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>
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.
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.
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/>.
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.
27 * Add the following smb.conf parameter to each share that will be hosted on
30 * vfs objects = ceph [any others you need go here]
34 #include "smbd/smbd.h"
36 #include <sys/statvfs.h>
37 #include "cephfs/libcephfs.h"
38 #include "smbprofile.h"
39 #include "modules/posixacl_xattr.h"
42 #define DBGC_CLASS DBGC_VFS
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)
50 * Use %llu whenever we have a 64bit unsigned int, and cast to (long long unsigned)
52 #define llu(_var) ((long long unsigned)_var)
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
58 #define WRAP_RETURN(_res) \
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
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
75 static struct ceph_mount_info * cmount = NULL;
76 static uint32_t cmount_cnt = 0;
78 /* Check for NULL pointer parameters in cephwrap_* functions */
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
84 static int cephwrap_connect(struct vfs_handle_struct *handle, const char *service, const char *user)
89 const char * conf_file;
92 handle->data = cmount; /* We have been here before */
97 conf_file = lp_parm_const_string(SNUM(handle->conn), "ceph", "config_file", NULL);
99 DEBUG(2, ( "[CEPH] calling: ceph_create\n" ));
100 ret = ceph_create(&cmount, NULL);
105 /* Override the config file */
106 DEBUG(2, ( "[CEPH] calling: ceph_conf_read_file\n" ));
107 ret = ceph_conf_read_file(cmount, conf_file);
110 DEBUG(2, ( "[CEPH] calling: ceph_conf_read_file with %s\n", conf_file));
111 ret = ceph_conf_read_file(cmount, NULL);
117 DEBUG(2, ( "[CEPH] calling: ceph_conf_get\n" ));
118 ret = ceph_conf_get(cmount, "log file", buf, sizeof(buf));
122 DEBUG(2, ("[CEPH] calling: ceph_mount\n"));
123 ret = ceph_mount(cmount, NULL);
129 * encode mount context/state into our vfs/connection holding structure
130 * cmount is a ceph_mount_t*
132 handle->data = cmount;
139 * Handle the error correctly. Ceph returns -errno.
141 DEBUG(2, ("[CEPH] Error return: %s\n", strerror(-ret)));
145 static void cephwrap_disconnect(struct vfs_handle_struct *handle)
148 DEBUG(0, ("[CEPH] Error, ceph not mounted\n"));
152 /* Should we unmount/shutdown? Only if the last disconnect? */
154 DEBUG(10, ("[CEPH] Not shuting down CEPH because still more connections\n"));
158 ceph_shutdown(cmount);
160 cmount = NULL; /* Make it safe */
163 /* Disk operations */
165 static uint64_t cephwrap_disk_free(struct vfs_handle_struct *handle,
166 const char *path, uint64_t *bsize,
167 uint64_t *dfree, uint64_t *dsize)
169 struct statvfs statvfs_buf;
172 if (!(ret = ceph_statfs(handle->data, path, &statvfs_buf))) {
174 * Provide all the correct values.
176 *bsize = statvfs_buf.f_bsize;
177 *dfree = statvfs_buf.f_bavail;
178 *dsize = statvfs_buf.f_blocks;
179 DEBUG(10, ("[CEPH] bsize: %llu, dfree: %llu, dsize: %llu\n",
180 llu(*bsize), llu(*dfree), llu(*dsize)));
183 DEBUG(10, ("[CEPH] ceph_statfs returned %d\n", ret));
188 static int cephwrap_get_quota(struct vfs_handle_struct *handle,
189 const char *path, enum SMB_QUOTA_TYPE qtype,
190 unid_t id, SMB_DISK_QUOTA *qt)
192 /* libceph: Ceph does not implement this */
194 /* was ifdef HAVE_SYS_QUOTAS */
197 ret = ceph_get_quota(handle->conn->connectpath, qtype, id, qt);
211 static int cephwrap_set_quota(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
213 /* libceph: Ceph does not implement this */
215 /* was ifdef HAVE_SYS_QUOTAS */
218 ret = ceph_set_quota(handle->conn->connectpath, qtype, id, qt);
226 WRAP_RETURN(-ENOSYS);
230 static int cephwrap_statvfs(struct vfs_handle_struct *handle, const char *path, vfs_statvfs_struct *statbuf)
232 struct statvfs statvfs_buf;
235 ret = ceph_statfs(handle->data, path, &statvfs_buf);
239 statbuf->OptimalTransferSize = statvfs_buf.f_frsize;
240 statbuf->BlockSize = statvfs_buf.f_bsize;
241 statbuf->TotalBlocks = statvfs_buf.f_blocks;
242 statbuf->BlocksAvail = statvfs_buf.f_bfree;
243 statbuf->UserBlocksAvail = statvfs_buf.f_bavail;
244 statbuf->TotalFileNodes = statvfs_buf.f_files;
245 statbuf->FreeFileNodes = statvfs_buf.f_ffree;
246 statbuf->FsIdentifier = statvfs_buf.f_fsid;
247 DEBUG(10, ("[CEPH] f_bsize: %ld, f_blocks: %ld, f_bfree: %ld, f_bavail: %ld\n",
248 (long int)statvfs_buf.f_bsize, (long int)statvfs_buf.f_blocks,
249 (long int)statvfs_buf.f_bfree, (long int)statvfs_buf.f_bavail));
254 /* Directory operations */
256 static DIR *cephwrap_opendir(struct vfs_handle_struct *handle,
257 const struct smb_filename *smb_fname,
258 const char *mask, uint32_t attr)
261 struct ceph_dir_result *result;
262 DEBUG(10, ("[CEPH] opendir(%p, %s)\n", handle, smb_fname->base_name));
264 /* Returns NULL if it does not exist or there are problems ? */
265 ret = ceph_opendir(handle->data, smb_fname->base_name, &result);
268 errno = -ret; /* We return result which is NULL in this case */
271 DEBUG(10, ("[CEPH] opendir(...) = %d\n", ret));
272 return (DIR *) result;
275 static DIR *cephwrap_fdopendir(struct vfs_handle_struct *handle,
276 struct files_struct *fsp,
281 struct ceph_dir_result *result;
282 DEBUG(10, ("[CEPH] fdopendir(%p, %p)\n", handle, fsp));
284 ret = ceph_opendir(handle->data, fsp->fsp_name->base_name, &result);
287 errno = -ret; /* We return result which is NULL in this case */
290 DEBUG(10, ("[CEPH] fdopendir(...) = %d\n", ret));
291 return (DIR *) result;
294 static struct dirent *cephwrap_readdir(struct vfs_handle_struct *handle,
296 SMB_STRUCT_STAT *sbuf)
298 struct dirent *result;
300 DEBUG(10, ("[CEPH] readdir(%p, %p)\n", handle, dirp));
301 result = ceph_readdir(handle->data, (struct ceph_dir_result *) dirp);
302 DEBUG(10, ("[CEPH] readdir(...) = %p\n", result));
304 /* Default Posix readdir() does not give us stat info.
305 * Set to invalid to indicate we didn't return this info. */
307 SET_STAT_INVALID(*sbuf);
311 static void cephwrap_seekdir(struct vfs_handle_struct *handle, DIR *dirp, long offset)
313 DEBUG(10, ("[CEPH] seekdir(%p, %p, %ld)\n", handle, dirp, offset));
314 ceph_seekdir(handle->data, (struct ceph_dir_result *) dirp, offset);
317 static long cephwrap_telldir(struct vfs_handle_struct *handle, DIR *dirp)
320 DEBUG(10, ("[CEPH] telldir(%p, %p)\n", handle, dirp));
321 ret = ceph_telldir(handle->data, (struct ceph_dir_result *) dirp);
322 DEBUG(10, ("[CEPH] telldir(...) = %ld\n", ret));
326 static void cephwrap_rewinddir(struct vfs_handle_struct *handle, DIR *dirp)
328 DEBUG(10, ("[CEPH] rewinddir(%p, %p)\n", handle, dirp));
329 ceph_rewinddir(handle->data, (struct ceph_dir_result *) dirp);
332 static int cephwrap_mkdir(struct vfs_handle_struct *handle,
333 const struct smb_filename *smb_fname,
337 bool has_dacl = False;
339 const char *path = smb_fname->base_name;
341 DEBUG(10, ("[CEPH] mkdir(%p, %s)\n", handle, path));
343 if (lp_inherit_acls(SNUM(handle->conn))
344 && parent_dirname(talloc_tos(), path, &parent, NULL)
345 && (has_dacl = directory_has_default_acl(handle->conn, parent)))
350 result = ceph_mkdir(handle->data, path, mode);
353 * Note. This order is important
357 } else if (result == 0 && !has_dacl) {
359 * We need to do this as the default behavior of POSIX ACLs
360 * is to set the mask to be the requested group permission
361 * bits, not the group permission bits to be the requested
362 * group permission bits. This is not what we want, as it will
363 * mess up any inherited ACL bits that were set. JRA.
365 int saved_errno = errno; /* We may get ENOSYS */
366 if ((SMB_VFS_CHMOD_ACL(handle->conn, smb_fname, mode) == -1) &&
375 static int cephwrap_rmdir(struct vfs_handle_struct *handle,
376 const struct smb_filename *smb_fname)
380 DEBUG(10, ("[CEPH] rmdir(%p, %s)\n", handle, smb_fname->base_name));
381 result = ceph_rmdir(handle->data, smb_fname->base_name);
382 DEBUG(10, ("[CEPH] rmdir(...) = %d\n", result));
386 static int cephwrap_closedir(struct vfs_handle_struct *handle, DIR *dirp)
390 DEBUG(10, ("[CEPH] closedir(%p, %p)\n", handle, dirp));
391 result = ceph_closedir(handle->data, (struct ceph_dir_result *) dirp);
392 DEBUG(10, ("[CEPH] closedir(...) = %d\n", result));
396 /* File operations */
398 static int cephwrap_open(struct vfs_handle_struct *handle,
399 struct smb_filename *smb_fname,
400 files_struct *fsp, int flags, mode_t mode)
402 int result = -ENOENT;
403 DEBUG(10, ("[CEPH] open(%p, %s, %p, %d, %d)\n", handle, smb_fname_str_dbg(smb_fname), fsp, flags, mode));
405 if (smb_fname->stream_name) {
409 result = ceph_open(handle->data, smb_fname->base_name, flags, mode);
411 DEBUG(10, ("[CEPH] open(...) = %d\n", result));
415 static int cephwrap_close(struct vfs_handle_struct *handle, files_struct *fsp)
419 DEBUG(10, ("[CEPH] close(%p, %p)\n", handle, fsp));
420 result = ceph_close(handle->data, fsp->fh->fd);
421 DEBUG(10, ("[CEPH] close(...) = %d\n", result));
426 static ssize_t cephwrap_read(struct vfs_handle_struct *handle, files_struct *fsp, void *data, size_t n)
430 DEBUG(10, ("[CEPH] read(%p, %p, %p, %llu)\n", handle, fsp, data, llu(n)));
432 /* Using -1 for the offset means read/write rather than pread/pwrite */
433 result = ceph_read(handle->data, fsp->fh->fd, data, n, -1);
434 DEBUG(10, ("[CEPH] read(...) = %llu\n", llu(result)));
438 static ssize_t cephwrap_pread(struct vfs_handle_struct *handle, files_struct *fsp, void *data,
439 size_t n, off_t offset)
443 DEBUG(10, ("[CEPH] pread(%p, %p, %p, %llu, %llu)\n", handle, fsp, data, llu(n), llu(offset)));
445 result = ceph_read(handle->data, fsp->fh->fd, data, n, offset);
446 DEBUG(10, ("[CEPH] pread(...) = %llu\n", llu(result)));
451 static ssize_t cephwrap_write(struct vfs_handle_struct *handle, files_struct *fsp, const void *data, size_t n)
455 DEBUG(10, ("[CEPH] write(%p, %p, %p, %llu)\n", handle, fsp, data, llu(n)));
457 result = ceph_write(handle->data, fsp->fh->fd, data, n, -1);
459 DEBUG(10, ("[CEPH] write(...) = %llu\n", llu(result)));
463 fsp->fh->pos += result;
467 static ssize_t cephwrap_pwrite(struct vfs_handle_struct *handle, files_struct *fsp, const void *data,
468 size_t n, off_t offset)
472 DEBUG(10, ("[CEPH] pwrite(%p, %p, %p, %llu, %llu)\n", handle, fsp, data, llu(n), llu(offset)));
473 result = ceph_write(handle->data, fsp->fh->fd, data, n, offset);
474 DEBUG(10, ("[CEPH] pwrite(...) = %llu\n", llu(result)));
478 static off_t cephwrap_lseek(struct vfs_handle_struct *handle, files_struct *fsp, off_t offset, int whence)
482 DEBUG(10, ("[CEPH] cephwrap_lseek\n"));
483 /* Cope with 'stat' file opens. */
484 if (fsp->fh->fd != -1) {
485 result = ceph_lseek(handle->data, fsp->fh->fd, offset, whence);
490 static ssize_t cephwrap_sendfile(struct vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *hdr,
491 off_t offset, size_t n)
494 * We cannot support sendfile because libceph is in user space.
496 DEBUG(10, ("[CEPH] cephwrap_sendfile\n"));
501 static ssize_t cephwrap_recvfile(struct vfs_handle_struct *handle,
508 * We cannot support recvfile because libceph is in user space.
510 DEBUG(10, ("[CEPH] cephwrap_recvfile\n"));
515 static int cephwrap_rename(struct vfs_handle_struct *handle,
516 const struct smb_filename *smb_fname_src,
517 const struct smb_filename *smb_fname_dst)
520 DEBUG(10, ("[CEPH] cephwrap_rename\n"));
521 if (smb_fname_src->stream_name || smb_fname_dst->stream_name) {
526 result = ceph_rename(handle->data, smb_fname_src->base_name, smb_fname_dst->base_name);
530 static int cephwrap_fsync(struct vfs_handle_struct *handle, files_struct *fsp)
533 DEBUG(10, ("[CEPH] cephwrap_fsync\n"));
534 result = ceph_fsync(handle->data, fsp->fh->fd, false);
538 static int cephwrap_stat(struct vfs_handle_struct *handle,
539 struct smb_filename *smb_fname)
544 DEBUG(10, ("[CEPH] stat(%p, %s)\n", handle, smb_fname_str_dbg(smb_fname)));
546 if (smb_fname->stream_name) {
551 result = ceph_stat(handle->data, smb_fname->base_name, (struct stat *) &stbuf);
552 DEBUG(10, ("[CEPH] stat(...) = %d\n", result));
556 DEBUG(10, ("[CEPH]\tstbuf = {dev = %llu, ino = %llu, mode = 0x%x, nlink = %llu, "
557 "uid = %d, gid = %d, rdev = %llu, size = %llu, blksize = %llu, "
558 "blocks = %llu, atime = %llu, mtime = %llu, ctime = %llu}\n",
559 llu(stbuf.st_dev), llu(stbuf.st_ino), stbuf.st_mode, llu(stbuf.st_nlink),
560 stbuf.st_uid, stbuf.st_gid, llu(stbuf.st_rdev), llu(stbuf.st_size), llu(stbuf.st_blksize),
561 llu(stbuf.st_blocks), llu(stbuf.st_atime), llu(stbuf.st_mtime), llu(stbuf.st_ctime)));
563 init_stat_ex_from_stat(
564 &smb_fname->st, &stbuf,
565 lp_fake_directory_create_times(SNUM(handle->conn)));
566 DEBUG(10, ("[CEPH] mode = 0x%x\n", smb_fname->st.st_ex_mode));
570 static int cephwrap_fstat(struct vfs_handle_struct *handle, files_struct *fsp, SMB_STRUCT_STAT *sbuf)
575 DEBUG(10, ("[CEPH] fstat(%p, %d)\n", handle, fsp->fh->fd));
576 result = ceph_fstat(handle->data, fsp->fh->fd, (struct stat *) &stbuf);
577 DEBUG(10, ("[CEPH] fstat(...) = %d\n", result));
581 DEBUG(10, ("[CEPH]\tstbuf = {dev = %llu, ino = %llu, mode = 0x%x, nlink = %llu, "
582 "uid = %d, gid = %d, rdev = %llu, size = %llu, blksize = %llu, "
583 "blocks = %llu, atime = %llu, mtime = %llu, ctime = %llu}\n",
584 llu(stbuf.st_dev), llu(stbuf.st_ino), stbuf.st_mode, llu(stbuf.st_nlink),
585 stbuf.st_uid, stbuf.st_gid, llu(stbuf.st_rdev), llu(stbuf.st_size), llu(stbuf.st_blksize),
586 llu(stbuf.st_blocks), llu(stbuf.st_atime), llu(stbuf.st_mtime), llu(stbuf.st_ctime)));
589 init_stat_ex_from_stat(
591 lp_fake_directory_create_times(SNUM(handle->conn)));
592 DEBUG(10, ("[CEPH] mode = 0x%x\n", sbuf->st_ex_mode));
596 static int cephwrap_lstat(struct vfs_handle_struct *handle,
597 struct smb_filename *smb_fname)
602 DEBUG(10, ("[CEPH] lstat(%p, %s)\n", handle, smb_fname_str_dbg(smb_fname)));
604 if (smb_fname->stream_name) {
609 result = ceph_lstat(handle->data, smb_fname->base_name, &stbuf);
610 DEBUG(10, ("[CEPH] lstat(...) = %d\n", result));
614 init_stat_ex_from_stat(
615 &smb_fname->st, &stbuf,
616 lp_fake_directory_create_times(SNUM(handle->conn)));
620 static int cephwrap_unlink(struct vfs_handle_struct *handle,
621 const struct smb_filename *smb_fname)
625 DEBUG(10, ("[CEPH] unlink(%p, %s)\n", handle, smb_fname_str_dbg(smb_fname)));
626 if (smb_fname->stream_name) {
630 result = ceph_unlink(handle->data, smb_fname->base_name);
631 DEBUG(10, ("[CEPH] unlink(...) = %d\n", result));
635 static int cephwrap_chmod(struct vfs_handle_struct *handle,
636 const struct smb_filename *smb_fname,
641 DEBUG(10, ("[CEPH] chmod(%p, %s, %d)\n",
643 smb_fname->base_name,
647 * We need to do this due to the fact that the default POSIX ACL
648 * chmod modifies the ACL *mask* for the group owner, not the
649 * group owner bits directly. JRA.
654 int saved_errno = errno; /* We might get ENOSYS */
655 result = SMB_VFS_CHMOD_ACL(handle->conn,
661 /* Error - return the old errno. */
665 result = ceph_chmod(handle->data, smb_fname->base_name, mode);
666 DEBUG(10, ("[CEPH] chmod(...) = %d\n", result));
670 static int cephwrap_fchmod(struct vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
674 DEBUG(10, ("[CEPH] fchmod(%p, %p, %d)\n", handle, fsp, mode));
677 * We need to do this due to the fact that the default POSIX ACL
678 * chmod modifies the ACL *mask* for the group owner, not the
679 * group owner bits directly. JRA.
683 int saved_errno = errno; /* We might get ENOSYS */
684 if ((result = SMB_VFS_FCHMOD_ACL(fsp, mode)) == 0) {
687 /* Error - return the old errno. */
691 #if defined(HAVE_FCHMOD)
692 result = ceph_fchmod(handle->data, fsp->fh->fd, mode);
693 DEBUG(10, ("[CEPH] fchmod(...) = %d\n", result));
701 static int cephwrap_chown(struct vfs_handle_struct *handle,
702 const struct smb_filename *smb_fname,
707 DEBUG(10, ("[CEPH] chown(%p, %s, %d, %d)\n",
709 smb_fname->base_name,
712 result = ceph_chown(handle->data, smb_fname->base_name, uid, gid);
713 DEBUG(10, ("[CEPH] chown(...) = %d\n", result));
717 static int cephwrap_fchown(struct vfs_handle_struct *handle, files_struct *fsp, uid_t uid, gid_t gid)
722 DEBUG(10, ("[CEPH] fchown(%p, %p, %d, %d)\n", handle, fsp, uid, gid));
723 result = ceph_fchown(handle->data, fsp->fh->fd, uid, gid);
724 DEBUG(10, ("[CEPH] fchown(...) = %d\n", result));
733 static int cephwrap_lchown(struct vfs_handle_struct *handle,
734 const struct smb_filename *smb_fname,
739 DEBUG(10, ("[CEPH] lchown(%p, %s, %d, %d)\n",
741 smb_fname->base_name,
744 result = ceph_lchown(handle->data, smb_fname->base_name, uid, gid);
745 DEBUG(10, ("[CEPH] lchown(...) = %d\n", result));
749 static int cephwrap_chdir(struct vfs_handle_struct *handle, const char *path)
752 DEBUG(10, ("[CEPH] chdir(%p, %s)\n", handle, path));
754 * If the path is just / use chdir because Ceph is below / and
755 * cannot deal with changing directory above its mount point
757 if (path && !strcmp(path, "/"))
760 result = ceph_chdir(handle->data, path);
761 DEBUG(10, ("[CEPH] chdir(...) = %d\n", result));
765 static char *cephwrap_getwd(struct vfs_handle_struct *handle)
767 const char *cwd = ceph_getcwd(handle->data);
768 DEBUG(10, ("[CEPH] getwd(%p) = %s\n", handle, cwd));
769 return SMB_STRDUP(cwd);
772 static int cephwrap_ntimes(struct vfs_handle_struct *handle,
773 const struct smb_filename *smb_fname,
774 struct smb_file_time *ft)
779 if (null_timespec(ft->atime)) {
780 buf.actime = smb_fname->st.st_ex_atime.tv_sec;
782 buf.actime = ft->atime.tv_sec;
784 if (null_timespec(ft->mtime)) {
785 buf.modtime = smb_fname->st.st_ex_mtime.tv_sec;
787 buf.modtime = ft->mtime.tv_sec;
789 if (!null_timespec(ft->create_time)) {
790 set_create_timespec_ea(handle->conn, smb_fname,
793 if (buf.actime == smb_fname->st.st_ex_atime.tv_sec &&
794 buf.modtime == smb_fname->st.st_ex_mtime.tv_sec) {
798 result = ceph_utime(handle->data, smb_fname->base_name, &buf);
799 DEBUG(10, ("[CEPH] ntimes(%p, %s, {%ld, %ld, %ld, %ld}) = %d\n", handle, smb_fname_str_dbg(smb_fname),
800 ft->mtime.tv_sec, ft->atime.tv_sec, ft->ctime.tv_sec,
801 ft->create_time.tv_sec, result));
805 static int strict_allocate_ftruncate(struct vfs_handle_struct *handle, files_struct *fsp, off_t len)
807 off_t space_to_write;
808 uint64_t space_avail;
809 uint64_t bsize,dfree,dsize;
812 SMB_STRUCT_STAT *pst;
814 status = vfs_stat_fsp(fsp);
815 if (!NT_STATUS_IS_OK(status)) {
818 pst = &fsp->fsp_name->st;
821 if (S_ISFIFO(pst->st_ex_mode))
825 if (pst->st_ex_size == len)
828 /* Shrink - just ftruncate. */
829 if (pst->st_ex_size > len)
830 return ftruncate(fsp->fh->fd, len);
832 space_to_write = len - pst->st_ex_size;
834 /* for allocation try fallocate first. This can fail on some
835 platforms e.g. when the filesystem doesn't support it and no
836 emulation is being done by the libc (like on AIX with JFS1). In that
837 case we do our own emulation. fallocate implementations can
838 return ENOTSUP or EINVAL in cases like that. */
839 ret = SMB_VFS_FALLOCATE(fsp, 0, pst->st_ex_size, space_to_write);
840 if (ret == -1 && errno == ENOSPC) {
846 DEBUG(10,("[CEPH] strict_allocate_ftruncate: SMB_VFS_FALLOCATE failed with "
847 "error %d. Falling back to slow manual allocation\n", errno));
849 /* available disk space is enough or not? */
851 get_dfree_info(fsp->conn, fsp->fsp_name, &bsize, &dfree, &dsize);
852 /* space_avail is 1k blocks */
853 if (space_avail == (uint64_t)-1 ||
854 ((uint64_t)space_to_write/1024 > space_avail) ) {
859 /* Write out the real space on disk. */
860 return vfs_slow_fallocate(fsp, pst->st_ex_size, space_to_write);
863 static int cephwrap_ftruncate(struct vfs_handle_struct *handle, files_struct *fsp, off_t len)
870 DEBUG(10, ("[CEPH] ftruncate(%p, %p, %llu\n", handle, fsp, llu(len)));
872 if (lp_strict_allocate(SNUM(fsp->conn))) {
873 result = strict_allocate_ftruncate(handle, fsp, len);
877 /* we used to just check HAVE_FTRUNCATE_EXTEND and only use
878 sys_ftruncate if the system supports it. Then I discovered that
879 you can have some filesystems that support ftruncate
880 expansion and some that don't! On Linux fat can't do
881 ftruncate extend but ext2 can. */
883 result = ceph_ftruncate(handle->data, fsp->fh->fd, len);
887 /* According to W. R. Stevens advanced UNIX prog. Pure 4.3 BSD cannot
888 extend a file with ftruncate. Provide alternate implementation
890 currpos = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
895 /* Do an fstat to see if the file is longer than the requested
896 size in which case the ftruncate above should have
897 succeeded or shorter, in which case seek to len - 1 and
898 write 1 byte of zero */
899 if (SMB_VFS_FSTAT(fsp, &st) == -1) {
904 if (S_ISFIFO(st.st_ex_mode)) {
910 if (st.st_ex_size == len) {
915 if (st.st_ex_size > len) {
916 /* the sys_ftruncate should have worked */
920 if (SMB_VFS_LSEEK(fsp, len-1, SEEK_SET) != len -1)
923 if (SMB_VFS_WRITE(fsp, &c, 1)!=1)
926 /* Seek to where we were */
927 if (SMB_VFS_LSEEK(fsp, currpos, SEEK_SET) != currpos)
936 static bool cephwrap_lock(struct vfs_handle_struct *handle, files_struct *fsp, int op, off_t offset, off_t count, int type)
938 DEBUG(10, ("[CEPH] lock\n"));
942 static int cephwrap_kernel_flock(struct vfs_handle_struct *handle, files_struct *fsp,
943 uint32_t share_mode, uint32_t access_mask)
945 DEBUG(10, ("[CEPH] kernel_flock\n"));
947 * We must return zero here and pretend all is good.
948 * One day we might have this in CEPH.
953 static bool cephwrap_getlock(struct vfs_handle_struct *handle, files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid)
955 DEBUG(10, ("[CEPH] getlock returning false and errno=0\n"));
962 * We cannot let this fall through to the default, because the file might only
963 * be accessible from libceph (which is a user-space client) but the fd might
964 * be for some file the kernel knows about.
966 static int cephwrap_linux_setlease(struct vfs_handle_struct *handle, files_struct *fsp,
971 DEBUG(10, ("[CEPH] linux_setlease\n"));
976 static int cephwrap_symlink(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath)
979 DEBUG(10, ("[CEPH] symlink(%p, %s, %s)\n", handle, oldpath, newpath));
980 result = ceph_symlink(handle->data, oldpath, newpath);
981 DEBUG(10, ("[CEPH] symlink(...) = %d\n", result));
985 static int cephwrap_readlink(struct vfs_handle_struct *handle, const char *path, char *buf, size_t bufsiz)
988 DEBUG(10, ("[CEPH] readlink(%p, %s, %p, %llu)\n", handle, path, buf, llu(bufsiz)));
989 result = ceph_readlink(handle->data, path, buf, bufsiz);
990 DEBUG(10, ("[CEPH] readlink(...) = %d\n", result));
994 static int cephwrap_link(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath)
997 DEBUG(10, ("[CEPH] link(%p, %s, %s)\n", handle, oldpath, newpath));
998 result = ceph_link(handle->data, oldpath, newpath);
999 DEBUG(10, ("[CEPH] link(...) = %d\n", result));
1000 WRAP_RETURN(result);
1003 static int cephwrap_mknod(struct vfs_handle_struct *handle, const char *pathname, mode_t mode, SMB_DEV_T dev)
1006 DEBUG(10, ("[CEPH] mknod(%p, %s)\n", handle, pathname));
1007 result = ceph_mknod(handle->data, pathname, mode, dev);
1008 DEBUG(10, ("[CEPH] mknod(...) = %d\n", result));
1009 WRAP_RETURN(result);
1013 * This is a simple version of real-path ... a better version is needed to
1014 * ask libceph about symbolic links.
1016 static char *cephwrap_realpath(struct vfs_handle_struct *handle, const char *path)
1019 size_t len = strlen(path);
1021 result = SMB_MALLOC_ARRAY(char, PATH_MAX+1);
1022 if (len && (path[0] == '/')) {
1023 int r = asprintf(&result, "%s", path);
1024 if (r < 0) return NULL;
1025 } else if ((len >= 2) && (path[0] == '.') && (path[1] == '/')) {
1027 int r = asprintf(&result, "%s",
1028 handle->conn->connectpath);
1029 if (r < 0) return NULL;
1031 int r = asprintf(&result, "%s/%s",
1032 handle->conn->connectpath, &path[2]);
1033 if (r < 0) return NULL;
1036 int r = asprintf(&result, "%s/%s",
1037 handle->conn->connectpath, path);
1038 if (r < 0) return NULL;
1040 DEBUG(10, ("[CEPH] realpath(%p, %s) = %s\n", handle, path, result));
1044 static int cephwrap_chflags(struct vfs_handle_struct *handle, const char *path,
1051 static int cephwrap_get_real_filename(struct vfs_handle_struct *handle,
1054 TALLOC_CTX *mem_ctx,
1058 * Don't fall back to get_real_filename so callers can differentiate
1059 * between a full directory scan and an actual case-insensitive stat.
1065 static const char *cephwrap_connectpath(struct vfs_handle_struct *handle,
1068 return handle->conn->connectpath;
1071 /****************************************************************
1072 Extended attribute operations.
1073 *****************************************************************/
1075 static ssize_t cephwrap_getxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
1078 DEBUG(10, ("[CEPH] getxattr(%p, %s, %s, %p, %llu)\n", handle, path, name, value, llu(size)));
1079 ret = ceph_getxattr(handle->data, path, name, value, size);
1080 DEBUG(10, ("[CEPH] getxattr(...) = %d\n", ret));
1084 return (ssize_t)ret;
1088 static ssize_t cephwrap_fgetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size)
1091 DEBUG(10, ("[CEPH] fgetxattr(%p, %p, %s, %p, %llu)\n", handle, fsp, name, value, llu(size)));
1092 #if LIBCEPHFS_VERSION_CODE >= LIBCEPHFS_VERSION(0, 94, 0)
1093 ret = ceph_fgetxattr(handle->data, fsp->fh->fd, name, value, size);
1095 ret = ceph_getxattr(handle->data, fsp->fsp_name->base_name, name, value, size);
1097 DEBUG(10, ("[CEPH] fgetxattr(...) = %d\n", ret));
1101 return (ssize_t)ret;
1105 static ssize_t cephwrap_listxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
1108 DEBUG(10, ("[CEPH] listxattr(%p, %s, %p, %llu)\n", handle, path, list, llu(size)));
1109 ret = ceph_listxattr(handle->data, path, list, size);
1110 DEBUG(10, ("[CEPH] listxattr(...) = %d\n", ret));
1114 return (ssize_t)ret;
1119 static ssize_t cephwrap_llistxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
1122 DEBUG(10, ("[CEPH] llistxattr(%p, %s, %p, %llu)\n", handle, path, list, llu(size)));
1123 ret = ceph_llistxattr(handle->data, path, list, size);
1124 DEBUG(10, ("[CEPH] listxattr(...) = %d\n", ret));
1128 return (ssize_t)ret;
1133 static ssize_t cephwrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size)
1136 DEBUG(10, ("[CEPH] flistxattr(%p, %p, %s, %llu)\n", handle, fsp, list, llu(size)));
1137 #if LIBCEPHFS_VERSION_CODE >= LIBCEPHFS_VERSION(0, 94, 0)
1138 ret = ceph_flistxattr(handle->data, fsp->fh->fd, list, size);
1140 ret = ceph_listxattr(handle->data, fsp->fsp_name->base_name, list, size);
1142 DEBUG(10, ("[CEPH] flistxattr(...) = %d\n", ret));
1146 return (ssize_t)ret;
1150 static int cephwrap_removexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
1153 DEBUG(10, ("[CEPH] removexattr(%p, %s, %s)\n", handle, path, name));
1154 ret = ceph_removexattr(handle->data, path, name);
1155 DEBUG(10, ("[CEPH] removexattr(...) = %d\n", ret));
1159 static int cephwrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name)
1162 DEBUG(10, ("[CEPH] fremovexattr(%p, %p, %s)\n", handle, fsp, name));
1163 #if LIBCEPHFS_VERSION_CODE >= LIBCEPHFS_VERSION(0, 94, 0)
1164 ret = ceph_fremovexattr(handle->data, fsp->fh->fd, name);
1166 ret = ceph_removexattr(handle->data, fsp->fsp_name->base_name, name);
1168 DEBUG(10, ("[CEPH] fremovexattr(...) = %d\n", ret));
1172 static int cephwrap_setxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
1175 DEBUG(10, ("[CEPH] setxattr(%p, %s, %s, %p, %llu, %d)\n", handle, path, name, value, llu(size), flags));
1176 ret = ceph_setxattr(handle->data, path, name, value, size, flags);
1177 DEBUG(10, ("[CEPH] setxattr(...) = %d\n", ret));
1181 static int cephwrap_fsetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags)
1184 DEBUG(10, ("[CEPH] fsetxattr(%p, %p, %s, %p, %llu, %d)\n", handle, fsp, name, value, llu(size), flags));
1185 #if LIBCEPHFS_VERSION_CODE >= LIBCEPHFS_VERSION(0, 94, 0)
1186 ret = ceph_fsetxattr(handle->data, fsp->fh->fd,
1187 name, value, size, flags);
1189 ret = ceph_setxattr(handle->data, fsp->fsp_name->base_name, name, value, size, flags);
1191 DEBUG(10, ("[CEPH] fsetxattr(...) = %d\n", ret));
1195 static bool cephwrap_aio_force(struct vfs_handle_struct *handle, struct files_struct *fsp)
1199 * We do not support AIO yet.
1202 DEBUG(10, ("[CEPH] cephwrap_aio_force(%p, %p) = false (errno = ENOTSUP)\n", handle, fsp));
1207 static struct vfs_fn_pointers ceph_fns = {
1208 /* Disk operations */
1210 .connect_fn = cephwrap_connect,
1211 .disconnect_fn = cephwrap_disconnect,
1212 .disk_free_fn = cephwrap_disk_free,
1213 .get_quota_fn = cephwrap_get_quota,
1214 .set_quota_fn = cephwrap_set_quota,
1215 .statvfs_fn = cephwrap_statvfs,
1217 /* Directory operations */
1219 .opendir_fn = cephwrap_opendir,
1220 .fdopendir_fn = cephwrap_fdopendir,
1221 .readdir_fn = cephwrap_readdir,
1222 .seekdir_fn = cephwrap_seekdir,
1223 .telldir_fn = cephwrap_telldir,
1224 .rewind_dir_fn = cephwrap_rewinddir,
1225 .mkdir_fn = cephwrap_mkdir,
1226 .rmdir_fn = cephwrap_rmdir,
1227 .closedir_fn = cephwrap_closedir,
1229 /* File operations */
1231 .open_fn = cephwrap_open,
1232 .close_fn = cephwrap_close,
1233 .read_fn = cephwrap_read,
1234 .pread_fn = cephwrap_pread,
1235 .write_fn = cephwrap_write,
1236 .pwrite_fn = cephwrap_pwrite,
1237 .lseek_fn = cephwrap_lseek,
1238 .sendfile_fn = cephwrap_sendfile,
1239 .recvfile_fn = cephwrap_recvfile,
1240 .rename_fn = cephwrap_rename,
1241 .fsync_fn = cephwrap_fsync,
1242 .stat_fn = cephwrap_stat,
1243 .fstat_fn = cephwrap_fstat,
1244 .lstat_fn = cephwrap_lstat,
1245 .unlink_fn = cephwrap_unlink,
1246 .chmod_fn = cephwrap_chmod,
1247 .fchmod_fn = cephwrap_fchmod,
1248 .chown_fn = cephwrap_chown,
1249 .fchown_fn = cephwrap_fchown,
1250 .lchown_fn = cephwrap_lchown,
1251 .chdir_fn = cephwrap_chdir,
1252 .getwd_fn = cephwrap_getwd,
1253 .ntimes_fn = cephwrap_ntimes,
1254 .ftruncate_fn = cephwrap_ftruncate,
1255 .lock_fn = cephwrap_lock,
1256 .kernel_flock_fn = cephwrap_kernel_flock,
1257 .linux_setlease_fn = cephwrap_linux_setlease,
1258 .getlock_fn = cephwrap_getlock,
1259 .symlink_fn = cephwrap_symlink,
1260 .readlink_fn = cephwrap_readlink,
1261 .link_fn = cephwrap_link,
1262 .mknod_fn = cephwrap_mknod,
1263 .realpath_fn = cephwrap_realpath,
1264 .chflags_fn = cephwrap_chflags,
1265 .get_real_filename_fn = cephwrap_get_real_filename,
1266 .connectpath_fn = cephwrap_connectpath,
1268 /* EA operations. */
1269 .getxattr_fn = cephwrap_getxattr,
1270 .fgetxattr_fn = cephwrap_fgetxattr,
1271 .listxattr_fn = cephwrap_listxattr,
1272 .flistxattr_fn = cephwrap_flistxattr,
1273 .removexattr_fn = cephwrap_removexattr,
1274 .fremovexattr_fn = cephwrap_fremovexattr,
1275 .setxattr_fn = cephwrap_setxattr,
1276 .fsetxattr_fn = cephwrap_fsetxattr,
1278 /* Posix ACL Operations */
1279 .sys_acl_get_file_fn = posixacl_xattr_acl_get_file,
1280 .sys_acl_get_fd_fn = posixacl_xattr_acl_get_fd,
1281 .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
1282 .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
1283 .sys_acl_set_file_fn = posixacl_xattr_acl_set_file,
1284 .sys_acl_set_fd_fn = posixacl_xattr_acl_set_fd,
1285 .sys_acl_delete_def_file_fn = posixacl_xattr_acl_delete_def_file,
1287 /* aio operations */
1288 .aio_force_fn = cephwrap_aio_force,
1291 NTSTATUS vfs_ceph_init(void);
1292 NTSTATUS vfs_ceph_init(void)
1294 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,