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debug: Set close-on-exec for the main log file FD
[Samba.git] / source3 / modules / vfs_default.c
blob23c1cc2a00cb42ed384337829f44103801f287e7
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 #include "lib/util/tevent_ntstatus.h"
35
36 #undef DBGC_CLASS
37 #define DBGC_CLASS DBGC_VFS
38
39 /* Check for NULL pointer parameters in vfswrap_* functions */
40
41 /* We don't want to have NULL function pointers lying around. Someone
42 is sure to try and execute them. These stubs are used to prevent
43 this possibility. */
44
45 static int vfswrap_connect(vfs_handle_struct *handle, const char *service, const char *user)
46 {
47 return 0; /* Return >= 0 for success */
48 }
49
50 static void vfswrap_disconnect(vfs_handle_struct *handle)
51 {
52 }
53
54 /* Disk operations */
55
56 static uint64_t vfswrap_disk_free(vfs_handle_struct *handle, const char *path, bool small_query, uint64_t *bsize,
57 uint64_t *dfree, uint64_t *dsize)
58 {
59 uint64_t result;
60
61 result = sys_disk_free(handle->conn, path, small_query, bsize, dfree, dsize);
62 return result;
63 }
64
65 static int vfswrap_get_quota(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
66 {
67 #ifdef HAVE_SYS_QUOTAS
68 int result;
69
70 START_PROFILE(syscall_get_quota);
71 result = sys_get_quota(handle->conn->connectpath, qtype, id, qt);
72 END_PROFILE(syscall_get_quota);
73 return result;
74 #else
75 errno = ENOSYS;
76 return -1;
77 #endif
78 }
79
80 static int vfswrap_set_quota(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
81 {
82 #ifdef HAVE_SYS_QUOTAS
83 int result;
84
85 START_PROFILE(syscall_set_quota);
86 result = sys_set_quota(handle->conn->connectpath, qtype, id, qt);
87 END_PROFILE(syscall_set_quota);
88 return result;
89 #else
90 errno = ENOSYS;
91 return -1;
92 #endif
93 }
94
95 static int vfswrap_get_shadow_copy_data(struct vfs_handle_struct *handle,
96 struct files_struct *fsp,
97 struct shadow_copy_data *shadow_copy_data,
98 bool labels)
99 {
100 errno = ENOSYS;
101 return -1; /* Not implemented. */
102 }
103
104 static int vfswrap_statvfs(struct vfs_handle_struct *handle, const char *path, vfs_statvfs_struct *statbuf)
105 {
106 return sys_statvfs(path, statbuf);
107 }
108
109 static uint32_t vfswrap_fs_capabilities(struct vfs_handle_struct *handle,
110 enum timestamp_set_resolution *p_ts_res)
111 {
112 connection_struct *conn = handle->conn;
113 uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
114 struct smb_filename *smb_fname_cpath = NULL;
115 struct vfs_statvfs_struct statbuf;
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 smb_fname_cpath = synthetic_smb_fname(talloc_tos(), conn->connectpath,
130 NULL, NULL);
131 if (smb_fname_cpath == NULL) {
132 return caps;
133 }
134
135 ret = SMB_VFS_STAT(conn, smb_fname_cpath);
136 if (ret == -1) {
137 TALLOC_FREE(smb_fname_cpath);
138 return caps;
139 }
140
141 if (smb_fname_cpath->st.st_ex_mtime.tv_nsec ||
142 smb_fname_cpath->st.st_ex_atime.tv_nsec ||
143 smb_fname_cpath->st.st_ex_ctime.tv_nsec) {
144 /* If any of the normal UNIX directory timestamps
145 * have a non-zero tv_nsec component assume
146 * we might be able to set sub-second timestamps.
147 * See what filetime set primitives we have.
148 */
149 #if defined(HAVE_UTIMENSAT)
150 *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
151 #elif defined(HAVE_UTIMES)
152 /* utimes allows msec timestamps to be set. */
153 *p_ts_res = TIMESTAMP_SET_MSEC;
154 #elif defined(HAVE_UTIME)
155 /* utime only allows sec timestamps to be set. */
156 *p_ts_res = TIMESTAMP_SET_SECONDS;
157 #endif
158
159 DEBUG(10,("vfswrap_fs_capabilities: timestamp "
160 "resolution of %s "
161 "available on share %s, directory %s\n",
162 *p_ts_res == TIMESTAMP_SET_MSEC ? "msec" : "sec",
163 lp_servicename(talloc_tos(), conn->params->service),
164 conn->connectpath ));
165 }
166 TALLOC_FREE(smb_fname_cpath);
167 return caps;
168 }
169
170 static NTSTATUS vfswrap_get_dfs_referrals(struct vfs_handle_struct *handle,
171 struct dfs_GetDFSReferral *r)
172 {
173 struct junction_map *junction = NULL;
174 int consumedcnt = 0;
175 bool self_referral = false;
176 char *pathnamep = NULL;
177 char *local_dfs_path = NULL;
178 NTSTATUS status;
179 int i;
180 uint16_t max_referral_level = r->in.req.max_referral_level;
181
182 if (DEBUGLVL(10)) {
183 NDR_PRINT_IN_DEBUG(dfs_GetDFSReferral, r);
184 }
185
186 /* get the junction entry */
187 if (r->in.req.servername == NULL) {
188 return NT_STATUS_NOT_FOUND;
189 }
190
191 /*
192 * Trim pathname sent by client so it begins with only one backslash.
193 * Two backslashes confuse some dfs clients
194 */
195
196 local_dfs_path = talloc_strdup(r, r->in.req.servername);
197 if (local_dfs_path == NULL) {
198 return NT_STATUS_NO_MEMORY;
199 }
200 pathnamep = local_dfs_path;
201 while (IS_DIRECTORY_SEP(pathnamep[0]) &&
202 IS_DIRECTORY_SEP(pathnamep[1])) {
203 pathnamep++;
204 }
205
206 junction = talloc_zero(r, struct junction_map);
207 if (junction == NULL) {
208 return NT_STATUS_NO_MEMORY;
209 }
210
211 /* The following call can change cwd. */
212 status = get_referred_path(r, pathnamep,
213 !handle->conn->sconn->using_smb2,
214 junction, &consumedcnt, &self_referral);
215 if (!NT_STATUS_IS_OK(status)) {
216 vfs_ChDir(handle->conn, handle->conn->connectpath);
217 return status;
218 }
219 vfs_ChDir(handle->conn, handle->conn->connectpath);
220
221 if (!self_referral) {
222 pathnamep[consumedcnt] = '\0';
223
224 if (DEBUGLVL(3)) {
225 dbgtext("setup_dfs_referral: Path %s to "
226 "alternate path(s):",
227 pathnamep);
228 for (i=0; i < junction->referral_count; i++) {
229 dbgtext(" %s",
230 junction->referral_list[i].alternate_path);
231 }
232 dbgtext(".\n");
233 }
234 }
235
236 if (r->in.req.max_referral_level <= 2) {
237 max_referral_level = 2;
238 }
239 if (r->in.req.max_referral_level >= 3) {
240 max_referral_level = 3;
241 }
242
243 r->out.resp = talloc_zero(r, struct dfs_referral_resp);
244 if (r->out.resp == NULL) {
245 return NT_STATUS_NO_MEMORY;
246 }
247
248 r->out.resp->path_consumed = strlen_m(pathnamep) * 2;
249 r->out.resp->nb_referrals = junction->referral_count;
250
251 r->out.resp->header_flags = DFS_HEADER_FLAG_STORAGE_SVR;
252 if (self_referral) {
253 r->out.resp->header_flags |= DFS_HEADER_FLAG_REFERAL_SVR;
254 }
255
256 r->out.resp->referral_entries = talloc_zero_array(r,
257 struct dfs_referral_type,
258 r->out.resp->nb_referrals);
259 if (r->out.resp->referral_entries == NULL) {
260 return NT_STATUS_NO_MEMORY;
261 }
262
263 switch (max_referral_level) {
264 case 2:
265 for(i=0; i < junction->referral_count; i++) {
266 struct referral *ref = &junction->referral_list[i];
267 TALLOC_CTX *mem_ctx = r->out.resp->referral_entries;
268 struct dfs_referral_type *t =
269 &r->out.resp->referral_entries[i];
270 struct dfs_referral_v2 *v2 = &t->referral.v2;
271
272 t->version = 2;
273 v2->size = VERSION2_REFERRAL_SIZE;
274 if (self_referral) {
275 v2->server_type = DFS_SERVER_ROOT;
276 } else {
277 v2->server_type = DFS_SERVER_NON_ROOT;
278 }
279 v2->entry_flags = 0;
280 v2->proximity = ref->proximity;
281 v2->ttl = ref->ttl;
282 v2->DFS_path = talloc_strdup(mem_ctx, pathnamep);
283 if (v2->DFS_path == NULL) {
284 return NT_STATUS_NO_MEMORY;
285 }
286 v2->DFS_alt_path = talloc_strdup(mem_ctx, pathnamep);
287 if (v2->DFS_alt_path == NULL) {
288 return NT_STATUS_NO_MEMORY;
289 }
290 v2->netw_address = talloc_strdup(mem_ctx,
291 ref->alternate_path);
292 if (v2->netw_address == NULL) {
293 return NT_STATUS_NO_MEMORY;
294 }
295 }
296
297 break;
298 case 3:
299 for(i=0; i < junction->referral_count; i++) {
300 struct referral *ref = &junction->referral_list[i];
301 TALLOC_CTX *mem_ctx = r->out.resp->referral_entries;
302 struct dfs_referral_type *t =
303 &r->out.resp->referral_entries[i];
304 struct dfs_referral_v3 *v3 = &t->referral.v3;
305 struct dfs_normal_referral *r1 = &v3->referrals.r1;
306
307 t->version = 3;
308 v3->size = VERSION3_REFERRAL_SIZE;
309 if (self_referral) {
310 v3->server_type = DFS_SERVER_ROOT;
311 } else {
312 v3->server_type = DFS_SERVER_NON_ROOT;
313 }
314 v3->entry_flags = 0;
315 v3->ttl = ref->ttl;
316 r1->DFS_path = talloc_strdup(mem_ctx, pathnamep);
317 if (r1->DFS_path == NULL) {
318 return NT_STATUS_NO_MEMORY;
319 }
320 r1->DFS_alt_path = talloc_strdup(mem_ctx, pathnamep);
321 if (r1->DFS_alt_path == NULL) {
322 return NT_STATUS_NO_MEMORY;
323 }
324 r1->netw_address = talloc_strdup(mem_ctx,
325 ref->alternate_path);
326 if (r1->netw_address == NULL) {
327 return NT_STATUS_NO_MEMORY;
328 }
329 }
330 break;
331 default:
332 DEBUG(0,("setup_dfs_referral: Invalid dfs referral "
333 "version: %d\n",
334 max_referral_level));
335 return NT_STATUS_INVALID_LEVEL;
336 }
337
338 if (DEBUGLVL(10)) {
339 NDR_PRINT_OUT_DEBUG(dfs_GetDFSReferral, r);
340 }
341
342 return NT_STATUS_OK;
343 }
344
345 /* Directory operations */
346
347 static DIR *vfswrap_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
348 {
349 DIR *result;
350
351 START_PROFILE(syscall_opendir);
352 result = opendir(fname);
353 END_PROFILE(syscall_opendir);
354 return result;
355 }
356
357 static DIR *vfswrap_fdopendir(vfs_handle_struct *handle,
358 files_struct *fsp,
359 const char *mask,
360 uint32 attr)
361 {
362 DIR *result;
363
364 START_PROFILE(syscall_fdopendir);
365 result = sys_fdopendir(fsp->fh->fd);
366 END_PROFILE(syscall_fdopendir);
367 return result;
368 }
369
370
371 static struct dirent *vfswrap_readdir(vfs_handle_struct *handle,
372 DIR *dirp,
373 SMB_STRUCT_STAT *sbuf)
374 {
375 struct dirent *result;
376
377 START_PROFILE(syscall_readdir);
378 result = readdir(dirp);
379 END_PROFILE(syscall_readdir);
380 if (sbuf) {
381 /* Default Posix readdir() does not give us stat info.
382 * Set to invalid to indicate we didn't return this info. */
383 SET_STAT_INVALID(*sbuf);
384 #if defined(HAVE_DIRFD) && defined(HAVE_FSTATAT)
385 if (result != NULL) {
386 /* See if we can efficiently return this. */
387 struct stat st;
388 int flags = (lp_posix_pathnames() ?
389 AT_SYMLINK_NOFOLLOW : 0);
390 int ret = fstatat(dirfd(dirp),
391 result->d_name,
392 &st,
393 flags);
394 if (ret == 0) {
395 init_stat_ex_from_stat(sbuf,
396 &st,
397 lp_fake_dir_create_times(
398 SNUM(handle->conn)));
399 }
400 }
401 #endif
402 }
403 return result;
404 }
405
406 static void vfswrap_seekdir(vfs_handle_struct *handle, DIR *dirp, long offset)
407 {
408 START_PROFILE(syscall_seekdir);
409 seekdir(dirp, offset);
410 END_PROFILE(syscall_seekdir);
411 }
412
413 static long vfswrap_telldir(vfs_handle_struct *handle, DIR *dirp)
414 {
415 long result;
416 START_PROFILE(syscall_telldir);
417 result = telldir(dirp);
418 END_PROFILE(syscall_telldir);
419 return result;
420 }
421
422 static void vfswrap_rewinddir(vfs_handle_struct *handle, DIR *dirp)
423 {
424 START_PROFILE(syscall_rewinddir);
425 rewinddir(dirp);
426 END_PROFILE(syscall_rewinddir);
427 }
428
429 static int vfswrap_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode)
430 {
431 int result;
432 bool has_dacl = False;
433 char *parent = NULL;
434
435 START_PROFILE(syscall_mkdir);
436
437 if (lp_inherit_acls(SNUM(handle->conn))
438 && parent_dirname(talloc_tos(), path, &parent, NULL)
439 && (has_dacl = directory_has_default_acl(handle->conn, parent)))
440 mode = (0777 & lp_dir_mask(SNUM(handle->conn)));
441
442 TALLOC_FREE(parent);
443
444 result = mkdir(path, mode);
445
446 if (result == 0 && !has_dacl) {
447 /*
448 * We need to do this as the default behavior of POSIX ACLs
449 * is to set the mask to be the requested group permission
450 * bits, not the group permission bits to be the requested
451 * group permission bits. This is not what we want, as it will
452 * mess up any inherited ACL bits that were set. JRA.
453 */
454 int saved_errno = errno; /* We may get ENOSYS */
455 if ((SMB_VFS_CHMOD_ACL(handle->conn, path, mode) == -1) && (errno == ENOSYS))
456 errno = saved_errno;
457 }
458
459 END_PROFILE(syscall_mkdir);
460 return result;
461 }
462
463 static int vfswrap_rmdir(vfs_handle_struct *handle, const char *path)
464 {
465 int result;
466
467 START_PROFILE(syscall_rmdir);
468 result = rmdir(path);
469 END_PROFILE(syscall_rmdir);
470 return result;
471 }
472
473 static int vfswrap_closedir(vfs_handle_struct *handle, DIR *dirp)
474 {
475 int result;
476
477 START_PROFILE(syscall_closedir);
478 result = closedir(dirp);
479 END_PROFILE(syscall_closedir);
480 return result;
481 }
482
483 static void vfswrap_init_search_op(vfs_handle_struct *handle,
484 DIR *dirp)
485 {
486 /* Default behavior is a NOOP */
487 }
488
489 /* File operations */
490
491 static int vfswrap_open(vfs_handle_struct *handle,
492 struct smb_filename *smb_fname,
493 files_struct *fsp, int flags, mode_t mode)
494 {
495 int result = -1;
496
497 START_PROFILE(syscall_open);
498
499 if (smb_fname->stream_name) {
500 errno = ENOENT;
501 goto out;
502 }
503
504 result = open(smb_fname->base_name, flags, mode);
505 out:
506 END_PROFILE(syscall_open);
507 return result;
508 }
509
510 static NTSTATUS vfswrap_create_file(vfs_handle_struct *handle,
511 struct smb_request *req,
512 uint16_t root_dir_fid,
513 struct smb_filename *smb_fname,
514 uint32_t access_mask,
515 uint32_t share_access,
516 uint32_t create_disposition,
517 uint32_t create_options,
518 uint32_t file_attributes,
519 uint32_t oplock_request,
520 uint64_t allocation_size,
521 uint32_t private_flags,
522 struct security_descriptor *sd,
523 struct ea_list *ea_list,
524 files_struct **result,
525 int *pinfo)
526 {
527 return create_file_default(handle->conn, req, root_dir_fid, smb_fname,
528 access_mask, share_access,
529 create_disposition, create_options,
530 file_attributes, oplock_request,
531 allocation_size, private_flags,
532 sd, ea_list, result,
533 pinfo);
534 }
535
536 static int vfswrap_close(vfs_handle_struct *handle, files_struct *fsp)
537 {
538 int result;
539
540 START_PROFILE(syscall_close);
541 result = fd_close_posix(fsp);
542 END_PROFILE(syscall_close);
543 return result;
544 }
545
546 static ssize_t vfswrap_read(vfs_handle_struct *handle, files_struct *fsp, void *data, size_t n)
547 {
548 ssize_t result;
549
550 START_PROFILE_BYTES(syscall_read, n);
551 result = sys_read(fsp->fh->fd, data, n);
552 END_PROFILE(syscall_read);
553 return result;
554 }
555
556 static ssize_t vfswrap_pread(vfs_handle_struct *handle, files_struct *fsp, void *data,
557 size_t n, off_t offset)
558 {
559 ssize_t result;
560
561 #if defined(HAVE_PREAD) || defined(HAVE_PREAD64)
562 START_PROFILE_BYTES(syscall_pread, n);
563 result = sys_pread(fsp->fh->fd, data, n, offset);
564 END_PROFILE(syscall_pread);
565
566 if (result == -1 && errno == ESPIPE) {
567 /* Maintain the fiction that pipes can be seeked (sought?) on. */
568 result = SMB_VFS_READ(fsp, data, n);
569 fsp->fh->pos = 0;
570 }
571
572 #else /* HAVE_PREAD */
573 off_t curr;
574 int lerrno;
575
576 curr = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
577 if (curr == -1 && errno == ESPIPE) {
578 /* Maintain the fiction that pipes can be seeked (sought?) on. */
579 result = SMB_VFS_READ(fsp, data, n);
580 fsp->fh->pos = 0;
581 return result;
582 }
583
584 if (SMB_VFS_LSEEK(fsp, offset, SEEK_SET) == -1) {
585 return -1;
586 }
587
588 errno = 0;
589 result = SMB_VFS_READ(fsp, data, n);
590 lerrno = errno;
591
592 SMB_VFS_LSEEK(fsp, curr, SEEK_SET);
593 errno = lerrno;
594
595 #endif /* HAVE_PREAD */
596
597 return result;
598 }
599
600 static ssize_t vfswrap_write(vfs_handle_struct *handle, files_struct *fsp, const void *data, size_t n)
601 {
602 ssize_t result;
603
604 START_PROFILE_BYTES(syscall_write, n);
605 result = sys_write(fsp->fh->fd, data, n);
606 END_PROFILE(syscall_write);
607 return result;
608 }
609
610 static ssize_t vfswrap_pwrite(vfs_handle_struct *handle, files_struct *fsp, const void *data,
611 size_t n, off_t offset)
612 {
613 ssize_t result;
614
615 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
616 START_PROFILE_BYTES(syscall_pwrite, n);
617 result = sys_pwrite(fsp->fh->fd, data, n, offset);
618 END_PROFILE(syscall_pwrite);
619
620 if (result == -1 && errno == ESPIPE) {
621 /* Maintain the fiction that pipes can be sought on. */
622 result = SMB_VFS_WRITE(fsp, data, n);
623 }
624
625 #else /* HAVE_PWRITE */
626 off_t curr;
627 int lerrno;
628
629 curr = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
630 if (curr == -1) {
631 return -1;
632 }
633
634 if (SMB_VFS_LSEEK(fsp, offset, SEEK_SET) == -1) {
635 return -1;
636 }
637
638 result = SMB_VFS_WRITE(fsp, data, n);
639 lerrno = errno;
640
641 SMB_VFS_LSEEK(fsp, curr, SEEK_SET);
642 errno = lerrno;
643
644 #endif /* HAVE_PWRITE */
645
646 return result;
647 }
648
649 static void vfswrap_asys_finished(struct tevent_context *ev,
650 struct tevent_fd *fde,
651 uint16_t flags, void *p);
652
653 static bool vfswrap_init_asys_ctx(struct smbXsrv_connection *conn)
654 {
655 int ret;
656 int fd;
657
658 if (conn->asys_ctx != NULL) {
659 return true;
660 }
661 ret = asys_context_init(&conn->asys_ctx, aio_pending_size);
662 if (ret != 0) {
663 DEBUG(1, ("asys_context_init failed: %s\n", strerror(ret)));
664 return false;
665 }
666
667 fd = asys_signalfd(conn->asys_ctx);
668
669 set_blocking(fd, false);
670
671 conn->asys_fde = tevent_add_fd(conn->ev_ctx, conn, fd,
672 TEVENT_FD_READ,
673 vfswrap_asys_finished,
674 conn->asys_ctx);
675 if (conn->asys_fde == NULL) {
676 DEBUG(1, ("tevent_add_fd failed\n"));
677 asys_context_destroy(conn->asys_ctx);
678 conn->asys_ctx = NULL;
679 return false;
680 }
681 return true;
682 }
683
684 struct vfswrap_asys_state {
685 struct asys_context *asys_ctx;
686 struct tevent_req *req;
687 ssize_t ret;
688 int err;
689 };
690
691 static int vfswrap_asys_state_destructor(struct vfswrap_asys_state *s)
692 {
693 asys_cancel(s->asys_ctx, s->req);
694 return 0;
695 }
696
697 static struct tevent_req *vfswrap_pread_send(struct vfs_handle_struct *handle,
698 TALLOC_CTX *mem_ctx,
699 struct tevent_context *ev,
700 struct files_struct *fsp,
701 void *data,
702 size_t n, off_t offset)
703 {
704 struct tevent_req *req;
705 struct vfswrap_asys_state *state;
706 int ret;
707
708 req = tevent_req_create(mem_ctx, &state, struct vfswrap_asys_state);
709 if (req == NULL) {
710 return NULL;
711 }
712 if (!vfswrap_init_asys_ctx(handle->conn->sconn->conn)) {
713 tevent_req_oom(req);
714 return tevent_req_post(req, ev);
715 }
716 state->asys_ctx = handle->conn->sconn->conn->asys_ctx;
717 state->req = req;
718
719 ret = asys_pread(state->asys_ctx, fsp->fh->fd, data, n, offset, req);
720 if (ret != 0) {
721 tevent_req_error(req, ret);
722 return tevent_req_post(req, ev);
723 }
724 talloc_set_destructor(state, vfswrap_asys_state_destructor);
725
726 return req;
727 }
728
729 static struct tevent_req *vfswrap_pwrite_send(struct vfs_handle_struct *handle,
730 TALLOC_CTX *mem_ctx,
731 struct tevent_context *ev,
732 struct files_struct *fsp,
733 const void *data,
734 size_t n, off_t offset)
735 {
736 struct tevent_req *req;
737 struct vfswrap_asys_state *state;
738 int ret;
739
740 req = tevent_req_create(mem_ctx, &state, struct vfswrap_asys_state);
741 if (req == NULL) {
742 return NULL;
743 }
744 if (!vfswrap_init_asys_ctx(handle->conn->sconn->conn)) {
745 tevent_req_oom(req);
746 return tevent_req_post(req, ev);
747 }
748 state->asys_ctx = handle->conn->sconn->conn->asys_ctx;
749 state->req = req;
750
751 ret = asys_pwrite(state->asys_ctx, fsp->fh->fd, data, n, offset, req);
752 if (ret != 0) {
753 tevent_req_error(req, ret);
754 return tevent_req_post(req, ev);
755 }
756 talloc_set_destructor(state, vfswrap_asys_state_destructor);
757
758 return req;
759 }
760
761 static struct tevent_req *vfswrap_fsync_send(struct vfs_handle_struct *handle,
762 TALLOC_CTX *mem_ctx,
763 struct tevent_context *ev,
764 struct files_struct *fsp)
765 {
766 struct tevent_req *req;
767 struct vfswrap_asys_state *state;
768 int ret;
769
770 req = tevent_req_create(mem_ctx, &state, struct vfswrap_asys_state);
771 if (req == NULL) {
772 return NULL;
773 }
774 if (!vfswrap_init_asys_ctx(handle->conn->sconn->conn)) {
775 tevent_req_oom(req);
776 return tevent_req_post(req, ev);
777 }
778 state->asys_ctx = handle->conn->sconn->conn->asys_ctx;
779 state->req = req;
780
781 ret = asys_fsync(state->asys_ctx, fsp->fh->fd, req);
782 if (ret != 0) {
783 tevent_req_error(req, ret);
784 return tevent_req_post(req, ev);
785 }
786 talloc_set_destructor(state, vfswrap_asys_state_destructor);
787
788 return req;
789 }
790
791 static void vfswrap_asys_finished(struct tevent_context *ev,
792 struct tevent_fd *fde,
793 uint16_t flags, void *p)
794 {
795 struct asys_context *asys_ctx = (struct asys_context *)p;
796 struct tevent_req *req;
797 struct vfswrap_asys_state *state;
798 int res;
799 ssize_t ret;
800 int err;
801 void *private_data;
802
803 if ((flags & TEVENT_FD_READ) == 0) {
804 return;
805 }
806
807 while (true) {
808 res = asys_result(asys_ctx, &ret, &err, &private_data);
809 if (res == EINTR || res == EAGAIN) {
810 return;
811 }
812 #ifdef EWOULDBLOCK
813 if (res == EWOULDBLOCK) {
814 return;
815 }
816 #endif
817
818 if (res == ECANCELED) {
819 return;
820 }
821
822 if (res != 0) {
823 DEBUG(1, ("asys_result returned %s\n", strerror(res)));
824 return;
825 }
826
827 req = talloc_get_type_abort(private_data, struct tevent_req);
828 state = tevent_req_data(req, struct vfswrap_asys_state);
829
830 talloc_set_destructor(state, NULL);
831
832 state->ret = ret;
833 state->err = err;
834 tevent_req_defer_callback(req, ev);
835 tevent_req_done(req);
836 }
837 }
838
839 static ssize_t vfswrap_asys_ssize_t_recv(struct tevent_req *req, int *err)
840 {
841 struct vfswrap_asys_state *state = tevent_req_data(
842 req, struct vfswrap_asys_state);
843
844 if (tevent_req_is_unix_error(req, err)) {
845 return -1;
846 }
847 *err = state->err;
848 return state->ret;
849 }
850
851 static int vfswrap_asys_int_recv(struct tevent_req *req, int *err)
852 {
853 struct vfswrap_asys_state *state = tevent_req_data(
854 req, struct vfswrap_asys_state);
855
856 if (tevent_req_is_unix_error(req, err)) {
857 return -1;
858 }
859 *err = state->err;
860 return state->ret;
861 }
862
863 static off_t vfswrap_lseek(vfs_handle_struct *handle, files_struct *fsp, off_t offset, int whence)
864 {
865 off_t result = 0;
866
867 START_PROFILE(syscall_lseek);
868
869 /* Cope with 'stat' file opens. */
870 if (fsp->fh->fd != -1)
871 result = lseek(fsp->fh->fd, offset, whence);
872
873 /*
874 * We want to maintain the fiction that we can seek
875 * on a fifo for file system purposes. This allows
876 * people to set up UNIX fifo's that feed data to Windows
877 * applications. JRA.
878 */
879
880 if((result == -1) && (errno == ESPIPE)) {
881 result = 0;
882 errno = 0;
883 }
884
885 END_PROFILE(syscall_lseek);
886 return result;
887 }
888
889 static ssize_t vfswrap_sendfile(vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *hdr,
890 off_t offset, size_t n)
891 {
892 ssize_t result;
893
894 START_PROFILE_BYTES(syscall_sendfile, n);
895 result = sys_sendfile(tofd, fromfsp->fh->fd, hdr, offset, n);
896 END_PROFILE(syscall_sendfile);
897 return result;
898 }
899
900 static ssize_t vfswrap_recvfile(vfs_handle_struct *handle,
901 int fromfd,
902 files_struct *tofsp,
903 off_t offset,
904 size_t n)
905 {
906 ssize_t result;
907
908 START_PROFILE_BYTES(syscall_recvfile, n);
909 result = sys_recvfile(fromfd, tofsp->fh->fd, offset, n);
910 END_PROFILE(syscall_recvfile);
911 return result;
912 }
913
914 static int vfswrap_rename(vfs_handle_struct *handle,
915 const struct smb_filename *smb_fname_src,
916 const struct smb_filename *smb_fname_dst)
917 {
918 int result = -1;
919
920 START_PROFILE(syscall_rename);
921
922 if (smb_fname_src->stream_name || smb_fname_dst->stream_name) {
923 errno = ENOENT;
924 goto out;
925 }
926
927 result = rename(smb_fname_src->base_name, smb_fname_dst->base_name);
928
929 out:
930 END_PROFILE(syscall_rename);
931 return result;
932 }
933
934 static int vfswrap_fsync(vfs_handle_struct *handle, files_struct *fsp)
935 {
936 #ifdef HAVE_FSYNC
937 int result;
938
939 START_PROFILE(syscall_fsync);
940 result = fsync(fsp->fh->fd);
941 END_PROFILE(syscall_fsync);
942 return result;
943 #else
944 return 0;
945 #endif
946 }
947
948 static int vfswrap_stat(vfs_handle_struct *handle,
949 struct smb_filename *smb_fname)
950 {
951 int result = -1;
952
953 START_PROFILE(syscall_stat);
954
955 if (smb_fname->stream_name) {
956 errno = ENOENT;
957 goto out;
958 }
959
960 result = sys_stat(smb_fname->base_name, &smb_fname->st,
961 lp_fake_dir_create_times(SNUM(handle->conn)));
962 out:
963 END_PROFILE(syscall_stat);
964 return result;
965 }
966
967 static int vfswrap_fstat(vfs_handle_struct *handle, files_struct *fsp, SMB_STRUCT_STAT *sbuf)
968 {
969 int result;
970
971 START_PROFILE(syscall_fstat);
972 result = sys_fstat(fsp->fh->fd,
973 sbuf, lp_fake_dir_create_times(SNUM(handle->conn)));
974 END_PROFILE(syscall_fstat);
975 return result;
976 }
977
978 static int vfswrap_lstat(vfs_handle_struct *handle,
979 struct smb_filename *smb_fname)
980 {
981 int result = -1;
982
983 START_PROFILE(syscall_lstat);
984
985 if (smb_fname->stream_name) {
986 errno = ENOENT;
987 goto out;
988 }
989
990 result = sys_lstat(smb_fname->base_name, &smb_fname->st,
991 lp_fake_dir_create_times(SNUM(handle->conn)));
992 out:
993 END_PROFILE(syscall_lstat);
994 return result;
995 }
996
997 static NTSTATUS vfswrap_translate_name(struct vfs_handle_struct *handle,
998 const char *name,
999 enum vfs_translate_direction direction,
1000 TALLOC_CTX *mem_ctx,
1001 char **mapped_name)
1002 {
1003 return NT_STATUS_NONE_MAPPED;
1004 }
1005
1006 /*
1007 * Implement the default fsctl operation.
1008 */
1009 static bool vfswrap_logged_ioctl_message = false;
1010
1011 static NTSTATUS vfswrap_fsctl(struct vfs_handle_struct *handle,
1012 struct files_struct *fsp,
1013 TALLOC_CTX *ctx,
1014 uint32_t function,
1015 uint16_t req_flags, /* Needed for UNICODE ... */
1016 const uint8_t *_in_data,
1017 uint32_t in_len,
1018 uint8_t **_out_data,
1019 uint32_t max_out_len,
1020 uint32_t *out_len)
1021 {
1022 const char *in_data = (const char *)_in_data;
1023 char **out_data = (char **)_out_data;
1024
1025 switch (function) {
1026 case FSCTL_SET_SPARSE:
1027 {
1028 bool set_sparse = true;
1029 NTSTATUS status;
1030
1031 if (in_len >= 1 && in_data[0] == 0) {
1032 set_sparse = false;
1033 }
1034
1035 status = file_set_sparse(handle->conn, fsp, set_sparse);
1036
1037 DEBUG(NT_STATUS_IS_OK(status) ? 10 : 9,
1038 ("FSCTL_SET_SPARSE: fname[%s] set[%u] - %s\n",
1039 smb_fname_str_dbg(fsp->fsp_name), set_sparse,
1040 nt_errstr(status)));
1041
1042 return status;
1043 }
1044
1045 case FSCTL_CREATE_OR_GET_OBJECT_ID:
1046 {
1047 unsigned char objid[16];
1048 char *return_data = NULL;
1049
1050 /* This should return the object-id on this file.
1051 * I think I'll make this be the inode+dev. JRA.
1052 */
1053
1054 DEBUG(10,("FSCTL_CREATE_OR_GET_OBJECT_ID: called on %s\n",
1055 fsp_fnum_dbg(fsp)));
1056
1057 *out_len = (max_out_len >= 64) ? 64 : max_out_len;
1058 /* Hmmm, will this cause problems if less data asked for? */
1059 return_data = talloc_array(ctx, char, 64);
1060 if (return_data == NULL) {
1061 return NT_STATUS_NO_MEMORY;
1062 }
1063
1064 /* For backwards compatibility only store the dev/inode. */
1065 push_file_id_16(return_data, &fsp->file_id);
1066 memcpy(return_data+16,create_volume_objectid(fsp->conn,objid),16);
1067 push_file_id_16(return_data+32, &fsp->file_id);
1068 *out_data = return_data;
1069 return NT_STATUS_OK;
1070 }
1071
1072 case FSCTL_GET_REPARSE_POINT:
1073 {
1074 /* Fail it with STATUS_NOT_A_REPARSE_POINT */
1075 DEBUG(10, ("FSCTL_GET_REPARSE_POINT: called on %s. "
1076 "Status: NOT_IMPLEMENTED\n", fsp_fnum_dbg(fsp)));
1077 return NT_STATUS_NOT_A_REPARSE_POINT;
1078 }
1079
1080 case FSCTL_SET_REPARSE_POINT:
1081 {
1082 /* Fail it with STATUS_NOT_A_REPARSE_POINT */
1083 DEBUG(10, ("FSCTL_SET_REPARSE_POINT: called on %s. "
1084 "Status: NOT_IMPLEMENTED\n", fsp_fnum_dbg(fsp)));
1085 return NT_STATUS_NOT_A_REPARSE_POINT;
1086 }
1087
1088 case FSCTL_GET_SHADOW_COPY_DATA:
1089 {
1090 /*
1091 * This is called to retrieve the number of Shadow Copies (a.k.a. snapshots)
1092 * and return their volume names. If max_data_count is 16, then it is just
1093 * asking for the number of volumes and length of the combined names.
1094 *
1095 * pdata is the data allocated by our caller, but that uses
1096 * total_data_count (which is 0 in our case) rather than max_data_count.
1097 * Allocate the correct amount and return the pointer to let
1098 * it be deallocated when we return.
1099 */
1100 struct shadow_copy_data *shadow_data = NULL;
1101 bool labels = False;
1102 uint32 labels_data_count = 0;
1103 uint32 i;
1104 char *cur_pdata = NULL;
1105
1106 if (max_out_len < 16) {
1107 DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) < 16 is invalid!\n",
1108 max_out_len));
1109 return NT_STATUS_INVALID_PARAMETER;
1110 }
1111
1112 if (max_out_len > 16) {
1113 labels = True;
1114 }
1115
1116 shadow_data = talloc_zero(ctx, struct shadow_copy_data);
1117 if (shadow_data == NULL) {
1118 DEBUG(0,("TALLOC_ZERO() failed!\n"));
1119 return NT_STATUS_NO_MEMORY;
1120 }
1121
1122 /*
1123 * Call the VFS routine to actually do the work.
1124 */
1125 if (SMB_VFS_GET_SHADOW_COPY_DATA(fsp, shadow_data, labels)!=0) {
1126 TALLOC_FREE(shadow_data);
1127 if (errno == ENOSYS) {
1128 DEBUG(5,("FSCTL_GET_SHADOW_COPY_DATA: connectpath %s, not supported.\n",
1129 fsp->conn->connectpath));
1130 return NT_STATUS_NOT_SUPPORTED;
1131 } else {
1132 DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: connectpath %s, failed.\n",
1133 fsp->conn->connectpath));
1134 return NT_STATUS_UNSUCCESSFUL;
1135 }
1136 }
1137
1138 labels_data_count = (shadow_data->num_volumes * 2 *
1139 sizeof(SHADOW_COPY_LABEL)) + 2;
1140
1141 if (!labels) {
1142 *out_len = 16;
1143 } else {
1144 *out_len = 12 + labels_data_count;
1145 }
1146
1147 if (max_out_len < *out_len) {
1148 DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) too small (%u) bytes needed!\n",
1149 max_out_len, *out_len));
1150 TALLOC_FREE(shadow_data);
1151 return NT_STATUS_BUFFER_TOO_SMALL;
1152 }
1153
1154 cur_pdata = talloc_zero_array(ctx, char, *out_len);
1155 if (cur_pdata == NULL) {
1156 TALLOC_FREE(shadow_data);
1157 return NT_STATUS_NO_MEMORY;
1158 }
1159
1160 *out_data = cur_pdata;
1161
1162 /* num_volumes 4 bytes */
1163 SIVAL(cur_pdata, 0, shadow_data->num_volumes);
1164
1165 if (labels) {
1166 /* num_labels 4 bytes */
1167 SIVAL(cur_pdata, 4, shadow_data->num_volumes);
1168 }
1169
1170 /* needed_data_count 4 bytes */
1171 SIVAL(cur_pdata, 8, labels_data_count);
1172
1173 cur_pdata += 12;
1174
1175 DEBUG(10,("FSCTL_GET_SHADOW_COPY_DATA: %u volumes for path[%s].\n",
1176 shadow_data->num_volumes, fsp_str_dbg(fsp)));
1177 if (labels && shadow_data->labels) {
1178 for (i=0; i<shadow_data->num_volumes; i++) {
1179 srvstr_push(cur_pdata, req_flags,
1180 cur_pdata, shadow_data->labels[i],
1181 2 * sizeof(SHADOW_COPY_LABEL),
1182 STR_UNICODE|STR_TERMINATE);
1183 cur_pdata += 2 * sizeof(SHADOW_COPY_LABEL);
1184 DEBUGADD(10,("Label[%u]: '%s'\n",i,shadow_data->labels[i]));
1185 }
1186 }
1187
1188 TALLOC_FREE(shadow_data);
1189
1190 return NT_STATUS_OK;
1191 }
1192
1193 case FSCTL_FIND_FILES_BY_SID:
1194 {
1195 /* pretend this succeeded -
1196 *
1197 * we have to send back a list with all files owned by this SID
1198 *
1199 * but I have to check that --metze
1200 */
1201 struct dom_sid sid;
1202 uid_t uid;
1203 size_t sid_len;
1204
1205 DEBUG(10, ("FSCTL_FIND_FILES_BY_SID: called on %s\n",
1206 fsp_fnum_dbg(fsp)));
1207
1208 if (in_len < 8) {
1209 /* NT_STATUS_BUFFER_TOO_SMALL maybe? */
1210 return NT_STATUS_INVALID_PARAMETER;
1211 }
1212
1213 sid_len = MIN(in_len - 4,SID_MAX_SIZE);
1214
1215 /* unknown 4 bytes: this is not the length of the sid :-( */
1216 /*unknown = IVAL(pdata,0);*/
1217
1218 if (!sid_parse(in_data + 4, sid_len, &sid)) {
1219 return NT_STATUS_INVALID_PARAMETER;
1220 }
1221 DEBUGADD(10, ("for SID: %s\n", sid_string_dbg(&sid)));
1222
1223 if (!sid_to_uid(&sid, &uid)) {
1224 DEBUG(0,("sid_to_uid: failed, sid[%s] sid_len[%lu]\n",
1225 sid_string_dbg(&sid),
1226 (unsigned long)sid_len));
1227 uid = (-1);
1228 }
1229
1230 /* we can take a look at the find source :-)
1231 *
1232 * find ./ -uid $uid -name '*' is what we need here
1233 *
1234 *
1235 * and send 4bytes len and then NULL terminated unicode strings
1236 * for each file
1237 *
1238 * but I don't know how to deal with the paged results
1239 * (maybe we can hang the result anywhere in the fsp struct)
1240 *
1241 * but I don't know how to deal with the paged results
1242 * (maybe we can hang the result anywhere in the fsp struct)
1243 *
1244 * we don't send all files at once
1245 * and at the next we should *not* start from the beginning,
1246 * so we have to cache the result
1247 *
1248 * --metze
1249 */
1250
1251 /* this works for now... */
1252 return NT_STATUS_OK;
1253 }
1254
1255 case FSCTL_QUERY_ALLOCATED_RANGES:
1256 {
1257 /* FIXME: This is just a dummy reply, telling that all of the
1258 * file is allocated. MKS cp needs that.
1259 * Adding the real allocated ranges via FIEMAP on Linux
1260 * and SEEK_DATA/SEEK_HOLE on Solaris is needed to make
1261 * this FSCTL correct for sparse files.
1262 */
1263 NTSTATUS status;
1264 uint64_t offset, length;
1265 char *out_data_tmp = NULL;
1266
1267 if (in_len != 16) {
1268 DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: data_count(%u) != 16 is invalid!\n",
1269 in_len));
1270 return NT_STATUS_INVALID_PARAMETER;
1271 }
1272
1273 if (max_out_len < 16) {
1274 DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: max_out_len (%u) < 16 is invalid!\n",
1275 max_out_len));
1276 return NT_STATUS_INVALID_PARAMETER;
1277 }
1278
1279 offset = BVAL(in_data,0);
1280 length = BVAL(in_data,8);
1281
1282 if (offset + length < offset) {
1283 /* No 64-bit integer wrap. */
1284 return NT_STATUS_INVALID_PARAMETER;
1285 }
1286
1287 /* Shouldn't this be SMB_VFS_STAT ... ? */
1288 status = vfs_stat_fsp(fsp);
1289 if (!NT_STATUS_IS_OK(status)) {
1290 return status;
1291 }
1292
1293 *out_len = 16;
1294 out_data_tmp = talloc_array(ctx, char, *out_len);
1295 if (out_data_tmp == NULL) {
1296 DEBUG(10, ("unable to allocate memory for response\n"));
1297 return NT_STATUS_NO_MEMORY;
1298 }
1299
1300 if (offset > fsp->fsp_name->st.st_ex_size ||
1301 fsp->fsp_name->st.st_ex_size == 0 ||
1302 length == 0) {
1303 memset(out_data_tmp, 0, *out_len);
1304 } else {
1305 uint64_t end = offset + length;
1306 end = MIN(end, fsp->fsp_name->st.st_ex_size);
1307 SBVAL(out_data_tmp, 0, 0);
1308 SBVAL(out_data_tmp, 8, end);
1309 }
1310
1311 *out_data = out_data_tmp;
1312
1313 return NT_STATUS_OK;
1314 }
1315
1316 case FSCTL_IS_VOLUME_DIRTY:
1317 {
1318 DEBUG(10,("FSCTL_IS_VOLUME_DIRTY: called on %s "
1319 "(but remotely not supported)\n", fsp_fnum_dbg(fsp)));
1320 /*
1321 * http://msdn.microsoft.com/en-us/library/cc232128%28PROT.10%29.aspx
1322 * says we have to respond with NT_STATUS_INVALID_PARAMETER
1323 */
1324 return NT_STATUS_INVALID_PARAMETER;
1325 }
1326
1327 default:
1328 /*
1329 * Only print once ... unfortunately there could be lots of
1330 * different FSCTLs that are called.
1331 */
1332 if (!vfswrap_logged_ioctl_message) {
1333 vfswrap_logged_ioctl_message = true;
1334 DEBUG(2, ("%s (0x%x): Currently not implemented.\n",
1335 __func__, function));
1336 }
1337 }
1338
1339 return NT_STATUS_NOT_SUPPORTED;
1340 }
1341
1342 struct vfs_cc_state {
1343 off_t copied;
1344 uint8_t buf[65536];
1345 };
1346
1347 static struct tevent_req *vfswrap_copy_chunk_send(struct vfs_handle_struct *handle,
1348 TALLOC_CTX *mem_ctx,
1349 struct tevent_context *ev,
1350 struct files_struct *src_fsp,
1351 off_t src_off,
1352 struct files_struct *dest_fsp,
1353 off_t dest_off,
1354 off_t num)
1355 {
1356 struct tevent_req *req;
1357 struct vfs_cc_state *vfs_cc_state;
1358 NTSTATUS status;
1359
1360 DEBUG(10, ("performing server side copy chunk of length %lu\n",
1361 (unsigned long)num));
1362
1363 req = tevent_req_create(mem_ctx, &vfs_cc_state, struct vfs_cc_state);
1364 if (req == NULL) {
1365 return NULL;
1366 }
1367
1368 status = vfs_stat_fsp(src_fsp);
1369 if (tevent_req_nterror(req, status)) {
1370 return tevent_req_post(req, ev);
1371 }
1372
1373 if (src_fsp->fsp_name->st.st_ex_size < src_off + num) {
1374 /*
1375 * [MS-SMB2] 3.3.5.15.6 Handling a Server-Side Data Copy Request
1376 * If the SourceOffset or SourceOffset + Length extends beyond
1377 * the end of file, the server SHOULD<240> treat this as a
1378 * STATUS_END_OF_FILE error.
1379 * ...
1380 * <240> Section 3.3.5.15.6: Windows servers will return
1381 * STATUS_INVALID_VIEW_SIZE instead of STATUS_END_OF_FILE.
1382 */
1383 tevent_req_nterror(req, NT_STATUS_INVALID_VIEW_SIZE);
1384 return tevent_req_post(req, ev);
1385 }
1386
1387 /* could use 2.6.33+ sendfile here to do this in kernel */
1388 while (vfs_cc_state->copied < num) {
1389 ssize_t ret;
1390 struct lock_struct lck;
1391 int saved_errno;
1392
1393 off_t this_num = MIN(sizeof(vfs_cc_state->buf),
1394 num - vfs_cc_state->copied);
1395
1396 if (src_fsp->op == NULL) {
1397 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
1398 return tevent_req_post(req, ev);
1399 }
1400 init_strict_lock_struct(src_fsp,
1401 src_fsp->op->global->open_persistent_id,
1402 src_off,
1403 this_num,
1404 READ_LOCK,
1405 &lck);
1406
1407 if (!SMB_VFS_STRICT_LOCK(src_fsp->conn, src_fsp, &lck)) {
1408 tevent_req_nterror(req, NT_STATUS_FILE_LOCK_CONFLICT);
1409 return tevent_req_post(req, ev);
1410 }
1411
1412 ret = SMB_VFS_PREAD(src_fsp, vfs_cc_state->buf,
1413 this_num, src_off);
1414 if (ret == -1) {
1415 saved_errno = errno;
1416 }
1417
1418 SMB_VFS_STRICT_UNLOCK(src_fsp->conn, src_fsp, &lck);
1419
1420 if (ret == -1) {
1421 errno = saved_errno;
1422 tevent_req_nterror(req, map_nt_error_from_unix(errno));
1423 return tevent_req_post(req, ev);
1424 }
1425 if (ret != this_num) {
1426 /* zero tolerance for short reads */
1427 tevent_req_nterror(req, NT_STATUS_IO_DEVICE_ERROR);
1428 return tevent_req_post(req, ev);
1429 }
1430
1431 src_off += ret;
1432
1433 if (dest_fsp->op == NULL) {
1434 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
1435 return tevent_req_post(req, ev);
1436 }
1437
1438 init_strict_lock_struct(dest_fsp,
1439 dest_fsp->op->global->open_persistent_id,
1440 dest_off,
1441 this_num,
1442 WRITE_LOCK,
1443 &lck);
1444
1445 if (!SMB_VFS_STRICT_LOCK(dest_fsp->conn, dest_fsp, &lck)) {
1446 tevent_req_nterror(req, NT_STATUS_FILE_LOCK_CONFLICT);
1447 return tevent_req_post(req, ev);
1448 }
1449
1450 ret = SMB_VFS_PWRITE(dest_fsp, vfs_cc_state->buf,
1451 this_num, dest_off);
1452 if (ret == -1) {
1453 saved_errno = errno;
1454 }
1455
1456 SMB_VFS_STRICT_UNLOCK(src_fsp->conn, src_fsp, &lck);
1457
1458 if (ret == -1) {
1459 errno = saved_errno;
1460 tevent_req_nterror(req, map_nt_error_from_unix(errno));
1461 return tevent_req_post(req, ev);
1462 }
1463 if (ret != this_num) {
1464 /* zero tolerance for short writes */
1465 tevent_req_nterror(req, NT_STATUS_IO_DEVICE_ERROR);
1466 return tevent_req_post(req, ev);
1467 }
1468 dest_off += ret;
1469
1470 vfs_cc_state->copied += this_num;
1471 }
1472
1473 tevent_req_done(req);
1474 return tevent_req_post(req, ev);
1475 }
1476
1477 static NTSTATUS vfswrap_copy_chunk_recv(struct vfs_handle_struct *handle,
1478 struct tevent_req *req,
1479 off_t *copied)
1480 {
1481 struct vfs_cc_state *vfs_cc_state = tevent_req_data(req,
1482 struct vfs_cc_state);
1483 NTSTATUS status;
1484
1485 if (tevent_req_is_nterror(req, &status)) {
1486 DEBUG(2, ("server side copy chunk failed: %s\n",
1487 nt_errstr(status)));
1488 *copied = 0;
1489 tevent_req_received(req);
1490 return status;
1491 }
1492
1493 *copied = vfs_cc_state->copied;
1494 DEBUG(10, ("server side copy chunk copied %lu\n",
1495 (unsigned long)*copied));
1496 tevent_req_received(req);
1497
1498 return NT_STATUS_OK;
1499 }
1500
1501 /********************************************************************
1502 Given a stat buffer return the allocated size on disk, taking into
1503 account sparse files.
1504 ********************************************************************/
1505 static uint64_t vfswrap_get_alloc_size(vfs_handle_struct *handle,
1506 struct files_struct *fsp,
1507 const SMB_STRUCT_STAT *sbuf)
1508 {
1509 uint64_t result;
1510
1511 START_PROFILE(syscall_get_alloc_size);
1512
1513 if(S_ISDIR(sbuf->st_ex_mode)) {
1514 result = 0;
1515 goto out;
1516 }
1517
1518 #if defined(HAVE_STAT_ST_BLOCKS) && defined(STAT_ST_BLOCKSIZE)
1519 /* The type of st_blocksize is blkcnt_t which *MUST* be
1520 signed (according to POSIX) and can be less than 64-bits.
1521 Ensure when we're converting to 64 bits wide we don't
1522 sign extend. */
1523 #if defined(SIZEOF_BLKCNT_T_8)
1524 result = (uint64_t)STAT_ST_BLOCKSIZE * (uint64_t)sbuf->st_ex_blocks;
1525 #elif defined(SIZEOF_BLKCNT_T_4)
1526 {
1527 uint64_t bs = ((uint64_t)sbuf->st_ex_blocks) & 0xFFFFFFFFLL;
1528 result = (uint64_t)STAT_ST_BLOCKSIZE * bs;
1529 }
1530 #else
1531 #error SIZEOF_BLKCNT_T_NOT_A_SUPPORTED_VALUE
1532 #endif
1533 if (result == 0) {
1534 /*
1535 * Some file systems do not allocate a block for very
1536 * small files. But for non-empty file should report a
1537 * positive size.
1538 */
1539
1540 uint64_t filesize = get_file_size_stat(sbuf);
1541 if (filesize > 0) {
1542 result = MIN((uint64_t)STAT_ST_BLOCKSIZE, filesize);
1543 }
1544 }
1545 #else
1546 result = get_file_size_stat(sbuf);
1547 #endif
1548
1549 if (fsp && fsp->initial_allocation_size)
1550 result = MAX(result,fsp->initial_allocation_size);
1551
1552 result = smb_roundup(handle->conn, result);
1553
1554 out:
1555 END_PROFILE(syscall_get_alloc_size);
1556 return result;
1557 }
1558
1559 static int vfswrap_unlink(vfs_handle_struct *handle,
1560 const struct smb_filename *smb_fname)
1561 {
1562 int result = -1;
1563
1564 START_PROFILE(syscall_unlink);
1565
1566 if (smb_fname->stream_name) {
1567 errno = ENOENT;
1568 goto out;
1569 }
1570 result = unlink(smb_fname->base_name);
1571
1572 out:
1573 END_PROFILE(syscall_unlink);
1574 return result;
1575 }
1576
1577 static int vfswrap_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
1578 {
1579 int result;
1580
1581 START_PROFILE(syscall_chmod);
1582
1583 /*
1584 * We need to do this due to the fact that the default POSIX ACL
1585 * chmod modifies the ACL *mask* for the group owner, not the
1586 * group owner bits directly. JRA.
1587 */
1588
1589
1590 {
1591 int saved_errno = errno; /* We might get ENOSYS */
1592 if ((result = SMB_VFS_CHMOD_ACL(handle->conn, path, mode)) == 0) {
1593 END_PROFILE(syscall_chmod);
1594 return result;
1595 }
1596 /* Error - return the old errno. */
1597 errno = saved_errno;
1598 }
1599
1600 result = chmod(path, mode);
1601 END_PROFILE(syscall_chmod);
1602 return result;
1603 }
1604
1605 static int vfswrap_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
1606 {
1607 int result;
1608
1609 START_PROFILE(syscall_fchmod);
1610
1611 /*
1612 * We need to do this due to the fact that the default POSIX ACL
1613 * chmod modifies the ACL *mask* for the group owner, not the
1614 * group owner bits directly. JRA.
1615 */
1616
1617 {
1618 int saved_errno = errno; /* We might get ENOSYS */
1619 if ((result = SMB_VFS_FCHMOD_ACL(fsp, mode)) == 0) {
1620 END_PROFILE(syscall_fchmod);
1621 return result;
1622 }
1623 /* Error - return the old errno. */
1624 errno = saved_errno;
1625 }
1626
1627 #if defined(HAVE_FCHMOD)
1628 result = fchmod(fsp->fh->fd, mode);
1629 #else
1630 result = -1;
1631 errno = ENOSYS;
1632 #endif
1633
1634 END_PROFILE(syscall_fchmod);
1635 return result;
1636 }
1637
1638 static int vfswrap_chown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
1639 {
1640 int result;
1641
1642 START_PROFILE(syscall_chown);
1643 result = chown(path, uid, gid);
1644 END_PROFILE(syscall_chown);
1645 return result;
1646 }
1647
1648 static int vfswrap_fchown(vfs_handle_struct *handle, files_struct *fsp, uid_t uid, gid_t gid)
1649 {
1650 #ifdef HAVE_FCHOWN
1651 int result;
1652
1653 START_PROFILE(syscall_fchown);
1654 result = fchown(fsp->fh->fd, uid, gid);
1655 END_PROFILE(syscall_fchown);
1656 return result;
1657 #else
1658 errno = ENOSYS;
1659 return -1;
1660 #endif
1661 }
1662
1663 static int vfswrap_lchown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
1664 {
1665 int result;
1666
1667 START_PROFILE(syscall_lchown);
1668 result = lchown(path, uid, gid);
1669 END_PROFILE(syscall_lchown);
1670 return result;
1671 }
1672
1673 static int vfswrap_chdir(vfs_handle_struct *handle, const char *path)
1674 {
1675 int result;
1676
1677 START_PROFILE(syscall_chdir);
1678 result = chdir(path);
1679 END_PROFILE(syscall_chdir);
1680 return result;
1681 }
1682
1683 static char *vfswrap_getwd(vfs_handle_struct *handle)
1684 {
1685 char *result;
1686
1687 START_PROFILE(syscall_getwd);
1688 result = sys_getwd();
1689 END_PROFILE(syscall_getwd);
1690 return result;
1691 }
1692
1693 /*********************************************************************
1694 nsec timestamp resolution call. Convert down to whatever the underlying
1695 system will support.
1696 **********************************************************************/
1697
1698 static int vfswrap_ntimes(vfs_handle_struct *handle,
1699 const struct smb_filename *smb_fname,
1700 struct smb_file_time *ft)
1701 {
1702 int result = -1;
1703
1704 START_PROFILE(syscall_ntimes);
1705
1706 if (smb_fname->stream_name) {
1707 errno = ENOENT;
1708 goto out;
1709 }
1710
1711 if (ft != NULL) {
1712 if (null_timespec(ft->atime)) {
1713 ft->atime= smb_fname->st.st_ex_atime;
1714 }
1715
1716 if (null_timespec(ft->mtime)) {
1717 ft->mtime = smb_fname->st.st_ex_mtime;
1718 }
1719
1720 if (!null_timespec(ft->create_time)) {
1721 set_create_timespec_ea(handle->conn,
1722 smb_fname,
1723 ft->create_time);
1724 }
1725
1726 if ((timespec_compare(&ft->atime,
1727 &smb_fname->st.st_ex_atime) == 0) &&
1728 (timespec_compare(&ft->mtime,
1729 &smb_fname->st.st_ex_mtime) == 0)) {
1730 return 0;
1731 }
1732 }
1733
1734 #if defined(HAVE_UTIMENSAT)
1735 if (ft != NULL) {
1736 struct timespec ts[2];
1737 ts[0] = ft->atime;
1738 ts[1] = ft->mtime;
1739 result = utimensat(AT_FDCWD, smb_fname->base_name, ts, 0);
1740 } else {
1741 result = utimensat(AT_FDCWD, smb_fname->base_name, NULL, 0);
1742 }
1743 if (!((result == -1) && (errno == ENOSYS))) {
1744 goto out;
1745 }
1746 #endif
1747 #if defined(HAVE_UTIMES)
1748 if (ft != NULL) {
1749 struct timeval tv[2];
1750 tv[0] = convert_timespec_to_timeval(ft->atime);
1751 tv[1] = convert_timespec_to_timeval(ft->mtime);
1752 result = utimes(smb_fname->base_name, tv);
1753 } else {
1754 result = utimes(smb_fname->base_name, NULL);
1755 }
1756 if (!((result == -1) && (errno == ENOSYS))) {
1757 goto out;
1758 }
1759 #endif
1760 #if defined(HAVE_UTIME)
1761 if (ft != NULL) {
1762 struct utimbuf times;
1763 times.actime = convert_timespec_to_time_t(ft->atime);
1764 times.modtime = convert_timespec_to_time_t(ft->mtime);
1765 result = utime(smb_fname->base_name, &times);
1766 } else {
1767 result = utime(smb_fname->base_name, NULL);
1768 }
1769 if (!((result == -1) && (errno == ENOSYS))) {
1770 goto out;
1771 }
1772 #endif
1773 errno = ENOSYS;
1774 result = -1;
1775
1776 out:
1777 END_PROFILE(syscall_ntimes);
1778 return result;
1779 }
1780
1781 /*********************************************************************
1782 A version of ftruncate that will write the space on disk if strict
1783 allocate is set.
1784 **********************************************************************/
1785
1786 static int strict_allocate_ftruncate(vfs_handle_struct *handle, files_struct *fsp, off_t len)
1787 {
1788 off_t space_to_write;
1789 uint64_t space_avail;
1790 uint64_t bsize,dfree,dsize;
1791 int ret;
1792 NTSTATUS status;
1793 SMB_STRUCT_STAT *pst;
1794
1795 status = vfs_stat_fsp(fsp);
1796 if (!NT_STATUS_IS_OK(status)) {
1797 return -1;
1798 }
1799 pst = &fsp->fsp_name->st;
1800
1801 #ifdef S_ISFIFO
1802 if (S_ISFIFO(pst->st_ex_mode))
1803 return 0;
1804 #endif
1805
1806 if (pst->st_ex_size == len)
1807 return 0;
1808
1809 /* Shrink - just ftruncate. */
1810 if (pst->st_ex_size > len)
1811 return ftruncate(fsp->fh->fd, len);
1812
1813 space_to_write = len - pst->st_ex_size;
1814
1815 /* for allocation try fallocate first. This can fail on some
1816 platforms e.g. when the filesystem doesn't support it and no
1817 emulation is being done by the libc (like on AIX with JFS1). In that
1818 case we do our own emulation. fallocate implementations can
1819 return ENOTSUP or EINVAL in cases like that. */
1820 ret = SMB_VFS_FALLOCATE(fsp, VFS_FALLOCATE_EXTEND_SIZE,
1821 pst->st_ex_size, space_to_write);
1822 if (ret == -1 && errno == ENOSPC) {
1823 return -1;
1824 }
1825 if (ret == 0) {
1826 return 0;
1827 }
1828 DEBUG(10,("strict_allocate_ftruncate: SMB_VFS_FALLOCATE failed with "
1829 "error %d. Falling back to slow manual allocation\n", errno));
1830
1831 /* available disk space is enough or not? */
1832 space_avail = get_dfree_info(fsp->conn,
1833 fsp->fsp_name->base_name, false,
1834 &bsize,&dfree,&dsize);
1835 /* space_avail is 1k blocks */
1836 if (space_avail == (uint64_t)-1 ||
1837 ((uint64_t)space_to_write/1024 > space_avail) ) {
1838 errno = ENOSPC;
1839 return -1;
1840 }
1841
1842 /* Write out the real space on disk. */
1843 ret = vfs_slow_fallocate(fsp, pst->st_ex_size, space_to_write);
1844 if (ret != 0) {
1845 return -1;
1846 }
1847
1848 return 0;
1849 }
1850
1851 static int vfswrap_ftruncate(vfs_handle_struct *handle, files_struct *fsp, off_t len)
1852 {
1853 int result = -1;
1854 SMB_STRUCT_STAT *pst;
1855 NTSTATUS status;
1856 char c = 0;
1857
1858 START_PROFILE(syscall_ftruncate);
1859
1860 if (lp_strict_allocate(SNUM(fsp->conn)) && !fsp->is_sparse) {
1861 result = strict_allocate_ftruncate(handle, fsp, len);
1862 END_PROFILE(syscall_ftruncate);
1863 return result;
1864 }
1865
1866 /* we used to just check HAVE_FTRUNCATE_EXTEND and only use
1867 ftruncate if the system supports it. Then I discovered that
1868 you can have some filesystems that support ftruncate
1869 expansion and some that don't! On Linux fat can't do
1870 ftruncate extend but ext2 can. */
1871
1872 result = ftruncate(fsp->fh->fd, len);
1873 if (result == 0)
1874 goto done;
1875
1876 /* According to W. R. Stevens advanced UNIX prog. Pure 4.3 BSD cannot
1877 extend a file with ftruncate. Provide alternate implementation
1878 for this */
1879
1880 /* Do an fstat to see if the file is longer than the requested
1881 size in which case the ftruncate above should have
1882 succeeded or shorter, in which case seek to len - 1 and
1883 write 1 byte of zero */
1884 status = vfs_stat_fsp(fsp);
1885 if (!NT_STATUS_IS_OK(status)) {
1886 goto done;
1887 }
1888 pst = &fsp->fsp_name->st;
1889
1890 #ifdef S_ISFIFO
1891 if (S_ISFIFO(pst->st_ex_mode)) {
1892 result = 0;
1893 goto done;
1894 }
1895 #endif
1896
1897 if (pst->st_ex_size == len) {
1898 result = 0;
1899 goto done;
1900 }
1901
1902 if (pst->st_ex_size > len) {
1903 /* the ftruncate should have worked */
1904 goto done;
1905 }
1906
1907 if (SMB_VFS_PWRITE(fsp, &c, 1, len-1)!=1) {
1908 goto done;
1909 }
1910
1911 result = 0;
1912
1913 done:
1914
1915 END_PROFILE(syscall_ftruncate);
1916 return result;
1917 }
1918
1919 static int vfswrap_fallocate(vfs_handle_struct *handle,
1920 files_struct *fsp,
1921 enum vfs_fallocate_mode mode,
1922 off_t offset,
1923 off_t len)
1924 {
1925 int result;
1926
1927 START_PROFILE(syscall_fallocate);
1928 if (mode == VFS_FALLOCATE_EXTEND_SIZE) {
1929 result = sys_posix_fallocate(fsp->fh->fd, offset, len);
1930 /*
1931 * posix_fallocate returns 0 on success, errno on error
1932 * and doesn't set errno. Make it behave like fallocate()
1933 * which returns -1, and sets errno on failure.
1934 */
1935 if (result != 0) {
1936 errno = result;
1937 result = -1;
1938 }
1939 } else if (mode == VFS_FALLOCATE_KEEP_SIZE) {
1940 result = sys_fallocate(fsp->fh->fd, mode, offset, len);
1941 } else {
1942 errno = EINVAL;
1943 result = -1;
1944 }
1945 END_PROFILE(syscall_fallocate);
1946 return result;
1947 }
1948
1949 static bool vfswrap_lock(vfs_handle_struct *handle, files_struct *fsp, int op, off_t offset, off_t count, int type)
1950 {
1951 bool result;
1952
1953 START_PROFILE(syscall_fcntl_lock);
1954 result = fcntl_lock(fsp->fh->fd, op, offset, count, type);
1955 END_PROFILE(syscall_fcntl_lock);
1956 return result;
1957 }
1958
1959 static int vfswrap_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
1960 uint32 share_mode, uint32 access_mask)
1961 {
1962 START_PROFILE(syscall_kernel_flock);
1963 kernel_flock(fsp->fh->fd, share_mode, access_mask);
1964 END_PROFILE(syscall_kernel_flock);
1965 return 0;
1966 }
1967
1968 static bool vfswrap_getlock(vfs_handle_struct *handle, files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid)
1969 {
1970 bool result;
1971
1972 START_PROFILE(syscall_fcntl_getlock);
1973 result = fcntl_getlock(fsp->fh->fd, poffset, pcount, ptype, ppid);
1974 END_PROFILE(syscall_fcntl_getlock);
1975 return result;
1976 }
1977
1978 static int vfswrap_linux_setlease(vfs_handle_struct *handle, files_struct *fsp,
1979 int leasetype)
1980 {
1981 int result = -1;
1982
1983 START_PROFILE(syscall_linux_setlease);
1984
1985 #ifdef HAVE_KERNEL_OPLOCKS_LINUX
1986 result = linux_setlease(fsp->fh->fd, leasetype);
1987 #else
1988 errno = ENOSYS;
1989 #endif
1990 END_PROFILE(syscall_linux_setlease);
1991 return result;
1992 }
1993
1994 static int vfswrap_symlink(vfs_handle_struct *handle, const char *oldpath, const char *newpath)
1995 {
1996 int result;
1997
1998 START_PROFILE(syscall_symlink);
1999 result = symlink(oldpath, newpath);
2000 END_PROFILE(syscall_symlink);
2001 return result;
2002 }
2003
2004 static int vfswrap_readlink(vfs_handle_struct *handle, const char *path, char *buf, size_t bufsiz)
2005 {
2006 int result;
2007
2008 START_PROFILE(syscall_readlink);
2009 result = readlink(path, buf, bufsiz);
2010 END_PROFILE(syscall_readlink);
2011 return result;
2012 }
2013
2014 static int vfswrap_link(vfs_handle_struct *handle, const char *oldpath, const char *newpath)
2015 {
2016 int result;
2017
2018 START_PROFILE(syscall_link);
2019 result = link(oldpath, newpath);
2020 END_PROFILE(syscall_link);
2021 return result;
2022 }
2023
2024 static int vfswrap_mknod(vfs_handle_struct *handle, const char *pathname, mode_t mode, SMB_DEV_T dev)
2025 {
2026 int result;
2027
2028 START_PROFILE(syscall_mknod);
2029 result = sys_mknod(pathname, mode, dev);
2030 END_PROFILE(syscall_mknod);
2031 return result;
2032 }
2033
2034 static char *vfswrap_realpath(vfs_handle_struct *handle, const char *path)
2035 {
2036 char *result;
2037
2038 START_PROFILE(syscall_realpath);
2039 #ifdef REALPATH_TAKES_NULL
2040 result = realpath(path, NULL);
2041 #else
2042 result = SMB_MALLOC_ARRAY(char, PATH_MAX+1);
2043 if (result) {
2044 char *resolved_path = realpath(path, result);
2045 if (!resolved_path) {
2046 SAFE_FREE(result);
2047 } else {
2048 /* SMB_ASSERT(result == resolved_path) ? */
2049 result = resolved_path;
2050 }
2051 }
2052 #endif
2053 END_PROFILE(syscall_realpath);
2054 return result;
2055 }
2056
2057 static NTSTATUS vfswrap_notify_watch(vfs_handle_struct *vfs_handle,
2058 struct sys_notify_context *ctx,
2059 const char *path,
2060 uint32_t *filter,
2061 uint32_t *subdir_filter,
2062 void (*callback)(struct sys_notify_context *ctx,
2063 void *private_data,
2064 struct notify_event *ev),
2065 void *private_data, void *handle)
2066 {
2067 /*
2068 * So far inotify is the only supported default notify mechanism. If
2069 * another platform like the the BSD's or a proprietary Unix comes
2070 * along and wants another default, we can play the same trick we
2071 * played with Posix ACLs.
2072 *
2073 * Until that is the case, hard-code inotify here.
2074 */
2075 #ifdef HAVE_INOTIFY
2076 if (lp_kernel_change_notify(vfs_handle->conn->params)) {
2077 return inotify_watch(ctx, path, filter, subdir_filter,
2078 callback, private_data, handle);
2079 }
2080 #endif
2081 /*
2082 * Do nothing, leave everything to notify_internal.c
2083 */
2084 return NT_STATUS_OK;
2085 }
2086
2087 static int vfswrap_chflags(vfs_handle_struct *handle, const char *path,
2088 unsigned int flags)
2089 {
2090 #ifdef HAVE_CHFLAGS
2091 return chflags(path, flags);
2092 #else
2093 errno = ENOSYS;
2094 return -1;
2095 #endif
2096 }
2097
2098 static struct file_id vfswrap_file_id_create(struct vfs_handle_struct *handle,
2099 const SMB_STRUCT_STAT *sbuf)
2100 {
2101 struct file_id key;
2102
2103 /* the ZERO_STRUCT ensures padding doesn't break using the key as a
2104 * blob */
2105 ZERO_STRUCT(key);
2106
2107 key.devid = sbuf->st_ex_dev;
2108 key.inode = sbuf->st_ex_ino;
2109 /* key.extid is unused by default. */
2110
2111 return key;
2112 }
2113
2114 static NTSTATUS vfswrap_streaminfo(vfs_handle_struct *handle,
2115 struct files_struct *fsp,
2116 const char *fname,
2117 TALLOC_CTX *mem_ctx,
2118 unsigned int *pnum_streams,
2119 struct stream_struct **pstreams)
2120 {
2121 SMB_STRUCT_STAT sbuf;
2122 struct stream_struct *tmp_streams = NULL;
2123 int ret;
2124
2125 if ((fsp != NULL) && (fsp->is_directory)) {
2126 /*
2127 * No default streams on directories
2128 */
2129 goto done;
2130 }
2131
2132 if ((fsp != NULL) && (fsp->fh->fd != -1)) {
2133 ret = SMB_VFS_FSTAT(fsp, &sbuf);
2134 }
2135 else {
2136 struct smb_filename smb_fname;
2137
2138 ZERO_STRUCT(smb_fname);
2139 smb_fname.base_name = discard_const_p(char, fname);
2140
2141 if (lp_posix_pathnames()) {
2142 ret = SMB_VFS_LSTAT(handle->conn, &smb_fname);
2143 } else {
2144 ret = SMB_VFS_STAT(handle->conn, &smb_fname);
2145 }
2146 sbuf = smb_fname.st;
2147 }
2148
2149 if (ret == -1) {
2150 return map_nt_error_from_unix(errno);
2151 }
2152
2153 if (S_ISDIR(sbuf.st_ex_mode)) {
2154 goto done;
2155 }
2156
2157 tmp_streams = talloc_realloc(mem_ctx, *pstreams, struct stream_struct,
2158 (*pnum_streams) + 1);
2159 if (tmp_streams == NULL) {
2160 return NT_STATUS_NO_MEMORY;
2161 }
2162 tmp_streams[*pnum_streams].name = talloc_strdup(tmp_streams, "::$DATA");
2163 if (tmp_streams[*pnum_streams].name == NULL) {
2164 return NT_STATUS_NO_MEMORY;
2165 }
2166 tmp_streams[*pnum_streams].size = sbuf.st_ex_size;
2167 tmp_streams[*pnum_streams].alloc_size = SMB_VFS_GET_ALLOC_SIZE(handle->conn, fsp, &sbuf);
2168
2169 *pnum_streams += 1;
2170 *pstreams = tmp_streams;
2171 done:
2172 return NT_STATUS_OK;
2173 }
2174
2175 static int vfswrap_get_real_filename(struct vfs_handle_struct *handle,
2176 const char *path,
2177 const char *name,
2178 TALLOC_CTX *mem_ctx,
2179 char **found_name)
2180 {
2181 /*
2182 * Don't fall back to get_real_filename so callers can differentiate
2183 * between a full directory scan and an actual case-insensitive stat.
2184 */
2185 errno = EOPNOTSUPP;
2186 return -1;
2187 }
2188
2189 static const char *vfswrap_connectpath(struct vfs_handle_struct *handle,
2190 const char *fname)
2191 {
2192 return handle->conn->connectpath;
2193 }
2194
2195 static NTSTATUS vfswrap_brl_lock_windows(struct vfs_handle_struct *handle,
2196 struct byte_range_lock *br_lck,
2197 struct lock_struct *plock,
2198 bool blocking_lock,
2199 struct blocking_lock_record *blr)
2200 {
2201 SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2202
2203 /* Note: blr is not used in the default implementation. */
2204 return brl_lock_windows_default(br_lck, plock, blocking_lock);
2205 }
2206
2207 static bool vfswrap_brl_unlock_windows(struct vfs_handle_struct *handle,
2208 struct messaging_context *msg_ctx,
2209 struct byte_range_lock *br_lck,
2210 const struct lock_struct *plock)
2211 {
2212 SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2213
2214 return brl_unlock_windows_default(msg_ctx, br_lck, plock);
2215 }
2216
2217 static bool vfswrap_brl_cancel_windows(struct vfs_handle_struct *handle,
2218 struct byte_range_lock *br_lck,
2219 struct lock_struct *plock,
2220 struct blocking_lock_record *blr)
2221 {
2222 SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2223
2224 /* Note: blr is not used in the default implementation. */
2225 return brl_lock_cancel_default(br_lck, plock);
2226 }
2227
2228 static bool vfswrap_strict_lock(struct vfs_handle_struct *handle,
2229 files_struct *fsp,
2230 struct lock_struct *plock)
2231 {
2232 SMB_ASSERT(plock->lock_type == READ_LOCK ||
2233 plock->lock_type == WRITE_LOCK);
2234
2235 return strict_lock_default(fsp, plock);
2236 }
2237
2238 static void vfswrap_strict_unlock(struct vfs_handle_struct *handle,
2239 files_struct *fsp,
2240 struct lock_struct *plock)
2241 {
2242 SMB_ASSERT(plock->lock_type == READ_LOCK ||
2243 plock->lock_type == WRITE_LOCK);
2244
2245 strict_unlock_default(fsp, plock);
2246 }
2247
2248 /* NT ACL operations. */
2249
2250 static NTSTATUS vfswrap_fget_nt_acl(vfs_handle_struct *handle,
2251 files_struct *fsp,
2252 uint32 security_info,
2253 TALLOC_CTX *mem_ctx,
2254 struct security_descriptor **ppdesc)
2255 {
2256 NTSTATUS result;
2257
2258 START_PROFILE(fget_nt_acl);
2259 result = posix_fget_nt_acl(fsp, security_info,
2260 mem_ctx, ppdesc);
2261 END_PROFILE(fget_nt_acl);
2262 return result;
2263 }
2264
2265 static NTSTATUS vfswrap_get_nt_acl(vfs_handle_struct *handle,
2266 const char *name,
2267 uint32 security_info,
2268 TALLOC_CTX *mem_ctx,
2269 struct security_descriptor **ppdesc)
2270 {
2271 NTSTATUS result;
2272
2273 START_PROFILE(get_nt_acl);
2274 result = posix_get_nt_acl(handle->conn, name, security_info,
2275 mem_ctx, ppdesc);
2276 END_PROFILE(get_nt_acl);
2277 return result;
2278 }
2279
2280 static NTSTATUS vfswrap_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const struct security_descriptor *psd)
2281 {
2282 NTSTATUS result;
2283
2284 START_PROFILE(fset_nt_acl);
2285 result = set_nt_acl(fsp, security_info_sent, psd);
2286 END_PROFILE(fset_nt_acl);
2287 return result;
2288 }
2289
2290 static NTSTATUS vfswrap_audit_file(struct vfs_handle_struct *handle,
2291 struct smb_filename *file,
2292 struct security_acl *sacl,
2293 uint32_t access_requested,
2294 uint32_t access_denied)
2295 {
2296 return NT_STATUS_OK; /* Nothing to do here ... */
2297 }
2298
2299 static int vfswrap_chmod_acl(vfs_handle_struct *handle, const char *name, mode_t mode)
2300 {
2301 #ifdef HAVE_NO_ACL
2302 errno = ENOSYS;
2303 return -1;
2304 #else
2305 int result;
2306
2307 START_PROFILE(chmod_acl);
2308 result = chmod_acl(handle->conn, name, mode);
2309 END_PROFILE(chmod_acl);
2310 return result;
2311 #endif
2312 }
2313
2314 static int vfswrap_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
2315 {
2316 #ifdef HAVE_NO_ACL
2317 errno = ENOSYS;
2318 return -1;
2319 #else
2320 int result;
2321
2322 START_PROFILE(fchmod_acl);
2323 result = fchmod_acl(fsp, mode);
2324 END_PROFILE(fchmod_acl);
2325 return result;
2326 #endif
2327 }
2328
2329 static SMB_ACL_T vfswrap_sys_acl_get_file(vfs_handle_struct *handle,
2330 const char *path_p,
2331 SMB_ACL_TYPE_T type,
2332 TALLOC_CTX *mem_ctx)
2333 {
2334 return sys_acl_get_file(handle, path_p, type, mem_ctx);
2335 }
2336
2337 static SMB_ACL_T vfswrap_sys_acl_get_fd(vfs_handle_struct *handle,
2338 files_struct *fsp,
2339 TALLOC_CTX *mem_ctx)
2340 {
2341 return sys_acl_get_fd(handle, fsp, mem_ctx);
2342 }
2343
2344 static int vfswrap_sys_acl_set_file(vfs_handle_struct *handle, const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl)
2345 {
2346 return sys_acl_set_file(handle, name, acltype, theacl);
2347 }
2348
2349 static int vfswrap_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp, SMB_ACL_T theacl)
2350 {
2351 return sys_acl_set_fd(handle, fsp, theacl);
2352 }
2353
2354 static int vfswrap_sys_acl_delete_def_file(vfs_handle_struct *handle, const char *path)
2355 {
2356 return sys_acl_delete_def_file(handle, path);
2357 }
2358
2359 /****************************************************************
2360 Extended attribute operations.
2361 *****************************************************************/
2362
2363 static ssize_t vfswrap_getxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
2364 {
2365 return getxattr(path, name, value, size);
2366 }
2367
2368 static ssize_t vfswrap_fgetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size)
2369 {
2370 return fgetxattr(fsp->fh->fd, name, value, size);
2371 }
2372
2373 static ssize_t vfswrap_listxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
2374 {
2375 return listxattr(path, list, size);
2376 }
2377
2378 static ssize_t vfswrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size)
2379 {
2380 return flistxattr(fsp->fh->fd, list, size);
2381 }
2382
2383 static int vfswrap_removexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
2384 {
2385 return removexattr(path, name);
2386 }
2387
2388 static int vfswrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name)
2389 {
2390 return fremovexattr(fsp->fh->fd, name);
2391 }
2392
2393 static int vfswrap_setxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
2394 {
2395 return setxattr(path, name, value, size, flags);
2396 }
2397
2398 static int vfswrap_fsetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags)
2399 {
2400 return fsetxattr(fsp->fh->fd, name, value, size, flags);
2401 }
2402
2403 static bool vfswrap_aio_force(struct vfs_handle_struct *handle, struct files_struct *fsp)
2404 {
2405 return false;
2406 }
2407
2408 static bool vfswrap_is_offline(struct vfs_handle_struct *handle,
2409 const struct smb_filename *fname,
2410 SMB_STRUCT_STAT *sbuf)
2411 {
2412 NTSTATUS status;
2413 char *path;
2414 bool offline = false;
2415
2416 if (ISDOT(fname->base_name) || ISDOTDOT(fname->base_name)) {
2417 return false;
2418 }
2419
2420 if (!lp_dmapi_support(SNUM(handle->conn)) || !dmapi_have_session()) {
2421 #if defined(ENOTSUP)
2422 errno = ENOTSUP;
2423 #endif
2424 return false;
2425 }
2426
2427 status = get_full_smb_filename(talloc_tos(), fname, &path);
2428 if (!NT_STATUS_IS_OK(status)) {
2429 errno = map_errno_from_nt_status(status);
2430 return false;
2431 }
2432
2433 offline = (dmapi_file_flags(path) & FILE_ATTRIBUTE_OFFLINE) != 0;
2434
2435 TALLOC_FREE(path);
2436
2437 return offline;
2438 }
2439
2440 static int vfswrap_set_offline(struct vfs_handle_struct *handle,
2441 const struct smb_filename *fname)
2442 {
2443 /* We don't know how to set offline bit by default, needs to be overriden in the vfs modules */
2444 #if defined(ENOTSUP)
2445 errno = ENOTSUP;
2446 #endif
2447 return -1;
2448 }
2449
2450 static NTSTATUS vfswrap_durable_cookie(struct vfs_handle_struct *handle,
2451 struct files_struct *fsp,
2452 TALLOC_CTX *mem_ctx,
2453 DATA_BLOB *cookie)
2454 {
2455 return vfs_default_durable_cookie(fsp, mem_ctx, cookie);
2456 }
2457
2458 static NTSTATUS vfswrap_durable_disconnect(struct vfs_handle_struct *handle,
2459 struct files_struct *fsp,
2460 const DATA_BLOB old_cookie,
2461 TALLOC_CTX *mem_ctx,
2462 DATA_BLOB *new_cookie)
2463 {
2464 return vfs_default_durable_disconnect(fsp, old_cookie, mem_ctx,
2465 new_cookie);
2466 }
2467
2468 static NTSTATUS vfswrap_durable_reconnect(struct vfs_handle_struct *handle,
2469 struct smb_request *smb1req,
2470 struct smbXsrv_open *op,
2471 const DATA_BLOB old_cookie,
2472 TALLOC_CTX *mem_ctx,
2473 struct files_struct **fsp,
2474 DATA_BLOB *new_cookie)
2475 {
2476 return vfs_default_durable_reconnect(handle->conn, smb1req, op,
2477 old_cookie, mem_ctx,
2478 fsp, new_cookie);
2479 }
2480
2481 static struct vfs_fn_pointers vfs_default_fns = {
2482 /* Disk operations */
2483
2484 .connect_fn = vfswrap_connect,
2485 .disconnect_fn = vfswrap_disconnect,
2486 .disk_free_fn = vfswrap_disk_free,
2487 .get_quota_fn = vfswrap_get_quota,
2488 .set_quota_fn = vfswrap_set_quota,
2489 .get_shadow_copy_data_fn = vfswrap_get_shadow_copy_data,
2490 .statvfs_fn = vfswrap_statvfs,
2491 .fs_capabilities_fn = vfswrap_fs_capabilities,
2492 .get_dfs_referrals_fn = vfswrap_get_dfs_referrals,
2493
2494 /* Directory operations */
2495
2496 .opendir_fn = vfswrap_opendir,
2497 .fdopendir_fn = vfswrap_fdopendir,
2498 .readdir_fn = vfswrap_readdir,
2499 .seekdir_fn = vfswrap_seekdir,
2500 .telldir_fn = vfswrap_telldir,
2501 .rewind_dir_fn = vfswrap_rewinddir,
2502 .mkdir_fn = vfswrap_mkdir,
2503 .rmdir_fn = vfswrap_rmdir,
2504 .closedir_fn = vfswrap_closedir,
2505 .init_search_op_fn = vfswrap_init_search_op,
2506
2507 /* File operations */
2508
2509 .open_fn = vfswrap_open,
2510 .create_file_fn = vfswrap_create_file,
2511 .close_fn = vfswrap_close,
2512 .read_fn = vfswrap_read,
2513 .pread_fn = vfswrap_pread,
2514 .pread_send_fn = vfswrap_pread_send,
2515 .pread_recv_fn = vfswrap_asys_ssize_t_recv,
2516 .write_fn = vfswrap_write,
2517 .pwrite_fn = vfswrap_pwrite,
2518 .pwrite_send_fn = vfswrap_pwrite_send,
2519 .pwrite_recv_fn = vfswrap_asys_ssize_t_recv,
2520 .lseek_fn = vfswrap_lseek,
2521 .sendfile_fn = vfswrap_sendfile,
2522 .recvfile_fn = vfswrap_recvfile,
2523 .rename_fn = vfswrap_rename,
2524 .fsync_fn = vfswrap_fsync,
2525 .fsync_send_fn = vfswrap_fsync_send,
2526 .fsync_recv_fn = vfswrap_asys_int_recv,
2527 .stat_fn = vfswrap_stat,
2528 .fstat_fn = vfswrap_fstat,
2529 .lstat_fn = vfswrap_lstat,
2530 .get_alloc_size_fn = vfswrap_get_alloc_size,
2531 .unlink_fn = vfswrap_unlink,
2532 .chmod_fn = vfswrap_chmod,
2533 .fchmod_fn = vfswrap_fchmod,
2534 .chown_fn = vfswrap_chown,
2535 .fchown_fn = vfswrap_fchown,
2536 .lchown_fn = vfswrap_lchown,
2537 .chdir_fn = vfswrap_chdir,
2538 .getwd_fn = vfswrap_getwd,
2539 .ntimes_fn = vfswrap_ntimes,
2540 .ftruncate_fn = vfswrap_ftruncate,
2541 .fallocate_fn = vfswrap_fallocate,
2542 .lock_fn = vfswrap_lock,
2543 .kernel_flock_fn = vfswrap_kernel_flock,
2544 .linux_setlease_fn = vfswrap_linux_setlease,
2545 .getlock_fn = vfswrap_getlock,
2546 .symlink_fn = vfswrap_symlink,
2547 .readlink_fn = vfswrap_readlink,
2548 .link_fn = vfswrap_link,
2549 .mknod_fn = vfswrap_mknod,
2550 .realpath_fn = vfswrap_realpath,
2551 .notify_watch_fn = vfswrap_notify_watch,
2552 .chflags_fn = vfswrap_chflags,
2553 .file_id_create_fn = vfswrap_file_id_create,
2554 .streaminfo_fn = vfswrap_streaminfo,
2555 .get_real_filename_fn = vfswrap_get_real_filename,
2556 .connectpath_fn = vfswrap_connectpath,
2557 .brl_lock_windows_fn = vfswrap_brl_lock_windows,
2558 .brl_unlock_windows_fn = vfswrap_brl_unlock_windows,
2559 .brl_cancel_windows_fn = vfswrap_brl_cancel_windows,
2560 .strict_lock_fn = vfswrap_strict_lock,
2561 .strict_unlock_fn = vfswrap_strict_unlock,
2562 .translate_name_fn = vfswrap_translate_name,
2563 .fsctl_fn = vfswrap_fsctl,
2564 .copy_chunk_send_fn = vfswrap_copy_chunk_send,
2565 .copy_chunk_recv_fn = vfswrap_copy_chunk_recv,
2566
2567 /* NT ACL operations. */
2568
2569 .fget_nt_acl_fn = vfswrap_fget_nt_acl,
2570 .get_nt_acl_fn = vfswrap_get_nt_acl,
2571 .fset_nt_acl_fn = vfswrap_fset_nt_acl,
2572 .audit_file_fn = vfswrap_audit_file,
2573
2574 /* POSIX ACL operations. */
2575
2576 .chmod_acl_fn = vfswrap_chmod_acl,
2577 .fchmod_acl_fn = vfswrap_fchmod_acl,
2578
2579 .sys_acl_get_file_fn = vfswrap_sys_acl_get_file,
2580 .sys_acl_get_fd_fn = vfswrap_sys_acl_get_fd,
2581 .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
2582 .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
2583 .sys_acl_set_file_fn = vfswrap_sys_acl_set_file,
2584 .sys_acl_set_fd_fn = vfswrap_sys_acl_set_fd,
2585 .sys_acl_delete_def_file_fn = vfswrap_sys_acl_delete_def_file,
2586
2587 /* EA operations. */
2588 .getxattr_fn = vfswrap_getxattr,
2589 .fgetxattr_fn = vfswrap_fgetxattr,
2590 .listxattr_fn = vfswrap_listxattr,
2591 .flistxattr_fn = vfswrap_flistxattr,
2592 .removexattr_fn = vfswrap_removexattr,
2593 .fremovexattr_fn = vfswrap_fremovexattr,
2594 .setxattr_fn = vfswrap_setxattr,
2595 .fsetxattr_fn = vfswrap_fsetxattr,
2596
2597 /* aio operations */
2598 .aio_force_fn = vfswrap_aio_force,
2599
2600 /* offline operations */
2601 .is_offline_fn = vfswrap_is_offline,
2602 .set_offline_fn = vfswrap_set_offline,
2603
2604 /* durable handle operations */
2605 .durable_cookie_fn = vfswrap_durable_cookie,
2606 .durable_disconnect_fn = vfswrap_durable_disconnect,
2607 .durable_reconnect_fn = vfswrap_durable_reconnect,
2608 };
2609
2610 NTSTATUS vfs_default_init(void);
2611 NTSTATUS vfs_default_init(void)
2612 {
2613 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
2614 DEFAULT_VFS_MODULE_NAME, &vfs_default_fns);
2615 }
2616
2617
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