2 * shadow_copy2: a shadow copy module (second implementation)
4 * Copyright (C) Andrew Tridgell 2007 (portions taken from shadow_copy2)
5 * Copyright (C) Ed Plese 2009
6 * Copyright (C) Volker Lendecke 2011
7 * Copyright (C) Christian Ambach 2011
8 * Copyright (C) Michael Adam 2013
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 2 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, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 * This is a second implemetation of a shadow copy module for exposing
27 * file system snapshots to windows clients as shadow copies.
29 * See the manual page for documentation.
33 #include "smbd/smbd.h"
34 #include "system/filesys.h"
35 #include "include/ntioctl.h"
38 struct shadow_copy2_config {
43 bool snapdirseverywhere;
44 bool crossmountpoints;
47 bool snapdir_absolute;
49 char *rel_connectpath; /* share root, relative to a snapshot root */
50 char *snapshot_basepath; /* the absolute version of snapdir */
53 static bool shadow_copy2_find_slashes(TALLOC_CTX *mem_ctx, const char *str,
55 unsigned *pnum_offsets)
64 while ((p = strchr(p, '/')) != NULL) {
69 offsets = talloc_array(mem_ctx, size_t, num_offsets);
70 if (offsets == NULL) {
76 while ((p = strchr(p, '/')) != NULL) {
77 offsets[num_offsets] = p-str;
83 *pnum_offsets = num_offsets;
88 * Given a timestamp, build the posix level GMT-tag string
89 * based on the configurable format.
91 static size_t shadow_copy2_posix_gmt_string(struct vfs_handle_struct *handle,
93 char *snaptime_string,
98 struct shadow_copy2_config *config;
100 SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
103 if (config->use_sscanf) {
104 snaptime_len = snprintf(snaptime_string,
107 (unsigned long)snapshot);
108 if (snaptime_len <= 0) {
109 DEBUG(10, ("snprintf failed\n"));
113 if (config->use_localtime) {
114 if (localtime_r(&snapshot, &snap_tm) == 0) {
115 DEBUG(10, ("gmtime_r failed\n"));
119 if (gmtime_r(&snapshot, &snap_tm) == 0) {
120 DEBUG(10, ("gmtime_r failed\n"));
124 snaptime_len = strftime(snaptime_string,
128 if (snaptime_len == 0) {
129 DEBUG(10, ("strftime failed\n"));
138 * Given a timestamp, build the string to insert into a path
139 * as a path component for creating the local path to the
140 * snapshot at the given timestamp of the input path.
142 * In the case of a parallel snapdir (specified with an
143 * absolute path), this is the inital portion of the
144 * local path of any snapshot file. The complete path is
145 * obtained by appending the portion of the file's path
146 * below the share root's mountpoint.
148 static char *shadow_copy2_insert_string(TALLOC_CTX *mem_ctx,
149 struct vfs_handle_struct *handle,
152 fstring snaptime_string;
153 size_t snaptime_len = 0;
155 struct shadow_copy2_config *config;
157 SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
160 snaptime_len = shadow_copy2_posix_gmt_string(handle,
163 sizeof(snaptime_string));
164 if (snaptime_len <= 0) {
168 if (config->snapdir_absolute) {
169 result = talloc_asprintf(mem_ctx, "%s/%s",
170 config->snapdir, snaptime_string);
172 result = talloc_asprintf(mem_ctx, "/%s/%s",
173 config->snapdir, snaptime_string);
175 if (result == NULL) {
176 DEBUG(1, (__location__ " talloc_asprintf failed\n"));
183 * Build the posix snapshot path for the connection
184 * at the given timestamp, i.e. the absolute posix path
185 * that contains the snapshot for this file system.
187 * This only applies to classical case, i.e. not
188 * to the "snapdirseverywhere" mode.
190 static char *shadow_copy2_snapshot_path(TALLOC_CTX *mem_ctx,
191 struct vfs_handle_struct *handle,
194 fstring snaptime_string;
195 size_t snaptime_len = 0;
197 struct shadow_copy2_config *config;
199 SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
202 snaptime_len = shadow_copy2_posix_gmt_string(handle,
205 sizeof(snaptime_string));
206 if (snaptime_len <= 0) {
210 result = talloc_asprintf(mem_ctx, "%s/%s",
211 config->snapshot_basepath, snaptime_string);
212 if (result == NULL) {
213 DEBUG(1, (__location__ " talloc_asprintf failed\n"));
220 * Strip a snapshot component from a filename as
221 * handed in via the smb layer.
222 * Returns the parsed timestamp and the stripped filename.
224 static bool shadow_copy2_strip_snapshot(TALLOC_CTX *mem_ctx,
225 struct vfs_handle_struct *handle,
235 size_t rest_len, dst_len;
236 struct shadow_copy2_config *config;
239 ptrdiff_t len_before_gmt;
241 SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
244 DEBUG(10, (__location__ ": enter path '%s'\n", name));
246 p = strstr_m(name, "@GMT-");
248 DEBUG(11, ("@GMT not found\n"));
251 if ((p > name) && (p[-1] != '/')) {
252 /* the GMT-token does not start a path-component */
253 DEBUG(10, ("not at start, p=%p, name=%p, p[-1]=%d\n",
254 p, name, (int)p[-1]));
259 * Figure out whether we got an already converted string. One
260 * case where this happens is in a smb2 create call with the
261 * mxac create blob set. We do the get_acl call on
262 * fsp->fsp_name, which is already converted. We are converted
263 * if we got a file name of the form ".snapshots/@GMT-",
264 * i.e. ".snapshots/" precedes "p".
267 snapdir = lp_parm_const_string(SNUM(handle->conn), "shadow", "snapdir",
269 snapdirlen = strlen(snapdir);
270 len_before_gmt = p - name;
272 if ((len_before_gmt >= (snapdirlen + 1)) && (p[-1] == '/')) {
273 const char *parent_snapdir = p - (snapdirlen+1);
275 DEBUG(10, ("parent_snapdir = %s\n", parent_snapdir));
277 if (strncmp(parent_snapdir, snapdir, snapdirlen) == 0) {
278 DEBUG(10, ("name=%s is already converted\n", name));
282 q = strptime(p, GMT_FORMAT, &tm);
284 DEBUG(10, ("strptime failed\n"));
288 timestamp = timegm(&tm);
289 if (timestamp == (time_t)-1) {
290 DEBUG(10, ("timestamp==-1\n"));
295 * The name consists of only the GMT token or the GMT
296 * token is at the end of the path. XP seems to send
297 * @GMT- at the end under certain circumstances even
298 * with a path prefix.
300 if (pstripped != NULL) {
301 stripped = talloc_strndup(mem_ctx, name, p - name);
302 if (stripped == NULL) {
305 *pstripped = stripped;
307 *ptimestamp = timestamp;
312 * It is not a complete path component, i.e. the path
313 * component continues after the gmt-token.
315 DEBUG(10, ("q[0] = %d\n", (int)q[0]));
320 rest_len = strlen(q);
321 dst_len = (p-name) + rest_len;
323 if (config->snapdirseverywhere) {
326 insert = shadow_copy2_insert_string(talloc_tos(), handle,
328 if (insert == NULL) {
333 DEBUG(10, (__location__ ": snapdirseverywhere mode.\n"
335 "insert string '%s'\n", name, insert));
337 have_insert = (strstr(name, insert+1) != NULL);
338 DEBUG(10, ("have_insert=%d, name=%s, insert+1=%s\n",
339 (int)have_insert, name, insert+1));
341 DEBUG(10, (__location__ ": insert string '%s' found in "
342 "path '%s' found in snapdirseverywhere mode "
343 "==> already converted\n", insert, name));
352 snapshot_path = shadow_copy2_snapshot_path(talloc_tos(),
355 if (snapshot_path == NULL) {
360 DEBUG(10, (__location__ " path: '%s'.\n"
361 "snapshot path: '%s'\n", name, snapshot_path));
363 s = strstr(name, snapshot_path);
366 * this starts with "snapshot_basepath/GMT-Token"
367 * so it is already a converted absolute
368 * path. Don't process further.
370 DEBUG(10, (__location__ ": path '%s' starts with "
371 "snapshot path '%s' (not in "
372 "snapdirseverywhere mode) ==> "
373 "already converted\n", name, snapshot_path));
374 talloc_free(snapshot_path);
377 talloc_free(snapshot_path);
380 if (pstripped != NULL) {
381 stripped = talloc_array(mem_ctx, char, dst_len+1);
382 if (stripped == NULL) {
387 memcpy(stripped, name, p-name);
390 memcpy(stripped + (p-name), q, rest_len);
392 stripped[dst_len] = '\0';
393 *pstripped = stripped;
395 *ptimestamp = timestamp;
402 static char *shadow_copy2_find_mount_point(TALLOC_CTX *mem_ctx,
403 vfs_handle_struct *handle)
405 char *path = talloc_strdup(mem_ctx, handle->conn->connectpath);
410 if (stat(path, &st) != 0) {
417 while ((p = strrchr(path, '/')) && p > path) {
419 if (stat(path, &st) != 0) {
423 if (st.st_dev != dev) {
433 * Convert from a name as handed in via the SMB layer
434 * and a timestamp into the local path of the snapshot
435 * of the provided file at the provided time.
436 * Also return the path in the snapshot corresponding
437 * to the file's share root.
439 static char *shadow_copy2_do_convert(TALLOC_CTX *mem_ctx,
440 struct vfs_handle_struct *handle,
441 const char *name, time_t timestamp,
442 size_t *snaproot_len)
444 struct smb_filename converted_fname;
446 size_t *slashes = NULL;
447 unsigned num_slashes;
451 char *converted = NULL;
452 size_t insertlen, connectlen = 0;
455 struct shadow_copy2_config *config;
456 size_t in_share_offset = 0;
458 SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
461 DEBUG(10, ("converting '%s'\n", name));
463 if (!config->snapdirseverywhere) {
467 snapshot_path = shadow_copy2_snapshot_path(talloc_tos(),
470 if (snapshot_path == NULL) {
474 if (config->rel_connectpath == NULL) {
475 converted = talloc_asprintf(mem_ctx, "%s/%s",
476 snapshot_path, name);
478 converted = talloc_asprintf(mem_ctx, "%s/%s/%s",
480 config->rel_connectpath,
483 if (converted == NULL) {
487 ZERO_STRUCT(converted_fname);
488 converted_fname.base_name = converted;
490 ret = SMB_VFS_NEXT_LSTAT(handle, &converted_fname);
491 DEBUG(10, ("Trying[not snapdirseverywhere] %s: %d (%s)\n",
493 ret, ret == 0 ? "ok" : strerror(errno)));
495 DEBUG(10, ("Found %s\n", converted));
498 if (snaproot_len != NULL) {
499 *snaproot_len = strlen(snapshot_path);
500 if (config->rel_connectpath != NULL) {
502 strlen(config->rel_connectpath) + 1;
510 /* never reached ... */
513 connectlen = strlen(handle->conn->connectpath);
515 path = talloc_strdup(mem_ctx, handle->conn->connectpath);
517 path = talloc_asprintf(
518 mem_ctx, "%s/%s", handle->conn->connectpath, name);
524 pathlen = talloc_get_size(path)-1;
526 if (!shadow_copy2_find_slashes(talloc_tos(), path,
527 &slashes, &num_slashes)) {
531 insert = shadow_copy2_insert_string(talloc_tos(), handle, timestamp);
532 if (insert == NULL) {
535 insertlen = talloc_get_size(insert)-1;
538 * Note: We deliberatly don't expensively initialize the
539 * array with talloc_zero here: Putting zero into
540 * converted[pathlen+insertlen] below is sufficient, because
541 * in the following for loop, the insert string is inserted
542 * at various slash places. So the memory up to position
543 * pathlen+insertlen will always be initialized when the
544 * converted string is used.
546 converted = talloc_array(mem_ctx, char, pathlen + insertlen + 1);
547 if (converted == NULL) {
551 if (path[pathlen-1] != '/') {
553 * Append a fake slash to find the snapshot root
556 tmp = talloc_realloc(talloc_tos(), slashes,
557 size_t, num_slashes+1);
562 slashes[num_slashes] = pathlen;
568 if (!config->crossmountpoints) {
569 min_offset = strlen(config->mount_point);
572 memcpy(converted, path, pathlen+1);
573 converted[pathlen+insertlen] = '\0';
575 ZERO_STRUCT(converted_fname);
576 converted_fname.base_name = converted;
578 for (i = num_slashes-1; i>=0; i--) {
584 if (offset < min_offset) {
589 if (offset >= connectlen) {
590 in_share_offset = offset;
593 memcpy(converted+offset, insert, insertlen);
596 memcpy(converted+offset, path + slashes[i],
597 pathlen - slashes[i]);
599 ret = SMB_VFS_NEXT_LSTAT(handle, &converted_fname);
601 DEBUG(10, ("Trying[snapdirseverywhere] %s: %d (%s)\n",
603 ret, ret == 0 ? "ok" : strerror(errno)));
606 if (snaproot_len != NULL) {
607 *snaproot_len = in_share_offset + insertlen;
611 if (errno == ENOTDIR) {
613 * This is a valid condition: We appended the
614 * .snaphots/@GMT.. to a file name. Just try
615 * with the upper levels.
619 if (errno != ENOENT) {
620 /* Other problem than "not found" */
629 DEBUG(10, ("Found %s\n", converted));
637 TALLOC_FREE(converted);
639 TALLOC_FREE(slashes);
646 * Convert from a name as handed in via the SMB layer
647 * and a timestamp into the local path of the snapshot
648 * of the provided file at the provided time.
650 static char *shadow_copy2_convert(TALLOC_CTX *mem_ctx,
651 struct vfs_handle_struct *handle,
652 const char *name, time_t timestamp)
654 return shadow_copy2_do_convert(mem_ctx, handle, name, timestamp, NULL);
658 modify a sbuf return to ensure that inodes in the shadow directory
659 are different from those in the main directory
661 static void convert_sbuf(vfs_handle_struct *handle, const char *fname,
662 SMB_STRUCT_STAT *sbuf)
664 struct shadow_copy2_config *config;
666 SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
669 if (config->fixinodes) {
670 /* some snapshot systems, like GPFS, return the name
671 device:inode for the snapshot files as the current
672 files. That breaks the 'restore' button in the shadow copy
673 GUI, as the client gets a sharing violation.
675 This is a crude way of allowing both files to be
676 open at once. It has a slight chance of inode
677 number collision, but I can't see a better approach
678 without significant VFS changes
680 TDB_DATA key = { .dptr = discard_const_p(uint8_t, fname),
681 .dsize = strlen(fname) };
684 shash = tdb_jenkins_hash(&key) & 0xFF000000;
688 sbuf->st_ex_ino ^= shash;
692 static DIR *shadow_copy2_opendir(vfs_handle_struct *handle,
703 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
704 ×tamp, &stripped)) {
707 if (timestamp == 0) {
708 return SMB_VFS_NEXT_OPENDIR(handle, fname, mask, attr);
710 conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
711 TALLOC_FREE(stripped);
715 ret = SMB_VFS_NEXT_OPENDIR(handle, conv, mask, attr);
722 static int shadow_copy2_rename(vfs_handle_struct *handle,
723 const struct smb_filename *smb_fname_src,
724 const struct smb_filename *smb_fname_dst)
726 time_t timestamp_src, timestamp_dst;
728 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
729 smb_fname_src->base_name,
730 ×tamp_src, NULL)) {
733 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
734 smb_fname_dst->base_name,
735 ×tamp_dst, NULL)) {
738 if (timestamp_src != 0) {
742 if (timestamp_dst != 0) {
746 return SMB_VFS_NEXT_RENAME(handle, smb_fname_src, smb_fname_dst);
749 static int shadow_copy2_symlink(vfs_handle_struct *handle,
750 const char *oldname, const char *newname)
752 time_t timestamp_old, timestamp_new;
754 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, oldname,
755 ×tamp_old, NULL)) {
758 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, newname,
759 ×tamp_new, NULL)) {
762 if ((timestamp_old != 0) || (timestamp_new != 0)) {
766 return SMB_VFS_NEXT_SYMLINK(handle, oldname, newname);
769 static int shadow_copy2_link(vfs_handle_struct *handle,
770 const char *oldname, const char *newname)
772 time_t timestamp_old, timestamp_new;
774 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, oldname,
775 ×tamp_old, NULL)) {
778 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, newname,
779 ×tamp_new, NULL)) {
782 if ((timestamp_old != 0) || (timestamp_new != 0)) {
786 return SMB_VFS_NEXT_LINK(handle, oldname, newname);
789 static int shadow_copy2_stat(vfs_handle_struct *handle,
790 struct smb_filename *smb_fname)
793 char *stripped, *tmp;
794 int ret, saved_errno;
796 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
797 smb_fname->base_name,
798 ×tamp, &stripped)) {
801 if (timestamp == 0) {
802 return SMB_VFS_NEXT_STAT(handle, smb_fname);
805 tmp = smb_fname->base_name;
806 smb_fname->base_name = shadow_copy2_convert(
807 talloc_tos(), handle, stripped, timestamp);
808 TALLOC_FREE(stripped);
810 if (smb_fname->base_name == NULL) {
811 smb_fname->base_name = tmp;
815 ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
818 TALLOC_FREE(smb_fname->base_name);
819 smb_fname->base_name = tmp;
822 convert_sbuf(handle, smb_fname->base_name, &smb_fname->st);
828 static int shadow_copy2_lstat(vfs_handle_struct *handle,
829 struct smb_filename *smb_fname)
832 char *stripped, *tmp;
833 int ret, saved_errno;
835 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
836 smb_fname->base_name,
837 ×tamp, &stripped)) {
840 if (timestamp == 0) {
841 return SMB_VFS_NEXT_LSTAT(handle, smb_fname);
844 tmp = smb_fname->base_name;
845 smb_fname->base_name = shadow_copy2_convert(
846 talloc_tos(), handle, stripped, timestamp);
847 TALLOC_FREE(stripped);
849 if (smb_fname->base_name == NULL) {
850 smb_fname->base_name = tmp;
854 ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
857 TALLOC_FREE(smb_fname->base_name);
858 smb_fname->base_name = tmp;
861 convert_sbuf(handle, smb_fname->base_name, &smb_fname->st);
867 static int shadow_copy2_fstat(vfs_handle_struct *handle, files_struct *fsp,
868 SMB_STRUCT_STAT *sbuf)
873 ret = SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
877 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
878 fsp->fsp_name->base_name,
882 if (timestamp != 0) {
883 convert_sbuf(handle, fsp->fsp_name->base_name, sbuf);
888 static int shadow_copy2_open(vfs_handle_struct *handle,
889 struct smb_filename *smb_fname, files_struct *fsp,
890 int flags, mode_t mode)
893 char *stripped, *tmp;
894 int ret, saved_errno;
896 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
897 smb_fname->base_name,
898 ×tamp, &stripped)) {
901 if (timestamp == 0) {
902 return SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
905 tmp = smb_fname->base_name;
906 smb_fname->base_name = shadow_copy2_convert(
907 talloc_tos(), handle, stripped, timestamp);
908 TALLOC_FREE(stripped);
910 if (smb_fname->base_name == NULL) {
911 smb_fname->base_name = tmp;
915 ret = SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
918 TALLOC_FREE(smb_fname->base_name);
919 smb_fname->base_name = tmp;
925 static int shadow_copy2_unlink(vfs_handle_struct *handle,
926 const struct smb_filename *smb_fname)
930 int ret, saved_errno;
931 struct smb_filename *conv;
933 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
934 smb_fname->base_name,
935 ×tamp, &stripped)) {
938 if (timestamp == 0) {
939 return SMB_VFS_NEXT_UNLINK(handle, smb_fname);
941 conv = cp_smb_filename(talloc_tos(), smb_fname);
946 conv->base_name = shadow_copy2_convert(
947 conv, handle, stripped, timestamp);
948 TALLOC_FREE(stripped);
949 if (conv->base_name == NULL) {
952 ret = SMB_VFS_NEXT_UNLINK(handle, conv);
959 static int shadow_copy2_chmod(vfs_handle_struct *handle, const char *fname,
964 int ret, saved_errno;
967 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
968 ×tamp, &stripped)) {
971 if (timestamp == 0) {
972 return SMB_VFS_NEXT_CHMOD(handle, fname, mode);
974 conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
975 TALLOC_FREE(stripped);
979 ret = SMB_VFS_NEXT_CHMOD(handle, conv, mode);
986 static int shadow_copy2_chown(vfs_handle_struct *handle, const char *fname,
987 uid_t uid, gid_t gid)
991 int ret, saved_errno;
994 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
995 ×tamp, &stripped)) {
998 if (timestamp == 0) {
999 return SMB_VFS_NEXT_CHOWN(handle, fname, uid, gid);
1001 conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
1002 TALLOC_FREE(stripped);
1006 ret = SMB_VFS_NEXT_CHOWN(handle, conv, uid, gid);
1007 saved_errno = errno;
1009 errno = saved_errno;
1013 static int shadow_copy2_chdir(vfs_handle_struct *handle,
1018 int ret, saved_errno;
1021 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
1022 ×tamp, &stripped)) {
1025 if (timestamp == 0) {
1026 return SMB_VFS_NEXT_CHDIR(handle, fname);
1028 conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
1029 TALLOC_FREE(stripped);
1033 ret = SMB_VFS_NEXT_CHDIR(handle, conv);
1034 saved_errno = errno;
1036 errno = saved_errno;
1040 static int shadow_copy2_ntimes(vfs_handle_struct *handle,
1041 const struct smb_filename *smb_fname,
1042 struct smb_file_time *ft)
1046 int ret, saved_errno;
1047 struct smb_filename *conv;
1049 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
1050 smb_fname->base_name,
1051 ×tamp, &stripped)) {
1054 if (timestamp == 0) {
1055 return SMB_VFS_NEXT_NTIMES(handle, smb_fname, ft);
1057 conv = cp_smb_filename(talloc_tos(), smb_fname);
1062 conv->base_name = shadow_copy2_convert(
1063 conv, handle, stripped, timestamp);
1064 TALLOC_FREE(stripped);
1065 if (conv->base_name == NULL) {
1068 ret = SMB_VFS_NEXT_NTIMES(handle, conv, ft);
1069 saved_errno = errno;
1071 errno = saved_errno;
1075 static int shadow_copy2_readlink(vfs_handle_struct *handle,
1076 const char *fname, char *buf, size_t bufsiz)
1080 int ret, saved_errno;
1083 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
1084 ×tamp, &stripped)) {
1087 if (timestamp == 0) {
1088 return SMB_VFS_NEXT_READLINK(handle, fname, buf, bufsiz);
1090 conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
1091 TALLOC_FREE(stripped);
1095 ret = SMB_VFS_NEXT_READLINK(handle, conv, buf, bufsiz);
1096 saved_errno = errno;
1098 errno = saved_errno;
1102 static int shadow_copy2_mknod(vfs_handle_struct *handle,
1103 const char *fname, mode_t mode, SMB_DEV_T dev)
1107 int ret, saved_errno;
1110 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
1111 ×tamp, &stripped)) {
1114 if (timestamp == 0) {
1115 return SMB_VFS_NEXT_MKNOD(handle, fname, mode, dev);
1117 conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
1118 TALLOC_FREE(stripped);
1122 ret = SMB_VFS_NEXT_MKNOD(handle, conv, mode, dev);
1123 saved_errno = errno;
1125 errno = saved_errno;
1129 static char *shadow_copy2_realpath(vfs_handle_struct *handle,
1133 char *stripped = NULL;
1135 char *result = NULL;
1138 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
1139 ×tamp, &stripped)) {
1142 if (timestamp == 0) {
1143 return SMB_VFS_NEXT_REALPATH(handle, fname);
1146 tmp = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
1151 result = SMB_VFS_NEXT_REALPATH(handle, tmp);
1154 saved_errno = errno;
1156 TALLOC_FREE(stripped);
1157 errno = saved_errno;
1162 * Check whether a given directory contains a
1163 * snapshot directory as direct subdirectory.
1164 * If yes, return the path of the snapshot-subdir,
1165 * otherwise return NULL.
1167 static char *have_snapdir(struct vfs_handle_struct *handle,
1170 struct smb_filename smb_fname;
1172 struct shadow_copy2_config *config;
1174 SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
1177 ZERO_STRUCT(smb_fname);
1178 smb_fname.base_name = talloc_asprintf(talloc_tos(), "%s/%s",
1179 path, config->snapdir);
1180 if (smb_fname.base_name == NULL) {
1184 ret = SMB_VFS_NEXT_STAT(handle, &smb_fname);
1185 if ((ret == 0) && (S_ISDIR(smb_fname.st.st_ex_mode))) {
1186 return smb_fname.base_name;
1188 TALLOC_FREE(smb_fname.base_name);
1192 static bool check_access_snapdir(struct vfs_handle_struct *handle,
1195 struct smb_filename smb_fname;
1199 ZERO_STRUCT(smb_fname);
1200 smb_fname.base_name = talloc_asprintf(talloc_tos(),
1203 if (smb_fname.base_name == NULL) {
1207 ret = SMB_VFS_NEXT_STAT(handle, &smb_fname);
1208 if (ret != 0 || !S_ISDIR(smb_fname.st.st_ex_mode)) {
1209 TALLOC_FREE(smb_fname.base_name);
1213 status = smbd_check_access_rights(handle->conn,
1217 if (!NT_STATUS_IS_OK(status)) {
1218 DEBUG(0,("user does not have list permission "
1220 smb_fname.base_name));
1221 TALLOC_FREE(smb_fname.base_name);
1224 TALLOC_FREE(smb_fname.base_name);
1229 * Find the snapshot directory (if any) for the given
1230 * filename (which is relative to the share).
1232 static const char *shadow_copy2_find_snapdir(TALLOC_CTX *mem_ctx,
1233 struct vfs_handle_struct *handle,
1234 struct smb_filename *smb_fname)
1237 const char *snapdir;
1238 struct shadow_copy2_config *config;
1240 SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
1244 * If the non-snapdisrseverywhere mode, we should not search!
1246 if (!config->snapdirseverywhere) {
1247 return config->snapshot_basepath;
1250 path = talloc_asprintf(mem_ctx, "%s/%s",
1251 handle->conn->connectpath,
1252 smb_fname->base_name);
1257 snapdir = have_snapdir(handle, path);
1258 if (snapdir != NULL) {
1263 while ((p = strrchr(path, '/')) && (p > path)) {
1267 snapdir = have_snapdir(handle, path);
1268 if (snapdir != NULL) {
1277 static bool shadow_copy2_snapshot_to_gmt(vfs_handle_struct *handle,
1279 char *gmt, size_t gmt_len)
1281 struct tm timestamp;
1283 unsigned long int timestamp_long;
1285 struct shadow_copy2_config *config;
1287 SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
1290 fmt = config->gmt_format;
1292 ZERO_STRUCT(timestamp);
1293 if (config->use_sscanf) {
1294 if (sscanf(name, fmt, ×tamp_long) != 1) {
1295 DEBUG(10, ("shadow_copy2_snapshot_to_gmt: "
1296 "no sscanf match %s: %s\n",
1300 timestamp_t = timestamp_long;
1301 gmtime_r(×tamp_t, ×tamp);
1303 if (strptime(name, fmt, ×tamp) == NULL) {
1304 DEBUG(10, ("shadow_copy2_snapshot_to_gmt: "
1305 "no match %s: %s\n",
1309 DEBUG(10, ("shadow_copy2_snapshot_to_gmt: match %s: %s\n",
1312 if (config->use_localtime) {
1313 timestamp.tm_isdst = -1;
1314 timestamp_t = mktime(×tamp);
1315 gmtime_r(×tamp_t, ×tamp);
1319 strftime(gmt, gmt_len, GMT_FORMAT, ×tamp);
1323 static int shadow_copy2_label_cmp_asc(const void *x, const void *y)
1325 return strncmp((const char *)x, (const char *)y, sizeof(SHADOW_COPY_LABEL));
1328 static int shadow_copy2_label_cmp_desc(const void *x, const void *y)
1330 return -strncmp((const char *)x, (const char *)y, sizeof(SHADOW_COPY_LABEL));
1334 sort the shadow copy data in ascending or descending order
1336 static void shadow_copy2_sort_data(vfs_handle_struct *handle,
1337 struct shadow_copy_data *shadow_copy2_data)
1339 int (*cmpfunc)(const void *, const void *);
1341 struct shadow_copy2_config *config;
1343 SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
1346 sort = config->sort_order;
1351 if (strcmp(sort, "asc") == 0) {
1352 cmpfunc = shadow_copy2_label_cmp_asc;
1353 } else if (strcmp(sort, "desc") == 0) {
1354 cmpfunc = shadow_copy2_label_cmp_desc;
1359 if (shadow_copy2_data && shadow_copy2_data->num_volumes > 0 &&
1360 shadow_copy2_data->labels)
1362 TYPESAFE_QSORT(shadow_copy2_data->labels,
1363 shadow_copy2_data->num_volumes,
1368 static int shadow_copy2_get_shadow_copy_data(
1369 vfs_handle_struct *handle, files_struct *fsp,
1370 struct shadow_copy_data *shadow_copy2_data,
1374 const char *snapdir;
1376 TALLOC_CTX *tmp_ctx = talloc_stackframe();
1379 snapdir = shadow_copy2_find_snapdir(tmp_ctx, handle, fsp->fsp_name);
1380 if (snapdir == NULL) {
1381 DEBUG(0,("shadow:snapdir not found for %s in get_shadow_copy_data\n",
1382 handle->conn->connectpath));
1384 talloc_free(tmp_ctx);
1387 ret = check_access_snapdir(handle, snapdir);
1389 DEBUG(0,("access denied on listing snapdir %s\n", snapdir));
1391 talloc_free(tmp_ctx);
1395 p = SMB_VFS_NEXT_OPENDIR(handle, snapdir, NULL, 0);
1398 DEBUG(2,("shadow_copy2: SMB_VFS_NEXT_OPENDIR() failed for '%s'"
1399 " - %s\n", snapdir, strerror(errno)));
1400 talloc_free(tmp_ctx);
1405 shadow_copy2_data->num_volumes = 0;
1406 shadow_copy2_data->labels = NULL;
1408 while ((d = SMB_VFS_NEXT_READDIR(handle, p, NULL))) {
1409 char snapshot[GMT_NAME_LEN+1];
1410 SHADOW_COPY_LABEL *tlabels;
1413 * ignore names not of the right form in the snapshot
1416 if (!shadow_copy2_snapshot_to_gmt(
1418 snapshot, sizeof(snapshot))) {
1420 DEBUG(6, ("shadow_copy2_get_shadow_copy_data: "
1421 "ignoring %s\n", d->d_name));
1424 DEBUG(6,("shadow_copy2_get_shadow_copy_data: %s -> %s\n",
1425 d->d_name, snapshot));
1428 /* the caller doesn't want the labels */
1429 shadow_copy2_data->num_volumes++;
1433 tlabels = talloc_realloc(shadow_copy2_data,
1434 shadow_copy2_data->labels,
1436 shadow_copy2_data->num_volumes+1);
1437 if (tlabels == NULL) {
1438 DEBUG(0,("shadow_copy2: out of memory\n"));
1439 SMB_VFS_NEXT_CLOSEDIR(handle, p);
1440 talloc_free(tmp_ctx);
1444 strlcpy(tlabels[shadow_copy2_data->num_volumes], snapshot,
1447 shadow_copy2_data->num_volumes++;
1448 shadow_copy2_data->labels = tlabels;
1451 SMB_VFS_NEXT_CLOSEDIR(handle,p);
1453 shadow_copy2_sort_data(handle, shadow_copy2_data);
1455 talloc_free(tmp_ctx);
1459 static NTSTATUS shadow_copy2_fget_nt_acl(vfs_handle_struct *handle,
1460 struct files_struct *fsp,
1461 uint32_t security_info,
1462 TALLOC_CTX *mem_ctx,
1463 struct security_descriptor **ppdesc)
1469 struct smb_filename *smb_fname = NULL;
1471 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
1472 fsp->fsp_name->base_name,
1473 ×tamp, &stripped)) {
1474 return map_nt_error_from_unix(errno);
1476 if (timestamp == 0) {
1477 return SMB_VFS_NEXT_FGET_NT_ACL(handle, fsp, security_info,
1481 conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
1482 TALLOC_FREE(stripped);
1484 return map_nt_error_from_unix(errno);
1486 smb_fname = synthetic_smb_fname(talloc_tos(),
1490 if (smb_fname == NULL) {
1492 return NT_STATUS_NO_MEMORY;
1495 status = SMB_VFS_NEXT_GET_NT_ACL(handle, smb_fname, security_info,
1498 TALLOC_FREE(smb_fname);
1502 static NTSTATUS shadow_copy2_get_nt_acl(vfs_handle_struct *handle,
1503 const struct smb_filename *smb_fname,
1504 uint32_t security_info,
1505 TALLOC_CTX *mem_ctx,
1506 struct security_descriptor **ppdesc)
1512 struct smb_filename *conv_smb_fname = NULL;
1514 if (!shadow_copy2_strip_snapshot(talloc_tos(),
1516 smb_fname->base_name,
1519 return map_nt_error_from_unix(errno);
1521 if (timestamp == 0) {
1522 return SMB_VFS_NEXT_GET_NT_ACL(handle, smb_fname, security_info,
1525 conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
1526 TALLOC_FREE(stripped);
1528 return map_nt_error_from_unix(errno);
1530 conv_smb_fname = synthetic_smb_fname(talloc_tos(),
1534 if (conv_smb_fname == NULL) {
1536 return NT_STATUS_NO_MEMORY;
1538 status = SMB_VFS_NEXT_GET_NT_ACL(handle, conv_smb_fname, security_info,
1541 TALLOC_FREE(conv_smb_fname);
1545 static int shadow_copy2_mkdir(vfs_handle_struct *handle,
1546 const char *fname, mode_t mode)
1550 int ret, saved_errno;
1553 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
1554 ×tamp, &stripped)) {
1557 if (timestamp == 0) {
1558 return SMB_VFS_NEXT_MKDIR(handle, fname, mode);
1560 conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
1561 TALLOC_FREE(stripped);
1565 ret = SMB_VFS_NEXT_MKDIR(handle, conv, mode);
1566 saved_errno = errno;
1568 errno = saved_errno;
1572 static int shadow_copy2_rmdir(vfs_handle_struct *handle, const char *fname)
1576 int ret, saved_errno;
1579 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
1580 ×tamp, &stripped)) {
1583 if (timestamp == 0) {
1584 return SMB_VFS_NEXT_RMDIR(handle, fname);
1586 conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
1587 TALLOC_FREE(stripped);
1591 ret = SMB_VFS_NEXT_RMDIR(handle, conv);
1592 saved_errno = errno;
1594 errno = saved_errno;
1598 static int shadow_copy2_chflags(vfs_handle_struct *handle, const char *fname,
1603 int ret, saved_errno;
1606 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
1607 ×tamp, &stripped)) {
1610 if (timestamp == 0) {
1611 return SMB_VFS_NEXT_CHFLAGS(handle, fname, flags);
1613 conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
1614 TALLOC_FREE(stripped);
1618 ret = SMB_VFS_NEXT_CHFLAGS(handle, conv, flags);
1619 saved_errno = errno;
1621 errno = saved_errno;
1625 static ssize_t shadow_copy2_getxattr(vfs_handle_struct *handle,
1626 const char *fname, const char *aname,
1627 void *value, size_t size)
1635 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
1636 ×tamp, &stripped)) {
1639 if (timestamp == 0) {
1640 return SMB_VFS_NEXT_GETXATTR(handle, fname, aname, value,
1643 conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
1644 TALLOC_FREE(stripped);
1648 ret = SMB_VFS_NEXT_GETXATTR(handle, conv, aname, value, size);
1649 saved_errno = errno;
1651 errno = saved_errno;
1655 static ssize_t shadow_copy2_listxattr(struct vfs_handle_struct *handle,
1657 char *list, size_t size)
1665 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
1666 ×tamp, &stripped)) {
1669 if (timestamp == 0) {
1670 return SMB_VFS_NEXT_LISTXATTR(handle, fname, list, size);
1672 conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
1673 TALLOC_FREE(stripped);
1677 ret = SMB_VFS_NEXT_LISTXATTR(handle, conv, list, size);
1678 saved_errno = errno;
1680 errno = saved_errno;
1684 static int shadow_copy2_removexattr(vfs_handle_struct *handle,
1685 const char *fname, const char *aname)
1689 int ret, saved_errno;
1692 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
1693 ×tamp, &stripped)) {
1696 if (timestamp == 0) {
1697 return SMB_VFS_NEXT_REMOVEXATTR(handle, fname, aname);
1699 conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
1700 TALLOC_FREE(stripped);
1704 ret = SMB_VFS_NEXT_REMOVEXATTR(handle, conv, aname);
1705 saved_errno = errno;
1707 errno = saved_errno;
1711 static int shadow_copy2_setxattr(struct vfs_handle_struct *handle,
1713 const char *aname, const void *value,
1714 size_t size, int flags)
1722 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
1723 ×tamp, &stripped)) {
1726 if (timestamp == 0) {
1727 return SMB_VFS_NEXT_SETXATTR(handle, fname, aname, value, size,
1730 conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
1731 TALLOC_FREE(stripped);
1735 ret = SMB_VFS_NEXT_SETXATTR(handle, conv, aname, value, size, flags);
1736 saved_errno = errno;
1738 errno = saved_errno;
1742 static int shadow_copy2_chmod_acl(vfs_handle_struct *handle,
1743 const char *fname, mode_t mode)
1751 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
1752 ×tamp, &stripped)) {
1755 if (timestamp == 0) {
1756 return SMB_VFS_NEXT_CHMOD_ACL(handle, fname, mode);
1758 conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
1759 TALLOC_FREE(stripped);
1763 ret = SMB_VFS_NEXT_CHMOD_ACL(handle, conv, mode);
1764 saved_errno = errno;
1766 errno = saved_errno;
1770 static int shadow_copy2_get_real_filename(struct vfs_handle_struct *handle,
1773 TALLOC_CTX *mem_ctx,
1782 DEBUG(10, ("shadow_copy2_get_real_filename called for path=[%s], "
1783 "name=[%s]\n", path, name));
1785 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, path,
1786 ×tamp, &stripped)) {
1787 DEBUG(10, ("shadow_copy2_strip_snapshot failed\n"));
1790 if (timestamp == 0) {
1791 DEBUG(10, ("timestamp == 0\n"));
1792 return SMB_VFS_NEXT_GET_REAL_FILENAME(handle, path, name,
1793 mem_ctx, found_name);
1795 conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
1796 TALLOC_FREE(stripped);
1798 DEBUG(10, ("shadow_copy2_convert failed\n"));
1801 DEBUG(10, ("Calling NEXT_GET_REAL_FILE_NAME for conv=[%s], "
1802 "name=[%s]\n", conv, name));
1803 ret = SMB_VFS_NEXT_GET_REAL_FILENAME(handle, conv, name,
1804 mem_ctx, found_name);
1805 DEBUG(10, ("NEXT_REAL_FILE_NAME returned %d\n", (int)ret));
1806 saved_errno = errno;
1808 errno = saved_errno;
1812 static const char *shadow_copy2_connectpath(struct vfs_handle_struct *handle,
1816 char *stripped = NULL;
1818 char *result = NULL;
1820 size_t rootpath_len = 0;
1822 DBG_DEBUG("Calc connect path for [%s]\n", fname);
1824 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
1825 ×tamp, &stripped)) {
1828 if (timestamp == 0) {
1829 return SMB_VFS_NEXT_CONNECTPATH(handle, fname);
1832 tmp = shadow_copy2_do_convert(talloc_tos(), handle, stripped, timestamp,
1838 DBG_DEBUG("converted path is [%s] root path is [%.*s]\n", tmp,
1839 (int)rootpath_len, tmp);
1841 tmp[rootpath_len] = '\0';
1842 result = SMB_VFS_NEXT_REALPATH(handle, tmp);
1843 if (result == NULL) {
1847 DBG_DEBUG("connect path is [%s]\n", result);
1850 saved_errno = errno;
1852 TALLOC_FREE(stripped);
1853 errno = saved_errno;
1857 static uint64_t shadow_copy2_disk_free(vfs_handle_struct *handle,
1858 const char *path, uint64_t *bsize,
1859 uint64_t *dfree, uint64_t *dsize)
1867 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, path,
1868 ×tamp, &stripped)) {
1871 if (timestamp == 0) {
1872 return SMB_VFS_NEXT_DISK_FREE(handle, path,
1873 bsize, dfree, dsize);
1876 conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
1877 TALLOC_FREE(stripped);
1882 ret = SMB_VFS_NEXT_DISK_FREE(handle, conv, bsize, dfree, dsize);
1884 saved_errno = errno;
1886 errno = saved_errno;
1891 static int shadow_copy2_get_quota(vfs_handle_struct *handle, const char *path,
1892 enum SMB_QUOTA_TYPE qtype, unid_t id,
1901 if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, path, ×tamp,
1905 if (timestamp == 0) {
1906 return SMB_VFS_NEXT_GET_QUOTA(handle, path, qtype, id, dq);
1909 conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
1910 TALLOC_FREE(stripped);
1915 ret = SMB_VFS_NEXT_GET_QUOTA(handle, conv, qtype, id, dq);
1917 saved_errno = errno;
1919 errno = saved_errno;
1924 static int shadow_copy2_connect(struct vfs_handle_struct *handle,
1925 const char *service, const char *user)
1927 struct shadow_copy2_config *config;
1929 const char *snapdir;
1930 const char *gmt_format;
1931 const char *sort_order;
1932 const char *basedir = NULL;
1933 const char *snapsharepath = NULL;
1934 const char *mount_point;
1936 DEBUG(10, (__location__ ": cnum[%u], connectpath[%s]\n",
1937 (unsigned)handle->conn->cnum,
1938 handle->conn->connectpath));
1940 ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
1945 config = talloc_zero(handle->conn, struct shadow_copy2_config);
1946 if (config == NULL) {
1947 DEBUG(0, ("talloc_zero() failed\n"));
1952 gmt_format = lp_parm_const_string(SNUM(handle->conn),
1955 config->gmt_format = talloc_strdup(config, gmt_format);
1956 if (config->gmt_format == NULL) {
1957 DEBUG(0, ("talloc_strdup() failed\n"));
1962 config->use_sscanf = lp_parm_bool(SNUM(handle->conn),
1963 "shadow", "sscanf", false);
1965 config->use_localtime = lp_parm_bool(SNUM(handle->conn),
1966 "shadow", "localtime",
1969 snapdir = lp_parm_const_string(SNUM(handle->conn),
1970 "shadow", "snapdir",
1972 config->snapdir = talloc_strdup(config, snapdir);
1973 if (config->snapdir == NULL) {
1974 DEBUG(0, ("talloc_strdup() failed\n"));
1979 config->snapdirseverywhere = lp_parm_bool(SNUM(handle->conn),
1981 "snapdirseverywhere",
1984 config->crossmountpoints = lp_parm_bool(SNUM(handle->conn),
1985 "shadow", "crossmountpoints",
1988 if (config->crossmountpoints && !config->snapdirseverywhere) {
1989 DBG_WARNING("Warning: 'crossmountpoints' depends on "
1990 "'snapdirseverywhere'. Disabling crossmountpoints.\n");
1993 config->fixinodes = lp_parm_bool(SNUM(handle->conn),
1994 "shadow", "fixinodes",
1997 sort_order = lp_parm_const_string(SNUM(handle->conn),
1998 "shadow", "sort", "desc");
1999 config->sort_order = talloc_strdup(config, sort_order);
2000 if (config->sort_order == NULL) {
2001 DEBUG(0, ("talloc_strdup() failed\n"));
2006 mount_point = lp_parm_const_string(SNUM(handle->conn),
2007 "shadow", "mountpoint", NULL);
2008 if (mount_point != NULL) {
2009 if (mount_point[0] != '/') {
2010 DEBUG(1, (__location__ " Warning: 'mountpoint' is "
2011 "relative ('%s'), but it has to be an "
2012 "absolute path. Ignoring provided value.\n",
2017 p = strstr(handle->conn->connectpath, mount_point);
2018 if (p != handle->conn->connectpath) {
2019 DBG_WARNING("Warning: the share root (%s) is "
2020 "not a subdirectory of the "
2021 "specified mountpoint (%s). "
2022 "Ignoring provided value.\n",
2023 handle->conn->connectpath,
2030 if (mount_point != NULL) {
2031 config->mount_point = talloc_strdup(config, mount_point);
2032 if (config->mount_point == NULL) {
2033 DEBUG(0, (__location__ " talloc_strdup() failed\n"));
2037 config->mount_point = shadow_copy2_find_mount_point(config,
2039 if (config->mount_point == NULL) {
2040 DBG_WARNING("shadow_copy2_find_mount_point "
2041 "of the share root '%s' failed: %s\n",
2042 handle->conn->connectpath, strerror(errno));
2047 basedir = lp_parm_const_string(SNUM(handle->conn),
2048 "shadow", "basedir", NULL);
2050 if (basedir != NULL) {
2051 if (basedir[0] != '/') {
2052 DEBUG(1, (__location__ " Warning: 'basedir' is "
2053 "relative ('%s'), but it has to be an "
2054 "absolute path. Disabling basedir.\n",
2059 p = strstr(basedir, config->mount_point);
2061 DEBUG(1, ("Warning: basedir (%s) is not a "
2062 "subdirectory of the share root's "
2063 "mount point (%s). "
2064 "Disabling basedir\n",
2065 basedir, config->mount_point));
2071 if (config->snapdirseverywhere && basedir != NULL) {
2072 DEBUG(1, (__location__ " Warning: 'basedir' is incompatible "
2073 "with 'snapdirseverywhere'. Disabling basedir.\n"));
2077 snapsharepath = lp_parm_const_string(SNUM(handle->conn), "shadow",
2078 "snapsharepath", NULL);
2079 if (snapsharepath != NULL) {
2080 if (snapsharepath[0] == '/') {
2081 DBG_WARNING("Warning: 'snapsharepath' is "
2082 "absolute ('%s'), but it has to be a "
2083 "relative path. Disabling snapsharepath.\n",
2085 snapsharepath = NULL;
2087 if (config->snapdirseverywhere && snapsharepath != NULL) {
2088 DBG_WARNING("Warning: 'snapsharepath' is incompatible "
2089 "with 'snapdirseverywhere'. Disabling "
2090 "snapsharepath.\n");
2091 snapsharepath = NULL;
2095 if (basedir != NULL && snapsharepath != NULL) {
2096 DBG_WARNING("Warning: 'snapsharepath' is incompatible with "
2097 "'basedir'. Disabling snapsharepath\n");
2098 snapsharepath = NULL;
2101 if (snapsharepath != NULL) {
2102 config->rel_connectpath = talloc_strdup(config, snapsharepath);
2103 if (config->rel_connectpath == NULL) {
2104 DBG_ERR("talloc_strdup() failed\n");
2110 if (basedir == NULL) {
2111 basedir = config->mount_point;
2114 if (config->rel_connectpath == NULL &&
2115 strlen(basedir) != strlen(handle->conn->connectpath)) {
2116 config->rel_connectpath = talloc_strdup(config,
2117 handle->conn->connectpath + strlen(basedir));
2118 if (config->rel_connectpath == NULL) {
2119 DEBUG(0, ("talloc_strdup() failed\n"));
2125 if (config->snapdir[0] == '/') {
2126 config->snapdir_absolute = true;
2128 if (config->snapdirseverywhere == true) {
2129 DEBUG(1, (__location__ " Warning: An absolute snapdir "
2130 "is incompatible with 'snapdirseverywhere', "
2131 "setting 'snapdirseverywhere' to false.\n"));
2132 config->snapdirseverywhere = false;
2135 if (config->crossmountpoints == true) {
2136 DEBUG(1, (__location__ " Warning: 'crossmountpoints' "
2137 "is not supported with an absolute snapdir. "
2138 "Disabling it.\n"));
2139 config->crossmountpoints = false;
2142 config->snapshot_basepath = config->snapdir;
2144 config->snapshot_basepath = talloc_asprintf(config, "%s/%s",
2145 config->mount_point, config->snapdir);
2146 if (config->snapshot_basepath == NULL) {
2147 DEBUG(0, ("talloc_asprintf() failed\n"));
2153 DEBUG(10, ("shadow_copy2_connect: configuration:\n"
2154 " share root: '%s'\n"
2155 " mountpoint: '%s'\n"
2156 " rel share root: '%s'\n"
2158 " snapshot base path: '%s'\n"
2161 " snapdirs everywhere: %s\n"
2162 " cross mountpoints: %s\n"
2166 handle->conn->connectpath,
2167 config->mount_point,
2168 config->rel_connectpath,
2170 config->snapshot_basepath,
2172 config->use_sscanf ? "yes" : "no",
2173 config->snapdirseverywhere ? "yes" : "no",
2174 config->crossmountpoints ? "yes" : "no",
2175 config->fixinodes ? "yes" : "no",
2180 SMB_VFS_HANDLE_SET_DATA(handle, config,
2181 NULL, struct shadow_copy2_config,
2187 static struct vfs_fn_pointers vfs_shadow_copy2_fns = {
2188 .connect_fn = shadow_copy2_connect,
2189 .opendir_fn = shadow_copy2_opendir,
2190 .disk_free_fn = shadow_copy2_disk_free,
2191 .get_quota_fn = shadow_copy2_get_quota,
2192 .rename_fn = shadow_copy2_rename,
2193 .link_fn = shadow_copy2_link,
2194 .symlink_fn = shadow_copy2_symlink,
2195 .stat_fn = shadow_copy2_stat,
2196 .lstat_fn = shadow_copy2_lstat,
2197 .fstat_fn = shadow_copy2_fstat,
2198 .open_fn = shadow_copy2_open,
2199 .unlink_fn = shadow_copy2_unlink,
2200 .chmod_fn = shadow_copy2_chmod,
2201 .chown_fn = shadow_copy2_chown,
2202 .chdir_fn = shadow_copy2_chdir,
2203 .ntimes_fn = shadow_copy2_ntimes,
2204 .readlink_fn = shadow_copy2_readlink,
2205 .mknod_fn = shadow_copy2_mknod,
2206 .realpath_fn = shadow_copy2_realpath,
2207 .get_nt_acl_fn = shadow_copy2_get_nt_acl,
2208 .fget_nt_acl_fn = shadow_copy2_fget_nt_acl,
2209 .get_shadow_copy_data_fn = shadow_copy2_get_shadow_copy_data,
2210 .mkdir_fn = shadow_copy2_mkdir,
2211 .rmdir_fn = shadow_copy2_rmdir,
2212 .getxattr_fn = shadow_copy2_getxattr,
2213 .listxattr_fn = shadow_copy2_listxattr,
2214 .removexattr_fn = shadow_copy2_removexattr,
2215 .setxattr_fn = shadow_copy2_setxattr,
2216 .chmod_acl_fn = shadow_copy2_chmod_acl,
2217 .chflags_fn = shadow_copy2_chflags,
2218 .get_real_filename_fn = shadow_copy2_get_real_filename,
2219 .connectpath_fn = shadow_copy2_connectpath,
2222 NTSTATUS vfs_shadow_copy2_init(void);
2223 NTSTATUS vfs_shadow_copy2_init(void)
2225 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
2226 "shadow_copy2", &vfs_shadow_copy2_fns);