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 #include "lib/pthreadpool/pthreadpool_tevent.h"
  49
  50 #define DEFAULT_VOLFILE_SERVER "localhost"
  51 #define GLUSTER_NAME_MAX 255
  52
  53 /**
  54  * Helper to convert struct stat to struct stat_ex.
  55  */
  56 static void smb_stat_ex_from_stat(struct stat_ex *dst, const struct stat *src)
  57 {
  58         ZERO_STRUCTP(dst);
  59
  60         dst->st_ex_dev = src->st_dev;
  61         dst->st_ex_ino = src->st_ino;
  62         dst->st_ex_mode = src->st_mode;
  63         dst->st_ex_nlink = src->st_nlink;
  64         dst->st_ex_uid = src->st_uid;
  65         dst->st_ex_gid = src->st_gid;
  66         dst->st_ex_rdev = src->st_rdev;
  67         dst->st_ex_size = src->st_size;
  68         dst->st_ex_atime.tv_sec = src->st_atime;
  69         dst->st_ex_mtime.tv_sec = src->st_mtime;
  70         dst->st_ex_ctime.tv_sec = src->st_ctime;
  71         dst->st_ex_btime.tv_sec = src->st_mtime;
  72         dst->st_ex_blksize = src->st_blksize;
  73         dst->st_ex_blocks = src->st_blocks;
  74         dst->st_ex_file_id = dst->st_ex_ino;
  75         dst->st_ex_iflags |= ST_EX_IFLAG_CALCULATED_FILE_ID;
  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         dst->st_ex_itime = dst->st_ex_btime;
  83         dst->st_ex_iflags |= ST_EX_IFLAG_CALCULATED_ITIME;
  84 }
  85
  86 /* pre-opened glfs_t */
  87
  88 static struct glfs_preopened {
  89         char *volume;
  90         char *connectpath;
  91         glfs_t *fs;
  92         int ref;
  93         struct glfs_preopened *next, *prev;
  94 } *glfs_preopened;
  95
  96
  97 static int glfs_set_preopened(const char *volume, const char *connectpath, glfs_t *fs)
  98 {
  99         struct glfs_preopened *entry = NULL;
 100
 101         entry = talloc_zero(NULL, struct glfs_preopened);
 102         if (!entry) {
 103                 errno = ENOMEM;
 104                 return -1;
 105         }
 106
 107         entry->volume = talloc_strdup(entry, volume);
 108         if (!entry->volume) {
 109                 talloc_free(entry);
 110                 errno = ENOMEM;
 111                 return -1;
 112         }
 113
 114         entry->connectpath = talloc_strdup(entry, connectpath);
 115         if (entry->connectpath == NULL) {
 116                 talloc_free(entry);
 117                 errno = ENOMEM;
 118                 return -1;
 119         }
 120
 121         entry->fs = fs;
 122         entry->ref = 1;
 123
 124         DLIST_ADD(glfs_preopened, entry);
 125
 126         return 0;
 127 }
 128
 129 static glfs_t *glfs_find_preopened(const char *volume, const char *connectpath)
 130 {
 131         struct glfs_preopened *entry = NULL;
 132
 133         for (entry = glfs_preopened; entry; entry = entry->next) {
 134                 if (strcmp(entry->volume, volume) == 0 &&
 135                     strcmp(entry->connectpath, connectpath) == 0)
 136                 {
 137                         entry->ref++;
 138                         return entry->fs;
 139                 }
 140         }
 141
 142         return NULL;
 143 }
 144
 145 static void glfs_clear_preopened(glfs_t *fs)
 146 {
 147         struct glfs_preopened *entry = NULL;
 148
 149         for (entry = glfs_preopened; entry; entry = entry->next) {
 150                 if (entry->fs == fs) {
 151                         if (--entry->ref)
 152                                 return;
 153
 154                         DLIST_REMOVE(glfs_preopened, entry);
 155
 156                         glfs_fini(entry->fs);
 157                         talloc_free(entry);
 158                 }
 159         }
 160 }
 161
 162 static int vfs_gluster_set_volfile_servers(glfs_t *fs,
 163                                            const char *volfile_servers)
 164 {
 165         char *server = NULL;
 166         size_t server_count = 0;
 167         size_t server_success = 0;
 168         int   ret = -1;
 169         TALLOC_CTX *frame = talloc_stackframe();
 170
 171         DBG_INFO("servers list %s\n", volfile_servers);
 172
 173         while (next_token_talloc(frame, &volfile_servers, &server, " \t")) {
 174                 char *transport = NULL;
 175                 char *host = NULL;
 176                 int   port = 0;
 177
 178                 server_count++;
 179                 DBG_INFO("server %zu %s\n", server_count, server);
 180
 181                 /* Determine the transport type */
 182                 if (strncmp(server, "unix+", 5) == 0) {
 183                         port = 0;
 184                         transport = talloc_strdup(frame, "unix");
 185                         if (!transport) {
 186                                 errno = ENOMEM;
 187                                 goto out;
 188                         }
 189                         host = talloc_strdup(frame, server + 5);
 190                         if (!host) {
 191                                 errno = ENOMEM;
 192                                 goto out;
 193                         }
 194                 } else {
 195                         char *p = NULL;
 196                         char *port_index = NULL;
 197
 198                         if (strncmp(server, "tcp+", 4) == 0) {
 199                                 server += 4;
 200                         }
 201
 202                         /* IPv6 is enclosed in []
 203                          * ':' before ']' is part of IPv6
 204                          * ':' after  ']' indicates port
 205                          */
 206                         p = server;
 207                         if (server[0] == '[') {
 208                                 server++;
 209                                 p = index(server, ']');
 210                                 if (p == NULL) {
 211                                         /* Malformed IPv6 */
 212                                         continue;
 213                                 }
 214                                 p[0] = '\0';
 215                                 p++;
 216                         }
 217
 218                         port_index = index(p, ':');
 219
 220                         if (port_index == NULL) {
 221                                 port = 0;
 222                         } else {
 223                                 port = atoi(port_index + 1);
 224                                 port_index[0] = '\0';
 225                         }
 226                         transport = talloc_strdup(frame, "tcp");
 227                         if (!transport) {
 228                                 errno = ENOMEM;
 229                                 goto out;
 230                         }
 231                         host = talloc_strdup(frame, server);
 232                         if (!host) {
 233                                 errno = ENOMEM;
 234                                 goto out;
 235                         }
 236                 }
 237
 238                 DBG_INFO("Calling set volfile server with params "
 239                          "transport=%s, host=%s, port=%d\n", transport,
 240                           host, port);
 241
 242                 ret = glfs_set_volfile_server(fs, transport, host, port);
 243                 if (ret < 0) {
 244                         DBG_WARNING("Failed to set volfile_server "
 245                                     "transport=%s, host=%s, port=%d (%s)\n",
 246                                     transport, host, port, strerror(errno));
 247                 } else {
 248                         server_success++;
 249                 }
 250         }
 251
 252 out:
 253         if (server_count == 0) {
 254                 ret = -1;
 255         } else if (server_success < server_count) {
 256                 DBG_WARNING("Failed to set %zu out of %zu servers parsed\n",
 257                             server_count - server_success, server_count);
 258                 ret = 0;
 259         }
 260
 261         TALLOC_FREE(frame);
 262         return ret;
 263 }
 264
 265 /* Disk Operations */
 266
 267 static int vfs_gluster_connect(struct vfs_handle_struct *handle,
 268                                const char *service,
 269                                const char *user)
 270 {
 271         const struct loadparm_substitution *lp_sub =
 272                 loadparm_s3_global_substitution();
 273         const char *volfile_servers;
 274         const char *volume;
 275         char *logfile;
 276         int loglevel;
 277         glfs_t *fs = NULL;
 278         TALLOC_CTX *tmp_ctx;
 279         int ret = 0;
 280
 281         tmp_ctx = talloc_new(NULL);
 282         if (tmp_ctx == NULL) {
 283                 ret = -1;
 284                 goto done;
 285         }
 286         logfile = lp_parm_substituted_string(tmp_ctx,
 287                                              lp_sub,
 288                                              SNUM(handle->conn),
 289                                              "glusterfs",
 290                                              "logfile",
 291                                              NULL);
 292
 293         loglevel = lp_parm_int(SNUM(handle->conn), "glusterfs", "loglevel", -1);
 294
 295         volfile_servers = lp_parm_substituted_string(tmp_ctx,
 296                                                      lp_sub,
 297                                                      SNUM(handle->conn),
 298                                                      "glusterfs",
 299                                                      "volfile_server",
 300                                                      NULL);
 301         if (volfile_servers == NULL) {
 302                 volfile_servers = DEFAULT_VOLFILE_SERVER;
 303         }
 304
 305         volume = lp_parm_const_string(SNUM(handle->conn), "glusterfs", "volume",
 306                                       NULL);
 307         if (volume == NULL) {
 308                 volume = service;
 309         }
 310
 311         fs = glfs_find_preopened(volume, handle->conn->connectpath);
 312         if (fs) {
 313                 goto done;
 314         }
 315
 316         fs = glfs_new(volume);
 317         if (fs == NULL) {
 318                 ret = -1;
 319                 goto done;
 320         }
 321
 322         ret = vfs_gluster_set_volfile_servers(fs, volfile_servers);
 323         if (ret < 0) {
 324                 DBG_ERR("Failed to set volfile_servers from list %s\n",
 325                         volfile_servers);
 326                 goto done;
 327         }
 328
 329         ret = glfs_set_xlator_option(fs, "*-md-cache", "cache-posix-acl",
 330                                      "true");
 331         if (ret < 0) {
 332                 DEBUG(0, ("%s: Failed to set xlator options\n", volume));
 333                 goto done;
 334         }
 335
 336         ret = glfs_set_xlator_option(fs, "*-md-cache", "cache-selinux",
 337                                      "true");
 338         if (ret < 0) {
 339                 DEBUG(0, ("%s: Failed to set xlator options\n", volume));
 340                 goto done;
 341         }
 342
 343         ret = glfs_set_xlator_option(fs, "*-snapview-client",
 344                                      "snapdir-entry-path",
 345                                      handle->conn->connectpath);
 346         if (ret < 0) {
 347                 DEBUG(0, ("%s: Failed to set xlator option:"
 348                           " snapdir-entry-path\n", volume));
 349                 goto done;
 350         }
 351
 352         ret = glfs_set_logging(fs, logfile, loglevel);
 353         if (ret < 0) {
 354                 DEBUG(0, ("%s: Failed to set logfile %s loglevel %d\n",
 355                           volume, logfile, loglevel));
 356                 goto done;
 357         }
 358
 359         ret = glfs_init(fs);
 360         if (ret < 0) {
 361                 DEBUG(0, ("%s: Failed to initialize volume (%s)\n",
 362                           volume, strerror(errno)));
 363                 goto done;
 364         }
 365
 366         ret = glfs_set_preopened(volume, handle->conn->connectpath, fs);
 367         if (ret < 0) {
 368                 DEBUG(0, ("%s: Failed to register volume (%s)\n",
 369                           volume, strerror(errno)));
 370                 goto done;
 371         }
 372
 373         /*
 374          * The shadow_copy2 module will fail to export subdirectories
 375          * of a gluster volume unless we specify the mount point,
 376          * because the detection fails if the file system is not
 377          * locally mounted:
 378          * https://bugzilla.samba.org/show_bug.cgi?id=13091
 379          */
 380         lp_do_parameter(SNUM(handle->conn), "shadow:mountpoint", "/");
 381
 382         /*
 383          * Unless we have an async implementation of getxattrat turn this off.
 384          */
 385         lp_do_parameter(SNUM(handle->conn), "smbd async dosmode", "false");
 386
 387 done:
 388         if (ret < 0) {
 389                 if (fs)
 390                         glfs_fini(fs);
 391         } else {
 392                 DBG_ERR("%s: Initialized volume from servers %s\n",
 393                         volume, volfile_servers);
 394                 handle->data = fs;
 395         }
 396         talloc_free(tmp_ctx);
 397         return ret;
 398 }
 399
 400 static void vfs_gluster_disconnect(struct vfs_handle_struct *handle)
 401 {
 402         glfs_t *fs = NULL;
 403
 404         fs = handle->data;
 405
 406         glfs_clear_preopened(fs);
 407 }
 408
 409 static uint64_t vfs_gluster_disk_free(struct vfs_handle_struct *handle,
 410                                 const struct smb_filename *smb_fname,
 411                                 uint64_t *bsize_p,
 412                                 uint64_t *dfree_p,
 413                                 uint64_t *dsize_p)
 414 {
 415         struct statvfs statvfs = { 0, };
 416         int ret;
 417
 418         ret = glfs_statvfs(handle->data, smb_fname->base_name, &statvfs);
 419         if (ret < 0) {
 420                 return -1;
 421         }
 422
 423         if (bsize_p != NULL) {
 424                 *bsize_p = (uint64_t)statvfs.f_bsize; /* Block size */
 425         }
 426         if (dfree_p != NULL) {
 427                 *dfree_p = (uint64_t)statvfs.f_bavail; /* Available Block units */
 428         }
 429         if (dsize_p != NULL) {
 430                 *dsize_p = (uint64_t)statvfs.f_blocks; /* Total Block units */
 431         }
 432
 433         return (uint64_t)statvfs.f_bavail;
 434 }
 435
 436 static int vfs_gluster_get_quota(struct vfs_handle_struct *handle,
 437                                 const struct smb_filename *smb_fname,
 438                                 enum SMB_QUOTA_TYPE qtype,
 439                                 unid_t id,
 440                                 SMB_DISK_QUOTA *qt)
 441 {
 442         errno = ENOSYS;
 443         return -1;
 444 }
 445
 446 static int
 447 vfs_gluster_set_quota(struct vfs_handle_struct *handle,
 448                       enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
 449 {
 450         errno = ENOSYS;
 451         return -1;
 452 }
 453
 454 static int vfs_gluster_statvfs(struct vfs_handle_struct *handle,
 455                                 const struct smb_filename *smb_fname,
 456                                 struct vfs_statvfs_struct *vfs_statvfs)
 457 {
 458         struct statvfs statvfs = { 0, };
 459         int ret;
 460
 461         ret = glfs_statvfs(handle->data, smb_fname->base_name, &statvfs);
 462         if (ret < 0) {
 463                 DEBUG(0, ("glfs_statvfs(%s) failed: %s\n",
 464                           smb_fname->base_name, strerror(errno)));
 465                 return -1;
 466         }
 467
 468         ZERO_STRUCTP(vfs_statvfs);
 469
 470         vfs_statvfs->OptimalTransferSize = statvfs.f_frsize;
 471         vfs_statvfs->BlockSize = statvfs.f_bsize;
 472         vfs_statvfs->TotalBlocks = statvfs.f_blocks;
 473         vfs_statvfs->BlocksAvail = statvfs.f_bfree;
 474         vfs_statvfs->UserBlocksAvail = statvfs.f_bavail;
 475         vfs_statvfs->TotalFileNodes = statvfs.f_files;
 476         vfs_statvfs->FreeFileNodes = statvfs.f_ffree;
 477         vfs_statvfs->FsIdentifier = statvfs.f_fsid;
 478         vfs_statvfs->FsCapabilities =
 479             FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
 480
 481         return ret;
 482 }
 483
 484 static uint32_t vfs_gluster_fs_capabilities(struct vfs_handle_struct *handle,
 485                                             enum timestamp_set_resolution *p_ts_res)
 486 {
 487         uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
 488
 489 #ifdef HAVE_GFAPI_VER_6
 490         caps |= FILE_SUPPORTS_SPARSE_FILES;
 491 #endif
 492
 493 #ifdef STAT_HAVE_NSEC
 494         *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
 495 #endif
 496
 497         return caps;
 498 }
 499
 500 static glfs_fd_t *vfs_gluster_fetch_glfd(struct vfs_handle_struct *handle,
 501                                          files_struct *fsp)
 502 {
 503         glfs_fd_t **glfd = (glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
 504         if (glfd == NULL) {
 505                 DBG_INFO("Failed to fetch fsp extension\n");
 506                 return NULL;
 507         }
 508         if (*glfd == NULL) {
 509                 DBG_INFO("Empty glfs_fd_t pointer\n");
 510                 return NULL;
 511         }
 512
 513         return *glfd;
 514 }
 515
 516 static DIR *vfs_gluster_fdopendir(struct vfs_handle_struct *handle,
 517                                   files_struct *fsp, const char *mask,
 518                                   uint32_t attributes)
 519 {
 520         glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
 521         if (glfd == NULL) {
 522                 DBG_ERR("Failed to fetch gluster fd\n");
 523                 return NULL;
 524         }
 525
 526         return (DIR *)glfd;
 527 }
 528
 529 static int vfs_gluster_closedir(struct vfs_handle_struct *handle, DIR *dirp)
 530 {
 531         int ret;
 532
 533         START_PROFILE(syscall_closedir);
 534         ret = glfs_closedir((void *)dirp);
 535         END_PROFILE(syscall_closedir);
 536
 537         return ret;
 538 }
 539
 540 static struct dirent *vfs_gluster_readdir(struct vfs_handle_struct *handle,
 541                                           DIR *dirp, SMB_STRUCT_STAT *sbuf)
 542 {
 543         static char direntbuf[512];
 544         int ret;
 545         struct stat stat;
 546         struct dirent *dirent = 0;
 547
 548         START_PROFILE(syscall_readdir);
 549         if (sbuf != NULL) {
 550                 ret = glfs_readdirplus_r((void *)dirp, &stat, (void *)direntbuf,
 551                                          &dirent);
 552         } else {
 553                 ret = glfs_readdir_r((void *)dirp, (void *)direntbuf, &dirent);
 554         }
 555
 556         if ((ret < 0) || (dirent == NULL)) {
 557                 END_PROFILE(syscall_readdir);
 558                 return NULL;
 559         }
 560
 561         if (sbuf != NULL) {
 562                 SET_STAT_INVALID(*sbuf);
 563                 if (!S_ISLNK(stat.st_mode)) {
 564                         smb_stat_ex_from_stat(sbuf, &stat);
 565                 }
 566         }
 567
 568         END_PROFILE(syscall_readdir);
 569         return dirent;
 570 }
 571
 572 static long vfs_gluster_telldir(struct vfs_handle_struct *handle, DIR *dirp)
 573 {
 574         long ret;
 575
 576         START_PROFILE(syscall_telldir);
 577         ret = glfs_telldir((void *)dirp);
 578         END_PROFILE(syscall_telldir);
 579
 580         return ret;
 581 }
 582
 583 static void vfs_gluster_seekdir(struct vfs_handle_struct *handle, DIR *dirp,
 584                                 long offset)
 585 {
 586         START_PROFILE(syscall_seekdir);
 587         glfs_seekdir((void *)dirp, offset);
 588         END_PROFILE(syscall_seekdir);
 589 }
 590
 591 static void vfs_gluster_rewinddir(struct vfs_handle_struct *handle, DIR *dirp)
 592 {
 593         START_PROFILE(syscall_rewinddir);
 594         glfs_seekdir((void *)dirp, 0);
 595         END_PROFILE(syscall_rewinddir);
 596 }
 597
 598 static int vfs_gluster_mkdirat(struct vfs_handle_struct *handle,
 599                         struct files_struct *dirfsp,
 600                         const struct smb_filename *smb_fname,
 601                         mode_t mode)
 602 {
 603         int ret;
 604
 605         START_PROFILE(syscall_mkdirat);
 606         SMB_ASSERT(dirfsp == dirfsp->conn->cwd_fsp);
 607         ret = glfs_mkdir(handle->data, smb_fname->base_name, mode);
 608         END_PROFILE(syscall_mkdirat);
 609
 610         return ret;
 611 }
 612
 613 static int vfs_gluster_openat(struct vfs_handle_struct *handle,
 614                               const struct files_struct *dirfsp,
 615                               const struct smb_filename *smb_fname,
 616                               files_struct *fsp,
 617                               int flags,
 618                               mode_t mode)
 619 {
 620         glfs_fd_t *glfd;
 621         glfs_fd_t **p_tmp;
 622
 623         START_PROFILE(syscall_openat);
 624
 625         /*
 626          * Looks like glfs API doesn't have openat().
 627          */
 628         SMB_ASSERT(dirfsp->fh->fd == AT_FDCWD);
 629
 630         p_tmp = VFS_ADD_FSP_EXTENSION(handle, fsp, glfs_fd_t *, NULL);
 631         if (p_tmp == NULL) {
 632                 END_PROFILE(syscall_openat);
 633                 errno = ENOMEM;
 634                 return -1;
 635         }
 636
 637         if (flags & O_DIRECTORY) {
 638                 glfd = glfs_opendir(handle->data, smb_fname->base_name);
 639         } else if (flags & O_CREAT) {
 640                 glfd = glfs_creat(handle->data, smb_fname->base_name, flags,
 641                                   mode);
 642         } else {
 643                 glfd = glfs_open(handle->data, smb_fname->base_name, flags);
 644         }
 645
 646         if (glfd == NULL) {
 647                 END_PROFILE(syscall_openat);
 648                 /* no extension destroy_fn, so no need to save errno */
 649                 VFS_REMOVE_FSP_EXTENSION(handle, fsp);
 650                 return -1;
 651         }
 652
 653         *p_tmp = glfd;
 654
 655         END_PROFILE(syscall_openat);
 656         /* An arbitrary value for error reporting, so you know its us. */
 657         return 13371337;
 658 }
 659
 660 static int vfs_gluster_close(struct vfs_handle_struct *handle,
 661                              files_struct *fsp)
 662 {
 663         int ret;
 664         glfs_fd_t *glfd = NULL;
 665
 666         START_PROFILE(syscall_close);
 667
 668         glfd = vfs_gluster_fetch_glfd(handle, fsp);
 669         if (glfd == NULL) {
 670                 END_PROFILE(syscall_close);
 671                 DBG_ERR("Failed to fetch gluster fd\n");
 672                 return -1;
 673         }
 674
 675         VFS_REMOVE_FSP_EXTENSION(handle, fsp);
 676
 677         ret = glfs_close(glfd);
 678         END_PROFILE(syscall_close);
 679
 680         return ret;
 681 }
 682
 683 static ssize_t vfs_gluster_pread(struct vfs_handle_struct *handle,
 684                                  files_struct *fsp, void *data, size_t n,
 685                                  off_t offset)
 686 {
 687         ssize_t ret;
 688         glfs_fd_t *glfd = NULL;
 689
 690         START_PROFILE_BYTES(syscall_pread, n);
 691
 692         glfd = vfs_gluster_fetch_glfd(handle, fsp);
 693         if (glfd == NULL) {
 694                 END_PROFILE_BYTES(syscall_pread);
 695                 DBG_ERR("Failed to fetch gluster fd\n");
 696                 return -1;
 697         }
 698
 699 #ifdef HAVE_GFAPI_VER_7_6
 700         ret = glfs_pread(glfd, data, n, offset, 0, NULL);
 701 #else
 702         ret = glfs_pread(glfd, data, n, offset, 0);
 703 #endif
 704         END_PROFILE_BYTES(syscall_pread);
 705
 706         return ret;
 707 }
 708
 709 struct vfs_gluster_pread_state {
 710         ssize_t ret;
 711         glfs_fd_t *fd;
 712         void *buf;
 713         size_t count;
 714         off_t offset;
 715
 716         struct vfs_aio_state vfs_aio_state;
 717         SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
 718 };
 719
 720 static void vfs_gluster_pread_do(void *private_data);
 721 static void vfs_gluster_pread_done(struct tevent_req *subreq);
 722 static int vfs_gluster_pread_state_destructor(struct vfs_gluster_pread_state *state);
 723
 724 static struct tevent_req *vfs_gluster_pread_send(struct vfs_handle_struct
 725                                                   *handle, TALLOC_CTX *mem_ctx,
 726                                                   struct tevent_context *ev,
 727                                                   files_struct *fsp,
 728                                                   void *data, size_t n,
 729                                                   off_t offset)
 730 {
 731         struct vfs_gluster_pread_state *state;
 732         struct tevent_req *req, *subreq;
 733
 734         glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
 735         if (glfd == NULL) {
 736                 DBG_ERR("Failed to fetch gluster fd\n");
 737                 return NULL;
 738         }
 739
 740         req = tevent_req_create(mem_ctx, &state, struct vfs_gluster_pread_state);
 741         if (req == NULL) {
 742                 return NULL;
 743         }
 744
 745         state->ret = -1;
 746         state->fd = glfd;
 747         state->buf = data;
 748         state->count = n;
 749         state->offset = offset;
 750
 751         SMBPROFILE_BYTES_ASYNC_START(syscall_asys_pread, profile_p,
 752                                      state->profile_bytes, n);
 753         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
 754
 755         subreq = pthreadpool_tevent_job_send(
 756                 state, ev, handle->conn->sconn->pool,
 757                 vfs_gluster_pread_do, state);
 758         if (tevent_req_nomem(subreq, req)) {
 759                 return tevent_req_post(req, ev);
 760         }
 761         tevent_req_set_callback(subreq, vfs_gluster_pread_done, req);
 762
 763         talloc_set_destructor(state, vfs_gluster_pread_state_destructor);
 764
 765         return req;
 766 }
 767
 768 static void vfs_gluster_pread_do(void *private_data)
 769 {
 770         struct vfs_gluster_pread_state *state = talloc_get_type_abort(
 771                 private_data, struct vfs_gluster_pread_state);
 772         struct timespec start_time;
 773         struct timespec end_time;
 774
 775         SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
 776
 777         PROFILE_TIMESTAMP(&start_time);
 778
 779         do {
 780 #ifdef HAVE_GFAPI_VER_7_6
 781                 state->ret = glfs_pread(state->fd, state->buf, state->count,
 782                                         state->offset, 0, NULL);
 783 #else
 784                 state->ret = glfs_pread(state->fd, state->buf, state->count,
 785                                         state->offset, 0);
 786 #endif
 787         } while ((state->ret == -1) && (errno == EINTR));
 788
 789         if (state->ret == -1) {
 790                 state->vfs_aio_state.error = errno;
 791         }
 792
 793         PROFILE_TIMESTAMP(&end_time);
 794
 795         state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
 796
 797         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
 798 }
 799
 800 static int vfs_gluster_pread_state_destructor(struct vfs_gluster_pread_state *state)
 801 {
 802         return -1;
 803 }
 804
 805 static void vfs_gluster_pread_done(struct tevent_req *subreq)
 806 {
 807         struct tevent_req *req = tevent_req_callback_data(
 808                 subreq, struct tevent_req);
 809         struct vfs_gluster_pread_state *state = tevent_req_data(
 810                 req, struct vfs_gluster_pread_state);
 811         int ret;
 812
 813         ret = pthreadpool_tevent_job_recv(subreq);
 814         TALLOC_FREE(subreq);
 815         SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
 816         talloc_set_destructor(state, NULL);
 817         if (ret != 0) {
 818                 if (ret != EAGAIN) {
 819                         tevent_req_error(req, ret);
 820                         return;
 821                 }
 822                 /*
 823                  * If we get EAGAIN from pthreadpool_tevent_job_recv() this
 824                  * means the lower level pthreadpool failed to create a new
 825                  * thread. Fallback to sync processing in that case to allow
 826                  * some progress for the client.
 827                  */
 828                 vfs_gluster_pread_do(state);
 829         }
 830
 831         tevent_req_done(req);
 832 }
 833
 834 static ssize_t vfs_gluster_pread_recv(struct tevent_req *req,
 835                                       struct vfs_aio_state *vfs_aio_state)
 836 {
 837         struct vfs_gluster_pread_state *state = tevent_req_data(
 838                 req, struct vfs_gluster_pread_state);
 839
 840         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
 841                 return -1;
 842         }
 843
 844         *vfs_aio_state = state->vfs_aio_state;
 845         return state->ret;
 846 }
 847
 848 struct vfs_gluster_pwrite_state {
 849         ssize_t ret;
 850         glfs_fd_t *fd;
 851         const void *buf;
 852         size_t count;
 853         off_t offset;
 854
 855         struct vfs_aio_state vfs_aio_state;
 856         SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
 857 };
 858
 859 static void vfs_gluster_pwrite_do(void *private_data);
 860 static void vfs_gluster_pwrite_done(struct tevent_req *subreq);
 861 static int vfs_gluster_pwrite_state_destructor(struct vfs_gluster_pwrite_state *state);
 862
 863 static struct tevent_req *vfs_gluster_pwrite_send(struct vfs_handle_struct
 864                                                   *handle, TALLOC_CTX *mem_ctx,
 865                                                   struct tevent_context *ev,
 866                                                   files_struct *fsp,
 867                                                   const void *data, size_t n,
 868                                                   off_t offset)
 869 {
 870         struct tevent_req *req, *subreq;
 871         struct vfs_gluster_pwrite_state *state;
 872
 873         glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
 874         if (glfd == NULL) {
 875                 DBG_ERR("Failed to fetch gluster fd\n");
 876                 return NULL;
 877         }
 878
 879         req = tevent_req_create(mem_ctx, &state, struct vfs_gluster_pwrite_state);
 880         if (req == NULL) {
 881                 return NULL;
 882         }
 883
 884         state->ret = -1;
 885         state->fd = glfd;
 886         state->buf = data;
 887         state->count = n;
 888         state->offset = offset;
 889
 890         SMBPROFILE_BYTES_ASYNC_START(syscall_asys_pwrite, profile_p,
 891                                      state->profile_bytes, n);
 892         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
 893
 894         subreq = pthreadpool_tevent_job_send(
 895                 state, ev, handle->conn->sconn->pool,
 896                 vfs_gluster_pwrite_do, state);
 897         if (tevent_req_nomem(subreq, req)) {
 898                 return tevent_req_post(req, ev);
 899         }
 900         tevent_req_set_callback(subreq, vfs_gluster_pwrite_done, req);
 901
 902         talloc_set_destructor(state, vfs_gluster_pwrite_state_destructor);
 903
 904         return req;
 905 }
 906
 907 static void vfs_gluster_pwrite_do(void *private_data)
 908 {
 909         struct vfs_gluster_pwrite_state *state = talloc_get_type_abort(
 910                 private_data, struct vfs_gluster_pwrite_state);
 911         struct timespec start_time;
 912         struct timespec end_time;
 913
 914         SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
 915
 916         PROFILE_TIMESTAMP(&start_time);
 917
 918         do {
 919 #ifdef HAVE_GFAPI_VER_7_6
 920                 state->ret = glfs_pwrite(state->fd, state->buf, state->count,
 921                                          state->offset, 0, NULL, NULL);
 922 #else
 923                 state->ret = glfs_pwrite(state->fd, state->buf, state->count,
 924                                          state->offset, 0);
 925 #endif
 926         } while ((state->ret == -1) && (errno == EINTR));
 927
 928         if (state->ret == -1) {
 929                 state->vfs_aio_state.error = errno;
 930         }
 931
 932         PROFILE_TIMESTAMP(&end_time);
 933
 934         state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
 935
 936         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
 937 }
 938
 939 static int vfs_gluster_pwrite_state_destructor(struct vfs_gluster_pwrite_state *state)
 940 {
 941         return -1;
 942 }
 943
 944 static void vfs_gluster_pwrite_done(struct tevent_req *subreq)
 945 {
 946         struct tevent_req *req = tevent_req_callback_data(
 947                 subreq, struct tevent_req);
 948         struct vfs_gluster_pwrite_state *state = tevent_req_data(
 949                 req, struct vfs_gluster_pwrite_state);
 950         int ret;
 951
 952         ret = pthreadpool_tevent_job_recv(subreq);
 953         TALLOC_FREE(subreq);
 954         SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
 955         talloc_set_destructor(state, NULL);
 956         if (ret != 0) {
 957                 if (ret != EAGAIN) {
 958                         tevent_req_error(req, ret);
 959                         return;
 960                 }
 961                 /*
 962                  * If we get EAGAIN from pthreadpool_tevent_job_recv() this
 963                  * means the lower level pthreadpool failed to create a new
 964                  * thread. Fallback to sync processing in that case to allow
 965                  * some progress for the client.
 966                  */
 967                 vfs_gluster_pwrite_do(state);
 968         }
 969
 970         tevent_req_done(req);
 971 }
 972
 973 static ssize_t vfs_gluster_pwrite_recv(struct tevent_req *req,
 974                                        struct vfs_aio_state *vfs_aio_state)
 975 {
 976         struct vfs_gluster_pwrite_state *state = tevent_req_data(
 977                 req, struct vfs_gluster_pwrite_state);
 978
 979         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
 980                 return -1;
 981         }
 982
 983         *vfs_aio_state = state->vfs_aio_state;
 984
 985         return state->ret;
 986 }
 987
 988 static ssize_t vfs_gluster_pwrite(struct vfs_handle_struct *handle,
 989                                   files_struct *fsp, const void *data,
 990                                   size_t n, off_t offset)
 991 {
 992         ssize_t ret;
 993         glfs_fd_t *glfd = NULL;
 994
 995         START_PROFILE_BYTES(syscall_pwrite, n);
 996
 997         glfd = vfs_gluster_fetch_glfd(handle, fsp);
 998         if (glfd == NULL) {
 999                 END_PROFILE_BYTES(syscall_pwrite);
1000                 DBG_ERR("Failed to fetch gluster fd\n");
1001                 return -1;
1002         }
1003
1004 #ifdef HAVE_GFAPI_VER_7_6
1005         ret = glfs_pwrite(glfd, data, n, offset, 0, NULL, NULL);
1006 #else
1007         ret = glfs_pwrite(glfd, data, n, offset, 0);
1008 #endif
1009         END_PROFILE_BYTES(syscall_pwrite);
1010
1011         return ret;
1012 }
1013
1014 static off_t vfs_gluster_lseek(struct vfs_handle_struct *handle,
1015                                files_struct *fsp, off_t offset, int whence)
1016 {
1017         off_t ret = 0;
1018         glfs_fd_t *glfd = NULL;
1019
1020         START_PROFILE(syscall_lseek);
1021
1022         glfd = vfs_gluster_fetch_glfd(handle, fsp);
1023         if (glfd == NULL) {
1024                 END_PROFILE(syscall_lseek);
1025                 DBG_ERR("Failed to fetch gluster fd\n");
1026                 return -1;
1027         }
1028
1029         ret = glfs_lseek(glfd, offset, whence);
1030         END_PROFILE(syscall_lseek);
1031
1032         return ret;
1033 }
1034
1035 static ssize_t vfs_gluster_sendfile(struct vfs_handle_struct *handle, int tofd,
1036                                     files_struct *fromfsp,
1037                                     const DATA_BLOB *hdr,
1038                                     off_t offset, size_t n)
1039 {
1040         errno = ENOTSUP;
1041         return -1;
1042 }
1043
1044 static ssize_t vfs_gluster_recvfile(struct vfs_handle_struct *handle,
1045                                     int fromfd, files_struct *tofsp,
1046                                     off_t offset, size_t n)
1047 {
1048         errno = ENOTSUP;
1049         return -1;
1050 }
1051
1052 static int vfs_gluster_renameat(struct vfs_handle_struct *handle,
1053                         files_struct *srcfsp,
1054                         const struct smb_filename *smb_fname_src,
1055                         files_struct *dstfsp,
1056                         const struct smb_filename *smb_fname_dst)
1057 {
1058         int ret;
1059
1060         START_PROFILE(syscall_renameat);
1061         ret = glfs_rename(handle->data, smb_fname_src->base_name,
1062                           smb_fname_dst->base_name);
1063         END_PROFILE(syscall_renameat);
1064
1065         return ret;
1066 }
1067
1068 struct vfs_gluster_fsync_state {
1069         ssize_t ret;
1070         glfs_fd_t *fd;
1071
1072         struct vfs_aio_state vfs_aio_state;
1073         SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
1074 };
1075
1076 static void vfs_gluster_fsync_do(void *private_data);
1077 static void vfs_gluster_fsync_done(struct tevent_req *subreq);
1078 static int vfs_gluster_fsync_state_destructor(struct vfs_gluster_fsync_state *state);
1079
1080 static struct tevent_req *vfs_gluster_fsync_send(struct vfs_handle_struct
1081                                                  *handle, TALLOC_CTX *mem_ctx,
1082                                                  struct tevent_context *ev,
1083                                                  files_struct *fsp)
1084 {
1085         struct tevent_req *req, *subreq;
1086         struct vfs_gluster_fsync_state *state;
1087
1088         glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
1089         if (glfd == NULL) {
1090                 DBG_ERR("Failed to fetch gluster fd\n");
1091                 return NULL;
1092         }
1093
1094         req = tevent_req_create(mem_ctx, &state, struct vfs_gluster_fsync_state);
1095         if (req == NULL) {
1096                 return NULL;
1097         }
1098
1099         state->ret = -1;
1100         state->fd = glfd;
1101
1102         SMBPROFILE_BYTES_ASYNC_START(syscall_asys_fsync, profile_p,
1103                                      state->profile_bytes, 0);
1104         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
1105
1106         subreq = pthreadpool_tevent_job_send(
1107                 state, ev, handle->conn->sconn->pool, vfs_gluster_fsync_do, state);
1108         if (tevent_req_nomem(subreq, req)) {
1109                 return tevent_req_post(req, ev);
1110         }
1111         tevent_req_set_callback(subreq, vfs_gluster_fsync_done, req);
1112
1113         talloc_set_destructor(state, vfs_gluster_fsync_state_destructor);
1114
1115         return req;
1116 }
1117
1118 static void vfs_gluster_fsync_do(void *private_data)
1119 {
1120         struct vfs_gluster_fsync_state *state = talloc_get_type_abort(
1121                 private_data, struct vfs_gluster_fsync_state);
1122         struct timespec start_time;
1123         struct timespec end_time;
1124
1125         SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
1126
1127         PROFILE_TIMESTAMP(&start_time);
1128
1129         do {
1130 #ifdef HAVE_GFAPI_VER_7_6
1131                 state->ret = glfs_fsync(state->fd, NULL, NULL);
1132 #else
1133                 state->ret = glfs_fsync(state->fd);
1134 #endif
1135         } while ((state->ret == -1) && (errno == EINTR));
1136
1137         if (state->ret == -1) {
1138                 state->vfs_aio_state.error = errno;
1139         }
1140
1141         PROFILE_TIMESTAMP(&end_time);
1142
1143         state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
1144
1145         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
1146 }
1147
1148 static int vfs_gluster_fsync_state_destructor(struct vfs_gluster_fsync_state *state)
1149 {
1150         return -1;
1151 }
1152
1153 static void vfs_gluster_fsync_done(struct tevent_req *subreq)
1154 {
1155         struct tevent_req *req = tevent_req_callback_data(
1156                 subreq, struct tevent_req);
1157         struct vfs_gluster_fsync_state *state = tevent_req_data(
1158                 req, struct vfs_gluster_fsync_state);
1159         int ret;
1160
1161         ret = pthreadpool_tevent_job_recv(subreq);
1162         TALLOC_FREE(subreq);
1163         SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
1164         talloc_set_destructor(state, NULL);
1165         if (ret != 0) {
1166                 if (ret != EAGAIN) {
1167                         tevent_req_error(req, ret);
1168                         return;
1169                 }
1170                 /*
1171                  * If we get EAGAIN from pthreadpool_tevent_job_recv() this
1172                  * means the lower level pthreadpool failed to create a new
1173                  * thread. Fallback to sync processing in that case to allow
1174                  * some progress for the client.
1175                  */
1176                 vfs_gluster_fsync_do(state);
1177         }
1178
1179         tevent_req_done(req);
1180 }
1181
1182 static int vfs_gluster_fsync_recv(struct tevent_req *req,
1183                                   struct vfs_aio_state *vfs_aio_state)
1184 {
1185         struct vfs_gluster_fsync_state *state = tevent_req_data(
1186                 req, struct vfs_gluster_fsync_state);
1187
1188         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1189                 return -1;
1190         }
1191
1192         *vfs_aio_state = state->vfs_aio_state;
1193         return state->ret;
1194 }
1195
1196 static int vfs_gluster_stat(struct vfs_handle_struct *handle,
1197                             struct smb_filename *smb_fname)
1198 {
1199         struct stat st;
1200         int ret;
1201
1202         START_PROFILE(syscall_stat);
1203         ret = glfs_stat(handle->data, smb_fname->base_name, &st);
1204         if (ret == 0) {
1205                 smb_stat_ex_from_stat(&smb_fname->st, &st);
1206         }
1207         if (ret < 0 && errno != ENOENT) {
1208                 DEBUG(0, ("glfs_stat(%s) failed: %s\n",
1209                           smb_fname->base_name, strerror(errno)));
1210         }
1211         END_PROFILE(syscall_stat);
1212
1213         return ret;
1214 }
1215
1216 static int vfs_gluster_fstat(struct vfs_handle_struct *handle,
1217                              files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1218 {
1219         struct stat st;
1220         int ret;
1221         glfs_fd_t *glfd = NULL;
1222
1223         START_PROFILE(syscall_fstat);
1224
1225         glfd = vfs_gluster_fetch_glfd(handle, fsp);
1226         if (glfd == NULL) {
1227                 END_PROFILE(syscall_fstat);
1228                 DBG_ERR("Failed to fetch gluster fd\n");
1229                 return -1;
1230         }
1231
1232         ret = glfs_fstat(glfd, &st);
1233         if (ret == 0) {
1234                 smb_stat_ex_from_stat(sbuf, &st);
1235         }
1236         if (ret < 0) {
1237                 DEBUG(0, ("glfs_fstat(%d) failed: %s\n",
1238                           fsp->fh->fd, strerror(errno)));
1239         }
1240         END_PROFILE(syscall_fstat);
1241
1242         return ret;
1243 }
1244
1245 static int vfs_gluster_lstat(struct vfs_handle_struct *handle,
1246                              struct smb_filename *smb_fname)
1247 {
1248         struct stat st;
1249         int ret;
1250
1251         START_PROFILE(syscall_lstat);
1252         ret = glfs_lstat(handle->data, smb_fname->base_name, &st);
1253         if (ret == 0) {
1254                 smb_stat_ex_from_stat(&smb_fname->st, &st);
1255         }
1256         if (ret < 0 && errno != ENOENT) {
1257                 DEBUG(0, ("glfs_lstat(%s) failed: %s\n",
1258                           smb_fname->base_name, strerror(errno)));
1259         }
1260         END_PROFILE(syscall_lstat);
1261
1262         return ret;
1263 }
1264
1265 static uint64_t vfs_gluster_get_alloc_size(struct vfs_handle_struct *handle,
1266                                            files_struct *fsp,
1267                                            const SMB_STRUCT_STAT *sbuf)
1268 {
1269         uint64_t ret;
1270
1271         START_PROFILE(syscall_get_alloc_size);
1272         ret = sbuf->st_ex_blocks * 512;
1273         END_PROFILE(syscall_get_alloc_size);
1274
1275         return ret;
1276 }
1277
1278 static int vfs_gluster_unlinkat(struct vfs_handle_struct *handle,
1279                         struct files_struct *dirfsp,
1280                         const struct smb_filename *smb_fname,
1281                         int flags)
1282 {
1283         int ret;
1284
1285         START_PROFILE(syscall_unlinkat);
1286         SMB_ASSERT(dirfsp == dirfsp->conn->cwd_fsp);
1287         if (flags & AT_REMOVEDIR) {
1288                 ret = glfs_rmdir(handle->data, smb_fname->base_name);
1289         } else {
1290                 ret = glfs_unlink(handle->data, smb_fname->base_name);
1291         }
1292         END_PROFILE(syscall_unlinkat);
1293
1294         return ret;
1295 }
1296
1297 static int vfs_gluster_chmod(struct vfs_handle_struct *handle,
1298                                 const struct smb_filename *smb_fname,
1299                                 mode_t mode)
1300 {
1301         int ret;
1302
1303         START_PROFILE(syscall_chmod);
1304         ret = glfs_chmod(handle->data, smb_fname->base_name, mode);
1305         END_PROFILE(syscall_chmod);
1306
1307         return ret;
1308 }
1309
1310 static int vfs_gluster_fchmod(struct vfs_handle_struct *handle,
1311                               files_struct *fsp, mode_t mode)
1312 {
1313         int ret;
1314         glfs_fd_t *glfd = NULL;
1315
1316         START_PROFILE(syscall_fchmod);
1317
1318         glfd = vfs_gluster_fetch_glfd(handle, fsp);
1319         if (glfd == NULL) {
1320                 END_PROFILE(syscall_fchmod);
1321                 DBG_ERR("Failed to fetch gluster fd\n");
1322                 return -1;
1323         }
1324
1325         ret = glfs_fchmod(glfd, mode);
1326         END_PROFILE(syscall_fchmod);
1327
1328         return ret;
1329 }
1330
1331 static int vfs_gluster_fchown(struct vfs_handle_struct *handle,
1332                               files_struct *fsp, uid_t uid, gid_t gid)
1333 {
1334         int ret;
1335         glfs_fd_t *glfd = NULL;
1336
1337         START_PROFILE(syscall_fchown);
1338
1339         glfd = vfs_gluster_fetch_glfd(handle, fsp);
1340         if (glfd == NULL) {
1341                 END_PROFILE(syscall_fchown);
1342                 DBG_ERR("Failed to fetch gluster fd\n");
1343                 return -1;
1344         }
1345
1346         ret = glfs_fchown(glfd, uid, gid);
1347         END_PROFILE(syscall_fchown);
1348
1349         return ret;
1350 }
1351
1352 static int vfs_gluster_lchown(struct vfs_handle_struct *handle,
1353                         const struct smb_filename *smb_fname,
1354                         uid_t uid,
1355                         gid_t gid)
1356 {
1357         int ret;
1358
1359         START_PROFILE(syscall_lchown);
1360         ret = glfs_lchown(handle->data, smb_fname->base_name, uid, gid);
1361         END_PROFILE(syscall_lchown);
1362
1363         return ret;
1364 }
1365
1366 static int vfs_gluster_chdir(struct vfs_handle_struct *handle,
1367                         const struct smb_filename *smb_fname)
1368 {
1369         int ret;
1370
1371         START_PROFILE(syscall_chdir);
1372         ret = glfs_chdir(handle->data, smb_fname->base_name);
1373         END_PROFILE(syscall_chdir);
1374
1375         return ret;
1376 }
1377
1378 static struct smb_filename *vfs_gluster_getwd(struct vfs_handle_struct *handle,
1379                                 TALLOC_CTX *ctx)
1380 {
1381         char *cwd;
1382         char *ret;
1383         struct smb_filename *smb_fname = NULL;
1384
1385         START_PROFILE(syscall_getwd);
1386
1387         cwd = SMB_CALLOC_ARRAY(char, PATH_MAX);
1388         if (cwd == NULL) {
1389                 END_PROFILE(syscall_getwd);
1390                 return NULL;
1391         }
1392
1393         ret = glfs_getcwd(handle->data, cwd, PATH_MAX - 1);
1394         END_PROFILE(syscall_getwd);
1395
1396         if (ret == NULL) {
1397                 SAFE_FREE(cwd);
1398                 return NULL;
1399         }
1400         smb_fname = synthetic_smb_fname(ctx,
1401                                         ret,
1402                                         NULL,
1403                                         NULL,
1404                                         0,
1405                                         0);
1406         SAFE_FREE(cwd);
1407         return smb_fname;
1408 }
1409
1410 static int vfs_gluster_ntimes(struct vfs_handle_struct *handle,
1411                               const struct smb_filename *smb_fname,
1412                               struct smb_file_time *ft)
1413 {
1414         int ret = -1;
1415         struct timespec times[2];
1416
1417         START_PROFILE(syscall_ntimes);
1418
1419         if (is_omit_timespec(&ft->atime)) {
1420                 times[0].tv_sec = smb_fname->st.st_ex_atime.tv_sec;
1421                 times[0].tv_nsec = smb_fname->st.st_ex_atime.tv_nsec;
1422         } else {
1423                 times[0].tv_sec = ft->atime.tv_sec;
1424                 times[0].tv_nsec = ft->atime.tv_nsec;
1425         }
1426
1427         if (is_omit_timespec(&ft->mtime)) {
1428                 times[1].tv_sec = smb_fname->st.st_ex_mtime.tv_sec;
1429                 times[1].tv_nsec = smb_fname->st.st_ex_mtime.tv_nsec;
1430         } else {
1431                 times[1].tv_sec = ft->mtime.tv_sec;
1432                 times[1].tv_nsec = ft->mtime.tv_nsec;
1433         }
1434
1435         if ((timespec_compare(&times[0],
1436                               &smb_fname->st.st_ex_atime) == 0) &&
1437             (timespec_compare(&times[1],
1438                               &smb_fname->st.st_ex_mtime) == 0)) {
1439                 END_PROFILE(syscall_ntimes);
1440                 return 0;
1441         }
1442
1443         ret = glfs_utimens(handle->data, smb_fname->base_name, times);
1444         END_PROFILE(syscall_ntimes);
1445
1446         return ret;
1447 }
1448
1449 static int vfs_gluster_ftruncate(struct vfs_handle_struct *handle,
1450                                  files_struct *fsp, off_t offset)
1451 {
1452         int ret;
1453         glfs_fd_t *glfd = NULL;
1454
1455         START_PROFILE(syscall_ftruncate);
1456
1457         glfd = vfs_gluster_fetch_glfd(handle, fsp);
1458         if (glfd == NULL) {
1459                 END_PROFILE(syscall_ftruncate);
1460                 DBG_ERR("Failed to fetch gluster fd\n");
1461                 return -1;
1462         }
1463
1464 #ifdef HAVE_GFAPI_VER_7_6
1465         ret = glfs_ftruncate(glfd, offset, NULL, NULL);
1466 #else
1467         ret = glfs_ftruncate(glfd, offset);
1468 #endif
1469         END_PROFILE(syscall_ftruncate);
1470
1471         return ret;
1472 }
1473
1474 static int vfs_gluster_fallocate(struct vfs_handle_struct *handle,
1475                                  struct files_struct *fsp,
1476                                  uint32_t mode,
1477                                  off_t offset, off_t len)
1478 {
1479         int ret;
1480 #ifdef HAVE_GFAPI_VER_6
1481         glfs_fd_t *glfd = NULL;
1482         int keep_size, punch_hole;
1483
1484         START_PROFILE(syscall_fallocate);
1485
1486         glfd = vfs_gluster_fetch_glfd(handle, fsp);
1487         if (glfd == NULL) {
1488                 END_PROFILE(syscall_fallocate);
1489                 DBG_ERR("Failed to fetch gluster fd\n");
1490                 return -1;
1491         }
1492
1493         keep_size = mode & VFS_FALLOCATE_FL_KEEP_SIZE;
1494         punch_hole = mode & VFS_FALLOCATE_FL_PUNCH_HOLE;
1495
1496         mode &= ~(VFS_FALLOCATE_FL_KEEP_SIZE|VFS_FALLOCATE_FL_PUNCH_HOLE);
1497         if (mode != 0) {
1498                 END_PROFILE(syscall_fallocate);
1499                 errno = ENOTSUP;
1500                 return -1;
1501         }
1502
1503         if (punch_hole) {
1504                 ret = glfs_discard(glfd, offset, len);
1505                 if (ret != 0) {
1506                         DBG_DEBUG("glfs_discard failed: %s\n",
1507                                   strerror(errno));
1508                 }
1509         }
1510
1511         ret = glfs_fallocate(glfd, keep_size, offset, len);
1512         END_PROFILE(syscall_fallocate);
1513 #else
1514         errno = ENOTSUP;
1515         ret = -1;
1516 #endif
1517         return ret;
1518 }
1519
1520 static struct smb_filename *vfs_gluster_realpath(struct vfs_handle_struct *handle,
1521                                 TALLOC_CTX *ctx,
1522                                 const struct smb_filename *smb_fname)
1523 {
1524         char *result = NULL;
1525         struct smb_filename *result_fname = NULL;
1526         char *resolved_path = NULL;
1527
1528         START_PROFILE(syscall_realpath);
1529
1530         resolved_path = SMB_MALLOC_ARRAY(char, PATH_MAX+1);
1531         if (resolved_path == NULL) {
1532                 END_PROFILE(syscall_realpath);
1533                 errno = ENOMEM;
1534                 return NULL;
1535         }
1536
1537         result = glfs_realpath(handle->data,
1538                         smb_fname->base_name,
1539                         resolved_path);
1540         if (result != NULL) {
1541                 result_fname = synthetic_smb_fname(ctx,
1542                                                    result,
1543                                                    NULL,
1544                                                    NULL,
1545                                                    0,
1546                                                    0);
1547         }
1548
1549         SAFE_FREE(resolved_path);
1550         END_PROFILE(syscall_realpath);
1551
1552         return result_fname;
1553 }
1554
1555 static bool vfs_gluster_lock(struct vfs_handle_struct *handle,
1556                              files_struct *fsp, int op, off_t offset,
1557                              off_t count, int type)
1558 {
1559         struct flock flock = { 0, };
1560         int ret;
1561         glfs_fd_t *glfd = NULL;
1562         bool ok = false;
1563
1564         START_PROFILE(syscall_fcntl_lock);
1565
1566         glfd = vfs_gluster_fetch_glfd(handle, fsp);
1567         if (glfd == NULL) {
1568                 DBG_ERR("Failed to fetch gluster fd\n");
1569                 ok = false;
1570                 goto out;
1571         }
1572
1573         flock.l_type = type;
1574         flock.l_whence = SEEK_SET;
1575         flock.l_start = offset;
1576         flock.l_len = count;
1577         flock.l_pid = 0;
1578
1579         ret = glfs_posix_lock(glfd, op, &flock);
1580
1581         if (op == F_GETLK) {
1582                 /* lock query, true if someone else has locked */
1583                 if ((ret != -1) &&
1584                     (flock.l_type != F_UNLCK) &&
1585                     (flock.l_pid != 0) && (flock.l_pid != getpid())) {
1586                         ok = true;
1587                         goto out;
1588                 }
1589                 /* not me */
1590                 ok = false;
1591                 goto out;
1592         }
1593
1594         if (ret == -1) {
1595                 ok = false;
1596                 goto out;
1597         }
1598
1599         ok = true;
1600 out:
1601         END_PROFILE(syscall_fcntl_lock);
1602
1603         return ok;
1604 }
1605
1606 static int vfs_gluster_kernel_flock(struct vfs_handle_struct *handle,
1607                                     files_struct *fsp, uint32_t share_access,
1608                                     uint32_t access_mask)
1609 {
1610         errno = ENOSYS;
1611         return -1;
1612 }
1613
1614 static int vfs_gluster_fcntl(vfs_handle_struct *handle,
1615                              files_struct *fsp, int cmd, va_list cmd_arg)
1616 {
1617         /*
1618          * SMB_VFS_FCNTL() is currently only called by vfs_set_blocking() to
1619          * clear O_NONBLOCK, etc for LOCK_MAND and FIFOs. Ignore it.
1620          */
1621         if (cmd == F_GETFL) {
1622                 return 0;
1623         } else if (cmd == F_SETFL) {
1624                 va_list dup_cmd_arg;
1625                 int opt;
1626
1627                 va_copy(dup_cmd_arg, cmd_arg);
1628                 opt = va_arg(dup_cmd_arg, int);
1629                 va_end(dup_cmd_arg);
1630                 if (opt == 0) {
1631                         return 0;
1632                 }
1633                 DBG_ERR("unexpected fcntl SETFL(%d)\n", opt);
1634                 goto err_out;
1635         }
1636         DBG_ERR("unexpected fcntl: %d\n", cmd);
1637 err_out:
1638         errno = EINVAL;
1639         return -1;
1640 }
1641
1642 static int vfs_gluster_linux_setlease(struct vfs_handle_struct *handle,
1643                                       files_struct *fsp, int leasetype)
1644 {
1645         errno = ENOSYS;
1646         return -1;
1647 }
1648
1649 static bool vfs_gluster_getlock(struct vfs_handle_struct *handle,
1650                                 files_struct *fsp, off_t *poffset,
1651                                 off_t *pcount, int *ptype, pid_t *ppid)
1652 {
1653         struct flock flock = { 0, };
1654         int ret;
1655         glfs_fd_t *glfd = NULL;
1656
1657         START_PROFILE(syscall_fcntl_getlock);
1658
1659         glfd = vfs_gluster_fetch_glfd(handle, fsp);
1660         if (glfd == NULL) {
1661                 END_PROFILE(syscall_fcntl_getlock);
1662                 DBG_ERR("Failed to fetch gluster fd\n");
1663                 return false;
1664         }
1665
1666         flock.l_type = *ptype;
1667         flock.l_whence = SEEK_SET;
1668         flock.l_start = *poffset;
1669         flock.l_len = *pcount;
1670         flock.l_pid = 0;
1671
1672         ret = glfs_posix_lock(glfd, F_GETLK, &flock);
1673
1674         if (ret == -1) {
1675                 END_PROFILE(syscall_fcntl_getlock);
1676                 return false;
1677         }
1678
1679         *ptype = flock.l_type;
1680         *poffset = flock.l_start;
1681         *pcount = flock.l_len;
1682         *ppid = flock.l_pid;
1683         END_PROFILE(syscall_fcntl_getlock);
1684
1685         return true;
1686 }
1687
1688 static int vfs_gluster_symlinkat(struct vfs_handle_struct *handle,
1689                                 const struct smb_filename *link_target,
1690                                 struct files_struct *dirfsp,
1691                                 const struct smb_filename *new_smb_fname)
1692 {
1693         int ret;
1694
1695         START_PROFILE(syscall_symlinkat);
1696         SMB_ASSERT(dirfsp == dirfsp->conn->cwd_fsp);
1697         ret = glfs_symlink(handle->data,
1698                         link_target->base_name,
1699                         new_smb_fname->base_name);
1700         END_PROFILE(syscall_symlinkat);
1701
1702         return ret;
1703 }
1704
1705 static int vfs_gluster_readlinkat(struct vfs_handle_struct *handle,
1706                                 files_struct *dirfsp,
1707                                 const struct smb_filename *smb_fname,
1708                                 char *buf,
1709                                 size_t bufsiz)
1710 {
1711         int ret;
1712
1713         START_PROFILE(syscall_readlinkat);
1714         SMB_ASSERT(dirfsp == dirfsp->conn->cwd_fsp);
1715         ret = glfs_readlink(handle->data, smb_fname->base_name, buf, bufsiz);
1716         END_PROFILE(syscall_readlinkat);
1717
1718         return ret;
1719 }
1720
1721 static int vfs_gluster_linkat(struct vfs_handle_struct *handle,
1722                                 files_struct *srcfsp,
1723                                 const struct smb_filename *old_smb_fname,
1724                                 files_struct *dstfsp,
1725                                 const struct smb_filename *new_smb_fname,
1726                                 int flags)
1727 {
1728         int ret;
1729
1730         START_PROFILE(syscall_linkat);
1731
1732         SMB_ASSERT(srcfsp == srcfsp->conn->cwd_fsp);
1733         SMB_ASSERT(dstfsp == dstfsp->conn->cwd_fsp);
1734
1735         ret = glfs_link(handle->data,
1736                         old_smb_fname->base_name,
1737                         new_smb_fname->base_name);
1738         END_PROFILE(syscall_linkat);
1739
1740         return ret;
1741 }
1742
1743 static int vfs_gluster_mknodat(struct vfs_handle_struct *handle,
1744                                 files_struct *dirfsp,
1745                                 const struct smb_filename *smb_fname,
1746                                 mode_t mode,
1747                                 SMB_DEV_T dev)
1748 {
1749         int ret;
1750
1751         START_PROFILE(syscall_mknodat);
1752         SMB_ASSERT(dirfsp == dirfsp->conn->cwd_fsp);
1753         ret = glfs_mknod(handle->data, smb_fname->base_name, mode, dev);
1754         END_PROFILE(syscall_mknodat);
1755
1756         return ret;
1757 }
1758
1759 static int vfs_gluster_chflags(struct vfs_handle_struct *handle,
1760                                 const struct smb_filename *smb_fname,
1761                                 unsigned int flags)
1762 {
1763         errno = ENOSYS;
1764         return -1;
1765 }
1766
1767 static int vfs_gluster_get_real_filename(struct vfs_handle_struct *handle,
1768                                          const struct smb_filename *path,
1769                                          const char *name,
1770                                          TALLOC_CTX *mem_ctx,
1771                                          char **found_name)
1772 {
1773         int ret;
1774         char key_buf[GLUSTER_NAME_MAX + 64];
1775         char val_buf[GLUSTER_NAME_MAX + 1];
1776
1777         if (strlen(name) >= GLUSTER_NAME_MAX) {
1778                 errno = ENAMETOOLONG;
1779                 return -1;
1780         }
1781
1782         snprintf(key_buf, GLUSTER_NAME_MAX + 64,
1783                  "glusterfs.get_real_filename:%s", name);
1784
1785         ret = glfs_getxattr(handle->data, path->base_name, key_buf, val_buf,
1786                             GLUSTER_NAME_MAX + 1);
1787         if (ret == -1) {
1788                 if (errno == ENOATTR) {
1789                         errno = ENOENT;
1790                 }
1791                 return -1;
1792         }
1793
1794         *found_name = talloc_strdup(mem_ctx, val_buf);
1795         if (found_name[0] == NULL) {
1796                 errno = ENOMEM;
1797                 return -1;
1798         }
1799         return 0;
1800 }
1801
1802 static const char *vfs_gluster_connectpath(struct vfs_handle_struct *handle,
1803                                 const struct smb_filename *smb_fname)
1804 {
1805         return handle->conn->connectpath;
1806 }
1807
1808 /* EA Operations */
1809
1810 static ssize_t vfs_gluster_getxattr(struct vfs_handle_struct *handle,
1811                                 const struct smb_filename *smb_fname,
1812                                 const char *name,
1813                                 void *value,
1814                                 size_t size)
1815 {
1816         return glfs_getxattr(handle->data, smb_fname->base_name,
1817                              name, value, size);
1818 }
1819
1820 static ssize_t vfs_gluster_fgetxattr(struct vfs_handle_struct *handle,
1821                                      files_struct *fsp, const char *name,
1822                                      void *value, size_t size)
1823 {
1824         glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
1825         if (glfd == NULL) {
1826                 DBG_ERR("Failed to fetch gluster fd\n");
1827                 return -1;
1828         }
1829
1830         return glfs_fgetxattr(glfd, name, value, size);
1831 }
1832
1833 static ssize_t vfs_gluster_listxattr(struct vfs_handle_struct *handle,
1834                                 const struct smb_filename *smb_fname,
1835                                 char *list,
1836                                 size_t size)
1837 {
1838         return glfs_listxattr(handle->data, smb_fname->base_name, list, size);
1839 }
1840
1841 static ssize_t vfs_gluster_flistxattr(struct vfs_handle_struct *handle,
1842                                       files_struct *fsp, char *list,
1843                                       size_t size)
1844 {
1845         glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
1846         if (glfd == NULL) {
1847                 DBG_ERR("Failed to fetch gluster fd\n");
1848                 return -1;
1849         }
1850
1851         return glfs_flistxattr(glfd, list, size);
1852 }
1853
1854 static int vfs_gluster_removexattr(struct vfs_handle_struct *handle,
1855                                 const struct smb_filename *smb_fname,
1856                                 const char *name)
1857 {
1858         return glfs_removexattr(handle->data, smb_fname->base_name, name);
1859 }
1860
1861 static int vfs_gluster_fremovexattr(struct vfs_handle_struct *handle,
1862                                     files_struct *fsp, const char *name)
1863 {
1864         glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
1865         if (glfd == NULL) {
1866                 DBG_ERR("Failed to fetch gluster fd\n");
1867                 return -1;
1868         }
1869
1870         return glfs_fremovexattr(glfd, name);
1871 }
1872
1873 static int vfs_gluster_setxattr(struct vfs_handle_struct *handle,
1874                                 const struct smb_filename *smb_fname,
1875                                 const char *name,
1876                                 const void *value, size_t size, int flags)
1877 {
1878         return glfs_setxattr(handle->data, smb_fname->base_name, name, value, size, flags);
1879 }
1880
1881 static int vfs_gluster_fsetxattr(struct vfs_handle_struct *handle,
1882                                  files_struct *fsp, const char *name,
1883                                  const void *value, size_t size, int flags)
1884 {
1885         glfs_fd_t *glfd = vfs_gluster_fetch_glfd(handle, fsp);
1886         if (glfd == NULL) {
1887                 DBG_ERR("Failed to fetch gluster fd\n");
1888                 return -1;
1889         }
1890
1891         return glfs_fsetxattr(glfd, name, value, size, flags);
1892 }
1893
1894 /* AIO Operations */
1895
1896 static bool vfs_gluster_aio_force(struct vfs_handle_struct *handle,
1897                                   files_struct *fsp)
1898 {
1899         return false;
1900 }
1901
1902 static NTSTATUS vfs_gluster_create_dfs_pathat(struct vfs_handle_struct *handle,
1903                                 struct files_struct *dirfsp,
1904                                 const struct smb_filename *smb_fname,
1905                                 const struct referral *reflist,
1906                                 size_t referral_count)
1907 {
1908         TALLOC_CTX *frame = talloc_stackframe();
1909         NTSTATUS status = NT_STATUS_NO_MEMORY;
1910         int ret;
1911         char *msdfs_link = NULL;
1912
1913         SMB_ASSERT(dirfsp == dirfsp->conn->cwd_fsp);
1914
1915         /* Form the msdfs_link contents */
1916         msdfs_link = msdfs_link_string(frame,
1917                                         reflist,
1918                                         referral_count);
1919         if (msdfs_link == NULL) {
1920                 goto out;
1921         }
1922
1923         ret = glfs_symlink(handle->data,
1924                         msdfs_link,
1925                         smb_fname->base_name);
1926         if (ret == 0) {
1927                 status = NT_STATUS_OK;
1928         } else {
1929                 status = map_nt_error_from_unix(errno);
1930         }
1931
1932   out:
1933
1934         TALLOC_FREE(frame);
1935         return status;
1936 }
1937
1938 /*
1939  * Read and return the contents of a DFS redirect given a
1940  * pathname. A caller can pass in NULL for ppreflist and
1941  * preferral_count but still determine if this was a
1942  * DFS redirect point by getting NT_STATUS_OK back
1943  * without incurring the overhead of reading and parsing
1944  * the referral contents.
1945  */
1946
1947 static NTSTATUS vfs_gluster_read_dfs_pathat(struct vfs_handle_struct *handle,
1948                                 TALLOC_CTX *mem_ctx,
1949                                 struct files_struct *dirfsp,
1950                                 struct smb_filename *smb_fname,
1951                                 struct referral **ppreflist,
1952                                 size_t *preferral_count)
1953 {
1954         NTSTATUS status = NT_STATUS_NO_MEMORY;
1955         size_t bufsize;
1956         char *link_target = NULL;
1957         int referral_len;
1958         bool ok;
1959 #if defined(HAVE_BROKEN_READLINK)
1960         char link_target_buf[PATH_MAX];
1961 #else
1962         char link_target_buf[7];
1963 #endif
1964         struct stat st;
1965         int ret;
1966
1967         SMB_ASSERT(dirfsp == dirfsp->conn->cwd_fsp);
1968
1969         if (is_named_stream(smb_fname)) {
1970                 status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
1971                 goto err;
1972         }
1973
1974         if (ppreflist == NULL && preferral_count == NULL) {
1975                 /*
1976                  * We're only checking if this is a DFS
1977                  * redirect. We don't need to return data.
1978                  */
1979                 bufsize = sizeof(link_target_buf);
1980                 link_target = link_target_buf;
1981         } else {
1982                 bufsize = PATH_MAX;
1983                 link_target = talloc_array(mem_ctx, char, bufsize);
1984                 if (!link_target) {
1985                         goto err;
1986                 }
1987         }
1988
1989         ret = glfs_lstat(handle->data, smb_fname->base_name, &st);
1990         if (ret < 0) {
1991                 status = map_nt_error_from_unix(errno);
1992                 goto err;
1993         }
1994
1995         referral_len = glfs_readlink(handle->data,
1996                                 smb_fname->base_name,
1997                                 link_target,
1998                                 bufsize - 1);
1999         if (referral_len < 0) {
2000                 if (errno == EINVAL) {
2001                         DBG_INFO("%s is not a link.\n", smb_fname->base_name);
2002                         status = NT_STATUS_OBJECT_TYPE_MISMATCH;
2003                 } else {
2004                         status = map_nt_error_from_unix(errno);
2005                         DBG_ERR("Error reading "
2006                                 "msdfs link %s: %s\n",
2007                                 smb_fname->base_name,
2008                                 strerror(errno));
2009                 }
2010                 goto err;
2011         }
2012         link_target[referral_len] = '\0';
2013
2014         DBG_INFO("%s -> %s\n",
2015                         smb_fname->base_name,
2016                         link_target);
2017
2018         if (!strnequal(link_target, "msdfs:", 6)) {
2019                 status = NT_STATUS_OBJECT_TYPE_MISMATCH;
2020                 goto err;
2021         }
2022
2023         if (ppreflist == NULL && preferral_count == NULL) {
2024                 /* Early return for checking if this is a DFS link. */
2025                 smb_stat_ex_from_stat(&smb_fname->st, &st);
2026                 return NT_STATUS_OK;
2027         }
2028
2029         ok = parse_msdfs_symlink(mem_ctx,
2030                         lp_msdfs_shuffle_referrals(SNUM(handle->conn)),
2031                         link_target,
2032                         ppreflist,
2033                         preferral_count);
2034
2035         if (ok) {
2036                 smb_stat_ex_from_stat(&smb_fname->st, &st);
2037                 status = NT_STATUS_OK;
2038         } else {
2039                 status = NT_STATUS_NO_MEMORY;
2040         }
2041
2042   err:
2043
2044         if (link_target != link_target_buf) {
2045                 TALLOC_FREE(link_target);
2046         }
2047         return status;
2048 }
2049
2050 static struct vfs_fn_pointers glusterfs_fns = {
2051
2052         /* Disk Operations */
2053
2054         .connect_fn = vfs_gluster_connect,
2055         .disconnect_fn = vfs_gluster_disconnect,
2056         .disk_free_fn = vfs_gluster_disk_free,
2057         .get_quota_fn = vfs_gluster_get_quota,
2058         .set_quota_fn = vfs_gluster_set_quota,
2059         .statvfs_fn = vfs_gluster_statvfs,
2060         .fs_capabilities_fn = vfs_gluster_fs_capabilities,
2061
2062         .get_dfs_referrals_fn = NULL,
2063
2064         /* Directory Operations */
2065
2066         .fdopendir_fn = vfs_gluster_fdopendir,
2067         .readdir_fn = vfs_gluster_readdir,
2068         .seekdir_fn = vfs_gluster_seekdir,
2069         .telldir_fn = vfs_gluster_telldir,
2070         .rewind_dir_fn = vfs_gluster_rewinddir,
2071         .mkdirat_fn = vfs_gluster_mkdirat,
2072         .closedir_fn = vfs_gluster_closedir,
2073
2074         /* File Operations */
2075
2076         .openat_fn = vfs_gluster_openat,
2077         .create_file_fn = NULL,
2078         .close_fn = vfs_gluster_close,
2079         .pread_fn = vfs_gluster_pread,
2080         .pread_send_fn = vfs_gluster_pread_send,
2081         .pread_recv_fn = vfs_gluster_pread_recv,
2082         .pwrite_fn = vfs_gluster_pwrite,
2083         .pwrite_send_fn = vfs_gluster_pwrite_send,
2084         .pwrite_recv_fn = vfs_gluster_pwrite_recv,
2085         .lseek_fn = vfs_gluster_lseek,
2086         .sendfile_fn = vfs_gluster_sendfile,
2087         .recvfile_fn = vfs_gluster_recvfile,
2088         .renameat_fn = vfs_gluster_renameat,
2089         .fsync_send_fn = vfs_gluster_fsync_send,
2090         .fsync_recv_fn = vfs_gluster_fsync_recv,
2091
2092         .stat_fn = vfs_gluster_stat,
2093         .fstat_fn = vfs_gluster_fstat,
2094         .lstat_fn = vfs_gluster_lstat,
2095         .get_alloc_size_fn = vfs_gluster_get_alloc_size,
2096         .unlinkat_fn = vfs_gluster_unlinkat,
2097
2098         .chmod_fn = vfs_gluster_chmod,
2099         .fchmod_fn = vfs_gluster_fchmod,
2100         .fchown_fn = vfs_gluster_fchown,
2101         .lchown_fn = vfs_gluster_lchown,
2102         .chdir_fn = vfs_gluster_chdir,
2103         .getwd_fn = vfs_gluster_getwd,
2104         .ntimes_fn = vfs_gluster_ntimes,
2105         .ftruncate_fn = vfs_gluster_ftruncate,
2106         .fallocate_fn = vfs_gluster_fallocate,
2107         .lock_fn = vfs_gluster_lock,
2108         .kernel_flock_fn = vfs_gluster_kernel_flock,
2109         .fcntl_fn = vfs_gluster_fcntl,
2110         .linux_setlease_fn = vfs_gluster_linux_setlease,
2111         .getlock_fn = vfs_gluster_getlock,
2112         .symlinkat_fn = vfs_gluster_symlinkat,
2113         .readlinkat_fn = vfs_gluster_readlinkat,
2114         .linkat_fn = vfs_gluster_linkat,
2115         .mknodat_fn = vfs_gluster_mknodat,
2116         .realpath_fn = vfs_gluster_realpath,
2117         .chflags_fn = vfs_gluster_chflags,
2118         .file_id_create_fn = NULL,
2119         .streaminfo_fn = NULL,
2120         .get_real_filename_fn = vfs_gluster_get_real_filename,
2121         .connectpath_fn = vfs_gluster_connectpath,
2122         .create_dfs_pathat_fn = vfs_gluster_create_dfs_pathat,
2123         .read_dfs_pathat_fn = vfs_gluster_read_dfs_pathat,
2124
2125         .brl_lock_windows_fn = NULL,
2126         .brl_unlock_windows_fn = NULL,
2127         .strict_lock_check_fn = NULL,
2128         .translate_name_fn = NULL,
2129         .fsctl_fn = NULL,
2130
2131         /* NT ACL Operations */
2132         .fget_nt_acl_fn = NULL,
2133         .get_nt_acl_at_fn = NULL,
2134         .fset_nt_acl_fn = NULL,
2135         .audit_file_fn = NULL,
2136
2137         /* Posix ACL Operations */
2138         .sys_acl_get_file_fn = posixacl_xattr_acl_get_file,
2139         .sys_acl_get_fd_fn = posixacl_xattr_acl_get_fd,
2140         .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
2141         .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
2142         .sys_acl_set_file_fn = posixacl_xattr_acl_set_file,
2143         .sys_acl_set_fd_fn = posixacl_xattr_acl_set_fd,
2144         .sys_acl_delete_def_file_fn = posixacl_xattr_acl_delete_def_file,
2145
2146         /* EA Operations */
2147         .getxattr_fn = vfs_gluster_getxattr,
2148         .getxattrat_send_fn = vfs_not_implemented_getxattrat_send,
2149         .getxattrat_recv_fn = vfs_not_implemented_getxattrat_recv,
2150         .fgetxattr_fn = vfs_gluster_fgetxattr,
2151         .listxattr_fn = vfs_gluster_listxattr,
2152         .flistxattr_fn = vfs_gluster_flistxattr,
2153         .removexattr_fn = vfs_gluster_removexattr,
2154         .fremovexattr_fn = vfs_gluster_fremovexattr,
2155         .setxattr_fn = vfs_gluster_setxattr,
2156         .fsetxattr_fn = vfs_gluster_fsetxattr,
2157
2158         /* AIO Operations */
2159         .aio_force_fn = vfs_gluster_aio_force,
2160
2161         /* Durable handle Operations */
2162         .durable_cookie_fn = NULL,
2163         .durable_disconnect_fn = NULL,
2164         .durable_reconnect_fn = NULL,
2165 };
2166
2167 static_decl_vfs;
2168 NTSTATUS vfs_glusterfs_init(TALLOC_CTX *ctx)
2169 {
2170         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
2171                                 "glusterfs", &glusterfs_fns);
2172 }