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nfs4acls: Use talloc_realloc()
[Samba.git] / source3 / modules / vfs_glusterfs.c
bloba66887dbae3d68d5144253e9ea8b0861e26185e1
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/sys_rw.h"
47
48 #define DEFAULT_VOLFILE_SERVER "localhost"
49
50 static int read_fd = -1;
51 static int write_fd = -1;
52 static struct tevent_fd *aio_read_event = NULL;
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 }
156 }
157 }
158
159 /* Disk Operations */
160
161 static int vfs_gluster_connect(struct vfs_handle_struct *handle,
162 const char *service,
163 const char *user)
164 {
165 const char *volfile_server;
166 const char *volume;
167 char *logfile;
168 int loglevel;
169 glfs_t *fs = NULL;
170 TALLOC_CTX *tmp_ctx;
171 int ret = 0;
172
173 tmp_ctx = talloc_new(NULL);
174 if (tmp_ctx == NULL) {
175 ret = -1;
176 goto done;
177 }
178 logfile = lp_parm_talloc_string(tmp_ctx, SNUM(handle->conn), "glusterfs",
179 "logfile", NULL);
180
181 loglevel = lp_parm_int(SNUM(handle->conn), "glusterfs", "loglevel", -1);
182
183 volfile_server = lp_parm_const_string(SNUM(handle->conn), "glusterfs",
184 "volfile_server", NULL);
185 if (volfile_server == NULL) {
186 volfile_server = DEFAULT_VOLFILE_SERVER;
187 }
188
189 volume = lp_parm_const_string(SNUM(handle->conn), "glusterfs", "volume",
190 NULL);
191 if (volume == NULL) {
192 volume = service;
193 }
194
195 fs = glfs_find_preopened(volume, handle->conn->connectpath);
196 if (fs) {
197 goto done;
198 }
199
200 fs = glfs_new(volume);
201 if (fs == NULL) {
202 ret = -1;
203 goto done;
204 }
205
206 ret = glfs_set_volfile_server(fs, "tcp", volfile_server, 0);
207 if (ret < 0) {
208 DEBUG(0, ("Failed to set volfile_server %s\n", volfile_server));
209 goto done;
210 }
211
212 ret = glfs_set_xlator_option(fs, "*-md-cache", "cache-posix-acl",
213 "true");
214 if (ret < 0) {
215 DEBUG(0, ("%s: Failed to set xlator options\n", volume));
216 goto done;
217 }
218
219
220 ret = glfs_set_xlator_option(fs, "*-snapview-client",
221 "snapdir-entry-path",
222 handle->conn->connectpath);
223 if (ret < 0) {
224 DEBUG(0, ("%s: Failed to set xlator option:"
225 " snapdir-entry-path\n", volume));
226 glfs_fini(fs);
227 return -1;
228 }
229
230 ret = glfs_set_logging(fs, logfile, loglevel);
231 if (ret < 0) {
232 DEBUG(0, ("%s: Failed to set logfile %s loglevel %d\n",
233 volume, logfile, loglevel));
234 goto done;
235 }
236
237 ret = glfs_init(fs);
238 if (ret < 0) {
239 DEBUG(0, ("%s: Failed to initialize volume (%s)\n",
240 volume, strerror(errno)));
241 goto done;
242 }
243
244 ret = glfs_set_preopened(volume, handle->conn->connectpath, fs);
245 if (ret < 0) {
246 DEBUG(0, ("%s: Failed to register volume (%s)\n",
247 volume, strerror(errno)));
248 goto done;
249 }
250 done:
251 talloc_free(tmp_ctx);
252 if (ret < 0) {
253 if (fs)
254 glfs_fini(fs);
255 return -1;
256 } else {
257 DEBUG(0, ("%s: Initialized volume from server %s\n",
258 volume, volfile_server));
259 handle->data = fs;
260 return 0;
261 }
262 }
263
264 static void vfs_gluster_disconnect(struct vfs_handle_struct *handle)
265 {
266 glfs_t *fs = NULL;
267
268 fs = handle->data;
269
270 glfs_clear_preopened(fs);
271 }
272
273 static uint64_t vfs_gluster_disk_free(struct vfs_handle_struct *handle,
274 const char *path, uint64_t *bsize_p,
275 uint64_t *dfree_p, uint64_t *dsize_p)
276 {
277 struct statvfs statvfs = { 0, };
278 int ret;
279
280 ret = glfs_statvfs(handle->data, path, &statvfs);
281 if (ret < 0) {
282 return -1;
283 }
284
285 if (bsize_p != NULL) {
286 *bsize_p = (uint64_t)statvfs.f_bsize; /* Block size */
287 }
288 if (dfree_p != NULL) {
289 *dfree_p = (uint64_t)statvfs.f_bavail; /* Available Block units */
290 }
291 if (dsize_p != NULL) {
292 *dsize_p = (uint64_t)statvfs.f_blocks; /* Total Block units */
293 }
294
295 return (uint64_t)statvfs.f_bavail;
296 }
297
298 static int vfs_gluster_get_quota(struct vfs_handle_struct *handle,
299 enum SMB_QUOTA_TYPE qtype, unid_t id,
300 SMB_DISK_QUOTA *qt)
301 {
302 errno = ENOSYS;
303 return -1;
304 }
305
306 static int
307 vfs_gluster_set_quota(struct vfs_handle_struct *handle,
308 enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
309 {
310 errno = ENOSYS;
311 return -1;
312 }
313
314 static int vfs_gluster_statvfs(struct vfs_handle_struct *handle,
315 const char *path,
316 struct vfs_statvfs_struct *vfs_statvfs)
317 {
318 struct statvfs statvfs = { 0, };
319 int ret;
320
321 ret = glfs_statvfs(handle->data, path, &statvfs);
322 if (ret < 0) {
323 DEBUG(0, ("glfs_statvfs(%s) failed: %s\n",
324 path, strerror(errno)));
325 return -1;
326 }
327
328 ZERO_STRUCTP(vfs_statvfs);
329
330 vfs_statvfs->OptimalTransferSize = statvfs.f_frsize;
331 vfs_statvfs->BlockSize = statvfs.f_bsize;
332 vfs_statvfs->TotalBlocks = statvfs.f_blocks;
333 vfs_statvfs->BlocksAvail = statvfs.f_bfree;
334 vfs_statvfs->UserBlocksAvail = statvfs.f_bavail;
335 vfs_statvfs->TotalFileNodes = statvfs.f_files;
336 vfs_statvfs->FreeFileNodes = statvfs.f_ffree;
337 vfs_statvfs->FsIdentifier = statvfs.f_fsid;
338 vfs_statvfs->FsCapabilities =
339 FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
340
341 return ret;
342 }
343
344 static uint32_t vfs_gluster_fs_capabilities(struct vfs_handle_struct *handle,
345 enum timestamp_set_resolution *p_ts_res)
346 {
347 uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
348
349 #ifdef STAT_HAVE_NSEC
350 *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
351 #endif
352
353 return caps;
354 }
355
356 static DIR *vfs_gluster_opendir(struct vfs_handle_struct *handle,
357 const char *path, const char *mask,
358 uint32_t attributes)
359 {
360 glfs_fd_t *fd;
361
362 fd = glfs_opendir(handle->data, path);
363 if (fd == NULL) {
364 DEBUG(0, ("glfs_opendir(%s) failed: %s\n",
365 path, strerror(errno)));
366 }
367
368 return (DIR *) fd;
369 }
370
371 static DIR *vfs_gluster_fdopendir(struct vfs_handle_struct *handle,
372 files_struct *fsp, const char *mask,
373 uint32_t attributes)
374 {
375 return (DIR *) *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
376 }
377
378 static int vfs_gluster_closedir(struct vfs_handle_struct *handle, DIR *dirp)
379 {
380 return glfs_closedir((void *)dirp);
381 }
382
383 static struct dirent *vfs_gluster_readdir(struct vfs_handle_struct *handle,
384 DIR *dirp, SMB_STRUCT_STAT *sbuf)
385 {
386 static char direntbuf[512];
387 int ret;
388 struct stat stat;
389 struct dirent *dirent = 0;
390
391 if (sbuf != NULL) {
392 ret = glfs_readdirplus_r((void *)dirp, &stat, (void *)direntbuf,
393 &dirent);
394 } else {
395 ret = glfs_readdir_r((void *)dirp, (void *)direntbuf, &dirent);
396 }
397
398 if ((ret < 0) || (dirent == NULL)) {
399 return NULL;
400 }
401
402 if (sbuf != NULL) {
403 smb_stat_ex_from_stat(sbuf, &stat);
404 }
405
406 return dirent;
407 }
408
409 static long vfs_gluster_telldir(struct vfs_handle_struct *handle, DIR *dirp)
410 {
411 return glfs_telldir((void *)dirp);
412 }
413
414 static void vfs_gluster_seekdir(struct vfs_handle_struct *handle, DIR *dirp,
415 long offset)
416 {
417 glfs_seekdir((void *)dirp, offset);
418 }
419
420 static void vfs_gluster_rewinddir(struct vfs_handle_struct *handle, DIR *dirp)
421 {
422 glfs_seekdir((void *)dirp, 0);
423 }
424
425 static void vfs_gluster_init_search_op(struct vfs_handle_struct *handle,
426 DIR *dirp)
427 {
428 return;
429 }
430
431 static int vfs_gluster_mkdir(struct vfs_handle_struct *handle, const char *path,
432 mode_t mode)
433 {
434 return glfs_mkdir(handle->data, path, mode);
435 }
436
437 static int vfs_gluster_rmdir(struct vfs_handle_struct *handle, const char *path)
438 {
439 return glfs_rmdir(handle->data, path);
440 }
441
442 static int vfs_gluster_open(struct vfs_handle_struct *handle,
443 struct smb_filename *smb_fname, files_struct *fsp,
444 int flags, mode_t mode)
445 {
446 glfs_fd_t *glfd;
447 glfs_fd_t **p_tmp;
448
449 if (flags & O_DIRECTORY) {
450 glfd = glfs_opendir(handle->data, smb_fname->base_name);
451 } else if (flags & O_CREAT) {
452 glfd = glfs_creat(handle->data, smb_fname->base_name, flags,
453 mode);
454 } else {
455 glfd = glfs_open(handle->data, smb_fname->base_name, flags);
456 }
457
458 if (glfd == NULL) {
459 return -1;
460 }
461 p_tmp = (glfs_fd_t **)VFS_ADD_FSP_EXTENSION(handle, fsp,
462 glfs_fd_t *, NULL);
463 *p_tmp = glfd;
464 /* An arbitrary value for error reporting, so you know its us. */
465 return 13371337;
466 }
467
468 static int vfs_gluster_close(struct vfs_handle_struct *handle,
469 files_struct *fsp)
470 {
471 glfs_fd_t *glfd;
472 glfd = *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
473 VFS_REMOVE_FSP_EXTENSION(handle, fsp);
474 return glfs_close(glfd);
475 }
476
477 static ssize_t vfs_gluster_read(struct vfs_handle_struct *handle,
478 files_struct *fsp, void *data, size_t n)
479 {
480 return glfs_read(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, 0);
481 }
482
483 static ssize_t vfs_gluster_pread(struct vfs_handle_struct *handle,
484 files_struct *fsp, void *data, size_t n,
485 off_t offset)
486 {
487 return glfs_pread(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, offset, 0);
488 }
489
490 struct glusterfs_aio_state {
491 ssize_t ret;
492 int err;
493 };
494
495 /*
496 * This function is the callback that will be called on glusterfs
497 * threads once the async IO submitted is complete. To notify
498 * Samba of the completion we use a pipe based queue.
499 */
500 static void aio_glusterfs_done(glfs_fd_t *fd, ssize_t ret, void *data)
501 {
502 struct tevent_req *req = NULL;
503 struct glusterfs_aio_state *state = NULL;
504 int sts = 0;
505
506 req = talloc_get_type_abort(data, struct tevent_req);
507 state = tevent_req_data(req, struct glusterfs_aio_state);
508
509 if (ret < 0) {
510 state->ret = -1;
511 state->err = errno;
512 } else {
513 state->ret = ret;
514 state->err = 0;
515 }
516
517 /*
518 * Write the pointer to each req that needs to be completed
519 * by calling tevent_req_done(). tevent_req_done() cannot
520 * be called here, as it is not designed to be executed
521 * in the multithread environment, tevent_req_done() must be
522 * executed from the smbd main thread.
523 *
524 * write(2) on pipes with sizes under _POSIX_PIPE_BUF
525 * in size is atomic, without this, the use op pipes in this
526 * code would not work.
527 *
528 * sys_write is a thin enough wrapper around write(2)
529 * that we can trust it here.
530 */
531
532 sts = sys_write(write_fd, &req, sizeof(struct tevent_req *));
533 if (sts < 0) {
534 DEBUG(0,("\nWrite to pipe failed (%s)", strerror(errno)));
535 }
536
537 return;
538 }
539
540 /*
541 * Read each req off the pipe and process it.
542 */
543 static void aio_tevent_fd_done(struct tevent_context *event_ctx,
544 struct tevent_fd *fde,
545 uint16_t flags, void *data)
546 {
547 struct tevent_req *req = NULL;
548 int sts = 0;
549
550 /*
551 * read(2) on pipes is atomic if the needed data is available
552 * in the pipe, per SUS and POSIX. Because we always write
553 * to the pipe in sizeof(struct tevent_req *) chunks, we can
554 * always read in those chunks, atomically.
555 *
556 * sys_read is a thin enough wrapper around read(2) that we
557 * can trust it here.
558 */
559
560 sts = sys_read(read_fd, &req, sizeof(struct tevent_req *));
561 if (sts < 0) {
562 DEBUG(0,("\nRead from pipe failed (%s)", strerror(errno)));
563 }
564
565 if (req) {
566 tevent_req_done(req);
567 }
568 return;
569 }
570
571 static bool init_gluster_aio(struct vfs_handle_struct *handle)
572 {
573 int fds[2];
574 int ret = -1;
575
576 if (read_fd != -1) {
577 /*
578 * Already initialized.
579 */
580 return true;
581 }
582
583 ret = pipe(fds);
584 if (ret == -1) {
585 goto fail;
586 }
587
588 read_fd = fds[0];
589 write_fd = fds[1];
590
591 aio_read_event = tevent_add_fd(handle->conn->sconn->ev_ctx,
592 NULL,
593 read_fd,
594 TEVENT_FD_READ,
595 aio_tevent_fd_done,
596 NULL);
597 if (aio_read_event == NULL) {
598 goto fail;
599 }
600
601 return true;
602 fail:
603 TALLOC_FREE(aio_read_event);
604 if (read_fd != -1) {
605 close(read_fd);
606 close(write_fd);
607 read_fd = -1;
608 write_fd = -1;
609 }
610 return false;
611 }
612
613 static struct tevent_req *vfs_gluster_pread_send(struct vfs_handle_struct
614 *handle, TALLOC_CTX *mem_ctx,
615 struct tevent_context *ev,
616 files_struct *fsp, void *data,
617 size_t n, off_t offset)
618 {
619 struct tevent_req *req = NULL;
620 struct glusterfs_aio_state *state = NULL;
621 int ret = 0;
622
623 req = tevent_req_create(mem_ctx, &state, struct glusterfs_aio_state);
624 if (req == NULL) {
625 return NULL;
626 }
627
628 if (!init_gluster_aio(handle)) {
629 tevent_req_error(req, EIO);
630 return tevent_req_post(req, ev);
631 }
632 ret = glfs_pread_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
633 fsp), data, n, offset, 0, aio_glusterfs_done,
634 req);
635 if (ret < 0) {
636 tevent_req_error(req, -ret);
637 return tevent_req_post(req, ev);
638 }
639
640 return req;
641 }
642
643 static ssize_t vfs_gluster_write(struct vfs_handle_struct *handle,
644 files_struct *fsp, const void *data, size_t n)
645 {
646 return glfs_write(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, 0);
647 }
648
649 static ssize_t vfs_gluster_pwrite(struct vfs_handle_struct *handle,
650 files_struct *fsp, const void *data,
651 size_t n, off_t offset)
652 {
653 return glfs_pwrite(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, offset, 0);
654 }
655
656 static struct tevent_req *vfs_gluster_pwrite_send(struct vfs_handle_struct
657 *handle, TALLOC_CTX *mem_ctx,
658 struct tevent_context *ev,
659 files_struct *fsp,
660 const void *data, size_t n,
661 off_t offset)
662 {
663 struct tevent_req *req = NULL;
664 struct glusterfs_aio_state *state = NULL;
665 int ret = 0;
666
667 req = tevent_req_create(mem_ctx, &state, struct glusterfs_aio_state);
668 if (req == NULL) {
669 return NULL;
670 }
671 if (!init_gluster_aio(handle)) {
672 tevent_req_error(req, EIO);
673 return tevent_req_post(req, ev);
674 }
675 ret = glfs_pwrite_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
676 fsp), data, n, offset, 0, aio_glusterfs_done,
677 req);
678 if (ret < 0) {
679 tevent_req_error(req, -ret);
680 return tevent_req_post(req, ev);
681 }
682 return req;
683 }
684
685 static ssize_t vfs_gluster_recv(struct tevent_req *req, int *err)
686 {
687 struct glusterfs_aio_state *state = NULL;
688
689 state = tevent_req_data(req, struct glusterfs_aio_state);
690 if (state == NULL) {
691 return -1;
692 }
693
694 if (tevent_req_is_unix_error(req, err)) {
695 return -1;
696 }
697 if (state->ret == -1) {
698 *err = state->err;
699 }
700 return state->ret;
701 }
702
703 static off_t vfs_gluster_lseek(struct vfs_handle_struct *handle,
704 files_struct *fsp, off_t offset, int whence)
705 {
706 return glfs_lseek(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), offset, whence);
707 }
708
709 static ssize_t vfs_gluster_sendfile(struct vfs_handle_struct *handle, int tofd,
710 files_struct *fromfsp,
711 const DATA_BLOB *hdr,
712 off_t offset, size_t n)
713 {
714 errno = ENOTSUP;
715 return -1;
716 }
717
718 static ssize_t vfs_gluster_recvfile(struct vfs_handle_struct *handle,
719 int fromfd, files_struct *tofsp,
720 off_t offset, size_t n)
721 {
722 errno = ENOTSUP;
723 return -1;
724 }
725
726 static int vfs_gluster_rename(struct vfs_handle_struct *handle,
727 const struct smb_filename *smb_fname_src,
728 const struct smb_filename *smb_fname_dst)
729 {
730 return glfs_rename(handle->data, smb_fname_src->base_name,
731 smb_fname_dst->base_name);
732 }
733
734 static int vfs_gluster_fsync(struct vfs_handle_struct *handle,
735 files_struct *fsp)
736 {
737 return glfs_fsync(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp));
738 }
739
740 static struct tevent_req *vfs_gluster_fsync_send(struct vfs_handle_struct
741 *handle, TALLOC_CTX *mem_ctx,
742 struct tevent_context *ev,
743 files_struct *fsp)
744 {
745 struct tevent_req *req = NULL;
746 struct glusterfs_aio_state *state = NULL;
747 int ret = 0;
748
749 req = tevent_req_create(mem_ctx, &state, struct glusterfs_aio_state);
750 if (req == NULL) {
751 return NULL;
752 }
753 if (!init_gluster_aio(handle)) {
754 tevent_req_error(req, EIO);
755 return tevent_req_post(req, ev);
756 }
757 ret = glfs_fsync_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
758 fsp), aio_glusterfs_done, req);
759 if (ret < 0) {
760 tevent_req_error(req, -ret);
761 return tevent_req_post(req, ev);
762 }
763 return req;
764 }
765
766 static int vfs_gluster_fsync_recv(struct tevent_req *req, int *err)
767 {
768 /*
769 * Use implicit conversion ssize_t->int
770 */
771 return vfs_gluster_recv(req, err);
772 }
773
774 static int vfs_gluster_stat(struct vfs_handle_struct *handle,
775 struct smb_filename *smb_fname)
776 {
777 struct stat st;
778 int ret;
779
780 ret = glfs_stat(handle->data, smb_fname->base_name, &st);
781 if (ret == 0) {
782 smb_stat_ex_from_stat(&smb_fname->st, &st);
783 }
784 if (ret < 0 && errno != ENOENT) {
785 DEBUG(0, ("glfs_stat(%s) failed: %s\n",
786 smb_fname->base_name, strerror(errno)));
787 }
788 return ret;
789 }
790
791 static int vfs_gluster_fstat(struct vfs_handle_struct *handle,
792 files_struct *fsp, SMB_STRUCT_STAT *sbuf)
793 {
794 struct stat st;
795 int ret;
796
797 ret = glfs_fstat(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), &st);
798 if (ret == 0) {
799 smb_stat_ex_from_stat(sbuf, &st);
800 }
801 if (ret < 0) {
802 DEBUG(0, ("glfs_fstat(%d) failed: %s\n",
803 fsp->fh->fd, strerror(errno)));
804 }
805 return ret;
806 }
807
808 static int vfs_gluster_lstat(struct vfs_handle_struct *handle,
809 struct smb_filename *smb_fname)
810 {
811 struct stat st;
812 int ret;
813
814 ret = glfs_lstat(handle->data, smb_fname->base_name, &st);
815 if (ret == 0) {
816 smb_stat_ex_from_stat(&smb_fname->st, &st);
817 }
818 if (ret < 0 && errno != ENOENT) {
819 DEBUG(0, ("glfs_lstat(%s) failed: %s\n",
820 smb_fname->base_name, strerror(errno)));
821 }
822 return ret;
823 }
824
825 static uint64_t vfs_gluster_get_alloc_size(struct vfs_handle_struct *handle,
826 files_struct *fsp,
827 const SMB_STRUCT_STAT *sbuf)
828 {
829 return sbuf->st_ex_blocks * 512;
830 }
831
832 static int vfs_gluster_unlink(struct vfs_handle_struct *handle,
833 const struct smb_filename *smb_fname)
834 {
835 return glfs_unlink(handle->data, smb_fname->base_name);
836 }
837
838 static int vfs_gluster_chmod(struct vfs_handle_struct *handle,
839 const char *path, mode_t mode)
840 {
841 return glfs_chmod(handle->data, path, mode);
842 }
843
844 static int vfs_gluster_fchmod(struct vfs_handle_struct *handle,
845 files_struct *fsp, mode_t mode)
846 {
847 return glfs_fchmod(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), mode);
848 }
849
850 static int vfs_gluster_chown(struct vfs_handle_struct *handle,
851 const char *path, uid_t uid, gid_t gid)
852 {
853 return glfs_chown(handle->data, path, uid, gid);
854 }
855
856 static int vfs_gluster_fchown(struct vfs_handle_struct *handle,
857 files_struct *fsp, uid_t uid, gid_t gid)
858 {
859 return glfs_fchown(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), uid, gid);
860 }
861
862 static int vfs_gluster_lchown(struct vfs_handle_struct *handle,
863 const char *path, uid_t uid, gid_t gid)
864 {
865 return glfs_lchown(handle->data, path, uid, gid);
866 }
867
868 static int vfs_gluster_chdir(struct vfs_handle_struct *handle, const char *path)
869 {
870 return glfs_chdir(handle->data, path);
871 }
872
873 static char *vfs_gluster_getwd(struct vfs_handle_struct *handle)
874 {
875 char *cwd;
876 char *ret;
877
878 cwd = SMB_CALLOC_ARRAY(char, PATH_MAX);
879 if (cwd == NULL) {
880 return NULL;
881 }
882
883 ret = glfs_getcwd(handle->data, cwd, PATH_MAX - 1);
884 if (ret == 0) {
885 free(cwd);
886 }
887 return ret;
888 }
889
890 static int vfs_gluster_ntimes(struct vfs_handle_struct *handle,
891 const struct smb_filename *smb_fname,
892 struct smb_file_time *ft)
893 {
894 struct timespec times[2];
895
896 if (null_timespec(ft->atime)) {
897 times[0].tv_sec = smb_fname->st.st_ex_atime.tv_sec;
898 times[0].tv_nsec = smb_fname->st.st_ex_atime.tv_nsec;
899 } else {
900 times[0].tv_sec = ft->atime.tv_sec;
901 times[0].tv_nsec = ft->atime.tv_nsec;
902 }
903
904 if (null_timespec(ft->mtime)) {
905 times[1].tv_sec = smb_fname->st.st_ex_mtime.tv_sec;
906 times[1].tv_nsec = smb_fname->st.st_ex_mtime.tv_nsec;
907 } else {
908 times[1].tv_sec = ft->mtime.tv_sec;
909 times[1].tv_nsec = ft->mtime.tv_nsec;
910 }
911
912 if ((timespec_compare(&times[0],
913 &smb_fname->st.st_ex_atime) == 0) &&
914 (timespec_compare(&times[1],
915 &smb_fname->st.st_ex_mtime) == 0)) {
916 return 0;
917 }
918
919 return glfs_utimens(handle->data, smb_fname->base_name, times);
920 }
921
922 static int vfs_gluster_ftruncate(struct vfs_handle_struct *handle,
923 files_struct *fsp, off_t offset)
924 {
925 return glfs_ftruncate(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), offset);
926 }
927
928 static int vfs_gluster_fallocate(struct vfs_handle_struct *handle,
929 struct files_struct *fsp,
930 uint32_t mode,
931 off_t offset, off_t len)
932 {
933 /* TODO: add support using glfs_fallocate() and glfs_zerofill() */
934 errno = ENOTSUP;
935 return -1;
936 }
937
938 static char *vfs_gluster_realpath(struct vfs_handle_struct *handle,
939 const char *path)
940 {
941 return glfs_realpath(handle->data, path, 0);
942 }
943
944 static bool vfs_gluster_lock(struct vfs_handle_struct *handle,
945 files_struct *fsp, int op, off_t offset,
946 off_t count, int type)
947 {
948 struct flock flock = { 0, };
949 int ret;
950
951 flock.l_type = type;
952 flock.l_whence = SEEK_SET;
953 flock.l_start = offset;
954 flock.l_len = count;
955 flock.l_pid = 0;
956
957 ret = glfs_posix_lock(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), op, &flock);
958
959 if (op == F_GETLK) {
960 /* lock query, true if someone else has locked */
961 if ((ret != -1) &&
962 (flock.l_type != F_UNLCK) &&
963 (flock.l_pid != 0) && (flock.l_pid != getpid()))
964 return true;
965 /* not me */
966 return false;
967 }
968
969 if (ret == -1) {
970 return false;
971 }
972
973 return true;
974 }
975
976 static int vfs_gluster_kernel_flock(struct vfs_handle_struct *handle,
977 files_struct *fsp, uint32_t share_mode,
978 uint32_t access_mask)
979 {
980 errno = ENOSYS;
981 return -1;
982 }
983
984 static int vfs_gluster_linux_setlease(struct vfs_handle_struct *handle,
985 files_struct *fsp, int leasetype)
986 {
987 errno = ENOSYS;
988 return -1;
989 }
990
991 static bool vfs_gluster_getlock(struct vfs_handle_struct *handle,
992 files_struct *fsp, off_t *poffset,
993 off_t *pcount, int *ptype, pid_t *ppid)
994 {
995 struct flock flock = { 0, };
996 int ret;
997
998 flock.l_type = *ptype;
999 flock.l_whence = SEEK_SET;
1000 flock.l_start = *poffset;
1001 flock.l_len = *pcount;
1002 flock.l_pid = 0;
1003
1004 ret = glfs_posix_lock(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), F_GETLK, &flock);
1005
1006 if (ret == -1) {
1007 return false;
1008 }
1009
1010 *ptype = flock.l_type;
1011 *poffset = flock.l_start;
1012 *pcount = flock.l_len;
1013 *ppid = flock.l_pid;
1014
1015 return true;
1016 }
1017
1018 static int vfs_gluster_symlink(struct vfs_handle_struct *handle,
1019 const char *oldpath, const char *newpath)
1020 {
1021 return glfs_symlink(handle->data, oldpath, newpath);
1022 }
1023
1024 static int vfs_gluster_readlink(struct vfs_handle_struct *handle,
1025 const char *path, char *buf, size_t bufsiz)
1026 {
1027 return glfs_readlink(handle->data, path, buf, bufsiz);
1028 }
1029
1030 static int vfs_gluster_link(struct vfs_handle_struct *handle,
1031 const char *oldpath, const char *newpath)
1032 {
1033 return glfs_link(handle->data, oldpath, newpath);
1034 }
1035
1036 static int vfs_gluster_mknod(struct vfs_handle_struct *handle, const char *path,
1037 mode_t mode, SMB_DEV_T dev)
1038 {
1039 return glfs_mknod(handle->data, path, mode, dev);
1040 }
1041
1042 static int vfs_gluster_chflags(struct vfs_handle_struct *handle,
1043 const char *path, unsigned int flags)
1044 {
1045 errno = ENOSYS;
1046 return -1;
1047 }
1048
1049 static int vfs_gluster_get_real_filename(struct vfs_handle_struct *handle,
1050 const char *path, const char *name,
1051 TALLOC_CTX *mem_ctx, char **found_name)
1052 {
1053 int ret;
1054 char key_buf[NAME_MAX + 64];
1055 char val_buf[NAME_MAX + 1];
1056
1057 if (strlen(name) >= NAME_MAX) {
1058 errno = ENAMETOOLONG;
1059 return -1;
1060 }
1061
1062 snprintf(key_buf, NAME_MAX + 64,
1063 "glusterfs.get_real_filename:%s", name);
1064
1065 ret = glfs_getxattr(handle->data, path, key_buf, val_buf, NAME_MAX + 1);
1066 if (ret == -1) {
1067 if (errno == ENODATA) {
1068 errno = EOPNOTSUPP;
1069 }
1070 return -1;
1071 }
1072
1073 *found_name = talloc_strdup(mem_ctx, val_buf);
1074 if (found_name[0] == NULL) {
1075 errno = ENOMEM;
1076 return -1;
1077 }
1078 return 0;
1079 }
1080
1081 static const char *vfs_gluster_connectpath(struct vfs_handle_struct *handle,
1082 const char *filename)
1083 {
1084 return handle->conn->connectpath;
1085 }
1086
1087 /* EA Operations */
1088
1089 static ssize_t vfs_gluster_getxattr(struct vfs_handle_struct *handle,
1090 const char *path, const char *name,
1091 void *value, size_t size)
1092 {
1093 return glfs_getxattr(handle->data, path, name, value, size);
1094 }
1095
1096 static ssize_t vfs_gluster_fgetxattr(struct vfs_handle_struct *handle,
1097 files_struct *fsp, const char *name,
1098 void *value, size_t size)
1099 {
1100 return glfs_fgetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name, value, size);
1101 }
1102
1103 static ssize_t vfs_gluster_listxattr(struct vfs_handle_struct *handle,
1104 const char *path, char *list, size_t size)
1105 {
1106 return glfs_listxattr(handle->data, path, list, size);
1107 }
1108
1109 static ssize_t vfs_gluster_flistxattr(struct vfs_handle_struct *handle,
1110 files_struct *fsp, char *list,
1111 size_t size)
1112 {
1113 return glfs_flistxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), list, size);
1114 }
1115
1116 static int vfs_gluster_removexattr(struct vfs_handle_struct *handle,
1117 const char *path, const char *name)
1118 {
1119 return glfs_removexattr(handle->data, path, name);
1120 }
1121
1122 static int vfs_gluster_fremovexattr(struct vfs_handle_struct *handle,
1123 files_struct *fsp, const char *name)
1124 {
1125 return glfs_fremovexattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name);
1126 }
1127
1128 static int vfs_gluster_setxattr(struct vfs_handle_struct *handle,
1129 const char *path, const char *name,
1130 const void *value, size_t size, int flags)
1131 {
1132 return glfs_setxattr(handle->data, path, name, value, size, flags);
1133 }
1134
1135 static int vfs_gluster_fsetxattr(struct vfs_handle_struct *handle,
1136 files_struct *fsp, const char *name,
1137 const void *value, size_t size, int flags)
1138 {
1139 return glfs_fsetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name, value, size,
1140 flags);
1141 }
1142
1143 /* AIO Operations */
1144
1145 static bool vfs_gluster_aio_force(struct vfs_handle_struct *handle,
1146 files_struct *fsp)
1147 {
1148 return false;
1149 }
1150
1151 /* Offline Operations */
1152
1153 static bool vfs_gluster_is_offline(struct vfs_handle_struct *handle,
1154 const struct smb_filename *fname,
1155 SMB_STRUCT_STAT *sbuf)
1156 {
1157 return false;
1158 }
1159
1160 static int vfs_gluster_set_offline(struct vfs_handle_struct *handle,
1161 const struct smb_filename *fname)
1162 {
1163 errno = ENOTSUP;
1164 return -1;
1165 }
1166
1167 /*
1168 Gluster ACL Format:
1169
1170 Size = 4 (header) + N * 8 (entry)
1171
1172 Offset Size Field (Little Endian)
1173 -------------------------------------
1174 0-3 4-byte Version
1175
1176 4-5 2-byte Entry-1 tag
1177 6-7 2-byte Entry-1 perm
1178 8-11 4-byte Entry-1 id
1179
1180 12-13 2-byte Entry-2 tag
1181 14-15 2-byte Entry-2 perm
1182 16-19 4-byte Entry-2 id
1183
1184 ...
1185
1186 */
1187
1188 /* header version */
1189 #define GLUSTER_ACL_VERSION 2
1190
1191 /* perm bits */
1192 #define GLUSTER_ACL_READ 0x04
1193 #define GLUSTER_ACL_WRITE 0x02
1194 #define GLUSTER_ACL_EXECUTE 0x01
1195
1196 /* tag values */
1197 #define GLUSTER_ACL_UNDEFINED_TAG 0x00
1198 #define GLUSTER_ACL_USER_OBJ 0x01
1199 #define GLUSTER_ACL_USER 0x02
1200 #define GLUSTER_ACL_GROUP_OBJ 0x04
1201 #define GLUSTER_ACL_GROUP 0x08
1202 #define GLUSTER_ACL_MASK 0x10
1203 #define GLUSTER_ACL_OTHER 0x20
1204
1205 #define GLUSTER_ACL_UNDEFINED_ID (-1)
1206
1207 #define GLUSTER_ACL_HEADER_SIZE 4
1208 #define GLUSTER_ACL_ENTRY_SIZE 8
1209
1210 #define GLUSTER_ACL_SIZE(n) (GLUSTER_ACL_HEADER_SIZE + (n * GLUSTER_ACL_ENTRY_SIZE))
1211
1212 static SMB_ACL_T mode_to_smb_acls(const struct stat *mode, TALLOC_CTX *mem_ctx)
1213 {
1214 struct smb_acl_t *result;
1215 int count;
1216
1217 count = 3;
1218 result = sys_acl_init(mem_ctx);
1219 if (!result) {
1220 errno = ENOMEM;
1221 return NULL;
1222 }
1223
1224 result->acl = talloc_array(result, struct smb_acl_entry, count);
1225 if (!result->acl) {
1226 errno = ENOMEM;
1227 talloc_free(result);
1228 return NULL;
1229 }
1230
1231 result->count = count;
1232
1233 result->acl[0].a_type = SMB_ACL_USER_OBJ;
1234 result->acl[0].a_perm = (mode->st_mode & S_IRWXU) >> 6;;
1235
1236 result->acl[1].a_type = SMB_ACL_GROUP_OBJ;
1237 result->acl[1].a_perm = (mode->st_mode & S_IRWXG) >> 3;;
1238
1239 result->acl[2].a_type = SMB_ACL_OTHER;
1240 result->acl[2].a_perm = mode->st_mode & S_IRWXO;;
1241
1242 return result;
1243 }
1244
1245 static SMB_ACL_T gluster_to_smb_acl(const char *buf, size_t xattr_size,
1246 TALLOC_CTX *mem_ctx)
1247 {
1248 int count;
1249 size_t size;
1250 struct smb_acl_entry *smb_ace;
1251 struct smb_acl_t *result;
1252 int i;
1253 int offset;
1254 uint16_t tag;
1255 uint16_t perm;
1256 uint32_t id;
1257
1258 size = xattr_size;
1259
1260 if (size < GLUSTER_ACL_HEADER_SIZE) {
1261 /* ACL should be at least as big as the header (4 bytes) */
1262 errno = EINVAL;
1263 return NULL;
1264 }
1265
1266 size -= GLUSTER_ACL_HEADER_SIZE; /* size of header = 4 bytes */
1267
1268 if (size % GLUSTER_ACL_ENTRY_SIZE) {
1269 /* Size of entries must strictly be a multiple of
1270 size of an ACE (8 bytes)
1271 */
1272 errno = EINVAL;
1273 return NULL;
1274 }
1275
1276 count = size / GLUSTER_ACL_ENTRY_SIZE;
1277
1278 /* Version is the first 4 bytes of the ACL */
1279 if (IVAL(buf, 0) != GLUSTER_ACL_VERSION) {
1280 DEBUG(0, ("Unknown gluster ACL version: %d\n",
1281 IVAL(buf, 0)));
1282 return NULL;
1283 }
1284 offset = GLUSTER_ACL_HEADER_SIZE;
1285
1286 result = sys_acl_init(mem_ctx);
1287 if (!result) {
1288 errno = ENOMEM;
1289 return NULL;
1290 }
1291
1292 result->acl = talloc_array(result, struct smb_acl_entry, count);
1293 if (!result->acl) {
1294 errno = ENOMEM;
1295 talloc_free(result);
1296 return NULL;
1297 }
1298
1299 result->count = count;
1300
1301 smb_ace = result->acl;
1302
1303 for (i = 0; i < count; i++) {
1304 /* TAG is the first 2 bytes of an entry */
1305 tag = SVAL(buf, offset);
1306 offset += 2;
1307
1308 /* PERM is the next 2 bytes of an entry */
1309 perm = SVAL(buf, offset);
1310 offset += 2;
1311
1312 /* ID is the last 4 bytes of an entry */
1313 id = IVAL(buf, offset);
1314 offset += 4;
1315
1316 switch(tag) {
1317 case GLUSTER_ACL_USER:
1318 smb_ace->a_type = SMB_ACL_USER;
1319 break;
1320 case GLUSTER_ACL_USER_OBJ:
1321 smb_ace->a_type = SMB_ACL_USER_OBJ;
1322 break;
1323 case GLUSTER_ACL_GROUP:
1324 smb_ace->a_type = SMB_ACL_GROUP;
1325 break;
1326 case GLUSTER_ACL_GROUP_OBJ:
1327 smb_ace->a_type = SMB_ACL_GROUP_OBJ;
1328 break;
1329 case GLUSTER_ACL_OTHER:
1330 smb_ace->a_type = SMB_ACL_OTHER;
1331 break;
1332 case GLUSTER_ACL_MASK:
1333 smb_ace->a_type = SMB_ACL_MASK;
1334 break;
1335 default:
1336 DEBUG(0, ("unknown tag type %d\n", (unsigned int) tag));
1337 return NULL;
1338 }
1339
1340
1341 switch(smb_ace->a_type) {
1342 case SMB_ACL_USER:
1343 smb_ace->info.user.uid = id;
1344 break;
1345 case SMB_ACL_GROUP:
1346 smb_ace->info.group.gid = id;
1347 break;
1348 default:
1349 break;
1350 }
1351
1352 smb_ace->a_perm = 0;
1353 smb_ace->a_perm |=
1354 ((perm & GLUSTER_ACL_READ) ? SMB_ACL_READ : 0);
1355 smb_ace->a_perm |=
1356 ((perm & GLUSTER_ACL_WRITE) ? SMB_ACL_WRITE : 0);
1357 smb_ace->a_perm |=
1358 ((perm & GLUSTER_ACL_EXECUTE) ? SMB_ACL_EXECUTE : 0);
1359
1360 smb_ace++;
1361 }
1362
1363 return result;
1364 }
1365
1366
1367 static int gluster_ace_cmp(const void *left, const void *right)
1368 {
1369 int ret = 0;
1370 uint16_t tag_left, tag_right;
1371 uint32_t id_left, id_right;
1372
1373 /*
1374 Sorting precedence:
1375
1376 - Smaller TAG values must be earlier.
1377
1378 - Within same TAG, smaller identifiers must be earlier, E.g:
1379 UID 0 entry must be earlier than UID 200
1380 GID 17 entry must be earlier than GID 19
1381 */
1382
1383 /* TAG is the first element in the entry */
1384 tag_left = SVAL(left, 0);
1385 tag_right = SVAL(right, 0);
1386
1387 ret = (tag_left - tag_right);
1388 if (!ret) {
1389 /* ID is the third element in the entry, after two short
1390 integers (tag and perm), i.e at offset 4.
1391 */
1392 id_left = IVAL(left, 4);
1393 id_right = IVAL(right, 4);
1394 ret = id_left - id_right;
1395 }
1396
1397 return ret;
1398 }
1399
1400
1401 static ssize_t smb_to_gluster_acl(SMB_ACL_T theacl, char *buf, size_t len)
1402 {
1403 ssize_t size;
1404 struct smb_acl_entry *smb_ace;
1405 int i;
1406 int count;
1407 uint16_t tag;
1408 uint16_t perm;
1409 uint32_t id;
1410 int offset;
1411
1412 count = theacl->count;
1413
1414 size = GLUSTER_ACL_HEADER_SIZE + (count * GLUSTER_ACL_ENTRY_SIZE);
1415 if (!buf) {
1416 return size;
1417 }
1418
1419 if (len < size) {
1420 errno = ERANGE;
1421 return -1;
1422 }
1423
1424 smb_ace = theacl->acl;
1425
1426 /* Version is the first 4 bytes of the ACL */
1427 SIVAL(buf, 0, GLUSTER_ACL_VERSION);
1428 offset = GLUSTER_ACL_HEADER_SIZE;
1429
1430 for (i = 0; i < count; i++) {
1431 /* Calculate tag */
1432 switch(smb_ace->a_type) {
1433 case SMB_ACL_USER:
1434 tag = GLUSTER_ACL_USER;
1435 break;
1436 case SMB_ACL_USER_OBJ:
1437 tag = GLUSTER_ACL_USER_OBJ;
1438 break;
1439 case SMB_ACL_GROUP:
1440 tag = GLUSTER_ACL_GROUP;
1441 break;
1442 case SMB_ACL_GROUP_OBJ:
1443 tag = GLUSTER_ACL_GROUP_OBJ;
1444 break;
1445 case SMB_ACL_OTHER:
1446 tag = GLUSTER_ACL_OTHER;
1447 break;
1448 case SMB_ACL_MASK:
1449 tag = GLUSTER_ACL_MASK;
1450 break;
1451 default:
1452 DEBUG(0, ("Unknown tag value %d\n",
1453 smb_ace->a_type));
1454 errno = EINVAL;
1455 return -1;
1456 }
1457
1458
1459 /* Calculate id */
1460 switch(smb_ace->a_type) {
1461 case SMB_ACL_USER:
1462 id = smb_ace->info.user.uid;
1463 break;
1464 case SMB_ACL_GROUP:
1465 id = smb_ace->info.group.gid;
1466 break;
1467 default:
1468 id = GLUSTER_ACL_UNDEFINED_ID;
1469 break;
1470 }
1471
1472 /* Calculate perm */
1473 perm = 0;
1474
1475 perm |=
1476 ((smb_ace->a_perm & SMB_ACL_READ) ? GLUSTER_ACL_READ : 0);
1477 perm |=
1478 ((smb_ace->a_perm & SMB_ACL_WRITE) ? GLUSTER_ACL_WRITE : 0);
1479 perm |=
1480 ((smb_ace->a_perm & SMB_ACL_EXECUTE) ? GLUSTER_ACL_EXECUTE : 0);
1481
1482
1483 /* TAG is the first 2 bytes of an entry */
1484 SSVAL(buf, offset, tag);
1485 offset += 2;
1486
1487 /* PERM is the next 2 bytes of an entry */
1488 SSVAL(buf, offset, perm);
1489 offset += 2;
1490
1491 /* ID is the last 4 bytes of an entry */
1492 SIVAL(buf, offset, id);
1493 offset += 4;
1494
1495 smb_ace++;
1496 }
1497
1498 /* Skip the header, sort @count number of 8-byte entries */
1499 qsort(buf+GLUSTER_ACL_HEADER_SIZE, count, GLUSTER_ACL_ENTRY_SIZE,
1500 gluster_ace_cmp);
1501
1502 return size;
1503 }
1504
1505
1506 static SMB_ACL_T vfs_gluster_sys_acl_get_file(struct vfs_handle_struct *handle,
1507 const char *path_p,
1508 SMB_ACL_TYPE_T type,
1509 TALLOC_CTX *mem_ctx)
1510 {
1511 struct smb_acl_t *result;
1512 struct stat st;
1513 char *buf;
1514 const char *key;
1515 ssize_t ret, size = GLUSTER_ACL_SIZE(20);
1516
1517 switch (type) {
1518 case SMB_ACL_TYPE_ACCESS:
1519 key = "system.posix_acl_access";
1520 break;
1521 case SMB_ACL_TYPE_DEFAULT:
1522 key = "system.posix_acl_default";
1523 break;
1524 default:
1525 errno = EINVAL;
1526 return NULL;
1527 }
1528
1529 buf = alloca(size);
1530 if (!buf) {
1531 return NULL;
1532 }
1533
1534 ret = glfs_getxattr(handle->data, path_p, key, buf, size);
1535 if (ret == -1 && errno == ERANGE) {
1536 ret = glfs_getxattr(handle->data, path_p, key, 0, 0);
1537 if (ret > 0) {
1538 buf = alloca(ret);
1539 if (!buf) {
1540 return NULL;
1541 }
1542 ret = glfs_getxattr(handle->data, path_p, key, buf, ret);
1543 }
1544 }
1545
1546 /* retrieving the ACL from the xattr has finally failed, do a
1547 * mode-to-acl mapping */
1548
1549 if (ret == -1 && errno == ENODATA) {
1550 ret = glfs_stat(handle->data, path_p, &st);
1551 if (ret == 0) {
1552 result = mode_to_smb_acls(&st, mem_ctx);
1553 return result;
1554 }
1555 }
1556
1557 if (ret <= 0) {
1558 return NULL;
1559 }
1560
1561 result = gluster_to_smb_acl(buf, ret, mem_ctx);
1562
1563 return result;
1564 }
1565
1566 static SMB_ACL_T vfs_gluster_sys_acl_get_fd(struct vfs_handle_struct *handle,
1567 struct files_struct *fsp,
1568 TALLOC_CTX *mem_ctx)
1569 {
1570 struct smb_acl_t *result;
1571 struct stat st;
1572 ssize_t ret, size = GLUSTER_ACL_SIZE(20);
1573 char *buf;
1574 glfs_fd_t *glfd;
1575
1576 glfd = *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
1577
1578 buf = alloca(size);
1579 if (!buf) {
1580 return NULL;
1581 }
1582
1583 ret = glfs_fgetxattr(glfd, "system.posix_acl_access", buf, size);
1584 if (ret == -1 && errno == ERANGE) {
1585 ret = glfs_fgetxattr(glfd, "system.posix_acl_access", 0, 0);
1586 if (ret > 0) {
1587 buf = alloca(ret);
1588 if (!buf) {
1589 return NULL;
1590 }
1591 ret = glfs_fgetxattr(glfd, "system.posix_acl_access",
1592 buf, ret);
1593 }
1594 }
1595
1596 /* retrieving the ACL from the xattr has finally failed, do a
1597 * mode-to-acl mapping */
1598
1599 if (ret == -1 && errno == ENODATA) {
1600 ret = glfs_fstat(glfd, &st);
1601 if (ret == 0) {
1602 result = mode_to_smb_acls(&st, mem_ctx);
1603 return result;
1604 }
1605 }
1606
1607 if (ret <= 0) {
1608 return NULL;
1609 }
1610
1611 result = gluster_to_smb_acl(buf, ret, mem_ctx);
1612
1613 return result;
1614 }
1615
1616 static int vfs_gluster_sys_acl_set_file(struct vfs_handle_struct *handle,
1617 const char *name,
1618 SMB_ACL_TYPE_T acltype,
1619 SMB_ACL_T theacl)
1620 {
1621 int ret;
1622 const char *key;
1623 char *buf;
1624 ssize_t size;
1625
1626 switch (acltype) {
1627 case SMB_ACL_TYPE_ACCESS:
1628 key = "system.posix_acl_access";
1629 break;
1630 case SMB_ACL_TYPE_DEFAULT:
1631 key = "system.posix_acl_default";
1632 break;
1633 default:
1634 errno = EINVAL;
1635 return -1;
1636 }
1637
1638 size = smb_to_gluster_acl(theacl, 0, 0);
1639 buf = alloca(size);
1640
1641 size = smb_to_gluster_acl(theacl, buf, size);
1642 if (size == -1) {
1643 return -1;
1644 }
1645
1646 ret = glfs_setxattr(handle->data, name, key, buf, size, 0);
1647
1648 return ret;
1649 }
1650
1651 static int vfs_gluster_sys_acl_set_fd(struct vfs_handle_struct *handle,
1652 struct files_struct *fsp,
1653 SMB_ACL_T theacl)
1654 {
1655 int ret;
1656 char *buf;
1657 ssize_t size;
1658
1659 size = smb_to_gluster_acl(theacl, 0, 0);
1660 buf = alloca(size);
1661
1662 size = smb_to_gluster_acl(theacl, buf, size);
1663 if (size == -1) {
1664 return -1;
1665 }
1666
1667 ret = glfs_fsetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp),
1668 "system.posix_acl_access", buf, size, 0);
1669 return ret;
1670 }
1671
1672 static int vfs_gluster_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
1673 const char *path)
1674 {
1675 return glfs_removexattr(handle->data, path, "system.posix_acl_default");
1676 }
1677
1678 static struct vfs_fn_pointers glusterfs_fns = {
1679
1680 /* Disk Operations */
1681
1682 .connect_fn = vfs_gluster_connect,
1683 .disconnect_fn = vfs_gluster_disconnect,
1684 .disk_free_fn = vfs_gluster_disk_free,
1685 .get_quota_fn = vfs_gluster_get_quota,
1686 .set_quota_fn = vfs_gluster_set_quota,
1687 .statvfs_fn = vfs_gluster_statvfs,
1688 .fs_capabilities_fn = vfs_gluster_fs_capabilities,
1689
1690 .get_dfs_referrals_fn = NULL,
1691
1692 /* Directory Operations */
1693
1694 .opendir_fn = vfs_gluster_opendir,
1695 .fdopendir_fn = vfs_gluster_fdopendir,
1696 .readdir_fn = vfs_gluster_readdir,
1697 .seekdir_fn = vfs_gluster_seekdir,
1698 .telldir_fn = vfs_gluster_telldir,
1699 .rewind_dir_fn = vfs_gluster_rewinddir,
1700 .mkdir_fn = vfs_gluster_mkdir,
1701 .rmdir_fn = vfs_gluster_rmdir,
1702 .closedir_fn = vfs_gluster_closedir,
1703 .init_search_op_fn = vfs_gluster_init_search_op,
1704
1705 /* File Operations */
1706
1707 .open_fn = vfs_gluster_open,
1708 .create_file_fn = NULL,
1709 .close_fn = vfs_gluster_close,
1710 .read_fn = vfs_gluster_read,
1711 .pread_fn = vfs_gluster_pread,
1712 .pread_send_fn = vfs_gluster_pread_send,
1713 .pread_recv_fn = vfs_gluster_recv,
1714 .write_fn = vfs_gluster_write,
1715 .pwrite_fn = vfs_gluster_pwrite,
1716 .pwrite_send_fn = vfs_gluster_pwrite_send,
1717 .pwrite_recv_fn = vfs_gluster_recv,
1718 .lseek_fn = vfs_gluster_lseek,
1719 .sendfile_fn = vfs_gluster_sendfile,
1720 .recvfile_fn = vfs_gluster_recvfile,
1721 .rename_fn = vfs_gluster_rename,
1722 .fsync_fn = vfs_gluster_fsync,
1723 .fsync_send_fn = vfs_gluster_fsync_send,
1724 .fsync_recv_fn = vfs_gluster_fsync_recv,
1725
1726 .stat_fn = vfs_gluster_stat,
1727 .fstat_fn = vfs_gluster_fstat,
1728 .lstat_fn = vfs_gluster_lstat,
1729 .get_alloc_size_fn = vfs_gluster_get_alloc_size,
1730 .unlink_fn = vfs_gluster_unlink,
1731
1732 .chmod_fn = vfs_gluster_chmod,
1733 .fchmod_fn = vfs_gluster_fchmod,
1734 .chown_fn = vfs_gluster_chown,
1735 .fchown_fn = vfs_gluster_fchown,
1736 .lchown_fn = vfs_gluster_lchown,
1737 .chdir_fn = vfs_gluster_chdir,
1738 .getwd_fn = vfs_gluster_getwd,
1739 .ntimes_fn = vfs_gluster_ntimes,
1740 .ftruncate_fn = vfs_gluster_ftruncate,
1741 .fallocate_fn = vfs_gluster_fallocate,
1742 .lock_fn = vfs_gluster_lock,
1743 .kernel_flock_fn = vfs_gluster_kernel_flock,
1744 .linux_setlease_fn = vfs_gluster_linux_setlease,
1745 .getlock_fn = vfs_gluster_getlock,
1746 .symlink_fn = vfs_gluster_symlink,
1747 .readlink_fn = vfs_gluster_readlink,
1748 .link_fn = vfs_gluster_link,
1749 .mknod_fn = vfs_gluster_mknod,
1750 .realpath_fn = vfs_gluster_realpath,
1751 .chflags_fn = vfs_gluster_chflags,
1752 .file_id_create_fn = NULL,
1753 .copy_chunk_send_fn = NULL,
1754 .copy_chunk_recv_fn = NULL,
1755 .streaminfo_fn = NULL,
1756 .get_real_filename_fn = vfs_gluster_get_real_filename,
1757 .connectpath_fn = vfs_gluster_connectpath,
1758
1759 .brl_lock_windows_fn = NULL,
1760 .brl_unlock_windows_fn = NULL,
1761 .brl_cancel_windows_fn = NULL,
1762 .strict_lock_fn = NULL,
1763 .strict_unlock_fn = NULL,
1764 .translate_name_fn = NULL,
1765 .fsctl_fn = NULL,
1766
1767 /* NT ACL Operations */
1768 .fget_nt_acl_fn = NULL,
1769 .get_nt_acl_fn = NULL,
1770 .fset_nt_acl_fn = NULL,
1771 .audit_file_fn = NULL,
1772
1773 /* Posix ACL Operations */
1774 .chmod_acl_fn = NULL, /* passthrough to default */
1775 .fchmod_acl_fn = NULL, /* passthrough to default */
1776 .sys_acl_get_file_fn = vfs_gluster_sys_acl_get_file,
1777 .sys_acl_get_fd_fn = vfs_gluster_sys_acl_get_fd,
1778 .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
1779 .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
1780 .sys_acl_set_file_fn = vfs_gluster_sys_acl_set_file,
1781 .sys_acl_set_fd_fn = vfs_gluster_sys_acl_set_fd,
1782 .sys_acl_delete_def_file_fn = vfs_gluster_sys_acl_delete_def_file,
1783
1784 /* EA Operations */
1785 .getxattr_fn = vfs_gluster_getxattr,
1786 .fgetxattr_fn = vfs_gluster_fgetxattr,
1787 .listxattr_fn = vfs_gluster_listxattr,
1788 .flistxattr_fn = vfs_gluster_flistxattr,
1789 .removexattr_fn = vfs_gluster_removexattr,
1790 .fremovexattr_fn = vfs_gluster_fremovexattr,
1791 .setxattr_fn = vfs_gluster_setxattr,
1792 .fsetxattr_fn = vfs_gluster_fsetxattr,
1793
1794 /* AIO Operations */
1795 .aio_force_fn = vfs_gluster_aio_force,
1796
1797 /* Offline Operations */
1798 .is_offline_fn = vfs_gluster_is_offline,
1799 .set_offline_fn = vfs_gluster_set_offline,
1800
1801 /* Durable handle Operations */
1802 .durable_cookie_fn = NULL,
1803 .durable_disconnect_fn = NULL,
1804 .durable_reconnect_fn = NULL,
1805 };
1806
1807 NTSTATUS vfs_glusterfs_init(void);
1808 NTSTATUS vfs_glusterfs_init(void)
1809 {
1810 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1811 "glusterfs", &glusterfs_fns);
1812 }
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