vfs_glusterfs: remove init_search_op handling
[nivanova/samba-autobuild/.git] / source3 / modules / vfs_glusterfs.c
1 /*
2    Unix SMB/CIFS implementation.
3
4    Wrap GlusterFS GFAPI calls in vfs functions.
5
6    Copyright (c) 2013 Anand Avati <avati@redhat.com>
7
8    This program is free software; you can redistribute it and/or modify
9    it under the terms of the GNU General Public License as published by
10    the Free Software Foundation; either version 3 of the License, or
11    (at your option) any later version.
12
13    This program is distributed in the hope that it will be useful,
14    but WITHOUT ANY WARRANTY; without even the implied warranty of
15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16    GNU General Public License for more details.
17
18    You should have received a copy of the GNU General Public License
19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
20 */
21
22 /**
23  * @file   vfs_glusterfs.c
24  * @author Anand Avati <avati@redhat.com>
25  * @date   May 2013
26  * @brief  Samba VFS module for glusterfs
27  *
28  * @todo
29  *   - sendfile/recvfile support
30  *
31  * A Samba VFS module for GlusterFS, based on Gluster's libgfapi.
32  * This is a "bottom" vfs module (not something to be stacked on top of
33  * another module), and translates (most) calls to the closest actions
34  * available in libgfapi.
35  *
36  */
37
38 #include "includes.h"
39 #include "smbd/smbd.h"
40 #include <stdio.h>
41 #include <glusterfs/api/glfs.h>
42 #include "lib/util/dlinklist.h"
43 #include "lib/util/tevent_unix.h"
44 #include "smbd/globals.h"
45 #include "lib/util/sys_rw.h"
46 #include "smbprofile.h"
47 #include "modules/posixacl_xattr.h"
48
49 #define DEFAULT_VOLFILE_SERVER "localhost"
50
51 static int read_fd = -1;
52 static int write_fd = -1;
53 static struct tevent_fd *aio_read_event = NULL;
54
55 /**
56  * Helper to convert struct stat to struct stat_ex.
57  */
58 static void smb_stat_ex_from_stat(struct stat_ex *dst, const struct stat *src)
59 {
60         ZERO_STRUCTP(dst);
61
62         dst->st_ex_dev = src->st_dev;
63         dst->st_ex_ino = src->st_ino;
64         dst->st_ex_mode = src->st_mode;
65         dst->st_ex_nlink = src->st_nlink;
66         dst->st_ex_uid = src->st_uid;
67         dst->st_ex_gid = src->st_gid;
68         dst->st_ex_rdev = src->st_rdev;
69         dst->st_ex_size = src->st_size;
70         dst->st_ex_atime.tv_sec = src->st_atime;
71         dst->st_ex_mtime.tv_sec = src->st_mtime;
72         dst->st_ex_ctime.tv_sec = src->st_ctime;
73         dst->st_ex_btime.tv_sec = src->st_mtime;
74         dst->st_ex_blksize = src->st_blksize;
75         dst->st_ex_blocks = src->st_blocks;
76 #ifdef STAT_HAVE_NSEC
77         dst->st_ex_atime.tv_nsec = src->st_atime_nsec;
78         dst->st_ex_mtime.tv_nsec = src->st_mtime_nsec;
79         dst->st_ex_ctime.tv_nsec = src->st_ctime_nsec;
80         dst->st_ex_btime.tv_nsec = src->st_mtime_nsec;
81 #endif
82 }
83
84 /* pre-opened glfs_t */
85
86 static struct glfs_preopened {
87         char *volume;
88         char *connectpath;
89         glfs_t *fs;
90         int ref;
91         struct glfs_preopened *next, *prev;
92 } *glfs_preopened;
93
94
95 static int glfs_set_preopened(const char *volume, const char *connectpath, glfs_t *fs)
96 {
97         struct glfs_preopened *entry = NULL;
98
99         entry = talloc_zero(NULL, struct glfs_preopened);
100         if (!entry) {
101                 errno = ENOMEM;
102                 return -1;
103         }
104
105         entry->volume = talloc_strdup(entry, volume);
106         if (!entry->volume) {
107                 talloc_free(entry);
108                 errno = ENOMEM;
109                 return -1;
110         }
111
112         entry->connectpath = talloc_strdup(entry, connectpath);
113         if (entry->connectpath == NULL) {
114                 talloc_free(entry);
115                 errno = ENOMEM;
116                 return -1;
117         }
118
119         entry->fs = fs;
120         entry->ref = 1;
121
122         DLIST_ADD(glfs_preopened, entry);
123
124         return 0;
125 }
126
127 static glfs_t *glfs_find_preopened(const char *volume, const char *connectpath)
128 {
129         struct glfs_preopened *entry = NULL;
130
131         for (entry = glfs_preopened; entry; entry = entry->next) {
132                 if (strcmp(entry->volume, volume) == 0 &&
133                     strcmp(entry->connectpath, connectpath) == 0)
134                 {
135                         entry->ref++;
136                         return entry->fs;
137                 }
138         }
139
140         return NULL;
141 }
142
143 static void glfs_clear_preopened(glfs_t *fs)
144 {
145         struct glfs_preopened *entry = NULL;
146
147         for (entry = glfs_preopened; entry; entry = entry->next) {
148                 if (entry->fs == fs) {
149                         if (--entry->ref)
150                                 return;
151
152                         DLIST_REMOVE(glfs_preopened, entry);
153
154                         glfs_fini(entry->fs);
155                         talloc_free(entry);
156                 }
157         }
158 }
159
160 static int vfs_gluster_set_volfile_servers(glfs_t *fs,
161                                            const char *volfile_servers)
162 {
163         char *server = NULL;
164         int   server_count = 0;
165         int   server_success = 0;
166         int   ret = -1;
167         TALLOC_CTX *frame = talloc_stackframe();
168
169         DBG_INFO("servers list %s\n", volfile_servers);
170
171         while (next_token_talloc(frame, &volfile_servers, &server, " \t")) {
172                 char *transport = NULL;
173                 char *host = NULL;
174                 int   port = 0;
175
176                 server_count++;
177                 DBG_INFO("server %d %s\n", server_count, server);
178
179                 /* Determine the transport type */
180                 if (strncmp(server, "unix+", 5) == 0) {
181                         port = 0;
182                         transport = talloc_strdup(frame, "unix");
183                         if (!transport) {
184                                 errno = ENOMEM;
185                                 goto out;
186                         }
187                         host = talloc_strdup(frame, server + 5);
188                         if (!host) {
189                                 errno = ENOMEM;
190                                 goto out;
191                         }
192                 } else {
193                         char *p = NULL;
194                         char *port_index = NULL;
195
196                         if (strncmp(server, "tcp+", 4) == 0) {
197                                 server += 4;
198                         }
199
200                         /* IPv6 is enclosed in []
201                          * ':' before ']' is part of IPv6
202                          * ':' after  ']' indicates port
203                          */
204                         p = server;
205                         if (server[0] == '[') {
206                                 server++;
207                                 p = index(server, ']');
208                                 if (p == NULL) {
209                                         /* Malformed IPv6 */
210                                         continue;
211                                 }
212                                 p[0] = '\0';
213                                 p++;
214                         }
215
216                         port_index = index(p, ':');
217
218                         if (port_index == NULL) {
219                                 port = 0;
220                         } else {
221                                 port = atoi(port_index + 1);
222                                 port_index[0] = '\0';
223                         }
224                         transport = talloc_strdup(frame, "tcp");
225                         if (!transport) {
226                                 errno = ENOMEM;
227                                 goto out;
228                         }
229                         host = talloc_strdup(frame, server);
230                         if (!host) {
231                                 errno = ENOMEM;
232                                 goto out;
233                         }
234                 }
235
236                 DBG_INFO("Calling set volfile server with params "
237                          "transport=%s, host=%s, port=%d\n", transport,
238                           host, port);
239
240                 ret = glfs_set_volfile_server(fs, transport, host, port);
241                 if (ret < 0) {
242                         DBG_WARNING("Failed to set volfile_server "
243                                     "transport=%s, host=%s, port=%d (%s)\n",
244                                     transport, host, port, strerror(errno));
245                 } else {
246                         server_success++;
247                 }
248         }
249
250 out:
251         if (server_count == 0) {
252                 ret = -1;
253         } else if (server_success < server_count) {
254                 DBG_WARNING("Failed to set %d out of %d servers parsed\n",
255                             server_count - server_success, server_count);
256                 ret = 0;
257         }
258
259         TALLOC_FREE(frame);
260         return ret;
261 }
262
263 /* Disk Operations */
264
265 static int vfs_gluster_connect(struct vfs_handle_struct *handle,
266                                const char *service,
267                                const char *user)
268 {
269         const char *volfile_servers;
270         const char *volume;
271         char *logfile;
272         int loglevel;
273         glfs_t *fs = NULL;
274         TALLOC_CTX *tmp_ctx;
275         int ret = 0;
276
277         tmp_ctx = talloc_new(NULL);
278         if (tmp_ctx == NULL) {
279                 ret = -1;
280                 goto done;
281         }
282         logfile = lp_parm_talloc_string(tmp_ctx, SNUM(handle->conn), "glusterfs",
283                                        "logfile", NULL);
284
285         loglevel = lp_parm_int(SNUM(handle->conn), "glusterfs", "loglevel", -1);
286
287         volfile_servers = lp_parm_talloc_string(tmp_ctx, SNUM(handle->conn),
288                                                "glusterfs", "volfile_server",
289                                                NULL);
290         if (volfile_servers == NULL) {
291                 volfile_servers = DEFAULT_VOLFILE_SERVER;
292         }
293
294         volume = lp_parm_const_string(SNUM(handle->conn), "glusterfs", "volume",
295                                       NULL);
296         if (volume == NULL) {
297                 volume = service;
298         }
299
300         fs = glfs_find_preopened(volume, handle->conn->connectpath);
301         if (fs) {
302                 goto done;
303         }
304
305         fs = glfs_new(volume);
306         if (fs == NULL) {
307                 ret = -1;
308                 goto done;
309         }
310
311         ret = vfs_gluster_set_volfile_servers(fs, volfile_servers);
312         if (ret < 0) {
313                 DBG_ERR("Failed to set volfile_servers from list %s\n",
314                         volfile_servers);
315                 goto done;
316         }
317
318         ret = glfs_set_xlator_option(fs, "*-md-cache", "cache-posix-acl",
319                                      "true");
320         if (ret < 0) {
321                 DEBUG(0, ("%s: Failed to set xlator options\n", volume));
322                 goto done;
323         }
324
325
326         ret = glfs_set_xlator_option(fs, "*-snapview-client",
327                                      "snapdir-entry-path",
328                                      handle->conn->connectpath);
329         if (ret < 0) {
330                 DEBUG(0, ("%s: Failed to set xlator option:"
331                           " snapdir-entry-path\n", volume));
332                 goto done;
333         }
334
335         ret = glfs_set_logging(fs, logfile, loglevel);
336         if (ret < 0) {
337                 DEBUG(0, ("%s: Failed to set logfile %s loglevel %d\n",
338                           volume, logfile, loglevel));
339                 goto done;
340         }
341
342         ret = glfs_init(fs);
343         if (ret < 0) {
344                 DEBUG(0, ("%s: Failed to initialize volume (%s)\n",
345                           volume, strerror(errno)));
346                 goto done;
347         }
348
349         ret = glfs_set_preopened(volume, handle->conn->connectpath, fs);
350         if (ret < 0) {
351                 DEBUG(0, ("%s: Failed to register volume (%s)\n",
352                           volume, strerror(errno)));
353                 goto done;
354         }
355
356         /*
357          * The shadow_copy2 module will fail to export subdirectories
358          * of a gluster volume unless we specify the mount point,
359          * because the detection fails if the file system is not
360          * locally mounted:
361          * https://bugzilla.samba.org/show_bug.cgi?id=13091
362          */
363         lp_do_parameter(SNUM(handle->conn), "shadow:mountpoint", "/");
364
365 done:
366         if (ret < 0) {
367                 if (fs)
368                         glfs_fini(fs);
369         } else {
370                 DBG_ERR("%s: Initialized volume from servers %s\n",
371                         volume, volfile_servers);
372                 handle->data = fs;
373         }
374         talloc_free(tmp_ctx);
375         return ret;
376 }
377
378 static void vfs_gluster_disconnect(struct vfs_handle_struct *handle)
379 {
380         glfs_t *fs = NULL;
381
382         fs = handle->data;
383
384         glfs_clear_preopened(fs);
385 }
386
387 static uint64_t vfs_gluster_disk_free(struct vfs_handle_struct *handle,
388                                 const struct smb_filename *smb_fname,
389                                 uint64_t *bsize_p,
390                                 uint64_t *dfree_p,
391                                 uint64_t *dsize_p)
392 {
393         struct statvfs statvfs = { 0, };
394         int ret;
395
396         ret = glfs_statvfs(handle->data, smb_fname->base_name, &statvfs);
397         if (ret < 0) {
398                 return -1;
399         }
400
401         if (bsize_p != NULL) {
402                 *bsize_p = (uint64_t)statvfs.f_bsize; /* Block size */
403         }
404         if (dfree_p != NULL) {
405                 *dfree_p = (uint64_t)statvfs.f_bavail; /* Available Block units */
406         }
407         if (dsize_p != NULL) {
408                 *dsize_p = (uint64_t)statvfs.f_blocks; /* Total Block units */
409         }
410
411         return (uint64_t)statvfs.f_bavail;
412 }
413
414 static int vfs_gluster_get_quota(struct vfs_handle_struct *handle,
415                                 const struct smb_filename *smb_fname,
416                                 enum SMB_QUOTA_TYPE qtype,
417                                 unid_t id,
418                                 SMB_DISK_QUOTA *qt)
419 {
420         errno = ENOSYS;
421         return -1;
422 }
423
424 static int
425 vfs_gluster_set_quota(struct vfs_handle_struct *handle,
426                       enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
427 {
428         errno = ENOSYS;
429         return -1;
430 }
431
432 static int vfs_gluster_statvfs(struct vfs_handle_struct *handle,
433                                 const struct smb_filename *smb_fname,
434                                 struct vfs_statvfs_struct *vfs_statvfs)
435 {
436         struct statvfs statvfs = { 0, };
437         int ret;
438
439         ret = glfs_statvfs(handle->data, smb_fname->base_name, &statvfs);
440         if (ret < 0) {
441                 DEBUG(0, ("glfs_statvfs(%s) failed: %s\n",
442                           smb_fname->base_name, strerror(errno)));
443                 return -1;
444         }
445
446         ZERO_STRUCTP(vfs_statvfs);
447
448         vfs_statvfs->OptimalTransferSize = statvfs.f_frsize;
449         vfs_statvfs->BlockSize = statvfs.f_bsize;
450         vfs_statvfs->TotalBlocks = statvfs.f_blocks;
451         vfs_statvfs->BlocksAvail = statvfs.f_bfree;
452         vfs_statvfs->UserBlocksAvail = statvfs.f_bavail;
453         vfs_statvfs->TotalFileNodes = statvfs.f_files;
454         vfs_statvfs->FreeFileNodes = statvfs.f_ffree;
455         vfs_statvfs->FsIdentifier = statvfs.f_fsid;
456         vfs_statvfs->FsCapabilities =
457             FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
458
459         return ret;
460 }
461
462 static uint32_t vfs_gluster_fs_capabilities(struct vfs_handle_struct *handle,
463                                             enum timestamp_set_resolution *p_ts_res)
464 {
465         uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
466
467 #ifdef STAT_HAVE_NSEC
468         *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
469 #endif
470
471         return caps;
472 }
473
474 static DIR *vfs_gluster_opendir(struct vfs_handle_struct *handle,
475                                 const struct smb_filename *smb_fname,
476                                 const char *mask,
477                                 uint32_t attributes)
478 {
479         glfs_fd_t *fd;
480
481         fd = glfs_opendir(handle->data, smb_fname->base_name);
482         if (fd == NULL) {
483                 DEBUG(0, ("glfs_opendir(%s) failed: %s\n",
484                           smb_fname->base_name, strerror(errno)));
485         }
486
487         return (DIR *) fd;
488 }
489
490 static DIR *vfs_gluster_fdopendir(struct vfs_handle_struct *handle,
491                                   files_struct *fsp, const char *mask,
492                                   uint32_t attributes)
493 {
494         return (DIR *) *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
495 }
496
497 static int vfs_gluster_closedir(struct vfs_handle_struct *handle, DIR *dirp)
498 {
499         return glfs_closedir((void *)dirp);
500 }
501
502 static struct dirent *vfs_gluster_readdir(struct vfs_handle_struct *handle,
503                                           DIR *dirp, SMB_STRUCT_STAT *sbuf)
504 {
505         static char direntbuf[512];
506         int ret;
507         struct stat stat;
508         struct dirent *dirent = 0;
509
510         if (sbuf != NULL) {
511                 ret = glfs_readdirplus_r((void *)dirp, &stat, (void *)direntbuf,
512                                          &dirent);
513         } else {
514                 ret = glfs_readdir_r((void *)dirp, (void *)direntbuf, &dirent);
515         }
516
517         if ((ret < 0) || (dirent == NULL)) {
518                 return NULL;
519         }
520
521         if (sbuf != NULL) {
522                 smb_stat_ex_from_stat(sbuf, &stat);
523         }
524
525         return dirent;
526 }
527
528 static long vfs_gluster_telldir(struct vfs_handle_struct *handle, DIR *dirp)
529 {
530         return glfs_telldir((void *)dirp);
531 }
532
533 static void vfs_gluster_seekdir(struct vfs_handle_struct *handle, DIR *dirp,
534                                 long offset)
535 {
536         glfs_seekdir((void *)dirp, offset);
537 }
538
539 static void vfs_gluster_rewinddir(struct vfs_handle_struct *handle, DIR *dirp)
540 {
541         glfs_seekdir((void *)dirp, 0);
542 }
543
544 static int vfs_gluster_mkdir(struct vfs_handle_struct *handle,
545                              const struct smb_filename *smb_fname,
546                              mode_t mode)
547 {
548         return glfs_mkdir(handle->data, smb_fname->base_name, mode);
549 }
550
551 static int vfs_gluster_rmdir(struct vfs_handle_struct *handle,
552                         const struct smb_filename *smb_fname)
553 {
554         return glfs_rmdir(handle->data, smb_fname->base_name);
555 }
556
557 static int vfs_gluster_open(struct vfs_handle_struct *handle,
558                             struct smb_filename *smb_fname, files_struct *fsp,
559                             int flags, mode_t mode)
560 {
561         glfs_fd_t *glfd;
562         glfs_fd_t **p_tmp;
563
564         if (flags & O_DIRECTORY) {
565                 glfd = glfs_opendir(handle->data, smb_fname->base_name);
566         } else if (flags & O_CREAT) {
567                 glfd = glfs_creat(handle->data, smb_fname->base_name, flags,
568                                   mode);
569         } else {
570                 glfd = glfs_open(handle->data, smb_fname->base_name, flags);
571         }
572
573         if (glfd == NULL) {
574                 return -1;
575         }
576         p_tmp = (glfs_fd_t **)VFS_ADD_FSP_EXTENSION(handle, fsp,
577                                                           glfs_fd_t *, NULL);
578         *p_tmp = glfd;
579         /* An arbitrary value for error reporting, so you know its us. */
580         return 13371337;
581 }
582
583 static int vfs_gluster_close(struct vfs_handle_struct *handle,
584                              files_struct *fsp)
585 {
586         glfs_fd_t *glfd;
587         glfd = *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
588         VFS_REMOVE_FSP_EXTENSION(handle, fsp);
589         return glfs_close(glfd);
590 }
591
592 static ssize_t vfs_gluster_read(struct vfs_handle_struct *handle,
593                                 files_struct *fsp, void *data, size_t n)
594 {
595         return glfs_read(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, 0);
596 }
597
598 static ssize_t vfs_gluster_pread(struct vfs_handle_struct *handle,
599                                  files_struct *fsp, void *data, size_t n,
600                                  off_t offset)
601 {
602         return glfs_pread(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, offset, 0);
603 }
604
605 struct glusterfs_aio_state;
606
607 struct glusterfs_aio_wrapper {
608         struct glusterfs_aio_state *state;
609 };
610
611 struct glusterfs_aio_state {
612         ssize_t ret;
613         struct tevent_req *req;
614         bool cancelled;
615         struct vfs_aio_state vfs_aio_state;
616         struct timespec start;
617 };
618
619 static int aio_wrapper_destructor(struct glusterfs_aio_wrapper *wrap)
620 {
621         if (wrap->state != NULL) {
622                 wrap->state->cancelled = true;
623         }
624
625         return 0;
626 }
627
628 /*
629  * This function is the callback that will be called on glusterfs
630  * threads once the async IO submitted is complete. To notify
631  * Samba of the completion we use a pipe based queue.
632  */
633 static void aio_glusterfs_done(glfs_fd_t *fd, ssize_t ret, void *data)
634 {
635         struct glusterfs_aio_state *state = NULL;
636         int sts = 0;
637         struct timespec end;
638
639         state = (struct glusterfs_aio_state *)data;
640
641         PROFILE_TIMESTAMP(&end);
642
643         if (ret < 0) {
644                 state->ret = -1;
645                 state->vfs_aio_state.error = errno;
646         } else {
647                 state->ret = ret;
648         }
649         state->vfs_aio_state.duration = nsec_time_diff(&end, &state->start);
650
651         /*
652          * Write the state pointer to glusterfs_aio_state to the
653          * pipe, so we can call tevent_req_done() from the main thread,
654          * because tevent_req_done() is not designed to be executed in
655          * the multithread environment, so tevent_req_done() must be
656          * executed from the smbd main thread.
657          *
658          * write(2) on pipes with sizes under _POSIX_PIPE_BUF
659          * in size is atomic, without this, the use op pipes in this
660          * code would not work.
661          *
662          * sys_write is a thin enough wrapper around write(2)
663          * that we can trust it here.
664          */
665
666         sts = sys_write(write_fd, &state, sizeof(struct glusterfs_aio_state *));
667         if (sts < 0) {
668                 DEBUG(0,("\nWrite to pipe failed (%s)", strerror(errno)));
669         }
670
671         return;
672 }
673
674 /*
675  * Read each req off the pipe and process it.
676  */
677 static void aio_tevent_fd_done(struct tevent_context *event_ctx,
678                                 struct tevent_fd *fde,
679                                 uint16_t flags, void *data)
680 {
681         struct tevent_req *req = NULL;
682         struct glusterfs_aio_state *state = NULL;
683         int sts = 0;
684
685         /*
686          * read(2) on pipes is atomic if the needed data is available
687          * in the pipe, per SUS and POSIX.  Because we always write
688          * to the pipe in sizeof(struct tevent_req *) chunks, we can
689          * always read in those chunks, atomically.
690          *
691          * sys_read is a thin enough wrapper around read(2) that we
692          * can trust it here.
693          */
694
695         sts = sys_read(read_fd, &state, sizeof(struct glusterfs_aio_state *));
696
697         if (sts < 0) {
698                 DEBUG(0,("\nRead from pipe failed (%s)", strerror(errno)));
699         }
700
701         /* if we've cancelled the op, there is no req, so just clean up. */
702         if (state->cancelled == true) {
703                 TALLOC_FREE(state);
704                 return;
705         }
706
707         req = state->req;
708
709         if (req) {
710                 tevent_req_done(req);
711         }
712         return;
713 }
714
715 static bool init_gluster_aio(struct vfs_handle_struct *handle)
716 {
717         int fds[2];
718         int ret = -1;
719
720         if (read_fd != -1) {
721                 /*
722                  * Already initialized.
723                  */
724                 return true;
725         }
726
727         ret = pipe(fds);
728         if (ret == -1) {
729                 goto fail;
730         }
731
732         read_fd = fds[0];
733         write_fd = fds[1];
734
735         aio_read_event = tevent_add_fd(handle->conn->sconn->ev_ctx,
736                                         NULL,
737                                         read_fd,
738                                         TEVENT_FD_READ,
739                                         aio_tevent_fd_done,
740                                         NULL);
741         if (aio_read_event == NULL) {
742                 goto fail;
743         }
744
745         return true;
746 fail:
747         TALLOC_FREE(aio_read_event);
748         if (read_fd != -1) {
749                 close(read_fd);
750                 close(write_fd);
751                 read_fd = -1;
752                 write_fd = -1;
753         }
754         return false;
755 }
756
757 static struct glusterfs_aio_state *aio_state_create(TALLOC_CTX *mem_ctx)
758 {
759         struct tevent_req *req = NULL;
760         struct glusterfs_aio_state *state = NULL;
761         struct glusterfs_aio_wrapper *wrapper = NULL;
762
763         req = tevent_req_create(mem_ctx, &wrapper, struct glusterfs_aio_wrapper);
764
765         if (req == NULL) {
766                 return NULL;
767         }
768
769         state = talloc_zero(NULL, struct glusterfs_aio_state);
770
771         if (state == NULL) {
772                 TALLOC_FREE(req);
773                 return NULL;
774         }
775
776         talloc_set_destructor(wrapper, aio_wrapper_destructor);
777         state->cancelled = false;
778         state->req = req;
779
780         wrapper->state = state;
781
782         return state;
783 }
784
785 static struct tevent_req *vfs_gluster_pread_send(struct vfs_handle_struct
786                                                   *handle, TALLOC_CTX *mem_ctx,
787                                                   struct tevent_context *ev,
788                                                   files_struct *fsp,
789                                                   void *data, size_t n,
790                                                   off_t offset)
791 {
792         struct glusterfs_aio_state *state = NULL;
793         struct tevent_req *req = NULL;
794         int ret = 0;
795
796         state = aio_state_create(mem_ctx);
797
798         if (state == NULL) {
799                 return NULL;
800         }
801
802         req = state->req;
803
804         if (!init_gluster_aio(handle)) {
805                 tevent_req_error(req, EIO);
806                 return tevent_req_post(req, ev);
807         }
808
809         PROFILE_TIMESTAMP(&state->start);
810         ret = glfs_pread_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
811                                 fsp), data, n, offset, 0, aio_glusterfs_done,
812                                 state);
813         if (ret < 0) {
814                 tevent_req_error(req, -ret);
815                 return tevent_req_post(req, ev);
816         }
817
818         return req;
819 }
820
821 static struct tevent_req *vfs_gluster_pwrite_send(struct vfs_handle_struct
822                                                   *handle, TALLOC_CTX *mem_ctx,
823                                                   struct tevent_context *ev,
824                                                   files_struct *fsp,
825                                                   const void *data, size_t n,
826                                                   off_t offset)
827 {
828         struct glusterfs_aio_state *state = NULL;
829         struct tevent_req *req = NULL;
830         int ret = 0;
831
832         state = aio_state_create(mem_ctx);
833
834         if (state == NULL) {
835                 return NULL;
836         }
837
838         req = state->req;
839
840         if (!init_gluster_aio(handle)) {
841                 tevent_req_error(req, EIO);
842                 return tevent_req_post(req, ev);
843         }
844
845         PROFILE_TIMESTAMP(&state->start);
846         ret = glfs_pwrite_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
847                                 fsp), data, n, offset, 0, aio_glusterfs_done,
848                                 state);
849         if (ret < 0) {
850                 tevent_req_error(req, -ret);
851                 return tevent_req_post(req, ev);
852         }
853
854         return req;
855 }
856
857 static ssize_t vfs_gluster_recv(struct tevent_req *req,
858                                 struct vfs_aio_state *vfs_aio_state)
859 {
860         struct glusterfs_aio_wrapper *wrapper = NULL;
861         int ret = 0;
862
863         wrapper = tevent_req_data(req, struct glusterfs_aio_wrapper);
864
865         if (wrapper == NULL) {
866                 return -1;
867         }
868
869         if (wrapper->state == NULL) {
870                 return -1;
871         }
872
873         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
874                 return -1;
875         }
876
877         *vfs_aio_state = wrapper->state->vfs_aio_state;
878         ret = wrapper->state->ret;
879
880         /* Clean up the state, it is in a NULL context. */
881
882         TALLOC_FREE(wrapper->state);
883
884         return ret;
885 }
886
887 static ssize_t vfs_gluster_write(struct vfs_handle_struct *handle,
888                                  files_struct *fsp, const void *data, size_t n)
889 {
890         return glfs_write(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, 0);
891 }
892
893 static ssize_t vfs_gluster_pwrite(struct vfs_handle_struct *handle,
894                                   files_struct *fsp, const void *data,
895                                   size_t n, off_t offset)
896 {
897         return glfs_pwrite(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, offset, 0);
898 }
899
900 static off_t vfs_gluster_lseek(struct vfs_handle_struct *handle,
901                                files_struct *fsp, off_t offset, int whence)
902 {
903         return glfs_lseek(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), offset, whence);
904 }
905
906 static ssize_t vfs_gluster_sendfile(struct vfs_handle_struct *handle, int tofd,
907                                     files_struct *fromfsp,
908                                     const DATA_BLOB *hdr,
909                                     off_t offset, size_t n)
910 {
911         errno = ENOTSUP;
912         return -1;
913 }
914
915 static ssize_t vfs_gluster_recvfile(struct vfs_handle_struct *handle,
916                                     int fromfd, files_struct *tofsp,
917                                     off_t offset, size_t n)
918 {
919         errno = ENOTSUP;
920         return -1;
921 }
922
923 static int vfs_gluster_rename(struct vfs_handle_struct *handle,
924                               const struct smb_filename *smb_fname_src,
925                               const struct smb_filename *smb_fname_dst)
926 {
927         return glfs_rename(handle->data, smb_fname_src->base_name,
928                            smb_fname_dst->base_name);
929 }
930
931 static int vfs_gluster_fsync(struct vfs_handle_struct *handle,
932                              files_struct *fsp)
933 {
934         return glfs_fsync(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp));
935 }
936
937 static struct tevent_req *vfs_gluster_fsync_send(struct vfs_handle_struct
938                                                  *handle, TALLOC_CTX *mem_ctx,
939                                                  struct tevent_context *ev,
940                                                  files_struct *fsp)
941 {
942         struct tevent_req *req = NULL;
943         struct glusterfs_aio_state *state = NULL;
944         int ret = 0;
945
946         state = aio_state_create(mem_ctx);
947
948         if (state == NULL) {
949                 return NULL;
950         }
951
952         req = state->req;
953
954         if (!init_gluster_aio(handle)) {
955                 tevent_req_error(req, EIO);
956                 return tevent_req_post(req, ev);
957         }
958
959         PROFILE_TIMESTAMP(&state->start);
960         ret = glfs_fsync_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
961                                 fsp), aio_glusterfs_done, req);
962         if (ret < 0) {
963                 tevent_req_error(req, -ret);
964                 return tevent_req_post(req, ev);
965         }
966         return req;
967 }
968
969 static int vfs_gluster_fsync_recv(struct tevent_req *req,
970                                   struct vfs_aio_state *vfs_aio_state)
971 {
972         /*
973          * Use implicit conversion ssize_t->int
974          */
975         return vfs_gluster_recv(req, vfs_aio_state);
976 }
977
978 static int vfs_gluster_stat(struct vfs_handle_struct *handle,
979                             struct smb_filename *smb_fname)
980 {
981         struct stat st;
982         int ret;
983
984         ret = glfs_stat(handle->data, smb_fname->base_name, &st);
985         if (ret == 0) {
986                 smb_stat_ex_from_stat(&smb_fname->st, &st);
987         }
988         if (ret < 0 && errno != ENOENT) {
989                 DEBUG(0, ("glfs_stat(%s) failed: %s\n",
990                           smb_fname->base_name, strerror(errno)));
991         }
992         return ret;
993 }
994
995 static int vfs_gluster_fstat(struct vfs_handle_struct *handle,
996                              files_struct *fsp, SMB_STRUCT_STAT *sbuf)
997 {
998         struct stat st;
999         int ret;
1000
1001         ret = glfs_fstat(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), &st);
1002         if (ret == 0) {
1003                 smb_stat_ex_from_stat(sbuf, &st);
1004         }
1005         if (ret < 0) {
1006                 DEBUG(0, ("glfs_fstat(%d) failed: %s\n",
1007                           fsp->fh->fd, strerror(errno)));
1008         }
1009         return ret;
1010 }
1011
1012 static int vfs_gluster_lstat(struct vfs_handle_struct *handle,
1013                              struct smb_filename *smb_fname)
1014 {
1015         struct stat st;
1016         int ret;
1017
1018         ret = glfs_lstat(handle->data, smb_fname->base_name, &st);
1019         if (ret == 0) {
1020                 smb_stat_ex_from_stat(&smb_fname->st, &st);
1021         }
1022         if (ret < 0 && errno != ENOENT) {
1023                 DEBUG(0, ("glfs_lstat(%s) failed: %s\n",
1024                           smb_fname->base_name, strerror(errno)));
1025         }
1026         return ret;
1027 }
1028
1029 static uint64_t vfs_gluster_get_alloc_size(struct vfs_handle_struct *handle,
1030                                            files_struct *fsp,
1031                                            const SMB_STRUCT_STAT *sbuf)
1032 {
1033         return sbuf->st_ex_blocks * 512;
1034 }
1035
1036 static int vfs_gluster_unlink(struct vfs_handle_struct *handle,
1037                               const struct smb_filename *smb_fname)
1038 {
1039         return glfs_unlink(handle->data, smb_fname->base_name);
1040 }
1041
1042 static int vfs_gluster_chmod(struct vfs_handle_struct *handle,
1043                                 const struct smb_filename *smb_fname,
1044                                 mode_t mode)
1045 {
1046         return glfs_chmod(handle->data, smb_fname->base_name, mode);
1047 }
1048
1049 static int vfs_gluster_fchmod(struct vfs_handle_struct *handle,
1050                               files_struct *fsp, mode_t mode)
1051 {
1052         return glfs_fchmod(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), mode);
1053 }
1054
1055 static int vfs_gluster_chown(struct vfs_handle_struct *handle,
1056                         const struct smb_filename *smb_fname,
1057                         uid_t uid,
1058                         gid_t gid)
1059 {
1060         return glfs_chown(handle->data, smb_fname->base_name, uid, gid);
1061 }
1062
1063 static int vfs_gluster_fchown(struct vfs_handle_struct *handle,
1064                               files_struct *fsp, uid_t uid, gid_t gid)
1065 {
1066         return glfs_fchown(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), uid, gid);
1067 }
1068
1069 static int vfs_gluster_lchown(struct vfs_handle_struct *handle,
1070                         const struct smb_filename *smb_fname,
1071                         uid_t uid,
1072                         gid_t gid)
1073 {
1074         return glfs_lchown(handle->data, smb_fname->base_name, uid, gid);
1075 }
1076
1077 static int vfs_gluster_chdir(struct vfs_handle_struct *handle,
1078                         const struct smb_filename *smb_fname)
1079 {
1080         return glfs_chdir(handle->data, smb_fname->base_name);
1081 }
1082
1083 static struct smb_filename *vfs_gluster_getwd(struct vfs_handle_struct *handle,
1084                                 TALLOC_CTX *ctx)
1085 {
1086         char *cwd;
1087         char *ret;
1088         struct smb_filename *smb_fname = NULL;
1089
1090         cwd = SMB_CALLOC_ARRAY(char, PATH_MAX);
1091         if (cwd == NULL) {
1092                 return NULL;
1093         }
1094
1095         ret = glfs_getcwd(handle->data, cwd, PATH_MAX - 1);
1096         if (ret == NULL) {
1097                 SAFE_FREE(cwd);
1098                 return NULL;
1099         }
1100         smb_fname = synthetic_smb_fname(ctx,
1101                                         ret,
1102                                         NULL,
1103                                         NULL,
1104                                         0);
1105         SAFE_FREE(cwd);
1106         return smb_fname;
1107 }
1108
1109 static int vfs_gluster_ntimes(struct vfs_handle_struct *handle,
1110                               const struct smb_filename *smb_fname,
1111                               struct smb_file_time *ft)
1112 {
1113         struct timespec times[2];
1114
1115         if (null_timespec(ft->atime)) {
1116                 times[0].tv_sec = smb_fname->st.st_ex_atime.tv_sec;
1117                 times[0].tv_nsec = smb_fname->st.st_ex_atime.tv_nsec;
1118         } else {
1119                 times[0].tv_sec = ft->atime.tv_sec;
1120                 times[0].tv_nsec = ft->atime.tv_nsec;
1121         }
1122
1123         if (null_timespec(ft->mtime)) {
1124                 times[1].tv_sec = smb_fname->st.st_ex_mtime.tv_sec;
1125                 times[1].tv_nsec = smb_fname->st.st_ex_mtime.tv_nsec;
1126         } else {
1127                 times[1].tv_sec = ft->mtime.tv_sec;
1128                 times[1].tv_nsec = ft->mtime.tv_nsec;
1129         }
1130
1131         if ((timespec_compare(&times[0],
1132                               &smb_fname->st.st_ex_atime) == 0) &&
1133             (timespec_compare(&times[1],
1134                               &smb_fname->st.st_ex_mtime) == 0)) {
1135                 return 0;
1136         }
1137
1138         return glfs_utimens(handle->data, smb_fname->base_name, times);
1139 }
1140
1141 static int vfs_gluster_ftruncate(struct vfs_handle_struct *handle,
1142                                  files_struct *fsp, off_t offset)
1143 {
1144         return glfs_ftruncate(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), offset);
1145 }
1146
1147 static int vfs_gluster_fallocate(struct vfs_handle_struct *handle,
1148                                  struct files_struct *fsp,
1149                                  uint32_t mode,
1150                                  off_t offset, off_t len)
1151 {
1152         /* TODO: add support using glfs_fallocate() and glfs_zerofill() */
1153         errno = ENOTSUP;
1154         return -1;
1155 }
1156
1157 static struct smb_filename *vfs_gluster_realpath(struct vfs_handle_struct *handle,
1158                                 TALLOC_CTX *ctx,
1159                                 const struct smb_filename *smb_fname)
1160 {
1161         char *result = NULL;
1162         struct smb_filename *result_fname = NULL;
1163         char *resolved_path = SMB_MALLOC_ARRAY(char, PATH_MAX+1);
1164
1165         if (resolved_path == NULL) {
1166                 errno = ENOMEM;
1167                 return NULL;
1168         }
1169
1170         result = glfs_realpath(handle->data,
1171                         smb_fname->base_name,
1172                         resolved_path);
1173         if (result != NULL) {
1174                 result_fname = synthetic_smb_fname(ctx, result, NULL, NULL, 0);
1175         }
1176
1177         SAFE_FREE(resolved_path);
1178         return result_fname;
1179 }
1180
1181 static bool vfs_gluster_lock(struct vfs_handle_struct *handle,
1182                              files_struct *fsp, int op, off_t offset,
1183                              off_t count, int type)
1184 {
1185         struct flock flock = { 0, };
1186         int ret;
1187
1188         flock.l_type = type;
1189         flock.l_whence = SEEK_SET;
1190         flock.l_start = offset;
1191         flock.l_len = count;
1192         flock.l_pid = 0;
1193
1194         ret = glfs_posix_lock(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), op, &flock);
1195
1196         if (op == F_GETLK) {
1197                 /* lock query, true if someone else has locked */
1198                 if ((ret != -1) &&
1199                     (flock.l_type != F_UNLCK) &&
1200                     (flock.l_pid != 0) && (flock.l_pid != getpid()))
1201                         return true;
1202                 /* not me */
1203                 return false;
1204         }
1205
1206         if (ret == -1) {
1207                 return false;
1208         }
1209
1210         return true;
1211 }
1212
1213 static int vfs_gluster_kernel_flock(struct vfs_handle_struct *handle,
1214                                     files_struct *fsp, uint32_t share_mode,
1215                                     uint32_t access_mask)
1216 {
1217         errno = ENOSYS;
1218         return -1;
1219 }
1220
1221 static int vfs_gluster_linux_setlease(struct vfs_handle_struct *handle,
1222                                       files_struct *fsp, int leasetype)
1223 {
1224         errno = ENOSYS;
1225         return -1;
1226 }
1227
1228 static bool vfs_gluster_getlock(struct vfs_handle_struct *handle,
1229                                 files_struct *fsp, off_t *poffset,
1230                                 off_t *pcount, int *ptype, pid_t *ppid)
1231 {
1232         struct flock flock = { 0, };
1233         int ret;
1234
1235         flock.l_type = *ptype;
1236         flock.l_whence = SEEK_SET;
1237         flock.l_start = *poffset;
1238         flock.l_len = *pcount;
1239         flock.l_pid = 0;
1240
1241         ret = glfs_posix_lock(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), F_GETLK, &flock);
1242
1243         if (ret == -1) {
1244                 return false;
1245         }
1246
1247         *ptype = flock.l_type;
1248         *poffset = flock.l_start;
1249         *pcount = flock.l_len;
1250         *ppid = flock.l_pid;
1251
1252         return true;
1253 }
1254
1255 static int vfs_gluster_symlink(struct vfs_handle_struct *handle,
1256                                 const char *link_target,
1257                                 const struct smb_filename *new_smb_fname)
1258 {
1259         return glfs_symlink(handle->data,
1260                         link_target,
1261                         new_smb_fname->base_name);
1262 }
1263
1264 static int vfs_gluster_readlink(struct vfs_handle_struct *handle,
1265                                 const struct smb_filename *smb_fname,
1266                                 char *buf,
1267                                 size_t bufsiz)
1268 {
1269         return glfs_readlink(handle->data, smb_fname->base_name, buf, bufsiz);
1270 }
1271
1272 static int vfs_gluster_link(struct vfs_handle_struct *handle,
1273                                 const struct smb_filename *old_smb_fname,
1274                                 const struct smb_filename *new_smb_fname)
1275 {
1276         return glfs_link(handle->data,
1277                         old_smb_fname->base_name,
1278                         new_smb_fname->base_name);
1279 }
1280
1281 static int vfs_gluster_mknod(struct vfs_handle_struct *handle,
1282                                 const struct smb_filename *smb_fname,
1283                                 mode_t mode,
1284                                 SMB_DEV_T dev)
1285 {
1286         return glfs_mknod(handle->data, smb_fname->base_name, mode, dev);
1287 }
1288
1289 static int vfs_gluster_chflags(struct vfs_handle_struct *handle,
1290                                 const struct smb_filename *smb_fname,
1291                                 unsigned int flags)
1292 {
1293         errno = ENOSYS;
1294         return -1;
1295 }
1296
1297 static int vfs_gluster_get_real_filename(struct vfs_handle_struct *handle,
1298                                          const char *path, const char *name,
1299                                          TALLOC_CTX *mem_ctx, char **found_name)
1300 {
1301         int ret;
1302         char key_buf[NAME_MAX + 64];
1303         char val_buf[NAME_MAX + 1];
1304
1305         if (strlen(name) >= NAME_MAX) {
1306                 errno = ENAMETOOLONG;
1307                 return -1;
1308         }
1309
1310         snprintf(key_buf, NAME_MAX + 64,
1311                  "glusterfs.get_real_filename:%s", name);
1312
1313         ret = glfs_getxattr(handle->data, path, key_buf, val_buf, NAME_MAX + 1);
1314         if (ret == -1) {
1315                 if (errno == ENODATA) {
1316                         errno = EOPNOTSUPP;
1317                 }
1318                 return -1;
1319         }
1320
1321         *found_name = talloc_strdup(mem_ctx, val_buf);
1322         if (found_name[0] == NULL) {
1323                 errno = ENOMEM;
1324                 return -1;
1325         }
1326         return 0;
1327 }
1328
1329 static const char *vfs_gluster_connectpath(struct vfs_handle_struct *handle,
1330                                 const struct smb_filename *smb_fname)
1331 {
1332         return handle->conn->connectpath;
1333 }
1334
1335 /* EA Operations */
1336
1337 static ssize_t vfs_gluster_getxattr(struct vfs_handle_struct *handle,
1338                                 const struct smb_filename *smb_fname,
1339                                 const char *name,
1340                                 void *value,
1341                                 size_t size)
1342 {
1343         return glfs_getxattr(handle->data, smb_fname->base_name,
1344                         name, value, size);
1345 }
1346
1347 static ssize_t vfs_gluster_fgetxattr(struct vfs_handle_struct *handle,
1348                                      files_struct *fsp, const char *name,
1349                                      void *value, size_t size)
1350 {
1351         return glfs_fgetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name, value, size);
1352 }
1353
1354 static ssize_t vfs_gluster_listxattr(struct vfs_handle_struct *handle,
1355                                 const struct smb_filename *smb_fname,
1356                                 char *list,
1357                                 size_t size)
1358 {
1359         return glfs_listxattr(handle->data, smb_fname->base_name, list, size);
1360 }
1361
1362 static ssize_t vfs_gluster_flistxattr(struct vfs_handle_struct *handle,
1363                                       files_struct *fsp, char *list,
1364                                       size_t size)
1365 {
1366         return glfs_flistxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), list, size);
1367 }
1368
1369 static int vfs_gluster_removexattr(struct vfs_handle_struct *handle,
1370                                 const struct smb_filename *smb_fname,
1371                                 const char *name)
1372 {
1373         return glfs_removexattr(handle->data, smb_fname->base_name, name);
1374 }
1375
1376 static int vfs_gluster_fremovexattr(struct vfs_handle_struct *handle,
1377                                     files_struct *fsp, const char *name)
1378 {
1379         return glfs_fremovexattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name);
1380 }
1381
1382 static int vfs_gluster_setxattr(struct vfs_handle_struct *handle,
1383                                 const struct smb_filename *smb_fname,
1384                                 const char *name,
1385                                 const void *value, size_t size, int flags)
1386 {
1387         return glfs_setxattr(handle->data, smb_fname->base_name, name, value, size, flags);
1388 }
1389
1390 static int vfs_gluster_fsetxattr(struct vfs_handle_struct *handle,
1391                                  files_struct *fsp, const char *name,
1392                                  const void *value, size_t size, int flags)
1393 {
1394         return glfs_fsetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name, value, size,
1395                               flags);
1396 }
1397
1398 /* AIO Operations */
1399
1400 static bool vfs_gluster_aio_force(struct vfs_handle_struct *handle,
1401                                   files_struct *fsp)
1402 {
1403         return false;
1404 }
1405
1406 static struct vfs_fn_pointers glusterfs_fns = {
1407
1408         /* Disk Operations */
1409
1410         .connect_fn = vfs_gluster_connect,
1411         .disconnect_fn = vfs_gluster_disconnect,
1412         .disk_free_fn = vfs_gluster_disk_free,
1413         .get_quota_fn = vfs_gluster_get_quota,
1414         .set_quota_fn = vfs_gluster_set_quota,
1415         .statvfs_fn = vfs_gluster_statvfs,
1416         .fs_capabilities_fn = vfs_gluster_fs_capabilities,
1417
1418         .get_dfs_referrals_fn = NULL,
1419
1420         /* Directory Operations */
1421
1422         .opendir_fn = vfs_gluster_opendir,
1423         .fdopendir_fn = vfs_gluster_fdopendir,
1424         .readdir_fn = vfs_gluster_readdir,
1425         .seekdir_fn = vfs_gluster_seekdir,
1426         .telldir_fn = vfs_gluster_telldir,
1427         .rewind_dir_fn = vfs_gluster_rewinddir,
1428         .mkdir_fn = vfs_gluster_mkdir,
1429         .rmdir_fn = vfs_gluster_rmdir,
1430         .closedir_fn = vfs_gluster_closedir,
1431
1432         /* File Operations */
1433
1434         .open_fn = vfs_gluster_open,
1435         .create_file_fn = NULL,
1436         .close_fn = vfs_gluster_close,
1437         .read_fn = vfs_gluster_read,
1438         .pread_fn = vfs_gluster_pread,
1439         .pread_send_fn = vfs_gluster_pread_send,
1440         .pread_recv_fn = vfs_gluster_recv,
1441         .write_fn = vfs_gluster_write,
1442         .pwrite_fn = vfs_gluster_pwrite,
1443         .pwrite_send_fn = vfs_gluster_pwrite_send,
1444         .pwrite_recv_fn = vfs_gluster_recv,
1445         .lseek_fn = vfs_gluster_lseek,
1446         .sendfile_fn = vfs_gluster_sendfile,
1447         .recvfile_fn = vfs_gluster_recvfile,
1448         .rename_fn = vfs_gluster_rename,
1449         .fsync_fn = vfs_gluster_fsync,
1450         .fsync_send_fn = vfs_gluster_fsync_send,
1451         .fsync_recv_fn = vfs_gluster_fsync_recv,
1452
1453         .stat_fn = vfs_gluster_stat,
1454         .fstat_fn = vfs_gluster_fstat,
1455         .lstat_fn = vfs_gluster_lstat,
1456         .get_alloc_size_fn = vfs_gluster_get_alloc_size,
1457         .unlink_fn = vfs_gluster_unlink,
1458
1459         .chmod_fn = vfs_gluster_chmod,
1460         .fchmod_fn = vfs_gluster_fchmod,
1461         .chown_fn = vfs_gluster_chown,
1462         .fchown_fn = vfs_gluster_fchown,
1463         .lchown_fn = vfs_gluster_lchown,
1464         .chdir_fn = vfs_gluster_chdir,
1465         .getwd_fn = vfs_gluster_getwd,
1466         .ntimes_fn = vfs_gluster_ntimes,
1467         .ftruncate_fn = vfs_gluster_ftruncate,
1468         .fallocate_fn = vfs_gluster_fallocate,
1469         .lock_fn = vfs_gluster_lock,
1470         .kernel_flock_fn = vfs_gluster_kernel_flock,
1471         .linux_setlease_fn = vfs_gluster_linux_setlease,
1472         .getlock_fn = vfs_gluster_getlock,
1473         .symlink_fn = vfs_gluster_symlink,
1474         .readlink_fn = vfs_gluster_readlink,
1475         .link_fn = vfs_gluster_link,
1476         .mknod_fn = vfs_gluster_mknod,
1477         .realpath_fn = vfs_gluster_realpath,
1478         .chflags_fn = vfs_gluster_chflags,
1479         .file_id_create_fn = NULL,
1480         .streaminfo_fn = NULL,
1481         .get_real_filename_fn = vfs_gluster_get_real_filename,
1482         .connectpath_fn = vfs_gluster_connectpath,
1483
1484         .brl_lock_windows_fn = NULL,
1485         .brl_unlock_windows_fn = NULL,
1486         .brl_cancel_windows_fn = NULL,
1487         .strict_lock_check_fn = NULL,
1488         .translate_name_fn = NULL,
1489         .fsctl_fn = NULL,
1490
1491         /* NT ACL Operations */
1492         .fget_nt_acl_fn = NULL,
1493         .get_nt_acl_fn = NULL,
1494         .fset_nt_acl_fn = NULL,
1495         .audit_file_fn = NULL,
1496
1497         /* Posix ACL Operations */
1498         .chmod_acl_fn = NULL,   /* passthrough to default */
1499         .fchmod_acl_fn = NULL,  /* passthrough to default */
1500         .sys_acl_get_file_fn = posixacl_xattr_acl_get_file,
1501         .sys_acl_get_fd_fn = posixacl_xattr_acl_get_fd,
1502         .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
1503         .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
1504         .sys_acl_set_file_fn = posixacl_xattr_acl_set_file,
1505         .sys_acl_set_fd_fn = posixacl_xattr_acl_set_fd,
1506         .sys_acl_delete_def_file_fn = posixacl_xattr_acl_delete_def_file,
1507
1508         /* EA Operations */
1509         .getxattr_fn = vfs_gluster_getxattr,
1510         .fgetxattr_fn = vfs_gluster_fgetxattr,
1511         .listxattr_fn = vfs_gluster_listxattr,
1512         .flistxattr_fn = vfs_gluster_flistxattr,
1513         .removexattr_fn = vfs_gluster_removexattr,
1514         .fremovexattr_fn = vfs_gluster_fremovexattr,
1515         .setxattr_fn = vfs_gluster_setxattr,
1516         .fsetxattr_fn = vfs_gluster_fsetxattr,
1517
1518         /* AIO Operations */
1519         .aio_force_fn = vfs_gluster_aio_force,
1520
1521         /* Durable handle Operations */
1522         .durable_cookie_fn = NULL,
1523         .durable_disconnect_fn = NULL,
1524         .durable_reconnect_fn = NULL,
1525 };
1526
1527 NTSTATUS vfs_glusterfs_init(TALLOC_CTX *);
1528 NTSTATUS vfs_glusterfs_init(TALLOC_CTX *ctx)
1529 {
1530         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1531                                 "glusterfs", &glusterfs_fns);
1532 }