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