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,
1368 const struct smb_filename *smb_fname,
1369 TALLOC_CTX *mem_ctx,
1370 unsigned int *num_streams,
1371 struct stream_struct **streams)
1375 return SMB_VFS_STREAMINFO(conn,
1384 generate a file_id from a stat structure
1386 struct file_id vfs_file_id_from_sbuf(connection_struct *conn, const SMB_STRUCT_STAT *sbuf)
1388 return SMB_VFS_FILE_ID_CREATE(conn, sbuf);
1391 int smb_vfs_call_connect(struct vfs_handle_struct *handle,
1392 const char *service, const char *user)
1395 return handle->fns->connect_fn(handle, service, user);
1398 void smb_vfs_call_disconnect(struct vfs_handle_struct *handle)
1400 VFS_FIND(disconnect);
1401 handle->fns->disconnect_fn(handle);
1404 uint64_t smb_vfs_call_disk_free(struct vfs_handle_struct *handle,
1405 const char *path, uint64_t *bsize,
1406 uint64_t *dfree, uint64_t *dsize)
1408 VFS_FIND(disk_free);
1409 return handle->fns->disk_free_fn(handle, path, bsize, dfree, dsize);
1412 int smb_vfs_call_get_quota(struct vfs_handle_struct *handle, const char *path,
1413 enum SMB_QUOTA_TYPE qtype, unid_t id,
1416 VFS_FIND(get_quota);
1417 return handle->fns->get_quota_fn(handle, path, qtype, id, qt);
1420 int smb_vfs_call_set_quota(struct vfs_handle_struct *handle,
1421 enum SMB_QUOTA_TYPE qtype, unid_t id,
1424 VFS_FIND(set_quota);
1425 return handle->fns->set_quota_fn(handle, qtype, id, qt);
1428 int smb_vfs_call_get_shadow_copy_data(struct vfs_handle_struct *handle,
1429 struct files_struct *fsp,
1430 struct shadow_copy_data *shadow_copy_data,
1433 VFS_FIND(get_shadow_copy_data);
1434 return handle->fns->get_shadow_copy_data_fn(handle, fsp,
1438 int smb_vfs_call_statvfs(struct vfs_handle_struct *handle, const char *path,
1439 struct vfs_statvfs_struct *statbuf)
1442 return handle->fns->statvfs_fn(handle, path, statbuf);
1445 uint32_t smb_vfs_call_fs_capabilities(struct vfs_handle_struct *handle,
1446 enum timestamp_set_resolution *p_ts_res)
1448 VFS_FIND(fs_capabilities);
1449 return handle->fns->fs_capabilities_fn(handle, p_ts_res);
1452 NTSTATUS smb_vfs_call_get_dfs_referrals(struct vfs_handle_struct *handle,
1453 struct dfs_GetDFSReferral *r)
1455 VFS_FIND(get_dfs_referrals);
1456 return handle->fns->get_dfs_referrals_fn(handle, r);
1459 DIR *smb_vfs_call_opendir(struct vfs_handle_struct *handle,
1460 const struct smb_filename *smb_fname,
1462 uint32_t attributes)
1465 return handle->fns->opendir_fn(handle, smb_fname, mask, attributes);
1468 DIR *smb_vfs_call_fdopendir(struct vfs_handle_struct *handle,
1469 struct files_struct *fsp,
1471 uint32_t attributes)
1473 VFS_FIND(fdopendir);
1474 return handle->fns->fdopendir_fn(handle, fsp, mask, attributes);
1477 struct dirent *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
1479 SMB_STRUCT_STAT *sbuf)
1482 return handle->fns->readdir_fn(handle, dirp, sbuf);
1485 void smb_vfs_call_seekdir(struct vfs_handle_struct *handle,
1486 DIR *dirp, long offset)
1489 handle->fns->seekdir_fn(handle, dirp, offset);
1492 long smb_vfs_call_telldir(struct vfs_handle_struct *handle,
1496 return handle->fns->telldir_fn(handle, dirp);
1499 void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
1502 VFS_FIND(rewind_dir);
1503 handle->fns->rewind_dir_fn(handle, dirp);
1506 int smb_vfs_call_mkdir(struct vfs_handle_struct *handle,
1507 const struct smb_filename *smb_fname,
1511 return handle->fns->mkdir_fn(handle, smb_fname, mode);
1514 int smb_vfs_call_rmdir(struct vfs_handle_struct *handle,
1515 const struct smb_filename *smb_fname)
1518 return handle->fns->rmdir_fn(handle, smb_fname);
1521 int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
1525 return handle->fns->closedir_fn(handle, dir);
1528 void smb_vfs_call_init_search_op(struct vfs_handle_struct *handle,
1531 VFS_FIND(init_search_op);
1532 handle->fns->init_search_op_fn(handle, dirp);
1535 int smb_vfs_call_open(struct vfs_handle_struct *handle,
1536 struct smb_filename *smb_fname, struct files_struct *fsp,
1537 int flags, mode_t mode)
1540 return handle->fns->open_fn(handle, smb_fname, fsp, flags, mode);
1543 NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
1544 struct smb_request *req,
1545 uint16_t root_dir_fid,
1546 struct smb_filename *smb_fname,
1547 uint32_t access_mask,
1548 uint32_t share_access,
1549 uint32_t create_disposition,
1550 uint32_t create_options,
1551 uint32_t file_attributes,
1552 uint32_t oplock_request,
1553 struct smb2_lease *lease,
1554 uint64_t allocation_size,
1555 uint32_t private_flags,
1556 struct security_descriptor *sd,
1557 struct ea_list *ea_list,
1558 files_struct **result,
1560 const struct smb2_create_blobs *in_context_blobs,
1561 struct smb2_create_blobs *out_context_blobs)
1563 VFS_FIND(create_file);
1564 return handle->fns->create_file_fn(
1565 handle, req, root_dir_fid, smb_fname, access_mask,
1566 share_access, create_disposition, create_options,
1567 file_attributes, oplock_request, lease, allocation_size,
1568 private_flags, sd, ea_list,
1569 result, pinfo, in_context_blobs, out_context_blobs);
1572 int smb_vfs_call_close(struct vfs_handle_struct *handle,
1573 struct files_struct *fsp)
1576 return handle->fns->close_fn(handle, fsp);
1579 ssize_t smb_vfs_call_read(struct vfs_handle_struct *handle,
1580 struct files_struct *fsp, void *data, size_t n)
1583 return handle->fns->read_fn(handle, fsp, data, n);
1586 ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
1587 struct files_struct *fsp, void *data, size_t n,
1591 return handle->fns->pread_fn(handle, fsp, data, n, offset);
1594 struct smb_vfs_call_pread_state {
1595 ssize_t (*recv_fn)(struct tevent_req *req, struct vfs_aio_state *vfs_aio_state);
1597 struct vfs_aio_state vfs_aio_state;
1600 static void smb_vfs_call_pread_done(struct tevent_req *subreq);
1602 struct tevent_req *smb_vfs_call_pread_send(struct vfs_handle_struct *handle,
1603 TALLOC_CTX *mem_ctx,
1604 struct tevent_context *ev,
1605 struct files_struct *fsp,
1607 size_t n, off_t offset)
1609 struct tevent_req *req, *subreq;
1610 struct smb_vfs_call_pread_state *state;
1612 req = tevent_req_create(mem_ctx, &state,
1613 struct smb_vfs_call_pread_state);
1617 VFS_FIND(pread_send);
1618 state->recv_fn = handle->fns->pread_recv_fn;
1620 subreq = handle->fns->pread_send_fn(handle, state, ev, fsp, data, n,
1622 if (tevent_req_nomem(subreq, req)) {
1623 return tevent_req_post(req, ev);
1625 tevent_req_set_callback(subreq, smb_vfs_call_pread_done, req);
1629 static void smb_vfs_call_pread_done(struct tevent_req *subreq)
1631 struct tevent_req *req = tevent_req_callback_data(
1632 subreq, struct tevent_req);
1633 struct smb_vfs_call_pread_state *state = tevent_req_data(
1634 req, struct smb_vfs_call_pread_state);
1636 state->retval = state->recv_fn(subreq, &state->vfs_aio_state);
1637 TALLOC_FREE(subreq);
1638 if (state->retval == -1) {
1639 tevent_req_error(req, state->vfs_aio_state.error);
1642 tevent_req_done(req);
1645 ssize_t SMB_VFS_PREAD_RECV(struct tevent_req *req,
1646 struct vfs_aio_state *vfs_aio_state)
1648 struct smb_vfs_call_pread_state *state = tevent_req_data(
1649 req, struct smb_vfs_call_pread_state);
1651 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1654 *vfs_aio_state = state->vfs_aio_state;
1655 return state->retval;
1658 ssize_t smb_vfs_call_write(struct vfs_handle_struct *handle,
1659 struct files_struct *fsp, const void *data,
1663 return handle->fns->write_fn(handle, fsp, data, n);
1666 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
1667 struct files_struct *fsp, const void *data,
1668 size_t n, off_t offset)
1671 return handle->fns->pwrite_fn(handle, fsp, data, n, offset);
1674 struct smb_vfs_call_pwrite_state {
1675 ssize_t (*recv_fn)(struct tevent_req *req, struct vfs_aio_state *vfs_aio_state);
1677 struct vfs_aio_state vfs_aio_state;
1680 static void smb_vfs_call_pwrite_done(struct tevent_req *subreq);
1682 struct tevent_req *smb_vfs_call_pwrite_send(struct vfs_handle_struct *handle,
1683 TALLOC_CTX *mem_ctx,
1684 struct tevent_context *ev,
1685 struct files_struct *fsp,
1687 size_t n, off_t offset)
1689 struct tevent_req *req, *subreq;
1690 struct smb_vfs_call_pwrite_state *state;
1692 req = tevent_req_create(mem_ctx, &state,
1693 struct smb_vfs_call_pwrite_state);
1697 VFS_FIND(pwrite_send);
1698 state->recv_fn = handle->fns->pwrite_recv_fn;
1700 subreq = handle->fns->pwrite_send_fn(handle, state, ev, fsp, data, n,
1702 if (tevent_req_nomem(subreq, req)) {
1703 return tevent_req_post(req, ev);
1705 tevent_req_set_callback(subreq, smb_vfs_call_pwrite_done, req);
1709 static void smb_vfs_call_pwrite_done(struct tevent_req *subreq)
1711 struct tevent_req *req = tevent_req_callback_data(
1712 subreq, struct tevent_req);
1713 struct smb_vfs_call_pwrite_state *state = tevent_req_data(
1714 req, struct smb_vfs_call_pwrite_state);
1716 state->retval = state->recv_fn(subreq, &state->vfs_aio_state);
1717 TALLOC_FREE(subreq);
1718 if (state->retval == -1) {
1719 tevent_req_error(req, state->vfs_aio_state.error);
1722 tevent_req_done(req);
1725 ssize_t SMB_VFS_PWRITE_RECV(struct tevent_req *req,
1726 struct vfs_aio_state *vfs_aio_state)
1728 struct smb_vfs_call_pwrite_state *state = tevent_req_data(
1729 req, struct smb_vfs_call_pwrite_state);
1731 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1734 *vfs_aio_state = state->vfs_aio_state;
1735 return state->retval;
1738 off_t smb_vfs_call_lseek(struct vfs_handle_struct *handle,
1739 struct files_struct *fsp, off_t offset,
1743 return handle->fns->lseek_fn(handle, fsp, offset, whence);
1746 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
1747 files_struct *fromfsp, const DATA_BLOB *header,
1748 off_t offset, size_t count)
1751 return handle->fns->sendfile_fn(handle, tofd, fromfsp, header, offset,
1755 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
1756 files_struct *tofsp, off_t offset,
1760 return handle->fns->recvfile_fn(handle, fromfd, tofsp, offset, count);
1763 int smb_vfs_call_rename(struct vfs_handle_struct *handle,
1764 const struct smb_filename *smb_fname_src,
1765 const struct smb_filename *smb_fname_dst)
1768 return handle->fns->rename_fn(handle, smb_fname_src, smb_fname_dst);
1771 int smb_vfs_call_fsync(struct vfs_handle_struct *handle,
1772 struct files_struct *fsp)
1775 return handle->fns->fsync_fn(handle, fsp);
1778 struct smb_vfs_call_fsync_state {
1779 int (*recv_fn)(struct tevent_req *req, struct vfs_aio_state *vfs_aio_state);
1781 struct vfs_aio_state vfs_aio_state;
1784 static void smb_vfs_call_fsync_done(struct tevent_req *subreq);
1786 struct tevent_req *smb_vfs_call_fsync_send(struct vfs_handle_struct *handle,
1787 TALLOC_CTX *mem_ctx,
1788 struct tevent_context *ev,
1789 struct files_struct *fsp)
1791 struct tevent_req *req, *subreq;
1792 struct smb_vfs_call_fsync_state *state;
1794 req = tevent_req_create(mem_ctx, &state,
1795 struct smb_vfs_call_fsync_state);
1799 VFS_FIND(fsync_send);
1800 state->recv_fn = handle->fns->fsync_recv_fn;
1802 subreq = handle->fns->fsync_send_fn(handle, state, ev, fsp);
1803 if (tevent_req_nomem(subreq, req)) {
1804 return tevent_req_post(req, ev);
1806 tevent_req_set_callback(subreq, smb_vfs_call_fsync_done, req);
1810 static void smb_vfs_call_fsync_done(struct tevent_req *subreq)
1812 struct tevent_req *req = tevent_req_callback_data(
1813 subreq, struct tevent_req);
1814 struct smb_vfs_call_fsync_state *state = tevent_req_data(
1815 req, struct smb_vfs_call_fsync_state);
1817 state->retval = state->recv_fn(subreq, &state->vfs_aio_state);
1818 TALLOC_FREE(subreq);
1819 if (state->retval == -1) {
1820 tevent_req_error(req, state->vfs_aio_state.error);
1823 tevent_req_done(req);
1826 int SMB_VFS_FSYNC_RECV(struct tevent_req *req, struct vfs_aio_state *vfs_aio_state)
1828 struct smb_vfs_call_fsync_state *state = tevent_req_data(
1829 req, struct smb_vfs_call_fsync_state);
1831 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1834 *vfs_aio_state = state->vfs_aio_state;
1835 return state->retval;
1839 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
1840 struct smb_filename *smb_fname)
1843 return handle->fns->stat_fn(handle, smb_fname);
1846 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
1847 struct files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1850 return handle->fns->fstat_fn(handle, fsp, sbuf);
1853 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
1854 struct smb_filename *smb_filename)
1857 return handle->fns->lstat_fn(handle, smb_filename);
1860 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
1861 struct files_struct *fsp,
1862 const SMB_STRUCT_STAT *sbuf)
1864 VFS_FIND(get_alloc_size);
1865 return handle->fns->get_alloc_size_fn(handle, fsp, sbuf);
1868 int smb_vfs_call_unlink(struct vfs_handle_struct *handle,
1869 const struct smb_filename *smb_fname)
1872 return handle->fns->unlink_fn(handle, smb_fname);
1875 int smb_vfs_call_chmod(struct vfs_handle_struct *handle,
1876 const struct smb_filename *smb_fname,
1880 return handle->fns->chmod_fn(handle, smb_fname, mode);
1883 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
1884 struct files_struct *fsp, mode_t mode)
1887 return handle->fns->fchmod_fn(handle, fsp, mode);
1890 int smb_vfs_call_chown(struct vfs_handle_struct *handle,
1891 const struct smb_filename *smb_fname,
1896 return handle->fns->chown_fn(handle, smb_fname, uid, gid);
1899 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
1900 struct files_struct *fsp, uid_t uid, gid_t gid)
1903 return handle->fns->fchown_fn(handle, fsp, uid, gid);
1906 int smb_vfs_call_lchown(struct vfs_handle_struct *handle,
1907 const struct smb_filename *smb_fname,
1912 return handle->fns->lchown_fn(handle, smb_fname, uid, gid);
1915 NTSTATUS vfs_chown_fsp(files_struct *fsp, uid_t uid, gid_t gid)
1918 bool as_root = false;
1921 if (fsp->fh->fd != -1) {
1923 ret = SMB_VFS_FCHOWN(fsp, uid, gid);
1925 return NT_STATUS_OK;
1927 if (ret == -1 && errno != ENOSYS) {
1928 return map_nt_error_from_unix(errno);
1932 as_root = (geteuid() == 0);
1936 * We are being asked to chown as root. Make
1937 * sure we chdir() into the path to pin it,
1938 * and always act using lchown to ensure we
1939 * don't deref any symbolic links.
1941 char *saved_dir = NULL;
1942 char *parent_dir = NULL;
1943 const char *final_component = NULL;
1944 struct smb_filename *local_smb_fname = NULL;
1946 saved_dir = vfs_GetWd(talloc_tos(),fsp->conn);
1948 status = map_nt_error_from_unix(errno);
1949 DEBUG(0,("vfs_chown_fsp: failed to get "
1950 "current working directory. Error was %s\n",
1955 if (!parent_dirname(talloc_tos(),
1956 fsp->fsp_name->base_name,
1958 &final_component)) {
1959 return NT_STATUS_NO_MEMORY;
1962 /* cd into the parent dir to pin it. */
1963 ret = vfs_ChDir(fsp->conn, parent_dir);
1965 return map_nt_error_from_unix(errno);
1968 local_smb_fname = synthetic_smb_fname(talloc_tos(),
1972 if (local_smb_fname == NULL) {
1973 status = NT_STATUS_NO_MEMORY;
1977 /* Must use lstat here. */
1978 ret = SMB_VFS_LSTAT(fsp->conn, local_smb_fname);
1980 status = map_nt_error_from_unix(errno);
1984 /* Ensure it matches the fsp stat. */
1985 if (!check_same_stat(&local_smb_fname->st,
1986 &fsp->fsp_name->st)) {
1987 status = NT_STATUS_ACCESS_DENIED;
1991 ret = SMB_VFS_LCHOWN(fsp->conn,
1996 status = NT_STATUS_OK;
1998 status = map_nt_error_from_unix(errno);
2003 vfs_ChDir(fsp->conn,saved_dir);
2004 TALLOC_FREE(local_smb_fname);
2005 TALLOC_FREE(saved_dir);
2006 TALLOC_FREE(parent_dir);
2011 if (fsp->posix_flags & FSP_POSIX_FLAGS_OPEN) {
2012 ret = SMB_VFS_LCHOWN(fsp->conn,
2016 ret = SMB_VFS_CHOWN(fsp->conn,
2022 status = NT_STATUS_OK;
2024 status = map_nt_error_from_unix(errno);
2029 int smb_vfs_call_chdir(struct vfs_handle_struct *handle, const char *path)
2032 return handle->fns->chdir_fn(handle, path);
2035 char *smb_vfs_call_getwd(struct vfs_handle_struct *handle)
2038 return handle->fns->getwd_fn(handle);
2041 int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
2042 const struct smb_filename *smb_fname,
2043 struct smb_file_time *ft)
2046 return handle->fns->ntimes_fn(handle, smb_fname, ft);
2049 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
2050 struct files_struct *fsp, off_t offset)
2052 VFS_FIND(ftruncate);
2053 return handle->fns->ftruncate_fn(handle, fsp, offset);
2056 int smb_vfs_call_fallocate(struct vfs_handle_struct *handle,
2057 struct files_struct *fsp,
2062 VFS_FIND(fallocate);
2063 return handle->fns->fallocate_fn(handle, fsp, mode, offset, len);
2066 int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
2067 struct files_struct *fsp, uint32_t share_mode,
2068 uint32_t access_mask)
2070 VFS_FIND(kernel_flock);
2071 return handle->fns->kernel_flock_fn(handle, fsp, share_mode,
2075 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
2076 struct files_struct *fsp, int leasetype)
2078 VFS_FIND(linux_setlease);
2079 return handle->fns->linux_setlease_fn(handle, fsp, leasetype);
2082 int smb_vfs_call_symlink(struct vfs_handle_struct *handle, const char *oldpath,
2083 const char *newpath)
2086 return handle->fns->symlink_fn(handle, oldpath, newpath);
2089 int smb_vfs_call_readlink(struct vfs_handle_struct *handle,
2090 const char *path, char *buf, size_t bufsiz)
2093 return handle->fns->readlink_fn(handle, path, buf, bufsiz);
2096 int smb_vfs_call_link(struct vfs_handle_struct *handle, const char *oldpath,
2097 const char *newpath)
2100 return handle->fns->link_fn(handle, oldpath, newpath);
2103 int smb_vfs_call_mknod(struct vfs_handle_struct *handle, const char *path,
2104 mode_t mode, SMB_DEV_T dev)
2107 return handle->fns->mknod_fn(handle, path, mode, dev);
2110 char *smb_vfs_call_realpath(struct vfs_handle_struct *handle, const char *path)
2113 return handle->fns->realpath_fn(handle, path);
2116 int smb_vfs_call_chflags(struct vfs_handle_struct *handle, const char *path,
2120 return handle->fns->chflags_fn(handle, path, flags);
2123 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
2124 const SMB_STRUCT_STAT *sbuf)
2126 VFS_FIND(file_id_create);
2127 return handle->fns->file_id_create_fn(handle, sbuf);
2130 NTSTATUS smb_vfs_call_streaminfo(struct vfs_handle_struct *handle,
2131 struct files_struct *fsp,
2132 const struct smb_filename *smb_fname,
2133 TALLOC_CTX *mem_ctx,
2134 unsigned int *num_streams,
2135 struct stream_struct **streams)
2137 VFS_FIND(streaminfo);
2138 return handle->fns->streaminfo_fn(handle, fsp, smb_fname, mem_ctx,
2139 num_streams, streams);
2142 int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
2143 const char *path, const char *name,
2144 TALLOC_CTX *mem_ctx, char **found_name)
2146 VFS_FIND(get_real_filename);
2147 return handle->fns->get_real_filename_fn(handle, path, name, mem_ctx,
2151 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
2152 const char *filename)
2154 VFS_FIND(connectpath);
2155 return handle->fns->connectpath_fn(handle, filename);
2158 bool smb_vfs_call_strict_lock(struct vfs_handle_struct *handle,
2159 struct files_struct *fsp,
2160 struct lock_struct *plock)
2162 VFS_FIND(strict_lock);
2163 return handle->fns->strict_lock_fn(handle, fsp, plock);
2166 void smb_vfs_call_strict_unlock(struct vfs_handle_struct *handle,
2167 struct files_struct *fsp,
2168 struct lock_struct *plock)
2170 VFS_FIND(strict_unlock);
2171 handle->fns->strict_unlock_fn(handle, fsp, plock);
2174 NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
2176 enum vfs_translate_direction direction,
2177 TALLOC_CTX *mem_ctx,
2180 VFS_FIND(translate_name);
2181 return handle->fns->translate_name_fn(handle, name, direction, mem_ctx,
2185 NTSTATUS smb_vfs_call_fsctl(struct vfs_handle_struct *handle,
2186 struct files_struct *fsp,
2190 const uint8_t *in_data,
2193 uint32_t max_out_len,
2197 return handle->fns->fsctl_fn(handle, fsp, ctx, function, req_flags,
2198 in_data, in_len, out_data, max_out_len,
2202 struct tevent_req *smb_vfs_call_copy_chunk_send(struct vfs_handle_struct *handle,
2203 TALLOC_CTX *mem_ctx,
2204 struct tevent_context *ev,
2205 struct files_struct *src_fsp,
2207 struct files_struct *dest_fsp,
2211 VFS_FIND(copy_chunk_send);
2212 return handle->fns->copy_chunk_send_fn(handle, mem_ctx, ev, src_fsp,
2213 src_off, dest_fsp, dest_off, num);
2216 NTSTATUS smb_vfs_call_copy_chunk_recv(struct vfs_handle_struct *handle,
2217 struct tevent_req *req,
2220 VFS_FIND(copy_chunk_recv);
2221 return handle->fns->copy_chunk_recv_fn(handle, req, copied);
2224 NTSTATUS smb_vfs_call_get_compression(vfs_handle_struct *handle,
2225 TALLOC_CTX *mem_ctx,
2226 struct files_struct *fsp,
2227 struct smb_filename *smb_fname,
2228 uint16_t *_compression_fmt)
2230 VFS_FIND(get_compression);
2231 return handle->fns->get_compression_fn(handle, mem_ctx, fsp, smb_fname,
2235 NTSTATUS smb_vfs_call_set_compression(vfs_handle_struct *handle,
2236 TALLOC_CTX *mem_ctx,
2237 struct files_struct *fsp,
2238 uint16_t compression_fmt)
2240 VFS_FIND(set_compression);
2241 return handle->fns->set_compression_fn(handle, mem_ctx, fsp,
2245 NTSTATUS smb_vfs_call_snap_check_path(vfs_handle_struct *handle,
2246 TALLOC_CTX *mem_ctx,
2247 const char *service_path,
2250 VFS_FIND(snap_check_path);
2251 return handle->fns->snap_check_path_fn(handle, mem_ctx, service_path,
2255 NTSTATUS smb_vfs_call_snap_create(struct vfs_handle_struct *handle,
2256 TALLOC_CTX *mem_ctx,
2257 const char *base_volume,
2263 VFS_FIND(snap_create);
2264 return handle->fns->snap_create_fn(handle, mem_ctx, base_volume, tstamp,
2265 rw, base_path, snap_path);
2268 NTSTATUS smb_vfs_call_snap_delete(struct vfs_handle_struct *handle,
2269 TALLOC_CTX *mem_ctx,
2273 VFS_FIND(snap_delete);
2274 return handle->fns->snap_delete_fn(handle, mem_ctx, base_path,
2278 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
2279 struct files_struct *fsp,
2280 uint32_t security_info,
2281 TALLOC_CTX *mem_ctx,
2282 struct security_descriptor **ppdesc)
2284 VFS_FIND(fget_nt_acl);
2285 return handle->fns->fget_nt_acl_fn(handle, fsp, security_info,
2289 NTSTATUS smb_vfs_call_get_nt_acl(struct vfs_handle_struct *handle,
2290 const struct smb_filename *smb_fname,
2291 uint32_t security_info,
2292 TALLOC_CTX *mem_ctx,
2293 struct security_descriptor **ppdesc)
2295 VFS_FIND(get_nt_acl);
2296 return handle->fns->get_nt_acl_fn(handle,
2303 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
2304 struct files_struct *fsp,
2305 uint32_t security_info_sent,
2306 const struct security_descriptor *psd)
2308 VFS_FIND(fset_nt_acl);
2309 return handle->fns->fset_nt_acl_fn(handle, fsp, security_info_sent,
2313 NTSTATUS smb_vfs_call_audit_file(struct vfs_handle_struct *handle,
2314 struct smb_filename *file,
2315 struct security_acl *sacl,
2316 uint32_t access_requested,
2317 uint32_t access_denied)
2319 VFS_FIND(audit_file);
2320 return handle->fns->audit_file_fn(handle,
2327 int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle,
2328 const struct smb_filename *smb_fname,
2331 VFS_FIND(chmod_acl);
2332 return handle->fns->chmod_acl_fn(handle, smb_fname, mode);
2335 int smb_vfs_call_fchmod_acl(struct vfs_handle_struct *handle,
2336 struct files_struct *fsp, mode_t mode)
2338 VFS_FIND(fchmod_acl);
2339 return handle->fns->fchmod_acl_fn(handle, fsp, mode);
2342 SMB_ACL_T smb_vfs_call_sys_acl_get_file(struct vfs_handle_struct *handle,
2344 SMB_ACL_TYPE_T type,
2345 TALLOC_CTX *mem_ctx)
2347 VFS_FIND(sys_acl_get_file);
2348 return handle->fns->sys_acl_get_file_fn(handle, path_p, type, mem_ctx);
2351 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
2352 struct files_struct *fsp,
2353 TALLOC_CTX *mem_ctx)
2355 VFS_FIND(sys_acl_get_fd);
2356 return handle->fns->sys_acl_get_fd_fn(handle, fsp, mem_ctx);
2359 int smb_vfs_call_sys_acl_blob_get_file(struct vfs_handle_struct *handle,
2361 TALLOC_CTX *mem_ctx,
2362 char **blob_description,
2365 VFS_FIND(sys_acl_blob_get_file);
2366 return handle->fns->sys_acl_blob_get_file_fn(handle, path_p, mem_ctx, blob_description, blob);
2369 int smb_vfs_call_sys_acl_blob_get_fd(struct vfs_handle_struct *handle,
2370 struct files_struct *fsp,
2371 TALLOC_CTX *mem_ctx,
2372 char **blob_description,
2375 VFS_FIND(sys_acl_blob_get_fd);
2376 return handle->fns->sys_acl_blob_get_fd_fn(handle, fsp, mem_ctx, blob_description, blob);
2379 int smb_vfs_call_sys_acl_set_file(struct vfs_handle_struct *handle,
2380 const char *name, SMB_ACL_TYPE_T acltype,
2383 VFS_FIND(sys_acl_set_file);
2384 return handle->fns->sys_acl_set_file_fn(handle, name, acltype, theacl);
2387 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
2388 struct files_struct *fsp, SMB_ACL_T theacl)
2390 VFS_FIND(sys_acl_set_fd);
2391 return handle->fns->sys_acl_set_fd_fn(handle, fsp, theacl);
2394 int smb_vfs_call_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
2397 VFS_FIND(sys_acl_delete_def_file);
2398 return handle->fns->sys_acl_delete_def_file_fn(handle, path);
2401 ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
2402 const char *path, const char *name, void *value,
2406 return handle->fns->getxattr_fn(handle, path, name, value, size);
2409 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
2410 struct files_struct *fsp, const char *name,
2411 void *value, size_t size)
2413 VFS_FIND(fgetxattr);
2414 return handle->fns->fgetxattr_fn(handle, fsp, name, value, size);
2417 ssize_t smb_vfs_call_listxattr(struct vfs_handle_struct *handle,
2418 const char *path, char *list, size_t size)
2420 VFS_FIND(listxattr);
2421 return handle->fns->listxattr_fn(handle, path, list, size);
2424 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
2425 struct files_struct *fsp, char *list,
2428 VFS_FIND(flistxattr);
2429 return handle->fns->flistxattr_fn(handle, fsp, list, size);
2432 int smb_vfs_call_removexattr(struct vfs_handle_struct *handle,
2433 const char *path, const char *name)
2435 VFS_FIND(removexattr);
2436 return handle->fns->removexattr_fn(handle, path, name);
2439 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
2440 struct files_struct *fsp, const char *name)
2442 VFS_FIND(fremovexattr);
2443 return handle->fns->fremovexattr_fn(handle, fsp, name);
2446 int smb_vfs_call_setxattr(struct vfs_handle_struct *handle, const char *path,
2447 const char *name, const void *value, size_t size,
2451 return handle->fns->setxattr_fn(handle, path, name, value, size, flags);
2454 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
2455 struct files_struct *fsp, const char *name,
2456 const void *value, size_t size, int flags)
2458 VFS_FIND(fsetxattr);
2459 return handle->fns->fsetxattr_fn(handle, fsp, name, value, size, flags);
2462 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
2463 struct files_struct *fsp)
2465 VFS_FIND(aio_force);
2466 return handle->fns->aio_force_fn(handle, fsp);
2469 bool smb_vfs_call_is_offline(struct vfs_handle_struct *handle,
2470 const struct smb_filename *fname,
2471 SMB_STRUCT_STAT *sbuf)
2473 VFS_FIND(is_offline);
2474 return handle->fns->is_offline_fn(handle, fname, sbuf);
2477 int smb_vfs_call_set_offline(struct vfs_handle_struct *handle,
2478 const struct smb_filename *fname)
2480 VFS_FIND(set_offline);
2481 return handle->fns->set_offline_fn(handle, fname);
2484 NTSTATUS smb_vfs_call_durable_cookie(struct vfs_handle_struct *handle,
2485 struct files_struct *fsp,
2486 TALLOC_CTX *mem_ctx,
2489 VFS_FIND(durable_cookie);
2490 return handle->fns->durable_cookie_fn(handle, fsp, mem_ctx, cookie);
2493 NTSTATUS smb_vfs_call_durable_disconnect(struct vfs_handle_struct *handle,
2494 struct files_struct *fsp,
2495 const DATA_BLOB old_cookie,
2496 TALLOC_CTX *mem_ctx,
2497 DATA_BLOB *new_cookie)
2499 VFS_FIND(durable_disconnect);
2500 return handle->fns->durable_disconnect_fn(handle, fsp, old_cookie,
2501 mem_ctx, new_cookie);
2504 NTSTATUS smb_vfs_call_durable_reconnect(struct vfs_handle_struct *handle,
2505 struct smb_request *smb1req,
2506 struct smbXsrv_open *op,
2507 const DATA_BLOB old_cookie,
2508 TALLOC_CTX *mem_ctx,
2509 struct files_struct **fsp,
2510 DATA_BLOB *new_cookie)
2512 VFS_FIND(durable_reconnect);
2513 return handle->fns->durable_reconnect_fn(handle, smb1req, op,
2514 old_cookie, mem_ctx, fsp,
2518 NTSTATUS smb_vfs_call_readdir_attr(struct vfs_handle_struct *handle,
2519 const struct smb_filename *fname,
2520 TALLOC_CTX *mem_ctx,
2521 struct readdir_attr_data **attr_data)
2523 VFS_FIND(readdir_attr);
2524 return handle->fns->readdir_attr_fn(handle, fname, mem_ctx, attr_data);