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         result = ceph_chdir(handle->data, smb_fname->base_name);
 940         DBG_DEBUG("[CEPH] chdir(...) = %d\n", result);
 941         WRAP_RETURN(result);
 942 }
 943
 944 static struct smb_filename *cephwrap_getwd(struct vfs_handle_struct *handle,
 945                         TALLOC_CTX *ctx)
 946 {
 947         const char *cwd = ceph_getcwd(handle->data);
 948         DBG_DEBUG("[CEPH] getwd(%p) = %s\n", handle, cwd);
 949         return synthetic_smb_fname(ctx,
 950                                 cwd,
 951                                 NULL,
 952                                 NULL,
 953                                 0);
 954 }
 955
 956 static int strict_allocate_ftruncate(struct vfs_handle_struct *handle, files_struct *fsp, off_t len)
 957 {
 958         off_t space_to_write;
 959         uint64_t space_avail;
 960         uint64_t bsize,dfree,dsize;
 961         int ret;
 962         NTSTATUS status;
 963         SMB_STRUCT_STAT *pst;
 964
 965         status = vfs_stat_fsp(fsp);
 966         if (!NT_STATUS_IS_OK(status)) {
 967                 return -1;
 968         }
 969         pst = &fsp->fsp_name->st;
 970
 971 #ifdef S_ISFIFO
 972         if (S_ISFIFO(pst->st_ex_mode))
 973                 return 0;
 974 #endif
 975
 976         if (pst->st_ex_size == len)
 977                 return 0;
 978
 979         /* Shrink - just ftruncate. */
 980         if (pst->st_ex_size > len)
 981                 return ftruncate(fsp->fh->fd, len);
 982
 983         space_to_write = len - pst->st_ex_size;
 984
 985         /* for allocation try fallocate first. This can fail on some
 986            platforms e.g. when the filesystem doesn't support it and no
 987            emulation is being done by the libc (like on AIX with JFS1). In that
 988            case we do our own emulation. fallocate implementations can
 989            return ENOTSUP or EINVAL in cases like that. */
 990         ret = SMB_VFS_FALLOCATE(fsp, 0, pst->st_ex_size, space_to_write);
 991         if (ret == -1 && errno == ENOSPC) {
 992                 return -1;
 993         }
 994         if (ret == 0) {
 995                 return 0;
 996         }
 997         DEBUG(10,("[CEPH] strict_allocate_ftruncate: SMB_VFS_FALLOCATE failed with "
 998                 "error %d. Falling back to slow manual allocation\n", errno));
 999
1000         /* available disk space is enough or not? */
1001         space_avail =
1002             get_dfree_info(fsp->conn, fsp->fsp_name, &bsize, &dfree, &dsize);
1003         /* space_avail is 1k blocks */
1004         if (space_avail == (uint64_t)-1 ||
1005                         ((uint64_t)space_to_write/1024 > space_avail) ) {
1006                 errno = ENOSPC;
1007                 return -1;
1008         }
1009
1010         /* Write out the real space on disk. */
1011         return vfs_slow_fallocate(fsp, pst->st_ex_size, space_to_write);
1012 }
1013
1014 static int cephwrap_ftruncate(struct vfs_handle_struct *handle, files_struct *fsp, off_t len)
1015 {
1016         int result = -1;
1017         SMB_STRUCT_STAT st;
1018         char c = 0;
1019         off_t currpos;
1020
1021         DBG_DEBUG("[CEPH] ftruncate(%p, %p, %llu\n", handle, fsp, llu(len));
1022
1023         if (lp_strict_allocate(SNUM(fsp->conn))) {
1024                 result = strict_allocate_ftruncate(handle, fsp, len);
1025                 return result;
1026         }
1027
1028         /* we used to just check HAVE_FTRUNCATE_EXTEND and only use
1029            sys_ftruncate if the system supports it. Then I discovered that
1030            you can have some filesystems that support ftruncate
1031            expansion and some that don't! On Linux fat can't do
1032            ftruncate extend but ext2 can. */
1033
1034         result = ceph_ftruncate(handle->data, fsp->fh->fd, len);
1035         if (result == 0)
1036                 goto done;
1037
1038         /* According to W. R. Stevens advanced UNIX prog. Pure 4.3 BSD cannot
1039            extend a file with ftruncate. Provide alternate implementation
1040            for this */
1041         currpos = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
1042         if (currpos == -1) {
1043                 goto done;
1044         }
1045
1046         /* Do an fstat to see if the file is longer than the requested
1047            size in which case the ftruncate above should have
1048            succeeded or shorter, in which case seek to len - 1 and
1049            write 1 byte of zero */
1050         if (SMB_VFS_FSTAT(fsp, &st) == -1) {
1051                 goto done;
1052         }
1053
1054 #ifdef S_ISFIFO
1055         if (S_ISFIFO(st.st_ex_mode)) {
1056                 result = 0;
1057                 goto done;
1058         }
1059 #endif
1060
1061         if (st.st_ex_size == len) {
1062                 result = 0;
1063                 goto done;
1064         }
1065
1066         if (st.st_ex_size > len) {
1067                 /* the sys_ftruncate should have worked */
1068                 goto done;
1069         }
1070
1071         if (SMB_VFS_LSEEK(fsp, len-1, SEEK_SET) != len -1)
1072                 goto done;
1073
1074         if (SMB_VFS_WRITE(fsp, &c, 1)!=1)
1075                 goto done;
1076
1077         /* Seek to where we were */
1078         if (SMB_VFS_LSEEK(fsp, currpos, SEEK_SET) != currpos)
1079                 goto done;
1080         result = 0;
1081
1082   done:
1083
1084         return result;
1085 }
1086
1087 static bool cephwrap_lock(struct vfs_handle_struct *handle, files_struct *fsp, int op, off_t offset, off_t count, int type)
1088 {
1089         DBG_DEBUG("[CEPH] lock\n");
1090         return true;
1091 }
1092
1093 static int cephwrap_kernel_flock(struct vfs_handle_struct *handle, files_struct *fsp,
1094                                 uint32_t share_mode, uint32_t access_mask)
1095 {
1096         DBG_DEBUG("[CEPH] kernel_flock\n");
1097         /*
1098          * We must return zero here and pretend all is good.
1099          * One day we might have this in CEPH.
1100          */
1101         return 0;
1102 }
1103
1104 static bool cephwrap_getlock(struct vfs_handle_struct *handle, files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid)
1105 {
1106         DBG_DEBUG("[CEPH] getlock returning false and errno=0\n");
1107
1108         errno = 0;
1109         return false;
1110 }
1111
1112 /*
1113  * We cannot let this fall through to the default, because the file might only
1114  * be accessible from libceph (which is a user-space client) but the fd might
1115  * be for some file the kernel knows about.
1116  */
1117 static int cephwrap_linux_setlease(struct vfs_handle_struct *handle, files_struct *fsp,
1118                                 int leasetype)
1119 {
1120         int result = -1;
1121
1122         DBG_DEBUG("[CEPH] linux_setlease\n");
1123         errno = ENOSYS;
1124         return result;
1125 }
1126
1127 static int cephwrap_symlink(struct vfs_handle_struct *handle,
1128                 const char *link_target,
1129                 const struct smb_filename *new_smb_fname)
1130 {
1131         int result = -1;
1132         DBG_DEBUG("[CEPH] symlink(%p, %s, %s)\n", handle,
1133                         link_target,
1134                         new_smb_fname->base_name);
1135         result = ceph_symlink(handle->data,
1136                         link_target,
1137                         new_smb_fname->base_name);
1138         DBG_DEBUG("[CEPH] symlink(...) = %d\n", result);
1139         WRAP_RETURN(result);
1140 }
1141
1142 static int cephwrap_readlink(struct vfs_handle_struct *handle,
1143                 const struct smb_filename *smb_fname,
1144                 char *buf,
1145                 size_t bufsiz)
1146 {
1147         int result = -1;
1148         DBG_DEBUG("[CEPH] readlink(%p, %s, %p, %llu)\n", handle,
1149                         smb_fname->base_name, buf, llu(bufsiz));
1150         result = ceph_readlink(handle->data, smb_fname->base_name, buf, bufsiz);
1151         DBG_DEBUG("[CEPH] readlink(...) = %d\n", result);
1152         WRAP_RETURN(result);
1153 }
1154
1155 static int cephwrap_link(struct vfs_handle_struct *handle,
1156                 const struct smb_filename *old_smb_fname,
1157                 const struct smb_filename *new_smb_fname)
1158 {
1159         int result = -1;
1160         DBG_DEBUG("[CEPH] link(%p, %s, %s)\n", handle,
1161                         old_smb_fname->base_name,
1162                         new_smb_fname->base_name);
1163         result = ceph_link(handle->data,
1164                                 old_smb_fname->base_name,
1165                                 new_smb_fname->base_name);
1166         DBG_DEBUG("[CEPH] link(...) = %d\n", result);
1167         WRAP_RETURN(result);
1168 }
1169
1170 static int cephwrap_mknod(struct vfs_handle_struct *handle,
1171                 const struct smb_filename *smb_fname,
1172                 mode_t mode,
1173                 SMB_DEV_T dev)
1174 {
1175         int result = -1;
1176         DBG_DEBUG("[CEPH] mknod(%p, %s)\n", handle, smb_fname->base_name);
1177         result = ceph_mknod(handle->data, smb_fname->base_name, mode, dev);
1178         DBG_DEBUG("[CEPH] mknod(...) = %d\n", result);
1179         WRAP_RETURN(result);
1180 }
1181
1182 /*
1183  * This is a simple version of real-path ... a better version is needed to
1184  * ask libceph about symbolic links.
1185  */
1186 static struct smb_filename *cephwrap_realpath(struct vfs_handle_struct *handle,
1187                                 TALLOC_CTX *ctx,
1188                                 const struct smb_filename *smb_fname)
1189 {
1190         char *result;
1191         const char *path = smb_fname->base_name;
1192         size_t len = strlen(path);
1193         struct smb_filename *result_fname = NULL;
1194
1195         result = SMB_MALLOC_ARRAY(char, PATH_MAX+1);
1196         if (len && (path[0] == '/')) {
1197                 int r = asprintf(&result, "%s", path);
1198                 if (r < 0) return NULL;
1199         } else if ((len >= 2) && (path[0] == '.') && (path[1] == '/')) {
1200                 if (len == 2) {
1201                         int r = asprintf(&result, "%s",
1202                                         handle->conn->connectpath);
1203                         if (r < 0) return NULL;
1204                 } else {
1205                         int r = asprintf(&result, "%s/%s",
1206                                         handle->conn->connectpath, &path[2]);
1207                         if (r < 0) return NULL;
1208                 }
1209         } else {
1210                 int r = asprintf(&result, "%s/%s",
1211                                 handle->conn->connectpath, path);
1212                 if (r < 0) return NULL;
1213         }
1214         DBG_DEBUG("[CEPH] realpath(%p, %s) = %s\n", handle, path, result);
1215         result_fname = synthetic_smb_fname(ctx,
1216                                 result,
1217                                 NULL,
1218                                 NULL,
1219                                 0);
1220         SAFE_FREE(result);
1221         return result_fname;
1222 }
1223
1224 static int cephwrap_chflags(struct vfs_handle_struct *handle,
1225                         const struct smb_filename *smb_fname,
1226                         unsigned int flags)
1227 {
1228         errno = ENOSYS;
1229         return -1;
1230 }
1231
1232 static int cephwrap_get_real_filename(struct vfs_handle_struct *handle,
1233                                      const char *path,
1234                                      const char *name,
1235                                      TALLOC_CTX *mem_ctx,
1236                                      char **found_name)
1237 {
1238         /*
1239          * Don't fall back to get_real_filename so callers can differentiate
1240          * between a full directory scan and an actual case-insensitive stat.
1241          */
1242         errno = EOPNOTSUPP;
1243         return -1;
1244 }
1245
1246 static const char *cephwrap_connectpath(struct vfs_handle_struct *handle,
1247                                        const struct smb_filename *smb_fname)
1248 {
1249         return handle->conn->connectpath;
1250 }
1251
1252 /****************************************************************
1253  Extended attribute operations.
1254 *****************************************************************/
1255
1256 static ssize_t cephwrap_getxattr(struct vfs_handle_struct *handle,
1257                         const struct smb_filename *smb_fname,
1258                         const char *name,
1259                         void *value,
1260                         size_t size)
1261 {
1262         int ret;
1263         DBG_DEBUG("[CEPH] getxattr(%p, %s, %s, %p, %llu)\n", handle,
1264                         smb_fname->base_name, name, value, llu(size));
1265         ret = ceph_getxattr(handle->data,
1266                         smb_fname->base_name, name, value, size);
1267         DBG_DEBUG("[CEPH] getxattr(...) = %d\n", ret);
1268         if (ret < 0) {
1269                 WRAP_RETURN(ret);
1270         } else {
1271                 return (ssize_t)ret;
1272         }
1273 }
1274
1275 static ssize_t cephwrap_fgetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size)
1276 {
1277         int ret;
1278         DBG_DEBUG("[CEPH] fgetxattr(%p, %p, %s, %p, %llu)\n", handle, fsp, name, value, llu(size));
1279 #if LIBCEPHFS_VERSION_CODE >= LIBCEPHFS_VERSION(0, 94, 0)
1280         ret = ceph_fgetxattr(handle->data, fsp->fh->fd, name, value, size);
1281 #else
1282         ret = ceph_getxattr(handle->data, fsp->fsp_name->base_name, name, value, size);
1283 #endif
1284         DBG_DEBUG("[CEPH] fgetxattr(...) = %d\n", ret);
1285         if (ret < 0) {
1286                 WRAP_RETURN(ret);
1287         } else {
1288                 return (ssize_t)ret;
1289         }
1290 }
1291
1292 static ssize_t cephwrap_listxattr(struct vfs_handle_struct *handle,
1293                         const struct smb_filename *smb_fname,
1294                         char *list,
1295                         size_t size)
1296 {
1297         int ret;
1298         DBG_DEBUG("[CEPH] listxattr(%p, %s, %p, %llu)\n", handle,
1299                         smb_fname->base_name, list, llu(size));
1300         ret = ceph_listxattr(handle->data, smb_fname->base_name, list, size);
1301         DBG_DEBUG("[CEPH] listxattr(...) = %d\n", ret);
1302         if (ret < 0) {
1303                 WRAP_RETURN(ret);
1304         } else {
1305                 return (ssize_t)ret;
1306         }
1307 }
1308
1309 static ssize_t cephwrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size)
1310 {
1311         int ret;
1312         DBG_DEBUG("[CEPH] flistxattr(%p, %p, %s, %llu)\n", handle, fsp, list, llu(size));
1313 #if LIBCEPHFS_VERSION_CODE >= LIBCEPHFS_VERSION(0, 94, 0)
1314         ret = ceph_flistxattr(handle->data, fsp->fh->fd, list, size);
1315 #else
1316         ret = ceph_listxattr(handle->data, fsp->fsp_name->base_name, list, size);
1317 #endif
1318         DBG_DEBUG("[CEPH] flistxattr(...) = %d\n", ret);
1319         if (ret < 0) {
1320                 WRAP_RETURN(ret);
1321         } else {
1322                 return (ssize_t)ret;
1323         }
1324 }
1325
1326 static int cephwrap_removexattr(struct vfs_handle_struct *handle,
1327                                 const struct smb_filename *smb_fname,
1328                                 const char *name)
1329 {
1330         int ret;
1331         DBG_DEBUG("[CEPH] removexattr(%p, %s, %s)\n", handle,
1332                         smb_fname->base_name, name);
1333         ret = ceph_removexattr(handle->data, smb_fname->base_name, name);
1334         DBG_DEBUG("[CEPH] removexattr(...) = %d\n", ret);
1335         WRAP_RETURN(ret);
1336 }
1337
1338 static int cephwrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name)
1339 {
1340         int ret;
1341         DBG_DEBUG("[CEPH] fremovexattr(%p, %p, %s)\n", handle, fsp, name);
1342 #if LIBCEPHFS_VERSION_CODE >= LIBCEPHFS_VERSION(0, 94, 0)
1343         ret = ceph_fremovexattr(handle->data, fsp->fh->fd, name);
1344 #else
1345         ret = ceph_removexattr(handle->data, fsp->fsp_name->base_name, name);
1346 #endif
1347         DBG_DEBUG("[CEPH] fremovexattr(...) = %d\n", ret);
1348         WRAP_RETURN(ret);
1349 }
1350
1351 static int cephwrap_setxattr(struct vfs_handle_struct *handle,
1352                                 const struct smb_filename *smb_fname,
1353                                 const char *name,
1354                                 const void *value,
1355                                 size_t size,
1356                                 int flags)
1357 {
1358         int ret;
1359         DBG_DEBUG("[CEPH] setxattr(%p, %s, %s, %p, %llu, %d)\n", handle,
1360                         smb_fname->base_name, name, value, llu(size), flags);
1361         ret = ceph_setxattr(handle->data, smb_fname->base_name,
1362                         name, value, size, flags);
1363         DBG_DEBUG("[CEPH] setxattr(...) = %d\n", ret);
1364         WRAP_RETURN(ret);
1365 }
1366
1367 static int cephwrap_fsetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags)
1368 {
1369         int ret;
1370         DBG_DEBUG("[CEPH] fsetxattr(%p, %p, %s, %p, %llu, %d)\n", handle, fsp, name, value, llu(size), flags);
1371 #if LIBCEPHFS_VERSION_CODE >= LIBCEPHFS_VERSION(0, 94, 0)
1372         ret = ceph_fsetxattr(handle->data, fsp->fh->fd,
1373                              name, value, size, flags);
1374 #else
1375         ret = ceph_setxattr(handle->data, fsp->fsp_name->base_name, name, value, size, flags);
1376 #endif
1377         DBG_DEBUG("[CEPH] fsetxattr(...) = %d\n", ret);
1378         WRAP_RETURN(ret);
1379 }
1380
1381 static bool cephwrap_aio_force(struct vfs_handle_struct *handle, struct files_struct *fsp)
1382 {
1383
1384         /*
1385          * We do not support AIO yet.
1386          */
1387
1388         DBG_DEBUG("[CEPH] cephwrap_aio_force(%p, %p) = false (errno = ENOTSUP)\n", handle, fsp);
1389         errno = ENOTSUP;
1390         return false;
1391 }
1392
1393 static struct vfs_fn_pointers ceph_fns = {
1394         /* Disk operations */
1395
1396         .connect_fn = cephwrap_connect,
1397         .disconnect_fn = cephwrap_disconnect,
1398         .disk_free_fn = cephwrap_disk_free,
1399         .get_quota_fn = cephwrap_get_quota,
1400         .set_quota_fn = cephwrap_set_quota,
1401         .statvfs_fn = cephwrap_statvfs,
1402
1403         /* Directory operations */
1404
1405         .opendir_fn = cephwrap_opendir,
1406         .fdopendir_fn = cephwrap_fdopendir,
1407         .readdir_fn = cephwrap_readdir,
1408         .seekdir_fn = cephwrap_seekdir,
1409         .telldir_fn = cephwrap_telldir,
1410         .rewind_dir_fn = cephwrap_rewinddir,
1411         .mkdir_fn = cephwrap_mkdir,
1412         .rmdir_fn = cephwrap_rmdir,
1413         .closedir_fn = cephwrap_closedir,
1414
1415         /* File operations */
1416
1417         .open_fn = cephwrap_open,
1418         .close_fn = cephwrap_close,
1419         .read_fn = cephwrap_read,
1420         .pread_fn = cephwrap_pread,
1421         .write_fn = cephwrap_write,
1422         .pwrite_fn = cephwrap_pwrite,
1423         .lseek_fn = cephwrap_lseek,
1424         .sendfile_fn = cephwrap_sendfile,
1425         .recvfile_fn = cephwrap_recvfile,
1426         .rename_fn = cephwrap_rename,
1427         .fsync_fn = cephwrap_fsync,
1428         .stat_fn = cephwrap_stat,
1429         .fstat_fn = cephwrap_fstat,
1430         .lstat_fn = cephwrap_lstat,
1431         .unlink_fn = cephwrap_unlink,
1432         .chmod_fn = cephwrap_chmod,
1433         .fchmod_fn = cephwrap_fchmod,
1434         .chown_fn = cephwrap_chown,
1435         .fchown_fn = cephwrap_fchown,
1436         .lchown_fn = cephwrap_lchown,
1437         .chdir_fn = cephwrap_chdir,
1438         .getwd_fn = cephwrap_getwd,
1439         .ntimes_fn = cephwrap_ntimes,
1440         .ftruncate_fn = cephwrap_ftruncate,
1441         .lock_fn = cephwrap_lock,
1442         .kernel_flock_fn = cephwrap_kernel_flock,
1443         .linux_setlease_fn = cephwrap_linux_setlease,
1444         .getlock_fn = cephwrap_getlock,
1445         .symlink_fn = cephwrap_symlink,
1446         .readlink_fn = cephwrap_readlink,
1447         .link_fn = cephwrap_link,
1448         .mknod_fn = cephwrap_mknod,
1449         .realpath_fn = cephwrap_realpath,
1450         .chflags_fn = cephwrap_chflags,
1451         .get_real_filename_fn = cephwrap_get_real_filename,
1452         .connectpath_fn = cephwrap_connectpath,
1453
1454         /* EA operations. */
1455         .getxattr_fn = cephwrap_getxattr,
1456         .fgetxattr_fn = cephwrap_fgetxattr,
1457         .listxattr_fn = cephwrap_listxattr,
1458         .flistxattr_fn = cephwrap_flistxattr,
1459         .removexattr_fn = cephwrap_removexattr,
1460         .fremovexattr_fn = cephwrap_fremovexattr,
1461         .setxattr_fn = cephwrap_setxattr,
1462         .fsetxattr_fn = cephwrap_fsetxattr,
1463
1464         /* Posix ACL Operations */
1465         .sys_acl_get_file_fn = posixacl_xattr_acl_get_file,
1466         .sys_acl_get_fd_fn = posixacl_xattr_acl_get_fd,
1467         .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
1468         .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
1469         .sys_acl_set_file_fn = posixacl_xattr_acl_set_file,
1470         .sys_acl_set_fd_fn = posixacl_xattr_acl_set_fd,
1471         .sys_acl_delete_def_file_fn = posixacl_xattr_acl_delete_def_file,
1472
1473         /* aio operations */
1474         .aio_force_fn = cephwrap_aio_force,
1475 };
1476
1477 NTSTATUS vfs_ceph_init(TALLOC_CTX *);
1478 NTSTATUS vfs_ceph_init(TALLOC_CTX *ctx)
1479 {
1480         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1481                                 "ceph", &ceph_fns);
1482 }