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 done:
 366         if (ret < 0) {
 367                 if (fs)
 368                         glfs_fini(fs);
 369         } else {
 370                 DBG_ERR("%s: Initialized volume from servers %s\n",
 371                         volume, volfile_servers);
 372                 handle->data = fs;
 373         }
 374         talloc_free(tmp_ctx);
 375         return ret;
 376 }
 377
 378 static void vfs_gluster_disconnect(struct vfs_handle_struct *handle)
 379 {
 380         glfs_t *fs = NULL;
 381
 382         fs = handle->data;
 383
 384         glfs_clear_preopened(fs);
 385 }
 386
 387 static uint64_t vfs_gluster_disk_free(struct vfs_handle_struct *handle,
 388                                 const struct smb_filename *smb_fname,
 389                                 uint64_t *bsize_p,
 390                                 uint64_t *dfree_p,
 391                                 uint64_t *dsize_p)
 392 {
 393         struct statvfs statvfs = { 0, };
 394         int ret;
 395
 396         ret = glfs_statvfs(handle->data, smb_fname->base_name, &statvfs);
 397         if (ret < 0) {
 398                 return -1;
 399         }
 400
 401         if (bsize_p != NULL) {
 402                 *bsize_p = (uint64_t)statvfs.f_bsize; /* Block size */
 403         }
 404         if (dfree_p != NULL) {
 405                 *dfree_p = (uint64_t)statvfs.f_bavail; /* Available Block units */
 406         }
 407         if (dsize_p != NULL) {
 408                 *dsize_p = (uint64_t)statvfs.f_blocks; /* Total Block units */
 409         }
 410
 411         return (uint64_t)statvfs.f_bavail;
 412 }
 413
 414 static int vfs_gluster_get_quota(struct vfs_handle_struct *handle,
 415                                 const struct smb_filename *smb_fname,
 416                                 enum SMB_QUOTA_TYPE qtype,
 417                                 unid_t id,
 418                                 SMB_DISK_QUOTA *qt)
 419 {
 420         errno = ENOSYS;
 421         return -1;
 422 }
 423
 424 static int
 425 vfs_gluster_set_quota(struct vfs_handle_struct *handle,
 426                       enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
 427 {
 428         errno = ENOSYS;
 429         return -1;
 430 }
 431
 432 static int vfs_gluster_statvfs(struct vfs_handle_struct *handle,
 433                                 const struct smb_filename *smb_fname,
 434                                 struct vfs_statvfs_struct *vfs_statvfs)
 435 {
 436         struct statvfs statvfs = { 0, };
 437         int ret;
 438
 439         ret = glfs_statvfs(handle->data, smb_fname->base_name, &statvfs);
 440         if (ret < 0) {
 441                 DEBUG(0, ("glfs_statvfs(%s) failed: %s\n",
 442                           smb_fname->base_name, strerror(errno)));
 443                 return -1;
 444         }
 445
 446         ZERO_STRUCTP(vfs_statvfs);
 447
 448         vfs_statvfs->OptimalTransferSize = statvfs.f_frsize;
 449         vfs_statvfs->BlockSize = statvfs.f_bsize;
 450         vfs_statvfs->TotalBlocks = statvfs.f_blocks;
 451         vfs_statvfs->BlocksAvail = statvfs.f_bfree;
 452         vfs_statvfs->UserBlocksAvail = statvfs.f_bavail;
 453         vfs_statvfs->TotalFileNodes = statvfs.f_files;
 454         vfs_statvfs->FreeFileNodes = statvfs.f_ffree;
 455         vfs_statvfs->FsIdentifier = statvfs.f_fsid;
 456         vfs_statvfs->FsCapabilities =
 457             FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
 458
 459         return ret;
 460 }
 461
 462 static uint32_t vfs_gluster_fs_capabilities(struct vfs_handle_struct *handle,
 463                                             enum timestamp_set_resolution *p_ts_res)
 464 {
 465         uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
 466
 467 #ifdef STAT_HAVE_NSEC
 468         *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
 469 #endif
 470
 471         return caps;
 472 }
 473
 474 static DIR *vfs_gluster_opendir(struct vfs_handle_struct *handle,
 475                                 const struct smb_filename *smb_fname,
 476                                 const char *mask,
 477                                 uint32_t attributes)
 478 {
 479         glfs_fd_t *fd;
 480
 481         fd = glfs_opendir(handle->data, smb_fname->base_name);
 482         if (fd == NULL) {
 483                 DEBUG(0, ("glfs_opendir(%s) failed: %s\n",
 484                           smb_fname->base_name, strerror(errno)));
 485         }
 486
 487         return (DIR *) fd;
 488 }
 489
 490 static DIR *vfs_gluster_fdopendir(struct vfs_handle_struct *handle,
 491                                   files_struct *fsp, const char *mask,
 492                                   uint32_t attributes)
 493 {
 494         return (DIR *) *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
 495 }
 496
 497 static int vfs_gluster_closedir(struct vfs_handle_struct *handle, DIR *dirp)
 498 {
 499         return glfs_closedir((void *)dirp);
 500 }
 501
 502 static struct dirent *vfs_gluster_readdir(struct vfs_handle_struct *handle,
 503                                           DIR *dirp, SMB_STRUCT_STAT *sbuf)
 504 {
 505         static char direntbuf[512];
 506         int ret;
 507         struct stat stat;
 508         struct dirent *dirent = 0;
 509
 510         if (sbuf != NULL) {
 511                 ret = glfs_readdirplus_r((void *)dirp, &stat, (void *)direntbuf,
 512                                          &dirent);
 513         } else {
 514                 ret = glfs_readdir_r((void *)dirp, (void *)direntbuf, &dirent);
 515         }
 516
 517         if ((ret < 0) || (dirent == NULL)) {
 518                 return NULL;
 519         }
 520
 521         if (sbuf != NULL) {
 522                 smb_stat_ex_from_stat(sbuf, &stat);
 523         }
 524
 525         return dirent;
 526 }
 527
 528 static long vfs_gluster_telldir(struct vfs_handle_struct *handle, DIR *dirp)
 529 {
 530         return glfs_telldir((void *)dirp);
 531 }
 532
 533 static void vfs_gluster_seekdir(struct vfs_handle_struct *handle, DIR *dirp,
 534                                 long offset)
 535 {
 536         glfs_seekdir((void *)dirp, offset);
 537 }
 538
 539 static void vfs_gluster_rewinddir(struct vfs_handle_struct *handle, DIR *dirp)
 540 {
 541         glfs_seekdir((void *)dirp, 0);
 542 }
 543
 544 static int vfs_gluster_mkdir(struct vfs_handle_struct *handle,
 545                              const struct smb_filename *smb_fname,
 546                              mode_t mode)
 547 {
 548         return glfs_mkdir(handle->data, smb_fname->base_name, mode);
 549 }
 550
 551 static int vfs_gluster_rmdir(struct vfs_handle_struct *handle,
 552                         const struct smb_filename *smb_fname)
 553 {
 554         return glfs_rmdir(handle->data, smb_fname->base_name);
 555 }
 556
 557 static int vfs_gluster_open(struct vfs_handle_struct *handle,
 558                             struct smb_filename *smb_fname, files_struct *fsp,
 559                             int flags, mode_t mode)
 560 {
 561         glfs_fd_t *glfd;
 562         glfs_fd_t **p_tmp;
 563
 564         if (flags & O_DIRECTORY) {
 565                 glfd = glfs_opendir(handle->data, smb_fname->base_name);
 566         } else if (flags & O_CREAT) {
 567                 glfd = glfs_creat(handle->data, smb_fname->base_name, flags,
 568                                   mode);
 569         } else {
 570                 glfd = glfs_open(handle->data, smb_fname->base_name, flags);
 571         }
 572
 573         if (glfd == NULL) {
 574                 return -1;
 575         }
 576         p_tmp = VFS_ADD_FSP_EXTENSION(handle, fsp, glfs_fd_t *, NULL);
 577         *p_tmp = glfd;
 578         /* An arbitrary value for error reporting, so you know its us. */
 579         return 13371337;
 580 }
 581
 582 static int vfs_gluster_close(struct vfs_handle_struct *handle,
 583                              files_struct *fsp)
 584 {
 585         glfs_fd_t *glfd;
 586         glfd = *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
 587         VFS_REMOVE_FSP_EXTENSION(handle, fsp);
 588         return glfs_close(glfd);
 589 }
 590
 591 static ssize_t vfs_gluster_read(struct vfs_handle_struct *handle,
 592                                 files_struct *fsp, void *data, size_t n)
 593 {
 594         return glfs_read(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, 0);
 595 }
 596
 597 static ssize_t vfs_gluster_pread(struct vfs_handle_struct *handle,
 598                                  files_struct *fsp, void *data, size_t n,
 599                                  off_t offset)
 600 {
 601         return glfs_pread(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, offset, 0);
 602 }
 603
 604 struct glusterfs_aio_state;
 605
 606 struct glusterfs_aio_wrapper {
 607         struct glusterfs_aio_state *state;
 608 };
 609
 610 struct glusterfs_aio_state {
 611         ssize_t ret;
 612         struct tevent_req *req;
 613         bool cancelled;
 614         struct vfs_aio_state vfs_aio_state;
 615         struct timespec start;
 616 };
 617
 618 static int aio_wrapper_destructor(struct glusterfs_aio_wrapper *wrap)
 619 {
 620         if (wrap->state != NULL) {
 621                 wrap->state->cancelled = true;
 622         }
 623
 624         return 0;
 625 }
 626
 627 /*
 628  * This function is the callback that will be called on glusterfs
 629  * threads once the async IO submitted is complete. To notify
 630  * Samba of the completion we use a pipe based queue.
 631  */
 632 static void aio_glusterfs_done(glfs_fd_t *fd, ssize_t ret, void *data)
 633 {
 634         struct glusterfs_aio_state *state = NULL;
 635         int sts = 0;
 636         struct timespec end;
 637
 638         state = (struct glusterfs_aio_state *)data;
 639
 640         PROFILE_TIMESTAMP(&end);
 641
 642         if (ret < 0) {
 643                 state->ret = -1;
 644                 state->vfs_aio_state.error = errno;
 645         } else {
 646                 state->ret = ret;
 647         }
 648         state->vfs_aio_state.duration = nsec_time_diff(&end, &state->start);
 649
 650         /*
 651          * Write the state pointer to glusterfs_aio_state to the
 652          * pipe, so we can call tevent_req_done() from the main thread,
 653          * because tevent_req_done() is not designed to be executed in
 654          * the multithread environment, so tevent_req_done() must be
 655          * executed from the smbd main thread.
 656          *
 657          * write(2) on pipes with sizes under _POSIX_PIPE_BUF
 658          * in size is atomic, without this, the use op pipes in this
 659          * code would not work.
 660          *
 661          * sys_write is a thin enough wrapper around write(2)
 662          * that we can trust it here.
 663          */
 664
 665         sts = sys_write(write_fd, &state, sizeof(struct glusterfs_aio_state *));
 666         if (sts < 0) {
 667                 DEBUG(0,("\nWrite to pipe failed (%s)", strerror(errno)));
 668         }
 669
 670         return;
 671 }
 672
 673 /*
 674  * Read each req off the pipe and process it.
 675  */
 676 static void aio_tevent_fd_done(struct tevent_context *event_ctx,
 677                                 struct tevent_fd *fde,
 678                                 uint16_t flags, void *data)
 679 {
 680         struct tevent_req *req = NULL;
 681         struct glusterfs_aio_state *state = NULL;
 682         int sts = 0;
 683
 684         /*
 685          * read(2) on pipes is atomic if the needed data is available
 686          * in the pipe, per SUS and POSIX.  Because we always write
 687          * to the pipe in sizeof(struct tevent_req *) chunks, we can
 688          * always read in those chunks, atomically.
 689          *
 690          * sys_read is a thin enough wrapper around read(2) that we
 691          * can trust it here.
 692          */
 693
 694         sts = sys_read(read_fd, &state, sizeof(struct glusterfs_aio_state *));
 695
 696         if (sts < 0) {
 697                 DEBUG(0,("\nRead from pipe failed (%s)", strerror(errno)));
 698         }
 699
 700         /* if we've cancelled the op, there is no req, so just clean up. */
 701         if (state->cancelled == true) {
 702                 TALLOC_FREE(state);
 703                 return;
 704         }
 705
 706         req = state->req;
 707
 708         if (req) {
 709                 tevent_req_done(req);
 710         }
 711         return;
 712 }
 713
 714 static bool init_gluster_aio(struct vfs_handle_struct *handle)
 715 {
 716         int fds[2];
 717         int ret = -1;
 718
 719         if (read_fd != -1) {
 720                 /*
 721                  * Already initialized.
 722                  */
 723                 return true;
 724         }
 725
 726         ret = pipe(fds);
 727         if (ret == -1) {
 728                 goto fail;
 729         }
 730
 731         read_fd = fds[0];
 732         write_fd = fds[1];
 733
 734         aio_read_event = tevent_add_fd(handle->conn->sconn->ev_ctx,
 735                                         NULL,
 736                                         read_fd,
 737                                         TEVENT_FD_READ,
 738                                         aio_tevent_fd_done,
 739                                         NULL);
 740         if (aio_read_event == NULL) {
 741                 goto fail;
 742         }
 743
 744         return true;
 745 fail:
 746         TALLOC_FREE(aio_read_event);
 747         if (read_fd != -1) {
 748                 close(read_fd);
 749                 close(write_fd);
 750                 read_fd = -1;
 751                 write_fd = -1;
 752         }
 753         return false;
 754 }
 755
 756 static struct glusterfs_aio_state *aio_state_create(TALLOC_CTX *mem_ctx)
 757 {
 758         struct tevent_req *req = NULL;
 759         struct glusterfs_aio_state *state = NULL;
 760         struct glusterfs_aio_wrapper *wrapper = NULL;
 761
 762         req = tevent_req_create(mem_ctx, &wrapper, struct glusterfs_aio_wrapper);
 763
 764         if (req == NULL) {
 765                 return NULL;
 766         }
 767
 768         state = talloc_zero(NULL, struct glusterfs_aio_state);
 769
 770         if (state == NULL) {
 771                 TALLOC_FREE(req);
 772                 return NULL;
 773         }
 774
 775         talloc_set_destructor(wrapper, aio_wrapper_destructor);
 776         state->cancelled = false;
 777         state->req = req;
 778
 779         wrapper->state = state;
 780
 781         return state;
 782 }
 783
 784 static struct tevent_req *vfs_gluster_pread_send(struct vfs_handle_struct
 785                                                   *handle, TALLOC_CTX *mem_ctx,
 786                                                   struct tevent_context *ev,
 787                                                   files_struct *fsp,
 788                                                   void *data, size_t n,
 789                                                   off_t offset)
 790 {
 791         struct glusterfs_aio_state *state = NULL;
 792         struct tevent_req *req = NULL;
 793         int ret = 0;
 794
 795         state = aio_state_create(mem_ctx);
 796
 797         if (state == NULL) {
 798                 return NULL;
 799         }
 800
 801         req = state->req;
 802
 803         if (!init_gluster_aio(handle)) {
 804                 tevent_req_error(req, EIO);
 805                 return tevent_req_post(req, ev);
 806         }
 807
 808         PROFILE_TIMESTAMP(&state->start);
 809         ret = glfs_pread_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
 810                                 fsp), data, n, offset, 0, aio_glusterfs_done,
 811                                 state);
 812         if (ret < 0) {
 813                 tevent_req_error(req, -ret);
 814                 return tevent_req_post(req, ev);
 815         }
 816
 817         return req;
 818 }
 819
 820 static struct tevent_req *vfs_gluster_pwrite_send(struct vfs_handle_struct
 821                                                   *handle, TALLOC_CTX *mem_ctx,
 822                                                   struct tevent_context *ev,
 823                                                   files_struct *fsp,
 824                                                   const void *data, size_t n,
 825                                                   off_t offset)
 826 {
 827         struct glusterfs_aio_state *state = NULL;
 828         struct tevent_req *req = NULL;
 829         int ret = 0;
 830
 831         state = aio_state_create(mem_ctx);
 832
 833         if (state == NULL) {
 834                 return NULL;
 835         }
 836
 837         req = state->req;
 838
 839         if (!init_gluster_aio(handle)) {
 840                 tevent_req_error(req, EIO);
 841                 return tevent_req_post(req, ev);
 842         }
 843
 844         PROFILE_TIMESTAMP(&state->start);
 845         ret = glfs_pwrite_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
 846                                 fsp), data, n, offset, 0, aio_glusterfs_done,
 847                                 state);
 848         if (ret < 0) {
 849                 tevent_req_error(req, -ret);
 850                 return tevent_req_post(req, ev);
 851         }
 852
 853         return req;
 854 }
 855
 856 static ssize_t vfs_gluster_recv(struct tevent_req *req,
 857                                 struct vfs_aio_state *vfs_aio_state)
 858 {
 859         struct glusterfs_aio_wrapper *wrapper = NULL;
 860         int ret = 0;
 861
 862         wrapper = tevent_req_data(req, struct glusterfs_aio_wrapper);
 863
 864         if (wrapper == NULL) {
 865                 return -1;
 866         }
 867
 868         if (wrapper->state == NULL) {
 869                 return -1;
 870         }
 871
 872         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
 873                 return -1;
 874         }
 875
 876         *vfs_aio_state = wrapper->state->vfs_aio_state;
 877         ret = wrapper->state->ret;
 878
 879         /* Clean up the state, it is in a NULL context. */
 880
 881         TALLOC_FREE(wrapper->state);
 882
 883         return ret;
 884 }
 885
 886 static ssize_t vfs_gluster_write(struct vfs_handle_struct *handle,
 887                                  files_struct *fsp, const void *data, size_t n)
 888 {
 889         return glfs_write(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, 0);
 890 }
 891
 892 static ssize_t vfs_gluster_pwrite(struct vfs_handle_struct *handle,
 893                                   files_struct *fsp, const void *data,
 894                                   size_t n, off_t offset)
 895 {
 896         return glfs_pwrite(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, offset, 0);
 897 }
 898
 899 static off_t vfs_gluster_lseek(struct vfs_handle_struct *handle,
 900                                files_struct *fsp, off_t offset, int whence)
 901 {
 902         return glfs_lseek(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), offset, whence);
 903 }
 904
 905 static ssize_t vfs_gluster_sendfile(struct vfs_handle_struct *handle, int tofd,
 906                                     files_struct *fromfsp,
 907                                     const DATA_BLOB *hdr,
 908                                     off_t offset, size_t n)
 909 {
 910         errno = ENOTSUP;
 911         return -1;
 912 }
 913
 914 static ssize_t vfs_gluster_recvfile(struct vfs_handle_struct *handle,
 915                                     int fromfd, files_struct *tofsp,
 916                                     off_t offset, size_t n)
 917 {
 918         errno = ENOTSUP;
 919         return -1;
 920 }
 921
 922 static int vfs_gluster_rename(struct vfs_handle_struct *handle,
 923                               const struct smb_filename *smb_fname_src,
 924                               const struct smb_filename *smb_fname_dst)
 925 {
 926         return glfs_rename(handle->data, smb_fname_src->base_name,
 927                            smb_fname_dst->base_name);
 928 }
 929
 930 static int vfs_gluster_fsync(struct vfs_handle_struct *handle,
 931                              files_struct *fsp)
 932 {
 933         return glfs_fsync(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp));
 934 }
 935
 936 static struct tevent_req *vfs_gluster_fsync_send(struct vfs_handle_struct
 937                                                  *handle, TALLOC_CTX *mem_ctx,
 938                                                  struct tevent_context *ev,
 939                                                  files_struct *fsp)
 940 {
 941         struct tevent_req *req = NULL;
 942         struct glusterfs_aio_state *state = NULL;
 943         int ret = 0;
 944
 945         state = aio_state_create(mem_ctx);
 946
 947         if (state == NULL) {
 948                 return NULL;
 949         }
 950
 951         req = state->req;
 952
 953         if (!init_gluster_aio(handle)) {
 954                 tevent_req_error(req, EIO);
 955                 return tevent_req_post(req, ev);
 956         }
 957
 958         PROFILE_TIMESTAMP(&state->start);
 959         ret = glfs_fsync_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
 960                                 fsp), aio_glusterfs_done, req);
 961         if (ret < 0) {
 962                 tevent_req_error(req, -ret);
 963                 return tevent_req_post(req, ev);
 964         }
 965         return req;
 966 }
 967
 968 static int vfs_gluster_fsync_recv(struct tevent_req *req,
 969                                   struct vfs_aio_state *vfs_aio_state)
 970 {
 971         /*
 972          * Use implicit conversion ssize_t->int
 973          */
 974         return vfs_gluster_recv(req, vfs_aio_state);
 975 }
 976
 977 static int vfs_gluster_stat(struct vfs_handle_struct *handle,
 978                             struct smb_filename *smb_fname)
 979 {
 980         struct stat st;
 981         int ret;
 982
 983         ret = glfs_stat(handle->data, smb_fname->base_name, &st);
 984         if (ret == 0) {
 985                 smb_stat_ex_from_stat(&smb_fname->st, &st);
 986         }
 987         if (ret < 0 && errno != ENOENT) {
 988                 DEBUG(0, ("glfs_stat(%s) failed: %s\n",
 989                           smb_fname->base_name, strerror(errno)));
 990         }
 991         return ret;
 992 }
 993
 994 static int vfs_gluster_fstat(struct vfs_handle_struct *handle,
 995                              files_struct *fsp, SMB_STRUCT_STAT *sbuf)
 996 {
 997         struct stat st;
 998         int ret;
 999
1000         ret = glfs_fstat(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), &st);
1001         if (ret == 0) {
1002                 smb_stat_ex_from_stat(sbuf, &st);
1003         }
1004         if (ret < 0) {
1005                 DEBUG(0, ("glfs_fstat(%d) failed: %s\n",
1006                           fsp->fh->fd, strerror(errno)));
1007         }
1008         return ret;
1009 }
1010
1011 static int vfs_gluster_lstat(struct vfs_handle_struct *handle,
1012                              struct smb_filename *smb_fname)
1013 {
1014         struct stat st;
1015         int ret;
1016
1017         ret = glfs_lstat(handle->data, smb_fname->base_name, &st);
1018         if (ret == 0) {
1019                 smb_stat_ex_from_stat(&smb_fname->st, &st);
1020         }
1021         if (ret < 0 && errno != ENOENT) {
1022                 DEBUG(0, ("glfs_lstat(%s) failed: %s\n",
1023                           smb_fname->base_name, strerror(errno)));
1024         }
1025         return ret;
1026 }
1027
1028 static uint64_t vfs_gluster_get_alloc_size(struct vfs_handle_struct *handle,
1029                                            files_struct *fsp,
1030                                            const SMB_STRUCT_STAT *sbuf)
1031 {
1032         return sbuf->st_ex_blocks * 512;
1033 }
1034
1035 static int vfs_gluster_unlink(struct vfs_handle_struct *handle,
1036                               const struct smb_filename *smb_fname)
1037 {
1038         return glfs_unlink(handle->data, smb_fname->base_name);
1039 }
1040
1041 static int vfs_gluster_chmod(struct vfs_handle_struct *handle,
1042                                 const struct smb_filename *smb_fname,
1043                                 mode_t mode)
1044 {
1045         return glfs_chmod(handle->data, smb_fname->base_name, mode);
1046 }
1047
1048 static int vfs_gluster_fchmod(struct vfs_handle_struct *handle,
1049                               files_struct *fsp, mode_t mode)
1050 {
1051         return glfs_fchmod(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), mode);
1052 }
1053
1054 static int vfs_gluster_chown(struct vfs_handle_struct *handle,
1055                         const struct smb_filename *smb_fname,
1056                         uid_t uid,
1057                         gid_t gid)
1058 {
1059         return glfs_chown(handle->data, smb_fname->base_name, uid, gid);
1060 }
1061
1062 static int vfs_gluster_fchown(struct vfs_handle_struct *handle,
1063                               files_struct *fsp, uid_t uid, gid_t gid)
1064 {
1065         return glfs_fchown(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), uid, gid);
1066 }
1067
1068 static int vfs_gluster_lchown(struct vfs_handle_struct *handle,
1069                         const struct smb_filename *smb_fname,
1070                         uid_t uid,
1071                         gid_t gid)
1072 {
1073         return glfs_lchown(handle->data, smb_fname->base_name, uid, gid);
1074 }
1075
1076 static int vfs_gluster_chdir(struct vfs_handle_struct *handle,
1077                         const struct smb_filename *smb_fname)
1078 {
1079         return glfs_chdir(handle->data, smb_fname->base_name);
1080 }
1081
1082 static struct smb_filename *vfs_gluster_getwd(struct vfs_handle_struct *handle,
1083                                 TALLOC_CTX *ctx)
1084 {
1085         char *cwd;
1086         char *ret;
1087         struct smb_filename *smb_fname = NULL;
1088
1089         cwd = SMB_CALLOC_ARRAY(char, PATH_MAX);
1090         if (cwd == NULL) {
1091                 return NULL;
1092         }
1093
1094         ret = glfs_getcwd(handle->data, cwd, PATH_MAX - 1);
1095         if (ret == NULL) {
1096                 SAFE_FREE(cwd);
1097                 return NULL;
1098         }
1099         smb_fname = synthetic_smb_fname(ctx,
1100                                         ret,
1101                                         NULL,
1102                                         NULL,
1103                                         0);
1104         SAFE_FREE(cwd);
1105         return smb_fname;
1106 }
1107
1108 static int vfs_gluster_ntimes(struct vfs_handle_struct *handle,
1109                               const struct smb_filename *smb_fname,
1110                               struct smb_file_time *ft)
1111 {
1112         struct timespec times[2];
1113
1114         if (null_timespec(ft->atime)) {
1115                 times[0].tv_sec = smb_fname->st.st_ex_atime.tv_sec;
1116                 times[0].tv_nsec = smb_fname->st.st_ex_atime.tv_nsec;
1117         } else {
1118                 times[0].tv_sec = ft->atime.tv_sec;
1119                 times[0].tv_nsec = ft->atime.tv_nsec;
1120         }
1121
1122         if (null_timespec(ft->mtime)) {
1123                 times[1].tv_sec = smb_fname->st.st_ex_mtime.tv_sec;
1124                 times[1].tv_nsec = smb_fname->st.st_ex_mtime.tv_nsec;
1125         } else {
1126                 times[1].tv_sec = ft->mtime.tv_sec;
1127                 times[1].tv_nsec = ft->mtime.tv_nsec;
1128         }
1129
1130         if ((timespec_compare(&times[0],
1131                               &smb_fname->st.st_ex_atime) == 0) &&
1132             (timespec_compare(&times[1],
1133                               &smb_fname->st.st_ex_mtime) == 0)) {
1134                 return 0;
1135         }
1136
1137         return glfs_utimens(handle->data, smb_fname->base_name, times);
1138 }
1139
1140 static int vfs_gluster_ftruncate(struct vfs_handle_struct *handle,
1141                                  files_struct *fsp, off_t offset)
1142 {
1143         return glfs_ftruncate(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), offset);
1144 }
1145
1146 static int vfs_gluster_fallocate(struct vfs_handle_struct *handle,
1147                                  struct files_struct *fsp,
1148                                  uint32_t mode,
1149                                  off_t offset, off_t len)
1150 {
1151         /* TODO: add support using glfs_fallocate() and glfs_zerofill() */
1152         errno = ENOTSUP;
1153         return -1;
1154 }
1155
1156 static struct smb_filename *vfs_gluster_realpath(struct vfs_handle_struct *handle,
1157                                 TALLOC_CTX *ctx,
1158                                 const struct smb_filename *smb_fname)
1159 {
1160         char *result = NULL;
1161         struct smb_filename *result_fname = NULL;
1162         char *resolved_path = SMB_MALLOC_ARRAY(char, PATH_MAX+1);
1163
1164         if (resolved_path == NULL) {
1165                 errno = ENOMEM;
1166                 return NULL;
1167         }
1168
1169         result = glfs_realpath(handle->data,
1170                         smb_fname->base_name,
1171                         resolved_path);
1172         if (result != NULL) {
1173                 result_fname = synthetic_smb_fname(ctx, result, NULL, NULL, 0);
1174         }
1175
1176         SAFE_FREE(resolved_path);
1177         return result_fname;
1178 }
1179
1180 static bool vfs_gluster_lock(struct vfs_handle_struct *handle,
1181                              files_struct *fsp, int op, off_t offset,
1182                              off_t count, int type)
1183 {
1184         struct flock flock = { 0, };
1185         int ret;
1186
1187         flock.l_type = type;
1188         flock.l_whence = SEEK_SET;
1189         flock.l_start = offset;
1190         flock.l_len = count;
1191         flock.l_pid = 0;
1192
1193         ret = glfs_posix_lock(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), op, &flock);
1194
1195         if (op == F_GETLK) {
1196                 /* lock query, true if someone else has locked */
1197                 if ((ret != -1) &&
1198                     (flock.l_type != F_UNLCK) &&
1199                     (flock.l_pid != 0) && (flock.l_pid != getpid()))
1200                         return true;
1201                 /* not me */
1202                 return false;
1203         }
1204
1205         if (ret == -1) {
1206                 return false;
1207         }
1208
1209         return true;
1210 }
1211
1212 static int vfs_gluster_kernel_flock(struct vfs_handle_struct *handle,
1213                                     files_struct *fsp, uint32_t share_mode,
1214                                     uint32_t access_mask)
1215 {
1216         errno = ENOSYS;
1217         return -1;
1218 }
1219
1220 static int vfs_gluster_linux_setlease(struct vfs_handle_struct *handle,
1221                                       files_struct *fsp, int leasetype)
1222 {
1223         errno = ENOSYS;
1224         return -1;
1225 }
1226
1227 static bool vfs_gluster_getlock(struct vfs_handle_struct *handle,
1228                                 files_struct *fsp, off_t *poffset,
1229                                 off_t *pcount, int *ptype, pid_t *ppid)
1230 {
1231         struct flock flock = { 0, };
1232         int ret;
1233
1234         flock.l_type = *ptype;
1235         flock.l_whence = SEEK_SET;
1236         flock.l_start = *poffset;
1237         flock.l_len = *pcount;
1238         flock.l_pid = 0;
1239
1240         ret = glfs_posix_lock(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), F_GETLK, &flock);
1241
1242         if (ret == -1) {
1243                 return false;
1244         }
1245
1246         *ptype = flock.l_type;
1247         *poffset = flock.l_start;
1248         *pcount = flock.l_len;
1249         *ppid = flock.l_pid;
1250
1251         return true;
1252 }
1253
1254 static int vfs_gluster_symlink(struct vfs_handle_struct *handle,
1255                                 const char *link_target,
1256                                 const struct smb_filename *new_smb_fname)
1257 {
1258         return glfs_symlink(handle->data,
1259                         link_target,
1260                         new_smb_fname->base_name);
1261 }
1262
1263 static int vfs_gluster_readlink(struct vfs_handle_struct *handle,
1264                                 const struct smb_filename *smb_fname,
1265                                 char *buf,
1266                                 size_t bufsiz)
1267 {
1268         return glfs_readlink(handle->data, smb_fname->base_name, buf, bufsiz);
1269 }
1270
1271 static int vfs_gluster_link(struct vfs_handle_struct *handle,
1272                                 const struct smb_filename *old_smb_fname,
1273                                 const struct smb_filename *new_smb_fname)
1274 {
1275         return glfs_link(handle->data,
1276                         old_smb_fname->base_name,
1277                         new_smb_fname->base_name);
1278 }
1279
1280 static int vfs_gluster_mknod(struct vfs_handle_struct *handle,
1281                                 const struct smb_filename *smb_fname,
1282                                 mode_t mode,
1283                                 SMB_DEV_T dev)
1284 {
1285         return glfs_mknod(handle->data, smb_fname->base_name, mode, dev);
1286 }
1287
1288 static int vfs_gluster_chflags(struct vfs_handle_struct *handle,
1289                                 const struct smb_filename *smb_fname,
1290                                 unsigned int flags)
1291 {
1292         errno = ENOSYS;
1293         return -1;
1294 }
1295
1296 static int vfs_gluster_get_real_filename(struct vfs_handle_struct *handle,
1297                                          const char *path, const char *name,
1298                                          TALLOC_CTX *mem_ctx, char **found_name)
1299 {
1300         int ret;
1301         char key_buf[NAME_MAX + 64];
1302         char val_buf[NAME_MAX + 1];
1303
1304         if (strlen(name) >= NAME_MAX) {
1305                 errno = ENAMETOOLONG;
1306                 return -1;
1307         }
1308
1309         snprintf(key_buf, NAME_MAX + 64,
1310                  "glusterfs.get_real_filename:%s", name);
1311
1312         ret = glfs_getxattr(handle->data, path, key_buf, val_buf, NAME_MAX + 1);
1313         if (ret == -1) {
1314                 if (errno == ENODATA) {
1315                         errno = EOPNOTSUPP;
1316                 }
1317                 return -1;
1318         }
1319
1320         *found_name = talloc_strdup(mem_ctx, val_buf);
1321         if (found_name[0] == NULL) {
1322                 errno = ENOMEM;
1323                 return -1;
1324         }
1325         return 0;
1326 }
1327
1328 static const char *vfs_gluster_connectpath(struct vfs_handle_struct *handle,
1329                                 const struct smb_filename *smb_fname)
1330 {
1331         return handle->conn->connectpath;
1332 }
1333
1334 /* EA Operations */
1335
1336 static ssize_t vfs_gluster_getxattr(struct vfs_handle_struct *handle,
1337                                 const struct smb_filename *smb_fname,
1338                                 const char *name,
1339                                 void *value,
1340                                 size_t size)
1341 {
1342         return glfs_getxattr(handle->data, smb_fname->base_name,
1343                         name, value, size);
1344 }
1345
1346 static ssize_t vfs_gluster_fgetxattr(struct vfs_handle_struct *handle,
1347                                      files_struct *fsp, const char *name,
1348                                      void *value, size_t size)
1349 {
1350         return glfs_fgetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name, value, size);
1351 }
1352
1353 static ssize_t vfs_gluster_listxattr(struct vfs_handle_struct *handle,
1354                                 const struct smb_filename *smb_fname,
1355                                 char *list,
1356                                 size_t size)
1357 {
1358         return glfs_listxattr(handle->data, smb_fname->base_name, list, size);
1359 }
1360
1361 static ssize_t vfs_gluster_flistxattr(struct vfs_handle_struct *handle,
1362                                       files_struct *fsp, char *list,
1363                                       size_t size)
1364 {
1365         return glfs_flistxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), list, size);
1366 }
1367
1368 static int vfs_gluster_removexattr(struct vfs_handle_struct *handle,
1369                                 const struct smb_filename *smb_fname,
1370                                 const char *name)
1371 {
1372         return glfs_removexattr(handle->data, smb_fname->base_name, name);
1373 }
1374
1375 static int vfs_gluster_fremovexattr(struct vfs_handle_struct *handle,
1376                                     files_struct *fsp, const char *name)
1377 {
1378         return glfs_fremovexattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name);
1379 }
1380
1381 static int vfs_gluster_setxattr(struct vfs_handle_struct *handle,
1382                                 const struct smb_filename *smb_fname,
1383                                 const char *name,
1384                                 const void *value, size_t size, int flags)
1385 {
1386         return glfs_setxattr(handle->data, smb_fname->base_name, name, value, size, flags);
1387 }
1388
1389 static int vfs_gluster_fsetxattr(struct vfs_handle_struct *handle,
1390                                  files_struct *fsp, const char *name,
1391                                  const void *value, size_t size, int flags)
1392 {
1393         return glfs_fsetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name, value, size,
1394                               flags);
1395 }
1396
1397 /* AIO Operations */
1398
1399 static bool vfs_gluster_aio_force(struct vfs_handle_struct *handle,
1400                                   files_struct *fsp)
1401 {
1402         return false;
1403 }
1404
1405 static struct vfs_fn_pointers glusterfs_fns = {
1406
1407         /* Disk Operations */
1408
1409         .connect_fn = vfs_gluster_connect,
1410         .disconnect_fn = vfs_gluster_disconnect,
1411         .disk_free_fn = vfs_gluster_disk_free,
1412         .get_quota_fn = vfs_gluster_get_quota,
1413         .set_quota_fn = vfs_gluster_set_quota,
1414         .statvfs_fn = vfs_gluster_statvfs,
1415         .fs_capabilities_fn = vfs_gluster_fs_capabilities,
1416
1417         .get_dfs_referrals_fn = NULL,
1418
1419         /* Directory Operations */
1420
1421         .opendir_fn = vfs_gluster_opendir,
1422         .fdopendir_fn = vfs_gluster_fdopendir,
1423         .readdir_fn = vfs_gluster_readdir,
1424         .seekdir_fn = vfs_gluster_seekdir,
1425         .telldir_fn = vfs_gluster_telldir,
1426         .rewind_dir_fn = vfs_gluster_rewinddir,
1427         .mkdir_fn = vfs_gluster_mkdir,
1428         .rmdir_fn = vfs_gluster_rmdir,
1429         .closedir_fn = vfs_gluster_closedir,
1430
1431         /* File Operations */
1432
1433         .open_fn = vfs_gluster_open,
1434         .create_file_fn = NULL,
1435         .close_fn = vfs_gluster_close,
1436         .read_fn = vfs_gluster_read,
1437         .pread_fn = vfs_gluster_pread,
1438         .pread_send_fn = vfs_gluster_pread_send,
1439         .pread_recv_fn = vfs_gluster_recv,
1440         .write_fn = vfs_gluster_write,
1441         .pwrite_fn = vfs_gluster_pwrite,
1442         .pwrite_send_fn = vfs_gluster_pwrite_send,
1443         .pwrite_recv_fn = vfs_gluster_recv,
1444         .lseek_fn = vfs_gluster_lseek,
1445         .sendfile_fn = vfs_gluster_sendfile,
1446         .recvfile_fn = vfs_gluster_recvfile,
1447         .rename_fn = vfs_gluster_rename,
1448         .fsync_fn = vfs_gluster_fsync,
1449         .fsync_send_fn = vfs_gluster_fsync_send,
1450         .fsync_recv_fn = vfs_gluster_fsync_recv,
1451
1452         .stat_fn = vfs_gluster_stat,
1453         .fstat_fn = vfs_gluster_fstat,
1454         .lstat_fn = vfs_gluster_lstat,
1455         .get_alloc_size_fn = vfs_gluster_get_alloc_size,
1456         .unlink_fn = vfs_gluster_unlink,
1457
1458         .chmod_fn = vfs_gluster_chmod,
1459         .fchmod_fn = vfs_gluster_fchmod,
1460         .chown_fn = vfs_gluster_chown,
1461         .fchown_fn = vfs_gluster_fchown,
1462         .lchown_fn = vfs_gluster_lchown,
1463         .chdir_fn = vfs_gluster_chdir,
1464         .getwd_fn = vfs_gluster_getwd,
1465         .ntimes_fn = vfs_gluster_ntimes,
1466         .ftruncate_fn = vfs_gluster_ftruncate,
1467         .fallocate_fn = vfs_gluster_fallocate,
1468         .lock_fn = vfs_gluster_lock,
1469         .kernel_flock_fn = vfs_gluster_kernel_flock,
1470         .linux_setlease_fn = vfs_gluster_linux_setlease,
1471         .getlock_fn = vfs_gluster_getlock,
1472         .symlink_fn = vfs_gluster_symlink,
1473         .readlink_fn = vfs_gluster_readlink,
1474         .link_fn = vfs_gluster_link,
1475         .mknod_fn = vfs_gluster_mknod,
1476         .realpath_fn = vfs_gluster_realpath,
1477         .chflags_fn = vfs_gluster_chflags,
1478         .file_id_create_fn = NULL,
1479         .streaminfo_fn = NULL,
1480         .get_real_filename_fn = vfs_gluster_get_real_filename,
1481         .connectpath_fn = vfs_gluster_connectpath,
1482
1483         .brl_lock_windows_fn = NULL,
1484         .brl_unlock_windows_fn = NULL,
1485         .brl_cancel_windows_fn = NULL,
1486         .strict_lock_check_fn = NULL,
1487         .translate_name_fn = NULL,
1488         .fsctl_fn = NULL,
1489
1490         /* NT ACL Operations */
1491         .fget_nt_acl_fn = NULL,
1492         .get_nt_acl_fn = NULL,
1493         .fset_nt_acl_fn = NULL,
1494         .audit_file_fn = NULL,
1495
1496         /* Posix ACL Operations */
1497         .chmod_acl_fn = NULL,   /* passthrough to default */
1498         .fchmod_acl_fn = NULL,  /* passthrough to default */
1499         .sys_acl_get_file_fn = posixacl_xattr_acl_get_file,
1500         .sys_acl_get_fd_fn = posixacl_xattr_acl_get_fd,
1501         .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
1502         .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
1503         .sys_acl_set_file_fn = posixacl_xattr_acl_set_file,
1504         .sys_acl_set_fd_fn = posixacl_xattr_acl_set_fd,
1505         .sys_acl_delete_def_file_fn = posixacl_xattr_acl_delete_def_file,
1506
1507         /* EA Operations */
1508         .getxattr_fn = vfs_gluster_getxattr,
1509         .fgetxattr_fn = vfs_gluster_fgetxattr,
1510         .listxattr_fn = vfs_gluster_listxattr,
1511         .flistxattr_fn = vfs_gluster_flistxattr,
1512         .removexattr_fn = vfs_gluster_removexattr,
1513         .fremovexattr_fn = vfs_gluster_fremovexattr,
1514         .setxattr_fn = vfs_gluster_setxattr,
1515         .fsetxattr_fn = vfs_gluster_fsetxattr,
1516
1517         /* AIO Operations */
1518         .aio_force_fn = vfs_gluster_aio_force,
1519
1520         /* Durable handle Operations */
1521         .durable_cookie_fn = NULL,
1522         .durable_disconnect_fn = NULL,
1523         .durable_reconnect_fn = NULL,
1524 };
1525
1526 NTSTATUS vfs_glusterfs_init(TALLOC_CTX *);
1527 NTSTATUS vfs_glusterfs_init(TALLOC_CTX *ctx)
1528 {
1529         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1530                                 "glusterfs", &glusterfs_fns);
1531 }