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         /*
 733          * We use the raw tevent context here,
 734          * as this is a global event handler.
 735          *
 736          * The tevent_req_defer_callback()
 737          * calls will make sure the results
 738          * of async calls are propagated
 739          * to the correct tevent_context.
 740          */
 741         aio_read_event = tevent_add_fd(handle->conn->sconn->raw_ev_ctx,
 742                                         NULL,
 743                                         read_fd,
 744                                         TEVENT_FD_READ,
 745                                         aio_tevent_fd_done,
 746                                         NULL);
 747         if (aio_read_event == NULL) {
 748                 goto fail;
 749         }
 750
 751         return true;
 752 fail:
 753         TALLOC_FREE(aio_read_event);
 754         if (read_fd != -1) {
 755                 close(read_fd);
 756                 close(write_fd);
 757                 read_fd = -1;
 758                 write_fd = -1;
 759         }
 760         return false;
 761 }
 762
 763 static struct glusterfs_aio_state *aio_state_create(TALLOC_CTX *mem_ctx)
 764 {
 765         struct tevent_req *req = NULL;
 766         struct glusterfs_aio_state *state = NULL;
 767         struct glusterfs_aio_wrapper *wrapper = NULL;
 768
 769         req = tevent_req_create(mem_ctx, &wrapper, struct glusterfs_aio_wrapper);
 770
 771         if (req == NULL) {
 772                 return NULL;
 773         }
 774
 775         state = talloc_zero(NULL, struct glusterfs_aio_state);
 776
 777         if (state == NULL) {
 778                 TALLOC_FREE(req);
 779                 return NULL;
 780         }
 781
 782         talloc_set_destructor(wrapper, aio_wrapper_destructor);
 783         state->cancelled = false;
 784         state->req = req;
 785
 786         wrapper->state = state;
 787
 788         return state;
 789 }
 790
 791 static struct tevent_req *vfs_gluster_pread_send(struct vfs_handle_struct
 792                                                   *handle, TALLOC_CTX *mem_ctx,
 793                                                   struct tevent_context *ev,
 794                                                   files_struct *fsp,
 795                                                   void *data, size_t n,
 796                                                   off_t offset)
 797 {
 798         struct glusterfs_aio_state *state = NULL;
 799         struct tevent_req *req = NULL;
 800         int ret = 0;
 801
 802         state = aio_state_create(mem_ctx);
 803
 804         if (state == NULL) {
 805                 return NULL;
 806         }
 807
 808         req = state->req;
 809
 810         if (!init_gluster_aio(handle)) {
 811                 tevent_req_error(req, EIO);
 812                 return tevent_req_post(req, ev);
 813         }
 814
 815         /*
 816          * aio_glusterfs_done and aio_tevent_fd_done()
 817          * use the raw tevent context. We need to use
 818          * tevent_req_defer_callback() in order to
 819          * use the event context we're started with.
 820          */
 821         tevent_req_defer_callback(req, ev);
 822
 823         PROFILE_TIMESTAMP(&state->start);
 824         ret = glfs_pread_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
 825                                 fsp), data, n, offset, 0, aio_glusterfs_done,
 826                                 state);
 827         if (ret < 0) {
 828                 tevent_req_error(req, -ret);
 829                 return tevent_req_post(req, ev);
 830         }
 831
 832         return req;
 833 }
 834
 835 static struct tevent_req *vfs_gluster_pwrite_send(struct vfs_handle_struct
 836                                                   *handle, TALLOC_CTX *mem_ctx,
 837                                                   struct tevent_context *ev,
 838                                                   files_struct *fsp,
 839                                                   const void *data, size_t n,
 840                                                   off_t offset)
 841 {
 842         struct glusterfs_aio_state *state = NULL;
 843         struct tevent_req *req = NULL;
 844         int ret = 0;
 845
 846         state = aio_state_create(mem_ctx);
 847
 848         if (state == NULL) {
 849                 return NULL;
 850         }
 851
 852         req = state->req;
 853
 854         if (!init_gluster_aio(handle)) {
 855                 tevent_req_error(req, EIO);
 856                 return tevent_req_post(req, ev);
 857         }
 858
 859         /*
 860          * aio_glusterfs_done and aio_tevent_fd_done()
 861          * use the raw tevent context. We need to use
 862          * tevent_req_defer_callback() in order to
 863          * use the event context we're started with.
 864          */
 865         tevent_req_defer_callback(req, ev);
 866
 867         PROFILE_TIMESTAMP(&state->start);
 868         ret = glfs_pwrite_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
 869                                 fsp), data, n, offset, 0, aio_glusterfs_done,
 870                                 state);
 871         if (ret < 0) {
 872                 tevent_req_error(req, -ret);
 873                 return tevent_req_post(req, ev);
 874         }
 875
 876         return req;
 877 }
 878
 879 static ssize_t vfs_gluster_recv(struct tevent_req *req,
 880                                 struct vfs_aio_state *vfs_aio_state)
 881 {
 882         struct glusterfs_aio_wrapper *wrapper = NULL;
 883         int ret = 0;
 884
 885         wrapper = tevent_req_data(req, struct glusterfs_aio_wrapper);
 886
 887         if (wrapper == NULL) {
 888                 return -1;
 889         }
 890
 891         if (wrapper->state == NULL) {
 892                 return -1;
 893         }
 894
 895         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
 896                 return -1;
 897         }
 898
 899         *vfs_aio_state = wrapper->state->vfs_aio_state;
 900         ret = wrapper->state->ret;
 901
 902         /* Clean up the state, it is in a NULL context. */
 903
 904         TALLOC_FREE(wrapper->state);
 905
 906         return ret;
 907 }
 908
 909 static ssize_t vfs_gluster_pwrite(struct vfs_handle_struct *handle,
 910                                   files_struct *fsp, const void *data,
 911                                   size_t n, off_t offset)
 912 {
 913         return glfs_pwrite(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, offset, 0);
 914 }
 915
 916 static off_t vfs_gluster_lseek(struct vfs_handle_struct *handle,
 917                                files_struct *fsp, off_t offset, int whence)
 918 {
 919         return glfs_lseek(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), offset, whence);
 920 }
 921
 922 static ssize_t vfs_gluster_sendfile(struct vfs_handle_struct *handle, int tofd,
 923                                     files_struct *fromfsp,
 924                                     const DATA_BLOB *hdr,
 925                                     off_t offset, size_t n)
 926 {
 927         errno = ENOTSUP;
 928         return -1;
 929 }
 930
 931 static ssize_t vfs_gluster_recvfile(struct vfs_handle_struct *handle,
 932                                     int fromfd, files_struct *tofsp,
 933                                     off_t offset, size_t n)
 934 {
 935         errno = ENOTSUP;
 936         return -1;
 937 }
 938
 939 static int vfs_gluster_rename(struct vfs_handle_struct *handle,
 940                               const struct smb_filename *smb_fname_src,
 941                               const struct smb_filename *smb_fname_dst)
 942 {
 943         return glfs_rename(handle->data, smb_fname_src->base_name,
 944                            smb_fname_dst->base_name);
 945 }
 946
 947 static struct tevent_req *vfs_gluster_fsync_send(struct vfs_handle_struct
 948                                                  *handle, TALLOC_CTX *mem_ctx,
 949                                                  struct tevent_context *ev,
 950                                                  files_struct *fsp)
 951 {
 952         struct tevent_req *req = NULL;
 953         struct glusterfs_aio_state *state = NULL;
 954         int ret = 0;
 955
 956         state = aio_state_create(mem_ctx);
 957
 958         if (state == NULL) {
 959                 return NULL;
 960         }
 961
 962         req = state->req;
 963
 964         if (!init_gluster_aio(handle)) {
 965                 tevent_req_error(req, EIO);
 966                 return tevent_req_post(req, ev);
 967         }
 968
 969         /*
 970          * aio_glusterfs_done and aio_tevent_fd_done()
 971          * use the raw tevent context. We need to use
 972          * tevent_req_defer_callback() in order to
 973          * use the event context we're started with.
 974          */
 975         tevent_req_defer_callback(req, ev);
 976
 977         PROFILE_TIMESTAMP(&state->start);
 978         ret = glfs_fsync_async(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle,
 979                                 fsp), aio_glusterfs_done, state);
 980         if (ret < 0) {
 981                 tevent_req_error(req, -ret);
 982                 return tevent_req_post(req, ev);
 983         }
 984         return req;
 985 }
 986
 987 static int vfs_gluster_fsync_recv(struct tevent_req *req,
 988                                   struct vfs_aio_state *vfs_aio_state)
 989 {
 990         /*
 991          * Use implicit conversion ssize_t->int
 992          */
 993         return vfs_gluster_recv(req, vfs_aio_state);
 994 }
 995
 996 static int vfs_gluster_stat(struct vfs_handle_struct *handle,
 997                             struct smb_filename *smb_fname)
 998 {
 999         struct stat st;
1000         int ret;
1001
1002         ret = glfs_stat(handle->data, smb_fname->base_name, &st);
1003         if (ret == 0) {
1004                 smb_stat_ex_from_stat(&smb_fname->st, &st);
1005         }
1006         if (ret < 0 && errno != ENOENT) {
1007                 DEBUG(0, ("glfs_stat(%s) failed: %s\n",
1008                           smb_fname->base_name, strerror(errno)));
1009         }
1010         return ret;
1011 }
1012
1013 static int vfs_gluster_fstat(struct vfs_handle_struct *handle,
1014                              files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1015 {
1016         struct stat st;
1017         int ret;
1018
1019         ret = glfs_fstat(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), &st);
1020         if (ret == 0) {
1021                 smb_stat_ex_from_stat(sbuf, &st);
1022         }
1023         if (ret < 0) {
1024                 DEBUG(0, ("glfs_fstat(%d) failed: %s\n",
1025                           fsp->fh->fd, strerror(errno)));
1026         }
1027         return ret;
1028 }
1029
1030 static int vfs_gluster_lstat(struct vfs_handle_struct *handle,
1031                              struct smb_filename *smb_fname)
1032 {
1033         struct stat st;
1034         int ret;
1035
1036         ret = glfs_lstat(handle->data, smb_fname->base_name, &st);
1037         if (ret == 0) {
1038                 smb_stat_ex_from_stat(&smb_fname->st, &st);
1039         }
1040         if (ret < 0 && errno != ENOENT) {
1041                 DEBUG(0, ("glfs_lstat(%s) failed: %s\n",
1042                           smb_fname->base_name, strerror(errno)));
1043         }
1044         return ret;
1045 }
1046
1047 static uint64_t vfs_gluster_get_alloc_size(struct vfs_handle_struct *handle,
1048                                            files_struct *fsp,
1049                                            const SMB_STRUCT_STAT *sbuf)
1050 {
1051         return sbuf->st_ex_blocks * 512;
1052 }
1053
1054 static int vfs_gluster_unlink(struct vfs_handle_struct *handle,
1055                               const struct smb_filename *smb_fname)
1056 {
1057         return glfs_unlink(handle->data, smb_fname->base_name);
1058 }
1059
1060 static int vfs_gluster_chmod(struct vfs_handle_struct *handle,
1061                                 const struct smb_filename *smb_fname,
1062                                 mode_t mode)
1063 {
1064         return glfs_chmod(handle->data, smb_fname->base_name, mode);
1065 }
1066
1067 static int vfs_gluster_fchmod(struct vfs_handle_struct *handle,
1068                               files_struct *fsp, mode_t mode)
1069 {
1070         return glfs_fchmod(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), mode);
1071 }
1072
1073 static int vfs_gluster_chown(struct vfs_handle_struct *handle,
1074                         const struct smb_filename *smb_fname,
1075                         uid_t uid,
1076                         gid_t gid)
1077 {
1078         return glfs_chown(handle->data, smb_fname->base_name, uid, gid);
1079 }
1080
1081 static int vfs_gluster_fchown(struct vfs_handle_struct *handle,
1082                               files_struct *fsp, uid_t uid, gid_t gid)
1083 {
1084         return glfs_fchown(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), uid, gid);
1085 }
1086
1087 static int vfs_gluster_lchown(struct vfs_handle_struct *handle,
1088                         const struct smb_filename *smb_fname,
1089                         uid_t uid,
1090                         gid_t gid)
1091 {
1092         return glfs_lchown(handle->data, smb_fname->base_name, uid, gid);
1093 }
1094
1095 static int vfs_gluster_chdir(struct vfs_handle_struct *handle,
1096                         const struct smb_filename *smb_fname)
1097 {
1098         return glfs_chdir(handle->data, smb_fname->base_name);
1099 }
1100
1101 static struct smb_filename *vfs_gluster_getwd(struct vfs_handle_struct *handle,
1102                                 TALLOC_CTX *ctx)
1103 {
1104         char *cwd;
1105         char *ret;
1106         struct smb_filename *smb_fname = NULL;
1107
1108         cwd = SMB_CALLOC_ARRAY(char, PATH_MAX);
1109         if (cwd == NULL) {
1110                 return NULL;
1111         }
1112
1113         ret = glfs_getcwd(handle->data, cwd, PATH_MAX - 1);
1114         if (ret == NULL) {
1115                 SAFE_FREE(cwd);
1116                 return NULL;
1117         }
1118         smb_fname = synthetic_smb_fname(ctx,
1119                                         ret,
1120                                         NULL,
1121                                         NULL,
1122                                         0);
1123         SAFE_FREE(cwd);
1124         return smb_fname;
1125 }
1126
1127 static int vfs_gluster_ntimes(struct vfs_handle_struct *handle,
1128                               const struct smb_filename *smb_fname,
1129                               struct smb_file_time *ft)
1130 {
1131         struct timespec times[2];
1132
1133         if (null_timespec(ft->atime)) {
1134                 times[0].tv_sec = smb_fname->st.st_ex_atime.tv_sec;
1135                 times[0].tv_nsec = smb_fname->st.st_ex_atime.tv_nsec;
1136         } else {
1137                 times[0].tv_sec = ft->atime.tv_sec;
1138                 times[0].tv_nsec = ft->atime.tv_nsec;
1139         }
1140
1141         if (null_timespec(ft->mtime)) {
1142                 times[1].tv_sec = smb_fname->st.st_ex_mtime.tv_sec;
1143                 times[1].tv_nsec = smb_fname->st.st_ex_mtime.tv_nsec;
1144         } else {
1145                 times[1].tv_sec = ft->mtime.tv_sec;
1146                 times[1].tv_nsec = ft->mtime.tv_nsec;
1147         }
1148
1149         if ((timespec_compare(&times[0],
1150                               &smb_fname->st.st_ex_atime) == 0) &&
1151             (timespec_compare(&times[1],
1152                               &smb_fname->st.st_ex_mtime) == 0)) {
1153                 return 0;
1154         }
1155
1156         return glfs_utimens(handle->data, smb_fname->base_name, times);
1157 }
1158
1159 static int vfs_gluster_ftruncate(struct vfs_handle_struct *handle,
1160                                  files_struct *fsp, off_t offset)
1161 {
1162         return glfs_ftruncate(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), offset);
1163 }
1164
1165 static int vfs_gluster_fallocate(struct vfs_handle_struct *handle,
1166                                  struct files_struct *fsp,
1167                                  uint32_t mode,
1168                                  off_t offset, off_t len)
1169 {
1170 #ifdef HAVE_GFAPI_VER_6
1171         int keep_size, punch_hole;
1172
1173         keep_size = mode & VFS_FALLOCATE_FL_KEEP_SIZE;
1174         punch_hole = mode & VFS_FALLOCATE_FL_PUNCH_HOLE;
1175
1176         mode &= ~(VFS_FALLOCATE_FL_KEEP_SIZE|VFS_FALLOCATE_FL_PUNCH_HOLE);
1177         if (mode != 0) {
1178                 errno = ENOTSUP;
1179                 return -1;
1180         }
1181
1182         if (punch_hole) {
1183                 return glfs_discard(*(glfs_fd_t **)
1184                                     VFS_FETCH_FSP_EXTENSION(handle, fsp),
1185                                     offset, len);
1186         }
1187
1188         return glfs_fallocate(*(glfs_fd_t **)
1189                               VFS_FETCH_FSP_EXTENSION(handle, fsp),
1190                               keep_size, offset, len);
1191 #else
1192         errno = ENOTSUP;
1193         return -1;
1194 #endif
1195 }
1196
1197 static struct smb_filename *vfs_gluster_realpath(struct vfs_handle_struct *handle,
1198                                 TALLOC_CTX *ctx,
1199                                 const struct smb_filename *smb_fname)
1200 {
1201         char *result = NULL;
1202         struct smb_filename *result_fname = NULL;
1203         char *resolved_path = SMB_MALLOC_ARRAY(char, PATH_MAX+1);
1204
1205         if (resolved_path == NULL) {
1206                 errno = ENOMEM;
1207                 return NULL;
1208         }
1209
1210         result = glfs_realpath(handle->data,
1211                         smb_fname->base_name,
1212                         resolved_path);
1213         if (result != NULL) {
1214                 result_fname = synthetic_smb_fname(ctx, result, NULL, NULL, 0);
1215         }
1216
1217         SAFE_FREE(resolved_path);
1218         return result_fname;
1219 }
1220
1221 static bool vfs_gluster_lock(struct vfs_handle_struct *handle,
1222                              files_struct *fsp, int op, off_t offset,
1223                              off_t count, int type)
1224 {
1225         struct flock flock = { 0, };
1226         int ret;
1227
1228         flock.l_type = type;
1229         flock.l_whence = SEEK_SET;
1230         flock.l_start = offset;
1231         flock.l_len = count;
1232         flock.l_pid = 0;
1233
1234         ret = glfs_posix_lock(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), op, &flock);
1235
1236         if (op == F_GETLK) {
1237                 /* lock query, true if someone else has locked */
1238                 if ((ret != -1) &&
1239                     (flock.l_type != F_UNLCK) &&
1240                     (flock.l_pid != 0) && (flock.l_pid != getpid()))
1241                         return true;
1242                 /* not me */
1243                 return false;
1244         }
1245
1246         if (ret == -1) {
1247                 return false;
1248         }
1249
1250         return true;
1251 }
1252
1253 static int vfs_gluster_kernel_flock(struct vfs_handle_struct *handle,
1254                                     files_struct *fsp, uint32_t share_mode,
1255                                     uint32_t access_mask)
1256 {
1257         errno = ENOSYS;
1258         return -1;
1259 }
1260
1261 static int vfs_gluster_linux_setlease(struct vfs_handle_struct *handle,
1262                                       files_struct *fsp, int leasetype)
1263 {
1264         errno = ENOSYS;
1265         return -1;
1266 }
1267
1268 static bool vfs_gluster_getlock(struct vfs_handle_struct *handle,
1269                                 files_struct *fsp, off_t *poffset,
1270                                 off_t *pcount, int *ptype, pid_t *ppid)
1271 {
1272         struct flock flock = { 0, };
1273         int ret;
1274
1275         flock.l_type = *ptype;
1276         flock.l_whence = SEEK_SET;
1277         flock.l_start = *poffset;
1278         flock.l_len = *pcount;
1279         flock.l_pid = 0;
1280
1281         ret = glfs_posix_lock(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), F_GETLK, &flock);
1282
1283         if (ret == -1) {
1284                 return false;
1285         }
1286
1287         *ptype = flock.l_type;
1288         *poffset = flock.l_start;
1289         *pcount = flock.l_len;
1290         *ppid = flock.l_pid;
1291
1292         return true;
1293 }
1294
1295 static int vfs_gluster_symlink(struct vfs_handle_struct *handle,
1296                                 const char *link_target,
1297                                 const struct smb_filename *new_smb_fname)
1298 {
1299         return glfs_symlink(handle->data,
1300                         link_target,
1301                         new_smb_fname->base_name);
1302 }
1303
1304 static int vfs_gluster_readlink(struct vfs_handle_struct *handle,
1305                                 const struct smb_filename *smb_fname,
1306                                 char *buf,
1307                                 size_t bufsiz)
1308 {
1309         return glfs_readlink(handle->data, smb_fname->base_name, buf, bufsiz);
1310 }
1311
1312 static int vfs_gluster_link(struct vfs_handle_struct *handle,
1313                                 const struct smb_filename *old_smb_fname,
1314                                 const struct smb_filename *new_smb_fname)
1315 {
1316         return glfs_link(handle->data,
1317                         old_smb_fname->base_name,
1318                         new_smb_fname->base_name);
1319 }
1320
1321 static int vfs_gluster_mknod(struct vfs_handle_struct *handle,
1322                                 const struct smb_filename *smb_fname,
1323                                 mode_t mode,
1324                                 SMB_DEV_T dev)
1325 {
1326         return glfs_mknod(handle->data, smb_fname->base_name, mode, dev);
1327 }
1328
1329 static int vfs_gluster_chflags(struct vfs_handle_struct *handle,
1330                                 const struct smb_filename *smb_fname,
1331                                 unsigned int flags)
1332 {
1333         errno = ENOSYS;
1334         return -1;
1335 }
1336
1337 static int vfs_gluster_get_real_filename(struct vfs_handle_struct *handle,
1338                                          const char *path, const char *name,
1339                                          TALLOC_CTX *mem_ctx, char **found_name)
1340 {
1341         int ret;
1342         char key_buf[NAME_MAX + 64];
1343         char val_buf[NAME_MAX + 1];
1344
1345         if (strlen(name) >= NAME_MAX) {
1346                 errno = ENAMETOOLONG;
1347                 return -1;
1348         }
1349
1350         snprintf(key_buf, NAME_MAX + 64,
1351                  "glusterfs.get_real_filename:%s", name);
1352
1353         ret = glfs_getxattr(handle->data, path, key_buf, val_buf, NAME_MAX + 1);
1354         if (ret == -1) {
1355                 if (errno == ENODATA) {
1356                         errno = EOPNOTSUPP;
1357                 }
1358                 return -1;
1359         }
1360
1361         *found_name = talloc_strdup(mem_ctx, val_buf);
1362         if (found_name[0] == NULL) {
1363                 errno = ENOMEM;
1364                 return -1;
1365         }
1366         return 0;
1367 }
1368
1369 static const char *vfs_gluster_connectpath(struct vfs_handle_struct *handle,
1370                                 const struct smb_filename *smb_fname)
1371 {
1372         return handle->conn->connectpath;
1373 }
1374
1375 /* EA Operations */
1376
1377 static ssize_t vfs_gluster_getxattr(struct vfs_handle_struct *handle,
1378                                 const struct smb_filename *smb_fname,
1379                                 const char *name,
1380                                 void *value,
1381                                 size_t size)
1382 {
1383         return glfs_getxattr(handle->data, smb_fname->base_name,
1384                         name, value, size);
1385 }
1386
1387 static ssize_t vfs_gluster_fgetxattr(struct vfs_handle_struct *handle,
1388                                      files_struct *fsp, const char *name,
1389                                      void *value, size_t size)
1390 {
1391         return glfs_fgetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name, value, size);
1392 }
1393
1394 static ssize_t vfs_gluster_listxattr(struct vfs_handle_struct *handle,
1395                                 const struct smb_filename *smb_fname,
1396                                 char *list,
1397                                 size_t size)
1398 {
1399         return glfs_listxattr(handle->data, smb_fname->base_name, list, size);
1400 }
1401
1402 static ssize_t vfs_gluster_flistxattr(struct vfs_handle_struct *handle,
1403                                       files_struct *fsp, char *list,
1404                                       size_t size)
1405 {
1406         return glfs_flistxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), list, size);
1407 }
1408
1409 static int vfs_gluster_removexattr(struct vfs_handle_struct *handle,
1410                                 const struct smb_filename *smb_fname,
1411                                 const char *name)
1412 {
1413         return glfs_removexattr(handle->data, smb_fname->base_name, name);
1414 }
1415
1416 static int vfs_gluster_fremovexattr(struct vfs_handle_struct *handle,
1417                                     files_struct *fsp, const char *name)
1418 {
1419         return glfs_fremovexattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name);
1420 }
1421
1422 static int vfs_gluster_setxattr(struct vfs_handle_struct *handle,
1423                                 const struct smb_filename *smb_fname,
1424                                 const char *name,
1425                                 const void *value, size_t size, int flags)
1426 {
1427         return glfs_setxattr(handle->data, smb_fname->base_name, name, value, size, flags);
1428 }
1429
1430 static int vfs_gluster_fsetxattr(struct vfs_handle_struct *handle,
1431                                  files_struct *fsp, const char *name,
1432                                  const void *value, size_t size, int flags)
1433 {
1434         return glfs_fsetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name, value, size,
1435                               flags);
1436 }
1437
1438 /* AIO Operations */
1439
1440 static bool vfs_gluster_aio_force(struct vfs_handle_struct *handle,
1441                                   files_struct *fsp)
1442 {
1443         return false;
1444 }
1445
1446 static struct vfs_fn_pointers glusterfs_fns = {
1447
1448         /* Disk Operations */
1449
1450         .connect_fn = vfs_gluster_connect,
1451         .disconnect_fn = vfs_gluster_disconnect,
1452         .disk_free_fn = vfs_gluster_disk_free,
1453         .get_quota_fn = vfs_gluster_get_quota,
1454         .set_quota_fn = vfs_gluster_set_quota,
1455         .statvfs_fn = vfs_gluster_statvfs,
1456         .fs_capabilities_fn = vfs_gluster_fs_capabilities,
1457
1458         .get_dfs_referrals_fn = NULL,
1459
1460         /* Directory Operations */
1461
1462         .opendir_fn = vfs_gluster_opendir,
1463         .fdopendir_fn = vfs_gluster_fdopendir,
1464         .readdir_fn = vfs_gluster_readdir,
1465         .seekdir_fn = vfs_gluster_seekdir,
1466         .telldir_fn = vfs_gluster_telldir,
1467         .rewind_dir_fn = vfs_gluster_rewinddir,
1468         .mkdir_fn = vfs_gluster_mkdir,
1469         .rmdir_fn = vfs_gluster_rmdir,
1470         .closedir_fn = vfs_gluster_closedir,
1471
1472         /* File Operations */
1473
1474         .open_fn = vfs_gluster_open,
1475         .create_file_fn = NULL,
1476         .close_fn = vfs_gluster_close,
1477         .pread_fn = vfs_gluster_pread,
1478         .pread_send_fn = vfs_gluster_pread_send,
1479         .pread_recv_fn = vfs_gluster_recv,
1480         .pwrite_fn = vfs_gluster_pwrite,
1481         .pwrite_send_fn = vfs_gluster_pwrite_send,
1482         .pwrite_recv_fn = vfs_gluster_recv,
1483         .lseek_fn = vfs_gluster_lseek,
1484         .sendfile_fn = vfs_gluster_sendfile,
1485         .recvfile_fn = vfs_gluster_recvfile,
1486         .rename_fn = vfs_gluster_rename,
1487         .fsync_send_fn = vfs_gluster_fsync_send,
1488         .fsync_recv_fn = vfs_gluster_fsync_recv,
1489
1490         .stat_fn = vfs_gluster_stat,
1491         .fstat_fn = vfs_gluster_fstat,
1492         .lstat_fn = vfs_gluster_lstat,
1493         .get_alloc_size_fn = vfs_gluster_get_alloc_size,
1494         .unlink_fn = vfs_gluster_unlink,
1495
1496         .chmod_fn = vfs_gluster_chmod,
1497         .fchmod_fn = vfs_gluster_fchmod,
1498         .chown_fn = vfs_gluster_chown,
1499         .fchown_fn = vfs_gluster_fchown,
1500         .lchown_fn = vfs_gluster_lchown,
1501         .chdir_fn = vfs_gluster_chdir,
1502         .getwd_fn = vfs_gluster_getwd,
1503         .ntimes_fn = vfs_gluster_ntimes,
1504         .ftruncate_fn = vfs_gluster_ftruncate,
1505         .fallocate_fn = vfs_gluster_fallocate,
1506         .lock_fn = vfs_gluster_lock,
1507         .kernel_flock_fn = vfs_gluster_kernel_flock,
1508         .linux_setlease_fn = vfs_gluster_linux_setlease,
1509         .getlock_fn = vfs_gluster_getlock,
1510         .symlink_fn = vfs_gluster_symlink,
1511         .readlink_fn = vfs_gluster_readlink,
1512         .link_fn = vfs_gluster_link,
1513         .mknod_fn = vfs_gluster_mknod,
1514         .realpath_fn = vfs_gluster_realpath,
1515         .chflags_fn = vfs_gluster_chflags,
1516         .file_id_create_fn = NULL,
1517         .streaminfo_fn = NULL,
1518         .get_real_filename_fn = vfs_gluster_get_real_filename,
1519         .connectpath_fn = vfs_gluster_connectpath,
1520
1521         .brl_lock_windows_fn = NULL,
1522         .brl_unlock_windows_fn = NULL,
1523         .brl_cancel_windows_fn = NULL,
1524         .strict_lock_check_fn = NULL,
1525         .translate_name_fn = NULL,
1526         .fsctl_fn = NULL,
1527
1528         /* NT ACL Operations */
1529         .fget_nt_acl_fn = NULL,
1530         .get_nt_acl_fn = NULL,
1531         .fset_nt_acl_fn = NULL,
1532         .audit_file_fn = NULL,
1533
1534         /* Posix ACL Operations */
1535         .sys_acl_get_file_fn = posixacl_xattr_acl_get_file,
1536         .sys_acl_get_fd_fn = posixacl_xattr_acl_get_fd,
1537         .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
1538         .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
1539         .sys_acl_set_file_fn = posixacl_xattr_acl_set_file,
1540         .sys_acl_set_fd_fn = posixacl_xattr_acl_set_fd,
1541         .sys_acl_delete_def_file_fn = posixacl_xattr_acl_delete_def_file,
1542
1543         /* EA Operations */
1544         .getxattr_fn = vfs_gluster_getxattr,
1545         .fgetxattr_fn = vfs_gluster_fgetxattr,
1546         .listxattr_fn = vfs_gluster_listxattr,
1547         .flistxattr_fn = vfs_gluster_flistxattr,
1548         .removexattr_fn = vfs_gluster_removexattr,
1549         .fremovexattr_fn = vfs_gluster_fremovexattr,
1550         .setxattr_fn = vfs_gluster_setxattr,
1551         .fsetxattr_fn = vfs_gluster_fsetxattr,
1552
1553         /* AIO Operations */
1554         .aio_force_fn = vfs_gluster_aio_force,
1555
1556         /* Durable handle Operations */
1557         .durable_cookie_fn = NULL,
1558         .durable_disconnect_fn = NULL,
1559         .durable_reconnect_fn = NULL,
1560 };
1561
1562 static_decl_vfs;
1563 NTSTATUS vfs_glusterfs_init(TALLOC_CTX *ctx)
1564 {
1565         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1566                                 "glusterfs", &glusterfs_fns);
1567 }