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s3:g_lock: remove a nested event loop, replacing the inner loop by select
[Samba.git] / source3 / smbd / vfs.c
blob0dd5bb98f7997f01ecf4043d549611b003bd088c
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
29 #undef DBGC_CLASS
30 #define DBGC_CLASS DBGC_VFS
31
32 static_decl_vfs;
33
34 struct vfs_init_function_entry {
35 char *name;
36 struct vfs_init_function_entry *prev, *next;
37 const struct vfs_fn_pointers *fns;
38 };
39
40 /****************************************************************************
41 maintain the list of available backends
42 ****************************************************************************/
43
44 static struct vfs_init_function_entry *vfs_find_backend_entry(const char *name)
45 {
46 struct vfs_init_function_entry *entry = backends;
47
48 DEBUG(10, ("vfs_find_backend_entry called for %s\n", name));
49
50 while(entry) {
51 if (strcmp(entry->name, name)==0) return entry;
52 entry = entry->next;
53 }
54
55 return NULL;
56 }
57
58 NTSTATUS smb_register_vfs(int version, const char *name,
59 const struct vfs_fn_pointers *fns)
60 {
61 struct vfs_init_function_entry *entry = backends;
62
63 if ((version != SMB_VFS_INTERFACE_VERSION)) {
64 DEBUG(0, ("Failed to register vfs module.\n"
65 "The module was compiled against SMB_VFS_INTERFACE_VERSION %d,\n"
66 "current SMB_VFS_INTERFACE_VERSION is %d.\n"
67 "Please recompile against the current Samba Version!\n",
68 version, SMB_VFS_INTERFACE_VERSION));
69 return NT_STATUS_OBJECT_TYPE_MISMATCH;
70 }
71
72 if (!name || !name[0]) {
73 DEBUG(0,("smb_register_vfs() called with NULL pointer or empty name!\n"));
74 return NT_STATUS_INVALID_PARAMETER;
75 }
76
77 if (vfs_find_backend_entry(name)) {
78 DEBUG(0,("VFS module %s already loaded!\n", name));
79 return NT_STATUS_OBJECT_NAME_COLLISION;
80 }
81
82 entry = SMB_XMALLOC_P(struct vfs_init_function_entry);
83 entry->name = smb_xstrdup(name);
84 entry->fns = fns;
85
86 DLIST_ADD(backends, entry);
87 DEBUG(5, ("Successfully added vfs backend '%s'\n", name));
88 return NT_STATUS_OK;
89 }
90
91 /****************************************************************************
92 initialise default vfs hooks
93 ****************************************************************************/
94
95 static void vfs_init_default(connection_struct *conn)
96 {
97 DEBUG(3, ("Initialising default vfs hooks\n"));
98 vfs_init_custom(conn, DEFAULT_VFS_MODULE_NAME);
99 }
100
101 /****************************************************************************
102 initialise custom vfs hooks
103 ****************************************************************************/
104
105 bool vfs_init_custom(connection_struct *conn, const char *vfs_object)
106 {
107 char *module_path = NULL;
108 char *module_name = NULL;
109 char *module_param = NULL, *p;
110 vfs_handle_struct *handle;
111 const struct vfs_init_function_entry *entry;
112
113 if (!conn||!vfs_object||!vfs_object[0]) {
114 DEBUG(0,("vfs_init_custon() called with NULL pointer or emtpy vfs_object!\n"));
115 return False;
116 }
117
118 if(!backends) {
119 static_init_vfs;
120 }
121
122 DEBUG(3, ("Initialising custom vfs hooks from [%s]\n", vfs_object));
123
124 module_path = smb_xstrdup(vfs_object);
125
126 p = strchr_m(module_path, ':');
127
128 if (p) {
129 *p = 0;
130 module_param = p+1;
131 trim_char(module_param, ' ', ' ');
132 }
133
134 trim_char(module_path, ' ', ' ');
135
136 module_name = smb_xstrdup(module_path);
137
138 if ((module_name[0] == '/') &&
139 (strcmp(module_path, DEFAULT_VFS_MODULE_NAME) != 0)) {
140
141 /*
142 * Extract the module name from the path. Just use the base
143 * name of the last path component.
144 */
145
146 SAFE_FREE(module_name);
147 module_name = smb_xstrdup(strrchr_m(module_path, '/')+1);
148
149 p = strchr_m(module_name, '.');
150
151 if (p != NULL) {
152 *p = '\0';
153 }
154 }
155
156 /* First, try to load the module with the new module system */
157 entry = vfs_find_backend_entry(module_name);
158 if (!entry) {
159 NTSTATUS status;
160
161 DEBUG(5, ("vfs module [%s] not loaded - trying to load...\n",
162 vfs_object));
163
164 status = smb_probe_module("vfs", module_path);
165 if (!NT_STATUS_IS_OK(status)) {
166 DEBUG(0, ("error probing vfs module '%s': %s\n",
167 module_path, nt_errstr(status)));
168 goto fail;
169 }
170
171 entry = vfs_find_backend_entry(module_name);
172 if (!entry) {
173 DEBUG(0,("Can't find a vfs module [%s]\n",vfs_object));
174 goto fail;
175 }
176 }
177
178 DEBUGADD(5,("Successfully loaded vfs module [%s] with the new modules system\n", vfs_object));
179
180 handle = TALLOC_ZERO_P(conn, vfs_handle_struct);
181 if (!handle) {
182 DEBUG(0,("TALLOC_ZERO() failed!\n"));
183 goto fail;
184 }
185 handle->conn = conn;
186 handle->fns = entry->fns;
187 if (module_param) {
188 handle->param = talloc_strdup(conn, module_param);
189 }
190 DLIST_ADD(conn->vfs_handles, handle);
191
192 SAFE_FREE(module_path);
193 SAFE_FREE(module_name);
194 return True;
195
196 fail:
197 SAFE_FREE(module_path);
198 SAFE_FREE(module_name);
199 return False;
200 }
201
202 /*****************************************************************
203 Allow VFS modules to extend files_struct with VFS-specific state.
204 This will be ok for small numbers of extensions, but might need to
205 be refactored if it becomes more widely used.
206 ******************************************************************/
207
208 #define EXT_DATA_AREA(e) ((uint8 *)(e) + sizeof(struct vfs_fsp_data))
209
210 void *vfs_add_fsp_extension_notype(vfs_handle_struct *handle,
211 files_struct *fsp, size_t ext_size,
212 void (*destroy_fn)(void *p_data))
213 {
214 struct vfs_fsp_data *ext;
215 void * ext_data;
216
217 /* Prevent VFS modules adding multiple extensions. */
218 if ((ext_data = vfs_fetch_fsp_extension(handle, fsp))) {
219 return ext_data;
220 }
221
222 ext = (struct vfs_fsp_data *)TALLOC_ZERO(
223 handle->conn, sizeof(struct vfs_fsp_data) + ext_size);
224 if (ext == NULL) {
225 return NULL;
226 }
227
228 ext->owner = handle;
229 ext->next = fsp->vfs_extension;
230 ext->destroy = destroy_fn;
231 fsp->vfs_extension = ext;
232 return EXT_DATA_AREA(ext);
233 }
234
235 void vfs_remove_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
236 {
237 struct vfs_fsp_data *curr;
238 struct vfs_fsp_data *prev;
239
240 for (curr = fsp->vfs_extension, prev = NULL;
241 curr;
242 prev = curr, curr = curr->next) {
243 if (curr->owner == handle) {
244 if (prev) {
245 prev->next = curr->next;
246 } else {
247 fsp->vfs_extension = curr->next;
248 }
249 if (curr->destroy) {
250 curr->destroy(EXT_DATA_AREA(curr));
251 }
252 TALLOC_FREE(curr);
253 return;
254 }
255 }
256 }
257
258 void *vfs_memctx_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
259 {
260 struct vfs_fsp_data *head;
261
262 for (head = fsp->vfs_extension; head; head = head->next) {
263 if (head->owner == handle) {
264 return head;
265 }
266 }
267
268 return NULL;
269 }
270
271 void *vfs_fetch_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
272 {
273 struct vfs_fsp_data *head;
274
275 head = (struct vfs_fsp_data *)vfs_memctx_fsp_extension(handle, fsp);
276 if (head != NULL) {
277 return EXT_DATA_AREA(head);
278 }
279
280 return NULL;
281 }
282
283 #undef EXT_DATA_AREA
284
285 /*****************************************************************
286 Generic VFS init.
287 ******************************************************************/
288
289 bool smbd_vfs_init(connection_struct *conn)
290 {
291 const char **vfs_objects;
292 unsigned int i = 0;
293 int j = 0;
294
295 /* Normal share - initialise with disk access functions */
296 vfs_init_default(conn);
297 vfs_objects = lp_vfs_objects(SNUM(conn));
298
299 /* Override VFS functions if 'vfs object' was not specified*/
300 if (!vfs_objects || !vfs_objects[0])
301 return True;
302
303 for (i=0; vfs_objects[i] ;) {
304 i++;
305 }
306
307 for (j=i-1; j >= 0; j--) {
308 if (!vfs_init_custom(conn, vfs_objects[j])) {
309 DEBUG(0, ("smbd_vfs_init: vfs_init_custom failed for %s\n", vfs_objects[j]));
310 return False;
311 }
312 }
313 return True;
314 }
315
316 /*******************************************************************
317 Check if a file exists in the vfs.
318 ********************************************************************/
319
320 NTSTATUS vfs_file_exist(connection_struct *conn, struct smb_filename *smb_fname)
321 {
322 /* Only return OK if stat was successful and S_ISREG */
323 if ((SMB_VFS_STAT(conn, smb_fname) != -1) &&
324 S_ISREG(smb_fname->st.st_ex_mode)) {
325 return NT_STATUS_OK;
326 }
327
328 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
329 }
330
331 /****************************************************************************
332 Read data from fsp on the vfs. (note: EINTR re-read differs from vfs_write_data)
333 ****************************************************************************/
334
335 ssize_t vfs_read_data(files_struct *fsp, char *buf, size_t byte_count)
336 {
337 size_t total=0;
338
339 while (total < byte_count)
340 {
341 ssize_t ret = SMB_VFS_READ(fsp, buf + total,
342 byte_count - total);
343
344 if (ret == 0) return total;
345 if (ret == -1) {
346 if (errno == EINTR)
347 continue;
348 else
349 return -1;
350 }
351 total += ret;
352 }
353 return (ssize_t)total;
354 }
355
356 ssize_t vfs_pread_data(files_struct *fsp, char *buf,
357 size_t byte_count, SMB_OFF_T offset)
358 {
359 size_t total=0;
360
361 while (total < byte_count)
362 {
363 ssize_t ret = SMB_VFS_PREAD(fsp, buf + total,
364 byte_count - total, offset + total);
365
366 if (ret == 0) return total;
367 if (ret == -1) {
368 if (errno == EINTR)
369 continue;
370 else
371 return -1;
372 }
373 total += ret;
374 }
375 return (ssize_t)total;
376 }
377
378 /****************************************************************************
379 Write data to a fd on the vfs.
380 ****************************************************************************/
381
382 ssize_t vfs_write_data(struct smb_request *req,
383 files_struct *fsp,
384 const char *buffer,
385 size_t N)
386 {
387 size_t total=0;
388 ssize_t ret;
389
390 if (req && req->unread_bytes) {
391 SMB_ASSERT(req->unread_bytes == N);
392 /* VFS_RECVFILE must drain the socket
393 * before returning. */
394 req->unread_bytes = 0;
395 return SMB_VFS_RECVFILE(smbd_server_fd(),
396 fsp,
397 (SMB_OFF_T)-1,
398 N);
399 }
400
401 while (total < N) {
402 ret = SMB_VFS_WRITE(fsp, buffer + total, N - total);
403
404 if (ret == -1)
405 return -1;
406 if (ret == 0)
407 return total;
408
409 total += ret;
410 }
411 return (ssize_t)total;
412 }
413
414 ssize_t vfs_pwrite_data(struct smb_request *req,
415 files_struct *fsp,
416 const char *buffer,
417 size_t N,
418 SMB_OFF_T offset)
419 {
420 size_t total=0;
421 ssize_t ret;
422
423 if (req && req->unread_bytes) {
424 SMB_ASSERT(req->unread_bytes == N);
425 /* VFS_RECVFILE must drain the socket
426 * before returning. */
427 req->unread_bytes = 0;
428 return SMB_VFS_RECVFILE(smbd_server_fd(),
429 fsp,
430 offset,
431 N);
432 }
433
434 while (total < N) {
435 ret = SMB_VFS_PWRITE(fsp, buffer + total, N - total,
436 offset + total);
437
438 if (ret == -1)
439 return -1;
440 if (ret == 0)
441 return total;
442
443 total += ret;
444 }
445 return (ssize_t)total;
446 }
447 /****************************************************************************
448 An allocate file space call using the vfs interface.
449 Allocates space for a file from a filedescriptor.
450 Returns 0 on success, -1 on failure.
451 ****************************************************************************/
452
453 int vfs_allocate_file_space(files_struct *fsp, uint64_t len)
454 {
455 int ret;
456 SMB_STRUCT_STAT st;
457 connection_struct *conn = fsp->conn;
458 uint64_t space_avail;
459 uint64_t bsize,dfree,dsize;
460
461 /*
462 * Actually try and commit the space on disk....
463 */
464
465 DEBUG(10,("vfs_allocate_file_space: file %s, len %.0f\n",
466 fsp_str_dbg(fsp), (double)len));
467
468 if (((SMB_OFF_T)len) < 0) {
469 DEBUG(0,("vfs_allocate_file_space: %s negative len "
470 "requested.\n", fsp_str_dbg(fsp)));
471 errno = EINVAL;
472 return -1;
473 }
474
475 ret = SMB_VFS_FSTAT(fsp, &st);
476 if (ret == -1)
477 return ret;
478
479 if (len == (uint64_t)st.st_ex_size)
480 return 0;
481
482 if (len < (uint64_t)st.st_ex_size) {
483 /* Shrink - use ftruncate. */
484
485 DEBUG(10,("vfs_allocate_file_space: file %s, shrink. Current "
486 "size %.0f\n", fsp_str_dbg(fsp),
487 (double)st.st_ex_size));
488
489 contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_ALLOC_SHRINK);
490
491 flush_write_cache(fsp, SIZECHANGE_FLUSH);
492 if ((ret = SMB_VFS_FTRUNCATE(fsp, (SMB_OFF_T)len)) != -1) {
493 set_filelen_write_cache(fsp, len);
494 }
495
496 contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_ALLOC_SHRINK);
497
498 return ret;
499 }
500
501 /* Grow - we need to test if we have enough space. */
502
503 contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_ALLOC_GROW);
504 contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_ALLOC_GROW);
505
506 if (!lp_strict_allocate(SNUM(fsp->conn)))
507 return 0;
508
509 len -= st.st_ex_size;
510 len /= 1024; /* Len is now number of 1k blocks needed. */
511 space_avail = get_dfree_info(conn, fsp->fsp_name->base_name, false,
512 &bsize, &dfree, &dsize);
513 if (space_avail == (uint64_t)-1) {
514 return -1;
515 }
516
517 DEBUG(10,("vfs_allocate_file_space: file %s, grow. Current size %.0f, "
518 "needed blocks = %.0f, space avail = %.0f\n",
519 fsp_str_dbg(fsp), (double)st.st_ex_size, (double)len,
520 (double)space_avail));
521
522 if (len > space_avail) {
523 errno = ENOSPC;
524 return -1;
525 }
526
527 return 0;
528 }
529
530 /****************************************************************************
531 A vfs set_filelen call.
532 set the length of a file from a filedescriptor.
533 Returns 0 on success, -1 on failure.
534 ****************************************************************************/
535
536 int vfs_set_filelen(files_struct *fsp, SMB_OFF_T len)
537 {
538 int ret;
539
540 contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_SET_FILE_LEN);
541
542 DEBUG(10,("vfs_set_filelen: ftruncate %s to len %.0f\n",
543 fsp_str_dbg(fsp), (double)len));
544 flush_write_cache(fsp, SIZECHANGE_FLUSH);
545 if ((ret = SMB_VFS_FTRUNCATE(fsp, len)) != -1) {
546 set_filelen_write_cache(fsp, len);
547 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
548 FILE_NOTIFY_CHANGE_SIZE
549 | FILE_NOTIFY_CHANGE_ATTRIBUTES,
550 fsp->fsp_name->base_name);
551 }
552
553 contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_SET_FILE_LEN);
554
555 return ret;
556 }
557
558 /****************************************************************************
559 A vfs fill sparse call.
560 Writes zeros from the end of file to len, if len is greater than EOF.
561 Used only by strict_sync.
562 Returns 0 on success, -1 on failure.
563 ****************************************************************************/
564
565 #define SPARSE_BUF_WRITE_SIZE (32*1024)
566
567 int vfs_fill_sparse(files_struct *fsp, SMB_OFF_T len)
568 {
569 int ret;
570 SMB_STRUCT_STAT st;
571 SMB_OFF_T offset;
572 size_t total;
573 size_t num_to_write;
574 ssize_t pwrite_ret;
575
576 ret = SMB_VFS_FSTAT(fsp, &st);
577 if (ret == -1) {
578 return ret;
579 }
580
581 if (len <= st.st_ex_size) {
582 return 0;
583 }
584
585 DEBUG(10,("vfs_fill_sparse: write zeros in file %s from len %.0f to "
586 "len %.0f (%.0f bytes)\n", fsp_str_dbg(fsp),
587 (double)st.st_ex_size, (double)len,
588 (double)(len - st.st_ex_size)));
589
590 contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_FILL_SPARSE);
591
592 flush_write_cache(fsp, SIZECHANGE_FLUSH);
593
594 if (!sparse_buf) {
595 sparse_buf = SMB_CALLOC_ARRAY(char, SPARSE_BUF_WRITE_SIZE);
596 if (!sparse_buf) {
597 errno = ENOMEM;
598 ret = -1;
599 goto out;
600 }
601 }
602
603 offset = st.st_ex_size;
604 num_to_write = len - st.st_ex_size;
605 total = 0;
606
607 while (total < num_to_write) {
608 size_t curr_write_size = MIN(SPARSE_BUF_WRITE_SIZE, (num_to_write - total));
609
610 pwrite_ret = SMB_VFS_PWRITE(fsp, sparse_buf, curr_write_size, offset + total);
611 if (pwrite_ret == -1) {
612 DEBUG(10,("vfs_fill_sparse: SMB_VFS_PWRITE for file "
613 "%s failed with error %s\n",
614 fsp_str_dbg(fsp), strerror(errno)));
615 ret = -1;
616 goto out;
617 }
618 if (pwrite_ret == 0) {
619 ret = 0;
620 goto out;
621 }
622
623 total += pwrite_ret;
624 }
625
626 set_filelen_write_cache(fsp, len);
627
628 ret = 0;
629 out:
630 contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_FILL_SPARSE);
631 return ret;
632 }
633
634 /****************************************************************************
635 Transfer some data (n bytes) between two file_struct's.
636 ****************************************************************************/
637
638 static ssize_t vfs_read_fn(void *file, void *buf, size_t len)
639 {
640 struct files_struct *fsp = (struct files_struct *)file;
641
642 return SMB_VFS_READ(fsp, buf, len);
643 }
644
645 static ssize_t vfs_write_fn(void *file, const void *buf, size_t len)
646 {
647 struct files_struct *fsp = (struct files_struct *)file;
648
649 return SMB_VFS_WRITE(fsp, buf, len);
650 }
651
652 SMB_OFF_T vfs_transfer_file(files_struct *in, files_struct *out, SMB_OFF_T n)
653 {
654 return transfer_file_internal((void *)in, (void *)out, n,
655 vfs_read_fn, vfs_write_fn);
656 }
657
658 /*******************************************************************
659 A vfs_readdir wrapper which just returns the file name.
660 ********************************************************************/
661
662 const char *vfs_readdirname(connection_struct *conn, void *p,
663 SMB_STRUCT_STAT *sbuf, char **talloced)
664 {
665 SMB_STRUCT_DIRENT *ptr= NULL;
666 const char *dname;
667 char *translated;
668 NTSTATUS status;
669
670 if (!p)
671 return(NULL);
672
673 ptr = SMB_VFS_READDIR(conn, (DIR *)p, sbuf);
674 if (!ptr)
675 return(NULL);
676
677 dname = ptr->d_name;
678
679
680 #ifdef NEXT2
681 if (telldir(p) < 0)
682 return(NULL);
683 #endif
684
685 #ifdef HAVE_BROKEN_READDIR_NAME
686 /* using /usr/ucb/cc is BAD */
687 dname = dname - 2;
688 #endif
689
690 status = SMB_VFS_TRANSLATE_NAME(conn, dname, vfs_translate_to_windows,
691 talloc_tos(), &translated);
692 if (NT_STATUS_EQUAL(status, NT_STATUS_NONE_MAPPED)) {
693 *talloced = NULL;
694 return dname;
695 }
696 *talloced = translated;
697 if (!NT_STATUS_IS_OK(status)) {
698 return NULL;
699 }
700 return translated;
701 }
702
703 /*******************************************************************
704 A wrapper for vfs_chdir().
705 ********************************************************************/
706
707 int vfs_ChDir(connection_struct *conn, const char *path)
708 {
709 int res;
710
711 if (!LastDir) {
712 LastDir = SMB_STRDUP("");
713 }
714
715 if (strcsequal(path,"."))
716 return(0);
717
718 if (*path == '/' && strcsequal(LastDir,path))
719 return(0);
720
721 DEBUG(4,("vfs_ChDir to %s\n",path));
722
723 res = SMB_VFS_CHDIR(conn,path);
724 if (!res) {
725 SAFE_FREE(LastDir);
726 LastDir = SMB_STRDUP(path);
727 }
728 return(res);
729 }
730
731 /*******************************************************************
732 Return the absolute current directory path - given a UNIX pathname.
733 Note that this path is returned in DOS format, not UNIX
734 format. Note this can be called with conn == NULL.
735 ********************************************************************/
736
737 char *vfs_GetWd(TALLOC_CTX *ctx, connection_struct *conn)
738 {
739 char s[PATH_MAX+1];
740 char *result = NULL;
741 DATA_BLOB cache_value;
742 struct file_id key;
743 struct smb_filename *smb_fname_dot = NULL;
744 struct smb_filename *smb_fname_full = NULL;
745 NTSTATUS status;
746
747 *s = 0;
748
749 if (!lp_getwd_cache()) {
750 goto nocache;
751 }
752
753 status = create_synthetic_smb_fname(ctx, ".", NULL, NULL,
754 &smb_fname_dot);
755 if (!NT_STATUS_IS_OK(status)) {
756 errno = map_errno_from_nt_status(status);
757 goto out;
758 }
759
760 if (SMB_VFS_STAT(conn, smb_fname_dot) == -1) {
761 /*
762 * Known to fail for root: the directory may be NFS-mounted
763 * and exported with root_squash (so has no root access).
764 */
765 DEBUG(1,("vfs_GetWd: couldn't stat \".\" error %s "
766 "(NFS problem ?)\n", strerror(errno) ));
767 goto nocache;
768 }
769
770 key = vfs_file_id_from_sbuf(conn, &smb_fname_dot->st);
771
772 if (!memcache_lookup(smbd_memcache(), GETWD_CACHE,
773 data_blob_const(&key, sizeof(key)),
774 &cache_value)) {
775 goto nocache;
776 }
777
778 SMB_ASSERT((cache_value.length > 0)
779 && (cache_value.data[cache_value.length-1] == '\0'));
780
781 status = create_synthetic_smb_fname(ctx, (char *)cache_value.data,
782 NULL, NULL, &smb_fname_full);
783 if (!NT_STATUS_IS_OK(status)) {
784 errno = map_errno_from_nt_status(status);
785 goto out;
786 }
787
788 if ((SMB_VFS_STAT(conn, smb_fname_full) == 0) &&
789 (smb_fname_dot->st.st_ex_dev == smb_fname_full->st.st_ex_dev) &&
790 (smb_fname_dot->st.st_ex_ino == smb_fname_full->st.st_ex_ino) &&
791 (S_ISDIR(smb_fname_dot->st.st_ex_mode))) {
792 /*
793 * Ok, we're done
794 */
795 result = talloc_strdup(ctx, smb_fname_full->base_name);
796 if (result == NULL) {
797 errno = ENOMEM;
798 }
799 goto out;
800 }
801
802 nocache:
803
804 /*
805 * We don't have the information to hand so rely on traditional
806 * methods. The very slow getcwd, which spawns a process on some
807 * systems, or the not quite so bad getwd.
808 */
809
810 if (!SMB_VFS_GETWD(conn,s)) {
811 DEBUG(0, ("vfs_GetWd: SMB_VFS_GETWD call failed: %s\n",
812 strerror(errno)));
813 goto out;
814 }
815
816 if (lp_getwd_cache() && VALID_STAT(smb_fname_dot->st)) {
817 key = vfs_file_id_from_sbuf(conn, &smb_fname_dot->st);
818
819 memcache_add(smbd_memcache(), GETWD_CACHE,
820 data_blob_const(&key, sizeof(key)),
821 data_blob_const(s, strlen(s)+1));
822 }
823
824 result = talloc_strdup(ctx, s);
825 if (result == NULL) {
826 errno = ENOMEM;
827 }
828
829 out:
830 TALLOC_FREE(smb_fname_dot);
831 TALLOC_FREE(smb_fname_full);
832 return result;
833 }
834
835 /*******************************************************************
836 Reduce a file name, removing .. elements and checking that
837 it is below dir in the heirachy. This uses realpath.
838 ********************************************************************/
839
840 NTSTATUS check_reduced_name(connection_struct *conn, const char *fname)
841 {
842 #ifdef REALPATH_TAKES_NULL
843 bool free_resolved_name = True;
844 #else
845 char resolved_name_buf[PATH_MAX+1];
846 bool free_resolved_name = False;
847 #endif
848 char *resolved_name = NULL;
849 char *p = NULL;
850
851 DEBUG(3,("check_reduced_name [%s] [%s]\n", fname, conn->connectpath));
852
853 #ifdef REALPATH_TAKES_NULL
854 resolved_name = SMB_VFS_REALPATH(conn,fname,NULL);
855 #else
856 resolved_name = SMB_VFS_REALPATH(conn,fname,resolved_name_buf);
857 #endif
858
859 if (!resolved_name) {
860 switch (errno) {
861 case ENOTDIR:
862 DEBUG(3,("check_reduced_name: Component not a "
863 "directory in getting realpath for "
864 "%s\n", fname));
865 return NT_STATUS_OBJECT_PATH_NOT_FOUND;
866 case ENOENT:
867 {
868 TALLOC_CTX *ctx = talloc_tos();
869 char *tmp_fname = NULL;
870 char *last_component = NULL;
871 /* Last component didn't exist. Remove it and try and canonicalise the directory. */
872
873 tmp_fname = talloc_strdup(ctx, fname);
874 if (!tmp_fname) {
875 return NT_STATUS_NO_MEMORY;
876 }
877 p = strrchr_m(tmp_fname, '/');
878 if (p) {
879 *p++ = '\0';
880 last_component = p;
881 } else {
882 last_component = tmp_fname;
883 tmp_fname = talloc_strdup(ctx,
884 ".");
885 if (!tmp_fname) {
886 return NT_STATUS_NO_MEMORY;
887 }
888 }
889
890 #ifdef REALPATH_TAKES_NULL
891 resolved_name = SMB_VFS_REALPATH(conn,tmp_fname,NULL);
892 #else
893 resolved_name = SMB_VFS_REALPATH(conn,tmp_fname,resolved_name_buf);
894 #endif
895 if (!resolved_name) {
896 NTSTATUS status = map_nt_error_from_unix(errno);
897
898 if (errno == ENOENT || errno == ENOTDIR) {
899 status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
900 }
901
902 DEBUG(3,("check_reduce_named: "
903 "couldn't get realpath for "
904 "%s (%s)\n",
905 fname,
906 nt_errstr(status)));
907 return status;
908 }
909 tmp_fname = talloc_asprintf(ctx,
910 "%s/%s",
911 resolved_name,
912 last_component);
913 if (!tmp_fname) {
914 return NT_STATUS_NO_MEMORY;
915 }
916 #ifdef REALPATH_TAKES_NULL
917 SAFE_FREE(resolved_name);
918 resolved_name = SMB_STRDUP(tmp_fname);
919 if (!resolved_name) {
920 DEBUG(0, ("check_reduced_name: malloc "
921 "fail for %s\n", tmp_fname));
922 return NT_STATUS_NO_MEMORY;
923 }
924 #else
925 safe_strcpy(resolved_name_buf, tmp_fname, PATH_MAX);
926 resolved_name = resolved_name_buf;
927 #endif
928 break;
929 }
930 default:
931 DEBUG(1,("check_reduced_name: couldn't get "
932 "realpath for %s\n", fname));
933 return map_nt_error_from_unix(errno);
934 }
935 }
936
937 DEBUG(10,("check_reduced_name realpath [%s] -> [%s]\n", fname,
938 resolved_name));
939
940 if (*resolved_name != '/') {
941 DEBUG(0,("check_reduced_name: realpath doesn't return "
942 "absolute paths !\n"));
943 if (free_resolved_name) {
944 SAFE_FREE(resolved_name);
945 }
946 return NT_STATUS_OBJECT_NAME_INVALID;
947 }
948
949 /* Check for widelinks allowed. */
950 if (!lp_widelinks(SNUM(conn))) {
951 const char *conn_rootdir;
952
953 conn_rootdir = SMB_VFS_CONNECTPATH(conn, fname);
954 if (conn_rootdir == NULL) {
955 DEBUG(2, ("check_reduced_name: Could not get "
956 "conn_rootdir\n"));
957 if (free_resolved_name) {
958 SAFE_FREE(resolved_name);
959 }
960 return NT_STATUS_ACCESS_DENIED;
961 }
962
963 if (strncmp(conn_rootdir, resolved_name,
964 strlen(conn_rootdir)) != 0) {
965 DEBUG(2, ("check_reduced_name: Bad access "
966 "attempt: %s is a symlink outside the "
967 "share path\n", fname));
968 if (free_resolved_name) {
969 SAFE_FREE(resolved_name);
970 }
971 return NT_STATUS_ACCESS_DENIED;
972 }
973 }
974
975 /* Check if we are allowing users to follow symlinks */
976 /* Patch from David Clerc <David.Clerc@cui.unige.ch>
977 University of Geneva */
978
979 #ifdef S_ISLNK
980 if (!lp_symlinks(SNUM(conn))) {
981 struct smb_filename *smb_fname = NULL;
982 NTSTATUS status;
983
984 status = create_synthetic_smb_fname(talloc_tos(), fname, NULL,
985 NULL, &smb_fname);
986 if (!NT_STATUS_IS_OK(status)) {
987 if (free_resolved_name) {
988 SAFE_FREE(resolved_name);
989 }
990 return status;
991 }
992
993 if ( (SMB_VFS_LSTAT(conn, smb_fname) != -1) &&
994 (S_ISLNK(smb_fname->st.st_ex_mode)) ) {
995 if (free_resolved_name) {
996 SAFE_FREE(resolved_name);
997 }
998 DEBUG(3,("check_reduced_name: denied: file path name "
999 "%s is a symlink\n",resolved_name));
1000 TALLOC_FREE(smb_fname);
1001 return NT_STATUS_ACCESS_DENIED;
1002 }
1003 TALLOC_FREE(smb_fname);
1004 }
1005 #endif
1006
1007 DEBUG(3,("check_reduced_name: %s reduced to %s\n", fname,
1008 resolved_name));
1009 if (free_resolved_name) {
1010 SAFE_FREE(resolved_name);
1011 }
1012 return NT_STATUS_OK;
1013 }
1014
1015 /**
1016 * XXX: This is temporary and there should be no callers of this once
1017 * smb_filename is plumbed through all path based operations.
1018 */
1019 int vfs_stat_smb_fname(struct connection_struct *conn, const char *fname,
1020 SMB_STRUCT_STAT *psbuf)
1021 {
1022 struct smb_filename *smb_fname = NULL;
1023 NTSTATUS status;
1024 int ret;
1025
1026 status = create_synthetic_smb_fname_split(talloc_tos(), fname, NULL,
1027 &smb_fname);
1028 if (!NT_STATUS_IS_OK(status)) {
1029 errno = map_errno_from_nt_status(status);
1030 return -1;
1031 }
1032
1033 if (lp_posix_pathnames()) {
1034 ret = SMB_VFS_LSTAT(conn, smb_fname);
1035 } else {
1036 ret = SMB_VFS_STAT(conn, smb_fname);
1037 }
1038
1039 if (ret != -1) {
1040 *psbuf = smb_fname->st;
1041 }
1042
1043 TALLOC_FREE(smb_fname);
1044 return ret;
1045 }
1046
1047 /**
1048 * XXX: This is temporary and there should be no callers of this once
1049 * smb_filename is plumbed through all path based operations.
1050 */
1051 int vfs_lstat_smb_fname(struct connection_struct *conn, const char *fname,
1052 SMB_STRUCT_STAT *psbuf)
1053 {
1054 struct smb_filename *smb_fname = NULL;
1055 NTSTATUS status;
1056 int ret;
1057
1058 status = create_synthetic_smb_fname_split(talloc_tos(), fname, NULL,
1059 &smb_fname);
1060 if (!NT_STATUS_IS_OK(status)) {
1061 errno = map_errno_from_nt_status(status);
1062 return -1;
1063 }
1064
1065 ret = SMB_VFS_LSTAT(conn, smb_fname);
1066 if (ret != -1) {
1067 *psbuf = smb_fname->st;
1068 }
1069
1070 TALLOC_FREE(smb_fname);
1071 return ret;
1072 }
1073
1074 /**
1075 * Ensure LSTAT is called for POSIX paths.
1076 */
1077
1078 NTSTATUS vfs_stat_fsp(files_struct *fsp)
1079 {
1080 int ret;
1081
1082 if(fsp->is_directory || fsp->fh->fd == -1) {
1083 if (fsp->posix_open) {
1084 ret = SMB_VFS_LSTAT(fsp->conn, fsp->fsp_name);
1085 } else {
1086 ret = SMB_VFS_STAT(fsp->conn, fsp->fsp_name);
1087 }
1088 if (ret == -1) {
1089 return map_nt_error_from_unix(errno);
1090 }
1091 } else {
1092 if(SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st) != 0) {
1093 return map_nt_error_from_unix(errno);
1094 }
1095 }
1096 return NT_STATUS_OK;
1097 }
1098
1099 /*
1100 generate a file_id from a stat structure
1101 */
1102 struct file_id vfs_file_id_from_sbuf(connection_struct *conn, const SMB_STRUCT_STAT *sbuf)
1103 {
1104 return SMB_VFS_FILE_ID_CREATE(conn, sbuf);
1105 }
1106
1107 int smb_vfs_call_connect(struct vfs_handle_struct *handle,
1108 const char *service, const char *user)
1109 {
1110 VFS_FIND(connect_fn);
1111 return handle->fns->connect_fn(handle, service, user);
1112 }
1113
1114 void smb_vfs_call_disconnect(struct vfs_handle_struct *handle)
1115 {
1116 VFS_FIND(disconnect);
1117 handle->fns->disconnect(handle);
1118 }
1119
1120 uint64_t smb_vfs_call_disk_free(struct vfs_handle_struct *handle,
1121 const char *path, bool small_query,
1122 uint64_t *bsize, uint64_t *dfree,
1123 uint64_t *dsize)
1124 {
1125 VFS_FIND(disk_free);
1126 return handle->fns->disk_free(handle, path, small_query, bsize, dfree,
1127 dsize);
1128 }
1129
1130 int smb_vfs_call_get_quota(struct vfs_handle_struct *handle,
1131 enum SMB_QUOTA_TYPE qtype, unid_t id,
1132 SMB_DISK_QUOTA *qt)
1133 {
1134 VFS_FIND(get_quota);
1135 return handle->fns->get_quota(handle, qtype, id, qt);
1136 }
1137
1138 int smb_vfs_call_set_quota(struct vfs_handle_struct *handle,
1139 enum SMB_QUOTA_TYPE qtype, unid_t id,
1140 SMB_DISK_QUOTA *qt)
1141 {
1142 VFS_FIND(set_quota);
1143 return handle->fns->set_quota(handle, qtype, id, qt);
1144 }
1145
1146 int smb_vfs_call_get_shadow_copy_data(struct vfs_handle_struct *handle,
1147 struct files_struct *fsp,
1148 SHADOW_COPY_DATA *shadow_copy_data,
1149 bool labels)
1150 {
1151 VFS_FIND(get_shadow_copy_data);
1152 return handle->fns->get_shadow_copy_data(handle, fsp, shadow_copy_data,
1153 labels);
1154 }
1155 int smb_vfs_call_statvfs(struct vfs_handle_struct *handle, const char *path,
1156 struct vfs_statvfs_struct *statbuf)
1157 {
1158 VFS_FIND(statvfs);
1159 return handle->fns->statvfs(handle, path, statbuf);
1160 }
1161
1162 uint32_t smb_vfs_call_fs_capabilities(struct vfs_handle_struct *handle,
1163 enum timestamp_set_resolution *p_ts_res)
1164 {
1165 VFS_FIND(fs_capabilities);
1166 return handle->fns->fs_capabilities(handle, p_ts_res);
1167 }
1168
1169 SMB_STRUCT_DIR *smb_vfs_call_opendir(struct vfs_handle_struct *handle,
1170 const char *fname, const char *mask,
1171 uint32 attributes)
1172 {
1173 VFS_FIND(opendir);
1174 return handle->fns->opendir(handle, fname, mask, attributes);
1175 }
1176
1177 SMB_STRUCT_DIRENT *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
1178 SMB_STRUCT_DIR *dirp,
1179 SMB_STRUCT_STAT *sbuf)
1180 {
1181 VFS_FIND(readdir);
1182 return handle->fns->readdir(handle, dirp, sbuf);
1183 }
1184
1185 void smb_vfs_call_seekdir(struct vfs_handle_struct *handle,
1186 SMB_STRUCT_DIR *dirp, long offset)
1187 {
1188 VFS_FIND(seekdir);
1189 handle->fns->seekdir(handle, dirp, offset);
1190 }
1191
1192 long smb_vfs_call_telldir(struct vfs_handle_struct *handle,
1193 SMB_STRUCT_DIR *dirp)
1194 {
1195 VFS_FIND(telldir);
1196 return handle->fns->telldir(handle, dirp);
1197 }
1198
1199 void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
1200 SMB_STRUCT_DIR *dirp)
1201 {
1202 VFS_FIND(rewind_dir);
1203 handle->fns->rewind_dir(handle, dirp);
1204 }
1205
1206 int smb_vfs_call_mkdir(struct vfs_handle_struct *handle, const char *path,
1207 mode_t mode)
1208 {
1209 VFS_FIND(mkdir);
1210 return handle->fns->mkdir(handle, path, mode);
1211 }
1212
1213 int smb_vfs_call_rmdir(struct vfs_handle_struct *handle, const char *path)
1214 {
1215 VFS_FIND(rmdir);
1216 return handle->fns->rmdir(handle, path);
1217 }
1218
1219 int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
1220 SMB_STRUCT_DIR *dir)
1221 {
1222 VFS_FIND(closedir);
1223 return handle->fns->closedir(handle, dir);
1224 }
1225
1226 void smb_vfs_call_init_search_op(struct vfs_handle_struct *handle,
1227 SMB_STRUCT_DIR *dirp)
1228 {
1229 VFS_FIND(init_search_op);
1230 handle->fns->init_search_op(handle, dirp);
1231 }
1232
1233 int smb_vfs_call_open(struct vfs_handle_struct *handle,
1234 struct smb_filename *smb_fname, struct files_struct *fsp,
1235 int flags, mode_t mode)
1236 {
1237 VFS_FIND(open);
1238 return handle->fns->open(handle, smb_fname, fsp, flags, mode);
1239 }
1240
1241 NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
1242 struct smb_request *req,
1243 uint16_t root_dir_fid,
1244 struct smb_filename *smb_fname,
1245 uint32_t access_mask,
1246 uint32_t share_access,
1247 uint32_t create_disposition,
1248 uint32_t create_options,
1249 uint32_t file_attributes,
1250 uint32_t oplock_request,
1251 uint64_t allocation_size,
1252 struct security_descriptor *sd,
1253 struct ea_list *ea_list,
1254 files_struct **result,
1255 int *pinfo)
1256 {
1257 VFS_FIND(create_file);
1258 return handle->fns->create_file(
1259 handle, req, root_dir_fid, smb_fname, access_mask,
1260 share_access, create_disposition, create_options,
1261 file_attributes, oplock_request, allocation_size, sd, ea_list,
1262 result, pinfo);
1263 }
1264
1265 int smb_vfs_call_close_fn(struct vfs_handle_struct *handle,
1266 struct files_struct *fsp)
1267 {
1268 VFS_FIND(close_fn);
1269 return handle->fns->close_fn(handle, fsp);
1270 }
1271
1272 ssize_t smb_vfs_call_vfs_read(struct vfs_handle_struct *handle,
1273 struct files_struct *fsp, void *data, size_t n)
1274 {
1275 VFS_FIND(vfs_read);
1276 return handle->fns->vfs_read(handle, fsp, data, n);
1277 }
1278
1279 ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
1280 struct files_struct *fsp, void *data, size_t n,
1281 SMB_OFF_T offset)
1282 {
1283 VFS_FIND(pread);
1284 return handle->fns->pread(handle, fsp, data, n, offset);
1285 }
1286
1287 ssize_t smb_vfs_call_write(struct vfs_handle_struct *handle,
1288 struct files_struct *fsp, const void *data,
1289 size_t n)
1290 {
1291 VFS_FIND(write);
1292 return handle->fns->write(handle, fsp, data, n);
1293 }
1294
1295 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
1296 struct files_struct *fsp, const void *data,
1297 size_t n, SMB_OFF_T offset)
1298 {
1299 VFS_FIND(pwrite);
1300 return handle->fns->pwrite(handle, fsp, data, n, offset);
1301 }
1302
1303 SMB_OFF_T smb_vfs_call_lseek(struct vfs_handle_struct *handle,
1304 struct files_struct *fsp, SMB_OFF_T offset,
1305 int whence)
1306 {
1307 VFS_FIND(lseek);
1308 return handle->fns->lseek(handle, fsp, offset, whence);
1309 }
1310
1311 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
1312 files_struct *fromfsp, const DATA_BLOB *header,
1313 SMB_OFF_T offset, size_t count)
1314 {
1315 VFS_FIND(sendfile);
1316 return handle->fns->sendfile(handle, tofd, fromfsp, header, offset,
1317 count);
1318 }
1319
1320 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
1321 files_struct *tofsp, SMB_OFF_T offset,
1322 size_t count)
1323 {
1324 VFS_FIND(recvfile);
1325 return handle->fns->recvfile(handle, fromfd, tofsp, offset, count);
1326 }
1327
1328 int smb_vfs_call_rename(struct vfs_handle_struct *handle,
1329 const struct smb_filename *smb_fname_src,
1330 const struct smb_filename *smb_fname_dst)
1331 {
1332 VFS_FIND(rename);
1333 return handle->fns->rename(handle, smb_fname_src, smb_fname_dst);
1334 }
1335
1336 int smb_vfs_call_fsync(struct vfs_handle_struct *handle,
1337 struct files_struct *fsp)
1338 {
1339 VFS_FIND(fsync);
1340 return handle->fns->fsync(handle, fsp);
1341 }
1342
1343 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
1344 struct smb_filename *smb_fname)
1345 {
1346 VFS_FIND(stat);
1347 return handle->fns->stat(handle, smb_fname);
1348 }
1349
1350 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
1351 struct files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1352 {
1353 VFS_FIND(fstat);
1354 return handle->fns->fstat(handle, fsp, sbuf);
1355 }
1356
1357 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
1358 struct smb_filename *smb_filename)
1359 {
1360 VFS_FIND(lstat);
1361 return handle->fns->lstat(handle, smb_filename);
1362 }
1363
1364 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
1365 struct files_struct *fsp,
1366 const SMB_STRUCT_STAT *sbuf)
1367 {
1368 VFS_FIND(get_alloc_size);
1369 return handle->fns->get_alloc_size(handle, fsp, sbuf);
1370 }
1371
1372 int smb_vfs_call_unlink(struct vfs_handle_struct *handle,
1373 const struct smb_filename *smb_fname)
1374 {
1375 VFS_FIND(unlink);
1376 return handle->fns->unlink(handle, smb_fname);
1377 }
1378
1379 int smb_vfs_call_chmod(struct vfs_handle_struct *handle, const char *path,
1380 mode_t mode)
1381 {
1382 VFS_FIND(chmod);
1383 return handle->fns->chmod(handle, path, mode);
1384 }
1385
1386 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
1387 struct files_struct *fsp, mode_t mode)
1388 {
1389 VFS_FIND(fchmod);
1390 return handle->fns->fchmod(handle, fsp, mode);
1391 }
1392
1393 int smb_vfs_call_chown(struct vfs_handle_struct *handle, const char *path,
1394 uid_t uid, gid_t gid)
1395 {
1396 VFS_FIND(chown);
1397 return handle->fns->chown(handle, path, uid, gid);
1398 }
1399
1400 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
1401 struct files_struct *fsp, uid_t uid, gid_t gid)
1402 {
1403 VFS_FIND(fchown);
1404 return handle->fns->fchown(handle, fsp, uid, gid);
1405 }
1406
1407 int smb_vfs_call_lchown(struct vfs_handle_struct *handle, const char *path,
1408 uid_t uid, gid_t gid)
1409 {
1410 VFS_FIND(lchown);
1411 return handle->fns->lchown(handle, path, uid, gid);
1412 }
1413
1414 int smb_vfs_call_chdir(struct vfs_handle_struct *handle, const char *path)
1415 {
1416 VFS_FIND(chdir);
1417 return handle->fns->chdir(handle, path);
1418 }
1419
1420 char *smb_vfs_call_getwd(struct vfs_handle_struct *handle, char *buf)
1421 {
1422 VFS_FIND(getwd);
1423 return handle->fns->getwd(handle, buf);
1424 }
1425
1426 int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
1427 const struct smb_filename *smb_fname,
1428 struct smb_file_time *ft)
1429 {
1430 VFS_FIND(ntimes);
1431 return handle->fns->ntimes(handle, smb_fname, ft);
1432 }
1433
1434 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
1435 struct files_struct *fsp, SMB_OFF_T offset)
1436 {
1437 VFS_FIND(ftruncate);
1438 return handle->fns->ftruncate(handle, fsp, offset);
1439 }
1440
1441 int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
1442 struct files_struct *fsp, uint32 share_mode,
1443 uint32_t access_mask)
1444 {
1445 VFS_FIND(kernel_flock);
1446 return handle->fns->kernel_flock(handle, fsp, share_mode,
1447 access_mask);
1448 }
1449
1450 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
1451 struct files_struct *fsp, int leasetype)
1452 {
1453 VFS_FIND(linux_setlease);
1454 return handle->fns->linux_setlease(handle, fsp, leasetype);
1455 }
1456
1457 int smb_vfs_call_symlink(struct vfs_handle_struct *handle, const char *oldpath,
1458 const char *newpath)
1459 {
1460 VFS_FIND(symlink);
1461 return handle->fns->symlink(handle, oldpath, newpath);
1462 }
1463
1464 int smb_vfs_call_vfs_readlink(struct vfs_handle_struct *handle,
1465 const char *path, char *buf, size_t bufsiz)
1466 {
1467 VFS_FIND(vfs_readlink);
1468 return handle->fns->vfs_readlink(handle, path, buf, bufsiz);
1469 }
1470
1471 int smb_vfs_call_link(struct vfs_handle_struct *handle, const char *oldpath,
1472 const char *newpath)
1473 {
1474 VFS_FIND(link);
1475 return handle->fns->link(handle, oldpath, newpath);
1476 }
1477
1478 int smb_vfs_call_mknod(struct vfs_handle_struct *handle, const char *path,
1479 mode_t mode, SMB_DEV_T dev)
1480 {
1481 VFS_FIND(mknod);
1482 return handle->fns->mknod(handle, path, mode, dev);
1483 }
1484
1485 char *smb_vfs_call_realpath(struct vfs_handle_struct *handle,
1486 const char *path, char *resolved_path)
1487 {
1488 VFS_FIND(realpath);
1489 return handle->fns->realpath(handle, path, resolved_path);
1490 }
1491
1492 NTSTATUS smb_vfs_call_notify_watch(struct vfs_handle_struct *handle,
1493 struct sys_notify_context *ctx,
1494 struct notify_entry *e,
1495 void (*callback)(struct sys_notify_context *ctx,
1496 void *private_data,
1497 struct notify_event *ev),
1498 void *private_data, void *handle_p)
1499 {
1500 VFS_FIND(notify_watch);
1501 return handle->fns->notify_watch(handle, ctx, e, callback,
1502 private_data, handle_p);
1503 }
1504
1505 int smb_vfs_call_chflags(struct vfs_handle_struct *handle, const char *path,
1506 unsigned int flags)
1507 {
1508 VFS_FIND(chflags);
1509 return handle->fns->chflags(handle, path, flags);
1510 }
1511
1512 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
1513 const SMB_STRUCT_STAT *sbuf)
1514 {
1515 VFS_FIND(file_id_create);
1516 return handle->fns->file_id_create(handle, sbuf);
1517 }
1518
1519 NTSTATUS smb_vfs_call_streaminfo(struct vfs_handle_struct *handle,
1520 struct files_struct *fsp,
1521 const char *fname,
1522 TALLOC_CTX *mem_ctx,
1523 unsigned int *num_streams,
1524 struct stream_struct **streams)
1525 {
1526 VFS_FIND(streaminfo);
1527 return handle->fns->streaminfo(handle, fsp, fname, mem_ctx,
1528 num_streams, streams);
1529 }
1530
1531 int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
1532 const char *path, const char *name,
1533 TALLOC_CTX *mem_ctx, char **found_name)
1534 {
1535 VFS_FIND(get_real_filename);
1536 return handle->fns->get_real_filename(handle, path, name, mem_ctx,
1537 found_name);
1538 }
1539
1540 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
1541 const char *filename)
1542 {
1543 VFS_FIND(connectpath);
1544 return handle->fns->connectpath(handle, filename);
1545 }
1546
1547 bool smb_vfs_call_strict_lock(struct vfs_handle_struct *handle,
1548 struct files_struct *fsp,
1549 struct lock_struct *plock)
1550 {
1551 VFS_FIND(strict_lock);
1552 return handle->fns->strict_lock(handle, fsp, plock);
1553 }
1554
1555 void smb_vfs_call_strict_unlock(struct vfs_handle_struct *handle,
1556 struct files_struct *fsp,
1557 struct lock_struct *plock)
1558 {
1559 VFS_FIND(strict_unlock);
1560 handle->fns->strict_unlock(handle, fsp, plock);
1561 }
1562
1563 NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
1564 const char *name,
1565 enum vfs_translate_direction direction,
1566 TALLOC_CTX *mem_ctx,
1567 char **mapped_name)
1568 {
1569 VFS_FIND(translate_name);
1570 return handle->fns->translate_name(handle, name, direction, mem_ctx,
1571 mapped_name);
1572 }
1573
1574 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
1575 struct files_struct *fsp,
1576 uint32 security_info,
1577 struct security_descriptor **ppdesc)
1578 {
1579 VFS_FIND(fget_nt_acl);
1580 return handle->fns->fget_nt_acl(handle, fsp, security_info,
1581 ppdesc);
1582 }
1583
1584 NTSTATUS smb_vfs_call_get_nt_acl(struct vfs_handle_struct *handle,
1585 const char *name,
1586 uint32 security_info,
1587 struct security_descriptor **ppdesc)
1588 {
1589 VFS_FIND(get_nt_acl);
1590 return handle->fns->get_nt_acl(handle, name, security_info, ppdesc);
1591 }
1592
1593 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
1594 struct files_struct *fsp,
1595 uint32 security_info_sent,
1596 const struct security_descriptor *psd)
1597 {
1598 VFS_FIND(fset_nt_acl);
1599 return handle->fns->fset_nt_acl(handle, fsp, security_info_sent, psd);
1600 }
1601
1602 int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle, const char *name,
1603 mode_t mode)
1604 {
1605 VFS_FIND(chmod_acl);
1606 return handle->fns->chmod_acl(handle, name, mode);
1607 }
1608
1609 int smb_vfs_call_fchmod_acl(struct vfs_handle_struct *handle,
1610 struct files_struct *fsp, mode_t mode)
1611 {
1612 VFS_FIND(fchmod_acl);
1613 return handle->fns->fchmod_acl(handle, fsp, mode);
1614 }
1615
1616 int smb_vfs_call_sys_acl_get_entry(struct vfs_handle_struct *handle,
1617 SMB_ACL_T theacl, int entry_id,
1618 SMB_ACL_ENTRY_T *entry_p)
1619 {
1620 VFS_FIND(sys_acl_get_entry);
1621 return handle->fns->sys_acl_get_entry(handle, theacl, entry_id,
1622 entry_p);
1623 }
1624
1625 int smb_vfs_call_sys_acl_get_tag_type(struct vfs_handle_struct *handle,
1626 SMB_ACL_ENTRY_T entry_d,
1627 SMB_ACL_TAG_T *tag_type_p)
1628 {
1629 VFS_FIND(sys_acl_get_tag_type);
1630 return handle->fns->sys_acl_get_tag_type(handle, entry_d, tag_type_p);
1631 }
1632
1633 int smb_vfs_call_sys_acl_get_permset(struct vfs_handle_struct *handle,
1634 SMB_ACL_ENTRY_T entry_d,
1635 SMB_ACL_PERMSET_T *permset_p)
1636 {
1637 VFS_FIND(sys_acl_get_permset);
1638 return handle->fns->sys_acl_get_permset(handle, entry_d, permset_p);
1639 }
1640
1641 void * smb_vfs_call_sys_acl_get_qualifier(struct vfs_handle_struct *handle,
1642 SMB_ACL_ENTRY_T entry_d)
1643 {
1644 VFS_FIND(sys_acl_get_qualifier);
1645 return handle->fns->sys_acl_get_qualifier(handle, entry_d);
1646 }
1647
1648 SMB_ACL_T smb_vfs_call_sys_acl_get_file(struct vfs_handle_struct *handle,
1649 const char *path_p,
1650 SMB_ACL_TYPE_T type)
1651 {
1652 VFS_FIND(sys_acl_get_file);
1653 return handle->fns->sys_acl_get_file(handle, path_p, type);
1654 }
1655
1656 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
1657 struct files_struct *fsp)
1658 {
1659 VFS_FIND(sys_acl_get_fd);
1660 return handle->fns->sys_acl_get_fd(handle, fsp);
1661 }
1662
1663 int smb_vfs_call_sys_acl_clear_perms(struct vfs_handle_struct *handle,
1664 SMB_ACL_PERMSET_T permset)
1665 {
1666 VFS_FIND(sys_acl_clear_perms);
1667 return handle->fns->sys_acl_clear_perms(handle, permset);
1668 }
1669
1670 int smb_vfs_call_sys_acl_add_perm(struct vfs_handle_struct *handle,
1671 SMB_ACL_PERMSET_T permset,
1672 SMB_ACL_PERM_T perm)
1673 {
1674 VFS_FIND(sys_acl_add_perm);
1675 return handle->fns->sys_acl_add_perm(handle, permset, perm);
1676 }
1677
1678 char * smb_vfs_call_sys_acl_to_text(struct vfs_handle_struct *handle,
1679 SMB_ACL_T theacl, ssize_t *plen)
1680 {
1681 VFS_FIND(sys_acl_to_text);
1682 return handle->fns->sys_acl_to_text(handle, theacl, plen);
1683 }
1684
1685 SMB_ACL_T smb_vfs_call_sys_acl_init(struct vfs_handle_struct *handle,
1686 int count)
1687 {
1688 VFS_FIND(sys_acl_init);
1689 return handle->fns->sys_acl_init(handle, count);
1690 }
1691
1692 int smb_vfs_call_sys_acl_create_entry(struct vfs_handle_struct *handle,
1693 SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry)
1694 {
1695 VFS_FIND(sys_acl_create_entry);
1696 return handle->fns->sys_acl_create_entry(handle, pacl, pentry);
1697 }
1698
1699 int smb_vfs_call_sys_acl_set_tag_type(struct vfs_handle_struct *handle,
1700 SMB_ACL_ENTRY_T entry,
1701 SMB_ACL_TAG_T tagtype)
1702 {
1703 VFS_FIND(sys_acl_set_tag_type);
1704 return handle->fns->sys_acl_set_tag_type(handle, entry, tagtype);
1705 }
1706
1707 int smb_vfs_call_sys_acl_set_qualifier(struct vfs_handle_struct *handle,
1708 SMB_ACL_ENTRY_T entry, void *qual)
1709 {
1710 VFS_FIND(sys_acl_set_qualifier);
1711 return handle->fns->sys_acl_set_qualifier(handle, entry, qual);
1712 }
1713
1714 int smb_vfs_call_sys_acl_set_permset(struct vfs_handle_struct *handle,
1715 SMB_ACL_ENTRY_T entry,
1716 SMB_ACL_PERMSET_T permset)
1717 {
1718 VFS_FIND(sys_acl_set_permset);
1719 return handle->fns->sys_acl_set_permset(handle, entry, permset);
1720 }
1721
1722 int smb_vfs_call_sys_acl_valid(struct vfs_handle_struct *handle,
1723 SMB_ACL_T theacl)
1724 {
1725 VFS_FIND(sys_acl_valid);
1726 return handle->fns->sys_acl_valid(handle, theacl);
1727 }
1728
1729 int smb_vfs_call_sys_acl_set_file(struct vfs_handle_struct *handle,
1730 const char *name, SMB_ACL_TYPE_T acltype,
1731 SMB_ACL_T theacl)
1732 {
1733 VFS_FIND(sys_acl_set_file);
1734 return handle->fns->sys_acl_set_file(handle, name, acltype, theacl);
1735 }
1736
1737 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
1738 struct files_struct *fsp, SMB_ACL_T theacl)
1739 {
1740 VFS_FIND(sys_acl_set_fd);
1741 return handle->fns->sys_acl_set_fd(handle, fsp, theacl);
1742 }
1743
1744 int smb_vfs_call_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
1745 const char *path)
1746 {
1747 VFS_FIND(sys_acl_delete_def_file);
1748 return handle->fns->sys_acl_delete_def_file(handle, path);
1749 }
1750
1751 int smb_vfs_call_sys_acl_get_perm(struct vfs_handle_struct *handle,
1752 SMB_ACL_PERMSET_T permset,
1753 SMB_ACL_PERM_T perm)
1754 {
1755 VFS_FIND(sys_acl_get_perm);
1756 return handle->fns->sys_acl_get_perm(handle, permset, perm);
1757 }
1758
1759 int smb_vfs_call_sys_acl_free_text(struct vfs_handle_struct *handle,
1760 char *text)
1761 {
1762 VFS_FIND(sys_acl_free_text);
1763 return handle->fns->sys_acl_free_text(handle, text);
1764 }
1765
1766 int smb_vfs_call_sys_acl_free_acl(struct vfs_handle_struct *handle,
1767 SMB_ACL_T posix_acl)
1768 {
1769 VFS_FIND(sys_acl_free_acl);
1770 return handle->fns->sys_acl_free_acl(handle, posix_acl);
1771 }
1772
1773 int smb_vfs_call_sys_acl_free_qualifier(struct vfs_handle_struct *handle,
1774 void *qualifier, SMB_ACL_TAG_T tagtype)
1775 {
1776 VFS_FIND(sys_acl_free_qualifier);
1777 return handle->fns->sys_acl_free_qualifier(handle, qualifier, tagtype);
1778 }
1779
1780 ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
1781 const char *path, const char *name, void *value,
1782 size_t size)
1783 {
1784 VFS_FIND(getxattr);
1785 return handle->fns->getxattr(handle, path, name, value, size);
1786 }
1787
1788 ssize_t smb_vfs_call_lgetxattr(struct vfs_handle_struct *handle,
1789 const char *path, const char *name, void *value,
1790 size_t size)
1791 {
1792 VFS_FIND(lgetxattr);
1793 return handle->fns->lgetxattr(handle, path, name, value, size);
1794 }
1795
1796 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
1797 struct files_struct *fsp, const char *name,
1798 void *value, size_t size)
1799 {
1800 VFS_FIND(fgetxattr);
1801 return handle->fns->fgetxattr(handle, fsp, name, value, size);
1802 }
1803
1804 ssize_t smb_vfs_call_listxattr(struct vfs_handle_struct *handle,
1805 const char *path, char *list, size_t size)
1806 {
1807 VFS_FIND(listxattr);
1808 return handle->fns->listxattr(handle, path, list, size);
1809 }
1810
1811 ssize_t smb_vfs_call_llistxattr(struct vfs_handle_struct *handle,
1812 const char *path, char *list, size_t size)
1813 {
1814 VFS_FIND(llistxattr);
1815 return handle->fns->llistxattr(handle, path, list, size);
1816 }
1817
1818 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
1819 struct files_struct *fsp, char *list,
1820 size_t size)
1821 {
1822 VFS_FIND(flistxattr);
1823 return handle->fns->flistxattr(handle, fsp, list, size);
1824 }
1825
1826 int smb_vfs_call_removexattr(struct vfs_handle_struct *handle,
1827 const char *path, const char *name)
1828 {
1829 VFS_FIND(removexattr);
1830 return handle->fns->removexattr(handle, path, name);
1831 }
1832
1833 int smb_vfs_call_lremovexattr(struct vfs_handle_struct *handle,
1834 const char *path, const char *name)
1835 {
1836 VFS_FIND(lremovexattr);
1837 return handle->fns->lremovexattr(handle, path, name);
1838 }
1839
1840 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
1841 struct files_struct *fsp, const char *name)
1842 {
1843 VFS_FIND(fremovexattr);
1844 return handle->fns->fremovexattr(handle, fsp, name);
1845 }
1846
1847 int smb_vfs_call_setxattr(struct vfs_handle_struct *handle, const char *path,
1848 const char *name, const void *value, size_t size,
1849 int flags)
1850 {
1851 VFS_FIND(setxattr);
1852 return handle->fns->setxattr(handle, path, name, value, size, flags);
1853 }
1854
1855 int smb_vfs_call_lsetxattr(struct vfs_handle_struct *handle, const char *path,
1856 const char *name, const void *value, size_t size,
1857 int flags)
1858 {
1859 VFS_FIND(lsetxattr);
1860 return handle->fns->lsetxattr(handle, path, name, value, size, flags);
1861 }
1862
1863 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
1864 struct files_struct *fsp, const char *name,
1865 const void *value, size_t size, int flags)
1866 {
1867 VFS_FIND(fsetxattr);
1868 return handle->fns->fsetxattr(handle, fsp, name, value, size, flags);
1869 }
1870
1871 int smb_vfs_call_aio_read(struct vfs_handle_struct *handle,
1872 struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1873 {
1874 VFS_FIND(aio_read);
1875 return handle->fns->aio_read(handle, fsp, aiocb);
1876 }
1877
1878 int smb_vfs_call_aio_write(struct vfs_handle_struct *handle,
1879 struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1880 {
1881 VFS_FIND(aio_write);
1882 return handle->fns->aio_write(handle, fsp, aiocb);
1883 }
1884
1885 ssize_t smb_vfs_call_aio_return_fn(struct vfs_handle_struct *handle,
1886 struct files_struct *fsp,
1887 SMB_STRUCT_AIOCB *aiocb)
1888 {
1889 VFS_FIND(aio_return_fn);
1890 return handle->fns->aio_return_fn(handle, fsp, aiocb);
1891 }
1892
1893 int smb_vfs_call_aio_cancel(struct vfs_handle_struct *handle,
1894 struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1895 {
1896 VFS_FIND(aio_cancel);
1897 return handle->fns->aio_cancel(handle, fsp, aiocb);
1898 }
1899
1900 int smb_vfs_call_aio_error_fn(struct vfs_handle_struct *handle,
1901 struct files_struct *fsp,
1902 SMB_STRUCT_AIOCB *aiocb)
1903 {
1904 VFS_FIND(aio_error_fn);
1905 return handle->fns->aio_error_fn(handle, fsp, aiocb);
1906 }
1907
1908 int smb_vfs_call_aio_fsync(struct vfs_handle_struct *handle,
1909 struct files_struct *fsp, int op,
1910 SMB_STRUCT_AIOCB *aiocb)
1911 {
1912 VFS_FIND(aio_fsync);
1913 return handle->fns->aio_fsync(handle, fsp, op, aiocb);
1914 }
1915
1916 int smb_vfs_call_aio_suspend(struct vfs_handle_struct *handle,
1917 struct files_struct *fsp,
1918 const SMB_STRUCT_AIOCB * const aiocb[], int n,
1919 const struct timespec *timeout)
1920 {
1921 VFS_FIND(aio_suspend);
1922 return handle->fns->aio_suspend(handle, fsp, aiocb, n, timeout);
1923 }
1924
1925 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
1926 struct files_struct *fsp)
1927 {
1928 VFS_FIND(aio_force);
1929 return handle->fns->aio_force(handle, fsp);
1930 }
1931
1932 bool smb_vfs_call_is_offline(struct vfs_handle_struct *handle,
1933 const char *path, SMB_STRUCT_STAT *sbuf)
1934 {
1935 VFS_FIND(is_offline);
1936 return handle->fns->is_offline(handle, path, sbuf);
1937 }
1938
1939 int smb_vfs_call_set_offline(struct vfs_handle_struct *handle,
1940 const char *path)
1941 {
1942 VFS_FIND(set_offline);
1943 return handle->fns->set_offline(handle, path);
1944 }
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