2 Unix SMB/Netbios implementation.
4 VFS initialisation and support functions
5 Copyright (C) Tim Potter 1999
6 Copyright (C) Alexander Bokovoy 2002
7 Copyright (C) James Peach 2006
8 Copyright (C) Volker Lendecke 2009
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 This work was sponsored by Optifacio Software Services, Inc.
27 #include "system/filesys.h"
28 #include "smbd/smbd.h"
29 #include "smbd/globals.h"
30 #include "../lib/util/memcache.h"
31 #include "transfer_file.h"
33 #include "lib/util/tevent_unix.h"
36 #define DBGC_CLASS DBGC_VFS
41 struct vfs_fsp_data *next;
42 struct vfs_handle_struct *owner;
43 void (*destroy)(void *p_data);
45 /* NOTE: This structure contains four pointers so that we can guarantee
46 * that the end of the structure is always both 4-byte and 8-byte aligned.
50 struct vfs_init_function_entry {
52 struct vfs_init_function_entry *prev, *next;
53 const struct vfs_fn_pointers *fns;
56 /****************************************************************************
57 maintain the list of available backends
58 ****************************************************************************/
60 static struct vfs_init_function_entry *vfs_find_backend_entry(const char *name)
62 struct vfs_init_function_entry *entry = backends;
64 DEBUG(10, ("vfs_find_backend_entry called for %s\n", name));
67 if (strcmp(entry->name, name)==0) return entry;
74 NTSTATUS smb_register_vfs(int version, const char *name,
75 const struct vfs_fn_pointers *fns)
77 struct vfs_init_function_entry *entry = backends;
79 if ((version != SMB_VFS_INTERFACE_VERSION)) {
80 DEBUG(0, ("Failed to register vfs module.\n"
81 "The module was compiled against SMB_VFS_INTERFACE_VERSION %d,\n"
82 "current SMB_VFS_INTERFACE_VERSION is %d.\n"
83 "Please recompile against the current Samba Version!\n",
84 version, SMB_VFS_INTERFACE_VERSION));
85 return NT_STATUS_OBJECT_TYPE_MISMATCH;
88 if (!name || !name[0]) {
89 DEBUG(0,("smb_register_vfs() called with NULL pointer or empty name!\n"));
90 return NT_STATUS_INVALID_PARAMETER;
93 if (vfs_find_backend_entry(name)) {
94 DEBUG(0,("VFS module %s already loaded!\n", name));
95 return NT_STATUS_OBJECT_NAME_COLLISION;
98 entry = SMB_XMALLOC_P(struct vfs_init_function_entry);
99 entry->name = smb_xstrdup(name);
102 DLIST_ADD(backends, entry);
103 DEBUG(5, ("Successfully added vfs backend '%s'\n", name));
107 /****************************************************************************
108 initialise default vfs hooks
109 ****************************************************************************/
111 static void vfs_init_default(connection_struct *conn)
113 DEBUG(3, ("Initialising default vfs hooks\n"));
114 vfs_init_custom(conn, DEFAULT_VFS_MODULE_NAME);
117 /****************************************************************************
118 initialise custom vfs hooks
119 ****************************************************************************/
121 bool vfs_init_custom(connection_struct *conn, const char *vfs_object)
123 char *module_path = NULL;
124 char *module_name = NULL;
125 char *module_param = NULL, *p;
126 vfs_handle_struct *handle;
127 const struct vfs_init_function_entry *entry;
129 if (!conn||!vfs_object||!vfs_object[0]) {
130 DEBUG(0, ("vfs_init_custom() called with NULL pointer or "
131 "empty vfs_object!\n"));
139 DEBUG(3, ("Initialising custom vfs hooks from [%s]\n", vfs_object));
141 module_path = smb_xstrdup(vfs_object);
143 p = strchr_m(module_path, ':');
148 trim_char(module_param, ' ', ' ');
151 trim_char(module_path, ' ', ' ');
153 module_name = smb_xstrdup(module_path);
155 if ((module_name[0] == '/') &&
156 (strcmp(module_path, DEFAULT_VFS_MODULE_NAME) != 0)) {
159 * Extract the module name from the path. Just use the base
160 * name of the last path component.
163 SAFE_FREE(module_name);
164 module_name = smb_xstrdup(strrchr_m(module_path, '/')+1);
166 p = strchr_m(module_name, '.');
173 /* First, try to load the module with the new module system */
174 entry = vfs_find_backend_entry(module_name);
178 DEBUG(5, ("vfs module [%s] not loaded - trying to load...\n",
181 status = smb_load_module("vfs", module_path);
182 if (!NT_STATUS_IS_OK(status)) {
183 DEBUG(0, ("error probing vfs module '%s': %s\n",
184 module_path, nt_errstr(status)));
188 entry = vfs_find_backend_entry(module_name);
190 DEBUG(0,("Can't find a vfs module [%s]\n",vfs_object));
195 DEBUGADD(5,("Successfully loaded vfs module [%s] with the new modules system\n", vfs_object));
197 handle = talloc_zero(conn, vfs_handle_struct);
199 DEBUG(0,("TALLOC_ZERO() failed!\n"));
203 handle->fns = entry->fns;
205 handle->param = talloc_strdup(conn, module_param);
207 DLIST_ADD(conn->vfs_handles, handle);
209 SAFE_FREE(module_path);
210 SAFE_FREE(module_name);
214 SAFE_FREE(module_path);
215 SAFE_FREE(module_name);
219 /*****************************************************************
220 Allow VFS modules to extend files_struct with VFS-specific state.
221 This will be ok for small numbers of extensions, but might need to
222 be refactored if it becomes more widely used.
223 ******************************************************************/
225 #define EXT_DATA_AREA(e) ((uint8_t *)(e) + sizeof(struct vfs_fsp_data))
227 void *vfs_add_fsp_extension_notype(vfs_handle_struct *handle,
228 files_struct *fsp, size_t ext_size,
229 void (*destroy_fn)(void *p_data))
231 struct vfs_fsp_data *ext;
234 /* Prevent VFS modules adding multiple extensions. */
235 if ((ext_data = vfs_fetch_fsp_extension(handle, fsp))) {
239 ext = (struct vfs_fsp_data *)TALLOC_ZERO(
240 handle->conn, sizeof(struct vfs_fsp_data) + ext_size);
246 ext->next = fsp->vfs_extension;
247 ext->destroy = destroy_fn;
248 fsp->vfs_extension = ext;
249 return EXT_DATA_AREA(ext);
252 void vfs_remove_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
254 struct vfs_fsp_data *curr;
255 struct vfs_fsp_data *prev;
257 for (curr = fsp->vfs_extension, prev = NULL;
259 prev = curr, curr = curr->next) {
260 if (curr->owner == handle) {
262 prev->next = curr->next;
264 fsp->vfs_extension = curr->next;
267 curr->destroy(EXT_DATA_AREA(curr));
275 void vfs_remove_all_fsp_extensions(files_struct *fsp)
277 struct vfs_fsp_data *curr;
278 struct vfs_fsp_data *next;
280 for (curr = fsp->vfs_extension; curr; curr = next) {
283 fsp->vfs_extension = next;
286 curr->destroy(EXT_DATA_AREA(curr));
292 void *vfs_memctx_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
294 struct vfs_fsp_data *head;
296 for (head = fsp->vfs_extension; head; head = head->next) {
297 if (head->owner == handle) {
305 void *vfs_fetch_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
307 struct vfs_fsp_data *head;
309 head = (struct vfs_fsp_data *)vfs_memctx_fsp_extension(handle, fsp);
311 return EXT_DATA_AREA(head);
319 /*****************************************************************
321 ******************************************************************/
323 bool smbd_vfs_init(connection_struct *conn)
325 const char **vfs_objects;
329 /* Normal share - initialise with disk access functions */
330 vfs_init_default(conn);
332 /* No need to load vfs modules for printer connections */
337 vfs_objects = lp_vfs_objects(SNUM(conn));
339 /* Override VFS functions if 'vfs object' was not specified*/
340 if (!vfs_objects || !vfs_objects[0])
343 for (i=0; vfs_objects[i] ;) {
347 for (j=i-1; j >= 0; j--) {
348 if (!vfs_init_custom(conn, vfs_objects[j])) {
349 DEBUG(0, ("smbd_vfs_init: vfs_init_custom failed for %s\n", vfs_objects[j]));
356 /*******************************************************************
357 Check if a file exists in the vfs.
358 ********************************************************************/
360 NTSTATUS vfs_file_exist(connection_struct *conn, struct smb_filename *smb_fname)
362 /* Only return OK if stat was successful and S_ISREG */
363 if ((SMB_VFS_STAT(conn, smb_fname) != -1) &&
364 S_ISREG(smb_fname->st.st_ex_mode)) {
368 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
371 /****************************************************************************
372 Read data from fsp on the vfs. (note: EINTR re-read differs from vfs_write_data)
373 ****************************************************************************/
375 ssize_t vfs_read_data(files_struct *fsp, char *buf, size_t byte_count)
379 while (total < byte_count)
381 ssize_t ret = SMB_VFS_READ(fsp, buf + total,
384 if (ret == 0) return total;
393 return (ssize_t)total;
396 /****************************************************************************
397 Write data to a fd on the vfs.
398 ****************************************************************************/
400 ssize_t vfs_write_data(struct smb_request *req,
408 if (req && req->unread_bytes) {
409 int sockfd = req->xconn->transport.sock;
411 SMB_ASSERT(req->unread_bytes == N);
412 /* VFS_RECVFILE must drain the socket
413 * before returning. */
414 req->unread_bytes = 0;
415 /* Ensure the socket is blocking. */
416 old_flags = fcntl(sockfd, F_GETFL, 0);
417 if (set_blocking(sockfd, true) == -1) {
420 ret = SMB_VFS_RECVFILE(sockfd,
424 if (fcntl(sockfd, F_SETFL, old_flags) == -1) {
431 ret = SMB_VFS_WRITE(fsp, buffer + total, N - total);
440 return (ssize_t)total;
443 ssize_t vfs_pwrite_data(struct smb_request *req,
452 if (req && req->unread_bytes) {
453 int sockfd = req->xconn->transport.sock;
454 SMB_ASSERT(req->unread_bytes == N);
455 /* VFS_RECVFILE must drain the socket
456 * before returning. */
457 req->unread_bytes = 0;
459 * Leave the socket non-blocking and
460 * use SMB_VFS_RECVFILE. If it returns
461 * EAGAIN || EWOULDBLOCK temporarily set
462 * the socket blocking and retry
466 ret = SMB_VFS_RECVFILE(sockfd,
470 if (ret == 0 || (ret == -1 &&
472 errno == EWOULDBLOCK))) {
474 /* Ensure the socket is blocking. */
475 old_flags = fcntl(sockfd, F_GETFL, 0);
476 if (set_blocking(sockfd, true) == -1) {
479 ret = SMB_VFS_RECVFILE(sockfd,
483 if (fcntl(sockfd, F_SETFL, old_flags) == -1) {
490 return (ssize_t)total;
492 /* Any other error case. */
498 return (ssize_t)total;
502 ret = SMB_VFS_PWRITE(fsp, buffer + total, N - total,
512 return (ssize_t)total;
514 /****************************************************************************
515 An allocate file space call using the vfs interface.
516 Allocates space for a file from a filedescriptor.
517 Returns 0 on success, -1 on failure.
518 ****************************************************************************/
520 int vfs_allocate_file_space(files_struct *fsp, uint64_t len)
523 connection_struct *conn = fsp->conn;
524 uint64_t space_avail;
525 uint64_t bsize,dfree,dsize;
529 * Actually try and commit the space on disk....
532 DEBUG(10,("vfs_allocate_file_space: file %s, len %.0f\n",
533 fsp_str_dbg(fsp), (double)len));
535 if (((off_t)len) < 0) {
536 DEBUG(0,("vfs_allocate_file_space: %s negative len "
537 "requested.\n", fsp_str_dbg(fsp)));
542 status = vfs_stat_fsp(fsp);
543 if (!NT_STATUS_IS_OK(status)) {
547 if (len == (uint64_t)fsp->fsp_name->st.st_ex_size)
550 if (len < (uint64_t)fsp->fsp_name->st.st_ex_size) {
551 /* Shrink - use ftruncate. */
553 DEBUG(10,("vfs_allocate_file_space: file %s, shrink. Current "
554 "size %.0f\n", fsp_str_dbg(fsp),
555 (double)fsp->fsp_name->st.st_ex_size));
557 contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_ALLOC_SHRINK);
559 flush_write_cache(fsp, SAMBA_SIZECHANGE_FLUSH);
560 if ((ret = SMB_VFS_FTRUNCATE(fsp, (off_t)len)) != -1) {
561 set_filelen_write_cache(fsp, len);
564 contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_ALLOC_SHRINK);
569 /* Grow - we need to test if we have enough space. */
571 contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_ALLOC_GROW);
573 if (lp_strict_allocate(SNUM(fsp->conn))) {
574 /* See if we have a syscall that will allocate beyond
575 end-of-file without changing EOF. */
576 ret = SMB_VFS_FALLOCATE(fsp, VFS_FALLOCATE_FL_KEEP_SIZE,
582 contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_ALLOC_GROW);
585 /* We changed the allocation size on disk, but not
586 EOF - exactly as required. We're done ! */
590 if (ret == -1 && errno == ENOSPC) {
594 len -= fsp->fsp_name->st.st_ex_size;
595 len /= 1024; /* Len is now number of 1k blocks needed. */
596 space_avail = get_dfree_info(conn, fsp->fsp_name->base_name,
597 &bsize, &dfree, &dsize);
598 if (space_avail == (uint64_t)-1) {
602 DEBUG(10,("vfs_allocate_file_space: file %s, grow. Current size %.0f, "
603 "needed blocks = %.0f, space avail = %.0f\n",
604 fsp_str_dbg(fsp), (double)fsp->fsp_name->st.st_ex_size, (double)len,
605 (double)space_avail));
607 if (len > space_avail) {
615 /****************************************************************************
616 A vfs set_filelen call.
617 set the length of a file from a filedescriptor.
618 Returns 0 on success, -1 on failure.
619 ****************************************************************************/
621 int vfs_set_filelen(files_struct *fsp, off_t len)
625 contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_SET_FILE_LEN);
627 DEBUG(10,("vfs_set_filelen: ftruncate %s to len %.0f\n",
628 fsp_str_dbg(fsp), (double)len));
629 flush_write_cache(fsp, SAMBA_SIZECHANGE_FLUSH);
630 if ((ret = SMB_VFS_FTRUNCATE(fsp, len)) != -1) {
631 set_filelen_write_cache(fsp, len);
632 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
633 FILE_NOTIFY_CHANGE_SIZE
634 | FILE_NOTIFY_CHANGE_ATTRIBUTES,
635 fsp->fsp_name->base_name);
638 contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_SET_FILE_LEN);
643 /****************************************************************************
644 A slow version of fallocate. Fallback code if SMB_VFS_FALLOCATE
645 fails. Needs to be outside of the default version of SMB_VFS_FALLOCATE
646 as this is also called from the default SMB_VFS_FTRUNCATE code.
647 Always extends the file size.
648 Returns 0 on success, -1 on failure.
649 ****************************************************************************/
651 #define SPARSE_BUF_WRITE_SIZE (32*1024)
653 int vfs_slow_fallocate(files_struct *fsp, off_t offset, off_t len)
659 sparse_buf = SMB_CALLOC_ARRAY(char, SPARSE_BUF_WRITE_SIZE);
666 while (total < len) {
667 size_t curr_write_size = MIN(SPARSE_BUF_WRITE_SIZE, (len - total));
669 pwrite_ret = SMB_VFS_PWRITE(fsp, sparse_buf, curr_write_size, offset + total);
670 if (pwrite_ret == -1) {
671 int saved_errno = errno;
672 DEBUG(10,("vfs_slow_fallocate: SMB_VFS_PWRITE for file "
673 "%s failed with error %s\n",
674 fsp_str_dbg(fsp), strerror(saved_errno)));
684 /****************************************************************************
685 A vfs fill sparse call.
686 Writes zeros from the end of file to len, if len is greater than EOF.
687 Used only by strict_sync.
688 Returns 0 on success, -1 on failure.
689 ****************************************************************************/
691 int vfs_fill_sparse(files_struct *fsp, off_t len)
698 status = vfs_stat_fsp(fsp);
699 if (!NT_STATUS_IS_OK(status)) {
703 if (len <= fsp->fsp_name->st.st_ex_size) {
708 if (S_ISFIFO(fsp->fsp_name->st.st_ex_mode)) {
713 DEBUG(10,("vfs_fill_sparse: write zeros in file %s from len %.0f to "
714 "len %.0f (%.0f bytes)\n", fsp_str_dbg(fsp),
715 (double)fsp->fsp_name->st.st_ex_size, (double)len,
716 (double)(len - fsp->fsp_name->st.st_ex_size)));
718 contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_FILL_SPARSE);
720 flush_write_cache(fsp, SAMBA_SIZECHANGE_FLUSH);
722 offset = fsp->fsp_name->st.st_ex_size;
723 num_to_write = len - fsp->fsp_name->st.st_ex_size;
725 /* Only do this on non-stream file handles. */
726 if (fsp->base_fsp == NULL) {
727 /* for allocation try fallocate first. This can fail on some
728 * platforms e.g. when the filesystem doesn't support it and no
729 * emulation is being done by the libc (like on AIX with JFS1). In that
730 * case we do our own emulation. fallocate implementations can
731 * return ENOTSUP or EINVAL in cases like that. */
732 ret = SMB_VFS_FALLOCATE(fsp, 0, offset, num_to_write);
733 if (ret == -1 && errno == ENOSPC) {
739 DEBUG(10,("vfs_fill_sparse: SMB_VFS_FALLOCATE failed with "
740 "error %d. Falling back to slow manual allocation\n", ret));
743 ret = vfs_slow_fallocate(fsp, offset, num_to_write);
748 set_filelen_write_cache(fsp, len);
751 contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_FILL_SPARSE);
755 /****************************************************************************
756 Transfer some data (n bytes) between two file_struct's.
757 ****************************************************************************/
759 static ssize_t vfs_pread_fn(void *file, void *buf, size_t len, off_t offset)
761 struct files_struct *fsp = (struct files_struct *)file;
763 return SMB_VFS_PREAD(fsp, buf, len, offset);
766 static ssize_t vfs_pwrite_fn(void *file, const void *buf, size_t len, off_t offset)
768 struct files_struct *fsp = (struct files_struct *)file;
770 return SMB_VFS_PWRITE(fsp, buf, len, offset);
773 off_t vfs_transfer_file(files_struct *in, files_struct *out, off_t n)
775 return transfer_file_internal((void *)in, (void *)out, n,
776 vfs_pread_fn, vfs_pwrite_fn);
779 /*******************************************************************
780 A vfs_readdir wrapper which just returns the file name.
781 ********************************************************************/
783 const char *vfs_readdirname(connection_struct *conn, void *p,
784 SMB_STRUCT_STAT *sbuf, char **talloced)
786 struct dirent *ptr= NULL;
794 ptr = SMB_VFS_READDIR(conn, (DIR *)p, sbuf);
806 #ifdef HAVE_BROKEN_READDIR_NAME
807 /* using /usr/ucb/cc is BAD */
811 status = SMB_VFS_TRANSLATE_NAME(conn, dname, vfs_translate_to_windows,
812 talloc_tos(), &translated);
813 if (NT_STATUS_EQUAL(status, NT_STATUS_NONE_MAPPED)) {
817 *talloced = translated;
818 if (!NT_STATUS_IS_OK(status)) {
824 /*******************************************************************
825 A wrapper for vfs_chdir().
826 ********************************************************************/
828 int vfs_ChDir(connection_struct *conn, const char *path)
833 LastDir = SMB_STRDUP("");
840 if (*path == '/' && strcsequal(LastDir,path)) {
844 DEBUG(4,("vfs_ChDir to %s\n",path));
846 ret = SMB_VFS_CHDIR(conn,path);
850 LastDir = SMB_STRDUP(path);
853 TALLOC_FREE(conn->cwd);
854 conn->cwd = vfs_GetWd(conn, conn);
855 DEBUG(4,("vfs_ChDir got %s\n",conn->cwd));
860 /*******************************************************************
861 Return the absolute current directory path - given a UNIX pathname.
862 Note that this path is returned in DOS format, not UNIX
863 format. Note this can be called with conn == NULL.
864 ********************************************************************/
866 char *vfs_GetWd(TALLOC_CTX *ctx, connection_struct *conn)
868 char *current_dir = NULL;
870 DATA_BLOB cache_value;
872 struct smb_filename *smb_fname_dot = NULL;
873 struct smb_filename *smb_fname_full = NULL;
875 if (!lp_getwd_cache()) {
879 smb_fname_dot = synthetic_smb_fname(ctx, ".", NULL, NULL);
880 if (smb_fname_dot == NULL) {
885 if (SMB_VFS_STAT(conn, smb_fname_dot) == -1) {
887 * Known to fail for root: the directory may be NFS-mounted
888 * and exported with root_squash (so has no root access).
890 DEBUG(1,("vfs_GetWd: couldn't stat \".\" error %s "
891 "(NFS problem ?)\n", strerror(errno) ));
895 key = vfs_file_id_from_sbuf(conn, &smb_fname_dot->st);
897 if (!memcache_lookup(smbd_memcache(), GETWD_CACHE,
898 data_blob_const(&key, sizeof(key)),
903 SMB_ASSERT((cache_value.length > 0)
904 && (cache_value.data[cache_value.length-1] == '\0'));
906 smb_fname_full = synthetic_smb_fname(ctx, (char *)cache_value.data,
908 if (smb_fname_full == NULL) {
913 if ((SMB_VFS_STAT(conn, smb_fname_full) == 0) &&
914 (smb_fname_dot->st.st_ex_dev == smb_fname_full->st.st_ex_dev) &&
915 (smb_fname_dot->st.st_ex_ino == smb_fname_full->st.st_ex_ino) &&
916 (S_ISDIR(smb_fname_dot->st.st_ex_mode))) {
920 result = talloc_strdup(ctx, smb_fname_full->base_name);
921 if (result == NULL) {
930 * We don't have the information to hand so rely on traditional
931 * methods. The very slow getcwd, which spawns a process on some
932 * systems, or the not quite so bad getwd.
935 current_dir = SMB_VFS_GETWD(conn);
936 if (current_dir == NULL) {
937 DEBUG(0, ("vfs_GetWd: SMB_VFS_GETWD call failed: %s\n",
942 if (lp_getwd_cache() && VALID_STAT(smb_fname_dot->st)) {
943 key = vfs_file_id_from_sbuf(conn, &smb_fname_dot->st);
945 memcache_add(smbd_memcache(), GETWD_CACHE,
946 data_blob_const(&key, sizeof(key)),
947 data_blob_const(current_dir,
948 strlen(current_dir)+1));
951 result = talloc_strdup(ctx, current_dir);
952 if (result == NULL) {
957 TALLOC_FREE(smb_fname_dot);
958 TALLOC_FREE(smb_fname_full);
959 SAFE_FREE(current_dir);
963 /*******************************************************************
964 Reduce a file name, removing .. elements and checking that
965 it is below dir in the heirachy. This uses realpath.
966 This function must run as root, and will return names
967 and valid stat structs that can be checked on open.
968 ********************************************************************/
970 NTSTATUS check_reduced_name_with_privilege(connection_struct *conn,
972 struct smb_request *smbreq)
975 TALLOC_CTX *ctx = talloc_tos();
976 const char *conn_rootdir;
978 char *dir_name = NULL;
979 const char *last_component = NULL;
980 char *resolved_name = NULL;
981 char *saved_dir = NULL;
982 struct smb_filename *smb_fname_cwd = NULL;
983 struct privilege_paths *priv_paths = NULL;
986 DEBUG(3,("check_reduced_name_with_privilege [%s] [%s]\n",
991 priv_paths = talloc_zero(smbreq, struct privilege_paths);
993 status = NT_STATUS_NO_MEMORY;
997 if (!parent_dirname(ctx, fname, &dir_name, &last_component)) {
998 status = NT_STATUS_NO_MEMORY;
1002 priv_paths->parent_name.base_name = talloc_strdup(priv_paths, dir_name);
1003 priv_paths->file_name.base_name = talloc_strdup(priv_paths, last_component);
1005 if (priv_paths->parent_name.base_name == NULL ||
1006 priv_paths->file_name.base_name == NULL) {
1007 status = NT_STATUS_NO_MEMORY;
1011 if (SMB_VFS_STAT(conn, &priv_paths->parent_name) != 0) {
1012 status = map_nt_error_from_unix(errno);
1015 /* Remember where we were. */
1016 saved_dir = vfs_GetWd(ctx, conn);
1018 status = map_nt_error_from_unix(errno);
1022 /* Go to the parent directory to lock in memory. */
1023 if (vfs_ChDir(conn, priv_paths->parent_name.base_name) == -1) {
1024 status = map_nt_error_from_unix(errno);
1028 /* Get the absolute path of the parent directory. */
1029 resolved_name = SMB_VFS_REALPATH(conn,".");
1030 if (!resolved_name) {
1031 status = map_nt_error_from_unix(errno);
1035 if (*resolved_name != '/') {
1036 DEBUG(0,("check_reduced_name_with_privilege: realpath "
1037 "doesn't return absolute paths !\n"));
1038 status = NT_STATUS_OBJECT_NAME_INVALID;
1042 DEBUG(10,("check_reduced_name_with_privilege: realpath [%s] -> [%s]\n",
1043 priv_paths->parent_name.base_name,
1046 /* Now check the stat value is the same. */
1047 smb_fname_cwd = synthetic_smb_fname(talloc_tos(), ".", NULL, NULL);
1048 if (smb_fname_cwd == NULL) {
1049 status = NT_STATUS_NO_MEMORY;
1053 if (SMB_VFS_LSTAT(conn, smb_fname_cwd) != 0) {
1054 status = map_nt_error_from_unix(errno);
1058 /* Ensure we're pointing at the same place. */
1059 if (!check_same_stat(&smb_fname_cwd->st, &priv_paths->parent_name.st)) {
1060 DEBUG(0,("check_reduced_name_with_privilege: "
1061 "device/inode/uid/gid on directory %s changed. "
1062 "Denying access !\n",
1063 priv_paths->parent_name.base_name));
1064 status = NT_STATUS_ACCESS_DENIED;
1068 /* Ensure we're below the connect path. */
1070 conn_rootdir = SMB_VFS_CONNECTPATH(conn, fname);
1071 if (conn_rootdir == NULL) {
1072 DEBUG(2, ("check_reduced_name_with_privilege: Could not get "
1074 status = NT_STATUS_ACCESS_DENIED;
1078 rootdir_len = strlen(conn_rootdir);
1081 * In the case of rootdir_len == 1, we know that conn_rootdir is
1082 * "/", and we also know that resolved_name starts with a slash.
1083 * So, in this corner case, resolved_name is automatically a
1084 * sub-directory of the conn_rootdir. Thus we can skip the string
1085 * comparison and the next character checks (which are even
1086 * wrong in this case).
1088 if (rootdir_len != 1) {
1091 matched = (strncmp(conn_rootdir, resolved_name,
1094 if (!matched || (resolved_name[rootdir_len] != '/' &&
1095 resolved_name[rootdir_len] != '\0')) {
1096 DEBUG(2, ("check_reduced_name_with_privilege: Bad "
1097 "access attempt: %s is a symlink outside the "
1100 DEBUGADD(2, ("conn_rootdir =%s\n", conn_rootdir));
1101 DEBUGADD(2, ("resolved_name=%s\n", resolved_name));
1102 status = NT_STATUS_ACCESS_DENIED;
1107 /* Now ensure that the last component either doesn't
1108 exist, or is *NOT* a symlink. */
1110 ret = SMB_VFS_LSTAT(conn, &priv_paths->file_name);
1112 /* Errno must be ENOENT for this be ok. */
1113 if (errno != ENOENT) {
1114 status = map_nt_error_from_unix(errno);
1115 DEBUG(2, ("check_reduced_name_with_privilege: "
1116 "LSTAT on %s failed with %s\n",
1117 priv_paths->file_name.base_name,
1118 nt_errstr(status)));
1123 if (VALID_STAT(priv_paths->file_name.st) &&
1124 S_ISLNK(priv_paths->file_name.st.st_ex_mode)) {
1125 DEBUG(2, ("check_reduced_name_with_privilege: "
1126 "Last component %s is a symlink. Denying"
1128 priv_paths->file_name.base_name));
1129 status = NT_STATUS_ACCESS_DENIED;
1133 smbreq->priv_paths = priv_paths;
1134 status = NT_STATUS_OK;
1139 vfs_ChDir(conn, saved_dir);
1141 SAFE_FREE(resolved_name);
1142 if (!NT_STATUS_IS_OK(status)) {
1143 TALLOC_FREE(priv_paths);
1145 TALLOC_FREE(dir_name);
1149 /*******************************************************************
1150 Reduce a file name, removing .. elements and checking that
1151 it is below dir in the heirachy. This uses realpath.
1152 ********************************************************************/
1154 NTSTATUS check_reduced_name(connection_struct *conn, const char *fname)
1156 char *resolved_name = NULL;
1157 bool allow_symlinks = true;
1158 bool allow_widelinks = false;
1160 DBG_DEBUG("check_reduced_name [%s] [%s]\n", fname, conn->connectpath);
1162 resolved_name = SMB_VFS_REALPATH(conn,fname);
1164 if (!resolved_name) {
1167 DEBUG(3,("check_reduced_name: Component not a "
1168 "directory in getting realpath for "
1170 return NT_STATUS_OBJECT_PATH_NOT_FOUND;
1173 TALLOC_CTX *ctx = talloc_tos();
1174 char *dir_name = NULL;
1175 const char *last_component = NULL;
1176 char *new_name = NULL;
1179 /* Last component didn't exist.
1180 Remove it and try and canonicalise
1181 the directory name. */
1182 if (!parent_dirname(ctx, fname,
1185 return NT_STATUS_NO_MEMORY;
1188 resolved_name = SMB_VFS_REALPATH(conn,dir_name);
1189 if (!resolved_name) {
1190 NTSTATUS status = map_nt_error_from_unix(errno);
1192 if (errno == ENOENT || errno == ENOTDIR) {
1193 status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
1196 DEBUG(3,("check_reduce_name: "
1197 "couldn't get realpath for "
1200 nt_errstr(status)));
1203 ret = asprintf(&new_name, "%s/%s",
1204 resolved_name, last_component);
1205 SAFE_FREE(resolved_name);
1207 return NT_STATUS_NO_MEMORY;
1209 resolved_name = new_name;
1213 DEBUG(3,("check_reduced_name: couldn't get "
1214 "realpath for %s\n", fname));
1215 return map_nt_error_from_unix(errno);
1219 DEBUG(10,("check_reduced_name realpath [%s] -> [%s]\n", fname,
1222 if (*resolved_name != '/') {
1223 DEBUG(0,("check_reduced_name: realpath doesn't return "
1224 "absolute paths !\n"));
1225 SAFE_FREE(resolved_name);
1226 return NT_STATUS_OBJECT_NAME_INVALID;
1229 allow_widelinks = lp_widelinks(SNUM(conn));
1230 allow_symlinks = lp_follow_symlinks(SNUM(conn));
1232 /* Common widelinks and symlinks checks. */
1233 if (!allow_widelinks || !allow_symlinks) {
1234 const char *conn_rootdir;
1237 conn_rootdir = SMB_VFS_CONNECTPATH(conn, fname);
1238 if (conn_rootdir == NULL) {
1239 DEBUG(2, ("check_reduced_name: Could not get "
1241 SAFE_FREE(resolved_name);
1242 return NT_STATUS_ACCESS_DENIED;
1245 rootdir_len = strlen(conn_rootdir);
1248 * In the case of rootdir_len == 1, we know that
1249 * conn_rootdir is "/", and we also know that
1250 * resolved_name starts with a slash. So, in this
1251 * corner case, resolved_name is automatically a
1252 * sub-directory of the conn_rootdir. Thus we can skip
1253 * the string comparison and the next character checks
1254 * (which are even wrong in this case).
1256 if (rootdir_len != 1) {
1259 matched = (strncmp(conn_rootdir, resolved_name,
1261 if (!matched || (resolved_name[rootdir_len] != '/' &&
1262 resolved_name[rootdir_len] != '\0')) {
1263 DEBUG(2, ("check_reduced_name: Bad access "
1264 "attempt: %s is a symlink outside the "
1265 "share path\n", fname));
1266 DEBUGADD(2, ("conn_rootdir =%s\n",
1268 DEBUGADD(2, ("resolved_name=%s\n",
1270 SAFE_FREE(resolved_name);
1271 return NT_STATUS_ACCESS_DENIED;
1275 /* Extra checks if all symlinks are disallowed. */
1276 if (!allow_symlinks) {
1277 /* fname can't have changed in resolved_path. */
1278 const char *p = &resolved_name[rootdir_len];
1280 /* *p can be '\0' if fname was "." */
1281 if (*p == '\0' && ISDOT(fname)) {
1286 DEBUG(2, ("check_reduced_name: logic error (%c) "
1287 "in resolved_name: %s\n",
1290 SAFE_FREE(resolved_name);
1291 return NT_STATUS_ACCESS_DENIED;
1295 if (strcmp(fname, p)!=0) {
1296 DEBUG(2, ("check_reduced_name: Bad access "
1297 "attempt: %s is a symlink to %s\n",
1299 SAFE_FREE(resolved_name);
1300 return NT_STATUS_ACCESS_DENIED;
1307 DBG_INFO("%s reduced to %s\n", fname, resolved_name);
1308 SAFE_FREE(resolved_name);
1309 return NT_STATUS_OK;
1313 * XXX: This is temporary and there should be no callers of this once
1314 * smb_filename is plumbed through all path based operations.
1316 * Called when we know stream name parsing has already been done.
1318 int vfs_stat_smb_basename(struct connection_struct *conn, const char *fname,
1319 SMB_STRUCT_STAT *psbuf)
1321 struct smb_filename smb_fname = {
1322 .base_name = discard_const_p(char, fname)
1326 if (lp_posix_pathnames()) {
1327 ret = SMB_VFS_LSTAT(conn, &smb_fname);
1329 ret = SMB_VFS_STAT(conn, &smb_fname);
1333 *psbuf = smb_fname.st;
1339 * Ensure LSTAT is called for POSIX paths.
1342 NTSTATUS vfs_stat_fsp(files_struct *fsp)
1346 if(fsp->fh->fd == -1) {
1347 if (fsp->posix_flags & FSP_POSIX_FLAGS_OPEN) {
1348 ret = SMB_VFS_LSTAT(fsp->conn, fsp->fsp_name);
1350 ret = SMB_VFS_STAT(fsp->conn, fsp->fsp_name);
1353 return map_nt_error_from_unix(errno);
1356 if(SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st) != 0) {
1357 return map_nt_error_from_unix(errno);
1360 return NT_STATUS_OK;
1364 * Initialize num_streams and streams, then call VFS op streaminfo
1366 NTSTATUS vfs_streaminfo(connection_struct *conn,
1367 struct files_struct *fsp,
1369 TALLOC_CTX *mem_ctx,
1370 unsigned int *num_streams,
1371 struct stream_struct **streams)
1375 return SMB_VFS_STREAMINFO(conn, fsp, fname, mem_ctx, num_streams, streams);
1379 generate a file_id from a stat structure
1381 struct file_id vfs_file_id_from_sbuf(connection_struct *conn, const SMB_STRUCT_STAT *sbuf)
1383 return SMB_VFS_FILE_ID_CREATE(conn, sbuf);
1386 int smb_vfs_call_connect(struct vfs_handle_struct *handle,
1387 const char *service, const char *user)
1390 return handle->fns->connect_fn(handle, service, user);
1393 void smb_vfs_call_disconnect(struct vfs_handle_struct *handle)
1395 VFS_FIND(disconnect);
1396 handle->fns->disconnect_fn(handle);
1399 uint64_t smb_vfs_call_disk_free(struct vfs_handle_struct *handle,
1400 const char *path, uint64_t *bsize,
1401 uint64_t *dfree, uint64_t *dsize)
1403 VFS_FIND(disk_free);
1404 return handle->fns->disk_free_fn(handle, path, bsize, dfree, dsize);
1407 int smb_vfs_call_get_quota(struct vfs_handle_struct *handle, const char *path,
1408 enum SMB_QUOTA_TYPE qtype, unid_t id,
1411 VFS_FIND(get_quota);
1412 return handle->fns->get_quota_fn(handle, path, qtype, id, qt);
1415 int smb_vfs_call_set_quota(struct vfs_handle_struct *handle,
1416 enum SMB_QUOTA_TYPE qtype, unid_t id,
1419 VFS_FIND(set_quota);
1420 return handle->fns->set_quota_fn(handle, qtype, id, qt);
1423 int smb_vfs_call_get_shadow_copy_data(struct vfs_handle_struct *handle,
1424 struct files_struct *fsp,
1425 struct shadow_copy_data *shadow_copy_data,
1428 VFS_FIND(get_shadow_copy_data);
1429 return handle->fns->get_shadow_copy_data_fn(handle, fsp,
1433 int smb_vfs_call_statvfs(struct vfs_handle_struct *handle, const char *path,
1434 struct vfs_statvfs_struct *statbuf)
1437 return handle->fns->statvfs_fn(handle, path, statbuf);
1440 uint32_t smb_vfs_call_fs_capabilities(struct vfs_handle_struct *handle,
1441 enum timestamp_set_resolution *p_ts_res)
1443 VFS_FIND(fs_capabilities);
1444 return handle->fns->fs_capabilities_fn(handle, p_ts_res);
1447 NTSTATUS smb_vfs_call_get_dfs_referrals(struct vfs_handle_struct *handle,
1448 struct dfs_GetDFSReferral *r)
1450 VFS_FIND(get_dfs_referrals);
1451 return handle->fns->get_dfs_referrals_fn(handle, r);
1454 DIR *smb_vfs_call_opendir(struct vfs_handle_struct *handle,
1455 const struct smb_filename *smb_fname,
1457 uint32_t attributes)
1460 return handle->fns->opendir_fn(handle, smb_fname, mask, attributes);
1463 DIR *smb_vfs_call_fdopendir(struct vfs_handle_struct *handle,
1464 struct files_struct *fsp,
1466 uint32_t attributes)
1468 VFS_FIND(fdopendir);
1469 return handle->fns->fdopendir_fn(handle, fsp, mask, attributes);
1472 struct dirent *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
1474 SMB_STRUCT_STAT *sbuf)
1477 return handle->fns->readdir_fn(handle, dirp, sbuf);
1480 void smb_vfs_call_seekdir(struct vfs_handle_struct *handle,
1481 DIR *dirp, long offset)
1484 handle->fns->seekdir_fn(handle, dirp, offset);
1487 long smb_vfs_call_telldir(struct vfs_handle_struct *handle,
1491 return handle->fns->telldir_fn(handle, dirp);
1494 void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
1497 VFS_FIND(rewind_dir);
1498 handle->fns->rewind_dir_fn(handle, dirp);
1501 int smb_vfs_call_mkdir(struct vfs_handle_struct *handle,
1502 const struct smb_filename *smb_fname,
1506 return handle->fns->mkdir_fn(handle, smb_fname, mode);
1509 int smb_vfs_call_rmdir(struct vfs_handle_struct *handle,
1510 const struct smb_filename *smb_fname)
1513 return handle->fns->rmdir_fn(handle, smb_fname);
1516 int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
1520 return handle->fns->closedir_fn(handle, dir);
1523 void smb_vfs_call_init_search_op(struct vfs_handle_struct *handle,
1526 VFS_FIND(init_search_op);
1527 handle->fns->init_search_op_fn(handle, dirp);
1530 int smb_vfs_call_open(struct vfs_handle_struct *handle,
1531 struct smb_filename *smb_fname, struct files_struct *fsp,
1532 int flags, mode_t mode)
1535 return handle->fns->open_fn(handle, smb_fname, fsp, flags, mode);
1538 NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
1539 struct smb_request *req,
1540 uint16_t root_dir_fid,
1541 struct smb_filename *smb_fname,
1542 uint32_t access_mask,
1543 uint32_t share_access,
1544 uint32_t create_disposition,
1545 uint32_t create_options,
1546 uint32_t file_attributes,
1547 uint32_t oplock_request,
1548 struct smb2_lease *lease,
1549 uint64_t allocation_size,
1550 uint32_t private_flags,
1551 struct security_descriptor *sd,
1552 struct ea_list *ea_list,
1553 files_struct **result,
1555 const struct smb2_create_blobs *in_context_blobs,
1556 struct smb2_create_blobs *out_context_blobs)
1558 VFS_FIND(create_file);
1559 return handle->fns->create_file_fn(
1560 handle, req, root_dir_fid, smb_fname, access_mask,
1561 share_access, create_disposition, create_options,
1562 file_attributes, oplock_request, lease, allocation_size,
1563 private_flags, sd, ea_list,
1564 result, pinfo, in_context_blobs, out_context_blobs);
1567 int smb_vfs_call_close(struct vfs_handle_struct *handle,
1568 struct files_struct *fsp)
1571 return handle->fns->close_fn(handle, fsp);
1574 ssize_t smb_vfs_call_read(struct vfs_handle_struct *handle,
1575 struct files_struct *fsp, void *data, size_t n)
1578 return handle->fns->read_fn(handle, fsp, data, n);
1581 ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
1582 struct files_struct *fsp, void *data, size_t n,
1586 return handle->fns->pread_fn(handle, fsp, data, n, offset);
1589 struct smb_vfs_call_pread_state {
1590 ssize_t (*recv_fn)(struct tevent_req *req, int *err);
1594 static void smb_vfs_call_pread_done(struct tevent_req *subreq);
1596 struct tevent_req *smb_vfs_call_pread_send(struct vfs_handle_struct *handle,
1597 TALLOC_CTX *mem_ctx,
1598 struct tevent_context *ev,
1599 struct files_struct *fsp,
1601 size_t n, off_t offset)
1603 struct tevent_req *req, *subreq;
1604 struct smb_vfs_call_pread_state *state;
1606 req = tevent_req_create(mem_ctx, &state,
1607 struct smb_vfs_call_pread_state);
1611 VFS_FIND(pread_send);
1612 state->recv_fn = handle->fns->pread_recv_fn;
1614 subreq = handle->fns->pread_send_fn(handle, state, ev, fsp, data, n,
1616 if (tevent_req_nomem(subreq, req)) {
1617 return tevent_req_post(req, ev);
1619 tevent_req_set_callback(subreq, smb_vfs_call_pread_done, req);
1623 static void smb_vfs_call_pread_done(struct tevent_req *subreq)
1625 struct tevent_req *req = tevent_req_callback_data(
1626 subreq, struct tevent_req);
1627 struct smb_vfs_call_pread_state *state = tevent_req_data(
1628 req, struct smb_vfs_call_pread_state);
1631 state->retval = state->recv_fn(subreq, &err);
1632 TALLOC_FREE(subreq);
1633 if (state->retval == -1) {
1634 tevent_req_error(req, err);
1637 tevent_req_done(req);
1640 ssize_t SMB_VFS_PREAD_RECV(struct tevent_req *req, int *perrno)
1642 struct smb_vfs_call_pread_state *state = tevent_req_data(
1643 req, struct smb_vfs_call_pread_state);
1646 if (tevent_req_is_unix_error(req, &err)) {
1650 return state->retval;
1653 ssize_t smb_vfs_call_write(struct vfs_handle_struct *handle,
1654 struct files_struct *fsp, const void *data,
1658 return handle->fns->write_fn(handle, fsp, data, n);
1661 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
1662 struct files_struct *fsp, const void *data,
1663 size_t n, off_t offset)
1666 return handle->fns->pwrite_fn(handle, fsp, data, n, offset);
1669 struct smb_vfs_call_pwrite_state {
1670 ssize_t (*recv_fn)(struct tevent_req *req, int *err);
1674 static void smb_vfs_call_pwrite_done(struct tevent_req *subreq);
1676 struct tevent_req *smb_vfs_call_pwrite_send(struct vfs_handle_struct *handle,
1677 TALLOC_CTX *mem_ctx,
1678 struct tevent_context *ev,
1679 struct files_struct *fsp,
1681 size_t n, off_t offset)
1683 struct tevent_req *req, *subreq;
1684 struct smb_vfs_call_pwrite_state *state;
1686 req = tevent_req_create(mem_ctx, &state,
1687 struct smb_vfs_call_pwrite_state);
1691 VFS_FIND(pwrite_send);
1692 state->recv_fn = handle->fns->pwrite_recv_fn;
1694 subreq = handle->fns->pwrite_send_fn(handle, state, ev, fsp, data, n,
1696 if (tevent_req_nomem(subreq, req)) {
1697 return tevent_req_post(req, ev);
1699 tevent_req_set_callback(subreq, smb_vfs_call_pwrite_done, req);
1703 static void smb_vfs_call_pwrite_done(struct tevent_req *subreq)
1705 struct tevent_req *req = tevent_req_callback_data(
1706 subreq, struct tevent_req);
1707 struct smb_vfs_call_pwrite_state *state = tevent_req_data(
1708 req, struct smb_vfs_call_pwrite_state);
1711 state->retval = state->recv_fn(subreq, &err);
1712 TALLOC_FREE(subreq);
1713 if (state->retval == -1) {
1714 tevent_req_error(req, err);
1717 tevent_req_done(req);
1720 ssize_t SMB_VFS_PWRITE_RECV(struct tevent_req *req, int *perrno)
1722 struct smb_vfs_call_pwrite_state *state = tevent_req_data(
1723 req, struct smb_vfs_call_pwrite_state);
1726 if (tevent_req_is_unix_error(req, &err)) {
1730 return state->retval;
1733 off_t smb_vfs_call_lseek(struct vfs_handle_struct *handle,
1734 struct files_struct *fsp, off_t offset,
1738 return handle->fns->lseek_fn(handle, fsp, offset, whence);
1741 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
1742 files_struct *fromfsp, const DATA_BLOB *header,
1743 off_t offset, size_t count)
1746 return handle->fns->sendfile_fn(handle, tofd, fromfsp, header, offset,
1750 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
1751 files_struct *tofsp, off_t offset,
1755 return handle->fns->recvfile_fn(handle, fromfd, tofsp, offset, count);
1758 int smb_vfs_call_rename(struct vfs_handle_struct *handle,
1759 const struct smb_filename *smb_fname_src,
1760 const struct smb_filename *smb_fname_dst)
1763 return handle->fns->rename_fn(handle, smb_fname_src, smb_fname_dst);
1766 int smb_vfs_call_fsync(struct vfs_handle_struct *handle,
1767 struct files_struct *fsp)
1770 return handle->fns->fsync_fn(handle, fsp);
1773 struct smb_vfs_call_fsync_state {
1774 int (*recv_fn)(struct tevent_req *req, int *err);
1778 static void smb_vfs_call_fsync_done(struct tevent_req *subreq);
1780 struct tevent_req *smb_vfs_call_fsync_send(struct vfs_handle_struct *handle,
1781 TALLOC_CTX *mem_ctx,
1782 struct tevent_context *ev,
1783 struct files_struct *fsp)
1785 struct tevent_req *req, *subreq;
1786 struct smb_vfs_call_fsync_state *state;
1788 req = tevent_req_create(mem_ctx, &state,
1789 struct smb_vfs_call_fsync_state);
1793 VFS_FIND(fsync_send);
1794 state->recv_fn = handle->fns->fsync_recv_fn;
1796 subreq = handle->fns->fsync_send_fn(handle, state, ev, fsp);
1797 if (tevent_req_nomem(subreq, req)) {
1798 return tevent_req_post(req, ev);
1800 tevent_req_set_callback(subreq, smb_vfs_call_fsync_done, req);
1804 static void smb_vfs_call_fsync_done(struct tevent_req *subreq)
1806 struct tevent_req *req = tevent_req_callback_data(
1807 subreq, struct tevent_req);
1808 struct smb_vfs_call_fsync_state *state = tevent_req_data(
1809 req, struct smb_vfs_call_fsync_state);
1812 state->retval = state->recv_fn(subreq, &err);
1813 TALLOC_FREE(subreq);
1814 if (state->retval == -1) {
1815 tevent_req_error(req, err);
1818 tevent_req_done(req);
1821 int SMB_VFS_FSYNC_RECV(struct tevent_req *req, int *perrno)
1823 struct smb_vfs_call_fsync_state *state = tevent_req_data(
1824 req, struct smb_vfs_call_fsync_state);
1827 if (tevent_req_is_unix_error(req, &err)) {
1831 return state->retval;
1835 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
1836 struct smb_filename *smb_fname)
1839 return handle->fns->stat_fn(handle, smb_fname);
1842 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
1843 struct files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1846 return handle->fns->fstat_fn(handle, fsp, sbuf);
1849 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
1850 struct smb_filename *smb_filename)
1853 return handle->fns->lstat_fn(handle, smb_filename);
1856 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
1857 struct files_struct *fsp,
1858 const SMB_STRUCT_STAT *sbuf)
1860 VFS_FIND(get_alloc_size);
1861 return handle->fns->get_alloc_size_fn(handle, fsp, sbuf);
1864 int smb_vfs_call_unlink(struct vfs_handle_struct *handle,
1865 const struct smb_filename *smb_fname)
1868 return handle->fns->unlink_fn(handle, smb_fname);
1871 int smb_vfs_call_chmod(struct vfs_handle_struct *handle, const char *path,
1875 return handle->fns->chmod_fn(handle, path, mode);
1878 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
1879 struct files_struct *fsp, mode_t mode)
1882 return handle->fns->fchmod_fn(handle, fsp, mode);
1885 int smb_vfs_call_chown(struct vfs_handle_struct *handle, const char *path,
1886 uid_t uid, gid_t gid)
1889 return handle->fns->chown_fn(handle, path, uid, gid);
1892 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
1893 struct files_struct *fsp, uid_t uid, gid_t gid)
1896 return handle->fns->fchown_fn(handle, fsp, uid, gid);
1899 int smb_vfs_call_lchown(struct vfs_handle_struct *handle, const char *path,
1900 uid_t uid, gid_t gid)
1903 return handle->fns->lchown_fn(handle, path, uid, gid);
1906 NTSTATUS vfs_chown_fsp(files_struct *fsp, uid_t uid, gid_t gid)
1909 bool as_root = false;
1911 char *saved_dir = NULL;
1912 char *parent_dir = NULL;
1915 if (fsp->fh->fd != -1) {
1917 ret = SMB_VFS_FCHOWN(fsp, uid, gid);
1919 return NT_STATUS_OK;
1921 if (ret == -1 && errno != ENOSYS) {
1922 return map_nt_error_from_unix(errno);
1926 as_root = (geteuid() == 0);
1930 * We are being asked to chown as root. Make
1931 * sure we chdir() into the path to pin it,
1932 * and always act using lchown to ensure we
1933 * don't deref any symbolic links.
1935 const char *final_component = NULL;
1936 struct smb_filename local_fname;
1938 saved_dir = vfs_GetWd(talloc_tos(),fsp->conn);
1940 status = map_nt_error_from_unix(errno);
1941 DEBUG(0,("vfs_chown_fsp: failed to get "
1942 "current working directory. Error was %s\n",
1947 if (!parent_dirname(talloc_tos(),
1948 fsp->fsp_name->base_name,
1950 &final_component)) {
1951 return NT_STATUS_NO_MEMORY;
1954 /* cd into the parent dir to pin it. */
1955 ret = vfs_ChDir(fsp->conn, parent_dir);
1957 return map_nt_error_from_unix(errno);
1960 ZERO_STRUCT(local_fname);
1961 local_fname.base_name = discard_const_p(char, final_component);
1963 /* Must use lstat here. */
1964 ret = SMB_VFS_LSTAT(fsp->conn, &local_fname);
1966 status = map_nt_error_from_unix(errno);
1970 /* Ensure it matches the fsp stat. */
1971 if (!check_same_stat(&local_fname.st, &fsp->fsp_name->st)) {
1972 status = NT_STATUS_ACCESS_DENIED;
1975 path = final_component;
1977 path = fsp->fsp_name->base_name;
1980 if ((fsp->posix_flags & FSP_POSIX_FLAGS_OPEN) || as_root) {
1981 ret = SMB_VFS_LCHOWN(fsp->conn,
1985 ret = SMB_VFS_CHOWN(fsp->conn,
1991 status = NT_STATUS_OK;
1993 status = map_nt_error_from_unix(errno);
1999 vfs_ChDir(fsp->conn,saved_dir);
2000 TALLOC_FREE(saved_dir);
2001 TALLOC_FREE(parent_dir);
2006 int smb_vfs_call_chdir(struct vfs_handle_struct *handle, const char *path)
2009 return handle->fns->chdir_fn(handle, path);
2012 char *smb_vfs_call_getwd(struct vfs_handle_struct *handle)
2015 return handle->fns->getwd_fn(handle);
2018 int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
2019 const struct smb_filename *smb_fname,
2020 struct smb_file_time *ft)
2023 return handle->fns->ntimes_fn(handle, smb_fname, ft);
2026 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
2027 struct files_struct *fsp, off_t offset)
2029 VFS_FIND(ftruncate);
2030 return handle->fns->ftruncate_fn(handle, fsp, offset);
2033 int smb_vfs_call_fallocate(struct vfs_handle_struct *handle,
2034 struct files_struct *fsp,
2039 VFS_FIND(fallocate);
2040 return handle->fns->fallocate_fn(handle, fsp, mode, offset, len);
2043 int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
2044 struct files_struct *fsp, uint32_t share_mode,
2045 uint32_t access_mask)
2047 VFS_FIND(kernel_flock);
2048 return handle->fns->kernel_flock_fn(handle, fsp, share_mode,
2052 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
2053 struct files_struct *fsp, int leasetype)
2055 VFS_FIND(linux_setlease);
2056 return handle->fns->linux_setlease_fn(handle, fsp, leasetype);
2059 int smb_vfs_call_symlink(struct vfs_handle_struct *handle, const char *oldpath,
2060 const char *newpath)
2063 return handle->fns->symlink_fn(handle, oldpath, newpath);
2066 int smb_vfs_call_readlink(struct vfs_handle_struct *handle,
2067 const char *path, char *buf, size_t bufsiz)
2070 return handle->fns->readlink_fn(handle, path, buf, bufsiz);
2073 int smb_vfs_call_link(struct vfs_handle_struct *handle, const char *oldpath,
2074 const char *newpath)
2077 return handle->fns->link_fn(handle, oldpath, newpath);
2080 int smb_vfs_call_mknod(struct vfs_handle_struct *handle, const char *path,
2081 mode_t mode, SMB_DEV_T dev)
2084 return handle->fns->mknod_fn(handle, path, mode, dev);
2087 char *smb_vfs_call_realpath(struct vfs_handle_struct *handle, const char *path)
2090 return handle->fns->realpath_fn(handle, path);
2093 int smb_vfs_call_chflags(struct vfs_handle_struct *handle, const char *path,
2097 return handle->fns->chflags_fn(handle, path, flags);
2100 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
2101 const SMB_STRUCT_STAT *sbuf)
2103 VFS_FIND(file_id_create);
2104 return handle->fns->file_id_create_fn(handle, sbuf);
2107 NTSTATUS smb_vfs_call_streaminfo(struct vfs_handle_struct *handle,
2108 struct files_struct *fsp,
2110 TALLOC_CTX *mem_ctx,
2111 unsigned int *num_streams,
2112 struct stream_struct **streams)
2114 VFS_FIND(streaminfo);
2115 return handle->fns->streaminfo_fn(handle, fsp, fname, mem_ctx,
2116 num_streams, streams);
2119 int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
2120 const char *path, const char *name,
2121 TALLOC_CTX *mem_ctx, char **found_name)
2123 VFS_FIND(get_real_filename);
2124 return handle->fns->get_real_filename_fn(handle, path, name, mem_ctx,
2128 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
2129 const char *filename)
2131 VFS_FIND(connectpath);
2132 return handle->fns->connectpath_fn(handle, filename);
2135 bool smb_vfs_call_strict_lock(struct vfs_handle_struct *handle,
2136 struct files_struct *fsp,
2137 struct lock_struct *plock)
2139 VFS_FIND(strict_lock);
2140 return handle->fns->strict_lock_fn(handle, fsp, plock);
2143 void smb_vfs_call_strict_unlock(struct vfs_handle_struct *handle,
2144 struct files_struct *fsp,
2145 struct lock_struct *plock)
2147 VFS_FIND(strict_unlock);
2148 handle->fns->strict_unlock_fn(handle, fsp, plock);
2151 NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
2153 enum vfs_translate_direction direction,
2154 TALLOC_CTX *mem_ctx,
2157 VFS_FIND(translate_name);
2158 return handle->fns->translate_name_fn(handle, name, direction, mem_ctx,
2162 NTSTATUS smb_vfs_call_fsctl(struct vfs_handle_struct *handle,
2163 struct files_struct *fsp,
2167 const uint8_t *in_data,
2170 uint32_t max_out_len,
2174 return handle->fns->fsctl_fn(handle, fsp, ctx, function, req_flags,
2175 in_data, in_len, out_data, max_out_len,
2179 struct tevent_req *smb_vfs_call_copy_chunk_send(struct vfs_handle_struct *handle,
2180 TALLOC_CTX *mem_ctx,
2181 struct tevent_context *ev,
2182 struct files_struct *src_fsp,
2184 struct files_struct *dest_fsp,
2188 VFS_FIND(copy_chunk_send);
2189 return handle->fns->copy_chunk_send_fn(handle, mem_ctx, ev, src_fsp,
2190 src_off, dest_fsp, dest_off, num);
2193 NTSTATUS smb_vfs_call_copy_chunk_recv(struct vfs_handle_struct *handle,
2194 struct tevent_req *req,
2197 VFS_FIND(copy_chunk_recv);
2198 return handle->fns->copy_chunk_recv_fn(handle, req, copied);
2201 NTSTATUS smb_vfs_call_get_compression(vfs_handle_struct *handle,
2202 TALLOC_CTX *mem_ctx,
2203 struct files_struct *fsp,
2204 struct smb_filename *smb_fname,
2205 uint16_t *_compression_fmt)
2207 VFS_FIND(get_compression);
2208 return handle->fns->get_compression_fn(handle, mem_ctx, fsp, smb_fname,
2212 NTSTATUS smb_vfs_call_set_compression(vfs_handle_struct *handle,
2213 TALLOC_CTX *mem_ctx,
2214 struct files_struct *fsp,
2215 uint16_t compression_fmt)
2217 VFS_FIND(set_compression);
2218 return handle->fns->set_compression_fn(handle, mem_ctx, fsp,
2222 NTSTATUS smb_vfs_call_snap_check_path(vfs_handle_struct *handle,
2223 TALLOC_CTX *mem_ctx,
2224 const char *service_path,
2227 VFS_FIND(snap_check_path);
2228 return handle->fns->snap_check_path_fn(handle, mem_ctx, service_path,
2232 NTSTATUS smb_vfs_call_snap_create(struct vfs_handle_struct *handle,
2233 TALLOC_CTX *mem_ctx,
2234 const char *base_volume,
2240 VFS_FIND(snap_create);
2241 return handle->fns->snap_create_fn(handle, mem_ctx, base_volume, tstamp,
2242 rw, base_path, snap_path);
2245 NTSTATUS smb_vfs_call_snap_delete(struct vfs_handle_struct *handle,
2246 TALLOC_CTX *mem_ctx,
2250 VFS_FIND(snap_delete);
2251 return handle->fns->snap_delete_fn(handle, mem_ctx, base_path,
2255 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
2256 struct files_struct *fsp,
2257 uint32_t security_info,
2258 TALLOC_CTX *mem_ctx,
2259 struct security_descriptor **ppdesc)
2261 VFS_FIND(fget_nt_acl);
2262 return handle->fns->fget_nt_acl_fn(handle, fsp, security_info,
2266 NTSTATUS smb_vfs_call_get_nt_acl(struct vfs_handle_struct *handle,
2267 const struct smb_filename *smb_fname,
2268 uint32_t security_info,
2269 TALLOC_CTX *mem_ctx,
2270 struct security_descriptor **ppdesc)
2272 VFS_FIND(get_nt_acl);
2273 return handle->fns->get_nt_acl_fn(handle,
2280 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
2281 struct files_struct *fsp,
2282 uint32_t security_info_sent,
2283 const struct security_descriptor *psd)
2285 VFS_FIND(fset_nt_acl);
2286 return handle->fns->fset_nt_acl_fn(handle, fsp, security_info_sent,
2290 NTSTATUS smb_vfs_call_audit_file(struct vfs_handle_struct *handle,
2291 struct smb_filename *file,
2292 struct security_acl *sacl,
2293 uint32_t access_requested,
2294 uint32_t access_denied)
2296 VFS_FIND(audit_file);
2297 return handle->fns->audit_file_fn(handle,
2304 int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle, const char *name,
2307 VFS_FIND(chmod_acl);
2308 return handle->fns->chmod_acl_fn(handle, name, mode);
2311 int smb_vfs_call_fchmod_acl(struct vfs_handle_struct *handle,
2312 struct files_struct *fsp, mode_t mode)
2314 VFS_FIND(fchmod_acl);
2315 return handle->fns->fchmod_acl_fn(handle, fsp, mode);
2318 SMB_ACL_T smb_vfs_call_sys_acl_get_file(struct vfs_handle_struct *handle,
2320 SMB_ACL_TYPE_T type,
2321 TALLOC_CTX *mem_ctx)
2323 VFS_FIND(sys_acl_get_file);
2324 return handle->fns->sys_acl_get_file_fn(handle, path_p, type, mem_ctx);
2327 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
2328 struct files_struct *fsp,
2329 TALLOC_CTX *mem_ctx)
2331 VFS_FIND(sys_acl_get_fd);
2332 return handle->fns->sys_acl_get_fd_fn(handle, fsp, mem_ctx);
2335 int smb_vfs_call_sys_acl_blob_get_file(struct vfs_handle_struct *handle,
2337 TALLOC_CTX *mem_ctx,
2338 char **blob_description,
2341 VFS_FIND(sys_acl_blob_get_file);
2342 return handle->fns->sys_acl_blob_get_file_fn(handle, path_p, mem_ctx, blob_description, blob);
2345 int smb_vfs_call_sys_acl_blob_get_fd(struct vfs_handle_struct *handle,
2346 struct files_struct *fsp,
2347 TALLOC_CTX *mem_ctx,
2348 char **blob_description,
2351 VFS_FIND(sys_acl_blob_get_fd);
2352 return handle->fns->sys_acl_blob_get_fd_fn(handle, fsp, mem_ctx, blob_description, blob);
2355 int smb_vfs_call_sys_acl_set_file(struct vfs_handle_struct *handle,
2356 const char *name, SMB_ACL_TYPE_T acltype,
2359 VFS_FIND(sys_acl_set_file);
2360 return handle->fns->sys_acl_set_file_fn(handle, name, acltype, theacl);
2363 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
2364 struct files_struct *fsp, SMB_ACL_T theacl)
2366 VFS_FIND(sys_acl_set_fd);
2367 return handle->fns->sys_acl_set_fd_fn(handle, fsp, theacl);
2370 int smb_vfs_call_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
2373 VFS_FIND(sys_acl_delete_def_file);
2374 return handle->fns->sys_acl_delete_def_file_fn(handle, path);
2377 ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
2378 const char *path, const char *name, void *value,
2382 return handle->fns->getxattr_fn(handle, path, name, value, size);
2385 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
2386 struct files_struct *fsp, const char *name,
2387 void *value, size_t size)
2389 VFS_FIND(fgetxattr);
2390 return handle->fns->fgetxattr_fn(handle, fsp, name, value, size);
2393 ssize_t smb_vfs_call_listxattr(struct vfs_handle_struct *handle,
2394 const char *path, char *list, size_t size)
2396 VFS_FIND(listxattr);
2397 return handle->fns->listxattr_fn(handle, path, list, size);
2400 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
2401 struct files_struct *fsp, char *list,
2404 VFS_FIND(flistxattr);
2405 return handle->fns->flistxattr_fn(handle, fsp, list, size);
2408 int smb_vfs_call_removexattr(struct vfs_handle_struct *handle,
2409 const char *path, const char *name)
2411 VFS_FIND(removexattr);
2412 return handle->fns->removexattr_fn(handle, path, name);
2415 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
2416 struct files_struct *fsp, const char *name)
2418 VFS_FIND(fremovexattr);
2419 return handle->fns->fremovexattr_fn(handle, fsp, name);
2422 int smb_vfs_call_setxattr(struct vfs_handle_struct *handle, const char *path,
2423 const char *name, const void *value, size_t size,
2427 return handle->fns->setxattr_fn(handle, path, name, value, size, flags);
2430 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
2431 struct files_struct *fsp, const char *name,
2432 const void *value, size_t size, int flags)
2434 VFS_FIND(fsetxattr);
2435 return handle->fns->fsetxattr_fn(handle, fsp, name, value, size, flags);
2438 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
2439 struct files_struct *fsp)
2441 VFS_FIND(aio_force);
2442 return handle->fns->aio_force_fn(handle, fsp);
2445 bool smb_vfs_call_is_offline(struct vfs_handle_struct *handle,
2446 const struct smb_filename *fname,
2447 SMB_STRUCT_STAT *sbuf)
2449 VFS_FIND(is_offline);
2450 return handle->fns->is_offline_fn(handle, fname, sbuf);
2453 int smb_vfs_call_set_offline(struct vfs_handle_struct *handle,
2454 const struct smb_filename *fname)
2456 VFS_FIND(set_offline);
2457 return handle->fns->set_offline_fn(handle, fname);
2460 NTSTATUS smb_vfs_call_durable_cookie(struct vfs_handle_struct *handle,
2461 struct files_struct *fsp,
2462 TALLOC_CTX *mem_ctx,
2465 VFS_FIND(durable_cookie);
2466 return handle->fns->durable_cookie_fn(handle, fsp, mem_ctx, cookie);
2469 NTSTATUS smb_vfs_call_durable_disconnect(struct vfs_handle_struct *handle,
2470 struct files_struct *fsp,
2471 const DATA_BLOB old_cookie,
2472 TALLOC_CTX *mem_ctx,
2473 DATA_BLOB *new_cookie)
2475 VFS_FIND(durable_disconnect);
2476 return handle->fns->durable_disconnect_fn(handle, fsp, old_cookie,
2477 mem_ctx, new_cookie);
2480 NTSTATUS smb_vfs_call_durable_reconnect(struct vfs_handle_struct *handle,
2481 struct smb_request *smb1req,
2482 struct smbXsrv_open *op,
2483 const DATA_BLOB old_cookie,
2484 TALLOC_CTX *mem_ctx,
2485 struct files_struct **fsp,
2486 DATA_BLOB *new_cookie)
2488 VFS_FIND(durable_reconnect);
2489 return handle->fns->durable_reconnect_fn(handle, smb1req, op,
2490 old_cookie, mem_ctx, fsp,
2494 NTSTATUS smb_vfs_call_readdir_attr(struct vfs_handle_struct *handle,
2495 const struct smb_filename *fname,
2496 TALLOC_CTX *mem_ctx,
2497 struct readdir_attr_data **attr_data)
2499 VFS_FIND(readdir_attr);
2500 return handle->fns->readdir_attr_fn(handle, fname, mem_ctx, attr_data);