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 "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 done:
 356         if (ret < 0) {
 357                 if (fs)
 358                         glfs_fini(fs);
 359         } else {
 360                 DBG_ERR("%s: Initialized volume from servers %s\n",
 361                         volume, volfile_servers);
 362                 handle->data = fs;
 363         }
 364         talloc_free(tmp_ctx);
 365         return ret;
 366 }
 367
 368 static void vfs_gluster_disconnect(struct vfs_handle_struct *handle)
 369 {
 370         glfs_t *fs = NULL;
 371
 372         fs = handle->data;
 373
 374         glfs_clear_preopened(fs);
 375 }
 376
 377 static uint64_t vfs_gluster_disk_free(struct vfs_handle_struct *handle,
 378                                       const char *path, uint64_t *bsize_p,
 379                                       uint64_t *dfree_p, uint64_t *dsize_p)
 380 {
 381         struct statvfs statvfs = { 0, };
 382         int ret;
 383
 384         ret = glfs_statvfs(handle->data, path, &statvfs);
 385         if (ret < 0) {
 386                 return -1;
 387         }
 388
 389         if (bsize_p != NULL) {
 390                 *bsize_p = (uint64_t)statvfs.f_bsize; /* Block size */
 391         }
 392         if (dfree_p != NULL) {
 393                 *dfree_p = (uint64_t)statvfs.f_bavail; /* Available Block units */
 394         }
 395         if (dsize_p != NULL) {
 396                 *dsize_p = (uint64_t)statvfs.f_blocks; /* Total Block units */
 397         }
 398
 399         return (uint64_t)statvfs.f_bavail;
 400 }
 401
 402 static int vfs_gluster_get_quota(struct vfs_handle_struct *handle,
 403                                  const char *path,
 404                                  enum SMB_QUOTA_TYPE qtype, unid_t id,
 405                                  SMB_DISK_QUOTA *qt)
 406 {
 407         errno = ENOSYS;
 408         return -1;
 409 }
 410
 411 static int
 412 vfs_gluster_set_quota(struct vfs_handle_struct *handle,
 413                       enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
 414 {
 415         errno = ENOSYS;
 416         return -1;
 417 }
 418
 419 static int vfs_gluster_statvfs(struct vfs_handle_struct *handle,
 420                                const char *path,
 421                                struct vfs_statvfs_struct *vfs_statvfs)
 422 {
 423         struct statvfs statvfs = { 0, };
 424         int ret;
 425
 426         ret = glfs_statvfs(handle->data, path, &statvfs);
 427         if (ret < 0) {
 428                 DEBUG(0, ("glfs_statvfs(%s) failed: %s\n",
 429                           path, strerror(errno)));
 430                 return -1;
 431         }
 432
 433         ZERO_STRUCTP(vfs_statvfs);
 434
 435         vfs_statvfs->OptimalTransferSize = statvfs.f_frsize;
 436         vfs_statvfs->BlockSize = statvfs.f_bsize;
 437         vfs_statvfs->TotalBlocks = statvfs.f_blocks;
 438         vfs_statvfs->BlocksAvail = statvfs.f_bfree;
 439         vfs_statvfs->UserBlocksAvail = statvfs.f_bavail;
 440         vfs_statvfs->TotalFileNodes = statvfs.f_files;
 441         vfs_statvfs->FreeFileNodes = statvfs.f_ffree;
 442         vfs_statvfs->FsIdentifier = statvfs.f_fsid;
 443         vfs_statvfs->FsCapabilities =
 444             FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
 445
 446         return ret;
 447 }
 448
 449 static uint32_t vfs_gluster_fs_capabilities(struct vfs_handle_struct *handle,
 450                                             enum timestamp_set_resolution *p_ts_res)
 451 {
 452         uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
 453
 454 #ifdef STAT_HAVE_NSEC
 455         *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
 456 #endif
 457
 458         return caps;
 459 }
 460
 461 static DIR *vfs_gluster_opendir(struct vfs_handle_struct *handle,
 462                                 const struct smb_filename *smb_fname,
 463                                 const char *mask,
 464                                 uint32_t attributes)
 465 {
 466         glfs_fd_t *fd;
 467
 468         fd = glfs_opendir(handle->data, smb_fname->base_name);
 469         if (fd == NULL) {
 470                 DEBUG(0, ("glfs_opendir(%s) failed: %s\n",
 471                           smb_fname->base_name, strerror(errno)));
 472         }
 473
 474         return (DIR *) fd;
 475 }
 476
 477 static DIR *vfs_gluster_fdopendir(struct vfs_handle_struct *handle,
 478                                   files_struct *fsp, const char *mask,
 479                                   uint32_t attributes)
 480 {
 481         return (DIR *) *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
 482 }
 483
 484 static int vfs_gluster_closedir(struct vfs_handle_struct *handle, DIR *dirp)
 485 {
 486         return glfs_closedir((void *)dirp);
 487 }
 488
 489 static struct dirent *vfs_gluster_readdir(struct vfs_handle_struct *handle,
 490                                           DIR *dirp, SMB_STRUCT_STAT *sbuf)
 491 {
 492         static char direntbuf[512];
 493         int ret;
 494         struct stat stat;
 495         struct dirent *dirent = 0;
 496
 497         if (sbuf != NULL) {
 498                 ret = glfs_readdirplus_r((void *)dirp, &stat, (void *)direntbuf,
 499                                          &dirent);
 500         } else {
 501                 ret = glfs_readdir_r((void *)dirp, (void *)direntbuf, &dirent);
 502         }
 503
 504         if ((ret < 0) || (dirent == NULL)) {
 505                 return NULL;
 506         }
 507
 508         if (sbuf != NULL) {
 509                 smb_stat_ex_from_stat(sbuf, &stat);
 510         }
 511
 512         return dirent;
 513 }
 514
 515 static long vfs_gluster_telldir(struct vfs_handle_struct *handle, DIR *dirp)
 516 {
 517         return glfs_telldir((void *)dirp);
 518 }
 519
 520 static void vfs_gluster_seekdir(struct vfs_handle_struct *handle, DIR *dirp,
 521                                 long offset)
 522 {
 523         glfs_seekdir((void *)dirp, offset);
 524 }
 525
 526 static void vfs_gluster_rewinddir(struct vfs_handle_struct *handle, DIR *dirp)
 527 {
 528         glfs_seekdir((void *)dirp, 0);
 529 }
 530
 531 static void vfs_gluster_init_search_op(struct vfs_handle_struct *handle,
 532                                        DIR *dirp)
 533 {
 534         return;
 535 }
 536
 537 static int vfs_gluster_mkdir(struct vfs_handle_struct *handle,
 538                              const struct smb_filename *smb_fname,
 539                              mode_t mode)
 540 {
 541         return glfs_mkdir(handle->data, smb_fname->base_name, mode);
 542 }
 543
 544 static int vfs_gluster_rmdir(struct vfs_handle_struct *handle,
 545                         const struct smb_filename *smb_fname)
 546 {
 547         return glfs_rmdir(handle->data, smb_fname->base_name);
 548 }
 549
 550 static int vfs_gluster_open(struct vfs_handle_struct *handle,
 551                             struct smb_filename *smb_fname, files_struct *fsp,
 552                             int flags, mode_t mode)
 553 {
 554         glfs_fd_t *glfd;
 555         glfs_fd_t **p_tmp;
 556
 557         if (flags & O_DIRECTORY) {
 558                 glfd = glfs_opendir(handle->data, smb_fname->base_name);
 559         } else if (flags & O_CREAT) {
 560                 glfd = glfs_creat(handle->data, smb_fname->base_name, flags,
 561                                   mode);
 562         } else {
 563                 glfd = glfs_open(handle->data, smb_fname->base_name, flags);
 564         }
 565
 566         if (glfd == NULL) {
 567                 return -1;
 568         }
 569         p_tmp = (glfs_fd_t **)VFS_ADD_FSP_EXTENSION(handle, fsp,
 570                                                           glfs_fd_t *, NULL);
 571         *p_tmp = glfd;
 572         /* An arbitrary value for error reporting, so you know its us. */
 573         return 13371337;
 574 }
 575
 576 static int vfs_gluster_close(struct vfs_handle_struct *handle,
 577                              files_struct *fsp)
 578 {
 579         glfs_fd_t *glfd;
 580         glfd = *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
 581         VFS_REMOVE_FSP_EXTENSION(handle, fsp);
 582         return glfs_close(glfd);
 583 }
 584
 585 static ssize_t vfs_gluster_read(struct vfs_handle_struct *handle,
 586                                 files_struct *fsp, void *data, size_t n)
 587 {
 588         return glfs_read(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, 0);
 589 }
 590
 591 static ssize_t vfs_gluster_pread(struct vfs_handle_struct *handle,
 592                                  files_struct *fsp, void *data, size_t n,
 593                                  off_t offset)
 594 {
 595         return glfs_pread(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, offset, 0);
 596 }
 597
 598 struct glusterfs_aio_state;
 599
 600 struct glusterfs_aio_wrapper {
 601         struct glusterfs_aio_state *state;
 602 };
 603
 604 struct glusterfs_aio_state {
 605         ssize_t ret;
 606         struct tevent_req *req;
 607         bool cancelled;
 608         struct vfs_aio_state vfs_aio_state;
 609         struct timespec start;
 610 };
 611
 612 static int aio_wrapper_destructor(struct glusterfs_aio_wrapper *wrap)
 613 {
 614         if (wrap->state != NULL) {
 615                 wrap->state->cancelled = true;
 616         }
 617
 618         return 0;
 619 }
 620
 621 /*
 622  * This function is the callback that will be called on glusterfs
 623  * threads once the async IO submitted is complete. To notify
 624  * Samba of the completion we use a pipe based queue.
 625  */
 626 static void aio_glusterfs_done(glfs_fd_t *fd, ssize_t ret, void *data)
 627 {
 628         struct glusterfs_aio_state *state = NULL;
 629         int sts = 0;
 630         struct timespec end;
 631
 632         state = (struct glusterfs_aio_state *)data;
 633
 634         PROFILE_TIMESTAMP(&end);
 635
 636         if (ret < 0) {
 637                 state->ret = -1;
 638                 state->vfs_aio_state.error = errno;
 639         } else {
 640                 state->ret = ret;
 641         }
 642         state->vfs_aio_state.duration = nsec_time_diff(&end, &state->start);
 643
 644         /*
 645          * Write the state pointer to glusterfs_aio_state to the
 646          * pipe, so we can call tevent_req_done() from the main thread,
 647          * because tevent_req_done() is not designed to be executed in
 648          * the multithread environment, so tevent_req_done() must be
 649          * executed from the smbd main thread.
 650          *
 651          * write(2) on pipes with sizes under _POSIX_PIPE_BUF
 652          * in size is atomic, without this, the use op pipes in this
 653          * code would not work.
 654          *
 655          * sys_write is a thin enough wrapper around write(2)
 656          * that we can trust it here.
 657          */
 658
 659         sts = sys_write(write_fd, &state, sizeof(struct glusterfs_aio_state *));
 660         if (sts < 0) {
 661                 DEBUG(0,("\nWrite to pipe failed (%s)", strerror(errno)));
 662         }
 663
 664         return;
 665 }
 666
 667 /*
 668  * Read each req off the pipe and process it.
 669  */
 670 static void aio_tevent_fd_done(struct tevent_context *event_ctx,
 671                                 struct tevent_fd *fde,
 672                                 uint16_t flags, void *data)
 673 {
 674         struct tevent_req *req = NULL;
 675         struct glusterfs_aio_state *state = NULL;
 676         int sts = 0;
 677
 678         /*
 679          * read(2) on pipes is atomic if the needed data is available
 680          * in the pipe, per SUS and POSIX.  Because we always write
 681          * to the pipe in sizeof(struct tevent_req *) chunks, we can
 682          * always read in those chunks, atomically.
 683          *
 684          * sys_read is a thin enough wrapper around read(2) that we
 685          * can trust it here.
 686          */
 687
 688         sts = sys_read(read_fd, &state, sizeof(struct glusterfs_aio_state *));
 689
 690         if (sts < 0) {
 691                 DEBUG(0,("\nRead from pipe failed (%s)", strerror(errno)));
 692         }
 693
 694         /* if we've cancelled the op, there is no req, so just clean up. */
 695         if (state->cancelled == true) {
 696                 TALLOC_FREE(state);
 697                 return;
 698         }
 699
 700         req = state->req;
 701
 702         if (req) {
 703                 tevent_req_done(req);
 704         }
 705         return;
 706 }
 707
 708 static bool init_gluster_aio(struct vfs_handle_struct *handle)
 709 {
 710         int fds[2];
 711         int ret = -1;
 712
 713         if (read_fd != -1) {
 714                 /*
 715                  * Already initialized.
 716                  */
 717                 return true;
 718         }
 719
 720         ret = pipe(fds);
 721         if (ret == -1) {
 722                 goto fail;
 723         }
 724
 725         read_fd = fds[0];
 726         write_fd = fds[1];
 727
 728         aio_read_event = tevent_add_fd(handle->conn->sconn->ev_ctx,
 729                                         NULL,
 730                                         read_fd,
 731                                         TEVENT_FD_READ,
 732                                         aio_tevent_fd_done,
 733                                         NULL);
 734         if (aio_read_event == NULL) {
 735                 goto fail;
 736         }
 737
 738         return true;
 739 fail:
 740         TALLOC_FREE(aio_read_event);
 741         if (read_fd != -1) {
 742                 close(read_fd);
 743                 close(write_fd);
 744                 read_fd = -1;
 745                 write_fd = -1;
 746         }
 747         return false;
 748 }
 749
 750 static struct glusterfs_aio_state *aio_state_create(TALLOC_CTX *mem_ctx)
 751 {
 752         struct tevent_req *req = NULL;
 753         struct glusterfs_aio_state *state = NULL;
 754         struct glusterfs_aio_wrapper *wrapper = NULL;
 755
 756         req = tevent_req_create(mem_ctx, &wrapper, struct glusterfs_aio_wrapper);
 757
 758         if (req == NULL) {
 759                 return NULL;
 760         }
 761
 762         state = talloc_zero(NULL, struct glusterfs_aio_state);
 763
 764         if (state == NULL) {
 765                 TALLOC_FREE(req);
 766                 return NULL;
 767         }
 768
 769         talloc_set_destructor(wrapper, aio_wrapper_destructor);
 770         state->cancelled = false;
 771         state->req = req;
 772
 773         wrapper->state = state;
 774
 775         return state;
 776 }
 777
 778 static struct tevent_req *vfs_gluster_pread_send(struct vfs_handle_struct
 779                                                   *handle, TALLOC_CTX *mem_ctx,
 780                                                   struct tevent_context *ev,
 781                                                   files_struct *fsp,
 782                                                   void *data, size_t n,
 783                                                   off_t offset)
 784 {
 785         struct glusterfs_aio_state *state = NULL;
 786         struct tevent_req *req = NULL;
 787         int ret = 0;
 788
 789         state = aio_state_create(mem_ctx);
 790
 791         if (state == NULL) {
 792                 return NULL;
 793         }
 794
 795         req = state->req;
 796
 797         if (!init_gluster_aio(handle)) {
 798                 tevent_req_error(req, EIO);
 799                 return tevent_req_post(req, ev);
 800         }
 801
 802         PROFILE_TIMESTAMP(&state->start);
 803         ret = glfs_pread_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
 804                                 fsp), data, n, offset, 0, aio_glusterfs_done,
 805                                 state);
 806         if (ret < 0) {
 807                 tevent_req_error(req, -ret);
 808                 return tevent_req_post(req, ev);
 809         }
 810
 811         return req;
 812 }
 813
 814 static struct tevent_req *vfs_gluster_pwrite_send(struct vfs_handle_struct
 815                                                   *handle, TALLOC_CTX *mem_ctx,
 816                                                   struct tevent_context *ev,
 817                                                   files_struct *fsp,
 818                                                   const void *data, size_t n,
 819                                                   off_t offset)
 820 {
 821         struct glusterfs_aio_state *state = NULL;
 822         struct tevent_req *req = NULL;
 823         int ret = 0;
 824
 825         state = aio_state_create(mem_ctx);
 826
 827         if (state == NULL) {
 828                 return NULL;
 829         }
 830
 831         req = state->req;
 832
 833         if (!init_gluster_aio(handle)) {
 834                 tevent_req_error(req, EIO);
 835                 return tevent_req_post(req, ev);
 836         }
 837
 838         PROFILE_TIMESTAMP(&state->start);
 839         ret = glfs_pwrite_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
 840                                 fsp), data, n, offset, 0, aio_glusterfs_done,
 841                                 state);
 842         if (ret < 0) {
 843                 tevent_req_error(req, -ret);
 844                 return tevent_req_post(req, ev);
 845         }
 846
 847         return req;
 848 }
 849
 850 static ssize_t vfs_gluster_recv(struct tevent_req *req,
 851                                 struct vfs_aio_state *vfs_aio_state)
 852 {
 853         struct glusterfs_aio_wrapper *wrapper = NULL;
 854         int ret = 0;
 855
 856         wrapper = tevent_req_data(req, struct glusterfs_aio_wrapper);
 857
 858         if (wrapper == NULL) {
 859                 return -1;
 860         }
 861
 862         if (wrapper->state == NULL) {
 863                 return -1;
 864         }
 865
 866         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
 867                 return -1;
 868         }
 869
 870         *vfs_aio_state = wrapper->state->vfs_aio_state;
 871         ret = wrapper->state->ret;
 872
 873         /* Clean up the state, it is in a NULL context. */
 874
 875         TALLOC_FREE(wrapper->state);
 876
 877         return ret;
 878 }
 879
 880 static ssize_t vfs_gluster_write(struct vfs_handle_struct *handle,
 881                                  files_struct *fsp, const void *data, size_t n)
 882 {
 883         return glfs_write(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, 0);
 884 }
 885
 886 static ssize_t vfs_gluster_pwrite(struct vfs_handle_struct *handle,
 887                                   files_struct *fsp, const void *data,
 888                                   size_t n, off_t offset)
 889 {
 890         return glfs_pwrite(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, offset, 0);
 891 }
 892
 893 static off_t vfs_gluster_lseek(struct vfs_handle_struct *handle,
 894                                files_struct *fsp, off_t offset, int whence)
 895 {
 896         return glfs_lseek(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), offset, whence);
 897 }
 898
 899 static ssize_t vfs_gluster_sendfile(struct vfs_handle_struct *handle, int tofd,
 900                                     files_struct *fromfsp,
 901                                     const DATA_BLOB *hdr,
 902                                     off_t offset, size_t n)
 903 {
 904         errno = ENOTSUP;
 905         return -1;
 906 }
 907
 908 static ssize_t vfs_gluster_recvfile(struct vfs_handle_struct *handle,
 909                                     int fromfd, files_struct *tofsp,
 910                                     off_t offset, size_t n)
 911 {
 912         errno = ENOTSUP;
 913         return -1;
 914 }
 915
 916 static int vfs_gluster_rename(struct vfs_handle_struct *handle,
 917                               const struct smb_filename *smb_fname_src,
 918                               const struct smb_filename *smb_fname_dst)
 919 {
 920         return glfs_rename(handle->data, smb_fname_src->base_name,
 921                            smb_fname_dst->base_name);
 922 }
 923
 924 static int vfs_gluster_fsync(struct vfs_handle_struct *handle,
 925                              files_struct *fsp)
 926 {
 927         return glfs_fsync(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp));
 928 }
 929
 930 static struct tevent_req *vfs_gluster_fsync_send(struct vfs_handle_struct
 931                                                  *handle, TALLOC_CTX *mem_ctx,
 932                                                  struct tevent_context *ev,
 933                                                  files_struct *fsp)
 934 {
 935         struct tevent_req *req = NULL;
 936         struct glusterfs_aio_state *state = NULL;
 937         int ret = 0;
 938
 939         state = aio_state_create(mem_ctx);
 940
 941         if (state == NULL) {
 942                 return NULL;
 943         }
 944
 945         req = state->req;
 946
 947         if (!init_gluster_aio(handle)) {
 948                 tevent_req_error(req, EIO);
 949                 return tevent_req_post(req, ev);
 950         }
 951
 952         PROFILE_TIMESTAMP(&state->start);
 953         ret = glfs_fsync_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
 954                                 fsp), aio_glusterfs_done, req);
 955         if (ret < 0) {
 956                 tevent_req_error(req, -ret);
 957                 return tevent_req_post(req, ev);
 958         }
 959         return req;
 960 }
 961
 962 static int vfs_gluster_fsync_recv(struct tevent_req *req,
 963                                   struct vfs_aio_state *vfs_aio_state)
 964 {
 965         /*
 966          * Use implicit conversion ssize_t->int
 967          */
 968         return vfs_gluster_recv(req, vfs_aio_state);
 969 }
 970
 971 static int vfs_gluster_stat(struct vfs_handle_struct *handle,
 972                             struct smb_filename *smb_fname)
 973 {
 974         struct stat st;
 975         int ret;
 976
 977         ret = glfs_stat(handle->data, smb_fname->base_name, &st);
 978         if (ret == 0) {
 979                 smb_stat_ex_from_stat(&smb_fname->st, &st);
 980         }
 981         if (ret < 0 && errno != ENOENT) {
 982                 DEBUG(0, ("glfs_stat(%s) failed: %s\n",
 983                           smb_fname->base_name, strerror(errno)));
 984         }
 985         return ret;
 986 }
 987
 988 static int vfs_gluster_fstat(struct vfs_handle_struct *handle,
 989                              files_struct *fsp, SMB_STRUCT_STAT *sbuf)
 990 {
 991         struct stat st;
 992         int ret;
 993
 994         ret = glfs_fstat(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), &st);
 995         if (ret == 0) {
 996                 smb_stat_ex_from_stat(sbuf, &st);
 997         }
 998         if (ret < 0) {
 999                 DEBUG(0, ("glfs_fstat(%d) failed: %s\n",
1000                           fsp->fh->fd, strerror(errno)));
1001         }
1002         return ret;
1003 }
1004
1005 static int vfs_gluster_lstat(struct vfs_handle_struct *handle,
1006                              struct smb_filename *smb_fname)
1007 {
1008         struct stat st;
1009         int ret;
1010
1011         ret = glfs_lstat(handle->data, smb_fname->base_name, &st);
1012         if (ret == 0) {
1013                 smb_stat_ex_from_stat(&smb_fname->st, &st);
1014         }
1015         if (ret < 0 && errno != ENOENT) {
1016                 DEBUG(0, ("glfs_lstat(%s) failed: %s\n",
1017                           smb_fname->base_name, strerror(errno)));
1018         }
1019         return ret;
1020 }
1021
1022 static uint64_t vfs_gluster_get_alloc_size(struct vfs_handle_struct *handle,
1023                                            files_struct *fsp,
1024                                            const SMB_STRUCT_STAT *sbuf)
1025 {
1026         return sbuf->st_ex_blocks * 512;
1027 }
1028
1029 static int vfs_gluster_unlink(struct vfs_handle_struct *handle,
1030                               const struct smb_filename *smb_fname)
1031 {
1032         return glfs_unlink(handle->data, smb_fname->base_name);
1033 }
1034
1035 static int vfs_gluster_chmod(struct vfs_handle_struct *handle,
1036                                 const struct smb_filename *smb_fname,
1037                                 mode_t mode)
1038 {
1039         return glfs_chmod(handle->data, smb_fname->base_name, mode);
1040 }
1041
1042 static int vfs_gluster_fchmod(struct vfs_handle_struct *handle,
1043                               files_struct *fsp, mode_t mode)
1044 {
1045         return glfs_fchmod(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), mode);
1046 }
1047
1048 static int vfs_gluster_chown(struct vfs_handle_struct *handle,
1049                         const struct smb_filename *smb_fname,
1050                         uid_t uid,
1051                         gid_t gid)
1052 {
1053         return glfs_chown(handle->data, smb_fname->base_name, uid, gid);
1054 }
1055
1056 static int vfs_gluster_fchown(struct vfs_handle_struct *handle,
1057                               files_struct *fsp, uid_t uid, gid_t gid)
1058 {
1059         return glfs_fchown(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), uid, gid);
1060 }
1061
1062 static int vfs_gluster_lchown(struct vfs_handle_struct *handle,
1063                         const struct smb_filename *smb_fname,
1064                         uid_t uid,
1065                         gid_t gid)
1066 {
1067         return glfs_lchown(handle->data, smb_fname->base_name, uid, gid);
1068 }
1069
1070 static int vfs_gluster_chdir(struct vfs_handle_struct *handle, const char *path)
1071 {
1072         return glfs_chdir(handle->data, path);
1073 }
1074
1075 static char *vfs_gluster_getwd(struct vfs_handle_struct *handle)
1076 {
1077         char *cwd;
1078         char *ret;
1079
1080         cwd = SMB_CALLOC_ARRAY(char, PATH_MAX);
1081         if (cwd == NULL) {
1082                 return NULL;
1083         }
1084
1085         ret = glfs_getcwd(handle->data, cwd, PATH_MAX - 1);
1086         if (ret == 0) {
1087                 free(cwd);
1088         }
1089         return ret;
1090 }
1091
1092 static int vfs_gluster_ntimes(struct vfs_handle_struct *handle,
1093                               const struct smb_filename *smb_fname,
1094                               struct smb_file_time *ft)
1095 {
1096         struct timespec times[2];
1097
1098         if (null_timespec(ft->atime)) {
1099                 times[0].tv_sec = smb_fname->st.st_ex_atime.tv_sec;
1100                 times[0].tv_nsec = smb_fname->st.st_ex_atime.tv_nsec;
1101         } else {
1102                 times[0].tv_sec = ft->atime.tv_sec;
1103                 times[0].tv_nsec = ft->atime.tv_nsec;
1104         }
1105
1106         if (null_timespec(ft->mtime)) {
1107                 times[1].tv_sec = smb_fname->st.st_ex_mtime.tv_sec;
1108                 times[1].tv_nsec = smb_fname->st.st_ex_mtime.tv_nsec;
1109         } else {
1110                 times[1].tv_sec = ft->mtime.tv_sec;
1111                 times[1].tv_nsec = ft->mtime.tv_nsec;
1112         }
1113
1114         if ((timespec_compare(&times[0],
1115                               &smb_fname->st.st_ex_atime) == 0) &&
1116             (timespec_compare(&times[1],
1117                               &smb_fname->st.st_ex_mtime) == 0)) {
1118                 return 0;
1119         }
1120
1121         return glfs_utimens(handle->data, smb_fname->base_name, times);
1122 }
1123
1124 static int vfs_gluster_ftruncate(struct vfs_handle_struct *handle,
1125                                  files_struct *fsp, off_t offset)
1126 {
1127         return glfs_ftruncate(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), offset);
1128 }
1129
1130 static int vfs_gluster_fallocate(struct vfs_handle_struct *handle,
1131                                  struct files_struct *fsp,
1132                                  uint32_t mode,
1133                                  off_t offset, off_t len)
1134 {
1135         /* TODO: add support using glfs_fallocate() and glfs_zerofill() */
1136         errno = ENOTSUP;
1137         return -1;
1138 }
1139
1140 static char *vfs_gluster_realpath(struct vfs_handle_struct *handle,
1141                                   const char *path)
1142 {
1143         char *result = NULL;
1144         char *resolved_path = SMB_MALLOC_ARRAY(char, PATH_MAX+1);
1145
1146         if (resolved_path == NULL) {
1147                 errno = ENOMEM;
1148                 return NULL;
1149         }
1150
1151         result = glfs_realpath(handle->data, path, resolved_path);
1152         if (result == NULL) {
1153                 SAFE_FREE(resolved_path);
1154         }
1155
1156         return result;
1157 }
1158
1159 static bool vfs_gluster_lock(struct vfs_handle_struct *handle,
1160                              files_struct *fsp, int op, off_t offset,
1161                              off_t count, int type)
1162 {
1163         struct flock flock = { 0, };
1164         int ret;
1165
1166         flock.l_type = type;
1167         flock.l_whence = SEEK_SET;
1168         flock.l_start = offset;
1169         flock.l_len = count;
1170         flock.l_pid = 0;
1171
1172         ret = glfs_posix_lock(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), op, &flock);
1173
1174         if (op == F_GETLK) {
1175                 /* lock query, true if someone else has locked */
1176                 if ((ret != -1) &&
1177                     (flock.l_type != F_UNLCK) &&
1178                     (flock.l_pid != 0) && (flock.l_pid != getpid()))
1179                         return true;
1180                 /* not me */
1181                 return false;
1182         }
1183
1184         if (ret == -1) {
1185                 return false;
1186         }
1187
1188         return true;
1189 }
1190
1191 static int vfs_gluster_kernel_flock(struct vfs_handle_struct *handle,
1192                                     files_struct *fsp, uint32_t share_mode,
1193                                     uint32_t access_mask)
1194 {
1195         errno = ENOSYS;
1196         return -1;
1197 }
1198
1199 static int vfs_gluster_linux_setlease(struct vfs_handle_struct *handle,
1200                                       files_struct *fsp, int leasetype)
1201 {
1202         errno = ENOSYS;
1203         return -1;
1204 }
1205
1206 static bool vfs_gluster_getlock(struct vfs_handle_struct *handle,
1207                                 files_struct *fsp, off_t *poffset,
1208                                 off_t *pcount, int *ptype, pid_t *ppid)
1209 {
1210         struct flock flock = { 0, };
1211         int ret;
1212
1213         flock.l_type = *ptype;
1214         flock.l_whence = SEEK_SET;
1215         flock.l_start = *poffset;
1216         flock.l_len = *pcount;
1217         flock.l_pid = 0;
1218
1219         ret = glfs_posix_lock(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), F_GETLK, &flock);
1220
1221         if (ret == -1) {
1222                 return false;
1223         }
1224
1225         *ptype = flock.l_type;
1226         *poffset = flock.l_start;
1227         *pcount = flock.l_len;
1228         *ppid = flock.l_pid;
1229
1230         return true;
1231 }
1232
1233 static int vfs_gluster_symlink(struct vfs_handle_struct *handle,
1234                                const char *oldpath, const char *newpath)
1235 {
1236         return glfs_symlink(handle->data, oldpath, newpath);
1237 }
1238
1239 static int vfs_gluster_readlink(struct vfs_handle_struct *handle,
1240                                 const char *path, char *buf, size_t bufsiz)
1241 {
1242         return glfs_readlink(handle->data, path, buf, bufsiz);
1243 }
1244
1245 static int vfs_gluster_link(struct vfs_handle_struct *handle,
1246                             const char *oldpath, const char *newpath)
1247 {
1248         return glfs_link(handle->data, oldpath, newpath);
1249 }
1250
1251 static int vfs_gluster_mknod(struct vfs_handle_struct *handle, const char *path,
1252                              mode_t mode, SMB_DEV_T dev)
1253 {
1254         return glfs_mknod(handle->data, path, mode, dev);
1255 }
1256
1257 static int vfs_gluster_chflags(struct vfs_handle_struct *handle,
1258                                const char *path, unsigned int flags)
1259 {
1260         errno = ENOSYS;
1261         return -1;
1262 }
1263
1264 static int vfs_gluster_get_real_filename(struct vfs_handle_struct *handle,
1265                                          const char *path, const char *name,
1266                                          TALLOC_CTX *mem_ctx, char **found_name)
1267 {
1268         int ret;
1269         char key_buf[NAME_MAX + 64];
1270         char val_buf[NAME_MAX + 1];
1271
1272         if (strlen(name) >= NAME_MAX) {
1273                 errno = ENAMETOOLONG;
1274                 return -1;
1275         }
1276
1277         snprintf(key_buf, NAME_MAX + 64,
1278                  "glusterfs.get_real_filename:%s", name);
1279
1280         ret = glfs_getxattr(handle->data, path, key_buf, val_buf, NAME_MAX + 1);
1281         if (ret == -1) {
1282                 if (errno == ENODATA) {
1283                         errno = EOPNOTSUPP;
1284                 }
1285                 return -1;
1286         }
1287
1288         *found_name = talloc_strdup(mem_ctx, val_buf);
1289         if (found_name[0] == NULL) {
1290                 errno = ENOMEM;
1291                 return -1;
1292         }
1293         return 0;
1294 }
1295
1296 static const char *vfs_gluster_connectpath(struct vfs_handle_struct *handle,
1297                                            const char *filename)
1298 {
1299         return handle->conn->connectpath;
1300 }
1301
1302 /* EA Operations */
1303
1304 static ssize_t vfs_gluster_getxattr(struct vfs_handle_struct *handle,
1305                                     const char *path, const char *name,
1306                                     void *value, size_t size)
1307 {
1308         return glfs_getxattr(handle->data, path, name, value, size);
1309 }
1310
1311 static ssize_t vfs_gluster_fgetxattr(struct vfs_handle_struct *handle,
1312                                      files_struct *fsp, const char *name,
1313                                      void *value, size_t size)
1314 {
1315         return glfs_fgetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name, value, size);
1316 }
1317
1318 static ssize_t vfs_gluster_listxattr(struct vfs_handle_struct *handle,
1319                                      const char *path, char *list, size_t size)
1320 {
1321         return glfs_listxattr(handle->data, path, list, size);
1322 }
1323
1324 static ssize_t vfs_gluster_flistxattr(struct vfs_handle_struct *handle,
1325                                       files_struct *fsp, char *list,
1326                                       size_t size)
1327 {
1328         return glfs_flistxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), list, size);
1329 }
1330
1331 static int vfs_gluster_removexattr(struct vfs_handle_struct *handle,
1332                                    const char *path, const char *name)
1333 {
1334         return glfs_removexattr(handle->data, path, name);
1335 }
1336
1337 static int vfs_gluster_fremovexattr(struct vfs_handle_struct *handle,
1338                                     files_struct *fsp, const char *name)
1339 {
1340         return glfs_fremovexattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name);
1341 }
1342
1343 static int vfs_gluster_setxattr(struct vfs_handle_struct *handle,
1344                                 const char *path, const char *name,
1345                                 const void *value, size_t size, int flags)
1346 {
1347         return glfs_setxattr(handle->data, path, name, value, size, flags);
1348 }
1349
1350 static int vfs_gluster_fsetxattr(struct vfs_handle_struct *handle,
1351                                  files_struct *fsp, const char *name,
1352                                  const void *value, size_t size, int flags)
1353 {
1354         return glfs_fsetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name, value, size,
1355                               flags);
1356 }
1357
1358 /* AIO Operations */
1359
1360 static bool vfs_gluster_aio_force(struct vfs_handle_struct *handle,
1361                                   files_struct *fsp)
1362 {
1363         return false;
1364 }
1365
1366 static struct vfs_fn_pointers glusterfs_fns = {
1367
1368         /* Disk Operations */
1369
1370         .connect_fn = vfs_gluster_connect,
1371         .disconnect_fn = vfs_gluster_disconnect,
1372         .disk_free_fn = vfs_gluster_disk_free,
1373         .get_quota_fn = vfs_gluster_get_quota,
1374         .set_quota_fn = vfs_gluster_set_quota,
1375         .statvfs_fn = vfs_gluster_statvfs,
1376         .fs_capabilities_fn = vfs_gluster_fs_capabilities,
1377
1378         .get_dfs_referrals_fn = NULL,
1379
1380         /* Directory Operations */
1381
1382         .opendir_fn = vfs_gluster_opendir,
1383         .fdopendir_fn = vfs_gluster_fdopendir,
1384         .readdir_fn = vfs_gluster_readdir,
1385         .seekdir_fn = vfs_gluster_seekdir,
1386         .telldir_fn = vfs_gluster_telldir,
1387         .rewind_dir_fn = vfs_gluster_rewinddir,
1388         .mkdir_fn = vfs_gluster_mkdir,
1389         .rmdir_fn = vfs_gluster_rmdir,
1390         .closedir_fn = vfs_gluster_closedir,
1391         .init_search_op_fn = vfs_gluster_init_search_op,
1392
1393         /* File Operations */
1394
1395         .open_fn = vfs_gluster_open,
1396         .create_file_fn = NULL,
1397         .close_fn = vfs_gluster_close,
1398         .read_fn = vfs_gluster_read,
1399         .pread_fn = vfs_gluster_pread,
1400         .pread_send_fn = vfs_gluster_pread_send,
1401         .pread_recv_fn = vfs_gluster_recv,
1402         .write_fn = vfs_gluster_write,
1403         .pwrite_fn = vfs_gluster_pwrite,
1404         .pwrite_send_fn = vfs_gluster_pwrite_send,
1405         .pwrite_recv_fn = vfs_gluster_recv,
1406         .lseek_fn = vfs_gluster_lseek,
1407         .sendfile_fn = vfs_gluster_sendfile,
1408         .recvfile_fn = vfs_gluster_recvfile,
1409         .rename_fn = vfs_gluster_rename,
1410         .fsync_fn = vfs_gluster_fsync,
1411         .fsync_send_fn = vfs_gluster_fsync_send,
1412         .fsync_recv_fn = vfs_gluster_fsync_recv,
1413
1414         .stat_fn = vfs_gluster_stat,
1415         .fstat_fn = vfs_gluster_fstat,
1416         .lstat_fn = vfs_gluster_lstat,
1417         .get_alloc_size_fn = vfs_gluster_get_alloc_size,
1418         .unlink_fn = vfs_gluster_unlink,
1419
1420         .chmod_fn = vfs_gluster_chmod,
1421         .fchmod_fn = vfs_gluster_fchmod,
1422         .chown_fn = vfs_gluster_chown,
1423         .fchown_fn = vfs_gluster_fchown,
1424         .lchown_fn = vfs_gluster_lchown,
1425         .chdir_fn = vfs_gluster_chdir,
1426         .getwd_fn = vfs_gluster_getwd,
1427         .ntimes_fn = vfs_gluster_ntimes,
1428         .ftruncate_fn = vfs_gluster_ftruncate,
1429         .fallocate_fn = vfs_gluster_fallocate,
1430         .lock_fn = vfs_gluster_lock,
1431         .kernel_flock_fn = vfs_gluster_kernel_flock,
1432         .linux_setlease_fn = vfs_gluster_linux_setlease,
1433         .getlock_fn = vfs_gluster_getlock,
1434         .symlink_fn = vfs_gluster_symlink,
1435         .readlink_fn = vfs_gluster_readlink,
1436         .link_fn = vfs_gluster_link,
1437         .mknod_fn = vfs_gluster_mknod,
1438         .realpath_fn = vfs_gluster_realpath,
1439         .chflags_fn = vfs_gluster_chflags,
1440         .file_id_create_fn = NULL,
1441         .copy_chunk_send_fn = NULL,
1442         .copy_chunk_recv_fn = NULL,
1443         .streaminfo_fn = NULL,
1444         .get_real_filename_fn = vfs_gluster_get_real_filename,
1445         .connectpath_fn = vfs_gluster_connectpath,
1446
1447         .brl_lock_windows_fn = NULL,
1448         .brl_unlock_windows_fn = NULL,
1449         .brl_cancel_windows_fn = NULL,
1450         .strict_lock_fn = NULL,
1451         .strict_unlock_fn = NULL,
1452         .translate_name_fn = NULL,
1453         .fsctl_fn = NULL,
1454
1455         /* NT ACL Operations */
1456         .fget_nt_acl_fn = NULL,
1457         .get_nt_acl_fn = NULL,
1458         .fset_nt_acl_fn = NULL,
1459         .audit_file_fn = NULL,
1460
1461         /* Posix ACL Operations */
1462         .chmod_acl_fn = NULL,   /* passthrough to default */
1463         .fchmod_acl_fn = NULL,  /* passthrough to default */
1464         .sys_acl_get_file_fn = posixacl_xattr_acl_get_file,
1465         .sys_acl_get_fd_fn = posixacl_xattr_acl_get_fd,
1466         .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
1467         .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
1468         .sys_acl_set_file_fn = posixacl_xattr_acl_set_file,
1469         .sys_acl_set_fd_fn = posixacl_xattr_acl_set_fd,
1470         .sys_acl_delete_def_file_fn = posixacl_xattr_acl_delete_def_file,
1471
1472         /* EA Operations */
1473         .getxattr_fn = vfs_gluster_getxattr,
1474         .fgetxattr_fn = vfs_gluster_fgetxattr,
1475         .listxattr_fn = vfs_gluster_listxattr,
1476         .flistxattr_fn = vfs_gluster_flistxattr,
1477         .removexattr_fn = vfs_gluster_removexattr,
1478         .fremovexattr_fn = vfs_gluster_fremovexattr,
1479         .setxattr_fn = vfs_gluster_setxattr,
1480         .fsetxattr_fn = vfs_gluster_fsetxattr,
1481
1482         /* AIO Operations */
1483         .aio_force_fn = vfs_gluster_aio_force,
1484
1485         /* Durable handle Operations */
1486         .durable_cookie_fn = NULL,
1487         .durable_disconnect_fn = NULL,
1488         .durable_reconnect_fn = NULL,
1489 };
1490
1491 NTSTATUS vfs_glusterfs_init(TALLOC_CTX *);
1492 NTSTATUS vfs_glusterfs_init(TALLOC_CTX *ctx)
1493 {
1494         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1495                                 "glusterfs", &glusterfs_fns);
1496 }