?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
s4:auth: Set ‘authoritative’ even if there is an error
[Samba.git] / source3 / smbd / vfs.c
blob89150b37f90a21cc7d5ba0cdbade29fd3d1c6d31
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_get_pathref_fd(fsp) == -1) {
1170 if (fsp->posix_flags & FSP_POSIX_FLAGS_OPEN) {
1171 ret = SMB_VFS_LSTAT(fsp->conn, fsp->fsp_name);
1172 } else {
1173 ret = SMB_VFS_STAT(fsp->conn, fsp->fsp_name);
1174 }
1175 } else {
1176 ret = SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st);
1177 }
1178 if (ret == -1) {
1179 return map_nt_error_from_unix(errno);
1180 }
1181 update_stat_ex_from_saved_stat(&fsp->fsp_name->st, &saved_stat);
1182 fsp->fsp_flags.is_directory = S_ISDIR(fsp->fsp_name->st.st_ex_mode);
1183 return NT_STATUS_OK;
1184 }
1185
1186 void init_smb_file_time(struct smb_file_time *ft)
1187 {
1188 *ft = (struct smb_file_time) {
1189 .atime = make_omit_timespec(),
1190 .ctime = make_omit_timespec(),
1191 .mtime = make_omit_timespec(),
1192 .create_time = make_omit_timespec()
1193 };
1194 }
1195
1196 /**
1197 * Initialize num_streams and streams, then call VFS op streaminfo
1198 */
1199
1200 NTSTATUS vfs_fstreaminfo(struct files_struct *fsp,
1201 TALLOC_CTX *mem_ctx,
1202 unsigned int *num_streams,
1203 struct stream_struct **streams)
1204 {
1205 *num_streams = 0;
1206 *streams = NULL;
1207
1208 if (fsp == NULL) {
1209 /*
1210 * Callers may pass fsp == NULL when passing smb_fname->fsp of a
1211 * symlink. This is ok, handle it here, by just return no
1212 * streams on a symlink.
1213 */
1214 return NT_STATUS_OK;
1215 }
1216
1217 if (fsp_get_pathref_fd(fsp) == -1) {
1218 /*
1219 * No streams on non-real files/directories.
1220 */
1221 return NT_STATUS_OK;
1222 }
1223
1224 return SMB_VFS_FSTREAMINFO(fsp,
1225 mem_ctx,
1226 num_streams,
1227 streams);
1228 }
1229
1230 int vfs_fake_fd(void)
1231 {
1232 int pipe_fds[2];
1233 int ret;
1234
1235 /*
1236 * Return a valid fd, but ensure any attempt to use
1237 * it returns an error (EPIPE).
1238 */
1239 ret = pipe(pipe_fds);
1240 if (ret != 0) {
1241 return -1;
1242 }
1243
1244 close(pipe_fds[1]);
1245 return pipe_fds[0];
1246 }
1247
1248 /*
1249 * This is just a helper to make
1250 * users of vfs_fake_fd() more symmetric
1251 */
1252 int vfs_fake_fd_close(int fd)
1253 {
1254 return close(fd);
1255 }
1256
1257 /*
1258 generate a file_id from a stat structure
1259 */
1260 struct file_id vfs_file_id_from_sbuf(connection_struct *conn, const SMB_STRUCT_STAT *sbuf)
1261 {
1262 return SMB_VFS_FILE_ID_CREATE(conn, sbuf);
1263 }
1264
1265 NTSTATUS vfs_at_fspcwd(TALLOC_CTX *mem_ctx,
1266 struct connection_struct *conn,
1267 struct files_struct **_fsp)
1268 {
1269 struct files_struct *fsp = NULL;
1270
1271 fsp = talloc_zero(mem_ctx, struct files_struct);
1272 if (fsp == NULL) {
1273 return NT_STATUS_NO_MEMORY;
1274 }
1275
1276 fsp->fsp_name = synthetic_smb_fname(fsp, ".", NULL, NULL, 0, 0);
1277 if (fsp->fsp_name == NULL) {
1278 TALLOC_FREE(fsp);
1279 return NT_STATUS_NO_MEMORY;
1280 }
1281
1282 fsp->fh = fd_handle_create(fsp);
1283 if (fsp->fh == NULL) {
1284 TALLOC_FREE(fsp);
1285 return NT_STATUS_NO_MEMORY;
1286 }
1287
1288 fsp_set_fd(fsp, AT_FDCWD);
1289 fsp->fnum = FNUM_FIELD_INVALID;
1290 fsp->conn = conn;
1291
1292 *_fsp = fsp;
1293 return NT_STATUS_OK;
1294 }
1295
1296 NTSTATUS vfs_fget_dos_attributes(struct files_struct *fsp,
1297 uint32_t *dosmode)
1298 {
1299 NTSTATUS status;
1300
1301 /*
1302 * First make sure to pass the base_fsp to the VFS
1303 */
1304 status = SMB_VFS_FGET_DOS_ATTRIBUTES(
1305 fsp->conn, metadata_fsp(fsp), dosmode);
1306 if (!NT_STATUS_IS_OK(status)) {
1307 return status;
1308 }
1309
1310 /*
1311 * If this isn't a stream fsp we're done, ...
1312 */
1313 if (!fsp_is_alternate_stream(fsp)) {
1314 return NT_STATUS_OK;
1315 }
1316
1317 /*
1318 * ...otherwise the VFS might have updated the btime, propagate the
1319 * btime from the base_fsp to the stream fsp.
1320 */
1321
1322 if (fsp->base_fsp->fsp_name->st.st_ex_iflags & ST_EX_IFLAG_CALCULATED_BTIME) {
1323 /*
1324 * Not a value from backend storage, ignore it
1325 */
1326 return NT_STATUS_OK;
1327 }
1328
1329 update_stat_ex_create_time(&fsp->fsp_name->st,
1330 fsp->base_fsp->fsp_name->st.st_ex_btime);
1331
1332 return NT_STATUS_OK;
1333 }
1334
1335 static struct smb_vfs_deny_state *smb_vfs_deny_global;
1336
1337 void smb_vfs_assert_allowed(void)
1338 {
1339 if (unlikely(smb_vfs_deny_global != NULL)) {
1340 DBG_ERR("Called with VFS denied by %s\n",
1341 smb_vfs_deny_global->location);
1342 smb_panic("Called with VFS denied!");
1343 }
1344 }
1345
1346 void _smb_vfs_deny_push(struct smb_vfs_deny_state *state, const char *location)
1347 {
1348 SMB_ASSERT(smb_vfs_deny_global != state);
1349
1350 *state = (struct smb_vfs_deny_state) {
1351 .parent = smb_vfs_deny_global,
1352 .location = location,
1353 };
1354
1355 smb_vfs_deny_global = state;
1356 }
1357
1358 void _smb_vfs_deny_pop(struct smb_vfs_deny_state *state, const char *location)
1359 {
1360 SMB_ASSERT(smb_vfs_deny_global == state);
1361
1362 smb_vfs_deny_global = state->parent;
1363
1364 *state = (struct smb_vfs_deny_state) { .parent = NULL, };
1365 }
1366
1367 #define VFS_FIND(__fn__) do { \
1368 if (unlikely(smb_vfs_deny_global != NULL)) { \
1369 DBG_ERR("Called with VFS denied by %s\n", \
1370 smb_vfs_deny_global->location); \
1371 smb_panic("Called with VFS denied!"); \
1372 } \
1373 while (handle->fns->__fn__##_fn==NULL) { \
1374 handle = handle->next; \
1375 } \
1376 } while(0)
1377
1378 int smb_vfs_call_connect(struct vfs_handle_struct *handle,
1379 const char *service, const char *user)
1380 {
1381 VFS_FIND(connect);
1382 return handle->fns->connect_fn(handle, service, user);
1383 }
1384
1385 void smb_vfs_call_disconnect(struct vfs_handle_struct *handle)
1386 {
1387 VFS_FIND(disconnect);
1388 handle->fns->disconnect_fn(handle);
1389 }
1390
1391 uint64_t smb_vfs_call_disk_free(struct vfs_handle_struct *handle,
1392 const struct smb_filename *smb_fname,
1393 uint64_t *bsize,
1394 uint64_t *dfree,
1395 uint64_t *dsize)
1396 {
1397 VFS_FIND(disk_free);
1398 return handle->fns->disk_free_fn(handle, smb_fname,
1399 bsize, dfree, dsize);
1400 }
1401
1402 int smb_vfs_call_get_quota(struct vfs_handle_struct *handle,
1403 const struct smb_filename *smb_fname,
1404 enum SMB_QUOTA_TYPE qtype,
1405 unid_t id,
1406 SMB_DISK_QUOTA *qt)
1407 {
1408 VFS_FIND(get_quota);
1409 return handle->fns->get_quota_fn(handle, smb_fname, qtype, id, qt);
1410 }
1411
1412 int smb_vfs_call_set_quota(struct vfs_handle_struct *handle,
1413 enum SMB_QUOTA_TYPE qtype, unid_t id,
1414 SMB_DISK_QUOTA *qt)
1415 {
1416 VFS_FIND(set_quota);
1417 return handle->fns->set_quota_fn(handle, qtype, id, qt);
1418 }
1419
1420 int smb_vfs_call_get_shadow_copy_data(struct vfs_handle_struct *handle,
1421 struct files_struct *fsp,
1422 struct shadow_copy_data *shadow_copy_data,
1423 bool labels)
1424 {
1425 VFS_FIND(get_shadow_copy_data);
1426 return handle->fns->get_shadow_copy_data_fn(handle, fsp,
1427 shadow_copy_data,
1428 labels);
1429 }
1430 int smb_vfs_call_statvfs(struct vfs_handle_struct *handle,
1431 const struct smb_filename *smb_fname,
1432 struct vfs_statvfs_struct *statbuf)
1433 {
1434 VFS_FIND(statvfs);
1435 return handle->fns->statvfs_fn(handle, smb_fname, statbuf);
1436 }
1437
1438 uint32_t smb_vfs_call_fs_capabilities(struct vfs_handle_struct *handle,
1439 enum timestamp_set_resolution *p_ts_res)
1440 {
1441 VFS_FIND(fs_capabilities);
1442 return handle->fns->fs_capabilities_fn(handle, p_ts_res);
1443 }
1444
1445 NTSTATUS smb_vfs_call_get_dfs_referrals(struct vfs_handle_struct *handle,
1446 struct dfs_GetDFSReferral *r)
1447 {
1448 VFS_FIND(get_dfs_referrals);
1449 return handle->fns->get_dfs_referrals_fn(handle, r);
1450 }
1451
1452 NTSTATUS smb_vfs_call_create_dfs_pathat(struct vfs_handle_struct *handle,
1453 struct files_struct *dirfsp,
1454 const struct smb_filename *smb_fname,
1455 const struct referral *reflist,
1456 size_t referral_count)
1457 {
1458 VFS_FIND(create_dfs_pathat);
1459 return handle->fns->create_dfs_pathat_fn(handle,
1460 dirfsp,
1461 smb_fname,
1462 reflist,
1463 referral_count);
1464 }
1465
1466 NTSTATUS smb_vfs_call_read_dfs_pathat(struct vfs_handle_struct *handle,
1467 TALLOC_CTX *mem_ctx,
1468 struct files_struct *dirfsp,
1469 struct smb_filename *smb_fname,
1470 struct referral **ppreflist,
1471 size_t *preferral_count)
1472 {
1473 VFS_FIND(read_dfs_pathat);
1474 return handle->fns->read_dfs_pathat_fn(handle,
1475 mem_ctx,
1476 dirfsp,
1477 smb_fname,
1478 ppreflist,
1479 preferral_count);
1480 }
1481
1482 DIR *smb_vfs_call_fdopendir(struct vfs_handle_struct *handle,
1483 struct files_struct *fsp,
1484 const char *mask,
1485 uint32_t attributes)
1486 {
1487 VFS_FIND(fdopendir);
1488 return handle->fns->fdopendir_fn(handle, fsp, mask, attributes);
1489 }
1490
1491 struct dirent *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
1492 struct files_struct *dirfsp,
1493 DIR *dirp)
1494 {
1495 VFS_FIND(readdir);
1496 return handle->fns->readdir_fn(handle, dirfsp, dirp);
1497 }
1498
1499 void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
1500 DIR *dirp)
1501 {
1502 VFS_FIND(rewind_dir);
1503 handle->fns->rewind_dir_fn(handle, dirp);
1504 }
1505
1506 int smb_vfs_call_mkdirat(struct vfs_handle_struct *handle,
1507 struct files_struct *dirfsp,
1508 const struct smb_filename *smb_fname,
1509 mode_t mode)
1510 {
1511 VFS_FIND(mkdirat);
1512 return handle->fns->mkdirat_fn(handle,
1513 dirfsp,
1514 smb_fname,
1515 mode);
1516 }
1517
1518 int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
1519 DIR *dir)
1520 {
1521 VFS_FIND(closedir);
1522 return handle->fns->closedir_fn(handle, dir);
1523 }
1524
1525 int smb_vfs_call_openat(struct vfs_handle_struct *handle,
1526 const struct files_struct *dirfsp,
1527 const struct smb_filename *smb_fname,
1528 struct files_struct *fsp,
1529 const struct vfs_open_how *how)
1530 {
1531 VFS_FIND(openat);
1532 return handle->fns->openat_fn(handle,
1533 dirfsp,
1534 smb_fname,
1535 fsp,
1536 how);
1537 }
1538
1539 NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
1540 struct smb_request *req,
1541 struct files_struct *dirfsp,
1542 struct smb_filename *smb_fname,
1543 uint32_t access_mask,
1544 uint32_t share_access,
1545 uint32_t create_disposition,
1546 uint32_t create_options,
1547 uint32_t file_attributes,
1548 uint32_t oplock_request,
1549 const struct smb2_lease *lease,
1550 uint64_t allocation_size,
1551 uint32_t private_flags,
1552 struct security_descriptor *sd,
1553 struct ea_list *ea_list,
1554 files_struct **result,
1555 int *pinfo,
1556 const struct smb2_create_blobs *in_context_blobs,
1557 struct smb2_create_blobs *out_context_blobs)
1558 {
1559 VFS_FIND(create_file);
1560 return handle->fns->create_file_fn(
1561 handle, req, dirfsp, smb_fname,
1562 access_mask, share_access, create_disposition, create_options,
1563 file_attributes, oplock_request, lease, allocation_size,
1564 private_flags, sd, ea_list,
1565 result, pinfo, in_context_blobs, out_context_blobs);
1566 }
1567
1568 int smb_vfs_call_close(struct vfs_handle_struct *handle,
1569 struct files_struct *fsp)
1570 {
1571 VFS_FIND(close);
1572 return handle->fns->close_fn(handle, fsp);
1573 }
1574
1575 ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
1576 struct files_struct *fsp, void *data, size_t n,
1577 off_t offset)
1578 {
1579 VFS_FIND(pread);
1580 return handle->fns->pread_fn(handle, fsp, data, n, offset);
1581 }
1582
1583 struct smb_vfs_call_pread_state {
1584 ssize_t (*recv_fn)(struct tevent_req *req, struct vfs_aio_state *vfs_aio_state);
1585 ssize_t retval;
1586 struct vfs_aio_state vfs_aio_state;
1587 };
1588
1589 static void smb_vfs_call_pread_done(struct tevent_req *subreq);
1590
1591 struct tevent_req *smb_vfs_call_pread_send(struct vfs_handle_struct *handle,
1592 TALLOC_CTX *mem_ctx,
1593 struct tevent_context *ev,
1594 struct files_struct *fsp,
1595 void *data,
1596 size_t n, off_t offset)
1597 {
1598 struct tevent_req *req, *subreq;
1599 struct smb_vfs_call_pread_state *state;
1600
1601 req = tevent_req_create(mem_ctx, &state,
1602 struct smb_vfs_call_pread_state);
1603 if (req == NULL) {
1604 return NULL;
1605 }
1606 VFS_FIND(pread_send);
1607 state->recv_fn = handle->fns->pread_recv_fn;
1608
1609 subreq = handle->fns->pread_send_fn(handle, state, ev, fsp, data, n,
1610 offset);
1611 if (tevent_req_nomem(subreq, req)) {
1612 return tevent_req_post(req, ev);
1613 }
1614 tevent_req_set_callback(subreq, smb_vfs_call_pread_done, req);
1615 return req;
1616 }
1617
1618 static void smb_vfs_call_pread_done(struct tevent_req *subreq)
1619 {
1620 struct tevent_req *req = tevent_req_callback_data(
1621 subreq, struct tevent_req);
1622 struct smb_vfs_call_pread_state *state = tevent_req_data(
1623 req, struct smb_vfs_call_pread_state);
1624
1625 state->retval = state->recv_fn(subreq, &state->vfs_aio_state);
1626 TALLOC_FREE(subreq);
1627 if (state->retval == -1) {
1628 tevent_req_error(req, state->vfs_aio_state.error);
1629 return;
1630 }
1631 tevent_req_done(req);
1632 }
1633
1634 ssize_t SMB_VFS_PREAD_RECV(struct tevent_req *req,
1635 struct vfs_aio_state *vfs_aio_state)
1636 {
1637 struct smb_vfs_call_pread_state *state = tevent_req_data(
1638 req, struct smb_vfs_call_pread_state);
1639 ssize_t retval;
1640
1641 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1642 tevent_req_received(req);
1643 return -1;
1644 }
1645 *vfs_aio_state = state->vfs_aio_state;
1646 retval = state->retval;
1647 tevent_req_received(req);
1648 return retval;
1649 }
1650
1651 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
1652 struct files_struct *fsp, const void *data,
1653 size_t n, off_t offset)
1654 {
1655 VFS_FIND(pwrite);
1656 return handle->fns->pwrite_fn(handle, fsp, data, n, offset);
1657 }
1658
1659 struct smb_vfs_call_pwrite_state {
1660 ssize_t (*recv_fn)(struct tevent_req *req, struct vfs_aio_state *vfs_aio_state);
1661 ssize_t retval;
1662 struct vfs_aio_state vfs_aio_state;
1663 };
1664
1665 static void smb_vfs_call_pwrite_done(struct tevent_req *subreq);
1666
1667 struct tevent_req *smb_vfs_call_pwrite_send(struct vfs_handle_struct *handle,
1668 TALLOC_CTX *mem_ctx,
1669 struct tevent_context *ev,
1670 struct files_struct *fsp,
1671 const void *data,
1672 size_t n, off_t offset)
1673 {
1674 struct tevent_req *req, *subreq;
1675 struct smb_vfs_call_pwrite_state *state;
1676
1677 req = tevent_req_create(mem_ctx, &state,
1678 struct smb_vfs_call_pwrite_state);
1679 if (req == NULL) {
1680 return NULL;
1681 }
1682 VFS_FIND(pwrite_send);
1683 state->recv_fn = handle->fns->pwrite_recv_fn;
1684
1685 subreq = handle->fns->pwrite_send_fn(handle, state, ev, fsp, data, n,
1686 offset);
1687 if (tevent_req_nomem(subreq, req)) {
1688 return tevent_req_post(req, ev);
1689 }
1690 tevent_req_set_callback(subreq, smb_vfs_call_pwrite_done, req);
1691 return req;
1692 }
1693
1694 static void smb_vfs_call_pwrite_done(struct tevent_req *subreq)
1695 {
1696 struct tevent_req *req = tevent_req_callback_data(
1697 subreq, struct tevent_req);
1698 struct smb_vfs_call_pwrite_state *state = tevent_req_data(
1699 req, struct smb_vfs_call_pwrite_state);
1700
1701 state->retval = state->recv_fn(subreq, &state->vfs_aio_state);
1702 TALLOC_FREE(subreq);
1703 if (state->retval == -1) {
1704 tevent_req_error(req, state->vfs_aio_state.error);
1705 return;
1706 }
1707 tevent_req_done(req);
1708 }
1709
1710 ssize_t SMB_VFS_PWRITE_RECV(struct tevent_req *req,
1711 struct vfs_aio_state *vfs_aio_state)
1712 {
1713 struct smb_vfs_call_pwrite_state *state = tevent_req_data(
1714 req, struct smb_vfs_call_pwrite_state);
1715 ssize_t retval;
1716
1717 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1718 tevent_req_received(req);
1719 return -1;
1720 }
1721 *vfs_aio_state = state->vfs_aio_state;
1722 retval = state->retval;
1723 tevent_req_received(req);
1724 return retval;
1725 }
1726
1727 off_t smb_vfs_call_lseek(struct vfs_handle_struct *handle,
1728 struct files_struct *fsp, off_t offset,
1729 int whence)
1730 {
1731 VFS_FIND(lseek);
1732 return handle->fns->lseek_fn(handle, fsp, offset, whence);
1733 }
1734
1735 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
1736 files_struct *fromfsp, const DATA_BLOB *header,
1737 off_t offset, size_t count)
1738 {
1739 VFS_FIND(sendfile);
1740 return handle->fns->sendfile_fn(handle, tofd, fromfsp, header, offset,
1741 count);
1742 }
1743
1744 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
1745 files_struct *tofsp, off_t offset,
1746 size_t count)
1747 {
1748 VFS_FIND(recvfile);
1749 return handle->fns->recvfile_fn(handle, fromfd, tofsp, offset, count);
1750 }
1751
1752 int smb_vfs_call_renameat(struct vfs_handle_struct *handle,
1753 files_struct *srcfsp,
1754 const struct smb_filename *smb_fname_src,
1755 files_struct *dstfsp,
1756 const struct smb_filename *smb_fname_dst)
1757 {
1758 VFS_FIND(renameat);
1759 return handle->fns->renameat_fn(handle,
1760 srcfsp,
1761 smb_fname_src,
1762 dstfsp,
1763 smb_fname_dst);
1764 }
1765
1766 struct smb_vfs_call_fsync_state {
1767 int (*recv_fn)(struct tevent_req *req, struct vfs_aio_state *vfs_aio_state);
1768 int retval;
1769 struct vfs_aio_state vfs_aio_state;
1770 };
1771
1772 static void smb_vfs_call_fsync_done(struct tevent_req *subreq);
1773
1774 struct tevent_req *smb_vfs_call_fsync_send(struct vfs_handle_struct *handle,
1775 TALLOC_CTX *mem_ctx,
1776 struct tevent_context *ev,
1777 struct files_struct *fsp)
1778 {
1779 struct tevent_req *req, *subreq;
1780 struct smb_vfs_call_fsync_state *state;
1781
1782 req = tevent_req_create(mem_ctx, &state,
1783 struct smb_vfs_call_fsync_state);
1784 if (req == NULL) {
1785 return NULL;
1786 }
1787 VFS_FIND(fsync_send);
1788 state->recv_fn = handle->fns->fsync_recv_fn;
1789
1790 subreq = handle->fns->fsync_send_fn(handle, state, ev, fsp);
1791 if (tevent_req_nomem(subreq, req)) {
1792 return tevent_req_post(req, ev);
1793 }
1794 tevent_req_set_callback(subreq, smb_vfs_call_fsync_done, req);
1795 return req;
1796 }
1797
1798 static void smb_vfs_call_fsync_done(struct tevent_req *subreq)
1799 {
1800 struct tevent_req *req = tevent_req_callback_data(
1801 subreq, struct tevent_req);
1802 struct smb_vfs_call_fsync_state *state = tevent_req_data(
1803 req, struct smb_vfs_call_fsync_state);
1804
1805 state->retval = state->recv_fn(subreq, &state->vfs_aio_state);
1806 TALLOC_FREE(subreq);
1807 if (state->retval == -1) {
1808 tevent_req_error(req, state->vfs_aio_state.error);
1809 return;
1810 }
1811 tevent_req_done(req);
1812 }
1813
1814 int SMB_VFS_FSYNC_RECV(struct tevent_req *req, struct vfs_aio_state *vfs_aio_state)
1815 {
1816 struct smb_vfs_call_fsync_state *state = tevent_req_data(
1817 req, struct smb_vfs_call_fsync_state);
1818 ssize_t retval;
1819
1820 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1821 tevent_req_received(req);
1822 return -1;
1823 }
1824 *vfs_aio_state = state->vfs_aio_state;
1825 retval = state->retval;
1826 tevent_req_received(req);
1827 return retval;
1828 }
1829
1830 /*
1831 * Synchronous version of fsync, built from backend
1832 * async VFS primitives. Uses a temporary sub-event
1833 * context (NOT NESTED).
1834 */
1835
1836 int smb_vfs_fsync_sync(files_struct *fsp)
1837 {
1838 TALLOC_CTX *frame = talloc_stackframe();
1839 struct tevent_req *req = NULL;
1840 struct vfs_aio_state aio_state = { 0 };
1841 int ret = -1;
1842 bool ok;
1843 struct tevent_context *ev = samba_tevent_context_init(frame);
1844
1845 if (ev == NULL) {
1846 goto out;
1847 }
1848
1849 req = SMB_VFS_FSYNC_SEND(talloc_tos(), ev, fsp);
1850 if (req == NULL) {
1851 goto out;
1852 }
1853
1854 ok = tevent_req_poll(req, ev);
1855 if (!ok) {
1856 goto out;
1857 }
1858
1859 ret = SMB_VFS_FSYNC_RECV(req, &aio_state);
1860
1861 out:
1862
1863 TALLOC_FREE(frame);
1864 if (aio_state.error != 0) {
1865 errno = aio_state.error;
1866 }
1867 return ret;
1868 }
1869
1870 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
1871 struct smb_filename *smb_fname)
1872 {
1873 VFS_FIND(stat);
1874 return handle->fns->stat_fn(handle, smb_fname);
1875 }
1876
1877 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
1878 struct files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1879 {
1880 VFS_FIND(fstat);
1881 return handle->fns->fstat_fn(handle, fsp, sbuf);
1882 }
1883
1884 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
1885 struct smb_filename *smb_filename)
1886 {
1887 VFS_FIND(lstat);
1888 return handle->fns->lstat_fn(handle, smb_filename);
1889 }
1890
1891 int smb_vfs_call_fstatat(
1892 struct vfs_handle_struct *handle,
1893 const struct files_struct *dirfsp,
1894 const struct smb_filename *smb_fname,
1895 SMB_STRUCT_STAT *sbuf,
1896 int flags)
1897 {
1898 VFS_FIND(fstatat);
1899 return handle->fns->fstatat_fn(handle, dirfsp, smb_fname, sbuf, flags);
1900 }
1901
1902 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
1903 struct files_struct *fsp,
1904 const SMB_STRUCT_STAT *sbuf)
1905 {
1906 VFS_FIND(get_alloc_size);
1907 return handle->fns->get_alloc_size_fn(handle, fsp, sbuf);
1908 }
1909
1910 int smb_vfs_call_unlinkat(struct vfs_handle_struct *handle,
1911 struct files_struct *dirfsp,
1912 const struct smb_filename *smb_fname,
1913 int flags)
1914 {
1915 VFS_FIND(unlinkat);
1916 return handle->fns->unlinkat_fn(handle,
1917 dirfsp,
1918 smb_fname,
1919 flags);
1920 }
1921
1922 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
1923 struct files_struct *fsp, mode_t mode)
1924 {
1925 VFS_FIND(fchmod);
1926 return handle->fns->fchmod_fn(handle, fsp, mode);
1927 }
1928
1929 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
1930 struct files_struct *fsp, uid_t uid, gid_t gid)
1931 {
1932 VFS_FIND(fchown);
1933 return handle->fns->fchown_fn(handle, fsp, uid, gid);
1934 }
1935
1936 int smb_vfs_call_lchown(struct vfs_handle_struct *handle,
1937 const struct smb_filename *smb_fname,
1938 uid_t uid,
1939 gid_t gid)
1940 {
1941 VFS_FIND(lchown);
1942 return handle->fns->lchown_fn(handle, smb_fname, uid, gid);
1943 }
1944
1945 int smb_vfs_call_chdir(struct vfs_handle_struct *handle,
1946 const struct smb_filename *smb_fname)
1947 {
1948 VFS_FIND(chdir);
1949 return handle->fns->chdir_fn(handle, smb_fname);
1950 }
1951
1952 struct smb_filename *smb_vfs_call_getwd(struct vfs_handle_struct *handle,
1953 TALLOC_CTX *ctx)
1954 {
1955 VFS_FIND(getwd);
1956 return handle->fns->getwd_fn(handle, ctx);
1957 }
1958
1959 int smb_vfs_call_fntimes(struct vfs_handle_struct *handle,
1960 struct files_struct *fsp,
1961 struct smb_file_time *ft)
1962 {
1963 VFS_FIND(fntimes);
1964 return handle->fns->fntimes_fn(handle, fsp, ft);
1965 }
1966
1967 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
1968 struct files_struct *fsp, off_t offset)
1969 {
1970 VFS_FIND(ftruncate);
1971 return handle->fns->ftruncate_fn(handle, fsp, offset);
1972 }
1973
1974 int smb_vfs_call_fallocate(struct vfs_handle_struct *handle,
1975 struct files_struct *fsp,
1976 uint32_t mode,
1977 off_t offset,
1978 off_t len)
1979 {
1980 VFS_FIND(fallocate);
1981 return handle->fns->fallocate_fn(handle, fsp, mode, offset, len);
1982 }
1983
1984 int smb_vfs_call_filesystem_sharemode(struct vfs_handle_struct *handle,
1985 struct files_struct *fsp,
1986 uint32_t share_mode,
1987 uint32_t access_mask)
1988 {
1989 VFS_FIND(filesystem_sharemode);
1990 return handle->fns->filesystem_sharemode_fn(handle,
1991 fsp,
1992 share_mode,
1993 access_mask);
1994 }
1995
1996 int smb_vfs_call_fcntl(struct vfs_handle_struct *handle,
1997 struct files_struct *fsp, int cmd, ...)
1998 {
1999 int result;
2000 va_list cmd_arg;
2001
2002 VFS_FIND(fcntl);
2003
2004 va_start(cmd_arg, cmd);
2005 result = handle->fns->fcntl_fn(handle, fsp, cmd, cmd_arg);
2006 va_end(cmd_arg);
2007
2008 return result;
2009 }
2010
2011 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
2012 struct files_struct *fsp, int leasetype)
2013 {
2014 VFS_FIND(linux_setlease);
2015 return handle->fns->linux_setlease_fn(handle, fsp, leasetype);
2016 }
2017
2018 int smb_vfs_call_symlinkat(struct vfs_handle_struct *handle,
2019 const struct smb_filename *link_target,
2020 struct files_struct *dirfsp,
2021 const struct smb_filename *new_smb_fname)
2022 {
2023 VFS_FIND(symlinkat);
2024 return handle->fns->symlinkat_fn(handle,
2025 link_target,
2026 dirfsp,
2027 new_smb_fname);
2028 }
2029
2030 int smb_vfs_call_readlinkat(struct vfs_handle_struct *handle,
2031 const struct files_struct *dirfsp,
2032 const struct smb_filename *smb_fname,
2033 char *buf,
2034 size_t bufsiz)
2035 {
2036 VFS_FIND(readlinkat);
2037 return handle->fns->readlinkat_fn(handle,
2038 dirfsp,
2039 smb_fname,
2040 buf,
2041 bufsiz);
2042 }
2043
2044 int smb_vfs_call_linkat(struct vfs_handle_struct *handle,
2045 struct files_struct *srcfsp,
2046 const struct smb_filename *old_smb_fname,
2047 struct files_struct *dstfsp,
2048 const struct smb_filename *new_smb_fname,
2049 int flags)
2050 {
2051 VFS_FIND(linkat);
2052 return handle->fns->linkat_fn(handle,
2053 srcfsp,
2054 old_smb_fname,
2055 dstfsp,
2056 new_smb_fname,
2057 flags);
2058 }
2059
2060 int smb_vfs_call_mknodat(struct vfs_handle_struct *handle,
2061 struct files_struct *dirfsp,
2062 const struct smb_filename *smb_fname,
2063 mode_t mode,
2064 SMB_DEV_T dev)
2065 {
2066 VFS_FIND(mknodat);
2067 return handle->fns->mknodat_fn(handle,
2068 dirfsp,
2069 smb_fname,
2070 mode,
2071 dev);
2072 }
2073
2074 struct smb_filename *smb_vfs_call_realpath(struct vfs_handle_struct *handle,
2075 TALLOC_CTX *ctx,
2076 const struct smb_filename *smb_fname)
2077 {
2078 VFS_FIND(realpath);
2079 return handle->fns->realpath_fn(handle, ctx, smb_fname);
2080 }
2081
2082 int smb_vfs_call_fchflags(struct vfs_handle_struct *handle,
2083 struct files_struct *fsp,
2084 unsigned int flags)
2085 {
2086 VFS_FIND(fchflags);
2087 return handle->fns->fchflags_fn(handle, fsp, flags);
2088 }
2089
2090 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
2091 const SMB_STRUCT_STAT *sbuf)
2092 {
2093 VFS_FIND(file_id_create);
2094 return handle->fns->file_id_create_fn(handle, sbuf);
2095 }
2096
2097 uint64_t smb_vfs_call_fs_file_id(struct vfs_handle_struct *handle,
2098 const SMB_STRUCT_STAT *sbuf)
2099 {
2100 VFS_FIND(fs_file_id);
2101 return handle->fns->fs_file_id_fn(handle, sbuf);
2102 }
2103
2104 NTSTATUS smb_vfs_call_fstreaminfo(struct vfs_handle_struct *handle,
2105 struct files_struct *fsp,
2106 TALLOC_CTX *mem_ctx,
2107 unsigned int *num_streams,
2108 struct stream_struct **streams)
2109 {
2110 VFS_FIND(fstreaminfo);
2111 return handle->fns->fstreaminfo_fn(handle, fsp, mem_ctx,
2112 num_streams, streams);
2113 }
2114
2115 NTSTATUS smb_vfs_call_get_real_filename_at(struct vfs_handle_struct *handle,
2116 struct files_struct *dirfsp,
2117 const char *name,
2118 TALLOC_CTX *mem_ctx,
2119 char **found_name)
2120 {
2121 VFS_FIND(get_real_filename_at);
2122 return handle->fns->get_real_filename_at_fn(
2123 handle, dirfsp, name, mem_ctx, found_name);
2124 }
2125
2126 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
2127 const struct files_struct *dirfsp,
2128 const struct smb_filename *smb_fname)
2129 {
2130 VFS_FIND(connectpath);
2131 return handle->fns->connectpath_fn(handle, dirfsp, smb_fname);
2132 }
2133
2134 bool smb_vfs_call_strict_lock_check(struct vfs_handle_struct *handle,
2135 struct files_struct *fsp,
2136 struct lock_struct *plock)
2137 {
2138 VFS_FIND(strict_lock_check);
2139 return handle->fns->strict_lock_check_fn(handle, fsp, plock);
2140 }
2141
2142 NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
2143 const char *name,
2144 enum vfs_translate_direction direction,
2145 TALLOC_CTX *mem_ctx,
2146 char **mapped_name)
2147 {
2148 VFS_FIND(translate_name);
2149 return handle->fns->translate_name_fn(handle, name, direction, mem_ctx,
2150 mapped_name);
2151 }
2152
2153 NTSTATUS smb_vfs_call_parent_pathname(struct vfs_handle_struct *handle,
2154 TALLOC_CTX *mem_ctx,
2155 const struct smb_filename *smb_fname_in,
2156 struct smb_filename **parent_dir_out,
2157 struct smb_filename **atname_out)
2158 {
2159 VFS_FIND(parent_pathname);
2160 return handle->fns->parent_pathname_fn(handle,
2161 mem_ctx,
2162 smb_fname_in,
2163 parent_dir_out,
2164 atname_out);
2165 }
2166
2167 NTSTATUS smb_vfs_call_fsctl(struct vfs_handle_struct *handle,
2168 struct files_struct *fsp,
2169 TALLOC_CTX *ctx,
2170 uint32_t function,
2171 uint16_t req_flags,
2172 const uint8_t *in_data,
2173 uint32_t in_len,
2174 uint8_t **out_data,
2175 uint32_t max_out_len,
2176 uint32_t *out_len)
2177 {
2178 VFS_FIND(fsctl);
2179 return handle->fns->fsctl_fn(handle, fsp, ctx, function, req_flags,
2180 in_data, in_len, out_data, max_out_len,
2181 out_len);
2182 }
2183
2184 NTSTATUS smb_vfs_call_fget_dos_attributes(struct vfs_handle_struct *handle,
2185 struct files_struct *fsp,
2186 uint32_t *dosmode)
2187 {
2188 VFS_FIND(fget_dos_attributes);
2189 return handle->fns->fget_dos_attributes_fn(handle, fsp, dosmode);
2190 }
2191
2192 NTSTATUS smb_vfs_call_fset_dos_attributes(struct vfs_handle_struct *handle,
2193 struct files_struct *fsp,
2194 uint32_t dosmode)
2195 {
2196 VFS_FIND(fset_dos_attributes);
2197 return handle->fns->fset_dos_attributes_fn(handle, fsp, dosmode);
2198 }
2199
2200 struct tevent_req *smb_vfs_call_offload_read_send(TALLOC_CTX *mem_ctx,
2201 struct tevent_context *ev,
2202 struct vfs_handle_struct *handle,
2203 struct files_struct *fsp,
2204 uint32_t fsctl,
2205 uint32_t ttl,
2206 off_t offset,
2207 size_t to_copy)
2208 {
2209 VFS_FIND(offload_read_send);
2210 return handle->fns->offload_read_send_fn(mem_ctx, ev, handle,
2211 fsp, fsctl,
2212 ttl, offset, to_copy);
2213 }
2214
2215 NTSTATUS smb_vfs_call_offload_read_recv(struct tevent_req *req,
2216 struct vfs_handle_struct *handle,
2217 TALLOC_CTX *mem_ctx,
2218 uint32_t *flags,
2219 uint64_t *xferlen,
2220 DATA_BLOB *token_blob)
2221 {
2222 VFS_FIND(offload_read_recv);
2223 return handle->fns->offload_read_recv_fn(req, handle, mem_ctx, flags, xferlen, token_blob);
2224 }
2225
2226 struct tevent_req *smb_vfs_call_offload_write_send(struct vfs_handle_struct *handle,
2227 TALLOC_CTX *mem_ctx,
2228 struct tevent_context *ev,
2229 uint32_t fsctl,
2230 DATA_BLOB *token,
2231 off_t transfer_offset,
2232 struct files_struct *dest_fsp,
2233 off_t dest_off,
2234 off_t num)
2235 {
2236 VFS_FIND(offload_write_send);
2237 return handle->fns->offload_write_send_fn(handle, mem_ctx, ev, fsctl,
2238 token, transfer_offset,
2239 dest_fsp, dest_off, num);
2240 }
2241
2242 NTSTATUS smb_vfs_call_offload_write_recv(struct vfs_handle_struct *handle,
2243 struct tevent_req *req,
2244 off_t *copied)
2245 {
2246 VFS_FIND(offload_write_recv);
2247 return handle->fns->offload_write_recv_fn(handle, req, copied);
2248 }
2249
2250 struct smb_vfs_call_get_dos_attributes_state {
2251 files_struct *dir_fsp;
2252 NTSTATUS (*recv_fn)(struct tevent_req *req,
2253 struct vfs_aio_state *aio_state,
2254 uint32_t *dosmode);
2255 struct vfs_aio_state aio_state;
2256 uint32_t dos_attributes;
2257 };
2258
2259 static void smb_vfs_call_get_dos_attributes_done(struct tevent_req *subreq);
2260
2261 struct tevent_req *smb_vfs_call_get_dos_attributes_send(
2262 TALLOC_CTX *mem_ctx,
2263 struct tevent_context *ev,
2264 struct vfs_handle_struct *handle,
2265 files_struct *dir_fsp,
2266 struct smb_filename *smb_fname)
2267 {
2268 struct tevent_req *req = NULL;
2269 struct smb_vfs_call_get_dos_attributes_state *state = NULL;
2270 struct tevent_req *subreq = NULL;
2271
2272 req = tevent_req_create(mem_ctx, &state,
2273 struct smb_vfs_call_get_dos_attributes_state);
2274 if (req == NULL) {
2275 return NULL;
2276 }
2277
2278 VFS_FIND(get_dos_attributes_send);
2279
2280 *state = (struct smb_vfs_call_get_dos_attributes_state) {
2281 .dir_fsp = dir_fsp,
2282 .recv_fn = handle->fns->get_dos_attributes_recv_fn,
2283 };
2284
2285 subreq = handle->fns->get_dos_attributes_send_fn(mem_ctx,
2286 ev,
2287 handle,
2288 dir_fsp,
2289 smb_fname);
2290 if (tevent_req_nomem(subreq, req)) {
2291 return tevent_req_post(req, ev);
2292 }
2293 tevent_req_defer_callback(req, ev);
2294
2295 tevent_req_set_callback(subreq,
2296 smb_vfs_call_get_dos_attributes_done,
2297 req);
2298
2299 return req;
2300 }
2301
2302 static void smb_vfs_call_get_dos_attributes_done(struct tevent_req *subreq)
2303 {
2304 struct tevent_req *req =
2305 tevent_req_callback_data(subreq,
2306 struct tevent_req);
2307 struct smb_vfs_call_get_dos_attributes_state *state =
2308 tevent_req_data(req,
2309 struct smb_vfs_call_get_dos_attributes_state);
2310 NTSTATUS status;
2311 bool ok;
2312
2313 /*
2314 * Make sure we run as the user again
2315 */
2316 ok = change_to_user_and_service_by_fsp(state->dir_fsp);
2317 SMB_ASSERT(ok);
2318
2319 status = state->recv_fn(subreq,
2320 &state->aio_state,
2321 &state->dos_attributes);
2322 TALLOC_FREE(subreq);
2323 if (tevent_req_nterror(req, status)) {
2324 return;
2325 }
2326
2327 tevent_req_done(req);
2328 }
2329
2330 NTSTATUS smb_vfs_call_get_dos_attributes_recv(
2331 struct tevent_req *req,
2332 struct vfs_aio_state *aio_state,
2333 uint32_t *dos_attributes)
2334 {
2335 struct smb_vfs_call_get_dos_attributes_state *state =
2336 tevent_req_data(req,
2337 struct smb_vfs_call_get_dos_attributes_state);
2338 NTSTATUS status;
2339
2340 if (tevent_req_is_nterror(req, &status)) {
2341 tevent_req_received(req);
2342 return status;
2343 }
2344
2345 *aio_state = state->aio_state;
2346 *dos_attributes = state->dos_attributes;
2347 tevent_req_received(req);
2348 return NT_STATUS_OK;
2349 }
2350
2351 NTSTATUS smb_vfs_call_fget_compression(vfs_handle_struct *handle,
2352 TALLOC_CTX *mem_ctx,
2353 struct files_struct *fsp,
2354 uint16_t *_compression_fmt)
2355 {
2356 VFS_FIND(fget_compression);
2357 return handle->fns->fget_compression_fn(handle, mem_ctx, fsp,
2358 _compression_fmt);
2359 }
2360
2361 NTSTATUS smb_vfs_call_set_compression(vfs_handle_struct *handle,
2362 TALLOC_CTX *mem_ctx,
2363 struct files_struct *fsp,
2364 uint16_t compression_fmt)
2365 {
2366 VFS_FIND(set_compression);
2367 return handle->fns->set_compression_fn(handle, mem_ctx, fsp,
2368 compression_fmt);
2369 }
2370
2371 NTSTATUS smb_vfs_call_snap_check_path(vfs_handle_struct *handle,
2372 TALLOC_CTX *mem_ctx,
2373 const char *service_path,
2374 char **base_volume)
2375 {
2376 VFS_FIND(snap_check_path);
2377 return handle->fns->snap_check_path_fn(handle, mem_ctx, service_path,
2378 base_volume);
2379 }
2380
2381 NTSTATUS smb_vfs_call_snap_create(struct vfs_handle_struct *handle,
2382 TALLOC_CTX *mem_ctx,
2383 const char *base_volume,
2384 time_t *tstamp,
2385 bool rw,
2386 char **base_path,
2387 char **snap_path)
2388 {
2389 VFS_FIND(snap_create);
2390 return handle->fns->snap_create_fn(handle, mem_ctx, base_volume, tstamp,
2391 rw, base_path, snap_path);
2392 }
2393
2394 NTSTATUS smb_vfs_call_snap_delete(struct vfs_handle_struct *handle,
2395 TALLOC_CTX *mem_ctx,
2396 char *base_path,
2397 char *snap_path)
2398 {
2399 VFS_FIND(snap_delete);
2400 return handle->fns->snap_delete_fn(handle, mem_ctx, base_path,
2401 snap_path);
2402 }
2403
2404 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
2405 struct files_struct *fsp,
2406 uint32_t security_info,
2407 TALLOC_CTX *mem_ctx,
2408 struct security_descriptor **ppdesc)
2409 {
2410 VFS_FIND(fget_nt_acl);
2411 return handle->fns->fget_nt_acl_fn(handle, fsp, security_info,
2412 mem_ctx, ppdesc);
2413 }
2414
2415 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
2416 struct files_struct *fsp,
2417 uint32_t security_info_sent,
2418 const struct security_descriptor *psd)
2419 {
2420 VFS_FIND(fset_nt_acl);
2421 return handle->fns->fset_nt_acl_fn(handle, fsp, security_info_sent,
2422 psd);
2423 }
2424
2425 NTSTATUS smb_vfs_call_audit_file(struct vfs_handle_struct *handle,
2426 struct smb_filename *file,
2427 struct security_acl *sacl,
2428 uint32_t access_requested,
2429 uint32_t access_denied)
2430 {
2431 VFS_FIND(audit_file);
2432 return handle->fns->audit_file_fn(handle,
2433 file,
2434 sacl,
2435 access_requested,
2436 access_denied);
2437 }
2438
2439 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
2440 struct files_struct *fsp,
2441 SMB_ACL_TYPE_T type,
2442 TALLOC_CTX *mem_ctx)
2443 {
2444 VFS_FIND(sys_acl_get_fd);
2445 return handle->fns->sys_acl_get_fd_fn(handle, fsp, type, mem_ctx);
2446 }
2447
2448 int smb_vfs_call_sys_acl_blob_get_fd(struct vfs_handle_struct *handle,
2449 struct files_struct *fsp,
2450 TALLOC_CTX *mem_ctx,
2451 char **blob_description,
2452 DATA_BLOB *blob)
2453 {
2454 VFS_FIND(sys_acl_blob_get_fd);
2455 return handle->fns->sys_acl_blob_get_fd_fn(handle, fsp, mem_ctx, blob_description, blob);
2456 }
2457
2458 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
2459 struct files_struct *fsp,
2460 SMB_ACL_TYPE_T type,
2461 SMB_ACL_T theacl)
2462 {
2463 VFS_FIND(sys_acl_set_fd);
2464 return handle->fns->sys_acl_set_fd_fn(handle, fsp, type, theacl);
2465 }
2466
2467 int smb_vfs_call_sys_acl_delete_def_fd(struct vfs_handle_struct *handle,
2468 struct files_struct *fsp)
2469 {
2470 VFS_FIND(sys_acl_delete_def_fd);
2471 return handle->fns->sys_acl_delete_def_fd_fn(handle, fsp);
2472 }
2473
2474 struct smb_vfs_call_getxattrat_state {
2475 files_struct *dir_fsp;
2476 ssize_t (*recv_fn)(struct tevent_req *req,
2477 struct vfs_aio_state *aio_state,
2478 TALLOC_CTX *mem_ctx,
2479 uint8_t **xattr_value);
2480 ssize_t retval;
2481 uint8_t *xattr_value;
2482 struct vfs_aio_state aio_state;
2483 };
2484
2485 static void smb_vfs_call_getxattrat_done(struct tevent_req *subreq);
2486
2487 struct tevent_req *smb_vfs_call_getxattrat_send(
2488 TALLOC_CTX *mem_ctx,
2489 struct tevent_context *ev,
2490 struct vfs_handle_struct *handle,
2491 files_struct *dir_fsp,
2492 const struct smb_filename *smb_fname,
2493 const char *xattr_name,
2494 size_t alloc_hint)
2495 {
2496 struct tevent_req *req = NULL;
2497 struct smb_vfs_call_getxattrat_state *state = NULL;
2498 struct tevent_req *subreq = NULL;
2499
2500 req = tevent_req_create(mem_ctx, &state,
2501 struct smb_vfs_call_getxattrat_state);
2502 if (req == NULL) {
2503 return NULL;
2504 }
2505
2506 VFS_FIND(getxattrat_send);
2507
2508 *state = (struct smb_vfs_call_getxattrat_state) {
2509 .dir_fsp = dir_fsp,
2510 .recv_fn = handle->fns->getxattrat_recv_fn,
2511 };
2512
2513 subreq = handle->fns->getxattrat_send_fn(mem_ctx,
2514 ev,
2515 handle,
2516 dir_fsp,
2517 smb_fname,
2518 xattr_name,
2519 alloc_hint);
2520 if (tevent_req_nomem(subreq, req)) {
2521 return tevent_req_post(req, ev);
2522 }
2523 tevent_req_defer_callback(req, ev);
2524
2525 tevent_req_set_callback(subreq, smb_vfs_call_getxattrat_done, req);
2526 return req;
2527 }
2528
2529 static void smb_vfs_call_getxattrat_done(struct tevent_req *subreq)
2530 {
2531 struct tevent_req *req = tevent_req_callback_data(
2532 subreq, struct tevent_req);
2533 struct smb_vfs_call_getxattrat_state *state = tevent_req_data(
2534 req, struct smb_vfs_call_getxattrat_state);
2535 bool ok;
2536
2537 /*
2538 * Make sure we run as the user again
2539 */
2540 ok = change_to_user_and_service_by_fsp(state->dir_fsp);
2541 SMB_ASSERT(ok);
2542
2543 state->retval = state->recv_fn(subreq,
2544 &state->aio_state,
2545 state,
2546 &state->xattr_value);
2547 TALLOC_FREE(subreq);
2548 if (state->retval == -1) {
2549 tevent_req_error(req, state->aio_state.error);
2550 return;
2551 }
2552
2553 tevent_req_done(req);
2554 }
2555
2556 ssize_t smb_vfs_call_getxattrat_recv(struct tevent_req *req,
2557 struct vfs_aio_state *aio_state,
2558 TALLOC_CTX *mem_ctx,
2559 uint8_t **xattr_value)
2560 {
2561 struct smb_vfs_call_getxattrat_state *state = tevent_req_data(
2562 req, struct smb_vfs_call_getxattrat_state);
2563 size_t xattr_size;
2564
2565 if (tevent_req_is_unix_error(req, &aio_state->error)) {
2566 tevent_req_received(req);
2567 return -1;
2568 }
2569
2570 *aio_state = state->aio_state;
2571 xattr_size = state->retval;
2572 if (xattr_value != NULL) {
2573 *xattr_value = talloc_move(mem_ctx, &state->xattr_value);
2574 }
2575
2576 tevent_req_received(req);
2577 return xattr_size;
2578 }
2579
2580 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
2581 struct files_struct *fsp, const char *name,
2582 void *value, size_t size)
2583 {
2584 VFS_FIND(fgetxattr);
2585 return handle->fns->fgetxattr_fn(handle, fsp, name, value, size);
2586 }
2587
2588 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
2589 struct files_struct *fsp, char *list,
2590 size_t size)
2591 {
2592 VFS_FIND(flistxattr);
2593 return handle->fns->flistxattr_fn(handle, fsp, list, size);
2594 }
2595
2596 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
2597 struct files_struct *fsp, const char *name)
2598 {
2599 VFS_FIND(fremovexattr);
2600 return handle->fns->fremovexattr_fn(handle, fsp, name);
2601 }
2602
2603 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
2604 struct files_struct *fsp, const char *name,
2605 const void *value, size_t size, int flags)
2606 {
2607 VFS_FIND(fsetxattr);
2608 return handle->fns->fsetxattr_fn(handle, fsp, name, value, size, flags);
2609 }
2610
2611 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
2612 struct files_struct *fsp)
2613 {
2614 VFS_FIND(aio_force);
2615 return handle->fns->aio_force_fn(handle, fsp);
2616 }
2617
2618 NTSTATUS smb_vfs_call_durable_cookie(struct vfs_handle_struct *handle,
2619 struct files_struct *fsp,
2620 TALLOC_CTX *mem_ctx,
2621 DATA_BLOB *cookie)
2622 {
2623 VFS_FIND(durable_cookie);
2624 return handle->fns->durable_cookie_fn(handle, fsp, mem_ctx, cookie);
2625 }
2626
2627 NTSTATUS smb_vfs_call_durable_disconnect(struct vfs_handle_struct *handle,
2628 struct files_struct *fsp,
2629 const DATA_BLOB old_cookie,
2630 TALLOC_CTX *mem_ctx,
2631 DATA_BLOB *new_cookie)
2632 {
2633 VFS_FIND(durable_disconnect);
2634 return handle->fns->durable_disconnect_fn(handle, fsp, old_cookie,
2635 mem_ctx, new_cookie);
2636 }
2637
2638 NTSTATUS smb_vfs_call_durable_reconnect(struct vfs_handle_struct *handle,
2639 struct smb_request *smb1req,
2640 struct smbXsrv_open *op,
2641 const DATA_BLOB old_cookie,
2642 TALLOC_CTX *mem_ctx,
2643 struct files_struct **fsp,
2644 DATA_BLOB *new_cookie)
2645 {
2646 VFS_FIND(durable_reconnect);
2647 return handle->fns->durable_reconnect_fn(handle, smb1req, op,
2648 old_cookie, mem_ctx, fsp,
2649 new_cookie);
2650 }
2651
2652 NTSTATUS smb_vfs_call_freaddir_attr(struct vfs_handle_struct *handle,
2653 struct files_struct *fsp,
2654 TALLOC_CTX *mem_ctx,
2655 struct readdir_attr_data **attr_data)
2656 {
2657 VFS_FIND(freaddir_attr);
2658 return handle->fns->freaddir_attr_fn(handle,
2659 fsp,
2660 mem_ctx,
2661 attr_data);
2662 }
2663
2664 bool smb_vfs_call_lock(struct vfs_handle_struct *handle,
2665 struct files_struct *fsp, int op, off_t offset,
2666 off_t count, int type)
2667 {
2668 VFS_FIND(lock);
2669 return handle->fns->lock_fn(handle, fsp, op, offset, count, type);
2670 }
2671
2672 bool smb_vfs_call_getlock(struct vfs_handle_struct *handle,
2673 struct files_struct *fsp, off_t *poffset,
2674 off_t *pcount, int *ptype, pid_t *ppid)
2675 {
2676 VFS_FIND(getlock);
2677 return handle->fns->getlock_fn(handle, fsp, poffset, pcount, ptype,
2678 ppid);
2679 }
2680
2681 NTSTATUS smb_vfs_call_brl_lock_windows(struct vfs_handle_struct *handle,
2682 struct byte_range_lock *br_lck,
2683 struct lock_struct *plock)
2684 {
2685 VFS_FIND(brl_lock_windows);
2686 return handle->fns->brl_lock_windows_fn(handle, br_lck, plock);
2687 }
2688
2689 bool smb_vfs_call_brl_unlock_windows(struct vfs_handle_struct *handle,
2690 struct byte_range_lock *br_lck,
2691 const struct lock_struct *plock)
2692 {
2693 VFS_FIND(brl_unlock_windows);
2694 return handle->fns->brl_unlock_windows_fn(handle, br_lck, plock);
2695 }
Samba GIT mirror