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