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ldb: Fix ldb public library header files being unusable
[Samba.git] / source3 / modules / vfs_glusterfs.c
blob00b4cdd4698da6f06f4f751fbd1fd1a1c2016795
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 "lib/util/util_file.h"
45 #include "smbd/globals.h"
46 #include "lib/util/sys_rw.h"
47 #include "smbprofile.h"
48 #include "modules/posixacl_xattr.h"
49 #include "lib/pthreadpool/pthreadpool_tevent.h"
50
51 #define DEFAULT_VOLFILE_SERVER "localhost"
52 #define GLUSTER_NAME_MAX 255
53
54 /**
55 * Helper to convert struct stat to struct stat_ex.
56 */
57 static void smb_stat_ex_from_stat(struct stat_ex *dst, const struct stat *src)
58 {
59 ZERO_STRUCTP(dst);
60
61 dst->st_ex_dev = src->st_dev;
62 dst->st_ex_ino = src->st_ino;
63 dst->st_ex_mode = src->st_mode;
64 dst->st_ex_nlink = src->st_nlink;
65 dst->st_ex_uid = src->st_uid;
66 dst->st_ex_gid = src->st_gid;
67 dst->st_ex_rdev = src->st_rdev;
68 dst->st_ex_size = src->st_size;
69 dst->st_ex_atime.tv_sec = src->st_atime;
70 dst->st_ex_mtime.tv_sec = src->st_mtime;
71 dst->st_ex_ctime.tv_sec = src->st_ctime;
72 dst->st_ex_btime.tv_sec = src->st_mtime;
73 dst->st_ex_blksize = src->st_blksize;
74 dst->st_ex_blocks = src->st_blocks;
75 #ifdef STAT_HAVE_NSEC
76 dst->st_ex_atime.tv_nsec = src->st_atime_nsec;
77 dst->st_ex_mtime.tv_nsec = src->st_mtime_nsec;
78 dst->st_ex_ctime.tv_nsec = src->st_ctime_nsec;
79 dst->st_ex_btime.tv_nsec = src->st_mtime_nsec;
80 #endif
81 }
82
83 /* pre-opened glfs_t */
84
85 static struct glfs_preopened {
86 char *volume;
87 char *connectpath;
88 glfs_t *fs;
89 int ref;
90 struct glfs_preopened *next, *prev;
91 } *glfs_preopened;
92
93
94 static int glfs_set_preopened(const char *volume, const char *connectpath, glfs_t *fs)
95 {
96 struct glfs_preopened *entry = NULL;
97
98 entry = talloc_zero(NULL, struct glfs_preopened);
99 if (!entry) {
100 errno = ENOMEM;
101 return -1;
102 }
103
104 entry->volume = talloc_strdup(entry, volume);
105 if (!entry->volume) {
106 talloc_free(entry);
107 errno = ENOMEM;
108 return -1;
109 }
110
111 entry->connectpath = talloc_strdup(entry, connectpath);
112 if (entry->connectpath == NULL) {
113 talloc_free(entry);
114 errno = ENOMEM;
115 return -1;
116 }
117
118 entry->fs = fs;
119 entry->ref = 1;
120
121 DLIST_ADD(glfs_preopened, entry);
122
123 return 0;
124 }
125
126 static glfs_t *glfs_find_preopened(const char *volume, const char *connectpath)
127 {
128 struct glfs_preopened *entry = NULL;
129
130 for (entry = glfs_preopened; entry; entry = entry->next) {
131 if (strcmp(entry->volume, volume) == 0 &&
132 strcmp(entry->connectpath, connectpath) == 0)
133 {
134 entry->ref++;
135 return entry->fs;
136 }
137 }
138
139 return NULL;
140 }
141
142 static void glfs_clear_preopened(glfs_t *fs)
143 {
144 struct glfs_preopened *entry = NULL;
145
146 for (entry = glfs_preopened; entry; entry = entry->next) {
147 if (entry->fs == fs) {
148 if (--entry->ref)
149 return;
150
151 DLIST_REMOVE(glfs_preopened, entry);
152
153 glfs_fini(entry->fs);
154 talloc_free(entry);
155 break;
156 }
157 }
158 }
159
160 static int vfs_gluster_set_volfile_servers(glfs_t *fs,
161 const char *volfile_servers)
162 {
163 char *server = NULL;
164 size_t server_count = 0;
165 size_t server_success = 0;
166 int ret = -1;
167 TALLOC_CTX *frame = talloc_stackframe();
168
169 DBG_INFO("servers list %s\n", volfile_servers);
170
171 while (next_token_talloc(frame, &volfile_servers, &server, " \t")) {
172 char *transport = NULL;
173 char *host = NULL;
174 int port = 0;
175
176 server_count++;
177 DBG_INFO("server %zu %s\n", server_count, server);
178
179 /* Determine the transport type */
180 if (strncmp(server, "unix+", 5) == 0) {
181 port = 0;
182 transport = talloc_strdup(frame, "unix");
183 if (!transport) {
184 errno = ENOMEM;
185 goto out;
186 }
187 host = talloc_strdup(frame, server + 5);
188 if (!host) {
189 errno = ENOMEM;
190 goto out;
191 }
192 } else {
193 char *p = NULL;
194 char *port_index = NULL;
195
196 if (strncmp(server, "tcp+", 4) == 0) {
197 server += 4;
198 }
199
200 /* IPv6 is enclosed in []
201 * ':' before ']' is part of IPv6
202 * ':' after ']' indicates port
203 */
204 p = server;
205 if (server[0] == '[') {
206 server++;
207 p = index(server, ']');
208 if (p == NULL) {
209 /* Malformed IPv6 */
210 continue;
211 }
212 p[0] = '\0';
213 p++;
214 }
215
216 port_index = index(p, ':');
217
218 if (port_index == NULL) {
219 port = 0;
220 } else {
221 port = atoi(port_index + 1);
222 port_index[0] = '\0';
223 }
224 transport = talloc_strdup(frame, "tcp");
225 if (!transport) {
226 errno = ENOMEM;
227 goto out;
228 }
229 host = talloc_strdup(frame, server);
230 if (!host) {
231 errno = ENOMEM;
232 goto out;
233 }
234 }
235
236 DBG_INFO("Calling set volfile server with params "
237 "transport=%s, host=%s, port=%d\n", transport,
238 host, port);
239
240 ret = glfs_set_volfile_server(fs, transport, host, port);
241 if (ret < 0) {
242 DBG_WARNING("Failed to set volfile_server "
243 "transport=%s, host=%s, port=%d (%s)\n",
244 transport, host, port, strerror(errno));
245 } else {
246 server_success++;
247 }
248 }
249
250 out:
251 if (server_count == 0) {
252 ret = -1;
253 } else if (server_success < server_count) {
254 DBG_WARNING("Failed to set %zu out of %zu servers parsed\n",
255 server_count - server_success, server_count);
256 ret = 0;
257 }
258
259 TALLOC_FREE(frame);
260 return ret;
261 }
262
263 /* Disk Operations */
264
265 static int check_for_write_behind_translator(TALLOC_CTX *mem_ctx,
266 glfs_t *fs,
267 const char *volume)
268 {
269 char *buf = NULL;
270 char **lines = NULL;
271 int numlines = 0;
272 int i;
273 char *option;
274 bool write_behind_present = false;
275 size_t newlen;
276 int ret;
277
278 ret = glfs_get_volfile(fs, NULL, 0);
279 if (ret == 0) {
280 DBG_ERR("%s: Failed to get volfile for "
281 "volume (%s): No volfile\n",
282 volume,
283 strerror(errno));
284 return -1;
285 }
286 if (ret > 0) {
287 DBG_ERR("%s: Invalid return %d for glfs_get_volfile for "
288 "volume (%s): No volfile\n",
289 volume,
290 ret,
291 strerror(errno));
292 return -1;
293 }
294
295 newlen = 0 - ret;
296
297 buf = talloc_zero_array(mem_ctx, char, newlen);
298 if (buf == NULL) {
299 return -1;
300 }
301
302 ret = glfs_get_volfile(fs, buf, newlen);
303 if (ret != newlen) {
304 TALLOC_FREE(buf);
305 DBG_ERR("%s: Failed to get volfile for volume (%s)\n",
306 volume, strerror(errno));
307 return -1;
308 }
309
310 option = talloc_asprintf(mem_ctx, "volume %s-write-behind", volume);
311 if (option == NULL) {
312 TALLOC_FREE(buf);
313 return -1;
314 }
315
316 /*
317 * file_lines_parse() plays horrible tricks with
318 * the passed-in talloc pointers and the hierarchy
319 * which makes freeing hard to get right.
320 *
321 * As we know mem_ctx is freed by the caller, after
322 * this point don't free on exit and let the caller
323 * handle it. This violates good Samba coding practice
324 * but we know we're not leaking here.
325 */
326
327 lines = file_lines_parse(buf,
328 newlen,
329 &numlines,
330 mem_ctx);
331 if (lines == NULL || numlines <= 0) {
332 return -1;
333 }
334 /* On success, buf is now a talloc child of lines !! */
335
336 for (i=0; i < numlines; i++) {
337 if (strequal(lines[i], option)) {
338 write_behind_present = true;
339 break;
340 }
341 }
342
343 if (write_behind_present) {
344 DBG_ERR("Write behind translator is enabled for "
345 "volume (%s), refusing to connect! "
346 "Please turn off the write behind translator by calling "
347 "'gluster volume set %s performance.write-behind off' "
348 "on the commandline. "
349 "Check the vfs_glusterfs(8) manpage for "
350 "further details.\n",
351 volume, volume);
352 return -1;
353 }
354
355 return 0;
356 }
357
358 static int vfs_gluster_connect(struct vfs_handle_struct *handle,
359 const char *service,
360 const char *user)
361 {
362 const struct loadparm_substitution *lp_sub =
363 loadparm_s3_global_substitution();
364 const char *volfile_servers;
365 const char *volume;
366 char *logfile;
367 int loglevel;
368 glfs_t *fs = NULL;
369 TALLOC_CTX *tmp_ctx;
370 int ret = 0;
371 bool write_behind_pass_through_set = false;
372
373 tmp_ctx = talloc_new(NULL);
374 if (tmp_ctx == NULL) {
375 ret = -1;
376 goto done;
377 }
378 logfile = lp_parm_substituted_string(tmp_ctx,
379 lp_sub,
380 SNUM(handle->conn),
381 "glusterfs",
382 "logfile",
383 NULL);
384
385 loglevel = lp_parm_int(SNUM(handle->conn), "glusterfs", "loglevel", -1);
386
387 volfile_servers = lp_parm_substituted_string(tmp_ctx,
388 lp_sub,
389 SNUM(handle->conn),
390 "glusterfs",
391 "volfile_server",
392 NULL);
393 if (volfile_servers == NULL) {
394 volfile_servers = DEFAULT_VOLFILE_SERVER;
395 }
396
397 volume = lp_parm_const_string(SNUM(handle->conn), "glusterfs", "volume",
398 NULL);
399 if (volume == NULL) {
400 volume = service;
401 }
402
403 fs = glfs_find_preopened(volume, handle->conn->connectpath);
404 if (fs) {
405 goto done;
406 }
407
408 fs = glfs_new(volume);
409 if (fs == NULL) {
410 ret = -1;
411 goto done;
412 }
413
414 ret = vfs_gluster_set_volfile_servers(fs, volfile_servers);
415 if (ret < 0) {
416 DBG_ERR("Failed to set volfile_servers from list %s\n",
417 volfile_servers);
418 goto done;
419 }
420
421 ret = glfs_set_xlator_option(fs, "*-md-cache", "cache-posix-acl",
422 "true");
423 if (ret < 0) {
424 DEBUG(0, ("%s: Failed to set xlator options\n", volume));
425 goto done;
426 }
427
428 ret = glfs_set_xlator_option(fs, "*-md-cache", "cache-selinux",
429 "true");
430 if (ret < 0) {
431 DEBUG(0, ("%s: Failed to set xlator options\n", volume));
432 goto done;
433 }
434
435 ret = glfs_set_xlator_option(fs, "*-snapview-client",
436 "snapdir-entry-path",
437 handle->conn->connectpath);
438 if (ret < 0) {
439 DEBUG(0, ("%s: Failed to set xlator option:"
440 " snapdir-entry-path\n", volume));
441 goto done;
442 }
443
444 #ifdef HAVE_GFAPI_VER_7_9
445 ret = glfs_set_xlator_option(fs, "*-write-behind", "pass-through",
446 "true");
447 if (ret < 0) {
448 DBG_ERR("%s: Failed to set xlator option: pass-through\n",
449 volume);
450 goto done;
451 }
452 write_behind_pass_through_set = true;
453 #endif
454
455 ret = glfs_set_logging(fs, logfile, loglevel);
456 if (ret < 0) {
457 DEBUG(0, ("%s: Failed to set logfile %s loglevel %d\n",
458 volume, logfile, loglevel));
459 goto done;
460 }
461
462 ret = glfs_init(fs);
463 if (ret < 0) {
464 DEBUG(0, ("%s: Failed to initialize volume (%s)\n",
465 volume, strerror(errno)));
466 goto done;
467 }
468
469 if (!write_behind_pass_through_set) {
470 ret = check_for_write_behind_translator(tmp_ctx, fs, volume);
471 if (ret < 0) {
472 goto done;
473 }
474 }
475
476 ret = glfs_set_preopened(volume, handle->conn->connectpath, fs);
477 if (ret < 0) {
478 DEBUG(0, ("%s: Failed to register volume (%s)\n",
479 volume, strerror(errno)));
480 goto done;
481 }
482
483 /*
484 * The shadow_copy2 module will fail to export subdirectories
485 * of a gluster volume unless we specify the mount point,
486 * because the detection fails if the file system is not
487 * locally mounted:
488 * https://bugzilla.samba.org/show_bug.cgi?id=13091
489 */
490 lp_do_parameter(SNUM(handle->conn), "shadow:mountpoint", "/");
491
492 /*
493 * Unless we have an async implementation of getxattrat turn this off.
494 */
495 lp_do_parameter(SNUM(handle->conn), "smbd async dosmode", "false");
496
497 done:
498 if (ret < 0) {
499 if (fs)
500 glfs_fini(fs);
501 } else {
502 DBG_ERR("%s: Initialized volume from servers %s\n",
503 volume, volfile_servers);
504 handle->data = fs;
505 }
506 talloc_free(tmp_ctx);
507 return ret;
508 }
509
510 static void vfs_gluster_disconnect(struct vfs_handle_struct *handle)
511 {
512 glfs_t *fs = NULL;
513
514 fs = handle->data;
515
516 glfs_clear_preopened(fs);
517 }
518
519 static uint64_t vfs_gluster_disk_free(struct vfs_handle_struct *handle,
520 const struct smb_filename *smb_fname,
521 uint64_t *bsize_p,
522 uint64_t *dfree_p,
523 uint64_t *dsize_p)
524 {
525 struct statvfs statvfs = { 0, };
526 int ret;
527
528 ret = glfs_statvfs(handle->data, smb_fname->base_name, &statvfs);
529 if (ret < 0) {
530 return -1;
531 }
532
533 if (bsize_p != NULL) {
534 *bsize_p = (uint64_t)statvfs.f_bsize; /* Block size */
535 }
536 if (dfree_p != NULL) {
537 *dfree_p = (uint64_t)statvfs.f_bavail; /* Available Block units */
538 }
539 if (dsize_p != NULL) {
540 *dsize_p = (uint64_t)statvfs.f_blocks; /* Total Block units */
541 }
542
543 return (uint64_t)statvfs.f_bavail;
544 }
545
546 static int vfs_gluster_get_quota(struct vfs_handle_struct *handle,
547 const struct smb_filename *smb_fname,
548 enum SMB_QUOTA_TYPE qtype,
549 unid_t id,
550 SMB_DISK_QUOTA *qt)
551 {
552 errno = ENOSYS;
553 return -1;
554 }
555
556 static int
557 vfs_gluster_set_quota(struct vfs_handle_struct *handle,
558 enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
559 {
560 errno = ENOSYS;
561 return -1;
562 }
563
564 static int vfs_gluster_statvfs(struct vfs_handle_struct *handle,
565 const struct smb_filename *smb_fname,
566 struct vfs_statvfs_struct *vfs_statvfs)
567 {
568 struct statvfs statvfs = { 0, };
569 int ret;
570
571 ret = glfs_statvfs(handle->data, smb_fname->base_name, &statvfs);
572 if (ret < 0) {
573 DEBUG(0, ("glfs_statvfs(%s) failed: %s\n",
574 smb_fname->base_name, strerror(errno)));
575 return -1;
576 }
577
578 ZERO_STRUCTP(vfs_statvfs);
579
580 vfs_statvfs->OptimalTransferSize = statvfs.f_frsize;
581 vfs_statvfs->BlockSize = statvfs.f_bsize;
582 vfs_statvfs->TotalBlocks = statvfs.f_blocks;
583 vfs_statvfs->BlocksAvail = statvfs.f_bfree;
584 vfs_statvfs->UserBlocksAvail = statvfs.f_bavail;
585 vfs_statvfs->TotalFileNodes = statvfs.f_files;
586 vfs_statvfs->FreeFileNodes = statvfs.f_ffree;
587 vfs_statvfs->FsIdentifier = statvfs.f_fsid;
588 vfs_statvfs->FsCapabilities =
589 FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
590
591 return ret;
592 }
593
594 static uint32_t vfs_gluster_fs_capabilities(struct vfs_handle_struct *handle,
595 enum timestamp_set_resolution *p_ts_res)
596 {
597 uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
598
599 #ifdef HAVE_GFAPI_VER_6
600 caps |= FILE_SUPPORTS_SPARSE_FILES;
601 #endif
602
603 #ifdef STAT_HAVE_NSEC
604 *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
605 #endif
606
607 return caps;
608 }
609
610 static glfs_fd_t *vfs_gluster_fetch_glfd(struct vfs_handle_struct *handle,
611 const files_struct *fsp)
612 {
613 glfs_fd_t **glfd = (glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
614 if (glfd == NULL) {
615 DBG_INFO("Failed to fetch fsp extension\n");
616 return NULL;
617 }
618 if (*glfd == NULL) {
619 DBG_INFO("Empty glfs_fd_t pointer\n");
620 return NULL;
621 }
622
623 return *glfd;
624 }
625
626 static DIR *vfs_gluster_fdopendir(struct vfs_handle_struct *handle,
627 files_struct *fsp, const char *mask,
628 uint32_t attributes)
629 {
630 glfs_fd_t *glfd = NULL;
631
632 glfd = glfs_opendir(handle->data, fsp->fsp_name->base_name);
633 if (glfd == NULL) {
634 return NULL;
635 }
636
637 return (DIR *)glfd;
638 }
639
640 static int vfs_gluster_closedir(struct vfs_handle_struct *handle, DIR *dirp)
641 {
642 int ret;
643
644 START_PROFILE(syscall_closedir);
645 ret = glfs_closedir((void *)dirp);
646 END_PROFILE(syscall_closedir);
647
648 return ret;
649 }
650
651 static struct dirent *vfs_gluster_readdir(struct vfs_handle_struct *handle,
652 struct files_struct *dirfsp,
653 DIR *dirp)
654 {
655 static char direntbuf[512];
656 int ret;
657 struct dirent *dirent = 0;
658
659 START_PROFILE(syscall_readdir);
660
661 ret = glfs_readdir_r((void *)dirp, (void *)direntbuf, &dirent);
662
663 if ((ret < 0) || (dirent == NULL)) {
664 END_PROFILE(syscall_readdir);
665 return NULL;
666 }
667
668 END_PROFILE(syscall_readdir);
669 return dirent;
670 }
671
672 static void vfs_gluster_rewinddir(struct vfs_handle_struct *handle, DIR *dirp)
673 {
674 START_PROFILE(syscall_rewinddir);
675 glfs_seekdir((void *)dirp, 0);
676 END_PROFILE(syscall_rewinddir);
677 }
678
679 static int vfs_gluster_mkdirat(struct vfs_handle_struct *handle,
680 struct files_struct *dirfsp,
681 const struct smb_filename *smb_fname,
682 mode_t mode)
683 {
684 int ret;
685
686 #ifdef HAVE_GFAPI_VER_7_11
687 glfs_fd_t *pglfd = NULL;
688
689 START_PROFILE(syscall_mkdirat);
690
691 pglfd = vfs_gluster_fetch_glfd(handle, dirfsp);
692 if (pglfd == NULL) {
693 END_PROFILE(syscall_mkdirat);
694 DBG_ERR("Failed to fetch gluster fd\n");
695 return -1;
696 }
697
698 ret = glfs_mkdirat(pglfd, smb_fname->base_name, mode);
699 #else
700 struct smb_filename *full_fname = NULL;
701
702 START_PROFILE(syscall_mkdirat);
703
704 full_fname = full_path_from_dirfsp_atname(talloc_tos(),
705 dirfsp,
706 smb_fname);
707 if (full_fname == NULL) {
708 END_PROFILE(syscall_mkdirat);
709 return -1;
710 }
711
712 ret = glfs_mkdir(handle->data, full_fname->base_name, mode);
713
714 TALLOC_FREE(full_fname);
715 #endif
716
717 END_PROFILE(syscall_mkdirat);
718
719 return ret;
720 }
721
722 static int vfs_gluster_openat(struct vfs_handle_struct *handle,
723 const struct files_struct *dirfsp,
724 const struct smb_filename *smb_fname,
725 files_struct *fsp,
726 const struct vfs_open_how *how)
727 {
728 int flags = how->flags;
729 struct smb_filename *full_fname = NULL;
730 bool have_opath = false;
731 bool became_root = false;
732 glfs_fd_t *glfd = NULL;
733 glfs_fd_t *pglfd = NULL;
734 glfs_fd_t **p_tmp;
735
736 START_PROFILE(syscall_openat);
737
738 if (how->resolve != 0) {
739 END_PROFILE(syscall_openat);
740 errno = ENOSYS;
741 return -1;
742 }
743
744 p_tmp = VFS_ADD_FSP_EXTENSION(handle, fsp, glfs_fd_t *, NULL);
745 if (p_tmp == NULL) {
746 END_PROFILE(syscall_openat);
747 errno = ENOMEM;
748 return -1;
749 }
750
751 #ifdef O_PATH
752 have_opath = true;
753 if (fsp->fsp_flags.is_pathref) {
754 flags |= O_PATH;
755 }
756 #endif
757
758 full_fname = full_path_from_dirfsp_atname(talloc_tos(),
759 dirfsp,
760 smb_fname);
761 if (full_fname == NULL) {
762 END_PROFILE(syscall_openat);
763 return -1;
764 }
765
766 if (fsp->fsp_flags.is_pathref && !have_opath) {
767 become_root();
768 became_root = true;
769 }
770
771 if (fsp_get_pathref_fd(dirfsp) != AT_FDCWD) {
772 #ifdef HAVE_GFAPI_VER_7_11
773 /*
774 * Fetch Gluster fd for parent directory using dirfsp
775 * before calling glfs_openat();
776 */
777 pglfd = vfs_gluster_fetch_glfd(handle, dirfsp);
778 if (pglfd == NULL) {
779 END_PROFILE(syscall_openat);
780 DBG_ERR("Failed to fetch gluster fd\n");
781 return -1;
782 }
783
784 glfd = glfs_openat(pglfd,
785 smb_fname->base_name,
786 flags,
787 how->mode);
788 #else
789 /*
790 * Replace smb_fname with full_path constructed above.
791 */
792 smb_fname = full_fname;
793 #endif
794 }
795
796 if (pglfd == NULL) {
797 /*
798 * smb_fname can either be a full_path or the same one
799 * as received from the caller. In the latter case we
800 * are operating at current working directory.
801 */
802 if (flags & O_CREAT) {
803 glfd = glfs_creat(handle->data,
804 smb_fname->base_name,
805 flags,
806 how->mode);
807 } else {
808 glfd = glfs_open(handle->data,
809 smb_fname->base_name,
810 flags);
811 }
812 }
813
814 if (became_root) {
815 unbecome_root();
816 }
817
818 TALLOC_FREE(full_fname);
819
820 fsp->fsp_flags.have_proc_fds = false;
821
822 if (glfd == NULL) {
823 END_PROFILE(syscall_openat);
824 /* no extension destroy_fn, so no need to save errno */
825 VFS_REMOVE_FSP_EXTENSION(handle, fsp);
826 return -1;
827 }
828
829 *p_tmp = glfd;
830
831 END_PROFILE(syscall_openat);
832 /* An arbitrary value for error reporting, so you know its us. */
833 return 13371337;
834 }
835
836 static int vfs_gluster_close(struct vfs_handle_struct *handle,
837 files_struct *fsp)
838 {
839 int ret;
840 glfs_fd_t *glfd = NULL;
841
842 START_PROFILE(syscall_close);
843
844 glfd = vfs_gluster_fetch_glfd(handle, fsp);
845 if (glfd == NULL) {
846 END_PROFILE(syscall_close);
847 DBG_ERR("Failed to fetch gluster fd\n");
848 return -1;
849 }
850
851 VFS_REMOVE_FSP_EXTENSION(handle, fsp);
852
853 ret = glfs_close(glfd);
854 END_PROFILE(syscall_close);
855
856 return ret;
857 }
858
859 static ssize_t vfs_gluster_pread(struct vfs_handle_struct *handle,
860 files_struct *fsp, void *data, size_t n,
861 off_t offset)
862 {
863 ssize_t ret;
864 glfs_fd_t *glfd = NULL;
865
866 START_PROFILE_BYTES(syscall_pread, n);
867
868 glfd = vfs_gluster_fetch_glfd(handle, fsp);
869 if (glfd == NULL) {
870 END_PROFILE_BYTES(syscall_pread);
871 DBG_ERR("Failed to fetch gluster fd\n");
872 return -1;
873 }
874
875 #ifdef HAVE_GFAPI_VER_7_6
876 ret = glfs_pread(glfd, data, n, offset, 0, NULL);
877 #else
878 ret = glfs_pread(glfd, data, n, offset, 0);
879 #endif
880 END_PROFILE_BYTES(syscall_pread);
881
882 return ret;
883 }
884
885 struct vfs_gluster_pread_state {
886 ssize_t ret;
887 glfs_fd_t *fd;
888 void *buf;
889 size_t count;
890 off_t offset;
891
892 struct vfs_aio_state vfs_aio_state;
893 SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
894 };
895
896 static void vfs_gluster_pread_do(void *private_data);
897 static void vfs_gluster_pread_done(struct tevent_req *subreq);
898 static int vfs_gluster_pread_state_destructor(struct vfs_gluster_pread_state *state);
899
900 static struct tevent_req *vfs_gluster_pread_send(struct vfs_handle_struct
901 *handle, TALLOC_CTX *mem_ctx,
902 struct tevent_context *ev,
903 files_struct *fsp,
904 void *data, size_t n,
905 off_t offset)
906 {
907 struct vfs_gluster_pread_state *state;
908 struct tevent_req *req, *subreq;
909
910 glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
911 if (glfd == NULL) {
912 DBG_ERR("Failed to fetch gluster fd\n");
913 return NULL;
914 }
915
916 req = tevent_req_create(mem_ctx, &state, struct vfs_gluster_pread_state);
917 if (req == NULL) {
918 return NULL;
919 }
920
921 state->ret = -1;
922 state->fd = glfd;
923 state->buf = data;
924 state->count = n;
925 state->offset = offset;
926
927 SMBPROFILE_BYTES_ASYNC_START(syscall_asys_pread, profile_p,
928 state->profile_bytes, n);
929 SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
930
931 subreq = pthreadpool_tevent_job_send(
932 state, ev, handle->conn->sconn->pool,
933 vfs_gluster_pread_do, state);
934 if (tevent_req_nomem(subreq, req)) {
935 return tevent_req_post(req, ev);
936 }
937 tevent_req_set_callback(subreq, vfs_gluster_pread_done, req);
938
939 talloc_set_destructor(state, vfs_gluster_pread_state_destructor);
940
941 return req;
942 }
943
944 static void vfs_gluster_pread_do(void *private_data)
945 {
946 struct vfs_gluster_pread_state *state = talloc_get_type_abort(
947 private_data, struct vfs_gluster_pread_state);
948 struct timespec start_time;
949 struct timespec end_time;
950
951 SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
952
953 PROFILE_TIMESTAMP(&start_time);
954
955 do {
956 #ifdef HAVE_GFAPI_VER_7_6
957 state->ret = glfs_pread(state->fd, state->buf, state->count,
958 state->offset, 0, NULL);
959 #else
960 state->ret = glfs_pread(state->fd, state->buf, state->count,
961 state->offset, 0);
962 #endif
963 } while ((state->ret == -1) && (errno == EINTR));
964
965 if (state->ret == -1) {
966 state->vfs_aio_state.error = errno;
967 }
968
969 PROFILE_TIMESTAMP(&end_time);
970
971 state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
972
973 SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
974 }
975
976 static int vfs_gluster_pread_state_destructor(struct vfs_gluster_pread_state *state)
977 {
978 return -1;
979 }
980
981 static void vfs_gluster_pread_done(struct tevent_req *subreq)
982 {
983 struct tevent_req *req = tevent_req_callback_data(
984 subreq, struct tevent_req);
985 struct vfs_gluster_pread_state *state = tevent_req_data(
986 req, struct vfs_gluster_pread_state);
987 int ret;
988
989 ret = pthreadpool_tevent_job_recv(subreq);
990 TALLOC_FREE(subreq);
991 SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
992 talloc_set_destructor(state, NULL);
993 if (ret != 0) {
994 if (ret != EAGAIN) {
995 tevent_req_error(req, ret);
996 return;
997 }
998 /*
999 * If we get EAGAIN from pthreadpool_tevent_job_recv() this
1000 * means the lower level pthreadpool failed to create a new
1001 * thread. Fallback to sync processing in that case to allow
1002 * some progress for the client.
1003 */
1004 vfs_gluster_pread_do(state);
1005 }
1006
1007 tevent_req_done(req);
1008 }
1009
1010 static ssize_t vfs_gluster_pread_recv(struct tevent_req *req,
1011 struct vfs_aio_state *vfs_aio_state)
1012 {
1013 struct vfs_gluster_pread_state *state = tevent_req_data(
1014 req, struct vfs_gluster_pread_state);
1015
1016 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1017 return -1;
1018 }
1019
1020 *vfs_aio_state = state->vfs_aio_state;
1021 return state->ret;
1022 }
1023
1024 struct vfs_gluster_pwrite_state {
1025 ssize_t ret;
1026 glfs_fd_t *fd;
1027 const void *buf;
1028 size_t count;
1029 off_t offset;
1030
1031 struct vfs_aio_state vfs_aio_state;
1032 SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
1033 };
1034
1035 static void vfs_gluster_pwrite_do(void *private_data);
1036 static void vfs_gluster_pwrite_done(struct tevent_req *subreq);
1037 static int vfs_gluster_pwrite_state_destructor(struct vfs_gluster_pwrite_state *state);
1038
1039 static struct tevent_req *vfs_gluster_pwrite_send(struct vfs_handle_struct
1040 *handle, TALLOC_CTX *mem_ctx,
1041 struct tevent_context *ev,
1042 files_struct *fsp,
1043 const void *data, size_t n,
1044 off_t offset)
1045 {
1046 struct tevent_req *req, *subreq;
1047 struct vfs_gluster_pwrite_state *state;
1048
1049 glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
1050 if (glfd == NULL) {
1051 DBG_ERR("Failed to fetch gluster fd\n");
1052 return NULL;
1053 }
1054
1055 req = tevent_req_create(mem_ctx, &state, struct vfs_gluster_pwrite_state);
1056 if (req == NULL) {
1057 return NULL;
1058 }
1059
1060 state->ret = -1;
1061 state->fd = glfd;
1062 state->buf = data;
1063 state->count = n;
1064 state->offset = offset;
1065
1066 SMBPROFILE_BYTES_ASYNC_START(syscall_asys_pwrite, profile_p,
1067 state->profile_bytes, n);
1068 SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
1069
1070 subreq = pthreadpool_tevent_job_send(
1071 state, ev, handle->conn->sconn->pool,
1072 vfs_gluster_pwrite_do, state);
1073 if (tevent_req_nomem(subreq, req)) {
1074 return tevent_req_post(req, ev);
1075 }
1076 tevent_req_set_callback(subreq, vfs_gluster_pwrite_done, req);
1077
1078 talloc_set_destructor(state, vfs_gluster_pwrite_state_destructor);
1079
1080 return req;
1081 }
1082
1083 static void vfs_gluster_pwrite_do(void *private_data)
1084 {
1085 struct vfs_gluster_pwrite_state *state = talloc_get_type_abort(
1086 private_data, struct vfs_gluster_pwrite_state);
1087 struct timespec start_time;
1088 struct timespec end_time;
1089
1090 SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
1091
1092 PROFILE_TIMESTAMP(&start_time);
1093
1094 do {
1095 #ifdef HAVE_GFAPI_VER_7_6
1096 state->ret = glfs_pwrite(state->fd, state->buf, state->count,
1097 state->offset, 0, NULL, NULL);
1098 #else
1099 state->ret = glfs_pwrite(state->fd, state->buf, state->count,
1100 state->offset, 0);
1101 #endif
1102 } while ((state->ret == -1) && (errno == EINTR));
1103
1104 if (state->ret == -1) {
1105 state->vfs_aio_state.error = errno;
1106 }
1107
1108 PROFILE_TIMESTAMP(&end_time);
1109
1110 state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
1111
1112 SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
1113 }
1114
1115 static int vfs_gluster_pwrite_state_destructor(struct vfs_gluster_pwrite_state *state)
1116 {
1117 return -1;
1118 }
1119
1120 static void vfs_gluster_pwrite_done(struct tevent_req *subreq)
1121 {
1122 struct tevent_req *req = tevent_req_callback_data(
1123 subreq, struct tevent_req);
1124 struct vfs_gluster_pwrite_state *state = tevent_req_data(
1125 req, struct vfs_gluster_pwrite_state);
1126 int ret;
1127
1128 ret = pthreadpool_tevent_job_recv(subreq);
1129 TALLOC_FREE(subreq);
1130 SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
1131 talloc_set_destructor(state, NULL);
1132 if (ret != 0) {
1133 if (ret != EAGAIN) {
1134 tevent_req_error(req, ret);
1135 return;
1136 }
1137 /*
1138 * If we get EAGAIN from pthreadpool_tevent_job_recv() this
1139 * means the lower level pthreadpool failed to create a new
1140 * thread. Fallback to sync processing in that case to allow
1141 * some progress for the client.
1142 */
1143 vfs_gluster_pwrite_do(state);
1144 }
1145
1146 tevent_req_done(req);
1147 }
1148
1149 static ssize_t vfs_gluster_pwrite_recv(struct tevent_req *req,
1150 struct vfs_aio_state *vfs_aio_state)
1151 {
1152 struct vfs_gluster_pwrite_state *state = tevent_req_data(
1153 req, struct vfs_gluster_pwrite_state);
1154
1155 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1156 return -1;
1157 }
1158
1159 *vfs_aio_state = state->vfs_aio_state;
1160
1161 return state->ret;
1162 }
1163
1164 static ssize_t vfs_gluster_pwrite(struct vfs_handle_struct *handle,
1165 files_struct *fsp, const void *data,
1166 size_t n, off_t offset)
1167 {
1168 ssize_t ret;
1169 glfs_fd_t *glfd = NULL;
1170
1171 START_PROFILE_BYTES(syscall_pwrite, n);
1172
1173 glfd = vfs_gluster_fetch_glfd(handle, fsp);
1174 if (glfd == NULL) {
1175 END_PROFILE_BYTES(syscall_pwrite);
1176 DBG_ERR("Failed to fetch gluster fd\n");
1177 return -1;
1178 }
1179
1180 #ifdef HAVE_GFAPI_VER_7_6
1181 ret = glfs_pwrite(glfd, data, n, offset, 0, NULL, NULL);
1182 #else
1183 ret = glfs_pwrite(glfd, data, n, offset, 0);
1184 #endif
1185 END_PROFILE_BYTES(syscall_pwrite);
1186
1187 return ret;
1188 }
1189
1190 static off_t vfs_gluster_lseek(struct vfs_handle_struct *handle,
1191 files_struct *fsp, off_t offset, int whence)
1192 {
1193 off_t ret = 0;
1194 glfs_fd_t *glfd = NULL;
1195
1196 START_PROFILE(syscall_lseek);
1197
1198 glfd = vfs_gluster_fetch_glfd(handle, fsp);
1199 if (glfd == NULL) {
1200 END_PROFILE(syscall_lseek);
1201 DBG_ERR("Failed to fetch gluster fd\n");
1202 return -1;
1203 }
1204
1205 ret = glfs_lseek(glfd, offset, whence);
1206 END_PROFILE(syscall_lseek);
1207
1208 return ret;
1209 }
1210
1211 static ssize_t vfs_gluster_sendfile(struct vfs_handle_struct *handle, int tofd,
1212 files_struct *fromfsp,
1213 const DATA_BLOB *hdr,
1214 off_t offset, size_t n)
1215 {
1216 errno = ENOTSUP;
1217 return -1;
1218 }
1219
1220 static ssize_t vfs_gluster_recvfile(struct vfs_handle_struct *handle,
1221 int fromfd, files_struct *tofsp,
1222 off_t offset, size_t n)
1223 {
1224 errno = ENOTSUP;
1225 return -1;
1226 }
1227
1228 static int vfs_gluster_renameat(struct vfs_handle_struct *handle,
1229 files_struct *srcfsp,
1230 const struct smb_filename *smb_fname_src,
1231 files_struct *dstfsp,
1232 const struct smb_filename *smb_fname_dst)
1233 {
1234 int ret;
1235
1236 #ifdef HAVE_GFAPI_VER_7_11
1237 glfs_fd_t *src_pglfd = NULL;
1238 glfs_fd_t *dst_pglfd = NULL;
1239
1240 START_PROFILE(syscall_renameat);
1241
1242 src_pglfd = vfs_gluster_fetch_glfd(handle, srcfsp);
1243 if (src_pglfd == NULL) {
1244 END_PROFILE(syscall_renameat);
1245 DBG_ERR("Failed to fetch gluster fd\n");
1246 return -1;
1247 }
1248
1249 dst_pglfd = vfs_gluster_fetch_glfd(handle, dstfsp);
1250 if (dst_pglfd == NULL) {
1251 END_PROFILE(syscall_renameat);
1252 DBG_ERR("Failed to fetch gluster fd\n");
1253 return -1;
1254 }
1255
1256 ret = glfs_renameat(src_pglfd, smb_fname_src->base_name,
1257 dst_pglfd, smb_fname_dst->base_name);
1258 #else
1259 struct smb_filename *full_fname_src = NULL;
1260 struct smb_filename *full_fname_dst = NULL;
1261
1262 START_PROFILE(syscall_renameat);
1263
1264 full_fname_src = full_path_from_dirfsp_atname(talloc_tos(),
1265 srcfsp,
1266 smb_fname_src);
1267 if (full_fname_src == NULL) {
1268 END_PROFILE(syscall_renameat);
1269 errno = ENOMEM;
1270 return -1;
1271 }
1272
1273 full_fname_dst = full_path_from_dirfsp_atname(talloc_tos(),
1274 dstfsp,
1275 smb_fname_dst);
1276 if (full_fname_dst == NULL) {
1277 END_PROFILE(syscall_renameat);
1278 TALLOC_FREE(full_fname_src);
1279 errno = ENOMEM;
1280 return -1;
1281 }
1282 ret = glfs_rename(handle->data,
1283 full_fname_src->base_name,
1284 full_fname_dst->base_name);
1285
1286 TALLOC_FREE(full_fname_src);
1287 TALLOC_FREE(full_fname_dst);
1288 #endif
1289
1290 END_PROFILE(syscall_renameat);
1291
1292 return ret;
1293 }
1294
1295 struct vfs_gluster_fsync_state {
1296 ssize_t ret;
1297 glfs_fd_t *fd;
1298
1299 struct vfs_aio_state vfs_aio_state;
1300 SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
1301 };
1302
1303 static void vfs_gluster_fsync_do(void *private_data);
1304 static void vfs_gluster_fsync_done(struct tevent_req *subreq);
1305 static int vfs_gluster_fsync_state_destructor(struct vfs_gluster_fsync_state *state);
1306
1307 static struct tevent_req *vfs_gluster_fsync_send(struct vfs_handle_struct
1308 *handle, TALLOC_CTX *mem_ctx,
1309 struct tevent_context *ev,
1310 files_struct *fsp)
1311 {
1312 struct tevent_req *req, *subreq;
1313 struct vfs_gluster_fsync_state *state;
1314
1315 glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
1316 if (glfd == NULL) {
1317 DBG_ERR("Failed to fetch gluster fd\n");
1318 return NULL;
1319 }
1320
1321 req = tevent_req_create(mem_ctx, &state, struct vfs_gluster_fsync_state);
1322 if (req == NULL) {
1323 return NULL;
1324 }
1325
1326 state->ret = -1;
1327 state->fd = glfd;
1328
1329 SMBPROFILE_BYTES_ASYNC_START(syscall_asys_fsync, profile_p,
1330 state->profile_bytes, 0);
1331 SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
1332
1333 subreq = pthreadpool_tevent_job_send(
1334 state, ev, handle->conn->sconn->pool, vfs_gluster_fsync_do, state);
1335 if (tevent_req_nomem(subreq, req)) {
1336 return tevent_req_post(req, ev);
1337 }
1338 tevent_req_set_callback(subreq, vfs_gluster_fsync_done, req);
1339
1340 talloc_set_destructor(state, vfs_gluster_fsync_state_destructor);
1341
1342 return req;
1343 }
1344
1345 static void vfs_gluster_fsync_do(void *private_data)
1346 {
1347 struct vfs_gluster_fsync_state *state = talloc_get_type_abort(
1348 private_data, struct vfs_gluster_fsync_state);
1349 struct timespec start_time;
1350 struct timespec end_time;
1351
1352 SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
1353
1354 PROFILE_TIMESTAMP(&start_time);
1355
1356 do {
1357 #ifdef HAVE_GFAPI_VER_7_6
1358 state->ret = glfs_fsync(state->fd, NULL, NULL);
1359 #else
1360 state->ret = glfs_fsync(state->fd);
1361 #endif
1362 } while ((state->ret == -1) && (errno == EINTR));
1363
1364 if (state->ret == -1) {
1365 state->vfs_aio_state.error = errno;
1366 }
1367
1368 PROFILE_TIMESTAMP(&end_time);
1369
1370 state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
1371
1372 SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
1373 }
1374
1375 static int vfs_gluster_fsync_state_destructor(struct vfs_gluster_fsync_state *state)
1376 {
1377 return -1;
1378 }
1379
1380 static void vfs_gluster_fsync_done(struct tevent_req *subreq)
1381 {
1382 struct tevent_req *req = tevent_req_callback_data(
1383 subreq, struct tevent_req);
1384 struct vfs_gluster_fsync_state *state = tevent_req_data(
1385 req, struct vfs_gluster_fsync_state);
1386 int ret;
1387
1388 ret = pthreadpool_tevent_job_recv(subreq);
1389 TALLOC_FREE(subreq);
1390 SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
1391 talloc_set_destructor(state, NULL);
1392 if (ret != 0) {
1393 if (ret != EAGAIN) {
1394 tevent_req_error(req, ret);
1395 return;
1396 }
1397 /*
1398 * If we get EAGAIN from pthreadpool_tevent_job_recv() this
1399 * means the lower level pthreadpool failed to create a new
1400 * thread. Fallback to sync processing in that case to allow
1401 * some progress for the client.
1402 */
1403 vfs_gluster_fsync_do(state);
1404 }
1405
1406 tevent_req_done(req);
1407 }
1408
1409 static int vfs_gluster_fsync_recv(struct tevent_req *req,
1410 struct vfs_aio_state *vfs_aio_state)
1411 {
1412 struct vfs_gluster_fsync_state *state = tevent_req_data(
1413 req, struct vfs_gluster_fsync_state);
1414
1415 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1416 return -1;
1417 }
1418
1419 *vfs_aio_state = state->vfs_aio_state;
1420 return state->ret;
1421 }
1422
1423 static int vfs_gluster_stat(struct vfs_handle_struct *handle,
1424 struct smb_filename *smb_fname)
1425 {
1426 struct stat st;
1427 int ret;
1428
1429 START_PROFILE(syscall_stat);
1430 ret = glfs_stat(handle->data, smb_fname->base_name, &st);
1431 if (ret == 0) {
1432 smb_stat_ex_from_stat(&smb_fname->st, &st);
1433 }
1434 if (ret < 0 && errno != ENOENT) {
1435 DEBUG(0, ("glfs_stat(%s) failed: %s\n",
1436 smb_fname->base_name, strerror(errno)));
1437 }
1438 END_PROFILE(syscall_stat);
1439
1440 return ret;
1441 }
1442
1443 static int vfs_gluster_fstat(struct vfs_handle_struct *handle,
1444 files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1445 {
1446 struct stat st;
1447 int ret;
1448 glfs_fd_t *glfd = NULL;
1449
1450 START_PROFILE(syscall_fstat);
1451
1452 glfd = vfs_gluster_fetch_glfd(handle, fsp);
1453 if (glfd == NULL) {
1454 END_PROFILE(syscall_fstat);
1455 DBG_ERR("Failed to fetch gluster fd\n");
1456 return -1;
1457 }
1458
1459 ret = glfs_fstat(glfd, &st);
1460 if (ret == 0) {
1461 smb_stat_ex_from_stat(sbuf, &st);
1462 }
1463 if (ret < 0) {
1464 DEBUG(0, ("glfs_fstat(%d) failed: %s\n",
1465 fsp_get_io_fd(fsp), strerror(errno)));
1466 }
1467 END_PROFILE(syscall_fstat);
1468
1469 return ret;
1470 }
1471
1472 static int vfs_gluster_fstatat(struct vfs_handle_struct *handle,
1473 const struct files_struct *dirfsp,
1474 const struct smb_filename *smb_fname,
1475 SMB_STRUCT_STAT *sbuf,
1476 int flags)
1477 {
1478 struct stat st;
1479 int ret;
1480
1481 #ifdef HAVE_GFAPI_VER_7_11
1482 glfs_fd_t *pglfd = NULL;
1483
1484 START_PROFILE(syscall_fstatat);
1485
1486 pglfd = vfs_gluster_fetch_glfd(handle, dirfsp);
1487 if (pglfd == NULL) {
1488 END_PROFILE(syscall_fstatat);
1489 DBG_ERR("Failed to fetch gluster fd\n");
1490 return -1;
1491 }
1492
1493 ret = glfs_fstatat(pglfd, smb_fname->base_name, &st, flags);
1494 #else
1495 struct smb_filename *full_fname = NULL;
1496
1497 START_PROFILE(syscall_fstatat);
1498
1499 full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1500 dirfsp,
1501 smb_fname);
1502 if (full_fname == NULL) {
1503 END_PROFILE(syscall_fstatat);
1504 return -1;
1505 }
1506
1507 ret = glfs_stat(handle->data, full_fname->base_name, &st);
1508
1509 TALLOC_FREE(full_fname->base_name);
1510 #endif
1511
1512 if (ret == 0) {
1513 smb_stat_ex_from_stat(sbuf, &st);
1514 }
1515
1516 END_PROFILE(syscall_fstatat);
1517
1518 return ret;
1519 }
1520
1521 static int vfs_gluster_lstat(struct vfs_handle_struct *handle,
1522 struct smb_filename *smb_fname)
1523 {
1524 struct stat st;
1525 int ret;
1526
1527 START_PROFILE(syscall_lstat);
1528 ret = glfs_lstat(handle->data, smb_fname->base_name, &st);
1529 if (ret == 0) {
1530 smb_stat_ex_from_stat(&smb_fname->st, &st);
1531 }
1532 if (ret < 0 && errno != ENOENT) {
1533 DEBUG(0, ("glfs_lstat(%s) failed: %s\n",
1534 smb_fname->base_name, strerror(errno)));
1535 }
1536 END_PROFILE(syscall_lstat);
1537
1538 return ret;
1539 }
1540
1541 static uint64_t vfs_gluster_get_alloc_size(struct vfs_handle_struct *handle,
1542 files_struct *fsp,
1543 const SMB_STRUCT_STAT *sbuf)
1544 {
1545 uint64_t ret;
1546
1547 START_PROFILE(syscall_get_alloc_size);
1548 ret = sbuf->st_ex_blocks * 512;
1549 END_PROFILE(syscall_get_alloc_size);
1550
1551 return ret;
1552 }
1553
1554 static int vfs_gluster_unlinkat(struct vfs_handle_struct *handle,
1555 struct files_struct *dirfsp,
1556 const struct smb_filename *smb_fname,
1557 int flags)
1558 {
1559 int ret;
1560
1561 #ifdef HAVE_GFAPI_VER_7_11
1562 glfs_fd_t *pglfd = NULL;
1563
1564 START_PROFILE(syscall_unlinkat);
1565
1566 pglfd = vfs_gluster_fetch_glfd(handle, dirfsp);
1567 if (pglfd == NULL) {
1568 END_PROFILE(syscall_unlinkat);
1569 DBG_ERR("Failed to fetch gluster fd\n");
1570 return -1;
1571 }
1572
1573 ret = glfs_unlinkat(pglfd, smb_fname->base_name, flags);
1574 #else
1575 struct smb_filename *full_fname = NULL;
1576
1577 START_PROFILE(syscall_unlinkat);
1578
1579 full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1580 dirfsp,
1581 smb_fname);
1582 if (full_fname == NULL) {
1583 END_PROFILE(syscall_unlinkat);
1584 return -1;
1585 }
1586
1587 if (flags & AT_REMOVEDIR) {
1588 ret = glfs_rmdir(handle->data, full_fname->base_name);
1589 } else {
1590 ret = glfs_unlink(handle->data, full_fname->base_name);
1591 }
1592
1593 TALLOC_FREE(full_fname);
1594 #endif
1595
1596 END_PROFILE(syscall_unlinkat);
1597
1598 return ret;
1599 }
1600
1601 static int vfs_gluster_fchmod(struct vfs_handle_struct *handle,
1602 files_struct *fsp, mode_t mode)
1603 {
1604 int ret;
1605 glfs_fd_t *glfd = NULL;
1606
1607 START_PROFILE(syscall_fchmod);
1608
1609 glfd = vfs_gluster_fetch_glfd(handle, fsp);
1610 if (glfd == NULL) {
1611 END_PROFILE(syscall_fchmod);
1612 DBG_ERR("Failed to fetch gluster fd\n");
1613 return -1;
1614 }
1615
1616 if (!fsp->fsp_flags.is_pathref) {
1617 /*
1618 * We can use an io_fd to remove xattrs.
1619 */
1620 ret = glfs_fchmod(glfd, mode);
1621 } else {
1622 /*
1623 * This is no longer a handle based call.
1624 */
1625 ret = glfs_chmod(handle->data, fsp->fsp_name->base_name, mode);
1626 }
1627 END_PROFILE(syscall_fchmod);
1628
1629 return ret;
1630 }
1631
1632 static int vfs_gluster_fchown(struct vfs_handle_struct *handle,
1633 files_struct *fsp, uid_t uid, gid_t gid)
1634 {
1635 int ret;
1636 glfs_fd_t *glfd = NULL;
1637
1638 START_PROFILE(syscall_fchown);
1639
1640 glfd = vfs_gluster_fetch_glfd(handle, fsp);
1641 if (glfd == NULL) {
1642 END_PROFILE(syscall_fchown);
1643 DBG_ERR("Failed to fetch gluster fd\n");
1644 return -1;
1645 }
1646
1647 ret = glfs_fchown(glfd, uid, gid);
1648 END_PROFILE(syscall_fchown);
1649
1650 return ret;
1651 }
1652
1653 static int vfs_gluster_lchown(struct vfs_handle_struct *handle,
1654 const struct smb_filename *smb_fname,
1655 uid_t uid,
1656 gid_t gid)
1657 {
1658 int ret;
1659
1660 START_PROFILE(syscall_lchown);
1661 ret = glfs_lchown(handle->data, smb_fname->base_name, uid, gid);
1662 END_PROFILE(syscall_lchown);
1663
1664 return ret;
1665 }
1666
1667 static int vfs_gluster_chdir(struct vfs_handle_struct *handle,
1668 const struct smb_filename *smb_fname)
1669 {
1670 int ret;
1671
1672 START_PROFILE(syscall_chdir);
1673 ret = glfs_chdir(handle->data, smb_fname->base_name);
1674 END_PROFILE(syscall_chdir);
1675
1676 return ret;
1677 }
1678
1679 static struct smb_filename *vfs_gluster_getwd(struct vfs_handle_struct *handle,
1680 TALLOC_CTX *ctx)
1681 {
1682 char cwd[PATH_MAX] = { '\0' };
1683 char *ret;
1684 struct smb_filename *smb_fname = NULL;
1685
1686 START_PROFILE(syscall_getwd);
1687
1688 ret = glfs_getcwd(handle->data, cwd, PATH_MAX - 1);
1689 END_PROFILE(syscall_getwd);
1690
1691 if (ret == NULL) {
1692 return NULL;
1693 }
1694 smb_fname = synthetic_smb_fname(ctx,
1695 ret,
1696 NULL,
1697 NULL,
1698 0,
1699 0);
1700 return smb_fname;
1701 }
1702
1703 static int vfs_gluster_fntimes(struct vfs_handle_struct *handle,
1704 files_struct *fsp,
1705 struct smb_file_time *ft)
1706 {
1707 int ret = -1;
1708 struct timespec times[2];
1709 glfs_fd_t *glfd = NULL;
1710
1711 START_PROFILE(syscall_fntimes);
1712
1713 if (is_omit_timespec(&ft->atime)) {
1714 times[0].tv_sec = fsp->fsp_name->st.st_ex_atime.tv_sec;
1715 times[0].tv_nsec = fsp->fsp_name->st.st_ex_atime.tv_nsec;
1716 } else {
1717 times[0].tv_sec = ft->atime.tv_sec;
1718 times[0].tv_nsec = ft->atime.tv_nsec;
1719 }
1720
1721 if (is_omit_timespec(&ft->mtime)) {
1722 times[1].tv_sec = fsp->fsp_name->st.st_ex_mtime.tv_sec;
1723 times[1].tv_nsec = fsp->fsp_name->st.st_ex_mtime.tv_nsec;
1724 } else {
1725 times[1].tv_sec = ft->mtime.tv_sec;
1726 times[1].tv_nsec = ft->mtime.tv_nsec;
1727 }
1728
1729 if ((timespec_compare(&times[0],
1730 &fsp->fsp_name->st.st_ex_atime) == 0) &&
1731 (timespec_compare(&times[1],
1732 &fsp->fsp_name->st.st_ex_mtime) == 0)) {
1733 END_PROFILE(syscall_fntimes);
1734 return 0;
1735 }
1736
1737 glfd = vfs_gluster_fetch_glfd(handle, fsp);
1738 if (glfd == NULL) {
1739 END_PROFILE(syscall_fntimes);
1740 DBG_ERR("Failed to fetch gluster fd\n");
1741 return -1;
1742 }
1743
1744 if (!fsp->fsp_flags.is_pathref) {
1745 ret = glfs_futimens(glfd, times);
1746 } else {
1747 ret = glfs_utimens(handle->data,
1748 fsp->fsp_name->base_name,
1749 times);
1750 }
1751 END_PROFILE(syscall_fntimes);
1752
1753 return ret;
1754 }
1755
1756 static int vfs_gluster_ftruncate(struct vfs_handle_struct *handle,
1757 files_struct *fsp, off_t offset)
1758 {
1759 int ret;
1760 glfs_fd_t *glfd = NULL;
1761
1762 START_PROFILE(syscall_ftruncate);
1763
1764 glfd = vfs_gluster_fetch_glfd(handle, fsp);
1765 if (glfd == NULL) {
1766 END_PROFILE(syscall_ftruncate);
1767 DBG_ERR("Failed to fetch gluster fd\n");
1768 return -1;
1769 }
1770
1771 #ifdef HAVE_GFAPI_VER_7_6
1772 ret = glfs_ftruncate(glfd, offset, NULL, NULL);
1773 #else
1774 ret = glfs_ftruncate(glfd, offset);
1775 #endif
1776 END_PROFILE(syscall_ftruncate);
1777
1778 return ret;
1779 }
1780
1781 static int vfs_gluster_fallocate(struct vfs_handle_struct *handle,
1782 struct files_struct *fsp,
1783 uint32_t mode,
1784 off_t offset, off_t len)
1785 {
1786 int ret;
1787 #ifdef HAVE_GFAPI_VER_6
1788 glfs_fd_t *glfd = NULL;
1789 int keep_size, punch_hole;
1790
1791 START_PROFILE(syscall_fallocate);
1792
1793 glfd = vfs_gluster_fetch_glfd(handle, fsp);
1794 if (glfd == NULL) {
1795 END_PROFILE(syscall_fallocate);
1796 DBG_ERR("Failed to fetch gluster fd\n");
1797 return -1;
1798 }
1799
1800 keep_size = mode & VFS_FALLOCATE_FL_KEEP_SIZE;
1801 punch_hole = mode & VFS_FALLOCATE_FL_PUNCH_HOLE;
1802
1803 mode &= ~(VFS_FALLOCATE_FL_KEEP_SIZE|VFS_FALLOCATE_FL_PUNCH_HOLE);
1804 if (mode != 0) {
1805 END_PROFILE(syscall_fallocate);
1806 errno = ENOTSUP;
1807 return -1;
1808 }
1809
1810 if (punch_hole) {
1811 ret = glfs_discard(glfd, offset, len);
1812 if (ret != 0) {
1813 DBG_DEBUG("glfs_discard failed: %s\n",
1814 strerror(errno));
1815 }
1816 }
1817
1818 ret = glfs_fallocate(glfd, keep_size, offset, len);
1819 END_PROFILE(syscall_fallocate);
1820 #else
1821 errno = ENOTSUP;
1822 ret = -1;
1823 #endif
1824 return ret;
1825 }
1826
1827 static struct smb_filename *vfs_gluster_realpath(struct vfs_handle_struct *handle,
1828 TALLOC_CTX *ctx,
1829 const struct smb_filename *smb_fname)
1830 {
1831 char *result = NULL;
1832 struct smb_filename *result_fname = NULL;
1833 char *resolved_path = NULL;
1834
1835 START_PROFILE(syscall_realpath);
1836
1837 resolved_path = SMB_MALLOC_ARRAY(char, PATH_MAX+1);
1838 if (resolved_path == NULL) {
1839 END_PROFILE(syscall_realpath);
1840 errno = ENOMEM;
1841 return NULL;
1842 }
1843
1844 result = glfs_realpath(handle->data,
1845 smb_fname->base_name,
1846 resolved_path);
1847 if (result != NULL) {
1848 result_fname = synthetic_smb_fname(ctx,
1849 result,
1850 NULL,
1851 NULL,
1852 0,
1853 0);
1854 }
1855
1856 SAFE_FREE(resolved_path);
1857 END_PROFILE(syscall_realpath);
1858
1859 return result_fname;
1860 }
1861
1862 static bool vfs_gluster_lock(struct vfs_handle_struct *handle,
1863 files_struct *fsp, int op, off_t offset,
1864 off_t count, int type)
1865 {
1866 struct flock flock = { 0, };
1867 int ret;
1868 glfs_fd_t *glfd = NULL;
1869 bool ok = false;
1870
1871 START_PROFILE(syscall_fcntl_lock);
1872
1873 glfd = vfs_gluster_fetch_glfd(handle, fsp);
1874 if (glfd == NULL) {
1875 DBG_ERR("Failed to fetch gluster fd\n");
1876 ok = false;
1877 goto out;
1878 }
1879
1880 flock.l_type = type;
1881 flock.l_whence = SEEK_SET;
1882 flock.l_start = offset;
1883 flock.l_len = count;
1884 flock.l_pid = 0;
1885
1886 ret = glfs_posix_lock(glfd, op, &flock);
1887
1888 if (op == F_GETLK) {
1889 /* lock query, true if someone else has locked */
1890 if ((ret != -1) &&
1891 (flock.l_type != F_UNLCK) &&
1892 (flock.l_pid != 0) && (flock.l_pid != getpid())) {
1893 ok = true;
1894 goto out;
1895 }
1896 /* not me */
1897 ok = false;
1898 goto out;
1899 }
1900
1901 if (ret == -1) {
1902 ok = false;
1903 goto out;
1904 }
1905
1906 ok = true;
1907 out:
1908 END_PROFILE(syscall_fcntl_lock);
1909
1910 return ok;
1911 }
1912
1913 static int vfs_gluster_filesystem_sharemode(struct vfs_handle_struct *handle,
1914 files_struct *fsp,
1915 uint32_t share_access,
1916 uint32_t access_mask)
1917 {
1918 errno = ENOSYS;
1919 return -1;
1920 }
1921
1922 static int vfs_gluster_fcntl(vfs_handle_struct *handle,
1923 files_struct *fsp, int cmd, va_list cmd_arg)
1924 {
1925 /*
1926 * SMB_VFS_FCNTL() is currently only called by vfs_set_blocking() to
1927 * clear O_NONBLOCK, etc for LOCK_MAND and FIFOs. Ignore it.
1928 */
1929 if (cmd == F_GETFL) {
1930 return 0;
1931 } else if (cmd == F_SETFL) {
1932 va_list dup_cmd_arg;
1933 int opt;
1934
1935 va_copy(dup_cmd_arg, cmd_arg);
1936 opt = va_arg(dup_cmd_arg, int);
1937 va_end(dup_cmd_arg);
1938 if (opt == 0) {
1939 return 0;
1940 }
1941 DBG_ERR("unexpected fcntl SETFL(%d)\n", opt);
1942 goto err_out;
1943 }
1944 DBG_ERR("unexpected fcntl: %d\n", cmd);
1945 err_out:
1946 errno = EINVAL;
1947 return -1;
1948 }
1949
1950 static int vfs_gluster_linux_setlease(struct vfs_handle_struct *handle,
1951 files_struct *fsp, int leasetype)
1952 {
1953 errno = ENOSYS;
1954 return -1;
1955 }
1956
1957 static bool vfs_gluster_getlock(struct vfs_handle_struct *handle,
1958 files_struct *fsp, off_t *poffset,
1959 off_t *pcount, int *ptype, pid_t *ppid)
1960 {
1961 struct flock flock = { 0, };
1962 int ret;
1963 glfs_fd_t *glfd = NULL;
1964
1965 START_PROFILE(syscall_fcntl_getlock);
1966
1967 glfd = vfs_gluster_fetch_glfd(handle, fsp);
1968 if (glfd == NULL) {
1969 END_PROFILE(syscall_fcntl_getlock);
1970 DBG_ERR("Failed to fetch gluster fd\n");
1971 return false;
1972 }
1973
1974 flock.l_type = *ptype;
1975 flock.l_whence = SEEK_SET;
1976 flock.l_start = *poffset;
1977 flock.l_len = *pcount;
1978 flock.l_pid = 0;
1979
1980 ret = glfs_posix_lock(glfd, F_GETLK, &flock);
1981
1982 if (ret == -1) {
1983 END_PROFILE(syscall_fcntl_getlock);
1984 return false;
1985 }
1986
1987 *ptype = flock.l_type;
1988 *poffset = flock.l_start;
1989 *pcount = flock.l_len;
1990 *ppid = flock.l_pid;
1991 END_PROFILE(syscall_fcntl_getlock);
1992
1993 return true;
1994 }
1995
1996 static int vfs_gluster_symlinkat(struct vfs_handle_struct *handle,
1997 const struct smb_filename *link_target,
1998 struct files_struct *dirfsp,
1999 const struct smb_filename *new_smb_fname)
2000 {
2001 int ret;
2002
2003 #ifdef HAVE_GFAPI_VER_7_11
2004 glfs_fd_t *pglfd = NULL;
2005
2006 START_PROFILE(syscall_symlinkat);
2007
2008 pglfd = vfs_gluster_fetch_glfd(handle, dirfsp);
2009 if (pglfd == NULL) {
2010 END_PROFILE(syscall_symlinkat);
2011 DBG_ERR("Failed to fetch gluster fd\n");
2012 return -1;
2013 }
2014
2015 ret = glfs_symlinkat(link_target->base_name,
2016 pglfd,
2017 new_smb_fname->base_name);
2018 #else
2019 struct smb_filename *full_fname = NULL;
2020
2021 START_PROFILE(syscall_symlinkat);
2022
2023 full_fname = full_path_from_dirfsp_atname(talloc_tos(),
2024 dirfsp,
2025 new_smb_fname);
2026 if (full_fname == NULL) {
2027 END_PROFILE(syscall_symlinkat);
2028 return -1;
2029 }
2030
2031 ret = glfs_symlink(handle->data,
2032 link_target->base_name,
2033 full_fname->base_name);
2034
2035 TALLOC_FREE(full_fname);
2036 #endif
2037
2038 END_PROFILE(syscall_symlinkat);
2039
2040 return ret;
2041 }
2042
2043 static int vfs_gluster_readlinkat(struct vfs_handle_struct *handle,
2044 const struct files_struct *dirfsp,
2045 const struct smb_filename *smb_fname,
2046 char *buf,
2047 size_t bufsiz)
2048 {
2049 int ret;
2050
2051 #ifdef HAVE_GFAPI_VER_7_11
2052 glfs_fd_t *pglfd = NULL;
2053
2054 START_PROFILE(syscall_readlinkat);
2055
2056 pglfd = vfs_gluster_fetch_glfd(handle, dirfsp);
2057 if (pglfd == NULL) {
2058 END_PROFILE(syscall_readlinkat);
2059 DBG_ERR("Failed to fetch gluster fd\n");
2060 return -1;
2061 }
2062
2063 ret = glfs_readlinkat(pglfd, smb_fname->base_name, buf, bufsiz);
2064 #else
2065 struct smb_filename *full_fname = NULL;
2066
2067 START_PROFILE(syscall_readlinkat);
2068
2069 full_fname = full_path_from_dirfsp_atname(talloc_tos(),
2070 dirfsp,
2071 smb_fname);
2072 if (full_fname == NULL) {
2073 END_PROFILE(syscall_readlinkat);
2074 return -1;
2075 }
2076
2077 ret = glfs_readlink(handle->data, full_fname->base_name, buf, bufsiz);
2078
2079 TALLOC_FREE(full_fname);
2080 #endif
2081
2082 END_PROFILE(syscall_readlinkat);
2083
2084 return ret;
2085 }
2086
2087 static int vfs_gluster_linkat(struct vfs_handle_struct *handle,
2088 files_struct *srcfsp,
2089 const struct smb_filename *old_smb_fname,
2090 files_struct *dstfsp,
2091 const struct smb_filename *new_smb_fname,
2092 int flags)
2093 {
2094 int ret;
2095
2096 #ifdef HAVE_GFAPI_VER_7_11
2097 glfs_fd_t *src_pglfd = NULL;
2098 glfs_fd_t *dst_pglfd = NULL;
2099
2100 START_PROFILE(syscall_linkat);
2101
2102 src_pglfd = vfs_gluster_fetch_glfd(handle, srcfsp);
2103 if (src_pglfd == NULL) {
2104 END_PROFILE(syscall_linkat);
2105 DBG_ERR("Failed to fetch gluster fd\n");
2106 return -1;
2107 }
2108
2109 dst_pglfd = vfs_gluster_fetch_glfd(handle, dstfsp);
2110 if (dst_pglfd == NULL) {
2111 END_PROFILE(syscall_linkat);
2112 DBG_ERR("Failed to fetch gluster fd\n");
2113 return -1;
2114 }
2115
2116 ret = glfs_linkat(src_pglfd,
2117 old_smb_fname->base_name,
2118 dst_pglfd,
2119 new_smb_fname->base_name,
2120 flags);
2121 #else
2122 struct smb_filename *full_fname_old = NULL;
2123 struct smb_filename *full_fname_new = NULL;
2124
2125 START_PROFILE(syscall_linkat);
2126
2127 full_fname_old = full_path_from_dirfsp_atname(talloc_tos(),
2128 srcfsp,
2129 old_smb_fname);
2130 if (full_fname_old == NULL) {
2131 END_PROFILE(syscall_linkat);
2132 return -1;
2133 }
2134
2135 full_fname_new = full_path_from_dirfsp_atname(talloc_tos(),
2136 dstfsp,
2137 new_smb_fname);
2138 if (full_fname_new == NULL) {
2139 END_PROFILE(syscall_linkat);
2140 TALLOC_FREE(full_fname_old);
2141 return -1;
2142 }
2143
2144 ret = glfs_link(handle->data,
2145 full_fname_old->base_name,
2146 full_fname_new->base_name);
2147
2148 TALLOC_FREE(full_fname_old);
2149 TALLOC_FREE(full_fname_new);
2150 #endif
2151
2152 END_PROFILE(syscall_linkat);
2153
2154 return ret;
2155 }
2156
2157 static int vfs_gluster_mknodat(struct vfs_handle_struct *handle,
2158 files_struct *dirfsp,
2159 const struct smb_filename *smb_fname,
2160 mode_t mode,
2161 SMB_DEV_T dev)
2162 {
2163 int ret;
2164
2165 #ifdef HAVE_GFAPI_VER_7_11
2166 glfs_fd_t *pglfd = NULL;
2167
2168 START_PROFILE(syscall_mknodat);
2169
2170 pglfd = vfs_gluster_fetch_glfd(handle, dirfsp);
2171 if (pglfd == NULL) {
2172 END_PROFILE(syscall_mknodat);
2173 DBG_ERR("Failed to fetch gluster fd\n");
2174 return -1;
2175 }
2176
2177 ret = glfs_mknodat(pglfd, smb_fname->base_name, mode, dev);
2178 #else
2179 struct smb_filename *full_fname = NULL;
2180
2181 START_PROFILE(syscall_mknodat);
2182
2183 full_fname = full_path_from_dirfsp_atname(talloc_tos(),
2184 dirfsp,
2185 smb_fname);
2186 if (full_fname == NULL) {
2187 END_PROFILE(syscall_mknodat);
2188 return -1;
2189 }
2190
2191 ret = glfs_mknod(handle->data, full_fname->base_name, mode, dev);
2192
2193 TALLOC_FREE(full_fname);
2194 #endif
2195
2196 END_PROFILE(syscall_mknodat);
2197
2198 return ret;
2199 }
2200
2201 static int vfs_gluster_fchflags(struct vfs_handle_struct *handle,
2202 struct files_struct *fsp,
2203 unsigned int flags)
2204 {
2205 errno = ENOSYS;
2206 return -1;
2207 }
2208
2209 static NTSTATUS vfs_gluster_get_real_filename_at(
2210 struct vfs_handle_struct *handle,
2211 struct files_struct *dirfsp,
2212 const char *name,
2213 TALLOC_CTX *mem_ctx,
2214 char **found_name)
2215 {
2216 int ret;
2217 char key_buf[GLUSTER_NAME_MAX + 64];
2218 char val_buf[GLUSTER_NAME_MAX + 1];
2219
2220 if (strlen(name) >= GLUSTER_NAME_MAX) {
2221 return NT_STATUS_OBJECT_NAME_INVALID;
2222 }
2223
2224 snprintf(key_buf, GLUSTER_NAME_MAX + 64,
2225 "glusterfs.get_real_filename:%s", name);
2226
2227 ret = glfs_getxattr(handle->data,
2228 dirfsp->fsp_name->base_name,
2229 key_buf,
2230 val_buf,
2231 GLUSTER_NAME_MAX + 1);
2232 if (ret == -1) {
2233 if (errno == ENOATTR) {
2234 errno = ENOENT;
2235 }
2236 return map_nt_error_from_unix(errno);
2237 }
2238
2239 *found_name = talloc_strdup(mem_ctx, val_buf);
2240 if (found_name[0] == NULL) {
2241 return NT_STATUS_NO_MEMORY;
2242 }
2243
2244 return NT_STATUS_OK;
2245 }
2246
2247 static const char *vfs_gluster_connectpath(
2248 struct vfs_handle_struct *handle,
2249 const struct files_struct *dirfsp,
2250 const struct smb_filename *smb_fname)
2251 {
2252 return handle->conn->connectpath;
2253 }
2254
2255 /* EA Operations */
2256
2257 static ssize_t vfs_gluster_fgetxattr(struct vfs_handle_struct *handle,
2258 files_struct *fsp, const char *name,
2259 void *value, size_t size)
2260 {
2261 glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
2262 if (glfd == NULL) {
2263 DBG_ERR("Failed to fetch gluster fd\n");
2264 return -1;
2265 }
2266
2267 if (!fsp->fsp_flags.is_pathref) {
2268 /*
2269 * We can use an io_fd to retrieve xattr value.
2270 */
2271 return glfs_fgetxattr(glfd, name, value, size);
2272 }
2273
2274 /*
2275 * This is no longer a handle based call.
2276 */
2277 return glfs_getxattr(handle->data,
2278 fsp->fsp_name->base_name,
2279 name,
2280 value,
2281 size);
2282 }
2283
2284 static ssize_t vfs_gluster_flistxattr(struct vfs_handle_struct *handle,
2285 files_struct *fsp, char *list,
2286 size_t size)
2287 {
2288 glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
2289 if (glfd == NULL) {
2290 DBG_ERR("Failed to fetch gluster fd\n");
2291 return -1;
2292 }
2293 if (!fsp->fsp_flags.is_pathref) {
2294 /*
2295 * We can use an io_fd to list xattrs.
2296 */
2297 return glfs_flistxattr(glfd, list, size);
2298 } else {
2299 /*
2300 * This is no longer a handle based call.
2301 */
2302 return glfs_listxattr(handle->data,
2303 fsp->fsp_name->base_name,
2304 list,
2305 size);
2306 }
2307 }
2308
2309 static int vfs_gluster_fremovexattr(struct vfs_handle_struct *handle,
2310 files_struct *fsp, const char *name)
2311 {
2312 glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
2313 if (glfd == NULL) {
2314 DBG_ERR("Failed to fetch gluster fd\n");
2315 return -1;
2316 }
2317 if (!fsp->fsp_flags.is_pathref) {
2318 /*
2319 * We can use an io_fd to remove xattrs.
2320 */
2321 return glfs_fremovexattr(glfd, name);
2322 } else {
2323 /*
2324 * This is no longer a handle based call.
2325 */
2326 return glfs_removexattr(handle->data,
2327 fsp->fsp_name->base_name,
2328 name);
2329 }
2330 }
2331
2332 static int vfs_gluster_fsetxattr(struct vfs_handle_struct *handle,
2333 files_struct *fsp, const char *name,
2334 const void *value, size_t size, int flags)
2335 {
2336 glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
2337 if (glfd == NULL) {
2338 DBG_ERR("Failed to fetch gluster fd\n");
2339 return -1;
2340 }
2341
2342 if (!fsp->fsp_flags.is_pathref) {
2343 /*
2344 * We can use an io_fd to set xattrs.
2345 */
2346 return glfs_fsetxattr(glfd, name, value, size, flags);
2347 } else {
2348 /*
2349 * This is no longer a handle based call.
2350 */
2351 return glfs_setxattr(handle->data,
2352 fsp->fsp_name->base_name,
2353 name,
2354 value,
2355 size,
2356 flags);
2357 }
2358 }
2359
2360 /* AIO Operations */
2361
2362 static bool vfs_gluster_aio_force(struct vfs_handle_struct *handle,
2363 files_struct *fsp)
2364 {
2365 return false;
2366 }
2367
2368 static NTSTATUS vfs_gluster_create_dfs_pathat(struct vfs_handle_struct *handle,
2369 struct files_struct *dirfsp,
2370 const struct smb_filename *smb_fname,
2371 const struct referral *reflist,
2372 size_t referral_count)
2373 {
2374 TALLOC_CTX *frame = talloc_stackframe();
2375 NTSTATUS status = NT_STATUS_NO_MEMORY;
2376 int ret;
2377 char *msdfs_link = NULL;
2378 #ifdef HAVE_GFAPI_VER_7_11
2379 glfs_fd_t *pglfd = NULL;
2380 #else
2381 struct smb_filename *full_fname = NULL;
2382 #endif
2383
2384 /* Form the msdfs_link contents */
2385 msdfs_link = msdfs_link_string(frame,
2386 reflist,
2387 referral_count);
2388 if (msdfs_link == NULL) {
2389 goto out;
2390 }
2391
2392 #ifdef HAVE_GFAPI_VER_7_11
2393 pglfd = vfs_gluster_fetch_glfd(handle, dirfsp);
2394 if (pglfd == NULL) {
2395 DBG_ERR("Failed to fetch gluster fd\n");
2396 status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
2397 goto out;
2398 }
2399
2400 ret = glfs_symlinkat(msdfs_link, pglfd, smb_fname->base_name);
2401 #else
2402 full_fname = full_path_from_dirfsp_atname(talloc_tos(),
2403 dirfsp,
2404 smb_fname);
2405 if (full_fname == NULL) {
2406 goto out;
2407 }
2408
2409 ret = glfs_symlink(handle->data, msdfs_link, full_fname->base_name);
2410
2411 TALLOC_FREE(full_fname);
2412 #endif
2413 if (ret == 0) {
2414 status = NT_STATUS_OK;
2415 } else {
2416 status = map_nt_error_from_unix(errno);
2417 }
2418
2419 out:
2420
2421 TALLOC_FREE(frame);
2422 return status;
2423 }
2424
2425 /*
2426 * Read and return the contents of a DFS redirect given a
2427 * pathname. A caller can pass in NULL for ppreflist and
2428 * preferral_count but still determine if this was a
2429 * DFS redirect point by getting NT_STATUS_OK back
2430 * without incurring the overhead of reading and parsing
2431 * the referral contents.
2432 */
2433
2434 static NTSTATUS vfs_gluster_read_dfs_pathat(struct vfs_handle_struct *handle,
2435 TALLOC_CTX *mem_ctx,
2436 struct files_struct *dirfsp,
2437 struct smb_filename *smb_fname,
2438 struct referral **ppreflist,
2439 size_t *preferral_count)
2440 {
2441 NTSTATUS status = NT_STATUS_NO_MEMORY;
2442 size_t bufsize;
2443 char *link_target = NULL;
2444 int referral_len;
2445 bool ok;
2446 #if defined(HAVE_BROKEN_READLINK)
2447 char link_target_buf[PATH_MAX];
2448 #else
2449 char link_target_buf[7];
2450 #endif
2451 struct stat st;
2452 struct smb_filename *full_fname = NULL;
2453 int ret;
2454 #ifdef HAVE_GFAPI_VER_7_11
2455 glfs_fd_t *pglfd = NULL;
2456 #endif
2457
2458 if (is_named_stream(smb_fname)) {
2459 status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
2460 goto err;
2461 }
2462
2463 if (ppreflist == NULL && preferral_count == NULL) {
2464 /*
2465 * We're only checking if this is a DFS
2466 * redirect. We don't need to return data.
2467 */
2468 bufsize = sizeof(link_target_buf);
2469 link_target = link_target_buf;
2470 } else {
2471 bufsize = PATH_MAX;
2472 link_target = talloc_array(mem_ctx, char, bufsize);
2473 if (!link_target) {
2474 goto err;
2475 }
2476 }
2477
2478 full_fname = full_path_from_dirfsp_atname(talloc_tos(),
2479 dirfsp,
2480 smb_fname);
2481 if (full_fname == NULL) {
2482 status = NT_STATUS_NO_MEMORY;
2483 goto err;
2484 }
2485
2486 ret = glfs_lstat(handle->data, full_fname->base_name, &st);
2487 if (ret < 0) {
2488 status = map_nt_error_from_unix(errno);
2489 goto err;
2490 }
2491
2492 #ifdef HAVE_GFAPI_VER_7_11
2493 pglfd = vfs_gluster_fetch_glfd(handle, dirfsp);
2494 if (pglfd == NULL) {
2495 DBG_ERR("Failed to fetch gluster fd\n");
2496 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
2497 }
2498
2499 referral_len = glfs_readlinkat(pglfd,
2500 smb_fname->base_name,
2501 link_target,
2502 bufsize - 1);
2503 #else
2504 referral_len = glfs_readlink(handle->data,
2505 full_fname->base_name,
2506 link_target,
2507 bufsize - 1);
2508 #endif
2509 if (referral_len < 0) {
2510 if (errno == EINVAL) {
2511 DBG_INFO("%s is not a link.\n", full_fname->base_name);
2512 status = NT_STATUS_OBJECT_TYPE_MISMATCH;
2513 } else {
2514 status = map_nt_error_from_unix(errno);
2515 DBG_ERR("Error reading "
2516 "msdfs link %s: %s\n",
2517 full_fname->base_name,
2518 strerror(errno));
2519 }
2520 goto err;
2521 }
2522 link_target[referral_len] = '\0';
2523
2524 DBG_INFO("%s -> %s\n",
2525 full_fname->base_name,
2526 link_target);
2527
2528 if (!strnequal(link_target, "msdfs:", 6)) {
2529 status = NT_STATUS_OBJECT_TYPE_MISMATCH;
2530 goto err;
2531 }
2532
2533 if (ppreflist == NULL && preferral_count == NULL) {
2534 /* Early return for checking if this is a DFS link. */
2535 TALLOC_FREE(full_fname);
2536 smb_stat_ex_from_stat(&smb_fname->st, &st);
2537 return NT_STATUS_OK;
2538 }
2539
2540 ok = parse_msdfs_symlink(mem_ctx,
2541 lp_msdfs_shuffle_referrals(SNUM(handle->conn)),
2542 link_target,
2543 ppreflist,
2544 preferral_count);
2545
2546 if (ok) {
2547 smb_stat_ex_from_stat(&smb_fname->st, &st);
2548 status = NT_STATUS_OK;
2549 } else {
2550 status = NT_STATUS_NO_MEMORY;
2551 }
2552
2553 err:
2554
2555 if (link_target != link_target_buf) {
2556 TALLOC_FREE(link_target);
2557 }
2558 TALLOC_FREE(full_fname);
2559 return status;
2560 }
2561
2562 static struct vfs_fn_pointers glusterfs_fns = {
2563
2564 /* Disk Operations */
2565
2566 .connect_fn = vfs_gluster_connect,
2567 .disconnect_fn = vfs_gluster_disconnect,
2568 .disk_free_fn = vfs_gluster_disk_free,
2569 .get_quota_fn = vfs_gluster_get_quota,
2570 .set_quota_fn = vfs_gluster_set_quota,
2571 .statvfs_fn = vfs_gluster_statvfs,
2572 .fs_capabilities_fn = vfs_gluster_fs_capabilities,
2573
2574 .get_dfs_referrals_fn = NULL,
2575
2576 /* Directory Operations */
2577
2578 .fdopendir_fn = vfs_gluster_fdopendir,
2579 .readdir_fn = vfs_gluster_readdir,
2580 .rewind_dir_fn = vfs_gluster_rewinddir,
2581 .mkdirat_fn = vfs_gluster_mkdirat,
2582 .closedir_fn = vfs_gluster_closedir,
2583
2584 /* File Operations */
2585
2586 .openat_fn = vfs_gluster_openat,
2587 .create_file_fn = NULL,
2588 .close_fn = vfs_gluster_close,
2589 .pread_fn = vfs_gluster_pread,
2590 .pread_send_fn = vfs_gluster_pread_send,
2591 .pread_recv_fn = vfs_gluster_pread_recv,
2592 .pwrite_fn = vfs_gluster_pwrite,
2593 .pwrite_send_fn = vfs_gluster_pwrite_send,
2594 .pwrite_recv_fn = vfs_gluster_pwrite_recv,
2595 .lseek_fn = vfs_gluster_lseek,
2596 .sendfile_fn = vfs_gluster_sendfile,
2597 .recvfile_fn = vfs_gluster_recvfile,
2598 .renameat_fn = vfs_gluster_renameat,
2599 .fsync_send_fn = vfs_gluster_fsync_send,
2600 .fsync_recv_fn = vfs_gluster_fsync_recv,
2601
2602 .stat_fn = vfs_gluster_stat,
2603 .fstat_fn = vfs_gluster_fstat,
2604 .fstatat_fn = vfs_gluster_fstatat,
2605 .lstat_fn = vfs_gluster_lstat,
2606 .get_alloc_size_fn = vfs_gluster_get_alloc_size,
2607 .unlinkat_fn = vfs_gluster_unlinkat,
2608
2609 .fchmod_fn = vfs_gluster_fchmod,
2610 .fchown_fn = vfs_gluster_fchown,
2611 .lchown_fn = vfs_gluster_lchown,
2612 .chdir_fn = vfs_gluster_chdir,
2613 .getwd_fn = vfs_gluster_getwd,
2614 .fntimes_fn = vfs_gluster_fntimes,
2615 .ftruncate_fn = vfs_gluster_ftruncate,
2616 .fallocate_fn = vfs_gluster_fallocate,
2617 .lock_fn = vfs_gluster_lock,
2618 .filesystem_sharemode_fn = vfs_gluster_filesystem_sharemode,
2619 .fcntl_fn = vfs_gluster_fcntl,
2620 .linux_setlease_fn = vfs_gluster_linux_setlease,
2621 .getlock_fn = vfs_gluster_getlock,
2622 .symlinkat_fn = vfs_gluster_symlinkat,
2623 .readlinkat_fn = vfs_gluster_readlinkat,
2624 .linkat_fn = vfs_gluster_linkat,
2625 .mknodat_fn = vfs_gluster_mknodat,
2626 .realpath_fn = vfs_gluster_realpath,
2627 .fchflags_fn = vfs_gluster_fchflags,
2628 .file_id_create_fn = NULL,
2629 .fstreaminfo_fn = NULL,
2630 .get_real_filename_at_fn = vfs_gluster_get_real_filename_at,
2631 .connectpath_fn = vfs_gluster_connectpath,
2632 .create_dfs_pathat_fn = vfs_gluster_create_dfs_pathat,
2633 .read_dfs_pathat_fn = vfs_gluster_read_dfs_pathat,
2634
2635 .brl_lock_windows_fn = NULL,
2636 .brl_unlock_windows_fn = NULL,
2637 .strict_lock_check_fn = NULL,
2638 .translate_name_fn = NULL,
2639 .fsctl_fn = NULL,
2640
2641 /* NT ACL Operations */
2642 .fget_nt_acl_fn = NULL,
2643 .fset_nt_acl_fn = NULL,
2644 .audit_file_fn = NULL,
2645
2646 /* Posix ACL Operations */
2647 .sys_acl_get_fd_fn = posixacl_xattr_acl_get_fd,
2648 .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
2649 .sys_acl_set_fd_fn = posixacl_xattr_acl_set_fd,
2650 .sys_acl_delete_def_fd_fn = posixacl_xattr_acl_delete_def_fd,
2651
2652 /* EA Operations */
2653 .getxattrat_send_fn = vfs_not_implemented_getxattrat_send,
2654 .getxattrat_recv_fn = vfs_not_implemented_getxattrat_recv,
2655 .fgetxattr_fn = vfs_gluster_fgetxattr,
2656 .flistxattr_fn = vfs_gluster_flistxattr,
2657 .fremovexattr_fn = vfs_gluster_fremovexattr,
2658 .fsetxattr_fn = vfs_gluster_fsetxattr,
2659
2660 /* AIO Operations */
2661 .aio_force_fn = vfs_gluster_aio_force,
2662
2663 /* Durable handle Operations */
2664 .durable_cookie_fn = NULL,
2665 .durable_disconnect_fn = NULL,
2666 .durable_reconnect_fn = NULL,
2667 };
2668
2669 static_decl_vfs;
2670 NTSTATUS vfs_glusterfs_init(TALLOC_CTX *ctx)
2671 {
2672 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
2673 "glusterfs", &glusterfs_fns);
2674 }
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