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Now make_connection_snum() is a static function that takes a
[Samba/gebeck_regimport.git] / source3 / modules / vfs_default.c
blobf556f1c49675f532339a4773fc6015b420d12515
1 /*
2 Unix SMB/CIFS implementation.
3 Wrap disk only vfs functions to sidestep dodgy compilers.
4 Copyright (C) Tim Potter 1998
5 Copyright (C) Jeremy Allison 2007
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
19 */
20
21 #include "includes.h"
22 #include "system/time.h"
23 #include "system/filesys.h"
24 #include "smbd/smbd.h"
25 #include "ntioctl.h"
26 #include "smbprofile.h"
27 #include "../libcli/security/security.h"
28 #include "passdb/lookup_sid.h"
29 #include "source3/include/msdfs.h"
30 #include "librpc/gen_ndr/ndr_dfsblobs.h"
31
32 #undef DBGC_CLASS
33 #define DBGC_CLASS DBGC_VFS
34
35 /* Check for NULL pointer parameters in vfswrap_* functions */
36
37 /* We don't want to have NULL function pointers lying around. Someone
38 is sure to try and execute them. These stubs are used to prevent
39 this possibility. */
40
41 static int vfswrap_connect(vfs_handle_struct *handle, const char *service, const char *user)
42 {
43 return 0; /* Return >= 0 for success */
44 }
45
46 static void vfswrap_disconnect(vfs_handle_struct *handle)
47 {
48 }
49
50 /* Disk operations */
51
52 static uint64_t vfswrap_disk_free(vfs_handle_struct *handle, const char *path, bool small_query, uint64_t *bsize,
53 uint64_t *dfree, uint64_t *dsize)
54 {
55 uint64_t result;
56
57 result = sys_disk_free(handle->conn, path, small_query, bsize, dfree, dsize);
58 return result;
59 }
60
61 static int vfswrap_get_quota(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
62 {
63 #ifdef HAVE_SYS_QUOTAS
64 int result;
65
66 START_PROFILE(syscall_get_quota);
67 result = sys_get_quota(handle->conn->connectpath, qtype, id, qt);
68 END_PROFILE(syscall_get_quota);
69 return result;
70 #else
71 errno = ENOSYS;
72 return -1;
73 #endif
74 }
75
76 static int vfswrap_set_quota(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
77 {
78 #ifdef HAVE_SYS_QUOTAS
79 int result;
80
81 START_PROFILE(syscall_set_quota);
82 result = sys_set_quota(handle->conn->connectpath, qtype, id, qt);
83 END_PROFILE(syscall_set_quota);
84 return result;
85 #else
86 errno = ENOSYS;
87 return -1;
88 #endif
89 }
90
91 static int vfswrap_get_shadow_copy_data(struct vfs_handle_struct *handle,
92 struct files_struct *fsp,
93 struct shadow_copy_data *shadow_copy_data,
94 bool labels)
95 {
96 errno = ENOSYS;
97 return -1; /* Not implemented. */
98 }
99
100 static int vfswrap_statvfs(struct vfs_handle_struct *handle, const char *path, vfs_statvfs_struct *statbuf)
101 {
102 return sys_statvfs(path, statbuf);
103 }
104
105 static uint32_t vfswrap_fs_capabilities(struct vfs_handle_struct *handle,
106 enum timestamp_set_resolution *p_ts_res)
107 {
108 connection_struct *conn = handle->conn;
109 uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
110 struct smb_filename *smb_fname_cpath = NULL;
111 NTSTATUS status;
112 int ret = -1;
113
114 #if defined(DARWINOS)
115 struct vfs_statvfs_struct statbuf;
116 ZERO_STRUCT(statbuf);
117 sys_statvfs(conn->connectpath, &statbuf);
118 caps = statbuf.FsCapabilities;
119 #endif
120
121 *p_ts_res = TIMESTAMP_SET_SECONDS;
122
123 /* Work out what timestamp resolution we can
124 * use when setting a timestamp. */
125
126 status = create_synthetic_smb_fname(talloc_tos(),
127 conn->connectpath,
128 NULL,
129 NULL,
130 &smb_fname_cpath);
131 if (!NT_STATUS_IS_OK(status)) {
132 return caps;
133 }
134
135 ret = SMB_VFS_STAT(conn, smb_fname_cpath);
136 if (ret == -1) {
137 TALLOC_FREE(smb_fname_cpath);
138 return caps;
139 }
140
141 if (smb_fname_cpath->st.st_ex_mtime.tv_nsec ||
142 smb_fname_cpath->st.st_ex_atime.tv_nsec ||
143 smb_fname_cpath->st.st_ex_ctime.tv_nsec) {
144 /* If any of the normal UNIX directory timestamps
145 * have a non-zero tv_nsec component assume
146 * we might be able to set sub-second timestamps.
147 * See what filetime set primitives we have.
148 */
149 #if defined(HAVE_UTIMENSAT)
150 *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
151 #elif defined(HAVE_UTIMES)
152 /* utimes allows msec timestamps to be set. */
153 *p_ts_res = TIMESTAMP_SET_MSEC;
154 #elif defined(HAVE_UTIME)
155 /* utime only allows sec timestamps to be set. */
156 *p_ts_res = TIMESTAMP_SET_SECONDS;
157 #endif
158
159 DEBUG(10,("vfswrap_fs_capabilities: timestamp "
160 "resolution of %s "
161 "available on share %s, directory %s\n",
162 *p_ts_res == TIMESTAMP_SET_MSEC ? "msec" : "sec",
163 lp_servicename(conn->params->service),
164 conn->connectpath ));
165 }
166 TALLOC_FREE(smb_fname_cpath);
167 return caps;
168 }
169
170 static NTSTATUS vfswrap_get_dfs_referrals(struct vfs_handle_struct *handle,
171 struct dfs_GetDFSReferral *r)
172 {
173 struct junction_map *junction = NULL;
174 int consumedcnt = 0;
175 bool self_referral = false;
176 char *pathnamep = NULL;
177 char *local_dfs_path = NULL;
178 NTSTATUS status;
179 int i;
180 uint16_t max_referral_level = r->in.req.max_referral_level;
181
182 if (DEBUGLVL(10)) {
183 NDR_PRINT_IN_DEBUG(dfs_GetDFSReferral, r);
184 }
185
186 /* get the junction entry */
187 if (r->in.req.servername == NULL) {
188 return NT_STATUS_NOT_FOUND;
189 }
190
191 /*
192 * Trim pathname sent by client so it begins with only one backslash.
193 * Two backslashes confuse some dfs clients
194 */
195
196 local_dfs_path = talloc_strdup(r, r->in.req.servername);
197 if (local_dfs_path == NULL) {
198 return NT_STATUS_NO_MEMORY;
199 }
200 pathnamep = local_dfs_path;
201 while (IS_DIRECTORY_SEP(pathnamep[0]) &&
202 IS_DIRECTORY_SEP(pathnamep[1])) {
203 pathnamep++;
204 }
205
206 junction = talloc_zero(r, struct junction_map);
207 if (junction == NULL) {
208 return NT_STATUS_NO_MEMORY;
209 }
210
211 /* The following call can change cwd. */
212 status = get_referred_path(r, pathnamep, handle->conn->sconn,
213 junction, &consumedcnt, &self_referral);
214 if (!NT_STATUS_IS_OK(status)) {
215 vfs_ChDir(handle->conn, handle->conn->connectpath);
216 return status;
217 }
218 vfs_ChDir(handle->conn, handle->conn->connectpath);
219
220 if (!self_referral) {
221 pathnamep[consumedcnt] = '\0';
222
223 if (DEBUGLVL(3)) {
224 dbgtext("setup_dfs_referral: Path %s to "
225 "alternate path(s):",
226 pathnamep);
227 for (i=0; i < junction->referral_count; i++) {
228 dbgtext(" %s",
229 junction->referral_list[i].alternate_path);
230 }
231 dbgtext(".\n");
232 }
233 }
234
235 if (r->in.req.max_referral_level <= 2) {
236 max_referral_level = 2;
237 }
238 if (r->in.req.max_referral_level >= 3) {
239 max_referral_level = 3;
240 }
241
242 r->out.resp = talloc_zero(r, struct dfs_referral_resp);
243 if (r->out.resp == NULL) {
244 return NT_STATUS_NO_MEMORY;
245 }
246
247 r->out.resp->path_consumed = strlen_m(pathnamep) * 2;
248 r->out.resp->nb_referrals = junction->referral_count;
249
250 r->out.resp->header_flags = DFS_HEADER_FLAG_STORAGE_SVR;
251 if (self_referral) {
252 r->out.resp->header_flags |= DFS_HEADER_FLAG_REFERAL_SVR;
253 }
254
255 r->out.resp->referral_entries = talloc_zero_array(r,
256 struct dfs_referral_type,
257 r->out.resp->nb_referrals);
258 if (r->out.resp->referral_entries == NULL) {
259 return NT_STATUS_NO_MEMORY;
260 }
261
262 switch (max_referral_level) {
263 case 2:
264 for(i=0; i < junction->referral_count; i++) {
265 struct referral *ref = &junction->referral_list[i];
266 TALLOC_CTX *mem_ctx = r->out.resp->referral_entries;
267 struct dfs_referral_type *t =
268 &r->out.resp->referral_entries[i];
269 struct dfs_referral_v2 *v2 = &t->referral.v2;
270
271 t->version = 2;
272 v2->size = VERSION2_REFERRAL_SIZE;
273 if (self_referral) {
274 v2->server_type = DFS_SERVER_ROOT;
275 } else {
276 v2->server_type = DFS_SERVER_NON_ROOT;
277 }
278 v2->entry_flags = 0;
279 v2->proximity = ref->proximity;
280 v2->ttl = ref->ttl;
281 v2->DFS_path = talloc_strdup(mem_ctx, pathnamep);
282 if (v2->DFS_path == NULL) {
283 return NT_STATUS_NO_MEMORY;
284 }
285 v2->DFS_alt_path = talloc_strdup(mem_ctx, pathnamep);
286 if (v2->DFS_alt_path == NULL) {
287 return NT_STATUS_NO_MEMORY;
288 }
289 v2->netw_address = talloc_strdup(mem_ctx,
290 ref->alternate_path);
291 if (v2->netw_address == NULL) {
292 return NT_STATUS_NO_MEMORY;
293 }
294 }
295
296 break;
297 case 3:
298 for(i=0; i < junction->referral_count; i++) {
299 struct referral *ref = &junction->referral_list[i];
300 TALLOC_CTX *mem_ctx = r->out.resp->referral_entries;
301 struct dfs_referral_type *t =
302 &r->out.resp->referral_entries[i];
303 struct dfs_referral_v3 *v3 = &t->referral.v3;
304 struct dfs_normal_referral *r1 = &v3->referrals.r1;
305
306 t->version = 3;
307 v3->size = VERSION3_REFERRAL_SIZE;
308 if (self_referral) {
309 v3->server_type = DFS_SERVER_ROOT;
310 } else {
311 v3->server_type = DFS_SERVER_NON_ROOT;
312 }
313 v3->entry_flags = 0;
314 v3->ttl = ref->ttl;
315 r1->DFS_path = talloc_strdup(mem_ctx, pathnamep);
316 if (r1->DFS_path == NULL) {
317 return NT_STATUS_NO_MEMORY;
318 }
319 r1->DFS_alt_path = talloc_strdup(mem_ctx, pathnamep);
320 if (r1->DFS_alt_path == NULL) {
321 return NT_STATUS_NO_MEMORY;
322 }
323 r1->netw_address = talloc_strdup(mem_ctx,
324 ref->alternate_path);
325 if (r1->netw_address == NULL) {
326 return NT_STATUS_NO_MEMORY;
327 }
328 }
329 break;
330 default:
331 DEBUG(0,("setup_dfs_referral: Invalid dfs referral "
332 "version: %d\n",
333 max_referral_level));
334 return NT_STATUS_INVALID_LEVEL;
335 }
336
337 if (DEBUGLVL(10)) {
338 NDR_PRINT_OUT_DEBUG(dfs_GetDFSReferral, r);
339 }
340
341 return NT_STATUS_OK;
342 }
343
344 /* Directory operations */
345
346 static SMB_STRUCT_DIR *vfswrap_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
347 {
348 SMB_STRUCT_DIR *result;
349
350 START_PROFILE(syscall_opendir);
351 result = sys_opendir(fname);
352 END_PROFILE(syscall_opendir);
353 return result;
354 }
355
356 static SMB_STRUCT_DIR *vfswrap_fdopendir(vfs_handle_struct *handle,
357 files_struct *fsp,
358 const char *mask,
359 uint32 attr)
360 {
361 SMB_STRUCT_DIR *result;
362
363 START_PROFILE(syscall_fdopendir);
364 result = sys_fdopendir(fsp->fh->fd);
365 END_PROFILE(syscall_fdopendir);
366 return result;
367 }
368
369
370 static SMB_STRUCT_DIRENT *vfswrap_readdir(vfs_handle_struct *handle,
371 SMB_STRUCT_DIR *dirp,
372 SMB_STRUCT_STAT *sbuf)
373 {
374 SMB_STRUCT_DIRENT *result;
375
376 START_PROFILE(syscall_readdir);
377 result = sys_readdir(dirp);
378 /* Default Posix readdir() does not give us stat info.
379 * Set to invalid to indicate we didn't return this info. */
380 if (sbuf)
381 SET_STAT_INVALID(*sbuf);
382 END_PROFILE(syscall_readdir);
383 return result;
384 }
385
386 static void vfswrap_seekdir(vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp, long offset)
387 {
388 START_PROFILE(syscall_seekdir);
389 sys_seekdir(dirp, offset);
390 END_PROFILE(syscall_seekdir);
391 }
392
393 static long vfswrap_telldir(vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp)
394 {
395 long result;
396 START_PROFILE(syscall_telldir);
397 result = sys_telldir(dirp);
398 END_PROFILE(syscall_telldir);
399 return result;
400 }
401
402 static void vfswrap_rewinddir(vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp)
403 {
404 START_PROFILE(syscall_rewinddir);
405 sys_rewinddir(dirp);
406 END_PROFILE(syscall_rewinddir);
407 }
408
409 static int vfswrap_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode)
410 {
411 int result;
412 bool has_dacl = False;
413 char *parent = NULL;
414
415 START_PROFILE(syscall_mkdir);
416
417 if (lp_inherit_acls(SNUM(handle->conn))
418 && parent_dirname(talloc_tos(), path, &parent, NULL)
419 && (has_dacl = directory_has_default_acl(handle->conn, parent)))
420 mode = (0777 & lp_dir_mask(SNUM(handle->conn)));
421
422 TALLOC_FREE(parent);
423
424 result = mkdir(path, mode);
425
426 if (result == 0 && !has_dacl) {
427 /*
428 * We need to do this as the default behavior of POSIX ACLs
429 * is to set the mask to be the requested group permission
430 * bits, not the group permission bits to be the requested
431 * group permission bits. This is not what we want, as it will
432 * mess up any inherited ACL bits that were set. JRA.
433 */
434 int saved_errno = errno; /* We may get ENOSYS */
435 if ((SMB_VFS_CHMOD_ACL(handle->conn, path, mode) == -1) && (errno == ENOSYS))
436 errno = saved_errno;
437 }
438
439 END_PROFILE(syscall_mkdir);
440 return result;
441 }
442
443 static int vfswrap_rmdir(vfs_handle_struct *handle, const char *path)
444 {
445 int result;
446
447 START_PROFILE(syscall_rmdir);
448 result = rmdir(path);
449 END_PROFILE(syscall_rmdir);
450 return result;
451 }
452
453 static int vfswrap_closedir(vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp)
454 {
455 int result;
456
457 START_PROFILE(syscall_closedir);
458 result = sys_closedir(dirp);
459 END_PROFILE(syscall_closedir);
460 return result;
461 }
462
463 static void vfswrap_init_search_op(vfs_handle_struct *handle,
464 SMB_STRUCT_DIR *dirp)
465 {
466 /* Default behavior is a NOOP */
467 }
468
469 /* File operations */
470
471 static int vfswrap_open(vfs_handle_struct *handle,
472 struct smb_filename *smb_fname,
473 files_struct *fsp, int flags, mode_t mode)
474 {
475 int result = -1;
476
477 START_PROFILE(syscall_open);
478
479 if (smb_fname->stream_name) {
480 errno = ENOENT;
481 goto out;
482 }
483
484 result = sys_open(smb_fname->base_name, flags, mode);
485 out:
486 END_PROFILE(syscall_open);
487 return result;
488 }
489
490 static NTSTATUS vfswrap_create_file(vfs_handle_struct *handle,
491 struct smb_request *req,
492 uint16_t root_dir_fid,
493 struct smb_filename *smb_fname,
494 uint32_t access_mask,
495 uint32_t share_access,
496 uint32_t create_disposition,
497 uint32_t create_options,
498 uint32_t file_attributes,
499 uint32_t oplock_request,
500 uint64_t allocation_size,
501 uint32_t private_flags,
502 struct security_descriptor *sd,
503 struct ea_list *ea_list,
504 files_struct **result,
505 int *pinfo)
506 {
507 return create_file_default(handle->conn, req, root_dir_fid, smb_fname,
508 access_mask, share_access,
509 create_disposition, create_options,
510 file_attributes, oplock_request,
511 allocation_size, private_flags,
512 sd, ea_list, result,
513 pinfo);
514 }
515
516 static int vfswrap_close(vfs_handle_struct *handle, files_struct *fsp)
517 {
518 int result;
519
520 START_PROFILE(syscall_close);
521 result = fd_close_posix(fsp);
522 END_PROFILE(syscall_close);
523 return result;
524 }
525
526 static ssize_t vfswrap_read(vfs_handle_struct *handle, files_struct *fsp, void *data, size_t n)
527 {
528 ssize_t result;
529
530 START_PROFILE_BYTES(syscall_read, n);
531 result = sys_read(fsp->fh->fd, data, n);
532 END_PROFILE(syscall_read);
533 return result;
534 }
535
536 static ssize_t vfswrap_pread(vfs_handle_struct *handle, files_struct *fsp, void *data,
537 size_t n, SMB_OFF_T offset)
538 {
539 ssize_t result;
540
541 #if defined(HAVE_PREAD) || defined(HAVE_PREAD64)
542 START_PROFILE_BYTES(syscall_pread, n);
543 result = sys_pread(fsp->fh->fd, data, n, offset);
544 END_PROFILE(syscall_pread);
545
546 if (result == -1 && errno == ESPIPE) {
547 /* Maintain the fiction that pipes can be seeked (sought?) on. */
548 result = SMB_VFS_READ(fsp, data, n);
549 fsp->fh->pos = 0;
550 }
551
552 #else /* HAVE_PREAD */
553 SMB_OFF_T curr;
554 int lerrno;
555
556 curr = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
557 if (curr == -1 && errno == ESPIPE) {
558 /* Maintain the fiction that pipes can be seeked (sought?) on. */
559 result = SMB_VFS_READ(fsp, data, n);
560 fsp->fh->pos = 0;
561 return result;
562 }
563
564 if (SMB_VFS_LSEEK(fsp, offset, SEEK_SET) == -1) {
565 return -1;
566 }
567
568 errno = 0;
569 result = SMB_VFS_READ(fsp, data, n);
570 lerrno = errno;
571
572 SMB_VFS_LSEEK(fsp, curr, SEEK_SET);
573 errno = lerrno;
574
575 #endif /* HAVE_PREAD */
576
577 return result;
578 }
579
580 static ssize_t vfswrap_write(vfs_handle_struct *handle, files_struct *fsp, const void *data, size_t n)
581 {
582 ssize_t result;
583
584 START_PROFILE_BYTES(syscall_write, n);
585 result = sys_write(fsp->fh->fd, data, n);
586 END_PROFILE(syscall_write);
587 return result;
588 }
589
590 static ssize_t vfswrap_pwrite(vfs_handle_struct *handle, files_struct *fsp, const void *data,
591 size_t n, SMB_OFF_T offset)
592 {
593 ssize_t result;
594
595 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
596 START_PROFILE_BYTES(syscall_pwrite, n);
597 result = sys_pwrite(fsp->fh->fd, data, n, offset);
598 END_PROFILE(syscall_pwrite);
599
600 if (result == -1 && errno == ESPIPE) {
601 /* Maintain the fiction that pipes can be sought on. */
602 result = SMB_VFS_WRITE(fsp, data, n);
603 }
604
605 #else /* HAVE_PWRITE */
606 SMB_OFF_T curr;
607 int lerrno;
608
609 curr = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
610 if (curr == -1) {
611 return -1;
612 }
613
614 if (SMB_VFS_LSEEK(fsp, offset, SEEK_SET) == -1) {
615 return -1;
616 }
617
618 result = SMB_VFS_WRITE(fsp, data, n);
619 lerrno = errno;
620
621 SMB_VFS_LSEEK(fsp, curr, SEEK_SET);
622 errno = lerrno;
623
624 #endif /* HAVE_PWRITE */
625
626 return result;
627 }
628
629 static SMB_OFF_T vfswrap_lseek(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T offset, int whence)
630 {
631 SMB_OFF_T result = 0;
632
633 START_PROFILE(syscall_lseek);
634
635 /* Cope with 'stat' file opens. */
636 if (fsp->fh->fd != -1)
637 result = sys_lseek(fsp->fh->fd, offset, whence);
638
639 /*
640 * We want to maintain the fiction that we can seek
641 * on a fifo for file system purposes. This allows
642 * people to set up UNIX fifo's that feed data to Windows
643 * applications. JRA.
644 */
645
646 if((result == -1) && (errno == ESPIPE)) {
647 result = 0;
648 errno = 0;
649 }
650
651 END_PROFILE(syscall_lseek);
652 return result;
653 }
654
655 static ssize_t vfswrap_sendfile(vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *hdr,
656 SMB_OFF_T offset, size_t n)
657 {
658 ssize_t result;
659
660 START_PROFILE_BYTES(syscall_sendfile, n);
661 result = sys_sendfile(tofd, fromfsp->fh->fd, hdr, offset, n);
662 END_PROFILE(syscall_sendfile);
663 return result;
664 }
665
666 static ssize_t vfswrap_recvfile(vfs_handle_struct *handle,
667 int fromfd,
668 files_struct *tofsp,
669 SMB_OFF_T offset,
670 size_t n)
671 {
672 ssize_t result;
673
674 START_PROFILE_BYTES(syscall_recvfile, n);
675 result = sys_recvfile(fromfd, tofsp->fh->fd, offset, n);
676 END_PROFILE(syscall_recvfile);
677 return result;
678 }
679
680 static int vfswrap_rename(vfs_handle_struct *handle,
681 const struct smb_filename *smb_fname_src,
682 const struct smb_filename *smb_fname_dst)
683 {
684 int result = -1;
685
686 START_PROFILE(syscall_rename);
687
688 if (smb_fname_src->stream_name || smb_fname_dst->stream_name) {
689 errno = ENOENT;
690 goto out;
691 }
692
693 result = rename(smb_fname_src->base_name, smb_fname_dst->base_name);
694
695 out:
696 END_PROFILE(syscall_rename);
697 return result;
698 }
699
700 static int vfswrap_fsync(vfs_handle_struct *handle, files_struct *fsp)
701 {
702 #ifdef HAVE_FSYNC
703 int result;
704
705 START_PROFILE(syscall_fsync);
706 result = fsync(fsp->fh->fd);
707 END_PROFILE(syscall_fsync);
708 return result;
709 #else
710 return 0;
711 #endif
712 }
713
714 static int vfswrap_stat(vfs_handle_struct *handle,
715 struct smb_filename *smb_fname)
716 {
717 int result = -1;
718
719 START_PROFILE(syscall_stat);
720
721 if (smb_fname->stream_name) {
722 errno = ENOENT;
723 goto out;
724 }
725
726 result = sys_stat(smb_fname->base_name, &smb_fname->st,
727 lp_fake_dir_create_times(SNUM(handle->conn)));
728 out:
729 END_PROFILE(syscall_stat);
730 return result;
731 }
732
733 static int vfswrap_fstat(vfs_handle_struct *handle, files_struct *fsp, SMB_STRUCT_STAT *sbuf)
734 {
735 int result;
736
737 START_PROFILE(syscall_fstat);
738 result = sys_fstat(fsp->fh->fd,
739 sbuf, lp_fake_dir_create_times(SNUM(handle->conn)));
740 END_PROFILE(syscall_fstat);
741 return result;
742 }
743
744 static int vfswrap_lstat(vfs_handle_struct *handle,
745 struct smb_filename *smb_fname)
746 {
747 int result = -1;
748
749 START_PROFILE(syscall_lstat);
750
751 if (smb_fname->stream_name) {
752 errno = ENOENT;
753 goto out;
754 }
755
756 result = sys_lstat(smb_fname->base_name, &smb_fname->st,
757 lp_fake_dir_create_times(SNUM(handle->conn)));
758 out:
759 END_PROFILE(syscall_lstat);
760 return result;
761 }
762
763 static NTSTATUS vfswrap_translate_name(struct vfs_handle_struct *handle,
764 const char *name,
765 enum vfs_translate_direction direction,
766 TALLOC_CTX *mem_ctx,
767 char **mapped_name)
768 {
769 return NT_STATUS_NONE_MAPPED;
770 }
771
772 /*
773 * Implement the default fsctl operation.
774 */
775 static bool vfswrap_logged_ioctl_message = false;
776
777 static NTSTATUS vfswrap_fsctl(struct vfs_handle_struct *handle,
778 struct files_struct *fsp,
779 TALLOC_CTX *ctx,
780 uint32_t function,
781 uint16_t req_flags, /* Needed for UNICODE ... */
782 const uint8_t *_in_data,
783 uint32_t in_len,
784 uint8_t **_out_data,
785 uint32_t max_out_len,
786 uint32_t *out_len)
787 {
788 const char *in_data = (const char *)_in_data;
789 char **out_data = (char **)_out_data;
790
791 switch (function) {
792 case FSCTL_SET_SPARSE:
793 {
794 bool set_sparse = true;
795 NTSTATUS status;
796
797 if (in_len >= 1 && in_data[0] == 0) {
798 set_sparse = false;
799 }
800
801 status = file_set_sparse(handle->conn, fsp, set_sparse);
802
803 DEBUG(NT_STATUS_IS_OK(status) ? 10 : 9,
804 ("FSCTL_SET_SPARSE: fname[%s] set[%u] - %s\n",
805 smb_fname_str_dbg(fsp->fsp_name), set_sparse,
806 nt_errstr(status)));
807
808 return status;
809 }
810
811 case FSCTL_CREATE_OR_GET_OBJECT_ID:
812 {
813 unsigned char objid[16];
814 char *return_data = NULL;
815
816 /* This should return the object-id on this file.
817 * I think I'll make this be the inode+dev. JRA.
818 */
819
820 DEBUG(10,("FSCTL_CREATE_OR_GET_OBJECT_ID: called on FID[0x%04X]\n",fsp->fnum));
821
822 *out_len = (max_out_len >= 64) ? 64 : max_out_len;
823 /* Hmmm, will this cause problems if less data asked for? */
824 return_data = talloc_array(ctx, char, 64);
825 if (return_data == NULL) {
826 return NT_STATUS_NO_MEMORY;
827 }
828
829 /* For backwards compatibility only store the dev/inode. */
830 push_file_id_16(return_data, &fsp->file_id);
831 memcpy(return_data+16,create_volume_objectid(fsp->conn,objid),16);
832 push_file_id_16(return_data+32, &fsp->file_id);
833 *out_data = return_data;
834 return NT_STATUS_OK;
835 }
836
837 case FSCTL_GET_REPARSE_POINT:
838 {
839 /* Fail it with STATUS_NOT_A_REPARSE_POINT */
840 DEBUG(10, ("FSCTL_GET_REPARSE_POINT: called on FID[0x%04X] Status: NOT_IMPLEMENTED\n", fsp->fnum));
841 return NT_STATUS_NOT_A_REPARSE_POINT;
842 }
843
844 case FSCTL_SET_REPARSE_POINT:
845 {
846 /* Fail it with STATUS_NOT_A_REPARSE_POINT */
847 DEBUG(10, ("FSCTL_SET_REPARSE_POINT: called on FID[0x%04X] Status: NOT_IMPLEMENTED\n", fsp->fnum));
848 return NT_STATUS_NOT_A_REPARSE_POINT;
849 }
850
851 case FSCTL_GET_SHADOW_COPY_DATA:
852 {
853 /*
854 * This is called to retrieve the number of Shadow Copies (a.k.a. snapshots)
855 * and return their volume names. If max_data_count is 16, then it is just
856 * asking for the number of volumes and length of the combined names.
857 *
858 * pdata is the data allocated by our caller, but that uses
859 * total_data_count (which is 0 in our case) rather than max_data_count.
860 * Allocate the correct amount and return the pointer to let
861 * it be deallocated when we return.
862 */
863 struct shadow_copy_data *shadow_data = NULL;
864 bool labels = False;
865 uint32 labels_data_count = 0;
866 uint32 i;
867 char *cur_pdata = NULL;
868
869 if (max_out_len < 16) {
870 DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) < 16 is invalid!\n",
871 max_out_len));
872 return NT_STATUS_INVALID_PARAMETER;
873 }
874
875 if (max_out_len > 16) {
876 labels = True;
877 }
878
879 shadow_data = talloc_zero(ctx, struct shadow_copy_data);
880 if (shadow_data == NULL) {
881 DEBUG(0,("TALLOC_ZERO() failed!\n"));
882 return NT_STATUS_NO_MEMORY;
883 }
884
885 /*
886 * Call the VFS routine to actually do the work.
887 */
888 if (SMB_VFS_GET_SHADOW_COPY_DATA(fsp, shadow_data, labels)!=0) {
889 TALLOC_FREE(shadow_data);
890 if (errno == ENOSYS) {
891 DEBUG(5,("FSCTL_GET_SHADOW_COPY_DATA: connectpath %s, not supported.\n",
892 fsp->conn->connectpath));
893 return NT_STATUS_NOT_SUPPORTED;
894 } else {
895 DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: connectpath %s, failed.\n",
896 fsp->conn->connectpath));
897 return NT_STATUS_UNSUCCESSFUL;
898 }
899 }
900
901 labels_data_count = (shadow_data->num_volumes * 2 *
902 sizeof(SHADOW_COPY_LABEL)) + 2;
903
904 if (!labels) {
905 *out_len = 16;
906 } else {
907 *out_len = 12 + labels_data_count + 4;
908 }
909
910 if (max_out_len < *out_len) {
911 DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) too small (%u) bytes needed!\n",
912 max_out_len, *out_len));
913 TALLOC_FREE(shadow_data);
914 return NT_STATUS_BUFFER_TOO_SMALL;
915 }
916
917 cur_pdata = talloc_array(ctx, char, *out_len);
918 if (cur_pdata == NULL) {
919 TALLOC_FREE(shadow_data);
920 return NT_STATUS_NO_MEMORY;
921 }
922
923 *out_data = cur_pdata;
924
925 /* num_volumes 4 bytes */
926 SIVAL(cur_pdata, 0, shadow_data->num_volumes);
927
928 if (labels) {
929 /* num_labels 4 bytes */
930 SIVAL(cur_pdata, 4, shadow_data->num_volumes);
931 }
932
933 /* needed_data_count 4 bytes */
934 SIVAL(cur_pdata, 8, labels_data_count + 4);
935
936 cur_pdata += 12;
937
938 DEBUG(10,("FSCTL_GET_SHADOW_COPY_DATA: %u volumes for path[%s].\n",
939 shadow_data->num_volumes, fsp_str_dbg(fsp)));
940 if (labels && shadow_data->labels) {
941 for (i=0; i<shadow_data->num_volumes; i++) {
942 srvstr_push(cur_pdata, req_flags,
943 cur_pdata, shadow_data->labels[i],
944 2 * sizeof(SHADOW_COPY_LABEL),
945 STR_UNICODE|STR_TERMINATE);
946 cur_pdata += 2 * sizeof(SHADOW_COPY_LABEL);
947 DEBUGADD(10,("Label[%u]: '%s'\n",i,shadow_data->labels[i]));
948 }
949 }
950
951 TALLOC_FREE(shadow_data);
952
953 return NT_STATUS_OK;
954 }
955
956 case FSCTL_FIND_FILES_BY_SID:
957 {
958 /* pretend this succeeded -
959 *
960 * we have to send back a list with all files owned by this SID
961 *
962 * but I have to check that --metze
963 */
964 struct dom_sid sid;
965 uid_t uid;
966 size_t sid_len;
967
968 DEBUG(10,("FSCTL_FIND_FILES_BY_SID: called on FID[0x%04X]\n", fsp->fnum));
969
970 if (in_len < 8) {
971 /* NT_STATUS_BUFFER_TOO_SMALL maybe? */
972 return NT_STATUS_INVALID_PARAMETER;
973 }
974
975 sid_len = MIN(in_len - 4,SID_MAX_SIZE);
976
977 /* unknown 4 bytes: this is not the length of the sid :-( */
978 /*unknown = IVAL(pdata,0);*/
979
980 if (!sid_parse(in_data + 4, sid_len, &sid)) {
981 return NT_STATUS_INVALID_PARAMETER;
982 }
983 DEBUGADD(10, ("for SID: %s\n", sid_string_dbg(&sid)));
984
985 if (!sid_to_uid(&sid, &uid)) {
986 DEBUG(0,("sid_to_uid: failed, sid[%s] sid_len[%lu]\n",
987 sid_string_dbg(&sid),
988 (unsigned long)sid_len));
989 uid = (-1);
990 }
991
992 /* we can take a look at the find source :-)
993 *
994 * find ./ -uid $uid -name '*' is what we need here
995 *
996 *
997 * and send 4bytes len and then NULL terminated unicode strings
998 * for each file
999 *
1000 * but I don't know how to deal with the paged results
1001 * (maybe we can hang the result anywhere in the fsp struct)
1002 *
1003 * but I don't know how to deal with the paged results
1004 * (maybe we can hang the result anywhere in the fsp struct)
1005 *
1006 * we don't send all files at once
1007 * and at the next we should *not* start from the beginning,
1008 * so we have to cache the result
1009 *
1010 * --metze
1011 */
1012
1013 /* this works for now... */
1014 return NT_STATUS_OK;
1015 }
1016
1017 case FSCTL_QUERY_ALLOCATED_RANGES:
1018 {
1019 /* FIXME: This is just a dummy reply, telling that all of the
1020 * file is allocated. MKS cp needs that.
1021 * Adding the real allocated ranges via FIEMAP on Linux
1022 * and SEEK_DATA/SEEK_HOLE on Solaris is needed to make
1023 * this FSCTL correct for sparse files.
1024 */
1025 NTSTATUS status;
1026 uint64_t offset, length;
1027 char *out_data_tmp = NULL;
1028
1029 if (in_len != 16) {
1030 DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: data_count(%u) != 16 is invalid!\n",
1031 in_len));
1032 return NT_STATUS_INVALID_PARAMETER;
1033 }
1034
1035 if (max_out_len < 16) {
1036 DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: max_out_len (%u) < 16 is invalid!\n",
1037 max_out_len));
1038 return NT_STATUS_INVALID_PARAMETER;
1039 }
1040
1041 offset = BVAL(in_data,0);
1042 length = BVAL(in_data,8);
1043
1044 if (offset + length < offset) {
1045 /* No 64-bit integer wrap. */
1046 return NT_STATUS_INVALID_PARAMETER;
1047 }
1048
1049 /* Shouldn't this be SMB_VFS_STAT ... ? */
1050 status = vfs_stat_fsp(fsp);
1051 if (!NT_STATUS_IS_OK(status)) {
1052 return status;
1053 }
1054
1055 *out_len = 16;
1056 out_data_tmp = talloc_array(ctx, char, *out_len);
1057 if (out_data_tmp == NULL) {
1058 DEBUG(10, ("unable to allocate memory for response\n"));
1059 return NT_STATUS_NO_MEMORY;
1060 }
1061
1062 if (offset > fsp->fsp_name->st.st_ex_size ||
1063 fsp->fsp_name->st.st_ex_size == 0 ||
1064 length == 0) {
1065 memset(out_data_tmp, 0, *out_len);
1066 } else {
1067 uint64_t end = offset + length;
1068 end = MIN(end, fsp->fsp_name->st.st_ex_size);
1069 SBVAL(out_data_tmp, 0, 0);
1070 SBVAL(out_data_tmp, 8, end);
1071 }
1072
1073 *out_data = out_data_tmp;
1074
1075 return NT_STATUS_OK;
1076 }
1077
1078 case FSCTL_IS_VOLUME_DIRTY:
1079 {
1080 DEBUG(10,("FSCTL_IS_VOLUME_DIRTY: called on FID[0x%04X] "
1081 "(but not implemented)\n", fsp->fnum));
1082 /*
1083 * http://msdn.microsoft.com/en-us/library/cc232128%28PROT.10%29.aspx
1084 * says we have to respond with NT_STATUS_INVALID_PARAMETER
1085 */
1086 return NT_STATUS_INVALID_PARAMETER;
1087 }
1088
1089 default:
1090 /*
1091 * Only print once ... unfortunately there could be lots of
1092 * different FSCTLs that are called.
1093 */
1094 if (!vfswrap_logged_ioctl_message) {
1095 vfswrap_logged_ioctl_message = true;
1096 DEBUG(2, ("%s (0x%x): Currently not implemented.\n",
1097 __func__, function));
1098 }
1099 }
1100
1101 return NT_STATUS_NOT_SUPPORTED;
1102 }
1103
1104 /********************************************************************
1105 Given a stat buffer return the allocated size on disk, taking into
1106 account sparse files.
1107 ********************************************************************/
1108 static uint64_t vfswrap_get_alloc_size(vfs_handle_struct *handle,
1109 struct files_struct *fsp,
1110 const SMB_STRUCT_STAT *sbuf)
1111 {
1112 uint64_t result;
1113
1114 START_PROFILE(syscall_get_alloc_size);
1115
1116 if(S_ISDIR(sbuf->st_ex_mode)) {
1117 result = 0;
1118 goto out;
1119 }
1120
1121 #if defined(HAVE_STAT_ST_BLOCKS) && defined(STAT_ST_BLOCKSIZE)
1122 result = (uint64_t)STAT_ST_BLOCKSIZE * (uint64_t)sbuf->st_ex_blocks;
1123 #else
1124 result = get_file_size_stat(sbuf);
1125 #endif
1126
1127 if (fsp && fsp->initial_allocation_size)
1128 result = MAX(result,fsp->initial_allocation_size);
1129
1130 result = smb_roundup(handle->conn, result);
1131
1132 out:
1133 END_PROFILE(syscall_get_alloc_size);
1134 return result;
1135 }
1136
1137 static int vfswrap_unlink(vfs_handle_struct *handle,
1138 const struct smb_filename *smb_fname)
1139 {
1140 int result = -1;
1141
1142 START_PROFILE(syscall_unlink);
1143
1144 if (smb_fname->stream_name) {
1145 errno = ENOENT;
1146 goto out;
1147 }
1148 result = unlink(smb_fname->base_name);
1149
1150 out:
1151 END_PROFILE(syscall_unlink);
1152 return result;
1153 }
1154
1155 static int vfswrap_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
1156 {
1157 int result;
1158
1159 START_PROFILE(syscall_chmod);
1160
1161 /*
1162 * We need to do this due to the fact that the default POSIX ACL
1163 * chmod modifies the ACL *mask* for the group owner, not the
1164 * group owner bits directly. JRA.
1165 */
1166
1167
1168 {
1169 int saved_errno = errno; /* We might get ENOSYS */
1170 if ((result = SMB_VFS_CHMOD_ACL(handle->conn, path, mode)) == 0) {
1171 END_PROFILE(syscall_chmod);
1172 return result;
1173 }
1174 /* Error - return the old errno. */
1175 errno = saved_errno;
1176 }
1177
1178 result = chmod(path, mode);
1179 END_PROFILE(syscall_chmod);
1180 return result;
1181 }
1182
1183 static int vfswrap_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
1184 {
1185 int result;
1186
1187 START_PROFILE(syscall_fchmod);
1188
1189 /*
1190 * We need to do this due to the fact that the default POSIX ACL
1191 * chmod modifies the ACL *mask* for the group owner, not the
1192 * group owner bits directly. JRA.
1193 */
1194
1195 {
1196 int saved_errno = errno; /* We might get ENOSYS */
1197 if ((result = SMB_VFS_FCHMOD_ACL(fsp, mode)) == 0) {
1198 END_PROFILE(syscall_fchmod);
1199 return result;
1200 }
1201 /* Error - return the old errno. */
1202 errno = saved_errno;
1203 }
1204
1205 #if defined(HAVE_FCHMOD)
1206 result = fchmod(fsp->fh->fd, mode);
1207 #else
1208 result = -1;
1209 errno = ENOSYS;
1210 #endif
1211
1212 END_PROFILE(syscall_fchmod);
1213 return result;
1214 }
1215
1216 static int vfswrap_chown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
1217 {
1218 int result;
1219
1220 START_PROFILE(syscall_chown);
1221 result = chown(path, uid, gid);
1222 END_PROFILE(syscall_chown);
1223 return result;
1224 }
1225
1226 static int vfswrap_fchown(vfs_handle_struct *handle, files_struct *fsp, uid_t uid, gid_t gid)
1227 {
1228 #ifdef HAVE_FCHOWN
1229 int result;
1230
1231 START_PROFILE(syscall_fchown);
1232 result = fchown(fsp->fh->fd, uid, gid);
1233 END_PROFILE(syscall_fchown);
1234 return result;
1235 #else
1236 errno = ENOSYS;
1237 return -1;
1238 #endif
1239 }
1240
1241 static int vfswrap_lchown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
1242 {
1243 int result;
1244
1245 START_PROFILE(syscall_lchown);
1246 result = lchown(path, uid, gid);
1247 END_PROFILE(syscall_lchown);
1248 return result;
1249 }
1250
1251 static int vfswrap_chdir(vfs_handle_struct *handle, const char *path)
1252 {
1253 int result;
1254
1255 START_PROFILE(syscall_chdir);
1256 result = chdir(path);
1257 END_PROFILE(syscall_chdir);
1258 return result;
1259 }
1260
1261 static char *vfswrap_getwd(vfs_handle_struct *handle)
1262 {
1263 char *result;
1264
1265 START_PROFILE(syscall_getwd);
1266 result = sys_getwd();
1267 END_PROFILE(syscall_getwd);
1268 return result;
1269 }
1270
1271 /*********************************************************************
1272 nsec timestamp resolution call. Convert down to whatever the underlying
1273 system will support.
1274 **********************************************************************/
1275
1276 static int vfswrap_ntimes(vfs_handle_struct *handle,
1277 const struct smb_filename *smb_fname,
1278 struct smb_file_time *ft)
1279 {
1280 int result = -1;
1281
1282 START_PROFILE(syscall_ntimes);
1283
1284 if (smb_fname->stream_name) {
1285 errno = ENOENT;
1286 goto out;
1287 }
1288
1289 if (ft != NULL) {
1290 if (null_timespec(ft->atime)) {
1291 ft->atime= smb_fname->st.st_ex_atime;
1292 }
1293
1294 if (null_timespec(ft->mtime)) {
1295 ft->mtime = smb_fname->st.st_ex_mtime;
1296 }
1297
1298 if (!null_timespec(ft->create_time)) {
1299 set_create_timespec_ea(handle->conn,
1300 smb_fname,
1301 ft->create_time);
1302 }
1303
1304 if ((timespec_compare(&ft->atime,
1305 &smb_fname->st.st_ex_atime) == 0) &&
1306 (timespec_compare(&ft->mtime,
1307 &smb_fname->st.st_ex_mtime) == 0)) {
1308 return 0;
1309 }
1310 }
1311
1312 #if defined(HAVE_UTIMENSAT)
1313 if (ft != NULL) {
1314 struct timespec ts[2];
1315 ts[0] = ft->atime;
1316 ts[1] = ft->mtime;
1317 result = utimensat(AT_FDCWD, smb_fname->base_name, ts, 0);
1318 } else {
1319 result = utimensat(AT_FDCWD, smb_fname->base_name, NULL, 0);
1320 }
1321 if (!((result == -1) && (errno == ENOSYS))) {
1322 goto out;
1323 }
1324 #endif
1325 #if defined(HAVE_UTIMES)
1326 if (ft != NULL) {
1327 struct timeval tv[2];
1328 tv[0] = convert_timespec_to_timeval(ft->atime);
1329 tv[1] = convert_timespec_to_timeval(ft->mtime);
1330 result = utimes(smb_fname->base_name, tv);
1331 } else {
1332 result = utimes(smb_fname->base_name, NULL);
1333 }
1334 if (!((result == -1) && (errno == ENOSYS))) {
1335 goto out;
1336 }
1337 #endif
1338 #if defined(HAVE_UTIME)
1339 if (ft != NULL) {
1340 struct utimbuf times;
1341 times.actime = convert_timespec_to_time_t(ft->atime);
1342 times.modtime = convert_timespec_to_time_t(ft->mtime);
1343 result = utime(smb_fname->base_name, &times);
1344 } else {
1345 result = utime(smb_fname->base_name, NULL);
1346 }
1347 if (!((result == -1) && (errno == ENOSYS))) {
1348 goto out;
1349 }
1350 #endif
1351 errno = ENOSYS;
1352 result = -1;
1353
1354 out:
1355 END_PROFILE(syscall_ntimes);
1356 return result;
1357 }
1358
1359 /*********************************************************************
1360 A version of ftruncate that will write the space on disk if strict
1361 allocate is set.
1362 **********************************************************************/
1363
1364 static int strict_allocate_ftruncate(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T len)
1365 {
1366 SMB_OFF_T space_to_write;
1367 uint64_t space_avail;
1368 uint64_t bsize,dfree,dsize;
1369 int ret;
1370 NTSTATUS status;
1371 SMB_STRUCT_STAT *pst;
1372
1373 status = vfs_stat_fsp(fsp);
1374 if (!NT_STATUS_IS_OK(status)) {
1375 return -1;
1376 }
1377 pst = &fsp->fsp_name->st;
1378
1379 #ifdef S_ISFIFO
1380 if (S_ISFIFO(pst->st_ex_mode))
1381 return 0;
1382 #endif
1383
1384 if (pst->st_ex_size == len)
1385 return 0;
1386
1387 /* Shrink - just ftruncate. */
1388 if (pst->st_ex_size > len)
1389 return sys_ftruncate(fsp->fh->fd, len);
1390
1391 space_to_write = len - pst->st_ex_size;
1392
1393 /* for allocation try fallocate first. This can fail on some
1394 platforms e.g. when the filesystem doesn't support it and no
1395 emulation is being done by the libc (like on AIX with JFS1). In that
1396 case we do our own emulation. fallocate implementations can
1397 return ENOTSUP or EINVAL in cases like that. */
1398 ret = SMB_VFS_FALLOCATE(fsp, VFS_FALLOCATE_EXTEND_SIZE,
1399 pst->st_ex_size, space_to_write);
1400 if (ret == ENOSPC) {
1401 errno = ENOSPC;
1402 return -1;
1403 }
1404 if (ret == 0) {
1405 return 0;
1406 }
1407 DEBUG(10,("strict_allocate_ftruncate: SMB_VFS_FALLOCATE failed with "
1408 "error %d. Falling back to slow manual allocation\n", ret));
1409
1410 /* available disk space is enough or not? */
1411 space_avail = get_dfree_info(fsp->conn,
1412 fsp->fsp_name->base_name, false,
1413 &bsize,&dfree,&dsize);
1414 /* space_avail is 1k blocks */
1415 if (space_avail == (uint64_t)-1 ||
1416 ((uint64_t)space_to_write/1024 > space_avail) ) {
1417 errno = ENOSPC;
1418 return -1;
1419 }
1420
1421 /* Write out the real space on disk. */
1422 ret = vfs_slow_fallocate(fsp, pst->st_ex_size, space_to_write);
1423 if (ret != 0) {
1424 errno = ret;
1425 ret = -1;
1426 }
1427
1428 return 0;
1429 }
1430
1431 static int vfswrap_ftruncate(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T len)
1432 {
1433 int result = -1;
1434 SMB_STRUCT_STAT *pst;
1435 NTSTATUS status;
1436 char c = 0;
1437
1438 START_PROFILE(syscall_ftruncate);
1439
1440 if (lp_strict_allocate(SNUM(fsp->conn)) && !fsp->is_sparse) {
1441 result = strict_allocate_ftruncate(handle, fsp, len);
1442 END_PROFILE(syscall_ftruncate);
1443 return result;
1444 }
1445
1446 /* we used to just check HAVE_FTRUNCATE_EXTEND and only use
1447 sys_ftruncate if the system supports it. Then I discovered that
1448 you can have some filesystems that support ftruncate
1449 expansion and some that don't! On Linux fat can't do
1450 ftruncate extend but ext2 can. */
1451
1452 result = sys_ftruncate(fsp->fh->fd, len);
1453 if (result == 0)
1454 goto done;
1455
1456 /* According to W. R. Stevens advanced UNIX prog. Pure 4.3 BSD cannot
1457 extend a file with ftruncate. Provide alternate implementation
1458 for this */
1459
1460 /* Do an fstat to see if the file is longer than the requested
1461 size in which case the ftruncate above should have
1462 succeeded or shorter, in which case seek to len - 1 and
1463 write 1 byte of zero */
1464 status = vfs_stat_fsp(fsp);
1465 if (!NT_STATUS_IS_OK(status)) {
1466 goto done;
1467 }
1468 pst = &fsp->fsp_name->st;
1469
1470 #ifdef S_ISFIFO
1471 if (S_ISFIFO(pst->st_ex_mode)) {
1472 result = 0;
1473 goto done;
1474 }
1475 #endif
1476
1477 if (pst->st_ex_size == len) {
1478 result = 0;
1479 goto done;
1480 }
1481
1482 if (pst->st_ex_size > len) {
1483 /* the sys_ftruncate should have worked */
1484 goto done;
1485 }
1486
1487 if (SMB_VFS_PWRITE(fsp, &c, 1, len-1)!=1) {
1488 goto done;
1489 }
1490
1491 result = 0;
1492
1493 done:
1494
1495 END_PROFILE(syscall_ftruncate);
1496 return result;
1497 }
1498
1499 static int vfswrap_fallocate(vfs_handle_struct *handle,
1500 files_struct *fsp,
1501 enum vfs_fallocate_mode mode,
1502 SMB_OFF_T offset,
1503 SMB_OFF_T len)
1504 {
1505 int result;
1506
1507 START_PROFILE(syscall_fallocate);
1508 if (mode == VFS_FALLOCATE_EXTEND_SIZE) {
1509 result = sys_posix_fallocate(fsp->fh->fd, offset, len);
1510 } else if (mode == VFS_FALLOCATE_KEEP_SIZE) {
1511 result = sys_fallocate(fsp->fh->fd, mode, offset, len);
1512 } else {
1513 errno = EINVAL;
1514 result = -1;
1515 }
1516 END_PROFILE(syscall_fallocate);
1517 return result;
1518 }
1519
1520 static bool vfswrap_lock(vfs_handle_struct *handle, files_struct *fsp, int op, SMB_OFF_T offset, SMB_OFF_T count, int type)
1521 {
1522 bool result;
1523
1524 START_PROFILE(syscall_fcntl_lock);
1525 result = fcntl_lock(fsp->fh->fd, op, offset, count, type);
1526 END_PROFILE(syscall_fcntl_lock);
1527 return result;
1528 }
1529
1530 static int vfswrap_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
1531 uint32 share_mode, uint32 access_mask)
1532 {
1533 START_PROFILE(syscall_kernel_flock);
1534 kernel_flock(fsp->fh->fd, share_mode, access_mask);
1535 END_PROFILE(syscall_kernel_flock);
1536 return 0;
1537 }
1538
1539 static bool vfswrap_getlock(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid)
1540 {
1541 bool result;
1542
1543 START_PROFILE(syscall_fcntl_getlock);
1544 result = fcntl_getlock(fsp->fh->fd, poffset, pcount, ptype, ppid);
1545 END_PROFILE(syscall_fcntl_getlock);
1546 return result;
1547 }
1548
1549 static int vfswrap_linux_setlease(vfs_handle_struct *handle, files_struct *fsp,
1550 int leasetype)
1551 {
1552 int result = -1;
1553
1554 START_PROFILE(syscall_linux_setlease);
1555
1556 #ifdef HAVE_KERNEL_OPLOCKS_LINUX
1557 /* first set the signal handler */
1558 if(linux_set_lease_sighandler(fsp->fh->fd) == -1) {
1559 return -1;
1560 }
1561
1562 result = linux_setlease(fsp->fh->fd, leasetype);
1563 #else
1564 errno = ENOSYS;
1565 #endif
1566 END_PROFILE(syscall_linux_setlease);
1567 return result;
1568 }
1569
1570 static int vfswrap_symlink(vfs_handle_struct *handle, const char *oldpath, const char *newpath)
1571 {
1572 int result;
1573
1574 START_PROFILE(syscall_symlink);
1575 result = symlink(oldpath, newpath);
1576 END_PROFILE(syscall_symlink);
1577 return result;
1578 }
1579
1580 static int vfswrap_readlink(vfs_handle_struct *handle, const char *path, char *buf, size_t bufsiz)
1581 {
1582 int result;
1583
1584 START_PROFILE(syscall_readlink);
1585 result = readlink(path, buf, bufsiz);
1586 END_PROFILE(syscall_readlink);
1587 return result;
1588 }
1589
1590 static int vfswrap_link(vfs_handle_struct *handle, const char *oldpath, const char *newpath)
1591 {
1592 int result;
1593
1594 START_PROFILE(syscall_link);
1595 result = link(oldpath, newpath);
1596 END_PROFILE(syscall_link);
1597 return result;
1598 }
1599
1600 static int vfswrap_mknod(vfs_handle_struct *handle, const char *pathname, mode_t mode, SMB_DEV_T dev)
1601 {
1602 int result;
1603
1604 START_PROFILE(syscall_mknod);
1605 result = sys_mknod(pathname, mode, dev);
1606 END_PROFILE(syscall_mknod);
1607 return result;
1608 }
1609
1610 static char *vfswrap_realpath(vfs_handle_struct *handle, const char *path)
1611 {
1612 char *result;
1613
1614 START_PROFILE(syscall_realpath);
1615 #ifdef REALPATH_TAKES_NULL
1616 result = realpath(path, NULL);
1617 #else
1618 result = SMB_MALLOC_ARRAY(char, PATH_MAX+1);
1619 if (result) {
1620 char *resolved_path = realpath(path, result);
1621 if (!resolved_path) {
1622 SAFE_FREE(result);
1623 } else {
1624 /* SMB_ASSERT(result == resolved_path) ? */
1625 result = resolved_path;
1626 }
1627 }
1628 #endif
1629 END_PROFILE(syscall_realpath);
1630 return result;
1631 }
1632
1633 static NTSTATUS vfswrap_notify_watch(vfs_handle_struct *vfs_handle,
1634 struct sys_notify_context *ctx,
1635 struct notify_entry *e,
1636 void (*callback)(struct sys_notify_context *ctx,
1637 void *private_data,
1638 struct notify_event *ev),
1639 void *private_data, void *handle)
1640 {
1641 /*
1642 * So far inotify is the only supported default notify mechanism. If
1643 * another platform like the the BSD's or a proprietary Unix comes
1644 * along and wants another default, we can play the same trick we
1645 * played with Posix ACLs.
1646 *
1647 * Until that is the case, hard-code inotify here.
1648 */
1649 #ifdef HAVE_INOTIFY
1650 if (lp_kernel_change_notify(ctx->conn->params)) {
1651 return inotify_watch(ctx, e, callback, private_data, handle);
1652 }
1653 #endif
1654 /*
1655 * Do nothing, leave everything to notify_internal.c
1656 */
1657 return NT_STATUS_OK;
1658 }
1659
1660 static int vfswrap_chflags(vfs_handle_struct *handle, const char *path,
1661 unsigned int flags)
1662 {
1663 #ifdef HAVE_CHFLAGS
1664 return chflags(path, flags);
1665 #else
1666 errno = ENOSYS;
1667 return -1;
1668 #endif
1669 }
1670
1671 static struct file_id vfswrap_file_id_create(struct vfs_handle_struct *handle,
1672 const SMB_STRUCT_STAT *sbuf)
1673 {
1674 struct file_id key;
1675
1676 /* the ZERO_STRUCT ensures padding doesn't break using the key as a
1677 * blob */
1678 ZERO_STRUCT(key);
1679
1680 key.devid = sbuf->st_ex_dev;
1681 key.inode = sbuf->st_ex_ino;
1682 /* key.extid is unused by default. */
1683
1684 return key;
1685 }
1686
1687 static NTSTATUS vfswrap_streaminfo(vfs_handle_struct *handle,
1688 struct files_struct *fsp,
1689 const char *fname,
1690 TALLOC_CTX *mem_ctx,
1691 unsigned int *pnum_streams,
1692 struct stream_struct **pstreams)
1693 {
1694 SMB_STRUCT_STAT sbuf;
1695 struct stream_struct *tmp_streams = NULL;
1696 int ret;
1697
1698 if ((fsp != NULL) && (fsp->is_directory)) {
1699 /*
1700 * No default streams on directories
1701 */
1702 goto done;
1703 }
1704
1705 if ((fsp != NULL) && (fsp->fh->fd != -1)) {
1706 ret = SMB_VFS_FSTAT(fsp, &sbuf);
1707 }
1708 else {
1709 struct smb_filename smb_fname;
1710
1711 ZERO_STRUCT(smb_fname);
1712 smb_fname.base_name = discard_const_p(char, fname);
1713
1714 if (lp_posix_pathnames()) {
1715 ret = SMB_VFS_LSTAT(handle->conn, &smb_fname);
1716 } else {
1717 ret = SMB_VFS_STAT(handle->conn, &smb_fname);
1718 }
1719 sbuf = smb_fname.st;
1720 }
1721
1722 if (ret == -1) {
1723 return map_nt_error_from_unix(errno);
1724 }
1725
1726 if (S_ISDIR(sbuf.st_ex_mode)) {
1727 goto done;
1728 }
1729
1730 tmp_streams = talloc_realloc(mem_ctx, *pstreams, struct stream_struct,
1731 (*pnum_streams) + 1);
1732 if (tmp_streams == NULL) {
1733 return NT_STATUS_NO_MEMORY;
1734 }
1735 tmp_streams[*pnum_streams].name = talloc_strdup(tmp_streams, "::$DATA");
1736 if (tmp_streams[*pnum_streams].name == NULL) {
1737 return NT_STATUS_NO_MEMORY;
1738 }
1739 tmp_streams[*pnum_streams].size = sbuf.st_ex_size;
1740 tmp_streams[*pnum_streams].alloc_size = SMB_VFS_GET_ALLOC_SIZE(handle->conn, fsp, &sbuf);
1741
1742 *pnum_streams += 1;
1743 *pstreams = tmp_streams;
1744 done:
1745 return NT_STATUS_OK;
1746 }
1747
1748 static int vfswrap_get_real_filename(struct vfs_handle_struct *handle,
1749 const char *path,
1750 const char *name,
1751 TALLOC_CTX *mem_ctx,
1752 char **found_name)
1753 {
1754 /*
1755 * Don't fall back to get_real_filename so callers can differentiate
1756 * between a full directory scan and an actual case-insensitive stat.
1757 */
1758 errno = EOPNOTSUPP;
1759 return -1;
1760 }
1761
1762 static const char *vfswrap_connectpath(struct vfs_handle_struct *handle,
1763 const char *fname)
1764 {
1765 return handle->conn->connectpath;
1766 }
1767
1768 static NTSTATUS vfswrap_brl_lock_windows(struct vfs_handle_struct *handle,
1769 struct byte_range_lock *br_lck,
1770 struct lock_struct *plock,
1771 bool blocking_lock,
1772 struct blocking_lock_record *blr)
1773 {
1774 SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
1775
1776 /* Note: blr is not used in the default implementation. */
1777 return brl_lock_windows_default(br_lck, plock, blocking_lock);
1778 }
1779
1780 static bool vfswrap_brl_unlock_windows(struct vfs_handle_struct *handle,
1781 struct messaging_context *msg_ctx,
1782 struct byte_range_lock *br_lck,
1783 const struct lock_struct *plock)
1784 {
1785 SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
1786
1787 return brl_unlock_windows_default(msg_ctx, br_lck, plock);
1788 }
1789
1790 static bool vfswrap_brl_cancel_windows(struct vfs_handle_struct *handle,
1791 struct byte_range_lock *br_lck,
1792 struct lock_struct *plock,
1793 struct blocking_lock_record *blr)
1794 {
1795 SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
1796
1797 /* Note: blr is not used in the default implementation. */
1798 return brl_lock_cancel_default(br_lck, plock);
1799 }
1800
1801 static bool vfswrap_strict_lock(struct vfs_handle_struct *handle,
1802 files_struct *fsp,
1803 struct lock_struct *plock)
1804 {
1805 SMB_ASSERT(plock->lock_type == READ_LOCK ||
1806 plock->lock_type == WRITE_LOCK);
1807
1808 return strict_lock_default(fsp, plock);
1809 }
1810
1811 static void vfswrap_strict_unlock(struct vfs_handle_struct *handle,
1812 files_struct *fsp,
1813 struct lock_struct *plock)
1814 {
1815 SMB_ASSERT(plock->lock_type == READ_LOCK ||
1816 plock->lock_type == WRITE_LOCK);
1817
1818 strict_unlock_default(fsp, plock);
1819 }
1820
1821 /* NT ACL operations. */
1822
1823 static NTSTATUS vfswrap_fget_nt_acl(vfs_handle_struct *handle,
1824 files_struct *fsp,
1825 uint32 security_info,
1826 struct security_descriptor **ppdesc)
1827 {
1828 NTSTATUS result;
1829
1830 START_PROFILE(fget_nt_acl);
1831 result = posix_fget_nt_acl(fsp, security_info, ppdesc);
1832 END_PROFILE(fget_nt_acl);
1833 return result;
1834 }
1835
1836 static NTSTATUS vfswrap_get_nt_acl(vfs_handle_struct *handle,
1837 const char *name,
1838 uint32 security_info,
1839 struct security_descriptor **ppdesc)
1840 {
1841 NTSTATUS result;
1842
1843 START_PROFILE(get_nt_acl);
1844 result = posix_get_nt_acl(handle->conn, name, security_info, ppdesc);
1845 END_PROFILE(get_nt_acl);
1846 return result;
1847 }
1848
1849 static NTSTATUS vfswrap_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const struct security_descriptor *psd)
1850 {
1851 NTSTATUS result;
1852
1853 START_PROFILE(fset_nt_acl);
1854 result = set_nt_acl(fsp, security_info_sent, psd);
1855 END_PROFILE(fset_nt_acl);
1856 return result;
1857 }
1858
1859 static int vfswrap_chmod_acl(vfs_handle_struct *handle, const char *name, mode_t mode)
1860 {
1861 #ifdef HAVE_NO_ACL
1862 errno = ENOSYS;
1863 return -1;
1864 #else
1865 int result;
1866
1867 START_PROFILE(chmod_acl);
1868 result = chmod_acl(handle->conn, name, mode);
1869 END_PROFILE(chmod_acl);
1870 return result;
1871 #endif
1872 }
1873
1874 static int vfswrap_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
1875 {
1876 #ifdef HAVE_NO_ACL
1877 errno = ENOSYS;
1878 return -1;
1879 #else
1880 int result;
1881
1882 START_PROFILE(fchmod_acl);
1883 result = fchmod_acl(fsp, mode);
1884 END_PROFILE(fchmod_acl);
1885 return result;
1886 #endif
1887 }
1888
1889 static int vfswrap_sys_acl_get_entry(vfs_handle_struct *handle, SMB_ACL_T theacl, int entry_id, SMB_ACL_ENTRY_T *entry_p)
1890 {
1891 return sys_acl_get_entry(theacl, entry_id, entry_p);
1892 }
1893
1894 static int vfswrap_sys_acl_get_tag_type(vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_TAG_T *tag_type_p)
1895 {
1896 return sys_acl_get_tag_type(entry_d, tag_type_p);
1897 }
1898
1899 static int vfswrap_sys_acl_get_permset(vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_PERMSET_T *permset_p)
1900 {
1901 return sys_acl_get_permset(entry_d, permset_p);
1902 }
1903
1904 static void * vfswrap_sys_acl_get_qualifier(vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d)
1905 {
1906 return sys_acl_get_qualifier(entry_d);
1907 }
1908
1909 static SMB_ACL_T vfswrap_sys_acl_get_file(vfs_handle_struct *handle, const char *path_p, SMB_ACL_TYPE_T type)
1910 {
1911 return sys_acl_get_file(handle, path_p, type);
1912 }
1913
1914 static SMB_ACL_T vfswrap_sys_acl_get_fd(vfs_handle_struct *handle, files_struct *fsp)
1915 {
1916 return sys_acl_get_fd(handle, fsp);
1917 }
1918
1919 static int vfswrap_sys_acl_clear_perms(vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset)
1920 {
1921 return sys_acl_clear_perms(permset);
1922 }
1923
1924 static int vfswrap_sys_acl_add_perm(vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm)
1925 {
1926 return sys_acl_add_perm(permset, perm);
1927 }
1928
1929 static char * vfswrap_sys_acl_to_text(vfs_handle_struct *handle, SMB_ACL_T theacl, ssize_t *plen)
1930 {
1931 return sys_acl_to_text(theacl, plen);
1932 }
1933
1934 static SMB_ACL_T vfswrap_sys_acl_init(vfs_handle_struct *handle, int count)
1935 {
1936 return sys_acl_init(count);
1937 }
1938
1939 static int vfswrap_sys_acl_create_entry(vfs_handle_struct *handle, SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry)
1940 {
1941 return sys_acl_create_entry(pacl, pentry);
1942 }
1943
1944 static int vfswrap_sys_acl_set_tag_type(vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_TAG_T tagtype)
1945 {
1946 return sys_acl_set_tag_type(entry, tagtype);
1947 }
1948
1949 static int vfswrap_sys_acl_set_qualifier(vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, void *qual)
1950 {
1951 return sys_acl_set_qualifier(entry, qual);
1952 }
1953
1954 static int vfswrap_sys_acl_set_permset(vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_PERMSET_T permset)
1955 {
1956 return sys_acl_set_permset(entry, permset);
1957 }
1958
1959 static int vfswrap_sys_acl_valid(vfs_handle_struct *handle, SMB_ACL_T theacl )
1960 {
1961 return sys_acl_valid(theacl );
1962 }
1963
1964 static int vfswrap_sys_acl_set_file(vfs_handle_struct *handle, const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl)
1965 {
1966 return sys_acl_set_file(handle, name, acltype, theacl);
1967 }
1968
1969 static int vfswrap_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp, SMB_ACL_T theacl)
1970 {
1971 return sys_acl_set_fd(handle, fsp, theacl);
1972 }
1973
1974 static int vfswrap_sys_acl_delete_def_file(vfs_handle_struct *handle, const char *path)
1975 {
1976 return sys_acl_delete_def_file(handle, path);
1977 }
1978
1979 static int vfswrap_sys_acl_get_perm(vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm)
1980 {
1981 return sys_acl_get_perm(permset, perm);
1982 }
1983
1984 static int vfswrap_sys_acl_free_text(vfs_handle_struct *handle, char *text)
1985 {
1986 return sys_acl_free_text(text);
1987 }
1988
1989 static int vfswrap_sys_acl_free_acl(vfs_handle_struct *handle, SMB_ACL_T posix_acl)
1990 {
1991 return sys_acl_free_acl(posix_acl);
1992 }
1993
1994 static int vfswrap_sys_acl_free_qualifier(vfs_handle_struct *handle, void *qualifier, SMB_ACL_TAG_T tagtype)
1995 {
1996 return sys_acl_free_qualifier(qualifier, tagtype);
1997 }
1998
1999 /****************************************************************
2000 Extended attribute operations.
2001 *****************************************************************/
2002
2003 static ssize_t vfswrap_getxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
2004 {
2005 return sys_getxattr(path, name, value, size);
2006 }
2007
2008 static ssize_t vfswrap_lgetxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
2009 {
2010 return sys_lgetxattr(path, name, value, size);
2011 }
2012
2013 static ssize_t vfswrap_fgetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size)
2014 {
2015 return sys_fgetxattr(fsp->fh->fd, name, value, size);
2016 }
2017
2018 static ssize_t vfswrap_listxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
2019 {
2020 return sys_listxattr(path, list, size);
2021 }
2022
2023 static ssize_t vfswrap_llistxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
2024 {
2025 return sys_llistxattr(path, list, size);
2026 }
2027
2028 static ssize_t vfswrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size)
2029 {
2030 return sys_flistxattr(fsp->fh->fd, list, size);
2031 }
2032
2033 static int vfswrap_removexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
2034 {
2035 return sys_removexattr(path, name);
2036 }
2037
2038 static int vfswrap_lremovexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
2039 {
2040 return sys_lremovexattr(path, name);
2041 }
2042
2043 static int vfswrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name)
2044 {
2045 return sys_fremovexattr(fsp->fh->fd, name);
2046 }
2047
2048 static int vfswrap_setxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
2049 {
2050 return sys_setxattr(path, name, value, size, flags);
2051 }
2052
2053 static int vfswrap_lsetxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
2054 {
2055 return sys_lsetxattr(path, name, value, size, flags);
2056 }
2057
2058 static int vfswrap_fsetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags)
2059 {
2060 return sys_fsetxattr(fsp->fh->fd, name, value, size, flags);
2061 }
2062
2063 static int vfswrap_aio_read(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
2064 {
2065 int ret;
2066 /*
2067 * aio_read must be done as root, because in the glibc aio
2068 * implementation the helper thread needs to be able to send a signal
2069 * to the main thread, even when it has done a seteuid() to a
2070 * different user.
2071 */
2072 become_root();
2073 ret = sys_aio_read(aiocb);
2074 unbecome_root();
2075 return ret;
2076 }
2077
2078 static int vfswrap_aio_write(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
2079 {
2080 int ret;
2081 /*
2082 * aio_write must be done as root, because in the glibc aio
2083 * implementation the helper thread needs to be able to send a signal
2084 * to the main thread, even when it has done a seteuid() to a
2085 * different user.
2086 */
2087 become_root();
2088 ret = sys_aio_write(aiocb);
2089 unbecome_root();
2090 return ret;
2091 }
2092
2093 static ssize_t vfswrap_aio_return(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
2094 {
2095 return sys_aio_return(aiocb);
2096 }
2097
2098 static int vfswrap_aio_cancel(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
2099 {
2100 return sys_aio_cancel(fsp->fh->fd, aiocb);
2101 }
2102
2103 static int vfswrap_aio_error(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
2104 {
2105 return sys_aio_error(aiocb);
2106 }
2107
2108 static int vfswrap_aio_fsync(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_STRUCT_AIOCB *aiocb)
2109 {
2110 return sys_aio_fsync(op, aiocb);
2111 }
2112
2113 static int vfswrap_aio_suspend(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_AIOCB * const aiocb[], int n, const struct timespec *timeout)
2114 {
2115 return sys_aio_suspend(aiocb, n, timeout);
2116 }
2117
2118 static bool vfswrap_aio_force(struct vfs_handle_struct *handle, struct files_struct *fsp)
2119 {
2120 return false;
2121 }
2122
2123 static bool vfswrap_is_offline(struct vfs_handle_struct *handle,
2124 const struct smb_filename *fname,
2125 SMB_STRUCT_STAT *sbuf)
2126 {
2127 NTSTATUS status;
2128 char *path;
2129 bool offline = false;
2130
2131 if (ISDOT(fname->base_name) || ISDOTDOT(fname->base_name)) {
2132 return false;
2133 }
2134
2135 if (!lp_dmapi_support(SNUM(handle->conn)) || !dmapi_have_session()) {
2136 #if defined(ENOTSUP)
2137 errno = ENOTSUP;
2138 #endif
2139 return false;
2140 }
2141
2142 status = get_full_smb_filename(talloc_tos(), fname, &path);
2143 if (!NT_STATUS_IS_OK(status)) {
2144 errno = map_errno_from_nt_status(status);
2145 return false;
2146 }
2147
2148 offline = (dmapi_file_flags(path) & FILE_ATTRIBUTE_OFFLINE) != 0;
2149
2150 TALLOC_FREE(path);
2151
2152 return offline;
2153 }
2154
2155 static int vfswrap_set_offline(struct vfs_handle_struct *handle,
2156 const struct smb_filename *fname)
2157 {
2158 /* We don't know how to set offline bit by default, needs to be overriden in the vfs modules */
2159 #if defined(ENOTSUP)
2160 errno = ENOTSUP;
2161 #endif
2162 return -1;
2163 }
2164
2165 static struct vfs_fn_pointers vfs_default_fns = {
2166 /* Disk operations */
2167
2168 .connect_fn = vfswrap_connect,
2169 .disconnect_fn = vfswrap_disconnect,
2170 .disk_free_fn = vfswrap_disk_free,
2171 .get_quota_fn = vfswrap_get_quota,
2172 .set_quota_fn = vfswrap_set_quota,
2173 .get_shadow_copy_data_fn = vfswrap_get_shadow_copy_data,
2174 .statvfs_fn = vfswrap_statvfs,
2175 .fs_capabilities_fn = vfswrap_fs_capabilities,
2176 .get_dfs_referrals_fn = vfswrap_get_dfs_referrals,
2177
2178 /* Directory operations */
2179
2180 .opendir_fn = vfswrap_opendir,
2181 .fdopendir_fn = vfswrap_fdopendir,
2182 .readdir_fn = vfswrap_readdir,
2183 .seekdir_fn = vfswrap_seekdir,
2184 .telldir_fn = vfswrap_telldir,
2185 .rewind_dir_fn = vfswrap_rewinddir,
2186 .mkdir_fn = vfswrap_mkdir,
2187 .rmdir_fn = vfswrap_rmdir,
2188 .closedir_fn = vfswrap_closedir,
2189 .init_search_op_fn = vfswrap_init_search_op,
2190
2191 /* File operations */
2192
2193 .open_fn = vfswrap_open,
2194 .create_file_fn = vfswrap_create_file,
2195 .close_fn = vfswrap_close,
2196 .read_fn = vfswrap_read,
2197 .pread_fn = vfswrap_pread,
2198 .write_fn = vfswrap_write,
2199 .pwrite_fn = vfswrap_pwrite,
2200 .lseek_fn = vfswrap_lseek,
2201 .sendfile_fn = vfswrap_sendfile,
2202 .recvfile_fn = vfswrap_recvfile,
2203 .rename_fn = vfswrap_rename,
2204 .fsync_fn = vfswrap_fsync,
2205 .stat_fn = vfswrap_stat,
2206 .fstat_fn = vfswrap_fstat,
2207 .lstat_fn = vfswrap_lstat,
2208 .get_alloc_size_fn = vfswrap_get_alloc_size,
2209 .unlink_fn = vfswrap_unlink,
2210 .chmod_fn = vfswrap_chmod,
2211 .fchmod_fn = vfswrap_fchmod,
2212 .chown_fn = vfswrap_chown,
2213 .fchown_fn = vfswrap_fchown,
2214 .lchown_fn = vfswrap_lchown,
2215 .chdir_fn = vfswrap_chdir,
2216 .getwd_fn = vfswrap_getwd,
2217 .ntimes_fn = vfswrap_ntimes,
2218 .ftruncate_fn = vfswrap_ftruncate,
2219 .fallocate_fn = vfswrap_fallocate,
2220 .lock_fn = vfswrap_lock,
2221 .kernel_flock_fn = vfswrap_kernel_flock,
2222 .linux_setlease_fn = vfswrap_linux_setlease,
2223 .getlock_fn = vfswrap_getlock,
2224 .symlink_fn = vfswrap_symlink,
2225 .readlink_fn = vfswrap_readlink,
2226 .link_fn = vfswrap_link,
2227 .mknod_fn = vfswrap_mknod,
2228 .realpath_fn = vfswrap_realpath,
2229 .notify_watch_fn = vfswrap_notify_watch,
2230 .chflags_fn = vfswrap_chflags,
2231 .file_id_create_fn = vfswrap_file_id_create,
2232 .streaminfo_fn = vfswrap_streaminfo,
2233 .get_real_filename_fn = vfswrap_get_real_filename,
2234 .connectpath_fn = vfswrap_connectpath,
2235 .brl_lock_windows_fn = vfswrap_brl_lock_windows,
2236 .brl_unlock_windows_fn = vfswrap_brl_unlock_windows,
2237 .brl_cancel_windows_fn = vfswrap_brl_cancel_windows,
2238 .strict_lock_fn = vfswrap_strict_lock,
2239 .strict_unlock_fn = vfswrap_strict_unlock,
2240 .translate_name_fn = vfswrap_translate_name,
2241 .fsctl_fn = vfswrap_fsctl,
2242
2243 /* NT ACL operations. */
2244
2245 .fget_nt_acl_fn = vfswrap_fget_nt_acl,
2246 .get_nt_acl_fn = vfswrap_get_nt_acl,
2247 .fset_nt_acl_fn = vfswrap_fset_nt_acl,
2248
2249 /* POSIX ACL operations. */
2250
2251 .chmod_acl_fn = vfswrap_chmod_acl,
2252 .fchmod_acl_fn = vfswrap_fchmod_acl,
2253
2254 .sys_acl_get_entry_fn = vfswrap_sys_acl_get_entry,
2255 .sys_acl_get_tag_type_fn = vfswrap_sys_acl_get_tag_type,
2256 .sys_acl_get_permset_fn = vfswrap_sys_acl_get_permset,
2257 .sys_acl_get_qualifier_fn = vfswrap_sys_acl_get_qualifier,
2258 .sys_acl_get_file_fn = vfswrap_sys_acl_get_file,
2259 .sys_acl_get_fd_fn = vfswrap_sys_acl_get_fd,
2260 .sys_acl_clear_perms_fn = vfswrap_sys_acl_clear_perms,
2261 .sys_acl_add_perm_fn = vfswrap_sys_acl_add_perm,
2262 .sys_acl_to_text_fn = vfswrap_sys_acl_to_text,
2263 .sys_acl_init_fn = vfswrap_sys_acl_init,
2264 .sys_acl_create_entry_fn = vfswrap_sys_acl_create_entry,
2265 .sys_acl_set_tag_type_fn = vfswrap_sys_acl_set_tag_type,
2266 .sys_acl_set_qualifier_fn = vfswrap_sys_acl_set_qualifier,
2267 .sys_acl_set_permset_fn = vfswrap_sys_acl_set_permset,
2268 .sys_acl_valid_fn = vfswrap_sys_acl_valid,
2269 .sys_acl_set_file_fn = vfswrap_sys_acl_set_file,
2270 .sys_acl_set_fd_fn = vfswrap_sys_acl_set_fd,
2271 .sys_acl_delete_def_file_fn = vfswrap_sys_acl_delete_def_file,
2272 .sys_acl_get_perm_fn = vfswrap_sys_acl_get_perm,
2273 .sys_acl_free_text_fn = vfswrap_sys_acl_free_text,
2274 .sys_acl_free_acl_fn = vfswrap_sys_acl_free_acl,
2275 .sys_acl_free_qualifier_fn = vfswrap_sys_acl_free_qualifier,
2276
2277 /* EA operations. */
2278 .getxattr_fn = vfswrap_getxattr,
2279 .lgetxattr_fn = vfswrap_lgetxattr,
2280 .fgetxattr_fn = vfswrap_fgetxattr,
2281 .listxattr_fn = vfswrap_listxattr,
2282 .llistxattr_fn = vfswrap_llistxattr,
2283 .flistxattr_fn = vfswrap_flistxattr,
2284 .removexattr_fn = vfswrap_removexattr,
2285 .lremovexattr_fn = vfswrap_lremovexattr,
2286 .fremovexattr_fn = vfswrap_fremovexattr,
2287 .setxattr_fn = vfswrap_setxattr,
2288 .lsetxattr_fn = vfswrap_lsetxattr,
2289 .fsetxattr_fn = vfswrap_fsetxattr,
2290
2291 /* aio operations */
2292 .aio_read_fn = vfswrap_aio_read,
2293 .aio_write_fn = vfswrap_aio_write,
2294 .aio_return_fn = vfswrap_aio_return,
2295 .aio_cancel_fn = vfswrap_aio_cancel,
2296 .aio_error_fn = vfswrap_aio_error,
2297 .aio_fsync_fn = vfswrap_aio_fsync,
2298 .aio_suspend_fn = vfswrap_aio_suspend,
2299 .aio_force_fn = vfswrap_aio_force,
2300
2301 /* offline operations */
2302 .is_offline_fn = vfswrap_is_offline,
2303 .set_offline_fn = vfswrap_set_offline
2304 };
2305
2306 NTSTATUS vfs_default_init(void);
2307 NTSTATUS vfs_default_init(void)
2308 {
2309 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
2310 DEFAULT_VFS_MODULE_NAME, &vfs_default_fns);
2311 }
2312
2313
reg import