source3/modules/vfs_glusterfs.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Wrap GlusterFS GFAPI calls in vfs functions.
   5
   6    Copyright (c) 2013 Anand Avati <avati@redhat.com>
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 /**
  23  * @file   vfs_glusterfs.c
  24  * @author Anand Avati <avati@redhat.com>
  25  * @date   May 2013
  26  * @brief  Samba VFS module for glusterfs
  27  *
  28  * @todo
  29  *   - sendfile/recvfile support
  30  *
  31  * A Samba VFS module for GlusterFS, based on Gluster's libgfapi.
  32  * This is a "bottom" vfs module (not something to be stacked on top of
  33  * another module), and translates (most) calls to the closest actions
  34  * available in libgfapi.
  35  *
  36  */
  37
  38 #include "includes.h"
  39 #include "smbd/smbd.h"
  40 #include <stdio.h>
  41 #include <glusterfs/api/glfs.h>
  42 #include "lib/util/dlinklist.h"
  43 #include "lib/util/tevent_unix.h"
  44 #include "smbd/globals.h"
  45 #include "lib/util/sys_rw.h"
  46 #include "smbprofile.h"
  47 #include "modules/posixacl_xattr.h"
  48 #include "lib/pthreadpool/pthreadpool_tevent.h"
  49
  50 #define DEFAULT_VOLFILE_SERVER "localhost"
  51 #define GLUSTER_NAME_MAX 255
  52
  53 /**
  54  * Helper to convert struct stat to struct stat_ex.
  55  */
  56 static void smb_stat_ex_from_stat(struct stat_ex *dst, const struct stat *src)
  57 {
  58         ZERO_STRUCTP(dst);
  59
  60         dst->st_ex_dev = src->st_dev;
  61         dst->st_ex_ino = src->st_ino;
  62         dst->st_ex_mode = src->st_mode;
  63         dst->st_ex_nlink = src->st_nlink;
  64         dst->st_ex_uid = src->st_uid;
  65         dst->st_ex_gid = src->st_gid;
  66         dst->st_ex_rdev = src->st_rdev;
  67         dst->st_ex_size = src->st_size;
  68         dst->st_ex_atime.tv_sec = src->st_atime;
  69         dst->st_ex_mtime.tv_sec = src->st_mtime;
  70         dst->st_ex_ctime.tv_sec = src->st_ctime;
  71         dst->st_ex_btime.tv_sec = src->st_mtime;
  72         dst->st_ex_blksize = src->st_blksize;
  73         dst->st_ex_blocks = src->st_blocks;
  74         dst->st_ex_file_id = dst->st_ex_ino;
  75         dst->st_ex_iflags |= ST_EX_IFLAG_CALCULATED_FILE_ID;
  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         dst->st_ex_itime = dst->st_ex_btime;
  83         dst->st_ex_iflags |= ST_EX_IFLAG_CALCULATED_ITIME;
  84 }
  85
  86 /* pre-opened glfs_t */
  87
  88 static struct glfs_preopened {
  89         char *volume;
  90         char *connectpath;
  91         glfs_t *fs;
  92         int ref;
  93         struct glfs_preopened *next, *prev;
  94 } *glfs_preopened;
  95
  96
  97 static int glfs_set_preopened(const char *volume, const char *connectpath, glfs_t *fs)
  98 {
  99         struct glfs_preopened *entry = NULL;
 100
 101         entry = talloc_zero(NULL, struct glfs_preopened);
 102         if (!entry) {
 103                 errno = ENOMEM;
 104                 return -1;
 105         }
 106
 107         entry->volume = talloc_strdup(entry, volume);
 108         if (!entry->volume) {
 109                 talloc_free(entry);
 110                 errno = ENOMEM;
 111                 return -1;
 112         }
 113
 114         entry->connectpath = talloc_strdup(entry, connectpath);
 115         if (entry->connectpath == NULL) {
 116                 talloc_free(entry);
 117                 errno = ENOMEM;
 118                 return -1;
 119         }
 120
 121         entry->fs = fs;
 122         entry->ref = 1;
 123
 124         DLIST_ADD(glfs_preopened, entry);
 125
 126         return 0;
 127 }
 128
 129 static glfs_t *glfs_find_preopened(const char *volume, const char *connectpath)
 130 {
 131         struct glfs_preopened *entry = NULL;
 132
 133         for (entry = glfs_preopened; entry; entry = entry->next) {
 134                 if (strcmp(entry->volume, volume) == 0 &&
 135                     strcmp(entry->connectpath, connectpath) == 0)
 136                 {
 137                         entry->ref++;
 138                         return entry->fs;
 139                 }
 140         }
 141
 142         return NULL;
 143 }
 144
 145 static void glfs_clear_preopened(glfs_t *fs)
 146 {
 147         struct glfs_preopened *entry = NULL;
 148
 149         for (entry = glfs_preopened; entry; entry = entry->next) {
 150                 if (entry->fs == fs) {
 151                         if (--entry->ref)
 152                                 return;
 153
 154                         DLIST_REMOVE(glfs_preopened, entry);
 155
 156                         glfs_fini(entry->fs);
 157                         talloc_free(entry);
 158                 }
 159         }
 160 }
 161
 162 static int vfs_gluster_set_volfile_servers(glfs_t *fs,
 163                                            const char *volfile_servers)
 164 {
 165         char *server = NULL;
 166         size_t server_count = 0;
 167         size_t server_success = 0;
 168         int   ret = -1;
 169         TALLOC_CTX *frame = talloc_stackframe();
 170
 171         DBG_INFO("servers list %s\n", volfile_servers);
 172
 173         while (next_token_talloc(frame, &volfile_servers, &server, " \t")) {
 174                 char *transport = NULL;
 175                 char *host = NULL;
 176                 int   port = 0;
 177
 178                 server_count++;
 179                 DBG_INFO("server %zu %s\n", server_count, server);
 180
 181                 /* Determine the transport type */
 182                 if (strncmp(server, "unix+", 5) == 0) {
 183                         port = 0;
 184                         transport = talloc_strdup(frame, "unix");
 185                         if (!transport) {
 186                                 errno = ENOMEM;
 187                                 goto out;
 188                         }
 189                         host = talloc_strdup(frame, server + 5);
 190                         if (!host) {
 191                                 errno = ENOMEM;
 192                                 goto out;
 193                         }
 194                 } else {
 195                         char *p = NULL;
 196                         char *port_index = NULL;
 197
 198                         if (strncmp(server, "tcp+", 4) == 0) {
 199                                 server += 4;
 200                         }
 201
 202                         /* IPv6 is enclosed in []
 203                          * ':' before ']' is part of IPv6
 204                          * ':' after  ']' indicates port
 205                          */
 206                         p = server;
 207                         if (server[0] == '[') {
 208                                 server++;
 209                                 p = index(server, ']');
 210                                 if (p == NULL) {
 211                                         /* Malformed IPv6 */
 212                                         continue;
 213                                 }
 214                                 p[0] = '\0';
 215                                 p++;
 216                         }
 217
 218                         port_index = index(p, ':');
 219
 220                         if (port_index == NULL) {
 221                                 port = 0;
 222                         } else {
 223                                 port = atoi(port_index + 1);
 224                                 port_index[0] = '\0';
 225                         }
 226                         transport = talloc_strdup(frame, "tcp");
 227                         if (!transport) {
 228                                 errno = ENOMEM;
 229                                 goto out;
 230                         }
 231                         host = talloc_strdup(frame, server);
 232                         if (!host) {
 233                                 errno = ENOMEM;
 234                                 goto out;
 235                         }
 236                 }
 237
 238                 DBG_INFO("Calling set volfile server with params "
 239                          "transport=%s, host=%s, port=%d\n", transport,
 240                           host, port);
 241
 242                 ret = glfs_set_volfile_server(fs, transport, host, port);
 243                 if (ret < 0) {
 244                         DBG_WARNING("Failed to set volfile_server "
 245                                     "transport=%s, host=%s, port=%d (%s)\n",
 246                                     transport, host, port, strerror(errno));
 247                 } else {
 248                         server_success++;
 249                 }
 250         }
 251
 252 out:
 253         if (server_count == 0) {
 254                 ret = -1;
 255         } else if (server_success < server_count) {
 256                 DBG_WARNING("Failed to set %zu out of %zu servers parsed\n",
 257                             server_count - server_success, server_count);
 258                 ret = 0;
 259         }
 260
 261         TALLOC_FREE(frame);
 262         return ret;
 263 }
 264
 265 /* Disk Operations */
 266
 267 static int vfs_gluster_connect(struct vfs_handle_struct *handle,
 268                                const char *service,
 269                                const char *user)
 270 {
 271         const struct loadparm_substitution *lp_sub =
 272                 loadparm_s3_global_substitution();
 273         const char *volfile_servers;
 274         const char *volume;
 275         char *logfile;
 276         int loglevel;
 277         glfs_t *fs = NULL;
 278         TALLOC_CTX *tmp_ctx;
 279         int ret = 0;
 280
 281         tmp_ctx = talloc_new(NULL);
 282         if (tmp_ctx == NULL) {
 283                 ret = -1;
 284                 goto done;
 285         }
 286         logfile = lp_parm_substituted_string(tmp_ctx,
 287                                              lp_sub,
 288                                              SNUM(handle->conn),
 289                                              "glusterfs",
 290                                              "logfile",
 291                                              NULL);
 292
 293         loglevel = lp_parm_int(SNUM(handle->conn), "glusterfs", "loglevel", -1);
 294
 295         volfile_servers = lp_parm_substituted_string(tmp_ctx,
 296                                                      lp_sub,
 297                                                      SNUM(handle->conn),
 298                                                      "glusterfs",
 299                                                      "volfile_server",
 300                                                      NULL);
 301         if (volfile_servers == NULL) {
 302                 volfile_servers = DEFAULT_VOLFILE_SERVER;
 303         }
 304
 305         volume = lp_parm_const_string(SNUM(handle->conn), "glusterfs", "volume",
 306                                       NULL);
 307         if (volume == NULL) {
 308                 volume = service;
 309         }
 310
 311         fs = glfs_find_preopened(volume, handle->conn->connectpath);
 312         if (fs) {
 313                 goto done;
 314         }
 315
 316         fs = glfs_new(volume);
 317         if (fs == NULL) {
 318                 ret = -1;
 319                 goto done;
 320         }
 321
 322         ret = vfs_gluster_set_volfile_servers(fs, volfile_servers);
 323         if (ret < 0) {
 324                 DBG_ERR("Failed to set volfile_servers from list %s\n",
 325                         volfile_servers);
 326                 goto done;
 327         }
 328
 329         ret = glfs_set_xlator_option(fs, "*-md-cache", "cache-posix-acl",
 330                                      "true");
 331         if (ret < 0) {
 332                 DEBUG(0, ("%s: Failed to set xlator options\n", volume));
 333                 goto done;
 334         }
 335
 336
 337         ret = glfs_set_xlator_option(fs, "*-snapview-client",
 338                                      "snapdir-entry-path",
 339                                      handle->conn->connectpath);
 340         if (ret < 0) {
 341                 DEBUG(0, ("%s: Failed to set xlator option:"
 342                           " snapdir-entry-path\n", volume));
 343                 goto done;
 344         }
 345
 346         ret = glfs_set_logging(fs, logfile, loglevel);
 347         if (ret < 0) {
 348                 DEBUG(0, ("%s: Failed to set logfile %s loglevel %d\n",
 349                           volume, logfile, loglevel));
 350                 goto done;
 351         }
 352
 353         ret = glfs_init(fs);
 354         if (ret < 0) {
 355                 DEBUG(0, ("%s: Failed to initialize volume (%s)\n",
 356                           volume, strerror(errno)));
 357                 goto done;
 358         }
 359
 360         ret = glfs_set_preopened(volume, handle->conn->connectpath, fs);
 361         if (ret < 0) {
 362                 DEBUG(0, ("%s: Failed to register volume (%s)\n",
 363                           volume, strerror(errno)));
 364                 goto done;
 365         }
 366
 367         /*
 368          * The shadow_copy2 module will fail to export subdirectories
 369          * of a gluster volume unless we specify the mount point,
 370          * because the detection fails if the file system is not
 371          * locally mounted:
 372          * https://bugzilla.samba.org/show_bug.cgi?id=13091
 373          */
 374         lp_do_parameter(SNUM(handle->conn), "shadow:mountpoint", "/");
 375
 376         /*
 377          * Unless we have an async implementation of getxattrat turn this off.
 378          */
 379         lp_do_parameter(SNUM(handle->conn), "smbd async dosmode", "false");
 380
 381 done:
 382         if (ret < 0) {
 383                 if (fs)
 384                         glfs_fini(fs);
 385         } else {
 386                 DBG_ERR("%s: Initialized volume from servers %s\n",
 387                         volume, volfile_servers);
 388                 handle->data = fs;
 389         }
 390         talloc_free(tmp_ctx);
 391         return ret;
 392 }
 393
 394 static void vfs_gluster_disconnect(struct vfs_handle_struct *handle)
 395 {
 396         glfs_t *fs = NULL;
 397
 398         fs = handle->data;
 399
 400         glfs_clear_preopened(fs);
 401 }
 402
 403 static uint64_t vfs_gluster_disk_free(struct vfs_handle_struct *handle,
 404                                 const struct smb_filename *smb_fname,
 405                                 uint64_t *bsize_p,
 406                                 uint64_t *dfree_p,
 407                                 uint64_t *dsize_p)
 408 {
 409         struct statvfs statvfs = { 0, };
 410         int ret;
 411
 412         ret = glfs_statvfs(handle->data, smb_fname->base_name, &statvfs);
 413         if (ret < 0) {
 414                 return -1;
 415         }
 416
 417         if (bsize_p != NULL) {
 418                 *bsize_p = (uint64_t)statvfs.f_bsize; /* Block size */
 419         }
 420         if (dfree_p != NULL) {
 421                 *dfree_p = (uint64_t)statvfs.f_bavail; /* Available Block units */
 422         }
 423         if (dsize_p != NULL) {
 424                 *dsize_p = (uint64_t)statvfs.f_blocks; /* Total Block units */
 425         }
 426
 427         return (uint64_t)statvfs.f_bavail;
 428 }
 429
 430 static int vfs_gluster_get_quota(struct vfs_handle_struct *handle,
 431                                 const struct smb_filename *smb_fname,
 432                                 enum SMB_QUOTA_TYPE qtype,
 433                                 unid_t id,
 434                                 SMB_DISK_QUOTA *qt)
 435 {
 436         errno = ENOSYS;
 437         return -1;
 438 }
 439
 440 static int
 441 vfs_gluster_set_quota(struct vfs_handle_struct *handle,
 442                       enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
 443 {
 444         errno = ENOSYS;
 445         return -1;
 446 }
 447
 448 static int vfs_gluster_statvfs(struct vfs_handle_struct *handle,
 449                                 const struct smb_filename *smb_fname,
 450                                 struct vfs_statvfs_struct *vfs_statvfs)
 451 {
 452         struct statvfs statvfs = { 0, };
 453         int ret;
 454
 455         ret = glfs_statvfs(handle->data, smb_fname->base_name, &statvfs);
 456         if (ret < 0) {
 457                 DEBUG(0, ("glfs_statvfs(%s) failed: %s\n",
 458                           smb_fname->base_name, strerror(errno)));
 459                 return -1;
 460         }
 461
 462         ZERO_STRUCTP(vfs_statvfs);
 463
 464         vfs_statvfs->OptimalTransferSize = statvfs.f_frsize;
 465         vfs_statvfs->BlockSize = statvfs.f_bsize;
 466         vfs_statvfs->TotalBlocks = statvfs.f_blocks;
 467         vfs_statvfs->BlocksAvail = statvfs.f_bfree;
 468         vfs_statvfs->UserBlocksAvail = statvfs.f_bavail;
 469         vfs_statvfs->TotalFileNodes = statvfs.f_files;
 470         vfs_statvfs->FreeFileNodes = statvfs.f_ffree;
 471         vfs_statvfs->FsIdentifier = statvfs.f_fsid;
 472         vfs_statvfs->FsCapabilities =
 473             FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
 474
 475         return ret;
 476 }
 477
 478 static uint32_t vfs_gluster_fs_capabilities(struct vfs_handle_struct *handle,
 479                                             enum timestamp_set_resolution *p_ts_res)
 480 {
 481         uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
 482
 483 #ifdef HAVE_GFAPI_VER_6
 484         caps |= FILE_SUPPORTS_SPARSE_FILES;
 485 #endif
 486
 487 #ifdef STAT_HAVE_NSEC
 488         *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
 489 #endif
 490
 491         return caps;
 492 }
 493
 494 static glfs_fd_t *vfs_gluster_fetch_glfd(struct vfs_handle_struct *handle,
 495                                          files_struct *fsp)
 496 {
 497         glfs_fd_t **glfd = (glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
 498         if (glfd == NULL) {
 499                 DBG_INFO("Failed to fetch fsp extension\n");
 500                 return NULL;
 501         }
 502         if (*glfd == NULL) {
 503                 DBG_INFO("Empty glfs_fd_t pointer\n");
 504                 return NULL;
 505         }
 506
 507         return *glfd;
 508 }
 509
 510 static DIR *vfs_gluster_fdopendir(struct vfs_handle_struct *handle,
 511                                   files_struct *fsp, const char *mask,
 512                                   uint32_t attributes)
 513 {
 514         glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
 515         if (glfd == NULL) {
 516                 DBG_ERR("Failed to fetch gluster fd\n");
 517                 return NULL;
 518         }
 519
 520         return (DIR *)glfd;
 521 }
 522
 523 static int vfs_gluster_closedir(struct vfs_handle_struct *handle, DIR *dirp)
 524 {
 525         int ret;
 526
 527         START_PROFILE(syscall_closedir);
 528         ret = glfs_closedir((void *)dirp);
 529         END_PROFILE(syscall_closedir);
 530
 531         return ret;
 532 }
 533
 534 static struct dirent *vfs_gluster_readdir(struct vfs_handle_struct *handle,
 535                                           DIR *dirp, SMB_STRUCT_STAT *sbuf)
 536 {
 537         static char direntbuf[512];
 538         int ret;
 539         struct stat stat;
 540         struct dirent *dirent = 0;
 541
 542         START_PROFILE(syscall_readdir);
 543         if (sbuf != NULL) {
 544                 ret = glfs_readdirplus_r((void *)dirp, &stat, (void *)direntbuf,
 545                                          &dirent);
 546         } else {
 547                 ret = glfs_readdir_r((void *)dirp, (void *)direntbuf, &dirent);
 548         }
 549
 550         if ((ret < 0) || (dirent == NULL)) {
 551                 END_PROFILE(syscall_readdir);
 552                 return NULL;
 553         }
 554
 555         if (sbuf != NULL) {
 556                 SET_STAT_INVALID(*sbuf);
 557                 if (!S_ISLNK(stat.st_mode)) {
 558                         smb_stat_ex_from_stat(sbuf, &stat);
 559                 }
 560         }
 561
 562         END_PROFILE(syscall_readdir);
 563         return dirent;
 564 }
 565
 566 static long vfs_gluster_telldir(struct vfs_handle_struct *handle, DIR *dirp)
 567 {
 568         long ret;
 569
 570         START_PROFILE(syscall_telldir);
 571         ret = glfs_telldir((void *)dirp);
 572         END_PROFILE(syscall_telldir);
 573
 574         return ret;
 575 }
 576
 577 static void vfs_gluster_seekdir(struct vfs_handle_struct *handle, DIR *dirp,
 578                                 long offset)
 579 {
 580         START_PROFILE(syscall_seekdir);
 581         glfs_seekdir((void *)dirp, offset);
 582         END_PROFILE(syscall_seekdir);
 583 }
 584
 585 static void vfs_gluster_rewinddir(struct vfs_handle_struct *handle, DIR *dirp)
 586 {
 587         START_PROFILE(syscall_rewinddir);
 588         glfs_seekdir((void *)dirp, 0);
 589         END_PROFILE(syscall_rewinddir);
 590 }
 591
 592 static int vfs_gluster_mkdirat(struct vfs_handle_struct *handle,
 593                         struct files_struct *dirfsp,
 594                         const struct smb_filename *smb_fname,
 595                         mode_t mode)
 596 {
 597         int ret;
 598
 599         START_PROFILE(syscall_mkdirat);
 600         SMB_ASSERT(dirfsp == dirfsp->conn->cwd_fsp);
 601         ret = glfs_mkdir(handle->data, smb_fname->base_name, mode);
 602         END_PROFILE(syscall_mkdirat);
 603
 604         return ret;
 605 }
 606
 607 static int vfs_gluster_open(struct vfs_handle_struct *handle,
 608                             struct smb_filename *smb_fname, files_struct *fsp,
 609                             int flags, mode_t mode)
 610 {
 611         glfs_fd_t *glfd;
 612         glfs_fd_t **p_tmp;
 613
 614         START_PROFILE(syscall_open);
 615
 616         p_tmp = VFS_ADD_FSP_EXTENSION(handle, fsp, glfs_fd_t *, NULL);
 617         if (p_tmp == NULL) {
 618                 END_PROFILE(syscall_open);
 619                 errno = ENOMEM;
 620                 return -1;
 621         }
 622
 623         if (flags & O_DIRECTORY) {
 624                 glfd = glfs_opendir(handle->data, smb_fname->base_name);
 625         } else if (flags & O_CREAT) {
 626                 glfd = glfs_creat(handle->data, smb_fname->base_name, flags,
 627                                   mode);
 628         } else {
 629                 glfd = glfs_open(handle->data, smb_fname->base_name, flags);
 630         }
 631
 632         if (glfd == NULL) {
 633                 END_PROFILE(syscall_open);
 634                 /* no extension destroy_fn, so no need to save errno */
 635                 VFS_REMOVE_FSP_EXTENSION(handle, fsp);
 636                 return -1;
 637         }
 638
 639         *p_tmp = glfd;
 640
 641         END_PROFILE(syscall_open);
 642         /* An arbitrary value for error reporting, so you know its us. */
 643         return 13371337;
 644 }
 645
 646 static int vfs_gluster_close(struct vfs_handle_struct *handle,
 647                              files_struct *fsp)
 648 {
 649         int ret;
 650         glfs_fd_t *glfd = NULL;
 651
 652         START_PROFILE(syscall_close);
 653
 654         glfd = vfs_gluster_fetch_glfd(handle, fsp);
 655         if (glfd == NULL) {
 656                 END_PROFILE(syscall_close);
 657                 DBG_ERR("Failed to fetch gluster fd\n");
 658                 return -1;
 659         }
 660
 661         VFS_REMOVE_FSP_EXTENSION(handle, fsp);
 662
 663         ret = glfs_close(glfd);
 664         END_PROFILE(syscall_close);
 665
 666         return ret;
 667 }
 668
 669 static ssize_t vfs_gluster_pread(struct vfs_handle_struct *handle,
 670                                  files_struct *fsp, void *data, size_t n,
 671                                  off_t offset)
 672 {
 673         ssize_t ret;
 674         glfs_fd_t *glfd = NULL;
 675
 676         START_PROFILE_BYTES(syscall_pread, n);
 677
 678         glfd = vfs_gluster_fetch_glfd(handle, fsp);
 679         if (glfd == NULL) {
 680                 END_PROFILE_BYTES(syscall_pread);
 681                 DBG_ERR("Failed to fetch gluster fd\n");
 682                 return -1;
 683         }
 684
 685 #ifdef HAVE_GFAPI_VER_7_6
 686         ret = glfs_pread(glfd, data, n, offset, 0, NULL);
 687 #else
 688         ret = glfs_pread(glfd, data, n, offset, 0);
 689 #endif
 690         END_PROFILE_BYTES(syscall_pread);
 691
 692         return ret;
 693 }
 694
 695 struct vfs_gluster_pread_state {
 696         ssize_t ret;
 697         glfs_fd_t *fd;
 698         void *buf;
 699         size_t count;
 700         off_t offset;
 701
 702         struct vfs_aio_state vfs_aio_state;
 703         SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
 704 };
 705
 706 static void vfs_gluster_pread_do(void *private_data);
 707 static void vfs_gluster_pread_done(struct tevent_req *subreq);
 708 static int vfs_gluster_pread_state_destructor(struct vfs_gluster_pread_state *state);
 709
 710 static struct tevent_req *vfs_gluster_pread_send(struct vfs_handle_struct
 711                                                   *handle, TALLOC_CTX *mem_ctx,
 712                                                   struct tevent_context *ev,
 713                                                   files_struct *fsp,
 714                                                   void *data, size_t n,
 715                                                   off_t offset)
 716 {
 717         struct vfs_gluster_pread_state *state;
 718         struct tevent_req *req, *subreq;
 719
 720         glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
 721         if (glfd == NULL) {
 722                 DBG_ERR("Failed to fetch gluster fd\n");
 723                 return NULL;
 724         }
 725
 726         req = tevent_req_create(mem_ctx, &state, struct vfs_gluster_pread_state);
 727         if (req == NULL) {
 728                 return NULL;
 729         }
 730
 731         state->ret = -1;
 732         state->fd = glfd;
 733         state->buf = data;
 734         state->count = n;
 735         state->offset = offset;
 736
 737         SMBPROFILE_BYTES_ASYNC_START(syscall_asys_pread, profile_p,
 738                                      state->profile_bytes, n);
 739         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
 740
 741         subreq = pthreadpool_tevent_job_send(
 742                 state, ev, handle->conn->sconn->pool,
 743                 vfs_gluster_pread_do, state);
 744         if (tevent_req_nomem(subreq, req)) {
 745                 return tevent_req_post(req, ev);
 746         }
 747         tevent_req_set_callback(subreq, vfs_gluster_pread_done, req);
 748
 749         talloc_set_destructor(state, vfs_gluster_pread_state_destructor);
 750
 751         return req;
 752 }
 753
 754 static void vfs_gluster_pread_do(void *private_data)
 755 {
 756         struct vfs_gluster_pread_state *state = talloc_get_type_abort(
 757                 private_data, struct vfs_gluster_pread_state);
 758         struct timespec start_time;
 759         struct timespec end_time;
 760
 761         SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
 762
 763         PROFILE_TIMESTAMP(&start_time);
 764
 765         do {
 766 #ifdef HAVE_GFAPI_VER_7_6
 767                 state->ret = glfs_pread(state->fd, state->buf, state->count,
 768                                         state->offset, 0, NULL);
 769 #else
 770                 state->ret = glfs_pread(state->fd, state->buf, state->count,
 771                                         state->offset, 0);
 772 #endif
 773         } while ((state->ret == -1) && (errno == EINTR));
 774
 775         if (state->ret == -1) {
 776                 state->vfs_aio_state.error = errno;
 777         }
 778
 779         PROFILE_TIMESTAMP(&end_time);
 780
 781         state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
 782
 783         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
 784 }
 785
 786 static int vfs_gluster_pread_state_destructor(struct vfs_gluster_pread_state *state)
 787 {
 788         return -1;
 789 }
 790
 791 static void vfs_gluster_pread_done(struct tevent_req *subreq)
 792 {
 793         struct tevent_req *req = tevent_req_callback_data(
 794                 subreq, struct tevent_req);
 795         struct vfs_gluster_pread_state *state = tevent_req_data(
 796                 req, struct vfs_gluster_pread_state);
 797         int ret;
 798
 799         ret = pthreadpool_tevent_job_recv(subreq);
 800         TALLOC_FREE(subreq);
 801         SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
 802         talloc_set_destructor(state, NULL);
 803         if (ret != 0) {
 804                 if (ret != EAGAIN) {
 805                         tevent_req_error(req, ret);
 806                         return;
 807                 }
 808                 /*
 809                  * If we get EAGAIN from pthreadpool_tevent_job_recv() this
 810                  * means the lower level pthreadpool failed to create a new
 811                  * thread. Fallback to sync processing in that case to allow
 812                  * some progress for the client.
 813                  */
 814                 vfs_gluster_pread_do(state);
 815         }
 816
 817         tevent_req_done(req);
 818 }
 819
 820 static ssize_t vfs_gluster_pread_recv(struct tevent_req *req,
 821                                       struct vfs_aio_state *vfs_aio_state)
 822 {
 823         struct vfs_gluster_pread_state *state = tevent_req_data(
 824                 req, struct vfs_gluster_pread_state);
 825
 826         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
 827                 return -1;
 828         }
 829
 830         *vfs_aio_state = state->vfs_aio_state;
 831         return state->ret;
 832 }
 833
 834 struct vfs_gluster_pwrite_state {
 835         ssize_t ret;
 836         glfs_fd_t *fd;
 837         const void *buf;
 838         size_t count;
 839         off_t offset;
 840
 841         struct vfs_aio_state vfs_aio_state;
 842         SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
 843 };
 844
 845 static void vfs_gluster_pwrite_do(void *private_data);
 846 static void vfs_gluster_pwrite_done(struct tevent_req *subreq);
 847 static int vfs_gluster_pwrite_state_destructor(struct vfs_gluster_pwrite_state *state);
 848
 849 static struct tevent_req *vfs_gluster_pwrite_send(struct vfs_handle_struct
 850                                                   *handle, TALLOC_CTX *mem_ctx,
 851                                                   struct tevent_context *ev,
 852                                                   files_struct *fsp,
 853                                                   const void *data, size_t n,
 854                                                   off_t offset)
 855 {
 856         struct tevent_req *req, *subreq;
 857         struct vfs_gluster_pwrite_state *state;
 858
 859         glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
 860         if (glfd == NULL) {
 861                 DBG_ERR("Failed to fetch gluster fd\n");
 862                 return NULL;
 863         }
 864
 865         req = tevent_req_create(mem_ctx, &state, struct vfs_gluster_pwrite_state);
 866         if (req == NULL) {
 867                 return NULL;
 868         }
 869
 870         state->ret = -1;
 871         state->fd = glfd;
 872         state->buf = data;
 873         state->count = n;
 874         state->offset = offset;
 875
 876         SMBPROFILE_BYTES_ASYNC_START(syscall_asys_pwrite, profile_p,
 877                                      state->profile_bytes, n);
 878         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
 879
 880         subreq = pthreadpool_tevent_job_send(
 881                 state, ev, handle->conn->sconn->pool,
 882                 vfs_gluster_pwrite_do, state);
 883         if (tevent_req_nomem(subreq, req)) {
 884                 return tevent_req_post(req, ev);
 885         }
 886         tevent_req_set_callback(subreq, vfs_gluster_pwrite_done, req);
 887
 888         talloc_set_destructor(state, vfs_gluster_pwrite_state_destructor);
 889
 890         return req;
 891 }
 892
 893 static void vfs_gluster_pwrite_do(void *private_data)
 894 {
 895         struct vfs_gluster_pwrite_state *state = talloc_get_type_abort(
 896                 private_data, struct vfs_gluster_pwrite_state);
 897         struct timespec start_time;
 898         struct timespec end_time;
 899
 900         SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
 901
 902         PROFILE_TIMESTAMP(&start_time);
 903
 904         do {
 905 #ifdef HAVE_GFAPI_VER_7_6
 906                 state->ret = glfs_pwrite(state->fd, state->buf, state->count,
 907                                          state->offset, 0, NULL, NULL);
 908 #else
 909                 state->ret = glfs_pwrite(state->fd, state->buf, state->count,
 910                                          state->offset, 0);
 911 #endif
 912         } while ((state->ret == -1) && (errno == EINTR));
 913
 914         if (state->ret == -1) {
 915                 state->vfs_aio_state.error = errno;
 916         }
 917
 918         PROFILE_TIMESTAMP(&end_time);
 919
 920         state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
 921
 922         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
 923 }
 924
 925 static int vfs_gluster_pwrite_state_destructor(struct vfs_gluster_pwrite_state *state)
 926 {
 927         return -1;
 928 }
 929
 930 static void vfs_gluster_pwrite_done(struct tevent_req *subreq)
 931 {
 932         struct tevent_req *req = tevent_req_callback_data(
 933                 subreq, struct tevent_req);
 934         struct vfs_gluster_pwrite_state *state = tevent_req_data(
 935                 req, struct vfs_gluster_pwrite_state);
 936         int ret;
 937
 938         ret = pthreadpool_tevent_job_recv(subreq);
 939         TALLOC_FREE(subreq);
 940         SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
 941         talloc_set_destructor(state, NULL);
 942         if (ret != 0) {
 943                 if (ret != EAGAIN) {
 944                         tevent_req_error(req, ret);
 945                         return;
 946                 }
 947                 /*
 948                  * If we get EAGAIN from pthreadpool_tevent_job_recv() this
 949                  * means the lower level pthreadpool failed to create a new
 950                  * thread. Fallback to sync processing in that case to allow
 951                  * some progress for the client.
 952                  */
 953                 vfs_gluster_pwrite_do(state);
 954         }
 955
 956         tevent_req_done(req);
 957 }
 958
 959 static ssize_t vfs_gluster_pwrite_recv(struct tevent_req *req,
 960                                        struct vfs_aio_state *vfs_aio_state)
 961 {
 962         struct vfs_gluster_pwrite_state *state = tevent_req_data(
 963                 req, struct vfs_gluster_pwrite_state);
 964
 965         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
 966                 return -1;
 967         }
 968
 969         *vfs_aio_state = state->vfs_aio_state;
 970
 971         return state->ret;
 972 }
 973
 974 static ssize_t vfs_gluster_pwrite(struct vfs_handle_struct *handle,
 975                                   files_struct *fsp, const void *data,
 976                                   size_t n, off_t offset)
 977 {
 978         ssize_t ret;
 979         glfs_fd_t *glfd = NULL;
 980
 981         START_PROFILE_BYTES(syscall_pwrite, n);
 982
 983         glfd = vfs_gluster_fetch_glfd(handle, fsp);
 984         if (glfd == NULL) {
 985                 END_PROFILE_BYTES(syscall_pwrite);
 986                 DBG_ERR("Failed to fetch gluster fd\n");
 987                 return -1;
 988         }
 989
 990 #ifdef HAVE_GFAPI_VER_7_6
 991         ret = glfs_pwrite(glfd, data, n, offset, 0, NULL, NULL);
 992 #else
 993         ret = glfs_pwrite(glfd, data, n, offset, 0);
 994 #endif
 995         END_PROFILE_BYTES(syscall_pwrite);
 996
 997         return ret;
 998 }
 999
1000 static off_t vfs_gluster_lseek(struct vfs_handle_struct *handle,
1001                                files_struct *fsp, off_t offset, int whence)
1002 {
1003         off_t ret = 0;
1004         glfs_fd_t *glfd = NULL;
1005
1006         START_PROFILE(syscall_lseek);
1007
1008         glfd = vfs_gluster_fetch_glfd(handle, fsp);
1009         if (glfd == NULL) {
1010                 END_PROFILE(syscall_lseek);
1011                 DBG_ERR("Failed to fetch gluster fd\n");
1012                 return -1;
1013         }
1014
1015         ret = glfs_lseek(glfd, offset, whence);
1016         END_PROFILE(syscall_lseek);
1017
1018         return ret;
1019 }
1020
1021 static ssize_t vfs_gluster_sendfile(struct vfs_handle_struct *handle, int tofd,
1022                                     files_struct *fromfsp,
1023                                     const DATA_BLOB *hdr,
1024                                     off_t offset, size_t n)
1025 {
1026         errno = ENOTSUP;
1027         return -1;
1028 }
1029
1030 static ssize_t vfs_gluster_recvfile(struct vfs_handle_struct *handle,
1031                                     int fromfd, files_struct *tofsp,
1032                                     off_t offset, size_t n)
1033 {
1034         errno = ENOTSUP;
1035         return -1;
1036 }
1037
1038 static int vfs_gluster_renameat(struct vfs_handle_struct *handle,
1039                         files_struct *srcfsp,
1040                         const struct smb_filename *smb_fname_src,
1041                         files_struct *dstfsp,
1042                         const struct smb_filename *smb_fname_dst)
1043 {
1044         int ret;
1045
1046         START_PROFILE(syscall_renameat);
1047         ret = glfs_rename(handle->data, smb_fname_src->base_name,
1048                           smb_fname_dst->base_name);
1049         END_PROFILE(syscall_renameat);
1050
1051         return ret;
1052 }
1053
1054 struct vfs_gluster_fsync_state {
1055         ssize_t ret;
1056         glfs_fd_t *fd;
1057
1058         struct vfs_aio_state vfs_aio_state;
1059         SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
1060 };
1061
1062 static void vfs_gluster_fsync_do(void *private_data);
1063 static void vfs_gluster_fsync_done(struct tevent_req *subreq);
1064 static int vfs_gluster_fsync_state_destructor(struct vfs_gluster_fsync_state *state);
1065
1066 static struct tevent_req *vfs_gluster_fsync_send(struct vfs_handle_struct
1067                                                  *handle, TALLOC_CTX *mem_ctx,
1068                                                  struct tevent_context *ev,
1069                                                  files_struct *fsp)
1070 {
1071         struct tevent_req *req, *subreq;
1072         struct vfs_gluster_fsync_state *state;
1073
1074         glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
1075         if (glfd == NULL) {
1076                 DBG_ERR("Failed to fetch gluster fd\n");
1077                 return NULL;
1078         }
1079
1080         req = tevent_req_create(mem_ctx, &state, struct vfs_gluster_fsync_state);
1081         if (req == NULL) {
1082                 return NULL;
1083         }
1084
1085         state->ret = -1;
1086         state->fd = glfd;
1087
1088         SMBPROFILE_BYTES_ASYNC_START(syscall_asys_fsync, profile_p,
1089                                      state->profile_bytes, 0);
1090         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
1091
1092         subreq = pthreadpool_tevent_job_send(
1093                 state, ev, handle->conn->sconn->pool, vfs_gluster_fsync_do, state);
1094         if (tevent_req_nomem(subreq, req)) {
1095                 return tevent_req_post(req, ev);
1096         }
1097         tevent_req_set_callback(subreq, vfs_gluster_fsync_done, req);
1098
1099         talloc_set_destructor(state, vfs_gluster_fsync_state_destructor);
1100
1101         return req;
1102 }
1103
1104 static void vfs_gluster_fsync_do(void *private_data)
1105 {
1106         struct vfs_gluster_fsync_state *state = talloc_get_type_abort(
1107                 private_data, struct vfs_gluster_fsync_state);
1108         struct timespec start_time;
1109         struct timespec end_time;
1110
1111         SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
1112
1113         PROFILE_TIMESTAMP(&start_time);
1114
1115         do {
1116 #ifdef HAVE_GFAPI_VER_7_6
1117                 state->ret = glfs_fsync(state->fd, NULL, NULL);
1118 #else
1119                 state->ret = glfs_fsync(state->fd);
1120 #endif
1121         } while ((state->ret == -1) && (errno == EINTR));
1122
1123         if (state->ret == -1) {
1124                 state->vfs_aio_state.error = errno;
1125         }
1126
1127         PROFILE_TIMESTAMP(&end_time);
1128
1129         state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
1130
1131         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
1132 }
1133
1134 static int vfs_gluster_fsync_state_destructor(struct vfs_gluster_fsync_state *state)
1135 {
1136         return -1;
1137 }
1138
1139 static void vfs_gluster_fsync_done(struct tevent_req *subreq)
1140 {
1141         struct tevent_req *req = tevent_req_callback_data(
1142                 subreq, struct tevent_req);
1143         struct vfs_gluster_fsync_state *state = tevent_req_data(
1144                 req, struct vfs_gluster_fsync_state);
1145         int ret;
1146
1147         ret = pthreadpool_tevent_job_recv(subreq);
1148         TALLOC_FREE(subreq);
1149         SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
1150         talloc_set_destructor(state, NULL);
1151         if (ret != 0) {
1152                 if (ret != EAGAIN) {
1153                         tevent_req_error(req, ret);
1154                         return;
1155                 }
1156                 /*
1157                  * If we get EAGAIN from pthreadpool_tevent_job_recv() this
1158                  * means the lower level pthreadpool failed to create a new
1159                  * thread. Fallback to sync processing in that case to allow
1160                  * some progress for the client.
1161                  */
1162                 vfs_gluster_fsync_do(state);
1163         }
1164
1165         tevent_req_done(req);
1166 }
1167
1168 static int vfs_gluster_fsync_recv(struct tevent_req *req,
1169                                   struct vfs_aio_state *vfs_aio_state)
1170 {
1171         struct vfs_gluster_fsync_state *state = tevent_req_data(
1172                 req, struct vfs_gluster_fsync_state);
1173
1174         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1175                 return -1;
1176         }
1177
1178         *vfs_aio_state = state->vfs_aio_state;
1179         return state->ret;
1180 }
1181
1182 static int vfs_gluster_stat(struct vfs_handle_struct *handle,
1183                             struct smb_filename *smb_fname)
1184 {
1185         struct stat st;
1186         int ret;
1187
1188         START_PROFILE(syscall_stat);
1189         ret = glfs_stat(handle->data, smb_fname->base_name, &st);
1190         if (ret == 0) {
1191                 smb_stat_ex_from_stat(&smb_fname->st, &st);
1192         }
1193         if (ret < 0 && errno != ENOENT) {
1194                 DEBUG(0, ("glfs_stat(%s) failed: %s\n",
1195                           smb_fname->base_name, strerror(errno)));
1196         }
1197         END_PROFILE(syscall_stat);
1198
1199         return ret;
1200 }
1201
1202 static int vfs_gluster_fstat(struct vfs_handle_struct *handle,
1203                              files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1204 {
1205         struct stat st;
1206         int ret;
1207         glfs_fd_t *glfd = NULL;
1208
1209         START_PROFILE(syscall_fstat);
1210
1211         glfd = vfs_gluster_fetch_glfd(handle, fsp);
1212         if (glfd == NULL) {
1213                 END_PROFILE(syscall_fstat);
1214                 DBG_ERR("Failed to fetch gluster fd\n");
1215                 return -1;
1216         }
1217
1218         ret = glfs_fstat(glfd, &st);
1219         if (ret == 0) {
1220                 smb_stat_ex_from_stat(sbuf, &st);
1221         }
1222         if (ret < 0) {
1223                 DEBUG(0, ("glfs_fstat(%d) failed: %s\n",
1224                           fsp->fh->fd, strerror(errno)));
1225         }
1226         END_PROFILE(syscall_fstat);
1227
1228         return ret;
1229 }
1230
1231 static int vfs_gluster_lstat(struct vfs_handle_struct *handle,
1232                              struct smb_filename *smb_fname)
1233 {
1234         struct stat st;
1235         int ret;
1236
1237         START_PROFILE(syscall_lstat);
1238         ret = glfs_lstat(handle->data, smb_fname->base_name, &st);
1239         if (ret == 0) {
1240                 smb_stat_ex_from_stat(&smb_fname->st, &st);
1241         }
1242         if (ret < 0 && errno != ENOENT) {
1243                 DEBUG(0, ("glfs_lstat(%s) failed: %s\n",
1244                           smb_fname->base_name, strerror(errno)));
1245         }
1246         END_PROFILE(syscall_lstat);
1247
1248         return ret;
1249 }
1250
1251 static uint64_t vfs_gluster_get_alloc_size(struct vfs_handle_struct *handle,
1252                                            files_struct *fsp,
1253                                            const SMB_STRUCT_STAT *sbuf)
1254 {
1255         uint64_t ret;
1256
1257         START_PROFILE(syscall_get_alloc_size);
1258         ret = sbuf->st_ex_blocks * 512;
1259         END_PROFILE(syscall_get_alloc_size);
1260
1261         return ret;
1262 }
1263
1264 static int vfs_gluster_unlinkat(struct vfs_handle_struct *handle,
1265                         struct files_struct *dirfsp,
1266                         const struct smb_filename *smb_fname,
1267                         int flags)
1268 {
1269         int ret;
1270
1271         START_PROFILE(syscall_unlinkat);
1272         SMB_ASSERT(dirfsp == dirfsp->conn->cwd_fsp);
1273         if (flags & AT_REMOVEDIR) {
1274                 ret = glfs_rmdir(handle->data, smb_fname->base_name);
1275         } else {
1276                 ret = glfs_unlink(handle->data, smb_fname->base_name);
1277         }
1278         END_PROFILE(syscall_unlinkat);
1279
1280         return ret;
1281 }
1282
1283 static int vfs_gluster_chmod(struct vfs_handle_struct *handle,
1284                                 const struct smb_filename *smb_fname,
1285                                 mode_t mode)
1286 {
1287         int ret;
1288
1289         START_PROFILE(syscall_chmod);
1290         ret = glfs_chmod(handle->data, smb_fname->base_name, mode);
1291         END_PROFILE(syscall_chmod);
1292
1293         return ret;
1294 }
1295
1296 static int vfs_gluster_fchmod(struct vfs_handle_struct *handle,
1297                               files_struct *fsp, mode_t mode)
1298 {
1299         int ret;
1300         glfs_fd_t *glfd = NULL;
1301
1302         START_PROFILE(syscall_fchmod);
1303
1304         glfd = vfs_gluster_fetch_glfd(handle, fsp);
1305         if (glfd == NULL) {
1306                 END_PROFILE(syscall_fchmod);
1307                 DBG_ERR("Failed to fetch gluster fd\n");
1308                 return -1;
1309         }
1310
1311         ret = glfs_fchmod(glfd, mode);
1312         END_PROFILE(syscall_fchmod);
1313
1314         return ret;
1315 }
1316
1317 static int vfs_gluster_fchown(struct vfs_handle_struct *handle,
1318                               files_struct *fsp, uid_t uid, gid_t gid)
1319 {
1320         int ret;
1321         glfs_fd_t *glfd = NULL;
1322
1323         START_PROFILE(syscall_fchown);
1324
1325         glfd = vfs_gluster_fetch_glfd(handle, fsp);
1326         if (glfd == NULL) {
1327                 END_PROFILE(syscall_fchown);
1328                 DBG_ERR("Failed to fetch gluster fd\n");
1329                 return -1;
1330         }
1331
1332         ret = glfs_fchown(glfd, uid, gid);
1333         END_PROFILE(syscall_fchown);
1334
1335         return ret;
1336 }
1337
1338 static int vfs_gluster_lchown(struct vfs_handle_struct *handle,
1339                         const struct smb_filename *smb_fname,
1340                         uid_t uid,
1341                         gid_t gid)
1342 {
1343         int ret;
1344
1345         START_PROFILE(syscall_lchown);
1346         ret = glfs_lchown(handle->data, smb_fname->base_name, uid, gid);
1347         END_PROFILE(syscall_lchown);
1348
1349         return ret;
1350 }
1351
1352 static int vfs_gluster_chdir(struct vfs_handle_struct *handle,
1353                         const struct smb_filename *smb_fname)
1354 {
1355         int ret;
1356
1357         START_PROFILE(syscall_chdir);
1358         ret = glfs_chdir(handle->data, smb_fname->base_name);
1359         END_PROFILE(syscall_chdir);
1360
1361         return ret;
1362 }
1363
1364 static struct smb_filename *vfs_gluster_getwd(struct vfs_handle_struct *handle,
1365                                 TALLOC_CTX *ctx)
1366 {
1367         char *cwd;
1368         char *ret;
1369         struct smb_filename *smb_fname = NULL;
1370
1371         START_PROFILE(syscall_getwd);
1372
1373         cwd = SMB_CALLOC_ARRAY(char, PATH_MAX);
1374         if (cwd == NULL) {
1375                 END_PROFILE(syscall_getwd);
1376                 return NULL;
1377         }
1378
1379         ret = glfs_getcwd(handle->data, cwd, PATH_MAX - 1);
1380         END_PROFILE(syscall_getwd);
1381
1382         if (ret == NULL) {
1383                 SAFE_FREE(cwd);
1384                 return NULL;
1385         }
1386         smb_fname = synthetic_smb_fname(ctx,
1387                                         ret,
1388                                         NULL,
1389                                         NULL,
1390                                         0,
1391                                         0);
1392         SAFE_FREE(cwd);
1393         return smb_fname;
1394 }
1395
1396 static int vfs_gluster_ntimes(struct vfs_handle_struct *handle,
1397                               const struct smb_filename *smb_fname,
1398                               struct smb_file_time *ft)
1399 {
1400         int ret = -1;
1401         struct timespec times[2];
1402
1403         START_PROFILE(syscall_ntimes);
1404
1405         if (is_omit_timespec(&ft->atime)) {
1406                 times[0].tv_sec = smb_fname->st.st_ex_atime.tv_sec;
1407                 times[0].tv_nsec = smb_fname->st.st_ex_atime.tv_nsec;
1408         } else {
1409                 times[0].tv_sec = ft->atime.tv_sec;
1410                 times[0].tv_nsec = ft->atime.tv_nsec;
1411         }
1412
1413         if (is_omit_timespec(&ft->mtime)) {
1414                 times[1].tv_sec = smb_fname->st.st_ex_mtime.tv_sec;
1415                 times[1].tv_nsec = smb_fname->st.st_ex_mtime.tv_nsec;
1416         } else {
1417                 times[1].tv_sec = ft->mtime.tv_sec;
1418                 times[1].tv_nsec = ft->mtime.tv_nsec;
1419         }
1420
1421         if ((timespec_compare(&times[0],
1422                               &smb_fname->st.st_ex_atime) == 0) &&
1423             (timespec_compare(&times[1],
1424                               &smb_fname->st.st_ex_mtime) == 0)) {
1425                 END_PROFILE(syscall_ntimes);
1426                 return 0;
1427         }
1428
1429         ret = glfs_utimens(handle->data, smb_fname->base_name, times);
1430         END_PROFILE(syscall_ntimes);
1431
1432         return ret;
1433 }
1434
1435 static int vfs_gluster_ftruncate(struct vfs_handle_struct *handle,
1436                                  files_struct *fsp, off_t offset)
1437 {
1438         int ret;
1439         glfs_fd_t *glfd = NULL;
1440
1441         START_PROFILE(syscall_ftruncate);
1442
1443         glfd = vfs_gluster_fetch_glfd(handle, fsp);
1444         if (glfd == NULL) {
1445                 END_PROFILE(syscall_ftruncate);
1446                 DBG_ERR("Failed to fetch gluster fd\n");
1447                 return -1;
1448         }
1449
1450 #ifdef HAVE_GFAPI_VER_7_6
1451         ret = glfs_ftruncate(glfd, offset, NULL, NULL);
1452 #else
1453         ret = glfs_ftruncate(glfd, offset);
1454 #endif
1455         END_PROFILE(syscall_ftruncate);
1456
1457         return ret;
1458 }
1459
1460 static int vfs_gluster_fallocate(struct vfs_handle_struct *handle,
1461                                  struct files_struct *fsp,
1462                                  uint32_t mode,
1463                                  off_t offset, off_t len)
1464 {
1465         int ret;
1466 #ifdef HAVE_GFAPI_VER_6
1467         glfs_fd_t *glfd = NULL;
1468         int keep_size, punch_hole;
1469
1470         START_PROFILE(syscall_fallocate);
1471
1472         glfd = vfs_gluster_fetch_glfd(handle, fsp);
1473         if (glfd == NULL) {
1474                 END_PROFILE(syscall_fallocate);
1475                 DBG_ERR("Failed to fetch gluster fd\n");
1476                 return -1;
1477         }
1478
1479         keep_size = mode & VFS_FALLOCATE_FL_KEEP_SIZE;
1480         punch_hole = mode & VFS_FALLOCATE_FL_PUNCH_HOLE;
1481
1482         mode &= ~(VFS_FALLOCATE_FL_KEEP_SIZE|VFS_FALLOCATE_FL_PUNCH_HOLE);
1483         if (mode != 0) {
1484                 END_PROFILE(syscall_fallocate);
1485                 errno = ENOTSUP;
1486                 return -1;
1487         }
1488
1489         if (punch_hole) {
1490                 ret = glfs_discard(glfd, offset, len);
1491                 if (ret != 0) {
1492                         DBG_DEBUG("glfs_discard failed: %s\n",
1493                                   strerror(errno));
1494                 }
1495         }
1496
1497         ret = glfs_fallocate(glfd, keep_size, offset, len);
1498         END_PROFILE(syscall_fallocate);
1499 #else
1500         errno = ENOTSUP;
1501         ret = -1;
1502 #endif
1503         return ret;
1504 }
1505
1506 static struct smb_filename *vfs_gluster_realpath(struct vfs_handle_struct *handle,
1507                                 TALLOC_CTX *ctx,
1508                                 const struct smb_filename *smb_fname)
1509 {
1510         char *result = NULL;
1511         struct smb_filename *result_fname = NULL;
1512         char *resolved_path = NULL;
1513
1514         START_PROFILE(syscall_realpath);
1515
1516         resolved_path = SMB_MALLOC_ARRAY(char, PATH_MAX+1);
1517         if (resolved_path == NULL) {
1518                 END_PROFILE(syscall_realpath);
1519                 errno = ENOMEM;
1520                 return NULL;
1521         }
1522
1523         result = glfs_realpath(handle->data,
1524                         smb_fname->base_name,
1525                         resolved_path);
1526         if (result != NULL) {
1527                 result_fname = synthetic_smb_fname(ctx,
1528                                                    result,
1529                                                    NULL,
1530                                                    NULL,
1531                                                    0,
1532                                                    0);
1533         }
1534
1535         SAFE_FREE(resolved_path);
1536         END_PROFILE(syscall_realpath);
1537
1538         return result_fname;
1539 }
1540
1541 static bool vfs_gluster_lock(struct vfs_handle_struct *handle,
1542                              files_struct *fsp, int op, off_t offset,
1543                              off_t count, int type)
1544 {
1545         struct flock flock = { 0, };
1546         int ret;
1547         glfs_fd_t *glfd = NULL;
1548         bool ok = false;
1549
1550         START_PROFILE(syscall_fcntl_lock);
1551
1552         glfd = vfs_gluster_fetch_glfd(handle, fsp);
1553         if (glfd == NULL) {
1554                 DBG_ERR("Failed to fetch gluster fd\n");
1555                 ok = false;
1556                 goto out;
1557         }
1558
1559         flock.l_type = type;
1560         flock.l_whence = SEEK_SET;
1561         flock.l_start = offset;
1562         flock.l_len = count;
1563         flock.l_pid = 0;
1564
1565         ret = glfs_posix_lock(glfd, op, &flock);
1566
1567         if (op == F_GETLK) {
1568                 /* lock query, true if someone else has locked */
1569                 if ((ret != -1) &&
1570                     (flock.l_type != F_UNLCK) &&
1571                     (flock.l_pid != 0) && (flock.l_pid != getpid())) {
1572                         ok = true;
1573                         goto out;
1574                 }
1575                 /* not me */
1576                 ok = false;
1577                 goto out;
1578         }
1579
1580         if (ret == -1) {
1581                 ok = false;
1582                 goto out;
1583         }
1584
1585         ok = true;
1586 out:
1587         END_PROFILE(syscall_fcntl_lock);
1588
1589         return ok;
1590 }
1591
1592 static int vfs_gluster_kernel_flock(struct vfs_handle_struct *handle,
1593                                     files_struct *fsp, uint32_t share_access,
1594                                     uint32_t access_mask)
1595 {
1596         errno = ENOSYS;
1597         return -1;
1598 }
1599
1600 static int vfs_gluster_fcntl(vfs_handle_struct *handle,
1601                              files_struct *fsp, int cmd, va_list cmd_arg)
1602 {
1603         /*
1604          * SMB_VFS_FCNTL() is currently only called by vfs_set_blocking() to
1605          * clear O_NONBLOCK, etc for LOCK_MAND and FIFOs. Ignore it.
1606          */
1607         if (cmd == F_GETFL) {
1608                 return 0;
1609         } else if (cmd == F_SETFL) {
1610                 va_list dup_cmd_arg;
1611                 int opt;
1612
1613                 va_copy(dup_cmd_arg, cmd_arg);
1614                 opt = va_arg(dup_cmd_arg, int);
1615                 va_end(dup_cmd_arg);
1616                 if (opt == 0) {
1617                         return 0;
1618                 }
1619                 DBG_ERR("unexpected fcntl SETFL(%d)\n", opt);
1620                 goto err_out;
1621         }
1622         DBG_ERR("unexpected fcntl: %d\n", cmd);
1623 err_out:
1624         errno = EINVAL;
1625         return -1;
1626 }
1627
1628 static int vfs_gluster_linux_setlease(struct vfs_handle_struct *handle,
1629                                       files_struct *fsp, int leasetype)
1630 {
1631         errno = ENOSYS;
1632         return -1;
1633 }
1634
1635 static bool vfs_gluster_getlock(struct vfs_handle_struct *handle,
1636                                 files_struct *fsp, off_t *poffset,
1637                                 off_t *pcount, int *ptype, pid_t *ppid)
1638 {
1639         struct flock flock = { 0, };
1640         int ret;
1641         glfs_fd_t *glfd = NULL;
1642
1643         START_PROFILE(syscall_fcntl_getlock);
1644
1645         glfd = vfs_gluster_fetch_glfd(handle, fsp);
1646         if (glfd == NULL) {
1647                 END_PROFILE(syscall_fcntl_getlock);
1648                 DBG_ERR("Failed to fetch gluster fd\n");
1649                 return false;
1650         }
1651
1652         flock.l_type = *ptype;
1653         flock.l_whence = SEEK_SET;
1654         flock.l_start = *poffset;
1655         flock.l_len = *pcount;
1656         flock.l_pid = 0;
1657
1658         ret = glfs_posix_lock(glfd, F_GETLK, &flock);
1659
1660         if (ret == -1) {
1661                 END_PROFILE(syscall_fcntl_getlock);
1662                 return false;
1663         }
1664
1665         *ptype = flock.l_type;
1666         *poffset = flock.l_start;
1667         *pcount = flock.l_len;
1668         *ppid = flock.l_pid;
1669         END_PROFILE(syscall_fcntl_getlock);
1670
1671         return true;
1672 }
1673
1674 static int vfs_gluster_symlinkat(struct vfs_handle_struct *handle,
1675                                 const struct smb_filename *link_target,
1676                                 struct files_struct *dirfsp,
1677                                 const struct smb_filename *new_smb_fname)
1678 {
1679         int ret;
1680
1681         START_PROFILE(syscall_symlinkat);
1682         SMB_ASSERT(dirfsp == dirfsp->conn->cwd_fsp);
1683         ret = glfs_symlink(handle->data,
1684                         link_target->base_name,
1685                         new_smb_fname->base_name);
1686         END_PROFILE(syscall_symlinkat);
1687
1688         return ret;
1689 }
1690
1691 static int vfs_gluster_readlinkat(struct vfs_handle_struct *handle,
1692                                 files_struct *dirfsp,
1693                                 const struct smb_filename *smb_fname,
1694                                 char *buf,
1695                                 size_t bufsiz)
1696 {
1697         int ret;
1698
1699         START_PROFILE(syscall_readlinkat);
1700         SMB_ASSERT(dirfsp == dirfsp->conn->cwd_fsp);
1701         ret = glfs_readlink(handle->data, smb_fname->base_name, buf, bufsiz);
1702         END_PROFILE(syscall_readlinkat);
1703
1704         return ret;
1705 }
1706
1707 static int vfs_gluster_linkat(struct vfs_handle_struct *handle,
1708                                 files_struct *srcfsp,
1709                                 const struct smb_filename *old_smb_fname,
1710                                 files_struct *dstfsp,
1711                                 const struct smb_filename *new_smb_fname,
1712                                 int flags)
1713 {
1714         int ret;
1715
1716         START_PROFILE(syscall_linkat);
1717
1718         SMB_ASSERT(srcfsp == srcfsp->conn->cwd_fsp);
1719         SMB_ASSERT(dstfsp == dstfsp->conn->cwd_fsp);
1720
1721         ret = glfs_link(handle->data,
1722                         old_smb_fname->base_name,
1723                         new_smb_fname->base_name);
1724         END_PROFILE(syscall_linkat);
1725
1726         return ret;
1727 }
1728
1729 static int vfs_gluster_mknodat(struct vfs_handle_struct *handle,
1730                                 files_struct *dirfsp,
1731                                 const struct smb_filename *smb_fname,
1732                                 mode_t mode,
1733                                 SMB_DEV_T dev)
1734 {
1735         int ret;
1736
1737         START_PROFILE(syscall_mknodat);
1738         SMB_ASSERT(dirfsp == dirfsp->conn->cwd_fsp);
1739         ret = glfs_mknod(handle->data, smb_fname->base_name, mode, dev);
1740         END_PROFILE(syscall_mknodat);
1741
1742         return ret;
1743 }
1744
1745 static int vfs_gluster_chflags(struct vfs_handle_struct *handle,
1746                                 const struct smb_filename *smb_fname,
1747                                 unsigned int flags)
1748 {
1749         errno = ENOSYS;
1750         return -1;
1751 }
1752
1753 static int vfs_gluster_get_real_filename(struct vfs_handle_struct *handle,
1754                                          const struct smb_filename *path,
1755                                          const char *name,
1756                                          TALLOC_CTX *mem_ctx,
1757                                          char **found_name)
1758 {
1759         int ret;
1760         char key_buf[GLUSTER_NAME_MAX + 64];
1761         char val_buf[GLUSTER_NAME_MAX + 1];
1762
1763         if (strlen(name) >= GLUSTER_NAME_MAX) {
1764                 errno = ENAMETOOLONG;
1765                 return -1;
1766         }
1767
1768         snprintf(key_buf, GLUSTER_NAME_MAX + 64,
1769                  "glusterfs.get_real_filename:%s", name);
1770
1771         ret = glfs_getxattr(handle->data, path->base_name, key_buf, val_buf,
1772                             GLUSTER_NAME_MAX + 1);
1773         if (ret == -1) {
1774                 if (errno == ENOATTR) {
1775                         errno = ENOENT;
1776                 }
1777                 return -1;
1778         }
1779
1780         *found_name = talloc_strdup(mem_ctx, val_buf);
1781         if (found_name[0] == NULL) {
1782                 errno = ENOMEM;
1783                 return -1;
1784         }
1785         return 0;
1786 }
1787
1788 static const char *vfs_gluster_connectpath(struct vfs_handle_struct *handle,
1789                                 const struct smb_filename *smb_fname)
1790 {
1791         return handle->conn->connectpath;
1792 }
1793
1794 /* EA Operations */
1795
1796 static ssize_t vfs_gluster_getxattr(struct vfs_handle_struct *handle,
1797                                 const struct smb_filename *smb_fname,
1798                                 const char *name,
1799                                 void *value,
1800                                 size_t size)
1801 {
1802         return glfs_getxattr(handle->data, smb_fname->base_name,
1803                              name, value, size);
1804 }
1805
1806 static ssize_t vfs_gluster_fgetxattr(struct vfs_handle_struct *handle,
1807                                      files_struct *fsp, const char *name,
1808                                      void *value, size_t size)
1809 {
1810         glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
1811         if (glfd == NULL) {
1812                 DBG_ERR("Failed to fetch gluster fd\n");
1813                 return -1;
1814         }
1815
1816         return glfs_fgetxattr(glfd, name, value, size);
1817 }
1818
1819 static ssize_t vfs_gluster_listxattr(struct vfs_handle_struct *handle,
1820                                 const struct smb_filename *smb_fname,
1821                                 char *list,
1822                                 size_t size)
1823 {
1824         return glfs_listxattr(handle->data, smb_fname->base_name, list, size);
1825 }
1826
1827 static ssize_t vfs_gluster_flistxattr(struct vfs_handle_struct *handle,
1828                                       files_struct *fsp, char *list,
1829                                       size_t size)
1830 {
1831         glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
1832         if (glfd == NULL) {
1833                 DBG_ERR("Failed to fetch gluster fd\n");
1834                 return -1;
1835         }
1836
1837         return glfs_flistxattr(glfd, list, size);
1838 }
1839
1840 static int vfs_gluster_removexattr(struct vfs_handle_struct *handle,
1841                                 const struct smb_filename *smb_fname,
1842                                 const char *name)
1843 {
1844         return glfs_removexattr(handle->data, smb_fname->base_name, name);
1845 }
1846
1847 static int vfs_gluster_fremovexattr(struct vfs_handle_struct *handle,
1848                                     files_struct *fsp, const char *name)
1849 {
1850         glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
1851         if (glfd == NULL) {
1852                 DBG_ERR("Failed to fetch gluster fd\n");
1853                 return -1;
1854         }
1855
1856         return glfs_fremovexattr(glfd, name);
1857 }
1858
1859 static int vfs_gluster_setxattr(struct vfs_handle_struct *handle,
1860                                 const struct smb_filename *smb_fname,
1861                                 const char *name,
1862                                 const void *value, size_t size, int flags)
1863 {
1864         return glfs_setxattr(handle->data, smb_fname->base_name, name, value, size, flags);
1865 }
1866
1867 static int vfs_gluster_fsetxattr(struct vfs_handle_struct *handle,
1868                                  files_struct *fsp, const char *name,
1869                                  const void *value, size_t size, int flags)
1870 {
1871         glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
1872         if (glfd == NULL) {
1873                 DBG_ERR("Failed to fetch gluster fd\n");
1874                 return -1;
1875         }
1876
1877         return glfs_fsetxattr(glfd, name, value, size, flags);
1878 }
1879
1880 /* AIO Operations */
1881
1882 static bool vfs_gluster_aio_force(struct vfs_handle_struct *handle,
1883                                   files_struct *fsp)
1884 {
1885         return false;
1886 }
1887
1888 static NTSTATUS vfs_gluster_create_dfs_pathat(struct vfs_handle_struct *handle,
1889                                 struct files_struct *dirfsp,
1890                                 const struct smb_filename *smb_fname,
1891                                 const struct referral *reflist,
1892                                 size_t referral_count)
1893 {
1894         TALLOC_CTX *frame = talloc_stackframe();
1895         NTSTATUS status = NT_STATUS_NO_MEMORY;
1896         int ret;
1897         char *msdfs_link = NULL;
1898
1899         SMB_ASSERT(dirfsp == dirfsp->conn->cwd_fsp);
1900
1901         /* Form the msdfs_link contents */
1902         msdfs_link = msdfs_link_string(frame,
1903                                         reflist,
1904                                         referral_count);
1905         if (msdfs_link == NULL) {
1906                 goto out;
1907         }
1908
1909         ret = glfs_symlink(handle->data,
1910                         msdfs_link,
1911                         smb_fname->base_name);
1912         if (ret == 0) {
1913                 status = NT_STATUS_OK;
1914         } else {
1915                 status = map_nt_error_from_unix(errno);
1916         }
1917
1918   out:
1919
1920         TALLOC_FREE(frame);
1921         return status;
1922 }
1923
1924 /*
1925  * Read and return the contents of a DFS redirect given a
1926  * pathname. A caller can pass in NULL for ppreflist and
1927  * preferral_count but still determine if this was a
1928  * DFS redirect point by getting NT_STATUS_OK back
1929  * without incurring the overhead of reading and parsing
1930  * the referral contents.
1931  */
1932
1933 static NTSTATUS vfs_gluster_read_dfs_pathat(struct vfs_handle_struct *handle,
1934                                 TALLOC_CTX *mem_ctx,
1935                                 struct files_struct *dirfsp,
1936                                 const struct smb_filename *smb_fname,
1937                                 struct referral **ppreflist,
1938                                 size_t *preferral_count)
1939 {
1940         NTSTATUS status = NT_STATUS_NO_MEMORY;
1941         size_t bufsize;
1942         char *link_target = NULL;
1943         int referral_len;
1944         bool ok;
1945 #if defined(HAVE_BROKEN_READLINK)
1946         char link_target_buf[PATH_MAX];
1947 #else
1948         char link_target_buf[7];
1949 #endif
1950
1951         SMB_ASSERT(dirfsp == dirfsp->conn->cwd_fsp);
1952
1953         if (ppreflist == NULL && preferral_count == NULL) {
1954                 /*
1955                  * We're only checking if this is a DFS
1956                  * redirect. We don't need to return data.
1957                  */
1958                 bufsize = sizeof(link_target_buf);
1959                 link_target = link_target_buf;
1960         } else {
1961                 bufsize = PATH_MAX;
1962                 link_target = talloc_array(mem_ctx, char, bufsize);
1963                 if (!link_target) {
1964                         goto err;
1965                 }
1966         }
1967
1968         referral_len = glfs_readlink(handle->data,
1969                                 smb_fname->base_name,
1970                                 link_target,
1971                                 bufsize - 1);
1972         if (referral_len < 0) {
1973                 if (errno == EINVAL) {
1974                         DBG_INFO("%s is not a link.\n", smb_fname->base_name);
1975                         status = NT_STATUS_OBJECT_TYPE_MISMATCH;
1976                 } else {
1977                         status = map_nt_error_from_unix(errno);
1978                         DBG_ERR("Error reading "
1979                                 "msdfs link %s: %s\n",
1980                                 smb_fname->base_name,
1981                                 strerror(errno));
1982                 }
1983                 goto err;
1984         }
1985         link_target[referral_len] = '\0';
1986
1987         DBG_INFO("%s -> %s\n",
1988                         smb_fname->base_name,
1989                         link_target);
1990
1991         if (!strnequal(link_target, "msdfs:", 6)) {
1992                 status = NT_STATUS_OBJECT_TYPE_MISMATCH;
1993                 goto err;
1994         }
1995
1996         if (ppreflist == NULL && preferral_count == NULL) {
1997                 /* Early return for checking if this is a DFS link. */
1998                 return NT_STATUS_OK;
1999         }
2000
2001         ok = parse_msdfs_symlink(mem_ctx,
2002                         lp_msdfs_shuffle_referrals(SNUM(handle->conn)),
2003                         link_target,
2004                         ppreflist,
2005                         preferral_count);
2006
2007         if (ok) {
2008                 status = NT_STATUS_OK;
2009         } else {
2010                 status = NT_STATUS_NO_MEMORY;
2011         }
2012
2013   err:
2014
2015         if (link_target != link_target_buf) {
2016                 TALLOC_FREE(link_target);
2017         }
2018         return status;
2019 }
2020
2021 static struct vfs_fn_pointers glusterfs_fns = {
2022
2023         /* Disk Operations */
2024
2025         .connect_fn = vfs_gluster_connect,
2026         .disconnect_fn = vfs_gluster_disconnect,
2027         .disk_free_fn = vfs_gluster_disk_free,
2028         .get_quota_fn = vfs_gluster_get_quota,
2029         .set_quota_fn = vfs_gluster_set_quota,
2030         .statvfs_fn = vfs_gluster_statvfs,
2031         .fs_capabilities_fn = vfs_gluster_fs_capabilities,
2032
2033         .get_dfs_referrals_fn = NULL,
2034
2035         /* Directory Operations */
2036
2037         .fdopendir_fn = vfs_gluster_fdopendir,
2038         .readdir_fn = vfs_gluster_readdir,
2039         .seekdir_fn = vfs_gluster_seekdir,
2040         .telldir_fn = vfs_gluster_telldir,
2041         .rewind_dir_fn = vfs_gluster_rewinddir,
2042         .mkdirat_fn = vfs_gluster_mkdirat,
2043         .closedir_fn = vfs_gluster_closedir,
2044
2045         /* File Operations */
2046
2047         .open_fn = vfs_gluster_open,
2048         .create_file_fn = NULL,
2049         .close_fn = vfs_gluster_close,
2050         .pread_fn = vfs_gluster_pread,
2051         .pread_send_fn = vfs_gluster_pread_send,
2052         .pread_recv_fn = vfs_gluster_pread_recv,
2053         .pwrite_fn = vfs_gluster_pwrite,
2054         .pwrite_send_fn = vfs_gluster_pwrite_send,
2055         .pwrite_recv_fn = vfs_gluster_pwrite_recv,
2056         .lseek_fn = vfs_gluster_lseek,
2057         .sendfile_fn = vfs_gluster_sendfile,
2058         .recvfile_fn = vfs_gluster_recvfile,
2059         .renameat_fn = vfs_gluster_renameat,
2060         .fsync_send_fn = vfs_gluster_fsync_send,
2061         .fsync_recv_fn = vfs_gluster_fsync_recv,
2062
2063         .stat_fn = vfs_gluster_stat,
2064         .fstat_fn = vfs_gluster_fstat,
2065         .lstat_fn = vfs_gluster_lstat,
2066         .get_alloc_size_fn = vfs_gluster_get_alloc_size,
2067         .unlinkat_fn = vfs_gluster_unlinkat,
2068
2069         .chmod_fn = vfs_gluster_chmod,
2070         .fchmod_fn = vfs_gluster_fchmod,
2071         .fchown_fn = vfs_gluster_fchown,
2072         .lchown_fn = vfs_gluster_lchown,
2073         .chdir_fn = vfs_gluster_chdir,
2074         .getwd_fn = vfs_gluster_getwd,
2075         .ntimes_fn = vfs_gluster_ntimes,
2076         .ftruncate_fn = vfs_gluster_ftruncate,
2077         .fallocate_fn = vfs_gluster_fallocate,
2078         .lock_fn = vfs_gluster_lock,
2079         .kernel_flock_fn = vfs_gluster_kernel_flock,
2080         .fcntl_fn = vfs_gluster_fcntl,
2081         .linux_setlease_fn = vfs_gluster_linux_setlease,
2082         .getlock_fn = vfs_gluster_getlock,
2083         .symlinkat_fn = vfs_gluster_symlinkat,
2084         .readlinkat_fn = vfs_gluster_readlinkat,
2085         .linkat_fn = vfs_gluster_linkat,
2086         .mknodat_fn = vfs_gluster_mknodat,
2087         .realpath_fn = vfs_gluster_realpath,
2088         .chflags_fn = vfs_gluster_chflags,
2089         .file_id_create_fn = NULL,
2090         .streaminfo_fn = NULL,
2091         .get_real_filename_fn = vfs_gluster_get_real_filename,
2092         .connectpath_fn = vfs_gluster_connectpath,
2093         .create_dfs_pathat_fn = vfs_gluster_create_dfs_pathat,
2094         .read_dfs_pathat_fn = vfs_gluster_read_dfs_pathat,
2095
2096         .brl_lock_windows_fn = NULL,
2097         .brl_unlock_windows_fn = NULL,
2098         .strict_lock_check_fn = NULL,
2099         .translate_name_fn = NULL,
2100         .fsctl_fn = NULL,
2101
2102         /* NT ACL Operations */
2103         .fget_nt_acl_fn = NULL,
2104         .get_nt_acl_fn = NULL,
2105         .get_nt_acl_at_fn = NULL,
2106         .fset_nt_acl_fn = NULL,
2107         .audit_file_fn = NULL,
2108
2109         /* Posix ACL Operations */
2110         .sys_acl_get_file_fn = posixacl_xattr_acl_get_file,
2111         .sys_acl_get_fd_fn = posixacl_xattr_acl_get_fd,
2112         .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
2113         .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
2114         .sys_acl_set_file_fn = posixacl_xattr_acl_set_file,
2115         .sys_acl_set_fd_fn = posixacl_xattr_acl_set_fd,
2116         .sys_acl_delete_def_file_fn = posixacl_xattr_acl_delete_def_file,
2117
2118         /* EA Operations */
2119         .getxattr_fn = vfs_gluster_getxattr,
2120         .getxattrat_send_fn = vfs_not_implemented_getxattrat_send,
2121         .getxattrat_recv_fn = vfs_not_implemented_getxattrat_recv,
2122         .fgetxattr_fn = vfs_gluster_fgetxattr,
2123         .listxattr_fn = vfs_gluster_listxattr,
2124         .flistxattr_fn = vfs_gluster_flistxattr,
2125         .removexattr_fn = vfs_gluster_removexattr,
2126         .fremovexattr_fn = vfs_gluster_fremovexattr,
2127         .setxattr_fn = vfs_gluster_setxattr,
2128         .fsetxattr_fn = vfs_gluster_fsetxattr,
2129
2130         /* AIO Operations */
2131         .aio_force_fn = vfs_gluster_aio_force,
2132
2133         /* Durable handle Operations */
2134         .durable_cookie_fn = NULL,
2135         .durable_disconnect_fn = NULL,
2136         .durable_reconnect_fn = NULL,
2137 };
2138
2139 static_decl_vfs;
2140 NTSTATUS vfs_glusterfs_init(TALLOC_CTX *ctx)
2141 {
2142         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
2143                                 "glusterfs", &glusterfs_fns);
2144 }