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 HAVE_GFAPI_VER_6
 468         caps |= FILE_SUPPORTS_SPARSE_FILES;
 469 #endif
 470
 471 #ifdef STAT_HAVE_NSEC
 472         *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
 473 #endif
 474
 475         return caps;
 476 }
 477
 478 static DIR *vfs_gluster_opendir(struct vfs_handle_struct *handle,
 479                                 const struct smb_filename *smb_fname,
 480                                 const char *mask,
 481                                 uint32_t attributes)
 482 {
 483         glfs_fd_t *fd;
 484
 485         fd = glfs_opendir(handle->data, smb_fname->base_name);
 486         if (fd == NULL) {
 487                 DEBUG(0, ("glfs_opendir(%s) failed: %s\n",
 488                           smb_fname->base_name, strerror(errno)));
 489         }
 490
 491         return (DIR *) fd;
 492 }
 493
 494 static DIR *vfs_gluster_fdopendir(struct vfs_handle_struct *handle,
 495                                   files_struct *fsp, const char *mask,
 496                                   uint32_t attributes)
 497 {
 498         return (DIR *) *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
 499 }
 500
 501 static int vfs_gluster_closedir(struct vfs_handle_struct *handle, DIR *dirp)
 502 {
 503         return glfs_closedir((void *)dirp);
 504 }
 505
 506 static struct dirent *vfs_gluster_readdir(struct vfs_handle_struct *handle,
 507                                           DIR *dirp, SMB_STRUCT_STAT *sbuf)
 508 {
 509         static char direntbuf[512];
 510         int ret;
 511         struct stat stat;
 512         struct dirent *dirent = 0;
 513
 514         if (sbuf != NULL) {
 515                 ret = glfs_readdirplus_r((void *)dirp, &stat, (void *)direntbuf,
 516                                          &dirent);
 517         } else {
 518                 ret = glfs_readdir_r((void *)dirp, (void *)direntbuf, &dirent);
 519         }
 520
 521         if ((ret < 0) || (dirent == NULL)) {
 522                 return NULL;
 523         }
 524
 525         if (sbuf != NULL) {
 526                 smb_stat_ex_from_stat(sbuf, &stat);
 527         }
 528
 529         return dirent;
 530 }
 531
 532 static long vfs_gluster_telldir(struct vfs_handle_struct *handle, DIR *dirp)
 533 {
 534         return glfs_telldir((void *)dirp);
 535 }
 536
 537 static void vfs_gluster_seekdir(struct vfs_handle_struct *handle, DIR *dirp,
 538                                 long offset)
 539 {
 540         glfs_seekdir((void *)dirp, offset);
 541 }
 542
 543 static void vfs_gluster_rewinddir(struct vfs_handle_struct *handle, DIR *dirp)
 544 {
 545         glfs_seekdir((void *)dirp, 0);
 546 }
 547
 548 static int vfs_gluster_mkdir(struct vfs_handle_struct *handle,
 549                              const struct smb_filename *smb_fname,
 550                              mode_t mode)
 551 {
 552         return glfs_mkdir(handle->data, smb_fname->base_name, mode);
 553 }
 554
 555 static int vfs_gluster_rmdir(struct vfs_handle_struct *handle,
 556                         const struct smb_filename *smb_fname)
 557 {
 558         return glfs_rmdir(handle->data, smb_fname->base_name);
 559 }
 560
 561 static int vfs_gluster_open(struct vfs_handle_struct *handle,
 562                             struct smb_filename *smb_fname, files_struct *fsp,
 563                             int flags, mode_t mode)
 564 {
 565         glfs_fd_t *glfd;
 566         glfs_fd_t **p_tmp;
 567
 568         if (flags & O_DIRECTORY) {
 569                 glfd = glfs_opendir(handle->data, smb_fname->base_name);
 570         } else if (flags & O_CREAT) {
 571                 glfd = glfs_creat(handle->data, smb_fname->base_name, flags,
 572                                   mode);
 573         } else {
 574                 glfd = glfs_open(handle->data, smb_fname->base_name, flags);
 575         }
 576
 577         if (glfd == NULL) {
 578                 return -1;
 579         }
 580         p_tmp = VFS_ADD_FSP_EXTENSION(handle, fsp, glfs_fd_t *, NULL);
 581         *p_tmp = glfd;
 582         /* An arbitrary value for error reporting, so you know its us. */
 583         return 13371337;
 584 }
 585
 586 static int vfs_gluster_close(struct vfs_handle_struct *handle,
 587                              files_struct *fsp)
 588 {
 589         glfs_fd_t *glfd;
 590         glfd = *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
 591         VFS_REMOVE_FSP_EXTENSION(handle, fsp);
 592         return glfs_close(glfd);
 593 }
 594
 595 static ssize_t vfs_gluster_pread(struct vfs_handle_struct *handle,
 596                                  files_struct *fsp, void *data, size_t n,
 597                                  off_t offset)
 598 {
 599         return glfs_pread(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, offset, 0);
 600 }
 601
 602 struct glusterfs_aio_state;
 603
 604 struct glusterfs_aio_wrapper {
 605         struct glusterfs_aio_state *state;
 606 };
 607
 608 struct glusterfs_aio_state {
 609         ssize_t ret;
 610         struct tevent_req *req;
 611         bool cancelled;
 612         struct vfs_aio_state vfs_aio_state;
 613         struct timespec start;
 614 };
 615
 616 static int aio_wrapper_destructor(struct glusterfs_aio_wrapper *wrap)
 617 {
 618         if (wrap->state != NULL) {
 619                 wrap->state->cancelled = true;
 620         }
 621
 622         return 0;
 623 }
 624
 625 /*
 626  * This function is the callback that will be called on glusterfs
 627  * threads once the async IO submitted is complete. To notify
 628  * Samba of the completion we use a pipe based queue.
 629  */
 630 static void aio_glusterfs_done(glfs_fd_t *fd, ssize_t ret, void *data)
 631 {
 632         struct glusterfs_aio_state *state = NULL;
 633         int sts = 0;
 634         struct timespec end;
 635
 636         state = (struct glusterfs_aio_state *)data;
 637
 638         PROFILE_TIMESTAMP(&end);
 639
 640         if (ret < 0) {
 641                 state->ret = -1;
 642                 state->vfs_aio_state.error = errno;
 643         } else {
 644                 state->ret = ret;
 645         }
 646         state->vfs_aio_state.duration = nsec_time_diff(&end, &state->start);
 647
 648         /*
 649          * Write the state pointer to glusterfs_aio_state to the
 650          * pipe, so we can call tevent_req_done() from the main thread,
 651          * because tevent_req_done() is not designed to be executed in
 652          * the multithread environment, so tevent_req_done() must be
 653          * executed from the smbd main thread.
 654          *
 655          * write(2) on pipes with sizes under _POSIX_PIPE_BUF
 656          * in size is atomic, without this, the use op pipes in this
 657          * code would not work.
 658          *
 659          * sys_write is a thin enough wrapper around write(2)
 660          * that we can trust it here.
 661          */
 662
 663         sts = sys_write(write_fd, &state, sizeof(struct glusterfs_aio_state *));
 664         if (sts < 0) {
 665                 DEBUG(0,("\nWrite to pipe failed (%s)", strerror(errno)));
 666         }
 667
 668         return;
 669 }
 670
 671 /*
 672  * Read each req off the pipe and process it.
 673  */
 674 static void aio_tevent_fd_done(struct tevent_context *event_ctx,
 675                                 struct tevent_fd *fde,
 676                                 uint16_t flags, void *data)
 677 {
 678         struct tevent_req *req = NULL;
 679         struct glusterfs_aio_state *state = NULL;
 680         int sts = 0;
 681
 682         /*
 683          * read(2) on pipes is atomic if the needed data is available
 684          * in the pipe, per SUS and POSIX.  Because we always write
 685          * to the pipe in sizeof(struct tevent_req *) chunks, we can
 686          * always read in those chunks, atomically.
 687          *
 688          * sys_read is a thin enough wrapper around read(2) that we
 689          * can trust it here.
 690          */
 691
 692         sts = sys_read(read_fd, &state, sizeof(struct glusterfs_aio_state *));
 693
 694         if (sts < 0) {
 695                 DEBUG(0,("\nRead from pipe failed (%s)", strerror(errno)));
 696         }
 697
 698         /* if we've cancelled the op, there is no req, so just clean up. */
 699         if (state->cancelled == true) {
 700                 TALLOC_FREE(state);
 701                 return;
 702         }
 703
 704         req = state->req;
 705
 706         if (req) {
 707                 tevent_req_done(req);
 708         }
 709         return;
 710 }
 711
 712 static bool init_gluster_aio(struct vfs_handle_struct *handle)
 713 {
 714         int fds[2];
 715         int ret = -1;
 716
 717         if (read_fd != -1) {
 718                 /*
 719                  * Already initialized.
 720                  */
 721                 return true;
 722         }
 723
 724         ret = pipe(fds);
 725         if (ret == -1) {
 726                 goto fail;
 727         }
 728
 729         read_fd = fds[0];
 730         write_fd = fds[1];
 731
 732         aio_read_event = tevent_add_fd(handle->conn->sconn->ev_ctx,
 733                                         NULL,
 734                                         read_fd,
 735                                         TEVENT_FD_READ,
 736                                         aio_tevent_fd_done,
 737                                         NULL);
 738         if (aio_read_event == NULL) {
 739                 goto fail;
 740         }
 741
 742         return true;
 743 fail:
 744         TALLOC_FREE(aio_read_event);
 745         if (read_fd != -1) {
 746                 close(read_fd);
 747                 close(write_fd);
 748                 read_fd = -1;
 749                 write_fd = -1;
 750         }
 751         return false;
 752 }
 753
 754 static struct glusterfs_aio_state *aio_state_create(TALLOC_CTX *mem_ctx)
 755 {
 756         struct tevent_req *req = NULL;
 757         struct glusterfs_aio_state *state = NULL;
 758         struct glusterfs_aio_wrapper *wrapper = NULL;
 759
 760         req = tevent_req_create(mem_ctx, &wrapper, struct glusterfs_aio_wrapper);
 761
 762         if (req == NULL) {
 763                 return NULL;
 764         }
 765
 766         state = talloc_zero(NULL, struct glusterfs_aio_state);
 767
 768         if (state == NULL) {
 769                 TALLOC_FREE(req);
 770                 return NULL;
 771         }
 772
 773         talloc_set_destructor(wrapper, aio_wrapper_destructor);
 774         state->cancelled = false;
 775         state->req = req;
 776
 777         wrapper->state = state;
 778
 779         return state;
 780 }
 781
 782 static struct tevent_req *vfs_gluster_pread_send(struct vfs_handle_struct
 783                                                   *handle, TALLOC_CTX *mem_ctx,
 784                                                   struct tevent_context *ev,
 785                                                   files_struct *fsp,
 786                                                   void *data, size_t n,
 787                                                   off_t offset)
 788 {
 789         struct glusterfs_aio_state *state = NULL;
 790         struct tevent_req *req = NULL;
 791         int ret = 0;
 792
 793         state = aio_state_create(mem_ctx);
 794
 795         if (state == NULL) {
 796                 return NULL;
 797         }
 798
 799         req = state->req;
 800
 801         if (!init_gluster_aio(handle)) {
 802                 tevent_req_error(req, EIO);
 803                 return tevent_req_post(req, ev);
 804         }
 805
 806         /*
 807          * aio_glusterfs_done and aio_tevent_fd_done()
 808          * use the raw tevent context. We need to use
 809          * tevent_req_defer_callback() in order to
 810          * use the event context we're started with.
 811          */
 812         tevent_req_defer_callback(req, ev);
 813
 814         PROFILE_TIMESTAMP(&state->start);
 815         ret = glfs_pread_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
 816                                 fsp), data, n, offset, 0, aio_glusterfs_done,
 817                                 state);
 818         if (ret < 0) {
 819                 tevent_req_error(req, -ret);
 820                 return tevent_req_post(req, ev);
 821         }
 822
 823         return req;
 824 }
 825
 826 static struct tevent_req *vfs_gluster_pwrite_send(struct vfs_handle_struct
 827                                                   *handle, TALLOC_CTX *mem_ctx,
 828                                                   struct tevent_context *ev,
 829                                                   files_struct *fsp,
 830                                                   const void *data, size_t n,
 831                                                   off_t offset)
 832 {
 833         struct glusterfs_aio_state *state = NULL;
 834         struct tevent_req *req = NULL;
 835         int ret = 0;
 836
 837         state = aio_state_create(mem_ctx);
 838
 839         if (state == NULL) {
 840                 return NULL;
 841         }
 842
 843         req = state->req;
 844
 845         if (!init_gluster_aio(handle)) {
 846                 tevent_req_error(req, EIO);
 847                 return tevent_req_post(req, ev);
 848         }
 849
 850         /*
 851          * aio_glusterfs_done and aio_tevent_fd_done()
 852          * use the raw tevent context. We need to use
 853          * tevent_req_defer_callback() in order to
 854          * use the event context we're started with.
 855          */
 856         tevent_req_defer_callback(req, ev);
 857
 858         PROFILE_TIMESTAMP(&state->start);
 859         ret = glfs_pwrite_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
 860                                 fsp), data, n, offset, 0, aio_glusterfs_done,
 861                                 state);
 862         if (ret < 0) {
 863                 tevent_req_error(req, -ret);
 864                 return tevent_req_post(req, ev);
 865         }
 866
 867         return req;
 868 }
 869
 870 static ssize_t vfs_gluster_recv(struct tevent_req *req,
 871                                 struct vfs_aio_state *vfs_aio_state)
 872 {
 873         struct glusterfs_aio_wrapper *wrapper = NULL;
 874         int ret = 0;
 875
 876         wrapper = tevent_req_data(req, struct glusterfs_aio_wrapper);
 877
 878         if (wrapper == NULL) {
 879                 return -1;
 880         }
 881
 882         if (wrapper->state == NULL) {
 883                 return -1;
 884         }
 885
 886         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
 887                 return -1;
 888         }
 889
 890         *vfs_aio_state = wrapper->state->vfs_aio_state;
 891         ret = wrapper->state->ret;
 892
 893         /* Clean up the state, it is in a NULL context. */
 894
 895         TALLOC_FREE(wrapper->state);
 896
 897         return ret;
 898 }
 899
 900 static ssize_t vfs_gluster_pwrite(struct vfs_handle_struct *handle,
 901                                   files_struct *fsp, const void *data,
 902                                   size_t n, off_t offset)
 903 {
 904         return glfs_pwrite(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, offset, 0);
 905 }
 906
 907 static off_t vfs_gluster_lseek(struct vfs_handle_struct *handle,
 908                                files_struct *fsp, off_t offset, int whence)
 909 {
 910         return glfs_lseek(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), offset, whence);
 911 }
 912
 913 static ssize_t vfs_gluster_sendfile(struct vfs_handle_struct *handle, int tofd,
 914                                     files_struct *fromfsp,
 915                                     const DATA_BLOB *hdr,
 916                                     off_t offset, size_t n)
 917 {
 918         errno = ENOTSUP;
 919         return -1;
 920 }
 921
 922 static ssize_t vfs_gluster_recvfile(struct vfs_handle_struct *handle,
 923                                     int fromfd, files_struct *tofsp,
 924                                     off_t offset, size_t n)
 925 {
 926         errno = ENOTSUP;
 927         return -1;
 928 }
 929
 930 static int vfs_gluster_rename(struct vfs_handle_struct *handle,
 931                               const struct smb_filename *smb_fname_src,
 932                               const struct smb_filename *smb_fname_dst)
 933 {
 934         return glfs_rename(handle->data, smb_fname_src->base_name,
 935                            smb_fname_dst->base_name);
 936 }
 937
 938 static struct tevent_req *vfs_gluster_fsync_send(struct vfs_handle_struct
 939                                                  *handle, TALLOC_CTX *mem_ctx,
 940                                                  struct tevent_context *ev,
 941                                                  files_struct *fsp)
 942 {
 943         struct tevent_req *req = NULL;
 944         struct glusterfs_aio_state *state = NULL;
 945         int ret = 0;
 946
 947         state = aio_state_create(mem_ctx);
 948
 949         if (state == NULL) {
 950                 return NULL;
 951         }
 952
 953         req = state->req;
 954
 955         if (!init_gluster_aio(handle)) {
 956                 tevent_req_error(req, EIO);
 957                 return tevent_req_post(req, ev);
 958         }
 959
 960         /*
 961          * aio_glusterfs_done and aio_tevent_fd_done()
 962          * use the raw tevent context. We need to use
 963          * tevent_req_defer_callback() in order to
 964          * use the event context we're started with.
 965          */
 966         tevent_req_defer_callback(req, ev);
 967
 968         PROFILE_TIMESTAMP(&state->start);
 969         ret = glfs_fsync_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
 970                                 fsp), aio_glusterfs_done, state);
 971         if (ret < 0) {
 972                 tevent_req_error(req, -ret);
 973                 return tevent_req_post(req, ev);
 974         }
 975         return req;
 976 }
 977
 978 static int vfs_gluster_fsync_recv(struct tevent_req *req,
 979                                   struct vfs_aio_state *vfs_aio_state)
 980 {
 981         /*
 982          * Use implicit conversion ssize_t->int
 983          */
 984         return vfs_gluster_recv(req, vfs_aio_state);
 985 }
 986
 987 static int vfs_gluster_stat(struct vfs_handle_struct *handle,
 988                             struct smb_filename *smb_fname)
 989 {
 990         struct stat st;
 991         int ret;
 992
 993         ret = glfs_stat(handle->data, smb_fname->base_name, &st);
 994         if (ret == 0) {
 995                 smb_stat_ex_from_stat(&smb_fname->st, &st);
 996         }
 997         if (ret < 0 && errno != ENOENT) {
 998                 DEBUG(0, ("glfs_stat(%s) failed: %s\n",
 999                           smb_fname->base_name, strerror(errno)));
1000         }
1001         return ret;
1002 }
1003
1004 static int vfs_gluster_fstat(struct vfs_handle_struct *handle,
1005                              files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1006 {
1007         struct stat st;
1008         int ret;
1009
1010         ret = glfs_fstat(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), &st);
1011         if (ret == 0) {
1012                 smb_stat_ex_from_stat(sbuf, &st);
1013         }
1014         if (ret < 0) {
1015                 DEBUG(0, ("glfs_fstat(%d) failed: %s\n",
1016                           fsp->fh->fd, strerror(errno)));
1017         }
1018         return ret;
1019 }
1020
1021 static int vfs_gluster_lstat(struct vfs_handle_struct *handle,
1022                              struct smb_filename *smb_fname)
1023 {
1024         struct stat st;
1025         int ret;
1026
1027         ret = glfs_lstat(handle->data, smb_fname->base_name, &st);
1028         if (ret == 0) {
1029                 smb_stat_ex_from_stat(&smb_fname->st, &st);
1030         }
1031         if (ret < 0 && errno != ENOENT) {
1032                 DEBUG(0, ("glfs_lstat(%s) failed: %s\n",
1033                           smb_fname->base_name, strerror(errno)));
1034         }
1035         return ret;
1036 }
1037
1038 static uint64_t vfs_gluster_get_alloc_size(struct vfs_handle_struct *handle,
1039                                            files_struct *fsp,
1040                                            const SMB_STRUCT_STAT *sbuf)
1041 {
1042         return sbuf->st_ex_blocks * 512;
1043 }
1044
1045 static int vfs_gluster_unlink(struct vfs_handle_struct *handle,
1046                               const struct smb_filename *smb_fname)
1047 {
1048         return glfs_unlink(handle->data, smb_fname->base_name);
1049 }
1050
1051 static int vfs_gluster_chmod(struct vfs_handle_struct *handle,
1052                                 const struct smb_filename *smb_fname,
1053                                 mode_t mode)
1054 {
1055         return glfs_chmod(handle->data, smb_fname->base_name, mode);
1056 }
1057
1058 static int vfs_gluster_fchmod(struct vfs_handle_struct *handle,
1059                               files_struct *fsp, mode_t mode)
1060 {
1061         return glfs_fchmod(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), mode);
1062 }
1063
1064 static int vfs_gluster_chown(struct vfs_handle_struct *handle,
1065                         const struct smb_filename *smb_fname,
1066                         uid_t uid,
1067                         gid_t gid)
1068 {
1069         return glfs_chown(handle->data, smb_fname->base_name, uid, gid);
1070 }
1071
1072 static int vfs_gluster_fchown(struct vfs_handle_struct *handle,
1073                               files_struct *fsp, uid_t uid, gid_t gid)
1074 {
1075         return glfs_fchown(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), uid, gid);
1076 }
1077
1078 static int vfs_gluster_lchown(struct vfs_handle_struct *handle,
1079                         const struct smb_filename *smb_fname,
1080                         uid_t uid,
1081                         gid_t gid)
1082 {
1083         return glfs_lchown(handle->data, smb_fname->base_name, uid, gid);
1084 }
1085
1086 static int vfs_gluster_chdir(struct vfs_handle_struct *handle,
1087                         const struct smb_filename *smb_fname)
1088 {
1089         return glfs_chdir(handle->data, smb_fname->base_name);
1090 }
1091
1092 static struct smb_filename *vfs_gluster_getwd(struct vfs_handle_struct *handle,
1093                                 TALLOC_CTX *ctx)
1094 {
1095         char *cwd;
1096         char *ret;
1097         struct smb_filename *smb_fname = NULL;
1098
1099         cwd = SMB_CALLOC_ARRAY(char, PATH_MAX);
1100         if (cwd == NULL) {
1101                 return NULL;
1102         }
1103
1104         ret = glfs_getcwd(handle->data, cwd, PATH_MAX - 1);
1105         if (ret == NULL) {
1106                 SAFE_FREE(cwd);
1107                 return NULL;
1108         }
1109         smb_fname = synthetic_smb_fname(ctx,
1110                                         ret,
1111                                         NULL,
1112                                         NULL,
1113                                         0);
1114         SAFE_FREE(cwd);
1115         return smb_fname;
1116 }
1117
1118 static int vfs_gluster_ntimes(struct vfs_handle_struct *handle,
1119                               const struct smb_filename *smb_fname,
1120                               struct smb_file_time *ft)
1121 {
1122         struct timespec times[2];
1123
1124         if (null_timespec(ft->atime)) {
1125                 times[0].tv_sec = smb_fname->st.st_ex_atime.tv_sec;
1126                 times[0].tv_nsec = smb_fname->st.st_ex_atime.tv_nsec;
1127         } else {
1128                 times[0].tv_sec = ft->atime.tv_sec;
1129                 times[0].tv_nsec = ft->atime.tv_nsec;
1130         }
1131
1132         if (null_timespec(ft->mtime)) {
1133                 times[1].tv_sec = smb_fname->st.st_ex_mtime.tv_sec;
1134                 times[1].tv_nsec = smb_fname->st.st_ex_mtime.tv_nsec;
1135         } else {
1136                 times[1].tv_sec = ft->mtime.tv_sec;
1137                 times[1].tv_nsec = ft->mtime.tv_nsec;
1138         }
1139
1140         if ((timespec_compare(&times[0],
1141                               &smb_fname->st.st_ex_atime) == 0) &&
1142             (timespec_compare(&times[1],
1143                               &smb_fname->st.st_ex_mtime) == 0)) {
1144                 return 0;
1145         }
1146
1147         return glfs_utimens(handle->data, smb_fname->base_name, times);
1148 }
1149
1150 static int vfs_gluster_ftruncate(struct vfs_handle_struct *handle,
1151                                  files_struct *fsp, off_t offset)
1152 {
1153         return glfs_ftruncate(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), offset);
1154 }
1155
1156 static int vfs_gluster_fallocate(struct vfs_handle_struct *handle,
1157                                  struct files_struct *fsp,
1158                                  uint32_t mode,
1159                                  off_t offset, off_t len)
1160 {
1161 #ifdef HAVE_GFAPI_VER_6
1162         int keep_size, punch_hole;
1163
1164         keep_size = mode & VFS_FALLOCATE_FL_KEEP_SIZE;
1165         punch_hole = mode & VFS_FALLOCATE_FL_PUNCH_HOLE;
1166
1167         mode &= ~(VFS_FALLOCATE_FL_KEEP_SIZE|VFS_FALLOCATE_FL_PUNCH_HOLE);
1168         if (mode != 0) {
1169                 errno = ENOTSUP;
1170                 return -1;
1171         }
1172
1173         if (punch_hole) {
1174                 return glfs_discard(*(glfs_fd_t **)
1175                                     VFS_FETCH_FSP_EXTENSION(handle, fsp),
1176                                     offset, len);
1177         }
1178
1179         return glfs_fallocate(*(glfs_fd_t **)
1180                               VFS_FETCH_FSP_EXTENSION(handle, fsp),
1181                               keep_size, offset, len);
1182 #else
1183         errno = ENOTSUP;
1184         return -1;
1185 #endif
1186 }
1187
1188 static struct smb_filename *vfs_gluster_realpath(struct vfs_handle_struct *handle,
1189                                 TALLOC_CTX *ctx,
1190                                 const struct smb_filename *smb_fname)
1191 {
1192         char *result = NULL;
1193         struct smb_filename *result_fname = NULL;
1194         char *resolved_path = SMB_MALLOC_ARRAY(char, PATH_MAX+1);
1195
1196         if (resolved_path == NULL) {
1197                 errno = ENOMEM;
1198                 return NULL;
1199         }
1200
1201         result = glfs_realpath(handle->data,
1202                         smb_fname->base_name,
1203                         resolved_path);
1204         if (result != NULL) {
1205                 result_fname = synthetic_smb_fname(ctx, result, NULL, NULL, 0);
1206         }
1207
1208         SAFE_FREE(resolved_path);
1209         return result_fname;
1210 }
1211
1212 static bool vfs_gluster_lock(struct vfs_handle_struct *handle,
1213                              files_struct *fsp, int op, off_t offset,
1214                              off_t count, int type)
1215 {
1216         struct flock flock = { 0, };
1217         int ret;
1218
1219         flock.l_type = type;
1220         flock.l_whence = SEEK_SET;
1221         flock.l_start = offset;
1222         flock.l_len = count;
1223         flock.l_pid = 0;
1224
1225         ret = glfs_posix_lock(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), op, &flock);
1226
1227         if (op == F_GETLK) {
1228                 /* lock query, true if someone else has locked */
1229                 if ((ret != -1) &&
1230                     (flock.l_type != F_UNLCK) &&
1231                     (flock.l_pid != 0) && (flock.l_pid != getpid()))
1232                         return true;
1233                 /* not me */
1234                 return false;
1235         }
1236
1237         if (ret == -1) {
1238                 return false;
1239         }
1240
1241         return true;
1242 }
1243
1244 static int vfs_gluster_kernel_flock(struct vfs_handle_struct *handle,
1245                                     files_struct *fsp, uint32_t share_mode,
1246                                     uint32_t access_mask)
1247 {
1248         errno = ENOSYS;
1249         return -1;
1250 }
1251
1252 static int vfs_gluster_linux_setlease(struct vfs_handle_struct *handle,
1253                                       files_struct *fsp, int leasetype)
1254 {
1255         errno = ENOSYS;
1256         return -1;
1257 }
1258
1259 static bool vfs_gluster_getlock(struct vfs_handle_struct *handle,
1260                                 files_struct *fsp, off_t *poffset,
1261                                 off_t *pcount, int *ptype, pid_t *ppid)
1262 {
1263         struct flock flock = { 0, };
1264         int ret;
1265
1266         flock.l_type = *ptype;
1267         flock.l_whence = SEEK_SET;
1268         flock.l_start = *poffset;
1269         flock.l_len = *pcount;
1270         flock.l_pid = 0;
1271
1272         ret = glfs_posix_lock(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), F_GETLK, &flock);
1273
1274         if (ret == -1) {
1275                 return false;
1276         }
1277
1278         *ptype = flock.l_type;
1279         *poffset = flock.l_start;
1280         *pcount = flock.l_len;
1281         *ppid = flock.l_pid;
1282
1283         return true;
1284 }
1285
1286 static int vfs_gluster_symlink(struct vfs_handle_struct *handle,
1287                                 const char *link_target,
1288                                 const struct smb_filename *new_smb_fname)
1289 {
1290         return glfs_symlink(handle->data,
1291                         link_target,
1292                         new_smb_fname->base_name);
1293 }
1294
1295 static int vfs_gluster_readlink(struct vfs_handle_struct *handle,
1296                                 const struct smb_filename *smb_fname,
1297                                 char *buf,
1298                                 size_t bufsiz)
1299 {
1300         return glfs_readlink(handle->data, smb_fname->base_name, buf, bufsiz);
1301 }
1302
1303 static int vfs_gluster_link(struct vfs_handle_struct *handle,
1304                                 const struct smb_filename *old_smb_fname,
1305                                 const struct smb_filename *new_smb_fname)
1306 {
1307         return glfs_link(handle->data,
1308                         old_smb_fname->base_name,
1309                         new_smb_fname->base_name);
1310 }
1311
1312 static int vfs_gluster_mknod(struct vfs_handle_struct *handle,
1313                                 const struct smb_filename *smb_fname,
1314                                 mode_t mode,
1315                                 SMB_DEV_T dev)
1316 {
1317         return glfs_mknod(handle->data, smb_fname->base_name, mode, dev);
1318 }
1319
1320 static int vfs_gluster_chflags(struct vfs_handle_struct *handle,
1321                                 const struct smb_filename *smb_fname,
1322                                 unsigned int flags)
1323 {
1324         errno = ENOSYS;
1325         return -1;
1326 }
1327
1328 static int vfs_gluster_get_real_filename(struct vfs_handle_struct *handle,
1329                                          const char *path, const char *name,
1330                                          TALLOC_CTX *mem_ctx, char **found_name)
1331 {
1332         int ret;
1333         char key_buf[NAME_MAX + 64];
1334         char val_buf[NAME_MAX + 1];
1335
1336         if (strlen(name) >= NAME_MAX) {
1337                 errno = ENAMETOOLONG;
1338                 return -1;
1339         }
1340
1341         snprintf(key_buf, NAME_MAX + 64,
1342                  "glusterfs.get_real_filename:%s", name);
1343
1344         ret = glfs_getxattr(handle->data, path, key_buf, val_buf, NAME_MAX + 1);
1345         if (ret == -1) {
1346                 if (errno == ENODATA) {
1347                         errno = EOPNOTSUPP;
1348                 }
1349                 return -1;
1350         }
1351
1352         *found_name = talloc_strdup(mem_ctx, val_buf);
1353         if (found_name[0] == NULL) {
1354                 errno = ENOMEM;
1355                 return -1;
1356         }
1357         return 0;
1358 }
1359
1360 static const char *vfs_gluster_connectpath(struct vfs_handle_struct *handle,
1361                                 const struct smb_filename *smb_fname)
1362 {
1363         return handle->conn->connectpath;
1364 }
1365
1366 /* EA Operations */
1367
1368 static ssize_t vfs_gluster_getxattr(struct vfs_handle_struct *handle,
1369                                 const struct smb_filename *smb_fname,
1370                                 const char *name,
1371                                 void *value,
1372                                 size_t size)
1373 {
1374         return glfs_getxattr(handle->data, smb_fname->base_name,
1375                         name, value, size);
1376 }
1377
1378 static ssize_t vfs_gluster_fgetxattr(struct vfs_handle_struct *handle,
1379                                      files_struct *fsp, const char *name,
1380                                      void *value, size_t size)
1381 {
1382         return glfs_fgetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name, value, size);
1383 }
1384
1385 static ssize_t vfs_gluster_listxattr(struct vfs_handle_struct *handle,
1386                                 const struct smb_filename *smb_fname,
1387                                 char *list,
1388                                 size_t size)
1389 {
1390         return glfs_listxattr(handle->data, smb_fname->base_name, list, size);
1391 }
1392
1393 static ssize_t vfs_gluster_flistxattr(struct vfs_handle_struct *handle,
1394                                       files_struct *fsp, char *list,
1395                                       size_t size)
1396 {
1397         return glfs_flistxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), list, size);
1398 }
1399
1400 static int vfs_gluster_removexattr(struct vfs_handle_struct *handle,
1401                                 const struct smb_filename *smb_fname,
1402                                 const char *name)
1403 {
1404         return glfs_removexattr(handle->data, smb_fname->base_name, name);
1405 }
1406
1407 static int vfs_gluster_fremovexattr(struct vfs_handle_struct *handle,
1408                                     files_struct *fsp, const char *name)
1409 {
1410         return glfs_fremovexattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name);
1411 }
1412
1413 static int vfs_gluster_setxattr(struct vfs_handle_struct *handle,
1414                                 const struct smb_filename *smb_fname,
1415                                 const char *name,
1416                                 const void *value, size_t size, int flags)
1417 {
1418         return glfs_setxattr(handle->data, smb_fname->base_name, name, value, size, flags);
1419 }
1420
1421 static int vfs_gluster_fsetxattr(struct vfs_handle_struct *handle,
1422                                  files_struct *fsp, const char *name,
1423                                  const void *value, size_t size, int flags)
1424 {
1425         return glfs_fsetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name, value, size,
1426                               flags);
1427 }
1428
1429 /* AIO Operations */
1430
1431 static bool vfs_gluster_aio_force(struct vfs_handle_struct *handle,
1432                                   files_struct *fsp)
1433 {
1434         return false;
1435 }
1436
1437 static struct vfs_fn_pointers glusterfs_fns = {
1438
1439         /* Disk Operations */
1440
1441         .connect_fn = vfs_gluster_connect,
1442         .disconnect_fn = vfs_gluster_disconnect,
1443         .disk_free_fn = vfs_gluster_disk_free,
1444         .get_quota_fn = vfs_gluster_get_quota,
1445         .set_quota_fn = vfs_gluster_set_quota,
1446         .statvfs_fn = vfs_gluster_statvfs,
1447         .fs_capabilities_fn = vfs_gluster_fs_capabilities,
1448
1449         .get_dfs_referrals_fn = NULL,
1450
1451         /* Directory Operations */
1452
1453         .opendir_fn = vfs_gluster_opendir,
1454         .fdopendir_fn = vfs_gluster_fdopendir,
1455         .readdir_fn = vfs_gluster_readdir,
1456         .seekdir_fn = vfs_gluster_seekdir,
1457         .telldir_fn = vfs_gluster_telldir,
1458         .rewind_dir_fn = vfs_gluster_rewinddir,
1459         .mkdir_fn = vfs_gluster_mkdir,
1460         .rmdir_fn = vfs_gluster_rmdir,
1461         .closedir_fn = vfs_gluster_closedir,
1462
1463         /* File Operations */
1464
1465         .open_fn = vfs_gluster_open,
1466         .create_file_fn = NULL,
1467         .close_fn = vfs_gluster_close,
1468         .pread_fn = vfs_gluster_pread,
1469         .pread_send_fn = vfs_gluster_pread_send,
1470         .pread_recv_fn = vfs_gluster_recv,
1471         .pwrite_fn = vfs_gluster_pwrite,
1472         .pwrite_send_fn = vfs_gluster_pwrite_send,
1473         .pwrite_recv_fn = vfs_gluster_recv,
1474         .lseek_fn = vfs_gluster_lseek,
1475         .sendfile_fn = vfs_gluster_sendfile,
1476         .recvfile_fn = vfs_gluster_recvfile,
1477         .rename_fn = vfs_gluster_rename,
1478         .fsync_send_fn = vfs_gluster_fsync_send,
1479         .fsync_recv_fn = vfs_gluster_fsync_recv,
1480
1481         .stat_fn = vfs_gluster_stat,
1482         .fstat_fn = vfs_gluster_fstat,
1483         .lstat_fn = vfs_gluster_lstat,
1484         .get_alloc_size_fn = vfs_gluster_get_alloc_size,
1485         .unlink_fn = vfs_gluster_unlink,
1486
1487         .chmod_fn = vfs_gluster_chmod,
1488         .fchmod_fn = vfs_gluster_fchmod,
1489         .chown_fn = vfs_gluster_chown,
1490         .fchown_fn = vfs_gluster_fchown,
1491         .lchown_fn = vfs_gluster_lchown,
1492         .chdir_fn = vfs_gluster_chdir,
1493         .getwd_fn = vfs_gluster_getwd,
1494         .ntimes_fn = vfs_gluster_ntimes,
1495         .ftruncate_fn = vfs_gluster_ftruncate,
1496         .fallocate_fn = vfs_gluster_fallocate,
1497         .lock_fn = vfs_gluster_lock,
1498         .kernel_flock_fn = vfs_gluster_kernel_flock,
1499         .linux_setlease_fn = vfs_gluster_linux_setlease,
1500         .getlock_fn = vfs_gluster_getlock,
1501         .symlink_fn = vfs_gluster_symlink,
1502         .readlink_fn = vfs_gluster_readlink,
1503         .link_fn = vfs_gluster_link,
1504         .mknod_fn = vfs_gluster_mknod,
1505         .realpath_fn = vfs_gluster_realpath,
1506         .chflags_fn = vfs_gluster_chflags,
1507         .file_id_create_fn = NULL,
1508         .streaminfo_fn = NULL,
1509         .get_real_filename_fn = vfs_gluster_get_real_filename,
1510         .connectpath_fn = vfs_gluster_connectpath,
1511
1512         .brl_lock_windows_fn = NULL,
1513         .brl_unlock_windows_fn = NULL,
1514         .brl_cancel_windows_fn = NULL,
1515         .strict_lock_check_fn = NULL,
1516         .translate_name_fn = NULL,
1517         .fsctl_fn = NULL,
1518
1519         /* NT ACL Operations */
1520         .fget_nt_acl_fn = NULL,
1521         .get_nt_acl_fn = NULL,
1522         .fset_nt_acl_fn = NULL,
1523         .audit_file_fn = NULL,
1524
1525         /* Posix ACL Operations */
1526         .sys_acl_get_file_fn = posixacl_xattr_acl_get_file,
1527         .sys_acl_get_fd_fn = posixacl_xattr_acl_get_fd,
1528         .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
1529         .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
1530         .sys_acl_set_file_fn = posixacl_xattr_acl_set_file,
1531         .sys_acl_set_fd_fn = posixacl_xattr_acl_set_fd,
1532         .sys_acl_delete_def_file_fn = posixacl_xattr_acl_delete_def_file,
1533
1534         /* EA Operations */
1535         .getxattr_fn = vfs_gluster_getxattr,
1536         .fgetxattr_fn = vfs_gluster_fgetxattr,
1537         .listxattr_fn = vfs_gluster_listxattr,
1538         .flistxattr_fn = vfs_gluster_flistxattr,
1539         .removexattr_fn = vfs_gluster_removexattr,
1540         .fremovexattr_fn = vfs_gluster_fremovexattr,
1541         .setxattr_fn = vfs_gluster_setxattr,
1542         .fsetxattr_fn = vfs_gluster_fsetxattr,
1543
1544         /* AIO Operations */
1545         .aio_force_fn = vfs_gluster_aio_force,
1546
1547         /* Durable handle Operations */
1548         .durable_cookie_fn = NULL,
1549         .durable_disconnect_fn = NULL,
1550         .durable_reconnect_fn = NULL,
1551 };
1552
1553 static_decl_vfs;
1554 NTSTATUS vfs_glusterfs_init(TALLOC_CTX *ctx)
1555 {
1556         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1557                                 "glusterfs", &glusterfs_fns);
1558 }