2 Unix SMB/CIFS implementation.
3 VFS structures and parameters
4 Copyright (C) Jeremy Allison 1999-2005
5 Copyright (C) Tim Potter 1999
6 Copyright (C) Alexander Bokovoy 2002-2005
7 Copyright (C) Stefan (metze) Metzmacher 2003
8 Copyright (C) Volker Lendecke 2009
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 This work was sponsored by Optifacio Software Services, Inc.
29 /* Avoid conflict with an AIX include file */
36 * As we're now (thanks Andrew ! :-) using file_structs and connection
37 * structs in the vfs - then anyone writing a vfs must include includes.h...
41 * This next constant specifies the version number of the VFS interface
42 * this smbd will load. Increment this if *ANY* changes are made to the
45 * If you change anything here, please also update modules/vfs_full_audit.c.
50 * Changed to version 2 for CIFS UNIX extensions (mknod and link added). JRA.
51 * Changed to version 3 for POSIX acl extensions. JRA.
52 * Changed to version 4 for cascaded VFS interface. Alexander Bokovoy.
53 * Changed to version 5 for sendfile addition. JRA.
54 * Changed to version 6 for the new module system, fixed cascading and quota functions. --metze
55 * Changed to version 7 to include the get_nt_acl info parameter. JRA.
56 * Changed to version 8 includes EA calls. JRA.
57 * Changed to version 9 to include the get_shadow_data call. --metze
58 * Changed to version 10 to include pread pwrite calls.
59 * Changed to version 11 to include seekdir telldir rewinddir calls. JRA
60 * Changed to version 12 to add mask and attributes to opendir(). JRA
61 * Also include aio calls. JRA.
62 * Changed to version 13 as the internal structure of files_struct has changed. JRA
63 * Changed to version 14 as we had to change DIR to SMB_STRUCT_DIR. JRA
64 * Changed to version 15 as we added the statvfs call. JRA
65 * Changed to version 16 as we added the getlock call. JRA
66 * Changed to version 17 as we removed redundant connection_struct parameters. --jpeach
67 * Changed to version 18 to add fsp parameter to the open call -- jpeach
68 * Also include kernel_flock call - jmcd
69 * Changed to version 19, kernel change notify has been merged
70 * Also included linux setlease call - jmcd
71 * Changed to version 20, use ntimes call instead of utime (greater
72 * timestamp resolition. JRA.
73 * Changed to version21 to add chflags operation -- jpeach
74 * Changed to version22 to add lchown operation -- jra
75 * Leave at 22 - not yet released. But change set_nt_acl to return an NTSTATUS. jra.
76 * Leave at 22 - not yet released. Add file_id_create operation. --metze
77 * Leave at 22 - not yet released. Change all BOOL parameters (int) to bool. jra.
78 * Leave at 22 - not yet released. Added recvfile.
79 * Leave at 22 - not yet released. Change get_nt_acl to return NTSTATUS - vl
80 * Leave at 22 - not yet released. Change get_nt_acl to *not* take a
81 * files_struct. - obnox.
82 * Leave at 22 - not yet released. Remove parameter fd from fget_nt_acl. - obnox
83 * Leave at 22 - not yet released. Remove parameter fd from gset_nt_acl. - obnox
84 * Leave at 22 - not yet released. Remove parameter fd from pread. - obnox
85 * Leave at 22 - not yet released. Remove parameter fd from pwrite. - obnox
86 * Leave at 22 - not yet released. Remove parameter fd from lseek. - obnox
87 * Leave at 22 - not yet released. Remove parameter fd from fsync. - obnox
88 * Leave at 22 - not yet released. Remove parameter fd from fstat. - obnox
89 * Leave at 22 - not yet released. Remove parameter fd from fchmod. - obnox
90 * Leave at 22 - not yet released. Remove parameter fd from fchown. - obnox
91 * Leave at 22 - not yet released. Remove parameter fd from ftruncate. - obnox
92 * Leave at 22 - not yet released. Remove parameter fd from lock. - obnox
93 * Leave at 22 - not yet released. Remove parameter fd from kernel_flock. - obnox
94 * Leave at 22 - not yet released. Remove parameter fd from linux_setlease. - obnox
95 * Leave at 22 - not yet released. Remove parameter fd from getlock. - obnox
96 * Leave at 22 - not yet released. Remove parameter fd from sys_acl_get_fd. - obnox
97 * Leave at 22 - not yet released. Remove parameter fd from fchmod_acl. - obnox
98 * Leave at 22 - not yet released. Remove parameter fd from sys_acl_set_fd. - obnox
99 * Leave at 22 - not yet released. Remove parameter fd from fgetxattr. - obnox
100 * Leave at 22 - not yet released. Remove parameter fd from flistxattr. - obnox
101 * Leave at 22 - not yet released. Remove parameter fd from fremovexattr. - obnox
102 * Leave at 22 - not yet released. Remove parameter fd from fsetxattr. - obnox
103 * Leave at 22 - not yet released. Remove parameter fd from aio_cancel. - obnox
104 * Leave at 22 - not yet released. Remove parameter fd from read. - obnox
105 * Leave at 22 - not yet released. Remove parameter fd from write. - obnox
106 * Leave at 22 - not yet released. Remove parameter fromfd from sendfile. - obnox
107 * Leave at 22 - not yet released. Remove parameter fromfd from recvfile. - obnox
108 * Leave at 22 - not yet released. Additional change: add operations for offline files -- ab
109 * Leave at 22 - not yet released. Add the streaminfo call. -- jpeach, vl
110 * Leave at 22 - not yet released. Remove parameter fd from close_fn. - obnox
111 * Changed to version 23 - remove set_nt_acl call. This can only be done via an
113 * Changed to version 24 - make security descriptor const in fset_nt_acl. JRA.
114 * Changed to version 25 - Jelmer's change from SMB_BIG_UINT to uint64_t.
115 * Leave at 25 - not yet released. Add create_file call. -- tprouty.
116 * Leave at 25 - not yet released. Add create time to ntimes. -- tstecher.
117 * Leave at 25 - not yet released. Add get_alloc_size call. -- tprouty.
118 * Leave at 25 - not yet released. Add SMB_STRUCT_STAT to readdir. - sdann
119 * Leave at 25 - not yet released. Add init_search_op call. - sdann
120 * Leave at 25 - not yet released. Add locking calls. -- zkirsch.
121 * Leave at 25 - not yet released. Add strict locking calls. -- drichards.
122 * Changed to version 26 - Plumb struct smb_filename to SMB_VFS_CREATE_FILE,
123 * SMB_VFS_OPEN, SMB_VFS_STAT, SMB_VFS_LSTAT,
124 * SMB_VFS_RENAME, SMB_VFS_UNLINK, SMB_VFS_NTIMES.
125 * Changed to version 27 - not yet released. Added enum timestamp_set_resolution
126 * return to fs_capabilities call. JRA.
127 * Leave at 27 - not yet released. Add translate_name VFS call to convert
128 * UNIX names to Windows supported names -- asrinivasan.
129 * Changed to version 28 - Add private_flags uint32_t to CREATE call.
130 * Leave at 28 - not yet released. Change realpath to assume NULL and return a
131 * malloc'ed path. JRA.
132 * Leave at 28 - not yet released. Move posix_fallocate into the VFS
133 * where it belongs. JRA.
134 * Leave at 28 - not yet released. Rename posix_fallocate to fallocate
135 * to split out the two possible uses. JRA.
136 * Leave at 28 - not yet released. Add fdopendir. JRA.
137 * Leave at 28 - not yet released. Rename open function to open_fn. - gd
138 * Leave at 28 - not yet released. Make getwd function always return malloced memory. JRA.
139 * Bump to version 29 - Samba 3.6.0 will ship with interface version 28.
140 * Leave at 29 - not yet releases. Add fsctl. Richard Sharpe
141 * Leave at 29 - not yet released. add SMB_VFS_GET_DFS_REFERRAL() - metze
142 * Leave at 29 - not yet released. Remove l{list,get,set,remove}xattr - abartlet
143 * Leave at 29 - not yet released. move to plain off_t - abartlet
144 * Leave at 29 - not yet released. Remove sys_acl functions other than set and get - abartlet
145 * Leave at 29 - not yet released. Added backup_intent bool to files_struct - JRA
146 * Leave at 29 - not yet released. Add durable handle functions - metze obnox
147 * Leave at 29 - not yet released. Added sys_acl_blob_get_file and sys_acl_blob_get_fd
148 * Bump to version 30 - Samba 4.0.0 will ship with interface version 30
149 * Leave at 30 - not yet released. Added conn->cwd to save vfs_GetWd() calls.
150 * Leave at 30 - not yet released. Changed sys_acl_blob_get_file interface to remove type
151 * Bump to version 31 - Samba 4.1.0 will ship with interface version 31
152 * Leave at 31 - not yet released. Make struct vuid_cache_entry in
153 * connection_struct a pointer.
154 * Leave at 31 - not yet released. Add share_access to vuid_cache_entry.
155 * Leave at 31 - not yet released. add SMB_VFS_COPY_CHUNK()
156 * Leave at 31 - not yet released. Remove the unused
157 * fsp->pending_break_messages array
158 * Leave at 31 - not yet released. add SMB_VFS_[GET SET]_COMPRESSION()
160 * Bump to version 32 - Samba 4.2 will ship with that.
161 * Version 32 - Add "lease" to CREATE_FILE operation
162 * Version 32 - Add "lease" to struct files_struct
163 * Version 32 - Add SMB_VFS_READDIR_ATTR()
164 * Version 32 - Add in and out create context blobs to create_file
165 * Version 32 - Remove unnecessary SMB_VFS_DISK_FREE() small_query parameter
166 * Bump to version 33 - Samba 4.3 will ship with that.
167 * Version 33 - change fallocate mode flags param from enum->uint32_t
168 * Version 33 - Add snapshot create delete calls
169 * Version 33 - Add OS X SMB2 AAPL copyfile extension flag to fsp
170 * Version 33 - Remove notify_watch_fn
171 * Bump to version 34 - Samba 4.4 will ship with that
172 * Version 34 - Remove bool posix_open, add uint64_t posix_flags
173 * Version 34 - Added bool posix_pathnames to struct smb_request
174 * Bump to version 35 - Samba 4.5 will ship with that
175 * Version 35 - Change get_nt_acl_fn from const char *, to
176 * const struct smb_filename *
177 * Version 35 - Change mkdir from const char *, to
178 * const struct smb_filename *
179 * Version 35 - Change rmdir from const char *, to
180 * const struct smb_filename *
181 * Version 35 - Change opendir from const char *, to
182 * const struct smb_filename *
183 * Version 35 - Wrap aio async funtions args in a struct vfs_aio_state
184 * Version 35 - Change chmod from const char *, to
185 * const struct smb_filename *
186 * Version 35 - Change chmod_acl from const char *, to
187 * const struct smb_filename *
188 * Version 35 - Change chown from const char *, to
189 * const struct smb_filename *
190 * Version 35 - Change lchown from const char *, to
191 * const struct smb_filename *
192 * Version 35 - Change streaminfo from const char *, to
193 * const struct smb_filename *
194 * Version 35 - Add uint32_t flags to struct smb_filename
195 * Version 35 - Add get set fget fset dos attribute functions.
196 * Version 35 - Add bool use_ofd_locks to struct files_struct
197 * Bump to version 36 - Samba 4.6 will ship with that
198 * Version 36 - Remove is_offline and set_offline
199 * Version 37 - Module init functions now take a TALLOC_CTX * parameter.
200 * Version 37 - Add vfs_copy_chunk_flags for DUP_EXTENTS_TO_FILE
201 * Version 37 - Change sys_acl_delete_def_file from const char *
202 * to const struct smb_filename *
203 * Version 37 - Change sys_acl_get_file from const char *
204 * to const struct smb_filename *
205 * Version 37 - Change sys_acl_blob_get_file from const char *
206 * to const struct smb_filename *
207 * Version 37 - Change sys_acl_set_file from const char *
208 * to const struct smb_filename *
209 * Version 37 - Change listxattr from const char *
210 * to const struct smb_filename *
211 * Version 37 - Change removexattr from const char *
212 * to const struct smb_filename *
213 * Version 37 - Change setxattr from const char *
214 * to const struct smb_filename *
215 * Version 37 - Change getxattr from const char *
216 * to const struct smb_filename *
217 * Version 37 - Change mknod from const char * to const struct smb_filename *
218 * Version 37 - Change chflags from const char *
219 * to const struct smb_filename *
220 * Version 37 - Change disk_free from const char *
221 * to const struct smb_filename *
222 * Version 37 - Change get_quota from const char *
223 * to const struct smb_filename *
224 * Version 37 - Change link from const char *
225 * to const struct smb_filename *
226 * Version 37 - Change statvfs from const char *
227 * to const struct smb_filename *
228 * Version 37 - Change readlink from const char *
229 * to const struct smb_filename *
230 * Version 37 - Change symlink from const char *
231 * to const struct smb_filename *
232 * Version 37 - Change chdir from const char *
233 * to const struct smb_filename *
234 * Version 37 - Change getwd from char *
235 * to const struct smb_filename *
236 * Version 37 - Change conn->cwd from char *
237 * to struct smb_filename *
238 * Version 37 - Change realpath from char *
239 * to struct smb_filename *
240 * Version 37 - Change connectpath from char *
241 * to struct smb_filename *
242 * Version 37 - Add SMB_VFS_OFFLOAD_READ_SEND RECV
243 * Version 37 - Rename SMB_VFS_COPY_CHUNK_SEND RECV to
244 * SMB_VFS_OFFLOAD_READ_SEND RECV
245 * Version 37 - Remove SMB_VFS_STRICT_UNLOCK
246 * Version 37 - Rename SMB_VFS_STRICT_LOCK to
247 * SMB_VFS_STRICT_LOCK_CHECK
248 * Version 38 - Remove SMB_VFS_INIT_SEARCH_OP
249 * Bump to version 39, Samba 4.9 will ship with that
250 * Version 39 - Remove SMB_VFS_FSYNC
251 * Only implement async versions.
252 * Version 39 - Remove SMB_VFS_READ
253 * All users are now pread or async versions.
254 * Version 39 - Remove SMB_VFS_WRITE
255 * All users are now pwrite or async versions.
256 * Version 39 - Remove SMB_VFS_CHMOD_ACL - no longer used.
257 * Version 39 - Remove SMB_VFS_FCHMOD_ACL - no longer used.
258 * Version 39 - Remove struct dfree_cached_info pointer from
260 * Bump to version 40, Samba 4.10 will ship with that
261 * Version 40 - Add SMB_VFS_GETXATTRAT_SEND RECV
262 * Version 40 - Add SMB_VFS_GET_DOS_ATTRIBUTES_SEND RECV
263 * Bump to version 41, Samba 4.11 will ship with that
264 * Version 41 - Remove SMB_VFS_BRL_CANCEL_WINDOWS
265 * Version 41 - Remove unused st_ex_mask from struct stat_ex
266 * Version 41 - convert struct stat_ex.st_ex_calculated_birthtime to flags
267 * Version 41 - add st_ex_itime to struct stat_ex
268 * Version 41 - add st_ex_file_id to struct stat_ex
269 * Version 41 - add SMB_VFS_FS_FILE_ID
270 * Version 41 - Remove "blocking_lock" parameter from
271 * SMB_VFS_BRL_LOCK_WINDOWS
272 * Version 41 - Remove "msg_ctx" parameter from SMB_VFS_BRL_UNLOCK_WINDOWS
273 * Bump to version 42, Samba 4.12 will ship with that
274 * Version 42 - Remove share_access member from struct files_struct
275 * Version 42 - Make "lease" a const* in create_file_fn
276 * Version 42 - Move SMB_VFS_RENAME -> SMB_VFS_RENAMEAT
277 * Version 42 - Move SMB_VFS_LINK -> SMB_VFS_LINKAT.
278 * Version 42 - Move SMB_VFS_MKNOD -> SMB_VFS_MKDNODAT.
279 * Version 42 - Move SMB_VFS_READLINK -> SMB_VFS_READLINKAT.
280 * Version 42 - Move SMB_VFS_SYMLINK -> SMB_VFS_SYMLINKAT.
281 * Version 42 - Move SMB_VFS_MKDIR -> SMB_VFS_MKDIRAT.
282 * Version 42 - Move change_to_user() -> change_to_user_and_service()
283 * Version 42 - Move change_to_user_by_fsp() -> change_to_user_and_service_by_fsp()
284 * Version 42 - Move [un]become_user*() -> [un]become_user_without_service*()
285 * Version 42 - Move SMB_VFS_UNLINK -> SMB_VFS_UNLINKAT.
286 * Version 42 - Add SMB_VFS_FCNTL
287 * Version 42 - Remove SMB_VFS_RMDIR.
288 * Use SMB_VFS_UNLINKAT(.., AT_REMOVEDIR) instead.
289 * Version 42 - Remove SMB_VFS_CHOWN
290 * Version 42 - Remove struct write_cache *wcp from files_struct
291 * Version 42 - SMB_VFS_NTIMES() receives null times based on UTIMES_OMIT
292 * Version 42 - Add SMB_VFS_CREATE_DFS_PATHAT()
293 * Version 42 - Add SMB_VFS_READ_DFS_PATHAT()
294 * Change to Version 43 - will ship with 4.13.
295 * Version 43 - Remove deferred_close from struct files_struct
296 * Version 43 - Remove SMB_VFS_OPENDIR()
297 * Version 43 - Remove original_lcomp from struct smb_filename
298 * Version 43 - files_struct flags:
299 * bool kernel_share_modes_taken
300 * bool update_write_time_triggered
301 * bool update_write_time_on_close
302 * bool write_time_forced
308 * bool aio_write_behind
309 * bool initial_delete_on_close
310 * bool delete_on_close
315 * bool lock_failure_seen
316 * changed to bitfields.
317 * Version 43 - convert SMB_VFS_GET_REAL_FILENAME() arg path
318 * to be a struct smb_filename
319 * Version 43 - convert link_contents arg of SMB_VFS_SYMLINKAT()
320 * to struct smb_filename
321 * Version 43 - Move SMB_VFS_GET_NT_ACL() -> SMB_VFS_GET_NT_ACL_AT().
322 * Version 43 - Remove root_dir_fid from SMB_VFS_CREATE_FILE().
323 * Version 43 - Add dirfsp to struct files_struct
324 * Version 43 - Add dirfsp args to SMB_VFS_CREATE_FILE()
325 * Version 43 - Add SMB_VFS_OPENAT()
326 * Version 43 - Remove SMB_VFS_OPEN()
327 * Version 43 - SMB_VFS_READ_DFS_PATHAT() should take a non-const name.
328 There's no easy way to return stat info for a DFS link
330 * Change to Version 44 - will ship with 4.14.
331 * Version 44 - Remove dirfsp arg from struct files_struct
332 * Version 44 - Remove dirfsp arg to SMB_VFS_CREATE_FILE()
333 * Version 44 - Make dirfsp arg to SMB_VFS_READLINKAT() const
334 * Version 44 - Add a flag 'encryption_required' to files_struct that that
335 * prevents that encrypted connections can be downgraded.
336 * Version 44 - Add a flag 'is_pathref' to struct files_struct.
337 * Version 44 - Add 'is_fsa' flag to struct files_struct.
338 * Version 44 - Add 'have_proc_fds' flag to struct connection_struct.
339 * Version 44 - Add 'have_proc_fds' flag to struct files_struct.
340 * Version 44 - Add dirfsp arg to SMB_VFS_READDIR()
341 * Version 44 - Replace SMB_VFS_GET_COMPRESSION() with SMB_VFS_FGET_COMPRESSION()
342 * Version 44 - Add type argument to SMB_VFS_SYS_ACL_SET_FD()
343 * Version 44 - Remove SMB_VFS_SYS_ACL_SET_FILE()
344 * Change to Version 45 - will ship with 4.15
345 * Version 45 - Remove SMB_VFS_LISTXATTR
346 * Version 45 - Remove SMB_VFS_SETXATTR
347 * Version 45 - Remove SMB_VFS_REMOVEXATTR
348 * Version 45 - Remove SMB_VFS_GET_DOS_ATTRIBUTES()
349 * Version 45 - Remove SMB_VFS_CHMOD
350 * Version 45 - Add SMB_VFS_FNTIMES
351 * Version 45 - Remove SMB_VFS_NTIMES
352 * Version 45 - ADD SMB_VFS_FSTREAMINFO
353 * Version 45 - Add SMB_VFS_FREADDIR_ATTR
354 * Version 45 - Remove SMB_VFS_READDIR_ATTR
355 * Version 45 - Add SMB_VFS_SYS_ACL_DELETE_DEF_FD
356 * Version 45 - Remove SMB_VFS_SYS_ACL_DELETE_DEF_FILE
357 * Version 45 - Add SMB_VFS_PARENT_PATHNAME
358 * Version 45 - Remove SMB_VFS_GET_NT_ACL_AT
359 * Version 45 - Remove SYS_ACL_GET_FILE
362 #define SMB_VFS_INTERFACE_VERSION 45
365 All intercepted VFS operations must be declared as static functions inside module source
366 in order to keep smbd namespace unpolluted. See source of audit, extd_audit, fake_perms and recycle
367 example VFS modules for more details.
370 /* VFS operations structure */
372 struct vfs_handle_struct;
373 struct connection_struct;
375 struct security_descriptor;
376 struct vfs_statvfs_struct;
379 struct smb_file_time;
381 struct dfs_GetDFSReferral;
383 typedef union unid_t {
392 struct smbd_server_connection *sconn;
393 struct tevent_timer *timeout;
394 struct smb2_lease lease;
397 typedef struct files_struct {
398 struct files_struct *next, *prev;
400 struct smbXsrv_open *op;
401 struct connection_struct *conn;
402 struct fd_handle *fh;
403 unsigned int num_smb_operations;
404 struct file_id file_id;
405 uint64_t initial_allocation_size; /* Faked up initial allocation on disk. */
407 uint64_t vuid; /* SMB2 compat */
408 struct timeval open_time;
409 uint32_t access_mask; /* NTCreateX access bits (FILE_READ_DATA etc.) */
411 bool is_pathref : 1; /* See below */
412 bool is_fsa : 1; /* See below */
413 bool have_proc_fds : 1;
414 bool kernel_share_modes_taken : 1;
415 bool update_write_time_triggered : 1;
416 bool update_write_time_on_close : 1;
417 bool write_time_forced : 1;
422 bool is_directory : 1;
424 bool aio_write_behind : 1;
425 bool initial_delete_on_close : 1;
426 bool delete_on_close : 1;
428 bool backup_intent : 1;
429 bool use_ofd_locks : 1;
431 bool lock_failure_seen : 1;
432 bool encryption_required : 1;
435 struct tevent_timer *update_write_time_event;
436 struct timespec close_write_time;
441 * Cache of our lease_type, stored as "current_state" in
444 int leases_db_seqnum;
447 struct fsp_lease *lease;
448 int sent_oplock_break;
449 struct tevent_timer *oplock_timeout;
450 struct lock_struct last_lock_failure;
451 int current_lock_count; /* Count the number of outstanding locks and pending locks. */
453 uint64_t posix_flags;
454 struct smb_filename *fsp_name;
455 uint32_t name_hash; /* Jenkins hash of full pathname. */
456 uint64_t mid; /* Mid of the operation that created us. */
458 struct vfs_fsp_data *vfs_extension;
459 struct fake_file_handle *fake_file_handle;
461 struct notify_change_buf *notify;
463 struct files_struct *base_fsp; /* placeholder for delete on close */
464 struct files_struct *stream_fsp; /* backlink from base_fsp */
467 * Cache of share_mode_data->flags
469 int share_mode_flags_seqnum;
470 uint16_t share_mode_flags;
473 * Read-only cached brlock record, thrown away when the
474 * brlock.tdb seqnum changes. This avoids fetching data from
475 * the brlock.tdb on every read/write call.
478 struct byte_range_lock *brlock_rec;
480 struct dptr_struct *dptr;
482 /* if not NULL, means this is a print file */
483 struct print_file_data *print_file;
486 * Optimize the aio_requests array for high performance: Never
487 * shrink it, maintain num_aio_requests separately
489 unsigned num_aio_requests;
490 struct tevent_req **aio_requests;
493 * Requests waiting for smb1 byte range locks. They are
494 * generated by smbd_smb1_do_locks_send and are required here,
495 * because lock cancel operations index through reply_lockingX
496 * not based on mid but on the lock type and range.
498 struct tevent_req **blocked_smb1_lock_reqs;
501 * SMB1 remembers lock failures and delays repeated blocking
502 * lock attempts on the same offset.
504 uint64_t lock_failure_offset;
508 * The fsp flags "is_pathref" and "is_fsa"
509 * =======================================
514 * The flag "is_pathref" is a property of the low-level VFS-layer file
515 * handle. If "is_pathref" is true, only a subset of VFS calls are allowed
516 * on the handle and on systems that support it, the low-level fd is open
517 * with O_PATH. If "is_pathref" is false, the low-level fd is a "normal"
518 * file descriptor that can be used with all VFS calls.
520 * The flag "is_fsa" is a property of the FSA layer in Samba. The term FSA
521 * layer refers to the parts of smbs that implement Windows NTFS semantics
522 * on-top of a POSIX filesystem. If "is_fsa" is true, the fsp was
523 * processed by the SMB_VFS_CREATE_FILE() VFS call, otherwise the fsp was
524 * created by openat_pathref_fsp() which only connected the low-level
525 * handle by calling into VFS SMB_VFS_OPENAT(), but the whole FSA layer
528 * Note that only three possible combinations of "is_pathref" and "is_fsa"
531 * | is_fsa \ is_pathref | + | - |
532 * |---------------------+---+---|
536 * So a fsp can't be a full low-level fd (is_pathref=false) and not be
537 * processed by the FSA layer.
542 * On Linux the O_PATH flag to open() can be used to open a filehandle on
543 * a file or directory with interesting properties:
545 * - the file-handle indicates a location in the filesystem tree,
546 * - no permission checks are done by the kernel and
547 * - only operations that act purely at the file descriptor level are
550 * The file itself is not opened, and other file operations (e.g.,
551 * read(2), write(2), fchmod(2), fchown(2), fgetxattr(2), ioctl(2),
552 * mmap(2)) fail with the error EBADF.
554 * The following subset of operations that is relevant to Samba is allowed:
557 * - fchdir(2), if the file descriptor refers to a directory,
560 * - passing the file descriptor as the dirfd argument of openat() and the
561 * other "*at()" system calls. This includes linkat(2) with
562 * AT_EMPTY_PATH (or via procfs using AT_SYMLINK_FOLLOW) even if the
563 * file is not a directory.
565 * Opening a file or directory with the O_PATH flag requires no
566 * permissions on the object itself (but does require execute permission
567 * on the directories in the path prefix). By contrast, obtaining a
568 * reference to a filesystem object by opening it with the O_RDONLY flag
569 * requires that the caller have read permission on the object, even when
570 * the subsequent operation (e.g., fchdir(2), fstat(2)) does not require
571 * read permis‐ sion on the object. [1]
573 * If for example Samba receives an SMB request to open a file requesting
574 * SEC_FILE_READ_ATTRIBUTE access rights because the client wants to read
575 * the file's metadata from the handle, Samba will have to call POSIX
576 * open() with at least O_RDONLY access rights.
578 * Usecase for O_PATH in Samba
579 * ---------------------------
581 * By leveraging this Linux specific flags we can avoid permission
582 * mismatches as described above. Additionally O_PATH allows basing all
583 * filesystem accesses done by the fileserver on handle based syscalls by
584 * opening all client pathnames with O_PATH and consistently using for
585 * example fstat() instead of stat() throughout the codebase.
587 * Subsequently we will refer to Samba file-handles (fsp's) opened with
588 * O_PATH "path referencing fsp's" or "pathref" fsp's for short.
590 * Currently Samba bases the decision whether to call POSIX open() on a
591 * client pathname or whether to leave the low-level handle at -1, what we
592 * call a stat-open, in the function open_file() and it is based on the
593 * client requested SMB acccess mask.
595 * The set of rights that trigger an open() include READ_CONTROL_ACCESS,
596 * resulting in a call to open() with at least O_RDONLY. If the filesystem
597 * supports NT style ACLs natively (like GPFS or ZFS), the filesystem may
598 * grant the user requested right READ_CONTROL_ACCESS, but it may not
599 * grant READ_DATA (O_RDONLY), resulting in a permission denied error.
601 * Historically the set of access rights that triggered opening a file was:
609 * SEC_FLAG_SYSTEM_SECURITY
610 * READ_CONTROL_ACCESS
612 * By using O_PATH this can be trimmed down to
619 * Fallback on systems without O_PATH support
620 * ------------------------------------------
622 * A fallback is needed that allows opening a file-handle with the same
623 * higher level semantics even if the system doesn't support O_PATH. This
624 * is implemented by qimpersonating the root user for the open()
625 * syscall. To avoid bypassing restrictive permissions on intermediate
626 * directories components of a path, the root user is only impersonated
627 * after changing directory to the parent directory of the client
628 * requested pathname.
630 * In order to avoid privilege escalation security issues with these root
631 * opened file-handles we must carefully control their usage throughout
632 * the codebase. Therefor we
634 * - tag the pathref fsp's with the flag "is_pathref" and
636 * - control access to the file-handle by making the structure private and only
637 * allowing access with accessor functions.
639 * Two functions are used to fetch the low-level system file-handle from an fsp
641 * - fsp_get_io_fd(fsp): enforces fsp is NOT a pathref file-handle and
643 * - fsp_get_pathref_fd(fsp): allows fsp to be either a pathref file-handle or a
644 * traditional POSIX file-handle opened with O_RDONLY or any other POSIX open
647 * The general guideline when to use which function is:
649 * - if you do something like fstat(fd), use fsp_get_pathref_fd(fsp),
650 * - if you do something like *at(dirfd, ...), use fsp_get_pathref_fd(fsp),
651 * - if you want to print the fd for example in DEBUG messages, use
652 * fsp_get_pathref_fd(fsp),
653 * - if you want to call close(fd), use fsp_get_pathref_fd(fsp),
654 * - if you're doing a logical comparison of fd values, use
655 * fsp_get_pathref_fd().
657 * In any other case use fsp_get_io_fd().
660 #define FSP_POSIX_FLAGS_OPEN 0x01
661 #define FSP_POSIX_FLAGS_RENAME 0x02
662 #define FSP_POSIX_FLAGS_PATHNAMES 0x04
664 #define FSP_POSIX_FLAGS_ALL \
665 (FSP_POSIX_FLAGS_OPEN | \
666 FSP_POSIX_FLAGS_PATHNAMES | \
667 FSP_POSIX_FLAGS_RENAME)
669 struct vuid_cache_entry {
670 struct auth_session_info *session_info;
671 uint64_t vuid; /* SMB2 compat */
673 uint32_t share_access;
677 unsigned int next_entry;
678 struct vuid_cache_entry array[VUID_CACHE_SIZE];
684 } name_compare_entry;
686 struct share_params {
690 typedef struct connection_struct {
691 struct connection_struct *next, *prev;
692 struct smbd_server_connection *sconn; /* can be NULL */
693 struct smbXsrv_tcon *tcon; /* can be NULL */
694 uint32_t cnum; /* an index passed over the wire */
695 struct share_params *params;
697 struct vuid_cache *vuid_cache;
700 bool read_only; /* Attributes for the current user of the share. */
702 uint32_t share_access;
703 /* Does this filesystem honor
704 sub second timestamps on files
705 and directories when setting time ? */
706 enum timestamp_set_resolution ts_res;
708 struct files_struct *cwd_fsp; /* Working directory. */
711 struct vfs_handle_struct *vfs_handles; /* for the new plugins */
714 * This represents the user information on this connection. Depending
715 * on the vuid using this tid, this might change per SMB request.
717 struct auth_session_info *session_info;
720 * If the "force group" parameter is set, this is the primary gid that
721 * may be used in the users token, depending on the vuid using this tid.
723 gid_t force_group_gid;
725 uint64_t vuid; /* vuid of user who *opened* this connection, or UID_FIELD_INVALID */
728 time_t lastused_count;
730 unsigned int num_smb_operations; /* Count of smb operations on this tree. */
734 /* Semantics requested by the client or forced by the server config. */
737 bool short_case_preserve;
739 /* Semantics provided by the underlying filesystem. */
741 /* Device number of the directory of the share mount.
742 Used to ensure unique FileIndex returns. */
743 SMB_DEV_T base_share_dev;
745 name_compare_entry *hide_list; /* Per-share list of files to return as hidden. */
746 name_compare_entry *veto_list; /* Per-share list of files to veto (never show). */
747 name_compare_entry *veto_oplock_list; /* Per-share list of files to refuse oplocks on. */
748 name_compare_entry *aio_write_behind_list; /* Per-share list of files to use aio write behind on. */
749 struct trans_state *pending_trans;
751 struct rpc_pipe_client *spoolss_pipe;
755 struct smbd_smb2_request;
762 uint64_t mid; /* For compatibility with SMB2. */
764 uint64_t vuid; /* For compatibility with SMB2. */
770 const uint8_t *inbuf;
773 * Async handling in the main smb processing loop is directed by
774 * outbuf: reply_xxx routines indicate sync behaviour by putting their
775 * reply into "outbuf". If they leave it as NULL, they take care of it
776 * themselves, possibly later.
778 * If async handling is wanted, the reply_xxx routine must make sure
779 * that it talloc_move()s the smb_req somewhere else.
785 connection_struct *conn;
786 struct smbd_server_connection *sconn;
787 struct smbXsrv_connection *xconn;
790 * Pointer to session, can be NULL,
791 * eg during negprot and session setup.
793 struct smbXsrv_session *session;
795 struct smb_perfcount_data pcd;
798 * Chained request handling
800 struct files_struct *chain_fsp;
803 * state information for async smb handling
808 * Back pointer to smb2 request.
810 struct smbd_smb2_request *smb2req;
813 * Request list for chained requests, we're part of it.
815 struct smb_request **chain;
817 struct timeval request_time;
819 bool posix_pathnames;
823 * Info about an alternate data stream
826 struct stream_struct {
833 struct smb_file_time {
834 struct timespec mtime;
835 struct timespec atime;
836 struct timespec ctime;
837 struct timespec create_time;
843 struct smb_filename {
851 * Internal file handle, O_PATH based if available,
852 * otherwise O_RDONLY as root.
854 struct files_struct *fsp;
857 * Link between the struct smb_filename and the above
858 * fsp. fsp_link is a talloc child of the fsp. Ensures a possible
859 * talloc_free(fsp) resets the smb_fname->fsp pointer to NULL in
860 * the is fsp_link talloc destructor.
862 struct fsp_smb_fname_link *fsp_link;
866 * smb_filename flags. Define in terms of the FSP_POSIX_FLAGS_XX
867 * to keep the numeric values consistent.
870 #define SMB_FILENAME_POSIX_PATH FSP_POSIX_FLAGS_PATHNAMES
872 #define VFS_FIND(__fn__) while (handle->fns->__fn__##_fn==NULL) { \
873 handle = handle->next; \
876 enum vfs_translate_direction {
877 vfs_translate_to_unix = 0,
878 vfs_translate_to_windows
881 enum vfs_fallocate_flags {
882 VFS_FALLOCATE_FL_KEEP_SIZE = 0x0001,
883 VFS_FALLOCATE_FL_PUNCH_HOLE = 0x0002,
886 struct vfs_aio_state {
892 Available VFS operations. These values must be in sync with vfs_ops struct
893 (struct vfs_fn_pointers and struct vfs_handle_pointers inside of struct vfs_ops).
894 In particular, if new operations are added to vfs_ops, appropriate constants
895 should be added to vfs_op_type so that order of them kept same as in vfs_ops.
897 struct shadow_copy_data;
899 struct vfs_fn_pointers {
900 /* Disk operations */
902 int (*connect_fn)(struct vfs_handle_struct *handle, const char *service, const char *user);
903 void (*disconnect_fn)(struct vfs_handle_struct *handle);
904 uint64_t (*disk_free_fn)(struct vfs_handle_struct *handle,
905 const struct smb_filename *smb_fname,
909 int (*get_quota_fn)(struct vfs_handle_struct *handle,
910 const struct smb_filename *smb_fname,
911 enum SMB_QUOTA_TYPE qtype,
914 int (*set_quota_fn)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
915 int (*get_shadow_copy_data_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, struct shadow_copy_data *shadow_copy_data, bool labels);
916 int (*statvfs_fn)(struct vfs_handle_struct *handle,
917 const struct smb_filename *smb_fname,
918 struct vfs_statvfs_struct *statbuf);
919 uint32_t (*fs_capabilities_fn)(struct vfs_handle_struct *handle, enum timestamp_set_resolution *p_ts_res);
922 * Note: that "struct dfs_GetDFSReferral *r"
923 * needs to be a valid TALLOC_CTX
925 NTSTATUS (*get_dfs_referrals_fn)(struct vfs_handle_struct *handle,
926 struct dfs_GetDFSReferral *r);
927 NTSTATUS (*create_dfs_pathat_fn)(struct vfs_handle_struct *handle,
928 struct files_struct *dirfsp,
929 const struct smb_filename *smb_fname,
930 const struct referral *reflist,
931 size_t referral_count);
932 NTSTATUS (*read_dfs_pathat_fn)(struct vfs_handle_struct *handle,
934 struct files_struct *dirfsp,
935 struct smb_filename *smb_fname,
936 struct referral **ppreflist,
937 size_t *preferral_count);
939 /* Directory operations */
941 DIR *(*fdopendir_fn)(struct vfs_handle_struct *handle, files_struct *fsp, const char *mask, uint32_t attributes);
942 struct dirent *(*readdir_fn)(struct vfs_handle_struct *handle,
943 struct files_struct *dirfsp,
945 SMB_STRUCT_STAT *sbuf);
946 void (*seekdir_fn)(struct vfs_handle_struct *handle, DIR *dirp, long offset);
947 long (*telldir_fn)(struct vfs_handle_struct *handle, DIR *dirp);
948 void (*rewind_dir_fn)(struct vfs_handle_struct *handle, DIR *dirp);
949 int (*mkdirat_fn)(struct vfs_handle_struct *handle,
950 struct files_struct *dirfsp,
951 const struct smb_filename *smb_fname,
953 int (*closedir_fn)(struct vfs_handle_struct *handle, DIR *dir);
955 /* File operations */
957 int (*openat_fn)(struct vfs_handle_struct *handle,
958 const struct files_struct *dirfsp,
959 const struct smb_filename *smb_fname,
960 struct files_struct *fsp,
963 NTSTATUS (*create_file_fn)(struct vfs_handle_struct *handle,
964 struct smb_request *req,
965 struct smb_filename *smb_fname,
966 uint32_t access_mask,
967 uint32_t share_access,
968 uint32_t create_disposition,
969 uint32_t create_options,
970 uint32_t file_attributes,
971 uint32_t oplock_request,
972 const struct smb2_lease *lease,
973 uint64_t allocation_size,
974 uint32_t private_flags,
975 struct security_descriptor *sd,
976 struct ea_list *ea_list,
977 files_struct **result,
979 const struct smb2_create_blobs *in_context_blobs,
980 struct smb2_create_blobs *out_context_blobs);
981 int (*close_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
982 ssize_t (*pread_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n, off_t offset);
983 struct tevent_req *(*pread_send_fn)(struct vfs_handle_struct *handle,
985 struct tevent_context *ev,
986 struct files_struct *fsp,
988 size_t n, off_t offset);
989 ssize_t (*pread_recv_fn)(struct tevent_req *req, struct vfs_aio_state *state);
990 ssize_t (*pwrite_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n, off_t offset);
991 struct tevent_req *(*pwrite_send_fn)(struct vfs_handle_struct *handle,
993 struct tevent_context *ev,
994 struct files_struct *fsp,
996 size_t n, off_t offset);
997 ssize_t (*pwrite_recv_fn)(struct tevent_req *req, struct vfs_aio_state *state);
998 off_t (*lseek_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t offset, int whence);
999 ssize_t (*sendfile_fn)(struct vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *header, off_t offset, size_t count);
1000 ssize_t (*recvfile_fn)(struct vfs_handle_struct *handle, int fromfd, files_struct *tofsp, off_t offset, size_t count);
1001 int (*renameat_fn)(struct vfs_handle_struct *handle,
1002 struct files_struct *srcdir_fsp,
1003 const struct smb_filename *smb_fname_src,
1004 struct files_struct *dstdir_fsp,
1005 const struct smb_filename *smb_fname_dst);
1006 struct tevent_req *(*fsync_send_fn)(struct vfs_handle_struct *handle,
1007 TALLOC_CTX *mem_ctx,
1008 struct tevent_context *ev,
1009 struct files_struct *fsp);
1010 int (*fsync_recv_fn)(struct tevent_req *req, struct vfs_aio_state *state);
1011 int (*stat_fn)(struct vfs_handle_struct *handle, struct smb_filename *smb_fname);
1012 int (*fstat_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
1013 int (*lstat_fn)(struct vfs_handle_struct *handle, struct smb_filename *smb_filename);
1014 uint64_t (*get_alloc_size_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_STAT *sbuf);
1015 int (*unlinkat_fn)(struct vfs_handle_struct *handle,
1016 struct files_struct *srcdir_fsp,
1017 const struct smb_filename *smb_fname,
1019 int (*fchmod_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
1020 int (*fchown_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, uid_t uid, gid_t gid);
1021 int (*lchown_fn)(struct vfs_handle_struct *handle,
1022 const struct smb_filename *smb_fname,
1025 int (*chdir_fn)(struct vfs_handle_struct *handle,
1026 const struct smb_filename *smb_fname);
1027 struct smb_filename *(*getwd_fn)(struct vfs_handle_struct *handle,
1028 TALLOC_CTX *mem_ctx);
1029 int (*fntimes_fn)(struct vfs_handle_struct *handle,
1030 struct files_struct *fsp,
1031 struct smb_file_time *ft);
1032 int (*ftruncate_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t offset);
1033 int (*fallocate_fn)(struct vfs_handle_struct *handle,
1034 struct files_struct *fsp,
1038 bool (*lock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, off_t offset, off_t count, int type);
1039 int (*kernel_flock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp,
1040 uint32_t share_access, uint32_t access_mask);
1041 int (*fcntl_fn)(struct vfs_handle_struct *handle,
1042 struct files_struct *fsp, int cmd, va_list cmd_arg);
1043 int (*linux_setlease_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int leasetype);
1044 bool (*getlock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid);
1045 int (*symlinkat_fn)(struct vfs_handle_struct *handle,
1046 const struct smb_filename *link_contents,
1047 struct files_struct *dirfsp,
1048 const struct smb_filename *new_smb_fname);
1049 int (*readlinkat_fn)(struct vfs_handle_struct *handle,
1050 const struct files_struct *dirfsp,
1051 const struct smb_filename *smb_fname,
1054 int (*linkat_fn)(struct vfs_handle_struct *handle,
1055 struct files_struct *srcfsp,
1056 const struct smb_filename *old_smb_fname,
1057 struct files_struct *dstfsp,
1058 const struct smb_filename *new_smb_fname,
1060 int (*mknodat_fn)(struct vfs_handle_struct *handle,
1061 struct files_struct *dirfsp,
1062 const struct smb_filename *smb_fname,
1065 struct smb_filename *(*realpath_fn)(struct vfs_handle_struct *handle,
1067 const struct smb_filename *smb_fname);
1068 int (*chflags_fn)(struct vfs_handle_struct *handle,
1069 const struct smb_filename *smb_fname,
1070 unsigned int flags);
1071 struct file_id (*file_id_create_fn)(struct vfs_handle_struct *handle,
1072 const SMB_STRUCT_STAT *sbuf);
1073 uint64_t (*fs_file_id_fn)(struct vfs_handle_struct *handle,
1074 const SMB_STRUCT_STAT *sbuf);
1075 struct tevent_req *(*offload_read_send_fn)(TALLOC_CTX *mem_ctx,
1076 struct tevent_context *ev,
1077 struct vfs_handle_struct *handle,
1078 struct files_struct *fsp,
1083 NTSTATUS (*offload_read_recv_fn)(struct tevent_req *req,
1084 struct vfs_handle_struct *handle,
1085 TALLOC_CTX *mem_ctx,
1086 DATA_BLOB *token_blob);
1087 struct tevent_req *(*offload_write_send_fn)(struct vfs_handle_struct *handle,
1088 TALLOC_CTX *mem_ctx,
1089 struct tevent_context *ev,
1092 off_t transfer_offset,
1093 struct files_struct *dest_fsp,
1096 NTSTATUS (*offload_write_recv_fn)(struct vfs_handle_struct *handle,
1097 struct tevent_req *req,
1099 NTSTATUS (*fget_compression_fn)(struct vfs_handle_struct *handle,
1100 TALLOC_CTX *mem_ctx,
1101 struct files_struct *fsp,
1102 uint16_t *_compression_fmt);
1103 NTSTATUS (*set_compression_fn)(struct vfs_handle_struct *handle,
1104 TALLOC_CTX *mem_ctx,
1105 struct files_struct *fsp,
1106 uint16_t compression_fmt);
1107 NTSTATUS (*snap_check_path_fn)(struct vfs_handle_struct *handle,
1108 TALLOC_CTX *mem_ctx,
1109 const char *service_path,
1110 char **base_volume);
1111 NTSTATUS (*snap_create_fn)(struct vfs_handle_struct *handle,
1112 TALLOC_CTX *mem_ctx,
1113 const char *base_volume,
1118 NTSTATUS (*snap_delete_fn)(struct vfs_handle_struct *handle,
1119 TALLOC_CTX *mem_ctx,
1123 NTSTATUS (*fstreaminfo_fn)(struct vfs_handle_struct *handle,
1124 struct files_struct *fsp,
1125 TALLOC_CTX *mem_ctx,
1126 unsigned int *num_streams,
1127 struct stream_struct **streams);
1129 int (*get_real_filename_fn)(struct vfs_handle_struct *handle,
1130 const struct smb_filename *path,
1132 TALLOC_CTX *mem_ctx,
1135 const char *(*connectpath_fn)(struct vfs_handle_struct *handle,
1136 const struct smb_filename *smb_fname);
1138 NTSTATUS (*brl_lock_windows_fn)(struct vfs_handle_struct *handle,
1139 struct byte_range_lock *br_lck,
1140 struct lock_struct *plock);
1142 bool (*brl_unlock_windows_fn)(struct vfs_handle_struct *handle,
1143 struct byte_range_lock *br_lck,
1144 const struct lock_struct *plock);
1146 bool (*strict_lock_check_fn)(struct vfs_handle_struct *handle,
1147 struct files_struct *fsp,
1148 struct lock_struct *plock);
1150 NTSTATUS (*translate_name_fn)(struct vfs_handle_struct *handle,
1152 enum vfs_translate_direction direction,
1153 TALLOC_CTX *mem_ctx,
1154 char **mapped_name);
1156 NTSTATUS (*parent_pathname_fn)(struct vfs_handle_struct *handle,
1157 TALLOC_CTX *mem_ctx,
1158 const struct smb_filename *smb_fname_in,
1159 struct smb_filename **parent_dir_out,
1160 struct smb_filename **atname_out);
1162 NTSTATUS (*fsctl_fn)(struct vfs_handle_struct *handle,
1163 struct files_struct *fsp,
1167 const uint8_t *_in_data,
1169 uint8_t **_out_data,
1170 uint32_t max_out_len,
1173 NTSTATUS (*fget_dos_attributes_fn)(struct vfs_handle_struct *handle,
1174 struct files_struct *fsp,
1177 NTSTATUS (*fset_dos_attributes_fn)(struct vfs_handle_struct *hande,
1178 struct files_struct *fsp,
1181 struct tevent_req *(*get_dos_attributes_send_fn)(
1182 TALLOC_CTX *mem_ctx,
1183 struct tevent_context *ev,
1184 struct vfs_handle_struct *handle,
1185 files_struct *dir_fsp,
1186 struct smb_filename *smb_fname);
1188 NTSTATUS (*get_dos_attributes_recv_fn)(
1189 struct tevent_req *req,
1190 struct vfs_aio_state *aio_state,
1193 /* NT ACL operations. */
1195 NTSTATUS (*fget_nt_acl_fn)(struct vfs_handle_struct *handle,
1196 struct files_struct *fsp,
1197 uint32_t security_info,
1198 TALLOC_CTX *mem_ctx,
1199 struct security_descriptor **ppdesc);
1200 NTSTATUS (*fset_nt_acl_fn)(struct vfs_handle_struct *handle,
1201 struct files_struct *fsp,
1202 uint32_t security_info_sent,
1203 const struct security_descriptor *psd);
1205 NTSTATUS (*audit_file_fn)(struct vfs_handle_struct *handle,
1206 struct smb_filename *file,
1207 struct security_acl *sacl,
1208 uint32_t access_requested,
1209 uint32_t access_denied);
1211 /* POSIX ACL operations. */
1213 SMB_ACL_T (*sys_acl_get_fd_fn)(struct vfs_handle_struct *handle,
1214 struct files_struct *fsp,
1215 SMB_ACL_TYPE_T type,
1216 TALLOC_CTX *mem_ctx);
1217 int (*sys_acl_blob_get_file_fn)(struct vfs_handle_struct *handle,
1218 const struct smb_filename *smb_fname,
1219 TALLOC_CTX *mem_ctx,
1220 char **blob_description,
1222 int (*sys_acl_blob_get_fd_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp,
1223 TALLOC_CTX *mem_ctx, char **blob_description,
1225 int (*sys_acl_set_fd_fn)(struct vfs_handle_struct *handle,
1226 struct files_struct *fsp,
1227 SMB_ACL_TYPE_T type,
1229 int (*sys_acl_delete_def_fd_fn)(struct vfs_handle_struct *handle,
1230 struct files_struct *fsp);
1232 /* EA operations. */
1233 ssize_t (*getxattr_fn)(struct vfs_handle_struct *handle,
1234 const struct smb_filename *smb_fname,
1238 struct tevent_req *(*getxattrat_send_fn)(
1239 TALLOC_CTX *mem_ctx,
1240 struct tevent_context *ev,
1241 struct vfs_handle_struct *handle,
1242 files_struct *dir_fsp,
1243 const struct smb_filename *smb_fname,
1244 const char *xattr_name,
1246 ssize_t (*getxattrat_recv_fn)(struct tevent_req *req,
1247 struct vfs_aio_state *aio_state,
1248 TALLOC_CTX *mem_ctx,
1249 uint8_t **xattr_value);
1250 ssize_t (*fgetxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size);
1251 ssize_t (*flistxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size);
1252 int (*fremovexattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name);
1253 int (*fsetxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags);
1255 /* aio operations */
1256 bool (*aio_force_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
1258 /* durable handle operations */
1259 NTSTATUS (*durable_cookie_fn)(struct vfs_handle_struct *handle,
1260 struct files_struct *fsp,
1261 TALLOC_CTX *mem_ctx,
1263 NTSTATUS (*durable_disconnect_fn)(struct vfs_handle_struct *handle,
1264 struct files_struct *fsp,
1265 const DATA_BLOB old_cookie,
1266 TALLOC_CTX *mem_ctx,
1267 DATA_BLOB *new_cookie);
1268 NTSTATUS (*durable_reconnect_fn)(struct vfs_handle_struct *handle,
1269 struct smb_request *smb1req,
1270 struct smbXsrv_open *op,
1271 const DATA_BLOB old_cookie,
1272 TALLOC_CTX *mem_ctx,
1273 struct files_struct **fsp,
1274 DATA_BLOB *new_cookie);
1276 NTSTATUS (*freaddir_attr_fn)(struct vfs_handle_struct *handle,
1277 struct files_struct *fsp,
1278 TALLOC_CTX *mem_ctx,
1279 struct readdir_attr_data **attr_data);
1283 VFS operation description. Each VFS module registers an array of vfs_op_tuple to VFS subsystem,
1284 which describes all operations this module is willing to intercept.
1285 VFS subsystem initializes then the conn->vfs_ops and conn->vfs_opaque_ops structs
1286 using this information.
1289 typedef struct vfs_handle_struct {
1290 struct vfs_handle_struct *next, *prev;
1292 struct connection_struct *conn;
1293 const struct vfs_fn_pointers *fns;
1295 void (*free_data)(void **data);
1296 } vfs_handle_struct;
1299 typedef struct vfs_statvfs_struct {
1300 /* For undefined recommended transfer size return -1 in that field */
1301 uint32_t OptimalTransferSize; /* bsize on some os, iosize on other os */
1305 The next three fields are in terms of the block size.
1306 (above). If block size is unknown, 4096 would be a
1307 reasonable block size for a server to report.
1308 Note that returning the blocks/blocksavail removes need
1309 to make a second call (to QFSInfo level 0x103 to get this info.
1310 UserBlockAvail is typically less than or equal to BlocksAvail,
1311 if no distinction is made return the same value in each.
1314 uint64_t TotalBlocks;
1315 uint64_t BlocksAvail; /* bfree */
1316 uint64_t UserBlocksAvail; /* bavail */
1318 /* For undefined Node fields or FSID return -1 */
1319 uint64_t TotalFileNodes;
1320 uint64_t FreeFileNodes;
1321 uint64_t FsIdentifier; /* fsid */
1322 /* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
1323 /* NB flags can come from FILE_SYSTEM_DEVICE_INFO call */
1326 } vfs_statvfs_struct;
1328 /* Add a new FSP extension of the given type. Returns a pointer to the
1331 #define VFS_ADD_FSP_EXTENSION(handle, fsp, type, destroy_fn) \
1332 (type *)vfs_add_fsp_extension_notype(handle, (fsp), sizeof(type), (destroy_fn))
1334 /* Return a pointer to the existing FSP extension data. */
1335 #define VFS_FETCH_FSP_EXTENSION(handle, fsp) \
1336 vfs_fetch_fsp_extension(handle, (fsp))
1338 /* Return the talloc context associated with an FSP extension. */
1339 #define VFS_MEMCTX_FSP_EXTENSION(handle, fsp) \
1340 vfs_memctx_fsp_extension(handle, (fsp))
1342 /* Remove and destroy an FSP extension. */
1343 #define VFS_REMOVE_FSP_EXTENSION(handle, fsp) \
1344 vfs_remove_fsp_extension((handle), (fsp))
1346 #define SMB_VFS_HANDLE_GET_DATA(handle, datap, type, ret) { \
1347 if (!(handle)||((datap=(type *)(handle)->data)==NULL)) { \
1348 DEBUG(0,("%s() failed to get vfs_handle->data!\n",__FUNCTION__)); \
1353 #define SMB_VFS_HANDLE_SET_DATA(handle, datap, free_fn, type, ret) { \
1355 DEBUG(0,("%s() failed to set handle->data!\n",__FUNCTION__)); \
1358 if ((handle)->free_data) { \
1359 (handle)->free_data(&(handle)->data); \
1361 (handle)->data = (void *)datap; \
1362 (handle)->free_data = free_fn; \
1366 #define SMB_VFS_HANDLE_FREE_DATA(handle) { \
1367 if ((handle) && (handle)->free_data) { \
1368 (handle)->free_data(&(handle)->data); \
1372 /* Check whether module-specific data handle was already allocated or not */
1373 #define SMB_VFS_HANDLE_TEST_DATA(handle) ( !(handle) || !(handle)->data ? False : True )
1375 #define SMB_VFS_OP(x) ((void *) x)
1377 #define DEFAULT_VFS_MODULE_NAME "/[Default VFS]/"
1379 #include "vfs_macros.h"
1381 int smb_vfs_call_connect(struct vfs_handle_struct *handle,
1382 const char *service, const char *user);
1383 void smb_vfs_call_disconnect(struct vfs_handle_struct *handle);
1384 uint64_t smb_vfs_call_disk_free(struct vfs_handle_struct *handle,
1385 const struct smb_filename *smb_filename,
1389 int smb_vfs_call_get_quota(struct vfs_handle_struct *handle,
1390 const struct smb_filename *smb_filename,
1391 enum SMB_QUOTA_TYPE qtype,
1393 SMB_DISK_QUOTA *qt);
1394 int smb_vfs_call_set_quota(struct vfs_handle_struct *handle,
1395 enum SMB_QUOTA_TYPE qtype, unid_t id,
1396 SMB_DISK_QUOTA *qt);
1397 int smb_vfs_call_get_shadow_copy_data(struct vfs_handle_struct *handle,
1398 struct files_struct *fsp,
1399 struct shadow_copy_data *shadow_copy_data,
1401 int smb_vfs_call_statvfs(struct vfs_handle_struct *handle,
1402 const struct smb_filename *smb_fname,
1403 struct vfs_statvfs_struct *statbuf);
1404 uint32_t smb_vfs_call_fs_capabilities(struct vfs_handle_struct *handle,
1405 enum timestamp_set_resolution *p_ts_res);
1407 * Note: that "struct dfs_GetDFSReferral *r" needs to be a valid TALLOC_CTX
1409 NTSTATUS smb_vfs_call_get_dfs_referrals(struct vfs_handle_struct *handle,
1410 struct dfs_GetDFSReferral *r);
1411 NTSTATUS smb_vfs_call_create_dfs_pathat(struct vfs_handle_struct *handle,
1412 struct files_struct *dirfsp,
1413 const struct smb_filename *smb_fname,
1414 const struct referral *reflist,
1415 size_t referral_count);
1416 NTSTATUS smb_vfs_call_read_dfs_pathat(struct vfs_handle_struct *handle,
1417 TALLOC_CTX *mem_ctx,
1418 struct files_struct *dirfsp,
1419 struct smb_filename *smb_fname,
1420 struct referral **ppreflist,
1421 size_t *preferral_count);
1422 DIR *smb_vfs_call_fdopendir(struct vfs_handle_struct *handle,
1423 struct files_struct *fsp,
1425 uint32_t attributes);
1426 struct dirent *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
1427 struct files_struct *dirfsp,
1429 SMB_STRUCT_STAT *sbuf);
1430 void smb_vfs_call_seekdir(struct vfs_handle_struct *handle,
1431 DIR *dirp, long offset);
1432 long smb_vfs_call_telldir(struct vfs_handle_struct *handle,
1434 void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
1436 int smb_vfs_call_mkdirat(struct vfs_handle_struct *handle,
1437 struct files_struct *dirfsp,
1438 const struct smb_filename *smb_fname,
1440 int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
1442 int smb_vfs_call_openat(struct vfs_handle_struct *handle,
1443 const struct files_struct *dirfsp,
1444 const struct smb_filename *smb_fname,
1445 struct files_struct *fsp,
1448 NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
1449 struct smb_request *req,
1450 struct smb_filename *smb_fname,
1451 uint32_t access_mask,
1452 uint32_t share_access,
1453 uint32_t create_disposition,
1454 uint32_t create_options,
1455 uint32_t file_attributes,
1456 uint32_t oplock_request,
1457 const struct smb2_lease *lease,
1458 uint64_t allocation_size,
1459 uint32_t private_flags,
1460 struct security_descriptor *sd,
1461 struct ea_list *ea_list,
1462 files_struct **result,
1464 const struct smb2_create_blobs *in_context_blobs,
1465 struct smb2_create_blobs *out_context_blobs);
1466 int smb_vfs_call_close(struct vfs_handle_struct *handle,
1467 struct files_struct *fsp);
1468 ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
1469 struct files_struct *fsp, void *data, size_t n,
1471 struct tevent_req *smb_vfs_call_pread_send(struct vfs_handle_struct *handle,
1472 TALLOC_CTX *mem_ctx,
1473 struct tevent_context *ev,
1474 struct files_struct *fsp,
1476 size_t n, off_t offset);
1477 ssize_t SMB_VFS_PREAD_RECV(struct tevent_req *req, struct vfs_aio_state *state);
1479 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
1480 struct files_struct *fsp, const void *data,
1481 size_t n, off_t offset);
1482 struct tevent_req *smb_vfs_call_pwrite_send(struct vfs_handle_struct *handle,
1483 TALLOC_CTX *mem_ctx,
1484 struct tevent_context *ev,
1485 struct files_struct *fsp,
1487 size_t n, off_t offset);
1488 ssize_t SMB_VFS_PWRITE_RECV(struct tevent_req *req, struct vfs_aio_state *state);
1490 off_t smb_vfs_call_lseek(struct vfs_handle_struct *handle,
1491 struct files_struct *fsp, off_t offset,
1493 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
1494 files_struct *fromfsp, const DATA_BLOB *header,
1495 off_t offset, size_t count);
1496 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
1497 files_struct *tofsp, off_t offset,
1499 int smb_vfs_call_renameat(struct vfs_handle_struct *handle,
1500 struct files_struct *srcfsp,
1501 const struct smb_filename *smb_fname_src,
1502 struct files_struct *dstfsp,
1503 const struct smb_filename *smb_fname_dst);
1505 struct tevent_req *smb_vfs_call_fsync_send(struct vfs_handle_struct *handle,
1506 TALLOC_CTX *mem_ctx,
1507 struct tevent_context *ev,
1508 struct files_struct *fsp);
1509 int SMB_VFS_FSYNC_RECV(struct tevent_req *req, struct vfs_aio_state *state);
1511 int smb_vfs_fsync_sync(files_struct *fsp);
1512 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
1513 struct smb_filename *smb_fname);
1514 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
1515 struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
1516 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
1517 struct smb_filename *smb_filename);
1518 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
1519 struct files_struct *fsp,
1520 const SMB_STRUCT_STAT *sbuf);
1521 int smb_vfs_call_unlinkat(struct vfs_handle_struct *handle,
1522 struct files_struct *dirfsp,
1523 const struct smb_filename *smb_fname,
1525 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
1526 struct files_struct *fsp, mode_t mode);
1527 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
1528 struct files_struct *fsp, uid_t uid, gid_t gid);
1529 int smb_vfs_call_lchown(struct vfs_handle_struct *handle,
1530 const struct smb_filename *smb_fname,
1533 int smb_vfs_call_chdir(struct vfs_handle_struct *handle,
1534 const struct smb_filename *smb_fname);
1535 struct smb_filename *smb_vfs_call_getwd(struct vfs_handle_struct *handle,
1537 int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
1538 const struct smb_filename *smb_fname,
1539 struct smb_file_time *ft);
1540 int smb_vfs_call_fntimes(struct vfs_handle_struct *handle,
1541 struct files_struct *fsp,
1542 struct smb_file_time *ft);
1543 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
1544 struct files_struct *fsp, off_t offset);
1545 int smb_vfs_call_fallocate(struct vfs_handle_struct *handle,
1546 struct files_struct *fsp,
1550 bool smb_vfs_call_lock(struct vfs_handle_struct *handle,
1551 struct files_struct *fsp, int op, off_t offset,
1552 off_t count, int type);
1553 int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
1554 struct files_struct *fsp, uint32_t share_access,
1555 uint32_t access_mask);
1556 int smb_vfs_call_fcntl(struct vfs_handle_struct *handle,
1557 struct files_struct *fsp, int cmd, ...);
1558 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
1559 struct files_struct *fsp, int leasetype);
1560 bool smb_vfs_call_getlock(struct vfs_handle_struct *handle,
1561 struct files_struct *fsp, off_t *poffset,
1562 off_t *pcount, int *ptype, pid_t *ppid);
1563 int smb_vfs_call_symlinkat(struct vfs_handle_struct *handle,
1564 const struct smb_filename *link_contents,
1565 struct files_struct *dirfsp,
1566 const struct smb_filename *new_smb_fname);
1567 int smb_vfs_call_readlinkat(struct vfs_handle_struct *handle,
1568 const struct files_struct *dirfsp,
1569 const struct smb_filename *smb_fname,
1572 int smb_vfs_call_linkat(struct vfs_handle_struct *handle,
1573 struct files_struct *srcfsp,
1574 const struct smb_filename *old_smb_fname,
1575 struct files_struct *dstfsp,
1576 const struct smb_filename *new_smb_fname,
1578 int smb_vfs_call_mknodat(struct vfs_handle_struct *handle,
1579 struct files_struct *dirfsp,
1580 const struct smb_filename *smb_fname,
1583 struct smb_filename *smb_vfs_call_realpath(struct vfs_handle_struct *handle,
1585 const struct smb_filename *smb_fname);
1586 int smb_vfs_call_chflags(struct vfs_handle_struct *handle,
1587 const struct smb_filename *smb_fname,
1588 unsigned int flags);
1589 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
1590 const SMB_STRUCT_STAT *sbuf);
1591 uint64_t smb_vfs_call_fs_file_id(struct vfs_handle_struct *handle,
1592 const SMB_STRUCT_STAT *sbuf);
1593 NTSTATUS smb_vfs_call_fstreaminfo(struct vfs_handle_struct *handle,
1594 struct files_struct *fsp,
1595 TALLOC_CTX *mem_ctx,
1596 unsigned int *num_streams,
1597 struct stream_struct **streams);
1598 int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
1599 const struct smb_filename *path,
1601 TALLOC_CTX *mem_ctx,
1603 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
1604 const struct smb_filename *smb_fname);
1605 NTSTATUS smb_vfs_call_brl_lock_windows(struct vfs_handle_struct *handle,
1606 struct byte_range_lock *br_lck,
1607 struct lock_struct *plock);
1608 bool smb_vfs_call_brl_unlock_windows(struct vfs_handle_struct *handle,
1609 struct byte_range_lock *br_lck,
1610 const struct lock_struct *plock);
1611 bool smb_vfs_call_strict_lock_check(struct vfs_handle_struct *handle,
1612 struct files_struct *fsp,
1613 struct lock_struct *plock);
1614 NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
1616 enum vfs_translate_direction direction,
1617 TALLOC_CTX *mem_ctx,
1618 char **mapped_name);
1619 NTSTATUS smb_vfs_call_parent_pathname(struct vfs_handle_struct *handle,
1620 TALLOC_CTX *mem_ctx,
1621 const struct smb_filename *smb_fname_in,
1622 struct smb_filename **parent_dir_out,
1623 struct smb_filename **atname_out);
1624 NTSTATUS smb_vfs_call_fsctl(struct vfs_handle_struct *handle,
1625 struct files_struct *fsp,
1629 const uint8_t *_in_data,
1631 uint8_t **_out_data,
1632 uint32_t max_out_len,
1634 NTSTATUS smb_vfs_call_fget_dos_attributes(struct vfs_handle_struct *handle,
1635 struct files_struct *fsp,
1637 NTSTATUS smb_vfs_call_fset_dos_attributes(struct vfs_handle_struct *handle,
1638 struct files_struct *fsp,
1640 struct tevent_req *smb_vfs_call_get_dos_attributes_send(
1641 TALLOC_CTX *mem_ctx,
1642 struct tevent_context *ev,
1643 struct vfs_handle_struct *handle,
1644 files_struct *dir_fsp,
1645 struct smb_filename *smb_fname);
1646 NTSTATUS smb_vfs_call_get_dos_attributes_recv(
1647 struct tevent_req *req,
1648 struct vfs_aio_state *aio_state,
1650 struct tevent_req *smb_vfs_call_offload_read_send(
1651 TALLOC_CTX *mem_ctx,
1652 struct tevent_context *ev,
1653 struct vfs_handle_struct *handle,
1654 struct files_struct *fsp,
1659 NTSTATUS smb_vfs_call_offload_read_recv(struct tevent_req *req,
1660 struct vfs_handle_struct *handle,
1661 TALLOC_CTX *mem_ctx,
1662 DATA_BLOB *token_blob);
1663 struct tevent_req *smb_vfs_call_offload_write_send(struct vfs_handle_struct *handle,
1664 TALLOC_CTX *mem_ctx,
1665 struct tevent_context *ev,
1668 off_t transfer_offset,
1669 struct files_struct *dest_fsp,
1672 NTSTATUS smb_vfs_call_offload_write_recv(struct vfs_handle_struct *handle,
1673 struct tevent_req *req,
1675 NTSTATUS smb_vfs_call_fget_compression(struct vfs_handle_struct *handle,
1676 TALLOC_CTX *mem_ctx,
1677 struct files_struct *fsp,
1678 uint16_t *_compression_fmt);
1679 NTSTATUS smb_vfs_call_set_compression(struct vfs_handle_struct *handle,
1680 TALLOC_CTX *mem_ctx,
1681 struct files_struct *fsp,
1682 uint16_t compression_fmt);
1683 NTSTATUS smb_vfs_call_snap_check_path(vfs_handle_struct *handle,
1684 TALLOC_CTX *mem_ctx,
1685 const char *service_path,
1686 char **base_volume);
1687 NTSTATUS smb_vfs_call_snap_create(struct vfs_handle_struct *handle,
1688 TALLOC_CTX *mem_ctx,
1689 const char *base_volume,
1694 NTSTATUS smb_vfs_call_snap_delete(struct vfs_handle_struct *handle,
1695 TALLOC_CTX *mem_ctx,
1698 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
1699 struct files_struct *fsp,
1700 uint32_t security_info,
1701 TALLOC_CTX *mem_ctx,
1702 struct security_descriptor **ppdesc);
1703 NTSTATUS smb_vfs_call_get_nt_acl_at(struct vfs_handle_struct *handle,
1704 struct files_struct *dirfsp,
1705 const struct smb_filename *smb_fname,
1706 uint32_t security_info,
1707 TALLOC_CTX *mem_ctx,
1708 struct security_descriptor **ppdesc);
1709 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
1710 struct files_struct *fsp,
1711 uint32_t security_info_sent,
1712 const struct security_descriptor *psd);
1713 NTSTATUS smb_vfs_call_audit_file(struct vfs_handle_struct *handle,
1714 struct smb_filename *file,
1715 struct security_acl *sacl,
1716 uint32_t access_requested,
1717 uint32_t access_denied);
1718 int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle,
1719 const struct smb_filename *file,
1721 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
1722 struct files_struct *fsp,
1723 SMB_ACL_TYPE_T type,
1724 TALLOC_CTX *mem_ctx);
1725 int smb_vfs_call_sys_acl_blob_get_file(struct vfs_handle_struct *handle,
1726 const struct smb_filename *smb_fname,
1727 TALLOC_CTX *mem_ctx,
1728 char **blob_description,
1730 int smb_vfs_call_sys_acl_blob_get_fd(struct vfs_handle_struct *handle,
1731 struct files_struct *fsp,
1732 TALLOC_CTX *mem_ctx,
1733 char **blob_description,
1735 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
1736 struct files_struct *fsp,
1737 SMB_ACL_TYPE_T type,
1739 int smb_vfs_call_sys_acl_delete_def_fd(struct vfs_handle_struct *handle,
1740 struct files_struct *fsp);
1741 ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
1742 const struct smb_filename *smb_fname,
1746 struct tevent_req *smb_vfs_call_getxattrat_send(
1747 TALLOC_CTX *mem_ctx,
1748 struct tevent_context *ev,
1749 struct vfs_handle_struct *handle,
1750 files_struct *dir_fsp,
1751 const struct smb_filename *smb_fname,
1752 const char *xattr_name,
1754 ssize_t smb_vfs_call_getxattrat_recv(struct tevent_req *req,
1755 struct vfs_aio_state *aio_state,
1756 TALLOC_CTX *mem_ctx,
1757 uint8_t **xattr_value);
1758 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
1759 struct files_struct *fsp, const char *name,
1760 void *value, size_t size);
1761 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
1762 struct files_struct *fsp, char *list,
1764 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
1765 struct files_struct *fsp, const char *name);
1766 int smb_vfs_call_lsetxattr(struct vfs_handle_struct *handle, const char *path,
1767 const char *name, const void *value, size_t size,
1769 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
1770 struct files_struct *fsp, const char *name,
1771 const void *value, size_t size, int flags);
1772 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
1773 struct files_struct *fsp);
1774 NTSTATUS smb_vfs_call_durable_cookie(struct vfs_handle_struct *handle,
1775 struct files_struct *fsp,
1776 TALLOC_CTX *mem_ctx,
1778 NTSTATUS smb_vfs_call_durable_disconnect(struct vfs_handle_struct *handle,
1779 struct files_struct *fsp,
1780 const DATA_BLOB old_cookie,
1781 TALLOC_CTX *mem_ctx,
1782 DATA_BLOB *new_cookie);
1783 NTSTATUS smb_vfs_call_durable_reconnect(struct vfs_handle_struct *handle,
1784 struct smb_request *smb1req,
1785 struct smbXsrv_open *op,
1786 const DATA_BLOB old_cookie,
1787 TALLOC_CTX *mem_ctx,
1788 struct files_struct **fsp,
1789 DATA_BLOB *new_cookie);
1790 NTSTATUS smb_vfs_call_freaddir_attr(struct vfs_handle_struct *handle,
1791 struct files_struct *fsp,
1792 TALLOC_CTX *mem_ctx,
1793 struct readdir_attr_data **attr_data);
1795 NTSTATUS smb_register_vfs(int version, const char *name,
1796 const struct vfs_fn_pointers *fns);
1797 void *vfs_add_fsp_extension_notype(vfs_handle_struct *handle,
1798 files_struct *fsp, size_t ext_size,
1799 void (*destroy_fn)(void *p_data));
1800 void vfs_remove_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1801 void vfs_remove_all_fsp_extensions(struct files_struct *fsp);
1802 void *vfs_memctx_fsp_extension(vfs_handle_struct *handle,
1803 const struct files_struct *fsp);
1804 void *vfs_fetch_fsp_extension(vfs_handle_struct *handle, const struct files_struct *fsp);
1806 void smb_vfs_assert_all_fns(const struct vfs_fn_pointers* fns,
1807 const char *module);
1810 * Helper functions from source3/modules/vfs_not_implemented.c
1812 int vfs_not_implemented_connect(
1813 vfs_handle_struct *handle,
1814 const char *service,
1816 void vfs_not_implemented_disconnect(vfs_handle_struct *handle);
1817 uint64_t vfs_not_implemented_disk_free(vfs_handle_struct *handle,
1818 const struct smb_filename *smb_fname,
1822 int vfs_not_implemented_get_quota(vfs_handle_struct *handle,
1823 const struct smb_filename *smb_fname,
1824 enum SMB_QUOTA_TYPE qtype,
1826 SMB_DISK_QUOTA *dq);
1827 int vfs_not_implemented_set_quota(vfs_handle_struct *handle,
1828 enum SMB_QUOTA_TYPE qtype,
1829 unid_t id, SMB_DISK_QUOTA *dq);
1830 int vfs_not_implemented_get_shadow_copy_data(vfs_handle_struct *handle,
1832 struct shadow_copy_data *shadow_copy_data,
1834 int vfs_not_implemented_statvfs(struct vfs_handle_struct *handle,
1835 const struct smb_filename *smb_fname,
1836 struct vfs_statvfs_struct *statbuf);
1837 uint32_t vfs_not_implemented_fs_capabilities(struct vfs_handle_struct *handle,
1838 enum timestamp_set_resolution *p_ts_res);
1839 NTSTATUS vfs_not_implemented_get_dfs_referrals(struct vfs_handle_struct *handle,
1840 struct dfs_GetDFSReferral *r);
1841 NTSTATUS vfs_not_implemented_create_dfs_pathat(struct vfs_handle_struct *handle,
1842 struct files_struct *dirfsp,
1843 const struct smb_filename *smb_fname,
1844 const struct referral *reflist,
1845 size_t referral_count);
1846 NTSTATUS vfs_not_implemented_read_dfs_pathat(struct vfs_handle_struct *handle,
1847 TALLOC_CTX *mem_ctx,
1848 struct files_struct *dirfsp,
1849 struct smb_filename *smb_fname,
1850 struct referral **ppreflist,
1851 size_t *preferral_count);
1852 NTSTATUS vfs_not_implemented_snap_check_path(struct vfs_handle_struct *handle,
1853 TALLOC_CTX *mem_ctx,
1854 const char *service_path,
1855 char **base_volume);
1856 NTSTATUS vfs_not_implemented_snap_create(struct vfs_handle_struct *handle,
1857 TALLOC_CTX *mem_ctx,
1858 const char *base_volume,
1863 NTSTATUS vfs_not_implemented_snap_delete(struct vfs_handle_struct *handle,
1864 TALLOC_CTX *mem_ctx,
1867 DIR *vfs_not_implemented_fdopendir(vfs_handle_struct *handle, files_struct *fsp,
1868 const char *mask, uint32_t attr);
1869 struct dirent *vfs_not_implemented_readdir(vfs_handle_struct *handle,
1870 struct files_struct *dirfsp,
1872 SMB_STRUCT_STAT *sbuf);
1873 void vfs_not_implemented_seekdir(vfs_handle_struct *handle, DIR *dirp, long offset);
1874 long vfs_not_implemented_telldir(vfs_handle_struct *handle, DIR *dirp);
1875 void vfs_not_implemented_rewind_dir(vfs_handle_struct *handle, DIR *dirp);
1876 int vfs_not_implemented_mkdirat(vfs_handle_struct *handle,
1877 struct files_struct *dirfsp,
1878 const struct smb_filename *smb_fname,
1880 int vfs_not_implemented_closedir(vfs_handle_struct *handle, DIR *dir);
1881 int vfs_not_implemented_open(vfs_handle_struct *handle,
1882 struct smb_filename *smb_fname,
1883 files_struct *fsp, int flags, mode_t mode);
1884 int vfs_not_implemented_openat(vfs_handle_struct *handle,
1885 const struct files_struct *dirfsp,
1886 const struct smb_filename *smb_fname,
1887 struct files_struct *fsp,
1890 NTSTATUS vfs_not_implemented_create_file(struct vfs_handle_struct *handle,
1891 struct smb_request *req,
1892 struct smb_filename *smb_fname,
1893 uint32_t access_mask,
1894 uint32_t share_access,
1895 uint32_t create_disposition,
1896 uint32_t create_options,
1897 uint32_t file_attributes,
1898 uint32_t oplock_request,
1899 const struct smb2_lease *lease,
1900 uint64_t allocation_size,
1901 uint32_t private_flags,
1902 struct security_descriptor *sd,
1903 struct ea_list *ea_list,
1904 files_struct **result, int *pinfo,
1905 const struct smb2_create_blobs *in_context_blobs,
1906 struct smb2_create_blobs *out_context_blobs);
1907 int vfs_not_implemented_close_fn(vfs_handle_struct *handle, files_struct *fsp);
1908 ssize_t vfs_not_implemented_pread(vfs_handle_struct *handle, files_struct *fsp,
1909 void *data, size_t n, off_t offset);
1910 struct tevent_req *vfs_not_implemented_pread_send(struct vfs_handle_struct *handle,
1911 TALLOC_CTX *mem_ctx,
1912 struct tevent_context *ev,
1913 struct files_struct *fsp,
1914 void *data, size_t n, off_t offset);
1915 ssize_t vfs_not_implemented_pread_recv(struct tevent_req *req,
1916 struct vfs_aio_state *vfs_aio_state);
1917 ssize_t vfs_not_implemented_pwrite(vfs_handle_struct *handle, files_struct *fsp,
1918 const void *data, size_t n, off_t offset);
1919 struct tevent_req *vfs_not_implemented_pwrite_send(struct vfs_handle_struct *handle,
1920 TALLOC_CTX *mem_ctx,
1921 struct tevent_context *ev,
1922 struct files_struct *fsp,
1924 size_t n, off_t offset);
1925 ssize_t vfs_not_implemented_pwrite_recv(struct tevent_req *req,
1926 struct vfs_aio_state *vfs_aio_state);
1927 off_t vfs_not_implemented_lseek(vfs_handle_struct *handle, files_struct *fsp,
1928 off_t offset, int whence);
1929 ssize_t vfs_not_implemented_sendfile(vfs_handle_struct *handle, int tofd,
1930 files_struct *fromfsp, const DATA_BLOB *hdr,
1931 off_t offset, size_t n);
1932 ssize_t vfs_not_implemented_recvfile(vfs_handle_struct *handle, int fromfd,
1933 files_struct *tofsp, off_t offset, size_t n);
1934 int vfs_not_implemented_renameat(vfs_handle_struct *handle,
1935 files_struct *srcfsp,
1936 const struct smb_filename *smb_fname_src,
1937 files_struct *dstfsp,
1938 const struct smb_filename *smb_fname_dst);
1939 struct tevent_req *vfs_not_implemented_fsync_send(struct vfs_handle_struct *handle,
1940 TALLOC_CTX *mem_ctx,
1941 struct tevent_context *ev,
1942 struct files_struct *fsp);
1943 int vfs_not_implemented_fsync_recv(struct tevent_req *req,
1944 struct vfs_aio_state *vfs_aio_state);
1945 int vfs_not_implemented_stat(vfs_handle_struct *handle, struct smb_filename *smb_fname);
1946 int vfs_not_implemented_fstat(vfs_handle_struct *handle, files_struct *fsp,
1947 SMB_STRUCT_STAT *sbuf);
1948 int vfs_not_implemented_lstat(vfs_handle_struct *handle,
1949 struct smb_filename *smb_fname);
1950 uint64_t vfs_not_implemented_get_alloc_size(struct vfs_handle_struct *handle,
1951 struct files_struct *fsp,
1952 const SMB_STRUCT_STAT *sbuf);
1953 int vfs_not_implemented_unlinkat(vfs_handle_struct *handle,
1954 struct files_struct *dirfsp,
1955 const struct smb_filename *smb_fname,
1957 int vfs_not_implemented_fchmod(vfs_handle_struct *handle, files_struct *fsp,
1959 int vfs_not_implemented_fchown(vfs_handle_struct *handle, files_struct *fsp,
1960 uid_t uid, gid_t gid);
1961 int vfs_not_implemented_lchown(vfs_handle_struct *handle,
1962 const struct smb_filename *smb_fname,
1965 int vfs_not_implemented_chdir(vfs_handle_struct *handle,
1966 const struct smb_filename *smb_fname);
1967 struct smb_filename *vfs_not_implemented_getwd(vfs_handle_struct *handle,
1969 int vfs_not_implemented_ntimes(vfs_handle_struct *handle,
1970 const struct smb_filename *smb_fname,
1971 struct smb_file_time *ft);
1972 int vfs_not_implemented_fntimes(vfs_handle_struct *handle,
1974 struct smb_file_time *ft);
1975 int vfs_not_implemented_ftruncate(vfs_handle_struct *handle, files_struct *fsp,
1977 int vfs_not_implemented_fallocate(vfs_handle_struct *handle, files_struct *fsp,
1978 uint32_t mode, off_t offset, off_t len);
1979 bool vfs_not_implemented_lock(vfs_handle_struct *handle, files_struct *fsp, int op,
1980 off_t offset, off_t count, int type);
1981 int vfs_not_implemented_kernel_flock(struct vfs_handle_struct *handle,
1982 struct files_struct *fsp,
1983 uint32_t share_access, uint32_t access_mask);
1984 int vfs_not_implemented_fcntl(struct vfs_handle_struct *handle,
1985 struct files_struct *fsp, int cmd, va_list cmd_arg);
1986 int vfs_not_implemented_linux_setlease(struct vfs_handle_struct *handle,
1987 struct files_struct *fsp, int leasetype);
1988 bool vfs_not_implemented_getlock(vfs_handle_struct *handle, files_struct *fsp,
1989 off_t *poffset, off_t *pcount, int *ptype,
1991 int vfs_not_implemented_symlinkat(vfs_handle_struct *handle,
1992 const struct smb_filename *link_contents,
1993 struct files_struct *dirfsp,
1994 const struct smb_filename *new_smb_fname);
1995 int vfs_not_implemented_vfs_readlinkat(vfs_handle_struct *handle,
1996 const struct files_struct *dirfsp,
1997 const struct smb_filename *smb_fname,
2000 int vfs_not_implemented_linkat(vfs_handle_struct *handle,
2001 struct files_struct *srcfsp,
2002 const struct smb_filename *old_smb_fname,
2003 struct files_struct *dstfsp,
2004 const struct smb_filename *new_smb_fname,
2006 int vfs_not_implemented_mknodat(vfs_handle_struct *handle,
2007 struct files_struct *dirfsp,
2008 const struct smb_filename *smb_fname,
2011 struct smb_filename *vfs_not_implemented_realpath(vfs_handle_struct *handle,
2013 const struct smb_filename *smb_fname);
2014 int vfs_not_implemented_chflags(vfs_handle_struct *handle,
2015 const struct smb_filename *smb_fname,
2017 struct file_id vfs_not_implemented_file_id_create(vfs_handle_struct *handle,
2018 const SMB_STRUCT_STAT *sbuf);
2019 uint64_t vfs_not_implemented_fs_file_id(vfs_handle_struct *handle,
2020 const SMB_STRUCT_STAT *sbuf);
2021 struct tevent_req *vfs_not_implemented_offload_read_send(
2022 TALLOC_CTX *mem_ctx,
2023 struct tevent_context *ev,
2024 struct vfs_handle_struct *handle,
2025 struct files_struct *fsp,
2030 NTSTATUS vfs_not_implemented_offload_read_recv(struct tevent_req *req,
2031 struct vfs_handle_struct *handle,
2032 TALLOC_CTX *mem_ctx,
2033 DATA_BLOB *_token_blob);
2034 struct tevent_req *vfs_not_implemented_offload_write_send(
2035 struct vfs_handle_struct *handle,
2036 TALLOC_CTX *mem_ctx,
2037 struct tevent_context *ev,
2040 off_t transfer_offset,
2041 struct files_struct *dest_fsp,
2044 NTSTATUS vfs_not_implemented_offload_write_recv(struct vfs_handle_struct *handle,
2045 struct tevent_req *req,
2047 NTSTATUS vfs_not_implemented_fget_compression(struct vfs_handle_struct *handle,
2048 TALLOC_CTX *mem_ctx,
2049 struct files_struct *fsp,
2050 uint16_t *_compression_fmt);
2051 NTSTATUS vfs_not_implemented_set_compression(struct vfs_handle_struct *handle,
2052 TALLOC_CTX *mem_ctx,
2053 struct files_struct *fsp,
2054 uint16_t compression_fmt);
2055 NTSTATUS vfs_not_implemented_fstreaminfo(struct vfs_handle_struct *handle,
2056 struct files_struct *fsp,
2057 TALLOC_CTX *mem_ctx,
2058 unsigned int *num_streams,
2059 struct stream_struct **streams);
2060 int vfs_not_implemented_get_real_filename(struct vfs_handle_struct *handle,
2061 const struct smb_filename *path,
2063 TALLOC_CTX *mem_ctx,
2065 const char *vfs_not_implemented_connectpath(struct vfs_handle_struct *handle,
2066 const struct smb_filename *smb_fname);
2067 NTSTATUS vfs_not_implemented_brl_lock_windows(struct vfs_handle_struct *handle,
2068 struct byte_range_lock *br_lck,
2069 struct lock_struct *plock);
2070 bool vfs_not_implemented_brl_unlock_windows(struct vfs_handle_struct *handle,
2071 struct byte_range_lock *br_lck,
2072 const struct lock_struct *plock);
2073 bool vfs_not_implemented_strict_lock_check(struct vfs_handle_struct *handle,
2074 struct files_struct *fsp,
2075 struct lock_struct *plock);
2076 NTSTATUS vfs_not_implemented_translate_name(struct vfs_handle_struct *handle,
2077 const char *mapped_name,
2078 enum vfs_translate_direction direction,
2079 TALLOC_CTX *mem_ctx, char **pmapped_name);
2080 NTSTATUS vfs_not_implemented_parent_pathname(struct vfs_handle_struct *handle,
2081 TALLOC_CTX *mem_ctx,
2082 const struct smb_filename *smb_fname_in,
2083 struct smb_filename **parent_dir_out,
2084 struct smb_filename **atname_out);
2085 NTSTATUS vfs_not_implemented_fsctl(struct vfs_handle_struct *handle,
2086 struct files_struct *fsp,
2089 uint16_t req_flags, /* Needed for UNICODE ... */
2090 const uint8_t *_in_data,
2092 uint8_t **_out_data,
2093 uint32_t max_out_len, uint32_t *out_len);
2094 NTSTATUS vfs_not_implemented_freaddir_attr(struct vfs_handle_struct *handle,
2095 struct files_struct *dirfsp,
2096 TALLOC_CTX *mem_ctx,
2097 struct readdir_attr_data **pattr_data);
2098 struct tevent_req *vfs_not_implemented_get_dos_attributes_send(
2099 TALLOC_CTX *mem_ctx,
2100 struct tevent_context *ev,
2101 struct vfs_handle_struct *handle,
2102 files_struct *dir_fsp,
2103 struct smb_filename *smb_fname);
2104 NTSTATUS vfs_not_implemented_get_dos_attributes_recv(
2105 struct tevent_req *req,
2106 struct vfs_aio_state *aio_state,
2108 NTSTATUS vfs_not_implemented_fget_dos_attributes(struct vfs_handle_struct *handle,
2109 struct files_struct *fsp,
2111 NTSTATUS vfs_not_implemented_set_dos_attributes(struct vfs_handle_struct *handle,
2112 const struct smb_filename *smb_fname,
2114 NTSTATUS vfs_not_implemented_fset_dos_attributes(struct vfs_handle_struct *handle,
2115 struct files_struct *fsp,
2117 NTSTATUS vfs_not_implemented_fget_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
2118 uint32_t security_info,
2119 TALLOC_CTX *mem_ctx,
2120 struct security_descriptor **ppdesc);
2121 NTSTATUS vfs_not_implemented_get_nt_acl_at(vfs_handle_struct *handle,
2122 struct files_struct *dirfsp,
2123 const struct smb_filename *smb_fname,
2124 uint32_t security_info,
2125 TALLOC_CTX *mem_ctx,
2126 struct security_descriptor **ppdesc);
2127 NTSTATUS vfs_not_implemented_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
2128 uint32_t security_info_sent,
2129 const struct security_descriptor *psd);
2130 SMB_ACL_T vfs_not_implemented_sys_acl_get_fd(vfs_handle_struct *handle,
2132 SMB_ACL_TYPE_T type,
2133 TALLOC_CTX *mem_ctx);
2134 int vfs_not_implemented_sys_acl_blob_get_file(vfs_handle_struct *handle,
2135 const struct smb_filename *smb_fname,
2136 TALLOC_CTX *mem_ctx,
2137 char **blob_description,
2139 int vfs_not_implemented_sys_acl_blob_get_fd(vfs_handle_struct *handle,
2140 files_struct *fsp, TALLOC_CTX *mem_ctx,
2141 char **blob_description, DATA_BLOB *blob);
2142 int vfs_not_implemented_sys_acl_set_fd(vfs_handle_struct *handle,
2143 struct files_struct *fsp,
2144 SMB_ACL_TYPE_T type,
2146 int vfs_not_implemented_sys_acl_delete_def_fd(vfs_handle_struct *handle,
2148 ssize_t vfs_not_implemented_getxattr(vfs_handle_struct *handle,
2149 const struct smb_filename *smb_fname,
2153 struct tevent_req *vfs_not_implemented_getxattrat_send(
2154 TALLOC_CTX *mem_ctx,
2155 struct tevent_context *ev,
2156 struct vfs_handle_struct *handle,
2157 files_struct *dir_fsp,
2158 const struct smb_filename *smb_fname,
2159 const char *xattr_name,
2161 ssize_t vfs_not_implemented_getxattrat_recv(struct tevent_req *req,
2162 struct vfs_aio_state *aio_state,
2163 TALLOC_CTX *mem_ctx,
2164 uint8_t **xattr_value);
2165 ssize_t vfs_not_implemented_fgetxattr(vfs_handle_struct *handle,
2166 struct files_struct *fsp, const char *name,
2167 void *value, size_t size);
2168 ssize_t vfs_not_implemented_listxattr(vfs_handle_struct *handle,
2169 const struct smb_filename *smb_fname,
2172 ssize_t vfs_not_implemented_flistxattr(vfs_handle_struct *handle,
2173 struct files_struct *fsp, char *list,
2175 int vfs_not_implemented_fremovexattr(vfs_handle_struct *handle,
2176 struct files_struct *fsp, const char *name);
2177 int vfs_not_implemented_setxattr(vfs_handle_struct *handle,
2178 const struct smb_filename *smb_fname,
2183 int vfs_not_implemented_fsetxattr(vfs_handle_struct *handle, struct files_struct *fsp,
2184 const char *name, const void *value, size_t size,
2186 bool vfs_not_implemented_aio_force(struct vfs_handle_struct *handle,
2187 struct files_struct *fsp);
2188 NTSTATUS vfs_not_implemented_audit_file(struct vfs_handle_struct *handle,
2189 struct smb_filename *file,
2190 struct security_acl *sacl,
2191 uint32_t access_requested,
2192 uint32_t access_denied);
2193 NTSTATUS vfs_not_implemented_durable_cookie(struct vfs_handle_struct *handle,
2194 struct files_struct *fsp,
2195 TALLOC_CTX *mem_ctx,
2197 NTSTATUS vfs_not_implemented_durable_disconnect(struct vfs_handle_struct *handle,
2198 struct files_struct *fsp,
2199 const DATA_BLOB old_cookie,
2200 TALLOC_CTX *mem_ctx,
2201 DATA_BLOB *new_cookie);
2202 NTSTATUS vfs_not_implemented_durable_reconnect(struct vfs_handle_struct *handle,
2203 struct smb_request *smb1req,
2204 struct smbXsrv_open *op,
2205 const DATA_BLOB old_cookie,
2206 TALLOC_CTX *mem_ctx,
2207 struct files_struct **fsp,
2208 DATA_BLOB *new_cookie);