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 #include "includes.h"
  23 #include "smbd/smbd.h"
  24 #include <stdio.h>
  25 #include "api/glfs.h"
  26 #include "lib/util/dlinklist.h"
  27
  28 #define DEFAULT_VOLFILE_SERVER "localhost"
  29
  30 /*
  31   TODO
  32   ----
  33   Short term:
  34   - AIO support
  35   - sendfile/recvfile support
  36 */
  37
  38 /* Helpers to provide 'integer' fds */
  39
  40 /* This is global. gfapi's FD operations do not
  41    require filesystem context.
  42 */
  43
  44 static glfs_fd_t **glfd_fd;
  45 static int glfd_fd_size;
  46 static int glfd_fd_used;
  47
  48 static int glfd_fd_store(glfs_fd_t *glfd)
  49 {
  50         int i;
  51         void *tmp;
  52
  53         if (glfd_fd_size == glfd_fd_used) {
  54                 if (glfd_fd_size >= INT_MAX - 1) {
  55                         errno = ENOMEM;
  56                         return -1;
  57                 }
  58
  59                 tmp = talloc_realloc(glfd_fd, glfd_fd, glfs_fd_t *,
  60                                      glfd_fd_size + 1);
  61                 if (tmp == NULL) {
  62                         errno = ENOMEM;
  63                         return -1;
  64                 }
  65
  66                 glfd_fd = tmp;
  67                 glfd_fd[glfd_fd_size] = 0;
  68                 glfd_fd_size++;
  69         }
  70
  71         for (i = 0; i < glfd_fd_size; i++) {
  72                 if (glfd_fd[i] == NULL) {
  73                         break;
  74                 }
  75         }
  76         glfd_fd_used++;
  77         glfd_fd[i] = glfd;
  78         return i;
  79 }
  80
  81 static glfs_fd_t *glfd_fd_get(int i)
  82 {
  83         if (i < 0 || i >= glfd_fd_size) {
  84                 return NULL;
  85         }
  86         return glfd_fd[i];
  87 }
  88
  89 static glfs_fd_t *glfd_fd_clear(int i)
  90 {
  91         glfs_fd_t *glfd = NULL;
  92
  93         if (i < 0 || i >= glfd_fd_size) {
  94                 return NULL;
  95         }
  96
  97         glfd = glfd_fd[i];
  98
  99         glfd_fd[i] = 0;
 100         glfd_fd_used--;
 101         return glfd;
 102 }
 103
 104 /* Helper to convert stat to stat_ex */
 105
 106 static void smb_stat_ex_from_stat(struct stat_ex *dst, const struct stat *src)
 107 {
 108         ZERO_STRUCTP(dst);
 109
 110         dst->st_ex_dev = src->st_dev;
 111         dst->st_ex_ino = src->st_ino;
 112         dst->st_ex_mode = src->st_mode;
 113         dst->st_ex_nlink = src->st_nlink;
 114         dst->st_ex_uid = src->st_uid;
 115         dst->st_ex_gid = src->st_gid;
 116         dst->st_ex_rdev = src->st_rdev;
 117         dst->st_ex_size = src->st_size;
 118         dst->st_ex_atime.tv_sec = src->st_atime;
 119 #ifdef STAT_HAVE_NSEC
 120         dst->st_ex_atime.tv_nsec = src->st_atime_nsec;
 121 #endif
 122         dst->st_ex_mtime.tv_sec = src->st_mtime;
 123 #ifdef STAT_HAVE_NSEC
 124         dst->st_ex_mtime.tv_nsec = src->st_mtime_nsec;
 125 #endif
 126         dst->st_ex_ctime.tv_sec = src->st_ctime;
 127 #ifdef STAT_HAVE_NSEC
 128         dst->st_ex_ctime.tv_nsec = src->st_ctime_nsec;
 129 #endif
 130         dst->st_ex_btime.tv_sec = src->st_mtime;
 131 #ifdef STAT_HAVE_NSEC
 132         dst->st_ex_btime.tv_nsec = src->st_mtime_nsec;
 133 #endif
 134         dst->st_ex_blksize = src->st_blksize;
 135         dst->st_ex_blocks = src->st_blocks;
 136 }
 137
 138 /* pre-opened glfs_t */
 139
 140 static struct glfs_preopened {
 141         char *volume;
 142         glfs_t *fs;
 143         int ref;
 144         struct glfs_preopened *next, *prev;
 145 } *glfs_preopened;
 146
 147
 148 int glfs_set_preopened(const char *volume, glfs_t *fs)
 149 {
 150         struct glfs_preopened *entry = NULL;
 151
 152         entry = talloc_zero(NULL, struct glfs_preopened);
 153         if (!entry) {
 154                 errno = ENOMEM;
 155                 return -1;
 156         }
 157
 158         entry->volume = talloc_strdup(entry, volume);
 159         if (!entry->volume) {
 160                 talloc_free(entry);
 161                 errno = ENOMEM;
 162                 return -1;
 163         }
 164
 165         entry->fs = fs;
 166         entry->ref = 1;
 167
 168         DLIST_ADD(glfs_preopened, entry);
 169
 170         return 0;
 171 }
 172
 173 static glfs_t *glfs_find_preopened(const char *volume)
 174 {
 175         struct glfs_preopened *entry = NULL;
 176
 177         for (entry = glfs_preopened; entry; entry = entry->next) {
 178                 if (strcmp(entry->volume, volume) == 0) {
 179                         entry->ref++;
 180                         return entry->fs;
 181                 }
 182         }
 183
 184         return NULL;
 185 }
 186
 187 static void glfs_clear_preopened(glfs_t *fs)
 188 {
 189         struct glfs_preopened *entry = NULL;
 190
 191         for (entry = glfs_preopened; entry; entry = entry->next) {
 192                 if (entry->fs == fs) {
 193                         if (--entry->ref)
 194                                 return;
 195
 196                         DLIST_REMOVE(glfs_preopened, entry);
 197
 198                         glfs_fini(entry->fs);
 199                         talloc_free(entry);
 200                 }
 201         }
 202 }
 203
 204 /* Disk Operations */
 205
 206 static int vfs_gluster_connect(struct vfs_handle_struct *handle,
 207                                const char *service,
 208                                const char *user)
 209 {
 210         const char *volfile_server;
 211         const char *volume;
 212         const char *logfile;
 213         int loglevel;
 214         glfs_t *fs;
 215         int ret;
 216
 217         logfile = lp_parm_const_string(SNUM(handle->conn), "glusterfs",
 218                                        "logfile", NULL);
 219
 220         loglevel = lp_parm_int(SNUM(handle->conn), "glusterfs", "loglevel", -1);
 221
 222         volfile_server = lp_parm_const_string(SNUM(handle->conn), "glusterfs",
 223                                                "volfile_server", NULL);
 224         if (volfile_server == NULL) {
 225                 volfile_server = DEFAULT_VOLFILE_SERVER;
 226         }
 227
 228         volume = lp_parm_const_string(SNUM(handle->conn), "glusterfs", "volume",
 229                                       NULL);
 230         if (volume == NULL) {
 231                 volume = service;
 232         }
 233
 234         fs = glfs_find_preopened(volume);
 235         if (fs) {
 236                 goto found;
 237         }
 238
 239         fs = glfs_new(volume);
 240         if (fs == NULL) {
 241                 return -1;
 242         }
 243
 244         ret = glfs_set_volfile_server(fs, "tcp", volfile_server, 0);
 245         if (ret < 0) {
 246                 DEBUG(0, ("Failed to set volfile_server %s\n", volfile_server));
 247                 glfs_fini(fs);
 248                 return -1;
 249         }
 250
 251         ret = glfs_set_xlator_option(fs, "*-md-cache", "cache-posix-acl",
 252                                      "true");
 253         if (ret < 0) {
 254                 DEBUG(0, ("%s: Failed to set xlator options\n", volume));
 255                 glfs_fini(fs);
 256                 return -1;
 257         }
 258
 259         ret = glfs_set_logging(fs, logfile, loglevel);
 260         if (ret < 0) {
 261                 DEBUG(0, ("%s: Failed to set logfile %s loglevel %d\n",
 262                           volume, logfile, loglevel));
 263                 glfs_fini(fs);
 264                 return -1;
 265         }
 266
 267         ret = glfs_init(fs);
 268         if (ret < 0) {
 269                 DEBUG(0, ("%s: Failed to initialize volume (%s)\n",
 270                           volume, strerror(errno)));
 271                 glfs_fini(fs);
 272                 return -1;
 273         }
 274
 275         ret = glfs_set_preopened(volume, fs);
 276         if (ret < 0) {
 277                 DEBUG(0, ("%s: Failed to register volume (%s)\n",
 278                           volume, strerror(errno)));
 279                 glfs_fini(fs);
 280                 return -1;
 281         }
 282 found:
 283         DEBUG(0, ("%s: Initialized volume from server %s\n",
 284                   volume, volfile_server));
 285         handle->data = fs;
 286         return 0;
 287 }
 288
 289 static void vfs_gluster_disconnect(struct vfs_handle_struct *handle)
 290 {
 291         glfs_t *fs = NULL;
 292
 293         fs = handle->data;
 294
 295         glfs_clear_preopened(fs);
 296 }
 297
 298 static uint64_t vfs_gluster_disk_free(struct vfs_handle_struct *handle,
 299                                       const char *path, bool small_query,
 300                                       uint64_t *bsize_p, uint64_t *dfree_p,
 301                                       uint64_t *dsize_p)
 302 {
 303         struct statvfs statvfs = { 0, };
 304         int ret;
 305
 306         ret = glfs_statvfs(handle->data, path, &statvfs);
 307         if (ret < 0) {
 308                 return -1;
 309         }
 310
 311         if (bsize_p != NULL) {
 312                 *bsize_p = (uint64_t)statvfs.f_bsize; /* Block size */
 313         }
 314         if (dfree_p != NULL) {
 315                 *dfree_p = (uint64_t)statvfs.f_bavail; /* Available Block units */
 316         }
 317         if (dsize_p != NULL) {
 318                 *dsize_p = (uint64_t)statvfs.f_blocks; /* Total Block units */
 319         }
 320
 321         return (uint64_t)statvfs.f_bavail;
 322 }
 323
 324 static int vfs_gluster_get_quota(struct vfs_handle_struct *handle,
 325                                  enum SMB_QUOTA_TYPE qtype, unid_t id,
 326                                  SMB_DISK_QUOTA *qt)
 327 {
 328         errno = ENOSYS;
 329         return -1;
 330 }
 331
 332 static int
 333 vfs_gluster_set_quota(struct vfs_handle_struct *handle,
 334                       enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
 335 {
 336         errno = ENOSYS;
 337         return -1;
 338 }
 339
 340 static int vfs_gluster_statvfs(struct vfs_handle_struct *handle,
 341                                const char *path,
 342                                struct vfs_statvfs_struct *vfs_statvfs)
 343 {
 344         struct statvfs statvfs = { 0, };
 345         int ret;
 346
 347         ret = glfs_statvfs(handle->data, path, &statvfs);
 348         if (ret < 0) {
 349                 DEBUG(0, ("glfs_statvfs(%s) failed: %s\n",
 350                           path, strerror(errno)));
 351                 return -1;
 352         }
 353
 354         ZERO_STRUCTP(vfs_statvfs);
 355
 356         vfs_statvfs->OptimalTransferSize = statvfs.f_frsize;
 357         vfs_statvfs->BlockSize = statvfs.f_bsize;
 358         vfs_statvfs->TotalBlocks = statvfs.f_blocks;
 359         vfs_statvfs->BlocksAvail = statvfs.f_bfree;
 360         vfs_statvfs->UserBlocksAvail = statvfs.f_bavail;
 361         vfs_statvfs->TotalFileNodes = statvfs.f_files;
 362         vfs_statvfs->FreeFileNodes = statvfs.f_ffree;
 363         vfs_statvfs->FsIdentifier = statvfs.f_fsid;
 364         vfs_statvfs->FsCapabilities =
 365             FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
 366
 367         return ret;
 368 }
 369
 370 static uint32_t vfs_gluster_fs_capabilities(struct vfs_handle_struct *handle,
 371                                             enum timestamp_set_resolution *p_ts_res)
 372 {
 373         uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
 374
 375 #ifdef STAT_HAVE_NSEC
 376         *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
 377 #endif
 378
 379         return caps;
 380 }
 381
 382 static DIR *vfs_gluster_opendir(struct vfs_handle_struct *handle,
 383                                 const char *path, const char *mask,
 384                                 uint32 attributes)
 385 {
 386         glfs_fd_t *fd;
 387
 388         fd = glfs_opendir(handle->data, path);
 389         if (fd == NULL) {
 390                 DEBUG(0, ("glfs_opendir(%s) failed: %s\n",
 391                           path, strerror(errno)));
 392         }
 393
 394         return (DIR *) fd;
 395 }
 396
 397 static DIR *vfs_gluster_fdopendir(struct vfs_handle_struct *handle,
 398                                   files_struct *fsp, const char *mask,
 399                                   uint32 attributes)
 400 {
 401         return (DIR *) glfd_fd_get(fsp->fh->fd);
 402 }
 403
 404 static int vfs_gluster_closedir(struct vfs_handle_struct *handle, DIR *dirp)
 405 {
 406         return glfs_closedir((void *)dirp);
 407 }
 408
 409 static struct dirent *vfs_gluster_readdir(struct vfs_handle_struct *handle,
 410                                           DIR *dirp, SMB_STRUCT_STAT *sbuf)
 411 {
 412         static char direntbuf[512];
 413         int ret;
 414         struct stat stat;
 415         struct dirent *dirent = 0;
 416
 417         if (sbuf != NULL) {
 418                 ret = glfs_readdirplus_r((void *)dirp, &stat, (void *)direntbuf,
 419                                          &dirent);
 420         } else {
 421                 ret = glfs_readdir_r((void *)dirp, (void *)direntbuf, &dirent);
 422         }
 423
 424         if ((ret < 0) || (dirent == NULL)) {
 425                 return NULL;
 426         }
 427
 428         if (sbuf != NULL) {
 429                 smb_stat_ex_from_stat(sbuf, &stat);
 430         }
 431
 432         return dirent;
 433 }
 434
 435 static long vfs_gluster_telldir(struct vfs_handle_struct *handle, DIR *dirp)
 436 {
 437         return glfs_telldir((void *)dirp);
 438 }
 439
 440 static void vfs_gluster_seekdir(struct vfs_handle_struct *handle, DIR *dirp,
 441                                 long offset)
 442 {
 443         glfs_seekdir((void *)dirp, offset);
 444 }
 445
 446 static void vfs_gluster_rewinddir(struct vfs_handle_struct *handle, DIR *dirp)
 447 {
 448         glfs_seekdir((void *)dirp, 0);
 449 }
 450
 451 static void vfs_gluster_init_search_op(struct vfs_handle_struct *handle,
 452                                        DIR *dirp)
 453 {
 454         return;
 455 }
 456
 457 static int vfs_gluster_mkdir(struct vfs_handle_struct *handle, const char *path,
 458                              mode_t mode)
 459 {
 460         return glfs_mkdir(handle->data, path, mode);
 461 }
 462
 463 static int vfs_gluster_rmdir(struct vfs_handle_struct *handle, const char *path)
 464 {
 465         return glfs_rmdir(handle->data, path);
 466 }
 467
 468 static int vfs_gluster_open(struct vfs_handle_struct *handle,
 469                             struct smb_filename *smb_fname, files_struct *fsp,
 470                             int flags, mode_t mode)
 471 {
 472         glfs_fd_t *glfd;
 473
 474         if (flags & O_DIRECTORY) {
 475                 glfd = glfs_opendir(handle->data, smb_fname->base_name);
 476         } else if (flags & O_CREAT) {
 477                 glfd = glfs_creat(handle->data, smb_fname->base_name, flags,
 478                                   mode);
 479         } else {
 480                 glfd = glfs_open(handle->data, smb_fname->base_name, flags);
 481         }
 482
 483         if (glfd == NULL) {
 484                 return -1;
 485         }
 486         return glfd_fd_store(glfd);
 487 }
 488
 489 static int vfs_gluster_close(struct vfs_handle_struct *handle,
 490                              files_struct *fsp)
 491 {
 492         return glfs_close(glfd_fd_clear(fsp->fh->fd));
 493 }
 494
 495 static ssize_t vfs_gluster_read(struct vfs_handle_struct *handle,
 496                                 files_struct *fsp, void *data, size_t n)
 497 {
 498         return glfs_read(glfd_fd_get(fsp->fh->fd), data, n, 0);
 499 }
 500
 501 static ssize_t vfs_gluster_pread(struct vfs_handle_struct *handle,
 502                                  files_struct *fsp, void *data, size_t n,
 503                                  off_t offset)
 504 {
 505         return glfs_pread(glfd_fd_get(fsp->fh->fd), data, n, offset, 0);
 506 }
 507
 508 static struct tevent_req *vfs_gluster_pread_send(struct vfs_handle_struct
 509                                                  *handle, TALLOC_CTX *mem_ctx,
 510                                                  struct tevent_context *ev,
 511                                                  files_struct *fsp, void *data,
 512                                                  size_t n, off_t offset)
 513 {
 514         errno = ENOTSUP;
 515         return NULL;
 516 }
 517
 518 static ssize_t vfs_gluster_pread_recv(struct tevent_req *req, int *err)
 519 {
 520         errno = ENOTSUP;
 521         return -1;
 522 }
 523
 524 static ssize_t vfs_gluster_write(struct vfs_handle_struct *handle,
 525                                  files_struct *fsp, const void *data, size_t n)
 526 {
 527         return glfs_write(glfd_fd_get(fsp->fh->fd), data, n, 0);
 528 }
 529
 530 static ssize_t vfs_gluster_pwrite(struct vfs_handle_struct *handle,
 531                                   files_struct *fsp, const void *data,
 532                                   size_t n, off_t offset)
 533 {
 534         return glfs_pwrite(glfd_fd_get(fsp->fh->fd), data, n, offset, 0);
 535 }
 536
 537 static struct tevent_req *vfs_gluster_pwrite_send(struct vfs_handle_struct
 538                                                   *handle, TALLOC_CTX *mem_ctx,
 539                                                   struct tevent_context *ev,
 540                                                   files_struct *fsp,
 541                                                   const void *data, size_t n,
 542                                                   off_t offset)
 543 {
 544         errno = ENOTSUP;
 545         return NULL;
 546 }
 547
 548 static ssize_t vfs_gluster_pwrite_recv(struct tevent_req *req, int *err)
 549 {
 550         errno = ENOTSUP;
 551         return -1;
 552 }
 553
 554 static off_t vfs_gluster_lseek(struct vfs_handle_struct *handle,
 555                                files_struct *fsp, off_t offset, int whence)
 556 {
 557         return glfs_lseek(glfd_fd_get(fsp->fh->fd), offset, whence);
 558 }
 559
 560 static ssize_t vfs_gluster_sendfile(struct vfs_handle_struct *handle, int tofd,
 561                                     files_struct *fromfsp,
 562                                     const DATA_BLOB *hdr,
 563                                     off_t offset, size_t n)
 564 {
 565         errno = ENOTSUP;
 566         return -1;
 567 }
 568
 569 static ssize_t vfs_gluster_recvfile(struct vfs_handle_struct *handle,
 570                                     int fromfd, files_struct *tofsp,
 571                                     off_t offset, size_t n)
 572 {
 573         errno = ENOTSUP;
 574         return -1;
 575 }
 576
 577 static int vfs_gluster_rename(struct vfs_handle_struct *handle,
 578                               const struct smb_filename *smb_fname_src,
 579                               const struct smb_filename *smb_fname_dst)
 580 {
 581         return glfs_rename(handle->data, smb_fname_src->base_name,
 582                            smb_fname_dst->base_name);
 583 }
 584
 585 static int vfs_gluster_fsync(struct vfs_handle_struct *handle,
 586                              files_struct *fsp)
 587 {
 588         return glfs_fsync(glfd_fd_get(fsp->fh->fd));
 589 }
 590
 591 static struct tevent_req *vfs_gluster_fsync_send(struct vfs_handle_struct
 592                                                  *handle, TALLOC_CTX *mem_ctx,
 593                                                  struct tevent_context *ev,
 594                                                  files_struct *fsp)
 595 {
 596         errno = ENOTSUP;
 597         return NULL;
 598 }
 599
 600 static int vfs_gluster_fsync_recv(struct tevent_req *req, int *err)
 601 {
 602         errno = ENOTSUP;
 603         return -1;
 604 }
 605
 606 static int vfs_gluster_stat(struct vfs_handle_struct *handle,
 607                             struct smb_filename *smb_fname)
 608 {
 609         struct stat st;
 610         int ret;
 611
 612         ret = glfs_stat(handle->data, smb_fname->base_name, &st);
 613         if (ret == 0) {
 614                 smb_stat_ex_from_stat(&smb_fname->st, &st);
 615         }
 616         if (ret < 0 && errno != ENOENT) {
 617                 DEBUG(0, ("glfs_stat(%s) failed: %s\n",
 618                           smb_fname->base_name, strerror(errno)));
 619         }
 620         return ret;
 621 }
 622
 623 static int vfs_gluster_fstat(struct vfs_handle_struct *handle,
 624                              files_struct *fsp, SMB_STRUCT_STAT *sbuf)
 625 {
 626         struct stat st;
 627         int ret;
 628
 629         ret = glfs_fstat(glfd_fd_get(fsp->fh->fd), &st);
 630         if (ret == 0) {
 631                 smb_stat_ex_from_stat(sbuf, &st);
 632         }
 633         if (ret < 0) {
 634                 DEBUG(0, ("glfs_fstat(%d) failed: %s\n",
 635                           fsp->fh->fd, strerror(errno)));
 636         }
 637         return ret;
 638 }
 639
 640 static int vfs_gluster_lstat(struct vfs_handle_struct *handle,
 641                              struct smb_filename *smb_fname)
 642 {
 643         struct stat st;
 644         int ret;
 645
 646         ret = glfs_lstat(handle->data, smb_fname->base_name, &st);
 647         if (ret == 0) {
 648                 smb_stat_ex_from_stat(&smb_fname->st, &st);
 649         }
 650         if (ret < 0 && errno != ENOENT) {
 651                 DEBUG(0, ("glfs_lstat(%s) failed: %s\n",
 652                           smb_fname->base_name, strerror(errno)));
 653         }
 654         return ret;
 655 }
 656
 657 static uint64_t vfs_gluster_get_alloc_size(struct vfs_handle_struct *handle,
 658                                            files_struct *fsp,
 659                                            const SMB_STRUCT_STAT *sbuf)
 660 {
 661         return sbuf->st_ex_blocks * 512;
 662 }
 663
 664 static int vfs_gluster_unlink(struct vfs_handle_struct *handle,
 665                               const struct smb_filename *smb_fname)
 666 {
 667         return glfs_unlink(handle->data, smb_fname->base_name);
 668 }
 669
 670 static int vfs_gluster_chmod(struct vfs_handle_struct *handle,
 671                              const char *path, mode_t mode)
 672 {
 673         return glfs_chmod(handle->data, path, mode);
 674 }
 675
 676 static int vfs_gluster_fchmod(struct vfs_handle_struct *handle,
 677                               files_struct *fsp, mode_t mode)
 678 {
 679         return glfs_fchmod(glfd_fd_get(fsp->fh->fd), mode);
 680 }
 681
 682 static int vfs_gluster_chown(struct vfs_handle_struct *handle,
 683                              const char *path, uid_t uid, gid_t gid)
 684 {
 685         return glfs_chown(handle->data, path, uid, gid);
 686 }
 687
 688 static int vfs_gluster_fchown(struct vfs_handle_struct *handle,
 689                               files_struct *fsp, uid_t uid, gid_t gid)
 690 {
 691         return glfs_fchown(glfd_fd_get(fsp->fh->fd), uid, gid);
 692 }
 693
 694 static int vfs_gluster_lchown(struct vfs_handle_struct *handle,
 695                               const char *path, uid_t uid, gid_t gid)
 696 {
 697         return glfs_lchown(handle->data, path, uid, gid);
 698 }
 699
 700 static int vfs_gluster_chdir(struct vfs_handle_struct *handle, const char *path)
 701 {
 702         return glfs_chdir(handle->data, path);
 703 }
 704
 705 static char *vfs_gluster_getwd(struct vfs_handle_struct *handle)
 706 {
 707         char *cwd;
 708         char *ret;
 709
 710         cwd = SMB_CALLOC_ARRAY(char, PATH_MAX);
 711         if (cwd == NULL) {
 712                 return NULL;
 713         }
 714
 715         ret = glfs_getcwd(handle->data, cwd, PATH_MAX - 1);
 716         if (ret == 0) {
 717                 free(cwd);
 718         }
 719         return ret;
 720 }
 721
 722 static int vfs_gluster_ntimes(struct vfs_handle_struct *handle,
 723                               const struct smb_filename *smb_fname,
 724                               struct smb_file_time *ft)
 725 {
 726         struct timespec times[2];
 727
 728         times[0].tv_sec = ft->atime.tv_sec;
 729         times[0].tv_nsec = ft->atime.tv_nsec;
 730         times[1].tv_sec = ft->mtime.tv_sec;
 731         times[1].tv_nsec = ft->mtime.tv_nsec;
 732
 733         return glfs_utimens(handle->data, smb_fname->base_name, times);
 734 }
 735
 736 static int vfs_gluster_ftruncate(struct vfs_handle_struct *handle,
 737                                  files_struct *fsp, off_t offset)
 738 {
 739         return glfs_ftruncate(glfd_fd_get(fsp->fh->fd), offset);
 740 }
 741
 742 static int vfs_gluster_fallocate(struct vfs_handle_struct *handle,
 743                                  struct files_struct *fsp,
 744                                  enum vfs_fallocate_mode mode,
 745                                  off_t offset, off_t len)
 746 {
 747         errno = ENOTSUP;
 748         return -1;
 749 }
 750
 751 static char *vfs_gluster_realpath(struct vfs_handle_struct *handle,
 752                                   const char *path)
 753 {
 754         return glfs_realpath(handle->data, path, 0);
 755 }
 756
 757 static bool vfs_gluster_lock(struct vfs_handle_struct *handle,
 758                              files_struct *fsp, int op, off_t offset,
 759                              off_t count, int type)
 760 {
 761         struct flock flock = { 0, };
 762         int ret;
 763
 764         flock.l_type = type;
 765         flock.l_whence = SEEK_SET;
 766         flock.l_start = offset;
 767         flock.l_len = count;
 768         flock.l_pid = 0;
 769
 770         ret = glfs_posix_lock(glfd_fd_get(fsp->fh->fd), op, &flock);
 771
 772         if (op == F_GETLK) {
 773                 /* lock query, true if someone else has locked */
 774                 if ((ret != -1) &&
 775                     (flock.l_type != F_UNLCK) &&
 776                     (flock.l_pid != 0) && (flock.l_pid != getpid()))
 777                         return true;
 778                 /* not me */
 779                 return false;
 780         }
 781
 782         if (ret == -1) {
 783                 return false;
 784         }
 785
 786         return true;
 787 }
 788
 789 static int vfs_gluster_kernel_flock(struct vfs_handle_struct *handle,
 790                                     files_struct *fsp, uint32 share_mode,
 791                                     uint32_t access_mask)
 792 {
 793         errno = ENOSYS;
 794         return -1;
 795 }
 796
 797 static int vfs_gluster_linux_setlease(struct vfs_handle_struct *handle,
 798                                       files_struct *fsp, int leasetype)
 799 {
 800         errno = ENOSYS;
 801         return -1;
 802 }
 803
 804 static bool vfs_gluster_getlock(struct vfs_handle_struct *handle,
 805                                 files_struct *fsp, off_t *poffset,
 806                                 off_t *pcount, int *ptype, pid_t *ppid)
 807 {
 808         struct flock flock = { 0, };
 809         int ret;
 810
 811         flock.l_type = *ptype;
 812         flock.l_whence = SEEK_SET;
 813         flock.l_start = *poffset;
 814         flock.l_len = *pcount;
 815         flock.l_pid = 0;
 816
 817         ret = glfs_posix_lock(glfd_fd_get(fsp->fh->fd), F_GETLK, &flock);
 818
 819         if (ret == -1) {
 820                 return false;
 821         }
 822
 823         *ptype = flock.l_type;
 824         *poffset = flock.l_start;
 825         *pcount = flock.l_len;
 826         *ppid = flock.l_pid;
 827
 828         return true;
 829 }
 830
 831 static int vfs_gluster_symlink(struct vfs_handle_struct *handle,
 832                                const char *oldpath, const char *newpath)
 833 {
 834         return glfs_symlink(handle->data, oldpath, newpath);
 835 }
 836
 837 static int vfs_gluster_readlink(struct vfs_handle_struct *handle,
 838                                 const char *path, char *buf, size_t bufsiz)
 839 {
 840         return glfs_readlink(handle->data, path, buf, bufsiz);
 841 }
 842
 843 static int vfs_gluster_link(struct vfs_handle_struct *handle,
 844                             const char *oldpath, const char *newpath)
 845 {
 846         return glfs_link(handle->data, oldpath, newpath);
 847 }
 848
 849 static int vfs_gluster_mknod(struct vfs_handle_struct *handle, const char *path,
 850                              mode_t mode, SMB_DEV_T dev)
 851 {
 852         return glfs_mknod(handle->data, path, mode, dev);
 853 }
 854
 855 static NTSTATUS vfs_gluster_notify_watch(struct vfs_handle_struct *handle,
 856                                          struct sys_notify_context *ctx,
 857                                          const char *path, uint32_t *filter,
 858                                          uint32_t *subdir_filter,
 859                                          void (*callback) (struct sys_notify_context *ctx,
 860                                                            void *private_data,
 861                                                            struct notify_event *ev),
 862                                          void *private_data, void *handle_p)
 863 {
 864         return NT_STATUS_NOT_IMPLEMENTED;
 865 }
 866
 867 static int vfs_gluster_chflags(struct vfs_handle_struct *handle,
 868                                const char *path, unsigned int flags)
 869 {
 870         errno = ENOSYS;
 871         return -1;
 872 }
 873
 874 static int vfs_gluster_get_real_filename(struct vfs_handle_struct *handle,
 875                                          const char *path, const char *name,
 876                                          TALLOC_CTX *mem_ctx, char **found_name)
 877 {
 878         int ret;
 879         char key_buf[NAME_MAX + 64];
 880         char val_buf[NAME_MAX + 1];
 881
 882         if (strlen(name) >= NAME_MAX) {
 883                 errno = ENAMETOOLONG;
 884                 return -1;
 885         }
 886
 887         snprintf(key_buf, NAME_MAX + 64,
 888                  "user.glusterfs.get_real_filename:%s", name);
 889
 890         ret = glfs_getxattr(handle->data, path, key_buf, val_buf, NAME_MAX + 1);
 891         if (ret == -1) {
 892                 if (errno == ENODATA) {
 893                         errno = EOPNOTSUPP;
 894                 }
 895                 return -1;
 896         }
 897
 898         *found_name = talloc_strdup(mem_ctx, val_buf);
 899         if (found_name[0] == NULL) {
 900                 errno = ENOMEM;
 901                 return -1;
 902         }
 903         return 0;
 904 }
 905
 906 static const char *vfs_gluster_connectpath(struct vfs_handle_struct *handle,
 907                                            const char *filename)
 908 {
 909         return handle->conn->connectpath;
 910 }
 911
 912 /* EA Operations */
 913
 914 static ssize_t vfs_gluster_getxattr(struct vfs_handle_struct *handle,
 915                                     const char *path, const char *name,
 916                                     void *value, size_t size)
 917 {
 918         return glfs_getxattr(handle->data, path, name, value, size);
 919 }
 920
 921 static ssize_t vfs_gluster_fgetxattr(struct vfs_handle_struct *handle,
 922                                      files_struct *fsp, const char *name,
 923                                      void *value, size_t size)
 924 {
 925         return glfs_fgetxattr(glfd_fd_get(fsp->fh->fd), name, value, size);
 926 }
 927
 928 static ssize_t vfs_gluster_listxattr(struct vfs_handle_struct *handle,
 929                                      const char *path, char *list, size_t size)
 930 {
 931         return glfs_listxattr(handle->data, path, list, size);
 932 }
 933
 934 static ssize_t vfs_gluster_flistxattr(struct vfs_handle_struct *handle,
 935                                       files_struct *fsp, char *list,
 936                                       size_t size)
 937 {
 938         return glfs_flistxattr(glfd_fd_get(fsp->fh->fd), list, size);
 939 }
 940
 941 static int vfs_gluster_removexattr(struct vfs_handle_struct *handle,
 942                                    const char *path, const char *name)
 943 {
 944         return glfs_removexattr(handle->data, path, name);
 945 }
 946
 947 static int vfs_gluster_fremovexattr(struct vfs_handle_struct *handle,
 948                                     files_struct *fsp, const char *name)
 949 {
 950         return glfs_fremovexattr(glfd_fd_get(fsp->fh->fd), name);
 951 }
 952
 953 static int vfs_gluster_setxattr(struct vfs_handle_struct *handle,
 954                                 const char *path, const char *name,
 955                                 const void *value, size_t size, int flags)
 956 {
 957         return glfs_setxattr(handle->data, path, name, value, size, flags);
 958 }
 959
 960 static int vfs_gluster_fsetxattr(struct vfs_handle_struct *handle,
 961                                  files_struct *fsp, const char *name,
 962                                  const void *value, size_t size, int flags)
 963 {
 964         return glfs_fsetxattr(glfd_fd_get(fsp->fh->fd), name, value, size,
 965                               flags);
 966 }
 967
 968 /* AIO Operations */
 969
 970 static bool vfs_gluster_aio_force(struct vfs_handle_struct *handle,
 971                                   files_struct *fsp)
 972 {
 973         return false;
 974 }
 975
 976 /* Offline Operations */
 977
 978 static bool vfs_gluster_is_offline(struct vfs_handle_struct *handle,
 979                                    const struct smb_filename *fname,
 980                                    SMB_STRUCT_STAT *sbuf)
 981 {
 982         return false;
 983 }
 984
 985 static int vfs_gluster_set_offline(struct vfs_handle_struct *handle,
 986                                    const struct smb_filename *fname)
 987 {
 988         errno = ENOTSUP;
 989         return -1;
 990 }
 991
 992 /*
 993   Gluster ACL Format:
 994
 995   Size = 4 (header) + N * 8 (entry)
 996
 997   Offset  Size    Field (Little Endian)
 998   -------------------------------------
 999   0-3     4-byte  Version
1000
1001   4-5     2-byte  Entry-1 tag
1002   6-7     2-byte  Entry-1 perm
1003   8-11    4-byte  Entry-1 id
1004
1005   12-13   2-byte  Entry-2 tag
1006   14-15   2-byte  Entry-2 perm
1007   16-19   4-byte  Entry-2 id
1008
1009   ...
1010
1011  */
1012
1013 /* header version */
1014 #define GLUSTER_ACL_VERSION 2
1015
1016 /* perm bits */
1017 #define GLUSTER_ACL_READ    0x04
1018 #define GLUSTER_ACL_WRITE   0x02
1019 #define GLUSTER_ACL_EXECUTE 0x01
1020
1021 /* tag values */
1022 #define GLUSTER_ACL_UNDEFINED_TAG  0x00
1023 #define GLUSTER_ACL_USER_OBJ       0x01
1024 #define GLUSTER_ACL_USER           0x02
1025 #define GLUSTER_ACL_GROUP_OBJ      0x04
1026 #define GLUSTER_ACL_GROUP          0x08
1027 #define GLUSTER_ACL_MASK           0x10
1028 #define GLUSTER_ACL_OTHER          0x20
1029
1030 #define GLUSTER_ACL_UNDEFINED_ID  (-1)
1031
1032 #define GLUSTER_ACL_HEADER_SIZE    4
1033 #define GLUSTER_ACL_ENTRY_SIZE     8
1034
1035 static SMB_ACL_T gluster_to_smb_acl(const char *buf, size_t xattr_size,
1036                                     TALLOC_CTX *mem_ctx)
1037 {
1038         int count;
1039         size_t size;
1040         struct smb_acl_entry *smb_ace;
1041         struct smb_acl_t *result;
1042         int i;
1043         int offset;
1044         uint16_t tag;
1045         uint16_t perm;
1046         uint32_t id;
1047
1048         size = xattr_size;
1049
1050         if (size < GLUSTER_ACL_HEADER_SIZE) {
1051                 /* ACL should be at least as big as the header (4 bytes) */
1052                 errno = EINVAL;
1053                 return NULL;
1054         }
1055
1056         size -= GLUSTER_ACL_HEADER_SIZE; /* size of header = 4 bytes */
1057
1058         if (size % GLUSTER_ACL_ENTRY_SIZE) {
1059                 /* Size of entries must strictly be a multiple of
1060                    size of an ACE (8 bytes)
1061                 */
1062                 errno = EINVAL;
1063                 return NULL;
1064         }
1065
1066         count = size / GLUSTER_ACL_ENTRY_SIZE;
1067
1068         /* Version is the first 4 bytes of the ACL */
1069         if (IVAL(buf, 0) != GLUSTER_ACL_VERSION) {
1070                 DEBUG(0, ("Unknown gluster ACL version: %d\n",
1071                           IVAL(buf, 0)));
1072                 return NULL;
1073         }
1074         offset = GLUSTER_ACL_HEADER_SIZE;
1075
1076         result = sys_acl_init(mem_ctx);
1077         if (!result) {
1078                 errno = ENOMEM;
1079                 return NULL;
1080         }
1081
1082         result->acl = talloc_array(result, struct smb_acl_entry, count);
1083         if (!result->acl) {
1084                 errno = ENOMEM;
1085                 talloc_free(result);
1086                 return NULL;
1087         }
1088
1089         result->count = count;
1090
1091         smb_ace = result->acl;
1092
1093         for (i = 0; i < count; i++) {
1094                 /* TAG is the first 2 bytes of an entry */
1095                 tag = SVAL(buf, offset);
1096                 offset += 2;
1097
1098                 /* PERM is the next 2 bytes of an entry */
1099                 perm = SVAL(buf, offset);
1100                 offset += 2;
1101
1102                 /* ID is the last 4 bytes of an entry */
1103                 id = IVAL(buf, offset);
1104                 offset += 4;
1105
1106                 switch(tag) {
1107                 case GLUSTER_ACL_USER:
1108                         smb_ace->a_type = SMB_ACL_USER;
1109                         break;
1110                 case GLUSTER_ACL_USER_OBJ:
1111                         smb_ace->a_type = SMB_ACL_USER_OBJ;
1112                         break;
1113                 case GLUSTER_ACL_GROUP:
1114                         smb_ace->a_type = SMB_ACL_GROUP;
1115                         break;
1116                 case GLUSTER_ACL_GROUP_OBJ:
1117                         smb_ace->a_type = SMB_ACL_GROUP_OBJ;
1118                         break;
1119                 case GLUSTER_ACL_OTHER:
1120                         smb_ace->a_type = SMB_ACL_OTHER;
1121                         break;
1122                 case GLUSTER_ACL_MASK:
1123                         smb_ace->a_type = SMB_ACL_MASK;
1124                         break;
1125                 default:
1126                         DEBUG(0, ("unknown tag type %d\n", (unsigned int) tag));
1127                         return NULL;
1128                 }
1129
1130
1131                 switch(smb_ace->a_type) {
1132                 case SMB_ACL_USER:
1133                         smb_ace->info.user.uid = id;
1134                         break;
1135                 case SMB_ACL_GROUP:
1136                         smb_ace->info.group.gid = id;
1137                         break;
1138                 default:
1139                         break;
1140                 }
1141
1142                 smb_ace->a_perm = 0;
1143                 smb_ace->a_perm |=
1144                         ((perm & GLUSTER_ACL_READ) ? SMB_ACL_READ : 0);
1145                 smb_ace->a_perm |=
1146                         ((perm & GLUSTER_ACL_WRITE) ? SMB_ACL_WRITE : 0);
1147                 smb_ace->a_perm |=
1148                         ((perm & GLUSTER_ACL_EXECUTE) ? SMB_ACL_EXECUTE : 0);
1149
1150                 smb_ace++;
1151         }
1152
1153         return result;
1154 }
1155
1156
1157 static int gluster_ace_cmp(const void *left, const void *right)
1158 {
1159         int ret = 0;
1160         uint16_t tag_left, tag_right;
1161         uint32_t id_left, id_right;
1162
1163         /*
1164           Sorting precedence:
1165
1166            - Smaller TAG values must be earlier.
1167
1168            - Within same TAG, smaller identifiers must be earlier, E.g:
1169              UID 0 entry must be earlier than UID 200
1170              GID 17 entry must be earlier than GID 19
1171         */
1172
1173         /* TAG is the first element in the entry */
1174         tag_left = SVAL(left, 0);
1175         tag_right = SVAL(right, 0);
1176
1177         ret = (tag_left - tag_right);
1178         if (!ret) {
1179                 /* ID is the third element in the entry, after two short
1180                    integers (tag and perm), i.e at offset 4.
1181                 */
1182                 id_left = IVAL(left, 4);
1183                 id_right = IVAL(right, 4);
1184                 ret = id_left - id_right;
1185         }
1186
1187         return ret;
1188 }
1189
1190
1191 static ssize_t smb_to_gluster_acl(SMB_ACL_T theacl, char *buf, size_t len)
1192 {
1193         ssize_t size;
1194         struct smb_acl_entry *smb_ace;
1195         int i;
1196         int count;
1197         uint16_t tag;
1198         uint16_t perm;
1199         uint32_t id;
1200         int offset;
1201
1202         count = theacl->count;
1203
1204         size = GLUSTER_ACL_HEADER_SIZE + (count * GLUSTER_ACL_ENTRY_SIZE);
1205         if (!buf) {
1206                 return size;
1207         }
1208
1209         if (len < size) {
1210                 errno = ERANGE;
1211                 return -1;
1212         }
1213
1214         smb_ace = theacl->acl;
1215
1216         /* Version is the first 4 bytes of the ACL */
1217         SIVAL(buf, 0, GLUSTER_ACL_VERSION);
1218         offset = GLUSTER_ACL_HEADER_SIZE;
1219
1220         for (i = 0; i < count; i++) {
1221                 /* Calculate tag */
1222                 switch(smb_ace->a_type) {
1223                 case SMB_ACL_USER:
1224                         tag = GLUSTER_ACL_USER;
1225                         break;
1226                 case SMB_ACL_USER_OBJ:
1227                         tag = GLUSTER_ACL_USER_OBJ;
1228                         break;
1229                 case SMB_ACL_GROUP:
1230                         tag = GLUSTER_ACL_GROUP;
1231                         break;
1232                 case SMB_ACL_GROUP_OBJ:
1233                         tag = GLUSTER_ACL_GROUP_OBJ;
1234                         break;
1235                 case SMB_ACL_OTHER:
1236                         tag = GLUSTER_ACL_OTHER;
1237                         break;
1238                 case SMB_ACL_MASK:
1239                         tag = GLUSTER_ACL_MASK;
1240                         break;
1241                 default:
1242                         DEBUG(0, ("Unknown tag value %d\n",
1243                                   smb_ace->a_type));
1244                         errno = EINVAL;
1245                         return -1;
1246                 }
1247
1248
1249                 /* Calculate id */
1250                 switch(smb_ace->a_type) {
1251                 case SMB_ACL_USER:
1252                         id = smb_ace->info.user.uid;
1253                         break;
1254                 case SMB_ACL_GROUP:
1255                         id = smb_ace->info.group.gid;
1256                         break;
1257                 default:
1258                         id = GLUSTER_ACL_UNDEFINED_ID;
1259                         break;
1260                 }
1261
1262                 /* Calculate perm */
1263                 perm = 0;
1264
1265                 perm |=
1266                         ((smb_ace->a_perm & SMB_ACL_READ) ? GLUSTER_ACL_READ : 0);
1267                 perm |=
1268                         ((smb_ace->a_perm & SMB_ACL_WRITE) ? GLUSTER_ACL_WRITE : 0);
1269                 perm |=
1270                         ((smb_ace->a_perm & SMB_ACL_EXECUTE) ? GLUSTER_ACL_EXECUTE : 0);
1271
1272
1273                 /* TAG is the first 2 bytes of an entry */
1274                 SSVAL(buf, offset, tag);
1275                 offset += 2;
1276
1277                 /* PERM is the next 2 bytes of an entry */
1278                 SSVAL(buf, offset, perm);
1279                 offset += 2;
1280
1281                 /* ID is the last 4 bytes of an entry */
1282                 SIVAL(buf, offset, id);
1283                 offset += 4;
1284
1285                 smb_ace++;
1286         }
1287
1288         /* Skip the header, sort @count number of 8-byte entries */
1289         qsort(buf+GLUSTER_ACL_HEADER_SIZE, count, GLUSTER_ACL_ENTRY_SIZE,
1290               gluster_ace_cmp);
1291
1292         return size;
1293 }
1294
1295
1296 static SMB_ACL_T vfs_gluster_sys_acl_get_file(struct vfs_handle_struct *handle,
1297                                               const char *path_p,
1298                                               SMB_ACL_TYPE_T type,
1299                                               TALLOC_CTX *mem_ctx)
1300 {
1301         struct smb_acl_t *result;
1302         char *buf;
1303         const char *key;
1304         ssize_t ret;
1305
1306         switch (type) {
1307         case SMB_ACL_TYPE_ACCESS:
1308                 key = "system.posix_acl_access";
1309                 break;
1310         case SMB_ACL_TYPE_DEFAULT:
1311                 key = "system.posix_acl_default";
1312                 break;
1313         default:
1314                 errno = EINVAL;
1315                 return NULL;
1316         }
1317
1318         ret = glfs_getxattr(handle->data, path_p, key, 0, 0);
1319         if (ret <= 0) {
1320                 return NULL;
1321         }
1322
1323         buf = alloca(ret);
1324         ret = glfs_getxattr(handle->data, path_p, key, buf, ret);
1325         if (ret <= 0) {
1326                 return NULL;
1327         }
1328
1329         result = gluster_to_smb_acl(buf, ret, mem_ctx);
1330
1331         return result;
1332 }
1333
1334 static SMB_ACL_T vfs_gluster_sys_acl_get_fd(struct vfs_handle_struct *handle,
1335                                             struct files_struct *fsp,
1336                                             TALLOC_CTX *mem_ctx)
1337 {
1338         struct smb_acl_t *result;
1339         int ret;
1340         char *buf;
1341
1342         ret = glfs_fgetxattr(glfd_fd_get(fsp->fh->fd),
1343                              "system.posix_acl_access", 0, 0);
1344         if (ret <= 0) {
1345                 return NULL;
1346         }
1347
1348         buf = alloca(ret);
1349         ret = glfs_fgetxattr(glfd_fd_get(fsp->fh->fd),
1350                              "system.posix_acl_access", buf, ret);
1351         if (ret <= 0) {
1352                 return NULL;
1353         }
1354
1355         result = gluster_to_smb_acl(buf, ret, mem_ctx);
1356
1357         return result;
1358 }
1359
1360 static int vfs_gluster_sys_acl_set_file(struct vfs_handle_struct *handle,
1361                                         const char *name,
1362                                         SMB_ACL_TYPE_T acltype,
1363                                         SMB_ACL_T theacl)
1364 {
1365         int ret;
1366         const char *key;
1367         char *buf;
1368         ssize_t size;
1369
1370         switch (acltype) {
1371         case SMB_ACL_TYPE_ACCESS:
1372                 key = "system.posix_acl_access";
1373                 break;
1374         case SMB_ACL_TYPE_DEFAULT:
1375                 key = "system.posix_acl_default";
1376                 break;
1377         default:
1378                 errno = EINVAL;
1379                 return -1;
1380         }
1381
1382         size = smb_to_gluster_acl(theacl, 0, 0);
1383         buf = alloca(size);
1384
1385         size = smb_to_gluster_acl(theacl, buf, size);
1386         if (size == -1) {
1387                 return -1;
1388         }
1389
1390         ret = glfs_setxattr(handle->data, name, key, buf, size, 0);
1391
1392         return ret;
1393 }
1394
1395 static int vfs_gluster_sys_acl_set_fd(struct vfs_handle_struct *handle,
1396                                       struct files_struct *fsp,
1397                                       SMB_ACL_T theacl)
1398 {
1399         int ret;
1400         char *key;
1401         char *buf;
1402         ssize_t size;
1403
1404         size = smb_to_gluster_acl(theacl, 0, 0);
1405         buf = alloca(size);
1406
1407         size = smb_to_gluster_acl(theacl, buf, size);
1408         if (size == -1) {
1409                 return -1;
1410         }
1411
1412         ret = glfs_fsetxattr(glfd_fd_get(fsp->fh->fd),
1413                              "system.posix_acl_access", buf, size, 0);
1414         return ret;
1415 }
1416
1417 static int vfs_gluster_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
1418                                                const char *path)
1419 {
1420         return glfs_removexattr(handle->data, path, "system.posix_acl_default");
1421 }
1422
1423 static struct vfs_fn_pointers glusterfs_fns = {
1424
1425         /* Disk Operations */
1426
1427         .connect_fn = vfs_gluster_connect,
1428         .disconnect_fn = vfs_gluster_disconnect,
1429         .disk_free_fn = vfs_gluster_disk_free,
1430         .get_quota_fn = vfs_gluster_get_quota,
1431         .set_quota_fn = vfs_gluster_set_quota,
1432         .statvfs_fn = vfs_gluster_statvfs,
1433         .fs_capabilities_fn = vfs_gluster_fs_capabilities,
1434
1435         .get_dfs_referrals_fn = NULL,
1436
1437         /* Directory Operations */
1438
1439         .opendir_fn = vfs_gluster_opendir,
1440         .fdopendir_fn = vfs_gluster_fdopendir,
1441         .readdir_fn = vfs_gluster_readdir,
1442         .seekdir_fn = vfs_gluster_seekdir,
1443         .telldir_fn = vfs_gluster_telldir,
1444         .rewind_dir_fn = vfs_gluster_rewinddir,
1445         .mkdir_fn = vfs_gluster_mkdir,
1446         .rmdir_fn = vfs_gluster_rmdir,
1447         .closedir_fn = vfs_gluster_closedir,
1448         .init_search_op_fn = vfs_gluster_init_search_op,
1449
1450         /* File Operations */
1451
1452         .open_fn = vfs_gluster_open,
1453         .create_file_fn = NULL,
1454         .close_fn = vfs_gluster_close,
1455         .read_fn = vfs_gluster_read,
1456         .pread_fn = vfs_gluster_pread,
1457         .pread_send_fn = vfs_gluster_pread_send,
1458         .pread_recv_fn = vfs_gluster_pread_recv,
1459         .write_fn = vfs_gluster_write,
1460         .pwrite_fn = vfs_gluster_pwrite,
1461         .pwrite_send_fn = vfs_gluster_pwrite_send,
1462         .pwrite_recv_fn = vfs_gluster_pwrite_recv,
1463         .lseek_fn = vfs_gluster_lseek,
1464         .sendfile_fn = vfs_gluster_sendfile,
1465         .recvfile_fn = vfs_gluster_recvfile,
1466         .rename_fn = vfs_gluster_rename,
1467         .fsync_fn = vfs_gluster_fsync,
1468         .fsync_send_fn = vfs_gluster_fsync_send,
1469         .fsync_recv_fn = vfs_gluster_fsync_recv,
1470
1471         .stat_fn = vfs_gluster_stat,
1472         .fstat_fn = vfs_gluster_fstat,
1473         .lstat_fn = vfs_gluster_lstat,
1474         .get_alloc_size_fn = vfs_gluster_get_alloc_size,
1475         .unlink_fn = vfs_gluster_unlink,
1476
1477         .chmod_fn = vfs_gluster_chmod,
1478         .fchmod_fn = vfs_gluster_fchmod,
1479         .chown_fn = vfs_gluster_chown,
1480         .fchown_fn = vfs_gluster_fchown,
1481         .lchown_fn = vfs_gluster_lchown,
1482         .chdir_fn = vfs_gluster_chdir,
1483         .getwd_fn = vfs_gluster_getwd,
1484         .ntimes_fn = vfs_gluster_ntimes,
1485         .ftruncate_fn = vfs_gluster_ftruncate,
1486         .fallocate_fn = vfs_gluster_fallocate,
1487         .lock_fn = vfs_gluster_lock,
1488         .kernel_flock_fn = vfs_gluster_kernel_flock,
1489         .linux_setlease_fn = vfs_gluster_linux_setlease,
1490         .getlock_fn = vfs_gluster_getlock,
1491         .symlink_fn = vfs_gluster_symlink,
1492         .readlink_fn = vfs_gluster_readlink,
1493         .link_fn = vfs_gluster_link,
1494         .mknod_fn = vfs_gluster_mknod,
1495         .realpath_fn = vfs_gluster_realpath,
1496         .notify_watch_fn = vfs_gluster_notify_watch,
1497         .chflags_fn = vfs_gluster_chflags,
1498         .file_id_create_fn = NULL,
1499         .copy_chunk_send_fn = NULL,
1500         .copy_chunk_recv_fn = NULL,
1501         .streaminfo_fn = NULL,
1502         .get_real_filename_fn = vfs_gluster_get_real_filename,
1503         .connectpath_fn = vfs_gluster_connectpath,
1504
1505         .brl_lock_windows_fn = NULL,
1506         .brl_unlock_windows_fn = NULL,
1507         .brl_cancel_windows_fn = NULL,
1508         .strict_lock_fn = NULL,
1509         .strict_unlock_fn = NULL,
1510         .translate_name_fn = NULL,
1511         .fsctl_fn = NULL,
1512
1513         /* NT ACL Operations */
1514         .fget_nt_acl_fn = NULL,
1515         .get_nt_acl_fn = NULL,
1516         .fset_nt_acl_fn = NULL,
1517         .audit_file_fn = NULL,
1518
1519         /* Posix ACL Operations */
1520         .chmod_acl_fn = NULL,   /* passthrough to default */
1521         .fchmod_acl_fn = NULL,  /* passthrough to default */
1522         .sys_acl_get_file_fn = vfs_gluster_sys_acl_get_file,
1523         .sys_acl_get_fd_fn = vfs_gluster_sys_acl_get_fd,
1524         .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
1525         .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
1526         .sys_acl_set_file_fn = vfs_gluster_sys_acl_set_file,
1527         .sys_acl_set_fd_fn = vfs_gluster_sys_acl_set_fd,
1528         .sys_acl_delete_def_file_fn = vfs_gluster_sys_acl_delete_def_file,
1529
1530         /* EA Operations */
1531         .getxattr_fn = vfs_gluster_getxattr,
1532         .fgetxattr_fn = vfs_gluster_fgetxattr,
1533         .listxattr_fn = vfs_gluster_listxattr,
1534         .flistxattr_fn = vfs_gluster_flistxattr,
1535         .removexattr_fn = vfs_gluster_removexattr,
1536         .fremovexattr_fn = vfs_gluster_fremovexattr,
1537         .setxattr_fn = vfs_gluster_setxattr,
1538         .fsetxattr_fn = vfs_gluster_fsetxattr,
1539
1540         /* AIO Operations */
1541         .aio_force_fn = vfs_gluster_aio_force,
1542
1543         /* Offline Operations */
1544         .is_offline_fn = vfs_gluster_is_offline,
1545         .set_offline_fn = vfs_gluster_set_offline,
1546
1547         /* Durable handle Operations */
1548         .durable_cookie_fn = NULL,
1549         .durable_disconnect_fn = NULL,
1550         .durable_reconnect_fn = NULL,
1551 };
1552
1553 NTSTATUS vfs_glusterfs_init(void);
1554 NTSTATUS vfs_glusterfs_init(void)
1555 {
1556         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1557                                 "glusterfs", &glusterfs_fns);
1558 }