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,
123 #define SMB_VFS_INTERFACE_VERSION 26
126 /* to bug old modules which are trying to compile with the old functions */
127 #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 };
128 #define lp_parm_string __ERROR_please_port_lp_parm_string_to_lp_parm_const_string_or_lp_parm_talloc_string { \
129 __ERROR_please_port_lp_parm_string_to_lp_parm_const_string_or_lp_parm_talloc_string };
130 #define lp_vfs_options __ERROR_please_donot_use_lp_vfs_options_anymore_use_lp_parm_xxxx_functions_instead { \
131 __ERROR_please_donot_use_lp_vfs_options_anymore_use_lp_parm_xxxx_functions_instead };
134 All intercepted VFS operations must be declared as static functions inside module source
135 in order to keep smbd namespace unpolluted. See source of audit, extd_audit, fake_perms and recycle
136 example VFS modules for more details.
139 /* VFS operations structure */
141 struct vfs_handle_struct;
142 struct connection_struct;
144 struct security_descriptor;
145 struct vfs_statvfs_struct;
148 struct smb_file_time;
149 struct blocking_lock_record;
153 Available VFS operations. These values must be in sync with vfs_ops struct
154 (struct vfs_fn_pointers and struct vfs_handle_pointers inside of struct vfs_ops).
155 In particular, if new operations are added to vfs_ops, appropriate constants
156 should be added to vfs_op_type so that order of them kept same as in vfs_ops.
159 typedef enum _vfs_op_type {
160 SMB_VFS_OP_NOOP = -1,
162 /* Disk operations */
164 SMB_VFS_OP_CONNECT = 0,
165 SMB_VFS_OP_DISCONNECT,
166 SMB_VFS_OP_DISK_FREE,
167 SMB_VFS_OP_GET_QUOTA,
168 SMB_VFS_OP_SET_QUOTA,
169 SMB_VFS_OP_GET_SHADOW_COPY_DATA,
171 SMB_VFS_OP_FS_CAPABILITIES,
173 /* Directory operations */
179 SMB_VFS_OP_REWINDDIR,
183 SMB_VFS_OP_INIT_SEARCH_OP,
185 /* File operations */
188 SMB_VFS_OP_CREATE_FILE,
202 SMB_VFS_OP_GET_ALLOC_SIZE,
212 SMB_VFS_OP_FTRUNCATE,
214 SMB_VFS_OP_KERNEL_FLOCK,
215 SMB_VFS_OP_LINUX_SETLEASE,
222 SMB_VFS_OP_NOTIFY_WATCH,
224 SMB_VFS_OP_FILE_ID_CREATE,
225 SMB_VFS_OP_STREAMINFO,
226 SMB_VFS_OP_GET_REAL_FILENAME,
227 SMB_VFS_OP_CONNECTPATH,
228 SMB_VFS_OP_BRL_LOCK_WINDOWS,
229 SMB_VFS_OP_BRL_UNLOCK_WINDOWS,
230 SMB_VFS_OP_BRL_CANCEL_WINDOWS,
231 SMB_VFS_OP_STRICT_LOCK,
232 SMB_VFS_OP_STRICT_UNLOCK,
234 /* NT ACL operations. */
236 SMB_VFS_OP_FGET_NT_ACL,
237 SMB_VFS_OP_GET_NT_ACL,
238 SMB_VFS_OP_FSET_NT_ACL,
240 /* POSIX ACL operations. */
242 SMB_VFS_OP_CHMOD_ACL,
243 SMB_VFS_OP_FCHMOD_ACL,
245 SMB_VFS_OP_SYS_ACL_GET_ENTRY,
246 SMB_VFS_OP_SYS_ACL_GET_TAG_TYPE,
247 SMB_VFS_OP_SYS_ACL_GET_PERMSET,
248 SMB_VFS_OP_SYS_ACL_GET_QUALIFIER,
249 SMB_VFS_OP_SYS_ACL_GET_FILE,
250 SMB_VFS_OP_SYS_ACL_GET_FD,
251 SMB_VFS_OP_SYS_ACL_CLEAR_PERMS,
252 SMB_VFS_OP_SYS_ACL_ADD_PERM,
253 SMB_VFS_OP_SYS_ACL_TO_TEXT,
254 SMB_VFS_OP_SYS_ACL_INIT,
255 SMB_VFS_OP_SYS_ACL_CREATE_ENTRY,
256 SMB_VFS_OP_SYS_ACL_SET_TAG_TYPE,
257 SMB_VFS_OP_SYS_ACL_SET_QUALIFIER,
258 SMB_VFS_OP_SYS_ACL_SET_PERMSET,
259 SMB_VFS_OP_SYS_ACL_VALID,
260 SMB_VFS_OP_SYS_ACL_SET_FILE,
261 SMB_VFS_OP_SYS_ACL_SET_FD,
262 SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
263 SMB_VFS_OP_SYS_ACL_GET_PERM,
264 SMB_VFS_OP_SYS_ACL_FREE_TEXT,
265 SMB_VFS_OP_SYS_ACL_FREE_ACL,
266 SMB_VFS_OP_SYS_ACL_FREE_QUALIFIER,
270 SMB_VFS_OP_LGETXATTR,
271 SMB_VFS_OP_FGETXATTR,
272 SMB_VFS_OP_LISTXATTR,
273 SMB_VFS_OP_LLISTXATTR,
274 SMB_VFS_OP_FLISTXATTR,
275 SMB_VFS_OP_REMOVEXATTR,
276 SMB_VFS_OP_LREMOVEXATTR,
277 SMB_VFS_OP_FREMOVEXATTR,
279 SMB_VFS_OP_LSETXATTR,
280 SMB_VFS_OP_FSETXATTR,
284 SMB_VFS_OP_AIO_WRITE,
285 SMB_VFS_OP_AIO_RETURN,
286 SMB_VFS_OP_AIO_CANCEL,
287 SMB_VFS_OP_AIO_ERROR,
288 SMB_VFS_OP_AIO_FSYNC,
289 SMB_VFS_OP_AIO_SUSPEND,
290 SMB_VFS_OP_AIO_FORCE,
292 /* offline operations */
293 SMB_VFS_OP_IS_OFFLINE,
294 SMB_VFS_OP_SET_OFFLINE,
296 /* This should always be last enum value */
302 Please keep vfs_op_type, struct vfs_fn_pointers and struct vfs_handles_pointers in sync.
305 struct vfs_fn_pointers {
306 /* Disk operations */
308 int (*connect_fn)(struct vfs_handle_struct *handle, const char *service, const char *user);
309 void (*disconnect)(struct vfs_handle_struct *handle);
310 uint64_t (*disk_free)(struct vfs_handle_struct *handle, const char *path, bool small_query, uint64_t *bsize,
311 uint64_t *dfree, uint64_t *dsize);
312 int (*get_quota)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
313 int (*set_quota)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
314 int (*get_shadow_copy_data)(struct vfs_handle_struct *handle, struct files_struct *fsp, SHADOW_COPY_DATA *shadow_copy_data, bool labels);
315 int (*statvfs)(struct vfs_handle_struct *handle, const char *path, struct vfs_statvfs_struct *statbuf);
316 uint32_t (*fs_capabilities)(struct vfs_handle_struct *handle);
318 /* Directory operations */
320 SMB_STRUCT_DIR *(*opendir)(struct vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attributes);
321 SMB_STRUCT_DIRENT *(*readdir)(struct vfs_handle_struct *handle,
322 SMB_STRUCT_DIR *dirp,
323 SMB_STRUCT_STAT *sbuf);
324 void (*seekdir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp, long offset);
325 long (*telldir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
326 void (*rewind_dir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
327 int (*mkdir)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
328 int (*rmdir)(struct vfs_handle_struct *handle, const char *path);
329 int (*closedir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dir);
330 void (*init_search_op)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
332 /* File operations */
334 int (*open)(struct vfs_handle_struct *handle,
335 struct smb_filename *smb_fname, files_struct *fsp,
336 int flags, mode_t mode);
337 NTSTATUS (*create_file)(struct vfs_handle_struct *handle,
338 struct smb_request *req,
339 uint16_t root_dir_fid,
340 struct smb_filename *smb_fname,
341 uint32_t access_mask,
342 uint32_t share_access,
343 uint32_t create_disposition,
344 uint32_t create_options,
345 uint32_t file_attributes,
346 uint32_t oplock_request,
347 uint64_t allocation_size,
348 struct security_descriptor *sd,
349 struct ea_list *ea_list,
350 files_struct **result,
352 int (*close_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
353 ssize_t (*vfs_read)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n);
354 ssize_t (*pread)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n, SMB_OFF_T offset);
355 ssize_t (*write)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n);
356 ssize_t (*pwrite)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n, SMB_OFF_T offset);
357 SMB_OFF_T (*lseek)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_OFF_T offset, int whence);
358 ssize_t (*sendfile)(struct vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *header, SMB_OFF_T offset, size_t count);
359 ssize_t (*recvfile)(struct vfs_handle_struct *handle, int fromfd, files_struct *tofsp, SMB_OFF_T offset, size_t count);
360 int (*rename)(struct vfs_handle_struct *handle, const char *oldname, const char *newname);
361 int (*fsync)(struct vfs_handle_struct *handle, struct files_struct *fsp);
362 int (*stat)(struct vfs_handle_struct *handle, const char *fname, SMB_STRUCT_STAT *sbuf);
363 int (*fstat)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
364 int (*lstat)(struct vfs_handle_struct *handle, const char *path, SMB_STRUCT_STAT *sbuf);
365 uint64_t (*get_alloc_size)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_STAT *sbuf);
366 int (*unlink)(struct vfs_handle_struct *handle, const char *path);
367 int (*chmod)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
368 int (*fchmod)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
369 int (*chown)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
370 int (*fchown)(struct vfs_handle_struct *handle, struct files_struct *fsp, uid_t uid, gid_t gid);
371 int (*lchown)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
372 int (*chdir)(struct vfs_handle_struct *handle, const char *path);
373 char *(*getwd)(struct vfs_handle_struct *handle, char *buf);
374 int (*ntimes)(struct vfs_handle_struct *handle, const char *path, struct smb_file_time *ft);
375 int (*ftruncate)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_OFF_T offset);
376 bool (*lock)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_OFF_T offset, SMB_OFF_T count, int type);
377 int (*kernel_flock)(struct vfs_handle_struct *handle, struct files_struct *fsp, uint32 share_mode);
378 int (*linux_setlease)(struct vfs_handle_struct *handle, struct files_struct *fsp, int leasetype);
379 bool (*getlock)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid);
380 int (*symlink)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
381 int (*vfs_readlink)(struct vfs_handle_struct *handle, const char *path, char *buf, size_t bufsiz);
382 int (*link)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
383 int (*mknod)(struct vfs_handle_struct *handle, const char *path, mode_t mode, SMB_DEV_T dev);
384 char *(*realpath)(struct vfs_handle_struct *handle, const char *path, char *resolved_path);
385 NTSTATUS (*notify_watch)(struct vfs_handle_struct *handle,
386 struct sys_notify_context *ctx,
387 struct notify_entry *e,
388 void (*callback)(struct sys_notify_context *ctx,
390 struct notify_event *ev),
391 void *private_data, void *handle_p);
392 int (*chflags)(struct vfs_handle_struct *handle, const char *path, unsigned int flags);
393 struct file_id (*file_id_create)(struct vfs_handle_struct *handle,
394 const SMB_STRUCT_STAT *sbuf);
396 NTSTATUS (*streaminfo)(struct vfs_handle_struct *handle,
397 struct files_struct *fsp,
400 unsigned int *num_streams,
401 struct stream_struct **streams);
403 int (*get_real_filename)(struct vfs_handle_struct *handle,
409 const char *(*connectpath)(struct vfs_handle_struct *handle,
410 const char *filename);
412 NTSTATUS (*brl_lock_windows)(struct vfs_handle_struct *handle,
413 struct byte_range_lock *br_lck,
414 struct lock_struct *plock,
416 struct blocking_lock_record *blr);
418 bool (*brl_unlock_windows)(struct vfs_handle_struct *handle,
419 struct messaging_context *msg_ctx,
420 struct byte_range_lock *br_lck,
421 const struct lock_struct *plock);
423 bool (*brl_cancel_windows)(struct vfs_handle_struct *handle,
424 struct byte_range_lock *br_lck,
425 struct lock_struct *plock,
426 struct blocking_lock_record *blr);
428 bool (*strict_lock)(struct vfs_handle_struct *handle,
429 struct files_struct *fsp,
430 struct lock_struct *plock);
432 void (*strict_unlock)(struct vfs_handle_struct *handle,
433 struct files_struct *fsp,
434 struct lock_struct *plock);
436 /* NT ACL operations. */
438 NTSTATUS (*fget_nt_acl)(struct vfs_handle_struct *handle,
439 struct files_struct *fsp,
440 uint32 security_info,
441 struct security_descriptor **ppdesc);
442 NTSTATUS (*get_nt_acl)(struct vfs_handle_struct *handle,
444 uint32 security_info,
445 struct security_descriptor **ppdesc);
446 NTSTATUS (*fset_nt_acl)(struct vfs_handle_struct *handle,
447 struct files_struct *fsp,
448 uint32 security_info_sent,
449 const struct security_descriptor *psd);
451 /* POSIX ACL operations. */
453 int (*chmod_acl)(struct vfs_handle_struct *handle, const char *name, mode_t mode);
454 int (*fchmod_acl)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
456 int (*sys_acl_get_entry)(struct vfs_handle_struct *handle, SMB_ACL_T theacl, int entry_id, SMB_ACL_ENTRY_T *entry_p);
457 int (*sys_acl_get_tag_type)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_TAG_T *tag_type_p);
458 int (*sys_acl_get_permset)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_PERMSET_T *permset_p);
459 void * (*sys_acl_get_qualifier)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d);
460 SMB_ACL_T (*sys_acl_get_file)(struct vfs_handle_struct *handle, const char *path_p, SMB_ACL_TYPE_T type);
461 SMB_ACL_T (*sys_acl_get_fd)(struct vfs_handle_struct *handle, struct files_struct *fsp);
462 int (*sys_acl_clear_perms)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset);
463 int (*sys_acl_add_perm)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
464 char * (*sys_acl_to_text)(struct vfs_handle_struct *handle, SMB_ACL_T theacl, ssize_t *plen);
465 SMB_ACL_T (*sys_acl_init)(struct vfs_handle_struct *handle, int count);
466 int (*sys_acl_create_entry)(struct vfs_handle_struct *handle, SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry);
467 int (*sys_acl_set_tag_type)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_TAG_T tagtype);
468 int (*sys_acl_set_qualifier)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, void *qual);
469 int (*sys_acl_set_permset)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_PERMSET_T permset);
470 int (*sys_acl_valid)(struct vfs_handle_struct *handle, SMB_ACL_T theacl );
471 int (*sys_acl_set_file)(struct vfs_handle_struct *handle, const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl);
472 int (*sys_acl_set_fd)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_ACL_T theacl);
473 int (*sys_acl_delete_def_file)(struct vfs_handle_struct *handle, const char *path);
474 int (*sys_acl_get_perm)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
475 int (*sys_acl_free_text)(struct vfs_handle_struct *handle, char *text);
476 int (*sys_acl_free_acl)(struct vfs_handle_struct *handle, SMB_ACL_T posix_acl);
477 int (*sys_acl_free_qualifier)(struct vfs_handle_struct *handle, void *qualifier, SMB_ACL_TAG_T tagtype);
480 ssize_t (*getxattr)(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size);
481 ssize_t (*lgetxattr)(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size);
482 ssize_t (*fgetxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size);
483 ssize_t (*listxattr)(struct vfs_handle_struct *handle, const char *path, char *list, size_t size);
484 ssize_t (*llistxattr)(struct vfs_handle_struct *handle, const char *path, char *list, size_t size);
485 ssize_t (*flistxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size);
486 int (*removexattr)(struct vfs_handle_struct *handle, const char *path, const char *name);
487 int (*lremovexattr)(struct vfs_handle_struct *handle, const char *path, const char *name);
488 int (*fremovexattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name);
489 int (*setxattr)(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags);
490 int (*lsetxattr)(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags);
491 int (*fsetxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags);
494 int (*aio_read)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
495 int (*aio_write)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
496 ssize_t (*aio_return_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
497 int (*aio_cancel)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
498 int (*aio_error_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
499 int (*aio_fsync)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_STRUCT_AIOCB *aiocb);
500 int (*aio_suspend)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_AIOCB * const aiocb[], int n, const struct timespec *timeout);
501 bool (*aio_force)(struct vfs_handle_struct *handle, struct files_struct *fsp);
503 /* offline operations */
504 bool (*is_offline)(struct vfs_handle_struct *handle, const char *path, SMB_STRUCT_STAT *sbuf);
505 int (*set_offline)(struct vfs_handle_struct *handle, const char *path);
508 struct vfs_handles_pointers {
509 /* Disk operations */
511 struct vfs_handle_struct *connect_hnd;
512 struct vfs_handle_struct *disconnect;
513 struct vfs_handle_struct *disk_free;
514 struct vfs_handle_struct *get_quota;
515 struct vfs_handle_struct *set_quota;
516 struct vfs_handle_struct *get_shadow_copy_data;
517 struct vfs_handle_struct *statvfs;
518 struct vfs_handle_struct *fs_capabilities;
520 /* Directory operations */
522 struct vfs_handle_struct *opendir;
523 struct vfs_handle_struct *readdir;
524 struct vfs_handle_struct *seekdir;
525 struct vfs_handle_struct *telldir;
526 struct vfs_handle_struct *rewind_dir;
527 struct vfs_handle_struct *mkdir;
528 struct vfs_handle_struct *rmdir;
529 struct vfs_handle_struct *closedir;
530 struct vfs_handle_struct *init_search_op;
532 /* File operations */
534 struct vfs_handle_struct *open;
535 struct vfs_handle_struct *create_file;
536 struct vfs_handle_struct *close_hnd;
537 struct vfs_handle_struct *vfs_read;
538 struct vfs_handle_struct *pread;
539 struct vfs_handle_struct *write;
540 struct vfs_handle_struct *pwrite;
541 struct vfs_handle_struct *lseek;
542 struct vfs_handle_struct *sendfile;
543 struct vfs_handle_struct *recvfile;
544 struct vfs_handle_struct *rename;
545 struct vfs_handle_struct *fsync;
546 struct vfs_handle_struct *stat;
547 struct vfs_handle_struct *fstat;
548 struct vfs_handle_struct *lstat;
549 struct vfs_handle_struct *get_alloc_size;
550 struct vfs_handle_struct *unlink;
551 struct vfs_handle_struct *chmod;
552 struct vfs_handle_struct *fchmod;
553 struct vfs_handle_struct *chown;
554 struct vfs_handle_struct *fchown;
555 struct vfs_handle_struct *lchown;
556 struct vfs_handle_struct *chdir;
557 struct vfs_handle_struct *getwd;
558 struct vfs_handle_struct *ntimes;
559 struct vfs_handle_struct *ftruncate;
560 struct vfs_handle_struct *lock;
561 struct vfs_handle_struct *kernel_flock;
562 struct vfs_handle_struct *linux_setlease;
563 struct vfs_handle_struct *getlock;
564 struct vfs_handle_struct *symlink;
565 struct vfs_handle_struct *vfs_readlink;
566 struct vfs_handle_struct *link;
567 struct vfs_handle_struct *mknod;
568 struct vfs_handle_struct *realpath;
569 struct vfs_handle_struct *notify_watch;
570 struct vfs_handle_struct *chflags;
571 struct vfs_handle_struct *file_id_create;
572 struct vfs_handle_struct *streaminfo;
573 struct vfs_handle_struct *get_real_filename;
574 struct vfs_handle_struct *connectpath;
575 struct vfs_handle_struct *brl_lock_windows;
576 struct vfs_handle_struct *brl_unlock_windows;
577 struct vfs_handle_struct *brl_cancel_windows;
578 struct vfs_handle_struct *strict_lock;
579 struct vfs_handle_struct *strict_unlock;
581 /* NT ACL operations. */
583 struct vfs_handle_struct *fget_nt_acl;
584 struct vfs_handle_struct *get_nt_acl;
585 struct vfs_handle_struct *fset_nt_acl;
587 /* POSIX ACL operations. */
589 struct vfs_handle_struct *chmod_acl;
590 struct vfs_handle_struct *fchmod_acl;
592 struct vfs_handle_struct *sys_acl_get_entry;
593 struct vfs_handle_struct *sys_acl_get_tag_type;
594 struct vfs_handle_struct *sys_acl_get_permset;
595 struct vfs_handle_struct *sys_acl_get_qualifier;
596 struct vfs_handle_struct *sys_acl_get_file;
597 struct vfs_handle_struct *sys_acl_get_fd;
598 struct vfs_handle_struct *sys_acl_clear_perms;
599 struct vfs_handle_struct *sys_acl_add_perm;
600 struct vfs_handle_struct *sys_acl_to_text;
601 struct vfs_handle_struct *sys_acl_init;
602 struct vfs_handle_struct *sys_acl_create_entry;
603 struct vfs_handle_struct *sys_acl_set_tag_type;
604 struct vfs_handle_struct *sys_acl_set_qualifier;
605 struct vfs_handle_struct *sys_acl_set_permset;
606 struct vfs_handle_struct *sys_acl_valid;
607 struct vfs_handle_struct *sys_acl_set_file;
608 struct vfs_handle_struct *sys_acl_set_fd;
609 struct vfs_handle_struct *sys_acl_delete_def_file;
610 struct vfs_handle_struct *sys_acl_get_perm;
611 struct vfs_handle_struct *sys_acl_free_text;
612 struct vfs_handle_struct *sys_acl_free_acl;
613 struct vfs_handle_struct *sys_acl_free_qualifier;
616 struct vfs_handle_struct *getxattr;
617 struct vfs_handle_struct *lgetxattr;
618 struct vfs_handle_struct *fgetxattr;
619 struct vfs_handle_struct *listxattr;
620 struct vfs_handle_struct *llistxattr;
621 struct vfs_handle_struct *flistxattr;
622 struct vfs_handle_struct *removexattr;
623 struct vfs_handle_struct *lremovexattr;
624 struct vfs_handle_struct *fremovexattr;
625 struct vfs_handle_struct *setxattr;
626 struct vfs_handle_struct *lsetxattr;
627 struct vfs_handle_struct *fsetxattr;
630 struct vfs_handle_struct *aio_read;
631 struct vfs_handle_struct *aio_write;
632 struct vfs_handle_struct *aio_return;
633 struct vfs_handle_struct *aio_cancel;
634 struct vfs_handle_struct *aio_error;
635 struct vfs_handle_struct *aio_fsync;
636 struct vfs_handle_struct *aio_suspend;
637 struct vfs_handle_struct *aio_force;
639 /* offline operations */
640 struct vfs_handle_struct *is_offline;
641 struct vfs_handle_struct *set_offline;
646 Possible VFS operation layers (per-operation)
648 These values are used by VFS subsystem when building vfs_ops for connection
649 from multiple VFS modules. Internally, Samba differentiates only opaque and
650 transparent layers at this process. Other types are used for providing better
651 diagnosing facilities.
653 Most modules will provide transparent layers. Opaque layer is for modules
654 which implement actual file system calls (like DB-based VFS). For example,
655 default POSIX VFS which is built in into Samba is an opaque VFS module.
657 Other layer types (audit, splitter, scanner) were designed to provide different
658 degree of transparency and for diagnosing VFS module behaviour.
660 Each module can implement several layers at the same time provided that only
661 one layer is used per each operation.
665 typedef enum _vfs_op_layer {
666 SMB_VFS_LAYER_NOOP = -1, /* - For using in VFS module to indicate end of array */
667 /* of operations description */
668 SMB_VFS_LAYER_OPAQUE = 0, /* - Final level, does not call anything beyond itself */
669 SMB_VFS_LAYER_TRANSPARENT, /* - Normal operation, calls underlying layer after */
670 /* possibly changing passed data */
671 SMB_VFS_LAYER_LOGGER, /* - Logs data, calls underlying layer, logging may not */
673 SMB_VFS_LAYER_SPLITTER, /* - Splits operation, calls underlying layer _and_ own facility, */
674 /* then combines result */
675 SMB_VFS_LAYER_SCANNER /* - Checks data and possibly initiates additional */
676 /* file activity like logging to files _inside_ samba VFS */
680 VFS operation description. Each VFS module registers an array of vfs_op_tuple to VFS subsystem,
681 which describes all operations this module is willing to intercept.
682 VFS subsystem initializes then the conn->vfs_ops and conn->vfs_opaque_ops structs
683 using this information.
686 typedef struct vfs_op_tuple {
693 typedef struct vfs_handle_struct {
694 struct vfs_handle_struct *next, *prev;
696 struct vfs_ops vfs_next;
697 struct connection_struct *conn;
699 void (*free_data)(void **data);
703 typedef struct vfs_statvfs_struct {
704 /* For undefined recommended transfer size return -1 in that field */
705 uint32 OptimalTransferSize; /* bsize on some os, iosize on other os */
709 The next three fields are in terms of the block size.
710 (above). If block size is unknown, 4096 would be a
711 reasonable block size for a server to report.
712 Note that returning the blocks/blocksavail removes need
713 to make a second call (to QFSInfo level 0x103 to get this info.
714 UserBlockAvail is typically less than or equal to BlocksAvail,
715 if no distinction is made return the same value in each.
718 uint64_t TotalBlocks;
719 uint64_t BlocksAvail; /* bfree */
720 uint64_t UserBlocksAvail; /* bavail */
722 /* For undefined Node fields or FSID return -1 */
723 uint64_t TotalFileNodes;
724 uint64_t FreeFileNodes;
725 uint64_t FsIdentifier; /* fsid */
726 /* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
727 /* NB flags can come from FILE_SYSTEM_DEVICE_INFO call */
730 } vfs_statvfs_struct;
732 /* Add a new FSP extension of the given type. Returns a pointer to the
735 #define VFS_ADD_FSP_EXTENSION(handle, fsp, type, destroy_fn) \
736 vfs_add_fsp_extension_notype(handle, (fsp), sizeof(type), (destroy_fn))
738 /* Return a pointer to the existing FSP extension data. */
739 #define VFS_FETCH_FSP_EXTENSION(handle, fsp) \
740 vfs_fetch_fsp_extension(handle, (fsp))
742 /* Return the talloc context associated with an FSP extension. */
743 #define VFS_MEMCTX_FSP_EXTENSION(handle, fsp) \
744 vfs_memctx_fsp_extension(handle, (fsp))
746 /* Remove and destroy an FSP extension. */
747 #define VFS_REMOVE_FSP_EXTENSION(handle, fsp) \
748 vfs_remove_fsp_extension((handle), (fsp))
750 #define SMB_VFS_HANDLE_GET_DATA(handle, datap, type, ret) { \
751 if (!(handle)||((datap=(type *)(handle)->data)==NULL)) { \
752 DEBUG(0,("%s() failed to get vfs_handle->data!\n",FUNCTION_MACRO)); \
757 #define SMB_VFS_HANDLE_SET_DATA(handle, datap, free_fn, type, ret) { \
759 DEBUG(0,("%s() failed to set handle->data!\n",FUNCTION_MACRO)); \
762 if ((handle)->free_data) { \
763 (handle)->free_data(&(handle)->data); \
765 (handle)->data = (void *)datap; \
766 (handle)->free_data = free_fn; \
770 #define SMB_VFS_HANDLE_FREE_DATA(handle) { \
771 if ((handle) && (handle)->free_data) { \
772 (handle)->free_data(&(handle)->data); \
776 /* Check whether module-specific data handle was already allocated or not */
777 #define SMB_VFS_HANDLE_TEST_DATA(handle) ( !(handle) || !(handle)->data ? False : True )
779 #define SMB_VFS_OP(x) ((void *) x)
781 #define DEFAULT_VFS_MODULE_NAME "/[Default VFS]/"
783 #include "vfs_macros.h"