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-rw-r--r--source4/ntvfs/sysdep/README5
-rw-r--r--source4/ntvfs/sysdep/inotify.c398
-rw-r--r--source4/ntvfs/sysdep/sys_lease.c152
-rw-r--r--source4/ntvfs/sysdep/sys_lease.h66
-rw-r--r--source4/ntvfs/sysdep/sys_lease_linux.c215
-rw-r--r--source4/ntvfs/sysdep/sys_notify.c151
-rw-r--r--source4/ntvfs/sysdep/sys_notify.h54
-rw-r--r--source4/ntvfs/sysdep/wscript_build31
-rw-r--r--source4/ntvfs/sysdep/wscript_configure13
9 files changed, 1085 insertions, 0 deletions
diff --git a/source4/ntvfs/sysdep/README b/source4/ntvfs/sysdep/README
new file mode 100644
index 0000000..a2a8f57
--- /dev/null
+++ b/source4/ntvfs/sysdep/README
@@ -0,0 +1,5 @@
+This directory contains OS depdendent 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..ba4b336
--- /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 muliple 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
+};
+
+/*
+ initialialise 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..566a9a3
--- /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
+};
+
+/*
+ initialialise 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)
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 14:14:06 +0000