Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

75 files changed, 26969 insertions, 0 deletions

diff --git a/source4/ntvfs/README b/source4/ntvfs/README
new file mode 100644
index 0000000..c86c9a0
--- /dev/null
+++ b/source4/ntvfs/README
@@ -0,0 +1,26 @@
+This is the base of the new NTVFS subsystem for Samba. The model for
+NTVFS backends is quite different than for the older style VFS
+backends, in particular:
+
+- the NTVFS backends receive windows style file names, although they
+  are in the unix charset (usually UTF8). This means the backend is
+  responsible for mapping windows filename conventions to unix
+  filename conventions if necessary
+
+- the NTVFS backends are responsible for changing effective UID before
+  calling any OS local filesystem operations (if needed). The
+  become_*() functions are provided to make this easier.
+
+- the NTVFS backends are responsible for resolving DFS paths
+
+- each NTVFS backend handles either disk, printer or IPC$ shares,
+  rather than one backend handling all types
+
+- the entry points of the NTVFS backends correspond closely with basic
+  SMB operations, wheres the old VFS was modelled directly on the
+  POSIX filesystem interface.
+
+- the NTVFS backends are responsible for all semantic mappings, such
+  as mapping dos file attributes, ACLs, file ownership and file times
+
+
diff --git a/source4/ntvfs/cifs/README b/source4/ntvfs/cifs/README
new file mode 100644
index 0000000..f9ab50c
--- /dev/null
+++ b/source4/ntvfs/cifs/README
@@ -0,0 +1,40 @@
+This is the 'CIFS on CIFS' backend for Samba. It provides a NTVFS
+backend that talks to a remote CIFS server. The primary aim of this
+backend is for debugging and development, although some people may
+find it useful as a CIFS gateway.
+
+There are two modes of operation: Password specified and delegated
+credentials.
+
+Password specified:
+-------------------
+
+This uses a static username/password in the config file, example:
+
+[myshare]
+	ntvfs handler = cifs
+	cifs:server = myserver
+	cifs:user = tridge
+	cifs:password = mypass
+	cifs:domain = TESTDOM
+	cifs:share = test
+
+
+Delegated credentials:
+----------------------
+
+If your incoming user is authenticated with Kerberos, and the machine
+account for this Samba4 proxy server is 'trusted for delegation', then
+the Samba4 proxy can forward the client's credentials to the target.
+
+You must be joined to the domain (net join <domain> member).
+
+To set 'trusted for delegation' with MMC, see the checkbox in the
+Computer account property page under Users and Computers.
+
+[myshare]
+	ntvfs handler = cifs
+	cifs:server = myserver
+	cifs:share = test
+
+
diff --git a/source4/ntvfs/cifs/vfs_cifs.c b/source4/ntvfs/cifs/vfs_cifs.c
new file mode 100644
index 0000000..121ff57
--- /dev/null
+++ b/source4/ntvfs/cifs/vfs_cifs.c
@@ -0,0 +1,1263 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   CIFS-on-CIFS NTVFS filesystem backend
+
+   Copyright (C) Andrew Tridgell 2003
+   Copyright (C) James J Myers 2003 <myersjj@samba.org>
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/*
+  this implements a CIFS->CIFS NTVFS filesystem backend. 
+  
+*/
+
+#include "includes.h"
+#include "libcli/raw/libcliraw.h"
+#include "libcli/raw/raw_proto.h"
+#include "libcli/smb_composite/smb_composite.h"
+#include "auth/auth.h"
+#include "auth/credentials/credentials.h"
+#include "ntvfs/ntvfs.h"
+#include "../lib/util/dlinklist.h"
+#include "param/param.h"
+#include "libcli/resolve/resolve.h"
+#include "../libcli/smb/smbXcli_base.h"
+
+struct cvfs_file {
+	struct cvfs_file *prev, *next;
+	uint16_t fnum;
+	struct ntvfs_handle *h;
+};
+
+/* this is stored in ntvfs_private */
+struct cvfs_private {
+	struct smbcli_tree *tree;
+	struct smbcli_transport *transport;
+	struct ntvfs_module_context *ntvfs;
+	struct async_info *pending;
+	struct cvfs_file *files;
+	bool map_generic;
+	bool map_trans2;
+};
+
+
+/* a structure used to pass information to an async handler */
+struct async_info {
+	struct async_info *next, *prev;
+	struct cvfs_private *cvfs;
+	struct ntvfs_request *req;
+	struct smbcli_request *c_req;
+	struct cvfs_file *f;
+	void *parms;
+};
+
+NTSTATUS ntvfs_cifs_init(TALLOC_CTX *);
+
+#define CHECK_UPSTREAM_OPEN do { \
+	if (!smbXcli_conn_is_connected(p->transport->conn)) { \
+		req->async_states->state|=NTVFS_ASYNC_STATE_CLOSE; \
+		return NT_STATUS_CONNECTION_DISCONNECTED; \
+	} \
+} while(0)
+
+#define SETUP_PID do { \
+	p->tree->session->pid = req->smbpid; \
+	CHECK_UPSTREAM_OPEN; \
+} while(0)
+
+#define SETUP_FILE_HERE(f) do { \
+	f = ntvfs_handle_get_backend_data(io->generic.in.file.ntvfs, ntvfs); \
+	if (!f) return NT_STATUS_INVALID_HANDLE; \
+	io->generic.in.file.fnum = f->fnum; \
+} while (0)
+
+#define SETUP_FILE do { \
+	struct cvfs_file *f; \
+	SETUP_FILE_HERE(f); \
+} while (0)
+
+#define SETUP_PID_AND_FILE do { \
+	SETUP_PID; \
+	SETUP_FILE; \
+} while (0)
+
+#define CIFS_SERVER		"cifs:server"
+#define CIFS_USER		"cifs:user"
+#define CIFS_PASSWORD		"cifs:password"
+#define CIFS_DOMAIN		"cifs:domain"
+#define CIFS_SHARE		"cifs:share"
+#define CIFS_USE_MACHINE_ACCT	"cifs:use-machine-account"
+#define CIFS_USE_S4U2PROXY	"cifs:use-s4u2proxy"
+#define CIFS_MAP_GENERIC	"cifs:map-generic"
+#define CIFS_MAP_TRANS2		"cifs:map-trans2"
+
+#define CIFS_USE_MACHINE_ACCT_DEFAULT	false
+#define CIFS_USE_S4U2PROXY_DEFAULT	false
+#define CIFS_MAP_GENERIC_DEFAULT	false
+#define CIFS_MAP_TRANS2_DEFAULT		true
+
+/*
+  a handler for oplock break events from the server - these need to be passed
+  along to the client
+ */
+static bool oplock_handler(struct smbcli_transport *transport, uint16_t tid, uint16_t fnum, uint8_t level, void *p_private)
+{
+	struct cvfs_private *p = p_private;
+	NTSTATUS status;
+	struct ntvfs_handle *h = NULL;
+	struct cvfs_file *f;
+
+	for (f=p->files; f; f=f->next) {
+		if (f->fnum != fnum) continue;
+		h = f->h;
+		break;
+	}
+
+	if (!h) {
+		DEBUG(5,("vfs_cifs: ignoring oplock break level %d for fnum %d\n", level, fnum));
+		return true;
+	}
+
+	DEBUG(5,("vfs_cifs: sending oplock break level %d for fnum %d\n", level, fnum));
+	status = ntvfs_send_oplock_break(p->ntvfs, h, level);
+	if (!NT_STATUS_IS_OK(status)) return false;
+	return true;
+}
+
+/*
+  connect to a share - used when a tree_connect operation comes in.
+*/
+static NTSTATUS cvfs_connect(struct ntvfs_module_context *ntvfs, 
+			     struct ntvfs_request *req,
+			     union smb_tcon *tcon)
+{
+	NTSTATUS status;
+	struct cvfs_private *p;
+	const char *host, *user, *pass, *domain, *remote_share;
+	struct smb_composite_connect io;
+	struct composite_context *creq;
+	struct share_config *scfg = ntvfs->ctx->config;
+
+	struct cli_credentials *credentials;
+	bool machine_account;
+	bool s4u2proxy;
+	const char* sharename;
+	TALLOC_CTX *tmp_ctx;
+
+	tmp_ctx = talloc_new(req);
+	if (tmp_ctx == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	switch (tcon->generic.level) {
+	case RAW_TCON_TCON:
+		sharename = tcon->tcon.in.service;
+		break;
+	case RAW_TCON_TCONX:
+		sharename = tcon->tconx.in.path;
+		break;
+	case RAW_TCON_SMB2:
+		sharename = tcon->smb2.in.path;
+		break;
+	default:
+		status = NT_STATUS_INVALID_LEVEL;
+		goto out;
+	}
+
+	if (strncmp(sharename, "\\\\", 2) == 0) {
+		char *str = strchr(sharename+2, '\\');
+		if (str) {
+			sharename = str + 1;
+		}
+	}
+
+	/* Here we need to determine which server to connect to.
+	 * For now we use parametric options, type cifs.
+	 */
+	host = share_string_option(tmp_ctx, scfg, CIFS_SERVER, NULL);
+	user = share_string_option(tmp_ctx, scfg, CIFS_USER, NULL);
+	pass = share_string_option(tmp_ctx, scfg, CIFS_PASSWORD, NULL);
+	domain = share_string_option(tmp_ctx, scfg, CIFS_DOMAIN, NULL);
+	remote_share = share_string_option(tmp_ctx, scfg, CIFS_SHARE, NULL);
+	if (!remote_share) {
+		remote_share = sharename;
+	}
+
+	machine_account = share_bool_option(scfg, CIFS_USE_MACHINE_ACCT, CIFS_USE_MACHINE_ACCT_DEFAULT);
+	s4u2proxy = share_bool_option(scfg, CIFS_USE_S4U2PROXY, CIFS_USE_S4U2PROXY_DEFAULT);
+
+	p = talloc_zero(ntvfs, struct cvfs_private);
+	if (!p) {
+		status = NT_STATUS_NO_MEMORY;
+		goto out;
+	}
+
+	ntvfs->private_data = p;
+
+	if (!host) {
+		DEBUG(1,("CIFS backend: You must supply server\n"));
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto out;
+	} 
+	
+	if (user && pass) {
+		DEBUG(5, ("CIFS backend: Using specified password\n"));
+		credentials = cli_credentials_init(p);
+		if (!credentials) {
+			status = NT_STATUS_NO_MEMORY;
+			goto out;
+		}
+		cli_credentials_set_conf(credentials, ntvfs->ctx->lp_ctx);
+		cli_credentials_set_username(credentials, user, CRED_SPECIFIED);
+		if (domain) {
+			cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED);
+		}
+		cli_credentials_set_password(credentials, pass, CRED_SPECIFIED);
+	} else if (machine_account) {
+		DEBUG(5, ("CIFS backend: Using machine account\n"));
+		credentials = cli_credentials_init_server(p,
+							  ntvfs->ctx->lp_ctx);
+		if (credentials == NULL) {
+			status = NT_STATUS_NO_MEMORY;
+			goto out;
+		}
+	} else if (req->session_info->credentials) {
+		DEBUG(5, ("CIFS backend: Using delegated credentials\n"));
+		credentials = req->session_info->credentials;
+	} else if (s4u2proxy) {
+		struct ccache_container *ccc = NULL;
+		const char *err_str = NULL;
+		int ret;
+		char *impersonate_principal;
+		char *self_service;
+		char *target_service;
+
+		impersonate_principal = talloc_asprintf(req, "%s@%s",
+						req->session_info->info->account_name,
+						req->session_info->info->domain_name);
+
+		self_service = talloc_asprintf(req, "cifs/%s",
+					       lpcfg_netbios_name(ntvfs->ctx->lp_ctx));
+
+		target_service = talloc_asprintf(req, "cifs/%s", host);
+
+		DEBUG(5, ("CIFS backend: Using S4U2Proxy credentials\n"));
+
+		credentials = cli_credentials_init_server(p,
+							  ntvfs->ctx->lp_ctx);
+		if (credentials == NULL) {
+			status = NT_STATUS_NO_MEMORY;
+			goto out;
+		}
+		cli_credentials_invalidate_ccache(credentials, CRED_SPECIFIED);
+		cli_credentials_set_impersonate_principal(credentials,
+							  impersonate_principal,
+							  self_service);
+		cli_credentials_set_target_service(credentials, target_service);
+		ret = cli_credentials_get_ccache(credentials,
+						 ntvfs->ctx->event_ctx,
+						 ntvfs->ctx->lp_ctx,
+						 &ccc,
+						 &err_str);
+		if (ret != 0) {
+			status = NT_STATUS_CROSSREALM_DELEGATION_FAILURE;
+			DEBUG(1,("S4U2Proxy: cli_credentials_get_ccache() gave: ret[%d] str[%s] - %s\n",
+				ret, err_str, nt_errstr(status)));
+			goto out;
+		}
+
+	} else {
+		DEBUG(1,("CIFS backend: NO delegated credentials found: You must supply server, user and password or the client must supply delegated credentials\n"));
+		status = NT_STATUS_INTERNAL_ERROR;
+		goto out;
+	}
+
+	/* connect to the server, using the smbd event context */
+	io.in.dest_host = host;
+	io.in.dest_ports = lpcfg_smb_ports(ntvfs->ctx->lp_ctx);
+	io.in.socket_options = lpcfg_socket_options(ntvfs->ctx->lp_ctx);
+	io.in.called_name = host;
+	io.in.existing_conn = NULL;
+	io.in.credentials = credentials;
+	io.in.fallback_to_anonymous = false;
+	io.in.workgroup = lpcfg_workgroup(ntvfs->ctx->lp_ctx);
+	io.in.service = remote_share;
+	io.in.service_type = "?????";
+	io.in.gensec_settings = lpcfg_gensec_settings(p, ntvfs->ctx->lp_ctx);
+	lpcfg_smbcli_options(ntvfs->ctx->lp_ctx, &io.in.options);
+	lpcfg_smbcli_session_options(ntvfs->ctx->lp_ctx, &io.in.session_options);
+
+	if (!(ntvfs->ctx->client_caps & NTVFS_CLIENT_CAP_LEVEL_II_OPLOCKS)) {
+		io.in.options.use_level2_oplocks = false;
+	}
+
+	creq = smb_composite_connect_send(&io, p,
+					  lpcfg_resolve_context(ntvfs->ctx->lp_ctx),
+					  ntvfs->ctx->event_ctx);
+	status = smb_composite_connect_recv(creq, p);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto out;
+	}
+
+	p->tree = io.out.tree;
+
+	p->transport = p->tree->session->transport;
+	SETUP_PID;
+	p->ntvfs = ntvfs;
+
+	ntvfs->ctx->fs_type = talloc_strdup(ntvfs->ctx, "NTFS");
+	if (ntvfs->ctx->fs_type == NULL) {
+		status = NT_STATUS_NO_MEMORY;
+		goto out;
+	}
+	ntvfs->ctx->dev_type = talloc_strdup(ntvfs->ctx, "A:");
+	if (ntvfs->ctx->dev_type == NULL) {
+		status = NT_STATUS_NO_MEMORY;
+		goto out;
+	}
+
+	if (tcon->generic.level == RAW_TCON_TCONX) {
+		tcon->tconx.out.fs_type = ntvfs->ctx->fs_type;
+		tcon->tconx.out.dev_type = ntvfs->ctx->dev_type;
+	}
+
+	/* we need to receive oplock break requests from the server */
+	smbcli_oplock_handler(p->transport, oplock_handler, p);
+
+	p->map_generic = share_bool_option(scfg, CIFS_MAP_GENERIC, CIFS_MAP_GENERIC_DEFAULT);
+
+	p->map_trans2 = share_bool_option(scfg, CIFS_MAP_TRANS2, CIFS_MAP_TRANS2_DEFAULT);
+
+	status = NT_STATUS_OK;
+
+out:
+	TALLOC_FREE(tmp_ctx);
+	return status;
+}
+
+/*
+  disconnect from a share
+*/
+static NTSTATUS cvfs_disconnect(struct ntvfs_module_context *ntvfs)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct async_info *a, *an;
+
+	/* first cleanup pending requests */
+	for (a=p->pending; a; a = an) {
+		an = a->next;
+		smbcli_request_destroy(a->c_req);
+		talloc_free(a);
+	}
+
+	talloc_free(p);
+	ntvfs->private_data = NULL;
+
+	return NT_STATUS_OK;
+}
+
+/*
+  destroy an async info structure
+*/
+static int async_info_destructor(struct async_info *async)
+{
+	DLIST_REMOVE(async->cvfs->pending, async);
+	return 0;
+}
+
+/*
+  a handler for simple async replies
+  this handler can only be used for functions that don't return any
+  parameters (those that just return a status code)
+ */
+static void async_simple(struct smbcli_request *c_req)
+{
+	struct async_info *async = c_req->async.private_data;
+	struct ntvfs_request *req = async->req;
+	req->async_states->status = smbcli_request_simple_recv(c_req);
+	talloc_free(async);
+	req->async_states->send_fn(req);
+}
+
+
+/* save some typing for the simple functions */
+#define ASYNC_RECV_TAIL_F(io, async_fn, file) do { \
+	if (!c_req) return NT_STATUS_UNSUCCESSFUL; \
+	{ \
+		struct async_info *async; \
+		async = talloc(req, struct async_info); \
+		if (!async) return NT_STATUS_NO_MEMORY; \
+		async->parms = io; \
+		async->req = req; \
+		async->f = file; \
+		async->cvfs = p; \
+		async->c_req = c_req; \
+		DLIST_ADD(p->pending, async); \
+		c_req->async.private_data = async; \
+		talloc_set_destructor(async, async_info_destructor); \
+	} \
+	c_req->async.fn = async_fn; \
+	req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC; \
+	return NT_STATUS_OK; \
+} while (0)
+
+#define ASYNC_RECV_TAIL(io, async_fn) ASYNC_RECV_TAIL_F(io, async_fn, NULL)
+
+#define SIMPLE_ASYNC_TAIL ASYNC_RECV_TAIL(NULL, async_simple)
+
+/*
+  delete a file - the dirtype specifies the file types to include in the search. 
+  The name can contain CIFS wildcards, but rarely does (except with OS/2 clients)
+*/
+static NTSTATUS cvfs_unlink(struct ntvfs_module_context *ntvfs, 
+			    struct ntvfs_request *req, union smb_unlink *unl)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct smbcli_request *c_req;
+
+	SETUP_PID;
+
+	/* see if the front end will allow us to perform this
+	   function asynchronously.  */
+	if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return smb_raw_unlink(p->tree, unl);
+	}
+
+	c_req = smb_raw_unlink_send(p->tree, unl);
+
+	SIMPLE_ASYNC_TAIL;
+}
+
+/*
+  a handler for async ioctl replies
+ */
+static void async_ioctl(struct smbcli_request *c_req)
+{
+	struct async_info *async = c_req->async.private_data;
+	struct ntvfs_request *req = async->req;
+	req->async_states->status = smb_raw_ioctl_recv(c_req, req, async->parms);
+	talloc_free(async);
+	req->async_states->send_fn(req);
+}
+
+/*
+  ioctl interface
+*/
+static NTSTATUS cvfs_ioctl(struct ntvfs_module_context *ntvfs, 
+			   struct ntvfs_request *req, union smb_ioctl *io)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct smbcli_request *c_req;
+
+	SETUP_PID_AND_FILE;
+
+	/* see if the front end will allow us to perform this
+	   function asynchronously.  */
+	if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return smb_raw_ioctl(p->tree, req, io);
+	}
+
+	c_req = smb_raw_ioctl_send(p->tree, io);
+
+	ASYNC_RECV_TAIL(io, async_ioctl);
+}
+
+/*
+  check if a directory exists
+*/
+static NTSTATUS cvfs_chkpath(struct ntvfs_module_context *ntvfs, 
+			     struct ntvfs_request *req, union smb_chkpath *cp)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct smbcli_request *c_req;
+
+	SETUP_PID;
+
+	if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return smb_raw_chkpath(p->tree, cp);
+	}
+
+	c_req = smb_raw_chkpath_send(p->tree, cp);
+
+	SIMPLE_ASYNC_TAIL;
+}
+
+/*
+  a handler for async qpathinfo replies
+ */
+static void async_qpathinfo(struct smbcli_request *c_req)
+{
+	struct async_info *async = c_req->async.private_data;
+	struct ntvfs_request *req = async->req;
+	req->async_states->status = smb_raw_pathinfo_recv(c_req, req, async->parms);
+	talloc_free(async);
+	req->async_states->send_fn(req);
+}
+
+/*
+  return info on a pathname
+*/
+static NTSTATUS cvfs_qpathinfo(struct ntvfs_module_context *ntvfs, 
+			       struct ntvfs_request *req, union smb_fileinfo *info)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct smbcli_request *c_req;
+
+	SETUP_PID;
+
+	if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return smb_raw_pathinfo(p->tree, req, info);
+	}
+
+	c_req = smb_raw_pathinfo_send(p->tree, info);
+
+	ASYNC_RECV_TAIL(info, async_qpathinfo);
+}
+
+/*
+  a handler for async qfileinfo replies
+ */
+static void async_qfileinfo(struct smbcli_request *c_req)
+{
+	struct async_info *async = c_req->async.private_data;
+	struct ntvfs_request *req = async->req;
+	req->async_states->status = smb_raw_fileinfo_recv(c_req, req, async->parms);
+	talloc_free(async);
+	req->async_states->send_fn(req);
+}
+
+/*
+  query info on a open file
+*/
+static NTSTATUS cvfs_qfileinfo(struct ntvfs_module_context *ntvfs, 
+			       struct ntvfs_request *req, union smb_fileinfo *io)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct smbcli_request *c_req;
+
+	SETUP_PID_AND_FILE;
+
+	if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return smb_raw_fileinfo(p->tree, req, io);
+	}
+
+	c_req = smb_raw_fileinfo_send(p->tree, io);
+
+	ASYNC_RECV_TAIL(io, async_qfileinfo);
+}
+
+
+/*
+  set info on a pathname
+*/
+static NTSTATUS cvfs_setpathinfo(struct ntvfs_module_context *ntvfs, 
+				 struct ntvfs_request *req, union smb_setfileinfo *st)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct smbcli_request *c_req;
+
+	SETUP_PID;
+
+	if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return smb_raw_setpathinfo(p->tree, st);
+	}
+
+	c_req = smb_raw_setpathinfo_send(p->tree, st);
+
+	SIMPLE_ASYNC_TAIL;
+}
+
+
+/*
+  a handler for async open replies
+ */
+static void async_open(struct smbcli_request *c_req)
+{
+	struct async_info *async = c_req->async.private_data;
+	struct cvfs_private *cvfs = async->cvfs;
+	struct ntvfs_request *req = async->req;
+	struct cvfs_file *f = async->f;
+	union smb_open *io = async->parms;
+	union smb_handle *file;
+	if (f == NULL) {
+		goto failed;
+	}
+	talloc_free(async);
+	req->async_states->status = smb_raw_open_recv(c_req, req, io);
+	SMB_OPEN_OUT_FILE(io, file);
+	if (file == NULL) {
+		goto failed;
+	}
+	f->fnum = file->fnum;
+	file->ntvfs = NULL;
+	if (!NT_STATUS_IS_OK(req->async_states->status)) goto failed;
+	req->async_states->status = ntvfs_handle_set_backend_data(f->h, cvfs->ntvfs, f);
+	if (!NT_STATUS_IS_OK(req->async_states->status)) goto failed;
+	file->ntvfs = f->h;
+	DLIST_ADD(cvfs->files, f);
+failed:
+	req->async_states->send_fn(req);
+}
+
+/*
+  open a file
+*/
+static NTSTATUS cvfs_open(struct ntvfs_module_context *ntvfs, 
+			  struct ntvfs_request *req, union smb_open *io)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct smbcli_request *c_req;
+	struct ntvfs_handle *h;
+	struct cvfs_file *f;
+	NTSTATUS status;
+
+	SETUP_PID;
+
+	if (io->generic.level != RAW_OPEN_GENERIC &&
+	    p->map_generic) {
+		return ntvfs_map_open(ntvfs, req, io);
+	}
+
+	status = ntvfs_handle_new(ntvfs, req, &h);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	f = talloc_zero(h, struct cvfs_file);
+	NT_STATUS_HAVE_NO_MEMORY(f);
+	f->h = h;
+
+	if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		union smb_handle *file;
+
+		status = smb_raw_open(p->tree, req, io);
+		NT_STATUS_NOT_OK_RETURN(status);
+
+		SMB_OPEN_OUT_FILE(io, file);
+		if (file == NULL) {
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+		f->fnum = file->fnum;
+		file->ntvfs = NULL;
+		status = ntvfs_handle_set_backend_data(f->h, p->ntvfs, f);
+		NT_STATUS_NOT_OK_RETURN(status);
+		file->ntvfs = f->h;
+		DLIST_ADD(p->files, f);
+
+		return NT_STATUS_OK;
+	}
+
+	c_req = smb_raw_open_send(p->tree, io);
+
+	ASYNC_RECV_TAIL_F(io, async_open, f);
+}
+
+/*
+  create a directory
+*/
+static NTSTATUS cvfs_mkdir(struct ntvfs_module_context *ntvfs, 
+			   struct ntvfs_request *req, union smb_mkdir *md)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct smbcli_request *c_req;
+
+	SETUP_PID;
+
+	if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return smb_raw_mkdir(p->tree, md);
+	}
+
+	c_req = smb_raw_mkdir_send(p->tree, md);
+
+	SIMPLE_ASYNC_TAIL;
+}
+
+/*
+  remove a directory
+*/
+static NTSTATUS cvfs_rmdir(struct ntvfs_module_context *ntvfs, 
+			   struct ntvfs_request *req, struct smb_rmdir *rd)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct smbcli_request *c_req;
+
+	SETUP_PID;
+
+	if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return smb_raw_rmdir(p->tree, rd);
+	}
+	c_req = smb_raw_rmdir_send(p->tree, rd);
+
+	SIMPLE_ASYNC_TAIL;
+}
+
+/*
+  rename a set of files
+*/
+static NTSTATUS cvfs_rename(struct ntvfs_module_context *ntvfs, 
+			    struct ntvfs_request *req, union smb_rename *ren)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct smbcli_request *c_req;
+
+	SETUP_PID;
+
+	if (ren->nttrans.level == RAW_RENAME_NTTRANS) {
+		struct cvfs_file *f;
+		f = ntvfs_handle_get_backend_data(ren->nttrans.in.file.ntvfs, ntvfs);
+		if (!f) return NT_STATUS_INVALID_HANDLE;
+		ren->nttrans.in.file.fnum = f->fnum;
+	}
+
+	if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return smb_raw_rename(p->tree, ren);
+	}
+
+	c_req = smb_raw_rename_send(p->tree, ren);
+
+	SIMPLE_ASYNC_TAIL;
+}
+
+/*
+  copy a set of files
+*/
+static NTSTATUS cvfs_copy(struct ntvfs_module_context *ntvfs, 
+			  struct ntvfs_request *req, struct smb_copy *cp)
+{
+	return NT_STATUS_NOT_SUPPORTED;
+}
+
+/*
+  a handler for async read replies
+ */
+static void async_read(struct smbcli_request *c_req)
+{
+	struct async_info *async = c_req->async.private_data;
+	struct ntvfs_request *req = async->req;
+	req->async_states->status = smb_raw_read_recv(c_req, async->parms);
+	talloc_free(async);
+	req->async_states->send_fn(req);
+}
+
+/*
+  read from a file
+*/
+static NTSTATUS cvfs_read(struct ntvfs_module_context *ntvfs, 
+			  struct ntvfs_request *req, union smb_read *io)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct smbcli_request *c_req;
+
+	SETUP_PID;
+
+	if (io->generic.level != RAW_READ_GENERIC &&
+	    p->map_generic) {
+		return ntvfs_map_read(ntvfs, req, io);
+	}
+
+	SETUP_FILE;
+
+	if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return smb_raw_read(p->tree, io);
+	}
+
+	c_req = smb_raw_read_send(p->tree, io);
+
+	ASYNC_RECV_TAIL(io, async_read);
+}
+
+/*
+  a handler for async write replies
+ */
+static void async_write(struct smbcli_request *c_req)
+{
+	struct async_info *async = c_req->async.private_data;
+	struct ntvfs_request *req = async->req;
+	req->async_states->status = smb_raw_write_recv(c_req, async->parms);
+	talloc_free(async);
+	req->async_states->send_fn(req);
+}
+
+/*
+  write to a file
+*/
+static NTSTATUS cvfs_write(struct ntvfs_module_context *ntvfs, 
+			   struct ntvfs_request *req, union smb_write *io)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct smbcli_request *c_req;
+
+	SETUP_PID;
+
+	if (io->generic.level != RAW_WRITE_GENERIC &&
+	    p->map_generic) {
+		return ntvfs_map_write(ntvfs, req, io);
+	}
+	SETUP_FILE;
+
+	if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return smb_raw_write(p->tree, io);
+	}
+
+	c_req = smb_raw_write_send(p->tree, io);
+
+	ASYNC_RECV_TAIL(io, async_write);
+}
+
+/*
+  a handler for async seek replies
+ */
+static void async_seek(struct smbcli_request *c_req)
+{
+	struct async_info *async = c_req->async.private_data;
+	struct ntvfs_request *req = async->req;
+	req->async_states->status = smb_raw_seek_recv(c_req, async->parms);
+	talloc_free(async);
+	req->async_states->send_fn(req);
+}
+
+/*
+  seek in a file
+*/
+static NTSTATUS cvfs_seek(struct ntvfs_module_context *ntvfs, 
+			  struct ntvfs_request *req,
+			  union smb_seek *io)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct smbcli_request *c_req;
+
+	SETUP_PID_AND_FILE;
+
+	if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return smb_raw_seek(p->tree, io);
+	}
+
+	c_req = smb_raw_seek_send(p->tree, io);
+
+	ASYNC_RECV_TAIL(io, async_seek);
+}
+
+/*
+  flush a file
+*/
+static NTSTATUS cvfs_flush(struct ntvfs_module_context *ntvfs, 
+			   struct ntvfs_request *req,
+			   union smb_flush *io)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct smbcli_request *c_req;
+
+	SETUP_PID;
+	switch (io->generic.level) {
+	case RAW_FLUSH_FLUSH:
+		SETUP_FILE;
+		break;
+	case RAW_FLUSH_ALL:
+		io->generic.in.file.fnum = 0xFFFF;
+		break;
+	case RAW_FLUSH_SMB2:
+		return NT_STATUS_INVALID_LEVEL;
+	}
+
+	if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return smb_raw_flush(p->tree, io);
+	}
+
+	c_req = smb_raw_flush_send(p->tree, io);
+
+	SIMPLE_ASYNC_TAIL;
+}
+
+/*
+  close a file
+*/
+static NTSTATUS cvfs_close(struct ntvfs_module_context *ntvfs, 
+			   struct ntvfs_request *req, union smb_close *io)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct smbcli_request *c_req;
+	struct cvfs_file *f;
+	union smb_close io2;
+
+	SETUP_PID;
+
+	if (io->generic.level != RAW_CLOSE_GENERIC &&
+	    p->map_generic) {
+		return ntvfs_map_close(ntvfs, req, io);
+	}
+
+	if (io->generic.level == RAW_CLOSE_GENERIC) {
+		ZERO_STRUCT(io2);
+		io2.close.level = RAW_CLOSE_CLOSE;
+		io2.close.in.file = io->generic.in.file;
+		io2.close.in.write_time = io->generic.in.write_time;
+		io = &io2;
+	}
+
+	SETUP_FILE_HERE(f);
+	/* Note, we aren't free-ing f, or it's h here. Should we?
+	   even if file-close fails, we'll remove it from the list,
+	   what else would we do? Maybe we should not remove until
+	   after the proxied call completes? */
+	DLIST_REMOVE(p->files, f);
+
+	if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return smb_raw_close(p->tree, io);
+	}
+
+	c_req = smb_raw_close_send(p->tree, io);
+
+	SIMPLE_ASYNC_TAIL;
+}
+
+/*
+  exit - closing files open by the pid
+*/
+static NTSTATUS cvfs_exit(struct ntvfs_module_context *ntvfs, 
+			  struct ntvfs_request *req)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct smbcli_request *c_req;
+
+	SETUP_PID;
+
+	if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return smb_raw_exit(p->tree->session);
+	}
+
+	c_req = smb_raw_exit_send(p->tree->session);
+
+	SIMPLE_ASYNC_TAIL;
+}
+
+/*
+  logoff - closing files open by the user
+*/
+static NTSTATUS cvfs_logoff(struct ntvfs_module_context *ntvfs, 
+			    struct ntvfs_request *req)
+{
+	/* we can't do this right in the cifs backend .... */
+	return NT_STATUS_OK;
+}
+
+/*
+  setup for an async call - nothing to do yet
+*/
+static NTSTATUS cvfs_async_setup(struct ntvfs_module_context *ntvfs, 
+				 struct ntvfs_request *req, 
+				 void *private_data)
+{
+	return NT_STATUS_OK;
+}
+
+/*
+  cancel an async call
+*/
+static NTSTATUS cvfs_cancel(struct ntvfs_module_context *ntvfs, 
+			    struct ntvfs_request *req)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct async_info *a;
+
+	/* find the matching request */
+	for (a=p->pending;a;a=a->next) {
+		if (a->req == req) {
+			break;
+		}
+	}
+
+	if (a == NULL) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	return smb_raw_ntcancel(a->c_req);
+}
+
+/*
+  lock a byte range
+*/
+static NTSTATUS cvfs_lock(struct ntvfs_module_context *ntvfs, 
+			  struct ntvfs_request *req, union smb_lock *io)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct smbcli_request *c_req;
+
+	SETUP_PID;
+
+	if (io->generic.level != RAW_LOCK_GENERIC &&
+	    p->map_generic) {
+		return ntvfs_map_lock(ntvfs, req, io);
+	}
+	SETUP_FILE;
+
+	if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return smb_raw_lock(p->tree, io);
+	}
+
+	c_req = smb_raw_lock_send(p->tree, io);
+	SIMPLE_ASYNC_TAIL;
+}
+
+/*
+  set info on a open file
+*/
+static NTSTATUS cvfs_setfileinfo(struct ntvfs_module_context *ntvfs, 
+				 struct ntvfs_request *req, 
+				 union smb_setfileinfo *io)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct smbcli_request *c_req;
+
+	SETUP_PID_AND_FILE;
+
+	if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return smb_raw_setfileinfo(p->tree, io);
+	}
+	c_req = smb_raw_setfileinfo_send(p->tree, io);
+
+	SIMPLE_ASYNC_TAIL;
+}
+
+
+/*
+  a handler for async fsinfo replies
+ */
+static void async_fsinfo(struct smbcli_request *c_req)
+{
+	struct async_info *async = c_req->async.private_data;
+	struct ntvfs_request *req = async->req;
+	req->async_states->status = smb_raw_fsinfo_recv(c_req, req, async->parms);
+	talloc_free(async);
+	req->async_states->send_fn(req);
+}
+
+/*
+  return filesystem space info
+*/
+static NTSTATUS cvfs_fsinfo(struct ntvfs_module_context *ntvfs, 
+			    struct ntvfs_request *req, union smb_fsinfo *fs)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct smbcli_request *c_req;
+
+	SETUP_PID;
+
+	if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return smb_raw_fsinfo(p->tree, req, fs);
+	}
+
+	c_req = smb_raw_fsinfo_send(p->tree, req, fs);
+
+	ASYNC_RECV_TAIL(fs, async_fsinfo);
+}
+
+/*
+  return print queue info
+*/
+static NTSTATUS cvfs_lpq(struct ntvfs_module_context *ntvfs, 
+			 struct ntvfs_request *req, union smb_lpq *lpq)
+{
+	return NT_STATUS_NOT_SUPPORTED;
+}
+
+/* 
+   list files in a directory matching a wildcard pattern
+*/
+static NTSTATUS cvfs_search_first(struct ntvfs_module_context *ntvfs, 
+				  struct ntvfs_request *req, union smb_search_first *io, 
+				  void *search_private, 
+				  bool (*callback)(void *, const union smb_search_data *))
+{
+	struct cvfs_private *p = ntvfs->private_data;
+
+	SETUP_PID;
+
+	return smb_raw_search_first(p->tree, req, io, search_private, callback);
+}
+
+/* continue a search */
+static NTSTATUS cvfs_search_next(struct ntvfs_module_context *ntvfs, 
+				 struct ntvfs_request *req, union smb_search_next *io, 
+				 void *search_private, 
+				 bool (*callback)(void *, const union smb_search_data *))
+{
+	struct cvfs_private *p = ntvfs->private_data;
+
+	SETUP_PID;
+
+	return smb_raw_search_next(p->tree, req, io, search_private, callback);
+}
+
+/* close a search */
+static NTSTATUS cvfs_search_close(struct ntvfs_module_context *ntvfs, 
+				  struct ntvfs_request *req, union smb_search_close *io)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+
+	SETUP_PID;
+
+	return smb_raw_search_close(p->tree, io);
+}
+
+/*
+  a handler for async trans2 replies
+ */
+static void async_trans2(struct smbcli_request *c_req)
+{
+	struct async_info *async = c_req->async.private_data;
+	struct ntvfs_request *req = async->req;
+	req->async_states->status = smb_raw_trans2_recv(c_req, req, async->parms);
+	talloc_free(async);
+	req->async_states->send_fn(req);
+}
+
+/* raw trans2 */
+static NTSTATUS cvfs_trans2(struct ntvfs_module_context *ntvfs, 
+			    struct ntvfs_request *req,
+			    struct smb_trans2 *trans2)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct smbcli_request *c_req;
+
+	if (p->map_trans2) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+
+	SETUP_PID;
+
+	if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return smb_raw_trans2(p->tree, req, trans2);
+	}
+
+	c_req = smb_raw_trans2_send(p->tree, trans2);
+
+	ASYNC_RECV_TAIL(trans2, async_trans2);
+}
+
+
+/* SMBtrans - not used on file shares */
+static NTSTATUS cvfs_trans(struct ntvfs_module_context *ntvfs, 
+			   struct ntvfs_request *req,
+			   struct smb_trans2 *trans2)
+{
+	return NT_STATUS_ACCESS_DENIED;
+}
+
+/*
+  a handler for async change notify replies
+ */
+static void async_changenotify(struct smbcli_request *c_req)
+{
+	struct async_info *async = c_req->async.private_data;
+	struct ntvfs_request *req = async->req;
+	req->async_states->status = smb_raw_changenotify_recv(c_req, req, async->parms);
+	talloc_free(async);
+	req->async_states->send_fn(req);
+}
+
+/* change notify request - always async */
+static NTSTATUS cvfs_notify(struct ntvfs_module_context *ntvfs, 
+			    struct ntvfs_request *req,
+			    union smb_notify *io)
+{
+	struct cvfs_private *p = ntvfs->private_data;
+	struct smbcli_request *c_req;
+	int saved_timeout = p->transport->options.request_timeout;
+	struct cvfs_file *f;
+
+	if (io->nttrans.level != RAW_NOTIFY_NTTRANS) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+
+	SETUP_PID;
+
+	f = ntvfs_handle_get_backend_data(io->nttrans.in.file.ntvfs, ntvfs);
+	if (!f) return NT_STATUS_INVALID_HANDLE;
+	io->nttrans.in.file.fnum = f->fnum;
+
+	/* this request doesn't make sense unless its async */
+	if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	/* we must not timeout on notify requests - they wait
+	   forever */
+	p->transport->options.request_timeout = 0;
+
+	c_req = smb_raw_changenotify_send(p->tree, io);
+
+	p->transport->options.request_timeout = saved_timeout;
+
+	ASYNC_RECV_TAIL(io, async_changenotify);
+}
+
+/*
+  initialise the CIFS->CIFS backend, registering ourselves with the ntvfs subsystem
+ */
+NTSTATUS ntvfs_cifs_init(TALLOC_CTX *ctx)
+{
+	NTSTATUS ret;
+	struct ntvfs_ops ops;
+	NTVFS_CURRENT_CRITICAL_SIZES(vers);
+
+	ZERO_STRUCT(ops);
+
+	/* fill in the name and type */
+	ops.name = "cifs";
+	ops.type = NTVFS_DISK;
+	
+	/* fill in all the operations */
+	ops.connect_fn = cvfs_connect;
+	ops.disconnect_fn = cvfs_disconnect;
+	ops.unlink_fn = cvfs_unlink;
+	ops.chkpath_fn = cvfs_chkpath;
+	ops.qpathinfo_fn = cvfs_qpathinfo;
+	ops.setpathinfo_fn = cvfs_setpathinfo;
+	ops.open_fn = cvfs_open;
+	ops.mkdir_fn = cvfs_mkdir;
+	ops.rmdir_fn = cvfs_rmdir;
+	ops.rename_fn = cvfs_rename;
+	ops.copy_fn = cvfs_copy;
+	ops.ioctl_fn = cvfs_ioctl;
+	ops.read_fn = cvfs_read;
+	ops.write_fn = cvfs_write;
+	ops.seek_fn = cvfs_seek;
+	ops.flush_fn = cvfs_flush;
+	ops.close_fn = cvfs_close;
+	ops.exit_fn = cvfs_exit;
+	ops.lock_fn = cvfs_lock;
+	ops.setfileinfo_fn = cvfs_setfileinfo;
+	ops.qfileinfo_fn = cvfs_qfileinfo;
+	ops.fsinfo_fn = cvfs_fsinfo;
+	ops.lpq_fn = cvfs_lpq;
+	ops.search_first_fn = cvfs_search_first;
+	ops.search_next_fn = cvfs_search_next;
+	ops.search_close_fn = cvfs_search_close;
+	ops.trans_fn = cvfs_trans;
+	ops.logoff_fn = cvfs_logoff;
+	ops.async_setup_fn = cvfs_async_setup;
+	ops.cancel_fn = cvfs_cancel;
+	ops.notify_fn = cvfs_notify;
+	ops.trans2_fn = cvfs_trans2;
+
+	/* register ourselves with the NTVFS subsystem. We register
+	   under the name 'cifs'. */
+	ret = ntvfs_register(&ops, &vers);
+
+	if (!NT_STATUS_IS_OK(ret)) {
+		DEBUG(0,("Failed to register CIFS backend!\n"));
+	}
+	
+	return ret;
+}
diff --git a/source4/ntvfs/common/brlock.c b/source4/ntvfs/common/brlock.c
new file mode 100644
index 0000000..d99cc4e
--- /dev/null
+++ b/source4/ntvfs/common/brlock.c
@@ -0,0 +1,136 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   generic byte range locking code
+
+   Copyright (C) Andrew Tridgell 1992-2004
+   Copyright (C) Jeremy Allison 1992-2000
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/* This module implements a tdb based byte range locking service,
+   replacing the fcntl() based byte range locking previously
+   used. This allows us to provide the same semantics as NT */
+
+#include "includes.h"
+#include "system/filesys.h"
+#include "messaging/messaging.h"
+#include "lib/messaging/irpc.h"
+#include "libcli/libcli.h"
+#include "cluster/cluster.h"
+#include "ntvfs/common/ntvfs_common.h"
+
+static const struct brlock_ops *ops;
+
+/*
+  set the brl backend ops
+*/
+void brlock_set_ops(const struct brlock_ops *new_ops)
+{
+	ops = new_ops;
+}
+
+/*
+  Open up the brlock database. Close it down using talloc_free(). We
+  need the imessaging_ctx to allow for pending lock notifications.
+*/
+struct brl_context *brlock_init(TALLOC_CTX *mem_ctx, struct server_id server, 
+			     struct loadparm_context *lp_ctx,
+			     struct imessaging_context *imessaging_ctx)
+{
+	if (ops == NULL) {
+		brl_tdb_init_ops();
+	}
+	return ops->brl_init(mem_ctx, server, lp_ctx, imessaging_ctx);
+}
+
+struct brl_handle *brlock_create_handle(TALLOC_CTX *mem_ctx, struct ntvfs_handle *ntvfs, DATA_BLOB *file_key)
+{
+	return ops->brl_create_handle(mem_ctx, ntvfs, file_key);
+}
+
+/*
+  Lock a range of bytes.  The lock_type can be a PENDING_*_LOCK, in
+  which case a real lock is first tried, and if that fails then a
+  pending lock is created. When the pending lock is triggered (by
+  someone else closing an overlapping lock range) a messaging
+  notification is sent, identified by the notify_ptr
+*/
+NTSTATUS brlock_lock(struct brl_context *brl,
+		  struct brl_handle *brlh,
+		  uint32_t smbpid,
+		  uint64_t start, uint64_t size, 
+		  enum brl_type lock_type,
+		  void *notify_ptr)
+{
+	return ops->brl_lock(brl, brlh, smbpid, start, size, lock_type, notify_ptr);
+}
+
+
+/*
+ Unlock a range of bytes.
+*/
+NTSTATUS brlock_unlock(struct brl_context *brl,
+		    struct brl_handle *brlh, 
+		    uint32_t smbpid,
+		    uint64_t start, uint64_t size)
+{
+	return ops->brl_unlock(brl, brlh, smbpid, start, size);
+}
+
+/*
+  remove a pending lock. This is called when the caller has either
+  given up trying to establish a lock or when they have succeeded in
+  getting it. In either case they no longer need to be notified.
+*/
+NTSTATUS brlock_remove_pending(struct brl_context *brl,
+			    struct brl_handle *brlh, 
+			    void *notify_ptr)
+{
+	return ops->brl_remove_pending(brl, brlh, notify_ptr);
+}
+
+
+/*
+  Test if we are allowed to perform IO on a region of an open file
+*/
+NTSTATUS brlock_locktest(struct brl_context *brl,
+		      struct brl_handle *brlh,
+		      uint32_t smbpid, 
+		      uint64_t start, uint64_t size, 
+		      enum brl_type lock_type)
+{
+	return ops->brl_locktest(brl, brlh, smbpid, start, size, lock_type);
+}
+
+
+/*
+ Remove any locks associated with a open file.
+*/
+NTSTATUS brlock_close(struct brl_context *brl,
+		   struct brl_handle *brlh)
+{
+	return ops->brl_close(brl, brlh);
+}
+
+/*
+ Get a number of locks associated with a open file.
+*/
+NTSTATUS brlock_count(struct brl_context *brl,
+		   struct brl_handle *brlh,
+		   int *count)
+{
+	return ops->brl_count(brl, brlh, count);
+}
diff --git a/source4/ntvfs/common/brlock.h b/source4/ntvfs/common/brlock.h
new file mode 100644
index 0000000..650136b
--- /dev/null
+++ b/source4/ntvfs/common/brlock.h
@@ -0,0 +1,55 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   generic byte range locking code - common include
+
+   Copyright (C) Andrew Tridgell 2006
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "libcli/libcli.h"
+
+struct brlock_ops {
+	struct brl_context *(*brl_init)(TALLOC_CTX *, struct server_id , 
+					struct loadparm_context *lp_ctx,
+					struct imessaging_context *);
+	struct brl_handle *(*brl_create_handle)(TALLOC_CTX *, struct ntvfs_handle *, DATA_BLOB *);
+	NTSTATUS (*brl_lock)(struct brl_context *,
+			     struct brl_handle *,
+			     uint32_t ,
+			     uint64_t , uint64_t , 
+			     enum brl_type ,
+			     void *);
+	NTSTATUS (*brl_unlock)(struct brl_context *,
+			       struct brl_handle *, 
+			       uint32_t ,
+			       uint64_t , uint64_t );
+	NTSTATUS (*brl_remove_pending)(struct brl_context *,
+				       struct brl_handle *, 
+				       void *);
+	NTSTATUS (*brl_locktest)(struct brl_context *,
+				 struct brl_handle *,
+				 uint32_t , 
+				 uint64_t , uint64_t , 
+				 enum brl_type );
+	NTSTATUS (*brl_close)(struct brl_context *,
+			      struct brl_handle *);
+	NTSTATUS (*brl_count)(struct brl_context *,
+			      struct brl_handle *,
+			      int *count);
+};
+
+void brlock_set_ops(const struct brlock_ops *new_ops);
+void brl_tdb_init_ops(void);
diff --git a/source4/ntvfs/common/brlock_tdb.c b/source4/ntvfs/common/brlock_tdb.c
new file mode 100644
index 0000000..c4cd76b
--- /dev/null
+++ b/source4/ntvfs/common/brlock_tdb.c
@@ -0,0 +1,775 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   generic byte range locking code - tdb backend
+
+   Copyright (C) Andrew Tridgell 1992-2006
+   Copyright (C) Jeremy Allison 1992-2000
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/* This module implements a tdb based byte range locking service,
+   replacing the fcntl() based byte range locking previously
+   used. This allows us to provide the same semantics as NT */
+
+#include "includes.h"
+#include "system/filesys.h"
+#include "messaging/messaging.h"
+#include "lib/messaging/irpc.h"
+#include "libcli/libcli.h"
+#include "cluster/cluster.h"
+#include "ntvfs/common/brlock.h"
+#include "ntvfs/ntvfs.h"
+#include "param/param.h"
+#include "dbwrap/dbwrap.h"
+
+/*
+  in this module a "DATA_BLOB *file_key" is a blob that uniquely identifies
+  a file. For a local posix filesystem this will usually be a combination
+  of the device and inode numbers of the file, but it can be anything 
+  that uniquely identifies a file for locking purposes, as long
+  as it is applied consistently.
+*/
+
+/* this struct is typically attached to tcon */
+struct brl_context {
+	struct db_context *db;
+	struct server_id server;
+	struct imessaging_context *imessaging_ctx;
+};
+
+/*
+  the lock context contains the elements that define whether one
+  lock is the same as another lock
+*/
+struct lock_context {
+	struct server_id server;
+	uint32_t smbpid;
+	struct brl_context *ctx;
+};
+
+/* The data in brlock records is an unsorted linear array of these
+   records.  It is unnecessary to store the count as tdb provides the
+   size of the record */
+struct lock_struct {
+	struct lock_context context;
+	struct ntvfs_handle *ntvfs;
+	uint64_t start;
+	uint64_t size;
+	enum brl_type lock_type;
+	void *notify_ptr;
+};
+
+/* this struct is attached to on oprn file handle */
+struct brl_handle {
+	DATA_BLOB key;
+	struct ntvfs_handle *ntvfs;
+	struct lock_struct last_lock;
+};
+
+/* see if we have wrapped locks, which are no longer allowed (windows
+ * changed this in win7 */
+static bool brl_invalid_lock_range(uint64_t start, uint64_t size)
+{
+	return (size > 1 && (start + size < start));
+}
+
+/*
+  Open up the brlock.tdb database. Close it down using
+  talloc_free(). We need the imessaging_ctx to allow for
+  pending lock notifications.
+*/
+static struct brl_context *brl_tdb_init(TALLOC_CTX *mem_ctx, struct server_id server, 
+					struct loadparm_context *lp_ctx,
+				    struct imessaging_context *imessaging_ctx)
+{
+	struct brl_context *brl;
+
+	brl = talloc(mem_ctx, struct brl_context);
+	if (brl == NULL) {
+		return NULL;
+	}
+
+	brl->db = cluster_db_tmp_open(brl, lp_ctx, "brlock", TDB_DEFAULT);
+	if (brl->db == NULL) {
+		talloc_free(brl);
+		return NULL;
+	}
+
+	brl->server = server;
+	brl->imessaging_ctx = imessaging_ctx;
+
+	return brl;
+}
+
+static struct brl_handle *brl_tdb_create_handle(TALLOC_CTX *mem_ctx, struct ntvfs_handle *ntvfs, 
+						    DATA_BLOB *file_key)
+{
+	struct brl_handle *brlh;
+
+	brlh = talloc(mem_ctx, struct brl_handle);
+	if (brlh == NULL) {
+		return NULL;
+	}
+
+	brlh->key = *file_key;
+	brlh->ntvfs = ntvfs;
+	ZERO_STRUCT(brlh->last_lock);
+
+	return brlh;
+}
+
+/*
+  see if two locking contexts are equal
+*/
+static bool brl_tdb_same_context(struct lock_context *ctx1, struct lock_context *ctx2)
+{
+	return (cluster_id_equal(&ctx1->server, &ctx2->server) &&
+		ctx1->smbpid == ctx2->smbpid &&
+		ctx1->ctx == ctx2->ctx);
+}
+
+/*
+  see if lck1 and lck2 overlap
+
+  lck1 is the existing lock. lck2 is the new lock we are 
+  looking at adding
+*/
+static bool brl_tdb_overlap(struct lock_struct *lck1, 
+			    struct lock_struct *lck2)
+{
+	/* this extra check is not redundant - it copes with locks
+	   that go beyond the end of 64 bit file space */
+	if (lck1->size != 0 &&
+	    lck1->start == lck2->start &&
+	    lck1->size == lck2->size) {
+		return true;
+	}
+	    
+	if (lck1->start >= (lck2->start+lck2->size) ||
+	    lck2->start >= (lck1->start+lck1->size)) {
+		return false;
+	}
+
+	/* we have a conflict. Now check to see if lck1 really still
+	 * exists, which involves checking if the process still
+	 * exists. We leave this test to last as its the most
+	 * expensive test, especially when we are clustered */
+	/* TODO: need to do this via a server_id_exists() call, which
+	 * hasn't been written yet. When clustered this will need to
+	 * call into ctdb */
+
+	return true;
+} 
+
+/*
+ See if lock2 can be added when lock1 is in place.
+*/
+static bool brl_tdb_conflict(struct lock_struct *lck1, 
+			 struct lock_struct *lck2)
+{
+	/* pending locks don't conflict with anything */
+	if (lck1->lock_type >= PENDING_READ_LOCK ||
+	    lck2->lock_type >= PENDING_READ_LOCK) {
+		return false;
+	}
+
+	if (lck1->lock_type == READ_LOCK && lck2->lock_type == READ_LOCK) {
+		return false;
+	}
+
+	if (brl_tdb_same_context(&lck1->context, &lck2->context) &&
+	    lck2->lock_type == READ_LOCK && lck1->ntvfs == lck2->ntvfs) {
+		return false;
+	}
+
+	return brl_tdb_overlap(lck1, lck2);
+} 
+
+
+/*
+ Check to see if this lock conflicts, but ignore our own locks on the
+ same fnum only.
+*/
+static bool brl_tdb_conflict_other(struct lock_struct *lck1, struct lock_struct *lck2)
+{
+	/* pending locks don't conflict with anything */
+	if (lck1->lock_type >= PENDING_READ_LOCK ||
+	    lck2->lock_type >= PENDING_READ_LOCK) {
+		return false;
+	}
+
+	if (lck1->lock_type == READ_LOCK && lck2->lock_type == READ_LOCK) 
+		return false;
+
+	/*
+	 * note that incoming write calls conflict with existing READ
+	 * locks even if the context is the same. JRA. See LOCKTEST7
+	 * in smbtorture.
+	 */
+	if (brl_tdb_same_context(&lck1->context, &lck2->context) &&
+	    lck1->ntvfs == lck2->ntvfs &&
+	    (lck2->lock_type == READ_LOCK || lck1->lock_type == WRITE_LOCK)) {
+		return false;
+	}
+
+	return brl_tdb_overlap(lck1, lck2);
+} 
+
+
+/*
+  amazingly enough, w2k3 "remembers" whether the last lock failure
+  is the same as this one and changes its error code. I wonder if any
+  app depends on this?
+*/
+static NTSTATUS brl_tdb_lock_failed(struct brl_handle *brlh, struct lock_struct *lock)
+{
+	/*
+	 * this function is only called for non pending lock!
+	 */
+
+	/* in SMB2 mode always return NT_STATUS_LOCK_NOT_GRANTED! */
+	if (lock->ntvfs->ctx->protocol >= PROTOCOL_SMB2_02) {
+		return NT_STATUS_LOCK_NOT_GRANTED;
+	}
+
+	/* 
+	 * if the notify_ptr is non NULL,
+	 * it means that we're at the end of a pending lock
+	 * and the real lock is requested after the timeout went by
+	 * In this case we need to remember the last_lock and always
+	 * give FILE_LOCK_CONFLICT
+	 */
+	if (lock->notify_ptr) {
+		brlh->last_lock = *lock;
+		return NT_STATUS_FILE_LOCK_CONFLICT;
+	}
+
+	/* 
+	 * amazing the little things you learn with a test
+	 * suite. Locks beyond this offset (as a 64 bit
+	 * number!) always generate the conflict error code,
+	 * unless the top bit is set
+	 */
+	if (lock->start >= 0xEF000000 && (lock->start >> 63) == 0) {
+		brlh->last_lock = *lock;
+		return NT_STATUS_FILE_LOCK_CONFLICT;
+	}
+
+	/*
+	 * if the current lock matches the last failed lock on the file handle
+	 * and starts at the same offset, then FILE_LOCK_CONFLICT should be returned
+	 */
+	if (cluster_id_equal(&lock->context.server, &brlh->last_lock.context.server) &&
+	    lock->context.ctx == brlh->last_lock.context.ctx &&
+	    lock->ntvfs == brlh->last_lock.ntvfs &&
+	    lock->start == brlh->last_lock.start) {
+		return NT_STATUS_FILE_LOCK_CONFLICT;
+	}
+
+	brlh->last_lock = *lock;
+	return NT_STATUS_LOCK_NOT_GRANTED;
+}
+
+/*
+  Lock a range of bytes.  The lock_type can be a PENDING_*_LOCK, in
+  which case a real lock is first tried, and if that fails then a
+  pending lock is created. When the pending lock is triggered (by
+  someone else closing an overlapping lock range) a messaging
+  notification is sent, identified by the notify_ptr
+*/
+static NTSTATUS brl_tdb_lock(struct brl_context *brl,
+			 struct brl_handle *brlh,
+			 uint32_t smbpid,
+			 uint64_t start, uint64_t size, 
+			 enum brl_type lock_type,
+			 void *notify_ptr)
+{
+	TDB_DATA kbuf, dbuf;
+	int count=0, i;
+	struct lock_struct lock, *locks=NULL;
+	NTSTATUS status;
+	struct db_record *locked;
+
+	kbuf.dptr = brlh->key.data;
+	kbuf.dsize = brlh->key.length;
+
+	if (brl_invalid_lock_range(start, size)) {
+		return NT_STATUS_INVALID_LOCK_RANGE;
+	}
+
+	locked = dbwrap_fetch_locked(brl->db, brl, kbuf);
+	if (!locked) {
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	/* if this is a pending lock, then with the chainlock held we
+	   try to get the real lock. If we succeed then we don't need
+	   to make it pending. This prevents a possible race condition
+	   where the pending lock gets created after the lock that is
+	   preventing the real lock gets removed */
+	if (lock_type >= PENDING_READ_LOCK) {
+		enum brl_type rw = (lock_type==PENDING_READ_LOCK? READ_LOCK : WRITE_LOCK);
+
+		/* here we need to force that the last_lock isn't overwritten */
+		lock = brlh->last_lock;
+		status = brl_tdb_lock(brl, brlh, smbpid, start, size, rw, NULL);
+		brlh->last_lock = lock;
+
+		if (NT_STATUS_IS_OK(status)) {
+			talloc_free(locked);
+			return NT_STATUS_OK;
+		}
+	}
+
+	dbuf = dbwrap_record_get_value(locked);
+
+	lock.context.smbpid = smbpid;
+	lock.context.server = brl->server;
+	lock.context.ctx = brl;
+	lock.ntvfs = brlh->ntvfs;
+	lock.context.ctx = brl;
+	lock.start = start;
+	lock.size = size;
+	lock.lock_type = lock_type;
+	lock.notify_ptr = notify_ptr;
+
+	if (dbuf.dptr) {
+		/* there are existing locks - make sure they don't conflict */
+		locks = (struct lock_struct *)dbuf.dptr;
+		count = dbuf.dsize / sizeof(*locks);
+		for (i=0; i<count; i++) {
+			if (brl_tdb_conflict(&locks[i], &lock)) {
+				status = brl_tdb_lock_failed(brlh, &lock);
+				goto fail;
+			}
+		}
+	}
+
+	/* no conflicts - add it to the list of locks */
+	/* FIXME: a dbwrap_record_append() would help here! */
+	locks = talloc_array(locked, struct lock_struct, count+1);
+	if (!locks) {
+		status = NT_STATUS_NO_MEMORY;
+		goto fail;
+	}
+	if (dbuf.dsize > 0) {
+		memcpy(locks, dbuf.dptr, dbuf.dsize);
+	}
+	locks[count] = lock;
+
+	dbuf.dptr = (unsigned char *)locks;
+	dbuf.dsize += sizeof(lock);
+
+	status = dbwrap_record_store(locked, dbuf, TDB_REPLACE);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	talloc_free(locked);
+
+	/* the caller needs to know if the real lock was granted. If
+	   we have reached here then it must be a pending lock that
+	   was granted, so tell them the lock failed */
+	if (lock_type >= PENDING_READ_LOCK) {
+		return NT_STATUS_LOCK_NOT_GRANTED;
+	}
+
+	return NT_STATUS_OK;
+
+ fail:
+	talloc_free(locked);
+	return status;
+}
+
+
+/*
+  we are removing a lock that might be holding up a pending lock. Scan for pending
+  locks that cover this range and if we find any then notify the server that it should
+  retry the lock
+*/
+static void brl_tdb_notify_unlock(struct brl_context *brl,
+			      struct lock_struct *locks, int count, 
+			      struct lock_struct *removed_lock)
+{
+	int i, last_notice;
+
+	/* the last_notice logic is to prevent stampeding on a lock
+	   range. It prevents us sending hundreds of notifies on the
+	   same range of bytes. It doesn't prevent all possible
+	   stampedes, but it does prevent the most common problem */
+	last_notice = -1;
+
+	for (i=0;i<count;i++) {
+		if (locks[i].lock_type >= PENDING_READ_LOCK &&
+		    brl_tdb_overlap(&locks[i], removed_lock)) {
+			if (last_notice != -1 && brl_tdb_overlap(&locks[i], &locks[last_notice])) {
+				continue;
+			}
+			if (locks[i].lock_type == PENDING_WRITE_LOCK) {
+				last_notice = i;
+			}
+			imessaging_send_ptr(brl->imessaging_ctx, locks[i].context.server,
+					   MSG_BRL_RETRY, locks[i].notify_ptr);
+		}
+	}
+}
+
+
+/*
+  send notifications for all pending locks - the file is being closed by this
+  user
+*/
+static void brl_tdb_notify_all(struct brl_context *brl,
+			   struct lock_struct *locks, int count)
+{
+	int i;
+	for (i=0;i<count;i++) {
+		if (locks->lock_type >= PENDING_READ_LOCK) {
+			brl_tdb_notify_unlock(brl, locks, count, &locks[i]);
+		}
+	}
+}
+
+
+
+/*
+ Unlock a range of bytes.
+*/
+static NTSTATUS brl_tdb_unlock(struct brl_context *brl,
+			   struct brl_handle *brlh, 
+			   uint32_t smbpid,
+			   uint64_t start, uint64_t size)
+{
+	TDB_DATA kbuf, dbuf;
+	int count, i;
+	struct lock_struct *locks, *lock = NULL;
+	struct lock_context context;
+	struct db_record *locked;
+	NTSTATUS status;
+
+	kbuf.dptr = brlh->key.data;
+	kbuf.dsize = brlh->key.length;
+
+	if (brl_invalid_lock_range(start, size)) {
+		return NT_STATUS_INVALID_LOCK_RANGE;
+	}
+
+	locked = dbwrap_fetch_locked(brl->db, brl, kbuf);
+	if (!locked) {
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+	dbuf = dbwrap_record_get_value(locked);
+
+	context.smbpid = smbpid;
+	context.server = brl->server;
+	context.ctx = brl;
+
+	/* there are existing locks - find a match */
+	locks = (struct lock_struct *)dbuf.dptr;
+	count = dbuf.dsize / sizeof(*locks);
+
+	for (i=0; i<count; i++) {
+		lock = &locks[i];
+		if (brl_tdb_same_context(&lock->context, &context) &&
+		    lock->ntvfs == brlh->ntvfs &&
+		    lock->start == start &&
+		    lock->size == size &&
+		    lock->lock_type == WRITE_LOCK) {
+			break;
+		}
+	}
+	if (i < count) goto found;
+
+	for (i=0; i<count; i++) {
+		lock = &locks[i];
+		if (brl_tdb_same_context(&lock->context, &context) &&
+		    lock->ntvfs == brlh->ntvfs &&
+		    lock->start == start &&
+		    lock->size == size &&
+		    lock->lock_type < PENDING_READ_LOCK) {
+			break;
+		}
+	}
+
+found:
+	if (i < count) {
+		/* found it - delete it */
+		if (count == 1) {
+			status = dbwrap_record_delete(locked);
+			if (!NT_STATUS_IS_OK(status)) {
+				goto fail;
+			}
+		} else {
+			struct lock_struct removed_lock = *lock;
+			if (i < count-1) {
+				memmove(&locks[i], &locks[i+1], 
+					sizeof(*locks)*((count-1) - i));
+			}
+			count--;
+			
+			/* send notifications for any relevant pending locks */
+			brl_tdb_notify_unlock(brl, locks, count, &removed_lock);
+			
+			dbuf.dsize = count * sizeof(*locks);
+
+			status = dbwrap_record_store(locked, dbuf, TDB_REPLACE);
+			if (!NT_STATUS_IS_OK(status)) {
+				goto fail;
+			}
+		}
+
+		talloc_free(locked);
+		return NT_STATUS_OK;
+	}
+	
+	/* we didn't find it */
+	status = NT_STATUS_RANGE_NOT_LOCKED;
+
+ fail:
+	talloc_free(locked);
+	return status;
+}
+
+
+/*
+  remove a pending lock. This is called when the caller has either
+  given up trying to establish a lock or when they have succeeded in
+  getting it. In either case they no longer need to be notified.
+*/
+static NTSTATUS brl_tdb_remove_pending(struct brl_context *brl,
+				   struct brl_handle *brlh, 
+				   void *notify_ptr)
+{
+	TDB_DATA kbuf, dbuf;
+	int count, i;
+	struct lock_struct *locks;
+	NTSTATUS status;
+	struct db_record *locked;
+
+	kbuf.dptr = brlh->key.data;
+	kbuf.dsize = brlh->key.length;
+
+	locked = dbwrap_fetch_locked(brl->db, brl, kbuf);
+	if (!locked) {
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	dbuf = dbwrap_record_get_value(locked);
+	if (!dbuf.dptr) {
+		talloc_free(locked);
+		return NT_STATUS_RANGE_NOT_LOCKED;
+	}
+
+	/* there are existing locks - find a match */
+	locks = (struct lock_struct *)dbuf.dptr;
+	count = dbuf.dsize / sizeof(*locks);
+
+	for (i=0; i<count; i++) {
+		struct lock_struct *lock = &locks[i];
+		
+		if (lock->lock_type >= PENDING_READ_LOCK &&
+		    lock->notify_ptr == notify_ptr &&
+		    cluster_id_equal(&lock->context.server, &brl->server)) {
+			/* found it - delete it */
+			if (count == 1) {
+				status = dbwrap_record_delete(locked);
+				if (!NT_STATUS_IS_OK(status)) {
+					goto fail;
+				}
+			} else {
+				if (i < count-1) {
+					memmove(&locks[i], &locks[i+1], 
+						sizeof(*locks)*((count-1) - i));
+				}
+				count--;
+				dbuf.dsize = count * sizeof(*locks);
+				status = dbwrap_record_store(locked, dbuf,
+							     TDB_REPLACE);
+				if (!NT_STATUS_IS_OK(status)) {
+					goto fail;
+				}
+			}
+			
+			talloc_free(locked);
+			return NT_STATUS_OK;
+		}
+	}
+	
+	/* we didn't find it */
+	status = NT_STATUS_RANGE_NOT_LOCKED;
+
+ fail:
+	talloc_free(locked);
+	return status;
+}
+
+
+/*
+  Test if we are allowed to perform IO on a region of an open file
+*/
+static NTSTATUS brl_tdb_locktest(struct brl_context *brl,
+			     struct brl_handle *brlh,
+			     uint32_t smbpid, 
+			     uint64_t start, uint64_t size, 
+			     enum brl_type lock_type)
+{
+	TDB_DATA kbuf, dbuf;
+	int count, i;
+	struct lock_struct lock, *locks;
+	NTSTATUS status;
+
+	kbuf.dptr = brlh->key.data;
+	kbuf.dsize = brlh->key.length;
+
+	if (brl_invalid_lock_range(start, size)) {
+		return NT_STATUS_INVALID_LOCK_RANGE;
+	}
+
+	status = dbwrap_fetch(brl->db, brl, kbuf, &dbuf);
+	if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
+		return NT_STATUS_OK;
+	} else if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	lock.context.smbpid = smbpid;
+	lock.context.server = brl->server;
+	lock.context.ctx = brl;
+	lock.ntvfs = brlh->ntvfs;
+	lock.start = start;
+	lock.size = size;
+	lock.lock_type = lock_type;
+
+	/* there are existing locks - make sure they don't conflict */
+	locks = (struct lock_struct *)dbuf.dptr;
+	count = dbuf.dsize / sizeof(*locks);
+
+	for (i=0; i<count; i++) {
+		if (brl_tdb_conflict_other(&locks[i], &lock)) {
+			talloc_free(dbuf.dptr);
+			return NT_STATUS_FILE_LOCK_CONFLICT;
+		}
+	}
+
+	talloc_free(dbuf.dptr);
+	return NT_STATUS_OK;
+}
+
+
+/*
+ Remove any locks associated with a open file.
+*/
+static NTSTATUS brl_tdb_close(struct brl_context *brl,
+			  struct brl_handle *brlh)
+{
+	TDB_DATA kbuf, dbuf;
+	int count, i, dcount=0;
+	struct lock_struct *locks;
+	struct db_record *locked;
+	NTSTATUS status;
+
+	kbuf.dptr = brlh->key.data;
+	kbuf.dsize = brlh->key.length;
+
+	locked = dbwrap_fetch_locked(brl->db, brl, kbuf);
+	if (!locked) {
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+	dbuf = dbwrap_record_get_value(locked);
+	if (!dbuf.dptr) {
+		talloc_free(locked);
+		return NT_STATUS_OK;
+	}
+
+	/* there are existing locks - remove any for this fnum */
+	locks = (struct lock_struct *)dbuf.dptr;
+	count = dbuf.dsize / sizeof(*locks);
+
+	for (i=0; i<count; i++) {
+		struct lock_struct *lock = &locks[i];
+
+		if (lock->context.ctx == brl &&
+		    cluster_id_equal(&lock->context.server, &brl->server) &&
+		    lock->ntvfs == brlh->ntvfs) {
+			/* found it - delete it */
+			if (count > 1 && i < count-1) {
+				memmove(&locks[i], &locks[i+1], 
+					sizeof(*locks)*((count-1) - i));
+			}
+			count--;
+			i--;
+			dcount++;
+		}
+	}
+
+	status = NT_STATUS_OK;
+
+	if (count == 0) {
+		status = dbwrap_record_delete(locked);
+	} else if (dcount != 0) {
+		/* tell all pending lock holders for this file that
+		   they have a chance now. This is a bit indiscriminant,
+		   but works OK */
+		brl_tdb_notify_all(brl, locks, count);
+
+		dbuf.dsize = count * sizeof(*locks);
+
+		status = dbwrap_record_store(locked, dbuf, TDB_REPLACE);
+	}
+	talloc_free(locked);
+
+	return status;
+}
+
+static NTSTATUS brl_tdb_count(struct brl_context *brl, struct brl_handle *brlh,
+			      int *count)
+{
+	TDB_DATA kbuf, dbuf;
+	NTSTATUS status;
+
+	kbuf.dptr = brlh->key.data;
+	kbuf.dsize = brlh->key.length;
+	*count = 0;
+
+	status = dbwrap_fetch(brl->db, brl, kbuf, &dbuf);
+	if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
+		return NT_STATUS_OK;
+	} else if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+	*count = dbuf.dsize / sizeof(struct lock_struct);
+
+	talloc_free(dbuf.dptr);
+
+	return NT_STATUS_OK;
+}
+
+static const struct brlock_ops brlock_tdb_ops = {
+	.brl_init           = brl_tdb_init,
+	.brl_create_handle  = brl_tdb_create_handle,
+	.brl_lock           = brl_tdb_lock,
+	.brl_unlock         = brl_tdb_unlock,
+	.brl_remove_pending = brl_tdb_remove_pending,
+	.brl_locktest       = brl_tdb_locktest,
+	.brl_close          = brl_tdb_close,
+	.brl_count          = brl_tdb_count
+};
+
+
+void brl_tdb_init_ops(void)
+{
+	brlock_set_ops(&brlock_tdb_ops);
+}
diff --git a/source4/ntvfs/common/init.c b/source4/ntvfs/common/init.c
new file mode 100644
index 0000000..f8f8e27
--- /dev/null
+++ b/source4/ntvfs/common/init.c
@@ -0,0 +1,34 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   Copyright (C) Stefan Metzmacher 2006
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+  this is the change notify database. It implements mechanisms for
+  storing current change notify waiters in a tdb, and checking if a
+  given event matches any of the stored notify waiiters.
+*/
+
+#include "includes.h"
+#include "ntvfs/sysdep/sys_notify.h"
+
+NTSTATUS ntvfs_common_init(void);
+
+NTSTATUS ntvfs_common_init(void)
+{
+	return sys_notify_init();
+}
diff --git a/source4/ntvfs/common/notify.c b/source4/ntvfs/common/notify.c
new file mode 100644
index 0000000..a434fab
--- /dev/null
+++ b/source4/ntvfs/common/notify.c
@@ -0,0 +1,687 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   Copyright (C) Andrew Tridgell 2006
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+  this is the change notify database. It implements mechanisms for
+  storing current change notify waiters in a tdb, and checking if a
+  given event matches any of the stored notify waiiters.
+*/
+
+#include "includes.h"
+#include "system/filesys.h"
+#include "messaging/messaging.h"
+#include "lib/messaging/irpc.h"
+#include "librpc/gen_ndr/ndr_notify.h"
+#include "../lib/util/dlinklist.h"
+#include "ntvfs/common/ntvfs_common.h"
+#include "ntvfs/sysdep/sys_notify.h"
+#include "cluster/cluster.h"
+#include "param/param.h"
+#include "lib/util/tsort.h"
+#include "lib/dbwrap/dbwrap.h"
+#include "../lib/util/util_tdb.h"
+
+struct notify_context {
+	struct db_context *db;
+	struct server_id server;
+	struct imessaging_context *imessaging_ctx;
+	struct notify_list *list;
+	struct notify_array *array;
+	int64_t seqnum;
+	struct sys_notify_context *sys_notify_ctx;
+};
+
+
+struct notify_list {
+	struct notify_list *next, *prev;
+	void *private_data;
+	void (*callback)(void *, const struct notify_event *);
+	void *sys_notify_handle;
+	int depth;
+};
+
+#define NOTIFY_KEY "notify array"
+
+#define NOTIFY_ENABLE		"notify:enable"
+#define NOTIFY_ENABLE_DEFAULT	true
+
+static NTSTATUS notify_remove_all(struct notify_context *notify);
+static void notify_handler(struct imessaging_context *msg_ctx,
+			   void *private_data,
+			   uint32_t msg_type,
+			   struct server_id server_id,
+			   size_t num_fds,
+			   int *fds,
+			   DATA_BLOB *data);
+
+/*
+  destroy the notify context
+*/
+static int notify_destructor(struct notify_context *notify)
+{
+	imessaging_deregister(notify->imessaging_ctx, MSG_PVFS_NOTIFY, notify);
+	notify_remove_all(notify);
+	return 0;
+}
+
+/*
+  Open up the notify.tdb database. You should close it down using
+  talloc_free(). We need the imessaging_ctx to allow for notifications
+  via internal messages
+*/
+struct notify_context *notify_init(TALLOC_CTX *mem_ctx, struct server_id server, 
+				   struct imessaging_context *imessaging_ctx,
+				   struct loadparm_context *lp_ctx,
+				   struct tevent_context *ev,
+				   struct share_config *scfg)
+{
+	struct notify_context *notify;
+
+	if (share_bool_option(scfg, NOTIFY_ENABLE, NOTIFY_ENABLE_DEFAULT) != true) {
+		return NULL;
+	}
+
+	if (ev == NULL) {
+		return NULL;
+	}
+
+	notify = talloc(mem_ctx, struct notify_context);
+	if (notify == NULL) {
+		return NULL;
+	}
+
+	notify->db = cluster_db_tmp_open(notify, lp_ctx, "notify", TDB_SEQNUM);
+	if (notify->db == NULL) {
+		talloc_free(notify);
+		return NULL;
+	}
+
+	notify->server = server;
+	notify->imessaging_ctx = imessaging_ctx;
+	notify->list = NULL;
+	notify->array = NULL;
+	notify->seqnum = dbwrap_get_seqnum(notify->db);
+
+	talloc_set_destructor(notify, notify_destructor);
+
+	/* register with the messaging subsystem for the notify
+	   message type */
+	imessaging_register(notify->imessaging_ctx, notify,
+			   MSG_PVFS_NOTIFY, notify_handler);
+
+	notify->sys_notify_ctx = sys_notify_context_create(scfg, notify, ev);
+
+	return notify;
+}
+
+
+/*
+  lock the notify db
+*/
+static struct db_record *notify_lock(struct notify_context *notify)
+{
+	TDB_DATA key = string_term_tdb_data(NOTIFY_KEY);
+
+	return dbwrap_fetch_locked(notify->db, notify, key);
+}
+
+static void notify_unlock(struct db_record *lock)
+{
+	talloc_free(lock);
+}
+
+/*
+  load the notify array
+*/
+static NTSTATUS notify_load(struct notify_context *notify)
+{
+	TDB_DATA dbuf;
+	DATA_BLOB blob;
+	enum ndr_err_code ndr_err;
+	int seqnum;
+	NTSTATUS status;
+
+	seqnum = dbwrap_get_seqnum(notify->db);
+
+	if (seqnum == notify->seqnum && notify->array != NULL) {
+		return NT_STATUS_OK;
+	}
+
+	notify->seqnum = seqnum;
+
+	talloc_free(notify->array);
+	notify->array = talloc_zero(notify, struct notify_array);
+	NT_STATUS_HAVE_NO_MEMORY(notify->array);
+
+	status = dbwrap_fetch_bystring(notify->db, notify, NOTIFY_KEY, &dbuf);
+	if (!NT_STATUS_IS_OK(status)) {
+		return NT_STATUS_OK;
+	}
+
+	blob.data = dbuf.dptr;
+	blob.length = dbuf.dsize;
+
+	ndr_err = ndr_pull_struct_blob(&blob, notify->array, notify->array,
+				       (ndr_pull_flags_fn_t)ndr_pull_notify_array);
+	talloc_free(dbuf.dptr);
+	if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+		return ndr_map_error2ntstatus(ndr_err);
+	}
+
+	return NT_STATUS_OK;
+}
+
+/*
+  compare notify entries for sorting
+*/
+static int notify_compare(const void *p1, const void *p2)
+{
+	const struct notify_entry *e1 = p1, *e2 = p2;
+	return strcmp(e1->path, e2->path);
+}
+
+/*
+  save the notify array
+*/
+static NTSTATUS notify_save(struct notify_context *notify)
+{
+	TDB_DATA dbuf;
+	DATA_BLOB blob;
+	enum ndr_err_code ndr_err;
+	TALLOC_CTX *tmp_ctx;
+	NTSTATUS status;
+
+	/* if possible, remove some depth arrays */
+	while (notify->array->num_depths > 0 &&
+	       notify->array->depth[notify->array->num_depths-1].num_entries == 0) {
+		notify->array->num_depths--;
+	}
+
+	/* we might just be able to delete the record */
+	if (notify->array->num_depths == 0) {
+		return dbwrap_delete_bystring(notify->db, NOTIFY_KEY);
+	}
+
+	tmp_ctx = talloc_new(notify);
+	NT_STATUS_HAVE_NO_MEMORY(tmp_ctx);
+
+	ndr_err = ndr_push_struct_blob(&blob, tmp_ctx, notify->array,
+				       (ndr_push_flags_fn_t)ndr_push_notify_array);
+	if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+		talloc_free(tmp_ctx);
+		return ndr_map_error2ntstatus(ndr_err);
+	}
+
+	dbuf.dptr = blob.data;
+	dbuf.dsize = blob.length;
+
+	status = dbwrap_store_bystring(notify->db, NOTIFY_KEY, dbuf,
+				       TDB_REPLACE);
+	talloc_free(tmp_ctx);
+	return status;
+}
+
+
+/*
+  handle incoming notify messages
+*/
+static void notify_handler(struct imessaging_context *msg_ctx,
+			   void *private_data,
+			   uint32_t msg_type,
+			   struct server_id server_id,
+			   size_t num_fds,
+			   int *fds,
+			   DATA_BLOB *data)
+{
+	struct notify_context *notify = talloc_get_type(private_data, struct notify_context);
+	enum ndr_err_code ndr_err;
+	struct notify_event ev;
+	TALLOC_CTX *tmp_ctx = talloc_new(notify);
+	struct notify_list *listel;
+
+	if (num_fds != 0) {
+		DBG_WARNING("Received %zu fds, ignoring message\n", num_fds);
+		return;
+	}
+
+	if (tmp_ctx == NULL) {
+		return;
+	}
+
+	ndr_err = ndr_pull_struct_blob(data, tmp_ctx, &ev,
+				      (ndr_pull_flags_fn_t)ndr_pull_notify_event);
+	if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+		talloc_free(tmp_ctx);
+		return;
+	}
+
+	for (listel=notify->list;listel;listel=listel->next) {
+		if (listel->private_data == ev.private_data) {
+			listel->callback(listel->private_data, &ev);
+			break;
+		}
+	}
+
+	talloc_free(tmp_ctx);	
+}
+
+/*
+  callback from sys_notify telling us about changes from the OS
+*/
+static void sys_notify_callback(struct sys_notify_context *ctx, 
+				void *ptr, struct notify_event *ev)
+{
+	struct notify_list *listel = talloc_get_type(ptr, struct notify_list);
+	ev->private_data = listel;
+	listel->callback(listel->private_data, ev);
+}
+
+/*
+  add an entry to the notify array
+*/
+static NTSTATUS notify_add_array(struct notify_context *notify, struct notify_entry *e,
+				 void *private_data, int depth)
+{
+	int i;
+	struct notify_depth *d;
+	struct notify_entry *ee;
+
+	/* possibly expand the depths array */
+	if (depth >= notify->array->num_depths) {
+		d = talloc_realloc(notify->array, notify->array->depth, 
+				   struct notify_depth, depth+1);
+		NT_STATUS_HAVE_NO_MEMORY(d);
+		for (i=notify->array->num_depths;i<=depth;i++) {
+			ZERO_STRUCT(d[i]);
+		}
+		notify->array->depth = d;
+		notify->array->num_depths = depth+1;
+	}
+	d = &notify->array->depth[depth];
+
+	/* expand the entries array */
+	ee = talloc_realloc(notify->array->depth, d->entries, struct notify_entry,
+			    d->num_entries+1);
+	NT_STATUS_HAVE_NO_MEMORY(ee);
+	d->entries = ee;
+
+	d->entries[d->num_entries] = *e;
+	d->entries[d->num_entries].private_data = private_data;
+	d->entries[d->num_entries].server = notify->server;
+	d->entries[d->num_entries].path_len = strlen(e->path);
+	d->num_entries++;
+
+	d->max_mask |= e->filter;
+	d->max_mask_subdir |= e->subdir_filter;
+
+	TYPESAFE_QSORT(d->entries, d->num_entries, notify_compare);
+
+	/* recalculate the maximum masks */
+	d->max_mask = 0;
+	d->max_mask_subdir = 0;
+
+	for (i=0;i<d->num_entries;i++) {
+		d->max_mask |= d->entries[i].filter;
+		d->max_mask_subdir |= d->entries[i].subdir_filter;
+	}
+
+	return notify_save(notify);
+}
+
+/*
+  add a notify watch. This is called when a notify is first setup on a open
+  directory handle.
+*/
+NTSTATUS notify_add(struct notify_context *notify, struct notify_entry *e0,
+		    void (*callback)(void *, const struct notify_event *), 
+		    void *private_data)
+{
+	struct notify_entry e = *e0;
+	NTSTATUS status;
+	char *tmp_path = NULL;
+	struct notify_list *listel;
+	size_t len;
+	int depth;
+	struct db_record *locked;
+
+	/* see if change notify is enabled at all */
+	if (notify == NULL) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+
+	locked = notify_lock(notify);
+	if (!locked) {
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	status = notify_load(notify);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto done;
+	}
+
+	/* cope with /. on the end of the path */
+	len = strlen(e.path);
+	if (len > 1 && e.path[len-1] == '.' && e.path[len-2] == '/') {
+		tmp_path = talloc_strndup(notify, e.path, len-2);
+		if (tmp_path == NULL) {
+			status = NT_STATUS_NO_MEMORY;
+			goto done;
+		}
+		e.path = tmp_path;
+	}
+
+	depth = count_chars(e.path, '/');
+
+	listel = talloc_zero(notify, struct notify_list);
+	if (listel == NULL) {
+		status = NT_STATUS_NO_MEMORY;
+		goto done;
+	}
+
+	listel->private_data = private_data;
+	listel->callback = callback;
+	listel->depth = depth;
+	DLIST_ADD(notify->list, listel);
+
+	/* ignore failures from sys_notify */
+	if (notify->sys_notify_ctx != NULL) {
+		/*
+		  this call will modify e.filter and e.subdir_filter
+		  to remove bits handled by the backend
+		*/
+		status = sys_notify_watch(notify->sys_notify_ctx, &e,
+					  sys_notify_callback, listel, 
+					  &listel->sys_notify_handle);
+		if (NT_STATUS_IS_OK(status)) {
+			talloc_steal(listel, listel->sys_notify_handle);
+		}
+	}
+
+	/* if the system notify handler couldn't handle some of the
+	   filter bits, or couldn't handle a request for recursion
+	   then we need to install it in the array used for the
+	   intra-samba notify handling */
+	if (e.filter != 0 || e.subdir_filter != 0) {
+		status = notify_add_array(notify, &e, private_data, depth);
+	}
+
+done:
+	notify_unlock(locked);
+	talloc_free(tmp_path);
+
+	return status;
+}
+
+/*
+  remove a notify watch. Called when the directory handle is closed
+*/
+NTSTATUS notify_remove(struct notify_context *notify, void *private_data)
+{
+	NTSTATUS status;
+	struct notify_list *listel;
+	int i, depth;
+	struct notify_depth *d;
+	struct db_record *locked;
+
+	/* see if change notify is enabled at all */
+	if (notify == NULL) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+
+	for (listel=notify->list;listel;listel=listel->next) {
+		if (listel->private_data == private_data) {
+			DLIST_REMOVE(notify->list, listel);
+			break;
+		}
+	}
+	if (listel == NULL) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	depth = listel->depth;
+
+	talloc_free(listel);
+
+	locked = notify_lock(notify);
+	if (!locked) {
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	status = notify_load(notify);
+	if (!NT_STATUS_IS_OK(status)) {
+		notify_unlock(locked);
+		return status;
+	}
+
+	if (depth >= notify->array->num_depths) {
+		notify_unlock(locked);
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	/* we only have to search at the depth of this element */
+	d = &notify->array->depth[depth];
+
+	for (i=0;i<d->num_entries;i++) {
+		if (private_data == d->entries[i].private_data &&
+		    cluster_id_equal(&notify->server, &d->entries[i].server)) {
+			break;
+		}
+	}
+	if (i == d->num_entries) {
+		notify_unlock(locked);
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	if (i < d->num_entries-1) {
+		memmove(&d->entries[i], &d->entries[i+1], 
+			sizeof(d->entries[i])*(d->num_entries-(i+1)));
+	}
+	d->num_entries--;
+
+	status = notify_save(notify);
+
+	notify_unlock(locked);
+
+	return status;
+}
+
+/*
+  remove all notify watches for this messaging server
+*/
+static NTSTATUS notify_remove_all(struct notify_context *notify)
+{
+	NTSTATUS status;
+	int i, depth, del_count=0;
+	struct db_record *locked;
+
+	if (notify->list == NULL) {
+		return NT_STATUS_OK;
+	}
+
+	locked = notify_lock(notify);
+	if (!locked) {
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	status = notify_load(notify);
+	if (!NT_STATUS_IS_OK(status)) {
+		notify_unlock(locked);
+		return status;
+	}
+
+	/* we have to search for all entries across all depths, looking for matches
+	   for our server id */
+	for (depth=0;depth<notify->array->num_depths;depth++) {
+		struct notify_depth *d = &notify->array->depth[depth];
+		for (i=0;i<d->num_entries;i++) {
+			if (cluster_id_equal(&notify->server, &d->entries[i].server)) {
+				if (i < d->num_entries-1) {
+					memmove(&d->entries[i], &d->entries[i+1], 
+						sizeof(d->entries[i])*(d->num_entries-(i+1)));
+				}
+				i--;
+				d->num_entries--;
+				del_count++;
+			}
+		}
+	}
+
+	if (del_count > 0) {
+		status = notify_save(notify);
+	}
+
+	notify_unlock(locked);
+
+	return status;
+}
+
+
+/*
+  send a notify message to another messaging server
+*/
+static void notify_send(struct notify_context *notify, struct notify_entry *e,
+			const char *path, uint32_t action)
+{
+	struct notify_event ev;
+	DATA_BLOB data;
+	NTSTATUS status;
+	enum ndr_err_code ndr_err;
+	TALLOC_CTX *tmp_ctx;
+
+	ev.action = action;
+	ev.dir = discard_const_p(char, "");
+	ev.path = path;
+	ev.private_data = e->private_data;
+
+	tmp_ctx = talloc_new(notify);
+
+	ndr_err = ndr_push_struct_blob(&data, tmp_ctx, &ev, (ndr_push_flags_fn_t)ndr_push_notify_event);
+	if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+		talloc_free(tmp_ctx);
+		return;
+	}
+
+	status = imessaging_send(notify->imessaging_ctx, e->server,
+				MSG_PVFS_NOTIFY, &data);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(tmp_ctx);
+		return;
+	}
+
+	talloc_free(tmp_ctx);
+}
+
+
+/*
+  trigger a notify message for anyone waiting on a matching event
+
+  This function is called a lot, and needs to be very fast. The unusual data structure
+  and traversal is designed to be fast in the average case, even for large numbers of
+  notifies
+*/
+void notify_trigger(struct notify_context *notify,
+		    uint32_t action, uint32_t filter, const char *path)
+{
+	NTSTATUS status;
+	int depth;
+	const char *p, *next_p;
+
+	/* see if change notify is enabled at all */
+	if (notify == NULL) {
+		return;
+	}
+
+	status = notify_load(notify);
+	if (!NT_STATUS_IS_OK(status)) {
+		return;
+	}
+
+	/* loop along the given path, working with each directory depth separately */
+	for (depth=0,p=path;
+	     p && depth < notify->array->num_depths;
+	     p=next_p,depth++) {
+		int p_len = p - path;
+		int min_i, max_i, i;
+		struct notify_depth *d = &notify->array->depth[depth];
+		next_p = strchr(p+1, '/');
+
+		/* see if there are any entries at this depth */
+		if (d->num_entries == 0) continue;
+		
+		/* try to skip based on the maximum mask. If next_p is
+		 NULL then we know it will be a 'this directory'
+		 match, otherwise it must be a subdir match */
+		if (next_p != NULL) {
+			if (0 == (filter & d->max_mask_subdir)) {
+				continue;
+			}
+		} else {
+			if (0 == (filter & d->max_mask)) {
+				continue;
+			}
+		}
+
+		/* we know there is an entry here worth looking
+		 for. Use a bisection search to find the first entry
+		 with a matching path */
+		min_i = 0;
+		max_i = d->num_entries-1;
+
+		while (min_i < max_i) {
+			struct notify_entry *e;
+			int cmp;
+			i = (min_i+max_i)/2;
+			e = &d->entries[i];
+			cmp = strncmp(path, e->path, p_len);
+			if (cmp == 0) {
+				if (p_len == e->path_len) {
+					max_i = i;
+				} else {
+					max_i = i-1;
+				}
+			} else if (cmp < 0) {
+				max_i = i-1;
+			} else {
+				min_i = i+1;
+			}
+		}
+
+		if (min_i != max_i) {
+			/* none match */
+			continue;
+		}
+
+		/* we now know that the entries start at min_i */
+		for (i=min_i;i<d->num_entries;i++) {
+			struct notify_entry *e = &d->entries[i];
+			if (p_len != e->path_len ||
+			    strncmp(path, e->path, p_len) != 0) break;
+			if (next_p != NULL) {
+				if (0 == (filter & e->subdir_filter)) {
+					continue;
+				}
+			} else {
+				if (0 == (filter & e->filter)) {
+					continue;
+				}
+			}
+			notify_send(notify, e, path + e->path_len + 1, action);
+		}
+	}
+}
diff --git a/source4/ntvfs/common/ntvfs_common.h b/source4/ntvfs/common/ntvfs_common.h
new file mode 100644
index 0000000..37dd553
--- /dev/null
+++ b/source4/ntvfs/common/ntvfs_common.h
@@ -0,0 +1,32 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   Copyright (C) Stefan Metzmacher 2007
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _NTVFS_COMMON_H_
+#define _NTVFS_COMMON_H_
+
+#include "ntvfs/ntvfs.h"
+
+struct notify_event;
+struct notify_entry;
+
+#include "ntvfs/common/brlock.h"
+#include "ntvfs/common/opendb.h"
+#include "ntvfs/common/proto.h"
+
+#endif /* _NTVFS_COMMON_H_ */
diff --git a/source4/ntvfs/common/opendb.c b/source4/ntvfs/common/opendb.c
new file mode 100644
index 0000000..29081ef
--- /dev/null
+++ b/source4/ntvfs/common/opendb.c
@@ -0,0 +1,200 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   Copyright (C) Andrew Tridgell 2004
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+  this is the open files database. It implements shared storage of
+  what files are open between server instances, and implements the rules
+  of shared access to files.
+
+  The caller needs to provide a file_key, which specifies what file
+  they are talking about. This needs to be a unique key across all
+  filesystems, and is usually implemented in terms of a device/inode
+  pair.
+
+  Before any operations can be performed the caller needs to establish
+  a lock on the record associated with file_key. That is done by
+  calling odb_lock(). The caller releases this lock by calling
+  talloc_free() on the returned handle.
+
+  All other operations on a record are done by passing the odb_lock()
+  handle back to this module. The handle contains internal
+  information about what file_key is being operated on.
+*/
+
+#include "includes.h"
+#include "ntvfs/ntvfs.h"
+#include "ntvfs/common/ntvfs_common.h"
+#include "cluster/cluster.h"
+#include "param/param.h"
+
+static const struct opendb_ops *ops;
+
+/*
+  set the odb backend ops
+*/
+void odb_set_ops(const struct opendb_ops *new_ops)
+{
+	ops = new_ops;
+}
+
+/*
+  Open up the openfiles.tdb database. Close it down using
+  talloc_free(). We need the imessaging_ctx to allow for pending open
+  notifications.
+*/
+struct odb_context *odb_init(TALLOC_CTX *mem_ctx, 
+				      struct ntvfs_context *ntvfs_ctx)
+{
+	if (ops == NULL) {
+		odb_tdb_init_ops();
+	}
+	return ops->odb_init(mem_ctx, ntvfs_ctx);
+}
+
+/*
+  get a lock on a entry in the odb. This call returns a lock handle,
+  which the caller should unlock using talloc_free().
+*/
+struct odb_lock *odb_lock(TALLOC_CTX *mem_ctx,
+				   struct odb_context *odb, DATA_BLOB *file_key)
+{
+	return ops->odb_lock(mem_ctx, odb, file_key);
+}
+
+DATA_BLOB odb_get_key(TALLOC_CTX *mem_ctx, struct odb_lock *lck)
+{
+	return ops->odb_get_key(mem_ctx, lck);
+}
+
+/*
+  register an open file in the open files database.
+  The share_access rules are implemented by odb_can_open()
+  and it's needed to call odb_can_open() before
+  odb_open_file() otherwise NT_STATUS_INTERNAL_ERROR is returned
+
+  Note that the path is only used by the delete on close logic, not
+  for comparing with other filenames
+*/
+NTSTATUS odb_open_file(struct odb_lock *lck,
+				void *file_handle, const char *path,
+				int *fd, NTTIME open_write_time,
+				bool allow_level_II_oplock,
+				uint32_t oplock_level, uint32_t *oplock_granted)
+{
+	return ops->odb_open_file(lck, file_handle, path,
+				  fd, open_write_time,
+				  allow_level_II_oplock,
+				  oplock_level, oplock_granted);
+}
+
+
+/*
+  register a pending open file in the open files database
+*/
+NTSTATUS odb_open_file_pending(struct odb_lock *lck, void *private_data)
+{
+	return ops->odb_open_file_pending(lck, private_data);
+}
+
+
+/*
+  remove a opendb entry
+*/
+NTSTATUS odb_close_file(struct odb_lock *lck, void *file_handle,
+				 const char **delete_path)
+{
+	return ops->odb_close_file(lck, file_handle, delete_path);
+}
+
+
+/*
+  remove a pending opendb entry
+*/
+NTSTATUS odb_remove_pending(struct odb_lock *lck, void *private_data)
+{
+	return ops->odb_remove_pending(lck, private_data);
+}
+
+
+/*
+  rename the path in a open file
+*/
+NTSTATUS odb_rename(struct odb_lock *lck, const char *path)
+{
+	return ops->odb_rename(lck, path);
+}
+
+/*
+  get back the path of an open file
+*/
+NTSTATUS odb_get_path(struct odb_lock *lck, const char **path)
+{
+	return ops->odb_get_path(lck, path);
+}
+
+/*
+  update delete on close flag on an open file
+*/
+NTSTATUS odb_set_delete_on_close(struct odb_lock *lck, bool del_on_close)
+{
+	return ops->odb_set_delete_on_close(lck, del_on_close);
+}
+
+/*
+  update the write time on an open file
+*/
+NTSTATUS odb_set_write_time(struct odb_lock *lck,
+			    NTTIME write_time, bool force)
+{
+	return ops->odb_set_write_time(lck, write_time, force);
+}
+
+/*
+  return the current value of the delete_on_close bit,
+  and the current write time.
+*/
+NTSTATUS odb_get_file_infos(struct odb_context *odb, DATA_BLOB *key,
+			    bool *del_on_close, NTTIME *write_time)
+{
+	return ops->odb_get_file_infos(odb, key, del_on_close, write_time);
+}
+
+/*
+  determine if a file can be opened with the given share_access,
+  create_options and access_mask
+*/
+NTSTATUS odb_can_open(struct odb_lock *lck,
+			       uint32_t stream_id, uint32_t share_access,
+			       uint32_t access_mask, bool delete_on_close,
+			       uint32_t open_disposition, bool break_to_none)
+{
+	return ops->odb_can_open(lck, stream_id, share_access, access_mask,
+				 delete_on_close, open_disposition, break_to_none);
+}
+
+NTSTATUS odb_update_oplock(struct odb_lock *lck, void *file_handle,
+				    uint32_t oplock_level)
+{
+	return ops->odb_update_oplock(lck, file_handle, oplock_level);
+}
+
+NTSTATUS odb_break_oplocks(struct odb_lock *lck)
+{
+	return ops->odb_break_oplocks(lck);
+}
diff --git a/source4/ntvfs/common/opendb.h b/source4/ntvfs/common/opendb.h
new file mode 100644
index 0000000..1bfc6aa
--- /dev/null
+++ b/source4/ntvfs/common/opendb.h
@@ -0,0 +1,59 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   open database code - common include
+
+   Copyright (C) Andrew Tridgell 2007
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+struct opendb_ops {
+	struct odb_context *(*odb_init)(TALLOC_CTX *mem_ctx, 
+					struct ntvfs_context *ntvfs_ctx);
+	struct odb_lock *(*odb_lock)(TALLOC_CTX *mem_ctx,
+				     struct odb_context *odb, DATA_BLOB *file_key);
+	DATA_BLOB (*odb_get_key)(TALLOC_CTX *mem_ctx, struct odb_lock *lck);
+	NTSTATUS (*odb_open_file)(struct odb_lock *lck,
+				  void *file_handle, const char *path,
+				  int *fd, NTTIME open_write_time,
+				  bool allow_level_II_oplock,
+				  uint32_t oplock_level, uint32_t *oplock_granted);
+	NTSTATUS (*odb_open_file_pending)(struct odb_lock *lck, void *private_data);
+	NTSTATUS (*odb_close_file)(struct odb_lock *lck, void *file_handle,
+				   const char **delete_path);
+	NTSTATUS (*odb_remove_pending)(struct odb_lock *lck, void *private_data);
+	NTSTATUS (*odb_rename)(struct odb_lock *lck, const char *path);
+	NTSTATUS (*odb_get_path)(struct odb_lock *lck, const char **path);
+	NTSTATUS (*odb_set_delete_on_close)(struct odb_lock *lck, bool del_on_close);
+	NTSTATUS (*odb_set_write_time)(struct odb_lock *lck,
+				       NTTIME write_time, bool force);
+	NTSTATUS (*odb_get_file_infos)(struct odb_context *odb, DATA_BLOB *key,
+				       bool *del_on_close, NTTIME *write_time);
+	NTSTATUS (*odb_can_open)(struct odb_lock *lck,
+				 uint32_t stream_id, uint32_t share_access,
+				 uint32_t access_mask, bool delete_on_close,
+				 uint32_t open_disposition, bool break_to_none);
+	NTSTATUS (*odb_update_oplock)(struct odb_lock *lck, void *file_handle,
+				      uint32_t oplock_level);
+	NTSTATUS (*odb_break_oplocks)(struct odb_lock *lck);
+};
+
+struct opendb_oplock_break {
+	void *file_handle;
+	uint8_t level;
+};
+
+void odb_set_ops(const struct opendb_ops *new_ops);
+void odb_tdb_init_ops(void);
diff --git a/source4/ntvfs/common/opendb_tdb.c b/source4/ntvfs/common/opendb_tdb.c
new file mode 100644
index 0000000..9fe0b26
--- /dev/null
+++ b/source4/ntvfs/common/opendb_tdb.c
@@ -0,0 +1,886 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   Copyright (C) Andrew Tridgell 2004
+   Copyright (C) Stefan Metzmacher 2008
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+  this is the open files database, tdb backend. It implements shared
+  storage of what files are open between server instances, and
+  implements the rules of shared access to files.
+
+  The caller needs to provide a file_key, which specifies what file
+  they are talking about. This needs to be a unique key across all
+  filesystems, and is usually implemented in terms of a device/inode
+  pair.
+
+  Before any operations can be performed the caller needs to establish
+  a lock on the record associated with file_key. That is done by
+  calling odb_lock(). The caller releases this lock by calling
+  talloc_free() on the returned handle.
+
+  All other operations on a record are done by passing the odb_lock()
+  handle back to this module. The handle contains internal
+  information about what file_key is being operated on.
+*/
+
+#include "includes.h"
+#include "system/filesys.h"
+#include "lib/dbwrap/dbwrap.h"
+#include "messaging/messaging.h"
+#include "lib/messaging/irpc.h"
+#include "librpc/gen_ndr/ndr_opendb.h"
+#include "ntvfs/ntvfs.h"
+#include "ntvfs/common/ntvfs_common.h"
+#include "cluster/cluster.h"
+#include "param/param.h"
+#include "ntvfs/sysdep/sys_lease.h"
+
+struct odb_context {
+	struct db_context *db;
+	struct ntvfs_context *ntvfs_ctx;
+	bool oplocks;
+	struct sys_lease_context *lease_ctx;
+};
+
+/*
+  an odb lock handle. You must obtain one of these using odb_lock() before doing
+  any other operations. 
+*/
+struct odb_lock {
+	struct odb_context *odb;
+	struct db_record *locked;
+
+	struct opendb_file file;
+
+	struct {
+		struct opendb_entry *e;
+		bool attrs_only;
+	} can_open;
+};
+
+static NTSTATUS odb_oplock_break_send(struct imessaging_context *msg_ctx,
+				      struct opendb_entry *e,
+				      uint8_t level);
+
+/*
+  Open up the openfiles.tdb database. Close it down using
+  talloc_free(). We need the imessaging_ctx to allow for pending open
+  notifications.
+*/
+static struct odb_context *odb_tdb_init(TALLOC_CTX *mem_ctx, 
+					struct ntvfs_context *ntvfs_ctx)
+{
+	struct odb_context *odb;
+
+	odb = talloc(mem_ctx, struct odb_context);
+	if (odb == NULL) {
+		return NULL;
+	}
+
+	odb->db = cluster_db_tmp_open(odb, ntvfs_ctx->lp_ctx,
+				      "openfiles", TDB_DEFAULT);
+	if (odb->db == NULL) {
+		talloc_free(odb);
+		return NULL;
+	}
+
+	odb->ntvfs_ctx = ntvfs_ctx;
+
+	odb->oplocks = share_bool_option(ntvfs_ctx->config, SHARE_OPLOCKS, SHARE_OPLOCKS_DEFAULT);
+
+	odb->lease_ctx = sys_lease_context_create(ntvfs_ctx->config, odb,
+						  ntvfs_ctx->event_ctx,
+						  ntvfs_ctx->msg_ctx,
+						  odb_oplock_break_send);
+
+	return odb;
+}
+
+static NTSTATUS odb_pull_record(struct odb_lock *lck, struct opendb_file *file);
+
+/*
+  get a lock on a entry in the odb. This call returns a lock handle,
+  which the caller should unlock using talloc_free().
+*/
+static struct odb_lock *odb_tdb_lock(TALLOC_CTX *mem_ctx,
+				     struct odb_context *odb, DATA_BLOB *file_key)
+{
+	struct odb_lock *lck;
+	NTSTATUS status;
+	TDB_DATA key;
+
+	lck = talloc(mem_ctx, struct odb_lock);
+	if (lck == NULL) {
+		return NULL;
+	}
+
+	lck->odb = talloc_reference(lck, odb);
+	key.dptr = talloc_memdup(lck, file_key->data, file_key->length);
+	key.dsize = file_key->length;
+	if (key.dptr == NULL) {
+		talloc_free(lck);
+		return NULL;
+	}
+
+	lck->locked = dbwrap_fetch_locked(odb->db, lck, key);
+	if (!lck->locked) {
+		talloc_free(lck);
+		return NULL;
+	}
+
+	ZERO_STRUCT(lck->can_open);
+
+	status = odb_pull_record(lck, &lck->file);
+	if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
+		/* initialise a blank structure */
+		ZERO_STRUCT(lck->file);
+	} else if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(lck);
+		return NULL;
+	}
+	
+	return lck;
+}
+
+static DATA_BLOB odb_tdb_get_key(TALLOC_CTX *mem_ctx, struct odb_lock *lck)
+{
+	TDB_DATA key = dbwrap_record_get_key(lck->locked);
+	return data_blob_talloc(mem_ctx, key.dptr, key.dsize);
+}
+
+
+/*
+  determine if two odb_entry structures conflict
+
+  return NT_STATUS_OK on no conflict
+*/
+static NTSTATUS share_conflict(struct opendb_entry *e1,
+			       uint32_t stream_id,
+			       uint32_t share_access,
+			       uint32_t access_mask)
+{
+	/* if either open involves no read.write or delete access then
+	   it can't conflict */
+	if (!(e1->access_mask & (SEC_FILE_WRITE_DATA |
+				 SEC_FILE_APPEND_DATA |
+				 SEC_FILE_READ_DATA |
+				 SEC_FILE_EXECUTE |
+				 SEC_STD_DELETE))) {
+		return NT_STATUS_OK;
+	}
+	if (!(access_mask & (SEC_FILE_WRITE_DATA |
+			     SEC_FILE_APPEND_DATA |
+			     SEC_FILE_READ_DATA |
+			     SEC_FILE_EXECUTE |
+			     SEC_STD_DELETE))) {
+		return NT_STATUS_OK;
+	}
+
+	/* data IO access masks. This is skipped if the two open handles
+	   are on different streams (as in that case the masks don't
+	   interact) */
+	if (e1->stream_id != stream_id) {
+		return NT_STATUS_OK;
+	}
+
+#define CHECK_MASK(am, right, sa, share) \
+	if (((am) & (right)) && !((sa) & (share))) return NT_STATUS_SHARING_VIOLATION
+
+	CHECK_MASK(e1->access_mask, SEC_FILE_WRITE_DATA | SEC_FILE_APPEND_DATA,
+		   share_access, NTCREATEX_SHARE_ACCESS_WRITE);
+	CHECK_MASK(access_mask, SEC_FILE_WRITE_DATA | SEC_FILE_APPEND_DATA,
+		   e1->share_access, NTCREATEX_SHARE_ACCESS_WRITE);
+	
+	CHECK_MASK(e1->access_mask, SEC_FILE_READ_DATA | SEC_FILE_EXECUTE,
+		   share_access, NTCREATEX_SHARE_ACCESS_READ);
+	CHECK_MASK(access_mask, SEC_FILE_READ_DATA | SEC_FILE_EXECUTE,
+		   e1->share_access, NTCREATEX_SHARE_ACCESS_READ);
+
+	CHECK_MASK(e1->access_mask, SEC_STD_DELETE,
+		   share_access, NTCREATEX_SHARE_ACCESS_DELETE);
+	CHECK_MASK(access_mask, SEC_STD_DELETE,
+		   e1->share_access, NTCREATEX_SHARE_ACCESS_DELETE);
+#undef CHECK_MASK
+	return NT_STATUS_OK;
+}
+
+/*
+  pull a record, translating from the db format to the opendb_file structure defined
+  in opendb.idl
+*/
+static NTSTATUS odb_pull_record(struct odb_lock *lck, struct opendb_file *file)
+{
+	TDB_DATA dbuf;
+	DATA_BLOB blob;
+	enum ndr_err_code ndr_err;
+
+	dbuf = dbwrap_record_get_value(lck->locked);
+	if (!dbuf.dptr) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	blob.data = dbuf.dptr;
+	blob.length = dbuf.dsize;
+
+	ndr_err = ndr_pull_struct_blob(&blob, lck, file, (ndr_pull_flags_fn_t)ndr_pull_opendb_file);
+	if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+		return ndr_map_error2ntstatus(ndr_err);
+	}
+
+	return NT_STATUS_OK;
+}
+
+/*
+  push a record, translating from the opendb_file structure defined in opendb.idl
+*/
+static NTSTATUS odb_push_record(struct odb_lock *lck, struct opendb_file *file)
+{
+	TDB_DATA dbuf;
+	DATA_BLOB blob;
+	enum ndr_err_code ndr_err;
+	NTSTATUS status;
+
+	if (file->num_entries == 0) {
+		return dbwrap_record_delete(lck->locked);
+	}
+
+	ndr_err = ndr_push_struct_blob(&blob, lck, file, (ndr_push_flags_fn_t)ndr_push_opendb_file);
+	if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+		return ndr_map_error2ntstatus(ndr_err);
+	}
+
+	dbuf.dptr = blob.data;
+	dbuf.dsize = blob.length;
+		
+	status = dbwrap_record_store(lck->locked, dbuf, TDB_REPLACE);
+	data_blob_free(&blob);
+	return status;
+}
+
+/*
+  send an oplock break to a client
+*/
+static NTSTATUS odb_oplock_break_send(struct imessaging_context *msg_ctx,
+				      struct opendb_entry *e,
+				      uint8_t level)
+{
+	NTSTATUS status;
+	struct opendb_oplock_break op_break;
+	DATA_BLOB blob;
+
+	ZERO_STRUCT(op_break);
+
+	/* tell the server handling this open file about the need to send the client
+	   a break */
+	op_break.file_handle	= e->file_handle;
+	op_break.level		= level;
+
+	blob = data_blob_const(&op_break, sizeof(op_break));
+
+	status = imessaging_send(msg_ctx, e->server,
+				MSG_NTVFS_OPLOCK_BREAK, &blob);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	return NT_STATUS_OK;
+}
+
+static bool access_attributes_only(uint32_t access_mask,
+				   uint32_t open_disposition,
+				   bool break_to_none)
+{
+	switch (open_disposition) {
+	case NTCREATEX_DISP_SUPERSEDE:
+	case NTCREATEX_DISP_OVERWRITE_IF:
+	case NTCREATEX_DISP_OVERWRITE:
+		return false;
+	default:
+		break;
+	}
+
+	if (break_to_none) {
+		return false;
+	}
+
+#define CHECK_MASK(m,g) ((m) && (((m) & ~(g))==0) && (((m) & (g)) != 0))
+	return CHECK_MASK(access_mask,
+			  SEC_STD_SYNCHRONIZE |
+			  SEC_FILE_READ_ATTRIBUTE |
+			  SEC_FILE_WRITE_ATTRIBUTE);
+#undef CHECK_MASK
+}
+
+static NTSTATUS odb_tdb_open_can_internal(struct odb_context *odb,
+					  const struct opendb_file *file,
+					  uint32_t stream_id, uint32_t share_access,
+					  uint32_t access_mask, bool delete_on_close,
+					  uint32_t open_disposition, bool break_to_none,
+					  bool *_attrs_only)
+{
+	NTSTATUS status;
+	uint32_t i;
+	bool attrs_only = false;
+
+	/* see if anyone has an oplock, which we need to break */
+	for (i=0;i<file->num_entries;i++) {
+		if (file->entries[i].oplock_level == OPLOCK_BATCH) {
+			bool oplock_return = OPLOCK_BREAK_TO_LEVEL_II;
+			/* if this is an attribute only access
+			 * it doesn't conflict with a BACTCH oplock
+			 * but we'll not grant the oplock below
+			 */
+			attrs_only = access_attributes_only(access_mask,
+							    open_disposition,
+							    break_to_none);
+			if (attrs_only) {
+				break;
+			}
+			/* a batch oplock caches close calls, which
+			   means the client application might have
+			   already closed the file. We have to allow
+			   this close to propagate by sending a oplock
+			   break request and suspending this call
+			   until the break is acknowledged or the file
+			   is closed */
+			if (break_to_none ||
+			    !file->entries[i].allow_level_II_oplock) {
+				oplock_return = OPLOCK_BREAK_TO_NONE;
+			}
+			odb_oplock_break_send(odb->ntvfs_ctx->msg_ctx,
+					      &file->entries[i],
+					      oplock_return);
+			return NT_STATUS_OPLOCK_NOT_GRANTED;
+		}
+	}
+
+	if (file->delete_on_close) {
+		/* while delete on close is set, no new opens are allowed */
+		return NT_STATUS_DELETE_PENDING;
+	}
+
+	if (file->num_entries != 0 && delete_on_close) {
+		return NT_STATUS_SHARING_VIOLATION;
+	}
+
+	/* check for sharing violations */
+	for (i=0;i<file->num_entries;i++) {
+		status = share_conflict(&file->entries[i], stream_id,
+					share_access, access_mask);
+		NT_STATUS_NOT_OK_RETURN(status);
+	}
+
+	/* we now know the open could succeed, but we need to check
+	   for any exclusive oplocks. We can't grant a second open
+	   till these are broken. Note that we check for batch oplocks
+	   before checking for sharing violations, and check for
+	   exclusive oplocks afterwards. */
+	for (i=0;i<file->num_entries;i++) {
+		if (file->entries[i].oplock_level == OPLOCK_EXCLUSIVE) {
+			bool oplock_return = OPLOCK_BREAK_TO_LEVEL_II;
+			/* if this is an attribute only access
+			 * it doesn't conflict with an EXCLUSIVE oplock
+			 * but we'll not grant the oplock below
+			 */
+			attrs_only = access_attributes_only(access_mask,
+							    open_disposition,
+							    break_to_none);
+			if (attrs_only) {
+				break;
+			}
+			/*
+			 * send an oplock break to the holder of the
+			 * oplock and tell caller to retry later
+			 */
+			if (break_to_none ||
+			    !file->entries[i].allow_level_II_oplock) {
+				oplock_return = OPLOCK_BREAK_TO_NONE;
+			}
+			odb_oplock_break_send(odb->ntvfs_ctx->msg_ctx,
+					      &file->entries[i],
+					      oplock_return);
+			return NT_STATUS_OPLOCK_NOT_GRANTED;
+		}
+	}
+
+	if (_attrs_only) {
+		*_attrs_only = attrs_only;
+	}
+	return NT_STATUS_OK;
+}
+
+/*
+  register an open file in the open files database.
+  The share_access rules are implemented by odb_can_open()
+  and it's needed to call odb_can_open() before
+  odb_open_file() otherwise NT_STATUS_INTERNAL_ERROR is returned
+
+  Note that the path is only used by the delete on close logic, not
+  for comparing with other filenames
+*/
+static NTSTATUS odb_tdb_open_file(struct odb_lock *lck,
+				  void *file_handle, const char *path,
+				  int *fd, NTTIME open_write_time,
+				  bool allow_level_II_oplock,
+				  uint32_t oplock_level, uint32_t *oplock_granted)
+{
+	struct odb_context *odb = lck->odb;
+
+	if (!lck->can_open.e) {
+		return NT_STATUS_INTERNAL_ERROR;
+	}
+
+	if (odb->oplocks == false) {
+		oplock_level = OPLOCK_NONE;
+	}
+
+	if (!oplock_granted) {
+		oplock_level = OPLOCK_NONE;
+	}
+
+	if (lck->file.path == NULL) {
+		lck->file.path = talloc_strdup(lck, path);
+		NT_STATUS_HAVE_NO_MEMORY(lck->file.path);
+	}
+
+	if (lck->file.open_write_time == 0) {
+		lck->file.open_write_time = open_write_time;
+	}
+
+	/*
+	  possibly grant an exclusive, batch or level2 oplock
+	*/
+	if (lck->can_open.attrs_only) {
+		oplock_level	= OPLOCK_NONE;
+	} else if (oplock_level == OPLOCK_EXCLUSIVE) {
+		if (lck->file.num_entries == 0) {
+			oplock_level	= OPLOCK_EXCLUSIVE;
+		} else if (allow_level_II_oplock) {
+			oplock_level	= OPLOCK_LEVEL_II;
+		} else {
+			oplock_level	= OPLOCK_NONE;
+		}
+	} else if (oplock_level == OPLOCK_BATCH) {
+		if (lck->file.num_entries == 0) {
+			oplock_level	= OPLOCK_BATCH;
+		} else if (allow_level_II_oplock) {
+			oplock_level	= OPLOCK_LEVEL_II;
+		} else {
+			oplock_level	= OPLOCK_NONE;
+		}
+	} else if (oplock_level == OPLOCK_LEVEL_II) {
+		oplock_level	= OPLOCK_LEVEL_II;
+	} else {
+		oplock_level	= OPLOCK_NONE;
+	}
+
+	lck->can_open.e->file_handle		= file_handle;
+	lck->can_open.e->fd			= fd;
+	lck->can_open.e->allow_level_II_oplock	= allow_level_II_oplock;
+	lck->can_open.e->oplock_level		= oplock_level;
+
+	if (odb->lease_ctx && fd) {
+		NTSTATUS status;
+		status = sys_lease_setup(odb->lease_ctx, lck->can_open.e);
+		NT_STATUS_NOT_OK_RETURN(status);
+	}
+
+	if (oplock_granted) {
+		if (lck->can_open.e->oplock_level == OPLOCK_EXCLUSIVE) {
+			*oplock_granted	= EXCLUSIVE_OPLOCK_RETURN;
+		} else if (lck->can_open.e->oplock_level == OPLOCK_BATCH) {
+			*oplock_granted	= BATCH_OPLOCK_RETURN;
+		} else if (lck->can_open.e->oplock_level == OPLOCK_LEVEL_II) {
+			*oplock_granted	= LEVEL_II_OPLOCK_RETURN;
+		} else {
+			*oplock_granted	= NO_OPLOCK_RETURN;
+		}
+	}
+
+	/* it doesn't conflict, so add it to the end */
+	lck->file.entries = talloc_realloc(lck, lck->file.entries,
+					   struct opendb_entry,
+					   lck->file.num_entries+1);
+	NT_STATUS_HAVE_NO_MEMORY(lck->file.entries);
+
+	lck->file.entries[lck->file.num_entries] = *lck->can_open.e;
+	lck->file.num_entries++;
+
+	talloc_free(lck->can_open.e);
+	lck->can_open.e = NULL;
+
+	return odb_push_record(lck, &lck->file);
+}
+
+
+/*
+  register a pending open file in the open files database
+*/
+static NTSTATUS odb_tdb_open_file_pending(struct odb_lock *lck, void *private_data)
+{
+	struct odb_context *odb = lck->odb;
+
+	if (lck->file.path == NULL) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	lck->file.pending = talloc_realloc(lck, lck->file.pending,
+					   struct opendb_pending,
+					   lck->file.num_pending+1);
+	NT_STATUS_HAVE_NO_MEMORY(lck->file.pending);
+
+	lck->file.pending[lck->file.num_pending].server = odb->ntvfs_ctx->server_id;
+	lck->file.pending[lck->file.num_pending].notify_ptr = private_data;
+
+	lck->file.num_pending++;
+
+	return odb_push_record(lck, &lck->file);
+}
+
+
+/*
+  remove a opendb entry
+*/
+static NTSTATUS odb_tdb_close_file(struct odb_lock *lck, void *file_handle,
+				   const char **_delete_path)
+{
+	struct odb_context *odb = lck->odb;
+	const char *delete_path = NULL;
+	int i;
+
+	if (lck->file.path == NULL) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	/* find the entry, and delete it */
+	for (i=0;i<lck->file.num_entries;i++) {
+		if (file_handle == lck->file.entries[i].file_handle &&
+		    cluster_id_equal(&odb->ntvfs_ctx->server_id, &lck->file.entries[i].server)) {
+			if (lck->file.entries[i].delete_on_close) {
+				lck->file.delete_on_close = true;
+			}
+			if (odb->lease_ctx && lck->file.entries[i].fd) {
+				NTSTATUS status;
+				status = sys_lease_remove(odb->lease_ctx, &lck->file.entries[i]);
+				NT_STATUS_NOT_OK_RETURN(status);
+			}
+			if (i < lck->file.num_entries-1) {
+				memmove(lck->file.entries+i, lck->file.entries+i+1,
+					(lck->file.num_entries - (i+1)) *
+					sizeof(struct opendb_entry));
+			}
+			break;
+		}
+	}
+
+	if (i == lck->file.num_entries) {
+		return NT_STATUS_UNSUCCESSFUL;
+	}
+
+	/* send any pending notifications, removing them once sent */
+	for (i=0;i<lck->file.num_pending;i++) {
+		imessaging_send_ptr(odb->ntvfs_ctx->msg_ctx,
+				   lck->file.pending[i].server,
+				   MSG_PVFS_RETRY_OPEN,
+				   lck->file.pending[i].notify_ptr);
+	}
+	lck->file.num_pending = 0;
+
+	lck->file.num_entries--;
+
+	if (lck->file.num_entries == 0 && lck->file.delete_on_close) {
+		delete_path = lck->file.path;
+	}
+
+	if (_delete_path) {
+		*_delete_path = delete_path;
+	}
+
+	return odb_push_record(lck, &lck->file);
+}
+
+/*
+  update the oplock level of the client
+*/
+static NTSTATUS odb_tdb_update_oplock(struct odb_lock *lck, void *file_handle,
+				      uint32_t oplock_level)
+{
+	struct odb_context *odb = lck->odb;
+	int i;
+
+	if (lck->file.path == NULL) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	/* find the entry, and update it */
+	for (i=0;i<lck->file.num_entries;i++) {
+		if (file_handle == lck->file.entries[i].file_handle &&
+		    cluster_id_equal(&odb->ntvfs_ctx->server_id, &lck->file.entries[i].server)) {
+			lck->file.entries[i].oplock_level = oplock_level;
+
+			if (odb->lease_ctx && lck->file.entries[i].fd) {
+				NTSTATUS status;
+				status = sys_lease_update(odb->lease_ctx, &lck->file.entries[i]);
+				NT_STATUS_NOT_OK_RETURN(status);
+			}
+
+			break;
+		}
+	}
+
+	if (i == lck->file.num_entries) {
+		return NT_STATUS_UNSUCCESSFUL;
+	}
+
+	/* send any pending notifications, removing them once sent */
+	for (i=0;i<lck->file.num_pending;i++) {
+		imessaging_send_ptr(odb->ntvfs_ctx->msg_ctx,
+				   lck->file.pending[i].server,
+				   MSG_PVFS_RETRY_OPEN,
+				   lck->file.pending[i].notify_ptr);
+	}
+	lck->file.num_pending = 0;
+
+	return odb_push_record(lck, &lck->file);
+}
+
+/*
+  send oplocks breaks to none to all level2 holders
+*/
+static NTSTATUS odb_tdb_break_oplocks(struct odb_lock *lck)
+{
+	struct odb_context *odb = lck->odb;
+	int i;
+	bool modified = false;
+
+	/* see if anyone has an oplock, which we need to break */
+	for (i=0;i<lck->file.num_entries;i++) {
+		if (lck->file.entries[i].oplock_level == OPLOCK_LEVEL_II) {
+			/*
+			 * there could be multiple level2 oplocks
+			 * and we just send a break to none to all of them
+			 * without waiting for a release
+			 */
+			odb_oplock_break_send(odb->ntvfs_ctx->msg_ctx,
+					      &lck->file.entries[i],
+					      OPLOCK_BREAK_TO_NONE);
+			lck->file.entries[i].oplock_level = OPLOCK_NONE;
+			modified = true;
+		}
+	}
+
+	if (modified) {
+		return odb_push_record(lck, &lck->file);
+	}
+	return NT_STATUS_OK;
+}
+
+/*
+  remove a pending opendb entry
+*/
+static NTSTATUS odb_tdb_remove_pending(struct odb_lock *lck, void *private_data)
+{
+	struct odb_context *odb = lck->odb;
+	int i;
+
+	if (lck->file.path == NULL) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	/* find the entry, and delete it */
+	for (i=0;i<lck->file.num_pending;i++) {
+		if (private_data == lck->file.pending[i].notify_ptr &&
+		    cluster_id_equal(&odb->ntvfs_ctx->server_id, &lck->file.pending[i].server)) {
+			if (i < lck->file.num_pending-1) {
+				memmove(lck->file.pending+i, lck->file.pending+i+1,
+					(lck->file.num_pending - (i+1)) *
+					sizeof(struct opendb_pending));
+			}
+			break;
+		}
+	}
+
+	if (i == lck->file.num_pending) {
+		return NT_STATUS_UNSUCCESSFUL;
+	}
+
+	lck->file.num_pending--;
+	
+	return odb_push_record(lck, &lck->file);
+}
+
+
+/*
+  rename the path in a open file
+*/
+static NTSTATUS odb_tdb_rename(struct odb_lock *lck, const char *path)
+{
+	if (lck->file.path == NULL) {
+		/* not having the record at all is OK */
+		return NT_STATUS_OK;
+	}
+
+	lck->file.path = talloc_strdup(lck, path);
+	NT_STATUS_HAVE_NO_MEMORY(lck->file.path);
+
+	return odb_push_record(lck, &lck->file);
+}
+
+/*
+  get the path of an open file
+*/
+static NTSTATUS odb_tdb_get_path(struct odb_lock *lck, const char **path)
+{
+	*path = NULL;
+
+	/* we don't ignore NT_STATUS_OBJECT_NAME_NOT_FOUND here */
+	if (lck->file.path == NULL) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	*path = lck->file.path;
+
+	return NT_STATUS_OK;
+}
+
+/*
+  update delete on close flag on an open file
+*/
+static NTSTATUS odb_tdb_set_delete_on_close(struct odb_lock *lck, bool del_on_close)
+{
+	if (lck->file.path == NULL) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	lck->file.delete_on_close = del_on_close;
+
+	return odb_push_record(lck, &lck->file);
+}
+
+/*
+  update the write time on an open file
+*/
+static NTSTATUS odb_tdb_set_write_time(struct odb_lock *lck,
+				       NTTIME write_time, bool force)
+{
+	if (lck->file.path == NULL) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	if (lck->file.changed_write_time != 0 && !force) {
+		return NT_STATUS_OK;
+	}
+
+	lck->file.changed_write_time = write_time;
+
+	return odb_push_record(lck, &lck->file);
+}
+
+/*
+  return the current value of the delete_on_close bit, and how many
+  people still have the file open
+*/
+static NTSTATUS odb_tdb_get_file_infos(struct odb_context *odb, DATA_BLOB *key,
+				       bool *del_on_close, NTTIME *write_time)
+{
+	struct odb_lock *lck;
+
+	if (del_on_close) {
+		*del_on_close = false;
+	}
+	if (write_time) {
+		*write_time = 0;
+	}
+
+	lck = odb_lock(odb, odb, key);
+	NT_STATUS_HAVE_NO_MEMORY(lck);
+
+	if (del_on_close) {
+		*del_on_close = lck->file.delete_on_close;
+	}
+	if (write_time) {
+		if (lck->file.changed_write_time == 0) {
+			*write_time = lck->file.open_write_time;
+		} else {
+			*write_time = lck->file.changed_write_time;
+		}
+	}
+
+	talloc_free(lck);
+
+	return NT_STATUS_OK;
+}
+
+
+/*
+  determine if a file can be opened with the given share_access,
+  create_options and access_mask
+*/
+static NTSTATUS odb_tdb_can_open(struct odb_lock *lck,
+				 uint32_t stream_id, uint32_t share_access,
+				 uint32_t access_mask, bool delete_on_close,
+				 uint32_t open_disposition, bool break_to_none)
+{
+	struct odb_context *odb = lck->odb;
+	NTSTATUS status;
+
+	status = odb_tdb_open_can_internal(odb, &lck->file, stream_id,
+					   share_access, access_mask,
+					   delete_on_close, open_disposition,
+					   break_to_none, &lck->can_open.attrs_only);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	lck->can_open.e	= talloc(lck, struct opendb_entry);
+	NT_STATUS_HAVE_NO_MEMORY(lck->can_open.e);
+
+	lck->can_open.e->server			= odb->ntvfs_ctx->server_id;
+	lck->can_open.e->file_handle		= NULL;
+	lck->can_open.e->fd			= NULL;
+	lck->can_open.e->stream_id		= stream_id;
+	lck->can_open.e->share_access		= share_access;
+	lck->can_open.e->access_mask		= access_mask;
+	lck->can_open.e->delete_on_close	= delete_on_close;
+	lck->can_open.e->allow_level_II_oplock	= false;
+	lck->can_open.e->oplock_level		= OPLOCK_NONE;
+
+	return NT_STATUS_OK;
+}
+
+
+static const struct opendb_ops opendb_tdb_ops = {
+	.odb_init                = odb_tdb_init,
+	.odb_lock                = odb_tdb_lock,
+	.odb_get_key             = odb_tdb_get_key,
+	.odb_open_file           = odb_tdb_open_file,
+	.odb_open_file_pending   = odb_tdb_open_file_pending,
+	.odb_close_file          = odb_tdb_close_file,
+	.odb_remove_pending      = odb_tdb_remove_pending,
+	.odb_rename              = odb_tdb_rename,
+	.odb_get_path            = odb_tdb_get_path,
+	.odb_set_delete_on_close = odb_tdb_set_delete_on_close,
+	.odb_set_write_time      = odb_tdb_set_write_time,
+	.odb_get_file_infos      = odb_tdb_get_file_infos,
+	.odb_can_open            = odb_tdb_can_open,
+	.odb_update_oplock       = odb_tdb_update_oplock,
+	.odb_break_oplocks       = odb_tdb_break_oplocks
+};
+
+
+void odb_tdb_init_ops(void)
+{
+	sys_lease_init();
+	odb_set_ops(&opendb_tdb_ops);
+}
diff --git a/source4/ntvfs/common/wscript_build b/source4/ntvfs/common/wscript_build
new file mode 100644
index 0000000..b144472
--- /dev/null
+++ b/source4/ntvfs/common/wscript_build
@@ -0,0 +1,9 @@
+#!/usr/bin/env python
+
+bld.SAMBA_SUBSYSTEM('ntvfs_common',
+	source='init.c brlock.c brlock_tdb.c opendb.c opendb_tdb.c notify.c',
+	autoproto='proto.h',
+	deps='util_tdb tdb-wrap',
+	public_deps='NDR_OPENDB NDR_NOTIFY sys_notify sys_lease share'
+	)
+
diff --git a/source4/ntvfs/ipc/README b/source4/ntvfs/ipc/README
new file mode 100644
index 0000000..059a714
--- /dev/null
+++ b/source4/ntvfs/ipc/README
@@ -0,0 +1,5 @@
+This is the IPC$ backend for Samba. NTVFS operations that are made on
+IPC$ shares are directed here by default. Most file operations 
+are not supported on IPC$ shares.
+
+
diff --git a/source4/ntvfs/ipc/ipc_rap.c b/source4/ntvfs/ipc/ipc_rap.c
new file mode 100644
index 0000000..9ddde5e
--- /dev/null
+++ b/source4/ntvfs/ipc/ipc_rap.c
@@ -0,0 +1,511 @@
+/* 
+   Unix SMB/CIFS implementation.
+   RAP handlers
+
+   Copyright (C) Volker Lendecke 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "libcli/raw/interfaces.h"
+#include "../librpc/gen_ndr/rap.h"
+#include "events/events.h"
+#include "ntvfs/ipc/proto.h"
+#include "librpc/ndr/libndr.h"
+#include "param/param.h"
+
+#define NDR_RETURN(call) do { \
+	enum ndr_err_code _ndr_err; \
+	_ndr_err = call; \
+	if (!NDR_ERR_CODE_IS_SUCCESS(_ndr_err)) { \
+		return ndr_map_error2ntstatus(_ndr_err); \
+	} \
+} while (0)
+
+#define RAP_GOTO(call) do { \
+	result = call; \
+	if (NT_STATUS_EQUAL(result, NT_STATUS_BUFFER_TOO_SMALL)) {\
+		goto buffer_overflow; \
+	} \
+	if (!NT_STATUS_IS_OK(result)) { \
+		goto done; \
+	} \
+} while (0)
+
+#define NDR_GOTO(call) do { \
+	enum ndr_err_code _ndr_err; \
+	_ndr_err = call; \
+	if (!NDR_ERR_CODE_IS_SUCCESS(_ndr_err)) { \
+		RAP_GOTO(ndr_map_error2ntstatus(_ndr_err)); \
+	} \
+} while (0)
+
+
+#define NERR_notsupported 50
+
+struct rap_string_heap {
+	TALLOC_CTX *mem_ctx;
+	int offset;
+	int num_strings;
+	const char **strings;
+};
+
+struct rap_heap_save {
+	int offset, num_strings;
+};
+
+static void rap_heap_save(struct rap_string_heap *heap,
+			  struct rap_heap_save *save)
+{
+	save->offset = heap->offset;
+	save->num_strings = heap->num_strings;
+}
+
+static void rap_heap_restore(struct rap_string_heap *heap,
+			     struct rap_heap_save *save)
+{
+	heap->offset = save->offset;
+	heap->num_strings = save->num_strings;
+}
+
+struct rap_call {
+	struct loadparm_context *lp_ctx;
+
+	TALLOC_CTX *mem_ctx;
+	uint16_t callno;
+	const char *paramdesc;
+	const char *datadesc;
+
+	uint16_t status;
+	uint16_t convert;
+
+	uint16_t rcv_paramlen, rcv_datalen;
+
+	struct ndr_push *ndr_push_param;
+	struct ndr_push *ndr_push_data;
+	struct rap_string_heap *heap;
+
+	struct ndr_pull *ndr_pull_param;
+	struct ndr_pull *ndr_pull_data;
+
+	struct tevent_context *event_ctx;
+};
+
+#define RAPNDR_FLAGS (LIBNDR_FLAG_NOALIGN|LIBNDR_FLAG_STR_ASCII|LIBNDR_FLAG_STR_NULLTERM);
+
+static struct rap_call *new_rap_srv_call(TALLOC_CTX *mem_ctx,
+					 struct tevent_context *ev_ctx,
+					 struct loadparm_context *lp_ctx,
+					 struct smb_trans2 *trans)
+{
+	struct rap_call *call;
+
+	call = talloc(mem_ctx, struct rap_call);
+
+	if (call == NULL)
+		return NULL;
+
+	ZERO_STRUCTP(call);
+
+	call->lp_ctx = talloc_reference(call, lp_ctx);
+	call->event_ctx = ev_ctx;
+
+	call->mem_ctx = mem_ctx;
+
+	call->ndr_pull_param = ndr_pull_init_blob(&trans->in.params, mem_ctx);
+	call->ndr_pull_param->flags = RAPNDR_FLAGS;
+
+	call->ndr_pull_data = ndr_pull_init_blob(&trans->in.data, mem_ctx);
+	call->ndr_pull_data->flags = RAPNDR_FLAGS;
+
+	call->heap = talloc(mem_ctx, struct rap_string_heap);
+
+	if (call->heap == NULL)
+		return NULL;
+
+	ZERO_STRUCTP(call->heap);
+
+	call->heap->mem_ctx = mem_ctx;
+
+	return call;
+}
+
+static NTSTATUS rap_srv_pull_word(struct rap_call *call, uint16_t *result)
+{
+	enum ndr_err_code ndr_err;
+
+	if (*call->paramdesc++ != 'W')
+		return NT_STATUS_INVALID_PARAMETER;
+
+	ndr_err = ndr_pull_uint16(call->ndr_pull_param, NDR_SCALARS, result);
+	if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+		return ndr_map_error2ntstatus(ndr_err);
+	}
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS rap_srv_pull_dword(struct rap_call *call, uint32_t *result)
+{
+	enum ndr_err_code ndr_err;
+
+	if (*call->paramdesc++ != 'D')
+		return NT_STATUS_INVALID_PARAMETER;
+
+	ndr_err = ndr_pull_uint32(call->ndr_pull_param, NDR_SCALARS, result);
+	if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+		return ndr_map_error2ntstatus(ndr_err);
+	}
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS rap_srv_pull_string(struct rap_call *call, const char **result)
+{
+	enum ndr_err_code ndr_err;
+	char paramdesc = *call->paramdesc++;
+
+	if (paramdesc == 'O') {
+		*result = NULL;
+		return NT_STATUS_OK;
+	}
+
+	if (paramdesc != 'z')
+		return NT_STATUS_INVALID_PARAMETER;
+
+	ndr_err = ndr_pull_string(call->ndr_pull_param, NDR_SCALARS, result);
+	if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+		return ndr_map_error2ntstatus(ndr_err);
+	}
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS rap_srv_pull_bufsize(struct rap_call *call, uint16_t *bufsize)
+{
+	enum ndr_err_code ndr_err;
+
+	if ( (*call->paramdesc++ != 'r') || (*call->paramdesc++ != 'L') )
+		return NT_STATUS_INVALID_PARAMETER;
+
+	ndr_err = ndr_pull_uint16(call->ndr_pull_param, NDR_SCALARS, bufsize);
+	if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+		return ndr_map_error2ntstatus(ndr_err);
+	}
+
+	call->heap->offset = *bufsize;
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS rap_srv_pull_expect_multiple(struct rap_call *call)
+{
+	if ( (*call->paramdesc++ != 'e') || (*call->paramdesc++ != 'h') )
+		return NT_STATUS_INVALID_PARAMETER;
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS rap_push_string(struct ndr_push *data_push,
+				struct rap_string_heap *heap,
+				const char *str)
+{
+	size_t space;
+
+	if (str == NULL)
+		str = "";
+
+	space = strlen(str)+1;
+
+	if (heap->offset < space)
+		return NT_STATUS_BUFFER_TOO_SMALL;
+
+	heap->offset -= space;
+
+	NDR_RETURN(ndr_push_uint16(data_push, NDR_SCALARS, heap->offset));
+	NDR_RETURN(ndr_push_uint16(data_push, NDR_SCALARS, 0));
+
+	heap->strings = talloc_realloc(heap->mem_ctx,
+					 heap->strings,
+					 const char *,
+					 heap->num_strings + 1);
+
+	if (heap->strings == NULL)
+		return NT_STATUS_NO_MEMORY;
+
+	heap->strings[heap->num_strings] = str;
+	heap->num_strings += 1;
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS _rap_netshareenum(struct rap_call *call)
+{
+	struct rap_NetShareEnum r;
+	NTSTATUS result;
+	uint32_t offset_save = 0;
+	struct rap_heap_save heap_save = {0};
+
+	RAP_GOTO(rap_srv_pull_word(call, &r.in.level));
+	RAP_GOTO(rap_srv_pull_bufsize(call, &r.in.bufsize));
+	RAP_GOTO(rap_srv_pull_expect_multiple(call));
+
+	switch(r.in.level) {
+	case 0:
+		if (strcmp(call->datadesc, "B13") != 0)
+			return NT_STATUS_INVALID_PARAMETER;
+		break;
+	case 1:
+		if (strcmp(call->datadesc, "B13BWz") != 0)
+			return NT_STATUS_INVALID_PARAMETER;
+		break;
+	default:
+		return NT_STATUS_INVALID_PARAMETER;
+		break;
+	}
+
+	result = rap_netshareenum(call, call->event_ctx, call->lp_ctx, &r);
+
+	if (!NT_STATUS_IS_OK(result))
+		return result;
+
+	for (r.out.count = 0; r.out.count < r.out.available; r.out.count++) {
+
+		int i = r.out.count;
+
+		offset_save = call->ndr_push_data->offset;
+		rap_heap_save(call->heap, &heap_save);
+
+		switch(r.in.level) {
+		case 0:
+			NDR_GOTO(ndr_push_bytes(call->ndr_push_data,
+					      (const uint8_t *)r.out.info[i].info0.share_name,
+					      sizeof(r.out.info[i].info0.share_name)));
+			break;
+		case 1:
+			NDR_GOTO(ndr_push_bytes(call->ndr_push_data,
+					      (const uint8_t *)r.out.info[i].info1.share_name,
+					      sizeof(r.out.info[i].info1.share_name)));
+			NDR_GOTO(ndr_push_uint8(call->ndr_push_data,
+					      NDR_SCALARS, r.out.info[i].info1.reserved1));
+			NDR_GOTO(ndr_push_uint16(call->ndr_push_data,
+					       NDR_SCALARS, r.out.info[i].info1.share_type));
+
+			RAP_GOTO(rap_push_string(call->ndr_push_data,
+					       call->heap,
+					       r.out.info[i].info1.comment));
+
+			break;
+		}
+
+		if (call->ndr_push_data->offset > call->heap->offset) {
+
+	buffer_overflow:
+
+			call->ndr_push_data->offset = offset_save;
+			rap_heap_restore(call->heap, &heap_save);
+			break;
+		}
+	}
+
+	call->status = r.out.status;
+
+	NDR_RETURN(ndr_push_uint16(call->ndr_push_param, NDR_SCALARS, r.out.count));
+	NDR_RETURN(ndr_push_uint16(call->ndr_push_param, NDR_SCALARS, r.out.available));
+
+	result = NT_STATUS_OK;
+
+ done:
+	return result;
+}
+
+static NTSTATUS _rap_netserverenum2(struct rap_call *call)
+{
+	struct rap_NetServerEnum2 r;
+	NTSTATUS result;
+	uint32_t offset_save = 0;
+	struct rap_heap_save heap_save = {0};
+
+	RAP_GOTO(rap_srv_pull_word(call, &r.in.level));
+	RAP_GOTO(rap_srv_pull_bufsize(call, &r.in.bufsize));
+	RAP_GOTO(rap_srv_pull_expect_multiple(call));
+	RAP_GOTO(rap_srv_pull_dword(call, &r.in.servertype));
+	RAP_GOTO(rap_srv_pull_string(call, &r.in.domain));
+
+	switch(r.in.level) {
+	case 0:
+		if (strcmp(call->datadesc, "B16") != 0)
+			return NT_STATUS_INVALID_PARAMETER;
+		break;
+	case 1:
+		if (strcmp(call->datadesc, "B16BBDz") != 0)
+			return NT_STATUS_INVALID_PARAMETER;
+		break;
+	default:
+		return NT_STATUS_INVALID_PARAMETER;
+		break;
+	}
+
+	result = rap_netserverenum2(call, call->lp_ctx, &r);
+
+	if (!NT_STATUS_IS_OK(result))
+		return result;
+
+	for (r.out.count = 0; r.out.count < r.out.available; r.out.count++) {
+
+		int i = r.out.count;
+
+		offset_save = call->ndr_push_data->offset;
+		rap_heap_save(call->heap, &heap_save);
+
+		switch(r.in.level) {
+		case 0:
+			NDR_GOTO(ndr_push_bytes(call->ndr_push_data,
+					      (const uint8_t *)r.out.info[i].info0.name,
+					      sizeof(r.out.info[i].info0.name)));
+			break;
+		case 1:
+			NDR_GOTO(ndr_push_bytes(call->ndr_push_data,
+					      (const uint8_t *)r.out.info[i].info1.name,
+					      sizeof(r.out.info[i].info1.name)));
+			NDR_GOTO(ndr_push_uint8(call->ndr_push_data,
+					      NDR_SCALARS, r.out.info[i].info1.version_major));
+			NDR_GOTO(ndr_push_uint8(call->ndr_push_data,
+					      NDR_SCALARS, r.out.info[i].info1.version_minor));
+			NDR_GOTO(ndr_push_uint32(call->ndr_push_data,
+					       NDR_SCALARS, r.out.info[i].info1.servertype));
+
+			RAP_GOTO(rap_push_string(call->ndr_push_data,
+					       call->heap,
+					       r.out.info[i].info1.comment));
+
+			break;
+		}
+
+		if (call->ndr_push_data->offset > call->heap->offset) {
+
+	buffer_overflow:
+
+			call->ndr_push_data->offset = offset_save;
+			rap_heap_restore(call->heap, &heap_save);
+			break;
+		}
+	}
+
+	call->status = r.out.status;
+
+	NDR_RETURN(ndr_push_uint16(call->ndr_push_param, NDR_SCALARS, r.out.count));
+	NDR_RETURN(ndr_push_uint16(call->ndr_push_param, NDR_SCALARS, r.out.available));
+
+	result = NT_STATUS_OK;
+
+ done:
+	return result;
+}
+
+static NTSTATUS api_Unsupported(struct rap_call *call)
+{
+	call->status = NERR_notsupported;
+	call->convert = 0;
+	return NT_STATUS_OK;
+}
+
+static const struct
+{
+	const char *name;
+	int id;
+	NTSTATUS (*fn)(struct rap_call *call);
+} api_commands[] = {
+	{"NetShareEnum", RAP_WshareEnum, _rap_netshareenum },
+	{"NetServerEnum2", RAP_NetServerEnum2, _rap_netserverenum2 },
+	{NULL, -1, api_Unsupported}
+};
+
+NTSTATUS ipc_rap_call(TALLOC_CTX *mem_ctx, struct tevent_context *event_ctx, struct loadparm_context *lp_ctx,
+		      struct smb_trans2 *trans)
+{
+	int i;
+	NTSTATUS result;
+	struct rap_call *call;
+	DATA_BLOB result_param, result_data;
+	struct ndr_push *final_param;
+	struct ndr_push *final_data;
+
+	call = new_rap_srv_call(mem_ctx, event_ctx, lp_ctx, trans);
+
+	if (call == NULL)
+		return NT_STATUS_NO_MEMORY;
+
+	NDR_RETURN(ndr_pull_uint16(call->ndr_pull_param, NDR_SCALARS, &call->callno));
+	NDR_RETURN(ndr_pull_string(call->ndr_pull_param, NDR_SCALARS,
+				  &call->paramdesc));
+	NDR_RETURN(ndr_pull_string(call->ndr_pull_param, NDR_SCALARS,
+				  &call->datadesc));
+
+	call->ndr_push_param = ndr_push_init_ctx(call);
+	call->ndr_push_data = ndr_push_init_ctx(call);
+
+	if ((call->ndr_push_param == NULL) || (call->ndr_push_data == NULL))
+		return NT_STATUS_NO_MEMORY;
+
+	call->ndr_push_param->flags = RAPNDR_FLAGS;
+	call->ndr_push_data->flags = RAPNDR_FLAGS;
+
+	result = NT_STATUS_INVALID_SYSTEM_SERVICE;
+
+	for (i=0; api_commands[i].name != NULL; i++) {
+		if (api_commands[i].id == call->callno) {
+			DEBUG(5, ("Running RAP call %s\n",
+				  api_commands[i].name));
+			result = api_commands[i].fn(call);
+			break;
+		}
+	}
+
+	if (!NT_STATUS_IS_OK(result))
+		return result;
+
+	result_param = ndr_push_blob(call->ndr_push_param);
+	result_data = ndr_push_blob(call->ndr_push_data);
+
+	final_param = ndr_push_init_ctx(call);
+	final_data = ndr_push_init_ctx(call);
+
+	if ((final_param == NULL) || (final_data == NULL))
+		return NT_STATUS_NO_MEMORY;
+
+	final_param->flags = RAPNDR_FLAGS;
+	final_data->flags = RAPNDR_FLAGS;
+
+	NDR_RETURN(ndr_push_uint16(final_param, NDR_SCALARS, call->status));
+	NDR_RETURN(ndr_push_uint16(final_param,
+				  NDR_SCALARS, call->heap->offset - result_data.length));
+	NDR_RETURN(ndr_push_bytes(final_param, result_param.data,
+				 result_param.length));
+
+	NDR_RETURN(ndr_push_bytes(final_data, result_data.data,
+				 result_data.length));
+
+	for (i=call->heap->num_strings-1; i>=0; i--)
+		NDR_RETURN(ndr_push_string(final_data, NDR_SCALARS,
+					  call->heap->strings[i]));
+
+	trans->out.setup_count = 0;
+	trans->out.setup = NULL;
+	trans->out.params = ndr_push_blob(final_param);
+	trans->out.data = ndr_push_blob(final_data);
+
+	return result;
+}
diff --git a/source4/ntvfs/ipc/rap_server.c b/source4/ntvfs/ipc/rap_server.c
new file mode 100644
index 0000000..4c4beca
--- /dev/null
+++ b/source4/ntvfs/ipc/rap_server.c
@@ -0,0 +1,95 @@
+/* 
+   Unix SMB/CIFS implementation.
+   RAP handlers
+
+   Copyright (C) Volker Lendecke 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "param/share.h"
+#include "../librpc/gen_ndr/rap.h"
+#include "libcli/raw/interfaces.h"
+#include "librpc/gen_ndr/srvsvc.h"
+#include "librpc/gen_ndr/dcerpc.h"
+#include "rpc_server/common/common.h"
+#include "rpc_server/common/share.h"
+#include "param/param.h"
+#include "ntvfs/ipc/proto.h"
+
+/* At this moment these are just dummy functions, but you might get the
+ * idea. */
+
+NTSTATUS rap_netshareenum(TALLOC_CTX *mem_ctx,
+			  struct tevent_context *event_ctx,
+			  struct loadparm_context *lp_ctx,
+			  struct rap_NetShareEnum *r)
+{
+	NTSTATUS nterr;
+	const char **snames;
+	struct share_context *sctx;
+	struct share_config *scfg;
+	int i, j, count;
+
+	r->out.status = 0;
+	r->out.available = 0;
+	r->out.info = NULL;
+
+	nterr = share_get_context(mem_ctx, lp_ctx, &sctx);
+	if (!NT_STATUS_IS_OK(nterr)) {
+		return nterr;
+	}
+
+	nterr = share_list_all(mem_ctx, sctx, &count, &snames);
+	if (!NT_STATUS_IS_OK(nterr)) {
+		return nterr;
+	}
+
+	r->out.available = count;
+	r->out.info = talloc_array(mem_ctx,
+				   union rap_share_info, r->out.available);
+
+	for (i = 0, j = 0; i < r->out.available; i++) {
+		size_t sname_len;
+
+		if (!NT_STATUS_IS_OK(share_get_config(mem_ctx, sctx, snames[i], &scfg))) {
+			DEBUG(3, ("WARNING: Service [%s] disappeared after enumeration!\n", snames[i]));
+			continue;
+		}
+		/* Make sure we have NUL-termination */
+		sname_len = MIN(strlen(snames[i]),
+				sizeof(r->out.info[j].info1.share_name));
+		strlcpy((char *)r->out.info[j].info1.share_name,
+			snames[i],
+			sname_len);
+		r->out.info[i].info1.reserved1 = 0;
+		r->out.info[i].info1.share_type = dcesrv_common_get_share_type(mem_ctx, NULL, scfg);
+		r->out.info[i].info1.comment = share_string_option(mem_ctx, scfg, SHARE_COMMENT, "");
+		talloc_free(scfg);
+		j++;
+	}
+	r->out.available = j;
+	
+	return NT_STATUS_OK;
+}
+
+NTSTATUS rap_netserverenum2(TALLOC_CTX *mem_ctx,
+			    struct loadparm_context *lp_ctx,
+			    struct rap_NetServerEnum2 *r)
+{
+	r->out.status = 0;
+	r->out.available = 0;
+	return NT_STATUS_OK;
+}
diff --git a/source4/ntvfs/ipc/vfs_ipc.c b/source4/ntvfs/ipc/vfs_ipc.c
new file mode 100644
index 0000000..01e2a5d
--- /dev/null
+++ b/source4/ntvfs/ipc/vfs_ipc.c
@@ -0,0 +1,1356 @@
+/* 
+   Unix SMB/CIFS implementation.
+   default IPC$ NTVFS backend
+
+   Copyright (C) Andrew Tridgell 2003
+   Copyright (C) Stefan (metze) Metzmacher 2004-2005
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/*
+  this implements the IPC$ backend, called by the NTVFS subsystem to
+  handle requests on IPC$ shares
+*/
+
+
+#include "includes.h"
+#include "../lib/util/dlinklist.h"
+#include "ntvfs/ntvfs.h"
+#include "../librpc/gen_ndr/rap.h"
+#include "ntvfs/ipc/proto.h"
+#include "../libcli/smb/smb_constants.h"
+#include "param/param.h"
+#include "../lib/tsocket/tsocket.h"
+#include "../libcli/named_pipe_auth/npa_tstream.h"
+#include "auth/auth.h"
+#include "auth/auth_sam_reply.h"
+#include "lib/socket/socket.h"
+#include "auth/credentials/credentials.h"
+#include "auth/credentials/credentials_krb5.h"
+#include "system/kerberos.h"
+#include "system/gssapi.h"
+#include "system/locale.h"
+#include "system/filesys.h"
+
+#undef strncasecmp
+
+/* this is the private structure used to keep the state of an open
+   ipc$ connection. It needs to keep information about all open
+   pipes */
+struct ipc_private {
+	struct ntvfs_module_context *ntvfs;
+
+	/* a list of open pipes */
+	struct pipe_state {
+		struct pipe_state *next, *prev;
+		struct ipc_private *ipriv;
+		const char *pipe_name;
+		struct ntvfs_handle *handle;
+		struct tstream_context *npipe;
+		uint16_t file_type;
+		uint16_t device_state;
+		uint64_t allocation_size;
+		struct tevent_queue *write_queue;
+		struct tevent_queue *read_queue;
+	} *pipe_list;
+};
+
+
+/*
+  find a open pipe give a file handle
+*/
+static struct pipe_state *pipe_state_find(struct ipc_private *ipriv, struct ntvfs_handle *handle)
+{
+	struct pipe_state *s;
+	void *p;
+
+	p = ntvfs_handle_get_backend_data(handle, ipriv->ntvfs);
+	if (!p) return NULL;
+
+	s = talloc_get_type(p, struct pipe_state);
+	if (!s) return NULL;
+
+	return s;
+}
+
+/*
+  find a open pipe give a wire fnum
+*/
+static struct pipe_state *pipe_state_find_key(struct ipc_private *ipriv, struct ntvfs_request *req, const DATA_BLOB *key)
+{
+	struct ntvfs_handle *h;
+
+	h = ntvfs_handle_search_by_wire_key(ipriv->ntvfs, req, key);
+	if (!h) return NULL;
+
+	return pipe_state_find(ipriv, h);
+}
+
+
+/*
+  connect to a share - always works 
+*/
+static NTSTATUS ipc_connect(struct ntvfs_module_context *ntvfs,
+			    struct ntvfs_request *req,
+			    union smb_tcon* tcon)
+{
+	struct ipc_private *ipriv;
+	const char *sharename;
+
+	switch (tcon->generic.level) {
+	case RAW_TCON_TCON:
+		sharename = tcon->tcon.in.service;
+		break;
+	case RAW_TCON_TCONX:
+		sharename = tcon->tconx.in.path;
+		break;
+	case RAW_TCON_SMB2:
+		sharename = tcon->smb2.in.path;
+		break;
+	default:
+		return NT_STATUS_INVALID_LEVEL;
+	}
+
+	if (strncmp(sharename, "\\\\", 2) == 0) {
+		char *p = strchr(sharename+2, '\\');
+		if (p) {
+			sharename = p + 1;
+		}
+	}
+
+	ntvfs->ctx->fs_type = talloc_strdup(ntvfs->ctx, "IPC");
+	NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->fs_type);
+
+	ntvfs->ctx->dev_type = talloc_strdup(ntvfs->ctx, "IPC");
+	NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->dev_type);
+
+	if (tcon->generic.level == RAW_TCON_TCONX) {
+		tcon->tconx.out.fs_type = ntvfs->ctx->fs_type;
+		tcon->tconx.out.dev_type = ntvfs->ctx->dev_type;
+	}
+
+	/* prepare the private state for this connection */
+	ipriv = talloc(ntvfs, struct ipc_private);
+	NT_STATUS_HAVE_NO_MEMORY(ipriv);
+
+	ntvfs->private_data = ipriv;
+
+	ipriv->ntvfs = ntvfs;
+	ipriv->pipe_list = NULL;
+
+	return NT_STATUS_OK;
+}
+
+/*
+  disconnect from a share
+*/
+static NTSTATUS ipc_disconnect(struct ntvfs_module_context *ntvfs)
+{
+	return NT_STATUS_OK;
+}
+
+/*
+  delete a file
+*/
+static NTSTATUS ipc_unlink(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req,
+			   union smb_unlink *unl)
+{
+	return NT_STATUS_ACCESS_DENIED;
+}
+
+/*
+  check if a directory exists
+*/
+static NTSTATUS ipc_chkpath(struct ntvfs_module_context *ntvfs,
+			    struct ntvfs_request *req,
+			    union smb_chkpath *cp)
+{
+	return NT_STATUS_ACCESS_DENIED;
+}
+
+/*
+  return info on a pathname
+*/
+static NTSTATUS ipc_qpathinfo(struct ntvfs_module_context *ntvfs,
+			      struct ntvfs_request *req, union smb_fileinfo *info)
+{
+	switch (info->generic.level) {
+	case  RAW_FILEINFO_GENERIC:
+		return NT_STATUS_INVALID_DEVICE_REQUEST;
+	case RAW_FILEINFO_GETATTR:
+		return NT_STATUS_ACCESS_DENIED;
+	default:
+		return ntvfs_map_qpathinfo(ntvfs, req, info);
+	}
+}
+
+/*
+  set info on a pathname
+*/
+static NTSTATUS ipc_setpathinfo(struct ntvfs_module_context *ntvfs,
+				struct ntvfs_request *req, union smb_setfileinfo *st)
+{
+	return NT_STATUS_ACCESS_DENIED;
+}
+
+
+/*
+  destroy a open pipe structure
+*/
+static int ipc_fd_destructor(struct pipe_state *p)
+{
+	DLIST_REMOVE(p->ipriv->pipe_list, p);
+	ntvfs_handle_remove_backend_data(p->handle, p->ipriv->ntvfs);
+	return 0;
+}
+
+struct ipc_open_state {
+	struct ipc_private *ipriv;
+	struct pipe_state *p;
+	struct ntvfs_request *req;
+	union smb_open *oi;
+	struct auth_session_info_transport *session_info_transport;
+};
+
+static void ipc_open_done(struct tevent_req *subreq);
+
+/*
+  check the pipename is valid
+ */
+static NTSTATUS validate_pipename(const char *name)
+{
+	while (*name) {
+		if (!isalnum(*name) && *name != '_') {
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+		name++;
+	}
+	return NT_STATUS_OK;
+}
+
+/*
+  open a file - used for MSRPC pipes
+*/
+static NTSTATUS ipc_open(struct ntvfs_module_context *ntvfs,
+			 struct ntvfs_request *req, union smb_open *oi)
+{
+	NTSTATUS status;
+	struct pipe_state *p;
+	struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
+				    struct ipc_private);
+	struct ntvfs_handle *h;
+	struct ipc_open_state *state;
+	struct tevent_req *subreq;
+	const char *fname;
+	const char *directory;
+	const struct tsocket_address *remote_client_addr;
+	const struct tsocket_address *local_server_addr;
+
+	switch (oi->generic.level) {
+	case RAW_OPEN_NTCREATEX:
+	case RAW_OPEN_NTTRANS_CREATE:
+		fname = oi->ntcreatex.in.fname;
+		while (fname[0] == '\\') fname++;
+		break;
+	case RAW_OPEN_OPENX:
+		fname = oi->openx.in.fname;
+		while (fname[0] == '\\') fname++;
+		if (strncasecmp(fname, "PIPE\\", 5) != 0) {
+			return NT_STATUS_OBJECT_PATH_SYNTAX_BAD;
+		}
+		while (fname[0] == '\\') fname++;
+		break;
+	case RAW_OPEN_SMB2:
+		fname = oi->smb2.in.fname;
+		break;
+	default:
+		return NT_STATUS_NOT_SUPPORTED;
+	}
+
+	directory = talloc_asprintf(req, "%s/np",
+				    lpcfg_ncalrpc_dir(ipriv->ntvfs->ctx->lp_ctx));
+	NT_STATUS_HAVE_NO_MEMORY(directory);
+
+	state = talloc(req, struct ipc_open_state);
+	NT_STATUS_HAVE_NO_MEMORY(state);
+
+	status = ntvfs_handle_new(ntvfs, req, &h);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	p = talloc(h, struct pipe_state);
+	NT_STATUS_HAVE_NO_MEMORY(p);
+
+	/* check for valid characters in name */
+	fname = strlower_talloc(p, fname);
+
+	status = validate_pipename(fname);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	p->pipe_name = talloc_asprintf(p, "\\pipe\\%s", fname);
+	NT_STATUS_HAVE_NO_MEMORY(p->pipe_name);
+
+	p->handle = h;
+	p->ipriv = ipriv;
+
+	p->write_queue = tevent_queue_create(p, "ipc_write_queue");
+	NT_STATUS_HAVE_NO_MEMORY(p->write_queue);
+
+	p->read_queue = tevent_queue_create(p, "ipc_read_queue");
+	NT_STATUS_HAVE_NO_MEMORY(p->read_queue);
+
+	state->ipriv = ipriv;
+	state->p = p;
+	state->req = req;
+	state->oi = oi;
+
+	status = auth_session_info_transport_from_session(state,
+							  req->session_info,
+							  ipriv->ntvfs->ctx->event_ctx,
+							  ipriv->ntvfs->ctx->lp_ctx,
+							  &state->session_info_transport);
+
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	local_server_addr = ntvfs_get_local_address(ipriv->ntvfs);
+	remote_client_addr = ntvfs_get_remote_address(ipriv->ntvfs);
+
+	subreq = tstream_npa_connect_send(p,
+					  ipriv->ntvfs->ctx->event_ctx,
+					  directory,
+					  fname,
+					  NCACN_NP,
+					  remote_client_addr,
+					  NULL,
+					  local_server_addr,
+					  NULL,
+					  state->session_info_transport);
+	NT_STATUS_HAVE_NO_MEMORY(subreq);
+	tevent_req_set_callback(subreq, ipc_open_done, state);
+
+	req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
+	return NT_STATUS_OK;
+}
+
+static void ipc_open_done(struct tevent_req *subreq)
+{
+	struct ipc_open_state *state = tevent_req_callback_data(subreq,
+				       struct ipc_open_state);
+	struct ipc_private *ipriv = state->ipriv;
+	struct pipe_state *p = state->p;
+	struct ntvfs_request *req = state->req;
+	union smb_open *oi = state->oi;
+	int ret;
+	int sys_errno;
+	NTSTATUS status;
+
+	ret = tstream_npa_connect_recv(subreq, &sys_errno,
+				       p, &p->npipe,
+				       &p->file_type,
+				       &p->device_state,
+				       &p->allocation_size);
+	TALLOC_FREE(subreq);
+	if (ret == -1) {
+		status = map_nt_error_from_unix_common(sys_errno);
+		goto reply;
+	}
+
+	DLIST_ADD(ipriv->pipe_list, p);
+	talloc_set_destructor(p, ipc_fd_destructor);
+
+	status = ntvfs_handle_set_backend_data(p->handle, ipriv->ntvfs, p);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto reply;
+	}
+
+	switch (oi->generic.level) {
+	case RAW_OPEN_NTCREATEX:
+		ZERO_STRUCT(oi->ntcreatex.out);
+		oi->ntcreatex.out.file.ntvfs	= p->handle;
+		oi->ntcreatex.out.oplock_level	= 0;
+		oi->ntcreatex.out.create_action	= NTCREATEX_ACTION_EXISTED;
+		oi->ntcreatex.out.create_time	= 0;
+		oi->ntcreatex.out.access_time	= 0;
+		oi->ntcreatex.out.write_time	= 0;
+		oi->ntcreatex.out.change_time	= 0;
+		oi->ntcreatex.out.attrib	= FILE_ATTRIBUTE_NORMAL;
+		oi->ntcreatex.out.alloc_size	= p->allocation_size;
+		oi->ntcreatex.out.size		= 0;
+		oi->ntcreatex.out.file_type	= p->file_type;
+		oi->ntcreatex.out.ipc_state	= p->device_state;
+		oi->ntcreatex.out.is_directory	= 0;
+		break;
+	case RAW_OPEN_OPENX:
+		ZERO_STRUCT(oi->openx.out);
+		oi->openx.out.file.ntvfs	= p->handle;
+		oi->openx.out.attrib		= FILE_ATTRIBUTE_NORMAL;
+		oi->openx.out.write_time	= 0;
+		oi->openx.out.size		= 0;
+		oi->openx.out.access		= 0;
+		oi->openx.out.ftype		= p->file_type;
+		oi->openx.out.devstate		= p->device_state;
+		oi->openx.out.action		= 0;
+		oi->openx.out.unique_fid	= 0;
+		oi->openx.out.access_mask	= 0;
+		oi->openx.out.unknown		= 0;
+		break;
+	case RAW_OPEN_SMB2:
+		ZERO_STRUCT(oi->smb2.out);
+		oi->smb2.out.file.ntvfs		= p->handle;
+		oi->smb2.out.oplock_level	= oi->smb2.in.oplock_level;
+		oi->smb2.out.create_action	= NTCREATEX_ACTION_EXISTED;
+		oi->smb2.out.create_time	= 0;
+		oi->smb2.out.access_time	= 0;
+		oi->smb2.out.write_time		= 0;
+		oi->smb2.out.change_time	= 0;
+		oi->smb2.out.alloc_size		= p->allocation_size;
+		oi->smb2.out.size		= 0;
+		oi->smb2.out.file_attr		= FILE_ATTRIBUTE_NORMAL;
+		oi->smb2.out.reserved2		= 0;
+		break;
+	default:
+		break;
+	}
+
+reply:
+	req->async_states->status = status;
+	req->async_states->send_fn(req);
+}
+
+/*
+  create a directory
+*/
+static NTSTATUS ipc_mkdir(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req, union smb_mkdir *md)
+{
+	return NT_STATUS_ACCESS_DENIED;
+}
+
+/*
+  remove a directory
+*/
+static NTSTATUS ipc_rmdir(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req, struct smb_rmdir *rd)
+{
+	return NT_STATUS_ACCESS_DENIED;
+}
+
+/*
+  rename a set of files
+*/
+static NTSTATUS ipc_rename(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req, union smb_rename *ren)
+{
+	return NT_STATUS_ACCESS_DENIED;
+}
+
+/*
+  copy a set of files
+*/
+static NTSTATUS ipc_copy(struct ntvfs_module_context *ntvfs,
+			 struct ntvfs_request *req, struct smb_copy *cp)
+{
+	return NT_STATUS_ACCESS_DENIED;
+}
+
+struct ipc_readv_next_vector_state {
+	uint8_t *buf;
+	size_t len;
+	off_t ofs;
+	size_t remaining;
+};
+
+static void ipc_readv_next_vector_init(struct ipc_readv_next_vector_state *s,
+				       uint8_t *buf, size_t len)
+{
+	ZERO_STRUCTP(s);
+
+	s->buf = buf;
+	s->len = MIN(len, UINT16_MAX);
+}
+
+static int ipc_readv_next_vector(struct tstream_context *stream,
+				 void *private_data,
+				 TALLOC_CTX *mem_ctx,
+				 struct iovec **_vector,
+				 size_t *count)
+{
+	struct ipc_readv_next_vector_state *state =
+		(struct ipc_readv_next_vector_state *)private_data;
+	struct iovec *vector;
+	ssize_t pending;
+	size_t wanted;
+
+	if (state->ofs == state->len) {
+		*_vector = NULL;
+		*count = 0;
+		return 0;
+	}
+
+	pending = tstream_pending_bytes(stream);
+	if (pending == -1) {
+		return -1;
+	}
+
+	if (pending == 0 && state->ofs != 0) {
+		/* return a short read */
+		*_vector = NULL;
+		*count = 0;
+		return 0;
+	}
+
+	if (pending == 0) {
+		/* we want at least one byte and recheck again */
+		wanted = 1;
+	} else {
+		size_t missing = state->len - state->ofs;
+		if (pending > missing) {
+			/* there's more available */
+			state->remaining = pending - missing;
+			wanted = missing;
+		} else {
+			/* read what we can get and recheck in the next cycle */
+			wanted = pending;
+		}
+	}
+
+	vector = talloc_array(mem_ctx, struct iovec, 1);
+	if (!vector) {
+		return -1;
+	}
+
+	vector[0].iov_base = (char *) (state->buf + state->ofs);
+	vector[0].iov_len = wanted;
+
+	state->ofs += wanted;
+
+	*_vector = vector;
+	*count = 1;
+	return 0;
+}
+
+struct ipc_read_state {
+	struct ipc_private *ipriv;
+	struct pipe_state *p;
+	struct ntvfs_request *req;
+	union smb_read *rd;
+	struct ipc_readv_next_vector_state next_vector;
+};
+
+static void ipc_read_done(struct tevent_req *subreq);
+
+/*
+  read from a file
+*/
+static NTSTATUS ipc_read(struct ntvfs_module_context *ntvfs,
+			 struct ntvfs_request *req, union smb_read *rd)
+{
+	struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
+				    struct ipc_private);
+	struct pipe_state *p;
+	struct ipc_read_state *state;
+	struct tevent_req *subreq;
+
+	if (rd->generic.level != RAW_READ_GENERIC) {
+		return ntvfs_map_read(ntvfs, req, rd);
+	}
+
+	p = pipe_state_find(ipriv, rd->readx.in.file.ntvfs);
+	if (!p) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	state = talloc(req, struct ipc_read_state);
+	NT_STATUS_HAVE_NO_MEMORY(state);
+
+	state->ipriv = ipriv;
+	state->p = p;
+	state->req = req;
+	state->rd = rd;
+
+	/* rd->readx.out.data is already allocated */
+	ipc_readv_next_vector_init(&state->next_vector,
+				   rd->readx.out.data,
+				   rd->readx.in.maxcnt);
+
+	subreq = tstream_readv_pdu_queue_send(req,
+					      ipriv->ntvfs->ctx->event_ctx,
+					      p->npipe,
+					      p->read_queue,
+					      ipc_readv_next_vector,
+					      &state->next_vector);
+	NT_STATUS_HAVE_NO_MEMORY(subreq);
+	tevent_req_set_callback(subreq, ipc_read_done, state);
+
+	req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
+	return NT_STATUS_OK;
+}
+
+static void ipc_read_done(struct tevent_req *subreq)
+{
+	struct ipc_read_state *state =
+		tevent_req_callback_data(subreq,
+		struct ipc_read_state);
+	struct ntvfs_request *req = state->req;
+	union smb_read *rd = state->rd;
+	int ret;
+	int sys_errno;
+	NTSTATUS status;
+
+	ret = tstream_readv_pdu_queue_recv(subreq, &sys_errno);
+	TALLOC_FREE(subreq);
+	if (ret == -1) {
+		status = map_nt_error_from_unix_common(sys_errno);
+		goto reply;
+	}
+
+	status = NT_STATUS_OK;
+	if (state->next_vector.remaining > 0) {
+		status = STATUS_BUFFER_OVERFLOW;
+	}
+
+	rd->readx.out.remaining = state->next_vector.remaining;
+	rd->readx.out.compaction_mode = 0;
+	rd->readx.out.nread = ret;
+
+reply:
+	req->async_states->status = status;
+	req->async_states->send_fn(req);
+}
+
+struct ipc_write_state {
+	struct ipc_private *ipriv;
+	struct pipe_state *p;
+	struct ntvfs_request *req;
+	union smb_write *wr;
+	struct iovec iov;
+};
+
+static void ipc_write_done(struct tevent_req *subreq);
+
+/*
+  write to a file
+*/
+static NTSTATUS ipc_write(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req, union smb_write *wr)
+{
+	struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
+				    struct ipc_private);
+	struct pipe_state *p;
+	struct tevent_req *subreq;
+	struct ipc_write_state *state;
+
+	if (wr->generic.level != RAW_WRITE_GENERIC) {
+		return ntvfs_map_write(ntvfs, req, wr);
+	}
+
+	p = pipe_state_find(ipriv, wr->writex.in.file.ntvfs);
+	if (!p) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	state = talloc(req, struct ipc_write_state);
+	NT_STATUS_HAVE_NO_MEMORY(state);
+
+	state->ipriv = ipriv;
+	state->p = p;
+	state->req = req;
+	state->wr = wr;
+	state->iov.iov_base = discard_const_p(void, wr->writex.in.data);
+	state->iov.iov_len = wr->writex.in.count;
+
+	subreq = tstream_writev_queue_send(state,
+					   ipriv->ntvfs->ctx->event_ctx,
+					   p->npipe,
+					   p->write_queue,
+					   &state->iov, 1);
+	NT_STATUS_HAVE_NO_MEMORY(subreq);
+	tevent_req_set_callback(subreq, ipc_write_done, state);
+
+	req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
+	return NT_STATUS_OK;
+}
+
+static void ipc_write_done(struct tevent_req *subreq)
+{
+	struct ipc_write_state *state =
+		tevent_req_callback_data(subreq,
+		struct ipc_write_state);
+	struct ntvfs_request *req = state->req;
+	union smb_write *wr = state->wr;
+	int ret;
+	int sys_errno;
+	NTSTATUS status;
+
+	ret = tstream_writev_queue_recv(subreq, &sys_errno);
+	TALLOC_FREE(subreq);
+	if (ret == -1) {
+		status = map_nt_error_from_unix_common(sys_errno);
+		goto reply;
+	}
+
+	status = NT_STATUS_OK;
+
+	wr->writex.out.nwritten = ret;
+	wr->writex.out.remaining = 0;
+
+reply:
+	req->async_states->status = status;
+	req->async_states->send_fn(req);
+}
+
+/*
+  seek in a file
+*/
+static NTSTATUS ipc_seek(struct ntvfs_module_context *ntvfs,
+			 struct ntvfs_request *req,
+			 union smb_seek *io)
+{
+	return NT_STATUS_ACCESS_DENIED;
+}
+
+/*
+  flush a file
+*/
+static NTSTATUS ipc_flush(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req,
+			  union smb_flush *io)
+{
+	return NT_STATUS_ACCESS_DENIED;
+}
+
+/*
+  close a file
+*/
+static NTSTATUS ipc_close(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req, union smb_close *io)
+{
+	struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
+				    struct ipc_private);
+	struct pipe_state *p;
+
+	if (io->generic.level != RAW_CLOSE_GENERIC) {
+		return ntvfs_map_close(ntvfs, req, io);
+	}
+
+	ZERO_STRUCT(io->generic.out);
+
+	p = pipe_state_find(ipriv, io->generic.in.file.ntvfs);
+	if (!p) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	talloc_free(p);
+
+	return NT_STATUS_OK;
+}
+
+/*
+  exit - closing files
+*/
+static NTSTATUS ipc_exit(struct ntvfs_module_context *ntvfs,
+			 struct ntvfs_request *req)
+{
+	struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
+				    struct ipc_private);
+	struct pipe_state *p, *next;
+	
+	for (p=ipriv->pipe_list; p; p=next) {
+		next = p->next;
+		if (p->handle->session_info == req->session_info &&
+		    p->handle->smbpid == req->smbpid) {
+			talloc_free(p);
+		}
+	}
+
+	return NT_STATUS_OK;
+}
+
+/*
+  logoff - closing files open by the user
+*/
+static NTSTATUS ipc_logoff(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req)
+{
+	struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
+				    struct ipc_private);
+	struct pipe_state *p, *next;
+	
+	for (p=ipriv->pipe_list; p; p=next) {
+		next = p->next;
+		if (p->handle->session_info == req->session_info) {
+			talloc_free(p);
+		}
+	}
+
+	return NT_STATUS_OK;
+}
+
+/*
+  setup for an async call
+*/
+static NTSTATUS ipc_async_setup(struct ntvfs_module_context *ntvfs,
+				struct ntvfs_request *req,
+				void *private_data)
+{
+	return NT_STATUS_OK;
+}
+
+/*
+  cancel an async call
+*/
+static NTSTATUS ipc_cancel(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req)
+{
+	return NT_STATUS_UNSUCCESSFUL;
+}
+
+/*
+  lock a byte range
+*/
+static NTSTATUS ipc_lock(struct ntvfs_module_context *ntvfs,
+			 struct ntvfs_request *req, union smb_lock *lck)
+{
+	return NT_STATUS_ACCESS_DENIED;
+}
+
+/*
+  set info on a open file
+*/
+static NTSTATUS ipc_setfileinfo(struct ntvfs_module_context *ntvfs,
+				struct ntvfs_request *req, union smb_setfileinfo *info)
+{
+	return NT_STATUS_ACCESS_DENIED;
+}
+
+/*
+  query info on a open file
+*/
+static NTSTATUS ipc_qfileinfo(struct ntvfs_module_context *ntvfs,
+			      struct ntvfs_request *req, union smb_fileinfo *info)
+{
+	struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
+				    struct ipc_private);
+	struct pipe_state *p = pipe_state_find(ipriv, info->generic.in.file.ntvfs);
+	if (!p) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+	switch (info->generic.level) {
+	case RAW_FILEINFO_GENERIC: 
+	{
+		ZERO_STRUCT(info->generic.out);
+		info->generic.out.attrib = FILE_ATTRIBUTE_NORMAL;
+		info->generic.out.fname.s = strrchr(p->pipe_name, '\\');
+		info->generic.out.alloc_size = 4096;
+		info->generic.out.nlink = 1;
+		/* What the heck?  Match Win2k3: IPC$ pipes are delete pending */
+		info->generic.out.delete_pending = 1;
+		return NT_STATUS_OK;
+	}
+	case RAW_FILEINFO_ALT_NAME_INFO:
+	case RAW_FILEINFO_ALT_NAME_INFORMATION:
+	case RAW_FILEINFO_STREAM_INFO:
+	case RAW_FILEINFO_STREAM_INFORMATION:
+	case RAW_FILEINFO_COMPRESSION_INFO:
+	case RAW_FILEINFO_COMPRESSION_INFORMATION:
+	case RAW_FILEINFO_NETWORK_OPEN_INFORMATION:
+	case RAW_FILEINFO_ATTRIBUTE_TAG_INFORMATION:
+		return NT_STATUS_INVALID_PARAMETER;
+	case  RAW_FILEINFO_ALL_EAS:
+		return NT_STATUS_ACCESS_DENIED;
+	default:
+		return ntvfs_map_qfileinfo(ntvfs, req, info);
+	}
+}
+
+
+/*
+  return filesystem info
+*/
+static NTSTATUS ipc_fsinfo(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req, union smb_fsinfo *fs)
+{
+	return NT_STATUS_ACCESS_DENIED;
+}
+
+/*
+  return print queue info
+*/
+static NTSTATUS ipc_lpq(struct ntvfs_module_context *ntvfs,
+			struct ntvfs_request *req, union smb_lpq *lpq)
+{
+	return NT_STATUS_ACCESS_DENIED;
+}
+
+/* 
+   list files in a directory matching a wildcard pattern
+*/
+static NTSTATUS ipc_search_first(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req, union smb_search_first *io,
+			  void *search_private, 
+			  bool (*callback)(void *, const union smb_search_data *))
+{
+	return NT_STATUS_ACCESS_DENIED;
+}
+
+/* 
+   continue listing files in a directory 
+*/
+static NTSTATUS ipc_search_next(struct ntvfs_module_context *ntvfs,
+			 struct ntvfs_request *req, union smb_search_next *io,
+			 void *search_private, 
+			 bool (*callback)(void *, const union smb_search_data *))
+{
+	return NT_STATUS_ACCESS_DENIED;
+}
+
+/* 
+   end listing files in a directory 
+*/
+static NTSTATUS ipc_search_close(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req, union smb_search_close *io)
+{
+	return NT_STATUS_ACCESS_DENIED;
+}
+
+struct ipc_trans_state {
+	struct ipc_private *ipriv;
+	struct pipe_state *p;
+	struct ntvfs_request *req;
+	struct smb_trans2 *trans;
+	struct iovec writev_iov;
+	struct ipc_readv_next_vector_state next_vector;
+};
+
+static void ipc_trans_writev_done(struct tevent_req *subreq);
+static void ipc_trans_readv_done(struct tevent_req *subreq);
+
+/* SMBtrans - handle a DCERPC command */
+static NTSTATUS ipc_dcerpc_cmd(struct ntvfs_module_context *ntvfs,
+			       struct ntvfs_request *req, struct smb_trans2 *trans)
+{
+	struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
+				    struct ipc_private);
+	struct pipe_state *p;
+	DATA_BLOB fnum_key;
+	uint16_t fnum;
+	struct ipc_trans_state *state;
+	struct tevent_req *subreq;
+
+	/*
+	 * the fnum is in setup[1], a 16 bit value
+	 * the setup[*] values are already in host byteorder
+	 * but ntvfs_handle_search_by_wire_key() expects
+	 * network byteorder
+	 */
+	SSVAL(&fnum, 0, trans->in.setup[1]);
+	fnum_key = data_blob_const(&fnum, 2);
+
+	p = pipe_state_find_key(ipriv, req, &fnum_key);
+	if (!p) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	/*
+	 * Trans requests are only allowed
+	 * if no other Trans or Read is active
+	 */
+	if (tevent_queue_length(p->read_queue) > 0) {
+		return NT_STATUS_PIPE_BUSY;
+	}
+
+	state = talloc(req, struct ipc_trans_state);
+	NT_STATUS_HAVE_NO_MEMORY(state);
+
+	trans->out.setup_count = 0;
+	trans->out.setup = NULL;
+	trans->out.params = data_blob(NULL, 0);
+	trans->out.data = data_blob_talloc(req, NULL, trans->in.max_data);
+	NT_STATUS_HAVE_NO_MEMORY(trans->out.data.data);
+
+	state->ipriv = ipriv;
+	state->p = p;
+	state->req = req;
+	state->trans = trans;
+	state->writev_iov.iov_base = (char *) trans->in.data.data;
+	state->writev_iov.iov_len = trans->in.data.length;
+
+	ipc_readv_next_vector_init(&state->next_vector,
+				   trans->out.data.data,
+				   trans->out.data.length);
+
+	subreq = tstream_writev_queue_send(state,
+					   ipriv->ntvfs->ctx->event_ctx,
+					   p->npipe,
+					   p->write_queue,
+					   &state->writev_iov, 1);
+	NT_STATUS_HAVE_NO_MEMORY(subreq);
+	tevent_req_set_callback(subreq, ipc_trans_writev_done, state);
+
+	req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
+	return NT_STATUS_OK;
+}
+
+static void ipc_trans_writev_done(struct tevent_req *subreq)
+{
+	struct ipc_trans_state *state =
+		tevent_req_callback_data(subreq,
+		struct ipc_trans_state);
+	struct ipc_private *ipriv = state->ipriv;
+	struct pipe_state *p = state->p;
+	struct ntvfs_request *req = state->req;
+	int ret;
+	int sys_errno;
+	NTSTATUS status;
+
+	ret = tstream_writev_queue_recv(subreq, &sys_errno);
+	TALLOC_FREE(subreq);
+	if (ret == 0) {
+		status = NT_STATUS_PIPE_DISCONNECTED;
+		goto reply;
+	} else if (ret == -1) {
+		status = map_nt_error_from_unix_common(sys_errno);
+		goto reply;
+	}
+
+	subreq = tstream_readv_pdu_queue_send(state,
+					      ipriv->ntvfs->ctx->event_ctx,
+					      p->npipe,
+					      p->read_queue,
+					      ipc_readv_next_vector,
+					      &state->next_vector);
+	if (!subreq) {
+		status = NT_STATUS_NO_MEMORY;
+		goto reply;
+	}
+	tevent_req_set_callback(subreq, ipc_trans_readv_done, state);
+	return;
+
+reply:
+	req->async_states->status = status;
+	req->async_states->send_fn(req);
+}
+
+static void ipc_trans_readv_done(struct tevent_req *subreq)
+{
+	struct ipc_trans_state *state =
+		tevent_req_callback_data(subreq,
+		struct ipc_trans_state);
+	struct ntvfs_request *req = state->req;
+	struct smb_trans2 *trans = state->trans;
+	int ret;
+	int sys_errno;
+	NTSTATUS status;
+
+	ret = tstream_readv_pdu_queue_recv(subreq, &sys_errno);
+	TALLOC_FREE(subreq);
+	if (ret == -1) {
+		status = map_nt_error_from_unix_common(sys_errno);
+		goto reply;
+	}
+
+	status = NT_STATUS_OK;
+	if (state->next_vector.remaining > 0) {
+		status = STATUS_BUFFER_OVERFLOW;
+	}
+
+	trans->out.data.length = ret;
+
+reply:
+	req->async_states->status = status;
+	req->async_states->send_fn(req);
+}
+
+/* SMBtrans - set named pipe state */
+static NTSTATUS ipc_set_nm_pipe_state(struct ntvfs_module_context *ntvfs,
+				      struct ntvfs_request *req, struct smb_trans2 *trans)
+{
+	struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
+				    struct ipc_private);
+	struct pipe_state *p;
+	DATA_BLOB fnum_key;
+
+	/* the fnum is in setup[1] */
+	fnum_key = data_blob_const(&trans->in.setup[1], sizeof(trans->in.setup[1]));
+
+	p = pipe_state_find_key(ipriv, req, &fnum_key);
+	if (!p) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	if (trans->in.params.length != 2) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	/*
+	 * TODO: pass this to the tstream_npa logic
+	 */
+	p->device_state = SVAL(trans->in.params.data, 0);
+
+	trans->out.setup_count = 0;
+	trans->out.setup = NULL;
+	trans->out.params = data_blob(NULL, 0);
+	trans->out.data = data_blob(NULL, 0);
+
+	return NT_STATUS_OK;
+}
+
+
+/* SMBtrans - used to provide access to SMB pipes */
+static NTSTATUS ipc_trans(struct ntvfs_module_context *ntvfs,
+				struct ntvfs_request *req, struct smb_trans2 *trans)
+{
+	NTSTATUS status;
+
+	if (strequal(trans->in.trans_name, "\\PIPE\\LANMAN"))
+		return ipc_rap_call(req, ntvfs->ctx->event_ctx, ntvfs->ctx->lp_ctx, trans);
+
+       	if (trans->in.setup_count != 2) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	switch (trans->in.setup[0]) {
+	case TRANSACT_SETNAMEDPIPEHANDLESTATE:
+		status = ipc_set_nm_pipe_state(ntvfs, req, trans);
+		break;
+	case TRANSACT_DCERPCCMD:
+		status = ipc_dcerpc_cmd(ntvfs, req, trans);
+		break;
+	default:
+		status = NT_STATUS_INVALID_PARAMETER;
+		break;
+	}
+
+	return status;
+}
+
+struct ipc_ioctl_state {
+	struct ipc_private *ipriv;
+	struct pipe_state *p;
+	struct ntvfs_request *req;
+	union smb_ioctl *io;
+	struct iovec writev_iov;
+	struct ipc_readv_next_vector_state next_vector;
+};
+
+static void ipc_ioctl_writev_done(struct tevent_req *subreq);
+static void ipc_ioctl_readv_done(struct tevent_req *subreq);
+
+static NTSTATUS ipc_ioctl_smb2(struct ntvfs_module_context *ntvfs,
+			       struct ntvfs_request *req, union smb_ioctl *io)
+{
+	struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
+				    struct ipc_private);
+	struct pipe_state *p;
+	struct ipc_ioctl_state *state;
+	struct tevent_req *subreq;
+
+	switch (io->smb2.in.function) {
+	case FSCTL_NAMED_PIPE_READ_WRITE:
+		break;
+
+	default:
+		return NT_STATUS_FS_DRIVER_REQUIRED;
+	}
+
+	p = pipe_state_find(ipriv, io->smb2.in.file.ntvfs);
+	if (!p) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	/*
+	 * Trans requests are only allowed
+	 * if no other Trans or Read is active
+	 */
+	if (tevent_queue_length(p->read_queue) > 0) {
+		return NT_STATUS_PIPE_BUSY;
+	}
+
+	state = talloc(req, struct ipc_ioctl_state);
+	NT_STATUS_HAVE_NO_MEMORY(state);
+
+	io->smb2.out.reserved	= 0;
+	io->smb2.out.function	= io->smb2.in.function;
+	io->smb2.out.flags	= 0;
+	io->smb2.out.reserved2	= 0;
+	io->smb2.out.in		= data_blob_null;
+	io->smb2.out.out = data_blob_talloc(req, NULL, io->smb2.in.max_output_response);
+	NT_STATUS_HAVE_NO_MEMORY(io->smb2.out.out.data);
+
+	state->ipriv = ipriv;
+	state->p = p;
+	state->req = req;
+	state->io = io;
+	state->writev_iov.iov_base = (char *) io->smb2.in.out.data;
+	state->writev_iov.iov_len = io->smb2.in.out.length;
+
+	ipc_readv_next_vector_init(&state->next_vector,
+				   io->smb2.out.out.data,
+				   io->smb2.out.out.length);
+
+	subreq = tstream_writev_queue_send(state,
+					   ipriv->ntvfs->ctx->event_ctx,
+					   p->npipe,
+					   p->write_queue,
+					   &state->writev_iov, 1);
+	NT_STATUS_HAVE_NO_MEMORY(subreq);
+	tevent_req_set_callback(subreq, ipc_ioctl_writev_done, state);
+
+	req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
+	return NT_STATUS_OK;
+}
+
+static void ipc_ioctl_writev_done(struct tevent_req *subreq)
+{
+	struct ipc_ioctl_state *state =
+		tevent_req_callback_data(subreq,
+		struct ipc_ioctl_state);
+	struct ipc_private *ipriv = state->ipriv;
+	struct pipe_state *p = state->p;
+	struct ntvfs_request *req = state->req;
+	int ret;
+	int sys_errno;
+	NTSTATUS status;
+
+	ret = tstream_writev_queue_recv(subreq, &sys_errno);
+	TALLOC_FREE(subreq);
+	if (ret == -1) {
+		status = map_nt_error_from_unix_common(sys_errno);
+		goto reply;
+	}
+
+	subreq = tstream_readv_pdu_queue_send(state,
+					      ipriv->ntvfs->ctx->event_ctx,
+					      p->npipe,
+					      p->read_queue,
+					      ipc_readv_next_vector,
+					      &state->next_vector);
+	if (!subreq) {
+		status = NT_STATUS_NO_MEMORY;
+		goto reply;
+	}
+	tevent_req_set_callback(subreq, ipc_ioctl_readv_done, state);
+	return;
+
+reply:
+	req->async_states->status = status;
+	req->async_states->send_fn(req);
+}
+
+static void ipc_ioctl_readv_done(struct tevent_req *subreq)
+{
+	struct ipc_ioctl_state *state =
+		tevent_req_callback_data(subreq,
+		struct ipc_ioctl_state);
+	struct ntvfs_request *req = state->req;
+	union smb_ioctl *io = state->io;
+	int ret;
+	int sys_errno;
+	NTSTATUS status;
+
+	ret = tstream_readv_pdu_queue_recv(subreq, &sys_errno);
+	TALLOC_FREE(subreq);
+	if (ret == -1) {
+		status = map_nt_error_from_unix_common(sys_errno);
+		goto reply;
+	}
+
+	status = NT_STATUS_OK;
+	if (state->next_vector.remaining > 0) {
+		status = STATUS_BUFFER_OVERFLOW;
+	}
+
+	io->smb2.out.out.length = ret;
+
+reply:
+	req->async_states->status = status;
+	req->async_states->send_fn(req);
+}
+
+/*
+  ioctl interface
+*/
+static NTSTATUS ipc_ioctl(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req, union smb_ioctl *io)
+{
+	switch (io->generic.level) {
+	case RAW_IOCTL_SMB2:
+		return ipc_ioctl_smb2(ntvfs, req, io);
+
+	case RAW_IOCTL_SMB2_NO_HANDLE:
+		return NT_STATUS_FS_DRIVER_REQUIRED;
+
+	default:
+		return NT_STATUS_ACCESS_DENIED;
+	}
+}
+
+
+/*
+  initialise the IPC backend, registering ourselves with the ntvfs subsystem
+ */
+NTSTATUS ntvfs_ipc_init(TALLOC_CTX *ctx)
+{
+	NTSTATUS ret;
+	struct ntvfs_ops ops;
+	NTVFS_CURRENT_CRITICAL_SIZES(vers);
+
+	ZERO_STRUCT(ops);
+	
+	/* fill in the name and type */
+	ops.name = "default";
+	ops.type = NTVFS_IPC;
+
+	/* fill in all the operations */
+	ops.connect_fn = ipc_connect;
+	ops.disconnect_fn = ipc_disconnect;
+	ops.unlink_fn = ipc_unlink;
+	ops.chkpath_fn = ipc_chkpath;
+	ops.qpathinfo_fn = ipc_qpathinfo;
+	ops.setpathinfo_fn = ipc_setpathinfo;
+	ops.open_fn = ipc_open;
+	ops.mkdir_fn = ipc_mkdir;
+	ops.rmdir_fn = ipc_rmdir;
+	ops.rename_fn = ipc_rename;
+	ops.copy_fn = ipc_copy;
+	ops.ioctl_fn = ipc_ioctl;
+	ops.read_fn = ipc_read;
+	ops.write_fn = ipc_write;
+	ops.seek_fn = ipc_seek;
+	ops.flush_fn = ipc_flush;
+	ops.close_fn = ipc_close;
+	ops.exit_fn = ipc_exit;
+	ops.lock_fn = ipc_lock;
+	ops.setfileinfo_fn = ipc_setfileinfo;
+	ops.qfileinfo_fn = ipc_qfileinfo;
+	ops.fsinfo_fn = ipc_fsinfo;
+	ops.lpq_fn = ipc_lpq;
+	ops.search_first_fn = ipc_search_first;
+	ops.search_next_fn = ipc_search_next;
+	ops.search_close_fn = ipc_search_close;
+	ops.trans_fn = ipc_trans;
+	ops.logoff_fn = ipc_logoff;
+	ops.async_setup_fn = ipc_async_setup;
+	ops.cancel_fn = ipc_cancel;
+
+	/* register ourselves with the NTVFS subsystem. */
+	ret = ntvfs_register(&ops, &vers);
+
+	if (!NT_STATUS_IS_OK(ret)) {
+		DEBUG(0,("Failed to register IPC backend!\n"));
+		return ret;
+	}
+
+	return ret;
+}
diff --git a/source4/ntvfs/ntvfs.h b/source4/ntvfs/ntvfs.h
new file mode 100644
index 0000000..b459579
--- /dev/null
+++ b/source4/ntvfs/ntvfs.h
@@ -0,0 +1,338 @@
+/* 
+   Unix SMB/CIFS implementation.
+   NTVFS structures and defines
+   Copyright (C) Andrew Tridgell			2003
+   Copyright (C) Stefan Metzmacher			2004
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _NTVFS_H_
+#define _NTVFS_H_
+
+#include "libcli/raw/interfaces.h"
+#include "param/share.h"
+#include "librpc/gen_ndr/security.h"
+#include "librpc/gen_ndr/server_id.h"
+
+/* modules can use the following to determine if the interface has changed */
+/* version 1 -> 0 - make module stacking easier -- metze */
+#define NTVFS_INTERFACE_VERSION 0
+
+struct ntvfs_module_context;
+struct ntvfs_request;
+
+/* each backend has to be one one of the following 3 basic types. In
+   earlier versions of Samba backends needed to handle all types, now
+   we implement them separately.
+   The values 1..3 match the SMB2 SMB2_SHARE_TYPE_* values
+ */
+enum ntvfs_type {NTVFS_DISK=1, NTVFS_IPC=2, NTVFS_PRINT=3};
+
+/* the ntvfs operations structure - contains function pointers to 
+   the backend implementations of each operation */
+struct ntvfs_ops {
+	const char *name;
+	enum ntvfs_type type;
+
+	/* initial setup */
+	NTSTATUS (*connect_fn)(struct ntvfs_module_context *ntvfs,
+			    struct ntvfs_request *req,
+			    union smb_tcon *tcon);
+	NTSTATUS (*disconnect_fn)(struct ntvfs_module_context *ntvfs);
+
+	/* async_setup - called when a backend is processing a async request */
+	NTSTATUS (*async_setup_fn)(struct ntvfs_module_context *ntvfs,
+				struct ntvfs_request *req,
+				void *private_data);
+
+	/* filesystem operations */
+	NTSTATUS (*fsinfo_fn)(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req,
+			   union smb_fsinfo *fs);
+
+	/* path operations */
+	NTSTATUS (*unlink_fn)(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req,
+			   union smb_unlink *unl);
+	NTSTATUS (*chkpath_fn)(struct ntvfs_module_context *ntvfs,
+			    struct ntvfs_request *req,
+			    union smb_chkpath *cp);
+	NTSTATUS (*qpathinfo_fn)(struct ntvfs_module_context *ntvfs,
+			      struct ntvfs_request *req,
+			      union smb_fileinfo *st);
+	NTSTATUS (*setpathinfo_fn)(struct ntvfs_module_context *ntvfs,
+				struct ntvfs_request *req,
+				union smb_setfileinfo *st);
+	NTSTATUS (*mkdir_fn)(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req,
+			  union smb_mkdir *md);
+	NTSTATUS (*rmdir_fn)(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req,
+			  struct smb_rmdir *rd);
+	NTSTATUS (*rename_fn)(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req,
+			   union smb_rename *ren);
+	NTSTATUS (*copy_fn)(struct ntvfs_module_context *ntvfs,
+			 struct ntvfs_request *req,
+			 struct smb_copy *cp);
+	NTSTATUS (*open_fn)(struct ntvfs_module_context *ntvfs,
+			 struct ntvfs_request *req,
+			 union smb_open *oi);
+
+	/* directory search */
+	NTSTATUS (*search_first_fn)(struct ntvfs_module_context *ntvfs,
+				 struct ntvfs_request *req,
+				 union smb_search_first *io, void *private_data,
+				 bool (*callback_fn)(void *private_data, const union smb_search_data *file));
+	NTSTATUS (*search_next_fn)(struct ntvfs_module_context *ntvfs,
+				struct ntvfs_request *req,
+				union smb_search_next *io, void *private_data,
+				bool (*callback_fn)(void *private_data, const union smb_search_data *file));
+	NTSTATUS (*search_close_fn)(struct ntvfs_module_context *ntvfs,
+				 struct ntvfs_request *req,
+				 union smb_search_close *io);
+
+	/* operations on open files */
+	NTSTATUS (*ioctl_fn)(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req,
+			  union smb_ioctl *io);
+	NTSTATUS (*read_fn)(struct ntvfs_module_context *ntvfs,
+			 struct ntvfs_request *req,
+			 union smb_read *io);
+	NTSTATUS (*write_fn)(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req,
+			  union smb_write *io);
+	NTSTATUS (*seek_fn)(struct ntvfs_module_context *ntvfs,
+			 struct ntvfs_request *req,
+			 union smb_seek *io);
+	NTSTATUS (*flush_fn)(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req,
+			  union smb_flush *flush);
+	NTSTATUS (*lock_fn)(struct ntvfs_module_context *ntvfs,
+			 struct ntvfs_request *req,
+			 union smb_lock *lck);
+	NTSTATUS (*qfileinfo_fn)(struct ntvfs_module_context *ntvfs,
+			      struct ntvfs_request *req,
+			      union smb_fileinfo *info);
+	NTSTATUS (*setfileinfo_fn)(struct ntvfs_module_context *ntvfs,
+				struct ntvfs_request *req,
+				union smb_setfileinfo *info);
+	NTSTATUS (*close_fn)(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req,
+			  union smb_close *io);
+
+	/* trans interface - used by IPC backend for pipes and RAP calls */
+	NTSTATUS (*trans_fn)(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req,
+			  struct smb_trans2 *trans);
+
+	/* trans2 interface - only used by CIFS backend to prover complete passthru for testing */
+	NTSTATUS (*trans2_fn)(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req,
+			   struct smb_trans2 *trans2);
+
+	/* change notify request */
+	NTSTATUS (*notify_fn)(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req,
+			   union smb_notify *info);
+
+	/* cancel - cancels any pending async request */
+	NTSTATUS (*cancel_fn)(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req);
+
+	/* printing specific operations */
+	NTSTATUS (*lpq_fn)(struct ntvfs_module_context *ntvfs,
+			struct ntvfs_request *req,
+			union smb_lpq *lpq);
+
+	/* logoff - called when a vuid is closed */
+	NTSTATUS (*logoff_fn)(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req);
+	NTSTATUS (*exit_fn)(struct ntvfs_module_context *ntvfs,
+			 struct ntvfs_request *req);
+};
+
+struct ntvfs_module_context {
+	struct ntvfs_module_context *prev, *next;
+	struct ntvfs_context *ctx;
+	int depth;
+	const struct ntvfs_ops *ops;
+	void *private_data;
+};
+
+struct ntvfs_context {
+	enum ntvfs_type type;
+
+	/* the reported filesystem type */
+	char *fs_type;
+
+	/* the reported device type */
+	char *dev_type;
+
+	enum protocol_types protocol;
+
+	/*
+	 * client capabilities
+	 * this field doesn't use protocol specific
+	 * values!
+	 */
+#define NTVFS_CLIENT_CAP_LEVEL_II_OPLOCKS	0x0000000000000001LLU
+	uint64_t client_caps;
+
+	/* 
+	 * linked list of module contexts
+	 */
+	struct ntvfs_module_context *modules;
+
+	struct share_config *config;
+
+	struct server_id server_id;
+	struct loadparm_context *lp_ctx;
+	struct tevent_context *event_ctx;
+	struct imessaging_context *msg_ctx;
+
+	struct {
+		void *private_data;
+		NTSTATUS (*handler)(void *private_data, struct ntvfs_handle *handle, uint8_t level);
+	} oplock;
+
+	struct {
+		const struct tsocket_address *local_address;
+		const struct tsocket_address *remote_address;
+	} client;
+
+	struct {
+		void *private_data;
+		NTSTATUS (*create_new)(void *private_data, struct ntvfs_request *req, struct ntvfs_handle **h);
+		NTSTATUS (*make_valid)(void *private_data, struct ntvfs_handle *h);
+		void (*destroy)(void *private_data, struct ntvfs_handle *h);
+		struct ntvfs_handle *(*search_by_wire_key)(void *private_data,  struct ntvfs_request *req, const DATA_BLOB *key);
+		DATA_BLOB (*get_wire_key)(void *private_data, struct ntvfs_handle *handle, TALLOC_CTX *mem_ctx);
+	} handles;
+};
+
+/* a set of flags to control handling of request structures */
+#define NTVFS_ASYNC_STATE_ASYNC     (1<<1) /* the backend will answer this one later */
+#define NTVFS_ASYNC_STATE_MAY_ASYNC (1<<2) /* the backend is allowed to answer async */
+#define NTVFS_ASYNC_STATE_CLOSE     (1<<3) /* the backend session should be closed */
+
+/* the ntvfs_async_state structure allows backend functions to 
+   delay replying to requests. To use this, the front end must
+   set send_fn to a function to be called by the backend
+   when the reply is finally ready to be sent. The backend
+   must set status to the status it wants in the
+   reply. The backend must set the NTVFS_ASYNC_STATE_ASYNC
+   control_flag on the request to indicate that it wishes to
+   delay the reply
+
+   If NTVFS_ASYNC_STATE_MAY_ASYNC is not set then the backend cannot
+   ask for a delayed reply for this request
+
+   note that the private_data pointer is private to the layer which alloced this struct
+*/
+struct ntvfs_async_state {
+	struct ntvfs_async_state *prev, *next;
+	/* the async handling infos */
+	unsigned int state;
+	void *private_data;
+	void (*send_fn)(struct ntvfs_request *);
+	NTSTATUS status;
+
+	/* the passthru module's per session private data */
+	struct ntvfs_module_context *ntvfs;
+};
+
+struct ntvfs_request {
+	/* the ntvfs_context this requests belongs to */
+	struct ntvfs_context *ctx;
+
+	/* ntvfs per request async states */
+	struct ntvfs_async_state *async_states;
+
+	/* the session_info, with security_token and maybe delegated credentials */
+	struct auth_session_info *session_info;
+
+	/* the smb pid is needed for locking contexts */
+	uint32_t smbpid;
+
+	/*
+	 * client capabilities
+	 * this field doesn't use protocol specific
+	 * values!
+	 * see NTVFS_CLIENT_CAP_*
+	 */
+	uint64_t client_caps;
+
+	/* some statistics for the management tools */
+	struct {
+		/* the system time when the request arrived */
+		struct timeval request_time;
+	} statistics;
+
+	struct {
+		void *private_data;
+	} frontend_data;
+};
+
+struct ntvfs_handle {
+	struct ntvfs_context *ctx;
+
+	struct auth_session_info *session_info;
+
+	uint16_t smbpid;
+
+	struct ntvfs_handle_data {
+		struct ntvfs_handle_data *prev, *next;
+		struct ntvfs_module_context *owner;
+		void *private_data;/* this must be a valid talloc pointer */
+	} *backend_data;
+
+	struct {
+		void *private_data;
+	} frontend_data;
+};
+
+/* this structure is used by backends to determine the size of some critical types */
+struct ntvfs_critical_sizes {
+	int interface_version;
+	int sizeof_ntvfs_critical_sizes;
+	int sizeof_ntvfs_context;
+	int sizeof_ntvfs_module_context;
+	int sizeof_ntvfs_ops;
+	int sizeof_ntvfs_async_state;
+	int sizeof_ntvfs_request;
+	int sizeof_ntvfs_handle;
+	int sizeof_ntvfs_handle_data;
+};
+
+#define NTVFS_CURRENT_CRITICAL_SIZES(c) \
+    struct ntvfs_critical_sizes c = { \
+	.interface_version		= NTVFS_INTERFACE_VERSION, \
+	.sizeof_ntvfs_critical_sizes	= sizeof(struct ntvfs_critical_sizes), \
+	.sizeof_ntvfs_context		= sizeof(struct ntvfs_context), \
+	.sizeof_ntvfs_module_context	= sizeof(struct ntvfs_module_context), \
+	.sizeof_ntvfs_ops		= sizeof(struct ntvfs_ops), \
+	.sizeof_ntvfs_async_state	= sizeof(struct ntvfs_async_state), \
+	.sizeof_ntvfs_request		= sizeof(struct ntvfs_request), \
+	.sizeof_ntvfs_handle		= sizeof(struct ntvfs_handle), \
+	.sizeof_ntvfs_handle_data	= sizeof(struct ntvfs_handle_data), \
+    }
+
+struct imessaging_context;
+#include "librpc/gen_ndr/security.h"
+#include "librpc/gen_ndr/notify.h"
+#include "ntvfs/ntvfs_proto.h"
+
+#endif /* _NTVFS_H_ */
diff --git a/source4/ntvfs/ntvfs_base.c b/source4/ntvfs/ntvfs_base.c
new file mode 100644
index 0000000..5c438bb
--- /dev/null
+++ b/source4/ntvfs/ntvfs_base.c
@@ -0,0 +1,249 @@
+/* 
+   Unix SMB/CIFS implementation.
+   NTVFS base code
+
+   Copyright (C) Andrew Tridgell 2003
+   Copyright (C) Stefan (metze) Metzmacher 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/*
+  this implements the core code for all NTVFS modules. Backends register themselves here.
+*/
+
+#include "includes.h"
+#include "../lib/util/dlinklist.h"
+#include "ntvfs/ntvfs.h"
+#include "param/param.h"
+#include "lib/util/samba_modules.h"
+
+/* the list of currently registered NTVFS backends, note that there
+ * can be more than one backend with the same name, as long as they
+ * have different typesx */
+static struct ntvfs_backend {
+	const struct ntvfs_ops *ops;
+} *backends = NULL;
+static int num_backends;
+
+/*
+  register a NTVFS backend. 
+
+  The 'name' can be later used by other backends to find the operations
+  structure for this backend.  
+
+  The 'type' is used to specify whether this is for a disk, printer or IPC$ share
+*/
+NTSTATUS ntvfs_register(const struct ntvfs_ops *ops,
+				 const struct ntvfs_critical_sizes *const sizes)
+{
+	struct ntvfs_ops *new_ops;
+
+	if (ntvfs_interface_differs(sizes)) {
+		DEBUG(0, ("NTVFS backend '%s' for type %d "
+			  "failed version check\n",
+			  ops->name, (int)ops->type));
+		return NT_STATUS_BAD_FUNCTION_TABLE;
+	}
+
+	if (ntvfs_backend_byname(ops->name, ops->type) != NULL) {
+		/* its already registered! */
+		DEBUG(0,("NTVFS backend '%s' for type %d already registered\n", 
+			 ops->name, (int)ops->type));
+		return NT_STATUS_OBJECT_NAME_COLLISION;
+	}
+
+	backends = realloc_p(backends, struct ntvfs_backend, num_backends+1);
+	if (!backends) {
+		smb_panic("out of memory in ntvfs_register");
+	}
+
+	new_ops = smb_xmemdup(ops, sizeof(*ops));
+	new_ops->name = smb_xstrdup(ops->name);
+
+	backends[num_backends].ops = new_ops;
+
+	num_backends++;
+
+	DEBUG(3,("NTVFS backend '%s' for type %d registered\n", 
+		 ops->name,ops->type));
+
+	return NT_STATUS_OK;
+}
+
+
+/*
+  return the operations structure for a named backend of the specified type
+*/
+const struct ntvfs_ops *ntvfs_backend_byname(const char *name, enum ntvfs_type type)
+{
+	int i;
+
+	for (i=0;i<num_backends;i++) {
+		if (backends[i].ops->type == type && 
+		    strcmp(backends[i].ops->name, name) == 0) {
+			return backends[i].ops;
+		}
+	}
+
+	return NULL;
+}
+
+
+/*
+  return the NTVFS interface version, and the size of some critical types
+  This can be used by backends to either detect compilation errors, or provide
+  multiple implementations for different smbd compilation options in one module
+*/
+
+static const NTVFS_CURRENT_CRITICAL_SIZES(critical_sizes);
+
+const struct ntvfs_critical_sizes *ntvfs_interface_version(void)
+{
+	return &critical_sizes;
+}
+
+bool ntvfs_interface_differs(const struct ntvfs_critical_sizes *const iface)
+{
+	/* The comparison would be easier with memcmp, but compiler-interset
+	 * alignment padding is not guaranteed to be zeroed.
+	 */
+
+#define FIELD_DIFFERS(field) (iface->field != critical_sizes.field)
+
+	if (FIELD_DIFFERS(interface_version))
+		return true;
+
+	if (FIELD_DIFFERS(sizeof_ntvfs_critical_sizes))
+		return true;
+
+	if (FIELD_DIFFERS(sizeof_ntvfs_context))
+		return true;
+
+	if (FIELD_DIFFERS(sizeof_ntvfs_module_context))
+		return true;
+
+	if (FIELD_DIFFERS(sizeof_ntvfs_ops))
+		return true;
+
+	if (FIELD_DIFFERS(sizeof_ntvfs_async_state))
+		return true;
+
+	if (FIELD_DIFFERS(sizeof_ntvfs_request))
+		return true;
+
+	/* Versions match. */
+	return false;
+
+#undef FIELD_DIFFERS
+}
+
+/*
+  initialise a connection structure to point at a NTVFS backend
+*/
+NTSTATUS ntvfs_init_connection(TALLOC_CTX *mem_ctx, struct share_config *scfg, enum ntvfs_type type,
+			       enum protocol_types protocol,
+			       uint64_t ntvfs_client_caps,
+			       struct tevent_context *ev, struct imessaging_context *msg,
+			       struct loadparm_context *lp_ctx,
+			       struct server_id server_id, struct ntvfs_context **_ctx)
+{
+	const char **handlers = share_string_list_option(mem_ctx, scfg, SHARE_NTVFS_HANDLER);
+	int i;
+	struct ntvfs_context *ctx;
+
+	if (!handlers) {
+		return NT_STATUS_INTERNAL_ERROR;
+	}
+
+	ctx = talloc_zero(mem_ctx, struct ntvfs_context);
+	NT_STATUS_HAVE_NO_MEMORY(ctx);
+	ctx->protocol		= protocol;
+	ctx->client_caps	= ntvfs_client_caps;
+	ctx->type		= type;
+	ctx->config		= talloc_steal(ctx, scfg);
+	ctx->event_ctx		= ev;
+	ctx->msg_ctx		= msg;
+	ctx->server_id		= server_id;
+	ctx->lp_ctx		= lp_ctx;
+
+	for (i=0; handlers[i]; i++) {
+		struct ntvfs_module_context *ntvfs;
+
+		ntvfs = talloc_zero(ctx, struct ntvfs_module_context);
+		NT_STATUS_HAVE_NO_MEMORY(ntvfs);
+		ntvfs->ctx = ctx;
+		ntvfs->ops = ntvfs_backend_byname(handlers[i], ctx->type);
+		if (!ntvfs->ops) {
+			DEBUG(1,("ntvfs_init_connection: failed to find backend=%s, type=%d\n",
+				handlers[i], ctx->type));
+			return NT_STATUS_INTERNAL_ERROR;
+		}
+		ntvfs->depth = i;
+		DLIST_ADD_END(ctx->modules, ntvfs);
+	}
+
+	if (!ctx->modules) {
+		return NT_STATUS_INTERNAL_ERROR;
+	}
+
+	*_ctx = ctx;
+	return NT_STATUS_OK;
+}
+
+/*
+  adds the IPC$ share, needed for RPC calls
+ */
+static NTSTATUS ntvfs_add_ipc_share(struct loadparm_context *lp_ctx)
+{
+	struct loadparm_service *ipc;
+
+	if (lpcfg_service(lp_ctx, "IPC$")) {
+		/* it has already been defined in smb.conf or elsewhere */
+		return NT_STATUS_OK;
+	}
+
+	ipc = lpcfg_add_service(lp_ctx, NULL, "IPC$");
+	NT_STATUS_HAVE_NO_MEMORY(ipc);
+
+	lpcfg_do_service_parameter(lp_ctx, ipc, "comment", "IPC Service");
+	lpcfg_do_service_parameter(lp_ctx, ipc, "path", "/dev/null");
+	lpcfg_do_service_parameter(lp_ctx, ipc, "ntvfs handler", "default");
+	lpcfg_do_service_parameter(lp_ctx, ipc, "browseable", "No");
+	lpcfg_do_service_parameter(lp_ctx, ipc, "fstype", "IPC");
+
+	return NT_STATUS_OK;
+}
+
+NTSTATUS ntvfs_init(struct loadparm_context *lp_ctx)
+{
+	static bool initialized = false;
+#define _MODULE_PROTO(init) extern NTSTATUS init(TALLOC_CTX *);
+	STATIC_ntvfs_MODULES_PROTO;
+	init_module_fn static_init[] = { STATIC_ntvfs_MODULES };
+	init_module_fn *shared_init;
+
+	if (initialized) return NT_STATUS_OK;
+	initialized = true;
+	
+	shared_init = load_samba_modules(NULL, "ntvfs");
+
+	run_init_functions(NULL, static_init);
+	run_init_functions(NULL, shared_init);
+
+	talloc_free(shared_init);
+
+	ntvfs_add_ipc_share(lp_ctx);
+	
+	return NT_STATUS_OK;
+}
diff --git a/source4/ntvfs/ntvfs_generic.c b/source4/ntvfs/ntvfs_generic.c
new file mode 100644
index 0000000..de0ae2c
--- /dev/null
+++ b/source4/ntvfs/ntvfs_generic.c
@@ -0,0 +1,1648 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   NTVFS generic level mapping code
+
+   Copyright (C) Andrew Tridgell 2003-2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/*
+  this implements mappings between info levels for NTVFS backend calls
+
+  the idea is that each of these functions implements one of the NTVFS
+  backend calls in terms of the 'generic' call. All backends that use
+  these functions must supply the generic call, but can if it wants to
+  also implement other levels if the need arises
+
+  this allows backend writers to only implement one variant of each
+  call unless they need fine grained control of the calls.
+*/
+
+#include "includes.h"
+#include "ntvfs/ntvfs.h"
+#include "libcli/smb2/smb2.h"
+#include "libcli/smb2/smb2_calls.h"
+
+#undef strcasecmp
+
+/* a second stage function converts from the out parameters of the generic
+   call onto the out parameters of the specific call made */
+typedef NTSTATUS (*second_stage_t)(struct ntvfs_module_context *,
+				   struct ntvfs_request *,
+				   void *, void *, NTSTATUS);
+
+/* 
+   this structure holds the async state for pending mapped async calls
+*/
+struct ntvfs_map_async {
+	struct ntvfs_module_context *ntvfs;
+	void *io, *io2;
+	second_stage_t fn;
+};
+
+/*
+  this is a async wrapper, called from the backend when it has completed
+  a function that it has decided to reply to in an async fashion
+*/
+static void ntvfs_map_async_send(struct ntvfs_request *req)
+{
+	struct ntvfs_map_async *m = talloc_get_type(req->async_states->private_data,
+				    struct ntvfs_map_async);
+
+	ntvfs_async_state_pop(req);
+
+	/* call the _finish function setup in ntvfs_map_async_setup() */
+	req->async_states->status = m->fn(m->ntvfs, req, m->io, m->io2, req->async_states->status);
+
+	/* call the send function from the next module up */
+	req->async_states->send_fn(req);
+}
+
+/*
+  prepare for calling a ntvfs backend with async support
+  io is the original call structure
+  io2 is the new call structure for the mapped call
+  fn is a second stage function for processing the out arguments
+*/
+static NTSTATUS ntvfs_map_async_setup(struct ntvfs_module_context *ntvfs,
+				      struct ntvfs_request *req,
+				      void *io, void *io2,
+				      second_stage_t fn)
+{
+	struct ntvfs_map_async *m;
+	m = talloc(req, struct ntvfs_map_async);
+	if (m == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	m->ntvfs = ntvfs;
+	m->io = io;
+	m->io2 = io2;
+	m->fn = fn;
+	return ntvfs_async_state_push(ntvfs, req, m, ntvfs_map_async_send);
+}
+
+/*
+  called when first stage processing is complete. 
+*/	
+static NTSTATUS ntvfs_map_async_finish(struct ntvfs_request *req, NTSTATUS status)
+{
+	struct ntvfs_map_async *m;
+
+	/* if the backend has decided to reply in an async fashion then
+	   we don't need to do any work here */
+	if (req->async_states->state & NTVFS_ASYNC_STATE_ASYNC) {
+		return status;
+	}
+
+	/* the backend is replying immediately. call the 2nd stage function after popping our local
+	   async state */
+	m = talloc_get_type(req->async_states->private_data,
+			    struct ntvfs_map_async);
+
+	ntvfs_async_state_pop(req);
+
+	return m->fn(m->ntvfs, req, m->io, m->io2, status);
+}
+
+/*
+  see if a filename ends in EXE COM DLL or SYM. This is needed for the
+  DENY_DOS mapping for OpenX
+*/
+bool is_exe_filename(const char *fname)
+{
+	char *p;
+	p = strrchr(fname, '.');
+	if (!p) {
+		return false;
+	}
+	p++;
+	if (strcasecmp(p, "EXE") == 0 ||
+	    strcasecmp(p, "COM") == 0 ||
+	    strcasecmp(p, "DLL") == 0 ||
+	    strcasecmp(p, "SYM") == 0) {
+		return true;
+	}
+	return false;
+}
+
+
+/* 
+   NTVFS openx to ntcreatex mapper
+*/
+static NTSTATUS ntvfs_map_open_finish(struct ntvfs_module_context *ntvfs,
+				      struct ntvfs_request *req, 
+				      union smb_open *io, 
+				      union smb_open *io2, 
+				      NTSTATUS status)
+{
+	time_t write_time = 0;
+	uint32_t set_size = 0;
+	union smb_setfileinfo *sf;
+	unsigned int state;
+
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	switch (io->generic.level) {
+	case RAW_OPEN_OPEN:
+		io->openold.out.file.ntvfs = io2->generic.out.file.ntvfs;
+		io->openold.out.attrib     = io2->generic.out.attrib;
+		io->openold.out.write_time = nt_time_to_unix(io2->generic.out.write_time);
+		io->openold.out.size       = io2->generic.out.size;
+		io->openold.out.rmode      = io->openold.in.open_mode;
+		break;
+
+	case RAW_OPEN_OPENX:
+		io->openx.out.file.ntvfs  = io2->generic.out.file.ntvfs;
+		io->openx.out.attrib      = io2->generic.out.attrib;
+		io->openx.out.write_time  = nt_time_to_unix(io2->generic.out.write_time);
+		io->openx.out.size        = io2->generic.out.size;
+		io->openx.out.access      = (io->openx.in.open_mode & OPENX_MODE_ACCESS_MASK);
+		io->openx.out.ftype       = 0;
+		io->openx.out.devstate    = 0;
+		io->openx.out.action      = io2->generic.out.create_action;
+		io->openx.out.unique_fid  = 0;
+		io->openx.out.access_mask = SEC_STD_ALL;
+		io->openx.out.unknown     = 0;
+		
+		/* we need to extend the file to the requested size if
+		   it was newly created */
+		if (io2->generic.out.create_action == NTCREATEX_ACTION_CREATED) {
+			set_size = io->openx.in.size;
+		}
+		break;
+
+	case RAW_OPEN_T2OPEN:
+		io->t2open.out.file.ntvfs  = io2->generic.out.file.ntvfs;
+		io->t2open.out.attrib      = io2->generic.out.attrib;
+		io->t2open.out.write_time  = nt_time_to_unix(io2->generic.out.write_time);
+		io->t2open.out.size        = io2->generic.out.size;
+		io->t2open.out.access      = io->t2open.in.open_mode;
+		io->t2open.out.ftype       = 0;
+		io->t2open.out.devstate    = 0;
+		io->t2open.out.action      = io2->generic.out.create_action;
+		io->t2open.out.file_id      = 0;
+		break;
+
+	case RAW_OPEN_MKNEW:
+	case RAW_OPEN_CREATE:
+		io->mknew.out.file.ntvfs= io2->generic.out.file.ntvfs;
+		write_time		= io->mknew.in.write_time;
+		break;
+
+	case RAW_OPEN_CTEMP:
+		io->ctemp.out.file.ntvfs= io2->generic.out.file.ntvfs;
+		io->ctemp.out.name 	= talloc_strdup(req, io2->generic.in.fname + 
+							strlen(io->ctemp.in.directory) + 1);
+		NT_STATUS_HAVE_NO_MEMORY(io->ctemp.out.name);
+		break;
+
+	case RAW_OPEN_SMB2:
+		ZERO_STRUCT(io->smb2.out);
+		io->smb2.out.file.ntvfs		= io2->generic.out.file.ntvfs;
+		switch (io2->generic.out.oplock_level) {
+		case BATCH_OPLOCK_RETURN:
+			io->smb2.out.oplock_level = SMB2_OPLOCK_LEVEL_BATCH;
+			break;
+		case EXCLUSIVE_OPLOCK_RETURN:
+			io->smb2.out.oplock_level = SMB2_OPLOCK_LEVEL_EXCLUSIVE;
+			break;
+		case LEVEL_II_OPLOCK_RETURN:
+			io->smb2.out.oplock_level = SMB2_OPLOCK_LEVEL_II;
+			break;
+		default:
+			io->smb2.out.oplock_level = SMB2_OPLOCK_LEVEL_NONE;
+			break;
+		}
+		io->smb2.out.reserved		= 0;
+		io->smb2.out.create_action	= io2->generic.out.create_action;
+		io->smb2.out.create_time	= io2->generic.out.create_time;
+		io->smb2.out.access_time	= io2->generic.out.access_time;
+		io->smb2.out.write_time		= io2->generic.out.write_time;
+		io->smb2.out.change_time	= io2->generic.out.change_time;
+		io->smb2.out.alloc_size		= io2->generic.out.alloc_size;
+		io->smb2.out.size		= io2->generic.out.size;
+		io->smb2.out.file_attr		= io2->generic.out.attrib;
+		io->smb2.out.reserved2		= 0;
+		io->smb2.out.maximal_access     = io2->generic.out.maximal_access;
+		memcpy(io->smb2.out.on_disk_id, io2->generic.out.on_disk_id,
+		       sizeof(io2->generic.out.on_disk_id));
+		break;
+
+	default:
+		return NT_STATUS_INVALID_LEVEL;
+	}
+
+	/* doing a secondary request async is more trouble than its
+	   worth */
+	state = req->async_states->state;
+	req->async_states->state &= ~NTVFS_ASYNC_STATE_MAY_ASYNC;
+
+	if (write_time != 0) {
+		sf = talloc(req, union smb_setfileinfo);
+		NT_STATUS_HAVE_NO_MEMORY(sf);
+		sf->generic.level           = RAW_SFILEINFO_STANDARD;
+		sf->generic.in.file.ntvfs   = io2->generic.out.file.ntvfs;
+		sf->standard.in.create_time = 0;
+		sf->standard.in.write_time  = write_time;
+		sf->standard.in.access_time = 0;
+		status = ntvfs->ops->setfileinfo_fn(ntvfs, req, sf);
+	}
+
+	if (set_size != 0) {
+		sf = talloc(req, union smb_setfileinfo);			
+		NT_STATUS_HAVE_NO_MEMORY(sf);
+		sf->generic.level            = RAW_SFILEINFO_END_OF_FILE_INFORMATION;
+		sf->generic.in.file.ntvfs    = io2->generic.out.file.ntvfs;
+		sf->end_of_file_info.in.size = set_size;
+		status = ntvfs->ops->setfileinfo_fn(ntvfs, req, sf);
+		if (NT_STATUS_IS_OK(status)) {
+			io->openx.out.size = io->openx.in.size;
+		}
+	}
+
+	req->async_states->state = state;
+
+	return NT_STATUS_OK;
+}
+
+/*
+  the core of the mapping between openx style parameters and ntcreatex 
+  parameters
+*/
+static NTSTATUS map_openx_open(uint16_t flags, uint16_t open_mode, 
+			       uint16_t open_func, const char *fname,
+			       union smb_open *io2)
+{
+	io2->generic.in.create_options = NTCREATEX_OPTIONS_NON_DIRECTORY_FILE;
+	io2->generic.in.private_flags = 0;
+
+	if (flags & OPENX_FLAGS_REQUEST_OPLOCK) {
+		io2->generic.in.flags |= NTCREATEX_FLAGS_REQUEST_OPLOCK;
+	}
+	if (flags & OPENX_FLAGS_REQUEST_BATCH_OPLOCK) {
+		io2->generic.in.flags |= NTCREATEX_FLAGS_REQUEST_BATCH_OPLOCK;
+	}
+
+	switch (open_mode & OPENX_MODE_ACCESS_MASK) {
+	case OPENX_MODE_ACCESS_READ:
+	case OPENX_MODE_ACCESS_EXEC:
+		io2->generic.in.access_mask = SEC_RIGHTS_FILE_READ;
+		break;
+	case OPENX_MODE_ACCESS_WRITE:
+		io2->generic.in.access_mask = SEC_RIGHTS_FILE_WRITE;
+		break;
+	case OPENX_MODE_ACCESS_RDWR:
+	case OPENX_MODE_ACCESS_FCB:
+		io2->generic.in.access_mask = 
+			SEC_RIGHTS_FILE_READ | 
+			SEC_RIGHTS_FILE_WRITE;
+		break;
+	default:
+		return NT_STATUS_DOS(ERRDOS, ERRbadaccess);
+	}
+
+	switch (open_mode & OPENX_MODE_DENY_MASK) {
+	case OPENX_MODE_DENY_READ:
+		io2->generic.in.share_access = NTCREATEX_SHARE_ACCESS_WRITE;
+		break;
+	case OPENX_MODE_DENY_WRITE:
+		io2->generic.in.share_access = NTCREATEX_SHARE_ACCESS_READ;
+		break;
+	case OPENX_MODE_DENY_ALL:
+		io2->generic.in.share_access = NTCREATEX_SHARE_ACCESS_NONE;
+		break;
+	case OPENX_MODE_DENY_NONE:
+		io2->generic.in.share_access = 
+			NTCREATEX_SHARE_ACCESS_READ | 
+			NTCREATEX_SHARE_ACCESS_WRITE;
+		break;
+	case OPENX_MODE_DENY_DOS:
+		/* DENY_DOS is quite strange - it depends on the filename! */
+		io2->generic.in.private_flags |=
+			NTCREATEX_FLAG_DENY_DOS;
+		if (is_exe_filename(fname)) {
+			io2->generic.in.share_access = 
+				NTCREATEX_SHARE_ACCESS_READ | 
+				NTCREATEX_SHARE_ACCESS_WRITE;
+		} else {
+			if ((open_mode & OPENX_MODE_ACCESS_MASK) == OPENX_MODE_ACCESS_READ) {
+				io2->generic.in.share_access = NTCREATEX_SHARE_ACCESS_READ;
+			} else {
+				io2->generic.in.share_access = NTCREATEX_SHARE_ACCESS_NONE;
+			}
+		}
+		break;
+	case OPENX_MODE_DENY_FCB:
+		io2->generic.in.private_flags |= NTCREATEX_FLAG_DENY_FCB;
+		io2->generic.in.share_access = NTCREATEX_SHARE_ACCESS_NONE;
+		break;
+	default:
+		return NT_STATUS_DOS(ERRDOS, ERRbadaccess);
+	}
+
+	switch (open_func) {
+	case (OPENX_OPEN_FUNC_OPEN):
+		io2->generic.in.open_disposition = NTCREATEX_DISP_OPEN;
+		break;
+	case (OPENX_OPEN_FUNC_TRUNC):
+		io2->generic.in.open_disposition = NTCREATEX_DISP_OVERWRITE;
+		break;
+	case (OPENX_OPEN_FUNC_FAIL | OPENX_OPEN_FUNC_CREATE):
+		io2->generic.in.open_disposition = NTCREATEX_DISP_CREATE;
+		break;
+	case (OPENX_OPEN_FUNC_OPEN | OPENX_OPEN_FUNC_CREATE):
+		io2->generic.in.open_disposition = NTCREATEX_DISP_OPEN_IF;
+		break;
+	case (OPENX_OPEN_FUNC_TRUNC | OPENX_OPEN_FUNC_CREATE):
+		io2->generic.in.open_disposition = NTCREATEX_DISP_OVERWRITE_IF;
+		break;			
+	default:
+		/* this one is very strange */
+		if ((open_mode & OPENX_MODE_ACCESS_MASK) == OPENX_MODE_ACCESS_EXEC) {
+			io2->generic.in.open_disposition = NTCREATEX_DISP_CREATE;
+			break;
+		}
+		return NT_STATUS_DOS(ERRDOS, ERRbadaccess);
+	}
+
+	return NT_STATUS_OK;
+}
+
+/* 
+   NTVFS open generic to any mapper
+*/
+NTSTATUS ntvfs_map_open(struct ntvfs_module_context *ntvfs,
+				 struct ntvfs_request *req,
+				 union smb_open *io)
+{
+	NTSTATUS status;
+	union smb_open *io2;
+
+	io2 = talloc_zero(req, union smb_open);
+	if (io2 == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	status = ntvfs_map_async_setup(ntvfs, req,
+				       io, io2, 
+				       (second_stage_t)ntvfs_map_open_finish);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	io2->generic.level = RAW_OPEN_GENERIC;
+		
+	switch (io->generic.level) {
+	case RAW_OPEN_OPENX:
+		status = map_openx_open(io->openx.in.flags,
+					io->openx.in.open_mode, 
+					io->openx.in.open_func, 
+					io->openx.in.fname,
+					io2);
+		if (!NT_STATUS_IS_OK(status)) {
+			goto done;
+		}
+		
+		io2->generic.in.file_attr = io->openx.in.file_attrs;
+		io2->generic.in.fname = io->openx.in.fname;
+		
+		status = ntvfs->ops->open_fn(ntvfs, req, io2);
+		break;
+		
+		
+	case RAW_OPEN_OPEN:
+		status = map_openx_open(0,
+					io->openold.in.open_mode, 
+					OPENX_OPEN_FUNC_OPEN, 
+					io->openold.in.fname,
+					io2);
+		if (!NT_STATUS_IS_OK(status)) {
+			goto done;
+		}
+
+		io2->generic.in.file_attr = io->openold.in.search_attrs;
+		io2->generic.in.fname = io->openold.in.fname;
+
+		status = ntvfs->ops->open_fn(ntvfs, req, io2);
+		break;
+
+	case RAW_OPEN_T2OPEN:
+		io2->generic.level         = RAW_OPEN_NTTRANS_CREATE;
+
+		if (io->t2open.in.open_func == 0) {
+			status = NT_STATUS_OBJECT_NAME_COLLISION;
+			goto done;
+		}
+
+		status = map_openx_open(io->t2open.in.flags,
+					io->t2open.in.open_mode, 
+					io->t2open.in.open_func, 
+					io->t2open.in.fname,
+					io2);
+		if (!NT_STATUS_IS_OK(status)) {
+			goto done;
+		}
+
+		io2->generic.in.file_attr        = io->t2open.in.file_attrs;
+		io2->generic.in.fname            = io->t2open.in.fname;
+		io2->generic.in.ea_list          = talloc(io2, struct smb_ea_list);
+		io2->generic.in.ea_list->num_eas = io->t2open.in.num_eas;
+		io2->generic.in.ea_list->eas     = io->t2open.in.eas;
+
+		status = ntvfs->ops->open_fn(ntvfs, req, io2);
+		break;
+
+	case RAW_OPEN_MKNEW:
+		io2->generic.in.file_attr = io->mknew.in.attrib;
+		io2->generic.in.fname = io->mknew.in.fname;
+		io2->generic.in.open_disposition = NTCREATEX_DISP_CREATE;
+		io2->generic.in.access_mask = 
+			SEC_RIGHTS_FILE_READ |
+			SEC_RIGHTS_FILE_WRITE;
+		io2->generic.in.share_access = 
+			NTCREATEX_SHARE_ACCESS_READ | 
+			NTCREATEX_SHARE_ACCESS_WRITE;
+		status = ntvfs->ops->open_fn(ntvfs, req, io2);
+		break;
+
+	case RAW_OPEN_CREATE:
+		io2->generic.in.file_attr = io->mknew.in.attrib;
+		io2->generic.in.fname = io->mknew.in.fname;
+		io2->generic.in.open_disposition = NTCREATEX_DISP_OPEN_IF;
+		io2->generic.in.access_mask = 
+			SEC_RIGHTS_FILE_READ |
+			SEC_RIGHTS_FILE_WRITE;
+		io2->generic.in.share_access = 
+			NTCREATEX_SHARE_ACCESS_READ | 
+			NTCREATEX_SHARE_ACCESS_WRITE;
+		status = ntvfs->ops->open_fn(ntvfs, req, io2);
+		break;
+
+	case RAW_OPEN_CTEMP:
+		io2->generic.in.file_attr = io->ctemp.in.attrib;
+		io2->generic.in.fname = 
+			talloc_asprintf(io2, "%s\\SRV%s", 
+					io->ctemp.in.directory,
+					generate_random_str_list(io2, 5, "0123456789"));
+		io2->generic.in.open_disposition = NTCREATEX_DISP_CREATE;
+		io2->generic.in.access_mask = 
+			SEC_RIGHTS_FILE_READ |
+			SEC_RIGHTS_FILE_WRITE;
+		io2->generic.in.share_access = 
+			NTCREATEX_SHARE_ACCESS_READ | 
+			NTCREATEX_SHARE_ACCESS_WRITE;
+		status = ntvfs->ops->open_fn(ntvfs, req, io2);
+		break;
+	case RAW_OPEN_SMB2:
+		switch (io->smb2.in.oplock_level) {
+		case SMB2_OPLOCK_LEVEL_BATCH:
+			io2->generic.in.flags = NTCREATEX_FLAGS_REQUEST_BATCH_OPLOCK |
+						NTCREATEX_FLAGS_REQUEST_OPLOCK;
+			break;
+		case SMB2_OPLOCK_LEVEL_EXCLUSIVE:
+			io2->generic.in.flags = NTCREATEX_FLAGS_REQUEST_OPLOCK;
+			break;
+		default:
+			io2->generic.in.flags = 0;
+			break;
+		}
+		io2->generic.in.root_fid.fnum	= 0;
+		io2->generic.in.access_mask	= io->smb2.in.desired_access;
+		io2->generic.in.alloc_size	= io->smb2.in.alloc_size;
+		io2->generic.in.file_attr	= io->smb2.in.file_attributes;
+		io2->generic.in.share_access	= io->smb2.in.share_access;
+		io2->generic.in.open_disposition= io->smb2.in.create_disposition;
+		io2->generic.in.create_options	= io->smb2.in.create_options;
+		io2->generic.in.impersonation	= io->smb2.in.impersonation_level;
+		io2->generic.in.security_flags	= 0;
+		io2->generic.in.fname		= io->smb2.in.fname;
+		io2->generic.in.sec_desc	= io->smb2.in.sec_desc;
+		io2->generic.in.ea_list		= &io->smb2.in.eas;
+		io2->generic.in.query_maximal_access = io->smb2.in.query_maximal_access; 
+		io2->generic.in.query_on_disk_id = io->smb2.in.query_on_disk_id;
+		io2->generic.in.private_flags	= 0;
+
+		/* we don't support timewarp yet */
+		if (io->smb2.in.timewarp != 0) {
+			status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
+			break;
+		}
+
+		/* we need to check these bits before we check the private mask */
+		if (io2->generic.in.create_options & SMB2_CREATE_OPTIONS_NOT_SUPPORTED_MASK) {
+			DEBUG(2,(__location__ " create_options 0x%x not supported\n",
+				 io2->generic.in.create_options));
+			status = NT_STATUS_NOT_SUPPORTED;
+			break;
+		}
+
+		/* TODO: find out why only SMB2 ignores these */
+		io2->generic.in.create_options &= ~NTCREATEX_OPTIONS_SYNC_ALERT;
+		io2->generic.in.create_options &= ~NTCREATEX_OPTIONS_ASYNC_ALERT;
+
+		status = ntvfs->ops->open_fn(ntvfs, req, io2);
+		break;
+
+	default:
+		status = NT_STATUS_INVALID_LEVEL;
+		break;
+	}
+done:
+	return ntvfs_map_async_finish(req, status);
+}
+
+
+/* 
+   NTVFS any to fsinfo mapper
+*/
+static NTSTATUS ntvfs_map_fsinfo_finish(struct ntvfs_module_context *ntvfs,
+				      struct ntvfs_request *req,
+				      union smb_fsinfo *fs,
+				      union smb_fsinfo *fs2,
+				      NTSTATUS status)
+{
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	/* and convert it to the required level */
+	switch (fs->generic.level) {
+	case RAW_QFS_DSKATTR: {
+		/* map from generic to DSKATTR */
+		unsigned int bpunit = 64;
+
+		/* we need to scale the sizes to fit */
+		for (bpunit=64; bpunit<0x10000; bpunit *= 2) {
+			if (fs2->generic.out.blocks_total * (double)fs2->generic.out.block_size < bpunit * 512 * 65535.0) {
+				break;
+			}
+		}
+
+		fs->dskattr.out.blocks_per_unit = bpunit;
+		fs->dskattr.out.block_size = 512;
+		fs->dskattr.out.units_total = 
+			(fs2->generic.out.blocks_total * (double)fs2->generic.out.block_size) / (bpunit * 512);
+		fs->dskattr.out.units_free  = 
+			(fs2->generic.out.blocks_free  * (double)fs2->generic.out.block_size) / (bpunit * 512);
+
+		/* we must return a maximum of 2G to old DOS systems, or they get very confused */
+		if (bpunit > 64 && req->ctx->protocol <= PROTOCOL_LANMAN2) {
+			fs->dskattr.out.blocks_per_unit = 64;
+			fs->dskattr.out.units_total = 0xFFFF;
+			fs->dskattr.out.units_free = 0xFFFF;
+		}
+		return NT_STATUS_OK;
+	}
+
+	case RAW_QFS_ALLOCATION:
+		fs->allocation.out.fs_id = fs2->generic.out.fs_id;
+		fs->allocation.out.total_alloc_units = fs2->generic.out.blocks_total;
+		fs->allocation.out.avail_alloc_units = fs2->generic.out.blocks_free;
+		fs->allocation.out.sectors_per_unit = 1;
+		fs->allocation.out.bytes_per_sector = fs2->generic.out.block_size;
+		return NT_STATUS_OK;
+
+	case RAW_QFS_VOLUME:
+		fs->volume.out.serial_number = fs2->generic.out.serial_number;
+		fs->volume.out.volume_name.s = fs2->generic.out.volume_name;
+		return NT_STATUS_OK;
+
+	case RAW_QFS_VOLUME_INFO:
+	case RAW_QFS_VOLUME_INFORMATION:
+		fs->volume_info.out.create_time = fs2->generic.out.create_time;
+		fs->volume_info.out.serial_number = fs2->generic.out.serial_number;
+		fs->volume_info.out.volume_name.s = fs2->generic.out.volume_name;
+		return NT_STATUS_OK;
+
+	case RAW_QFS_SIZE_INFO:
+	case RAW_QFS_SIZE_INFORMATION:
+		fs->size_info.out.total_alloc_units = fs2->generic.out.blocks_total;
+		fs->size_info.out.avail_alloc_units = fs2->generic.out.blocks_free;
+		fs->size_info.out.sectors_per_unit = 1;
+		fs->size_info.out.bytes_per_sector = fs2->generic.out.block_size;
+		return NT_STATUS_OK;
+
+	case RAW_QFS_DEVICE_INFO:
+	case RAW_QFS_DEVICE_INFORMATION:
+		fs->device_info.out.device_type = fs2->generic.out.device_type;
+		fs->device_info.out.characteristics = fs2->generic.out.device_characteristics;
+		return NT_STATUS_OK;
+
+	case RAW_QFS_ATTRIBUTE_INFO:
+	case RAW_QFS_ATTRIBUTE_INFORMATION:
+		fs->attribute_info.out.fs_attr = fs2->generic.out.fs_attr;
+		fs->attribute_info.out.max_file_component_length = fs2->generic.out.max_file_component_length;
+		fs->attribute_info.out.fs_type.s = fs2->generic.out.fs_type;
+		return NT_STATUS_OK;
+
+	case RAW_QFS_QUOTA_INFORMATION:
+		ZERO_STRUCT(fs->quota_information.out.unknown);
+		fs->quota_information.out.quota_soft = fs2->generic.out.quota_soft;
+		fs->quota_information.out.quota_hard = fs2->generic.out.quota_hard;
+		fs->quota_information.out.quota_flags = fs2->generic.out.quota_flags;
+		return NT_STATUS_OK;
+
+	case RAW_QFS_FULL_SIZE_INFORMATION:
+		fs->full_size_information.out.total_alloc_units = fs2->generic.out.blocks_total;
+		fs->full_size_information.out.call_avail_alloc_units = fs2->generic.out.blocks_free;
+		fs->full_size_information.out.actual_avail_alloc_units = fs2->generic.out.blocks_free;
+		fs->full_size_information.out.sectors_per_unit = 1;
+		fs->full_size_information.out.bytes_per_sector = fs2->generic.out.block_size;
+		return NT_STATUS_OK;
+
+	case RAW_QFS_OBJECTID_INFORMATION:
+		fs->objectid_information.out.guid = fs2->generic.out.guid;
+		ZERO_STRUCT(fs->objectid_information.out.unknown);
+		return NT_STATUS_OK;
+
+	case RAW_QFS_SECTOR_SIZE_INFORMATION:
+		fs->sector_size_info.out.logical_bytes_per_sector
+						= fs2->generic.out.block_size;
+		fs->sector_size_info.out.phys_bytes_per_sector_atomic
+						= fs2->generic.out.block_size;
+		fs->sector_size_info.out.phys_bytes_per_sector_perf
+						= fs2->generic.out.block_size;
+		fs->sector_size_info.out.fs_effective_phys_bytes_per_sector_atomic
+						= fs2->generic.out.block_size;
+		fs->sector_size_info.out.flags
+					= QFS_SSINFO_FLAGS_ALIGNED_DEVICE
+				| QFS_SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE;
+		fs->sector_size_info.out.byte_off_sector_align = 0;
+		fs->sector_size_info.out.byte_off_partition_align = 0;
+		return NT_STATUS_OK;
+
+	case RAW_QFS_GENERIC:
+	case RAW_QFS_UNIX_INFO:
+		return NT_STATUS_INVALID_LEVEL;
+	}
+
+	return NT_STATUS_INVALID_LEVEL;
+}
+
+/*
+   NTVFS fsinfo any to generic mapper
+*/
+NTSTATUS ntvfs_map_fsinfo(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req,
+			  union smb_fsinfo *fs)
+{
+	NTSTATUS status;
+	union smb_fsinfo *fs2;
+
+	fs2 = talloc(req, union smb_fsinfo);
+	if (fs2 == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	if (fs->generic.level == RAW_QFS_GENERIC) {
+		return NT_STATUS_INVALID_LEVEL;
+	}
+
+	status = ntvfs_map_async_setup(ntvfs, req, fs, fs2,
+				       (second_stage_t)ntvfs_map_fsinfo_finish);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	/* ask the backend for the generic info */
+	fs2->generic.level = RAW_QFS_GENERIC;
+
+	status = ntvfs->ops->fsinfo_fn(ntvfs, req, fs2);
+	return ntvfs_map_async_finish(req, status);
+}
+
+
+/* 
+   NTVFS fileinfo generic to any mapper
+*/
+NTSTATUS ntvfs_map_fileinfo(TALLOC_CTX *mem_ctx,
+				     union smb_fileinfo *info, 
+				     union smb_fileinfo *info2)
+{
+	int i;
+	/* and convert it to the required level using results in info2 */
+	switch (info->generic.level) {
+	case RAW_FILEINFO_GETATTR:
+		info->getattr.out.attrib = info2->generic.out.attrib & 0xff;
+		info->getattr.out.size = info2->generic.out.size;
+		info->getattr.out.write_time = nt_time_to_unix(info2->generic.out.write_time);
+		return NT_STATUS_OK;
+		
+	case RAW_FILEINFO_GETATTRE:
+		info->getattre.out.attrib = info2->generic.out.attrib;
+		info->getattre.out.size = info2->generic.out.size;
+		info->getattre.out.write_time = nt_time_to_unix(info2->generic.out.write_time);
+		info->getattre.out.create_time = nt_time_to_unix(info2->generic.out.create_time);
+		info->getattre.out.access_time = nt_time_to_unix(info2->generic.out.access_time);
+		info->getattre.out.alloc_size = info2->generic.out.alloc_size;
+		return NT_STATUS_OK;
+		
+	case RAW_FILEINFO_NETWORK_OPEN_INFORMATION:
+		info->network_open_information.out.create_time = info2->generic.out.create_time;
+		info->network_open_information.out.access_time = info2->generic.out.access_time;
+		info->network_open_information.out.write_time =  info2->generic.out.write_time;
+		info->network_open_information.out.change_time = info2->generic.out.change_time;
+		info->network_open_information.out.alloc_size = info2->generic.out.alloc_size;
+		info->network_open_information.out.size = info2->generic.out.size;
+		info->network_open_information.out.attrib = info2->generic.out.attrib;
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_ALL_INFO:
+	case RAW_FILEINFO_ALL_INFORMATION:
+		info->all_info.out.create_time = info2->generic.out.create_time;
+		info->all_info.out.access_time = info2->generic.out.access_time;
+		info->all_info.out.write_time =  info2->generic.out.write_time;
+		info->all_info.out.change_time = info2->generic.out.change_time;
+		info->all_info.out.attrib = info2->generic.out.attrib;
+		info->all_info.out.alloc_size = info2->generic.out.alloc_size;
+		info->all_info.out.size = info2->generic.out.size;
+		info->all_info.out.nlink = info2->generic.out.nlink;
+		info->all_info.out.delete_pending = info2->generic.out.delete_pending;
+		info->all_info.out.directory = info2->generic.out.directory;
+		info->all_info.out.ea_size = info2->generic.out.ea_size;
+		info->all_info.out.fname.s = info2->generic.out.fname.s;
+		info->all_info.out.fname.private_length = info2->generic.out.fname.private_length;
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_BASIC_INFO:
+	case RAW_FILEINFO_BASIC_INFORMATION:
+		info->basic_info.out.create_time = info2->generic.out.create_time;
+		info->basic_info.out.access_time = info2->generic.out.access_time;
+		info->basic_info.out.write_time = info2->generic.out.write_time;
+		info->basic_info.out.change_time = info2->generic.out.change_time;
+		info->basic_info.out.attrib = info2->generic.out.attrib;
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_STANDARD:
+		info->standard.out.create_time = nt_time_to_unix(info2->generic.out.create_time);
+		info->standard.out.access_time = nt_time_to_unix(info2->generic.out.access_time);
+		info->standard.out.write_time = nt_time_to_unix(info2->generic.out.write_time);
+		info->standard.out.size = info2->generic.out.size;
+		info->standard.out.alloc_size = info2->generic.out.alloc_size;
+		info->standard.out.attrib = info2->generic.out.attrib;
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_EA_SIZE:
+		info->ea_size.out.create_time = nt_time_to_unix(info2->generic.out.create_time);
+		info->ea_size.out.access_time = nt_time_to_unix(info2->generic.out.access_time);
+		info->ea_size.out.write_time = nt_time_to_unix(info2->generic.out.write_time);
+		info->ea_size.out.size = info2->generic.out.size;
+		info->ea_size.out.alloc_size = info2->generic.out.alloc_size;
+		info->ea_size.out.attrib = info2->generic.out.attrib;
+		info->ea_size.out.ea_size = info2->generic.out.ea_size;
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_STANDARD_INFO:
+	case RAW_FILEINFO_STANDARD_INFORMATION:
+		info->standard_info.out.alloc_size = info2->generic.out.alloc_size;
+		info->standard_info.out.size = info2->generic.out.size;
+		info->standard_info.out.nlink = info2->generic.out.nlink;
+		info->standard_info.out.delete_pending = info2->generic.out.delete_pending;
+		info->standard_info.out.directory = info2->generic.out.directory;
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_INTERNAL_INFORMATION:
+		info->internal_information.out.file_id = info2->generic.out.file_id;
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_EA_INFO:
+	case RAW_FILEINFO_EA_INFORMATION:
+		info->ea_info.out.ea_size = info2->generic.out.ea_size;
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_ATTRIBUTE_TAG_INFORMATION:
+		info->attribute_tag_information.out.attrib = info2->generic.out.attrib;
+		info->attribute_tag_information.out.reparse_tag = info2->generic.out.reparse_tag;
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_STREAM_INFO:
+	case RAW_FILEINFO_STREAM_INFORMATION:
+		info->stream_info.out.num_streams = info2->generic.out.num_streams;
+		if (info->stream_info.out.num_streams > 0) {
+			info->stream_info.out.streams = 
+				talloc_array(mem_ctx, 
+					       struct stream_struct,
+					       info->stream_info.out.num_streams);
+			if (!info->stream_info.out.streams) {
+				DEBUG(2,("ntvfs_map_fileinfo: no memory for %d streams\n",
+					info->stream_info.out.num_streams));
+				return NT_STATUS_NO_MEMORY;
+			}
+			for (i=0; i < info->stream_info.out.num_streams; i++) {
+				info->stream_info.out.streams[i] = info2->generic.out.streams[i];
+				info->stream_info.out.streams[i].stream_name.s = 
+					talloc_strdup(info->stream_info.out.streams,
+						      info2->generic.out.streams[i].stream_name.s);
+				if (!info->stream_info.out.streams[i].stream_name.s) {
+					DEBUG(2,("ntvfs_map_fileinfo: no memory for stream_name\n"));
+					return NT_STATUS_NO_MEMORY;
+				}
+			}
+		}
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_NAME_INFO:
+	case RAW_FILEINFO_NAME_INFORMATION:
+		info->name_info.out.fname.s = talloc_strdup(mem_ctx, info2->generic.out.fname.s);
+		NT_STATUS_HAVE_NO_MEMORY(info->name_info.out.fname.s);
+		info->name_info.out.fname.private_length = info2->generic.out.fname.private_length;
+		return NT_STATUS_OK;
+		
+	case RAW_FILEINFO_ALT_NAME_INFO:
+	case RAW_FILEINFO_ALT_NAME_INFORMATION:
+	case RAW_FILEINFO_SMB2_ALT_NAME_INFORMATION:
+		info->alt_name_info.out.fname.s = talloc_strdup(mem_ctx, info2->generic.out.alt_fname.s);
+		NT_STATUS_HAVE_NO_MEMORY(info->alt_name_info.out.fname.s);
+		info->alt_name_info.out.fname.private_length = info2->generic.out.alt_fname.private_length;
+		return NT_STATUS_OK;
+	
+	case RAW_FILEINFO_POSITION_INFORMATION:
+		info->position_information.out.position = info2->generic.out.position;
+		return NT_STATUS_OK;
+	
+	case RAW_FILEINFO_ALL_EAS:
+		info->all_eas.out.num_eas = info2->generic.out.num_eas;
+		if (info->all_eas.out.num_eas > 0) {
+			info->all_eas.out.eas = talloc_array(mem_ctx, 
+							       struct ea_struct,
+							       info->all_eas.out.num_eas);
+			if (!info->all_eas.out.eas) {
+				DEBUG(2,("ntvfs_map_fileinfo: no memory for %d eas\n",
+					info->all_eas.out.num_eas));
+				return NT_STATUS_NO_MEMORY;
+			}
+			for (i = 0; i < info->all_eas.out.num_eas; i++) {
+				info->all_eas.out.eas[i] = info2->generic.out.eas[i];
+				info->all_eas.out.eas[i].name.s = 
+					talloc_strdup(info->all_eas.out.eas,
+						      info2->generic.out.eas[i].name.s);
+				if (!info->all_eas.out.eas[i].name.s) {
+					DEBUG(2,("ntvfs_map_fileinfo: no memory for stream_name\n"));
+					return NT_STATUS_NO_MEMORY;
+				}
+				info->all_eas.out.eas[i].value.data = 
+					(uint8_t *)talloc_memdup(info->all_eas.out.eas,
+						info2->generic.out.eas[i].value.data,
+						info2->generic.out.eas[i].value.length);
+				if (!info->all_eas.out.eas[i].value.data) {
+					DEBUG(2,("ntvfs_map_fileinfo: no memory for stream_name\n"));
+					return NT_STATUS_NO_MEMORY;
+				}
+			}
+		}
+		return NT_STATUS_OK;
+		
+	case RAW_FILEINFO_IS_NAME_VALID:
+		return NT_STATUS_OK;
+		
+	case RAW_FILEINFO_COMPRESSION_INFO:
+	case RAW_FILEINFO_COMPRESSION_INFORMATION:
+		info->compression_info.out.compressed_size = info2->generic.out.compressed_size;
+		info->compression_info.out.format = info2->generic.out.format;
+		info->compression_info.out.unit_shift = info2->generic.out.unit_shift;
+		info->compression_info.out.chunk_shift = info2->generic.out.chunk_shift;
+		info->compression_info.out.cluster_shift = info2->generic.out.cluster_shift;
+		return NT_STATUS_OK;
+		
+	case RAW_FILEINFO_ACCESS_INFORMATION:
+		info->access_information.out.access_flags = info2->generic.out.access_flags;
+		return NT_STATUS_OK;
+		
+	case RAW_FILEINFO_MODE_INFORMATION:
+		info->mode_information.out.mode = info2->generic.out.mode;
+		return NT_STATUS_OK;
+		
+	case RAW_FILEINFO_ALIGNMENT_INFORMATION:
+		info->alignment_information.out.alignment_requirement =
+			info2->generic.out.alignment_requirement;
+		return NT_STATUS_OK;
+	case RAW_FILEINFO_UNIX_BASIC:
+#if 1
+		return NT_STATUS_INVALID_LEVEL;
+#else
+		info->unix_basic_info.out.end_of_file = info2->generic.out.end_of_file;
+		info->unix_basic_info.out.num_bytes = info2->generic.out.size;
+		info->unix_basic_info.out.status_change_time = info2->generic.out.change_time;
+		info->unix_basic_info.out.access_time = info2->generic.out.access_time;
+		info->unix_basic_info.out.change_time = info2->generic.out.change_time;
+		info->unix_basic_info.out.uid = info2->generic.out.uid;
+		info->unix_basic_info.out.gid = info2->generic.out.gid;
+		info->unix_basic_info.out.file_type = info2->generic.out.file_type;
+		info->unix_basic_info.out.dev_major = info2->generic.out.device;
+		info->unix_basic_info.out.dev_minor = info2->generic.out.device;
+		info->unix_basic_info.out.unique_id = info2->generic.out.inode;
+		info->unix_basic_info.out.permissions = info2->generic.out.permissions;
+		info->unix_basic_info.out.nlink = info2->generic.out.nlink;
+		return NT_STATUS_OK;
+#endif
+	case RAW_FILEINFO_UNIX_LINK:
+#if 1
+		return NT_STATUS_INVALID_LEVEL;
+#else
+		info->unix_link_info.out.link_dest = info2->generic.out.link_dest;
+		return NT_STATUS_OK;
+#endif
+	case RAW_FILEINFO_GENERIC:
+	case RAW_FILEINFO_SEC_DESC:
+	case RAW_FILEINFO_EA_LIST:
+	case RAW_FILEINFO_UNIX_INFO2:
+	case RAW_FILEINFO_SMB2_ALL_EAS:
+	case RAW_FILEINFO_SMB2_ALL_INFORMATION:
+		return NT_STATUS_INVALID_LEVEL;
+	case RAW_FILEINFO_NORMALIZED_NAME_INFORMATION:
+		return NT_STATUS_NOT_SUPPORTED;
+	}
+
+	return NT_STATUS_INVALID_LEVEL;
+}
+
+/* 
+   NTVFS any to fileinfo mapper
+*/
+static NTSTATUS ntvfs_map_qfileinfo_finish(struct ntvfs_module_context *ntvfs,
+				      struct ntvfs_request *req,
+				      union smb_fileinfo *info,
+				      union smb_fileinfo *info2,
+				      NTSTATUS status)
+{
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	return ntvfs_map_fileinfo(req, info, info2);
+}
+
+/*
+   NTVFS fileinfo generic to any mapper
+*/
+NTSTATUS ntvfs_map_qfileinfo(struct ntvfs_module_context *ntvfs,
+				      struct ntvfs_request *req,
+				      union smb_fileinfo *info)
+{
+	NTSTATUS status;
+	union smb_fileinfo *info2;
+
+	info2 = talloc(req, union smb_fileinfo);
+	if (info2 == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	if (info->generic.level == RAW_FILEINFO_GENERIC) {
+		return NT_STATUS_INVALID_LEVEL;
+	}
+
+	status = ntvfs_map_async_setup(ntvfs, req, info, info2,
+				       (second_stage_t)ntvfs_map_qfileinfo_finish);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	/* ask the backend for the generic info */
+	info2->generic.level = RAW_FILEINFO_GENERIC;
+	info2->generic.in.file.ntvfs= info->generic.in.file.ntvfs;
+
+	status = ntvfs->ops->qfileinfo_fn(ntvfs, req, info2);
+	return ntvfs_map_async_finish(req, status);
+}
+
+/*
+   NTVFS any to fileinfo mapper
+*/
+static NTSTATUS ntvfs_map_qpathinfo_finish(struct ntvfs_module_context *ntvfs,
+				      struct ntvfs_request *req,
+				      union smb_fileinfo *info,
+				      union smb_fileinfo *info2,
+				      NTSTATUS status)
+{
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	return ntvfs_map_fileinfo(req, info, info2);
+}
+
+/* 
+   NTVFS pathinfo generic to any mapper
+*/
+NTSTATUS ntvfs_map_qpathinfo(struct ntvfs_module_context *ntvfs,
+				      struct ntvfs_request *req,
+				      union smb_fileinfo *info)
+{
+	NTSTATUS status;
+	union smb_fileinfo *info2;
+
+	info2 = talloc(req, union smb_fileinfo);
+	if (info2 == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	if (info->generic.level == RAW_FILEINFO_GENERIC) {
+		return NT_STATUS_INVALID_LEVEL;
+	}
+
+	status = ntvfs_map_async_setup(ntvfs, req, info, info2,
+				       (second_stage_t)ntvfs_map_qpathinfo_finish);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	/* ask the backend for the generic info */
+	info2->generic.level		= RAW_FILEINFO_GENERIC;
+	info2->generic.in.file.path	= info->generic.in.file.path;
+
+	status = ntvfs->ops->qpathinfo_fn(ntvfs, req, info2);
+	return ntvfs_map_async_finish(req, status);
+}
+
+
+/* 
+   NTVFS lock generic to any mapper
+*/
+NTSTATUS ntvfs_map_lock(struct ntvfs_module_context *ntvfs,
+			struct ntvfs_request *req,
+			union smb_lock *lck)
+{
+	union smb_lock *lck2;
+	struct smb_lock_entry *locks;
+
+	lck2 = talloc(req, union smb_lock);
+	if (lck2 == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	locks = talloc_array(lck2, struct smb_lock_entry, 1);
+	if (locks == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	switch (lck->generic.level) {
+	case RAW_LOCK_LOCKX:
+		return NT_STATUS_INVALID_LEVEL;
+
+	case RAW_LOCK_LOCK:
+		lck2->generic.level = RAW_LOCK_GENERIC;
+		lck2->generic.in.file.ntvfs= lck->lock.in.file.ntvfs;
+		lck2->generic.in.mode = 0;
+		lck2->generic.in.timeout = 0;
+		lck2->generic.in.ulock_cnt = 0;
+		lck2->generic.in.lock_cnt = 1;
+		lck2->generic.in.locks = locks;
+		locks->pid = req->smbpid;
+		locks->offset = lck->lock.in.offset;
+		locks->count = lck->lock.in.count;
+		break;
+
+	case RAW_LOCK_UNLOCK:
+		lck2->generic.level = RAW_LOCK_GENERIC;
+		lck2->generic.in.file.ntvfs= lck->unlock.in.file.ntvfs;
+		lck2->generic.in.mode = 0;
+		lck2->generic.in.timeout = 0;
+		lck2->generic.in.ulock_cnt = 1;
+		lck2->generic.in.lock_cnt = 0;
+		lck2->generic.in.locks = locks;
+		locks->pid = req->smbpid;
+		locks->offset = lck->unlock.in.offset;
+		locks->count = lck->unlock.in.count;
+		break;
+
+	case RAW_LOCK_SMB2: {
+		/* this is only approximate! We need to change the
+		   generic structure to fix this properly */
+		int i;
+		bool isunlock;
+		if (lck->smb2.in.lock_count < 1) {
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+
+		lck2->generic.level = RAW_LOCK_GENERIC;
+		lck2->generic.in.file.ntvfs= lck->smb2.in.file.ntvfs;
+		lck2->generic.in.timeout = UINT32_MAX;
+		lck2->generic.in.mode = 0;
+		lck2->generic.in.lock_cnt = 0;
+		lck2->generic.in.ulock_cnt = 0;
+		lck2->generic.in.locks = talloc_zero_array(lck2, struct smb_lock_entry, 
+							   lck->smb2.in.lock_count);
+		if (lck2->generic.in.locks == NULL) {
+			return NT_STATUS_NO_MEMORY;
+		}
+		/* only the first lock gives the UNLOCK bit - see
+		   MS-SMB2 3.3.5.14 */
+		if (lck->smb2.in.locks[0].flags & SMB2_LOCK_FLAG_UNLOCK) {
+			if (lck->smb2.in.locks[0].flags & SMB2_LOCK_FLAG_FAIL_IMMEDIATELY) {
+				return NT_STATUS_INVALID_PARAMETER;
+			}
+			lck2->generic.in.ulock_cnt = lck->smb2.in.lock_count;
+			isunlock = true;
+		} else {
+			lck2->generic.in.lock_cnt = lck->smb2.in.lock_count;
+			isunlock = false;
+		}
+		for (i=0;i<lck->smb2.in.lock_count;i++) {
+			if (!isunlock &&
+			    lck->smb2.in.locks[i].flags == SMB2_LOCK_FLAG_NONE) {
+				return NT_STATUS_INVALID_PARAMETER;
+			}
+
+			if (lck->smb2.in.locks[i].flags & ~SMB2_LOCK_FLAG_ALL_MASK) {
+				return NT_STATUS_INVALID_PARAMETER;
+			}
+
+			if (isunlock && 
+			    (lck->smb2.in.locks[i].flags & 
+			     (SMB2_LOCK_FLAG_SHARED|SMB2_LOCK_FLAG_EXCLUSIVE))) {
+				return NT_STATUS_INVALID_PARAMETER;
+			}
+			if (!isunlock && 
+			    (lck->smb2.in.locks[i].flags & SMB2_LOCK_FLAG_UNLOCK)) {
+				return NT_STATUS_INVALID_PARAMETER;
+			}
+			lck2->generic.in.locks[i].pid    = req->smbpid;
+			lck2->generic.in.locks[i].offset = lck->smb2.in.locks[i].offset;
+			lck2->generic.in.locks[i].count  = lck->smb2.in.locks[i].length;
+			if (!(lck->smb2.in.locks[i].flags & SMB2_LOCK_FLAG_EXCLUSIVE)) {
+				lck2->generic.in.mode = LOCKING_ANDX_SHARED_LOCK;
+			}
+			if (lck->smb2.in.locks[i].flags & SMB2_LOCK_FLAG_FAIL_IMMEDIATELY) {
+				lck2->generic.in.timeout = 0;
+			}
+		}
+		/* initialize output value */
+		lck->smb2.out.reserved = 0;
+		break;
+	}
+
+	case RAW_LOCK_SMB2_BREAK:
+		lck2->generic.level		= RAW_LOCK_GENERIC;
+		lck2->generic.in.file.ntvfs	= lck->smb2_break.in.file.ntvfs;
+		lck2->generic.in.mode		= LOCKING_ANDX_OPLOCK_RELEASE |
+						  ((lck->smb2_break.in.oplock_level << 8) & 0xFF00);
+		lck2->generic.in.timeout	= 0;
+		lck2->generic.in.ulock_cnt	= 0;
+		lck2->generic.in.lock_cnt	= 0;
+		lck2->generic.in.locks		= NULL;
+
+		/* initialize output value */
+		lck->smb2_break.out.oplock_level= lck->smb2_break.in.oplock_level;
+		lck->smb2_break.out.reserved	= lck->smb2_break.in.reserved;
+		lck->smb2_break.out.reserved2	= lck->smb2_break.in.reserved2;
+		lck->smb2_break.out.file	= lck->smb2_break.in.file;
+		break;
+	}
+
+	/* 
+	 * we don't need to call ntvfs_map_async_setup() here,
+	 * as lock() doesn't have any output fields
+	 */
+
+	return ntvfs->ops->lock_fn(ntvfs, req, lck2);
+}
+
+
+/* 
+   NTVFS write generic to any mapper
+*/
+static NTSTATUS ntvfs_map_write_finish(struct ntvfs_module_context *ntvfs,
+				       struct ntvfs_request *req,
+				       union smb_write *wr, 
+				       union smb_write *wr2, 
+				       NTSTATUS status)
+{
+	union smb_lock *lck;
+	union smb_close *cl;
+	unsigned int state;
+
+	if (NT_STATUS_IS_ERR(status)) {
+		return status;
+	}
+
+	switch (wr->generic.level) {
+	case RAW_WRITE_WRITE:
+		wr->write.out.nwritten    = wr2->generic.out.nwritten;
+		break;
+
+	case RAW_WRITE_WRITEUNLOCK:
+		wr->writeunlock.out.nwritten = wr2->generic.out.nwritten;
+
+		lck = talloc(wr2, union smb_lock);
+		if (lck == NULL) {
+			return NT_STATUS_NO_MEMORY;
+		}
+
+		lck->unlock.level		= RAW_LOCK_UNLOCK;
+		lck->unlock.in.file.ntvfs	= wr->writeunlock.in.file.ntvfs;
+		lck->unlock.in.count		= wr->writeunlock.in.count;
+		lck->unlock.in.offset		= wr->writeunlock.in.offset;
+
+		if (lck->unlock.in.count != 0) {
+			/* do the lock sync for now */
+			state = req->async_states->state;
+			req->async_states->state &= ~NTVFS_ASYNC_STATE_MAY_ASYNC;
+			status = ntvfs->ops->lock_fn(ntvfs, req, lck);
+			req->async_states->state = state;
+		}
+		break;
+
+	case RAW_WRITE_WRITECLOSE:
+		wr->writeclose.out.nwritten    = wr2->generic.out.nwritten;
+
+		cl = talloc(wr2, union smb_close);
+		if (cl == NULL) {
+			return NT_STATUS_NO_MEMORY;
+		}
+
+		cl->close.level		= RAW_CLOSE_CLOSE;
+		cl->close.in.file.ntvfs	= wr->writeclose.in.file.ntvfs;
+		cl->close.in.write_time	= wr->writeclose.in.mtime;
+
+		if (wr2->generic.in.count != 0) {
+			/* do the close sync for now */
+			state = req->async_states->state;
+			req->async_states->state &= ~NTVFS_ASYNC_STATE_MAY_ASYNC;
+			status = ntvfs->ops->close_fn(ntvfs, req, cl);
+			req->async_states->state = state;
+		}
+		break;
+
+	case RAW_WRITE_SPLWRITE:
+		break;
+
+	case RAW_WRITE_SMB2:
+		wr->smb2.out._pad	= 0;
+		wr->smb2.out.nwritten	= wr2->generic.out.nwritten;
+		wr->smb2.out.unknown1	= 0;
+		break;
+
+	default:
+		return NT_STATUS_INVALID_LEVEL;
+	}
+
+	return status;
+}
+
+
+/* 
+   NTVFS write generic to any mapper
+*/
+NTSTATUS ntvfs_map_write(struct ntvfs_module_context *ntvfs,
+				  struct ntvfs_request *req,
+				  union smb_write *wr)
+{
+	union smb_write *wr2;
+	NTSTATUS status;
+
+	wr2 = talloc(req, union smb_write);
+	if (wr2 == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	status = ntvfs_map_async_setup(ntvfs, req, wr, wr2, 
+				       (second_stage_t)ntvfs_map_write_finish);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	wr2->writex.level = RAW_WRITE_GENERIC;
+
+	switch (wr->generic.level) {
+	case RAW_WRITE_WRITEX:
+		status = NT_STATUS_INVALID_LEVEL;
+		break;
+
+	case RAW_WRITE_WRITE:
+		wr2->writex.in.file.ntvfs= wr->write.in.file.ntvfs;
+		wr2->writex.in.offset    = wr->write.in.offset;
+		wr2->writex.in.wmode     = 0;
+		wr2->writex.in.remaining = wr->write.in.remaining;
+		wr2->writex.in.count     = wr->write.in.count;
+		wr2->writex.in.data      = wr->write.in.data;
+		status = ntvfs->ops->write_fn(ntvfs, req, wr2);
+		break;
+
+	case RAW_WRITE_WRITEUNLOCK:
+		wr2->writex.in.file.ntvfs= wr->writeunlock.in.file.ntvfs;
+		wr2->writex.in.offset    = wr->writeunlock.in.offset;
+		wr2->writex.in.wmode     = 0;
+		wr2->writex.in.remaining = wr->writeunlock.in.remaining;
+		wr2->writex.in.count     = wr->writeunlock.in.count;
+		wr2->writex.in.data      = wr->writeunlock.in.data;
+		status = ntvfs->ops->write_fn(ntvfs, req, wr2);
+		break;
+
+	case RAW_WRITE_WRITECLOSE:
+		wr2->writex.in.file.ntvfs= wr->writeclose.in.file.ntvfs;
+		wr2->writex.in.offset    = wr->writeclose.in.offset;
+		wr2->writex.in.wmode     = 0;
+		wr2->writex.in.remaining = 0;
+		wr2->writex.in.count     = wr->writeclose.in.count;
+		wr2->writex.in.data      = wr->writeclose.in.data;
+		status = ntvfs->ops->write_fn(ntvfs, req, wr2);
+		break;
+
+	case RAW_WRITE_SPLWRITE:
+		wr2->writex.in.file.ntvfs= wr->splwrite.in.file.ntvfs;
+		wr2->writex.in.offset    = 0;
+		wr2->writex.in.wmode     = 0;
+		wr2->writex.in.remaining = 0;
+		wr2->writex.in.count     = wr->splwrite.in.count;
+		wr2->writex.in.data      = wr->splwrite.in.data;
+		status = ntvfs->ops->write_fn(ntvfs, req, wr2);
+		break;
+
+	case RAW_WRITE_SMB2:
+		wr2->writex.in.file.ntvfs= wr->smb2.in.file.ntvfs;
+		wr2->writex.in.offset    = wr->smb2.in.offset;
+		wr2->writex.in.wmode     = 0;
+		wr2->writex.in.remaining = 0;
+		wr2->writex.in.count     = wr->smb2.in.data.length;
+		wr2->writex.in.data      = wr->smb2.in.data.data;
+		status = ntvfs->ops->write_fn(ntvfs, req, wr2);
+	}
+
+	return ntvfs_map_async_finish(req, status);
+}
+
+
+/* 
+   NTVFS read generic to any mapper - finish the out mapping
+*/
+static NTSTATUS ntvfs_map_read_finish(struct ntvfs_module_context *ntvfs,
+				      struct ntvfs_request *req, 
+				      union smb_read *rd, 
+				      union smb_read *rd2,
+				      NTSTATUS status)
+{
+	switch (rd->generic.level) {
+	case RAW_READ_READ:
+		rd->read.out.nread	= rd2->generic.out.nread;
+		break;
+	case RAW_READ_READBRAW:
+		rd->readbraw.out.nread	= rd2->generic.out.nread;
+		break;
+	case RAW_READ_LOCKREAD:
+		rd->lockread.out.nread	= rd2->generic.out.nread;
+		break;
+	case RAW_READ_SMB2:
+		rd->smb2.out.data.length= rd2->generic.out.nread;
+		rd->smb2.out.remaining	= 0;
+		rd->smb2.out.reserved	= 0;
+		break;
+	default:
+		return NT_STATUS_INVALID_LEVEL;
+	}
+
+	return status;
+}
+
+/* 
+   NTVFS read* to readx mapper
+*/
+NTSTATUS ntvfs_map_read(struct ntvfs_module_context *ntvfs,
+				 struct ntvfs_request *req,
+				 union smb_read *rd)
+{
+	union smb_read *rd2;
+	union smb_lock *lck;
+	NTSTATUS status;
+	unsigned int state;
+
+	rd2 = talloc(req, union smb_read);
+	if (rd2 == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	status = ntvfs_map_async_setup(ntvfs, req, rd, rd2, 
+				       (second_stage_t)ntvfs_map_read_finish);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	rd2->readx.level = RAW_READ_READX;
+	rd2->readx.in.read_for_execute = false;
+
+	switch (rd->generic.level) {
+	case RAW_READ_READX:
+		status = NT_STATUS_INVALID_LEVEL;
+		break;
+
+	case RAW_READ_READ:
+		rd2->readx.in.file.ntvfs= rd->read.in.file.ntvfs;
+		rd2->readx.in.offset    = rd->read.in.offset;
+		rd2->readx.in.mincnt    = rd->read.in.count;
+		rd2->readx.in.maxcnt    = rd->read.in.count;
+		rd2->readx.in.remaining = rd->read.in.remaining;
+		rd2->readx.out.data     = rd->read.out.data;
+		status = ntvfs->ops->read_fn(ntvfs, req, rd2);
+		break;
+
+	case RAW_READ_READBRAW:
+		rd2->readx.in.file.ntvfs= rd->readbraw.in.file.ntvfs;
+		rd2->readx.in.offset    = rd->readbraw.in.offset;
+		rd2->readx.in.mincnt    = rd->readbraw.in.mincnt;
+		rd2->readx.in.maxcnt    = rd->readbraw.in.maxcnt;
+		rd2->readx.in.remaining = 0;
+		rd2->readx.out.data     = rd->readbraw.out.data;
+		status = ntvfs->ops->read_fn(ntvfs, req, rd2);
+		break;
+
+	case RAW_READ_LOCKREAD:
+		/* do the initial lock sync for now */
+		state = req->async_states->state;
+		req->async_states->state &= ~NTVFS_ASYNC_STATE_MAY_ASYNC;
+
+		lck = talloc(rd2, union smb_lock);
+		if (lck == NULL) {
+			status = NT_STATUS_NO_MEMORY;
+			goto done;
+		}
+		lck->lock.level		= RAW_LOCK_LOCK;
+		lck->lock.in.file.ntvfs	= rd->lockread.in.file.ntvfs;
+		lck->lock.in.count	= rd->lockread.in.count;
+		lck->lock.in.offset	= rd->lockread.in.offset;
+		status = ntvfs->ops->lock_fn(ntvfs, req, lck);
+		req->async_states->state = state;
+
+		rd2->readx.in.file.ntvfs= rd->lockread.in.file.ntvfs;
+		rd2->readx.in.offset    = rd->lockread.in.offset;
+		rd2->readx.in.mincnt    = rd->lockread.in.count;
+		rd2->readx.in.maxcnt    = rd->lockread.in.count;
+		rd2->readx.in.remaining = rd->lockread.in.remaining;
+		rd2->readx.out.data     = rd->lockread.out.data;
+
+		if (NT_STATUS_IS_OK(status)) {
+			status = ntvfs->ops->read_fn(ntvfs, req, rd2);
+		}
+		break;
+
+	case RAW_READ_SMB2:
+		rd2->readx.in.file.ntvfs= rd->smb2.in.file.ntvfs;
+		rd2->readx.in.offset    = rd->smb2.in.offset;
+		rd2->readx.in.mincnt    = rd->smb2.in.min_count;
+		rd2->readx.in.maxcnt    = rd->smb2.in.length;
+		rd2->readx.in.remaining = 0;
+		rd2->readx.out.data     = rd->smb2.out.data.data;
+		status = ntvfs->ops->read_fn(ntvfs, req, rd2);
+		break;
+	}
+
+done:
+	return ntvfs_map_async_finish(req, status);
+}
+
+
+/* 
+   NTVFS close generic to any mapper
+*/
+static NTSTATUS ntvfs_map_close_finish(struct ntvfs_module_context *ntvfs,
+					struct ntvfs_request *req,
+					union smb_close *cl, 
+					union smb_close *cl2, 
+					NTSTATUS status)
+{
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	switch (cl->generic.level) {
+	case RAW_CLOSE_SMB2:
+		cl->smb2.out.flags        = cl2->generic.out.flags;
+		cl->smb2.out._pad         = 0;
+		cl->smb2.out.create_time  = cl2->generic.out.create_time;
+		cl->smb2.out.access_time  = cl2->generic.out.access_time;
+		cl->smb2.out.write_time   = cl2->generic.out.write_time;
+		cl->smb2.out.change_time  = cl2->generic.out.change_time;
+		cl->smb2.out.alloc_size   = cl2->generic.out.alloc_size;
+		cl->smb2.out.size         = cl2->generic.out.size;
+		cl->smb2.out.file_attr    = cl2->generic.out.file_attr;
+		break;
+	default:
+		break;
+	}
+
+	return status;
+}
+
+/* 
+   NTVFS close generic to any mapper
+*/
+NTSTATUS ntvfs_map_close(struct ntvfs_module_context *ntvfs,
+				  struct ntvfs_request *req,
+				  union smb_close *cl)
+{
+	union smb_close *cl2;
+	NTSTATUS status;
+
+	cl2 = talloc(req, union smb_close);
+	if (cl2 == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	switch (cl->generic.level) {
+	case RAW_CLOSE_GENERIC:
+		return NT_STATUS_INVALID_LEVEL;
+
+	case RAW_CLOSE_CLOSE:
+		cl2->generic.level		= RAW_CLOSE_GENERIC;
+		cl2->generic.in.file		= cl->close.in.file;
+		cl2->generic.in.write_time	= cl->close.in.write_time;
+		cl2->generic.in.flags		= 0;
+		break;
+
+	case RAW_CLOSE_SPLCLOSE:
+		cl2->generic.level		= RAW_CLOSE_GENERIC;
+		cl2->generic.in.file		= cl->splclose.in.file;
+		cl2->generic.in.write_time	= 0;
+		cl2->generic.in.flags		= 0;
+		break;
+
+	case RAW_CLOSE_SMB2:
+		cl2->generic.level		= RAW_CLOSE_GENERIC;
+		cl2->generic.in.file		= cl->smb2.in.file;
+		cl2->generic.in.write_time	= 0;
+		cl2->generic.in.flags		= cl->smb2.in.flags;
+		break;
+	}
+
+	status = ntvfs_map_async_setup(ntvfs, req, cl, cl2, 
+				       (second_stage_t)ntvfs_map_close_finish);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	status = ntvfs->ops->close_fn(ntvfs, req, cl2);
+
+	return ntvfs_map_async_finish(req, status);
+}
+
+/* 
+   NTVFS notify generic to any mapper
+*/
+static NTSTATUS ntvfs_map_notify_finish(struct ntvfs_module_context *ntvfs,
+					struct ntvfs_request *req,
+					union smb_notify *nt, 
+					union smb_notify *nt2, 
+					NTSTATUS status)
+{
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	switch (nt->nttrans.level) {
+	case RAW_NOTIFY_SMB2:
+		if (nt2->nttrans.out.num_changes == 0) {
+			return NT_STATUS_NOTIFY_ENUM_DIR;
+		}
+		nt->smb2.out.num_changes	= nt2->nttrans.out.num_changes;
+		nt->smb2.out.changes		= talloc_steal(req, nt2->nttrans.out.changes);
+		break;
+
+	default:
+		return NT_STATUS_INVALID_LEVEL;
+	}
+
+	return status;
+}
+
+
+/* 
+   NTVFS notify generic to any mapper
+*/
+NTSTATUS ntvfs_map_notify(struct ntvfs_module_context *ntvfs,
+				   struct ntvfs_request *req,
+				   union smb_notify *nt)
+{
+	union smb_notify *nt2;
+	NTSTATUS status;
+
+	nt2 = talloc(req, union smb_notify);
+	NT_STATUS_HAVE_NO_MEMORY(nt2);
+
+	status = ntvfs_map_async_setup(ntvfs, req, nt, nt2, 
+				       (second_stage_t)ntvfs_map_notify_finish);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	nt2->nttrans.level = RAW_NOTIFY_NTTRANS;
+
+	switch (nt->nttrans.level) {
+	case RAW_NOTIFY_NTTRANS:
+		status = NT_STATUS_INVALID_LEVEL;
+		break;
+
+	case RAW_NOTIFY_SMB2:
+		nt2->nttrans.in.file.ntvfs		= nt->smb2.in.file.ntvfs;
+		nt2->nttrans.in.buffer_size		= nt->smb2.in.buffer_size;
+		nt2->nttrans.in.completion_filter	= nt->smb2.in.completion_filter;
+		nt2->nttrans.in.recursive		= nt->smb2.in.recursive;
+		status = ntvfs->ops->notify_fn(ntvfs, req, nt2);
+		break;
+	}
+
+	return ntvfs_map_async_finish(req, status);
+}
diff --git a/source4/ntvfs/ntvfs_interface.c b/source4/ntvfs/ntvfs_interface.c
new file mode 100644
index 0000000..a9e3101
--- /dev/null
+++ b/source4/ntvfs/ntvfs_interface.c
@@ -0,0 +1,702 @@
+/* 
+   Unix SMB/CIFS implementation.
+   NTVFS interface functions
+
+   Copyright (C) Stefan (metze) Metzmacher 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "ntvfs/ntvfs.h"
+#include "lib/tsocket/tsocket.h"
+
+/* connect/disconnect */
+NTSTATUS ntvfs_connect(struct ntvfs_request *req, union smb_tcon *tcon)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->connect_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->connect_fn(ntvfs, req, tcon);
+}
+
+NTSTATUS ntvfs_disconnect(struct ntvfs_context *ntvfs_ctx)
+{
+	struct ntvfs_module_context *ntvfs;
+	if (ntvfs_ctx == NULL) {
+		return NT_STATUS_INVALID_CONNECTION;
+	}
+	ntvfs = ntvfs_ctx->modules;
+	if (!ntvfs->ops->disconnect_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->disconnect_fn(ntvfs);
+}
+
+/* async setup - called by a backend that wants to setup any state for
+   a async request */
+NTSTATUS ntvfs_async_setup(struct ntvfs_request *req, void *private_data)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->async_setup_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->async_setup_fn(ntvfs, req, private_data);
+}
+
+/* filesystem operations */
+NTSTATUS ntvfs_fsinfo(struct ntvfs_request *req, union smb_fsinfo *fs)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->fsinfo_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->fsinfo_fn(ntvfs, req, fs);
+}
+
+/* path operations */
+NTSTATUS ntvfs_unlink(struct ntvfs_request *req, union smb_unlink *unl)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->unlink_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->unlink_fn(ntvfs, req, unl);
+}
+
+NTSTATUS ntvfs_chkpath(struct ntvfs_request *req, union smb_chkpath *cp)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->chkpath_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->chkpath_fn(ntvfs, req, cp);
+}
+
+NTSTATUS ntvfs_qpathinfo(struct ntvfs_request *req, union smb_fileinfo *st)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->qpathinfo_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->qpathinfo_fn(ntvfs, req, st);
+}
+
+NTSTATUS ntvfs_setpathinfo(struct ntvfs_request *req, union smb_setfileinfo *st)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->setpathinfo_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->setpathinfo_fn(ntvfs, req, st);
+}
+
+NTSTATUS ntvfs_open(struct ntvfs_request *req, union smb_open *oi)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->open_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->open_fn(ntvfs, req, oi);
+}
+
+NTSTATUS ntvfs_mkdir(struct ntvfs_request *req, union smb_mkdir *md)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->mkdir_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->mkdir_fn(ntvfs, req, md);
+}
+
+NTSTATUS ntvfs_rmdir(struct ntvfs_request *req, struct smb_rmdir *rd)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->rmdir_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->rmdir_fn(ntvfs, req, rd);
+}
+
+NTSTATUS ntvfs_rename(struct ntvfs_request *req, union smb_rename *ren)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->rename_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->rename_fn(ntvfs, req, ren);
+}
+
+NTSTATUS ntvfs_copy(struct ntvfs_request *req, struct smb_copy *cp)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->copy_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->copy_fn(ntvfs, req, cp);
+}
+
+/* directory search */
+NTSTATUS ntvfs_search_first(struct ntvfs_request *req, union smb_search_first *io, void *private_data,
+				     bool ntvfs_callback(void *private_data, const union smb_search_data *file))
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->search_first_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->search_first_fn(ntvfs, req, io, private_data, ntvfs_callback);
+}
+
+NTSTATUS ntvfs_search_next(struct ntvfs_request *req, union smb_search_next *io, void *private_data,
+				    bool ntvfs_callback(void *private_data, const union smb_search_data *file))
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->search_next_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->search_next_fn(ntvfs, req, io, private_data, ntvfs_callback);
+}
+
+NTSTATUS ntvfs_search_close(struct ntvfs_request *req, union smb_search_close *io)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->search_close_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->search_close_fn(ntvfs, req, io);
+}
+
+/* operations on open files */
+NTSTATUS ntvfs_ioctl(struct ntvfs_request *req, union smb_ioctl *io)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->ioctl_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->ioctl_fn(ntvfs, req, io);
+}
+
+NTSTATUS ntvfs_read(struct ntvfs_request *req, union smb_read *io)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->read_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->read_fn(ntvfs, req, io);
+}
+
+NTSTATUS ntvfs_write(struct ntvfs_request *req, union smb_write *io)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->write_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->write_fn(ntvfs, req, io);
+}
+
+NTSTATUS ntvfs_seek(struct ntvfs_request *req, union smb_seek *io)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->seek_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->seek_fn(ntvfs, req, io);
+}
+
+NTSTATUS ntvfs_flush(struct ntvfs_request *req,
+			      union smb_flush *flush)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->flush_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->flush_fn(ntvfs, req, flush);
+}
+
+NTSTATUS ntvfs_lock(struct ntvfs_request *req, union smb_lock *lck)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->lock_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->lock_fn(ntvfs, req, lck);
+}
+
+NTSTATUS ntvfs_qfileinfo(struct ntvfs_request *req, union smb_fileinfo *info)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->qfileinfo_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->qfileinfo_fn(ntvfs, req, info);
+}
+
+NTSTATUS ntvfs_setfileinfo(struct ntvfs_request *req, union smb_setfileinfo *info)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->setfileinfo_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->setfileinfo_fn(ntvfs, req, info);
+}
+
+NTSTATUS ntvfs_close(struct ntvfs_request *req, union smb_close *io)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->close_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->close_fn(ntvfs, req, io);
+}
+
+/* trans interface - used by IPC backend for pipes and RAP calls */
+NTSTATUS ntvfs_trans(struct ntvfs_request *req, struct smb_trans2 *trans)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->trans_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->trans_fn(ntvfs, req, trans);
+}
+
+/* trans2 interface - only used by CIFS backend to prover complete passthru for testing */
+NTSTATUS ntvfs_trans2(struct ntvfs_request *req, struct smb_trans2 *trans2)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->trans2_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->trans2_fn(ntvfs, req, trans2);
+}
+
+/* printing specific operations */
+NTSTATUS ntvfs_lpq(struct ntvfs_request *req, union smb_lpq *lpq)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->lpq_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->lpq_fn(ntvfs, req, lpq);
+}
+
+/* logoff - called when a vuid is closed */
+NTSTATUS ntvfs_logoff(struct ntvfs_request *req)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->logoff_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->logoff_fn(ntvfs, req);
+}
+
+NTSTATUS ntvfs_exit(struct ntvfs_request *req)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->exit_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->exit_fn(ntvfs, req);
+}
+
+/*
+  change notify request
+*/
+NTSTATUS ntvfs_notify(struct ntvfs_request *req, union smb_notify *info)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->notify_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->notify_fn(ntvfs, req, info);
+}
+
+/*
+  cancel an outstanding async request
+*/
+NTSTATUS ntvfs_cancel(struct ntvfs_request *req)
+{
+	struct ntvfs_module_context *ntvfs = req->ctx->modules;
+	if (!ntvfs->ops->cancel_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ops->cancel_fn(ntvfs, req);
+}
+
+/* initial setup */
+NTSTATUS ntvfs_next_connect(struct ntvfs_module_context *ntvfs, 
+				     struct ntvfs_request *req,
+				     union smb_tcon *tcon)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->connect_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->connect_fn(ntvfs->next, req, tcon);
+}
+
+NTSTATUS ntvfs_next_disconnect(struct ntvfs_module_context *ntvfs)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->disconnect_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->disconnect_fn(ntvfs->next);
+}
+
+/* async_setup - called when setting up for a async request */
+NTSTATUS ntvfs_next_async_setup(struct ntvfs_module_context *ntvfs, 
+					 struct ntvfs_request *req, 
+					 void *private_data)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->async_setup_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->async_setup_fn(ntvfs->next, req, private_data);
+}
+
+/* filesystem operations */
+NTSTATUS ntvfs_next_fsinfo(struct ntvfs_module_context *ntvfs, 
+				    struct ntvfs_request *req,
+				    union smb_fsinfo *fs)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->fsinfo_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->fsinfo_fn(ntvfs->next, req, fs);
+}
+
+/* path operations */
+NTSTATUS ntvfs_next_unlink(struct ntvfs_module_context *ntvfs, 
+				    struct ntvfs_request *req,
+				    union smb_unlink *unl)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->unlink_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->unlink_fn(ntvfs->next, req, unl);
+}
+
+NTSTATUS ntvfs_next_chkpath(struct ntvfs_module_context *ntvfs, 
+				     struct ntvfs_request *req,
+				     union smb_chkpath *cp)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->chkpath_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->chkpath_fn(ntvfs->next, req, cp);
+}
+
+NTSTATUS ntvfs_next_qpathinfo(struct ntvfs_module_context *ntvfs, 
+				       struct ntvfs_request *req,
+				       union smb_fileinfo *st)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->qpathinfo_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->qpathinfo_fn(ntvfs->next, req, st);
+}
+
+NTSTATUS ntvfs_next_setpathinfo(struct ntvfs_module_context *ntvfs, 
+					 struct ntvfs_request *req,
+					 union smb_setfileinfo *st)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->setpathinfo_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->setpathinfo_fn(ntvfs->next, req, st);
+}
+
+NTSTATUS ntvfs_next_mkdir(struct ntvfs_module_context *ntvfs, 
+				   struct ntvfs_request *req,
+				   union smb_mkdir *md)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->mkdir_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->mkdir_fn(ntvfs->next, req, md);
+}
+
+NTSTATUS ntvfs_next_rmdir(struct ntvfs_module_context *ntvfs, 
+				   struct ntvfs_request *req,
+				   struct smb_rmdir *rd)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->rmdir_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->rmdir_fn(ntvfs->next, req, rd);
+}
+
+NTSTATUS ntvfs_next_rename(struct ntvfs_module_context *ntvfs, 
+				    struct ntvfs_request *req,
+				    union smb_rename *ren)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->rename_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->rename_fn(ntvfs->next, req, ren);
+}
+
+NTSTATUS ntvfs_next_copy(struct ntvfs_module_context *ntvfs, 
+				  struct ntvfs_request *req,
+				  struct smb_copy *cp)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->copy_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->copy_fn(ntvfs->next, req, cp);
+}
+
+NTSTATUS ntvfs_next_open(struct ntvfs_module_context *ntvfs, 
+				  struct ntvfs_request *req,
+				  union smb_open *oi)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->open_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->open_fn(ntvfs->next, req, oi);
+}
+
+
+/* directory search */
+NTSTATUS ntvfs_next_search_first(struct ntvfs_module_context *ntvfs, 
+					  struct ntvfs_request *req,
+					  union smb_search_first *io, void *private_data,
+					  bool (*callback)(void *private_data, const union smb_search_data *file))
+{
+	if (!ntvfs->next || !ntvfs->next->ops->search_first_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->search_first_fn(ntvfs->next, req, io, private_data, callback);
+}
+
+NTSTATUS ntvfs_next_search_next(struct ntvfs_module_context *ntvfs, 
+					 struct ntvfs_request *req,
+					 union smb_search_next *io, void *private_data,
+					 bool (*callback)(void *private_data, const union smb_search_data *file))
+{
+	if (!ntvfs->next || !ntvfs->next->ops->search_next_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->search_next_fn(ntvfs->next, req, io, private_data, callback);
+}
+
+NTSTATUS ntvfs_next_search_close(struct ntvfs_module_context *ntvfs, 
+					  struct ntvfs_request *req,
+					  union smb_search_close *io)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->search_close_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->search_close_fn(ntvfs->next, req, io);
+}
+
+/* operations on open files */
+NTSTATUS ntvfs_next_ioctl(struct ntvfs_module_context *ntvfs, 
+				   struct ntvfs_request *req,
+				   union smb_ioctl *io)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->ioctl_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->ioctl_fn(ntvfs->next, req, io);
+}
+
+NTSTATUS ntvfs_next_read(struct ntvfs_module_context *ntvfs, 
+				  struct ntvfs_request *req,
+				  union smb_read *io)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->read_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->read_fn(ntvfs->next, req, io);
+}
+
+NTSTATUS ntvfs_next_write(struct ntvfs_module_context *ntvfs, 
+				   struct ntvfs_request *req,
+				   union smb_write *io)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->write_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->write_fn(ntvfs->next, req, io);
+}
+
+NTSTATUS ntvfs_next_seek(struct ntvfs_module_context *ntvfs, 
+				  struct ntvfs_request *req,
+				  union smb_seek *io)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->seek_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->seek_fn(ntvfs->next, req, io);
+}
+
+NTSTATUS ntvfs_next_flush(struct ntvfs_module_context *ntvfs, 
+				   struct ntvfs_request *req,
+				   union smb_flush *flush)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->flush_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->flush_fn(ntvfs->next, req, flush);
+}
+
+NTSTATUS ntvfs_next_lock(struct ntvfs_module_context *ntvfs, 
+				  struct ntvfs_request *req,
+				  union smb_lock *lck)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->lock_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->lock_fn(ntvfs->next, req, lck);
+}
+
+NTSTATUS ntvfs_next_qfileinfo(struct ntvfs_module_context *ntvfs, 
+				       struct ntvfs_request *req,
+				       union smb_fileinfo *info)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->qfileinfo_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->qfileinfo_fn(ntvfs->next, req, info);
+}
+
+NTSTATUS ntvfs_next_setfileinfo(struct ntvfs_module_context *ntvfs, 
+					 struct ntvfs_request *req,
+					 union smb_setfileinfo *info)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->setfileinfo_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->setfileinfo_fn(ntvfs->next, req, info);
+}
+
+NTSTATUS ntvfs_next_close(struct ntvfs_module_context *ntvfs, 
+				   struct ntvfs_request *req,
+				   union smb_close *io)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->close_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->close_fn(ntvfs->next, req, io);
+}
+
+/* trans interface - used by IPC backend for pipes and RAP calls */
+NTSTATUS ntvfs_next_trans(struct ntvfs_module_context *ntvfs, 
+				   struct ntvfs_request *req,
+				   struct smb_trans2 *trans)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->trans_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->trans_fn(ntvfs->next, req, trans);
+}
+
+/*
+  change notify request
+*/
+NTSTATUS ntvfs_next_notify(struct ntvfs_module_context *ntvfs,
+				    struct ntvfs_request *req,
+				    union smb_notify *info)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->notify_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->notify_fn(ntvfs->next, req, info);
+}
+
+/* cancel - called to cancel an outstanding async request */
+NTSTATUS ntvfs_next_cancel(struct ntvfs_module_context *ntvfs, 
+				    struct ntvfs_request *req)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->cancel_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->cancel_fn(ntvfs->next, req);
+}
+
+/* printing specific operations */
+NTSTATUS ntvfs_next_lpq(struct ntvfs_module_context *ntvfs, 
+				 struct ntvfs_request *req,
+				 union smb_lpq *lpq)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->lpq_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->lpq_fn(ntvfs->next, req, lpq);
+}
+
+
+/* logoff - called when a vuid is closed */
+NTSTATUS ntvfs_next_logoff(struct ntvfs_module_context *ntvfs, 
+				    struct ntvfs_request *req)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->logoff_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->logoff_fn(ntvfs->next, req);
+}
+
+NTSTATUS ntvfs_next_exit(struct ntvfs_module_context *ntvfs, 
+				  struct ntvfs_request *req)
+{
+	if (!ntvfs->next || !ntvfs->next->ops->exit_fn) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->next->ops->exit_fn(ntvfs->next, req);
+}
+
+/* client connection callback */
+NTSTATUS ntvfs_set_addresses(struct ntvfs_context *ntvfs,
+			     const struct tsocket_address *local_address,
+			     const struct tsocket_address *remote_address)
+{
+	ntvfs->client.local_address = tsocket_address_copy(local_address, ntvfs);
+	NT_STATUS_HAVE_NO_MEMORY(ntvfs->client.local_address);
+
+	ntvfs->client.remote_address = tsocket_address_copy(remote_address, ntvfs);
+	NT_STATUS_HAVE_NO_MEMORY(ntvfs->client.remote_address);
+
+	return NT_STATUS_OK;
+}
+
+const struct tsocket_address *ntvfs_get_local_address(struct ntvfs_module_context *ntvfs)
+{
+	return ntvfs->ctx->client.local_address;
+}
+
+const struct tsocket_address *ntvfs_get_remote_address(struct ntvfs_module_context *ntvfs)
+{
+	return ntvfs->ctx->client.remote_address;
+}
+
+/* oplock helpers */
+NTSTATUS ntvfs_set_oplock_handler(struct ntvfs_context *ntvfs,
+					   NTSTATUS (*handler)(void *private_data, struct ntvfs_handle *handle, uint8_t level),
+					   void *private_data)
+{
+	ntvfs->oplock.handler		= handler;
+	ntvfs->oplock.private_data	= private_data;
+	return NT_STATUS_OK;
+}
+
+NTSTATUS ntvfs_send_oplock_break(struct ntvfs_module_context *ntvfs,
+					  struct ntvfs_handle *handle, uint8_t level)
+{
+	if (!ntvfs->ctx->oplock.handler) {
+		return NT_STATUS_OK;
+	}
+
+	return ntvfs->ctx->oplock.handler(ntvfs->ctx->oplock.private_data, handle, level);
+}
+
diff --git a/source4/ntvfs/ntvfs_util.c b/source4/ntvfs/ntvfs_util.c
new file mode 100644
index 0000000..2888ef4
--- /dev/null
+++ b/source4/ntvfs/ntvfs_util.c
@@ -0,0 +1,197 @@
+/* 
+   Unix SMB/CIFS implementation.
+   NTVFS utility code
+   Copyright (C) Stefan Metzmacher 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/*
+  this implements common utility functions that many NTVFS backends may wish to use
+*/
+
+#include "includes.h"
+#include "../lib/util/dlinklist.h"
+#include "ntvfs/ntvfs.h"
+
+
+struct ntvfs_request *ntvfs_request_create(struct ntvfs_context *ctx, TALLOC_CTX *mem_ctx,
+						    struct auth_session_info *session_info,
+						    uint16_t smbpid,
+						    struct timeval request_time,
+						    void *private_data,
+						    void (*send_fn)(struct ntvfs_request *),
+						    uint32_t state)
+{
+	struct ntvfs_request *req;
+	struct ntvfs_async_state *async;
+
+	req = talloc(mem_ctx, struct ntvfs_request);
+	if (!req) return NULL;
+	req->ctx			= ctx;
+	req->async_states		= NULL;
+	req->session_info		= session_info;
+	req->smbpid			= smbpid;
+	req->client_caps		= ctx->client_caps;
+	req->statistics.request_time	= request_time;
+
+	async = talloc(req, struct ntvfs_async_state);
+	if (!async) goto failed;
+
+	async->state		= state;
+	async->private_data	= private_data;
+	async->send_fn		= send_fn;
+	async->status		= NT_STATUS_INTERNAL_ERROR;
+	async->ntvfs		= NULL;
+
+	DLIST_ADD(req->async_states, async);
+
+	return req;
+failed:
+	talloc_free(req);
+	return NULL;
+}
+
+NTSTATUS ntvfs_async_state_push(struct ntvfs_module_context *ntvfs,
+					 struct ntvfs_request *req,
+					 void *private_data,
+					 void (*send_fn)(struct ntvfs_request *))
+{
+	struct ntvfs_async_state *async;
+
+	async = talloc(req, struct ntvfs_async_state);
+	NT_STATUS_HAVE_NO_MEMORY(async);
+
+	async->state		= req->async_states->state;
+	async->private_data	= private_data;
+	async->send_fn		= send_fn;
+	async->status		= NT_STATUS_INTERNAL_ERROR;
+
+	async->ntvfs		= ntvfs;
+
+	DLIST_ADD(req->async_states, async);
+
+	return NT_STATUS_OK;
+}
+
+void ntvfs_async_state_pop(struct ntvfs_request *req)
+{
+	struct ntvfs_async_state *async;
+
+	async = req->async_states;
+
+	DLIST_REMOVE(req->async_states, async);
+
+	req->async_states->state	= async->state;
+	req->async_states->status	= async->status;
+
+	talloc_free(async);
+}
+
+NTSTATUS ntvfs_handle_new(struct ntvfs_module_context *ntvfs,
+				   struct ntvfs_request *req,
+				   struct ntvfs_handle **h)
+{
+	if (!ntvfs->ctx->handles.create_new) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return ntvfs->ctx->handles.create_new(ntvfs->ctx->handles.private_data, req, h);
+}
+
+NTSTATUS ntvfs_handle_set_backend_data(struct ntvfs_handle *h,
+						struct ntvfs_module_context *ntvfs,
+						TALLOC_CTX *private_data)
+{
+	struct ntvfs_handle_data *d;
+	bool first_time = h->backend_data?false:true;
+
+	for (d=h->backend_data; d; d = d->next) {
+		if (d->owner != ntvfs) continue;
+		d->private_data = talloc_steal(d, private_data);
+		return NT_STATUS_OK;
+	}
+
+	d = talloc(h, struct ntvfs_handle_data);
+	NT_STATUS_HAVE_NO_MEMORY(d);
+	d->owner = ntvfs;
+	d->private_data = talloc_steal(d, private_data);
+
+	DLIST_ADD(h->backend_data, d);
+
+	if (first_time) {
+		NTSTATUS status;
+		status = h->ctx->handles.make_valid(h->ctx->handles.private_data, h);
+		NT_STATUS_NOT_OK_RETURN(status);
+	}
+
+	return NT_STATUS_OK;
+}
+
+void *ntvfs_handle_get_backend_data(struct ntvfs_handle *h,
+					     struct ntvfs_module_context *ntvfs)
+{
+	struct ntvfs_handle_data *d;
+
+	for (d=h->backend_data; d; d = d->next) {
+		if (d->owner != ntvfs) continue;
+		return d->private_data;
+	}
+
+	return NULL;
+}
+
+void ntvfs_handle_remove_backend_data(struct ntvfs_handle *h,
+					       struct ntvfs_module_context *ntvfs)
+{
+	struct ntvfs_handle_data *d,*n;
+
+	for (d=h->backend_data; d; d = n) {
+		n = d->next;
+		if (d->owner != ntvfs) continue;
+		DLIST_REMOVE(h->backend_data, d);
+		talloc_free(d);
+		d = NULL;
+	}
+
+	if (h->backend_data) return;
+
+	/* if there's no backend_data anymore, destroy the handle */
+	h->ctx->handles.destroy(h->ctx->handles.private_data, h);
+}
+
+struct ntvfs_handle *ntvfs_handle_search_by_wire_key(struct ntvfs_module_context *ntvfs,
+							      struct ntvfs_request *req,
+							      const DATA_BLOB *key)
+{
+	if (!ntvfs->ctx->handles.search_by_wire_key) {
+		return NULL;
+	}
+	return ntvfs->ctx->handles.search_by_wire_key(ntvfs->ctx->handles.private_data, req, key);
+}
+
+NTSTATUS ntvfs_set_handle_callbacks(struct ntvfs_context *ntvfs,
+					     NTSTATUS (*create_new)(void *private_data, struct ntvfs_request *req, struct ntvfs_handle **h),
+					     NTSTATUS (*make_valid)(void *private_data, struct ntvfs_handle *h),
+					     void (*destroy)(void *private_data, struct ntvfs_handle *h),
+					     struct ntvfs_handle *(*search_by_wire_key)(void *private_data, struct ntvfs_request *req, const DATA_BLOB *key),
+					     DATA_BLOB (*get_wire_key)(void *private_data, struct ntvfs_handle *handle, TALLOC_CTX *mem_ctx),
+					     void *private_data)
+{
+	ntvfs->handles.create_new		= create_new;
+	ntvfs->handles.make_valid		= make_valid;
+	ntvfs->handles.destroy			= destroy;
+	ntvfs->handles.search_by_wire_key	= search_by_wire_key;
+	ntvfs->handles.get_wire_key		= get_wire_key;
+	ntvfs->handles.private_data		= private_data;
+	return NT_STATUS_OK;
+}
diff --git a/source4/ntvfs/posix/posix_eadb.c b/source4/ntvfs/posix/posix_eadb.c
new file mode 100644
index 0000000..2d181fd
--- /dev/null
+++ b/source4/ntvfs/posix/posix_eadb.c
@@ -0,0 +1,299 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - xattr support using a tdb
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "lib/tdb_wrap/tdb_wrap.h"
+#ifdef WITH_NTVFS_FILESERVER
+#include "vfs_posix.h"
+#endif
+#include "posix_eadb.h"
+
+#define XATTR_LIST_ATTR ".xattr_list"
+
+/*
+  we need to maintain a list of attributes on each file, so that unlink
+  can automatically clean them up
+*/
+static NTSTATUS posix_eadb_add_list(struct tdb_wrap *ea_tdb, TALLOC_CTX *ctx, const char *attr_name,
+				   const char *fname, int fd)
+{
+	DATA_BLOB blob;
+	TALLOC_CTX *mem_ctx;
+	NTSTATUS status;
+	size_t len;
+
+	if (strcmp(attr_name, XATTR_LIST_ATTR) == 0) {
+		return NT_STATUS_OK;
+	}
+
+	mem_ctx = talloc_new(ctx);
+
+	status = pull_xattr_blob_tdb_raw(ea_tdb, mem_ctx, XATTR_LIST_ATTR,
+				     fname, fd, 100, &blob);
+	if (NT_STATUS_IS_OK(status)) {
+		const char *s;
+
+		for (s = (const char *)blob.data;
+		     s < (const char *)(blob.data + blob.length);
+		     s += strlen(s) + 1) {
+			if (strcmp(attr_name, s) == 0) {
+				talloc_free(mem_ctx);
+				return NT_STATUS_OK;
+			}
+		}
+	} else {
+		blob = data_blob(NULL, 0);
+		/* No need to parse an empty blob */
+	}
+
+	len = strlen(attr_name) + 1;
+
+	blob.data = talloc_realloc(mem_ctx, blob.data, uint8_t, blob.length + len);
+	if (blob.data == NULL) {
+		talloc_free(mem_ctx);
+		return NT_STATUS_NO_MEMORY;
+	}
+	memcpy(blob.data + blob.length, attr_name, len);
+	blob.length += len;
+
+	status = push_xattr_blob_tdb_raw(ea_tdb, XATTR_LIST_ATTR, fname, fd, &blob);
+	talloc_free(mem_ctx);
+
+	return status;
+}
+
+/*
+  form a key for using in the ea_tdb
+*/
+static NTSTATUS get_ea_tdb_key(TALLOC_CTX *mem_ctx,
+			      const char *attr_name,
+			      const char *fname, int fd,
+			      TDB_DATA *key)
+{
+	struct stat st;
+	size_t len = strlen(attr_name);
+
+	if (fd == -1) {
+		if (stat(fname, &st) == -1) {
+			return NT_STATUS_NOT_FOUND;
+		}
+	} else {
+		if (fstat(fd, &st) == -1) {
+			return NT_STATUS_NOT_FOUND;
+		}
+	}
+
+	key->dptr = talloc_array(mem_ctx, uint8_t, 16 + len);
+	if (key->dptr == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	key->dsize = 16 + len;
+
+	SBVAL(key->dptr, 0, st.st_dev);
+	SBVAL(key->dptr, 8, st.st_ino);
+	memcpy(key->dptr+16, attr_name, len);
+
+	return NT_STATUS_OK;
+}
+
+
+
+/*
+  pull a xattr as a blob, using the ea_tdb_context tdb
+*/
+NTSTATUS pull_xattr_blob_tdb_raw(struct tdb_wrap *ea_tdb,
+			     TALLOC_CTX *mem_ctx,
+			     const char *attr_name,
+			     const char *fname,
+			     int fd,
+			     size_t estimated_size,
+			     DATA_BLOB *blob)
+{
+	TDB_DATA tkey, tdata;
+	NTSTATUS status;
+
+	status = get_ea_tdb_key(mem_ctx, attr_name, fname, fd, &tkey);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	tdata = tdb_fetch(ea_tdb->tdb, tkey);
+	if (tdata.dptr == NULL) {
+		return NT_STATUS_NOT_FOUND;
+	}
+
+	*blob = data_blob_talloc(mem_ctx, tdata.dptr, tdata.dsize);
+	free(tdata.dptr);
+	if (blob->data == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	return NT_STATUS_OK;
+}
+
+/*
+  push a xattr as a blob, using ea_tdb
+*/
+NTSTATUS push_xattr_blob_tdb_raw(struct tdb_wrap *ea_tdb,
+			     const char *attr_name,
+			     const char *fname,
+			     int fd,
+			     const DATA_BLOB *blob)
+{
+	TDB_DATA tkey, tdata;
+	NTSTATUS status;
+	TALLOC_CTX *mem_ctx = talloc_new(ea_tdb);
+	if (!mem_ctx) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	status = get_ea_tdb_key(mem_ctx, attr_name, fname, fd, &tkey);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(mem_ctx);
+		return status;
+	}
+
+	tdata.dptr = blob->data;
+	tdata.dsize = blob->length;
+
+	if (tdb_chainlock(ea_tdb->tdb, tkey) != 0) {
+		talloc_free(mem_ctx);
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	status = posix_eadb_add_list(ea_tdb,mem_ctx, attr_name, fname, fd);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(mem_ctx);
+		goto done;
+	}
+
+	if (tdb_store(ea_tdb->tdb, tkey, tdata, TDB_REPLACE) != 0) {
+		status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+done:
+	tdb_chainunlock(ea_tdb->tdb, tkey);
+	talloc_free(mem_ctx);
+	return status;
+}
+
+
+/*
+  delete a xattr
+*/
+NTSTATUS delete_posix_eadb_raw(struct tdb_wrap *ea_tdb, const char *attr_name,
+			  const char *fname, int fd)
+{
+	TDB_DATA tkey;
+	NTSTATUS status;
+
+	status = get_ea_tdb_key(NULL, attr_name, fname, fd, &tkey);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	if (tdb_delete(ea_tdb->tdb, tkey) != 0) {
+		talloc_free(tkey.dptr);
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	talloc_free(tkey.dptr);
+	return NT_STATUS_OK;
+}
+
+
+/*
+  delete all xattrs for a file
+*/
+NTSTATUS unlink_posix_eadb_raw(struct tdb_wrap *ea_tdb, const char *fname, int fd)
+{
+	TALLOC_CTX *mem_ctx = talloc_new(ea_tdb);
+	DATA_BLOB blob;
+	const char *s;
+	NTSTATUS status;
+
+	status = pull_xattr_blob_tdb_raw(ea_tdb, mem_ctx, XATTR_LIST_ATTR,
+				     fname, fd, 100, &blob);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(mem_ctx);
+		return NT_STATUS_OK;
+	}
+
+	for (s=(const char *)blob.data; s < (const char *)(blob.data+blob.length); s += strlen(s) + 1) {
+		delete_posix_eadb_raw(ea_tdb, s, fname, -1);
+	}
+
+	status = delete_posix_eadb_raw(ea_tdb, XATTR_LIST_ATTR, fname, fd);
+	talloc_free(mem_ctx);
+	return status;
+}
+
+/*
+  list all xattrs for a file
+*/
+NTSTATUS list_posix_eadb_raw(struct tdb_wrap *ea_tdb, TALLOC_CTX *mem_ctx,
+			    const char *fname, int fd,
+			    DATA_BLOB *list)
+{
+	return pull_xattr_blob_tdb_raw(ea_tdb, mem_ctx, XATTR_LIST_ATTR,
+				     fname, fd, 100, list);
+}
+
+#ifdef WITH_NTVFS_FILESERVER
+NTSTATUS pull_xattr_blob_tdb(struct pvfs_state *pvfs_state,
+			     TALLOC_CTX *mem_ctx,
+			     const char *attr_name,
+			     const char *fname,
+			     int fd,
+			     size_t estimated_size,
+			     DATA_BLOB *blob)
+{
+	return pull_xattr_blob_tdb_raw(pvfs_state->ea_db,mem_ctx,attr_name,fname,fd,estimated_size,blob);
+}
+
+NTSTATUS push_xattr_blob_tdb(struct pvfs_state *pvfs_state,
+			     const char *attr_name,
+			     const char *fname,
+			     int fd,
+			     const DATA_BLOB *blob)
+{
+	return push_xattr_blob_tdb_raw(pvfs_state->ea_db, attr_name, fname, fd, blob);
+}
+
+/*
+  delete a xattr
+*/
+NTSTATUS delete_posix_eadb(struct pvfs_state *pvfs_state, const char *attr_name,
+			  const char *fname, int fd)
+{
+	return delete_posix_eadb_raw(pvfs_state->ea_db,
+				    attr_name, fname, fd);
+}
+
+/*
+  delete all xattrs for a file
+*/
+NTSTATUS unlink_posix_eadb(struct pvfs_state *pvfs_state, const char *fname)
+{
+	return unlink_posix_eadb_raw(pvfs_state->ea_db, fname, -1);
+}
+
+#endif
diff --git a/source4/ntvfs/posix/posix_eadb.h b/source4/ntvfs/posix/posix_eadb.h
new file mode 100644
index 0000000..14b9439
--- /dev/null
+++ b/source4/ntvfs/posix/posix_eadb.h
@@ -0,0 +1,20 @@
+/*
+   Unix SMB/CIFS implementation. Xattr manipulation bindings.
+   Copyright (C) Andrew Bartlett 2011
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+struct pvfs_state;
+#include "source4/ntvfs/posix/posix_eadb_proto.h"
diff --git a/source4/ntvfs/posix/pvfs_acl.c b/source4/ntvfs/posix/pvfs_acl.c
new file mode 100644
index 0000000..e643293
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_acl.c
@@ -0,0 +1,1083 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - ACL support
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "system/passwd.h"
+#include "auth/auth.h"
+#include "vfs_posix.h"
+#include "librpc/gen_ndr/xattr.h"
+#include "libcli/security/security.h"
+#include "param/param.h"
+#include "../lib/util/unix_privs.h"
+#include "lib/util/samba_modules.h"
+
+/* the list of currently registered ACL backends */
+static struct pvfs_acl_backend {
+	const struct pvfs_acl_ops *ops;
+} *backends = NULL;
+static int num_backends;
+
+/*
+  register a pvfs acl backend. 
+
+  The 'name' can be later used by other backends to find the operations
+  structure for this backend.  
+*/
+NTSTATUS pvfs_acl_register(TALLOC_CTX *ctx, const struct pvfs_acl_ops *ops)
+{
+	struct pvfs_acl_ops *new_ops;
+
+	if (pvfs_acl_backend_byname(ops->name) != NULL) {
+		DEBUG(0,("pvfs acl backend '%s' already registered\n", ops->name));
+		return NT_STATUS_OBJECT_NAME_COLLISION;
+	}
+
+	backends = talloc_realloc(ctx, backends,
+			struct pvfs_acl_backend, num_backends+1);
+	NT_STATUS_HAVE_NO_MEMORY(backends);
+
+	new_ops = (struct pvfs_acl_ops *)talloc_memdup(backends, ops, sizeof(*ops));
+	new_ops->name = talloc_strdup(new_ops, ops->name);
+
+	backends[num_backends].ops = new_ops;
+
+	num_backends++;
+
+	DEBUG(3,("NTVFS backend '%s' registered\n", ops->name));
+
+	return NT_STATUS_OK;
+}
+
+
+/*
+  return the operations structure for a named backend
+*/
+const struct pvfs_acl_ops *pvfs_acl_backend_byname(const char *name)
+{
+	int i;
+
+	for (i=0;i<num_backends;i++) {
+		if (strcmp(backends[i].ops->name, name) == 0) {
+			return backends[i].ops;
+		}
+	}
+
+	return NULL;
+}
+
+NTSTATUS pvfs_acl_init(void)
+{
+	static bool initialized = false;
+#define _MODULE_PROTO(init) extern NTSTATUS init(TALLOC_CTX *);
+	STATIC_pvfs_acl_MODULES_PROTO;
+	init_module_fn static_init[] = { STATIC_pvfs_acl_MODULES };
+	init_module_fn *shared_init;
+
+	if (initialized) return NT_STATUS_OK;
+	initialized = true;
+
+	shared_init = load_samba_modules(NULL, "pvfs_acl");
+
+	run_init_functions(NULL, static_init);
+	run_init_functions(NULL, shared_init);
+
+	talloc_free(shared_init);
+
+	return NT_STATUS_OK;
+}
+
+
+/*
+  map a single access_mask from generic to specific bits for files/dirs
+*/
+static uint32_t pvfs_translate_mask(uint32_t access_mask)
+{
+	if (access_mask & SEC_MASK_GENERIC) {
+		if (access_mask & SEC_GENERIC_READ)    access_mask |= SEC_RIGHTS_FILE_READ;
+		if (access_mask & SEC_GENERIC_WRITE)   access_mask |= SEC_RIGHTS_FILE_WRITE;
+		if (access_mask & SEC_GENERIC_EXECUTE) access_mask |= SEC_RIGHTS_FILE_EXECUTE;
+		if (access_mask & SEC_GENERIC_ALL)     access_mask |= SEC_RIGHTS_FILE_ALL;
+		access_mask &= ~SEC_MASK_GENERIC;
+	}
+	return access_mask;
+}
+
+
+/*
+  map any generic access bits in the given acl
+  this relies on the fact that the mappings for files and directories
+  are the same
+*/
+static void pvfs_translate_generic_bits(struct security_acl *acl)
+{
+	unsigned i;
+
+	if (!acl) return;
+
+	for (i=0;i<acl->num_aces;i++) {
+		struct security_ace *ace = &acl->aces[i];
+		ace->access_mask = pvfs_translate_mask(ace->access_mask);
+	}
+}
+
+
+/*
+  setup a default ACL for a file
+*/
+static NTSTATUS pvfs_default_acl(struct pvfs_state *pvfs,
+				 struct ntvfs_request *req,
+				 struct pvfs_filename *name, int fd, 
+				 struct security_descriptor **psd)
+{
+	struct security_descriptor *sd;
+	NTSTATUS status;
+	struct security_ace ace = {};
+	mode_t mode;
+	struct id_map *ids;
+
+	*psd = security_descriptor_initialise(req);
+	if (*psd == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	sd = *psd;
+
+	ids = talloc_zero_array(sd, struct id_map, 2);
+	NT_STATUS_HAVE_NO_MEMORY(ids);
+
+	ids[0].xid.id = name->st.st_uid;
+	ids[0].xid.type = ID_TYPE_UID;
+	ids[0].sid = NULL;
+
+	ids[1].xid.id = name->st.st_gid;
+	ids[1].xid.type = ID_TYPE_GID;
+	ids[1].sid = NULL;
+
+	status = wbc_xids_to_sids(ids, 2);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	sd->owner_sid = talloc_steal(sd, ids[0].sid);
+	sd->group_sid = talloc_steal(sd, ids[1].sid);
+
+	talloc_free(ids);
+	sd->type |= SEC_DESC_DACL_PRESENT;
+
+	mode = name->st.st_mode;
+
+	/*
+	  we provide up to 4 ACEs
+	    - Owner
+	    - Group
+	    - Everyone
+	    - Administrator
+	 */
+
+
+	/* setup owner ACE */
+	ace.type = SEC_ACE_TYPE_ACCESS_ALLOWED;
+	ace.flags = 0;
+	ace.trustee = *sd->owner_sid;
+	ace.access_mask = 0;
+
+	if (mode & S_IRUSR) {
+		if (mode & S_IWUSR) {
+			ace.access_mask |= SEC_RIGHTS_FILE_ALL;
+		} else {
+			ace.access_mask |= SEC_RIGHTS_FILE_READ | SEC_FILE_EXECUTE;
+		}
+	}
+	if (mode & S_IWUSR) {
+		ace.access_mask |= SEC_RIGHTS_FILE_WRITE | SEC_STD_DELETE;
+	}
+	if (ace.access_mask) {
+		security_descriptor_dacl_add(sd, &ace);
+	}
+
+
+	/* setup group ACE */
+	ace.trustee = *sd->group_sid;
+	ace.access_mask = 0;
+	if (mode & S_IRGRP) {
+		ace.access_mask |= SEC_RIGHTS_FILE_READ | SEC_FILE_EXECUTE;
+	}
+	if (mode & S_IWGRP) {
+		/* note that delete is not granted - this matches posix behaviour */
+		ace.access_mask |= SEC_RIGHTS_FILE_WRITE;
+	}
+	if (ace.access_mask) {
+		security_descriptor_dacl_add(sd, &ace);
+	}
+
+	/* setup other ACE */
+	ace.trustee = global_sid_World;
+	ace.access_mask = 0;
+	if (mode & S_IROTH) {
+		ace.access_mask |= SEC_RIGHTS_FILE_READ | SEC_FILE_EXECUTE;
+	}
+	if (mode & S_IWOTH) {
+		ace.access_mask |= SEC_RIGHTS_FILE_WRITE;
+	}
+	if (ace.access_mask) {
+		security_descriptor_dacl_add(sd, &ace);
+	}
+
+	/* setup system ACE */
+	ace.trustee = global_sid_System;
+	ace.access_mask = SEC_RIGHTS_FILE_ALL;
+	security_descriptor_dacl_add(sd, &ace);
+	
+	return NT_STATUS_OK;
+}
+				 
+
+/*
+  omit any security_descriptor elements not specified in the given
+  secinfo flags
+*/
+static void normalise_sd_flags(struct security_descriptor *sd, uint32_t secinfo_flags)
+{
+	if (!(secinfo_flags & SECINFO_OWNER)) {
+		sd->owner_sid = NULL;
+	}
+	if (!(secinfo_flags & SECINFO_GROUP)) {
+		sd->group_sid = NULL;
+	}
+	if (!(secinfo_flags & SECINFO_DACL)) {
+		sd->dacl = NULL;
+	}
+	if (!(secinfo_flags & SECINFO_SACL)) {
+		sd->sacl = NULL;
+	}
+}
+
+static bool pvfs_privileged_access(uid_t uid)
+{
+	uid_t euid;
+
+	if (uid_wrapper_enabled()) {
+		setenv("UID_WRAPPER_MYUID", "1", 1);
+	}
+
+	euid = geteuid();
+
+	if (uid_wrapper_enabled()) {
+		unsetenv("UID_WRAPPER_MYUID");
+	}
+
+	return (uid == euid);
+}
+
+/*
+  answer a setfileinfo for an ACL
+*/
+NTSTATUS pvfs_acl_set(struct pvfs_state *pvfs, 
+		      struct ntvfs_request *req,
+		      struct pvfs_filename *name, int fd, 
+		      uint32_t access_mask,
+		      union smb_setfileinfo *info)
+{
+	uint32_t secinfo_flags = info->set_secdesc.in.secinfo_flags;
+	struct security_descriptor *new_sd, *sd, orig_sd;
+	NTSTATUS status = NT_STATUS_NOT_FOUND;
+	uid_t old_uid = -1;
+	gid_t old_gid = -1;
+	uid_t new_uid = -1;
+	gid_t new_gid = -1;
+	struct id_map *ids;
+
+	if (pvfs->acl_ops != NULL) {
+		status = pvfs->acl_ops->acl_load(pvfs, name, fd, req, &sd);
+	}
+	if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
+		status = pvfs_default_acl(pvfs, req, name, fd, &sd);
+	}
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	ids = talloc(req, struct id_map);
+	NT_STATUS_HAVE_NO_MEMORY(ids);
+	ZERO_STRUCT(ids->xid);
+	ids->sid = NULL;
+	ids->status = ID_UNKNOWN;
+
+	new_sd = info->set_secdesc.in.sd;
+	orig_sd = *sd;
+
+	old_uid = name->st.st_uid;
+	old_gid = name->st.st_gid;
+
+	/* only set the elements that have been specified */
+	if (secinfo_flags & SECINFO_OWNER) {
+		if (!(access_mask & SEC_STD_WRITE_OWNER)) {
+			return NT_STATUS_ACCESS_DENIED;
+		}
+		if (!dom_sid_equal(sd->owner_sid, new_sd->owner_sid)) {
+			ids->sid = new_sd->owner_sid;
+			status = wbc_sids_to_xids(ids, 1);
+			NT_STATUS_NOT_OK_RETURN(status);
+
+			if (ids->xid.type == ID_TYPE_BOTH ||
+			    ids->xid.type == ID_TYPE_UID) {
+				new_uid = ids->xid.id;
+			}
+		}
+		sd->owner_sid = new_sd->owner_sid;
+	}
+
+	if (secinfo_flags & SECINFO_GROUP) {
+		if (!(access_mask & SEC_STD_WRITE_OWNER)) {
+			return NT_STATUS_ACCESS_DENIED;
+		}
+		if (!dom_sid_equal(sd->group_sid, new_sd->group_sid)) {
+			ids->sid = new_sd->group_sid;
+			status = wbc_sids_to_xids(ids, 1);
+			NT_STATUS_NOT_OK_RETURN(status);
+
+			if (ids->xid.type == ID_TYPE_BOTH ||
+			    ids->xid.type == ID_TYPE_GID) {
+				new_gid = ids->xid.id;
+			}
+
+		}
+		sd->group_sid = new_sd->group_sid;
+	}
+
+	if (secinfo_flags & SECINFO_DACL) {
+		if (!(access_mask & SEC_STD_WRITE_DAC)) {
+			return NT_STATUS_ACCESS_DENIED;
+		}
+		sd->dacl = new_sd->dacl;
+		pvfs_translate_generic_bits(sd->dacl);
+		sd->type |= SEC_DESC_DACL_PRESENT;
+	}
+
+	if (secinfo_flags & SECINFO_SACL) {
+		if (!(access_mask & SEC_FLAG_SYSTEM_SECURITY)) {
+			return NT_STATUS_ACCESS_DENIED;
+		}
+		sd->sacl = new_sd->sacl;
+		pvfs_translate_generic_bits(sd->sacl);
+		sd->type |= SEC_DESC_SACL_PRESENT;
+	}
+
+	if (secinfo_flags & SECINFO_PROTECTED_DACL) {
+		if (new_sd->type & SEC_DESC_DACL_PROTECTED) {
+			sd->type |= SEC_DESC_DACL_PROTECTED;
+		} else {
+			sd->type &= ~SEC_DESC_DACL_PROTECTED;
+		}
+	}
+
+	if (secinfo_flags & SECINFO_PROTECTED_SACL) {
+		if (new_sd->type & SEC_DESC_SACL_PROTECTED) {
+			sd->type |= SEC_DESC_SACL_PROTECTED;
+		} else {
+			sd->type &= ~SEC_DESC_SACL_PROTECTED;
+		}
+	}
+
+	if (new_uid == old_uid) {
+		new_uid = -1;
+	}
+
+	if (new_gid == old_gid) {
+		new_gid = -1;
+	}
+
+	/* if there's something to change try it */
+	if (new_uid != -1 || new_gid != -1) {
+		int ret;
+		if (fd == -1) {
+			ret = chown(name->full_name, new_uid, new_gid);
+		} else {
+			ret = fchown(fd, new_uid, new_gid);
+		}
+		if (errno == EPERM) {
+			if (pvfs_privileged_access(name->st.st_uid)) {
+				ret = 0;
+			} else {
+				/* try again as root if we have SEC_PRIV_RESTORE or
+				   SEC_PRIV_TAKE_OWNERSHIP */
+				if (security_token_has_privilege(req->session_info->security_token,
+								 SEC_PRIV_RESTORE) ||
+				    security_token_has_privilege(req->session_info->security_token,
+								 SEC_PRIV_TAKE_OWNERSHIP)) {
+					void *privs;
+					privs = root_privileges();
+					if (fd == -1) {
+						ret = chown(name->full_name, new_uid, new_gid);
+					} else {
+						ret = fchown(fd, new_uid, new_gid);
+					}
+					talloc_free(privs);
+				}
+			}
+		}
+		if (ret == -1) {
+			return pvfs_map_errno(pvfs, errno);
+		}
+	}
+
+	/* we avoid saving if the sd is the same. This means when clients
+	   copy files and end up copying the default sd that we don't
+	   needlessly use xattrs */
+	if (!security_descriptor_equal(sd, &orig_sd) && pvfs->acl_ops) {
+		status = pvfs->acl_ops->acl_save(pvfs, name, fd, sd);
+	}
+
+	return status;
+}
+
+
+/*
+  answer a fileinfo query for the ACL
+*/
+NTSTATUS pvfs_acl_query(struct pvfs_state *pvfs, 
+			struct ntvfs_request *req,
+			struct pvfs_filename *name, int fd, 
+			union smb_fileinfo *info)
+{
+	NTSTATUS status = NT_STATUS_NOT_FOUND;
+	struct security_descriptor *sd;
+
+	if (pvfs->acl_ops) {
+		status = pvfs->acl_ops->acl_load(pvfs, name, fd, req, &sd);
+	}
+	if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
+		status = pvfs_default_acl(pvfs, req, name, fd, &sd);
+	}
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	normalise_sd_flags(sd, info->query_secdesc.in.secinfo_flags);
+
+	info->query_secdesc.out.sd = sd;
+
+	return NT_STATUS_OK;
+}
+
+
+/*
+  check the read only bit against any of the write access bits
+*/
+static bool pvfs_read_only(struct pvfs_state *pvfs, uint32_t access_mask)
+{
+	if ((pvfs->flags & PVFS_FLAG_READONLY) &&
+	    (access_mask & (SEC_FILE_WRITE_DATA |
+			    SEC_FILE_APPEND_DATA | 
+			    SEC_FILE_WRITE_EA | 
+			    SEC_FILE_WRITE_ATTRIBUTE | 
+			    SEC_STD_DELETE | 
+			    SEC_STD_WRITE_DAC | 
+			    SEC_STD_WRITE_OWNER | 
+			    SEC_DIR_DELETE_CHILD))) {
+		return true;
+	}
+	return false;
+}
+
+/*
+  see if we are a member of the appropriate unix group
+ */
+static bool pvfs_group_member(struct pvfs_state *pvfs, gid_t gid)
+{
+	int i, ngroups;
+	gid_t *groups;
+	if (getegid() == gid) {
+		return true;
+	}
+	ngroups = getgroups(0, NULL);
+	if (ngroups <= 0) {
+		return false;
+	}
+	groups = talloc_array(pvfs, gid_t, ngroups);
+	if (groups == NULL) {
+		return false;
+	}
+	if (getgroups(ngroups, groups) != ngroups) {
+		talloc_free(groups);
+		return false;
+	}
+	for (i=0; i<ngroups; i++) {
+		if (groups[i] == gid) break;
+	}
+	talloc_free(groups);
+	return i < ngroups;
+}
+
+/*
+  default access check function based on unix permissions
+  doing this saves on building a full security descriptor
+  for the common case of access check on files with no 
+  specific NT ACL
+
+  If name is NULL then treat as a new file creation
+*/
+static NTSTATUS pvfs_access_check_unix(struct pvfs_state *pvfs,
+				       struct ntvfs_request *req,
+				       struct pvfs_filename *name,
+				       uint32_t *access_mask)
+{
+	uint32_t max_bits = 0;
+	struct security_token *token = req->session_info->security_token;
+
+	if (pvfs_read_only(pvfs, *access_mask)) {
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
+	if (name == NULL) {
+		max_bits |= SEC_RIGHTS_FILE_ALL | SEC_STD_ALL;
+	} else if (pvfs_privileged_access(name->st.st_uid)) {
+		/* use the IxUSR bits */
+		if ((name->st.st_mode & S_IWUSR)) {
+			max_bits |= SEC_RIGHTS_FILE_ALL | SEC_STD_ALL;
+		} else if ((name->st.st_mode & (S_IRUSR | S_IXUSR))) {
+			max_bits |= SEC_RIGHTS_FILE_READ | SEC_RIGHTS_FILE_EXECUTE | SEC_STD_ALL;
+		}
+	} else if (pvfs_group_member(pvfs, name->st.st_gid)) {
+		/* use the IxGRP bits */
+		if ((name->st.st_mode & S_IWGRP)) {
+			max_bits |= SEC_RIGHTS_FILE_ALL | SEC_STD_ALL;
+		} else if ((name->st.st_mode & (S_IRGRP | S_IXGRP))) {
+			max_bits |= SEC_RIGHTS_FILE_READ | SEC_RIGHTS_FILE_EXECUTE | SEC_STD_ALL;
+		}
+	} else {
+		/* use the IxOTH bits */
+		if ((name->st.st_mode & S_IWOTH)) {
+			max_bits |= SEC_RIGHTS_FILE_ALL | SEC_STD_ALL;
+		} else if ((name->st.st_mode & (S_IROTH | S_IXOTH))) {
+			max_bits |= SEC_RIGHTS_FILE_READ | SEC_RIGHTS_FILE_EXECUTE | SEC_STD_ALL;
+		}
+	}
+
+	if (*access_mask & SEC_FLAG_MAXIMUM_ALLOWED) {
+		*access_mask |= max_bits;
+		*access_mask &= ~SEC_FLAG_MAXIMUM_ALLOWED;
+	}
+
+	if ((*access_mask & SEC_FLAG_SYSTEM_SECURITY) &&
+	    security_token_has_privilege(token, SEC_PRIV_SECURITY)) {
+		max_bits |= SEC_FLAG_SYSTEM_SECURITY;
+	}
+	
+	if (((*access_mask & ~max_bits) & SEC_RIGHTS_PRIV_RESTORE) &&
+	    security_token_has_privilege(token, SEC_PRIV_RESTORE)) {
+		max_bits |= ~(SEC_RIGHTS_PRIV_RESTORE);
+	}
+	if (((*access_mask & ~max_bits) & SEC_RIGHTS_PRIV_BACKUP) &&
+	    security_token_has_privilege(token, SEC_PRIV_BACKUP)) {
+		max_bits |= ~(SEC_RIGHTS_PRIV_BACKUP);
+	}
+
+	if (*access_mask & ~max_bits) {
+		DEBUG(5,(__location__ " denied access to '%s' - wanted 0x%08x but got 0x%08x (missing 0x%08x)\n",
+			 name?name->full_name:"(new file)", *access_mask, max_bits, *access_mask & ~max_bits));
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
+	if (pvfs->ntvfs->ctx->protocol < PROTOCOL_SMB2_02) {
+		/* on SMB, this bit is always granted, even if not
+		   asked for */
+		*access_mask |= SEC_FILE_READ_ATTRIBUTE;
+	}
+
+	return NT_STATUS_OK;
+}
+
+
+/*
+  check the security descriptor on a file, if any
+  
+  *access_mask is modified with the access actually granted
+*/
+NTSTATUS pvfs_access_check(struct pvfs_state *pvfs, 
+			   struct ntvfs_request *req,
+			   struct pvfs_filename *name,
+			   uint32_t *access_mask)
+{
+	struct security_token *token = req->session_info->security_token;
+	struct xattr_NTACL *acl;
+	NTSTATUS status;
+	struct security_descriptor *sd;
+	bool allow_delete = false;
+
+	/* on SMB2 a blank access mask is always denied */
+	if (pvfs->ntvfs->ctx->protocol >= PROTOCOL_SMB2_02 &&
+	    *access_mask == 0) {
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
+	if (pvfs_read_only(pvfs, *access_mask)) {
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
+	if (*access_mask & SEC_FLAG_MAXIMUM_ALLOWED ||
+	    *access_mask & SEC_STD_DELETE) {
+		status = pvfs_access_check_parent(pvfs, req,
+						  name, SEC_DIR_DELETE_CHILD);
+		if (NT_STATUS_IS_OK(status)) {
+			allow_delete = true;
+			*access_mask &= ~SEC_STD_DELETE;
+		}
+	}
+
+	acl = talloc(req, struct xattr_NTACL);
+	if (acl == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	/* expand the generic access bits to file specific bits */
+	*access_mask = pvfs_translate_mask(*access_mask);
+	if (pvfs->ntvfs->ctx->protocol < PROTOCOL_SMB2_02) {
+		*access_mask &= ~SEC_FILE_READ_ATTRIBUTE;
+	}
+
+	status = pvfs_acl_load(pvfs, name, -1, acl);
+	if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
+		talloc_free(acl);
+		status = pvfs_access_check_unix(pvfs, req, name, access_mask);
+		goto done;
+	}
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	switch (acl->version) {
+	case 1:
+		sd = acl->info.sd;
+		break;
+	default:
+		return NT_STATUS_INVALID_ACL;
+	}
+
+	/* check the acl against the required access mask */
+	status = se_file_access_check(sd, token, false, *access_mask, access_mask);
+	talloc_free(acl);
+
+	/* if we used a NT acl, then allow access override if the
+	   share allows for posix permission override
+	*/
+	if (NT_STATUS_IS_OK(status)) {
+		name->allow_override = (pvfs->flags & PVFS_FLAG_PERM_OVERRIDE) != 0;
+	}
+
+done:
+	if (pvfs->ntvfs->ctx->protocol < PROTOCOL_SMB2_02) {
+		/* on SMB, this bit is always granted, even if not
+		   asked for */
+		*access_mask |= SEC_FILE_READ_ATTRIBUTE;
+	}
+
+	if (allow_delete) {
+		*access_mask |= SEC_STD_DELETE;
+	}
+
+	return status;
+}
+
+
+/*
+  a simplified interface to access check, designed for calls that
+  do not take or return an access check mask
+*/
+NTSTATUS pvfs_access_check_simple(struct pvfs_state *pvfs, 
+				  struct ntvfs_request *req,
+				  struct pvfs_filename *name,
+				  uint32_t access_needed)
+{
+	if (access_needed == 0) {
+		return NT_STATUS_OK;
+	}
+	return pvfs_access_check(pvfs, req, name, &access_needed);
+}
+
+/*
+  access check for creating a new file/directory
+*/
+NTSTATUS pvfs_access_check_create(struct pvfs_state *pvfs, 
+				  struct ntvfs_request *req,
+				  struct pvfs_filename *name,
+				  uint32_t *access_mask,
+				  bool container,
+				  struct security_descriptor **sd)
+{
+	struct pvfs_filename *parent;
+	NTSTATUS status;
+	uint32_t parent_mask;
+	bool allow_delete = false;
+
+	if (pvfs_read_only(pvfs, *access_mask)) {
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
+	status = pvfs_resolve_parent(pvfs, req, name, &parent);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	if (container) {
+		parent_mask = SEC_DIR_ADD_SUBDIR;
+	} else {
+		parent_mask = SEC_DIR_ADD_FILE;
+	}
+	if (*access_mask & SEC_FLAG_MAXIMUM_ALLOWED ||
+	    *access_mask & SEC_STD_DELETE) {
+		parent_mask |= SEC_DIR_DELETE_CHILD;
+	}
+
+	status = pvfs_access_check(pvfs, req, parent, &parent_mask);
+	if (NT_STATUS_IS_OK(status)) {
+		if (parent_mask & SEC_DIR_DELETE_CHILD) {
+			allow_delete = true;
+		}
+	} else if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
+		/*
+		 * on ACCESS_DENIED we get the rejected bits
+		 * remove the non critical SEC_DIR_DELETE_CHILD
+		 * and check if something else was rejected.
+		 */
+		parent_mask &= ~SEC_DIR_DELETE_CHILD;
+		if (parent_mask != 0) {
+			return NT_STATUS_ACCESS_DENIED;
+		}
+		status = NT_STATUS_OK;
+	} else {
+		return status;
+	}
+
+	if (*sd == NULL) {
+		status = pvfs_acl_inherited_sd(pvfs, req, req, parent, container, sd);
+	}
+
+	talloc_free(parent);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	/* expand the generic access bits to file specific bits */
+	*access_mask = pvfs_translate_mask(*access_mask);
+
+	if (*access_mask & SEC_FLAG_MAXIMUM_ALLOWED) {
+		*access_mask |= SEC_RIGHTS_FILE_ALL;
+		*access_mask &= ~SEC_FLAG_MAXIMUM_ALLOWED;
+	}
+
+	if (pvfs->ntvfs->ctx->protocol < PROTOCOL_SMB2_02) {
+		/* on SMB, this bit is always granted, even if not
+		   asked for */
+		*access_mask |= SEC_FILE_READ_ATTRIBUTE;
+	}
+
+	if (allow_delete) {
+		*access_mask |= SEC_STD_DELETE;
+	}
+
+	return NT_STATUS_OK;
+}
+
+/*
+  access check for creating a new file/directory - no access mask supplied
+*/
+NTSTATUS pvfs_access_check_parent(struct pvfs_state *pvfs, 
+				  struct ntvfs_request *req,
+				  struct pvfs_filename *name,
+				  uint32_t access_mask)
+{
+	struct pvfs_filename *parent;
+	NTSTATUS status;
+
+	status = pvfs_resolve_parent(pvfs, req, name, &parent);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	status = pvfs_access_check_simple(pvfs, req, parent, access_mask);
+	if (NT_STATUS_IS_OK(status) && parent->allow_override) {
+		name->allow_override = true;
+	}
+	return status;
+}
+
+
+/*
+  determine if an ACE is inheritable
+*/
+static bool pvfs_inheritable_ace(struct pvfs_state *pvfs,
+				 const struct security_ace *ace,
+				 bool container)
+{
+	if (!container) {
+		return (ace->flags & SEC_ACE_FLAG_OBJECT_INHERIT) != 0;
+	}
+
+	if (ace->flags & SEC_ACE_FLAG_CONTAINER_INHERIT) {
+		return true;
+	}
+
+	if ((ace->flags & SEC_ACE_FLAG_OBJECT_INHERIT) &&
+	    !(ace->flags & SEC_ACE_FLAG_NO_PROPAGATE_INHERIT)) {
+		return true;
+	}
+
+	return false;
+}
+
+/*
+  this is the core of ACL inheritance. It copies any inheritable
+  aces from the parent SD to the child SD. Note that the algorithm 
+  depends on whether the child is a container or not
+*/
+static NTSTATUS pvfs_acl_inherit_aces(struct pvfs_state *pvfs, 
+				      struct security_descriptor *parent_sd,
+				      struct security_descriptor *sd,
+				      bool container)
+{
+	int i;
+	
+	for (i=0;i<parent_sd->dacl->num_aces;i++) {
+		struct security_ace ace = parent_sd->dacl->aces[i];
+		NTSTATUS status;
+		const struct dom_sid *creator = NULL, *new_id = NULL;
+		uint32_t orig_flags;
+
+		if (!pvfs_inheritable_ace(pvfs, &ace, container)) {
+			continue;
+		}
+
+		orig_flags = ace.flags;
+
+		/* see the RAW-ACLS inheritance test for details on these rules */
+		if (!container) {
+			ace.flags = 0;
+		} else {
+			ace.flags &= ~SEC_ACE_FLAG_INHERIT_ONLY;
+
+			if (!(ace.flags & SEC_ACE_FLAG_CONTAINER_INHERIT)) {
+				ace.flags |= SEC_ACE_FLAG_INHERIT_ONLY;
+			}
+			if (ace.flags & SEC_ACE_FLAG_NO_PROPAGATE_INHERIT) {
+				ace.flags = 0;
+			}
+		}
+
+		/* the CREATOR sids are special when inherited */
+		if (dom_sid_equal(&ace.trustee, pvfs->sid_cache.creator_owner)) {
+			creator = pvfs->sid_cache.creator_owner;
+			new_id = sd->owner_sid;
+		} else if (dom_sid_equal(&ace.trustee, pvfs->sid_cache.creator_group)) {
+			creator = pvfs->sid_cache.creator_group;
+			new_id = sd->group_sid;
+		} else {
+			new_id = &ace.trustee;
+		}
+
+		if (creator && container && 
+		    (ace.flags & SEC_ACE_FLAG_CONTAINER_INHERIT)) {
+			uint32_t flags = ace.flags;
+
+			ace.trustee = *new_id;
+			ace.flags = 0;
+			status = security_descriptor_dacl_add(sd, &ace);
+			if (!NT_STATUS_IS_OK(status)) {
+				return status;
+			}
+
+			ace.trustee = *creator;
+			ace.flags = flags | SEC_ACE_FLAG_INHERIT_ONLY;
+			status = security_descriptor_dacl_add(sd, &ace);
+		} else if (container && 
+			   !(orig_flags & SEC_ACE_FLAG_NO_PROPAGATE_INHERIT)) {
+			status = security_descriptor_dacl_add(sd, &ace);
+		} else {
+			ace.trustee = *new_id;
+			status = security_descriptor_dacl_add(sd, &ace);
+		}
+
+		if (!NT_STATUS_IS_OK(status)) {
+			return status;
+		}
+	}
+
+	return NT_STATUS_OK;
+}
+
+
+
+/*
+  calculate the ACL on a new file/directory based on the inherited ACL
+  from the parent. If there is no inherited ACL then return a NULL
+  ACL, which means the default ACL should be used
+*/
+NTSTATUS pvfs_acl_inherited_sd(struct pvfs_state *pvfs, 
+			       TALLOC_CTX *mem_ctx,
+			       struct ntvfs_request *req,
+			       struct pvfs_filename *parent,
+			       bool container,
+			       struct security_descriptor **ret_sd)
+{
+	struct xattr_NTACL *acl;
+	NTSTATUS status;
+	struct security_descriptor *parent_sd, *sd;
+	struct id_map *ids;
+	TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
+
+	*ret_sd = NULL;
+
+	acl = talloc(req, struct xattr_NTACL);
+	if (acl == NULL) {
+		TALLOC_FREE(tmp_ctx);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	status = pvfs_acl_load(pvfs, parent, -1, acl);
+	if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
+		talloc_free(tmp_ctx);
+		return NT_STATUS_OK;
+	}
+	if (!NT_STATUS_IS_OK(status)) {
+		TALLOC_FREE(tmp_ctx);
+		return status;
+	}
+
+	switch (acl->version) {
+	case 1:
+		parent_sd = acl->info.sd;
+		break;
+	default:
+		talloc_free(tmp_ctx);
+		return NT_STATUS_INVALID_ACL;
+	}
+
+	if (parent_sd == NULL ||
+	    parent_sd->dacl == NULL ||
+	    parent_sd->dacl->num_aces == 0) {
+		/* go with the default ACL */
+		talloc_free(tmp_ctx);
+		return NT_STATUS_OK;
+	}
+
+	/* create the new sd */
+	sd = security_descriptor_initialise(req);
+	if (sd == NULL) {
+		TALLOC_FREE(tmp_ctx);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	ids = talloc_array(sd, struct id_map, 2);
+	if (ids == NULL) {
+		TALLOC_FREE(tmp_ctx);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	ids[0].xid.id = geteuid();
+	ids[0].xid.type = ID_TYPE_UID;
+	ids[0].sid = NULL;
+	ids[0].status = ID_UNKNOWN;
+
+	ids[1].xid.id = getegid();
+	ids[1].xid.type = ID_TYPE_GID;
+	ids[1].sid = NULL;
+	ids[1].status = ID_UNKNOWN;
+
+	status = wbc_xids_to_sids(ids, 2);
+	if (!NT_STATUS_IS_OK(status)) {
+		TALLOC_FREE(tmp_ctx);
+		return status;
+	}
+
+	sd->owner_sid = talloc_steal(sd, ids[0].sid);
+	sd->group_sid = talloc_steal(sd, ids[1].sid);
+
+	sd->type |= SEC_DESC_DACL_PRESENT;
+
+	/* fill in the aces from the parent */
+	status = pvfs_acl_inherit_aces(pvfs, parent_sd, sd, container);
+	if (!NT_STATUS_IS_OK(status)) {
+		TALLOC_FREE(tmp_ctx);
+		return status;
+	}
+
+	/* if there is nothing to inherit then we fallback to the
+	   default acl */
+	if (sd->dacl == NULL || sd->dacl->num_aces == 0) {
+		talloc_free(tmp_ctx);
+		return NT_STATUS_OK;
+	}
+
+	*ret_sd = talloc_steal(mem_ctx, sd);
+
+	talloc_free(tmp_ctx);
+	return NT_STATUS_OK;
+}
+
+
+/*
+  setup an ACL on a new file/directory based on the inherited ACL from
+  the parent. If there is no inherited ACL then we don't set anything,
+  as the default ACL applies anyway
+*/
+NTSTATUS pvfs_acl_inherit(struct pvfs_state *pvfs, 
+			  struct ntvfs_request *req,
+			  struct pvfs_filename *name,
+			  int fd)
+{
+	struct xattr_NTACL acl;
+	NTSTATUS status;
+	struct security_descriptor *sd;
+	struct pvfs_filename *parent;
+	bool container;
+
+	/* form the parents path */
+	status = pvfs_resolve_parent(pvfs, req, name, &parent);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	container = (name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY) ? true:false;
+
+	status = pvfs_acl_inherited_sd(pvfs, req, req, parent, container, &sd);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(parent);
+		return status;
+	}
+
+	if (sd == NULL) {
+		return NT_STATUS_OK;
+	}
+
+	acl.version = 1;
+	acl.info.sd = sd;
+
+	status = pvfs_acl_save(pvfs, name, fd, &acl);
+	talloc_free(sd);
+	talloc_free(parent);
+
+	return status;
+}
+
+/*
+  return the maximum allowed access mask
+*/
+NTSTATUS pvfs_access_maximal_allowed(struct pvfs_state *pvfs, 
+				     struct ntvfs_request *req,
+				     struct pvfs_filename *name,
+				     uint32_t *maximal_access)
+{
+	*maximal_access = SEC_FLAG_MAXIMUM_ALLOWED;
+	return pvfs_access_check(pvfs, req, name, maximal_access);
+}
diff --git a/source4/ntvfs/posix/pvfs_acl_nfs4.c b/source4/ntvfs/posix/pvfs_acl_nfs4.c
new file mode 100644
index 0000000..3ddc1b6
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_acl_nfs4.c
@@ -0,0 +1,199 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - NT ACLs mapped to NFS4 ACLs, as per
+   http://www.suse.de/~agruen/nfs4acl/
+
+   Copyright (C) Andrew Tridgell 2006
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "../lib/util/unix_privs.h"
+#include "librpc/gen_ndr/ndr_nfs4acl.h"
+#include "libcli/security/security.h"
+
+NTSTATUS pvfs_acl_nfs4_init(TALLOC_CTX *);
+
+#define ACE4_IDENTIFIER_GROUP 0x40
+
+/*
+  load the current ACL from system.nfs4acl
+*/
+static NTSTATUS pvfs_acl_load_nfs4(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd,
+				   TALLOC_CTX *mem_ctx,
+				   struct security_descriptor **psd)
+{
+	NTSTATUS status;
+	struct nfs4acl *acl;
+	struct security_descriptor *sd;
+	int i, num_ids;
+	struct id_map *ids;
+
+	acl = talloc_zero(mem_ctx, struct nfs4acl);
+	NT_STATUS_HAVE_NO_MEMORY(acl);
+
+	status = pvfs_xattr_ndr_load(pvfs, mem_ctx, name->full_name, fd, 
+				     NFS4ACL_NDR_XATTR_NAME,
+				     acl, (void *) ndr_pull_nfs4acl);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(acl);
+		return status;
+	}
+
+	*psd = security_descriptor_initialise(mem_ctx);
+	NT_STATUS_HAVE_NO_MEMORY(*psd);
+
+	sd = *psd;
+
+	sd->type |= acl->a_flags;
+
+	/* the number of ids to map is the acl count plus uid and gid */
+	num_ids = acl->a_count +2;
+	ids = talloc_array(sd, struct id_map, num_ids);
+	NT_STATUS_HAVE_NO_MEMORY(ids);
+
+	ids[0].xid.id = name->st.st_uid;
+	ids[0].xid.type = ID_TYPE_UID;
+	ids[0].sid = NULL;
+	ids[0].status = ID_UNKNOWN;
+
+	ids[1].xid.id = name->st.st_gid;
+	ids[1].xid.type = ID_TYPE_GID;
+	ids[1].sid = NULL;
+	ids[1].status = ID_UNKNOWN;
+
+	for (i=0;i<acl->a_count;i++) {
+		struct nfs4ace *a = &acl->ace[i];
+		ids[i+2].xid.id = a->e_id;
+		if (a->e_flags & ACE4_IDENTIFIER_GROUP) {
+			ids[i+2].xid.type = ID_TYPE_GID;
+		} else {
+			ids[i+2].xid.type = ID_TYPE_UID;
+		}
+		ids[i+2].sid = NULL;
+		ids[i+2].status = ID_UNKNOWN;
+	}
+
+	/* Allocate memory for the sids from the security descriptor to be on
+	 * the safe side. */
+	status = wbc_xids_to_sids(ids, num_ids);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	sd->owner_sid = talloc_steal(sd, ids[0].sid);
+	sd->group_sid = talloc_steal(sd, ids[1].sid);
+
+	for (i=0;i<acl->a_count;i++) {
+		struct nfs4ace *a = &acl->ace[i];
+		struct security_ace ace = {};
+		ace.type = a->e_type;
+		ace.flags = a->e_flags;
+		ace.access_mask = a->e_mask;
+		ace.trustee = *ids[i+2].sid;
+		security_descriptor_dacl_add(sd, &ace);
+	}
+
+	return NT_STATUS_OK;
+}
+
+/*
+  save the acl for a file into system.nfs4acl
+*/
+static NTSTATUS pvfs_acl_save_nfs4(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd,
+				   struct security_descriptor *sd)
+{
+	NTSTATUS status;
+	void *privs;
+	struct nfs4acl acl;
+	int i;
+	TALLOC_CTX *tmp_ctx;
+	struct id_map *ids;
+
+	tmp_ctx = talloc_new(pvfs);
+	NT_STATUS_HAVE_NO_MEMORY(tmp_ctx);
+
+	acl.a_version = 0;
+	acl.a_flags   = sd->type;
+	acl.a_count   = sd->dacl?sd->dacl->num_aces:0;
+	acl.a_owner_mask = 0;
+	acl.a_group_mask = 0;
+	acl.a_other_mask = 0;
+
+	acl.ace = talloc_array(tmp_ctx, struct nfs4ace, acl.a_count);
+	if (!acl.ace) {
+		talloc_free(tmp_ctx);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	ids = talloc_array(tmp_ctx, struct id_map, acl.a_count);
+	if (ids == NULL) {
+		talloc_free(tmp_ctx);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	for (i=0;i<acl.a_count;i++) {
+		struct security_ace *ace = &sd->dacl->aces[i];
+		ZERO_STRUCT(ids[i].xid);
+		ids[i].sid = dom_sid_dup(ids, &ace->trustee);
+		if (ids[i].sid == NULL) {
+			talloc_free(tmp_ctx);
+			return NT_STATUS_NO_MEMORY;
+		}
+		ids[i].status = ID_UNKNOWN;
+	}
+
+	status = wbc_sids_to_xids(ids, acl.a_count);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(tmp_ctx);
+		return status;
+	}
+
+	for (i=0;i<acl.a_count;i++) {
+		struct nfs4ace *a = &acl.ace[i];
+		struct security_ace *ace = &sd->dacl->aces[i];
+		a->e_type  = ace->type;
+		a->e_flags = ace->flags;
+		a->e_mask  = ace->access_mask;
+		if (ids[i].xid.type != ID_TYPE_UID) {
+			a->e_flags |= ACE4_IDENTIFIER_GROUP;
+		}
+		a->e_id = ids[i].xid.id;
+		a->e_who   = "";
+	}
+
+	privs = root_privileges();
+	status = pvfs_xattr_ndr_save(pvfs, name->full_name, fd, 
+				     NFS4ACL_NDR_XATTR_NAME,
+				     &acl, (void *) ndr_push_nfs4acl);
+	talloc_free(privs);
+
+	talloc_free(tmp_ctx);
+	return status;
+}
+
+
+/*
+  initialise pvfs acl NFS4 backend
+*/
+NTSTATUS pvfs_acl_nfs4_init(TALLOC_CTX *ctx)
+{
+	struct pvfs_acl_ops ops = {
+		.name = "nfs4acl",
+		.acl_load = pvfs_acl_load_nfs4,
+		.acl_save = pvfs_acl_save_nfs4
+	};
+	return pvfs_acl_register(ctx, &ops);
+}
diff --git a/source4/ntvfs/posix/pvfs_acl_xattr.c b/source4/ntvfs/posix/pvfs_acl_xattr.c
new file mode 100644
index 0000000..1f569ca
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_acl_xattr.c
@@ -0,0 +1,104 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - NT ACLs in xattrs
+
+   Copyright (C) Andrew Tridgell 2006
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "../lib/util/unix_privs.h"
+#include "librpc/gen_ndr/ndr_xattr.h"
+
+NTSTATUS pvfs_acl_xattr_init(TALLOC_CTX *);
+
+/*
+  load the current ACL from extended attributes
+*/
+static NTSTATUS pvfs_acl_load_xattr(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd,
+				    TALLOC_CTX *mem_ctx,
+				    struct security_descriptor **sd)
+{
+	NTSTATUS status;
+	struct xattr_NTACL *acl;
+
+	if (!(pvfs->flags & PVFS_FLAG_XATTR_ENABLE)) {
+		return NT_STATUS_NOT_FOUND;
+	}
+
+	acl = talloc_zero(mem_ctx, struct xattr_NTACL);
+	NT_STATUS_HAVE_NO_MEMORY(acl);
+
+	status = pvfs_xattr_ndr_load(pvfs, mem_ctx, name->full_name, fd, 
+				     XATTR_NTACL_NAME,
+				     acl, (void *) ndr_pull_xattr_NTACL);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(acl);
+		return status;
+	}
+
+	if (acl->version != 1) {
+		talloc_free(acl);
+		return NT_STATUS_INVALID_ACL;
+	}
+	
+	*sd = talloc_steal(mem_ctx, acl->info.sd);
+
+	return NT_STATUS_OK;
+}
+
+/*
+  save the acl for a file into filesystem xattr
+*/
+static NTSTATUS pvfs_acl_save_xattr(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd,
+				    struct security_descriptor *sd)
+{
+	NTSTATUS status;
+	void *privs;
+	struct xattr_NTACL acl;
+
+	if (!(pvfs->flags & PVFS_FLAG_XATTR_ENABLE)) {
+		return NT_STATUS_OK;
+	}
+
+	acl.version = 1;
+	acl.info.sd = sd;
+
+	/* this xattr is in the "system" namespace, so we need
+	   admin privileges to set it */
+	privs = root_privileges();
+	status = pvfs_xattr_ndr_save(pvfs, name->full_name, fd, 
+				     XATTR_NTACL_NAME, 
+				     &acl, (void *) ndr_push_xattr_NTACL);
+	talloc_free(privs);
+	return status;
+}
+
+
+/*
+  initialise pvfs acl xattr backend
+*/
+NTSTATUS pvfs_acl_xattr_init(TALLOC_CTX *ctx)
+{
+	struct pvfs_acl_ops ops = {
+		.name = "xattr",
+		.acl_load = pvfs_acl_load_xattr,
+		.acl_save = pvfs_acl_save_xattr
+	};
+	return pvfs_acl_register(ctx, &ops);
+}
diff --git a/source4/ntvfs/posix/pvfs_dirlist.c b/source4/ntvfs/posix/pvfs_dirlist.c
new file mode 100644
index 0000000..1207287
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_dirlist.c
@@ -0,0 +1,411 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/*
+  directory listing functions for posix backend
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "system/dir.h"
+
+#define NAME_CACHE_SIZE 100
+
+struct name_cache_entry {
+	char *name;
+	off_t offset;
+};
+
+struct pvfs_dir {
+	struct pvfs_state *pvfs;
+	bool no_wildcard;
+	char *single_name;
+	const char *pattern;
+	off_t offset;
+	DIR *dir;
+	const char *unix_path;
+	bool end_of_search;
+	struct name_cache_entry *name_cache;
+	uint32_t name_cache_index;
+};
+
+/* these three numbers are chosen to minimise the chances of a bad
+   interaction with the OS value for 'end of directory'. On IRIX
+   telldir() returns 0xFFFFFFFF at the end of a directory, and that
+   caused an infinite loop with the original values of 0,1,2
+
+   On XFS on linux telldir returns 0x7FFFFFFF at the end of a
+   directory. Thus the change from 0x80000002, as otherwise
+   0x7FFFFFFF+0x80000002==1==DIR_OFFSET_DOTDOT
+*/
+#define DIR_OFFSET_DOT    0
+#define DIR_OFFSET_DOTDOT 1
+#define DIR_OFFSET_BASE   0x80000022
+
+/*
+  a special directory listing case where the pattern has no wildcard. We can just do a single stat()
+  thus avoiding the more expensive directory scan
+*/
+static NTSTATUS pvfs_list_no_wildcard(struct pvfs_state *pvfs, struct pvfs_filename *name,
+				      const char *pattern, struct pvfs_dir *dir)
+{
+	if (!name->exists) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	dir->pvfs = pvfs;
+	dir->no_wildcard = true;
+	dir->end_of_search = false;
+	dir->unix_path = talloc_strdup(dir, name->full_name);
+	if (!dir->unix_path) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	dir->single_name = talloc_strdup(dir, pattern);
+	if (!dir->single_name) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	dir->dir = NULL;
+	dir->offset = 0;
+	dir->pattern = NULL;
+
+	return NT_STATUS_OK;
+}
+
+/*
+  destroy an open search
+*/
+static int pvfs_dirlist_destructor(struct pvfs_dir *dir)
+{
+	if (dir->dir) closedir(dir->dir);
+	return 0;
+}
+
+/*
+  start to read a directory
+
+  if the pattern matches no files then we return NT_STATUS_OK, with dir->count = 0
+*/
+NTSTATUS pvfs_list_start(struct pvfs_state *pvfs, struct pvfs_filename *name,
+			 TALLOC_CTX *mem_ctx, struct pvfs_dir **dirp)
+{
+	char *pattern;
+	struct pvfs_dir *dir;
+
+	(*dirp) = talloc_zero(mem_ctx, struct pvfs_dir);
+	if (*dirp == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	dir = *dirp;
+
+	/* split the unix path into a directory + pattern */
+	pattern = strrchr(name->full_name, '/');
+	if (!pattern) {
+		/* this should not happen, as pvfs_unix_path is supposed to
+		   return an absolute path */
+		return NT_STATUS_UNSUCCESSFUL;
+	}
+
+	*pattern++ = 0;
+
+	if (!name->has_wildcard) {
+		return pvfs_list_no_wildcard(pvfs, name, pattern, dir);
+	}
+
+	dir->unix_path = talloc_strdup(dir, name->full_name);
+	if (!dir->unix_path) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	dir->pattern = talloc_strdup(dir, pattern);
+	if (dir->pattern == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	dir->dir = opendir(name->full_name);
+	if (!dir->dir) {
+		return pvfs_map_errno(pvfs, errno);
+	}
+
+	dir->pvfs = pvfs;
+	dir->no_wildcard = false;
+	dir->end_of_search = false;
+	dir->offset = DIR_OFFSET_DOT;
+	dir->name_cache = talloc_zero_array(dir,
+					    struct name_cache_entry,
+					    NAME_CACHE_SIZE);
+	if (dir->name_cache == NULL) {
+		talloc_free(dir);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	talloc_set_destructor(dir, pvfs_dirlist_destructor);
+
+	return NT_STATUS_OK;
+}
+
+/*
+  add an entry to the local cache
+*/
+static void dcache_add(struct pvfs_dir *dir, const char *name)
+{
+	struct name_cache_entry *e;
+
+	dir->name_cache_index = (dir->name_cache_index+1) % NAME_CACHE_SIZE;
+	e = &dir->name_cache[dir->name_cache_index];
+
+	if (e->name) talloc_free(e->name);
+
+	e->name = talloc_strdup(dir->name_cache, name);
+	e->offset = dir->offset;
+}
+
+/*
+   return the next entry
+*/
+const char *pvfs_list_next(struct pvfs_dir *dir, off_t *ofs)
+{
+	struct dirent *de;
+	enum protocol_types protocol = dir->pvfs->ntvfs->ctx->protocol;
+
+	/* non-wildcard searches are easy */
+	if (dir->no_wildcard) {
+		dir->end_of_search = true;
+		if (*ofs != 0) return NULL;
+		(*ofs)++;
+		return dir->single_name;
+	}
+
+	/* . and .. are handled separately as some unix systems will
+	   not return them first in a directory, but windows client
+	   may assume that these entries always appear first */
+	if (*ofs == DIR_OFFSET_DOT) {
+		(*ofs) = DIR_OFFSET_DOTDOT;
+		dir->offset = *ofs;
+		if (ms_fnmatch_protocol(dir->pattern, ".", protocol,
+					false) == 0) {
+			dcache_add(dir, ".");
+			return ".";
+		}
+	}
+
+	if (*ofs == DIR_OFFSET_DOTDOT) {
+		(*ofs) = DIR_OFFSET_BASE;
+		dir->offset = *ofs;
+		if (ms_fnmatch_protocol(dir->pattern, "..", protocol,
+					false) == 0) {
+			dcache_add(dir, "..");
+			return "..";
+		}
+	}
+
+	if (*ofs == DIR_OFFSET_BASE) {
+		rewinddir(dir->dir);
+	} else if (*ofs != dir->offset) {
+		seekdir(dir->dir, (*ofs) - DIR_OFFSET_BASE);
+	}
+	dir->offset = *ofs;
+
+	while ((de = readdir(dir->dir))) {
+		const char *dname = de->d_name;
+
+		if (ISDOT(dname) || ISDOTDOT(dname)) {
+			continue;
+		}
+
+		if (ms_fnmatch_protocol(dir->pattern, dname, protocol,
+					false) != 0) {
+			char *short_name = pvfs_short_name_component(dir->pvfs, dname);
+			if (short_name == NULL ||
+			    ms_fnmatch_protocol(dir->pattern, short_name,
+						protocol, false) != 0) {
+				talloc_free(short_name);
+				continue;
+			}
+			talloc_free(short_name);
+		}
+
+		/* Casting is necessary to avoid signed integer overflow. */
+		dir->offset = (unsigned long)telldir(dir->dir) + (unsigned long)DIR_OFFSET_BASE;
+		(*ofs) = dir->offset;
+
+		dcache_add(dir, dname);
+
+		return dname;
+	}
+
+	dir->end_of_search = true;
+	return NULL;
+}
+
+/*
+  return unix directory of an open search
+*/
+const char *pvfs_list_unix_path(struct pvfs_dir *dir)
+{
+	return dir->unix_path;
+}
+
+/*
+  return true if end of search has been reached
+*/
+bool pvfs_list_eos(struct pvfs_dir *dir, off_t ofs)
+{
+	return dir->end_of_search;
+}
+
+/*
+  seek to the given name
+*/
+NTSTATUS pvfs_list_seek(struct pvfs_dir *dir, const char *name, off_t *ofs)
+{
+	struct dirent *de;
+	int i;
+
+	dir->end_of_search = false;
+
+	if (ISDOT(name)) {
+		dir->offset = DIR_OFFSET_DOTDOT;
+		*ofs = dir->offset;
+		return NT_STATUS_OK;
+	}
+
+	if (ISDOTDOT(name)) {
+		dir->offset = DIR_OFFSET_BASE;
+		*ofs = dir->offset;
+		return NT_STATUS_OK;
+	}
+
+	for (i=dir->name_cache_index;i>=0;i--) {
+		struct name_cache_entry *e = &dir->name_cache[i];
+		if (e->name && strcasecmp_m(name, e->name) == 0) {
+			*ofs = e->offset;
+			return NT_STATUS_OK;
+		}
+	}
+	for (i=NAME_CACHE_SIZE-1;i>dir->name_cache_index;i--) {
+		struct name_cache_entry *e = &dir->name_cache[i];
+		if (e->name && strcasecmp_m(name, e->name) == 0) {
+			*ofs = e->offset;
+			return NT_STATUS_OK;
+		}
+	}
+
+	rewinddir(dir->dir);
+
+	while ((de = readdir(dir->dir))) {
+		if (strcasecmp_m(name, de->d_name) == 0) {
+			/* Casting is necessary to avoid signed integer overflow. */
+			dir->offset = (unsigned long)telldir(dir->dir) + (unsigned long)DIR_OFFSET_BASE;
+			*ofs = dir->offset;
+			return NT_STATUS_OK;
+		}
+	}
+
+	dir->end_of_search = true;
+
+	return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+}
+
+/*
+  seek to the given offset
+*/
+NTSTATUS pvfs_list_seek_ofs(struct pvfs_dir *dir, uint32_t resume_key, off_t *ofs)
+{
+	struct dirent *de;
+	int i;
+
+	dir->end_of_search = false;
+
+	if (resume_key == DIR_OFFSET_DOT) {
+		*ofs = DIR_OFFSET_DOTDOT;
+		return NT_STATUS_OK;
+	}
+
+	if (resume_key == DIR_OFFSET_DOTDOT) {
+		*ofs = DIR_OFFSET_BASE;
+		return NT_STATUS_OK;
+	}
+
+	if (resume_key == DIR_OFFSET_BASE) {
+		rewinddir(dir->dir);
+		if ((de=readdir(dir->dir)) == NULL) {
+			dir->end_of_search = true;
+			return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+		}
+		/* Casting is necessary to avoid signed integer overflow. */
+		*ofs = (unsigned long)telldir(dir->dir) + (unsigned long)DIR_OFFSET_BASE;
+		dir->offset = *ofs;
+		return NT_STATUS_OK;
+	}
+
+	for (i=dir->name_cache_index;i>=0;i--) {
+		struct name_cache_entry *e = &dir->name_cache[i];
+		if (resume_key == (uint32_t)e->offset) {
+			*ofs = e->offset;
+			return NT_STATUS_OK;
+		}
+	}
+	for (i=NAME_CACHE_SIZE-1;i>dir->name_cache_index;i--) {
+		struct name_cache_entry *e = &dir->name_cache[i];
+		if (resume_key == (uint32_t)e->offset) {
+			*ofs = e->offset;
+			return NT_STATUS_OK;
+		}
+	}
+
+	rewinddir(dir->dir);
+
+	while ((de = readdir(dir->dir))) {
+		/* Casting is necessary to avoid signed integer overflow. */
+		dir->offset = (unsigned long)telldir(dir->dir) + (unsigned long)DIR_OFFSET_BASE;
+		if (resume_key == (uint32_t)dir->offset) {
+			*ofs = dir->offset;
+			return NT_STATUS_OK;
+		}
+	}
+
+	dir->end_of_search = true;
+
+	return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+}
+
+
+/*
+  see if a directory is empty
+*/
+bool pvfs_directory_empty(struct pvfs_state *pvfs, struct pvfs_filename *name)
+{
+	struct dirent *de;
+	DIR *dir = opendir(name->full_name);
+	if (dir == NULL) {
+		return true;
+	}
+
+	while ((de = readdir(dir))) {
+		if (!ISDOT(de->d_name) && !ISDOTDOT(de->d_name)) {
+			closedir(dir);
+			return false;
+		}
+	}
+
+	closedir(dir);
+	return true;
+}
diff --git a/source4/ntvfs/posix/pvfs_fileinfo.c b/source4/ntvfs/posix/pvfs_fileinfo.c
new file mode 100644
index 0000000..977ea4f
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_fileinfo.c
@@ -0,0 +1,158 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - 
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "lib/util/time.h"
+
+/****************************************************************************
+ Change a unix mode to a dos mode.
+****************************************************************************/
+static uint32_t dos_mode_from_stat(struct pvfs_state *pvfs, struct stat *st)
+{
+	int result = 0;
+
+	if ((st->st_mode & S_IWUSR) == 0)
+		result |= FILE_ATTRIBUTE_READONLY;
+	
+	if ((pvfs->flags & PVFS_FLAG_MAP_ARCHIVE) && ((st->st_mode & S_IXUSR) != 0))
+		result |= FILE_ATTRIBUTE_ARCHIVE;
+	
+	if ((pvfs->flags & PVFS_FLAG_MAP_SYSTEM) && ((st->st_mode & S_IXGRP) != 0))
+		result |= FILE_ATTRIBUTE_SYSTEM;
+	
+	if ((pvfs->flags & PVFS_FLAG_MAP_HIDDEN) && ((st->st_mode & S_IXOTH) != 0))
+		result |= FILE_ATTRIBUTE_HIDDEN;
+  
+	if (S_ISDIR(st->st_mode))
+		result = FILE_ATTRIBUTE_DIRECTORY | (result & FILE_ATTRIBUTE_READONLY);
+
+	return result;
+}
+
+
+
+/*
+  fill in the dos file attributes for a file
+*/
+NTSTATUS pvfs_fill_dos_info(struct pvfs_state *pvfs, struct pvfs_filename *name,
+			    unsigned int flags, int fd)
+{
+	NTSTATUS status;
+	DATA_BLOB lkey;
+	NTTIME write_time;
+
+	/* make directories appear as size 0 with 1 link */
+	if (S_ISDIR(name->st.st_mode)) {
+		name->st.st_size = 0;
+		name->st.st_nlink = 1;
+	} else if (name->stream_id == 0) {
+		name->stream_name = NULL;
+	}
+
+	/* for now just use the simple samba mapping */
+	unix_to_nt_time(&name->dos.create_time, name->st.st_ctime);
+	unix_to_nt_time(&name->dos.access_time, name->st.st_atime);
+	unix_to_nt_time(&name->dos.write_time,  name->st.st_mtime);
+	unix_to_nt_time(&name->dos.change_time, name->st.st_ctime);
+	name->dos.create_time += get_ctimensec(&name->st) / 100;
+	name->dos.access_time += get_atimensec(&name->st) / 100;
+	name->dos.write_time  += get_mtimensec(&name->st) / 100;
+	name->dos.change_time += get_ctimensec(&name->st) / 100;
+	name->dos.attrib = dos_mode_from_stat(pvfs, &name->st);
+	name->dos.alloc_size = pvfs_round_alloc_size(pvfs, name->st.st_size);
+	name->dos.nlink = name->st.st_nlink;
+	name->dos.ea_size = 4;  /* TODO: Fill this in without hitting the stream bad in pvfs_doseas_load() */
+	if (pvfs->ntvfs->ctx->protocol >= PROTOCOL_SMB2_02) {
+		/* SMB2 represents a null EA with zero bytes */
+		name->dos.ea_size = 0;
+	}
+	
+	name->dos.file_id = (((uint64_t)name->st.st_dev)<<32) | name->st.st_ino;
+	name->dos.flags = 0;
+
+	status = pvfs_dosattrib_load(pvfs, name, fd);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	if (flags & PVFS_RESOLVE_NO_OPENDB) {
+		return NT_STATUS_OK;
+	}
+
+	status = pvfs_locking_key(name, name, &lkey);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	status = odb_get_file_infos(pvfs->odb_context, &lkey,
+				    NULL, &write_time);
+	data_blob_free(&lkey);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(1,("WARNING: odb_get_file_infos: %s\n", nt_errstr(status)));
+		return status;
+	}
+
+	if (!null_time(write_time)) {
+		name->dos.write_time = write_time;
+	}
+
+	return NT_STATUS_OK;
+}
+
+
+/*
+  return a set of unix file permissions for a new file or directory
+*/
+mode_t pvfs_fileperms(struct pvfs_state *pvfs, uint32_t attrib)
+{
+	mode_t mode = (S_IRUSR | S_IRGRP | S_IROTH | S_IWUSR | S_IWGRP | S_IWOTH);
+
+	if (!(pvfs->flags & PVFS_FLAG_XATTR_ENABLE) &&
+	    (attrib & FILE_ATTRIBUTE_READONLY)) {
+		mode &= ~(S_IWUSR | S_IWGRP | S_IWOTH);
+	}
+
+	if (!(pvfs->flags & PVFS_FLAG_XATTR_ENABLE)) {
+		if ((attrib & FILE_ATTRIBUTE_ARCHIVE) &&
+		    (pvfs->flags & PVFS_FLAG_MAP_ARCHIVE)) {
+			mode |= S_IXUSR;
+		}
+		if ((attrib & FILE_ATTRIBUTE_SYSTEM) &&
+		    (pvfs->flags & PVFS_FLAG_MAP_SYSTEM)) {
+			mode |= S_IXGRP;
+		}
+		if ((attrib & FILE_ATTRIBUTE_HIDDEN) &&
+		    (pvfs->flags & PVFS_FLAG_MAP_HIDDEN)) {
+			mode |= S_IXOTH;
+		}
+	}
+
+	if (attrib & FILE_ATTRIBUTE_DIRECTORY) {
+		mode |= (S_IFDIR | S_IWUSR);
+		mode |= (S_IXUSR | S_IXGRP | S_IXOTH);                 
+		mode &= pvfs->options.dir_mask;
+		mode |= pvfs->options.force_dir_mode;
+	} else {
+		mode &= pvfs->options.create_mask;
+		mode |= pvfs->options.force_create_mode;
+	}
+
+	return mode;
+}
+
+
diff --git a/source4/ntvfs/posix/pvfs_flush.c b/source4/ntvfs/posix/pvfs_flush.c
new file mode 100644
index 0000000..f425fcc
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_flush.c
@@ -0,0 +1,80 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - flush
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+
+/*
+  flush a single open file
+*/
+static void pvfs_flush_file(struct pvfs_state *pvfs, struct pvfs_file *f)
+{
+	if (f->handle->fd == -1) {
+		return;
+	}
+	if (pvfs->flags & PVFS_FLAG_STRICT_SYNC) {
+		fsync(f->handle->fd);
+	}
+}
+
+/*
+  flush a fnum
+*/
+NTSTATUS pvfs_flush(struct ntvfs_module_context *ntvfs,
+		    struct ntvfs_request *req,
+		    union smb_flush *io)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct pvfs_file *f;
+
+	switch (io->generic.level) {
+	case RAW_FLUSH_FLUSH:
+	case RAW_FLUSH_SMB2:
+		/* TODO: take care of io->smb2.in.unknown */
+		f = pvfs_find_fd(pvfs, req, io->generic.in.file.ntvfs);
+		if (!f) {
+			return NT_STATUS_INVALID_HANDLE;
+		}
+		pvfs_flush_file(pvfs, f);
+		io->smb2.out.reserved = 0;
+		return NT_STATUS_OK;
+
+	case RAW_FLUSH_ALL:
+		if (!(pvfs->flags & PVFS_FLAG_STRICT_SYNC)) {
+			return NT_STATUS_OK;
+		}
+
+		/* 
+		 * they are asking to flush all open files
+		 * for the given SMBPID
+		 */
+		for (f=pvfs->files.list;f;f=f->next) {
+			if (f->ntvfs->smbpid != req->smbpid) continue;
+
+			pvfs_flush_file(pvfs, f);
+		}
+
+		return NT_STATUS_OK;
+	}
+
+	return NT_STATUS_INVALID_LEVEL;
+}
diff --git a/source4/ntvfs/posix/pvfs_fsinfo.c b/source4/ntvfs/posix/pvfs_fsinfo.c
new file mode 100644
index 0000000..c355c19
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_fsinfo.c
@@ -0,0 +1,224 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - fsinfo
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "librpc/gen_ndr/xattr.h"
+#include "librpc/ndr/libndr.h"
+
+/* We use libblkid out of e2fsprogs to identify UUID of a volume */
+#ifdef HAVE_LIBBLKID
+#include <blkid/blkid.h>
+#endif
+
+static NTSTATUS pvfs_blkid_fs_uuid(struct pvfs_state *pvfs, struct stat *st, struct GUID *uuid)
+{
+#ifdef HAVE_LIBBLKID
+	NTSTATUS status;
+	char *uuid_value = NULL;
+	char *devname = NULL;
+
+	devname = blkid_devno_to_devname(st->st_dev);
+	if (!devname) {
+		ZERO_STRUCTP(uuid);
+		return NT_STATUS_OK;
+	}
+
+	uuid_value = blkid_get_tag_value(NULL, "UUID", devname);
+	free(devname);
+	if (!uuid_value) {
+		ZERO_STRUCTP(uuid);
+		return NT_STATUS_OK;
+	}
+
+	status = GUID_from_string(uuid_value, uuid);
+	free(uuid_value);
+	if (!NT_STATUS_IS_OK(status)) {
+		ZERO_STRUCTP(uuid);
+		return NT_STATUS_OK;
+	}
+	return NT_STATUS_OK;
+#else
+	ZERO_STRUCTP(uuid);
+	return NT_STATUS_OK;
+#endif
+}
+
+static NTSTATUS pvfs_cache_base_fs_uuid(struct pvfs_state *pvfs, struct stat *st)
+{
+	NTSTATUS status;
+	struct GUID uuid;
+
+	if (pvfs->base_fs_uuid) return NT_STATUS_OK;
+
+	status = pvfs_blkid_fs_uuid(pvfs, st, &uuid);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	pvfs->base_fs_uuid = talloc(pvfs, struct GUID);
+	NT_STATUS_HAVE_NO_MEMORY(pvfs->base_fs_uuid);
+	*pvfs->base_fs_uuid = uuid;
+
+	return NT_STATUS_OK;
+}
+/*
+  return filesystem space info
+*/
+NTSTATUS pvfs_fsinfo(struct ntvfs_module_context *ntvfs,
+		     struct ntvfs_request *req, union smb_fsinfo *fs)
+{
+	NTSTATUS status;
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	uint64_t blocks_free, blocks_total;
+	unsigned int bpunit;
+	struct stat st;
+	const uint16_t block_size = 512;
+
+	/* only some levels need the expensive sys_fsusage() call */
+	switch (fs->generic.level) {
+	case RAW_QFS_DSKATTR:
+	case RAW_QFS_ALLOCATION:
+	case RAW_QFS_SIZE_INFO:
+	case RAW_QFS_SIZE_INFORMATION:
+	case RAW_QFS_FULL_SIZE_INFORMATION:
+		if (sys_fsusage(pvfs->base_directory, &blocks_free, &blocks_total) == -1) {
+			return pvfs_map_errno(pvfs, errno);
+		}
+		break;
+	default:
+		break;
+	}
+
+	if (stat(pvfs->base_directory, &st) != 0) {
+		return NT_STATUS_DISK_CORRUPT_ERROR;
+	}
+
+	/* now fill in the out fields */
+	switch (fs->generic.level) {
+	case RAW_QFS_GENERIC:
+		return NT_STATUS_INVALID_LEVEL;
+
+	case RAW_QFS_DSKATTR:
+		/* we need to scale the sizes to fit */
+		for (bpunit=64; bpunit<0x10000; bpunit *= 2) {
+			if (blocks_total * (double)block_size < bpunit * 512 * 65535.0) {
+				break;
+			}
+		}
+		fs->dskattr.out.blocks_per_unit = bpunit;
+		fs->dskattr.out.block_size = block_size;
+		fs->dskattr.out.units_total = (blocks_total * (double)block_size) / (bpunit * 512);
+		fs->dskattr.out.units_free  = (blocks_free  * (double)block_size) / (bpunit * 512);
+
+		/* we must return a maximum of 2G to old DOS systems, or they get very confused */
+		if (bpunit > 64 && req->ctx->protocol <= PROTOCOL_LANMAN2) {
+			fs->dskattr.out.blocks_per_unit = 64;
+			fs->dskattr.out.units_total = 0xFFFF;
+			fs->dskattr.out.units_free = 0xFFFF;
+		}
+		return NT_STATUS_OK;
+
+	case RAW_QFS_ALLOCATION:
+		fs->allocation.out.fs_id = st.st_dev;
+		fs->allocation.out.total_alloc_units = blocks_total;
+		fs->allocation.out.avail_alloc_units = blocks_free;
+		fs->allocation.out.sectors_per_unit = 1;
+		fs->allocation.out.bytes_per_sector = block_size;
+		return NT_STATUS_OK;
+
+	case RAW_QFS_VOLUME:
+		fs->volume.out.serial_number = st.st_ino;
+		fs->volume.out.volume_name.s = pvfs->share_name;
+		return NT_STATUS_OK;
+
+	case RAW_QFS_VOLUME_INFO:
+	case RAW_QFS_VOLUME_INFORMATION:
+		unix_to_nt_time(&fs->volume_info.out.create_time, st.st_ctime);
+		fs->volume_info.out.serial_number = st.st_ino;
+		fs->volume_info.out.volume_name.s = pvfs->share_name;
+		return NT_STATUS_OK;
+
+	case RAW_QFS_SIZE_INFO:
+	case RAW_QFS_SIZE_INFORMATION:
+		fs->size_info.out.total_alloc_units = blocks_total;
+		fs->size_info.out.avail_alloc_units = blocks_free;
+		fs->size_info.out.sectors_per_unit = 1;
+		fs->size_info.out.bytes_per_sector = block_size;
+		return NT_STATUS_OK;
+
+	case RAW_QFS_DEVICE_INFO:
+	case RAW_QFS_DEVICE_INFORMATION:
+		fs->device_info.out.device_type = 0;
+		fs->device_info.out.characteristics = 0;
+		return NT_STATUS_OK;
+
+	case RAW_QFS_ATTRIBUTE_INFO:
+	case RAW_QFS_ATTRIBUTE_INFORMATION:
+		fs->attribute_info.out.fs_attr                   = pvfs->fs_attribs;
+		fs->attribute_info.out.max_file_component_length = 255;
+		fs->attribute_info.out.fs_type.s                 = ntvfs->ctx->fs_type;
+		return NT_STATUS_OK;
+
+	case RAW_QFS_QUOTA_INFORMATION:
+		ZERO_STRUCT(fs->quota_information.out.unknown);
+		fs->quota_information.out.quota_soft = 0;
+		fs->quota_information.out.quota_hard = 0;
+		fs->quota_information.out.quota_flags = 0;
+		return NT_STATUS_OK;
+
+	case RAW_QFS_FULL_SIZE_INFORMATION:
+		fs->full_size_information.out.total_alloc_units = blocks_total;
+		fs->full_size_information.out.call_avail_alloc_units = blocks_free;
+		fs->full_size_information.out.actual_avail_alloc_units = blocks_free;
+		fs->full_size_information.out.sectors_per_unit = 1;
+		fs->full_size_information.out.bytes_per_sector = block_size;
+		return NT_STATUS_OK;
+
+	case RAW_QFS_OBJECTID_INFORMATION:
+		ZERO_STRUCT(fs->objectid_information.out.guid);
+		ZERO_STRUCT(fs->objectid_information.out.unknown);
+
+		status = pvfs_cache_base_fs_uuid(pvfs, &st);
+		NT_STATUS_NOT_OK_RETURN(status);
+
+		fs->objectid_information.out.guid = *pvfs->base_fs_uuid;
+		return NT_STATUS_OK;
+
+	case RAW_QFS_SECTOR_SIZE_INFORMATION:
+		fs->sector_size_info.out.logical_bytes_per_sector = block_size;
+		fs->sector_size_info.out.phys_bytes_per_sector_atomic
+								= block_size;
+		fs->sector_size_info.out.phys_bytes_per_sector_perf
+								= block_size;
+		fs->sector_size_info.out.fs_effective_phys_bytes_per_sector_atomic
+								= block_size;
+		fs->sector_size_info.out.flags
+					= QFS_SSINFO_FLAGS_ALIGNED_DEVICE
+				| QFS_SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE;
+		fs->sector_size_info.out.byte_off_sector_align = 0;
+		fs->sector_size_info.out.byte_off_partition_align = 0;
+		return NT_STATUS_OK;
+
+	default:
+		break;
+	}
+	return NT_STATUS_INVALID_LEVEL;
+}
diff --git a/source4/ntvfs/posix/pvfs_ioctl.c b/source4/ntvfs/posix/pvfs_ioctl.c
new file mode 100644
index 0000000..1d5e8fd
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_ioctl.c
@@ -0,0 +1,82 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - open and close
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "../libcli/smb/smb_constants.h"
+
+/*
+  old ioctl interface 
+*/
+static NTSTATUS pvfs_ioctl_old(struct ntvfs_module_context *ntvfs,
+			struct ntvfs_request *req, union smb_ioctl *io)
+{
+	return NT_STATUS_DOS(ERRSRV, ERRerror);
+}
+
+/*
+  nt ioctl interface 
+*/
+static NTSTATUS pvfs_ntioctl(struct ntvfs_module_context *ntvfs,
+			     struct ntvfs_request *req, union smb_ioctl *io)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct pvfs_file *f;
+
+	f = pvfs_find_fd(pvfs, req, io->ntioctl.in.file.ntvfs);
+	if (!f) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	switch (io->ntioctl.in.function) {
+	case FSCTL_SET_SPARSE:
+		/* maybe some posix systems have a way of marking
+		   a file non-sparse? */
+		io->ntioctl.out.blob = data_blob(NULL, 0);
+		return NT_STATUS_OK;
+	}
+
+	return NT_STATUS_NOT_SUPPORTED;
+}
+
+/*
+  ioctl interface 
+*/
+NTSTATUS pvfs_ioctl(struct ntvfs_module_context *ntvfs,
+		    struct ntvfs_request *req,
+		    union smb_ioctl *io)
+{
+	switch (io->generic.level) {
+	case RAW_IOCTL_IOCTL:
+		return pvfs_ioctl_old(ntvfs, req, io);
+
+	case RAW_IOCTL_NTIOCTL:
+		return pvfs_ntioctl(ntvfs, req, io);
+
+	case RAW_IOCTL_SMB2:
+	case RAW_IOCTL_SMB2_NO_HANDLE:
+		/* see WSPP SMB2 test 46 */
+		return NT_STATUS_INVALID_DEVICE_REQUEST;
+	}
+
+	return NT_STATUS_INVALID_LEVEL;
+}
diff --git a/source4/ntvfs/posix/pvfs_lock.c b/source4/ntvfs/posix/pvfs_lock.c
new file mode 100644
index 0000000..0802ded
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_lock.c
@@ -0,0 +1,404 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - locking
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "system/time.h"
+#include "../lib/util/dlinklist.h"
+#include "messaging/messaging.h"
+
+
+/*
+  check if we can perform IO on a range that might be locked
+*/
+NTSTATUS pvfs_check_lock(struct pvfs_state *pvfs,
+			 struct pvfs_file *f,
+			 uint32_t smbpid,
+			 uint64_t offset, uint64_t count,
+			 enum brl_type rw)
+{
+	if (!(pvfs->flags & PVFS_FLAG_STRICT_LOCKING)) {
+		return NT_STATUS_OK;
+	}
+
+	return brlock_locktest(pvfs->brl_context,
+			    f->brl_handle,
+			    smbpid,
+			    offset, count, rw);
+}
+
+/* this state structure holds information about a lock we are waiting on */
+struct pvfs_pending_lock {
+	struct pvfs_pending_lock *next, *prev;
+	struct pvfs_state *pvfs;
+	union smb_lock *lck;
+	struct pvfs_file *f;
+	struct ntvfs_request *req;
+	int pending_lock;
+	struct pvfs_wait *wait_handle;
+	struct timeval end_time;
+};
+
+/*
+  a secondary attempt to setup a lock has failed - back out
+  the locks we did get and send an error
+*/
+static void pvfs_lock_async_failed(struct pvfs_state *pvfs,
+				   struct ntvfs_request *req,
+				   struct pvfs_file *f,
+				   struct smb_lock_entry *locks,
+				   int i,
+				   NTSTATUS status)
+{
+	/* undo the locks we just did */
+	for (i--;i>=0;i--) {
+		brlock_unlock(pvfs->brl_context,
+			   f->brl_handle,
+			   locks[i].pid,
+			   locks[i].offset,
+			   locks[i].count);
+		f->lock_count--;
+	}
+	req->async_states->status = status;
+	req->async_states->send_fn(req);
+}
+
+
+/*
+  called when we receive a pending lock notification. It means that
+  either our lock timed out or someone else has unlocked a overlapping
+  range, so we should try the lock again. Note that on timeout we
+  do retry the lock, giving it a last chance.
+*/
+static void pvfs_pending_lock_continue(void *private_data, enum pvfs_wait_notice reason)
+{
+	struct pvfs_pending_lock *pending = talloc_get_type(private_data,
+					    struct pvfs_pending_lock);
+	struct pvfs_state *pvfs = pending->pvfs;
+	struct pvfs_file *f = pending->f;
+	struct ntvfs_request *req = pending->req;
+	union smb_lock *lck = pending->lck;
+	struct smb_lock_entry *locks;
+	enum brl_type rw;
+	NTSTATUS status;
+	int i;
+	bool timed_out;
+
+	timed_out = (reason != PVFS_WAIT_EVENT);
+
+	locks = lck->lockx.in.locks + lck->lockx.in.ulock_cnt;
+
+	if (lck->lockx.in.mode & LOCKING_ANDX_SHARED_LOCK) {
+		rw = READ_LOCK;
+	} else {
+		rw = WRITE_LOCK;
+	}
+
+	DLIST_REMOVE(f->pending_list, pending);
+
+	/* we don't retry on a cancel */
+	if (reason == PVFS_WAIT_CANCEL) {
+		if (pvfs->ntvfs->ctx->protocol < PROTOCOL_SMB2_02) {
+			status = NT_STATUS_FILE_LOCK_CONFLICT;
+		} else {
+			status = NT_STATUS_CANCELLED;
+		}
+	} else {
+		/* 
+		 * here it's important to pass the pending pointer
+		 * because with this we'll get the correct error code
+		 * FILE_LOCK_CONFLICT in the error case
+		 */
+		status = brlock_lock(pvfs->brl_context,
+				  f->brl_handle,
+				  locks[pending->pending_lock].pid,
+				  locks[pending->pending_lock].offset,
+				  locks[pending->pending_lock].count,
+				  rw, pending);
+	}
+	if (NT_STATUS_IS_OK(status)) {
+		f->lock_count++;
+		timed_out = false;
+	}
+
+	/* if we have failed and timed out, or succeeded, then we
+	   don't need the pending lock any more */
+	if (NT_STATUS_IS_OK(status) || timed_out) {
+		NTSTATUS status2;
+		status2 = brlock_remove_pending(pvfs->brl_context, 
+					     f->brl_handle, pending);
+		if (!NT_STATUS_IS_OK(status2)) {
+			DEBUG(0,("pvfs_lock: failed to remove pending lock - %s\n", nt_errstr(status2)));
+		}
+		talloc_free(pending->wait_handle);
+	}
+
+	if (!NT_STATUS_IS_OK(status)) {
+		if (timed_out) {
+			/* no more chances */
+			pvfs_lock_async_failed(pvfs, req, f, locks, pending->pending_lock, status);
+			talloc_free(pending);
+		} else {
+			/* we can try again */
+			DLIST_ADD(f->pending_list, pending);
+		}
+		return;
+	}
+
+	/* if we haven't timed out yet, then we can do more pending locks */
+	if (rw == READ_LOCK) {
+		rw = PENDING_READ_LOCK;
+	} else {
+		rw = PENDING_WRITE_LOCK;
+	}
+
+	/* we've now got the pending lock. try and get the rest, which might
+	   lead to more pending locks */
+	for (i=pending->pending_lock+1;i<lck->lockx.in.lock_cnt;i++) {		
+		pending->pending_lock = i;
+
+		status = brlock_lock(pvfs->brl_context,
+				  f->brl_handle,
+				  locks[i].pid,
+				  locks[i].offset,
+				  locks[i].count,
+				  rw, pending);
+		if (!NT_STATUS_IS_OK(status)) {
+			/* a timed lock failed - setup a wait message to handle
+			   the pending lock notification or a timeout */
+			pending->wait_handle = pvfs_wait_message(pvfs, req, MSG_BRL_RETRY,
+								 pending->end_time,
+								 pvfs_pending_lock_continue,
+								 pending);
+			if (pending->wait_handle == NULL) {
+				pvfs_lock_async_failed(pvfs, req, f, locks, i, NT_STATUS_NO_MEMORY);
+				talloc_free(pending);
+			} else {
+				talloc_steal(pending, pending->wait_handle);
+				DLIST_ADD(f->pending_list, pending);
+			}
+			return;
+		}
+
+		f->lock_count++;
+	}
+
+	/* we've managed to get all the locks. Tell the client */
+	req->async_states->status = NT_STATUS_OK;
+	req->async_states->send_fn(req);
+	talloc_free(pending);
+}
+
+
+/*
+  called when we close a file that might have locks
+*/
+void pvfs_lock_close(struct pvfs_state *pvfs, struct pvfs_file *f)
+{
+	struct pvfs_pending_lock *p, *next;
+
+	if (f->lock_count || f->pending_list) {
+		DEBUG(5,("pvfs_lock: removing %.0f locks on close\n", 
+			 (double)f->lock_count));
+		brlock_close(f->pvfs->brl_context, f->brl_handle);
+		f->lock_count = 0;
+	}
+
+	/* reply to all the pending lock requests, telling them the 
+	   lock failed */
+	for (p=f->pending_list;p;p=next) {
+		next = p->next;
+		DLIST_REMOVE(f->pending_list, p);
+		p->req->async_states->status = NT_STATUS_RANGE_NOT_LOCKED;
+		p->req->async_states->send_fn(p->req);
+	}
+}
+
+
+/*
+  cancel a set of locks
+*/
+static NTSTATUS pvfs_lock_cancel(struct pvfs_state *pvfs, struct ntvfs_request *req, union smb_lock *lck,
+				 struct pvfs_file *f)
+{
+	struct pvfs_pending_lock *p;
+
+	for (p=f->pending_list;p;p=p->next) {
+		/* check if the lock request matches exactly - you can only cancel with exact matches */
+		if (p->lck->lockx.in.ulock_cnt == lck->lockx.in.ulock_cnt &&
+		    p->lck->lockx.in.lock_cnt  == lck->lockx.in.lock_cnt &&
+		    p->lck->lockx.in.file.ntvfs== lck->lockx.in.file.ntvfs &&
+		    p->lck->lockx.in.mode      == (lck->lockx.in.mode & ~LOCKING_ANDX_CANCEL_LOCK)) {
+			int i;
+
+			for (i=0;i<lck->lockx.in.ulock_cnt + lck->lockx.in.lock_cnt;i++) {
+				if (p->lck->lockx.in.locks[i].pid != lck->lockx.in.locks[i].pid ||
+				    p->lck->lockx.in.locks[i].offset != lck->lockx.in.locks[i].offset ||
+				    p->lck->lockx.in.locks[i].count != lck->lockx.in.locks[i].count) {
+					break;
+				}
+			}
+			if (i < lck->lockx.in.ulock_cnt) continue;
+
+			/* an exact match! we can cancel it, which is equivalent
+			   to triggering the timeout early */
+			pvfs_pending_lock_continue(p, PVFS_WAIT_TIMEOUT);
+			return NT_STATUS_OK;
+		}
+	}
+
+	return NT_STATUS_DOS(ERRDOS, ERRcancelviolation);
+}
+
+
+/*
+  lock or unlock a byte range
+*/
+NTSTATUS pvfs_lock(struct ntvfs_module_context *ntvfs,
+		   struct ntvfs_request *req, union smb_lock *lck)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct pvfs_file *f;
+	struct smb_lock_entry *locks;
+	int i;
+	enum brl_type rw;
+	struct pvfs_pending_lock *pending = NULL;
+	NTSTATUS status;
+
+	if (lck->generic.level != RAW_LOCK_GENERIC) {
+		return ntvfs_map_lock(ntvfs, req, lck);
+	}
+
+	if (lck->lockx.in.mode & LOCKING_ANDX_OPLOCK_RELEASE) {
+		return pvfs_oplock_release(ntvfs, req, lck);
+	}
+
+	f = pvfs_find_fd(pvfs, req, lck->lockx.in.file.ntvfs);
+	if (!f) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	if (f->handle->fd == -1) {
+		return NT_STATUS_FILE_IS_A_DIRECTORY;
+	}
+
+	status = pvfs_break_level2_oplocks(f);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	if (lck->lockx.in.timeout != 0 && 
+	    (req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		pending = talloc(f, struct pvfs_pending_lock);
+		if (pending == NULL) {
+			return NT_STATUS_NO_MEMORY;
+		}
+
+		pending->pvfs = pvfs;
+		pending->lck = lck;
+		pending->f = f;
+		pending->req = req;
+
+		pending->end_time = 
+			timeval_current_ofs_msec(lck->lockx.in.timeout);
+	}
+
+	if (lck->lockx.in.mode & LOCKING_ANDX_SHARED_LOCK) {
+		rw = pending? PENDING_READ_LOCK : READ_LOCK;
+	} else {
+		rw = pending? PENDING_WRITE_LOCK : WRITE_LOCK;
+	}
+
+	if (lck->lockx.in.mode & LOCKING_ANDX_CANCEL_LOCK) {
+		talloc_free(pending);
+		return pvfs_lock_cancel(pvfs, req, lck, f);
+	}
+
+	if (lck->lockx.in.mode & LOCKING_ANDX_CHANGE_LOCKTYPE) {
+		/* this seems to not be supported by any windows server,
+		   or used by any clients */
+		talloc_free(pending);
+		return NT_STATUS_DOS(ERRDOS, ERRnoatomiclocks);
+	}
+
+	/* the unlocks happen first */
+	locks = lck->lockx.in.locks;
+
+	for (i=0;i<lck->lockx.in.ulock_cnt;i++) {
+		status = brlock_unlock(pvfs->brl_context,
+				    f->brl_handle,
+				    locks[i].pid,
+				    locks[i].offset,
+				    locks[i].count);
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(pending);
+			return status;
+		}
+		f->lock_count--;
+	}
+
+	locks += i;
+
+	for (i=0;i<lck->lockx.in.lock_cnt;i++) {
+		if (pending) {
+			pending->pending_lock = i;
+		}
+
+		status = brlock_lock(pvfs->brl_context,
+				  f->brl_handle,
+				  locks[i].pid,
+				  locks[i].offset,
+				  locks[i].count,
+				  rw, pending);
+		if (!NT_STATUS_IS_OK(status)) {
+			if (pending) {
+				/* a timed lock failed - setup a wait message to handle
+				   the pending lock notification or a timeout */
+				pending->wait_handle = pvfs_wait_message(pvfs, req, MSG_BRL_RETRY, 
+									 pending->end_time,
+									 pvfs_pending_lock_continue,
+									 pending);
+				if (pending->wait_handle == NULL) {
+					talloc_free(pending);
+					return NT_STATUS_NO_MEMORY;
+				}
+				talloc_steal(pending, pending->wait_handle);
+				DLIST_ADD(f->pending_list, pending);
+				return NT_STATUS_OK;
+			}
+
+			/* undo the locks we just did */
+			for (i--;i>=0;i--) {
+				brlock_unlock(pvfs->brl_context,
+					   f->brl_handle,
+					   locks[i].pid,
+					   locks[i].offset,
+					   locks[i].count);
+				f->lock_count--;
+			}
+			talloc_free(pending);
+			return status;
+		}
+		f->lock_count++;
+	}
+
+	talloc_free(pending);
+	return NT_STATUS_OK;
+}
diff --git a/source4/ntvfs/posix/pvfs_mkdir.c b/source4/ntvfs/posix/pvfs_mkdir.c
new file mode 100644
index 0000000..2cf43ab
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_mkdir.c
@@ -0,0 +1,196 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - mkdir and rmdir
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "system/dir.h"
+#include "vfs_posix.h"
+#include "librpc/gen_ndr/security.h"
+
+/*
+  create a directory with EAs
+*/
+static NTSTATUS pvfs_t2mkdir(struct pvfs_state *pvfs,
+			     struct ntvfs_request *req, union smb_mkdir *md)
+{
+	NTSTATUS status;
+	struct pvfs_filename *name;
+	mode_t mode;
+
+	/* resolve the cifs name to a posix name */
+	status = pvfs_resolve_name(pvfs, req, md->t2mkdir.in.path, 0, &name);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	if (name->exists) {
+		return NT_STATUS_OBJECT_NAME_COLLISION;
+	}
+
+	status = pvfs_access_check_parent(pvfs, req, name, SEC_DIR_ADD_FILE);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	mode = pvfs_fileperms(pvfs, FILE_ATTRIBUTE_DIRECTORY);
+
+	if (pvfs_sys_mkdir(pvfs, name->full_name, mode, name->allow_override) == -1) {
+		return pvfs_map_errno(pvfs, errno);
+	}
+
+	pvfs_xattr_unlink_hook(pvfs, name->full_name);
+
+	status = pvfs_resolve_name(pvfs, req, md->t2mkdir.in.path, 0, &name);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+	if (!name->exists ||
+	    !(name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY)) {
+		return NT_STATUS_INTERNAL_ERROR;
+	}
+
+	/* setup an inherited acl from the parent */
+	status = pvfs_acl_inherit(pvfs, req, name, -1);
+	if (!NT_STATUS_IS_OK(status)) {
+		pvfs_sys_rmdir(pvfs, name->full_name, name->allow_override);
+		return status;
+	}
+
+	/* setup any EAs that were asked for */
+	status = pvfs_setfileinfo_ea_set(pvfs, name, -1, 
+					 md->t2mkdir.in.num_eas,
+					 md->t2mkdir.in.eas);
+	if (!NT_STATUS_IS_OK(status)) {
+		pvfs_sys_rmdir(pvfs, name->full_name, name->allow_override);
+		return status;
+	}
+
+	notify_trigger(pvfs->notify_context, 
+		       NOTIFY_ACTION_ADDED, 
+		       FILE_NOTIFY_CHANGE_DIR_NAME,
+		       name->full_name);
+
+	return NT_STATUS_OK;
+}
+
+/*
+  create a directory
+*/
+NTSTATUS pvfs_mkdir(struct ntvfs_module_context *ntvfs,
+		    struct ntvfs_request *req, union smb_mkdir *md)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	NTSTATUS status;
+	struct pvfs_filename *name;
+	mode_t mode;
+
+	if (md->generic.level == RAW_MKDIR_T2MKDIR) {
+		return pvfs_t2mkdir(pvfs, req, md);
+	}
+
+	if (md->generic.level != RAW_MKDIR_MKDIR) {
+		return NT_STATUS_INVALID_LEVEL;
+	}
+
+	/* resolve the cifs name to a posix name */
+	status = pvfs_resolve_name(pvfs, req, md->mkdir.in.path, 0, &name);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	if (name->exists) {
+		return NT_STATUS_OBJECT_NAME_COLLISION;
+	}
+
+	status = pvfs_access_check_parent(pvfs, req, name, SEC_DIR_ADD_FILE);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	mode = pvfs_fileperms(pvfs, FILE_ATTRIBUTE_DIRECTORY);
+
+	if (pvfs_sys_mkdir(pvfs, name->full_name, mode, name->allow_override) == -1) {
+		return pvfs_map_errno(pvfs, errno);
+	}
+
+	pvfs_xattr_unlink_hook(pvfs, name->full_name);
+
+	/* setup an inherited acl from the parent */
+	status = pvfs_acl_inherit(pvfs, req, name, -1);
+	if (!NT_STATUS_IS_OK(status)) {
+		pvfs_sys_rmdir(pvfs, name->full_name, name->allow_override);
+		return status;
+	}
+
+	notify_trigger(pvfs->notify_context, 
+		       NOTIFY_ACTION_ADDED, 
+		       FILE_NOTIFY_CHANGE_DIR_NAME,
+		       name->full_name);
+
+	return NT_STATUS_OK;
+}
+
+/*
+  remove a directory
+*/
+NTSTATUS pvfs_rmdir(struct ntvfs_module_context *ntvfs,
+		    struct ntvfs_request *req, struct smb_rmdir *rd)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	NTSTATUS status;
+	struct pvfs_filename *name;
+
+	/* resolve the cifs name to a posix name */
+	status = pvfs_resolve_name(pvfs, req, rd->in.path, 0, &name);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	if (!name->exists) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	status = pvfs_access_check_simple(pvfs, req, name, SEC_STD_DELETE);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	status = pvfs_xattr_unlink_hook(pvfs, name->full_name);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	if (pvfs_sys_rmdir(pvfs, name->full_name, name->allow_override) == -1) {
+		/* some olders systems don't return ENOTEMPTY to rmdir() */
+		if (errno == EEXIST) {
+			return NT_STATUS_DIRECTORY_NOT_EMPTY;
+		}
+		return pvfs_map_errno(pvfs, errno);
+	}
+
+	notify_trigger(pvfs->notify_context, 
+		       NOTIFY_ACTION_REMOVED, 
+		       FILE_NOTIFY_CHANGE_DIR_NAME,
+		       name->full_name);
+
+	return NT_STATUS_OK;
+}
diff --git a/source4/ntvfs/posix/pvfs_notify.c b/source4/ntvfs/posix/pvfs_notify.c
new file mode 100644
index 0000000..91a151b
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_notify.c
@@ -0,0 +1,300 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - notify
+
+   Copyright (C) Andrew Tridgell 2006
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "lib/messaging/irpc.h"
+#include "messaging/messaging.h"
+#include "../lib/util/dlinklist.h"
+#include "lib/events/events.h"
+
+/* pending notifies buffer, hung off struct pvfs_file for open directories
+   that have used change notify */
+struct pvfs_notify_buffer {
+	struct pvfs_file *f;
+	uint32_t num_changes;
+	struct notify_changes *changes;
+	uint32_t max_buffer_size;
+	uint32_t current_buffer_size;
+	bool overflowed;
+
+	/* a list of requests waiting for events on this handle */
+	struct notify_pending {
+		struct notify_pending *next, *prev;
+		struct ntvfs_request *req;
+		union smb_notify *info;
+	} *pending;
+};
+
+/*
+  send a notify on the next event run. 
+*/
+static void pvfs_notify_send_next(struct tevent_context *ev, struct tevent_timer *te, 
+				  struct timeval t, void *ptr)
+{
+	struct ntvfs_request *req = talloc_get_type(ptr, struct ntvfs_request);
+	req->async_states->send_fn(req);
+}
+
+
+/*
+  send a reply to a pending notify request
+*/
+static void pvfs_notify_send(struct pvfs_notify_buffer *notify_buffer, 
+			     NTSTATUS status, bool immediate)
+{
+	struct notify_pending *pending = notify_buffer->pending;
+	struct ntvfs_request *req;
+	union smb_notify *info;
+
+	if (notify_buffer->current_buffer_size > notify_buffer->max_buffer_size && 
+	    notify_buffer->num_changes != 0) {
+		/* on buffer overflow return no changes and destroys the notify buffer */
+		notify_buffer->num_changes = 0;
+		while (notify_buffer->pending) {
+			pvfs_notify_send(notify_buffer, NT_STATUS_OK, immediate);
+		}
+		notify_buffer->overflowed = true;
+		return;
+	}
+
+	/* see if there is anyone waiting */
+	if (notify_buffer->pending == NULL) {
+		return;
+	}
+
+	DLIST_REMOVE(notify_buffer->pending, pending);
+
+	req = pending->req;
+	info = pending->info;
+
+	info->nttrans.out.num_changes = notify_buffer->num_changes;
+	info->nttrans.out.changes = talloc_steal(req, notify_buffer->changes);
+	notify_buffer->num_changes = 0;
+	notify_buffer->overflowed = false;
+	notify_buffer->changes = NULL;
+	notify_buffer->current_buffer_size = 0;
+
+	talloc_free(pending);
+
+	if (info->nttrans.out.num_changes != 0) {
+		status = NT_STATUS_OK;
+	}
+
+	req->async_states->status = status;
+
+	if (immediate) {
+		req->async_states->send_fn(req);
+		return;
+	} 
+
+	/* we can't call pvfs_notify_send() directly here, as that
+	   would free the request, and the ntvfs modules above us
+	   could use it, so call it on the next event */
+	tevent_add_timer(req->ctx->event_ctx,
+			req, timeval_zero(), pvfs_notify_send_next, req);
+}
+
+/*
+  destroy a notify buffer. Called when the handle is closed
+ */
+static int pvfs_notify_destructor(struct pvfs_notify_buffer *n)
+{
+	notify_remove(n->f->pvfs->notify_context, n);
+	n->f->notify_buffer = NULL;
+	pvfs_notify_send(n, NT_STATUS_OK, true);
+	return 0;
+}
+
+
+/*
+  called when a async notify event comes in
+*/
+static void pvfs_notify_callback(void *private_data, const struct notify_event *ev)
+{
+	struct pvfs_notify_buffer *n = talloc_get_type(private_data, struct pvfs_notify_buffer);
+	size_t len;
+	struct notify_changes *n2;
+	char *new_path;
+
+	if (n->overflowed) {
+		return;
+	}
+
+	n2 = talloc_realloc(n, n->changes, struct notify_changes, n->num_changes+1);
+	if (n2 == NULL) {
+		/* nothing much we can do for this */
+		return;
+	}
+	n->changes = n2;
+
+	new_path = talloc_strdup(n->changes, ev->path);
+	if (new_path == NULL) {
+		return;
+	}
+	string_replace(new_path, '/', '\\');
+
+	n->changes[n->num_changes].action = ev->action;
+	n->changes[n->num_changes].name.s = new_path;
+	n->num_changes++;
+
+	/*
+	  work out how much room this will take in the buffer
+	*/
+	len = 12 + strlen_m(ev->path)*2;
+	if (len & 3) {
+		len += 4 - (len & 3);
+	}
+	n->current_buffer_size += len;
+
+	/* send what we have, unless its the first part of a rename */
+	if (ev->action != NOTIFY_ACTION_OLD_NAME) {
+		pvfs_notify_send(n, NT_STATUS_OK, true);
+	}
+}
+
+/*
+  setup a notify buffer on a directory handle
+*/
+static NTSTATUS pvfs_notify_setup(struct pvfs_state *pvfs, struct pvfs_file *f, 
+				  uint32_t buffer_size, uint32_t filter, bool recursive)
+{
+	NTSTATUS status;
+	struct notify_entry e;
+	
+	/* We may not fill in all the elements in this entry -
+	 * structure may in future be shared with Samba3 */
+	ZERO_STRUCT(e);
+
+	/* We may not fill in all the elements in this entry -
+	 * structure may in future be shared with Samba3 */
+	ZERO_STRUCT(e);
+
+	f->notify_buffer = talloc_zero(f, struct pvfs_notify_buffer);
+	NT_STATUS_HAVE_NO_MEMORY(f->notify_buffer);
+
+	f->notify_buffer->max_buffer_size = buffer_size;
+	f->notify_buffer->f = f;
+
+	e.filter    = filter;
+	e.path      = f->handle->name->full_name;
+	if (recursive) {
+		e.subdir_filter = filter;
+	} else {
+		e.subdir_filter = 0;
+	}
+
+	status = notify_add(pvfs->notify_context, &e, 
+			    pvfs_notify_callback, f->notify_buffer);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	talloc_set_destructor(f->notify_buffer, pvfs_notify_destructor);
+
+	return NT_STATUS_OK;
+}
+
+/*
+  called from the pvfs_wait code when either an event has come in, or
+  the notify request has been cancelled
+*/
+static void pvfs_notify_end(void *private_data, enum pvfs_wait_notice reason)
+{
+	struct pvfs_notify_buffer *notify_buffer = talloc_get_type(private_data,
+								   struct pvfs_notify_buffer);
+	if (reason == PVFS_WAIT_CANCEL) {
+		pvfs_notify_send(notify_buffer, NT_STATUS_CANCELLED, false);
+	} else {
+		pvfs_notify_send(notify_buffer, NT_STATUS_OK, true);
+	}
+}
+
+/* change notify request - always async. This request blocks until the
+   event buffer is non-empty */
+NTSTATUS pvfs_notify(struct ntvfs_module_context *ntvfs, 
+		     struct ntvfs_request *req,
+		     union smb_notify *info)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data, 
+						  struct pvfs_state);
+	struct pvfs_file *f;
+	NTSTATUS status;
+	struct notify_pending *pending;
+
+	if (info->nttrans.level != RAW_NOTIFY_NTTRANS) {
+		return ntvfs_map_notify(ntvfs, req, info);
+	}
+
+	f = pvfs_find_fd(pvfs, req, info->nttrans.in.file.ntvfs);
+	if (!f) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	/* this request doesn't make sense unless its async */
+	if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	/* its only valid for directories */
+	if (f->handle->fd != -1) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	/* if the handle doesn't currently have a notify buffer then
+	   create one */
+	if (f->notify_buffer == NULL) {
+		status = pvfs_notify_setup(pvfs, f, 
+					   info->nttrans.in.buffer_size, 
+					   info->nttrans.in.completion_filter,
+					   info->nttrans.in.recursive);
+		NT_STATUS_NOT_OK_RETURN(status);
+	}
+
+	/* we update the max_buffer_size on each call, but we do not
+	   update the recursive flag or filter */
+	f->notify_buffer->max_buffer_size = info->nttrans.in.buffer_size;
+
+	pending = talloc(f->notify_buffer, struct notify_pending);
+	NT_STATUS_HAVE_NO_MEMORY(pending);
+
+	pending->req = talloc_reference(pending, req);
+	NT_STATUS_HAVE_NO_MEMORY(pending->req);	
+	pending->info = info;
+
+	DLIST_ADD_END(f->notify_buffer->pending, pending);
+
+	/* if the buffer is empty then start waiting */
+	if (f->notify_buffer->num_changes == 0 && 
+	    !f->notify_buffer->overflowed) {
+		struct pvfs_wait *wait_handle;
+		wait_handle = pvfs_wait_message(pvfs, req, -1,
+						timeval_zero(),
+						pvfs_notify_end,
+						f->notify_buffer);
+		NT_STATUS_HAVE_NO_MEMORY(wait_handle);
+		talloc_steal(req, wait_handle);
+		return NT_STATUS_OK;
+	}
+
+	req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
+	pvfs_notify_send(f->notify_buffer, NT_STATUS_OK, false);
+
+	return NT_STATUS_OK;
+}
diff --git a/source4/ntvfs/posix/pvfs_open.c b/source4/ntvfs/posix/pvfs_open.c
new file mode 100644
index 0000000..860861d
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_open.c
@@ -0,0 +1,2094 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - open and close
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "system/dir.h"
+#include "system/time.h"
+#include "../lib/util/dlinklist.h"
+#include "messaging/messaging.h"
+#include "librpc/gen_ndr/xattr.h"
+
+/*
+  find open file handle given fnum
+*/
+struct pvfs_file *pvfs_find_fd(struct pvfs_state *pvfs,
+			       struct ntvfs_request *req, struct ntvfs_handle *h)
+{
+	void *p;
+	struct pvfs_file *f;
+
+	p = ntvfs_handle_get_backend_data(h, pvfs->ntvfs);
+	if (!p) return NULL;
+
+	f = talloc_get_type(p, struct pvfs_file);
+	if (!f) return NULL;
+
+	return f;
+}
+
+/*
+  cleanup a open directory handle
+*/
+static int pvfs_dir_handle_destructor(struct pvfs_file_handle *h)
+{
+	if (h->have_opendb_entry) {
+		struct odb_lock *lck;
+		NTSTATUS status;
+		const char *delete_path = NULL;
+
+		lck = odb_lock(h, h->pvfs->odb_context, &h->odb_locking_key);
+		if (lck == NULL) {
+			DEBUG(0,("Unable to lock opendb for close\n"));
+			return 0;
+		}
+
+		status = odb_close_file(lck, h, &delete_path);
+		if (!NT_STATUS_IS_OK(status)) {
+			DEBUG(0,("Unable to remove opendb entry for '%s' - %s\n",
+				 h->name->full_name, nt_errstr(status)));
+		}
+
+		if (h->name->stream_name == NULL && delete_path) {
+			status = pvfs_xattr_unlink_hook(h->pvfs, delete_path);
+			if (!NT_STATUS_IS_OK(status)) {
+				DEBUG(0,("Warning: xattr unlink hook failed for '%s' - %s\n",
+					 delete_path, nt_errstr(status)));
+			}
+			if (pvfs_sys_rmdir(h->pvfs, delete_path, h->name->allow_override) != 0) {
+				DEBUG(0,("pvfs_dir_handle_destructor: failed to rmdir '%s' - %s\n",
+					 delete_path, strerror(errno)));
+			}
+		}
+
+		talloc_free(lck);
+	}
+
+	return 0;
+}
+
+/*
+  cleanup a open directory fnum
+*/
+static int pvfs_dir_fnum_destructor(struct pvfs_file *f)
+{
+	DLIST_REMOVE(f->pvfs->files.list, f);
+	ntvfs_handle_remove_backend_data(f->ntvfs, f->pvfs->ntvfs);
+
+	return 0;
+}
+
+/*
+  setup any EAs and the ACL on newly created files/directories
+*/
+static NTSTATUS pvfs_open_setup_eas_acl(struct pvfs_state *pvfs,
+					struct ntvfs_request *req,
+					struct pvfs_filename *name,
+					int fd,	struct pvfs_file *f,
+					union smb_open *io,
+					struct security_descriptor *sd)
+{
+	NTSTATUS status = NT_STATUS_OK;
+
+	/* setup any EAs that were asked for */
+	if (io->ntcreatex.in.ea_list) {
+		status = pvfs_setfileinfo_ea_set(pvfs, name, fd, 
+						 io->ntcreatex.in.ea_list->num_eas,
+						 io->ntcreatex.in.ea_list->eas);
+		if (!NT_STATUS_IS_OK(status)) {
+			return status;
+		}
+	}
+
+	/* setup an initial sec_desc if requested */
+	if (sd && (sd->type & SEC_DESC_DACL_PRESENT)) {
+		union smb_setfileinfo set;
+/* 
+ * TODO: set the full ACL! 
+ *       - vista denies the creation of the file with NT_STATUS_PRIVILEGE_NOT_HELD,
+ *         when a SACL is present on the sd,
+ *         but the user doesn't have SeSecurityPrivilege
+ *       - w2k3 allows it
+ */
+		set.set_secdesc.in.file.ntvfs = f->ntvfs;
+		set.set_secdesc.in.secinfo_flags = SECINFO_DACL;
+		set.set_secdesc.in.sd = sd;
+
+		status = pvfs_acl_set(pvfs, req, name, fd, SEC_STD_WRITE_DAC, &set);
+	}
+
+	return status;
+}
+
+/*
+  form the lock context used for opendb locking. Note that we must
+  zero here to take account of possible padding on some architectures
+*/
+NTSTATUS pvfs_locking_key(struct pvfs_filename *name,
+			  TALLOC_CTX *mem_ctx, DATA_BLOB *key)
+{
+	struct {
+		dev_t device;
+		ino_t inode;
+	} lock_context;
+	ZERO_STRUCT(lock_context);
+
+	lock_context.device = name->st.st_dev;
+	lock_context.inode = name->st.st_ino;
+
+	*key = data_blob_talloc(mem_ctx, &lock_context, sizeof(lock_context));
+	if (key->data == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	
+	return NT_STATUS_OK;
+}
+
+
+/*
+  open a directory
+*/
+static NTSTATUS pvfs_open_directory(struct pvfs_state *pvfs, 
+				    struct ntvfs_request *req, 
+				    struct pvfs_filename *name, 
+				    union smb_open *io)
+{
+	struct pvfs_file *f;
+	struct ntvfs_handle *h;
+	NTSTATUS status;
+	uint32_t create_action;
+	uint32_t access_mask = io->generic.in.access_mask;
+	struct odb_lock *lck;
+	bool del_on_close;
+	uint32_t create_options;
+	uint32_t share_access;
+	bool forced;
+	struct security_descriptor *sd = NULL;
+
+	create_options = io->generic.in.create_options;
+	share_access   = io->generic.in.share_access;
+
+	forced = (io->generic.in.create_options & NTCREATEX_OPTIONS_DIRECTORY)?true:false;
+
+	if (name->stream_name) {
+		if (forced) {
+			return NT_STATUS_NOT_A_DIRECTORY;
+		} else {
+			return NT_STATUS_FILE_IS_A_DIRECTORY;
+		}
+	}
+
+	/* if the client says it must be a directory, and it isn't,
+	   then fail */
+	if (name->exists && !(name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY)) {
+		return NT_STATUS_NOT_A_DIRECTORY;
+	}
+
+	/* found with gentest */
+	if (io->ntcreatex.in.access_mask == SEC_FLAG_MAXIMUM_ALLOWED &&
+	    (io->ntcreatex.in.create_options & NTCREATEX_OPTIONS_DIRECTORY) &&
+	    (io->ntcreatex.in.create_options & NTCREATEX_OPTIONS_DELETE_ON_CLOSE)) {
+		DEBUG(3,(__location__ ": Invalid access_mask/create_options 0x%08x 0x%08x for %s\n",
+			 io->ntcreatex.in.access_mask, io->ntcreatex.in.create_options, name->original_name));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+	
+	switch (io->generic.in.open_disposition) {
+	case NTCREATEX_DISP_OPEN_IF:
+		break;
+
+	case NTCREATEX_DISP_OPEN:
+		if (!name->exists) {
+			return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+		}
+		break;
+
+	case NTCREATEX_DISP_CREATE:
+		if (name->exists) {
+			return NT_STATUS_OBJECT_NAME_COLLISION;
+		}
+		break;
+
+	case NTCREATEX_DISP_OVERWRITE_IF:
+	case NTCREATEX_DISP_OVERWRITE:
+	case NTCREATEX_DISP_SUPERSEDE:
+	default:
+		DEBUG(3,(__location__ ": Invalid open disposition 0x%08x for %s\n",
+			 io->generic.in.open_disposition, name->original_name));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	status = ntvfs_handle_new(pvfs->ntvfs, req, &h);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	f = talloc(h, struct pvfs_file);
+	if (f == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	f->handle = talloc(f, struct pvfs_file_handle);
+	if (f->handle == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	if (name->exists) {
+		/* check the security descriptor */
+		status = pvfs_access_check(pvfs, req, name, &access_mask);
+	} else {		
+		sd = io->ntcreatex.in.sec_desc;
+		status = pvfs_access_check_create(pvfs, req, name, &access_mask, true, &sd);
+	}
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	if (io->generic.in.query_maximal_access) {
+		status = pvfs_access_maximal_allowed(pvfs, req, name, 
+						     &io->generic.out.maximal_access);
+		NT_STATUS_NOT_OK_RETURN(status);
+	}
+
+	f->ntvfs         = h;
+	f->pvfs          = pvfs;
+	f->pending_list  = NULL;
+	f->lock_count    = 0;
+	f->share_access  = io->generic.in.share_access;
+	f->impersonation = io->generic.in.impersonation;
+	f->access_mask   = access_mask;
+	f->brl_handle	 = NULL;
+	f->notify_buffer = NULL;
+	f->search        = NULL;
+
+	f->handle->pvfs              = pvfs;
+	f->handle->name              = talloc_steal(f->handle, name);
+	f->handle->fd                = -1;
+	f->handle->odb_locking_key   = data_blob(NULL, 0);
+	f->handle->create_options    = io->generic.in.create_options;
+	f->handle->private_flags     = io->generic.in.private_flags;
+	f->handle->seek_offset       = 0;
+	f->handle->position          = 0;
+	f->handle->mode              = 0;
+	f->handle->oplock            = NULL;
+	ZERO_STRUCT(f->handle->write_time);
+	f->handle->open_completed    = false;
+
+	if ((create_options & NTCREATEX_OPTIONS_DELETE_ON_CLOSE) &&
+	    pvfs_directory_empty(pvfs, f->handle->name)) {
+		del_on_close = true;
+	} else {
+		del_on_close = false;
+	}
+
+	if (name->exists) {
+		/* form the lock context used for opendb locking */
+		status = pvfs_locking_key(name, f->handle, &f->handle->odb_locking_key);
+		if (!NT_STATUS_IS_OK(status)) {
+			return status;
+		}
+
+		/* get a lock on this file before the actual open */
+		lck = odb_lock(req, pvfs->odb_context, &f->handle->odb_locking_key);
+		if (lck == NULL) {
+			DEBUG(0,("pvfs_open: failed to lock file '%s' in opendb\n",
+				 name->full_name));
+			/* we were supposed to do a blocking lock, so something
+			   is badly wrong! */
+			return NT_STATUS_INTERNAL_DB_CORRUPTION;
+		}
+		
+		/* see if we are allowed to open at the same time as existing opens */
+		status = odb_can_open(lck, name->stream_id,
+				      share_access, access_mask, del_on_close,
+				      io->generic.in.open_disposition, false);
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(lck);
+			return status;
+		}
+
+		/* now really mark the file as open */
+		status = odb_open_file(lck, f->handle, name->full_name,
+				       NULL, name->dos.write_time,
+				       false, OPLOCK_NONE, NULL);
+
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(lck);
+			return status;
+		}
+
+		f->handle->have_opendb_entry = true;
+	}
+
+	DLIST_ADD(pvfs->files.list, f);
+
+	/* setup destructors to avoid leaks on abnormal termination */
+	talloc_set_destructor(f->handle, pvfs_dir_handle_destructor);
+	talloc_set_destructor(f, pvfs_dir_fnum_destructor);
+
+	if (!name->exists) {
+		uint32_t attrib = io->generic.in.file_attr | FILE_ATTRIBUTE_DIRECTORY;
+		mode_t mode = pvfs_fileperms(pvfs, attrib);
+
+		if (pvfs_sys_mkdir(pvfs, name->full_name, mode, name->allow_override) == -1) {
+			return pvfs_map_errno(pvfs,errno);
+		}
+
+		pvfs_xattr_unlink_hook(pvfs, name->full_name);
+
+		status = pvfs_resolve_name(pvfs, req, io->ntcreatex.in.fname, 0, &name);
+		if (!NT_STATUS_IS_OK(status)) {
+			goto cleanup_delete;
+		}
+
+		status = pvfs_open_setup_eas_acl(pvfs, req, name, -1, f, io, sd);
+		if (!NT_STATUS_IS_OK(status)) {
+			goto cleanup_delete;
+		}
+
+		/* form the lock context used for opendb locking */
+		status = pvfs_locking_key(name, f->handle, &f->handle->odb_locking_key);
+		if (!NT_STATUS_IS_OK(status)) {
+			return status;
+		}
+
+		lck = odb_lock(req, pvfs->odb_context, &f->handle->odb_locking_key);
+		if (lck == NULL) {
+			DEBUG(0,("pvfs_open: failed to lock file '%s' in opendb\n",
+				 name->full_name));
+			/* we were supposed to do a blocking lock, so something
+			   is badly wrong! */
+			return NT_STATUS_INTERNAL_DB_CORRUPTION;
+		}
+
+		status = odb_can_open(lck, name->stream_id,
+				      share_access, access_mask, del_on_close,
+				      io->generic.in.open_disposition, false);
+
+		if (!NT_STATUS_IS_OK(status)) {
+			goto cleanup_delete;
+		}
+
+		status = odb_open_file(lck, f->handle, name->full_name,
+				       NULL, name->dos.write_time,
+				       false, OPLOCK_NONE, NULL);
+
+		if (!NT_STATUS_IS_OK(status)) {
+			goto cleanup_delete;
+		}
+
+		f->handle->have_opendb_entry = true;
+
+		create_action = NTCREATEX_ACTION_CREATED;
+
+		notify_trigger(pvfs->notify_context, 
+			       NOTIFY_ACTION_ADDED, 
+			       FILE_NOTIFY_CHANGE_DIR_NAME,
+			       name->full_name);
+	} else {
+		create_action = NTCREATEX_ACTION_EXISTED;
+	}
+
+	if (!name->exists) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	if (io->generic.in.query_on_disk_id) {
+		ZERO_ARRAY(io->generic.out.on_disk_id);
+		SBVAL(io->generic.out.on_disk_id, 0, name->st.st_ino);
+		SBVAL(io->generic.out.on_disk_id, 8, name->st.st_dev);
+	}
+
+	/* the open succeeded, keep this handle permanently */
+	status = ntvfs_handle_set_backend_data(h, pvfs->ntvfs, f);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto cleanup_delete;
+	}
+
+	f->handle->open_completed = true;
+
+	io->generic.out.oplock_level  = OPLOCK_NONE;
+	io->generic.out.file.ntvfs    = h;
+	io->generic.out.create_action = create_action;
+	io->generic.out.create_time   = name->dos.create_time;
+	io->generic.out.access_time   = name->dos.access_time;
+	io->generic.out.write_time    = name->dos.write_time;
+	io->generic.out.change_time   = name->dos.change_time;
+	io->generic.out.attrib        = name->dos.attrib;
+	io->generic.out.alloc_size    = name->dos.alloc_size;
+	io->generic.out.size          = name->st.st_size;
+	io->generic.out.file_type     = FILE_TYPE_DISK;
+	io->generic.out.ipc_state     = 0;
+	io->generic.out.is_directory  = 1;
+
+	return NT_STATUS_OK;
+
+cleanup_delete:
+	pvfs_sys_rmdir(pvfs, name->full_name, name->allow_override);
+	return status;
+}
+
+/*
+  destroy a struct pvfs_file_handle
+*/
+static int pvfs_handle_destructor(struct pvfs_file_handle *h)
+{
+	talloc_free(h->write_time.update_event);
+	h->write_time.update_event = NULL;
+
+	if ((h->create_options & NTCREATEX_OPTIONS_DELETE_ON_CLOSE) &&
+	    h->name->stream_name) {
+		NTSTATUS status;
+		status = pvfs_stream_delete(h->pvfs, h->name, h->fd);
+		if (!NT_STATUS_IS_OK(status)) {
+			DEBUG(0,("Failed to delete stream '%s' on close of '%s'\n",
+				 h->name->stream_name, h->name->full_name));
+		}
+	}
+
+	if (h->fd != -1) {
+		if (close(h->fd) != 0) {
+			DEBUG(0,("pvfs_handle_destructor: close(%d) failed for %s - %s\n",
+				 h->fd, h->name->full_name, strerror(errno)));
+		}
+		h->fd = -1;
+	}
+
+	if (!h->write_time.update_forced &&
+	    h->write_time.update_on_close &&
+	    h->write_time.close_time == 0) {
+		struct timeval tv;
+		tv = timeval_current();
+		h->write_time.close_time = timeval_to_nttime(&tv);
+	}
+
+	if (h->have_opendb_entry) {
+		struct odb_lock *lck;
+		NTSTATUS status;
+		const char *delete_path = NULL;
+
+		lck = odb_lock(h, h->pvfs->odb_context, &h->odb_locking_key);
+		if (lck == NULL) {
+			DEBUG(0,("Unable to lock opendb for close\n"));
+			return 0;
+		}
+
+		if (h->write_time.update_forced) {
+			status = odb_get_file_infos(h->pvfs->odb_context,
+						    &h->odb_locking_key,
+						    NULL,
+						    &h->write_time.close_time);
+			if (!NT_STATUS_IS_OK(status)) {
+				DEBUG(0,("Unable get write time for '%s' - %s\n",
+					 h->name->full_name, nt_errstr(status)));
+			}
+
+			h->write_time.update_forced = false;
+			h->write_time.update_on_close = true;
+		} else if (h->write_time.update_on_close) {
+			status = odb_set_write_time(lck, h->write_time.close_time, true);
+			if (!NT_STATUS_IS_OK(status)) {
+				DEBUG(0,("Unable set write time for '%s' - %s\n",
+					 h->name->full_name, nt_errstr(status)));
+			}
+		}
+
+		status = odb_close_file(lck, h, &delete_path);
+		if (!NT_STATUS_IS_OK(status)) {
+			DEBUG(0,("Unable to remove opendb entry for '%s' - %s\n", 
+				 h->name->full_name, nt_errstr(status)));
+		}
+
+		if (h->name->stream_name == NULL &&
+		    h->open_completed && delete_path) {
+			status = pvfs_xattr_unlink_hook(h->pvfs, delete_path);
+			if (!NT_STATUS_IS_OK(status)) {
+				DEBUG(0,("Warning: xattr unlink hook failed for '%s' - %s\n",
+					 delete_path, nt_errstr(status)));
+			}
+			if (pvfs_sys_unlink(h->pvfs, delete_path, h->name->allow_override) != 0) {
+				DEBUG(0,("pvfs_close: failed to delete '%s' - %s\n",
+					 delete_path, strerror(errno)));
+			} else {
+				notify_trigger(h->pvfs->notify_context,
+					       NOTIFY_ACTION_REMOVED,
+					       FILE_NOTIFY_CHANGE_FILE_NAME,
+					       delete_path);
+			}
+			h->write_time.update_on_close = false;
+		}
+
+		talloc_free(lck);
+	}
+
+	if (h->write_time.update_on_close) {
+		struct timeval tv[2];
+
+		nttime_to_timeval(&tv[0], h->name->dos.access_time);
+		nttime_to_timeval(&tv[1], h->write_time.close_time);
+
+		if (!timeval_is_zero(&tv[0]) || !timeval_is_zero(&tv[1])) {
+			if (utimes(h->name->full_name, tv) == -1) {
+				DEBUG(3,("pvfs_handle_destructor: utimes() failed '%s' - %s\n",
+					 h->name->full_name, strerror(errno)));
+			}
+		}
+	}
+
+	return 0;
+}
+
+
+/*
+  destroy a struct pvfs_file
+*/
+static int pvfs_fnum_destructor(struct pvfs_file *f)
+{
+	DLIST_REMOVE(f->pvfs->files.list, f);
+	pvfs_lock_close(f->pvfs, f);
+	ntvfs_handle_remove_backend_data(f->ntvfs, f->pvfs->ntvfs);
+
+	return 0;
+}
+
+
+/*
+  form the lock context used for byte range locking. This is separate
+  from the locking key used for opendb locking as it needs to take
+  account of file streams (each stream is a separate byte range
+  locking space)
+*/
+static NTSTATUS pvfs_brl_locking_handle(TALLOC_CTX *mem_ctx,
+					struct pvfs_filename *name,
+					struct ntvfs_handle *ntvfs,
+					struct brl_handle **_h)
+{
+	DATA_BLOB odb_key, key;
+	NTSTATUS status;
+	struct brl_handle *h;
+
+	status = pvfs_locking_key(name, mem_ctx, &odb_key);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	if (name->stream_name == NULL) {
+		key = odb_key;
+	} else {
+		key = data_blob_talloc(mem_ctx, NULL, 
+				       odb_key.length + strlen(name->stream_name) + 1);
+		NT_STATUS_HAVE_NO_MEMORY(key.data);
+		memcpy(key.data, odb_key.data, odb_key.length);
+		memcpy(key.data + odb_key.length, 
+		       name->stream_name, strlen(name->stream_name) + 1);
+		data_blob_free(&odb_key);
+	}
+
+	h = brlock_create_handle(mem_ctx, ntvfs, &key);
+	NT_STATUS_HAVE_NO_MEMORY(h);
+
+	*_h = h;
+	return NT_STATUS_OK;
+}
+
+/*
+  create a new file
+*/
+static NTSTATUS pvfs_create_file(struct pvfs_state *pvfs, 
+				 struct ntvfs_request *req, 
+				 struct pvfs_filename *name, 
+				 union smb_open *io)
+{
+	struct pvfs_file *f;
+	NTSTATUS status;
+	struct ntvfs_handle *h;
+	int flags, fd;
+	struct odb_lock *lck;
+	uint32_t create_options = io->generic.in.create_options;
+	uint32_t share_access = io->generic.in.share_access;
+	uint32_t access_mask = io->generic.in.access_mask;
+	mode_t mode;
+	uint32_t attrib;
+	bool del_on_close;
+	struct pvfs_filename *parent;
+	uint32_t oplock_level = OPLOCK_NONE, oplock_granted;
+	bool allow_level_II_oplock = false;
+	struct security_descriptor *sd = NULL;
+
+	if (io->ntcreatex.in.file_attr & ~FILE_ATTRIBUTE_ALL_MASK) {
+		DEBUG(3,(__location__ ": Invalid file_attr 0x%08x for %s\n",
+			 io->ntcreatex.in.file_attr, name->original_name));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	if (io->ntcreatex.in.file_attr & FILE_ATTRIBUTE_ENCRYPTED) {
+		DEBUG(3,(__location__ ": Invalid encryption request for %s\n",
+			 name->original_name));
+		return NT_STATUS_ACCESS_DENIED;
+	}
+	    
+	if ((io->ntcreatex.in.file_attr & FILE_ATTRIBUTE_READONLY) &&
+	    (create_options & NTCREATEX_OPTIONS_DELETE_ON_CLOSE)) {
+		DEBUG(4,(__location__ ": Invalid delete on close for readonly file %s\n",
+			 name->original_name));
+		return NT_STATUS_CANNOT_DELETE;
+	}
+
+	sd = io->ntcreatex.in.sec_desc;
+	status = pvfs_access_check_create(pvfs, req, name, &access_mask, false, &sd);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	/* check that the parent isn't opened with delete on close set */
+	status = pvfs_resolve_parent(pvfs, req, name, &parent);
+	if (NT_STATUS_IS_OK(status)) {
+		DATA_BLOB locking_key;
+		status = pvfs_locking_key(parent, req, &locking_key);
+		NT_STATUS_NOT_OK_RETURN(status);
+		status = odb_get_file_infos(pvfs->odb_context, &locking_key,
+					    &del_on_close, NULL);
+		NT_STATUS_NOT_OK_RETURN(status);
+		if (del_on_close) {
+			return NT_STATUS_DELETE_PENDING;
+		}
+	}
+
+	if (access_mask & (SEC_FILE_WRITE_DATA | SEC_FILE_APPEND_DATA)) {
+		flags = O_RDWR;
+	} else {
+		flags = O_RDONLY;
+	}
+
+	status = ntvfs_handle_new(pvfs->ntvfs, req, &h);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	f = talloc(h, struct pvfs_file);
+	NT_STATUS_HAVE_NO_MEMORY(f);
+
+	f->handle = talloc(f, struct pvfs_file_handle);
+	NT_STATUS_HAVE_NO_MEMORY(f->handle);
+
+	attrib = io->ntcreatex.in.file_attr | FILE_ATTRIBUTE_ARCHIVE;
+	mode = pvfs_fileperms(pvfs, attrib);
+
+	/* create the file */
+	fd = pvfs_sys_open(pvfs, name->full_name, flags | O_CREAT | O_EXCL| O_NONBLOCK, mode, name->allow_override);
+	if (fd == -1) {
+		return pvfs_map_errno(pvfs, errno);
+	}
+
+	pvfs_xattr_unlink_hook(pvfs, name->full_name);
+
+	/* if this was a stream create then create the stream as well */
+	if (name->stream_name) {
+		status = pvfs_stream_create(pvfs, name, fd);
+		if (!NT_STATUS_IS_OK(status)) {
+			close(fd);
+			return status;
+		}
+	}
+
+	/* re-resolve the open fd */
+	status = pvfs_resolve_name_fd(pvfs, fd, name, 0);
+	if (!NT_STATUS_IS_OK(status)) {
+		close(fd);
+		return status;
+	}
+
+	/* support initial alloc sizes */
+	name->dos.alloc_size = io->ntcreatex.in.alloc_size;
+	name->dos.attrib = attrib;
+	status = pvfs_dosattrib_save(pvfs, name, fd);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto cleanup_delete;
+	}
+
+
+	status = pvfs_open_setup_eas_acl(pvfs, req, name, fd, f, io, sd);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto cleanup_delete;
+	}
+
+	if (io->generic.in.query_maximal_access) {
+		status = pvfs_access_maximal_allowed(pvfs, req, name, 
+						     &io->generic.out.maximal_access);
+		if (!NT_STATUS_IS_OK(status)) {
+			goto cleanup_delete;
+		}
+	}
+
+	if (io->generic.in.query_on_disk_id) {
+		ZERO_ARRAY(io->generic.out.on_disk_id);
+		SBVAL(io->generic.out.on_disk_id, 0, name->st.st_ino);
+		SBVAL(io->generic.out.on_disk_id, 8, name->st.st_dev);
+	}
+
+	/* form the lock context used for byte range locking and
+	   opendb locking */
+	status = pvfs_locking_key(name, f->handle, &f->handle->odb_locking_key);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto cleanup_delete;
+	}
+
+	status = pvfs_brl_locking_handle(f, name, h, &f->brl_handle);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto cleanup_delete;
+	}
+
+	/* grab a lock on the open file record */
+	lck = odb_lock(req, pvfs->odb_context, &f->handle->odb_locking_key);
+	if (lck == NULL) {
+		DEBUG(0,("pvfs_open: failed to lock file '%s' in opendb\n",
+			 name->full_name));
+		/* we were supposed to do a blocking lock, so something
+		   is badly wrong! */
+		status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+		goto cleanup_delete;
+	}
+
+	if (create_options & NTCREATEX_OPTIONS_DELETE_ON_CLOSE) {
+		del_on_close = true;
+	} else {
+		del_on_close = false;
+	}
+
+	if (pvfs->flags & PVFS_FLAG_FAKE_OPLOCKS) {
+		oplock_level = OPLOCK_NONE;
+	} else if (io->ntcreatex.in.flags & NTCREATEX_FLAGS_REQUEST_BATCH_OPLOCK) {
+		oplock_level = OPLOCK_BATCH;
+	} else if (io->ntcreatex.in.flags & NTCREATEX_FLAGS_REQUEST_OPLOCK) {
+		oplock_level = OPLOCK_EXCLUSIVE;
+	}
+
+	if (req->client_caps & NTVFS_CLIENT_CAP_LEVEL_II_OPLOCKS) {
+		allow_level_II_oplock = true;
+	}
+
+	status = odb_can_open(lck, name->stream_id,
+			      share_access, access_mask, del_on_close,
+			      io->generic.in.open_disposition, false);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(lck);
+		/* bad news, we must have hit a race - we don't delete the file
+		   here as the most likely scenario is that someone else created
+		   the file at the same time */
+		close(fd);
+		return status;
+	}
+
+	f->ntvfs             = h;
+	f->pvfs              = pvfs;
+	f->pending_list      = NULL;
+	f->lock_count        = 0;
+	f->share_access      = io->generic.in.share_access;
+	f->access_mask       = access_mask;
+	f->impersonation     = io->generic.in.impersonation;
+	f->notify_buffer     = NULL;
+	f->search            = NULL;
+
+	f->handle->pvfs              = pvfs;
+	f->handle->name              = talloc_steal(f->handle, name);
+	f->handle->fd                = fd;
+	f->handle->create_options    = io->generic.in.create_options;
+	f->handle->private_flags     = io->generic.in.private_flags;
+	f->handle->seek_offset       = 0;
+	f->handle->position          = 0;
+	f->handle->mode              = 0;
+	f->handle->oplock            = NULL;
+	f->handle->have_opendb_entry = true;
+	ZERO_STRUCT(f->handle->write_time);
+	f->handle->open_completed    = false;
+
+	status = odb_open_file(lck, f->handle, name->full_name,
+			       &f->handle->fd, name->dos.write_time,
+			       allow_level_II_oplock,
+			       oplock_level, &oplock_granted);
+	talloc_free(lck);
+	if (!NT_STATUS_IS_OK(status)) {
+		/* bad news, we must have hit a race - we don't delete the file
+		   here as the most likely scenario is that someone else created
+		   the file at the same time */
+		close(fd);
+		return status;
+	}
+
+	DLIST_ADD(pvfs->files.list, f);
+
+	/* setup a destructor to avoid file descriptor leaks on
+	   abnormal termination */
+	talloc_set_destructor(f, pvfs_fnum_destructor);
+	talloc_set_destructor(f->handle, pvfs_handle_destructor);
+
+	if (pvfs->flags & PVFS_FLAG_FAKE_OPLOCKS) {
+		oplock_granted = OPLOCK_BATCH;
+	} else if (oplock_granted != OPLOCK_NONE) {
+		status = pvfs_setup_oplock(f, oplock_granted);
+		if (!NT_STATUS_IS_OK(status)) {
+			return status;
+		}
+	}
+
+	io->generic.out.oplock_level  = oplock_granted;
+	io->generic.out.file.ntvfs    = f->ntvfs;
+	io->generic.out.create_action = NTCREATEX_ACTION_CREATED;
+	io->generic.out.create_time   = name->dos.create_time;
+	io->generic.out.access_time   = name->dos.access_time;
+	io->generic.out.write_time    = name->dos.write_time;
+	io->generic.out.change_time   = name->dos.change_time;
+	io->generic.out.attrib        = name->dos.attrib;
+	io->generic.out.alloc_size    = name->dos.alloc_size;
+	io->generic.out.size          = name->st.st_size;
+	io->generic.out.file_type     = FILE_TYPE_DISK;
+	io->generic.out.ipc_state     = 0;
+	io->generic.out.is_directory  = 0;
+
+	/* success - keep the file handle */
+	status = ntvfs_handle_set_backend_data(h, pvfs->ntvfs, f);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto cleanup_delete;
+	}
+
+	f->handle->open_completed = true;
+
+	notify_trigger(pvfs->notify_context, 
+		       NOTIFY_ACTION_ADDED, 
+		       FILE_NOTIFY_CHANGE_FILE_NAME,
+		       name->full_name);
+
+	return NT_STATUS_OK;
+
+cleanup_delete:
+	close(fd);
+	pvfs_sys_unlink(pvfs, name->full_name, name->allow_override);
+	return status;
+}
+
+/*
+  state of a pending retry
+*/
+struct pvfs_odb_retry {
+	struct ntvfs_module_context *ntvfs;
+	struct ntvfs_request *req;
+	DATA_BLOB odb_locking_key;
+	void *io;
+	void *private_data;
+	void (*callback)(struct pvfs_odb_retry *r,
+			 struct ntvfs_module_context *ntvfs,
+			 struct ntvfs_request *req,
+			 void *io,
+			 void *private_data,
+			 enum pvfs_wait_notice reason);
+};
+
+/* destroy a pending request */
+static int pvfs_odb_retry_destructor(struct pvfs_odb_retry *r)
+{
+	struct pvfs_state *pvfs = talloc_get_type(r->ntvfs->private_data,
+				  struct pvfs_state);
+	if (r->odb_locking_key.data) {
+		struct odb_lock *lck;
+		lck = odb_lock(r->req, pvfs->odb_context, &r->odb_locking_key);
+		if (lck != NULL) {
+			odb_remove_pending(lck, r);
+		}
+		talloc_free(lck);
+	}
+	return 0;
+}
+
+static void pvfs_odb_retry_callback(void *_r, enum pvfs_wait_notice reason)
+{
+	struct pvfs_odb_retry *r = talloc_get_type(_r, struct pvfs_odb_retry);
+
+	if (reason == PVFS_WAIT_EVENT) {
+		/*
+		 * The pending odb entry is already removed.
+		 * We use a null locking key to indicate this
+		 * to the destructor.
+		 */
+		data_blob_free(&r->odb_locking_key);
+	}
+
+	r->callback(r, r->ntvfs, r->req, r->io, r->private_data, reason);
+}
+
+/*
+  setup for a retry of a request that was rejected
+  by odb_can_open()
+*/
+NTSTATUS pvfs_odb_retry_setup(struct ntvfs_module_context *ntvfs,
+			      struct ntvfs_request *req,
+			      struct odb_lock *lck,
+			      struct timeval end_time,
+			      void *io,
+			      void *private_data,
+			      void (*callback)(struct pvfs_odb_retry *r,
+					       struct ntvfs_module_context *ntvfs,
+					       struct ntvfs_request *req,
+					       void *io,
+					       void *private_data,
+					       enum pvfs_wait_notice reason))
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct pvfs_odb_retry *r;
+	struct pvfs_wait *wait_handle;
+	NTSTATUS status;
+
+	r = talloc(req, struct pvfs_odb_retry);
+	NT_STATUS_HAVE_NO_MEMORY(r);
+
+	r->ntvfs = ntvfs;
+	r->req = req;
+	r->io = io;
+	r->private_data = private_data;
+	r->callback = callback;
+	r->odb_locking_key = odb_get_key(r, lck);
+	if (r->odb_locking_key.data == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	/* setup a pending lock */
+	status = odb_open_file_pending(lck, r);
+	if (NT_STATUS_EQUAL(NT_STATUS_OBJECT_NAME_NOT_FOUND,status)) {
+		/*
+		 * maybe only a unix application
+		 * has the file open
+		 */
+		data_blob_free(&r->odb_locking_key);
+	} else if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	talloc_free(lck);
+
+	talloc_set_destructor(r, pvfs_odb_retry_destructor);
+
+	wait_handle = pvfs_wait_message(pvfs, req,
+					MSG_PVFS_RETRY_OPEN, end_time,
+					pvfs_odb_retry_callback, r);
+	if (wait_handle == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	talloc_steal(r, wait_handle);
+
+	return NT_STATUS_OK;
+}
+
+/*
+  retry an open after a sharing violation
+*/
+static void pvfs_retry_open_sharing(struct pvfs_odb_retry *r,
+				    struct ntvfs_module_context *ntvfs,
+				    struct ntvfs_request *req,
+				    void *_io,
+				    void *private_data,
+				    enum pvfs_wait_notice reason)
+{
+	union smb_open *io = talloc_get_type(_io, union smb_open);
+	struct timeval *final_timeout = NULL;
+	NTSTATUS status;
+
+	if (private_data) {
+		final_timeout = talloc_get_type(private_data,
+						struct timeval);
+	}
+
+	/* w2k3 ignores SMBntcancel for outstanding open requests. It's probably
+	   just a bug in their server, but we better do the same */
+	if (reason == PVFS_WAIT_CANCEL) {
+		return;
+	}
+
+	if (reason == PVFS_WAIT_TIMEOUT) {
+		if (final_timeout &&
+		    !timeval_expired(final_timeout)) {
+			/*
+			 * we need to retry periodictly
+			 * after an EAGAIN as there's
+			 * no way the kernel tell us
+			 * an oplock is released.
+			 */
+			goto retry;
+		}
+		/* if it timed out, then give the failure
+		   immediately */
+		talloc_free(r);
+		req->async_states->status = NT_STATUS_SHARING_VIOLATION;
+		req->async_states->send_fn(req);
+		return;
+	}
+
+retry:
+	talloc_free(r);
+
+	/* try the open again, which could trigger another retry setup
+	   if it wants to, so we have to unmark the async flag so we
+	   will know if it does a second async reply */
+	req->async_states->state &= ~NTVFS_ASYNC_STATE_ASYNC;
+
+	status = pvfs_open(ntvfs, req, io);
+	if (req->async_states->state & NTVFS_ASYNC_STATE_ASYNC) {
+		/* the 2nd try also replied async, so we don't send
+		   the reply yet */
+		return;
+	}
+
+	/* re-mark it async, just in case someone up the chain does
+	   paranoid checking */
+	req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
+
+	/* send the reply up the chain */
+	req->async_states->status = status;
+	req->async_states->send_fn(req);
+}
+
+
+/*
+  special handling for openx DENY_DOS semantics
+
+  This function attempts a reference open using an existing handle. If its allowed,
+  then it returns NT_STATUS_OK, otherwise it returns any other code and normal
+  open processing continues.
+*/
+static NTSTATUS pvfs_open_deny_dos(struct ntvfs_module_context *ntvfs,
+				   struct ntvfs_request *req, union smb_open *io,
+				   struct pvfs_file *f, struct odb_lock *lck)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct pvfs_file *f2;
+	struct pvfs_filename *name;
+	NTSTATUS status;
+
+	/* search for an existing open with the right parameters. Note
+	   the magic ntcreatex options flag, which is set in the
+	   generic mapping code. This might look ugly, but its
+	   actually pretty much now w2k does it internally as well. 
+	   
+	   If you look at the BASE-DENYDOS test you will see that a
+	   DENY_DOS is a very special case, and in the right
+	   circumstances you actually get the _same_ handle back
+	   twice, rather than a new handle.
+	*/
+	for (f2=pvfs->files.list;f2;f2=f2->next) {
+		if (f2 != f &&
+		    f2->ntvfs->session_info == req->session_info &&
+		    f2->ntvfs->smbpid == req->smbpid &&
+		    (f2->handle->private_flags &
+		     (NTCREATEX_FLAG_DENY_DOS |
+		      NTCREATEX_FLAG_DENY_FCB)) &&
+		    (f2->access_mask & SEC_FILE_WRITE_DATA) &&
+		    strcasecmp_m(f2->handle->name->original_name, 
+			       io->generic.in.fname)==0) {
+			break;
+		}
+	}
+
+	if (!f2) {
+		return NT_STATUS_SHARING_VIOLATION;
+	}
+
+	/* quite an insane set of semantics ... */
+	if (is_exe_filename(io->generic.in.fname) &&
+	    (f2->handle->private_flags & NTCREATEX_FLAG_DENY_DOS)) {
+		return NT_STATUS_SHARING_VIOLATION;
+	}
+
+	/*
+	  setup a reference to the existing handle
+	 */
+	talloc_free(f->handle);
+	f->handle = talloc_reference(f, f2->handle);
+
+	talloc_free(lck);
+
+	name = f->handle->name;
+
+	io->generic.out.oplock_level  = OPLOCK_NONE;
+	io->generic.out.file.ntvfs    = f->ntvfs;
+	io->generic.out.create_action = NTCREATEX_ACTION_EXISTED;
+	io->generic.out.create_time   = name->dos.create_time;
+	io->generic.out.access_time   = name->dos.access_time;
+	io->generic.out.write_time    = name->dos.write_time;
+	io->generic.out.change_time   = name->dos.change_time;
+	io->generic.out.attrib        = name->dos.attrib;
+	io->generic.out.alloc_size    = name->dos.alloc_size;
+	io->generic.out.size          = name->st.st_size;
+	io->generic.out.file_type     = FILE_TYPE_DISK;
+	io->generic.out.ipc_state     = 0;
+	io->generic.out.is_directory  = 0;
+ 
+	status = ntvfs_handle_set_backend_data(f->ntvfs, ntvfs, f);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	return NT_STATUS_OK;
+}
+
+
+
+/*
+  setup for a open retry after a sharing violation
+*/
+static NTSTATUS pvfs_open_setup_retry(struct ntvfs_module_context *ntvfs,
+				      struct ntvfs_request *req, 
+				      union smb_open *io,
+				      struct pvfs_file *f,
+				      struct odb_lock *lck,
+				      NTSTATUS parent_status)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	NTSTATUS status;
+	struct timeval end_time;
+	struct timeval *final_timeout = NULL;
+
+	if (io->generic.in.private_flags &
+	    (NTCREATEX_FLAG_DENY_DOS | NTCREATEX_FLAG_DENY_FCB)) {
+		/* see if we can satisfy the request using the special DENY_DOS
+		   code */
+		status = pvfs_open_deny_dos(ntvfs, req, io, f, lck);
+		if (NT_STATUS_IS_OK(status)) {
+			return status;
+		}
+	}
+
+	/* the retry should allocate a new file handle */
+	talloc_free(f);
+
+	if (NT_STATUS_EQUAL(parent_status, NT_STATUS_SHARING_VIOLATION)) {
+		end_time = timeval_add(&req->statistics.request_time,
+				       0, pvfs->sharing_violation_delay);
+	} else if (NT_STATUS_EQUAL(parent_status, NT_STATUS_OPLOCK_NOT_GRANTED)) {
+		end_time = timeval_add(&req->statistics.request_time,
+				       pvfs->oplock_break_timeout, 0);
+	} else if (NT_STATUS_EQUAL(parent_status, STATUS_MORE_ENTRIES)) {
+		/*
+		 * we got EAGAIN which means a unix application
+		 * has an oplock or share mode
+		 *
+		 * we retry every 4/5 of the sharing violation delay
+		 * to see if the unix application
+		 * has released the oplock or share mode.
+		 */
+		final_timeout = talloc(req, struct timeval);
+		NT_STATUS_HAVE_NO_MEMORY(final_timeout);
+		*final_timeout = timeval_add(&req->statistics.request_time,
+					     pvfs->oplock_break_timeout,
+					     0);
+		end_time = timeval_current_ofs_usec((pvfs->sharing_violation_delay*4)/5);
+		end_time = timeval_min(final_timeout, &end_time);
+	} else {
+		return NT_STATUS_INTERNAL_ERROR;
+	}
+
+	return pvfs_odb_retry_setup(ntvfs, req, lck, end_time, io,
+				    final_timeout, pvfs_retry_open_sharing);
+}
+
+/*
+  open a file
+*/
+NTSTATUS pvfs_open(struct ntvfs_module_context *ntvfs,
+		   struct ntvfs_request *req, union smb_open *io)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	int flags = 0;
+	struct pvfs_filename *name;
+	struct pvfs_file *f;
+	struct ntvfs_handle *h;
+	NTSTATUS status;
+	int fd, count;
+	struct odb_lock *lck;
+	uint32_t create_options;
+	uint32_t create_options_must_ignore_mask;
+	uint32_t share_access;
+	uint32_t access_mask;
+	uint32_t create_action = NTCREATEX_ACTION_EXISTED;
+	bool del_on_close;
+	bool stream_existed, stream_truncate=false;
+	uint32_t oplock_level = OPLOCK_NONE, oplock_granted;
+	bool allow_level_II_oplock = false;
+
+	/* use the generic mapping code to avoid implementing all the
+	   different open calls. */
+	if (io->generic.level != RAW_OPEN_GENERIC &&
+	    io->generic.level != RAW_OPEN_NTTRANS_CREATE) {
+		return ntvfs_map_open(ntvfs, req, io);
+	}
+
+	ZERO_STRUCT(io->generic.out);
+
+	create_options = io->generic.in.create_options;
+	share_access   = io->generic.in.share_access;
+	access_mask    = io->generic.in.access_mask;
+
+	if (share_access & ~NTCREATEX_SHARE_ACCESS_MASK) {
+		DEBUG(3,(__location__ ": Invalid share_access 0x%08x for %s\n",
+			 share_access, io->ntcreatex.in.fname));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	/*
+	 * These options are ignored,
+	 * but we reuse some of them as private values for the generic mapping
+	 */
+	create_options_must_ignore_mask = NTCREATEX_OPTIONS_MUST_IGNORE_MASK;
+	create_options &= ~create_options_must_ignore_mask;
+
+	if (create_options & NTCREATEX_OPTIONS_NOT_SUPPORTED_MASK) {
+		DEBUG(2,(__location__ " create_options 0x%x not supported\n", 
+			 create_options));
+		return NT_STATUS_NOT_SUPPORTED;
+	}
+
+	if (create_options & NTCREATEX_OPTIONS_INVALID_PARAM_MASK) {
+		DEBUG(3,(__location__ ": Invalid create_options 0x%08x for %s\n",
+			 create_options, io->ntcreatex.in.fname));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	/* TODO: When we implement HSM, add a hook here not to pull
+	 * the actual file off tape, when this option is passed from
+	 * the client */
+	if (create_options & NTCREATEX_OPTIONS_NO_RECALL) {
+		/* no-op */
+	}
+
+	/* TODO: If (unlikely) Linux does a good compressed
+	 * filesystem, we might need an ioctl call for this */
+	if (create_options & NTCREATEX_OPTIONS_NO_COMPRESSION) {
+		/* no-op */
+	}
+
+	if (create_options & NTCREATEX_OPTIONS_NO_INTERMEDIATE_BUFFERING) {
+		create_options |= NTCREATEX_OPTIONS_WRITE_THROUGH;
+	}
+
+	/* Open the file with sync, if they asked for it, but
+	   'strict sync = no' turns this client request into a no-op */
+	if (create_options & (NTCREATEX_OPTIONS_WRITE_THROUGH) && pvfs->flags & PVFS_FLAG_STRICT_SYNC) {
+		flags |= O_SYNC;
+	}
+
+
+	/* other create options are not allowed */
+	if ((create_options & NTCREATEX_OPTIONS_DELETE_ON_CLOSE) &&
+	    !(access_mask & SEC_STD_DELETE)) {
+		DEBUG(3,(__location__ ": Invalid delete_on_close option 0x%08x with access_mask 0x%08x for %s\n",
+			 create_options, access_mask, io->ntcreatex.in.fname));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	if (access_mask & SEC_MASK_INVALID) {
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
+	/* what does this bit really mean?? */
+	if (req->ctx->protocol >= PROTOCOL_SMB2_02 &&
+	    access_mask == SEC_STD_SYNCHRONIZE) {
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
+	/* cope with non-zero root_fid */
+	if (io->ntcreatex.in.root_fid.ntvfs != NULL) {
+		f = pvfs_find_fd(pvfs, req, io->ntcreatex.in.root_fid.ntvfs);
+		if (f == NULL) {
+			return NT_STATUS_INVALID_HANDLE;
+		}
+		if (f->handle->fd != -1) {
+			return NT_STATUS_INVALID_DEVICE_REQUEST;
+		}
+		io->ntcreatex.in.fname = talloc_asprintf(req, "%s\\%s", 
+							 f->handle->name->original_name,
+							 io->ntcreatex.in.fname);
+		NT_STATUS_HAVE_NO_MEMORY(io->ntcreatex.in.fname);			
+	}
+
+	if (io->ntcreatex.in.file_attr & (FILE_ATTRIBUTE_DEVICE|
+					  FILE_ATTRIBUTE_VOLUME| 
+					  (~FILE_ATTRIBUTE_ALL_MASK))) {
+		DEBUG(3,(__location__ ": Invalid file_attr 0x%08x for %s\n",
+			 io->ntcreatex.in.file_attr, io->ntcreatex.in.fname));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	/* we ignore some file_attr bits */
+	io->ntcreatex.in.file_attr &= ~(FILE_ATTRIBUTE_NONINDEXED | 
+					FILE_ATTRIBUTE_COMPRESSED |
+					FILE_ATTRIBUTE_REPARSE_POINT |
+					FILE_ATTRIBUTE_SPARSE |
+					FILE_ATTRIBUTE_NORMAL);
+
+	/* resolve the cifs name to a posix name */
+	status = pvfs_resolve_name(pvfs, req, io->ntcreatex.in.fname, 
+				   PVFS_RESOLVE_STREAMS, &name);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	/* if the client specified that it must not be a directory then
+	   check that it isn't */
+	if (name->exists && (name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY) &&
+	    (io->generic.in.create_options & NTCREATEX_OPTIONS_NON_DIRECTORY_FILE)) {
+		return NT_STATUS_FILE_IS_A_DIRECTORY;
+	}
+
+	/* if the client specified that it must be a directory then
+	   check that it is */
+	if (name->exists && !(name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY) &&
+	    (io->generic.in.create_options & NTCREATEX_OPTIONS_DIRECTORY)) {
+		return NT_STATUS_NOT_A_DIRECTORY;
+	}
+
+	/* directory opens are handled separately */
+	if ((name->exists && (name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY)) ||
+	    (io->generic.in.create_options & NTCREATEX_OPTIONS_DIRECTORY)) {
+		return pvfs_open_directory(pvfs, req, name, io);
+	}
+
+	/* FILE_ATTRIBUTE_DIRECTORY is ignored if the above test for directory
+	   open doesn't match */
+	io->generic.in.file_attr &= ~FILE_ATTRIBUTE_DIRECTORY;
+
+	switch (io->generic.in.open_disposition) {
+	case NTCREATEX_DISP_SUPERSEDE:
+	case NTCREATEX_DISP_OVERWRITE_IF:
+		if (name->stream_name == NULL) {
+			flags |= O_TRUNC;
+		} else {
+			stream_truncate = true;
+		}
+		create_action = NTCREATEX_ACTION_TRUNCATED;
+		break;
+
+	case NTCREATEX_DISP_OPEN:
+		if (!name->stream_exists) {
+			return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+		}
+		break;
+
+	case NTCREATEX_DISP_OVERWRITE:
+		if (!name->stream_exists) {
+			return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+		}
+		if (name->stream_name == NULL) {
+			flags |= O_TRUNC;
+		} else {
+			stream_truncate = true;
+		}
+		create_action = NTCREATEX_ACTION_TRUNCATED;
+		break;
+
+	case NTCREATEX_DISP_CREATE:
+		if (name->stream_exists) {
+			return NT_STATUS_OBJECT_NAME_COLLISION;
+		}
+		break;
+
+	case NTCREATEX_DISP_OPEN_IF:
+		break;
+
+	default:
+		DEBUG(3,(__location__ ": Invalid open disposition 0x%08x for %s\n",
+			 io->generic.in.open_disposition, name->original_name));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	/* handle creating a new file separately */
+	if (!name->exists) {
+		status = pvfs_create_file(pvfs, req, name, io);
+		if (!NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_COLLISION)) {
+			return status;
+		}
+
+		/* we've hit a race - the file was created during this call */
+		if (io->generic.in.open_disposition == NTCREATEX_DISP_CREATE) {
+			return status;
+		}
+
+		/* try re-resolving the name */
+		status = pvfs_resolve_name(pvfs, req, io->ntcreatex.in.fname, 0, &name);
+		if (!NT_STATUS_IS_OK(status)) {
+			return status;
+		}
+		/* fall through to a normal open */
+	}
+
+	if ((name->dos.attrib & FILE_ATTRIBUTE_READONLY) &&
+	    (create_options & NTCREATEX_OPTIONS_DELETE_ON_CLOSE)) {
+		return NT_STATUS_CANNOT_DELETE;
+	}
+
+	/* check the security descriptor */
+	status = pvfs_access_check(pvfs, req, name, &access_mask);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	if (io->generic.in.query_maximal_access) {
+		status = pvfs_access_maximal_allowed(pvfs, req, name, 
+						     &io->generic.out.maximal_access);
+		NT_STATUS_NOT_OK_RETURN(status);
+	}
+
+	if (io->generic.in.query_on_disk_id) {
+		ZERO_ARRAY(io->generic.out.on_disk_id);
+		SBVAL(io->generic.out.on_disk_id, 0, name->st.st_ino);
+		SBVAL(io->generic.out.on_disk_id, 8, name->st.st_dev);
+	}
+
+	status = ntvfs_handle_new(pvfs->ntvfs, req, &h);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	f = talloc(h, struct pvfs_file);
+	if (f == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	f->handle = talloc(f, struct pvfs_file_handle);
+	if (f->handle == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	f->ntvfs         = h;
+	f->pvfs          = pvfs;
+	f->pending_list  = NULL;
+	f->lock_count    = 0;
+	f->share_access  = io->generic.in.share_access;
+	f->access_mask   = access_mask;
+	f->impersonation = io->generic.in.impersonation;
+	f->notify_buffer = NULL;
+	f->search        = NULL;
+
+	f->handle->pvfs              = pvfs;
+	f->handle->fd                = -1;
+	f->handle->name              = talloc_steal(f->handle, name);
+	f->handle->create_options    = io->generic.in.create_options;
+	f->handle->private_flags     = io->generic.in.private_flags;
+	f->handle->seek_offset       = 0;
+	f->handle->position          = 0;
+	f->handle->mode              = 0;
+	f->handle->oplock            = NULL;
+	f->handle->have_opendb_entry = false;
+	ZERO_STRUCT(f->handle->write_time);
+	f->handle->open_completed    = false;
+
+	/* form the lock context used for byte range locking and
+	   opendb locking */
+	status = pvfs_locking_key(name, f->handle, &f->handle->odb_locking_key);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	status = pvfs_brl_locking_handle(f, name, h, &f->brl_handle);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	/* get a lock on this file before the actual open */
+	lck = odb_lock(req, pvfs->odb_context, &f->handle->odb_locking_key);
+	if (lck == NULL) {
+		DEBUG(0,("pvfs_open: failed to lock file '%s' in opendb\n",
+			 name->full_name));
+		/* we were supposed to do a blocking lock, so something
+		   is badly wrong! */
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	DLIST_ADD(pvfs->files.list, f);
+
+	/* setup a destructor to avoid file descriptor leaks on
+	   abnormal termination */
+	talloc_set_destructor(f, pvfs_fnum_destructor);
+	talloc_set_destructor(f->handle, pvfs_handle_destructor);
+
+	/* 
+	 * Only SMB2 takes care of the delete_on_close,
+	 * on existing files
+	 */
+	if (create_options & NTCREATEX_OPTIONS_DELETE_ON_CLOSE &&
+	    req->ctx->protocol >= PROTOCOL_SMB2_02) {
+		del_on_close = true;
+	} else {
+		del_on_close = false;
+	}
+
+	if (pvfs->flags & PVFS_FLAG_FAKE_OPLOCKS) {
+		oplock_level = OPLOCK_NONE;
+	} else if (io->ntcreatex.in.flags & NTCREATEX_FLAGS_REQUEST_BATCH_OPLOCK) {
+		oplock_level = OPLOCK_BATCH;
+	} else if (io->ntcreatex.in.flags & NTCREATEX_FLAGS_REQUEST_OPLOCK) {
+		oplock_level = OPLOCK_EXCLUSIVE;
+	}
+
+	if (req->client_caps & NTVFS_CLIENT_CAP_LEVEL_II_OPLOCKS) {
+		allow_level_II_oplock = true;
+	}
+
+	/* see if we are allowed to open at the same time as existing opens */
+	status = odb_can_open(lck, name->stream_id,
+			      share_access, access_mask, del_on_close,
+			      io->generic.in.open_disposition, false);
+
+	/*
+	 * on a sharing violation we need to retry when the file is closed by
+	 * the other user, or after 1 second
+	 * on a non granted oplock we need to retry when the file is closed by
+	 * the other user, or after 30 seconds
+	*/
+	if ((NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION) ||
+	     NT_STATUS_EQUAL(status, NT_STATUS_OPLOCK_NOT_GRANTED)) &&
+	    (req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return pvfs_open_setup_retry(ntvfs, req, io, f, lck, status);
+	}
+
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(lck);
+		return status;
+	}
+
+	if (access_mask & (SEC_FILE_WRITE_DATA | SEC_FILE_APPEND_DATA)) {
+		flags |= O_RDWR;
+	} else {
+		flags |= O_RDONLY;
+	}
+
+	/* do the actual open */
+	fd = pvfs_sys_open(pvfs, f->handle->name->full_name, flags | O_NONBLOCK, 0, name->allow_override);
+	if (fd == -1) {
+		status = pvfs_map_errno(f->pvfs, errno);
+
+		DEBUG(0,(__location__ " mapped errno %s for %s (was %d)\n", 
+			 nt_errstr(status), f->handle->name->full_name, errno));
+		/*
+		 * STATUS_MORE_ENTRIES is EAGAIN or EWOULDBLOCK
+		 */
+		if (NT_STATUS_EQUAL(status, STATUS_MORE_ENTRIES) &&
+		    (req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+			return pvfs_open_setup_retry(ntvfs, req, io, f, lck, status);
+		}
+
+		talloc_free(lck);
+		return status;
+	}
+
+	f->handle->fd = fd;
+
+	status = brlock_count(f->pvfs->brl_context, f->brl_handle, &count);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(lck);
+		return status;
+	}
+
+	if (count != 0) {
+		oplock_level = OPLOCK_NONE;
+	}
+
+	/* now really mark the file as open */
+	status = odb_open_file(lck, f->handle, name->full_name,
+			       &f->handle->fd, name->dos.write_time,
+			       allow_level_II_oplock,
+			       oplock_level, &oplock_granted);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(lck);
+		return status;
+	}
+
+	f->handle->have_opendb_entry = true;
+
+	if (pvfs->flags & PVFS_FLAG_FAKE_OPLOCKS) {
+		oplock_granted = OPLOCK_BATCH;
+	} else if (oplock_granted != OPLOCK_NONE) {
+		status = pvfs_setup_oplock(f, oplock_granted);
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(lck);
+			return status;
+		}
+	}
+
+	stream_existed = name->stream_exists;
+
+	/* if this was a stream create then create the stream as well */
+	if (!name->stream_exists) {
+		status = pvfs_stream_create(pvfs, f->handle->name, fd);
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(lck);
+			return status;
+		}
+		if (stream_truncate) {
+			status = pvfs_stream_truncate(pvfs, f->handle->name, fd, 0);
+			if (!NT_STATUS_IS_OK(status)) {
+				talloc_free(lck);
+				return status;
+			}
+		}
+	}
+
+	/* re-resolve the open fd */
+	status = pvfs_resolve_name_fd(f->pvfs, fd, f->handle->name, PVFS_RESOLVE_NO_OPENDB);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(lck);
+		return status;
+	}
+
+	if (f->handle->name->stream_id == 0 &&
+	    (io->generic.in.open_disposition == NTCREATEX_DISP_OVERWRITE ||
+	     io->generic.in.open_disposition == NTCREATEX_DISP_OVERWRITE_IF)) {
+		/* for overwrite we may need to replace file permissions */
+		uint32_t attrib = io->ntcreatex.in.file_attr | FILE_ATTRIBUTE_ARCHIVE;
+		mode_t mode = pvfs_fileperms(pvfs, attrib);
+		if (f->handle->name->st.st_mode != mode &&
+		    f->handle->name->dos.attrib != attrib &&
+		    pvfs_sys_fchmod(pvfs, fd, mode, name->allow_override) == -1) {
+			talloc_free(lck);
+			return pvfs_map_errno(pvfs, errno);
+		}
+		name->dos.alloc_size = io->ntcreatex.in.alloc_size;
+		name->dos.attrib = attrib;
+		status = pvfs_dosattrib_save(pvfs, name, fd);
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(lck);
+			return status;
+		}
+	}
+	    
+	talloc_free(lck);
+
+	status = ntvfs_handle_set_backend_data(h, ntvfs, f);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	/* mark the open as having completed fully, so delete on close
+	   can now be used */
+	f->handle->open_completed     = true;
+
+	io->generic.out.oplock_level  = oplock_granted;
+	io->generic.out.file.ntvfs    = h;
+	io->generic.out.create_action = stream_existed?
+		create_action:NTCREATEX_ACTION_CREATED;
+	
+	io->generic.out.create_time   = name->dos.create_time;
+	io->generic.out.access_time   = name->dos.access_time;
+	io->generic.out.write_time    = name->dos.write_time;
+	io->generic.out.change_time   = name->dos.change_time;
+	io->generic.out.attrib        = name->dos.attrib;
+	io->generic.out.alloc_size    = name->dos.alloc_size;
+	io->generic.out.size          = name->st.st_size;
+	io->generic.out.file_type     = FILE_TYPE_DISK;
+	io->generic.out.ipc_state     = 0;
+	io->generic.out.is_directory  = 0;
+
+	return NT_STATUS_OK;
+}
+
+
+/*
+  close a file
+*/
+NTSTATUS pvfs_close(struct ntvfs_module_context *ntvfs,
+		    struct ntvfs_request *req, union smb_close *io)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct pvfs_file *f;
+
+	if (io->generic.level == RAW_CLOSE_SPLCLOSE) {
+		return NT_STATUS_DOS(ERRSRV, ERRerror);
+	}
+
+	if (io->generic.level != RAW_CLOSE_GENERIC) {
+		return ntvfs_map_close(ntvfs, req, io);
+	}
+
+	f = pvfs_find_fd(pvfs, req, io->generic.in.file.ntvfs);
+	if (!f) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	if (!null_time(io->generic.in.write_time)) {
+		f->handle->write_time.update_forced = false;
+		f->handle->write_time.update_on_close = true;
+		unix_to_nt_time(&f->handle->write_time.close_time, io->generic.in.write_time);
+	}
+
+	if (io->generic.in.flags & SMB2_CLOSE_FLAGS_FULL_INFORMATION) {
+		struct pvfs_filename *name;
+		NTSTATUS status;
+		struct pvfs_file_handle *h = f->handle;
+
+		status = pvfs_resolve_name_handle(pvfs, h);
+		if (!NT_STATUS_IS_OK(status)) {
+			return status;
+		}
+		name = h->name;
+
+		io->generic.out.flags = SMB2_CLOSE_FLAGS_FULL_INFORMATION;
+		io->generic.out.create_time = name->dos.create_time;
+		io->generic.out.access_time = name->dos.access_time;
+		io->generic.out.write_time  = name->dos.write_time;
+		io->generic.out.change_time = name->dos.change_time;
+		io->generic.out.alloc_size  = name->dos.alloc_size;
+		io->generic.out.size        = name->st.st_size;
+		io->generic.out.file_attr   = name->dos.attrib;		
+	} else {
+		ZERO_STRUCT(io->generic.out);
+	}
+
+	talloc_free(f);
+
+	return NT_STATUS_OK;
+}
+
+
+/*
+  logoff - close all file descriptors open by a vuid
+*/
+NTSTATUS pvfs_logoff(struct ntvfs_module_context *ntvfs,
+		     struct ntvfs_request *req)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct pvfs_file *f, *next;
+
+	/* If pvfs is NULL, we never logged on, and no files are open. */
+	if(pvfs == NULL) {
+		return NT_STATUS_OK;
+	}
+
+	for (f=pvfs->files.list;f;f=next) {
+		next = f->next;
+		if (f->ntvfs->session_info == req->session_info) {
+			talloc_free(f);
+		}
+	}
+
+	return NT_STATUS_OK;
+}
+
+
+/*
+  exit - close files for the current pid
+*/
+NTSTATUS pvfs_exit(struct ntvfs_module_context *ntvfs,
+		   struct ntvfs_request *req)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct pvfs_file *f, *next;
+
+	for (f=pvfs->files.list;f;f=next) {
+		next = f->next;
+		if (f->ntvfs->session_info == req->session_info &&
+		    f->ntvfs->smbpid == req->smbpid) {
+			talloc_free(f);
+		}
+	}
+
+	return NT_STATUS_OK;
+}
+
+
+/*
+  change the delete on close flag on an already open file
+*/
+NTSTATUS pvfs_set_delete_on_close(struct pvfs_state *pvfs,
+				  struct ntvfs_request *req, 
+				  struct pvfs_file *f, bool del_on_close)
+{
+	struct odb_lock *lck;
+	NTSTATUS status;
+
+	if ((f->handle->name->dos.attrib & FILE_ATTRIBUTE_READONLY) && del_on_close) {
+		return NT_STATUS_CANNOT_DELETE;
+	}
+	
+	if ((f->handle->name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY) &&
+	    !pvfs_directory_empty(pvfs, f->handle->name)) {
+		return NT_STATUS_DIRECTORY_NOT_EMPTY;
+	}
+
+	if (del_on_close) {
+		f->handle->create_options |= NTCREATEX_OPTIONS_DELETE_ON_CLOSE;
+	} else {
+		f->handle->create_options &= ~NTCREATEX_OPTIONS_DELETE_ON_CLOSE;
+	}
+	
+	lck = odb_lock(req, pvfs->odb_context, &f->handle->odb_locking_key);
+	if (lck == NULL) {
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	status = odb_set_delete_on_close(lck, del_on_close);
+
+	talloc_free(lck);
+
+	return status;
+}
+
+
+/*
+  determine if a file can be deleted, or if it is prevented by an
+  already open file
+*/
+NTSTATUS pvfs_can_delete(struct pvfs_state *pvfs, 
+			 struct ntvfs_request *req,
+			 struct pvfs_filename *name,
+			 struct odb_lock **lckp)
+{
+	NTSTATUS status;
+	DATA_BLOB key;
+	struct odb_lock *lck;
+	uint32_t share_access;
+	uint32_t access_mask;
+	bool delete_on_close;
+
+	status = pvfs_locking_key(name, name, &key);
+	if (!NT_STATUS_IS_OK(status)) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	lck = odb_lock(req, pvfs->odb_context, &key);
+	if (lck == NULL) {
+		DEBUG(0,("Unable to lock opendb for can_delete\n"));
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	share_access	= NTCREATEX_SHARE_ACCESS_READ |
+			  NTCREATEX_SHARE_ACCESS_WRITE |
+			  NTCREATEX_SHARE_ACCESS_DELETE;
+	access_mask	= SEC_STD_DELETE;
+	delete_on_close	= true;
+
+	status = odb_can_open(lck, name->stream_id,
+			      share_access, access_mask, delete_on_close,
+			      NTCREATEX_DISP_OPEN, false);
+
+	if (NT_STATUS_IS_OK(status)) {
+		status = pvfs_access_check_simple(pvfs, req, name, access_mask);
+	}
+
+	/*
+	 * if it's a sharing violation or we got no oplock
+	 * only keep the lock if the caller requested access
+	 * to the lock
+	 */
+	if (NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION) ||
+	    NT_STATUS_EQUAL(status, NT_STATUS_OPLOCK_NOT_GRANTED)) {
+		if (lckp) {
+			*lckp = lck;
+		} else {
+			talloc_free(lck);
+		}
+	} else if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(lck);
+		if (lckp) {
+			*lckp = NULL;
+		}
+	} else if (lckp) {
+		*lckp = lck;
+	}
+
+	return status;
+}
+
+/*
+  determine if a file can be renamed, or if it is prevented by an
+  already open file
+*/
+NTSTATUS pvfs_can_rename(struct pvfs_state *pvfs, 
+			 struct ntvfs_request *req,
+			 struct pvfs_filename *name,
+			 struct odb_lock **lckp)
+{
+	NTSTATUS status;
+	DATA_BLOB key;
+	struct odb_lock *lck;
+	uint32_t share_access;
+	uint32_t access_mask;
+	bool delete_on_close;
+
+	status = pvfs_locking_key(name, name, &key);
+	if (!NT_STATUS_IS_OK(status)) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	lck = odb_lock(req, pvfs->odb_context, &key);
+	if (lck == NULL) {
+		DEBUG(0,("Unable to lock opendb for can_stat\n"));
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	share_access	= NTCREATEX_SHARE_ACCESS_READ |
+			  NTCREATEX_SHARE_ACCESS_WRITE;
+	access_mask	= SEC_STD_DELETE;
+	delete_on_close	= false;
+
+	status = odb_can_open(lck, name->stream_id,
+			      share_access, access_mask, delete_on_close,
+			      NTCREATEX_DISP_OPEN, false);
+
+	/*
+	 * if it's a sharing violation or we got no oplock
+	 * only keep the lock if the caller requested access
+	 * to the lock
+	 */
+	if (NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION) ||
+	    NT_STATUS_EQUAL(status, NT_STATUS_OPLOCK_NOT_GRANTED)) {
+		if (lckp) {
+			*lckp = lck;
+		} else {
+			talloc_free(lck);
+		}
+	} else if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(lck);
+		if (lckp) {
+			*lckp = NULL;
+		}
+	} else if (lckp) {
+		*lckp = lck;
+	}
+
+	return status;
+}
+
+/*
+  determine if the file size of a file can be changed,
+  or if it is prevented by an already open file
+*/
+NTSTATUS pvfs_can_update_file_size(struct pvfs_state *pvfs,
+				   struct ntvfs_request *req,
+				   struct pvfs_filename *name,
+				   struct odb_lock **lckp)
+{
+	NTSTATUS status;
+	DATA_BLOB key;
+	struct odb_lock *lck;
+	uint32_t share_access;
+	uint32_t access_mask;
+	bool break_to_none;
+	bool delete_on_close;
+
+	status = pvfs_locking_key(name, name, &key);
+	if (!NT_STATUS_IS_OK(status)) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	lck = odb_lock(req, pvfs->odb_context, &key);
+	if (lck == NULL) {
+		DEBUG(0,("Unable to lock opendb for can_stat\n"));
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	share_access	= NTCREATEX_SHARE_ACCESS_READ |
+			  NTCREATEX_SHARE_ACCESS_WRITE |
+			  NTCREATEX_SHARE_ACCESS_DELETE;
+	/*
+	 * this code previous set only SEC_FILE_WRITE_ATTRIBUTE, with
+	 * a comment that this seemed to be wrong, but matched windows
+	 * behaviour. It now appears that this windows behaviour is
+	 * just a bug.
+	 */
+	access_mask	= SEC_FILE_WRITE_ATTRIBUTE | SEC_FILE_WRITE_DATA | SEC_FILE_APPEND_DATA;
+	delete_on_close	= false;
+	break_to_none	= true;
+
+	status = odb_can_open(lck, name->stream_id,
+			      share_access, access_mask, delete_on_close,
+			      NTCREATEX_DISP_OPEN, break_to_none);
+
+	/*
+	 * if it's a sharing violation or we got no oplock
+	 * only keep the lock if the caller requested access
+	 * to the lock
+	 */
+	if (NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION) ||
+	    NT_STATUS_EQUAL(status, NT_STATUS_OPLOCK_NOT_GRANTED)) {
+		if (lckp) {
+			*lckp = lck;
+		} else {
+			talloc_free(lck);
+		}
+	} else if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(lck);
+		if (lckp) {
+			*lckp = NULL;
+		}
+	} else if (lckp) {
+		*lckp = lck;
+	}
+
+	return status;
+}
+
+/*
+  determine if file meta data can be accessed, or if it is prevented by an
+  already open file
+*/
+NTSTATUS pvfs_can_stat(struct pvfs_state *pvfs, 
+		       struct ntvfs_request *req,
+		       struct pvfs_filename *name)
+{
+	NTSTATUS status;
+	DATA_BLOB key;
+	struct odb_lock *lck;
+	uint32_t share_access;
+	uint32_t access_mask;
+	bool delete_on_close;
+
+	status = pvfs_locking_key(name, name, &key);
+	if (!NT_STATUS_IS_OK(status)) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	lck = odb_lock(req, pvfs->odb_context, &key);
+	if (lck == NULL) {
+		DEBUG(0,("Unable to lock opendb for can_stat\n"));
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	share_access	= NTCREATEX_SHARE_ACCESS_READ |
+			  NTCREATEX_SHARE_ACCESS_WRITE;
+	access_mask	= SEC_FILE_READ_ATTRIBUTE;
+	delete_on_close	= false;
+
+	status = odb_can_open(lck, name->stream_id,
+			      share_access, access_mask, delete_on_close,
+			      NTCREATEX_DISP_OPEN, false);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(lck);
+	}
+
+	return status;
+}
+
+
+/*
+  determine if delete on close is set on 
+*/
+bool pvfs_delete_on_close_set(struct pvfs_state *pvfs, struct pvfs_file_handle *h)
+{
+	NTSTATUS status;
+	bool del_on_close;
+
+	status = odb_get_file_infos(pvfs->odb_context, &h->odb_locking_key, 
+				    &del_on_close, NULL);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(1,("WARNING: unable to determine delete on close status for open file\n"));
+		return false;
+	}
+
+	return del_on_close;
+}
diff --git a/source4/ntvfs/posix/pvfs_oplock.c b/source4/ntvfs/posix/pvfs_oplock.c
new file mode 100644
index 0000000..ba5d25d
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_oplock.c
@@ -0,0 +1,307 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - oplock handling
+
+   Copyright (C) Stefan Metzmacher 2008
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "lib/messaging/messaging.h"
+#include "lib/messaging/irpc.h"
+#include "system/time.h"
+#include "vfs_posix.h"
+
+
+struct pvfs_oplock {
+	struct pvfs_file_handle *handle;
+	struct pvfs_file *file;
+	uint32_t level;
+	struct timeval break_to_level_II;
+	struct timeval break_to_none;
+	struct imessaging_context *msg_ctx;
+};
+
+static NTSTATUS pvfs_oplock_release_internal(struct pvfs_file_handle *h,
+					     uint8_t oplock_break)
+{
+	struct odb_lock *olck;
+	NTSTATUS status;
+
+	if (h->fd == -1) {
+		return NT_STATUS_FILE_IS_A_DIRECTORY;
+	}
+
+	if (!h->have_opendb_entry) {
+		return NT_STATUS_FOOBAR;
+	}
+
+	if (!h->oplock) {
+		return NT_STATUS_FOOBAR;
+	}
+
+	olck = odb_lock(h, h->pvfs->odb_context, &h->odb_locking_key);
+	if (olck == NULL) {
+		DEBUG(0,("Unable to lock opendb for oplock update\n"));
+		return NT_STATUS_FOOBAR;
+	}
+
+	if (oplock_break == OPLOCK_BREAK_TO_NONE) {
+		h->oplock->level = OPLOCK_NONE;
+	} else if (oplock_break == OPLOCK_BREAK_TO_LEVEL_II) {
+		h->oplock->level = OPLOCK_LEVEL_II;
+	} else {
+		/* fallback to level II in case of a invalid value */
+		DEBUG(1,("unexpected oplock break level[0x%02X]\n", oplock_break));
+		h->oplock->level = OPLOCK_LEVEL_II;
+	}
+	status = odb_update_oplock(olck, h, h->oplock->level);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0,("Unable to update oplock level for '%s' - %s\n",
+			 h->name->full_name, nt_errstr(status)));
+		talloc_free(olck);
+		return status;
+	}
+
+	talloc_free(olck);
+
+	/* after a break to none, we no longer have an oplock attached */
+	if (h->oplock->level == OPLOCK_NONE) {
+		talloc_free(h->oplock);
+		h->oplock = NULL;
+	}
+
+	return NT_STATUS_OK;
+}
+
+/*
+  receive oplock breaks and forward them to the client
+*/
+static void pvfs_oplock_break(struct pvfs_oplock *opl, uint8_t level)
+{
+	NTSTATUS status;
+	struct pvfs_file *f = opl->file;
+	struct pvfs_file_handle *h = opl->handle;
+	struct pvfs_state *pvfs = h->pvfs;
+	struct timeval cur = timeval_current();
+	struct timeval *last = NULL;
+	struct timeval end;
+
+	switch (level) {
+	case OPLOCK_BREAK_TO_LEVEL_II:
+		last = &opl->break_to_level_II;
+		break;
+	case OPLOCK_BREAK_TO_NONE:
+		last = &opl->break_to_none;
+		break;
+	}
+
+	if (!last) {
+		DEBUG(0,("%s: got unexpected level[0x%02X]\n",
+			__FUNCTION__, level));
+		return;
+	}
+
+	if (timeval_is_zero(last)) {
+		/*
+		 * this is the first break we for this level
+		 * remember the time
+		 */
+		*last = cur;
+
+		DEBUG(5,("%s: sending oplock break level %d for '%s' %p\n",
+			__FUNCTION__, level, h->name->original_name, h));
+		status = ntvfs_send_oplock_break(pvfs->ntvfs, f->ntvfs, level);
+		if (!NT_STATUS_IS_OK(status)) {
+			DEBUG(0,("%s: sending oplock break failed: %s\n",
+				__FUNCTION__, nt_errstr(status)));
+		}
+		return;
+	}
+
+	end = timeval_add(last, pvfs->oplock_break_timeout, 0);
+
+	if (timeval_compare(&cur, &end) < 0) {
+		/*
+		 * If it's not expired just ignore the break
+		 * as we already sent the break request to the client
+		 */
+		DEBUG(0,("%s: do not resend oplock break level %d for '%s' %p\n",
+			__FUNCTION__, level, h->name->original_name, h));
+		return;
+	}
+
+	/*
+	 * If the client did not send a release within the
+	 * oplock break timeout time frame we auto release
+	 * the oplock
+	 */
+	DEBUG(0,("%s: auto release oplock level %d for '%s' %p\n",
+		__FUNCTION__, level, h->name->original_name, h));
+	status = pvfs_oplock_release_internal(h, level);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0,("%s: failed to auto release the oplock[0x%02X]: %s\n",
+			__FUNCTION__, level, nt_errstr(status)));
+	}
+}
+
+static void pvfs_oplock_break_dispatch(struct imessaging_context *msg,
+				       void *private_data,
+				       uint32_t msg_type,
+				       struct server_id src,
+				       size_t num_fds,
+				       int *fds,
+				       DATA_BLOB *data)
+{
+	struct pvfs_oplock *opl = talloc_get_type(private_data,
+						  struct pvfs_oplock);
+	struct opendb_oplock_break opb;
+
+	if (num_fds != 0) {
+		DBG_WARNING("Received %zu fds, ignoring message\n", num_fds);
+		return;
+	}
+
+	ZERO_STRUCT(opb);
+
+	/* we need to check that this one is for us. See
+	   imessaging_send_ptr() for the other side of this.
+	 */
+	if (data->length == sizeof(struct opendb_oplock_break)) {
+		struct opendb_oplock_break *p;
+		p = (struct opendb_oplock_break *)data->data;
+		opb = *p;
+	} else {
+		DEBUG(0,("%s: ignore oplock break with length[%u]\n",
+			 __location__, (unsigned)data->length));
+		return;
+	}
+	if (opb.file_handle != opl->handle) {
+		return;
+	}
+
+	/*
+	 * maybe we should use ntvfs_setup_async()
+	 */
+	pvfs_oplock_break(opl, opb.level);
+}
+
+static int pvfs_oplock_destructor(struct pvfs_oplock *opl)
+{
+	imessaging_deregister(opl->msg_ctx, MSG_NTVFS_OPLOCK_BREAK, opl);
+	return 0;
+}
+
+NTSTATUS pvfs_setup_oplock(struct pvfs_file *f, uint32_t oplock_granted)
+{
+	NTSTATUS status;
+	struct pvfs_oplock *opl;
+	uint32_t level = OPLOCK_NONE;
+
+	f->handle->oplock = NULL;
+
+	switch (oplock_granted) {
+	case EXCLUSIVE_OPLOCK_RETURN:
+		level = OPLOCK_EXCLUSIVE;
+		break;
+	case BATCH_OPLOCK_RETURN:
+		level = OPLOCK_BATCH;
+		break;
+	case LEVEL_II_OPLOCK_RETURN:
+		level = OPLOCK_LEVEL_II;
+		break;
+	}
+
+	if (level == OPLOCK_NONE) {
+		return NT_STATUS_OK;
+	}
+
+	opl = talloc_zero(f->handle, struct pvfs_oplock);
+	NT_STATUS_HAVE_NO_MEMORY(opl);
+
+	opl->handle	= f->handle;
+	opl->file	= f;
+	opl->level	= level;
+	opl->msg_ctx	= f->pvfs->ntvfs->ctx->msg_ctx;
+
+	status = imessaging_register(opl->msg_ctx,
+				    opl,
+				    MSG_NTVFS_OPLOCK_BREAK,
+				    pvfs_oplock_break_dispatch);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	/* destructor */
+	talloc_set_destructor(opl, pvfs_oplock_destructor);
+
+	f->handle->oplock = opl;
+
+	return NT_STATUS_OK;
+}
+
+NTSTATUS pvfs_oplock_release(struct ntvfs_module_context *ntvfs,
+			     struct ntvfs_request *req, union smb_lock *lck)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct pvfs_file *f;
+	uint8_t oplock_break;
+	NTSTATUS status;
+
+	f = pvfs_find_fd(pvfs, req, lck->lockx.in.file.ntvfs);
+	if (!f) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	oplock_break = (lck->lockx.in.mode >> 8) & 0xFF;
+
+	status = pvfs_oplock_release_internal(f->handle, oplock_break);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0,("%s: failed to release the oplock[0x%02X]: %s\n",
+			__FUNCTION__, oplock_break, nt_errstr(status)));
+		return status;
+	}
+
+	return NT_STATUS_OK;
+}
+
+NTSTATUS pvfs_break_level2_oplocks(struct pvfs_file *f)
+{
+	struct pvfs_file_handle *h = f->handle;
+	struct odb_lock *olck;
+	NTSTATUS status;
+
+	if (h->oplock && h->oplock->level != OPLOCK_LEVEL_II) {
+		return NT_STATUS_OK;
+	}
+
+	olck = odb_lock(h, h->pvfs->odb_context, &h->odb_locking_key);
+	if (olck == NULL) {
+		DEBUG(0,("Unable to lock opendb for oplock update\n"));
+		return NT_STATUS_FOOBAR;
+	}
+
+	status = odb_break_oplocks(olck);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0,("Unable to break level2 oplocks to none for '%s' - %s\n",
+			 h->name->full_name, nt_errstr(status)));
+		talloc_free(olck);
+		return status;
+	}
+
+	talloc_free(olck);
+
+	return NT_STATUS_OK;
+}
diff --git a/source4/ntvfs/posix/pvfs_qfileinfo.c b/source4/ntvfs/posix/pvfs_qfileinfo.c
new file mode 100644
index 0000000..be601a2
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_qfileinfo.c
@@ -0,0 +1,468 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - read
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "librpc/gen_ndr/xattr.h"
+
+
+/*
+  determine what access bits are needed for a call
+*/
+static uint32_t pvfs_fileinfo_access(union smb_fileinfo *info)
+{
+	uint32_t needed;
+
+	switch (info->generic.level) {
+	case RAW_FILEINFO_EA_LIST:
+	case RAW_FILEINFO_ALL_EAS:
+		needed = SEC_FILE_READ_EA;
+		break;
+
+	case RAW_FILEINFO_IS_NAME_VALID:
+		needed = 0;
+		break;
+
+	case RAW_FILEINFO_ACCESS_INFORMATION:
+		needed = 0;
+		break;
+
+	case RAW_FILEINFO_STREAM_INFO:
+	case RAW_FILEINFO_STREAM_INFORMATION:
+		needed = 0;
+		break;
+
+	case RAW_FILEINFO_SEC_DESC:
+		needed = 0;
+		if (info->query_secdesc.in.secinfo_flags & (SECINFO_OWNER|SECINFO_GROUP)) {
+			needed |= SEC_STD_READ_CONTROL;
+		}
+		if (info->query_secdesc.in.secinfo_flags & SECINFO_DACL) {
+			needed |= SEC_STD_READ_CONTROL;
+		}
+		if (info->query_secdesc.in.secinfo_flags & SECINFO_SACL) {
+			needed |= SEC_FLAG_SYSTEM_SECURITY;
+		}
+		break;
+
+	default:
+		needed = SEC_FILE_READ_ATTRIBUTE;
+		break;
+	}
+
+	return needed;
+}
+
+/*
+  reply to a RAW_FILEINFO_EA_LIST call
+*/
+NTSTATUS pvfs_query_ea_list(struct pvfs_state *pvfs, TALLOC_CTX *mem_ctx, 
+			    struct pvfs_filename *name, int fd, 
+			    unsigned int num_names,
+			    struct ea_name *names,
+			    struct smb_ea_list *eas)
+{
+	NTSTATUS status;
+	int i;
+	struct xattr_DosEAs *ealist = talloc(mem_ctx, struct xattr_DosEAs);
+
+	ZERO_STRUCTP(eas);
+	status = pvfs_doseas_load(pvfs, name, fd, ealist);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+	eas->eas = talloc_array(mem_ctx, struct ea_struct, num_names);
+	if (eas->eas == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	eas->num_eas = num_names;
+	for (i=0;i<num_names;i++) {
+		int j;
+		eas->eas[i].flags = 0;
+		eas->eas[i].name.s = names[i].name.s;
+		eas->eas[i].value = data_blob(NULL, 0);
+		for (j=0;j<ealist->num_eas;j++) {
+			if (strcasecmp_m(eas->eas[i].name.s, 
+				       ealist->eas[j].name) == 0) {
+				if (ealist->eas[j].value.length == 0) {
+					continue;
+				}
+				eas->eas[i].value = ealist->eas[j].value;
+				break;
+			}
+		}
+	}
+	return NT_STATUS_OK;
+}
+
+/*
+  reply to a RAW_FILEINFO_ALL_EAS call
+*/
+static NTSTATUS pvfs_query_all_eas(struct pvfs_state *pvfs, TALLOC_CTX *mem_ctx, 
+				   struct pvfs_filename *name, int fd, 
+				   struct smb_ea_list *eas)
+{
+	NTSTATUS status;
+	int i;
+	struct xattr_DosEAs *ealist = talloc(mem_ctx, struct xattr_DosEAs);
+
+	ZERO_STRUCTP(eas);
+	status = pvfs_doseas_load(pvfs, name, fd, ealist);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+	eas->eas = talloc_array(mem_ctx, struct ea_struct, ealist->num_eas);
+	if (eas->eas == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	eas->num_eas = 0;
+	for (i=0;i<ealist->num_eas;i++) {
+		eas->eas[eas->num_eas].flags = 0;
+		eas->eas[eas->num_eas].name.s = ealist->eas[i].name;
+		if (ealist->eas[i].value.length == 0) {
+			continue;
+		}
+		eas->eas[eas->num_eas].value = ealist->eas[i].value;
+		eas->num_eas++;
+	}
+	return NT_STATUS_OK;
+}
+
+/*
+  approximately map a struct pvfs_filename to a generic fileinfo struct
+*/
+static NTSTATUS pvfs_map_fileinfo(struct pvfs_state *pvfs, 
+				  struct ntvfs_request *req,
+				  struct pvfs_filename *name, union smb_fileinfo *info, 
+				  int fd)
+{
+	switch (info->generic.level) {
+	case RAW_FILEINFO_GETATTR:
+		info->getattr.out.attrib     = name->dos.attrib;
+		info->getattr.out.size       = name->st.st_size;
+		info->getattr.out.write_time = nt_time_to_unix(name->dos.write_time);
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_GETATTRE:
+	case RAW_FILEINFO_STANDARD:
+		info->standard.out.create_time = nt_time_to_unix(name->dos.create_time);
+		info->standard.out.access_time = nt_time_to_unix(name->dos.access_time);
+		info->standard.out.write_time  = nt_time_to_unix(name->dos.write_time);
+		info->standard.out.size        = name->st.st_size;
+		info->standard.out.alloc_size  = name->dos.alloc_size;
+		info->standard.out.attrib      = name->dos.attrib;
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_EA_SIZE:
+		info->ea_size.out.create_time = nt_time_to_unix(name->dos.create_time);
+		info->ea_size.out.access_time = nt_time_to_unix(name->dos.access_time);
+		info->ea_size.out.write_time  = nt_time_to_unix(name->dos.write_time);
+		info->ea_size.out.size        = name->st.st_size;
+		info->ea_size.out.alloc_size  = name->dos.alloc_size;
+		info->ea_size.out.attrib      = name->dos.attrib;
+		info->ea_size.out.ea_size     = name->dos.ea_size;
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_EA_LIST:
+		return pvfs_query_ea_list(pvfs, req, name, fd, 
+					  info->ea_list.in.num_names,
+					  info->ea_list.in.ea_names, 
+					  &info->ea_list.out);
+
+	case RAW_FILEINFO_ALL_EAS:
+		return pvfs_query_all_eas(pvfs, req, name, fd, &info->all_eas.out);
+
+	case RAW_FILEINFO_SMB2_ALL_EAS: {
+		NTSTATUS status = pvfs_query_all_eas(pvfs, req, name, fd, &info->all_eas.out);
+		if (NT_STATUS_IS_OK(status) &&
+		    info->all_eas.out.num_eas == 0) {
+			return NT_STATUS_NO_EAS_ON_FILE;
+		}
+		return status;
+	}
+
+	case RAW_FILEINFO_IS_NAME_VALID:
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_BASIC_INFO:
+	case RAW_FILEINFO_BASIC_INFORMATION:
+		info->basic_info.out.create_time = name->dos.create_time;
+		info->basic_info.out.access_time = name->dos.access_time;
+		info->basic_info.out.write_time  = name->dos.write_time;
+		info->basic_info.out.change_time = name->dos.change_time;
+		info->basic_info.out.attrib      = name->dos.attrib;
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_STANDARD_INFO:
+	case RAW_FILEINFO_STANDARD_INFORMATION:
+		info->standard_info.out.alloc_size     = name->dos.alloc_size;
+		info->standard_info.out.size           = name->st.st_size;
+		info->standard_info.out.nlink          = name->dos.nlink;
+		info->standard_info.out.delete_pending = 0; /* only for qfileinfo */
+		info->standard_info.out.directory   = 
+			(name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY)? 1 : 0;
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_EA_INFO:
+	case RAW_FILEINFO_EA_INFORMATION:
+		info->ea_info.out.ea_size = name->dos.ea_size;
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_NAME_INFO:
+	case RAW_FILEINFO_NAME_INFORMATION:
+		if (req->ctx->protocol >= PROTOCOL_SMB2_02) {
+			/* strange that SMB2 doesn't have this */
+			return NT_STATUS_NOT_SUPPORTED;
+		}
+		info->name_info.out.fname.s = name->original_name;
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_ALL_INFO:
+	case RAW_FILEINFO_ALL_INFORMATION:
+		info->all_info.out.create_time    = name->dos.create_time;
+		info->all_info.out.access_time    = name->dos.access_time;
+		info->all_info.out.write_time     = name->dos.write_time;
+		info->all_info.out.change_time    = name->dos.change_time;
+		info->all_info.out.attrib         = name->dos.attrib;
+		info->all_info.out.alloc_size     = name->dos.alloc_size;
+		info->all_info.out.size           = name->st.st_size;
+		info->all_info.out.nlink          = name->dos.nlink;
+		info->all_info.out.delete_pending = 0; /* only set by qfileinfo */
+		info->all_info.out.directory      = 
+			(name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY)? 1 : 0;
+		info->all_info.out.ea_size        = name->dos.ea_size;
+		info->all_info.out.fname.s        = name->original_name;
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_ALT_NAME_INFO:
+	case RAW_FILEINFO_ALT_NAME_INFORMATION:
+	case RAW_FILEINFO_SMB2_ALT_NAME_INFORMATION:
+		info->name_info.out.fname.s = pvfs_short_name(pvfs, name, name);
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_STREAM_INFO:
+	case RAW_FILEINFO_STREAM_INFORMATION:
+		return pvfs_stream_information(pvfs, req, name, fd, &info->stream_info.out);
+
+	case RAW_FILEINFO_COMPRESSION_INFO:
+	case RAW_FILEINFO_COMPRESSION_INFORMATION:
+		info->compression_info.out.compressed_size = name->st.st_size;
+		info->compression_info.out.format          = 0;
+		info->compression_info.out.unit_shift      = 0;
+		info->compression_info.out.chunk_shift     = 0;
+		info->compression_info.out.cluster_shift   = 0;
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_INTERNAL_INFORMATION:
+		info->internal_information.out.file_id = name->dos.file_id;
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_ACCESS_INFORMATION:
+		info->access_information.out.access_flags = 0; /* only set by qfileinfo */
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_POSITION_INFORMATION:
+		info->position_information.out.position = 0; /* only set by qfileinfo */
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_MODE_INFORMATION:
+		info->mode_information.out.mode = 0; /* only set by qfileinfo */
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_ALIGNMENT_INFORMATION:
+		info->alignment_information.out.alignment_requirement = 0;
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_NETWORK_OPEN_INFORMATION:
+		info->network_open_information.out.create_time = name->dos.create_time;
+		info->network_open_information.out.access_time = name->dos.access_time;
+		info->network_open_information.out.write_time  = name->dos.write_time;
+		info->network_open_information.out.change_time = name->dos.change_time;
+		info->network_open_information.out.alloc_size  = name->dos.alloc_size;
+		info->network_open_information.out.size        = name->st.st_size;
+		info->network_open_information.out.attrib      = name->dos.attrib;
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_ATTRIBUTE_TAG_INFORMATION:
+		info->attribute_tag_information.out.attrib      = name->dos.attrib;
+		info->attribute_tag_information.out.reparse_tag = 0;
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_SEC_DESC:
+		return pvfs_acl_query(pvfs, req, name, fd, info);
+
+	case RAW_FILEINFO_SMB2_ALL_INFORMATION:
+		info->all_info2.out.create_time    = name->dos.create_time;
+		info->all_info2.out.access_time    = name->dos.access_time;
+		info->all_info2.out.write_time     = name->dos.write_time;
+		info->all_info2.out.change_time    = name->dos.change_time;
+		info->all_info2.out.attrib         = name->dos.attrib;
+		info->all_info2.out.unknown1       = 0;
+		info->all_info2.out.alloc_size     = name->dos.alloc_size;
+		info->all_info2.out.size           = name->st.st_size;
+		info->all_info2.out.nlink          = name->dos.nlink;
+		info->all_info2.out.delete_pending = 0; /* only set by qfileinfo */
+		info->all_info2.out.directory      = 
+			(name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY)? 1 : 0;
+		info->all_info2.out.file_id        = name->dos.file_id;
+		info->all_info2.out.ea_size        = name->dos.ea_size;
+		info->all_info2.out.access_mask    = 0; /* only set by qfileinfo */
+		info->all_info2.out.position       = 0; /* only set by qfileinfo */
+		info->all_info2.out.mode           = 0; /* only set by qfileinfo */
+		info->all_info2.out.alignment_requirement = 0;
+		/* windows wants the full path on disk for this
+		   result, but I really don't want to expose that on
+		   the wire, so I'll give the path with a share
+		   prefix, which is a good approximation */
+		info->all_info2.out.fname.s = talloc_asprintf(req, "\\%s\\%s",
+							      pvfs->share_name, 
+							      name->original_name);
+		NT_STATUS_HAVE_NO_MEMORY(info->all_info2.out.fname.s);
+		return NT_STATUS_OK;
+
+	case RAW_FILEINFO_GENERIC:
+	case RAW_FILEINFO_UNIX_BASIC:
+	case RAW_FILEINFO_UNIX_INFO2:
+	case RAW_FILEINFO_UNIX_LINK:
+		return NT_STATUS_INVALID_LEVEL;
+	case RAW_FILEINFO_NORMALIZED_NAME_INFORMATION:
+		return NT_STATUS_NOT_SUPPORTED;
+	}
+
+	return NT_STATUS_INVALID_LEVEL;
+}
+
+/*
+  return info on a pathname
+*/
+NTSTATUS pvfs_qpathinfo(struct ntvfs_module_context *ntvfs,
+		        struct ntvfs_request *req, union smb_fileinfo *info)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct pvfs_filename *name;
+	NTSTATUS status;
+
+	/* resolve the cifs name to a posix name */
+	status = pvfs_resolve_name(pvfs, req, info->generic.in.file.path, PVFS_RESOLVE_STREAMS, &name);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	if (!name->stream_exists) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	status = pvfs_can_stat(pvfs, req, name);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	status = pvfs_access_check_simple(pvfs, req, name, 
+					  pvfs_fileinfo_access(info));
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	status = pvfs_map_fileinfo(pvfs, req, name, info, -1);
+
+	return status;
+}
+
+/*
+  query info on a open file
+*/
+NTSTATUS pvfs_qfileinfo(struct ntvfs_module_context *ntvfs,
+		        struct ntvfs_request *req, union smb_fileinfo *info)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct pvfs_file *f;
+	struct pvfs_file_handle *h;
+	NTSTATUS status;
+	uint32_t access_needed;
+
+	f = pvfs_find_fd(pvfs, req, info->generic.in.file.ntvfs);
+	if (!f) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+	h = f->handle;
+
+	access_needed = pvfs_fileinfo_access(info);
+	if ((f->access_mask & access_needed) != access_needed) {
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
+	/* update the file information */
+	status = pvfs_resolve_name_handle(pvfs, h);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+	
+	status = pvfs_map_fileinfo(pvfs, req, h->name, info, h->fd);
+
+	/* a qfileinfo can fill in a bit more info than a qpathinfo -
+	   now modify the levels that need to be fixed up */
+	switch (info->generic.level) {
+	case RAW_FILEINFO_STANDARD_INFO:
+	case RAW_FILEINFO_STANDARD_INFORMATION:
+		if (pvfs_delete_on_close_set(pvfs, h)) {
+			info->standard_info.out.delete_pending = 1;
+			info->standard_info.out.nlink--;
+		}
+		break;
+
+	case RAW_FILEINFO_ALL_INFO:
+	case RAW_FILEINFO_ALL_INFORMATION:
+		if (pvfs_delete_on_close_set(pvfs, h)) {
+			info->all_info.out.delete_pending = 1;
+			info->all_info.out.nlink--;
+		}
+		break;
+
+	case RAW_FILEINFO_POSITION_INFORMATION:
+		info->position_information.out.position = h->position;
+		break;
+
+	case RAW_FILEINFO_ACCESS_INFORMATION:
+		info->access_information.out.access_flags = f->access_mask;
+		break;
+
+	case RAW_FILEINFO_MODE_INFORMATION:
+		info->mode_information.out.mode = h->mode;
+		break;
+
+	case RAW_FILEINFO_SMB2_ALL_INFORMATION:
+		if (pvfs_delete_on_close_set(pvfs, h)) {
+			info->all_info2.out.delete_pending = 1;
+			info->all_info2.out.nlink--;
+		}
+		info->all_info2.out.position	= h->position;
+		info->all_info2.out.access_mask	= f->access_mask;
+		info->all_info2.out.mode	= h->mode;
+		break;
+
+	default:
+		break;
+	}
+	
+	return status;
+}
diff --git a/source4/ntvfs/posix/pvfs_read.c b/source4/ntvfs/posix/pvfs_read.c
new file mode 100644
index 0000000..09eedd5
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_read.c
@@ -0,0 +1,103 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - read
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "lib/events/events.h"
+
+/*
+  read from a file
+*/
+NTSTATUS pvfs_read(struct ntvfs_module_context *ntvfs,
+		   struct ntvfs_request *req, union smb_read *rd)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	ssize_t ret;
+	struct pvfs_file *f;
+	NTSTATUS status;
+	uint32_t maxcnt;
+	uint32_t mask;
+
+	if (rd->generic.level != RAW_READ_READX) {
+		return ntvfs_map_read(ntvfs, req, rd);
+	}
+
+	f = pvfs_find_fd(pvfs, req, rd->readx.in.file.ntvfs);
+	if (!f) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	if (f->handle->fd == -1) {
+		return NT_STATUS_INVALID_DEVICE_REQUEST;
+	}
+
+	mask = SEC_FILE_READ_DATA;
+	if (rd->readx.in.read_for_execute) {
+		mask |= SEC_FILE_EXECUTE;
+	}
+	if (!(f->access_mask & mask)) {
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
+	maxcnt = rd->readx.in.maxcnt;
+	if (maxcnt > 2*UINT16_MAX && req->ctx->protocol < PROTOCOL_SMB2_02) {
+		DEBUG(3,(__location__ ": Invalid SMB maxcnt 0x%x\n", maxcnt));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	status = pvfs_check_lock(pvfs, f, req->smbpid, 
+				 rd->readx.in.offset,
+				 maxcnt,
+				 READ_LOCK);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	if (f->handle->name->stream_name) {
+		ret = pvfs_stream_read(pvfs, f->handle, 
+				       rd->readx.out.data, maxcnt, rd->readx.in.offset);
+	} else {
+		ret = pread(f->handle->fd, 
+			    rd->readx.out.data, 
+			    maxcnt,
+			    rd->readx.in.offset);
+	}
+	if (ret == -1) {
+		return pvfs_map_errno(pvfs, errno);
+	}
+
+	/* only SMB2 honors mincnt */
+	if (req->ctx->protocol >= PROTOCOL_SMB2_02) {
+		if (rd->readx.in.mincnt > ret ||
+		    (ret == 0 && maxcnt > 0)) {
+			return NT_STATUS_END_OF_FILE;
+		}
+	}
+
+	f->handle->position = f->handle->seek_offset = rd->readx.in.offset + ret;
+
+	rd->readx.out.nread = ret;
+	rd->readx.out.remaining = 0xFFFF;
+	rd->readx.out.compaction_mode = 0; 
+
+	return NT_STATUS_OK;
+}
diff --git a/source4/ntvfs/posix/pvfs_rename.c b/source4/ntvfs/posix/pvfs_rename.c
new file mode 100644
index 0000000..4327161
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_rename.c
@@ -0,0 +1,675 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - rename
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "librpc/gen_ndr/security.h"
+#include "param/param.h"
+
+
+/*
+  do a file rename, and send any notify triggers
+*/
+NTSTATUS pvfs_do_rename(struct pvfs_state *pvfs,
+			struct odb_lock *lck,
+			const struct pvfs_filename *name1,
+			const char *name2)
+{
+	const char *r1, *r2;
+	uint32_t mask;
+	NTSTATUS status;
+
+	if (pvfs_sys_rename(pvfs, name1->full_name, name2,
+			    name1->allow_override) == -1) {
+		return pvfs_map_errno(pvfs, errno);
+	}
+
+	status = odb_rename(lck, name2);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	if (name1->dos.attrib & FILE_ATTRIBUTE_DIRECTORY) {
+		mask = FILE_NOTIFY_CHANGE_DIR_NAME;
+	} else {
+		mask = FILE_NOTIFY_CHANGE_FILE_NAME;
+	}
+	/* 
+	   renames to the same directory cause a OLD_NAME->NEW_NAME notify.
+	   renames to a different directory are considered a remove/add 
+	*/
+	r1 = strrchr_m(name1->full_name, '/');
+	r2 = strrchr_m(name2, '/');
+
+	if ((r1-name1->full_name) != (r2-name2) ||
+	    strncmp(name1->full_name, name2, r1-name1->full_name) != 0) {
+		notify_trigger(pvfs->notify_context, 
+			       NOTIFY_ACTION_REMOVED, 
+			       mask,
+			       name1->full_name);
+		notify_trigger(pvfs->notify_context, 
+			       NOTIFY_ACTION_ADDED, 
+			       mask,
+			       name2);
+	} else {
+		notify_trigger(pvfs->notify_context, 
+			       NOTIFY_ACTION_OLD_NAME, 
+			       mask,
+			       name1->full_name);
+		notify_trigger(pvfs->notify_context, 
+			       NOTIFY_ACTION_NEW_NAME, 
+			       mask,
+			       name2);
+	}
+
+	/* this is a strange one. w2k3 gives an additional event for CHANGE_ATTRIBUTES
+	   and CHANGE_CREATION on the new file when renaming files, but not 
+	   directories */
+	if ((name1->dos.attrib & FILE_ATTRIBUTE_DIRECTORY) == 0) {
+		notify_trigger(pvfs->notify_context, 
+			       NOTIFY_ACTION_MODIFIED, 
+			       FILE_NOTIFY_CHANGE_ATTRIBUTES|FILE_NOTIFY_CHANGE_CREATION,
+			       name2);
+	}
+	
+	return NT_STATUS_OK;
+}
+
+
+/*
+  resolve a wildcard rename pattern. This works on one component of the name
+*/
+static const char *pvfs_resolve_wildcard_component(TALLOC_CTX *mem_ctx, 
+						   const char *fname, 
+						   const char *pattern)
+{
+	const char *p1, *p2;
+	char *dest, *d;
+
+	/* the length is bounded by the length of the two strings combined */
+	dest = talloc_array(mem_ctx, char, strlen(fname) + strlen(pattern) + 1);
+	if (dest == NULL) {
+		return NULL;
+	}
+
+	p1 = fname;
+	p2 = pattern;
+	d = dest;
+
+	while (*p2) {
+		codepoint_t c1, c2;
+		size_t c_size1, c_size2;
+		c1 = next_codepoint(p1, &c_size1);
+		c2 = next_codepoint(p2, &c_size2);
+		if (c2 == '?') {
+			d += push_codepoint(d, c1);
+		} else if (c2 == '*') {
+			memcpy(d, p1, strlen(p1));
+			d += strlen(p1);
+			break;
+		} else {
+			d += push_codepoint(d, c2);
+		}
+
+		p1 += c_size1;
+		p2 += c_size2;
+	}
+
+	*d = 0;
+
+	talloc_set_name_const(dest, dest);
+
+	return dest;
+}
+
+/*
+  resolve a wildcard rename pattern.
+*/
+static const char *pvfs_resolve_wildcard(TALLOC_CTX *mem_ctx, 
+					 const char *fname, 
+					 const char *pattern)
+{
+	const char *base1, *base2;
+	const char *ext1, *ext2;
+	char *p;
+
+	/* break into base part plus extension */
+	p = strrchr_m(fname, '.');
+	if (p == NULL) {
+		ext1 = "";
+		base1 = fname;
+	} else {
+		ext1 = talloc_strdup(mem_ctx, p+1);
+		base1 = talloc_strndup(mem_ctx, fname, p-fname);
+	}
+	if (ext1 == NULL || base1 == NULL) {
+		return NULL;
+	}
+
+	p = strrchr_m(pattern, '.');
+	if (p == NULL) {
+		ext2 = "";
+		base2 = fname;
+	} else {
+		ext2 = talloc_strdup(mem_ctx, p+1);
+		base2 = talloc_strndup(mem_ctx, pattern, p-pattern);
+	}
+	if (ext2 == NULL || base2 == NULL) {
+		return NULL;
+	}
+
+	base1 = pvfs_resolve_wildcard_component(mem_ctx, base1, base2);
+	ext1 = pvfs_resolve_wildcard_component(mem_ctx, ext1, ext2);
+	if (base1 == NULL || ext1 == NULL) {
+		return NULL;
+	}
+
+	if (*ext1 == 0) {
+		return base1;
+	}
+
+	return talloc_asprintf(mem_ctx, "%s.%s", base1, ext1);
+}
+
+/*
+  retry an rename after a sharing violation
+*/
+static void pvfs_retry_rename(struct pvfs_odb_retry *r,
+			      struct ntvfs_module_context *ntvfs,
+			      struct ntvfs_request *req,
+			      void *_io,
+			      void *private_data,
+			      enum pvfs_wait_notice reason)
+{
+	union smb_rename *io = talloc_get_type(_io, union smb_rename);
+	NTSTATUS status = NT_STATUS_INTERNAL_ERROR;
+
+	talloc_free(r);
+
+	switch (reason) {
+	case PVFS_WAIT_CANCEL:
+/*TODO*/
+		status = NT_STATUS_CANCELLED;
+		break;
+	case PVFS_WAIT_TIMEOUT:
+		/* if it timed out, then give the failure
+		   immediately */
+/*TODO*/
+		status = NT_STATUS_SHARING_VIOLATION;
+		break;
+	case PVFS_WAIT_EVENT:
+
+		/* try the open again, which could trigger another retry setup
+		   if it wants to, so we have to unmark the async flag so we
+		   will know if it does a second async reply */
+		req->async_states->state &= ~NTVFS_ASYNC_STATE_ASYNC;
+
+		status = pvfs_rename(ntvfs, req, io);
+		if (req->async_states->state & NTVFS_ASYNC_STATE_ASYNC) {
+			/* the 2nd try also replied async, so we don't send
+			   the reply yet */
+			return;
+		}
+
+		/* re-mark it async, just in case someone up the chain does
+		   paranoid checking */
+		req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
+		break;
+	}
+
+	/* send the reply up the chain */
+	req->async_states->status = status;
+	req->async_states->send_fn(req);
+}
+
+/*
+  setup for a rename retry after a sharing violation
+  or a non granted oplock
+*/
+static NTSTATUS pvfs_rename_setup_retry(struct ntvfs_module_context *ntvfs,
+					struct ntvfs_request *req,
+					union smb_rename *io,
+					struct odb_lock *lck,
+					NTSTATUS status)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct timeval end_time;
+
+	if (NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION)) {
+		end_time = timeval_add(&req->statistics.request_time,
+				       0, pvfs->sharing_violation_delay);
+	} else if (NT_STATUS_EQUAL(status, NT_STATUS_OPLOCK_NOT_GRANTED)) {
+		end_time = timeval_add(&req->statistics.request_time,
+				       pvfs->oplock_break_timeout, 0);
+	} else {
+		return NT_STATUS_INTERNAL_ERROR;
+	}
+
+	return pvfs_odb_retry_setup(ntvfs, req, lck, end_time, io, NULL,
+				    pvfs_retry_rename);
+}
+
+/*
+  rename one file from a wildcard set
+*/
+static NTSTATUS pvfs_rename_one(struct pvfs_state *pvfs, 
+				struct ntvfs_request *req, 
+				const char *dir_path,
+				const char *fname1,
+				const char *fname2,
+				uint16_t attrib)
+{
+	struct pvfs_filename *name1, *name2;
+	TALLOC_CTX *mem_ctx = talloc_new(req);
+	struct odb_lock *lck = NULL;
+	NTSTATUS status;
+
+	/* resolve the wildcard pattern for this name */
+	fname2 = pvfs_resolve_wildcard(mem_ctx, fname1, fname2);
+	if (fname2 == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	/* get a pvfs_filename source object */
+	status = pvfs_resolve_partial(pvfs, mem_ctx, 
+				      dir_path, fname1,
+				      PVFS_RESOLVE_NO_OPENDB,
+				      &name1);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto failed;
+	}
+
+	/* make sure its matches the given attributes */
+	status = pvfs_match_attrib(pvfs, name1, attrib, 0);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto failed;
+	}
+
+	status = pvfs_can_rename(pvfs, req, name1, &lck);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(lck);
+		goto failed;
+	}
+
+	/* get a pvfs_filename dest object */
+	status = pvfs_resolve_partial(pvfs, mem_ctx, 
+				      dir_path, fname2,
+				      PVFS_RESOLVE_NO_OPENDB,
+				      &name2);
+	if (NT_STATUS_IS_OK(status)) {
+		status = pvfs_can_delete(pvfs, req, name2, NULL);
+		if (!NT_STATUS_IS_OK(status)) {
+			goto failed;
+		}
+	}
+
+	status = NT_STATUS_OK;
+
+	fname2 = talloc_asprintf(mem_ctx, "%s/%s", dir_path, fname2);
+	if (fname2 == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	status = pvfs_do_rename(pvfs, lck, name1, fname2);
+
+failed:
+	talloc_free(mem_ctx);
+	return status;
+}
+
+
+/*
+  rename a set of files with wildcards
+*/
+static NTSTATUS pvfs_rename_wildcard(struct pvfs_state *pvfs, 
+				     struct ntvfs_request *req, 
+				     union smb_rename *ren, 
+				     struct pvfs_filename *name1, 
+				     struct pvfs_filename *name2)
+{
+	struct pvfs_dir *dir;
+	NTSTATUS status;
+	off_t ofs = 0;
+	const char *fname, *fname2, *dir_path;
+	uint16_t attrib = ren->rename.in.attrib;
+	int total_renamed = 0;
+
+	/* get list of matching files */
+	status = pvfs_list_start(pvfs, name1, req, &dir);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	status = NT_STATUS_NO_SUCH_FILE;
+
+	dir_path = pvfs_list_unix_path(dir);
+
+	/* only allow wildcard renames within a directory */
+	if (strncmp(dir_path, name2->full_name, strlen(dir_path)) != 0 ||
+	    name2->full_name[strlen(dir_path)] != '/' ||
+	    strchr(name2->full_name + strlen(dir_path) + 1, '/')) {
+		DEBUG(3,(__location__ ": Invalid rename for %s -> %s\n",
+			 name1->original_name, name2->original_name));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	fname2 = talloc_strdup(name2, name2->full_name + strlen(dir_path) + 1);
+	if (fname2 == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	while ((fname = pvfs_list_next(dir, &ofs))) {
+		status = pvfs_rename_one(pvfs, req, 
+					 dir_path,
+					 fname, fname2, attrib);
+		if (NT_STATUS_IS_OK(status)) {
+			total_renamed++;
+		}
+	}
+
+	if (total_renamed == 0) {
+		return status;
+	}
+
+	return NT_STATUS_OK;
+}
+
+/*
+  rename a set of files - SMBmv interface
+*/
+static NTSTATUS pvfs_rename_mv(struct ntvfs_module_context *ntvfs,
+			       struct ntvfs_request *req, union smb_rename *ren)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	NTSTATUS status;
+	struct pvfs_filename *name1, *name2;
+	struct odb_lock *lck = NULL;
+
+	/* resolve the cifs name to a posix name */
+	status = pvfs_resolve_name(pvfs, req, ren->rename.in.pattern1, 
+				   PVFS_RESOLVE_WILDCARD, &name1);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	status = pvfs_resolve_name(pvfs, req, ren->rename.in.pattern2, 
+				   PVFS_RESOLVE_WILDCARD, &name2);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	if (name1->has_wildcard || name2->has_wildcard) {
+		return pvfs_rename_wildcard(pvfs, req, ren, name1, name2);
+	}
+
+	if (!name1->exists) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	if (strcmp(name1->full_name, name2->full_name) == 0) {
+		return NT_STATUS_OK;
+	}
+
+	if (name2->exists) {
+		return NT_STATUS_OBJECT_NAME_COLLISION;
+	}
+
+	status = pvfs_match_attrib(pvfs, name1, ren->rename.in.attrib, 0);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	status = pvfs_access_check_parent(pvfs, req, name2, SEC_DIR_ADD_FILE);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	status = pvfs_can_rename(pvfs, req, name1, &lck);
+	/*
+	 * on a sharing violation we need to retry when the file is closed by
+	 * the other user, or after 1 second
+	 * on a non granted oplock we need to retry when the file is closed by
+	 * the other user, or after 30 seconds
+	 */
+	if ((NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION) ||
+	     NT_STATUS_EQUAL(status, NT_STATUS_OPLOCK_NOT_GRANTED)) &&
+	    (req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return pvfs_rename_setup_retry(pvfs->ntvfs, req, ren, lck, status);
+	}
+
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	status = pvfs_do_rename(pvfs, lck, name1, name2->full_name);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+	
+	return NT_STATUS_OK;
+}
+
+
+/*
+  rename a stream
+*/
+static NTSTATUS pvfs_rename_stream(struct ntvfs_module_context *ntvfs,
+				   struct ntvfs_request *req, union smb_rename *ren,
+				   struct pvfs_filename *name1)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	NTSTATUS status;
+	struct odb_lock *lck = NULL;
+
+	if (name1->has_wildcard) {
+		DEBUG(3,(__location__ ": Invalid wildcard rename for %s\n",
+			 name1->original_name));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	if (ren->ntrename.in.new_name[0] != ':') {
+		DEBUG(3,(__location__ ": Invalid rename for %s\n",
+			 ren->ntrename.in.new_name));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	if (!name1->exists) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	if (ren->ntrename.in.flags != RENAME_FLAG_RENAME) {
+		DEBUG(3,(__location__ ": Invalid rename flags 0x%x for %s\n",
+			 ren->ntrename.in.flags, ren->ntrename.in.new_name));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	status = pvfs_can_rename(pvfs, req, name1, &lck);
+	/*
+	 * on a sharing violation we need to retry when the file is closed by
+	 * the other user, or after 1 second
+	 * on a non granted oplock we need to retry when the file is closed by
+	 * the other user, or after 30 seconds
+	 */
+	if ((NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION) ||
+	     NT_STATUS_EQUAL(status, NT_STATUS_OPLOCK_NOT_GRANTED)) &&
+	    (req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return pvfs_rename_setup_retry(pvfs->ntvfs, req, ren, lck, status);
+	}
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	status = pvfs_access_check_simple(pvfs, req, name1, SEC_FILE_WRITE_ATTRIBUTE);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	status = pvfs_stream_rename(pvfs, name1, -1, 
+				    ren->ntrename.in.new_name+1, 
+				    true);
+	NT_STATUS_NOT_OK_RETURN(status);
+	
+	return NT_STATUS_OK;
+}
+
+/*
+  rename a set of files - ntrename interface
+*/
+static NTSTATUS pvfs_rename_nt(struct ntvfs_module_context *ntvfs,
+			       struct ntvfs_request *req, union smb_rename *ren)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	NTSTATUS status;
+	struct pvfs_filename *name1, *name2;
+	struct odb_lock *lck = NULL;
+
+	switch (ren->ntrename.in.flags) {
+	case RENAME_FLAG_RENAME:
+	case RENAME_FLAG_HARD_LINK:
+	case RENAME_FLAG_COPY:
+	case RENAME_FLAG_MOVE_CLUSTER_INFORMATION:
+		break;
+	default:
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
+	/* resolve the cifs name to a posix name */
+	status = pvfs_resolve_name(pvfs, req, ren->ntrename.in.old_name, 
+				   PVFS_RESOLVE_WILDCARD | PVFS_RESOLVE_STREAMS, &name1);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	if (name1->stream_name) {
+		/* stream renames need to be handled separately */
+		return pvfs_rename_stream(ntvfs, req, ren, name1);
+	}
+
+	status = pvfs_resolve_name(pvfs, req, ren->ntrename.in.new_name, 
+				   PVFS_RESOLVE_WILDCARD, &name2);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	if (name1->has_wildcard || name2->has_wildcard) {
+		return NT_STATUS_OBJECT_PATH_SYNTAX_BAD;
+	}
+
+	if (!name1->exists) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	if (strcmp(name1->full_name, name2->full_name) == 0) {
+		return NT_STATUS_OK;
+	}
+
+	if (name2->exists) {
+		return NT_STATUS_OBJECT_NAME_COLLISION;
+	}
+
+	status = pvfs_match_attrib(pvfs, name1, ren->ntrename.in.attrib, 0);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	status = pvfs_can_rename(pvfs, req, name1, &lck);
+	/*
+	 * on a sharing violation we need to retry when the file is closed by
+	 * the other user, or after 1 second
+	 * on a non granted oplock we need to retry when the file is closed by
+	 * the other user, or after 30 seconds
+	 */
+	if ((NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION) ||
+	     NT_STATUS_EQUAL(status, NT_STATUS_OPLOCK_NOT_GRANTED)) &&
+	    (req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return pvfs_rename_setup_retry(pvfs->ntvfs, req, ren, lck, status);
+	}
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	switch (ren->ntrename.in.flags) {
+	case RENAME_FLAG_RENAME:
+		status = pvfs_access_check_parent(pvfs, req, name2, SEC_DIR_ADD_FILE);
+		NT_STATUS_NOT_OK_RETURN(status);
+		status = pvfs_do_rename(pvfs, lck, name1, name2->full_name);
+		NT_STATUS_NOT_OK_RETURN(status);
+		break;
+
+	case RENAME_FLAG_HARD_LINK:
+		status = pvfs_access_check_parent(pvfs, req, name2, SEC_DIR_ADD_FILE);
+		NT_STATUS_NOT_OK_RETURN(status);
+		if (link(name1->full_name, name2->full_name) == -1) {
+			return pvfs_map_errno(pvfs, errno);
+		}
+		break;
+
+	case RENAME_FLAG_COPY:
+		status = pvfs_access_check_parent(pvfs, req, name2, SEC_DIR_ADD_FILE);
+		NT_STATUS_NOT_OK_RETURN(status);
+		return pvfs_copy_file(pvfs, name1, name2, name1->allow_override && name2->allow_override);
+
+	case RENAME_FLAG_MOVE_CLUSTER_INFORMATION:
+		DEBUG(3,(__location__ ": Invalid rename cluster for %s\n",
+			 name1->original_name));
+		return NT_STATUS_INVALID_PARAMETER;
+
+	default:
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
+	
+	return NT_STATUS_OK;
+}
+
+/*
+  rename a set of files - ntrename interface
+*/
+NTSTATUS pvfs_rename(struct ntvfs_module_context *ntvfs,
+		     struct ntvfs_request *req, union smb_rename *ren)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct pvfs_file *f;
+
+	switch (ren->generic.level) {
+	case RAW_RENAME_RENAME:
+		return pvfs_rename_mv(ntvfs, req, ren);
+
+	case RAW_RENAME_NTRENAME:
+		return pvfs_rename_nt(ntvfs, req, ren);
+
+	case RAW_RENAME_NTTRANS:
+		f = pvfs_find_fd(pvfs, req, ren->nttrans.in.file.ntvfs);
+		if (!f) {
+			return NT_STATUS_INVALID_HANDLE;
+		}
+
+		/* wk23 ignores the request */
+		return NT_STATUS_OK;
+
+	default:
+		break;
+	}
+
+	return NT_STATUS_INVALID_LEVEL;
+}
+
diff --git a/source4/ntvfs/posix/pvfs_resolve.c b/source4/ntvfs/posix/pvfs_resolve.c
new file mode 100644
index 0000000..fbd8c7d
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_resolve.c
@@ -0,0 +1,826 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - filename resolution
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+  this is the core code for converting a filename from the format as
+  given by a client to a posix filename, including any case-matching
+  required, and checks for legal characters
+*/
+
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "system/dir.h"
+#include "param/param.h"
+
+/**
+  compare two filename components. This is where the name mangling hook will go
+*/
+static int component_compare(struct pvfs_state *pvfs, const char *comp, const char *name)
+{
+	int ret;
+
+	ret = strcasecmp_m(comp, name);
+
+	if (ret != 0) {
+		char *shortname = pvfs_short_name_component(pvfs, name);
+		if (shortname) {
+			ret = strcasecmp_m(comp, shortname);
+			talloc_free(shortname);
+		}
+	}
+
+	return ret;
+}
+
+/*
+  search for a filename in a case insensitive fashion
+
+  TODO: add a cache for previously resolved case-insensitive names
+  TODO: add mangled name support
+*/
+static NTSTATUS pvfs_case_search(struct pvfs_state *pvfs,
+				 struct pvfs_filename *name,
+				 unsigned int flags)
+{
+	/* break into a series of components */
+	size_t num_components;
+	char **components;
+	char *p, *partial_name;
+	size_t i;
+
+	/* break up the full name into pathname components */
+	num_components=2;
+	p = name->full_name + strlen(pvfs->base_directory) + 1;
+
+	for (;*p;p++) {
+		if (*p == '/') {
+			num_components++;
+		}
+	}
+
+	components = talloc_array(name, char *, num_components);
+	p = name->full_name + strlen(pvfs->base_directory);
+	*p++ = 0;
+
+	components[0] = name->full_name;
+
+	for (i=1;i<num_components;i++) {
+		components[i] = p;
+		p = strchr(p, '/');
+		if (p) *p++ = 0;
+		if (pvfs_is_reserved_name(pvfs, components[i])) {
+			return NT_STATUS_ACCESS_DENIED;
+		}
+	}
+
+	partial_name = talloc_strdup(name, components[0]);
+	if (!partial_name) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	/* for each component, check if it exists as-is, and if not then
+	   do a directory scan */
+	for (i=1;i<num_components;i++) {
+		char *test_name;
+		DIR *dir;
+		struct dirent *de;
+		char *long_component;
+
+		/* possibly remap from the short name cache */
+		long_component = pvfs_mangled_lookup(pvfs, name, components[i]);
+		if (long_component) {
+			components[i] = long_component;
+		}
+
+		test_name = talloc_asprintf(name, "%s/%s", partial_name, components[i]);
+		if (!test_name) {
+			return NT_STATUS_NO_MEMORY;
+		}
+
+		/* check if this component exists as-is */
+		if (stat(test_name, &name->st) == 0) {
+			if (i<num_components-1 && !S_ISDIR(name->st.st_mode)) {
+				return NT_STATUS_OBJECT_PATH_NOT_FOUND;
+			}
+			talloc_free(partial_name);
+			partial_name = test_name;
+			if (i == num_components - 1) {
+				name->exists = true;
+			}
+			continue;
+		}
+
+		/* the filesystem might be case insensitive, in which
+		   case a search is pointless unless the name is
+		   mangled */
+		if ((pvfs->flags & PVFS_FLAG_CI_FILESYSTEM) &&
+		    !pvfs_is_mangled_component(pvfs, components[i])) {
+			if (i < num_components-1) {
+				return NT_STATUS_OBJECT_PATH_NOT_FOUND;
+			}
+			partial_name = test_name;
+			continue;
+		}
+		
+		dir = opendir(partial_name);
+		if (!dir) {
+			return pvfs_map_errno(pvfs, errno);
+		}
+
+		while ((de = readdir(dir))) {
+			if (component_compare(pvfs, components[i], de->d_name) == 0) {
+				break;
+			}
+		}
+
+		if (!de) {
+			if (i < num_components-1) {
+				closedir(dir);
+				return NT_STATUS_OBJECT_PATH_NOT_FOUND;
+			}
+		} else {
+			components[i] = talloc_strdup(name, de->d_name);
+		}
+		test_name = talloc_asprintf(name, "%s/%s", partial_name, components[i]);
+		talloc_free(partial_name);
+		partial_name = test_name;
+
+		closedir(dir);
+	}
+
+	if (!name->exists) {
+		if (stat(partial_name, &name->st) == 0) {
+			name->exists = true;
+		}
+	}
+
+	talloc_free(name->full_name);
+	name->full_name = partial_name;
+
+	if (name->exists) {
+		return pvfs_fill_dos_info(pvfs, name, flags, -1);
+	}
+
+	return NT_STATUS_OK;
+}
+
+/*
+  parse a alternate data stream name
+*/
+static NTSTATUS parse_stream_name(struct pvfs_filename *name,
+				  const char *s)
+{
+	char *p, *stream_name;
+	if (s[1] == '\0') {
+		return NT_STATUS_OBJECT_NAME_INVALID;
+	}
+	name->stream_name = stream_name = talloc_strdup(name, s+1);
+	if (name->stream_name == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	p = stream_name;
+
+	while (*p) {
+		size_t c_size;
+		codepoint_t c = next_codepoint(p, &c_size);
+
+		switch (c) {
+		case '/':
+		case '\\':
+			return NT_STATUS_OBJECT_NAME_INVALID;
+		case ':':
+			*p= 0;
+			p++;
+			if (*p == '\0') {
+				return NT_STATUS_OBJECT_NAME_INVALID;
+			}
+			if (strcasecmp_m(p, "$DATA") != 0) {
+				if (strchr_m(p, ':')) {
+					return NT_STATUS_OBJECT_NAME_INVALID;
+				}
+				return NT_STATUS_INVALID_PARAMETER;
+			}
+			c_size = 0;
+			p--;
+			break;
+		}
+
+		p += c_size;
+	}
+
+	if (strcmp(name->stream_name, "") == 0) {
+		/*
+		 * we don't set stream_name to NULL, here
+		 * as this would be wrong for directories
+		 *
+		 * pvfs_fill_dos_info() will set it to NULL
+		 * if it's not a directory.
+		 */
+		name->stream_id = 0;
+	} else {
+		name->stream_id = pvfs_name_hash(name->stream_name, 
+						 strlen(name->stream_name));
+	}
+						 
+	return NT_STATUS_OK;	
+}
+
+
+/*
+  convert a CIFS pathname to a unix pathname. Note that this does NOT
+  take into account case insensitivity, and in fact does not access
+  the filesystem at all. It is merely a reformatting and charset
+  checking routine.
+
+  errors are returned if the filename is illegal given the flags
+*/
+static NTSTATUS pvfs_unix_path(struct pvfs_state *pvfs, const char *cifs_name,
+			       unsigned int flags, struct pvfs_filename *name)
+{
+	char *ret, *p, *p_start;
+	NTSTATUS status;
+
+	name->original_name = talloc_strdup(name, cifs_name);
+
+	/* remove any :$DATA */
+	p = strrchr(name->original_name, ':');
+	if (p && strcasecmp_m(p, ":$DATA") == 0) {
+		if (p > name->original_name && p[-1] == ':') {
+			p--;
+		}
+		*p = 0;
+	}
+
+	name->stream_name = NULL;
+	name->stream_id = 0;
+	name->has_wildcard = false;
+
+	while (*cifs_name == '\\') {
+		cifs_name++;
+	}
+
+	if (*cifs_name == 0) {
+		name->full_name = talloc_asprintf(name, "%s/.", pvfs->base_directory);
+		if (name->full_name == NULL) {
+			return NT_STATUS_NO_MEMORY;
+		}
+		return NT_STATUS_OK;
+	}
+
+	ret = talloc_asprintf(name, "%s/%s", pvfs->base_directory, cifs_name);
+	if (ret == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	p = ret + strlen(pvfs->base_directory) + 1;
+
+	/* now do an in-place conversion of '\' to '/', checking
+	   for legal characters */
+	p_start = p;
+
+	while (*p) {
+		size_t c_size;
+		codepoint_t c = next_codepoint(p, &c_size);
+
+		if (c <= 0x1F) {
+			return NT_STATUS_OBJECT_NAME_INVALID;
+		}
+
+		switch (c) {
+		case '\\':
+			if (name->has_wildcard) {
+				/* wildcards are only allowed in the last part
+				   of a name */
+				return NT_STATUS_OBJECT_NAME_INVALID;
+			}
+			if (p > p_start && (p[1] == '\\' || p[1] == '\0')) {
+				/* see if it is definitely a "\\" or
+				 * a trailing "\". If it is then fail here,
+				 * and let the next layer up try again after
+				 * pvfs_reduce_name() if it wants to. This is
+				 * much more efficient on average than always
+				 * scanning for these separately
+				 */
+				return NT_STATUS_OBJECT_PATH_SYNTAX_BAD;
+			} else {
+				*p = '/';
+			}
+			break;
+		case ':':
+			if (!(flags & PVFS_RESOLVE_STREAMS)) {
+				return NT_STATUS_OBJECT_NAME_INVALID;
+			}
+			if (name->has_wildcard) {
+				return NT_STATUS_OBJECT_NAME_INVALID;
+			}
+			status = parse_stream_name(name, p);
+			if (!NT_STATUS_IS_OK(status)) {
+				return status;
+			}
+			*p-- = 0;
+			break;
+		case '*':
+		case '>':
+		case '<':
+		case '?':
+		case '"':
+			if (!(flags & PVFS_RESOLVE_WILDCARD)) {
+				return NT_STATUS_OBJECT_NAME_INVALID;
+			}
+			name->has_wildcard = true;
+			break;
+		case '/':
+		case '|':
+			return NT_STATUS_OBJECT_NAME_INVALID;
+		case '.':
+			/* see if it is definitely a .. or
+			   . component. If it is then fail here, and
+			   let the next layer up try again after
+			   pvfs_reduce_name() if it wants to. This is
+			   much more efficient on average than always
+			   scanning for these separately */
+			if (p[1] == '.' && 
+			    (p[2] == 0 || p[2] == '\\') &&
+			    (p == p_start || p[-1] == '/')) {
+				return NT_STATUS_OBJECT_PATH_SYNTAX_BAD;
+			}
+			if ((p[1] == 0 || p[1] == '\\') &&
+			    (p == p_start || p[-1] == '/')) {
+				return NT_STATUS_OBJECT_PATH_SYNTAX_BAD;
+			}
+			break;
+		}
+
+		p += c_size;
+	}
+
+	name->full_name = ret;
+
+	return NT_STATUS_OK;
+}
+
+
+/*
+  reduce a name that contains .. components or repeated \ separators
+  return NULL if it can't be reduced
+*/
+static NTSTATUS pvfs_reduce_name(TALLOC_CTX *mem_ctx, 
+				 const char **fname, unsigned int flags)
+{
+	codepoint_t c;
+	size_t c_size, len;
+	size_t i, num_components, err_count;
+	char **components;
+	char *p, *s, *ret;
+
+	s = talloc_strdup(mem_ctx, *fname);
+	if (s == NULL) return NT_STATUS_NO_MEMORY;
+
+	for (num_components=1, p=s; *p; p += c_size) {
+		c = next_codepoint(p, &c_size);
+		if (c == '\\') num_components++;
+	}
+
+	components = talloc_array(s, char *, num_components+1);
+	if (components == NULL) {
+		talloc_free(s);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	components[0] = s;
+	for (i=0, p=s; *p; p += c_size) {
+		c = next_codepoint(p, &c_size);
+		if (c == '\\') {
+			*p = 0;
+			components[++i] = p+1;
+		}
+	}
+	components[i+1] = NULL;
+
+	/*
+	  rather bizarre!
+
+	  '.' components are not allowed, but the rules for what error
+	  code to give don't seem to make sense. This is a close
+	  approximation.
+	*/
+	for (err_count=i=0;components[i];i++) {
+		if (strcmp(components[i], "") == 0) {
+			continue;
+		}
+		if (ISDOT(components[i]) || err_count) {
+			err_count++;
+		}
+	}
+	if (err_count > 0) {
+		if (flags & PVFS_RESOLVE_WILDCARD) err_count--;
+
+		if (err_count==1) {
+			return NT_STATUS_OBJECT_NAME_INVALID;
+		} else {
+			return NT_STATUS_OBJECT_PATH_NOT_FOUND;
+		}
+	}
+
+	/* remove any null components */
+	for (i=0;components[i];i++) {
+		if (strcmp(components[i], "") == 0) {
+			memmove(&components[i], &components[i+1], 
+				sizeof(char *)*(num_components-i));
+			i--;
+			continue;
+		}
+		if (ISDOTDOT(components[i])) {
+			if (i < 1) return NT_STATUS_OBJECT_PATH_SYNTAX_BAD;
+			memmove(&components[i-1], &components[i+1], 
+				sizeof(char *)*(num_components-i));
+			i -= 2;
+			continue;
+		}
+	}
+
+	if (components[0] == NULL) {
+		talloc_free(s);
+		*fname = talloc_strdup(mem_ctx, "\\");
+		return NT_STATUS_OK;
+	}
+
+	for (len=i=0;components[i];i++) {
+		len += strlen(components[i]) + 1;
+	}
+
+	/* rebuild the name */
+	ret = talloc_array(mem_ctx, char, len+1);
+	if (ret == NULL) {
+		talloc_free(s);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	for (len=0,i=0;components[i];i++) {
+		size_t len1 = strlen(components[i]);
+		ret[len] = '\\';
+		memcpy(ret+len+1, components[i], len1);
+		len += len1 + 1;
+	}	
+	ret[len] = 0;
+
+	talloc_set_name_const(ret, ret);
+
+	talloc_free(s);
+
+	*fname = ret;
+	
+	return NT_STATUS_OK;
+}
+
+
+/*
+  resolve a name from relative client format to a struct pvfs_filename
+  the memory for the filename is made as a talloc child of 'name'
+
+  flags include:
+     PVFS_RESOLVE_NO_WILDCARD = wildcards are considered illegal characters
+     PVFS_RESOLVE_STREAMS     = stream names are allowed
+
+     TODO: ../ collapsing, and outside share checking
+*/
+NTSTATUS pvfs_resolve_name(struct pvfs_state *pvfs, 
+			   struct ntvfs_request *req,
+			   const char *cifs_name,
+			   unsigned int flags, struct pvfs_filename **name)
+{
+	NTSTATUS status;
+
+	*name = talloc(req, struct pvfs_filename);
+	if (*name == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	(*name)->exists = false;
+	(*name)->stream_exists = false;
+	(*name)->allow_override = false;
+
+	if (!(pvfs->fs_attribs & FS_ATTR_NAMED_STREAMS)) {
+		flags &= ~PVFS_RESOLVE_STREAMS;
+	}
+
+	/* SMB2 doesn't allow a leading slash */
+	if (req->ctx->protocol >= PROTOCOL_SMB2_02 &&
+	    *cifs_name == '\\') {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	/* do the basic conversion to a unix formatted path,
+	   also checking for allowable characters */
+	status = pvfs_unix_path(pvfs, cifs_name, flags, *name);
+
+	if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_PATH_SYNTAX_BAD)) {
+		/* it might contain .. components which need to be reduced */
+		status = pvfs_reduce_name(*name, &cifs_name, flags);
+		if (!NT_STATUS_IS_OK(status)) {
+			return status;
+		}
+		status = pvfs_unix_path(pvfs, cifs_name, flags, *name);
+	}
+
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	/* if it has a wildcard then no point doing a stat() of the
+	   full name. Instead We need check if the directory exists 
+	 */
+	if ((*name)->has_wildcard) {
+		const char *p;
+		char *dir_name, *saved_name;
+		p = strrchr((*name)->full_name, '/');
+		if (p == NULL) {
+			/* root directory wildcard is OK */
+			return NT_STATUS_OK;
+		}
+		dir_name = talloc_strndup(*name, (*name)->full_name, (p-(*name)->full_name));
+		if (stat(dir_name, &(*name)->st) == 0) {
+			talloc_free(dir_name);
+			return NT_STATUS_OK;
+		}
+		/* we need to search for a matching name */
+		saved_name = (*name)->full_name;
+		(*name)->full_name = dir_name;
+		status = pvfs_case_search(pvfs, *name, flags);
+		if (!NT_STATUS_IS_OK(status)) {
+			/* the directory doesn't exist */
+			(*name)->full_name = saved_name;
+			return status;
+		}
+		/* it does exist, but might need a case change */
+		if (dir_name != (*name)->full_name) {
+			(*name)->full_name = talloc_asprintf(*name, "%s%s",
+							     (*name)->full_name, p);
+			NT_STATUS_HAVE_NO_MEMORY((*name)->full_name);
+		} else {
+			(*name)->full_name = saved_name;
+			talloc_free(dir_name);
+		}
+		return NT_STATUS_OK;
+	}
+
+	/* if we can stat() the full name now then we are done */
+	if (stat((*name)->full_name, &(*name)->st) == 0) {
+		(*name)->exists = true;
+		return pvfs_fill_dos_info(pvfs, *name, flags, -1);
+	}
+
+	/* search for a matching filename */
+	status = pvfs_case_search(pvfs, *name, flags);
+
+	return status;
+}
+
+
+/*
+  do a partial resolve, returning a pvfs_filename structure given a
+  base path and a relative component. It is an error if the file does
+  not exist. No case-insensitive matching is done.
+
+  this is used in places like directory searching where we need a pvfs_filename
+  to pass to a function, but already know the unix base directory and component
+*/
+NTSTATUS pvfs_resolve_partial(struct pvfs_state *pvfs, TALLOC_CTX *mem_ctx,
+			      const char *unix_dir, const char *fname,
+			      unsigned int flags, struct pvfs_filename **name)
+{
+	NTSTATUS status;
+
+	*name = talloc(mem_ctx, struct pvfs_filename);
+	if (*name == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	(*name)->full_name = talloc_asprintf(*name, "%s/%s", unix_dir, fname);
+	if ((*name)->full_name == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	if (stat((*name)->full_name, &(*name)->st) == -1) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	(*name)->exists = true;
+	(*name)->stream_exists = true;
+	(*name)->has_wildcard = false;
+	(*name)->original_name = talloc_strdup(*name, fname);
+	(*name)->stream_name = NULL;
+	(*name)->stream_id = 0;
+	(*name)->allow_override = false;
+
+	status = pvfs_fill_dos_info(pvfs, *name, flags, -1);
+
+	return status;
+}
+
+
+/*
+  fill in the pvfs_filename info for an open file, given the current
+  info for a (possibly) non-open file. This is used by places that need
+  to update the pvfs_filename stat information, and by pvfs_open()
+*/
+NTSTATUS pvfs_resolve_name_fd(struct pvfs_state *pvfs, int fd,
+			      struct pvfs_filename *name, unsigned int flags)
+{
+	dev_t device = (dev_t)0;
+	ino_t inode = 0;
+
+	if (name->exists) {
+		device = name->st.st_dev;
+		inode = name->st.st_ino;
+	}
+
+	if (fd == -1) {
+		if (stat(name->full_name, &name->st) == -1) {
+			return NT_STATUS_INVALID_HANDLE;
+		}
+	} else {
+		if (fstat(fd, &name->st) == -1) {
+			return NT_STATUS_INVALID_HANDLE;
+		}
+	}
+
+	if (name->exists &&
+	    (device != name->st.st_dev || inode != name->st.st_ino)) {
+		/* the file we are looking at has changed! this could
+		 be someone trying to exploit a race
+		 condition. Certainly we don't want to continue
+		 operating on this file */
+		DEBUG(0,("pvfs: WARNING: file '%s' changed during resolve - failing\n",
+			 name->full_name));
+		return NT_STATUS_UNEXPECTED_IO_ERROR;
+	}
+
+	name->exists = true;
+	
+	return pvfs_fill_dos_info(pvfs, name, flags, fd);
+}
+
+/*
+  fill in the pvfs_filename info for an open file, given the current
+  info for a (possibly) non-open file. This is used by places that need
+  to update the pvfs_filename stat information, and the path
+  after a possible rename on a different handle.
+*/
+NTSTATUS pvfs_resolve_name_handle(struct pvfs_state *pvfs,
+				  struct pvfs_file_handle *h)
+{
+	NTSTATUS status;
+
+	if (h->have_opendb_entry) {
+		struct odb_lock *lck;
+		const char *name = NULL;
+
+		lck = odb_lock(h, h->pvfs->odb_context, &h->odb_locking_key);
+		if (lck == NULL) {
+			DEBUG(0,("%s: failed to lock file '%s' in opendb\n",
+				 __FUNCTION__, h->name->full_name));
+			/* we were supposed to do a blocking lock, so something
+			   is badly wrong! */
+			return NT_STATUS_INTERNAL_DB_CORRUPTION;
+		}
+
+		status = odb_get_path(lck, &name);
+		if (NT_STATUS_IS_OK(status)) {
+			/*
+			 * This relies on the fact that
+			 * renames of open files are only
+			 * allowed by setpathinfo() and setfileinfo()
+			 * and there're only renames within the same
+			 * directory supported
+			 */
+			if (strcmp(h->name->full_name, name) != 0) {
+				const char *orig_dir;
+				const char *new_file;
+				char *new_orig;
+				char *delim;
+				char *full_name = discard_const_p(char, name);
+
+				delim = strrchr(name, '/');
+				if (!delim) {
+					talloc_free(lck);
+					return NT_STATUS_INTERNAL_ERROR;
+				}
+
+				new_file = delim + 1;
+				delim = strrchr(h->name->original_name, '\\');
+				if (delim) {
+					delim[0] = '\0';
+					orig_dir = h->name->original_name;
+					new_orig = talloc_asprintf(h->name, "%s\\%s",
+								   orig_dir, new_file);
+					if (!new_orig) {
+						talloc_free(lck);
+						return NT_STATUS_NO_MEMORY;
+					}
+				} else {
+					new_orig = talloc_strdup(h->name, new_file);
+					if (!new_orig) {
+						talloc_free(lck);
+						return NT_STATUS_NO_MEMORY;
+					}
+				}
+
+				talloc_free(h->name->original_name);
+				talloc_free(h->name->full_name);
+				h->name->full_name = talloc_steal(h->name, full_name);
+				h->name->original_name = new_orig;
+			}
+		}
+
+		talloc_free(lck);
+	}
+
+	/*
+	 * TODO: pass PVFS_RESOLVE_NO_OPENDB and get
+	 *       the write time from odb_lock() above.
+	 */
+	status = pvfs_resolve_name_fd(pvfs, h->fd, h->name, 0);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	if (!null_nttime(h->write_time.close_time)) {
+		h->name->dos.write_time = h->write_time.close_time;
+	}
+
+	return NT_STATUS_OK;
+}
+
+
+/*
+  resolve the parent of a given name
+*/
+NTSTATUS pvfs_resolve_parent(struct pvfs_state *pvfs, TALLOC_CTX *mem_ctx,
+			     const struct pvfs_filename *child,
+			     struct pvfs_filename **name)
+{
+	NTSTATUS status;
+	char *p;
+
+	*name = talloc(mem_ctx, struct pvfs_filename);
+	if (*name == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	(*name)->full_name = talloc_strdup(*name, child->full_name);
+	if ((*name)->full_name == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	p = strrchr_m((*name)->full_name, '/');
+	if (p == NULL) {
+		return NT_STATUS_OBJECT_PATH_SYNTAX_BAD;
+	}
+
+	/* this handles the root directory */
+	if (p == (*name)->full_name) {
+		p[1] = 0;
+	} else {
+		p[0] = 0;
+	}
+
+	if (stat((*name)->full_name, &(*name)->st) == -1) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	(*name)->exists = true;
+	(*name)->stream_exists = true;
+	(*name)->has_wildcard = false;
+	/* we can't get the correct 'original_name', but for the purposes
+	   of this call this is close enough */
+	(*name)->original_name = talloc_strdup(*name, child->original_name);
+	if ((*name)->original_name == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	(*name)->stream_name = NULL;
+	(*name)->stream_id = 0;
+	(*name)->allow_override = false;
+
+	status = pvfs_fill_dos_info(pvfs, *name, PVFS_RESOLVE_NO_OPENDB, -1);
+
+	return status;
+}
diff --git a/source4/ntvfs/posix/pvfs_search.c b/source4/ntvfs/posix/pvfs_search.c
new file mode 100644
index 0000000..f352a6a
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_search.c
@@ -0,0 +1,865 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - directory search functions
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "system/time.h"
+#include "librpc/gen_ndr/security.h"
+#include "samba/service_stream.h"
+#include "lib/events/events.h"
+#include "../lib/util/dlinklist.h"
+#include "lib/util/idtree.h"
+
+/* place a reasonable limit on old-style searches as clients tend to
+   not send search close requests */
+#define MAX_OLD_SEARCHES 2000
+#define MAX_SEARCH_HANDLES (UINT16_MAX - 1)
+#define INVALID_SEARCH_HANDLE UINT16_MAX
+
+/*
+  destroy an open search
+*/
+static int pvfs_search_destructor(struct pvfs_search_state *search)
+{
+	DLIST_REMOVE(search->pvfs->search.list, search);
+	idr_remove(search->pvfs->search.idtree, search->handle);
+	return 0;
+}
+
+/*
+  called when a search timer goes off
+*/
+static void pvfs_search_timer(struct tevent_context *ev, struct tevent_timer *te, 
+				      struct timeval t, void *ptr)
+{
+	struct pvfs_search_state *search = talloc_get_type(ptr, struct pvfs_search_state);
+	talloc_free(search);
+}
+
+/*
+  setup a timer to destroy a open search after a inactivity period
+*/
+static void pvfs_search_setup_timer(struct pvfs_search_state *search)
+{
+	struct tevent_context *ev = search->pvfs->ntvfs->ctx->event_ctx;
+	if (search->handle == INVALID_SEARCH_HANDLE) return;
+	talloc_free(search->te);
+	search->te = tevent_add_timer(ev, search,
+				     timeval_current_ofs(search->pvfs->search.inactivity_time, 0), 
+				     pvfs_search_timer, search);
+}
+
+/*
+  fill in a single search result for a given info level
+*/
+static NTSTATUS fill_search_info(struct pvfs_state *pvfs,
+				 enum smb_search_data_level level,
+				 const char *unix_path,
+				 const char *fname, 
+				 struct pvfs_search_state *search,
+				 off_t dir_offset,
+				 union smb_search_data *file)
+{
+	struct pvfs_filename *name;
+	NTSTATUS status;
+	const char *shortname;
+	uint32_t dir_index = (uint32_t)dir_offset; /* truncated - see the code 
+						      in pvfs_list_seek_ofs() for 
+						      how we cope with this */
+
+	status = pvfs_resolve_partial(pvfs, file, unix_path, fname, 0, &name);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	status = pvfs_match_attrib(pvfs, name, search->search_attrib, search->must_attrib);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	switch (level) {
+	case RAW_SEARCH_DATA_SEARCH:
+		shortname = pvfs_short_name(pvfs, name, name);
+		file->search.attrib           = name->dos.attrib;
+		file->search.write_time       = nt_time_to_unix(name->dos.write_time);
+		file->search.size             = name->st.st_size;
+		file->search.name             = shortname;
+		file->search.id.reserved      = search->handle >> 8;
+		memset(file->search.id.name, ' ', sizeof(file->search.id.name));
+		memcpy(file->search.id.name, shortname, 
+		       MIN(strlen(shortname)+1, sizeof(file->search.id.name)));
+		file->search.id.handle        = search->handle & 0xFF;
+		file->search.id.server_cookie = dir_index;
+		file->search.id.client_cookie = 0;
+		return NT_STATUS_OK;
+
+	case RAW_SEARCH_DATA_STANDARD:
+		file->standard.resume_key   = dir_index;
+		file->standard.create_time  = nt_time_to_unix(name->dos.create_time);
+		file->standard.access_time  = nt_time_to_unix(name->dos.access_time);
+		file->standard.write_time   = nt_time_to_unix(name->dos.write_time);
+		file->standard.size         = name->st.st_size;
+		file->standard.alloc_size   = name->dos.alloc_size;
+		file->standard.attrib       = name->dos.attrib;
+		file->standard.name.s       = fname;
+		return NT_STATUS_OK;
+
+	case RAW_SEARCH_DATA_EA_SIZE:
+		file->ea_size.resume_key   = dir_index;
+		file->ea_size.create_time  = nt_time_to_unix(name->dos.create_time);
+		file->ea_size.access_time  = nt_time_to_unix(name->dos.access_time);
+		file->ea_size.write_time   = nt_time_to_unix(name->dos.write_time);
+		file->ea_size.size         = name->st.st_size;
+		file->ea_size.alloc_size   = name->dos.alloc_size;
+		file->ea_size.attrib       = name->dos.attrib;
+		file->ea_size.ea_size      = name->dos.ea_size;
+		file->ea_size.name.s       = fname;
+		return NT_STATUS_OK;
+
+	case RAW_SEARCH_DATA_EA_LIST:
+		file->ea_list.resume_key   = dir_index;
+		file->ea_list.create_time  = nt_time_to_unix(name->dos.create_time);
+		file->ea_list.access_time  = nt_time_to_unix(name->dos.access_time);
+		file->ea_list.write_time   = nt_time_to_unix(name->dos.write_time);
+		file->ea_list.size         = name->st.st_size;
+		file->ea_list.alloc_size   = name->dos.alloc_size;
+		file->ea_list.attrib       = name->dos.attrib;
+		file->ea_list.name.s       = fname;
+		return pvfs_query_ea_list(pvfs, file, name, -1, 
+					  search->num_ea_names,
+					  search->ea_names,
+					  &file->ea_list.eas);
+
+	case RAW_SEARCH_DATA_DIRECTORY_INFO:
+		file->directory_info.file_index   = dir_index;
+		file->directory_info.create_time  = name->dos.create_time;
+		file->directory_info.access_time  = name->dos.access_time;
+		file->directory_info.write_time   = name->dos.write_time;
+		file->directory_info.change_time  = name->dos.change_time;
+		file->directory_info.size         = name->st.st_size;
+		file->directory_info.alloc_size   = name->dos.alloc_size;
+		file->directory_info.attrib       = name->dos.attrib;
+		file->directory_info.name.s       = fname;
+		return NT_STATUS_OK;
+
+	case RAW_SEARCH_DATA_FULL_DIRECTORY_INFO:
+		file->full_directory_info.file_index   = dir_index;
+		file->full_directory_info.create_time  = name->dos.create_time;
+		file->full_directory_info.access_time  = name->dos.access_time;
+		file->full_directory_info.write_time   = name->dos.write_time;
+		file->full_directory_info.change_time  = name->dos.change_time;
+		file->full_directory_info.size         = name->st.st_size;
+		file->full_directory_info.alloc_size   = name->dos.alloc_size;
+		file->full_directory_info.attrib       = name->dos.attrib;
+		file->full_directory_info.ea_size      = name->dos.ea_size;
+		file->full_directory_info.name.s       = fname;
+		return NT_STATUS_OK;
+
+	case RAW_SEARCH_DATA_NAME_INFO:
+		file->name_info.file_index   = dir_index;
+		file->name_info.name.s       = fname;
+		return NT_STATUS_OK;
+
+	case RAW_SEARCH_DATA_BOTH_DIRECTORY_INFO:
+		file->both_directory_info.file_index   = dir_index;
+		file->both_directory_info.create_time  = name->dos.create_time;
+		file->both_directory_info.access_time  = name->dos.access_time;
+		file->both_directory_info.write_time   = name->dos.write_time;
+		file->both_directory_info.change_time  = name->dos.change_time;
+		file->both_directory_info.size         = name->st.st_size;
+		file->both_directory_info.alloc_size   = name->dos.alloc_size;
+		file->both_directory_info.attrib       = name->dos.attrib;
+		file->both_directory_info.ea_size      = name->dos.ea_size;
+		file->both_directory_info.short_name.s = pvfs_short_name(pvfs, file, name);
+		file->both_directory_info.name.s       = fname;
+		return NT_STATUS_OK;
+
+	case RAW_SEARCH_DATA_ID_FULL_DIRECTORY_INFO:
+		file->id_full_directory_info.file_index   = dir_index;
+		file->id_full_directory_info.create_time  = name->dos.create_time;
+		file->id_full_directory_info.access_time  = name->dos.access_time;
+		file->id_full_directory_info.write_time   = name->dos.write_time;
+		file->id_full_directory_info.change_time  = name->dos.change_time;
+		file->id_full_directory_info.size         = name->st.st_size;
+		file->id_full_directory_info.alloc_size   = name->dos.alloc_size;
+		file->id_full_directory_info.attrib       = name->dos.attrib;
+		file->id_full_directory_info.ea_size      = name->dos.ea_size;
+		file->id_full_directory_info.file_id      = name->dos.file_id;
+		file->id_full_directory_info.name.s       = fname;
+		return NT_STATUS_OK;
+
+	case RAW_SEARCH_DATA_ID_BOTH_DIRECTORY_INFO:
+		file->id_both_directory_info.file_index   = dir_index;
+		file->id_both_directory_info.create_time  = name->dos.create_time;
+		file->id_both_directory_info.access_time  = name->dos.access_time;
+		file->id_both_directory_info.write_time   = name->dos.write_time;
+		file->id_both_directory_info.change_time  = name->dos.change_time;
+		file->id_both_directory_info.size         = name->st.st_size;
+		file->id_both_directory_info.alloc_size   = name->dos.alloc_size;
+		file->id_both_directory_info.attrib       = name->dos.attrib;
+		file->id_both_directory_info.ea_size      = name->dos.ea_size;
+		file->id_both_directory_info.file_id      = name->dos.file_id;
+		file->id_both_directory_info.short_name.s = pvfs_short_name(pvfs, file, name);
+		file->id_both_directory_info.name.s       = fname;
+		return NT_STATUS_OK;
+
+	case RAW_SEARCH_DATA_GENERIC:
+	case RAW_SEARCH_DATA_UNIX_INFO:
+	case RAW_SEARCH_DATA_UNIX_INFO2:
+		return NT_STATUS_INVALID_LEVEL;
+	}
+
+	return NT_STATUS_INVALID_LEVEL;
+}
+
+
+/*
+  the search fill loop
+*/
+static NTSTATUS pvfs_search_fill(struct pvfs_state *pvfs, TALLOC_CTX *mem_ctx, 
+				 unsigned int max_count,
+				 struct pvfs_search_state *search,
+				 enum smb_search_data_level level,
+				 unsigned int *reply_count,
+				 void *search_private, 
+				 bool (*callback)(void *, const union smb_search_data *))
+{
+	struct pvfs_dir *dir = search->dir;
+	NTSTATUS status;
+
+	*reply_count = 0;
+
+	if (max_count == 0) {
+		max_count = 1;
+	}
+
+	while ((*reply_count) < max_count) {
+		union smb_search_data *file;
+		const char *name;
+		off_t ofs = search->current_index;
+
+		name = pvfs_list_next(dir, &search->current_index);
+		if (name == NULL) break;
+
+		file = talloc(mem_ctx, union smb_search_data);
+		if (!file) {
+			return NT_STATUS_NO_MEMORY;
+		}
+
+		status = fill_search_info(pvfs, level, 
+					  pvfs_list_unix_path(dir), name, 
+					  search, search->current_index, file);
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(file);
+			continue;
+		}
+
+		if (!callback(search_private, file)) {
+			talloc_free(file);
+			search->current_index = ofs;
+			break;
+		}
+
+		(*reply_count)++;
+		talloc_free(file);
+	}
+
+	pvfs_search_setup_timer(search);
+
+	return NT_STATUS_OK;
+}
+
+/*
+  we've run out of search handles - cleanup those that the client forgot
+  to close
+*/
+static void pvfs_search_cleanup(struct pvfs_state *pvfs)
+{
+	int i;
+	time_t t = time_mono(NULL);
+
+	for (i=0;i<MAX_OLD_SEARCHES;i++) {
+		struct pvfs_search_state *search;
+		void *p = idr_find(pvfs->search.idtree, i);
+
+		if (p == NULL) return;
+
+		search = talloc_get_type(p, struct pvfs_search_state);
+		if (pvfs_list_eos(search->dir, search->current_index) &&
+		    search->last_used != 0 &&
+		    t > search->last_used + 30) {
+			/* its almost certainly been forgotten
+			 about */
+			talloc_free(search);
+		}
+	}
+}
+
+
+/* 
+   list files in a directory matching a wildcard pattern - old SMBsearch interface
+*/
+static NTSTATUS pvfs_search_first_old(struct ntvfs_module_context *ntvfs,
+				      struct ntvfs_request *req, union smb_search_first *io, 
+				      void *search_private, 
+				      bool (*callback)(void *, const union smb_search_data *))
+{
+	struct pvfs_dir *dir;
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct pvfs_search_state *search;
+	unsigned int reply_count;
+	uint16_t search_attrib;
+	const char *pattern;
+	NTSTATUS status;
+	struct pvfs_filename *name;
+	int id;
+
+	search_attrib = io->search_first.in.search_attrib;
+	pattern       = io->search_first.in.pattern;
+
+	/* resolve the cifs name to a posix name */
+	status = pvfs_resolve_name(pvfs, req, pattern, PVFS_RESOLVE_WILDCARD, &name);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	if (!name->has_wildcard && !name->exists) {
+		return STATUS_NO_MORE_FILES;
+	}
+
+	status = pvfs_access_check_parent(pvfs, req, name, SEC_DIR_TRAVERSE | SEC_DIR_LIST);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	/* we initially make search a child of the request, then if we
+	   need to keep it long term we steal it for the private
+	   structure */
+	search = talloc(req, struct pvfs_search_state);
+	if (!search) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	/* do the actual directory listing */
+	status = pvfs_list_start(pvfs, name, search, &dir);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	/* we need to give a handle back to the client so it
+	   can continue a search */
+	id = idr_get_new(pvfs->search.idtree, search, MAX_OLD_SEARCHES);
+	if (id == -1) {
+		pvfs_search_cleanup(pvfs);
+		id = idr_get_new(pvfs->search.idtree, search, MAX_OLD_SEARCHES);
+	}
+	if (id == -1) {
+		return NT_STATUS_INSUFFICIENT_RESOURCES;
+	}
+
+	search->pvfs = pvfs;
+	search->handle = id;
+	search->dir = dir;
+	search->current_index = 0;
+	search->search_attrib = search_attrib & 0xFF;
+	search->must_attrib = (search_attrib>>8) & 0xFF;
+	search->last_used = time_mono(NULL);
+	search->te = NULL;
+
+	DLIST_ADD(pvfs->search.list, search);
+
+	talloc_set_destructor(search, pvfs_search_destructor);
+
+	status = pvfs_search_fill(pvfs, req, io->search_first.in.max_count, search, io->generic.data_level,
+				  &reply_count, search_private, callback);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	io->search_first.out.count = reply_count;
+
+	/* not matching any entries is an error */
+	if (reply_count == 0) {
+		return STATUS_NO_MORE_FILES;
+	}
+
+	talloc_steal(pvfs, search);
+
+	return NT_STATUS_OK;
+}
+
+/* continue a old style search */
+static NTSTATUS pvfs_search_next_old(struct ntvfs_module_context *ntvfs,
+				     struct ntvfs_request *req, union smb_search_next *io, 
+				     void *search_private, 
+				     bool (*callback)(void *, const union smb_search_data *))
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	void *p;
+	struct pvfs_search_state *search;
+	struct pvfs_dir *dir;
+	unsigned int reply_count, max_count;
+	uint16_t handle;
+	NTSTATUS status;
+
+	handle    = io->search_next.in.id.handle | (io->search_next.in.id.reserved<<8);
+	max_count = io->search_next.in.max_count;
+
+	p = idr_find(pvfs->search.idtree, handle);
+	if (p == NULL) {
+		/* we didn't find the search handle */
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	search = talloc_get_type(p, struct pvfs_search_state);
+
+	dir = search->dir;
+
+	status = pvfs_list_seek_ofs(dir, io->search_next.in.id.server_cookie, 
+				    &search->current_index);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+	search->last_used = time_mono(NULL);
+
+	status = pvfs_search_fill(pvfs, req, max_count, search, io->generic.data_level,
+				  &reply_count, search_private, callback);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	io->search_next.out.count = reply_count;
+
+	/* not matching any entries means end of search */
+	if (reply_count == 0) {
+		talloc_free(search);
+	}
+
+	return NT_STATUS_OK;
+}
+
+/* 
+   list files in a directory matching a wildcard pattern
+*/
+static NTSTATUS pvfs_search_first_trans2(struct ntvfs_module_context *ntvfs,
+					 struct ntvfs_request *req, union smb_search_first *io, 
+					 void *search_private, 
+					 bool (*callback)(void *, const union smb_search_data *))
+{
+	struct pvfs_dir *dir;
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct pvfs_search_state *search;
+	unsigned int reply_count;
+	uint16_t search_attrib, max_count;
+	const char *pattern;
+	NTSTATUS status;
+	struct pvfs_filename *name;
+	int id;
+
+	search_attrib = io->t2ffirst.in.search_attrib;
+	pattern       = io->t2ffirst.in.pattern;
+	max_count     = io->t2ffirst.in.max_count;
+
+	/* resolve the cifs name to a posix name */
+	status = pvfs_resolve_name(pvfs, req, pattern, PVFS_RESOLVE_WILDCARD, &name);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	if (!name->has_wildcard && !name->exists) {
+		return NT_STATUS_NO_SUCH_FILE;
+	}
+
+	status = pvfs_access_check_parent(pvfs, req, name, SEC_DIR_TRAVERSE | SEC_DIR_LIST);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	/* we initially make search a child of the request, then if we
+	   need to keep it long term we steal it for the private
+	   structure */
+	search = talloc(req, struct pvfs_search_state);
+	if (!search) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	/* do the actual directory listing */
+	status = pvfs_list_start(pvfs, name, search, &dir);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	id = idr_get_new(pvfs->search.idtree, search, MAX_SEARCH_HANDLES);
+	if (id == -1) {
+		return NT_STATUS_INSUFFICIENT_RESOURCES;
+	}
+
+	search->pvfs = pvfs;
+	search->handle = id;
+	search->dir = dir;
+	search->current_index = 0;
+	search->search_attrib = search_attrib;
+	search->must_attrib = 0;
+	search->last_used = 0;
+	search->num_ea_names = io->t2ffirst.in.num_names;
+	search->ea_names = io->t2ffirst.in.ea_names;
+	search->te = NULL;
+
+	DLIST_ADD(pvfs->search.list, search);
+	talloc_set_destructor(search, pvfs_search_destructor);
+
+	status = pvfs_search_fill(pvfs, req, max_count, search, io->generic.data_level,
+				  &reply_count, search_private, callback);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	/* not matching any entries is an error */
+	if (reply_count == 0) {
+		return NT_STATUS_NO_SUCH_FILE;
+	}
+
+	io->t2ffirst.out.count = reply_count;
+	io->t2ffirst.out.handle = search->handle;
+	io->t2ffirst.out.end_of_search = pvfs_list_eos(dir, search->current_index) ? 1 : 0;
+
+	/* work out if we are going to keep the search state
+	   and allow for a search continue */
+	if ((io->t2ffirst.in.flags & FLAG_TRANS2_FIND_CLOSE) ||
+	    ((io->t2ffirst.in.flags & FLAG_TRANS2_FIND_CLOSE_IF_END) && 
+	     io->t2ffirst.out.end_of_search)) {
+		talloc_free(search);
+	} else {
+		talloc_steal(pvfs, search);
+	}
+
+	return NT_STATUS_OK;
+}
+
+/* continue a search */
+static NTSTATUS pvfs_search_next_trans2(struct ntvfs_module_context *ntvfs,
+					struct ntvfs_request *req, union smb_search_next *io, 
+					void *search_private, 
+					bool (*callback)(void *, const union smb_search_data *))
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	void *p;
+	struct pvfs_search_state *search;
+	struct pvfs_dir *dir;
+	unsigned int reply_count;
+	uint16_t handle;
+	NTSTATUS status;
+
+	handle = io->t2fnext.in.handle;
+
+	p = idr_find(pvfs->search.idtree, handle);
+	if (p == NULL) {
+		/* we didn't find the search handle */
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	search = talloc_get_type(p, struct pvfs_search_state);
+
+	dir = search->dir;
+	
+	status = NT_STATUS_OK;
+
+	/* work out what type of continuation is being used */
+	if (io->t2fnext.in.last_name && *io->t2fnext.in.last_name) {
+		status = pvfs_list_seek(dir, io->t2fnext.in.last_name, &search->current_index);
+		if (!NT_STATUS_IS_OK(status) && io->t2fnext.in.resume_key) {
+			status = pvfs_list_seek_ofs(dir, io->t2fnext.in.resume_key, 
+						    &search->current_index);
+		}
+	} else if (!(io->t2fnext.in.flags & FLAG_TRANS2_FIND_CONTINUE)) {
+		status = pvfs_list_seek_ofs(dir, io->t2fnext.in.resume_key, 
+					    &search->current_index);
+	}
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	search->num_ea_names = io->t2fnext.in.num_names;
+	search->ea_names = io->t2fnext.in.ea_names;
+
+	status = pvfs_search_fill(pvfs, req, io->t2fnext.in.max_count, search, io->generic.data_level,
+				  &reply_count, search_private, callback);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	io->t2fnext.out.count = reply_count;
+	io->t2fnext.out.end_of_search = pvfs_list_eos(dir, search->current_index) ? 1 : 0;
+
+	/* work out if we are going to keep the search state */
+	if ((io->t2fnext.in.flags & FLAG_TRANS2_FIND_CLOSE) ||
+	    ((io->t2fnext.in.flags & FLAG_TRANS2_FIND_CLOSE_IF_END) && 
+	     io->t2fnext.out.end_of_search)) {
+		talloc_free(search);
+	}
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS pvfs_search_first_smb2(struct ntvfs_module_context *ntvfs,
+				       struct ntvfs_request *req, const struct smb2_find *io, 
+				       void *search_private, 
+				       bool (*callback)(void *, const union smb_search_data *))
+{
+	struct pvfs_dir *dir;
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct pvfs_search_state *search;
+	unsigned int reply_count;
+	uint16_t max_count;
+	const char *pattern;
+	NTSTATUS status;
+	struct pvfs_filename *name;
+	struct pvfs_file *f;
+
+	f = pvfs_find_fd(pvfs, req, io->in.file.ntvfs);
+	if (!f) {
+		return NT_STATUS_FILE_CLOSED;
+	}
+
+	/* its only valid for directories */
+	if (f->handle->fd != -1) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	if (!(f->access_mask & SEC_DIR_LIST)) {
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
+	if (f->search) {
+		talloc_free(f->search);
+		f->search = NULL;
+	}
+
+	if (strequal(io->in.pattern, "")) {
+		return NT_STATUS_OBJECT_NAME_INVALID;
+	}
+	if (strchr_m(io->in.pattern, '\\')) {
+		return NT_STATUS_OBJECT_NAME_INVALID;
+	}
+	if (strchr_m(io->in.pattern, '/')) {
+		return NT_STATUS_OBJECT_NAME_INVALID;
+	}
+
+	if (strequal("", f->handle->name->original_name)) {
+		pattern = talloc_asprintf(req, "%s", io->in.pattern);
+		NT_STATUS_HAVE_NO_MEMORY(pattern);
+	} else {
+		pattern = talloc_asprintf(req, "%s\\%s",
+					  f->handle->name->original_name,
+					  io->in.pattern);
+		NT_STATUS_HAVE_NO_MEMORY(pattern);
+	}
+
+	/* resolve the cifs name to a posix name */
+	status = pvfs_resolve_name(pvfs, req, pattern, PVFS_RESOLVE_WILDCARD, &name);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	if (!name->has_wildcard && !name->exists) {
+		return NT_STATUS_NO_SUCH_FILE;
+	}
+
+	/* we initially make search a child of the request, then if we
+	   need to keep it long term we steal it for the private
+	   structure */
+	search = talloc(req, struct pvfs_search_state);
+	NT_STATUS_HAVE_NO_MEMORY(search);
+
+	/* do the actual directory listing */
+	status = pvfs_list_start(pvfs, name, search, &dir);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	search->pvfs		= pvfs;
+	search->handle		= INVALID_SEARCH_HANDLE;
+	search->dir		= dir;
+	search->current_index	= 0;
+	search->search_attrib	= 0x0000FFFF;
+	search->must_attrib	= 0;
+	search->last_used	= 0;
+	search->num_ea_names	= 0;
+	search->ea_names	= NULL;
+	search->te		= NULL;
+
+	if (io->in.continue_flags & SMB2_CONTINUE_FLAG_SINGLE) {
+		max_count = 1;
+	} else {
+		max_count = UINT16_MAX;
+	}
+
+	status = pvfs_search_fill(pvfs, req, max_count, search, io->data_level,
+				  &reply_count, search_private, callback);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	/* not matching any entries is an error */
+	if (reply_count == 0) {
+		return NT_STATUS_NO_SUCH_FILE;
+	}
+
+	f->search = talloc_steal(f, search);
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS pvfs_search_next_smb2(struct ntvfs_module_context *ntvfs,
+				      struct ntvfs_request *req, const struct smb2_find *io, 
+				      void *search_private, 
+				      bool (*callback)(void *, const union smb_search_data *))
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct pvfs_search_state *search;
+	unsigned int reply_count;
+	uint16_t max_count;
+	NTSTATUS status;
+	struct pvfs_file *f;
+
+	f = pvfs_find_fd(pvfs, req, io->in.file.ntvfs);
+	if (!f) {
+		return NT_STATUS_FILE_CLOSED;
+	}
+
+	/* its only valid for directories */
+	if (f->handle->fd != -1) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	/* if there's no search started on the dir handle, it's like a search_first */
+	search = f->search;
+	if (!search) {
+		return pvfs_search_first_smb2(ntvfs, req, io, search_private, callback);
+	}
+
+	if (io->in.continue_flags & SMB2_CONTINUE_FLAG_RESTART) {
+		search->current_index = 0;
+	}
+
+	if (io->in.continue_flags & SMB2_CONTINUE_FLAG_SINGLE) {
+		max_count = 1;
+	} else {
+		max_count = UINT16_MAX;
+	}
+
+	status = pvfs_search_fill(pvfs, req, max_count, search, io->data_level,
+				  &reply_count, search_private, callback);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	/* not matching any entries is an error */
+	if (reply_count == 0) {
+		return STATUS_NO_MORE_FILES;
+	}
+
+	return NT_STATUS_OK;
+}
+
+/* 
+   list files in a directory matching a wildcard pattern
+*/
+NTSTATUS pvfs_search_first(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req, union smb_search_first *io, 
+			   void *search_private, 
+			   bool (*callback)(void *, const union smb_search_data *))
+{
+	switch (io->generic.level) {
+	case RAW_SEARCH_SEARCH:
+	case RAW_SEARCH_FFIRST:
+	case RAW_SEARCH_FUNIQUE:
+		return pvfs_search_first_old(ntvfs, req, io, search_private, callback);
+
+	case RAW_SEARCH_TRANS2:
+		return pvfs_search_first_trans2(ntvfs, req, io, search_private, callback);
+
+	case RAW_SEARCH_SMB2:
+		return pvfs_search_first_smb2(ntvfs, req, &io->smb2, search_private, callback);
+	}
+
+	return NT_STATUS_INVALID_LEVEL;
+}
+
+/* continue a search */
+NTSTATUS pvfs_search_next(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req, union smb_search_next *io, 
+			  void *search_private, 
+			  bool (*callback)(void *, const union smb_search_data *))
+{
+	switch (io->generic.level) {
+	case RAW_SEARCH_SEARCH:
+	case RAW_SEARCH_FFIRST:
+		return pvfs_search_next_old(ntvfs, req, io, search_private, callback);
+
+	case RAW_SEARCH_FUNIQUE:
+		return NT_STATUS_INVALID_LEVEL;
+
+	case RAW_SEARCH_TRANS2:
+		return pvfs_search_next_trans2(ntvfs, req, io, search_private, callback);
+
+	case RAW_SEARCH_SMB2:
+		return pvfs_search_next_smb2(ntvfs, req, &io->smb2, search_private, callback);
+	}
+
+	return NT_STATUS_INVALID_LEVEL;
+}
+
+
+/* close a search */
+NTSTATUS pvfs_search_close(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req, union smb_search_close *io)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	void *p;
+	struct pvfs_search_state *search;
+	uint16_t handle = INVALID_SEARCH_HANDLE;
+
+	switch (io->generic.level) {
+	case RAW_FINDCLOSE_GENERIC:
+		return NT_STATUS_INVALID_LEVEL;
+
+	case RAW_FINDCLOSE_FCLOSE:
+		handle = io->fclose.in.id.handle;
+		break;
+
+	case RAW_FINDCLOSE_FINDCLOSE:
+		handle = io->findclose.in.handle;
+		break;
+	}
+
+	p = idr_find(pvfs->search.idtree, handle);
+	if (p == NULL) {
+		/* we didn't find the search handle */
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	search = talloc_get_type(p, struct pvfs_search_state);
+
+	talloc_free(search);
+
+	return NT_STATUS_OK;
+}
+
diff --git a/source4/ntvfs/posix/pvfs_seek.c b/source4/ntvfs/posix/pvfs_seek.c
new file mode 100644
index 0000000..2cd3410
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_seek.c
@@ -0,0 +1,65 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - seek
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+
+/*
+  seek in a file
+*/
+NTSTATUS pvfs_seek(struct ntvfs_module_context *ntvfs,
+		   struct ntvfs_request *req,
+		   union smb_seek *io)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct pvfs_file *f;
+	struct pvfs_file_handle *h;
+	NTSTATUS status;
+
+	f = pvfs_find_fd(pvfs, req, io->lseek.in.file.ntvfs);
+	if (!f) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+	h = f->handle;
+
+	status = NT_STATUS_OK;
+
+	switch (io->lseek.in.mode) {
+	case SEEK_MODE_START:
+		h->seek_offset = io->lseek.in.offset;
+		break;
+
+	case SEEK_MODE_CURRENT:
+		h->seek_offset += io->lseek.in.offset;
+		break;
+
+	case SEEK_MODE_END:
+		status = pvfs_resolve_name_fd(pvfs, h->fd, h->name, PVFS_RESOLVE_NO_OPENDB);
+		h->seek_offset = h->name->st.st_size + io->lseek.in.offset;
+		break;
+	}
+
+	io->lseek.out.offset = h->seek_offset;
+
+	return status;
+}
+
diff --git a/source4/ntvfs/posix/pvfs_setfileinfo.c b/source4/ntvfs/posix/pvfs_setfileinfo.c
new file mode 100644
index 0000000..7fd4e35
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_setfileinfo.c
@@ -0,0 +1,884 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - setfileinfo
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "system/time.h"
+#include "librpc/gen_ndr/xattr.h"
+
+
+/*
+  determine what access bits are needed for a call
+*/
+static uint32_t pvfs_setfileinfo_access(union smb_setfileinfo *info)
+{
+	uint32_t needed;
+
+	switch (info->generic.level) {
+	case RAW_SFILEINFO_EA_SET:
+		needed = SEC_FILE_WRITE_EA;
+		break;
+
+	case RAW_SFILEINFO_DISPOSITION_INFO:
+	case RAW_SFILEINFO_DISPOSITION_INFORMATION:
+		needed = SEC_STD_DELETE;
+		break;
+
+	case RAW_SFILEINFO_END_OF_FILE_INFO:
+		needed = SEC_FILE_WRITE_DATA;
+		break;
+
+	case RAW_SFILEINFO_POSITION_INFORMATION:
+		needed = 0;
+		break;
+
+	case RAW_SFILEINFO_SEC_DESC:
+		needed = 0;
+		if (info->set_secdesc.in.secinfo_flags & (SECINFO_OWNER|SECINFO_GROUP)) {
+			needed |= SEC_STD_WRITE_OWNER;
+		}
+		if (info->set_secdesc.in.secinfo_flags & SECINFO_DACL) {
+			needed |= SEC_STD_WRITE_DAC;
+		}
+		if (info->set_secdesc.in.secinfo_flags & SECINFO_SACL) {
+			needed |= SEC_FLAG_SYSTEM_SECURITY;
+		}
+		break;
+
+	case RAW_SFILEINFO_RENAME_INFORMATION:
+	case RAW_SFILEINFO_RENAME_INFORMATION_SMB2:
+		needed = SEC_STD_DELETE;
+		break;
+
+	default:
+		needed = SEC_FILE_WRITE_ATTRIBUTE;
+		break;
+	}
+
+	return needed;
+}
+
+/*
+  rename_information level for streams
+*/
+static NTSTATUS pvfs_setfileinfo_rename_stream(struct pvfs_state *pvfs, 
+					       struct ntvfs_request *req, 
+					       struct pvfs_filename *name,
+					       int fd,
+					       DATA_BLOB *odb_locking_key,
+					       union smb_setfileinfo *info)
+{
+	NTSTATUS status;
+	struct odb_lock *lck = NULL;
+
+	/* strangely, this gives a sharing violation, not invalid
+	   parameter */
+	if (info->rename_information.in.new_name[0] != ':') {
+		return NT_STATUS_SHARING_VIOLATION;
+	}
+
+	status = pvfs_access_check_simple(pvfs, req, name, SEC_FILE_WRITE_ATTRIBUTE);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	lck = odb_lock(req, pvfs->odb_context, odb_locking_key);
+	if (lck == NULL) {
+		DEBUG(0,("Unable to lock opendb for can_stat\n"));
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+
+	status = pvfs_stream_rename(pvfs, name, fd, 
+				    info->rename_information.in.new_name+1,
+				    info->rename_information.in.overwrite);
+	return status;
+}
+
+/*
+  rename_information level
+*/
+static NTSTATUS pvfs_setfileinfo_rename(struct pvfs_state *pvfs, 
+					struct ntvfs_request *req, 
+					struct pvfs_filename *name,
+					int fd,
+					DATA_BLOB *odb_locking_key,
+					union smb_setfileinfo *info)
+{
+	NTSTATUS status;
+	struct pvfs_filename *name2;
+	char *new_name, *p;
+	struct odb_lock *lck = NULL;
+
+	/* renames are only allowed within a directory */
+	if (strchr_m(info->rename_information.in.new_name, '\\') &&
+	    (req->ctx->protocol < PROTOCOL_SMB2_02)) {
+		return NT_STATUS_NOT_SUPPORTED;
+	}
+
+	/* handle stream renames specially */
+	if (name->stream_name) {
+		return pvfs_setfileinfo_rename_stream(pvfs, req, name, fd, 
+						      odb_locking_key, info);
+	}
+
+	/* w2k3 does not appear to allow relative rename. On SMB2, vista sends it sometimes,
+	   but I suspect it is just uninitialised memory */
+	if (info->rename_information.in.root_fid != 0 && 
+	    (req->ctx->protocol < PROTOCOL_SMB2_02)) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	/* construct the fully qualified windows name for the new file name */
+	if (req->ctx->protocol >= PROTOCOL_SMB2_02) {
+		/* SMB2 sends the full path of the new name */
+		new_name = talloc_asprintf(req, "\\%s", info->rename_information.in.new_name);
+	} else {
+		new_name = talloc_strdup(req, name->original_name);
+		if (new_name == NULL) {
+			return NT_STATUS_NO_MEMORY;
+		}
+		p = strrchr_m(new_name, '\\');
+		if (p == NULL) {
+			return NT_STATUS_OBJECT_NAME_INVALID;
+		} else {
+			*p = 0;
+		}
+
+		new_name = talloc_asprintf(req, "%s\\%s", new_name,
+					   info->rename_information.in.new_name);
+	}
+	if (new_name == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	/* resolve the new name */
+	status = pvfs_resolve_name(pvfs, req, new_name, 0, &name2);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	/* if the destination exists, then check the rename is allowed */
+	if (name2->exists) {
+		if (strcmp(name2->full_name, name->full_name) == 0) {
+			/* rename to same name is null-op */
+			return NT_STATUS_OK;
+		}
+
+		if (!info->rename_information.in.overwrite) {
+			return NT_STATUS_OBJECT_NAME_COLLISION;
+		}
+
+		status = pvfs_can_delete(pvfs, req, name2, NULL);
+		if (NT_STATUS_EQUAL(status, NT_STATUS_DELETE_PENDING)) {
+			return NT_STATUS_ACCESS_DENIED;
+		}
+		if (NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION)) {
+			return NT_STATUS_ACCESS_DENIED;
+		}
+		if (!NT_STATUS_IS_OK(status)) {
+			return status;
+		}
+	}
+
+	status = pvfs_access_check_parent(pvfs, req, name2, SEC_DIR_ADD_FILE);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	lck = odb_lock(req, pvfs->odb_context, odb_locking_key);
+	if (lck == NULL) {
+		DEBUG(0,("Unable to lock opendb for can_stat\n"));
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	status = pvfs_do_rename(pvfs, lck, name, name2->full_name);
+	talloc_free(lck);
+	NT_STATUS_NOT_OK_RETURN(status);
+	if (NT_STATUS_IS_OK(status)) {
+		name->full_name = talloc_steal(name, name2->full_name);
+		name->original_name = talloc_steal(name, name2->original_name);
+	}
+
+	return NT_STATUS_OK;
+}
+
+/*
+  add a single DOS EA
+*/
+NTSTATUS pvfs_setfileinfo_ea_set(struct pvfs_state *pvfs, 
+				 struct pvfs_filename *name,
+				 int fd, uint16_t num_eas,
+				 struct ea_struct *eas)
+{
+	struct xattr_DosEAs *ealist;
+	int i, j;
+	NTSTATUS status;
+
+	if (num_eas == 0) {
+		return NT_STATUS_OK;
+	}
+
+	if (!(pvfs->flags & PVFS_FLAG_XATTR_ENABLE)) {
+		return NT_STATUS_NOT_SUPPORTED;
+	}
+
+	ealist = talloc(name, struct xattr_DosEAs);
+
+	/* load the current list */
+	status = pvfs_doseas_load(pvfs, name, fd, ealist);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	for (j=0;j<num_eas;j++) {
+		struct ea_struct *ea = &eas[j];
+		/* see if its already there */
+		for (i=0;i<ealist->num_eas;i++) {
+			if (strcasecmp_m(ealist->eas[i].name, ea->name.s) == 0) {
+				ealist->eas[i].value = ea->value;
+				break;
+			}
+		}
+
+		if (i==ealist->num_eas) {
+			/* add it */
+			ealist->eas = talloc_realloc(ealist, ealist->eas, 
+						       struct xattr_EA, 
+						       ealist->num_eas+1);
+			if (ealist->eas == NULL) {
+				return NT_STATUS_NO_MEMORY;
+			}
+			ealist->eas[i].name = ea->name.s;
+			ealist->eas[i].value = ea->value;
+			ealist->num_eas++;
+		}
+	}
+	
+	/* pull out any null EAs */
+	for (i=0;i<ealist->num_eas;i++) {
+		if (ealist->eas[i].value.length == 0) {
+			memmove(&ealist->eas[i],
+				&ealist->eas[i+1],
+				(ealist->num_eas-(i+1)) * sizeof(ealist->eas[i]));
+			ealist->num_eas--;
+			i--;
+		}
+	}
+
+	status = pvfs_doseas_save(pvfs, name, fd, ealist);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	notify_trigger(pvfs->notify_context, 
+		       NOTIFY_ACTION_MODIFIED, 
+		       FILE_NOTIFY_CHANGE_EA,
+		       name->full_name);
+
+	name->dos.ea_size = 4;
+	for (i=0;i<ealist->num_eas;i++) {
+		name->dos.ea_size += 4 + strlen(ealist->eas[i].name)+1 + 
+			ealist->eas[i].value.length;
+	}
+
+	/* update the ea_size attrib */
+	return pvfs_dosattrib_save(pvfs, name, fd);
+}
+
+/*
+  set info on a open file
+*/
+NTSTATUS pvfs_setfileinfo(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req, 
+			  union smb_setfileinfo *info)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct pvfs_file *f;
+	struct pvfs_file_handle *h;
+	struct pvfs_filename newstats;
+	NTSTATUS status;
+	uint32_t access_needed;
+	uint32_t change_mask = 0;
+
+	f = pvfs_find_fd(pvfs, req, info->generic.in.file.ntvfs);
+	if (!f) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	h = f->handle;
+
+	access_needed = pvfs_setfileinfo_access(info);
+	if ((f->access_mask & access_needed) != access_needed) {
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
+	/* update the file information */
+	status = pvfs_resolve_name_handle(pvfs, h);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	/* we take a copy of the current file stats, then update
+	   newstats in each of the elements below. At the end we
+	   compare, and make any changes needed */
+	newstats = *h->name;
+
+	switch (info->generic.level) {
+	case RAW_SFILEINFO_SETATTR:
+		if (!null_time(info->setattr.in.write_time)) {
+			unix_to_nt_time(&newstats.dos.write_time, info->setattr.in.write_time);
+		}
+		if (info->setattr.in.attrib != FILE_ATTRIBUTE_NORMAL) {
+			newstats.dos.attrib = info->setattr.in.attrib;
+		}
+  		break;
+
+	case RAW_SFILEINFO_SETATTRE:
+	case RAW_SFILEINFO_STANDARD:
+		if (!null_time(info->setattre.in.create_time)) {
+			unix_to_nt_time(&newstats.dos.create_time, info->setattre.in.create_time);
+		}
+		if (!null_time(info->setattre.in.access_time)) {
+			unix_to_nt_time(&newstats.dos.access_time, info->setattre.in.access_time);
+		}
+		if (!null_time(info->setattre.in.write_time)) {
+			unix_to_nt_time(&newstats.dos.write_time, info->setattre.in.write_time);
+		}
+  		break;
+
+	case RAW_SFILEINFO_EA_SET:
+		return pvfs_setfileinfo_ea_set(pvfs, h->name, h->fd,
+					       info->ea_set.in.num_eas,
+					       info->ea_set.in.eas);
+
+	case RAW_SFILEINFO_BASIC_INFO:
+	case RAW_SFILEINFO_BASIC_INFORMATION:
+		if (!null_nttime(info->basic_info.in.create_time)) {
+			newstats.dos.create_time = info->basic_info.in.create_time;
+		}
+		if (!null_nttime(info->basic_info.in.access_time)) {
+			newstats.dos.access_time = info->basic_info.in.access_time;
+		}
+		if (!null_nttime(info->basic_info.in.write_time)) {
+			newstats.dos.write_time = info->basic_info.in.write_time;
+		}
+		if (!null_nttime(info->basic_info.in.change_time)) {
+			newstats.dos.change_time = info->basic_info.in.change_time;
+		}
+		if (info->basic_info.in.attrib != 0) {
+			newstats.dos.attrib = info->basic_info.in.attrib;
+		}
+  		break;
+
+	case RAW_SFILEINFO_DISPOSITION_INFO:
+	case RAW_SFILEINFO_DISPOSITION_INFORMATION:
+		return pvfs_set_delete_on_close(pvfs, req, f, 
+						info->disposition_info.in.delete_on_close);
+
+	case RAW_SFILEINFO_ALLOCATION_INFO:
+	case RAW_SFILEINFO_ALLOCATION_INFORMATION:
+		status = pvfs_break_level2_oplocks(f);
+		NT_STATUS_NOT_OK_RETURN(status);
+
+		newstats.dos.alloc_size = info->allocation_info.in.alloc_size;
+		if (newstats.dos.alloc_size < newstats.st.st_size) {
+			newstats.st.st_size = newstats.dos.alloc_size;
+		}
+		newstats.dos.alloc_size = pvfs_round_alloc_size(pvfs, 
+								newstats.dos.alloc_size);
+		break;
+
+	case RAW_SFILEINFO_END_OF_FILE_INFO:
+	case RAW_SFILEINFO_END_OF_FILE_INFORMATION:
+		status = pvfs_break_level2_oplocks(f);
+		NT_STATUS_NOT_OK_RETURN(status);
+
+		newstats.st.st_size = info->end_of_file_info.in.size;
+		break;
+
+	case RAW_SFILEINFO_POSITION_INFORMATION:
+		h->position = info->position_information.in.position;
+		break;
+
+	case RAW_SFILEINFO_FULL_EA_INFORMATION:
+		return pvfs_setfileinfo_ea_set(pvfs, h->name, h->fd,
+				info->full_ea_information.in.eas.num_eas,
+				info->full_ea_information.in.eas.eas);
+
+	case RAW_SFILEINFO_MODE_INFORMATION:
+		/* this one is a puzzle */
+		if (info->mode_information.in.mode != 0 &&
+		    info->mode_information.in.mode != 2 &&
+		    info->mode_information.in.mode != 4 &&
+		    info->mode_information.in.mode != 6) {
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+		h->mode = info->mode_information.in.mode;
+		break;
+
+	case RAW_SFILEINFO_RENAME_INFORMATION:
+	case RAW_SFILEINFO_RENAME_INFORMATION_SMB2:
+		return pvfs_setfileinfo_rename(pvfs, req, h->name, f->handle->fd,
+					       &h->odb_locking_key,
+					       info);
+
+	case RAW_SFILEINFO_SEC_DESC:
+		notify_trigger(pvfs->notify_context, 
+			       NOTIFY_ACTION_MODIFIED, 
+			       FILE_NOTIFY_CHANGE_SECURITY,
+			       h->name->full_name);
+		return pvfs_acl_set(pvfs, req, h->name, h->fd, f->access_mask, info);
+
+	default:
+		return NT_STATUS_INVALID_LEVEL;
+	}
+
+	/* possibly change the file size */
+	if (newstats.st.st_size != h->name->st.st_size) {
+		if (h->name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY) {
+			return NT_STATUS_FILE_IS_A_DIRECTORY;
+		}
+		if (h->name->stream_name) {
+			status = pvfs_stream_truncate(pvfs, h->name, h->fd, newstats.st.st_size);
+			if (!NT_STATUS_IS_OK(status)) {
+				return status;
+			}
+			
+			change_mask |= FILE_NOTIFY_CHANGE_STREAM_SIZE;
+		} else {
+			int ret;
+			if (f->access_mask & 
+			    (SEC_FILE_WRITE_DATA|SEC_FILE_APPEND_DATA)) {
+				ret = ftruncate(h->fd, newstats.st.st_size);
+			} else {
+				ret = truncate(h->name->full_name, newstats.st.st_size);
+			}
+			if (ret == -1) {
+				return pvfs_map_errno(pvfs, errno);
+			}
+			change_mask |= FILE_NOTIFY_CHANGE_SIZE | FILE_NOTIFY_CHANGE_ATTRIBUTES;
+		}
+	}
+
+	/* possibly change the file timestamps */
+	if (newstats.dos.create_time != h->name->dos.create_time) {
+		change_mask |= FILE_NOTIFY_CHANGE_CREATION;
+	}
+	if (newstats.dos.access_time != h->name->dos.access_time) {
+		change_mask |= FILE_NOTIFY_CHANGE_LAST_ACCESS;
+	}
+	if (newstats.dos.write_time != h->name->dos.write_time) {
+		change_mask |= FILE_NOTIFY_CHANGE_LAST_WRITE;
+	}
+	if ((change_mask & FILE_NOTIFY_CHANGE_LAST_ACCESS) ||
+	    (change_mask & FILE_NOTIFY_CHANGE_LAST_WRITE)) {
+		struct timeval tv[2];
+
+		nttime_to_timeval(&tv[0], newstats.dos.access_time);
+		nttime_to_timeval(&tv[1], newstats.dos.write_time);
+
+		if (!timeval_is_zero(&tv[0]) || !timeval_is_zero(&tv[1])) {
+			if (utimes(h->name->full_name, tv) == -1) {
+				DEBUG(0,("pvfs_setfileinfo: utimes() failed '%s' - %s\n",
+					 h->name->full_name, strerror(errno)));
+				return pvfs_map_errno(pvfs, errno);
+			}
+		}
+	}
+	if (change_mask & FILE_NOTIFY_CHANGE_LAST_WRITE) {
+		struct odb_lock *lck;
+
+		lck = odb_lock(req, h->pvfs->odb_context, &h->odb_locking_key);
+		if (lck == NULL) {
+			DEBUG(0,("Unable to lock opendb for write time update\n"));
+			return NT_STATUS_INTERNAL_ERROR;
+		}
+
+		status = odb_set_write_time(lck, newstats.dos.write_time, true);
+		if (!NT_STATUS_IS_OK(status)) {
+			DEBUG(0,("Unable to update write time: %s\n",
+				nt_errstr(status)));
+			talloc_free(lck);
+			return status;
+		}
+
+		talloc_free(lck);
+
+		h->write_time.update_forced = true;
+		h->write_time.update_on_close = false;
+		talloc_free(h->write_time.update_event);
+		h->write_time.update_event = NULL;
+	}
+
+	/* possibly change the attribute */
+	if (newstats.dos.attrib != h->name->dos.attrib) {
+		mode_t mode;
+		if ((newstats.dos.attrib & FILE_ATTRIBUTE_DIRECTORY) &&
+		    !(h->name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY)) {
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+		mode = pvfs_fileperms(pvfs, newstats.dos.attrib);
+		if (!(h->name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY)) {
+			if (pvfs_sys_fchmod(pvfs, h->fd, mode, h->name->allow_override) == -1) {
+				return pvfs_map_errno(pvfs, errno);
+			}
+		}
+		change_mask |= FILE_NOTIFY_CHANGE_ATTRIBUTES;
+	}
+
+	*h->name = newstats;
+
+	notify_trigger(pvfs->notify_context, 
+		       NOTIFY_ACTION_MODIFIED, 
+		       change_mask,
+		       h->name->full_name);
+
+	return pvfs_dosattrib_save(pvfs, h->name, h->fd);
+}
+
+/*
+  retry an open after a sharing violation
+*/
+static void pvfs_retry_setpathinfo(struct pvfs_odb_retry *r,
+				   struct ntvfs_module_context *ntvfs,
+				   struct ntvfs_request *req,
+				   void *_info,
+				   void *private_data,
+				   enum pvfs_wait_notice reason)
+{
+	union smb_setfileinfo *info = talloc_get_type(_info,
+				      union smb_setfileinfo);
+	NTSTATUS status = NT_STATUS_INTERNAL_ERROR;
+
+	talloc_free(r);
+
+	switch (reason) {
+	case PVFS_WAIT_CANCEL:
+/*TODO*/
+		status = NT_STATUS_CANCELLED;
+		break;
+	case PVFS_WAIT_TIMEOUT:
+		/* if it timed out, then give the failure
+		   immediately */
+/*TODO*/
+		status = NT_STATUS_SHARING_VIOLATION;
+		break;
+	case PVFS_WAIT_EVENT:
+
+		/* try the open again, which could trigger another retry setup
+		   if it wants to, so we have to unmark the async flag so we
+		   will know if it does a second async reply */
+		req->async_states->state &= ~NTVFS_ASYNC_STATE_ASYNC;
+
+		status = pvfs_setpathinfo(ntvfs, req, info);
+		if (req->async_states->state & NTVFS_ASYNC_STATE_ASYNC) {
+			/* the 2nd try also replied async, so we don't send
+			   the reply yet */
+			return;
+		}
+
+		/* re-mark it async, just in case someone up the chain does
+		   paranoid checking */
+		req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
+		break;
+	}
+
+	/* send the reply up the chain */
+	req->async_states->status = status;
+	req->async_states->send_fn(req);
+}
+
+/*
+  setup for a unlink retry after a sharing violation
+  or a non granted oplock
+*/
+static NTSTATUS pvfs_setpathinfo_setup_retry(struct ntvfs_module_context *ntvfs,
+					     struct ntvfs_request *req,
+					     union smb_setfileinfo *info,
+					     struct odb_lock *lck,
+					     NTSTATUS status)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct timeval end_time;
+
+	if (NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION)) {
+		end_time = timeval_add(&req->statistics.request_time,
+				       0, pvfs->sharing_violation_delay);
+	} else if (NT_STATUS_EQUAL(status, NT_STATUS_OPLOCK_NOT_GRANTED)) {
+		end_time = timeval_add(&req->statistics.request_time,
+				       pvfs->oplock_break_timeout, 0);
+	} else {
+		return NT_STATUS_INTERNAL_ERROR;
+	}
+
+	return pvfs_odb_retry_setup(ntvfs, req, lck, end_time, info, NULL,
+				    pvfs_retry_setpathinfo);
+}
+
+/*
+  set info on a pathname
+*/
+NTSTATUS pvfs_setpathinfo(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req, union smb_setfileinfo *info)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct pvfs_filename *name;
+	struct pvfs_filename newstats;
+	NTSTATUS status;
+	uint32_t access_needed;
+	uint32_t change_mask = 0;
+	struct odb_lock *lck = NULL;
+	DATA_BLOB odb_locking_key;
+
+	/* resolve the cifs name to a posix name */
+	status = pvfs_resolve_name(pvfs, req, info->generic.in.file.path, 
+				   PVFS_RESOLVE_STREAMS, &name);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	if (!name->exists) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	access_needed = pvfs_setfileinfo_access(info);
+	status = pvfs_access_check_simple(pvfs, req, name, access_needed);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	/* we take a copy of the current file stats, then update
+	   newstats in each of the elements below. At the end we
+	   compare, and make any changes needed */
+	newstats = *name;
+
+	switch (info->generic.level) {
+	case RAW_SFILEINFO_SETATTR:
+		if (!null_time(info->setattr.in.write_time)) {
+			unix_to_nt_time(&newstats.dos.write_time, info->setattr.in.write_time);
+		}
+		if (info->setattr.in.attrib == 0) {
+			newstats.dos.attrib = FILE_ATTRIBUTE_NORMAL;
+		} else if (info->setattr.in.attrib != FILE_ATTRIBUTE_NORMAL) {
+			newstats.dos.attrib = info->setattr.in.attrib;
+		}
+  		break;
+
+	case RAW_SFILEINFO_SETATTRE:
+	case RAW_SFILEINFO_STANDARD:
+		if (!null_time(info->setattre.in.create_time)) {
+			unix_to_nt_time(&newstats.dos.create_time, info->setattre.in.create_time);
+		}
+		if (!null_time(info->setattre.in.access_time)) {
+			unix_to_nt_time(&newstats.dos.access_time, info->setattre.in.access_time);
+		}
+		if (!null_time(info->setattre.in.write_time)) {
+			unix_to_nt_time(&newstats.dos.write_time, info->setattre.in.write_time);
+		}
+  		break;
+
+	case RAW_SFILEINFO_EA_SET:
+		return pvfs_setfileinfo_ea_set(pvfs, name, -1, 
+					       info->ea_set.in.num_eas,
+					       info->ea_set.in.eas);
+
+	case RAW_SFILEINFO_BASIC_INFO:
+	case RAW_SFILEINFO_BASIC_INFORMATION:
+		if (!null_nttime(info->basic_info.in.create_time)) {
+			newstats.dos.create_time = info->basic_info.in.create_time;
+		}
+		if (!null_nttime(info->basic_info.in.access_time)) {
+			newstats.dos.access_time = info->basic_info.in.access_time;
+		}
+		if (!null_nttime(info->basic_info.in.write_time)) {
+			newstats.dos.write_time = info->basic_info.in.write_time;
+		}
+		if (!null_nttime(info->basic_info.in.change_time)) {
+			newstats.dos.change_time = info->basic_info.in.change_time;
+		}
+		if (info->basic_info.in.attrib != 0) {
+			newstats.dos.attrib = info->basic_info.in.attrib;
+		}
+  		break;
+
+	case RAW_SFILEINFO_ALLOCATION_INFO:
+	case RAW_SFILEINFO_ALLOCATION_INFORMATION:
+		status = pvfs_can_update_file_size(pvfs, req, name, &lck);
+		/*
+		 * on a sharing violation we need to retry when the file is closed by
+		 * the other user, or after 1 second
+		 * on a non granted oplock we need to retry when the file is closed by
+		 * the other user, or after 30 seconds
+		*/
+		if ((NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION) ||
+		     NT_STATUS_EQUAL(status, NT_STATUS_OPLOCK_NOT_GRANTED)) &&
+		    (req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+			return pvfs_setpathinfo_setup_retry(pvfs->ntvfs, req, info, lck, status);
+		}
+		NT_STATUS_NOT_OK_RETURN(status);
+
+		if (info->allocation_info.in.alloc_size > newstats.dos.alloc_size) {
+			/* strange. Increasing the allocation size via setpathinfo 
+			   should be silently ignored */
+			break;
+		}
+		newstats.dos.alloc_size = info->allocation_info.in.alloc_size;
+		if (newstats.dos.alloc_size < newstats.st.st_size) {
+			newstats.st.st_size = newstats.dos.alloc_size;
+		}
+		newstats.dos.alloc_size = pvfs_round_alloc_size(pvfs, 
+								newstats.dos.alloc_size);
+		break;
+
+	case RAW_SFILEINFO_END_OF_FILE_INFO:
+	case RAW_SFILEINFO_END_OF_FILE_INFORMATION:
+		status = pvfs_can_update_file_size(pvfs, req, name, &lck);
+		/*
+		 * on a sharing violation we need to retry when the file is closed by
+		 * the other user, or after 1 second
+		 * on a non granted oplock we need to retry when the file is closed by
+		 * the other user, or after 30 seconds
+		*/
+		if ((NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION) ||
+		     NT_STATUS_EQUAL(status, NT_STATUS_OPLOCK_NOT_GRANTED)) &&
+		    (req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+			return pvfs_setpathinfo_setup_retry(pvfs->ntvfs, req, info, lck, status);
+		}
+		NT_STATUS_NOT_OK_RETURN(status);
+
+		newstats.st.st_size = info->end_of_file_info.in.size;
+		break;
+
+	case RAW_SFILEINFO_MODE_INFORMATION:
+		if (info->mode_information.in.mode != 0 &&
+		    info->mode_information.in.mode != 2 &&
+		    info->mode_information.in.mode != 4 &&
+		    info->mode_information.in.mode != 6) {
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+		return NT_STATUS_OK;
+
+	case RAW_SFILEINFO_RENAME_INFORMATION:
+	case RAW_SFILEINFO_RENAME_INFORMATION_SMB2:
+		status = pvfs_locking_key(name, name, &odb_locking_key);
+		NT_STATUS_NOT_OK_RETURN(status);
+		status = pvfs_setfileinfo_rename(pvfs, req, name, -1,
+						 &odb_locking_key, info);
+		NT_STATUS_NOT_OK_RETURN(status);
+		return NT_STATUS_OK;
+
+	case RAW_SFILEINFO_DISPOSITION_INFO:
+	case RAW_SFILEINFO_DISPOSITION_INFORMATION:
+	case RAW_SFILEINFO_POSITION_INFORMATION:
+		return NT_STATUS_OK;
+
+	default:
+		return NT_STATUS_INVALID_LEVEL;
+	}
+
+	/* possibly change the file size */
+	if (newstats.st.st_size != name->st.st_size) {
+		if (name->stream_name) {
+			status = pvfs_stream_truncate(pvfs, name, -1, newstats.st.st_size);
+			if (!NT_STATUS_IS_OK(status)) {
+				return status;
+			}
+		} else if (truncate(name->full_name, newstats.st.st_size) == -1) {
+			return pvfs_map_errno(pvfs, errno);
+		}
+		change_mask |= FILE_NOTIFY_CHANGE_SIZE | FILE_NOTIFY_CHANGE_ATTRIBUTES;
+	}
+
+	/* possibly change the file timestamps */
+	if (newstats.dos.create_time != name->dos.create_time) {
+		change_mask |= FILE_NOTIFY_CHANGE_CREATION;
+	}
+	if (newstats.dos.access_time != name->dos.access_time) {
+		change_mask |= FILE_NOTIFY_CHANGE_LAST_ACCESS;
+	}
+	if (newstats.dos.write_time != name->dos.write_time) {
+		change_mask |= FILE_NOTIFY_CHANGE_LAST_WRITE;
+	}
+	if ((change_mask & FILE_NOTIFY_CHANGE_LAST_ACCESS) ||
+	    (change_mask & FILE_NOTIFY_CHANGE_LAST_WRITE)) {
+		struct timeval tv[2];
+
+		nttime_to_timeval(&tv[0], newstats.dos.access_time);
+		nttime_to_timeval(&tv[1], newstats.dos.write_time);
+
+		if (!timeval_is_zero(&tv[0]) || !timeval_is_zero(&tv[1])) {
+			if (utimes(name->full_name, tv) == -1) {
+				DEBUG(0,("pvfs_setpathinfo: utimes() failed '%s' - %s\n",
+					 name->full_name, strerror(errno)));
+				return pvfs_map_errno(pvfs, errno);
+			}
+		}
+	}
+	if (change_mask & FILE_NOTIFY_CHANGE_LAST_WRITE) {
+		if (lck == NULL) {
+			DATA_BLOB lkey;
+			status = pvfs_locking_key(name, name, &lkey);
+			NT_STATUS_NOT_OK_RETURN(status);
+
+			lck = odb_lock(req, pvfs->odb_context, &lkey);
+			data_blob_free(&lkey);
+			if (lck == NULL) {
+				DEBUG(0,("Unable to lock opendb for write time update\n"));
+				return NT_STATUS_INTERNAL_ERROR;
+			}
+		}
+
+		status = odb_set_write_time(lck, newstats.dos.write_time, true);
+		if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
+			/* it could be that nobody has opened the file */
+		} else if (!NT_STATUS_IS_OK(status)) {
+			DEBUG(0,("Unable to update write time: %s\n",
+				nt_errstr(status)));
+			return status;
+		}
+	}
+
+	/* possibly change the attribute */
+	newstats.dos.attrib |= (name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY);
+	if (newstats.dos.attrib != name->dos.attrib) {
+		mode_t mode = pvfs_fileperms(pvfs, newstats.dos.attrib);
+		if (pvfs_sys_chmod(pvfs, name->full_name, mode, name->allow_override) == -1) {
+			return pvfs_map_errno(pvfs, errno);
+		}
+		change_mask |= FILE_NOTIFY_CHANGE_ATTRIBUTES;
+	}
+
+	*name = newstats;
+
+	if (change_mask != 0) {
+		notify_trigger(pvfs->notify_context, 
+			       NOTIFY_ACTION_MODIFIED, 
+			       change_mask,
+			       name->full_name);
+	}
+
+	return pvfs_dosattrib_save(pvfs, name, -1);
+}
+
diff --git a/source4/ntvfs/posix/pvfs_shortname.c b/source4/ntvfs/posix/pvfs_shortname.c
new file mode 100644
index 0000000..9e3cf5f
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_shortname.c
@@ -0,0 +1,699 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - 8.3 name routines
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "system/locale.h"
+#include "vfs_posix.h"
+#include "param/param.h"
+
+#undef strcasecmp
+
+/*
+  this mangling scheme uses the following format
+
+  Annnn~n.AAA
+
+  where nnnnn is a base 36 hash, and A represents characters from the original string
+
+  The hash is taken of the leading part of the long filename, in uppercase
+
+  for simplicity, we only allow ascii characters in 8.3 names
+*/
+
+/*
+  ===============================================================================
+  NOTE NOTE NOTE!!!
+
+  This file deliberately uses non-multibyte string functions in many places. This
+  is *not* a mistake. This code is multi-byte safe, but it gets this property
+  through some very subtle knowledge of the way multi-byte strings are encoded 
+  and the fact that this mangling algorithm only supports ascii characters in
+  8.3 names.
+
+  please don't convert this file to use the *_m() functions!!
+  ===============================================================================
+*/
+
+
+#if 1
+#define M_DEBUG(level, x) DEBUG(level, x)
+#else
+#define M_DEBUG(level, x)
+#endif
+
+/* these flags are used to mark characters in as having particular
+   properties */
+#define FLAG_BASECHAR 1
+#define FLAG_ASCII 2
+#define FLAG_ILLEGAL 4
+#define FLAG_WILDCARD 8
+
+/* the "possible" flags are used as a fast way to find possible DOS
+   reserved filenames */
+#define FLAG_POSSIBLE1 16
+#define FLAG_POSSIBLE2 32
+#define FLAG_POSSIBLE3 64
+#define FLAG_POSSIBLE4 128
+
+#define DEFAULT_MANGLE_PREFIX 4
+
+#define MANGLE_BASECHARS "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+
+#define FLAG_CHECK(c, flag) (ctx->char_flags[(uint8_t)(c)] & (flag))
+
+static const char *reserved_names[] = 
+{ "AUX", "CON",
+  "COM1", "COM2", "COM3", "COM4", "COM5", "COM6", "COM7", "COM8", "COM9",
+  "LPT1", "LPT2", "LPT3", "LPT4", "LPT5", "LPT6", "LPT7", "LPT8", "LPT9",
+  "NUL", "PRN", NULL };
+
+
+struct pvfs_mangle_context {
+	uint8_t char_flags[256];
+	/*
+	  this determines how many characters are used from the original
+	  filename in the 8.3 mangled name. A larger value leads to a weaker
+	  hash and more collisions.  The largest possible value is 6.
+	*/
+	int mangle_prefix;
+	uint32_t mangle_modulus;
+
+	/* we will use a very simple direct mapped prefix cache. The big
+	   advantage of this cache structure is speed and low memory usage 
+
+	   The cache is indexed by the low-order bits of the hash, and confirmed by
+	   hashing the resulting cache entry to match the known hash
+	*/
+	uint32_t cache_size;
+	char **prefix_cache;
+	uint32_t *prefix_cache_hashes;
+
+	/* this is used to reverse the base 36 mapping */
+	unsigned char base_reverse[256];
+};
+
+
+/* 
+   hash a string of the specified length. The string does not need to be
+   null terminated 
+
+   this hash needs to be fast with a low collision rate (what hash doesn't?)
+*/
+static uint32_t mangle_hash(struct pvfs_mangle_context *ctx,
+			    const char *key, size_t length)
+{
+	return pvfs_name_hash(key, length) % ctx->mangle_modulus;
+}
+
+/*
+  insert an entry into the prefix cache. The string might not be null
+  terminated */
+static void cache_insert(struct pvfs_mangle_context *ctx,
+			 const char *prefix, int length, uint32_t hash)
+{
+	int i = hash % ctx->cache_size;
+
+	if (ctx->prefix_cache[i]) {
+		talloc_free(ctx->prefix_cache[i]);
+	}
+
+	ctx->prefix_cache[i] = talloc_strndup(ctx->prefix_cache, prefix, length);
+	ctx->prefix_cache_hashes[i] = hash;
+}
+
+/*
+  lookup an entry in the prefix cache. Return NULL if not found.
+*/
+static const char *cache_lookup(struct pvfs_mangle_context *ctx, uint32_t hash)
+{
+	int i = hash % ctx->cache_size;
+
+
+	if (!ctx->prefix_cache[i] || hash != ctx->prefix_cache_hashes[i]) {
+		return NULL;
+	}
+
+	/* yep, it matched */
+	return ctx->prefix_cache[i];
+}
+
+
+/* 
+   determine if a string is possibly in a mangled format, ignoring
+   case 
+
+   In this algorithm, mangled names use only pure ascii characters (no
+   multi-byte) so we can avoid doing a UCS2 conversion 
+ */
+static bool is_mangled_component(struct pvfs_mangle_context *ctx,
+				 const char *name, size_t len)
+{
+	unsigned int i;
+
+	M_DEBUG(10,("is_mangled_component %s (len %u) ?\n", name, (unsigned int)len));
+
+	/* check the length */
+	if (len > 12 || len < 8)
+		return false;
+
+	/* the best distinguishing characteristic is the ~ */
+	if (name[6] != '~')
+		return false;
+
+	/* check extension */
+	if (len > 8) {
+		if (name[8] != '.')
+			return false;
+		for (i=9; name[i] && i < len; i++) {
+			if (! FLAG_CHECK(name[i], FLAG_ASCII)) {
+				return false;
+			}
+		}
+	}
+	
+	/* check lead characters */
+	for (i=0;i<ctx->mangle_prefix;i++) {
+		if (! FLAG_CHECK(name[i], FLAG_ASCII)) {
+			return false;
+		}
+	}
+	
+	/* check rest of hash */
+	if (! FLAG_CHECK(name[7], FLAG_BASECHAR)) {
+		return false;
+	}
+	for (i=ctx->mangle_prefix;i<6;i++) {
+		if (! FLAG_CHECK(name[i], FLAG_BASECHAR)) {
+			return false;
+		}
+	}
+
+	M_DEBUG(10,("is_mangled_component %s (len %u) -> yes\n", name, (unsigned int)len));
+
+	return true;
+}
+
+
+
+/* 
+   determine if a string is possibly in a mangled format, ignoring
+   case 
+
+   In this algorithm, mangled names use only pure ascii characters (no
+   multi-byte) so we can avoid doing a UCS2 conversion 
+
+   NOTE! This interface must be able to handle a path with unix
+   directory separators. It should return true if any component is
+   mangled
+ */
+static bool is_mangled(struct pvfs_mangle_context *ctx, const char *name)
+{
+	const char *p;
+	const char *s;
+
+	M_DEBUG(10,("is_mangled %s ?\n", name));
+
+	for (s=name; (p=strchr(s, '/')); s=p+1) {
+		if (is_mangled_component(ctx, s, PTR_DIFF(p, s))) {
+			return true;
+		}
+	}
+	
+	/* and the last part ... */
+	return is_mangled_component(ctx, s, strlen(s));
+}
+
+
+/* 
+   see if a filename is an allowable 8.3 name.
+
+   we are only going to allow ascii characters in 8.3 names, as this
+   simplifies things greatly (it means that we know the string won't
+   get larger when converted from UNIX to DOS formats)
+*/
+static bool is_8_3(struct pvfs_mangle_context *ctx,
+		   const char *name, bool check_case, bool allow_wildcards)
+{
+	int len, i;
+	char *dot_p;
+
+	/* as a special case, the names '.' and '..' are allowable 8.3 names */
+	if (name[0] == '.') {
+		if (!name[1] || (name[1] == '.' && !name[2])) {
+			return true;
+		}
+	}
+
+	/* the simplest test is on the overall length of the
+	 filename. Note that we deliberately use the ascii string
+	 length (not the multi-byte one) as it is faster, and gives us
+	 the result we need in this case. Using strlen_m would not
+	 only be slower, it would be incorrect */
+	len = strlen(name);
+	if (len > 12)
+		return false;
+
+	/* find the '.'. Note that once again we use the non-multibyte
+           function */
+	dot_p = strchr(name, '.');
+
+	if (!dot_p) {
+		/* if the name doesn't contain a '.' then its length
+                   must be less than 8 */
+		if (len > 8) {
+			return false;
+		}
+	} else {
+		int prefix_len, suffix_len;
+
+		/* if it does contain a dot then the prefix must be <=
+		   8 and the suffix <= 3 in length */
+		prefix_len = PTR_DIFF(dot_p, name);
+		suffix_len = len - (prefix_len+1);
+
+		if (prefix_len > 8 || suffix_len > 3 || suffix_len == 0) {
+			return false;
+		}
+
+		/* a 8.3 name cannot contain more than 1 '.' */
+		if (strchr(dot_p+1, '.')) {
+			return false;
+		}
+	}
+
+	/* the length are all OK. Now check to see if the characters themselves are OK */
+	for (i=0; name[i]; i++) {
+		/* note that we may allow wildcard petterns! */
+		if (!FLAG_CHECK(name[i], FLAG_ASCII|(allow_wildcards ? FLAG_WILDCARD : 0)) && 
+		    name[i] != '.') {
+			return false;
+		}
+	}
+
+	/* it is a good 8.3 name */
+	return true;
+}
+
+
+/*
+  try to find a 8.3 name in the cache, and if found then
+  return the original long name. 
+*/
+static char *check_cache(struct pvfs_mangle_context *ctx, 
+			 TALLOC_CTX *mem_ctx, const char *name)
+{
+	uint32_t hash, multiplier;
+	unsigned int i;
+	const char *prefix;
+	char extension[4];
+
+	/* make sure that this is a mangled name from this cache */
+	if (!is_mangled(ctx, name)) {
+		M_DEBUG(10,("check_cache: %s -> not mangled\n", name));
+		return NULL;
+	}
+
+	/* we need to extract the hash from the 8.3 name */
+	hash = ctx->base_reverse[(unsigned char)name[7]];
+	for (multiplier=36, i=5;i>=ctx->mangle_prefix;i--) {
+		uint32_t v = ctx->base_reverse[(unsigned char)name[i]];
+		hash += multiplier * v;
+		multiplier *= 36;
+	}
+
+	/* now look in the prefix cache for that hash */
+	prefix = cache_lookup(ctx, hash);
+	if (!prefix) {
+		M_DEBUG(10,("check_cache: %s -> %08X -> not found\n", name, hash));
+		return NULL;
+	}
+
+	/* we found it - construct the full name */
+	if (name[8] == '.') {
+		strncpy(extension, name+9, 3);
+		extension[3] = 0;
+	} else {
+		extension[0] = 0;
+	}
+
+	if (extension[0]) {
+		return talloc_asprintf(mem_ctx, "%s.%s", prefix, extension);
+	}
+
+	return talloc_strdup(mem_ctx, prefix);
+}
+
+
+/*
+  look for a DOS reserved name
+*/
+static bool is_reserved_name(struct pvfs_mangle_context *ctx, const char *name)
+{
+	if (FLAG_CHECK(name[0], FLAG_POSSIBLE1) &&
+	    FLAG_CHECK(name[1], FLAG_POSSIBLE2) &&
+	    FLAG_CHECK(name[2], FLAG_POSSIBLE3) &&
+	    FLAG_CHECK(name[3], FLAG_POSSIBLE4)) {
+		/* a likely match, scan the lot */
+		int i;
+		for (i=0; reserved_names[i]; i++) {
+			if (strcasecmp(name, reserved_names[i]) == 0) {
+				return true;
+			}
+		}
+	}
+
+	return false;
+}
+
+
+/*
+ See if a filename is a legal long filename.
+ A filename ending in a '.' is not legal unless it's "." or "..". JRA.
+*/
+static bool is_legal_name(struct pvfs_mangle_context *ctx, const char *name)
+{
+	while (*name) {
+		size_t c_size;
+		codepoint_t c = next_codepoint(name, &c_size);
+		if (c == INVALID_CODEPOINT) {
+			return false;
+		}
+		/* all high chars are OK */
+		if (c >= 128) {
+			name += c_size;
+			continue;
+		}
+		if (FLAG_CHECK(c, FLAG_ILLEGAL)) {
+			return false;
+		}
+		name += c_size;
+	}
+
+	return true;
+}
+
+/*
+  the main forward mapping function, which converts a long filename to 
+  a 8.3 name
+
+  if need83 is not set then we only do the mangling if the name is illegal
+  as a long name
+
+  if cache83 is not set then we don't cache the result
+
+  return NULL if we don't need to do any conversion
+*/
+static char *name_map(struct pvfs_mangle_context *ctx,
+		      const char *name, bool need83, bool cache83)
+{
+	char *dot_p;
+	char lead_chars[7];
+	char extension[4];
+	unsigned int extension_length, i;
+	unsigned int prefix_len;
+	uint32_t hash, v;
+	char *new_name;
+	const char *basechars = MANGLE_BASECHARS;
+
+	/* reserved names are handled specially */
+	if (!is_reserved_name(ctx, name)) {
+		/* if the name is already a valid 8.3 name then we don't need to 
+		   do anything */
+		if (is_8_3(ctx, name, false, false)) {
+			return NULL;
+		}
+
+		/* if the caller doesn't strictly need 8.3 then just check for illegal 
+		   filenames */
+		if (!need83 && is_legal_name(ctx, name)) {
+			return NULL;
+		}
+	}
+
+	/* find the '.' if any */
+	dot_p = strrchr(name, '.');
+
+	if (dot_p) {
+		/* if the extension contains any illegal characters or
+		   is too long or zero length then we treat it as part
+		   of the prefix */
+		for (i=0; i<4 && dot_p[i+1]; i++) {
+			if (! FLAG_CHECK(dot_p[i+1], FLAG_ASCII)) {
+				dot_p = NULL;
+				break;
+			}
+		}
+		if (i == 0 || i == 4) dot_p = NULL;
+	}
+
+	/* the leading characters in the mangled name is taken from
+	   the first characters of the name, if they are ascii otherwise
+	   '_' is used
+	*/
+	for (i=0;i<ctx->mangle_prefix && name[i];i++) {
+		lead_chars[i] = name[i];
+		if (! FLAG_CHECK(lead_chars[i], FLAG_ASCII)) {
+			lead_chars[i] = '_';
+		}
+		lead_chars[i] = toupper((unsigned char)lead_chars[i]);
+	}
+	for (;i<ctx->mangle_prefix;i++) {
+		lead_chars[i] = '_';
+	}
+
+	/* the prefix is anything up to the first dot */
+	if (dot_p) {
+		prefix_len = PTR_DIFF(dot_p, name);
+	} else {
+		prefix_len = strlen(name);
+	}
+
+	/* the extension of the mangled name is taken from the first 3
+	   ascii chars after the dot */
+	extension_length = 0;
+	if (dot_p) {
+		for (i=1; extension_length < 3 && dot_p[i]; i++) {
+			unsigned char c = dot_p[i];
+			if (FLAG_CHECK(c, FLAG_ASCII)) {
+				extension[extension_length++] = toupper(c);
+			}
+		}
+	}
+	   
+	/* find the hash for this prefix */
+	v = hash = mangle_hash(ctx, name, prefix_len);
+
+	new_name = talloc_array(ctx, char, 13);
+	if (new_name == NULL) {
+		return NULL;
+	}
+
+	/* now form the mangled name. */
+	for (i=0;i<ctx->mangle_prefix;i++) {
+		new_name[i] = lead_chars[i];
+	}
+	new_name[7] = basechars[v % 36];
+	new_name[6] = '~';	
+	for (i=5; i>=ctx->mangle_prefix; i--) {
+		v = v / 36;
+		new_name[i] = basechars[v % 36];
+	}
+
+	/* add the extension */
+	if (extension_length) {
+		new_name[8] = '.';
+		memcpy(&new_name[9], extension, extension_length);
+		new_name[9+extension_length] = 0;
+	} else {
+		new_name[8] = 0;
+	}
+
+	if (cache83) {
+		/* put it in the cache */
+		cache_insert(ctx, name, prefix_len, hash);
+	}
+
+	M_DEBUG(10,("name_map: %s -> %08X -> %s (cache=%d)\n", 
+		   name, hash, new_name, cache83));
+
+	return new_name;
+}
+
+
+/* initialise the flags table 
+
+  we allow only a very restricted set of characters as 'ascii' in this
+  mangling backend. This isn't a significant problem as modern clients
+  use the 'long' filenames anyway, and those don't have these
+  restrictions. 
+*/
+static void init_tables(struct pvfs_mangle_context *ctx)
+{
+	const char *basechars = MANGLE_BASECHARS;
+	int i;
+	/* the list of reserved dos names - all of these are illegal */
+
+	ZERO_STRUCT(ctx->char_flags);
+
+	for (i=1;i<128;i++) {
+		if ((i >= '0' && i <= '9') || 
+		    (i >= 'a' && i <= 'z') || 
+		    (i >= 'A' && i <= 'Z')) {
+			ctx->char_flags[i] |=  (FLAG_ASCII | FLAG_BASECHAR);
+		}
+		if (strchr("_-$~", i)) {
+			ctx->char_flags[i] |= FLAG_ASCII;
+		}
+
+		if (strchr("*\\/?<>|\":", i)) {
+			ctx->char_flags[i] |= FLAG_ILLEGAL;
+		}
+
+		if (strchr("*?\"<>", i)) {
+			ctx->char_flags[i] |= FLAG_WILDCARD;
+		}
+	}
+
+	ZERO_STRUCT(ctx->base_reverse);
+	for (i=0;i<36;i++) {
+		ctx->base_reverse[(uint8_t)basechars[i]] = i;
+	}	
+
+	/* fill in the reserved names flags. These are used as a very
+	   fast filter for finding possible DOS reserved filenames */
+	for (i=0; reserved_names[i]; i++) {
+		unsigned char c1, c2, c3, c4;
+
+		c1 = (unsigned char)reserved_names[i][0];
+		c2 = (unsigned char)reserved_names[i][1];
+		c3 = (unsigned char)reserved_names[i][2];
+		c4 = (unsigned char)reserved_names[i][3];
+
+		ctx->char_flags[c1] |= FLAG_POSSIBLE1;
+		ctx->char_flags[c2] |= FLAG_POSSIBLE2;
+		ctx->char_flags[c3] |= FLAG_POSSIBLE3;
+		ctx->char_flags[c4] |= FLAG_POSSIBLE4;
+		ctx->char_flags[tolower(c1)] |= FLAG_POSSIBLE1;
+		ctx->char_flags[tolower(c2)] |= FLAG_POSSIBLE2;
+		ctx->char_flags[tolower(c3)] |= FLAG_POSSIBLE3;
+		ctx->char_flags[tolower(c4)] |= FLAG_POSSIBLE4;
+
+		ctx->char_flags[(unsigned char)'.'] |= FLAG_POSSIBLE4;
+	}
+
+	ctx->mangle_modulus = 1;
+	for (i=0;i<(7-ctx->mangle_prefix);i++) {
+		ctx->mangle_modulus *= 36;
+	}
+}
+
+/* 
+   initialise the mangling code 
+ */
+NTSTATUS pvfs_mangle_init(struct pvfs_state *pvfs)
+{
+	struct pvfs_mangle_context *ctx;
+
+	ctx = talloc(pvfs, struct pvfs_mangle_context);
+	if (ctx == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	/* by default have a max of 512 entries in the cache. */
+	ctx->cache_size = lpcfg_parm_int(pvfs->ntvfs->ctx->lp_ctx, NULL, "mangle", "cachesize", 512);
+
+	ctx->prefix_cache = talloc_array(ctx, char *, ctx->cache_size);
+	if (ctx->prefix_cache == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	ctx->prefix_cache_hashes = talloc_array(ctx, uint32_t, ctx->cache_size);
+	if (ctx->prefix_cache_hashes == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	memset(ctx->prefix_cache, 0, sizeof(char *) * ctx->cache_size);
+	memset(ctx->prefix_cache_hashes, 0, sizeof(uint32_t) * ctx->cache_size);
+
+	ctx->mangle_prefix = lpcfg_parm_int(pvfs->ntvfs->ctx->lp_ctx, NULL, "mangle", "prefix", -1);
+	if (ctx->mangle_prefix < 0 || ctx->mangle_prefix > 6) {
+		ctx->mangle_prefix = DEFAULT_MANGLE_PREFIX;
+	}
+
+	init_tables(ctx);
+
+	pvfs->mangle_ctx = ctx;
+
+	return NT_STATUS_OK;
+}
+
+
+/*
+  return the short name for a component of a full name
+*/
+char *pvfs_short_name_component(struct pvfs_state *pvfs, const char *name)
+{
+	return name_map(pvfs->mangle_ctx, name, true, true);
+}
+
+
+/*
+  return the short name for a given entry in a directory
+*/
+const char *pvfs_short_name(struct pvfs_state *pvfs, TALLOC_CTX *mem_ctx, 
+			    struct pvfs_filename *name)
+{
+	char *p = strrchr(name->full_name, '/');
+	char *ret = pvfs_short_name_component(pvfs, p+1);
+	if (ret == NULL) {
+		return p+1;
+	}
+	talloc_steal(mem_ctx, ret);
+	return ret;
+}
+
+/*
+  lookup a mangled name, returning the original long name if present
+  in the cache
+*/
+char *pvfs_mangled_lookup(struct pvfs_state *pvfs, TALLOC_CTX *mem_ctx, 
+			  const char *name)
+{
+	return check_cache(pvfs->mangle_ctx, mem_ctx, name);
+}
+
+
+/*
+  look for a DOS reserved name
+*/
+bool pvfs_is_reserved_name(struct pvfs_state *pvfs, const char *name)
+{
+	return is_reserved_name(pvfs->mangle_ctx, name);
+}
+
+
+/*
+  see if a component of a filename could be a mangled name from our
+  mangling code
+*/
+bool pvfs_is_mangled_component(struct pvfs_state *pvfs, const char *name)
+{
+	return is_mangled_component(pvfs->mangle_ctx, name, strlen(name));
+}
diff --git a/source4/ntvfs/posix/pvfs_streams.c b/source4/ntvfs/posix/pvfs_streams.c
new file mode 100644
index 0000000..9210237
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_streams.c
@@ -0,0 +1,556 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - alternate data streams
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "librpc/gen_ndr/xattr.h"
+
+/*
+  normalise a stream name, removing a :$DATA suffix if there is one 
+  Note: this returns the existing pointer to the name if the name does 
+        not need normalising
+ */
+static const char *stream_name_normalise(TALLOC_CTX *ctx, const char *name)
+{
+	const char *c = strchr_m(name, ':');
+	if (c == NULL || strcasecmp_m(c, ":$DATA") != 0) {
+		return name;
+	}
+	return talloc_strndup(ctx, name, c-name);
+}
+
+/*
+  compare two stream names, taking account of the default $DATA extension
+ */
+static int stream_name_cmp(const char *name1, const char *name2)
+{
+	const char *c1, *c2;
+	int l1, l2, ret;
+	c1 = strchr_m(name1, ':');
+	c2 = strchr_m(name2, ':');
+	
+	/* check the first part is the same */
+	l1 = c1?(c1 - name1):strlen(name1);
+	l2 = c2?(c2 - name2):strlen(name2);
+	if (l1 != l2) {
+		return l1 - l2;
+	}
+	ret = strncasecmp_m(name1, name2, l1);
+	if (ret != 0) {
+		return ret;
+	}
+
+	/* the first parts are the same, check the suffix */
+	if (c1 && c2) {
+		return strcasecmp_m(c1, c2);
+	}
+
+	if (c1) {
+		return strcasecmp_m(c1, ":$DATA");
+	}
+	if (c2) {
+		return strcasecmp_m(c2, ":$DATA");
+	}
+
+	/* neither names have a suffix */
+	return 0;
+}
+
+
+/*
+  return the list of file streams for RAW_FILEINFO_STREAM_INFORMATION
+*/
+NTSTATUS pvfs_stream_information(struct pvfs_state *pvfs, 
+				 TALLOC_CTX *mem_ctx,
+				 struct pvfs_filename *name, int fd, 
+				 struct stream_information *info)
+{
+	struct xattr_DosStreams *streams;
+	int i;
+	NTSTATUS status;
+
+	/* directories don't have streams */
+	if (name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY) {
+		info->num_streams = 0;
+		info->streams = NULL;
+		return NT_STATUS_OK;
+	}
+
+	streams = talloc(mem_ctx, struct xattr_DosStreams);
+	if (streams == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	status = pvfs_streams_load(pvfs, name, fd, streams);
+	if (!NT_STATUS_IS_OK(status)) {
+		ZERO_STRUCTP(streams);
+	}
+
+	info->num_streams = streams->num_streams+1;
+	info->streams = talloc_array(mem_ctx, struct stream_struct, info->num_streams);
+	if (!info->streams) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	info->streams[0].size          = name->st.st_size;
+	info->streams[0].alloc_size    = name->dos.alloc_size;
+	info->streams[0].stream_name.s = talloc_strdup(info->streams, "::$DATA");
+
+	for (i=0;i<streams->num_streams;i++) {
+		info->streams[i+1].size          = streams->streams[i].size;
+		info->streams[i+1].alloc_size    = streams->streams[i].alloc_size;
+		if (strchr(streams->streams[i].name, ':') == NULL) {
+			info->streams[i+1].stream_name.s = talloc_asprintf(streams->streams, 
+									   ":%s:$DATA",
+									   streams->streams[i].name);
+		} else {
+			info->streams[i+1].stream_name.s = talloc_strdup(streams->streams, 
+									 streams->streams[i].name);
+		}
+	}
+
+	return NT_STATUS_OK;
+}
+
+
+/*
+  fill in the stream information for a name
+*/
+NTSTATUS pvfs_stream_info(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd)
+{
+	struct xattr_DosStreams *streams;
+	int i;
+	NTSTATUS status;
+
+	/* the NULL stream always exists */
+	if (name->stream_name == NULL) {
+		name->stream_exists = true;
+		return NT_STATUS_OK;
+	}
+
+	streams = talloc(name, struct xattr_DosStreams);
+	if (streams == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	status = pvfs_streams_load(pvfs, name, fd, streams);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(streams);
+		return status;
+	}
+
+	for (i=0;i<streams->num_streams;i++) {
+		struct xattr_DosStream *s = &streams->streams[i];
+		if (stream_name_cmp(s->name, name->stream_name) == 0) {
+			name->dos.alloc_size = pvfs_round_alloc_size(pvfs, s->alloc_size);
+			name->st.st_size     = s->size;
+			name->stream_exists = true;
+			talloc_free(streams);
+			return NT_STATUS_OK;
+		}
+	}
+
+	talloc_free(streams);
+
+	name->dos.alloc_size = 0;
+	name->st.st_size     = 0;
+	name->stream_exists = false;
+
+	return NT_STATUS_OK;
+}
+
+
+/*
+  update size information for a stream
+*/
+static NTSTATUS pvfs_stream_update_size(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd,
+					off_t size)
+{
+	struct xattr_DosStreams *streams;
+	int i;
+	NTSTATUS status;
+
+	streams = talloc(name, struct xattr_DosStreams);
+	if (streams == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	status = pvfs_streams_load(pvfs, name, fd, streams);
+	if (!NT_STATUS_IS_OK(status)) {
+		ZERO_STRUCTP(streams);
+	}
+
+	for (i=0;i<streams->num_streams;i++) {
+		struct xattr_DosStream *s = &streams->streams[i];
+		if (stream_name_cmp(s->name, name->stream_name) == 0) {
+			s->size       = size;
+			s->alloc_size = pvfs_round_alloc_size(pvfs, size);
+			break;
+		}
+	}
+
+	if (i == streams->num_streams) {
+		struct xattr_DosStream *s;
+		streams->streams = talloc_realloc(streams, streams->streams, 
+						    struct xattr_DosStream,
+						    streams->num_streams+1);
+		if (streams->streams == NULL) {
+			talloc_free(streams);
+			return NT_STATUS_NO_MEMORY;
+		}
+		streams->num_streams++;
+		s = &streams->streams[i];
+		
+		s->flags      = XATTR_STREAM_FLAG_INTERNAL;
+		s->size       = size;
+		s->alloc_size = pvfs_round_alloc_size(pvfs, size);
+		s->name       = stream_name_normalise(streams, name->stream_name);
+		if (s->name == NULL) {
+			talloc_free(streams);
+			return NT_STATUS_NO_MEMORY;
+		}
+	}
+
+	status = pvfs_streams_save(pvfs, name, fd, streams);
+	talloc_free(streams);
+
+	return status;
+}
+
+
+/*
+  rename a stream
+*/
+NTSTATUS pvfs_stream_rename(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd,
+			    const char *new_name, bool overwrite)
+{
+	struct xattr_DosStreams *streams;
+	int i, found_old, found_new;
+	NTSTATUS status;
+
+	streams = talloc(name, struct xattr_DosStreams);
+	if (streams == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	new_name = stream_name_normalise(streams, new_name);
+	if (new_name == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	status = pvfs_streams_load(pvfs, name, fd, streams);
+	if (!NT_STATUS_IS_OK(status)) {
+		ZERO_STRUCTP(streams);
+	}
+
+	/* the default stream always exists */
+	if (strcmp(new_name, "") == 0 ||
+	    strcasecmp_m(new_name, ":$DATA") == 0) {
+		return NT_STATUS_OBJECT_NAME_COLLISION;		
+	}
+
+	/* try to find the old/new names in the list */
+	found_old = found_new = -1;
+	for (i=0;i<streams->num_streams;i++) {
+		struct xattr_DosStream *s = &streams->streams[i];
+		if (stream_name_cmp(s->name, new_name) == 0) {
+			found_new = i;
+		}
+		if (stream_name_cmp(s->name, name->stream_name) == 0) {
+			found_old = i;
+		}
+	}
+
+	if (found_old == -1) {
+		talloc_free(streams);
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;		
+	}
+
+	if (found_new == -1) {
+		/* a simple rename */
+		struct xattr_DosStream *s = &streams->streams[found_old];
+		s->name = new_name;
+	} else {
+		if (!overwrite) {
+			return NT_STATUS_OBJECT_NAME_COLLISION;
+		}
+		if (found_old != found_new) {
+			/* remove the old one and replace with the new one */
+			streams->streams[found_old].name = new_name;
+			memmove(&streams->streams[found_new],
+				&streams->streams[found_new+1],
+				sizeof(streams->streams[0]) *
+				(streams->num_streams - (found_new+1)));
+			streams->num_streams--;
+		}
+	}
+
+	status = pvfs_streams_save(pvfs, name, fd, streams);
+
+	if (NT_STATUS_IS_OK(status)) {
+
+		/* update the in-memory copy of the name of the open file */
+		talloc_free(name->stream_name);
+		name->stream_name = talloc_strdup(name, new_name);
+
+		talloc_free(streams);
+	}
+
+	return status;
+}
+
+
+/*
+  create the xattr for a alternate data stream
+*/
+NTSTATUS pvfs_stream_create(struct pvfs_state *pvfs, 
+			    struct pvfs_filename *name, 
+			    int fd)
+{
+	NTSTATUS status;
+	status = pvfs_xattr_create(pvfs, name->full_name, fd, 
+				   XATTR_DOSSTREAM_PREFIX, name->stream_name);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+	return pvfs_stream_update_size(pvfs, name, fd, 0);
+}
+
+/*
+  delete the xattr for a alternate data stream
+*/
+NTSTATUS pvfs_stream_delete(struct pvfs_state *pvfs, 
+			    struct pvfs_filename *name, 
+			    int fd)
+{
+	NTSTATUS status;
+	struct xattr_DosStreams *streams;
+	int i;
+
+	status = pvfs_xattr_delete(pvfs, name->full_name, fd, 
+				   XATTR_DOSSTREAM_PREFIX, name->stream_name);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	streams = talloc(name, struct xattr_DosStreams);
+	if (streams == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	status = pvfs_streams_load(pvfs, name, fd, streams);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(streams);
+		return status;
+	}
+
+	for (i=0;i<streams->num_streams;i++) {
+		struct xattr_DosStream *s = &streams->streams[i];
+		if (stream_name_cmp(s->name, name->stream_name) == 0) {
+			memmove(s, s+1, (streams->num_streams - (i+1)) * sizeof(*s));
+			streams->num_streams--;
+			break;
+		}
+	}
+
+	status = pvfs_streams_save(pvfs, name, fd, streams);
+	talloc_free(streams);
+
+	return status;
+}
+
+/* 
+   load a stream into a blob
+*/
+static NTSTATUS pvfs_stream_load(struct pvfs_state *pvfs,
+				 TALLOC_CTX *mem_ctx,
+				 struct pvfs_filename *name,
+				 int fd,
+				 size_t estimated_size,
+				 DATA_BLOB *blob)
+{
+	NTSTATUS status;
+
+	status = pvfs_xattr_load(pvfs, mem_ctx, name->full_name, fd, 
+				 XATTR_DOSSTREAM_PREFIX,
+				 name->stream_name, estimated_size, blob);
+
+	if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
+		/* try with a case insensitive match */
+		struct xattr_DosStreams *streams;
+		int i;
+
+		streams = talloc(mem_ctx, struct xattr_DosStreams);
+		if (streams == NULL) {
+			return NT_STATUS_NO_MEMORY;
+		}
+		
+		status = pvfs_streams_load(pvfs, name, fd, streams);
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(streams);
+			return NT_STATUS_NOT_FOUND;
+		}
+		for (i=0;i<streams->num_streams;i++) {
+			struct xattr_DosStream *s = &streams->streams[i];
+			if (stream_name_cmp(s->name, name->stream_name) == 0) {
+				status = pvfs_xattr_load(pvfs, mem_ctx, name->full_name, fd, 
+							 XATTR_DOSSTREAM_PREFIX,
+							 s->name, estimated_size, blob);
+				talloc_free(streams);
+				return status;
+			}
+		}
+		talloc_free(streams);
+		return NT_STATUS_NOT_FOUND;
+	}
+	
+	return status;
+}
+
+/*
+  the equivalent of pread() on a stream
+*/
+ssize_t pvfs_stream_read(struct pvfs_state *pvfs,
+			 struct pvfs_file_handle *h, void *data, size_t count, off_t offset)
+{
+	NTSTATUS status;
+	DATA_BLOB blob;
+	if (count == 0) {
+		return 0;
+	}
+	status = pvfs_stream_load(pvfs, h, h->name, h->fd, offset+count, &blob);
+	if (!NT_STATUS_IS_OK(status)) {
+		errno = EIO;
+		return -1;
+	}
+	if (offset >= blob.length) {
+		data_blob_free(&blob);
+		return 0;
+	}
+	if (count > blob.length - offset) {
+		count = blob.length - offset;
+	}
+	memcpy(data, blob.data + offset, count);
+	data_blob_free(&blob);
+	return count;
+}
+
+
+/*
+  the equivalent of pwrite() on a stream
+*/
+ssize_t pvfs_stream_write(struct pvfs_state *pvfs,
+			  struct pvfs_file_handle *h, const void *data, size_t count, off_t offset)
+{
+	NTSTATUS status;
+	DATA_BLOB blob;
+	if (count == 0) {
+		return 0;
+	}
+
+	if (count+offset > XATTR_MAX_STREAM_SIZE) {
+		if (!pvfs->ea_db || count+offset > XATTR_MAX_STREAM_SIZE_TDB) {
+			errno = ENOSPC;
+			return -1;
+		}
+	}
+
+	/* we have to load the existing stream, then modify, then save */
+	status = pvfs_stream_load(pvfs, h, h->name, h->fd, offset+count, &blob);
+	if (!NT_STATUS_IS_OK(status)) {
+		blob = data_blob(NULL, 0);
+	}
+	if (count+offset > blob.length) {
+		blob.data = talloc_realloc(blob.data, blob.data, uint8_t, count+offset);
+		if (blob.data == NULL) {
+			errno = ENOMEM;
+			return -1;
+		}
+		if (offset > blob.length) {
+			memset(blob.data+blob.length, 0, offset - blob.length);
+		}
+		blob.length = count+offset;
+	}
+	memcpy(blob.data + offset, data, count);
+
+	status = pvfs_xattr_save(pvfs, h->name->full_name, h->fd, XATTR_DOSSTREAM_PREFIX,
+				 h->name->stream_name, &blob);
+	if (!NT_STATUS_IS_OK(status)) {
+		data_blob_free(&blob);
+		/* getting this error mapping right is probably
+		   not worth it */
+		errno = ENOSPC;
+		return -1;
+	}
+
+	status = pvfs_stream_update_size(pvfs, h->name, h->fd, blob.length);
+
+	data_blob_free(&blob);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		errno = EIO;
+		return -1;
+	}
+
+	return count;
+}
+
+/*
+  the equivalent of truncate() on a stream
+*/
+NTSTATUS pvfs_stream_truncate(struct pvfs_state *pvfs,
+			      struct pvfs_filename *name, int fd, off_t length)
+{
+	NTSTATUS status;
+	DATA_BLOB blob;
+
+	if (length > XATTR_MAX_STREAM_SIZE) {
+		if (!pvfs->ea_db || length > XATTR_MAX_STREAM_SIZE_TDB) {
+			return NT_STATUS_DISK_FULL;
+		}
+	}
+
+	/* we have to load the existing stream, then modify, then save */
+	status = pvfs_stream_load(pvfs, name, name, fd, length, &blob);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+	if (length <= blob.length) {
+		blob.length = length;
+	} else if (length > blob.length) {
+		blob.data = talloc_realloc(blob.data, blob.data, uint8_t, length);
+		if (blob.data == NULL) {
+			return NT_STATUS_NO_MEMORY;
+		}
+		memset(blob.data+blob.length, 0, length - blob.length);
+		blob.length = length;
+	}
+
+	status = pvfs_xattr_save(pvfs, name->full_name, fd, XATTR_DOSSTREAM_PREFIX,
+				 name->stream_name, &blob);
+
+	if (NT_STATUS_IS_OK(status)) {
+		status = pvfs_stream_update_size(pvfs, name, fd, blob.length);
+	}
+	data_blob_free(&blob);
+
+	return status;
+}
diff --git a/source4/ntvfs/posix/pvfs_sys.c b/source4/ntvfs/posix/pvfs_sys.c
new file mode 100644
index 0000000..32770c1
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_sys.c
@@ -0,0 +1,662 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - pvfs_sys wrappers
+
+   Copyright (C) Andrew Tridgell 2010
+   Copyright (C) Andrew Bartlett 2010
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "../lib/util/unix_privs.h"
+
+/*
+  these wrapper functions must only be called when the appropriate ACL
+  has already been checked. The wrappers will override a EACCES result
+  by gaining root privileges if the 'pvfs:perm override' is set on the
+  share (it is enabled by default)
+
+  Careful use of O_NOFOLLOW and O_DIRECTORY is used to prevent
+  security attacks via symlinks
+ */
+
+
+struct pvfs_sys_ctx {
+	struct pvfs_state *pvfs;
+	void *privs;
+	const char *old_wd;
+	struct stat st_orig;
+};
+
+
+/*
+  we create PVFS_NOFOLLOW and PVFS_DIRECTORY as aliases for O_NOFOLLOW
+  and O_DIRECTORY on systems that have them. On systems that don't
+  have O_NOFOLLOW we are less safe, but the root override code is off
+  by default.
+ */
+#ifdef O_NOFOLLOW
+#define PVFS_NOFOLLOW O_NOFOLLOW
+#else
+#define PVFS_NOFOLLOW 0
+#endif
+#ifdef O_DIRECTORY
+#define PVFS_DIRECTORY O_DIRECTORY
+#else
+#define PVFS_DIRECTORY 0
+#endif
+
+/*
+  return to original directory when context is destroyed
+ */
+static int pvfs_sys_pushdir_destructor(struct pvfs_sys_ctx *ctx)
+{
+	struct stat st;
+
+	if (ctx->old_wd == NULL) {
+		return 0;
+	}
+
+	if (chdir(ctx->old_wd) != 0) {
+		smb_panic("Failed to restore working directory");
+	}
+	if (stat(".", &st) != 0) {
+		smb_panic("Failed to stat working directory");
+	}
+	if (st.st_ino != ctx->st_orig.st_ino ||
+	    st.st_dev != ctx->st_orig.st_dev) {
+		smb_panic("Working directory changed during call");
+	}
+
+	return 0;
+}
+
+
+/*
+  chdir() to the directory part of a pathname, but disallow any
+  component with a symlink
+
+  Note that we can't use O_NOFOLLOW on the whole path as that only
+  prevents links in the final component of the path
+ */
+static int pvfs_sys_chdir_nosymlink(struct pvfs_sys_ctx *ctx, const char *pathname)
+{
+	char *p, *path;
+	size_t base_len = strlen(ctx->pvfs->base_directory);
+
+	/* don't check for symlinks in the base directory of the share */
+	if (strncmp(ctx->pvfs->base_directory, pathname, base_len) == 0 &&
+	    pathname[base_len] == '/') {
+		if (chdir(ctx->pvfs->base_directory) != 0) {
+			return -1;
+		}
+		pathname += base_len + 1;
+	}
+
+	path = talloc_strdup(ctx, pathname);
+	if (path == NULL) {
+		return -1;
+	}
+	while ((p = strchr(path, '/'))) {
+		int fd;
+		struct stat st1, st2;
+		*p = 0;
+		fd = open(path, PVFS_NOFOLLOW | PVFS_DIRECTORY | O_RDONLY);
+		if (fd == -1) {
+			return -1;
+		}
+		if (chdir(path) != 0) {
+			close(fd);
+			return -1;
+		}
+		if (stat(".", &st1) != 0 ||
+		    fstat(fd, &st2) != 0) {
+			close(fd);
+			return -1;
+		}
+		close(fd);
+		if (st1.st_ino != st2.st_ino ||
+		    st1.st_dev != st2.st_dev) {
+			DEBUG(0,(__location__ ": Inode changed during chdir in '%s' - symlink attack?\n",
+				 pathname));
+			return -1;
+		}
+		path = p + 1;
+	}
+
+	return 0;
+}
+
+
+/*
+  become root, and change directory to the directory component of a
+  path. Return a talloc context which when freed will move us back
+  to the original directory, and return us to the original uid
+
+  change the pathname argument to contain just the base component of
+  the path
+
+  return NULL on error, which could include an attempt to subvert
+  security using symlink tricks
+ */
+static struct pvfs_sys_ctx *pvfs_sys_pushdir(struct pvfs_state *pvfs,
+					     const char **pathname)
+{
+	struct pvfs_sys_ctx *ctx;
+	char *cwd, *p, *dirname;
+	int ret;
+
+	ctx = talloc_zero(pvfs, struct pvfs_sys_ctx);
+	if (ctx == NULL) {
+		return NULL;
+	}
+	ctx->pvfs = pvfs;
+	ctx->privs = root_privileges();
+	if (ctx->privs == NULL) {
+		talloc_free(ctx);
+		return NULL;
+	}
+
+	talloc_steal(ctx, ctx->privs);
+
+	if (!pathname) {
+		/* no pathname needed */
+		return ctx;
+	}
+
+	p = strrchr(*pathname, '/');
+	if (p == NULL) {
+		/* we don't need to change directory */
+		return ctx;
+	}
+
+	/* we keep the old st around, so we can tell that
+	   we have come back to the right directory */
+	if (stat(".", &ctx->st_orig) != 0) {
+		talloc_free(ctx);
+		return NULL;
+	}
+
+	cwd = get_current_dir_name();
+	if (cwd == NULL) {
+		talloc_free(ctx);
+		return NULL;
+	}
+
+	ctx->old_wd = talloc_strdup(ctx, cwd);
+	free(cwd);
+
+	if (ctx->old_wd == NULL) {
+		talloc_free(ctx);
+		return NULL;
+	}
+
+	dirname = talloc_strndup(ctx, *pathname, (p - *pathname));
+	if (dirname == NULL) {
+		talloc_free(ctx);
+		return NULL;
+	}
+
+	ret = pvfs_sys_chdir_nosymlink(ctx, *pathname);
+	if (ret == -1) {
+		talloc_free(ctx);
+		return NULL;
+	}
+
+	talloc_set_destructor(ctx, pvfs_sys_pushdir_destructor);
+
+	/* return the basename as the filename that should be operated on */
+	(*pathname) = talloc_strdup(ctx, p+1);
+	if (! *pathname) {
+		talloc_free(ctx);
+		return NULL;
+	}
+
+	return ctx;
+}
+
+
+/*
+  chown a file that we created with a root privileges override
+ */
+static int pvfs_sys_fchown(struct pvfs_state *pvfs, struct pvfs_sys_ctx *ctx, int fd)
+{
+	return fchown(fd, root_privileges_original_uid(ctx->privs), -1);
+}
+
+/*
+  chown a directory that we created with a root privileges override
+ */
+static int pvfs_sys_chown(struct pvfs_state *pvfs, struct pvfs_sys_ctx *ctx, const char *name)
+{
+	/* to avoid symlink hacks, we need to use fchown() on a directory fd */
+	int ret, fd;
+	fd = open(name, PVFS_DIRECTORY | PVFS_NOFOLLOW | O_RDONLY);
+	if (fd == -1) {
+		return -1;
+	}
+	ret = pvfs_sys_fchown(pvfs, ctx, fd);
+	close(fd);
+	return ret;
+}
+
+
+/*
+  wrap open for system override
+*/
+int pvfs_sys_open(struct pvfs_state *pvfs, const char *filename, int flags, mode_t mode, bool allow_override)
+{
+	int fd, ret;
+	struct pvfs_sys_ctx *ctx;
+	int saved_errno, orig_errno;
+	int retries = 5;
+
+	orig_errno = errno;
+
+	fd = open(filename, flags, mode);
+	if (fd != -1 ||
+	    !allow_override ||
+	    errno != EACCES) {
+		return fd;
+	}
+
+	saved_errno = errno;
+	ctx = pvfs_sys_pushdir(pvfs, &filename);
+	if (ctx == NULL) {
+		errno = saved_errno;
+		return -1;
+	}
+
+	/* don't allow permission overrides to follow links */
+	flags |= PVFS_NOFOLLOW;
+
+	/*
+	   if O_CREAT was specified and O_EXCL was not specified
+	   then initially do the open without O_CREAT, as in that case
+	   we know that we did not create the file, so we don't have
+	   to fchown it
+	 */
+	if ((flags & O_CREAT) && !(flags & O_EXCL)) {
+	try_again:
+		fd = open(filename, flags & ~O_CREAT, mode);
+		/* if this open succeeded, or if it failed
+		   with anything other than ENOENT, then we return the
+		   open result, with the original errno */
+		if (fd == -1 && errno != ENOENT) {
+			talloc_free(ctx);
+			errno = saved_errno;
+			return -1;
+		}
+		if (fd != -1) {
+			/* the file already existed and we opened it */
+			talloc_free(ctx);
+			errno = orig_errno;
+			return fd;
+		}
+
+		fd = open(filename, flags | O_EXCL, mode);
+		if (fd == -1 && errno != EEXIST) {
+			talloc_free(ctx);
+			errno = saved_errno;
+			return -1;
+		}
+		if (fd != -1) {
+			/* we created the file, we need to set the
+			   right ownership on it */
+			ret = pvfs_sys_fchown(pvfs, ctx, fd);
+			if (ret == -1) {
+				close(fd);
+				unlink(filename);
+				talloc_free(ctx);
+				errno = saved_errno;
+				return -1;
+			}
+			talloc_free(ctx);
+			errno = orig_errno;
+			return fd;
+		}
+
+		/* the file got created between the two times
+		   we tried to open it! Try again */
+		if (retries-- > 0) {
+			goto try_again;
+		}
+
+		talloc_free(ctx);
+		errno = saved_errno;
+		return -1;
+	}
+
+	fd = open(filename, flags, mode);
+	if (fd == -1) {
+		talloc_free(ctx);
+		errno = saved_errno;
+		return -1;
+	}
+
+	/* if we have created a file then fchown it */
+	if (flags & O_CREAT) {
+		ret = pvfs_sys_fchown(pvfs, ctx, fd);
+		if (ret == -1) {
+			close(fd);
+			unlink(filename);
+			talloc_free(ctx);
+			errno = saved_errno;
+			return -1;
+		}
+	}
+
+	talloc_free(ctx);
+	return fd;
+}
+
+
+/*
+  wrap unlink for system override
+*/
+int pvfs_sys_unlink(struct pvfs_state *pvfs, const char *filename, bool allow_override)
+{
+	int ret;
+	struct pvfs_sys_ctx *ctx;
+	int saved_errno, orig_errno;
+
+	orig_errno = errno;
+
+	ret = unlink(filename);
+	if (ret != -1 ||
+	    !allow_override ||
+	    errno != EACCES) {
+		return ret;
+	}
+
+	saved_errno = errno;
+
+	ctx = pvfs_sys_pushdir(pvfs, &filename);
+	if (ctx == NULL) {
+		errno = saved_errno;
+		return -1;
+	}
+
+	ret = unlink(filename);
+	if (ret == -1) {
+		talloc_free(ctx);
+		errno = saved_errno;
+		return -1;
+	}
+
+	talloc_free(ctx);
+	errno = orig_errno;
+	return ret;
+}
+
+
+static bool contains_symlink(const char *path)
+{
+	int fd = open(path, PVFS_NOFOLLOW | O_RDONLY);
+	int posix_errno = errno;
+	if (fd != -1) {
+		close(fd);
+		return false;
+	}
+
+#if defined(ENOTSUP) && defined(OSF1)
+	/* handle special Tru64 errno */
+	if (errno == ENOTSUP) {
+		posix_errno = ELOOP;
+	}
+#endif /* ENOTSUP */
+
+#ifdef EFTYPE
+	/* fix broken NetBSD errno */
+	if (errno == EFTYPE) {
+		posix_errno = ELOOP;
+	}
+#endif /* EFTYPE */
+
+	/* fix broken FreeBSD errno */
+	if (errno == EMLINK) {
+		posix_errno = ELOOP;
+	}
+
+	return (posix_errno == ELOOP);
+}
+
+/*
+  wrap rename for system override
+*/
+int pvfs_sys_rename(struct pvfs_state *pvfs, const char *name1, const char *name2, bool allow_override)
+{
+	int ret;
+	struct pvfs_sys_ctx *ctx;
+	int saved_errno, orig_errno;
+
+	orig_errno = errno;
+
+	ret = rename(name1, name2);
+	if (ret != -1 ||
+	    !allow_override ||
+	    errno != EACCES) {
+		return ret;
+	}
+
+	saved_errno = errno;
+
+	ctx = pvfs_sys_pushdir(pvfs, &name1);
+	if (ctx == NULL) {
+		errno = saved_errno;
+		return -1;
+	}
+
+	/* we need the destination as an absolute path */
+	if (name2[0] != '/') {
+		name2 = talloc_asprintf(ctx, "%s/%s", ctx->old_wd, name2);
+		if (name2 == NULL) {
+			talloc_free(ctx);
+			errno = saved_errno;
+			return -1;
+		}
+	}
+
+	/* make sure the destination isn't a symlink beforehand */
+	if (contains_symlink(name2)) {
+		talloc_free(ctx);
+		errno = saved_errno;
+		return -1;
+	}
+
+	ret = rename(name1, name2);
+	if (ret == -1) {
+		talloc_free(ctx);
+		errno = saved_errno;
+		return -1;
+	}
+
+	/* make sure the destination isn't a symlink afterwards */
+	if (contains_symlink(name2)) {
+		DEBUG(0,(__location__ ": Possible symlink attack in rename to '%s' - unlinking\n", name2));
+		unlink(name2);
+		talloc_free(ctx);
+		errno = saved_errno;
+		return -1;
+	}
+
+	talloc_free(ctx);
+	errno = orig_errno;
+	return ret;
+}
+
+
+/*
+  wrap mkdir for system override
+*/
+int pvfs_sys_mkdir(struct pvfs_state *pvfs, const char *dirname, mode_t mode, bool allow_override)
+{
+	int ret;
+	struct pvfs_sys_ctx *ctx;
+	int saved_errno, orig_errno;
+
+	orig_errno = errno;
+
+	ret = mkdir(dirname, mode);
+	if (ret != -1 ||
+	    !allow_override ||
+	    errno != EACCES) {
+		return ret;
+	}
+
+	saved_errno = errno;
+	ctx = pvfs_sys_pushdir(pvfs, &dirname);
+	if (ctx == NULL) {
+		errno = saved_errno;
+		return -1;
+	}
+
+	ret = mkdir(dirname, mode);
+	if (ret == -1) {
+		talloc_free(ctx);
+		errno = saved_errno;
+		return -1;
+	}
+
+	ret = pvfs_sys_chown(pvfs, ctx, dirname);
+	if (ret == -1) {
+		rmdir(dirname);
+		talloc_free(ctx);
+		errno = saved_errno;
+		return -1;
+	}
+
+	talloc_free(ctx);
+	errno = orig_errno;
+	return ret;
+}
+
+
+/*
+  wrap rmdir for system override
+*/
+int pvfs_sys_rmdir(struct pvfs_state *pvfs, const char *dirname, bool allow_override)
+{
+	int ret;
+	struct pvfs_sys_ctx *ctx;
+	int saved_errno, orig_errno;
+
+	orig_errno = errno;
+
+	ret = rmdir(dirname);
+	if (ret != -1 ||
+	    !allow_override ||
+	    errno != EACCES) {
+		return ret;
+	}
+
+	saved_errno = errno;
+
+	ctx = pvfs_sys_pushdir(pvfs, &dirname);
+	if (ctx == NULL) {
+		errno = saved_errno;
+		return -1;
+	}
+
+	ret = rmdir(dirname);
+	if (ret == -1) {
+		talloc_free(ctx);
+		errno = saved_errno;
+		return -1;
+	}
+
+	talloc_free(ctx);
+	errno = orig_errno;
+	return ret;
+}
+
+/*
+  wrap fchmod for system override
+*/
+int pvfs_sys_fchmod(struct pvfs_state *pvfs, int fd, mode_t mode, bool allow_override)
+{
+	int ret;
+	struct pvfs_sys_ctx *ctx;
+	int saved_errno, orig_errno;
+
+	orig_errno = errno;
+
+	ret = fchmod(fd, mode);
+	if (ret != -1 ||
+	    !allow_override ||
+	    errno != EACCES) {
+		return ret;
+	}
+
+	saved_errno = errno;
+
+	ctx = pvfs_sys_pushdir(pvfs, NULL);
+	if (ctx == NULL) {
+		errno = saved_errno;
+		return -1;
+	}
+
+	ret = fchmod(fd, mode);
+	if (ret == -1) {
+		talloc_free(ctx);
+		errno = saved_errno;
+		return -1;
+	}
+
+	talloc_free(ctx);
+	errno = orig_errno;
+	return ret;
+}
+
+
+/*
+  wrap chmod for system override
+*/
+int pvfs_sys_chmod(struct pvfs_state *pvfs, const char *filename, mode_t mode, bool allow_override)
+{
+	int ret;
+	struct pvfs_sys_ctx *ctx;
+	int saved_errno, orig_errno;
+
+	orig_errno = errno;
+
+	ret = chmod(filename, mode);
+	if (ret != -1 ||
+	    !allow_override ||
+	    errno != EACCES) {
+		return ret;
+	}
+
+	saved_errno = errno;
+
+	ctx = pvfs_sys_pushdir(pvfs, &filename);
+	if (ctx == NULL) {
+		errno = saved_errno;
+		return -1;
+	}
+
+	ret = chmod(filename, mode);
+	if (ret == -1) {
+		talloc_free(ctx);
+		errno = saved_errno;
+		return -1;
+	}
+
+	talloc_free(ctx);
+	errno = orig_errno;
+	return ret;
+}
diff --git a/source4/ntvfs/posix/pvfs_unlink.c b/source4/ntvfs/posix/pvfs_unlink.c
new file mode 100644
index 0000000..605ec10
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_unlink.c
@@ -0,0 +1,276 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - unlink
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "system/dir.h"
+
+/*
+  retry an open after a sharing violation
+*/
+static void pvfs_retry_unlink(struct pvfs_odb_retry *r,
+			      struct ntvfs_module_context *ntvfs,
+			      struct ntvfs_request *req,
+			      void *_io,
+			      void *private_data,
+			      enum pvfs_wait_notice reason)
+{
+	union smb_unlink *io = talloc_get_type(_io, union smb_unlink);
+	NTSTATUS status = NT_STATUS_INTERNAL_ERROR;
+
+	talloc_free(r);
+
+	switch (reason) {
+	case PVFS_WAIT_CANCEL:
+/*TODO*/
+		status = NT_STATUS_CANCELLED;
+		break;
+	case PVFS_WAIT_TIMEOUT:
+		/* if it timed out, then give the failure
+		   immediately */
+/*TODO*/
+		status = NT_STATUS_SHARING_VIOLATION;
+		break;
+	case PVFS_WAIT_EVENT:
+
+		/* try the open again, which could trigger another retry setup
+		   if it wants to, so we have to unmark the async flag so we
+		   will know if it does a second async reply */
+		req->async_states->state &= ~NTVFS_ASYNC_STATE_ASYNC;
+
+		status = pvfs_unlink(ntvfs, req, io);
+		if (req->async_states->state & NTVFS_ASYNC_STATE_ASYNC) {
+			/* the 2nd try also replied async, so we don't send
+			   the reply yet */
+			return;
+		}
+
+		/* re-mark it async, just in case someone up the chain does
+		   paranoid checking */
+		req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
+		break;
+	}
+
+	/* send the reply up the chain */
+	req->async_states->status = status;
+	req->async_states->send_fn(req);
+}
+
+/*
+  setup for a unlink retry after a sharing violation
+  or a non granted oplock
+*/
+static NTSTATUS pvfs_unlink_setup_retry(struct ntvfs_module_context *ntvfs,
+					struct ntvfs_request *req,
+					union smb_unlink *io,
+					struct odb_lock *lck,
+					NTSTATUS status)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct timeval end_time;
+
+	if (NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION)) {
+		end_time = timeval_add(&req->statistics.request_time,
+				       0, pvfs->sharing_violation_delay);
+	} else if (NT_STATUS_EQUAL(status, NT_STATUS_OPLOCK_NOT_GRANTED)) {
+		end_time = timeval_add(&req->statistics.request_time,
+				       pvfs->oplock_break_timeout, 0);
+	} else {
+		return NT_STATUS_INTERNAL_ERROR;
+	}
+
+	return pvfs_odb_retry_setup(ntvfs, req, lck, end_time, io, NULL,
+				    pvfs_retry_unlink);
+}
+
+
+/*
+  unlink a file
+*/
+static NTSTATUS pvfs_unlink_file(struct pvfs_state *pvfs,
+				 struct pvfs_filename *name)
+{
+	NTSTATUS status = NT_STATUS_OK;
+
+	if (name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY) {
+		return NT_STATUS_FILE_IS_A_DIRECTORY;
+	}
+
+	if (name->st.st_nlink == 1) {
+		status = pvfs_xattr_unlink_hook(pvfs, name->full_name);
+		if (!NT_STATUS_IS_OK(status)) {
+			return status;
+		}
+	}
+
+	/* finally try the actual unlink */
+	if (pvfs_sys_unlink(pvfs, name->full_name, name->allow_override) == -1) {
+		status = pvfs_map_errno(pvfs, errno);
+	}
+
+	if (NT_STATUS_IS_OK(status)) {
+		notify_trigger(pvfs->notify_context, 
+			       NOTIFY_ACTION_REMOVED, 
+			       FILE_NOTIFY_CHANGE_FILE_NAME,
+			       name->full_name);
+	}
+
+	return status;
+}
+
+/*
+  unlink one file
+*/
+static NTSTATUS pvfs_unlink_one(struct pvfs_state *pvfs,
+				struct ntvfs_request *req,
+				union smb_unlink *unl,
+				struct pvfs_filename *name)
+{
+	NTSTATUS status;
+	struct odb_lock *lck = NULL;
+
+	/* make sure its matches the given attributes */
+	status = pvfs_match_attrib(pvfs, name,
+				   unl->unlink.in.attrib, 0);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	status = pvfs_can_delete(pvfs, req, name, &lck);
+
+	/*
+	 * on a sharing violation we need to retry when the file is closed by
+	 * the other user, or after 1 second
+	 * on a non granted oplock we need to retry when the file is closed by
+	 * the other user, or after 30 seconds
+	 */
+	if ((NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION) ||
+	     NT_STATUS_EQUAL(status, NT_STATUS_OPLOCK_NOT_GRANTED)) &&
+	    (req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+		return pvfs_unlink_setup_retry(pvfs->ntvfs, req, unl, lck, status);
+	}
+
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	if (name->stream_name) {
+		if (!name->stream_exists) {
+			return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+		}
+
+		return pvfs_stream_delete(pvfs, name, -1);
+	}
+
+	return pvfs_unlink_file(pvfs, name);
+}
+
+/*
+  delete a file - the dirtype specifies the file types to include in the search. 
+  The name can contain CIFS wildcards, but rarely does (except with OS/2 clients)
+*/
+NTSTATUS pvfs_unlink(struct ntvfs_module_context *ntvfs,
+		     struct ntvfs_request *req,
+		     union smb_unlink *unl)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct pvfs_dir *dir;
+	NTSTATUS status;
+	uint32_t total_deleted=0;
+	struct pvfs_filename *name;
+	const char *fname;
+	off_t ofs;
+
+	/* resolve the cifs name to a posix name */
+	status = pvfs_resolve_name(pvfs, req, unl->unlink.in.pattern, 
+				   PVFS_RESOLVE_WILDCARD |
+				   PVFS_RESOLVE_STREAMS |
+				   PVFS_RESOLVE_NO_OPENDB,
+				   &name);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	if (!name->exists && !name->has_wildcard) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	if (name->exists && 
+	    (name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY)) {
+		return NT_STATUS_FILE_IS_A_DIRECTORY;
+	}
+
+	if (!name->has_wildcard) {
+		return pvfs_unlink_one(pvfs, req, unl, name);
+	}
+
+	/*
+	 * disable async requests in the wildcard case
+	 * until we have proper tests for this
+	 */
+	req->async_states->state &= ~NTVFS_ASYNC_STATE_MAY_ASYNC;
+
+	/* get list of matching files */
+	status = pvfs_list_start(pvfs, name, req, &dir);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	status = NT_STATUS_NO_SUCH_FILE;
+	talloc_free(name);
+
+	ofs = 0;
+
+	while ((fname = pvfs_list_next(dir, &ofs))) {
+		/* this seems to be a special case */
+		if ((unl->unlink.in.attrib & FILE_ATTRIBUTE_DIRECTORY) &&
+		    (ISDOT(fname) || ISDOTDOT(fname))) {
+			return NT_STATUS_OBJECT_NAME_INVALID;
+		}
+
+		/* get a pvfs_filename object */
+		status = pvfs_resolve_partial(pvfs, req,
+					      pvfs_list_unix_path(dir),
+					      fname,
+					      PVFS_RESOLVE_NO_OPENDB,
+					      &name);
+		if (!NT_STATUS_IS_OK(status)) {
+			return status;
+		}
+
+		status = pvfs_unlink_one(pvfs, req, unl, name);
+		if (NT_STATUS_IS_OK(status)) {
+			total_deleted++;
+		}
+
+		talloc_free(name);
+	}
+
+	if (total_deleted > 0) {
+		status = NT_STATUS_OK;
+	}
+
+	return status;
+}
+
+
diff --git a/source4/ntvfs/posix/pvfs_util.c b/source4/ntvfs/posix/pvfs_util.c
new file mode 100644
index 0000000..2975e04
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_util.c
@@ -0,0 +1,206 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/*
+  utility functions for posix backend
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+
+/*
+  return true if a string contains one of the CIFS wildcard characters
+*/
+bool pvfs_has_wildcard(const char *str)
+{
+	if (strpbrk(str, "*?<>\"")) {
+		return true;
+	}
+	return false;
+}
+
+/*
+  map a unix errno to a NTSTATUS
+*/
+NTSTATUS pvfs_map_errno(struct pvfs_state *pvfs, int unix_errno)
+{
+	NTSTATUS status;
+	status = map_nt_error_from_unix_common(unix_errno);
+	DEBUG(10,(__location__ " mapped unix errno %d -> %s\n", unix_errno, nt_errstr(status)));
+	return status;
+}
+
+
+/*
+  check if a filename has an attribute matching the given attribute search value
+  this is used by calls like unlink and search which take an attribute
+  and only include special files if they match the given attribute
+*/
+NTSTATUS pvfs_match_attrib(struct pvfs_state *pvfs, struct pvfs_filename *name, 
+			   uint32_t attrib, uint32_t must_attrib)
+{
+	if ((name->dos.attrib & ~attrib) & FILE_ATTRIBUTE_DIRECTORY) {
+		return NT_STATUS_FILE_IS_A_DIRECTORY;
+	}
+	if ((name->dos.attrib & ~attrib) & (FILE_ATTRIBUTE_HIDDEN|FILE_ATTRIBUTE_SYSTEM)) {
+		return NT_STATUS_NO_SUCH_FILE;
+	}
+	if (must_attrib & ~name->dos.attrib) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+	return NT_STATUS_OK;
+}
+
+
+/*
+  normalise a file attribute
+*/
+uint32_t pvfs_attrib_normalise(uint32_t attrib, mode_t mode)
+{
+	if (attrib != FILE_ATTRIBUTE_NORMAL) {
+		attrib &= ~FILE_ATTRIBUTE_NORMAL;
+	}
+	if (S_ISDIR(mode)) {
+		attrib |= FILE_ATTRIBUTE_DIRECTORY;
+	} else {
+		attrib &= ~FILE_ATTRIBUTE_DIRECTORY;
+	}
+	return attrib;
+}
+
+
+/*
+  copy a file. Caller is supposed to have already ensured that the
+  operation is allowed. The destination file must not exist.
+*/
+NTSTATUS pvfs_copy_file(struct pvfs_state *pvfs,
+			struct pvfs_filename *name1, 
+			struct pvfs_filename *name2,
+			bool allow_override)
+{
+	int fd1, fd2;
+	mode_t mode;
+	NTSTATUS status;
+	size_t buf_size = 0x10000;
+	uint8_t *buf = talloc_array(name2, uint8_t, buf_size);
+
+	if (buf == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	fd1 = pvfs_sys_open(pvfs, name1->full_name, O_RDONLY, 0, allow_override);
+	if (fd1 == -1) {
+		talloc_free(buf);
+		return pvfs_map_errno(pvfs, errno);
+	}
+
+	fd2 = pvfs_sys_open(pvfs, name2->full_name, O_CREAT|O_EXCL|O_WRONLY, 0, allow_override);
+	if (fd2 == -1) {
+		close(fd1);
+		talloc_free(buf);
+		return pvfs_map_errno(pvfs, errno);
+	}
+
+	while (1) {
+		ssize_t ret2, ret = read(fd1, buf, buf_size);
+		if (ret == -1 && 
+		    (errno == EINTR || errno == EAGAIN)) {
+			continue;
+		}
+		if (ret <= 0) break;
+
+		ret2 = write(fd2, buf, ret);
+		if (ret2 == -1 &&
+		    (errno == EINTR || errno == EAGAIN)) {
+			continue;
+		}
+		
+		if (ret2 != ret) {
+			close(fd1);
+			close(fd2);
+			talloc_free(buf);
+			pvfs_sys_unlink(pvfs, name2->full_name, allow_override);
+			if (ret2 == -1) {
+				return pvfs_map_errno(pvfs, errno);
+			}
+			return NT_STATUS_DISK_FULL;
+		}
+	}
+
+	talloc_free(buf);
+	close(fd1);
+
+	mode = pvfs_fileperms(pvfs, name1->dos.attrib);
+	if (pvfs_sys_fchmod(pvfs, fd2, mode, allow_override) == -1) {
+		status = pvfs_map_errno(pvfs, errno);
+		close(fd2);
+		pvfs_sys_unlink(pvfs, name2->full_name, allow_override);
+		return status;
+	}
+
+	name2->st.st_mode = mode;
+	name2->dos = name1->dos;
+
+	status = pvfs_dosattrib_save(pvfs, name2, fd2);
+	if (!NT_STATUS_IS_OK(status)) {
+		close(fd2);
+		pvfs_sys_unlink(pvfs, name2->full_name, allow_override);
+		return status;
+	}
+
+	close(fd2);
+
+	return NT_STATUS_OK;
+}
+
+
+/* 
+   hash a string of the specified length. The string does not need to be
+   null terminated 
+
+   hash algorithm changed to FNV1 by idra@samba.org (Simo Sorce).
+   see http://www.isthe.com/chongo/tech/comp/fnv/index.html for a
+   discussion on Fowler / Noll / Vo (FNV) Hash by one of it's authors
+*/
+uint32_t pvfs_name_hash(const char *key, size_t length)
+{
+	const uint32_t fnv1_prime = 0x01000193;
+	const uint32_t fnv1_init = 0xa6b93095;
+	uint32_t value = fnv1_init;
+
+	while (*key && length--) {
+		size_t c_size;
+		codepoint_t c = next_codepoint(key, &c_size);
+		c = toupper_m(c);
+                value *= fnv1_prime;
+                value ^= (uint32_t)c;
+		key += c_size;
+        }
+
+	return value;
+}
+
+
+/*
+  file allocation size rounding. This is required to pass ifstest
+*/
+uint64_t pvfs_round_alloc_size(struct pvfs_state *pvfs, uint64_t size)
+{
+	const uint32_t round_value = pvfs->alloc_size_rounding;
+	return round_value * ((size + round_value - 1)/round_value);
+}
diff --git a/source4/ntvfs/posix/pvfs_wait.c b/source4/ntvfs/posix/pvfs_wait.c
new file mode 100644
index 0000000..21ff33e
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_wait.c
@@ -0,0 +1,212 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - async request wait routines
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "lib/events/events.h"
+#include "../lib/util/dlinklist.h"
+#include "vfs_posix.h"
+#include "samba/service_stream.h"
+#include "lib/messaging/irpc.h"
+
+/* the context for a single wait instance */
+struct pvfs_wait {
+	struct pvfs_wait *next, *prev;
+	struct pvfs_state *pvfs;
+	void (*handler)(void *, enum pvfs_wait_notice);
+	void *private_data;
+	int msg_type;
+	struct imessaging_context *msg_ctx;
+	struct tevent_context *ev;
+	struct ntvfs_request *req;
+	enum pvfs_wait_notice reason;
+};
+
+/*
+  called from the ntvfs layer when we have requested setup of an async
+  call.  this ensures that async calls runs with the right state of
+  previous ntvfs handlers in the chain (such as security context)
+*/
+NTSTATUS pvfs_async_setup(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req, void *private_data)
+{
+	struct pvfs_wait *pwait = talloc_get_type(private_data,
+						  struct pvfs_wait);
+	pwait->handler(pwait->private_data, pwait->reason);
+	return NT_STATUS_OK;
+}
+
+/*
+  receive a completion message for a wait
+*/
+static void pvfs_wait_dispatch(struct imessaging_context *msg,
+			       void *private_data,
+			       uint32_t msg_type,
+			       struct server_id src,
+			       size_t num_fds,
+			       int *fds,
+			       DATA_BLOB *data)
+{
+	struct pvfs_wait *pwait = talloc_get_type(private_data,
+						  struct pvfs_wait);
+	struct ntvfs_request *req;
+	void *p = NULL;
+
+	if (num_fds != 0) {
+		DBG_WARNING("Received %zu fds, ignoring message\n", num_fds);
+		return;
+	}
+
+	/* we need to check that this one is for us. See
+	   imessaging_send_ptr() for the other side of this.
+	 */
+	if (data->length == sizeof(void *)) {
+		void **pp;
+		pp = (void **)data->data;
+		p = *pp;
+	}
+	if (p == NULL || p != pwait->private_data) {
+		return;
+	}
+
+	pwait->reason = PVFS_WAIT_EVENT;
+
+	/* the extra reference here is to ensure that the req
+	   structure is not destroyed when the async request reply is
+	   sent, which would cause problems with the other ntvfs
+	   modules above us */
+	req = talloc_reference(msg, pwait->req);
+	ntvfs_async_setup(pwait->req, pwait);
+	talloc_unlink(msg, req);
+}
+
+
+/*
+  receive a timeout on a message wait
+*/
+static void pvfs_wait_timeout(struct tevent_context *ev, 
+			      struct tevent_timer *te, struct timeval t,
+			      void *private_data)
+{
+	struct pvfs_wait *pwait = talloc_get_type(private_data,
+						  struct pvfs_wait);
+	struct ntvfs_request *req = pwait->req;
+
+	pwait->reason = PVFS_WAIT_TIMEOUT;
+
+	req = talloc_reference(ev, req);
+	if (req != NULL) {
+		ntvfs_async_setup(req, pwait);
+		talloc_unlink(ev, req);
+	}
+}
+
+
+/*
+  destroy a pending wait
+ */
+static int pvfs_wait_destructor(struct pvfs_wait *pwait)
+{
+	if (pwait->msg_type != -1) {
+		imessaging_deregister(pwait->msg_ctx, pwait->msg_type, pwait);
+	}
+	DLIST_REMOVE(pwait->pvfs->wait_list, pwait);
+	return 0;
+}
+
+/*
+  setup a request to wait on a message of type msg_type, with a
+  timeout (given as an expiry time)
+
+  the return value is a handle. To stop waiting talloc_free this
+  handle.
+
+  if msg_type == -1 then no message is registered, and it is assumed
+  that the caller handles any messaging setup needed
+*/
+struct pvfs_wait *pvfs_wait_message(struct pvfs_state *pvfs,
+				    struct ntvfs_request *req,
+				    int msg_type,
+				    struct timeval end_time,
+				    void (*fn)(void *, enum pvfs_wait_notice),
+				    void *private_data)
+{
+	struct pvfs_wait *pwait;
+
+	pwait = talloc(pvfs, struct pvfs_wait);
+	if (pwait == NULL) {
+		return NULL;
+	}
+
+	pwait->private_data = private_data;
+	pwait->handler = fn;
+	pwait->msg_ctx = pvfs->ntvfs->ctx->msg_ctx;
+	pwait->ev = pvfs->ntvfs->ctx->event_ctx;
+	pwait->msg_type = msg_type;
+	pwait->req = talloc_reference(pwait, req);
+	pwait->pvfs = pvfs;
+
+	if (!timeval_is_zero(&end_time)) {
+		/* setup a timer */
+		tevent_add_timer(pwait->ev, pwait, end_time, pvfs_wait_timeout, pwait);
+	}
+
+	/* register with the messaging subsystem for this message
+	   type */
+	if (msg_type != -1) {
+		imessaging_register(pwait->msg_ctx,
+				   pwait,
+				   msg_type,
+				   pvfs_wait_dispatch);
+	}
+
+	/* tell the main smb server layer that we will be replying 
+	   asynchronously */
+	req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
+
+	DLIST_ADD(pvfs->wait_list, pwait);
+
+	/* make sure we cleanup the timer and message handler */
+	talloc_set_destructor(pwait, pvfs_wait_destructor);
+
+	return pwait;
+}
+
+
+/*
+  cancel an outstanding async request
+*/
+NTSTATUS pvfs_cancel(struct ntvfs_module_context *ntvfs, struct ntvfs_request *req)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct pvfs_wait *pwait;
+
+	for (pwait=pvfs->wait_list;pwait;pwait=pwait->next) {
+		if (pwait->req == req) {
+			/* trigger a cancel on the request */
+			pwait->reason = PVFS_WAIT_CANCEL;
+			ntvfs_async_setup(pwait->req, pwait);
+			return NT_STATUS_OK;
+		}
+	}
+
+	return NT_STATUS_DOS(ERRDOS, ERRcancelviolation);
+}
diff --git a/source4/ntvfs/posix/pvfs_write.c b/source4/ntvfs/posix/pvfs_write.c
new file mode 100644
index 0000000..9773325
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_write.c
@@ -0,0 +1,145 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - write
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "librpc/gen_ndr/security.h"
+#include "lib/events/events.h"
+
+static void pvfs_write_time_update_handler(struct tevent_context *ev,
+					   struct tevent_timer *te,
+					   struct timeval tv,
+					   void *private_data)
+{
+	struct pvfs_file_handle *h = talloc_get_type(private_data,
+				     struct pvfs_file_handle);
+	struct odb_lock *lck;
+	NTSTATUS status;
+	NTTIME write_time;
+
+	lck = odb_lock(h, h->pvfs->odb_context, &h->odb_locking_key);
+	if (lck == NULL) {
+		DEBUG(0,("Unable to lock opendb for write time update\n"));
+		return;
+	}
+
+	write_time = timeval_to_nttime(&tv);
+
+	status = odb_set_write_time(lck, write_time, false);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0,("Unable to update write time: %s\n",
+			nt_errstr(status)));
+		return;
+	}
+
+	talloc_free(lck);
+
+	h->write_time.update_event = NULL;
+}
+
+static void pvfs_trigger_write_time_update(struct pvfs_file_handle *h)
+{
+	struct pvfs_state *pvfs = h->pvfs;
+	struct timeval tv;
+
+	if (h->write_time.update_triggered) {
+		return;
+	}
+
+	tv = timeval_current_ofs_usec(pvfs->writetime_delay);
+
+	h->write_time.update_triggered = true;
+	h->write_time.update_on_close = true;
+	h->write_time.update_event = tevent_add_timer(pvfs->ntvfs->ctx->event_ctx,
+						     h, tv,
+						     pvfs_write_time_update_handler,
+						     h);
+	if (!h->write_time.update_event) {
+		DEBUG(0,("Failed tevent_add_timer\n"));
+	}
+}
+
+/*
+  write to a file
+*/
+NTSTATUS pvfs_write(struct ntvfs_module_context *ntvfs,
+		    struct ntvfs_request *req, union smb_write *wr)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	ssize_t ret;
+	struct pvfs_file *f;
+	NTSTATUS status;
+
+	if (wr->generic.level != RAW_WRITE_WRITEX) {
+		return ntvfs_map_write(ntvfs, req, wr);
+	}
+
+	f = pvfs_find_fd(pvfs, req, wr->writex.in.file.ntvfs);
+	if (!f) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	if (f->handle->fd == -1) {
+		return NT_STATUS_INVALID_DEVICE_REQUEST;
+	}
+
+	if (!(f->access_mask & (SEC_FILE_WRITE_DATA | SEC_FILE_APPEND_DATA))) {
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
+	status = pvfs_check_lock(pvfs, f, req->smbpid, 
+				 wr->writex.in.offset,
+				 wr->writex.in.count,
+				 WRITE_LOCK);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	status = pvfs_break_level2_oplocks(f);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	pvfs_trigger_write_time_update(f->handle);
+
+	if (f->handle->name->stream_name) {
+		ret = pvfs_stream_write(pvfs,
+					f->handle,
+					wr->writex.in.data, 
+					wr->writex.in.count,
+					wr->writex.in.offset);
+	} else {
+		ret = pwrite(f->handle->fd, 
+			     wr->writex.in.data, 
+			     wr->writex.in.count,
+			     wr->writex.in.offset);
+	}
+	if (ret == -1) {
+		if (errno == EFBIG) {
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+		return pvfs_map_errno(pvfs, errno);
+	}
+
+	f->handle->seek_offset = wr->writex.in.offset + ret;
+	
+	wr->writex.out.nwritten = ret;
+	wr->writex.out.remaining = 0; /* should fill this in? */
+
+	return NT_STATUS_OK;
+}
diff --git a/source4/ntvfs/posix/pvfs_xattr.c b/source4/ntvfs/posix/pvfs_xattr.c
new file mode 100644
index 0000000..ab88d89
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_xattr.c
@@ -0,0 +1,488 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - xattr support
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "../lib/util/unix_privs.h"
+#include "librpc/gen_ndr/ndr_xattr.h"
+#include "param/param.h"
+#include "ntvfs/posix/posix_eadb_proto.h"
+
+/*
+  pull a xattr as a blob
+*/
+static NTSTATUS pull_xattr_blob(struct pvfs_state *pvfs,
+				TALLOC_CTX *mem_ctx,
+				const char *attr_name, 
+				const char *fname, 
+				int fd, 
+				size_t estimated_size,
+				DATA_BLOB *blob)
+{
+	NTSTATUS status;
+
+	if (pvfs->ea_db) {
+		return pull_xattr_blob_tdb(pvfs, mem_ctx, attr_name, fname, 
+					   fd, estimated_size, blob);
+	}
+
+	status = pull_xattr_blob_system(pvfs, mem_ctx, attr_name, fname, 
+					fd, estimated_size, blob);
+
+	/* if the filesystem doesn't support them, then tell pvfs not to try again */
+	if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_SUPPORTED)||
+	    NT_STATUS_EQUAL(status, NT_STATUS_NOT_IMPLEMENTED)||
+	    NT_STATUS_EQUAL(status, NT_STATUS_INVALID_SYSTEM_SERVICE)) {
+		DEBUG(2,("pvfs_xattr: xattr not supported in filesystem: %s\n", nt_errstr(status)));
+		pvfs->flags &= ~PVFS_FLAG_XATTR_ENABLE;
+		status = NT_STATUS_NOT_FOUND;
+	}
+
+	return status;
+}
+
+/*
+  push a xattr as a blob
+*/
+static NTSTATUS push_xattr_blob(struct pvfs_state *pvfs,
+				const char *attr_name, 
+				const char *fname, 
+				int fd, 
+				const DATA_BLOB *blob)
+{
+	if (pvfs->ea_db) {
+		return push_xattr_blob_tdb(pvfs, attr_name, fname, fd, blob);
+	}
+	return push_xattr_blob_system(pvfs, attr_name, fname, fd, blob);
+}
+
+
+/*
+  delete a xattr
+*/
+static NTSTATUS delete_xattr(struct pvfs_state *pvfs, const char *attr_name, 
+			     const char *fname, int fd)
+{
+	if (pvfs->ea_db) {
+		return delete_posix_eadb(pvfs, attr_name, fname, fd);
+	}
+	return delete_xattr_system(pvfs, attr_name, fname, fd);
+}
+
+/*
+  a hook called on unlink - allows the tdb xattr backend to cleanup
+*/
+NTSTATUS pvfs_xattr_unlink_hook(struct pvfs_state *pvfs, const char *fname)
+{
+	if (pvfs->ea_db) {
+		return unlink_posix_eadb(pvfs, fname);
+	}
+	return unlink_xattr_system(pvfs, fname);
+}
+
+
+/*
+  load a NDR structure from a xattr
+*/
+NTSTATUS pvfs_xattr_ndr_load(struct pvfs_state *pvfs,
+			     TALLOC_CTX *mem_ctx,
+			     const char *fname, int fd, const char *attr_name,
+			     void *p, void *pull_fn)
+{
+	NTSTATUS status;
+	DATA_BLOB blob;
+	enum ndr_err_code ndr_err;
+
+	status = pull_xattr_blob(pvfs, mem_ctx, attr_name, fname, 
+				 fd, XATTR_DOSATTRIB_ESTIMATED_SIZE, &blob);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	/* pull the blob */
+	ndr_err = ndr_pull_struct_blob(&blob, mem_ctx, p,
+								   (ndr_pull_flags_fn_t)pull_fn);
+	if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+		return ndr_map_error2ntstatus(ndr_err);
+	}
+
+	data_blob_free(&blob);
+
+	return NT_STATUS_OK;
+}
+
+/*
+  save a NDR structure into a xattr
+*/
+NTSTATUS pvfs_xattr_ndr_save(struct pvfs_state *pvfs,
+			     const char *fname, int fd, const char *attr_name, 
+			     void *p, void *push_fn)
+{
+	TALLOC_CTX *mem_ctx = talloc_new(NULL);
+	DATA_BLOB blob;
+	NTSTATUS status;
+	enum ndr_err_code ndr_err;
+
+	ndr_err = ndr_push_struct_blob(&blob, mem_ctx, p, (ndr_push_flags_fn_t)push_fn);
+	if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+		talloc_free(mem_ctx);
+		return ndr_map_error2ntstatus(ndr_err);
+	}
+
+	status = push_xattr_blob(pvfs, attr_name, fname, fd, &blob);
+	talloc_free(mem_ctx);
+
+	return status;
+}
+
+
+/*
+  fill in file attributes from extended attributes
+*/
+NTSTATUS pvfs_dosattrib_load(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd)
+{
+	NTSTATUS status;
+	struct xattr_DosAttrib attrib;
+	TALLOC_CTX *mem_ctx = talloc_new(name);
+	struct xattr_DosInfo1 *info1;
+	struct xattr_DosInfo2Old *info2;
+
+	if (name->stream_name != NULL) {
+		name->stream_exists = false;
+	} else {
+		name->stream_exists = true;
+	}
+
+	if (!(pvfs->flags & PVFS_FLAG_XATTR_ENABLE)) {
+		return NT_STATUS_OK;
+	}
+
+	status = pvfs_xattr_ndr_load(pvfs, mem_ctx, name->full_name, 
+				     fd, XATTR_DOSATTRIB_NAME,
+				     &attrib,
+				     (void *) ndr_pull_xattr_DosAttrib);
+
+	/* not having a DosAttrib is not an error */
+	if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
+		talloc_free(mem_ctx);
+		return pvfs_stream_info(pvfs, name, fd);
+	}
+
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(mem_ctx);
+		return status;
+	}
+
+	switch (attrib.version) {
+	case 1:
+		info1 = &attrib.info.info1;
+		name->dos.attrib = pvfs_attrib_normalise(info1->attrib, 
+							 name->st.st_mode);
+		name->dos.ea_size = info1->ea_size;
+		if (name->st.st_size == info1->size) {
+			name->dos.alloc_size = 
+				pvfs_round_alloc_size(pvfs, info1->alloc_size);
+		}
+		if (!null_nttime(info1->create_time)) {
+			name->dos.create_time = info1->create_time;
+		}
+		if (!null_nttime(info1->change_time)) {
+			name->dos.change_time = info1->change_time;
+		}
+		name->dos.flags = 0;
+		break;
+
+	case 2:
+		/*
+		 * Note: This is only used to parse existing values from disk
+		 *       We use xattr_DosInfo1 again for storing new values
+		 */
+		info2 = &attrib.info.oldinfo2;
+		name->dos.attrib = pvfs_attrib_normalise(info2->attrib, 
+							 name->st.st_mode);
+		name->dos.ea_size = info2->ea_size;
+		if (name->st.st_size == info2->size) {
+			name->dos.alloc_size = 
+				pvfs_round_alloc_size(pvfs, info2->alloc_size);
+		}
+		if (!null_nttime(info2->create_time)) {
+			name->dos.create_time = info2->create_time;
+		}
+		if (!null_nttime(info2->change_time)) {
+			name->dos.change_time = info2->change_time;
+		}
+		name->dos.flags = info2->flags;
+		break;
+
+	default:
+		DEBUG(0,("ERROR: Unsupported xattr DosAttrib version %d on '%s'\n",
+			 attrib.version, name->full_name));
+		talloc_free(mem_ctx);
+		return NT_STATUS_INVALID_LEVEL;
+	}
+	talloc_free(mem_ctx);
+	
+	status = pvfs_stream_info(pvfs, name, fd);
+
+	return status;
+}
+
+
+/*
+  save the file attribute into the xattr
+*/
+NTSTATUS pvfs_dosattrib_save(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd)
+{
+	struct xattr_DosAttrib attrib;
+	struct xattr_DosInfo1 *info1;
+
+	if (!(pvfs->flags & PVFS_FLAG_XATTR_ENABLE)) {
+		return NT_STATUS_OK;
+	}
+
+	attrib.version = 1;
+	info1 = &attrib.info.info1;
+
+	name->dos.attrib = pvfs_attrib_normalise(name->dos.attrib, name->st.st_mode);
+
+	info1->attrib      = name->dos.attrib;
+	info1->ea_size     = name->dos.ea_size;
+	info1->size        = name->st.st_size;
+	info1->alloc_size  = name->dos.alloc_size;
+	info1->create_time = name->dos.create_time;
+	info1->change_time = name->dos.change_time;
+
+	return pvfs_xattr_ndr_save(pvfs, name->full_name, fd, 
+				   XATTR_DOSATTRIB_NAME, &attrib, 
+				   (void *) ndr_push_xattr_DosAttrib);
+}
+
+
+/*
+  load the set of DOS EAs
+*/
+NTSTATUS pvfs_doseas_load(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd,
+			  struct xattr_DosEAs *eas)
+{
+	NTSTATUS status;
+	ZERO_STRUCTP(eas);
+
+	if (name->stream_name) {
+		/* We don't support EAs on streams */
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	if (!(pvfs->flags & PVFS_FLAG_XATTR_ENABLE)) {
+		return NT_STATUS_OK;
+	}
+	status = pvfs_xattr_ndr_load(pvfs, eas, name->full_name, fd, XATTR_DOSEAS_NAME,
+				     eas, (void *) ndr_pull_xattr_DosEAs);
+	if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
+		return NT_STATUS_OK;
+	}
+	return status;
+}
+
+/*
+  save the set of DOS EAs
+*/
+NTSTATUS pvfs_doseas_save(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd,
+			  struct xattr_DosEAs *eas)
+{
+	if (!(pvfs->flags & PVFS_FLAG_XATTR_ENABLE)) {
+		return NT_STATUS_OK;
+	}
+	return pvfs_xattr_ndr_save(pvfs, name->full_name, fd, XATTR_DOSEAS_NAME, eas, 
+				   (void *) ndr_push_xattr_DosEAs);
+}
+
+
+/*
+  load the set of streams from extended attributes
+*/
+NTSTATUS pvfs_streams_load(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd,
+			   struct xattr_DosStreams *streams)
+{
+	NTSTATUS status;
+	ZERO_STRUCTP(streams);
+	if (!(pvfs->flags & PVFS_FLAG_XATTR_ENABLE)) {
+		return NT_STATUS_OK;
+	}
+	status = pvfs_xattr_ndr_load(pvfs, streams, name->full_name, fd, 
+				     XATTR_DOSSTREAMS_NAME,
+				     streams, 
+				     (void *) ndr_pull_xattr_DosStreams);
+	if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
+		return NT_STATUS_OK;
+	}
+	return status;
+}
+
+/*
+  save the set of streams into filesystem xattr
+*/
+NTSTATUS pvfs_streams_save(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd,
+			   struct xattr_DosStreams *streams)
+{
+	if (!(pvfs->flags & PVFS_FLAG_XATTR_ENABLE)) {
+		return NT_STATUS_OK;
+	}
+	return pvfs_xattr_ndr_save(pvfs, name->full_name, fd, 
+				   XATTR_DOSSTREAMS_NAME, 
+				   streams, 
+				   (void *) ndr_push_xattr_DosStreams);
+}
+
+
+/*
+  load the current ACL from extended attributes
+*/
+NTSTATUS pvfs_acl_load(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd,
+		       struct xattr_NTACL *acl)
+{
+	NTSTATUS status;
+	ZERO_STRUCTP(acl);
+	if (!(pvfs->flags & PVFS_FLAG_XATTR_ENABLE)) {
+		return NT_STATUS_NOT_FOUND;
+	}
+	status = pvfs_xattr_ndr_load(pvfs, acl, name->full_name, fd, 
+				     XATTR_NTACL_NAME,
+				     acl, 
+				     (void *) ndr_pull_xattr_NTACL);
+	return status;
+}
+
+/*
+  save the acl for a file into filesystem xattr
+*/
+NTSTATUS pvfs_acl_save(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd,
+		       struct xattr_NTACL *acl)
+{
+	NTSTATUS status;
+	void *privs;
+
+	if (!(pvfs->flags & PVFS_FLAG_XATTR_ENABLE)) {
+		return NT_STATUS_OK;
+	}
+
+	/* this xattr is in the "system" namespace, so we need
+	   admin privileges to set it */
+	privs = root_privileges();
+	status = pvfs_xattr_ndr_save(pvfs, name->full_name, fd, 
+				     XATTR_NTACL_NAME, 
+				     acl, 
+				     (void *) ndr_push_xattr_NTACL);
+	talloc_free(privs);
+	return status;
+}
+
+/*
+  create a zero length xattr with the given name
+*/
+NTSTATUS pvfs_xattr_create(struct pvfs_state *pvfs, 
+			   const char *fname, int fd,
+			   const char *attr_prefix,
+			   const char *attr_name)
+{
+	NTSTATUS status;
+	DATA_BLOB blob = data_blob(NULL, 0);
+	char *aname = talloc_asprintf(NULL, "%s%s", attr_prefix, attr_name);
+	if (aname == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	status = push_xattr_blob(pvfs, aname, fname, fd, &blob);
+	talloc_free(aname);
+	return status;
+}
+
+
+/*
+  delete a xattr with the given name
+*/
+NTSTATUS pvfs_xattr_delete(struct pvfs_state *pvfs, 
+			   const char *fname, int fd,
+			   const char *attr_prefix,
+			   const char *attr_name)
+{
+	NTSTATUS status;
+	char *aname = talloc_asprintf(NULL, "%s%s", attr_prefix, attr_name);
+	if (aname == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	status = delete_xattr(pvfs, aname, fname, fd);
+	talloc_free(aname);
+	return status;
+}
+
+/*
+  load a xattr with the given name
+*/
+NTSTATUS pvfs_xattr_load(struct pvfs_state *pvfs, 
+			 TALLOC_CTX *mem_ctx,
+			 const char *fname, int fd,
+			 const char *attr_prefix,
+			 const char *attr_name,
+			 size_t estimated_size,
+			 DATA_BLOB *blob)
+{
+	NTSTATUS status;
+	char *aname = talloc_asprintf(mem_ctx, "%s%s", attr_prefix, attr_name);
+	if (aname == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	status = pull_xattr_blob(pvfs, mem_ctx, aname, fname, fd, estimated_size, blob);
+	talloc_free(aname);
+	return status;
+}
+
+/*
+  save a xattr with the given name
+*/
+NTSTATUS pvfs_xattr_save(struct pvfs_state *pvfs, 
+			 const char *fname, int fd,
+			 const char *attr_prefix,
+			 const char *attr_name,
+			 const DATA_BLOB *blob)
+{
+	NTSTATUS status;
+	char *aname = talloc_asprintf(NULL, "%s%s", attr_prefix, attr_name);
+	if (aname == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	status = push_xattr_blob(pvfs, aname, fname, fd, blob);
+	talloc_free(aname);
+	return status;
+}
+
+
+/*
+  probe for system support for xattrs
+*/
+void pvfs_xattr_probe(struct pvfs_state *pvfs)
+{
+	TALLOC_CTX *tmp_ctx = talloc_new(pvfs);
+	DATA_BLOB blob;
+	pull_xattr_blob(pvfs, tmp_ctx, "user.XattrProbe", pvfs->base_directory, 
+			-1, 1, &blob);
+	pull_xattr_blob(pvfs, tmp_ctx, "security.XattrProbe", pvfs->base_directory, 
+			-1, 1, &blob);
+	talloc_free(tmp_ctx);
+}
diff --git a/source4/ntvfs/posix/python/pyposix_eadb.c b/source4/ntvfs/posix/python/pyposix_eadb.c
new file mode 100644
index 0000000..aca92e7
--- /dev/null
+++ b/source4/ntvfs/posix/python/pyposix_eadb.c
@@ -0,0 +1,140 @@
+/*
+   Unix SMB/CIFS implementation. Xattr manipulation bindings.
+   Copyright (C) Matthieu Patou <mat@matws.net> 2009-2010
+   Base on work of pyglue.c by Jelmer Vernooij <jelmer@samba.org> 2007 and
+    Matthias Dieter Wallnöfer 2009
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "lib/replace/system/python.h"
+#include "python/py3compat.h"
+#include "includes.h"
+#include "system/filesys.h"
+#include <tdb.h>
+#include "lib/tdb_wrap/tdb_wrap.h"
+#include "librpc/ndr/libndr.h"
+#include "ntvfs/posix/posix_eadb.h"
+#include "libcli/util/pyerrors.h"
+#include "param/pyparam.h"
+
+static PyObject *py_is_xattr_supported(PyObject *self,
+			PyObject *Py_UNUSED(ignored))
+{
+	Py_RETURN_TRUE;
+}
+
+static PyObject *py_wrap_setxattr(PyObject *self, PyObject *args)
+{
+	char *filename, *attribute, *tdbname;
+	DATA_BLOB blob;
+	Py_ssize_t blobsize;
+	NTSTATUS status;
+	TALLOC_CTX *mem_ctx;
+	struct tdb_wrap *eadb;
+
+	if (!PyArg_ParseTuple(args, "sss"PYARG_BYTES_LEN, &tdbname, &filename, &attribute,
+						  &blob.data, &blobsize))
+		return NULL;
+
+	blob.length = blobsize;
+	mem_ctx = talloc_new(NULL);
+	eadb = tdb_wrap_open(
+		mem_ctx, tdbname, 50000,
+		lpcfg_tdb_flags(py_default_loadparm_context(mem_ctx),
+				TDB_DEFAULT),
+		O_RDWR|O_CREAT, 0600);
+
+	if (eadb == NULL) {
+		PyErr_SetFromErrno(PyExc_IOError);
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+	status = push_xattr_blob_tdb_raw(eadb, attribute, filename, -1,
+					 &blob);
+	if (!NT_STATUS_IS_OK(status)) {
+		PyErr_SetNTSTATUS(status);
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+	talloc_free(mem_ctx);
+	Py_RETURN_NONE;
+}
+
+static PyObject *py_wrap_getxattr(PyObject *self, PyObject *args)
+{
+	char *filename, *attribute, *tdbname;
+	TALLOC_CTX *mem_ctx;
+	DATA_BLOB blob;
+	PyObject *ret;
+	NTSTATUS status;
+	struct tdb_wrap *eadb = NULL;
+
+	if (!PyArg_ParseTuple(args, "sss", &tdbname, &filename, &attribute))
+		return NULL;
+
+	mem_ctx = talloc_new(NULL);
+	eadb = tdb_wrap_open(
+		mem_ctx, tdbname, 50000,
+		lpcfg_tdb_flags(py_default_loadparm_context(mem_ctx),
+				TDB_DEFAULT),
+		O_RDWR|O_CREAT, 0600);
+	if (eadb == NULL) {
+		PyErr_SetFromErrno(PyExc_IOError);
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+	status = pull_xattr_blob_tdb_raw(eadb, mem_ctx, attribute, filename,
+									 -1, 100, &blob);
+	if (!NT_STATUS_IS_OK(status)) {
+		PyErr_SetNTSTATUS(status);
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+	ret = Py_BuildValue(PYARG_BYTES_LEN, blob.data, blob.length);
+	talloc_free(mem_ctx);
+	return ret;
+}
+
+static PyMethodDef py_posix_eadb_methods[] = {
+	{ "wrap_getxattr", (PyCFunction)py_wrap_getxattr, METH_VARARGS,
+		"wrap_getxattr(filename,attribute) -> blob\n"
+		"Retrieve given attribute on the given file." },
+	{ "wrap_setxattr", (PyCFunction)py_wrap_setxattr, METH_VARARGS,
+		"wrap_setxattr(filename,attribute,value)\n"
+		"Set the given attribute to the given value on the given file." },
+	{ "is_xattr_supported", (PyCFunction)py_is_xattr_supported, METH_NOARGS,
+		"Return true if xattr are supported on this system\n"},
+	{0}
+};
+
+static struct PyModuleDef moduledef = {
+    PyModuleDef_HEAD_INIT,
+    .m_name = "posix_eadb",
+    .m_doc = "Python bindings for xattr manipulation.",
+    .m_size = -1,
+    .m_methods = py_posix_eadb_methods,
+};
+
+MODULE_INIT_FUNC(posix_eadb)
+{
+	PyObject *m;
+
+	m = PyModule_Create(&moduledef);
+
+	if (m == NULL)
+		return NULL;
+
+	return m;
+}
diff --git a/source4/ntvfs/posix/python/pyxattr_native.c b/source4/ntvfs/posix/python/pyxattr_native.c
new file mode 100644
index 0000000..6b237b0
--- /dev/null
+++ b/source4/ntvfs/posix/python/pyxattr_native.c
@@ -0,0 +1,129 @@
+/*
+   Unix SMB/CIFS implementation. Xattr manipulation bindings.
+   Copyright (C) Matthieu Patou <mat@matws.net> 2009
+   Base on work of pyglue.c by Jelmer Vernooij <jelmer@samba.org> 2007 and
+    Matthias Dieter Wallnöfer 2009
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "lib/replace/system/python.h"
+#include "python/py3compat.h"
+#include "includes.h"
+#include "librpc/ndr/libndr.h"
+#include "system/filesys.h"
+#include "lib/util/base64.h"
+
+static PyObject *py_is_xattr_supported(PyObject *self,
+		PyObject *Py_UNUSED(ignored))
+{
+#if !defined(HAVE_XATTR_SUPPORT)
+	Py_RETURN_FALSE;
+#else
+	Py_RETURN_TRUE;
+#endif
+}
+
+static PyObject *py_wrap_setxattr(PyObject *self, PyObject *args)
+{
+	char *filename, *attribute;
+	int ret = 0;
+	Py_ssize_t blobsize;
+	DATA_BLOB blob;
+
+	if (!PyArg_ParseTuple(args, "ss"PYARG_BYTES_LEN, &filename, &attribute, &blob.data,
+        &blobsize))
+		return NULL;
+
+	blob.length = blobsize;
+	ret = setxattr(filename, attribute, blob.data, blob.length, 0);
+	if( ret < 0 ) {
+		if (errno == ENOTSUP) {
+			PyErr_SetFromErrno(PyExc_IOError);
+		} else {
+			PyErr_SetFromErrnoWithFilename(PyExc_OSError, filename);
+		}
+		return NULL;
+	}
+	Py_RETURN_NONE;
+}
+
+static PyObject *py_wrap_getxattr(PyObject *self, PyObject *args)
+{
+	char *filename, *attribute;
+	int len;
+	TALLOC_CTX *mem_ctx;
+	char *buf;
+	PyObject *ret;
+	if (!PyArg_ParseTuple(args, "ss", &filename, &attribute))
+		return NULL;
+	mem_ctx = talloc_new(NULL);
+	len = getxattr(filename,attribute,NULL,0);
+	if( len < 0 ) {
+		if (errno == ENOTSUP) {
+			PyErr_SetFromErrno(PyExc_IOError);
+		} else {
+			PyErr_SetFromErrnoWithFilename(PyExc_OSError, filename);
+		}
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+	/* check length ... */
+	buf = talloc_zero_array(mem_ctx, char, len);
+	len = getxattr(filename, attribute, buf, len);
+	if( len < 0 ) {
+		if (errno == ENOTSUP) {
+			PyErr_SetFromErrno(PyExc_IOError);
+		} else {
+			PyErr_SetFromErrnoWithFilename(PyExc_OSError, filename);
+		}
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+	ret = Py_BuildValue(PYARG_BYTES_LEN, buf, len);
+	talloc_free(mem_ctx);
+	return ret;
+}
+
+static PyMethodDef py_xattr_methods[] = {
+	{ "wrap_getxattr", (PyCFunction)py_wrap_getxattr, METH_VARARGS,
+		"wrap_getxattr(filename,attribute) -> blob\n"
+		"Retrieve given attribute on the given file." },
+	{ "wrap_setxattr", (PyCFunction)py_wrap_setxattr, METH_VARARGS,
+		"wrap_setxattr(filename,attribute,value)\n"
+		"Set the given attribute to the given value on the given file." },
+	{ "is_xattr_supported", (PyCFunction)py_is_xattr_supported, METH_NOARGS,
+		"Return true if xattr are supported on this system\n"},
+	{0}
+};
+
+static struct PyModuleDef moduledef = {
+    PyModuleDef_HEAD_INIT,
+    .m_name = "xattr_native",
+    .m_doc = "Python bindings for xattr manipulation.",
+    .m_size = -1,
+    .m_methods = py_xattr_methods,
+};
+
+MODULE_INIT_FUNC(xattr_native)
+{
+	PyObject *m;
+
+	m = PyModule_Create(&moduledef);
+
+	if (m == NULL)
+		return NULL;
+
+	return m;
+}
diff --git a/source4/ntvfs/posix/python/pyxattr_tdb.c b/source4/ntvfs/posix/python/pyxattr_tdb.c
new file mode 100644
index 0000000..5f07809
--- /dev/null
+++ b/source4/ntvfs/posix/python/pyxattr_tdb.c
@@ -0,0 +1,177 @@
+/*
+   Unix SMB/CIFS implementation. Xattr manipulation bindings.
+   Copyright (C) Matthieu Patou <mat@matws.net> 2009-2010
+   Base on work of pyglue.c by Jelmer Vernooij <jelmer@samba.org> 2007 and
+    Matthias Dieter Wallnöfer 2009
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "lib/replace/system/python.h"
+#include "python/py3compat.h"
+#include "includes.h"
+#include "system/filesys.h"
+#include <tdb.h>
+#include "lib/tdb_wrap/tdb_wrap.h"
+#include "librpc/ndr/libndr.h"
+#include "ntvfs/posix/posix_eadb.h"
+#include "libcli/util/pyerrors.h"
+#include "param/pyparam.h"
+#include "lib/dbwrap/dbwrap.h"
+#include "lib/dbwrap/dbwrap_open.h"
+#include "lib/dbwrap/dbwrap_tdb.h"
+#include "source3/lib/xattr_tdb.h"
+
+static PyObject *py_is_xattr_supported(PyObject *self,
+		PyObject *Py_UNUSED(ignored))
+{
+	Py_RETURN_TRUE;
+}
+
+static PyObject *py_wrap_setxattr(PyObject *self, PyObject *args)
+{
+	char *filename, *attribute, *tdbname;
+	DATA_BLOB blob;
+	Py_ssize_t blobsize;
+	int ret;
+	TALLOC_CTX *mem_ctx;
+	struct loadparm_context *lp_ctx;
+	struct db_context *eadb = NULL;
+	struct file_id id;
+	struct stat sbuf;
+
+	if (!PyArg_ParseTuple(args, "sss"PYARG_BYTES_LEN, &tdbname, &filename, &attribute,
+						  &blob.data, &blobsize))
+		return NULL;
+
+	blob.length = blobsize;
+	mem_ctx = talloc_new(NULL);
+
+	lp_ctx = py_default_loadparm_context(mem_ctx);
+	eadb = db_open_tdb(mem_ctx, tdbname, 50000,
+			   lpcfg_tdb_flags(lp_ctx, TDB_DEFAULT),
+			   O_RDWR|O_CREAT, 0600, DBWRAP_LOCK_ORDER_2,
+			   DBWRAP_FLAG_NONE);
+
+	if (eadb == NULL) {
+		PyErr_SetFromErrno(PyExc_IOError);
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+
+	ret = stat(filename, &sbuf);
+	if (ret < 0) {
+		PyErr_SetFromErrno(PyExc_IOError);
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+
+	ZERO_STRUCT(id);
+	id.devid = sbuf.st_dev;
+	id.inode = sbuf.st_ino;
+
+	ret = xattr_tdb_setattr(eadb, &id, attribute, blob.data, blob.length, 0);
+	if (ret < 0) {
+		PyErr_SetFromErrno(PyExc_TypeError);
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+	talloc_free(mem_ctx);
+	Py_RETURN_NONE;
+}
+
+static PyObject *py_wrap_getxattr(PyObject *self, PyObject *args)
+{
+	char *filename, *attribute, *tdbname;
+	TALLOC_CTX *mem_ctx;
+	struct loadparm_context *lp_ctx;
+	DATA_BLOB blob;
+	PyObject *ret_obj;
+	int ret;
+	ssize_t xattr_size;
+	struct db_context *eadb = NULL;
+	struct file_id id;
+	struct stat sbuf;
+
+	if (!PyArg_ParseTuple(args, "sss", &tdbname, &filename, &attribute))
+		return NULL;
+
+	mem_ctx = talloc_new(NULL);
+
+	lp_ctx = py_default_loadparm_context(mem_ctx);
+	eadb = db_open_tdb(mem_ctx, tdbname, 50000,
+			   lpcfg_tdb_flags(lp_ctx, TDB_DEFAULT),
+			   O_RDWR|O_CREAT, 0600, DBWRAP_LOCK_ORDER_2,
+			   DBWRAP_FLAG_NONE);
+
+	if (eadb == NULL) {
+		PyErr_SetFromErrno(PyExc_IOError);
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+
+	ret = stat(filename, &sbuf);
+	if (ret < 0) {
+		PyErr_SetFromErrno(PyExc_IOError);
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+
+	ZERO_STRUCT(id);
+	id.devid = sbuf.st_dev;
+	id.inode = sbuf.st_ino;
+
+	xattr_size = xattr_tdb_getattr(eadb, mem_ctx, &id, attribute, &blob);
+	if (xattr_size < 0) {
+		PyErr_SetFromErrno(PyExc_TypeError);
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+	ret_obj = Py_BuildValue(PYARG_BYTES_LEN, blob.data, xattr_size);
+	talloc_free(mem_ctx);
+	return ret_obj;
+}
+
+static PyMethodDef py_xattr_methods[] = {
+	{ "wrap_getxattr", (PyCFunction)py_wrap_getxattr, METH_VARARGS,
+		"wrap_getxattr(filename,attribute) -> blob\n"
+		"Retrieve given attribute on the given file." },
+	{ "wrap_setxattr", (PyCFunction)py_wrap_setxattr, METH_VARARGS,
+		"wrap_setxattr(filename,attribute,value)\n"
+		"Set the given attribute to the given value on the given file." },
+	{ "is_xattr_supported", (PyCFunction)py_is_xattr_supported, METH_NOARGS,
+		"Return true if xattr are supported on this system\n"},
+	{0}
+};
+
+static struct PyModuleDef moduledef = {
+    PyModuleDef_HEAD_INIT,
+    .m_name = "xattr_tdb",
+    .m_doc = "Python bindings for xattr manipulation.",
+    .m_size = -1,
+    .m_methods = py_xattr_methods,
+};
+
+MODULE_INIT_FUNC(xattr_tdb)
+{
+	PyObject *m;
+
+	m = PyModule_Create(&moduledef);
+
+	if (m == NULL)
+		return NULL;
+
+	return m;
+}
+
diff --git a/source4/ntvfs/posix/vfs_posix.c b/source4/ntvfs/posix/vfs_posix.c
new file mode 100644
index 0000000..8375def
--- /dev/null
+++ b/source4/ntvfs/posix/vfs_posix.c
@@ -0,0 +1,426 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/*
+  this implements most of the POSIX NTVFS backend
+  This is the default backend
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "librpc/gen_ndr/security.h"
+#include <tdb.h>
+#include "lib/tdb_wrap/tdb_wrap.h"
+#include "libcli/security/security.h"
+#include "lib/events/events.h"
+#include "param/param.h"
+#include "lib/util/idtree.h"
+
+/*
+  setup config options for a posix share
+*/
+static void pvfs_setup_options(struct pvfs_state *pvfs)
+{
+	struct share_config *scfg = pvfs->ntvfs->ctx->config;
+	char *eadb;
+	char *xattr_backend;
+	bool def_perm_override = false;
+
+	if (share_bool_option(scfg, SHARE_MAP_HIDDEN, SHARE_MAP_HIDDEN_DEFAULT))
+		pvfs->flags |= PVFS_FLAG_MAP_HIDDEN;
+	if (share_bool_option(scfg, SHARE_MAP_ARCHIVE, SHARE_MAP_ARCHIVE_DEFAULT))
+		pvfs->flags |= PVFS_FLAG_MAP_ARCHIVE;
+	if (share_bool_option(scfg, SHARE_MAP_SYSTEM, SHARE_MAP_SYSTEM_DEFAULT))
+		pvfs->flags |= PVFS_FLAG_MAP_SYSTEM;
+	if (share_bool_option(scfg, SHARE_READONLY, SHARE_READONLY_DEFAULT))
+		pvfs->flags |= PVFS_FLAG_READONLY;
+	if (share_bool_option(scfg, SHARE_STRICT_SYNC, SHARE_STRICT_SYNC_DEFAULT))
+		pvfs->flags |= PVFS_FLAG_STRICT_SYNC;
+	if (share_bool_option(scfg, SHARE_STRICT_LOCKING, SHARE_STRICT_LOCKING_DEFAULT))
+		pvfs->flags |= PVFS_FLAG_STRICT_LOCKING;
+	if (share_bool_option(scfg, SHARE_CI_FILESYSTEM, SHARE_CI_FILESYSTEM_DEFAULT))
+		pvfs->flags |= PVFS_FLAG_CI_FILESYSTEM;
+	if (share_bool_option(scfg, PVFS_FAKE_OPLOCKS, PVFS_FAKE_OPLOCKS_DEFAULT))
+		pvfs->flags |= PVFS_FLAG_FAKE_OPLOCKS;
+
+#if defined(O_DIRECTORY) && defined(O_NOFOLLOW)
+	/* set PVFS_PERM_OVERRIDE by default only if the system
+	 * supports the necessary capabilities to make it secure
+	 */
+	def_perm_override = true;
+#endif
+	if (share_bool_option(scfg, PVFS_PERM_OVERRIDE, def_perm_override))
+		pvfs->flags |= PVFS_FLAG_PERM_OVERRIDE;
+
+	/* file perm options */
+	pvfs->options.create_mask       = share_int_option(scfg,
+							   SHARE_CREATE_MASK,
+							   SHARE_CREATE_MASK_DEFAULT);
+	pvfs->options.dir_mask          = share_int_option(scfg,
+							   SHARE_DIR_MASK,
+							   SHARE_DIR_MASK_DEFAULT);
+	pvfs->options.force_dir_mode    = share_int_option(scfg,
+							   SHARE_FORCE_DIR_MODE,
+							   SHARE_FORCE_DIR_MODE_DEFAULT);
+	pvfs->options.force_create_mode = share_int_option(scfg,
+							   SHARE_FORCE_CREATE_MODE,
+							   SHARE_FORCE_CREATE_MODE_DEFAULT);
+	/* this must be a power of 2 */
+	pvfs->alloc_size_rounding = share_int_option(scfg,
+							PVFS_ALLOCATION_ROUNDING,
+							PVFS_ALLOCATION_ROUNDING_DEFAULT);
+
+	pvfs->search.inactivity_time = share_int_option(scfg,
+							PVFS_SEARCH_INACTIVITY,
+							PVFS_SEARCH_INACTIVITY_DEFAULT);
+
+#ifdef HAVE_XATTR_SUPPORT
+	if (share_bool_option(scfg, PVFS_XATTR, PVFS_XATTR_DEFAULT))
+		pvfs->flags |= PVFS_FLAG_XATTR_ENABLE;
+#endif
+
+	pvfs->sharing_violation_delay = share_int_option(scfg,
+							PVFS_SHARE_DELAY,
+							PVFS_SHARE_DELAY_DEFAULT);
+
+	pvfs->oplock_break_timeout = share_int_option(scfg,
+						      PVFS_OPLOCK_TIMEOUT,
+						      PVFS_OPLOCK_TIMEOUT_DEFAULT);
+
+	pvfs->writetime_delay = share_int_option(scfg,
+						 PVFS_WRITETIME_DELAY,
+						 PVFS_WRITETIME_DELAY_DEFAULT);
+
+	pvfs->share_name = talloc_strdup(pvfs, scfg->name);
+
+	pvfs->fs_attribs = 
+		FS_ATTR_CASE_SENSITIVE_SEARCH | 
+		FS_ATTR_CASE_PRESERVED_NAMES |
+		FS_ATTR_UNICODE_ON_DISK;
+
+	/* allow xattrs to be stored in a external tdb */
+	eadb = share_string_option(pvfs, scfg, PVFS_EADB, NULL);
+	if (eadb != NULL) {
+		pvfs->ea_db = tdb_wrap_open(
+			pvfs, eadb, 50000,
+			lpcfg_tdb_flags(pvfs->ntvfs->ctx->lp_ctx, TDB_DEFAULT),
+			O_RDWR|O_CREAT, 0600);
+		if (pvfs->ea_db != NULL) {
+			pvfs->flags |= PVFS_FLAG_XATTR_ENABLE;
+		} else {
+			DEBUG(0,("Failed to open eadb '%s' - %s\n",
+				 eadb, strerror(errno)));
+			pvfs->flags &= ~PVFS_FLAG_XATTR_ENABLE;
+		}
+		TALLOC_FREE(eadb);
+	}
+
+	if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
+		pvfs->fs_attribs |= FS_ATTR_NAMED_STREAMS;
+	}
+	if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
+		pvfs->fs_attribs |= FS_ATTR_PERSISTANT_ACLS;
+	}
+
+	pvfs->sid_cache.creator_owner = dom_sid_parse_talloc(pvfs, SID_CREATOR_OWNER);
+	pvfs->sid_cache.creator_group = dom_sid_parse_talloc(pvfs, SID_CREATOR_GROUP);
+
+	/* check if the system really supports xattrs */
+	if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
+		pvfs_xattr_probe(pvfs);
+	}
+
+	/* enable an ACL backend */
+	xattr_backend = share_string_option(pvfs, scfg, PVFS_ACL, "xattr");
+	pvfs->acl_ops = pvfs_acl_backend_byname(xattr_backend);
+	TALLOC_FREE(xattr_backend);
+}
+
+static int pvfs_state_destructor(struct pvfs_state *pvfs)
+{
+	struct pvfs_file *f, *fn;
+	struct pvfs_search_state *s, *sn;
+
+	/* 
+	 * make sure we cleanup files and searches before anything else
+	 * because there destructors need to access the pvfs_state struct
+	 */
+	for (f=pvfs->files.list; f; f=fn) {
+		fn = f->next;
+		talloc_free(f);
+	}
+
+	for (s=pvfs->search.list; s; s=sn) {
+		sn = s->next;
+		talloc_free(s);
+	}
+
+	return 0;
+}
+
+/*
+  connect to a share - used when a tree_connect operation comes
+  in. For a disk based backend we needs to ensure that the base
+  directory exists (tho it doesn't need to be accessible by the user,
+  that comes later)
+*/
+static NTSTATUS pvfs_connect(struct ntvfs_module_context *ntvfs,
+			     struct ntvfs_request *req,
+			     union smb_tcon* tcon)
+{
+	struct pvfs_state *pvfs;
+	struct stat st;
+	char *base_directory;
+	NTSTATUS status;
+	const char *sharename;
+
+	switch (tcon->generic.level) {
+	case RAW_TCON_TCON:
+		sharename = tcon->tcon.in.service;
+		break;
+	case RAW_TCON_TCONX:
+		sharename = tcon->tconx.in.path;
+		break;
+	case RAW_TCON_SMB2:
+		sharename = tcon->smb2.in.path;
+		break;
+	default:
+		return NT_STATUS_INVALID_LEVEL;
+	}
+
+	if (strncmp(sharename, "\\\\", 2) == 0) {
+		char *p = strchr(sharename+2, '\\');
+		if (p) {
+			sharename = p + 1;
+		}
+	}
+
+	/*
+	 * TODO: call this from ntvfs_posix_init()
+	 *       but currently we don't have a lp_ctx there
+	 */
+	status = pvfs_acl_init();
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	pvfs = talloc_zero(ntvfs, struct pvfs_state);
+	NT_STATUS_HAVE_NO_MEMORY(pvfs);
+
+	/* for simplicity of path construction, remove any trailing slash now */
+	base_directory = share_string_option(pvfs, ntvfs->ctx->config, SHARE_PATH, "");
+	NT_STATUS_HAVE_NO_MEMORY(base_directory);
+	if (strcmp(base_directory, "/") != 0) {
+		trim_string(base_directory, NULL, "/");
+	}
+
+	pvfs->ntvfs = ntvfs;
+	pvfs->base_directory = base_directory;
+
+	/* the directory must exist. Note that we deliberately don't
+	   check that it is readable */
+	if (stat(pvfs->base_directory, &st) != 0 || !S_ISDIR(st.st_mode)) {
+		DEBUG(0,("pvfs_connect: '%s' is not a directory, when connecting to [%s]\n", 
+			 pvfs->base_directory, sharename));
+		return NT_STATUS_BAD_NETWORK_NAME;
+	}
+
+	ntvfs->ctx->fs_type = talloc_strdup(ntvfs->ctx, "NTFS");
+	NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->fs_type);
+
+	ntvfs->ctx->dev_type = talloc_strdup(ntvfs->ctx, "A:");
+	NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->dev_type);
+
+	if (tcon->generic.level == RAW_TCON_TCONX) {
+		tcon->tconx.out.fs_type = ntvfs->ctx->fs_type;
+		tcon->tconx.out.dev_type = ntvfs->ctx->dev_type;
+	}
+
+	ntvfs->private_data = pvfs;
+
+	pvfs->brl_context = brlock_init(pvfs, 
+				     pvfs->ntvfs->ctx->server_id,
+				     pvfs->ntvfs->ctx->lp_ctx,
+				     pvfs->ntvfs->ctx->msg_ctx);
+	if (pvfs->brl_context == NULL) {
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	pvfs->odb_context = odb_init(pvfs, pvfs->ntvfs->ctx);
+	if (pvfs->odb_context == NULL) {
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	/* allow this to be NULL - we just disable change notify */
+	pvfs->notify_context = notify_init(pvfs, 
+					   pvfs->ntvfs->ctx->server_id,  
+					   pvfs->ntvfs->ctx->msg_ctx, 
+					   pvfs->ntvfs->ctx->lp_ctx,
+					   pvfs->ntvfs->ctx->event_ctx,
+					   pvfs->ntvfs->ctx->config);
+
+	/* allocate the search handle -> ptr tree */
+	pvfs->search.idtree = idr_init(pvfs);
+	NT_STATUS_HAVE_NO_MEMORY(pvfs->search.idtree);
+
+	status = pvfs_mangle_init(pvfs);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	pvfs_setup_options(pvfs);
+
+	talloc_set_destructor(pvfs, pvfs_state_destructor);
+
+#ifdef SIGXFSZ
+	/* who had the stupid idea to generate a signal on a large
+	   file write instead of just failing it!? */
+	BlockSignals(true, SIGXFSZ);
+#endif
+
+	return NT_STATUS_OK;
+}
+
+/*
+  disconnect from a share
+*/
+static NTSTATUS pvfs_disconnect(struct ntvfs_module_context *ntvfs)
+{
+	return NT_STATUS_OK;
+}
+
+/*
+  check if a directory exists
+*/
+static NTSTATUS pvfs_chkpath(struct ntvfs_module_context *ntvfs,
+			     struct ntvfs_request *req,
+			     union smb_chkpath *cp)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	struct pvfs_filename *name;
+	NTSTATUS status;
+
+	/* resolve the cifs name to a posix name */
+	status = pvfs_resolve_name(pvfs, req, cp->chkpath.in.path, 0, &name);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	if (!name->exists) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	if (!S_ISDIR(name->st.st_mode)) {
+		return NT_STATUS_NOT_A_DIRECTORY;
+	}
+
+	return NT_STATUS_OK;
+}
+
+/*
+  copy a set of files
+*/
+static NTSTATUS pvfs_copy(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req, struct smb_copy *cp)
+{
+	DEBUG(0,("pvfs_copy not implemented\n"));
+	return NT_STATUS_NOT_SUPPORTED;
+}
+
+/*
+  return print queue info
+*/
+static NTSTATUS pvfs_lpq(struct ntvfs_module_context *ntvfs,
+			 struct ntvfs_request *req, union smb_lpq *lpq)
+{
+	return NT_STATUS_NOT_SUPPORTED;
+}
+
+/* SMBtrans - not used on file shares */
+static NTSTATUS pvfs_trans(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req, struct smb_trans2 *trans2)
+{
+	return NT_STATUS_ACCESS_DENIED;
+}
+
+/*
+  initialise the POSIX disk backend, registering ourselves with the ntvfs subsystem
+ */
+NTSTATUS ntvfs_posix_init(TALLOC_CTX *ctx)
+{
+	NTSTATUS ret;
+	struct ntvfs_ops ops;
+	NTVFS_CURRENT_CRITICAL_SIZES(vers);
+
+	ZERO_STRUCT(ops);
+
+	ops.type = NTVFS_DISK;
+	
+	/* fill in all the operations */
+	ops.connect_fn = pvfs_connect;
+	ops.disconnect_fn = pvfs_disconnect;
+	ops.unlink_fn = pvfs_unlink;
+	ops.chkpath_fn = pvfs_chkpath;
+	ops.qpathinfo_fn = pvfs_qpathinfo;
+	ops.setpathinfo_fn = pvfs_setpathinfo;
+	ops.open_fn = pvfs_open;
+	ops.mkdir_fn = pvfs_mkdir;
+	ops.rmdir_fn = pvfs_rmdir;
+	ops.rename_fn = pvfs_rename;
+	ops.copy_fn = pvfs_copy;
+	ops.ioctl_fn = pvfs_ioctl;
+	ops.read_fn = pvfs_read;
+	ops.write_fn = pvfs_write;
+	ops.seek_fn = pvfs_seek;
+	ops.flush_fn = pvfs_flush;
+	ops.close_fn = pvfs_close;
+	ops.exit_fn = pvfs_exit;
+	ops.lock_fn = pvfs_lock;
+	ops.setfileinfo_fn = pvfs_setfileinfo;
+	ops.qfileinfo_fn = pvfs_qfileinfo;
+	ops.fsinfo_fn = pvfs_fsinfo;
+	ops.lpq_fn = pvfs_lpq;
+	ops.search_first_fn = pvfs_search_first;
+	ops.search_next_fn = pvfs_search_next;
+	ops.search_close_fn = pvfs_search_close;
+	ops.trans_fn = pvfs_trans;
+	ops.logoff_fn = pvfs_logoff;
+	ops.async_setup_fn = pvfs_async_setup;
+	ops.cancel_fn = pvfs_cancel;
+	ops.notify_fn = pvfs_notify;
+
+	/* register ourselves with the NTVFS subsystem. We register
+	   under the name 'default' as we wish to be the default
+	   backend, and also register as 'posix' */
+	ops.name = "default";
+	ret = ntvfs_register(&ops, &vers);
+
+	if (!NT_STATUS_IS_OK(ret)) {
+		DEBUG(0,("Failed to register POSIX backend as '%s'!\n", ops.name));
+	}
+
+	ops.name = "posix";
+	ret = ntvfs_register(&ops, &vers);
+
+	if (!NT_STATUS_IS_OK(ret)) {
+		DEBUG(0,("Failed to register POSIX backend as '%s'!\n", ops.name));
+	}
+
+	if (NT_STATUS_IS_OK(ret)) {
+		ret = ntvfs_common_init();
+	}
+
+	return ret;
+}
diff --git a/source4/ntvfs/posix/vfs_posix.h b/source4/ntvfs/posix/vfs_posix.h
new file mode 100644
index 0000000..3dbd785
--- /dev/null
+++ b/source4/ntvfs/posix/vfs_posix.h
@@ -0,0 +1,290 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - structure definitions
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _VFS_POSIX_H_
+#define _VFS_POSIX_H_
+
+#include "librpc/gen_ndr/xattr.h"
+#include "system/filesys.h"
+#include "ntvfs/ntvfs.h"
+#include "ntvfs/common/ntvfs_common.h"
+#include "libcli/wbclient/wbclient.h"
+#include "lib/events/events.h"
+
+struct pvfs_wait;
+struct pvfs_oplock;
+
+/* this is the private structure for the posix vfs backend. It is used
+   to hold per-connection (per tree connect) state information */
+struct pvfs_state {
+	struct ntvfs_module_context *ntvfs;
+	const char *base_directory;
+	struct GUID *base_fs_uuid;
+
+	const char *share_name;
+	unsigned int flags;
+
+	struct pvfs_mangle_context *mangle_ctx;
+
+	struct brl_context *brl_context;
+	struct odb_context *odb_context;
+	struct notify_context *notify_context;
+
+	/* a list of pending async requests. Needed to support
+	   ntcancel */
+	struct pvfs_wait *wait_list;
+
+	/* the sharing violation timeout (nsecs) */
+	unsigned int sharing_violation_delay;
+
+	/* the oplock break timeout (secs) */
+	unsigned int oplock_break_timeout;
+
+	/* the write time update delay (nsecs) */
+	unsigned int writetime_delay;
+
+	/* filesystem attributes (see FS_ATTR_*) */
+	uint32_t fs_attribs;
+
+	/* if posix:eadb is set, then this gets setup */
+	struct tdb_wrap *ea_db;
+
+	/* the allocation size rounding */
+	uint32_t alloc_size_rounding;
+
+	struct {
+		/* the open files as DLINKLIST */
+		struct pvfs_file *list;
+	} files;
+
+	struct {
+		/* an id tree mapping open search ID to a pvfs_search_state structure */
+		struct idr_context *idtree;
+
+		/* the open searches as DLINKLIST */
+		struct pvfs_search_state *list;
+
+		/* how long to keep inactive searches around for */
+		unsigned int inactivity_time;
+	} search;
+
+	/* used to accelerate acl mapping */
+	struct {
+		const struct dom_sid *creator_owner;
+		const struct dom_sid *creator_group;		
+	} sid_cache;
+
+	/* the acl backend */
+	const struct pvfs_acl_ops *acl_ops;
+
+	/* non-flag share options */
+	struct {
+		mode_t dir_mask;
+		mode_t force_dir_mode;
+		mode_t create_mask;
+		mode_t force_create_mode;
+	} options;
+};
+
+/* this is the basic information needed about a file from the filesystem */
+struct pvfs_dos_fileinfo {
+	NTTIME create_time;
+	NTTIME access_time;
+	NTTIME write_time;
+	NTTIME change_time;
+	uint32_t attrib;
+	uint64_t alloc_size;
+	uint32_t nlink;
+	uint32_t ea_size;
+	uint64_t file_id;
+	uint32_t flags;
+};
+
+/*
+  this is the structure returned by pvfs_resolve_name(). It holds the posix details of
+  a filename passed by the client to any function
+*/
+struct pvfs_filename {
+	char *original_name;
+	char *full_name;
+	char *stream_name; /* does not include :$DATA suffix */
+	uint32_t stream_id;      /* this uses a hash, so is probabilistic */
+	bool has_wildcard;
+	bool exists;          /* true if the base filename exists */
+	bool stream_exists;   /* true if the stream exists */
+	bool allow_override;
+	struct stat st;
+	struct pvfs_dos_fileinfo dos;
+};
+
+
+/* open file handle state - encapsulates the posix fd
+
+   Note that this is separated from the pvfs_file structure in order
+   to cope with the openx DENY_DOS semantics where a 2nd DENY_DOS open
+   on the same connection gets the same low level filesystem handle,
+   rather than a new handle
+*/
+struct pvfs_file_handle {
+	int fd;
+
+	struct pvfs_filename *name;
+
+	/* a unique file key to be used for open file locking */
+	DATA_BLOB odb_locking_key;
+
+	uint32_t create_options;
+
+	/* this is set by the mode_information level. What does it do? */
+	uint32_t mode;
+
+	/* yes, we need 2 independent positions ... */
+	uint64_t seek_offset;
+	uint64_t position;
+
+	bool have_opendb_entry;
+
+	/*
+	 * we need to wait for oplock break requests from other processes,
+	 * and we need to remember the pvfs_file so we can correctly
+	 * forward the oplock break to the client
+	 */
+	struct pvfs_oplock *oplock;
+
+	/* we need this hook back to our parent for lock destruction */
+	struct pvfs_state *pvfs;
+
+	struct {
+		bool update_triggered;
+		struct tevent_timer *update_event;
+		bool update_on_close;
+		NTTIME close_time;
+		bool update_forced;
+	} write_time;
+
+	/* the open went through to completion */
+	bool open_completed;
+
+	uint8_t private_flags;
+};
+
+/* open file state */
+struct pvfs_file {
+	struct pvfs_file *next, *prev;
+	struct pvfs_file_handle *handle;
+	struct ntvfs_handle *ntvfs;
+
+	struct pvfs_state *pvfs;
+
+	uint32_t impersonation;
+	uint32_t share_access;
+	uint32_t access_mask;
+
+	/* a list of pending locks - used for locking cancel operations */
+	struct pvfs_pending_lock *pending_list;
+
+	/* a file handle to be used for byte range locking */
+	struct brl_handle *brl_handle;
+
+	/* a count of active locks - used to avoid calling brlock_close on
+	   file close */
+	uint64_t lock_count;
+
+	/* for directories, a buffer of pending notify events */
+	struct pvfs_notify_buffer *notify_buffer;
+
+	/* for directories, the state of an incomplete SMB2 Find */
+	struct pvfs_search_state *search;
+};
+
+/* the state of a search started with pvfs_search_first() */
+struct pvfs_search_state {
+	struct pvfs_search_state *prev, *next;
+	struct pvfs_state *pvfs;
+	uint16_t handle;
+	off_t current_index;
+	uint16_t search_attrib;
+	uint16_t must_attrib;
+	struct pvfs_dir *dir;
+	time_t last_used; /* monotonic clock time */
+	unsigned int num_ea_names;
+	struct ea_name *ea_names;
+	struct tevent_timer *te;
+};
+
+/* flags to pvfs_resolve_name() */
+#define PVFS_RESOLVE_WILDCARD    (1<<0)
+#define PVFS_RESOLVE_STREAMS     (1<<1)
+#define PVFS_RESOLVE_NO_OPENDB   (1<<2)
+
+/* flags in pvfs->flags */
+#define PVFS_FLAG_CI_FILESYSTEM  (1<<0) /* the filesystem is case insensitive */
+#define PVFS_FLAG_MAP_ARCHIVE    (1<<1)
+#define PVFS_FLAG_MAP_SYSTEM     (1<<2)
+#define PVFS_FLAG_MAP_HIDDEN     (1<<3)
+#define PVFS_FLAG_READONLY       (1<<4)
+#define PVFS_FLAG_STRICT_SYNC    (1<<5)
+#define PVFS_FLAG_STRICT_LOCKING (1<<6)
+#define PVFS_FLAG_XATTR_ENABLE   (1<<7)
+#define PVFS_FLAG_FAKE_OPLOCKS   (1<<8)
+#define PVFS_FLAG_PERM_OVERRIDE  (1<<10)
+
+/* forward declare some anonymous structures */
+struct pvfs_dir;
+
+/* types of notification for pvfs wait events */
+enum pvfs_wait_notice {PVFS_WAIT_EVENT, PVFS_WAIT_TIMEOUT, PVFS_WAIT_CANCEL};
+
+/*
+  state of a pending retry
+*/
+struct pvfs_odb_retry;
+
+#define PVFS_EADB			"posix:eadb"
+#define PVFS_XATTR			"posix:xattr"
+#define PVFS_FAKE_OPLOCKS		"posix:fakeoplocks"
+#define PVFS_SHARE_DELAY		"posix:sharedelay"
+#define PVFS_OPLOCK_TIMEOUT		"posix:oplocktimeout"
+#define PVFS_WRITETIME_DELAY		"posix:writetimeupdatedelay"
+#define PVFS_ALLOCATION_ROUNDING	"posix:allocationrounding"
+#define PVFS_SEARCH_INACTIVITY		"posix:searchinactivity"
+#define PVFS_ACL			"posix:acl"
+#define PVFS_PERM_OVERRIDE		"posix:permission override"
+
+#define PVFS_XATTR_DEFAULT			true
+#define PVFS_FAKE_OPLOCKS_DEFAULT		false
+#define PVFS_SHARE_DELAY_DEFAULT		1000000 /* nsecs */
+#define PVFS_OPLOCK_TIMEOUT_DEFAULT		30 /* secs */
+#define PVFS_WRITETIME_DELAY_DEFAULT		2000000 /* nsecs */
+#define PVFS_ALLOCATION_ROUNDING_DEFAULT	512
+#define PVFS_SEARCH_INACTIVITY_DEFAULT		300
+
+struct pvfs_acl_ops {
+	const char *name;
+	NTSTATUS (*acl_load)(struct pvfs_state *, struct pvfs_filename *, int , TALLOC_CTX *, 
+			     struct security_descriptor **);
+	NTSTATUS (*acl_save)(struct pvfs_state *, struct pvfs_filename *, int , struct security_descriptor *);
+};
+
+#include "ntvfs/posix/vfs_posix_proto.h"
+#include "ntvfs/posix/vfs_acl_proto.h"
+
+#endif /* _VFS_POSIX_H_ */
diff --git a/source4/ntvfs/posix/wscript_build b/source4/ntvfs/posix/wscript_build
new file mode 100644
index 0000000..649dea6
--- /dev/null
+++ b/source4/ntvfs/posix/wscript_build
@@ -0,0 +1,61 @@
+#!/usr/bin/env python
+
+if bld.CONFIG_SET('WITH_NTVFS_FILESERVER'):
+    bld.SAMBA_SUBSYSTEM('pvfs_acl',
+	                source='pvfs_acl.c',
+	                autoproto='vfs_acl_proto.h',
+	                deps='events samba-modules',
+    )
+
+
+    bld.SAMBA_MODULE('pvfs_acl_xattr',
+	             source='pvfs_acl_xattr.c',
+	             subsystem='pvfs_acl',
+	             init_function='pvfs_acl_xattr_init',
+	            deps='NDR_XATTR events'
+    )
+
+
+    bld.SAMBA_MODULE('pvfs_acl_nfs4',
+	             source='pvfs_acl_nfs4.c',
+	             subsystem='pvfs_acl',
+	             init_function='pvfs_acl_nfs4_init',
+	            deps='NDR_NFS4ACL samdb events'
+    )
+
+
+    bld.SAMBA_MODULE('ntvfs_posix',
+	             source='vfs_posix.c pvfs_util.c pvfs_search.c pvfs_dirlist.c pvfs_fileinfo.c pvfs_unlink.c pvfs_mkdir.c pvfs_open.c pvfs_read.c pvfs_flush.c pvfs_write.c pvfs_fsinfo.c pvfs_qfileinfo.c pvfs_setfileinfo.c pvfs_rename.c pvfs_resolve.c pvfs_shortname.c pvfs_lock.c pvfs_oplock.c pvfs_wait.c pvfs_seek.c pvfs_ioctl.c pvfs_xattr.c pvfs_streams.c pvfs_notify.c pvfs_sys.c xattr_system.c',
+	             autoproto='vfs_posix_proto.h',
+	             subsystem='ntvfs',
+	            init_function='ntvfs_posix_init',
+	             deps='NDR_XATTR attr ntvfs_common MESSAGING LIBWBCLIENT_OLD pvfs_acl posix_eadb',
+	             internal_module=True
+    )
+
+
+bld.SAMBA_LIBRARY('posix_eadb',
+                  source='posix_eadb.c',
+                  deps='tdb tdb-wrap samba-util',
+                  autoproto='posix_eadb_proto.h',
+                  private_library=True)
+
+pyparam_util = bld.pyembed_libname('pyparam_util')
+
+bld.SAMBA_PYTHON('python_xattr_native',
+        source='python/pyxattr_native.c',
+        deps='ndr ldb samdb samba-credentials %s attr' % pyparam_util,
+        realname='samba/xattr_native.so'
+        )
+
+bld.SAMBA_PYTHON('python_posix_eadb',
+	source='python/pyposix_eadb.c',
+	deps='%s posix_eadb tdb' % pyparam_util,
+	realname='samba/posix_eadb.so'
+	)
+
+bld.SAMBA_PYTHON('python_xattr_tdb',
+	source='python/pyxattr_tdb.c',
+	deps='%s xattr_tdb' % pyparam_util,
+	realname='samba/xattr_tdb.so'
+	)
diff --git a/source4/ntvfs/posix/xattr_system.c b/source4/ntvfs/posix/xattr_system.c
new file mode 100644
index 0000000..ebb2010
--- /dev/null
+++ b/source4/ntvfs/posix/xattr_system.c
@@ -0,0 +1,145 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - xattr support using filesystem xattrs
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+
+/*
+  pull a xattr as a blob, from either a file or a file descriptor
+*/
+NTSTATUS pull_xattr_blob_system(struct pvfs_state *pvfs,
+				TALLOC_CTX *mem_ctx,
+				const char *attr_name, 
+				const char *fname, 
+				int fd, 
+				size_t estimated_size,
+				DATA_BLOB *blob)
+{
+	int ret;
+
+	*blob = data_blob_talloc(mem_ctx, NULL, estimated_size+16);
+	if (blob->data == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+again:
+	if (fd != -1) {
+		ret = fgetxattr(fd, attr_name, blob->data, estimated_size);
+	} else {
+		ret = getxattr(fname, attr_name, blob->data, estimated_size);
+	}
+	if (ret == -1 && errno == ERANGE) {
+		estimated_size *= 2;
+		blob->data = talloc_realloc(mem_ctx, blob->data, 
+					    uint8_t, estimated_size);
+		if (blob->data == NULL) {
+			return NT_STATUS_NO_MEMORY;
+		}
+		blob->length = estimated_size;
+		goto again;
+	}
+	if (ret == -1 && errno == EPERM) {
+		struct stat statbuf;
+
+		if (fd != -1) {
+			ret = fstat(fd, &statbuf);
+		} else {
+			ret = stat(fname, &statbuf);
+		}
+		if (ret == 0) {
+			/* check if this is a directory and the sticky bit is set */
+			if (S_ISDIR(statbuf.st_mode) && (statbuf.st_mode & S_ISVTX)) {
+				/* pretend we could not find the xattr */
+
+				data_blob_free(blob);
+				return NT_STATUS_NOT_FOUND;
+
+			} else {
+				/* if not this was probably a legitimate error
+				 * reset ret and errno to the correct values */
+				errno = EPERM;
+				ret = -1;
+			}
+		}
+	}
+
+	if (ret == -1) {
+		data_blob_free(blob);
+		return pvfs_map_errno(pvfs, errno);
+	}
+
+	blob->length = ret;
+
+	return NT_STATUS_OK;
+}
+
+/*
+  push a xattr as a blob, from either a file or a file descriptor
+*/
+NTSTATUS push_xattr_blob_system(struct pvfs_state *pvfs,
+				const char *attr_name, 
+				const char *fname, 
+				int fd, 
+				const DATA_BLOB *blob)
+{
+	int ret;
+
+	if (fd != -1) {
+		ret = fsetxattr(fd, attr_name, blob->data, blob->length, 0);
+	} else {
+		ret = setxattr(fname, attr_name, blob->data, blob->length, 0);
+	}
+	if (ret == -1) {
+		return pvfs_map_errno(pvfs, errno);
+	}
+
+	return NT_STATUS_OK;
+}
+
+
+/*
+  delete a xattr
+*/
+NTSTATUS delete_xattr_system(struct pvfs_state *pvfs, const char *attr_name, 
+			     const char *fname, int fd)
+{
+	int ret;
+
+	if (fd != -1) {
+		ret = fremovexattr(fd, attr_name);
+	} else {
+		ret = removexattr(fname, attr_name);
+	}
+	if (ret == -1) {
+		return pvfs_map_errno(pvfs, errno);
+	}
+
+	return NT_STATUS_OK;
+}
+
+/*
+  unlink a file - cleanup any xattrs
+*/
+NTSTATUS unlink_xattr_system(struct pvfs_state *pvfs, const char *fname)
+{
+	/* nothing needs to be done for filesystem based xattrs */
+	return NT_STATUS_OK;
+}
diff --git a/source4/ntvfs/simple/README b/source4/ntvfs/simple/README
new file mode 100644
index 0000000..f1de5d9
--- /dev/null
+++ b/source4/ntvfs/simple/README
@@ -0,0 +1,10 @@
+This module (ntvfs 'simple') provides a very, very simple posix backend.
+
+WARNING: All file access is done as user 'root'!!!
+	 Only use this module for testing, with only test data!!! 
+
+For activating this module use:
+
+[testshare]
+	path = /tmp/testshare
+	nfvfs handler = simple
diff --git a/source4/ntvfs/simple/svfs.h b/source4/ntvfs/simple/svfs.h
new file mode 100644
index 0000000..e5ad3b9
--- /dev/null
+++ b/source4/ntvfs/simple/svfs.h
@@ -0,0 +1,38 @@
+
+struct svfs_private {
+	struct ntvfs_module_context *ntvfs;
+
+	/* the base directory */
+	char *connectpath;
+
+	/* a linked list of open searches */
+	struct search_state *search;
+
+	/* next available search handle */
+	uint16_t next_search_handle;
+
+	struct svfs_file *open_files;
+};
+
+struct svfs_dir {
+	unsigned int count;
+	char *unix_dir;
+	struct svfs_dirfile {
+		char *name;
+		struct stat st;
+	} *files;
+};
+
+struct svfs_file {
+	struct svfs_file *next, *prev;
+	int fd;
+	struct ntvfs_handle *handle;
+	char *name;
+};
+
+struct search_state {
+	struct search_state *next, *prev;
+	uint16_t handle;
+	unsigned int current_index;
+	struct svfs_dir *dir;
+};
diff --git a/source4/ntvfs/simple/svfs_util.c b/source4/ntvfs/simple/svfs_util.c
new file mode 100644
index 0000000..fd32311
--- /dev/null
+++ b/source4/ntvfs/simple/svfs_util.c
@@ -0,0 +1,189 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   simple NTVFS filesystem backend
+
+   Copyright (C) Andrew Tridgell 2003
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/*
+  utility functions for simple backend
+*/
+
+#include "includes.h"
+#include "system/filesys.h"
+#include "svfs.h"
+#include "system/time.h"
+#include "system/dir.h"
+#include "ntvfs/ntvfs.h"
+#include "ntvfs/simple/proto.h"
+
+/*
+  convert a windows path to a unix path - don't do any mangling or case sensitive handling
+*/
+char *svfs_unix_path(struct ntvfs_module_context *ntvfs,
+		     struct ntvfs_request *req, const char *name)
+{
+	struct svfs_private *p = ntvfs->private_data;
+	char *ret;
+	char *name_lower = strlower_talloc(p, name);
+
+	if (*name != '\\') {
+		ret = talloc_asprintf(req, "%s/%s", p->connectpath, name_lower);
+	} else {
+		ret = talloc_asprintf(req, "%s%s", p->connectpath, name_lower);
+	}
+	all_string_sub(ret, "\\", "/", 0);
+	talloc_free(name_lower);
+	return ret;
+}
+
+
+/*
+  read a directory and find all matching file names and stat info
+  returned names are separate unix and DOS names. The returned names
+  are relative to the directory
+*/
+struct svfs_dir *svfs_list_unix(TALLOC_CTX *mem_ctx, struct ntvfs_request *req, const char *unix_path)
+{
+	char *p, *mask;
+	struct svfs_dir *dir;
+	DIR *odir;
+	struct dirent *dent;
+	unsigned int allocated = 0;
+	char *low_mask;
+
+	dir = talloc(mem_ctx, struct svfs_dir);
+	if (!dir) { return NULL; }
+
+	dir->count = 0;
+	dir->files = 0;
+
+	/* find the base directory */
+	p = strrchr(unix_path, '/');
+	if (!p) { return NULL; }
+
+	dir->unix_dir = talloc_strndup(mem_ctx, unix_path, PTR_DIFF(p, unix_path));
+	if (!dir->unix_dir) { return NULL; }
+
+	/* the wildcard pattern is the last part */
+	mask = p+1;
+
+	low_mask = strlower_talloc(mem_ctx, mask);
+	if (!low_mask) { return NULL; }
+
+	odir = opendir(dir->unix_dir);
+	if (!odir) { return NULL; }
+
+	while ((dent = readdir(odir))) {
+		unsigned int i = dir->count;
+		char *full_name;
+		char *low_name;
+
+		if (strchr(dent->d_name, ':') && !strchr(unix_path, ':')) {
+			/* don't show streams in dir listing */
+			continue;
+		}
+
+		low_name = strlower_talloc(mem_ctx, dent->d_name);
+		if (!low_name) { continue; }
+
+		/* check it matches the wildcard pattern */
+		if (ms_fnmatch_protocol(low_mask, low_name, PROTOCOL_NT1,
+					false) != 0) {
+			continue;
+		}
+		
+		if (dir->count >= allocated) {
+			allocated = (allocated + 100) * 1.2;
+			dir->files = talloc_realloc(dir, dir->files, struct svfs_dirfile, allocated);
+			if (!dir->files) { 
+				closedir(odir);
+				return NULL;
+			}
+		}
+
+		dir->files[i].name = low_name;
+		if (!dir->files[i].name) { continue; }
+
+		full_name = talloc_asprintf(mem_ctx, "%s/%s", dir->unix_dir,
+					    dir->files[i].name);
+		if (!full_name) { continue; }
+
+		if (stat(full_name, &dir->files[i].st) == 0) { 
+			dir->count++;
+		}
+
+		talloc_free(full_name);
+	}
+
+	closedir(odir);
+
+	return dir;
+}
+
+/*
+  read a directory and find all matching file names and stat info
+  returned names are separate unix and DOS names. The returned names
+  are relative to the directory
+*/
+struct svfs_dir *svfs_list(struct ntvfs_module_context *ntvfs, struct ntvfs_request *req, const char *pattern)
+{
+	struct svfs_private *p = ntvfs->private_data;
+	char *unix_path;
+
+	unix_path = svfs_unix_path(ntvfs, req, pattern);
+	if (!unix_path) { return NULL; }
+
+	return svfs_list_unix(p, req, unix_path);
+}
+
+
+/*******************************************************************
+set the time on a file via file descriptor
+*******************************************************************/
+int svfs_file_utime(int fd, struct utimbuf *times)
+{
+	char *fd_path = NULL;
+	int ret;
+
+	ret = asprintf(&fd_path, "/proc/self/%d", fd);
+	if (ret == -1) {
+		errno = ENOMEM;
+		return -1;
+	}
+
+	if (!fd_path) {
+		errno = ENOMEM;
+		return -1;
+	}
+	
+	ret = utime(fd_path, times);
+	free(fd_path);
+	return ret;
+}
+
+
+/*
+  map a unix file attrib to a DOS attribute
+*/
+uint16_t svfs_unix_to_dos_attrib(mode_t mode)
+{
+	uint16_t ret = 0;
+	if (S_ISDIR(mode)) ret |= FILE_ATTRIBUTE_DIRECTORY;
+	if (!(mode & S_IWUSR)) ret |= FILE_ATTRIBUTE_READONLY;
+	return ret;
+}
+
diff --git a/source4/ntvfs/simple/vfs_simple.c b/source4/ntvfs/simple/vfs_simple.c
new file mode 100644
index 0000000..000da41
--- /dev/null
+++ b/source4/ntvfs/simple/vfs_simple.c
@@ -0,0 +1,1112 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   simple NTVFS filesystem backend
+
+   Copyright (C) Andrew Tridgell 2003
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/*
+  this implements a very simple NTVFS filesystem backend. 
+  
+  this backend largely ignores the POSIX -> CIFS mappings, just doing absolutely
+  minimal work to give a working backend.
+*/
+
+#include "includes.h"
+#include "system/dir.h"
+#include "system/filesys.h"
+#include "svfs.h"
+#include "system/time.h"
+#include "../lib/util/dlinklist.h"
+#include "ntvfs/ntvfs.h"
+#include "ntvfs/simple/proto.h"
+
+#ifndef O_DIRECTORY
+#define O_DIRECTORY 0
+#endif
+
+#define CHECK_READ_ONLY(req) do { if (share_bool_option(ntvfs->ctx->config, SHARE_READONLY, true)) return NT_STATUS_ACCESS_DENIED; } while (0)
+
+/*
+  connect to a share - used when a tree_connect operation comes
+  in. For a disk based backend we needs to ensure that the base
+  directory exists (tho it doesn't need to be accessible by the user,
+  that comes later)
+*/
+static NTSTATUS svfs_connect(struct ntvfs_module_context *ntvfs,
+			     struct ntvfs_request *req,
+			     union smb_tcon* tcon)
+{
+	struct stat st;
+	struct svfs_private *p;
+	struct share_config *scfg = ntvfs->ctx->config;
+	const char *sharename;
+
+	switch (tcon->generic.level) {
+	case RAW_TCON_TCON:
+		sharename = tcon->tcon.in.service;
+		break;
+	case RAW_TCON_TCONX:
+		sharename = tcon->tconx.in.path;
+		break;
+	case RAW_TCON_SMB2:
+		sharename = tcon->smb2.in.path;
+		break;
+	default:
+		return NT_STATUS_INVALID_LEVEL;
+	}
+
+	if (strncmp(sharename, "\\\\", 2) == 0) {
+		char *p2 = strchr(sharename+2, '\\');
+		if (p2) {
+			sharename = p2 + 1;
+		}
+	}
+
+	p = talloc(ntvfs, struct svfs_private);
+	NT_STATUS_HAVE_NO_MEMORY(p);
+	p->ntvfs = ntvfs;
+	p->next_search_handle = 0;
+	p->connectpath = share_string_option(p, scfg, SHARE_PATH, "");
+	p->open_files = NULL;
+	p->search = NULL;
+
+	/* the directory must exist */
+	if (stat(p->connectpath, &st) != 0 || !S_ISDIR(st.st_mode)) {
+		DEBUG(0,("'%s' is not a directory, when connecting to [%s]\n", 
+			 p->connectpath, sharename));
+		return NT_STATUS_BAD_NETWORK_NAME;
+	}
+
+	ntvfs->ctx->fs_type = talloc_strdup(ntvfs->ctx, "NTFS");
+	NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->fs_type);
+	ntvfs->ctx->dev_type = talloc_strdup(ntvfs->ctx, "A:");
+	NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->dev_type);
+
+	if (tcon->generic.level == RAW_TCON_TCONX) {
+		tcon->tconx.out.fs_type = ntvfs->ctx->fs_type;
+		tcon->tconx.out.dev_type = ntvfs->ctx->dev_type;
+	}
+
+	ntvfs->private_data = p;
+
+	return NT_STATUS_OK;
+}
+
+/*
+  disconnect from a share
+*/
+static NTSTATUS svfs_disconnect(struct ntvfs_module_context *ntvfs)
+{
+	return NT_STATUS_OK;
+}
+
+/*
+  find open file handle given fd
+*/
+static struct svfs_file *find_fd(struct svfs_private *sp, struct ntvfs_handle *handle)
+{
+	struct svfs_file *f;
+	void *p;
+
+	p = ntvfs_handle_get_backend_data(handle, sp->ntvfs);
+	if (!p) return NULL;
+
+	f = talloc_get_type(p, struct svfs_file);
+	if (!f) return NULL;
+
+	return f;
+}
+
+/*
+  delete a file - the dirtype specifies the file types to include in the search. 
+  The name can contain CIFS wildcards, but rarely does (except with OS/2 clients)
+*/
+static NTSTATUS svfs_unlink(struct ntvfs_module_context *ntvfs,
+			    struct ntvfs_request *req,
+			    union smb_unlink *unl)
+{
+	char *unix_path;
+
+	CHECK_READ_ONLY(req);
+
+	unix_path = svfs_unix_path(ntvfs, req, unl->unlink.in.pattern);
+
+	/* ignoring wildcards ... */
+	if (unlink(unix_path) == -1) {
+		return map_nt_error_from_unix_common(errno);
+	}
+
+	return NT_STATUS_OK;
+}
+
+
+/*
+  ioctl interface - we don't do any
+*/
+static NTSTATUS svfs_ioctl(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req, union smb_ioctl *io)
+{
+	return NT_STATUS_INVALID_PARAMETER;
+}
+
+/*
+  check if a directory exists
+*/
+static NTSTATUS svfs_chkpath(struct ntvfs_module_context *ntvfs,
+			     struct ntvfs_request *req,
+			     union smb_chkpath *cp)
+{
+	char *unix_path;
+	struct stat st;
+
+	unix_path = svfs_unix_path(ntvfs, req, cp->chkpath.in.path);
+
+	if (stat(unix_path, &st) == -1) {
+		return map_nt_error_from_unix_common(errno);
+	}
+
+	if (!S_ISDIR(st.st_mode)) {
+		return NT_STATUS_NOT_A_DIRECTORY;
+	}
+
+	return NT_STATUS_OK;
+}
+
+/*
+  build a file_id from a stat struct
+*/
+static uint64_t svfs_file_id(struct stat *st)
+{
+	uint64_t ret = st->st_ino;
+	ret <<= 32;
+	ret |= st->st_dev;
+	return ret;
+}
+
+/*
+  approximately map a struct stat to a generic fileinfo struct
+*/
+static NTSTATUS svfs_map_fileinfo(struct ntvfs_module_context *ntvfs,
+				  struct ntvfs_request *req, union smb_fileinfo *info, 
+				  struct stat *st, const char *unix_path)
+{
+	struct svfs_dir *dir = NULL;
+	char *pattern = NULL;
+	int i, ret;
+	const char *s, *short_name;
+
+	s = strrchr(unix_path, '/');
+	if (s) {
+		short_name = s+1;
+	} else {
+		short_name = "";
+	}
+
+	ret = asprintf(&pattern, "%s:*", unix_path);
+	if (ret == -1) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	if (pattern) {
+		dir = svfs_list_unix(req, req, pattern);
+	}
+
+	unix_to_nt_time(&info->generic.out.create_time, st->st_ctime);
+	unix_to_nt_time(&info->generic.out.access_time, st->st_atime);
+	unix_to_nt_time(&info->generic.out.write_time,  st->st_mtime);
+	unix_to_nt_time(&info->generic.out.change_time, st->st_mtime);
+	info->generic.out.alloc_size = st->st_size;
+	info->generic.out.size = st->st_size;
+	info->generic.out.attrib = svfs_unix_to_dos_attrib(st->st_mode);
+	info->generic.out.alloc_size = st->st_blksize * st->st_blocks;
+	info->generic.out.nlink = st->st_nlink;
+	info->generic.out.directory = S_ISDIR(st->st_mode) ? 1 : 0;
+	info->generic.out.file_id = svfs_file_id(st);
+	/* REWRITE: TODO stuff in here */
+	info->generic.out.delete_pending = 0;
+	info->generic.out.ea_size = 0;
+	info->generic.out.num_eas = 0;
+	info->generic.out.fname.s = talloc_strdup(req, short_name);
+	info->generic.out.alt_fname.s = talloc_strdup(req, short_name);
+	info->generic.out.compressed_size = 0;
+	info->generic.out.format = 0;
+	info->generic.out.unit_shift = 0;
+	info->generic.out.chunk_shift = 0;
+	info->generic.out.cluster_shift = 0;
+	
+	info->generic.out.access_flags = 0;
+	info->generic.out.position = 0;
+	info->generic.out.mode = 0;
+	info->generic.out.alignment_requirement = 0;
+	info->generic.out.reparse_tag = 0;
+	info->generic.out.num_streams = 0;
+	/* setup a single data stream */
+	info->generic.out.num_streams = 1 + (dir?dir->count:0);
+	info->generic.out.streams = talloc_array(req, 
+						   struct stream_struct,
+						   info->generic.out.num_streams);
+	if (!info->generic.out.streams) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	info->generic.out.streams[0].size = st->st_size;
+	info->generic.out.streams[0].alloc_size = st->st_size;
+	info->generic.out.streams[0].stream_name.s = talloc_strdup(req,"::$DATA");
+
+	for (i=0;dir && i<dir->count;i++) {
+		s = strchr(dir->files[i].name, ':');
+		info->generic.out.streams[1+i].size = dir->files[i].st.st_size;
+		info->generic.out.streams[1+i].alloc_size = dir->files[i].st.st_size;
+		info->generic.out.streams[1+i].stream_name.s = s?s:dir->files[i].name;
+	}
+
+	return NT_STATUS_OK;
+}
+
+/*
+  return info on a pathname
+*/
+static NTSTATUS svfs_qpathinfo(struct ntvfs_module_context *ntvfs,
+			       struct ntvfs_request *req, union smb_fileinfo *info)
+{
+	char *unix_path;
+	struct stat st;
+
+	DEBUG(19,("svfs_qpathinfo: file %s level 0x%x\n", info->generic.in.file.path, info->generic.level));
+	if (info->generic.level != RAW_FILEINFO_GENERIC) {
+		return ntvfs_map_qpathinfo(ntvfs, req, info);
+	}
+	
+	unix_path = svfs_unix_path(ntvfs, req, info->generic.in.file.path);
+	DEBUG(19,("svfs_qpathinfo: file %s\n", unix_path));
+	if (stat(unix_path, &st) == -1) {
+		DEBUG(19,("svfs_qpathinfo: file %s errno=%d\n", unix_path, errno));
+		return map_nt_error_from_unix_common(errno);
+	}
+	DEBUG(19,("svfs_qpathinfo: file %s, stat done\n", unix_path));
+	return svfs_map_fileinfo(ntvfs, req, info, &st, unix_path);
+}
+
+/*
+  query info on a open file
+*/
+static NTSTATUS svfs_qfileinfo(struct ntvfs_module_context *ntvfs,
+			       struct ntvfs_request *req, union smb_fileinfo *info)
+{
+	struct svfs_private *p = ntvfs->private_data;
+	struct svfs_file *f;
+	struct stat st;
+
+	if (info->generic.level != RAW_FILEINFO_GENERIC) {
+		return ntvfs_map_qfileinfo(ntvfs, req, info);
+	}
+
+	f = find_fd(p, info->generic.in.file.ntvfs);
+	if (!f) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+	
+	if (fstat(f->fd, &st) == -1) {
+		return map_nt_error_from_unix_common(errno);
+	}
+
+	return svfs_map_fileinfo(ntvfs, req,info, &st, f->name);
+}
+
+
+/*
+  open a file
+*/
+static NTSTATUS svfs_open(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req, union smb_open *io)
+{
+	struct svfs_private *p = ntvfs->private_data;
+	char *unix_path;
+	struct stat st;
+	int fd, flags;
+	struct svfs_file *f;
+	int create_flags, rdwr_flags;
+	bool readonly;
+	NTSTATUS status;
+	struct ntvfs_handle *handle;
+	
+	if (io->generic.level != RAW_OPEN_GENERIC) {
+		return ntvfs_map_open(ntvfs, req, io);
+	}
+
+	readonly = share_bool_option(ntvfs->ctx->config, SHARE_READONLY, SHARE_READONLY_DEFAULT);
+	if (readonly) {
+		create_flags = 0;
+		rdwr_flags = O_RDONLY;
+	} else {
+		create_flags = O_CREAT;
+		rdwr_flags = O_RDWR;
+	}
+
+	unix_path = svfs_unix_path(ntvfs, req, io->ntcreatex.in.fname);
+
+	switch (io->generic.in.open_disposition) {
+	case NTCREATEX_DISP_SUPERSEDE:
+	case NTCREATEX_DISP_OVERWRITE_IF:
+		flags = create_flags | O_TRUNC;
+		break;
+	case NTCREATEX_DISP_OPEN:
+	case NTCREATEX_DISP_OVERWRITE:
+		flags = 0;
+		break;
+	case NTCREATEX_DISP_CREATE:
+		flags = create_flags | O_EXCL;
+		break;
+	case NTCREATEX_DISP_OPEN_IF:
+		flags = create_flags;
+		break;
+	default:
+		flags = 0;
+		break;
+	}
+	
+	flags |= rdwr_flags;
+
+	if (io->generic.in.create_options & NTCREATEX_OPTIONS_DIRECTORY) {
+		flags = O_RDONLY | O_DIRECTORY;
+		if (readonly) {
+			goto do_open;
+		}
+		switch (io->generic.in.open_disposition) {
+		case NTCREATEX_DISP_CREATE:
+			if (mkdir(unix_path, 0755) == -1) {
+				DEBUG(9,("svfs_open: mkdir %s errno=%d\n", unix_path, errno));
+				return map_nt_error_from_unix_common(errno);
+			}
+			break;
+		case NTCREATEX_DISP_OPEN_IF:
+			if (mkdir(unix_path, 0755) == -1 && errno != EEXIST) {
+				DEBUG(9,("svfs_open: mkdir %s errno=%d\n", unix_path, errno));
+				return map_nt_error_from_unix_common(errno);
+			}
+			break;
+		}
+	}
+
+do_open:
+	fd = open(unix_path, flags, 0644);
+	if (fd == -1) {
+		return map_nt_error_from_unix_common(errno);
+	}
+
+	if (fstat(fd, &st) == -1) {
+		DEBUG(9,("svfs_open: fstat errno=%d\n", errno));
+		close(fd);
+		return map_nt_error_from_unix_common(errno);
+	}
+
+	status = ntvfs_handle_new(ntvfs, req, &handle);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	f = talloc(handle, struct svfs_file);
+	if (f == NULL) {
+		close(fd);
+		return NT_STATUS_NO_MEMORY;
+	}
+	f->fd = fd;
+	f->name = talloc_strdup(f, unix_path);
+	NT_STATUS_HAVE_NO_MEMORY(f->name);
+
+	DLIST_ADD(p->open_files, f);
+
+	status = ntvfs_handle_set_backend_data(handle, ntvfs, f);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	ZERO_STRUCT(io->generic.out);
+	
+	unix_to_nt_time(&io->generic.out.create_time, st.st_ctime);
+	unix_to_nt_time(&io->generic.out.access_time, st.st_atime);
+	unix_to_nt_time(&io->generic.out.write_time,  st.st_mtime);
+	unix_to_nt_time(&io->generic.out.change_time, st.st_mtime);
+	io->generic.out.file.ntvfs = handle;
+	io->generic.out.alloc_size = st.st_size;
+	io->generic.out.size = st.st_size;
+	io->generic.out.attrib = svfs_unix_to_dos_attrib(st.st_mode);
+	io->generic.out.is_directory = S_ISDIR(st.st_mode) ? 1 : 0;
+
+	return NT_STATUS_OK;
+}
+
+/*
+  create a directory
+*/
+static NTSTATUS svfs_mkdir(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req, union smb_mkdir *md)
+{
+	char *unix_path;
+
+	CHECK_READ_ONLY(req);
+
+	if (md->generic.level != RAW_MKDIR_MKDIR) {
+		return NT_STATUS_INVALID_LEVEL;
+	}
+
+	unix_path = svfs_unix_path(ntvfs, req, md->mkdir.in.path);
+
+	if (mkdir(unix_path, 0777) == -1) {
+		return map_nt_error_from_unix_common(errno);
+	}
+
+	return NT_STATUS_OK;
+}
+
+/*
+  remove a directory
+*/
+static NTSTATUS svfs_rmdir(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req, struct smb_rmdir *rd)
+{
+	char *unix_path;
+
+	CHECK_READ_ONLY(req);
+
+	unix_path = svfs_unix_path(ntvfs, req, rd->in.path);
+
+	if (rmdir(unix_path) == -1) {
+		return map_nt_error_from_unix_common(errno);
+	}
+
+	return NT_STATUS_OK;
+}
+
+/*
+  rename a set of files
+*/
+static NTSTATUS svfs_rename(struct ntvfs_module_context *ntvfs,
+			    struct ntvfs_request *req, union smb_rename *ren)
+{
+	char *unix_path1, *unix_path2;
+
+	CHECK_READ_ONLY(req);
+
+	if (ren->generic.level != RAW_RENAME_RENAME) {
+		return NT_STATUS_INVALID_LEVEL;
+	}
+
+	unix_path1 = svfs_unix_path(ntvfs, req, ren->rename.in.pattern1);
+	unix_path2 = svfs_unix_path(ntvfs, req, ren->rename.in.pattern2);
+
+	if (rename(unix_path1, unix_path2) == -1) {
+		return map_nt_error_from_unix_common(errno);
+	}
+	
+	return NT_STATUS_OK;
+}
+
+/*
+  copy a set of files
+*/
+static NTSTATUS svfs_copy(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req, struct smb_copy *cp)
+{
+	return NT_STATUS_NOT_SUPPORTED;
+}
+
+/*
+  read from a file
+*/
+static NTSTATUS svfs_read(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req, union smb_read *rd)
+{
+	struct svfs_private *p = ntvfs->private_data;
+	struct svfs_file *f;
+	ssize_t ret;
+
+	if (rd->generic.level != RAW_READ_READX) {
+		return NT_STATUS_NOT_SUPPORTED;
+	}
+
+	f = find_fd(p, rd->readx.in.file.ntvfs);
+	if (!f) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	ret = pread(f->fd, 
+		    rd->readx.out.data, 
+		    rd->readx.in.maxcnt,
+		    rd->readx.in.offset);
+	if (ret == -1) {
+		return map_nt_error_from_unix_common(errno);
+	}
+
+	rd->readx.out.nread = ret;
+	rd->readx.out.remaining = 0; /* should fill this in? */
+	rd->readx.out.compaction_mode = 0; 
+
+	return NT_STATUS_OK;
+}
+
+/*
+  write to a file
+*/
+static NTSTATUS svfs_write(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req, union smb_write *wr)
+{
+	struct svfs_private *p = ntvfs->private_data;
+	struct svfs_file *f;
+	ssize_t ret;
+
+	if (wr->generic.level != RAW_WRITE_WRITEX) {
+		return ntvfs_map_write(ntvfs, req, wr);
+	}
+
+	CHECK_READ_ONLY(req);
+
+	f = find_fd(p, wr->writex.in.file.ntvfs);
+	if (!f) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	ret = pwrite(f->fd, 
+		     wr->writex.in.data, 
+		     wr->writex.in.count,
+		     wr->writex.in.offset);
+	if (ret == -1) {
+		return map_nt_error_from_unix_common(errno);
+	}
+		
+	wr->writex.out.nwritten = ret;
+	wr->writex.out.remaining = 0; /* should fill this in? */
+	
+	return NT_STATUS_OK;
+}
+
+/*
+  seek in a file
+*/
+static NTSTATUS svfs_seek(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req,
+			  union smb_seek *io)
+{
+	return NT_STATUS_NOT_SUPPORTED;
+}
+
+/*
+  flush a file
+*/
+static NTSTATUS svfs_flush(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req,
+			   union smb_flush *io)
+{
+	struct svfs_private *p = ntvfs->private_data;
+	struct svfs_file *f;
+
+	switch (io->generic.level) {
+	case RAW_FLUSH_FLUSH:
+	case RAW_FLUSH_SMB2:
+		/* ignore the additional unknown option in SMB2 */
+		f = find_fd(p, io->generic.in.file.ntvfs);
+		if (!f) {
+			return NT_STATUS_INVALID_HANDLE;
+		}
+		fsync(f->fd);
+		return NT_STATUS_OK;
+
+	case RAW_FLUSH_ALL:
+		for (f=p->open_files;f;f=f->next) {
+			fsync(f->fd);
+		}
+		return NT_STATUS_OK;
+	}
+
+	return NT_STATUS_INVALID_LEVEL;
+}
+
+/*
+  close a file
+*/
+static NTSTATUS svfs_close(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req,
+			   union smb_close *io)
+{
+	struct svfs_private *p = ntvfs->private_data;
+	struct svfs_file *f;
+
+	if (io->generic.level != RAW_CLOSE_CLOSE) {
+		/* we need a mapping function */
+		return NT_STATUS_INVALID_LEVEL;
+	}
+
+	f = find_fd(p, io->close.in.file.ntvfs);
+	if (!f) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	if (close(f->fd) == -1) {
+		return map_nt_error_from_unix_common(errno);
+	}
+
+	DLIST_REMOVE(p->open_files, f);
+	talloc_free(f->name);
+	talloc_free(f);
+
+	return NT_STATUS_OK;
+}
+
+/*
+  exit - closing files
+*/
+static NTSTATUS svfs_exit(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req)
+{
+	return NT_STATUS_NOT_SUPPORTED;
+}
+
+/*
+  logoff - closing files
+*/
+static NTSTATUS svfs_logoff(struct ntvfs_module_context *ntvfs,
+			    struct ntvfs_request *req)
+{
+	return NT_STATUS_NOT_SUPPORTED;
+}
+
+/*
+  setup for an async call
+*/
+static NTSTATUS svfs_async_setup(struct ntvfs_module_context *ntvfs,
+				 struct ntvfs_request *req, 
+				 void *private_data)
+{
+	return NT_STATUS_OK;
+}
+
+/*
+  cancel an async call
+*/
+static NTSTATUS svfs_cancel(struct ntvfs_module_context *ntvfs, struct ntvfs_request *req)
+{
+	return NT_STATUS_UNSUCCESSFUL;
+}
+
+/*
+  lock a byte range
+*/
+static NTSTATUS svfs_lock(struct ntvfs_module_context *ntvfs,
+			  struct ntvfs_request *req, union smb_lock *lck)
+{
+	DEBUG(0,("REWRITE: not doing byte range locking!\n"));
+	return NT_STATUS_OK;
+}
+
+/*
+  set info on a pathname
+*/
+static NTSTATUS svfs_setpathinfo(struct ntvfs_module_context *ntvfs,
+				 struct ntvfs_request *req, union smb_setfileinfo *st)
+{
+	CHECK_READ_ONLY(req);
+
+	return NT_STATUS_NOT_SUPPORTED;
+}
+
+/*
+  set info on a open file
+*/
+static NTSTATUS svfs_setfileinfo(struct ntvfs_module_context *ntvfs,
+				 struct ntvfs_request *req, 
+				 union smb_setfileinfo *info)
+{
+	struct svfs_private *p = ntvfs->private_data;
+	struct svfs_file *f;
+	struct utimbuf unix_times;
+
+	CHECK_READ_ONLY(req);
+
+	f = find_fd(p, info->generic.in.file.ntvfs);
+	if (!f) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+	
+	switch (info->generic.level) {
+	case RAW_SFILEINFO_END_OF_FILE_INFO:
+	case RAW_SFILEINFO_END_OF_FILE_INFORMATION:
+		if (ftruncate(f->fd, 
+			      info->end_of_file_info.in.size) == -1) {
+			return map_nt_error_from_unix_common(errno);
+		}
+		break;
+	case RAW_SFILEINFO_SETATTRE:
+		unix_times.actime = info->setattre.in.access_time;
+		unix_times.modtime = info->setattre.in.write_time;
+
+		if (unix_times.actime == 0 && unix_times.modtime == 0) {
+			break;
+		} 
+
+		/* set modify time = to access time if modify time was 0 */
+		if (unix_times.actime != 0 && unix_times.modtime == 0) {
+			unix_times.modtime = unix_times.actime;
+		}
+
+		/* Set the date on this file */
+		if (svfs_file_utime(f->fd, &unix_times) != 0) {
+			return NT_STATUS_ACCESS_DENIED;
+		}
+  		break;
+	default:
+		DEBUG(2,("svfs_setfileinfo: level %d not implemented\n", 
+			 info->generic.level));
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+	return NT_STATUS_OK;
+}
+
+
+/*
+  return filesystem space info
+*/
+static NTSTATUS svfs_fsinfo(struct ntvfs_module_context *ntvfs,
+			    struct ntvfs_request *req, union smb_fsinfo *fs)
+{
+	struct svfs_private *p = ntvfs->private_data;
+	struct stat st;
+
+	if (fs->generic.level != RAW_QFS_GENERIC) {
+		return ntvfs_map_fsinfo(ntvfs, req, fs);
+	}
+
+	if (sys_fsusage(p->connectpath,
+			&fs->generic.out.blocks_free, 
+			&fs->generic.out.blocks_total) == -1) {
+		return map_nt_error_from_unix_common(errno);
+	}
+
+	fs->generic.out.block_size = 512;
+
+	if (stat(p->connectpath, &st) != 0) {
+		return NT_STATUS_DISK_CORRUPT_ERROR;
+	}
+	
+	fs->generic.out.fs_id = st.st_ino;
+	unix_to_nt_time(&fs->generic.out.create_time, st.st_ctime);
+	fs->generic.out.serial_number = st.st_ino;
+	fs->generic.out.fs_attr = 0;
+	fs->generic.out.max_file_component_length = 255;
+	fs->generic.out.device_type = 0;
+	fs->generic.out.device_characteristics = 0;
+	fs->generic.out.quota_soft = 0;
+	fs->generic.out.quota_hard = 0;
+	fs->generic.out.quota_flags = 0;
+	fs->generic.out.volume_name = talloc_strdup(req, ntvfs->ctx->config->name);
+	fs->generic.out.fs_type = ntvfs->ctx->fs_type;
+
+	return NT_STATUS_OK;
+}
+
+#if 0
+/*
+  return filesystem attribute info
+*/
+static NTSTATUS svfs_fsattr(struct ntvfs_module_context *ntvfs,
+			    struct ntvfs_request *req, union smb_fsattr *fs)
+{
+	struct stat st;
+	struct svfs_private *p = ntvfs->private_data;
+
+	if (fs->generic.level != RAW_FSATTR_GENERIC) {
+		return ntvfs_map_fsattr(ntvfs, req, fs);
+	}
+
+	if (stat(p->connectpath, &st) == -1) {
+		return map_nt_error_from_unix_common(errno);
+	}
+
+	unix_to_nt_time(&fs->generic.out.create_time, st.st_ctime);
+	fs->generic.out.fs_attr = 
+		FILE_CASE_PRESERVED_NAMES | 
+		FILE_CASE_SENSITIVE_SEARCH | 
+		FILE_PERSISTENT_ACLS;
+	fs->generic.out.max_file_component_length = 255;
+	fs->generic.out.serial_number = 1;
+	fs->generic.out.fs_type = talloc_strdup(req, "NTFS");
+	fs->generic.out.volume_name = talloc_strdup(req, 
+						    lpcfg_servicename(req->tcon->service));
+
+	return NT_STATUS_OK;
+}
+#endif
+
+/*
+  return print queue info
+*/
+static NTSTATUS svfs_lpq(struct ntvfs_module_context *ntvfs,
+			 struct ntvfs_request *req, union smb_lpq *lpq)
+{
+	return NT_STATUS_NOT_SUPPORTED;
+}
+
+/* 
+   list files in a directory matching a wildcard pattern
+*/
+static NTSTATUS svfs_search_first(struct ntvfs_module_context *ntvfs,
+				  struct ntvfs_request *req, union smb_search_first *io, 
+				  void *search_private, 
+				  bool (*callback)(void *, const union smb_search_data *))
+{
+	struct svfs_dir *dir;
+	int i;
+	struct svfs_private *p = ntvfs->private_data;
+	struct search_state *search;
+	union smb_search_data file;
+	unsigned int max_count;
+
+	if (io->generic.level != RAW_SEARCH_TRANS2) {
+		return NT_STATUS_NOT_SUPPORTED;
+	}
+
+	if (io->generic.data_level != RAW_SEARCH_DATA_BOTH_DIRECTORY_INFO) {
+		return NT_STATUS_NOT_SUPPORTED;
+	}
+
+	search = talloc_zero(p, struct search_state);
+	if (!search) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	max_count = io->t2ffirst.in.max_count;
+
+	dir = svfs_list(ntvfs, req, io->t2ffirst.in.pattern);
+	if (!dir) {
+		return NT_STATUS_FOOBAR;
+	}
+
+	search->handle = p->next_search_handle;
+	search->dir = dir;
+
+	if (dir->count < max_count) {
+		max_count = dir->count;
+	}
+
+	for (i=0; i < max_count;i++) {
+		ZERO_STRUCT(file);
+		unix_to_nt_time(&file.both_directory_info.create_time, dir->files[i].st.st_ctime);
+		unix_to_nt_time(&file.both_directory_info.access_time, dir->files[i].st.st_atime);
+		unix_to_nt_time(&file.both_directory_info.write_time,  dir->files[i].st.st_mtime);
+		unix_to_nt_time(&file.both_directory_info.change_time, dir->files[i].st.st_mtime);
+		file.both_directory_info.name.s = dir->files[i].name;
+		file.both_directory_info.short_name.s = dir->files[i].name;
+		file.both_directory_info.size = dir->files[i].st.st_size;
+		file.both_directory_info.attrib = svfs_unix_to_dos_attrib(dir->files[i].st.st_mode);
+
+		if (!callback(search_private, &file)) {
+			break;
+		}
+	}
+
+	search->current_index = i;
+
+	io->t2ffirst.out.count = i;
+	io->t2ffirst.out.handle = search->handle;
+	io->t2ffirst.out.end_of_search = (i == dir->count) ? 1 : 0;
+
+	/* work out if we are going to keep the search state */
+	if ((io->t2ffirst.in.flags & FLAG_TRANS2_FIND_CLOSE) ||
+	    ((io->t2ffirst.in.flags & FLAG_TRANS2_FIND_CLOSE_IF_END) && (i == dir->count))) {
+		talloc_free(search);
+	} else {
+		p->next_search_handle++;
+		DLIST_ADD(p->search, search);
+	}
+
+	return NT_STATUS_OK;
+}
+
+/* continue a search */
+static NTSTATUS svfs_search_next(struct ntvfs_module_context *ntvfs,
+				 struct ntvfs_request *req, union smb_search_next *io, 
+				 void *search_private, 
+				 bool (*callback)(void *, const union smb_search_data *))
+{
+	struct svfs_dir *dir;
+	int i;
+	struct svfs_private *p = ntvfs->private_data;
+	struct search_state *search;
+	union smb_search_data file;
+	unsigned int max_count;
+
+	if (io->generic.level != RAW_SEARCH_TRANS2) {
+		return NT_STATUS_NOT_SUPPORTED;
+	}
+
+	if (io->generic.data_level != RAW_SEARCH_DATA_BOTH_DIRECTORY_INFO) {
+		return NT_STATUS_NOT_SUPPORTED;
+	}
+
+	for (search=p->search; search; search = search->next) {
+		if (search->handle == io->t2fnext.in.handle) break;
+	}
+	
+	if (!search) {
+		/* we didn't find the search handle */
+		return NT_STATUS_FOOBAR;
+	}
+
+	dir = search->dir;
+
+	/* the client might be asking for something other than just continuing
+	   with the search */
+	if (!(io->t2fnext.in.flags & FLAG_TRANS2_FIND_CONTINUE) &&
+	    (io->t2fnext.in.flags & FLAG_TRANS2_FIND_REQUIRE_RESUME) &&
+	    io->t2fnext.in.last_name && *io->t2fnext.in.last_name) {
+		/* look backwards first */
+		for (i=search->current_index; i > 0; i--) {
+			if (strcmp(io->t2fnext.in.last_name, dir->files[i-1].name) == 0) {
+				search->current_index = i;
+				goto found;
+			}
+		}
+
+		/* then look forwards */
+		for (i=search->current_index+1; i <= dir->count; i++) {
+			if (strcmp(io->t2fnext.in.last_name, dir->files[i-1].name) == 0) {
+				search->current_index = i;
+				goto found;
+			}
+		}
+	}
+
+found:	
+	max_count = search->current_index + io->t2fnext.in.max_count;
+
+	if (max_count > dir->count) {
+		max_count = dir->count;
+	}
+
+	for (i = search->current_index; i < max_count;i++) {
+		ZERO_STRUCT(file);
+		unix_to_nt_time(&file.both_directory_info.create_time, dir->files[i].st.st_ctime);
+		unix_to_nt_time(&file.both_directory_info.access_time, dir->files[i].st.st_atime);
+		unix_to_nt_time(&file.both_directory_info.write_time,  dir->files[i].st.st_mtime);
+		unix_to_nt_time(&file.both_directory_info.change_time, dir->files[i].st.st_mtime);
+		file.both_directory_info.name.s = dir->files[i].name;
+		file.both_directory_info.short_name.s = dir->files[i].name;
+		file.both_directory_info.size = dir->files[i].st.st_size;
+		file.both_directory_info.attrib = svfs_unix_to_dos_attrib(dir->files[i].st.st_mode);
+
+		if (!callback(search_private, &file)) {
+			break;
+		}
+	}
+
+	io->t2fnext.out.count = i - search->current_index;
+	io->t2fnext.out.end_of_search = (i == dir->count) ? 1 : 0;
+
+	search->current_index = i;
+
+	/* work out if we are going to keep the search state */
+	if ((io->t2fnext.in.flags & FLAG_TRANS2_FIND_CLOSE) ||
+	    ((io->t2fnext.in.flags & FLAG_TRANS2_FIND_CLOSE_IF_END) && (i == dir->count))) {
+		DLIST_REMOVE(p->search, search);
+		talloc_free(search);
+	}
+
+	return NT_STATUS_OK;
+}
+
+/* close a search */
+static NTSTATUS svfs_search_close(struct ntvfs_module_context *ntvfs,
+				  struct ntvfs_request *req, union smb_search_close *io)
+{
+	struct svfs_private *p = ntvfs->private_data;
+	struct search_state *search;
+
+	for (search=p->search; search; search = search->next) {
+		if (search->handle == io->findclose.in.handle) break;
+	}
+	
+	if (!search) {
+		/* we didn't find the search handle */
+		return NT_STATUS_FOOBAR;
+	}
+
+	DLIST_REMOVE(p->search, search);
+	talloc_free(search);
+
+	return NT_STATUS_OK;
+}
+
+/* SMBtrans - not used on file shares */
+static NTSTATUS svfs_trans(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req, struct smb_trans2 *trans2)
+{
+	return NT_STATUS_ACCESS_DENIED;
+}
+
+
+/*
+  initialise the POSIX disk backend, registering ourselves with the ntvfs subsystem
+ */
+NTSTATUS ntvfs_simple_init(TALLOC_CTX *ctx)
+{
+	NTSTATUS ret;
+	struct ntvfs_ops ops;
+	NTVFS_CURRENT_CRITICAL_SIZES(vers);
+
+	ZERO_STRUCT(ops);
+
+	/* fill in all the operations */
+	ops.connect_fn = svfs_connect;
+	ops.disconnect_fn = svfs_disconnect;
+	ops.unlink_fn = svfs_unlink;
+	ops.chkpath_fn = svfs_chkpath;
+	ops.qpathinfo_fn = svfs_qpathinfo;
+	ops.setpathinfo_fn = svfs_setpathinfo;
+	ops.open_fn = svfs_open;
+	ops.mkdir_fn = svfs_mkdir;
+	ops.rmdir_fn = svfs_rmdir;
+	ops.rename_fn = svfs_rename;
+	ops.copy_fn = svfs_copy;
+	ops.ioctl_fn = svfs_ioctl;
+	ops.read_fn = svfs_read;
+	ops.write_fn = svfs_write;
+	ops.seek_fn = svfs_seek;
+	ops.flush_fn = svfs_flush;
+	ops.close_fn = svfs_close;
+	ops.exit_fn = svfs_exit;
+	ops.lock_fn = svfs_lock;
+	ops.setfileinfo_fn = svfs_setfileinfo;
+	ops.qfileinfo_fn = svfs_qfileinfo;
+	ops.fsinfo_fn = svfs_fsinfo;
+	ops.lpq_fn = svfs_lpq;
+	ops.search_first_fn = svfs_search_first;
+	ops.search_next_fn = svfs_search_next;
+	ops.search_close_fn = svfs_search_close;
+	ops.trans_fn = svfs_trans;
+	ops.logoff_fn = svfs_logoff;
+	ops.async_setup_fn = svfs_async_setup;
+	ops.cancel_fn = svfs_cancel;
+
+	/* register ourselves with the NTVFS subsystem. We register
+	   under names 'simple'
+	*/
+
+	ops.type = NTVFS_DISK;
+	ops.name = "simple";
+	ret = ntvfs_register(&ops, &vers);
+
+	if (!NT_STATUS_IS_OK(ret)) {
+		DEBUG(0,("Failed to register simple backend with name: %s!\n",
+			 ops.name));
+	}
+
+	return ret;
+}
diff --git a/source4/ntvfs/sysdep/README b/source4/ntvfs/sysdep/README
new file mode 100644
index 0000000..86b473e
--- /dev/null
+++ b/source4/ntvfs/sysdep/README
@@ -0,0 +1,5 @@
+This directory contains OS dependent interfaces to facilities that
+are only available on a few of our target systems, and require
+substantial code to abstract.
+
+
diff --git a/source4/ntvfs/sysdep/inotify.c b/source4/ntvfs/sysdep/inotify.c
new file mode 100644
index 0000000..94e0b17
--- /dev/null
+++ b/source4/ntvfs/sysdep/inotify.c
@@ -0,0 +1,398 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   Copyright (C) Andrew Tridgell 2006
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+  notify implementation using inotify
+*/
+
+#include "includes.h"
+#include "system/filesys.h"
+#include <tevent.h>
+#include "ntvfs/sysdep/sys_notify.h"
+#include "../lib/util/dlinklist.h"
+#include "libcli/raw/smb.h"
+#include "param/param.h"
+
+#include <sys/inotify.h>
+
+/* glibc < 2.5 headers don't have these defines */
+#ifndef IN_ONLYDIR
+#define IN_ONLYDIR 0x01000000
+#endif
+#ifndef IN_MASK_ADD
+#define IN_MASK_ADD 0x20000000
+#endif
+
+struct inotify_private {
+	struct sys_notify_context *ctx;
+	int fd;
+	struct inotify_watch_context *watches;
+};
+
+struct inotify_watch_context {
+	struct inotify_watch_context *next, *prev;
+	struct inotify_private *in;
+	int wd;
+	sys_notify_callback_t callback;
+	void *private_data;
+	uint32_t mask; /* the inotify mask */
+	uint32_t filter; /* the windows completion filter */
+	const char *path;
+};
+
+
+/*
+  see if a particular event from inotify really does match a requested
+  notify event in SMB
+*/
+static bool filter_match(struct inotify_watch_context *w,
+			 struct inotify_event *e)
+{
+	if ((e->mask & w->mask) == 0) {
+		/* this happens because inotify_add_watch() coalesces watches on the same
+		   path, oring their masks together */
+		return false;
+	}
+
+	/* SMB separates the filters for files and directories */
+	if (e->mask & IN_ISDIR) {
+		if ((w->filter & FILE_NOTIFY_CHANGE_DIR_NAME) == 0) {
+			return false;
+		}
+	} else {
+		if ((e->mask & IN_ATTRIB) &&
+		    (w->filter & (FILE_NOTIFY_CHANGE_ATTRIBUTES|
+				  FILE_NOTIFY_CHANGE_LAST_WRITE|
+				  FILE_NOTIFY_CHANGE_LAST_ACCESS|
+				  FILE_NOTIFY_CHANGE_EA|
+				  FILE_NOTIFY_CHANGE_SECURITY))) {
+			return true;
+		}
+		if ((e->mask & IN_MODIFY) && 
+		    (w->filter & FILE_NOTIFY_CHANGE_ATTRIBUTES)) {
+			return true;
+		}
+		if ((w->filter & FILE_NOTIFY_CHANGE_FILE_NAME) == 0) {
+			return false;
+		}
+	}
+
+	return true;
+}
+	
+
+
+/*
+  dispatch one inotify event
+  
+  the cookies are used to correctly handle renames
+*/
+static void inotify_dispatch(struct inotify_private *in, 
+			     struct inotify_event *e, 
+			     uint32_t prev_cookie,
+			     struct inotify_event *e2)
+{
+	struct inotify_watch_context *w, *next;
+	struct notify_event ne;
+
+	/* ignore extraneous events, such as unmount and IN_IGNORED events */
+	if ((e->mask & (IN_ATTRIB|IN_MODIFY|IN_CREATE|IN_DELETE|
+			IN_MOVED_FROM|IN_MOVED_TO)) == 0) {
+		return;
+	}
+
+	/* map the inotify mask to a action. This gets complicated for
+	   renames */
+	if (e->mask & IN_CREATE) {
+		ne.action = NOTIFY_ACTION_ADDED;
+	} else if (e->mask & IN_DELETE) {
+		ne.action = NOTIFY_ACTION_REMOVED;
+	} else if (e->mask & IN_MOVED_FROM) {
+		if (e2 != NULL && e2->cookie == e->cookie) {
+			ne.action = NOTIFY_ACTION_OLD_NAME;
+		} else {
+			ne.action = NOTIFY_ACTION_REMOVED;
+		}
+	} else if (e->mask & IN_MOVED_TO) {
+		if (e->cookie == prev_cookie) {
+			ne.action = NOTIFY_ACTION_NEW_NAME;
+		} else {
+			ne.action = NOTIFY_ACTION_ADDED;
+		}
+	} else {
+		ne.action = NOTIFY_ACTION_MODIFIED;
+	}
+	ne.path = e->name;
+
+	/* find any watches that have this watch descriptor */
+	for (w=in->watches;w;w=next) {
+		next = w->next;
+		if (w->wd == e->wd && filter_match(w, e)) {
+			ne.dir = w->path;
+			w->callback(in->ctx, w->private_data, &ne);
+		}
+	}
+
+	/* SMB expects a file rename to generate three events, two for
+	   the rename and the other for a modify of the
+	   destination. Strange! */
+	if (ne.action != NOTIFY_ACTION_NEW_NAME ||
+	    (e->mask & IN_ISDIR) != 0) {
+		return;
+	}
+
+	ne.action = NOTIFY_ACTION_MODIFIED;
+	e->mask = IN_ATTRIB;
+	
+	for (w=in->watches;w;w=next) {
+		next = w->next;
+		if (w->wd == e->wd && filter_match(w, e) &&
+		    !(w->filter & FILE_NOTIFY_CHANGE_CREATION)) {
+			ne.dir = w->path;
+			w->callback(in->ctx, w->private_data, &ne);
+		}
+	}
+}
+
+/*
+  called when the kernel has some events for us
+*/
+static void inotify_handler(struct tevent_context *ev, struct tevent_fd *fde,
+			    uint16_t flags, void *private_data)
+{
+	struct inotify_private *in = talloc_get_type(private_data,
+						     struct inotify_private);
+	int bufsize = 0;
+	struct inotify_event *e0, *e;
+	uint32_t prev_cookie=0;
+
+	/*
+	  we must use FIONREAD as we cannot predict the length of the
+	  filenames, and thus can't know how much to allocate
+	  otherwise
+	*/
+	if (ioctl(in->fd, FIONREAD, &bufsize) != 0 || 
+	    bufsize == 0) {
+		DEBUG(0,("No data on inotify fd?!\n"));
+		return;
+	}
+
+	e0 = e = talloc_size(in, bufsize);
+	if (e == NULL) return;
+
+	if (read(in->fd, e0, bufsize) != bufsize) {
+		DEBUG(0,("Failed to read all inotify data\n"));
+		talloc_free(e0);
+		return;
+	}
+
+	/* we can get more than one event in the buffer */
+	while (bufsize >= sizeof(*e)) {
+		struct inotify_event *e2 = NULL;
+		bufsize -= e->len + sizeof(*e);
+		if (bufsize >= sizeof(*e)) {
+			e2 = (struct inotify_event *)(e->len + sizeof(*e) + (char *)e);
+		}
+		inotify_dispatch(in, e, prev_cookie, e2);
+		prev_cookie = e->cookie;
+		e = e2;
+	}
+
+	talloc_free(e0);
+}
+
+/*
+  setup the inotify handle - called the first time a watch is added on
+  this context
+*/
+static NTSTATUS inotify_setup(struct sys_notify_context *ctx)
+{
+	struct inotify_private *in;
+	struct tevent_fd *fde;
+
+	in = talloc(ctx, struct inotify_private);
+	NT_STATUS_HAVE_NO_MEMORY(in);
+
+	in->fd = inotify_init();
+	if (in->fd == -1) {
+		DEBUG(0,("Failed to init inotify - %s\n", strerror(errno)));
+		talloc_free(in);
+		return map_nt_error_from_unix_common(errno);
+	}
+	in->ctx = ctx;
+	in->watches = NULL;
+
+	ctx->private_data = in;
+
+	/* add a event waiting for the inotify fd to be readable */
+	fde = tevent_add_fd(ctx->ev, in, in->fd,
+			   TEVENT_FD_READ, inotify_handler, in);
+	if (!fde) {
+		if (errno == 0) {
+			errno = ENOMEM;
+		}
+		DEBUG(0,("Failed to tevent_add_fd() - %s\n", strerror(errno)));
+		talloc_free(in);
+		return map_nt_error_from_unix_common(errno);
+	}
+
+	tevent_fd_set_auto_close(fde);
+
+	return NT_STATUS_OK;
+}
+
+
+/*
+  map from a change notify mask to a inotify mask. Remove any bits
+  which we can handle
+*/
+static const struct {
+	uint32_t notify_mask;
+	uint32_t inotify_mask;
+} inotify_mapping[] = {
+	{FILE_NOTIFY_CHANGE_FILE_NAME,   IN_CREATE|IN_DELETE|IN_MOVED_FROM|IN_MOVED_TO},
+	{FILE_NOTIFY_CHANGE_DIR_NAME,    IN_CREATE|IN_DELETE|IN_MOVED_FROM|IN_MOVED_TO},
+	{FILE_NOTIFY_CHANGE_ATTRIBUTES,  IN_ATTRIB|IN_MOVED_TO|IN_MOVED_FROM|IN_MODIFY},
+	{FILE_NOTIFY_CHANGE_LAST_WRITE,  IN_ATTRIB},
+	{FILE_NOTIFY_CHANGE_LAST_ACCESS, IN_ATTRIB},
+	{FILE_NOTIFY_CHANGE_EA,          IN_ATTRIB},
+	{FILE_NOTIFY_CHANGE_SECURITY,    IN_ATTRIB}
+};
+
+static uint32_t inotify_map(struct notify_entry *e)
+{
+	int i;
+	uint32_t out=0;
+	for (i=0;i<ARRAY_SIZE(inotify_mapping);i++) {
+		if (inotify_mapping[i].notify_mask & e->filter) {
+			out |= inotify_mapping[i].inotify_mask;
+			e->filter &= ~inotify_mapping[i].notify_mask;
+		}
+	}
+	return out;
+}
+
+/*
+  destroy a watch
+*/
+static int watch_destructor(struct inotify_watch_context *w)
+{
+	struct inotify_private *in = w->in;
+	int wd = w->wd;
+	DLIST_REMOVE(w->in->watches, w);
+
+	/* only rm the watch if its the last one with this wd */
+	for (w=in->watches;w;w=w->next) {
+		if (w->wd == wd) break;
+	}
+	if (w == NULL) {
+		inotify_rm_watch(in->fd, wd);
+	}
+	return 0;
+}
+
+
+/*
+  add a watch. The watch is removed when the caller calls
+  talloc_free() on *handle
+*/
+static NTSTATUS inotify_watch(struct sys_notify_context *ctx,
+			      struct notify_entry *e,
+			      sys_notify_callback_t callback,
+			      void *private_data, 
+			      void *handle_p)
+{
+	struct inotify_private *in;
+	int wd;
+	uint32_t mask;
+	struct inotify_watch_context *w;
+	uint32_t filter = e->filter;
+	void **handle = (void **)handle_p;
+
+	/* maybe setup the inotify fd */
+	if (ctx->private_data == NULL) {
+		NTSTATUS status;
+		status = inotify_setup(ctx);
+		NT_STATUS_NOT_OK_RETURN(status);
+	}
+
+	in = talloc_get_type(ctx->private_data, struct inotify_private);
+
+	mask = inotify_map(e);
+	if (mask == 0) {
+		/* this filter can't be handled by inotify */
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	/* using IN_MASK_ADD allows us to cope with inotify() returning the same
+	   watch descriptor for multiple watches on the same path */
+	mask |= (IN_MASK_ADD | IN_ONLYDIR);
+
+	/* get a new watch descriptor for this path */
+	wd = inotify_add_watch(in->fd, e->path, mask);
+	if (wd == -1) {
+		e->filter = filter;
+		return map_nt_error_from_unix_common(errno);
+	}
+
+	w = talloc(in, struct inotify_watch_context);
+	if (w == NULL) {
+		inotify_rm_watch(in->fd, wd);
+		e->filter = filter;
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	w->in = in;
+	w->wd = wd;
+	w->callback = callback;
+	w->private_data = private_data;
+	w->mask = mask;
+	w->filter = filter;
+	w->path = talloc_strdup(w, e->path);
+	if (w->path == NULL) {
+		inotify_rm_watch(in->fd, wd);
+		e->filter = filter;
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	(*handle) = w;
+
+	DLIST_ADD(in->watches, w);
+
+	/* the caller frees the handle to stop watching */
+	talloc_set_destructor(w, watch_destructor);
+	
+	return NT_STATUS_OK;
+}
+
+
+static struct sys_notify_backend inotify = {
+	.name = "inotify",
+	.notify_watch = inotify_watch
+};
+
+/*
+  initialise the inotify module
+ */
+NTSTATUS sys_notify_inotify_init(TALLOC_CTX *);
+NTSTATUS sys_notify_inotify_init(TALLOC_CTX *ctx)
+{
+	/* register ourselves as a system inotify module */
+	return sys_notify_register(ctx, &inotify);
+}
diff --git a/source4/ntvfs/sysdep/sys_lease.c b/source4/ntvfs/sysdep/sys_lease.c
new file mode 100644
index 0000000..1ef72f1
--- /dev/null
+++ b/source4/ntvfs/sysdep/sys_lease.c
@@ -0,0 +1,152 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Copyright (C) Stefan Metzmacher 2008
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+  abstract the various kernel interfaces to leases (oplocks) into a
+  single Samba friendly interface
+*/
+
+#include "includes.h"
+#include "system/filesys.h"
+#include "ntvfs/sysdep/sys_lease.h"
+#include "../lib/util/dlinklist.h"
+#include "param/param.h"
+#include "lib/util/samba_modules.h"
+
+#undef strcasecmp
+
+/* list of registered backends */
+static struct sys_lease_ops *backends;
+static uint32_t num_backends;
+
+#define LEASE_BACKEND	"lease:backend"
+
+/*
+  initialise a system change notify backend
+*/
+_PUBLIC_ struct sys_lease_context *sys_lease_context_create(struct share_config *scfg,
+							    TALLOC_CTX *mem_ctx,
+							    struct tevent_context *ev,
+							    struct imessaging_context *msg,
+							    sys_lease_send_break_fn break_send)
+{
+	struct sys_lease_context *ctx;
+	const char *bname;
+	int i;
+	NTSTATUS status;
+	TALLOC_CTX * tmp_ctx;
+
+	if (num_backends == 0) {
+		return NULL;
+	}
+
+	if (ev == NULL) {
+		return NULL;
+	}
+
+	ctx = talloc_zero(mem_ctx, struct sys_lease_context);
+	if (ctx == NULL) {
+		return NULL;
+	}
+
+	tmp_ctx = talloc_new(ctx);
+	if (tmp_ctx == NULL) {
+		return NULL;
+	}
+
+	ctx->event_ctx = ev;
+	ctx->msg_ctx = msg;
+	ctx->break_send = break_send;
+
+	bname = share_string_option(tmp_ctx, scfg, LEASE_BACKEND, NULL);
+	if (!bname) {
+		talloc_free(ctx);
+		return NULL;
+	}
+
+	for (i=0;i<num_backends;i++) {
+		if (strcasecmp(backends[i].name, bname) == 0) {
+			ctx->ops = &backends[i];
+			break;
+		}
+	}
+
+	if (!ctx->ops) {
+		talloc_free(ctx);
+		return NULL;
+	}
+
+	status = ctx->ops->init(ctx);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(ctx);
+		return NULL;
+	}
+
+	TALLOC_FREE(tmp_ctx);
+	return ctx;
+}
+
+/*
+  register a lease backend
+*/
+_PUBLIC_ NTSTATUS sys_lease_register(TALLOC_CTX *ctx,
+			const struct sys_lease_ops *backend)
+{
+	struct sys_lease_ops *b;
+	b = talloc_realloc(ctx, backends,
+			   struct sys_lease_ops, num_backends+1);
+	NT_STATUS_HAVE_NO_MEMORY(b);
+	backends = b;
+	backends[num_backends] = *backend;
+	num_backends++;
+	return NT_STATUS_OK;
+}
+
+_PUBLIC_ NTSTATUS sys_lease_init(void)
+{
+	static bool initialized = false;
+#define _MODULE_PROTO(init) extern NTSTATUS init(TALLOC_CTX *);
+	STATIC_sys_lease_MODULES_PROTO;
+	init_module_fn static_init[] = { STATIC_sys_lease_MODULES };
+
+	if (initialized) return NT_STATUS_OK;
+	initialized = true;
+
+	run_init_functions(NULL, static_init);
+
+	return NT_STATUS_OK;
+}
+
+NTSTATUS sys_lease_setup(struct sys_lease_context *ctx,
+			 struct opendb_entry *e)
+{
+	return ctx->ops->setup(ctx, e);
+}
+
+NTSTATUS sys_lease_update(struct sys_lease_context *ctx,
+			  struct opendb_entry *e)
+{
+	return ctx->ops->update(ctx, e);
+}
+
+NTSTATUS sys_lease_remove(struct sys_lease_context *ctx,
+			  struct opendb_entry *e)
+{
+	return ctx->ops->remove(ctx, e);
+}
diff --git a/source4/ntvfs/sysdep/sys_lease.h b/source4/ntvfs/sysdep/sys_lease.h
new file mode 100644
index 0000000..8b8d4bd
--- /dev/null
+++ b/source4/ntvfs/sysdep/sys_lease.h
@@ -0,0 +1,66 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Copyright (C) Stefan Metzmacher 2008
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "param/share.h"
+
+struct sys_lease_context;
+struct opendb_entry;
+struct imessaging_context;
+struct tevent_context;
+
+typedef NTSTATUS (*sys_lease_send_break_fn)(struct imessaging_context *,
+					    struct opendb_entry *,
+					    uint8_t level);
+
+struct sys_lease_ops {
+	const char *name;
+	NTSTATUS (*init)(struct sys_lease_context *ctx);
+	NTSTATUS (*setup)(struct sys_lease_context *ctx,
+			  struct opendb_entry *e);
+	NTSTATUS (*update)(struct sys_lease_context *ctx,
+			   struct opendb_entry *e);
+	NTSTATUS (*remove)(struct sys_lease_context *ctx,
+			   struct opendb_entry *e);
+};
+
+struct sys_lease_context {
+	struct tevent_context *event_ctx;
+	struct imessaging_context *msg_ctx;
+	sys_lease_send_break_fn break_send;
+	void *private_data; /* for use of backend */
+	const struct sys_lease_ops *ops;
+};
+
+NTSTATUS sys_lease_register(TALLOC_CTX *ctx, const struct sys_lease_ops *ops);
+NTSTATUS sys_lease_init(void);
+
+struct sys_lease_context *sys_lease_context_create(struct share_config *scfg,
+						   TALLOC_CTX *mem_ctx,
+						   struct tevent_context *ev,
+						   struct imessaging_context *msg_ctx,
+						   sys_lease_send_break_fn break_send);
+
+NTSTATUS sys_lease_setup(struct sys_lease_context *ctx,
+			 struct opendb_entry *e);
+
+NTSTATUS sys_lease_update(struct sys_lease_context *ctx,
+			  struct opendb_entry *e);
+
+NTSTATUS sys_lease_remove(struct sys_lease_context *ctx,
+			  struct opendb_entry *e);
diff --git a/source4/ntvfs/sysdep/sys_lease_linux.c b/source4/ntvfs/sysdep/sys_lease_linux.c
new file mode 100644
index 0000000..54c0007
--- /dev/null
+++ b/source4/ntvfs/sysdep/sys_lease_linux.c
@@ -0,0 +1,215 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Copyright (C) Stefan Metzmacher 2008
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+  lease (oplock) implementation using fcntl F_SETLEASE on linux
+*/
+
+#include "includes.h"
+#include <tevent.h>
+#include "system/filesys.h"
+#include "ntvfs/sysdep/sys_lease.h"
+#include "ntvfs/ntvfs.h"
+#include "librpc/gen_ndr/ndr_opendb.h"
+#include "../lib/util/dlinklist.h"
+#include "cluster/cluster.h"
+
+NTSTATUS sys_lease_linux_init(TALLOC_CTX *);
+
+#define LINUX_LEASE_RT_SIGNAL (SIGRTMIN+1)
+
+struct linux_lease_pending {
+	struct linux_lease_pending *prev, *next;
+	struct sys_lease_context *ctx;
+	struct opendb_entry e;
+};
+
+/* the global linked list of pending leases */
+static struct linux_lease_pending *leases;
+
+static void linux_lease_signal_handler(struct tevent_context *ev_ctx,
+				       struct tevent_signal *se,
+				       int signum, int count,
+				       void *_info, void *private_data)
+{
+	struct sys_lease_context *ctx = talloc_get_type(private_data,
+					struct sys_lease_context);
+	siginfo_t *info = (siginfo_t *)_info;
+	struct linux_lease_pending *c;
+	int got_fd = info->si_fd;
+
+	for (c = leases; c; c = c->next) {
+		int *fd = (int *)c->e.fd;
+
+		if (got_fd == *fd) {
+			break;
+		}
+	}
+
+	if (!c) {
+		return;
+	}
+
+	ctx->break_send(ctx->msg_ctx, &c->e, OPLOCK_BREAK_TO_NONE);
+}
+
+static int linux_lease_pending_destructor(struct linux_lease_pending *p)
+{
+	int ret;
+	int *fd = (int *)p->e.fd;
+
+	DLIST_REMOVE(leases, p);
+
+	if (*fd == -1) {
+		return 0;
+	}
+
+	ret = fcntl(*fd, F_SETLEASE, F_UNLCK);
+	if (ret == -1) {
+		DEBUG(0,("%s: failed to remove oplock: %s\n",
+			__FUNCTION__, strerror(errno)));
+	}
+
+	return 0;
+}
+
+static NTSTATUS linux_lease_init(struct sys_lease_context *ctx)
+{
+	struct tevent_signal *se;
+
+	se = tevent_add_signal(ctx->event_ctx, ctx,
+			       LINUX_LEASE_RT_SIGNAL, SA_SIGINFO,
+			       linux_lease_signal_handler, ctx);
+	NT_STATUS_HAVE_NO_MEMORY(se);
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS linux_lease_setup(struct sys_lease_context *ctx,
+				  struct opendb_entry *e)
+{
+	int ret;
+	int *fd = (int *)e->fd;
+	struct linux_lease_pending *p;
+
+	if (e->oplock_level == OPLOCK_NONE) {
+		e->fd = NULL;
+		return NT_STATUS_OK;
+	} else if (e->oplock_level == OPLOCK_LEVEL_II) {
+		/*
+		 * the linux kernel doesn't support level2 oplocks
+		 * so fix up the granted oplock level
+		 */
+		e->oplock_level = OPLOCK_NONE;
+		e->allow_level_II_oplock = false;
+		e->fd = NULL;
+		return NT_STATUS_OK;
+	}
+
+	p = talloc(ctx, struct linux_lease_pending);
+	NT_STATUS_HAVE_NO_MEMORY(p);
+
+	p->ctx = ctx;
+	p->e = *e;
+
+	ret = fcntl(*fd, F_SETSIG, LINUX_LEASE_RT_SIGNAL);
+	if (ret == -1) {
+		talloc_free(p);
+		return map_nt_error_from_unix_common(errno);
+	}
+
+	ret = fcntl(*fd, F_SETLEASE, F_WRLCK);
+	if (ret == -1) {
+		talloc_free(p);
+		return map_nt_error_from_unix_common(errno);
+	}
+
+	DLIST_ADD(leases, p);
+
+	talloc_set_destructor(p, linux_lease_pending_destructor);
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS linux_lease_remove(struct sys_lease_context *ctx,
+				   struct opendb_entry *e);
+
+static NTSTATUS linux_lease_update(struct sys_lease_context *ctx,
+				   struct opendb_entry *e)
+{
+	struct linux_lease_pending *c;
+
+	for (c = leases; c; c = c->next) {
+		if (c->e.fd == e->fd) {
+			break;
+		}
+	}
+
+	if (!c) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	/*
+	 * set the fd pointer to NULL so that the caller
+	 * will not call the remove function as the oplock
+	 * is already removed
+	 */
+	e->fd = NULL;
+
+	talloc_free(c);
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS linux_lease_remove(struct sys_lease_context *ctx,
+				   struct opendb_entry *e)
+{
+	struct linux_lease_pending *c;
+
+	for (c = leases; c; c = c->next) {
+		if (c->e.fd == e->fd) {
+			break;
+		}
+	}
+
+	if (!c) {
+		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+	}
+
+	talloc_free(c);
+
+	return NT_STATUS_OK;
+}
+
+static struct sys_lease_ops linux_lease_ops = {
+	.name	= "linux",
+	.init	= linux_lease_init,
+	.setup	= linux_lease_setup,
+	.update	= linux_lease_update,
+	.remove	= linux_lease_remove
+};
+
+/*
+  initialise the linux lease module
+ */
+NTSTATUS sys_lease_linux_init(TALLOC_CTX *ctx)
+{
+	/* register ourselves as a system lease module */
+	return sys_lease_register(ctx, &linux_lease_ops);
+}
diff --git a/source4/ntvfs/sysdep/sys_notify.c b/source4/ntvfs/sysdep/sys_notify.c
new file mode 100644
index 0000000..6991461
--- /dev/null
+++ b/source4/ntvfs/sysdep/sys_notify.c
@@ -0,0 +1,151 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   Copyright (C) Andrew Tridgell 2006
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+  abstract the various kernel interfaces to change notify into a
+  single Samba friendly interface
+*/
+
+#include "includes.h"
+#include "system/filesys.h"
+#include "ntvfs/sysdep/sys_notify.h"
+#include <tevent.h>
+#include "../lib/util/dlinklist.h"
+#include "param/param.h"
+#include "lib/util/samba_modules.h"
+
+#undef strcasecmp
+
+/* list of registered backends */
+static struct sys_notify_backend *backends;
+static uint32_t num_backends;
+
+#define NOTIFY_BACKEND	"notify:backend"
+
+/*
+  initialise a system change notify backend
+*/
+_PUBLIC_ struct sys_notify_context *sys_notify_context_create(struct share_config *scfg,
+							      TALLOC_CTX *mem_ctx, 
+							      struct tevent_context *ev)
+{
+	struct sys_notify_context *ctx;
+	const char *bname;
+	int i;
+
+	if (num_backends == 0) {
+		return NULL;
+	}
+
+	if (ev == NULL) {
+		return NULL;
+	}
+
+	ctx = talloc_zero(mem_ctx, struct sys_notify_context);
+	if (ctx == NULL) {
+		return NULL;
+	}
+
+	ctx->ev = ev;
+
+	bname = share_string_option(ctx, scfg, NOTIFY_BACKEND, NULL);
+	if (!bname) {
+		if (num_backends) {
+			bname = backends[0].name;
+		} else {
+			bname = "__unknown__";
+		}
+	}
+
+	for (i=0;i<num_backends;i++) {
+		char *enable_opt_name;
+		bool enabled;
+		
+		enable_opt_name = talloc_asprintf(mem_ctx, "notify:%s", 
+										  backends[i].name);
+		enabled = share_bool_option(scfg, enable_opt_name, true);
+		talloc_free(enable_opt_name);
+
+		if (!enabled) 
+			continue;
+
+		if (strcasecmp(backends[i].name, bname) == 0) {
+			bname = backends[i].name;
+			break;
+		}
+	}
+
+	ctx->name = bname;
+	ctx->notify_watch = NULL;
+
+	if (i < num_backends) {
+		ctx->notify_watch = backends[i].notify_watch;
+	}
+
+	return ctx;
+}
+
+/*
+  add a watch
+
+  note that this call must modify the e->filter and e->subdir_filter
+  bits to remove ones handled by this backend. Any remaining bits will
+  be handled by the generic notify layer
+*/
+_PUBLIC_ NTSTATUS sys_notify_watch(struct sys_notify_context *ctx,
+				   struct notify_entry *e,
+				   sys_notify_callback_t callback,
+				   void *private_data, void *handle)
+{
+	if (!ctx->notify_watch) {
+		return NT_STATUS_INVALID_SYSTEM_SERVICE;
+	}
+	return ctx->notify_watch(ctx, e, callback, private_data, handle);
+}
+
+/*
+  register a notify backend
+*/
+_PUBLIC_ NTSTATUS sys_notify_register(TALLOC_CTX *ctx,
+			struct sys_notify_backend *backend)
+{
+	struct sys_notify_backend *b;
+	b = talloc_realloc(ctx, backends,
+			   struct sys_notify_backend, num_backends+1);
+	NT_STATUS_HAVE_NO_MEMORY(b);
+	backends = b;
+	backends[num_backends] = *backend;
+	num_backends++;
+	return NT_STATUS_OK;
+}
+
+_PUBLIC_ NTSTATUS sys_notify_init(void)
+{
+	static bool initialized = false;
+#define _MODULE_PROTO(init) extern NTSTATUS init(TALLOC_CTX *);
+	STATIC_sys_notify_MODULES_PROTO;
+	init_module_fn static_init[] = { STATIC_sys_notify_MODULES };
+
+	if (initialized) return NT_STATUS_OK;
+	initialized = true;
+
+	run_init_functions(NULL, static_init);
+	
+	return NT_STATUS_OK;
+}
diff --git a/source4/ntvfs/sysdep/sys_notify.h b/source4/ntvfs/sysdep/sys_notify.h
new file mode 100644
index 0000000..9e10f14
--- /dev/null
+++ b/source4/ntvfs/sysdep/sys_notify.h
@@ -0,0 +1,54 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   Copyright (C) Andrew Tridgell 2006
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "librpc/gen_ndr/notify.h"
+#include "param/share.h"
+
+struct sys_notify_context;
+
+typedef void (*sys_notify_callback_t)(struct sys_notify_context *, 
+				      void *, struct notify_event *ev);
+
+typedef NTSTATUS (*notify_watch_t)(struct sys_notify_context *ctx, 
+				   struct notify_entry *e,
+				   sys_notify_callback_t callback,
+				   void *private_data, 
+				   void *handle_p);
+
+struct sys_notify_context {
+	struct tevent_context *ev;
+	void *private_data; /* for use of backend */
+	const char *name;
+	notify_watch_t notify_watch;
+};
+
+struct sys_notify_backend {
+	const char *name;
+	notify_watch_t notify_watch;
+};
+
+NTSTATUS sys_notify_register(TALLOC_CTX *ctx,
+			struct sys_notify_backend *backend);
+struct sys_notify_context *sys_notify_context_create(struct share_config *scfg,
+						     TALLOC_CTX *mem_ctx, 
+						     struct tevent_context *ev);
+NTSTATUS sys_notify_watch(struct sys_notify_context *ctx, struct notify_entry *e,
+			  sys_notify_callback_t callback, void *private_data, 
+			  void *handle);
+NTSTATUS sys_notify_init(void);
diff --git a/source4/ntvfs/sysdep/wscript_build b/source4/ntvfs/sysdep/wscript_build
new file mode 100644
index 0000000..bfb4e55
--- /dev/null
+++ b/source4/ntvfs/sysdep/wscript_build
@@ -0,0 +1,31 @@
+#!/usr/bin/env python
+
+bld.SAMBA_MODULE('sys_notify_inotify',
+                 source='inotify.c',
+                 subsystem='sys_notify',
+                 init_function='sys_notify_inotify_init',
+                 deps='events inotify',
+                 enabled = bld.CONFIG_SET('HAVE_LINUX_INOTIFY')
+                 )
+
+
+bld.SAMBA_SUBSYSTEM('sys_notify',
+                    source='sys_notify.c',
+                    deps='talloc tevent'
+                    )
+
+
+bld.SAMBA_MODULE('sys_lease_linux',
+                 source='sys_lease_linux.c',
+                 deps='tevent',
+                 subsystem='sys_lease',
+                 init_function='sys_lease_linux_init',
+                 enabled = bld.CONFIG_SET('HAVE_F_SETLEASE_DECL')
+                 )
+
+
+bld.SAMBA_SUBSYSTEM('sys_lease',
+                    source='sys_lease.c',
+                    deps='talloc'
+                    )
+
diff --git a/source4/ntvfs/sysdep/wscript_configure b/source4/ntvfs/sysdep/wscript_configure
new file mode 100644
index 0000000..2035884
--- /dev/null
+++ b/source4/ntvfs/sysdep/wscript_configure
@@ -0,0 +1,13 @@
+#!/usr/bin/env python
+
+import sys
+
+# Check for inotify support (Skip if we are SunOS)
+#NOTE: illumos provides sys/inotify.h but is not an exact match for linux
+host_os = sys.platform
+if host_os.rfind('sunos') == -1:
+    conf.CHECK_HEADERS('sys/inotify.h', add_headers=False)
+    if (conf.CONFIG_SET('HAVE_SYS_INOTIFY_H')):
+        conf.DEFINE('HAVE_LINUX_INOTIFY', 1)
+
+conf.CHECK_DECLS('SA_SIGINFO', headers='signal.h', reverse=True)
diff --git a/source4/ntvfs/unixuid/vfs_unixuid.c b/source4/ntvfs/unixuid/vfs_unixuid.c
new file mode 100644
index 0000000..a7729d2
--- /dev/null
+++ b/source4/ntvfs/unixuid/vfs_unixuid.c
@@ -0,0 +1,724 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   A pass-through NTVFS module to setup a security context using unix
+   uid/gid
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "system/filesys.h"
+#include "system/passwd.h"
+#include "auth/auth.h"
+#include "ntvfs/ntvfs.h"
+#include "libcli/wbclient/wbclient.h"
+#define TEVENT_DEPRECATED
+#include <tevent.h>
+#include "../lib/util/setid.h"
+
+NTSTATUS ntvfs_unixuid_init(TALLOC_CTX *);
+
+struct unixuid_private {
+	struct security_unix_token *last_sec_ctx;
+	struct security_token *last_token;
+};
+
+
+/*
+  pull the current security context into a security_unix_token
+*/
+static struct security_unix_token *save_unix_security(TALLOC_CTX *mem_ctx)
+{
+	struct security_unix_token *sec = talloc(mem_ctx, struct security_unix_token);
+	if (sec == NULL) {
+		return NULL;
+	}
+	sec->uid = geteuid();
+	sec->gid = getegid();
+	sec->ngroups = getgroups(0, NULL);
+	if (sec->ngroups == -1) {
+		talloc_free(sec);
+		return NULL;
+	}
+	sec->groups = talloc_array(sec, gid_t, sec->ngroups);
+	if (sec->groups == NULL) {
+		talloc_free(sec);
+		return NULL;
+	}
+
+	if (getgroups(sec->ngroups, sec->groups) != sec->ngroups) {
+		talloc_free(sec);
+		return NULL;
+	}
+
+	return sec;
+}
+
+/*
+  set the current security context from a security_unix_token
+*/
+static NTSTATUS set_unix_security(struct security_unix_token *sec)
+{
+	samba_seteuid(0);
+
+	if (samba_setgroups(sec->ngroups, sec->groups) != 0) {
+		DBG_ERR("*** samba_setgroups failed\n");
+		return NT_STATUS_ACCESS_DENIED;
+	}
+	if (samba_setegid(sec->gid) != 0) {
+		DBG_ERR("*** samba_setegid(%u) failed\n", sec->gid);
+		return NT_STATUS_ACCESS_DENIED;
+	}
+	if (samba_seteuid(sec->uid) != 0) {
+		DBG_ERR("*** samba_seteuid(%u) failed\n", sec->uid);
+		return NT_STATUS_ACCESS_DENIED;
+	}
+	return NT_STATUS_OK;
+}
+
+static int unixuid_nesting_level;
+
+/*
+  called at the start and end of a tevent nesting loop. Needs to save/restore
+  unix security context
+ */
+static int unixuid_event_nesting_hook(struct tevent_context *ev,
+				      void *private_data,
+				      uint32_t level,
+				      bool begin,
+				      void *stack_ptr,
+				      const char *location)
+{
+	struct security_unix_token *sec_ctx;
+
+	if (unixuid_nesting_level == 0) {
+		/* we don't need to do anything unless we are nested
+		   inside of a call in this module */
+		return 0;
+	}
+
+	if (begin) {
+		sec_ctx = save_unix_security(ev);
+		if (sec_ctx == NULL) {
+			DEBUG(0,("%s: Failed to save security context\n", location));
+			return -1;
+		}
+		*(struct security_unix_token **)stack_ptr = sec_ctx;
+		if (samba_seteuid(0) != 0 || samba_setegid(0) != 0) {
+			DEBUG(0,("%s: Failed to change to root\n", location));
+			return -1;
+		}
+	} else {
+		/* called when we come out of a nesting level */
+		NTSTATUS status;
+
+		sec_ctx = *(struct security_unix_token **)stack_ptr;
+		if (sec_ctx == NULL) {
+			/* this happens the first time this function
+			   is called, as we install the hook while
+			   inside an event in unixuid_connect() */
+			return 0;
+		}
+
+		sec_ctx = talloc_get_type_abort(sec_ctx, struct security_unix_token);
+		status = set_unix_security(sec_ctx);
+		talloc_free(sec_ctx);
+		if (!NT_STATUS_IS_OK(status)) {
+			DEBUG(0,("%s: Failed to revert security context (%s)\n",
+				 location, nt_errstr(status)));
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
+
+/*
+  form a security_unix_token from the current security_token
+*/
+static NTSTATUS nt_token_to_unix_security(struct ntvfs_module_context *ntvfs,
+					  struct ntvfs_request *req,
+					  struct security_token *token,
+					  struct security_unix_token **sec)
+{
+	return security_token_to_unix_token(req, token, sec);
+}
+
+/*
+  setup our unix security context according to the session authentication info
+*/
+static NTSTATUS unixuid_setup_security(struct ntvfs_module_context *ntvfs,
+				       struct ntvfs_request *req, struct security_unix_token **sec)
+{
+	struct unixuid_private *priv = ntvfs->private_data;
+	struct security_token *token;
+	struct security_unix_token *newsec;
+	NTSTATUS status;
+
+	/* If we are asked to set up, but have not had a successful
+	 * session setup or tree connect, then these may not be filled
+	 * in.  ACCESS_DENIED is the right error code here */
+	if (req->session_info == NULL || priv == NULL) {
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
+	token = req->session_info->security_token;
+
+	*sec = save_unix_security(ntvfs);
+	if (*sec == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	if (token == priv->last_token) {
+		newsec = priv->last_sec_ctx;
+	} else {
+		status = nt_token_to_unix_security(ntvfs, req, token, &newsec);
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(*sec);
+			return status;
+		}
+		if (priv->last_sec_ctx) {
+			talloc_free(priv->last_sec_ctx);
+		}
+		priv->last_sec_ctx = newsec;
+		priv->last_token = token;
+		talloc_steal(priv, newsec);
+	}
+
+	status = set_unix_security(newsec);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(*sec);
+		return status;
+	}
+
+	return NT_STATUS_OK;
+}
+
+/*
+  this pass through macro operates on request contexts
+*/
+#define PASS_THRU_REQ(ntvfs, req, op, args) do { \
+	NTSTATUS status2; \
+	struct security_unix_token *sec; \
+	status = unixuid_setup_security(ntvfs, req, &sec); \
+	NT_STATUS_NOT_OK_RETURN(status); \
+	unixuid_nesting_level++; \
+	status = ntvfs_next_##op args; \
+	unixuid_nesting_level--; \
+	status2 = set_unix_security(sec); \
+	talloc_free(sec); \
+	if (!NT_STATUS_IS_OK(status2)) smb_panic("Unable to reset security context"); \
+} while (0)
+
+
+
+/*
+  connect to a share - used when a tree_connect operation comes in.
+*/
+static NTSTATUS unixuid_connect(struct ntvfs_module_context *ntvfs,
+				struct ntvfs_request *req, union smb_tcon *tcon)
+{
+	struct unixuid_private *priv;
+	NTSTATUS status;
+
+	priv = talloc(ntvfs, struct unixuid_private);
+	if (!priv) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	priv->last_sec_ctx = NULL;
+	priv->last_token = NULL;
+	ntvfs->private_data = priv;
+
+	tevent_loop_set_nesting_hook(ntvfs->ctx->event_ctx,
+				     unixuid_event_nesting_hook,
+				     &unixuid_nesting_level);
+
+	/* we don't use PASS_THRU_REQ here, as the connect operation runs with
+	   root privileges. This allows the backends to setup any database
+	   links they might need during the connect. */
+	status = ntvfs_next_connect(ntvfs, req, tcon);
+
+	return status;
+}
+
+/*
+  disconnect from a share
+*/
+static NTSTATUS unixuid_disconnect(struct ntvfs_module_context *ntvfs)
+{
+	struct unixuid_private *priv = ntvfs->private_data;
+	NTSTATUS status;
+
+	talloc_free(priv);
+	ntvfs->private_data = NULL;
+
+	status = ntvfs_next_disconnect(ntvfs);
+
+	return status;
+}
+
+
+/*
+  delete a file
+*/
+static NTSTATUS unixuid_unlink(struct ntvfs_module_context *ntvfs,
+			      struct ntvfs_request *req,
+			      union smb_unlink *unl)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, unlink, (ntvfs, req, unl));
+
+	return status;
+}
+
+/*
+  ioctl interface
+*/
+static NTSTATUS unixuid_ioctl(struct ntvfs_module_context *ntvfs,
+			     struct ntvfs_request *req, union smb_ioctl *io)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, ioctl, (ntvfs, req, io));
+
+	return status;
+}
+
+/*
+  check if a directory exists
+*/
+static NTSTATUS unixuid_chkpath(struct ntvfs_module_context *ntvfs,
+			        struct ntvfs_request *req,
+				union smb_chkpath *cp)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, chkpath, (ntvfs, req, cp));
+
+	return status;
+}
+
+/*
+  return info on a pathname
+*/
+static NTSTATUS unixuid_qpathinfo(struct ntvfs_module_context *ntvfs,
+				 struct ntvfs_request *req, union smb_fileinfo *info)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, qpathinfo, (ntvfs, req, info));
+
+	return status;
+}
+
+/*
+  query info on a open file
+*/
+static NTSTATUS unixuid_qfileinfo(struct ntvfs_module_context *ntvfs,
+				 struct ntvfs_request *req, union smb_fileinfo *info)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, qfileinfo, (ntvfs, req, info));
+
+	return status;
+}
+
+
+/*
+  set info on a pathname
+*/
+static NTSTATUS unixuid_setpathinfo(struct ntvfs_module_context *ntvfs,
+				   struct ntvfs_request *req, union smb_setfileinfo *st)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, setpathinfo, (ntvfs, req, st));
+
+	return status;
+}
+
+/*
+  open a file
+*/
+static NTSTATUS unixuid_open(struct ntvfs_module_context *ntvfs,
+			     struct ntvfs_request *req, union smb_open *io)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, open, (ntvfs, req, io));
+
+	return status;
+}
+
+/*
+  create a directory
+*/
+static NTSTATUS unixuid_mkdir(struct ntvfs_module_context *ntvfs,
+			     struct ntvfs_request *req, union smb_mkdir *md)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, mkdir, (ntvfs, req, md));
+
+	return status;
+}
+
+/*
+  remove a directory
+*/
+static NTSTATUS unixuid_rmdir(struct ntvfs_module_context *ntvfs,
+			     struct ntvfs_request *req, struct smb_rmdir *rd)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, rmdir, (ntvfs, req, rd));
+
+	return status;
+}
+
+/*
+  rename a set of files
+*/
+static NTSTATUS unixuid_rename(struct ntvfs_module_context *ntvfs,
+			      struct ntvfs_request *req, union smb_rename *ren)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, rename, (ntvfs, req, ren));
+
+	return status;
+}
+
+/*
+  copy a set of files
+*/
+static NTSTATUS unixuid_copy(struct ntvfs_module_context *ntvfs,
+			    struct ntvfs_request *req, struct smb_copy *cp)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, copy, (ntvfs, req, cp));
+
+	return status;
+}
+
+/*
+  read from a file
+*/
+static NTSTATUS unixuid_read(struct ntvfs_module_context *ntvfs,
+			    struct ntvfs_request *req, union smb_read *rd)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, read, (ntvfs, req, rd));
+
+	return status;
+}
+
+/*
+  write to a file
+*/
+static NTSTATUS unixuid_write(struct ntvfs_module_context *ntvfs,
+			     struct ntvfs_request *req, union smb_write *wr)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, write, (ntvfs, req, wr));
+
+	return status;
+}
+
+/*
+  seek in a file
+*/
+static NTSTATUS unixuid_seek(struct ntvfs_module_context *ntvfs,
+			     struct ntvfs_request *req,
+			     union smb_seek *io)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, seek, (ntvfs, req, io));
+
+	return status;
+}
+
+/*
+  flush a file
+*/
+static NTSTATUS unixuid_flush(struct ntvfs_module_context *ntvfs,
+			      struct ntvfs_request *req,
+			      union smb_flush *io)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, flush, (ntvfs, req, io));
+
+	return status;
+}
+
+/*
+  close a file
+*/
+static NTSTATUS unixuid_close(struct ntvfs_module_context *ntvfs,
+			     struct ntvfs_request *req, union smb_close *io)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, close, (ntvfs, req, io));
+
+	return status;
+}
+
+/*
+  exit - closing files
+*/
+static NTSTATUS unixuid_exit(struct ntvfs_module_context *ntvfs,
+			    struct ntvfs_request *req)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, exit, (ntvfs, req));
+
+	return status;
+}
+
+/*
+  logoff - closing files
+*/
+static NTSTATUS unixuid_logoff(struct ntvfs_module_context *ntvfs,
+			      struct ntvfs_request *req)
+{
+	struct unixuid_private *priv = ntvfs->private_data;
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, logoff, (ntvfs, req));
+
+	priv->last_token = NULL;
+
+	return status;
+}
+
+/*
+  async setup
+*/
+static NTSTATUS unixuid_async_setup(struct ntvfs_module_context *ntvfs,
+				    struct ntvfs_request *req,
+				    void *private_data)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, async_setup, (ntvfs, req, private_data));
+
+	return status;
+}
+
+/*
+  cancel an async request
+*/
+static NTSTATUS unixuid_cancel(struct ntvfs_module_context *ntvfs,
+			       struct ntvfs_request *req)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, cancel, (ntvfs, req));
+
+	return status;
+}
+
+/*
+  change notify
+*/
+static NTSTATUS unixuid_notify(struct ntvfs_module_context *ntvfs,
+			       struct ntvfs_request *req, union smb_notify *info)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, notify, (ntvfs, req, info));
+
+	return status;
+}
+
+/*
+  lock a byte range
+*/
+static NTSTATUS unixuid_lock(struct ntvfs_module_context *ntvfs,
+			    struct ntvfs_request *req, union smb_lock *lck)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, lock, (ntvfs, req, lck));
+
+	return status;
+}
+
+/*
+  set info on a open file
+*/
+static NTSTATUS unixuid_setfileinfo(struct ntvfs_module_context *ntvfs,
+				   struct ntvfs_request *req,
+				   union smb_setfileinfo *info)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, setfileinfo, (ntvfs, req, info));
+
+	return status;
+}
+
+
+/*
+  return filesystem space info
+*/
+static NTSTATUS unixuid_fsinfo(struct ntvfs_module_context *ntvfs,
+			      struct ntvfs_request *req, union smb_fsinfo *fs)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, fsinfo, (ntvfs, req, fs));
+
+	return status;
+}
+
+/*
+  return print queue info
+*/
+static NTSTATUS unixuid_lpq(struct ntvfs_module_context *ntvfs,
+			   struct ntvfs_request *req, union smb_lpq *lpq)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, lpq, (ntvfs, req, lpq));
+
+	return status;
+}
+
+/*
+   list files in a directory matching a wildcard pattern
+*/
+static NTSTATUS unixuid_search_first(struct ntvfs_module_context *ntvfs,
+				    struct ntvfs_request *req, union smb_search_first *io,
+				    void *search_private,
+				    bool (*callback)(void *, const union smb_search_data *))
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, search_first, (ntvfs, req, io, search_private, callback));
+
+	return status;
+}
+
+/* continue a search */
+static NTSTATUS unixuid_search_next(struct ntvfs_module_context *ntvfs,
+				   struct ntvfs_request *req, union smb_search_next *io,
+				   void *search_private,
+				   bool (*callback)(void *, const union smb_search_data *))
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, search_next, (ntvfs, req, io, search_private, callback));
+
+	return status;
+}
+
+/* close a search */
+static NTSTATUS unixuid_search_close(struct ntvfs_module_context *ntvfs,
+				    struct ntvfs_request *req, union smb_search_close *io)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, search_close, (ntvfs, req, io));
+
+	return status;
+}
+
+/* SMBtrans - not used on file shares */
+static NTSTATUS unixuid_trans(struct ntvfs_module_context *ntvfs,
+			     struct ntvfs_request *req, struct smb_trans2 *trans2)
+{
+	NTSTATUS status;
+
+	PASS_THRU_REQ(ntvfs, req, trans, (ntvfs, req, trans2));
+
+	return status;
+}
+
+/*
+  initialise the unixuid backend, registering ourselves with the ntvfs subsystem
+ */
+NTSTATUS ntvfs_unixuid_init(TALLOC_CTX *ctx)
+{
+	NTSTATUS ret;
+	struct ntvfs_ops ops;
+	NTVFS_CURRENT_CRITICAL_SIZES(vers);
+
+	ZERO_STRUCT(ops);
+
+	/* fill in all the operations */
+	ops.connect_fn = unixuid_connect;
+	ops.disconnect_fn = unixuid_disconnect;
+	ops.unlink_fn = unixuid_unlink;
+	ops.chkpath_fn = unixuid_chkpath;
+	ops.qpathinfo_fn = unixuid_qpathinfo;
+	ops.setpathinfo_fn = unixuid_setpathinfo;
+	ops.open_fn = unixuid_open;
+	ops.mkdir_fn = unixuid_mkdir;
+	ops.rmdir_fn = unixuid_rmdir;
+	ops.rename_fn = unixuid_rename;
+	ops.copy_fn = unixuid_copy;
+	ops.ioctl_fn = unixuid_ioctl;
+	ops.read_fn = unixuid_read;
+	ops.write_fn = unixuid_write;
+	ops.seek_fn = unixuid_seek;
+	ops.flush_fn = unixuid_flush;
+	ops.close_fn = unixuid_close;
+	ops.exit_fn = unixuid_exit;
+	ops.lock_fn = unixuid_lock;
+	ops.setfileinfo_fn = unixuid_setfileinfo;
+	ops.qfileinfo_fn = unixuid_qfileinfo;
+	ops.fsinfo_fn = unixuid_fsinfo;
+	ops.lpq_fn = unixuid_lpq;
+	ops.search_first_fn = unixuid_search_first;
+	ops.search_next_fn = unixuid_search_next;
+	ops.search_close_fn = unixuid_search_close;
+	ops.trans_fn = unixuid_trans;
+	ops.logoff_fn = unixuid_logoff;
+	ops.async_setup_fn = unixuid_async_setup;
+	ops.cancel_fn = unixuid_cancel;
+	ops.notify_fn = unixuid_notify;
+
+	ops.name = "unixuid";
+
+	/* we register under all 3 backend types, as we are not type specific */
+	ops.type = NTVFS_DISK;
+	ret = ntvfs_register(&ops, &vers);
+	if (!NT_STATUS_IS_OK(ret)) goto failed;
+
+	ops.type = NTVFS_PRINT;
+	ret = ntvfs_register(&ops, &vers);
+	if (!NT_STATUS_IS_OK(ret)) goto failed;
+
+	ops.type = NTVFS_IPC;
+	ret = ntvfs_register(&ops, &vers);
+	if (!NT_STATUS_IS_OK(ret)) goto failed;
+
+failed:
+	return ret;
+}
diff --git a/source4/ntvfs/unixuid/wscript_build b/source4/ntvfs/unixuid/wscript_build
new file mode 100644
index 0000000..56fd42d
--- /dev/null
+++ b/source4/ntvfs/unixuid/wscript_build
@@ -0,0 +1,9 @@
+#!/usr/bin/env python
+
+bld.SAMBA_MODULE('ntvfs_unixuid',
+	source='vfs_unixuid.c',
+	subsystem='ntvfs',
+	init_function='ntvfs_unixuid_init',
+	deps='auth_unix_token talloc'
+	)
+
diff --git a/source4/ntvfs/wscript_build b/source4/ntvfs/wscript_build
new file mode 100644
index 0000000..3b81216
--- /dev/null
+++ b/source4/ntvfs/wscript_build
@@ -0,0 +1,40 @@
+#!/usr/bin/env python
+
+bld.SAMBA_LIBRARY('ntvfs',
+                  source='ntvfs_base.c ntvfs_generic.c ntvfs_interface.c ntvfs_util.c',
+                  autoproto='ntvfs_proto.h',
+                  deps='tevent samba-modules',
+                  private_library=True,
+	          enabled=bld.CONFIG_SET('WITH_NTVFS_FILESERVER')
+                  )
+
+bld.RECURSE('posix')
+if bld.CONFIG_SET('WITH_NTVFS_FILESERVER'):
+    bld.RECURSE('common')
+    bld.RECURSE('unixuid')
+    bld.RECURSE('sysdep')
+
+    bld.SAMBA_MODULE('ntvfs_cifs',
+	             source='cifs/vfs_cifs.c',
+	             subsystem='ntvfs',
+	             init_function='ntvfs_cifs_init',
+	             deps='LIBCLI_SMB smbclient-raw param_options'
+    )
+
+
+    bld.SAMBA_MODULE('ntvfs_simple',
+	             source='simple/vfs_simple.c simple/svfs_util.c',
+	             autoproto='simple/proto.h',
+	             subsystem='ntvfs',
+	             init_function='ntvfs_simple_init',
+	             deps='talloc'
+    )
+
+
+    bld.SAMBA_MODULE('ntvfs_ipc',
+	             source='ipc/vfs_ipc.c ipc/ipc_rap.c ipc/rap_server.c',
+	             autoproto='ipc/proto.h',
+	            subsystem='ntvfs',
+	             init_function='ntvfs_ipc_init',
+	             deps='NDR_NAMED_PIPE_AUTH npa_tstream gssapi samba-credentials DCERPC_SHARE'
+    )