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CVE-2023-3961:s3:torture: Add test SMB2-INVALID-PIPENAME to show we allow bad pipenam...
[Samba.git] / source3 / smbd / vfs.c
bloba34b908335284ecc3feeea79523715a3e3c94373
1 /*
2 Unix SMB/Netbios implementation.
3 Version 1.9.
4 VFS initialisation and support functions
5 Copyright (C) Tim Potter 1999
6 Copyright (C) Alexander Bokovoy 2002
7 Copyright (C) James Peach 2006
8 Copyright (C) Volker Lendecke 2009
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
22
23 This work was sponsored by Optifacio Software Services, Inc.
24 */
25
26 #include "includes.h"
27 #include "system/filesys.h"
28 #include "smbd/smbd.h"
29 #include "smbd/globals.h"
30 #include "../lib/util/memcache.h"
31 #include "transfer_file.h"
32 #include "ntioctl.h"
33 #include "lib/util/tevent_unix.h"
34 #include "lib/util/tevent_ntstatus.h"
35 #include "lib/util/sys_rw.h"
36
37 #undef DBGC_CLASS
38 #define DBGC_CLASS DBGC_VFS
39
40 static_decl_vfs;
41
42 struct vfs_fsp_data {
43 struct vfs_fsp_data *next;
44 struct vfs_handle_struct *owner;
45 void (*destroy)(void *p_data);
46 void *_dummy_;
47 /* NOTE: This structure contains four pointers so that we can guarantee
48 * that the end of the structure is always both 4-byte and 8-byte aligned.
49 */
50 };
51
52 struct vfs_init_function_entry {
53 char *name;
54 struct vfs_init_function_entry *prev, *next;
55 const struct vfs_fn_pointers *fns;
56 };
57
58 /****************************************************************************
59 maintain the list of available backends
60 ****************************************************************************/
61
62 static struct vfs_init_function_entry *vfs_find_backend_entry(const char *name)
63 {
64 struct vfs_init_function_entry *entry = backends;
65
66 DEBUG(10, ("vfs_find_backend_entry called for %s\n", name));
67
68 while(entry) {
69 if (strcmp(entry->name, name)==0) return entry;
70 entry = entry->next;
71 }
72
73 return NULL;
74 }
75
76 NTSTATUS smb_register_vfs(int version, const char *name,
77 const struct vfs_fn_pointers *fns)
78 {
79 struct vfs_init_function_entry *entry = backends;
80
81 if ((version != SMB_VFS_INTERFACE_VERSION)) {
82 DEBUG(0, ("Failed to register vfs module.\n"
83 "The module was compiled against SMB_VFS_INTERFACE_VERSION %d,\n"
84 "current SMB_VFS_INTERFACE_VERSION is %d.\n"
85 "Please recompile against the current Samba Version!\n",
86 version, SMB_VFS_INTERFACE_VERSION));
87 return NT_STATUS_OBJECT_TYPE_MISMATCH;
88 }
89
90 if (!name || !name[0]) {
91 DEBUG(0,("smb_register_vfs() called with NULL pointer or empty name!\n"));
92 return NT_STATUS_INVALID_PARAMETER;
93 }
94
95 if (vfs_find_backend_entry(name)) {
96 DEBUG(0,("VFS module %s already loaded!\n", name));
97 return NT_STATUS_OBJECT_NAME_COLLISION;
98 }
99
100 entry = SMB_XMALLOC_P(struct vfs_init_function_entry);
101 entry->name = smb_xstrdup(name);
102 entry->fns = fns;
103
104 DLIST_ADD(backends, entry);
105 DEBUG(5, ("Successfully added vfs backend '%s'\n", name));
106 return NT_STATUS_OK;
107 }
108
109 /****************************************************************************
110 initialise default vfs hooks
111 ****************************************************************************/
112
113 static void vfs_init_default(connection_struct *conn)
114 {
115 DEBUG(3, ("Initialising default vfs hooks\n"));
116 vfs_init_custom(conn, DEFAULT_VFS_MODULE_NAME);
117 }
118
119 /****************************************************************************
120 initialise custom vfs hooks
121 ****************************************************************************/
122
123 bool vfs_init_custom(connection_struct *conn, const char *vfs_object)
124 {
125 char *module_path = NULL;
126 char *module_name = NULL;
127 char *module_param = NULL, *p;
128 vfs_handle_struct *handle;
129 const struct vfs_init_function_entry *entry;
130
131 if (!conn||!vfs_object||!vfs_object[0]) {
132 DEBUG(0, ("vfs_init_custom() called with NULL pointer or "
133 "empty vfs_object!\n"));
134 return False;
135 }
136
137 if(!backends) {
138 static_init_vfs(NULL);
139 }
140
141 DEBUG(3, ("Initialising custom vfs hooks from [%s]\n", vfs_object));
142
143 module_path = smb_xstrdup(vfs_object);
144
145 p = strchr_m(module_path, ':');
146
147 if (p) {
148 *p = 0;
149 module_param = p+1;
150 trim_char(module_param, ' ', ' ');
151 }
152
153 trim_char(module_path, ' ', ' ');
154
155 module_name = smb_xstrdup(module_path);
156
157 if ((module_name[0] == '/') &&
158 (strcmp(module_path, DEFAULT_VFS_MODULE_NAME) != 0)) {
159
160 /*
161 * Extract the module name from the path. Just use the base
162 * name of the last path component.
163 */
164
165 SAFE_FREE(module_name);
166 module_name = smb_xstrdup(strrchr_m(module_path, '/')+1);
167
168 p = strchr_m(module_name, '.');
169
170 if (p != NULL) {
171 *p = '\0';
172 }
173 }
174
175 /* First, try to load the module with the new module system */
176 entry = vfs_find_backend_entry(module_name);
177 if (!entry) {
178 NTSTATUS status;
179
180 DEBUG(5, ("vfs module [%s] not loaded - trying to load...\n",
181 vfs_object));
182
183 status = smb_load_module("vfs", module_path);
184 if (!NT_STATUS_IS_OK(status)) {
185 DEBUG(0, ("error probing vfs module '%s': %s\n",
186 module_path, nt_errstr(status)));
187 goto fail;
188 }
189
190 entry = vfs_find_backend_entry(module_name);
191 if (!entry) {
192 DEBUG(0,("Can't find a vfs module [%s]\n",vfs_object));
193 goto fail;
194 }
195 }
196
197 DEBUGADD(5,("Successfully loaded vfs module [%s] with the new modules system\n", vfs_object));
198
199 handle = talloc_zero(conn, vfs_handle_struct);
200 if (!handle) {
201 DEBUG(0,("TALLOC_ZERO() failed!\n"));
202 goto fail;
203 }
204 handle->conn = conn;
205 handle->fns = entry->fns;
206 if (module_param) {
207 handle->param = talloc_strdup(conn, module_param);
208 }
209 DLIST_ADD(conn->vfs_handles, handle);
210
211 SAFE_FREE(module_path);
212 SAFE_FREE(module_name);
213 return True;
214
215 fail:
216 SAFE_FREE(module_path);
217 SAFE_FREE(module_name);
218 return False;
219 }
220
221 /*****************************************************************
222 Allow VFS modules to extend files_struct with VFS-specific state.
223 This will be ok for small numbers of extensions, but might need to
224 be refactored if it becomes more widely used.
225 ******************************************************************/
226
227 #define EXT_DATA_AREA(e) ((uint8_t *)(e) + sizeof(struct vfs_fsp_data))
228
229 void *vfs_add_fsp_extension_notype(vfs_handle_struct *handle,
230 files_struct *fsp, size_t ext_size,
231 void (*destroy_fn)(void *p_data))
232 {
233 struct vfs_fsp_data *ext;
234 void * ext_data;
235
236 /* Prevent VFS modules adding multiple extensions. */
237 if ((ext_data = vfs_fetch_fsp_extension(handle, fsp))) {
238 return ext_data;
239 }
240
241 ext = talloc_zero_size(
242 handle->conn, sizeof(struct vfs_fsp_data) + ext_size);
243 if (ext == NULL) {
244 return NULL;
245 }
246
247 ext->owner = handle;
248 ext->next = fsp->vfs_extension;
249 ext->destroy = destroy_fn;
250 fsp->vfs_extension = ext;
251 return EXT_DATA_AREA(ext);
252 }
253
254 void vfs_remove_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
255 {
256 struct vfs_fsp_data *curr;
257 struct vfs_fsp_data *prev;
258
259 for (curr = fsp->vfs_extension, prev = NULL;
260 curr;
261 prev = curr, curr = curr->next) {
262 if (curr->owner == handle) {
263 if (prev) {
264 prev->next = curr->next;
265 } else {
266 fsp->vfs_extension = curr->next;
267 }
268 if (curr->destroy) {
269 curr->destroy(EXT_DATA_AREA(curr));
270 }
271 TALLOC_FREE(curr);
272 return;
273 }
274 }
275 }
276
277 void vfs_remove_all_fsp_extensions(files_struct *fsp)
278 {
279 struct vfs_fsp_data *curr;
280 struct vfs_fsp_data *next;
281
282 for (curr = fsp->vfs_extension; curr; curr = next) {
283
284 next = curr->next;
285 fsp->vfs_extension = next;
286
287 if (curr->destroy) {
288 curr->destroy(EXT_DATA_AREA(curr));
289 }
290 TALLOC_FREE(curr);
291 }
292 }
293
294 void *vfs_memctx_fsp_extension(vfs_handle_struct *handle,
295 const struct files_struct *fsp)
296 {
297 struct vfs_fsp_data *head;
298
299 for (head = fsp->vfs_extension; head; head = head->next) {
300 if (head->owner == handle) {
301 return head;
302 }
303 }
304
305 return NULL;
306 }
307
308 void *vfs_fetch_fsp_extension(vfs_handle_struct *handle,
309 const struct files_struct *fsp)
310 {
311 struct vfs_fsp_data *head;
312
313 head = (struct vfs_fsp_data *)vfs_memctx_fsp_extension(handle, fsp);
314 if (head != NULL) {
315 return EXT_DATA_AREA(head);
316 }
317
318 return NULL;
319 }
320
321 #undef EXT_DATA_AREA
322
323 /*
324 * Ensure this module catches all VFS functions.
325 */
326 #ifdef DEVELOPER
327 void smb_vfs_assert_all_fns(const struct vfs_fn_pointers* fns,
328 const char *module)
329 {
330 bool missing_fn = false;
331 unsigned int idx;
332 const uintptr_t *end = (const uintptr_t *)(fns + 1);
333
334 for (idx = 0; ((const uintptr_t *)fns + idx) < end; idx++) {
335 if (*((const uintptr_t *)fns + idx) == 0) {
336 DBG_ERR("VFS function at index %d not implemented "
337 "in module %s\n", idx, module);
338 missing_fn = true;
339 }
340 }
341
342 if (missing_fn) {
343 smb_panic("Required VFS function not implemented in module.\n");
344 }
345 }
346 #else
347 void smb_vfs_assert_all_fns(const struct vfs_fn_pointers* fns,
348 const char *module)
349 {
350 }
351 #endif
352
353 /*****************************************************************
354 Generic VFS init.
355 ******************************************************************/
356
357 bool smbd_vfs_init(connection_struct *conn)
358 {
359 const char **vfs_objects;
360 unsigned int i = 0;
361 int j = 0;
362
363 /* Normal share - initialise with disk access functions */
364 vfs_init_default(conn);
365
366 /* No need to load vfs modules for printer connections */
367 if (conn->printer) {
368 return True;
369 }
370
371 if (lp_widelinks(SNUM(conn))) {
372 /*
373 * As the widelinks logic is now moving into a
374 * vfs_widelinks module, we need to custom load
375 * it after the default module is initialized.
376 * That way no changes to smb.conf files are
377 * needed.
378 */
379 bool ok = vfs_init_custom(conn, "widelinks");
380 if (!ok) {
381 DBG_ERR("widelinks enabled and vfs_init_custom "
382 "failed for vfs_widelinks module\n");
383 return false;
384 }
385 }
386
387 vfs_objects = lp_vfs_objects(SNUM(conn));
388
389 /* Override VFS functions if 'vfs object' was not specified*/
390 if (!vfs_objects || !vfs_objects[0])
391 return True;
392
393 for (i=0; vfs_objects[i] ;) {
394 i++;
395 }
396
397 for (j=i-1; j >= 0; j--) {
398 if (!vfs_init_custom(conn, vfs_objects[j])) {
399 DEBUG(0, ("smbd_vfs_init: vfs_init_custom failed for %s\n", vfs_objects[j]));
400 return False;
401 }
402 }
403 return True;
404 }
405
406 /*******************************************************************
407 Check if a file exists in the vfs.
408 ********************************************************************/
409
410 NTSTATUS vfs_file_exist(connection_struct *conn, struct smb_filename *smb_fname)
411 {
412 /* Only return OK if stat was successful and S_ISREG */
413 if ((SMB_VFS_STAT(conn, smb_fname) != -1) &&
414 S_ISREG(smb_fname->st.st_ex_mode)) {
415 return NT_STATUS_OK;
416 }
417
418 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
419 }
420
421 bool vfs_valid_pread_range(off_t offset, size_t length)
422 {
423 return sys_valid_io_range(offset, length);
424 }
425
426 bool vfs_valid_pwrite_range(off_t offset, size_t length)
427 {
428 /*
429 * See MAXFILESIZE in [MS-FSA] 2.1.5.3 Server Requests a Write
430 */
431 static const uint64_t maxfilesize = 0xfffffff0000;
432 uint64_t last_byte_ofs;
433 bool ok;
434
435 ok = sys_valid_io_range(offset, length);
436 if (!ok) {
437 return false;
438 }
439
440 if (length == 0) {
441 return true;
442 }
443
444 last_byte_ofs = offset + length;
445 if (last_byte_ofs > maxfilesize) {
446 return false;
447 }
448
449 return true;
450 }
451
452 ssize_t vfs_pwrite_data(struct smb_request *req,
453 files_struct *fsp,
454 const char *buffer,
455 size_t N,
456 off_t offset)
457 {
458 size_t total=0;
459 ssize_t ret;
460 bool ok;
461
462 ok = vfs_valid_pwrite_range(offset, N);
463 if (!ok) {
464 errno = EINVAL;
465 return -1;
466 }
467
468 if (req && req->unread_bytes) {
469 int sockfd = req->xconn->transport.sock;
470 SMB_ASSERT(req->unread_bytes == N);
471 /* VFS_RECVFILE must drain the socket
472 * before returning. */
473 req->unread_bytes = 0;
474 /*
475 * Leave the socket non-blocking and
476 * use SMB_VFS_RECVFILE. If it returns
477 * EAGAIN || EWOULDBLOCK temporarily set
478 * the socket blocking and retry
479 * the RECVFILE.
480 */
481 while (total < N) {
482 ret = SMB_VFS_RECVFILE(sockfd,
483 fsp,
484 offset + total,
485 N - total);
486 if (ret == 0 || (ret == -1 &&
487 (errno == EAGAIN ||
488 errno == EWOULDBLOCK))) {
489 int old_flags;
490 /* Ensure the socket is blocking. */
491 old_flags = fcntl(sockfd, F_GETFL, 0);
492 if (set_blocking(sockfd, true) == -1) {
493 return (ssize_t)-1;
494 }
495 ret = SMB_VFS_RECVFILE(sockfd,
496 fsp,
497 offset + total,
498 N - total);
499 if (fcntl(sockfd, F_SETFL, old_flags) == -1) {
500 return (ssize_t)-1;
501 }
502 if (ret == -1) {
503 return (ssize_t)-1;
504 }
505 total += ret;
506 return (ssize_t)total;
507 }
508 /* Any other error case. */
509 if (ret == -1) {
510 return ret;
511 }
512 total += ret;
513 }
514 return (ssize_t)total;
515 }
516
517 while (total < N) {
518 ret = SMB_VFS_PWRITE(fsp, buffer + total, N - total,
519 offset + total);
520
521 if (ret == -1)
522 return -1;
523 if (ret == 0)
524 return total;
525
526 total += ret;
527 }
528 return (ssize_t)total;
529 }
530 /****************************************************************************
531 An allocate file space call using the vfs interface.
532 Allocates space for a file from a filedescriptor.
533 Returns 0 on success, -1 on failure.
534 ****************************************************************************/
535
536 int vfs_allocate_file_space(files_struct *fsp, uint64_t len)
537 {
538 int ret;
539 connection_struct *conn = fsp->conn;
540 uint64_t space_avail;
541 uint64_t bsize,dfree,dsize;
542 NTSTATUS status;
543 bool ok;
544
545 /*
546 * Actually try and commit the space on disk....
547 */
548
549 DEBUG(10,("vfs_allocate_file_space: file %s, len %.0f\n",
550 fsp_str_dbg(fsp), (double)len));
551
552 ok = vfs_valid_pwrite_range((off_t)len, 0);
553 if (!ok) {
554 DEBUG(0,("vfs_allocate_file_space: %s negative/invalid len "
555 "requested.\n", fsp_str_dbg(fsp)));
556 errno = EINVAL;
557 return -1;
558 }
559
560 status = vfs_stat_fsp(fsp);
561 if (!NT_STATUS_IS_OK(status)) {
562 return -1;
563 }
564
565 if (len == (uint64_t)fsp->fsp_name->st.st_ex_size)
566 return 0;
567
568 if (len < (uint64_t)fsp->fsp_name->st.st_ex_size) {
569 /* Shrink - use ftruncate. */
570
571 DEBUG(10,("vfs_allocate_file_space: file %s, shrink. Current "
572 "size %.0f\n", fsp_str_dbg(fsp),
573 (double)fsp->fsp_name->st.st_ex_size));
574
575 contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_ALLOC_SHRINK);
576
577 ret = SMB_VFS_FTRUNCATE(fsp, (off_t)len);
578
579 contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_ALLOC_SHRINK);
580
581 return ret;
582 }
583
584 /* Grow - we need to test if we have enough space. */
585
586 contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_ALLOC_GROW);
587
588 if (lp_strict_allocate(SNUM(fsp->conn))) {
589 /* See if we have a syscall that will allocate beyond
590 end-of-file without changing EOF. */
591 ret = SMB_VFS_FALLOCATE(fsp, VFS_FALLOCATE_FL_KEEP_SIZE,
592 0, len);
593 } else {
594 ret = 0;
595 }
596
597 contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_ALLOC_GROW);
598
599 if (ret == 0) {
600 /* We changed the allocation size on disk, but not
601 EOF - exactly as required. We're done ! */
602 return 0;
603 }
604
605 if (ret == -1 && errno == ENOSPC) {
606 return -1;
607 }
608
609 len -= fsp->fsp_name->st.st_ex_size;
610 len /= 1024; /* Len is now number of 1k blocks needed. */
611 space_avail =
612 get_dfree_info(conn, fsp->fsp_name, &bsize, &dfree, &dsize);
613 if (space_avail == (uint64_t)-1) {
614 return -1;
615 }
616
617 DEBUG(10,("vfs_allocate_file_space: file %s, grow. Current size %.0f, "
618 "needed blocks = %.0f, space avail = %.0f\n",
619 fsp_str_dbg(fsp), (double)fsp->fsp_name->st.st_ex_size, (double)len,
620 (double)space_avail));
621
622 if (len > space_avail) {
623 errno = ENOSPC;
624 return -1;
625 }
626
627 return 0;
628 }
629
630 /****************************************************************************
631 A vfs set_filelen call.
632 set the length of a file from a filedescriptor.
633 Returns 0 on success, -1 on failure.
634 ****************************************************************************/
635
636 int vfs_set_filelen(files_struct *fsp, off_t len)
637 {
638 int ret;
639 bool ok;
640
641 ok = vfs_valid_pwrite_range(len, 0);
642 if (!ok) {
643 errno = EINVAL;
644 return -1;
645 }
646
647 contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_SET_FILE_LEN);
648
649 DEBUG(10,("vfs_set_filelen: ftruncate %s to len %.0f\n",
650 fsp_str_dbg(fsp), (double)len));
651 if ((ret = SMB_VFS_FTRUNCATE(fsp, len)) != -1) {
652 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
653 FILE_NOTIFY_CHANGE_SIZE
654 | FILE_NOTIFY_CHANGE_ATTRIBUTES,
655 fsp->fsp_name->base_name);
656 }
657
658 contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_SET_FILE_LEN);
659
660 return ret;
661 }
662
663 /****************************************************************************
664 A slow version of fallocate. Fallback code if SMB_VFS_FALLOCATE
665 fails. Needs to be outside of the default version of SMB_VFS_FALLOCATE
666 as this is also called from the default SMB_VFS_FTRUNCATE code.
667 Always extends the file size.
668 Returns 0 on success, -1 on failure.
669 ****************************************************************************/
670
671 #define SPARSE_BUF_WRITE_SIZE (32*1024)
672
673 int vfs_slow_fallocate(files_struct *fsp, off_t offset, off_t len)
674 {
675 ssize_t pwrite_ret;
676 size_t total = 0;
677 bool ok;
678
679 ok = vfs_valid_pwrite_range(offset, len);
680 if (!ok) {
681 errno = EINVAL;
682 return -1;
683 }
684
685 if (!sparse_buf) {
686 sparse_buf = SMB_CALLOC_ARRAY(char, SPARSE_BUF_WRITE_SIZE);
687 if (!sparse_buf) {
688 errno = ENOMEM;
689 return -1;
690 }
691 }
692
693 while (total < len) {
694 size_t curr_write_size = MIN(SPARSE_BUF_WRITE_SIZE, (len - total));
695
696 pwrite_ret = SMB_VFS_PWRITE(fsp, sparse_buf, curr_write_size, offset + total);
697 if (pwrite_ret == -1) {
698 int saved_errno = errno;
699 DEBUG(10,("vfs_slow_fallocate: SMB_VFS_PWRITE for file "
700 "%s failed with error %s\n",
701 fsp_str_dbg(fsp), strerror(saved_errno)));
702 errno = saved_errno;
703 return -1;
704 }
705 total += pwrite_ret;
706 }
707
708 return 0;
709 }
710
711 /****************************************************************************
712 A vfs fill sparse call.
713 Writes zeros from the end of file to len, if len is greater than EOF.
714 Used only by strict_sync.
715 Returns 0 on success, -1 on failure.
716 ****************************************************************************/
717
718 int vfs_fill_sparse(files_struct *fsp, off_t len)
719 {
720 int ret;
721 NTSTATUS status;
722 off_t offset;
723 size_t num_to_write;
724 bool ok;
725
726 ok = vfs_valid_pwrite_range(len, 0);
727 if (!ok) {
728 errno = EINVAL;
729 return -1;
730 }
731
732 status = vfs_stat_fsp(fsp);
733 if (!NT_STATUS_IS_OK(status)) {
734 return -1;
735 }
736
737 if (len <= fsp->fsp_name->st.st_ex_size) {
738 return 0;
739 }
740
741 #ifdef S_ISFIFO
742 if (S_ISFIFO(fsp->fsp_name->st.st_ex_mode)) {
743 return 0;
744 }
745 #endif
746
747 DEBUG(10,("vfs_fill_sparse: write zeros in file %s from len %.0f to "
748 "len %.0f (%.0f bytes)\n", fsp_str_dbg(fsp),
749 (double)fsp->fsp_name->st.st_ex_size, (double)len,
750 (double)(len - fsp->fsp_name->st.st_ex_size)));
751
752 contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_FILL_SPARSE);
753
754 offset = fsp->fsp_name->st.st_ex_size;
755 num_to_write = len - fsp->fsp_name->st.st_ex_size;
756
757 /* Only do this on non-stream file handles. */
758 if (!fsp_is_alternate_stream(fsp)) {
759 /* for allocation try fallocate first. This can fail on some
760 * platforms e.g. when the filesystem doesn't support it and no
761 * emulation is being done by the libc (like on AIX with JFS1). In that
762 * case we do our own emulation. fallocate implementations can
763 * return ENOTSUP or EINVAL in cases like that. */
764 ret = SMB_VFS_FALLOCATE(fsp, 0, offset, num_to_write);
765 if (ret == -1 && errno == ENOSPC) {
766 goto out;
767 }
768 if (ret == 0) {
769 goto out;
770 }
771 DEBUG(10,("vfs_fill_sparse: SMB_VFS_FALLOCATE failed with "
772 "error %d. Falling back to slow manual allocation\n", ret));
773 }
774
775 ret = vfs_slow_fallocate(fsp, offset, num_to_write);
776
777 out:
778
779 contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_FILL_SPARSE);
780 return ret;
781 }
782
783 /*******************************************************************************
784 Set a fd into blocking/nonblocking mode through VFS
785 *******************************************************************************/
786
787 int vfs_set_blocking(files_struct *fsp, bool set)
788 {
789 int val;
790 #ifdef O_NONBLOCK
791 #define FLAG_TO_SET O_NONBLOCK
792 #else
793 #ifdef SYSV
794 #define FLAG_TO_SET O_NDELAY
795 #else /* BSD */
796 #define FLAG_TO_SET FNDELAY
797 #endif
798 #endif
799
800 if (fsp->fsp_flags.is_pathref) {
801 return 0;
802 }
803
804 val = SMB_VFS_FCNTL(fsp, F_GETFL, 0);
805 if (val == -1) {
806 return -1;
807 }
808
809 if (set) {
810 val &= ~FLAG_TO_SET;
811 } else {
812 val |= FLAG_TO_SET;
813 }
814
815 return SMB_VFS_FCNTL(fsp, F_SETFL, val);
816 #undef FLAG_TO_SET
817 }
818
819 /****************************************************************************
820 Transfer some data (n bytes) between two file_struct's.
821 ****************************************************************************/
822
823 static ssize_t vfs_pread_fn(void *file, void *buf, size_t len, off_t offset)
824 {
825 struct files_struct *fsp = (struct files_struct *)file;
826
827 return SMB_VFS_PREAD(fsp, buf, len, offset);
828 }
829
830 static ssize_t vfs_pwrite_fn(void *file, const void *buf, size_t len, off_t offset)
831 {
832 struct files_struct *fsp = (struct files_struct *)file;
833
834 return SMB_VFS_PWRITE(fsp, buf, len, offset);
835 }
836
837 off_t vfs_transfer_file(files_struct *in, files_struct *out, off_t n)
838 {
839 return transfer_file_internal((void *)in, (void *)out, n,
840 vfs_pread_fn, vfs_pwrite_fn);
841 }
842
843 /*******************************************************************
844 A vfs_readdir wrapper which just returns the file name.
845 ********************************************************************/
846
847 const char *vfs_readdirname(connection_struct *conn,
848 struct files_struct *dirfsp,
849 void *p,
850 char **talloced)
851 {
852 struct dirent *ptr= NULL;
853 const char *dname;
854 char *translated;
855 NTSTATUS status;
856
857 if (!p)
858 return(NULL);
859
860 ptr = SMB_VFS_READDIR(conn, dirfsp, (DIR *)p);
861 if (!ptr)
862 return(NULL);
863
864 dname = ptr->d_name;
865
866 status = SMB_VFS_TRANSLATE_NAME(conn, dname, vfs_translate_to_windows,
867 talloc_tos(), &translated);
868 if (NT_STATUS_EQUAL(status, NT_STATUS_NONE_MAPPED)) {
869 *talloced = NULL;
870 return dname;
871 }
872 *talloced = translated;
873 if (!NT_STATUS_IS_OK(status)) {
874 return NULL;
875 }
876 return translated;
877 }
878
879 /*******************************************************************
880 A wrapper for vfs_chdir().
881 ********************************************************************/
882
883 int vfs_ChDir(connection_struct *conn, const struct smb_filename *smb_fname)
884 {
885 int ret;
886 struct smb_filename *cwd = NULL;
887
888 if (!LastDir) {
889 LastDir = SMB_STRDUP("");
890 }
891
892 if (ISDOT(smb_fname->base_name)) {
893 /*
894 * passing a '.' is a noop,
895 * and we only expect this after
896 * everything is initialized.
897 *
898 * So the first vfs_ChDir() on a given
899 * connection_struct must not be '.'.
900 *
901 * Note: conn_new() sets
902 * conn->cwd_fsp->fh->fd = -1
903 * and vfs_ChDir() leaves with
904 * conn->cwd_fsp->fh->fd = AT_FDCWD
905 * on success!
906 */
907 if (fsp_get_pathref_fd(conn->cwd_fsp) != AT_FDCWD) {
908 /*
909 * This should never happen and
910 * we might change this to
911 * SMB_ASSERT() in future.
912 */
913 DBG_ERR("Called with '.' as first operation!\n");
914 log_stack_trace();
915 errno = EINVAL;
916 return -1;
917 }
918 return 0;
919 }
920
921 if (smb_fname->base_name[0] == '/' &&
922 strcsequal(LastDir,smb_fname->base_name))
923 {
924 /*
925 * conn->cwd_fsp->fsp_name and the kernel
926 * are already correct, but conn->cwd_fsp->fh->fd
927 * might still be -1 as initialized in conn_new().
928 *
929 * This can happen when a client made a 2nd
930 * tree connect to a share with the same underlying
931 * path (may or may not the same share).
932 */
933 fsp_set_fd(conn->cwd_fsp, AT_FDCWD);
934 return 0;
935 }
936
937 DEBUG(4,("vfs_ChDir to %s\n", smb_fname->base_name));
938
939 ret = SMB_VFS_CHDIR(conn, smb_fname);
940 if (ret != 0) {
941 return -1;
942 }
943
944 /*
945 * Always replace conn->cwd_fsp. We
946 * don't know if it's been modified by
947 * VFS modules in the stack.
948 */
949 fsp_set_fd(conn->cwd_fsp, AT_FDCWD);
950
951 /* conn cache. */
952 cwd = vfs_GetWd(conn, conn);
953 if (cwd == NULL) {
954 /*
955 * vfs_GetWd() failed.
956 * We must be able to read cwd.
957 * Return to original directory
958 * and return -1.
959 */
960 int saved_errno = errno;
961
962 if (conn->cwd_fsp->fsp_name == NULL) {
963 /*
964 * Failed on the very first chdir()+getwd()
965 * for this connection. We can't
966 * continue.
967 */
968 smb_panic("conn->cwd getwd failed\n");
969 /* NOTREACHED */
970 return -1;
971 }
972
973 /* Return to the previous $cwd. */
974 ret = SMB_VFS_CHDIR(conn, conn->cwd_fsp->fsp_name);
975 if (ret != 0) {
976 smb_panic("conn->cwd getwd failed\n");
977 /* NOTREACHED */
978 return -1;
979 }
980 errno = saved_errno;
981 /* And fail the chdir(). */
982 return -1;
983 }
984
985 /* vfs_GetWd() succeeded. */
986 /* Replace global cache. */
987 SAFE_FREE(LastDir);
988 LastDir = SMB_STRDUP(smb_fname->base_name);
989
990 /*
991 * (Indirect) Callers of vfs_ChDir() may still hold references to the
992 * old conn->cwd_fsp->fsp_name. Move it to talloc_tos(), that way
993 * callers can use it for the lifetime of the SMB request.
994 */
995 talloc_move(talloc_tos(), &conn->cwd_fsp->fsp_name);
996
997 conn->cwd_fsp->fsp_name = talloc_move(conn->cwd_fsp, &cwd);
998
999 DBG_INFO("vfs_ChDir got %s\n", fsp_str_dbg(conn->cwd_fsp));
1000
1001 return ret;
1002 }
1003
1004 /*******************************************************************
1005 Return the absolute current directory path - given a UNIX pathname.
1006 Note that this path is returned in DOS format, not UNIX
1007 format. Note this can be called with conn == NULL.
1008 ********************************************************************/
1009
1010 struct smb_filename *vfs_GetWd(TALLOC_CTX *ctx, connection_struct *conn)
1011 {
1012 struct smb_filename *current_dir_fname = NULL;
1013 struct file_id key;
1014 struct smb_filename *smb_fname_dot = NULL;
1015 struct smb_filename *smb_fname_full = NULL;
1016 struct smb_filename *result = NULL;
1017
1018 if (!lp_getwd_cache()) {
1019 goto nocache;
1020 }
1021
1022 smb_fname_dot = synthetic_smb_fname(ctx,
1023 ".",
1024 NULL,
1025 NULL,
1026 0,
1027 0);
1028 if (smb_fname_dot == NULL) {
1029 errno = ENOMEM;
1030 goto out;
1031 }
1032
1033 if (SMB_VFS_STAT(conn, smb_fname_dot) == -1) {
1034 /*
1035 * Known to fail for root: the directory may be NFS-mounted
1036 * and exported with root_squash (so has no root access).
1037 */
1038 DEBUG(1,("vfs_GetWd: couldn't stat \".\" error %s "
1039 "(NFS problem ?)\n", strerror(errno) ));
1040 goto nocache;
1041 }
1042
1043 key = vfs_file_id_from_sbuf(conn, &smb_fname_dot->st);
1044
1045 smb_fname_full = (struct smb_filename *)memcache_lookup_talloc(
1046 smbd_memcache(),
1047 GETWD_CACHE,
1048 data_blob_const(&key, sizeof(key)));
1049
1050 if (smb_fname_full == NULL) {
1051 goto nocache;
1052 }
1053
1054 if ((SMB_VFS_STAT(conn, smb_fname_full) == 0) &&
1055 (smb_fname_dot->st.st_ex_dev == smb_fname_full->st.st_ex_dev) &&
1056 (smb_fname_dot->st.st_ex_ino == smb_fname_full->st.st_ex_ino) &&
1057 (S_ISDIR(smb_fname_dot->st.st_ex_mode))) {
1058 /*
1059 * Ok, we're done
1060 * Note: smb_fname_full is owned by smbd_memcache()
1061 * so we must make a copy to return.
1062 */
1063 result = cp_smb_filename(ctx, smb_fname_full);
1064 if (result == NULL) {
1065 errno = ENOMEM;
1066 }
1067 goto out;
1068 }
1069
1070 nocache:
1071
1072 /*
1073 * We don't have the information to hand so rely on traditional
1074 * methods. The very slow getcwd, which spawns a process on some
1075 * systems, or the not quite so bad getwd.
1076 */
1077
1078 current_dir_fname = SMB_VFS_GETWD(conn, ctx);
1079 if (current_dir_fname == NULL) {
1080 DEBUG(0, ("vfs_GetWd: SMB_VFS_GETWD call failed: %s\n",
1081 strerror(errno)));
1082 goto out;
1083 }
1084
1085 if (lp_getwd_cache() && VALID_STAT(smb_fname_dot->st)) {
1086 key = vfs_file_id_from_sbuf(conn, &smb_fname_dot->st);
1087
1088 /*
1089 * smbd_memcache() will own current_dir_fname after the
1090 * memcache_add_talloc call, so we must make
1091 * a copy on ctx to return.
1092 */
1093 result = cp_smb_filename(ctx, current_dir_fname);
1094 if (result == NULL) {
1095 errno = ENOMEM;
1096 }
1097
1098 /*
1099 * Ensure the memory going into the cache
1100 * doesn't have a destructor so it can be
1101 * cleanly freed.
1102 */
1103 talloc_set_destructor(current_dir_fname, NULL);
1104
1105 memcache_add_talloc(smbd_memcache(),
1106 GETWD_CACHE,
1107 data_blob_const(&key, sizeof(key)),
1108 &current_dir_fname);
1109 /* current_dir_fname is now == NULL here. */
1110 } else {
1111 /* current_dir_fname is already allocated on ctx. */
1112 result = current_dir_fname;
1113 }
1114
1115 out:
1116 TALLOC_FREE(smb_fname_dot);
1117 /*
1118 * Don't free current_dir_fname here. It's either been moved
1119 * to the memcache or is being returned in result.
1120 */
1121 return result;
1122 }
1123
1124 /*
1125 * Ensure LSTAT is called for POSIX paths.
1126 */
1127 int vfs_stat(struct connection_struct *conn,
1128 struct smb_filename *smb_fname)
1129 {
1130 if (smb_fname->flags & SMB_FILENAME_POSIX_PATH) {
1131 return SMB_VFS_LSTAT(conn, smb_fname);
1132 }
1133 return SMB_VFS_STAT(conn, smb_fname);
1134 }
1135
1136 /**
1137 * XXX: This is temporary and there should be no callers of this once
1138 * smb_filename is plumbed through all path based operations.
1139 *
1140 * Called when we know stream name parsing has already been done.
1141 */
1142 int vfs_stat_smb_basename(struct connection_struct *conn,
1143 const struct smb_filename *smb_fname_in,
1144 SMB_STRUCT_STAT *psbuf)
1145 {
1146 struct smb_filename smb_fname = {
1147 .base_name = discard_const_p(char, smb_fname_in->base_name),
1148 .flags = smb_fname_in->flags,
1149 .twrp = smb_fname_in->twrp,
1150 };
1151 int ret;
1152
1153 ret = vfs_stat(conn, &smb_fname);
1154 if (ret != -1) {
1155 *psbuf = smb_fname.st;
1156 }
1157 return ret;
1158 }
1159
1160 /**
1161 * Ensure LSTAT is called for POSIX paths.
1162 */
1163
1164 NTSTATUS vfs_stat_fsp(files_struct *fsp)
1165 {
1166 int ret;
1167 struct stat_ex saved_stat = fsp->fsp_name->st;
1168
1169 if (fsp->fake_file_handle != NULL) {
1170 return NT_STATUS_OK;
1171 }
1172
1173 if (fsp_get_pathref_fd(fsp) == -1) {
1174 if (fsp->posix_flags & FSP_POSIX_FLAGS_OPEN) {
1175 ret = SMB_VFS_LSTAT(fsp->conn, fsp->fsp_name);
1176 } else {
1177 ret = SMB_VFS_STAT(fsp->conn, fsp->fsp_name);
1178 }
1179 } else {
1180 ret = SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st);
1181 }
1182 if (ret == -1) {
1183 return map_nt_error_from_unix(errno);
1184 }
1185 update_stat_ex_from_saved_stat(&fsp->fsp_name->st, &saved_stat);
1186 fsp->fsp_flags.is_directory = S_ISDIR(fsp->fsp_name->st.st_ex_mode);
1187 return NT_STATUS_OK;
1188 }
1189
1190 void init_smb_file_time(struct smb_file_time *ft)
1191 {
1192 *ft = (struct smb_file_time) {
1193 .atime = make_omit_timespec(),
1194 .ctime = make_omit_timespec(),
1195 .mtime = make_omit_timespec(),
1196 .create_time = make_omit_timespec()
1197 };
1198 }
1199
1200 /**
1201 * Initialize num_streams and streams, then call VFS op streaminfo
1202 */
1203
1204 NTSTATUS vfs_fstreaminfo(struct files_struct *fsp,
1205 TALLOC_CTX *mem_ctx,
1206 unsigned int *num_streams,
1207 struct stream_struct **streams)
1208 {
1209 *num_streams = 0;
1210 *streams = NULL;
1211
1212 if (fsp == NULL) {
1213 /*
1214 * Callers may pass fsp == NULL when passing smb_fname->fsp of a
1215 * symlink. This is ok, handle it here, by just return no
1216 * streams on a symlink.
1217 */
1218 return NT_STATUS_OK;
1219 }
1220
1221 if (fsp_get_pathref_fd(fsp) == -1) {
1222 /*
1223 * No streams on non-real files/directories.
1224 */
1225 return NT_STATUS_OK;
1226 }
1227
1228 return SMB_VFS_FSTREAMINFO(fsp,
1229 mem_ctx,
1230 num_streams,
1231 streams);
1232 }
1233
1234 int vfs_fake_fd(void)
1235 {
1236 int pipe_fds[2];
1237 int ret;
1238
1239 /*
1240 * Return a valid fd, but ensure any attempt to use
1241 * it returns an error (EPIPE).
1242 */
1243 ret = pipe(pipe_fds);
1244 if (ret != 0) {
1245 return -1;
1246 }
1247
1248 close(pipe_fds[1]);
1249 return pipe_fds[0];
1250 }
1251
1252 /*
1253 * This is just a helper to make
1254 * users of vfs_fake_fd() more symmetric
1255 */
1256 int vfs_fake_fd_close(int fd)
1257 {
1258 return close(fd);
1259 }
1260
1261 /*
1262 generate a file_id from a stat structure
1263 */
1264 struct file_id vfs_file_id_from_sbuf(connection_struct *conn, const SMB_STRUCT_STAT *sbuf)
1265 {
1266 return SMB_VFS_FILE_ID_CREATE(conn, sbuf);
1267 }
1268
1269 NTSTATUS vfs_at_fspcwd(TALLOC_CTX *mem_ctx,
1270 struct connection_struct *conn,
1271 struct files_struct **_fsp)
1272 {
1273 struct files_struct *fsp = NULL;
1274
1275 fsp = talloc_zero(mem_ctx, struct files_struct);
1276 if (fsp == NULL) {
1277 return NT_STATUS_NO_MEMORY;
1278 }
1279
1280 fsp->fsp_name = synthetic_smb_fname(fsp, ".", NULL, NULL, 0, 0);
1281 if (fsp->fsp_name == NULL) {
1282 TALLOC_FREE(fsp);
1283 return NT_STATUS_NO_MEMORY;
1284 }
1285
1286 fsp->fh = fd_handle_create(fsp);
1287 if (fsp->fh == NULL) {
1288 TALLOC_FREE(fsp);
1289 return NT_STATUS_NO_MEMORY;
1290 }
1291
1292 fsp_set_fd(fsp, AT_FDCWD);
1293 fsp->fnum = FNUM_FIELD_INVALID;
1294 fsp->conn = conn;
1295
1296 *_fsp = fsp;
1297 return NT_STATUS_OK;
1298 }
1299
1300 NTSTATUS vfs_fget_dos_attributes(struct files_struct *fsp,
1301 uint32_t *dosmode)
1302 {
1303 NTSTATUS status;
1304
1305 /*
1306 * First make sure to pass the base_fsp to the VFS
1307 */
1308 status = SMB_VFS_FGET_DOS_ATTRIBUTES(
1309 fsp->conn, metadata_fsp(fsp), dosmode);
1310 if (!NT_STATUS_IS_OK(status)) {
1311 return status;
1312 }
1313
1314 /*
1315 * If this isn't a stream fsp we're done, ...
1316 */
1317 if (!fsp_is_alternate_stream(fsp)) {
1318 return NT_STATUS_OK;
1319 }
1320
1321 /*
1322 * ...otherwise the VFS might have updated the btime, propagate the
1323 * btime from the base_fsp to the stream fsp.
1324 */
1325
1326 if (fsp->base_fsp->fsp_name->st.st_ex_iflags & ST_EX_IFLAG_CALCULATED_BTIME) {
1327 /*
1328 * Not a value from backend storage, ignore it
1329 */
1330 return NT_STATUS_OK;
1331 }
1332
1333 update_stat_ex_create_time(&fsp->fsp_name->st,
1334 fsp->base_fsp->fsp_name->st.st_ex_btime);
1335
1336 return NT_STATUS_OK;
1337 }
1338
1339 static struct smb_vfs_deny_state *smb_vfs_deny_global;
1340
1341 void smb_vfs_assert_allowed(void)
1342 {
1343 if (unlikely(smb_vfs_deny_global != NULL)) {
1344 DBG_ERR("Called with VFS denied by %s\n",
1345 smb_vfs_deny_global->location);
1346 smb_panic("Called with VFS denied!");
1347 }
1348 }
1349
1350 void _smb_vfs_deny_push(struct smb_vfs_deny_state *state, const char *location)
1351 {
1352 SMB_ASSERT(smb_vfs_deny_global != state);
1353
1354 *state = (struct smb_vfs_deny_state) {
1355 .parent = smb_vfs_deny_global,
1356 .location = location,
1357 };
1358
1359 smb_vfs_deny_global = state;
1360 }
1361
1362 void _smb_vfs_deny_pop(struct smb_vfs_deny_state *state, const char *location)
1363 {
1364 SMB_ASSERT(smb_vfs_deny_global == state);
1365
1366 smb_vfs_deny_global = state->parent;
1367
1368 *state = (struct smb_vfs_deny_state) { .parent = NULL, };
1369 }
1370
1371 #define VFS_FIND(__fn__) do { \
1372 if (unlikely(smb_vfs_deny_global != NULL)) { \
1373 DBG_ERR("Called with VFS denied by %s\n", \
1374 smb_vfs_deny_global->location); \
1375 smb_panic("Called with VFS denied!"); \
1376 } \
1377 while (handle->fns->__fn__##_fn==NULL) { \
1378 handle = handle->next; \
1379 } \
1380 } while(0)
1381
1382 int smb_vfs_call_connect(struct vfs_handle_struct *handle,
1383 const char *service, const char *user)
1384 {
1385 VFS_FIND(connect);
1386 return handle->fns->connect_fn(handle, service, user);
1387 }
1388
1389 void smb_vfs_call_disconnect(struct vfs_handle_struct *handle)
1390 {
1391 VFS_FIND(disconnect);
1392 handle->fns->disconnect_fn(handle);
1393 }
1394
1395 uint64_t smb_vfs_call_disk_free(struct vfs_handle_struct *handle,
1396 const struct smb_filename *smb_fname,
1397 uint64_t *bsize,
1398 uint64_t *dfree,
1399 uint64_t *dsize)
1400 {
1401 VFS_FIND(disk_free);
1402 return handle->fns->disk_free_fn(handle, smb_fname,
1403 bsize, dfree, dsize);
1404 }
1405
1406 int smb_vfs_call_get_quota(struct vfs_handle_struct *handle,
1407 const struct smb_filename *smb_fname,
1408 enum SMB_QUOTA_TYPE qtype,
1409 unid_t id,
1410 SMB_DISK_QUOTA *qt)
1411 {
1412 VFS_FIND(get_quota);
1413 return handle->fns->get_quota_fn(handle, smb_fname, qtype, id, qt);
1414 }
1415
1416 int smb_vfs_call_set_quota(struct vfs_handle_struct *handle,
1417 enum SMB_QUOTA_TYPE qtype, unid_t id,
1418 SMB_DISK_QUOTA *qt)
1419 {
1420 VFS_FIND(set_quota);
1421 return handle->fns->set_quota_fn(handle, qtype, id, qt);
1422 }
1423
1424 int smb_vfs_call_get_shadow_copy_data(struct vfs_handle_struct *handle,
1425 struct files_struct *fsp,
1426 struct shadow_copy_data *shadow_copy_data,
1427 bool labels)
1428 {
1429 VFS_FIND(get_shadow_copy_data);
1430 return handle->fns->get_shadow_copy_data_fn(handle, fsp,
1431 shadow_copy_data,
1432 labels);
1433 }
1434 int smb_vfs_call_statvfs(struct vfs_handle_struct *handle,
1435 const struct smb_filename *smb_fname,
1436 struct vfs_statvfs_struct *statbuf)
1437 {
1438 VFS_FIND(statvfs);
1439 return handle->fns->statvfs_fn(handle, smb_fname, statbuf);
1440 }
1441
1442 uint32_t smb_vfs_call_fs_capabilities(struct vfs_handle_struct *handle,
1443 enum timestamp_set_resolution *p_ts_res)
1444 {
1445 VFS_FIND(fs_capabilities);
1446 return handle->fns->fs_capabilities_fn(handle, p_ts_res);
1447 }
1448
1449 NTSTATUS smb_vfs_call_get_dfs_referrals(struct vfs_handle_struct *handle,
1450 struct dfs_GetDFSReferral *r)
1451 {
1452 VFS_FIND(get_dfs_referrals);
1453 return handle->fns->get_dfs_referrals_fn(handle, r);
1454 }
1455
1456 NTSTATUS smb_vfs_call_create_dfs_pathat(struct vfs_handle_struct *handle,
1457 struct files_struct *dirfsp,
1458 const struct smb_filename *smb_fname,
1459 const struct referral *reflist,
1460 size_t referral_count)
1461 {
1462 VFS_FIND(create_dfs_pathat);
1463 return handle->fns->create_dfs_pathat_fn(handle,
1464 dirfsp,
1465 smb_fname,
1466 reflist,
1467 referral_count);
1468 }
1469
1470 NTSTATUS smb_vfs_call_read_dfs_pathat(struct vfs_handle_struct *handle,
1471 TALLOC_CTX *mem_ctx,
1472 struct files_struct *dirfsp,
1473 struct smb_filename *smb_fname,
1474 struct referral **ppreflist,
1475 size_t *preferral_count)
1476 {
1477 VFS_FIND(read_dfs_pathat);
1478 return handle->fns->read_dfs_pathat_fn(handle,
1479 mem_ctx,
1480 dirfsp,
1481 smb_fname,
1482 ppreflist,
1483 preferral_count);
1484 }
1485
1486 DIR *smb_vfs_call_fdopendir(struct vfs_handle_struct *handle,
1487 struct files_struct *fsp,
1488 const char *mask,
1489 uint32_t attributes)
1490 {
1491 VFS_FIND(fdopendir);
1492 return handle->fns->fdopendir_fn(handle, fsp, mask, attributes);
1493 }
1494
1495 struct dirent *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
1496 struct files_struct *dirfsp,
1497 DIR *dirp)
1498 {
1499 VFS_FIND(readdir);
1500 return handle->fns->readdir_fn(handle, dirfsp, dirp);
1501 }
1502
1503 void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
1504 DIR *dirp)
1505 {
1506 VFS_FIND(rewind_dir);
1507 handle->fns->rewind_dir_fn(handle, dirp);
1508 }
1509
1510 int smb_vfs_call_mkdirat(struct vfs_handle_struct *handle,
1511 struct files_struct *dirfsp,
1512 const struct smb_filename *smb_fname,
1513 mode_t mode)
1514 {
1515 VFS_FIND(mkdirat);
1516 return handle->fns->mkdirat_fn(handle,
1517 dirfsp,
1518 smb_fname,
1519 mode);
1520 }
1521
1522 int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
1523 DIR *dir)
1524 {
1525 VFS_FIND(closedir);
1526 return handle->fns->closedir_fn(handle, dir);
1527 }
1528
1529 int smb_vfs_call_openat(struct vfs_handle_struct *handle,
1530 const struct files_struct *dirfsp,
1531 const struct smb_filename *smb_fname,
1532 struct files_struct *fsp,
1533 const struct vfs_open_how *how)
1534 {
1535 VFS_FIND(openat);
1536 return handle->fns->openat_fn(handle,
1537 dirfsp,
1538 smb_fname,
1539 fsp,
1540 how);
1541 }
1542
1543 NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
1544 struct smb_request *req,
1545 struct files_struct *dirfsp,
1546 struct smb_filename *smb_fname,
1547 uint32_t access_mask,
1548 uint32_t share_access,
1549 uint32_t create_disposition,
1550 uint32_t create_options,
1551 uint32_t file_attributes,
1552 uint32_t oplock_request,
1553 const struct smb2_lease *lease,
1554 uint64_t allocation_size,
1555 uint32_t private_flags,
1556 struct security_descriptor *sd,
1557 struct ea_list *ea_list,
1558 files_struct **result,
1559 int *pinfo,
1560 const struct smb2_create_blobs *in_context_blobs,
1561 struct smb2_create_blobs *out_context_blobs)
1562 {
1563 VFS_FIND(create_file);
1564 return handle->fns->create_file_fn(
1565 handle, req, dirfsp, smb_fname,
1566 access_mask, share_access, create_disposition, create_options,
1567 file_attributes, oplock_request, lease, allocation_size,
1568 private_flags, sd, ea_list,
1569 result, pinfo, in_context_blobs, out_context_blobs);
1570 }
1571
1572 int smb_vfs_call_close(struct vfs_handle_struct *handle,
1573 struct files_struct *fsp)
1574 {
1575 VFS_FIND(close);
1576 return handle->fns->close_fn(handle, fsp);
1577 }
1578
1579 ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
1580 struct files_struct *fsp, void *data, size_t n,
1581 off_t offset)
1582 {
1583 VFS_FIND(pread);
1584 return handle->fns->pread_fn(handle, fsp, data, n, offset);
1585 }
1586
1587 struct smb_vfs_call_pread_state {
1588 ssize_t (*recv_fn)(struct tevent_req *req, struct vfs_aio_state *vfs_aio_state);
1589 ssize_t retval;
1590 struct vfs_aio_state vfs_aio_state;
1591 };
1592
1593 static void smb_vfs_call_pread_done(struct tevent_req *subreq);
1594
1595 struct tevent_req *smb_vfs_call_pread_send(struct vfs_handle_struct *handle,
1596 TALLOC_CTX *mem_ctx,
1597 struct tevent_context *ev,
1598 struct files_struct *fsp,
1599 void *data,
1600 size_t n, off_t offset)
1601 {
1602 struct tevent_req *req, *subreq;
1603 struct smb_vfs_call_pread_state *state;
1604
1605 req = tevent_req_create(mem_ctx, &state,
1606 struct smb_vfs_call_pread_state);
1607 if (req == NULL) {
1608 return NULL;
1609 }
1610 VFS_FIND(pread_send);
1611 state->recv_fn = handle->fns->pread_recv_fn;
1612
1613 subreq = handle->fns->pread_send_fn(handle, state, ev, fsp, data, n,
1614 offset);
1615 if (tevent_req_nomem(subreq, req)) {
1616 return tevent_req_post(req, ev);
1617 }
1618 tevent_req_set_callback(subreq, smb_vfs_call_pread_done, req);
1619 return req;
1620 }
1621
1622 static void smb_vfs_call_pread_done(struct tevent_req *subreq)
1623 {
1624 struct tevent_req *req = tevent_req_callback_data(
1625 subreq, struct tevent_req);
1626 struct smb_vfs_call_pread_state *state = tevent_req_data(
1627 req, struct smb_vfs_call_pread_state);
1628
1629 state->retval = state->recv_fn(subreq, &state->vfs_aio_state);
1630 TALLOC_FREE(subreq);
1631 if (state->retval == -1) {
1632 tevent_req_error(req, state->vfs_aio_state.error);
1633 return;
1634 }
1635 tevent_req_done(req);
1636 }
1637
1638 ssize_t SMB_VFS_PREAD_RECV(struct tevent_req *req,
1639 struct vfs_aio_state *vfs_aio_state)
1640 {
1641 struct smb_vfs_call_pread_state *state = tevent_req_data(
1642 req, struct smb_vfs_call_pread_state);
1643 ssize_t retval;
1644
1645 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1646 tevent_req_received(req);
1647 return -1;
1648 }
1649 *vfs_aio_state = state->vfs_aio_state;
1650 retval = state->retval;
1651 tevent_req_received(req);
1652 return retval;
1653 }
1654
1655 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
1656 struct files_struct *fsp, const void *data,
1657 size_t n, off_t offset)
1658 {
1659 VFS_FIND(pwrite);
1660 return handle->fns->pwrite_fn(handle, fsp, data, n, offset);
1661 }
1662
1663 struct smb_vfs_call_pwrite_state {
1664 ssize_t (*recv_fn)(struct tevent_req *req, struct vfs_aio_state *vfs_aio_state);
1665 ssize_t retval;
1666 struct vfs_aio_state vfs_aio_state;
1667 };
1668
1669 static void smb_vfs_call_pwrite_done(struct tevent_req *subreq);
1670
1671 struct tevent_req *smb_vfs_call_pwrite_send(struct vfs_handle_struct *handle,
1672 TALLOC_CTX *mem_ctx,
1673 struct tevent_context *ev,
1674 struct files_struct *fsp,
1675 const void *data,
1676 size_t n, off_t offset)
1677 {
1678 struct tevent_req *req, *subreq;
1679 struct smb_vfs_call_pwrite_state *state;
1680
1681 req = tevent_req_create(mem_ctx, &state,
1682 struct smb_vfs_call_pwrite_state);
1683 if (req == NULL) {
1684 return NULL;
1685 }
1686 VFS_FIND(pwrite_send);
1687 state->recv_fn = handle->fns->pwrite_recv_fn;
1688
1689 subreq = handle->fns->pwrite_send_fn(handle, state, ev, fsp, data, n,
1690 offset);
1691 if (tevent_req_nomem(subreq, req)) {
1692 return tevent_req_post(req, ev);
1693 }
1694 tevent_req_set_callback(subreq, smb_vfs_call_pwrite_done, req);
1695 return req;
1696 }
1697
1698 static void smb_vfs_call_pwrite_done(struct tevent_req *subreq)
1699 {
1700 struct tevent_req *req = tevent_req_callback_data(
1701 subreq, struct tevent_req);
1702 struct smb_vfs_call_pwrite_state *state = tevent_req_data(
1703 req, struct smb_vfs_call_pwrite_state);
1704
1705 state->retval = state->recv_fn(subreq, &state->vfs_aio_state);
1706 TALLOC_FREE(subreq);
1707 if (state->retval == -1) {
1708 tevent_req_error(req, state->vfs_aio_state.error);
1709 return;
1710 }
1711 tevent_req_done(req);
1712 }
1713
1714 ssize_t SMB_VFS_PWRITE_RECV(struct tevent_req *req,
1715 struct vfs_aio_state *vfs_aio_state)
1716 {
1717 struct smb_vfs_call_pwrite_state *state = tevent_req_data(
1718 req, struct smb_vfs_call_pwrite_state);
1719 ssize_t retval;
1720
1721 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1722 tevent_req_received(req);
1723 return -1;
1724 }
1725 *vfs_aio_state = state->vfs_aio_state;
1726 retval = state->retval;
1727 tevent_req_received(req);
1728 return retval;
1729 }
1730
1731 off_t smb_vfs_call_lseek(struct vfs_handle_struct *handle,
1732 struct files_struct *fsp, off_t offset,
1733 int whence)
1734 {
1735 VFS_FIND(lseek);
1736 return handle->fns->lseek_fn(handle, fsp, offset, whence);
1737 }
1738
1739 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
1740 files_struct *fromfsp, const DATA_BLOB *header,
1741 off_t offset, size_t count)
1742 {
1743 VFS_FIND(sendfile);
1744 return handle->fns->sendfile_fn(handle, tofd, fromfsp, header, offset,
1745 count);
1746 }
1747
1748 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
1749 files_struct *tofsp, off_t offset,
1750 size_t count)
1751 {
1752 VFS_FIND(recvfile);
1753 return handle->fns->recvfile_fn(handle, fromfd, tofsp, offset, count);
1754 }
1755
1756 int smb_vfs_call_renameat(struct vfs_handle_struct *handle,
1757 files_struct *srcfsp,
1758 const struct smb_filename *smb_fname_src,
1759 files_struct *dstfsp,
1760 const struct smb_filename *smb_fname_dst)
1761 {
1762 VFS_FIND(renameat);
1763 return handle->fns->renameat_fn(handle,
1764 srcfsp,
1765 smb_fname_src,
1766 dstfsp,
1767 smb_fname_dst);
1768 }
1769
1770 struct smb_vfs_call_fsync_state {
1771 int (*recv_fn)(struct tevent_req *req, struct vfs_aio_state *vfs_aio_state);
1772 int retval;
1773 struct vfs_aio_state vfs_aio_state;
1774 };
1775
1776 static void smb_vfs_call_fsync_done(struct tevent_req *subreq);
1777
1778 struct tevent_req *smb_vfs_call_fsync_send(struct vfs_handle_struct *handle,
1779 TALLOC_CTX *mem_ctx,
1780 struct tevent_context *ev,
1781 struct files_struct *fsp)
1782 {
1783 struct tevent_req *req, *subreq;
1784 struct smb_vfs_call_fsync_state *state;
1785
1786 req = tevent_req_create(mem_ctx, &state,
1787 struct smb_vfs_call_fsync_state);
1788 if (req == NULL) {
1789 return NULL;
1790 }
1791 VFS_FIND(fsync_send);
1792 state->recv_fn = handle->fns->fsync_recv_fn;
1793
1794 subreq = handle->fns->fsync_send_fn(handle, state, ev, fsp);
1795 if (tevent_req_nomem(subreq, req)) {
1796 return tevent_req_post(req, ev);
1797 }
1798 tevent_req_set_callback(subreq, smb_vfs_call_fsync_done, req);
1799 return req;
1800 }
1801
1802 static void smb_vfs_call_fsync_done(struct tevent_req *subreq)
1803 {
1804 struct tevent_req *req = tevent_req_callback_data(
1805 subreq, struct tevent_req);
1806 struct smb_vfs_call_fsync_state *state = tevent_req_data(
1807 req, struct smb_vfs_call_fsync_state);
1808
1809 state->retval = state->recv_fn(subreq, &state->vfs_aio_state);
1810 TALLOC_FREE(subreq);
1811 if (state->retval == -1) {
1812 tevent_req_error(req, state->vfs_aio_state.error);
1813 return;
1814 }
1815 tevent_req_done(req);
1816 }
1817
1818 int SMB_VFS_FSYNC_RECV(struct tevent_req *req, struct vfs_aio_state *vfs_aio_state)
1819 {
1820 struct smb_vfs_call_fsync_state *state = tevent_req_data(
1821 req, struct smb_vfs_call_fsync_state);
1822 ssize_t retval;
1823
1824 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1825 tevent_req_received(req);
1826 return -1;
1827 }
1828 *vfs_aio_state = state->vfs_aio_state;
1829 retval = state->retval;
1830 tevent_req_received(req);
1831 return retval;
1832 }
1833
1834 /*
1835 * Synchronous version of fsync, built from backend
1836 * async VFS primitives. Uses a temporary sub-event
1837 * context (NOT NESTED).
1838 */
1839
1840 int smb_vfs_fsync_sync(files_struct *fsp)
1841 {
1842 TALLOC_CTX *frame = talloc_stackframe();
1843 struct tevent_req *req = NULL;
1844 struct vfs_aio_state aio_state = { 0 };
1845 int ret = -1;
1846 bool ok;
1847 struct tevent_context *ev = samba_tevent_context_init(frame);
1848
1849 if (ev == NULL) {
1850 goto out;
1851 }
1852
1853 req = SMB_VFS_FSYNC_SEND(talloc_tos(), ev, fsp);
1854 if (req == NULL) {
1855 goto out;
1856 }
1857
1858 ok = tevent_req_poll(req, ev);
1859 if (!ok) {
1860 goto out;
1861 }
1862
1863 ret = SMB_VFS_FSYNC_RECV(req, &aio_state);
1864
1865 out:
1866
1867 TALLOC_FREE(frame);
1868 if (aio_state.error != 0) {
1869 errno = aio_state.error;
1870 }
1871 return ret;
1872 }
1873
1874 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
1875 struct smb_filename *smb_fname)
1876 {
1877 VFS_FIND(stat);
1878 return handle->fns->stat_fn(handle, smb_fname);
1879 }
1880
1881 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
1882 struct files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1883 {
1884 VFS_FIND(fstat);
1885 return handle->fns->fstat_fn(handle, fsp, sbuf);
1886 }
1887
1888 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
1889 struct smb_filename *smb_filename)
1890 {
1891 VFS_FIND(lstat);
1892 return handle->fns->lstat_fn(handle, smb_filename);
1893 }
1894
1895 int smb_vfs_call_fstatat(
1896 struct vfs_handle_struct *handle,
1897 const struct files_struct *dirfsp,
1898 const struct smb_filename *smb_fname,
1899 SMB_STRUCT_STAT *sbuf,
1900 int flags)
1901 {
1902 VFS_FIND(fstatat);
1903 return handle->fns->fstatat_fn(handle, dirfsp, smb_fname, sbuf, flags);
1904 }
1905
1906 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
1907 struct files_struct *fsp,
1908 const SMB_STRUCT_STAT *sbuf)
1909 {
1910 VFS_FIND(get_alloc_size);
1911 return handle->fns->get_alloc_size_fn(handle, fsp, sbuf);
1912 }
1913
1914 int smb_vfs_call_unlinkat(struct vfs_handle_struct *handle,
1915 struct files_struct *dirfsp,
1916 const struct smb_filename *smb_fname,
1917 int flags)
1918 {
1919 VFS_FIND(unlinkat);
1920 return handle->fns->unlinkat_fn(handle,
1921 dirfsp,
1922 smb_fname,
1923 flags);
1924 }
1925
1926 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
1927 struct files_struct *fsp, mode_t mode)
1928 {
1929 VFS_FIND(fchmod);
1930 return handle->fns->fchmod_fn(handle, fsp, mode);
1931 }
1932
1933 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
1934 struct files_struct *fsp, uid_t uid, gid_t gid)
1935 {
1936 VFS_FIND(fchown);
1937 return handle->fns->fchown_fn(handle, fsp, uid, gid);
1938 }
1939
1940 int smb_vfs_call_lchown(struct vfs_handle_struct *handle,
1941 const struct smb_filename *smb_fname,
1942 uid_t uid,
1943 gid_t gid)
1944 {
1945 VFS_FIND(lchown);
1946 return handle->fns->lchown_fn(handle, smb_fname, uid, gid);
1947 }
1948
1949 int smb_vfs_call_chdir(struct vfs_handle_struct *handle,
1950 const struct smb_filename *smb_fname)
1951 {
1952 VFS_FIND(chdir);
1953 return handle->fns->chdir_fn(handle, smb_fname);
1954 }
1955
1956 struct smb_filename *smb_vfs_call_getwd(struct vfs_handle_struct *handle,
1957 TALLOC_CTX *ctx)
1958 {
1959 VFS_FIND(getwd);
1960 return handle->fns->getwd_fn(handle, ctx);
1961 }
1962
1963 int smb_vfs_call_fntimes(struct vfs_handle_struct *handle,
1964 struct files_struct *fsp,
1965 struct smb_file_time *ft)
1966 {
1967 VFS_FIND(fntimes);
1968 return handle->fns->fntimes_fn(handle, fsp, ft);
1969 }
1970
1971 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
1972 struct files_struct *fsp, off_t offset)
1973 {
1974 VFS_FIND(ftruncate);
1975 return handle->fns->ftruncate_fn(handle, fsp, offset);
1976 }
1977
1978 int smb_vfs_call_fallocate(struct vfs_handle_struct *handle,
1979 struct files_struct *fsp,
1980 uint32_t mode,
1981 off_t offset,
1982 off_t len)
1983 {
1984 VFS_FIND(fallocate);
1985 return handle->fns->fallocate_fn(handle, fsp, mode, offset, len);
1986 }
1987
1988 int smb_vfs_call_filesystem_sharemode(struct vfs_handle_struct *handle,
1989 struct files_struct *fsp,
1990 uint32_t share_mode,
1991 uint32_t access_mask)
1992 {
1993 VFS_FIND(filesystem_sharemode);
1994 return handle->fns->filesystem_sharemode_fn(handle,
1995 fsp,
1996 share_mode,
1997 access_mask);
1998 }
1999
2000 int smb_vfs_call_fcntl(struct vfs_handle_struct *handle,
2001 struct files_struct *fsp, int cmd, ...)
2002 {
2003 int result;
2004 va_list cmd_arg;
2005
2006 VFS_FIND(fcntl);
2007
2008 va_start(cmd_arg, cmd);
2009 result = handle->fns->fcntl_fn(handle, fsp, cmd, cmd_arg);
2010 va_end(cmd_arg);
2011
2012 return result;
2013 }
2014
2015 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
2016 struct files_struct *fsp, int leasetype)
2017 {
2018 VFS_FIND(linux_setlease);
2019 return handle->fns->linux_setlease_fn(handle, fsp, leasetype);
2020 }
2021
2022 int smb_vfs_call_symlinkat(struct vfs_handle_struct *handle,
2023 const struct smb_filename *link_target,
2024 struct files_struct *dirfsp,
2025 const struct smb_filename *new_smb_fname)
2026 {
2027 VFS_FIND(symlinkat);
2028 return handle->fns->symlinkat_fn(handle,
2029 link_target,
2030 dirfsp,
2031 new_smb_fname);
2032 }
2033
2034 int smb_vfs_call_readlinkat(struct vfs_handle_struct *handle,
2035 const struct files_struct *dirfsp,
2036 const struct smb_filename *smb_fname,
2037 char *buf,
2038 size_t bufsiz)
2039 {
2040 VFS_FIND(readlinkat);
2041 return handle->fns->readlinkat_fn(handle,
2042 dirfsp,
2043 smb_fname,
2044 buf,
2045 bufsiz);
2046 }
2047
2048 int smb_vfs_call_linkat(struct vfs_handle_struct *handle,
2049 struct files_struct *srcfsp,
2050 const struct smb_filename *old_smb_fname,
2051 struct files_struct *dstfsp,
2052 const struct smb_filename *new_smb_fname,
2053 int flags)
2054 {
2055 VFS_FIND(linkat);
2056 return handle->fns->linkat_fn(handle,
2057 srcfsp,
2058 old_smb_fname,
2059 dstfsp,
2060 new_smb_fname,
2061 flags);
2062 }
2063
2064 int smb_vfs_call_mknodat(struct vfs_handle_struct *handle,
2065 struct files_struct *dirfsp,
2066 const struct smb_filename *smb_fname,
2067 mode_t mode,
2068 SMB_DEV_T dev)
2069 {
2070 VFS_FIND(mknodat);
2071 return handle->fns->mknodat_fn(handle,
2072 dirfsp,
2073 smb_fname,
2074 mode,
2075 dev);
2076 }
2077
2078 struct smb_filename *smb_vfs_call_realpath(struct vfs_handle_struct *handle,
2079 TALLOC_CTX *ctx,
2080 const struct smb_filename *smb_fname)
2081 {
2082 VFS_FIND(realpath);
2083 return handle->fns->realpath_fn(handle, ctx, smb_fname);
2084 }
2085
2086 int smb_vfs_call_fchflags(struct vfs_handle_struct *handle,
2087 struct files_struct *fsp,
2088 unsigned int flags)
2089 {
2090 VFS_FIND(fchflags);
2091 return handle->fns->fchflags_fn(handle, fsp, flags);
2092 }
2093
2094 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
2095 const SMB_STRUCT_STAT *sbuf)
2096 {
2097 VFS_FIND(file_id_create);
2098 return handle->fns->file_id_create_fn(handle, sbuf);
2099 }
2100
2101 uint64_t smb_vfs_call_fs_file_id(struct vfs_handle_struct *handle,
2102 const SMB_STRUCT_STAT *sbuf)
2103 {
2104 VFS_FIND(fs_file_id);
2105 return handle->fns->fs_file_id_fn(handle, sbuf);
2106 }
2107
2108 NTSTATUS smb_vfs_call_fstreaminfo(struct vfs_handle_struct *handle,
2109 struct files_struct *fsp,
2110 TALLOC_CTX *mem_ctx,
2111 unsigned int *num_streams,
2112 struct stream_struct **streams)
2113 {
2114 VFS_FIND(fstreaminfo);
2115 return handle->fns->fstreaminfo_fn(handle, fsp, mem_ctx,
2116 num_streams, streams);
2117 }
2118
2119 NTSTATUS smb_vfs_call_get_real_filename_at(struct vfs_handle_struct *handle,
2120 struct files_struct *dirfsp,
2121 const char *name,
2122 TALLOC_CTX *mem_ctx,
2123 char **found_name)
2124 {
2125 VFS_FIND(get_real_filename_at);
2126 return handle->fns->get_real_filename_at_fn(
2127 handle, dirfsp, name, mem_ctx, found_name);
2128 }
2129
2130 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
2131 const struct files_struct *dirfsp,
2132 const struct smb_filename *smb_fname)
2133 {
2134 VFS_FIND(connectpath);
2135 return handle->fns->connectpath_fn(handle, dirfsp, smb_fname);
2136 }
2137
2138 bool smb_vfs_call_strict_lock_check(struct vfs_handle_struct *handle,
2139 struct files_struct *fsp,
2140 struct lock_struct *plock)
2141 {
2142 VFS_FIND(strict_lock_check);
2143 return handle->fns->strict_lock_check_fn(handle, fsp, plock);
2144 }
2145
2146 NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
2147 const char *name,
2148 enum vfs_translate_direction direction,
2149 TALLOC_CTX *mem_ctx,
2150 char **mapped_name)
2151 {
2152 VFS_FIND(translate_name);
2153 return handle->fns->translate_name_fn(handle, name, direction, mem_ctx,
2154 mapped_name);
2155 }
2156
2157 NTSTATUS smb_vfs_call_parent_pathname(struct vfs_handle_struct *handle,
2158 TALLOC_CTX *mem_ctx,
2159 const struct smb_filename *smb_fname_in,
2160 struct smb_filename **parent_dir_out,
2161 struct smb_filename **atname_out)
2162 {
2163 VFS_FIND(parent_pathname);
2164 return handle->fns->parent_pathname_fn(handle,
2165 mem_ctx,
2166 smb_fname_in,
2167 parent_dir_out,
2168 atname_out);
2169 }
2170
2171 NTSTATUS smb_vfs_call_fsctl(struct vfs_handle_struct *handle,
2172 struct files_struct *fsp,
2173 TALLOC_CTX *ctx,
2174 uint32_t function,
2175 uint16_t req_flags,
2176 const uint8_t *in_data,
2177 uint32_t in_len,
2178 uint8_t **out_data,
2179 uint32_t max_out_len,
2180 uint32_t *out_len)
2181 {
2182 VFS_FIND(fsctl);
2183 return handle->fns->fsctl_fn(handle, fsp, ctx, function, req_flags,
2184 in_data, in_len, out_data, max_out_len,
2185 out_len);
2186 }
2187
2188 NTSTATUS smb_vfs_call_fget_dos_attributes(struct vfs_handle_struct *handle,
2189 struct files_struct *fsp,
2190 uint32_t *dosmode)
2191 {
2192 VFS_FIND(fget_dos_attributes);
2193 return handle->fns->fget_dos_attributes_fn(handle, fsp, dosmode);
2194 }
2195
2196 NTSTATUS smb_vfs_call_fset_dos_attributes(struct vfs_handle_struct *handle,
2197 struct files_struct *fsp,
2198 uint32_t dosmode)
2199 {
2200 VFS_FIND(fset_dos_attributes);
2201 return handle->fns->fset_dos_attributes_fn(handle, fsp, dosmode);
2202 }
2203
2204 struct tevent_req *smb_vfs_call_offload_read_send(TALLOC_CTX *mem_ctx,
2205 struct tevent_context *ev,
2206 struct vfs_handle_struct *handle,
2207 struct files_struct *fsp,
2208 uint32_t fsctl,
2209 uint32_t ttl,
2210 off_t offset,
2211 size_t to_copy)
2212 {
2213 VFS_FIND(offload_read_send);
2214 return handle->fns->offload_read_send_fn(mem_ctx, ev, handle,
2215 fsp, fsctl,
2216 ttl, offset, to_copy);
2217 }
2218
2219 NTSTATUS smb_vfs_call_offload_read_recv(struct tevent_req *req,
2220 struct vfs_handle_struct *handle,
2221 TALLOC_CTX *mem_ctx,
2222 uint32_t *flags,
2223 uint64_t *xferlen,
2224 DATA_BLOB *token_blob)
2225 {
2226 VFS_FIND(offload_read_recv);
2227 return handle->fns->offload_read_recv_fn(req, handle, mem_ctx, flags, xferlen, token_blob);
2228 }
2229
2230 struct tevent_req *smb_vfs_call_offload_write_send(struct vfs_handle_struct *handle,
2231 TALLOC_CTX *mem_ctx,
2232 struct tevent_context *ev,
2233 uint32_t fsctl,
2234 DATA_BLOB *token,
2235 off_t transfer_offset,
2236 struct files_struct *dest_fsp,
2237 off_t dest_off,
2238 off_t num)
2239 {
2240 VFS_FIND(offload_write_send);
2241 return handle->fns->offload_write_send_fn(handle, mem_ctx, ev, fsctl,
2242 token, transfer_offset,
2243 dest_fsp, dest_off, num);
2244 }
2245
2246 NTSTATUS smb_vfs_call_offload_write_recv(struct vfs_handle_struct *handle,
2247 struct tevent_req *req,
2248 off_t *copied)
2249 {
2250 VFS_FIND(offload_write_recv);
2251 return handle->fns->offload_write_recv_fn(handle, req, copied);
2252 }
2253
2254 struct smb_vfs_call_get_dos_attributes_state {
2255 files_struct *dir_fsp;
2256 NTSTATUS (*recv_fn)(struct tevent_req *req,
2257 struct vfs_aio_state *aio_state,
2258 uint32_t *dosmode);
2259 struct vfs_aio_state aio_state;
2260 uint32_t dos_attributes;
2261 };
2262
2263 static void smb_vfs_call_get_dos_attributes_done(struct tevent_req *subreq);
2264
2265 struct tevent_req *smb_vfs_call_get_dos_attributes_send(
2266 TALLOC_CTX *mem_ctx,
2267 struct tevent_context *ev,
2268 struct vfs_handle_struct *handle,
2269 files_struct *dir_fsp,
2270 struct smb_filename *smb_fname)
2271 {
2272 struct tevent_req *req = NULL;
2273 struct smb_vfs_call_get_dos_attributes_state *state = NULL;
2274 struct tevent_req *subreq = NULL;
2275
2276 req = tevent_req_create(mem_ctx, &state,
2277 struct smb_vfs_call_get_dos_attributes_state);
2278 if (req == NULL) {
2279 return NULL;
2280 }
2281
2282 VFS_FIND(get_dos_attributes_send);
2283
2284 *state = (struct smb_vfs_call_get_dos_attributes_state) {
2285 .dir_fsp = dir_fsp,
2286 .recv_fn = handle->fns->get_dos_attributes_recv_fn,
2287 };
2288
2289 subreq = handle->fns->get_dos_attributes_send_fn(mem_ctx,
2290 ev,
2291 handle,
2292 dir_fsp,
2293 smb_fname);
2294 if (tevent_req_nomem(subreq, req)) {
2295 return tevent_req_post(req, ev);
2296 }
2297 tevent_req_defer_callback(req, ev);
2298
2299 tevent_req_set_callback(subreq,
2300 smb_vfs_call_get_dos_attributes_done,
2301 req);
2302
2303 return req;
2304 }
2305
2306 static void smb_vfs_call_get_dos_attributes_done(struct tevent_req *subreq)
2307 {
2308 struct tevent_req *req =
2309 tevent_req_callback_data(subreq,
2310 struct tevent_req);
2311 struct smb_vfs_call_get_dos_attributes_state *state =
2312 tevent_req_data(req,
2313 struct smb_vfs_call_get_dos_attributes_state);
2314 NTSTATUS status;
2315 bool ok;
2316
2317 /*
2318 * Make sure we run as the user again
2319 */
2320 ok = change_to_user_and_service_by_fsp(state->dir_fsp);
2321 SMB_ASSERT(ok);
2322
2323 status = state->recv_fn(subreq,
2324 &state->aio_state,
2325 &state->dos_attributes);
2326 TALLOC_FREE(subreq);
2327 if (tevent_req_nterror(req, status)) {
2328 return;
2329 }
2330
2331 tevent_req_done(req);
2332 }
2333
2334 NTSTATUS smb_vfs_call_get_dos_attributes_recv(
2335 struct tevent_req *req,
2336 struct vfs_aio_state *aio_state,
2337 uint32_t *dos_attributes)
2338 {
2339 struct smb_vfs_call_get_dos_attributes_state *state =
2340 tevent_req_data(req,
2341 struct smb_vfs_call_get_dos_attributes_state);
2342 NTSTATUS status;
2343
2344 if (tevent_req_is_nterror(req, &status)) {
2345 tevent_req_received(req);
2346 return status;
2347 }
2348
2349 *aio_state = state->aio_state;
2350 *dos_attributes = state->dos_attributes;
2351 tevent_req_received(req);
2352 return NT_STATUS_OK;
2353 }
2354
2355 NTSTATUS smb_vfs_call_fget_compression(vfs_handle_struct *handle,
2356 TALLOC_CTX *mem_ctx,
2357 struct files_struct *fsp,
2358 uint16_t *_compression_fmt)
2359 {
2360 VFS_FIND(fget_compression);
2361 return handle->fns->fget_compression_fn(handle, mem_ctx, fsp,
2362 _compression_fmt);
2363 }
2364
2365 NTSTATUS smb_vfs_call_set_compression(vfs_handle_struct *handle,
2366 TALLOC_CTX *mem_ctx,
2367 struct files_struct *fsp,
2368 uint16_t compression_fmt)
2369 {
2370 VFS_FIND(set_compression);
2371 return handle->fns->set_compression_fn(handle, mem_ctx, fsp,
2372 compression_fmt);
2373 }
2374
2375 NTSTATUS smb_vfs_call_snap_check_path(vfs_handle_struct *handle,
2376 TALLOC_CTX *mem_ctx,
2377 const char *service_path,
2378 char **base_volume)
2379 {
2380 VFS_FIND(snap_check_path);
2381 return handle->fns->snap_check_path_fn(handle, mem_ctx, service_path,
2382 base_volume);
2383 }
2384
2385 NTSTATUS smb_vfs_call_snap_create(struct vfs_handle_struct *handle,
2386 TALLOC_CTX *mem_ctx,
2387 const char *base_volume,
2388 time_t *tstamp,
2389 bool rw,
2390 char **base_path,
2391 char **snap_path)
2392 {
2393 VFS_FIND(snap_create);
2394 return handle->fns->snap_create_fn(handle, mem_ctx, base_volume, tstamp,
2395 rw, base_path, snap_path);
2396 }
2397
2398 NTSTATUS smb_vfs_call_snap_delete(struct vfs_handle_struct *handle,
2399 TALLOC_CTX *mem_ctx,
2400 char *base_path,
2401 char *snap_path)
2402 {
2403 VFS_FIND(snap_delete);
2404 return handle->fns->snap_delete_fn(handle, mem_ctx, base_path,
2405 snap_path);
2406 }
2407
2408 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
2409 struct files_struct *fsp,
2410 uint32_t security_info,
2411 TALLOC_CTX *mem_ctx,
2412 struct security_descriptor **ppdesc)
2413 {
2414 VFS_FIND(fget_nt_acl);
2415 return handle->fns->fget_nt_acl_fn(handle, fsp, security_info,
2416 mem_ctx, ppdesc);
2417 }
2418
2419 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
2420 struct files_struct *fsp,
2421 uint32_t security_info_sent,
2422 const struct security_descriptor *psd)
2423 {
2424 VFS_FIND(fset_nt_acl);
2425 return handle->fns->fset_nt_acl_fn(handle, fsp, security_info_sent,
2426 psd);
2427 }
2428
2429 NTSTATUS smb_vfs_call_audit_file(struct vfs_handle_struct *handle,
2430 struct smb_filename *file,
2431 struct security_acl *sacl,
2432 uint32_t access_requested,
2433 uint32_t access_denied)
2434 {
2435 VFS_FIND(audit_file);
2436 return handle->fns->audit_file_fn(handle,
2437 file,
2438 sacl,
2439 access_requested,
2440 access_denied);
2441 }
2442
2443 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
2444 struct files_struct *fsp,
2445 SMB_ACL_TYPE_T type,
2446 TALLOC_CTX *mem_ctx)
2447 {
2448 VFS_FIND(sys_acl_get_fd);
2449 return handle->fns->sys_acl_get_fd_fn(handle, fsp, type, mem_ctx);
2450 }
2451
2452 int smb_vfs_call_sys_acl_blob_get_fd(struct vfs_handle_struct *handle,
2453 struct files_struct *fsp,
2454 TALLOC_CTX *mem_ctx,
2455 char **blob_description,
2456 DATA_BLOB *blob)
2457 {
2458 VFS_FIND(sys_acl_blob_get_fd);
2459 return handle->fns->sys_acl_blob_get_fd_fn(handle, fsp, mem_ctx, blob_description, blob);
2460 }
2461
2462 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
2463 struct files_struct *fsp,
2464 SMB_ACL_TYPE_T type,
2465 SMB_ACL_T theacl)
2466 {
2467 VFS_FIND(sys_acl_set_fd);
2468 return handle->fns->sys_acl_set_fd_fn(handle, fsp, type, theacl);
2469 }
2470
2471 int smb_vfs_call_sys_acl_delete_def_fd(struct vfs_handle_struct *handle,
2472 struct files_struct *fsp)
2473 {
2474 VFS_FIND(sys_acl_delete_def_fd);
2475 return handle->fns->sys_acl_delete_def_fd_fn(handle, fsp);
2476 }
2477
2478 struct smb_vfs_call_getxattrat_state {
2479 files_struct *dir_fsp;
2480 ssize_t (*recv_fn)(struct tevent_req *req,
2481 struct vfs_aio_state *aio_state,
2482 TALLOC_CTX *mem_ctx,
2483 uint8_t **xattr_value);
2484 ssize_t retval;
2485 uint8_t *xattr_value;
2486 struct vfs_aio_state aio_state;
2487 };
2488
2489 static void smb_vfs_call_getxattrat_done(struct tevent_req *subreq);
2490
2491 struct tevent_req *smb_vfs_call_getxattrat_send(
2492 TALLOC_CTX *mem_ctx,
2493 struct tevent_context *ev,
2494 struct vfs_handle_struct *handle,
2495 files_struct *dir_fsp,
2496 const struct smb_filename *smb_fname,
2497 const char *xattr_name,
2498 size_t alloc_hint)
2499 {
2500 struct tevent_req *req = NULL;
2501 struct smb_vfs_call_getxattrat_state *state = NULL;
2502 struct tevent_req *subreq = NULL;
2503
2504 req = tevent_req_create(mem_ctx, &state,
2505 struct smb_vfs_call_getxattrat_state);
2506 if (req == NULL) {
2507 return NULL;
2508 }
2509
2510 VFS_FIND(getxattrat_send);
2511
2512 *state = (struct smb_vfs_call_getxattrat_state) {
2513 .dir_fsp = dir_fsp,
2514 .recv_fn = handle->fns->getxattrat_recv_fn,
2515 };
2516
2517 subreq = handle->fns->getxattrat_send_fn(mem_ctx,
2518 ev,
2519 handle,
2520 dir_fsp,
2521 smb_fname,
2522 xattr_name,
2523 alloc_hint);
2524 if (tevent_req_nomem(subreq, req)) {
2525 return tevent_req_post(req, ev);
2526 }
2527 tevent_req_defer_callback(req, ev);
2528
2529 tevent_req_set_callback(subreq, smb_vfs_call_getxattrat_done, req);
2530 return req;
2531 }
2532
2533 static void smb_vfs_call_getxattrat_done(struct tevent_req *subreq)
2534 {
2535 struct tevent_req *req = tevent_req_callback_data(
2536 subreq, struct tevent_req);
2537 struct smb_vfs_call_getxattrat_state *state = tevent_req_data(
2538 req, struct smb_vfs_call_getxattrat_state);
2539 bool ok;
2540
2541 /*
2542 * Make sure we run as the user again
2543 */
2544 ok = change_to_user_and_service_by_fsp(state->dir_fsp);
2545 SMB_ASSERT(ok);
2546
2547 state->retval = state->recv_fn(subreq,
2548 &state->aio_state,
2549 state,
2550 &state->xattr_value);
2551 TALLOC_FREE(subreq);
2552 if (state->retval == -1) {
2553 tevent_req_error(req, state->aio_state.error);
2554 return;
2555 }
2556
2557 tevent_req_done(req);
2558 }
2559
2560 ssize_t smb_vfs_call_getxattrat_recv(struct tevent_req *req,
2561 struct vfs_aio_state *aio_state,
2562 TALLOC_CTX *mem_ctx,
2563 uint8_t **xattr_value)
2564 {
2565 struct smb_vfs_call_getxattrat_state *state = tevent_req_data(
2566 req, struct smb_vfs_call_getxattrat_state);
2567 size_t xattr_size;
2568
2569 if (tevent_req_is_unix_error(req, &aio_state->error)) {
2570 tevent_req_received(req);
2571 return -1;
2572 }
2573
2574 *aio_state = state->aio_state;
2575 xattr_size = state->retval;
2576 if (xattr_value != NULL) {
2577 *xattr_value = talloc_move(mem_ctx, &state->xattr_value);
2578 }
2579
2580 tevent_req_received(req);
2581 return xattr_size;
2582 }
2583
2584 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
2585 struct files_struct *fsp, const char *name,
2586 void *value, size_t size)
2587 {
2588 VFS_FIND(fgetxattr);
2589 return handle->fns->fgetxattr_fn(handle, fsp, name, value, size);
2590 }
2591
2592 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
2593 struct files_struct *fsp, char *list,
2594 size_t size)
2595 {
2596 VFS_FIND(flistxattr);
2597 return handle->fns->flistxattr_fn(handle, fsp, list, size);
2598 }
2599
2600 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
2601 struct files_struct *fsp, const char *name)
2602 {
2603 VFS_FIND(fremovexattr);
2604 return handle->fns->fremovexattr_fn(handle, fsp, name);
2605 }
2606
2607 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
2608 struct files_struct *fsp, const char *name,
2609 const void *value, size_t size, int flags)
2610 {
2611 VFS_FIND(fsetxattr);
2612 return handle->fns->fsetxattr_fn(handle, fsp, name, value, size, flags);
2613 }
2614
2615 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
2616 struct files_struct *fsp)
2617 {
2618 VFS_FIND(aio_force);
2619 return handle->fns->aio_force_fn(handle, fsp);
2620 }
2621
2622 NTSTATUS smb_vfs_call_durable_cookie(struct vfs_handle_struct *handle,
2623 struct files_struct *fsp,
2624 TALLOC_CTX *mem_ctx,
2625 DATA_BLOB *cookie)
2626 {
2627 VFS_FIND(durable_cookie);
2628 return handle->fns->durable_cookie_fn(handle, fsp, mem_ctx, cookie);
2629 }
2630
2631 NTSTATUS smb_vfs_call_durable_disconnect(struct vfs_handle_struct *handle,
2632 struct files_struct *fsp,
2633 const DATA_BLOB old_cookie,
2634 TALLOC_CTX *mem_ctx,
2635 DATA_BLOB *new_cookie)
2636 {
2637 VFS_FIND(durable_disconnect);
2638 return handle->fns->durable_disconnect_fn(handle, fsp, old_cookie,
2639 mem_ctx, new_cookie);
2640 }
2641
2642 NTSTATUS smb_vfs_call_durable_reconnect(struct vfs_handle_struct *handle,
2643 struct smb_request *smb1req,
2644 struct smbXsrv_open *op,
2645 const DATA_BLOB old_cookie,
2646 TALLOC_CTX *mem_ctx,
2647 struct files_struct **fsp,
2648 DATA_BLOB *new_cookie)
2649 {
2650 VFS_FIND(durable_reconnect);
2651 return handle->fns->durable_reconnect_fn(handle, smb1req, op,
2652 old_cookie, mem_ctx, fsp,
2653 new_cookie);
2654 }
2655
2656 NTSTATUS smb_vfs_call_freaddir_attr(struct vfs_handle_struct *handle,
2657 struct files_struct *fsp,
2658 TALLOC_CTX *mem_ctx,
2659 struct readdir_attr_data **attr_data)
2660 {
2661 VFS_FIND(freaddir_attr);
2662 return handle->fns->freaddir_attr_fn(handle,
2663 fsp,
2664 mem_ctx,
2665 attr_data);
2666 }
2667
2668 bool smb_vfs_call_lock(struct vfs_handle_struct *handle,
2669 struct files_struct *fsp, int op, off_t offset,
2670 off_t count, int type)
2671 {
2672 VFS_FIND(lock);
2673 return handle->fns->lock_fn(handle, fsp, op, offset, count, type);
2674 }
2675
2676 bool smb_vfs_call_getlock(struct vfs_handle_struct *handle,
2677 struct files_struct *fsp, off_t *poffset,
2678 off_t *pcount, int *ptype, pid_t *ppid)
2679 {
2680 VFS_FIND(getlock);
2681 return handle->fns->getlock_fn(handle, fsp, poffset, pcount, ptype,
2682 ppid);
2683 }
2684
2685 NTSTATUS smb_vfs_call_brl_lock_windows(struct vfs_handle_struct *handle,
2686 struct byte_range_lock *br_lck,
2687 struct lock_struct *plock)
2688 {
2689 VFS_FIND(brl_lock_windows);
2690 return handle->fns->brl_lock_windows_fn(handle, br_lck, plock);
2691 }
2692
2693 bool smb_vfs_call_brl_unlock_windows(struct vfs_handle_struct *handle,
2694 struct byte_range_lock *br_lck,
2695 const struct lock_struct *plock)
2696 {
2697 VFS_FIND(brl_unlock_windows);
2698 return handle->fns->brl_unlock_windows_fn(handle, br_lck, plock);
2699 }
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