source: vendor/3.5.9/source3/modules/vfs_default.c

Last change on this file was 594, checked in by Herwig Bauernfeind, 14 years ago

Samba 3.5: Update vendor to version 3.5.8
File size: 48.6 KB
Line 
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
23#undef DBGC_CLASS
24#define DBGC_CLASS DBGC_VFS
25
26/* Check for NULL pointer parameters in vfswrap_* functions */
27
28/* We don't want to have NULL function pointers lying around. Someone
29 is sure to try and execute them. These stubs are used to prevent
30 this possibility. */
31
32static int vfswrap_connect(vfs_handle_struct *handle, const char *service, const char *user)
33{
34 return 0; /* Return >= 0 for success */
35}
36
37static void vfswrap_disconnect(vfs_handle_struct *handle)
38{
39}
40
41/* Disk operations */
42
43static uint64_t vfswrap_disk_free(vfs_handle_struct *handle, const char *path, bool small_query, uint64_t *bsize,
44 uint64_t *dfree, uint64_t *dsize)
45{
46 uint64_t result;
47
48 result = sys_disk_free(handle->conn, path, small_query, bsize, dfree, dsize);
49 return result;
50}
51
52static int vfswrap_get_quota(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
53{
54#ifdef HAVE_SYS_QUOTAS
55 int result;
56
57 START_PROFILE(syscall_get_quota);
58 result = sys_get_quota(handle->conn->connectpath, qtype, id, qt);
59 END_PROFILE(syscall_get_quota);
60 return result;
61#else
62 errno = ENOSYS;
63 return -1;
64#endif
65}
66
67static int vfswrap_set_quota(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
68{
69#ifdef HAVE_SYS_QUOTAS
70 int result;
71
72 START_PROFILE(syscall_set_quota);
73 result = sys_set_quota(handle->conn->connectpath, qtype, id, qt);
74 END_PROFILE(syscall_set_quota);
75 return result;
76#else
77 errno = ENOSYS;
78 return -1;
79#endif
80}
81
82static int vfswrap_get_shadow_copy_data(struct vfs_handle_struct *handle, struct files_struct *fsp, SHADOW_COPY_DATA *shadow_copy_data, bool labels)
83{
84 errno = ENOSYS;
85 return -1; /* Not implemented. */
86}
87
88static int vfswrap_statvfs(struct vfs_handle_struct *handle, const char *path, vfs_statvfs_struct *statbuf)
89{
90 return sys_statvfs(path, statbuf);
91}
92
93static uint32_t vfswrap_fs_capabilities(struct vfs_handle_struct *handle,
94 enum timestamp_set_resolution *p_ts_res)
95{
96 connection_struct *conn = handle->conn;
97 uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
98 struct smb_filename *smb_fname_cpath = NULL;
99 NTSTATUS status;
100 int ret = -1;
101
102#if defined(DARWINOS)
103 struct vfs_statvfs_struct statbuf;
104 ZERO_STRUCT(statbuf);
105 sys_statvfs(conn->connectpath, &statbuf);
106 caps = statbuf.FsCapabilities;
107#endif
108
109 *p_ts_res = TIMESTAMP_SET_SECONDS;
110
111 /* Work out what timestamp resolution we can
112 * use when setting a timestamp. */
113
114 status = create_synthetic_smb_fname(talloc_tos(),
115 conn->connectpath,
116 NULL,
117 NULL,
118 &smb_fname_cpath);
119 if (!NT_STATUS_IS_OK(status)) {
120 return caps;
121 }
122
123 ret = SMB_VFS_STAT(conn, smb_fname_cpath);
124 if (ret == -1) {
125 TALLOC_FREE(smb_fname_cpath);
126 return caps;
127 }
128
129 if (smb_fname_cpath->st.st_ex_mtime.tv_nsec ||
130 smb_fname_cpath->st.st_ex_atime.tv_nsec ||
131 smb_fname_cpath->st.st_ex_ctime.tv_nsec) {
132 /* If any of the normal UNIX directory timestamps
133 * have a non-zero tv_nsec component assume
134 * we might be able to set sub-second timestamps.
135 * See what filetime set primitives we have.
136 */
137#if defined(HAVE_UTIMENSAT)
138 *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
139#elif defined(HAVE_UTIMES)
140 /* utimes allows msec timestamps to be set. */
141 *p_ts_res = TIMESTAMP_SET_MSEC;
142#elif defined(HAVE_UTIME)
143 /* utime only allows sec timestamps to be set. */
144 *p_ts_res = TIMESTAMP_SET_SECONDS;
145#endif
146
147 DEBUG(10,("vfswrap_fs_capabilities: timestamp "
148 "resolution of %s "
149 "available on share %s, directory %s\n",
150 *p_ts_res == TIMESTAMP_SET_MSEC ? "msec" : "sec",
151 lp_servicename(conn->params->service),
152 conn->connectpath ));
153 }
154 TALLOC_FREE(smb_fname_cpath);
155 return caps;
156}
157
158/* Directory operations */
159
160static SMB_STRUCT_DIR *vfswrap_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
161{
162 SMB_STRUCT_DIR *result;
163
164 START_PROFILE(syscall_opendir);
165 result = sys_opendir(fname);
166 END_PROFILE(syscall_opendir);
167 return result;
168}
169
170static SMB_STRUCT_DIRENT *vfswrap_readdir(vfs_handle_struct *handle,
171 SMB_STRUCT_DIR *dirp,
172 SMB_STRUCT_STAT *sbuf)
173{
174 SMB_STRUCT_DIRENT *result;
175
176 START_PROFILE(syscall_readdir);
177 result = sys_readdir(dirp);
178 /* Default Posix readdir() does not give us stat info.
179 * Set to invalid to indicate we didn't return this info. */
180 if (sbuf)
181 SET_STAT_INVALID(*sbuf);
182 END_PROFILE(syscall_readdir);
183 return result;
184}
185
186static void vfswrap_seekdir(vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp, long offset)
187{
188 START_PROFILE(syscall_seekdir);
189 sys_seekdir(dirp, offset);
190 END_PROFILE(syscall_seekdir);
191}
192
193static long vfswrap_telldir(vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp)
194{
195 long result;
196 START_PROFILE(syscall_telldir);
197 result = sys_telldir(dirp);
198 END_PROFILE(syscall_telldir);
199 return result;
200}
201
202static void vfswrap_rewinddir(vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp)
203{
204 START_PROFILE(syscall_rewinddir);
205 sys_rewinddir(dirp);
206 END_PROFILE(syscall_rewinddir);
207}
208
209static int vfswrap_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode)
210{
211 int result;
212 bool has_dacl = False;
213 char *parent = NULL;
214
215 START_PROFILE(syscall_mkdir);
216
217 if (lp_inherit_acls(SNUM(handle->conn))
218 && parent_dirname(talloc_tos(), path, &parent, NULL)
219 && (has_dacl = directory_has_default_acl(handle->conn, parent)))
220 mode = (0777 & lp_dir_mask(SNUM(handle->conn)));
221
222 TALLOC_FREE(parent);
223
224 result = mkdir(path, mode);
225
226 if (result == 0 && !has_dacl) {
227 /*
228 * We need to do this as the default behavior of POSIX ACLs
229 * is to set the mask to be the requested group permission
230 * bits, not the group permission bits to be the requested
231 * group permission bits. This is not what we want, as it will
232 * mess up any inherited ACL bits that were set. JRA.
233 */
234 int saved_errno = errno; /* We may get ENOSYS */
235 if ((SMB_VFS_CHMOD_ACL(handle->conn, path, mode) == -1) && (errno == ENOSYS))
236 errno = saved_errno;
237 }
238
239 END_PROFILE(syscall_mkdir);
240 return result;
241}
242
243static int vfswrap_rmdir(vfs_handle_struct *handle, const char *path)
244{
245 int result;
246
247 START_PROFILE(syscall_rmdir);
248 result = rmdir(path);
249 END_PROFILE(syscall_rmdir);
250 return result;
251}
252
253static int vfswrap_closedir(vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp)
254{
255 int result;
256
257 START_PROFILE(syscall_closedir);
258 result = sys_closedir(dirp);
259 END_PROFILE(syscall_closedir);
260 return result;
261}
262
263static void vfswrap_init_search_op(vfs_handle_struct *handle,
264 SMB_STRUCT_DIR *dirp)
265{
266 /* Default behavior is a NOOP */
267}
268
269/* File operations */
270
271static int vfswrap_open(vfs_handle_struct *handle,
272 struct smb_filename *smb_fname,
273 files_struct *fsp, int flags, mode_t mode)
274{
275 int result = -1;
276
277 START_PROFILE(syscall_open);
278
279 if (smb_fname->stream_name) {
280 errno = ENOENT;
281 goto out;
282 }
283
284 result = sys_open(smb_fname->base_name, flags, mode);
285 out:
286 END_PROFILE(syscall_open);
287 return result;
288}
289
290static NTSTATUS vfswrap_create_file(vfs_handle_struct *handle,
291 struct smb_request *req,
292 uint16_t root_dir_fid,
293 struct smb_filename *smb_fname,
294 uint32_t access_mask,
295 uint32_t share_access,
296 uint32_t create_disposition,
297 uint32_t create_options,
298 uint32_t file_attributes,
299 uint32_t oplock_request,
300 uint64_t allocation_size,
301 struct security_descriptor *sd,
302 struct ea_list *ea_list,
303 files_struct **result,
304 int *pinfo)
305{
306 return create_file_default(handle->conn, req, root_dir_fid, smb_fname,
307 access_mask, share_access,
308 create_disposition, create_options,
309 file_attributes, oplock_request,
310 allocation_size, sd, ea_list, result,
311 pinfo);
312}
313
314static int vfswrap_close(vfs_handle_struct *handle, files_struct *fsp)
315{
316 int result;
317
318 START_PROFILE(syscall_close);
319 result = fd_close_posix(fsp);
320 END_PROFILE(syscall_close);
321 return result;
322}
323
324static ssize_t vfswrap_read(vfs_handle_struct *handle, files_struct *fsp, void *data, size_t n)
325{
326 ssize_t result;
327
328 START_PROFILE_BYTES(syscall_read, n);
329 result = sys_read(fsp->fh->fd, data, n);
330 END_PROFILE(syscall_read);
331 return result;
332}
333
334static ssize_t vfswrap_pread(vfs_handle_struct *handle, files_struct *fsp, void *data,
335 size_t n, SMB_OFF_T offset)
336{
337 ssize_t result;
338
339#if defined(HAVE_PREAD) || defined(HAVE_PREAD64)
340 START_PROFILE_BYTES(syscall_pread, n);
341 result = sys_pread(fsp->fh->fd, data, n, offset);
342 END_PROFILE(syscall_pread);
343
344 if (result == -1 && errno == ESPIPE) {
345 /* Maintain the fiction that pipes can be seeked (sought?) on. */
346 result = SMB_VFS_READ(fsp, data, n);
347 fsp->fh->pos = 0;
348 }
349
350#else /* HAVE_PREAD */
351 SMB_OFF_T curr;
352 int lerrno;
353
354 curr = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
355 if (curr == -1 && errno == ESPIPE) {
356 /* Maintain the fiction that pipes can be seeked (sought?) on. */
357 result = SMB_VFS_READ(fsp, data, n);
358 fsp->fh->pos = 0;
359 return result;
360 }
361
362 if (SMB_VFS_LSEEK(fsp, offset, SEEK_SET) == -1) {
363 return -1;
364 }
365
366 errno = 0;
367 result = SMB_VFS_READ(fsp, data, n);
368 lerrno = errno;
369
370 SMB_VFS_LSEEK(fsp, curr, SEEK_SET);
371 errno = lerrno;
372
373#endif /* HAVE_PREAD */
374
375 return result;
376}
377
378static ssize_t vfswrap_write(vfs_handle_struct *handle, files_struct *fsp, const void *data, size_t n)
379{
380 ssize_t result;
381
382 START_PROFILE_BYTES(syscall_write, n);
383 result = sys_write(fsp->fh->fd, data, n);
384 END_PROFILE(syscall_write);
385 return result;
386}
387
388static ssize_t vfswrap_pwrite(vfs_handle_struct *handle, files_struct *fsp, const void *data,
389 size_t n, SMB_OFF_T offset)
390{
391 ssize_t result;
392
393#if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
394 START_PROFILE_BYTES(syscall_pwrite, n);
395 result = sys_pwrite(fsp->fh->fd, data, n, offset);
396 END_PROFILE(syscall_pwrite);
397
398 if (result == -1 && errno == ESPIPE) {
399 /* Maintain the fiction that pipes can be sought on. */
400 result = SMB_VFS_WRITE(fsp, data, n);
401 }
402
403#else /* HAVE_PWRITE */
404 SMB_OFF_T curr;
405 int lerrno;
406
407 curr = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
408 if (curr == -1) {
409 return -1;
410 }
411
412 if (SMB_VFS_LSEEK(fsp, offset, SEEK_SET) == -1) {
413 return -1;
414 }
415
416 result = SMB_VFS_WRITE(fsp, data, n);
417 lerrno = errno;
418
419 SMB_VFS_LSEEK(fsp, curr, SEEK_SET);
420 errno = lerrno;
421
422#endif /* HAVE_PWRITE */
423
424 return result;
425}
426
427static SMB_OFF_T vfswrap_lseek(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T offset, int whence)
428{
429 SMB_OFF_T result = 0;
430
431 START_PROFILE(syscall_lseek);
432
433 /* Cope with 'stat' file opens. */
434 if (fsp->fh->fd != -1)
435 result = sys_lseek(fsp->fh->fd, offset, whence);
436
437 /*
438 * We want to maintain the fiction that we can seek
439 * on a fifo for file system purposes. This allows
440 * people to set up UNIX fifo's that feed data to Windows
441 * applications. JRA.
442 */
443
444 if((result == -1) && (errno == ESPIPE)) {
445 result = 0;
446 errno = 0;
447 }
448
449 END_PROFILE(syscall_lseek);
450 return result;
451}
452
453static ssize_t vfswrap_sendfile(vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *hdr,
454 SMB_OFF_T offset, size_t n)
455{
456 ssize_t result;
457
458 START_PROFILE_BYTES(syscall_sendfile, n);
459 result = sys_sendfile(tofd, fromfsp->fh->fd, hdr, offset, n);
460 END_PROFILE(syscall_sendfile);
461 return result;
462}
463
464static ssize_t vfswrap_recvfile(vfs_handle_struct *handle,
465 int fromfd,
466 files_struct *tofsp,
467 SMB_OFF_T offset,
468 size_t n)
469{
470 ssize_t result;
471
472 START_PROFILE_BYTES(syscall_recvfile, n);
473 result = sys_recvfile(fromfd, tofsp->fh->fd, offset, n);
474 END_PROFILE(syscall_recvfile);
475 return result;
476}
477
478/*********************************************************
479 For rename across filesystems Patch from Warren Birnbaum
480 <warrenb@hpcvscdp.cv.hp.com>
481**********************************************************/
482
483static int copy_reg(const char *source, const char *dest)
484{
485 SMB_STRUCT_STAT source_stats;
486 int saved_errno;
487 int ifd = -1;
488 int ofd = -1;
489
490 if (sys_lstat(source, &source_stats, false) == -1)
491 return -1;
492
493 if (!S_ISREG (source_stats.st_ex_mode))
494 return -1;
495
496 if((ifd = sys_open (source, O_RDONLY, 0)) < 0)
497 return -1;
498
499 if (unlink (dest) && errno != ENOENT)
500 return -1;
501
502#ifdef O_NOFOLLOW
503 if((ofd = sys_open (dest, O_WRONLY | O_CREAT | O_TRUNC | O_NOFOLLOW, 0600)) < 0 )
504#else
505 if((ofd = sys_open (dest, O_WRONLY | O_CREAT | O_TRUNC , 0600)) < 0 )
506#endif
507 goto err;
508
509 if (transfer_file(ifd, ofd, (size_t)-1) == -1)
510 goto err;
511
512 /*
513 * Try to preserve ownership. For non-root it might fail, but that's ok.
514 * But root probably wants to know, e.g. if NFS disallows it.
515 */
516
517#ifdef HAVE_FCHOWN
518 if ((fchown(ofd, source_stats.st_ex_uid, source_stats.st_ex_gid) == -1) && (errno != EPERM))
519#else
520 if ((chown(dest, source_stats.st_ex_uid, source_stats.st_ex_gid) == -1) && (errno != EPERM))
521#endif
522 goto err;
523
524 /*
525 * fchown turns off set[ug]id bits for non-root,
526 * so do the chmod last.
527 */
528
529#if defined(HAVE_FCHMOD)
530 if (fchmod (ofd, source_stats.st_ex_mode & 07777))
531#else
532 if (chmod (dest, source_stats.st_ex_mode & 07777))
533#endif
534 goto err;
535
536 if (close (ifd) == -1)
537 goto err;
538
539 if (close (ofd) == -1)
540 return -1;
541
542 /* Try to copy the old file's modtime and access time. */
543#if defined(HAVE_UTIMENSAT)
544 {
545 struct timespec ts[2];
546
547 ts[0] = source_stats.st_ex_atime;
548 ts[1] = source_stats.st_ex_mtime;
549 utimensat(AT_FDCWD, dest, ts, AT_SYMLINK_NOFOLLOW);
550 }
551#elif defined(HAVE_UTIMES)
552 {
553 struct timeval tv[2];
554
555 tv[0] = convert_timespec_to_timeval(source_stats.st_ex_atime);
556 tv[1] = convert_timespec_to_timeval(source_stats.st_ex_mtime);
557#ifdef HAVE_LUTIMES
558 lutimes(dest, tv);
559#else
560 utimes(dest, tv);
561#endif
562 }
563#elif defined(HAVE_UTIME)
564 {
565 struct utimbuf tv;
566
567 tv.actime = convert_timespec_to_time_t(source_stats.st_ex_atime);
568 tv.modtime = convert_timespec_to_time_t(source_stats.st_ex_mtime);
569 utime(dest, &tv);
570 }
571#endif
572
573 if (unlink (source) == -1)
574 return -1;
575
576 return 0;
577
578 err:
579
580 saved_errno = errno;
581 if (ifd != -1)
582 close(ifd);
583 if (ofd != -1)
584 close(ofd);
585 errno = saved_errno;
586 return -1;
587}
588
589static int vfswrap_rename(vfs_handle_struct *handle,
590 const struct smb_filename *smb_fname_src,
591 const struct smb_filename *smb_fname_dst)
592{
593 int result = -1;
594
595 START_PROFILE(syscall_rename);
596
597 if (smb_fname_src->stream_name || smb_fname_dst->stream_name) {
598 errno = ENOENT;
599 goto out;
600 }
601
602 result = rename(smb_fname_src->base_name, smb_fname_dst->base_name);
603 if ((result == -1) && (errno == EXDEV)) {
604 /* Rename across filesystems needed. */
605 result = copy_reg(smb_fname_src->base_name,
606 smb_fname_dst->base_name);
607 }
608
609 out:
610 END_PROFILE(syscall_rename);
611 return result;
612}
613
614static int vfswrap_fsync(vfs_handle_struct *handle, files_struct *fsp)
615{
616#ifdef HAVE_FSYNC
617 int result;
618
619 START_PROFILE(syscall_fsync);
620 result = fsync(fsp->fh->fd);
621 END_PROFILE(syscall_fsync);
622 return result;
623#else
624 return 0;
625#endif
626}
627
628static int vfswrap_stat(vfs_handle_struct *handle,
629 struct smb_filename *smb_fname)
630{
631 int result = -1;
632
633 START_PROFILE(syscall_stat);
634
635 if (smb_fname->stream_name) {
636 errno = ENOENT;
637 goto out;
638 }
639
640 result = sys_stat(smb_fname->base_name, &smb_fname->st,
641 lp_fake_dir_create_times(SNUM(handle->conn)));
642 out:
643 END_PROFILE(syscall_stat);
644 return result;
645}
646
647static int vfswrap_fstat(vfs_handle_struct *handle, files_struct *fsp, SMB_STRUCT_STAT *sbuf)
648{
649 int result;
650
651 START_PROFILE(syscall_fstat);
652 result = sys_fstat(fsp->fh->fd,
653 sbuf, lp_fake_dir_create_times(SNUM(handle->conn)));
654 END_PROFILE(syscall_fstat);
655 return result;
656}
657
658static int vfswrap_lstat(vfs_handle_struct *handle,
659 struct smb_filename *smb_fname)
660{
661 int result = -1;
662
663 START_PROFILE(syscall_lstat);
664
665 if (smb_fname->stream_name) {
666 errno = ENOENT;
667 goto out;
668 }
669
670 result = sys_lstat(smb_fname->base_name, &smb_fname->st,
671 lp_fake_dir_create_times(SNUM(handle->conn)));
672 out:
673 END_PROFILE(syscall_lstat);
674 return result;
675}
676
677static NTSTATUS vfswrap_translate_name(struct vfs_handle_struct *handle,
678 const char *name,
679 enum vfs_translate_direction direction,
680 TALLOC_CTX *mem_ctx,
681 char **mapped_name)
682{
683 return NT_STATUS_NONE_MAPPED;
684}
685
686/********************************************************************
687 Given a stat buffer return the allocated size on disk, taking into
688 account sparse files.
689********************************************************************/
690static uint64_t vfswrap_get_alloc_size(vfs_handle_struct *handle,
691 struct files_struct *fsp,
692 const SMB_STRUCT_STAT *sbuf)
693{
694 uint64_t result;
695
696 START_PROFILE(syscall_get_alloc_size);
697
698 if(S_ISDIR(sbuf->st_ex_mode)) {
699 result = 0;
700 goto out;
701 }
702
703#if defined(HAVE_STAT_ST_BLOCKS) && defined(STAT_ST_BLOCKSIZE)
704 result = (uint64_t)STAT_ST_BLOCKSIZE * (uint64_t)sbuf->st_ex_blocks;
705#else
706 result = get_file_size_stat(sbuf);
707#endif
708
709 if (fsp && fsp->initial_allocation_size)
710 result = MAX(result,fsp->initial_allocation_size);
711
712 result = smb_roundup(handle->conn, result);
713
714 out:
715 END_PROFILE(syscall_get_alloc_size);
716 return result;
717}
718
719static int vfswrap_unlink(vfs_handle_struct *handle,
720 const struct smb_filename *smb_fname)
721{
722 int result = -1;
723
724 START_PROFILE(syscall_unlink);
725
726 if (smb_fname->stream_name) {
727 errno = ENOENT;
728 goto out;
729 }
730 result = unlink(smb_fname->base_name);
731
732 out:
733 END_PROFILE(syscall_unlink);
734 return result;
735}
736
737static int vfswrap_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
738{
739 int result;
740
741 START_PROFILE(syscall_chmod);
742
743 /*
744 * We need to do this due to the fact that the default POSIX ACL
745 * chmod modifies the ACL *mask* for the group owner, not the
746 * group owner bits directly. JRA.
747 */
748
749
750 {
751 int saved_errno = errno; /* We might get ENOSYS */
752 if ((result = SMB_VFS_CHMOD_ACL(handle->conn, path, mode)) == 0) {
753 END_PROFILE(syscall_chmod);
754 return result;
755 }
756 /* Error - return the old errno. */
757 errno = saved_errno;
758 }
759
760 result = chmod(path, mode);
761 END_PROFILE(syscall_chmod);
762 return result;
763}
764
765static int vfswrap_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
766{
767 int result;
768
769 START_PROFILE(syscall_fchmod);
770
771 /*
772 * We need to do this due to the fact that the default POSIX ACL
773 * chmod modifies the ACL *mask* for the group owner, not the
774 * group owner bits directly. JRA.
775 */
776
777 {
778 int saved_errno = errno; /* We might get ENOSYS */
779 if ((result = SMB_VFS_FCHMOD_ACL(fsp, mode)) == 0) {
780 END_PROFILE(syscall_fchmod);
781 return result;
782 }
783 /* Error - return the old errno. */
784 errno = saved_errno;
785 }
786
787#if defined(HAVE_FCHMOD)
788 result = fchmod(fsp->fh->fd, mode);
789#else
790 result = -1;
791 errno = ENOSYS;
792#endif
793
794 END_PROFILE(syscall_fchmod);
795 return result;
796}
797
798static int vfswrap_chown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
799{
800 int result;
801
802 START_PROFILE(syscall_chown);
803 result = chown(path, uid, gid);
804 END_PROFILE(syscall_chown);
805 return result;
806}
807
808static int vfswrap_fchown(vfs_handle_struct *handle, files_struct *fsp, uid_t uid, gid_t gid)
809{
810#ifdef HAVE_FCHOWN
811 int result;
812
813 START_PROFILE(syscall_fchown);
814 result = fchown(fsp->fh->fd, uid, gid);
815 END_PROFILE(syscall_fchown);
816 return result;
817#else
818 errno = ENOSYS;
819 return -1;
820#endif
821}
822
823static int vfswrap_lchown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
824{
825 int result;
826
827 START_PROFILE(syscall_lchown);
828 result = lchown(path, uid, gid);
829 END_PROFILE(syscall_lchown);
830 return result;
831}
832
833static int vfswrap_chdir(vfs_handle_struct *handle, const char *path)
834{
835 int result;
836
837 START_PROFILE(syscall_chdir);
838 result = chdir(path);
839 END_PROFILE(syscall_chdir);
840 return result;
841}
842
843static char *vfswrap_getwd(vfs_handle_struct *handle, char *path)
844{
845 char *result;
846
847 START_PROFILE(syscall_getwd);
848 result = sys_getwd(path);
849 END_PROFILE(syscall_getwd);
850 return result;
851}
852
853/*********************************************************************
854 nsec timestamp resolution call. Convert down to whatever the underlying
855 system will support.
856**********************************************************************/
857
858static int vfswrap_ntimes(vfs_handle_struct *handle,
859 const struct smb_filename *smb_fname,
860 struct smb_file_time *ft)
861{
862 int result = -1;
863
864 START_PROFILE(syscall_ntimes);
865
866 if (smb_fname->stream_name) {
867 errno = ENOENT;
868 goto out;
869 }
870
871 if (null_timespec(ft->atime)) {
872 ft->atime= smb_fname->st.st_ex_atime;
873 }
874
875 if (null_timespec(ft->mtime)) {
876 ft->mtime = smb_fname->st.st_ex_mtime;
877 }
878
879 if (!null_timespec(ft->create_time)) {
880 set_create_timespec_ea(handle->conn,
881 smb_fname,
882 ft->create_time);
883 }
884
885 if ((timespec_compare(&ft->atime,
886 &smb_fname->st.st_ex_atime) == 0) &&
887 (timespec_compare(&ft->mtime,
888 &smb_fname->st.st_ex_mtime) == 0)) {
889 return 0;
890 }
891
892#if defined(HAVE_UTIMENSAT)
893 if (ft != NULL) {
894 struct timespec ts[2];
895 ts[0] = ft->atime;
896 ts[1] = ft->mtime;
897 result = utimensat(AT_FDCWD, smb_fname->base_name, ts, 0);
898 } else {
899 result = utimensat(AT_FDCWD, smb_fname->base_name, NULL, 0);
900 }
901 if (!((result == -1) && (errno == ENOSYS))) {
902 goto out;
903 }
904#endif
905#if defined(HAVE_UTIMES)
906 if (ft != NULL) {
907 struct timeval tv[2];
908 tv[0] = convert_timespec_to_timeval(ft->atime);
909 tv[1] = convert_timespec_to_timeval(ft->mtime);
910 result = utimes(smb_fname->base_name, tv);
911 } else {
912 result = utimes(smb_fname->base_name, NULL);
913 }
914 if (!((result == -1) && (errno == ENOSYS))) {
915 goto out;
916 }
917#endif
918#if defined(HAVE_UTIME)
919 if (ft != NULL) {
920 struct utimbuf times;
921 times.actime = convert_timespec_to_time_t(ft->atime);
922 times.modtime = convert_timespec_to_time_t(ft->mtime);
923 result = utime(smb_fname->base_name, &times);
924 } else {
925 result = utime(smb_fname->base_name, NULL);
926 }
927 if (!((result == -1) && (errno == ENOSYS))) {
928 goto out;
929 }
930#endif
931 errno = ENOSYS;
932 result = -1;
933
934 out:
935 END_PROFILE(syscall_ntimes);
936 return result;
937}
938
939/*********************************************************************
940 A version of ftruncate that will write the space on disk if strict
941 allocate is set.
942**********************************************************************/
943
944static int strict_allocate_ftruncate(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T len)
945{
946 SMB_STRUCT_STAT st;
947 SMB_OFF_T currpos = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
948 unsigned char zero_space[4096];
949 SMB_OFF_T space_to_write;
950 uint64_t space_avail;
951 uint64_t bsize,dfree,dsize;
952 int ret;
953
954 if (currpos == -1)
955 return -1;
956
957 if (SMB_VFS_FSTAT(fsp, &st) == -1)
958 return -1;
959
960#ifdef S_ISFIFO
961 if (S_ISFIFO(st.st_ex_mode))
962 return 0;
963#endif
964
965 if (st.st_ex_size == len)
966 return 0;
967
968 /* Shrink - just ftruncate. */
969 if (st.st_ex_size > len)
970 return sys_ftruncate(fsp->fh->fd, len);
971
972 space_to_write = len - st.st_ex_size;
973
974 /* for allocation try posix_fallocate first. This can fail on some
975 platforms e.g. when the filesystem doesn't support it and no
976 emulation is being done by the libc (like on AIX with JFS1). In that
977 case we do our own emulation. posix_fallocate implementations can
978 return ENOTSUP or EINVAL in cases like that. */
979 ret = sys_posix_fallocate(fsp->fh->fd, st.st_ex_size, space_to_write);
980 if (ret == ENOSPC) {
981 errno = ENOSPC;
982 return -1;
983 }
984 if (ret == 0) {
985 return 0;
986 }
987 DEBUG(10,("strict_allocate_ftruncate: sys_posix_fallocate failed with "
988 "error %d. Falling back to slow manual allocation\n", ret));
989
990 /* available disk space is enough or not? */
991 space_avail = get_dfree_info(fsp->conn,
992 fsp->fsp_name->base_name, false,
993 &bsize,&dfree,&dsize);
994 /* space_avail is 1k blocks */
995 if (space_avail == (uint64_t)-1 ||
996 ((uint64_t)space_to_write/1024 > space_avail) ) {
997 errno = ENOSPC;
998 return -1;
999 }
1000
1001 /* Write out the real space on disk. */
1002 if (SMB_VFS_LSEEK(fsp, st.st_ex_size, SEEK_SET) != st.st_ex_size)
1003 return -1;
1004
1005 memset(zero_space, '\0', sizeof(zero_space));
1006 while ( space_to_write > 0) {
1007 SMB_OFF_T retlen;
1008 SMB_OFF_T current_len_to_write = MIN(sizeof(zero_space),space_to_write);
1009
1010 retlen = SMB_VFS_WRITE(fsp,(char *)zero_space,current_len_to_write);
1011 if (retlen <= 0)
1012 return -1;
1013
1014 space_to_write -= retlen;
1015 }
1016
1017 /* Seek to where we were */
1018 if (SMB_VFS_LSEEK(fsp, currpos, SEEK_SET) != currpos)
1019 return -1;
1020
1021 return 0;
1022}
1023
1024static int vfswrap_ftruncate(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T len)
1025{
1026 int result = -1;
1027 SMB_STRUCT_STAT st;
1028 char c = 0;
1029 SMB_OFF_T currpos;
1030
1031 START_PROFILE(syscall_ftruncate);
1032
1033 if (lp_strict_allocate(SNUM(fsp->conn))) {
1034 result = strict_allocate_ftruncate(handle, fsp, len);
1035 END_PROFILE(syscall_ftruncate);
1036 return result;
1037 }
1038
1039 /* we used to just check HAVE_FTRUNCATE_EXTEND and only use
1040 sys_ftruncate if the system supports it. Then I discovered that
1041 you can have some filesystems that support ftruncate
1042 expansion and some that don't! On Linux fat can't do
1043 ftruncate extend but ext2 can. */
1044
1045 result = sys_ftruncate(fsp->fh->fd, len);
1046 if (result == 0)
1047 goto done;
1048
1049 /* According to W. R. Stevens advanced UNIX prog. Pure 4.3 BSD cannot
1050 extend a file with ftruncate. Provide alternate implementation
1051 for this */
1052 currpos = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
1053 if (currpos == -1) {
1054 goto done;
1055 }
1056
1057 /* Do an fstat to see if the file is longer than the requested
1058 size in which case the ftruncate above should have
1059 succeeded or shorter, in which case seek to len - 1 and
1060 write 1 byte of zero */
1061 if (SMB_VFS_FSTAT(fsp, &st) == -1) {
1062 goto done;
1063 }
1064
1065#ifdef S_ISFIFO
1066 if (S_ISFIFO(st.st_ex_mode)) {
1067 result = 0;
1068 goto done;
1069 }
1070#endif
1071
1072 if (st.st_ex_size == len) {
1073 result = 0;
1074 goto done;
1075 }
1076
1077 if (st.st_ex_size > len) {
1078 /* the sys_ftruncate should have worked */
1079 goto done;
1080 }
1081
1082 if (SMB_VFS_LSEEK(fsp, len-1, SEEK_SET) != len -1)
1083 goto done;
1084
1085 if (SMB_VFS_WRITE(fsp, &c, 1)!=1)
1086 goto done;
1087
1088 /* Seek to where we were */
1089 if (SMB_VFS_LSEEK(fsp, currpos, SEEK_SET) != currpos)
1090 goto done;
1091 result = 0;
1092
1093 done:
1094
1095 END_PROFILE(syscall_ftruncate);
1096 return result;
1097}
1098
1099static bool vfswrap_lock(vfs_handle_struct *handle, files_struct *fsp, int op, SMB_OFF_T offset, SMB_OFF_T count, int type)
1100{
1101 bool result;
1102
1103 START_PROFILE(syscall_fcntl_lock);
1104 result = fcntl_lock(fsp->fh->fd, op, offset, count, type);
1105 END_PROFILE(syscall_fcntl_lock);
1106 return result;
1107}
1108
1109static int vfswrap_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
1110 uint32 share_mode, uint32 access_mask)
1111{
1112 START_PROFILE(syscall_kernel_flock);
1113 kernel_flock(fsp->fh->fd, share_mode, access_mask);
1114 END_PROFILE(syscall_kernel_flock);
1115 return 0;
1116}
1117
1118static bool vfswrap_getlock(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid)
1119{
1120 bool result;
1121
1122 START_PROFILE(syscall_fcntl_getlock);
1123 result = fcntl_getlock(fsp->fh->fd, poffset, pcount, ptype, ppid);
1124 END_PROFILE(syscall_fcntl_getlock);
1125 return result;
1126}
1127
1128static int vfswrap_linux_setlease(vfs_handle_struct *handle, files_struct *fsp,
1129 int leasetype)
1130{
1131 int result = -1;
1132
1133 START_PROFILE(syscall_linux_setlease);
1134
1135#ifdef HAVE_KERNEL_OPLOCKS_LINUX
1136 /* first set the signal handler */
1137 if(linux_set_lease_sighandler(fsp->fh->fd) == -1) {
1138 return -1;
1139 }
1140
1141 result = linux_setlease(fsp->fh->fd, leasetype);
1142#else
1143 errno = ENOSYS;
1144#endif
1145 END_PROFILE(syscall_linux_setlease);
1146 return result;
1147}
1148
1149static int vfswrap_symlink(vfs_handle_struct *handle, const char *oldpath, const char *newpath)
1150{
1151 int result;
1152
1153 START_PROFILE(syscall_symlink);
1154 result = symlink(oldpath, newpath);
1155 END_PROFILE(syscall_symlink);
1156 return result;
1157}
1158
1159static int vfswrap_readlink(vfs_handle_struct *handle, const char *path, char *buf, size_t bufsiz)
1160{
1161 int result;
1162
1163 START_PROFILE(syscall_readlink);
1164 result = readlink(path, buf, bufsiz);
1165 END_PROFILE(syscall_readlink);
1166 return result;
1167}
1168
1169static int vfswrap_link(vfs_handle_struct *handle, const char *oldpath, const char *newpath)
1170{
1171 int result;
1172
1173 START_PROFILE(syscall_link);
1174 result = link(oldpath, newpath);
1175 END_PROFILE(syscall_link);
1176 return result;
1177}
1178
1179static int vfswrap_mknod(vfs_handle_struct *handle, const char *pathname, mode_t mode, SMB_DEV_T dev)
1180{
1181 int result;
1182
1183 START_PROFILE(syscall_mknod);
1184 result = sys_mknod(pathname, mode, dev);
1185 END_PROFILE(syscall_mknod);
1186 return result;
1187}
1188
1189static char *vfswrap_realpath(vfs_handle_struct *handle, const char *path, char *resolved_path)
1190{
1191 char *result;
1192
1193 START_PROFILE(syscall_realpath);
1194 result = realpath(path, resolved_path);
1195 END_PROFILE(syscall_realpath);
1196 return result;
1197}
1198
1199static NTSTATUS vfswrap_notify_watch(vfs_handle_struct *vfs_handle,
1200 struct sys_notify_context *ctx,
1201 struct notify_entry *e,
1202 void (*callback)(struct sys_notify_context *ctx,
1203 void *private_data,
1204 struct notify_event *ev),
1205 void *private_data, void *handle)
1206{
1207 /*
1208 * So far inotify is the only supported default notify mechanism. If
1209 * another platform like the the BSD's or a proprietary Unix comes
1210 * along and wants another default, we can play the same trick we
1211 * played with Posix ACLs.
1212 *
1213 * Until that is the case, hard-code inotify here.
1214 */
1215#ifdef HAVE_INOTIFY
1216 if (lp_kernel_change_notify(ctx->conn->params)) {
1217 return inotify_watch(ctx, e, callback, private_data, handle);
1218 }
1219#endif
1220 /*
1221 * Do nothing, leave everything to notify_internal.c
1222 */
1223 return NT_STATUS_OK;
1224}
1225
1226static int vfswrap_chflags(vfs_handle_struct *handle, const char *path,
1227 unsigned int flags)
1228{
1229#ifdef HAVE_CHFLAGS
1230 return chflags(path, flags);
1231#else
1232 errno = ENOSYS;
1233 return -1;
1234#endif
1235}
1236
1237static struct file_id vfswrap_file_id_create(struct vfs_handle_struct *handle,
1238 const SMB_STRUCT_STAT *sbuf)
1239{
1240 struct file_id key;
1241
1242 /* the ZERO_STRUCT ensures padding doesn't break using the key as a
1243 * blob */
1244 ZERO_STRUCT(key);
1245
1246 key.devid = sbuf->st_ex_dev;
1247 key.inode = sbuf->st_ex_ino;
1248 /* key.extid is unused by default. */
1249
1250 return key;
1251}
1252
1253static NTSTATUS vfswrap_streaminfo(vfs_handle_struct *handle,
1254 struct files_struct *fsp,
1255 const char *fname,
1256 TALLOC_CTX *mem_ctx,
1257 unsigned int *pnum_streams,
1258 struct stream_struct **pstreams)
1259{
1260 SMB_STRUCT_STAT sbuf;
1261 unsigned int num_streams = 0;
1262 struct stream_struct *streams = NULL;
1263 int ret;
1264
1265 if ((fsp != NULL) && (fsp->is_directory)) {
1266 /*
1267 * No default streams on directories
1268 */
1269 goto done;
1270 }
1271
1272 if ((fsp != NULL) && (fsp->fh->fd != -1)) {
1273 ret = SMB_VFS_FSTAT(fsp, &sbuf);
1274 }
1275 else {
1276 struct smb_filename smb_fname;
1277
1278 ZERO_STRUCT(smb_fname);
1279 smb_fname.base_name = discard_const_p(char, fname);
1280
1281 if (lp_posix_pathnames()) {
1282 ret = SMB_VFS_LSTAT(handle->conn, &smb_fname);
1283 } else {
1284 ret = SMB_VFS_STAT(handle->conn, &smb_fname);
1285 }
1286 sbuf = smb_fname.st;
1287 }
1288
1289 if (ret == -1) {
1290 return map_nt_error_from_unix(errno);
1291 }
1292
1293 if (S_ISDIR(sbuf.st_ex_mode)) {
1294 goto done;
1295 }
1296
1297 streams = talloc(mem_ctx, struct stream_struct);
1298
1299 if (streams == NULL) {
1300 return NT_STATUS_NO_MEMORY;
1301 }
1302
1303 streams->size = sbuf.st_ex_size;
1304 streams->alloc_size = SMB_VFS_GET_ALLOC_SIZE(handle->conn, fsp, &sbuf);
1305
1306 streams->name = talloc_strdup(streams, "::$DATA");
1307 if (streams->name == NULL) {
1308 TALLOC_FREE(streams);
1309 return NT_STATUS_NO_MEMORY;
1310 }
1311
1312 num_streams = 1;
1313 done:
1314 *pnum_streams = num_streams;
1315 *pstreams = streams;
1316 return NT_STATUS_OK;
1317}
1318
1319static int vfswrap_get_real_filename(struct vfs_handle_struct *handle,
1320 const char *path,
1321 const char *name,
1322 TALLOC_CTX *mem_ctx,
1323 char **found_name)
1324{
1325 /*
1326 * Don't fall back to get_real_filename so callers can differentiate
1327 * between a full directory scan and an actual case-insensitive stat.
1328 */
1329 errno = EOPNOTSUPP;
1330 return -1;
1331}
1332
1333static const char *vfswrap_connectpath(struct vfs_handle_struct *handle,
1334 const char *fname)
1335{
1336 return handle->conn->connectpath;
1337}
1338
1339static NTSTATUS vfswrap_brl_lock_windows(struct vfs_handle_struct *handle,
1340 struct byte_range_lock *br_lck,
1341 struct lock_struct *plock,
1342 bool blocking_lock,
1343 struct blocking_lock_record *blr)
1344{
1345 SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
1346
1347 /* Note: blr is not used in the default implementation. */
1348 return brl_lock_windows_default(br_lck, plock, blocking_lock);
1349}
1350
1351static bool vfswrap_brl_unlock_windows(struct vfs_handle_struct *handle,
1352 struct messaging_context *msg_ctx,
1353 struct byte_range_lock *br_lck,
1354 const struct lock_struct *plock)
1355{
1356 SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
1357
1358 return brl_unlock_windows_default(msg_ctx, br_lck, plock);
1359}
1360
1361static bool vfswrap_brl_cancel_windows(struct vfs_handle_struct *handle,
1362 struct byte_range_lock *br_lck,
1363 struct lock_struct *plock,
1364 struct blocking_lock_record *blr)
1365{
1366 SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
1367
1368 /* Note: blr is not used in the default implementation. */
1369 return brl_lock_cancel_default(br_lck, plock);
1370}
1371
1372static bool vfswrap_strict_lock(struct vfs_handle_struct *handle,
1373 files_struct *fsp,
1374 struct lock_struct *plock)
1375{
1376 SMB_ASSERT(plock->lock_type == READ_LOCK ||
1377 plock->lock_type == WRITE_LOCK);
1378
1379 return strict_lock_default(fsp, plock);
1380}
1381
1382static void vfswrap_strict_unlock(struct vfs_handle_struct *handle,
1383 files_struct *fsp,
1384 struct lock_struct *plock)
1385{
1386 SMB_ASSERT(plock->lock_type == READ_LOCK ||
1387 plock->lock_type == WRITE_LOCK);
1388
1389 strict_unlock_default(fsp, plock);
1390}
1391
1392/* NT ACL operations. */
1393
1394static NTSTATUS vfswrap_fget_nt_acl(vfs_handle_struct *handle,
1395 files_struct *fsp,
1396 uint32 security_info, SEC_DESC **ppdesc)
1397{
1398 NTSTATUS result;
1399
1400 START_PROFILE(fget_nt_acl);
1401 result = posix_fget_nt_acl(fsp, security_info, ppdesc);
1402 END_PROFILE(fget_nt_acl);
1403 return result;
1404}
1405
1406static NTSTATUS vfswrap_get_nt_acl(vfs_handle_struct *handle,
1407 const char *name,
1408 uint32 security_info, SEC_DESC **ppdesc)
1409{
1410 NTSTATUS result;
1411
1412 START_PROFILE(get_nt_acl);
1413 result = posix_get_nt_acl(handle->conn, name, security_info, ppdesc);
1414 END_PROFILE(get_nt_acl);
1415 return result;
1416}
1417
1418static NTSTATUS vfswrap_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const SEC_DESC *psd)
1419{
1420 NTSTATUS result;
1421
1422 START_PROFILE(fset_nt_acl);
1423 result = set_nt_acl(fsp, security_info_sent, psd);
1424 END_PROFILE(fset_nt_acl);
1425 return result;
1426}
1427
1428static int vfswrap_chmod_acl(vfs_handle_struct *handle, const char *name, mode_t mode)
1429{
1430#ifdef HAVE_NO_ACL
1431 errno = ENOSYS;
1432 return -1;
1433#else
1434 int result;
1435
1436 START_PROFILE(chmod_acl);
1437 result = chmod_acl(handle->conn, name, mode);
1438 END_PROFILE(chmod_acl);
1439 return result;
1440#endif
1441}
1442
1443static int vfswrap_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
1444{
1445#ifdef HAVE_NO_ACL
1446 errno = ENOSYS;
1447 return -1;
1448#else
1449 int result;
1450
1451 START_PROFILE(fchmod_acl);
1452 result = fchmod_acl(fsp, mode);
1453 END_PROFILE(fchmod_acl);
1454 return result;
1455#endif
1456}
1457
1458static int vfswrap_sys_acl_get_entry(vfs_handle_struct *handle, SMB_ACL_T theacl, int entry_id, SMB_ACL_ENTRY_T *entry_p)
1459{
1460 return sys_acl_get_entry(theacl, entry_id, entry_p);
1461}
1462
1463static int vfswrap_sys_acl_get_tag_type(vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_TAG_T *tag_type_p)
1464{
1465 return sys_acl_get_tag_type(entry_d, tag_type_p);
1466}
1467
1468static int vfswrap_sys_acl_get_permset(vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_PERMSET_T *permset_p)
1469{
1470 return sys_acl_get_permset(entry_d, permset_p);
1471}
1472
1473static void * vfswrap_sys_acl_get_qualifier(vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d)
1474{
1475 return sys_acl_get_qualifier(entry_d);
1476}
1477
1478static SMB_ACL_T vfswrap_sys_acl_get_file(vfs_handle_struct *handle, const char *path_p, SMB_ACL_TYPE_T type)
1479{
1480 return sys_acl_get_file(handle, path_p, type);
1481}
1482
1483static SMB_ACL_T vfswrap_sys_acl_get_fd(vfs_handle_struct *handle, files_struct *fsp)
1484{
1485 return sys_acl_get_fd(handle, fsp);
1486}
1487
1488static int vfswrap_sys_acl_clear_perms(vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset)
1489{
1490 return sys_acl_clear_perms(permset);
1491}
1492
1493static int vfswrap_sys_acl_add_perm(vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm)
1494{
1495 return sys_acl_add_perm(permset, perm);
1496}
1497
1498static char * vfswrap_sys_acl_to_text(vfs_handle_struct *handle, SMB_ACL_T theacl, ssize_t *plen)
1499{
1500 return sys_acl_to_text(theacl, plen);
1501}
1502
1503static SMB_ACL_T vfswrap_sys_acl_init(vfs_handle_struct *handle, int count)
1504{
1505 return sys_acl_init(count);
1506}
1507
1508static int vfswrap_sys_acl_create_entry(vfs_handle_struct *handle, SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry)
1509{
1510 return sys_acl_create_entry(pacl, pentry);
1511}
1512
1513static int vfswrap_sys_acl_set_tag_type(vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_TAG_T tagtype)
1514{
1515 return sys_acl_set_tag_type(entry, tagtype);
1516}
1517
1518static int vfswrap_sys_acl_set_qualifier(vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, void *qual)
1519{
1520 return sys_acl_set_qualifier(entry, qual);
1521}
1522
1523static int vfswrap_sys_acl_set_permset(vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_PERMSET_T permset)
1524{
1525 return sys_acl_set_permset(entry, permset);
1526}
1527
1528static int vfswrap_sys_acl_valid(vfs_handle_struct *handle, SMB_ACL_T theacl )
1529{
1530 return sys_acl_valid(theacl );
1531}
1532
1533static int vfswrap_sys_acl_set_file(vfs_handle_struct *handle, const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl)
1534{
1535 return sys_acl_set_file(handle, name, acltype, theacl);
1536}
1537
1538static int vfswrap_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp, SMB_ACL_T theacl)
1539{
1540 return sys_acl_set_fd(handle, fsp, theacl);
1541}
1542
1543static int vfswrap_sys_acl_delete_def_file(vfs_handle_struct *handle, const char *path)
1544{
1545 return sys_acl_delete_def_file(handle, path);
1546}
1547
1548static int vfswrap_sys_acl_get_perm(vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm)
1549{
1550 return sys_acl_get_perm(permset, perm);
1551}
1552
1553static int vfswrap_sys_acl_free_text(vfs_handle_struct *handle, char *text)
1554{
1555 return sys_acl_free_text(text);
1556}
1557
1558static int vfswrap_sys_acl_free_acl(vfs_handle_struct *handle, SMB_ACL_T posix_acl)
1559{
1560 return sys_acl_free_acl(posix_acl);
1561}
1562
1563static int vfswrap_sys_acl_free_qualifier(vfs_handle_struct *handle, void *qualifier, SMB_ACL_TAG_T tagtype)
1564{
1565 return sys_acl_free_qualifier(qualifier, tagtype);
1566}
1567
1568/****************************************************************
1569 Extended attribute operations.
1570*****************************************************************/
1571
1572static ssize_t vfswrap_getxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
1573{
1574 return sys_getxattr(path, name, value, size);
1575}
1576
1577static ssize_t vfswrap_lgetxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
1578{
1579 return sys_lgetxattr(path, name, value, size);
1580}
1581
1582static ssize_t vfswrap_fgetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size)
1583{
1584 return sys_fgetxattr(fsp->fh->fd, name, value, size);
1585}
1586
1587static ssize_t vfswrap_listxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
1588{
1589 return sys_listxattr(path, list, size);
1590}
1591
1592ssize_t vfswrap_llistxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
1593{
1594 return sys_llistxattr(path, list, size);
1595}
1596
1597ssize_t vfswrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size)
1598{
1599 return sys_flistxattr(fsp->fh->fd, list, size);
1600}
1601
1602static int vfswrap_removexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
1603{
1604 return sys_removexattr(path, name);
1605}
1606
1607static int vfswrap_lremovexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
1608{
1609 return sys_lremovexattr(path, name);
1610}
1611
1612static int vfswrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name)
1613{
1614 return sys_fremovexattr(fsp->fh->fd, name);
1615}
1616
1617static int vfswrap_setxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
1618{
1619 return sys_setxattr(path, name, value, size, flags);
1620}
1621
1622static int vfswrap_lsetxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
1623{
1624 return sys_lsetxattr(path, name, value, size, flags);
1625}
1626
1627static int vfswrap_fsetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags)
1628{
1629 return sys_fsetxattr(fsp->fh->fd, name, value, size, flags);
1630}
1631
1632static int vfswrap_aio_read(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1633{
1634 int ret;
1635 /*
1636 * aio_read must be done as root, because in the glibc aio
1637 * implementation the helper thread needs to be able to send a signal
1638 * to the main thread, even when it has done a seteuid() to a
1639 * different user.
1640 */
1641 become_root();
1642 ret = sys_aio_read(aiocb);
1643 unbecome_root();
1644 return ret;
1645}
1646
1647static int vfswrap_aio_write(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1648{
1649 int ret;
1650 /*
1651 * aio_write must be done as root, because in the glibc aio
1652 * implementation the helper thread needs to be able to send a signal
1653 * to the main thread, even when it has done a seteuid() to a
1654 * different user.
1655 */
1656 become_root();
1657 ret = sys_aio_write(aiocb);
1658 unbecome_root();
1659 return ret;
1660}
1661
1662static ssize_t vfswrap_aio_return(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1663{
1664 return sys_aio_return(aiocb);
1665}
1666
1667static int vfswrap_aio_cancel(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1668{
1669 return sys_aio_cancel(fsp->fh->fd, aiocb);
1670}
1671
1672static int vfswrap_aio_error(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1673{
1674 return sys_aio_error(aiocb);
1675}
1676
1677static int vfswrap_aio_fsync(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_STRUCT_AIOCB *aiocb)
1678{
1679 return sys_aio_fsync(op, aiocb);
1680}
1681
1682static int vfswrap_aio_suspend(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_AIOCB * const aiocb[], int n, const struct timespec *timeout)
1683{
1684 return sys_aio_suspend(aiocb, n, timeout);
1685}
1686
1687static bool vfswrap_aio_force(struct vfs_handle_struct *handle, struct files_struct *fsp)
1688{
1689 return false;
1690}
1691
1692static bool vfswrap_is_offline(struct vfs_handle_struct *handle, const char *path, SMB_STRUCT_STAT *sbuf)
1693{
1694 if (ISDOT(path) || ISDOTDOT(path)) {
1695 return false;
1696 }
1697
1698 if (!lp_dmapi_support(SNUM(handle->conn)) || !dmapi_have_session()) {
1699#if defined(ENOTSUP)
1700 errno = ENOTSUP;
1701#endif
1702 return false;
1703 }
1704
1705 return (dmapi_file_flags(path) & FILE_ATTRIBUTE_OFFLINE) != 0;
1706}
1707
1708static int vfswrap_set_offline(struct vfs_handle_struct *handle, const char *path)
1709{
1710 /* We don't know how to set offline bit by default, needs to be overriden in the vfs modules */
1711#if defined(ENOTSUP)
1712 errno = ENOTSUP;
1713#endif
1714 return -1;
1715}
1716
1717static struct vfs_fn_pointers vfs_default_fns = {
1718 /* Disk operations */
1719
1720 .connect_fn = vfswrap_connect,
1721 .disconnect = vfswrap_disconnect,
1722 .disk_free = vfswrap_disk_free,
1723 .get_quota = vfswrap_get_quota,
1724 .set_quota = vfswrap_set_quota,
1725 .get_shadow_copy_data = vfswrap_get_shadow_copy_data,
1726 .statvfs = vfswrap_statvfs,
1727 .fs_capabilities = vfswrap_fs_capabilities,
1728
1729 /* Directory operations */
1730
1731 .opendir = vfswrap_opendir,
1732 .readdir = vfswrap_readdir,
1733 .seekdir = vfswrap_seekdir,
1734 .telldir = vfswrap_telldir,
1735 .rewind_dir = vfswrap_rewinddir,
1736 .mkdir = vfswrap_mkdir,
1737 .rmdir = vfswrap_rmdir,
1738 .closedir = vfswrap_closedir,
1739 .init_search_op = vfswrap_init_search_op,
1740
1741 /* File operations */
1742
1743 .open = vfswrap_open,
1744 .create_file = vfswrap_create_file,
1745 .close_fn = vfswrap_close,
1746 .vfs_read = vfswrap_read,
1747 .pread = vfswrap_pread,
1748 .write = vfswrap_write,
1749 .pwrite = vfswrap_pwrite,
1750 .lseek = vfswrap_lseek,
1751 .sendfile = vfswrap_sendfile,
1752 .recvfile = vfswrap_recvfile,
1753 .rename = vfswrap_rename,
1754 .fsync = vfswrap_fsync,
1755 .stat = vfswrap_stat,
1756 .fstat = vfswrap_fstat,
1757 .lstat = vfswrap_lstat,
1758 .get_alloc_size = vfswrap_get_alloc_size,
1759 .unlink = vfswrap_unlink,
1760 .chmod = vfswrap_chmod,
1761 .fchmod = vfswrap_fchmod,
1762 .chown = vfswrap_chown,
1763 .fchown = vfswrap_fchown,
1764 .lchown = vfswrap_lchown,
1765 .chdir = vfswrap_chdir,
1766 .getwd = vfswrap_getwd,
1767 .ntimes = vfswrap_ntimes,
1768 .ftruncate = vfswrap_ftruncate,
1769 .lock = vfswrap_lock,
1770 .kernel_flock = vfswrap_kernel_flock,
1771 .linux_setlease = vfswrap_linux_setlease,
1772 .getlock = vfswrap_getlock,
1773 .symlink = vfswrap_symlink,
1774 .vfs_readlink = vfswrap_readlink,
1775 .link = vfswrap_link,
1776 .mknod = vfswrap_mknod,
1777 .realpath = vfswrap_realpath,
1778 .notify_watch = vfswrap_notify_watch,
1779 .chflags = vfswrap_chflags,
1780 .file_id_create = vfswrap_file_id_create,
1781 .streaminfo = vfswrap_streaminfo,
1782 .get_real_filename = vfswrap_get_real_filename,
1783 .connectpath = vfswrap_connectpath,
1784 .brl_lock_windows = vfswrap_brl_lock_windows,
1785 .brl_unlock_windows = vfswrap_brl_unlock_windows,
1786 .brl_cancel_windows = vfswrap_brl_cancel_windows,
1787 .strict_lock = vfswrap_strict_lock,
1788 .strict_unlock = vfswrap_strict_unlock,
1789 .translate_name = vfswrap_translate_name,
1790
1791 /* NT ACL operations. */
1792
1793 .fget_nt_acl = vfswrap_fget_nt_acl,
1794 .get_nt_acl = vfswrap_get_nt_acl,
1795 .fset_nt_acl = vfswrap_fset_nt_acl,
1796
1797 /* POSIX ACL operations. */
1798
1799 .chmod_acl = vfswrap_chmod_acl,
1800 .fchmod_acl = vfswrap_fchmod_acl,
1801
1802 .sys_acl_get_entry = vfswrap_sys_acl_get_entry,
1803 .sys_acl_get_tag_type = vfswrap_sys_acl_get_tag_type,
1804 .sys_acl_get_permset = vfswrap_sys_acl_get_permset,
1805 .sys_acl_get_qualifier = vfswrap_sys_acl_get_qualifier,
1806 .sys_acl_get_file = vfswrap_sys_acl_get_file,
1807 .sys_acl_get_fd = vfswrap_sys_acl_get_fd,
1808 .sys_acl_clear_perms = vfswrap_sys_acl_clear_perms,
1809 .sys_acl_add_perm = vfswrap_sys_acl_add_perm,
1810 .sys_acl_to_text = vfswrap_sys_acl_to_text,
1811 .sys_acl_init = vfswrap_sys_acl_init,
1812 .sys_acl_create_entry = vfswrap_sys_acl_create_entry,
1813 .sys_acl_set_tag_type = vfswrap_sys_acl_set_tag_type,
1814 .sys_acl_set_qualifier = vfswrap_sys_acl_set_qualifier,
1815 .sys_acl_set_permset = vfswrap_sys_acl_set_permset,
1816 .sys_acl_valid = vfswrap_sys_acl_valid,
1817 .sys_acl_set_file = vfswrap_sys_acl_set_file,
1818 .sys_acl_set_fd = vfswrap_sys_acl_set_fd,
1819 .sys_acl_delete_def_file = vfswrap_sys_acl_delete_def_file,
1820 .sys_acl_get_perm = vfswrap_sys_acl_get_perm,
1821 .sys_acl_free_text = vfswrap_sys_acl_free_text,
1822 .sys_acl_free_acl = vfswrap_sys_acl_free_acl,
1823 .sys_acl_free_qualifier = vfswrap_sys_acl_free_qualifier,
1824
1825 /* EA operations. */
1826 .getxattr = vfswrap_getxattr,
1827 .lgetxattr = vfswrap_lgetxattr,
1828 .fgetxattr = vfswrap_fgetxattr,
1829 .listxattr = vfswrap_listxattr,
1830 .llistxattr = vfswrap_llistxattr,
1831 .flistxattr = vfswrap_flistxattr,
1832 .removexattr = vfswrap_removexattr,
1833 .lremovexattr = vfswrap_lremovexattr,
1834 .fremovexattr = vfswrap_fremovexattr,
1835 .setxattr = vfswrap_setxattr,
1836 .lsetxattr = vfswrap_lsetxattr,
1837 .fsetxattr = vfswrap_fsetxattr,
1838
1839 /* aio operations */
1840 .aio_read = vfswrap_aio_read,
1841 .aio_write = vfswrap_aio_write,
1842 .aio_return_fn = vfswrap_aio_return,
1843 .aio_cancel = vfswrap_aio_cancel,
1844 .aio_error_fn = vfswrap_aio_error,
1845 .aio_fsync = vfswrap_aio_fsync,
1846 .aio_suspend = vfswrap_aio_suspend,
1847 .aio_force = vfswrap_aio_force,
1848
1849 /* offline operations */
1850 .is_offline = vfswrap_is_offline,
1851 .set_offline = vfswrap_set_offline
1852};
1853
1854NTSTATUS vfs_default_init(void);
1855NTSTATUS vfs_default_init(void)
1856{
1857 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1858 DEFAULT_VFS_MODULE_NAME, &vfs_default_fns);
1859}
1860
1861
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