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 char *fname, const char *mask,
1456 uint32_t attributes)
1459 return handle->fns->opendir_fn(handle, fname, mask, attributes);
1462 DIR *smb_vfs_call_fdopendir(struct vfs_handle_struct *handle,
1463 struct files_struct *fsp,
1465 uint32_t attributes)
1467 VFS_FIND(fdopendir);
1468 return handle->fns->fdopendir_fn(handle, fsp, mask, attributes);
1471 struct dirent *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
1473 SMB_STRUCT_STAT *sbuf)
1476 return handle->fns->readdir_fn(handle, dirp, sbuf);
1479 void smb_vfs_call_seekdir(struct vfs_handle_struct *handle,
1480 DIR *dirp, long offset)
1483 handle->fns->seekdir_fn(handle, dirp, offset);
1486 long smb_vfs_call_telldir(struct vfs_handle_struct *handle,
1490 return handle->fns->telldir_fn(handle, dirp);
1493 void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
1496 VFS_FIND(rewind_dir);
1497 handle->fns->rewind_dir_fn(handle, dirp);
1500 int smb_vfs_call_mkdir(struct vfs_handle_struct *handle,
1501 const struct smb_filename *smb_fname,
1505 return handle->fns->mkdir_fn(handle, smb_fname, mode);
1508 int smb_vfs_call_rmdir(struct vfs_handle_struct *handle,
1509 const struct smb_filename *smb_fname)
1512 return handle->fns->rmdir_fn(handle, smb_fname);
1515 int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
1519 return handle->fns->closedir_fn(handle, dir);
1522 void smb_vfs_call_init_search_op(struct vfs_handle_struct *handle,
1525 VFS_FIND(init_search_op);
1526 handle->fns->init_search_op_fn(handle, dirp);
1529 int smb_vfs_call_open(struct vfs_handle_struct *handle,
1530 struct smb_filename *smb_fname, struct files_struct *fsp,
1531 int flags, mode_t mode)
1534 return handle->fns->open_fn(handle, smb_fname, fsp, flags, mode);
1537 NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
1538 struct smb_request *req,
1539 uint16_t root_dir_fid,
1540 struct smb_filename *smb_fname,
1541 uint32_t access_mask,
1542 uint32_t share_access,
1543 uint32_t create_disposition,
1544 uint32_t create_options,
1545 uint32_t file_attributes,
1546 uint32_t oplock_request,
1547 struct smb2_lease *lease,
1548 uint64_t allocation_size,
1549 uint32_t private_flags,
1550 struct security_descriptor *sd,
1551 struct ea_list *ea_list,
1552 files_struct **result,
1554 const struct smb2_create_blobs *in_context_blobs,
1555 struct smb2_create_blobs *out_context_blobs)
1557 VFS_FIND(create_file);
1558 return handle->fns->create_file_fn(
1559 handle, req, root_dir_fid, smb_fname, access_mask,
1560 share_access, create_disposition, create_options,
1561 file_attributes, oplock_request, lease, allocation_size,
1562 private_flags, sd, ea_list,
1563 result, pinfo, in_context_blobs, out_context_blobs);
1566 int smb_vfs_call_close(struct vfs_handle_struct *handle,
1567 struct files_struct *fsp)
1570 return handle->fns->close_fn(handle, fsp);
1573 ssize_t smb_vfs_call_read(struct vfs_handle_struct *handle,
1574 struct files_struct *fsp, void *data, size_t n)
1577 return handle->fns->read_fn(handle, fsp, data, n);
1580 ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
1581 struct files_struct *fsp, void *data, size_t n,
1585 return handle->fns->pread_fn(handle, fsp, data, n, offset);
1588 struct smb_vfs_call_pread_state {
1589 ssize_t (*recv_fn)(struct tevent_req *req, int *err);
1593 static void smb_vfs_call_pread_done(struct tevent_req *subreq);
1595 struct tevent_req *smb_vfs_call_pread_send(struct vfs_handle_struct *handle,
1596 TALLOC_CTX *mem_ctx,
1597 struct tevent_context *ev,
1598 struct files_struct *fsp,
1600 size_t n, off_t offset)
1602 struct tevent_req *req, *subreq;
1603 struct smb_vfs_call_pread_state *state;
1605 req = tevent_req_create(mem_ctx, &state,
1606 struct smb_vfs_call_pread_state);
1610 VFS_FIND(pread_send);
1611 state->recv_fn = handle->fns->pread_recv_fn;
1613 subreq = handle->fns->pread_send_fn(handle, state, ev, fsp, data, n,
1615 if (tevent_req_nomem(subreq, req)) {
1616 return tevent_req_post(req, ev);
1618 tevent_req_set_callback(subreq, smb_vfs_call_pread_done, req);
1622 static void smb_vfs_call_pread_done(struct tevent_req *subreq)
1624 struct tevent_req *req = tevent_req_callback_data(
1625 subreq, struct tevent_req);
1626 struct smb_vfs_call_pread_state *state = tevent_req_data(
1627 req, struct smb_vfs_call_pread_state);
1630 state->retval = state->recv_fn(subreq, &err);
1631 TALLOC_FREE(subreq);
1632 if (state->retval == -1) {
1633 tevent_req_error(req, err);
1636 tevent_req_done(req);
1639 ssize_t SMB_VFS_PREAD_RECV(struct tevent_req *req, int *perrno)
1641 struct smb_vfs_call_pread_state *state = tevent_req_data(
1642 req, struct smb_vfs_call_pread_state);
1645 if (tevent_req_is_unix_error(req, &err)) {
1649 return state->retval;
1652 ssize_t smb_vfs_call_write(struct vfs_handle_struct *handle,
1653 struct files_struct *fsp, const void *data,
1657 return handle->fns->write_fn(handle, fsp, data, n);
1660 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
1661 struct files_struct *fsp, const void *data,
1662 size_t n, off_t offset)
1665 return handle->fns->pwrite_fn(handle, fsp, data, n, offset);
1668 struct smb_vfs_call_pwrite_state {
1669 ssize_t (*recv_fn)(struct tevent_req *req, int *err);
1673 static void smb_vfs_call_pwrite_done(struct tevent_req *subreq);
1675 struct tevent_req *smb_vfs_call_pwrite_send(struct vfs_handle_struct *handle,
1676 TALLOC_CTX *mem_ctx,
1677 struct tevent_context *ev,
1678 struct files_struct *fsp,
1680 size_t n, off_t offset)
1682 struct tevent_req *req, *subreq;
1683 struct smb_vfs_call_pwrite_state *state;
1685 req = tevent_req_create(mem_ctx, &state,
1686 struct smb_vfs_call_pwrite_state);
1690 VFS_FIND(pwrite_send);
1691 state->recv_fn = handle->fns->pwrite_recv_fn;
1693 subreq = handle->fns->pwrite_send_fn(handle, state, ev, fsp, data, n,
1695 if (tevent_req_nomem(subreq, req)) {
1696 return tevent_req_post(req, ev);
1698 tevent_req_set_callback(subreq, smb_vfs_call_pwrite_done, req);
1702 static void smb_vfs_call_pwrite_done(struct tevent_req *subreq)
1704 struct tevent_req *req = tevent_req_callback_data(
1705 subreq, struct tevent_req);
1706 struct smb_vfs_call_pwrite_state *state = tevent_req_data(
1707 req, struct smb_vfs_call_pwrite_state);
1710 state->retval = state->recv_fn(subreq, &err);
1711 TALLOC_FREE(subreq);
1712 if (state->retval == -1) {
1713 tevent_req_error(req, err);
1716 tevent_req_done(req);
1719 ssize_t SMB_VFS_PWRITE_RECV(struct tevent_req *req, int *perrno)
1721 struct smb_vfs_call_pwrite_state *state = tevent_req_data(
1722 req, struct smb_vfs_call_pwrite_state);
1725 if (tevent_req_is_unix_error(req, &err)) {
1729 return state->retval;
1732 off_t smb_vfs_call_lseek(struct vfs_handle_struct *handle,
1733 struct files_struct *fsp, off_t offset,
1737 return handle->fns->lseek_fn(handle, fsp, offset, whence);
1740 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
1741 files_struct *fromfsp, const DATA_BLOB *header,
1742 off_t offset, size_t count)
1745 return handle->fns->sendfile_fn(handle, tofd, fromfsp, header, offset,
1749 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
1750 files_struct *tofsp, off_t offset,
1754 return handle->fns->recvfile_fn(handle, fromfd, tofsp, offset, count);
1757 int smb_vfs_call_rename(struct vfs_handle_struct *handle,
1758 const struct smb_filename *smb_fname_src,
1759 const struct smb_filename *smb_fname_dst)
1762 return handle->fns->rename_fn(handle, smb_fname_src, smb_fname_dst);
1765 int smb_vfs_call_fsync(struct vfs_handle_struct *handle,
1766 struct files_struct *fsp)
1769 return handle->fns->fsync_fn(handle, fsp);
1772 struct smb_vfs_call_fsync_state {
1773 int (*recv_fn)(struct tevent_req *req, int *err);
1777 static void smb_vfs_call_fsync_done(struct tevent_req *subreq);
1779 struct tevent_req *smb_vfs_call_fsync_send(struct vfs_handle_struct *handle,
1780 TALLOC_CTX *mem_ctx,
1781 struct tevent_context *ev,
1782 struct files_struct *fsp)
1784 struct tevent_req *req, *subreq;
1785 struct smb_vfs_call_fsync_state *state;
1787 req = tevent_req_create(mem_ctx, &state,
1788 struct smb_vfs_call_fsync_state);
1792 VFS_FIND(fsync_send);
1793 state->recv_fn = handle->fns->fsync_recv_fn;
1795 subreq = handle->fns->fsync_send_fn(handle, state, ev, fsp);
1796 if (tevent_req_nomem(subreq, req)) {
1797 return tevent_req_post(req, ev);
1799 tevent_req_set_callback(subreq, smb_vfs_call_fsync_done, req);
1803 static void smb_vfs_call_fsync_done(struct tevent_req *subreq)
1805 struct tevent_req *req = tevent_req_callback_data(
1806 subreq, struct tevent_req);
1807 struct smb_vfs_call_fsync_state *state = tevent_req_data(
1808 req, struct smb_vfs_call_fsync_state);
1811 state->retval = state->recv_fn(subreq, &err);
1812 TALLOC_FREE(subreq);
1813 if (state->retval == -1) {
1814 tevent_req_error(req, err);
1817 tevent_req_done(req);
1820 int SMB_VFS_FSYNC_RECV(struct tevent_req *req, int *perrno)
1822 struct smb_vfs_call_fsync_state *state = tevent_req_data(
1823 req, struct smb_vfs_call_fsync_state);
1826 if (tevent_req_is_unix_error(req, &err)) {
1830 return state->retval;
1834 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
1835 struct smb_filename *smb_fname)
1838 return handle->fns->stat_fn(handle, smb_fname);
1841 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
1842 struct files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1845 return handle->fns->fstat_fn(handle, fsp, sbuf);
1848 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
1849 struct smb_filename *smb_filename)
1852 return handle->fns->lstat_fn(handle, smb_filename);
1855 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
1856 struct files_struct *fsp,
1857 const SMB_STRUCT_STAT *sbuf)
1859 VFS_FIND(get_alloc_size);
1860 return handle->fns->get_alloc_size_fn(handle, fsp, sbuf);
1863 int smb_vfs_call_unlink(struct vfs_handle_struct *handle,
1864 const struct smb_filename *smb_fname)
1867 return handle->fns->unlink_fn(handle, smb_fname);
1870 int smb_vfs_call_chmod(struct vfs_handle_struct *handle, const char *path,
1874 return handle->fns->chmod_fn(handle, path, mode);
1877 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
1878 struct files_struct *fsp, mode_t mode)
1881 return handle->fns->fchmod_fn(handle, fsp, mode);
1884 int smb_vfs_call_chown(struct vfs_handle_struct *handle, const char *path,
1885 uid_t uid, gid_t gid)
1888 return handle->fns->chown_fn(handle, path, uid, gid);
1891 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
1892 struct files_struct *fsp, uid_t uid, gid_t gid)
1895 return handle->fns->fchown_fn(handle, fsp, uid, gid);
1898 int smb_vfs_call_lchown(struct vfs_handle_struct *handle, const char *path,
1899 uid_t uid, gid_t gid)
1902 return handle->fns->lchown_fn(handle, path, uid, gid);
1905 NTSTATUS vfs_chown_fsp(files_struct *fsp, uid_t uid, gid_t gid)
1908 bool as_root = false;
1910 char *saved_dir = NULL;
1911 char *parent_dir = NULL;
1914 if (fsp->fh->fd != -1) {
1916 ret = SMB_VFS_FCHOWN(fsp, uid, gid);
1918 return NT_STATUS_OK;
1920 if (ret == -1 && errno != ENOSYS) {
1921 return map_nt_error_from_unix(errno);
1925 as_root = (geteuid() == 0);
1929 * We are being asked to chown as root. Make
1930 * sure we chdir() into the path to pin it,
1931 * and always act using lchown to ensure we
1932 * don't deref any symbolic links.
1934 const char *final_component = NULL;
1935 struct smb_filename local_fname;
1937 saved_dir = vfs_GetWd(talloc_tos(),fsp->conn);
1939 status = map_nt_error_from_unix(errno);
1940 DEBUG(0,("vfs_chown_fsp: failed to get "
1941 "current working directory. Error was %s\n",
1946 if (!parent_dirname(talloc_tos(),
1947 fsp->fsp_name->base_name,
1949 &final_component)) {
1950 return NT_STATUS_NO_MEMORY;
1953 /* cd into the parent dir to pin it. */
1954 ret = vfs_ChDir(fsp->conn, parent_dir);
1956 return map_nt_error_from_unix(errno);
1959 ZERO_STRUCT(local_fname);
1960 local_fname.base_name = discard_const_p(char, final_component);
1962 /* Must use lstat here. */
1963 ret = SMB_VFS_LSTAT(fsp->conn, &local_fname);
1965 status = map_nt_error_from_unix(errno);
1969 /* Ensure it matches the fsp stat. */
1970 if (!check_same_stat(&local_fname.st, &fsp->fsp_name->st)) {
1971 status = NT_STATUS_ACCESS_DENIED;
1974 path = final_component;
1976 path = fsp->fsp_name->base_name;
1979 if ((fsp->posix_flags & FSP_POSIX_FLAGS_OPEN) || as_root) {
1980 ret = SMB_VFS_LCHOWN(fsp->conn,
1984 ret = SMB_VFS_CHOWN(fsp->conn,
1990 status = NT_STATUS_OK;
1992 status = map_nt_error_from_unix(errno);
1998 vfs_ChDir(fsp->conn,saved_dir);
1999 TALLOC_FREE(saved_dir);
2000 TALLOC_FREE(parent_dir);
2005 int smb_vfs_call_chdir(struct vfs_handle_struct *handle, const char *path)
2008 return handle->fns->chdir_fn(handle, path);
2011 char *smb_vfs_call_getwd(struct vfs_handle_struct *handle)
2014 return handle->fns->getwd_fn(handle);
2017 int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
2018 const struct smb_filename *smb_fname,
2019 struct smb_file_time *ft)
2022 return handle->fns->ntimes_fn(handle, smb_fname, ft);
2025 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
2026 struct files_struct *fsp, off_t offset)
2028 VFS_FIND(ftruncate);
2029 return handle->fns->ftruncate_fn(handle, fsp, offset);
2032 int smb_vfs_call_fallocate(struct vfs_handle_struct *handle,
2033 struct files_struct *fsp,
2038 VFS_FIND(fallocate);
2039 return handle->fns->fallocate_fn(handle, fsp, mode, offset, len);
2042 int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
2043 struct files_struct *fsp, uint32_t share_mode,
2044 uint32_t access_mask)
2046 VFS_FIND(kernel_flock);
2047 return handle->fns->kernel_flock_fn(handle, fsp, share_mode,
2051 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
2052 struct files_struct *fsp, int leasetype)
2054 VFS_FIND(linux_setlease);
2055 return handle->fns->linux_setlease_fn(handle, fsp, leasetype);
2058 int smb_vfs_call_symlink(struct vfs_handle_struct *handle, const char *oldpath,
2059 const char *newpath)
2062 return handle->fns->symlink_fn(handle, oldpath, newpath);
2065 int smb_vfs_call_readlink(struct vfs_handle_struct *handle,
2066 const char *path, char *buf, size_t bufsiz)
2069 return handle->fns->readlink_fn(handle, path, buf, bufsiz);
2072 int smb_vfs_call_link(struct vfs_handle_struct *handle, const char *oldpath,
2073 const char *newpath)
2076 return handle->fns->link_fn(handle, oldpath, newpath);
2079 int smb_vfs_call_mknod(struct vfs_handle_struct *handle, const char *path,
2080 mode_t mode, SMB_DEV_T dev)
2083 return handle->fns->mknod_fn(handle, path, mode, dev);
2086 char *smb_vfs_call_realpath(struct vfs_handle_struct *handle, const char *path)
2089 return handle->fns->realpath_fn(handle, path);
2092 int smb_vfs_call_chflags(struct vfs_handle_struct *handle, const char *path,
2096 return handle->fns->chflags_fn(handle, path, flags);
2099 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
2100 const SMB_STRUCT_STAT *sbuf)
2102 VFS_FIND(file_id_create);
2103 return handle->fns->file_id_create_fn(handle, sbuf);
2106 NTSTATUS smb_vfs_call_streaminfo(struct vfs_handle_struct *handle,
2107 struct files_struct *fsp,
2109 TALLOC_CTX *mem_ctx,
2110 unsigned int *num_streams,
2111 struct stream_struct **streams)
2113 VFS_FIND(streaminfo);
2114 return handle->fns->streaminfo_fn(handle, fsp, fname, mem_ctx,
2115 num_streams, streams);
2118 int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
2119 const char *path, const char *name,
2120 TALLOC_CTX *mem_ctx, char **found_name)
2122 VFS_FIND(get_real_filename);
2123 return handle->fns->get_real_filename_fn(handle, path, name, mem_ctx,
2127 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
2128 const char *filename)
2130 VFS_FIND(connectpath);
2131 return handle->fns->connectpath_fn(handle, filename);
2134 bool smb_vfs_call_strict_lock(struct vfs_handle_struct *handle,
2135 struct files_struct *fsp,
2136 struct lock_struct *plock)
2138 VFS_FIND(strict_lock);
2139 return handle->fns->strict_lock_fn(handle, fsp, plock);
2142 void smb_vfs_call_strict_unlock(struct vfs_handle_struct *handle,
2143 struct files_struct *fsp,
2144 struct lock_struct *plock)
2146 VFS_FIND(strict_unlock);
2147 handle->fns->strict_unlock_fn(handle, fsp, plock);
2150 NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
2152 enum vfs_translate_direction direction,
2153 TALLOC_CTX *mem_ctx,
2156 VFS_FIND(translate_name);
2157 return handle->fns->translate_name_fn(handle, name, direction, mem_ctx,
2161 NTSTATUS smb_vfs_call_fsctl(struct vfs_handle_struct *handle,
2162 struct files_struct *fsp,
2166 const uint8_t *in_data,
2169 uint32_t max_out_len,
2173 return handle->fns->fsctl_fn(handle, fsp, ctx, function, req_flags,
2174 in_data, in_len, out_data, max_out_len,
2178 struct tevent_req *smb_vfs_call_copy_chunk_send(struct vfs_handle_struct *handle,
2179 TALLOC_CTX *mem_ctx,
2180 struct tevent_context *ev,
2181 struct files_struct *src_fsp,
2183 struct files_struct *dest_fsp,
2187 VFS_FIND(copy_chunk_send);
2188 return handle->fns->copy_chunk_send_fn(handle, mem_ctx, ev, src_fsp,
2189 src_off, dest_fsp, dest_off, num);
2192 NTSTATUS smb_vfs_call_copy_chunk_recv(struct vfs_handle_struct *handle,
2193 struct tevent_req *req,
2196 VFS_FIND(copy_chunk_recv);
2197 return handle->fns->copy_chunk_recv_fn(handle, req, copied);
2200 NTSTATUS smb_vfs_call_get_compression(vfs_handle_struct *handle,
2201 TALLOC_CTX *mem_ctx,
2202 struct files_struct *fsp,
2203 struct smb_filename *smb_fname,
2204 uint16_t *_compression_fmt)
2206 VFS_FIND(get_compression);
2207 return handle->fns->get_compression_fn(handle, mem_ctx, fsp, smb_fname,
2211 NTSTATUS smb_vfs_call_set_compression(vfs_handle_struct *handle,
2212 TALLOC_CTX *mem_ctx,
2213 struct files_struct *fsp,
2214 uint16_t compression_fmt)
2216 VFS_FIND(set_compression);
2217 return handle->fns->set_compression_fn(handle, mem_ctx, fsp,
2221 NTSTATUS smb_vfs_call_snap_check_path(vfs_handle_struct *handle,
2222 TALLOC_CTX *mem_ctx,
2223 const char *service_path,
2226 VFS_FIND(snap_check_path);
2227 return handle->fns->snap_check_path_fn(handle, mem_ctx, service_path,
2231 NTSTATUS smb_vfs_call_snap_create(struct vfs_handle_struct *handle,
2232 TALLOC_CTX *mem_ctx,
2233 const char *base_volume,
2239 VFS_FIND(snap_create);
2240 return handle->fns->snap_create_fn(handle, mem_ctx, base_volume, tstamp,
2241 rw, base_path, snap_path);
2244 NTSTATUS smb_vfs_call_snap_delete(struct vfs_handle_struct *handle,
2245 TALLOC_CTX *mem_ctx,
2249 VFS_FIND(snap_delete);
2250 return handle->fns->snap_delete_fn(handle, mem_ctx, base_path,
2254 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
2255 struct files_struct *fsp,
2256 uint32_t security_info,
2257 TALLOC_CTX *mem_ctx,
2258 struct security_descriptor **ppdesc)
2260 VFS_FIND(fget_nt_acl);
2261 return handle->fns->fget_nt_acl_fn(handle, fsp, security_info,
2265 NTSTATUS smb_vfs_call_get_nt_acl(struct vfs_handle_struct *handle,
2266 const struct smb_filename *smb_fname,
2267 uint32_t security_info,
2268 TALLOC_CTX *mem_ctx,
2269 struct security_descriptor **ppdesc)
2271 VFS_FIND(get_nt_acl);
2272 return handle->fns->get_nt_acl_fn(handle,
2279 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
2280 struct files_struct *fsp,
2281 uint32_t security_info_sent,
2282 const struct security_descriptor *psd)
2284 VFS_FIND(fset_nt_acl);
2285 return handle->fns->fset_nt_acl_fn(handle, fsp, security_info_sent,
2289 NTSTATUS smb_vfs_call_audit_file(struct vfs_handle_struct *handle,
2290 struct smb_filename *file,
2291 struct security_acl *sacl,
2292 uint32_t access_requested,
2293 uint32_t access_denied)
2295 VFS_FIND(audit_file);
2296 return handle->fns->audit_file_fn(handle,
2303 int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle, const char *name,
2306 VFS_FIND(chmod_acl);
2307 return handle->fns->chmod_acl_fn(handle, name, mode);
2310 int smb_vfs_call_fchmod_acl(struct vfs_handle_struct *handle,
2311 struct files_struct *fsp, mode_t mode)
2313 VFS_FIND(fchmod_acl);
2314 return handle->fns->fchmod_acl_fn(handle, fsp, mode);
2317 SMB_ACL_T smb_vfs_call_sys_acl_get_file(struct vfs_handle_struct *handle,
2319 SMB_ACL_TYPE_T type,
2320 TALLOC_CTX *mem_ctx)
2322 VFS_FIND(sys_acl_get_file);
2323 return handle->fns->sys_acl_get_file_fn(handle, path_p, type, mem_ctx);
2326 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
2327 struct files_struct *fsp,
2328 TALLOC_CTX *mem_ctx)
2330 VFS_FIND(sys_acl_get_fd);
2331 return handle->fns->sys_acl_get_fd_fn(handle, fsp, mem_ctx);
2334 int smb_vfs_call_sys_acl_blob_get_file(struct vfs_handle_struct *handle,
2336 TALLOC_CTX *mem_ctx,
2337 char **blob_description,
2340 VFS_FIND(sys_acl_blob_get_file);
2341 return handle->fns->sys_acl_blob_get_file_fn(handle, path_p, mem_ctx, blob_description, blob);
2344 int smb_vfs_call_sys_acl_blob_get_fd(struct vfs_handle_struct *handle,
2345 struct files_struct *fsp,
2346 TALLOC_CTX *mem_ctx,
2347 char **blob_description,
2350 VFS_FIND(sys_acl_blob_get_fd);
2351 return handle->fns->sys_acl_blob_get_fd_fn(handle, fsp, mem_ctx, blob_description, blob);
2354 int smb_vfs_call_sys_acl_set_file(struct vfs_handle_struct *handle,
2355 const char *name, SMB_ACL_TYPE_T acltype,
2358 VFS_FIND(sys_acl_set_file);
2359 return handle->fns->sys_acl_set_file_fn(handle, name, acltype, theacl);
2362 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
2363 struct files_struct *fsp, SMB_ACL_T theacl)
2365 VFS_FIND(sys_acl_set_fd);
2366 return handle->fns->sys_acl_set_fd_fn(handle, fsp, theacl);
2369 int smb_vfs_call_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
2372 VFS_FIND(sys_acl_delete_def_file);
2373 return handle->fns->sys_acl_delete_def_file_fn(handle, path);
2376 ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
2377 const char *path, const char *name, void *value,
2381 return handle->fns->getxattr_fn(handle, path, name, value, size);
2384 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
2385 struct files_struct *fsp, const char *name,
2386 void *value, size_t size)
2388 VFS_FIND(fgetxattr);
2389 return handle->fns->fgetxattr_fn(handle, fsp, name, value, size);
2392 ssize_t smb_vfs_call_listxattr(struct vfs_handle_struct *handle,
2393 const char *path, char *list, size_t size)
2395 VFS_FIND(listxattr);
2396 return handle->fns->listxattr_fn(handle, path, list, size);
2399 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
2400 struct files_struct *fsp, char *list,
2403 VFS_FIND(flistxattr);
2404 return handle->fns->flistxattr_fn(handle, fsp, list, size);
2407 int smb_vfs_call_removexattr(struct vfs_handle_struct *handle,
2408 const char *path, const char *name)
2410 VFS_FIND(removexattr);
2411 return handle->fns->removexattr_fn(handle, path, name);
2414 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
2415 struct files_struct *fsp, const char *name)
2417 VFS_FIND(fremovexattr);
2418 return handle->fns->fremovexattr_fn(handle, fsp, name);
2421 int smb_vfs_call_setxattr(struct vfs_handle_struct *handle, const char *path,
2422 const char *name, const void *value, size_t size,
2426 return handle->fns->setxattr_fn(handle, path, name, value, size, flags);
2429 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
2430 struct files_struct *fsp, const char *name,
2431 const void *value, size_t size, int flags)
2433 VFS_FIND(fsetxattr);
2434 return handle->fns->fsetxattr_fn(handle, fsp, name, value, size, flags);
2437 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
2438 struct files_struct *fsp)
2440 VFS_FIND(aio_force);
2441 return handle->fns->aio_force_fn(handle, fsp);
2444 bool smb_vfs_call_is_offline(struct vfs_handle_struct *handle,
2445 const struct smb_filename *fname,
2446 SMB_STRUCT_STAT *sbuf)
2448 VFS_FIND(is_offline);
2449 return handle->fns->is_offline_fn(handle, fname, sbuf);
2452 int smb_vfs_call_set_offline(struct vfs_handle_struct *handle,
2453 const struct smb_filename *fname)
2455 VFS_FIND(set_offline);
2456 return handle->fns->set_offline_fn(handle, fname);
2459 NTSTATUS smb_vfs_call_durable_cookie(struct vfs_handle_struct *handle,
2460 struct files_struct *fsp,
2461 TALLOC_CTX *mem_ctx,
2464 VFS_FIND(durable_cookie);
2465 return handle->fns->durable_cookie_fn(handle, fsp, mem_ctx, cookie);
2468 NTSTATUS smb_vfs_call_durable_disconnect(struct vfs_handle_struct *handle,
2469 struct files_struct *fsp,
2470 const DATA_BLOB old_cookie,
2471 TALLOC_CTX *mem_ctx,
2472 DATA_BLOB *new_cookie)
2474 VFS_FIND(durable_disconnect);
2475 return handle->fns->durable_disconnect_fn(handle, fsp, old_cookie,
2476 mem_ctx, new_cookie);
2479 NTSTATUS smb_vfs_call_durable_reconnect(struct vfs_handle_struct *handle,
2480 struct smb_request *smb1req,
2481 struct smbXsrv_open *op,
2482 const DATA_BLOB old_cookie,
2483 TALLOC_CTX *mem_ctx,
2484 struct files_struct **fsp,
2485 DATA_BLOB *new_cookie)
2487 VFS_FIND(durable_reconnect);
2488 return handle->fns->durable_reconnect_fn(handle, smb1req, op,
2489 old_cookie, mem_ctx, fsp,
2493 NTSTATUS smb_vfs_call_readdir_attr(struct vfs_handle_struct *handle,
2494 const struct smb_filename *fname,
2495 TALLOC_CTX *mem_ctx,
2496 struct readdir_attr_data **attr_data)
2498 VFS_FIND(readdir_attr);
2499 return handle->fns->readdir_attr_fn(handle, fname, mem_ctx, attr_data);