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s4:dsdb/password_hash: split out a password_hash_needed() function
[Samba.git] / source3 / modules / vfs_glusterfs.c
blob5ffbee01eea800fe7eddc1dba0c3648b7fe477f1
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 "api/glfs.h"
42 #include "lib/util/dlinklist.h"
43 #include "lib/util/tevent_unix.h"
44 #include "lib/tevent/tevent_internal.h"
45 #include "smbd/globals.h"
46 #include "lib/util/sys_rw.h"
47 #include "smbprofile.h"
48
49 #define DEFAULT_VOLFILE_SERVER "localhost"
50
51 static int read_fd = -1;
52 static int write_fd = -1;
53 static struct tevent_fd *aio_read_event = NULL;
54
55 /**
56 * Helper to convert struct stat to struct stat_ex.
57 */
58 static void smb_stat_ex_from_stat(struct stat_ex *dst, const struct stat *src)
59 {
60 ZERO_STRUCTP(dst);
61
62 dst->st_ex_dev = src->st_dev;
63 dst->st_ex_ino = src->st_ino;
64 dst->st_ex_mode = src->st_mode;
65 dst->st_ex_nlink = src->st_nlink;
66 dst->st_ex_uid = src->st_uid;
67 dst->st_ex_gid = src->st_gid;
68 dst->st_ex_rdev = src->st_rdev;
69 dst->st_ex_size = src->st_size;
70 dst->st_ex_atime.tv_sec = src->st_atime;
71 dst->st_ex_mtime.tv_sec = src->st_mtime;
72 dst->st_ex_ctime.tv_sec = src->st_ctime;
73 dst->st_ex_btime.tv_sec = src->st_mtime;
74 dst->st_ex_blksize = src->st_blksize;
75 dst->st_ex_blocks = src->st_blocks;
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 }
83
84 /* pre-opened glfs_t */
85
86 static struct glfs_preopened {
87 char *volume;
88 char *connectpath;
89 glfs_t *fs;
90 int ref;
91 struct glfs_preopened *next, *prev;
92 } *glfs_preopened;
93
94
95 static int glfs_set_preopened(const char *volume, const char *connectpath, glfs_t *fs)
96 {
97 struct glfs_preopened *entry = NULL;
98
99 entry = talloc_zero(NULL, struct glfs_preopened);
100 if (!entry) {
101 errno = ENOMEM;
102 return -1;
103 }
104
105 entry->volume = talloc_strdup(entry, volume);
106 if (!entry->volume) {
107 talloc_free(entry);
108 errno = ENOMEM;
109 return -1;
110 }
111
112 entry->connectpath = talloc_strdup(entry, connectpath);
113 if (entry->connectpath == NULL) {
114 talloc_free(entry);
115 errno = ENOMEM;
116 return -1;
117 }
118
119 entry->fs = fs;
120 entry->ref = 1;
121
122 DLIST_ADD(glfs_preopened, entry);
123
124 return 0;
125 }
126
127 static glfs_t *glfs_find_preopened(const char *volume, const char *connectpath)
128 {
129 struct glfs_preopened *entry = NULL;
130
131 for (entry = glfs_preopened; entry; entry = entry->next) {
132 if (strcmp(entry->volume, volume) == 0 &&
133 strcmp(entry->connectpath, connectpath) == 0)
134 {
135 entry->ref++;
136 return entry->fs;
137 }
138 }
139
140 return NULL;
141 }
142
143 static void glfs_clear_preopened(glfs_t *fs)
144 {
145 struct glfs_preopened *entry = NULL;
146
147 for (entry = glfs_preopened; entry; entry = entry->next) {
148 if (entry->fs == fs) {
149 if (--entry->ref)
150 return;
151
152 DLIST_REMOVE(glfs_preopened, entry);
153
154 glfs_fini(entry->fs);
155 talloc_free(entry);
156 }
157 }
158 }
159
160 /* Disk Operations */
161
162 static int vfs_gluster_connect(struct vfs_handle_struct *handle,
163 const char *service,
164 const char *user)
165 {
166 const char *volfile_server;
167 const char *volume;
168 char *logfile;
169 int loglevel;
170 glfs_t *fs = NULL;
171 TALLOC_CTX *tmp_ctx;
172 int ret = 0;
173
174 tmp_ctx = talloc_new(NULL);
175 if (tmp_ctx == NULL) {
176 ret = -1;
177 goto done;
178 }
179 logfile = lp_parm_talloc_string(tmp_ctx, SNUM(handle->conn), "glusterfs",
180 "logfile", NULL);
181
182 loglevel = lp_parm_int(SNUM(handle->conn), "glusterfs", "loglevel", -1);
183
184 volfile_server = lp_parm_const_string(SNUM(handle->conn), "glusterfs",
185 "volfile_server", NULL);
186 if (volfile_server == NULL) {
187 volfile_server = DEFAULT_VOLFILE_SERVER;
188 }
189
190 volume = lp_parm_const_string(SNUM(handle->conn), "glusterfs", "volume",
191 NULL);
192 if (volume == NULL) {
193 volume = service;
194 }
195
196 fs = glfs_find_preopened(volume, handle->conn->connectpath);
197 if (fs) {
198 goto done;
199 }
200
201 fs = glfs_new(volume);
202 if (fs == NULL) {
203 ret = -1;
204 goto done;
205 }
206
207 ret = glfs_set_volfile_server(fs, "tcp", volfile_server, 0);
208 if (ret < 0) {
209 DEBUG(0, ("Failed to set volfile_server %s\n", volfile_server));
210 goto done;
211 }
212
213 ret = glfs_set_xlator_option(fs, "*-md-cache", "cache-posix-acl",
214 "true");
215 if (ret < 0) {
216 DEBUG(0, ("%s: Failed to set xlator options\n", volume));
217 goto done;
218 }
219
220
221 ret = glfs_set_xlator_option(fs, "*-snapview-client",
222 "snapdir-entry-path",
223 handle->conn->connectpath);
224 if (ret < 0) {
225 DEBUG(0, ("%s: Failed to set xlator option:"
226 " snapdir-entry-path\n", volume));
227 glfs_fini(fs);
228 return -1;
229 }
230
231 ret = glfs_set_logging(fs, logfile, loglevel);
232 if (ret < 0) {
233 DEBUG(0, ("%s: Failed to set logfile %s loglevel %d\n",
234 volume, logfile, loglevel));
235 goto done;
236 }
237
238 ret = glfs_init(fs);
239 if (ret < 0) {
240 DEBUG(0, ("%s: Failed to initialize volume (%s)\n",
241 volume, strerror(errno)));
242 goto done;
243 }
244
245 ret = glfs_set_preopened(volume, handle->conn->connectpath, fs);
246 if (ret < 0) {
247 DEBUG(0, ("%s: Failed to register volume (%s)\n",
248 volume, strerror(errno)));
249 goto done;
250 }
251 done:
252 talloc_free(tmp_ctx);
253 if (ret < 0) {
254 if (fs)
255 glfs_fini(fs);
256 return -1;
257 } else {
258 DEBUG(0, ("%s: Initialized volume from server %s\n",
259 volume, volfile_server));
260 handle->data = fs;
261 return 0;
262 }
263 }
264
265 static void vfs_gluster_disconnect(struct vfs_handle_struct *handle)
266 {
267 glfs_t *fs = NULL;
268
269 fs = handle->data;
270
271 glfs_clear_preopened(fs);
272 }
273
274 static uint64_t vfs_gluster_disk_free(struct vfs_handle_struct *handle,
275 const char *path, uint64_t *bsize_p,
276 uint64_t *dfree_p, uint64_t *dsize_p)
277 {
278 struct statvfs statvfs = { 0, };
279 int ret;
280
281 ret = glfs_statvfs(handle->data, path, &statvfs);
282 if (ret < 0) {
283 return -1;
284 }
285
286 if (bsize_p != NULL) {
287 *bsize_p = (uint64_t)statvfs.f_bsize; /* Block size */
288 }
289 if (dfree_p != NULL) {
290 *dfree_p = (uint64_t)statvfs.f_bavail; /* Available Block units */
291 }
292 if (dsize_p != NULL) {
293 *dsize_p = (uint64_t)statvfs.f_blocks; /* Total Block units */
294 }
295
296 return (uint64_t)statvfs.f_bavail;
297 }
298
299 static int vfs_gluster_get_quota(struct vfs_handle_struct *handle,
300 const char *path,
301 enum SMB_QUOTA_TYPE qtype, unid_t id,
302 SMB_DISK_QUOTA *qt)
303 {
304 errno = ENOSYS;
305 return -1;
306 }
307
308 static int
309 vfs_gluster_set_quota(struct vfs_handle_struct *handle,
310 enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
311 {
312 errno = ENOSYS;
313 return -1;
314 }
315
316 static int vfs_gluster_statvfs(struct vfs_handle_struct *handle,
317 const char *path,
318 struct vfs_statvfs_struct *vfs_statvfs)
319 {
320 struct statvfs statvfs = { 0, };
321 int ret;
322
323 ret = glfs_statvfs(handle->data, path, &statvfs);
324 if (ret < 0) {
325 DEBUG(0, ("glfs_statvfs(%s) failed: %s\n",
326 path, strerror(errno)));
327 return -1;
328 }
329
330 ZERO_STRUCTP(vfs_statvfs);
331
332 vfs_statvfs->OptimalTransferSize = statvfs.f_frsize;
333 vfs_statvfs->BlockSize = statvfs.f_bsize;
334 vfs_statvfs->TotalBlocks = statvfs.f_blocks;
335 vfs_statvfs->BlocksAvail = statvfs.f_bfree;
336 vfs_statvfs->UserBlocksAvail = statvfs.f_bavail;
337 vfs_statvfs->TotalFileNodes = statvfs.f_files;
338 vfs_statvfs->FreeFileNodes = statvfs.f_ffree;
339 vfs_statvfs->FsIdentifier = statvfs.f_fsid;
340 vfs_statvfs->FsCapabilities =
341 FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
342
343 return ret;
344 }
345
346 static uint32_t vfs_gluster_fs_capabilities(struct vfs_handle_struct *handle,
347 enum timestamp_set_resolution *p_ts_res)
348 {
349 uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
350
351 #ifdef STAT_HAVE_NSEC
352 *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
353 #endif
354
355 return caps;
356 }
357
358 static DIR *vfs_gluster_opendir(struct vfs_handle_struct *handle,
359 const struct smb_filename *smb_fname,
360 const char *mask,
361 uint32_t attributes)
362 {
363 glfs_fd_t *fd;
364
365 fd = glfs_opendir(handle->data, smb_fname->base_name);
366 if (fd == NULL) {
367 DEBUG(0, ("glfs_opendir(%s) failed: %s\n",
368 smb_fname->base_name, strerror(errno)));
369 }
370
371 return (DIR *) fd;
372 }
373
374 static DIR *vfs_gluster_fdopendir(struct vfs_handle_struct *handle,
375 files_struct *fsp, const char *mask,
376 uint32_t attributes)
377 {
378 return (DIR *) *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
379 }
380
381 static int vfs_gluster_closedir(struct vfs_handle_struct *handle, DIR *dirp)
382 {
383 return glfs_closedir((void *)dirp);
384 }
385
386 static struct dirent *vfs_gluster_readdir(struct vfs_handle_struct *handle,
387 DIR *dirp, SMB_STRUCT_STAT *sbuf)
388 {
389 static char direntbuf[512];
390 int ret;
391 struct stat stat;
392 struct dirent *dirent = 0;
393
394 if (sbuf != NULL) {
395 ret = glfs_readdirplus_r((void *)dirp, &stat, (void *)direntbuf,
396 &dirent);
397 } else {
398 ret = glfs_readdir_r((void *)dirp, (void *)direntbuf, &dirent);
399 }
400
401 if ((ret < 0) || (dirent == NULL)) {
402 return NULL;
403 }
404
405 if (sbuf != NULL) {
406 smb_stat_ex_from_stat(sbuf, &stat);
407 }
408
409 return dirent;
410 }
411
412 static long vfs_gluster_telldir(struct vfs_handle_struct *handle, DIR *dirp)
413 {
414 return glfs_telldir((void *)dirp);
415 }
416
417 static void vfs_gluster_seekdir(struct vfs_handle_struct *handle, DIR *dirp,
418 long offset)
419 {
420 glfs_seekdir((void *)dirp, offset);
421 }
422
423 static void vfs_gluster_rewinddir(struct vfs_handle_struct *handle, DIR *dirp)
424 {
425 glfs_seekdir((void *)dirp, 0);
426 }
427
428 static void vfs_gluster_init_search_op(struct vfs_handle_struct *handle,
429 DIR *dirp)
430 {
431 return;
432 }
433
434 static int vfs_gluster_mkdir(struct vfs_handle_struct *handle,
435 const struct smb_filename *smb_fname,
436 mode_t mode)
437 {
438 return glfs_mkdir(handle->data, smb_fname->base_name, mode);
439 }
440
441 static int vfs_gluster_rmdir(struct vfs_handle_struct *handle,
442 const struct smb_filename *smb_fname)
443 {
444 return glfs_rmdir(handle->data, smb_fname->base_name);
445 }
446
447 static int vfs_gluster_open(struct vfs_handle_struct *handle,
448 struct smb_filename *smb_fname, files_struct *fsp,
449 int flags, mode_t mode)
450 {
451 glfs_fd_t *glfd;
452 glfs_fd_t **p_tmp;
453
454 if (flags & O_DIRECTORY) {
455 glfd = glfs_opendir(handle->data, smb_fname->base_name);
456 } else if (flags & O_CREAT) {
457 glfd = glfs_creat(handle->data, smb_fname->base_name, flags,
458 mode);
459 } else {
460 glfd = glfs_open(handle->data, smb_fname->base_name, flags);
461 }
462
463 if (glfd == NULL) {
464 return -1;
465 }
466 p_tmp = (glfs_fd_t **)VFS_ADD_FSP_EXTENSION(handle, fsp,
467 glfs_fd_t *, NULL);
468 *p_tmp = glfd;
469 /* An arbitrary value for error reporting, so you know its us. */
470 return 13371337;
471 }
472
473 static int vfs_gluster_close(struct vfs_handle_struct *handle,
474 files_struct *fsp)
475 {
476 glfs_fd_t *glfd;
477 glfd = *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
478 VFS_REMOVE_FSP_EXTENSION(handle, fsp);
479 return glfs_close(glfd);
480 }
481
482 static ssize_t vfs_gluster_read(struct vfs_handle_struct *handle,
483 files_struct *fsp, void *data, size_t n)
484 {
485 return glfs_read(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, 0);
486 }
487
488 static ssize_t vfs_gluster_pread(struct vfs_handle_struct *handle,
489 files_struct *fsp, void *data, size_t n,
490 off_t offset)
491 {
492 return glfs_pread(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, offset, 0);
493 }
494
495 struct glusterfs_aio_state;
496
497 struct glusterfs_aio_wrapper {
498 struct glusterfs_aio_state *state;
499 };
500
501 struct glusterfs_aio_state {
502 ssize_t ret;
503 struct tevent_req *req;
504 bool cancelled;
505 struct vfs_aio_state vfs_aio_state;
506 struct timespec start;
507 };
508
509 static int aio_wrapper_destructor(struct glusterfs_aio_wrapper *wrap)
510 {
511 if (wrap->state != NULL) {
512 wrap->state->cancelled = true;
513 }
514
515 return 0;
516 }
517
518 /*
519 * This function is the callback that will be called on glusterfs
520 * threads once the async IO submitted is complete. To notify
521 * Samba of the completion we use a pipe based queue.
522 */
523 static void aio_glusterfs_done(glfs_fd_t *fd, ssize_t ret, void *data)
524 {
525 struct glusterfs_aio_state *state = NULL;
526 int sts = 0;
527 struct timespec end;
528
529 state = (struct glusterfs_aio_state *)data;
530
531 PROFILE_TIMESTAMP(&end);
532
533 if (ret < 0) {
534 state->ret = -1;
535 state->vfs_aio_state.error = errno;
536 } else {
537 state->ret = ret;
538 }
539 state->vfs_aio_state.duration = nsec_time_diff(&end, &state->start);
540
541 /*
542 * Write the state pointer to glusterfs_aio_state to the
543 * pipe, so we can call tevent_req_done() from the main thread,
544 * because tevent_req_done() is not designed to be executed in
545 * the multithread environment, so tevent_req_done() must be
546 * executed from the smbd main thread.
547 *
548 * write(2) on pipes with sizes under _POSIX_PIPE_BUF
549 * in size is atomic, without this, the use op pipes in this
550 * code would not work.
551 *
552 * sys_write is a thin enough wrapper around write(2)
553 * that we can trust it here.
554 */
555
556 sts = sys_write(write_fd, &state, sizeof(struct glusterfs_aio_state *));
557 if (sts < 0) {
558 DEBUG(0,("\nWrite to pipe failed (%s)", strerror(errno)));
559 }
560
561 return;
562 }
563
564 /*
565 * Read each req off the pipe and process it.
566 */
567 static void aio_tevent_fd_done(struct tevent_context *event_ctx,
568 struct tevent_fd *fde,
569 uint16_t flags, void *data)
570 {
571 struct tevent_req *req = NULL;
572 struct glusterfs_aio_state *state = NULL;
573 int sts = 0;
574
575 /*
576 * read(2) on pipes is atomic if the needed data is available
577 * in the pipe, per SUS and POSIX. Because we always write
578 * to the pipe in sizeof(struct tevent_req *) chunks, we can
579 * always read in those chunks, atomically.
580 *
581 * sys_read is a thin enough wrapper around read(2) that we
582 * can trust it here.
583 */
584
585 sts = sys_read(read_fd, &state, sizeof(struct glusterfs_aio_state *));
586
587 if (sts < 0) {
588 DEBUG(0,("\nRead from pipe failed (%s)", strerror(errno)));
589 }
590
591 /* if we've cancelled the op, there is no req, so just clean up. */
592 if (state->cancelled == true) {
593 TALLOC_FREE(state);
594 return;
595 }
596
597 req = state->req;
598
599 if (req) {
600 tevent_req_done(req);
601 }
602 return;
603 }
604
605 static bool init_gluster_aio(struct vfs_handle_struct *handle)
606 {
607 int fds[2];
608 int ret = -1;
609
610 if (read_fd != -1) {
611 /*
612 * Already initialized.
613 */
614 return true;
615 }
616
617 ret = pipe(fds);
618 if (ret == -1) {
619 goto fail;
620 }
621
622 read_fd = fds[0];
623 write_fd = fds[1];
624
625 aio_read_event = tevent_add_fd(handle->conn->sconn->ev_ctx,
626 NULL,
627 read_fd,
628 TEVENT_FD_READ,
629 aio_tevent_fd_done,
630 NULL);
631 if (aio_read_event == NULL) {
632 goto fail;
633 }
634
635 return true;
636 fail:
637 TALLOC_FREE(aio_read_event);
638 if (read_fd != -1) {
639 close(read_fd);
640 close(write_fd);
641 read_fd = -1;
642 write_fd = -1;
643 }
644 return false;
645 }
646
647 static struct glusterfs_aio_state *aio_state_create(TALLOC_CTX *mem_ctx)
648 {
649 struct tevent_req *req = NULL;
650 struct glusterfs_aio_state *state = NULL;
651 struct glusterfs_aio_wrapper *wrapper = NULL;
652
653 req = tevent_req_create(mem_ctx, &wrapper, struct glusterfs_aio_wrapper);
654
655 if (req == NULL) {
656 return NULL;
657 }
658
659 state = talloc_zero(NULL, struct glusterfs_aio_state);
660
661 if (state == NULL) {
662 TALLOC_FREE(req);
663 return NULL;
664 }
665
666 talloc_set_destructor(wrapper, aio_wrapper_destructor);
667 state->cancelled = false;
668 state->req = req;
669
670 wrapper->state = state;
671
672 return state;
673 }
674
675 static struct tevent_req *vfs_gluster_pread_send(struct vfs_handle_struct
676 *handle, TALLOC_CTX *mem_ctx,
677 struct tevent_context *ev,
678 files_struct *fsp,
679 void *data, size_t n,
680 off_t offset)
681 {
682 struct glusterfs_aio_state *state = NULL;
683 struct tevent_req *req = NULL;
684 int ret = 0;
685
686 state = aio_state_create(mem_ctx);
687
688 if (state == NULL) {
689 return NULL;
690 }
691
692 req = state->req;
693
694 if (!init_gluster_aio(handle)) {
695 tevent_req_error(req, EIO);
696 return tevent_req_post(req, ev);
697 }
698
699 PROFILE_TIMESTAMP(&state->start);
700 ret = glfs_pread_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
701 fsp), data, n, offset, 0, aio_glusterfs_done,
702 state);
703 if (ret < 0) {
704 tevent_req_error(req, -ret);
705 return tevent_req_post(req, ev);
706 }
707
708 return req;
709 }
710
711 static struct tevent_req *vfs_gluster_pwrite_send(struct vfs_handle_struct
712 *handle, TALLOC_CTX *mem_ctx,
713 struct tevent_context *ev,
714 files_struct *fsp,
715 const void *data, size_t n,
716 off_t offset)
717 {
718 struct glusterfs_aio_state *state = NULL;
719 struct tevent_req *req = NULL;
720 int ret = 0;
721
722 state = aio_state_create(mem_ctx);
723
724 if (state == NULL) {
725 return NULL;
726 }
727
728 req = state->req;
729
730 if (!init_gluster_aio(handle)) {
731 tevent_req_error(req, EIO);
732 return tevent_req_post(req, ev);
733 }
734
735 PROFILE_TIMESTAMP(&state->start);
736 ret = glfs_pwrite_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
737 fsp), data, n, offset, 0, aio_glusterfs_done,
738 state);
739 if (ret < 0) {
740 tevent_req_error(req, -ret);
741 return tevent_req_post(req, ev);
742 }
743
744 return req;
745 }
746
747 static ssize_t vfs_gluster_recv(struct tevent_req *req,
748 struct vfs_aio_state *vfs_aio_state)
749 {
750 struct glusterfs_aio_wrapper *wrapper = NULL;
751 int ret = 0;
752
753 wrapper = tevent_req_data(req, struct glusterfs_aio_wrapper);
754
755 if (wrapper == NULL) {
756 return -1;
757 }
758
759 if (wrapper->state == NULL) {
760 return -1;
761 }
762
763 if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
764 return -1;
765 }
766
767 *vfs_aio_state = wrapper->state->vfs_aio_state;
768 ret = wrapper->state->ret;
769
770 /* Clean up the state, it is in a NULL context. */
771
772 TALLOC_FREE(wrapper->state);
773
774 return ret;
775 }
776
777 static ssize_t vfs_gluster_write(struct vfs_handle_struct *handle,
778 files_struct *fsp, const void *data, size_t n)
779 {
780 return glfs_write(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, 0);
781 }
782
783 static ssize_t vfs_gluster_pwrite(struct vfs_handle_struct *handle,
784 files_struct *fsp, const void *data,
785 size_t n, off_t offset)
786 {
787 return glfs_pwrite(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, offset, 0);
788 }
789
790 static off_t vfs_gluster_lseek(struct vfs_handle_struct *handle,
791 files_struct *fsp, off_t offset, int whence)
792 {
793 return glfs_lseek(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), offset, whence);
794 }
795
796 static ssize_t vfs_gluster_sendfile(struct vfs_handle_struct *handle, int tofd,
797 files_struct *fromfsp,
798 const DATA_BLOB *hdr,
799 off_t offset, size_t n)
800 {
801 errno = ENOTSUP;
802 return -1;
803 }
804
805 static ssize_t vfs_gluster_recvfile(struct vfs_handle_struct *handle,
806 int fromfd, files_struct *tofsp,
807 off_t offset, size_t n)
808 {
809 errno = ENOTSUP;
810 return -1;
811 }
812
813 static int vfs_gluster_rename(struct vfs_handle_struct *handle,
814 const struct smb_filename *smb_fname_src,
815 const struct smb_filename *smb_fname_dst)
816 {
817 return glfs_rename(handle->data, smb_fname_src->base_name,
818 smb_fname_dst->base_name);
819 }
820
821 static int vfs_gluster_fsync(struct vfs_handle_struct *handle,
822 files_struct *fsp)
823 {
824 return glfs_fsync(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp));
825 }
826
827 static struct tevent_req *vfs_gluster_fsync_send(struct vfs_handle_struct
828 *handle, TALLOC_CTX *mem_ctx,
829 struct tevent_context *ev,
830 files_struct *fsp)
831 {
832 struct tevent_req *req = NULL;
833 struct glusterfs_aio_state *state = NULL;
834 int ret = 0;
835
836 state = aio_state_create(mem_ctx);
837
838 if (state == NULL) {
839 return NULL;
840 }
841
842 req = state->req;
843
844 if (!init_gluster_aio(handle)) {
845 tevent_req_error(req, EIO);
846 return tevent_req_post(req, ev);
847 }
848
849 PROFILE_TIMESTAMP(&state->start);
850 ret = glfs_fsync_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
851 fsp), aio_glusterfs_done, req);
852 if (ret < 0) {
853 tevent_req_error(req, -ret);
854 return tevent_req_post(req, ev);
855 }
856 return req;
857 }
858
859 static int vfs_gluster_fsync_recv(struct tevent_req *req,
860 struct vfs_aio_state *vfs_aio_state)
861 {
862 /*
863 * Use implicit conversion ssize_t->int
864 */
865 return vfs_gluster_recv(req, vfs_aio_state);
866 }
867
868 static int vfs_gluster_stat(struct vfs_handle_struct *handle,
869 struct smb_filename *smb_fname)
870 {
871 struct stat st;
872 int ret;
873
874 ret = glfs_stat(handle->data, smb_fname->base_name, &st);
875 if (ret == 0) {
876 smb_stat_ex_from_stat(&smb_fname->st, &st);
877 }
878 if (ret < 0 && errno != ENOENT) {
879 DEBUG(0, ("glfs_stat(%s) failed: %s\n",
880 smb_fname->base_name, strerror(errno)));
881 }
882 return ret;
883 }
884
885 static int vfs_gluster_fstat(struct vfs_handle_struct *handle,
886 files_struct *fsp, SMB_STRUCT_STAT *sbuf)
887 {
888 struct stat st;
889 int ret;
890
891 ret = glfs_fstat(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), &st);
892 if (ret == 0) {
893 smb_stat_ex_from_stat(sbuf, &st);
894 }
895 if (ret < 0) {
896 DEBUG(0, ("glfs_fstat(%d) failed: %s\n",
897 fsp->fh->fd, strerror(errno)));
898 }
899 return ret;
900 }
901
902 static int vfs_gluster_lstat(struct vfs_handle_struct *handle,
903 struct smb_filename *smb_fname)
904 {
905 struct stat st;
906 int ret;
907
908 ret = glfs_lstat(handle->data, smb_fname->base_name, &st);
909 if (ret == 0) {
910 smb_stat_ex_from_stat(&smb_fname->st, &st);
911 }
912 if (ret < 0 && errno != ENOENT) {
913 DEBUG(0, ("glfs_lstat(%s) failed: %s\n",
914 smb_fname->base_name, strerror(errno)));
915 }
916 return ret;
917 }
918
919 static uint64_t vfs_gluster_get_alloc_size(struct vfs_handle_struct *handle,
920 files_struct *fsp,
921 const SMB_STRUCT_STAT *sbuf)
922 {
923 return sbuf->st_ex_blocks * 512;
924 }
925
926 static int vfs_gluster_unlink(struct vfs_handle_struct *handle,
927 const struct smb_filename *smb_fname)
928 {
929 return glfs_unlink(handle->data, smb_fname->base_name);
930 }
931
932 static int vfs_gluster_chmod(struct vfs_handle_struct *handle,
933 const struct smb_filename *smb_fname,
934 mode_t mode)
935 {
936 return glfs_chmod(handle->data, smb_fname->base_name, mode);
937 }
938
939 static int vfs_gluster_fchmod(struct vfs_handle_struct *handle,
940 files_struct *fsp, mode_t mode)
941 {
942 return glfs_fchmod(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), mode);
943 }
944
945 static int vfs_gluster_chown(struct vfs_handle_struct *handle,
946 const struct smb_filename *smb_fname,
947 uid_t uid,
948 gid_t gid)
949 {
950 return glfs_chown(handle->data, smb_fname->base_name, uid, gid);
951 }
952
953 static int vfs_gluster_fchown(struct vfs_handle_struct *handle,
954 files_struct *fsp, uid_t uid, gid_t gid)
955 {
956 return glfs_fchown(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), uid, gid);
957 }
958
959 static int vfs_gluster_lchown(struct vfs_handle_struct *handle,
960 const struct smb_filename *smb_fname,
961 uid_t uid,
962 gid_t gid)
963 {
964 return glfs_lchown(handle->data, smb_fname->base_name, uid, gid);
965 }
966
967 static int vfs_gluster_chdir(struct vfs_handle_struct *handle, const char *path)
968 {
969 return glfs_chdir(handle->data, path);
970 }
971
972 static char *vfs_gluster_getwd(struct vfs_handle_struct *handle)
973 {
974 char *cwd;
975 char *ret;
976
977 cwd = SMB_CALLOC_ARRAY(char, PATH_MAX);
978 if (cwd == NULL) {
979 return NULL;
980 }
981
982 ret = glfs_getcwd(handle->data, cwd, PATH_MAX - 1);
983 if (ret == 0) {
984 free(cwd);
985 }
986 return ret;
987 }
988
989 static int vfs_gluster_ntimes(struct vfs_handle_struct *handle,
990 const struct smb_filename *smb_fname,
991 struct smb_file_time *ft)
992 {
993 struct timespec times[2];
994
995 if (null_timespec(ft->atime)) {
996 times[0].tv_sec = smb_fname->st.st_ex_atime.tv_sec;
997 times[0].tv_nsec = smb_fname->st.st_ex_atime.tv_nsec;
998 } else {
999 times[0].tv_sec = ft->atime.tv_sec;
1000 times[0].tv_nsec = ft->atime.tv_nsec;
1001 }
1002
1003 if (null_timespec(ft->mtime)) {
1004 times[1].tv_sec = smb_fname->st.st_ex_mtime.tv_sec;
1005 times[1].tv_nsec = smb_fname->st.st_ex_mtime.tv_nsec;
1006 } else {
1007 times[1].tv_sec = ft->mtime.tv_sec;
1008 times[1].tv_nsec = ft->mtime.tv_nsec;
1009 }
1010
1011 if ((timespec_compare(&times[0],
1012 &smb_fname->st.st_ex_atime) == 0) &&
1013 (timespec_compare(&times[1],
1014 &smb_fname->st.st_ex_mtime) == 0)) {
1015 return 0;
1016 }
1017
1018 return glfs_utimens(handle->data, smb_fname->base_name, times);
1019 }
1020
1021 static int vfs_gluster_ftruncate(struct vfs_handle_struct *handle,
1022 files_struct *fsp, off_t offset)
1023 {
1024 return glfs_ftruncate(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), offset);
1025 }
1026
1027 static int vfs_gluster_fallocate(struct vfs_handle_struct *handle,
1028 struct files_struct *fsp,
1029 uint32_t mode,
1030 off_t offset, off_t len)
1031 {
1032 /* TODO: add support using glfs_fallocate() and glfs_zerofill() */
1033 errno = ENOTSUP;
1034 return -1;
1035 }
1036
1037 static char *vfs_gluster_realpath(struct vfs_handle_struct *handle,
1038 const char *path)
1039 {
1040 return glfs_realpath(handle->data, path, 0);
1041 }
1042
1043 static bool vfs_gluster_lock(struct vfs_handle_struct *handle,
1044 files_struct *fsp, int op, off_t offset,
1045 off_t count, int type)
1046 {
1047 struct flock flock = { 0, };
1048 int ret;
1049
1050 flock.l_type = type;
1051 flock.l_whence = SEEK_SET;
1052 flock.l_start = offset;
1053 flock.l_len = count;
1054 flock.l_pid = 0;
1055
1056 ret = glfs_posix_lock(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), op, &flock);
1057
1058 if (op == F_GETLK) {
1059 /* lock query, true if someone else has locked */
1060 if ((ret != -1) &&
1061 (flock.l_type != F_UNLCK) &&
1062 (flock.l_pid != 0) && (flock.l_pid != getpid()))
1063 return true;
1064 /* not me */
1065 return false;
1066 }
1067
1068 if (ret == -1) {
1069 return false;
1070 }
1071
1072 return true;
1073 }
1074
1075 static int vfs_gluster_kernel_flock(struct vfs_handle_struct *handle,
1076 files_struct *fsp, uint32_t share_mode,
1077 uint32_t access_mask)
1078 {
1079 errno = ENOSYS;
1080 return -1;
1081 }
1082
1083 static int vfs_gluster_linux_setlease(struct vfs_handle_struct *handle,
1084 files_struct *fsp, int leasetype)
1085 {
1086 errno = ENOSYS;
1087 return -1;
1088 }
1089
1090 static bool vfs_gluster_getlock(struct vfs_handle_struct *handle,
1091 files_struct *fsp, off_t *poffset,
1092 off_t *pcount, int *ptype, pid_t *ppid)
1093 {
1094 struct flock flock = { 0, };
1095 int ret;
1096
1097 flock.l_type = *ptype;
1098 flock.l_whence = SEEK_SET;
1099 flock.l_start = *poffset;
1100 flock.l_len = *pcount;
1101 flock.l_pid = 0;
1102
1103 ret = glfs_posix_lock(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), F_GETLK, &flock);
1104
1105 if (ret == -1) {
1106 return false;
1107 }
1108
1109 *ptype = flock.l_type;
1110 *poffset = flock.l_start;
1111 *pcount = flock.l_len;
1112 *ppid = flock.l_pid;
1113
1114 return true;
1115 }
1116
1117 static int vfs_gluster_symlink(struct vfs_handle_struct *handle,
1118 const char *oldpath, const char *newpath)
1119 {
1120 return glfs_symlink(handle->data, oldpath, newpath);
1121 }
1122
1123 static int vfs_gluster_readlink(struct vfs_handle_struct *handle,
1124 const char *path, char *buf, size_t bufsiz)
1125 {
1126 return glfs_readlink(handle->data, path, buf, bufsiz);
1127 }
1128
1129 static int vfs_gluster_link(struct vfs_handle_struct *handle,
1130 const char *oldpath, const char *newpath)
1131 {
1132 return glfs_link(handle->data, oldpath, newpath);
1133 }
1134
1135 static int vfs_gluster_mknod(struct vfs_handle_struct *handle, const char *path,
1136 mode_t mode, SMB_DEV_T dev)
1137 {
1138 return glfs_mknod(handle->data, path, mode, dev);
1139 }
1140
1141 static int vfs_gluster_chflags(struct vfs_handle_struct *handle,
1142 const char *path, unsigned int flags)
1143 {
1144 errno = ENOSYS;
1145 return -1;
1146 }
1147
1148 static int vfs_gluster_get_real_filename(struct vfs_handle_struct *handle,
1149 const char *path, const char *name,
1150 TALLOC_CTX *mem_ctx, char **found_name)
1151 {
1152 int ret;
1153 char key_buf[NAME_MAX + 64];
1154 char val_buf[NAME_MAX + 1];
1155
1156 if (strlen(name) >= NAME_MAX) {
1157 errno = ENAMETOOLONG;
1158 return -1;
1159 }
1160
1161 snprintf(key_buf, NAME_MAX + 64,
1162 "glusterfs.get_real_filename:%s", name);
1163
1164 ret = glfs_getxattr(handle->data, path, key_buf, val_buf, NAME_MAX + 1);
1165 if (ret == -1) {
1166 if (errno == ENODATA) {
1167 errno = EOPNOTSUPP;
1168 }
1169 return -1;
1170 }
1171
1172 *found_name = talloc_strdup(mem_ctx, val_buf);
1173 if (found_name[0] == NULL) {
1174 errno = ENOMEM;
1175 return -1;
1176 }
1177 return 0;
1178 }
1179
1180 static const char *vfs_gluster_connectpath(struct vfs_handle_struct *handle,
1181 const char *filename)
1182 {
1183 return handle->conn->connectpath;
1184 }
1185
1186 /* EA Operations */
1187
1188 static ssize_t vfs_gluster_getxattr(struct vfs_handle_struct *handle,
1189 const char *path, const char *name,
1190 void *value, size_t size)
1191 {
1192 return glfs_getxattr(handle->data, path, name, value, size);
1193 }
1194
1195 static ssize_t vfs_gluster_fgetxattr(struct vfs_handle_struct *handle,
1196 files_struct *fsp, const char *name,
1197 void *value, size_t size)
1198 {
1199 return glfs_fgetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name, value, size);
1200 }
1201
1202 static ssize_t vfs_gluster_listxattr(struct vfs_handle_struct *handle,
1203 const char *path, char *list, size_t size)
1204 {
1205 return glfs_listxattr(handle->data, path, list, size);
1206 }
1207
1208 static ssize_t vfs_gluster_flistxattr(struct vfs_handle_struct *handle,
1209 files_struct *fsp, char *list,
1210 size_t size)
1211 {
1212 return glfs_flistxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), list, size);
1213 }
1214
1215 static int vfs_gluster_removexattr(struct vfs_handle_struct *handle,
1216 const char *path, const char *name)
1217 {
1218 return glfs_removexattr(handle->data, path, name);
1219 }
1220
1221 static int vfs_gluster_fremovexattr(struct vfs_handle_struct *handle,
1222 files_struct *fsp, const char *name)
1223 {
1224 return glfs_fremovexattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name);
1225 }
1226
1227 static int vfs_gluster_setxattr(struct vfs_handle_struct *handle,
1228 const char *path, const char *name,
1229 const void *value, size_t size, int flags)
1230 {
1231 return glfs_setxattr(handle->data, path, name, value, size, flags);
1232 }
1233
1234 static int vfs_gluster_fsetxattr(struct vfs_handle_struct *handle,
1235 files_struct *fsp, const char *name,
1236 const void *value, size_t size, int flags)
1237 {
1238 return glfs_fsetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name, value, size,
1239 flags);
1240 }
1241
1242 /* AIO Operations */
1243
1244 static bool vfs_gluster_aio_force(struct vfs_handle_struct *handle,
1245 files_struct *fsp)
1246 {
1247 return false;
1248 }
1249
1250 /* Offline Operations */
1251
1252 static bool vfs_gluster_is_offline(struct vfs_handle_struct *handle,
1253 const struct smb_filename *fname,
1254 SMB_STRUCT_STAT *sbuf)
1255 {
1256 return false;
1257 }
1258
1259 static int vfs_gluster_set_offline(struct vfs_handle_struct *handle,
1260 const struct smb_filename *fname)
1261 {
1262 errno = ENOTSUP;
1263 return -1;
1264 }
1265
1266 /*
1267 Gluster ACL Format:
1268
1269 Size = 4 (header) + N * 8 (entry)
1270
1271 Offset Size Field (Little Endian)
1272 -------------------------------------
1273 0-3 4-byte Version
1274
1275 4-5 2-byte Entry-1 tag
1276 6-7 2-byte Entry-1 perm
1277 8-11 4-byte Entry-1 id
1278
1279 12-13 2-byte Entry-2 tag
1280 14-15 2-byte Entry-2 perm
1281 16-19 4-byte Entry-2 id
1282
1283 ...
1284
1285 */
1286
1287 /* header version */
1288 #define GLUSTER_ACL_VERSION 2
1289
1290 /* perm bits */
1291 #define GLUSTER_ACL_READ 0x04
1292 #define GLUSTER_ACL_WRITE 0x02
1293 #define GLUSTER_ACL_EXECUTE 0x01
1294
1295 /* tag values */
1296 #define GLUSTER_ACL_UNDEFINED_TAG 0x00
1297 #define GLUSTER_ACL_USER_OBJ 0x01
1298 #define GLUSTER_ACL_USER 0x02
1299 #define GLUSTER_ACL_GROUP_OBJ 0x04
1300 #define GLUSTER_ACL_GROUP 0x08
1301 #define GLUSTER_ACL_MASK 0x10
1302 #define GLUSTER_ACL_OTHER 0x20
1303
1304 #define GLUSTER_ACL_UNDEFINED_ID (-1)
1305
1306 #define GLUSTER_ACL_HEADER_SIZE 4
1307 #define GLUSTER_ACL_ENTRY_SIZE 8
1308
1309 #define GLUSTER_ACL_SIZE(n) (GLUSTER_ACL_HEADER_SIZE + (n * GLUSTER_ACL_ENTRY_SIZE))
1310
1311 static SMB_ACL_T mode_to_smb_acls(const struct stat *mode, TALLOC_CTX *mem_ctx)
1312 {
1313 struct smb_acl_t *result;
1314 int count;
1315
1316 count = 3;
1317 result = sys_acl_init(mem_ctx);
1318 if (!result) {
1319 errno = ENOMEM;
1320 return NULL;
1321 }
1322
1323 result->acl = talloc_array(result, struct smb_acl_entry, count);
1324 if (!result->acl) {
1325 errno = ENOMEM;
1326 talloc_free(result);
1327 return NULL;
1328 }
1329
1330 result->count = count;
1331
1332 result->acl[0].a_type = SMB_ACL_USER_OBJ;
1333 result->acl[0].a_perm = (mode->st_mode & S_IRWXU) >> 6;;
1334
1335 result->acl[1].a_type = SMB_ACL_GROUP_OBJ;
1336 result->acl[1].a_perm = (mode->st_mode & S_IRWXG) >> 3;;
1337
1338 result->acl[2].a_type = SMB_ACL_OTHER;
1339 result->acl[2].a_perm = mode->st_mode & S_IRWXO;;
1340
1341 return result;
1342 }
1343
1344 static SMB_ACL_T gluster_to_smb_acl(const char *buf, size_t xattr_size,
1345 TALLOC_CTX *mem_ctx)
1346 {
1347 int count;
1348 size_t size;
1349 struct smb_acl_entry *smb_ace;
1350 struct smb_acl_t *result;
1351 int i;
1352 int offset;
1353 uint16_t tag;
1354 uint16_t perm;
1355 uint32_t id;
1356
1357 size = xattr_size;
1358
1359 if (size < GLUSTER_ACL_HEADER_SIZE) {
1360 /* ACL should be at least as big as the header (4 bytes) */
1361 errno = EINVAL;
1362 return NULL;
1363 }
1364
1365 size -= GLUSTER_ACL_HEADER_SIZE; /* size of header = 4 bytes */
1366
1367 if (size % GLUSTER_ACL_ENTRY_SIZE) {
1368 /* Size of entries must strictly be a multiple of
1369 size of an ACE (8 bytes)
1370 */
1371 errno = EINVAL;
1372 return NULL;
1373 }
1374
1375 count = size / GLUSTER_ACL_ENTRY_SIZE;
1376
1377 /* Version is the first 4 bytes of the ACL */
1378 if (IVAL(buf, 0) != GLUSTER_ACL_VERSION) {
1379 DEBUG(0, ("Unknown gluster ACL version: %d\n",
1380 IVAL(buf, 0)));
1381 return NULL;
1382 }
1383 offset = GLUSTER_ACL_HEADER_SIZE;
1384
1385 result = sys_acl_init(mem_ctx);
1386 if (!result) {
1387 errno = ENOMEM;
1388 return NULL;
1389 }
1390
1391 result->acl = talloc_array(result, struct smb_acl_entry, count);
1392 if (!result->acl) {
1393 errno = ENOMEM;
1394 talloc_free(result);
1395 return NULL;
1396 }
1397
1398 result->count = count;
1399
1400 smb_ace = result->acl;
1401
1402 for (i = 0; i < count; i++) {
1403 /* TAG is the first 2 bytes of an entry */
1404 tag = SVAL(buf, offset);
1405 offset += 2;
1406
1407 /* PERM is the next 2 bytes of an entry */
1408 perm = SVAL(buf, offset);
1409 offset += 2;
1410
1411 /* ID is the last 4 bytes of an entry */
1412 id = IVAL(buf, offset);
1413 offset += 4;
1414
1415 switch(tag) {
1416 case GLUSTER_ACL_USER:
1417 smb_ace->a_type = SMB_ACL_USER;
1418 break;
1419 case GLUSTER_ACL_USER_OBJ:
1420 smb_ace->a_type = SMB_ACL_USER_OBJ;
1421 break;
1422 case GLUSTER_ACL_GROUP:
1423 smb_ace->a_type = SMB_ACL_GROUP;
1424 break;
1425 case GLUSTER_ACL_GROUP_OBJ:
1426 smb_ace->a_type = SMB_ACL_GROUP_OBJ;
1427 break;
1428 case GLUSTER_ACL_OTHER:
1429 smb_ace->a_type = SMB_ACL_OTHER;
1430 break;
1431 case GLUSTER_ACL_MASK:
1432 smb_ace->a_type = SMB_ACL_MASK;
1433 break;
1434 default:
1435 DEBUG(0, ("unknown tag type %d\n", (unsigned int) tag));
1436 return NULL;
1437 }
1438
1439
1440 switch(smb_ace->a_type) {
1441 case SMB_ACL_USER:
1442 smb_ace->info.user.uid = id;
1443 break;
1444 case SMB_ACL_GROUP:
1445 smb_ace->info.group.gid = id;
1446 break;
1447 default:
1448 break;
1449 }
1450
1451 smb_ace->a_perm = 0;
1452 smb_ace->a_perm |=
1453 ((perm & GLUSTER_ACL_READ) ? SMB_ACL_READ : 0);
1454 smb_ace->a_perm |=
1455 ((perm & GLUSTER_ACL_WRITE) ? SMB_ACL_WRITE : 0);
1456 smb_ace->a_perm |=
1457 ((perm & GLUSTER_ACL_EXECUTE) ? SMB_ACL_EXECUTE : 0);
1458
1459 smb_ace++;
1460 }
1461
1462 return result;
1463 }
1464
1465
1466 static int gluster_ace_cmp(const void *left, const void *right)
1467 {
1468 int ret = 0;
1469 uint16_t tag_left, tag_right;
1470 uint32_t id_left, id_right;
1471
1472 /*
1473 Sorting precedence:
1474
1475 - Smaller TAG values must be earlier.
1476
1477 - Within same TAG, smaller identifiers must be earlier, E.g:
1478 UID 0 entry must be earlier than UID 200
1479 GID 17 entry must be earlier than GID 19
1480 */
1481
1482 /* TAG is the first element in the entry */
1483 tag_left = SVAL(left, 0);
1484 tag_right = SVAL(right, 0);
1485
1486 ret = (tag_left - tag_right);
1487 if (!ret) {
1488 /* ID is the third element in the entry, after two short
1489 integers (tag and perm), i.e at offset 4.
1490 */
1491 id_left = IVAL(left, 4);
1492 id_right = IVAL(right, 4);
1493 ret = id_left - id_right;
1494 }
1495
1496 return ret;
1497 }
1498
1499
1500 static ssize_t smb_to_gluster_acl(SMB_ACL_T theacl, char *buf, size_t len)
1501 {
1502 ssize_t size;
1503 struct smb_acl_entry *smb_ace;
1504 int i;
1505 int count;
1506 uint16_t tag;
1507 uint16_t perm;
1508 uint32_t id;
1509 int offset;
1510
1511 count = theacl->count;
1512
1513 size = GLUSTER_ACL_HEADER_SIZE + (count * GLUSTER_ACL_ENTRY_SIZE);
1514 if (!buf) {
1515 return size;
1516 }
1517
1518 if (len < size) {
1519 errno = ERANGE;
1520 return -1;
1521 }
1522
1523 smb_ace = theacl->acl;
1524
1525 /* Version is the first 4 bytes of the ACL */
1526 SIVAL(buf, 0, GLUSTER_ACL_VERSION);
1527 offset = GLUSTER_ACL_HEADER_SIZE;
1528
1529 for (i = 0; i < count; i++) {
1530 /* Calculate tag */
1531 switch(smb_ace->a_type) {
1532 case SMB_ACL_USER:
1533 tag = GLUSTER_ACL_USER;
1534 break;
1535 case SMB_ACL_USER_OBJ:
1536 tag = GLUSTER_ACL_USER_OBJ;
1537 break;
1538 case SMB_ACL_GROUP:
1539 tag = GLUSTER_ACL_GROUP;
1540 break;
1541 case SMB_ACL_GROUP_OBJ:
1542 tag = GLUSTER_ACL_GROUP_OBJ;
1543 break;
1544 case SMB_ACL_OTHER:
1545 tag = GLUSTER_ACL_OTHER;
1546 break;
1547 case SMB_ACL_MASK:
1548 tag = GLUSTER_ACL_MASK;
1549 break;
1550 default:
1551 DEBUG(0, ("Unknown tag value %d\n",
1552 smb_ace->a_type));
1553 errno = EINVAL;
1554 return -1;
1555 }
1556
1557
1558 /* Calculate id */
1559 switch(smb_ace->a_type) {
1560 case SMB_ACL_USER:
1561 id = smb_ace->info.user.uid;
1562 break;
1563 case SMB_ACL_GROUP:
1564 id = smb_ace->info.group.gid;
1565 break;
1566 default:
1567 id = GLUSTER_ACL_UNDEFINED_ID;
1568 break;
1569 }
1570
1571 /* Calculate perm */
1572 perm = 0;
1573
1574 perm |=
1575 ((smb_ace->a_perm & SMB_ACL_READ) ? GLUSTER_ACL_READ : 0);
1576 perm |=
1577 ((smb_ace->a_perm & SMB_ACL_WRITE) ? GLUSTER_ACL_WRITE : 0);
1578 perm |=
1579 ((smb_ace->a_perm & SMB_ACL_EXECUTE) ? GLUSTER_ACL_EXECUTE : 0);
1580
1581
1582 /* TAG is the first 2 bytes of an entry */
1583 SSVAL(buf, offset, tag);
1584 offset += 2;
1585
1586 /* PERM is the next 2 bytes of an entry */
1587 SSVAL(buf, offset, perm);
1588 offset += 2;
1589
1590 /* ID is the last 4 bytes of an entry */
1591 SIVAL(buf, offset, id);
1592 offset += 4;
1593
1594 smb_ace++;
1595 }
1596
1597 /* Skip the header, sort @count number of 8-byte entries */
1598 qsort(buf+GLUSTER_ACL_HEADER_SIZE, count, GLUSTER_ACL_ENTRY_SIZE,
1599 gluster_ace_cmp);
1600
1601 return size;
1602 }
1603
1604
1605 static SMB_ACL_T vfs_gluster_sys_acl_get_file(struct vfs_handle_struct *handle,
1606 const char *path_p,
1607 SMB_ACL_TYPE_T type,
1608 TALLOC_CTX *mem_ctx)
1609 {
1610 struct smb_acl_t *result;
1611 struct stat st;
1612 char *buf;
1613 const char *key;
1614 ssize_t ret, size = GLUSTER_ACL_SIZE(20);
1615
1616 switch (type) {
1617 case SMB_ACL_TYPE_ACCESS:
1618 key = "system.posix_acl_access";
1619 break;
1620 case SMB_ACL_TYPE_DEFAULT:
1621 key = "system.posix_acl_default";
1622 break;
1623 default:
1624 errno = EINVAL;
1625 return NULL;
1626 }
1627
1628 buf = alloca(size);
1629 if (!buf) {
1630 return NULL;
1631 }
1632
1633 ret = glfs_getxattr(handle->data, path_p, key, buf, size);
1634 if (ret == -1 && errno == ERANGE) {
1635 ret = glfs_getxattr(handle->data, path_p, key, 0, 0);
1636 if (ret > 0) {
1637 buf = alloca(ret);
1638 if (!buf) {
1639 return NULL;
1640 }
1641 ret = glfs_getxattr(handle->data, path_p, key, buf, ret);
1642 }
1643 }
1644
1645 /* retrieving the ACL from the xattr has finally failed, do a
1646 * mode-to-acl mapping */
1647
1648 if (ret == -1 && errno == ENODATA) {
1649 ret = glfs_stat(handle->data, path_p, &st);
1650 if (ret == 0) {
1651 result = mode_to_smb_acls(&st, mem_ctx);
1652 return result;
1653 }
1654 }
1655
1656 if (ret <= 0) {
1657 return NULL;
1658 }
1659
1660 result = gluster_to_smb_acl(buf, ret, mem_ctx);
1661
1662 return result;
1663 }
1664
1665 static SMB_ACL_T vfs_gluster_sys_acl_get_fd(struct vfs_handle_struct *handle,
1666 struct files_struct *fsp,
1667 TALLOC_CTX *mem_ctx)
1668 {
1669 struct smb_acl_t *result;
1670 struct stat st;
1671 ssize_t ret, size = GLUSTER_ACL_SIZE(20);
1672 char *buf;
1673 glfs_fd_t *glfd;
1674
1675 glfd = *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
1676
1677 buf = alloca(size);
1678 if (!buf) {
1679 return NULL;
1680 }
1681
1682 ret = glfs_fgetxattr(glfd, "system.posix_acl_access", buf, size);
1683 if (ret == -1 && errno == ERANGE) {
1684 ret = glfs_fgetxattr(glfd, "system.posix_acl_access", 0, 0);
1685 if (ret > 0) {
1686 buf = alloca(ret);
1687 if (!buf) {
1688 return NULL;
1689 }
1690 ret = glfs_fgetxattr(glfd, "system.posix_acl_access",
1691 buf, ret);
1692 }
1693 }
1694
1695 /* retrieving the ACL from the xattr has finally failed, do a
1696 * mode-to-acl mapping */
1697
1698 if (ret == -1 && errno == ENODATA) {
1699 ret = glfs_fstat(glfd, &st);
1700 if (ret == 0) {
1701 result = mode_to_smb_acls(&st, mem_ctx);
1702 return result;
1703 }
1704 }
1705
1706 if (ret <= 0) {
1707 return NULL;
1708 }
1709
1710 result = gluster_to_smb_acl(buf, ret, mem_ctx);
1711
1712 return result;
1713 }
1714
1715 static int vfs_gluster_sys_acl_set_file(struct vfs_handle_struct *handle,
1716 const char *name,
1717 SMB_ACL_TYPE_T acltype,
1718 SMB_ACL_T theacl)
1719 {
1720 int ret;
1721 const char *key;
1722 char *buf;
1723 ssize_t size;
1724
1725 switch (acltype) {
1726 case SMB_ACL_TYPE_ACCESS:
1727 key = "system.posix_acl_access";
1728 break;
1729 case SMB_ACL_TYPE_DEFAULT:
1730 key = "system.posix_acl_default";
1731 break;
1732 default:
1733 errno = EINVAL;
1734 return -1;
1735 }
1736
1737 size = smb_to_gluster_acl(theacl, 0, 0);
1738 buf = alloca(size);
1739
1740 size = smb_to_gluster_acl(theacl, buf, size);
1741 if (size == -1) {
1742 return -1;
1743 }
1744
1745 ret = glfs_setxattr(handle->data, name, key, buf, size, 0);
1746
1747 return ret;
1748 }
1749
1750 static int vfs_gluster_sys_acl_set_fd(struct vfs_handle_struct *handle,
1751 struct files_struct *fsp,
1752 SMB_ACL_T theacl)
1753 {
1754 int ret;
1755 char *buf;
1756 ssize_t size;
1757
1758 size = smb_to_gluster_acl(theacl, 0, 0);
1759 buf = alloca(size);
1760
1761 size = smb_to_gluster_acl(theacl, buf, size);
1762 if (size == -1) {
1763 return -1;
1764 }
1765
1766 ret = glfs_fsetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp),
1767 "system.posix_acl_access", buf, size, 0);
1768 return ret;
1769 }
1770
1771 static int vfs_gluster_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
1772 const char *path)
1773 {
1774 return glfs_removexattr(handle->data, path, "system.posix_acl_default");
1775 }
1776
1777 static struct vfs_fn_pointers glusterfs_fns = {
1778
1779 /* Disk Operations */
1780
1781 .connect_fn = vfs_gluster_connect,
1782 .disconnect_fn = vfs_gluster_disconnect,
1783 .disk_free_fn = vfs_gluster_disk_free,
1784 .get_quota_fn = vfs_gluster_get_quota,
1785 .set_quota_fn = vfs_gluster_set_quota,
1786 .statvfs_fn = vfs_gluster_statvfs,
1787 .fs_capabilities_fn = vfs_gluster_fs_capabilities,
1788
1789 .get_dfs_referrals_fn = NULL,
1790
1791 /* Directory Operations */
1792
1793 .opendir_fn = vfs_gluster_opendir,
1794 .fdopendir_fn = vfs_gluster_fdopendir,
1795 .readdir_fn = vfs_gluster_readdir,
1796 .seekdir_fn = vfs_gluster_seekdir,
1797 .telldir_fn = vfs_gluster_telldir,
1798 .rewind_dir_fn = vfs_gluster_rewinddir,
1799 .mkdir_fn = vfs_gluster_mkdir,
1800 .rmdir_fn = vfs_gluster_rmdir,
1801 .closedir_fn = vfs_gluster_closedir,
1802 .init_search_op_fn = vfs_gluster_init_search_op,
1803
1804 /* File Operations */
1805
1806 .open_fn = vfs_gluster_open,
1807 .create_file_fn = NULL,
1808 .close_fn = vfs_gluster_close,
1809 .read_fn = vfs_gluster_read,
1810 .pread_fn = vfs_gluster_pread,
1811 .pread_send_fn = vfs_gluster_pread_send,
1812 .pread_recv_fn = vfs_gluster_recv,
1813 .write_fn = vfs_gluster_write,
1814 .pwrite_fn = vfs_gluster_pwrite,
1815 .pwrite_send_fn = vfs_gluster_pwrite_send,
1816 .pwrite_recv_fn = vfs_gluster_recv,
1817 .lseek_fn = vfs_gluster_lseek,
1818 .sendfile_fn = vfs_gluster_sendfile,
1819 .recvfile_fn = vfs_gluster_recvfile,
1820 .rename_fn = vfs_gluster_rename,
1821 .fsync_fn = vfs_gluster_fsync,
1822 .fsync_send_fn = vfs_gluster_fsync_send,
1823 .fsync_recv_fn = vfs_gluster_fsync_recv,
1824
1825 .stat_fn = vfs_gluster_stat,
1826 .fstat_fn = vfs_gluster_fstat,
1827 .lstat_fn = vfs_gluster_lstat,
1828 .get_alloc_size_fn = vfs_gluster_get_alloc_size,
1829 .unlink_fn = vfs_gluster_unlink,
1830
1831 .chmod_fn = vfs_gluster_chmod,
1832 .fchmod_fn = vfs_gluster_fchmod,
1833 .chown_fn = vfs_gluster_chown,
1834 .fchown_fn = vfs_gluster_fchown,
1835 .lchown_fn = vfs_gluster_lchown,
1836 .chdir_fn = vfs_gluster_chdir,
1837 .getwd_fn = vfs_gluster_getwd,
1838 .ntimes_fn = vfs_gluster_ntimes,
1839 .ftruncate_fn = vfs_gluster_ftruncate,
1840 .fallocate_fn = vfs_gluster_fallocate,
1841 .lock_fn = vfs_gluster_lock,
1842 .kernel_flock_fn = vfs_gluster_kernel_flock,
1843 .linux_setlease_fn = vfs_gluster_linux_setlease,
1844 .getlock_fn = vfs_gluster_getlock,
1845 .symlink_fn = vfs_gluster_symlink,
1846 .readlink_fn = vfs_gluster_readlink,
1847 .link_fn = vfs_gluster_link,
1848 .mknod_fn = vfs_gluster_mknod,
1849 .realpath_fn = vfs_gluster_realpath,
1850 .chflags_fn = vfs_gluster_chflags,
1851 .file_id_create_fn = NULL,
1852 .copy_chunk_send_fn = NULL,
1853 .copy_chunk_recv_fn = NULL,
1854 .streaminfo_fn = NULL,
1855 .get_real_filename_fn = vfs_gluster_get_real_filename,
1856 .connectpath_fn = vfs_gluster_connectpath,
1857
1858 .brl_lock_windows_fn = NULL,
1859 .brl_unlock_windows_fn = NULL,
1860 .brl_cancel_windows_fn = NULL,
1861 .strict_lock_fn = NULL,
1862 .strict_unlock_fn = NULL,
1863 .translate_name_fn = NULL,
1864 .fsctl_fn = NULL,
1865
1866 /* NT ACL Operations */
1867 .fget_nt_acl_fn = NULL,
1868 .get_nt_acl_fn = NULL,
1869 .fset_nt_acl_fn = NULL,
1870 .audit_file_fn = NULL,
1871
1872 /* Posix ACL Operations */
1873 .chmod_acl_fn = NULL, /* passthrough to default */
1874 .fchmod_acl_fn = NULL, /* passthrough to default */
1875 .sys_acl_get_file_fn = vfs_gluster_sys_acl_get_file,
1876 .sys_acl_get_fd_fn = vfs_gluster_sys_acl_get_fd,
1877 .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
1878 .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
1879 .sys_acl_set_file_fn = vfs_gluster_sys_acl_set_file,
1880 .sys_acl_set_fd_fn = vfs_gluster_sys_acl_set_fd,
1881 .sys_acl_delete_def_file_fn = vfs_gluster_sys_acl_delete_def_file,
1882
1883 /* EA Operations */
1884 .getxattr_fn = vfs_gluster_getxattr,
1885 .fgetxattr_fn = vfs_gluster_fgetxattr,
1886 .listxattr_fn = vfs_gluster_listxattr,
1887 .flistxattr_fn = vfs_gluster_flistxattr,
1888 .removexattr_fn = vfs_gluster_removexattr,
1889 .fremovexattr_fn = vfs_gluster_fremovexattr,
1890 .setxattr_fn = vfs_gluster_setxattr,
1891 .fsetxattr_fn = vfs_gluster_fsetxattr,
1892
1893 /* AIO Operations */
1894 .aio_force_fn = vfs_gluster_aio_force,
1895
1896 /* Offline Operations */
1897 .is_offline_fn = vfs_gluster_is_offline,
1898 .set_offline_fn = vfs_gluster_set_offline,
1899
1900 /* Durable handle Operations */
1901 .durable_cookie_fn = NULL,
1902 .durable_disconnect_fn = NULL,
1903 .durable_reconnect_fn = NULL,
1904 };
1905
1906 NTSTATUS vfs_glusterfs_init(void);
1907 NTSTATUS vfs_glusterfs_init(void)
1908 {
1909 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1910 "glusterfs", &glusterfs_fns);
1911 }
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