source3/modules/vfs_glusterfs.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Wrap GlusterFS GFAPI calls in vfs functions.
   5
   6    Copyright (c) 2013 Anand Avati <avati@redhat.com>
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 /**
  23  * @file   vfs_glusterfs.c
  24  * @author Anand Avati <avati@redhat.com>
  25  * @date   May 2013
  26  * @brief  Samba VFS module for glusterfs
  27  *
  28  * @todo
  29  *   - sendfile/recvfile support
  30  *
  31  * A Samba VFS module for GlusterFS, based on Gluster's libgfapi.
  32  * This is a "bottom" vfs module (not something to be stacked on top of
  33  * another module), and translates (most) calls to the closest actions
  34  * available in libgfapi.
  35  *
  36  */
  37
  38 #include "includes.h"
  39 #include "smbd/smbd.h"
  40 #include <stdio.h>
  41 #include <glusterfs/api/glfs.h>
  42 #include "lib/util/dlinklist.h"
  43 #include "lib/util/tevent_unix.h"
  44 #include "smbd/globals.h"
  45 #include "lib/util/sys_rw.h"
  46 #include "smbprofile.h"
  47 #include "modules/posixacl_xattr.h"
  48
  49 #define DEFAULT_VOLFILE_SERVER "localhost"
  50
  51 static int read_fd = -1;
  52 static int write_fd = -1;
  53 static struct tevent_fd *aio_read_event = NULL;
  54
  55 /**
  56  * Helper to convert struct stat to struct stat_ex.
  57  */
  58 static void smb_stat_ex_from_stat(struct stat_ex *dst, const struct stat *src)
  59 {
  60         ZERO_STRUCTP(dst);
  61
  62         dst->st_ex_dev = src->st_dev;
  63         dst->st_ex_ino = src->st_ino;
  64         dst->st_ex_mode = src->st_mode;
  65         dst->st_ex_nlink = src->st_nlink;
  66         dst->st_ex_uid = src->st_uid;
  67         dst->st_ex_gid = src->st_gid;
  68         dst->st_ex_rdev = src->st_rdev;
  69         dst->st_ex_size = src->st_size;
  70         dst->st_ex_atime.tv_sec = src->st_atime;
  71         dst->st_ex_mtime.tv_sec = src->st_mtime;
  72         dst->st_ex_ctime.tv_sec = src->st_ctime;
  73         dst->st_ex_btime.tv_sec = src->st_mtime;
  74         dst->st_ex_blksize = src->st_blksize;
  75         dst->st_ex_blocks = src->st_blocks;
  76 #ifdef STAT_HAVE_NSEC
  77         dst->st_ex_atime.tv_nsec = src->st_atime_nsec;
  78         dst->st_ex_mtime.tv_nsec = src->st_mtime_nsec;
  79         dst->st_ex_ctime.tv_nsec = src->st_ctime_nsec;
  80         dst->st_ex_btime.tv_nsec = src->st_mtime_nsec;
  81 #endif
  82 }
  83
  84 /* pre-opened glfs_t */
  85
  86 static struct glfs_preopened {
  87         char *volume;
  88         char *connectpath;
  89         glfs_t *fs;
  90         int ref;
  91         struct glfs_preopened *next, *prev;
  92 } *glfs_preopened;
  93
  94
  95 static int glfs_set_preopened(const char *volume, const char *connectpath, glfs_t *fs)
  96 {
  97         struct glfs_preopened *entry = NULL;
  98
  99         entry = talloc_zero(NULL, struct glfs_preopened);
 100         if (!entry) {
 101                 errno = ENOMEM;
 102                 return -1;
 103         }
 104
 105         entry->volume = talloc_strdup(entry, volume);
 106         if (!entry->volume) {
 107                 talloc_free(entry);
 108                 errno = ENOMEM;
 109                 return -1;
 110         }
 111
 112         entry->connectpath = talloc_strdup(entry, connectpath);
 113         if (entry->connectpath == NULL) {
 114                 talloc_free(entry);
 115                 errno = ENOMEM;
 116                 return -1;
 117         }
 118
 119         entry->fs = fs;
 120         entry->ref = 1;
 121
 122         DLIST_ADD(glfs_preopened, entry);
 123
 124         return 0;
 125 }
 126
 127 static glfs_t *glfs_find_preopened(const char *volume, const char *connectpath)
 128 {
 129         struct glfs_preopened *entry = NULL;
 130
 131         for (entry = glfs_preopened; entry; entry = entry->next) {
 132                 if (strcmp(entry->volume, volume) == 0 &&
 133                     strcmp(entry->connectpath, connectpath) == 0)
 134                 {
 135                         entry->ref++;
 136                         return entry->fs;
 137                 }
 138         }
 139
 140         return NULL;
 141 }
 142
 143 static void glfs_clear_preopened(glfs_t *fs)
 144 {
 145         struct glfs_preopened *entry = NULL;
 146
 147         for (entry = glfs_preopened; entry; entry = entry->next) {
 148                 if (entry->fs == fs) {
 149                         if (--entry->ref)
 150                                 return;
 151
 152                         DLIST_REMOVE(glfs_preopened, entry);
 153
 154                         glfs_fini(entry->fs);
 155                         talloc_free(entry);
 156                 }
 157         }
 158 }
 159
 160 static int vfs_gluster_set_volfile_servers(glfs_t *fs,
 161                                            const char *volfile_servers)
 162 {
 163         char *server = NULL;
 164         int   server_count = 0;
 165         int   server_success = 0;
 166         int   ret = -1;
 167         TALLOC_CTX *frame = talloc_stackframe();
 168
 169         DBG_INFO("servers list %s\n", volfile_servers);
 170
 171         while (next_token_talloc(frame, &volfile_servers, &server, " \t")) {
 172                 char *transport = NULL;
 173                 char *host = NULL;
 174                 int   port = 0;
 175
 176                 server_count++;
 177                 DBG_INFO("server %d %s\n", server_count, server);
 178
 179                 /* Determine the transport type */
 180                 if (strncmp(server, "unix+", 5) == 0) {
 181                         port = 0;
 182                         transport = talloc_strdup(frame, "unix");
 183                         if (!transport) {
 184                                 errno = ENOMEM;
 185                                 goto out;
 186                         }
 187                         host = talloc_strdup(frame, server + 5);
 188                         if (!host) {
 189                                 errno = ENOMEM;
 190                                 goto out;
 191                         }
 192                 } else {
 193                         char *p = NULL;
 194                         char *port_index = NULL;
 195
 196                         if (strncmp(server, "tcp+", 4) == 0) {
 197                                 server += 4;
 198                         }
 199
 200                         /* IPv6 is enclosed in []
 201                          * ':' before ']' is part of IPv6
 202                          * ':' after  ']' indicates port
 203                          */
 204                         p = server;
 205                         if (server[0] == '[') {
 206                                 server++;
 207                                 p = index(server, ']');
 208                                 if (p == NULL) {
 209                                         /* Malformed IPv6 */
 210                                         continue;
 211                                 }
 212                                 p[0] = '\0';
 213                                 p++;
 214                         }
 215
 216                         port_index = index(p, ':');
 217
 218                         if (port_index == NULL) {
 219                                 port = 0;
 220                         } else {
 221                                 port = atoi(port_index + 1);
 222                                 port_index[0] = '\0';
 223                         }
 224                         transport = talloc_strdup(frame, "tcp");
 225                         if (!transport) {
 226                                 errno = ENOMEM;
 227                                 goto out;
 228                         }
 229                         host = talloc_strdup(frame, server);
 230                         if (!host) {
 231                                 errno = ENOMEM;
 232                                 goto out;
 233                         }
 234                 }
 235
 236                 DBG_INFO("Calling set volfile server with params "
 237                          "transport=%s, host=%s, port=%d\n", transport,
 238                           host, port);
 239
 240                 ret = glfs_set_volfile_server(fs, transport, host, port);
 241                 if (ret < 0) {
 242                         DBG_WARNING("Failed to set volfile_server "
 243                                     "transport=%s, host=%s, port=%d (%s)\n",
 244                                     transport, host, port, strerror(errno));
 245                 } else {
 246                         server_success++;
 247                 }
 248         }
 249
 250 out:
 251         if (server_count == 0) {
 252                 ret = -1;
 253         } else if (server_success < server_count) {
 254                 DBG_WARNING("Failed to set %d out of %d servers parsed\n",
 255                             server_count - server_success, server_count);
 256                 ret = 0;
 257         }
 258
 259         TALLOC_FREE(frame);
 260         return ret;
 261 }
 262
 263 /* Disk Operations */
 264
 265 static int vfs_gluster_connect(struct vfs_handle_struct *handle,
 266                                const char *service,
 267                                const char *user)
 268 {
 269         const char *volfile_servers;
 270         const char *volume;
 271         char *logfile;
 272         int loglevel;
 273         glfs_t *fs = NULL;
 274         TALLOC_CTX *tmp_ctx;
 275         int ret = 0;
 276
 277         tmp_ctx = talloc_new(NULL);
 278         if (tmp_ctx == NULL) {
 279                 ret = -1;
 280                 goto done;
 281         }
 282         logfile = lp_parm_talloc_string(tmp_ctx, SNUM(handle->conn), "glusterfs",
 283                                        "logfile", NULL);
 284
 285         loglevel = lp_parm_int(SNUM(handle->conn), "glusterfs", "loglevel", -1);
 286
 287         volfile_servers = lp_parm_talloc_string(tmp_ctx, SNUM(handle->conn),
 288                                                "glusterfs", "volfile_server",
 289                                                NULL);
 290         if (volfile_servers == NULL) {
 291                 volfile_servers = DEFAULT_VOLFILE_SERVER;
 292         }
 293
 294         volume = lp_parm_const_string(SNUM(handle->conn), "glusterfs", "volume",
 295                                       NULL);
 296         if (volume == NULL) {
 297                 volume = service;
 298         }
 299
 300         fs = glfs_find_preopened(volume, handle->conn->connectpath);
 301         if (fs) {
 302                 goto done;
 303         }
 304
 305         fs = glfs_new(volume);
 306         if (fs == NULL) {
 307                 ret = -1;
 308                 goto done;
 309         }
 310
 311         ret = vfs_gluster_set_volfile_servers(fs, volfile_servers);
 312         if (ret < 0) {
 313                 DBG_ERR("Failed to set volfile_servers from list %s\n",
 314                         volfile_servers);
 315                 goto done;
 316         }
 317
 318         ret = glfs_set_xlator_option(fs, "*-md-cache", "cache-posix-acl",
 319                                      "true");
 320         if (ret < 0) {
 321                 DEBUG(0, ("%s: Failed to set xlator options\n", volume));
 322                 goto done;
 323         }
 324
 325
 326         ret = glfs_set_xlator_option(fs, "*-snapview-client",
 327                                      "snapdir-entry-path",
 328                                      handle->conn->connectpath);
 329         if (ret < 0) {
 330                 DEBUG(0, ("%s: Failed to set xlator option:"
 331                           " snapdir-entry-path\n", volume));
 332                 goto done;
 333         }
 334
 335         ret = glfs_set_logging(fs, logfile, loglevel);
 336         if (ret < 0) {
 337                 DEBUG(0, ("%s: Failed to set logfile %s loglevel %d\n",
 338                           volume, logfile, loglevel));
 339                 goto done;
 340         }
 341
 342         ret = glfs_init(fs);
 343         if (ret < 0) {
 344                 DEBUG(0, ("%s: Failed to initialize volume (%s)\n",
 345                           volume, strerror(errno)));
 346                 goto done;
 347         }
 348
 349         ret = glfs_set_preopened(volume, handle->conn->connectpath, fs);
 350         if (ret < 0) {
 351                 DEBUG(0, ("%s: Failed to register volume (%s)\n",
 352                           volume, strerror(errno)));
 353                 goto done;
 354         }
 355
 356         /*
 357          * The shadow_copy2 module will fail to export subdirectories
 358          * of a gluster volume unless we specify the mount point,
 359          * because the detection fails if the file system is not
 360          * locally mounted:
 361          * https://bugzilla.samba.org/show_bug.cgi?id=13091
 362          */
 363         lp_do_parameter(SNUM(handle->conn), "shadow:mountpoint", "/");
 364
 365         /*
 366          * Unless we have an async implementation of getxattrat turn this off.
 367          */
 368         lp_do_parameter(SNUM(handle->conn), "smbd:async dosmode", "false");
 369
 370 done:
 371         if (ret < 0) {
 372                 if (fs)
 373                         glfs_fini(fs);
 374         } else {
 375                 DBG_ERR("%s: Initialized volume from servers %s\n",
 376                         volume, volfile_servers);
 377                 handle->data = fs;
 378         }
 379         talloc_free(tmp_ctx);
 380         return ret;
 381 }
 382
 383 static void vfs_gluster_disconnect(struct vfs_handle_struct *handle)
 384 {
 385         glfs_t *fs = NULL;
 386
 387         fs = handle->data;
 388
 389         glfs_clear_preopened(fs);
 390 }
 391
 392 static uint64_t vfs_gluster_disk_free(struct vfs_handle_struct *handle,
 393                                 const struct smb_filename *smb_fname,
 394                                 uint64_t *bsize_p,
 395                                 uint64_t *dfree_p,
 396                                 uint64_t *dsize_p)
 397 {
 398         struct statvfs statvfs = { 0, };
 399         int ret;
 400
 401         ret = glfs_statvfs(handle->data, smb_fname->base_name, &statvfs);
 402         if (ret < 0) {
 403                 return -1;
 404         }
 405
 406         if (bsize_p != NULL) {
 407                 *bsize_p = (uint64_t)statvfs.f_bsize; /* Block size */
 408         }
 409         if (dfree_p != NULL) {
 410                 *dfree_p = (uint64_t)statvfs.f_bavail; /* Available Block units */
 411         }
 412         if (dsize_p != NULL) {
 413                 *dsize_p = (uint64_t)statvfs.f_blocks; /* Total Block units */
 414         }
 415
 416         return (uint64_t)statvfs.f_bavail;
 417 }
 418
 419 static int vfs_gluster_get_quota(struct vfs_handle_struct *handle,
 420                                 const struct smb_filename *smb_fname,
 421                                 enum SMB_QUOTA_TYPE qtype,
 422                                 unid_t id,
 423                                 SMB_DISK_QUOTA *qt)
 424 {
 425         errno = ENOSYS;
 426         return -1;
 427 }
 428
 429 static int
 430 vfs_gluster_set_quota(struct vfs_handle_struct *handle,
 431                       enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
 432 {
 433         errno = ENOSYS;
 434         return -1;
 435 }
 436
 437 static int vfs_gluster_statvfs(struct vfs_handle_struct *handle,
 438                                 const struct smb_filename *smb_fname,
 439                                 struct vfs_statvfs_struct *vfs_statvfs)
 440 {
 441         struct statvfs statvfs = { 0, };
 442         int ret;
 443
 444         ret = glfs_statvfs(handle->data, smb_fname->base_name, &statvfs);
 445         if (ret < 0) {
 446                 DEBUG(0, ("glfs_statvfs(%s) failed: %s\n",
 447                           smb_fname->base_name, strerror(errno)));
 448                 return -1;
 449         }
 450
 451         ZERO_STRUCTP(vfs_statvfs);
 452
 453         vfs_statvfs->OptimalTransferSize = statvfs.f_frsize;
 454         vfs_statvfs->BlockSize = statvfs.f_bsize;
 455         vfs_statvfs->TotalBlocks = statvfs.f_blocks;
 456         vfs_statvfs->BlocksAvail = statvfs.f_bfree;
 457         vfs_statvfs->UserBlocksAvail = statvfs.f_bavail;
 458         vfs_statvfs->TotalFileNodes = statvfs.f_files;
 459         vfs_statvfs->FreeFileNodes = statvfs.f_ffree;
 460         vfs_statvfs->FsIdentifier = statvfs.f_fsid;
 461         vfs_statvfs->FsCapabilities =
 462             FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
 463
 464         return ret;
 465 }
 466
 467 static uint32_t vfs_gluster_fs_capabilities(struct vfs_handle_struct *handle,
 468                                             enum timestamp_set_resolution *p_ts_res)
 469 {
 470         uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
 471
 472 #ifdef HAVE_GFAPI_VER_6
 473         caps |= FILE_SUPPORTS_SPARSE_FILES;
 474 #endif
 475
 476 #ifdef STAT_HAVE_NSEC
 477         *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
 478 #endif
 479
 480         return caps;
 481 }
 482
 483 static DIR *vfs_gluster_opendir(struct vfs_handle_struct *handle,
 484                                 const struct smb_filename *smb_fname,
 485                                 const char *mask,
 486                                 uint32_t attributes)
 487 {
 488         glfs_fd_t *fd;
 489
 490         fd = glfs_opendir(handle->data, smb_fname->base_name);
 491         if (fd == NULL) {
 492                 DEBUG(0, ("glfs_opendir(%s) failed: %s\n",
 493                           smb_fname->base_name, strerror(errno)));
 494         }
 495
 496         return (DIR *) fd;
 497 }
 498
 499 static DIR *vfs_gluster_fdopendir(struct vfs_handle_struct *handle,
 500                                   files_struct *fsp, const char *mask,
 501                                   uint32_t attributes)
 502 {
 503         return (DIR *) *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
 504 }
 505
 506 static int vfs_gluster_closedir(struct vfs_handle_struct *handle, DIR *dirp)
 507 {
 508         return glfs_closedir((void *)dirp);
 509 }
 510
 511 static struct dirent *vfs_gluster_readdir(struct vfs_handle_struct *handle,
 512                                           DIR *dirp, SMB_STRUCT_STAT *sbuf)
 513 {
 514         static char direntbuf[512];
 515         int ret;
 516         struct stat stat;
 517         struct dirent *dirent = 0;
 518
 519         if (sbuf != NULL) {
 520                 ret = glfs_readdirplus_r((void *)dirp, &stat, (void *)direntbuf,
 521                                          &dirent);
 522         } else {
 523                 ret = glfs_readdir_r((void *)dirp, (void *)direntbuf, &dirent);
 524         }
 525
 526         if ((ret < 0) || (dirent == NULL)) {
 527                 return NULL;
 528         }
 529
 530         if (sbuf != NULL) {
 531                 smb_stat_ex_from_stat(sbuf, &stat);
 532         }
 533
 534         return dirent;
 535 }
 536
 537 static long vfs_gluster_telldir(struct vfs_handle_struct *handle, DIR *dirp)
 538 {
 539         return glfs_telldir((void *)dirp);
 540 }
 541
 542 static void vfs_gluster_seekdir(struct vfs_handle_struct *handle, DIR *dirp,
 543                                 long offset)
 544 {
 545         glfs_seekdir((void *)dirp, offset);
 546 }
 547
 548 static void vfs_gluster_rewinddir(struct vfs_handle_struct *handle, DIR *dirp)
 549 {
 550         glfs_seekdir((void *)dirp, 0);
 551 }
 552
 553 static int vfs_gluster_mkdir(struct vfs_handle_struct *handle,
 554                              const struct smb_filename *smb_fname,
 555                              mode_t mode)
 556 {
 557         return glfs_mkdir(handle->data, smb_fname->base_name, mode);
 558 }
 559
 560 static int vfs_gluster_rmdir(struct vfs_handle_struct *handle,
 561                         const struct smb_filename *smb_fname)
 562 {
 563         return glfs_rmdir(handle->data, smb_fname->base_name);
 564 }
 565
 566 static int vfs_gluster_open(struct vfs_handle_struct *handle,
 567                             struct smb_filename *smb_fname, files_struct *fsp,
 568                             int flags, mode_t mode)
 569 {
 570         glfs_fd_t *glfd;
 571         glfs_fd_t **p_tmp;
 572
 573         if (flags & O_DIRECTORY) {
 574                 glfd = glfs_opendir(handle->data, smb_fname->base_name);
 575         } else if (flags & O_CREAT) {
 576                 glfd = glfs_creat(handle->data, smb_fname->base_name, flags,
 577                                   mode);
 578         } else {
 579                 glfd = glfs_open(handle->data, smb_fname->base_name, flags);
 580         }
 581
 582         if (glfd == NULL) {
 583                 return -1;
 584         }
 585         p_tmp = VFS_ADD_FSP_EXTENSION(handle, fsp, glfs_fd_t *, NULL);
 586         *p_tmp = glfd;
 587         /* An arbitrary value for error reporting, so you know its us. */
 588         return 13371337;
 589 }
 590
 591 static int vfs_gluster_close(struct vfs_handle_struct *handle,
 592                              files_struct *fsp)
 593 {
 594         glfs_fd_t *glfd;
 595         glfd = *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
 596         VFS_REMOVE_FSP_EXTENSION(handle, fsp);
 597         return glfs_close(glfd);
 598 }
 599
 600 static ssize_t vfs_gluster_pread(struct vfs_handle_struct *handle,
 601                                  files_struct *fsp, void *data, size_t n,
 602                                  off_t offset)
 603 {
 604         return glfs_pread(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, offset, 0);
 605 }
 606
 607 struct glusterfs_aio_state;
 608
 609 struct glusterfs_aio_wrapper {
 610         struct glusterfs_aio_state *state;
 611 };
 612
 613 struct glusterfs_aio_state {
 614         ssize_t ret;
 615         struct tevent_req *req;
 616         bool cancelled;
 617         struct vfs_aio_state vfs_aio_state;
 618         struct timespec start;
 619 };
 620
 621 static int aio_wrapper_destructor(struct glusterfs_aio_wrapper *wrap)
 622 {
 623         if (wrap->state != NULL) {
 624                 wrap->state->cancelled = true;
 625         }
 626
 627         return 0;
 628 }
 629
 630 /*
 631  * This function is the callback that will be called on glusterfs
 632  * threads once the async IO submitted is complete. To notify
 633  * Samba of the completion we use a pipe based queue.
 634  */
 635 static void aio_glusterfs_done(glfs_fd_t *fd, ssize_t ret, void *data)
 636 {
 637         struct glusterfs_aio_state *state = NULL;
 638         int sts = 0;
 639         struct timespec end;
 640
 641         state = (struct glusterfs_aio_state *)data;
 642
 643         PROFILE_TIMESTAMP(&end);
 644
 645         if (ret < 0) {
 646                 state->ret = -1;
 647                 state->vfs_aio_state.error = errno;
 648         } else {
 649                 state->ret = ret;
 650         }
 651         state->vfs_aio_state.duration = nsec_time_diff(&end, &state->start);
 652
 653         /*
 654          * Write the state pointer to glusterfs_aio_state to the
 655          * pipe, so we can call tevent_req_done() from the main thread,
 656          * because tevent_req_done() is not designed to be executed in
 657          * the multithread environment, so tevent_req_done() must be
 658          * executed from the smbd main thread.
 659          *
 660          * write(2) on pipes with sizes under _POSIX_PIPE_BUF
 661          * in size is atomic, without this, the use op pipes in this
 662          * code would not work.
 663          *
 664          * sys_write is a thin enough wrapper around write(2)
 665          * that we can trust it here.
 666          */
 667
 668         sts = sys_write(write_fd, &state, sizeof(struct glusterfs_aio_state *));
 669         if (sts < 0) {
 670                 DEBUG(0,("\nWrite to pipe failed (%s)", strerror(errno)));
 671         }
 672
 673         return;
 674 }
 675
 676 /*
 677  * Read each req off the pipe and process it.
 678  */
 679 static void aio_tevent_fd_done(struct tevent_context *event_ctx,
 680                                 struct tevent_fd *fde,
 681                                 uint16_t flags, void *data)
 682 {
 683         struct tevent_req *req = NULL;
 684         struct glusterfs_aio_state *state = NULL;
 685         int sts = 0;
 686
 687         /*
 688          * read(2) on pipes is atomic if the needed data is available
 689          * in the pipe, per SUS and POSIX.  Because we always write
 690          * to the pipe in sizeof(struct tevent_req *) chunks, we can
 691          * always read in those chunks, atomically.
 692          *
 693          * sys_read is a thin enough wrapper around read(2) that we
 694          * can trust it here.
 695          */
 696
 697         sts = sys_read(read_fd, &state, sizeof(struct glusterfs_aio_state *));
 698
 699         if (sts < 0) {
 700                 DEBUG(0,("\nRead from pipe failed (%s)", strerror(errno)));
 701         }
 702
 703         /* if we've cancelled the op, there is no req, so just clean up. */
 704         if (state->cancelled == true) {
 705                 TALLOC_FREE(state);
 706                 return;
 707         }
 708
 709         req = state->req;
 710
 711         if (req) {
 712                 tevent_req_done(req);
 713         }
 714         return;
 715 }
 716
 717 static bool init_gluster_aio(struct vfs_handle_struct *handle)
 718 {
 719         int fds[2];
 720         int ret = -1;
 721
 722         if (read_fd != -1) {
 723                 /*
 724                  * Already initialized.
 725                  */
 726                 return true;
 727         }
 728
 729         ret = pipe(fds);
 730         if (ret == -1) {
 731                 goto fail;
 732         }
 733
 734         read_fd = fds[0];
 735         write_fd = fds[1];
 736
 737         /*
 738          * We use the raw tevent context here,
 739          * as this is a global event handler.
 740          *
 741          * The tevent_req_defer_callback()
 742          * calls will make sure the results
 743          * of async calls are propagated
 744          * to the correct tevent_context.
 745          */
 746         aio_read_event = tevent_add_fd(handle->conn->sconn->raw_ev_ctx,
 747                                         NULL,
 748                                         read_fd,
 749                                         TEVENT_FD_READ,
 750                                         aio_tevent_fd_done,
 751                                         NULL);
 752         if (aio_read_event == NULL) {
 753                 goto fail;
 754         }
 755
 756         return true;
 757 fail:
 758         TALLOC_FREE(aio_read_event);
 759         if (read_fd != -1) {
 760                 close(read_fd);
 761                 close(write_fd);
 762                 read_fd = -1;
 763                 write_fd = -1;
 764         }
 765         return false;
 766 }
 767
 768 static struct glusterfs_aio_state *aio_state_create(TALLOC_CTX *mem_ctx)
 769 {
 770         struct tevent_req *req = NULL;
 771         struct glusterfs_aio_state *state = NULL;
 772         struct glusterfs_aio_wrapper *wrapper = NULL;
 773
 774         req = tevent_req_create(mem_ctx, &wrapper, struct glusterfs_aio_wrapper);
 775
 776         if (req == NULL) {
 777                 return NULL;
 778         }
 779
 780         state = talloc_zero(NULL, struct glusterfs_aio_state);
 781
 782         if (state == NULL) {
 783                 TALLOC_FREE(req);
 784                 return NULL;
 785         }
 786
 787         talloc_set_destructor(wrapper, aio_wrapper_destructor);
 788         state->cancelled = false;
 789         state->req = req;
 790
 791         wrapper->state = state;
 792
 793         return state;
 794 }
 795
 796 static struct tevent_req *vfs_gluster_pread_send(struct vfs_handle_struct
 797                                                   *handle, TALLOC_CTX *mem_ctx,
 798                                                   struct tevent_context *ev,
 799                                                   files_struct *fsp,
 800                                                   void *data, size_t n,
 801                                                   off_t offset)
 802 {
 803         struct glusterfs_aio_state *state = NULL;
 804         struct tevent_req *req = NULL;
 805         int ret = 0;
 806
 807         state = aio_state_create(mem_ctx);
 808
 809         if (state == NULL) {
 810                 return NULL;
 811         }
 812
 813         req = state->req;
 814
 815         if (!init_gluster_aio(handle)) {
 816                 tevent_req_error(req, EIO);
 817                 return tevent_req_post(req, ev);
 818         }
 819
 820         /*
 821          * aio_glusterfs_done and aio_tevent_fd_done()
 822          * use the raw tevent context. We need to use
 823          * tevent_req_defer_callback() in order to
 824          * use the event context we're started with.
 825          */
 826         tevent_req_defer_callback(req, ev);
 827
 828         PROFILE_TIMESTAMP(&state->start);
 829         ret = glfs_pread_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
 830                                 fsp), data, n, offset, 0, aio_glusterfs_done,
 831                                 state);
 832         if (ret < 0) {
 833                 tevent_req_error(req, -ret);
 834                 return tevent_req_post(req, ev);
 835         }
 836
 837         return req;
 838 }
 839
 840 static struct tevent_req *vfs_gluster_pwrite_send(struct vfs_handle_struct
 841                                                   *handle, TALLOC_CTX *mem_ctx,
 842                                                   struct tevent_context *ev,
 843                                                   files_struct *fsp,
 844                                                   const void *data, size_t n,
 845                                                   off_t offset)
 846 {
 847         struct glusterfs_aio_state *state = NULL;
 848         struct tevent_req *req = NULL;
 849         int ret = 0;
 850
 851         state = aio_state_create(mem_ctx);
 852
 853         if (state == NULL) {
 854                 return NULL;
 855         }
 856
 857         req = state->req;
 858
 859         if (!init_gluster_aio(handle)) {
 860                 tevent_req_error(req, EIO);
 861                 return tevent_req_post(req, ev);
 862         }
 863
 864         /*
 865          * aio_glusterfs_done and aio_tevent_fd_done()
 866          * use the raw tevent context. We need to use
 867          * tevent_req_defer_callback() in order to
 868          * use the event context we're started with.
 869          */
 870         tevent_req_defer_callback(req, ev);
 871
 872         PROFILE_TIMESTAMP(&state->start);
 873         ret = glfs_pwrite_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
 874                                 fsp), data, n, offset, 0, aio_glusterfs_done,
 875                                 state);
 876         if (ret < 0) {
 877                 tevent_req_error(req, -ret);
 878                 return tevent_req_post(req, ev);
 879         }
 880
 881         return req;
 882 }
 883
 884 static ssize_t vfs_gluster_recv(struct tevent_req *req,
 885                                 struct vfs_aio_state *vfs_aio_state)
 886 {
 887         struct glusterfs_aio_wrapper *wrapper = NULL;
 888         int ret = 0;
 889
 890         wrapper = tevent_req_data(req, struct glusterfs_aio_wrapper);
 891
 892         if (wrapper == NULL) {
 893                 return -1;
 894         }
 895
 896         if (wrapper->state == NULL) {
 897                 return -1;
 898         }
 899
 900         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
 901                 return -1;
 902         }
 903
 904         *vfs_aio_state = wrapper->state->vfs_aio_state;
 905         ret = wrapper->state->ret;
 906
 907         /* Clean up the state, it is in a NULL context. */
 908
 909         TALLOC_FREE(wrapper->state);
 910
 911         return ret;
 912 }
 913
 914 static ssize_t vfs_gluster_pwrite(struct vfs_handle_struct *handle,
 915                                   files_struct *fsp, const void *data,
 916                                   size_t n, off_t offset)
 917 {
 918         return glfs_pwrite(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, offset, 0);
 919 }
 920
 921 static off_t vfs_gluster_lseek(struct vfs_handle_struct *handle,
 922                                files_struct *fsp, off_t offset, int whence)
 923 {
 924         return glfs_lseek(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), offset, whence);
 925 }
 926
 927 static ssize_t vfs_gluster_sendfile(struct vfs_handle_struct *handle, int tofd,
 928                                     files_struct *fromfsp,
 929                                     const DATA_BLOB *hdr,
 930                                     off_t offset, size_t n)
 931 {
 932         errno = ENOTSUP;
 933         return -1;
 934 }
 935
 936 static ssize_t vfs_gluster_recvfile(struct vfs_handle_struct *handle,
 937                                     int fromfd, files_struct *tofsp,
 938                                     off_t offset, size_t n)
 939 {
 940         errno = ENOTSUP;
 941         return -1;
 942 }
 943
 944 static int vfs_gluster_rename(struct vfs_handle_struct *handle,
 945                               const struct smb_filename *smb_fname_src,
 946                               const struct smb_filename *smb_fname_dst)
 947 {
 948         return glfs_rename(handle->data, smb_fname_src->base_name,
 949                            smb_fname_dst->base_name);
 950 }
 951
 952 static struct tevent_req *vfs_gluster_fsync_send(struct vfs_handle_struct
 953                                                  *handle, TALLOC_CTX *mem_ctx,
 954                                                  struct tevent_context *ev,
 955                                                  files_struct *fsp)
 956 {
 957         struct tevent_req *req = NULL;
 958         struct glusterfs_aio_state *state = NULL;
 959         int ret = 0;
 960
 961         state = aio_state_create(mem_ctx);
 962
 963         if (state == NULL) {
 964                 return NULL;
 965         }
 966
 967         req = state->req;
 968
 969         if (!init_gluster_aio(handle)) {
 970                 tevent_req_error(req, EIO);
 971                 return tevent_req_post(req, ev);
 972         }
 973
 974         /*
 975          * aio_glusterfs_done and aio_tevent_fd_done()
 976          * use the raw tevent context. We need to use
 977          * tevent_req_defer_callback() in order to
 978          * use the event context we're started with.
 979          */
 980         tevent_req_defer_callback(req, ev);
 981
 982         PROFILE_TIMESTAMP(&state->start);
 983         ret = glfs_fsync_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
 984                                 fsp), aio_glusterfs_done, state);
 985         if (ret < 0) {
 986                 tevent_req_error(req, -ret);
 987                 return tevent_req_post(req, ev);
 988         }
 989         return req;
 990 }
 991
 992 static int vfs_gluster_fsync_recv(struct tevent_req *req,
 993                                   struct vfs_aio_state *vfs_aio_state)
 994 {
 995         /*
 996          * Use implicit conversion ssize_t->int
 997          */
 998         return vfs_gluster_recv(req, vfs_aio_state);
 999 }
1000
1001 static int vfs_gluster_stat(struct vfs_handle_struct *handle,
1002                             struct smb_filename *smb_fname)
1003 {
1004         struct stat st;
1005         int ret;
1006
1007         ret = glfs_stat(handle->data, smb_fname->base_name, &st);
1008         if (ret == 0) {
1009                 smb_stat_ex_from_stat(&smb_fname->st, &st);
1010         }
1011         if (ret < 0 && errno != ENOENT) {
1012                 DEBUG(0, ("glfs_stat(%s) failed: %s\n",
1013                           smb_fname->base_name, strerror(errno)));
1014         }
1015         return ret;
1016 }
1017
1018 static int vfs_gluster_fstat(struct vfs_handle_struct *handle,
1019                              files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1020 {
1021         struct stat st;
1022         int ret;
1023
1024         ret = glfs_fstat(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), &st);
1025         if (ret == 0) {
1026                 smb_stat_ex_from_stat(sbuf, &st);
1027         }
1028         if (ret < 0) {
1029                 DEBUG(0, ("glfs_fstat(%d) failed: %s\n",
1030                           fsp->fh->fd, strerror(errno)));
1031         }
1032         return ret;
1033 }
1034
1035 static int vfs_gluster_lstat(struct vfs_handle_struct *handle,
1036                              struct smb_filename *smb_fname)
1037 {
1038         struct stat st;
1039         int ret;
1040
1041         ret = glfs_lstat(handle->data, smb_fname->base_name, &st);
1042         if (ret == 0) {
1043                 smb_stat_ex_from_stat(&smb_fname->st, &st);
1044         }
1045         if (ret < 0 && errno != ENOENT) {
1046                 DEBUG(0, ("glfs_lstat(%s) failed: %s\n",
1047                           smb_fname->base_name, strerror(errno)));
1048         }
1049         return ret;
1050 }
1051
1052 static uint64_t vfs_gluster_get_alloc_size(struct vfs_handle_struct *handle,
1053                                            files_struct *fsp,
1054                                            const SMB_STRUCT_STAT *sbuf)
1055 {
1056         return sbuf->st_ex_blocks * 512;
1057 }
1058
1059 static int vfs_gluster_unlink(struct vfs_handle_struct *handle,
1060                               const struct smb_filename *smb_fname)
1061 {
1062         return glfs_unlink(handle->data, smb_fname->base_name);
1063 }
1064
1065 static int vfs_gluster_chmod(struct vfs_handle_struct *handle,
1066                                 const struct smb_filename *smb_fname,
1067                                 mode_t mode)
1068 {
1069         return glfs_chmod(handle->data, smb_fname->base_name, mode);
1070 }
1071
1072 static int vfs_gluster_fchmod(struct vfs_handle_struct *handle,
1073                               files_struct *fsp, mode_t mode)
1074 {
1075         return glfs_fchmod(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), mode);
1076 }
1077
1078 static int vfs_gluster_chown(struct vfs_handle_struct *handle,
1079                         const struct smb_filename *smb_fname,
1080                         uid_t uid,
1081                         gid_t gid)
1082 {
1083         return glfs_chown(handle->data, smb_fname->base_name, uid, gid);
1084 }
1085
1086 static int vfs_gluster_fchown(struct vfs_handle_struct *handle,
1087                               files_struct *fsp, uid_t uid, gid_t gid)
1088 {
1089         return glfs_fchown(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), uid, gid);
1090 }
1091
1092 static int vfs_gluster_lchown(struct vfs_handle_struct *handle,
1093                         const struct smb_filename *smb_fname,
1094                         uid_t uid,
1095                         gid_t gid)
1096 {
1097         return glfs_lchown(handle->data, smb_fname->base_name, uid, gid);
1098 }
1099
1100 static int vfs_gluster_chdir(struct vfs_handle_struct *handle,
1101                         const struct smb_filename *smb_fname)
1102 {
1103         return glfs_chdir(handle->data, smb_fname->base_name);
1104 }
1105
1106 static struct smb_filename *vfs_gluster_getwd(struct vfs_handle_struct *handle,
1107                                 TALLOC_CTX *ctx)
1108 {
1109         char *cwd;
1110         char *ret;
1111         struct smb_filename *smb_fname = NULL;
1112
1113         cwd = SMB_CALLOC_ARRAY(char, PATH_MAX);
1114         if (cwd == NULL) {
1115                 return NULL;
1116         }
1117
1118         ret = glfs_getcwd(handle->data, cwd, PATH_MAX - 1);
1119         if (ret == NULL) {
1120                 SAFE_FREE(cwd);
1121                 return NULL;
1122         }
1123         smb_fname = synthetic_smb_fname(ctx,
1124                                         ret,
1125                                         NULL,
1126                                         NULL,
1127                                         0);
1128         SAFE_FREE(cwd);
1129         return smb_fname;
1130 }
1131
1132 static int vfs_gluster_ntimes(struct vfs_handle_struct *handle,
1133                               const struct smb_filename *smb_fname,
1134                               struct smb_file_time *ft)
1135 {
1136         struct timespec times[2];
1137
1138         if (null_timespec(ft->atime)) {
1139                 times[0].tv_sec = smb_fname->st.st_ex_atime.tv_sec;
1140                 times[0].tv_nsec = smb_fname->st.st_ex_atime.tv_nsec;
1141         } else {
1142                 times[0].tv_sec = ft->atime.tv_sec;
1143                 times[0].tv_nsec = ft->atime.tv_nsec;
1144         }
1145
1146         if (null_timespec(ft->mtime)) {
1147                 times[1].tv_sec = smb_fname->st.st_ex_mtime.tv_sec;
1148                 times[1].tv_nsec = smb_fname->st.st_ex_mtime.tv_nsec;
1149         } else {
1150                 times[1].tv_sec = ft->mtime.tv_sec;
1151                 times[1].tv_nsec = ft->mtime.tv_nsec;
1152         }
1153
1154         if ((timespec_compare(&times[0],
1155                               &smb_fname->st.st_ex_atime) == 0) &&
1156             (timespec_compare(&times[1],
1157                               &smb_fname->st.st_ex_mtime) == 0)) {
1158                 return 0;
1159         }
1160
1161         return glfs_utimens(handle->data, smb_fname->base_name, times);
1162 }
1163
1164 static int vfs_gluster_ftruncate(struct vfs_handle_struct *handle,
1165                                  files_struct *fsp, off_t offset)
1166 {
1167         return glfs_ftruncate(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), offset);
1168 }
1169
1170 static int vfs_gluster_fallocate(struct vfs_handle_struct *handle,
1171                                  struct files_struct *fsp,
1172                                  uint32_t mode,
1173                                  off_t offset, off_t len)
1174 {
1175 #ifdef HAVE_GFAPI_VER_6
1176         int keep_size, punch_hole;
1177
1178         keep_size = mode & VFS_FALLOCATE_FL_KEEP_SIZE;
1179         punch_hole = mode & VFS_FALLOCATE_FL_PUNCH_HOLE;
1180
1181         mode &= ~(VFS_FALLOCATE_FL_KEEP_SIZE|VFS_FALLOCATE_FL_PUNCH_HOLE);
1182         if (mode != 0) {
1183                 errno = ENOTSUP;
1184                 return -1;
1185         }
1186
1187         if (punch_hole) {
1188                 return glfs_discard(*(glfs_fd_t **)
1189                                     VFS_FETCH_FSP_EXTENSION(handle, fsp),
1190                                     offset, len);
1191         }
1192
1193         return glfs_fallocate(*(glfs_fd_t **)
1194                               VFS_FETCH_FSP_EXTENSION(handle, fsp),
1195                               keep_size, offset, len);
1196 #else
1197         errno = ENOTSUP;
1198         return -1;
1199 #endif
1200 }
1201
1202 static struct smb_filename *vfs_gluster_realpath(struct vfs_handle_struct *handle,
1203                                 TALLOC_CTX *ctx,
1204                                 const struct smb_filename *smb_fname)
1205 {
1206         char *result = NULL;
1207         struct smb_filename *result_fname = NULL;
1208         char *resolved_path = SMB_MALLOC_ARRAY(char, PATH_MAX+1);
1209
1210         if (resolved_path == NULL) {
1211                 errno = ENOMEM;
1212                 return NULL;
1213         }
1214
1215         result = glfs_realpath(handle->data,
1216                         smb_fname->base_name,
1217                         resolved_path);
1218         if (result != NULL) {
1219                 result_fname = synthetic_smb_fname(ctx, result, NULL, NULL, 0);
1220         }
1221
1222         SAFE_FREE(resolved_path);
1223         return result_fname;
1224 }
1225
1226 static bool vfs_gluster_lock(struct vfs_handle_struct *handle,
1227                              files_struct *fsp, int op, off_t offset,
1228                              off_t count, int type)
1229 {
1230         struct flock flock = { 0, };
1231         int ret;
1232
1233         flock.l_type = type;
1234         flock.l_whence = SEEK_SET;
1235         flock.l_start = offset;
1236         flock.l_len = count;
1237         flock.l_pid = 0;
1238
1239         ret = glfs_posix_lock(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), op, &flock);
1240
1241         if (op == F_GETLK) {
1242                 /* lock query, true if someone else has locked */
1243                 if ((ret != -1) &&
1244                     (flock.l_type != F_UNLCK) &&
1245                     (flock.l_pid != 0) && (flock.l_pid != getpid()))
1246                         return true;
1247                 /* not me */
1248                 return false;
1249         }
1250
1251         if (ret == -1) {
1252                 return false;
1253         }
1254
1255         return true;
1256 }
1257
1258 static int vfs_gluster_kernel_flock(struct vfs_handle_struct *handle,
1259                                     files_struct *fsp, uint32_t share_mode,
1260                                     uint32_t access_mask)
1261 {
1262         errno = ENOSYS;
1263         return -1;
1264 }
1265
1266 static int vfs_gluster_linux_setlease(struct vfs_handle_struct *handle,
1267                                       files_struct *fsp, int leasetype)
1268 {
1269         errno = ENOSYS;
1270         return -1;
1271 }
1272
1273 static bool vfs_gluster_getlock(struct vfs_handle_struct *handle,
1274                                 files_struct *fsp, off_t *poffset,
1275                                 off_t *pcount, int *ptype, pid_t *ppid)
1276 {
1277         struct flock flock = { 0, };
1278         int ret;
1279
1280         flock.l_type = *ptype;
1281         flock.l_whence = SEEK_SET;
1282         flock.l_start = *poffset;
1283         flock.l_len = *pcount;
1284         flock.l_pid = 0;
1285
1286         ret = glfs_posix_lock(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), F_GETLK, &flock);
1287
1288         if (ret == -1) {
1289                 return false;
1290         }
1291
1292         *ptype = flock.l_type;
1293         *poffset = flock.l_start;
1294         *pcount = flock.l_len;
1295         *ppid = flock.l_pid;
1296
1297         return true;
1298 }
1299
1300 static int vfs_gluster_symlink(struct vfs_handle_struct *handle,
1301                                 const char *link_target,
1302                                 const struct smb_filename *new_smb_fname)
1303 {
1304         return glfs_symlink(handle->data,
1305                         link_target,
1306                         new_smb_fname->base_name);
1307 }
1308
1309 static int vfs_gluster_readlink(struct vfs_handle_struct *handle,
1310                                 const struct smb_filename *smb_fname,
1311                                 char *buf,
1312                                 size_t bufsiz)
1313 {
1314         return glfs_readlink(handle->data, smb_fname->base_name, buf, bufsiz);
1315 }
1316
1317 static int vfs_gluster_link(struct vfs_handle_struct *handle,
1318                                 const struct smb_filename *old_smb_fname,
1319                                 const struct smb_filename *new_smb_fname)
1320 {
1321         return glfs_link(handle->data,
1322                         old_smb_fname->base_name,
1323                         new_smb_fname->base_name);
1324 }
1325
1326 static int vfs_gluster_mknod(struct vfs_handle_struct *handle,
1327                                 const struct smb_filename *smb_fname,
1328                                 mode_t mode,
1329                                 SMB_DEV_T dev)
1330 {
1331         return glfs_mknod(handle->data, smb_fname->base_name, mode, dev);
1332 }
1333
1334 static int vfs_gluster_chflags(struct vfs_handle_struct *handle,
1335                                 const struct smb_filename *smb_fname,
1336                                 unsigned int flags)
1337 {
1338         errno = ENOSYS;
1339         return -1;
1340 }
1341
1342 static int vfs_gluster_get_real_filename(struct vfs_handle_struct *handle,
1343                                          const char *path, const char *name,
1344                                          TALLOC_CTX *mem_ctx, char **found_name)
1345 {
1346         int ret;
1347         char key_buf[NAME_MAX + 64];
1348         char val_buf[NAME_MAX + 1];
1349
1350         if (strlen(name) >= NAME_MAX) {
1351                 errno = ENAMETOOLONG;
1352                 return -1;
1353         }
1354
1355         snprintf(key_buf, NAME_MAX + 64,
1356                  "glusterfs.get_real_filename:%s", name);
1357
1358         ret = glfs_getxattr(handle->data, path, key_buf, val_buf, NAME_MAX + 1);
1359         if (ret == -1) {
1360                 if (errno == ENODATA) {
1361                         errno = EOPNOTSUPP;
1362                 }
1363                 return -1;
1364         }
1365
1366         *found_name = talloc_strdup(mem_ctx, val_buf);
1367         if (found_name[0] == NULL) {
1368                 errno = ENOMEM;
1369                 return -1;
1370         }
1371         return 0;
1372 }
1373
1374 static const char *vfs_gluster_connectpath(struct vfs_handle_struct *handle,
1375                                 const struct smb_filename *smb_fname)
1376 {
1377         return handle->conn->connectpath;
1378 }
1379
1380 /* EA Operations */
1381
1382 static ssize_t vfs_gluster_getxattr(struct vfs_handle_struct *handle,
1383                                 const struct smb_filename *smb_fname,
1384                                 const char *name,
1385                                 void *value,
1386                                 size_t size)
1387 {
1388         return glfs_getxattr(handle->data, smb_fname->base_name,
1389                         name, value, size);
1390 }
1391
1392 static ssize_t vfs_gluster_fgetxattr(struct vfs_handle_struct *handle,
1393                                      files_struct *fsp, const char *name,
1394                                      void *value, size_t size)
1395 {
1396         return glfs_fgetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name, value, size);
1397 }
1398
1399 static ssize_t vfs_gluster_listxattr(struct vfs_handle_struct *handle,
1400                                 const struct smb_filename *smb_fname,
1401                                 char *list,
1402                                 size_t size)
1403 {
1404         return glfs_listxattr(handle->data, smb_fname->base_name, list, size);
1405 }
1406
1407 static ssize_t vfs_gluster_flistxattr(struct vfs_handle_struct *handle,
1408                                       files_struct *fsp, char *list,
1409                                       size_t size)
1410 {
1411         return glfs_flistxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), list, size);
1412 }
1413
1414 static int vfs_gluster_removexattr(struct vfs_handle_struct *handle,
1415                                 const struct smb_filename *smb_fname,
1416                                 const char *name)
1417 {
1418         return glfs_removexattr(handle->data, smb_fname->base_name, name);
1419 }
1420
1421 static int vfs_gluster_fremovexattr(struct vfs_handle_struct *handle,
1422                                     files_struct *fsp, const char *name)
1423 {
1424         return glfs_fremovexattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name);
1425 }
1426
1427 static int vfs_gluster_setxattr(struct vfs_handle_struct *handle,
1428                                 const struct smb_filename *smb_fname,
1429                                 const char *name,
1430                                 const void *value, size_t size, int flags)
1431 {
1432         return glfs_setxattr(handle->data, smb_fname->base_name, name, value, size, flags);
1433 }
1434
1435 static int vfs_gluster_fsetxattr(struct vfs_handle_struct *handle,
1436                                  files_struct *fsp, const char *name,
1437                                  const void *value, size_t size, int flags)
1438 {
1439         return glfs_fsetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name, value, size,
1440                               flags);
1441 }
1442
1443 /* AIO Operations */
1444
1445 static bool vfs_gluster_aio_force(struct vfs_handle_struct *handle,
1446                                   files_struct *fsp)
1447 {
1448         return false;
1449 }
1450
1451 static struct vfs_fn_pointers glusterfs_fns = {
1452
1453         /* Disk Operations */
1454
1455         .connect_fn = vfs_gluster_connect,
1456         .disconnect_fn = vfs_gluster_disconnect,
1457         .disk_free_fn = vfs_gluster_disk_free,
1458         .get_quota_fn = vfs_gluster_get_quota,
1459         .set_quota_fn = vfs_gluster_set_quota,
1460         .statvfs_fn = vfs_gluster_statvfs,
1461         .fs_capabilities_fn = vfs_gluster_fs_capabilities,
1462
1463         .get_dfs_referrals_fn = NULL,
1464
1465         /* Directory Operations */
1466
1467         .opendir_fn = vfs_gluster_opendir,
1468         .fdopendir_fn = vfs_gluster_fdopendir,
1469         .readdir_fn = vfs_gluster_readdir,
1470         .seekdir_fn = vfs_gluster_seekdir,
1471         .telldir_fn = vfs_gluster_telldir,
1472         .rewind_dir_fn = vfs_gluster_rewinddir,
1473         .mkdir_fn = vfs_gluster_mkdir,
1474         .rmdir_fn = vfs_gluster_rmdir,
1475         .closedir_fn = vfs_gluster_closedir,
1476
1477         /* File Operations */
1478
1479         .open_fn = vfs_gluster_open,
1480         .create_file_fn = NULL,
1481         .close_fn = vfs_gluster_close,
1482         .pread_fn = vfs_gluster_pread,
1483         .pread_send_fn = vfs_gluster_pread_send,
1484         .pread_recv_fn = vfs_gluster_recv,
1485         .pwrite_fn = vfs_gluster_pwrite,
1486         .pwrite_send_fn = vfs_gluster_pwrite_send,
1487         .pwrite_recv_fn = vfs_gluster_recv,
1488         .lseek_fn = vfs_gluster_lseek,
1489         .sendfile_fn = vfs_gluster_sendfile,
1490         .recvfile_fn = vfs_gluster_recvfile,
1491         .rename_fn = vfs_gluster_rename,
1492         .fsync_send_fn = vfs_gluster_fsync_send,
1493         .fsync_recv_fn = vfs_gluster_fsync_recv,
1494
1495         .stat_fn = vfs_gluster_stat,
1496         .fstat_fn = vfs_gluster_fstat,
1497         .lstat_fn = vfs_gluster_lstat,
1498         .get_alloc_size_fn = vfs_gluster_get_alloc_size,
1499         .unlink_fn = vfs_gluster_unlink,
1500
1501         .chmod_fn = vfs_gluster_chmod,
1502         .fchmod_fn = vfs_gluster_fchmod,
1503         .chown_fn = vfs_gluster_chown,
1504         .fchown_fn = vfs_gluster_fchown,
1505         .lchown_fn = vfs_gluster_lchown,
1506         .chdir_fn = vfs_gluster_chdir,
1507         .getwd_fn = vfs_gluster_getwd,
1508         .ntimes_fn = vfs_gluster_ntimes,
1509         .ftruncate_fn = vfs_gluster_ftruncate,
1510         .fallocate_fn = vfs_gluster_fallocate,
1511         .lock_fn = vfs_gluster_lock,
1512         .kernel_flock_fn = vfs_gluster_kernel_flock,
1513         .linux_setlease_fn = vfs_gluster_linux_setlease,
1514         .getlock_fn = vfs_gluster_getlock,
1515         .symlink_fn = vfs_gluster_symlink,
1516         .readlink_fn = vfs_gluster_readlink,
1517         .link_fn = vfs_gluster_link,
1518         .mknod_fn = vfs_gluster_mknod,
1519         .realpath_fn = vfs_gluster_realpath,
1520         .chflags_fn = vfs_gluster_chflags,
1521         .file_id_create_fn = NULL,
1522         .streaminfo_fn = NULL,
1523         .get_real_filename_fn = vfs_gluster_get_real_filename,
1524         .connectpath_fn = vfs_gluster_connectpath,
1525
1526         .brl_lock_windows_fn = NULL,
1527         .brl_unlock_windows_fn = NULL,
1528         .brl_cancel_windows_fn = NULL,
1529         .strict_lock_check_fn = NULL,
1530         .translate_name_fn = NULL,
1531         .fsctl_fn = NULL,
1532
1533         /* NT ACL Operations */
1534         .fget_nt_acl_fn = NULL,
1535         .get_nt_acl_fn = NULL,
1536         .fset_nt_acl_fn = NULL,
1537         .audit_file_fn = NULL,
1538
1539         /* Posix ACL Operations */
1540         .sys_acl_get_file_fn = posixacl_xattr_acl_get_file,
1541         .sys_acl_get_fd_fn = posixacl_xattr_acl_get_fd,
1542         .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
1543         .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
1544         .sys_acl_set_file_fn = posixacl_xattr_acl_set_file,
1545         .sys_acl_set_fd_fn = posixacl_xattr_acl_set_fd,
1546         .sys_acl_delete_def_file_fn = posixacl_xattr_acl_delete_def_file,
1547
1548         /* EA Operations */
1549         .getxattr_fn = vfs_gluster_getxattr,
1550         .getxattrat_send_fn = vfs_not_implemented_getxattrat_send,
1551         .getxattrat_recv_fn = vfs_not_implemented_getxattrat_recv,
1552         .fgetxattr_fn = vfs_gluster_fgetxattr,
1553         .listxattr_fn = vfs_gluster_listxattr,
1554         .flistxattr_fn = vfs_gluster_flistxattr,
1555         .removexattr_fn = vfs_gluster_removexattr,
1556         .fremovexattr_fn = vfs_gluster_fremovexattr,
1557         .setxattr_fn = vfs_gluster_setxattr,
1558         .fsetxattr_fn = vfs_gluster_fsetxattr,
1559
1560         /* AIO Operations */
1561         .aio_force_fn = vfs_gluster_aio_force,
1562
1563         /* Durable handle Operations */
1564         .durable_cookie_fn = NULL,
1565         .durable_disconnect_fn = NULL,
1566         .durable_reconnect_fn = NULL,
1567 };
1568
1569 static_decl_vfs;
1570 NTSTATUS vfs_glusterfs_init(TALLOC_CTX *ctx)
1571 {
1572         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1573                                 "glusterfs", &glusterfs_fns);
1574 }