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vfs_default: remove unused checks which are already caught by vfs_offload_token_check...
[Samba.git] / source3 / modules / vfs_default.c
blob58df47ee6b4cf87f9e487a9e154244b016361851
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/util/tevent_ntstatus.h"
34 #include "lib/util/sys_rw.h"
35 #include "lib/pthreadpool/pthreadpool_tevent.h"
36 #include "librpc/gen_ndr/ndr_ioctl.h"
37 #include "offload_token.h"
38
39 #undef DBGC_CLASS
40 #define DBGC_CLASS DBGC_VFS
41
42 /* Check for NULL pointer parameters in vfswrap_* functions */
43
44 /* We don't want to have NULL function pointers lying around. Someone
45 is sure to try and execute them. These stubs are used to prevent
46 this possibility. */
47
48 static int vfswrap_connect(vfs_handle_struct *handle, const char *service, const char *user)
49 {
50 return 0; /* Return >= 0 for success */
51 }
52
53 static void vfswrap_disconnect(vfs_handle_struct *handle)
54 {
55 }
56
57 /* Disk operations */
58
59 static uint64_t vfswrap_disk_free(vfs_handle_struct *handle,
60 const struct smb_filename *smb_fname,
61 uint64_t *bsize,
62 uint64_t *dfree,
63 uint64_t *dsize)
64 {
65 if (sys_fsusage(smb_fname->base_name, dfree, dsize) != 0) {
66 return (uint64_t)-1;
67 }
68
69 *bsize = 512;
70 return *dfree / 2;
71 }
72
73 static int vfswrap_get_quota(struct vfs_handle_struct *handle,
74 const struct smb_filename *smb_fname,
75 enum SMB_QUOTA_TYPE qtype,
76 unid_t id,
77 SMB_DISK_QUOTA *qt)
78 {
79 #ifdef HAVE_SYS_QUOTAS
80 int result;
81
82 START_PROFILE(syscall_get_quota);
83 result = sys_get_quota(smb_fname->base_name, qtype, id, qt);
84 END_PROFILE(syscall_get_quota);
85 return result;
86 #else
87 errno = ENOSYS;
88 return -1;
89 #endif
90 }
91
92 static int vfswrap_set_quota(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
93 {
94 #ifdef HAVE_SYS_QUOTAS
95 int result;
96
97 START_PROFILE(syscall_set_quota);
98 result = sys_set_quota(handle->conn->connectpath, qtype, id, qt);
99 END_PROFILE(syscall_set_quota);
100 return result;
101 #else
102 errno = ENOSYS;
103 return -1;
104 #endif
105 }
106
107 static int vfswrap_get_shadow_copy_data(struct vfs_handle_struct *handle,
108 struct files_struct *fsp,
109 struct shadow_copy_data *shadow_copy_data,
110 bool labels)
111 {
112 errno = ENOSYS;
113 return -1; /* Not implemented. */
114 }
115
116 static int vfswrap_statvfs(struct vfs_handle_struct *handle,
117 const struct smb_filename *smb_fname,
118 vfs_statvfs_struct *statbuf)
119 {
120 return sys_statvfs(smb_fname->base_name, statbuf);
121 }
122
123 static uint32_t vfswrap_fs_capabilities(struct vfs_handle_struct *handle,
124 enum timestamp_set_resolution *p_ts_res)
125 {
126 connection_struct *conn = handle->conn;
127 uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
128 struct smb_filename *smb_fname_cpath = NULL;
129 struct vfs_statvfs_struct statbuf;
130 int ret;
131
132 smb_fname_cpath = synthetic_smb_fname(talloc_tos(), conn->connectpath,
133 NULL, NULL, 0);
134 if (smb_fname_cpath == NULL) {
135 return caps;
136 }
137
138 ZERO_STRUCT(statbuf);
139 ret = SMB_VFS_STATVFS(conn, smb_fname_cpath, &statbuf);
140 if (ret == 0) {
141 caps = statbuf.FsCapabilities;
142 }
143
144 *p_ts_res = TIMESTAMP_SET_SECONDS;
145
146 /* Work out what timestamp resolution we can
147 * use when setting a timestamp. */
148
149 ret = SMB_VFS_STAT(conn, smb_fname_cpath);
150 if (ret == -1) {
151 TALLOC_FREE(smb_fname_cpath);
152 return caps;
153 }
154
155 if (smb_fname_cpath->st.st_ex_mtime.tv_nsec ||
156 smb_fname_cpath->st.st_ex_atime.tv_nsec ||
157 smb_fname_cpath->st.st_ex_ctime.tv_nsec) {
158 /* If any of the normal UNIX directory timestamps
159 * have a non-zero tv_nsec component assume
160 * we might be able to set sub-second timestamps.
161 * See what filetime set primitives we have.
162 */
163 #if defined(HAVE_UTIMENSAT)
164 *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
165 #elif defined(HAVE_UTIMES)
166 /* utimes allows msec timestamps to be set. */
167 *p_ts_res = TIMESTAMP_SET_MSEC;
168 #elif defined(HAVE_UTIME)
169 /* utime only allows sec timestamps to be set. */
170 *p_ts_res = TIMESTAMP_SET_SECONDS;
171 #endif
172
173 DEBUG(10,("vfswrap_fs_capabilities: timestamp "
174 "resolution of %s "
175 "available on share %s, directory %s\n",
176 *p_ts_res == TIMESTAMP_SET_MSEC ? "msec" : "sec",
177 lp_servicename(talloc_tos(), conn->params->service),
178 conn->connectpath ));
179 }
180 TALLOC_FREE(smb_fname_cpath);
181 return caps;
182 }
183
184 static NTSTATUS vfswrap_get_dfs_referrals(struct vfs_handle_struct *handle,
185 struct dfs_GetDFSReferral *r)
186 {
187 struct junction_map *junction = NULL;
188 int consumedcnt = 0;
189 bool self_referral = false;
190 char *pathnamep = NULL;
191 char *local_dfs_path = NULL;
192 NTSTATUS status;
193 int i;
194 uint16_t max_referral_level = r->in.req.max_referral_level;
195
196 if (DEBUGLVL(10)) {
197 NDR_PRINT_IN_DEBUG(dfs_GetDFSReferral, r);
198 }
199
200 /* get the junction entry */
201 if (r->in.req.servername == NULL) {
202 return NT_STATUS_NOT_FOUND;
203 }
204
205 /*
206 * Trim pathname sent by client so it begins with only one backslash.
207 * Two backslashes confuse some dfs clients
208 */
209
210 local_dfs_path = talloc_strdup(r, r->in.req.servername);
211 if (local_dfs_path == NULL) {
212 return NT_STATUS_NO_MEMORY;
213 }
214 pathnamep = local_dfs_path;
215 while (IS_DIRECTORY_SEP(pathnamep[0]) &&
216 IS_DIRECTORY_SEP(pathnamep[1])) {
217 pathnamep++;
218 }
219
220 junction = talloc_zero(r, struct junction_map);
221 if (junction == NULL) {
222 return NT_STATUS_NO_MEMORY;
223 }
224
225 /* The following call can change cwd. */
226 status = get_referred_path(r, pathnamep,
227 handle->conn->sconn->remote_address,
228 handle->conn->sconn->local_address,
229 !handle->conn->sconn->using_smb2,
230 junction, &consumedcnt, &self_referral);
231 if (!NT_STATUS_IS_OK(status)) {
232 struct smb_filename connectpath_fname = {
233 .base_name = handle->conn->connectpath
234 };
235 vfs_ChDir(handle->conn, &connectpath_fname);
236 return status;
237 }
238 {
239 struct smb_filename connectpath_fname = {
240 .base_name = handle->conn->connectpath
241 };
242 vfs_ChDir(handle->conn, &connectpath_fname);
243 }
244
245 if (!self_referral) {
246 pathnamep[consumedcnt] = '\0';
247
248 if (DEBUGLVL(3)) {
249 dbgtext("Path %s to alternate path(s):",
250 pathnamep);
251 for (i=0; i < junction->referral_count; i++) {
252 dbgtext(" %s",
253 junction->referral_list[i].alternate_path);
254 }
255 dbgtext(".\n");
256 }
257 }
258
259 if (r->in.req.max_referral_level <= 2) {
260 max_referral_level = 2;
261 }
262 if (r->in.req.max_referral_level >= 3) {
263 max_referral_level = 3;
264 }
265
266 r->out.resp = talloc_zero(r, struct dfs_referral_resp);
267 if (r->out.resp == NULL) {
268 return NT_STATUS_NO_MEMORY;
269 }
270
271 r->out.resp->path_consumed = strlen_m(pathnamep) * 2;
272 r->out.resp->nb_referrals = junction->referral_count;
273
274 r->out.resp->header_flags = DFS_HEADER_FLAG_STORAGE_SVR;
275 if (self_referral) {
276 r->out.resp->header_flags |= DFS_HEADER_FLAG_REFERAL_SVR;
277 }
278
279 r->out.resp->referral_entries = talloc_zero_array(r,
280 struct dfs_referral_type,
281 r->out.resp->nb_referrals);
282 if (r->out.resp->referral_entries == NULL) {
283 return NT_STATUS_NO_MEMORY;
284 }
285
286 switch (max_referral_level) {
287 case 2:
288 for(i=0; i < junction->referral_count; i++) {
289 struct referral *ref = &junction->referral_list[i];
290 TALLOC_CTX *mem_ctx = r->out.resp->referral_entries;
291 struct dfs_referral_type *t =
292 &r->out.resp->referral_entries[i];
293 struct dfs_referral_v2 *v2 = &t->referral.v2;
294
295 t->version = 2;
296 v2->size = VERSION2_REFERRAL_SIZE;
297 if (self_referral) {
298 v2->server_type = DFS_SERVER_ROOT;
299 } else {
300 v2->server_type = DFS_SERVER_NON_ROOT;
301 }
302 v2->entry_flags = 0;
303 v2->proximity = ref->proximity;
304 v2->ttl = ref->ttl;
305 v2->DFS_path = talloc_strdup(mem_ctx, pathnamep);
306 if (v2->DFS_path == NULL) {
307 return NT_STATUS_NO_MEMORY;
308 }
309 v2->DFS_alt_path = talloc_strdup(mem_ctx, pathnamep);
310 if (v2->DFS_alt_path == NULL) {
311 return NT_STATUS_NO_MEMORY;
312 }
313 v2->netw_address = talloc_strdup(mem_ctx,
314 ref->alternate_path);
315 if (v2->netw_address == NULL) {
316 return NT_STATUS_NO_MEMORY;
317 }
318 }
319
320 break;
321 case 3:
322 for(i=0; i < junction->referral_count; i++) {
323 struct referral *ref = &junction->referral_list[i];
324 TALLOC_CTX *mem_ctx = r->out.resp->referral_entries;
325 struct dfs_referral_type *t =
326 &r->out.resp->referral_entries[i];
327 struct dfs_referral_v3 *v3 = &t->referral.v3;
328 struct dfs_normal_referral *r1 = &v3->referrals.r1;
329
330 t->version = 3;
331 v3->size = VERSION3_REFERRAL_SIZE;
332 if (self_referral) {
333 v3->server_type = DFS_SERVER_ROOT;
334 } else {
335 v3->server_type = DFS_SERVER_NON_ROOT;
336 }
337 v3->entry_flags = 0;
338 v3->ttl = ref->ttl;
339 r1->DFS_path = talloc_strdup(mem_ctx, pathnamep);
340 if (r1->DFS_path == NULL) {
341 return NT_STATUS_NO_MEMORY;
342 }
343 r1->DFS_alt_path = talloc_strdup(mem_ctx, pathnamep);
344 if (r1->DFS_alt_path == NULL) {
345 return NT_STATUS_NO_MEMORY;
346 }
347 r1->netw_address = talloc_strdup(mem_ctx,
348 ref->alternate_path);
349 if (r1->netw_address == NULL) {
350 return NT_STATUS_NO_MEMORY;
351 }
352 }
353 break;
354 default:
355 DEBUG(0,("Invalid dfs referral version: %d\n",
356 max_referral_level));
357 return NT_STATUS_INVALID_LEVEL;
358 }
359
360 if (DEBUGLVL(10)) {
361 NDR_PRINT_OUT_DEBUG(dfs_GetDFSReferral, r);
362 }
363
364 return NT_STATUS_OK;
365 }
366
367 static NTSTATUS vfswrap_snap_check_path(struct vfs_handle_struct *handle,
368 TALLOC_CTX *mem_ctx,
369 const char *service_path,
370 char **base_volume)
371 {
372 return NT_STATUS_NOT_SUPPORTED;
373 }
374
375 static NTSTATUS vfswrap_snap_create(struct vfs_handle_struct *handle,
376 TALLOC_CTX *mem_ctx,
377 const char *base_volume,
378 time_t *tstamp,
379 bool rw,
380 char **base_path,
381 char **snap_path)
382 {
383 return NT_STATUS_NOT_SUPPORTED;
384 }
385
386 static NTSTATUS vfswrap_snap_delete(struct vfs_handle_struct *handle,
387 TALLOC_CTX *mem_ctx,
388 char *base_path,
389 char *snap_path)
390 {
391 return NT_STATUS_NOT_SUPPORTED;
392 }
393
394 /* Directory operations */
395
396 static DIR *vfswrap_opendir(vfs_handle_struct *handle,
397 const struct smb_filename *smb_fname,
398 const char *mask,
399 uint32_t attr)
400 {
401 DIR *result;
402
403 START_PROFILE(syscall_opendir);
404 result = opendir(smb_fname->base_name);
405 END_PROFILE(syscall_opendir);
406 return result;
407 }
408
409 static DIR *vfswrap_fdopendir(vfs_handle_struct *handle,
410 files_struct *fsp,
411 const char *mask,
412 uint32_t attr)
413 {
414 DIR *result;
415
416 START_PROFILE(syscall_fdopendir);
417 result = sys_fdopendir(fsp->fh->fd);
418 END_PROFILE(syscall_fdopendir);
419 return result;
420 }
421
422
423 static struct dirent *vfswrap_readdir(vfs_handle_struct *handle,
424 DIR *dirp,
425 SMB_STRUCT_STAT *sbuf)
426 {
427 struct dirent *result;
428
429 START_PROFILE(syscall_readdir);
430 result = readdir(dirp);
431 END_PROFILE(syscall_readdir);
432 if (sbuf) {
433 /* Default Posix readdir() does not give us stat info.
434 * Set to invalid to indicate we didn't return this info. */
435 SET_STAT_INVALID(*sbuf);
436 #if defined(HAVE_DIRFD) && defined(HAVE_FSTATAT)
437 if (result != NULL) {
438 /* See if we can efficiently return this. */
439 struct stat st;
440 int flags = AT_SYMLINK_NOFOLLOW;
441 int ret = fstatat(dirfd(dirp),
442 result->d_name,
443 &st,
444 flags);
445 /*
446 * As this is an optimization,
447 * ignore it if we stat'ed a
448 * symlink. Make the caller
449 * do it again as we don't
450 * know if they wanted the link
451 * info, or its target info.
452 */
453 if ((ret == 0) && (!S_ISLNK(st.st_mode))) {
454 init_stat_ex_from_stat(sbuf,
455 &st,
456 lp_fake_directory_create_times(
457 SNUM(handle->conn)));
458 }
459 }
460 #endif
461 }
462 return result;
463 }
464
465 static NTSTATUS vfswrap_readdir_attr(struct vfs_handle_struct *handle,
466 const struct smb_filename *fname,
467 TALLOC_CTX *mem_ctx,
468 struct readdir_attr_data **attr_data)
469 {
470 return NT_STATUS_NOT_SUPPORTED;
471 }
472
473 static void vfswrap_seekdir(vfs_handle_struct *handle, DIR *dirp, long offset)
474 {
475 START_PROFILE(syscall_seekdir);
476 seekdir(dirp, offset);
477 END_PROFILE(syscall_seekdir);
478 }
479
480 static long vfswrap_telldir(vfs_handle_struct *handle, DIR *dirp)
481 {
482 long result;
483 START_PROFILE(syscall_telldir);
484 result = telldir(dirp);
485 END_PROFILE(syscall_telldir);
486 return result;
487 }
488
489 static void vfswrap_rewinddir(vfs_handle_struct *handle, DIR *dirp)
490 {
491 START_PROFILE(syscall_rewinddir);
492 rewinddir(dirp);
493 END_PROFILE(syscall_rewinddir);
494 }
495
496 static int vfswrap_mkdir(vfs_handle_struct *handle,
497 const struct smb_filename *smb_fname,
498 mode_t mode)
499 {
500 int result;
501 const char *path = smb_fname->base_name;
502 char *parent = NULL;
503
504 START_PROFILE(syscall_mkdir);
505
506 if (lp_inherit_acls(SNUM(handle->conn))
507 && parent_dirname(talloc_tos(), path, &parent, NULL)
508 && directory_has_default_acl(handle->conn, parent)) {
509 mode = (0777 & lp_directory_mask(SNUM(handle->conn)));
510 }
511
512 TALLOC_FREE(parent);
513
514 result = mkdir(path, mode);
515
516 END_PROFILE(syscall_mkdir);
517 return result;
518 }
519
520 static int vfswrap_rmdir(vfs_handle_struct *handle,
521 const struct smb_filename *smb_fname)
522 {
523 int result;
524
525 START_PROFILE(syscall_rmdir);
526 result = rmdir(smb_fname->base_name);
527 END_PROFILE(syscall_rmdir);
528 return result;
529 }
530
531 static int vfswrap_closedir(vfs_handle_struct *handle, DIR *dirp)
532 {
533 int result;
534
535 START_PROFILE(syscall_closedir);
536 result = closedir(dirp);
537 END_PROFILE(syscall_closedir);
538 return result;
539 }
540
541 /* File operations */
542
543 static int vfswrap_open(vfs_handle_struct *handle,
544 struct smb_filename *smb_fname,
545 files_struct *fsp, int flags, mode_t mode)
546 {
547 int result = -1;
548
549 START_PROFILE(syscall_open);
550
551 if (smb_fname->stream_name) {
552 errno = ENOENT;
553 goto out;
554 }
555
556 result = open(smb_fname->base_name, flags, mode);
557 out:
558 END_PROFILE(syscall_open);
559 return result;
560 }
561
562 static NTSTATUS vfswrap_create_file(vfs_handle_struct *handle,
563 struct smb_request *req,
564 uint16_t root_dir_fid,
565 struct smb_filename *smb_fname,
566 uint32_t access_mask,
567 uint32_t share_access,
568 uint32_t create_disposition,
569 uint32_t create_options,
570 uint32_t file_attributes,
571 uint32_t oplock_request,
572 struct smb2_lease *lease,
573 uint64_t allocation_size,
574 uint32_t private_flags,
575 struct security_descriptor *sd,
576 struct ea_list *ea_list,
577 files_struct **result,
578 int *pinfo,
579 const struct smb2_create_blobs *in_context_blobs,
580 struct smb2_create_blobs *out_context_blobs)
581 {
582 return create_file_default(handle->conn, req, root_dir_fid, smb_fname,
583 access_mask, share_access,
584 create_disposition, create_options,
585 file_attributes, oplock_request, lease,
586 allocation_size, private_flags,
587 sd, ea_list, result,
588 pinfo, in_context_blobs, out_context_blobs);
589 }
590
591 static int vfswrap_close(vfs_handle_struct *handle, files_struct *fsp)
592 {
593 int result;
594
595 START_PROFILE(syscall_close);
596 result = fd_close_posix(fsp);
597 END_PROFILE(syscall_close);
598 return result;
599 }
600
601 static ssize_t vfswrap_pread(vfs_handle_struct *handle, files_struct *fsp, void *data,
602 size_t n, off_t offset)
603 {
604 ssize_t result;
605
606 #if defined(HAVE_PREAD) || defined(HAVE_PREAD64)
607 START_PROFILE_BYTES(syscall_pread, n);
608 result = sys_pread(fsp->fh->fd, data, n, offset);
609 END_PROFILE_BYTES(syscall_pread);
610
611 if (result == -1 && errno == ESPIPE) {
612 /* Maintain the fiction that pipes can be seeked (sought?) on. */
613 result = sys_read(fsp->fh->fd, data, n);
614 fsp->fh->pos = 0;
615 }
616
617 #else /* HAVE_PREAD */
618 errno = ENOSYS;
619 result = -1;
620 #endif /* HAVE_PREAD */
621
622 return result;
623 }
624
625 static ssize_t vfswrap_pwrite(vfs_handle_struct *handle, files_struct *fsp, const void *data,
626 size_t n, off_t offset)
627 {
628 ssize_t result;
629
630 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
631 START_PROFILE_BYTES(syscall_pwrite, n);
632 result = sys_pwrite(fsp->fh->fd, data, n, offset);
633 END_PROFILE_BYTES(syscall_pwrite);
634
635 if (result == -1 && errno == ESPIPE) {
636 /* Maintain the fiction that pipes can be sought on. */
637 result = sys_write(fsp->fh->fd, data, n);
638 }
639
640 #else /* HAVE_PWRITE */
641 errno = ENOSYS;
642 result = -1;
643 #endif /* HAVE_PWRITE */
644
645 return result;
646 }
647
648 struct vfswrap_pread_state {
649 ssize_t ret;
650 int fd;
651 void *buf;
652 size_t count;
653 off_t offset;
654
655 struct vfs_aio_state vfs_aio_state;
656 SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
657 };
658
659 static void vfs_pread_do(void *private_data);
660 static void vfs_pread_done(struct tevent_req *subreq);
661 static int vfs_pread_state_destructor(struct vfswrap_pread_state *state);
662
663 static struct tevent_req *vfswrap_pread_send(struct vfs_handle_struct *handle,
664 TALLOC_CTX *mem_ctx,
665 struct tevent_context *ev,
666 struct files_struct *fsp,
667 void *data,
668 size_t n, off_t offset)
669 {
670 struct tevent_req *req, *subreq;
671 struct vfswrap_pread_state *state;
672
673 req = tevent_req_create(mem_ctx, &state, struct vfswrap_pread_state);
674 if (req == NULL) {
675 return NULL;
676 }
677
678 state->ret = -1;
679 state->fd = fsp->fh->fd;
680 state->buf = data;
681 state->count = n;
682 state->offset = offset;
683
684 SMBPROFILE_BYTES_ASYNC_START(syscall_asys_pread, profile_p,
685 state->profile_bytes, n);
686 SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
687
688 subreq = pthreadpool_tevent_job_send(
689 state, ev, handle->conn->sconn->pool,
690 vfs_pread_do, state);
691 if (tevent_req_nomem(subreq, req)) {
692 return tevent_req_post(req, ev);
693 }
694 tevent_req_set_callback(subreq, vfs_pread_done, req);
695
696 talloc_set_destructor(state, vfs_pread_state_destructor);
697
698 return req;
699 }
700
701 static void vfs_pread_do(void *private_data)
702 {
703 struct vfswrap_pread_state *state = talloc_get_type_abort(
704 private_data, struct vfswrap_pread_state);
705 struct timespec start_time;
706 struct timespec end_time;
707
708 SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
709
710 PROFILE_TIMESTAMP(&start_time);
711
712 do {
713 state->ret = pread(state->fd, state->buf, state->count,
714 state->offset);
715 } while ((state->ret == -1) && (errno == EINTR));
716
717 if (state->ret == -1) {
718 state->vfs_aio_state.error = errno;
719 }
720
721 PROFILE_TIMESTAMP(&end_time);
722
723 state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
724
725 SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
726 }
727
728 static int vfs_pread_state_destructor(struct vfswrap_pread_state *state)
729 {
730 return -1;
731 }
732
733 static void vfs_pread_done(struct tevent_req *subreq)
734 {
735 struct tevent_req *req = tevent_req_callback_data(
736 subreq, struct tevent_req);
737 struct vfswrap_pread_state *state = tevent_req_data(
738 req, struct vfswrap_pread_state);
739 int ret;
740
741 ret = pthreadpool_tevent_job_recv(subreq);
742 TALLOC_FREE(subreq);
743 SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
744 talloc_set_destructor(state, NULL);
745 if (tevent_req_error(req, ret)) {
746 return;
747 }
748
749 tevent_req_done(req);
750 }
751
752 static ssize_t vfswrap_pread_recv(struct tevent_req *req,
753 struct vfs_aio_state *vfs_aio_state)
754 {
755 struct vfswrap_pread_state *state = tevent_req_data(
756 req, struct vfswrap_pread_state);
757
758 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
759 return -1;
760 }
761
762 *vfs_aio_state = state->vfs_aio_state;
763 return state->ret;
764 }
765
766 struct vfswrap_pwrite_state {
767 ssize_t ret;
768 int fd;
769 const void *buf;
770 size_t count;
771 off_t offset;
772
773 struct vfs_aio_state vfs_aio_state;
774 SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
775 };
776
777 static void vfs_pwrite_do(void *private_data);
778 static void vfs_pwrite_done(struct tevent_req *subreq);
779 static int vfs_pwrite_state_destructor(struct vfswrap_pwrite_state *state);
780
781 static struct tevent_req *vfswrap_pwrite_send(struct vfs_handle_struct *handle,
782 TALLOC_CTX *mem_ctx,
783 struct tevent_context *ev,
784 struct files_struct *fsp,
785 const void *data,
786 size_t n, off_t offset)
787 {
788 struct tevent_req *req, *subreq;
789 struct vfswrap_pwrite_state *state;
790
791 req = tevent_req_create(mem_ctx, &state, struct vfswrap_pwrite_state);
792 if (req == NULL) {
793 return NULL;
794 }
795
796 state->ret = -1;
797 state->fd = fsp->fh->fd;
798 state->buf = data;
799 state->count = n;
800 state->offset = offset;
801
802 SMBPROFILE_BYTES_ASYNC_START(syscall_asys_pwrite, profile_p,
803 state->profile_bytes, n);
804 SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
805
806 subreq = pthreadpool_tevent_job_send(
807 state, ev, handle->conn->sconn->pool,
808 vfs_pwrite_do, state);
809 if (tevent_req_nomem(subreq, req)) {
810 return tevent_req_post(req, ev);
811 }
812 tevent_req_set_callback(subreq, vfs_pwrite_done, req);
813
814 talloc_set_destructor(state, vfs_pwrite_state_destructor);
815
816 return req;
817 }
818
819 static void vfs_pwrite_do(void *private_data)
820 {
821 struct vfswrap_pwrite_state *state = talloc_get_type_abort(
822 private_data, struct vfswrap_pwrite_state);
823 struct timespec start_time;
824 struct timespec end_time;
825
826 SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
827
828 PROFILE_TIMESTAMP(&start_time);
829
830 do {
831 state->ret = pwrite(state->fd, state->buf, state->count,
832 state->offset);
833 } while ((state->ret == -1) && (errno == EINTR));
834
835 if (state->ret == -1) {
836 state->vfs_aio_state.error = errno;
837 }
838
839 PROFILE_TIMESTAMP(&end_time);
840
841 state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
842
843 SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
844 }
845
846 static int vfs_pwrite_state_destructor(struct vfswrap_pwrite_state *state)
847 {
848 return -1;
849 }
850
851 static void vfs_pwrite_done(struct tevent_req *subreq)
852 {
853 struct tevent_req *req = tevent_req_callback_data(
854 subreq, struct tevent_req);
855 struct vfswrap_pwrite_state *state = tevent_req_data(
856 req, struct vfswrap_pwrite_state);
857 int ret;
858
859 ret = pthreadpool_tevent_job_recv(subreq);
860 TALLOC_FREE(subreq);
861 SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
862 talloc_set_destructor(state, NULL);
863 if (tevent_req_error(req, ret)) {
864 return;
865 }
866
867 tevent_req_done(req);
868 }
869
870 static ssize_t vfswrap_pwrite_recv(struct tevent_req *req,
871 struct vfs_aio_state *vfs_aio_state)
872 {
873 struct vfswrap_pwrite_state *state = tevent_req_data(
874 req, struct vfswrap_pwrite_state);
875
876 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
877 return -1;
878 }
879
880 *vfs_aio_state = state->vfs_aio_state;
881 return state->ret;
882 }
883
884 struct vfswrap_fsync_state {
885 ssize_t ret;
886 int fd;
887
888 struct vfs_aio_state vfs_aio_state;
889 SMBPROFILE_BASIC_ASYNC_STATE(profile_basic);
890 };
891
892 static void vfs_fsync_do(void *private_data);
893 static void vfs_fsync_done(struct tevent_req *subreq);
894 static int vfs_fsync_state_destructor(struct vfswrap_fsync_state *state);
895
896 static struct tevent_req *vfswrap_fsync_send(struct vfs_handle_struct *handle,
897 TALLOC_CTX *mem_ctx,
898 struct tevent_context *ev,
899 struct files_struct *fsp)
900 {
901 struct tevent_req *req, *subreq;
902 struct vfswrap_fsync_state *state;
903
904 req = tevent_req_create(mem_ctx, &state, struct vfswrap_fsync_state);
905 if (req == NULL) {
906 return NULL;
907 }
908
909 state->ret = -1;
910 state->fd = fsp->fh->fd;
911
912 SMBPROFILE_BASIC_ASYNC_START(syscall_asys_fsync, profile_p,
913 state->profile_basic);
914
915 subreq = pthreadpool_tevent_job_send(
916 state, ev, handle->conn->sconn->pool, vfs_fsync_do, state);
917 if (tevent_req_nomem(subreq, req)) {
918 return tevent_req_post(req, ev);
919 }
920 tevent_req_set_callback(subreq, vfs_fsync_done, req);
921
922 talloc_set_destructor(state, vfs_fsync_state_destructor);
923
924 return req;
925 }
926
927 static void vfs_fsync_do(void *private_data)
928 {
929 struct vfswrap_fsync_state *state = talloc_get_type_abort(
930 private_data, struct vfswrap_fsync_state);
931 struct timespec start_time;
932 struct timespec end_time;
933
934 PROFILE_TIMESTAMP(&start_time);
935
936 do {
937 state->ret = fsync(state->fd);
938 } while ((state->ret == -1) && (errno == EINTR));
939
940 if (state->ret == -1) {
941 state->vfs_aio_state.error = errno;
942 }
943
944 PROFILE_TIMESTAMP(&end_time);
945
946 state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
947 }
948
949 static int vfs_fsync_state_destructor(struct vfswrap_fsync_state *state)
950 {
951 return -1;
952 }
953
954 static void vfs_fsync_done(struct tevent_req *subreq)
955 {
956 struct tevent_req *req = tevent_req_callback_data(
957 subreq, struct tevent_req);
958 struct vfswrap_fsync_state *state = tevent_req_data(
959 req, struct vfswrap_fsync_state);
960 int ret;
961
962 ret = pthreadpool_tevent_job_recv(subreq);
963 TALLOC_FREE(subreq);
964 SMBPROFILE_BASIC_ASYNC_END(state->profile_basic);
965 talloc_set_destructor(state, NULL);
966 if (tevent_req_error(req, ret)) {
967 return;
968 }
969
970 tevent_req_done(req);
971 }
972
973 static int vfswrap_fsync_recv(struct tevent_req *req,
974 struct vfs_aio_state *vfs_aio_state)
975 {
976 struct vfswrap_fsync_state *state = tevent_req_data(
977 req, struct vfswrap_fsync_state);
978
979 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
980 return -1;
981 }
982
983 *vfs_aio_state = state->vfs_aio_state;
984 return state->ret;
985 }
986
987 static off_t vfswrap_lseek(vfs_handle_struct *handle, files_struct *fsp, off_t offset, int whence)
988 {
989 off_t result = 0;
990
991 START_PROFILE(syscall_lseek);
992
993 /* Cope with 'stat' file opens. */
994 if (fsp->fh->fd != -1)
995 result = lseek(fsp->fh->fd, offset, whence);
996
997 /*
998 * We want to maintain the fiction that we can seek
999 * on a fifo for file system purposes. This allows
1000 * people to set up UNIX fifo's that feed data to Windows
1001 * applications. JRA.
1002 */
1003
1004 if((result == -1) && (errno == ESPIPE)) {
1005 result = 0;
1006 errno = 0;
1007 }
1008
1009 END_PROFILE(syscall_lseek);
1010 return result;
1011 }
1012
1013 static ssize_t vfswrap_sendfile(vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *hdr,
1014 off_t offset, size_t n)
1015 {
1016 ssize_t result;
1017
1018 START_PROFILE_BYTES(syscall_sendfile, n);
1019 result = sys_sendfile(tofd, fromfsp->fh->fd, hdr, offset, n);
1020 END_PROFILE_BYTES(syscall_sendfile);
1021 return result;
1022 }
1023
1024 static ssize_t vfswrap_recvfile(vfs_handle_struct *handle,
1025 int fromfd,
1026 files_struct *tofsp,
1027 off_t offset,
1028 size_t n)
1029 {
1030 ssize_t result;
1031
1032 START_PROFILE_BYTES(syscall_recvfile, n);
1033 result = sys_recvfile(fromfd, tofsp->fh->fd, offset, n);
1034 END_PROFILE_BYTES(syscall_recvfile);
1035 return result;
1036 }
1037
1038 static int vfswrap_rename(vfs_handle_struct *handle,
1039 const struct smb_filename *smb_fname_src,
1040 const struct smb_filename *smb_fname_dst)
1041 {
1042 int result = -1;
1043
1044 START_PROFILE(syscall_rename);
1045
1046 if (smb_fname_src->stream_name || smb_fname_dst->stream_name) {
1047 errno = ENOENT;
1048 goto out;
1049 }
1050
1051 result = rename(smb_fname_src->base_name, smb_fname_dst->base_name);
1052
1053 out:
1054 END_PROFILE(syscall_rename);
1055 return result;
1056 }
1057
1058 static int vfswrap_stat(vfs_handle_struct *handle,
1059 struct smb_filename *smb_fname)
1060 {
1061 int result = -1;
1062
1063 START_PROFILE(syscall_stat);
1064
1065 if (smb_fname->stream_name) {
1066 errno = ENOENT;
1067 goto out;
1068 }
1069
1070 result = sys_stat(smb_fname->base_name, &smb_fname->st,
1071 lp_fake_directory_create_times(SNUM(handle->conn)));
1072 out:
1073 END_PROFILE(syscall_stat);
1074 return result;
1075 }
1076
1077 static int vfswrap_fstat(vfs_handle_struct *handle, files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1078 {
1079 int result;
1080
1081 START_PROFILE(syscall_fstat);
1082 result = sys_fstat(fsp->fh->fd,
1083 sbuf, lp_fake_directory_create_times(SNUM(handle->conn)));
1084 END_PROFILE(syscall_fstat);
1085 return result;
1086 }
1087
1088 static int vfswrap_lstat(vfs_handle_struct *handle,
1089 struct smb_filename *smb_fname)
1090 {
1091 int result = -1;
1092
1093 START_PROFILE(syscall_lstat);
1094
1095 if (smb_fname->stream_name) {
1096 errno = ENOENT;
1097 goto out;
1098 }
1099
1100 result = sys_lstat(smb_fname->base_name, &smb_fname->st,
1101 lp_fake_directory_create_times(SNUM(handle->conn)));
1102 out:
1103 END_PROFILE(syscall_lstat);
1104 return result;
1105 }
1106
1107 static NTSTATUS vfswrap_translate_name(struct vfs_handle_struct *handle,
1108 const char *name,
1109 enum vfs_translate_direction direction,
1110 TALLOC_CTX *mem_ctx,
1111 char **mapped_name)
1112 {
1113 return NT_STATUS_NONE_MAPPED;
1114 }
1115
1116 /*
1117 * Implement the default fsctl operation.
1118 */
1119 static bool vfswrap_logged_ioctl_message = false;
1120
1121 static NTSTATUS vfswrap_fsctl(struct vfs_handle_struct *handle,
1122 struct files_struct *fsp,
1123 TALLOC_CTX *ctx,
1124 uint32_t function,
1125 uint16_t req_flags, /* Needed for UNICODE ... */
1126 const uint8_t *_in_data,
1127 uint32_t in_len,
1128 uint8_t **_out_data,
1129 uint32_t max_out_len,
1130 uint32_t *out_len)
1131 {
1132 const char *in_data = (const char *)_in_data;
1133 char **out_data = (char **)_out_data;
1134 NTSTATUS status;
1135
1136 switch (function) {
1137 case FSCTL_SET_SPARSE:
1138 {
1139 bool set_sparse = true;
1140
1141 if (in_len >= 1 && in_data[0] == 0) {
1142 set_sparse = false;
1143 }
1144
1145 status = file_set_sparse(handle->conn, fsp, set_sparse);
1146
1147 DEBUG(NT_STATUS_IS_OK(status) ? 10 : 9,
1148 ("FSCTL_SET_SPARSE: fname[%s] set[%u] - %s\n",
1149 smb_fname_str_dbg(fsp->fsp_name), set_sparse,
1150 nt_errstr(status)));
1151
1152 return status;
1153 }
1154
1155 case FSCTL_CREATE_OR_GET_OBJECT_ID:
1156 {
1157 unsigned char objid[16];
1158 char *return_data = NULL;
1159
1160 /* This should return the object-id on this file.
1161 * I think I'll make this be the inode+dev. JRA.
1162 */
1163
1164 DEBUG(10,("FSCTL_CREATE_OR_GET_OBJECT_ID: called on %s\n",
1165 fsp_fnum_dbg(fsp)));
1166
1167 *out_len = MIN(max_out_len, 64);
1168
1169 /* Hmmm, will this cause problems if less data asked for? */
1170 return_data = talloc_array(ctx, char, 64);
1171 if (return_data == NULL) {
1172 return NT_STATUS_NO_MEMORY;
1173 }
1174
1175 /* For backwards compatibility only store the dev/inode. */
1176 push_file_id_16(return_data, &fsp->file_id);
1177 memcpy(return_data+16,create_volume_objectid(fsp->conn,objid),16);
1178 push_file_id_16(return_data+32, &fsp->file_id);
1179 memset(return_data+48, 0, 16);
1180 *out_data = return_data;
1181 return NT_STATUS_OK;
1182 }
1183
1184 case FSCTL_GET_REPARSE_POINT:
1185 {
1186 /* Fail it with STATUS_NOT_A_REPARSE_POINT */
1187 DEBUG(10, ("FSCTL_GET_REPARSE_POINT: called on %s. "
1188 "Status: NOT_IMPLEMENTED\n", fsp_fnum_dbg(fsp)));
1189 return NT_STATUS_NOT_A_REPARSE_POINT;
1190 }
1191
1192 case FSCTL_SET_REPARSE_POINT:
1193 {
1194 /* Fail it with STATUS_NOT_A_REPARSE_POINT */
1195 DEBUG(10, ("FSCTL_SET_REPARSE_POINT: called on %s. "
1196 "Status: NOT_IMPLEMENTED\n", fsp_fnum_dbg(fsp)));
1197 return NT_STATUS_NOT_A_REPARSE_POINT;
1198 }
1199
1200 case FSCTL_GET_SHADOW_COPY_DATA:
1201 {
1202 /*
1203 * This is called to retrieve the number of Shadow Copies (a.k.a. snapshots)
1204 * and return their volume names. If max_data_count is 16, then it is just
1205 * asking for the number of volumes and length of the combined names.
1206 *
1207 * pdata is the data allocated by our caller, but that uses
1208 * total_data_count (which is 0 in our case) rather than max_data_count.
1209 * Allocate the correct amount and return the pointer to let
1210 * it be deallocated when we return.
1211 */
1212 struct shadow_copy_data *shadow_data = NULL;
1213 bool labels = False;
1214 uint32_t labels_data_count = 0;
1215 uint32_t i;
1216 char *cur_pdata = NULL;
1217
1218 if (max_out_len < 16) {
1219 DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) < 16 is invalid!\n",
1220 max_out_len));
1221 return NT_STATUS_INVALID_PARAMETER;
1222 }
1223
1224 if (max_out_len > 16) {
1225 labels = True;
1226 }
1227
1228 shadow_data = talloc_zero(ctx, struct shadow_copy_data);
1229 if (shadow_data == NULL) {
1230 DEBUG(0,("TALLOC_ZERO() failed!\n"));
1231 return NT_STATUS_NO_MEMORY;
1232 }
1233
1234 /*
1235 * Call the VFS routine to actually do the work.
1236 */
1237 if (SMB_VFS_GET_SHADOW_COPY_DATA(fsp, shadow_data, labels)!=0) {
1238 int log_lev = 0;
1239 if (errno == 0) {
1240 /* broken module didn't set errno on error */
1241 status = NT_STATUS_UNSUCCESSFUL;
1242 } else {
1243 status = map_nt_error_from_unix(errno);
1244 if (NT_STATUS_EQUAL(status,
1245 NT_STATUS_NOT_SUPPORTED)) {
1246 log_lev = 5;
1247 }
1248 }
1249 DEBUG(log_lev, ("FSCTL_GET_SHADOW_COPY_DATA: "
1250 "connectpath %s, failed - %s.\n",
1251 fsp->conn->connectpath,
1252 nt_errstr(status)));
1253 TALLOC_FREE(shadow_data);
1254 return status;
1255 }
1256
1257 labels_data_count = (shadow_data->num_volumes * 2 *
1258 sizeof(SHADOW_COPY_LABEL)) + 2;
1259
1260 if (!labels) {
1261 *out_len = 16;
1262 } else {
1263 *out_len = 12 + labels_data_count;
1264 }
1265
1266 if (max_out_len < *out_len) {
1267 DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) too small (%u) bytes needed!\n",
1268 max_out_len, *out_len));
1269 TALLOC_FREE(shadow_data);
1270 return NT_STATUS_BUFFER_TOO_SMALL;
1271 }
1272
1273 cur_pdata = talloc_zero_array(ctx, char, *out_len);
1274 if (cur_pdata == NULL) {
1275 TALLOC_FREE(shadow_data);
1276 return NT_STATUS_NO_MEMORY;
1277 }
1278
1279 *out_data = cur_pdata;
1280
1281 /* num_volumes 4 bytes */
1282 SIVAL(cur_pdata, 0, shadow_data->num_volumes);
1283
1284 if (labels) {
1285 /* num_labels 4 bytes */
1286 SIVAL(cur_pdata, 4, shadow_data->num_volumes);
1287 }
1288
1289 /* needed_data_count 4 bytes */
1290 SIVAL(cur_pdata, 8, labels_data_count);
1291
1292 cur_pdata += 12;
1293
1294 DEBUG(10,("FSCTL_GET_SHADOW_COPY_DATA: %u volumes for path[%s].\n",
1295 shadow_data->num_volumes, fsp_str_dbg(fsp)));
1296 if (labels && shadow_data->labels) {
1297 for (i=0; i<shadow_data->num_volumes; i++) {
1298 size_t len = 0;
1299 status = srvstr_push(cur_pdata, req_flags,
1300 cur_pdata, shadow_data->labels[i],
1301 2 * sizeof(SHADOW_COPY_LABEL),
1302 STR_UNICODE|STR_TERMINATE, &len);
1303 if (!NT_STATUS_IS_OK(status)) {
1304 TALLOC_FREE(*out_data);
1305 TALLOC_FREE(shadow_data);
1306 return status;
1307 }
1308 cur_pdata += 2 * sizeof(SHADOW_COPY_LABEL);
1309 DEBUGADD(10,("Label[%u]: '%s'\n",i,shadow_data->labels[i]));
1310 }
1311 }
1312
1313 TALLOC_FREE(shadow_data);
1314
1315 return NT_STATUS_OK;
1316 }
1317
1318 case FSCTL_FIND_FILES_BY_SID:
1319 {
1320 /* pretend this succeeded -
1321 *
1322 * we have to send back a list with all files owned by this SID
1323 *
1324 * but I have to check that --metze
1325 */
1326 struct dom_sid sid;
1327 uid_t uid;
1328 size_t sid_len;
1329
1330 DEBUG(10, ("FSCTL_FIND_FILES_BY_SID: called on %s\n",
1331 fsp_fnum_dbg(fsp)));
1332
1333 if (in_len < 8) {
1334 /* NT_STATUS_BUFFER_TOO_SMALL maybe? */
1335 return NT_STATUS_INVALID_PARAMETER;
1336 }
1337
1338 sid_len = MIN(in_len - 4,SID_MAX_SIZE);
1339
1340 /* unknown 4 bytes: this is not the length of the sid :-( */
1341 /*unknown = IVAL(pdata,0);*/
1342
1343 if (!sid_parse(_in_data + 4, sid_len, &sid)) {
1344 return NT_STATUS_INVALID_PARAMETER;
1345 }
1346 DEBUGADD(10, ("for SID: %s\n", sid_string_dbg(&sid)));
1347
1348 if (!sid_to_uid(&sid, &uid)) {
1349 DEBUG(0,("sid_to_uid: failed, sid[%s] sid_len[%lu]\n",
1350 sid_string_dbg(&sid),
1351 (unsigned long)sid_len));
1352 uid = (-1);
1353 }
1354
1355 /* we can take a look at the find source :-)
1356 *
1357 * find ./ -uid $uid -name '*' is what we need here
1358 *
1359 *
1360 * and send 4bytes len and then NULL terminated unicode strings
1361 * for each file
1362 *
1363 * but I don't know how to deal with the paged results
1364 * (maybe we can hang the result anywhere in the fsp struct)
1365 *
1366 * but I don't know how to deal with the paged results
1367 * (maybe we can hang the result anywhere in the fsp struct)
1368 *
1369 * we don't send all files at once
1370 * and at the next we should *not* start from the beginning,
1371 * so we have to cache the result
1372 *
1373 * --metze
1374 */
1375
1376 /* this works for now... */
1377 return NT_STATUS_OK;
1378 }
1379
1380 case FSCTL_QUERY_ALLOCATED_RANGES:
1381 {
1382 /* FIXME: This is just a dummy reply, telling that all of the
1383 * file is allocated. MKS cp needs that.
1384 * Adding the real allocated ranges via FIEMAP on Linux
1385 * and SEEK_DATA/SEEK_HOLE on Solaris is needed to make
1386 * this FSCTL correct for sparse files.
1387 */
1388 uint64_t offset, length;
1389 char *out_data_tmp = NULL;
1390
1391 if (in_len != 16) {
1392 DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: data_count(%u) != 16 is invalid!\n",
1393 in_len));
1394 return NT_STATUS_INVALID_PARAMETER;
1395 }
1396
1397 if (max_out_len < 16) {
1398 DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: max_out_len (%u) < 16 is invalid!\n",
1399 max_out_len));
1400 return NT_STATUS_INVALID_PARAMETER;
1401 }
1402
1403 offset = BVAL(in_data,0);
1404 length = BVAL(in_data,8);
1405
1406 if (offset + length < offset) {
1407 /* No 64-bit integer wrap. */
1408 return NT_STATUS_INVALID_PARAMETER;
1409 }
1410
1411 /* Shouldn't this be SMB_VFS_STAT ... ? */
1412 status = vfs_stat_fsp(fsp);
1413 if (!NT_STATUS_IS_OK(status)) {
1414 return status;
1415 }
1416
1417 *out_len = 16;
1418 out_data_tmp = talloc_array(ctx, char, *out_len);
1419 if (out_data_tmp == NULL) {
1420 DEBUG(10, ("unable to allocate memory for response\n"));
1421 return NT_STATUS_NO_MEMORY;
1422 }
1423
1424 if (offset > fsp->fsp_name->st.st_ex_size ||
1425 fsp->fsp_name->st.st_ex_size == 0 ||
1426 length == 0) {
1427 memset(out_data_tmp, 0, *out_len);
1428 } else {
1429 uint64_t end = offset + length;
1430 end = MIN(end, fsp->fsp_name->st.st_ex_size);
1431 SBVAL(out_data_tmp, 0, 0);
1432 SBVAL(out_data_tmp, 8, end);
1433 }
1434
1435 *out_data = out_data_tmp;
1436
1437 return NT_STATUS_OK;
1438 }
1439
1440 case FSCTL_IS_VOLUME_DIRTY:
1441 {
1442 DEBUG(10,("FSCTL_IS_VOLUME_DIRTY: called on %s "
1443 "(but remotely not supported)\n", fsp_fnum_dbg(fsp)));
1444 /*
1445 * http://msdn.microsoft.com/en-us/library/cc232128%28PROT.10%29.aspx
1446 * says we have to respond with NT_STATUS_INVALID_PARAMETER
1447 */
1448 return NT_STATUS_INVALID_PARAMETER;
1449 }
1450
1451 default:
1452 /*
1453 * Only print once ... unfortunately there could be lots of
1454 * different FSCTLs that are called.
1455 */
1456 if (!vfswrap_logged_ioctl_message) {
1457 vfswrap_logged_ioctl_message = true;
1458 DEBUG(2, ("%s (0x%x): Currently not implemented.\n",
1459 __func__, function));
1460 }
1461 }
1462
1463 return NT_STATUS_NOT_SUPPORTED;
1464 }
1465
1466 static bool vfswrap_is_offline(struct vfs_handle_struct *handle,
1467 const struct smb_filename *fname,
1468 SMB_STRUCT_STAT *sbuf);
1469
1470 static NTSTATUS vfswrap_get_dos_attributes(struct vfs_handle_struct *handle,
1471 struct smb_filename *smb_fname,
1472 uint32_t *dosmode)
1473 {
1474 bool offline;
1475
1476 offline = vfswrap_is_offline(handle, smb_fname, &smb_fname->st);
1477 if (offline) {
1478 *dosmode |= FILE_ATTRIBUTE_OFFLINE;
1479 }
1480
1481 return get_ea_dos_attribute(handle->conn, smb_fname, dosmode);
1482 }
1483
1484 static NTSTATUS vfswrap_fget_dos_attributes(struct vfs_handle_struct *handle,
1485 struct files_struct *fsp,
1486 uint32_t *dosmode)
1487 {
1488 bool offline;
1489
1490 offline = vfswrap_is_offline(handle, fsp->fsp_name, &fsp->fsp_name->st);
1491 if (offline) {
1492 *dosmode |= FILE_ATTRIBUTE_OFFLINE;
1493 }
1494
1495 return get_ea_dos_attribute(handle->conn, fsp->fsp_name, dosmode);
1496 }
1497
1498 static NTSTATUS vfswrap_set_dos_attributes(struct vfs_handle_struct *handle,
1499 const struct smb_filename *smb_fname,
1500 uint32_t dosmode)
1501 {
1502 return set_ea_dos_attribute(handle->conn, smb_fname, dosmode);
1503 }
1504
1505 static NTSTATUS vfswrap_fset_dos_attributes(struct vfs_handle_struct *handle,
1506 struct files_struct *fsp,
1507 uint32_t dosmode)
1508 {
1509 return set_ea_dos_attribute(handle->conn, fsp->fsp_name, dosmode);
1510 }
1511
1512 static struct vfs_offload_ctx *vfswrap_offload_ctx;
1513
1514 struct vfswrap_offload_read_state {
1515 DATA_BLOB token;
1516 };
1517
1518 static struct tevent_req *vfswrap_offload_read_send(
1519 TALLOC_CTX *mem_ctx,
1520 struct tevent_context *ev,
1521 struct vfs_handle_struct *handle,
1522 struct files_struct *fsp,
1523 uint32_t fsctl,
1524 uint32_t ttl,
1525 off_t offset,
1526 size_t to_copy)
1527 {
1528 struct tevent_req *req = NULL;
1529 struct vfswrap_offload_read_state *state = NULL;
1530 NTSTATUS status;
1531
1532 req = tevent_req_create(mem_ctx, &state,
1533 struct vfswrap_offload_read_state);
1534 if (req == NULL) {
1535 return NULL;
1536 }
1537
1538 status = vfs_offload_token_ctx_init(fsp->conn->sconn->client,
1539 &vfswrap_offload_ctx);
1540 if (tevent_req_nterror(req, status)) {
1541 return tevent_req_post(req, ev);
1542 }
1543
1544 if (fsctl != FSCTL_SRV_REQUEST_RESUME_KEY) {
1545 tevent_req_nterror(req, NT_STATUS_INVALID_DEVICE_REQUEST);
1546 return tevent_req_post(req, ev);
1547 }
1548
1549 status = vfs_offload_token_create_blob(state, fsp, fsctl,
1550 &state->token);
1551 if (tevent_req_nterror(req, status)) {
1552 return tevent_req_post(req, ev);
1553 }
1554
1555 status = vfs_offload_token_db_store_fsp(vfswrap_offload_ctx, fsp,
1556 &state->token);
1557 if (tevent_req_nterror(req, status)) {
1558 return tevent_req_post(req, ev);
1559 }
1560
1561 tevent_req_done(req);
1562 return tevent_req_post(req, ev);
1563 }
1564
1565 static NTSTATUS vfswrap_offload_read_recv(struct tevent_req *req,
1566 struct vfs_handle_struct *handle,
1567 TALLOC_CTX *mem_ctx,
1568 DATA_BLOB *token)
1569 {
1570 struct vfswrap_offload_read_state *state = tevent_req_data(
1571 req, struct vfswrap_offload_read_state);
1572 NTSTATUS status;
1573
1574 if (tevent_req_is_nterror(req, &status)) {
1575 tevent_req_received(req);
1576 return status;
1577 }
1578
1579 token->length = state->token.length;
1580 token->data = talloc_move(mem_ctx, &state->token.data);
1581
1582 tevent_req_received(req);
1583 return NT_STATUS_OK;
1584 }
1585
1586 struct vfswrap_offload_write_state {
1587 struct tevent_context *ev;
1588 uint8_t *buf;
1589 bool read_lck_locked;
1590 bool write_lck_locked;
1591 DATA_BLOB *token;
1592 struct files_struct *src_fsp;
1593 off_t src_off;
1594 struct files_struct *dst_fsp;
1595 off_t dst_off;
1596 off_t to_copy;
1597 off_t remaining;
1598 size_t next_io_size;
1599 };
1600
1601 static NTSTATUS vfswrap_offload_write_loop(struct tevent_req *req);
1602
1603 static struct tevent_req *vfswrap_offload_write_send(
1604 struct vfs_handle_struct *handle,
1605 TALLOC_CTX *mem_ctx,
1606 struct tevent_context *ev,
1607 uint32_t fsctl,
1608 DATA_BLOB *token,
1609 off_t transfer_offset,
1610 struct files_struct *dest_fsp,
1611 off_t dest_off,
1612 off_t to_copy)
1613 {
1614 struct tevent_req *req;
1615 struct vfswrap_offload_write_state *state = NULL;
1616 size_t num = MIN(to_copy, COPYCHUNK_MAX_TOTAL_LEN);
1617 files_struct *src_fsp = NULL;
1618 NTSTATUS status;
1619
1620 req = tevent_req_create(mem_ctx, &state,
1621 struct vfswrap_offload_write_state);
1622 if (req == NULL) {
1623 return NULL;
1624 }
1625
1626 *state = (struct vfswrap_offload_write_state) {
1627 .ev = ev,
1628 .token = token,
1629 .src_off = transfer_offset,
1630 .dst_fsp = dest_fsp,
1631 .dst_off = dest_off,
1632 .to_copy = to_copy,
1633 .remaining = to_copy,
1634 };
1635
1636 switch (fsctl) {
1637 case FSCTL_SRV_COPYCHUNK:
1638 case FSCTL_SRV_COPYCHUNK_WRITE:
1639 break;
1640
1641 case FSCTL_OFFLOAD_WRITE:
1642 tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
1643 return tevent_req_post(req, ev);
1644
1645 case FSCTL_DUP_EXTENTS_TO_FILE:
1646 DBG_DEBUG("COW clones not supported by vfs_default\n");
1647 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
1648 return tevent_req_post(req, ev);
1649
1650 default:
1651 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
1652 return tevent_req_post(req, ev);
1653 }
1654
1655 /*
1656 * From here on we assume a copy-chunk fsctl
1657 */
1658
1659 if (to_copy == 0) {
1660 tevent_req_done(req);
1661 return tevent_req_post(req, ev);
1662 }
1663
1664 status = vfs_offload_token_db_fetch_fsp(vfswrap_offload_ctx,
1665 token, &src_fsp);
1666 if (tevent_req_nterror(req, status)) {
1667 return tevent_req_post(req, ev);
1668 }
1669 state->src_fsp = src_fsp;
1670
1671 DBG_DEBUG("server side copy chunk of length %" PRIu64 "\n", to_copy);
1672
1673 status = vfs_offload_token_check_handles(fsctl, src_fsp, dest_fsp);
1674 if (!NT_STATUS_IS_OK(status)) {
1675 tevent_req_nterror(req, status);
1676 return tevent_req_post(req, ev);
1677 }
1678
1679 state->buf = talloc_array(state, uint8_t, num);
1680 if (tevent_req_nomem(state->buf, req)) {
1681 return tevent_req_post(req, ev);
1682 }
1683
1684 status = vfs_stat_fsp(src_fsp);
1685 if (tevent_req_nterror(req, status)) {
1686 return tevent_req_post(req, ev);
1687 }
1688
1689 if (src_fsp->fsp_name->st.st_ex_size < state->src_off + num) {
1690 /*
1691 * [MS-SMB2] 3.3.5.15.6 Handling a Server-Side Data Copy Request
1692 * If the SourceOffset or SourceOffset + Length extends beyond
1693 * the end of file, the server SHOULD<240> treat this as a
1694 * STATUS_END_OF_FILE error.
1695 * ...
1696 * <240> Section 3.3.5.15.6: Windows servers will return
1697 * STATUS_INVALID_VIEW_SIZE instead of STATUS_END_OF_FILE.
1698 */
1699 tevent_req_nterror(req, NT_STATUS_INVALID_VIEW_SIZE);
1700 return tevent_req_post(req, ev);
1701 }
1702
1703 status = vfswrap_offload_write_loop(req);
1704 if (!NT_STATUS_IS_OK(status)) {
1705 tevent_req_nterror(req, status);
1706 return tevent_req_post(req, ev);
1707 }
1708
1709 return req;
1710 }
1711
1712 static void vfswrap_offload_write_read_done(struct tevent_req *subreq);
1713
1714 static NTSTATUS vfswrap_offload_write_loop(struct tevent_req *req)
1715 {
1716 struct vfswrap_offload_write_state *state = tevent_req_data(
1717 req, struct vfswrap_offload_write_state);
1718 struct tevent_req *subreq = NULL;
1719 struct lock_struct read_lck;
1720 bool ok;
1721
1722 state->next_io_size = MIN(state->remaining, talloc_array_length(state->buf));
1723
1724 init_strict_lock_struct(state->src_fsp,
1725 state->src_fsp->op->global->open_persistent_id,
1726 state->src_off,
1727 state->next_io_size,
1728 READ_LOCK,
1729 &read_lck);
1730
1731 ok = SMB_VFS_STRICT_LOCK_CHECK(state->src_fsp->conn,
1732 state->src_fsp,
1733 &read_lck);
1734 if (!ok) {
1735 return NT_STATUS_FILE_LOCK_CONFLICT;
1736 }
1737
1738 subreq = SMB_VFS_PREAD_SEND(state,
1739 state->src_fsp->conn->sconn->ev_ctx,
1740 state->src_fsp,
1741 state->buf,
1742 state->next_io_size,
1743 state->src_off);
1744 if (subreq == NULL) {
1745 return NT_STATUS_NO_MEMORY;
1746 }
1747 tevent_req_set_callback(subreq, vfswrap_offload_write_read_done, req);
1748
1749 return NT_STATUS_OK;
1750 }
1751
1752 static void vfswrap_offload_write_write_done(struct tevent_req *subreq);
1753
1754 static void vfswrap_offload_write_read_done(struct tevent_req *subreq)
1755 {
1756 struct tevent_req *req = tevent_req_callback_data(
1757 subreq, struct tevent_req);
1758 struct vfswrap_offload_write_state *state = tevent_req_data(
1759 req, struct vfswrap_offload_write_state);
1760 struct vfs_aio_state aio_state;
1761 struct lock_struct write_lck;
1762 ssize_t nread;
1763 bool ok;
1764
1765 nread = SMB_VFS_PREAD_RECV(subreq, &aio_state);
1766 TALLOC_FREE(subreq);
1767 if (nread == -1) {
1768 DBG_ERR("read failed: %s\n", strerror(errno));
1769 tevent_req_nterror(req, map_nt_error_from_unix(aio_state.error));
1770 return;
1771 }
1772 if (nread != state->next_io_size) {
1773 DBG_ERR("Short read, only %zd of %zu\n",
1774 nread, state->next_io_size);
1775 tevent_req_nterror(req, NT_STATUS_IO_DEVICE_ERROR);
1776 return;
1777 }
1778
1779 state->src_off += nread;
1780
1781 init_strict_lock_struct(state->dst_fsp,
1782 state->dst_fsp->op->global->open_persistent_id,
1783 state->dst_off,
1784 state->next_io_size,
1785 WRITE_LOCK,
1786 &write_lck);
1787
1788 ok = SMB_VFS_STRICT_LOCK_CHECK(state->dst_fsp->conn,
1789 state->dst_fsp,
1790 &write_lck);
1791 if (!ok) {
1792 tevent_req_nterror(req, NT_STATUS_FILE_LOCK_CONFLICT);
1793 return;
1794 }
1795
1796 subreq = SMB_VFS_PWRITE_SEND(state,
1797 state->ev,
1798 state->dst_fsp,
1799 state->buf,
1800 state->next_io_size,
1801 state->dst_off);
1802 if (subreq == NULL) {
1803 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
1804 return;
1805 }
1806 tevent_req_set_callback(subreq, vfswrap_offload_write_write_done, req);
1807 }
1808
1809 static void vfswrap_offload_write_write_done(struct tevent_req *subreq)
1810 {
1811 struct tevent_req *req = tevent_req_callback_data(
1812 subreq, struct tevent_req);
1813 struct vfswrap_offload_write_state *state = tevent_req_data(
1814 req, struct vfswrap_offload_write_state);
1815 struct vfs_aio_state aio_state;
1816 ssize_t nwritten;
1817 NTSTATUS status;
1818
1819 nwritten = SMB_VFS_PWRITE_RECV(subreq, &aio_state);
1820 TALLOC_FREE(subreq);
1821 if (nwritten == -1) {
1822 DBG_ERR("write failed: %s\n", strerror(errno));
1823 tevent_req_nterror(req, map_nt_error_from_unix(aio_state.error));
1824 return;
1825 }
1826 if (nwritten != state->next_io_size) {
1827 DBG_ERR("Short write, only %zd of %zu\n", nwritten, state->next_io_size);
1828 tevent_req_nterror(req, NT_STATUS_IO_DEVICE_ERROR);
1829 return;
1830 }
1831
1832 state->dst_off += nwritten;
1833
1834 if (state->remaining < nwritten) {
1835 /* Paranoia check */
1836 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
1837 return;
1838 }
1839 state->remaining -= nwritten;
1840 if (state->remaining == 0) {
1841 tevent_req_done(req);
1842 return;
1843 }
1844
1845 status = vfswrap_offload_write_loop(req);
1846 if (!NT_STATUS_IS_OK(status)) {
1847 tevent_req_nterror(req, status);
1848 return;
1849 }
1850
1851 return;
1852 }
1853
1854 static NTSTATUS vfswrap_offload_write_recv(struct vfs_handle_struct *handle,
1855 struct tevent_req *req,
1856 off_t *copied)
1857 {
1858 struct vfswrap_offload_write_state *state = tevent_req_data(
1859 req, struct vfswrap_offload_write_state);
1860 NTSTATUS status;
1861
1862 if (tevent_req_is_nterror(req, &status)) {
1863 DBG_DEBUG("copy chunk failed: %s\n", nt_errstr(status));
1864 *copied = 0;
1865 tevent_req_received(req);
1866 return status;
1867 }
1868
1869 *copied = state->to_copy;
1870 DBG_DEBUG("copy chunk copied %lu\n", (unsigned long)*copied);
1871 tevent_req_received(req);
1872
1873 return NT_STATUS_OK;
1874 }
1875
1876 static NTSTATUS vfswrap_get_compression(struct vfs_handle_struct *handle,
1877 TALLOC_CTX *mem_ctx,
1878 struct files_struct *fsp,
1879 struct smb_filename *smb_fname,
1880 uint16_t *_compression_fmt)
1881 {
1882 return NT_STATUS_INVALID_DEVICE_REQUEST;
1883 }
1884
1885 static NTSTATUS vfswrap_set_compression(struct vfs_handle_struct *handle,
1886 TALLOC_CTX *mem_ctx,
1887 struct files_struct *fsp,
1888 uint16_t compression_fmt)
1889 {
1890 return NT_STATUS_INVALID_DEVICE_REQUEST;
1891 }
1892
1893 /********************************************************************
1894 Given a stat buffer return the allocated size on disk, taking into
1895 account sparse files.
1896 ********************************************************************/
1897 static uint64_t vfswrap_get_alloc_size(vfs_handle_struct *handle,
1898 struct files_struct *fsp,
1899 const SMB_STRUCT_STAT *sbuf)
1900 {
1901 uint64_t result;
1902
1903 START_PROFILE(syscall_get_alloc_size);
1904
1905 if(S_ISDIR(sbuf->st_ex_mode)) {
1906 result = 0;
1907 goto out;
1908 }
1909
1910 #if defined(HAVE_STAT_ST_BLOCKS) && defined(STAT_ST_BLOCKSIZE)
1911 /* The type of st_blocksize is blkcnt_t which *MUST* be
1912 signed (according to POSIX) and can be less than 64-bits.
1913 Ensure when we're converting to 64 bits wide we don't
1914 sign extend. */
1915 #if defined(SIZEOF_BLKCNT_T_8)
1916 result = (uint64_t)STAT_ST_BLOCKSIZE * (uint64_t)sbuf->st_ex_blocks;
1917 #elif defined(SIZEOF_BLKCNT_T_4)
1918 {
1919 uint64_t bs = ((uint64_t)sbuf->st_ex_blocks) & 0xFFFFFFFFLL;
1920 result = (uint64_t)STAT_ST_BLOCKSIZE * bs;
1921 }
1922 #else
1923 #error SIZEOF_BLKCNT_T_NOT_A_SUPPORTED_VALUE
1924 #endif
1925 if (result == 0) {
1926 /*
1927 * Some file systems do not allocate a block for very
1928 * small files. But for non-empty file should report a
1929 * positive size.
1930 */
1931
1932 uint64_t filesize = get_file_size_stat(sbuf);
1933 if (filesize > 0) {
1934 result = MIN((uint64_t)STAT_ST_BLOCKSIZE, filesize);
1935 }
1936 }
1937 #else
1938 result = get_file_size_stat(sbuf);
1939 #endif
1940
1941 if (fsp && fsp->initial_allocation_size)
1942 result = MAX(result,fsp->initial_allocation_size);
1943
1944 result = smb_roundup(handle->conn, result);
1945
1946 out:
1947 END_PROFILE(syscall_get_alloc_size);
1948 return result;
1949 }
1950
1951 static int vfswrap_unlink(vfs_handle_struct *handle,
1952 const struct smb_filename *smb_fname)
1953 {
1954 int result = -1;
1955
1956 START_PROFILE(syscall_unlink);
1957
1958 if (smb_fname->stream_name) {
1959 errno = ENOENT;
1960 goto out;
1961 }
1962 result = unlink(smb_fname->base_name);
1963
1964 out:
1965 END_PROFILE(syscall_unlink);
1966 return result;
1967 }
1968
1969 static int vfswrap_chmod(vfs_handle_struct *handle,
1970 const struct smb_filename *smb_fname,
1971 mode_t mode)
1972 {
1973 int result;
1974
1975 START_PROFILE(syscall_chmod);
1976 result = chmod(smb_fname->base_name, mode);
1977 END_PROFILE(syscall_chmod);
1978 return result;
1979 }
1980
1981 static int vfswrap_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
1982 {
1983 int result;
1984
1985 START_PROFILE(syscall_fchmod);
1986 #if defined(HAVE_FCHMOD)
1987 result = fchmod(fsp->fh->fd, mode);
1988 #else
1989 result = -1;
1990 errno = ENOSYS;
1991 #endif
1992
1993 END_PROFILE(syscall_fchmod);
1994 return result;
1995 }
1996
1997 static int vfswrap_chown(vfs_handle_struct *handle,
1998 const struct smb_filename *smb_fname,
1999 uid_t uid,
2000 gid_t gid)
2001 {
2002 int result;
2003
2004 START_PROFILE(syscall_chown);
2005 result = chown(smb_fname->base_name, uid, gid);
2006 END_PROFILE(syscall_chown);
2007 return result;
2008 }
2009
2010 static int vfswrap_fchown(vfs_handle_struct *handle, files_struct *fsp, uid_t uid, gid_t gid)
2011 {
2012 #ifdef HAVE_FCHOWN
2013 int result;
2014
2015 START_PROFILE(syscall_fchown);
2016 result = fchown(fsp->fh->fd, uid, gid);
2017 END_PROFILE(syscall_fchown);
2018 return result;
2019 #else
2020 errno = ENOSYS;
2021 return -1;
2022 #endif
2023 }
2024
2025 static int vfswrap_lchown(vfs_handle_struct *handle,
2026 const struct smb_filename *smb_fname,
2027 uid_t uid,
2028 gid_t gid)
2029 {
2030 int result;
2031
2032 START_PROFILE(syscall_lchown);
2033 result = lchown(smb_fname->base_name, uid, gid);
2034 END_PROFILE(syscall_lchown);
2035 return result;
2036 }
2037
2038 static int vfswrap_chdir(vfs_handle_struct *handle,
2039 const struct smb_filename *smb_fname)
2040 {
2041 int result;
2042
2043 START_PROFILE(syscall_chdir);
2044 result = chdir(smb_fname->base_name);
2045 END_PROFILE(syscall_chdir);
2046 return result;
2047 }
2048
2049 static struct smb_filename *vfswrap_getwd(vfs_handle_struct *handle,
2050 TALLOC_CTX *ctx)
2051 {
2052 char *result;
2053 struct smb_filename *smb_fname = NULL;
2054
2055 START_PROFILE(syscall_getwd);
2056 result = sys_getwd();
2057 END_PROFILE(syscall_getwd);
2058
2059 if (result == NULL) {
2060 return NULL;
2061 }
2062 smb_fname = synthetic_smb_fname(ctx,
2063 result,
2064 NULL,
2065 NULL,
2066 0);
2067 /*
2068 * sys_getwd() *always* returns malloced memory.
2069 * We must free here to avoid leaks:
2070 * BUG:https://bugzilla.samba.org/show_bug.cgi?id=13372
2071 */
2072 SAFE_FREE(result);
2073 return smb_fname;
2074 }
2075
2076 /*********************************************************************
2077 nsec timestamp resolution call. Convert down to whatever the underlying
2078 system will support.
2079 **********************************************************************/
2080
2081 static int vfswrap_ntimes(vfs_handle_struct *handle,
2082 const struct smb_filename *smb_fname,
2083 struct smb_file_time *ft)
2084 {
2085 int result = -1;
2086
2087 START_PROFILE(syscall_ntimes);
2088
2089 if (smb_fname->stream_name) {
2090 errno = ENOENT;
2091 goto out;
2092 }
2093
2094 if (ft != NULL) {
2095 if (null_timespec(ft->atime)) {
2096 ft->atime= smb_fname->st.st_ex_atime;
2097 }
2098
2099 if (null_timespec(ft->mtime)) {
2100 ft->mtime = smb_fname->st.st_ex_mtime;
2101 }
2102
2103 if (!null_timespec(ft->create_time)) {
2104 set_create_timespec_ea(handle->conn,
2105 smb_fname,
2106 ft->create_time);
2107 }
2108
2109 if ((timespec_compare(&ft->atime,
2110 &smb_fname->st.st_ex_atime) == 0) &&
2111 (timespec_compare(&ft->mtime,
2112 &smb_fname->st.st_ex_mtime) == 0)) {
2113 return 0;
2114 }
2115 }
2116
2117 #if defined(HAVE_UTIMENSAT)
2118 if (ft != NULL) {
2119 struct timespec ts[2];
2120 ts[0] = ft->atime;
2121 ts[1] = ft->mtime;
2122 result = utimensat(AT_FDCWD, smb_fname->base_name, ts, 0);
2123 } else {
2124 result = utimensat(AT_FDCWD, smb_fname->base_name, NULL, 0);
2125 }
2126 if (!((result == -1) && (errno == ENOSYS))) {
2127 goto out;
2128 }
2129 #endif
2130 #if defined(HAVE_UTIMES)
2131 if (ft != NULL) {
2132 struct timeval tv[2];
2133 tv[0] = convert_timespec_to_timeval(ft->atime);
2134 tv[1] = convert_timespec_to_timeval(ft->mtime);
2135 result = utimes(smb_fname->base_name, tv);
2136 } else {
2137 result = utimes(smb_fname->base_name, NULL);
2138 }
2139 if (!((result == -1) && (errno == ENOSYS))) {
2140 goto out;
2141 }
2142 #endif
2143 #if defined(HAVE_UTIME)
2144 if (ft != NULL) {
2145 struct utimbuf times;
2146 times.actime = convert_timespec_to_time_t(ft->atime);
2147 times.modtime = convert_timespec_to_time_t(ft->mtime);
2148 result = utime(smb_fname->base_name, &times);
2149 } else {
2150 result = utime(smb_fname->base_name, NULL);
2151 }
2152 if (!((result == -1) && (errno == ENOSYS))) {
2153 goto out;
2154 }
2155 #endif
2156 errno = ENOSYS;
2157 result = -1;
2158
2159 out:
2160 END_PROFILE(syscall_ntimes);
2161 return result;
2162 }
2163
2164 /*********************************************************************
2165 A version of ftruncate that will write the space on disk if strict
2166 allocate is set.
2167 **********************************************************************/
2168
2169 static int strict_allocate_ftruncate(vfs_handle_struct *handle, files_struct *fsp, off_t len)
2170 {
2171 off_t space_to_write;
2172 uint64_t space_avail;
2173 uint64_t bsize,dfree,dsize;
2174 int ret;
2175 NTSTATUS status;
2176 SMB_STRUCT_STAT *pst;
2177
2178 status = vfs_stat_fsp(fsp);
2179 if (!NT_STATUS_IS_OK(status)) {
2180 return -1;
2181 }
2182 pst = &fsp->fsp_name->st;
2183
2184 #ifdef S_ISFIFO
2185 if (S_ISFIFO(pst->st_ex_mode))
2186 return 0;
2187 #endif
2188
2189 if (pst->st_ex_size == len)
2190 return 0;
2191
2192 /* Shrink - just ftruncate. */
2193 if (pst->st_ex_size > len)
2194 return ftruncate(fsp->fh->fd, len);
2195
2196 space_to_write = len - pst->st_ex_size;
2197
2198 /* for allocation try fallocate first. This can fail on some
2199 platforms e.g. when the filesystem doesn't support it and no
2200 emulation is being done by the libc (like on AIX with JFS1). In that
2201 case we do our own emulation. fallocate implementations can
2202 return ENOTSUP or EINVAL in cases like that. */
2203 ret = SMB_VFS_FALLOCATE(fsp, 0, pst->st_ex_size, space_to_write);
2204 if (ret == -1 && errno == ENOSPC) {
2205 return -1;
2206 }
2207 if (ret == 0) {
2208 return 0;
2209 }
2210 DEBUG(10,("strict_allocate_ftruncate: SMB_VFS_FALLOCATE failed with "
2211 "error %d. Falling back to slow manual allocation\n", errno));
2212
2213 /* available disk space is enough or not? */
2214 space_avail =
2215 get_dfree_info(fsp->conn, fsp->fsp_name, &bsize, &dfree, &dsize);
2216 /* space_avail is 1k blocks */
2217 if (space_avail == (uint64_t)-1 ||
2218 ((uint64_t)space_to_write/1024 > space_avail) ) {
2219 errno = ENOSPC;
2220 return -1;
2221 }
2222
2223 /* Write out the real space on disk. */
2224 ret = vfs_slow_fallocate(fsp, pst->st_ex_size, space_to_write);
2225 if (ret != 0) {
2226 return -1;
2227 }
2228
2229 return 0;
2230 }
2231
2232 static int vfswrap_ftruncate(vfs_handle_struct *handle, files_struct *fsp, off_t len)
2233 {
2234 int result = -1;
2235 SMB_STRUCT_STAT *pst;
2236 NTSTATUS status;
2237 char c = 0;
2238
2239 START_PROFILE(syscall_ftruncate);
2240
2241 if (lp_strict_allocate(SNUM(fsp->conn)) && !fsp->is_sparse) {
2242 result = strict_allocate_ftruncate(handle, fsp, len);
2243 END_PROFILE(syscall_ftruncate);
2244 return result;
2245 }
2246
2247 /* we used to just check HAVE_FTRUNCATE_EXTEND and only use
2248 ftruncate if the system supports it. Then I discovered that
2249 you can have some filesystems that support ftruncate
2250 expansion and some that don't! On Linux fat can't do
2251 ftruncate extend but ext2 can. */
2252
2253 result = ftruncate(fsp->fh->fd, len);
2254
2255 /* According to W. R. Stevens advanced UNIX prog. Pure 4.3 BSD cannot
2256 extend a file with ftruncate. Provide alternate implementation
2257 for this */
2258
2259 /* Do an fstat to see if the file is longer than the requested
2260 size in which case the ftruncate above should have
2261 succeeded or shorter, in which case seek to len - 1 and
2262 write 1 byte of zero */
2263 status = vfs_stat_fsp(fsp);
2264 if (!NT_STATUS_IS_OK(status)) {
2265 goto done;
2266 }
2267
2268 /* We need to update the files_struct after successful ftruncate */
2269 if (result == 0) {
2270 goto done;
2271 }
2272
2273 pst = &fsp->fsp_name->st;
2274
2275 #ifdef S_ISFIFO
2276 if (S_ISFIFO(pst->st_ex_mode)) {
2277 result = 0;
2278 goto done;
2279 }
2280 #endif
2281
2282 if (pst->st_ex_size == len) {
2283 result = 0;
2284 goto done;
2285 }
2286
2287 if (pst->st_ex_size > len) {
2288 /* the ftruncate should have worked */
2289 goto done;
2290 }
2291
2292 if (SMB_VFS_PWRITE(fsp, &c, 1, len-1)!=1) {
2293 goto done;
2294 }
2295
2296 result = 0;
2297
2298 done:
2299
2300 END_PROFILE(syscall_ftruncate);
2301 return result;
2302 }
2303
2304 static int vfswrap_fallocate(vfs_handle_struct *handle,
2305 files_struct *fsp,
2306 uint32_t mode,
2307 off_t offset,
2308 off_t len)
2309 {
2310 int result;
2311
2312 START_PROFILE(syscall_fallocate);
2313 if (mode == 0) {
2314 result = sys_posix_fallocate(fsp->fh->fd, offset, len);
2315 /*
2316 * posix_fallocate returns 0 on success, errno on error
2317 * and doesn't set errno. Make it behave like fallocate()
2318 * which returns -1, and sets errno on failure.
2319 */
2320 if (result != 0) {
2321 errno = result;
2322 result = -1;
2323 }
2324 } else {
2325 /* sys_fallocate handles filtering of unsupported mode flags */
2326 result = sys_fallocate(fsp->fh->fd, mode, offset, len);
2327 }
2328 END_PROFILE(syscall_fallocate);
2329 return result;
2330 }
2331
2332 static bool vfswrap_lock(vfs_handle_struct *handle, files_struct *fsp, int op, off_t offset, off_t count, int type)
2333 {
2334 bool result;
2335
2336 START_PROFILE(syscall_fcntl_lock);
2337
2338 if (fsp->use_ofd_locks || !lp_parm_bool(SNUM(fsp->conn),
2339 "smbd",
2340 "force process locks",
2341 false)) {
2342 op = map_process_lock_to_ofd_lock(op, &fsp->use_ofd_locks);
2343 }
2344
2345 result = fcntl_lock(fsp->fh->fd, op, offset, count, type);
2346 END_PROFILE(syscall_fcntl_lock);
2347 return result;
2348 }
2349
2350 static int vfswrap_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
2351 uint32_t share_mode, uint32_t access_mask)
2352 {
2353 START_PROFILE(syscall_kernel_flock);
2354 kernel_flock(fsp->fh->fd, share_mode, access_mask);
2355 END_PROFILE(syscall_kernel_flock);
2356 return 0;
2357 }
2358
2359 static bool vfswrap_getlock(vfs_handle_struct *handle, files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid)
2360 {
2361 bool result;
2362 int op = F_GETLK;
2363
2364 START_PROFILE(syscall_fcntl_getlock);
2365
2366 if (fsp->use_ofd_locks || !lp_parm_bool(SNUM(fsp->conn),
2367 "smbd",
2368 "force process locks",
2369 false)) {
2370 op = map_process_lock_to_ofd_lock(op, &fsp->use_ofd_locks);
2371 }
2372
2373 result = fcntl_getlock(fsp->fh->fd, op, poffset, pcount, ptype, ppid);
2374 END_PROFILE(syscall_fcntl_getlock);
2375 return result;
2376 }
2377
2378 static int vfswrap_linux_setlease(vfs_handle_struct *handle, files_struct *fsp,
2379 int leasetype)
2380 {
2381 int result = -1;
2382
2383 START_PROFILE(syscall_linux_setlease);
2384
2385 #ifdef HAVE_KERNEL_OPLOCKS_LINUX
2386 result = linux_setlease(fsp->fh->fd, leasetype);
2387 #else
2388 errno = ENOSYS;
2389 #endif
2390 END_PROFILE(syscall_linux_setlease);
2391 return result;
2392 }
2393
2394 static int vfswrap_symlink(vfs_handle_struct *handle,
2395 const char *link_target,
2396 const struct smb_filename *new_smb_fname)
2397 {
2398 int result;
2399
2400 START_PROFILE(syscall_symlink);
2401 result = symlink(link_target, new_smb_fname->base_name);
2402 END_PROFILE(syscall_symlink);
2403 return result;
2404 }
2405
2406 static int vfswrap_readlink(vfs_handle_struct *handle,
2407 const struct smb_filename *smb_fname,
2408 char *buf,
2409 size_t bufsiz)
2410 {
2411 int result;
2412
2413 START_PROFILE(syscall_readlink);
2414 result = readlink(smb_fname->base_name, buf, bufsiz);
2415 END_PROFILE(syscall_readlink);
2416 return result;
2417 }
2418
2419 static int vfswrap_link(vfs_handle_struct *handle,
2420 const struct smb_filename *old_smb_fname,
2421 const struct smb_filename *new_smb_fname)
2422 {
2423 int result;
2424
2425 START_PROFILE(syscall_link);
2426 result = link(old_smb_fname->base_name, new_smb_fname->base_name);
2427 END_PROFILE(syscall_link);
2428 return result;
2429 }
2430
2431 static int vfswrap_mknod(vfs_handle_struct *handle,
2432 const struct smb_filename *smb_fname,
2433 mode_t mode,
2434 SMB_DEV_T dev)
2435 {
2436 int result;
2437
2438 START_PROFILE(syscall_mknod);
2439 result = sys_mknod(smb_fname->base_name, mode, dev);
2440 END_PROFILE(syscall_mknod);
2441 return result;
2442 }
2443
2444 static struct smb_filename *vfswrap_realpath(vfs_handle_struct *handle,
2445 TALLOC_CTX *ctx,
2446 const struct smb_filename *smb_fname)
2447 {
2448 char *result;
2449 struct smb_filename *result_fname = NULL;
2450
2451 START_PROFILE(syscall_realpath);
2452 result = sys_realpath(smb_fname->base_name);
2453 END_PROFILE(syscall_realpath);
2454 if (result) {
2455 result_fname = synthetic_smb_fname(ctx, result, NULL, NULL, 0);
2456 SAFE_FREE(result);
2457 }
2458 return result_fname;
2459 }
2460
2461 static int vfswrap_chflags(vfs_handle_struct *handle,
2462 const struct smb_filename *smb_fname,
2463 unsigned int flags)
2464 {
2465 #ifdef HAVE_CHFLAGS
2466 return chflags(smb_fname->base_name, flags);
2467 #else
2468 errno = ENOSYS;
2469 return -1;
2470 #endif
2471 }
2472
2473 static struct file_id vfswrap_file_id_create(struct vfs_handle_struct *handle,
2474 const SMB_STRUCT_STAT *sbuf)
2475 {
2476 struct file_id key;
2477
2478 /* the ZERO_STRUCT ensures padding doesn't break using the key as a
2479 * blob */
2480 ZERO_STRUCT(key);
2481
2482 key.devid = sbuf->st_ex_dev;
2483 key.inode = sbuf->st_ex_ino;
2484 /* key.extid is unused by default. */
2485
2486 return key;
2487 }
2488
2489 static NTSTATUS vfswrap_streaminfo(vfs_handle_struct *handle,
2490 struct files_struct *fsp,
2491 const struct smb_filename *smb_fname,
2492 TALLOC_CTX *mem_ctx,
2493 unsigned int *pnum_streams,
2494 struct stream_struct **pstreams)
2495 {
2496 SMB_STRUCT_STAT sbuf;
2497 struct stream_struct *tmp_streams = NULL;
2498 int ret;
2499
2500 if ((fsp != NULL) && (fsp->is_directory)) {
2501 /*
2502 * No default streams on directories
2503 */
2504 goto done;
2505 }
2506
2507 if ((fsp != NULL) && (fsp->fh->fd != -1)) {
2508 ret = SMB_VFS_FSTAT(fsp, &sbuf);
2509 }
2510 else {
2511 struct smb_filename smb_fname_cp;
2512
2513 ZERO_STRUCT(smb_fname_cp);
2514 smb_fname_cp.base_name = discard_const_p(char,
2515 smb_fname->base_name);
2516 smb_fname_cp.flags = smb_fname->flags;
2517
2518 if (smb_fname_cp.flags & SMB_FILENAME_POSIX_PATH) {
2519 ret = SMB_VFS_LSTAT(handle->conn, &smb_fname_cp);
2520 } else {
2521 ret = SMB_VFS_STAT(handle->conn, &smb_fname_cp);
2522 }
2523 sbuf = smb_fname_cp.st;
2524 }
2525
2526 if (ret == -1) {
2527 return map_nt_error_from_unix(errno);
2528 }
2529
2530 if (S_ISDIR(sbuf.st_ex_mode)) {
2531 goto done;
2532 }
2533
2534 tmp_streams = talloc_realloc(mem_ctx, *pstreams, struct stream_struct,
2535 (*pnum_streams) + 1);
2536 if (tmp_streams == NULL) {
2537 return NT_STATUS_NO_MEMORY;
2538 }
2539 tmp_streams[*pnum_streams].name = talloc_strdup(tmp_streams, "::$DATA");
2540 if (tmp_streams[*pnum_streams].name == NULL) {
2541 return NT_STATUS_NO_MEMORY;
2542 }
2543 tmp_streams[*pnum_streams].size = sbuf.st_ex_size;
2544 tmp_streams[*pnum_streams].alloc_size = SMB_VFS_GET_ALLOC_SIZE(handle->conn, fsp, &sbuf);
2545
2546 *pnum_streams += 1;
2547 *pstreams = tmp_streams;
2548 done:
2549 return NT_STATUS_OK;
2550 }
2551
2552 static int vfswrap_get_real_filename(struct vfs_handle_struct *handle,
2553 const char *path,
2554 const char *name,
2555 TALLOC_CTX *mem_ctx,
2556 char **found_name)
2557 {
2558 /*
2559 * Don't fall back to get_real_filename so callers can differentiate
2560 * between a full directory scan and an actual case-insensitive stat.
2561 */
2562 errno = EOPNOTSUPP;
2563 return -1;
2564 }
2565
2566 static const char *vfswrap_connectpath(struct vfs_handle_struct *handle,
2567 const struct smb_filename *smb_fname)
2568 {
2569 return handle->conn->connectpath;
2570 }
2571
2572 static NTSTATUS vfswrap_brl_lock_windows(struct vfs_handle_struct *handle,
2573 struct byte_range_lock *br_lck,
2574 struct lock_struct *plock,
2575 bool blocking_lock)
2576 {
2577 SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2578
2579 /* Note: blr is not used in the default implementation. */
2580 return brl_lock_windows_default(br_lck, plock, blocking_lock);
2581 }
2582
2583 static bool vfswrap_brl_unlock_windows(struct vfs_handle_struct *handle,
2584 struct messaging_context *msg_ctx,
2585 struct byte_range_lock *br_lck,
2586 const struct lock_struct *plock)
2587 {
2588 SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2589
2590 return brl_unlock_windows_default(msg_ctx, br_lck, plock);
2591 }
2592
2593 static bool vfswrap_brl_cancel_windows(struct vfs_handle_struct *handle,
2594 struct byte_range_lock *br_lck,
2595 struct lock_struct *plock)
2596 {
2597 SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2598
2599 /* Note: blr is not used in the default implementation. */
2600 return brl_lock_cancel_default(br_lck, plock);
2601 }
2602
2603 static bool vfswrap_strict_lock_check(struct vfs_handle_struct *handle,
2604 files_struct *fsp,
2605 struct lock_struct *plock)
2606 {
2607 SMB_ASSERT(plock->lock_type == READ_LOCK ||
2608 plock->lock_type == WRITE_LOCK);
2609
2610 return strict_lock_check_default(fsp, plock);
2611 }
2612
2613 /* NT ACL operations. */
2614
2615 static NTSTATUS vfswrap_fget_nt_acl(vfs_handle_struct *handle,
2616 files_struct *fsp,
2617 uint32_t security_info,
2618 TALLOC_CTX *mem_ctx,
2619 struct security_descriptor **ppdesc)
2620 {
2621 NTSTATUS result;
2622
2623 START_PROFILE(fget_nt_acl);
2624 result = posix_fget_nt_acl(fsp, security_info,
2625 mem_ctx, ppdesc);
2626 END_PROFILE(fget_nt_acl);
2627 return result;
2628 }
2629
2630 static NTSTATUS vfswrap_get_nt_acl(vfs_handle_struct *handle,
2631 const struct smb_filename *smb_fname,
2632 uint32_t security_info,
2633 TALLOC_CTX *mem_ctx,
2634 struct security_descriptor **ppdesc)
2635 {
2636 NTSTATUS result;
2637
2638 START_PROFILE(get_nt_acl);
2639 result = posix_get_nt_acl(handle->conn,
2640 smb_fname,
2641 security_info,
2642 mem_ctx,
2643 ppdesc);
2644 END_PROFILE(get_nt_acl);
2645 return result;
2646 }
2647
2648 static NTSTATUS vfswrap_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32_t security_info_sent, const struct security_descriptor *psd)
2649 {
2650 NTSTATUS result;
2651
2652 START_PROFILE(fset_nt_acl);
2653 result = set_nt_acl(fsp, security_info_sent, psd);
2654 END_PROFILE(fset_nt_acl);
2655 return result;
2656 }
2657
2658 static NTSTATUS vfswrap_audit_file(struct vfs_handle_struct *handle,
2659 struct smb_filename *file,
2660 struct security_acl *sacl,
2661 uint32_t access_requested,
2662 uint32_t access_denied)
2663 {
2664 return NT_STATUS_OK; /* Nothing to do here ... */
2665 }
2666
2667 static SMB_ACL_T vfswrap_sys_acl_get_file(vfs_handle_struct *handle,
2668 const struct smb_filename *smb_fname,
2669 SMB_ACL_TYPE_T type,
2670 TALLOC_CTX *mem_ctx)
2671 {
2672 return sys_acl_get_file(handle, smb_fname, type, mem_ctx);
2673 }
2674
2675 static SMB_ACL_T vfswrap_sys_acl_get_fd(vfs_handle_struct *handle,
2676 files_struct *fsp,
2677 TALLOC_CTX *mem_ctx)
2678 {
2679 return sys_acl_get_fd(handle, fsp, mem_ctx);
2680 }
2681
2682 static int vfswrap_sys_acl_set_file(vfs_handle_struct *handle,
2683 const struct smb_filename *smb_fname,
2684 SMB_ACL_TYPE_T acltype,
2685 SMB_ACL_T theacl)
2686 {
2687 return sys_acl_set_file(handle, smb_fname, acltype, theacl);
2688 }
2689
2690 static int vfswrap_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp, SMB_ACL_T theacl)
2691 {
2692 return sys_acl_set_fd(handle, fsp, theacl);
2693 }
2694
2695 static int vfswrap_sys_acl_delete_def_file(vfs_handle_struct *handle,
2696 const struct smb_filename *smb_fname)
2697 {
2698 return sys_acl_delete_def_file(handle, smb_fname);
2699 }
2700
2701 /****************************************************************
2702 Extended attribute operations.
2703 *****************************************************************/
2704
2705 static ssize_t vfswrap_getxattr(struct vfs_handle_struct *handle,
2706 const struct smb_filename *smb_fname,
2707 const char *name,
2708 void *value,
2709 size_t size)
2710 {
2711 return getxattr(smb_fname->base_name, name, value, size);
2712 }
2713
2714 static ssize_t vfswrap_fgetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size)
2715 {
2716 return fgetxattr(fsp->fh->fd, name, value, size);
2717 }
2718
2719 static ssize_t vfswrap_listxattr(struct vfs_handle_struct *handle,
2720 const struct smb_filename *smb_fname,
2721 char *list,
2722 size_t size)
2723 {
2724 return listxattr(smb_fname->base_name, list, size);
2725 }
2726
2727 static ssize_t vfswrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size)
2728 {
2729 return flistxattr(fsp->fh->fd, list, size);
2730 }
2731
2732 static int vfswrap_removexattr(struct vfs_handle_struct *handle,
2733 const struct smb_filename *smb_fname,
2734 const char *name)
2735 {
2736 return removexattr(smb_fname->base_name, name);
2737 }
2738
2739 static int vfswrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name)
2740 {
2741 return fremovexattr(fsp->fh->fd, name);
2742 }
2743
2744 static int vfswrap_setxattr(struct vfs_handle_struct *handle,
2745 const struct smb_filename *smb_fname,
2746 const char *name,
2747 const void *value,
2748 size_t size,
2749 int flags)
2750 {
2751 return setxattr(smb_fname->base_name, name, value, size, flags);
2752 }
2753
2754 static int vfswrap_fsetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags)
2755 {
2756 return fsetxattr(fsp->fh->fd, name, value, size, flags);
2757 }
2758
2759 static bool vfswrap_aio_force(struct vfs_handle_struct *handle, struct files_struct *fsp)
2760 {
2761 return false;
2762 }
2763
2764 static bool vfswrap_is_offline(struct vfs_handle_struct *handle,
2765 const struct smb_filename *fname,
2766 SMB_STRUCT_STAT *sbuf)
2767 {
2768 NTSTATUS status;
2769 char *path;
2770 bool offline = false;
2771
2772 if (ISDOT(fname->base_name) || ISDOTDOT(fname->base_name)) {
2773 return false;
2774 }
2775
2776 if (!lp_dmapi_support(SNUM(handle->conn)) || !dmapi_have_session()) {
2777 #if defined(ENOTSUP)
2778 errno = ENOTSUP;
2779 #endif
2780 return false;
2781 }
2782
2783 status = get_full_smb_filename(talloc_tos(), fname, &path);
2784 if (!NT_STATUS_IS_OK(status)) {
2785 errno = map_errno_from_nt_status(status);
2786 return false;
2787 }
2788
2789 offline = (dmapi_file_flags(path) & FILE_ATTRIBUTE_OFFLINE) != 0;
2790
2791 TALLOC_FREE(path);
2792
2793 return offline;
2794 }
2795
2796 static NTSTATUS vfswrap_durable_cookie(struct vfs_handle_struct *handle,
2797 struct files_struct *fsp,
2798 TALLOC_CTX *mem_ctx,
2799 DATA_BLOB *cookie)
2800 {
2801 return vfs_default_durable_cookie(fsp, mem_ctx, cookie);
2802 }
2803
2804 static NTSTATUS vfswrap_durable_disconnect(struct vfs_handle_struct *handle,
2805 struct files_struct *fsp,
2806 const DATA_BLOB old_cookie,
2807 TALLOC_CTX *mem_ctx,
2808 DATA_BLOB *new_cookie)
2809 {
2810 return vfs_default_durable_disconnect(fsp, old_cookie, mem_ctx,
2811 new_cookie);
2812 }
2813
2814 static NTSTATUS vfswrap_durable_reconnect(struct vfs_handle_struct *handle,
2815 struct smb_request *smb1req,
2816 struct smbXsrv_open *op,
2817 const DATA_BLOB old_cookie,
2818 TALLOC_CTX *mem_ctx,
2819 struct files_struct **fsp,
2820 DATA_BLOB *new_cookie)
2821 {
2822 return vfs_default_durable_reconnect(handle->conn, smb1req, op,
2823 old_cookie, mem_ctx,
2824 fsp, new_cookie);
2825 }
2826
2827 static struct vfs_fn_pointers vfs_default_fns = {
2828 /* Disk operations */
2829
2830 .connect_fn = vfswrap_connect,
2831 .disconnect_fn = vfswrap_disconnect,
2832 .disk_free_fn = vfswrap_disk_free,
2833 .get_quota_fn = vfswrap_get_quota,
2834 .set_quota_fn = vfswrap_set_quota,
2835 .get_shadow_copy_data_fn = vfswrap_get_shadow_copy_data,
2836 .statvfs_fn = vfswrap_statvfs,
2837 .fs_capabilities_fn = vfswrap_fs_capabilities,
2838 .get_dfs_referrals_fn = vfswrap_get_dfs_referrals,
2839 .snap_check_path_fn = vfswrap_snap_check_path,
2840 .snap_create_fn = vfswrap_snap_create,
2841 .snap_delete_fn = vfswrap_snap_delete,
2842
2843 /* Directory operations */
2844
2845 .opendir_fn = vfswrap_opendir,
2846 .fdopendir_fn = vfswrap_fdopendir,
2847 .readdir_fn = vfswrap_readdir,
2848 .readdir_attr_fn = vfswrap_readdir_attr,
2849 .seekdir_fn = vfswrap_seekdir,
2850 .telldir_fn = vfswrap_telldir,
2851 .rewind_dir_fn = vfswrap_rewinddir,
2852 .mkdir_fn = vfswrap_mkdir,
2853 .rmdir_fn = vfswrap_rmdir,
2854 .closedir_fn = vfswrap_closedir,
2855
2856 /* File operations */
2857
2858 .open_fn = vfswrap_open,
2859 .create_file_fn = vfswrap_create_file,
2860 .close_fn = vfswrap_close,
2861 .pread_fn = vfswrap_pread,
2862 .pread_send_fn = vfswrap_pread_send,
2863 .pread_recv_fn = vfswrap_pread_recv,
2864 .pwrite_fn = vfswrap_pwrite,
2865 .pwrite_send_fn = vfswrap_pwrite_send,
2866 .pwrite_recv_fn = vfswrap_pwrite_recv,
2867 .lseek_fn = vfswrap_lseek,
2868 .sendfile_fn = vfswrap_sendfile,
2869 .recvfile_fn = vfswrap_recvfile,
2870 .rename_fn = vfswrap_rename,
2871 .fsync_send_fn = vfswrap_fsync_send,
2872 .fsync_recv_fn = vfswrap_fsync_recv,
2873 .stat_fn = vfswrap_stat,
2874 .fstat_fn = vfswrap_fstat,
2875 .lstat_fn = vfswrap_lstat,
2876 .get_alloc_size_fn = vfswrap_get_alloc_size,
2877 .unlink_fn = vfswrap_unlink,
2878 .chmod_fn = vfswrap_chmod,
2879 .fchmod_fn = vfswrap_fchmod,
2880 .chown_fn = vfswrap_chown,
2881 .fchown_fn = vfswrap_fchown,
2882 .lchown_fn = vfswrap_lchown,
2883 .chdir_fn = vfswrap_chdir,
2884 .getwd_fn = vfswrap_getwd,
2885 .ntimes_fn = vfswrap_ntimes,
2886 .ftruncate_fn = vfswrap_ftruncate,
2887 .fallocate_fn = vfswrap_fallocate,
2888 .lock_fn = vfswrap_lock,
2889 .kernel_flock_fn = vfswrap_kernel_flock,
2890 .linux_setlease_fn = vfswrap_linux_setlease,
2891 .getlock_fn = vfswrap_getlock,
2892 .symlink_fn = vfswrap_symlink,
2893 .readlink_fn = vfswrap_readlink,
2894 .link_fn = vfswrap_link,
2895 .mknod_fn = vfswrap_mknod,
2896 .realpath_fn = vfswrap_realpath,
2897 .chflags_fn = vfswrap_chflags,
2898 .file_id_create_fn = vfswrap_file_id_create,
2899 .streaminfo_fn = vfswrap_streaminfo,
2900 .get_real_filename_fn = vfswrap_get_real_filename,
2901 .connectpath_fn = vfswrap_connectpath,
2902 .brl_lock_windows_fn = vfswrap_brl_lock_windows,
2903 .brl_unlock_windows_fn = vfswrap_brl_unlock_windows,
2904 .brl_cancel_windows_fn = vfswrap_brl_cancel_windows,
2905 .strict_lock_check_fn = vfswrap_strict_lock_check,
2906 .translate_name_fn = vfswrap_translate_name,
2907 .fsctl_fn = vfswrap_fsctl,
2908 .set_dos_attributes_fn = vfswrap_set_dos_attributes,
2909 .fset_dos_attributes_fn = vfswrap_fset_dos_attributes,
2910 .get_dos_attributes_fn = vfswrap_get_dos_attributes,
2911 .fget_dos_attributes_fn = vfswrap_fget_dos_attributes,
2912 .offload_read_send_fn = vfswrap_offload_read_send,
2913 .offload_read_recv_fn = vfswrap_offload_read_recv,
2914 .offload_write_send_fn = vfswrap_offload_write_send,
2915 .offload_write_recv_fn = vfswrap_offload_write_recv,
2916 .get_compression_fn = vfswrap_get_compression,
2917 .set_compression_fn = vfswrap_set_compression,
2918
2919 /* NT ACL operations. */
2920
2921 .fget_nt_acl_fn = vfswrap_fget_nt_acl,
2922 .get_nt_acl_fn = vfswrap_get_nt_acl,
2923 .fset_nt_acl_fn = vfswrap_fset_nt_acl,
2924 .audit_file_fn = vfswrap_audit_file,
2925
2926 /* POSIX ACL operations. */
2927
2928 .sys_acl_get_file_fn = vfswrap_sys_acl_get_file,
2929 .sys_acl_get_fd_fn = vfswrap_sys_acl_get_fd,
2930 .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
2931 .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
2932 .sys_acl_set_file_fn = vfswrap_sys_acl_set_file,
2933 .sys_acl_set_fd_fn = vfswrap_sys_acl_set_fd,
2934 .sys_acl_delete_def_file_fn = vfswrap_sys_acl_delete_def_file,
2935
2936 /* EA operations. */
2937 .getxattr_fn = vfswrap_getxattr,
2938 .fgetxattr_fn = vfswrap_fgetxattr,
2939 .listxattr_fn = vfswrap_listxattr,
2940 .flistxattr_fn = vfswrap_flistxattr,
2941 .removexattr_fn = vfswrap_removexattr,
2942 .fremovexattr_fn = vfswrap_fremovexattr,
2943 .setxattr_fn = vfswrap_setxattr,
2944 .fsetxattr_fn = vfswrap_fsetxattr,
2945
2946 /* aio operations */
2947 .aio_force_fn = vfswrap_aio_force,
2948
2949 /* durable handle operations */
2950 .durable_cookie_fn = vfswrap_durable_cookie,
2951 .durable_disconnect_fn = vfswrap_durable_disconnect,
2952 .durable_reconnect_fn = vfswrap_durable_reconnect,
2953 };
2954
2955 static_decl_vfs;
2956 NTSTATUS vfs_default_init(TALLOC_CTX *ctx)
2957 {
2958 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
2959 DEFAULT_VFS_MODULE_NAME, &vfs_default_fns);
2960 }
2961
2962
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