source: vendor/current/source3/modules/vfs_glusterfs.c

Last change on this file was 989, checked in by Silvan Scherrer, 9 years ago

Samba Server: update vendor to version 4.4.7
File size: 43.4 KB
Line 
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 "smbd/globals.h"
45#include "lib/util/sys_rw.h"
46
47#define DEFAULT_VOLFILE_SERVER "localhost"
48
49static int read_fd = -1;
50static int write_fd = -1;
51static struct tevent_fd *aio_read_event = NULL;
52
53/**
54 * Helper to convert struct stat to struct stat_ex.
55 */
56static 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
84static 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
93static 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
125static 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
141static 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
160static 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 goto done;
226 }
227
228 ret = glfs_set_logging(fs, logfile, loglevel);
229 if (ret < 0) {
230 DEBUG(0, ("%s: Failed to set logfile %s loglevel %d\n",
231 volume, logfile, loglevel));
232 goto done;
233 }
234
235 ret = glfs_init(fs);
236 if (ret < 0) {
237 DEBUG(0, ("%s: Failed to initialize volume (%s)\n",
238 volume, strerror(errno)));
239 goto done;
240 }
241
242 ret = glfs_set_preopened(volume, handle->conn->connectpath, fs);
243 if (ret < 0) {
244 DEBUG(0, ("%s: Failed to register volume (%s)\n",
245 volume, strerror(errno)));
246 goto done;
247 }
248done:
249 talloc_free(tmp_ctx);
250 if (ret < 0) {
251 if (fs)
252 glfs_fini(fs);
253 return -1;
254 } else {
255 DEBUG(0, ("%s: Initialized volume from server %s\n",
256 volume, volfile_server));
257 handle->data = fs;
258 return 0;
259 }
260}
261
262static void vfs_gluster_disconnect(struct vfs_handle_struct *handle)
263{
264 glfs_t *fs = NULL;
265
266 fs = handle->data;
267
268 glfs_clear_preopened(fs);
269}
270
271static uint64_t vfs_gluster_disk_free(struct vfs_handle_struct *handle,
272 const char *path, uint64_t *bsize_p,
273 uint64_t *dfree_p, uint64_t *dsize_p)
274{
275 struct statvfs statvfs = { 0, };
276 int ret;
277
278 ret = glfs_statvfs(handle->data, path, &statvfs);
279 if (ret < 0) {
280 return -1;
281 }
282
283 if (bsize_p != NULL) {
284 *bsize_p = (uint64_t)statvfs.f_bsize; /* Block size */
285 }
286 if (dfree_p != NULL) {
287 *dfree_p = (uint64_t)statvfs.f_bavail; /* Available Block units */
288 }
289 if (dsize_p != NULL) {
290 *dsize_p = (uint64_t)statvfs.f_blocks; /* Total Block units */
291 }
292
293 return (uint64_t)statvfs.f_bavail;
294}
295
296static int vfs_gluster_get_quota(struct vfs_handle_struct *handle,
297 const char *path,
298 enum SMB_QUOTA_TYPE qtype, unid_t id,
299 SMB_DISK_QUOTA *qt)
300{
301 errno = ENOSYS;
302 return -1;
303}
304
305static int
306vfs_gluster_set_quota(struct vfs_handle_struct *handle,
307 enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
308{
309 errno = ENOSYS;
310 return -1;
311}
312
313static int vfs_gluster_statvfs(struct vfs_handle_struct *handle,
314 const char *path,
315 struct vfs_statvfs_struct *vfs_statvfs)
316{
317 struct statvfs statvfs = { 0, };
318 int ret;
319
320 ret = glfs_statvfs(handle->data, path, &statvfs);
321 if (ret < 0) {
322 DEBUG(0, ("glfs_statvfs(%s) failed: %s\n",
323 path, strerror(errno)));
324 return -1;
325 }
326
327 ZERO_STRUCTP(vfs_statvfs);
328
329 vfs_statvfs->OptimalTransferSize = statvfs.f_frsize;
330 vfs_statvfs->BlockSize = statvfs.f_bsize;
331 vfs_statvfs->TotalBlocks = statvfs.f_blocks;
332 vfs_statvfs->BlocksAvail = statvfs.f_bfree;
333 vfs_statvfs->UserBlocksAvail = statvfs.f_bavail;
334 vfs_statvfs->TotalFileNodes = statvfs.f_files;
335 vfs_statvfs->FreeFileNodes = statvfs.f_ffree;
336 vfs_statvfs->FsIdentifier = statvfs.f_fsid;
337 vfs_statvfs->FsCapabilities =
338 FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
339
340 return ret;
341}
342
343static uint32_t vfs_gluster_fs_capabilities(struct vfs_handle_struct *handle,
344 enum timestamp_set_resolution *p_ts_res)
345{
346 uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
347
348#ifdef STAT_HAVE_NSEC
349 *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
350#endif
351
352 return caps;
353}
354
355static DIR *vfs_gluster_opendir(struct vfs_handle_struct *handle,
356 const char *path, const char *mask,
357 uint32_t attributes)
358{
359 glfs_fd_t *fd;
360
361 fd = glfs_opendir(handle->data, path);
362 if (fd == NULL) {
363 DEBUG(0, ("glfs_opendir(%s) failed: %s\n",
364 path, strerror(errno)));
365 }
366
367 return (DIR *) fd;
368}
369
370static DIR *vfs_gluster_fdopendir(struct vfs_handle_struct *handle,
371 files_struct *fsp, const char *mask,
372 uint32_t attributes)
373{
374 return (DIR *) *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
375}
376
377static int vfs_gluster_closedir(struct vfs_handle_struct *handle, DIR *dirp)
378{
379 return glfs_closedir((void *)dirp);
380}
381
382static struct dirent *vfs_gluster_readdir(struct vfs_handle_struct *handle,
383 DIR *dirp, SMB_STRUCT_STAT *sbuf)
384{
385 static char direntbuf[512];
386 int ret;
387 struct stat stat;
388 struct dirent *dirent = 0;
389
390 if (sbuf != NULL) {
391 ret = glfs_readdirplus_r((void *)dirp, &stat, (void *)direntbuf,
392 &dirent);
393 } else {
394 ret = glfs_readdir_r((void *)dirp, (void *)direntbuf, &dirent);
395 }
396
397 if ((ret < 0) || (dirent == NULL)) {
398 return NULL;
399 }
400
401 if (sbuf != NULL) {
402 smb_stat_ex_from_stat(sbuf, &stat);
403 }
404
405 return dirent;
406}
407
408static long vfs_gluster_telldir(struct vfs_handle_struct *handle, DIR *dirp)
409{
410 return glfs_telldir((void *)dirp);
411}
412
413static void vfs_gluster_seekdir(struct vfs_handle_struct *handle, DIR *dirp,
414 long offset)
415{
416 glfs_seekdir((void *)dirp, offset);
417}
418
419static void vfs_gluster_rewinddir(struct vfs_handle_struct *handle, DIR *dirp)
420{
421 glfs_seekdir((void *)dirp, 0);
422}
423
424static void vfs_gluster_init_search_op(struct vfs_handle_struct *handle,
425 DIR *dirp)
426{
427 return;
428}
429
430static int vfs_gluster_mkdir(struct vfs_handle_struct *handle, const char *path,
431 mode_t mode)
432{
433 return glfs_mkdir(handle->data, path, mode);
434}
435
436static int vfs_gluster_rmdir(struct vfs_handle_struct *handle, const char *path)
437{
438 return glfs_rmdir(handle->data, path);
439}
440
441static int vfs_gluster_open(struct vfs_handle_struct *handle,
442 struct smb_filename *smb_fname, files_struct *fsp,
443 int flags, mode_t mode)
444{
445 glfs_fd_t *glfd;
446 glfs_fd_t **p_tmp;
447
448 if (flags & O_DIRECTORY) {
449 glfd = glfs_opendir(handle->data, smb_fname->base_name);
450 } else if (flags & O_CREAT) {
451 glfd = glfs_creat(handle->data, smb_fname->base_name, flags,
452 mode);
453 } else {
454 glfd = glfs_open(handle->data, smb_fname->base_name, flags);
455 }
456
457 if (glfd == NULL) {
458 return -1;
459 }
460 p_tmp = (glfs_fd_t **)VFS_ADD_FSP_EXTENSION(handle, fsp,
461 glfs_fd_t *, NULL);
462 *p_tmp = glfd;
463 /* An arbitrary value for error reporting, so you know its us. */
464 return 13371337;
465}
466
467static int vfs_gluster_close(struct vfs_handle_struct *handle,
468 files_struct *fsp)
469{
470 glfs_fd_t *glfd;
471 glfd = *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
472 VFS_REMOVE_FSP_EXTENSION(handle, fsp);
473 return glfs_close(glfd);
474}
475
476static ssize_t vfs_gluster_read(struct vfs_handle_struct *handle,
477 files_struct *fsp, void *data, size_t n)
478{
479 return glfs_read(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, 0);
480}
481
482static ssize_t vfs_gluster_pread(struct vfs_handle_struct *handle,
483 files_struct *fsp, void *data, size_t n,
484 off_t offset)
485{
486 return glfs_pread(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, offset, 0);
487}
488
489struct glusterfs_aio_state;
490
491struct glusterfs_aio_wrapper {
492 struct glusterfs_aio_state *state;
493};
494
495struct glusterfs_aio_state {
496 ssize_t ret;
497 int err;
498 struct tevent_req *req;
499 bool cancelled;
500};
501
502static int aio_wrapper_destructor(struct glusterfs_aio_wrapper *wrap)
503{
504 if (wrap->state != NULL) {
505 wrap->state->cancelled = true;
506 }
507
508 return 0;
509}
510
511/*
512 * This function is the callback that will be called on glusterfs
513 * threads once the async IO submitted is complete. To notify
514 * Samba of the completion we use a pipe based queue.
515 */
516static void aio_glusterfs_done(glfs_fd_t *fd, ssize_t ret, void *data)
517{
518 struct glusterfs_aio_state *state = NULL;
519 int sts = 0;
520
521 state = (struct glusterfs_aio_state *)data;
522
523 if (ret < 0) {
524 state->ret = -1;
525 state->err = errno;
526 } else {
527 state->ret = ret;
528 state->err = 0;
529 }
530
531 /*
532 * Write the state pointer to glusterfs_aio_state to the
533 * pipe, so we can call tevent_req_done() from the main thread,
534 * because tevent_req_done() is not designed to be executed in
535 * the multithread environment, so tevent_req_done() must be
536 * executed from the smbd main thread.
537 *
538 * write(2) on pipes with sizes under _POSIX_PIPE_BUF
539 * in size is atomic, without this, the use op pipes in this
540 * code would not work.
541 *
542 * sys_write is a thin enough wrapper around write(2)
543 * that we can trust it here.
544 */
545
546 sts = sys_write(write_fd, &state, sizeof(struct glusterfs_aio_state *));
547 if (sts < 0) {
548 DEBUG(0,("\nWrite to pipe failed (%s)", strerror(errno)));
549 }
550
551 return;
552}
553
554/*
555 * Read each req off the pipe and process it.
556 */
557static void aio_tevent_fd_done(struct tevent_context *event_ctx,
558 struct tevent_fd *fde,
559 uint16_t flags, void *data)
560{
561 struct tevent_req *req = NULL;
562 struct glusterfs_aio_state *state = NULL;
563 int sts = 0;
564
565 /*
566 * read(2) on pipes is atomic if the needed data is available
567 * in the pipe, per SUS and POSIX. Because we always write
568 * to the pipe in sizeof(struct tevent_req *) chunks, we can
569 * always read in those chunks, atomically.
570 *
571 * sys_read is a thin enough wrapper around read(2) that we
572 * can trust it here.
573 */
574
575 sts = sys_read(read_fd, &state, sizeof(struct glusterfs_aio_state *));
576
577 if (sts < 0) {
578 DEBUG(0,("\nRead from pipe failed (%s)", strerror(errno)));
579 }
580
581 /* if we've cancelled the op, there is no req, so just clean up. */
582 if (state->cancelled == true) {
583 TALLOC_FREE(state);
584 return;
585 }
586
587 req = state->req;
588
589 if (req) {
590 tevent_req_done(req);
591 }
592 return;
593}
594
595static bool init_gluster_aio(struct vfs_handle_struct *handle)
596{
597 int fds[2];
598 int ret = -1;
599
600 if (read_fd != -1) {
601 /*
602 * Already initialized.
603 */
604 return true;
605 }
606
607 ret = pipe(fds);
608 if (ret == -1) {
609 goto fail;
610 }
611
612 read_fd = fds[0];
613 write_fd = fds[1];
614
615 aio_read_event = tevent_add_fd(handle->conn->sconn->ev_ctx,
616 NULL,
617 read_fd,
618 TEVENT_FD_READ,
619 aio_tevent_fd_done,
620 NULL);
621 if (aio_read_event == NULL) {
622 goto fail;
623 }
624
625 return true;
626fail:
627 TALLOC_FREE(aio_read_event);
628 if (read_fd != -1) {
629 close(read_fd);
630 close(write_fd);
631 read_fd = -1;
632 write_fd = -1;
633 }
634 return false;
635}
636
637static struct glusterfs_aio_state *aio_state_create(TALLOC_CTX *mem_ctx)
638{
639 struct tevent_req *req = NULL;
640 struct glusterfs_aio_state *state = NULL;
641 struct glusterfs_aio_wrapper *wrapper = NULL;
642
643 req = tevent_req_create(mem_ctx, &wrapper, struct glusterfs_aio_wrapper);
644
645 if (req == NULL) {
646 return NULL;
647 }
648
649 state = talloc(NULL, struct glusterfs_aio_state);
650
651 if (state == NULL) {
652 TALLOC_FREE(req);
653 return NULL;
654 }
655
656 talloc_set_destructor(wrapper, aio_wrapper_destructor);
657 state->cancelled = false;
658 state->ret = 0;
659 state->err = 0;
660 state->req = req;
661
662 wrapper->state = state;
663
664 return state;
665}
666
667static struct tevent_req *vfs_gluster_pread_send(struct vfs_handle_struct
668 *handle, TALLOC_CTX *mem_ctx,
669 struct tevent_context *ev,
670 files_struct *fsp,
671 void *data, size_t n,
672 off_t offset)
673{
674 struct glusterfs_aio_state *state = NULL;
675 struct tevent_req *req = NULL;
676 int ret = 0;
677
678 state = aio_state_create(mem_ctx);
679
680 if (state == NULL) {
681 return NULL;
682 }
683
684 req = state->req;
685
686 if (!init_gluster_aio(handle)) {
687 tevent_req_error(req, EIO);
688 return tevent_req_post(req, ev);
689 }
690
691 ret = glfs_pread_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
692 fsp), data, n, offset, 0, aio_glusterfs_done,
693 state);
694 if (ret < 0) {
695 tevent_req_error(req, -ret);
696 return tevent_req_post(req, ev);
697 }
698
699 return req;
700}
701
702static struct tevent_req *vfs_gluster_pwrite_send(struct vfs_handle_struct
703 *handle, TALLOC_CTX *mem_ctx,
704 struct tevent_context *ev,
705 files_struct *fsp,
706 const void *data, size_t n,
707 off_t offset)
708{
709 struct glusterfs_aio_state *state = NULL;
710 struct tevent_req *req = NULL;
711 int ret = 0;
712
713 state = aio_state_create(mem_ctx);
714
715 if (state == NULL) {
716 return NULL;
717 }
718
719 req = state->req;
720
721 if (!init_gluster_aio(handle)) {
722 tevent_req_error(req, EIO);
723 return tevent_req_post(req, ev);
724 }
725
726 ret = glfs_pwrite_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
727 fsp), data, n, offset, 0, aio_glusterfs_done,
728 state);
729 if (ret < 0) {
730 tevent_req_error(req, -ret);
731 return tevent_req_post(req, ev);
732 }
733
734 return req;
735}
736
737static ssize_t vfs_gluster_recv(struct tevent_req *req, int *err)
738{
739 struct glusterfs_aio_wrapper *wrapper = NULL;
740 int ret = 0;
741
742 wrapper = tevent_req_data(req, struct glusterfs_aio_wrapper);
743
744 if (wrapper == NULL) {
745 return -1;
746 }
747
748 if (wrapper->state == NULL) {
749 return -1;
750 }
751
752 if (tevent_req_is_unix_error(req, err)) {
753 return -1;
754 }
755 if (wrapper->state->ret == -1) {
756 *err = wrapper->state->err;
757 }
758
759 ret = wrapper->state->ret;
760
761 /* Clean up the state, it is in a NULL context. */
762
763 TALLOC_FREE(wrapper->state);
764
765 return ret;
766}
767
768static ssize_t vfs_gluster_write(struct vfs_handle_struct *handle,
769 files_struct *fsp, const void *data, size_t n)
770{
771 return glfs_write(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, 0);
772}
773
774static ssize_t vfs_gluster_pwrite(struct vfs_handle_struct *handle,
775 files_struct *fsp, const void *data,
776 size_t n, off_t offset)
777{
778 return glfs_pwrite(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, offset, 0);
779}
780
781static off_t vfs_gluster_lseek(struct vfs_handle_struct *handle,
782 files_struct *fsp, off_t offset, int whence)
783{
784 return glfs_lseek(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), offset, whence);
785}
786
787static ssize_t vfs_gluster_sendfile(struct vfs_handle_struct *handle, int tofd,
788 files_struct *fromfsp,
789 const DATA_BLOB *hdr,
790 off_t offset, size_t n)
791{
792 errno = ENOTSUP;
793 return -1;
794}
795
796static ssize_t vfs_gluster_recvfile(struct vfs_handle_struct *handle,
797 int fromfd, files_struct *tofsp,
798 off_t offset, size_t n)
799{
800 errno = ENOTSUP;
801 return -1;
802}
803
804static int vfs_gluster_rename(struct vfs_handle_struct *handle,
805 const struct smb_filename *smb_fname_src,
806 const struct smb_filename *smb_fname_dst)
807{
808 return glfs_rename(handle->data, smb_fname_src->base_name,
809 smb_fname_dst->base_name);
810}
811
812static int vfs_gluster_fsync(struct vfs_handle_struct *handle,
813 files_struct *fsp)
814{
815 return glfs_fsync(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp));
816}
817
818static struct tevent_req *vfs_gluster_fsync_send(struct vfs_handle_struct
819 *handle, TALLOC_CTX *mem_ctx,
820 struct tevent_context *ev,
821 files_struct *fsp)
822{
823 struct tevent_req *req = NULL;
824 struct glusterfs_aio_state *state = NULL;
825 int ret = 0;
826
827 state = aio_state_create(mem_ctx);
828
829 if (state == NULL) {
830 return NULL;
831 }
832
833 req = state->req;
834
835 if (!init_gluster_aio(handle)) {
836 tevent_req_error(req, EIO);
837 return tevent_req_post(req, ev);
838 }
839 ret = glfs_fsync_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
840 fsp), aio_glusterfs_done, req);
841 if (ret < 0) {
842 tevent_req_error(req, -ret);
843 return tevent_req_post(req, ev);
844 }
845 return req;
846}
847
848static int vfs_gluster_fsync_recv(struct tevent_req *req, int *err)
849{
850 /*
851 * Use implicit conversion ssize_t->int
852 */
853 return vfs_gluster_recv(req, err);
854}
855
856static int vfs_gluster_stat(struct vfs_handle_struct *handle,
857 struct smb_filename *smb_fname)
858{
859 struct stat st;
860 int ret;
861
862 ret = glfs_stat(handle->data, smb_fname->base_name, &st);
863 if (ret == 0) {
864 smb_stat_ex_from_stat(&smb_fname->st, &st);
865 }
866 if (ret < 0 && errno != ENOENT) {
867 DEBUG(0, ("glfs_stat(%s) failed: %s\n",
868 smb_fname->base_name, strerror(errno)));
869 }
870 return ret;
871}
872
873static int vfs_gluster_fstat(struct vfs_handle_struct *handle,
874 files_struct *fsp, SMB_STRUCT_STAT *sbuf)
875{
876 struct stat st;
877 int ret;
878
879 ret = glfs_fstat(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), &st);
880 if (ret == 0) {
881 smb_stat_ex_from_stat(sbuf, &st);
882 }
883 if (ret < 0) {
884 DEBUG(0, ("glfs_fstat(%d) failed: %s\n",
885 fsp->fh->fd, strerror(errno)));
886 }
887 return ret;
888}
889
890static int vfs_gluster_lstat(struct vfs_handle_struct *handle,
891 struct smb_filename *smb_fname)
892{
893 struct stat st;
894 int ret;
895
896 ret = glfs_lstat(handle->data, smb_fname->base_name, &st);
897 if (ret == 0) {
898 smb_stat_ex_from_stat(&smb_fname->st, &st);
899 }
900 if (ret < 0 && errno != ENOENT) {
901 DEBUG(0, ("glfs_lstat(%s) failed: %s\n",
902 smb_fname->base_name, strerror(errno)));
903 }
904 return ret;
905}
906
907static uint64_t vfs_gluster_get_alloc_size(struct vfs_handle_struct *handle,
908 files_struct *fsp,
909 const SMB_STRUCT_STAT *sbuf)
910{
911 return sbuf->st_ex_blocks * 512;
912}
913
914static int vfs_gluster_unlink(struct vfs_handle_struct *handle,
915 const struct smb_filename *smb_fname)
916{
917 return glfs_unlink(handle->data, smb_fname->base_name);
918}
919
920static int vfs_gluster_chmod(struct vfs_handle_struct *handle,
921 const char *path, mode_t mode)
922{
923 return glfs_chmod(handle->data, path, mode);
924}
925
926static int vfs_gluster_fchmod(struct vfs_handle_struct *handle,
927 files_struct *fsp, mode_t mode)
928{
929 return glfs_fchmod(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), mode);
930}
931
932static int vfs_gluster_chown(struct vfs_handle_struct *handle,
933 const char *path, uid_t uid, gid_t gid)
934{
935 return glfs_chown(handle->data, path, uid, gid);
936}
937
938static int vfs_gluster_fchown(struct vfs_handle_struct *handle,
939 files_struct *fsp, uid_t uid, gid_t gid)
940{
941 return glfs_fchown(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), uid, gid);
942}
943
944static int vfs_gluster_lchown(struct vfs_handle_struct *handle,
945 const char *path, uid_t uid, gid_t gid)
946{
947 return glfs_lchown(handle->data, path, uid, gid);
948}
949
950static int vfs_gluster_chdir(struct vfs_handle_struct *handle, const char *path)
951{
952 return glfs_chdir(handle->data, path);
953}
954
955static char *vfs_gluster_getwd(struct vfs_handle_struct *handle)
956{
957 char *cwd;
958 char *ret;
959
960 cwd = SMB_CALLOC_ARRAY(char, PATH_MAX);
961 if (cwd == NULL) {
962 return NULL;
963 }
964
965 ret = glfs_getcwd(handle->data, cwd, PATH_MAX - 1);
966 if (ret == 0) {
967 free(cwd);
968 }
969 return ret;
970}
971
972static int vfs_gluster_ntimes(struct vfs_handle_struct *handle,
973 const struct smb_filename *smb_fname,
974 struct smb_file_time *ft)
975{
976 struct timespec times[2];
977
978 if (null_timespec(ft->atime)) {
979 times[0].tv_sec = smb_fname->st.st_ex_atime.tv_sec;
980 times[0].tv_nsec = smb_fname->st.st_ex_atime.tv_nsec;
981 } else {
982 times[0].tv_sec = ft->atime.tv_sec;
983 times[0].tv_nsec = ft->atime.tv_nsec;
984 }
985
986 if (null_timespec(ft->mtime)) {
987 times[1].tv_sec = smb_fname->st.st_ex_mtime.tv_sec;
988 times[1].tv_nsec = smb_fname->st.st_ex_mtime.tv_nsec;
989 } else {
990 times[1].tv_sec = ft->mtime.tv_sec;
991 times[1].tv_nsec = ft->mtime.tv_nsec;
992 }
993
994 if ((timespec_compare(&times[0],
995 &smb_fname->st.st_ex_atime) == 0) &&
996 (timespec_compare(&times[1],
997 &smb_fname->st.st_ex_mtime) == 0)) {
998 return 0;
999 }
1000
1001 return glfs_utimens(handle->data, smb_fname->base_name, times);
1002}
1003
1004static int vfs_gluster_ftruncate(struct vfs_handle_struct *handle,
1005 files_struct *fsp, off_t offset)
1006{
1007 return glfs_ftruncate(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), offset);
1008}
1009
1010static int vfs_gluster_fallocate(struct vfs_handle_struct *handle,
1011 struct files_struct *fsp,
1012 uint32_t mode,
1013 off_t offset, off_t len)
1014{
1015 /* TODO: add support using glfs_fallocate() and glfs_zerofill() */
1016 errno = ENOTSUP;
1017 return -1;
1018}
1019
1020static char *vfs_gluster_realpath(struct vfs_handle_struct *handle,
1021 const char *path)
1022{
1023 return glfs_realpath(handle->data, path, 0);
1024}
1025
1026static bool vfs_gluster_lock(struct vfs_handle_struct *handle,
1027 files_struct *fsp, int op, off_t offset,
1028 off_t count, int type)
1029{
1030 struct flock flock = { 0, };
1031 int ret;
1032
1033 flock.l_type = type;
1034 flock.l_whence = SEEK_SET;
1035 flock.l_start = offset;
1036 flock.l_len = count;
1037 flock.l_pid = 0;
1038
1039 ret = glfs_posix_lock(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), op, &flock);
1040
1041 if (op == F_GETLK) {
1042 /* lock query, true if someone else has locked */
1043 if ((ret != -1) &&
1044 (flock.l_type != F_UNLCK) &&
1045 (flock.l_pid != 0) && (flock.l_pid != getpid()))
1046 return true;
1047 /* not me */
1048 return false;
1049 }
1050
1051 if (ret == -1) {
1052 return false;
1053 }
1054
1055 return true;
1056}
1057
1058static int vfs_gluster_kernel_flock(struct vfs_handle_struct *handle,
1059 files_struct *fsp, uint32_t share_mode,
1060 uint32_t access_mask)
1061{
1062 errno = ENOSYS;
1063 return -1;
1064}
1065
1066static int vfs_gluster_linux_setlease(struct vfs_handle_struct *handle,
1067 files_struct *fsp, int leasetype)
1068{
1069 errno = ENOSYS;
1070 return -1;
1071}
1072
1073static bool vfs_gluster_getlock(struct vfs_handle_struct *handle,
1074 files_struct *fsp, off_t *poffset,
1075 off_t *pcount, int *ptype, pid_t *ppid)
1076{
1077 struct flock flock = { 0, };
1078 int ret;
1079
1080 flock.l_type = *ptype;
1081 flock.l_whence = SEEK_SET;
1082 flock.l_start = *poffset;
1083 flock.l_len = *pcount;
1084 flock.l_pid = 0;
1085
1086 ret = glfs_posix_lock(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), F_GETLK, &flock);
1087
1088 if (ret == -1) {
1089 return false;
1090 }
1091
1092 *ptype = flock.l_type;
1093 *poffset = flock.l_start;
1094 *pcount = flock.l_len;
1095 *ppid = flock.l_pid;
1096
1097 return true;
1098}
1099
1100static int vfs_gluster_symlink(struct vfs_handle_struct *handle,
1101 const char *oldpath, const char *newpath)
1102{
1103 return glfs_symlink(handle->data, oldpath, newpath);
1104}
1105
1106static int vfs_gluster_readlink(struct vfs_handle_struct *handle,
1107 const char *path, char *buf, size_t bufsiz)
1108{
1109 return glfs_readlink(handle->data, path, buf, bufsiz);
1110}
1111
1112static int vfs_gluster_link(struct vfs_handle_struct *handle,
1113 const char *oldpath, const char *newpath)
1114{
1115 return glfs_link(handle->data, oldpath, newpath);
1116}
1117
1118static int vfs_gluster_mknod(struct vfs_handle_struct *handle, const char *path,
1119 mode_t mode, SMB_DEV_T dev)
1120{
1121 return glfs_mknod(handle->data, path, mode, dev);
1122}
1123
1124static int vfs_gluster_chflags(struct vfs_handle_struct *handle,
1125 const char *path, unsigned int flags)
1126{
1127 errno = ENOSYS;
1128 return -1;
1129}
1130
1131static int vfs_gluster_get_real_filename(struct vfs_handle_struct *handle,
1132 const char *path, const char *name,
1133 TALLOC_CTX *mem_ctx, char **found_name)
1134{
1135 int ret;
1136 char key_buf[NAME_MAX + 64];
1137 char val_buf[NAME_MAX + 1];
1138
1139 if (strlen(name) >= NAME_MAX) {
1140 errno = ENAMETOOLONG;
1141 return -1;
1142 }
1143
1144 snprintf(key_buf, NAME_MAX + 64,
1145 "glusterfs.get_real_filename:%s", name);
1146
1147 ret = glfs_getxattr(handle->data, path, key_buf, val_buf, NAME_MAX + 1);
1148 if (ret == -1) {
1149 if (errno == ENODATA) {
1150 errno = EOPNOTSUPP;
1151 }
1152 return -1;
1153 }
1154
1155 *found_name = talloc_strdup(mem_ctx, val_buf);
1156 if (found_name[0] == NULL) {
1157 errno = ENOMEM;
1158 return -1;
1159 }
1160 return 0;
1161}
1162
1163static const char *vfs_gluster_connectpath(struct vfs_handle_struct *handle,
1164 const char *filename)
1165{
1166 return handle->conn->connectpath;
1167}
1168
1169/* EA Operations */
1170
1171static ssize_t vfs_gluster_getxattr(struct vfs_handle_struct *handle,
1172 const char *path, const char *name,
1173 void *value, size_t size)
1174{
1175 return glfs_getxattr(handle->data, path, name, value, size);
1176}
1177
1178static ssize_t vfs_gluster_fgetxattr(struct vfs_handle_struct *handle,
1179 files_struct *fsp, const char *name,
1180 void *value, size_t size)
1181{
1182 return glfs_fgetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name, value, size);
1183}
1184
1185static ssize_t vfs_gluster_listxattr(struct vfs_handle_struct *handle,
1186 const char *path, char *list, size_t size)
1187{
1188 return glfs_listxattr(handle->data, path, list, size);
1189}
1190
1191static ssize_t vfs_gluster_flistxattr(struct vfs_handle_struct *handle,
1192 files_struct *fsp, char *list,
1193 size_t size)
1194{
1195 return glfs_flistxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), list, size);
1196}
1197
1198static int vfs_gluster_removexattr(struct vfs_handle_struct *handle,
1199 const char *path, const char *name)
1200{
1201 return glfs_removexattr(handle->data, path, name);
1202}
1203
1204static int vfs_gluster_fremovexattr(struct vfs_handle_struct *handle,
1205 files_struct *fsp, const char *name)
1206{
1207 return glfs_fremovexattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name);
1208}
1209
1210static int vfs_gluster_setxattr(struct vfs_handle_struct *handle,
1211 const char *path, const char *name,
1212 const void *value, size_t size, int flags)
1213{
1214 return glfs_setxattr(handle->data, path, name, value, size, flags);
1215}
1216
1217static int vfs_gluster_fsetxattr(struct vfs_handle_struct *handle,
1218 files_struct *fsp, const char *name,
1219 const void *value, size_t size, int flags)
1220{
1221 return glfs_fsetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name, value, size,
1222 flags);
1223}
1224
1225/* AIO Operations */
1226
1227static bool vfs_gluster_aio_force(struct vfs_handle_struct *handle,
1228 files_struct *fsp)
1229{
1230 return false;
1231}
1232
1233/* Offline Operations */
1234
1235static bool vfs_gluster_is_offline(struct vfs_handle_struct *handle,
1236 const struct smb_filename *fname,
1237 SMB_STRUCT_STAT *sbuf)
1238{
1239 return false;
1240}
1241
1242static int vfs_gluster_set_offline(struct vfs_handle_struct *handle,
1243 const struct smb_filename *fname)
1244{
1245 errno = ENOTSUP;
1246 return -1;
1247}
1248
1249/*
1250 Gluster ACL Format:
1251
1252 Size = 4 (header) + N * 8 (entry)
1253
1254 Offset Size Field (Little Endian)
1255 -------------------------------------
1256 0-3 4-byte Version
1257
1258 4-5 2-byte Entry-1 tag
1259 6-7 2-byte Entry-1 perm
1260 8-11 4-byte Entry-1 id
1261
1262 12-13 2-byte Entry-2 tag
1263 14-15 2-byte Entry-2 perm
1264 16-19 4-byte Entry-2 id
1265
1266 ...
1267
1268 */
1269
1270/* header version */
1271#define GLUSTER_ACL_VERSION 2
1272
1273/* perm bits */
1274#define GLUSTER_ACL_READ 0x04
1275#define GLUSTER_ACL_WRITE 0x02
1276#define GLUSTER_ACL_EXECUTE 0x01
1277
1278/* tag values */
1279#define GLUSTER_ACL_UNDEFINED_TAG 0x00
1280#define GLUSTER_ACL_USER_OBJ 0x01
1281#define GLUSTER_ACL_USER 0x02
1282#define GLUSTER_ACL_GROUP_OBJ 0x04
1283#define GLUSTER_ACL_GROUP 0x08
1284#define GLUSTER_ACL_MASK 0x10
1285#define GLUSTER_ACL_OTHER 0x20
1286
1287#define GLUSTER_ACL_UNDEFINED_ID (-1)
1288
1289#define GLUSTER_ACL_HEADER_SIZE 4
1290#define GLUSTER_ACL_ENTRY_SIZE 8
1291
1292#define GLUSTER_ACL_SIZE(n) (GLUSTER_ACL_HEADER_SIZE + (n * GLUSTER_ACL_ENTRY_SIZE))
1293
1294static SMB_ACL_T mode_to_smb_acls(const struct stat *mode, TALLOC_CTX *mem_ctx)
1295{
1296 struct smb_acl_t *result;
1297 int count;
1298
1299 count = 3;
1300 result = sys_acl_init(mem_ctx);
1301 if (!result) {
1302 errno = ENOMEM;
1303 return NULL;
1304 }
1305
1306 result->acl = talloc_array(result, struct smb_acl_entry, count);
1307 if (!result->acl) {
1308 errno = ENOMEM;
1309 talloc_free(result);
1310 return NULL;
1311 }
1312
1313 result->count = count;
1314
1315 result->acl[0].a_type = SMB_ACL_USER_OBJ;
1316 result->acl[0].a_perm = (mode->st_mode & S_IRWXU) >> 6;;
1317
1318 result->acl[1].a_type = SMB_ACL_GROUP_OBJ;
1319 result->acl[1].a_perm = (mode->st_mode & S_IRWXG) >> 3;;
1320
1321 result->acl[2].a_type = SMB_ACL_OTHER;
1322 result->acl[2].a_perm = mode->st_mode & S_IRWXO;;
1323
1324 return result;
1325}
1326
1327static SMB_ACL_T gluster_to_smb_acl(const char *buf, size_t xattr_size,
1328 TALLOC_CTX *mem_ctx)
1329{
1330 int count;
1331 size_t size;
1332 struct smb_acl_entry *smb_ace;
1333 struct smb_acl_t *result;
1334 int i;
1335 int offset;
1336 uint16_t tag;
1337 uint16_t perm;
1338 uint32_t id;
1339
1340 size = xattr_size;
1341
1342 if (size < GLUSTER_ACL_HEADER_SIZE) {
1343 /* ACL should be at least as big as the header (4 bytes) */
1344 errno = EINVAL;
1345 return NULL;
1346 }
1347
1348 size -= GLUSTER_ACL_HEADER_SIZE; /* size of header = 4 bytes */
1349
1350 if (size % GLUSTER_ACL_ENTRY_SIZE) {
1351 /* Size of entries must strictly be a multiple of
1352 size of an ACE (8 bytes)
1353 */
1354 errno = EINVAL;
1355 return NULL;
1356 }
1357
1358 count = size / GLUSTER_ACL_ENTRY_SIZE;
1359
1360 /* Version is the first 4 bytes of the ACL */
1361 if (IVAL(buf, 0) != GLUSTER_ACL_VERSION) {
1362 DEBUG(0, ("Unknown gluster ACL version: %d\n",
1363 IVAL(buf, 0)));
1364 return NULL;
1365 }
1366 offset = GLUSTER_ACL_HEADER_SIZE;
1367
1368 result = sys_acl_init(mem_ctx);
1369 if (!result) {
1370 errno = ENOMEM;
1371 return NULL;
1372 }
1373
1374 result->acl = talloc_array(result, struct smb_acl_entry, count);
1375 if (!result->acl) {
1376 errno = ENOMEM;
1377 talloc_free(result);
1378 return NULL;
1379 }
1380
1381 result->count = count;
1382
1383 smb_ace = result->acl;
1384
1385 for (i = 0; i < count; i++) {
1386 /* TAG is the first 2 bytes of an entry */
1387 tag = SVAL(buf, offset);
1388 offset += 2;
1389
1390 /* PERM is the next 2 bytes of an entry */
1391 perm = SVAL(buf, offset);
1392 offset += 2;
1393
1394 /* ID is the last 4 bytes of an entry */
1395 id = IVAL(buf, offset);
1396 offset += 4;
1397
1398 switch(tag) {
1399 case GLUSTER_ACL_USER:
1400 smb_ace->a_type = SMB_ACL_USER;
1401 break;
1402 case GLUSTER_ACL_USER_OBJ:
1403 smb_ace->a_type = SMB_ACL_USER_OBJ;
1404 break;
1405 case GLUSTER_ACL_GROUP:
1406 smb_ace->a_type = SMB_ACL_GROUP;
1407 break;
1408 case GLUSTER_ACL_GROUP_OBJ:
1409 smb_ace->a_type = SMB_ACL_GROUP_OBJ;
1410 break;
1411 case GLUSTER_ACL_OTHER:
1412 smb_ace->a_type = SMB_ACL_OTHER;
1413 break;
1414 case GLUSTER_ACL_MASK:
1415 smb_ace->a_type = SMB_ACL_MASK;
1416 break;
1417 default:
1418 DEBUG(0, ("unknown tag type %d\n", (unsigned int) tag));
1419 return NULL;
1420 }
1421
1422
1423 switch(smb_ace->a_type) {
1424 case SMB_ACL_USER:
1425 smb_ace->info.user.uid = id;
1426 break;
1427 case SMB_ACL_GROUP:
1428 smb_ace->info.group.gid = id;
1429 break;
1430 default:
1431 break;
1432 }
1433
1434 smb_ace->a_perm = 0;
1435 smb_ace->a_perm |=
1436 ((perm & GLUSTER_ACL_READ) ? SMB_ACL_READ : 0);
1437 smb_ace->a_perm |=
1438 ((perm & GLUSTER_ACL_WRITE) ? SMB_ACL_WRITE : 0);
1439 smb_ace->a_perm |=
1440 ((perm & GLUSTER_ACL_EXECUTE) ? SMB_ACL_EXECUTE : 0);
1441
1442 smb_ace++;
1443 }
1444
1445 return result;
1446}
1447
1448
1449static int gluster_ace_cmp(const void *left, const void *right)
1450{
1451 int ret = 0;
1452 uint16_t tag_left, tag_right;
1453 uint32_t id_left, id_right;
1454
1455 /*
1456 Sorting precedence:
1457
1458 - Smaller TAG values must be earlier.
1459
1460 - Within same TAG, smaller identifiers must be earlier, E.g:
1461 UID 0 entry must be earlier than UID 200
1462 GID 17 entry must be earlier than GID 19
1463 */
1464
1465 /* TAG is the first element in the entry */
1466 tag_left = SVAL(left, 0);
1467 tag_right = SVAL(right, 0);
1468
1469 ret = (tag_left - tag_right);
1470 if (!ret) {
1471 /* ID is the third element in the entry, after two short
1472 integers (tag and perm), i.e at offset 4.
1473 */
1474 id_left = IVAL(left, 4);
1475 id_right = IVAL(right, 4);
1476 ret = id_left - id_right;
1477 }
1478
1479 return ret;
1480}
1481
1482
1483static ssize_t smb_to_gluster_acl(SMB_ACL_T theacl, char *buf, size_t len)
1484{
1485 ssize_t size;
1486 struct smb_acl_entry *smb_ace;
1487 int i;
1488 int count;
1489 uint16_t tag;
1490 uint16_t perm;
1491 uint32_t id;
1492 int offset;
1493
1494 count = theacl->count;
1495
1496 size = GLUSTER_ACL_HEADER_SIZE + (count * GLUSTER_ACL_ENTRY_SIZE);
1497 if (!buf) {
1498 return size;
1499 }
1500
1501 if (len < size) {
1502 errno = ERANGE;
1503 return -1;
1504 }
1505
1506 smb_ace = theacl->acl;
1507
1508 /* Version is the first 4 bytes of the ACL */
1509 SIVAL(buf, 0, GLUSTER_ACL_VERSION);
1510 offset = GLUSTER_ACL_HEADER_SIZE;
1511
1512 for (i = 0; i < count; i++) {
1513 /* Calculate tag */
1514 switch(smb_ace->a_type) {
1515 case SMB_ACL_USER:
1516 tag = GLUSTER_ACL_USER;
1517 break;
1518 case SMB_ACL_USER_OBJ:
1519 tag = GLUSTER_ACL_USER_OBJ;
1520 break;
1521 case SMB_ACL_GROUP:
1522 tag = GLUSTER_ACL_GROUP;
1523 break;
1524 case SMB_ACL_GROUP_OBJ:
1525 tag = GLUSTER_ACL_GROUP_OBJ;
1526 break;
1527 case SMB_ACL_OTHER:
1528 tag = GLUSTER_ACL_OTHER;
1529 break;
1530 case SMB_ACL_MASK:
1531 tag = GLUSTER_ACL_MASK;
1532 break;
1533 default:
1534 DEBUG(0, ("Unknown tag value %d\n",
1535 smb_ace->a_type));
1536 errno = EINVAL;
1537 return -1;
1538 }
1539
1540
1541 /* Calculate id */
1542 switch(smb_ace->a_type) {
1543 case SMB_ACL_USER:
1544 id = smb_ace->info.user.uid;
1545 break;
1546 case SMB_ACL_GROUP:
1547 id = smb_ace->info.group.gid;
1548 break;
1549 default:
1550 id = GLUSTER_ACL_UNDEFINED_ID;
1551 break;
1552 }
1553
1554 /* Calculate perm */
1555 perm = 0;
1556
1557 perm |=
1558 ((smb_ace->a_perm & SMB_ACL_READ) ? GLUSTER_ACL_READ : 0);
1559 perm |=
1560 ((smb_ace->a_perm & SMB_ACL_WRITE) ? GLUSTER_ACL_WRITE : 0);
1561 perm |=
1562 ((smb_ace->a_perm & SMB_ACL_EXECUTE) ? GLUSTER_ACL_EXECUTE : 0);
1563
1564
1565 /* TAG is the first 2 bytes of an entry */
1566 SSVAL(buf, offset, tag);
1567 offset += 2;
1568
1569 /* PERM is the next 2 bytes of an entry */
1570 SSVAL(buf, offset, perm);
1571 offset += 2;
1572
1573 /* ID is the last 4 bytes of an entry */
1574 SIVAL(buf, offset, id);
1575 offset += 4;
1576
1577 smb_ace++;
1578 }
1579
1580 /* Skip the header, sort @count number of 8-byte entries */
1581 qsort(buf+GLUSTER_ACL_HEADER_SIZE, count, GLUSTER_ACL_ENTRY_SIZE,
1582 gluster_ace_cmp);
1583
1584 return size;
1585}
1586
1587
1588static SMB_ACL_T vfs_gluster_sys_acl_get_file(struct vfs_handle_struct *handle,
1589 const char *path_p,
1590 SMB_ACL_TYPE_T type,
1591 TALLOC_CTX *mem_ctx)
1592{
1593 struct smb_acl_t *result;
1594 struct stat st;
1595 char *buf;
1596 const char *key;
1597 ssize_t ret, size = GLUSTER_ACL_SIZE(20);
1598
1599 switch (type) {
1600 case SMB_ACL_TYPE_ACCESS:
1601 key = "system.posix_acl_access";
1602 break;
1603 case SMB_ACL_TYPE_DEFAULT:
1604 key = "system.posix_acl_default";
1605 break;
1606 default:
1607 errno = EINVAL;
1608 return NULL;
1609 }
1610
1611 buf = alloca(size);
1612 if (!buf) {
1613 return NULL;
1614 }
1615
1616 ret = glfs_getxattr(handle->data, path_p, key, buf, size);
1617 if (ret == -1 && errno == ERANGE) {
1618 ret = glfs_getxattr(handle->data, path_p, key, 0, 0);
1619 if (ret > 0) {
1620 buf = alloca(ret);
1621 if (!buf) {
1622 return NULL;
1623 }
1624 ret = glfs_getxattr(handle->data, path_p, key, buf, ret);
1625 }
1626 }
1627
1628 /* retrieving the ACL from the xattr has finally failed, do a
1629 * mode-to-acl mapping */
1630
1631 if (ret == -1 && errno == ENODATA) {
1632 ret = glfs_stat(handle->data, path_p, &st);
1633 if (ret == 0) {
1634 result = mode_to_smb_acls(&st, mem_ctx);
1635 return result;
1636 }
1637 }
1638
1639 if (ret <= 0) {
1640 return NULL;
1641 }
1642
1643 result = gluster_to_smb_acl(buf, ret, mem_ctx);
1644
1645 return result;
1646}
1647
1648static SMB_ACL_T vfs_gluster_sys_acl_get_fd(struct vfs_handle_struct *handle,
1649 struct files_struct *fsp,
1650 TALLOC_CTX *mem_ctx)
1651{
1652 struct smb_acl_t *result;
1653 struct stat st;
1654 ssize_t ret, size = GLUSTER_ACL_SIZE(20);
1655 char *buf;
1656 glfs_fd_t *glfd;
1657
1658 glfd = *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
1659
1660 buf = alloca(size);
1661 if (!buf) {
1662 return NULL;
1663 }
1664
1665 ret = glfs_fgetxattr(glfd, "system.posix_acl_access", buf, size);
1666 if (ret == -1 && errno == ERANGE) {
1667 ret = glfs_fgetxattr(glfd, "system.posix_acl_access", 0, 0);
1668 if (ret > 0) {
1669 buf = alloca(ret);
1670 if (!buf) {
1671 return NULL;
1672 }
1673 ret = glfs_fgetxattr(glfd, "system.posix_acl_access",
1674 buf, ret);
1675 }
1676 }
1677
1678 /* retrieving the ACL from the xattr has finally failed, do a
1679 * mode-to-acl mapping */
1680
1681 if (ret == -1 && errno == ENODATA) {
1682 ret = glfs_fstat(glfd, &st);
1683 if (ret == 0) {
1684 result = mode_to_smb_acls(&st, mem_ctx);
1685 return result;
1686 }
1687 }
1688
1689 if (ret <= 0) {
1690 return NULL;
1691 }
1692
1693 result = gluster_to_smb_acl(buf, ret, mem_ctx);
1694
1695 return result;
1696}
1697
1698static int vfs_gluster_sys_acl_set_file(struct vfs_handle_struct *handle,
1699 const char *name,
1700 SMB_ACL_TYPE_T acltype,
1701 SMB_ACL_T theacl)
1702{
1703 int ret;
1704 const char *key;
1705 char *buf;
1706 ssize_t size;
1707
1708 switch (acltype) {
1709 case SMB_ACL_TYPE_ACCESS:
1710 key = "system.posix_acl_access";
1711 break;
1712 case SMB_ACL_TYPE_DEFAULT:
1713 key = "system.posix_acl_default";
1714 break;
1715 default:
1716 errno = EINVAL;
1717 return -1;
1718 }
1719
1720 size = smb_to_gluster_acl(theacl, 0, 0);
1721 buf = alloca(size);
1722
1723 size = smb_to_gluster_acl(theacl, buf, size);
1724 if (size == -1) {
1725 return -1;
1726 }
1727
1728 ret = glfs_setxattr(handle->data, name, key, buf, size, 0);
1729
1730 return ret;
1731}
1732
1733static int vfs_gluster_sys_acl_set_fd(struct vfs_handle_struct *handle,
1734 struct files_struct *fsp,
1735 SMB_ACL_T theacl)
1736{
1737 int ret;
1738 char *buf;
1739 ssize_t size;
1740
1741 size = smb_to_gluster_acl(theacl, 0, 0);
1742 buf = alloca(size);
1743
1744 size = smb_to_gluster_acl(theacl, buf, size);
1745 if (size == -1) {
1746 return -1;
1747 }
1748
1749 ret = glfs_fsetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp),
1750 "system.posix_acl_access", buf, size, 0);
1751 return ret;
1752}
1753
1754static int vfs_gluster_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
1755 const char *path)
1756{
1757 return glfs_removexattr(handle->data, path, "system.posix_acl_default");
1758}
1759
1760static struct vfs_fn_pointers glusterfs_fns = {
1761
1762 /* Disk Operations */
1763
1764 .connect_fn = vfs_gluster_connect,
1765 .disconnect_fn = vfs_gluster_disconnect,
1766 .disk_free_fn = vfs_gluster_disk_free,
1767 .get_quota_fn = vfs_gluster_get_quota,
1768 .set_quota_fn = vfs_gluster_set_quota,
1769 .statvfs_fn = vfs_gluster_statvfs,
1770 .fs_capabilities_fn = vfs_gluster_fs_capabilities,
1771
1772 .get_dfs_referrals_fn = NULL,
1773
1774 /* Directory Operations */
1775
1776 .opendir_fn = vfs_gluster_opendir,
1777 .fdopendir_fn = vfs_gluster_fdopendir,
1778 .readdir_fn = vfs_gluster_readdir,
1779 .seekdir_fn = vfs_gluster_seekdir,
1780 .telldir_fn = vfs_gluster_telldir,
1781 .rewind_dir_fn = vfs_gluster_rewinddir,
1782 .mkdir_fn = vfs_gluster_mkdir,
1783 .rmdir_fn = vfs_gluster_rmdir,
1784 .closedir_fn = vfs_gluster_closedir,
1785 .init_search_op_fn = vfs_gluster_init_search_op,
1786
1787 /* File Operations */
1788
1789 .open_fn = vfs_gluster_open,
1790 .create_file_fn = NULL,
1791 .close_fn = vfs_gluster_close,
1792 .read_fn = vfs_gluster_read,
1793 .pread_fn = vfs_gluster_pread,
1794 .pread_send_fn = vfs_gluster_pread_send,
1795 .pread_recv_fn = vfs_gluster_recv,
1796 .write_fn = vfs_gluster_write,
1797 .pwrite_fn = vfs_gluster_pwrite,
1798 .pwrite_send_fn = vfs_gluster_pwrite_send,
1799 .pwrite_recv_fn = vfs_gluster_recv,
1800 .lseek_fn = vfs_gluster_lseek,
1801 .sendfile_fn = vfs_gluster_sendfile,
1802 .recvfile_fn = vfs_gluster_recvfile,
1803 .rename_fn = vfs_gluster_rename,
1804 .fsync_fn = vfs_gluster_fsync,
1805 .fsync_send_fn = vfs_gluster_fsync_send,
1806 .fsync_recv_fn = vfs_gluster_fsync_recv,
1807
1808 .stat_fn = vfs_gluster_stat,
1809 .fstat_fn = vfs_gluster_fstat,
1810 .lstat_fn = vfs_gluster_lstat,
1811 .get_alloc_size_fn = vfs_gluster_get_alloc_size,
1812 .unlink_fn = vfs_gluster_unlink,
1813
1814 .chmod_fn = vfs_gluster_chmod,
1815 .fchmod_fn = vfs_gluster_fchmod,
1816 .chown_fn = vfs_gluster_chown,
1817 .fchown_fn = vfs_gluster_fchown,
1818 .lchown_fn = vfs_gluster_lchown,
1819 .chdir_fn = vfs_gluster_chdir,
1820 .getwd_fn = vfs_gluster_getwd,
1821 .ntimes_fn = vfs_gluster_ntimes,
1822 .ftruncate_fn = vfs_gluster_ftruncate,
1823 .fallocate_fn = vfs_gluster_fallocate,
1824 .lock_fn = vfs_gluster_lock,
1825 .kernel_flock_fn = vfs_gluster_kernel_flock,
1826 .linux_setlease_fn = vfs_gluster_linux_setlease,
1827 .getlock_fn = vfs_gluster_getlock,
1828 .symlink_fn = vfs_gluster_symlink,
1829 .readlink_fn = vfs_gluster_readlink,
1830 .link_fn = vfs_gluster_link,
1831 .mknod_fn = vfs_gluster_mknod,
1832 .realpath_fn = vfs_gluster_realpath,
1833 .chflags_fn = vfs_gluster_chflags,
1834 .file_id_create_fn = NULL,
1835 .copy_chunk_send_fn = NULL,
1836 .copy_chunk_recv_fn = NULL,
1837 .streaminfo_fn = NULL,
1838 .get_real_filename_fn = vfs_gluster_get_real_filename,
1839 .connectpath_fn = vfs_gluster_connectpath,
1840
1841 .brl_lock_windows_fn = NULL,
1842 .brl_unlock_windows_fn = NULL,
1843 .brl_cancel_windows_fn = NULL,
1844 .strict_lock_fn = NULL,
1845 .strict_unlock_fn = NULL,
1846 .translate_name_fn = NULL,
1847 .fsctl_fn = NULL,
1848
1849 /* NT ACL Operations */
1850 .fget_nt_acl_fn = NULL,
1851 .get_nt_acl_fn = NULL,
1852 .fset_nt_acl_fn = NULL,
1853 .audit_file_fn = NULL,
1854
1855 /* Posix ACL Operations */
1856 .chmod_acl_fn = NULL, /* passthrough to default */
1857 .fchmod_acl_fn = NULL, /* passthrough to default */
1858 .sys_acl_get_file_fn = vfs_gluster_sys_acl_get_file,
1859 .sys_acl_get_fd_fn = vfs_gluster_sys_acl_get_fd,
1860 .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
1861 .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
1862 .sys_acl_set_file_fn = vfs_gluster_sys_acl_set_file,
1863 .sys_acl_set_fd_fn = vfs_gluster_sys_acl_set_fd,
1864 .sys_acl_delete_def_file_fn = vfs_gluster_sys_acl_delete_def_file,
1865
1866 /* EA Operations */
1867 .getxattr_fn = vfs_gluster_getxattr,
1868 .fgetxattr_fn = vfs_gluster_fgetxattr,
1869 .listxattr_fn = vfs_gluster_listxattr,
1870 .flistxattr_fn = vfs_gluster_flistxattr,
1871 .removexattr_fn = vfs_gluster_removexattr,
1872 .fremovexattr_fn = vfs_gluster_fremovexattr,
1873 .setxattr_fn = vfs_gluster_setxattr,
1874 .fsetxattr_fn = vfs_gluster_fsetxattr,
1875
1876 /* AIO Operations */
1877 .aio_force_fn = vfs_gluster_aio_force,
1878
1879 /* Offline Operations */
1880 .is_offline_fn = vfs_gluster_is_offline,
1881 .set_offline_fn = vfs_gluster_set_offline,
1882
1883 /* Durable handle Operations */
1884 .durable_cookie_fn = NULL,
1885 .durable_disconnect_fn = NULL,
1886 .durable_reconnect_fn = NULL,
1887};
1888
1889NTSTATUS vfs_glusterfs_init(void);
1890NTSTATUS vfs_glusterfs_init(void)
1891{
1892 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1893 "glusterfs", &glusterfs_fns);
1894}
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