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