source3/modules/vfs_glusterfs.c

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