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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 17:20:00 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 17:20:00 +0000
commit8daa83a594a2e98f39d764422bfbdbc62c9efd44 (patch)
tree4099e8021376c7d8c05bdf8503093d80e9c7bad0 /source3/modules/vfs_gpfs.c
parentInitial commit. (diff)
downloadsamba-8daa83a594a2e98f39d764422bfbdbc62c9efd44.tar.xz
samba-8daa83a594a2e98f39d764422bfbdbc62c9efd44.zip
Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--source3/modules/vfs_gpfs.c2546
1 files changed, 2546 insertions, 0 deletions
diff --git a/source3/modules/vfs_gpfs.c b/source3/modules/vfs_gpfs.c
new file mode 100644
index 0000000..a8b4e38
--- /dev/null
+++ b/source3/modules/vfs_gpfs.c
@@ -0,0 +1,2546 @@
+/*
+ * Unix SMB/CIFS implementation.
+ * Samba VFS module for GPFS filesystem
+ * Copyright (C) Christian Ambach <cambach1@de.ibm.com> 2006
+ * Copyright (C) Christof Schmitt 2015
+ * Major code contributions by Chetan Shringarpure <chetan.sh@in.ibm.com>
+ * and Gomati Mohanan <gomati.mohanan@in.ibm.com>
+ *
+ * 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 "smbd/smbd.h"
+#include "include/smbprofile.h"
+#include "modules/non_posix_acls.h"
+#include "libcli/security/security.h"
+#include "nfs4_acls.h"
+#include "system/filesys.h"
+#include "auth.h"
+#include "lib/util/tevent_unix.h"
+#include "lib/util/gpfswrap.h"
+
+#include <gnutls/gnutls.h>
+#include <gnutls/crypto.h>
+#include "lib/crypto/gnutls_helpers.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_VFS
+
+#ifndef GPFS_GETACL_NATIVE
+#define GPFS_GETACL_NATIVE 0x00000004
+#endif
+
+struct gpfs_config_data {
+ struct smbacl4_vfs_params nfs4_params;
+ bool sharemodes;
+ bool leases;
+ bool hsm;
+ bool syncio;
+ bool winattr;
+ bool ftruncate;
+ bool getrealfilename;
+ bool dfreequota;
+ bool acl;
+ bool settimes;
+ bool recalls;
+ struct {
+ bool gpfs_fstat_x;
+ } pathref_ok;
+};
+
+struct gpfs_fsp_extension {
+ bool offline;
+};
+
+static inline unsigned int gpfs_acl_flags(gpfs_acl_t *gacl)
+{
+ if (gacl->acl_level == GPFS_ACL_LEVEL_V4FLAGS) {
+ return gacl->v4Level1.acl_flags;
+ }
+ return 0;
+}
+
+static inline gpfs_ace_v4_t *gpfs_ace_ptr(gpfs_acl_t *gacl, unsigned int i)
+{
+ if (gacl->acl_level == GPFS_ACL_LEVEL_V4FLAGS) {
+ return &gacl->v4Level1.ace_v4[i];
+ }
+ return &gacl->ace_v4[i];
+}
+
+static unsigned int vfs_gpfs_access_mask_to_allow(uint32_t access_mask)
+{
+ unsigned int allow = GPFS_SHARE_NONE;
+
+ if (access_mask & (FILE_WRITE_DATA|FILE_APPEND_DATA)) {
+ allow |= GPFS_SHARE_WRITE;
+ }
+ if (access_mask & (FILE_READ_DATA|FILE_EXECUTE)) {
+ allow |= GPFS_SHARE_READ;
+ }
+
+ return allow;
+}
+
+static unsigned int vfs_gpfs_share_access_to_deny(uint32_t share_access)
+{
+ unsigned int deny = GPFS_DENY_NONE;
+
+ if (!(share_access & FILE_SHARE_WRITE)) {
+ deny |= GPFS_DENY_WRITE;
+ }
+ if (!(share_access & FILE_SHARE_READ)) {
+ deny |= GPFS_DENY_READ;
+ }
+
+ /*
+ * GPFS_DENY_DELETE can only be set together with either
+ * GPFS_DENY_WRITE or GPFS_DENY_READ.
+ */
+ if ((deny & (GPFS_DENY_WRITE|GPFS_DENY_READ)) &&
+ !(share_access & FILE_SHARE_DELETE)) {
+ deny |= GPFS_DENY_DELETE;
+ }
+
+ return deny;
+}
+
+static int set_gpfs_sharemode(files_struct *fsp, uint32_t access_mask,
+ uint32_t share_access)
+{
+ unsigned int allow = GPFS_SHARE_NONE;
+ unsigned int deny = GPFS_DENY_NONE;
+ int result;
+
+ if (access_mask == 0) {
+ DBG_DEBUG("Clearing file system share mode.\n");
+ } else {
+ allow = vfs_gpfs_access_mask_to_allow(access_mask);
+ deny = vfs_gpfs_share_access_to_deny(share_access);
+ }
+ DBG_DEBUG("access_mask=0x%x, allow=0x%x, share_access=0x%x, "
+ "deny=0x%x\n", access_mask, allow, share_access, deny);
+
+ result = gpfswrap_set_share(fsp_get_io_fd(fsp), allow, deny);
+ if (result == 0) {
+ return 0;
+ }
+
+ if (errno == EACCES) {
+ DBG_NOTICE("GPFS share mode denied for %s/%s.\n",
+ fsp->conn->connectpath,
+ fsp->fsp_name->base_name);
+ } else if (errno == EPERM) {
+ DBG_ERR("Samba requested GPFS sharemode for %s/%s, but the "
+ "GPFS file system is not configured accordingly. "
+ "Configure file system with mmchfs -D nfs4 or "
+ "set gpfs:sharemodes=no in Samba.\n",
+ fsp->conn->connectpath,
+ fsp->fsp_name->base_name);
+ } else {
+ DBG_ERR("gpfs_set_share failed: %s\n", strerror(errno));
+ }
+
+ return result;
+}
+
+static int vfs_gpfs_filesystem_sharemode(vfs_handle_struct *handle,
+ files_struct *fsp,
+ uint32_t share_access,
+ uint32_t access_mask)
+{
+
+ struct gpfs_config_data *config;
+ int ret = 0;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct gpfs_config_data,
+ return -1);
+
+ if(!config->sharemodes) {
+ return 0;
+ }
+
+ /*
+ * A named stream fsp will have the basefile open in the fsp
+ * fd, so lacking a distinct fd for the stream we have to skip
+ * set_gpfs_sharemode for stream.
+ */
+ if (fsp_is_alternate_stream(fsp)) {
+ DBG_NOTICE("Not requesting GPFS sharemode on stream: %s/%s\n",
+ fsp->conn->connectpath,
+ fsp_str_dbg(fsp));
+ return 0;
+ }
+
+ ret = set_gpfs_sharemode(fsp, access_mask, share_access);
+
+ return ret;
+}
+
+static int vfs_gpfs_close(vfs_handle_struct *handle, files_struct *fsp)
+{
+
+ struct gpfs_config_data *config;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct gpfs_config_data,
+ return -1);
+
+ if (config->sharemodes &&
+ (fsp->fsp_flags.kernel_share_modes_taken))
+ {
+ /*
+ * Always clear GPFS sharemode in case the actual
+ * close gets deferred due to outstanding POSIX locks
+ * (see fd_close_posix)
+ */
+ int ret = gpfswrap_set_share(fsp_get_io_fd(fsp), 0, 0);
+ if (ret != 0) {
+ DBG_ERR("Clearing GPFS sharemode on close failed for "
+ " %s/%s: %s\n",
+ fsp->conn->connectpath,
+ fsp->fsp_name->base_name,
+ strerror(errno));
+ }
+ }
+
+ return SMB_VFS_NEXT_CLOSE(handle, fsp);
+}
+
+#ifdef HAVE_KERNEL_OPLOCKS_LINUX
+static int lease_type_to_gpfs(int leasetype)
+{
+ if (leasetype == F_RDLCK) {
+ return GPFS_LEASE_READ;
+ }
+
+ if (leasetype == F_WRLCK) {
+ return GPFS_LEASE_WRITE;
+ }
+
+ return GPFS_LEASE_NONE;
+}
+
+static int vfs_gpfs_setlease(vfs_handle_struct *handle,
+ files_struct *fsp,
+ int leasetype)
+{
+ struct gpfs_config_data *config;
+ int ret=0;
+
+ START_PROFILE(syscall_linux_setlease);
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct gpfs_config_data,
+ return -1);
+
+ ret = linux_set_lease_sighandler(fsp_get_io_fd(fsp));
+ if (ret == -1) {
+ goto failure;
+ }
+
+ if (config->leases) {
+ int gpfs_lease_type = lease_type_to_gpfs(leasetype);
+ int saved_errno = 0;
+
+ /*
+ * Ensure the lease owner is root to allow
+ * correct delivery of lease-break signals.
+ */
+ become_root();
+ ret = gpfswrap_set_lease(fsp_get_io_fd(fsp), gpfs_lease_type);
+ if (ret < 0) {
+ saved_errno = errno;
+ }
+ unbecome_root();
+
+ if (saved_errno != 0) {
+ errno = saved_errno;
+ }
+ }
+
+failure:
+ END_PROFILE(syscall_linux_setlease);
+
+ return ret;
+}
+
+#else /* HAVE_KERNEL_OPLOCKS_LINUX */
+
+static int vfs_gpfs_setlease(vfs_handle_struct *handle,
+ files_struct *fsp,
+ int leasetype)
+{
+ return ENOSYS;
+}
+#endif /* HAVE_KERNEL_OPLOCKS_LINUX */
+
+static NTSTATUS vfs_gpfs_get_real_filename_at(struct vfs_handle_struct *handle,
+ struct files_struct *dirfsp,
+ const char *name,
+ TALLOC_CTX *mem_ctx,
+ char **found_name)
+{
+ int result;
+ char *full_path = NULL;
+ char *to_free = NULL;
+ char real_pathname[PATH_MAX+1], tmpbuf[PATH_MAX];
+ size_t full_path_len;
+ int buflen;
+ bool mangled;
+ struct gpfs_config_data *config;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct gpfs_config_data,
+ return NT_STATUS_INTERNAL_ERROR);
+
+ if (!config->getrealfilename) {
+ return SMB_VFS_NEXT_GET_REAL_FILENAME_AT(
+ handle, dirfsp, name, mem_ctx, found_name);
+ }
+
+ mangled = mangle_is_mangled(name, handle->conn->params);
+ if (mangled) {
+ return SMB_VFS_NEXT_GET_REAL_FILENAME_AT(
+ handle, dirfsp, name, mem_ctx, found_name);
+ }
+
+ full_path_len = full_path_tos(dirfsp->fsp_name->base_name, name,
+ tmpbuf, sizeof(tmpbuf),
+ &full_path, &to_free);
+ if (full_path_len == -1) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ buflen = sizeof(real_pathname) - 1;
+
+ result = gpfswrap_get_realfilename_path(full_path, real_pathname,
+ &buflen);
+
+ TALLOC_FREE(to_free);
+
+ if ((result == -1) && (errno == ENOSYS)) {
+ return SMB_VFS_NEXT_GET_REAL_FILENAME_AT(
+ handle, dirfsp, name, mem_ctx, found_name);
+ }
+
+ if (result == -1) {
+ DEBUG(10, ("smbd_gpfs_get_realfilename_path returned %s\n",
+ strerror(errno)));
+ return map_nt_error_from_unix(errno);
+ }
+
+ /*
+ * GPFS does not necessarily null-terminate the returned path
+ * but instead returns the buffer length in buflen.
+ */
+
+ if (buflen < sizeof(real_pathname)) {
+ real_pathname[buflen] = '\0';
+ } else {
+ real_pathname[sizeof(real_pathname)-1] = '\0';
+ }
+
+ DBG_DEBUG("%s/%s -> %s\n",
+ fsp_str_dbg(dirfsp),
+ name,
+ real_pathname);
+
+ name = strrchr_m(real_pathname, '/');
+ if (name == NULL) {
+ return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+ }
+
+ *found_name = talloc_strdup(mem_ctx, name+1);
+ if (*found_name == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ return NT_STATUS_OK;
+}
+
+static void sd2gpfs_control(uint16_t control, struct gpfs_acl *gacl)
+{
+ unsigned int gpfs_aclflags = 0;
+ control &= SEC_DESC_DACL_PROTECTED | SEC_DESC_SACL_PROTECTED |
+ SEC_DESC_DACL_AUTO_INHERITED | SEC_DESC_SACL_AUTO_INHERITED |
+ SEC_DESC_DACL_DEFAULTED | SEC_DESC_SACL_DEFAULTED |
+ SEC_DESC_DACL_PRESENT | SEC_DESC_SACL_PRESENT;
+ gpfs_aclflags = control << 8;
+ if (!(control & SEC_DESC_DACL_PRESENT))
+ gpfs_aclflags |= ACL4_FLAG_NULL_DACL;
+ if (!(control & SEC_DESC_SACL_PRESENT))
+ gpfs_aclflags |= ACL4_FLAG_NULL_SACL;
+ gacl->acl_level = GPFS_ACL_LEVEL_V4FLAGS;
+ gacl->v4Level1.acl_flags = gpfs_aclflags;
+}
+
+static uint16_t gpfs2sd_control(unsigned int gpfs_aclflags)
+{
+ uint16_t control = gpfs_aclflags >> 8;
+ control &= SEC_DESC_DACL_PROTECTED | SEC_DESC_SACL_PROTECTED |
+ SEC_DESC_DACL_AUTO_INHERITED | SEC_DESC_SACL_AUTO_INHERITED |
+ SEC_DESC_DACL_DEFAULTED | SEC_DESC_SACL_DEFAULTED |
+ SEC_DESC_DACL_PRESENT | SEC_DESC_SACL_PRESENT;
+ control |= SEC_DESC_SELF_RELATIVE;
+ return control;
+}
+
+static void gpfs_dumpacl(int level, struct gpfs_acl *gacl)
+{
+ gpfs_aclCount_t i;
+ if (gacl==NULL)
+ {
+ DEBUG(0, ("gpfs acl is NULL\n"));
+ return;
+ }
+
+ DEBUG(level, ("len: %d, level: %d, version: %d, nace: %d, "
+ "control: %x\n",
+ gacl->acl_len, gacl->acl_level, gacl->acl_version,
+ gacl->acl_nace, gpfs_acl_flags(gacl)));
+
+ for(i=0; i<gacl->acl_nace; i++)
+ {
+ struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, i);
+ DEBUG(level, ("\tace[%d]: type:%d, flags:0x%x, mask:0x%x, "
+ "iflags:0x%x, who:%u\n",
+ i, gace->aceType, gace->aceFlags, gace->aceMask,
+ gace->aceIFlags, gace->aceWho));
+ }
+}
+
+static int gpfs_getacl_with_capability(struct files_struct *fsp,
+ int flags,
+ void *buf)
+{
+ int ret, saved_errno;
+
+ set_effective_capability(DAC_OVERRIDE_CAPABILITY);
+
+ ret = gpfswrap_fgetacl(fsp_get_pathref_fd(fsp), flags, buf);
+ saved_errno = errno;
+
+ drop_effective_capability(DAC_OVERRIDE_CAPABILITY);
+
+ errno = saved_errno;
+ return ret;
+}
+
+/*
+ * get the ACL from GPFS, allocated on the specified mem_ctx
+ * internally retries when initial buffer was too small
+ *
+ * caller needs to cast result to either
+ * raw = yes: struct gpfs_opaque_acl
+ * raw = no: struct gpfs_acl
+ *
+ */
+static void *vfs_gpfs_getacl(TALLOC_CTX *mem_ctx,
+ struct files_struct *fsp,
+ const bool raw,
+ const gpfs_aclType_t type)
+{
+ const char *fname = fsp->fsp_name->base_name;
+ void *aclbuf;
+ size_t size = 512;
+ int ret, flags;
+ unsigned int *len;
+ size_t struct_size;
+ bool use_capability = false;
+
+again:
+
+ aclbuf = talloc_zero_size(mem_ctx, size);
+ if (aclbuf == NULL) {
+ errno = ENOMEM;
+ return NULL;
+ }
+
+ if (raw) {
+ struct gpfs_opaque_acl *buf = (struct gpfs_opaque_acl *) aclbuf;
+ buf->acl_type = type;
+ flags = GPFS_GETACL_NATIVE;
+ len = (unsigned int *) &(buf->acl_buffer_len);
+ struct_size = sizeof(struct gpfs_opaque_acl);
+ } else {
+ struct gpfs_acl *buf = (struct gpfs_acl *) aclbuf;
+ buf->acl_type = type;
+ buf->acl_level = GPFS_ACL_LEVEL_V4FLAGS;
+ flags = GPFS_GETACL_STRUCT;
+ len = &(buf->acl_len);
+ /* reserve space for control flags in gpfs 3.5 and beyond */
+ struct_size = sizeof(struct gpfs_acl) + sizeof(unsigned int);
+ }
+
+ /* set the length of the buffer as input value */
+ *len = size;
+
+ if (use_capability) {
+ ret = gpfs_getacl_with_capability(fsp, flags, aclbuf);
+ } else {
+ ret = gpfswrap_fgetacl(fsp_get_pathref_fd(fsp), flags, aclbuf);
+ if ((ret != 0) && (errno == EACCES)) {
+ DBG_DEBUG("Retry with DAC capability for %s\n", fname);
+ use_capability = true;
+ ret = gpfs_getacl_with_capability(fsp, flags, aclbuf);
+ }
+ }
+
+ if ((ret != 0) && (errno == ENOSPC)) {
+ /*
+ * get the size needed to accommodate the complete buffer
+ *
+ * the value returned only applies to the ACL blob in the
+ * struct so make sure to also have headroom for the first
+ * struct members by adding room for the complete struct
+ * (might be a few bytes too much then)
+ */
+ size = *len + struct_size;
+ talloc_free(aclbuf);
+ DEBUG(10, ("Increasing ACL buffer size to %zu\n", size));
+ goto again;
+ }
+
+ if (ret != 0) {
+ DEBUG(5, ("smbd_gpfs_getacl failed with %s\n",
+ strerror(errno)));
+ talloc_free(aclbuf);
+ return NULL;
+ }
+
+ return aclbuf;
+}
+
+/* Tries to get nfs4 acls and returns SMB ACL allocated.
+ * On failure returns 1 if it got non-NFSv4 ACL to prompt
+ * retry with POSIX ACL checks.
+ * On failure returns -1 if there is system (GPFS) error, check errno.
+ * Returns 0 on success
+ */
+static int gpfs_get_nfs4_acl(TALLOC_CTX *mem_ctx,
+ struct files_struct *fsp,
+ struct SMB4ACL_T **ppacl)
+{
+ const char *fname = fsp->fsp_name->base_name;
+ gpfs_aclCount_t i;
+ struct gpfs_acl *gacl = NULL;
+ DEBUG(10, ("gpfs_get_nfs4_acl invoked for %s\n", fname));
+
+ /* Get the ACL */
+ gacl = (struct gpfs_acl*) vfs_gpfs_getacl(talloc_tos(), fsp,
+ false, 0);
+ if (gacl == NULL) {
+ DEBUG(9, ("gpfs_getacl failed for %s with %s\n",
+ fname, strerror(errno)));
+ if (errno == ENODATA) {
+ /*
+ * GPFS returns ENODATA for snapshot
+ * directories. Retry with POSIX ACLs check.
+ */
+ return 1;
+ }
+
+ return -1;
+ }
+
+ if (gacl->acl_type != GPFS_ACL_TYPE_NFS4) {
+ DEBUG(10, ("Got non-nfsv4 acl\n"));
+ /* Retry with POSIX ACLs check */
+ talloc_free(gacl);
+ return 1;
+ }
+
+ *ppacl = smb_create_smb4acl(mem_ctx);
+
+ if (gacl->acl_level == GPFS_ACL_LEVEL_V4FLAGS) {
+ uint16_t control = gpfs2sd_control(gpfs_acl_flags(gacl));
+ smbacl4_set_controlflags(*ppacl, control);
+ }
+
+ DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d, control: %x\n",
+ gacl->acl_len, gacl->acl_level, gacl->acl_version,
+ gacl->acl_nace, gpfs_acl_flags(gacl)));
+
+ for (i=0; i<gacl->acl_nace; i++) {
+ struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, i);
+ SMB_ACE4PROP_T smbace = { 0 };
+ DEBUG(10, ("type: %d, iflags: %x, flags: %x, mask: %x, "
+ "who: %d\n", gace->aceType, gace->aceIFlags,
+ gace->aceFlags, gace->aceMask, gace->aceWho));
+
+ if (gace->aceIFlags & ACE4_IFLAG_SPECIAL_ID) {
+ smbace.flags |= SMB_ACE4_ID_SPECIAL;
+ switch (gace->aceWho) {
+ case ACE4_SPECIAL_OWNER:
+ smbace.who.special_id = SMB_ACE4_WHO_OWNER;
+ break;
+ case ACE4_SPECIAL_GROUP:
+ smbace.who.special_id = SMB_ACE4_WHO_GROUP;
+ break;
+ case ACE4_SPECIAL_EVERYONE:
+ smbace.who.special_id = SMB_ACE4_WHO_EVERYONE;
+ break;
+ default:
+ DEBUG(8, ("invalid special gpfs id %d "
+ "ignored\n", gace->aceWho));
+ continue; /* don't add it */
+ }
+ } else {
+ if (gace->aceFlags & ACE4_FLAG_GROUP_ID)
+ smbace.who.gid = gace->aceWho;
+ else
+ smbace.who.uid = gace->aceWho;
+ }
+
+ /* remove redundant deny entries */
+ if (i > 0 && gace->aceType == SMB_ACE4_ACCESS_DENIED_ACE_TYPE) {
+ struct gpfs_ace_v4 *prev = gpfs_ace_ptr(gacl, i - 1);
+ if (prev->aceType == SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE &&
+ prev->aceFlags == gace->aceFlags &&
+ prev->aceIFlags == gace->aceIFlags &&
+ (gace->aceMask & prev->aceMask) == 0 &&
+ gace->aceWho == prev->aceWho) {
+ /* it's redundant - skip it */
+ continue;
+ }
+ }
+
+ smbace.aceType = gace->aceType;
+ smbace.aceFlags = gace->aceFlags;
+ smbace.aceMask = gace->aceMask;
+ smb_add_ace4(*ppacl, &smbace);
+ }
+
+ talloc_free(gacl);
+
+ return 0;
+}
+
+static NTSTATUS gpfsacl_fget_nt_acl(vfs_handle_struct *handle,
+ files_struct *fsp, uint32_t security_info,
+ TALLOC_CTX *mem_ctx,
+ struct security_descriptor **ppdesc)
+{
+ struct SMB4ACL_T *pacl = NULL;
+ int result;
+ struct gpfs_config_data *config;
+ TALLOC_CTX *frame = talloc_stackframe();
+ NTSTATUS status;
+
+ *ppdesc = NULL;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct gpfs_config_data,
+ return NT_STATUS_INTERNAL_ERROR);
+
+ if (!config->acl) {
+ status = SMB_VFS_NEXT_FGET_NT_ACL(handle, fsp, security_info,
+ mem_ctx, ppdesc);
+ TALLOC_FREE(frame);
+ return status;
+ }
+
+ result = gpfs_get_nfs4_acl(frame, fsp, &pacl);
+
+ if (result == 0) {
+ status = smb_fget_nt_acl_nfs4(fsp, &config->nfs4_params,
+ security_info,
+ mem_ctx, ppdesc, pacl);
+ TALLOC_FREE(frame);
+ return status;
+ }
+
+ if (result > 0) {
+ DEBUG(10, ("retrying with posix acl...\n"));
+ status = posix_fget_nt_acl(fsp, security_info,
+ mem_ctx, ppdesc);
+ TALLOC_FREE(frame);
+ return status;
+ }
+
+ TALLOC_FREE(frame);
+
+ /* GPFS ACL was not read, something wrong happened, error code is set in errno */
+ return map_nt_error_from_unix(errno);
+}
+
+static bool vfs_gpfs_nfs4_ace_to_gpfs_ace(SMB_ACE4PROP_T *nfs4_ace,
+ struct gpfs_ace_v4 *gace,
+ uid_t owner_uid)
+{
+ gace->aceType = nfs4_ace->aceType;
+ gace->aceFlags = nfs4_ace->aceFlags;
+ gace->aceMask = nfs4_ace->aceMask;
+
+ if (nfs4_ace->flags & SMB_ACE4_ID_SPECIAL) {
+ switch(nfs4_ace->who.special_id) {
+ case SMB_ACE4_WHO_EVERYONE:
+ gace->aceIFlags = ACE4_IFLAG_SPECIAL_ID;
+ gace->aceWho = ACE4_SPECIAL_EVERYONE;
+ break;
+ case SMB_ACE4_WHO_OWNER:
+ /*
+ * With GPFS it is not possible to deny ACL or
+ * attribute access to the owner. Setting an
+ * ACL with such an entry is not possible.
+ * Denying ACL or attribute access for the
+ * owner through a named ACL entry can be
+ * stored in an ACL, it is just not effective.
+ *
+ * Map this case to a named entry to allow at
+ * least setting this ACL, which will be
+ * enforced by the smbd permission check. Do
+ * not do this for an inheriting OWNER entry,
+ * as this represents a CREATOR OWNER ACE. The
+ * remaining limitation is that CREATOR OWNER
+ * cannot deny ACL or attribute access.
+ */
+ if (!nfs_ace_is_inherit(nfs4_ace) &&
+ nfs4_ace->aceType ==
+ SMB_ACE4_ACCESS_DENIED_ACE_TYPE &&
+ nfs4_ace->aceMask & (SMB_ACE4_READ_ATTRIBUTES|
+ SMB_ACE4_WRITE_ATTRIBUTES|
+ SMB_ACE4_READ_ACL|
+ SMB_ACE4_WRITE_ACL)) {
+ gace->aceIFlags = 0;
+ gace->aceWho = owner_uid;
+ } else {
+ gace->aceIFlags = ACE4_IFLAG_SPECIAL_ID;
+ gace->aceWho = ACE4_SPECIAL_OWNER;
+ }
+ break;
+ case SMB_ACE4_WHO_GROUP:
+ gace->aceIFlags = ACE4_IFLAG_SPECIAL_ID;
+ gace->aceWho = ACE4_SPECIAL_GROUP;
+ break;
+ default:
+ DBG_WARNING("Unsupported special_id %d\n",
+ nfs4_ace->who.special_id);
+ return false;
+ }
+
+ return true;
+ }
+
+ gace->aceIFlags = 0;
+ gace->aceWho = (nfs4_ace->aceFlags & SMB_ACE4_IDENTIFIER_GROUP) ?
+ nfs4_ace->who.gid : nfs4_ace->who.uid;
+
+ return true;
+}
+
+static struct gpfs_acl *vfs_gpfs_smbacl2gpfsacl(TALLOC_CTX *mem_ctx,
+ files_struct *fsp,
+ struct SMB4ACL_T *smbacl,
+ bool controlflags)
+{
+ struct gpfs_acl *gacl;
+ gpfs_aclLen_t gacl_len;
+ struct SMB4ACE_T *smbace;
+
+ gacl_len = offsetof(gpfs_acl_t, ace_v4) + sizeof(unsigned int)
+ + smb_get_naces(smbacl) * sizeof(gpfs_ace_v4_t);
+
+ gacl = (struct gpfs_acl *)TALLOC_SIZE(mem_ctx, gacl_len);
+ if (gacl == NULL) {
+ DEBUG(0, ("talloc failed\n"));
+ errno = ENOMEM;
+ return NULL;
+ }
+
+ gacl->acl_level = GPFS_ACL_LEVEL_BASE;
+ gacl->acl_version = GPFS_ACL_VERSION_NFS4;
+ gacl->acl_type = GPFS_ACL_TYPE_NFS4;
+ gacl->acl_nace = 0; /* change later... */
+
+ if (controlflags) {
+ gacl->acl_level = GPFS_ACL_LEVEL_V4FLAGS;
+ sd2gpfs_control(smbacl4_get_controlflags(smbacl), gacl);
+ }
+
+ for (smbace=smb_first_ace4(smbacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
+ struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, gacl->acl_nace);
+ SMB_ACE4PROP_T *aceprop = smb_get_ace4(smbace);
+ bool add_ace;
+
+ add_ace = vfs_gpfs_nfs4_ace_to_gpfs_ace(aceprop, gace,
+ fsp->fsp_name->st.st_ex_uid);
+ if (!add_ace) {
+ continue;
+ }
+
+ gacl->acl_nace++;
+ }
+ gacl->acl_len = (char *)gpfs_ace_ptr(gacl, gacl->acl_nace)
+ - (char *)gacl;
+ return gacl;
+}
+
+static bool gpfsacl_process_smbacl(vfs_handle_struct *handle,
+ files_struct *fsp,
+ struct SMB4ACL_T *smbacl)
+{
+ int ret;
+ struct gpfs_acl *gacl;
+ TALLOC_CTX *mem_ctx = talloc_tos();
+
+ gacl = vfs_gpfs_smbacl2gpfsacl(mem_ctx, fsp, smbacl, true);
+ if (gacl == NULL) { /* out of memory */
+ return False;
+ }
+ ret = gpfswrap_putacl(fsp->fsp_name->base_name,
+ GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gacl);
+
+ if ((ret != 0) && (errno == EINVAL)) {
+ DEBUG(10, ("Retry without nfs41 control flags\n"));
+ talloc_free(gacl);
+ gacl = vfs_gpfs_smbacl2gpfsacl(mem_ctx, fsp, smbacl, false);
+ if (gacl == NULL) { /* out of memory */
+ return False;
+ }
+ ret = gpfswrap_putacl(fsp->fsp_name->base_name,
+ GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA,
+ gacl);
+ }
+
+ if (ret != 0) {
+ DEBUG(8, ("gpfs_putacl failed with %s\n", strerror(errno)));
+ gpfs_dumpacl(8, gacl);
+ return False;
+ }
+
+ DEBUG(10, ("gpfs_putacl succeeded\n"));
+ return True;
+}
+
+static NTSTATUS gpfsacl_set_nt_acl_internal(vfs_handle_struct *handle, files_struct *fsp, uint32_t security_info_sent, const struct security_descriptor *psd)
+{
+ struct gpfs_acl *acl;
+ NTSTATUS result = NT_STATUS_ACCESS_DENIED;
+
+ acl = (struct gpfs_acl*) vfs_gpfs_getacl(talloc_tos(),
+ fsp,
+ false, 0);
+ if (acl == NULL) {
+ return map_nt_error_from_unix(errno);
+ }
+
+ if (acl->acl_version == GPFS_ACL_VERSION_NFS4) {
+ struct gpfs_config_data *config;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct gpfs_config_data,
+ return NT_STATUS_INTERNAL_ERROR);
+
+ result = smb_set_nt_acl_nfs4(handle,
+ fsp, &config->nfs4_params, security_info_sent, psd,
+ gpfsacl_process_smbacl);
+ } else { /* assume POSIX ACL - by default... */
+ result = set_nt_acl(fsp, security_info_sent, psd);
+ }
+
+ talloc_free(acl);
+ return result;
+}
+
+static NTSTATUS gpfsacl_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32_t security_info_sent, const struct security_descriptor *psd)
+{
+ struct gpfs_config_data *config;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct gpfs_config_data,
+ return NT_STATUS_INTERNAL_ERROR);
+
+ if (!config->acl) {
+ return SMB_VFS_NEXT_FSET_NT_ACL(handle, fsp, security_info_sent, psd);
+ }
+
+ return gpfsacl_set_nt_acl_internal(handle, fsp, security_info_sent, psd);
+}
+
+static SMB_ACL_T gpfs2smb_acl(const struct gpfs_acl *pacl, TALLOC_CTX *mem_ctx)
+{
+ SMB_ACL_T result;
+ gpfs_aclCount_t i;
+
+ result = sys_acl_init(mem_ctx);
+ if (result == NULL) {
+ errno = ENOMEM;
+ return NULL;
+ }
+
+ result->count = pacl->acl_nace;
+ result->acl = talloc_realloc(result, result->acl, struct smb_acl_entry,
+ result->count);
+ if (result->acl == NULL) {
+ TALLOC_FREE(result);
+ errno = ENOMEM;
+ return NULL;
+ }
+
+ for (i=0; i<pacl->acl_nace; i++) {
+ struct smb_acl_entry *ace = &result->acl[i];
+ const struct gpfs_ace_v1 *g_ace = &pacl->ace_v1[i];
+
+ DEBUG(10, ("Converting type %d id %lu perm %x\n",
+ (int)g_ace->ace_type, (unsigned long)g_ace->ace_who,
+ (int)g_ace->ace_perm));
+
+ switch (g_ace->ace_type) {
+ case GPFS_ACL_USER:
+ ace->a_type = SMB_ACL_USER;
+ ace->info.user.uid = (uid_t)g_ace->ace_who;
+ break;
+ case GPFS_ACL_USER_OBJ:
+ ace->a_type = SMB_ACL_USER_OBJ;
+ break;
+ case GPFS_ACL_GROUP:
+ ace->a_type = SMB_ACL_GROUP;
+ ace->info.group.gid = (gid_t)g_ace->ace_who;
+ break;
+ case GPFS_ACL_GROUP_OBJ:
+ ace->a_type = SMB_ACL_GROUP_OBJ;
+ break;
+ case GPFS_ACL_OTHER:
+ ace->a_type = SMB_ACL_OTHER;
+ break;
+ case GPFS_ACL_MASK:
+ ace->a_type = SMB_ACL_MASK;
+ break;
+ default:
+ DEBUG(10, ("Got invalid ace_type: %d\n",
+ g_ace->ace_type));
+ TALLOC_FREE(result);
+ errno = EINVAL;
+ return NULL;
+ }
+
+ ace->a_perm = 0;
+ ace->a_perm |= (g_ace->ace_perm & ACL_PERM_READ) ?
+ SMB_ACL_READ : 0;
+ ace->a_perm |= (g_ace->ace_perm & ACL_PERM_WRITE) ?
+ SMB_ACL_WRITE : 0;
+ ace->a_perm |= (g_ace->ace_perm & ACL_PERM_EXECUTE) ?
+ SMB_ACL_EXECUTE : 0;
+
+ DEBUGADD(10, ("Converted to %d perm %x\n",
+ ace->a_type, ace->a_perm));
+ }
+
+ return result;
+}
+
+static SMB_ACL_T gpfsacl_get_posix_acl(struct files_struct *fsp,
+ gpfs_aclType_t type,
+ TALLOC_CTX *mem_ctx)
+{
+ struct gpfs_acl *pacl;
+ SMB_ACL_T result = NULL;
+
+ pacl = vfs_gpfs_getacl(talloc_tos(), fsp, false, type);
+
+ if (pacl == NULL) {
+ DBG_DEBUG("vfs_gpfs_getacl failed for %s with %s\n",
+ fsp_str_dbg(fsp), strerror(errno));
+ if (errno == 0) {
+ errno = EINVAL;
+ }
+ goto done;
+ }
+
+ if (pacl->acl_version != GPFS_ACL_VERSION_POSIX) {
+ DEBUG(10, ("Got acl version %d, expected %d\n",
+ pacl->acl_version, GPFS_ACL_VERSION_POSIX));
+ errno = EINVAL;
+ goto done;
+ }
+
+ DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n",
+ pacl->acl_len, pacl->acl_level, pacl->acl_version,
+ pacl->acl_nace));
+
+ result = gpfs2smb_acl(pacl, mem_ctx);
+ if (result != NULL) {
+ errno = 0;
+ }
+
+ done:
+
+ if (pacl != NULL) {
+ talloc_free(pacl);
+ }
+ if (errno != 0) {
+ TALLOC_FREE(result);
+ }
+ return result;
+}
+
+static SMB_ACL_T gpfsacl_sys_acl_get_fd(vfs_handle_struct *handle,
+ files_struct *fsp,
+ SMB_ACL_TYPE_T type,
+ TALLOC_CTX *mem_ctx)
+{
+ gpfs_aclType_t gpfs_type;
+ struct gpfs_config_data *config;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct gpfs_config_data,
+ return NULL);
+
+ if (!config->acl) {
+ return SMB_VFS_NEXT_SYS_ACL_GET_FD(handle, fsp, type, mem_ctx);
+ }
+
+ switch(type) {
+ case SMB_ACL_TYPE_ACCESS:
+ gpfs_type = GPFS_ACL_TYPE_ACCESS;
+ break;
+ case SMB_ACL_TYPE_DEFAULT:
+ gpfs_type = GPFS_ACL_TYPE_DEFAULT;
+ break;
+ default:
+ DEBUG(0, ("Got invalid type: %d\n", type));
+ smb_panic("exiting");
+ }
+ return gpfsacl_get_posix_acl(fsp, gpfs_type, mem_ctx);
+}
+
+static int gpfsacl_sys_acl_blob_get_fd(vfs_handle_struct *handle,
+ files_struct *fsp,
+ TALLOC_CTX *mem_ctx,
+ char **blob_description,
+ DATA_BLOB *blob)
+{
+ struct gpfs_config_data *config;
+ struct gpfs_opaque_acl *acl = NULL;
+ DATA_BLOB aclblob;
+ int result;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct gpfs_config_data,
+ return -1);
+
+ if (!config->acl) {
+ return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FD(handle, fsp, mem_ctx,
+ blob_description, blob);
+ }
+
+ errno = 0;
+ acl = (struct gpfs_opaque_acl *) vfs_gpfs_getacl(mem_ctx,
+ fsp,
+ true,
+ GPFS_ACL_TYPE_NFS4);
+
+ if (errno) {
+ DEBUG(5, ("vfs_gpfs_getacl finished with errno %d: %s\n",
+ errno, strerror(errno)));
+
+ /* EINVAL means POSIX ACL, bail out on other cases */
+ if (errno != EINVAL) {
+ return -1;
+ }
+ }
+
+ if (acl != NULL) {
+ /*
+ * file has NFSv4 ACL
+ *
+ * we only need the actual ACL blob here
+ * acl_version will always be NFS4 because we asked
+ * for NFS4
+ * acl_type is only used for POSIX ACLs
+ */
+ aclblob.data = (uint8_t*) acl->acl_var_data;
+ aclblob.length = acl->acl_buffer_len;
+
+ *blob_description = talloc_strdup(mem_ctx, "gpfs_nfs4_acl");
+ if (!*blob_description) {
+ talloc_free(acl);
+ errno = ENOMEM;
+ return -1;
+ }
+
+ result = non_posix_sys_acl_blob_get_fd_helper(handle, fsp,
+ aclblob, mem_ctx,
+ blob);
+
+ talloc_free(acl);
+ return result;
+ }
+
+ /* fall back to POSIX ACL */
+ return posix_sys_acl_blob_get_fd(handle, fsp, mem_ctx,
+ blob_description, blob);
+}
+
+static struct gpfs_acl *smb2gpfs_acl(const SMB_ACL_T pacl,
+ SMB_ACL_TYPE_T type)
+{
+ gpfs_aclLen_t len;
+ struct gpfs_acl *result;
+ int i;
+
+ DEBUG(10, ("smb2gpfs_acl: Got ACL with %d entries\n", pacl->count));
+
+ len = offsetof(gpfs_acl_t, ace_v1) + (pacl->count) *
+ sizeof(gpfs_ace_v1_t);
+
+ result = (struct gpfs_acl *)SMB_MALLOC(len);
+ if (result == NULL) {
+ errno = ENOMEM;
+ return result;
+ }
+
+ result->acl_len = len;
+ result->acl_level = 0;
+ result->acl_version = GPFS_ACL_VERSION_POSIX;
+ result->acl_type = (type == SMB_ACL_TYPE_DEFAULT) ?
+ GPFS_ACL_TYPE_DEFAULT : GPFS_ACL_TYPE_ACCESS;
+ result->acl_nace = pacl->count;
+
+ for (i=0; i<pacl->count; i++) {
+ const struct smb_acl_entry *ace = &pacl->acl[i];
+ struct gpfs_ace_v1 *g_ace = &result->ace_v1[i];
+
+ DEBUG(10, ("Converting type %d perm %x\n",
+ (int)ace->a_type, (int)ace->a_perm));
+
+ g_ace->ace_perm = 0;
+
+ switch(ace->a_type) {
+ case SMB_ACL_USER:
+ g_ace->ace_type = GPFS_ACL_USER;
+ g_ace->ace_who = (gpfs_uid_t)ace->info.user.uid;
+ break;
+ case SMB_ACL_USER_OBJ:
+ g_ace->ace_type = GPFS_ACL_USER_OBJ;
+ g_ace->ace_perm |= ACL_PERM_CONTROL;
+ g_ace->ace_who = 0;
+ break;
+ case SMB_ACL_GROUP:
+ g_ace->ace_type = GPFS_ACL_GROUP;
+ g_ace->ace_who = (gpfs_uid_t)ace->info.group.gid;
+ break;
+ case SMB_ACL_GROUP_OBJ:
+ g_ace->ace_type = GPFS_ACL_GROUP_OBJ;
+ g_ace->ace_who = 0;
+ break;
+ case SMB_ACL_MASK:
+ g_ace->ace_type = GPFS_ACL_MASK;
+ g_ace->ace_perm = 0x8f;
+ g_ace->ace_who = 0;
+ break;
+ case SMB_ACL_OTHER:
+ g_ace->ace_type = GPFS_ACL_OTHER;
+ g_ace->ace_who = 0;
+ break;
+ default:
+ DEBUG(10, ("Got invalid ace_type: %d\n", ace->a_type));
+ errno = EINVAL;
+ SAFE_FREE(result);
+ return NULL;
+ }
+
+ g_ace->ace_perm |= (ace->a_perm & SMB_ACL_READ) ?
+ ACL_PERM_READ : 0;
+ g_ace->ace_perm |= (ace->a_perm & SMB_ACL_WRITE) ?
+ ACL_PERM_WRITE : 0;
+ g_ace->ace_perm |= (ace->a_perm & SMB_ACL_EXECUTE) ?
+ ACL_PERM_EXECUTE : 0;
+
+ DEBUGADD(10, ("Converted to %d id %d perm %x\n",
+ g_ace->ace_type, g_ace->ace_who, g_ace->ace_perm));
+ }
+
+ return result;
+}
+
+static int gpfsacl_sys_acl_set_fd(vfs_handle_struct *handle,
+ files_struct *fsp,
+ SMB_ACL_TYPE_T type,
+ SMB_ACL_T theacl)
+{
+ struct gpfs_config_data *config;
+ struct gpfs_acl *gpfs_acl = NULL;
+ int result;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct gpfs_config_data,
+ return -1);
+
+ if (!config->acl) {
+ return SMB_VFS_NEXT_SYS_ACL_SET_FD(handle, fsp, type, theacl);
+ }
+
+ gpfs_acl = smb2gpfs_acl(theacl, type);
+ if (gpfs_acl == NULL) {
+ return -1;
+ }
+
+ /*
+ * This is no longer a handle based call.
+ */
+ result = gpfswrap_putacl(fsp->fsp_name->base_name,
+ GPFS_PUTACL_STRUCT|GPFS_ACL_SAMBA,
+ gpfs_acl);
+ SAFE_FREE(gpfs_acl);
+ return result;
+}
+
+static int gpfsacl_sys_acl_delete_def_fd(vfs_handle_struct *handle,
+ files_struct *fsp)
+{
+ struct gpfs_config_data *config;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct gpfs_config_data,
+ return -1);
+
+ if (!config->acl) {
+ return SMB_VFS_NEXT_SYS_ACL_DELETE_DEF_FD(handle, fsp);
+ }
+
+ errno = ENOTSUP;
+ return -1;
+}
+
+
+/*
+ * Assumed: mode bits are shiftable and standard
+ * Output: the new aceMask field for an smb nfs4 ace
+ */
+static uint32_t gpfsacl_mask_filter(uint32_t aceType, uint32_t aceMask, uint32_t rwx)
+{
+ const uint32_t posix_nfs4map[3] = {
+ SMB_ACE4_EXECUTE, /* execute */
+ SMB_ACE4_WRITE_DATA | SMB_ACE4_APPEND_DATA, /* write; GPFS specific */
+ SMB_ACE4_READ_DATA /* read */
+ };
+ int i;
+ uint32_t posix_mask = 0x01;
+ uint32_t posix_bit;
+ uint32_t nfs4_bits;
+
+ for(i=0; i<3; i++) {
+ nfs4_bits = posix_nfs4map[i];
+ posix_bit = rwx & posix_mask;
+
+ if (aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE) {
+ if (posix_bit)
+ aceMask |= nfs4_bits;
+ else
+ aceMask &= ~nfs4_bits;
+ } else {
+ /* add deny bits when suitable */
+ if (!posix_bit)
+ aceMask |= nfs4_bits;
+ else
+ aceMask &= ~nfs4_bits;
+ } /* other ace types are unexpected */
+
+ posix_mask <<= 1;
+ }
+
+ return aceMask;
+}
+
+static int gpfsacl_emu_chmod(vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ mode_t mode)
+{
+ struct smb_filename *fname = fsp->fsp_name;
+ char *path = fsp->fsp_name->base_name;
+ struct SMB4ACL_T *pacl = NULL;
+ int result;
+ bool haveAllowEntry[SMB_ACE4_WHO_EVERYONE + 1] = {False, False, False, False};
+ int i;
+ files_struct fake_fsp = { 0 }; /* TODO: rationalize parametrization */
+ struct SMB4ACE_T *smbace;
+ TALLOC_CTX *frame = talloc_stackframe();
+
+ DEBUG(10, ("gpfsacl_emu_chmod invoked for %s mode %o\n", path, mode));
+
+ result = gpfs_get_nfs4_acl(frame, fsp, &pacl);
+ if (result) {
+ TALLOC_FREE(frame);
+ return result;
+ }
+
+ if (mode & ~(S_IRWXU | S_IRWXG | S_IRWXO)) {
+ DEBUG(2, ("WARNING: cutting extra mode bits %o on %s\n", mode, path));
+ }
+
+ for (smbace=smb_first_ace4(pacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
+ SMB_ACE4PROP_T *ace = smb_get_ace4(smbace);
+ uint32_t specid = ace->who.special_id;
+
+ if (ace->flags&SMB_ACE4_ID_SPECIAL &&
+ ace->aceType<=SMB_ACE4_ACCESS_DENIED_ACE_TYPE &&
+ specid <= SMB_ACE4_WHO_EVERYONE) {
+
+ uint32_t newMask;
+
+ if (ace->aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE)
+ haveAllowEntry[specid] = True;
+
+ /* mode >> 6 for @owner, mode >> 3 for @group,
+ * mode >> 0 for @everyone */
+ newMask = gpfsacl_mask_filter(ace->aceType, ace->aceMask,
+ mode >> ((SMB_ACE4_WHO_EVERYONE - specid) * 3));
+ if (ace->aceMask!=newMask) {
+ DEBUG(10, ("ace changed for %s (%o -> %o) id=%d\n",
+ path, ace->aceMask, newMask, specid));
+ }
+ ace->aceMask = newMask;
+ }
+ }
+
+ /* make sure we have at least ALLOW entries
+ * for all the 3 special ids (@EVERYONE, @OWNER, @GROUP)
+ * - if necessary
+ */
+ for(i = SMB_ACE4_WHO_OWNER; i<=SMB_ACE4_WHO_EVERYONE; i++) {
+ SMB_ACE4PROP_T ace = { 0 };
+
+ if (haveAllowEntry[i]==True)
+ continue;
+
+ ace.aceType = SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE;
+ ace.flags |= SMB_ACE4_ID_SPECIAL;
+ ace.who.special_id = i;
+
+ if (i==SMB_ACE4_WHO_GROUP) /* not sure it's necessary... */
+ ace.aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
+
+ ace.aceMask = gpfsacl_mask_filter(ace.aceType, ace.aceMask,
+ mode >> ((SMB_ACE4_WHO_EVERYONE - i) * 3));
+
+ /* don't add unnecessary aces */
+ if (!ace.aceMask)
+ continue;
+
+ /* we add it to the END - as windows expects allow aces */
+ smb_add_ace4(pacl, &ace);
+ DEBUG(10, ("Added ALLOW ace for %s, mode=%o, id=%d, aceMask=%x\n",
+ path, mode, i, ace.aceMask));
+ }
+
+ /* don't add complementary DENY ACEs here */
+ fake_fsp.fsp_name = synthetic_smb_fname(frame,
+ path,
+ NULL,
+ NULL,
+ fname->twrp,
+ 0);
+ if (fake_fsp.fsp_name == NULL) {
+ errno = ENOMEM;
+ TALLOC_FREE(frame);
+ return -1;
+ }
+ /* put the acl */
+ if (gpfsacl_process_smbacl(handle, &fake_fsp, pacl) == False) {
+ TALLOC_FREE(frame);
+ return -1;
+ }
+
+ TALLOC_FREE(frame);
+ return 0; /* ok for [f]chmod */
+}
+
+static int vfs_gpfs_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
+{
+ SMB_STRUCT_STAT st;
+ int rc;
+
+ rc = SMB_VFS_NEXT_FSTAT(handle, fsp, &st);
+ if (rc != 0) {
+ return -1;
+ }
+
+ /* avoid chmod() if possible, to preserve acls */
+ if ((st.st_ex_mode & ~S_IFMT) == mode) {
+ return 0;
+ }
+
+ rc = gpfsacl_emu_chmod(handle, fsp, mode);
+ if (rc == 1) {
+ return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
+ }
+ return rc;
+}
+
+static uint32_t vfs_gpfs_winattrs_to_dosmode(unsigned int winattrs)
+{
+ uint32_t dosmode = 0;
+
+ if (winattrs & GPFS_WINATTR_ARCHIVE){
+ dosmode |= FILE_ATTRIBUTE_ARCHIVE;
+ }
+ if (winattrs & GPFS_WINATTR_HIDDEN){
+ dosmode |= FILE_ATTRIBUTE_HIDDEN;
+ }
+ if (winattrs & GPFS_WINATTR_SYSTEM){
+ dosmode |= FILE_ATTRIBUTE_SYSTEM;
+ }
+ if (winattrs & GPFS_WINATTR_READONLY){
+ dosmode |= FILE_ATTRIBUTE_READONLY;
+ }
+ if (winattrs & GPFS_WINATTR_SPARSE_FILE) {
+ dosmode |= FILE_ATTRIBUTE_SPARSE;
+ }
+ if (winattrs & GPFS_WINATTR_OFFLINE) {
+ dosmode |= FILE_ATTRIBUTE_OFFLINE;
+ }
+
+ return dosmode;
+}
+
+static unsigned int vfs_gpfs_dosmode_to_winattrs(uint32_t dosmode)
+{
+ unsigned int winattrs = 0;
+
+ if (dosmode & FILE_ATTRIBUTE_ARCHIVE){
+ winattrs |= GPFS_WINATTR_ARCHIVE;
+ }
+ if (dosmode & FILE_ATTRIBUTE_HIDDEN){
+ winattrs |= GPFS_WINATTR_HIDDEN;
+ }
+ if (dosmode & FILE_ATTRIBUTE_SYSTEM){
+ winattrs |= GPFS_WINATTR_SYSTEM;
+ }
+ if (dosmode & FILE_ATTRIBUTE_READONLY){
+ winattrs |= GPFS_WINATTR_READONLY;
+ }
+ if (dosmode & FILE_ATTRIBUTE_SPARSE) {
+ winattrs |= GPFS_WINATTR_SPARSE_FILE;
+ }
+ if (dosmode & FILE_ATTRIBUTE_OFFLINE) {
+ winattrs |= GPFS_WINATTR_OFFLINE;
+ }
+
+ return winattrs;
+}
+
+static struct timespec gpfs_timestruc64_to_timespec(struct gpfs_timestruc64 g)
+{
+ return (struct timespec) { .tv_sec = g.tv_sec, .tv_nsec = g.tv_nsec };
+}
+
+static NTSTATUS vfs_gpfs_fget_dos_attributes(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ uint32_t *dosmode)
+{
+ struct gpfs_config_data *config;
+ int fd = fsp_get_pathref_fd(fsp);
+ struct sys_proc_fd_path_buf buf;
+ const char *p = NULL;
+ struct gpfs_iattr64 iattr = { };
+ unsigned int litemask = 0;
+ struct timespec ts;
+ int ret;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct gpfs_config_data,
+ return NT_STATUS_INTERNAL_ERROR);
+
+ if (!config->winattr) {
+ return SMB_VFS_NEXT_FGET_DOS_ATTRIBUTES(handle, fsp, dosmode);
+ }
+
+ if (fsp->fsp_flags.is_pathref && !config->pathref_ok.gpfs_fstat_x) {
+ if (fsp->fsp_flags.have_proc_fds) {
+ p = sys_proc_fd_path(fd, &buf);
+ } else {
+ p = fsp->fsp_name->base_name;
+ }
+ }
+
+ if (p != NULL) {
+ ret = gpfswrap_stat_x(p, &litemask, &iattr, sizeof(iattr));
+ } else {
+ ret = gpfswrap_fstat_x(fd, &litemask, &iattr, sizeof(iattr));
+ }
+ if (ret == -1 && errno == ENOSYS) {
+ return SMB_VFS_NEXT_FGET_DOS_ATTRIBUTES(handle, fsp, dosmode);
+ }
+
+ if (ret == -1 && errno == EACCES) {
+ int saved_errno = 0;
+
+ /*
+ * According to MS-FSA 2.1.5.1.2.1 "Algorithm to Check Access to
+ * an Existing File" FILE_LIST_DIRECTORY on a directory implies
+ * FILE_READ_ATTRIBUTES for directory entries. Being able to
+ * open a file implies FILE_LIST_DIRECTORY.
+ */
+
+ set_effective_capability(DAC_OVERRIDE_CAPABILITY);
+
+ if (p != NULL) {
+ ret = gpfswrap_stat_x(p,
+ &litemask,
+ &iattr,
+ sizeof(iattr));
+ } else {
+ ret = gpfswrap_fstat_x(fd,
+ &litemask,
+ &iattr,
+ sizeof(iattr));
+ }
+ if (ret == -1) {
+ saved_errno = errno;
+ }
+
+ drop_effective_capability(DAC_OVERRIDE_CAPABILITY);
+
+ if (saved_errno != 0) {
+ errno = saved_errno;
+ }
+ }
+
+ if (ret == -1) {
+ DBG_WARNING("Getting winattrs failed for %s: %s\n",
+ fsp->fsp_name->base_name, strerror(errno));
+ return map_nt_error_from_unix(errno);
+ }
+
+ ts = gpfs_timestruc64_to_timespec(iattr.ia_createtime);
+
+ *dosmode |= vfs_gpfs_winattrs_to_dosmode(iattr.ia_winflags);
+ update_stat_ex_create_time(&fsp->fsp_name->st, ts);
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS vfs_gpfs_fset_dos_attributes(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ uint32_t dosmode)
+{
+ struct gpfs_config_data *config;
+ struct gpfs_winattr attrs = { };
+ int ret;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct gpfs_config_data,
+ return NT_STATUS_INTERNAL_ERROR);
+
+ if (!config->winattr) {
+ return SMB_VFS_NEXT_FSET_DOS_ATTRIBUTES(handle, fsp, dosmode);
+ }
+
+ attrs.winAttrs = vfs_gpfs_dosmode_to_winattrs(dosmode);
+
+ if (!fsp->fsp_flags.is_pathref) {
+ ret = gpfswrap_set_winattrs(fsp_get_io_fd(fsp),
+ GPFS_WINATTR_SET_ATTRS, &attrs);
+ if (ret == -1) {
+ DBG_WARNING("Setting winattrs failed for %s: %s\n",
+ fsp_str_dbg(fsp), strerror(errno));
+ return map_nt_error_from_unix(errno);
+ }
+ return NT_STATUS_OK;
+ }
+
+ if (fsp->fsp_flags.have_proc_fds) {
+ int fd = fsp_get_pathref_fd(fsp);
+ struct sys_proc_fd_path_buf buf;
+
+ ret = gpfswrap_set_winattrs_path(sys_proc_fd_path(fd, &buf),
+ GPFS_WINATTR_SET_ATTRS,
+ &attrs);
+ if (ret == -1) {
+ DBG_WARNING("Setting winattrs failed for "
+ "[%s][%s]: %s\n",
+ buf.buf,
+ fsp_str_dbg(fsp),
+ strerror(errno));
+ return map_nt_error_from_unix(errno);
+ }
+ return NT_STATUS_OK;
+ }
+
+ /*
+ * This is no longer a handle based call.
+ */
+ ret = gpfswrap_set_winattrs_path(fsp->fsp_name->base_name,
+ GPFS_WINATTR_SET_ATTRS,
+ &attrs);
+ if (ret == -1) {
+ DBG_WARNING("Setting winattrs failed for [%s]: %s\n",
+ fsp_str_dbg(fsp), strerror(errno));
+ return map_nt_error_from_unix(errno);
+ }
+
+ return NT_STATUS_OK;
+}
+
+static int timespec_to_gpfs_time(
+ struct timespec ts, gpfs_timestruc_t *gt, int idx, int *flags)
+{
+ if (is_omit_timespec(&ts)) {
+ return 0;
+ }
+
+ if (ts.tv_sec < 0 || ts.tv_sec > UINT32_MAX) {
+ DBG_NOTICE("GPFS uses 32-bit unsigned timestamps "
+ "and cannot handle %jd.\n",
+ (intmax_t)ts.tv_sec);
+ errno = ERANGE;
+ return -1;
+ }
+
+ *flags |= 1 << idx;
+ gt[idx].tv_sec = ts.tv_sec;
+ gt[idx].tv_nsec = ts.tv_nsec;
+ DBG_DEBUG("Setting GPFS time %d, flags 0x%x\n", idx, *flags);
+
+ return 0;
+}
+
+static int smbd_gpfs_set_times(struct files_struct *fsp,
+ struct smb_file_time *ft)
+{
+ gpfs_timestruc_t gpfs_times[4];
+ int flags = 0;
+ int rc;
+
+ ZERO_ARRAY(gpfs_times);
+ rc = timespec_to_gpfs_time(ft->atime, gpfs_times, 0, &flags);
+ if (rc != 0) {
+ return rc;
+ }
+
+ rc = timespec_to_gpfs_time(ft->mtime, gpfs_times, 1, &flags);
+ if (rc != 0) {
+ return rc;
+ }
+
+ /* No good mapping from LastChangeTime to ctime, not storing */
+ rc = timespec_to_gpfs_time(ft->create_time, gpfs_times, 3, &flags);
+ if (rc != 0) {
+ return rc;
+ }
+
+ if (!flags) {
+ DBG_DEBUG("nothing to do, return to avoid EINVAL\n");
+ return 0;
+ }
+
+ if (!fsp->fsp_flags.is_pathref) {
+ rc = gpfswrap_set_times(fsp_get_io_fd(fsp), flags, gpfs_times);
+ if (rc != 0) {
+ DBG_WARNING("gpfs_set_times(%s) failed: %s\n",
+ fsp_str_dbg(fsp), strerror(errno));
+ }
+ return rc;
+ }
+
+
+ if (fsp->fsp_flags.have_proc_fds) {
+ int fd = fsp_get_pathref_fd(fsp);
+ struct sys_proc_fd_path_buf buf;
+
+ rc = gpfswrap_set_times_path(sys_proc_fd_path(fd, &buf),
+ flags,
+ gpfs_times);
+ if (rc != 0) {
+ DBG_WARNING("gpfs_set_times_path(%s,%s) failed: %s\n",
+ fsp_str_dbg(fsp),
+ buf.buf,
+ strerror(errno));
+ }
+ return rc;
+ }
+
+ /*
+ * This is no longer a handle based call.
+ */
+
+ rc = gpfswrap_set_times_path(fsp->fsp_name->base_name,
+ flags,
+ gpfs_times);
+ if (rc != 0) {
+ DBG_WARNING("gpfs_set_times_path(%s) failed: %s\n",
+ fsp_str_dbg(fsp), strerror(errno));
+ }
+ return rc;
+}
+
+static int vfs_gpfs_fntimes(struct vfs_handle_struct *handle,
+ files_struct *fsp,
+ struct smb_file_time *ft)
+{
+
+ struct gpfs_winattr attrs;
+ int ret;
+ struct gpfs_config_data *config;
+
+ SMB_VFS_HANDLE_GET_DATA(handle,
+ config,
+ struct gpfs_config_data,
+ return -1);
+
+ /* Try to use gpfs_set_times if it is enabled and available */
+ if (config->settimes) {
+ return smbd_gpfs_set_times(fsp, ft);
+ }
+
+ DBG_DEBUG("gpfs_set_times() not available or disabled, "
+ "use ntimes and winattr\n");
+
+ ret = SMB_VFS_NEXT_FNTIMES(handle, fsp, ft);
+ if (ret == -1) {
+ /* don't complain if access was denied */
+ if (errno != EPERM && errno != EACCES) {
+ DBG_WARNING("SMB_VFS_NEXT_FNTIMES failed: %s\n",
+ strerror(errno));
+ }
+ return -1;
+ }
+
+ if (is_omit_timespec(&ft->create_time)) {
+ DBG_DEBUG("Create Time is NULL\n");
+ return 0;
+ }
+
+ if (!config->winattr) {
+ return 0;
+ }
+
+ attrs.winAttrs = 0;
+ attrs.creationTime.tv_sec = ft->create_time.tv_sec;
+ attrs.creationTime.tv_nsec = ft->create_time.tv_nsec;
+
+ if (!fsp->fsp_flags.is_pathref) {
+ ret = gpfswrap_set_winattrs(fsp_get_io_fd(fsp),
+ GPFS_WINATTR_SET_CREATION_TIME,
+ &attrs);
+ if (ret == -1 && errno != ENOSYS) {
+ DBG_WARNING("Set GPFS ntimes failed %d\n", ret);
+ return -1;
+ }
+ return ret;
+ }
+
+ if (fsp->fsp_flags.have_proc_fds) {
+ int fd = fsp_get_pathref_fd(fsp);
+ struct sys_proc_fd_path_buf buf;
+
+ ret = gpfswrap_set_winattrs_path(
+ sys_proc_fd_path(fd, &buf),
+ GPFS_WINATTR_SET_CREATION_TIME,
+ &attrs);
+ if (ret == -1 && errno != ENOSYS) {
+ DBG_WARNING("Set GPFS ntimes failed %d\n", ret);
+ return -1;
+ }
+ return ret;
+ }
+
+ /*
+ * This is no longer a handle based call.
+ */
+ ret = gpfswrap_set_winattrs_path(fsp->fsp_name->base_name,
+ GPFS_WINATTR_SET_CREATION_TIME,
+ &attrs);
+ if (ret == -1 && errno != ENOSYS) {
+ DBG_WARNING("Set GPFS ntimes failed %d\n", ret);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int vfs_gpfs_fallocate(struct vfs_handle_struct *handle,
+ struct files_struct *fsp, uint32_t mode,
+ off_t offset, off_t len)
+{
+ if (mode == (VFS_FALLOCATE_FL_PUNCH_HOLE|VFS_FALLOCATE_FL_KEEP_SIZE) &&
+ !fsp->fsp_flags.is_sparse &&
+ lp_strict_allocate(SNUM(fsp->conn))) {
+ /*
+ * This is from a ZERO_DATA request on a non-sparse
+ * file. GPFS does not support FL_KEEP_SIZE and thus
+ * cannot fill the whole again in the subsequent
+ * fallocate(FL_KEEP_SIZE). Deny this FL_PUNCH_HOLE
+ * call to not end up with a hole in a non-sparse
+ * file.
+ */
+ errno = ENOTSUP;
+ return -1;
+ }
+
+ return SMB_VFS_NEXT_FALLOCATE(handle, fsp, mode, offset, len);
+}
+
+static int vfs_gpfs_ftruncate(vfs_handle_struct *handle, files_struct *fsp,
+ off_t len)
+{
+ int result;
+ struct gpfs_config_data *config;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct gpfs_config_data,
+ return -1);
+
+ if (!config->ftruncate) {
+ return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, len);
+ }
+
+ result = gpfswrap_ftruncate(fsp_get_io_fd(fsp), len);
+ if ((result == -1) && (errno == ENOSYS)) {
+ return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, len);
+ }
+ return result;
+}
+
+static bool vfs_gpfs_is_offline(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ SMB_STRUCT_STAT *sbuf)
+{
+ struct gpfs_winattr attrs;
+ struct gpfs_config_data *config;
+ int ret;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct gpfs_config_data,
+ return false);
+
+ if (!config->winattr) {
+ return false;
+ }
+
+ ret = gpfswrap_get_winattrs(fsp_get_pathref_fd(fsp), &attrs);
+ if (ret == -1) {
+ return false;
+ }
+
+ if ((attrs.winAttrs & GPFS_WINATTR_OFFLINE) != 0) {
+ DBG_DEBUG("%s is offline\n", fsp_str_dbg(fsp));
+ return true;
+ }
+
+ DBG_DEBUG("%s is online\n", fsp_str_dbg(fsp));
+ return false;
+}
+
+static bool vfs_gpfs_fsp_is_offline(struct vfs_handle_struct *handle,
+ struct files_struct *fsp)
+{
+ struct gpfs_fsp_extension *ext;
+
+ ext = VFS_FETCH_FSP_EXTENSION(handle, fsp);
+ if (ext == NULL) {
+ /*
+ * Something bad happened, always ask.
+ */
+ return vfs_gpfs_is_offline(handle, fsp,
+ &fsp->fsp_name->st);
+ }
+
+ if (ext->offline) {
+ /*
+ * As long as it's offline, ask.
+ */
+ ext->offline = vfs_gpfs_is_offline(handle, fsp,
+ &fsp->fsp_name->st);
+ }
+
+ return ext->offline;
+}
+
+static bool vfs_gpfs_aio_force(struct vfs_handle_struct *handle,
+ struct files_struct *fsp)
+{
+ return vfs_gpfs_fsp_is_offline(handle, fsp);
+}
+
+static ssize_t vfs_gpfs_sendfile(vfs_handle_struct *handle, int tofd,
+ files_struct *fsp, const DATA_BLOB *hdr,
+ off_t offset, size_t n)
+{
+ if (vfs_gpfs_fsp_is_offline(handle, fsp)) {
+ errno = ENOSYS;
+ return -1;
+ }
+ return SMB_VFS_NEXT_SENDFILE(handle, tofd, fsp, hdr, offset, n);
+}
+
+#ifdef O_PATH
+static int vfs_gpfs_check_pathref_fstat_x(struct gpfs_config_data *config,
+ struct connection_struct *conn)
+{
+ struct gpfs_iattr64 iattr = {0};
+ unsigned int litemask = 0;
+ int saved_errno;
+ int fd;
+ int ret;
+
+ fd = open(conn->connectpath, O_PATH);
+ if (fd == -1) {
+ DBG_ERR("openat() of share with O_PATH failed: %s\n",
+ strerror(errno));
+ return -1;
+ }
+
+ ret = gpfswrap_fstat_x(fd, &litemask, &iattr, sizeof(iattr));
+ if (ret == 0) {
+ close(fd);
+ config->pathref_ok.gpfs_fstat_x = true;
+ return 0;
+ }
+
+ saved_errno = errno;
+ ret = close(fd);
+ if (ret != 0) {
+ DBG_ERR("close failed: %s\n", strerror(errno));
+ return -1;
+ }
+
+ if (saved_errno != EBADF) {
+ DBG_ERR("gpfswrap_fstat_x() of O_PATH handle failed: %s\n",
+ strerror(saved_errno));
+ return -1;
+ }
+
+ return 0;
+}
+#endif
+
+static int vfs_gpfs_check_pathref(struct gpfs_config_data *config,
+ struct connection_struct *conn)
+{
+#ifndef O_PATH
+ /*
+ * This code path leaves all struct gpfs_config_data.pathref_ok members
+ * initialized to false.
+ */
+ return 0;
+#else
+ int ret;
+
+ ret = vfs_gpfs_check_pathref_fstat_x(config, conn);
+ if (ret != 0) {
+ return -1;
+ }
+
+ return 0;
+#endif
+}
+
+static int vfs_gpfs_connect(struct vfs_handle_struct *handle,
+ const char *service, const char *user)
+{
+ struct gpfs_config_data *config;
+ int ret;
+ bool check_fstype;
+
+ ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
+ if (ret < 0) {
+ return ret;
+ }
+
+ if (IS_IPC(handle->conn)) {
+ return 0;
+ }
+
+ ret = gpfswrap_init();
+ if (ret < 0) {
+ DBG_ERR("Could not load GPFS library.\n");
+ return ret;
+ }
+
+ ret = gpfswrap_lib_init(0);
+ if (ret < 0) {
+ DBG_ERR("Could not open GPFS device file: %s\n",
+ strerror(errno));
+ return ret;
+ }
+
+ ret = gpfswrap_register_cifs_export();
+ if (ret < 0) {
+ DBG_ERR("Failed to register with GPFS: %s\n", strerror(errno));
+ return ret;
+ }
+
+ config = talloc_zero(handle->conn, struct gpfs_config_data);
+ if (!config) {
+ DEBUG(0, ("talloc_zero() failed\n"));
+ errno = ENOMEM;
+ return -1;
+ }
+
+ check_fstype = lp_parm_bool(SNUM(handle->conn), "gpfs",
+ "check_fstype", true);
+
+ if (check_fstype) {
+ const char *connectpath = handle->conn->connectpath;
+ struct statfs buf = { 0 };
+
+ ret = statfs(connectpath, &buf);
+ if (ret != 0) {
+ DBG_ERR("statfs failed for share %s at path %s: %s\n",
+ service, connectpath, strerror(errno));
+ TALLOC_FREE(config);
+ return ret;
+ }
+
+ if (buf.f_type != GPFS_SUPER_MAGIC) {
+ DBG_ERR("SMB share %s, path %s not in GPFS file system."
+ " statfs magic: 0x%jx\n",
+ service,
+ connectpath,
+ (uintmax_t)buf.f_type);
+ errno = EINVAL;
+ TALLOC_FREE(config);
+ return -1;
+ }
+ }
+
+ ret = smbacl4_get_vfs_params(handle->conn, &config->nfs4_params);
+ if (ret < 0) {
+ TALLOC_FREE(config);
+ return ret;
+ }
+
+ config->sharemodes = lp_parm_bool(SNUM(handle->conn), "gpfs",
+ "sharemodes", true);
+
+ config->leases = lp_parm_bool(SNUM(handle->conn), "gpfs",
+ "leases", true);
+
+ config->hsm = lp_parm_bool(SNUM(handle->conn), "gpfs",
+ "hsm", false);
+
+ config->syncio = lp_parm_bool(SNUM(handle->conn), "gpfs",
+ "syncio", false);
+
+ config->winattr = lp_parm_bool(SNUM(handle->conn), "gpfs",
+ "winattr", false);
+
+ config->ftruncate = lp_parm_bool(SNUM(handle->conn), "gpfs",
+ "ftruncate", true);
+
+ config->getrealfilename = lp_parm_bool(SNUM(handle->conn), "gpfs",
+ "getrealfilename", true);
+
+ config->dfreequota = lp_parm_bool(SNUM(handle->conn), "gpfs",
+ "dfreequota", false);
+
+ config->acl = lp_parm_bool(SNUM(handle->conn), "gpfs", "acl", true);
+
+ config->settimes = lp_parm_bool(SNUM(handle->conn), "gpfs",
+ "settimes", true);
+ config->recalls = lp_parm_bool(SNUM(handle->conn), "gpfs",
+ "recalls", true);
+
+ ret = vfs_gpfs_check_pathref(config, handle->conn);
+ if (ret != 0) {
+ DBG_ERR("vfs_gpfs_check_pathref() on [%s] failed\n",
+ handle->conn->connectpath);
+ TALLOC_FREE(config);
+ return -1;
+ }
+
+ SMB_VFS_HANDLE_SET_DATA(handle, config,
+ NULL, struct gpfs_config_data,
+ return -1);
+
+ if (config->leases) {
+ /*
+ * GPFS lease code is based on kernel oplock code
+ * so make sure it is turned on
+ */
+ if (!lp_kernel_oplocks(SNUM(handle->conn))) {
+ DEBUG(5, ("Enabling kernel oplocks for "
+ "gpfs:leases to work\n"));
+ lp_do_parameter(SNUM(handle->conn), "kernel oplocks",
+ "true");
+ }
+
+ /*
+ * as the kernel does not properly support Level II oplocks
+ * and GPFS leases code is based on kernel infrastructure, we
+ * need to turn off Level II oplocks if gpfs:leases is enabled
+ */
+ if (lp_level2_oplocks(SNUM(handle->conn))) {
+ DEBUG(5, ("gpfs:leases are enabled, disabling "
+ "Level II oplocks\n"));
+ lp_do_parameter(SNUM(handle->conn), "level2 oplocks",
+ "false");
+ }
+ }
+
+ /*
+ * Unless we have an async implementation of get_dos_attributes turn
+ * this off.
+ */
+ lp_do_parameter(SNUM(handle->conn), "smbd async dosmode", "false");
+
+ return 0;
+}
+
+static int get_gpfs_quota(const char *pathname, int type, int id,
+ struct gpfs_quotaInfo *qi)
+{
+ int ret;
+
+ ret = gpfswrap_quotactl(pathname, GPFS_QCMD(Q_GETQUOTA, type), id, qi);
+
+ if (ret) {
+ if (errno == GPFS_E_NO_QUOTA_INST) {
+ DEBUG(10, ("Quotas disabled on GPFS filesystem.\n"));
+ } else if (errno != ENOSYS) {
+ DEBUG(0, ("Get quota failed, type %d, id, %d, "
+ "errno %d.\n", type, id, errno));
+ }
+
+ return ret;
+ }
+
+ DEBUG(10, ("quota type %d, id %d, blk u:%lld h:%lld s:%lld gt:%u\n",
+ type, id, qi->blockUsage, qi->blockHardLimit,
+ qi->blockSoftLimit, qi->blockGraceTime));
+
+ return ret;
+}
+
+static void vfs_gpfs_disk_free_quota(struct gpfs_quotaInfo qi, time_t cur_time,
+ uint64_t *dfree, uint64_t *dsize)
+{
+ uint64_t usage, limit;
+
+ /*
+ * The quota reporting is done in units of 1024 byte blocks, but
+ * sys_fsusage uses units of 512 byte blocks, adjust the block number
+ * accordingly. Also filter possibly negative usage counts from gpfs.
+ */
+ usage = qi.blockUsage < 0 ? 0 : (uint64_t)qi.blockUsage * 2;
+ limit = (uint64_t)qi.blockHardLimit * 2;
+
+ /*
+ * When the grace time for the exceeded soft block quota has been
+ * exceeded, the soft block quota becomes an additional hard limit.
+ */
+ if (qi.blockSoftLimit &&
+ qi.blockGraceTime && cur_time > qi.blockGraceTime) {
+ /* report disk as full */
+ *dfree = 0;
+ *dsize = MIN(*dsize, usage);
+ }
+
+ if (!qi.blockHardLimit)
+ return;
+
+ if (usage >= limit) {
+ /* report disk as full */
+ *dfree = 0;
+ *dsize = MIN(*dsize, usage);
+
+ } else {
+ /* limit has not been reached, determine "free space" */
+ *dfree = MIN(*dfree, limit - usage);
+ *dsize = MIN(*dsize, limit);
+ }
+}
+
+static uint64_t vfs_gpfs_disk_free(vfs_handle_struct *handle,
+ const struct smb_filename *smb_fname,
+ uint64_t *bsize,
+ uint64_t *dfree,
+ uint64_t *dsize)
+{
+ struct security_unix_token *utok;
+ struct gpfs_quotaInfo qi_user = { 0 }, qi_group = { 0 };
+ struct gpfs_config_data *config;
+ int err;
+ time_t cur_time;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data,
+ return (uint64_t)-1);
+ if (!config->dfreequota) {
+ return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
+ bsize, dfree, dsize);
+ }
+
+ err = sys_fsusage(smb_fname->base_name, dfree, dsize);
+ if (err) {
+ DEBUG (0, ("Could not get fs usage, errno %d\n", errno));
+ return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
+ bsize, dfree, dsize);
+ }
+
+ /* sys_fsusage returns units of 512 bytes */
+ *bsize = 512;
+
+ DEBUG(10, ("fs dfree %llu, dsize %llu\n",
+ (unsigned long long)*dfree, (unsigned long long)*dsize));
+
+ utok = handle->conn->session_info->unix_token;
+
+ err = get_gpfs_quota(smb_fname->base_name,
+ GPFS_USRQUOTA, utok->uid, &qi_user);
+ if (err) {
+ return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
+ bsize, dfree, dsize);
+ }
+
+ /*
+ * If new files created under this folder get this folder's
+ * GID, then available space is governed by the quota of the
+ * folder's GID, not the primary group of the creating user.
+ */
+ if (VALID_STAT(smb_fname->st) &&
+ S_ISDIR(smb_fname->st.st_ex_mode) &&
+ smb_fname->st.st_ex_mode & S_ISGID) {
+ become_root();
+ err = get_gpfs_quota(smb_fname->base_name, GPFS_GRPQUOTA,
+ smb_fname->st.st_ex_gid, &qi_group);
+ unbecome_root();
+
+ } else {
+ err = get_gpfs_quota(smb_fname->base_name, GPFS_GRPQUOTA,
+ utok->gid, &qi_group);
+ }
+
+ if (err) {
+ return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
+ bsize, dfree, dsize);
+ }
+
+ cur_time = time(NULL);
+
+ /* Adjust free space and size according to quota limits. */
+ vfs_gpfs_disk_free_quota(qi_user, cur_time, dfree, dsize);
+ vfs_gpfs_disk_free_quota(qi_group, cur_time, dfree, dsize);
+
+ return *dfree / 2;
+}
+
+static int vfs_gpfs_get_quota(vfs_handle_struct *handle,
+ const struct smb_filename *smb_fname,
+ enum SMB_QUOTA_TYPE qtype,
+ unid_t id,
+ SMB_DISK_QUOTA *dq)
+{
+ switch(qtype) {
+ /*
+ * User/group quota are being used for disk-free
+ * determination, which in this module is done directly
+ * by the disk-free function. It's important that this
+ * module does not return wrong quota values by mistake,
+ * which would modify the correct values set by disk-free.
+ * User/group quota are also being used for processing
+ * NT_TRANSACT_GET_USER_QUOTA in smb1 protocol, which is
+ * currently not supported by this module.
+ */
+ case SMB_USER_QUOTA_TYPE:
+ case SMB_GROUP_QUOTA_TYPE:
+ errno = ENOSYS;
+ return -1;
+ default:
+ return SMB_VFS_NEXT_GET_QUOTA(handle, smb_fname,
+ qtype, id, dq);
+ }
+}
+
+static uint32_t vfs_gpfs_capabilities(struct vfs_handle_struct *handle,
+ enum timestamp_set_resolution *p_ts_res)
+{
+ struct gpfs_config_data *config;
+ uint32_t next;
+
+ next = SMB_VFS_NEXT_FS_CAPABILITIES(handle, p_ts_res);
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct gpfs_config_data,
+ return next);
+
+ if (config->hsm) {
+ next |= FILE_SUPPORTS_REMOTE_STORAGE;
+ }
+ return next;
+}
+
+static int vfs_gpfs_openat(struct vfs_handle_struct *handle,
+ const struct files_struct *dirfsp,
+ const struct smb_filename *smb_fname,
+ files_struct *fsp,
+ const struct vfs_open_how *_how)
+{
+ struct vfs_open_how how = *_how;
+ struct gpfs_config_data *config = NULL;
+ struct gpfs_fsp_extension *ext = NULL;
+ int ret;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct gpfs_config_data,
+ return -1);
+
+ if (config->hsm && !config->recalls &&
+ !fsp->fsp_flags.is_pathref &&
+ vfs_gpfs_fsp_is_offline(handle, fsp))
+ {
+ DBG_DEBUG("Refusing access to offline file %s\n",
+ fsp_str_dbg(fsp));
+ errno = EACCES;
+ return -1;
+ }
+
+ if (config->syncio) {
+ how.flags |= O_SYNC;
+ }
+
+ ext = VFS_ADD_FSP_EXTENSION(handle, fsp, struct gpfs_fsp_extension,
+ NULL);
+ if (ext == NULL) {
+ errno = ENOMEM;
+ return -1;
+ }
+
+ /*
+ * Assume the file is offline until gpfs tells us it's online.
+ */
+ *ext = (struct gpfs_fsp_extension) { .offline = true };
+
+ ret = SMB_VFS_NEXT_OPENAT(handle, dirfsp, smb_fname, fsp, &how);
+ if (ret == -1) {
+ VFS_REMOVE_FSP_EXTENSION(handle, fsp);
+ }
+ return ret;
+}
+
+static ssize_t vfs_gpfs_pread(vfs_handle_struct *handle, files_struct *fsp,
+ void *data, size_t n, off_t offset)
+{
+ ssize_t ret;
+ bool was_offline;
+
+ was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
+
+ ret = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
+
+ if ((ret != -1) && was_offline) {
+ notify_fname(handle->conn, NOTIFY_ACTION_MODIFIED,
+ FILE_NOTIFY_CHANGE_ATTRIBUTES,
+ fsp->fsp_name->base_name);
+ }
+
+ return ret;
+}
+
+struct vfs_gpfs_pread_state {
+ struct files_struct *fsp;
+ ssize_t ret;
+ bool was_offline;
+ struct vfs_aio_state vfs_aio_state;
+};
+
+static void vfs_gpfs_pread_done(struct tevent_req *subreq);
+
+static struct tevent_req *vfs_gpfs_pread_send(struct vfs_handle_struct *handle,
+ TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct files_struct *fsp,
+ void *data, size_t n,
+ off_t offset)
+{
+ struct tevent_req *req, *subreq;
+ struct vfs_gpfs_pread_state *state;
+
+ req = tevent_req_create(mem_ctx, &state, struct vfs_gpfs_pread_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ state->was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
+ state->fsp = fsp;
+ subreq = SMB_VFS_NEXT_PREAD_SEND(state, ev, handle, fsp, data,
+ n, offset);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, vfs_gpfs_pread_done, req);
+ return req;
+}
+
+static void vfs_gpfs_pread_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct vfs_gpfs_pread_state *state = tevent_req_data(
+ req, struct vfs_gpfs_pread_state);
+
+ state->ret = SMB_VFS_PREAD_RECV(subreq, &state->vfs_aio_state);
+ TALLOC_FREE(subreq);
+ tevent_req_done(req);
+}
+
+static ssize_t vfs_gpfs_pread_recv(struct tevent_req *req,
+ struct vfs_aio_state *vfs_aio_state)
+{
+ struct vfs_gpfs_pread_state *state = tevent_req_data(
+ req, struct vfs_gpfs_pread_state);
+ struct files_struct *fsp = state->fsp;
+
+ if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
+ return -1;
+ }
+ *vfs_aio_state = state->vfs_aio_state;
+
+ if ((state->ret != -1) && state->was_offline) {
+ DEBUG(10, ("sending notify\n"));
+ notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
+ FILE_NOTIFY_CHANGE_ATTRIBUTES,
+ fsp->fsp_name->base_name);
+ }
+
+ return state->ret;
+}
+
+static ssize_t vfs_gpfs_pwrite(vfs_handle_struct *handle, files_struct *fsp,
+ const void *data, size_t n, off_t offset)
+{
+ ssize_t ret;
+ bool was_offline;
+
+ was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
+
+ ret = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
+
+ if ((ret != -1) && was_offline) {
+ notify_fname(handle->conn, NOTIFY_ACTION_MODIFIED,
+ FILE_NOTIFY_CHANGE_ATTRIBUTES,
+ fsp->fsp_name->base_name);
+ }
+
+ return ret;
+}
+
+struct vfs_gpfs_pwrite_state {
+ struct files_struct *fsp;
+ ssize_t ret;
+ bool was_offline;
+ struct vfs_aio_state vfs_aio_state;
+};
+
+static void vfs_gpfs_pwrite_done(struct tevent_req *subreq);
+
+static struct tevent_req *vfs_gpfs_pwrite_send(
+ struct vfs_handle_struct *handle,
+ TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct files_struct *fsp,
+ const void *data, size_t n,
+ off_t offset)
+{
+ struct tevent_req *req, *subreq;
+ struct vfs_gpfs_pwrite_state *state;
+
+ req = tevent_req_create(mem_ctx, &state, struct vfs_gpfs_pwrite_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ state->was_offline = vfs_gpfs_fsp_is_offline(handle, fsp);
+ state->fsp = fsp;
+ subreq = SMB_VFS_NEXT_PWRITE_SEND(state, ev, handle, fsp, data,
+ n, offset);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, vfs_gpfs_pwrite_done, req);
+ return req;
+}
+
+static void vfs_gpfs_pwrite_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct vfs_gpfs_pwrite_state *state = tevent_req_data(
+ req, struct vfs_gpfs_pwrite_state);
+
+ state->ret = SMB_VFS_PWRITE_RECV(subreq, &state->vfs_aio_state);
+ TALLOC_FREE(subreq);
+ tevent_req_done(req);
+}
+
+static ssize_t vfs_gpfs_pwrite_recv(struct tevent_req *req,
+ struct vfs_aio_state *vfs_aio_state)
+{
+ struct vfs_gpfs_pwrite_state *state = tevent_req_data(
+ req, struct vfs_gpfs_pwrite_state);
+ struct files_struct *fsp = state->fsp;
+
+ if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
+ return -1;
+ }
+ *vfs_aio_state = state->vfs_aio_state;
+
+ if ((state->ret != -1) && state->was_offline) {
+ DEBUG(10, ("sending notify\n"));
+ notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
+ FILE_NOTIFY_CHANGE_ATTRIBUTES,
+ fsp->fsp_name->base_name);
+ }
+
+ return state->ret;
+}
+
+
+static struct vfs_fn_pointers vfs_gpfs_fns = {
+ .connect_fn = vfs_gpfs_connect,
+ .disk_free_fn = vfs_gpfs_disk_free,
+ .get_quota_fn = vfs_gpfs_get_quota,
+ .fs_capabilities_fn = vfs_gpfs_capabilities,
+ .filesystem_sharemode_fn = vfs_gpfs_filesystem_sharemode,
+ .linux_setlease_fn = vfs_gpfs_setlease,
+ .get_real_filename_at_fn = vfs_gpfs_get_real_filename_at,
+ .get_dos_attributes_send_fn = vfs_not_implemented_get_dos_attributes_send,
+ .get_dos_attributes_recv_fn = vfs_not_implemented_get_dos_attributes_recv,
+ .fget_dos_attributes_fn = vfs_gpfs_fget_dos_attributes,
+ .fset_dos_attributes_fn = vfs_gpfs_fset_dos_attributes,
+ .fget_nt_acl_fn = gpfsacl_fget_nt_acl,
+ .fset_nt_acl_fn = gpfsacl_fset_nt_acl,
+ .sys_acl_get_fd_fn = gpfsacl_sys_acl_get_fd,
+ .sys_acl_blob_get_fd_fn = gpfsacl_sys_acl_blob_get_fd,
+ .sys_acl_set_fd_fn = gpfsacl_sys_acl_set_fd,
+ .sys_acl_delete_def_fd_fn = gpfsacl_sys_acl_delete_def_fd,
+ .fchmod_fn = vfs_gpfs_fchmod,
+ .close_fn = vfs_gpfs_close,
+ .stat_fn = nfs4_acl_stat,
+ .fstat_fn = nfs4_acl_fstat,
+ .lstat_fn = nfs4_acl_lstat,
+ .fstatat_fn = nfs4_acl_fstatat,
+ .fntimes_fn = vfs_gpfs_fntimes,
+ .aio_force_fn = vfs_gpfs_aio_force,
+ .sendfile_fn = vfs_gpfs_sendfile,
+ .fallocate_fn = vfs_gpfs_fallocate,
+ .openat_fn = vfs_gpfs_openat,
+ .pread_fn = vfs_gpfs_pread,
+ .pread_send_fn = vfs_gpfs_pread_send,
+ .pread_recv_fn = vfs_gpfs_pread_recv,
+ .pwrite_fn = vfs_gpfs_pwrite,
+ .pwrite_send_fn = vfs_gpfs_pwrite_send,
+ .pwrite_recv_fn = vfs_gpfs_pwrite_recv,
+ .ftruncate_fn = vfs_gpfs_ftruncate
+};
+
+static_decl_vfs;
+NTSTATUS vfs_gpfs_init(TALLOC_CTX *ctx)
+{
+ return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "gpfs",
+ &vfs_gpfs_fns);
+}