Line data Source code
1 : /*
2 : * shadow_copy2: a shadow copy module (second implementation)
3 : *
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
9 : * Copyright (C) Rajesh Joseph 2016
10 : *
11 : * This program is free software; you can redistribute it and/or modify
12 : * it under the terms of the GNU General Public License as published by
13 : * the Free Software Foundation; either version 2 of the License, or
14 : * (at your option) any later version.
15 : *
16 : * This program is distributed in the hope that it will be useful,
17 : * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 : * GNU General Public License for more details.
20 : *
21 : * You should have received a copy of the GNU General Public License
22 : * along with this program; if not, write to the Free Software
23 : * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 : */
25 :
26 : /*
27 : * This is a second implementation of a shadow copy module for exposing
28 : * file system snapshots to windows clients as shadow copies.
29 : *
30 : * See the manual page for documentation.
31 : */
32 :
33 : #include "includes.h"
34 : #include "smbd/smbd.h"
35 : #include "system/filesys.h"
36 : #include "include/ntioctl.h"
37 : #include "util_tdb.h"
38 : #include "lib/util_path.h"
39 : #include "libcli/security/security.h"
40 : #include "lib/util/tevent_unix.h"
41 :
42 : struct shadow_copy2_config {
43 : char *gmt_format;
44 : bool use_sscanf;
45 : bool use_localtime;
46 : char *snapdir;
47 : char *delimiter;
48 : bool snapdirseverywhere;
49 : bool crossmountpoints;
50 : bool fixinodes;
51 : char *sort_order;
52 : bool snapdir_absolute;
53 : char *mount_point;
54 : char *rel_connectpath; /* share root, relative to a snapshot root */
55 : char *snapshot_basepath; /* the absolute version of snapdir */
56 : };
57 :
58 : /* Data-structure to hold the list of snap entries */
59 : struct shadow_copy2_snapentry {
60 : char *snapname;
61 : char *time_fmt;
62 : struct shadow_copy2_snapentry *next;
63 : struct shadow_copy2_snapentry *prev;
64 : };
65 :
66 : struct shadow_copy2_snaplist_info {
67 : struct shadow_copy2_snapentry *snaplist; /* snapshot list */
68 : regex_t *regex; /* Regex to filter snaps */
69 : time_t fetch_time; /* snaplist update time */
70 : };
71 :
72 : /*
73 : * shadow_copy2 private structure. This structure will be
74 : * used to keep module specific information
75 : */
76 : struct shadow_copy2_private {
77 : struct shadow_copy2_config *config;
78 : struct shadow_copy2_snaplist_info *snaps;
79 : char *shadow_cwd; /* Absolute $cwd path. */
80 : /* Absolute connectpath - can vary depending on $cwd. */
81 : char *shadow_connectpath;
82 : /* talloc'ed realpath return. */
83 : struct smb_filename *shadow_realpath;
84 : };
85 :
86 : static int shadow_copy2_get_shadow_copy_data(
87 : vfs_handle_struct *handle, files_struct *fsp,
88 : struct shadow_copy_data *shadow_copy2_data,
89 : bool labels);
90 :
91 : /**
92 : * This function will create a new snapshot list entry and
93 : * return to the caller. This entry will also be added to
94 : * the global snapshot list.
95 : *
96 : * @param[in] priv shadow_copy2 specific data structure
97 : * @return Newly created snapshot entry or NULL on failure
98 : */
99 228 : static struct shadow_copy2_snapentry *shadow_copy2_create_snapentry(
100 : struct shadow_copy2_private *priv)
101 : {
102 228 : struct shadow_copy2_snapentry *tmpentry = NULL;
103 :
104 228 : tmpentry = talloc_zero(priv->snaps, struct shadow_copy2_snapentry);
105 228 : if (tmpentry == NULL) {
106 0 : DBG_ERR("talloc_zero() failed\n");
107 0 : errno = ENOMEM;
108 0 : return NULL;
109 : }
110 :
111 228 : DLIST_ADD(priv->snaps->snaplist, tmpentry);
112 :
113 228 : return tmpentry;
114 : }
115 :
116 : /**
117 : * This function will delete the entire snaplist and reset
118 : * priv->snaps->snaplist to NULL.
119 : *
120 : * @param[in] priv shadow_copye specific data structure
121 : */
122 60 : static void shadow_copy2_delete_snaplist(struct shadow_copy2_private *priv)
123 : {
124 60 : struct shadow_copy2_snapentry *tmp = NULL;
125 :
126 60 : while ((tmp = priv->snaps->snaplist) != NULL) {
127 0 : DLIST_REMOVE(priv->snaps->snaplist, tmp);
128 0 : talloc_free(tmp);
129 : }
130 60 : }
131 :
132 : /**
133 : * Given a timestamp this function searches the global snapshot list
134 : * and returns the complete snapshot directory name saved in the entry.
135 : *
136 : * @param[in] priv shadow_copy2 specific structure
137 : * @param[in] timestamp timestamp corresponding to one of the snapshot
138 : * @param[out] snap_str buffer to copy the actual snapshot name
139 : * @param[in] len length of snap_str buffer
140 : *
141 : * @return Length of actual snapshot name, and -1 on failure
142 : */
143 658 : static ssize_t shadow_copy2_saved_snapname(struct shadow_copy2_private *priv,
144 : struct tm *timestamp,
145 : char *snap_str, size_t len)
146 : {
147 658 : ssize_t snaptime_len = -1;
148 658 : struct shadow_copy2_snapentry *entry = NULL;
149 :
150 658 : snaptime_len = strftime(snap_str, len, GMT_FORMAT, timestamp);
151 658 : if (snaptime_len == 0) {
152 0 : DBG_ERR("strftime failed\n");
153 0 : return -1;
154 : }
155 :
156 658 : snaptime_len = -1;
157 :
158 1648 : for (entry = priv->snaps->snaplist; entry; entry = entry->next) {
159 1620 : if (strcmp(entry->time_fmt, snap_str) == 0) {
160 630 : snaptime_len = snprintf(snap_str, len, "%s",
161 : entry->snapname);
162 630 : return snaptime_len;
163 : }
164 : }
165 :
166 28 : snap_str[0] = 0;
167 28 : return snaptime_len;
168 : }
169 :
170 :
171 : /**
172 : * This function will check if snaplist is updated or not. If snaplist
173 : * is empty then it will create a new list. Each time snaplist is updated
174 : * the time is recorded. If the snapshot time is greater than the snaplist
175 : * update time then chances are we are working on an older list. Then discard
176 : * the old list and fetch a new snaplist.
177 : *
178 : * @param[in] handle VFS handle struct
179 : * @param[in] snap_time time of snapshot
180 : *
181 : * @return true if the list is updated else false
182 : */
183 28 : static bool shadow_copy2_update_snaplist(struct vfs_handle_struct *handle,
184 : time_t snap_time)
185 : {
186 28 : int ret = -1;
187 28 : bool snaplist_updated = false;
188 28 : struct files_struct fsp = {0};
189 28 : struct smb_filename smb_fname = {0};
190 28 : double seconds = 0.0;
191 28 : struct shadow_copy2_private *priv = NULL;
192 :
193 28 : SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
194 : return false);
195 :
196 28 : seconds = difftime(snap_time, priv->snaps->fetch_time);
197 :
198 : /*
199 : * Fetch the snapshot list if either the snaplist is empty or the
200 : * required snapshot time is greater than the last fetched snaplist
201 : * time.
202 : */
203 28 : if (seconds > 0 || (priv->snaps->snaplist == NULL)) {
204 28 : smb_fname.base_name = discard_const_p(char, ".");
205 28 : fsp.fsp_name = &smb_fname;
206 :
207 28 : ret = shadow_copy2_get_shadow_copy_data(handle, &fsp,
208 : NULL, false);
209 28 : if (ret == 0) {
210 28 : snaplist_updated = true;
211 : } else {
212 0 : DBG_ERR("Failed to get shadow copy data\n");
213 : }
214 :
215 : }
216 :
217 28 : return snaplist_updated;
218 : }
219 :
220 12732 : static bool shadow_copy2_find_slashes(TALLOC_CTX *mem_ctx, const char *str,
221 : size_t **poffsets,
222 : unsigned *pnum_offsets)
223 : {
224 : unsigned num_offsets;
225 : size_t *offsets;
226 : const char *p;
227 :
228 12732 : num_offsets = 0;
229 :
230 12732 : p = str;
231 170336 : while ((p = strchr(p, '/')) != NULL) {
232 157604 : num_offsets += 1;
233 157604 : p += 1;
234 : }
235 :
236 12732 : offsets = talloc_array(mem_ctx, size_t, num_offsets);
237 12732 : if (offsets == NULL) {
238 0 : return false;
239 : }
240 :
241 12732 : p = str;
242 12732 : num_offsets = 0;
243 170336 : while ((p = strchr(p, '/')) != NULL) {
244 157604 : offsets[num_offsets] = p-str;
245 157604 : num_offsets += 1;
246 157604 : p += 1;
247 : }
248 :
249 12732 : *poffsets = offsets;
250 12732 : *pnum_offsets = num_offsets;
251 12732 : return true;
252 : }
253 :
254 : /**
255 : * Given a timestamp, build the posix level GMT-tag string
256 : * based on the configurable format.
257 : */
258 40312 : static ssize_t shadow_copy2_posix_gmt_string(struct vfs_handle_struct *handle,
259 : time_t snapshot,
260 : char *snaptime_string,
261 : size_t len)
262 : {
263 : struct tm snap_tm;
264 : ssize_t snaptime_len;
265 : struct shadow_copy2_config *config;
266 : struct shadow_copy2_private *priv;
267 :
268 40312 : SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
269 : return 0);
270 :
271 40312 : config = priv->config;
272 :
273 40312 : if (config->use_sscanf) {
274 0 : snaptime_len = snprintf(snaptime_string,
275 : len,
276 0 : config->gmt_format,
277 : (unsigned long)snapshot);
278 0 : if (snaptime_len <= 0) {
279 0 : DEBUG(10, ("snprintf failed\n"));
280 0 : return -1;
281 : }
282 : } else {
283 40312 : if (config->use_localtime) {
284 0 : if (localtime_r(&snapshot, &snap_tm) == 0) {
285 0 : DEBUG(10, ("gmtime_r failed\n"));
286 0 : return -1;
287 : }
288 : } else {
289 40312 : if (gmtime_r(&snapshot, &snap_tm) == 0) {
290 0 : DEBUG(10, ("gmtime_r failed\n"));
291 0 : return -1;
292 : }
293 : }
294 :
295 40312 : if (priv->snaps->regex != NULL) {
296 630 : snaptime_len = shadow_copy2_saved_snapname(priv,
297 : &snap_tm, snaptime_string, len);
298 630 : if (snaptime_len >= 0)
299 602 : return snaptime_len;
300 :
301 : /*
302 : * If we fail to find the snapshot name, chances are
303 : * that we have not updated our snaplist. Make sure the
304 : * snaplist is updated.
305 : */
306 28 : if (!shadow_copy2_update_snaplist(handle, snapshot)) {
307 0 : DBG_DEBUG("shadow_copy2_update_snaplist "
308 : "failed\n");
309 0 : return -1;
310 : }
311 :
312 28 : return shadow_copy2_saved_snapname(priv,
313 : &snap_tm, snaptime_string, len);
314 : }
315 :
316 39682 : snaptime_len = strftime(snaptime_string,
317 : len,
318 39682 : config->gmt_format,
319 : &snap_tm);
320 39682 : if (snaptime_len == 0) {
321 0 : DEBUG(10, ("strftime failed\n"));
322 0 : return -1;
323 : }
324 : }
325 :
326 39682 : return snaptime_len;
327 : }
328 :
329 : /**
330 : * Given a timestamp, build the string to insert into a path
331 : * as a path component for creating the local path to the
332 : * snapshot at the given timestamp of the input path.
333 : *
334 : * In the case of a parallel snapdir (specified with an
335 : * absolute path), this is the initial portion of the
336 : * local path of any snapshot file. The complete path is
337 : * obtained by appending the portion of the file's path
338 : * below the share root's mountpoint.
339 : */
340 12732 : static char *shadow_copy2_insert_string(TALLOC_CTX *mem_ctx,
341 : struct vfs_handle_struct *handle,
342 : time_t snapshot)
343 : {
344 : fstring snaptime_string;
345 12732 : ssize_t snaptime_len = 0;
346 12732 : char *result = NULL;
347 : struct shadow_copy2_config *config;
348 : struct shadow_copy2_private *priv;
349 :
350 12732 : SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
351 : return NULL);
352 :
353 12732 : config = priv->config;
354 :
355 12732 : snaptime_len = shadow_copy2_posix_gmt_string(handle,
356 : snapshot,
357 : snaptime_string,
358 : sizeof(snaptime_string));
359 12732 : if (snaptime_len <= 0) {
360 0 : return NULL;
361 : }
362 :
363 12732 : if (config->snapdir_absolute) {
364 0 : result = talloc_asprintf(mem_ctx, "%s/%s",
365 : config->snapdir, snaptime_string);
366 : } else {
367 12732 : result = talloc_asprintf(mem_ctx, "/%s/%s",
368 : config->snapdir, snaptime_string);
369 : }
370 12732 : if (result == NULL) {
371 0 : DBG_WARNING("talloc_asprintf failed\n");
372 : }
373 :
374 12732 : return result;
375 : }
376 :
377 : /**
378 : * Build the posix snapshot path for the connection
379 : * at the given timestamp, i.e. the absolute posix path
380 : * that contains the snapshot for this file system.
381 : *
382 : * This only applies to classical case, i.e. not
383 : * to the "snapdirseverywhere" mode.
384 : */
385 27580 : static char *shadow_copy2_snapshot_path(TALLOC_CTX *mem_ctx,
386 : struct vfs_handle_struct *handle,
387 : time_t snapshot)
388 : {
389 : fstring snaptime_string;
390 27580 : ssize_t snaptime_len = 0;
391 27580 : char *result = NULL;
392 : struct shadow_copy2_private *priv;
393 :
394 27580 : SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
395 : return NULL);
396 :
397 27580 : snaptime_len = shadow_copy2_posix_gmt_string(handle,
398 : snapshot,
399 : snaptime_string,
400 : sizeof(snaptime_string));
401 27580 : if (snaptime_len <= 0) {
402 0 : return NULL;
403 : }
404 :
405 27580 : result = talloc_asprintf(mem_ctx, "%s/%s",
406 27580 : priv->config->snapshot_basepath, snaptime_string);
407 27580 : if (result == NULL) {
408 0 : DBG_WARNING("talloc_asprintf failed\n");
409 : }
410 :
411 27580 : return result;
412 : }
413 :
414 180396 : static char *make_path_absolute(TALLOC_CTX *mem_ctx,
415 : struct shadow_copy2_private *priv,
416 : const char *name)
417 : {
418 180396 : char *newpath = NULL;
419 180396 : char *abs_path = NULL;
420 :
421 180396 : if (name[0] != '/') {
422 113153 : newpath = talloc_asprintf(mem_ctx,
423 : "%s/%s",
424 : priv->shadow_cwd,
425 : name);
426 113153 : if (newpath == NULL) {
427 0 : return NULL;
428 : }
429 113153 : name = newpath;
430 : }
431 180396 : abs_path = canonicalize_absolute_path(mem_ctx, name);
432 180396 : TALLOC_FREE(newpath);
433 180396 : return abs_path;
434 : }
435 :
436 : /* Return a $cwd-relative path. */
437 40312 : static bool make_relative_path(const char *cwd, char *abs_path)
438 : {
439 40312 : size_t cwd_len = strlen(cwd);
440 40312 : size_t abs_len = strlen(abs_path);
441 :
442 40312 : if (abs_len < cwd_len) {
443 0 : return false;
444 : }
445 40312 : if (memcmp(abs_path, cwd, cwd_len) != 0) {
446 0 : return false;
447 : }
448 : /* The cwd_len != 1 case is for $cwd == '/' */
449 40312 : if (cwd_len != 1 &&
450 40312 : abs_path[cwd_len] != '/' &&
451 1958 : abs_path[cwd_len] != '\0')
452 : {
453 0 : return false;
454 : }
455 40312 : if (abs_path[cwd_len] == '/') {
456 38354 : cwd_len++;
457 : }
458 40312 : memmove(abs_path, &abs_path[cwd_len], abs_len + 1 - cwd_len);
459 40312 : return true;
460 : }
461 :
462 : static bool shadow_copy2_snapshot_to_gmt(vfs_handle_struct *handle,
463 : const char *name,
464 : char *gmt, size_t gmt_len);
465 :
466 : /*
467 : * Check if an incoming filename is already a snapshot converted pathname.
468 : *
469 : * If so, it returns the pathname truncated at the snapshot point which
470 : * will be used as the connectpath.
471 : */
472 :
473 162353 : static int check_for_converted_path(TALLOC_CTX *mem_ctx,
474 : struct vfs_handle_struct *handle,
475 : struct shadow_copy2_private *priv,
476 : char *abs_path,
477 : bool *ppath_already_converted,
478 : char **pconnectpath)
479 : {
480 162353 : size_t snapdirlen = 0;
481 162353 : char *p = strstr_m(abs_path, priv->config->snapdir);
482 162353 : char *q = NULL;
483 162353 : char *connect_path = NULL;
484 : char snapshot[GMT_NAME_LEN+1];
485 :
486 162353 : *ppath_already_converted = false;
487 :
488 162353 : if (p == NULL) {
489 : /* Must at least contain shadow:snapdir. */
490 159458 : return 0;
491 : }
492 :
493 2895 : if (priv->config->snapdir[0] == '/' &&
494 : p != abs_path) {
495 : /* Absolute shadow:snapdir must be at the start. */
496 0 : return 0;
497 : }
498 :
499 2895 : snapdirlen = strlen(priv->config->snapdir);
500 2895 : if (p[snapdirlen] != '/') {
501 : /* shadow:snapdir must end as a separate component. */
502 2860 : return 0;
503 : }
504 :
505 35 : if (p > abs_path && p[-1] != '/') {
506 : /* shadow:snapdir must start as a separate component. */
507 0 : return 0;
508 : }
509 :
510 35 : p += snapdirlen;
511 35 : p++; /* Move past the / */
512 :
513 : /*
514 : * Need to return up to the next path
515 : * component after the time.
516 : * This will be used as the connectpath.
517 : */
518 35 : q = strchr(p, '/');
519 35 : if (q == NULL) {
520 : /*
521 : * No next path component.
522 : * Use entire string.
523 : */
524 27 : connect_path = talloc_strdup(mem_ctx,
525 : abs_path);
526 : } else {
527 8 : connect_path = talloc_strndup(mem_ctx,
528 : abs_path,
529 8 : q - abs_path);
530 : }
531 35 : if (connect_path == NULL) {
532 0 : return ENOMEM;
533 : }
534 :
535 : /*
536 : * Point p at the same offset in connect_path as
537 : * it is in abs_path.
538 : */
539 :
540 35 : p = &connect_path[p - abs_path];
541 :
542 : /*
543 : * Now ensure there is a time string at p.
544 : * The SMB-format @GMT-token string is returned
545 : * in snapshot.
546 : */
547 :
548 35 : if (!shadow_copy2_snapshot_to_gmt(handle,
549 : p,
550 : snapshot,
551 : sizeof(snapshot))) {
552 0 : TALLOC_FREE(connect_path);
553 0 : return 0;
554 : }
555 :
556 35 : if (pconnectpath != NULL) {
557 5 : *pconnectpath = connect_path;
558 : }
559 :
560 35 : *ppath_already_converted = true;
561 :
562 35 : DBG_DEBUG("path |%s| is already converted. "
563 : "connect path = |%s|\n",
564 : abs_path,
565 : connect_path);
566 :
567 35 : return 0;
568 : }
569 :
570 : /**
571 : * This function does two things.
572 : *
573 : * 1). Checks if an incoming filename is already a
574 : * snapshot converted pathname.
575 : * If so, it returns the pathname truncated
576 : * at the snapshot point which will be used
577 : * as the connectpath, and then does an early return.
578 : *
579 : * 2). Checks if an incoming filename contains an
580 : * SMB-layer @GMT- style timestamp.
581 : * If so, it strips the timestamp, and returns
582 : * both the timestamp and the stripped path
583 : * (making it cwd-relative).
584 : */
585 :
586 162353 : static bool _shadow_copy2_strip_snapshot_internal(TALLOC_CTX *mem_ctx,
587 : struct vfs_handle_struct *handle,
588 : const struct smb_filename *smb_fname,
589 : time_t *ptimestamp,
590 : char **pstripped,
591 : char **psnappath,
592 : bool *_already_converted,
593 : const char *function)
594 : {
595 162353 : char *stripped = NULL;
596 : struct shadow_copy2_private *priv;
597 162353 : char *abs_path = NULL;
598 162353 : bool ret = true;
599 162353 : bool already_converted = false;
600 162353 : int err = 0;
601 :
602 162353 : SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
603 : return false);
604 :
605 162353 : DBG_DEBUG("[from %s()] Path '%s'\n",
606 : function, smb_fname_str_dbg(smb_fname));
607 :
608 162353 : if (_already_converted != NULL) {
609 86435 : *_already_converted = false;
610 : }
611 :
612 162353 : abs_path = make_path_absolute(mem_ctx, priv, smb_fname->base_name);
613 162353 : if (abs_path == NULL) {
614 0 : ret = false;
615 0 : goto out;
616 : }
617 :
618 162353 : DBG_DEBUG("abs path '%s'\n", abs_path);
619 :
620 162353 : err = check_for_converted_path(mem_ctx,
621 : handle,
622 : priv,
623 : abs_path,
624 : &already_converted,
625 : psnappath);
626 162353 : if (err != 0) {
627 : /* error in conversion. */
628 0 : ret = false;
629 0 : goto out;
630 : }
631 :
632 162353 : if (already_converted) {
633 35 : if (_already_converted != NULL) {
634 19 : *_already_converted = true;
635 : }
636 35 : goto out;
637 : }
638 :
639 162318 : if (smb_fname->twrp == 0) {
640 122006 : goto out;
641 : }
642 :
643 40312 : if (ptimestamp != NULL) {
644 40312 : *ptimestamp = nt_time_to_unix(smb_fname->twrp);
645 : }
646 :
647 40312 : if (pstripped != NULL) {
648 40312 : stripped = talloc_strdup(mem_ctx, abs_path);
649 40312 : if (stripped == NULL) {
650 0 : ret = false;
651 0 : goto out;
652 : }
653 :
654 40312 : if (smb_fname->base_name[0] != '/') {
655 40312 : ret = make_relative_path(priv->shadow_cwd, stripped);
656 40312 : if (!ret) {
657 0 : DBG_DEBUG("Path '%s' "
658 : "doesn't start with cwd '%s'\n",
659 : stripped, priv->shadow_cwd);
660 0 : ret = false;
661 0 : errno = ENOENT;
662 0 : goto out;
663 : }
664 : }
665 40312 : *pstripped = stripped;
666 : }
667 :
668 40312 : ret = true;
669 :
670 162353 : out:
671 162353 : TALLOC_FREE(abs_path);
672 162353 : return ret;
673 : }
674 :
675 : #define shadow_copy2_strip_snapshot_internal(mem_ctx, handle, orig_name, \
676 : ptimestamp, pstripped, psnappath, _already_converted) \
677 : _shadow_copy2_strip_snapshot_internal((mem_ctx), (handle), (orig_name), \
678 : (ptimestamp), (pstripped), (psnappath), (_already_converted), \
679 : __FUNCTION__)
680 :
681 57398 : static bool _shadow_copy2_strip_snapshot(TALLOC_CTX *mem_ctx,
682 : struct vfs_handle_struct *handle,
683 : const struct smb_filename *orig_name,
684 : time_t *ptimestamp,
685 : char **pstripped,
686 : const char *function)
687 : {
688 57398 : return _shadow_copy2_strip_snapshot_internal(mem_ctx,
689 : handle,
690 : orig_name,
691 : ptimestamp,
692 : pstripped,
693 : NULL,
694 : NULL,
695 : function);
696 : }
697 :
698 : #define shadow_copy2_strip_snapshot(mem_ctx, handle, orig_name, \
699 : ptimestamp, pstripped) \
700 : _shadow_copy2_strip_snapshot((mem_ctx), (handle), (orig_name), \
701 : (ptimestamp), (pstripped), __FUNCTION__)
702 :
703 86435 : static bool _shadow_copy2_strip_snapshot_converted(TALLOC_CTX *mem_ctx,
704 : struct vfs_handle_struct *handle,
705 : const struct smb_filename *orig_name,
706 : time_t *ptimestamp,
707 : char **pstripped,
708 : bool *is_converted,
709 : const char *function)
710 : {
711 86435 : return _shadow_copy2_strip_snapshot_internal(mem_ctx,
712 : handle,
713 : orig_name,
714 : ptimestamp,
715 : pstripped,
716 : NULL,
717 : is_converted,
718 : function);
719 : }
720 :
721 : #define shadow_copy2_strip_snapshot_converted(mem_ctx, handle, orig_name, \
722 : ptimestamp, pstripped, is_converted) \
723 : _shadow_copy2_strip_snapshot_converted((mem_ctx), (handle), (orig_name), \
724 : (ptimestamp), (pstripped), (is_converted), __FUNCTION__)
725 :
726 118 : static char *shadow_copy2_find_mount_point(TALLOC_CTX *mem_ctx,
727 : vfs_handle_struct *handle)
728 : {
729 118 : char *path = talloc_strdup(mem_ctx, handle->conn->connectpath);
730 : dev_t dev;
731 : struct stat st;
732 : char *p;
733 :
734 118 : if (stat(path, &st) != 0) {
735 0 : talloc_free(path);
736 0 : return NULL;
737 : }
738 :
739 118 : dev = st.st_dev;
740 :
741 976 : while ((p = strrchr(path, '/')) && p > path) {
742 858 : *p = 0;
743 858 : if (stat(path, &st) != 0) {
744 0 : talloc_free(path);
745 0 : return NULL;
746 : }
747 858 : if (st.st_dev != dev) {
748 0 : *p = '/';
749 0 : break;
750 : }
751 : }
752 :
753 118 : return path;
754 : }
755 :
756 : /**
757 : * Convert from a name as handed in via the SMB layer
758 : * and a timestamp into the local path of the snapshot
759 : * of the provided file at the provided time.
760 : * Also return the path in the snapshot corresponding
761 : * to the file's share root.
762 : */
763 40312 : static char *shadow_copy2_do_convert(TALLOC_CTX *mem_ctx,
764 : struct vfs_handle_struct *handle,
765 : const char *name, time_t timestamp,
766 : size_t *snaproot_len)
767 : {
768 : struct smb_filename converted_fname;
769 40312 : char *result = NULL;
770 40312 : size_t *slashes = NULL;
771 : unsigned num_slashes;
772 40312 : char *path = NULL;
773 : size_t pathlen;
774 40312 : char *insert = NULL;
775 40312 : char *converted = NULL;
776 40312 : size_t insertlen, connectlen = 0;
777 40312 : int saved_errno = 0;
778 : int i;
779 : size_t min_offset;
780 : struct shadow_copy2_config *config;
781 : struct shadow_copy2_private *priv;
782 40312 : size_t in_share_offset = 0;
783 :
784 40312 : SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
785 : return NULL);
786 :
787 40312 : config = priv->config;
788 :
789 40312 : DEBUG(10, ("converting '%s'\n", name));
790 :
791 40312 : if (!config->snapdirseverywhere) {
792 : int ret;
793 : char *snapshot_path;
794 :
795 27580 : snapshot_path = shadow_copy2_snapshot_path(talloc_tos(),
796 : handle,
797 : timestamp);
798 27580 : if (snapshot_path == NULL) {
799 0 : goto fail;
800 : }
801 :
802 27580 : if (config->rel_connectpath == NULL) {
803 6744 : converted = talloc_asprintf(mem_ctx, "%s/%s",
804 : snapshot_path, name);
805 : } else {
806 20836 : converted = talloc_asprintf(mem_ctx, "%s/%s/%s",
807 : snapshot_path,
808 : config->rel_connectpath,
809 : name);
810 : }
811 27580 : if (converted == NULL) {
812 0 : goto fail;
813 : }
814 :
815 27580 : converted_fname = (struct smb_filename) {
816 : .base_name = converted,
817 : };
818 :
819 27580 : ret = SMB_VFS_NEXT_LSTAT(handle, &converted_fname);
820 27580 : DEBUG(10, ("Trying[not snapdirseverywhere] %s: %d (%s)\n",
821 : converted,
822 : ret, ret == 0 ? "ok" : strerror(errno)));
823 27580 : if (ret == 0) {
824 26901 : DEBUG(10, ("Found %s\n", converted));
825 26901 : result = converted;
826 26901 : converted = NULL;
827 26901 : if (snaproot_len != NULL) {
828 1011 : *snaproot_len = strlen(snapshot_path);
829 1011 : if (config->rel_connectpath != NULL) {
830 758 : *snaproot_len +=
831 758 : strlen(config->rel_connectpath) + 1;
832 : }
833 : }
834 26901 : goto fail;
835 : } else {
836 679 : errno = ENOENT;
837 679 : goto fail;
838 : }
839 : /* never reached ... */
840 : }
841 :
842 12732 : connectlen = strlen(handle->conn->connectpath);
843 12732 : if (name[0] == 0) {
844 588 : path = talloc_strdup(mem_ctx, handle->conn->connectpath);
845 : } else {
846 12144 : path = talloc_asprintf(
847 12144 : mem_ctx, "%s/%s", handle->conn->connectpath, name);
848 : }
849 12732 : if (path == NULL) {
850 0 : errno = ENOMEM;
851 0 : goto fail;
852 : }
853 12732 : pathlen = talloc_get_size(path)-1;
854 :
855 12732 : if (!shadow_copy2_find_slashes(talloc_tos(), path,
856 : &slashes, &num_slashes)) {
857 0 : goto fail;
858 : }
859 :
860 12732 : insert = shadow_copy2_insert_string(talloc_tos(), handle, timestamp);
861 12732 : if (insert == NULL) {
862 0 : goto fail;
863 : }
864 12732 : insertlen = talloc_get_size(insert)-1;
865 :
866 : /*
867 : * Note: We deliberately don't expensively initialize the
868 : * array with talloc_zero here: Putting zero into
869 : * converted[pathlen+insertlen] below is sufficient, because
870 : * in the following for loop, the insert string is inserted
871 : * at various slash places. So the memory up to position
872 : * pathlen+insertlen will always be initialized when the
873 : * converted string is used.
874 : */
875 12732 : converted = talloc_array(mem_ctx, char, pathlen + insertlen + 1);
876 12732 : if (converted == NULL) {
877 0 : goto fail;
878 : }
879 :
880 12732 : if (path[pathlen-1] != '/') {
881 : /*
882 : * Append a fake slash to find the snapshot root
883 : */
884 : size_t *tmp;
885 12732 : tmp = talloc_realloc(talloc_tos(), slashes,
886 : size_t, num_slashes+1);
887 12732 : if (tmp == NULL) {
888 0 : goto fail;
889 : }
890 12732 : slashes = tmp;
891 12732 : slashes[num_slashes] = pathlen;
892 12732 : num_slashes += 1;
893 : }
894 :
895 12732 : min_offset = 0;
896 :
897 12732 : if (!config->crossmountpoints) {
898 12732 : min_offset = strlen(config->mount_point);
899 : }
900 :
901 12732 : memcpy(converted, path, pathlen+1);
902 12732 : converted[pathlen+insertlen] = '\0';
903 :
904 12732 : converted_fname = (struct smb_filename) {
905 : .base_name = converted,
906 : };
907 :
908 39498 : for (i = num_slashes-1; i>=0; i--) {
909 : int ret;
910 : size_t offset;
911 :
912 39498 : offset = slashes[i];
913 :
914 39498 : if (offset < min_offset) {
915 508 : errno = ENOENT;
916 508 : goto fail;
917 : }
918 :
919 38990 : if (offset >= connectlen) {
920 28152 : in_share_offset = offset;
921 : }
922 :
923 38990 : memcpy(converted+offset, insert, insertlen);
924 :
925 38990 : offset += insertlen;
926 38990 : memcpy(converted+offset, path + slashes[i],
927 38990 : pathlen - slashes[i]);
928 :
929 38990 : ret = SMB_VFS_NEXT_LSTAT(handle, &converted_fname);
930 :
931 38990 : DEBUG(10, ("Trying[snapdirseverywhere] %s: %d (%s)\n",
932 : converted,
933 : ret, ret == 0 ? "ok" : strerror(errno)));
934 38990 : if (ret == 0) {
935 : /* success */
936 12224 : if (snaproot_len != NULL) {
937 428 : *snaproot_len = in_share_offset + insertlen;
938 : }
939 12224 : break;
940 : }
941 26766 : if (errno == ENOTDIR) {
942 : /*
943 : * This is a valid condition: We appended the
944 : * .snapshots/@GMT.. to a file name. Just try
945 : * with the upper levels.
946 : */
947 7092 : continue;
948 : }
949 19674 : if (errno != ENOENT) {
950 : /* Other problem than "not found" */
951 0 : goto fail;
952 : }
953 : }
954 :
955 12224 : if (i >= 0) {
956 : /*
957 : * Found something
958 : */
959 12224 : DEBUG(10, ("Found %s\n", converted));
960 12224 : result = converted;
961 12224 : converted = NULL;
962 : } else {
963 0 : errno = ENOENT;
964 : }
965 40312 : fail:
966 40312 : if (result == NULL) {
967 1187 : saved_errno = errno;
968 : }
969 40312 : TALLOC_FREE(converted);
970 40312 : TALLOC_FREE(insert);
971 40312 : TALLOC_FREE(slashes);
972 40312 : TALLOC_FREE(path);
973 40312 : if (saved_errno != 0) {
974 1187 : errno = saved_errno;
975 : }
976 40312 : return result;
977 : }
978 :
979 : /**
980 : * Convert from a name as handed in via the SMB layer
981 : * and a timestamp into the local path of the snapshot
982 : * of the provided file at the provided time.
983 : */
984 38873 : static char *shadow_copy2_convert(TALLOC_CTX *mem_ctx,
985 : struct vfs_handle_struct *handle,
986 : const char *name, time_t timestamp)
987 : {
988 38873 : return shadow_copy2_do_convert(mem_ctx, handle, name, timestamp, NULL);
989 : }
990 :
991 : /*
992 : modify a sbuf return to ensure that inodes in the shadow directory
993 : are different from those in the main directory
994 : */
995 18043 : static void convert_sbuf(vfs_handle_struct *handle, const char *fname,
996 : SMB_STRUCT_STAT *sbuf)
997 : {
998 : struct shadow_copy2_private *priv;
999 :
1000 18043 : SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
1001 : return);
1002 :
1003 18043 : if (priv->config->fixinodes) {
1004 : /* some snapshot systems, like GPFS, return the same
1005 : device:inode for the snapshot files as the current
1006 : files. That breaks the 'restore' button in the shadow copy
1007 : GUI, as the client gets a sharing violation.
1008 :
1009 : This is a crude way of allowing both files to be
1010 : open at once. It has a slight chance of inode
1011 : number collision, but I can't see a better approach
1012 : without significant VFS changes
1013 : */
1014 58 : TDB_DATA key = { .dptr = discard_const_p(uint8_t, fname),
1015 58 : .dsize = strlen(fname) };
1016 : uint32_t shash;
1017 :
1018 58 : shash = tdb_jenkins_hash(&key) & 0xFF000000;
1019 58 : if (shash == 0) {
1020 0 : shash = 1;
1021 : }
1022 58 : sbuf->st_ex_ino ^= shash;
1023 : }
1024 : }
1025 :
1026 0 : static int shadow_copy2_renameat(vfs_handle_struct *handle,
1027 : files_struct *srcfsp,
1028 : const struct smb_filename *smb_fname_src,
1029 : files_struct *dstfsp,
1030 : const struct smb_filename *smb_fname_dst)
1031 : {
1032 0 : time_t timestamp_src = 0;
1033 0 : time_t timestamp_dst = 0;
1034 0 : char *snappath_src = NULL;
1035 0 : char *snappath_dst = NULL;
1036 :
1037 0 : if (!shadow_copy2_strip_snapshot_internal(talloc_tos(), handle,
1038 : smb_fname_src,
1039 : ×tamp_src, NULL, &snappath_src,
1040 : NULL)) {
1041 0 : return -1;
1042 : }
1043 0 : if (!shadow_copy2_strip_snapshot_internal(talloc_tos(), handle,
1044 : smb_fname_dst,
1045 : ×tamp_dst, NULL, &snappath_dst,
1046 : NULL)) {
1047 0 : return -1;
1048 : }
1049 0 : if (timestamp_src != 0) {
1050 0 : errno = EXDEV;
1051 0 : return -1;
1052 : }
1053 0 : if (timestamp_dst != 0) {
1054 0 : errno = EROFS;
1055 0 : return -1;
1056 : }
1057 : /*
1058 : * Don't allow rename on already converted paths.
1059 : */
1060 0 : if (snappath_src != NULL) {
1061 0 : errno = EXDEV;
1062 0 : return -1;
1063 : }
1064 0 : if (snappath_dst != NULL) {
1065 0 : errno = EROFS;
1066 0 : return -1;
1067 : }
1068 0 : return SMB_VFS_NEXT_RENAMEAT(handle,
1069 : srcfsp,
1070 : smb_fname_src,
1071 : dstfsp,
1072 : smb_fname_dst);
1073 : }
1074 :
1075 0 : static int shadow_copy2_symlinkat(vfs_handle_struct *handle,
1076 : const struct smb_filename *link_contents,
1077 : struct files_struct *dirfsp,
1078 : const struct smb_filename *new_smb_fname)
1079 : {
1080 0 : time_t timestamp_old = 0;
1081 0 : time_t timestamp_new = 0;
1082 0 : char *snappath_old = NULL;
1083 0 : char *snappath_new = NULL;
1084 :
1085 0 : if (!shadow_copy2_strip_snapshot_internal(talloc_tos(),
1086 : handle,
1087 : link_contents,
1088 : ×tamp_old,
1089 : NULL,
1090 : &snappath_old,
1091 : NULL)) {
1092 0 : return -1;
1093 : }
1094 0 : if (!shadow_copy2_strip_snapshot_internal(talloc_tos(),
1095 : handle,
1096 : new_smb_fname,
1097 : ×tamp_new,
1098 : NULL,
1099 : &snappath_new,
1100 : NULL)) {
1101 0 : return -1;
1102 : }
1103 0 : if ((timestamp_old != 0) || (timestamp_new != 0)) {
1104 0 : errno = EROFS;
1105 0 : return -1;
1106 : }
1107 : /*
1108 : * Don't allow symlinks on already converted paths.
1109 : */
1110 0 : if ((snappath_old != NULL) || (snappath_new != NULL)) {
1111 0 : errno = EROFS;
1112 0 : return -1;
1113 : }
1114 0 : return SMB_VFS_NEXT_SYMLINKAT(handle,
1115 : link_contents,
1116 : dirfsp,
1117 : new_smb_fname);
1118 : }
1119 :
1120 0 : static int shadow_copy2_linkat(vfs_handle_struct *handle,
1121 : files_struct *srcfsp,
1122 : const struct smb_filename *old_smb_fname,
1123 : files_struct *dstfsp,
1124 : const struct smb_filename *new_smb_fname,
1125 : int flags)
1126 : {
1127 0 : time_t timestamp_old = 0;
1128 0 : time_t timestamp_new = 0;
1129 0 : char *snappath_old = NULL;
1130 0 : char *snappath_new = NULL;
1131 :
1132 0 : if (!shadow_copy2_strip_snapshot_internal(talloc_tos(),
1133 : handle,
1134 : old_smb_fname,
1135 : ×tamp_old,
1136 : NULL,
1137 : &snappath_old,
1138 : NULL)) {
1139 0 : return -1;
1140 : }
1141 0 : if (!shadow_copy2_strip_snapshot_internal(talloc_tos(),
1142 : handle,
1143 : new_smb_fname,
1144 : ×tamp_new,
1145 : NULL,
1146 : &snappath_new,
1147 : NULL)) {
1148 0 : return -1;
1149 : }
1150 0 : if ((timestamp_old != 0) || (timestamp_new != 0)) {
1151 0 : errno = EROFS;
1152 0 : return -1;
1153 : }
1154 : /*
1155 : * Don't allow links on already converted paths.
1156 : */
1157 0 : if ((snappath_old != NULL) || (snappath_new != NULL)) {
1158 0 : errno = EROFS;
1159 0 : return -1;
1160 : }
1161 0 : return SMB_VFS_NEXT_LINKAT(handle,
1162 : srcfsp,
1163 : old_smb_fname,
1164 : dstfsp,
1165 : new_smb_fname,
1166 : flags);
1167 : }
1168 :
1169 40002 : static int shadow_copy2_stat(vfs_handle_struct *handle,
1170 : struct smb_filename *smb_fname)
1171 : {
1172 40002 : struct shadow_copy2_private *priv = NULL;
1173 40002 : time_t timestamp = 0;
1174 40002 : char *stripped = NULL;
1175 40002 : bool converted = false;
1176 40002 : char *abspath = NULL;
1177 : char *tmp;
1178 40002 : int ret = 0;
1179 :
1180 40002 : SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
1181 : return -1);
1182 :
1183 40002 : if (!shadow_copy2_strip_snapshot_converted(talloc_tos(),
1184 : handle,
1185 : smb_fname,
1186 : ×tamp,
1187 : &stripped,
1188 : &converted)) {
1189 0 : return -1;
1190 : }
1191 40002 : if (timestamp == 0) {
1192 40001 : TALLOC_FREE(stripped);
1193 40001 : ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
1194 40001 : if (ret != 0) {
1195 5 : return ret;
1196 : }
1197 39996 : if (!converted) {
1198 39984 : return 0;
1199 : }
1200 :
1201 12 : abspath = make_path_absolute(talloc_tos(),
1202 : priv,
1203 12 : smb_fname->base_name);
1204 12 : if (abspath == NULL) {
1205 0 : return -1;
1206 : }
1207 :
1208 12 : convert_sbuf(handle, abspath, &smb_fname->st);
1209 12 : TALLOC_FREE(abspath);
1210 12 : return 0;
1211 : }
1212 :
1213 1 : tmp = smb_fname->base_name;
1214 1 : smb_fname->base_name = shadow_copy2_convert(
1215 : talloc_tos(), handle, stripped, timestamp);
1216 1 : TALLOC_FREE(stripped);
1217 :
1218 1 : if (smb_fname->base_name == NULL) {
1219 0 : smb_fname->base_name = tmp;
1220 0 : return -1;
1221 : }
1222 :
1223 1 : ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
1224 1 : if (ret != 0) {
1225 0 : goto out;
1226 : }
1227 :
1228 1 : abspath = make_path_absolute(talloc_tos(),
1229 : priv,
1230 1 : smb_fname->base_name);
1231 1 : if (abspath == NULL) {
1232 0 : ret = -1;
1233 0 : goto out;
1234 : }
1235 :
1236 1 : convert_sbuf(handle, abspath, &smb_fname->st);
1237 1 : TALLOC_FREE(abspath);
1238 :
1239 0 : out:
1240 1 : TALLOC_FREE(smb_fname->base_name);
1241 1 : smb_fname->base_name = tmp;
1242 :
1243 1 : return ret;
1244 : }
1245 :
1246 2 : static int shadow_copy2_lstat(vfs_handle_struct *handle,
1247 : struct smb_filename *smb_fname)
1248 : {
1249 2 : struct shadow_copy2_private *priv = NULL;
1250 2 : time_t timestamp = 0;
1251 2 : char *stripped = NULL;
1252 2 : bool converted = false;
1253 2 : char *abspath = NULL;
1254 : char *tmp;
1255 2 : int ret = 0;
1256 :
1257 2 : SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
1258 : return -1);
1259 :
1260 2 : if (!shadow_copy2_strip_snapshot_converted(talloc_tos(),
1261 : handle,
1262 : smb_fname,
1263 : ×tamp,
1264 : &stripped,
1265 : &converted)) {
1266 0 : return -1;
1267 : }
1268 2 : if (timestamp == 0) {
1269 2 : TALLOC_FREE(stripped);
1270 2 : ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
1271 2 : if (ret != 0) {
1272 0 : return ret;
1273 : }
1274 2 : if (!converted) {
1275 2 : return 0;
1276 : }
1277 :
1278 0 : abspath = make_path_absolute(talloc_tos(),
1279 : priv,
1280 0 : smb_fname->base_name);
1281 0 : if (abspath == NULL) {
1282 0 : return -1;
1283 : }
1284 :
1285 0 : convert_sbuf(handle, abspath, &smb_fname->st);
1286 0 : TALLOC_FREE(abspath);
1287 0 : return 0;
1288 : }
1289 :
1290 0 : tmp = smb_fname->base_name;
1291 0 : smb_fname->base_name = shadow_copy2_convert(
1292 : talloc_tos(), handle, stripped, timestamp);
1293 0 : TALLOC_FREE(stripped);
1294 :
1295 0 : if (smb_fname->base_name == NULL) {
1296 0 : smb_fname->base_name = tmp;
1297 0 : return -1;
1298 : }
1299 :
1300 0 : ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
1301 0 : if (ret != 0) {
1302 0 : goto out;
1303 : }
1304 :
1305 0 : abspath = make_path_absolute(talloc_tos(),
1306 : priv,
1307 0 : smb_fname->base_name);
1308 0 : if (abspath == NULL) {
1309 0 : ret = -1;
1310 0 : goto out;
1311 : }
1312 :
1313 0 : convert_sbuf(handle, abspath, &smb_fname->st);
1314 0 : TALLOC_FREE(abspath);
1315 :
1316 0 : out:
1317 0 : TALLOC_FREE(smb_fname->base_name);
1318 0 : smb_fname->base_name = tmp;
1319 :
1320 0 : return ret;
1321 : }
1322 :
1323 42383 : static int shadow_copy2_fstat(vfs_handle_struct *handle, files_struct *fsp,
1324 : SMB_STRUCT_STAT *sbuf)
1325 : {
1326 42383 : struct shadow_copy2_private *priv = NULL;
1327 42383 : time_t timestamp = 0;
1328 42383 : struct smb_filename *orig_smb_fname = NULL;
1329 : struct smb_filename vss_smb_fname;
1330 42383 : struct smb_filename *orig_base_smb_fname = NULL;
1331 : struct smb_filename vss_base_smb_fname;
1332 42383 : char *stripped = NULL;
1333 42383 : char *abspath = NULL;
1334 42383 : bool converted = false;
1335 : bool ok;
1336 : int ret;
1337 :
1338 42383 : SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
1339 : return -1);
1340 :
1341 42383 : ok = shadow_copy2_strip_snapshot_converted(talloc_tos(),
1342 : handle,
1343 : fsp->fsp_name,
1344 : ×tamp,
1345 : &stripped,
1346 : &converted);
1347 42383 : if (!ok) {
1348 0 : return -1;
1349 : }
1350 :
1351 42383 : if (timestamp == 0) {
1352 25881 : TALLOC_FREE(stripped);
1353 25881 : ret = SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
1354 25881 : if (ret != 0) {
1355 0 : return ret;
1356 : }
1357 25881 : if (!converted) {
1358 25874 : return 0;
1359 : }
1360 :
1361 7 : abspath = make_path_absolute(talloc_tos(),
1362 : priv,
1363 7 : fsp->fsp_name->base_name);
1364 7 : if (abspath == NULL) {
1365 0 : return -1;
1366 : }
1367 :
1368 7 : convert_sbuf(handle, abspath, sbuf);
1369 7 : TALLOC_FREE(abspath);
1370 7 : return 0;
1371 : }
1372 :
1373 16502 : vss_smb_fname = *fsp->fsp_name;
1374 16502 : vss_smb_fname.base_name = shadow_copy2_convert(talloc_tos(),
1375 : handle,
1376 : stripped,
1377 : timestamp);
1378 16502 : TALLOC_FREE(stripped);
1379 16502 : if (vss_smb_fname.base_name == NULL) {
1380 0 : return -1;
1381 : }
1382 :
1383 16502 : orig_smb_fname = fsp->fsp_name;
1384 16502 : fsp->fsp_name = &vss_smb_fname;
1385 :
1386 16502 : if (fsp_is_alternate_stream(fsp)) {
1387 2 : vss_base_smb_fname = *fsp->base_fsp->fsp_name;
1388 2 : vss_base_smb_fname.base_name = vss_smb_fname.base_name;
1389 2 : orig_base_smb_fname = fsp->base_fsp->fsp_name;
1390 2 : fsp->base_fsp->fsp_name = &vss_base_smb_fname;
1391 : }
1392 :
1393 16502 : ret = SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
1394 16502 : if (ret != 0) {
1395 0 : goto out;
1396 : }
1397 :
1398 16502 : abspath = make_path_absolute(talloc_tos(),
1399 : priv,
1400 16502 : fsp->fsp_name->base_name);
1401 16502 : if (abspath == NULL) {
1402 0 : ret = -1;
1403 0 : goto out;
1404 : }
1405 :
1406 16502 : convert_sbuf(handle, abspath, sbuf);
1407 16502 : TALLOC_FREE(abspath);
1408 :
1409 0 : out:
1410 16502 : fsp->fsp_name = orig_smb_fname;
1411 16502 : if (fsp_is_alternate_stream(fsp)) {
1412 2 : fsp->base_fsp->fsp_name = orig_base_smb_fname;
1413 : }
1414 :
1415 16502 : return ret;
1416 : }
1417 :
1418 1523 : static int shadow_copy2_fstatat(
1419 : struct vfs_handle_struct *handle,
1420 : const struct files_struct *dirfsp,
1421 : const struct smb_filename *smb_fname_in,
1422 : SMB_STRUCT_STAT *sbuf,
1423 : int flags)
1424 : {
1425 1523 : struct shadow_copy2_private *priv = NULL;
1426 1523 : struct smb_filename *smb_fname = NULL;
1427 1523 : time_t timestamp = 0;
1428 1523 : char *stripped = NULL;
1429 1523 : char *abspath = NULL;
1430 1523 : bool converted = false;
1431 : int ret;
1432 : bool ok;
1433 :
1434 1523 : SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
1435 : return -1);
1436 :
1437 1523 : smb_fname = full_path_from_dirfsp_atname(talloc_tos(),
1438 : dirfsp,
1439 : smb_fname_in);
1440 1523 : if (smb_fname == NULL) {
1441 0 : errno = ENOMEM;
1442 0 : return -1;
1443 : }
1444 :
1445 1523 : ok = shadow_copy2_strip_snapshot_converted(talloc_tos(),
1446 : handle,
1447 : smb_fname,
1448 : ×tamp,
1449 : &stripped,
1450 : &converted);
1451 1523 : if (!ok) {
1452 0 : return -1;
1453 : }
1454 1523 : if (timestamp == 0) {
1455 2 : TALLOC_FREE(stripped);
1456 2 : ret = SMB_VFS_NEXT_FSTATAT(
1457 : handle, dirfsp, smb_fname_in, sbuf, flags);
1458 2 : if (ret != 0) {
1459 0 : return ret;
1460 : }
1461 2 : if (!converted) {
1462 2 : return 0;
1463 : }
1464 :
1465 0 : abspath = make_path_absolute(
1466 0 : talloc_tos(), priv, smb_fname->base_name);
1467 0 : if (abspath == NULL) {
1468 0 : errno = ENOMEM;
1469 0 : return -1;
1470 : }
1471 :
1472 0 : convert_sbuf(handle, abspath, sbuf);
1473 0 : TALLOC_FREE(abspath);
1474 0 : return 0;
1475 : }
1476 :
1477 1521 : smb_fname->base_name = shadow_copy2_convert(
1478 : smb_fname, handle, stripped, timestamp);
1479 1521 : TALLOC_FREE(stripped);
1480 1521 : if (smb_fname->base_name == NULL) {
1481 0 : TALLOC_FREE(smb_fname);
1482 0 : errno = ENOMEM;
1483 0 : return -1;
1484 : }
1485 :
1486 1521 : ret = SMB_VFS_NEXT_FSTATAT(handle,
1487 : dirfsp,
1488 : smb_fname,
1489 : sbuf,
1490 : flags);
1491 1521 : if (ret != 0) {
1492 0 : int saved_errno = errno;
1493 0 : TALLOC_FREE(smb_fname);
1494 0 : errno = saved_errno;
1495 0 : return -1;
1496 : }
1497 :
1498 1521 : abspath = make_path_absolute(
1499 1521 : talloc_tos(), priv, smb_fname->base_name);
1500 1521 : if (abspath == NULL) {
1501 0 : TALLOC_FREE(smb_fname);
1502 0 : errno = ENOMEM;
1503 0 : return -1;
1504 : }
1505 :
1506 1521 : convert_sbuf(handle, abspath, sbuf);
1507 1521 : TALLOC_FREE(abspath);
1508 :
1509 1521 : TALLOC_FREE(smb_fname);
1510 :
1511 1521 : return 0;
1512 : }
1513 :
1514 35103 : static struct smb_filename *shadow_copy2_openat_name(
1515 : TALLOC_CTX *mem_ctx,
1516 : const struct files_struct *dirfsp,
1517 : const struct files_struct *fsp,
1518 : const struct smb_filename *smb_fname_in)
1519 : {
1520 35103 : struct smb_filename *result = NULL;
1521 :
1522 35103 : if (fsp->base_fsp != NULL) {
1523 8 : struct smb_filename *base_fname = fsp->base_fsp->fsp_name;
1524 :
1525 8 : if (smb_fname_in->base_name[0] == '/') {
1526 : /*
1527 : * Special-case stream names from streams_depot
1528 : */
1529 6 : result = cp_smb_filename(mem_ctx, smb_fname_in);
1530 : } else {
1531 :
1532 2 : SMB_ASSERT(is_named_stream(smb_fname_in));
1533 :
1534 2 : result = synthetic_smb_fname(mem_ctx,
1535 2 : base_fname->base_name,
1536 2 : smb_fname_in->stream_name,
1537 : &smb_fname_in->st,
1538 2 : smb_fname_in->twrp,
1539 2 : smb_fname_in->flags);
1540 : }
1541 : } else {
1542 35095 : result = full_path_from_dirfsp_atname(
1543 : mem_ctx, dirfsp, smb_fname_in);
1544 : }
1545 :
1546 35103 : return result;
1547 : }
1548 :
1549 39498 : static int shadow_copy2_openat(vfs_handle_struct *handle,
1550 : const struct files_struct *dirfsp,
1551 : const struct smb_filename *smb_fname_in,
1552 : struct files_struct *fsp,
1553 : const struct vfs_open_how *_how)
1554 : {
1555 39498 : struct vfs_open_how how = *_how;
1556 39498 : struct smb_filename *smb_fname = NULL;
1557 39498 : time_t timestamp = 0;
1558 39498 : char *stripped = NULL;
1559 39498 : int saved_errno = 0;
1560 : int ret;
1561 : bool ok;
1562 :
1563 39498 : if (how.resolve != 0) {
1564 4395 : errno = ENOSYS;
1565 4395 : return -1;
1566 : }
1567 :
1568 35103 : smb_fname = shadow_copy2_openat_name(
1569 : talloc_tos(), dirfsp, fsp, smb_fname_in);
1570 35103 : if (smb_fname == NULL) {
1571 0 : errno = ENOMEM;
1572 0 : return -1;
1573 : }
1574 :
1575 35103 : ok = shadow_copy2_strip_snapshot(talloc_tos(),
1576 : handle,
1577 : smb_fname,
1578 : ×tamp,
1579 : &stripped);
1580 35103 : if (!ok) {
1581 0 : TALLOC_FREE(smb_fname);
1582 0 : return -1;
1583 : }
1584 35103 : if (timestamp == 0) {
1585 19382 : TALLOC_FREE(stripped);
1586 19382 : TALLOC_FREE(smb_fname);
1587 19382 : return SMB_VFS_NEXT_OPENAT(handle,
1588 : dirfsp,
1589 : smb_fname_in,
1590 : fsp,
1591 : &how);
1592 : }
1593 :
1594 15721 : smb_fname->base_name = shadow_copy2_convert(smb_fname,
1595 : handle,
1596 : stripped,
1597 : timestamp);
1598 15721 : if (smb_fname->base_name == NULL) {
1599 1119 : int err = errno;
1600 1119 : TALLOC_FREE(stripped);
1601 1119 : TALLOC_FREE(smb_fname);
1602 1119 : errno = err;
1603 1119 : return -1;
1604 : }
1605 14602 : TALLOC_FREE(stripped);
1606 :
1607 14602 : ret = SMB_VFS_NEXT_OPENAT(handle,
1608 : dirfsp,
1609 : smb_fname,
1610 : fsp,
1611 : &how);
1612 14602 : if (ret == -1) {
1613 1520 : saved_errno = errno;
1614 : }
1615 :
1616 14602 : TALLOC_FREE(smb_fname);
1617 :
1618 14602 : if (saved_errno != 0) {
1619 1520 : errno = saved_errno;
1620 : }
1621 14602 : return ret;
1622 : }
1623 :
1624 12 : static int shadow_copy2_unlinkat(vfs_handle_struct *handle,
1625 : struct files_struct *dirfsp,
1626 : const struct smb_filename *smb_fname,
1627 : int flags)
1628 : {
1629 12 : time_t timestamp = 0;
1630 :
1631 12 : if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
1632 : smb_fname,
1633 : ×tamp, NULL)) {
1634 0 : return -1;
1635 : }
1636 12 : if (timestamp != 0) {
1637 0 : errno = EROFS;
1638 0 : return -1;
1639 : }
1640 12 : return SMB_VFS_NEXT_UNLINKAT(handle,
1641 : dirfsp,
1642 : smb_fname,
1643 : flags);
1644 : }
1645 :
1646 10 : static int shadow_copy2_fchmod(vfs_handle_struct *handle,
1647 : struct files_struct *fsp,
1648 : mode_t mode)
1649 : {
1650 10 : time_t timestamp = 0;
1651 10 : const struct smb_filename *smb_fname = NULL;
1652 :
1653 10 : smb_fname = fsp->fsp_name;
1654 10 : if (!shadow_copy2_strip_snapshot(talloc_tos(),
1655 : handle,
1656 : smb_fname,
1657 : ×tamp,
1658 : NULL)) {
1659 0 : return -1;
1660 : }
1661 10 : if (timestamp != 0) {
1662 0 : errno = EROFS;
1663 0 : return -1;
1664 : }
1665 10 : return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
1666 : }
1667 :
1668 18520 : static void store_cwd_data(vfs_handle_struct *handle,
1669 : const char *connectpath)
1670 : {
1671 18520 : struct shadow_copy2_private *priv = NULL;
1672 18520 : struct smb_filename *cwd_fname = NULL;
1673 :
1674 18520 : SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
1675 : return);
1676 :
1677 18520 : TALLOC_FREE(priv->shadow_cwd);
1678 18520 : cwd_fname = SMB_VFS_NEXT_GETWD(handle, talloc_tos());
1679 18520 : if (cwd_fname == NULL) {
1680 0 : smb_panic("getwd failed\n");
1681 : }
1682 18520 : DBG_DEBUG("shadow cwd = %s\n", cwd_fname->base_name);
1683 18520 : priv->shadow_cwd = talloc_strdup(priv, cwd_fname->base_name);
1684 18520 : TALLOC_FREE(cwd_fname);
1685 18520 : if (priv->shadow_cwd == NULL) {
1686 0 : smb_panic("talloc failed\n");
1687 : }
1688 18520 : TALLOC_FREE(priv->shadow_connectpath);
1689 18520 : if (connectpath) {
1690 5 : DBG_DEBUG("shadow connectpath = %s\n", connectpath);
1691 5 : priv->shadow_connectpath = talloc_strdup(priv, connectpath);
1692 5 : if (priv->shadow_connectpath == NULL) {
1693 0 : smb_panic("talloc failed\n");
1694 : }
1695 : }
1696 : }
1697 :
1698 18520 : static int shadow_copy2_chdir(vfs_handle_struct *handle,
1699 : const struct smb_filename *smb_fname)
1700 : {
1701 18520 : time_t timestamp = 0;
1702 18520 : char *stripped = NULL;
1703 18520 : char *snappath = NULL;
1704 18520 : int ret = -1;
1705 18520 : int saved_errno = 0;
1706 18520 : char *conv = NULL;
1707 18520 : size_t rootpath_len = 0;
1708 18520 : struct smb_filename *conv_smb_fname = NULL;
1709 :
1710 18520 : if (!shadow_copy2_strip_snapshot_internal(talloc_tos(),
1711 : handle,
1712 : smb_fname,
1713 : ×tamp,
1714 : &stripped,
1715 : &snappath,
1716 : NULL)) {
1717 0 : return -1;
1718 : }
1719 18520 : if (stripped != NULL) {
1720 0 : conv = shadow_copy2_do_convert(talloc_tos(),
1721 : handle,
1722 : stripped,
1723 : timestamp,
1724 : &rootpath_len);
1725 0 : TALLOC_FREE(stripped);
1726 0 : if (conv == NULL) {
1727 0 : return -1;
1728 : }
1729 0 : conv_smb_fname = synthetic_smb_fname(talloc_tos(),
1730 : conv,
1731 : NULL,
1732 : NULL,
1733 : 0,
1734 0 : smb_fname->flags);
1735 : } else {
1736 18520 : conv_smb_fname = cp_smb_filename(talloc_tos(), smb_fname);
1737 : }
1738 :
1739 18520 : if (conv_smb_fname == NULL) {
1740 0 : TALLOC_FREE(conv);
1741 0 : errno = ENOMEM;
1742 0 : return -1;
1743 : }
1744 :
1745 18520 : ret = SMB_VFS_NEXT_CHDIR(handle, conv_smb_fname);
1746 18520 : if (ret == -1) {
1747 0 : saved_errno = errno;
1748 : }
1749 :
1750 18520 : if (ret == 0) {
1751 18520 : if (conv != NULL && rootpath_len != 0) {
1752 0 : conv[rootpath_len] = '\0';
1753 18520 : } else if (snappath != 0) {
1754 5 : TALLOC_FREE(conv);
1755 5 : conv = snappath;
1756 : }
1757 18520 : store_cwd_data(handle, conv);
1758 : }
1759 :
1760 18520 : TALLOC_FREE(stripped);
1761 18520 : TALLOC_FREE(conv);
1762 18520 : TALLOC_FREE(conv_smb_fname);
1763 :
1764 18520 : if (saved_errno != 0) {
1765 0 : errno = saved_errno;
1766 : }
1767 18520 : return ret;
1768 : }
1769 :
1770 8 : static int shadow_copy2_fntimes(vfs_handle_struct *handle,
1771 : files_struct *fsp,
1772 : struct smb_file_time *ft)
1773 : {
1774 8 : time_t timestamp = 0;
1775 :
1776 8 : if (!shadow_copy2_strip_snapshot(talloc_tos(),
1777 : handle,
1778 : fsp->fsp_name,
1779 : ×tamp,
1780 : NULL)) {
1781 0 : return -1;
1782 : }
1783 8 : if (timestamp != 0) {
1784 0 : errno = EROFS;
1785 0 : return -1;
1786 : }
1787 8 : return SMB_VFS_NEXT_FNTIMES(handle, fsp, ft);
1788 : }
1789 :
1790 2668 : static int shadow_copy2_readlinkat(vfs_handle_struct *handle,
1791 : const struct files_struct *dirfsp,
1792 : const struct smb_filename *smb_fname,
1793 : char *buf,
1794 : size_t bufsiz)
1795 : {
1796 2668 : time_t timestamp = 0;
1797 2668 : char *stripped = NULL;
1798 2668 : int saved_errno = 0;
1799 : int ret;
1800 2668 : struct smb_filename *full_fname = NULL;
1801 2668 : struct smb_filename *conv = NULL;
1802 :
1803 2668 : full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1804 : dirfsp,
1805 : smb_fname);
1806 2668 : if (full_fname == NULL) {
1807 0 : errno = ENOMEM;
1808 0 : return -1;
1809 : }
1810 :
1811 2668 : if (!shadow_copy2_strip_snapshot(talloc_tos(),
1812 : handle,
1813 : full_fname,
1814 : ×tamp,
1815 : &stripped)) {
1816 0 : TALLOC_FREE(full_fname);
1817 0 : return -1;
1818 : }
1819 :
1820 2668 : if (timestamp == 0) {
1821 186 : TALLOC_FREE(full_fname);
1822 186 : TALLOC_FREE(stripped);
1823 186 : return SMB_VFS_NEXT_READLINKAT(handle,
1824 : dirfsp,
1825 : smb_fname,
1826 : buf,
1827 : bufsiz);
1828 : }
1829 2482 : conv = cp_smb_filename(talloc_tos(), full_fname);
1830 2482 : if (conv == NULL) {
1831 0 : TALLOC_FREE(full_fname);
1832 0 : TALLOC_FREE(stripped);
1833 0 : errno = ENOMEM;
1834 0 : return -1;
1835 : }
1836 2482 : TALLOC_FREE(full_fname);
1837 2482 : conv->base_name = shadow_copy2_convert(
1838 : conv, handle, stripped, timestamp);
1839 2482 : TALLOC_FREE(stripped);
1840 2482 : if (conv->base_name == NULL) {
1841 0 : return -1;
1842 : }
1843 2482 : ret = SMB_VFS_NEXT_READLINKAT(handle,
1844 : handle->conn->cwd_fsp,
1845 : conv,
1846 : buf,
1847 : bufsiz);
1848 2482 : if (ret == -1) {
1849 0 : saved_errno = errno;
1850 : }
1851 2482 : TALLOC_FREE(conv);
1852 2482 : if (saved_errno != 0) {
1853 0 : errno = saved_errno;
1854 : }
1855 2482 : return ret;
1856 : }
1857 :
1858 0 : static int shadow_copy2_mknodat(vfs_handle_struct *handle,
1859 : files_struct *dirfsp,
1860 : const struct smb_filename *smb_fname,
1861 : mode_t mode,
1862 : SMB_DEV_T dev)
1863 : {
1864 0 : time_t timestamp = 0;
1865 :
1866 0 : if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
1867 : smb_fname,
1868 : ×tamp, NULL)) {
1869 0 : return -1;
1870 : }
1871 0 : if (timestamp != 0) {
1872 0 : errno = EROFS;
1873 0 : return -1;
1874 : }
1875 0 : return SMB_VFS_NEXT_MKNODAT(handle,
1876 : dirfsp,
1877 : smb_fname,
1878 : mode,
1879 : dev);
1880 : }
1881 :
1882 11098 : static struct smb_filename *shadow_copy2_realpath(vfs_handle_struct *handle,
1883 : TALLOC_CTX *ctx,
1884 : const struct smb_filename *smb_fname)
1885 : {
1886 11098 : time_t timestamp = 0;
1887 11098 : char *stripped = NULL;
1888 11098 : struct smb_filename *result_fname = NULL;
1889 11098 : struct smb_filename *conv_fname = NULL;
1890 11098 : int saved_errno = 0;
1891 :
1892 11098 : if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
1893 : smb_fname,
1894 : ×tamp, &stripped)) {
1895 0 : goto done;
1896 : }
1897 11098 : if (timestamp == 0) {
1898 10977 : return SMB_VFS_NEXT_REALPATH(handle, ctx, smb_fname);
1899 : }
1900 :
1901 121 : conv_fname = cp_smb_filename(talloc_tos(), smb_fname);
1902 121 : if (conv_fname == NULL) {
1903 0 : goto done;
1904 : }
1905 121 : conv_fname->base_name = shadow_copy2_convert(
1906 : conv_fname, handle, stripped, timestamp);
1907 121 : if (conv_fname->base_name == NULL) {
1908 0 : goto done;
1909 : }
1910 :
1911 121 : result_fname = SMB_VFS_NEXT_REALPATH(handle, ctx, conv_fname);
1912 :
1913 121 : done:
1914 121 : if (result_fname == NULL) {
1915 0 : saved_errno = errno;
1916 : }
1917 121 : TALLOC_FREE(conv_fname);
1918 121 : TALLOC_FREE(stripped);
1919 121 : if (saved_errno != 0) {
1920 0 : errno = saved_errno;
1921 : }
1922 121 : return result_fname;
1923 : }
1924 :
1925 : /**
1926 : * Check whether a given directory contains a
1927 : * snapshot directory as direct subdirectory.
1928 : * If yes, return the path of the snapshot-subdir,
1929 : * otherwise return NULL.
1930 : */
1931 2824 : static char *have_snapdir(struct vfs_handle_struct *handle,
1932 : TALLOC_CTX *mem_ctx,
1933 : const char *path)
1934 : {
1935 : struct smb_filename smb_fname;
1936 : int ret;
1937 : struct shadow_copy2_private *priv;
1938 :
1939 2824 : SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
1940 : return NULL);
1941 :
1942 2824 : smb_fname = (struct smb_filename) {
1943 2824 : .base_name = talloc_asprintf(
1944 2824 : mem_ctx, "%s/%s", path, priv->config->snapdir),
1945 : };
1946 2824 : if (smb_fname.base_name == NULL) {
1947 0 : return NULL;
1948 : }
1949 :
1950 2824 : ret = SMB_VFS_NEXT_STAT(handle, &smb_fname);
1951 2824 : if ((ret == 0) && (S_ISDIR(smb_fname.st.st_ex_mode))) {
1952 840 : return smb_fname.base_name;
1953 : }
1954 1984 : TALLOC_FREE(smb_fname.base_name);
1955 1984 : return NULL;
1956 : }
1957 :
1958 : /**
1959 : * Find the snapshot directory (if any) for the given
1960 : * filename (which is relative to the share).
1961 : */
1962 2860 : static const char *shadow_copy2_find_snapdir(TALLOC_CTX *mem_ctx,
1963 : struct vfs_handle_struct *handle,
1964 : struct smb_filename *smb_fname)
1965 : {
1966 : char *path, *p;
1967 : const char *snapdir;
1968 : struct shadow_copy2_config *config;
1969 : struct shadow_copy2_private *priv;
1970 :
1971 2860 : SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
1972 : return NULL);
1973 :
1974 2860 : config = priv->config;
1975 :
1976 : /*
1977 : * If the non-snapdirseverywhere mode, we should not search!
1978 : */
1979 2860 : if (!config->snapdirseverywhere) {
1980 2020 : return config->snapshot_basepath;
1981 : }
1982 :
1983 840 : path = talloc_asprintf(mem_ctx, "%s/%s",
1984 840 : handle->conn->connectpath,
1985 : smb_fname->base_name);
1986 840 : if (path == NULL) {
1987 0 : return NULL;
1988 : }
1989 :
1990 840 : snapdir = have_snapdir(handle, talloc_tos(), path);
1991 840 : if (snapdir != NULL) {
1992 8 : TALLOC_FREE(path);
1993 8 : return snapdir;
1994 : }
1995 :
1996 1984 : while ((p = strrchr(path, '/')) && (p > path)) {
1997 :
1998 1984 : p[0] = '\0';
1999 :
2000 1984 : snapdir = have_snapdir(handle, talloc_tos(), path);
2001 1984 : if (snapdir != NULL) {
2002 832 : TALLOC_FREE(path);
2003 832 : return snapdir;
2004 : }
2005 : }
2006 0 : TALLOC_FREE(path);
2007 0 : return NULL;
2008 : }
2009 :
2010 16835 : static bool shadow_copy2_snapshot_to_gmt(vfs_handle_struct *handle,
2011 : const char *name,
2012 : char *gmt, size_t gmt_len)
2013 : {
2014 16835 : struct tm timestamp = { .tm_sec = 0, };
2015 : time_t timestamp_t;
2016 : unsigned long int timestamp_long;
2017 : const char *fmt;
2018 : struct shadow_copy2_config *config;
2019 : struct shadow_copy2_private *priv;
2020 16835 : char *tmpstr = NULL;
2021 16835 : char *tmp = NULL;
2022 16835 : bool converted = false;
2023 16835 : int ret = -1;
2024 :
2025 16835 : SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
2026 : return NULL);
2027 :
2028 16835 : config = priv->config;
2029 :
2030 16835 : fmt = config->gmt_format;
2031 :
2032 : /*
2033 : * If regex is provided, then we will have to parse the
2034 : * filename which will contain both the prefix and the time format.
2035 : * e.g. <prefix><delimiter><time_format>
2036 : */
2037 16835 : if (priv->snaps->regex != NULL) {
2038 1104 : tmpstr = talloc_strdup(talloc_tos(), name);
2039 : /* point "name" to the time format */
2040 1104 : name = strstr(name, priv->config->delimiter);
2041 1104 : if (name == NULL) {
2042 620 : goto done;
2043 : }
2044 : /* Extract the prefix */
2045 484 : tmp = strstr(tmpstr, priv->config->delimiter);
2046 484 : if (tmp == NULL) {
2047 0 : goto done;
2048 : }
2049 484 : *tmp = '\0';
2050 :
2051 : /* Parse regex */
2052 484 : ret = regexec(priv->snaps->regex, tmpstr, 0, NULL, 0);
2053 484 : if (ret) {
2054 40 : DBG_DEBUG("shadow_copy2_snapshot_to_gmt: "
2055 : "no regex match for %s\n", tmpstr);
2056 40 : goto done;
2057 : }
2058 : }
2059 :
2060 16175 : if (config->use_sscanf) {
2061 0 : if (sscanf(name, fmt, ×tamp_long) != 1) {
2062 0 : DEBUG(10, ("shadow_copy2_snapshot_to_gmt: "
2063 : "no sscanf match %s: %s\n",
2064 : fmt, name));
2065 0 : goto done;
2066 : }
2067 0 : timestamp_t = timestamp_long;
2068 0 : gmtime_r(×tamp_t, ×tamp);
2069 : } else {
2070 16175 : if (strptime(name, fmt, ×tamp) == NULL) {
2071 7600 : DEBUG(10, ("shadow_copy2_snapshot_to_gmt: "
2072 : "no match %s: %s\n",
2073 : fmt, name));
2074 7600 : goto done;
2075 : }
2076 8575 : DEBUG(10, ("shadow_copy2_snapshot_to_gmt: match %s: %s\n",
2077 : fmt, name));
2078 :
2079 8575 : if (config->use_localtime) {
2080 0 : timestamp.tm_isdst = -1;
2081 0 : timestamp_t = mktime(×tamp);
2082 0 : gmtime_r(×tamp_t, ×tamp);
2083 : }
2084 : }
2085 :
2086 8575 : strftime(gmt, gmt_len, GMT_FORMAT, ×tamp);
2087 8575 : converted = true;
2088 :
2089 16835 : done:
2090 16835 : TALLOC_FREE(tmpstr);
2091 16835 : return converted;
2092 : }
2093 :
2094 0 : static int shadow_copy2_label_cmp_asc(const void *x, const void *y)
2095 : {
2096 0 : return strncmp((const char *)x, (const char *)y, sizeof(SHADOW_COPY_LABEL));
2097 : }
2098 :
2099 5576 : static int shadow_copy2_label_cmp_desc(const void *x, const void *y)
2100 : {
2101 5576 : return -strncmp((const char *)x, (const char *)y, sizeof(SHADOW_COPY_LABEL));
2102 : }
2103 :
2104 : /*
2105 : sort the shadow copy data in ascending or descending order
2106 : */
2107 2860 : static void shadow_copy2_sort_data(vfs_handle_struct *handle,
2108 : struct shadow_copy_data *shadow_copy2_data)
2109 : {
2110 : int (*cmpfunc)(const void *, const void *);
2111 : const char *sort;
2112 : struct shadow_copy2_private *priv;
2113 :
2114 2860 : SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
2115 : return);
2116 :
2117 2860 : sort = priv->config->sort_order;
2118 2860 : if (sort == NULL) {
2119 0 : return;
2120 : }
2121 :
2122 2860 : if (strcmp(sort, "asc") == 0) {
2123 0 : cmpfunc = shadow_copy2_label_cmp_asc;
2124 2860 : } else if (strcmp(sort, "desc") == 0) {
2125 2860 : cmpfunc = shadow_copy2_label_cmp_desc;
2126 : } else {
2127 0 : return;
2128 : }
2129 :
2130 2860 : if (shadow_copy2_data && shadow_copy2_data->num_volumes > 0 &&
2131 2830 : shadow_copy2_data->labels)
2132 : {
2133 1413 : TYPESAFE_QSORT(shadow_copy2_data->labels,
2134 : shadow_copy2_data->num_volumes,
2135 : cmpfunc);
2136 : }
2137 : }
2138 :
2139 2860 : static int shadow_copy2_get_shadow_copy_data(
2140 : vfs_handle_struct *handle, files_struct *fsp,
2141 : struct shadow_copy_data *shadow_copy2_data,
2142 : bool labels)
2143 : {
2144 2860 : DIR *p = NULL;
2145 : const char *snapdir;
2146 2860 : struct smb_filename *snapdir_smb_fname = NULL;
2147 2860 : struct files_struct *dirfsp = NULL;
2148 2860 : struct files_struct *fspcwd = NULL;
2149 : struct dirent *d;
2150 2860 : TALLOC_CTX *tmp_ctx = talloc_stackframe();
2151 2860 : struct shadow_copy2_private *priv = NULL;
2152 2860 : struct shadow_copy2_snapentry *tmpentry = NULL;
2153 2860 : bool get_snaplist = false;
2154 2860 : struct vfs_open_how how = {
2155 : .flags = O_RDONLY, .mode = 0,
2156 : };
2157 : int fd;
2158 2860 : int ret = -1;
2159 : NTSTATUS status;
2160 2860 : int saved_errno = 0;
2161 :
2162 2860 : snapdir = shadow_copy2_find_snapdir(tmp_ctx, handle, fsp->fsp_name);
2163 2860 : if (snapdir == NULL) {
2164 0 : DEBUG(0,("shadow:snapdir not found for %s in get_shadow_copy_data\n",
2165 : handle->conn->connectpath));
2166 0 : errno = EINVAL;
2167 0 : goto done;
2168 : }
2169 :
2170 2860 : snapdir_smb_fname = synthetic_smb_fname(talloc_tos(),
2171 : snapdir,
2172 : NULL,
2173 : NULL,
2174 : 0,
2175 2860 : fsp->fsp_name->flags);
2176 2860 : if (snapdir_smb_fname == NULL) {
2177 0 : errno = ENOMEM;
2178 0 : goto done;
2179 : }
2180 :
2181 2860 : status = create_internal_dirfsp(handle->conn,
2182 : snapdir_smb_fname,
2183 : &dirfsp);
2184 2860 : if (!NT_STATUS_IS_OK(status)) {
2185 0 : DBG_WARNING("create_internal_dir_fsp() failed for '%s'"
2186 : " - %s\n", snapdir, nt_errstr(status));
2187 0 : errno = ENOSYS;
2188 0 : goto done;
2189 : }
2190 :
2191 2860 : status = vfs_at_fspcwd(talloc_tos(), handle->conn, &fspcwd);
2192 2860 : if (!NT_STATUS_IS_OK(status)) {
2193 0 : errno = ENOMEM;
2194 0 : goto done;
2195 : }
2196 :
2197 : #ifdef O_DIRECTORY
2198 2860 : how.flags |= O_DIRECTORY;
2199 : #endif
2200 :
2201 2860 : fd = SMB_VFS_NEXT_OPENAT(handle,
2202 : fspcwd,
2203 : snapdir_smb_fname,
2204 : dirfsp,
2205 : &how);
2206 2860 : if (fd == -1) {
2207 0 : DBG_WARNING("SMB_VFS_NEXT_OPEN failed for '%s'"
2208 : " - %s\n", snapdir, strerror(errno));
2209 0 : errno = ENOSYS;
2210 0 : goto done;
2211 : }
2212 2860 : fsp_set_fd(dirfsp, fd);
2213 :
2214 : /* Now we have the handle, check access here. */
2215 2860 : status = smbd_check_access_rights_fsp(fspcwd,
2216 : dirfsp,
2217 : false,
2218 : SEC_DIR_LIST);
2219 2860 : if (!NT_STATUS_IS_OK(status)) {
2220 0 : DBG_ERR("user does not have list permission "
2221 : "on snapdir %s\n",
2222 : fsp_str_dbg(dirfsp));
2223 0 : errno = EACCES;
2224 0 : goto done;
2225 : }
2226 :
2227 2860 : p = SMB_VFS_NEXT_FDOPENDIR(handle, dirfsp, NULL, 0);
2228 2860 : if (!p) {
2229 0 : DBG_NOTICE("shadow_copy2: SMB_VFS_NEXT_FDOPENDIR() failed for '%s'"
2230 : " - %s\n", snapdir, strerror(errno));
2231 0 : errno = ENOSYS;
2232 0 : goto done;
2233 : }
2234 :
2235 2860 : if (shadow_copy2_data != NULL) {
2236 2832 : shadow_copy2_data->num_volumes = 0;
2237 2832 : shadow_copy2_data->labels = NULL;
2238 : }
2239 :
2240 2860 : SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
2241 : goto done);
2242 :
2243 : /*
2244 : * Normally this function is called twice once with labels = false and
2245 : * then with labels = true. When labels is false it will return the
2246 : * number of volumes so that the caller can allocate memory for that
2247 : * many labels. Therefore to eliminate snaplist both the times it is
2248 : * good to check if labels is set or not.
2249 : *
2250 : * shadow_copy2_data is NULL when we only want to update the list and
2251 : * don't want any labels.
2252 : */
2253 2860 : if ((priv->snaps->regex != NULL) && (labels || shadow_copy2_data == NULL)) {
2254 60 : get_snaplist = true;
2255 : /* Reset the global snaplist */
2256 60 : shadow_copy2_delete_snaplist(priv);
2257 :
2258 : /* Set the current time as snaplist update time */
2259 60 : time(&(priv->snaps->fetch_time));
2260 : }
2261 :
2262 19660 : while ((d = SMB_VFS_NEXT_READDIR(handle, dirfsp, p))) {
2263 : char snapshot[GMT_NAME_LEN+1];
2264 : SHADOW_COPY_LABEL *tlabels;
2265 :
2266 : /*
2267 : * ignore names not of the right form in the snapshot
2268 : * directory
2269 : */
2270 16800 : if (!shadow_copy2_snapshot_to_gmt(
2271 16800 : handle, d->d_name,
2272 : snapshot, sizeof(snapshot))) {
2273 :
2274 8260 : DEBUG(6, ("shadow_copy2_get_shadow_copy_data: "
2275 : "ignoring %s\n", d->d_name));
2276 12591 : continue;
2277 : }
2278 8540 : DEBUG(6,("shadow_copy2_get_shadow_copy_data: %s -> %s\n",
2279 : d->d_name, snapshot));
2280 :
2281 8540 : if (get_snaplist) {
2282 : /*
2283 : * Create a snap entry for each successful
2284 : * pattern match.
2285 : */
2286 228 : tmpentry = shadow_copy2_create_snapentry(priv);
2287 228 : if (tmpentry == NULL) {
2288 0 : DBG_ERR("talloc_zero() failed\n");
2289 0 : goto done;
2290 : }
2291 228 : tmpentry->snapname = talloc_strdup(tmpentry, d->d_name);
2292 228 : tmpentry->time_fmt = talloc_strdup(tmpentry, snapshot);
2293 : }
2294 :
2295 8540 : if (shadow_copy2_data == NULL) {
2296 116 : continue;
2297 : }
2298 :
2299 8424 : if (!labels) {
2300 : /* the caller doesn't want the labels */
2301 4215 : shadow_copy2_data->num_volumes++;
2302 4215 : continue;
2303 : }
2304 :
2305 4209 : tlabels = talloc_realloc(shadow_copy2_data,
2306 : shadow_copy2_data->labels,
2307 : SHADOW_COPY_LABEL,
2308 : shadow_copy2_data->num_volumes+1);
2309 4209 : if (tlabels == NULL) {
2310 0 : DEBUG(0,("shadow_copy2: out of memory\n"));
2311 0 : goto done;
2312 : }
2313 :
2314 4209 : strlcpy(tlabels[shadow_copy2_data->num_volumes], snapshot,
2315 : sizeof(*tlabels));
2316 :
2317 4209 : shadow_copy2_data->num_volumes++;
2318 4209 : shadow_copy2_data->labels = tlabels;
2319 : }
2320 :
2321 2860 : shadow_copy2_sort_data(handle, shadow_copy2_data);
2322 2860 : ret = 0;
2323 :
2324 2860 : done:
2325 2860 : if (ret != 0) {
2326 0 : saved_errno = errno;
2327 : }
2328 2860 : TALLOC_FREE(fspcwd );
2329 2860 : if (p != NULL) {
2330 2860 : SMB_VFS_NEXT_CLOSEDIR(handle, p);
2331 2860 : p = NULL;
2332 2860 : if (dirfsp != NULL) {
2333 : /*
2334 : * VFS_CLOSEDIR implicitly
2335 : * closed the associated fd.
2336 : */
2337 2860 : fsp_set_fd(dirfsp, -1);
2338 : }
2339 : }
2340 2860 : if (dirfsp != NULL) {
2341 2860 : fd_close(dirfsp);
2342 2860 : file_free(NULL, dirfsp);
2343 : }
2344 2860 : TALLOC_FREE(tmp_ctx);
2345 2860 : if (saved_errno != 0) {
2346 0 : errno = saved_errno;
2347 : }
2348 2860 : return ret;
2349 : }
2350 :
2351 10 : static int shadow_copy2_mkdirat(vfs_handle_struct *handle,
2352 : struct files_struct *dirfsp,
2353 : const struct smb_filename *smb_fname,
2354 : mode_t mode)
2355 : {
2356 10 : struct smb_filename *full_fname = NULL;
2357 10 : time_t timestamp = 0;
2358 :
2359 10 : full_fname = full_path_from_dirfsp_atname(talloc_tos(),
2360 : dirfsp,
2361 : smb_fname);
2362 10 : if (full_fname == NULL) {
2363 0 : errno = ENOMEM;
2364 0 : return -1;
2365 : }
2366 :
2367 10 : if (!shadow_copy2_strip_snapshot(talloc_tos(),
2368 : handle,
2369 : full_fname,
2370 : ×tamp,
2371 : NULL)) {
2372 0 : TALLOC_FREE(full_fname);
2373 0 : return -1;
2374 : }
2375 10 : TALLOC_FREE(full_fname);
2376 10 : if (timestamp != 0) {
2377 0 : errno = EROFS;
2378 0 : return -1;
2379 : }
2380 10 : return SMB_VFS_NEXT_MKDIRAT(handle,
2381 : dirfsp,
2382 : smb_fname,
2383 : mode);
2384 : }
2385 :
2386 0 : static int shadow_copy2_fchflags(vfs_handle_struct *handle,
2387 : struct files_struct *fsp,
2388 : unsigned int flags)
2389 : {
2390 0 : time_t timestamp = 0;
2391 :
2392 0 : if (!shadow_copy2_strip_snapshot(talloc_tos(),
2393 : handle,
2394 : fsp->fsp_name,
2395 : ×tamp,
2396 : NULL)) {
2397 0 : return -1;
2398 : }
2399 0 : if (timestamp != 0) {
2400 0 : errno = EROFS;
2401 0 : return -1;
2402 : }
2403 0 : return SMB_VFS_NEXT_FCHFLAGS(handle, fsp, flags);
2404 : }
2405 :
2406 18 : static int shadow_copy2_fsetxattr(struct vfs_handle_struct *handle,
2407 : struct files_struct *fsp,
2408 : const char *aname, const void *value,
2409 : size_t size, int flags)
2410 : {
2411 18 : time_t timestamp = 0;
2412 18 : const struct smb_filename *smb_fname = NULL;
2413 :
2414 18 : smb_fname = fsp->fsp_name;
2415 18 : if (!shadow_copy2_strip_snapshot(talloc_tos(),
2416 : handle,
2417 : smb_fname,
2418 : ×tamp,
2419 : NULL)) {
2420 0 : return -1;
2421 : }
2422 18 : if (timestamp != 0) {
2423 0 : errno = EROFS;
2424 0 : return -1;
2425 : }
2426 18 : return SMB_VFS_NEXT_FSETXATTR(handle, fsp,
2427 : aname, value, size, flags);
2428 : }
2429 :
2430 0 : static NTSTATUS shadow_copy2_create_dfs_pathat(struct vfs_handle_struct *handle,
2431 : struct files_struct *dirfsp,
2432 : const struct smb_filename *smb_fname,
2433 : const struct referral *reflist,
2434 : size_t referral_count)
2435 : {
2436 0 : time_t timestamp = 0;
2437 :
2438 0 : if (!shadow_copy2_strip_snapshot(talloc_tos(),
2439 : handle,
2440 : smb_fname,
2441 : ×tamp,
2442 : NULL)) {
2443 0 : return NT_STATUS_NO_MEMORY;
2444 : }
2445 0 : if (timestamp != 0) {
2446 0 : return NT_STATUS_MEDIA_WRITE_PROTECTED;
2447 : }
2448 0 : return SMB_VFS_NEXT_CREATE_DFS_PATHAT(handle,
2449 : dirfsp,
2450 : smb_fname,
2451 : reflist,
2452 : referral_count);
2453 : }
2454 :
2455 0 : static NTSTATUS shadow_copy2_read_dfs_pathat(struct vfs_handle_struct *handle,
2456 : TALLOC_CTX *mem_ctx,
2457 : struct files_struct *dirfsp,
2458 : struct smb_filename *smb_fname,
2459 : struct referral **ppreflist,
2460 : size_t *preferral_count)
2461 : {
2462 0 : time_t timestamp = 0;
2463 0 : char *stripped = NULL;
2464 0 : struct smb_filename *full_fname = NULL;
2465 0 : struct smb_filename *conv = NULL;
2466 : NTSTATUS status;
2467 :
2468 0 : full_fname = full_path_from_dirfsp_atname(talloc_tos(),
2469 : dirfsp,
2470 : smb_fname);
2471 0 : if (full_fname == NULL) {
2472 0 : return NT_STATUS_NO_MEMORY;
2473 : }
2474 :
2475 0 : if (!shadow_copy2_strip_snapshot(mem_ctx,
2476 : handle,
2477 : full_fname,
2478 : ×tamp,
2479 : &stripped)) {
2480 0 : TALLOC_FREE(full_fname);
2481 0 : return NT_STATUS_NO_MEMORY;
2482 : }
2483 0 : if (timestamp == 0) {
2484 0 : TALLOC_FREE(full_fname);
2485 0 : TALLOC_FREE(stripped);
2486 0 : return SMB_VFS_NEXT_READ_DFS_PATHAT(handle,
2487 : mem_ctx,
2488 : dirfsp,
2489 : smb_fname,
2490 : ppreflist,
2491 : preferral_count);
2492 : }
2493 :
2494 0 : conv = cp_smb_filename(mem_ctx, full_fname);
2495 0 : if (conv == NULL) {
2496 0 : TALLOC_FREE(full_fname);
2497 0 : TALLOC_FREE(stripped);
2498 0 : return NT_STATUS_NO_MEMORY;
2499 : }
2500 0 : TALLOC_FREE(full_fname);
2501 0 : conv->base_name = shadow_copy2_convert(conv,
2502 : handle,
2503 : stripped,
2504 : timestamp);
2505 0 : TALLOC_FREE(stripped);
2506 0 : if (conv->base_name == NULL) {
2507 0 : TALLOC_FREE(conv);
2508 0 : return NT_STATUS_NO_MEMORY;
2509 : }
2510 :
2511 0 : status = SMB_VFS_NEXT_READ_DFS_PATHAT(handle,
2512 : mem_ctx,
2513 : handle->conn->cwd_fsp,
2514 : conv,
2515 : ppreflist,
2516 : preferral_count);
2517 :
2518 0 : if (NT_STATUS_IS_OK(status)) {
2519 : /* Return any stat(2) info. */
2520 0 : smb_fname->st = conv->st;
2521 : }
2522 :
2523 0 : TALLOC_FREE(conv);
2524 0 : return status;
2525 : }
2526 :
2527 8063 : static const char *shadow_copy2_connectpath(
2528 : struct vfs_handle_struct *handle,
2529 : const struct files_struct *dirfsp,
2530 : const struct smb_filename *smb_fname_in)
2531 : {
2532 8063 : time_t timestamp = 0;
2533 8063 : char *stripped = NULL;
2534 8063 : char *tmp = NULL;
2535 8063 : const char *fname = smb_fname_in->base_name;
2536 8063 : const struct smb_filename *full = NULL;
2537 8063 : struct smb_filename smb_fname = {0};
2538 8063 : struct smb_filename *result_fname = NULL;
2539 8063 : char *result = NULL;
2540 8063 : char *parent_dir = NULL;
2541 8063 : int saved_errno = 0;
2542 8063 : size_t rootpath_len = 0;
2543 8063 : struct shadow_copy2_private *priv = NULL;
2544 :
2545 8063 : SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
2546 : return NULL);
2547 :
2548 8063 : DBG_DEBUG("Calc connect path for [%s]\n", fname);
2549 :
2550 8063 : if (priv->shadow_connectpath != NULL) {
2551 3 : DBG_DEBUG("cached connect path is [%s]\n",
2552 : priv->shadow_connectpath);
2553 3 : return priv->shadow_connectpath;
2554 : }
2555 :
2556 8060 : full = full_path_from_dirfsp_atname(
2557 : talloc_tos(), dirfsp, smb_fname_in);
2558 8060 : if (full == NULL) {
2559 0 : return NULL;
2560 : }
2561 :
2562 8060 : if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, full,
2563 : ×tamp, &stripped)) {
2564 0 : goto done;
2565 : }
2566 8060 : if (timestamp == 0) {
2567 6621 : return SMB_VFS_NEXT_CONNECTPATH(handle, dirfsp, smb_fname_in);
2568 : }
2569 :
2570 1439 : tmp = shadow_copy2_do_convert(talloc_tos(), handle, stripped, timestamp,
2571 : &rootpath_len);
2572 1439 : if (tmp == NULL) {
2573 0 : if (errno != ENOENT) {
2574 0 : goto done;
2575 : }
2576 :
2577 : /*
2578 : * If the converted path does not exist, and converting
2579 : * the parent yields something that does exist, then
2580 : * this path refers to something that has not been
2581 : * created yet, relative to the parent path.
2582 : * The snapshot finding is relative to the parent.
2583 : * (usually snapshots are read/only but this is not
2584 : * necessarily true).
2585 : * This code also covers getting a wildcard in the
2586 : * last component, because this function is called
2587 : * prior to sanitizing the path, and in SMB1 we may
2588 : * get wildcards in path names.
2589 : */
2590 0 : if (!parent_dirname(talloc_tos(), stripped, &parent_dir,
2591 : NULL)) {
2592 0 : errno = ENOMEM;
2593 0 : goto done;
2594 : }
2595 :
2596 0 : tmp = shadow_copy2_do_convert(talloc_tos(), handle, parent_dir,
2597 : timestamp, &rootpath_len);
2598 0 : if (tmp == NULL) {
2599 0 : goto done;
2600 : }
2601 : }
2602 :
2603 1439 : DBG_DEBUG("converted path is [%s] root path is [%.*s]\n", tmp,
2604 : (int)rootpath_len, tmp);
2605 :
2606 1439 : tmp[rootpath_len] = '\0';
2607 1439 : smb_fname = (struct smb_filename) { .base_name = tmp };
2608 :
2609 1439 : result_fname = SMB_VFS_NEXT_REALPATH(handle, priv, &smb_fname);
2610 1439 : if (result_fname == NULL) {
2611 0 : goto done;
2612 : }
2613 :
2614 : /*
2615 : * SMB_VFS_NEXT_REALPATH returns a talloc'ed string.
2616 : * Don't leak memory.
2617 : */
2618 1439 : TALLOC_FREE(priv->shadow_realpath);
2619 1439 : priv->shadow_realpath = result_fname;
2620 1439 : result = priv->shadow_realpath->base_name;
2621 :
2622 1439 : DBG_DEBUG("connect path is [%s]\n", result);
2623 :
2624 1439 : done:
2625 1439 : if (result == NULL) {
2626 0 : saved_errno = errno;
2627 : }
2628 1439 : TALLOC_FREE(tmp);
2629 1439 : TALLOC_FREE(stripped);
2630 1439 : TALLOC_FREE(parent_dir);
2631 1439 : if (saved_errno != 0) {
2632 0 : errno = saved_errno;
2633 : }
2634 1439 : return result;
2635 : }
2636 :
2637 11907 : static NTSTATUS shadow_copy2_parent_pathname(vfs_handle_struct *handle,
2638 : TALLOC_CTX *ctx,
2639 : const struct smb_filename *smb_fname_in,
2640 : struct smb_filename **parent_dir_out,
2641 : struct smb_filename **atname_out)
2642 : {
2643 11907 : time_t timestamp = 0;
2644 11907 : char *stripped = NULL;
2645 11907 : char *converted_name = NULL;
2646 11907 : struct smb_filename *smb_fname = NULL;
2647 11907 : struct smb_filename *parent = NULL;
2648 11907 : struct smb_filename *atname = NULL;
2649 11907 : struct shadow_copy2_private *priv = NULL;
2650 11907 : bool ok = false;
2651 11907 : bool is_converted = false;
2652 11907 : NTSTATUS status = NT_STATUS_OK;
2653 11907 : TALLOC_CTX *frame = NULL;
2654 :
2655 11907 : SMB_VFS_HANDLE_GET_DATA(handle,
2656 : priv,
2657 : struct shadow_copy2_private,
2658 : return NT_STATUS_INTERNAL_ERROR);
2659 :
2660 11907 : frame = talloc_stackframe();
2661 :
2662 11907 : smb_fname = cp_smb_filename(frame, smb_fname_in);
2663 11907 : if (smb_fname == NULL) {
2664 0 : status = NT_STATUS_NO_MEMORY;
2665 0 : goto fail;
2666 : }
2667 :
2668 : /* First, call the default PARENT_PATHNAME. */
2669 11907 : status = SMB_VFS_NEXT_PARENT_PATHNAME(handle,
2670 : frame,
2671 : smb_fname,
2672 : &parent,
2673 : &atname);
2674 11907 : if (!NT_STATUS_IS_OK(status)) {
2675 0 : goto fail;
2676 : }
2677 :
2678 11907 : if (parent->twrp == 0) {
2679 : /*
2680 : * Parent is not a snapshot path, return
2681 : * the regular result.
2682 : */
2683 9382 : status = NT_STATUS_OK;
2684 9382 : goto out;
2685 : }
2686 :
2687 : /* See if we can find a snapshot for the parent. */
2688 2525 : ok = shadow_copy2_strip_snapshot_converted(frame,
2689 : handle,
2690 : parent,
2691 : ×tamp,
2692 : &stripped,
2693 : &is_converted);
2694 2525 : if (!ok) {
2695 0 : status = map_nt_error_from_unix(errno);
2696 0 : goto fail;
2697 : }
2698 :
2699 2525 : if (is_converted) {
2700 : /*
2701 : * Already found snapshot for parent so wipe
2702 : * out the twrp.
2703 : */
2704 0 : parent->twrp = 0;
2705 0 : goto out;
2706 : }
2707 :
2708 2525 : converted_name = shadow_copy2_convert(frame,
2709 : handle,
2710 : stripped,
2711 : timestamp);
2712 :
2713 2525 : if (converted_name == NULL) {
2714 : /*
2715 : * Can't find snapshot for parent so wipe
2716 : * out the twrp.
2717 : */
2718 68 : parent->twrp = 0;
2719 : }
2720 :
2721 2457 : out:
2722 :
2723 11907 : *parent_dir_out = talloc_move(ctx, &parent);
2724 11907 : if (atname_out != NULL) {
2725 11906 : *atname_out = talloc_move(*parent_dir_out, &atname);
2726 : }
2727 :
2728 1 : fail:
2729 :
2730 11907 : TALLOC_FREE(frame);
2731 11907 : return status;
2732 : }
2733 :
2734 137 : static uint64_t shadow_copy2_disk_free(vfs_handle_struct *handle,
2735 : const struct smb_filename *smb_fname,
2736 : uint64_t *bsize,
2737 : uint64_t *dfree,
2738 : uint64_t *dsize)
2739 : {
2740 137 : time_t timestamp = 0;
2741 137 : char *stripped = NULL;
2742 137 : int saved_errno = 0;
2743 137 : char *conv = NULL;
2744 137 : struct smb_filename *conv_smb_fname = NULL;
2745 137 : uint64_t ret = (uint64_t)-1;
2746 :
2747 137 : if (!shadow_copy2_strip_snapshot(talloc_tos(),
2748 : handle,
2749 : smb_fname,
2750 : ×tamp,
2751 : &stripped)) {
2752 0 : return (uint64_t)-1;
2753 : }
2754 137 : if (timestamp == 0) {
2755 137 : return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
2756 : bsize, dfree, dsize);
2757 : }
2758 0 : conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
2759 0 : TALLOC_FREE(stripped);
2760 0 : if (conv == NULL) {
2761 0 : return (uint64_t)-1;
2762 : }
2763 0 : conv_smb_fname = synthetic_smb_fname(talloc_tos(),
2764 : conv,
2765 : NULL,
2766 : NULL,
2767 : 0,
2768 0 : smb_fname->flags);
2769 0 : if (conv_smb_fname == NULL) {
2770 0 : TALLOC_FREE(conv);
2771 0 : return (uint64_t)-1;
2772 : }
2773 0 : ret = SMB_VFS_NEXT_DISK_FREE(handle, conv_smb_fname,
2774 : bsize, dfree, dsize);
2775 0 : if (ret == (uint64_t)-1) {
2776 0 : saved_errno = errno;
2777 : }
2778 0 : TALLOC_FREE(conv);
2779 0 : TALLOC_FREE(conv_smb_fname);
2780 0 : if (saved_errno != 0) {
2781 0 : errno = saved_errno;
2782 : }
2783 0 : return ret;
2784 : }
2785 :
2786 274 : static int shadow_copy2_get_quota(vfs_handle_struct *handle,
2787 : const struct smb_filename *smb_fname,
2788 : enum SMB_QUOTA_TYPE qtype,
2789 : unid_t id,
2790 : SMB_DISK_QUOTA *dq)
2791 : {
2792 274 : time_t timestamp = 0;
2793 274 : char *stripped = NULL;
2794 : int ret;
2795 274 : int saved_errno = 0;
2796 : char *conv;
2797 274 : struct smb_filename *conv_smb_fname = NULL;
2798 :
2799 274 : if (!shadow_copy2_strip_snapshot(talloc_tos(),
2800 : handle,
2801 : smb_fname,
2802 : ×tamp,
2803 : &stripped)) {
2804 0 : return -1;
2805 : }
2806 274 : if (timestamp == 0) {
2807 274 : return SMB_VFS_NEXT_GET_QUOTA(handle, smb_fname, qtype, id, dq);
2808 : }
2809 :
2810 0 : conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
2811 0 : TALLOC_FREE(stripped);
2812 0 : if (conv == NULL) {
2813 0 : return -1;
2814 : }
2815 0 : conv_smb_fname = synthetic_smb_fname(talloc_tos(),
2816 : conv,
2817 : NULL,
2818 : NULL,
2819 : 0,
2820 0 : smb_fname->flags);
2821 0 : if (conv_smb_fname == NULL) {
2822 0 : TALLOC_FREE(conv);
2823 0 : return -1;
2824 : }
2825 0 : ret = SMB_VFS_NEXT_GET_QUOTA(handle, conv_smb_fname, qtype, id, dq);
2826 :
2827 0 : if (ret == -1) {
2828 0 : saved_errno = errno;
2829 : }
2830 0 : TALLOC_FREE(conv);
2831 0 : TALLOC_FREE(conv_smb_fname);
2832 0 : if (saved_errno != 0) {
2833 0 : errno = saved_errno;
2834 : }
2835 :
2836 0 : return ret;
2837 : }
2838 :
2839 0 : static ssize_t shadow_copy2_pwrite(vfs_handle_struct *handle,
2840 : files_struct *fsp,
2841 : const void *data,
2842 : size_t n,
2843 : off_t offset)
2844 : {
2845 : ssize_t nwritten;
2846 :
2847 0 : nwritten = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
2848 0 : if (nwritten == -1) {
2849 0 : if (errno == EBADF && fsp->fsp_flags.can_write) {
2850 0 : errno = EROFS;
2851 : }
2852 : }
2853 :
2854 0 : return nwritten;
2855 : }
2856 :
2857 : struct shadow_copy2_pwrite_state {
2858 : vfs_handle_struct *handle;
2859 : files_struct *fsp;
2860 : ssize_t ret;
2861 : struct vfs_aio_state vfs_aio_state;
2862 : };
2863 :
2864 : static void shadow_copy2_pwrite_done(struct tevent_req *subreq);
2865 :
2866 6 : static struct tevent_req *shadow_copy2_pwrite_send(
2867 : struct vfs_handle_struct *handle, TALLOC_CTX *mem_ctx,
2868 : struct tevent_context *ev, struct files_struct *fsp,
2869 : const void *data, size_t n, off_t offset)
2870 : {
2871 6 : struct tevent_req *req = NULL, *subreq = NULL;
2872 6 : struct shadow_copy2_pwrite_state *state = NULL;
2873 :
2874 6 : req = tevent_req_create(mem_ctx, &state,
2875 : struct shadow_copy2_pwrite_state);
2876 6 : if (req == NULL) {
2877 0 : return NULL;
2878 : }
2879 6 : state->handle = handle;
2880 6 : state->fsp = fsp;
2881 :
2882 6 : subreq = SMB_VFS_NEXT_PWRITE_SEND(state,
2883 : ev,
2884 : handle,
2885 : fsp,
2886 : data,
2887 : n,
2888 : offset);
2889 6 : if (tevent_req_nomem(subreq, req)) {
2890 0 : return tevent_req_post(req, ev);
2891 : }
2892 6 : tevent_req_set_callback(subreq, shadow_copy2_pwrite_done, req);
2893 :
2894 6 : return req;
2895 : }
2896 :
2897 6 : static void shadow_copy2_pwrite_done(struct tevent_req *subreq)
2898 : {
2899 6 : struct tevent_req *req = tevent_req_callback_data(
2900 : subreq, struct tevent_req);
2901 6 : struct shadow_copy2_pwrite_state *state = tevent_req_data(
2902 : req, struct shadow_copy2_pwrite_state);
2903 :
2904 6 : state->ret = SMB_VFS_PWRITE_RECV(subreq, &state->vfs_aio_state);
2905 6 : TALLOC_FREE(subreq);
2906 6 : if (state->ret == -1) {
2907 0 : tevent_req_error(req, state->vfs_aio_state.error);
2908 0 : return;
2909 : }
2910 :
2911 6 : tevent_req_done(req);
2912 : }
2913 :
2914 6 : static ssize_t shadow_copy2_pwrite_recv(struct tevent_req *req,
2915 : struct vfs_aio_state *vfs_aio_state)
2916 : {
2917 6 : struct shadow_copy2_pwrite_state *state = tevent_req_data(
2918 : req, struct shadow_copy2_pwrite_state);
2919 :
2920 6 : if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
2921 0 : if ((vfs_aio_state->error == EBADF) &&
2922 0 : state->fsp->fsp_flags.can_write)
2923 : {
2924 0 : vfs_aio_state->error = EROFS;
2925 0 : errno = EROFS;
2926 : }
2927 0 : return -1;
2928 : }
2929 :
2930 6 : *vfs_aio_state = state->vfs_aio_state;
2931 6 : return state->ret;
2932 : }
2933 :
2934 2724 : static int shadow_copy2_connect(struct vfs_handle_struct *handle,
2935 : const char *service, const char *user)
2936 : {
2937 : struct shadow_copy2_config *config;
2938 : struct shadow_copy2_private *priv;
2939 : int ret;
2940 : const char *snapdir;
2941 2724 : const char *snapprefix = NULL;
2942 : const char *delimiter;
2943 : const char *gmt_format;
2944 : const char *sort_order;
2945 2724 : const char *basedir = NULL;
2946 2724 : const char *snapsharepath = NULL;
2947 : const char *mount_point;
2948 :
2949 2724 : DBG_DEBUG("cnum[%" PRIu32 "], connectpath[%s]\n",
2950 : handle->conn->cnum,
2951 : handle->conn->connectpath);
2952 :
2953 2724 : ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
2954 2724 : if (ret < 0) {
2955 0 : return ret;
2956 : }
2957 :
2958 2724 : priv = talloc_zero(handle->conn, struct shadow_copy2_private);
2959 2724 : if (priv == NULL) {
2960 0 : DBG_ERR("talloc_zero() failed\n");
2961 0 : errno = ENOMEM;
2962 0 : return -1;
2963 : }
2964 :
2965 2724 : priv->snaps = talloc_zero(priv, struct shadow_copy2_snaplist_info);
2966 2724 : if (priv->snaps == NULL) {
2967 0 : DBG_ERR("talloc_zero() failed\n");
2968 0 : errno = ENOMEM;
2969 0 : return -1;
2970 : }
2971 :
2972 2724 : config = talloc_zero(priv, struct shadow_copy2_config);
2973 2724 : if (config == NULL) {
2974 0 : DEBUG(0, ("talloc_zero() failed\n"));
2975 0 : errno = ENOMEM;
2976 0 : return -1;
2977 : }
2978 :
2979 2724 : priv->config = config;
2980 :
2981 2724 : gmt_format = lp_parm_const_string(SNUM(handle->conn),
2982 : "shadow", "format",
2983 : GMT_FORMAT);
2984 2724 : config->gmt_format = talloc_strdup(config, gmt_format);
2985 2724 : if (config->gmt_format == NULL) {
2986 0 : DEBUG(0, ("talloc_strdup() failed\n"));
2987 0 : errno = ENOMEM;
2988 0 : return -1;
2989 : }
2990 :
2991 : /* config->gmt_format must not contain a path separator. */
2992 2724 : if (strchr(config->gmt_format, '/') != NULL) {
2993 0 : DEBUG(0, ("shadow:format %s must not contain a /"
2994 : "character. Unable to initialize module.\n",
2995 : config->gmt_format));
2996 0 : errno = EINVAL;
2997 0 : return -1;
2998 : }
2999 :
3000 2724 : config->use_sscanf = lp_parm_bool(SNUM(handle->conn),
3001 : "shadow", "sscanf", false);
3002 :
3003 2724 : config->use_localtime = lp_parm_bool(SNUM(handle->conn),
3004 : "shadow", "localtime",
3005 : false);
3006 :
3007 2724 : snapdir = lp_parm_const_string(SNUM(handle->conn),
3008 : "shadow", "snapdir",
3009 : ".snapshots");
3010 2724 : config->snapdir = talloc_strdup(config, snapdir);
3011 2724 : if (config->snapdir == NULL) {
3012 0 : DEBUG(0, ("talloc_strdup() failed\n"));
3013 0 : errno = ENOMEM;
3014 0 : return -1;
3015 : }
3016 :
3017 2724 : snapprefix = lp_parm_const_string(SNUM(handle->conn),
3018 : "shadow", "snapprefix",
3019 : NULL);
3020 2724 : if (snapprefix != NULL) {
3021 72 : priv->snaps->regex = talloc_zero(priv->snaps, regex_t);
3022 72 : if (priv->snaps->regex == NULL) {
3023 0 : DBG_ERR("talloc_zero() failed\n");
3024 0 : errno = ENOMEM;
3025 0 : return -1;
3026 : }
3027 :
3028 : /* pre-compute regex rule for matching pattern later */
3029 72 : ret = regcomp(priv->snaps->regex, snapprefix, 0);
3030 72 : if (ret) {
3031 0 : DBG_ERR("Failed to create regex object\n");
3032 0 : return -1;
3033 : }
3034 : }
3035 :
3036 2724 : delimiter = lp_parm_const_string(SNUM(handle->conn),
3037 : "shadow", "delimiter",
3038 : "_GMT");
3039 2724 : if (delimiter != NULL) {
3040 2724 : priv->config->delimiter = talloc_strdup(priv->config, delimiter);
3041 2724 : if (priv->config->delimiter == NULL) {
3042 0 : DBG_ERR("talloc_strdup() failed\n");
3043 0 : errno = ENOMEM;
3044 0 : return -1;
3045 : }
3046 : }
3047 :
3048 2724 : config->snapdirseverywhere = lp_parm_bool(SNUM(handle->conn),
3049 : "shadow",
3050 : "snapdirseverywhere",
3051 : false);
3052 :
3053 2724 : config->crossmountpoints = lp_parm_bool(SNUM(handle->conn),
3054 : "shadow", "crossmountpoints",
3055 : false);
3056 :
3057 2724 : if (config->crossmountpoints && !config->snapdirseverywhere) {
3058 0 : DBG_WARNING("Warning: 'crossmountpoints' depends on "
3059 : "'snapdirseverywhere'. Disabling crossmountpoints.\n");
3060 : }
3061 :
3062 2724 : config->fixinodes = lp_parm_bool(SNUM(handle->conn),
3063 : "shadow", "fixinodes",
3064 : false);
3065 :
3066 2724 : sort_order = lp_parm_const_string(SNUM(handle->conn),
3067 : "shadow", "sort", "desc");
3068 2724 : config->sort_order = talloc_strdup(config, sort_order);
3069 2724 : if (config->sort_order == NULL) {
3070 0 : DEBUG(0, ("talloc_strdup() failed\n"));
3071 0 : errno = ENOMEM;
3072 0 : return -1;
3073 : }
3074 :
3075 2724 : mount_point = lp_parm_const_string(SNUM(handle->conn),
3076 : "shadow", "mountpoint", NULL);
3077 2724 : if (mount_point != NULL) {
3078 2606 : if (mount_point[0] != '/') {
3079 0 : DBG_WARNING("Warning: 'mountpoint' is relative "
3080 : "('%s'), but it has to be an absolute "
3081 : "path. Ignoring provided value.\n",
3082 : mount_point);
3083 0 : mount_point = NULL;
3084 : } else {
3085 : char *p;
3086 2606 : p = strstr(handle->conn->connectpath, mount_point);
3087 2606 : if (p != handle->conn->connectpath) {
3088 0 : DBG_WARNING("Warning: the share root (%s) is "
3089 : "not a subdirectory of the "
3090 : "specified mountpoint (%s). "
3091 : "Ignoring provided value.\n",
3092 : handle->conn->connectpath,
3093 : mount_point);
3094 0 : mount_point = NULL;
3095 : }
3096 : }
3097 : }
3098 :
3099 2724 : if (mount_point != NULL) {
3100 2606 : config->mount_point = talloc_strdup(config, mount_point);
3101 2606 : if (config->mount_point == NULL) {
3102 0 : DBG_ERR("talloc_strdup() failed\n");
3103 0 : return -1;
3104 : }
3105 : } else {
3106 118 : config->mount_point = shadow_copy2_find_mount_point(config,
3107 : handle);
3108 118 : if (config->mount_point == NULL) {
3109 0 : DBG_WARNING("shadow_copy2_find_mount_point "
3110 : "of the share root '%s' failed: %s\n",
3111 : handle->conn->connectpath, strerror(errno));
3112 0 : return -1;
3113 : }
3114 : }
3115 :
3116 2724 : basedir = lp_parm_const_string(SNUM(handle->conn),
3117 : "shadow", "basedir", NULL);
3118 :
3119 2724 : if (basedir != NULL) {
3120 588 : if (basedir[0] != '/') {
3121 0 : DBG_WARNING("Warning: 'basedir' is "
3122 : "relative ('%s'), but it has to be an "
3123 : "absolute path. Disabling basedir.\n",
3124 : basedir);
3125 0 : basedir = NULL;
3126 : } else {
3127 : char *p;
3128 588 : p = strstr(basedir, config->mount_point);
3129 588 : if (p != basedir) {
3130 0 : DEBUG(1, ("Warning: basedir (%s) is not a "
3131 : "subdirectory of the share root's "
3132 : "mount point (%s). "
3133 : "Disabling basedir\n",
3134 : basedir, config->mount_point));
3135 0 : basedir = NULL;
3136 : }
3137 : }
3138 : }
3139 :
3140 2724 : if (config->snapdirseverywhere && basedir != NULL) {
3141 0 : DBG_WARNING("Warning: 'basedir' is incompatible "
3142 : "with 'snapdirseverywhere'. Disabling basedir.\n");
3143 0 : basedir = NULL;
3144 : }
3145 :
3146 2724 : snapsharepath = lp_parm_const_string(SNUM(handle->conn), "shadow",
3147 : "snapsharepath", NULL);
3148 2724 : if (snapsharepath != NULL) {
3149 202 : if (snapsharepath[0] == '/') {
3150 0 : DBG_WARNING("Warning: 'snapsharepath' is "
3151 : "absolute ('%s'), but it has to be a "
3152 : "relative path. Disabling snapsharepath.\n",
3153 : snapsharepath);
3154 0 : snapsharepath = NULL;
3155 : }
3156 202 : if (config->snapdirseverywhere && snapsharepath != NULL) {
3157 0 : DBG_WARNING("Warning: 'snapsharepath' is incompatible "
3158 : "with 'snapdirseverywhere'. Disabling "
3159 : "snapsharepath.\n");
3160 0 : snapsharepath = NULL;
3161 : }
3162 : }
3163 :
3164 2724 : if (basedir != NULL && snapsharepath != NULL) {
3165 0 : DBG_WARNING("Warning: 'snapsharepath' is incompatible with "
3166 : "'basedir'. Disabling snapsharepath\n");
3167 0 : snapsharepath = NULL;
3168 : }
3169 :
3170 2724 : if (snapsharepath != NULL) {
3171 202 : config->rel_connectpath = talloc_strdup(config, snapsharepath);
3172 202 : if (config->rel_connectpath == NULL) {
3173 0 : DBG_ERR("talloc_strdup() failed\n");
3174 0 : errno = ENOMEM;
3175 0 : return -1;
3176 : }
3177 : }
3178 :
3179 2724 : if (basedir == NULL) {
3180 2136 : basedir = config->mount_point;
3181 : }
3182 :
3183 2724 : if (config->rel_connectpath == NULL &&
3184 2522 : strlen(basedir) < strlen(handle->conn->connectpath)) {
3185 4204 : config->rel_connectpath = talloc_strdup(config,
3186 2102 : handle->conn->connectpath + strlen(basedir));
3187 2102 : if (config->rel_connectpath == NULL) {
3188 0 : DEBUG(0, ("talloc_strdup() failed\n"));
3189 0 : errno = ENOMEM;
3190 0 : return -1;
3191 : }
3192 : }
3193 :
3194 2724 : if (config->snapdir[0] == '/') {
3195 1300 : config->snapdir_absolute = true;
3196 :
3197 1300 : if (config->snapdirseverywhere) {
3198 0 : DBG_WARNING("Warning: An absolute snapdir is "
3199 : "incompatible with 'snapdirseverywhere', "
3200 : "setting 'snapdirseverywhere' to "
3201 : "false.\n");
3202 0 : config->snapdirseverywhere = false;
3203 : }
3204 :
3205 1300 : if (config->crossmountpoints) {
3206 0 : DBG_WARNING("Warning: 'crossmountpoints' is not "
3207 : "supported with an absolute snapdir. "
3208 : "Disabling it.\n");
3209 0 : config->crossmountpoints = false;
3210 : }
3211 :
3212 1300 : config->snapshot_basepath = config->snapdir;
3213 : } else {
3214 1424 : config->snapshot_basepath = talloc_asprintf(config, "%s/%s",
3215 : config->mount_point, config->snapdir);
3216 1424 : if (config->snapshot_basepath == NULL) {
3217 0 : DEBUG(0, ("talloc_asprintf() failed\n"));
3218 0 : errno = ENOMEM;
3219 0 : return -1;
3220 : }
3221 : }
3222 :
3223 2724 : trim_string(config->mount_point, NULL, "/");
3224 2724 : trim_string(config->rel_connectpath, "/", "/");
3225 2724 : trim_string(config->snapdir, NULL, "/");
3226 2724 : trim_string(config->snapshot_basepath, NULL, "/");
3227 :
3228 2724 : DEBUG(10, ("shadow_copy2_connect: configuration:\n"
3229 : " share root: '%s'\n"
3230 : " mountpoint: '%s'\n"
3231 : " rel share root: '%s'\n"
3232 : " snapdir: '%s'\n"
3233 : " snapprefix: '%s'\n"
3234 : " delimiter: '%s'\n"
3235 : " snapshot base path: '%s'\n"
3236 : " format: '%s'\n"
3237 : " use sscanf: %s\n"
3238 : " snapdirs everywhere: %s\n"
3239 : " cross mountpoints: %s\n"
3240 : " fix inodes: %s\n"
3241 : " sort order: %s\n"
3242 : "",
3243 : handle->conn->connectpath,
3244 : config->mount_point,
3245 : config->rel_connectpath,
3246 : config->snapdir,
3247 : snapprefix,
3248 : config->delimiter,
3249 : config->snapshot_basepath,
3250 : config->gmt_format,
3251 : config->use_sscanf ? "yes" : "no",
3252 : config->snapdirseverywhere ? "yes" : "no",
3253 : config->crossmountpoints ? "yes" : "no",
3254 : config->fixinodes ? "yes" : "no",
3255 : config->sort_order
3256 : ));
3257 :
3258 :
3259 2724 : SMB_VFS_HANDLE_SET_DATA(handle, priv,
3260 : NULL, struct shadow_copy2_private,
3261 : return -1);
3262 :
3263 2724 : return 0;
3264 : }
3265 :
3266 : static struct vfs_fn_pointers vfs_shadow_copy2_fns = {
3267 : .connect_fn = shadow_copy2_connect,
3268 : .disk_free_fn = shadow_copy2_disk_free,
3269 : .get_quota_fn = shadow_copy2_get_quota,
3270 : .create_dfs_pathat_fn = shadow_copy2_create_dfs_pathat,
3271 : .read_dfs_pathat_fn = shadow_copy2_read_dfs_pathat,
3272 : .renameat_fn = shadow_copy2_renameat,
3273 : .linkat_fn = shadow_copy2_linkat,
3274 : .symlinkat_fn = shadow_copy2_symlinkat,
3275 : .stat_fn = shadow_copy2_stat,
3276 : .lstat_fn = shadow_copy2_lstat,
3277 : .fstat_fn = shadow_copy2_fstat,
3278 : .fstatat_fn = shadow_copy2_fstatat,
3279 : .openat_fn = shadow_copy2_openat,
3280 : .unlinkat_fn = shadow_copy2_unlinkat,
3281 : .fchmod_fn = shadow_copy2_fchmod,
3282 : .chdir_fn = shadow_copy2_chdir,
3283 : .fntimes_fn = shadow_copy2_fntimes,
3284 : .readlinkat_fn = shadow_copy2_readlinkat,
3285 : .mknodat_fn = shadow_copy2_mknodat,
3286 : .realpath_fn = shadow_copy2_realpath,
3287 : .get_shadow_copy_data_fn = shadow_copy2_get_shadow_copy_data,
3288 : .mkdirat_fn = shadow_copy2_mkdirat,
3289 : .fsetxattr_fn = shadow_copy2_fsetxattr,
3290 : .fchflags_fn = shadow_copy2_fchflags,
3291 : .pwrite_fn = shadow_copy2_pwrite,
3292 : .pwrite_send_fn = shadow_copy2_pwrite_send,
3293 : .pwrite_recv_fn = shadow_copy2_pwrite_recv,
3294 : .connectpath_fn = shadow_copy2_connectpath,
3295 : .parent_pathname_fn = shadow_copy2_parent_pathname,
3296 : };
3297 :
3298 : static_decl_vfs;
3299 2555 : NTSTATUS vfs_shadow_copy2_init(TALLOC_CTX *ctx)
3300 : {
3301 2555 : return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
3302 : "shadow_copy2", &vfs_shadow_copy2_fns);
3303 : }
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