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CVE-2023-0614 ldb: Centralise checking for inaccessible matches
[Samba.git] / source3 / modules / vfs_glusterfs.c
blob25b82bdd4719c7b02a4513d94ca0230dec353540
1 /*
2 Unix SMB/CIFS implementation.
3
4 Wrap GlusterFS GFAPI calls in vfs functions.
5
6 Copyright (c) 2013 Anand Avati <avati@redhat.com>
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
20 */
21
22 /**
23 * @file vfs_glusterfs.c
24 * @author Anand Avati <avati@redhat.com>
25 * @date May 2013
26 * @brief Samba VFS module for glusterfs
27 *
28 * @todo
29 * - sendfile/recvfile support
30 *
31 * A Samba VFS module for GlusterFS, based on Gluster's libgfapi.
32 * This is a "bottom" vfs module (not something to be stacked on top of
33 * another module), and translates (most) calls to the closest actions
34 * available in libgfapi.
35 *
36 */
37
38 #include "includes.h"
39 #include "smbd/smbd.h"
40 #include <stdio.h>
41 #include <glusterfs/api/glfs.h>
42 #include "lib/util/dlinklist.h"
43 #include "lib/util/tevent_unix.h"
44 #include "smbd/globals.h"
45 #include "lib/util/sys_rw.h"
46 #include "smbprofile.h"
47 #include "modules/posixacl_xattr.h"
48 #include "lib/pthreadpool/pthreadpool_tevent.h"
49
50 #define DEFAULT_VOLFILE_SERVER "localhost"
51 #define GLUSTER_NAME_MAX 255
52
53 /**
54 * Helper to convert struct stat to struct stat_ex.
55 */
56 static void smb_stat_ex_from_stat(struct stat_ex *dst, const struct stat *src)
57 {
58 ZERO_STRUCTP(dst);
59
60 dst->st_ex_dev = src->st_dev;
61 dst->st_ex_ino = src->st_ino;
62 dst->st_ex_mode = src->st_mode;
63 dst->st_ex_nlink = src->st_nlink;
64 dst->st_ex_uid = src->st_uid;
65 dst->st_ex_gid = src->st_gid;
66 dst->st_ex_rdev = src->st_rdev;
67 dst->st_ex_size = src->st_size;
68 dst->st_ex_atime.tv_sec = src->st_atime;
69 dst->st_ex_mtime.tv_sec = src->st_mtime;
70 dst->st_ex_ctime.tv_sec = src->st_ctime;
71 dst->st_ex_btime.tv_sec = src->st_mtime;
72 dst->st_ex_blksize = src->st_blksize;
73 dst->st_ex_blocks = src->st_blocks;
74 dst->st_ex_file_id = dst->st_ex_ino;
75 dst->st_ex_iflags |= ST_EX_IFLAG_CALCULATED_FILE_ID;
76 #ifdef STAT_HAVE_NSEC
77 dst->st_ex_atime.tv_nsec = src->st_atime_nsec;
78 dst->st_ex_mtime.tv_nsec = src->st_mtime_nsec;
79 dst->st_ex_ctime.tv_nsec = src->st_ctime_nsec;
80 dst->st_ex_btime.tv_nsec = src->st_mtime_nsec;
81 #endif
82 dst->st_ex_itime = dst->st_ex_btime;
83 dst->st_ex_iflags |= ST_EX_IFLAG_CALCULATED_ITIME;
84 }
85
86 /* pre-opened glfs_t */
87
88 static struct glfs_preopened {
89 char *volume;
90 char *connectpath;
91 glfs_t *fs;
92 int ref;
93 struct glfs_preopened *next, *prev;
94 } *glfs_preopened;
95
96
97 static int glfs_set_preopened(const char *volume, const char *connectpath, glfs_t *fs)
98 {
99 struct glfs_preopened *entry = NULL;
100
101 entry = talloc_zero(NULL, struct glfs_preopened);
102 if (!entry) {
103 errno = ENOMEM;
104 return -1;
105 }
106
107 entry->volume = talloc_strdup(entry, volume);
108 if (!entry->volume) {
109 talloc_free(entry);
110 errno = ENOMEM;
111 return -1;
112 }
113
114 entry->connectpath = talloc_strdup(entry, connectpath);
115 if (entry->connectpath == NULL) {
116 talloc_free(entry);
117 errno = ENOMEM;
118 return -1;
119 }
120
121 entry->fs = fs;
122 entry->ref = 1;
123
124 DLIST_ADD(glfs_preopened, entry);
125
126 return 0;
127 }
128
129 static glfs_t *glfs_find_preopened(const char *volume, const char *connectpath)
130 {
131 struct glfs_preopened *entry = NULL;
132
133 for (entry = glfs_preopened; entry; entry = entry->next) {
134 if (strcmp(entry->volume, volume) == 0 &&
135 strcmp(entry->connectpath, connectpath) == 0)
136 {
137 entry->ref++;
138 return entry->fs;
139 }
140 }
141
142 return NULL;
143 }
144
145 static void glfs_clear_preopened(glfs_t *fs)
146 {
147 struct glfs_preopened *entry = NULL;
148
149 for (entry = glfs_preopened; entry; entry = entry->next) {
150 if (entry->fs == fs) {
151 if (--entry->ref)
152 return;
153
154 DLIST_REMOVE(glfs_preopened, entry);
155
156 glfs_fini(entry->fs);
157 talloc_free(entry);
158 }
159 }
160 }
161
162 static int vfs_gluster_set_volfile_servers(glfs_t *fs,
163 const char *volfile_servers)
164 {
165 char *server = NULL;
166 size_t server_count = 0;
167 size_t server_success = 0;
168 int ret = -1;
169 TALLOC_CTX *frame = talloc_stackframe();
170
171 DBG_INFO("servers list %s\n", volfile_servers);
172
173 while (next_token_talloc(frame, &volfile_servers, &server, " \t")) {
174 char *transport = NULL;
175 char *host = NULL;
176 int port = 0;
177
178 server_count++;
179 DBG_INFO("server %zu %s\n", server_count, server);
180
181 /* Determine the transport type */
182 if (strncmp(server, "unix+", 5) == 0) {
183 port = 0;
184 transport = talloc_strdup(frame, "unix");
185 if (!transport) {
186 errno = ENOMEM;
187 goto out;
188 }
189 host = talloc_strdup(frame, server + 5);
190 if (!host) {
191 errno = ENOMEM;
192 goto out;
193 }
194 } else {
195 char *p = NULL;
196 char *port_index = NULL;
197
198 if (strncmp(server, "tcp+", 4) == 0) {
199 server += 4;
200 }
201
202 /* IPv6 is enclosed in []
203 * ':' before ']' is part of IPv6
204 * ':' after ']' indicates port
205 */
206 p = server;
207 if (server[0] == '[') {
208 server++;
209 p = index(server, ']');
210 if (p == NULL) {
211 /* Malformed IPv6 */
212 continue;
213 }
214 p[0] = '\0';
215 p++;
216 }
217
218 port_index = index(p, ':');
219
220 if (port_index == NULL) {
221 port = 0;
222 } else {
223 port = atoi(port_index + 1);
224 port_index[0] = '\0';
225 }
226 transport = talloc_strdup(frame, "tcp");
227 if (!transport) {
228 errno = ENOMEM;
229 goto out;
230 }
231 host = talloc_strdup(frame, server);
232 if (!host) {
233 errno = ENOMEM;
234 goto out;
235 }
236 }
237
238 DBG_INFO("Calling set volfile server with params "
239 "transport=%s, host=%s, port=%d\n", transport,
240 host, port);
241
242 ret = glfs_set_volfile_server(fs, transport, host, port);
243 if (ret < 0) {
244 DBG_WARNING("Failed to set volfile_server "
245 "transport=%s, host=%s, port=%d (%s)\n",
246 transport, host, port, strerror(errno));
247 } else {
248 server_success++;
249 }
250 }
251
252 out:
253 if (server_count == 0) {
254 ret = -1;
255 } else if (server_success < server_count) {
256 DBG_WARNING("Failed to set %zu out of %zu servers parsed\n",
257 server_count - server_success, server_count);
258 ret = 0;
259 }
260
261 TALLOC_FREE(frame);
262 return ret;
263 }
264
265 /* Disk Operations */
266
267 static int check_for_write_behind_translator(TALLOC_CTX *mem_ctx,
268 glfs_t *fs,
269 const char *volume)
270 {
271 char *buf = NULL;
272 char **lines = NULL;
273 int numlines = 0;
274 int i;
275 char *option;
276 bool write_behind_present = false;
277 size_t newlen;
278 int ret;
279
280 ret = glfs_get_volfile(fs, NULL, 0);
281 if (ret == 0) {
282 DBG_ERR("%s: Failed to get volfile for "
283 "volume (%s): No volfile\n",
284 volume,
285 strerror(errno));
286 return -1;
287 }
288 if (ret > 0) {
289 DBG_ERR("%s: Invalid return %d for glfs_get_volfile for "
290 "volume (%s): No volfile\n",
291 volume,
292 ret,
293 strerror(errno));
294 return -1;
295 }
296
297 newlen = 0 - ret;
298
299 buf = talloc_zero_array(mem_ctx, char, newlen);
300 if (buf == NULL) {
301 return -1;
302 }
303
304 ret = glfs_get_volfile(fs, buf, newlen);
305 if (ret != newlen) {
306 TALLOC_FREE(buf);
307 DBG_ERR("%s: Failed to get volfile for volume (%s)\n",
308 volume, strerror(errno));
309 return -1;
310 }
311
312 option = talloc_asprintf(mem_ctx, "volume %s-write-behind", volume);
313 if (option == NULL) {
314 TALLOC_FREE(buf);
315 return -1;
316 }
317
318 /*
319 * file_lines_parse() plays horrible tricks with
320 * the passed-in talloc pointers and the hierarcy
321 * which makes freeing hard to get right.
322 *
323 * As we know mem_ctx is freed by the caller, after
324 * this point don't free on exit and let the caller
325 * handle it. This violates good Samba coding practice
326 * but we know we're not leaking here.
327 */
328
329 lines = file_lines_parse(buf,
330 newlen,
331 &numlines,
332 mem_ctx);
333 if (lines == NULL || numlines <= 0) {
334 return -1;
335 }
336 /* On success, buf is now a talloc child of lines !! */
337
338 for (i=0; i < numlines; i++) {
339 if (strequal(lines[i], option)) {
340 write_behind_present = true;
341 break;
342 }
343 }
344
345 if (write_behind_present) {
346 DBG_ERR("Write behind translator is enabled for "
347 "volume (%s), refusing to connect! "
348 "Please turn off the write behind translator by calling "
349 "'gluster volume set %s performance.write-behind off' "
350 "on the commandline. "
351 "Check the vfs_glusterfs(8) manpage for "
352 "further details.\n",
353 volume, volume);
354 return -1;
355 }
356
357 return 0;
358 }
359
360 static int vfs_gluster_connect(struct vfs_handle_struct *handle,
361 const char *service,
362 const char *user)
363 {
364 const struct loadparm_substitution *lp_sub =
365 loadparm_s3_global_substitution();
366 const char *volfile_servers;
367 const char *volume;
368 char *logfile;
369 int loglevel;
370 glfs_t *fs = NULL;
371 TALLOC_CTX *tmp_ctx;
372 int ret = 0;
373 bool write_behind_pass_through_set = false;
374
375 tmp_ctx = talloc_new(NULL);
376 if (tmp_ctx == NULL) {
377 ret = -1;
378 goto done;
379 }
380 logfile = lp_parm_substituted_string(tmp_ctx,
381 lp_sub,
382 SNUM(handle->conn),
383 "glusterfs",
384 "logfile",
385 NULL);
386
387 loglevel = lp_parm_int(SNUM(handle->conn), "glusterfs", "loglevel", -1);
388
389 volfile_servers = lp_parm_substituted_string(tmp_ctx,
390 lp_sub,
391 SNUM(handle->conn),
392 "glusterfs",
393 "volfile_server",
394 NULL);
395 if (volfile_servers == NULL) {
396 volfile_servers = DEFAULT_VOLFILE_SERVER;
397 }
398
399 volume = lp_parm_const_string(SNUM(handle->conn), "glusterfs", "volume",
400 NULL);
401 if (volume == NULL) {
402 volume = service;
403 }
404
405 fs = glfs_find_preopened(volume, handle->conn->connectpath);
406 if (fs) {
407 goto done;
408 }
409
410 fs = glfs_new(volume);
411 if (fs == NULL) {
412 ret = -1;
413 goto done;
414 }
415
416 ret = vfs_gluster_set_volfile_servers(fs, volfile_servers);
417 if (ret < 0) {
418 DBG_ERR("Failed to set volfile_servers from list %s\n",
419 volfile_servers);
420 goto done;
421 }
422
423 ret = glfs_set_xlator_option(fs, "*-md-cache", "cache-posix-acl",
424 "true");
425 if (ret < 0) {
426 DEBUG(0, ("%s: Failed to set xlator options\n", volume));
427 goto done;
428 }
429
430 ret = glfs_set_xlator_option(fs, "*-md-cache", "cache-selinux",
431 "true");
432 if (ret < 0) {
433 DEBUG(0, ("%s: Failed to set xlator options\n", volume));
434 goto done;
435 }
436
437 ret = glfs_set_xlator_option(fs, "*-snapview-client",
438 "snapdir-entry-path",
439 handle->conn->connectpath);
440 if (ret < 0) {
441 DEBUG(0, ("%s: Failed to set xlator option:"
442 " snapdir-entry-path\n", volume));
443 goto done;
444 }
445
446 #ifdef HAVE_GFAPI_VER_7_9
447 ret = glfs_set_xlator_option(fs, "*-write-behind", "pass-through",
448 "true");
449 if (ret < 0) {
450 DBG_ERR("%s: Failed to set xlator option: pass-through\n",
451 volume);
452 goto done;
453 }
454 write_behind_pass_through_set = true;
455 #endif
456
457 ret = glfs_set_logging(fs, logfile, loglevel);
458 if (ret < 0) {
459 DEBUG(0, ("%s: Failed to set logfile %s loglevel %d\n",
460 volume, logfile, loglevel));
461 goto done;
462 }
463
464 ret = glfs_init(fs);
465 if (ret < 0) {
466 DEBUG(0, ("%s: Failed to initialize volume (%s)\n",
467 volume, strerror(errno)));
468 goto done;
469 }
470
471 if (!write_behind_pass_through_set) {
472 ret = check_for_write_behind_translator(tmp_ctx, fs, volume);
473 if (ret < 0) {
474 goto done;
475 }
476 }
477
478 ret = glfs_set_preopened(volume, handle->conn->connectpath, fs);
479 if (ret < 0) {
480 DEBUG(0, ("%s: Failed to register volume (%s)\n",
481 volume, strerror(errno)));
482 goto done;
483 }
484
485 /*
486 * The shadow_copy2 module will fail to export subdirectories
487 * of a gluster volume unless we specify the mount point,
488 * because the detection fails if the file system is not
489 * locally mounted:
490 * https://bugzilla.samba.org/show_bug.cgi?id=13091
491 */
492 lp_do_parameter(SNUM(handle->conn), "shadow:mountpoint", "/");
493
494 /*
495 * Unless we have an async implementation of getxattrat turn this off.
496 */
497 lp_do_parameter(SNUM(handle->conn), "smbd async dosmode", "false");
498
499 done:
500 if (ret < 0) {
501 if (fs)
502 glfs_fini(fs);
503 } else {
504 DBG_ERR("%s: Initialized volume from servers %s\n",
505 volume, volfile_servers);
506 handle->data = fs;
507 }
508 talloc_free(tmp_ctx);
509 return ret;
510 }
511
512 static void vfs_gluster_disconnect(struct vfs_handle_struct *handle)
513 {
514 glfs_t *fs = NULL;
515
516 fs = handle->data;
517
518 glfs_clear_preopened(fs);
519 }
520
521 static uint64_t vfs_gluster_disk_free(struct vfs_handle_struct *handle,
522 const struct smb_filename *smb_fname,
523 uint64_t *bsize_p,
524 uint64_t *dfree_p,
525 uint64_t *dsize_p)
526 {
527 struct statvfs statvfs = { 0, };
528 int ret;
529
530 ret = glfs_statvfs(handle->data, smb_fname->base_name, &statvfs);
531 if (ret < 0) {
532 return -1;
533 }
534
535 if (bsize_p != NULL) {
536 *bsize_p = (uint64_t)statvfs.f_bsize; /* Block size */
537 }
538 if (dfree_p != NULL) {
539 *dfree_p = (uint64_t)statvfs.f_bavail; /* Available Block units */
540 }
541 if (dsize_p != NULL) {
542 *dsize_p = (uint64_t)statvfs.f_blocks; /* Total Block units */
543 }
544
545 return (uint64_t)statvfs.f_bavail;
546 }
547
548 static int vfs_gluster_get_quota(struct vfs_handle_struct *handle,
549 const struct smb_filename *smb_fname,
550 enum SMB_QUOTA_TYPE qtype,
551 unid_t id,
552 SMB_DISK_QUOTA *qt)
553 {
554 errno = ENOSYS;
555 return -1;
556 }
557
558 static int
559 vfs_gluster_set_quota(struct vfs_handle_struct *handle,
560 enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
561 {
562 errno = ENOSYS;
563 return -1;
564 }
565
566 static int vfs_gluster_statvfs(struct vfs_handle_struct *handle,
567 const struct smb_filename *smb_fname,
568 struct vfs_statvfs_struct *vfs_statvfs)
569 {
570 struct statvfs statvfs = { 0, };
571 int ret;
572
573 ret = glfs_statvfs(handle->data, smb_fname->base_name, &statvfs);
574 if (ret < 0) {
575 DEBUG(0, ("glfs_statvfs(%s) failed: %s\n",
576 smb_fname->base_name, strerror(errno)));
577 return -1;
578 }
579
580 ZERO_STRUCTP(vfs_statvfs);
581
582 vfs_statvfs->OptimalTransferSize = statvfs.f_frsize;
583 vfs_statvfs->BlockSize = statvfs.f_bsize;
584 vfs_statvfs->TotalBlocks = statvfs.f_blocks;
585 vfs_statvfs->BlocksAvail = statvfs.f_bfree;
586 vfs_statvfs->UserBlocksAvail = statvfs.f_bavail;
587 vfs_statvfs->TotalFileNodes = statvfs.f_files;
588 vfs_statvfs->FreeFileNodes = statvfs.f_ffree;
589 vfs_statvfs->FsIdentifier = statvfs.f_fsid;
590 vfs_statvfs->FsCapabilities =
591 FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
592
593 return ret;
594 }
595
596 static uint32_t vfs_gluster_fs_capabilities(struct vfs_handle_struct *handle,
597 enum timestamp_set_resolution *p_ts_res)
598 {
599 uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
600
601 #ifdef HAVE_GFAPI_VER_6
602 caps |= FILE_SUPPORTS_SPARSE_FILES;
603 #endif
604
605 #ifdef STAT_HAVE_NSEC
606 *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
607 #endif
608
609 return caps;
610 }
611
612 static glfs_fd_t *vfs_gluster_fetch_glfd(struct vfs_handle_struct *handle,
613 files_struct *fsp)
614 {
615 glfs_fd_t **glfd = (glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
616 if (glfd == NULL) {
617 DBG_INFO("Failed to fetch fsp extension\n");
618 return NULL;
619 }
620 if (*glfd == NULL) {
621 DBG_INFO("Empty glfs_fd_t pointer\n");
622 return NULL;
623 }
624
625 return *glfd;
626 }
627
628 static DIR *vfs_gluster_fdopendir(struct vfs_handle_struct *handle,
629 files_struct *fsp, const char *mask,
630 uint32_t attributes)
631 {
632 glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
633 if (glfd == NULL) {
634 DBG_ERR("Failed to fetch gluster fd\n");
635 return NULL;
636 }
637
638 return (DIR *)glfd;
639 }
640
641 static int vfs_gluster_closedir(struct vfs_handle_struct *handle, DIR *dirp)
642 {
643 int ret;
644
645 START_PROFILE(syscall_closedir);
646 ret = glfs_closedir((void *)dirp);
647 END_PROFILE(syscall_closedir);
648
649 return ret;
650 }
651
652 static struct dirent *vfs_gluster_readdir(struct vfs_handle_struct *handle,
653 struct files_struct *dirfsp,
654 DIR *dirp,
655 SMB_STRUCT_STAT *sbuf)
656 {
657 static char direntbuf[512];
658 int ret;
659 struct stat stat;
660 struct dirent *dirent = 0;
661
662 START_PROFILE(syscall_readdir);
663 if (sbuf != NULL) {
664 ret = glfs_readdirplus_r((void *)dirp, &stat, (void *)direntbuf,
665 &dirent);
666 } else {
667 ret = glfs_readdir_r((void *)dirp, (void *)direntbuf, &dirent);
668 }
669
670 if ((ret < 0) || (dirent == NULL)) {
671 END_PROFILE(syscall_readdir);
672 return NULL;
673 }
674
675 if (sbuf != NULL) {
676 SET_STAT_INVALID(*sbuf);
677 if (!S_ISLNK(stat.st_mode)) {
678 smb_stat_ex_from_stat(sbuf, &stat);
679 }
680 }
681
682 END_PROFILE(syscall_readdir);
683 return dirent;
684 }
685
686 static long vfs_gluster_telldir(struct vfs_handle_struct *handle, DIR *dirp)
687 {
688 long ret;
689
690 START_PROFILE(syscall_telldir);
691 ret = glfs_telldir((void *)dirp);
692 END_PROFILE(syscall_telldir);
693
694 return ret;
695 }
696
697 static void vfs_gluster_seekdir(struct vfs_handle_struct *handle, DIR *dirp,
698 long offset)
699 {
700 START_PROFILE(syscall_seekdir);
701 glfs_seekdir((void *)dirp, offset);
702 END_PROFILE(syscall_seekdir);
703 }
704
705 static void vfs_gluster_rewinddir(struct vfs_handle_struct *handle, DIR *dirp)
706 {
707 START_PROFILE(syscall_rewinddir);
708 glfs_seekdir((void *)dirp, 0);
709 END_PROFILE(syscall_rewinddir);
710 }
711
712 static int vfs_gluster_mkdirat(struct vfs_handle_struct *handle,
713 struct files_struct *dirfsp,
714 const struct smb_filename *smb_fname,
715 mode_t mode)
716 {
717 struct smb_filename *full_fname = NULL;
718 int ret;
719
720 START_PROFILE(syscall_mkdirat);
721
722 full_fname = full_path_from_dirfsp_atname(talloc_tos(),
723 dirfsp,
724 smb_fname);
725 if (full_fname == NULL) {
726 END_PROFILE(syscall_mkdirat);
727 return -1;
728 }
729
730 ret = glfs_mkdir(handle->data, full_fname->base_name, mode);
731
732 TALLOC_FREE(full_fname);
733
734 END_PROFILE(syscall_mkdirat);
735
736 return ret;
737 }
738
739 static int vfs_gluster_openat(struct vfs_handle_struct *handle,
740 const struct files_struct *dirfsp,
741 const struct smb_filename *smb_fname,
742 files_struct *fsp,
743 int flags,
744 mode_t mode)
745 {
746 struct smb_filename *name = NULL;
747 bool became_root = false;
748 glfs_fd_t *glfd;
749 glfs_fd_t **p_tmp;
750
751 START_PROFILE(syscall_openat);
752
753 /*
754 * Looks like glfs API doesn't have openat().
755 */
756 if (fsp_get_pathref_fd(dirfsp) != AT_FDCWD) {
757 name = full_path_from_dirfsp_atname(talloc_tos(),
758 dirfsp,
759 smb_fname);
760 if (name == NULL) {
761 return -1;
762 }
763 smb_fname = name;
764 }
765
766 p_tmp = VFS_ADD_FSP_EXTENSION(handle, fsp, glfs_fd_t *, NULL);
767 if (p_tmp == NULL) {
768 TALLOC_FREE(name);
769 END_PROFILE(syscall_openat);
770 errno = ENOMEM;
771 return -1;
772 }
773
774 if (fsp->fsp_flags.is_pathref) {
775 /*
776 * ceph doesn't support O_PATH so we have to fallback to
777 * become_root().
778 */
779 become_root();
780 became_root = true;
781 }
782
783 if (flags & O_DIRECTORY) {
784 glfd = glfs_opendir(handle->data, smb_fname->base_name);
785 } else if (flags & O_CREAT) {
786 glfd = glfs_creat(handle->data, smb_fname->base_name, flags,
787 mode);
788 } else {
789 glfd = glfs_open(handle->data, smb_fname->base_name, flags);
790 }
791
792 if (became_root) {
793 unbecome_root();
794 }
795
796 fsp->fsp_flags.have_proc_fds = false;
797
798 if (glfd == NULL) {
799 TALLOC_FREE(name);
800 END_PROFILE(syscall_openat);
801 /* no extension destroy_fn, so no need to save errno */
802 VFS_REMOVE_FSP_EXTENSION(handle, fsp);
803 return -1;
804 }
805
806 *p_tmp = glfd;
807
808 TALLOC_FREE(name);
809 END_PROFILE(syscall_openat);
810 /* An arbitrary value for error reporting, so you know its us. */
811 return 13371337;
812 }
813
814 static int vfs_gluster_close(struct vfs_handle_struct *handle,
815 files_struct *fsp)
816 {
817 int ret;
818 glfs_fd_t *glfd = NULL;
819
820 START_PROFILE(syscall_close);
821
822 glfd = vfs_gluster_fetch_glfd(handle, fsp);
823 if (glfd == NULL) {
824 END_PROFILE(syscall_close);
825 DBG_ERR("Failed to fetch gluster fd\n");
826 return -1;
827 }
828
829 VFS_REMOVE_FSP_EXTENSION(handle, fsp);
830
831 ret = glfs_close(glfd);
832 END_PROFILE(syscall_close);
833
834 return ret;
835 }
836
837 static ssize_t vfs_gluster_pread(struct vfs_handle_struct *handle,
838 files_struct *fsp, void *data, size_t n,
839 off_t offset)
840 {
841 ssize_t ret;
842 glfs_fd_t *glfd = NULL;
843
844 START_PROFILE_BYTES(syscall_pread, n);
845
846 glfd = vfs_gluster_fetch_glfd(handle, fsp);
847 if (glfd == NULL) {
848 END_PROFILE_BYTES(syscall_pread);
849 DBG_ERR("Failed to fetch gluster fd\n");
850 return -1;
851 }
852
853 #ifdef HAVE_GFAPI_VER_7_6
854 ret = glfs_pread(glfd, data, n, offset, 0, NULL);
855 #else
856 ret = glfs_pread(glfd, data, n, offset, 0);
857 #endif
858 END_PROFILE_BYTES(syscall_pread);
859
860 return ret;
861 }
862
863 struct vfs_gluster_pread_state {
864 ssize_t ret;
865 glfs_fd_t *fd;
866 void *buf;
867 size_t count;
868 off_t offset;
869
870 struct vfs_aio_state vfs_aio_state;
871 SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
872 };
873
874 static void vfs_gluster_pread_do(void *private_data);
875 static void vfs_gluster_pread_done(struct tevent_req *subreq);
876 static int vfs_gluster_pread_state_destructor(struct vfs_gluster_pread_state *state);
877
878 static struct tevent_req *vfs_gluster_pread_send(struct vfs_handle_struct
879 *handle, TALLOC_CTX *mem_ctx,
880 struct tevent_context *ev,
881 files_struct *fsp,
882 void *data, size_t n,
883 off_t offset)
884 {
885 struct vfs_gluster_pread_state *state;
886 struct tevent_req *req, *subreq;
887
888 glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
889 if (glfd == NULL) {
890 DBG_ERR("Failed to fetch gluster fd\n");
891 return NULL;
892 }
893
894 req = tevent_req_create(mem_ctx, &state, struct vfs_gluster_pread_state);
895 if (req == NULL) {
896 return NULL;
897 }
898
899 state->ret = -1;
900 state->fd = glfd;
901 state->buf = data;
902 state->count = n;
903 state->offset = offset;
904
905 SMBPROFILE_BYTES_ASYNC_START(syscall_asys_pread, profile_p,
906 state->profile_bytes, n);
907 SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
908
909 subreq = pthreadpool_tevent_job_send(
910 state, ev, handle->conn->sconn->pool,
911 vfs_gluster_pread_do, state);
912 if (tevent_req_nomem(subreq, req)) {
913 return tevent_req_post(req, ev);
914 }
915 tevent_req_set_callback(subreq, vfs_gluster_pread_done, req);
916
917 talloc_set_destructor(state, vfs_gluster_pread_state_destructor);
918
919 return req;
920 }
921
922 static void vfs_gluster_pread_do(void *private_data)
923 {
924 struct vfs_gluster_pread_state *state = talloc_get_type_abort(
925 private_data, struct vfs_gluster_pread_state);
926 struct timespec start_time;
927 struct timespec end_time;
928
929 SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
930
931 PROFILE_TIMESTAMP(&start_time);
932
933 do {
934 #ifdef HAVE_GFAPI_VER_7_6
935 state->ret = glfs_pread(state->fd, state->buf, state->count,
936 state->offset, 0, NULL);
937 #else
938 state->ret = glfs_pread(state->fd, state->buf, state->count,
939 state->offset, 0);
940 #endif
941 } while ((state->ret == -1) && (errno == EINTR));
942
943 if (state->ret == -1) {
944 state->vfs_aio_state.error = errno;
945 }
946
947 PROFILE_TIMESTAMP(&end_time);
948
949 state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
950
951 SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
952 }
953
954 static int vfs_gluster_pread_state_destructor(struct vfs_gluster_pread_state *state)
955 {
956 return -1;
957 }
958
959 static void vfs_gluster_pread_done(struct tevent_req *subreq)
960 {
961 struct tevent_req *req = tevent_req_callback_data(
962 subreq, struct tevent_req);
963 struct vfs_gluster_pread_state *state = tevent_req_data(
964 req, struct vfs_gluster_pread_state);
965 int ret;
966
967 ret = pthreadpool_tevent_job_recv(subreq);
968 TALLOC_FREE(subreq);
969 SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
970 talloc_set_destructor(state, NULL);
971 if (ret != 0) {
972 if (ret != EAGAIN) {
973 tevent_req_error(req, ret);
974 return;
975 }
976 /*
977 * If we get EAGAIN from pthreadpool_tevent_job_recv() this
978 * means the lower level pthreadpool failed to create a new
979 * thread. Fallback to sync processing in that case to allow
980 * some progress for the client.
981 */
982 vfs_gluster_pread_do(state);
983 }
984
985 tevent_req_done(req);
986 }
987
988 static ssize_t vfs_gluster_pread_recv(struct tevent_req *req,
989 struct vfs_aio_state *vfs_aio_state)
990 {
991 struct vfs_gluster_pread_state *state = tevent_req_data(
992 req, struct vfs_gluster_pread_state);
993
994 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
995 return -1;
996 }
997
998 *vfs_aio_state = state->vfs_aio_state;
999 return state->ret;
1000 }
1001
1002 struct vfs_gluster_pwrite_state {
1003 ssize_t ret;
1004 glfs_fd_t *fd;
1005 const void *buf;
1006 size_t count;
1007 off_t offset;
1008
1009 struct vfs_aio_state vfs_aio_state;
1010 SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
1011 };
1012
1013 static void vfs_gluster_pwrite_do(void *private_data);
1014 static void vfs_gluster_pwrite_done(struct tevent_req *subreq);
1015 static int vfs_gluster_pwrite_state_destructor(struct vfs_gluster_pwrite_state *state);
1016
1017 static struct tevent_req *vfs_gluster_pwrite_send(struct vfs_handle_struct
1018 *handle, TALLOC_CTX *mem_ctx,
1019 struct tevent_context *ev,
1020 files_struct *fsp,
1021 const void *data, size_t n,
1022 off_t offset)
1023 {
1024 struct tevent_req *req, *subreq;
1025 struct vfs_gluster_pwrite_state *state;
1026
1027 glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
1028 if (glfd == NULL) {
1029 DBG_ERR("Failed to fetch gluster fd\n");
1030 return NULL;
1031 }
1032
1033 req = tevent_req_create(mem_ctx, &state, struct vfs_gluster_pwrite_state);
1034 if (req == NULL) {
1035 return NULL;
1036 }
1037
1038 state->ret = -1;
1039 state->fd = glfd;
1040 state->buf = data;
1041 state->count = n;
1042 state->offset = offset;
1043
1044 SMBPROFILE_BYTES_ASYNC_START(syscall_asys_pwrite, profile_p,
1045 state->profile_bytes, n);
1046 SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
1047
1048 subreq = pthreadpool_tevent_job_send(
1049 state, ev, handle->conn->sconn->pool,
1050 vfs_gluster_pwrite_do, state);
1051 if (tevent_req_nomem(subreq, req)) {
1052 return tevent_req_post(req, ev);
1053 }
1054 tevent_req_set_callback(subreq, vfs_gluster_pwrite_done, req);
1055
1056 talloc_set_destructor(state, vfs_gluster_pwrite_state_destructor);
1057
1058 return req;
1059 }
1060
1061 static void vfs_gluster_pwrite_do(void *private_data)
1062 {
1063 struct vfs_gluster_pwrite_state *state = talloc_get_type_abort(
1064 private_data, struct vfs_gluster_pwrite_state);
1065 struct timespec start_time;
1066 struct timespec end_time;
1067
1068 SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
1069
1070 PROFILE_TIMESTAMP(&start_time);
1071
1072 do {
1073 #ifdef HAVE_GFAPI_VER_7_6
1074 state->ret = glfs_pwrite(state->fd, state->buf, state->count,
1075 state->offset, 0, NULL, NULL);
1076 #else
1077 state->ret = glfs_pwrite(state->fd, state->buf, state->count,
1078 state->offset, 0);
1079 #endif
1080 } while ((state->ret == -1) && (errno == EINTR));
1081
1082 if (state->ret == -1) {
1083 state->vfs_aio_state.error = errno;
1084 }
1085
1086 PROFILE_TIMESTAMP(&end_time);
1087
1088 state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
1089
1090 SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
1091 }
1092
1093 static int vfs_gluster_pwrite_state_destructor(struct vfs_gluster_pwrite_state *state)
1094 {
1095 return -1;
1096 }
1097
1098 static void vfs_gluster_pwrite_done(struct tevent_req *subreq)
1099 {
1100 struct tevent_req *req = tevent_req_callback_data(
1101 subreq, struct tevent_req);
1102 struct vfs_gluster_pwrite_state *state = tevent_req_data(
1103 req, struct vfs_gluster_pwrite_state);
1104 int ret;
1105
1106 ret = pthreadpool_tevent_job_recv(subreq);
1107 TALLOC_FREE(subreq);
1108 SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
1109 talloc_set_destructor(state, NULL);
1110 if (ret != 0) {
1111 if (ret != EAGAIN) {
1112 tevent_req_error(req, ret);
1113 return;
1114 }
1115 /*
1116 * If we get EAGAIN from pthreadpool_tevent_job_recv() this
1117 * means the lower level pthreadpool failed to create a new
1118 * thread. Fallback to sync processing in that case to allow
1119 * some progress for the client.
1120 */
1121 vfs_gluster_pwrite_do(state);
1122 }
1123
1124 tevent_req_done(req);
1125 }
1126
1127 static ssize_t vfs_gluster_pwrite_recv(struct tevent_req *req,
1128 struct vfs_aio_state *vfs_aio_state)
1129 {
1130 struct vfs_gluster_pwrite_state *state = tevent_req_data(
1131 req, struct vfs_gluster_pwrite_state);
1132
1133 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1134 return -1;
1135 }
1136
1137 *vfs_aio_state = state->vfs_aio_state;
1138
1139 return state->ret;
1140 }
1141
1142 static ssize_t vfs_gluster_pwrite(struct vfs_handle_struct *handle,
1143 files_struct *fsp, const void *data,
1144 size_t n, off_t offset)
1145 {
1146 ssize_t ret;
1147 glfs_fd_t *glfd = NULL;
1148
1149 START_PROFILE_BYTES(syscall_pwrite, n);
1150
1151 glfd = vfs_gluster_fetch_glfd(handle, fsp);
1152 if (glfd == NULL) {
1153 END_PROFILE_BYTES(syscall_pwrite);
1154 DBG_ERR("Failed to fetch gluster fd\n");
1155 return -1;
1156 }
1157
1158 #ifdef HAVE_GFAPI_VER_7_6
1159 ret = glfs_pwrite(glfd, data, n, offset, 0, NULL, NULL);
1160 #else
1161 ret = glfs_pwrite(glfd, data, n, offset, 0);
1162 #endif
1163 END_PROFILE_BYTES(syscall_pwrite);
1164
1165 return ret;
1166 }
1167
1168 static off_t vfs_gluster_lseek(struct vfs_handle_struct *handle,
1169 files_struct *fsp, off_t offset, int whence)
1170 {
1171 off_t ret = 0;
1172 glfs_fd_t *glfd = NULL;
1173
1174 START_PROFILE(syscall_lseek);
1175
1176 glfd = vfs_gluster_fetch_glfd(handle, fsp);
1177 if (glfd == NULL) {
1178 END_PROFILE(syscall_lseek);
1179 DBG_ERR("Failed to fetch gluster fd\n");
1180 return -1;
1181 }
1182
1183 ret = glfs_lseek(glfd, offset, whence);
1184 END_PROFILE(syscall_lseek);
1185
1186 return ret;
1187 }
1188
1189 static ssize_t vfs_gluster_sendfile(struct vfs_handle_struct *handle, int tofd,
1190 files_struct *fromfsp,
1191 const DATA_BLOB *hdr,
1192 off_t offset, size_t n)
1193 {
1194 errno = ENOTSUP;
1195 return -1;
1196 }
1197
1198 static ssize_t vfs_gluster_recvfile(struct vfs_handle_struct *handle,
1199 int fromfd, files_struct *tofsp,
1200 off_t offset, size_t n)
1201 {
1202 errno = ENOTSUP;
1203 return -1;
1204 }
1205
1206 static int vfs_gluster_renameat(struct vfs_handle_struct *handle,
1207 files_struct *srcfsp,
1208 const struct smb_filename *smb_fname_src,
1209 files_struct *dstfsp,
1210 const struct smb_filename *smb_fname_dst)
1211 {
1212 struct smb_filename *full_fname_src = NULL;
1213 struct smb_filename *full_fname_dst = NULL;
1214 int ret;
1215
1216 START_PROFILE(syscall_renameat);
1217
1218 full_fname_src = full_path_from_dirfsp_atname(talloc_tos(),
1219 srcfsp,
1220 smb_fname_src);
1221 if (full_fname_src == NULL) {
1222 errno = ENOMEM;
1223 END_PROFILE(syscall_renameat);
1224 return -1;
1225 }
1226 full_fname_dst = full_path_from_dirfsp_atname(talloc_tos(),
1227 dstfsp,
1228 smb_fname_dst);
1229 if (full_fname_dst == NULL) {
1230 TALLOC_FREE(full_fname_src);
1231 errno = ENOMEM;
1232 END_PROFILE(syscall_renameat);
1233 return -1;
1234 }
1235 ret = glfs_rename(handle->data,
1236 full_fname_src->base_name,
1237 full_fname_dst->base_name);
1238 TALLOC_FREE(full_fname_src);
1239 TALLOC_FREE(full_fname_dst);
1240 END_PROFILE(syscall_renameat);
1241
1242 return ret;
1243 }
1244
1245 struct vfs_gluster_fsync_state {
1246 ssize_t ret;
1247 glfs_fd_t *fd;
1248
1249 struct vfs_aio_state vfs_aio_state;
1250 SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
1251 };
1252
1253 static void vfs_gluster_fsync_do(void *private_data);
1254 static void vfs_gluster_fsync_done(struct tevent_req *subreq);
1255 static int vfs_gluster_fsync_state_destructor(struct vfs_gluster_fsync_state *state);
1256
1257 static struct tevent_req *vfs_gluster_fsync_send(struct vfs_handle_struct
1258 *handle, TALLOC_CTX *mem_ctx,
1259 struct tevent_context *ev,
1260 files_struct *fsp)
1261 {
1262 struct tevent_req *req, *subreq;
1263 struct vfs_gluster_fsync_state *state;
1264
1265 glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
1266 if (glfd == NULL) {
1267 DBG_ERR("Failed to fetch gluster fd\n");
1268 return NULL;
1269 }
1270
1271 req = tevent_req_create(mem_ctx, &state, struct vfs_gluster_fsync_state);
1272 if (req == NULL) {
1273 return NULL;
1274 }
1275
1276 state->ret = -1;
1277 state->fd = glfd;
1278
1279 SMBPROFILE_BYTES_ASYNC_START(syscall_asys_fsync, profile_p,
1280 state->profile_bytes, 0);
1281 SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
1282
1283 subreq = pthreadpool_tevent_job_send(
1284 state, ev, handle->conn->sconn->pool, vfs_gluster_fsync_do, state);
1285 if (tevent_req_nomem(subreq, req)) {
1286 return tevent_req_post(req, ev);
1287 }
1288 tevent_req_set_callback(subreq, vfs_gluster_fsync_done, req);
1289
1290 talloc_set_destructor(state, vfs_gluster_fsync_state_destructor);
1291
1292 return req;
1293 }
1294
1295 static void vfs_gluster_fsync_do(void *private_data)
1296 {
1297 struct vfs_gluster_fsync_state *state = talloc_get_type_abort(
1298 private_data, struct vfs_gluster_fsync_state);
1299 struct timespec start_time;
1300 struct timespec end_time;
1301
1302 SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
1303
1304 PROFILE_TIMESTAMP(&start_time);
1305
1306 do {
1307 #ifdef HAVE_GFAPI_VER_7_6
1308 state->ret = glfs_fsync(state->fd, NULL, NULL);
1309 #else
1310 state->ret = glfs_fsync(state->fd);
1311 #endif
1312 } while ((state->ret == -1) && (errno == EINTR));
1313
1314 if (state->ret == -1) {
1315 state->vfs_aio_state.error = errno;
1316 }
1317
1318 PROFILE_TIMESTAMP(&end_time);
1319
1320 state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
1321
1322 SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
1323 }
1324
1325 static int vfs_gluster_fsync_state_destructor(struct vfs_gluster_fsync_state *state)
1326 {
1327 return -1;
1328 }
1329
1330 static void vfs_gluster_fsync_done(struct tevent_req *subreq)
1331 {
1332 struct tevent_req *req = tevent_req_callback_data(
1333 subreq, struct tevent_req);
1334 struct vfs_gluster_fsync_state *state = tevent_req_data(
1335 req, struct vfs_gluster_fsync_state);
1336 int ret;
1337
1338 ret = pthreadpool_tevent_job_recv(subreq);
1339 TALLOC_FREE(subreq);
1340 SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
1341 talloc_set_destructor(state, NULL);
1342 if (ret != 0) {
1343 if (ret != EAGAIN) {
1344 tevent_req_error(req, ret);
1345 return;
1346 }
1347 /*
1348 * If we get EAGAIN from pthreadpool_tevent_job_recv() this
1349 * means the lower level pthreadpool failed to create a new
1350 * thread. Fallback to sync processing in that case to allow
1351 * some progress for the client.
1352 */
1353 vfs_gluster_fsync_do(state);
1354 }
1355
1356 tevent_req_done(req);
1357 }
1358
1359 static int vfs_gluster_fsync_recv(struct tevent_req *req,
1360 struct vfs_aio_state *vfs_aio_state)
1361 {
1362 struct vfs_gluster_fsync_state *state = tevent_req_data(
1363 req, struct vfs_gluster_fsync_state);
1364
1365 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1366 return -1;
1367 }
1368
1369 *vfs_aio_state = state->vfs_aio_state;
1370 return state->ret;
1371 }
1372
1373 static int vfs_gluster_stat(struct vfs_handle_struct *handle,
1374 struct smb_filename *smb_fname)
1375 {
1376 struct stat st;
1377 int ret;
1378
1379 START_PROFILE(syscall_stat);
1380 ret = glfs_stat(handle->data, smb_fname->base_name, &st);
1381 if (ret == 0) {
1382 smb_stat_ex_from_stat(&smb_fname->st, &st);
1383 }
1384 if (ret < 0 && errno != ENOENT) {
1385 DEBUG(0, ("glfs_stat(%s) failed: %s\n",
1386 smb_fname->base_name, strerror(errno)));
1387 }
1388 END_PROFILE(syscall_stat);
1389
1390 return ret;
1391 }
1392
1393 static int vfs_gluster_fstat(struct vfs_handle_struct *handle,
1394 files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1395 {
1396 struct stat st;
1397 int ret;
1398 glfs_fd_t *glfd = NULL;
1399
1400 START_PROFILE(syscall_fstat);
1401
1402 glfd = vfs_gluster_fetch_glfd(handle, fsp);
1403 if (glfd == NULL) {
1404 END_PROFILE(syscall_fstat);
1405 DBG_ERR("Failed to fetch gluster fd\n");
1406 return -1;
1407 }
1408
1409 ret = glfs_fstat(glfd, &st);
1410 if (ret == 0) {
1411 smb_stat_ex_from_stat(sbuf, &st);
1412 }
1413 if (ret < 0) {
1414 DEBUG(0, ("glfs_fstat(%d) failed: %s\n",
1415 fsp_get_io_fd(fsp), strerror(errno)));
1416 }
1417 END_PROFILE(syscall_fstat);
1418
1419 return ret;
1420 }
1421
1422 static int vfs_gluster_lstat(struct vfs_handle_struct *handle,
1423 struct smb_filename *smb_fname)
1424 {
1425 struct stat st;
1426 int ret;
1427
1428 START_PROFILE(syscall_lstat);
1429 ret = glfs_lstat(handle->data, smb_fname->base_name, &st);
1430 if (ret == 0) {
1431 smb_stat_ex_from_stat(&smb_fname->st, &st);
1432 }
1433 if (ret < 0 && errno != ENOENT) {
1434 DEBUG(0, ("glfs_lstat(%s) failed: %s\n",
1435 smb_fname->base_name, strerror(errno)));
1436 }
1437 END_PROFILE(syscall_lstat);
1438
1439 return ret;
1440 }
1441
1442 static uint64_t vfs_gluster_get_alloc_size(struct vfs_handle_struct *handle,
1443 files_struct *fsp,
1444 const SMB_STRUCT_STAT *sbuf)
1445 {
1446 uint64_t ret;
1447
1448 START_PROFILE(syscall_get_alloc_size);
1449 ret = sbuf->st_ex_blocks * 512;
1450 END_PROFILE(syscall_get_alloc_size);
1451
1452 return ret;
1453 }
1454
1455 static int vfs_gluster_unlinkat(struct vfs_handle_struct *handle,
1456 struct files_struct *dirfsp,
1457 const struct smb_filename *smb_fname,
1458 int flags)
1459 {
1460 struct smb_filename *full_fname = NULL;
1461 int ret;
1462
1463 START_PROFILE(syscall_unlinkat);
1464
1465 full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1466 dirfsp,
1467 smb_fname);
1468 if (full_fname == NULL) {
1469 END_PROFILE(syscall_unlinkat);
1470 return -1;
1471 }
1472
1473 if (flags & AT_REMOVEDIR) {
1474 ret = glfs_rmdir(handle->data, full_fname->base_name);
1475 } else {
1476 ret = glfs_unlink(handle->data, full_fname->base_name);
1477 }
1478 TALLOC_FREE(full_fname);
1479 END_PROFILE(syscall_unlinkat);
1480
1481 return ret;
1482 }
1483
1484 static int vfs_gluster_fchmod(struct vfs_handle_struct *handle,
1485 files_struct *fsp, mode_t mode)
1486 {
1487 int ret;
1488 glfs_fd_t *glfd = NULL;
1489
1490 START_PROFILE(syscall_fchmod);
1491
1492 glfd = vfs_gluster_fetch_glfd(handle, fsp);
1493 if (glfd == NULL) {
1494 END_PROFILE(syscall_fchmod);
1495 DBG_ERR("Failed to fetch gluster fd\n");
1496 return -1;
1497 }
1498
1499 if (!fsp->fsp_flags.is_pathref) {
1500 /*
1501 * We can use an io_fd to remove xattrs.
1502 */
1503 ret = glfs_fchmod(glfd, mode);
1504 } else {
1505 /*
1506 * This is no longer a handle based call.
1507 */
1508 ret = glfs_chmod(handle->data, fsp->fsp_name->base_name, mode);
1509 }
1510 END_PROFILE(syscall_fchmod);
1511
1512 return ret;
1513 }
1514
1515 static int vfs_gluster_fchown(struct vfs_handle_struct *handle,
1516 files_struct *fsp, uid_t uid, gid_t gid)
1517 {
1518 int ret;
1519 glfs_fd_t *glfd = NULL;
1520
1521 START_PROFILE(syscall_fchown);
1522
1523 glfd = vfs_gluster_fetch_glfd(handle, fsp);
1524 if (glfd == NULL) {
1525 END_PROFILE(syscall_fchown);
1526 DBG_ERR("Failed to fetch gluster fd\n");
1527 return -1;
1528 }
1529
1530 ret = glfs_fchown(glfd, uid, gid);
1531 END_PROFILE(syscall_fchown);
1532
1533 return ret;
1534 }
1535
1536 static int vfs_gluster_lchown(struct vfs_handle_struct *handle,
1537 const struct smb_filename *smb_fname,
1538 uid_t uid,
1539 gid_t gid)
1540 {
1541 int ret;
1542
1543 START_PROFILE(syscall_lchown);
1544 ret = glfs_lchown(handle->data, smb_fname->base_name, uid, gid);
1545 END_PROFILE(syscall_lchown);
1546
1547 return ret;
1548 }
1549
1550 static int vfs_gluster_chdir(struct vfs_handle_struct *handle,
1551 const struct smb_filename *smb_fname)
1552 {
1553 int ret;
1554
1555 START_PROFILE(syscall_chdir);
1556 ret = glfs_chdir(handle->data, smb_fname->base_name);
1557 END_PROFILE(syscall_chdir);
1558
1559 return ret;
1560 }
1561
1562 static struct smb_filename *vfs_gluster_getwd(struct vfs_handle_struct *handle,
1563 TALLOC_CTX *ctx)
1564 {
1565 char cwd[PATH_MAX] = { '\0' };
1566 char *ret;
1567 struct smb_filename *smb_fname = NULL;
1568
1569 START_PROFILE(syscall_getwd);
1570
1571 ret = glfs_getcwd(handle->data, cwd, PATH_MAX - 1);
1572 END_PROFILE(syscall_getwd);
1573
1574 if (ret == NULL) {
1575 return NULL;
1576 }
1577 smb_fname = synthetic_smb_fname(ctx,
1578 ret,
1579 NULL,
1580 NULL,
1581 0,
1582 0);
1583 return smb_fname;
1584 }
1585
1586 static int vfs_gluster_fntimes(struct vfs_handle_struct *handle,
1587 files_struct *fsp,
1588 struct smb_file_time *ft)
1589 {
1590 int ret = -1;
1591 struct timespec times[2];
1592 glfs_fd_t *glfd = NULL;
1593
1594 START_PROFILE(syscall_fntimes);
1595
1596 if (is_omit_timespec(&ft->atime)) {
1597 times[0].tv_sec = fsp->fsp_name->st.st_ex_atime.tv_sec;
1598 times[0].tv_nsec = fsp->fsp_name->st.st_ex_atime.tv_nsec;
1599 } else {
1600 times[0].tv_sec = ft->atime.tv_sec;
1601 times[0].tv_nsec = ft->atime.tv_nsec;
1602 }
1603
1604 if (is_omit_timespec(&ft->mtime)) {
1605 times[1].tv_sec = fsp->fsp_name->st.st_ex_mtime.tv_sec;
1606 times[1].tv_nsec = fsp->fsp_name->st.st_ex_mtime.tv_nsec;
1607 } else {
1608 times[1].tv_sec = ft->mtime.tv_sec;
1609 times[1].tv_nsec = ft->mtime.tv_nsec;
1610 }
1611
1612 if ((timespec_compare(&times[0],
1613 &fsp->fsp_name->st.st_ex_atime) == 0) &&
1614 (timespec_compare(&times[1],
1615 &fsp->fsp_name->st.st_ex_mtime) == 0)) {
1616 END_PROFILE(syscall_fntimes);
1617 return 0;
1618 }
1619
1620 glfd = vfs_gluster_fetch_glfd(handle, fsp);
1621 if (glfd == NULL) {
1622 END_PROFILE(syscall_fntimes);
1623 DBG_ERR("Failed to fetch gluster fd\n");
1624 return -1;
1625 }
1626
1627 ret = glfs_futimens(glfd, times);
1628 END_PROFILE(syscall_fntimes);
1629
1630 return ret;
1631 }
1632
1633 static int vfs_gluster_ftruncate(struct vfs_handle_struct *handle,
1634 files_struct *fsp, off_t offset)
1635 {
1636 int ret;
1637 glfs_fd_t *glfd = NULL;
1638
1639 START_PROFILE(syscall_ftruncate);
1640
1641 glfd = vfs_gluster_fetch_glfd(handle, fsp);
1642 if (glfd == NULL) {
1643 END_PROFILE(syscall_ftruncate);
1644 DBG_ERR("Failed to fetch gluster fd\n");
1645 return -1;
1646 }
1647
1648 #ifdef HAVE_GFAPI_VER_7_6
1649 ret = glfs_ftruncate(glfd, offset, NULL, NULL);
1650 #else
1651 ret = glfs_ftruncate(glfd, offset);
1652 #endif
1653 END_PROFILE(syscall_ftruncate);
1654
1655 return ret;
1656 }
1657
1658 static int vfs_gluster_fallocate(struct vfs_handle_struct *handle,
1659 struct files_struct *fsp,
1660 uint32_t mode,
1661 off_t offset, off_t len)
1662 {
1663 int ret;
1664 #ifdef HAVE_GFAPI_VER_6
1665 glfs_fd_t *glfd = NULL;
1666 int keep_size, punch_hole;
1667
1668 START_PROFILE(syscall_fallocate);
1669
1670 glfd = vfs_gluster_fetch_glfd(handle, fsp);
1671 if (glfd == NULL) {
1672 END_PROFILE(syscall_fallocate);
1673 DBG_ERR("Failed to fetch gluster fd\n");
1674 return -1;
1675 }
1676
1677 keep_size = mode & VFS_FALLOCATE_FL_KEEP_SIZE;
1678 punch_hole = mode & VFS_FALLOCATE_FL_PUNCH_HOLE;
1679
1680 mode &= ~(VFS_FALLOCATE_FL_KEEP_SIZE|VFS_FALLOCATE_FL_PUNCH_HOLE);
1681 if (mode != 0) {
1682 END_PROFILE(syscall_fallocate);
1683 errno = ENOTSUP;
1684 return -1;
1685 }
1686
1687 if (punch_hole) {
1688 ret = glfs_discard(glfd, offset, len);
1689 if (ret != 0) {
1690 DBG_DEBUG("glfs_discard failed: %s\n",
1691 strerror(errno));
1692 }
1693 }
1694
1695 ret = glfs_fallocate(glfd, keep_size, offset, len);
1696 END_PROFILE(syscall_fallocate);
1697 #else
1698 errno = ENOTSUP;
1699 ret = -1;
1700 #endif
1701 return ret;
1702 }
1703
1704 static struct smb_filename *vfs_gluster_realpath(struct vfs_handle_struct *handle,
1705 TALLOC_CTX *ctx,
1706 const struct smb_filename *smb_fname)
1707 {
1708 char *result = NULL;
1709 struct smb_filename *result_fname = NULL;
1710 char *resolved_path = NULL;
1711
1712 START_PROFILE(syscall_realpath);
1713
1714 resolved_path = SMB_MALLOC_ARRAY(char, PATH_MAX+1);
1715 if (resolved_path == NULL) {
1716 END_PROFILE(syscall_realpath);
1717 errno = ENOMEM;
1718 return NULL;
1719 }
1720
1721 result = glfs_realpath(handle->data,
1722 smb_fname->base_name,
1723 resolved_path);
1724 if (result != NULL) {
1725 result_fname = synthetic_smb_fname(ctx,
1726 result,
1727 NULL,
1728 NULL,
1729 0,
1730 0);
1731 }
1732
1733 SAFE_FREE(resolved_path);
1734 END_PROFILE(syscall_realpath);
1735
1736 return result_fname;
1737 }
1738
1739 static bool vfs_gluster_lock(struct vfs_handle_struct *handle,
1740 files_struct *fsp, int op, off_t offset,
1741 off_t count, int type)
1742 {
1743 struct flock flock = { 0, };
1744 int ret;
1745 glfs_fd_t *glfd = NULL;
1746 bool ok = false;
1747
1748 START_PROFILE(syscall_fcntl_lock);
1749
1750 glfd = vfs_gluster_fetch_glfd(handle, fsp);
1751 if (glfd == NULL) {
1752 DBG_ERR("Failed to fetch gluster fd\n");
1753 ok = false;
1754 goto out;
1755 }
1756
1757 flock.l_type = type;
1758 flock.l_whence = SEEK_SET;
1759 flock.l_start = offset;
1760 flock.l_len = count;
1761 flock.l_pid = 0;
1762
1763 ret = glfs_posix_lock(glfd, op, &flock);
1764
1765 if (op == F_GETLK) {
1766 /* lock query, true if someone else has locked */
1767 if ((ret != -1) &&
1768 (flock.l_type != F_UNLCK) &&
1769 (flock.l_pid != 0) && (flock.l_pid != getpid())) {
1770 ok = true;
1771 goto out;
1772 }
1773 /* not me */
1774 ok = false;
1775 goto out;
1776 }
1777
1778 if (ret == -1) {
1779 ok = false;
1780 goto out;
1781 }
1782
1783 ok = true;
1784 out:
1785 END_PROFILE(syscall_fcntl_lock);
1786
1787 return ok;
1788 }
1789
1790 static int vfs_gluster_filesystem_sharemode(struct vfs_handle_struct *handle,
1791 files_struct *fsp,
1792 uint32_t share_access,
1793 uint32_t access_mask)
1794 {
1795 errno = ENOSYS;
1796 return -1;
1797 }
1798
1799 static int vfs_gluster_fcntl(vfs_handle_struct *handle,
1800 files_struct *fsp, int cmd, va_list cmd_arg)
1801 {
1802 /*
1803 * SMB_VFS_FCNTL() is currently only called by vfs_set_blocking() to
1804 * clear O_NONBLOCK, etc for LOCK_MAND and FIFOs. Ignore it.
1805 */
1806 if (cmd == F_GETFL) {
1807 return 0;
1808 } else if (cmd == F_SETFL) {
1809 va_list dup_cmd_arg;
1810 int opt;
1811
1812 va_copy(dup_cmd_arg, cmd_arg);
1813 opt = va_arg(dup_cmd_arg, int);
1814 va_end(dup_cmd_arg);
1815 if (opt == 0) {
1816 return 0;
1817 }
1818 DBG_ERR("unexpected fcntl SETFL(%d)\n", opt);
1819 goto err_out;
1820 }
1821 DBG_ERR("unexpected fcntl: %d\n", cmd);
1822 err_out:
1823 errno = EINVAL;
1824 return -1;
1825 }
1826
1827 static int vfs_gluster_linux_setlease(struct vfs_handle_struct *handle,
1828 files_struct *fsp, int leasetype)
1829 {
1830 errno = ENOSYS;
1831 return -1;
1832 }
1833
1834 static bool vfs_gluster_getlock(struct vfs_handle_struct *handle,
1835 files_struct *fsp, off_t *poffset,
1836 off_t *pcount, int *ptype, pid_t *ppid)
1837 {
1838 struct flock flock = { 0, };
1839 int ret;
1840 glfs_fd_t *glfd = NULL;
1841
1842 START_PROFILE(syscall_fcntl_getlock);
1843
1844 glfd = vfs_gluster_fetch_glfd(handle, fsp);
1845 if (glfd == NULL) {
1846 END_PROFILE(syscall_fcntl_getlock);
1847 DBG_ERR("Failed to fetch gluster fd\n");
1848 return false;
1849 }
1850
1851 flock.l_type = *ptype;
1852 flock.l_whence = SEEK_SET;
1853 flock.l_start = *poffset;
1854 flock.l_len = *pcount;
1855 flock.l_pid = 0;
1856
1857 ret = glfs_posix_lock(glfd, F_GETLK, &flock);
1858
1859 if (ret == -1) {
1860 END_PROFILE(syscall_fcntl_getlock);
1861 return false;
1862 }
1863
1864 *ptype = flock.l_type;
1865 *poffset = flock.l_start;
1866 *pcount = flock.l_len;
1867 *ppid = flock.l_pid;
1868 END_PROFILE(syscall_fcntl_getlock);
1869
1870 return true;
1871 }
1872
1873 static int vfs_gluster_symlinkat(struct vfs_handle_struct *handle,
1874 const struct smb_filename *link_target,
1875 struct files_struct *dirfsp,
1876 const struct smb_filename *new_smb_fname)
1877 {
1878 struct smb_filename *full_fname = NULL;
1879 int ret;
1880
1881 START_PROFILE(syscall_symlinkat);
1882
1883 full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1884 dirfsp,
1885 new_smb_fname);
1886 if (full_fname == NULL) {
1887 END_PROFILE(syscall_symlinkat);
1888 return -1;
1889 }
1890
1891 ret = glfs_symlink(handle->data,
1892 link_target->base_name,
1893 full_fname->base_name);
1894
1895 TALLOC_FREE(full_fname);
1896
1897 END_PROFILE(syscall_symlinkat);
1898
1899 return ret;
1900 }
1901
1902 static int vfs_gluster_readlinkat(struct vfs_handle_struct *handle,
1903 const struct files_struct *dirfsp,
1904 const struct smb_filename *smb_fname,
1905 char *buf,
1906 size_t bufsiz)
1907 {
1908 struct smb_filename *full_fname = NULL;
1909 int ret;
1910
1911 START_PROFILE(syscall_readlinkat);
1912
1913 full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1914 dirfsp,
1915 smb_fname);
1916 if (full_fname == NULL) {
1917 END_PROFILE(syscall_readlinkat);
1918 return -1;
1919 }
1920
1921 ret = glfs_readlink(handle->data, full_fname->base_name, buf, bufsiz);
1922
1923 TALLOC_FREE(full_fname);
1924
1925 END_PROFILE(syscall_readlinkat);
1926
1927 return ret;
1928 }
1929
1930 static int vfs_gluster_linkat(struct vfs_handle_struct *handle,
1931 files_struct *srcfsp,
1932 const struct smb_filename *old_smb_fname,
1933 files_struct *dstfsp,
1934 const struct smb_filename *new_smb_fname,
1935 int flags)
1936 {
1937 int ret;
1938 struct smb_filename *full_fname_old = NULL;
1939 struct smb_filename *full_fname_new = NULL;
1940
1941 START_PROFILE(syscall_linkat);
1942
1943 full_fname_old = full_path_from_dirfsp_atname(talloc_tos(),
1944 srcfsp,
1945 old_smb_fname);
1946 if (full_fname_old == NULL) {
1947 END_PROFILE(syscall_linkat);
1948 return -1;
1949 }
1950 full_fname_new = full_path_from_dirfsp_atname(talloc_tos(),
1951 dstfsp,
1952 new_smb_fname);
1953 if (full_fname_new == NULL) {
1954 TALLOC_FREE(full_fname_old);
1955 END_PROFILE(syscall_linkat);
1956 return -1;
1957 }
1958
1959 ret = glfs_link(handle->data,
1960 full_fname_old->base_name,
1961 full_fname_new->base_name);
1962
1963 TALLOC_FREE(full_fname_old);
1964 TALLOC_FREE(full_fname_new);
1965 END_PROFILE(syscall_linkat);
1966
1967 return ret;
1968 }
1969
1970 static int vfs_gluster_mknodat(struct vfs_handle_struct *handle,
1971 files_struct *dirfsp,
1972 const struct smb_filename *smb_fname,
1973 mode_t mode,
1974 SMB_DEV_T dev)
1975 {
1976 struct smb_filename *full_fname = NULL;
1977 int ret;
1978
1979 START_PROFILE(syscall_mknodat);
1980
1981 full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1982 dirfsp,
1983 smb_fname);
1984 if (full_fname == NULL) {
1985 END_PROFILE(syscall_mknodat);
1986 return -1;
1987 }
1988
1989 ret = glfs_mknod(handle->data, full_fname->base_name, mode, dev);
1990
1991 TALLOC_FREE(full_fname);
1992
1993 END_PROFILE(syscall_mknodat);
1994
1995 return ret;
1996 }
1997
1998 static int vfs_gluster_fchflags(struct vfs_handle_struct *handle,
1999 struct files_struct *fsp,
2000 unsigned int flags)
2001 {
2002 errno = ENOSYS;
2003 return -1;
2004 }
2005
2006 static int vfs_gluster_get_real_filename(struct vfs_handle_struct *handle,
2007 const struct smb_filename *path,
2008 const char *name,
2009 TALLOC_CTX *mem_ctx,
2010 char **found_name)
2011 {
2012 int ret;
2013 char key_buf[GLUSTER_NAME_MAX + 64];
2014 char val_buf[GLUSTER_NAME_MAX + 1];
2015
2016 if (strlen(name) >= GLUSTER_NAME_MAX) {
2017 errno = ENAMETOOLONG;
2018 return -1;
2019 }
2020
2021 snprintf(key_buf, GLUSTER_NAME_MAX + 64,
2022 "glusterfs.get_real_filename:%s", name);
2023
2024 ret = glfs_getxattr(handle->data, path->base_name, key_buf, val_buf,
2025 GLUSTER_NAME_MAX + 1);
2026 if (ret == -1) {
2027 if (errno == ENOATTR) {
2028 errno = ENOENT;
2029 }
2030 return -1;
2031 }
2032
2033 *found_name = talloc_strdup(mem_ctx, val_buf);
2034 if (found_name[0] == NULL) {
2035 errno = ENOMEM;
2036 return -1;
2037 }
2038 return 0;
2039 }
2040
2041 static const char *vfs_gluster_connectpath(struct vfs_handle_struct *handle,
2042 const struct smb_filename *smb_fname)
2043 {
2044 return handle->conn->connectpath;
2045 }
2046
2047 /* EA Operations */
2048
2049 static ssize_t vfs_gluster_fgetxattr(struct vfs_handle_struct *handle,
2050 files_struct *fsp, const char *name,
2051 void *value, size_t size)
2052 {
2053 glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
2054 if (glfd == NULL) {
2055 DBG_ERR("Failed to fetch gluster fd\n");
2056 return -1;
2057 }
2058
2059 return glfs_fgetxattr(glfd, name, value, size);
2060 }
2061
2062 static ssize_t vfs_gluster_flistxattr(struct vfs_handle_struct *handle,
2063 files_struct *fsp, char *list,
2064 size_t size)
2065 {
2066 glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
2067 if (glfd == NULL) {
2068 DBG_ERR("Failed to fetch gluster fd\n");
2069 return -1;
2070 }
2071 if (!fsp->fsp_flags.is_pathref) {
2072 /*
2073 * We can use an io_fd to list xattrs.
2074 */
2075 return glfs_flistxattr(glfd, list, size);
2076 } else {
2077 /*
2078 * This is no longer a handle based call.
2079 */
2080 return glfs_listxattr(handle->data,
2081 fsp->fsp_name->base_name,
2082 list,
2083 size);
2084 }
2085 }
2086
2087 static int vfs_gluster_fremovexattr(struct vfs_handle_struct *handle,
2088 files_struct *fsp, const char *name)
2089 {
2090 glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
2091 if (glfd == NULL) {
2092 DBG_ERR("Failed to fetch gluster fd\n");
2093 return -1;
2094 }
2095 if (!fsp->fsp_flags.is_pathref) {
2096 /*
2097 * We can use an io_fd to remove xattrs.
2098 */
2099 return glfs_fremovexattr(glfd, name);
2100 } else {
2101 /*
2102 * This is no longer a handle based call.
2103 */
2104 return glfs_removexattr(handle->data,
2105 fsp->fsp_name->base_name,
2106 name);
2107 }
2108 }
2109
2110 static int vfs_gluster_fsetxattr(struct vfs_handle_struct *handle,
2111 files_struct *fsp, const char *name,
2112 const void *value, size_t size, int flags)
2113 {
2114 glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
2115 if (glfd == NULL) {
2116 DBG_ERR("Failed to fetch gluster fd\n");
2117 return -1;
2118 }
2119
2120 if (!fsp->fsp_flags.is_pathref) {
2121 /*
2122 * We can use an io_fd to set xattrs.
2123 */
2124 return glfs_fsetxattr(glfd, name, value, size, flags);
2125 } else {
2126 /*
2127 * This is no longer a handle based call.
2128 */
2129 return glfs_setxattr(handle->data,
2130 fsp->fsp_name->base_name,
2131 name,
2132 value,
2133 size,
2134 flags);
2135 }
2136 }
2137
2138 /* AIO Operations */
2139
2140 static bool vfs_gluster_aio_force(struct vfs_handle_struct *handle,
2141 files_struct *fsp)
2142 {
2143 return false;
2144 }
2145
2146 static NTSTATUS vfs_gluster_create_dfs_pathat(struct vfs_handle_struct *handle,
2147 struct files_struct *dirfsp,
2148 const struct smb_filename *smb_fname,
2149 const struct referral *reflist,
2150 size_t referral_count)
2151 {
2152 TALLOC_CTX *frame = talloc_stackframe();
2153 NTSTATUS status = NT_STATUS_NO_MEMORY;
2154 int ret;
2155 char *msdfs_link = NULL;
2156 struct smb_filename *full_fname = NULL;
2157
2158 full_fname = full_path_from_dirfsp_atname(talloc_tos(),
2159 dirfsp,
2160 smb_fname);
2161 if (full_fname == NULL) {
2162 goto out;
2163 }
2164
2165 /* Form the msdfs_link contents */
2166 msdfs_link = msdfs_link_string(frame,
2167 reflist,
2168 referral_count);
2169 if (msdfs_link == NULL) {
2170 goto out;
2171 }
2172
2173 ret = glfs_symlink(handle->data,
2174 msdfs_link,
2175 full_fname->base_name);
2176 if (ret == 0) {
2177 status = NT_STATUS_OK;
2178 } else {
2179 status = map_nt_error_from_unix(errno);
2180 }
2181
2182 out:
2183
2184 TALLOC_FREE(frame);
2185 return status;
2186 }
2187
2188 /*
2189 * Read and return the contents of a DFS redirect given a
2190 * pathname. A caller can pass in NULL for ppreflist and
2191 * preferral_count but still determine if this was a
2192 * DFS redirect point by getting NT_STATUS_OK back
2193 * without incurring the overhead of reading and parsing
2194 * the referral contents.
2195 */
2196
2197 static NTSTATUS vfs_gluster_read_dfs_pathat(struct vfs_handle_struct *handle,
2198 TALLOC_CTX *mem_ctx,
2199 struct files_struct *dirfsp,
2200 struct smb_filename *smb_fname,
2201 struct referral **ppreflist,
2202 size_t *preferral_count)
2203 {
2204 NTSTATUS status = NT_STATUS_NO_MEMORY;
2205 size_t bufsize;
2206 char *link_target = NULL;
2207 int referral_len;
2208 bool ok;
2209 #if defined(HAVE_BROKEN_READLINK)
2210 char link_target_buf[PATH_MAX];
2211 #else
2212 char link_target_buf[7];
2213 #endif
2214 struct stat st;
2215 struct smb_filename *full_fname = NULL;
2216 int ret;
2217
2218 if (is_named_stream(smb_fname)) {
2219 status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
2220 goto err;
2221 }
2222
2223 if (ppreflist == NULL && preferral_count == NULL) {
2224 /*
2225 * We're only checking if this is a DFS
2226 * redirect. We don't need to return data.
2227 */
2228 bufsize = sizeof(link_target_buf);
2229 link_target = link_target_buf;
2230 } else {
2231 bufsize = PATH_MAX;
2232 link_target = talloc_array(mem_ctx, char, bufsize);
2233 if (!link_target) {
2234 goto err;
2235 }
2236 }
2237
2238 full_fname = full_path_from_dirfsp_atname(talloc_tos(),
2239 dirfsp,
2240 smb_fname);
2241 if (full_fname == NULL) {
2242 status = NT_STATUS_NO_MEMORY;
2243 goto err;
2244 }
2245
2246 ret = glfs_lstat(handle->data, full_fname->base_name, &st);
2247 if (ret < 0) {
2248 status = map_nt_error_from_unix(errno);
2249 goto err;
2250 }
2251
2252 referral_len = glfs_readlink(handle->data,
2253 full_fname->base_name,
2254 link_target,
2255 bufsize - 1);
2256 if (referral_len < 0) {
2257 if (errno == EINVAL) {
2258 DBG_INFO("%s is not a link.\n", full_fname->base_name);
2259 status = NT_STATUS_OBJECT_TYPE_MISMATCH;
2260 } else {
2261 status = map_nt_error_from_unix(errno);
2262 DBG_ERR("Error reading "
2263 "msdfs link %s: %s\n",
2264 full_fname->base_name,
2265 strerror(errno));
2266 }
2267 goto err;
2268 }
2269 link_target[referral_len] = '\0';
2270
2271 DBG_INFO("%s -> %s\n",
2272 full_fname->base_name,
2273 link_target);
2274
2275 if (!strnequal(link_target, "msdfs:", 6)) {
2276 status = NT_STATUS_OBJECT_TYPE_MISMATCH;
2277 goto err;
2278 }
2279
2280 if (ppreflist == NULL && preferral_count == NULL) {
2281 /* Early return for checking if this is a DFS link. */
2282 TALLOC_FREE(full_fname);
2283 smb_stat_ex_from_stat(&smb_fname->st, &st);
2284 return NT_STATUS_OK;
2285 }
2286
2287 ok = parse_msdfs_symlink(mem_ctx,
2288 lp_msdfs_shuffle_referrals(SNUM(handle->conn)),
2289 link_target,
2290 ppreflist,
2291 preferral_count);
2292
2293 if (ok) {
2294 smb_stat_ex_from_stat(&smb_fname->st, &st);
2295 status = NT_STATUS_OK;
2296 } else {
2297 status = NT_STATUS_NO_MEMORY;
2298 }
2299
2300 err:
2301
2302 if (link_target != link_target_buf) {
2303 TALLOC_FREE(link_target);
2304 }
2305 TALLOC_FREE(full_fname);
2306 return status;
2307 }
2308
2309 static struct vfs_fn_pointers glusterfs_fns = {
2310
2311 /* Disk Operations */
2312
2313 .connect_fn = vfs_gluster_connect,
2314 .disconnect_fn = vfs_gluster_disconnect,
2315 .disk_free_fn = vfs_gluster_disk_free,
2316 .get_quota_fn = vfs_gluster_get_quota,
2317 .set_quota_fn = vfs_gluster_set_quota,
2318 .statvfs_fn = vfs_gluster_statvfs,
2319 .fs_capabilities_fn = vfs_gluster_fs_capabilities,
2320
2321 .get_dfs_referrals_fn = NULL,
2322
2323 /* Directory Operations */
2324
2325 .fdopendir_fn = vfs_gluster_fdopendir,
2326 .readdir_fn = vfs_gluster_readdir,
2327 .seekdir_fn = vfs_gluster_seekdir,
2328 .telldir_fn = vfs_gluster_telldir,
2329 .rewind_dir_fn = vfs_gluster_rewinddir,
2330 .mkdirat_fn = vfs_gluster_mkdirat,
2331 .closedir_fn = vfs_gluster_closedir,
2332
2333 /* File Operations */
2334
2335 .openat_fn = vfs_gluster_openat,
2336 .create_file_fn = NULL,
2337 .close_fn = vfs_gluster_close,
2338 .pread_fn = vfs_gluster_pread,
2339 .pread_send_fn = vfs_gluster_pread_send,
2340 .pread_recv_fn = vfs_gluster_pread_recv,
2341 .pwrite_fn = vfs_gluster_pwrite,
2342 .pwrite_send_fn = vfs_gluster_pwrite_send,
2343 .pwrite_recv_fn = vfs_gluster_pwrite_recv,
2344 .lseek_fn = vfs_gluster_lseek,
2345 .sendfile_fn = vfs_gluster_sendfile,
2346 .recvfile_fn = vfs_gluster_recvfile,
2347 .renameat_fn = vfs_gluster_renameat,
2348 .fsync_send_fn = vfs_gluster_fsync_send,
2349 .fsync_recv_fn = vfs_gluster_fsync_recv,
2350
2351 .stat_fn = vfs_gluster_stat,
2352 .fstat_fn = vfs_gluster_fstat,
2353 .lstat_fn = vfs_gluster_lstat,
2354 .get_alloc_size_fn = vfs_gluster_get_alloc_size,
2355 .unlinkat_fn = vfs_gluster_unlinkat,
2356
2357 .fchmod_fn = vfs_gluster_fchmod,
2358 .fchown_fn = vfs_gluster_fchown,
2359 .lchown_fn = vfs_gluster_lchown,
2360 .chdir_fn = vfs_gluster_chdir,
2361 .getwd_fn = vfs_gluster_getwd,
2362 .fntimes_fn = vfs_gluster_fntimes,
2363 .ftruncate_fn = vfs_gluster_ftruncate,
2364 .fallocate_fn = vfs_gluster_fallocate,
2365 .lock_fn = vfs_gluster_lock,
2366 .filesystem_sharemode_fn = vfs_gluster_filesystem_sharemode,
2367 .fcntl_fn = vfs_gluster_fcntl,
2368 .linux_setlease_fn = vfs_gluster_linux_setlease,
2369 .getlock_fn = vfs_gluster_getlock,
2370 .symlinkat_fn = vfs_gluster_symlinkat,
2371 .readlinkat_fn = vfs_gluster_readlinkat,
2372 .linkat_fn = vfs_gluster_linkat,
2373 .mknodat_fn = vfs_gluster_mknodat,
2374 .realpath_fn = vfs_gluster_realpath,
2375 .fchflags_fn = vfs_gluster_fchflags,
2376 .file_id_create_fn = NULL,
2377 .fstreaminfo_fn = NULL,
2378 .get_real_filename_fn = vfs_gluster_get_real_filename,
2379 .connectpath_fn = vfs_gluster_connectpath,
2380 .create_dfs_pathat_fn = vfs_gluster_create_dfs_pathat,
2381 .read_dfs_pathat_fn = vfs_gluster_read_dfs_pathat,
2382
2383 .brl_lock_windows_fn = NULL,
2384 .brl_unlock_windows_fn = NULL,
2385 .strict_lock_check_fn = NULL,
2386 .translate_name_fn = NULL,
2387 .fsctl_fn = NULL,
2388
2389 /* NT ACL Operations */
2390 .fget_nt_acl_fn = NULL,
2391 .fset_nt_acl_fn = NULL,
2392 .audit_file_fn = NULL,
2393
2394 /* Posix ACL Operations */
2395 .sys_acl_get_fd_fn = posixacl_xattr_acl_get_fd,
2396 .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
2397 .sys_acl_set_fd_fn = posixacl_xattr_acl_set_fd,
2398 .sys_acl_delete_def_fd_fn = posixacl_xattr_acl_delete_def_fd,
2399
2400 /* EA Operations */
2401 .getxattrat_send_fn = vfs_not_implemented_getxattrat_send,
2402 .getxattrat_recv_fn = vfs_not_implemented_getxattrat_recv,
2403 .fgetxattr_fn = vfs_gluster_fgetxattr,
2404 .flistxattr_fn = vfs_gluster_flistxattr,
2405 .fremovexattr_fn = vfs_gluster_fremovexattr,
2406 .fsetxattr_fn = vfs_gluster_fsetxattr,
2407
2408 /* AIO Operations */
2409 .aio_force_fn = vfs_gluster_aio_force,
2410
2411 /* Durable handle Operations */
2412 .durable_cookie_fn = NULL,
2413 .durable_disconnect_fn = NULL,
2414 .durable_reconnect_fn = NULL,
2415 };
2416
2417 static_decl_vfs;
2418 NTSTATUS vfs_glusterfs_init(TALLOC_CTX *ctx)
2419 {
2420 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
2421 "glusterfs", &glusterfs_fns);
2422 }
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