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debug: Set close-on-exec for the main log file FD
[Samba.git] / source3 / modules / vfs_glusterfs.c
blobcfdd195125deff6723def38045e0a3d1df1240b2
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
47 #define DEFAULT_VOLFILE_SERVER "localhost"
48
49 static int read_fd = -1;
50 static int write_fd = -1;
51 static struct tevent_fd *aio_read_event = NULL;
52
53 /**
54 * Helper to convert struct stat to struct stat_ex.
55 */
56 static void smb_stat_ex_from_stat(struct stat_ex *dst, const struct stat *src)
57 {
58 ZERO_STRUCTP(dst);
59
60 dst->st_ex_dev = src->st_dev;
61 dst->st_ex_ino = src->st_ino;
62 dst->st_ex_mode = src->st_mode;
63 dst->st_ex_nlink = src->st_nlink;
64 dst->st_ex_uid = src->st_uid;
65 dst->st_ex_gid = src->st_gid;
66 dst->st_ex_rdev = src->st_rdev;
67 dst->st_ex_size = src->st_size;
68 dst->st_ex_atime.tv_sec = src->st_atime;
69 dst->st_ex_mtime.tv_sec = src->st_mtime;
70 dst->st_ex_ctime.tv_sec = src->st_ctime;
71 dst->st_ex_btime.tv_sec = src->st_mtime;
72 dst->st_ex_blksize = src->st_blksize;
73 dst->st_ex_blocks = src->st_blocks;
74 #ifdef STAT_HAVE_NSEC
75 dst->st_ex_atime.tv_nsec = src->st_atime_nsec;
76 dst->st_ex_mtime.tv_nsec = src->st_mtime_nsec;
77 dst->st_ex_ctime.tv_nsec = src->st_ctime_nsec;
78 dst->st_ex_btime.tv_nsec = src->st_mtime_nsec;
79 #endif
80 }
81
82 /* pre-opened glfs_t */
83
84 static struct glfs_preopened {
85 char *volume;
86 char *connectpath;
87 glfs_t *fs;
88 int ref;
89 struct glfs_preopened *next, *prev;
90 } *glfs_preopened;
91
92
93 static int glfs_set_preopened(const char *volume, const char *connectpath, glfs_t *fs)
94 {
95 struct glfs_preopened *entry = NULL;
96
97 entry = talloc_zero(NULL, struct glfs_preopened);
98 if (!entry) {
99 errno = ENOMEM;
100 return -1;
101 }
102
103 entry->volume = talloc_strdup(entry, volume);
104 if (!entry->volume) {
105 talloc_free(entry);
106 errno = ENOMEM;
107 return -1;
108 }
109
110 entry->connectpath = talloc_strdup(entry, connectpath);
111 if (entry->connectpath == NULL) {
112 talloc_free(entry);
113 errno = ENOMEM;
114 return -1;
115 }
116
117 entry->fs = fs;
118 entry->ref = 1;
119
120 DLIST_ADD(glfs_preopened, entry);
121
122 return 0;
123 }
124
125 static glfs_t *glfs_find_preopened(const char *volume, const char *connectpath)
126 {
127 struct glfs_preopened *entry = NULL;
128
129 for (entry = glfs_preopened; entry; entry = entry->next) {
130 if (strcmp(entry->volume, volume) == 0 &&
131 strcmp(entry->connectpath, connectpath) == 0)
132 {
133 entry->ref++;
134 return entry->fs;
135 }
136 }
137
138 return NULL;
139 }
140
141 static void glfs_clear_preopened(glfs_t *fs)
142 {
143 struct glfs_preopened *entry = NULL;
144
145 for (entry = glfs_preopened; entry; entry = entry->next) {
146 if (entry->fs == fs) {
147 if (--entry->ref)
148 return;
149
150 DLIST_REMOVE(glfs_preopened, entry);
151
152 glfs_fini(entry->fs);
153 talloc_free(entry);
154 }
155 }
156 }
157
158 /* Disk Operations */
159
160 static int vfs_gluster_connect(struct vfs_handle_struct *handle,
161 const char *service,
162 const char *user)
163 {
164 const char *volfile_server;
165 const char *volume;
166 char *logfile;
167 int loglevel;
168 glfs_t *fs = NULL;
169 TALLOC_CTX *tmp_ctx;
170 int ret = 0;
171
172 tmp_ctx = talloc_new(NULL);
173 if (tmp_ctx == NULL) {
174 ret = -1;
175 goto done;
176 }
177 logfile = lp_parm_talloc_string(tmp_ctx, SNUM(handle->conn), "glusterfs",
178 "logfile", NULL);
179
180 loglevel = lp_parm_int(SNUM(handle->conn), "glusterfs", "loglevel", -1);
181
182 volfile_server = lp_parm_const_string(SNUM(handle->conn), "glusterfs",
183 "volfile_server", NULL);
184 if (volfile_server == NULL) {
185 volfile_server = DEFAULT_VOLFILE_SERVER;
186 }
187
188 volume = lp_parm_const_string(SNUM(handle->conn), "glusterfs", "volume",
189 NULL);
190 if (volume == NULL) {
191 volume = service;
192 }
193
194 fs = glfs_find_preopened(volume, handle->conn->connectpath);
195 if (fs) {
196 goto done;
197 }
198
199 fs = glfs_new(volume);
200 if (fs == NULL) {
201 ret = -1;
202 goto done;
203 }
204
205 ret = glfs_set_volfile_server(fs, "tcp", volfile_server, 0);
206 if (ret < 0) {
207 DEBUG(0, ("Failed to set volfile_server %s\n", volfile_server));
208 goto done;
209 }
210
211 ret = glfs_set_xlator_option(fs, "*-md-cache", "cache-posix-acl",
212 "true");
213 if (ret < 0) {
214 DEBUG(0, ("%s: Failed to set xlator options\n", volume));
215 goto done;
216 }
217
218
219 ret = glfs_set_xlator_option(fs, "*-snapview-client",
220 "snapdir-entry-path",
221 handle->conn->connectpath);
222 if (ret < 0) {
223 DEBUG(0, ("%s: Failed to set xlator option:"
224 " snapdir-entry-path\n", volume));
225 glfs_fini(fs);
226 return -1;
227 }
228
229 ret = glfs_set_logging(fs, logfile, loglevel);
230 if (ret < 0) {
231 DEBUG(0, ("%s: Failed to set logfile %s loglevel %d\n",
232 volume, logfile, loglevel));
233 goto done;
234 }
235
236 ret = glfs_init(fs);
237 if (ret < 0) {
238 DEBUG(0, ("%s: Failed to initialize volume (%s)\n",
239 volume, strerror(errno)));
240 goto done;
241 }
242
243 ret = glfs_set_preopened(volume, handle->conn->connectpath, fs);
244 if (ret < 0) {
245 DEBUG(0, ("%s: Failed to register volume (%s)\n",
246 volume, strerror(errno)));
247 goto done;
248 }
249 done:
250 talloc_free(tmp_ctx);
251 if (ret < 0) {
252 if (fs)
253 glfs_fini(fs);
254 return -1;
255 } else {
256 DEBUG(0, ("%s: Initialized volume from server %s\n",
257 volume, volfile_server));
258 handle->data = fs;
259 return 0;
260 }
261 }
262
263 static void vfs_gluster_disconnect(struct vfs_handle_struct *handle)
264 {
265 glfs_t *fs = NULL;
266
267 fs = handle->data;
268
269 glfs_clear_preopened(fs);
270 }
271
272 static uint64_t vfs_gluster_disk_free(struct vfs_handle_struct *handle,
273 const char *path, bool small_query,
274 uint64_t *bsize_p, uint64_t *dfree_p,
275 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 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 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 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 enum vfs_fallocate_mode mode,
931 off_t offset, off_t len)
932 {
933 errno = ENOTSUP;
934 return -1;
935 }
936
937 static char *vfs_gluster_realpath(struct vfs_handle_struct *handle,
938 const char *path)
939 {
940 return glfs_realpath(handle->data, path, 0);
941 }
942
943 static bool vfs_gluster_lock(struct vfs_handle_struct *handle,
944 files_struct *fsp, int op, off_t offset,
945 off_t count, int type)
946 {
947 struct flock flock = { 0, };
948 int ret;
949
950 flock.l_type = type;
951 flock.l_whence = SEEK_SET;
952 flock.l_start = offset;
953 flock.l_len = count;
954 flock.l_pid = 0;
955
956 ret = glfs_posix_lock(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), op, &flock);
957
958 if (op == F_GETLK) {
959 /* lock query, true if someone else has locked */
960 if ((ret != -1) &&
961 (flock.l_type != F_UNLCK) &&
962 (flock.l_pid != 0) && (flock.l_pid != getpid()))
963 return true;
964 /* not me */
965 return false;
966 }
967
968 if (ret == -1) {
969 return false;
970 }
971
972 return true;
973 }
974
975 static int vfs_gluster_kernel_flock(struct vfs_handle_struct *handle,
976 files_struct *fsp, uint32 share_mode,
977 uint32_t access_mask)
978 {
979 errno = ENOSYS;
980 return -1;
981 }
982
983 static int vfs_gluster_linux_setlease(struct vfs_handle_struct *handle,
984 files_struct *fsp, int leasetype)
985 {
986 errno = ENOSYS;
987 return -1;
988 }
989
990 static bool vfs_gluster_getlock(struct vfs_handle_struct *handle,
991 files_struct *fsp, off_t *poffset,
992 off_t *pcount, int *ptype, pid_t *ppid)
993 {
994 struct flock flock = { 0, };
995 int ret;
996
997 flock.l_type = *ptype;
998 flock.l_whence = SEEK_SET;
999 flock.l_start = *poffset;
1000 flock.l_len = *pcount;
1001 flock.l_pid = 0;
1002
1003 ret = glfs_posix_lock(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), F_GETLK, &flock);
1004
1005 if (ret == -1) {
1006 return false;
1007 }
1008
1009 *ptype = flock.l_type;
1010 *poffset = flock.l_start;
1011 *pcount = flock.l_len;
1012 *ppid = flock.l_pid;
1013
1014 return true;
1015 }
1016
1017 static int vfs_gluster_symlink(struct vfs_handle_struct *handle,
1018 const char *oldpath, const char *newpath)
1019 {
1020 return glfs_symlink(handle->data, oldpath, newpath);
1021 }
1022
1023 static int vfs_gluster_readlink(struct vfs_handle_struct *handle,
1024 const char *path, char *buf, size_t bufsiz)
1025 {
1026 return glfs_readlink(handle->data, path, buf, bufsiz);
1027 }
1028
1029 static int vfs_gluster_link(struct vfs_handle_struct *handle,
1030 const char *oldpath, const char *newpath)
1031 {
1032 return glfs_link(handle->data, oldpath, newpath);
1033 }
1034
1035 static int vfs_gluster_mknod(struct vfs_handle_struct *handle, const char *path,
1036 mode_t mode, SMB_DEV_T dev)
1037 {
1038 return glfs_mknod(handle->data, path, mode, dev);
1039 }
1040
1041 static NTSTATUS vfs_gluster_notify_watch(struct vfs_handle_struct *handle,
1042 struct sys_notify_context *ctx,
1043 const char *path, uint32_t *filter,
1044 uint32_t *subdir_filter,
1045 void (*callback) (struct sys_notify_context *ctx,
1046 void *private_data,
1047 struct notify_event *ev),
1048 void *private_data, void *handle_p)
1049 {
1050 return NT_STATUS_NOT_IMPLEMENTED;
1051 }
1052
1053 static int vfs_gluster_chflags(struct vfs_handle_struct *handle,
1054 const char *path, unsigned int flags)
1055 {
1056 errno = ENOSYS;
1057 return -1;
1058 }
1059
1060 static int vfs_gluster_get_real_filename(struct vfs_handle_struct *handle,
1061 const char *path, const char *name,
1062 TALLOC_CTX *mem_ctx, char **found_name)
1063 {
1064 int ret;
1065 char key_buf[NAME_MAX + 64];
1066 char val_buf[NAME_MAX + 1];
1067
1068 if (strlen(name) >= NAME_MAX) {
1069 errno = ENAMETOOLONG;
1070 return -1;
1071 }
1072
1073 snprintf(key_buf, NAME_MAX + 64,
1074 "glusterfs.get_real_filename:%s", name);
1075
1076 ret = glfs_getxattr(handle->data, path, key_buf, val_buf, NAME_MAX + 1);
1077 if (ret == -1) {
1078 if (errno == ENODATA) {
1079 errno = EOPNOTSUPP;
1080 }
1081 return -1;
1082 }
1083
1084 *found_name = talloc_strdup(mem_ctx, val_buf);
1085 if (found_name[0] == NULL) {
1086 errno = ENOMEM;
1087 return -1;
1088 }
1089 return 0;
1090 }
1091
1092 static const char *vfs_gluster_connectpath(struct vfs_handle_struct *handle,
1093 const char *filename)
1094 {
1095 return handle->conn->connectpath;
1096 }
1097
1098 /* EA Operations */
1099
1100 static ssize_t vfs_gluster_getxattr(struct vfs_handle_struct *handle,
1101 const char *path, const char *name,
1102 void *value, size_t size)
1103 {
1104 return glfs_getxattr(handle->data, path, name, value, size);
1105 }
1106
1107 static ssize_t vfs_gluster_fgetxattr(struct vfs_handle_struct *handle,
1108 files_struct *fsp, const char *name,
1109 void *value, size_t size)
1110 {
1111 return glfs_fgetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name, value, size);
1112 }
1113
1114 static ssize_t vfs_gluster_listxattr(struct vfs_handle_struct *handle,
1115 const char *path, char *list, size_t size)
1116 {
1117 return glfs_listxattr(handle->data, path, list, size);
1118 }
1119
1120 static ssize_t vfs_gluster_flistxattr(struct vfs_handle_struct *handle,
1121 files_struct *fsp, char *list,
1122 size_t size)
1123 {
1124 return glfs_flistxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), list, size);
1125 }
1126
1127 static int vfs_gluster_removexattr(struct vfs_handle_struct *handle,
1128 const char *path, const char *name)
1129 {
1130 return glfs_removexattr(handle->data, path, name);
1131 }
1132
1133 static int vfs_gluster_fremovexattr(struct vfs_handle_struct *handle,
1134 files_struct *fsp, const char *name)
1135 {
1136 return glfs_fremovexattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name);
1137 }
1138
1139 static int vfs_gluster_setxattr(struct vfs_handle_struct *handle,
1140 const char *path, const char *name,
1141 const void *value, size_t size, int flags)
1142 {
1143 return glfs_setxattr(handle->data, path, name, value, size, flags);
1144 }
1145
1146 static int vfs_gluster_fsetxattr(struct vfs_handle_struct *handle,
1147 files_struct *fsp, const char *name,
1148 const void *value, size_t size, int flags)
1149 {
1150 return glfs_fsetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name, value, size,
1151 flags);
1152 }
1153
1154 /* AIO Operations */
1155
1156 static bool vfs_gluster_aio_force(struct vfs_handle_struct *handle,
1157 files_struct *fsp)
1158 {
1159 return false;
1160 }
1161
1162 /* Offline Operations */
1163
1164 static bool vfs_gluster_is_offline(struct vfs_handle_struct *handle,
1165 const struct smb_filename *fname,
1166 SMB_STRUCT_STAT *sbuf)
1167 {
1168 return false;
1169 }
1170
1171 static int vfs_gluster_set_offline(struct vfs_handle_struct *handle,
1172 const struct smb_filename *fname)
1173 {
1174 errno = ENOTSUP;
1175 return -1;
1176 }
1177
1178 /*
1179 Gluster ACL Format:
1180
1181 Size = 4 (header) + N * 8 (entry)
1182
1183 Offset Size Field (Little Endian)
1184 -------------------------------------
1185 0-3 4-byte Version
1186
1187 4-5 2-byte Entry-1 tag
1188 6-7 2-byte Entry-1 perm
1189 8-11 4-byte Entry-1 id
1190
1191 12-13 2-byte Entry-2 tag
1192 14-15 2-byte Entry-2 perm
1193 16-19 4-byte Entry-2 id
1194
1195 ...
1196
1197 */
1198
1199 /* header version */
1200 #define GLUSTER_ACL_VERSION 2
1201
1202 /* perm bits */
1203 #define GLUSTER_ACL_READ 0x04
1204 #define GLUSTER_ACL_WRITE 0x02
1205 #define GLUSTER_ACL_EXECUTE 0x01
1206
1207 /* tag values */
1208 #define GLUSTER_ACL_UNDEFINED_TAG 0x00
1209 #define GLUSTER_ACL_USER_OBJ 0x01
1210 #define GLUSTER_ACL_USER 0x02
1211 #define GLUSTER_ACL_GROUP_OBJ 0x04
1212 #define GLUSTER_ACL_GROUP 0x08
1213 #define GLUSTER_ACL_MASK 0x10
1214 #define GLUSTER_ACL_OTHER 0x20
1215
1216 #define GLUSTER_ACL_UNDEFINED_ID (-1)
1217
1218 #define GLUSTER_ACL_HEADER_SIZE 4
1219 #define GLUSTER_ACL_ENTRY_SIZE 8
1220
1221 #define GLUSTER_ACL_SIZE(n) (GLUSTER_ACL_HEADER_SIZE + (n * GLUSTER_ACL_ENTRY_SIZE))
1222
1223 static SMB_ACL_T mode_to_smb_acls(const struct stat *mode, TALLOC_CTX *mem_ctx)
1224 {
1225 struct smb_acl_t *result;
1226 int count;
1227
1228 count = 3;
1229 result = sys_acl_init(mem_ctx);
1230 if (!result) {
1231 errno = ENOMEM;
1232 return NULL;
1233 }
1234
1235 result->acl = talloc_array(result, struct smb_acl_entry, count);
1236 if (!result->acl) {
1237 errno = ENOMEM;
1238 talloc_free(result);
1239 return NULL;
1240 }
1241
1242 result->count = count;
1243
1244 result->acl[0].a_type = SMB_ACL_USER_OBJ;
1245 result->acl[0].a_perm = (mode->st_mode & S_IRWXU) >> 6;;
1246
1247 result->acl[1].a_type = SMB_ACL_GROUP_OBJ;
1248 result->acl[1].a_perm = (mode->st_mode & S_IRWXG) >> 3;;
1249
1250 result->acl[2].a_type = SMB_ACL_OTHER;
1251 result->acl[2].a_perm = mode->st_mode & S_IRWXO;;
1252
1253 return result;
1254 }
1255
1256 static SMB_ACL_T gluster_to_smb_acl(const char *buf, size_t xattr_size,
1257 TALLOC_CTX *mem_ctx)
1258 {
1259 int count;
1260 size_t size;
1261 struct smb_acl_entry *smb_ace;
1262 struct smb_acl_t *result;
1263 int i;
1264 int offset;
1265 uint16_t tag;
1266 uint16_t perm;
1267 uint32_t id;
1268
1269 size = xattr_size;
1270
1271 if (size < GLUSTER_ACL_HEADER_SIZE) {
1272 /* ACL should be at least as big as the header (4 bytes) */
1273 errno = EINVAL;
1274 return NULL;
1275 }
1276
1277 size -= GLUSTER_ACL_HEADER_SIZE; /* size of header = 4 bytes */
1278
1279 if (size % GLUSTER_ACL_ENTRY_SIZE) {
1280 /* Size of entries must strictly be a multiple of
1281 size of an ACE (8 bytes)
1282 */
1283 errno = EINVAL;
1284 return NULL;
1285 }
1286
1287 count = size / GLUSTER_ACL_ENTRY_SIZE;
1288
1289 /* Version is the first 4 bytes of the ACL */
1290 if (IVAL(buf, 0) != GLUSTER_ACL_VERSION) {
1291 DEBUG(0, ("Unknown gluster ACL version: %d\n",
1292 IVAL(buf, 0)));
1293 return NULL;
1294 }
1295 offset = GLUSTER_ACL_HEADER_SIZE;
1296
1297 result = sys_acl_init(mem_ctx);
1298 if (!result) {
1299 errno = ENOMEM;
1300 return NULL;
1301 }
1302
1303 result->acl = talloc_array(result, struct smb_acl_entry, count);
1304 if (!result->acl) {
1305 errno = ENOMEM;
1306 talloc_free(result);
1307 return NULL;
1308 }
1309
1310 result->count = count;
1311
1312 smb_ace = result->acl;
1313
1314 for (i = 0; i < count; i++) {
1315 /* TAG is the first 2 bytes of an entry */
1316 tag = SVAL(buf, offset);
1317 offset += 2;
1318
1319 /* PERM is the next 2 bytes of an entry */
1320 perm = SVAL(buf, offset);
1321 offset += 2;
1322
1323 /* ID is the last 4 bytes of an entry */
1324 id = IVAL(buf, offset);
1325 offset += 4;
1326
1327 switch(tag) {
1328 case GLUSTER_ACL_USER:
1329 smb_ace->a_type = SMB_ACL_USER;
1330 break;
1331 case GLUSTER_ACL_USER_OBJ:
1332 smb_ace->a_type = SMB_ACL_USER_OBJ;
1333 break;
1334 case GLUSTER_ACL_GROUP:
1335 smb_ace->a_type = SMB_ACL_GROUP;
1336 break;
1337 case GLUSTER_ACL_GROUP_OBJ:
1338 smb_ace->a_type = SMB_ACL_GROUP_OBJ;
1339 break;
1340 case GLUSTER_ACL_OTHER:
1341 smb_ace->a_type = SMB_ACL_OTHER;
1342 break;
1343 case GLUSTER_ACL_MASK:
1344 smb_ace->a_type = SMB_ACL_MASK;
1345 break;
1346 default:
1347 DEBUG(0, ("unknown tag type %d\n", (unsigned int) tag));
1348 return NULL;
1349 }
1350
1351
1352 switch(smb_ace->a_type) {
1353 case SMB_ACL_USER:
1354 smb_ace->info.user.uid = id;
1355 break;
1356 case SMB_ACL_GROUP:
1357 smb_ace->info.group.gid = id;
1358 break;
1359 default:
1360 break;
1361 }
1362
1363 smb_ace->a_perm = 0;
1364 smb_ace->a_perm |=
1365 ((perm & GLUSTER_ACL_READ) ? SMB_ACL_READ : 0);
1366 smb_ace->a_perm |=
1367 ((perm & GLUSTER_ACL_WRITE) ? SMB_ACL_WRITE : 0);
1368 smb_ace->a_perm |=
1369 ((perm & GLUSTER_ACL_EXECUTE) ? SMB_ACL_EXECUTE : 0);
1370
1371 smb_ace++;
1372 }
1373
1374 return result;
1375 }
1376
1377
1378 static int gluster_ace_cmp(const void *left, const void *right)
1379 {
1380 int ret = 0;
1381 uint16_t tag_left, tag_right;
1382 uint32_t id_left, id_right;
1383
1384 /*
1385 Sorting precedence:
1386
1387 - Smaller TAG values must be earlier.
1388
1389 - Within same TAG, smaller identifiers must be earlier, E.g:
1390 UID 0 entry must be earlier than UID 200
1391 GID 17 entry must be earlier than GID 19
1392 */
1393
1394 /* TAG is the first element in the entry */
1395 tag_left = SVAL(left, 0);
1396 tag_right = SVAL(right, 0);
1397
1398 ret = (tag_left - tag_right);
1399 if (!ret) {
1400 /* ID is the third element in the entry, after two short
1401 integers (tag and perm), i.e at offset 4.
1402 */
1403 id_left = IVAL(left, 4);
1404 id_right = IVAL(right, 4);
1405 ret = id_left - id_right;
1406 }
1407
1408 return ret;
1409 }
1410
1411
1412 static ssize_t smb_to_gluster_acl(SMB_ACL_T theacl, char *buf, size_t len)
1413 {
1414 ssize_t size;
1415 struct smb_acl_entry *smb_ace;
1416 int i;
1417 int count;
1418 uint16_t tag;
1419 uint16_t perm;
1420 uint32_t id;
1421 int offset;
1422
1423 count = theacl->count;
1424
1425 size = GLUSTER_ACL_HEADER_SIZE + (count * GLUSTER_ACL_ENTRY_SIZE);
1426 if (!buf) {
1427 return size;
1428 }
1429
1430 if (len < size) {
1431 errno = ERANGE;
1432 return -1;
1433 }
1434
1435 smb_ace = theacl->acl;
1436
1437 /* Version is the first 4 bytes of the ACL */
1438 SIVAL(buf, 0, GLUSTER_ACL_VERSION);
1439 offset = GLUSTER_ACL_HEADER_SIZE;
1440
1441 for (i = 0; i < count; i++) {
1442 /* Calculate tag */
1443 switch(smb_ace->a_type) {
1444 case SMB_ACL_USER:
1445 tag = GLUSTER_ACL_USER;
1446 break;
1447 case SMB_ACL_USER_OBJ:
1448 tag = GLUSTER_ACL_USER_OBJ;
1449 break;
1450 case SMB_ACL_GROUP:
1451 tag = GLUSTER_ACL_GROUP;
1452 break;
1453 case SMB_ACL_GROUP_OBJ:
1454 tag = GLUSTER_ACL_GROUP_OBJ;
1455 break;
1456 case SMB_ACL_OTHER:
1457 tag = GLUSTER_ACL_OTHER;
1458 break;
1459 case SMB_ACL_MASK:
1460 tag = GLUSTER_ACL_MASK;
1461 break;
1462 default:
1463 DEBUG(0, ("Unknown tag value %d\n",
1464 smb_ace->a_type));
1465 errno = EINVAL;
1466 return -1;
1467 }
1468
1469
1470 /* Calculate id */
1471 switch(smb_ace->a_type) {
1472 case SMB_ACL_USER:
1473 id = smb_ace->info.user.uid;
1474 break;
1475 case SMB_ACL_GROUP:
1476 id = smb_ace->info.group.gid;
1477 break;
1478 default:
1479 id = GLUSTER_ACL_UNDEFINED_ID;
1480 break;
1481 }
1482
1483 /* Calculate perm */
1484 perm = 0;
1485
1486 perm |=
1487 ((smb_ace->a_perm & SMB_ACL_READ) ? GLUSTER_ACL_READ : 0);
1488 perm |=
1489 ((smb_ace->a_perm & SMB_ACL_WRITE) ? GLUSTER_ACL_WRITE : 0);
1490 perm |=
1491 ((smb_ace->a_perm & SMB_ACL_EXECUTE) ? GLUSTER_ACL_EXECUTE : 0);
1492
1493
1494 /* TAG is the first 2 bytes of an entry */
1495 SSVAL(buf, offset, tag);
1496 offset += 2;
1497
1498 /* PERM is the next 2 bytes of an entry */
1499 SSVAL(buf, offset, perm);
1500 offset += 2;
1501
1502 /* ID is the last 4 bytes of an entry */
1503 SIVAL(buf, offset, id);
1504 offset += 4;
1505
1506 smb_ace++;
1507 }
1508
1509 /* Skip the header, sort @count number of 8-byte entries */
1510 qsort(buf+GLUSTER_ACL_HEADER_SIZE, count, GLUSTER_ACL_ENTRY_SIZE,
1511 gluster_ace_cmp);
1512
1513 return size;
1514 }
1515
1516
1517 static SMB_ACL_T vfs_gluster_sys_acl_get_file(struct vfs_handle_struct *handle,
1518 const char *path_p,
1519 SMB_ACL_TYPE_T type,
1520 TALLOC_CTX *mem_ctx)
1521 {
1522 struct smb_acl_t *result;
1523 struct stat st;
1524 char *buf;
1525 const char *key;
1526 ssize_t ret, size = GLUSTER_ACL_SIZE(20);
1527
1528 switch (type) {
1529 case SMB_ACL_TYPE_ACCESS:
1530 key = "system.posix_acl_access";
1531 break;
1532 case SMB_ACL_TYPE_DEFAULT:
1533 key = "system.posix_acl_default";
1534 break;
1535 default:
1536 errno = EINVAL;
1537 return NULL;
1538 }
1539
1540 buf = alloca(size);
1541 if (!buf) {
1542 return NULL;
1543 }
1544
1545 ret = glfs_getxattr(handle->data, path_p, key, buf, size);
1546 if (ret == -1 && errno == ERANGE) {
1547 ret = glfs_getxattr(handle->data, path_p, key, 0, 0);
1548 if (ret > 0) {
1549 buf = alloca(ret);
1550 if (!buf) {
1551 return NULL;
1552 }
1553 ret = glfs_getxattr(handle->data, path_p, key, buf, ret);
1554 }
1555 }
1556
1557 /* retrieving the ACL from the xattr has finally failed, do a
1558 * mode-to-acl mapping */
1559
1560 if (ret == -1 && errno == ENODATA) {
1561 ret = glfs_stat(handle->data, path_p, &st);
1562 if (ret == 0) {
1563 result = mode_to_smb_acls(&st, mem_ctx);
1564 return result;
1565 }
1566 }
1567
1568 if (ret <= 0) {
1569 return NULL;
1570 }
1571
1572 result = gluster_to_smb_acl(buf, ret, mem_ctx);
1573
1574 return result;
1575 }
1576
1577 static SMB_ACL_T vfs_gluster_sys_acl_get_fd(struct vfs_handle_struct *handle,
1578 struct files_struct *fsp,
1579 TALLOC_CTX *mem_ctx)
1580 {
1581 struct smb_acl_t *result;
1582 struct stat st;
1583 ssize_t ret, size = GLUSTER_ACL_SIZE(20);
1584 char *buf;
1585 glfs_fd_t *glfd;
1586
1587 glfd = *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
1588
1589 buf = alloca(size);
1590 if (!buf) {
1591 return NULL;
1592 }
1593
1594 ret = glfs_fgetxattr(glfd, "system.posix_acl_access", buf, size);
1595 if (ret == -1 && errno == ERANGE) {
1596 ret = glfs_fgetxattr(glfd, "system.posix_acl_access", 0, 0);
1597 if (ret > 0) {
1598 buf = alloca(ret);
1599 if (!buf) {
1600 return NULL;
1601 }
1602 ret = glfs_fgetxattr(glfd, "system.posix_acl_access",
1603 buf, ret);
1604 }
1605 }
1606
1607 /* retrieving the ACL from the xattr has finally failed, do a
1608 * mode-to-acl mapping */
1609
1610 if (ret == -1 && errno == ENODATA) {
1611 ret = glfs_fstat(glfd, &st);
1612 if (ret == 0) {
1613 result = mode_to_smb_acls(&st, mem_ctx);
1614 return result;
1615 }
1616 }
1617
1618 if (ret <= 0) {
1619 return NULL;
1620 }
1621
1622 result = gluster_to_smb_acl(buf, ret, mem_ctx);
1623
1624 return result;
1625 }
1626
1627 static int vfs_gluster_sys_acl_set_file(struct vfs_handle_struct *handle,
1628 const char *name,
1629 SMB_ACL_TYPE_T acltype,
1630 SMB_ACL_T theacl)
1631 {
1632 int ret;
1633 const char *key;
1634 char *buf;
1635 ssize_t size;
1636
1637 switch (acltype) {
1638 case SMB_ACL_TYPE_ACCESS:
1639 key = "system.posix_acl_access";
1640 break;
1641 case SMB_ACL_TYPE_DEFAULT:
1642 key = "system.posix_acl_default";
1643 break;
1644 default:
1645 errno = EINVAL;
1646 return -1;
1647 }
1648
1649 size = smb_to_gluster_acl(theacl, 0, 0);
1650 buf = alloca(size);
1651
1652 size = smb_to_gluster_acl(theacl, buf, size);
1653 if (size == -1) {
1654 return -1;
1655 }
1656
1657 ret = glfs_setxattr(handle->data, name, key, buf, size, 0);
1658
1659 return ret;
1660 }
1661
1662 static int vfs_gluster_sys_acl_set_fd(struct vfs_handle_struct *handle,
1663 struct files_struct *fsp,
1664 SMB_ACL_T theacl)
1665 {
1666 int ret;
1667 char *buf;
1668 ssize_t size;
1669
1670 size = smb_to_gluster_acl(theacl, 0, 0);
1671 buf = alloca(size);
1672
1673 size = smb_to_gluster_acl(theacl, buf, size);
1674 if (size == -1) {
1675 return -1;
1676 }
1677
1678 ret = glfs_fsetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp),
1679 "system.posix_acl_access", buf, size, 0);
1680 return ret;
1681 }
1682
1683 static int vfs_gluster_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
1684 const char *path)
1685 {
1686 return glfs_removexattr(handle->data, path, "system.posix_acl_default");
1687 }
1688
1689 static struct vfs_fn_pointers glusterfs_fns = {
1690
1691 /* Disk Operations */
1692
1693 .connect_fn = vfs_gluster_connect,
1694 .disconnect_fn = vfs_gluster_disconnect,
1695 .disk_free_fn = vfs_gluster_disk_free,
1696 .get_quota_fn = vfs_gluster_get_quota,
1697 .set_quota_fn = vfs_gluster_set_quota,
1698 .statvfs_fn = vfs_gluster_statvfs,
1699 .fs_capabilities_fn = vfs_gluster_fs_capabilities,
1700
1701 .get_dfs_referrals_fn = NULL,
1702
1703 /* Directory Operations */
1704
1705 .opendir_fn = vfs_gluster_opendir,
1706 .fdopendir_fn = vfs_gluster_fdopendir,
1707 .readdir_fn = vfs_gluster_readdir,
1708 .seekdir_fn = vfs_gluster_seekdir,
1709 .telldir_fn = vfs_gluster_telldir,
1710 .rewind_dir_fn = vfs_gluster_rewinddir,
1711 .mkdir_fn = vfs_gluster_mkdir,
1712 .rmdir_fn = vfs_gluster_rmdir,
1713 .closedir_fn = vfs_gluster_closedir,
1714 .init_search_op_fn = vfs_gluster_init_search_op,
1715
1716 /* File Operations */
1717
1718 .open_fn = vfs_gluster_open,
1719 .create_file_fn = NULL,
1720 .close_fn = vfs_gluster_close,
1721 .read_fn = vfs_gluster_read,
1722 .pread_fn = vfs_gluster_pread,
1723 .pread_send_fn = vfs_gluster_pread_send,
1724 .pread_recv_fn = vfs_gluster_recv,
1725 .write_fn = vfs_gluster_write,
1726 .pwrite_fn = vfs_gluster_pwrite,
1727 .pwrite_send_fn = vfs_gluster_pwrite_send,
1728 .pwrite_recv_fn = vfs_gluster_recv,
1729 .lseek_fn = vfs_gluster_lseek,
1730 .sendfile_fn = vfs_gluster_sendfile,
1731 .recvfile_fn = vfs_gluster_recvfile,
1732 .rename_fn = vfs_gluster_rename,
1733 .fsync_fn = vfs_gluster_fsync,
1734 .fsync_send_fn = vfs_gluster_fsync_send,
1735 .fsync_recv_fn = vfs_gluster_fsync_recv,
1736
1737 .stat_fn = vfs_gluster_stat,
1738 .fstat_fn = vfs_gluster_fstat,
1739 .lstat_fn = vfs_gluster_lstat,
1740 .get_alloc_size_fn = vfs_gluster_get_alloc_size,
1741 .unlink_fn = vfs_gluster_unlink,
1742
1743 .chmod_fn = vfs_gluster_chmod,
1744 .fchmod_fn = vfs_gluster_fchmod,
1745 .chown_fn = vfs_gluster_chown,
1746 .fchown_fn = vfs_gluster_fchown,
1747 .lchown_fn = vfs_gluster_lchown,
1748 .chdir_fn = vfs_gluster_chdir,
1749 .getwd_fn = vfs_gluster_getwd,
1750 .ntimes_fn = vfs_gluster_ntimes,
1751 .ftruncate_fn = vfs_gluster_ftruncate,
1752 .fallocate_fn = vfs_gluster_fallocate,
1753 .lock_fn = vfs_gluster_lock,
1754 .kernel_flock_fn = vfs_gluster_kernel_flock,
1755 .linux_setlease_fn = vfs_gluster_linux_setlease,
1756 .getlock_fn = vfs_gluster_getlock,
1757 .symlink_fn = vfs_gluster_symlink,
1758 .readlink_fn = vfs_gluster_readlink,
1759 .link_fn = vfs_gluster_link,
1760 .mknod_fn = vfs_gluster_mknod,
1761 .realpath_fn = vfs_gluster_realpath,
1762 .notify_watch_fn = vfs_gluster_notify_watch,
1763 .chflags_fn = vfs_gluster_chflags,
1764 .file_id_create_fn = NULL,
1765 .copy_chunk_send_fn = NULL,
1766 .copy_chunk_recv_fn = NULL,
1767 .streaminfo_fn = NULL,
1768 .get_real_filename_fn = vfs_gluster_get_real_filename,
1769 .connectpath_fn = vfs_gluster_connectpath,
1770
1771 .brl_lock_windows_fn = NULL,
1772 .brl_unlock_windows_fn = NULL,
1773 .brl_cancel_windows_fn = NULL,
1774 .strict_lock_fn = NULL,
1775 .strict_unlock_fn = NULL,
1776 .translate_name_fn = NULL,
1777 .fsctl_fn = NULL,
1778
1779 /* NT ACL Operations */
1780 .fget_nt_acl_fn = NULL,
1781 .get_nt_acl_fn = NULL,
1782 .fset_nt_acl_fn = NULL,
1783 .audit_file_fn = NULL,
1784
1785 /* Posix ACL Operations */
1786 .chmod_acl_fn = NULL, /* passthrough to default */
1787 .fchmod_acl_fn = NULL, /* passthrough to default */
1788 .sys_acl_get_file_fn = vfs_gluster_sys_acl_get_file,
1789 .sys_acl_get_fd_fn = vfs_gluster_sys_acl_get_fd,
1790 .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
1791 .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
1792 .sys_acl_set_file_fn = vfs_gluster_sys_acl_set_file,
1793 .sys_acl_set_fd_fn = vfs_gluster_sys_acl_set_fd,
1794 .sys_acl_delete_def_file_fn = vfs_gluster_sys_acl_delete_def_file,
1795
1796 /* EA Operations */
1797 .getxattr_fn = vfs_gluster_getxattr,
1798 .fgetxattr_fn = vfs_gluster_fgetxattr,
1799 .listxattr_fn = vfs_gluster_listxattr,
1800 .flistxattr_fn = vfs_gluster_flistxattr,
1801 .removexattr_fn = vfs_gluster_removexattr,
1802 .fremovexattr_fn = vfs_gluster_fremovexattr,
1803 .setxattr_fn = vfs_gluster_setxattr,
1804 .fsetxattr_fn = vfs_gluster_fsetxattr,
1805
1806 /* AIO Operations */
1807 .aio_force_fn = vfs_gluster_aio_force,
1808
1809 /* Offline Operations */
1810 .is_offline_fn = vfs_gluster_is_offline,
1811 .set_offline_fn = vfs_gluster_set_offline,
1812
1813 /* Durable handle Operations */
1814 .durable_cookie_fn = NULL,
1815 .durable_disconnect_fn = NULL,
1816 .durable_reconnect_fn = NULL,
1817 };
1818
1819 NTSTATUS vfs_glusterfs_init(void);
1820 NTSTATUS vfs_glusterfs_init(void)
1821 {
1822 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1823 "glusterfs", &glusterfs_fns);
1824 }
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