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
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/>.
22 This work was sponsored by Optifacio Software Services, Inc.
28 /* Avoid conflict with an AIX include file */
35 * As we're now (thanks Andrew ! :-) using file_structs and connection
36 * structs in the vfs - then anyone writing a vfs must include includes.h...
40 * This next constant specifies the version number of the VFS interface
41 * this smbd will load. Increment this if *ANY* changes are made to the
44 * If you change anything here, please also update modules/vfs_full_audit.c.
48 /* Changed to version 2 for CIFS UNIX extensions (mknod and link added). JRA. */
49 /* Changed to version 3 for POSIX acl extensions. JRA. */
50 /* Changed to version 4 for cascaded VFS interface. Alexander Bokovoy. */
51 /* Changed to version 5 for sendfile addition. JRA. */
52 /* Changed to version 6 for the new module system, fixed cascading and quota functions. --metze */
53 /* Changed to version 7 to include the get_nt_acl info parameter. JRA. */
54 /* Changed to version 8 includes EA calls. JRA. */
55 /* Changed to version 9 to include the get_shadow_data call. --metze */
56 /* Changed to version 10 to include pread/pwrite calls. */
57 /* Changed to version 11 to include seekdir/telldir/rewinddir calls. JRA */
58 /* Changed to version 12 to add mask and attributes to opendir(). JRA
59 Also include aio calls. JRA. */
60 /* Changed to version 13 as the internal structure of files_struct has changed. JRA */
61 /* Changed to version 14 as we had to change DIR to SMB_STRUCT_DIR. JRA */
62 /* Changed to version 15 as we added the statvfs call. JRA */
63 /* Changed to version 16 as we added the getlock call. JRA */
64 /* Changed to version 17 as we removed redundant connection_struct parameters. --jpeach */
65 /* Changed to version 18 to add fsp parameter to the open call -- jpeach
66 Also include kernel_flock call - jmcd */
67 /* Changed to version 19, kernel change notify has been merged
68 Also included linux setlease call - jmcd */
69 /* Changed to version 20, use ntimes call instead of utime (greater
70 * timestamp resolition. JRA. */
71 /* Changed to version21 to add chflags operation -- jpeach */
72 /* Changed to version22 to add lchown operation -- jra */
73 /* Leave at 22 - not yet released. But change set_nt_acl to return an NTSTATUS. jra. */
74 /* Leave at 22 - not yet released. Add file_id_create operation. --metze */
75 /* Leave at 22 - not yet released. Change all BOOL parameters (int) to bool. jra. */
76 /* Leave at 22 - not yet released. Added recvfile. */
77 /* Leave at 22 - not yet released. Change get_nt_acl to return NTSTATUS - vl */
78 /* Leave at 22 - not yet released. Change get_nt_acl to *not* take a
79 * files_struct. - obnox.*/
80 /* Leave at 22 - not yet released. Remove parameter fd from fget_nt_acl. - obnox */
81 /* Leave at 22 - not yet released. Remove parameter fd from gset_nt_acl. - obnox */
82 /* Leave at 22 - not yet released. Remove parameter fd from pread. - obnox */
83 /* Leave at 22 - not yet released. Remove parameter fd from pwrite. - obnox */
84 /* Leave at 22 - not yet released. Remove parameter fd from lseek. - obnox */
85 /* Leave at 22 - not yet released. Remove parameter fd from fsync. - obnox */
86 /* Leave at 22 - not yet released. Remove parameter fd from fstat. - obnox */
87 /* Leave at 22 - not yet released. Remove parameter fd from fchmod. - obnox */
88 /* Leave at 22 - not yet released. Remove parameter fd from fchown. - obnox */
89 /* Leave at 22 - not yet released. Remove parameter fd from ftruncate. - obnox */
90 /* Leave at 22 - not yet released. Remove parameter fd from lock. - obnox */
91 /* Leave at 22 - not yet released. Remove parameter fd from kernel_flock. - obnox */
92 /* Leave at 22 - not yet released. Remove parameter fd from linux_setlease. - obnox */
93 /* Leave at 22 - not yet released. Remove parameter fd from getlock. - obnox */
94 /* Leave at 22 - not yet released. Remove parameter fd from sys_acl_get_fd. - obnox */
95 /* Leave at 22 - not yet released. Remove parameter fd from fchmod_acl. - obnox */
96 /* Leave at 22 - not yet released. Remove parameter fd from sys_acl_set_fd. - obnox */
97 /* Leave at 22 - not yet released. Remove parameter fd from fgetxattr. - obnox */
98 /* Leave at 22 - not yet released. Remove parameter fd from flistxattr. - obnox */
99 /* Leave at 22 - not yet released. Remove parameter fd from fremovexattr. - obnox */
100 /* Leave at 22 - not yet released. Remove parameter fd from fsetxattr. - obnox */
101 /* Leave at 22 - not yet released. Remove parameter fd from aio_cancel. - obnox */
102 /* Leave at 22 - not yet released. Remove parameter fd from read. - obnox */
103 /* Leave at 22 - not yet released. Remove parameter fd from write. - obnox */
104 /* Leave at 22 - not yet released. Remove parameter fromfd from sendfile. - obnox */
105 /* Leave at 22 - not yet released. Remove parameter fromfd from recvfile. - obnox */
106 /* Leave at 22 - not yet released. Additional change: add operations for offline files -- ab */
107 /* Leave at 22 - not yet released. Add the streaminfo call. -- jpeach, vl */
108 /* Leave at 22 - not yet released. Remove parameter fd from close_fn. - obnox */
109 /* Changed to version 23 - remove set_nt_acl call. This can only be done via an
111 /* Changed to version 24 - make security descriptor const in fset_nt_acl. JRA. */
112 /* Changed to version 25 - Jelmer's change from SMB_BIG_UINT to uint64_t. */
113 /* Leave at 25 - not yet released. Add create_file call. -- tprouty. */
114 /* Leave at 25 - not yet released. Add create time to ntimes. -- tstecher. */
115 /* Leave at 25 - not yet released. Add get_alloc_size call. -- tprouty. */
116 /* Leave at 25 - not yet released. Add SMB_STRUCT_STAT to readdir. - sdann */
117 /* Leave at 25 - not yet released. Add init_search_op call. - sdann */
118 /* Leave at 25 - not yet released. Add locking calls. -- zkirsch. */
119 /* Leave at 25 - not yet released. Add strict locking calls. -- drichards. */
120 /* Changed to version 26 - Plumb struct smb_filename to SMB_VFS_CREATE_FILE,
121 SMB_VFS_OPEN, SMB_VFS_STAT, SMB_VFS_LSTAT,
122 SMB_VFS_RENAME, SMB_VFS_UNLINK. */
124 #define SMB_VFS_INTERFACE_VERSION 26
127 /* to bug old modules which are trying to compile with the old functions */
128 #define vfs_init __ERROR_please_port_this_module_to_SMB_VFS_INTERFACE_VERSION_8_donot_use_vfs_init_anymore(void) { __ERROR_please_port_this_module_to_SMB_VFS_INTERFACE_VERSION_8_donot_use_vfs_init_anymore };
129 #define lp_parm_string __ERROR_please_port_lp_parm_string_to_lp_parm_const_string_or_lp_parm_talloc_string { \
130 __ERROR_please_port_lp_parm_string_to_lp_parm_const_string_or_lp_parm_talloc_string };
131 #define lp_vfs_options __ERROR_please_donot_use_lp_vfs_options_anymore_use_lp_parm_xxxx_functions_instead { \
132 __ERROR_please_donot_use_lp_vfs_options_anymore_use_lp_parm_xxxx_functions_instead };
135 All intercepted VFS operations must be declared as static functions inside module source
136 in order to keep smbd namespace unpolluted. See source of audit, extd_audit, fake_perms and recycle
137 example VFS modules for more details.
140 /* VFS operations structure */
142 struct vfs_handle_struct;
143 struct connection_struct;
145 struct security_descriptor;
146 struct vfs_statvfs_struct;
149 struct smb_file_time;
150 struct blocking_lock_record;
154 Available VFS operations. These values must be in sync with vfs_ops struct
155 (struct vfs_fn_pointers and struct vfs_handle_pointers inside of struct vfs_ops).
156 In particular, if new operations are added to vfs_ops, appropriate constants
157 should be added to vfs_op_type so that order of them kept same as in vfs_ops.
160 typedef enum _vfs_op_type {
161 SMB_VFS_OP_NOOP = -1,
163 /* Disk operations */
165 SMB_VFS_OP_CONNECT = 0,
166 SMB_VFS_OP_DISCONNECT,
167 SMB_VFS_OP_DISK_FREE,
168 SMB_VFS_OP_GET_QUOTA,
169 SMB_VFS_OP_SET_QUOTA,
170 SMB_VFS_OP_GET_SHADOW_COPY_DATA,
172 SMB_VFS_OP_FS_CAPABILITIES,
174 /* Directory operations */
180 SMB_VFS_OP_REWINDDIR,
184 SMB_VFS_OP_INIT_SEARCH_OP,
186 /* File operations */
189 SMB_VFS_OP_CREATE_FILE,
203 SMB_VFS_OP_GET_ALLOC_SIZE,
213 SMB_VFS_OP_FTRUNCATE,
215 SMB_VFS_OP_KERNEL_FLOCK,
216 SMB_VFS_OP_LINUX_SETLEASE,
223 SMB_VFS_OP_NOTIFY_WATCH,
225 SMB_VFS_OP_FILE_ID_CREATE,
226 SMB_VFS_OP_STREAMINFO,
227 SMB_VFS_OP_GET_REAL_FILENAME,
228 SMB_VFS_OP_CONNECTPATH,
229 SMB_VFS_OP_BRL_LOCK_WINDOWS,
230 SMB_VFS_OP_BRL_UNLOCK_WINDOWS,
231 SMB_VFS_OP_BRL_CANCEL_WINDOWS,
232 SMB_VFS_OP_STRICT_LOCK,
233 SMB_VFS_OP_STRICT_UNLOCK,
235 /* NT ACL operations. */
237 SMB_VFS_OP_FGET_NT_ACL,
238 SMB_VFS_OP_GET_NT_ACL,
239 SMB_VFS_OP_FSET_NT_ACL,
241 /* POSIX ACL operations. */
243 SMB_VFS_OP_CHMOD_ACL,
244 SMB_VFS_OP_FCHMOD_ACL,
246 SMB_VFS_OP_SYS_ACL_GET_ENTRY,
247 SMB_VFS_OP_SYS_ACL_GET_TAG_TYPE,
248 SMB_VFS_OP_SYS_ACL_GET_PERMSET,
249 SMB_VFS_OP_SYS_ACL_GET_QUALIFIER,
250 SMB_VFS_OP_SYS_ACL_GET_FILE,
251 SMB_VFS_OP_SYS_ACL_GET_FD,
252 SMB_VFS_OP_SYS_ACL_CLEAR_PERMS,
253 SMB_VFS_OP_SYS_ACL_ADD_PERM,
254 SMB_VFS_OP_SYS_ACL_TO_TEXT,
255 SMB_VFS_OP_SYS_ACL_INIT,
256 SMB_VFS_OP_SYS_ACL_CREATE_ENTRY,
257 SMB_VFS_OP_SYS_ACL_SET_TAG_TYPE,
258 SMB_VFS_OP_SYS_ACL_SET_QUALIFIER,
259 SMB_VFS_OP_SYS_ACL_SET_PERMSET,
260 SMB_VFS_OP_SYS_ACL_VALID,
261 SMB_VFS_OP_SYS_ACL_SET_FILE,
262 SMB_VFS_OP_SYS_ACL_SET_FD,
263 SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
264 SMB_VFS_OP_SYS_ACL_GET_PERM,
265 SMB_VFS_OP_SYS_ACL_FREE_TEXT,
266 SMB_VFS_OP_SYS_ACL_FREE_ACL,
267 SMB_VFS_OP_SYS_ACL_FREE_QUALIFIER,
271 SMB_VFS_OP_LGETXATTR,
272 SMB_VFS_OP_FGETXATTR,
273 SMB_VFS_OP_LISTXATTR,
274 SMB_VFS_OP_LLISTXATTR,
275 SMB_VFS_OP_FLISTXATTR,
276 SMB_VFS_OP_REMOVEXATTR,
277 SMB_VFS_OP_LREMOVEXATTR,
278 SMB_VFS_OP_FREMOVEXATTR,
280 SMB_VFS_OP_LSETXATTR,
281 SMB_VFS_OP_FSETXATTR,
285 SMB_VFS_OP_AIO_WRITE,
286 SMB_VFS_OP_AIO_RETURN,
287 SMB_VFS_OP_AIO_CANCEL,
288 SMB_VFS_OP_AIO_ERROR,
289 SMB_VFS_OP_AIO_FSYNC,
290 SMB_VFS_OP_AIO_SUSPEND,
291 SMB_VFS_OP_AIO_FORCE,
293 /* offline operations */
294 SMB_VFS_OP_IS_OFFLINE,
295 SMB_VFS_OP_SET_OFFLINE,
297 /* This should always be last enum value */
303 Please keep vfs_op_type, struct vfs_fn_pointers and struct vfs_handles_pointers in sync.
306 struct vfs_fn_pointers {
307 /* Disk operations */
309 int (*connect_fn)(struct vfs_handle_struct *handle, const char *service, const char *user);
310 void (*disconnect)(struct vfs_handle_struct *handle);
311 uint64_t (*disk_free)(struct vfs_handle_struct *handle, const char *path, bool small_query, uint64_t *bsize,
312 uint64_t *dfree, uint64_t *dsize);
313 int (*get_quota)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
314 int (*set_quota)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
315 int (*get_shadow_copy_data)(struct vfs_handle_struct *handle, struct files_struct *fsp, SHADOW_COPY_DATA *shadow_copy_data, bool labels);
316 int (*statvfs)(struct vfs_handle_struct *handle, const char *path, struct vfs_statvfs_struct *statbuf);
317 uint32_t (*fs_capabilities)(struct vfs_handle_struct *handle);
319 /* Directory operations */
321 SMB_STRUCT_DIR *(*opendir)(struct vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attributes);
322 SMB_STRUCT_DIRENT *(*readdir)(struct vfs_handle_struct *handle,
323 SMB_STRUCT_DIR *dirp,
324 SMB_STRUCT_STAT *sbuf);
325 void (*seekdir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp, long offset);
326 long (*telldir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
327 void (*rewind_dir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
328 int (*mkdir)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
329 int (*rmdir)(struct vfs_handle_struct *handle, const char *path);
330 int (*closedir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dir);
331 void (*init_search_op)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
333 /* File operations */
335 int (*open)(struct vfs_handle_struct *handle,
336 struct smb_filename *smb_fname, files_struct *fsp,
337 int flags, mode_t mode);
338 NTSTATUS (*create_file)(struct vfs_handle_struct *handle,
339 struct smb_request *req,
340 uint16_t root_dir_fid,
341 struct smb_filename *smb_fname,
342 uint32_t access_mask,
343 uint32_t share_access,
344 uint32_t create_disposition,
345 uint32_t create_options,
346 uint32_t file_attributes,
347 uint32_t oplock_request,
348 uint64_t allocation_size,
349 struct security_descriptor *sd,
350 struct ea_list *ea_list,
351 files_struct **result,
353 int (*close_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
354 ssize_t (*vfs_read)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n);
355 ssize_t (*pread)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n, SMB_OFF_T offset);
356 ssize_t (*write)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n);
357 ssize_t (*pwrite)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n, SMB_OFF_T offset);
358 SMB_OFF_T (*lseek)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_OFF_T offset, int whence);
359 ssize_t (*sendfile)(struct vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *header, SMB_OFF_T offset, size_t count);
360 ssize_t (*recvfile)(struct vfs_handle_struct *handle, int fromfd, files_struct *tofsp, SMB_OFF_T offset, size_t count);
361 int (*rename)(struct vfs_handle_struct *handle,
362 const struct smb_filename *smb_fname_src,
363 const struct smb_filename *smb_fname_dst);
364 int (*fsync)(struct vfs_handle_struct *handle, struct files_struct *fsp);
365 int (*stat)(struct vfs_handle_struct *handle, struct smb_filename *smb_fname);
366 int (*fstat)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
367 int (*lstat)(struct vfs_handle_struct *handle, struct smb_filename *smb_filename);
368 uint64_t (*get_alloc_size)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_STAT *sbuf);
369 int (*unlink)(struct vfs_handle_struct *handle,
370 const struct smb_filename *smb_fname);
371 int (*chmod)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
372 int (*fchmod)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
373 int (*chown)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
374 int (*fchown)(struct vfs_handle_struct *handle, struct files_struct *fsp, uid_t uid, gid_t gid);
375 int (*lchown)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
376 int (*chdir)(struct vfs_handle_struct *handle, const char *path);
377 char *(*getwd)(struct vfs_handle_struct *handle, char *buf);
378 int (*ntimes)(struct vfs_handle_struct *handle, const char *path, struct smb_file_time *ft);
379 int (*ftruncate)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_OFF_T offset);
380 bool (*lock)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_OFF_T offset, SMB_OFF_T count, int type);
381 int (*kernel_flock)(struct vfs_handle_struct *handle, struct files_struct *fsp, uint32 share_mode);
382 int (*linux_setlease)(struct vfs_handle_struct *handle, struct files_struct *fsp, int leasetype);
383 bool (*getlock)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid);
384 int (*symlink)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
385 int (*vfs_readlink)(struct vfs_handle_struct *handle, const char *path, char *buf, size_t bufsiz);
386 int (*link)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
387 int (*mknod)(struct vfs_handle_struct *handle, const char *path, mode_t mode, SMB_DEV_T dev);
388 char *(*realpath)(struct vfs_handle_struct *handle, const char *path, char *resolved_path);
389 NTSTATUS (*notify_watch)(struct vfs_handle_struct *handle,
390 struct sys_notify_context *ctx,
391 struct notify_entry *e,
392 void (*callback)(struct sys_notify_context *ctx,
394 struct notify_event *ev),
395 void *private_data, void *handle_p);
396 int (*chflags)(struct vfs_handle_struct *handle, const char *path, unsigned int flags);
397 struct file_id (*file_id_create)(struct vfs_handle_struct *handle,
398 const SMB_STRUCT_STAT *sbuf);
400 NTSTATUS (*streaminfo)(struct vfs_handle_struct *handle,
401 struct files_struct *fsp,
404 unsigned int *num_streams,
405 struct stream_struct **streams);
407 int (*get_real_filename)(struct vfs_handle_struct *handle,
413 const char *(*connectpath)(struct vfs_handle_struct *handle,
414 const char *filename);
416 NTSTATUS (*brl_lock_windows)(struct vfs_handle_struct *handle,
417 struct byte_range_lock *br_lck,
418 struct lock_struct *plock,
420 struct blocking_lock_record *blr);
422 bool (*brl_unlock_windows)(struct vfs_handle_struct *handle,
423 struct messaging_context *msg_ctx,
424 struct byte_range_lock *br_lck,
425 const struct lock_struct *plock);
427 bool (*brl_cancel_windows)(struct vfs_handle_struct *handle,
428 struct byte_range_lock *br_lck,
429 struct lock_struct *plock,
430 struct blocking_lock_record *blr);
432 bool (*strict_lock)(struct vfs_handle_struct *handle,
433 struct files_struct *fsp,
434 struct lock_struct *plock);
436 void (*strict_unlock)(struct vfs_handle_struct *handle,
437 struct files_struct *fsp,
438 struct lock_struct *plock);
440 /* NT ACL operations. */
442 NTSTATUS (*fget_nt_acl)(struct vfs_handle_struct *handle,
443 struct files_struct *fsp,
444 uint32 security_info,
445 struct security_descriptor **ppdesc);
446 NTSTATUS (*get_nt_acl)(struct vfs_handle_struct *handle,
448 uint32 security_info,
449 struct security_descriptor **ppdesc);
450 NTSTATUS (*fset_nt_acl)(struct vfs_handle_struct *handle,
451 struct files_struct *fsp,
452 uint32 security_info_sent,
453 const struct security_descriptor *psd);
455 /* POSIX ACL operations. */
457 int (*chmod_acl)(struct vfs_handle_struct *handle, const char *name, mode_t mode);
458 int (*fchmod_acl)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
460 int (*sys_acl_get_entry)(struct vfs_handle_struct *handle, SMB_ACL_T theacl, int entry_id, SMB_ACL_ENTRY_T *entry_p);
461 int (*sys_acl_get_tag_type)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_TAG_T *tag_type_p);
462 int (*sys_acl_get_permset)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_PERMSET_T *permset_p);
463 void * (*sys_acl_get_qualifier)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d);
464 SMB_ACL_T (*sys_acl_get_file)(struct vfs_handle_struct *handle, const char *path_p, SMB_ACL_TYPE_T type);
465 SMB_ACL_T (*sys_acl_get_fd)(struct vfs_handle_struct *handle, struct files_struct *fsp);
466 int (*sys_acl_clear_perms)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset);
467 int (*sys_acl_add_perm)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
468 char * (*sys_acl_to_text)(struct vfs_handle_struct *handle, SMB_ACL_T theacl, ssize_t *plen);
469 SMB_ACL_T (*sys_acl_init)(struct vfs_handle_struct *handle, int count);
470 int (*sys_acl_create_entry)(struct vfs_handle_struct *handle, SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry);
471 int (*sys_acl_set_tag_type)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_TAG_T tagtype);
472 int (*sys_acl_set_qualifier)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, void *qual);
473 int (*sys_acl_set_permset)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_PERMSET_T permset);
474 int (*sys_acl_valid)(struct vfs_handle_struct *handle, SMB_ACL_T theacl );
475 int (*sys_acl_set_file)(struct vfs_handle_struct *handle, const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl);
476 int (*sys_acl_set_fd)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_ACL_T theacl);
477 int (*sys_acl_delete_def_file)(struct vfs_handle_struct *handle, const char *path);
478 int (*sys_acl_get_perm)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
479 int (*sys_acl_free_text)(struct vfs_handle_struct *handle, char *text);
480 int (*sys_acl_free_acl)(struct vfs_handle_struct *handle, SMB_ACL_T posix_acl);
481 int (*sys_acl_free_qualifier)(struct vfs_handle_struct *handle, void *qualifier, SMB_ACL_TAG_T tagtype);
484 ssize_t (*getxattr)(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size);
485 ssize_t (*lgetxattr)(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size);
486 ssize_t (*fgetxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size);
487 ssize_t (*listxattr)(struct vfs_handle_struct *handle, const char *path, char *list, size_t size);
488 ssize_t (*llistxattr)(struct vfs_handle_struct *handle, const char *path, char *list, size_t size);
489 ssize_t (*flistxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size);
490 int (*removexattr)(struct vfs_handle_struct *handle, const char *path, const char *name);
491 int (*lremovexattr)(struct vfs_handle_struct *handle, const char *path, const char *name);
492 int (*fremovexattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name);
493 int (*setxattr)(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags);
494 int (*lsetxattr)(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags);
495 int (*fsetxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags);
498 int (*aio_read)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
499 int (*aio_write)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
500 ssize_t (*aio_return_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
501 int (*aio_cancel)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
502 int (*aio_error_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
503 int (*aio_fsync)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_STRUCT_AIOCB *aiocb);
504 int (*aio_suspend)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_AIOCB * const aiocb[], int n, const struct timespec *timeout);
505 bool (*aio_force)(struct vfs_handle_struct *handle, struct files_struct *fsp);
507 /* offline operations */
508 bool (*is_offline)(struct vfs_handle_struct *handle, const char *path, SMB_STRUCT_STAT *sbuf);
509 int (*set_offline)(struct vfs_handle_struct *handle, const char *path);
512 struct vfs_handles_pointers {
513 /* Disk operations */
515 struct vfs_handle_struct *connect_hnd;
516 struct vfs_handle_struct *disconnect;
517 struct vfs_handle_struct *disk_free;
518 struct vfs_handle_struct *get_quota;
519 struct vfs_handle_struct *set_quota;
520 struct vfs_handle_struct *get_shadow_copy_data;
521 struct vfs_handle_struct *statvfs;
522 struct vfs_handle_struct *fs_capabilities;
524 /* Directory operations */
526 struct vfs_handle_struct *opendir;
527 struct vfs_handle_struct *readdir;
528 struct vfs_handle_struct *seekdir;
529 struct vfs_handle_struct *telldir;
530 struct vfs_handle_struct *rewind_dir;
531 struct vfs_handle_struct *mkdir;
532 struct vfs_handle_struct *rmdir;
533 struct vfs_handle_struct *closedir;
534 struct vfs_handle_struct *init_search_op;
536 /* File operations */
538 struct vfs_handle_struct *open;
539 struct vfs_handle_struct *create_file;
540 struct vfs_handle_struct *close_hnd;
541 struct vfs_handle_struct *vfs_read;
542 struct vfs_handle_struct *pread;
543 struct vfs_handle_struct *write;
544 struct vfs_handle_struct *pwrite;
545 struct vfs_handle_struct *lseek;
546 struct vfs_handle_struct *sendfile;
547 struct vfs_handle_struct *recvfile;
548 struct vfs_handle_struct *rename;
549 struct vfs_handle_struct *fsync;
550 struct vfs_handle_struct *stat;
551 struct vfs_handle_struct *fstat;
552 struct vfs_handle_struct *lstat;
553 struct vfs_handle_struct *get_alloc_size;
554 struct vfs_handle_struct *unlink;
555 struct vfs_handle_struct *chmod;
556 struct vfs_handle_struct *fchmod;
557 struct vfs_handle_struct *chown;
558 struct vfs_handle_struct *fchown;
559 struct vfs_handle_struct *lchown;
560 struct vfs_handle_struct *chdir;
561 struct vfs_handle_struct *getwd;
562 struct vfs_handle_struct *ntimes;
563 struct vfs_handle_struct *ftruncate;
564 struct vfs_handle_struct *lock;
565 struct vfs_handle_struct *kernel_flock;
566 struct vfs_handle_struct *linux_setlease;
567 struct vfs_handle_struct *getlock;
568 struct vfs_handle_struct *symlink;
569 struct vfs_handle_struct *vfs_readlink;
570 struct vfs_handle_struct *link;
571 struct vfs_handle_struct *mknod;
572 struct vfs_handle_struct *realpath;
573 struct vfs_handle_struct *notify_watch;
574 struct vfs_handle_struct *chflags;
575 struct vfs_handle_struct *file_id_create;
576 struct vfs_handle_struct *streaminfo;
577 struct vfs_handle_struct *get_real_filename;
578 struct vfs_handle_struct *connectpath;
579 struct vfs_handle_struct *brl_lock_windows;
580 struct vfs_handle_struct *brl_unlock_windows;
581 struct vfs_handle_struct *brl_cancel_windows;
582 struct vfs_handle_struct *strict_lock;
583 struct vfs_handle_struct *strict_unlock;
585 /* NT ACL operations. */
587 struct vfs_handle_struct *fget_nt_acl;
588 struct vfs_handle_struct *get_nt_acl;
589 struct vfs_handle_struct *fset_nt_acl;
591 /* POSIX ACL operations. */
593 struct vfs_handle_struct *chmod_acl;
594 struct vfs_handle_struct *fchmod_acl;
596 struct vfs_handle_struct *sys_acl_get_entry;
597 struct vfs_handle_struct *sys_acl_get_tag_type;
598 struct vfs_handle_struct *sys_acl_get_permset;
599 struct vfs_handle_struct *sys_acl_get_qualifier;
600 struct vfs_handle_struct *sys_acl_get_file;
601 struct vfs_handle_struct *sys_acl_get_fd;
602 struct vfs_handle_struct *sys_acl_clear_perms;
603 struct vfs_handle_struct *sys_acl_add_perm;
604 struct vfs_handle_struct *sys_acl_to_text;
605 struct vfs_handle_struct *sys_acl_init;
606 struct vfs_handle_struct *sys_acl_create_entry;
607 struct vfs_handle_struct *sys_acl_set_tag_type;
608 struct vfs_handle_struct *sys_acl_set_qualifier;
609 struct vfs_handle_struct *sys_acl_set_permset;
610 struct vfs_handle_struct *sys_acl_valid;
611 struct vfs_handle_struct *sys_acl_set_file;
612 struct vfs_handle_struct *sys_acl_set_fd;
613 struct vfs_handle_struct *sys_acl_delete_def_file;
614 struct vfs_handle_struct *sys_acl_get_perm;
615 struct vfs_handle_struct *sys_acl_free_text;
616 struct vfs_handle_struct *sys_acl_free_acl;
617 struct vfs_handle_struct *sys_acl_free_qualifier;
620 struct vfs_handle_struct *getxattr;
621 struct vfs_handle_struct *lgetxattr;
622 struct vfs_handle_struct *fgetxattr;
623 struct vfs_handle_struct *listxattr;
624 struct vfs_handle_struct *llistxattr;
625 struct vfs_handle_struct *flistxattr;
626 struct vfs_handle_struct *removexattr;
627 struct vfs_handle_struct *lremovexattr;
628 struct vfs_handle_struct *fremovexattr;
629 struct vfs_handle_struct *setxattr;
630 struct vfs_handle_struct *lsetxattr;
631 struct vfs_handle_struct *fsetxattr;
634 struct vfs_handle_struct *aio_read;
635 struct vfs_handle_struct *aio_write;
636 struct vfs_handle_struct *aio_return;
637 struct vfs_handle_struct *aio_cancel;
638 struct vfs_handle_struct *aio_error;
639 struct vfs_handle_struct *aio_fsync;
640 struct vfs_handle_struct *aio_suspend;
641 struct vfs_handle_struct *aio_force;
643 /* offline operations */
644 struct vfs_handle_struct *is_offline;
645 struct vfs_handle_struct *set_offline;
650 Possible VFS operation layers (per-operation)
652 These values are used by VFS subsystem when building vfs_ops for connection
653 from multiple VFS modules. Internally, Samba differentiates only opaque and
654 transparent layers at this process. Other types are used for providing better
655 diagnosing facilities.
657 Most modules will provide transparent layers. Opaque layer is for modules
658 which implement actual file system calls (like DB-based VFS). For example,
659 default POSIX VFS which is built in into Samba is an opaque VFS module.
661 Other layer types (audit, splitter, scanner) were designed to provide different
662 degree of transparency and for diagnosing VFS module behaviour.
664 Each module can implement several layers at the same time provided that only
665 one layer is used per each operation.
669 typedef enum _vfs_op_layer {
670 SMB_VFS_LAYER_NOOP = -1, /* - For using in VFS module to indicate end of array */
671 /* of operations description */
672 SMB_VFS_LAYER_OPAQUE = 0, /* - Final level, does not call anything beyond itself */
673 SMB_VFS_LAYER_TRANSPARENT, /* - Normal operation, calls underlying layer after */
674 /* possibly changing passed data */
675 SMB_VFS_LAYER_LOGGER, /* - Logs data, calls underlying layer, logging may not */
677 SMB_VFS_LAYER_SPLITTER, /* - Splits operation, calls underlying layer _and_ own facility, */
678 /* then combines result */
679 SMB_VFS_LAYER_SCANNER /* - Checks data and possibly initiates additional */
680 /* file activity like logging to files _inside_ samba VFS */
684 VFS operation description. Each VFS module registers an array of vfs_op_tuple to VFS subsystem,
685 which describes all operations this module is willing to intercept.
686 VFS subsystem initializes then the conn->vfs_ops and conn->vfs_opaque_ops structs
687 using this information.
690 typedef struct vfs_op_tuple {
697 typedef struct vfs_handle_struct {
698 struct vfs_handle_struct *next, *prev;
700 struct vfs_ops vfs_next;
701 struct connection_struct *conn;
703 void (*free_data)(void **data);
707 typedef struct vfs_statvfs_struct {
708 /* For undefined recommended transfer size return -1 in that field */
709 uint32 OptimalTransferSize; /* bsize on some os, iosize on other os */
713 The next three fields are in terms of the block size.
714 (above). If block size is unknown, 4096 would be a
715 reasonable block size for a server to report.
716 Note that returning the blocks/blocksavail removes need
717 to make a second call (to QFSInfo level 0x103 to get this info.
718 UserBlockAvail is typically less than or equal to BlocksAvail,
719 if no distinction is made return the same value in each.
722 uint64_t TotalBlocks;
723 uint64_t BlocksAvail; /* bfree */
724 uint64_t UserBlocksAvail; /* bavail */
726 /* For undefined Node fields or FSID return -1 */
727 uint64_t TotalFileNodes;
728 uint64_t FreeFileNodes;
729 uint64_t FsIdentifier; /* fsid */
730 /* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
731 /* NB flags can come from FILE_SYSTEM_DEVICE_INFO call */
734 } vfs_statvfs_struct;
736 /* Add a new FSP extension of the given type. Returns a pointer to the
739 #define VFS_ADD_FSP_EXTENSION(handle, fsp, type, destroy_fn) \
740 vfs_add_fsp_extension_notype(handle, (fsp), sizeof(type), (destroy_fn))
742 /* Return a pointer to the existing FSP extension data. */
743 #define VFS_FETCH_FSP_EXTENSION(handle, fsp) \
744 vfs_fetch_fsp_extension(handle, (fsp))
746 /* Return the talloc context associated with an FSP extension. */
747 #define VFS_MEMCTX_FSP_EXTENSION(handle, fsp) \
748 vfs_memctx_fsp_extension(handle, (fsp))
750 /* Remove and destroy an FSP extension. */
751 #define VFS_REMOVE_FSP_EXTENSION(handle, fsp) \
752 vfs_remove_fsp_extension((handle), (fsp))
754 #define SMB_VFS_HANDLE_GET_DATA(handle, datap, type, ret) { \
755 if (!(handle)||((datap=(type *)(handle)->data)==NULL)) { \
756 DEBUG(0,("%s() failed to get vfs_handle->data!\n",FUNCTION_MACRO)); \
761 #define SMB_VFS_HANDLE_SET_DATA(handle, datap, free_fn, type, ret) { \
763 DEBUG(0,("%s() failed to set handle->data!\n",FUNCTION_MACRO)); \
766 if ((handle)->free_data) { \
767 (handle)->free_data(&(handle)->data); \
769 (handle)->data = (void *)datap; \
770 (handle)->free_data = free_fn; \
774 #define SMB_VFS_HANDLE_FREE_DATA(handle) { \
775 if ((handle) && (handle)->free_data) { \
776 (handle)->free_data(&(handle)->data); \
780 /* Check whether module-specific data handle was already allocated or not */
781 #define SMB_VFS_HANDLE_TEST_DATA(handle) ( !(handle) || !(handle)->data ? False : True )
783 #define SMB_VFS_OP(x) ((void *) x)
785 #define DEFAULT_VFS_MODULE_NAME "/[Default VFS]/"
787 #include "vfs_macros.h"