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WHATSNEW: Add release notes for Samba 4.0.24.
[Samba.git] / source3 / modules / vfs_default.c
blobb31f4be0c47057db74995a3cf3044567cf390f25
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 "smbd/globals.h"
26 #include "ntioctl.h"
27 #include "smbprofile.h"
28 #include "../libcli/security/security.h"
29 #include "passdb/lookup_sid.h"
30 #include "source3/include/msdfs.h"
31 #include "librpc/gen_ndr/ndr_dfsblobs.h"
32 #include "lib/util/tevent_unix.h"
33 #include "lib/asys/asys.h"
34
35 #undef DBGC_CLASS
36 #define DBGC_CLASS DBGC_VFS
37
38 /* Check for NULL pointer parameters in vfswrap_* functions */
39
40 /* We don't want to have NULL function pointers lying around. Someone
41 is sure to try and execute them. These stubs are used to prevent
42 this possibility. */
43
44 static int vfswrap_connect(vfs_handle_struct *handle, const char *service, const char *user)
45 {
46 return 0; /* Return >= 0 for success */
47 }
48
49 static void vfswrap_disconnect(vfs_handle_struct *handle)
50 {
51 }
52
53 /* Disk operations */
54
55 static uint64_t vfswrap_disk_free(vfs_handle_struct *handle, const char *path, bool small_query, uint64_t *bsize,
56 uint64_t *dfree, uint64_t *dsize)
57 {
58 uint64_t result;
59
60 result = sys_disk_free(handle->conn, path, small_query, bsize, dfree, dsize);
61 return result;
62 }
63
64 static int vfswrap_get_quota(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
65 {
66 #ifdef HAVE_SYS_QUOTAS
67 int result;
68
69 START_PROFILE(syscall_get_quota);
70 result = sys_get_quota(handle->conn->connectpath, qtype, id, qt);
71 END_PROFILE(syscall_get_quota);
72 return result;
73 #else
74 errno = ENOSYS;
75 return -1;
76 #endif
77 }
78
79 static int vfswrap_set_quota(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
80 {
81 #ifdef HAVE_SYS_QUOTAS
82 int result;
83
84 START_PROFILE(syscall_set_quota);
85 result = sys_set_quota(handle->conn->connectpath, qtype, id, qt);
86 END_PROFILE(syscall_set_quota);
87 return result;
88 #else
89 errno = ENOSYS;
90 return -1;
91 #endif
92 }
93
94 static int vfswrap_get_shadow_copy_data(struct vfs_handle_struct *handle,
95 struct files_struct *fsp,
96 struct shadow_copy_data *shadow_copy_data,
97 bool labels)
98 {
99 errno = ENOSYS;
100 return -1; /* Not implemented. */
101 }
102
103 static int vfswrap_statvfs(struct vfs_handle_struct *handle, const char *path, vfs_statvfs_struct *statbuf)
104 {
105 return sys_statvfs(path, statbuf);
106 }
107
108 static uint32_t vfswrap_fs_capabilities(struct vfs_handle_struct *handle,
109 enum timestamp_set_resolution *p_ts_res)
110 {
111 connection_struct *conn = handle->conn;
112 uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
113 struct smb_filename *smb_fname_cpath = NULL;
114 struct vfs_statvfs_struct statbuf;
115 NTSTATUS status;
116 int ret;
117
118 ZERO_STRUCT(statbuf);
119 ret = sys_statvfs(conn->connectpath, &statbuf);
120 if (ret == 0) {
121 caps = statbuf.FsCapabilities;
122 }
123
124 *p_ts_res = TIMESTAMP_SET_SECONDS;
125
126 /* Work out what timestamp resolution we can
127 * use when setting a timestamp. */
128
129 status = create_synthetic_smb_fname(talloc_tos(),
130 conn->connectpath,
131 NULL,
132 NULL,
133 &smb_fname_cpath);
134 if (!NT_STATUS_IS_OK(status)) {
135 return caps;
136 }
137
138 ret = SMB_VFS_STAT(conn, smb_fname_cpath);
139 if (ret == -1) {
140 TALLOC_FREE(smb_fname_cpath);
141 return caps;
142 }
143
144 if (smb_fname_cpath->st.st_ex_mtime.tv_nsec ||
145 smb_fname_cpath->st.st_ex_atime.tv_nsec ||
146 smb_fname_cpath->st.st_ex_ctime.tv_nsec) {
147 /* If any of the normal UNIX directory timestamps
148 * have a non-zero tv_nsec component assume
149 * we might be able to set sub-second timestamps.
150 * See what filetime set primitives we have.
151 */
152 #if defined(HAVE_UTIMENSAT)
153 *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
154 #elif defined(HAVE_UTIMES)
155 /* utimes allows msec timestamps to be set. */
156 *p_ts_res = TIMESTAMP_SET_MSEC;
157 #elif defined(HAVE_UTIME)
158 /* utime only allows sec timestamps to be set. */
159 *p_ts_res = TIMESTAMP_SET_SECONDS;
160 #endif
161
162 DEBUG(10,("vfswrap_fs_capabilities: timestamp "
163 "resolution of %s "
164 "available on share %s, directory %s\n",
165 *p_ts_res == TIMESTAMP_SET_MSEC ? "msec" : "sec",
166 lp_servicename(talloc_tos(), conn->params->service),
167 conn->connectpath ));
168 }
169 TALLOC_FREE(smb_fname_cpath);
170 return caps;
171 }
172
173 static NTSTATUS vfswrap_get_dfs_referrals(struct vfs_handle_struct *handle,
174 struct dfs_GetDFSReferral *r)
175 {
176 struct junction_map *junction = NULL;
177 int consumedcnt = 0;
178 bool self_referral = false;
179 char *pathnamep = NULL;
180 char *local_dfs_path = NULL;
181 NTSTATUS status;
182 int i;
183 uint16_t max_referral_level = r->in.req.max_referral_level;
184
185 if (DEBUGLVL(10)) {
186 NDR_PRINT_IN_DEBUG(dfs_GetDFSReferral, r);
187 }
188
189 /* get the junction entry */
190 if (r->in.req.servername == NULL) {
191 return NT_STATUS_NOT_FOUND;
192 }
193
194 /*
195 * Trim pathname sent by client so it begins with only one backslash.
196 * Two backslashes confuse some dfs clients
197 */
198
199 local_dfs_path = talloc_strdup(r, r->in.req.servername);
200 if (local_dfs_path == NULL) {
201 return NT_STATUS_NO_MEMORY;
202 }
203 pathnamep = local_dfs_path;
204 while (IS_DIRECTORY_SEP(pathnamep[0]) &&
205 IS_DIRECTORY_SEP(pathnamep[1])) {
206 pathnamep++;
207 }
208
209 junction = talloc_zero(r, struct junction_map);
210 if (junction == NULL) {
211 return NT_STATUS_NO_MEMORY;
212 }
213
214 /* The following call can change cwd. */
215 status = get_referred_path(r, pathnamep,
216 !handle->conn->sconn->using_smb2,
217 junction, &consumedcnt, &self_referral);
218 if (!NT_STATUS_IS_OK(status)) {
219 vfs_ChDir(handle->conn, handle->conn->connectpath);
220 return status;
221 }
222 vfs_ChDir(handle->conn, handle->conn->connectpath);
223
224 if (!self_referral) {
225 pathnamep[consumedcnt] = '\0';
226
227 if (DEBUGLVL(3)) {
228 dbgtext("setup_dfs_referral: Path %s to "
229 "alternate path(s):",
230 pathnamep);
231 for (i=0; i < junction->referral_count; i++) {
232 dbgtext(" %s",
233 junction->referral_list[i].alternate_path);
234 }
235 dbgtext(".\n");
236 }
237 }
238
239 if (r->in.req.max_referral_level <= 2) {
240 max_referral_level = 2;
241 }
242 if (r->in.req.max_referral_level >= 3) {
243 max_referral_level = 3;
244 }
245
246 r->out.resp = talloc_zero(r, struct dfs_referral_resp);
247 if (r->out.resp == NULL) {
248 return NT_STATUS_NO_MEMORY;
249 }
250
251 r->out.resp->path_consumed = strlen_m(pathnamep) * 2;
252 r->out.resp->nb_referrals = junction->referral_count;
253
254 r->out.resp->header_flags = DFS_HEADER_FLAG_STORAGE_SVR;
255 if (self_referral) {
256 r->out.resp->header_flags |= DFS_HEADER_FLAG_REFERAL_SVR;
257 }
258
259 r->out.resp->referral_entries = talloc_zero_array(r,
260 struct dfs_referral_type,
261 r->out.resp->nb_referrals);
262 if (r->out.resp->referral_entries == NULL) {
263 return NT_STATUS_NO_MEMORY;
264 }
265
266 switch (max_referral_level) {
267 case 2:
268 for(i=0; i < junction->referral_count; i++) {
269 struct referral *ref = &junction->referral_list[i];
270 TALLOC_CTX *mem_ctx = r->out.resp->referral_entries;
271 struct dfs_referral_type *t =
272 &r->out.resp->referral_entries[i];
273 struct dfs_referral_v2 *v2 = &t->referral.v2;
274
275 t->version = 2;
276 v2->size = VERSION2_REFERRAL_SIZE;
277 if (self_referral) {
278 v2->server_type = DFS_SERVER_ROOT;
279 } else {
280 v2->server_type = DFS_SERVER_NON_ROOT;
281 }
282 v2->entry_flags = 0;
283 v2->proximity = ref->proximity;
284 v2->ttl = ref->ttl;
285 v2->DFS_path = talloc_strdup(mem_ctx, pathnamep);
286 if (v2->DFS_path == NULL) {
287 return NT_STATUS_NO_MEMORY;
288 }
289 v2->DFS_alt_path = talloc_strdup(mem_ctx, pathnamep);
290 if (v2->DFS_alt_path == NULL) {
291 return NT_STATUS_NO_MEMORY;
292 }
293 v2->netw_address = talloc_strdup(mem_ctx,
294 ref->alternate_path);
295 if (v2->netw_address == NULL) {
296 return NT_STATUS_NO_MEMORY;
297 }
298 }
299
300 break;
301 case 3:
302 for(i=0; i < junction->referral_count; i++) {
303 struct referral *ref = &junction->referral_list[i];
304 TALLOC_CTX *mem_ctx = r->out.resp->referral_entries;
305 struct dfs_referral_type *t =
306 &r->out.resp->referral_entries[i];
307 struct dfs_referral_v3 *v3 = &t->referral.v3;
308 struct dfs_normal_referral *r1 = &v3->referrals.r1;
309
310 t->version = 3;
311 v3->size = VERSION3_REFERRAL_SIZE;
312 if (self_referral) {
313 v3->server_type = DFS_SERVER_ROOT;
314 } else {
315 v3->server_type = DFS_SERVER_NON_ROOT;
316 }
317 v3->entry_flags = 0;
318 v3->ttl = ref->ttl;
319 r1->DFS_path = talloc_strdup(mem_ctx, pathnamep);
320 if (r1->DFS_path == NULL) {
321 return NT_STATUS_NO_MEMORY;
322 }
323 r1->DFS_alt_path = talloc_strdup(mem_ctx, pathnamep);
324 if (r1->DFS_alt_path == NULL) {
325 return NT_STATUS_NO_MEMORY;
326 }
327 r1->netw_address = talloc_strdup(mem_ctx,
328 ref->alternate_path);
329 if (r1->netw_address == NULL) {
330 return NT_STATUS_NO_MEMORY;
331 }
332 }
333 break;
334 default:
335 DEBUG(0,("setup_dfs_referral: Invalid dfs referral "
336 "version: %d\n",
337 max_referral_level));
338 return NT_STATUS_INVALID_LEVEL;
339 }
340
341 if (DEBUGLVL(10)) {
342 NDR_PRINT_OUT_DEBUG(dfs_GetDFSReferral, r);
343 }
344
345 return NT_STATUS_OK;
346 }
347
348 /* Directory operations */
349
350 static DIR *vfswrap_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
351 {
352 DIR *result;
353
354 START_PROFILE(syscall_opendir);
355 result = opendir(fname);
356 END_PROFILE(syscall_opendir);
357 return result;
358 }
359
360 static DIR *vfswrap_fdopendir(vfs_handle_struct *handle,
361 files_struct *fsp,
362 const char *mask,
363 uint32 attr)
364 {
365 DIR *result;
366
367 START_PROFILE(syscall_fdopendir);
368 result = sys_fdopendir(fsp->fh->fd);
369 END_PROFILE(syscall_fdopendir);
370 return result;
371 }
372
373
374 static struct dirent *vfswrap_readdir(vfs_handle_struct *handle,
375 DIR *dirp,
376 SMB_STRUCT_STAT *sbuf)
377 {
378 struct dirent *result;
379
380 START_PROFILE(syscall_readdir);
381 result = readdir(dirp);
382 /* Default Posix readdir() does not give us stat info.
383 * Set to invalid to indicate we didn't return this info. */
384 if (sbuf)
385 SET_STAT_INVALID(*sbuf);
386 END_PROFILE(syscall_readdir);
387 return result;
388 }
389
390 static void vfswrap_seekdir(vfs_handle_struct *handle, DIR *dirp, long offset)
391 {
392 START_PROFILE(syscall_seekdir);
393 seekdir(dirp, offset);
394 END_PROFILE(syscall_seekdir);
395 }
396
397 static long vfswrap_telldir(vfs_handle_struct *handle, DIR *dirp)
398 {
399 long result;
400 START_PROFILE(syscall_telldir);
401 result = telldir(dirp);
402 END_PROFILE(syscall_telldir);
403 return result;
404 }
405
406 static void vfswrap_rewinddir(vfs_handle_struct *handle, DIR *dirp)
407 {
408 START_PROFILE(syscall_rewinddir);
409 rewinddir(dirp);
410 END_PROFILE(syscall_rewinddir);
411 }
412
413 static int vfswrap_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode)
414 {
415 int result;
416 bool has_dacl = False;
417 char *parent = NULL;
418
419 START_PROFILE(syscall_mkdir);
420
421 if (lp_inherit_acls(SNUM(handle->conn))
422 && parent_dirname(talloc_tos(), path, &parent, NULL)
423 && (has_dacl = directory_has_default_acl(handle->conn, parent)))
424 mode = (0777 & lp_dir_mask(SNUM(handle->conn)));
425
426 TALLOC_FREE(parent);
427
428 result = mkdir(path, mode);
429
430 if (result == 0 && !has_dacl) {
431 /*
432 * We need to do this as the default behavior of POSIX ACLs
433 * is to set the mask to be the requested group permission
434 * bits, not the group permission bits to be the requested
435 * group permission bits. This is not what we want, as it will
436 * mess up any inherited ACL bits that were set. JRA.
437 */
438 int saved_errno = errno; /* We may get ENOSYS */
439 if ((SMB_VFS_CHMOD_ACL(handle->conn, path, mode) == -1) && (errno == ENOSYS))
440 errno = saved_errno;
441 }
442
443 END_PROFILE(syscall_mkdir);
444 return result;
445 }
446
447 static int vfswrap_rmdir(vfs_handle_struct *handle, const char *path)
448 {
449 int result;
450
451 START_PROFILE(syscall_rmdir);
452 result = rmdir(path);
453 END_PROFILE(syscall_rmdir);
454 return result;
455 }
456
457 static int vfswrap_closedir(vfs_handle_struct *handle, DIR *dirp)
458 {
459 int result;
460
461 START_PROFILE(syscall_closedir);
462 result = closedir(dirp);
463 END_PROFILE(syscall_closedir);
464 return result;
465 }
466
467 static void vfswrap_init_search_op(vfs_handle_struct *handle,
468 DIR *dirp)
469 {
470 /* Default behavior is a NOOP */
471 }
472
473 /* File operations */
474
475 static int vfswrap_open(vfs_handle_struct *handle,
476 struct smb_filename *smb_fname,
477 files_struct *fsp, int flags, mode_t mode)
478 {
479 int result = -1;
480
481 START_PROFILE(syscall_open);
482
483 if (smb_fname->stream_name) {
484 errno = ENOENT;
485 goto out;
486 }
487
488 result = open(smb_fname->base_name, flags, mode);
489 out:
490 END_PROFILE(syscall_open);
491 return result;
492 }
493
494 static NTSTATUS vfswrap_create_file(vfs_handle_struct *handle,
495 struct smb_request *req,
496 uint16_t root_dir_fid,
497 struct smb_filename *smb_fname,
498 uint32_t access_mask,
499 uint32_t share_access,
500 uint32_t create_disposition,
501 uint32_t create_options,
502 uint32_t file_attributes,
503 uint32_t oplock_request,
504 uint64_t allocation_size,
505 uint32_t private_flags,
506 struct security_descriptor *sd,
507 struct ea_list *ea_list,
508 files_struct **result,
509 int *pinfo)
510 {
511 return create_file_default(handle->conn, req, root_dir_fid, smb_fname,
512 access_mask, share_access,
513 create_disposition, create_options,
514 file_attributes, oplock_request,
515 allocation_size, private_flags,
516 sd, ea_list, result,
517 pinfo);
518 }
519
520 static int vfswrap_close(vfs_handle_struct *handle, files_struct *fsp)
521 {
522 int result;
523
524 START_PROFILE(syscall_close);
525 result = fd_close_posix(fsp);
526 END_PROFILE(syscall_close);
527 return result;
528 }
529
530 static ssize_t vfswrap_read(vfs_handle_struct *handle, files_struct *fsp, void *data, size_t n)
531 {
532 ssize_t result;
533
534 START_PROFILE_BYTES(syscall_read, n);
535 result = sys_read(fsp->fh->fd, data, n);
536 END_PROFILE(syscall_read);
537 return result;
538 }
539
540 static ssize_t vfswrap_pread(vfs_handle_struct *handle, files_struct *fsp, void *data,
541 size_t n, off_t offset)
542 {
543 ssize_t result;
544
545 #if defined(HAVE_PREAD) || defined(HAVE_PREAD64)
546 START_PROFILE_BYTES(syscall_pread, n);
547 result = sys_pread(fsp->fh->fd, data, n, offset);
548 END_PROFILE(syscall_pread);
549
550 if (result == -1 && errno == ESPIPE) {
551 /* Maintain the fiction that pipes can be seeked (sought?) on. */
552 result = SMB_VFS_READ(fsp, data, n);
553 fsp->fh->pos = 0;
554 }
555
556 #else /* HAVE_PREAD */
557 off_t curr;
558 int lerrno;
559
560 curr = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
561 if (curr == -1 && errno == ESPIPE) {
562 /* Maintain the fiction that pipes can be seeked (sought?) on. */
563 result = SMB_VFS_READ(fsp, data, n);
564 fsp->fh->pos = 0;
565 return result;
566 }
567
568 if (SMB_VFS_LSEEK(fsp, offset, SEEK_SET) == -1) {
569 return -1;
570 }
571
572 errno = 0;
573 result = SMB_VFS_READ(fsp, data, n);
574 lerrno = errno;
575
576 SMB_VFS_LSEEK(fsp, curr, SEEK_SET);
577 errno = lerrno;
578
579 #endif /* HAVE_PREAD */
580
581 return result;
582 }
583
584 static ssize_t vfswrap_write(vfs_handle_struct *handle, files_struct *fsp, const void *data, size_t n)
585 {
586 ssize_t result;
587
588 START_PROFILE_BYTES(syscall_write, n);
589 result = sys_write(fsp->fh->fd, data, n);
590 END_PROFILE(syscall_write);
591 return result;
592 }
593
594 static ssize_t vfswrap_pwrite(vfs_handle_struct *handle, files_struct *fsp, const void *data,
595 size_t n, off_t offset)
596 {
597 ssize_t result;
598
599 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
600 START_PROFILE_BYTES(syscall_pwrite, n);
601 result = sys_pwrite(fsp->fh->fd, data, n, offset);
602 END_PROFILE(syscall_pwrite);
603
604 if (result == -1 && errno == ESPIPE) {
605 /* Maintain the fiction that pipes can be sought on. */
606 result = SMB_VFS_WRITE(fsp, data, n);
607 }
608
609 #else /* HAVE_PWRITE */
610 off_t curr;
611 int lerrno;
612
613 curr = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
614 if (curr == -1) {
615 return -1;
616 }
617
618 if (SMB_VFS_LSEEK(fsp, offset, SEEK_SET) == -1) {
619 return -1;
620 }
621
622 result = SMB_VFS_WRITE(fsp, data, n);
623 lerrno = errno;
624
625 SMB_VFS_LSEEK(fsp, curr, SEEK_SET);
626 errno = lerrno;
627
628 #endif /* HAVE_PWRITE */
629
630 return result;
631 }
632
633 static void vfswrap_asys_finished(struct tevent_context *ev,
634 struct tevent_fd *fde,
635 uint16_t flags, void *p);
636
637 static bool vfswrap_init_asys_ctx(struct smbXsrv_connection *conn)
638 {
639 int ret;
640 int fd;
641
642 if (conn->asys_ctx != NULL) {
643 return true;
644 }
645 ret = asys_context_init(&conn->asys_ctx, aio_pending_size);
646 if (ret != 0) {
647 DEBUG(1, ("asys_context_init failed: %s\n", strerror(ret)));
648 return false;
649 }
650
651 fd = asys_signalfd(conn->asys_ctx);
652
653 set_blocking(fd, false);
654
655 conn->asys_fde = tevent_add_fd(conn->ev_ctx, conn, fd,
656 TEVENT_FD_READ,
657 vfswrap_asys_finished,
658 conn->asys_ctx);
659 if (conn->asys_fde == NULL) {
660 DEBUG(1, ("tevent_add_fd failed\n"));
661 asys_context_destroy(conn->asys_ctx);
662 conn->asys_ctx = NULL;
663 return false;
664 }
665 return true;
666 }
667
668 struct vfswrap_asys_state {
669 struct asys_context *asys_ctx;
670 struct tevent_req *req;
671 ssize_t ret;
672 int err;
673 };
674
675 static int vfswrap_asys_state_destructor(struct vfswrap_asys_state *s)
676 {
677 asys_cancel(s->asys_ctx, s->req);
678 return 0;
679 }
680
681 static struct tevent_req *vfswrap_pread_send(struct vfs_handle_struct *handle,
682 TALLOC_CTX *mem_ctx,
683 struct tevent_context *ev,
684 struct files_struct *fsp,
685 void *data,
686 size_t n, off_t offset)
687 {
688 struct tevent_req *req;
689 struct vfswrap_asys_state *state;
690 int ret;
691
692 req = tevent_req_create(mem_ctx, &state, struct vfswrap_asys_state);
693 if (req == NULL) {
694 return NULL;
695 }
696 if (!vfswrap_init_asys_ctx(handle->conn->sconn->conn)) {
697 tevent_req_oom(req);
698 return tevent_req_post(req, ev);
699 }
700 state->asys_ctx = handle->conn->sconn->conn->asys_ctx;
701 state->req = req;
702
703 ret = asys_pread(state->asys_ctx, fsp->fh->fd, data, n, offset, req);
704 if (ret != 0) {
705 tevent_req_error(req, ret);
706 return tevent_req_post(req, ev);
707 }
708 talloc_set_destructor(state, vfswrap_asys_state_destructor);
709
710 return req;
711 }
712
713 static struct tevent_req *vfswrap_pwrite_send(struct vfs_handle_struct *handle,
714 TALLOC_CTX *mem_ctx,
715 struct tevent_context *ev,
716 struct files_struct *fsp,
717 const void *data,
718 size_t n, off_t offset)
719 {
720 struct tevent_req *req;
721 struct vfswrap_asys_state *state;
722 int ret;
723
724 req = tevent_req_create(mem_ctx, &state, struct vfswrap_asys_state);
725 if (req == NULL) {
726 return NULL;
727 }
728 if (!vfswrap_init_asys_ctx(handle->conn->sconn->conn)) {
729 tevent_req_oom(req);
730 return tevent_req_post(req, ev);
731 }
732 state->asys_ctx = handle->conn->sconn->conn->asys_ctx;
733 state->req = req;
734
735 ret = asys_pwrite(state->asys_ctx, fsp->fh->fd, data, n, offset, req);
736 if (ret != 0) {
737 tevent_req_error(req, ret);
738 return tevent_req_post(req, ev);
739 }
740 talloc_set_destructor(state, vfswrap_asys_state_destructor);
741
742 return req;
743 }
744
745 static struct tevent_req *vfswrap_fsync_send(struct vfs_handle_struct *handle,
746 TALLOC_CTX *mem_ctx,
747 struct tevent_context *ev,
748 struct files_struct *fsp)
749 {
750 struct tevent_req *req;
751 struct vfswrap_asys_state *state;
752 int ret;
753
754 req = tevent_req_create(mem_ctx, &state, struct vfswrap_asys_state);
755 if (req == NULL) {
756 return NULL;
757 }
758 if (!vfswrap_init_asys_ctx(handle->conn->sconn->conn)) {
759 tevent_req_oom(req);
760 return tevent_req_post(req, ev);
761 }
762 state->asys_ctx = handle->conn->sconn->conn->asys_ctx;
763 state->req = req;
764
765 ret = asys_fsync(state->asys_ctx, fsp->fh->fd, req);
766 if (ret != 0) {
767 tevent_req_error(req, ret);
768 return tevent_req_post(req, ev);
769 }
770 talloc_set_destructor(state, vfswrap_asys_state_destructor);
771
772 return req;
773 }
774
775 static void vfswrap_asys_finished(struct tevent_context *ev,
776 struct tevent_fd *fde,
777 uint16_t flags, void *p)
778 {
779 struct asys_context *asys_ctx = (struct asys_context *)p;
780 struct tevent_req *req;
781 struct vfswrap_asys_state *state;
782 int res;
783 ssize_t ret;
784 int err;
785 void *private_data;
786
787 if ((flags & TEVENT_FD_READ) == 0) {
788 return;
789 }
790
791 while (true) {
792 res = asys_result(asys_ctx, &ret, &err, &private_data);
793 if (res == EINTR || res == EAGAIN) {
794 return;
795 }
796 #ifdef EWOULDBLOCK
797 if (res == EWOULDBLOCK) {
798 return;
799 }
800 #endif
801
802 if (res == ECANCELED) {
803 return;
804 }
805
806 if (res != 0) {
807 DEBUG(1, ("asys_result returned %s\n", strerror(res)));
808 return;
809 }
810
811 req = talloc_get_type_abort(private_data, struct tevent_req);
812 state = tevent_req_data(req, struct vfswrap_asys_state);
813
814 talloc_set_destructor(state, NULL);
815
816 state->ret = ret;
817 state->err = err;
818 tevent_req_defer_callback(req, ev);
819 tevent_req_done(req);
820 }
821 }
822
823 static ssize_t vfswrap_asys_ssize_t_recv(struct tevent_req *req, int *err)
824 {
825 struct vfswrap_asys_state *state = tevent_req_data(
826 req, struct vfswrap_asys_state);
827
828 if (tevent_req_is_unix_error(req, err)) {
829 return -1;
830 }
831 *err = state->err;
832 return state->ret;
833 }
834
835 static int vfswrap_asys_int_recv(struct tevent_req *req, int *err)
836 {
837 struct vfswrap_asys_state *state = tevent_req_data(
838 req, struct vfswrap_asys_state);
839
840 if (tevent_req_is_unix_error(req, err)) {
841 return -1;
842 }
843 *err = state->err;
844 return state->ret;
845 }
846
847 static off_t vfswrap_lseek(vfs_handle_struct *handle, files_struct *fsp, off_t offset, int whence)
848 {
849 off_t result = 0;
850
851 START_PROFILE(syscall_lseek);
852
853 /* Cope with 'stat' file opens. */
854 if (fsp->fh->fd != -1)
855 result = lseek(fsp->fh->fd, offset, whence);
856
857 /*
858 * We want to maintain the fiction that we can seek
859 * on a fifo for file system purposes. This allows
860 * people to set up UNIX fifo's that feed data to Windows
861 * applications. JRA.
862 */
863
864 if((result == -1) && (errno == ESPIPE)) {
865 result = 0;
866 errno = 0;
867 }
868
869 END_PROFILE(syscall_lseek);
870 return result;
871 }
872
873 static ssize_t vfswrap_sendfile(vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *hdr,
874 off_t offset, size_t n)
875 {
876 ssize_t result;
877
878 START_PROFILE_BYTES(syscall_sendfile, n);
879 result = sys_sendfile(tofd, fromfsp->fh->fd, hdr, offset, n);
880 END_PROFILE(syscall_sendfile);
881 return result;
882 }
883
884 static ssize_t vfswrap_recvfile(vfs_handle_struct *handle,
885 int fromfd,
886 files_struct *tofsp,
887 off_t offset,
888 size_t n)
889 {
890 ssize_t result;
891
892 START_PROFILE_BYTES(syscall_recvfile, n);
893 result = sys_recvfile(fromfd, tofsp->fh->fd, offset, n);
894 END_PROFILE(syscall_recvfile);
895 return result;
896 }
897
898 static int vfswrap_rename(vfs_handle_struct *handle,
899 const struct smb_filename *smb_fname_src,
900 const struct smb_filename *smb_fname_dst)
901 {
902 int result = -1;
903
904 START_PROFILE(syscall_rename);
905
906 if (smb_fname_src->stream_name || smb_fname_dst->stream_name) {
907 errno = ENOENT;
908 goto out;
909 }
910
911 result = rename(smb_fname_src->base_name, smb_fname_dst->base_name);
912
913 out:
914 END_PROFILE(syscall_rename);
915 return result;
916 }
917
918 static int vfswrap_fsync(vfs_handle_struct *handle, files_struct *fsp)
919 {
920 #ifdef HAVE_FSYNC
921 int result;
922
923 START_PROFILE(syscall_fsync);
924 result = fsync(fsp->fh->fd);
925 END_PROFILE(syscall_fsync);
926 return result;
927 #else
928 return 0;
929 #endif
930 }
931
932 static int vfswrap_stat(vfs_handle_struct *handle,
933 struct smb_filename *smb_fname)
934 {
935 int result = -1;
936
937 START_PROFILE(syscall_stat);
938
939 if (smb_fname->stream_name) {
940 errno = ENOENT;
941 goto out;
942 }
943
944 result = sys_stat(smb_fname->base_name, &smb_fname->st,
945 lp_fake_dir_create_times(SNUM(handle->conn)));
946 out:
947 END_PROFILE(syscall_stat);
948 return result;
949 }
950
951 static int vfswrap_fstat(vfs_handle_struct *handle, files_struct *fsp, SMB_STRUCT_STAT *sbuf)
952 {
953 int result;
954
955 START_PROFILE(syscall_fstat);
956 result = sys_fstat(fsp->fh->fd,
957 sbuf, lp_fake_dir_create_times(SNUM(handle->conn)));
958 END_PROFILE(syscall_fstat);
959 return result;
960 }
961
962 static int vfswrap_lstat(vfs_handle_struct *handle,
963 struct smb_filename *smb_fname)
964 {
965 int result = -1;
966
967 START_PROFILE(syscall_lstat);
968
969 if (smb_fname->stream_name) {
970 errno = ENOENT;
971 goto out;
972 }
973
974 result = sys_lstat(smb_fname->base_name, &smb_fname->st,
975 lp_fake_dir_create_times(SNUM(handle->conn)));
976 out:
977 END_PROFILE(syscall_lstat);
978 return result;
979 }
980
981 static NTSTATUS vfswrap_translate_name(struct vfs_handle_struct *handle,
982 const char *name,
983 enum vfs_translate_direction direction,
984 TALLOC_CTX *mem_ctx,
985 char **mapped_name)
986 {
987 return NT_STATUS_NONE_MAPPED;
988 }
989
990 /*
991 * Implement the default fsctl operation.
992 */
993 static bool vfswrap_logged_ioctl_message = false;
994
995 static NTSTATUS vfswrap_fsctl(struct vfs_handle_struct *handle,
996 struct files_struct *fsp,
997 TALLOC_CTX *ctx,
998 uint32_t function,
999 uint16_t req_flags, /* Needed for UNICODE ... */
1000 const uint8_t *_in_data,
1001 uint32_t in_len,
1002 uint8_t **_out_data,
1003 uint32_t max_out_len,
1004 uint32_t *out_len)
1005 {
1006 const char *in_data = (const char *)_in_data;
1007 char **out_data = (char **)_out_data;
1008
1009 switch (function) {
1010 case FSCTL_SET_SPARSE:
1011 {
1012 bool set_sparse = true;
1013 NTSTATUS status;
1014
1015 if (in_len >= 1 && in_data[0] == 0) {
1016 set_sparse = false;
1017 }
1018
1019 status = file_set_sparse(handle->conn, fsp, set_sparse);
1020
1021 DEBUG(NT_STATUS_IS_OK(status) ? 10 : 9,
1022 ("FSCTL_SET_SPARSE: fname[%s] set[%u] - %s\n",
1023 smb_fname_str_dbg(fsp->fsp_name), set_sparse,
1024 nt_errstr(status)));
1025
1026 return status;
1027 }
1028
1029 case FSCTL_CREATE_OR_GET_OBJECT_ID:
1030 {
1031 unsigned char objid[16];
1032 char *return_data = NULL;
1033
1034 /* This should return the object-id on this file.
1035 * I think I'll make this be the inode+dev. JRA.
1036 */
1037
1038 DEBUG(10,("FSCTL_CREATE_OR_GET_OBJECT_ID: called on %s\n",
1039 fsp_fnum_dbg(fsp)));
1040
1041 *out_len = (max_out_len >= 64) ? 64 : max_out_len;
1042 /* Hmmm, will this cause problems if less data asked for? */
1043 return_data = talloc_array(ctx, char, 64);
1044 if (return_data == NULL) {
1045 return NT_STATUS_NO_MEMORY;
1046 }
1047
1048 /* For backwards compatibility only store the dev/inode. */
1049 push_file_id_16(return_data, &fsp->file_id);
1050 memcpy(return_data+16,create_volume_objectid(fsp->conn,objid),16);
1051 push_file_id_16(return_data+32, &fsp->file_id);
1052 *out_data = return_data;
1053 return NT_STATUS_OK;
1054 }
1055
1056 case FSCTL_GET_REPARSE_POINT:
1057 {
1058 /* Fail it with STATUS_NOT_A_REPARSE_POINT */
1059 DEBUG(10, ("FSCTL_GET_REPARSE_POINT: called on %s. "
1060 "Status: NOT_IMPLEMENTED\n", fsp_fnum_dbg(fsp)));
1061 return NT_STATUS_NOT_A_REPARSE_POINT;
1062 }
1063
1064 case FSCTL_SET_REPARSE_POINT:
1065 {
1066 /* Fail it with STATUS_NOT_A_REPARSE_POINT */
1067 DEBUG(10, ("FSCTL_SET_REPARSE_POINT: called on %s. "
1068 "Status: NOT_IMPLEMENTED\n", fsp_fnum_dbg(fsp)));
1069 return NT_STATUS_NOT_A_REPARSE_POINT;
1070 }
1071
1072 case FSCTL_GET_SHADOW_COPY_DATA:
1073 {
1074 /*
1075 * This is called to retrieve the number of Shadow Copies (a.k.a. snapshots)
1076 * and return their volume names. If max_data_count is 16, then it is just
1077 * asking for the number of volumes and length of the combined names.
1078 *
1079 * pdata is the data allocated by our caller, but that uses
1080 * total_data_count (which is 0 in our case) rather than max_data_count.
1081 * Allocate the correct amount and return the pointer to let
1082 * it be deallocated when we return.
1083 */
1084 struct shadow_copy_data *shadow_data = NULL;
1085 bool labels = False;
1086 uint32 labels_data_count = 0;
1087 uint32 i;
1088 char *cur_pdata = NULL;
1089
1090 if (max_out_len < 16) {
1091 DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) < 16 is invalid!\n",
1092 max_out_len));
1093 return NT_STATUS_INVALID_PARAMETER;
1094 }
1095
1096 if (max_out_len > 16) {
1097 labels = True;
1098 }
1099
1100 shadow_data = talloc_zero(ctx, struct shadow_copy_data);
1101 if (shadow_data == NULL) {
1102 DEBUG(0,("TALLOC_ZERO() failed!\n"));
1103 return NT_STATUS_NO_MEMORY;
1104 }
1105
1106 /*
1107 * Call the VFS routine to actually do the work.
1108 */
1109 if (SMB_VFS_GET_SHADOW_COPY_DATA(fsp, shadow_data, labels)!=0) {
1110 TALLOC_FREE(shadow_data);
1111 if (errno == ENOSYS) {
1112 DEBUG(5,("FSCTL_GET_SHADOW_COPY_DATA: connectpath %s, not supported.\n",
1113 fsp->conn->connectpath));
1114 return NT_STATUS_NOT_SUPPORTED;
1115 } else {
1116 DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: connectpath %s, failed.\n",
1117 fsp->conn->connectpath));
1118 return NT_STATUS_UNSUCCESSFUL;
1119 }
1120 }
1121
1122 labels_data_count = (shadow_data->num_volumes * 2 *
1123 sizeof(SHADOW_COPY_LABEL)) + 2;
1124
1125 if (!labels) {
1126 *out_len = 16;
1127 } else {
1128 *out_len = 12 + labels_data_count;
1129 }
1130
1131 if (max_out_len < *out_len) {
1132 DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) too small (%u) bytes needed!\n",
1133 max_out_len, *out_len));
1134 TALLOC_FREE(shadow_data);
1135 return NT_STATUS_BUFFER_TOO_SMALL;
1136 }
1137
1138 cur_pdata = talloc_zero_array(ctx, char, *out_len);
1139 if (cur_pdata == NULL) {
1140 TALLOC_FREE(shadow_data);
1141 return NT_STATUS_NO_MEMORY;
1142 }
1143
1144 *out_data = cur_pdata;
1145
1146 /* num_volumes 4 bytes */
1147 SIVAL(cur_pdata, 0, shadow_data->num_volumes);
1148
1149 if (labels) {
1150 /* num_labels 4 bytes */
1151 SIVAL(cur_pdata, 4, shadow_data->num_volumes);
1152 }
1153
1154 /* needed_data_count 4 bytes */
1155 SIVAL(cur_pdata, 8, labels_data_count);
1156
1157 cur_pdata += 12;
1158
1159 DEBUG(10,("FSCTL_GET_SHADOW_COPY_DATA: %u volumes for path[%s].\n",
1160 shadow_data->num_volumes, fsp_str_dbg(fsp)));
1161 if (labels && shadow_data->labels) {
1162 for (i=0; i<shadow_data->num_volumes; i++) {
1163 srvstr_push(cur_pdata, req_flags,
1164 cur_pdata, shadow_data->labels[i],
1165 2 * sizeof(SHADOW_COPY_LABEL),
1166 STR_UNICODE|STR_TERMINATE);
1167 cur_pdata += 2 * sizeof(SHADOW_COPY_LABEL);
1168 DEBUGADD(10,("Label[%u]: '%s'\n",i,shadow_data->labels[i]));
1169 }
1170 }
1171
1172 TALLOC_FREE(shadow_data);
1173
1174 return NT_STATUS_OK;
1175 }
1176
1177 case FSCTL_FIND_FILES_BY_SID:
1178 {
1179 /* pretend this succeeded -
1180 *
1181 * we have to send back a list with all files owned by this SID
1182 *
1183 * but I have to check that --metze
1184 */
1185 struct dom_sid sid;
1186 uid_t uid;
1187 size_t sid_len;
1188
1189 DEBUG(10, ("FSCTL_FIND_FILES_BY_SID: called on %s\n",
1190 fsp_fnum_dbg(fsp)));
1191
1192 if (in_len < 8) {
1193 /* NT_STATUS_BUFFER_TOO_SMALL maybe? */
1194 return NT_STATUS_INVALID_PARAMETER;
1195 }
1196
1197 sid_len = MIN(in_len - 4,SID_MAX_SIZE);
1198
1199 /* unknown 4 bytes: this is not the length of the sid :-( */
1200 /*unknown = IVAL(pdata,0);*/
1201
1202 if (!sid_parse(in_data + 4, sid_len, &sid)) {
1203 return NT_STATUS_INVALID_PARAMETER;
1204 }
1205 DEBUGADD(10, ("for SID: %s\n", sid_string_dbg(&sid)));
1206
1207 if (!sid_to_uid(&sid, &uid)) {
1208 DEBUG(0,("sid_to_uid: failed, sid[%s] sid_len[%lu]\n",
1209 sid_string_dbg(&sid),
1210 (unsigned long)sid_len));
1211 uid = (-1);
1212 }
1213
1214 /* we can take a look at the find source :-)
1215 *
1216 * find ./ -uid $uid -name '*' is what we need here
1217 *
1218 *
1219 * and send 4bytes len and then NULL terminated unicode strings
1220 * for each file
1221 *
1222 * but I don't know how to deal with the paged results
1223 * (maybe we can hang the result anywhere in the fsp struct)
1224 *
1225 * but I don't know how to deal with the paged results
1226 * (maybe we can hang the result anywhere in the fsp struct)
1227 *
1228 * we don't send all files at once
1229 * and at the next we should *not* start from the beginning,
1230 * so we have to cache the result
1231 *
1232 * --metze
1233 */
1234
1235 /* this works for now... */
1236 return NT_STATUS_OK;
1237 }
1238
1239 case FSCTL_QUERY_ALLOCATED_RANGES:
1240 {
1241 /* FIXME: This is just a dummy reply, telling that all of the
1242 * file is allocated. MKS cp needs that.
1243 * Adding the real allocated ranges via FIEMAP on Linux
1244 * and SEEK_DATA/SEEK_HOLE on Solaris is needed to make
1245 * this FSCTL correct for sparse files.
1246 */
1247 NTSTATUS status;
1248 uint64_t offset, length;
1249 char *out_data_tmp = NULL;
1250
1251 if (in_len != 16) {
1252 DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: data_count(%u) != 16 is invalid!\n",
1253 in_len));
1254 return NT_STATUS_INVALID_PARAMETER;
1255 }
1256
1257 if (max_out_len < 16) {
1258 DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: max_out_len (%u) < 16 is invalid!\n",
1259 max_out_len));
1260 return NT_STATUS_INVALID_PARAMETER;
1261 }
1262
1263 offset = BVAL(in_data,0);
1264 length = BVAL(in_data,8);
1265
1266 if (offset + length < offset) {
1267 /* No 64-bit integer wrap. */
1268 return NT_STATUS_INVALID_PARAMETER;
1269 }
1270
1271 /* Shouldn't this be SMB_VFS_STAT ... ? */
1272 status = vfs_stat_fsp(fsp);
1273 if (!NT_STATUS_IS_OK(status)) {
1274 return status;
1275 }
1276
1277 *out_len = 16;
1278 out_data_tmp = talloc_array(ctx, char, *out_len);
1279 if (out_data_tmp == NULL) {
1280 DEBUG(10, ("unable to allocate memory for response\n"));
1281 return NT_STATUS_NO_MEMORY;
1282 }
1283
1284 if (offset > fsp->fsp_name->st.st_ex_size ||
1285 fsp->fsp_name->st.st_ex_size == 0 ||
1286 length == 0) {
1287 memset(out_data_tmp, 0, *out_len);
1288 } else {
1289 uint64_t end = offset + length;
1290 end = MIN(end, fsp->fsp_name->st.st_ex_size);
1291 SBVAL(out_data_tmp, 0, 0);
1292 SBVAL(out_data_tmp, 8, end);
1293 }
1294
1295 *out_data = out_data_tmp;
1296
1297 return NT_STATUS_OK;
1298 }
1299
1300 case FSCTL_IS_VOLUME_DIRTY:
1301 {
1302 DEBUG(10,("FSCTL_IS_VOLUME_DIRTY: called on %s "
1303 "(but remotely not supported)\n", fsp_fnum_dbg(fsp)));
1304 /*
1305 * http://msdn.microsoft.com/en-us/library/cc232128%28PROT.10%29.aspx
1306 * says we have to respond with NT_STATUS_INVALID_PARAMETER
1307 */
1308 return NT_STATUS_INVALID_PARAMETER;
1309 }
1310
1311 default:
1312 /*
1313 * Only print once ... unfortunately there could be lots of
1314 * different FSCTLs that are called.
1315 */
1316 if (!vfswrap_logged_ioctl_message) {
1317 vfswrap_logged_ioctl_message = true;
1318 DEBUG(2, ("%s (0x%x): Currently not implemented.\n",
1319 __func__, function));
1320 }
1321 }
1322
1323 return NT_STATUS_NOT_SUPPORTED;
1324 }
1325
1326 /********************************************************************
1327 Given a stat buffer return the allocated size on disk, taking into
1328 account sparse files.
1329 ********************************************************************/
1330 static uint64_t vfswrap_get_alloc_size(vfs_handle_struct *handle,
1331 struct files_struct *fsp,
1332 const SMB_STRUCT_STAT *sbuf)
1333 {
1334 uint64_t result;
1335
1336 START_PROFILE(syscall_get_alloc_size);
1337
1338 if(S_ISDIR(sbuf->st_ex_mode)) {
1339 result = 0;
1340 goto out;
1341 }
1342
1343 #if defined(HAVE_STAT_ST_BLOCKS) && defined(STAT_ST_BLOCKSIZE)
1344 /* The type of st_blocksize is blkcnt_t which *MUST* be
1345 signed (according to POSIX) and can be less than 64-bits.
1346 Ensure when we're converting to 64 bits wide we don't
1347 sign extend. */
1348 #if defined(SIZEOF_BLKCNT_T_8)
1349 result = (uint64_t)STAT_ST_BLOCKSIZE * (uint64_t)sbuf->st_ex_blocks;
1350 #elif defined(SIZEOF_BLKCNT_T_4)
1351 {
1352 uint64_t bs = ((uint64_t)sbuf->st_ex_blocks) & 0xFFFFFFFFLL;
1353 result = (uint64_t)STAT_ST_BLOCKSIZE * bs;
1354 }
1355 #else
1356 #error SIZEOF_BLKCNT_T_NOT_A_SUPPORTED_VALUE
1357 #endif
1358 if (result == 0) {
1359 /*
1360 * Some file systems do not allocate a block for very
1361 * small files. But for non-empty file should report a
1362 * positive size.
1363 */
1364
1365 uint64_t filesize = get_file_size_stat(sbuf);
1366 if (filesize > 0) {
1367 result = MIN((uint64_t)STAT_ST_BLOCKSIZE, filesize);
1368 }
1369 }
1370 #else
1371 result = get_file_size_stat(sbuf);
1372 #endif
1373
1374 if (fsp && fsp->initial_allocation_size)
1375 result = MAX(result,fsp->initial_allocation_size);
1376
1377 result = smb_roundup(handle->conn, result);
1378
1379 out:
1380 END_PROFILE(syscall_get_alloc_size);
1381 return result;
1382 }
1383
1384 static int vfswrap_unlink(vfs_handle_struct *handle,
1385 const struct smb_filename *smb_fname)
1386 {
1387 int result = -1;
1388
1389 START_PROFILE(syscall_unlink);
1390
1391 if (smb_fname->stream_name) {
1392 errno = ENOENT;
1393 goto out;
1394 }
1395 result = unlink(smb_fname->base_name);
1396
1397 out:
1398 END_PROFILE(syscall_unlink);
1399 return result;
1400 }
1401
1402 static int vfswrap_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
1403 {
1404 int result;
1405
1406 START_PROFILE(syscall_chmod);
1407
1408 /*
1409 * We need to do this due to the fact that the default POSIX ACL
1410 * chmod modifies the ACL *mask* for the group owner, not the
1411 * group owner bits directly. JRA.
1412 */
1413
1414
1415 {
1416 int saved_errno = errno; /* We might get ENOSYS */
1417 if ((result = SMB_VFS_CHMOD_ACL(handle->conn, path, mode)) == 0) {
1418 END_PROFILE(syscall_chmod);
1419 return result;
1420 }
1421 /* Error - return the old errno. */
1422 errno = saved_errno;
1423 }
1424
1425 result = chmod(path, mode);
1426 END_PROFILE(syscall_chmod);
1427 return result;
1428 }
1429
1430 static int vfswrap_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
1431 {
1432 int result;
1433
1434 START_PROFILE(syscall_fchmod);
1435
1436 /*
1437 * We need to do this due to the fact that the default POSIX ACL
1438 * chmod modifies the ACL *mask* for the group owner, not the
1439 * group owner bits directly. JRA.
1440 */
1441
1442 {
1443 int saved_errno = errno; /* We might get ENOSYS */
1444 if ((result = SMB_VFS_FCHMOD_ACL(fsp, mode)) == 0) {
1445 END_PROFILE(syscall_fchmod);
1446 return result;
1447 }
1448 /* Error - return the old errno. */
1449 errno = saved_errno;
1450 }
1451
1452 #if defined(HAVE_FCHMOD)
1453 result = fchmod(fsp->fh->fd, mode);
1454 #else
1455 result = -1;
1456 errno = ENOSYS;
1457 #endif
1458
1459 END_PROFILE(syscall_fchmod);
1460 return result;
1461 }
1462
1463 static int vfswrap_chown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
1464 {
1465 int result;
1466
1467 START_PROFILE(syscall_chown);
1468 result = chown(path, uid, gid);
1469 END_PROFILE(syscall_chown);
1470 return result;
1471 }
1472
1473 static int vfswrap_fchown(vfs_handle_struct *handle, files_struct *fsp, uid_t uid, gid_t gid)
1474 {
1475 #ifdef HAVE_FCHOWN
1476 int result;
1477
1478 START_PROFILE(syscall_fchown);
1479 result = fchown(fsp->fh->fd, uid, gid);
1480 END_PROFILE(syscall_fchown);
1481 return result;
1482 #else
1483 errno = ENOSYS;
1484 return -1;
1485 #endif
1486 }
1487
1488 static int vfswrap_lchown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
1489 {
1490 int result;
1491
1492 START_PROFILE(syscall_lchown);
1493 result = lchown(path, uid, gid);
1494 END_PROFILE(syscall_lchown);
1495 return result;
1496 }
1497
1498 static int vfswrap_chdir(vfs_handle_struct *handle, const char *path)
1499 {
1500 int result;
1501
1502 START_PROFILE(syscall_chdir);
1503 result = chdir(path);
1504 END_PROFILE(syscall_chdir);
1505 return result;
1506 }
1507
1508 static char *vfswrap_getwd(vfs_handle_struct *handle)
1509 {
1510 char *result;
1511
1512 START_PROFILE(syscall_getwd);
1513 result = sys_getwd();
1514 END_PROFILE(syscall_getwd);
1515 return result;
1516 }
1517
1518 /*********************************************************************
1519 nsec timestamp resolution call. Convert down to whatever the underlying
1520 system will support.
1521 **********************************************************************/
1522
1523 static int vfswrap_ntimes(vfs_handle_struct *handle,
1524 const struct smb_filename *smb_fname,
1525 struct smb_file_time *ft)
1526 {
1527 int result = -1;
1528
1529 START_PROFILE(syscall_ntimes);
1530
1531 if (smb_fname->stream_name) {
1532 errno = ENOENT;
1533 goto out;
1534 }
1535
1536 if (ft != NULL) {
1537 if (null_timespec(ft->atime)) {
1538 ft->atime= smb_fname->st.st_ex_atime;
1539 }
1540
1541 if (null_timespec(ft->mtime)) {
1542 ft->mtime = smb_fname->st.st_ex_mtime;
1543 }
1544
1545 if (!null_timespec(ft->create_time)) {
1546 set_create_timespec_ea(handle->conn,
1547 smb_fname,
1548 ft->create_time);
1549 }
1550
1551 if ((timespec_compare(&ft->atime,
1552 &smb_fname->st.st_ex_atime) == 0) &&
1553 (timespec_compare(&ft->mtime,
1554 &smb_fname->st.st_ex_mtime) == 0)) {
1555 return 0;
1556 }
1557 }
1558
1559 #if defined(HAVE_UTIMENSAT)
1560 if (ft != NULL) {
1561 struct timespec ts[2];
1562 ts[0] = ft->atime;
1563 ts[1] = ft->mtime;
1564 result = utimensat(AT_FDCWD, smb_fname->base_name, ts, 0);
1565 } else {
1566 result = utimensat(AT_FDCWD, smb_fname->base_name, NULL, 0);
1567 }
1568 if (!((result == -1) && (errno == ENOSYS))) {
1569 goto out;
1570 }
1571 #endif
1572 #if defined(HAVE_UTIMES)
1573 if (ft != NULL) {
1574 struct timeval tv[2];
1575 tv[0] = convert_timespec_to_timeval(ft->atime);
1576 tv[1] = convert_timespec_to_timeval(ft->mtime);
1577 result = utimes(smb_fname->base_name, tv);
1578 } else {
1579 result = utimes(smb_fname->base_name, NULL);
1580 }
1581 if (!((result == -1) && (errno == ENOSYS))) {
1582 goto out;
1583 }
1584 #endif
1585 #if defined(HAVE_UTIME)
1586 if (ft != NULL) {
1587 struct utimbuf times;
1588 times.actime = convert_timespec_to_time_t(ft->atime);
1589 times.modtime = convert_timespec_to_time_t(ft->mtime);
1590 result = utime(smb_fname->base_name, &times);
1591 } else {
1592 result = utime(smb_fname->base_name, NULL);
1593 }
1594 if (!((result == -1) && (errno == ENOSYS))) {
1595 goto out;
1596 }
1597 #endif
1598 errno = ENOSYS;
1599 result = -1;
1600
1601 out:
1602 END_PROFILE(syscall_ntimes);
1603 return result;
1604 }
1605
1606 /*********************************************************************
1607 A version of ftruncate that will write the space on disk if strict
1608 allocate is set.
1609 **********************************************************************/
1610
1611 static int strict_allocate_ftruncate(vfs_handle_struct *handle, files_struct *fsp, off_t len)
1612 {
1613 off_t space_to_write;
1614 uint64_t space_avail;
1615 uint64_t bsize,dfree,dsize;
1616 int ret;
1617 NTSTATUS status;
1618 SMB_STRUCT_STAT *pst;
1619
1620 status = vfs_stat_fsp(fsp);
1621 if (!NT_STATUS_IS_OK(status)) {
1622 return -1;
1623 }
1624 pst = &fsp->fsp_name->st;
1625
1626 #ifdef S_ISFIFO
1627 if (S_ISFIFO(pst->st_ex_mode))
1628 return 0;
1629 #endif
1630
1631 if (pst->st_ex_size == len)
1632 return 0;
1633
1634 /* Shrink - just ftruncate. */
1635 if (pst->st_ex_size > len)
1636 return ftruncate(fsp->fh->fd, len);
1637
1638 space_to_write = len - pst->st_ex_size;
1639
1640 /* for allocation try fallocate first. This can fail on some
1641 platforms e.g. when the filesystem doesn't support it and no
1642 emulation is being done by the libc (like on AIX with JFS1). In that
1643 case we do our own emulation. fallocate implementations can
1644 return ENOTSUP or EINVAL in cases like that. */
1645 ret = SMB_VFS_FALLOCATE(fsp, VFS_FALLOCATE_EXTEND_SIZE,
1646 pst->st_ex_size, space_to_write);
1647 if (ret == ENOSPC) {
1648 errno = ENOSPC;
1649 return -1;
1650 }
1651 if (ret == 0) {
1652 return 0;
1653 }
1654 DEBUG(10,("strict_allocate_ftruncate: SMB_VFS_FALLOCATE failed with "
1655 "error %d. Falling back to slow manual allocation\n", ret));
1656
1657 /* available disk space is enough or not? */
1658 space_avail = get_dfree_info(fsp->conn,
1659 fsp->fsp_name->base_name, false,
1660 &bsize,&dfree,&dsize);
1661 /* space_avail is 1k blocks */
1662 if (space_avail == (uint64_t)-1 ||
1663 ((uint64_t)space_to_write/1024 > space_avail) ) {
1664 errno = ENOSPC;
1665 return -1;
1666 }
1667
1668 /* Write out the real space on disk. */
1669 ret = vfs_slow_fallocate(fsp, pst->st_ex_size, space_to_write);
1670 if (ret != 0) {
1671 errno = ret;
1672 ret = -1;
1673 }
1674
1675 return 0;
1676 }
1677
1678 static int vfswrap_ftruncate(vfs_handle_struct *handle, files_struct *fsp, off_t len)
1679 {
1680 int result = -1;
1681 SMB_STRUCT_STAT *pst;
1682 NTSTATUS status;
1683 char c = 0;
1684
1685 START_PROFILE(syscall_ftruncate);
1686
1687 if (lp_strict_allocate(SNUM(fsp->conn)) && !fsp->is_sparse) {
1688 result = strict_allocate_ftruncate(handle, fsp, len);
1689 END_PROFILE(syscall_ftruncate);
1690 return result;
1691 }
1692
1693 /* we used to just check HAVE_FTRUNCATE_EXTEND and only use
1694 ftruncate if the system supports it. Then I discovered that
1695 you can have some filesystems that support ftruncate
1696 expansion and some that don't! On Linux fat can't do
1697 ftruncate extend but ext2 can. */
1698
1699 result = ftruncate(fsp->fh->fd, len);
1700 if (result == 0)
1701 goto done;
1702
1703 /* According to W. R. Stevens advanced UNIX prog. Pure 4.3 BSD cannot
1704 extend a file with ftruncate. Provide alternate implementation
1705 for this */
1706
1707 /* Do an fstat to see if the file is longer than the requested
1708 size in which case the ftruncate above should have
1709 succeeded or shorter, in which case seek to len - 1 and
1710 write 1 byte of zero */
1711 status = vfs_stat_fsp(fsp);
1712 if (!NT_STATUS_IS_OK(status)) {
1713 goto done;
1714 }
1715 pst = &fsp->fsp_name->st;
1716
1717 #ifdef S_ISFIFO
1718 if (S_ISFIFO(pst->st_ex_mode)) {
1719 result = 0;
1720 goto done;
1721 }
1722 #endif
1723
1724 if (pst->st_ex_size == len) {
1725 result = 0;
1726 goto done;
1727 }
1728
1729 if (pst->st_ex_size > len) {
1730 /* the ftruncate should have worked */
1731 goto done;
1732 }
1733
1734 if (SMB_VFS_PWRITE(fsp, &c, 1, len-1)!=1) {
1735 goto done;
1736 }
1737
1738 result = 0;
1739
1740 done:
1741
1742 END_PROFILE(syscall_ftruncate);
1743 return result;
1744 }
1745
1746 static int vfswrap_fallocate(vfs_handle_struct *handle,
1747 files_struct *fsp,
1748 enum vfs_fallocate_mode mode,
1749 off_t offset,
1750 off_t len)
1751 {
1752 int result;
1753
1754 START_PROFILE(syscall_fallocate);
1755 if (mode == VFS_FALLOCATE_EXTEND_SIZE) {
1756 result = sys_posix_fallocate(fsp->fh->fd, offset, len);
1757 } else if (mode == VFS_FALLOCATE_KEEP_SIZE) {
1758 result = sys_fallocate(fsp->fh->fd, mode, offset, len);
1759 } else {
1760 errno = EINVAL;
1761 result = -1;
1762 }
1763 END_PROFILE(syscall_fallocate);
1764 return result;
1765 }
1766
1767 static bool vfswrap_lock(vfs_handle_struct *handle, files_struct *fsp, int op, off_t offset, off_t count, int type)
1768 {
1769 bool result;
1770
1771 START_PROFILE(syscall_fcntl_lock);
1772 result = fcntl_lock(fsp->fh->fd, op, offset, count, type);
1773 END_PROFILE(syscall_fcntl_lock);
1774 return result;
1775 }
1776
1777 static int vfswrap_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
1778 uint32 share_mode, uint32 access_mask)
1779 {
1780 START_PROFILE(syscall_kernel_flock);
1781 kernel_flock(fsp->fh->fd, share_mode, access_mask);
1782 END_PROFILE(syscall_kernel_flock);
1783 return 0;
1784 }
1785
1786 static bool vfswrap_getlock(vfs_handle_struct *handle, files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid)
1787 {
1788 bool result;
1789
1790 START_PROFILE(syscall_fcntl_getlock);
1791 result = fcntl_getlock(fsp->fh->fd, poffset, pcount, ptype, ppid);
1792 END_PROFILE(syscall_fcntl_getlock);
1793 return result;
1794 }
1795
1796 static int vfswrap_linux_setlease(vfs_handle_struct *handle, files_struct *fsp,
1797 int leasetype)
1798 {
1799 int result = -1;
1800
1801 START_PROFILE(syscall_linux_setlease);
1802
1803 #ifdef HAVE_KERNEL_OPLOCKS_LINUX
1804 result = linux_setlease(fsp->fh->fd, leasetype);
1805 #else
1806 errno = ENOSYS;
1807 #endif
1808 END_PROFILE(syscall_linux_setlease);
1809 return result;
1810 }
1811
1812 static int vfswrap_symlink(vfs_handle_struct *handle, const char *oldpath, const char *newpath)
1813 {
1814 int result;
1815
1816 START_PROFILE(syscall_symlink);
1817 result = symlink(oldpath, newpath);
1818 END_PROFILE(syscall_symlink);
1819 return result;
1820 }
1821
1822 static int vfswrap_readlink(vfs_handle_struct *handle, const char *path, char *buf, size_t bufsiz)
1823 {
1824 int result;
1825
1826 START_PROFILE(syscall_readlink);
1827 result = readlink(path, buf, bufsiz);
1828 END_PROFILE(syscall_readlink);
1829 return result;
1830 }
1831
1832 static int vfswrap_link(vfs_handle_struct *handle, const char *oldpath, const char *newpath)
1833 {
1834 int result;
1835
1836 START_PROFILE(syscall_link);
1837 result = link(oldpath, newpath);
1838 END_PROFILE(syscall_link);
1839 return result;
1840 }
1841
1842 static int vfswrap_mknod(vfs_handle_struct *handle, const char *pathname, mode_t mode, SMB_DEV_T dev)
1843 {
1844 int result;
1845
1846 START_PROFILE(syscall_mknod);
1847 result = sys_mknod(pathname, mode, dev);
1848 END_PROFILE(syscall_mknod);
1849 return result;
1850 }
1851
1852 static char *vfswrap_realpath(vfs_handle_struct *handle, const char *path)
1853 {
1854 char *result;
1855
1856 START_PROFILE(syscall_realpath);
1857 #ifdef REALPATH_TAKES_NULL
1858 result = realpath(path, NULL);
1859 #else
1860 result = SMB_MALLOC_ARRAY(char, PATH_MAX+1);
1861 if (result) {
1862 char *resolved_path = realpath(path, result);
1863 if (!resolved_path) {
1864 SAFE_FREE(result);
1865 } else {
1866 /* SMB_ASSERT(result == resolved_path) ? */
1867 result = resolved_path;
1868 }
1869 }
1870 #endif
1871 END_PROFILE(syscall_realpath);
1872 return result;
1873 }
1874
1875 static NTSTATUS vfswrap_notify_watch(vfs_handle_struct *vfs_handle,
1876 struct sys_notify_context *ctx,
1877 const char *path,
1878 uint32_t *filter,
1879 uint32_t *subdir_filter,
1880 void (*callback)(struct sys_notify_context *ctx,
1881 void *private_data,
1882 struct notify_event *ev),
1883 void *private_data, void *handle)
1884 {
1885 /*
1886 * So far inotify is the only supported default notify mechanism. If
1887 * another platform like the the BSD's or a proprietary Unix comes
1888 * along and wants another default, we can play the same trick we
1889 * played with Posix ACLs.
1890 *
1891 * Until that is the case, hard-code inotify here.
1892 */
1893 #ifdef HAVE_INOTIFY
1894 if (lp_kernel_change_notify(vfs_handle->conn->params)) {
1895 return inotify_watch(ctx, path, filter, subdir_filter,
1896 callback, private_data, handle);
1897 }
1898 #endif
1899 /*
1900 * Do nothing, leave everything to notify_internal.c
1901 */
1902 return NT_STATUS_OK;
1903 }
1904
1905 static int vfswrap_chflags(vfs_handle_struct *handle, const char *path,
1906 unsigned int flags)
1907 {
1908 #ifdef HAVE_CHFLAGS
1909 return chflags(path, flags);
1910 #else
1911 errno = ENOSYS;
1912 return -1;
1913 #endif
1914 }
1915
1916 static struct file_id vfswrap_file_id_create(struct vfs_handle_struct *handle,
1917 const SMB_STRUCT_STAT *sbuf)
1918 {
1919 struct file_id key;
1920
1921 /* the ZERO_STRUCT ensures padding doesn't break using the key as a
1922 * blob */
1923 ZERO_STRUCT(key);
1924
1925 key.devid = sbuf->st_ex_dev;
1926 key.inode = sbuf->st_ex_ino;
1927 /* key.extid is unused by default. */
1928
1929 return key;
1930 }
1931
1932 static NTSTATUS vfswrap_streaminfo(vfs_handle_struct *handle,
1933 struct files_struct *fsp,
1934 const char *fname,
1935 TALLOC_CTX *mem_ctx,
1936 unsigned int *pnum_streams,
1937 struct stream_struct **pstreams)
1938 {
1939 SMB_STRUCT_STAT sbuf;
1940 struct stream_struct *tmp_streams = NULL;
1941 int ret;
1942
1943 if ((fsp != NULL) && (fsp->is_directory)) {
1944 /*
1945 * No default streams on directories
1946 */
1947 goto done;
1948 }
1949
1950 if ((fsp != NULL) && (fsp->fh->fd != -1)) {
1951 ret = SMB_VFS_FSTAT(fsp, &sbuf);
1952 }
1953 else {
1954 struct smb_filename smb_fname;
1955
1956 ZERO_STRUCT(smb_fname);
1957 smb_fname.base_name = discard_const_p(char, fname);
1958
1959 if (lp_posix_pathnames()) {
1960 ret = SMB_VFS_LSTAT(handle->conn, &smb_fname);
1961 } else {
1962 ret = SMB_VFS_STAT(handle->conn, &smb_fname);
1963 }
1964 sbuf = smb_fname.st;
1965 }
1966
1967 if (ret == -1) {
1968 return map_nt_error_from_unix(errno);
1969 }
1970
1971 if (S_ISDIR(sbuf.st_ex_mode)) {
1972 goto done;
1973 }
1974
1975 tmp_streams = talloc_realloc(mem_ctx, *pstreams, struct stream_struct,
1976 (*pnum_streams) + 1);
1977 if (tmp_streams == NULL) {
1978 return NT_STATUS_NO_MEMORY;
1979 }
1980 tmp_streams[*pnum_streams].name = talloc_strdup(tmp_streams, "::$DATA");
1981 if (tmp_streams[*pnum_streams].name == NULL) {
1982 return NT_STATUS_NO_MEMORY;
1983 }
1984 tmp_streams[*pnum_streams].size = sbuf.st_ex_size;
1985 tmp_streams[*pnum_streams].alloc_size = SMB_VFS_GET_ALLOC_SIZE(handle->conn, fsp, &sbuf);
1986
1987 *pnum_streams += 1;
1988 *pstreams = tmp_streams;
1989 done:
1990 return NT_STATUS_OK;
1991 }
1992
1993 static int vfswrap_get_real_filename(struct vfs_handle_struct *handle,
1994 const char *path,
1995 const char *name,
1996 TALLOC_CTX *mem_ctx,
1997 char **found_name)
1998 {
1999 /*
2000 * Don't fall back to get_real_filename so callers can differentiate
2001 * between a full directory scan and an actual case-insensitive stat.
2002 */
2003 errno = EOPNOTSUPP;
2004 return -1;
2005 }
2006
2007 static const char *vfswrap_connectpath(struct vfs_handle_struct *handle,
2008 const char *fname)
2009 {
2010 return handle->conn->connectpath;
2011 }
2012
2013 static NTSTATUS vfswrap_brl_lock_windows(struct vfs_handle_struct *handle,
2014 struct byte_range_lock *br_lck,
2015 struct lock_struct *plock,
2016 bool blocking_lock,
2017 struct blocking_lock_record *blr)
2018 {
2019 SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2020
2021 /* Note: blr is not used in the default implementation. */
2022 return brl_lock_windows_default(br_lck, plock, blocking_lock);
2023 }
2024
2025 static bool vfswrap_brl_unlock_windows(struct vfs_handle_struct *handle,
2026 struct messaging_context *msg_ctx,
2027 struct byte_range_lock *br_lck,
2028 const struct lock_struct *plock)
2029 {
2030 SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2031
2032 return brl_unlock_windows_default(msg_ctx, br_lck, plock);
2033 }
2034
2035 static bool vfswrap_brl_cancel_windows(struct vfs_handle_struct *handle,
2036 struct byte_range_lock *br_lck,
2037 struct lock_struct *plock,
2038 struct blocking_lock_record *blr)
2039 {
2040 SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2041
2042 /* Note: blr is not used in the default implementation. */
2043 return brl_lock_cancel_default(br_lck, plock);
2044 }
2045
2046 static bool vfswrap_strict_lock(struct vfs_handle_struct *handle,
2047 files_struct *fsp,
2048 struct lock_struct *plock)
2049 {
2050 SMB_ASSERT(plock->lock_type == READ_LOCK ||
2051 plock->lock_type == WRITE_LOCK);
2052
2053 return strict_lock_default(fsp, plock);
2054 }
2055
2056 static void vfswrap_strict_unlock(struct vfs_handle_struct *handle,
2057 files_struct *fsp,
2058 struct lock_struct *plock)
2059 {
2060 SMB_ASSERT(plock->lock_type == READ_LOCK ||
2061 plock->lock_type == WRITE_LOCK);
2062
2063 strict_unlock_default(fsp, plock);
2064 }
2065
2066 /* NT ACL operations. */
2067
2068 static NTSTATUS vfswrap_fget_nt_acl(vfs_handle_struct *handle,
2069 files_struct *fsp,
2070 uint32 security_info,
2071 TALLOC_CTX *mem_ctx,
2072 struct security_descriptor **ppdesc)
2073 {
2074 NTSTATUS result;
2075
2076 START_PROFILE(fget_nt_acl);
2077 result = posix_fget_nt_acl(fsp, security_info,
2078 mem_ctx, ppdesc);
2079 END_PROFILE(fget_nt_acl);
2080 return result;
2081 }
2082
2083 static NTSTATUS vfswrap_get_nt_acl(vfs_handle_struct *handle,
2084 const char *name,
2085 uint32 security_info,
2086 TALLOC_CTX *mem_ctx,
2087 struct security_descriptor **ppdesc)
2088 {
2089 NTSTATUS result;
2090
2091 START_PROFILE(get_nt_acl);
2092 result = posix_get_nt_acl(handle->conn, name, security_info,
2093 mem_ctx, ppdesc);
2094 END_PROFILE(get_nt_acl);
2095 return result;
2096 }
2097
2098 static NTSTATUS vfswrap_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const struct security_descriptor *psd)
2099 {
2100 NTSTATUS result;
2101
2102 START_PROFILE(fset_nt_acl);
2103 result = set_nt_acl(fsp, security_info_sent, psd);
2104 END_PROFILE(fset_nt_acl);
2105 return result;
2106 }
2107
2108 static NTSTATUS vfswrap_audit_file(struct vfs_handle_struct *handle,
2109 struct smb_filename *file,
2110 struct security_acl *sacl,
2111 uint32_t access_requested,
2112 uint32_t access_denied)
2113 {
2114 return NT_STATUS_OK; /* Nothing to do here ... */
2115 }
2116
2117 static int vfswrap_chmod_acl(vfs_handle_struct *handle, const char *name, mode_t mode)
2118 {
2119 #ifdef HAVE_NO_ACL
2120 errno = ENOSYS;
2121 return -1;
2122 #else
2123 int result;
2124
2125 START_PROFILE(chmod_acl);
2126 result = chmod_acl(handle->conn, name, mode);
2127 END_PROFILE(chmod_acl);
2128 return result;
2129 #endif
2130 }
2131
2132 static int vfswrap_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
2133 {
2134 #ifdef HAVE_NO_ACL
2135 errno = ENOSYS;
2136 return -1;
2137 #else
2138 int result;
2139
2140 START_PROFILE(fchmod_acl);
2141 result = fchmod_acl(fsp, mode);
2142 END_PROFILE(fchmod_acl);
2143 return result;
2144 #endif
2145 }
2146
2147 static SMB_ACL_T vfswrap_sys_acl_get_file(vfs_handle_struct *handle,
2148 const char *path_p,
2149 SMB_ACL_TYPE_T type,
2150 TALLOC_CTX *mem_ctx)
2151 {
2152 return sys_acl_get_file(handle, path_p, type, mem_ctx);
2153 }
2154
2155 static SMB_ACL_T vfswrap_sys_acl_get_fd(vfs_handle_struct *handle,
2156 files_struct *fsp,
2157 TALLOC_CTX *mem_ctx)
2158 {
2159 return sys_acl_get_fd(handle, fsp, mem_ctx);
2160 }
2161
2162 static int vfswrap_sys_acl_blob_get_file(vfs_handle_struct *handle,
2163 const char *path_p,
2164 TALLOC_CTX *mem_ctx,
2165 char **blob_description,
2166 DATA_BLOB *blob)
2167 {
2168 errno = ENOSYS;
2169 return -1;
2170 }
2171
2172 static int vfswrap_sys_acl_blob_get_fd(vfs_handle_struct *handle,
2173 files_struct *fsp,
2174 TALLOC_CTX *mem_ctx,
2175 char **blob_description,
2176 DATA_BLOB *blob)
2177 {
2178 errno = ENOSYS;
2179 return -1;
2180 }
2181
2182 static int vfswrap_sys_acl_set_file(vfs_handle_struct *handle, const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl)
2183 {
2184 return sys_acl_set_file(handle, name, acltype, theacl);
2185 }
2186
2187 static int vfswrap_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp, SMB_ACL_T theacl)
2188 {
2189 return sys_acl_set_fd(handle, fsp, theacl);
2190 }
2191
2192 static int vfswrap_sys_acl_delete_def_file(vfs_handle_struct *handle, const char *path)
2193 {
2194 return sys_acl_delete_def_file(handle, path);
2195 }
2196
2197 /****************************************************************
2198 Extended attribute operations.
2199 *****************************************************************/
2200
2201 static ssize_t vfswrap_getxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
2202 {
2203 return getxattr(path, name, value, size);
2204 }
2205
2206 static ssize_t vfswrap_fgetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size)
2207 {
2208 return fgetxattr(fsp->fh->fd, name, value, size);
2209 }
2210
2211 static ssize_t vfswrap_listxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
2212 {
2213 return listxattr(path, list, size);
2214 }
2215
2216 static ssize_t vfswrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size)
2217 {
2218 return flistxattr(fsp->fh->fd, list, size);
2219 }
2220
2221 static int vfswrap_removexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
2222 {
2223 return removexattr(path, name);
2224 }
2225
2226 static int vfswrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name)
2227 {
2228 return fremovexattr(fsp->fh->fd, name);
2229 }
2230
2231 static int vfswrap_setxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
2232 {
2233 return setxattr(path, name, value, size, flags);
2234 }
2235
2236 static int vfswrap_fsetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags)
2237 {
2238 return fsetxattr(fsp->fh->fd, name, value, size, flags);
2239 }
2240
2241 static bool vfswrap_aio_force(struct vfs_handle_struct *handle, struct files_struct *fsp)
2242 {
2243 return false;
2244 }
2245
2246 static bool vfswrap_is_offline(struct vfs_handle_struct *handle,
2247 const struct smb_filename *fname,
2248 SMB_STRUCT_STAT *sbuf)
2249 {
2250 NTSTATUS status;
2251 char *path;
2252 bool offline = false;
2253
2254 if (ISDOT(fname->base_name) || ISDOTDOT(fname->base_name)) {
2255 return false;
2256 }
2257
2258 if (!lp_dmapi_support(SNUM(handle->conn)) || !dmapi_have_session()) {
2259 #if defined(ENOTSUP)
2260 errno = ENOTSUP;
2261 #endif
2262 return false;
2263 }
2264
2265 status = get_full_smb_filename(talloc_tos(), fname, &path);
2266 if (!NT_STATUS_IS_OK(status)) {
2267 errno = map_errno_from_nt_status(status);
2268 return false;
2269 }
2270
2271 offline = (dmapi_file_flags(path) & FILE_ATTRIBUTE_OFFLINE) != 0;
2272
2273 TALLOC_FREE(path);
2274
2275 return offline;
2276 }
2277
2278 static int vfswrap_set_offline(struct vfs_handle_struct *handle,
2279 const struct smb_filename *fname)
2280 {
2281 /* We don't know how to set offline bit by default, needs to be overriden in the vfs modules */
2282 #if defined(ENOTSUP)
2283 errno = ENOTSUP;
2284 #endif
2285 return -1;
2286 }
2287
2288 static NTSTATUS vfswrap_durable_cookie(struct vfs_handle_struct *handle,
2289 struct files_struct *fsp,
2290 TALLOC_CTX *mem_ctx,
2291 DATA_BLOB *cookie)
2292 {
2293 return vfs_default_durable_cookie(fsp, mem_ctx, cookie);
2294 }
2295
2296 static NTSTATUS vfswrap_durable_disconnect(struct vfs_handle_struct *handle,
2297 struct files_struct *fsp,
2298 const DATA_BLOB old_cookie,
2299 TALLOC_CTX *mem_ctx,
2300 DATA_BLOB *new_cookie)
2301 {
2302 return vfs_default_durable_disconnect(fsp, old_cookie, mem_ctx,
2303 new_cookie);
2304 }
2305
2306 static NTSTATUS vfswrap_durable_reconnect(struct vfs_handle_struct *handle,
2307 struct smb_request *smb1req,
2308 struct smbXsrv_open *op,
2309 const DATA_BLOB old_cookie,
2310 TALLOC_CTX *mem_ctx,
2311 struct files_struct **fsp,
2312 DATA_BLOB *new_cookie)
2313 {
2314 return vfs_default_durable_reconnect(handle->conn, smb1req, op,
2315 old_cookie, mem_ctx,
2316 fsp, new_cookie);
2317 }
2318
2319 static struct vfs_fn_pointers vfs_default_fns = {
2320 /* Disk operations */
2321
2322 .connect_fn = vfswrap_connect,
2323 .disconnect_fn = vfswrap_disconnect,
2324 .disk_free_fn = vfswrap_disk_free,
2325 .get_quota_fn = vfswrap_get_quota,
2326 .set_quota_fn = vfswrap_set_quota,
2327 .get_shadow_copy_data_fn = vfswrap_get_shadow_copy_data,
2328 .statvfs_fn = vfswrap_statvfs,
2329 .fs_capabilities_fn = vfswrap_fs_capabilities,
2330 .get_dfs_referrals_fn = vfswrap_get_dfs_referrals,
2331
2332 /* Directory operations */
2333
2334 .opendir_fn = vfswrap_opendir,
2335 .fdopendir_fn = vfswrap_fdopendir,
2336 .readdir_fn = vfswrap_readdir,
2337 .seekdir_fn = vfswrap_seekdir,
2338 .telldir_fn = vfswrap_telldir,
2339 .rewind_dir_fn = vfswrap_rewinddir,
2340 .mkdir_fn = vfswrap_mkdir,
2341 .rmdir_fn = vfswrap_rmdir,
2342 .closedir_fn = vfswrap_closedir,
2343 .init_search_op_fn = vfswrap_init_search_op,
2344
2345 /* File operations */
2346
2347 .open_fn = vfswrap_open,
2348 .create_file_fn = vfswrap_create_file,
2349 .close_fn = vfswrap_close,
2350 .read_fn = vfswrap_read,
2351 .pread_fn = vfswrap_pread,
2352 .pread_send_fn = vfswrap_pread_send,
2353 .pread_recv_fn = vfswrap_asys_ssize_t_recv,
2354 .write_fn = vfswrap_write,
2355 .pwrite_fn = vfswrap_pwrite,
2356 .pwrite_send_fn = vfswrap_pwrite_send,
2357 .pwrite_recv_fn = vfswrap_asys_ssize_t_recv,
2358 .lseek_fn = vfswrap_lseek,
2359 .sendfile_fn = vfswrap_sendfile,
2360 .recvfile_fn = vfswrap_recvfile,
2361 .rename_fn = vfswrap_rename,
2362 .fsync_fn = vfswrap_fsync,
2363 .fsync_send_fn = vfswrap_fsync_send,
2364 .fsync_recv_fn = vfswrap_asys_int_recv,
2365 .stat_fn = vfswrap_stat,
2366 .fstat_fn = vfswrap_fstat,
2367 .lstat_fn = vfswrap_lstat,
2368 .get_alloc_size_fn = vfswrap_get_alloc_size,
2369 .unlink_fn = vfswrap_unlink,
2370 .chmod_fn = vfswrap_chmod,
2371 .fchmod_fn = vfswrap_fchmod,
2372 .chown_fn = vfswrap_chown,
2373 .fchown_fn = vfswrap_fchown,
2374 .lchown_fn = vfswrap_lchown,
2375 .chdir_fn = vfswrap_chdir,
2376 .getwd_fn = vfswrap_getwd,
2377 .ntimes_fn = vfswrap_ntimes,
2378 .ftruncate_fn = vfswrap_ftruncate,
2379 .fallocate_fn = vfswrap_fallocate,
2380 .lock_fn = vfswrap_lock,
2381 .kernel_flock_fn = vfswrap_kernel_flock,
2382 .linux_setlease_fn = vfswrap_linux_setlease,
2383 .getlock_fn = vfswrap_getlock,
2384 .symlink_fn = vfswrap_symlink,
2385 .readlink_fn = vfswrap_readlink,
2386 .link_fn = vfswrap_link,
2387 .mknod_fn = vfswrap_mknod,
2388 .realpath_fn = vfswrap_realpath,
2389 .notify_watch_fn = vfswrap_notify_watch,
2390 .chflags_fn = vfswrap_chflags,
2391 .file_id_create_fn = vfswrap_file_id_create,
2392 .streaminfo_fn = vfswrap_streaminfo,
2393 .get_real_filename_fn = vfswrap_get_real_filename,
2394 .connectpath_fn = vfswrap_connectpath,
2395 .brl_lock_windows_fn = vfswrap_brl_lock_windows,
2396 .brl_unlock_windows_fn = vfswrap_brl_unlock_windows,
2397 .brl_cancel_windows_fn = vfswrap_brl_cancel_windows,
2398 .strict_lock_fn = vfswrap_strict_lock,
2399 .strict_unlock_fn = vfswrap_strict_unlock,
2400 .translate_name_fn = vfswrap_translate_name,
2401 .fsctl_fn = vfswrap_fsctl,
2402
2403 /* NT ACL operations. */
2404
2405 .fget_nt_acl_fn = vfswrap_fget_nt_acl,
2406 .get_nt_acl_fn = vfswrap_get_nt_acl,
2407 .fset_nt_acl_fn = vfswrap_fset_nt_acl,
2408 .audit_file_fn = vfswrap_audit_file,
2409
2410 /* POSIX ACL operations. */
2411
2412 .chmod_acl_fn = vfswrap_chmod_acl,
2413 .fchmod_acl_fn = vfswrap_fchmod_acl,
2414
2415 .sys_acl_get_file_fn = vfswrap_sys_acl_get_file,
2416 .sys_acl_get_fd_fn = vfswrap_sys_acl_get_fd,
2417 .sys_acl_blob_get_file_fn = vfswrap_sys_acl_blob_get_file,
2418 .sys_acl_blob_get_fd_fn = vfswrap_sys_acl_blob_get_fd,
2419 .sys_acl_set_file_fn = vfswrap_sys_acl_set_file,
2420 .sys_acl_set_fd_fn = vfswrap_sys_acl_set_fd,
2421 .sys_acl_delete_def_file_fn = vfswrap_sys_acl_delete_def_file,
2422
2423 /* EA operations. */
2424 .getxattr_fn = vfswrap_getxattr,
2425 .fgetxattr_fn = vfswrap_fgetxattr,
2426 .listxattr_fn = vfswrap_listxattr,
2427 .flistxattr_fn = vfswrap_flistxattr,
2428 .removexattr_fn = vfswrap_removexattr,
2429 .fremovexattr_fn = vfswrap_fremovexattr,
2430 .setxattr_fn = vfswrap_setxattr,
2431 .fsetxattr_fn = vfswrap_fsetxattr,
2432
2433 /* aio operations */
2434 .aio_force_fn = vfswrap_aio_force,
2435
2436 /* offline operations */
2437 .is_offline_fn = vfswrap_is_offline,
2438 .set_offline_fn = vfswrap_set_offline,
2439
2440 /* durable handle operations */
2441 .durable_cookie_fn = vfswrap_durable_cookie,
2442 .durable_disconnect_fn = vfswrap_durable_disconnect,
2443 .durable_reconnect_fn = vfswrap_durable_reconnect,
2444 };
2445
2446 NTSTATUS vfs_default_init(void);
2447 NTSTATUS vfs_default_init(void)
2448 {
2449 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
2450 DEFAULT_VFS_MODULE_NAME, &vfs_default_fns);
2451 }
2452
2453
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