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 libceph.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 = ceph [any others you need go here]
  31  */
  32
  33 #include "includes.h"
  34 #include "smbd/smbd.h"
  35 #include <dirent.h>
  36 #include <sys/statvfs.h>
  37 #include "cephfs/libcephfs.h"
  38 #include "smbprofile.h"
  39 #include "modules/posixacl_xattr.h"
  40
  41 #undef DBGC_CLASS
  42 #define DBGC_CLASS DBGC_VFS
  43
  44 #ifndef LIBCEPHFS_VERSION
  45 #define LIBCEPHFS_VERSION(maj, min, extra) ((maj << 16) + (min << 8) + extra)
  46 #define LIBCEPHFS_VERSION_CODE LIBCEPHFS_VERSION(0, 0, 0)
  47 #endif
  48
  49 /*
  50  * Use %llu whenever we have a 64bit unsigned int, and cast to (long long unsigned)
  51  */
  52 #define llu(_var) ((long long unsigned)_var)
  53
  54 /*
  55  * Note, libceph's return code model is to return -errno! So we have to convert
  56  * to what Samba expects, with is set errno to -return and return -1
  57  */
  58 #define WRAP_RETURN(_res) \
  59         errno = 0; \
  60         if (_res < 0) { \
  61                 errno = -_res; \
  62                 return -1; \
  63         } \
  64         return _res \
  65
  66 /*
  67  * We mount only one file system and then all shares are assumed to be in that.
  68  * FIXME: If we want to support more than one FS, then we have to deal with
  69  * this differently.
  70  *
  71  * So, cmount tells us if we have been this way before and whether
  72  * we need to mount ceph and cmount_cnt tells us how many times we have
  73  * connected
  74  */
  75 static struct ceph_mount_info * cmount = NULL;
  76 static uint32_t cmount_cnt = 0;
  77
  78 /* Check for NULL pointer parameters in cephwrap_* functions */
  79
  80 /* We don't want to have NULL function pointers lying around.  Someone
  81    is sure to try and execute them.  These stubs are used to prevent
  82    this possibility. */
  83
  84 static int cephwrap_connect(struct vfs_handle_struct *handle,  const char *service, const char *user)
  85 {
  86         int ret;
  87         char buf[256];
  88         int snum = SNUM(handle->conn);
  89         const char *conf_file;
  90         const char *user_id;
  91
  92         if (cmount) {
  93                 handle->data = cmount; /* We have been here before */
  94                 cmount_cnt++;
  95                 return 0;
  96         }
  97
  98         /* if config_file and/or user_id are NULL, ceph will use defaults */
  99         conf_file = lp_parm_const_string(snum, "ceph", "config_file", NULL);
 100         user_id = lp_parm_const_string(snum, "ceph", "user_id", NULL);
 101
 102         DBG_DEBUG("[CEPH] calling: ceph_create\n");
 103         ret = ceph_create(&cmount, user_id);
 104         if (ret) {
 105                 goto err_out;
 106         }
 107
 108         DBG_DEBUG("[CEPH] calling: ceph_conf_read_file with %s\n",
 109                   (conf_file == NULL ? "default path" : conf_file));
 110         ret = ceph_conf_read_file(cmount, conf_file);
 111         if (ret) {
 112                 goto err_cm_release;
 113         }
 114
 115         DBG_DEBUG("[CEPH] calling: ceph_conf_get\n");
 116         ret = ceph_conf_get(cmount, "log file", buf, sizeof(buf));
 117         if (ret < 0) {
 118                 goto err_cm_release;
 119         }
 120
 121         DBG_DEBUG("[CEPH] calling: ceph_mount\n");
 122         ret = ceph_mount(cmount, NULL);
 123         if (ret < 0) {
 124                 goto err_cm_release;
 125         }
 126
 127         /*
 128          * encode mount context/state into our vfs/connection holding structure
 129          * cmount is a ceph_mount_t*
 130          */
 131         handle->data = cmount;
 132         cmount_cnt++;
 133
 134         return 0;
 135
 136 err_cm_release:
 137         ceph_release(cmount);
 138         cmount = NULL;
 139 err_out:
 140         /*
 141          * Handle the error correctly. Ceph returns -errno.
 142          */
 143         DBG_DEBUG("[CEPH] Error return: %s\n", strerror(-ret));
 144         WRAP_RETURN(ret);
 145 }
 146
 147 static void cephwrap_disconnect(struct vfs_handle_struct *handle)
 148 {
 149         int ret;
 150
 151         if (!cmount) {
 152                 DBG_ERR("[CEPH] Error, ceph not mounted\n");
 153                 return;
 154         }
 155
 156         /* Should we unmount/shutdown? Only if the last disconnect? */
 157         if (--cmount_cnt) {
 158                 DBG_DEBUG("[CEPH] Not shuting down CEPH because still more connections\n");
 159                 return;
 160         }
 161
 162         ret = ceph_unmount(cmount);
 163         if (ret < 0) {
 164                 DBG_ERR("[CEPH] failed to unmount: %s\n", strerror(-ret));
 165         }
 166
 167         ret = ceph_release(cmount);
 168         if (ret < 0) {
 169                 DBG_ERR("[CEPH] failed to release: %s\n", strerror(-ret));
 170         }
 171
 172         cmount = NULL;  /* Make it safe */
 173 }
 174
 175 /* Disk operations */
 176
 177 static uint64_t cephwrap_disk_free(struct vfs_handle_struct *handle,
 178                                 const struct smb_filename *smb_fname,
 179                                 uint64_t *bsize,
 180                                 uint64_t *dfree,
 181                                 uint64_t *dsize)
 182 {
 183         struct statvfs statvfs_buf;
 184         int ret;
 185
 186         if (!(ret = ceph_statfs(handle->data, smb_fname->base_name,
 187                         &statvfs_buf))) {
 188                 /*
 189                  * Provide all the correct values.
 190                  */
 191                 *bsize = statvfs_buf.f_bsize;
 192                 *dfree = statvfs_buf.f_bavail;
 193                 *dsize = statvfs_buf.f_blocks;
 194                 DBG_DEBUG("[CEPH] bsize: %llu, dfree: %llu, dsize: %llu\n",
 195                         llu(*bsize), llu(*dfree), llu(*dsize));
 196                 return *dfree;
 197         } else {
 198                 DBG_DEBUG("[CEPH] ceph_statfs returned %d\n", ret);
 199                 WRAP_RETURN(ret);
 200         }
 201 }
 202
 203 static int cephwrap_get_quota(struct vfs_handle_struct *handle,
 204                                 const struct smb_filename *smb_fname,
 205                                 enum SMB_QUOTA_TYPE qtype,
 206                                 unid_t id,
 207                                 SMB_DISK_QUOTA *qt)
 208 {
 209         /* libceph: Ceph does not implement this */
 210 #if 0
 211 /* was ifdef HAVE_SYS_QUOTAS */
 212         int ret;
 213
 214         ret = ceph_get_quota(handle->conn->connectpath, qtype, id, qt);
 215
 216         if (ret) {
 217                 errno = -ret;
 218                 ret = -1;
 219         }
 220
 221         return ret;
 222 #else
 223         errno = ENOSYS;
 224         return -1;
 225 #endif
 226 }
 227
 228 static int cephwrap_set_quota(struct vfs_handle_struct *handle,  enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
 229 {
 230         /* libceph: Ceph does not implement this */
 231 #if 0
 232 /* was ifdef HAVE_SYS_QUOTAS */
 233         int ret;
 234
 235         ret = ceph_set_quota(handle->conn->connectpath, qtype, id, qt);
 236         if (ret) {
 237                 errno = -ret;
 238                 ret = -1;
 239         }
 240
 241         return ret;
 242 #else
 243         WRAP_RETURN(-ENOSYS);
 244 #endif
 245 }
 246
 247 static int cephwrap_statvfs(struct vfs_handle_struct *handle,
 248                                 const struct smb_filename *smb_fname,
 249                                 vfs_statvfs_struct *statbuf)
 250 {
 251         struct statvfs statvfs_buf;
 252         int ret;
 253
 254         ret = ceph_statfs(handle->data, smb_fname->base_name, &statvfs_buf);
 255         if (ret < 0) {
 256                 WRAP_RETURN(ret);
 257         } else {
 258                 statbuf->OptimalTransferSize = statvfs_buf.f_frsize;
 259                 statbuf->BlockSize = statvfs_buf.f_bsize;
 260                 statbuf->TotalBlocks = statvfs_buf.f_blocks;
 261                 statbuf->BlocksAvail = statvfs_buf.f_bfree;
 262                 statbuf->UserBlocksAvail = statvfs_buf.f_bavail;
 263                 statbuf->TotalFileNodes = statvfs_buf.f_files;
 264                 statbuf->FreeFileNodes = statvfs_buf.f_ffree;
 265                 statbuf->FsIdentifier = statvfs_buf.f_fsid;
 266                 DBG_DEBUG("[CEPH] f_bsize: %ld, f_blocks: %ld, f_bfree: %ld, f_bavail: %ld\n",
 267                         (long int)statvfs_buf.f_bsize, (long int)statvfs_buf.f_blocks,
 268                         (long int)statvfs_buf.f_bfree, (long int)statvfs_buf.f_bavail);
 269         }
 270         return ret;
 271 }
 272
 273 /* Directory operations */
 274
 275 static DIR *cephwrap_opendir(struct vfs_handle_struct *handle,
 276                              const struct smb_filename *smb_fname,
 277                              const char *mask, uint32_t attr)
 278 {
 279         int ret = 0;
 280         struct ceph_dir_result *result;
 281         DBG_DEBUG("[CEPH] opendir(%p, %s)\n", handle, smb_fname->base_name);
 282
 283         /* Returns NULL if it does not exist or there are problems ? */
 284         ret = ceph_opendir(handle->data, smb_fname->base_name, &result);
 285         if (ret < 0) {
 286                 result = NULL;
 287                 errno = -ret; /* We return result which is NULL in this case */
 288         }
 289
 290         DBG_DEBUG("[CEPH] opendir(...) = %d\n", ret);
 291         return (DIR *) result;
 292 }
 293
 294 static DIR *cephwrap_fdopendir(struct vfs_handle_struct *handle,
 295                                struct files_struct *fsp,
 296                                const char *mask,
 297                                uint32_t attributes)
 298 {
 299         int ret = 0;
 300         struct ceph_dir_result *result;
 301         DBG_DEBUG("[CEPH] fdopendir(%p, %p)\n", handle, fsp);
 302
 303         ret = ceph_opendir(handle->data, fsp->fsp_name->base_name, &result);
 304         if (ret < 0) {
 305                 result = NULL;
 306                 errno = -ret; /* We return result which is NULL in this case */
 307         }
 308
 309         DBG_DEBUG("[CEPH] fdopendir(...) = %d\n", ret);
 310         return (DIR *) result;
 311 }
 312
 313 static struct dirent *cephwrap_readdir(struct vfs_handle_struct *handle,
 314                                        DIR *dirp,
 315                                        SMB_STRUCT_STAT *sbuf)
 316 {
 317         struct dirent *result;
 318
 319         DBG_DEBUG("[CEPH] readdir(%p, %p)\n", handle, dirp);
 320         result = ceph_readdir(handle->data, (struct ceph_dir_result *) dirp);
 321         DBG_DEBUG("[CEPH] readdir(...) = %p\n", result);
 322
 323         /* Default Posix readdir() does not give us stat info.
 324          * Set to invalid to indicate we didn't return this info. */
 325         if (sbuf)
 326                 SET_STAT_INVALID(*sbuf);
 327         return result;
 328 }
 329
 330 static void cephwrap_seekdir(struct vfs_handle_struct *handle, DIR *dirp, long offset)
 331 {
 332         DBG_DEBUG("[CEPH] seekdir(%p, %p, %ld)\n", handle, dirp, offset);
 333         ceph_seekdir(handle->data, (struct ceph_dir_result *) dirp, offset);
 334 }
 335
 336 static long cephwrap_telldir(struct vfs_handle_struct *handle, DIR *dirp)
 337 {
 338         long ret;
 339         DBG_DEBUG("[CEPH] telldir(%p, %p)\n", handle, dirp);
 340         ret = ceph_telldir(handle->data, (struct ceph_dir_result *) dirp);
 341         DBG_DEBUG("[CEPH] telldir(...) = %ld\n", ret);
 342         WRAP_RETURN(ret);
 343 }
 344
 345 static void cephwrap_rewinddir(struct vfs_handle_struct *handle, DIR *dirp)
 346 {
 347         DBG_DEBUG("[CEPH] rewinddir(%p, %p)\n", handle, dirp);
 348         ceph_rewinddir(handle->data, (struct ceph_dir_result *) dirp);
 349 }
 350
 351 static int cephwrap_mkdir(struct vfs_handle_struct *handle,
 352                           const struct smb_filename *smb_fname,
 353                           mode_t mode)
 354 {
 355         int result;
 356         bool has_dacl = False;
 357         char *parent = NULL;
 358         const char *path = smb_fname->base_name;
 359
 360         DBG_DEBUG("[CEPH] mkdir(%p, %s)\n", handle, path);
 361
 362         if (lp_inherit_acls(SNUM(handle->conn))
 363             && parent_dirname(talloc_tos(), path, &parent, NULL)
 364             && (has_dacl = directory_has_default_acl(handle->conn, parent)))
 365                 mode = 0777;
 366
 367         TALLOC_FREE(parent);
 368
 369         result = ceph_mkdir(handle->data, path, mode);
 370
 371         /*
 372          * Note. This order is important
 373          */
 374         if (result) {
 375                 WRAP_RETURN(result);
 376         } else if (result == 0 && !has_dacl) {
 377                 /*
 378                  * We need to do this as the default behavior of POSIX ACLs
 379                  * is to set the mask to be the requested group permission
 380                  * bits, not the group permission bits to be the requested
 381                  * group permission bits. This is not what we want, as it will
 382                  * mess up any inherited ACL bits that were set. JRA.
 383                  */
 384                 int saved_errno = errno; /* We may get ENOSYS */
 385                 if ((SMB_VFS_CHMOD_ACL(handle->conn, smb_fname, mode) == -1) &&
 386                                 (errno == ENOSYS)) {
 387                         errno = saved_errno;
 388                 }
 389         }
 390
 391         return result;
 392 }
 393
 394 static int cephwrap_rmdir(struct vfs_handle_struct *handle,
 395                         const struct smb_filename *smb_fname)
 396 {
 397         int result;
 398
 399         DBG_DEBUG("[CEPH] rmdir(%p, %s)\n", handle, smb_fname->base_name);
 400         result = ceph_rmdir(handle->data, smb_fname->base_name);
 401         DBG_DEBUG("[CEPH] rmdir(...) = %d\n", result);
 402         WRAP_RETURN(result);
 403 }
 404
 405 static int cephwrap_closedir(struct vfs_handle_struct *handle, DIR *dirp)
 406 {
 407         int result;
 408
 409         DBG_DEBUG("[CEPH] closedir(%p, %p)\n", handle, dirp);
 410         result = ceph_closedir(handle->data, (struct ceph_dir_result *) dirp);
 411         DBG_DEBUG("[CEPH] closedir(...) = %d\n", result);
 412         WRAP_RETURN(result);
 413 }
 414
 415 /* File operations */
 416
 417 static int cephwrap_open(struct vfs_handle_struct *handle,
 418                         struct smb_filename *smb_fname,
 419                         files_struct *fsp, int flags, mode_t mode)
 420 {
 421         int result = -ENOENT;
 422         DBG_DEBUG("[CEPH] open(%p, %s, %p, %d, %d)\n", handle,
 423                   smb_fname_str_dbg(smb_fname), fsp, flags, mode);
 424
 425         if (smb_fname->stream_name) {
 426                 goto out;
 427         }
 428
 429         result = ceph_open(handle->data, smb_fname->base_name, flags, mode);
 430 out:
 431         DBG_DEBUG("[CEPH] open(...) = %d\n", result);
 432         WRAP_RETURN(result);
 433 }
 434
 435 static int cephwrap_close(struct vfs_handle_struct *handle, files_struct *fsp)
 436 {
 437         int result;
 438
 439         DBG_DEBUG("[CEPH] close(%p, %p)\n", handle, fsp);
 440         result = ceph_close(handle->data, fsp->fh->fd);
 441         DBG_DEBUG("[CEPH] close(...) = %d\n", result);
 442
 443         WRAP_RETURN(result);
 444 }
 445
 446 static ssize_t cephwrap_read(struct vfs_handle_struct *handle, files_struct *fsp, void *data, size_t n)
 447 {
 448         ssize_t result;
 449
 450         DBG_DEBUG("[CEPH] read(%p, %p, %p, %llu)\n", handle, fsp, data, llu(n));
 451
 452         /* Using -1 for the offset means read/write rather than pread/pwrite */
 453         result = ceph_read(handle->data, fsp->fh->fd, data, n, -1);
 454         DBG_DEBUG("[CEPH] read(...) = %llu\n", llu(result));
 455         WRAP_RETURN(result);
 456 }
 457
 458 static ssize_t cephwrap_pread(struct vfs_handle_struct *handle, files_struct *fsp, void *data,
 459                         size_t n, off_t offset)
 460 {
 461         ssize_t result;
 462
 463         DBG_DEBUG("[CEPH] pread(%p, %p, %p, %llu, %llu)\n", handle, fsp, data, llu(n), llu(offset));
 464
 465         result = ceph_read(handle->data, fsp->fh->fd, data, n, offset);
 466         DBG_DEBUG("[CEPH] pread(...) = %llu\n", llu(result));
 467         WRAP_RETURN(result);
 468 }
 469
 470
 471 static ssize_t cephwrap_write(struct vfs_handle_struct *handle, files_struct *fsp, const void *data, size_t n)
 472 {
 473         ssize_t result;
 474
 475         DBG_DEBUG("[CEPH] write(%p, %p, %p, %llu)\n", handle, fsp, data, llu(n));
 476
 477         result = ceph_write(handle->data, fsp->fh->fd, data, n, -1);
 478
 479         DBG_DEBUG("[CEPH] write(...) = %llu\n", llu(result));
 480         if (result < 0) {
 481                 WRAP_RETURN(result);
 482         }
 483         fsp->fh->pos += result;
 484         return result;
 485 }
 486
 487 static ssize_t cephwrap_pwrite(struct vfs_handle_struct *handle, files_struct *fsp, const void *data,
 488                         size_t n, off_t offset)
 489 {
 490         ssize_t result;
 491
 492         DBG_DEBUG("[CEPH] pwrite(%p, %p, %p, %llu, %llu)\n", handle, fsp, data, llu(n), llu(offset));
 493         result = ceph_write(handle->data, fsp->fh->fd, data, n, offset);
 494         DBG_DEBUG("[CEPH] pwrite(...) = %llu\n", llu(result));
 495         WRAP_RETURN(result);
 496 }
 497
 498 static off_t cephwrap_lseek(struct vfs_handle_struct *handle, files_struct *fsp, off_t offset, int whence)
 499 {
 500         off_t result = 0;
 501
 502         DBG_DEBUG("[CEPH] cephwrap_lseek\n");
 503         /* Cope with 'stat' file opens. */
 504         if (fsp->fh->fd != -1) {
 505                 result = ceph_lseek(handle->data, fsp->fh->fd, offset, whence);
 506         }
 507         WRAP_RETURN(result);
 508 }
 509
 510 static ssize_t cephwrap_sendfile(struct vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *hdr,
 511                         off_t offset, size_t n)
 512 {
 513         /*
 514          * We cannot support sendfile because libceph is in user space.
 515          */
 516         DBG_DEBUG("[CEPH] cephwrap_sendfile\n");
 517         errno = ENOTSUP;
 518         return -1;
 519 }
 520
 521 static ssize_t cephwrap_recvfile(struct vfs_handle_struct *handle,
 522                         int fromfd,
 523                         files_struct *tofsp,
 524                         off_t offset,
 525                         size_t n)
 526 {
 527         /*
 528          * We cannot support recvfile because libceph is in user space.
 529          */
 530         DBG_DEBUG("[CEPH] cephwrap_recvfile\n");
 531         errno=ENOTSUP;
 532         return -1;
 533 }
 534
 535 static int cephwrap_rename(struct vfs_handle_struct *handle,
 536                           const struct smb_filename *smb_fname_src,
 537                           const struct smb_filename *smb_fname_dst)
 538 {
 539         int result = -1;
 540         DBG_DEBUG("[CEPH] cephwrap_rename\n");
 541         if (smb_fname_src->stream_name || smb_fname_dst->stream_name) {
 542                 errno = ENOENT;
 543                 return result;
 544         }
 545
 546         result = ceph_rename(handle->data, smb_fname_src->base_name, smb_fname_dst->base_name);
 547         WRAP_RETURN(result);
 548 }
 549
 550 static int cephwrap_fsync(struct vfs_handle_struct *handle, files_struct *fsp)
 551 {
 552         int result;
 553         DBG_DEBUG("[CEPH] cephwrap_fsync\n");
 554         result = ceph_fsync(handle->data, fsp->fh->fd, false);
 555         WRAP_RETURN(result);
 556 }
 557
 558 #ifdef HAVE_CEPH_STATX
 559 #define SAMBA_STATX_ATTR_MASK   (CEPH_STATX_BASIC_STATS|CEPH_STATX_BTIME)
 560
 561 static void init_stat_ex_from_ceph_statx(struct stat_ex *dst, const struct ceph_statx *stx)
 562 {
 563         if ((stx->stx_mask & SAMBA_STATX_ATTR_MASK) != SAMBA_STATX_ATTR_MASK)
 564                 DBG_WARNING("%s: stx->stx_mask is incorrect (wanted %x, got %x)",
 565                                 __func__, SAMBA_STATX_ATTR_MASK, stx->stx_mask);
 566
 567         dst->st_ex_dev = stx->stx_dev;
 568         dst->st_ex_rdev = stx->stx_rdev;
 569         dst->st_ex_ino = stx->stx_ino;
 570         dst->st_ex_mode = stx->stx_mode;
 571         dst->st_ex_uid = stx->stx_uid;
 572         dst->st_ex_gid = stx->stx_gid;
 573         dst->st_ex_size = stx->stx_size;
 574         dst->st_ex_nlink = stx->stx_nlink;
 575         dst->st_ex_atime = stx->stx_atime;
 576         dst->st_ex_btime = stx->stx_btime;
 577         dst->st_ex_ctime = stx->stx_ctime;
 578         dst->st_ex_mtime = stx->stx_mtime;
 579         dst->st_ex_calculated_birthtime = false;
 580         dst->st_ex_blksize = stx->stx_blksize;
 581         dst->st_ex_blocks = stx->stx_blocks;
 582 }
 583
 584 static int cephwrap_stat(struct vfs_handle_struct *handle,
 585                         struct smb_filename *smb_fname)
 586 {
 587         int result = -1;
 588         struct ceph_statx stx;
 589
 590         DBG_DEBUG("[CEPH] stat(%p, %s)\n", handle, smb_fname_str_dbg(smb_fname));
 591
 592         if (smb_fname->stream_name) {
 593                 errno = ENOENT;
 594                 return result;
 595         }
 596
 597         result = ceph_statx(handle->data, smb_fname->base_name, &stx,
 598                                 SAMBA_STATX_ATTR_MASK, 0);
 599         DBG_DEBUG("[CEPH] statx(...) = %d\n", result);
 600         if (result < 0) {
 601                 WRAP_RETURN(result);
 602         } else {
 603                 DBG_DEBUG("[CEPH]\tstx = {dev = %llx, ino = %llu, mode = 0x%x, nlink = %llu, "
 604                            "uid = %d, gid = %d, rdev = %llx, size = %llu, blksize = %llu, "
 605                            "blocks = %llu, atime = %llu, mtime = %llu, ctime = %llu, btime = %llu}\n",
 606                            llu(stx.stx_dev), llu(stx.stx_ino), stx.stx_mode,
 607                            llu(stx.stx_nlink), stx.stx_uid, stx.stx_gid, llu(stx.stx_rdev),
 608                            llu(stx.stx_size), llu(stx.stx_blksize),
 609                            llu(stx.stx_blocks), llu(stx.stx_atime.tv_sec), llu(stx.stx_mtime.tv_sec),
 610                            llu(stx.stx_ctime.tv_sec), llu(stx.stx_btime.tv_sec));
 611         }
 612         init_stat_ex_from_ceph_statx(&smb_fname->st, &stx);
 613         DBG_DEBUG("[CEPH] mode = 0x%x\n", smb_fname->st.st_ex_mode);
 614         return result;
 615 }
 616
 617 static int cephwrap_fstat(struct vfs_handle_struct *handle, files_struct *fsp, SMB_STRUCT_STAT *sbuf)
 618 {
 619         int result = -1;
 620         struct ceph_statx stx;
 621
 622         DBG_DEBUG("[CEPH] fstat(%p, %d)\n", handle, fsp->fh->fd);
 623         result = ceph_fstatx(handle->data, fsp->fh->fd, &stx,
 624                                 SAMBA_STATX_ATTR_MASK, 0);
 625         DBG_DEBUG("[CEPH] fstat(...) = %d\n", result);
 626         if (result < 0) {
 627                 WRAP_RETURN(result);
 628         } else {
 629                 DBG_DEBUG("[CEPH]\tstx = {dev = %llx, ino = %llu, mode = 0x%x, nlink = %llu, "
 630                            "uid = %d, gid = %d, rdev = %llx, size = %llu, blksize = %llu, "
 631                            "blocks = %llu, atime = %llu, mtime = %llu, ctime = %llu, btime = %llu}\n",
 632                            llu(stx.stx_dev), llu(stx.stx_ino), stx.stx_mode,
 633                            llu(stx.stx_nlink), stx.stx_uid, stx.stx_gid, llu(stx.stx_rdev),
 634                            llu(stx.stx_size), llu(stx.stx_blksize),
 635                            llu(stx.stx_blocks), llu(stx.stx_atime.tv_sec), llu(stx.stx_mtime.tv_sec),
 636                            llu(stx.stx_ctime.tv_sec), llu(stx.stx_btime.tv_sec));
 637         }
 638         init_stat_ex_from_ceph_statx(sbuf, &stx);
 639         DBG_DEBUG("[CEPH] mode = 0x%x\n", sbuf->st_ex_mode);
 640         return result;
 641 }
 642
 643 static int cephwrap_lstat(struct vfs_handle_struct *handle,
 644                          struct smb_filename *smb_fname)
 645 {
 646         int result = -1;
 647         struct ceph_statx stx;
 648
 649         DBG_DEBUG("[CEPH] lstat(%p, %s)\n", handle, smb_fname_str_dbg(smb_fname));
 650
 651         if (smb_fname->stream_name) {
 652                 errno = ENOENT;
 653                 return result;
 654         }
 655
 656         result = ceph_statx(handle->data, smb_fname->base_name, &stx,
 657                                 SAMBA_STATX_ATTR_MASK, AT_SYMLINK_NOFOLLOW);
 658         DBG_DEBUG("[CEPH] lstat(...) = %d\n", result);
 659         if (result < 0) {
 660                 WRAP_RETURN(result);
 661         }
 662         init_stat_ex_from_ceph_statx(&smb_fname->st, &stx);
 663         return result;
 664 }
 665
 666 static int cephwrap_ntimes(struct vfs_handle_struct *handle,
 667                          const struct smb_filename *smb_fname,
 668                          struct smb_file_time *ft)
 669 {
 670         struct ceph_statx stx = { 0 };
 671         int result;
 672         int mask = 0;
 673
 674         if (!null_timespec(ft->atime)) {
 675                 stx.stx_atime = ft->atime;
 676                 mask |= CEPH_SETATTR_ATIME;
 677         }
 678         if (!null_timespec(ft->mtime)) {
 679                 stx.stx_mtime = ft->mtime;
 680                 mask |= CEPH_SETATTR_MTIME;
 681         }
 682         if (!null_timespec(ft->create_time)) {
 683                 stx.stx_btime = ft->create_time;
 684                 mask |= CEPH_SETATTR_BTIME;
 685         }
 686
 687         if (!mask) {
 688                 return 0;
 689         }
 690
 691         result = ceph_setattrx(handle->data, smb_fname->base_name, &stx, mask, 0);
 692         DBG_DEBUG("[CEPH] ntimes(%p, %s, {%ld, %ld, %ld, %ld}) = %d\n", handle, smb_fname_str_dbg(smb_fname),
 693                                 ft->mtime.tv_sec, ft->atime.tv_sec, ft->ctime.tv_sec,
 694                                 ft->create_time.tv_sec, result);
 695         return result;
 696 }
 697
 698 #else /* HAVE_CEPH_STATX */
 699
 700 static int cephwrap_stat(struct vfs_handle_struct *handle,
 701                         struct smb_filename *smb_fname)
 702 {
 703         int result = -1;
 704         struct stat stbuf;
 705
 706         DBG_DEBUG("[CEPH] stat(%p, %s)\n", handle, smb_fname_str_dbg(smb_fname));
 707
 708         if (smb_fname->stream_name) {
 709                 errno = ENOENT;
 710                 return result;
 711         }
 712
 713         result = ceph_stat(handle->data, smb_fname->base_name, (struct stat *) &stbuf);
 714         DBG_DEBUG("[CEPH] stat(...) = %d\n", result);
 715         if (result < 0) {
 716                 WRAP_RETURN(result);
 717         } else {
 718                 DBG_DEBUG("[CEPH]\tstbuf = {dev = %llu, ino = %llu, mode = 0x%x, nlink = %llu, "
 719                            "uid = %d, gid = %d, rdev = %llu, size = %llu, blksize = %llu, "
 720                            "blocks = %llu, atime = %llu, mtime = %llu, ctime = %llu}\n",
 721                            llu(stbuf.st_dev), llu(stbuf.st_ino), stbuf.st_mode, llu(stbuf.st_nlink),
 722                            stbuf.st_uid, stbuf.st_gid, llu(stbuf.st_rdev), llu(stbuf.st_size), llu(stbuf.st_blksize),
 723                            llu(stbuf.st_blocks), llu(stbuf.st_atime), llu(stbuf.st_mtime), llu(stbuf.st_ctime));
 724         }
 725         init_stat_ex_from_stat(
 726                         &smb_fname->st, &stbuf,
 727                         lp_fake_directory_create_times(SNUM(handle->conn)));
 728         DBG_DEBUG("[CEPH] mode = 0x%x\n", smb_fname->st.st_ex_mode);
 729         return result;
 730 }
 731
 732 static int cephwrap_fstat(struct vfs_handle_struct *handle, files_struct *fsp, SMB_STRUCT_STAT *sbuf)
 733 {
 734         int result = -1;
 735         struct stat stbuf;
 736
 737         DBG_DEBUG("[CEPH] fstat(%p, %d)\n", handle, fsp->fh->fd);
 738         result = ceph_fstat(handle->data, fsp->fh->fd, (struct stat *) &stbuf);
 739         DBG_DEBUG("[CEPH] fstat(...) = %d\n", result);
 740         if (result < 0) {
 741                 WRAP_RETURN(result);
 742         } else {
 743                 DBG_DEBUG("[CEPH]\tstbuf = {dev = %llu, ino = %llu, mode = 0x%x, nlink = %llu, "
 744                            "uid = %d, gid = %d, rdev = %llu, size = %llu, blksize = %llu, "
 745                            "blocks = %llu, atime = %llu, mtime = %llu, ctime = %llu}\n",
 746                            llu(stbuf.st_dev), llu(stbuf.st_ino), stbuf.st_mode, llu(stbuf.st_nlink),
 747                            stbuf.st_uid, stbuf.st_gid, llu(stbuf.st_rdev), llu(stbuf.st_size), llu(stbuf.st_blksize),
 748                            llu(stbuf.st_blocks), llu(stbuf.st_atime), llu(stbuf.st_mtime), llu(stbuf.st_ctime));
 749         }
 750
 751         init_stat_ex_from_stat(
 752                         sbuf, &stbuf,
 753                         lp_fake_directory_create_times(SNUM(handle->conn)));
 754         DBG_DEBUG("[CEPH] mode = 0x%x\n", sbuf->st_ex_mode);
 755         return result;
 756 }
 757
 758 static int cephwrap_lstat(struct vfs_handle_struct *handle,
 759                          struct smb_filename *smb_fname)
 760 {
 761         int result = -1;
 762         struct stat stbuf;
 763
 764         DBG_DEBUG("[CEPH] lstat(%p, %s)\n", handle, smb_fname_str_dbg(smb_fname));
 765
 766         if (smb_fname->stream_name) {
 767                 errno = ENOENT;
 768                 return result;
 769         }
 770
 771         result = ceph_lstat(handle->data, smb_fname->base_name, &stbuf);
 772         DBG_DEBUG("[CEPH] lstat(...) = %d\n", result);
 773         if (result < 0) {
 774                 WRAP_RETURN(result);
 775         }
 776         init_stat_ex_from_stat(
 777                         &smb_fname->st, &stbuf,
 778                         lp_fake_directory_create_times(SNUM(handle->conn)));
 779         return result;
 780 }
 781
 782 static int cephwrap_ntimes(struct vfs_handle_struct *handle,
 783                          const struct smb_filename *smb_fname,
 784                          struct smb_file_time *ft)
 785 {
 786         struct utimbuf buf;
 787         int result;
 788
 789         if (null_timespec(ft->atime)) {
 790                 buf.actime = smb_fname->st.st_ex_atime.tv_sec;
 791         } else {
 792                 buf.actime = ft->atime.tv_sec;
 793         }
 794         if (null_timespec(ft->mtime)) {
 795                 buf.modtime = smb_fname->st.st_ex_mtime.tv_sec;
 796         } else {
 797                 buf.modtime = ft->mtime.tv_sec;
 798         }
 799         if (!null_timespec(ft->create_time)) {
 800                 set_create_timespec_ea(handle->conn, smb_fname,
 801                                        ft->create_time);
 802         }
 803         if (buf.actime == smb_fname->st.st_ex_atime.tv_sec &&
 804             buf.modtime == smb_fname->st.st_ex_mtime.tv_sec) {
 805                 return 0;
 806         }
 807
 808         result = ceph_utime(handle->data, smb_fname->base_name, &buf);
 809         DBG_DEBUG("[CEPH] ntimes(%p, %s, {%ld, %ld, %ld, %ld}) = %d\n", handle, smb_fname_str_dbg(smb_fname),
 810                                 ft->mtime.tv_sec, ft->atime.tv_sec, ft->ctime.tv_sec,
 811                                 ft->create_time.tv_sec, result);
 812         return result;
 813 }
 814 #endif /* HAVE_CEPH_STATX */
 815
 816 static int cephwrap_unlink(struct vfs_handle_struct *handle,
 817                           const struct smb_filename *smb_fname)
 818 {
 819         int result = -1;
 820
 821         DBG_DEBUG("[CEPH] unlink(%p, %s)\n", handle, smb_fname_str_dbg(smb_fname));
 822         if (smb_fname->stream_name) {
 823                 errno = ENOENT;
 824                 return result;
 825         }
 826         result = ceph_unlink(handle->data, smb_fname->base_name);
 827         DBG_DEBUG("[CEPH] unlink(...) = %d\n", result);
 828         WRAP_RETURN(result);
 829 }
 830
 831 static int cephwrap_chmod(struct vfs_handle_struct *handle,
 832                         const struct smb_filename *smb_fname,
 833                         mode_t mode)
 834 {
 835         int result;
 836
 837         DBG_DEBUG("[CEPH] chmod(%p, %s, %d)\n", handle, smb_fname->base_name, mode);
 838
 839         /*
 840          * We need to do this due to the fact that the default POSIX ACL
 841          * chmod modifies the ACL *mask* for the group owner, not the
 842          * group owner bits directly. JRA.
 843          */
 844
 845
 846         {
 847                 int saved_errno = errno; /* We might get ENOSYS */
 848                 result = SMB_VFS_CHMOD_ACL(handle->conn,
 849                                         smb_fname,
 850                                         mode);
 851                 if (result == 0) {
 852                         return result;
 853                 }
 854                 /* Error - return the old errno. */
 855                 errno = saved_errno;
 856         }
 857
 858         result = ceph_chmod(handle->data, smb_fname->base_name, mode);
 859         DBG_DEBUG("[CEPH] chmod(...) = %d\n", result);
 860         WRAP_RETURN(result);
 861 }
 862
 863 static int cephwrap_fchmod(struct vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
 864 {
 865         int result;
 866
 867         DBG_DEBUG("[CEPH] fchmod(%p, %p, %d)\n", handle, fsp, mode);
 868
 869         /*
 870          * We need to do this due to the fact that the default POSIX ACL
 871          * chmod modifies the ACL *mask* for the group owner, not the
 872          * group owner bits directly. JRA.
 873          */
 874
 875         {
 876                 int saved_errno = errno; /* We might get ENOSYS */
 877                 if ((result = SMB_VFS_FCHMOD_ACL(fsp, mode)) == 0) {
 878                         return result;
 879                 }
 880                 /* Error - return the old errno. */
 881                 errno = saved_errno;
 882         }
 883
 884 #if defined(HAVE_FCHMOD)
 885         result = ceph_fchmod(handle->data, fsp->fh->fd, mode);
 886         DBG_DEBUG("[CEPH] fchmod(...) = %d\n", result);
 887         WRAP_RETURN(result);
 888 #else
 889         errno = ENOSYS;
 890 #endif
 891         return -1;
 892 }
 893
 894 static int cephwrap_chown(struct vfs_handle_struct *handle,
 895                         const struct smb_filename *smb_fname,
 896                         uid_t uid,
 897                         gid_t gid)
 898 {
 899         int result;
 900         DBG_DEBUG("[CEPH] chown(%p, %s, %d, %d)\n", handle, smb_fname->base_name, uid, gid);
 901         result = ceph_chown(handle->data, smb_fname->base_name, uid, gid);
 902         DBG_DEBUG("[CEPH] chown(...) = %d\n", result);
 903         WRAP_RETURN(result);
 904 }
 905
 906 static int cephwrap_fchown(struct vfs_handle_struct *handle, files_struct *fsp, uid_t uid, gid_t gid)
 907 {
 908         int result;
 909 #ifdef HAVE_FCHOWN
 910
 911         DBG_DEBUG("[CEPH] fchown(%p, %p, %d, %d)\n", handle, fsp, uid, gid);
 912         result = ceph_fchown(handle->data, fsp->fh->fd, uid, gid);
 913         DBG_DEBUG("[CEPH] fchown(...) = %d\n", result);
 914         WRAP_RETURN(result);
 915 #else
 916         errno = ENOSYS;
 917         result = -1;
 918 #endif
 919         return result;
 920 }
 921
 922 static int cephwrap_lchown(struct vfs_handle_struct *handle,
 923                         const struct smb_filename *smb_fname,
 924                         uid_t uid,
 925                         gid_t gid)
 926 {
 927         int result;
 928         DBG_DEBUG("[CEPH] lchown(%p, %s, %d, %d)\n", handle, smb_fname->base_name, uid, gid);
 929         result = ceph_lchown(handle->data, smb_fname->base_name, uid, gid);
 930         DBG_DEBUG("[CEPH] lchown(...) = %d\n", result);
 931         WRAP_RETURN(result);
 932 }
 933
 934 static int cephwrap_chdir(struct vfs_handle_struct *handle,
 935                         const struct smb_filename *smb_fname)
 936 {
 937         int result = -1;
 938         DBG_DEBUG("[CEPH] chdir(%p, %s)\n", handle, smb_fname->base_name);
 939         /*
 940          * If the path is just / use chdir because Ceph is below / and
 941          * cannot deal with changing directory above its mount point
 942          */
 943         if (!strcmp(smb_fname->base_name, "/")) {
 944                 return chdir(smb_fname->base_name);
 945         }
 946
 947         result = ceph_chdir(handle->data, smb_fname->base_name);
 948         DBG_DEBUG("[CEPH] chdir(...) = %d\n", result);
 949         WRAP_RETURN(result);
 950 }
 951
 952 static char *cephwrap_getwd(struct vfs_handle_struct *handle)
 953 {
 954         const char *cwd = ceph_getcwd(handle->data);
 955         DBG_DEBUG("[CEPH] getwd(%p) = %s\n", handle, cwd);
 956         return SMB_STRDUP(cwd);
 957 }
 958
 959 static int strict_allocate_ftruncate(struct vfs_handle_struct *handle, files_struct *fsp, off_t len)
 960 {
 961         off_t space_to_write;
 962         uint64_t space_avail;
 963         uint64_t bsize,dfree,dsize;
 964         int ret;
 965         NTSTATUS status;
 966         SMB_STRUCT_STAT *pst;
 967
 968         status = vfs_stat_fsp(fsp);
 969         if (!NT_STATUS_IS_OK(status)) {
 970                 return -1;
 971         }
 972         pst = &fsp->fsp_name->st;
 973
 974 #ifdef S_ISFIFO
 975         if (S_ISFIFO(pst->st_ex_mode))
 976                 return 0;
 977 #endif
 978
 979         if (pst->st_ex_size == len)
 980                 return 0;
 981
 982         /* Shrink - just ftruncate. */
 983         if (pst->st_ex_size > len)
 984                 return ftruncate(fsp->fh->fd, len);
 985
 986         space_to_write = len - pst->st_ex_size;
 987
 988         /* for allocation try fallocate first. This can fail on some
 989            platforms e.g. when the filesystem doesn't support it and no
 990            emulation is being done by the libc (like on AIX with JFS1). In that
 991            case we do our own emulation. fallocate implementations can
 992            return ENOTSUP or EINVAL in cases like that. */
 993         ret = SMB_VFS_FALLOCATE(fsp, 0, pst->st_ex_size, space_to_write);
 994         if (ret == -1 && errno == ENOSPC) {
 995                 return -1;
 996         }
 997         if (ret == 0) {
 998                 return 0;
 999         }
1000         DEBUG(10,("[CEPH] strict_allocate_ftruncate: SMB_VFS_FALLOCATE failed with "
1001                 "error %d. Falling back to slow manual allocation\n", errno));
1002
1003         /* available disk space is enough or not? */
1004         space_avail =
1005             get_dfree_info(fsp->conn, fsp->fsp_name, &bsize, &dfree, &dsize);
1006         /* space_avail is 1k blocks */
1007         if (space_avail == (uint64_t)-1 ||
1008                         ((uint64_t)space_to_write/1024 > space_avail) ) {
1009                 errno = ENOSPC;
1010                 return -1;
1011         }
1012
1013         /* Write out the real space on disk. */
1014         return vfs_slow_fallocate(fsp, pst->st_ex_size, space_to_write);
1015 }
1016
1017 static int cephwrap_ftruncate(struct vfs_handle_struct *handle, files_struct *fsp, off_t len)
1018 {
1019         int result = -1;
1020         SMB_STRUCT_STAT st;
1021         char c = 0;
1022         off_t currpos;
1023
1024         DBG_DEBUG("[CEPH] ftruncate(%p, %p, %llu\n", handle, fsp, llu(len));
1025
1026         if (lp_strict_allocate(SNUM(fsp->conn))) {
1027                 result = strict_allocate_ftruncate(handle, fsp, len);
1028                 return result;
1029         }
1030
1031         /* we used to just check HAVE_FTRUNCATE_EXTEND and only use
1032            sys_ftruncate if the system supports it. Then I discovered that
1033            you can have some filesystems that support ftruncate
1034            expansion and some that don't! On Linux fat can't do
1035            ftruncate extend but ext2 can. */
1036
1037         result = ceph_ftruncate(handle->data, fsp->fh->fd, len);
1038         if (result == 0)
1039                 goto done;
1040
1041         /* According to W. R. Stevens advanced UNIX prog. Pure 4.3 BSD cannot
1042            extend a file with ftruncate. Provide alternate implementation
1043            for this */
1044         currpos = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
1045         if (currpos == -1) {
1046                 goto done;
1047         }
1048
1049         /* Do an fstat to see if the file is longer than the requested
1050            size in which case the ftruncate above should have
1051            succeeded or shorter, in which case seek to len - 1 and
1052            write 1 byte of zero */
1053         if (SMB_VFS_FSTAT(fsp, &st) == -1) {
1054                 goto done;
1055         }
1056
1057 #ifdef S_ISFIFO
1058         if (S_ISFIFO(st.st_ex_mode)) {
1059                 result = 0;
1060                 goto done;
1061         }
1062 #endif
1063
1064         if (st.st_ex_size == len) {
1065                 result = 0;
1066                 goto done;
1067         }
1068
1069         if (st.st_ex_size > len) {
1070                 /* the sys_ftruncate should have worked */
1071                 goto done;
1072         }
1073
1074         if (SMB_VFS_LSEEK(fsp, len-1, SEEK_SET) != len -1)
1075                 goto done;
1076
1077         if (SMB_VFS_WRITE(fsp, &c, 1)!=1)
1078                 goto done;
1079
1080         /* Seek to where we were */
1081         if (SMB_VFS_LSEEK(fsp, currpos, SEEK_SET) != currpos)
1082                 goto done;
1083         result = 0;
1084
1085   done:
1086
1087         return result;
1088 }
1089
1090 static bool cephwrap_lock(struct vfs_handle_struct *handle, files_struct *fsp, int op, off_t offset, off_t count, int type)
1091 {
1092         DBG_DEBUG("[CEPH] lock\n");
1093         return true;
1094 }
1095
1096 static int cephwrap_kernel_flock(struct vfs_handle_struct *handle, files_struct *fsp,
1097                                 uint32_t share_mode, uint32_t access_mask)
1098 {
1099         DBG_DEBUG("[CEPH] kernel_flock\n");
1100         /*
1101          * We must return zero here and pretend all is good.
1102          * One day we might have this in CEPH.
1103          */
1104         return 0;
1105 }
1106
1107 static bool cephwrap_getlock(struct vfs_handle_struct *handle, files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid)
1108 {
1109         DBG_DEBUG("[CEPH] getlock returning false and errno=0\n");
1110
1111         errno = 0;
1112         return false;
1113 }
1114
1115 /*
1116  * We cannot let this fall through to the default, because the file might only
1117  * be accessible from libceph (which is a user-space client) but the fd might
1118  * be for some file the kernel knows about.
1119  */
1120 static int cephwrap_linux_setlease(struct vfs_handle_struct *handle, files_struct *fsp,
1121                                 int leasetype)
1122 {
1123         int result = -1;
1124
1125         DBG_DEBUG("[CEPH] linux_setlease\n");
1126         errno = ENOSYS;
1127         return result;
1128 }
1129
1130 static int cephwrap_symlink(struct vfs_handle_struct *handle,
1131                 const char *link_target,
1132                 const struct smb_filename *new_smb_fname)
1133 {
1134         int result = -1;
1135         DBG_DEBUG("[CEPH] symlink(%p, %s, %s)\n", handle,
1136                         link_target,
1137                         new_smb_fname->base_name);
1138         result = ceph_symlink(handle->data,
1139                         link_target,
1140                         new_smb_fname->base_name);
1141         DBG_DEBUG("[CEPH] symlink(...) = %d\n", result);
1142         WRAP_RETURN(result);
1143 }
1144
1145 static int cephwrap_readlink(struct vfs_handle_struct *handle,
1146                 const struct smb_filename *smb_fname,
1147                 char *buf,
1148                 size_t bufsiz)
1149 {
1150         int result = -1;
1151         DBG_DEBUG("[CEPH] readlink(%p, %s, %p, %llu)\n", handle,
1152                         smb_fname->base_name, buf, llu(bufsiz));
1153         result = ceph_readlink(handle->data, smb_fname->base_name, buf, bufsiz);
1154         DBG_DEBUG("[CEPH] readlink(...) = %d\n", result);
1155         WRAP_RETURN(result);
1156 }
1157
1158 static int cephwrap_link(struct vfs_handle_struct *handle,
1159                 const struct smb_filename *old_smb_fname,
1160                 const struct smb_filename *new_smb_fname)
1161 {
1162         int result = -1;
1163         DBG_DEBUG("[CEPH] link(%p, %s, %s)\n", handle,
1164                         old_smb_fname->base_name,
1165                         new_smb_fname->base_name);
1166         result = ceph_link(handle->data,
1167                                 old_smb_fname->base_name,
1168                                 new_smb_fname->base_name);
1169         DBG_DEBUG("[CEPH] link(...) = %d\n", result);
1170         WRAP_RETURN(result);
1171 }
1172
1173 static int cephwrap_mknod(struct vfs_handle_struct *handle,
1174                 const struct smb_filename *smb_fname,
1175                 mode_t mode,
1176                 SMB_DEV_T dev)
1177 {
1178         int result = -1;
1179         DBG_DEBUG("[CEPH] mknod(%p, %s)\n", handle, smb_fname->base_name);
1180         result = ceph_mknod(handle->data, smb_fname->base_name, mode, dev);
1181         DBG_DEBUG("[CEPH] mknod(...) = %d\n", result);
1182         WRAP_RETURN(result);
1183 }
1184
1185 /*
1186  * This is a simple version of real-path ... a better version is needed to
1187  * ask libceph about symbolic links.
1188  */
1189 static char *cephwrap_realpath(struct vfs_handle_struct *handle,  const char *path)
1190 {
1191         char *result;
1192         size_t len = strlen(path);
1193
1194         result = SMB_MALLOC_ARRAY(char, PATH_MAX+1);
1195         if (len && (path[0] == '/')) {
1196                 int r = asprintf(&result, "%s", path);
1197                 if (r < 0) return NULL;
1198         } else if ((len >= 2) && (path[0] == '.') && (path[1] == '/')) {
1199                 if (len == 2) {
1200                         int r = asprintf(&result, "%s",
1201                                         handle->conn->connectpath);
1202                         if (r < 0) return NULL;
1203                 } else {
1204                         int r = asprintf(&result, "%s/%s",
1205                                         handle->conn->connectpath, &path[2]);
1206                         if (r < 0) return NULL;
1207                 }
1208         } else {
1209                 int r = asprintf(&result, "%s/%s",
1210                                 handle->conn->connectpath, path);
1211                 if (r < 0) return NULL;
1212         }
1213         DBG_DEBUG("[CEPH] realpath(%p, %s) = %s\n", handle, path, result);
1214         return result;
1215 }
1216
1217 static int cephwrap_chflags(struct vfs_handle_struct *handle,
1218                         const struct smb_filename *smb_fname,
1219                         unsigned int flags)
1220 {
1221         errno = ENOSYS;
1222         return -1;
1223 }
1224
1225 static int cephwrap_get_real_filename(struct vfs_handle_struct *handle,
1226                                      const char *path,
1227                                      const char *name,
1228                                      TALLOC_CTX *mem_ctx,
1229                                      char **found_name)
1230 {
1231         /*
1232          * Don't fall back to get_real_filename so callers can differentiate
1233          * between a full directory scan and an actual case-insensitive stat.
1234          */
1235         errno = EOPNOTSUPP;
1236         return -1;
1237 }
1238
1239 static const char *cephwrap_connectpath(struct vfs_handle_struct *handle,
1240                                        const char *fname)
1241 {
1242         return handle->conn->connectpath;
1243 }
1244
1245 /****************************************************************
1246  Extended attribute operations.
1247 *****************************************************************/
1248
1249 static ssize_t cephwrap_getxattr(struct vfs_handle_struct *handle,
1250                         const struct smb_filename *smb_fname,
1251                         const char *name,
1252                         void *value,
1253                         size_t size)
1254 {
1255         int ret;
1256         DBG_DEBUG("[CEPH] getxattr(%p, %s, %s, %p, %llu)\n", handle,
1257                         smb_fname->base_name, name, value, llu(size));
1258         ret = ceph_getxattr(handle->data,
1259                         smb_fname->base_name, name, value, size);
1260         DBG_DEBUG("[CEPH] getxattr(...) = %d\n", ret);
1261         if (ret < 0) {
1262                 WRAP_RETURN(ret);
1263         } else {
1264                 return (ssize_t)ret;
1265         }
1266 }
1267
1268 static ssize_t cephwrap_fgetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size)
1269 {
1270         int ret;
1271         DBG_DEBUG("[CEPH] fgetxattr(%p, %p, %s, %p, %llu)\n", handle, fsp, name, value, llu(size));
1272 #if LIBCEPHFS_VERSION_CODE >= LIBCEPHFS_VERSION(0, 94, 0)
1273         ret = ceph_fgetxattr(handle->data, fsp->fh->fd, name, value, size);
1274 #else
1275         ret = ceph_getxattr(handle->data, fsp->fsp_name->base_name, name, value, size);
1276 #endif
1277         DBG_DEBUG("[CEPH] fgetxattr(...) = %d\n", ret);
1278         if (ret < 0) {
1279                 WRAP_RETURN(ret);
1280         } else {
1281                 return (ssize_t)ret;
1282         }
1283 }
1284
1285 static ssize_t cephwrap_listxattr(struct vfs_handle_struct *handle,
1286                         const struct smb_filename *smb_fname,
1287                         char *list,
1288                         size_t size)
1289 {
1290         int ret;
1291         DBG_DEBUG("[CEPH] listxattr(%p, %s, %p, %llu)\n", handle,
1292                         smb_fname->base_name, list, llu(size));
1293         ret = ceph_listxattr(handle->data, smb_fname->base_name, list, size);
1294         DBG_DEBUG("[CEPH] listxattr(...) = %d\n", ret);
1295         if (ret < 0) {
1296                 WRAP_RETURN(ret);
1297         } else {
1298                 return (ssize_t)ret;
1299         }
1300 }
1301
1302 static ssize_t cephwrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size)
1303 {
1304         int ret;
1305         DBG_DEBUG("[CEPH] flistxattr(%p, %p, %s, %llu)\n", handle, fsp, list, llu(size));
1306 #if LIBCEPHFS_VERSION_CODE >= LIBCEPHFS_VERSION(0, 94, 0)
1307         ret = ceph_flistxattr(handle->data, fsp->fh->fd, list, size);
1308 #else
1309         ret = ceph_listxattr(handle->data, fsp->fsp_name->base_name, list, size);
1310 #endif
1311         DBG_DEBUG("[CEPH] flistxattr(...) = %d\n", ret);
1312         if (ret < 0) {
1313                 WRAP_RETURN(ret);
1314         } else {
1315                 return (ssize_t)ret;
1316         }
1317 }
1318
1319 static int cephwrap_removexattr(struct vfs_handle_struct *handle,
1320                                 const struct smb_filename *smb_fname,
1321                                 const char *name)
1322 {
1323         int ret;
1324         DBG_DEBUG("[CEPH] removexattr(%p, %s, %s)\n", handle,
1325                         smb_fname->base_name, name);
1326         ret = ceph_removexattr(handle->data, smb_fname->base_name, name);
1327         DBG_DEBUG("[CEPH] removexattr(...) = %d\n", ret);
1328         WRAP_RETURN(ret);
1329 }
1330
1331 static int cephwrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name)
1332 {
1333         int ret;
1334         DBG_DEBUG("[CEPH] fremovexattr(%p, %p, %s)\n", handle, fsp, name);
1335 #if LIBCEPHFS_VERSION_CODE >= LIBCEPHFS_VERSION(0, 94, 0)
1336         ret = ceph_fremovexattr(handle->data, fsp->fh->fd, name);
1337 #else
1338         ret = ceph_removexattr(handle->data, fsp->fsp_name->base_name, name);
1339 #endif
1340         DBG_DEBUG("[CEPH] fremovexattr(...) = %d\n", ret);
1341         WRAP_RETURN(ret);
1342 }
1343
1344 static int cephwrap_setxattr(struct vfs_handle_struct *handle,
1345                                 const struct smb_filename *smb_fname,
1346                                 const char *name,
1347                                 const void *value,
1348                                 size_t size,
1349                                 int flags)
1350 {
1351         int ret;
1352         DBG_DEBUG("[CEPH] setxattr(%p, %s, %s, %p, %llu, %d)\n", handle,
1353                         smb_fname->base_name, name, value, llu(size), flags);
1354         ret = ceph_setxattr(handle->data, smb_fname->base_name,
1355                         name, value, size, flags);
1356         DBG_DEBUG("[CEPH] setxattr(...) = %d\n", ret);
1357         WRAP_RETURN(ret);
1358 }
1359
1360 static int cephwrap_fsetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags)
1361 {
1362         int ret;
1363         DBG_DEBUG("[CEPH] fsetxattr(%p, %p, %s, %p, %llu, %d)\n", handle, fsp, name, value, llu(size), flags);
1364 #if LIBCEPHFS_VERSION_CODE >= LIBCEPHFS_VERSION(0, 94, 0)
1365         ret = ceph_fsetxattr(handle->data, fsp->fh->fd,
1366                              name, value, size, flags);
1367 #else
1368         ret = ceph_setxattr(handle->data, fsp->fsp_name->base_name, name, value, size, flags);
1369 #endif
1370         DBG_DEBUG("[CEPH] fsetxattr(...) = %d\n", ret);
1371         WRAP_RETURN(ret);
1372 }
1373
1374 static bool cephwrap_aio_force(struct vfs_handle_struct *handle, struct files_struct *fsp)
1375 {
1376
1377         /*
1378          * We do not support AIO yet.
1379          */
1380
1381         DBG_DEBUG("[CEPH] cephwrap_aio_force(%p, %p) = false (errno = ENOTSUP)\n", handle, fsp);
1382         errno = ENOTSUP;
1383         return false;
1384 }
1385
1386 static struct vfs_fn_pointers ceph_fns = {
1387         /* Disk operations */
1388
1389         .connect_fn = cephwrap_connect,
1390         .disconnect_fn = cephwrap_disconnect,
1391         .disk_free_fn = cephwrap_disk_free,
1392         .get_quota_fn = cephwrap_get_quota,
1393         .set_quota_fn = cephwrap_set_quota,
1394         .statvfs_fn = cephwrap_statvfs,
1395
1396         /* Directory operations */
1397
1398         .opendir_fn = cephwrap_opendir,
1399         .fdopendir_fn = cephwrap_fdopendir,
1400         .readdir_fn = cephwrap_readdir,
1401         .seekdir_fn = cephwrap_seekdir,
1402         .telldir_fn = cephwrap_telldir,
1403         .rewind_dir_fn = cephwrap_rewinddir,
1404         .mkdir_fn = cephwrap_mkdir,
1405         .rmdir_fn = cephwrap_rmdir,
1406         .closedir_fn = cephwrap_closedir,
1407
1408         /* File operations */
1409
1410         .open_fn = cephwrap_open,
1411         .close_fn = cephwrap_close,
1412         .read_fn = cephwrap_read,
1413         .pread_fn = cephwrap_pread,
1414         .write_fn = cephwrap_write,
1415         .pwrite_fn = cephwrap_pwrite,
1416         .lseek_fn = cephwrap_lseek,
1417         .sendfile_fn = cephwrap_sendfile,
1418         .recvfile_fn = cephwrap_recvfile,
1419         .rename_fn = cephwrap_rename,
1420         .fsync_fn = cephwrap_fsync,
1421         .stat_fn = cephwrap_stat,
1422         .fstat_fn = cephwrap_fstat,
1423         .lstat_fn = cephwrap_lstat,
1424         .unlink_fn = cephwrap_unlink,
1425         .chmod_fn = cephwrap_chmod,
1426         .fchmod_fn = cephwrap_fchmod,
1427         .chown_fn = cephwrap_chown,
1428         .fchown_fn = cephwrap_fchown,
1429         .lchown_fn = cephwrap_lchown,
1430         .chdir_fn = cephwrap_chdir,
1431         .getwd_fn = cephwrap_getwd,
1432         .ntimes_fn = cephwrap_ntimes,
1433         .ftruncate_fn = cephwrap_ftruncate,
1434         .lock_fn = cephwrap_lock,
1435         .kernel_flock_fn = cephwrap_kernel_flock,
1436         .linux_setlease_fn = cephwrap_linux_setlease,
1437         .getlock_fn = cephwrap_getlock,
1438         .symlink_fn = cephwrap_symlink,
1439         .readlink_fn = cephwrap_readlink,
1440         .link_fn = cephwrap_link,
1441         .mknod_fn = cephwrap_mknod,
1442         .realpath_fn = cephwrap_realpath,
1443         .chflags_fn = cephwrap_chflags,
1444         .get_real_filename_fn = cephwrap_get_real_filename,
1445         .connectpath_fn = cephwrap_connectpath,
1446
1447         /* EA operations. */
1448         .getxattr_fn = cephwrap_getxattr,
1449         .fgetxattr_fn = cephwrap_fgetxattr,
1450         .listxattr_fn = cephwrap_listxattr,
1451         .flistxattr_fn = cephwrap_flistxattr,
1452         .removexattr_fn = cephwrap_removexattr,
1453         .fremovexattr_fn = cephwrap_fremovexattr,
1454         .setxattr_fn = cephwrap_setxattr,
1455         .fsetxattr_fn = cephwrap_fsetxattr,
1456
1457         /* Posix ACL Operations */
1458         .sys_acl_get_file_fn = posixacl_xattr_acl_get_file,
1459         .sys_acl_get_fd_fn = posixacl_xattr_acl_get_fd,
1460         .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
1461         .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
1462         .sys_acl_set_file_fn = posixacl_xattr_acl_set_file,
1463         .sys_acl_set_fd_fn = posixacl_xattr_acl_set_fd,
1464         .sys_acl_delete_def_file_fn = posixacl_xattr_acl_delete_def_file,
1465
1466         /* aio operations */
1467         .aio_force_fn = cephwrap_aio_force,
1468 };
1469
1470 NTSTATUS vfs_ceph_init(TALLOC_CTX *);
1471 NTSTATUS vfs_ceph_init(TALLOC_CTX *ctx)
1472 {
1473         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1474                                 "ceph", &ceph_fns);
1475 }