source3/modules/vfs_ceph.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Wrap disk only vfs functions to sidestep dodgy compilers.
   4    Copyright (C) Tim Potter 1998
   5    Copyright (C) Jeremy Allison 2007
   6    Copyright (C) Brian Chrisman 2011 <bchrisman@gmail.com>
   7    Copyright (C) Richard Sharpe 2011 <realrichardsharpe@gmail.com>
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 /*
  24  * This VFS only works with the libcephfs.so user-space client. It is not needed
  25  * if you are using the kernel client or the FUSE client.
  26  *
  27  * Add the following smb.conf parameter to each share that will be hosted on
  28  * Ceph:
  29  *
  30  *   vfs objects = [any others you need go here] ceph
  31  */
  32
  33 #include "includes.h"
  34 #include "smbd/smbd.h"
  35 #include "system/filesys.h"
  36 #include <dirent.h>
  37 #include <sys/statvfs.h>
  38 #include "cephfs/libcephfs.h"
  39 #include "smbprofile.h"
  40 #include "modules/posixacl_xattr.h"
  41 #include "lib/util/tevent_unix.h"
  42
  43 #undef DBGC_CLASS
  44 #define DBGC_CLASS DBGC_VFS
  45
  46 #ifndef LIBCEPHFS_VERSION
  47 #define LIBCEPHFS_VERSION(maj, min, extra) ((maj << 16) + (min << 8) + extra)
  48 #define LIBCEPHFS_VERSION_CODE LIBCEPHFS_VERSION(0, 0, 0)
  49 #endif
  50
  51 /*
  52  * Use %llu whenever we have a 64bit unsigned int, and cast to (long long unsigned)
  53  */
  54 #define llu(_var) ((long long unsigned)_var)
  55
  56 /*
  57  * Note, libcephfs's return code model is to return -errno! So we have to
  58  * convert to what Samba expects, which is to set errno to -return and return -1
  59  */
  60 #define WRAP_RETURN(_res) \
  61         errno = 0; \
  62         if (_res < 0) { \
  63                 errno = -_res; \
  64                 return -1; \
  65         } \
  66         return _res \
  67
  68 /*
  69  * Track unique connections, as virtual mounts, to cephfs file systems.
  70  * Individual mounts will be set on the handle->data attribute, but
  71  * the mounts themselves will be shared so as not to spawn extra mounts
  72  * to the same cephfs.
  73  *
  74  * Individual mounts are IDed by a 'cookie' value that is a string built
  75  * from identifying parameters found in smb.conf.
  76  */
  77
  78 static struct cephmount_cached {
  79         char *cookie;
  80         uint32_t count;
  81         struct ceph_mount_info *mount;
  82         struct cephmount_cached *next, *prev;
  83 } *cephmount_cached;
  84
  85 static int cephmount_cache_add(const char *cookie,
  86                                struct ceph_mount_info *mount)
  87 {
  88         struct cephmount_cached *entry = NULL;
  89
  90         entry = talloc_zero(NULL, struct cephmount_cached);
  91         if (entry == NULL) {
  92                 errno = ENOMEM;
  93                 return -1;
  94         }
  95
  96         entry->cookie = talloc_strdup(entry, cookie);
  97         if (entry->cookie == NULL) {
  98                 talloc_free(entry);
  99                 errno = ENOMEM;
 100                 return -1;
 101         }
 102
 103         entry->mount = mount;
 104         entry->count = 1;
 105
 106         DBG_DEBUG("adding mount cache entry for %s\n", entry->cookie);
 107         DLIST_ADD(cephmount_cached, entry);
 108         return 0;
 109 }
 110
 111 static struct ceph_mount_info *cephmount_cache_update(const char *cookie)
 112 {
 113         struct cephmount_cached *entry = NULL;
 114
 115         for (entry = cephmount_cached; entry; entry = entry->next) {
 116                 if (strcmp(entry->cookie, cookie) == 0) {
 117                         entry->count++;
 118                         DBG_DEBUG("updated mount cache: count is [%"
 119                                   PRIu32 "]\n", entry->count);
 120                         return entry->mount;
 121                 }
 122         }
 123
 124         errno = ENOENT;
 125         return NULL;
 126 }
 127
 128 static int cephmount_cache_remove(struct ceph_mount_info *mount)
 129 {
 130         struct cephmount_cached *entry = NULL;
 131
 132         for (entry = cephmount_cached; entry; entry = entry->next) {
 133                 if (entry->mount == mount) {
 134                         if (--entry->count) {
 135                                 DBG_DEBUG("updated mount cache: count is [%"
 136                                           PRIu32 "]\n", entry->count);
 137                                 return entry->count;
 138                         }
 139
 140                         DBG_DEBUG("removing mount cache entry for %s\n",
 141                                   entry->cookie);
 142                         DLIST_REMOVE(cephmount_cached, entry);
 143                         talloc_free(entry);
 144                         return 0;
 145                 }
 146         }
 147         errno = ENOENT;
 148         return -1;
 149 }
 150
 151 static char *cephmount_get_cookie(TALLOC_CTX * mem_ctx, const int snum)
 152 {
 153         const char *conf_file =
 154             lp_parm_const_string(snum, "ceph", "config_file", ".");
 155         const char *user_id = lp_parm_const_string(snum, "ceph", "user_id", "");
 156         const char *fsname =
 157             lp_parm_const_string(snum, "ceph", "filesystem", "");
 158         return talloc_asprintf(mem_ctx, "(%s/%s/%s)", conf_file, user_id,
 159                                fsname);
 160 }
 161
 162 static int cephmount_select_fs(struct ceph_mount_info *mnt, const char *fsname)
 163 {
 164         /*
 165          * ceph_select_filesystem was added in ceph 'nautilus' (v14).
 166          * Earlier versions of libcephfs will lack that API function.
 167          * At the time of this writing (Feb 2023) all versions of ceph
 168          * supported by ceph upstream have this function.
 169          */
 170 #if defined(HAVE_CEPH_SELECT_FILESYSTEM)
 171         DBG_DEBUG("[CEPH] calling: ceph_select_filesystem with %s\n", fsname);
 172         return ceph_select_filesystem(mnt, fsname);
 173 #else
 174         DBG_ERR("[CEPH] ceph_select_filesystem not available\n");
 175         return -ENOTSUP;
 176 #endif
 177 }
 178
 179 static struct ceph_mount_info *cephmount_mount_fs(const int snum)
 180 {
 181         int ret;
 182         char buf[256];
 183         struct ceph_mount_info *mnt = NULL;
 184         /* if config_file and/or user_id are NULL, ceph will use defaults */
 185         const char *conf_file =
 186             lp_parm_const_string(snum, "ceph", "config_file", NULL);
 187         const char *user_id =
 188             lp_parm_const_string(snum, "ceph", "user_id", NULL);
 189         const char *fsname =
 190             lp_parm_const_string(snum, "ceph", "filesystem", NULL);
 191
 192         DBG_DEBUG("[CEPH] calling: ceph_create\n");
 193         ret = ceph_create(&mnt, user_id);
 194         if (ret) {
 195                 errno = -ret;
 196                 return NULL;
 197         }
 198
 199         DBG_DEBUG("[CEPH] calling: ceph_conf_read_file with %s\n",
 200                   (conf_file == NULL ? "default path" : conf_file));
 201         ret = ceph_conf_read_file(mnt, conf_file);
 202         if (ret) {
 203                 goto err_cm_release;
 204         }
 205
 206         DBG_DEBUG("[CEPH] calling: ceph_conf_get\n");
 207         ret = ceph_conf_get(mnt, "log file", buf, sizeof(buf));
 208         if (ret < 0) {
 209                 goto err_cm_release;
 210         }
 211
 212         /* libcephfs disables POSIX ACL support by default, enable it... */
 213         ret = ceph_conf_set(mnt, "client_acl_type", "posix_acl");
 214         if (ret < 0) {
 215                 goto err_cm_release;
 216         }
 217         /* tell libcephfs to perform local permission checks */
 218         ret = ceph_conf_set(mnt, "fuse_default_permissions", "false");
 219         if (ret < 0) {
 220                 goto err_cm_release;
 221         }
 222         /*
 223          * select a cephfs file system to use:
 224          * In ceph, multiple file system support has been stable since 'pacific'.
 225          * Permit different shares to access different file systems.
 226          */
 227         if (fsname != NULL) {
 228                 ret = cephmount_select_fs(mnt, fsname);
 229                 if (ret < 0) {
 230                         goto err_cm_release;
 231                 }
 232         }
 233
 234         DBG_DEBUG("[CEPH] calling: ceph_mount\n");
 235         ret = ceph_mount(mnt, NULL);
 236         if (ret >= 0) {
 237                 goto cm_done;
 238         }
 239
 240       err_cm_release:
 241         ceph_release(mnt);
 242         mnt = NULL;
 243         DBG_DEBUG("[CEPH] Error mounting fs: %s\n", strerror(-ret));
 244       cm_done:
 245         /*
 246          * Handle the error correctly. Ceph returns -errno.
 247          */
 248         if (ret) {
 249                 errno = -ret;
 250         }
 251         return mnt;
 252 }
 253
 254 /* Check for NULL pointer parameters in cephwrap_* functions */
 255
 256 /* We don't want to have NULL function pointers lying around.  Someone
 257    is sure to try and execute them.  These stubs are used to prevent
 258    this possibility. */
 259
 260 static int cephwrap_connect(struct vfs_handle_struct *handle,
 261                             const char *service, const char *user)
 262 {
 263         int ret = 0;
 264         struct ceph_mount_info *cmount = NULL;
 265         int snum = SNUM(handle->conn);
 266         char *cookie = cephmount_get_cookie(handle, snum);
 267         if (cookie == NULL) {
 268                 return -1;
 269         }
 270
 271         cmount = cephmount_cache_update(cookie);
 272         if (cmount != NULL) {
 273                 goto connect_ok;
 274         }
 275
 276         cmount = cephmount_mount_fs(snum);
 277         if (cmount == NULL) {
 278                 ret = -1;
 279                 goto connect_fail;
 280         }
 281         ret = cephmount_cache_add(cookie, cmount);
 282         if (ret) {
 283                 goto connect_fail;
 284         }
 285
 286       connect_ok:
 287         handle->data = cmount;
 288         DBG_WARNING("Connection established with the server: %s\n", cookie);
 289         /*
 290          * Unless we have an async implementation of getxattrat turn this off.
 291          */
 292         lp_do_parameter(SNUM(handle->conn), "smbd async dosmode", "false");
 293       connect_fail:
 294         talloc_free(cookie);
 295         return ret;
 296 }
 297
 298 static void cephwrap_disconnect(struct vfs_handle_struct *handle)
 299 {
 300         int ret = cephmount_cache_remove(handle->data);
 301         if (ret < 0) {
 302                 DBG_ERR("failed to remove ceph mount from cache: %s\n",
 303                         strerror(errno));
 304                 return;
 305         }
 306         if (ret > 0) {
 307                 DBG_DEBUG("mount cache entry still in use\n");
 308                 return;
 309         }
 310
 311         ret = ceph_unmount(handle->data);
 312         if (ret < 0) {
 313                 DBG_ERR("[CEPH] failed to unmount: %s\n", strerror(-ret));
 314         }
 315
 316         ret = ceph_release(handle->data);
 317         if (ret < 0) {
 318                 DBG_ERR("[CEPH] failed to release: %s\n", strerror(-ret));
 319         }
 320         handle->data = NULL;
 321 }
 322
 323 /* Disk operations */
 324
 325 static uint64_t cephwrap_disk_free(struct vfs_handle_struct *handle,
 326                                 const struct smb_filename *smb_fname,
 327                                 uint64_t *bsize,
 328                                 uint64_t *dfree,
 329                                 uint64_t *dsize)
 330 {
 331         struct statvfs statvfs_buf = { 0 };
 332         int ret;
 333
 334         if (!(ret = ceph_statfs(handle->data, smb_fname->base_name,
 335                         &statvfs_buf))) {
 336                 /*
 337                  * Provide all the correct values.
 338                  */
 339                 *bsize = statvfs_buf.f_bsize;
 340                 *dfree = statvfs_buf.f_bavail;
 341                 *dsize = statvfs_buf.f_blocks;
 342                 DBG_DEBUG("[CEPH] bsize: %llu, dfree: %llu, dsize: %llu\n",
 343                         llu(*bsize), llu(*dfree), llu(*dsize));
 344                 return *dfree;
 345         } else {
 346                 DBG_DEBUG("[CEPH] ceph_statfs returned %d\n", ret);
 347                 WRAP_RETURN(ret);
 348         }
 349 }
 350
 351 static int cephwrap_get_quota(struct vfs_handle_struct *handle,
 352                                 const struct smb_filename *smb_fname,
 353                                 enum SMB_QUOTA_TYPE qtype,
 354                                 unid_t id,
 355                                 SMB_DISK_QUOTA *qt)
 356 {
 357         /* libcephfs: Ceph does not implement this */
 358 #if 0
 359 /* was ifdef HAVE_SYS_QUOTAS */
 360         int ret;
 361
 362         ret = ceph_get_quota(handle->conn->connectpath, qtype, id, qt);
 363
 364         if (ret) {
 365                 errno = -ret;
 366                 ret = -1;
 367         }
 368
 369         return ret;
 370 #else
 371         errno = ENOSYS;
 372         return -1;
 373 #endif
 374 }
 375
 376 static int cephwrap_set_quota(struct vfs_handle_struct *handle,  enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
 377 {
 378         /* libcephfs: Ceph does not implement this */
 379 #if 0
 380 /* was ifdef HAVE_SYS_QUOTAS */
 381         int ret;
 382
 383         ret = ceph_set_quota(handle->conn->connectpath, qtype, id, qt);
 384         if (ret) {
 385                 errno = -ret;
 386                 ret = -1;
 387         }
 388
 389         return ret;
 390 #else
 391         WRAP_RETURN(-ENOSYS);
 392 #endif
 393 }
 394
 395 static int cephwrap_statvfs(struct vfs_handle_struct *handle,
 396                             const struct smb_filename *smb_fname,
 397                             struct vfs_statvfs_struct *statbuf)
 398 {
 399         struct statvfs statvfs_buf = { 0 };
 400         int ret;
 401
 402         ret = ceph_statfs(handle->data, smb_fname->base_name, &statvfs_buf);
 403         if (ret < 0) {
 404                 WRAP_RETURN(ret);
 405         }
 406
 407         statbuf->OptimalTransferSize = statvfs_buf.f_frsize;
 408         statbuf->BlockSize = statvfs_buf.f_bsize;
 409         statbuf->TotalBlocks = statvfs_buf.f_blocks;
 410         statbuf->BlocksAvail = statvfs_buf.f_bfree;
 411         statbuf->UserBlocksAvail = statvfs_buf.f_bavail;
 412         statbuf->TotalFileNodes = statvfs_buf.f_files;
 413         statbuf->FreeFileNodes = statvfs_buf.f_ffree;
 414         statbuf->FsIdentifier = statvfs_buf.f_fsid;
 415         DBG_DEBUG("[CEPH] f_bsize: %ld, f_blocks: %ld, f_bfree: %ld, f_bavail: %ld\n",
 416                 (long int)statvfs_buf.f_bsize, (long int)statvfs_buf.f_blocks,
 417                 (long int)statvfs_buf.f_bfree, (long int)statvfs_buf.f_bavail);
 418
 419         return ret;
 420 }
 421
 422 static uint32_t cephwrap_fs_capabilities(struct vfs_handle_struct *handle,
 423                                          enum timestamp_set_resolution *p_ts_res)
 424 {
 425         uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
 426
 427         *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
 428
 429         return caps;
 430 }
 431
 432 /* Directory operations */
 433
 434 static DIR *cephwrap_fdopendir(struct vfs_handle_struct *handle,
 435                                struct files_struct *fsp,
 436                                const char *mask,
 437                                uint32_t attributes)
 438 {
 439         int ret = 0;
 440         struct ceph_dir_result *result = NULL;
 441
 442 #ifdef HAVE_CEPH_FDOPENDIR
 443         int dirfd = fsp_get_io_fd(fsp);
 444         DBG_DEBUG("[CEPH] fdopendir(%p, %d)\n", handle, dirfd);
 445         ret = ceph_fdopendir(handle->data, dirfd, &result);
 446 #else
 447         DBG_DEBUG("[CEPH] fdopendir(%p, %p)\n", handle, fsp);
 448         ret = ceph_opendir(handle->data, fsp->fsp_name->base_name, &result);
 449 #endif
 450         if (ret < 0) {
 451                 result = NULL;
 452                 errno = -ret; /* We return result which is NULL in this case */
 453         }
 454
 455         DBG_DEBUG("[CEPH] fdopendir(...) = %d\n", ret);
 456         return (DIR *) result;
 457 }
 458
 459 static struct dirent *cephwrap_readdir(struct vfs_handle_struct *handle,
 460                                        struct files_struct *dirfsp,
 461                                        DIR *dirp)
 462 {
 463         struct dirent *result = NULL;
 464
 465         DBG_DEBUG("[CEPH] readdir(%p, %p)\n", handle, dirp);
 466         result = ceph_readdir(handle->data, (struct ceph_dir_result *) dirp);
 467         DBG_DEBUG("[CEPH] readdir(...) = %p\n", result);
 468
 469         return result;
 470 }
 471
 472 static void cephwrap_rewinddir(struct vfs_handle_struct *handle, DIR *dirp)
 473 {
 474         DBG_DEBUG("[CEPH] rewinddir(%p, %p)\n", handle, dirp);
 475         ceph_rewinddir(handle->data, (struct ceph_dir_result *) dirp);
 476 }
 477
 478 static int cephwrap_mkdirat(struct vfs_handle_struct *handle,
 479                         files_struct *dirfsp,
 480                         const struct smb_filename *smb_fname,
 481                         mode_t mode)
 482 {
 483         int result = -1;
 484 #ifdef HAVE_CEPH_MKDIRAT
 485         int dirfd = fsp_get_pathref_fd(dirfsp);
 486
 487         DBG_DEBUG("[CEPH] mkdirat(%p, %d, %s)\n",
 488                   handle,
 489                   dirfd,
 490                   smb_fname->base_name);
 491
 492         result = ceph_mkdirat(handle->data, dirfd, smb_fname->base_name, mode);
 493
 494         DBG_DEBUG("[CEPH] mkdirat(...) = %d\n", result);
 495
 496         WRAP_RETURN(result);
 497 #else
 498         struct smb_filename *full_fname = NULL;
 499
 500         full_fname = full_path_from_dirfsp_atname(talloc_tos(),
 501                                                 dirfsp,
 502                                                 smb_fname);
 503         if (full_fname == NULL) {
 504                 return -1;
 505         }
 506
 507         DBG_DEBUG("[CEPH] mkdir(%p, %s)\n",
 508                   handle, smb_fname_str_dbg(full_fname));
 509
 510         result = ceph_mkdir(handle->data, full_fname->base_name, mode);
 511
 512         TALLOC_FREE(full_fname);
 513
 514         WRAP_RETURN(result);
 515 #endif
 516 }
 517
 518 static int cephwrap_closedir(struct vfs_handle_struct *handle, DIR *dirp)
 519 {
 520         int result;
 521
 522         DBG_DEBUG("[CEPH] closedir(%p, %p)\n", handle, dirp);
 523         result = ceph_closedir(handle->data, (struct ceph_dir_result *) dirp);
 524         DBG_DEBUG("[CEPH] closedir(...) = %d\n", result);
 525         WRAP_RETURN(result);
 526 }
 527
 528 /* File operations */
 529
 530 static int cephwrap_openat(struct vfs_handle_struct *handle,
 531                            const struct files_struct *dirfsp,
 532                            const struct smb_filename *smb_fname,
 533                            files_struct *fsp,
 534                            const struct vfs_open_how *how)
 535 {
 536         int flags = how->flags;
 537         mode_t mode = how->mode;
 538         struct smb_filename *name = NULL;
 539         bool have_opath = false;
 540         bool became_root = false;
 541         int result = -ENOENT;
 542 #ifdef HAVE_CEPH_OPENAT
 543         int dirfd = -1;
 544 #endif
 545
 546         if (how->resolve != 0) {
 547                 errno = ENOSYS;
 548                 return -1;
 549         }
 550
 551         if (smb_fname->stream_name) {
 552                 goto out;
 553         }
 554
 555 #ifdef O_PATH
 556         have_opath = true;
 557         if (fsp->fsp_flags.is_pathref) {
 558                 flags |= O_PATH;
 559         }
 560 #endif
 561
 562 #ifdef HAVE_CEPH_OPENAT
 563         dirfd = fsp_get_pathref_fd(dirfsp);
 564
 565         DBG_DEBUG("[CEPH] openat(%p, %d, %p, %d, %d)\n",
 566                   handle, dirfd, fsp, flags, mode);
 567
 568         if (fsp->fsp_flags.is_pathref && !have_opath) {
 569                 become_root();
 570                 became_root = true;
 571         }
 572
 573         result = ceph_openat(handle->data,
 574                              dirfd,
 575                              smb_fname->base_name,
 576                              flags,
 577                              mode);
 578
 579 #else
 580         if (fsp_get_pathref_fd(dirfsp) != AT_FDCWD) {
 581                 name = full_path_from_dirfsp_atname(talloc_tos(),
 582                                                     dirfsp,
 583                                                     smb_fname);
 584                 if (name == NULL) {
 585                         return -1;
 586                 }
 587                 smb_fname = name;
 588         }
 589
 590         DBG_DEBUG("[CEPH] openat(%p, %s, %p, %d, %d)\n", handle,
 591                   smb_fname_str_dbg(smb_fname), fsp, flags, mode);
 592
 593         if (fsp->fsp_flags.is_pathref && !have_opath) {
 594                 become_root();
 595                 became_root = true;
 596         }
 597
 598         result = ceph_open(handle->data, smb_fname->base_name, flags, mode);
 599 #endif
 600         if (became_root) {
 601                 unbecome_root();
 602         }
 603 out:
 604         TALLOC_FREE(name);
 605         fsp->fsp_flags.have_proc_fds = false;
 606         DBG_DEBUG("[CEPH] open(...) = %d\n", result);
 607         WRAP_RETURN(result);
 608 }
 609
 610 static int cephwrap_close(struct vfs_handle_struct *handle, files_struct *fsp)
 611 {
 612         int result;
 613
 614         DBG_DEBUG("[CEPH] close(%p, %p)\n", handle, fsp);
 615         result = ceph_close(handle->data, fsp_get_pathref_fd(fsp));
 616         DBG_DEBUG("[CEPH] close(...) = %d\n", result);
 617
 618         WRAP_RETURN(result);
 619 }
 620
 621 static ssize_t cephwrap_pread(struct vfs_handle_struct *handle, files_struct *fsp, void *data,
 622                         size_t n, off_t offset)
 623 {
 624         ssize_t result;
 625
 626         DBG_DEBUG("[CEPH] pread(%p, %p, %p, %llu, %llu)\n", handle, fsp, data, llu(n), llu(offset));
 627
 628         result = ceph_read(handle->data, fsp_get_io_fd(fsp), data, n, offset);
 629         DBG_DEBUG("[CEPH] pread(...) = %llu\n", llu(result));
 630         WRAP_RETURN(result);
 631 }
 632
 633 struct cephwrap_pread_state {
 634         ssize_t bytes_read;
 635         struct vfs_aio_state vfs_aio_state;
 636 };
 637
 638 /*
 639  * Fake up an async ceph read by calling the synchronous API.
 640  */
 641 static struct tevent_req *cephwrap_pread_send(struct vfs_handle_struct *handle,
 642                                               TALLOC_CTX *mem_ctx,
 643                                               struct tevent_context *ev,
 644                                               struct files_struct *fsp,
 645                                               void *data,
 646                                               size_t n, off_t offset)
 647 {
 648         struct tevent_req *req = NULL;
 649         struct cephwrap_pread_state *state = NULL;
 650         int ret = -1;
 651
 652         DBG_DEBUG("[CEPH] %s\n", __func__);
 653         req = tevent_req_create(mem_ctx, &state, struct cephwrap_pread_state);
 654         if (req == NULL) {
 655                 return NULL;
 656         }
 657
 658         ret = ceph_read(handle->data, fsp_get_io_fd(fsp), data, n, offset);
 659         if (ret < 0) {
 660                 /* ceph returns -errno on error. */
 661                 tevent_req_error(req, -ret);
 662                 return tevent_req_post(req, ev);
 663         }
 664
 665         state->bytes_read = ret;
 666         tevent_req_done(req);
 667         /* Return and schedule the completion of the call. */
 668         return tevent_req_post(req, ev);
 669 }
 670
 671 static ssize_t cephwrap_pread_recv(struct tevent_req *req,
 672                                    struct vfs_aio_state *vfs_aio_state)
 673 {
 674         struct cephwrap_pread_state *state =
 675                 tevent_req_data(req, struct cephwrap_pread_state);
 676
 677         DBG_DEBUG("[CEPH] %s\n", __func__);
 678         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
 679                 return -1;
 680         }
 681         *vfs_aio_state = state->vfs_aio_state;
 682         return state->bytes_read;
 683 }
 684
 685 static ssize_t cephwrap_pwrite(struct vfs_handle_struct *handle, files_struct *fsp, const void *data,
 686                         size_t n, off_t offset)
 687 {
 688         ssize_t result;
 689
 690         DBG_DEBUG("[CEPH] pwrite(%p, %p, %p, %llu, %llu)\n", handle, fsp, data, llu(n), llu(offset));
 691         result = ceph_write(handle->data, fsp_get_io_fd(fsp), data, n, offset);
 692         DBG_DEBUG("[CEPH] pwrite(...) = %llu\n", llu(result));
 693         WRAP_RETURN(result);
 694 }
 695
 696 struct cephwrap_pwrite_state {
 697         ssize_t bytes_written;
 698         struct vfs_aio_state vfs_aio_state;
 699 };
 700
 701 /*
 702  * Fake up an async ceph write by calling the synchronous API.
 703  */
 704 static struct tevent_req *cephwrap_pwrite_send(struct vfs_handle_struct *handle,
 705                                                TALLOC_CTX *mem_ctx,
 706                                                struct tevent_context *ev,
 707                                                struct files_struct *fsp,
 708                                                const void *data,
 709                                                size_t n, off_t offset)
 710 {
 711         struct tevent_req *req = NULL;
 712         struct cephwrap_pwrite_state *state = NULL;
 713         int ret = -1;
 714
 715         DBG_DEBUG("[CEPH] %s\n", __func__);
 716         req = tevent_req_create(mem_ctx, &state, struct cephwrap_pwrite_state);
 717         if (req == NULL) {
 718                 return NULL;
 719         }
 720
 721         ret = ceph_write(handle->data, fsp_get_io_fd(fsp), data, n, offset);
 722         if (ret < 0) {
 723                 /* ceph returns -errno on error. */
 724                 tevent_req_error(req, -ret);
 725                 return tevent_req_post(req, ev);
 726         }
 727
 728         state->bytes_written = ret;
 729         tevent_req_done(req);
 730         /* Return and schedule the completion of the call. */
 731         return tevent_req_post(req, ev);
 732 }
 733
 734 static ssize_t cephwrap_pwrite_recv(struct tevent_req *req,
 735                                     struct vfs_aio_state *vfs_aio_state)
 736 {
 737         struct cephwrap_pwrite_state *state =
 738                 tevent_req_data(req, struct cephwrap_pwrite_state);
 739
 740         DBG_DEBUG("[CEPH] %s\n", __func__);
 741         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
 742                 return -1;
 743         }
 744         *vfs_aio_state = state->vfs_aio_state;
 745         return state->bytes_written;
 746 }
 747
 748 static off_t cephwrap_lseek(struct vfs_handle_struct *handle, files_struct *fsp, off_t offset, int whence)
 749 {
 750         off_t result = 0;
 751
 752         DBG_DEBUG("[CEPH] cephwrap_lseek\n");
 753         result = ceph_lseek(handle->data, fsp_get_io_fd(fsp), offset, whence);
 754         WRAP_RETURN(result);
 755 }
 756
 757 static ssize_t cephwrap_sendfile(struct vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *hdr,
 758                         off_t offset, size_t n)
 759 {
 760         /*
 761          * We cannot support sendfile because libcephfs is in user space.
 762          */
 763         DBG_DEBUG("[CEPH] cephwrap_sendfile\n");
 764         errno = ENOTSUP;
 765         return -1;
 766 }
 767
 768 static ssize_t cephwrap_recvfile(struct vfs_handle_struct *handle,
 769                         int fromfd,
 770                         files_struct *tofsp,
 771                         off_t offset,
 772                         size_t n)
 773 {
 774         /*
 775          * We cannot support recvfile because libcephfs is in user space.
 776          */
 777         DBG_DEBUG("[CEPH] cephwrap_recvfile\n");
 778         errno=ENOTSUP;
 779         return -1;
 780 }
 781
 782 static int cephwrap_renameat(struct vfs_handle_struct *handle,
 783                         files_struct *srcfsp,
 784                         const struct smb_filename *smb_fname_src,
 785                         files_struct *dstfsp,
 786                         const struct smb_filename *smb_fname_dst)
 787 {
 788         struct smb_filename *full_fname_src = NULL;
 789         struct smb_filename *full_fname_dst = NULL;
 790         int result = -1;
 791
 792         DBG_DEBUG("[CEPH] cephwrap_renameat\n");
 793         if (smb_fname_src->stream_name || smb_fname_dst->stream_name) {
 794                 errno = ENOENT;
 795                 return result;
 796         }
 797
 798         full_fname_src = full_path_from_dirfsp_atname(talloc_tos(),
 799                                                   srcfsp,
 800                                                   smb_fname_src);
 801         if (full_fname_src == NULL) {
 802                 errno = ENOMEM;
 803                 return -1;
 804         }
 805         full_fname_dst = full_path_from_dirfsp_atname(talloc_tos(),
 806                                                   dstfsp,
 807                                                   smb_fname_dst);
 808         if (full_fname_dst == NULL) {
 809                 TALLOC_FREE(full_fname_src);
 810                 errno = ENOMEM;
 811                 return -1;
 812         }
 813
 814         result = ceph_rename(handle->data,
 815                              full_fname_src->base_name,
 816                              full_fname_dst->base_name);
 817
 818         TALLOC_FREE(full_fname_src);
 819         TALLOC_FREE(full_fname_dst);
 820
 821         WRAP_RETURN(result);
 822 }
 823
 824 /*
 825  * Fake up an async ceph fsync by calling the synchronous API.
 826  */
 827
 828 static struct tevent_req *cephwrap_fsync_send(struct vfs_handle_struct *handle,
 829                                         TALLOC_CTX *mem_ctx,
 830                                         struct tevent_context *ev,
 831                                         files_struct *fsp)
 832 {
 833         struct tevent_req *req = NULL;
 834         struct vfs_aio_state *state = NULL;
 835         int ret = -1;
 836
 837         DBG_DEBUG("[CEPH] cephwrap_fsync_send\n");
 838
 839         req = tevent_req_create(mem_ctx, &state, struct vfs_aio_state);
 840         if (req == NULL) {
 841                 return NULL;
 842         }
 843
 844         /* Make sync call. */
 845         ret = ceph_fsync(handle->data, fsp_get_io_fd(fsp), false);
 846
 847         if (ret != 0) {
 848                 /* ceph_fsync returns -errno on error. */
 849                 tevent_req_error(req, -ret);
 850                 return tevent_req_post(req, ev);
 851         }
 852
 853         /* Mark it as done. */
 854         tevent_req_done(req);
 855         /* Return and schedule the completion of the call. */
 856         return tevent_req_post(req, ev);
 857 }
 858
 859 static int cephwrap_fsync_recv(struct tevent_req *req,
 860                                 struct vfs_aio_state *vfs_aio_state)
 861 {
 862         struct vfs_aio_state *state =
 863                 tevent_req_data(req, struct vfs_aio_state);
 864
 865         DBG_DEBUG("[CEPH] cephwrap_fsync_recv\n");
 866
 867         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
 868                 return -1;
 869         }
 870         *vfs_aio_state = *state;
 871         return 0;
 872 }
 873
 874 #define SAMBA_STATX_ATTR_MASK   (CEPH_STATX_BASIC_STATS|CEPH_STATX_BTIME)
 875
 876 static void init_stat_ex_from_ceph_statx(struct stat_ex *dst, const struct ceph_statx *stx)
 877 {
 878         DBG_DEBUG("[CEPH]\tstx = {dev = %llx, ino = %llu, mode = 0x%x, "
 879                   "nlink = %llu, uid = %d, gid = %d, rdev = %llx, size = %llu, "
 880                   "blksize = %llu, blocks = %llu, atime = %llu, mtime = %llu, "
 881                   "ctime = %llu, btime = %llu}\n",
 882                   llu(stx->stx_dev), llu(stx->stx_ino), stx->stx_mode,
 883                   llu(stx->stx_nlink), stx->stx_uid, stx->stx_gid,
 884                   llu(stx->stx_rdev), llu(stx->stx_size), llu(stx->stx_blksize),
 885                   llu(stx->stx_blocks), llu(stx->stx_atime.tv_sec),
 886                   llu(stx->stx_mtime.tv_sec), llu(stx->stx_ctime.tv_sec),
 887                   llu(stx->stx_btime.tv_sec));
 888
 889         if ((stx->stx_mask & SAMBA_STATX_ATTR_MASK) != SAMBA_STATX_ATTR_MASK) {
 890                 DBG_WARNING("%s: stx->stx_mask is incorrect (wanted %x, got %x)\n",
 891                                 __func__, SAMBA_STATX_ATTR_MASK, stx->stx_mask);
 892         }
 893
 894         dst->st_ex_dev = stx->stx_dev;
 895         dst->st_ex_rdev = stx->stx_rdev;
 896         dst->st_ex_ino = stx->stx_ino;
 897         dst->st_ex_mode = stx->stx_mode;
 898         dst->st_ex_uid = stx->stx_uid;
 899         dst->st_ex_gid = stx->stx_gid;
 900         dst->st_ex_size = stx->stx_size;
 901         dst->st_ex_nlink = stx->stx_nlink;
 902         dst->st_ex_atime = stx->stx_atime;
 903         dst->st_ex_btime = stx->stx_btime;
 904         dst->st_ex_ctime = stx->stx_ctime;
 905         dst->st_ex_mtime = stx->stx_mtime;
 906         dst->st_ex_blksize = stx->stx_blksize;
 907         dst->st_ex_blocks = stx->stx_blocks;
 908 }
 909
 910 static int cephwrap_stat(struct vfs_handle_struct *handle,
 911                         struct smb_filename *smb_fname)
 912 {
 913         int result = -1;
 914         struct ceph_statx stx = { 0 };
 915
 916         DBG_DEBUG("[CEPH] stat(%p, %s)\n", handle, smb_fname_str_dbg(smb_fname));
 917
 918         if (smb_fname->stream_name) {
 919                 errno = ENOENT;
 920                 return result;
 921         }
 922
 923         result = ceph_statx(handle->data, smb_fname->base_name, &stx,
 924                                 SAMBA_STATX_ATTR_MASK, 0);
 925         DBG_DEBUG("[CEPH] statx(...) = %d\n", result);
 926         if (result < 0) {
 927                 WRAP_RETURN(result);
 928         }
 929
 930         init_stat_ex_from_ceph_statx(&smb_fname->st, &stx);
 931         DBG_DEBUG("[CEPH] mode = 0x%x\n", smb_fname->st.st_ex_mode);
 932         return result;
 933 }
 934
 935 static int cephwrap_fstat(struct vfs_handle_struct *handle, files_struct *fsp, SMB_STRUCT_STAT *sbuf)
 936 {
 937         int result = -1;
 938         struct ceph_statx stx = { 0 };
 939         int fd = fsp_get_pathref_fd(fsp);
 940
 941         DBG_DEBUG("[CEPH] fstat(%p, %d)\n", handle, fd);
 942         result = ceph_fstatx(handle->data, fd, &stx,
 943                                 SAMBA_STATX_ATTR_MASK, 0);
 944         DBG_DEBUG("[CEPH] fstat(...) = %d\n", result);
 945         if (result < 0) {
 946                 WRAP_RETURN(result);
 947         }
 948
 949         init_stat_ex_from_ceph_statx(sbuf, &stx);
 950         DBG_DEBUG("[CEPH] mode = 0x%x\n", sbuf->st_ex_mode);
 951         return result;
 952 }
 953
 954 static int cephwrap_fstatat(struct vfs_handle_struct *handle,
 955                             const struct files_struct *dirfsp,
 956                             const struct smb_filename *smb_fname,
 957                             SMB_STRUCT_STAT *sbuf,
 958                             int flags)
 959 {
 960         int result = -1;
 961         struct ceph_statx stx = { 0 };
 962 #ifdef HAVE_CEPH_STATXAT
 963         int dirfd = fsp_get_pathref_fd(dirfsp);
 964
 965         DBG_DEBUG("[CEPH] fstatat(%p, %d, %s)\n",
 966                   handle, dirfd, smb_fname->base_name);
 967         result = ceph_statxat(handle->data, dirfd, smb_fname->base_name,
 968                               &stx, SAMBA_STATX_ATTR_MASK, 0);
 969 #else
 970         struct smb_filename *full_fname = NULL;
 971
 972         full_fname = full_path_from_dirfsp_atname(talloc_tos(),
 973                                                   dirfsp,
 974                                                   smb_fname);
 975         if (full_fname == NULL) {
 976                 errno = ENOMEM;
 977                 return -1;
 978         }
 979
 980         DBG_DEBUG("[CEPH] fstatat(%p, %s)\n",
 981                   handle, smb_fname_str_dbg(full_fname));
 982         result = ceph_statx(handle->data, full_fname->base_name,
 983                             &stx, SAMBA_STATX_ATTR_MASK, 0);
 984
 985         TALLOC_FREE(full_fname);
 986 #endif
 987
 988         DBG_DEBUG("[CEPH] fstatat(...) = %d\n", result);
 989         if (result < 0) {
 990                 WRAP_RETURN(result);
 991         }
 992
 993         init_stat_ex_from_ceph_statx(sbuf, &stx);
 994         DBG_DEBUG("[CEPH] mode = 0x%x\n", sbuf->st_ex_mode);
 995
 996         return 0;
 997 }
 998
 999 static int cephwrap_lstat(struct vfs_handle_struct *handle,
1000                          struct smb_filename *smb_fname)
1001 {
1002         int result = -1;
1003         struct ceph_statx stx = { 0 };
1004
1005         DBG_DEBUG("[CEPH] lstat(%p, %s)\n", handle, smb_fname_str_dbg(smb_fname));
1006
1007         if (smb_fname->stream_name) {
1008                 errno = ENOENT;
1009                 return result;
1010         }
1011
1012         result = ceph_statx(handle->data, smb_fname->base_name, &stx,
1013                                 SAMBA_STATX_ATTR_MASK, AT_SYMLINK_NOFOLLOW);
1014         DBG_DEBUG("[CEPH] lstat(...) = %d\n", result);
1015         if (result < 0) {
1016                 WRAP_RETURN(result);
1017         }
1018
1019         init_stat_ex_from_ceph_statx(&smb_fname->st, &stx);
1020         return result;
1021 }
1022
1023 static int cephwrap_fntimes(struct vfs_handle_struct *handle,
1024                             files_struct *fsp,
1025                             struct smb_file_time *ft)
1026 {
1027         struct ceph_statx stx = { 0 };
1028         int result;
1029         int mask = 0;
1030
1031         if (!is_omit_timespec(&ft->atime)) {
1032                 stx.stx_atime = ft->atime;
1033                 mask |= CEPH_SETATTR_ATIME;
1034         }
1035         if (!is_omit_timespec(&ft->mtime)) {
1036                 stx.stx_mtime = ft->mtime;
1037                 mask |= CEPH_SETATTR_MTIME;
1038         }
1039         if (!is_omit_timespec(&ft->create_time)) {
1040                 stx.stx_btime = ft->create_time;
1041                 mask |= CEPH_SETATTR_BTIME;
1042         }
1043
1044         if (!mask) {
1045                 return 0;
1046         }
1047
1048         if (!fsp->fsp_flags.is_pathref) {
1049                 /*
1050                  * We can use an io_fd to set xattrs.
1051                  */
1052                 result = ceph_fsetattrx(handle->data,
1053                                         fsp_get_io_fd(fsp),
1054                                         &stx,
1055                                         mask);
1056         } else {
1057                 /*
1058                  * This is no longer a handle based call.
1059                  */
1060                 result = ceph_setattrx(handle->data,
1061                                        fsp->fsp_name->base_name,
1062                                        &stx,
1063                                        mask,
1064                                        0);
1065         }
1066
1067         DBG_DEBUG("[CEPH] ntimes(%p, %s, {%ld, %ld, %ld, %ld}) = %d\n",
1068                   handle, fsp_str_dbg(fsp), ft->mtime.tv_sec, ft->atime.tv_sec,
1069                   ft->ctime.tv_sec, ft->create_time.tv_sec, result);
1070
1071         return result;
1072 }
1073
1074 static int cephwrap_unlinkat(struct vfs_handle_struct *handle,
1075                         struct files_struct *dirfsp,
1076                         const struct smb_filename *smb_fname,
1077                         int flags)
1078 {
1079         int result = -1;
1080 #ifdef HAVE_CEPH_UNLINKAT
1081         int dirfd = fsp_get_pathref_fd(dirfsp);
1082
1083         DBG_DEBUG("[CEPH] unlinkat(%p, %d, %s)\n",
1084                   handle,
1085                   dirfd,
1086                   smb_fname_str_dbg(smb_fname));
1087
1088         if (smb_fname->stream_name) {
1089                 errno = ENOENT;
1090                 return result;
1091         }
1092
1093         result = ceph_unlinkat(handle->data,
1094                                dirfd,
1095                                smb_fname->base_name,
1096                                flags);
1097         DBG_DEBUG("[CEPH] unlinkat(...) = %d\n", result);
1098         WRAP_RETURN(result);
1099 #else
1100         struct smb_filename *full_fname = NULL;
1101
1102         DBG_DEBUG("[CEPH] unlink(%p, %s)\n",
1103                 handle,
1104                 smb_fname_str_dbg(smb_fname));
1105
1106         if (smb_fname->stream_name) {
1107                 errno = ENOENT;
1108                 return result;
1109         }
1110
1111         full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1112                                                   dirfsp,
1113                                                   smb_fname);
1114         if (full_fname == NULL) {
1115                 return -1;
1116         }
1117
1118         if (flags & AT_REMOVEDIR) {
1119                 result = ceph_rmdir(handle->data, full_fname->base_name);
1120         } else {
1121                 result = ceph_unlink(handle->data, full_fname->base_name);
1122         }
1123         TALLOC_FREE(full_fname);
1124         DBG_DEBUG("[CEPH] unlink(...) = %d\n", result);
1125         WRAP_RETURN(result);
1126 #endif
1127 }
1128
1129 static int cephwrap_fchmod(struct vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
1130 {
1131         int result;
1132
1133         DBG_DEBUG("[CEPH] fchmod(%p, %p, %d)\n", handle, fsp, mode);
1134         if (!fsp->fsp_flags.is_pathref) {
1135                 /*
1136                  * We can use an io_fd to change permissions.
1137                  */
1138                 result = ceph_fchmod(handle->data, fsp_get_io_fd(fsp), mode);
1139         } else {
1140                 /*
1141                  * This is no longer a handle based call.
1142                  */
1143                 result = ceph_chmod(handle->data,
1144                                     fsp->fsp_name->base_name,
1145                                     mode);
1146         }
1147         DBG_DEBUG("[CEPH] fchmod(...) = %d\n", result);
1148         WRAP_RETURN(result);
1149 }
1150
1151 static int cephwrap_fchown(struct vfs_handle_struct *handle, files_struct *fsp, uid_t uid, gid_t gid)
1152 {
1153         int result;
1154
1155         DBG_DEBUG("[CEPH] fchown(%p, %p, %d, %d)\n", handle, fsp, uid, gid);
1156         if (!fsp->fsp_flags.is_pathref) {
1157                 /*
1158                  * We can use an io_fd to change ownership.
1159                  */
1160                 result = ceph_fchown(handle->data,
1161                                      fsp_get_io_fd(fsp),
1162                                      uid,
1163                                      gid);
1164         } else {
1165                 /*
1166                  * This is no longer a handle based call.
1167                  */
1168                 result = ceph_chown(handle->data,
1169                                     fsp->fsp_name->base_name,
1170                                     uid,
1171                                     gid);
1172         }
1173
1174         DBG_DEBUG("[CEPH] fchown(...) = %d\n", result);
1175         WRAP_RETURN(result);
1176 }
1177
1178 static int cephwrap_lchown(struct vfs_handle_struct *handle,
1179                         const struct smb_filename *smb_fname,
1180                         uid_t uid,
1181                         gid_t gid)
1182 {
1183         int result;
1184         DBG_DEBUG("[CEPH] lchown(%p, %s, %d, %d)\n", handle, smb_fname->base_name, uid, gid);
1185         result = ceph_lchown(handle->data, smb_fname->base_name, uid, gid);
1186         DBG_DEBUG("[CEPH] lchown(...) = %d\n", result);
1187         WRAP_RETURN(result);
1188 }
1189
1190 static int cephwrap_chdir(struct vfs_handle_struct *handle,
1191                         const struct smb_filename *smb_fname)
1192 {
1193         int result = -1;
1194         DBG_DEBUG("[CEPH] chdir(%p, %s)\n", handle, smb_fname->base_name);
1195         result = ceph_chdir(handle->data, smb_fname->base_name);
1196         DBG_DEBUG("[CEPH] chdir(...) = %d\n", result);
1197         WRAP_RETURN(result);
1198 }
1199
1200 static struct smb_filename *cephwrap_getwd(struct vfs_handle_struct *handle,
1201                         TALLOC_CTX *ctx)
1202 {
1203         const char *cwd = ceph_getcwd(handle->data);
1204         DBG_DEBUG("[CEPH] getwd(%p) = %s\n", handle, cwd);
1205         return synthetic_smb_fname(ctx,
1206                                 cwd,
1207                                 NULL,
1208                                 NULL,
1209                                 0,
1210                                 0);
1211 }
1212
1213 static int strict_allocate_ftruncate(struct vfs_handle_struct *handle, files_struct *fsp, off_t len)
1214 {
1215         off_t space_to_write;
1216         int result;
1217         NTSTATUS status;
1218         SMB_STRUCT_STAT *pst;
1219
1220         status = vfs_stat_fsp(fsp);
1221         if (!NT_STATUS_IS_OK(status)) {
1222                 return -1;
1223         }
1224         pst = &fsp->fsp_name->st;
1225
1226 #ifdef S_ISFIFO
1227         if (S_ISFIFO(pst->st_ex_mode))
1228                 return 0;
1229 #endif
1230
1231         if (pst->st_ex_size == len)
1232                 return 0;
1233
1234         /* Shrink - just ftruncate. */
1235         if (pst->st_ex_size > len) {
1236                 result = ceph_ftruncate(handle->data, fsp_get_io_fd(fsp), len);
1237                 WRAP_RETURN(result);
1238         }
1239
1240         space_to_write = len - pst->st_ex_size;
1241         result = ceph_fallocate(handle->data, fsp_get_io_fd(fsp), 0, pst->st_ex_size,
1242                                 space_to_write);
1243         WRAP_RETURN(result);
1244 }
1245
1246 static int cephwrap_ftruncate(struct vfs_handle_struct *handle, files_struct *fsp, off_t len)
1247 {
1248         int result = -1;
1249
1250         DBG_DEBUG("[CEPH] ftruncate(%p, %p, %llu\n", handle, fsp, llu(len));
1251
1252         if (lp_strict_allocate(SNUM(fsp->conn))) {
1253                 return strict_allocate_ftruncate(handle, fsp, len);
1254         }
1255
1256         result = ceph_ftruncate(handle->data, fsp_get_io_fd(fsp), len);
1257         WRAP_RETURN(result);
1258 }
1259
1260 static int cephwrap_fallocate(struct vfs_handle_struct *handle,
1261                               struct files_struct *fsp,
1262                               uint32_t mode,
1263                               off_t offset,
1264                               off_t len)
1265 {
1266         int result;
1267
1268         DBG_DEBUG("[CEPH] fallocate(%p, %p, %u, %llu, %llu\n",
1269                   handle, fsp, mode, llu(offset), llu(len));
1270         /* unsupported mode flags are rejected by libcephfs */
1271         result = ceph_fallocate(handle->data, fsp_get_io_fd(fsp), mode, offset, len);
1272         DBG_DEBUG("[CEPH] fallocate(...) = %d\n", result);
1273         WRAP_RETURN(result);
1274 }
1275
1276 static bool cephwrap_lock(struct vfs_handle_struct *handle, files_struct *fsp, int op, off_t offset, off_t count, int type)
1277 {
1278         DBG_DEBUG("[CEPH] lock\n");
1279         return true;
1280 }
1281
1282 static int cephwrap_filesystem_sharemode(struct vfs_handle_struct *handle,
1283                                          files_struct *fsp,
1284                                          uint32_t share_access,
1285                                          uint32_t access_mask)
1286 {
1287         DBG_ERR("[CEPH] filesystem sharemodes unsupported! Consider setting "
1288                 "\"kernel share modes = no\"\n");
1289
1290         errno = ENOSYS;
1291         return -1;
1292 }
1293
1294 static int cephwrap_fcntl(vfs_handle_struct *handle,
1295                           files_struct *fsp, int cmd, va_list cmd_arg)
1296 {
1297         /*
1298          * SMB_VFS_FCNTL() is currently only called by vfs_set_blocking() to
1299          * clear O_NONBLOCK, etc for LOCK_MAND and FIFOs. Ignore it.
1300          */
1301         if (cmd == F_GETFL) {
1302                 return 0;
1303         } else if (cmd == F_SETFL) {
1304                 va_list dup_cmd_arg;
1305                 int opt;
1306
1307                 va_copy(dup_cmd_arg, cmd_arg);
1308                 opt = va_arg(dup_cmd_arg, int);
1309                 va_end(dup_cmd_arg);
1310                 if (opt == 0) {
1311                         return 0;
1312                 }
1313                 DBG_ERR("unexpected fcntl SETFL(%d)\n", opt);
1314                 goto err_out;
1315         }
1316         DBG_ERR("unexpected fcntl: %d\n", cmd);
1317 err_out:
1318         errno = EINVAL;
1319         return -1;
1320 }
1321
1322 static bool cephwrap_getlock(struct vfs_handle_struct *handle, files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid)
1323 {
1324         DBG_DEBUG("[CEPH] getlock returning false and errno=0\n");
1325
1326         errno = 0;
1327         return false;
1328 }
1329
1330 /*
1331  * We cannot let this fall through to the default, because the file might only
1332  * be accessible from libcephfs (which is a user-space client) but the fd might
1333  * be for some file the kernel knows about.
1334  */
1335 static int cephwrap_linux_setlease(struct vfs_handle_struct *handle, files_struct *fsp,
1336                                 int leasetype)
1337 {
1338         int result = -1;
1339
1340         DBG_DEBUG("[CEPH] linux_setlease\n");
1341         errno = ENOSYS;
1342         return result;
1343 }
1344
1345 static int cephwrap_symlinkat(struct vfs_handle_struct *handle,
1346                 const struct smb_filename *link_target,
1347                 struct files_struct *dirfsp,
1348                 const struct smb_filename *new_smb_fname)
1349 {
1350         int result = -1;
1351 #ifdef HAVE_CEPH_SYMLINKAT
1352         int dirfd = fsp_get_pathref_fd(dirfsp);
1353
1354         DBG_DEBUG("[CEPH] symlinkat(%p, %s, %d, %s)\n",
1355                   handle,
1356                   link_target->base_name,
1357                   dirfd,
1358                   new_smb_fname->base_name);
1359
1360         result = ceph_symlinkat(handle->data,
1361                                 link_target->base_name,
1362                                 dirfd,
1363                                 new_smb_fname->base_name);
1364         DBG_DEBUG("[CEPH] symlinkat(...) = %d\n", result);
1365         WRAP_RETURN(result);
1366 #else
1367         struct smb_filename *full_fname = NULL;
1368
1369         full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1370                                                 dirfsp,
1371                                                 new_smb_fname);
1372         if (full_fname == NULL) {
1373                 return -1;
1374         }
1375
1376         DBG_DEBUG("[CEPH] symlink(%p, %s, %s)\n", handle,
1377                         link_target->base_name,
1378                         full_fname->base_name);
1379
1380         result = ceph_symlink(handle->data,
1381                         link_target->base_name,
1382                         full_fname->base_name);
1383         TALLOC_FREE(full_fname);
1384         DBG_DEBUG("[CEPH] symlink(...) = %d\n", result);
1385         WRAP_RETURN(result);
1386 #endif
1387 }
1388
1389 static int cephwrap_readlinkat(struct vfs_handle_struct *handle,
1390                 const struct files_struct *dirfsp,
1391                 const struct smb_filename *smb_fname,
1392                 char *buf,
1393                 size_t bufsiz)
1394 {
1395         int result = -1;
1396 #ifdef HAVE_CEPH_READLINKAT
1397         int dirfd = fsp_get_pathref_fd(dirfsp);
1398
1399         DBG_DEBUG("[CEPH] readlinkat(%p, %d, %s, %p, %llu)\n",
1400                   handle,
1401                   dirfd,
1402                   smb_fname->base_name,
1403                   buf,
1404                   llu(bufsiz));
1405
1406         result = ceph_readlinkat(handle->data,
1407                                  dirfd,
1408                                  smb_fname->base_name,
1409                                  buf,
1410                                  bufsiz);
1411
1412         DBG_DEBUG("[CEPH] readlinkat(...) = %d\n", result);
1413         WRAP_RETURN(result);
1414 #else
1415         struct smb_filename *full_fname = NULL;
1416
1417         full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1418                                                 dirfsp,
1419                                                 smb_fname);
1420         if (full_fname == NULL) {
1421                 return -1;
1422         }
1423
1424         DBG_DEBUG("[CEPH] readlink(%p, %s, %p, %llu)\n", handle,
1425                         full_fname->base_name, buf, llu(bufsiz));
1426
1427         result = ceph_readlink(handle->data, full_fname->base_name, buf, bufsiz);
1428         TALLOC_FREE(full_fname);
1429         DBG_DEBUG("[CEPH] readlink(...) = %d\n", result);
1430         WRAP_RETURN(result);
1431 #endif
1432 }
1433
1434 static int cephwrap_linkat(struct vfs_handle_struct *handle,
1435                 files_struct *srcfsp,
1436                 const struct smb_filename *old_smb_fname,
1437                 files_struct *dstfsp,
1438                 const struct smb_filename *new_smb_fname,
1439                 int flags)
1440 {
1441         struct smb_filename *full_fname_old = NULL;
1442         struct smb_filename *full_fname_new = NULL;
1443         int result = -1;
1444
1445         full_fname_old = full_path_from_dirfsp_atname(talloc_tos(),
1446                                         srcfsp,
1447                                         old_smb_fname);
1448         if (full_fname_old == NULL) {
1449                 return -1;
1450         }
1451         full_fname_new = full_path_from_dirfsp_atname(talloc_tos(),
1452                                         dstfsp,
1453                                         new_smb_fname);
1454         if (full_fname_new == NULL) {
1455                 TALLOC_FREE(full_fname_old);
1456                 return -1;
1457         }
1458
1459         DBG_DEBUG("[CEPH] link(%p, %s, %s)\n", handle,
1460                         full_fname_old->base_name,
1461                         full_fname_new->base_name);
1462
1463         result = ceph_link(handle->data,
1464                                 full_fname_old->base_name,
1465                                 full_fname_new->base_name);
1466         DBG_DEBUG("[CEPH] link(...) = %d\n", result);
1467         TALLOC_FREE(full_fname_old);
1468         TALLOC_FREE(full_fname_new);
1469         WRAP_RETURN(result);
1470 }
1471
1472 static int cephwrap_mknodat(struct vfs_handle_struct *handle,
1473                 files_struct *dirfsp,
1474                 const struct smb_filename *smb_fname,
1475                 mode_t mode,
1476                 SMB_DEV_T dev)
1477 {
1478         struct smb_filename *full_fname = NULL;
1479         int result = -1;
1480
1481         full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1482                                                 dirfsp,
1483                                                 smb_fname);
1484         if (full_fname == NULL) {
1485                 return -1;
1486         }
1487
1488         DBG_DEBUG("[CEPH] mknodat(%p, %s)\n", handle, full_fname->base_name);
1489         result = ceph_mknod(handle->data, full_fname->base_name, mode, dev);
1490         DBG_DEBUG("[CEPH] mknodat(...) = %d\n", result);
1491
1492         TALLOC_FREE(full_fname);
1493
1494         WRAP_RETURN(result);
1495 }
1496
1497 /*
1498  * This is a simple version of real-path ... a better version is needed to
1499  * ask libcephfs about symbolic links.
1500  */
1501 static struct smb_filename *cephwrap_realpath(struct vfs_handle_struct *handle,
1502                                 TALLOC_CTX *ctx,
1503                                 const struct smb_filename *smb_fname)
1504 {
1505         char *result = NULL;
1506         const char *path = smb_fname->base_name;
1507         size_t len = strlen(path);
1508         struct smb_filename *result_fname = NULL;
1509         int r = -1;
1510
1511         if (len && (path[0] == '/')) {
1512                 r = asprintf(&result, "%s", path);
1513         } else if ((len >= 2) && (path[0] == '.') && (path[1] == '/')) {
1514                 if (len == 2) {
1515                         r = asprintf(&result, "%s",
1516                                         handle->conn->cwd_fsp->fsp_name->base_name);
1517                 } else {
1518                         r = asprintf(&result, "%s/%s",
1519                                         handle->conn->cwd_fsp->fsp_name->base_name, &path[2]);
1520                 }
1521         } else {
1522                 r = asprintf(&result, "%s/%s",
1523                                 handle->conn->cwd_fsp->fsp_name->base_name, path);
1524         }
1525
1526         if (r < 0) {
1527                 return NULL;
1528         }
1529
1530         DBG_DEBUG("[CEPH] realpath(%p, %s) = %s\n", handle, path, result);
1531         result_fname = synthetic_smb_fname(ctx,
1532                                 result,
1533                                 NULL,
1534                                 NULL,
1535                                 0,
1536                                 0);
1537         SAFE_FREE(result);
1538         return result_fname;
1539 }
1540
1541
1542 static int cephwrap_fchflags(struct vfs_handle_struct *handle,
1543                         struct files_struct *fsp,
1544                         unsigned int flags)
1545 {
1546         errno = ENOSYS;
1547         return -1;
1548 }
1549
1550 static NTSTATUS cephwrap_get_real_filename_at(
1551         struct vfs_handle_struct *handle,
1552         struct files_struct *dirfsp,
1553         const char *name,
1554         TALLOC_CTX *mem_ctx,
1555         char **found_name)
1556 {
1557         /*
1558          * Don't fall back to get_real_filename so callers can differentiate
1559          * between a full directory scan and an actual case-insensitive stat.
1560          */
1561         return NT_STATUS_NOT_SUPPORTED;
1562 }
1563
1564 static const char *cephwrap_connectpath(
1565         struct vfs_handle_struct *handle,
1566         const struct files_struct *dirfsp,
1567         const struct smb_filename *smb_fname)
1568 {
1569         return handle->conn->connectpath;
1570 }
1571
1572 static NTSTATUS cephwrap_fget_dos_attributes(struct vfs_handle_struct *handle,
1573                                              struct files_struct *fsp,
1574                                              uint32_t *dosmode)
1575 {
1576         struct timespec saved_btime = fsp->fsp_name->st.st_ex_btime;
1577         NTSTATUS status;
1578
1579         status = fget_ea_dos_attribute(fsp, dosmode);
1580         if (!NT_STATUS_IS_OK(status)) {
1581                 return status;
1582         }
1583
1584         /*
1585          * Restore previously stored btime from statx timestamps as it should be
1586          * the only source of truth. create_time from dos attribute, if any, may
1587          * have older values which isn't trustworthy to be looked at for other
1588          * open file handle operations.
1589          */
1590         fsp->fsp_name->st.st_ex_btime = saved_btime;
1591
1592         return NT_STATUS_OK;
1593 }
1594
1595 /****************************************************************
1596  Extended attribute operations.
1597 *****************************************************************/
1598
1599 static ssize_t cephwrap_fgetxattr(struct vfs_handle_struct *handle,
1600                                   struct files_struct *fsp,
1601                                   const char *name,
1602                                   void *value,
1603                                   size_t size)
1604 {
1605         int ret;
1606         DBG_DEBUG("[CEPH] fgetxattr(%p, %p, %s, %p, %llu)\n",
1607                   handle,
1608                   fsp,
1609                   name,
1610                   value,
1611                   llu(size));
1612         if (!fsp->fsp_flags.is_pathref) {
1613                 ret = ceph_fgetxattr(handle->data,
1614                                      fsp_get_io_fd(fsp),
1615                                      name,
1616                                      value,
1617                                      size);
1618         } else {
1619                 ret = ceph_getxattr(handle->data,
1620                                     fsp->fsp_name->base_name,
1621                                     name,
1622                                     value,
1623                                     size);
1624         }
1625         DBG_DEBUG("[CEPH] fgetxattr(...) = %d\n", ret);
1626         if (ret < 0) {
1627                 WRAP_RETURN(ret);
1628         }
1629         return (ssize_t)ret;
1630 }
1631
1632 static ssize_t cephwrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size)
1633 {
1634         int ret;
1635         DBG_DEBUG("[CEPH] flistxattr(%p, %p, %p, %llu)\n",
1636                   handle, fsp, list, llu(size));
1637         if (!fsp->fsp_flags.is_pathref) {
1638                 /*
1639                  * We can use an io_fd to list xattrs.
1640                  */
1641                 ret = ceph_flistxattr(handle->data,
1642                                         fsp_get_io_fd(fsp),
1643                                         list,
1644                                         size);
1645         } else {
1646                 /*
1647                  * This is no longer a handle based call.
1648                  */
1649                 ret = ceph_listxattr(handle->data,
1650                                         fsp->fsp_name->base_name,
1651                                         list,
1652                                         size);
1653         }
1654         DBG_DEBUG("[CEPH] flistxattr(...) = %d\n", ret);
1655         if (ret < 0) {
1656                 WRAP_RETURN(ret);
1657         }
1658         return (ssize_t)ret;
1659 }
1660
1661 static int cephwrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name)
1662 {
1663         int ret;
1664         DBG_DEBUG("[CEPH] fremovexattr(%p, %p, %s)\n", handle, fsp, name);
1665         if (!fsp->fsp_flags.is_pathref) {
1666                 /*
1667                  * We can use an io_fd to remove xattrs.
1668                  */
1669                 ret = ceph_fremovexattr(handle->data, fsp_get_io_fd(fsp), name);
1670         } else {
1671                 /*
1672                  * This is no longer a handle based call.
1673                  */
1674                 ret = ceph_removexattr(handle->data,
1675                                         fsp->fsp_name->base_name,
1676                                         name);
1677         }
1678         DBG_DEBUG("[CEPH] fremovexattr(...) = %d\n", ret);
1679         WRAP_RETURN(ret);
1680 }
1681
1682 static int cephwrap_fsetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags)
1683 {
1684         int ret;
1685         DBG_DEBUG("[CEPH] fsetxattr(%p, %p, %s, %p, %llu, %d)\n", handle, fsp, name, value, llu(size), flags);
1686         if (!fsp->fsp_flags.is_pathref) {
1687                 /*
1688                  * We can use an io_fd to set xattrs.
1689                  */
1690                 ret = ceph_fsetxattr(handle->data,
1691                                 fsp_get_io_fd(fsp),
1692                                 name,
1693                                 value,
1694                                 size,
1695                                 flags);
1696         } else {
1697                 /*
1698                  * This is no longer a handle based call.
1699                  */
1700                 ret = ceph_setxattr(handle->data,
1701                                 fsp->fsp_name->base_name,
1702                                 name,
1703                                 value,
1704                                 size,
1705                                 flags);
1706         }
1707         DBG_DEBUG("[CEPH] fsetxattr(...) = %d\n", ret);
1708         WRAP_RETURN(ret);
1709 }
1710
1711 static bool cephwrap_aio_force(struct vfs_handle_struct *handle, struct files_struct *fsp)
1712 {
1713
1714         /*
1715          * We do not support AIO yet.
1716          */
1717
1718         DBG_DEBUG("[CEPH] cephwrap_aio_force(%p, %p) = false (errno = ENOTSUP)\n", handle, fsp);
1719         errno = ENOTSUP;
1720         return false;
1721 }
1722
1723 static NTSTATUS cephwrap_create_dfs_pathat(struct vfs_handle_struct *handle,
1724                                 struct files_struct *dirfsp,
1725                                 const struct smb_filename *smb_fname,
1726                                 const struct referral *reflist,
1727                                 size_t referral_count)
1728 {
1729         TALLOC_CTX *frame = talloc_stackframe();
1730         NTSTATUS status = NT_STATUS_NO_MEMORY;
1731         int ret;
1732         char *msdfs_link = NULL;
1733         struct smb_filename *full_fname = NULL;
1734
1735         full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1736                                                 dirfsp,
1737                                                 smb_fname);
1738         if (full_fname == NULL) {
1739                 goto out;
1740         }
1741
1742         /* Form the msdfs_link contents */
1743         msdfs_link = msdfs_link_string(frame,
1744                                         reflist,
1745                                         referral_count);
1746         if (msdfs_link == NULL) {
1747                 goto out;
1748         }
1749
1750         ret = ceph_symlink(handle->data,
1751                         msdfs_link,
1752                         full_fname->base_name);
1753         if (ret == 0) {
1754                 status = NT_STATUS_OK;
1755         } else {
1756                 status = map_nt_error_from_unix(-ret);
1757         }
1758
1759   out:
1760
1761         DBG_DEBUG("[CEPH] create_dfs_pathat(%s) = %s\n",
1762                         full_fname != NULL ? full_fname->base_name : "",
1763                         nt_errstr(status));
1764
1765         TALLOC_FREE(frame);
1766         return status;
1767 }
1768
1769 /*
1770  * Read and return the contents of a DFS redirect given a
1771  * pathname. A caller can pass in NULL for ppreflist and
1772  * preferral_count but still determine if this was a
1773  * DFS redirect point by getting NT_STATUS_OK back
1774  * without incurring the overhead of reading and parsing
1775  * the referral contents.
1776  */
1777
1778 static NTSTATUS cephwrap_read_dfs_pathat(struct vfs_handle_struct *handle,
1779                                 TALLOC_CTX *mem_ctx,
1780                                 struct files_struct *dirfsp,
1781                                 struct smb_filename *smb_fname,
1782                                 struct referral **ppreflist,
1783                                 size_t *preferral_count)
1784 {
1785         NTSTATUS status = NT_STATUS_NO_MEMORY;
1786         size_t bufsize;
1787         char *link_target = NULL;
1788         int referral_len;
1789         bool ok;
1790 #if defined(HAVE_BROKEN_READLINK)
1791         char link_target_buf[PATH_MAX];
1792 #else
1793         char link_target_buf[7];
1794 #endif
1795         struct ceph_statx stx = { 0 };
1796         struct smb_filename *full_fname = NULL;
1797         int ret;
1798
1799         if (is_named_stream(smb_fname)) {
1800                 status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
1801                 goto err;
1802         }
1803
1804         if (ppreflist == NULL && preferral_count == NULL) {
1805                 /*
1806                  * We're only checking if this is a DFS
1807                  * redirect. We don't need to return data.
1808                  */
1809                 bufsize = sizeof(link_target_buf);
1810                 link_target = link_target_buf;
1811         } else {
1812                 bufsize = PATH_MAX;
1813                 link_target = talloc_array(mem_ctx, char, bufsize);
1814                 if (!link_target) {
1815                         goto err;
1816                 }
1817         }
1818
1819         full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1820                                                   dirfsp,
1821                                                   smb_fname);
1822         if (full_fname == NULL) {
1823                 status = NT_STATUS_NO_MEMORY;
1824                 goto err;
1825         }
1826
1827         ret = ceph_statx(handle->data,
1828                          full_fname->base_name,
1829                          &stx,
1830                          SAMBA_STATX_ATTR_MASK,
1831                          AT_SYMLINK_NOFOLLOW);
1832         if (ret < 0) {
1833                 status = map_nt_error_from_unix(-ret);
1834                 goto err;
1835         }
1836
1837         referral_len = ceph_readlink(handle->data,
1838                                 full_fname->base_name,
1839                                 link_target,
1840                                 bufsize - 1);
1841         if (referral_len < 0) {
1842                 /* ceph errors are -errno. */
1843                 if (-referral_len == EINVAL) {
1844                         DBG_INFO("%s is not a link.\n",
1845                                 full_fname->base_name);
1846                         status = NT_STATUS_OBJECT_TYPE_MISMATCH;
1847                 } else {
1848                         status = map_nt_error_from_unix(-referral_len);
1849                         DBG_ERR("Error reading "
1850                                 "msdfs link %s: %s\n",
1851                                 full_fname->base_name,
1852                         strerror(errno));
1853                 }
1854                 goto err;
1855         }
1856         link_target[referral_len] = '\0';
1857
1858         DBG_INFO("%s -> %s\n",
1859                         full_fname->base_name,
1860                         link_target);
1861
1862         if (!strnequal(link_target, "msdfs:", 6)) {
1863                 status = NT_STATUS_OBJECT_TYPE_MISMATCH;
1864                 goto err;
1865         }
1866
1867         if (ppreflist == NULL && preferral_count == NULL) {
1868                 /* Early return for checking if this is a DFS link. */
1869                 TALLOC_FREE(full_fname);
1870                 init_stat_ex_from_ceph_statx(&smb_fname->st, &stx);
1871                 return NT_STATUS_OK;
1872         }
1873
1874         ok = parse_msdfs_symlink(mem_ctx,
1875                         lp_msdfs_shuffle_referrals(SNUM(handle->conn)),
1876                         link_target,
1877                         ppreflist,
1878                         preferral_count);
1879
1880         if (ok) {
1881                 init_stat_ex_from_ceph_statx(&smb_fname->st, &stx);
1882                 status = NT_STATUS_OK;
1883         } else {
1884                 status = NT_STATUS_NO_MEMORY;
1885         }
1886
1887   err:
1888
1889         if (link_target != link_target_buf) {
1890                 TALLOC_FREE(link_target);
1891         }
1892         TALLOC_FREE(full_fname);
1893         return status;
1894 }
1895
1896 static struct vfs_fn_pointers ceph_fns = {
1897         /* Disk operations */
1898
1899         .connect_fn = cephwrap_connect,
1900         .disconnect_fn = cephwrap_disconnect,
1901         .disk_free_fn = cephwrap_disk_free,
1902         .get_quota_fn = cephwrap_get_quota,
1903         .set_quota_fn = cephwrap_set_quota,
1904         .statvfs_fn = cephwrap_statvfs,
1905         .fs_capabilities_fn = cephwrap_fs_capabilities,
1906
1907         /* Directory operations */
1908
1909         .fdopendir_fn = cephwrap_fdopendir,
1910         .readdir_fn = cephwrap_readdir,
1911         .rewind_dir_fn = cephwrap_rewinddir,
1912         .mkdirat_fn = cephwrap_mkdirat,
1913         .closedir_fn = cephwrap_closedir,
1914
1915         /* File operations */
1916
1917         .create_dfs_pathat_fn = cephwrap_create_dfs_pathat,
1918         .read_dfs_pathat_fn = cephwrap_read_dfs_pathat,
1919         .openat_fn = cephwrap_openat,
1920         .close_fn = cephwrap_close,
1921         .pread_fn = cephwrap_pread,
1922         .pread_send_fn = cephwrap_pread_send,
1923         .pread_recv_fn = cephwrap_pread_recv,
1924         .pwrite_fn = cephwrap_pwrite,
1925         .pwrite_send_fn = cephwrap_pwrite_send,
1926         .pwrite_recv_fn = cephwrap_pwrite_recv,
1927         .lseek_fn = cephwrap_lseek,
1928         .sendfile_fn = cephwrap_sendfile,
1929         .recvfile_fn = cephwrap_recvfile,
1930         .renameat_fn = cephwrap_renameat,
1931         .fsync_send_fn = cephwrap_fsync_send,
1932         .fsync_recv_fn = cephwrap_fsync_recv,
1933         .stat_fn = cephwrap_stat,
1934         .fstat_fn = cephwrap_fstat,
1935         .lstat_fn = cephwrap_lstat,
1936         .fstatat_fn = cephwrap_fstatat,
1937         .unlinkat_fn = cephwrap_unlinkat,
1938         .fchmod_fn = cephwrap_fchmod,
1939         .fchown_fn = cephwrap_fchown,
1940         .lchown_fn = cephwrap_lchown,
1941         .chdir_fn = cephwrap_chdir,
1942         .getwd_fn = cephwrap_getwd,
1943         .fntimes_fn = cephwrap_fntimes,
1944         .ftruncate_fn = cephwrap_ftruncate,
1945         .fallocate_fn = cephwrap_fallocate,
1946         .lock_fn = cephwrap_lock,
1947         .filesystem_sharemode_fn = cephwrap_filesystem_sharemode,
1948         .fcntl_fn = cephwrap_fcntl,
1949         .linux_setlease_fn = cephwrap_linux_setlease,
1950         .getlock_fn = cephwrap_getlock,
1951         .symlinkat_fn = cephwrap_symlinkat,
1952         .readlinkat_fn = cephwrap_readlinkat,
1953         .linkat_fn = cephwrap_linkat,
1954         .mknodat_fn = cephwrap_mknodat,
1955         .realpath_fn = cephwrap_realpath,
1956         .fchflags_fn = cephwrap_fchflags,
1957         .get_real_filename_at_fn = cephwrap_get_real_filename_at,
1958         .connectpath_fn = cephwrap_connectpath,
1959         .fget_dos_attributes_fn = cephwrap_fget_dos_attributes,
1960
1961         /* EA operations. */
1962         .getxattrat_send_fn = vfs_not_implemented_getxattrat_send,
1963         .getxattrat_recv_fn = vfs_not_implemented_getxattrat_recv,
1964         .fgetxattr_fn = cephwrap_fgetxattr,
1965         .flistxattr_fn = cephwrap_flistxattr,
1966         .fremovexattr_fn = cephwrap_fremovexattr,
1967         .fsetxattr_fn = cephwrap_fsetxattr,
1968
1969         /* Posix ACL Operations */
1970         .sys_acl_get_fd_fn = posixacl_xattr_acl_get_fd,
1971         .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
1972         .sys_acl_set_fd_fn = posixacl_xattr_acl_set_fd,
1973         .sys_acl_delete_def_fd_fn = posixacl_xattr_acl_delete_def_fd,
1974
1975         /* aio operations */
1976         .aio_force_fn = cephwrap_aio_force,
1977 };
1978
1979 static_decl_vfs;
1980 NTSTATUS vfs_ceph_init(TALLOC_CTX *ctx)
1981 {
1982         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1983                                 "ceph", &ceph_fns);
1984 }