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  *   - AIO support\n
  30  *     See, for example \c vfs_aio_linux.c in the \c sourc3/modules directory
  31  *   - sendfile/recvfile support
  32  *
  33  * A Samba VFS module for GlusterFS, based on Gluster's libgfapi.
  34  * This is a "bottom" vfs module (not something to be stacked on top of
  35  * another module), and translates (most) calls to the closest actions
  36  * available in libgfapi.
  37  *
  38  */
  39
  40 #include "includes.h"
  41 #include "smbd/smbd.h"
  42 #include <stdio.h>
  43 #include "api/glfs.h"
  44 #include "lib/util/dlinklist.h"
  45
  46 #define DEFAULT_VOLFILE_SERVER "localhost"
  47
  48 /**
  49  * Helper to convert struct stat to struct stat_ex.
  50  */
  51 static void smb_stat_ex_from_stat(struct stat_ex *dst, const struct stat *src)
  52 {
  53         ZERO_STRUCTP(dst);
  54
  55         dst->st_ex_dev = src->st_dev;
  56         dst->st_ex_ino = src->st_ino;
  57         dst->st_ex_mode = src->st_mode;
  58         dst->st_ex_nlink = src->st_nlink;
  59         dst->st_ex_uid = src->st_uid;
  60         dst->st_ex_gid = src->st_gid;
  61         dst->st_ex_rdev = src->st_rdev;
  62         dst->st_ex_size = src->st_size;
  63         dst->st_ex_atime.tv_sec = src->st_atime;
  64         dst->st_ex_mtime.tv_sec = src->st_mtime;
  65         dst->st_ex_ctime.tv_sec = src->st_ctime;
  66         dst->st_ex_btime.tv_sec = src->st_mtime;
  67         dst->st_ex_blksize = src->st_blksize;
  68         dst->st_ex_blocks = src->st_blocks;
  69 #ifdef STAT_HAVE_NSEC
  70         dst->st_ex_atime.tv_nsec = src->st_atime_nsec;
  71         dst->st_ex_mtime.tv_nsec = src->st_mtime_nsec;
  72         dst->st_ex_ctime.tv_nsec = src->st_ctime_nsec;
  73         dst->st_ex_btime.tv_nsec = src->st_mtime_nsec;
  74 #endif
  75 }
  76
  77 /* pre-opened glfs_t */
  78
  79 static struct glfs_preopened {
  80         char *volume;
  81         glfs_t *fs;
  82         int ref;
  83         struct glfs_preopened *next, *prev;
  84 } *glfs_preopened;
  85
  86
  87 static int glfs_set_preopened(const char *volume, glfs_t *fs)
  88 {
  89         struct glfs_preopened *entry = NULL;
  90
  91         entry = talloc_zero(NULL, struct glfs_preopened);
  92         if (!entry) {
  93                 errno = ENOMEM;
  94                 return -1;
  95         }
  96
  97         entry->volume = talloc_strdup(entry, volume);
  98         if (!entry->volume) {
  99                 talloc_free(entry);
 100                 errno = ENOMEM;
 101                 return -1;
 102         }
 103
 104         entry->fs = fs;
 105         entry->ref = 1;
 106
 107         DLIST_ADD(glfs_preopened, entry);
 108
 109         return 0;
 110 }
 111
 112 static glfs_t *glfs_find_preopened(const char *volume)
 113 {
 114         struct glfs_preopened *entry = NULL;
 115
 116         for (entry = glfs_preopened; entry; entry = entry->next) {
 117                 if (strcmp(entry->volume, volume) == 0) {
 118                         entry->ref++;
 119                         return entry->fs;
 120                 }
 121         }
 122
 123         return NULL;
 124 }
 125
 126 static void glfs_clear_preopened(glfs_t *fs)
 127 {
 128         struct glfs_preopened *entry = NULL;
 129
 130         for (entry = glfs_preopened; entry; entry = entry->next) {
 131                 if (entry->fs == fs) {
 132                         if (--entry->ref)
 133                                 return;
 134
 135                         DLIST_REMOVE(glfs_preopened, entry);
 136
 137                         glfs_fini(entry->fs);
 138                         talloc_free(entry);
 139                 }
 140         }
 141 }
 142
 143 /* Disk Operations */
 144
 145 static int vfs_gluster_connect(struct vfs_handle_struct *handle,
 146                                const char *service,
 147                                const char *user)
 148 {
 149         const char *volfile_server;
 150         const char *volume;
 151         char *logfile;
 152         int loglevel;
 153         glfs_t *fs = NULL;
 154         TALLOC_CTX *tmp_ctx;
 155         int ret = 0;
 156
 157         tmp_ctx = talloc_new(NULL);
 158         if (tmp_ctx == NULL) {
 159                 ret = -1;
 160                 goto done;
 161         }
 162         logfile = lp_parm_talloc_string(tmp_ctx, SNUM(handle->conn), "glusterfs",
 163                                        "logfile", NULL);
 164
 165         loglevel = lp_parm_int(SNUM(handle->conn), "glusterfs", "loglevel", -1);
 166
 167         volfile_server = lp_parm_const_string(SNUM(handle->conn), "glusterfs",
 168                                                "volfile_server", NULL);
 169         if (volfile_server == NULL) {
 170                 volfile_server = DEFAULT_VOLFILE_SERVER;
 171         }
 172
 173         volume = lp_parm_const_string(SNUM(handle->conn), "glusterfs", "volume",
 174                                       NULL);
 175         if (volume == NULL) {
 176                 volume = service;
 177         }
 178
 179         fs = glfs_find_preopened(volume);
 180         if (fs) {
 181                 goto done;
 182         }
 183
 184         fs = glfs_new(volume);
 185         if (fs == NULL) {
 186                 ret = -1;
 187                 goto done;
 188         }
 189
 190         ret = glfs_set_volfile_server(fs, "tcp", volfile_server, 0);
 191         if (ret < 0) {
 192                 DEBUG(0, ("Failed to set volfile_server %s\n", volfile_server));
 193                 goto done;
 194         }
 195
 196         ret = glfs_set_xlator_option(fs, "*-md-cache", "cache-posix-acl",
 197                                      "true");
 198         if (ret < 0) {
 199                 DEBUG(0, ("%s: Failed to set xlator options\n", volume));
 200                 goto done;
 201         }
 202
 203         ret = glfs_set_logging(fs, logfile, loglevel);
 204         if (ret < 0) {
 205                 DEBUG(0, ("%s: Failed to set logfile %s loglevel %d\n",
 206                           volume, logfile, loglevel));
 207                 goto done;
 208         }
 209
 210         ret = glfs_init(fs);
 211         if (ret < 0) {
 212                 DEBUG(0, ("%s: Failed to initialize volume (%s)\n",
 213                           volume, strerror(errno)));
 214                 goto done;
 215         }
 216
 217         ret = glfs_set_preopened(volume, fs);
 218         if (ret < 0) {
 219                 DEBUG(0, ("%s: Failed to register volume (%s)\n",
 220                           volume, strerror(errno)));
 221                 goto done;
 222         }
 223 done:
 224         talloc_free(tmp_ctx);
 225         if (ret < 0) {
 226                 if (fs)
 227                         glfs_fini(fs);
 228                 return -1;
 229         } else {
 230                 DEBUG(0, ("%s: Initialized volume from server %s\n",
 231                          volume, volfile_server));
 232                 handle->data = fs;
 233                 return 0;
 234         }
 235 }
 236
 237 static void vfs_gluster_disconnect(struct vfs_handle_struct *handle)
 238 {
 239         glfs_t *fs = NULL;
 240
 241         fs = handle->data;
 242
 243         glfs_clear_preopened(fs);
 244 }
 245
 246 static uint64_t vfs_gluster_disk_free(struct vfs_handle_struct *handle,
 247                                       const char *path, bool small_query,
 248                                       uint64_t *bsize_p, uint64_t *dfree_p,
 249                                       uint64_t *dsize_p)
 250 {
 251         struct statvfs statvfs = { 0, };
 252         int ret;
 253
 254         ret = glfs_statvfs(handle->data, path, &statvfs);
 255         if (ret < 0) {
 256                 return -1;
 257         }
 258
 259         if (bsize_p != NULL) {
 260                 *bsize_p = (uint64_t)statvfs.f_bsize; /* Block size */
 261         }
 262         if (dfree_p != NULL) {
 263                 *dfree_p = (uint64_t)statvfs.f_bavail; /* Available Block units */
 264         }
 265         if (dsize_p != NULL) {
 266                 *dsize_p = (uint64_t)statvfs.f_blocks; /* Total Block units */
 267         }
 268
 269         return (uint64_t)statvfs.f_bavail;
 270 }
 271
 272 static int vfs_gluster_get_quota(struct vfs_handle_struct *handle,
 273                                  enum SMB_QUOTA_TYPE qtype, unid_t id,
 274                                  SMB_DISK_QUOTA *qt)
 275 {
 276         errno = ENOSYS;
 277         return -1;
 278 }
 279
 280 static int
 281 vfs_gluster_set_quota(struct vfs_handle_struct *handle,
 282                       enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
 283 {
 284         errno = ENOSYS;
 285         return -1;
 286 }
 287
 288 static int vfs_gluster_statvfs(struct vfs_handle_struct *handle,
 289                                const char *path,
 290                                struct vfs_statvfs_struct *vfs_statvfs)
 291 {
 292         struct statvfs statvfs = { 0, };
 293         int ret;
 294
 295         ret = glfs_statvfs(handle->data, path, &statvfs);
 296         if (ret < 0) {
 297                 DEBUG(0, ("glfs_statvfs(%s) failed: %s\n",
 298                           path, strerror(errno)));
 299                 return -1;
 300         }
 301
 302         ZERO_STRUCTP(vfs_statvfs);
 303
 304         vfs_statvfs->OptimalTransferSize = statvfs.f_frsize;
 305         vfs_statvfs->BlockSize = statvfs.f_bsize;
 306         vfs_statvfs->TotalBlocks = statvfs.f_blocks;
 307         vfs_statvfs->BlocksAvail = statvfs.f_bfree;
 308         vfs_statvfs->UserBlocksAvail = statvfs.f_bavail;
 309         vfs_statvfs->TotalFileNodes = statvfs.f_files;
 310         vfs_statvfs->FreeFileNodes = statvfs.f_ffree;
 311         vfs_statvfs->FsIdentifier = statvfs.f_fsid;
 312         vfs_statvfs->FsCapabilities =
 313             FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
 314
 315         return ret;
 316 }
 317
 318 static uint32_t vfs_gluster_fs_capabilities(struct vfs_handle_struct *handle,
 319                                             enum timestamp_set_resolution *p_ts_res)
 320 {
 321         uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
 322
 323 #ifdef STAT_HAVE_NSEC
 324         *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
 325 #endif
 326
 327         return caps;
 328 }
 329
 330 static DIR *vfs_gluster_opendir(struct vfs_handle_struct *handle,
 331                                 const char *path, const char *mask,
 332                                 uint32 attributes)
 333 {
 334         glfs_fd_t *fd;
 335
 336         fd = glfs_opendir(handle->data, path);
 337         if (fd == NULL) {
 338                 DEBUG(0, ("glfs_opendir(%s) failed: %s\n",
 339                           path, strerror(errno)));
 340         }
 341
 342         return (DIR *) fd;
 343 }
 344
 345 static DIR *vfs_gluster_fdopendir(struct vfs_handle_struct *handle,
 346                                   files_struct *fsp, const char *mask,
 347                                   uint32 attributes)
 348 {
 349         return (DIR *) *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
 350 }
 351
 352 static int vfs_gluster_closedir(struct vfs_handle_struct *handle, DIR *dirp)
 353 {
 354         return glfs_closedir((void *)dirp);
 355 }
 356
 357 static struct dirent *vfs_gluster_readdir(struct vfs_handle_struct *handle,
 358                                           DIR *dirp, SMB_STRUCT_STAT *sbuf)
 359 {
 360         static char direntbuf[512];
 361         int ret;
 362         struct stat stat;
 363         struct dirent *dirent = 0;
 364
 365         if (sbuf != NULL) {
 366                 ret = glfs_readdirplus_r((void *)dirp, &stat, (void *)direntbuf,
 367                                          &dirent);
 368         } else {
 369                 ret = glfs_readdir_r((void *)dirp, (void *)direntbuf, &dirent);
 370         }
 371
 372         if ((ret < 0) || (dirent == NULL)) {
 373                 return NULL;
 374         }
 375
 376         if (sbuf != NULL) {
 377                 smb_stat_ex_from_stat(sbuf, &stat);
 378         }
 379
 380         return dirent;
 381 }
 382
 383 static long vfs_gluster_telldir(struct vfs_handle_struct *handle, DIR *dirp)
 384 {
 385         return glfs_telldir((void *)dirp);
 386 }
 387
 388 static void vfs_gluster_seekdir(struct vfs_handle_struct *handle, DIR *dirp,
 389                                 long offset)
 390 {
 391         glfs_seekdir((void *)dirp, offset);
 392 }
 393
 394 static void vfs_gluster_rewinddir(struct vfs_handle_struct *handle, DIR *dirp)
 395 {
 396         glfs_seekdir((void *)dirp, 0);
 397 }
 398
 399 static void vfs_gluster_init_search_op(struct vfs_handle_struct *handle,
 400                                        DIR *dirp)
 401 {
 402         return;
 403 }
 404
 405 static int vfs_gluster_mkdir(struct vfs_handle_struct *handle, const char *path,
 406                              mode_t mode)
 407 {
 408         return glfs_mkdir(handle->data, path, mode);
 409 }
 410
 411 static int vfs_gluster_rmdir(struct vfs_handle_struct *handle, const char *path)
 412 {
 413         return glfs_rmdir(handle->data, path);
 414 }
 415
 416 static int vfs_gluster_open(struct vfs_handle_struct *handle,
 417                             struct smb_filename *smb_fname, files_struct *fsp,
 418                             int flags, mode_t mode)
 419 {
 420         glfs_fd_t *glfd;
 421         glfs_fd_t **p_tmp;
 422
 423         if (flags & O_DIRECTORY) {
 424                 glfd = glfs_opendir(handle->data, smb_fname->base_name);
 425         } else if (flags & O_CREAT) {
 426                 glfd = glfs_creat(handle->data, smb_fname->base_name, flags,
 427                                   mode);
 428         } else {
 429                 glfd = glfs_open(handle->data, smb_fname->base_name, flags);
 430         }
 431
 432         if (glfd == NULL) {
 433                 return -1;
 434         }
 435         p_tmp = (glfs_fd_t **)VFS_ADD_FSP_EXTENSION(handle, fsp,
 436                                                           glfs_fd_t *, NULL);
 437         *p_tmp = glfd;
 438         /* An arbitrary value for error reporting, so you know its us. */
 439         return 13371337;
 440 }
 441
 442 static int vfs_gluster_close(struct vfs_handle_struct *handle,
 443                              files_struct *fsp)
 444 {
 445         glfs_fd_t *glfd;
 446         glfd = *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
 447         VFS_REMOVE_FSP_EXTENSION(handle, fsp);
 448         return glfs_close(glfd);
 449 }
 450
 451 static ssize_t vfs_gluster_read(struct vfs_handle_struct *handle,
 452                                 files_struct *fsp, void *data, size_t n)
 453 {
 454         return glfs_read(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, 0);
 455 }
 456
 457 static ssize_t vfs_gluster_pread(struct vfs_handle_struct *handle,
 458                                  files_struct *fsp, void *data, size_t n,
 459                                  off_t offset)
 460 {
 461         return glfs_pread(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, offset, 0);
 462 }
 463
 464 static struct tevent_req *vfs_gluster_pread_send(struct vfs_handle_struct
 465                                                  *handle, TALLOC_CTX *mem_ctx,
 466                                                  struct tevent_context *ev,
 467                                                  files_struct *fsp, void *data,
 468                                                  size_t n, off_t offset)
 469 {
 470         errno = ENOTSUP;
 471         return NULL;
 472 }
 473
 474 static ssize_t vfs_gluster_pread_recv(struct tevent_req *req, int *err)
 475 {
 476         errno = ENOTSUP;
 477         return -1;
 478 }
 479
 480 static ssize_t vfs_gluster_write(struct vfs_handle_struct *handle,
 481                                  files_struct *fsp, const void *data, size_t n)
 482 {
 483         return glfs_write(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, 0);
 484 }
 485
 486 static ssize_t vfs_gluster_pwrite(struct vfs_handle_struct *handle,
 487                                   files_struct *fsp, const void *data,
 488                                   size_t n, off_t offset)
 489 {
 490         return glfs_pwrite(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), data, n, offset, 0);
 491 }
 492
 493 static struct tevent_req *vfs_gluster_pwrite_send(struct vfs_handle_struct
 494                                                   *handle, TALLOC_CTX *mem_ctx,
 495                                                   struct tevent_context *ev,
 496                                                   files_struct *fsp,
 497                                                   const void *data, size_t n,
 498                                                   off_t offset)
 499 {
 500         errno = ENOTSUP;
 501         return NULL;
 502 }
 503
 504 static ssize_t vfs_gluster_pwrite_recv(struct tevent_req *req, int *err)
 505 {
 506         errno = ENOTSUP;
 507         return -1;
 508 }
 509
 510 static off_t vfs_gluster_lseek(struct vfs_handle_struct *handle,
 511                                files_struct *fsp, off_t offset, int whence)
 512 {
 513         return glfs_lseek(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), offset, whence);
 514 }
 515
 516 static ssize_t vfs_gluster_sendfile(struct vfs_handle_struct *handle, int tofd,
 517                                     files_struct *fromfsp,
 518                                     const DATA_BLOB *hdr,
 519                                     off_t offset, size_t n)
 520 {
 521         errno = ENOTSUP;
 522         return -1;
 523 }
 524
 525 static ssize_t vfs_gluster_recvfile(struct vfs_handle_struct *handle,
 526                                     int fromfd, files_struct *tofsp,
 527                                     off_t offset, size_t n)
 528 {
 529         errno = ENOTSUP;
 530         return -1;
 531 }
 532
 533 static int vfs_gluster_rename(struct vfs_handle_struct *handle,
 534                               const struct smb_filename *smb_fname_src,
 535                               const struct smb_filename *smb_fname_dst)
 536 {
 537         return glfs_rename(handle->data, smb_fname_src->base_name,
 538                            smb_fname_dst->base_name);
 539 }
 540
 541 static int vfs_gluster_fsync(struct vfs_handle_struct *handle,
 542                              files_struct *fsp)
 543 {
 544         return glfs_fsync(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp));
 545 }
 546
 547 static struct tevent_req *vfs_gluster_fsync_send(struct vfs_handle_struct
 548                                                  *handle, TALLOC_CTX *mem_ctx,
 549                                                  struct tevent_context *ev,
 550                                                  files_struct *fsp)
 551 {
 552         errno = ENOTSUP;
 553         return NULL;
 554 }
 555
 556 static int vfs_gluster_fsync_recv(struct tevent_req *req, int *err)
 557 {
 558         errno = ENOTSUP;
 559         return -1;
 560 }
 561
 562 static int vfs_gluster_stat(struct vfs_handle_struct *handle,
 563                             struct smb_filename *smb_fname)
 564 {
 565         struct stat st;
 566         int ret;
 567
 568         ret = glfs_stat(handle->data, smb_fname->base_name, &st);
 569         if (ret == 0) {
 570                 smb_stat_ex_from_stat(&smb_fname->st, &st);
 571         }
 572         if (ret < 0 && errno != ENOENT) {
 573                 DEBUG(0, ("glfs_stat(%s) failed: %s\n",
 574                           smb_fname->base_name, strerror(errno)));
 575         }
 576         return ret;
 577 }
 578
 579 static int vfs_gluster_fstat(struct vfs_handle_struct *handle,
 580                              files_struct *fsp, SMB_STRUCT_STAT *sbuf)
 581 {
 582         struct stat st;
 583         int ret;
 584
 585         ret = glfs_fstat(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), &st);
 586         if (ret == 0) {
 587                 smb_stat_ex_from_stat(sbuf, &st);
 588         }
 589         if (ret < 0) {
 590                 DEBUG(0, ("glfs_fstat(%d) failed: %s\n",
 591                           fsp->fh->fd, strerror(errno)));
 592         }
 593         return ret;
 594 }
 595
 596 static int vfs_gluster_lstat(struct vfs_handle_struct *handle,
 597                              struct smb_filename *smb_fname)
 598 {
 599         struct stat st;
 600         int ret;
 601
 602         ret = glfs_lstat(handle->data, smb_fname->base_name, &st);
 603         if (ret == 0) {
 604                 smb_stat_ex_from_stat(&smb_fname->st, &st);
 605         }
 606         if (ret < 0 && errno != ENOENT) {
 607                 DEBUG(0, ("glfs_lstat(%s) failed: %s\n",
 608                           smb_fname->base_name, strerror(errno)));
 609         }
 610         return ret;
 611 }
 612
 613 static uint64_t vfs_gluster_get_alloc_size(struct vfs_handle_struct *handle,
 614                                            files_struct *fsp,
 615                                            const SMB_STRUCT_STAT *sbuf)
 616 {
 617         return sbuf->st_ex_blocks * 512;
 618 }
 619
 620 static int vfs_gluster_unlink(struct vfs_handle_struct *handle,
 621                               const struct smb_filename *smb_fname)
 622 {
 623         return glfs_unlink(handle->data, smb_fname->base_name);
 624 }
 625
 626 static int vfs_gluster_chmod(struct vfs_handle_struct *handle,
 627                              const char *path, mode_t mode)
 628 {
 629         return glfs_chmod(handle->data, path, mode);
 630 }
 631
 632 static int vfs_gluster_fchmod(struct vfs_handle_struct *handle,
 633                               files_struct *fsp, mode_t mode)
 634 {
 635         return glfs_fchmod(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), mode);
 636 }
 637
 638 static int vfs_gluster_chown(struct vfs_handle_struct *handle,
 639                              const char *path, uid_t uid, gid_t gid)
 640 {
 641         return glfs_chown(handle->data, path, uid, gid);
 642 }
 643
 644 static int vfs_gluster_fchown(struct vfs_handle_struct *handle,
 645                               files_struct *fsp, uid_t uid, gid_t gid)
 646 {
 647         return glfs_fchown(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), uid, gid);
 648 }
 649
 650 static int vfs_gluster_lchown(struct vfs_handle_struct *handle,
 651                               const char *path, uid_t uid, gid_t gid)
 652 {
 653         return glfs_lchown(handle->data, path, uid, gid);
 654 }
 655
 656 static int vfs_gluster_chdir(struct vfs_handle_struct *handle, const char *path)
 657 {
 658         return glfs_chdir(handle->data, path);
 659 }
 660
 661 static char *vfs_gluster_getwd(struct vfs_handle_struct *handle)
 662 {
 663         char *cwd;
 664         char *ret;
 665
 666         cwd = SMB_CALLOC_ARRAY(char, PATH_MAX);
 667         if (cwd == NULL) {
 668                 return NULL;
 669         }
 670
 671         ret = glfs_getcwd(handle->data, cwd, PATH_MAX - 1);
 672         if (ret == 0) {
 673                 free(cwd);
 674         }
 675         return ret;
 676 }
 677
 678 static int vfs_gluster_ntimes(struct vfs_handle_struct *handle,
 679                               const struct smb_filename *smb_fname,
 680                               struct smb_file_time *ft)
 681 {
 682         struct timespec times[2];
 683
 684         if (null_timespec(ft->atime)) {
 685                 times[0].tv_sec = smb_fname->st.st_ex_atime.tv_sec;
 686                 times[0].tv_nsec = smb_fname->st.st_ex_atime.tv_nsec;
 687         } else {
 688                 times[0].tv_sec = ft->atime.tv_sec;
 689                 times[0].tv_nsec = ft->atime.tv_nsec;
 690         }
 691
 692         if (null_timespec(ft->mtime)) {
 693                 times[1].tv_sec = smb_fname->st.st_ex_mtime.tv_sec;
 694                 times[1].tv_nsec = smb_fname->st.st_ex_mtime.tv_nsec;
 695         } else {
 696                 times[1].tv_sec = ft->mtime.tv_sec;
 697                 times[1].tv_nsec = ft->mtime.tv_nsec;
 698         }
 699
 700         if ((timespec_compare(&times[0],
 701                               &smb_fname->st.st_ex_atime) == 0) &&
 702             (timespec_compare(&times[1],
 703                               &smb_fname->st.st_ex_mtime) == 0)) {
 704                 return 0;
 705         }
 706
 707         return glfs_utimens(handle->data, smb_fname->base_name, times);
 708 }
 709
 710 static int vfs_gluster_ftruncate(struct vfs_handle_struct *handle,
 711                                  files_struct *fsp, off_t offset)
 712 {
 713         return glfs_ftruncate(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), offset);
 714 }
 715
 716 static int vfs_gluster_fallocate(struct vfs_handle_struct *handle,
 717                                  struct files_struct *fsp,
 718                                  enum vfs_fallocate_mode mode,
 719                                  off_t offset, off_t len)
 720 {
 721         errno = ENOTSUP;
 722         return -1;
 723 }
 724
 725 static char *vfs_gluster_realpath(struct vfs_handle_struct *handle,
 726                                   const char *path)
 727 {
 728         return glfs_realpath(handle->data, path, 0);
 729 }
 730
 731 static bool vfs_gluster_lock(struct vfs_handle_struct *handle,
 732                              files_struct *fsp, int op, off_t offset,
 733                              off_t count, int type)
 734 {
 735         struct flock flock = { 0, };
 736         int ret;
 737
 738         flock.l_type = type;
 739         flock.l_whence = SEEK_SET;
 740         flock.l_start = offset;
 741         flock.l_len = count;
 742         flock.l_pid = 0;
 743
 744         ret = glfs_posix_lock(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), op, &flock);
 745
 746         if (op == F_GETLK) {
 747                 /* lock query, true if someone else has locked */
 748                 if ((ret != -1) &&
 749                     (flock.l_type != F_UNLCK) &&
 750                     (flock.l_pid != 0) && (flock.l_pid != getpid()))
 751                         return true;
 752                 /* not me */
 753                 return false;
 754         }
 755
 756         if (ret == -1) {
 757                 return false;
 758         }
 759
 760         return true;
 761 }
 762
 763 static int vfs_gluster_kernel_flock(struct vfs_handle_struct *handle,
 764                                     files_struct *fsp, uint32 share_mode,
 765                                     uint32_t access_mask)
 766 {
 767         errno = ENOSYS;
 768         return -1;
 769 }
 770
 771 static int vfs_gluster_linux_setlease(struct vfs_handle_struct *handle,
 772                                       files_struct *fsp, int leasetype)
 773 {
 774         errno = ENOSYS;
 775         return -1;
 776 }
 777
 778 static bool vfs_gluster_getlock(struct vfs_handle_struct *handle,
 779                                 files_struct *fsp, off_t *poffset,
 780                                 off_t *pcount, int *ptype, pid_t *ppid)
 781 {
 782         struct flock flock = { 0, };
 783         int ret;
 784
 785         flock.l_type = *ptype;
 786         flock.l_whence = SEEK_SET;
 787         flock.l_start = *poffset;
 788         flock.l_len = *pcount;
 789         flock.l_pid = 0;
 790
 791         ret = glfs_posix_lock(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), F_GETLK, &flock);
 792
 793         if (ret == -1) {
 794                 return false;
 795         }
 796
 797         *ptype = flock.l_type;
 798         *poffset = flock.l_start;
 799         *pcount = flock.l_len;
 800         *ppid = flock.l_pid;
 801
 802         return true;
 803 }
 804
 805 static int vfs_gluster_symlink(struct vfs_handle_struct *handle,
 806                                const char *oldpath, const char *newpath)
 807 {
 808         return glfs_symlink(handle->data, oldpath, newpath);
 809 }
 810
 811 static int vfs_gluster_readlink(struct vfs_handle_struct *handle,
 812                                 const char *path, char *buf, size_t bufsiz)
 813 {
 814         return glfs_readlink(handle->data, path, buf, bufsiz);
 815 }
 816
 817 static int vfs_gluster_link(struct vfs_handle_struct *handle,
 818                             const char *oldpath, const char *newpath)
 819 {
 820         return glfs_link(handle->data, oldpath, newpath);
 821 }
 822
 823 static int vfs_gluster_mknod(struct vfs_handle_struct *handle, const char *path,
 824                              mode_t mode, SMB_DEV_T dev)
 825 {
 826         return glfs_mknod(handle->data, path, mode, dev);
 827 }
 828
 829 static NTSTATUS vfs_gluster_notify_watch(struct vfs_handle_struct *handle,
 830                                          struct sys_notify_context *ctx,
 831                                          const char *path, uint32_t *filter,
 832                                          uint32_t *subdir_filter,
 833                                          void (*callback) (struct sys_notify_context *ctx,
 834                                                            void *private_data,
 835                                                            struct notify_event *ev),
 836                                          void *private_data, void *handle_p)
 837 {
 838         return NT_STATUS_NOT_IMPLEMENTED;
 839 }
 840
 841 static int vfs_gluster_chflags(struct vfs_handle_struct *handle,
 842                                const char *path, unsigned int flags)
 843 {
 844         errno = ENOSYS;
 845         return -1;
 846 }
 847
 848 static int vfs_gluster_get_real_filename(struct vfs_handle_struct *handle,
 849                                          const char *path, const char *name,
 850                                          TALLOC_CTX *mem_ctx, char **found_name)
 851 {
 852         int ret;
 853         char key_buf[NAME_MAX + 64];
 854         char val_buf[NAME_MAX + 1];
 855
 856         if (strlen(name) >= NAME_MAX) {
 857                 errno = ENAMETOOLONG;
 858                 return -1;
 859         }
 860
 861         snprintf(key_buf, NAME_MAX + 64,
 862                  "user.glusterfs.get_real_filename:%s", name);
 863
 864         ret = glfs_getxattr(handle->data, path, key_buf, val_buf, NAME_MAX + 1);
 865         if (ret == -1) {
 866                 if (errno == ENODATA) {
 867                         errno = EOPNOTSUPP;
 868                 }
 869                 return -1;
 870         }
 871
 872         *found_name = talloc_strdup(mem_ctx, val_buf);
 873         if (found_name[0] == NULL) {
 874                 errno = ENOMEM;
 875                 return -1;
 876         }
 877         return 0;
 878 }
 879
 880 static const char *vfs_gluster_connectpath(struct vfs_handle_struct *handle,
 881                                            const char *filename)
 882 {
 883         return handle->conn->connectpath;
 884 }
 885
 886 /* EA Operations */
 887
 888 static ssize_t vfs_gluster_getxattr(struct vfs_handle_struct *handle,
 889                                     const char *path, const char *name,
 890                                     void *value, size_t size)
 891 {
 892         return glfs_getxattr(handle->data, path, name, value, size);
 893 }
 894
 895 static ssize_t vfs_gluster_fgetxattr(struct vfs_handle_struct *handle,
 896                                      files_struct *fsp, const char *name,
 897                                      void *value, size_t size)
 898 {
 899         return glfs_fgetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name, value, size);
 900 }
 901
 902 static ssize_t vfs_gluster_listxattr(struct vfs_handle_struct *handle,
 903                                      const char *path, char *list, size_t size)
 904 {
 905         return glfs_listxattr(handle->data, path, list, size);
 906 }
 907
 908 static ssize_t vfs_gluster_flistxattr(struct vfs_handle_struct *handle,
 909                                       files_struct *fsp, char *list,
 910                                       size_t size)
 911 {
 912         return glfs_flistxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), list, size);
 913 }
 914
 915 static int vfs_gluster_removexattr(struct vfs_handle_struct *handle,
 916                                    const char *path, const char *name)
 917 {
 918         return glfs_removexattr(handle->data, path, name);
 919 }
 920
 921 static int vfs_gluster_fremovexattr(struct vfs_handle_struct *handle,
 922                                     files_struct *fsp, const char *name)
 923 {
 924         return glfs_fremovexattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name);
 925 }
 926
 927 static int vfs_gluster_setxattr(struct vfs_handle_struct *handle,
 928                                 const char *path, const char *name,
 929                                 const void *value, size_t size, int flags)
 930 {
 931         return glfs_setxattr(handle->data, path, name, value, size, flags);
 932 }
 933
 934 static int vfs_gluster_fsetxattr(struct vfs_handle_struct *handle,
 935                                  files_struct *fsp, const char *name,
 936                                  const void *value, size_t size, int flags)
 937 {
 938         return glfs_fsetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp), name, value, size,
 939                               flags);
 940 }
 941
 942 /* AIO Operations */
 943
 944 static bool vfs_gluster_aio_force(struct vfs_handle_struct *handle,
 945                                   files_struct *fsp)
 946 {
 947         return false;
 948 }
 949
 950 /* Offline Operations */
 951
 952 static bool vfs_gluster_is_offline(struct vfs_handle_struct *handle,
 953                                    const struct smb_filename *fname,
 954                                    SMB_STRUCT_STAT *sbuf)
 955 {
 956         return false;
 957 }
 958
 959 static int vfs_gluster_set_offline(struct vfs_handle_struct *handle,
 960                                    const struct smb_filename *fname)
 961 {
 962         errno = ENOTSUP;
 963         return -1;
 964 }
 965
 966 /*
 967   Gluster ACL Format:
 968
 969   Size = 4 (header) + N * 8 (entry)
 970
 971   Offset  Size    Field (Little Endian)
 972   -------------------------------------
 973   0-3     4-byte  Version
 974
 975   4-5     2-byte  Entry-1 tag
 976   6-7     2-byte  Entry-1 perm
 977   8-11    4-byte  Entry-1 id
 978
 979   12-13   2-byte  Entry-2 tag
 980   14-15   2-byte  Entry-2 perm
 981   16-19   4-byte  Entry-2 id
 982
 983   ...
 984
 985  */
 986
 987 /* header version */
 988 #define GLUSTER_ACL_VERSION 2
 989
 990 /* perm bits */
 991 #define GLUSTER_ACL_READ    0x04
 992 #define GLUSTER_ACL_WRITE   0x02
 993 #define GLUSTER_ACL_EXECUTE 0x01
 994
 995 /* tag values */
 996 #define GLUSTER_ACL_UNDEFINED_TAG  0x00
 997 #define GLUSTER_ACL_USER_OBJ       0x01
 998 #define GLUSTER_ACL_USER           0x02
 999 #define GLUSTER_ACL_GROUP_OBJ      0x04
1000 #define GLUSTER_ACL_GROUP          0x08
1001 #define GLUSTER_ACL_MASK           0x10
1002 #define GLUSTER_ACL_OTHER          0x20
1003
1004 #define GLUSTER_ACL_UNDEFINED_ID  (-1)
1005
1006 #define GLUSTER_ACL_HEADER_SIZE    4
1007 #define GLUSTER_ACL_ENTRY_SIZE     8
1008
1009 static SMB_ACL_T gluster_to_smb_acl(const char *buf, size_t xattr_size,
1010                                     TALLOC_CTX *mem_ctx)
1011 {
1012         int count;
1013         size_t size;
1014         struct smb_acl_entry *smb_ace;
1015         struct smb_acl_t *result;
1016         int i;
1017         int offset;
1018         uint16_t tag;
1019         uint16_t perm;
1020         uint32_t id;
1021
1022         size = xattr_size;
1023
1024         if (size < GLUSTER_ACL_HEADER_SIZE) {
1025                 /* ACL should be at least as big as the header (4 bytes) */
1026                 errno = EINVAL;
1027                 return NULL;
1028         }
1029
1030         size -= GLUSTER_ACL_HEADER_SIZE; /* size of header = 4 bytes */
1031
1032         if (size % GLUSTER_ACL_ENTRY_SIZE) {
1033                 /* Size of entries must strictly be a multiple of
1034                    size of an ACE (8 bytes)
1035                 */
1036                 errno = EINVAL;
1037                 return NULL;
1038         }
1039
1040         count = size / GLUSTER_ACL_ENTRY_SIZE;
1041
1042         /* Version is the first 4 bytes of the ACL */
1043         if (IVAL(buf, 0) != GLUSTER_ACL_VERSION) {
1044                 DEBUG(0, ("Unknown gluster ACL version: %d\n",
1045                           IVAL(buf, 0)));
1046                 return NULL;
1047         }
1048         offset = GLUSTER_ACL_HEADER_SIZE;
1049
1050         result = sys_acl_init(mem_ctx);
1051         if (!result) {
1052                 errno = ENOMEM;
1053                 return NULL;
1054         }
1055
1056         result->acl = talloc_array(result, struct smb_acl_entry, count);
1057         if (!result->acl) {
1058                 errno = ENOMEM;
1059                 talloc_free(result);
1060                 return NULL;
1061         }
1062
1063         result->count = count;
1064
1065         smb_ace = result->acl;
1066
1067         for (i = 0; i < count; i++) {
1068                 /* TAG is the first 2 bytes of an entry */
1069                 tag = SVAL(buf, offset);
1070                 offset += 2;
1071
1072                 /* PERM is the next 2 bytes of an entry */
1073                 perm = SVAL(buf, offset);
1074                 offset += 2;
1075
1076                 /* ID is the last 4 bytes of an entry */
1077                 id = IVAL(buf, offset);
1078                 offset += 4;
1079
1080                 switch(tag) {
1081                 case GLUSTER_ACL_USER:
1082                         smb_ace->a_type = SMB_ACL_USER;
1083                         break;
1084                 case GLUSTER_ACL_USER_OBJ:
1085                         smb_ace->a_type = SMB_ACL_USER_OBJ;
1086                         break;
1087                 case GLUSTER_ACL_GROUP:
1088                         smb_ace->a_type = SMB_ACL_GROUP;
1089                         break;
1090                 case GLUSTER_ACL_GROUP_OBJ:
1091                         smb_ace->a_type = SMB_ACL_GROUP_OBJ;
1092                         break;
1093                 case GLUSTER_ACL_OTHER:
1094                         smb_ace->a_type = SMB_ACL_OTHER;
1095                         break;
1096                 case GLUSTER_ACL_MASK:
1097                         smb_ace->a_type = SMB_ACL_MASK;
1098                         break;
1099                 default:
1100                         DEBUG(0, ("unknown tag type %d\n", (unsigned int) tag));
1101                         return NULL;
1102                 }
1103
1104
1105                 switch(smb_ace->a_type) {
1106                 case SMB_ACL_USER:
1107                         smb_ace->info.user.uid = id;
1108                         break;
1109                 case SMB_ACL_GROUP:
1110                         smb_ace->info.group.gid = id;
1111                         break;
1112                 default:
1113                         break;
1114                 }
1115
1116                 smb_ace->a_perm = 0;
1117                 smb_ace->a_perm |=
1118                         ((perm & GLUSTER_ACL_READ) ? SMB_ACL_READ : 0);
1119                 smb_ace->a_perm |=
1120                         ((perm & GLUSTER_ACL_WRITE) ? SMB_ACL_WRITE : 0);
1121                 smb_ace->a_perm |=
1122                         ((perm & GLUSTER_ACL_EXECUTE) ? SMB_ACL_EXECUTE : 0);
1123
1124                 smb_ace++;
1125         }
1126
1127         return result;
1128 }
1129
1130
1131 static int gluster_ace_cmp(const void *left, const void *right)
1132 {
1133         int ret = 0;
1134         uint16_t tag_left, tag_right;
1135         uint32_t id_left, id_right;
1136
1137         /*
1138           Sorting precedence:
1139
1140            - Smaller TAG values must be earlier.
1141
1142            - Within same TAG, smaller identifiers must be earlier, E.g:
1143              UID 0 entry must be earlier than UID 200
1144              GID 17 entry must be earlier than GID 19
1145         */
1146
1147         /* TAG is the first element in the entry */
1148         tag_left = SVAL(left, 0);
1149         tag_right = SVAL(right, 0);
1150
1151         ret = (tag_left - tag_right);
1152         if (!ret) {
1153                 /* ID is the third element in the entry, after two short
1154                    integers (tag and perm), i.e at offset 4.
1155                 */
1156                 id_left = IVAL(left, 4);
1157                 id_right = IVAL(right, 4);
1158                 ret = id_left - id_right;
1159         }
1160
1161         return ret;
1162 }
1163
1164
1165 static ssize_t smb_to_gluster_acl(SMB_ACL_T theacl, char *buf, size_t len)
1166 {
1167         ssize_t size;
1168         struct smb_acl_entry *smb_ace;
1169         int i;
1170         int count;
1171         uint16_t tag;
1172         uint16_t perm;
1173         uint32_t id;
1174         int offset;
1175
1176         count = theacl->count;
1177
1178         size = GLUSTER_ACL_HEADER_SIZE + (count * GLUSTER_ACL_ENTRY_SIZE);
1179         if (!buf) {
1180                 return size;
1181         }
1182
1183         if (len < size) {
1184                 errno = ERANGE;
1185                 return -1;
1186         }
1187
1188         smb_ace = theacl->acl;
1189
1190         /* Version is the first 4 bytes of the ACL */
1191         SIVAL(buf, 0, GLUSTER_ACL_VERSION);
1192         offset = GLUSTER_ACL_HEADER_SIZE;
1193
1194         for (i = 0; i < count; i++) {
1195                 /* Calculate tag */
1196                 switch(smb_ace->a_type) {
1197                 case SMB_ACL_USER:
1198                         tag = GLUSTER_ACL_USER;
1199                         break;
1200                 case SMB_ACL_USER_OBJ:
1201                         tag = GLUSTER_ACL_USER_OBJ;
1202                         break;
1203                 case SMB_ACL_GROUP:
1204                         tag = GLUSTER_ACL_GROUP;
1205                         break;
1206                 case SMB_ACL_GROUP_OBJ:
1207                         tag = GLUSTER_ACL_GROUP_OBJ;
1208                         break;
1209                 case SMB_ACL_OTHER:
1210                         tag = GLUSTER_ACL_OTHER;
1211                         break;
1212                 case SMB_ACL_MASK:
1213                         tag = GLUSTER_ACL_MASK;
1214                         break;
1215                 default:
1216                         DEBUG(0, ("Unknown tag value %d\n",
1217                                   smb_ace->a_type));
1218                         errno = EINVAL;
1219                         return -1;
1220                 }
1221
1222
1223                 /* Calculate id */
1224                 switch(smb_ace->a_type) {
1225                 case SMB_ACL_USER:
1226                         id = smb_ace->info.user.uid;
1227                         break;
1228                 case SMB_ACL_GROUP:
1229                         id = smb_ace->info.group.gid;
1230                         break;
1231                 default:
1232                         id = GLUSTER_ACL_UNDEFINED_ID;
1233                         break;
1234                 }
1235
1236                 /* Calculate perm */
1237                 perm = 0;
1238
1239                 perm |=
1240                         ((smb_ace->a_perm & SMB_ACL_READ) ? GLUSTER_ACL_READ : 0);
1241                 perm |=
1242                         ((smb_ace->a_perm & SMB_ACL_WRITE) ? GLUSTER_ACL_WRITE : 0);
1243                 perm |=
1244                         ((smb_ace->a_perm & SMB_ACL_EXECUTE) ? GLUSTER_ACL_EXECUTE : 0);
1245
1246
1247                 /* TAG is the first 2 bytes of an entry */
1248                 SSVAL(buf, offset, tag);
1249                 offset += 2;
1250
1251                 /* PERM is the next 2 bytes of an entry */
1252                 SSVAL(buf, offset, perm);
1253                 offset += 2;
1254
1255                 /* ID is the last 4 bytes of an entry */
1256                 SIVAL(buf, offset, id);
1257                 offset += 4;
1258
1259                 smb_ace++;
1260         }
1261
1262         /* Skip the header, sort @count number of 8-byte entries */
1263         qsort(buf+GLUSTER_ACL_HEADER_SIZE, count, GLUSTER_ACL_ENTRY_SIZE,
1264               gluster_ace_cmp);
1265
1266         return size;
1267 }
1268
1269
1270 static SMB_ACL_T vfs_gluster_sys_acl_get_file(struct vfs_handle_struct *handle,
1271                                               const char *path_p,
1272                                               SMB_ACL_TYPE_T type,
1273                                               TALLOC_CTX *mem_ctx)
1274 {
1275         struct smb_acl_t *result;
1276         char *buf;
1277         const char *key;
1278         ssize_t ret;
1279
1280         switch (type) {
1281         case SMB_ACL_TYPE_ACCESS:
1282                 key = "system.posix_acl_access";
1283                 break;
1284         case SMB_ACL_TYPE_DEFAULT:
1285                 key = "system.posix_acl_default";
1286                 break;
1287         default:
1288                 errno = EINVAL;
1289                 return NULL;
1290         }
1291
1292         ret = glfs_getxattr(handle->data, path_p, key, 0, 0);
1293         if (ret <= 0) {
1294                 return NULL;
1295         }
1296
1297         buf = alloca(ret);
1298         ret = glfs_getxattr(handle->data, path_p, key, buf, ret);
1299         if (ret <= 0) {
1300                 return NULL;
1301         }
1302
1303         result = gluster_to_smb_acl(buf, ret, mem_ctx);
1304
1305         return result;
1306 }
1307
1308 static SMB_ACL_T vfs_gluster_sys_acl_get_fd(struct vfs_handle_struct *handle,
1309                                             struct files_struct *fsp,
1310                                             TALLOC_CTX *mem_ctx)
1311 {
1312         struct smb_acl_t *result;
1313         int ret;
1314         char *buf;
1315         glfs_fd_t *glfd;
1316
1317         glfd = *(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
1318         ret = glfs_fgetxattr(glfd, "system.posix_acl_access", 0, 0);
1319         if (ret <= 0) {
1320                 return NULL;
1321         }
1322
1323         buf = alloca(ret);
1324         ret = glfs_fgetxattr(glfd, "system.posix_acl_access", 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 int vfs_gluster_sys_acl_set_file(struct vfs_handle_struct *handle,
1335                                         const char *name,
1336                                         SMB_ACL_TYPE_T acltype,
1337                                         SMB_ACL_T theacl)
1338 {
1339         int ret;
1340         const char *key;
1341         char *buf;
1342         ssize_t size;
1343
1344         switch (acltype) {
1345         case SMB_ACL_TYPE_ACCESS:
1346                 key = "system.posix_acl_access";
1347                 break;
1348         case SMB_ACL_TYPE_DEFAULT:
1349                 key = "system.posix_acl_default";
1350                 break;
1351         default:
1352                 errno = EINVAL;
1353                 return -1;
1354         }
1355
1356         size = smb_to_gluster_acl(theacl, 0, 0);
1357         buf = alloca(size);
1358
1359         size = smb_to_gluster_acl(theacl, buf, size);
1360         if (size == -1) {
1361                 return -1;
1362         }
1363
1364         ret = glfs_setxattr(handle->data, name, key, buf, size, 0);
1365
1366         return ret;
1367 }
1368
1369 static int vfs_gluster_sys_acl_set_fd(struct vfs_handle_struct *handle,
1370                                       struct files_struct *fsp,
1371                                       SMB_ACL_T theacl)
1372 {
1373         int ret;
1374         char *buf;
1375         ssize_t size;
1376
1377         size = smb_to_gluster_acl(theacl, 0, 0);
1378         buf = alloca(size);
1379
1380         size = smb_to_gluster_acl(theacl, buf, size);
1381         if (size == -1) {
1382                 return -1;
1383         }
1384
1385         ret = glfs_fsetxattr(*(glfs_fd_t **)VFS_FETCH_FSP_EXTENSION(handle, fsp),
1386                              "system.posix_acl_access", buf, size, 0);
1387         return ret;
1388 }
1389
1390 static int vfs_gluster_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
1391                                                const char *path)
1392 {
1393         return glfs_removexattr(handle->data, path, "system.posix_acl_default");
1394 }
1395
1396 static struct vfs_fn_pointers glusterfs_fns = {
1397
1398         /* Disk Operations */
1399
1400         .connect_fn = vfs_gluster_connect,
1401         .disconnect_fn = vfs_gluster_disconnect,
1402         .disk_free_fn = vfs_gluster_disk_free,
1403         .get_quota_fn = vfs_gluster_get_quota,
1404         .set_quota_fn = vfs_gluster_set_quota,
1405         .statvfs_fn = vfs_gluster_statvfs,
1406         .fs_capabilities_fn = vfs_gluster_fs_capabilities,
1407
1408         .get_dfs_referrals_fn = NULL,
1409
1410         /* Directory Operations */
1411
1412         .opendir_fn = vfs_gluster_opendir,
1413         .fdopendir_fn = vfs_gluster_fdopendir,
1414         .readdir_fn = vfs_gluster_readdir,
1415         .seekdir_fn = vfs_gluster_seekdir,
1416         .telldir_fn = vfs_gluster_telldir,
1417         .rewind_dir_fn = vfs_gluster_rewinddir,
1418         .mkdir_fn = vfs_gluster_mkdir,
1419         .rmdir_fn = vfs_gluster_rmdir,
1420         .closedir_fn = vfs_gluster_closedir,
1421         .init_search_op_fn = vfs_gluster_init_search_op,
1422
1423         /* File Operations */
1424
1425         .open_fn = vfs_gluster_open,
1426         .create_file_fn = NULL,
1427         .close_fn = vfs_gluster_close,
1428         .read_fn = vfs_gluster_read,
1429         .pread_fn = vfs_gluster_pread,
1430         .pread_send_fn = vfs_gluster_pread_send,
1431         .pread_recv_fn = vfs_gluster_pread_recv,
1432         .write_fn = vfs_gluster_write,
1433         .pwrite_fn = vfs_gluster_pwrite,
1434         .pwrite_send_fn = vfs_gluster_pwrite_send,
1435         .pwrite_recv_fn = vfs_gluster_pwrite_recv,
1436         .lseek_fn = vfs_gluster_lseek,
1437         .sendfile_fn = vfs_gluster_sendfile,
1438         .recvfile_fn = vfs_gluster_recvfile,
1439         .rename_fn = vfs_gluster_rename,
1440         .fsync_fn = vfs_gluster_fsync,
1441         .fsync_send_fn = vfs_gluster_fsync_send,
1442         .fsync_recv_fn = vfs_gluster_fsync_recv,
1443
1444         .stat_fn = vfs_gluster_stat,
1445         .fstat_fn = vfs_gluster_fstat,
1446         .lstat_fn = vfs_gluster_lstat,
1447         .get_alloc_size_fn = vfs_gluster_get_alloc_size,
1448         .unlink_fn = vfs_gluster_unlink,
1449
1450         .chmod_fn = vfs_gluster_chmod,
1451         .fchmod_fn = vfs_gluster_fchmod,
1452         .chown_fn = vfs_gluster_chown,
1453         .fchown_fn = vfs_gluster_fchown,
1454         .lchown_fn = vfs_gluster_lchown,
1455         .chdir_fn = vfs_gluster_chdir,
1456         .getwd_fn = vfs_gluster_getwd,
1457         .ntimes_fn = vfs_gluster_ntimes,
1458         .ftruncate_fn = vfs_gluster_ftruncate,
1459         .fallocate_fn = vfs_gluster_fallocate,
1460         .lock_fn = vfs_gluster_lock,
1461         .kernel_flock_fn = vfs_gluster_kernel_flock,
1462         .linux_setlease_fn = vfs_gluster_linux_setlease,
1463         .getlock_fn = vfs_gluster_getlock,
1464         .symlink_fn = vfs_gluster_symlink,
1465         .readlink_fn = vfs_gluster_readlink,
1466         .link_fn = vfs_gluster_link,
1467         .mknod_fn = vfs_gluster_mknod,
1468         .realpath_fn = vfs_gluster_realpath,
1469         .notify_watch_fn = vfs_gluster_notify_watch,
1470         .chflags_fn = vfs_gluster_chflags,
1471         .file_id_create_fn = NULL,
1472         .copy_chunk_send_fn = NULL,
1473         .copy_chunk_recv_fn = NULL,
1474         .streaminfo_fn = NULL,
1475         .get_real_filename_fn = vfs_gluster_get_real_filename,
1476         .connectpath_fn = vfs_gluster_connectpath,
1477
1478         .brl_lock_windows_fn = NULL,
1479         .brl_unlock_windows_fn = NULL,
1480         .brl_cancel_windows_fn = NULL,
1481         .strict_lock_fn = NULL,
1482         .strict_unlock_fn = NULL,
1483         .translate_name_fn = NULL,
1484         .fsctl_fn = NULL,
1485
1486         /* NT ACL Operations */
1487         .fget_nt_acl_fn = NULL,
1488         .get_nt_acl_fn = NULL,
1489         .fset_nt_acl_fn = NULL,
1490         .audit_file_fn = NULL,
1491
1492         /* Posix ACL Operations */
1493         .chmod_acl_fn = NULL,   /* passthrough to default */
1494         .fchmod_acl_fn = NULL,  /* passthrough to default */
1495         .sys_acl_get_file_fn = vfs_gluster_sys_acl_get_file,
1496         .sys_acl_get_fd_fn = vfs_gluster_sys_acl_get_fd,
1497         .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
1498         .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
1499         .sys_acl_set_file_fn = vfs_gluster_sys_acl_set_file,
1500         .sys_acl_set_fd_fn = vfs_gluster_sys_acl_set_fd,
1501         .sys_acl_delete_def_file_fn = vfs_gluster_sys_acl_delete_def_file,
1502
1503         /* EA Operations */
1504         .getxattr_fn = vfs_gluster_getxattr,
1505         .fgetxattr_fn = vfs_gluster_fgetxattr,
1506         .listxattr_fn = vfs_gluster_listxattr,
1507         .flistxattr_fn = vfs_gluster_flistxattr,
1508         .removexattr_fn = vfs_gluster_removexattr,
1509         .fremovexattr_fn = vfs_gluster_fremovexattr,
1510         .setxattr_fn = vfs_gluster_setxattr,
1511         .fsetxattr_fn = vfs_gluster_fsetxattr,
1512
1513         /* AIO Operations */
1514         .aio_force_fn = vfs_gluster_aio_force,
1515
1516         /* Offline Operations */
1517         .is_offline_fn = vfs_gluster_is_offline,
1518         .set_offline_fn = vfs_gluster_set_offline,
1519
1520         /* Durable handle Operations */
1521         .durable_cookie_fn = NULL,
1522         .durable_disconnect_fn = NULL,
1523         .durable_reconnect_fn = NULL,
1524 };
1525
1526 NTSTATUS vfs_glusterfs_init(void);
1527 NTSTATUS vfs_glusterfs_init(void)
1528 {
1529         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1530                                 "glusterfs", &glusterfs_fns);
1531 }