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Fix one more warning introduced by changing the size of UNIX_USER_TOKEN->ngroups...
[Samba.git] / source3 / smbd / vfs.c
blob40aaf6bb742d55215001691310b9b902e39cea82
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 "smbd/globals.h"
28 #include "memcache.h"
29
30 #undef DBGC_CLASS
31 #define DBGC_CLASS DBGC_VFS
32
33 static_decl_vfs;
34
35 struct vfs_init_function_entry {
36 char *name;
37 struct vfs_init_function_entry *prev, *next;
38 const struct vfs_fn_pointers *fns;
39 };
40
41 /****************************************************************************
42 maintain the list of available backends
43 ****************************************************************************/
44
45 static struct vfs_init_function_entry *vfs_find_backend_entry(const char *name)
46 {
47 struct vfs_init_function_entry *entry = backends;
48
49 DEBUG(10, ("vfs_find_backend_entry called for %s\n", name));
50
51 while(entry) {
52 if (strcmp(entry->name, name)==0) return entry;
53 entry = entry->next;
54 }
55
56 return NULL;
57 }
58
59 NTSTATUS smb_register_vfs(int version, const char *name,
60 const struct vfs_fn_pointers *fns)
61 {
62 struct vfs_init_function_entry *entry = backends;
63
64 if ((version != SMB_VFS_INTERFACE_VERSION)) {
65 DEBUG(0, ("Failed to register vfs module.\n"
66 "The module was compiled against SMB_VFS_INTERFACE_VERSION %d,\n"
67 "current SMB_VFS_INTERFACE_VERSION is %d.\n"
68 "Please recompile against the current Samba Version!\n",
69 version, SMB_VFS_INTERFACE_VERSION));
70 return NT_STATUS_OBJECT_TYPE_MISMATCH;
71 }
72
73 if (!name || !name[0]) {
74 DEBUG(0,("smb_register_vfs() called with NULL pointer or empty name!\n"));
75 return NT_STATUS_INVALID_PARAMETER;
76 }
77
78 if (vfs_find_backend_entry(name)) {
79 DEBUG(0,("VFS module %s already loaded!\n", name));
80 return NT_STATUS_OBJECT_NAME_COLLISION;
81 }
82
83 entry = SMB_XMALLOC_P(struct vfs_init_function_entry);
84 entry->name = smb_xstrdup(name);
85 entry->fns = fns;
86
87 DLIST_ADD(backends, entry);
88 DEBUG(5, ("Successfully added vfs backend '%s'\n", name));
89 return NT_STATUS_OK;
90 }
91
92 /****************************************************************************
93 initialise default vfs hooks
94 ****************************************************************************/
95
96 static void vfs_init_default(connection_struct *conn)
97 {
98 DEBUG(3, ("Initialising default vfs hooks\n"));
99 vfs_init_custom(conn, DEFAULT_VFS_MODULE_NAME);
100 }
101
102 /****************************************************************************
103 initialise custom vfs hooks
104 ****************************************************************************/
105
106 bool vfs_init_custom(connection_struct *conn, const char *vfs_object)
107 {
108 char *module_path = NULL;
109 char *module_name = NULL;
110 char *module_param = NULL, *p;
111 vfs_handle_struct *handle;
112 const struct vfs_init_function_entry *entry;
113
114 if (!conn||!vfs_object||!vfs_object[0]) {
115 DEBUG(0, ("vfs_init_custom() called with NULL pointer or "
116 "empty vfs_object!\n"));
117 return False;
118 }
119
120 if(!backends) {
121 static_init_vfs;
122 }
123
124 DEBUG(3, ("Initialising custom vfs hooks from [%s]\n", vfs_object));
125
126 module_path = smb_xstrdup(vfs_object);
127
128 p = strchr_m(module_path, ':');
129
130 if (p) {
131 *p = 0;
132 module_param = p+1;
133 trim_char(module_param, ' ', ' ');
134 }
135
136 trim_char(module_path, ' ', ' ');
137
138 module_name = smb_xstrdup(module_path);
139
140 if ((module_name[0] == '/') &&
141 (strcmp(module_path, DEFAULT_VFS_MODULE_NAME) != 0)) {
142
143 /*
144 * Extract the module name from the path. Just use the base
145 * name of the last path component.
146 */
147
148 SAFE_FREE(module_name);
149 module_name = smb_xstrdup(strrchr_m(module_path, '/')+1);
150
151 p = strchr_m(module_name, '.');
152
153 if (p != NULL) {
154 *p = '\0';
155 }
156 }
157
158 /* First, try to load the module with the new module system */
159 entry = vfs_find_backend_entry(module_name);
160 if (!entry) {
161 NTSTATUS status;
162
163 DEBUG(5, ("vfs module [%s] not loaded - trying to load...\n",
164 vfs_object));
165
166 status = smb_probe_module("vfs", module_path);
167 if (!NT_STATUS_IS_OK(status)) {
168 DEBUG(0, ("error probing vfs module '%s': %s\n",
169 module_path, nt_errstr(status)));
170 goto fail;
171 }
172
173 entry = vfs_find_backend_entry(module_name);
174 if (!entry) {
175 DEBUG(0,("Can't find a vfs module [%s]\n",vfs_object));
176 goto fail;
177 }
178 }
179
180 DEBUGADD(5,("Successfully loaded vfs module [%s] with the new modules system\n", vfs_object));
181
182 handle = TALLOC_ZERO_P(conn, vfs_handle_struct);
183 if (!handle) {
184 DEBUG(0,("TALLOC_ZERO() failed!\n"));
185 goto fail;
186 }
187 handle->conn = conn;
188 handle->fns = entry->fns;
189 if (module_param) {
190 handle->param = talloc_strdup(conn, module_param);
191 }
192 DLIST_ADD(conn->vfs_handles, handle);
193
194 SAFE_FREE(module_path);
195 SAFE_FREE(module_name);
196 return True;
197
198 fail:
199 SAFE_FREE(module_path);
200 SAFE_FREE(module_name);
201 return False;
202 }
203
204 /*****************************************************************
205 Allow VFS modules to extend files_struct with VFS-specific state.
206 This will be ok for small numbers of extensions, but might need to
207 be refactored if it becomes more widely used.
208 ******************************************************************/
209
210 #define EXT_DATA_AREA(e) ((uint8 *)(e) + sizeof(struct vfs_fsp_data))
211
212 void *vfs_add_fsp_extension_notype(vfs_handle_struct *handle,
213 files_struct *fsp, size_t ext_size,
214 void (*destroy_fn)(void *p_data))
215 {
216 struct vfs_fsp_data *ext;
217 void * ext_data;
218
219 /* Prevent VFS modules adding multiple extensions. */
220 if ((ext_data = vfs_fetch_fsp_extension(handle, fsp))) {
221 return ext_data;
222 }
223
224 ext = (struct vfs_fsp_data *)TALLOC_ZERO(
225 handle->conn, sizeof(struct vfs_fsp_data) + ext_size);
226 if (ext == NULL) {
227 return NULL;
228 }
229
230 ext->owner = handle;
231 ext->next = fsp->vfs_extension;
232 ext->destroy = destroy_fn;
233 fsp->vfs_extension = ext;
234 return EXT_DATA_AREA(ext);
235 }
236
237 void vfs_remove_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
238 {
239 struct vfs_fsp_data *curr;
240 struct vfs_fsp_data *prev;
241
242 for (curr = fsp->vfs_extension, prev = NULL;
243 curr;
244 prev = curr, curr = curr->next) {
245 if (curr->owner == handle) {
246 if (prev) {
247 prev->next = curr->next;
248 } else {
249 fsp->vfs_extension = curr->next;
250 }
251 if (curr->destroy) {
252 curr->destroy(EXT_DATA_AREA(curr));
253 }
254 TALLOC_FREE(curr);
255 return;
256 }
257 }
258 }
259
260 void *vfs_memctx_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
261 {
262 struct vfs_fsp_data *head;
263
264 for (head = fsp->vfs_extension; head; head = head->next) {
265 if (head->owner == handle) {
266 return head;
267 }
268 }
269
270 return NULL;
271 }
272
273 void *vfs_fetch_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
274 {
275 struct vfs_fsp_data *head;
276
277 head = (struct vfs_fsp_data *)vfs_memctx_fsp_extension(handle, fsp);
278 if (head != NULL) {
279 return EXT_DATA_AREA(head);
280 }
281
282 return NULL;
283 }
284
285 #undef EXT_DATA_AREA
286
287 /*****************************************************************
288 Generic VFS init.
289 ******************************************************************/
290
291 bool smbd_vfs_init(connection_struct *conn)
292 {
293 const char **vfs_objects;
294 unsigned int i = 0;
295 int j = 0;
296
297 /* Normal share - initialise with disk access functions */
298 vfs_init_default(conn);
299 vfs_objects = lp_vfs_objects(SNUM(conn));
300
301 /* Override VFS functions if 'vfs object' was not specified*/
302 if (!vfs_objects || !vfs_objects[0])
303 return True;
304
305 for (i=0; vfs_objects[i] ;) {
306 i++;
307 }
308
309 for (j=i-1; j >= 0; j--) {
310 if (!vfs_init_custom(conn, vfs_objects[j])) {
311 DEBUG(0, ("smbd_vfs_init: vfs_init_custom failed for %s\n", vfs_objects[j]));
312 return False;
313 }
314 }
315 return True;
316 }
317
318 /*******************************************************************
319 Check if a file exists in the vfs.
320 ********************************************************************/
321
322 NTSTATUS vfs_file_exist(connection_struct *conn, struct smb_filename *smb_fname)
323 {
324 /* Only return OK if stat was successful and S_ISREG */
325 if ((SMB_VFS_STAT(conn, smb_fname) != -1) &&
326 S_ISREG(smb_fname->st.st_ex_mode)) {
327 return NT_STATUS_OK;
328 }
329
330 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
331 }
332
333 /****************************************************************************
334 Read data from fsp on the vfs. (note: EINTR re-read differs from vfs_write_data)
335 ****************************************************************************/
336
337 ssize_t vfs_read_data(files_struct *fsp, char *buf, size_t byte_count)
338 {
339 size_t total=0;
340
341 while (total < byte_count)
342 {
343 ssize_t ret = SMB_VFS_READ(fsp, buf + total,
344 byte_count - total);
345
346 if (ret == 0) return total;
347 if (ret == -1) {
348 if (errno == EINTR)
349 continue;
350 else
351 return -1;
352 }
353 total += ret;
354 }
355 return (ssize_t)total;
356 }
357
358 ssize_t vfs_pread_data(files_struct *fsp, char *buf,
359 size_t byte_count, SMB_OFF_T offset)
360 {
361 size_t total=0;
362
363 while (total < byte_count)
364 {
365 ssize_t ret = SMB_VFS_PREAD(fsp, buf + total,
366 byte_count - total, offset + total);
367
368 if (ret == 0) return total;
369 if (ret == -1) {
370 if (errno == EINTR)
371 continue;
372 else
373 return -1;
374 }
375 total += ret;
376 }
377 return (ssize_t)total;
378 }
379
380 /****************************************************************************
381 Write data to a fd on the vfs.
382 ****************************************************************************/
383
384 ssize_t vfs_write_data(struct smb_request *req,
385 files_struct *fsp,
386 const char *buffer,
387 size_t N)
388 {
389 size_t total=0;
390 ssize_t ret;
391
392 if (req && req->unread_bytes) {
393 SMB_ASSERT(req->unread_bytes == N);
394 /* VFS_RECVFILE must drain the socket
395 * before returning. */
396 req->unread_bytes = 0;
397 return SMB_VFS_RECVFILE(req->sconn->sock,
398 fsp,
399 (SMB_OFF_T)-1,
400 N);
401 }
402
403 while (total < N) {
404 ret = SMB_VFS_WRITE(fsp, buffer + total, N - total);
405
406 if (ret == -1)
407 return -1;
408 if (ret == 0)
409 return total;
410
411 total += ret;
412 }
413 return (ssize_t)total;
414 }
415
416 ssize_t vfs_pwrite_data(struct smb_request *req,
417 files_struct *fsp,
418 const char *buffer,
419 size_t N,
420 SMB_OFF_T offset)
421 {
422 size_t total=0;
423 ssize_t ret;
424
425 if (req && req->unread_bytes) {
426 SMB_ASSERT(req->unread_bytes == N);
427 /* VFS_RECVFILE must drain the socket
428 * before returning. */
429 req->unread_bytes = 0;
430 return SMB_VFS_RECVFILE(req->sconn->sock,
431 fsp,
432 offset,
433 N);
434 }
435
436 while (total < N) {
437 ret = SMB_VFS_PWRITE(fsp, buffer + total, N - total,
438 offset + total);
439
440 if (ret == -1)
441 return -1;
442 if (ret == 0)
443 return total;
444
445 total += ret;
446 }
447 return (ssize_t)total;
448 }
449 /****************************************************************************
450 An allocate file space call using the vfs interface.
451 Allocates space for a file from a filedescriptor.
452 Returns 0 on success, -1 on failure.
453 ****************************************************************************/
454
455 int vfs_allocate_file_space(files_struct *fsp, uint64_t len)
456 {
457 int ret;
458 connection_struct *conn = fsp->conn;
459 uint64_t space_avail;
460 uint64_t bsize,dfree,dsize;
461 NTSTATUS status;
462
463 /*
464 * Actually try and commit the space on disk....
465 */
466
467 DEBUG(10,("vfs_allocate_file_space: file %s, len %.0f\n",
468 fsp_str_dbg(fsp), (double)len));
469
470 if (((SMB_OFF_T)len) < 0) {
471 DEBUG(0,("vfs_allocate_file_space: %s negative len "
472 "requested.\n", fsp_str_dbg(fsp)));
473 errno = EINVAL;
474 return -1;
475 }
476
477 status = vfs_stat_fsp(fsp);
478 if (!NT_STATUS_IS_OK(status)) {
479 return -1;
480 }
481
482 if (len == (uint64_t)fsp->fsp_name->st.st_ex_size)
483 return 0;
484
485 if (len < (uint64_t)fsp->fsp_name->st.st_ex_size) {
486 /* Shrink - use ftruncate. */
487
488 DEBUG(10,("vfs_allocate_file_space: file %s, shrink. Current "
489 "size %.0f\n", fsp_str_dbg(fsp),
490 (double)fsp->fsp_name->st.st_ex_size));
491
492 contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_ALLOC_SHRINK);
493
494 flush_write_cache(fsp, SIZECHANGE_FLUSH);
495 if ((ret = SMB_VFS_FTRUNCATE(fsp, (SMB_OFF_T)len)) != -1) {
496 set_filelen_write_cache(fsp, len);
497 }
498
499 contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_ALLOC_SHRINK);
500
501 return ret;
502 }
503
504 if (!lp_strict_allocate(SNUM(fsp->conn)))
505 return 0;
506
507 /* Grow - we need to test if we have enough space. */
508
509 contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_ALLOC_GROW);
510
511 /* See if we have a syscall that will allocate beyond end-of-file
512 without changing EOF. */
513 ret = SMB_VFS_FALLOCATE(fsp, VFS_FALLOCATE_KEEP_SIZE, 0, len);
514
515 contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_ALLOC_GROW);
516
517 if (ret == 0) {
518 /* We changed the allocation size on disk, but not
519 EOF - exactly as required. We're done ! */
520 return 0;
521 }
522
523 len -= fsp->fsp_name->st.st_ex_size;
524 len /= 1024; /* Len is now number of 1k blocks needed. */
525 space_avail = get_dfree_info(conn, fsp->fsp_name->base_name, false,
526 &bsize, &dfree, &dsize);
527 if (space_avail == (uint64_t)-1) {
528 return -1;
529 }
530
531 DEBUG(10,("vfs_allocate_file_space: file %s, grow. Current size %.0f, "
532 "needed blocks = %.0f, space avail = %.0f\n",
533 fsp_str_dbg(fsp), (double)fsp->fsp_name->st.st_ex_size, (double)len,
534 (double)space_avail));
535
536 if (len > space_avail) {
537 errno = ENOSPC;
538 return -1;
539 }
540
541 return 0;
542 }
543
544 /****************************************************************************
545 A vfs set_filelen call.
546 set the length of a file from a filedescriptor.
547 Returns 0 on success, -1 on failure.
548 ****************************************************************************/
549
550 int vfs_set_filelen(files_struct *fsp, SMB_OFF_T len)
551 {
552 int ret;
553
554 contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_SET_FILE_LEN);
555
556 DEBUG(10,("vfs_set_filelen: ftruncate %s to len %.0f\n",
557 fsp_str_dbg(fsp), (double)len));
558 flush_write_cache(fsp, SIZECHANGE_FLUSH);
559 if ((ret = SMB_VFS_FTRUNCATE(fsp, len)) != -1) {
560 set_filelen_write_cache(fsp, len);
561 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
562 FILE_NOTIFY_CHANGE_SIZE
563 | FILE_NOTIFY_CHANGE_ATTRIBUTES,
564 fsp->fsp_name->base_name);
565 }
566
567 contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_SET_FILE_LEN);
568
569 return ret;
570 }
571
572 /****************************************************************************
573 A slow version of fallocate. Fallback code if SMB_VFS_FALLOCATE
574 fails. Needs to be outside of the default version of SMB_VFS_FALLOCATE
575 as this is also called from the default SMB_VFS_FTRUNCATE code.
576 Always extends the file size.
577 Returns 0 on success, errno on failure.
578 ****************************************************************************/
579
580 #define SPARSE_BUF_WRITE_SIZE (32*1024)
581
582 int vfs_slow_fallocate(files_struct *fsp, SMB_OFF_T offset, SMB_OFF_T len)
583 {
584 ssize_t pwrite_ret;
585 size_t total = 0;
586
587 if (!sparse_buf) {
588 sparse_buf = SMB_CALLOC_ARRAY(char, SPARSE_BUF_WRITE_SIZE);
589 if (!sparse_buf) {
590 errno = ENOMEM;
591 return ENOMEM;
592 }
593 }
594
595 while (total < len) {
596 size_t curr_write_size = MIN(SPARSE_BUF_WRITE_SIZE, (len - total));
597
598 pwrite_ret = SMB_VFS_PWRITE(fsp, sparse_buf, curr_write_size, offset + total);
599 if (pwrite_ret == -1) {
600 DEBUG(10,("vfs_slow_fallocate: SMB_VFS_PWRITE for file "
601 "%s failed with error %s\n",
602 fsp_str_dbg(fsp), strerror(errno)));
603 return errno;
604 }
605 total += pwrite_ret;
606 }
607
608 return 0;
609 }
610
611 /****************************************************************************
612 A vfs fill sparse call.
613 Writes zeros from the end of file to len, if len is greater than EOF.
614 Used only by strict_sync.
615 Returns 0 on success, -1 on failure.
616 ****************************************************************************/
617
618 int vfs_fill_sparse(files_struct *fsp, SMB_OFF_T len)
619 {
620 int ret;
621 NTSTATUS status;
622 SMB_OFF_T offset;
623 size_t num_to_write;
624
625 status = vfs_stat_fsp(fsp);
626 if (!NT_STATUS_IS_OK(status)) {
627 return -1;
628 }
629
630 if (len <= fsp->fsp_name->st.st_ex_size) {
631 return 0;
632 }
633
634 #ifdef S_ISFIFO
635 if (S_ISFIFO(fsp->fsp_name->st.st_ex_mode)) {
636 return 0;
637 }
638 #endif
639
640 DEBUG(10,("vfs_fill_sparse: write zeros in file %s from len %.0f to "
641 "len %.0f (%.0f bytes)\n", fsp_str_dbg(fsp),
642 (double)fsp->fsp_name->st.st_ex_size, (double)len,
643 (double)(len - fsp->fsp_name->st.st_ex_size)));
644
645 contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_FILL_SPARSE);
646
647 flush_write_cache(fsp, SIZECHANGE_FLUSH);
648
649 offset = fsp->fsp_name->st.st_ex_size;
650 num_to_write = len - fsp->fsp_name->st.st_ex_size;
651
652 /* Only do this on non-stream file handles. */
653 if (fsp->base_fsp == NULL) {
654 /* for allocation try fallocate first. This can fail on some
655 * platforms e.g. when the filesystem doesn't support it and no
656 * emulation is being done by the libc (like on AIX with JFS1). In that
657 * case we do our own emulation. fallocate implementations can
658 * return ENOTSUP or EINVAL in cases like that. */
659 ret = SMB_VFS_FALLOCATE(fsp, VFS_FALLOCATE_EXTEND_SIZE,
660 offset, num_to_write);
661 if (ret == ENOSPC) {
662 errno = ENOSPC;
663 ret = -1;
664 goto out;
665 }
666 if (ret == 0) {
667 goto out;
668 }
669 DEBUG(10,("vfs_fill_sparse: SMB_VFS_FALLOCATE failed with "
670 "error %d. Falling back to slow manual allocation\n", ret));
671 }
672
673 ret = vfs_slow_fallocate(fsp, offset, num_to_write);
674 if (ret != 0) {
675 errno = ret;
676 ret = -1;
677 }
678
679 out:
680
681 if (ret == 0) {
682 set_filelen_write_cache(fsp, len);
683 }
684
685 contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_FILL_SPARSE);
686 return ret;
687 }
688
689 /****************************************************************************
690 Transfer some data (n bytes) between two file_struct's.
691 ****************************************************************************/
692
693 static ssize_t vfs_read_fn(void *file, void *buf, size_t len)
694 {
695 struct files_struct *fsp = (struct files_struct *)file;
696
697 return SMB_VFS_READ(fsp, buf, len);
698 }
699
700 static ssize_t vfs_write_fn(void *file, const void *buf, size_t len)
701 {
702 struct files_struct *fsp = (struct files_struct *)file;
703
704 return SMB_VFS_WRITE(fsp, buf, len);
705 }
706
707 SMB_OFF_T vfs_transfer_file(files_struct *in, files_struct *out, SMB_OFF_T n)
708 {
709 return transfer_file_internal((void *)in, (void *)out, n,
710 vfs_read_fn, vfs_write_fn);
711 }
712
713 /*******************************************************************
714 A vfs_readdir wrapper which just returns the file name.
715 ********************************************************************/
716
717 const char *vfs_readdirname(connection_struct *conn, void *p,
718 SMB_STRUCT_STAT *sbuf, char **talloced)
719 {
720 SMB_STRUCT_DIRENT *ptr= NULL;
721 const char *dname;
722 char *translated;
723 NTSTATUS status;
724
725 if (!p)
726 return(NULL);
727
728 ptr = SMB_VFS_READDIR(conn, (DIR *)p, sbuf);
729 if (!ptr)
730 return(NULL);
731
732 dname = ptr->d_name;
733
734
735 #ifdef NEXT2
736 if (telldir(p) < 0)
737 return(NULL);
738 #endif
739
740 #ifdef HAVE_BROKEN_READDIR_NAME
741 /* using /usr/ucb/cc is BAD */
742 dname = dname - 2;
743 #endif
744
745 status = SMB_VFS_TRANSLATE_NAME(conn, dname, vfs_translate_to_windows,
746 talloc_tos(), &translated);
747 if (NT_STATUS_EQUAL(status, NT_STATUS_NONE_MAPPED)) {
748 *talloced = NULL;
749 return dname;
750 }
751 *talloced = translated;
752 if (!NT_STATUS_IS_OK(status)) {
753 return NULL;
754 }
755 return translated;
756 }
757
758 /*******************************************************************
759 A wrapper for vfs_chdir().
760 ********************************************************************/
761
762 int vfs_ChDir(connection_struct *conn, const char *path)
763 {
764 int res;
765
766 if (!LastDir) {
767 LastDir = SMB_STRDUP("");
768 }
769
770 if (strcsequal(path,"."))
771 return(0);
772
773 if (*path == '/' && strcsequal(LastDir,path))
774 return(0);
775
776 DEBUG(4,("vfs_ChDir to %s\n",path));
777
778 res = SMB_VFS_CHDIR(conn,path);
779 if (!res) {
780 SAFE_FREE(LastDir);
781 LastDir = SMB_STRDUP(path);
782 }
783 return(res);
784 }
785
786 /*******************************************************************
787 Return the absolute current directory path - given a UNIX pathname.
788 Note that this path is returned in DOS format, not UNIX
789 format. Note this can be called with conn == NULL.
790 ********************************************************************/
791
792 char *vfs_GetWd(TALLOC_CTX *ctx, connection_struct *conn)
793 {
794 char s[PATH_MAX+1];
795 char *result = NULL;
796 DATA_BLOB cache_value;
797 struct file_id key;
798 struct smb_filename *smb_fname_dot = NULL;
799 struct smb_filename *smb_fname_full = NULL;
800 NTSTATUS status;
801
802 *s = 0;
803
804 if (!lp_getwd_cache()) {
805 goto nocache;
806 }
807
808 status = create_synthetic_smb_fname(ctx, ".", NULL, NULL,
809 &smb_fname_dot);
810 if (!NT_STATUS_IS_OK(status)) {
811 errno = map_errno_from_nt_status(status);
812 goto out;
813 }
814
815 if (SMB_VFS_STAT(conn, smb_fname_dot) == -1) {
816 /*
817 * Known to fail for root: the directory may be NFS-mounted
818 * and exported with root_squash (so has no root access).
819 */
820 DEBUG(1,("vfs_GetWd: couldn't stat \".\" error %s "
821 "(NFS problem ?)\n", strerror(errno) ));
822 goto nocache;
823 }
824
825 key = vfs_file_id_from_sbuf(conn, &smb_fname_dot->st);
826
827 if (!memcache_lookup(smbd_memcache(), GETWD_CACHE,
828 data_blob_const(&key, sizeof(key)),
829 &cache_value)) {
830 goto nocache;
831 }
832
833 SMB_ASSERT((cache_value.length > 0)
834 && (cache_value.data[cache_value.length-1] == '\0'));
835
836 status = create_synthetic_smb_fname(ctx, (char *)cache_value.data,
837 NULL, NULL, &smb_fname_full);
838 if (!NT_STATUS_IS_OK(status)) {
839 errno = map_errno_from_nt_status(status);
840 goto out;
841 }
842
843 if ((SMB_VFS_STAT(conn, smb_fname_full) == 0) &&
844 (smb_fname_dot->st.st_ex_dev == smb_fname_full->st.st_ex_dev) &&
845 (smb_fname_dot->st.st_ex_ino == smb_fname_full->st.st_ex_ino) &&
846 (S_ISDIR(smb_fname_dot->st.st_ex_mode))) {
847 /*
848 * Ok, we're done
849 */
850 result = talloc_strdup(ctx, smb_fname_full->base_name);
851 if (result == NULL) {
852 errno = ENOMEM;
853 }
854 goto out;
855 }
856
857 nocache:
858
859 /*
860 * We don't have the information to hand so rely on traditional
861 * methods. The very slow getcwd, which spawns a process on some
862 * systems, or the not quite so bad getwd.
863 */
864
865 if (!SMB_VFS_GETWD(conn,s)) {
866 DEBUG(0, ("vfs_GetWd: SMB_VFS_GETWD call failed: %s\n",
867 strerror(errno)));
868 goto out;
869 }
870
871 if (lp_getwd_cache() && VALID_STAT(smb_fname_dot->st)) {
872 key = vfs_file_id_from_sbuf(conn, &smb_fname_dot->st);
873
874 memcache_add(smbd_memcache(), GETWD_CACHE,
875 data_blob_const(&key, sizeof(key)),
876 data_blob_const(s, strlen(s)+1));
877 }
878
879 result = talloc_strdup(ctx, s);
880 if (result == NULL) {
881 errno = ENOMEM;
882 }
883
884 out:
885 TALLOC_FREE(smb_fname_dot);
886 TALLOC_FREE(smb_fname_full);
887 return result;
888 }
889
890 /*******************************************************************
891 Reduce a file name, removing .. elements and checking that
892 it is below dir in the heirachy. This uses realpath.
893 ********************************************************************/
894
895 NTSTATUS check_reduced_name(connection_struct *conn, const char *fname)
896 {
897 char *resolved_name = NULL;
898 char *p = NULL;
899
900 DEBUG(3,("check_reduced_name [%s] [%s]\n", fname, conn->connectpath));
901
902 resolved_name = SMB_VFS_REALPATH(conn,fname);
903
904 if (!resolved_name) {
905 switch (errno) {
906 case ENOTDIR:
907 DEBUG(3,("check_reduced_name: Component not a "
908 "directory in getting realpath for "
909 "%s\n", fname));
910 return NT_STATUS_OBJECT_PATH_NOT_FOUND;
911 case ENOENT:
912 {
913 TALLOC_CTX *ctx = talloc_tos();
914 char *tmp_fname = NULL;
915 char *last_component = NULL;
916 /* Last component didn't exist. Remove it and try and canonicalise the directory. */
917
918 tmp_fname = talloc_strdup(ctx, fname);
919 if (!tmp_fname) {
920 return NT_STATUS_NO_MEMORY;
921 }
922 p = strrchr_m(tmp_fname, '/');
923 if (p) {
924 *p++ = '\0';
925 last_component = p;
926 } else {
927 last_component = tmp_fname;
928 tmp_fname = talloc_strdup(ctx,
929 ".");
930 if (!tmp_fname) {
931 return NT_STATUS_NO_MEMORY;
932 }
933 }
934
935 resolved_name = SMB_VFS_REALPATH(conn,tmp_fname);
936 if (!resolved_name) {
937 NTSTATUS status = map_nt_error_from_unix(errno);
938
939 if (errno == ENOENT || errno == ENOTDIR) {
940 status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
941 }
942
943 DEBUG(3,("check_reduce_name: "
944 "couldn't get realpath for "
945 "%s (%s)\n",
946 fname,
947 nt_errstr(status)));
948 return status;
949 }
950 tmp_fname = talloc_asprintf(ctx,
951 "%s/%s",
952 resolved_name,
953 last_component);
954 if (!tmp_fname) {
955 return NT_STATUS_NO_MEMORY;
956 }
957 SAFE_FREE(resolved_name);
958 resolved_name = SMB_STRDUP(tmp_fname);
959 if (!resolved_name) {
960 DEBUG(0, ("check_reduced_name: malloc "
961 "fail for %s\n", tmp_fname));
962 return NT_STATUS_NO_MEMORY;
963 }
964 break;
965 }
966 default:
967 DEBUG(3,("check_reduced_name: couldn't get "
968 "realpath for %s\n", fname));
969 return map_nt_error_from_unix(errno);
970 }
971 }
972
973 DEBUG(10,("check_reduced_name realpath [%s] -> [%s]\n", fname,
974 resolved_name));
975
976 if (*resolved_name != '/') {
977 DEBUG(0,("check_reduced_name: realpath doesn't return "
978 "absolute paths !\n"));
979 SAFE_FREE(resolved_name);
980 return NT_STATUS_OBJECT_NAME_INVALID;
981 }
982
983 /* Check for widelinks allowed. */
984 if (!lp_widelinks(SNUM(conn))) {
985 const char *conn_rootdir;
986
987 conn_rootdir = SMB_VFS_CONNECTPATH(conn, fname);
988 if (conn_rootdir == NULL) {
989 DEBUG(2, ("check_reduced_name: Could not get "
990 "conn_rootdir\n"));
991 SAFE_FREE(resolved_name);
992 return NT_STATUS_ACCESS_DENIED;
993 }
994
995 if (strncmp(conn_rootdir, resolved_name,
996 strlen(conn_rootdir)) != 0) {
997 DEBUG(2, ("check_reduced_name: Bad access "
998 "attempt: %s is a symlink outside the "
999 "share path\n", fname));
1000 DEBUGADD(2, ("conn_rootdir =%s\n", conn_rootdir));
1001 DEBUGADD(2, ("resolved_name=%s\n", resolved_name));
1002 SAFE_FREE(resolved_name);
1003 return NT_STATUS_ACCESS_DENIED;
1004 }
1005 }
1006
1007 /* Check if we are allowing users to follow symlinks */
1008 /* Patch from David Clerc <David.Clerc@cui.unige.ch>
1009 University of Geneva */
1010
1011 #ifdef S_ISLNK
1012 if (!lp_symlinks(SNUM(conn))) {
1013 struct smb_filename *smb_fname = NULL;
1014 NTSTATUS status;
1015
1016 status = create_synthetic_smb_fname(talloc_tos(), fname, NULL,
1017 NULL, &smb_fname);
1018 if (!NT_STATUS_IS_OK(status)) {
1019 SAFE_FREE(resolved_name);
1020 return status;
1021 }
1022
1023 if ( (SMB_VFS_LSTAT(conn, smb_fname) != -1) &&
1024 (S_ISLNK(smb_fname->st.st_ex_mode)) ) {
1025 SAFE_FREE(resolved_name);
1026 DEBUG(3,("check_reduced_name: denied: file path name "
1027 "%s is a symlink\n",resolved_name));
1028 TALLOC_FREE(smb_fname);
1029 return NT_STATUS_ACCESS_DENIED;
1030 }
1031 TALLOC_FREE(smb_fname);
1032 }
1033 #endif
1034
1035 DEBUG(3,("check_reduced_name: %s reduced to %s\n", fname,
1036 resolved_name));
1037 SAFE_FREE(resolved_name);
1038 return NT_STATUS_OK;
1039 }
1040
1041 /**
1042 * XXX: This is temporary and there should be no callers of this once
1043 * smb_filename is plumbed through all path based operations.
1044 */
1045 int vfs_stat_smb_fname(struct connection_struct *conn, const char *fname,
1046 SMB_STRUCT_STAT *psbuf)
1047 {
1048 struct smb_filename *smb_fname = NULL;
1049 NTSTATUS status;
1050 int ret;
1051
1052 status = create_synthetic_smb_fname_split(talloc_tos(), fname, NULL,
1053 &smb_fname);
1054 if (!NT_STATUS_IS_OK(status)) {
1055 errno = map_errno_from_nt_status(status);
1056 return -1;
1057 }
1058
1059 if (lp_posix_pathnames()) {
1060 ret = SMB_VFS_LSTAT(conn, smb_fname);
1061 } else {
1062 ret = SMB_VFS_STAT(conn, smb_fname);
1063 }
1064
1065 if (ret != -1) {
1066 *psbuf = smb_fname->st;
1067 }
1068
1069 TALLOC_FREE(smb_fname);
1070 return ret;
1071 }
1072
1073 /**
1074 * XXX: This is temporary and there should be no callers of this once
1075 * smb_filename is plumbed through all path based operations.
1076 */
1077 int vfs_lstat_smb_fname(struct connection_struct *conn, const char *fname,
1078 SMB_STRUCT_STAT *psbuf)
1079 {
1080 struct smb_filename *smb_fname = NULL;
1081 NTSTATUS status;
1082 int ret;
1083
1084 status = create_synthetic_smb_fname_split(talloc_tos(), fname, NULL,
1085 &smb_fname);
1086 if (!NT_STATUS_IS_OK(status)) {
1087 errno = map_errno_from_nt_status(status);
1088 return -1;
1089 }
1090
1091 ret = SMB_VFS_LSTAT(conn, smb_fname);
1092 if (ret != -1) {
1093 *psbuf = smb_fname->st;
1094 }
1095
1096 TALLOC_FREE(smb_fname);
1097 return ret;
1098 }
1099
1100 /**
1101 * Ensure LSTAT is called for POSIX paths.
1102 */
1103
1104 NTSTATUS vfs_stat_fsp(files_struct *fsp)
1105 {
1106 int ret;
1107
1108 if(fsp->fh->fd == -1) {
1109 if (fsp->posix_open) {
1110 ret = SMB_VFS_LSTAT(fsp->conn, fsp->fsp_name);
1111 } else {
1112 ret = SMB_VFS_STAT(fsp->conn, fsp->fsp_name);
1113 }
1114 if (ret == -1) {
1115 return map_nt_error_from_unix(errno);
1116 }
1117 } else {
1118 if(SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st) != 0) {
1119 return map_nt_error_from_unix(errno);
1120 }
1121 }
1122 return NT_STATUS_OK;
1123 }
1124
1125 /*
1126 generate a file_id from a stat structure
1127 */
1128 struct file_id vfs_file_id_from_sbuf(connection_struct *conn, const SMB_STRUCT_STAT *sbuf)
1129 {
1130 return SMB_VFS_FILE_ID_CREATE(conn, sbuf);
1131 }
1132
1133 int smb_vfs_call_connect(struct vfs_handle_struct *handle,
1134 const char *service, const char *user)
1135 {
1136 VFS_FIND(connect_fn);
1137 return handle->fns->connect_fn(handle, service, user);
1138 }
1139
1140 void smb_vfs_call_disconnect(struct vfs_handle_struct *handle)
1141 {
1142 VFS_FIND(disconnect);
1143 handle->fns->disconnect(handle);
1144 }
1145
1146 uint64_t smb_vfs_call_disk_free(struct vfs_handle_struct *handle,
1147 const char *path, bool small_query,
1148 uint64_t *bsize, uint64_t *dfree,
1149 uint64_t *dsize)
1150 {
1151 VFS_FIND(disk_free);
1152 return handle->fns->disk_free(handle, path, small_query, bsize, dfree,
1153 dsize);
1154 }
1155
1156 int smb_vfs_call_get_quota(struct vfs_handle_struct *handle,
1157 enum SMB_QUOTA_TYPE qtype, unid_t id,
1158 SMB_DISK_QUOTA *qt)
1159 {
1160 VFS_FIND(get_quota);
1161 return handle->fns->get_quota(handle, qtype, id, qt);
1162 }
1163
1164 int smb_vfs_call_set_quota(struct vfs_handle_struct *handle,
1165 enum SMB_QUOTA_TYPE qtype, unid_t id,
1166 SMB_DISK_QUOTA *qt)
1167 {
1168 VFS_FIND(set_quota);
1169 return handle->fns->set_quota(handle, qtype, id, qt);
1170 }
1171
1172 int smb_vfs_call_get_shadow_copy_data(struct vfs_handle_struct *handle,
1173 struct files_struct *fsp,
1174 SHADOW_COPY_DATA *shadow_copy_data,
1175 bool labels)
1176 {
1177 VFS_FIND(get_shadow_copy_data);
1178 return handle->fns->get_shadow_copy_data(handle, fsp, shadow_copy_data,
1179 labels);
1180 }
1181 int smb_vfs_call_statvfs(struct vfs_handle_struct *handle, const char *path,
1182 struct vfs_statvfs_struct *statbuf)
1183 {
1184 VFS_FIND(statvfs);
1185 return handle->fns->statvfs(handle, path, statbuf);
1186 }
1187
1188 uint32_t smb_vfs_call_fs_capabilities(struct vfs_handle_struct *handle,
1189 enum timestamp_set_resolution *p_ts_res)
1190 {
1191 VFS_FIND(fs_capabilities);
1192 return handle->fns->fs_capabilities(handle, p_ts_res);
1193 }
1194
1195 SMB_STRUCT_DIR *smb_vfs_call_opendir(struct vfs_handle_struct *handle,
1196 const char *fname, const char *mask,
1197 uint32 attributes)
1198 {
1199 VFS_FIND(opendir);
1200 return handle->fns->opendir(handle, fname, mask, attributes);
1201 }
1202
1203 SMB_STRUCT_DIR *smb_vfs_call_fdopendir(struct vfs_handle_struct *handle,
1204 struct files_struct *fsp,
1205 const char *mask,
1206 uint32 attributes)
1207 {
1208 VFS_FIND(fdopendir);
1209 return handle->fns->fdopendir(handle, fsp, mask, attributes);
1210 }
1211
1212 SMB_STRUCT_DIRENT *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
1213 SMB_STRUCT_DIR *dirp,
1214 SMB_STRUCT_STAT *sbuf)
1215 {
1216 VFS_FIND(readdir);
1217 return handle->fns->readdir(handle, dirp, sbuf);
1218 }
1219
1220 void smb_vfs_call_seekdir(struct vfs_handle_struct *handle,
1221 SMB_STRUCT_DIR *dirp, long offset)
1222 {
1223 VFS_FIND(seekdir);
1224 handle->fns->seekdir(handle, dirp, offset);
1225 }
1226
1227 long smb_vfs_call_telldir(struct vfs_handle_struct *handle,
1228 SMB_STRUCT_DIR *dirp)
1229 {
1230 VFS_FIND(telldir);
1231 return handle->fns->telldir(handle, dirp);
1232 }
1233
1234 void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
1235 SMB_STRUCT_DIR *dirp)
1236 {
1237 VFS_FIND(rewind_dir);
1238 handle->fns->rewind_dir(handle, dirp);
1239 }
1240
1241 int smb_vfs_call_mkdir(struct vfs_handle_struct *handle, const char *path,
1242 mode_t mode)
1243 {
1244 VFS_FIND(mkdir);
1245 return handle->fns->mkdir(handle, path, mode);
1246 }
1247
1248 int smb_vfs_call_rmdir(struct vfs_handle_struct *handle, const char *path)
1249 {
1250 VFS_FIND(rmdir);
1251 return handle->fns->rmdir(handle, path);
1252 }
1253
1254 int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
1255 SMB_STRUCT_DIR *dir)
1256 {
1257 VFS_FIND(closedir);
1258 return handle->fns->closedir(handle, dir);
1259 }
1260
1261 void smb_vfs_call_init_search_op(struct vfs_handle_struct *handle,
1262 SMB_STRUCT_DIR *dirp)
1263 {
1264 VFS_FIND(init_search_op);
1265 handle->fns->init_search_op(handle, dirp);
1266 }
1267
1268 int smb_vfs_call_open(struct vfs_handle_struct *handle,
1269 struct smb_filename *smb_fname, struct files_struct *fsp,
1270 int flags, mode_t mode)
1271 {
1272 VFS_FIND(open);
1273 return handle->fns->open(handle, smb_fname, fsp, flags, mode);
1274 }
1275
1276 NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
1277 struct smb_request *req,
1278 uint16_t root_dir_fid,
1279 struct smb_filename *smb_fname,
1280 uint32_t access_mask,
1281 uint32_t share_access,
1282 uint32_t create_disposition,
1283 uint32_t create_options,
1284 uint32_t file_attributes,
1285 uint32_t oplock_request,
1286 uint64_t allocation_size,
1287 uint32_t private_flags,
1288 struct security_descriptor *sd,
1289 struct ea_list *ea_list,
1290 files_struct **result,
1291 int *pinfo)
1292 {
1293 VFS_FIND(create_file);
1294 return handle->fns->create_file(
1295 handle, req, root_dir_fid, smb_fname, access_mask,
1296 share_access, create_disposition, create_options,
1297 file_attributes, oplock_request, allocation_size,
1298 private_flags, sd, ea_list,
1299 result, pinfo);
1300 }
1301
1302 int smb_vfs_call_close_fn(struct vfs_handle_struct *handle,
1303 struct files_struct *fsp)
1304 {
1305 VFS_FIND(close_fn);
1306 return handle->fns->close_fn(handle, fsp);
1307 }
1308
1309 ssize_t smb_vfs_call_vfs_read(struct vfs_handle_struct *handle,
1310 struct files_struct *fsp, void *data, size_t n)
1311 {
1312 VFS_FIND(vfs_read);
1313 return handle->fns->vfs_read(handle, fsp, data, n);
1314 }
1315
1316 ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
1317 struct files_struct *fsp, void *data, size_t n,
1318 SMB_OFF_T offset)
1319 {
1320 VFS_FIND(pread);
1321 return handle->fns->pread(handle, fsp, data, n, offset);
1322 }
1323
1324 ssize_t smb_vfs_call_write(struct vfs_handle_struct *handle,
1325 struct files_struct *fsp, const void *data,
1326 size_t n)
1327 {
1328 VFS_FIND(write);
1329 return handle->fns->write(handle, fsp, data, n);
1330 }
1331
1332 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
1333 struct files_struct *fsp, const void *data,
1334 size_t n, SMB_OFF_T offset)
1335 {
1336 VFS_FIND(pwrite);
1337 return handle->fns->pwrite(handle, fsp, data, n, offset);
1338 }
1339
1340 SMB_OFF_T smb_vfs_call_lseek(struct vfs_handle_struct *handle,
1341 struct files_struct *fsp, SMB_OFF_T offset,
1342 int whence)
1343 {
1344 VFS_FIND(lseek);
1345 return handle->fns->lseek(handle, fsp, offset, whence);
1346 }
1347
1348 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
1349 files_struct *fromfsp, const DATA_BLOB *header,
1350 SMB_OFF_T offset, size_t count)
1351 {
1352 VFS_FIND(sendfile);
1353 return handle->fns->sendfile(handle, tofd, fromfsp, header, offset,
1354 count);
1355 }
1356
1357 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
1358 files_struct *tofsp, SMB_OFF_T offset,
1359 size_t count)
1360 {
1361 VFS_FIND(recvfile);
1362 return handle->fns->recvfile(handle, fromfd, tofsp, offset, count);
1363 }
1364
1365 int smb_vfs_call_rename(struct vfs_handle_struct *handle,
1366 const struct smb_filename *smb_fname_src,
1367 const struct smb_filename *smb_fname_dst)
1368 {
1369 VFS_FIND(rename);
1370 return handle->fns->rename(handle, smb_fname_src, smb_fname_dst);
1371 }
1372
1373 int smb_vfs_call_fsync(struct vfs_handle_struct *handle,
1374 struct files_struct *fsp)
1375 {
1376 VFS_FIND(fsync);
1377 return handle->fns->fsync(handle, fsp);
1378 }
1379
1380 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
1381 struct smb_filename *smb_fname)
1382 {
1383 VFS_FIND(stat);
1384 return handle->fns->stat(handle, smb_fname);
1385 }
1386
1387 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
1388 struct files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1389 {
1390 VFS_FIND(fstat);
1391 return handle->fns->fstat(handle, fsp, sbuf);
1392 }
1393
1394 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
1395 struct smb_filename *smb_filename)
1396 {
1397 VFS_FIND(lstat);
1398 return handle->fns->lstat(handle, smb_filename);
1399 }
1400
1401 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
1402 struct files_struct *fsp,
1403 const SMB_STRUCT_STAT *sbuf)
1404 {
1405 VFS_FIND(get_alloc_size);
1406 return handle->fns->get_alloc_size(handle, fsp, sbuf);
1407 }
1408
1409 int smb_vfs_call_unlink(struct vfs_handle_struct *handle,
1410 const struct smb_filename *smb_fname)
1411 {
1412 VFS_FIND(unlink);
1413 return handle->fns->unlink(handle, smb_fname);
1414 }
1415
1416 int smb_vfs_call_chmod(struct vfs_handle_struct *handle, const char *path,
1417 mode_t mode)
1418 {
1419 VFS_FIND(chmod);
1420 return handle->fns->chmod(handle, path, mode);
1421 }
1422
1423 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
1424 struct files_struct *fsp, mode_t mode)
1425 {
1426 VFS_FIND(fchmod);
1427 return handle->fns->fchmod(handle, fsp, mode);
1428 }
1429
1430 int smb_vfs_call_chown(struct vfs_handle_struct *handle, const char *path,
1431 uid_t uid, gid_t gid)
1432 {
1433 VFS_FIND(chown);
1434 return handle->fns->chown(handle, path, uid, gid);
1435 }
1436
1437 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
1438 struct files_struct *fsp, uid_t uid, gid_t gid)
1439 {
1440 VFS_FIND(fchown);
1441 return handle->fns->fchown(handle, fsp, uid, gid);
1442 }
1443
1444 int smb_vfs_call_lchown(struct vfs_handle_struct *handle, const char *path,
1445 uid_t uid, gid_t gid)
1446 {
1447 VFS_FIND(lchown);
1448 return handle->fns->lchown(handle, path, uid, gid);
1449 }
1450
1451 NTSTATUS vfs_chown_fsp(files_struct *fsp, uid_t uid, gid_t gid)
1452 {
1453 int ret;
1454
1455 if (fsp->fh->fd != -1) {
1456 /* Try fchown. */
1457 ret = SMB_VFS_FCHOWN(fsp, uid, gid);
1458 if (ret == 0) {
1459 return NT_STATUS_OK;
1460 }
1461 if (ret == -1 && errno != ENOSYS) {
1462 return map_nt_error_from_unix(errno);
1463 }
1464 }
1465
1466 if (fsp->posix_open) {
1467 ret = SMB_VFS_LCHOWN(fsp->conn,
1468 fsp->fsp_name->base_name,
1469 uid, gid);
1470 } else {
1471 ret = SMB_VFS_CHOWN(fsp->conn,
1472 fsp->fsp_name->base_name,
1473 uid, gid);
1474 }
1475 if (ret == 0) {
1476 return NT_STATUS_OK;
1477 }
1478 return map_nt_error_from_unix(errno);
1479 }
1480
1481 int smb_vfs_call_chdir(struct vfs_handle_struct *handle, const char *path)
1482 {
1483 VFS_FIND(chdir);
1484 return handle->fns->chdir(handle, path);
1485 }
1486
1487 char *smb_vfs_call_getwd(struct vfs_handle_struct *handle, char *buf)
1488 {
1489 VFS_FIND(getwd);
1490 return handle->fns->getwd(handle, buf);
1491 }
1492
1493 int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
1494 const struct smb_filename *smb_fname,
1495 struct smb_file_time *ft)
1496 {
1497 VFS_FIND(ntimes);
1498 return handle->fns->ntimes(handle, smb_fname, ft);
1499 }
1500
1501 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
1502 struct files_struct *fsp, SMB_OFF_T offset)
1503 {
1504 VFS_FIND(ftruncate);
1505 return handle->fns->ftruncate(handle, fsp, offset);
1506 }
1507
1508 int smb_vfs_call_fallocate(struct vfs_handle_struct *handle,
1509 struct files_struct *fsp,
1510 enum vfs_fallocate_mode mode,
1511 SMB_OFF_T offset,
1512 SMB_OFF_T len)
1513 {
1514 VFS_FIND(fallocate);
1515 return handle->fns->fallocate(handle, fsp, mode, offset, len);
1516 }
1517
1518 int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
1519 struct files_struct *fsp, uint32 share_mode,
1520 uint32_t access_mask)
1521 {
1522 VFS_FIND(kernel_flock);
1523 return handle->fns->kernel_flock(handle, fsp, share_mode,
1524 access_mask);
1525 }
1526
1527 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
1528 struct files_struct *fsp, int leasetype)
1529 {
1530 VFS_FIND(linux_setlease);
1531 return handle->fns->linux_setlease(handle, fsp, leasetype);
1532 }
1533
1534 int smb_vfs_call_symlink(struct vfs_handle_struct *handle, const char *oldpath,
1535 const char *newpath)
1536 {
1537 VFS_FIND(symlink);
1538 return handle->fns->symlink(handle, oldpath, newpath);
1539 }
1540
1541 int smb_vfs_call_vfs_readlink(struct vfs_handle_struct *handle,
1542 const char *path, char *buf, size_t bufsiz)
1543 {
1544 VFS_FIND(vfs_readlink);
1545 return handle->fns->vfs_readlink(handle, path, buf, bufsiz);
1546 }
1547
1548 int smb_vfs_call_link(struct vfs_handle_struct *handle, const char *oldpath,
1549 const char *newpath)
1550 {
1551 VFS_FIND(link);
1552 return handle->fns->link(handle, oldpath, newpath);
1553 }
1554
1555 int smb_vfs_call_mknod(struct vfs_handle_struct *handle, const char *path,
1556 mode_t mode, SMB_DEV_T dev)
1557 {
1558 VFS_FIND(mknod);
1559 return handle->fns->mknod(handle, path, mode, dev);
1560 }
1561
1562 char *smb_vfs_call_realpath(struct vfs_handle_struct *handle, const char *path)
1563 {
1564 VFS_FIND(realpath);
1565 return handle->fns->realpath(handle, path);
1566 }
1567
1568 NTSTATUS smb_vfs_call_notify_watch(struct vfs_handle_struct *handle,
1569 struct sys_notify_context *ctx,
1570 struct notify_entry *e,
1571 void (*callback)(struct sys_notify_context *ctx,
1572 void *private_data,
1573 struct notify_event *ev),
1574 void *private_data, void *handle_p)
1575 {
1576 VFS_FIND(notify_watch);
1577 return handle->fns->notify_watch(handle, ctx, e, callback,
1578 private_data, handle_p);
1579 }
1580
1581 int smb_vfs_call_chflags(struct vfs_handle_struct *handle, const char *path,
1582 unsigned int flags)
1583 {
1584 VFS_FIND(chflags);
1585 return handle->fns->chflags(handle, path, flags);
1586 }
1587
1588 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
1589 const SMB_STRUCT_STAT *sbuf)
1590 {
1591 VFS_FIND(file_id_create);
1592 return handle->fns->file_id_create(handle, sbuf);
1593 }
1594
1595 NTSTATUS smb_vfs_call_streaminfo(struct vfs_handle_struct *handle,
1596 struct files_struct *fsp,
1597 const char *fname,
1598 TALLOC_CTX *mem_ctx,
1599 unsigned int *num_streams,
1600 struct stream_struct **streams)
1601 {
1602 VFS_FIND(streaminfo);
1603 return handle->fns->streaminfo(handle, fsp, fname, mem_ctx,
1604 num_streams, streams);
1605 }
1606
1607 int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
1608 const char *path, const char *name,
1609 TALLOC_CTX *mem_ctx, char **found_name)
1610 {
1611 VFS_FIND(get_real_filename);
1612 return handle->fns->get_real_filename(handle, path, name, mem_ctx,
1613 found_name);
1614 }
1615
1616 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
1617 const char *filename)
1618 {
1619 VFS_FIND(connectpath);
1620 return handle->fns->connectpath(handle, filename);
1621 }
1622
1623 bool smb_vfs_call_strict_lock(struct vfs_handle_struct *handle,
1624 struct files_struct *fsp,
1625 struct lock_struct *plock)
1626 {
1627 VFS_FIND(strict_lock);
1628 return handle->fns->strict_lock(handle, fsp, plock);
1629 }
1630
1631 void smb_vfs_call_strict_unlock(struct vfs_handle_struct *handle,
1632 struct files_struct *fsp,
1633 struct lock_struct *plock)
1634 {
1635 VFS_FIND(strict_unlock);
1636 handle->fns->strict_unlock(handle, fsp, plock);
1637 }
1638
1639 NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
1640 const char *name,
1641 enum vfs_translate_direction direction,
1642 TALLOC_CTX *mem_ctx,
1643 char **mapped_name)
1644 {
1645 VFS_FIND(translate_name);
1646 return handle->fns->translate_name(handle, name, direction, mem_ctx,
1647 mapped_name);
1648 }
1649
1650 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
1651 struct files_struct *fsp,
1652 uint32 security_info,
1653 struct security_descriptor **ppdesc)
1654 {
1655 VFS_FIND(fget_nt_acl);
1656 return handle->fns->fget_nt_acl(handle, fsp, security_info,
1657 ppdesc);
1658 }
1659
1660 NTSTATUS smb_vfs_call_get_nt_acl(struct vfs_handle_struct *handle,
1661 const char *name,
1662 uint32 security_info,
1663 struct security_descriptor **ppdesc)
1664 {
1665 VFS_FIND(get_nt_acl);
1666 return handle->fns->get_nt_acl(handle, name, security_info, ppdesc);
1667 }
1668
1669 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
1670 struct files_struct *fsp,
1671 uint32 security_info_sent,
1672 const struct security_descriptor *psd)
1673 {
1674 VFS_FIND(fset_nt_acl);
1675 return handle->fns->fset_nt_acl(handle, fsp, security_info_sent, psd);
1676 }
1677
1678 int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle, const char *name,
1679 mode_t mode)
1680 {
1681 VFS_FIND(chmod_acl);
1682 return handle->fns->chmod_acl(handle, name, mode);
1683 }
1684
1685 int smb_vfs_call_fchmod_acl(struct vfs_handle_struct *handle,
1686 struct files_struct *fsp, mode_t mode)
1687 {
1688 VFS_FIND(fchmod_acl);
1689 return handle->fns->fchmod_acl(handle, fsp, mode);
1690 }
1691
1692 int smb_vfs_call_sys_acl_get_entry(struct vfs_handle_struct *handle,
1693 SMB_ACL_T theacl, int entry_id,
1694 SMB_ACL_ENTRY_T *entry_p)
1695 {
1696 VFS_FIND(sys_acl_get_entry);
1697 return handle->fns->sys_acl_get_entry(handle, theacl, entry_id,
1698 entry_p);
1699 }
1700
1701 int smb_vfs_call_sys_acl_get_tag_type(struct vfs_handle_struct *handle,
1702 SMB_ACL_ENTRY_T entry_d,
1703 SMB_ACL_TAG_T *tag_type_p)
1704 {
1705 VFS_FIND(sys_acl_get_tag_type);
1706 return handle->fns->sys_acl_get_tag_type(handle, entry_d, tag_type_p);
1707 }
1708
1709 int smb_vfs_call_sys_acl_get_permset(struct vfs_handle_struct *handle,
1710 SMB_ACL_ENTRY_T entry_d,
1711 SMB_ACL_PERMSET_T *permset_p)
1712 {
1713 VFS_FIND(sys_acl_get_permset);
1714 return handle->fns->sys_acl_get_permset(handle, entry_d, permset_p);
1715 }
1716
1717 void * smb_vfs_call_sys_acl_get_qualifier(struct vfs_handle_struct *handle,
1718 SMB_ACL_ENTRY_T entry_d)
1719 {
1720 VFS_FIND(sys_acl_get_qualifier);
1721 return handle->fns->sys_acl_get_qualifier(handle, entry_d);
1722 }
1723
1724 SMB_ACL_T smb_vfs_call_sys_acl_get_file(struct vfs_handle_struct *handle,
1725 const char *path_p,
1726 SMB_ACL_TYPE_T type)
1727 {
1728 VFS_FIND(sys_acl_get_file);
1729 return handle->fns->sys_acl_get_file(handle, path_p, type);
1730 }
1731
1732 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
1733 struct files_struct *fsp)
1734 {
1735 VFS_FIND(sys_acl_get_fd);
1736 return handle->fns->sys_acl_get_fd(handle, fsp);
1737 }
1738
1739 int smb_vfs_call_sys_acl_clear_perms(struct vfs_handle_struct *handle,
1740 SMB_ACL_PERMSET_T permset)
1741 {
1742 VFS_FIND(sys_acl_clear_perms);
1743 return handle->fns->sys_acl_clear_perms(handle, permset);
1744 }
1745
1746 int smb_vfs_call_sys_acl_add_perm(struct vfs_handle_struct *handle,
1747 SMB_ACL_PERMSET_T permset,
1748 SMB_ACL_PERM_T perm)
1749 {
1750 VFS_FIND(sys_acl_add_perm);
1751 return handle->fns->sys_acl_add_perm(handle, permset, perm);
1752 }
1753
1754 char * smb_vfs_call_sys_acl_to_text(struct vfs_handle_struct *handle,
1755 SMB_ACL_T theacl, ssize_t *plen)
1756 {
1757 VFS_FIND(sys_acl_to_text);
1758 return handle->fns->sys_acl_to_text(handle, theacl, plen);
1759 }
1760
1761 SMB_ACL_T smb_vfs_call_sys_acl_init(struct vfs_handle_struct *handle,
1762 int count)
1763 {
1764 VFS_FIND(sys_acl_init);
1765 return handle->fns->sys_acl_init(handle, count);
1766 }
1767
1768 int smb_vfs_call_sys_acl_create_entry(struct vfs_handle_struct *handle,
1769 SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry)
1770 {
1771 VFS_FIND(sys_acl_create_entry);
1772 return handle->fns->sys_acl_create_entry(handle, pacl, pentry);
1773 }
1774
1775 int smb_vfs_call_sys_acl_set_tag_type(struct vfs_handle_struct *handle,
1776 SMB_ACL_ENTRY_T entry,
1777 SMB_ACL_TAG_T tagtype)
1778 {
1779 VFS_FIND(sys_acl_set_tag_type);
1780 return handle->fns->sys_acl_set_tag_type(handle, entry, tagtype);
1781 }
1782
1783 int smb_vfs_call_sys_acl_set_qualifier(struct vfs_handle_struct *handle,
1784 SMB_ACL_ENTRY_T entry, void *qual)
1785 {
1786 VFS_FIND(sys_acl_set_qualifier);
1787 return handle->fns->sys_acl_set_qualifier(handle, entry, qual);
1788 }
1789
1790 int smb_vfs_call_sys_acl_set_permset(struct vfs_handle_struct *handle,
1791 SMB_ACL_ENTRY_T entry,
1792 SMB_ACL_PERMSET_T permset)
1793 {
1794 VFS_FIND(sys_acl_set_permset);
1795 return handle->fns->sys_acl_set_permset(handle, entry, permset);
1796 }
1797
1798 int smb_vfs_call_sys_acl_valid(struct vfs_handle_struct *handle,
1799 SMB_ACL_T theacl)
1800 {
1801 VFS_FIND(sys_acl_valid);
1802 return handle->fns->sys_acl_valid(handle, theacl);
1803 }
1804
1805 int smb_vfs_call_sys_acl_set_file(struct vfs_handle_struct *handle,
1806 const char *name, SMB_ACL_TYPE_T acltype,
1807 SMB_ACL_T theacl)
1808 {
1809 VFS_FIND(sys_acl_set_file);
1810 return handle->fns->sys_acl_set_file(handle, name, acltype, theacl);
1811 }
1812
1813 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
1814 struct files_struct *fsp, SMB_ACL_T theacl)
1815 {
1816 VFS_FIND(sys_acl_set_fd);
1817 return handle->fns->sys_acl_set_fd(handle, fsp, theacl);
1818 }
1819
1820 int smb_vfs_call_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
1821 const char *path)
1822 {
1823 VFS_FIND(sys_acl_delete_def_file);
1824 return handle->fns->sys_acl_delete_def_file(handle, path);
1825 }
1826
1827 int smb_vfs_call_sys_acl_get_perm(struct vfs_handle_struct *handle,
1828 SMB_ACL_PERMSET_T permset,
1829 SMB_ACL_PERM_T perm)
1830 {
1831 VFS_FIND(sys_acl_get_perm);
1832 return handle->fns->sys_acl_get_perm(handle, permset, perm);
1833 }
1834
1835 int smb_vfs_call_sys_acl_free_text(struct vfs_handle_struct *handle,
1836 char *text)
1837 {
1838 VFS_FIND(sys_acl_free_text);
1839 return handle->fns->sys_acl_free_text(handle, text);
1840 }
1841
1842 int smb_vfs_call_sys_acl_free_acl(struct vfs_handle_struct *handle,
1843 SMB_ACL_T posix_acl)
1844 {
1845 VFS_FIND(sys_acl_free_acl);
1846 return handle->fns->sys_acl_free_acl(handle, posix_acl);
1847 }
1848
1849 int smb_vfs_call_sys_acl_free_qualifier(struct vfs_handle_struct *handle,
1850 void *qualifier, SMB_ACL_TAG_T tagtype)
1851 {
1852 VFS_FIND(sys_acl_free_qualifier);
1853 return handle->fns->sys_acl_free_qualifier(handle, qualifier, tagtype);
1854 }
1855
1856 ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
1857 const char *path, const char *name, void *value,
1858 size_t size)
1859 {
1860 VFS_FIND(getxattr);
1861 return handle->fns->getxattr(handle, path, name, value, size);
1862 }
1863
1864 ssize_t smb_vfs_call_lgetxattr(struct vfs_handle_struct *handle,
1865 const char *path, const char *name, void *value,
1866 size_t size)
1867 {
1868 VFS_FIND(lgetxattr);
1869 return handle->fns->lgetxattr(handle, path, name, value, size);
1870 }
1871
1872 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
1873 struct files_struct *fsp, const char *name,
1874 void *value, size_t size)
1875 {
1876 VFS_FIND(fgetxattr);
1877 return handle->fns->fgetxattr(handle, fsp, name, value, size);
1878 }
1879
1880 ssize_t smb_vfs_call_listxattr(struct vfs_handle_struct *handle,
1881 const char *path, char *list, size_t size)
1882 {
1883 VFS_FIND(listxattr);
1884 return handle->fns->listxattr(handle, path, list, size);
1885 }
1886
1887 ssize_t smb_vfs_call_llistxattr(struct vfs_handle_struct *handle,
1888 const char *path, char *list, size_t size)
1889 {
1890 VFS_FIND(llistxattr);
1891 return handle->fns->llistxattr(handle, path, list, size);
1892 }
1893
1894 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
1895 struct files_struct *fsp, char *list,
1896 size_t size)
1897 {
1898 VFS_FIND(flistxattr);
1899 return handle->fns->flistxattr(handle, fsp, list, size);
1900 }
1901
1902 int smb_vfs_call_removexattr(struct vfs_handle_struct *handle,
1903 const char *path, const char *name)
1904 {
1905 VFS_FIND(removexattr);
1906 return handle->fns->removexattr(handle, path, name);
1907 }
1908
1909 int smb_vfs_call_lremovexattr(struct vfs_handle_struct *handle,
1910 const char *path, const char *name)
1911 {
1912 VFS_FIND(lremovexattr);
1913 return handle->fns->lremovexattr(handle, path, name);
1914 }
1915
1916 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
1917 struct files_struct *fsp, const char *name)
1918 {
1919 VFS_FIND(fremovexattr);
1920 return handle->fns->fremovexattr(handle, fsp, name);
1921 }
1922
1923 int smb_vfs_call_setxattr(struct vfs_handle_struct *handle, const char *path,
1924 const char *name, const void *value, size_t size,
1925 int flags)
1926 {
1927 VFS_FIND(setxattr);
1928 return handle->fns->setxattr(handle, path, name, value, size, flags);
1929 }
1930
1931 int smb_vfs_call_lsetxattr(struct vfs_handle_struct *handle, const char *path,
1932 const char *name, const void *value, size_t size,
1933 int flags)
1934 {
1935 VFS_FIND(lsetxattr);
1936 return handle->fns->lsetxattr(handle, path, name, value, size, flags);
1937 }
1938
1939 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
1940 struct files_struct *fsp, const char *name,
1941 const void *value, size_t size, int flags)
1942 {
1943 VFS_FIND(fsetxattr);
1944 return handle->fns->fsetxattr(handle, fsp, name, value, size, flags);
1945 }
1946
1947 int smb_vfs_call_aio_read(struct vfs_handle_struct *handle,
1948 struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1949 {
1950 VFS_FIND(aio_read);
1951 return handle->fns->aio_read(handle, fsp, aiocb);
1952 }
1953
1954 int smb_vfs_call_aio_write(struct vfs_handle_struct *handle,
1955 struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1956 {
1957 VFS_FIND(aio_write);
1958 return handle->fns->aio_write(handle, fsp, aiocb);
1959 }
1960
1961 ssize_t smb_vfs_call_aio_return_fn(struct vfs_handle_struct *handle,
1962 struct files_struct *fsp,
1963 SMB_STRUCT_AIOCB *aiocb)
1964 {
1965 VFS_FIND(aio_return_fn);
1966 return handle->fns->aio_return_fn(handle, fsp, aiocb);
1967 }
1968
1969 int smb_vfs_call_aio_cancel(struct vfs_handle_struct *handle,
1970 struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1971 {
1972 VFS_FIND(aio_cancel);
1973 return handle->fns->aio_cancel(handle, fsp, aiocb);
1974 }
1975
1976 int smb_vfs_call_aio_error_fn(struct vfs_handle_struct *handle,
1977 struct files_struct *fsp,
1978 SMB_STRUCT_AIOCB *aiocb)
1979 {
1980 VFS_FIND(aio_error_fn);
1981 return handle->fns->aio_error_fn(handle, fsp, aiocb);
1982 }
1983
1984 int smb_vfs_call_aio_fsync(struct vfs_handle_struct *handle,
1985 struct files_struct *fsp, int op,
1986 SMB_STRUCT_AIOCB *aiocb)
1987 {
1988 VFS_FIND(aio_fsync);
1989 return handle->fns->aio_fsync(handle, fsp, op, aiocb);
1990 }
1991
1992 int smb_vfs_call_aio_suspend(struct vfs_handle_struct *handle,
1993 struct files_struct *fsp,
1994 const SMB_STRUCT_AIOCB * const aiocb[], int n,
1995 const struct timespec *timeout)
1996 {
1997 VFS_FIND(aio_suspend);
1998 return handle->fns->aio_suspend(handle, fsp, aiocb, n, timeout);
1999 }
2000
2001 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
2002 struct files_struct *fsp)
2003 {
2004 VFS_FIND(aio_force);
2005 return handle->fns->aio_force(handle, fsp);
2006 }
2007
2008 bool smb_vfs_call_is_offline(struct vfs_handle_struct *handle,
2009 const char *path, SMB_STRUCT_STAT *sbuf)
2010 {
2011 VFS_FIND(is_offline);
2012 return handle->fns->is_offline(handle, path, sbuf);
2013 }
2014
2015 int smb_vfs_call_set_offline(struct vfs_handle_struct *handle,
2016 const char *path)
2017 {
2018 VFS_FIND(set_offline);
2019 return handle->fns->set_offline(handle, path);
2020 }
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