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
112 #define SMB_VFS_INTERFACE_VERSION 23
115 /* to bug old modules which are trying to compile with the old functions */
116 #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 };
117 #define lp_parm_string __ERROR_please_port_lp_parm_string_to_lp_parm_const_string_or_lp_parm_talloc_string { \
118 __ERROR_please_port_lp_parm_string_to_lp_parm_const_string_or_lp_parm_talloc_string };
119 #define lp_vfs_options __ERROR_please_donot_use_lp_vfs_options_anymore_use_lp_parm_xxxx_functions_instead { \
120 __ERROR_please_donot_use_lp_vfs_options_anymore_use_lp_parm_xxxx_functions_instead };
123 All intercepted VFS operations must be declared as static functions inside module source
124 in order to keep smbd namespace unpolluted. See source of audit, extd_audit, fake_perms and recycle
125 example VFS modules for more details.
128 /* VFS operations structure */
130 struct vfs_handle_struct;
131 struct connection_struct;
133 struct security_descriptor;
134 struct vfs_statvfs_struct;
137 Available VFS operations. These values must be in sync with vfs_ops struct
138 (struct vfs_fn_pointers and struct vfs_handle_pointers inside of struct vfs_ops).
139 In particular, if new operations are added to vfs_ops, appropriate constants
140 should be added to vfs_op_type so that order of them kept same as in vfs_ops.
143 typedef enum _vfs_op_type {
144 SMB_VFS_OP_NOOP = -1,
146 /* Disk operations */
148 SMB_VFS_OP_CONNECT = 0,
149 SMB_VFS_OP_DISCONNECT,
150 SMB_VFS_OP_DISK_FREE,
151 SMB_VFS_OP_GET_QUOTA,
152 SMB_VFS_OP_SET_QUOTA,
153 SMB_VFS_OP_GET_SHADOW_COPY_DATA,
155 SMB_VFS_OP_FS_CAPABILITIES,
157 /* Directory operations */
163 SMB_VFS_OP_REWINDDIR,
168 /* File operations */
193 SMB_VFS_OP_FTRUNCATE,
195 SMB_VFS_OP_KERNEL_FLOCK,
196 SMB_VFS_OP_LINUX_SETLEASE,
203 SMB_VFS_OP_NOTIFY_WATCH,
205 SMB_VFS_OP_FILE_ID_CREATE,
206 SMB_VFS_OP_STREAMINFO,
208 /* NT ACL operations. */
210 SMB_VFS_OP_FGET_NT_ACL,
211 SMB_VFS_OP_GET_NT_ACL,
212 SMB_VFS_OP_FSET_NT_ACL,
214 /* POSIX ACL operations. */
216 SMB_VFS_OP_CHMOD_ACL,
217 SMB_VFS_OP_FCHMOD_ACL,
219 SMB_VFS_OP_SYS_ACL_GET_ENTRY,
220 SMB_VFS_OP_SYS_ACL_GET_TAG_TYPE,
221 SMB_VFS_OP_SYS_ACL_GET_PERMSET,
222 SMB_VFS_OP_SYS_ACL_GET_QUALIFIER,
223 SMB_VFS_OP_SYS_ACL_GET_FILE,
224 SMB_VFS_OP_SYS_ACL_GET_FD,
225 SMB_VFS_OP_SYS_ACL_CLEAR_PERMS,
226 SMB_VFS_OP_SYS_ACL_ADD_PERM,
227 SMB_VFS_OP_SYS_ACL_TO_TEXT,
228 SMB_VFS_OP_SYS_ACL_INIT,
229 SMB_VFS_OP_SYS_ACL_CREATE_ENTRY,
230 SMB_VFS_OP_SYS_ACL_SET_TAG_TYPE,
231 SMB_VFS_OP_SYS_ACL_SET_QUALIFIER,
232 SMB_VFS_OP_SYS_ACL_SET_PERMSET,
233 SMB_VFS_OP_SYS_ACL_VALID,
234 SMB_VFS_OP_SYS_ACL_SET_FILE,
235 SMB_VFS_OP_SYS_ACL_SET_FD,
236 SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
237 SMB_VFS_OP_SYS_ACL_GET_PERM,
238 SMB_VFS_OP_SYS_ACL_FREE_TEXT,
239 SMB_VFS_OP_SYS_ACL_FREE_ACL,
240 SMB_VFS_OP_SYS_ACL_FREE_QUALIFIER,
244 SMB_VFS_OP_LGETXATTR,
245 SMB_VFS_OP_FGETXATTR,
246 SMB_VFS_OP_LISTXATTR,
247 SMB_VFS_OP_LLISTXATTR,
248 SMB_VFS_OP_FLISTXATTR,
249 SMB_VFS_OP_REMOVEXATTR,
250 SMB_VFS_OP_LREMOVEXATTR,
251 SMB_VFS_OP_FREMOVEXATTR,
253 SMB_VFS_OP_LSETXATTR,
254 SMB_VFS_OP_FSETXATTR,
258 SMB_VFS_OP_AIO_WRITE,
259 SMB_VFS_OP_AIO_RETURN,
260 SMB_VFS_OP_AIO_CANCEL,
261 SMB_VFS_OP_AIO_ERROR,
262 SMB_VFS_OP_AIO_FSYNC,
263 SMB_VFS_OP_AIO_SUSPEND,
264 SMB_VFS_OP_AIO_FORCE,
266 /* offline operations */
267 SMB_VFS_OP_IS_OFFLINE,
268 SMB_VFS_OP_SET_OFFLINE,
270 /* This should always be last enum value */
276 Please keep vfs_op_type, struct vfs_fn_pointers and struct vfs_handles_pointers in sync.
279 struct vfs_fn_pointers {
280 /* Disk operations */
282 int (*connect_fn)(struct vfs_handle_struct *handle, const char *service, const char *user);
283 void (*disconnect)(struct vfs_handle_struct *handle);
284 SMB_BIG_UINT (*disk_free)(struct vfs_handle_struct *handle, const char *path, bool small_query, SMB_BIG_UINT *bsize,
285 SMB_BIG_UINT *dfree, SMB_BIG_UINT *dsize);
286 int (*get_quota)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
287 int (*set_quota)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
288 int (*get_shadow_copy_data)(struct vfs_handle_struct *handle, struct files_struct *fsp, SHADOW_COPY_DATA *shadow_copy_data, bool labels);
289 int (*statvfs)(struct vfs_handle_struct *handle, const char *path, struct vfs_statvfs_struct *statbuf);
290 uint32_t (*fs_capabilities)(struct vfs_handle_struct *handle);
292 /* Directory operations */
294 SMB_STRUCT_DIR *(*opendir)(struct vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attributes);
295 SMB_STRUCT_DIRENT *(*readdir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
296 void (*seekdir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp, long offset);
297 long (*telldir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
298 void (*rewind_dir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
299 int (*mkdir)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
300 int (*rmdir)(struct vfs_handle_struct *handle, const char *path);
301 int (*closedir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dir);
303 /* File operations */
305 int (*open)(struct vfs_handle_struct *handle, const char *fname, files_struct *fsp, int flags, mode_t mode);
306 int (*close_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
307 ssize_t (*vfs_read)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n);
308 ssize_t (*pread)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n, SMB_OFF_T offset);
309 ssize_t (*write)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n);
310 ssize_t (*pwrite)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n, SMB_OFF_T offset);
311 SMB_OFF_T (*lseek)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_OFF_T offset, int whence);
312 ssize_t (*sendfile)(struct vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *header, SMB_OFF_T offset, size_t count);
313 ssize_t (*recvfile)(struct vfs_handle_struct *handle, int fromfd, files_struct *tofsp, SMB_OFF_T offset, size_t count);
314 int (*rename)(struct vfs_handle_struct *handle, const char *oldname, const char *newname);
315 int (*fsync)(struct vfs_handle_struct *handle, struct files_struct *fsp);
316 int (*stat)(struct vfs_handle_struct *handle, const char *fname, SMB_STRUCT_STAT *sbuf);
317 int (*fstat)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
318 int (*lstat)(struct vfs_handle_struct *handle, const char *path, SMB_STRUCT_STAT *sbuf);
319 int (*unlink)(struct vfs_handle_struct *handle, const char *path);
320 int (*chmod)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
321 int (*fchmod)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
322 int (*chown)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
323 int (*fchown)(struct vfs_handle_struct *handle, struct files_struct *fsp, uid_t uid, gid_t gid);
324 int (*lchown)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
325 int (*chdir)(struct vfs_handle_struct *handle, const char *path);
326 char *(*getwd)(struct vfs_handle_struct *handle, char *buf);
327 int (*ntimes)(struct vfs_handle_struct *handle, const char *path, const struct timespec ts[2]);
328 int (*ftruncate)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_OFF_T offset);
329 bool (*lock)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_OFF_T offset, SMB_OFF_T count, int type);
330 int (*kernel_flock)(struct vfs_handle_struct *handle, struct files_struct *fsp, uint32 share_mode);
331 int (*linux_setlease)(struct vfs_handle_struct *handle, struct files_struct *fsp, int leasetype);
332 bool (*getlock)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid);
333 int (*symlink)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
334 int (*vfs_readlink)(struct vfs_handle_struct *handle, const char *path, char *buf, size_t bufsiz);
335 int (*link)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
336 int (*mknod)(struct vfs_handle_struct *handle, const char *path, mode_t mode, SMB_DEV_T dev);
337 char *(*realpath)(struct vfs_handle_struct *handle, const char *path, char *resolved_path);
338 NTSTATUS (*notify_watch)(struct vfs_handle_struct *handle,
339 struct sys_notify_context *ctx,
340 struct notify_entry *e,
341 void (*callback)(struct sys_notify_context *ctx,
343 struct notify_event *ev),
344 void *private_data, void *handle_p);
345 int (*chflags)(struct vfs_handle_struct *handle, const char *path, unsigned int flags);
346 struct file_id (*file_id_create)(struct vfs_handle_struct *handle, SMB_DEV_T dev, SMB_INO_T inode);
348 NTSTATUS (*streaminfo)(struct vfs_handle_struct *handle,
349 struct files_struct *fsp,
352 unsigned int *num_streams,
353 struct stream_struct **streams);
355 /* NT ACL operations. */
357 NTSTATUS (*fget_nt_acl)(struct vfs_handle_struct *handle,
358 struct files_struct *fsp,
359 uint32 security_info,
360 struct security_descriptor **ppdesc);
361 NTSTATUS (*get_nt_acl)(struct vfs_handle_struct *handle,
363 uint32 security_info,
364 struct security_descriptor **ppdesc);
365 NTSTATUS (*fset_nt_acl)(struct vfs_handle_struct *handle,
366 struct files_struct *fsp,
367 uint32 security_info_sent,
368 struct security_descriptor *psd);
370 /* POSIX ACL operations. */
372 int (*chmod_acl)(struct vfs_handle_struct *handle, const char *name, mode_t mode);
373 int (*fchmod_acl)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
375 int (*sys_acl_get_entry)(struct vfs_handle_struct *handle, SMB_ACL_T theacl, int entry_id, SMB_ACL_ENTRY_T *entry_p);
376 int (*sys_acl_get_tag_type)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_TAG_T *tag_type_p);
377 int (*sys_acl_get_permset)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_PERMSET_T *permset_p);
378 void * (*sys_acl_get_qualifier)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d);
379 SMB_ACL_T (*sys_acl_get_file)(struct vfs_handle_struct *handle, const char *path_p, SMB_ACL_TYPE_T type);
380 SMB_ACL_T (*sys_acl_get_fd)(struct vfs_handle_struct *handle, struct files_struct *fsp);
381 int (*sys_acl_clear_perms)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset);
382 int (*sys_acl_add_perm)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
383 char * (*sys_acl_to_text)(struct vfs_handle_struct *handle, SMB_ACL_T theacl, ssize_t *plen);
384 SMB_ACL_T (*sys_acl_init)(struct vfs_handle_struct *handle, int count);
385 int (*sys_acl_create_entry)(struct vfs_handle_struct *handle, SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry);
386 int (*sys_acl_set_tag_type)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_TAG_T tagtype);
387 int (*sys_acl_set_qualifier)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, void *qual);
388 int (*sys_acl_set_permset)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_PERMSET_T permset);
389 int (*sys_acl_valid)(struct vfs_handle_struct *handle, SMB_ACL_T theacl );
390 int (*sys_acl_set_file)(struct vfs_handle_struct *handle, const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl);
391 int (*sys_acl_set_fd)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_ACL_T theacl);
392 int (*sys_acl_delete_def_file)(struct vfs_handle_struct *handle, const char *path);
393 int (*sys_acl_get_perm)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
394 int (*sys_acl_free_text)(struct vfs_handle_struct *handle, char *text);
395 int (*sys_acl_free_acl)(struct vfs_handle_struct *handle, SMB_ACL_T posix_acl);
396 int (*sys_acl_free_qualifier)(struct vfs_handle_struct *handle, void *qualifier, SMB_ACL_TAG_T tagtype);
399 ssize_t (*getxattr)(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size);
400 ssize_t (*lgetxattr)(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size);
401 ssize_t (*fgetxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size);
402 ssize_t (*listxattr)(struct vfs_handle_struct *handle, const char *path, char *list, size_t size);
403 ssize_t (*llistxattr)(struct vfs_handle_struct *handle, const char *path, char *list, size_t size);
404 ssize_t (*flistxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size);
405 int (*removexattr)(struct vfs_handle_struct *handle, const char *path, const char *name);
406 int (*lremovexattr)(struct vfs_handle_struct *handle, const char *path, const char *name);
407 int (*fremovexattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name);
408 int (*setxattr)(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags);
409 int (*lsetxattr)(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags);
410 int (*fsetxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags);
413 int (*aio_read)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
414 int (*aio_write)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
415 ssize_t (*aio_return_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
416 int (*aio_cancel)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
417 int (*aio_error_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
418 int (*aio_fsync)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_STRUCT_AIOCB *aiocb);
419 int (*aio_suspend)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_AIOCB * const aiocb[], int n, const struct timespec *timeout);
420 bool (*aio_force)(struct vfs_handle_struct *handle, struct files_struct *fsp);
422 /* offline operations */
423 bool (*is_offline)(struct vfs_handle_struct *handle, const char *path, SMB_STRUCT_STAT *sbuf);
424 int (*set_offline)(struct vfs_handle_struct *handle, const char *path);
427 struct vfs_handles_pointers {
428 /* Disk operations */
430 struct vfs_handle_struct *connect_hnd;
431 struct vfs_handle_struct *disconnect;
432 struct vfs_handle_struct *disk_free;
433 struct vfs_handle_struct *get_quota;
434 struct vfs_handle_struct *set_quota;
435 struct vfs_handle_struct *get_shadow_copy_data;
436 struct vfs_handle_struct *statvfs;
437 struct vfs_handle_struct *fs_capabilities;
439 /* Directory operations */
441 struct vfs_handle_struct *opendir;
442 struct vfs_handle_struct *readdir;
443 struct vfs_handle_struct *seekdir;
444 struct vfs_handle_struct *telldir;
445 struct vfs_handle_struct *rewind_dir;
446 struct vfs_handle_struct *mkdir;
447 struct vfs_handle_struct *rmdir;
448 struct vfs_handle_struct *closedir;
450 /* File operations */
452 struct vfs_handle_struct *open;
453 struct vfs_handle_struct *close_hnd;
454 struct vfs_handle_struct *vfs_read;
455 struct vfs_handle_struct *pread;
456 struct vfs_handle_struct *write;
457 struct vfs_handle_struct *pwrite;
458 struct vfs_handle_struct *lseek;
459 struct vfs_handle_struct *sendfile;
460 struct vfs_handle_struct *recvfile;
461 struct vfs_handle_struct *rename;
462 struct vfs_handle_struct *fsync;
463 struct vfs_handle_struct *stat;
464 struct vfs_handle_struct *fstat;
465 struct vfs_handle_struct *lstat;
466 struct vfs_handle_struct *unlink;
467 struct vfs_handle_struct *chmod;
468 struct vfs_handle_struct *fchmod;
469 struct vfs_handle_struct *chown;
470 struct vfs_handle_struct *fchown;
471 struct vfs_handle_struct *lchown;
472 struct vfs_handle_struct *chdir;
473 struct vfs_handle_struct *getwd;
474 struct vfs_handle_struct *ntimes;
475 struct vfs_handle_struct *ftruncate;
476 struct vfs_handle_struct *lock;
477 struct vfs_handle_struct *kernel_flock;
478 struct vfs_handle_struct *linux_setlease;
479 struct vfs_handle_struct *getlock;
480 struct vfs_handle_struct *symlink;
481 struct vfs_handle_struct *vfs_readlink;
482 struct vfs_handle_struct *link;
483 struct vfs_handle_struct *mknod;
484 struct vfs_handle_struct *realpath;
485 struct vfs_handle_struct *notify_watch;
486 struct vfs_handle_struct *chflags;
487 struct vfs_handle_struct *file_id_create;
488 struct vfs_handle_struct *streaminfo;
490 /* NT ACL operations. */
492 struct vfs_handle_struct *fget_nt_acl;
493 struct vfs_handle_struct *get_nt_acl;
494 struct vfs_handle_struct *fset_nt_acl;
496 /* POSIX ACL operations. */
498 struct vfs_handle_struct *chmod_acl;
499 struct vfs_handle_struct *fchmod_acl;
501 struct vfs_handle_struct *sys_acl_get_entry;
502 struct vfs_handle_struct *sys_acl_get_tag_type;
503 struct vfs_handle_struct *sys_acl_get_permset;
504 struct vfs_handle_struct *sys_acl_get_qualifier;
505 struct vfs_handle_struct *sys_acl_get_file;
506 struct vfs_handle_struct *sys_acl_get_fd;
507 struct vfs_handle_struct *sys_acl_clear_perms;
508 struct vfs_handle_struct *sys_acl_add_perm;
509 struct vfs_handle_struct *sys_acl_to_text;
510 struct vfs_handle_struct *sys_acl_init;
511 struct vfs_handle_struct *sys_acl_create_entry;
512 struct vfs_handle_struct *sys_acl_set_tag_type;
513 struct vfs_handle_struct *sys_acl_set_qualifier;
514 struct vfs_handle_struct *sys_acl_set_permset;
515 struct vfs_handle_struct *sys_acl_valid;
516 struct vfs_handle_struct *sys_acl_set_file;
517 struct vfs_handle_struct *sys_acl_set_fd;
518 struct vfs_handle_struct *sys_acl_delete_def_file;
519 struct vfs_handle_struct *sys_acl_get_perm;
520 struct vfs_handle_struct *sys_acl_free_text;
521 struct vfs_handle_struct *sys_acl_free_acl;
522 struct vfs_handle_struct *sys_acl_free_qualifier;
525 struct vfs_handle_struct *getxattr;
526 struct vfs_handle_struct *lgetxattr;
527 struct vfs_handle_struct *fgetxattr;
528 struct vfs_handle_struct *listxattr;
529 struct vfs_handle_struct *llistxattr;
530 struct vfs_handle_struct *flistxattr;
531 struct vfs_handle_struct *removexattr;
532 struct vfs_handle_struct *lremovexattr;
533 struct vfs_handle_struct *fremovexattr;
534 struct vfs_handle_struct *setxattr;
535 struct vfs_handle_struct *lsetxattr;
536 struct vfs_handle_struct *fsetxattr;
539 struct vfs_handle_struct *aio_read;
540 struct vfs_handle_struct *aio_write;
541 struct vfs_handle_struct *aio_return;
542 struct vfs_handle_struct *aio_cancel;
543 struct vfs_handle_struct *aio_error;
544 struct vfs_handle_struct *aio_fsync;
545 struct vfs_handle_struct *aio_suspend;
546 struct vfs_handle_struct *aio_force;
548 /* offline operations */
549 struct vfs_handle_struct *is_offline;
550 struct vfs_handle_struct *set_offline;
555 Possible VFS operation layers (per-operation)
557 These values are used by VFS subsystem when building vfs_ops for connection
558 from multiple VFS modules. Internally, Samba differentiates only opaque and
559 transparent layers at this process. Other types are used for providing better
560 diagnosing facilities.
562 Most modules will provide transparent layers. Opaque layer is for modules
563 which implement actual file system calls (like DB-based VFS). For example,
564 default POSIX VFS which is built in into Samba is an opaque VFS module.
566 Other layer types (audit, splitter, scanner) were designed to provide different
567 degree of transparency and for diagnosing VFS module behaviour.
569 Each module can implement several layers at the same time provided that only
570 one layer is used per each operation.
574 typedef enum _vfs_op_layer {
575 SMB_VFS_LAYER_NOOP = -1, /* - For using in VFS module to indicate end of array */
576 /* of operations description */
577 SMB_VFS_LAYER_OPAQUE = 0, /* - Final level, does not call anything beyond itself */
578 SMB_VFS_LAYER_TRANSPARENT, /* - Normal operation, calls underlying layer after */
579 /* possibly changing passed data */
580 SMB_VFS_LAYER_LOGGER, /* - Logs data, calls underlying layer, logging may not */
582 SMB_VFS_LAYER_SPLITTER, /* - Splits operation, calls underlying layer _and_ own facility, */
583 /* then combines result */
584 SMB_VFS_LAYER_SCANNER /* - Checks data and possibly initiates additional */
585 /* file activity like logging to files _inside_ samba VFS */
589 VFS operation description. Each VFS module registers an array of vfs_op_tuple to VFS subsystem,
590 which describes all operations this module is willing to intercept.
591 VFS subsystem initializes then the conn->vfs_ops and conn->vfs_opaque_ops structs
592 using this information.
595 typedef struct vfs_op_tuple {
602 typedef struct vfs_handle_struct {
603 struct vfs_handle_struct *next, *prev;
605 struct vfs_ops vfs_next;
606 struct connection_struct *conn;
608 void (*free_data)(void **data);
612 typedef struct vfs_statvfs_struct {
613 /* For undefined recommended transfer size return -1 in that field */
614 uint32 OptimalTransferSize; /* bsize on some os, iosize on other os */
618 The next three fields are in terms of the block size.
619 (above). If block size is unknown, 4096 would be a
620 reasonable block size for a server to report.
621 Note that returning the blocks/blocksavail removes need
622 to make a second call (to QFSInfo level 0x103 to get this info.
623 UserBlockAvail is typically less than or equal to BlocksAvail,
624 if no distinction is made return the same value in each.
627 SMB_BIG_UINT TotalBlocks;
628 SMB_BIG_UINT BlocksAvail; /* bfree */
629 SMB_BIG_UINT UserBlocksAvail; /* bavail */
631 /* For undefined Node fields or FSID return -1 */
632 SMB_BIG_UINT TotalFileNodes;
633 SMB_BIG_UINT FreeFileNodes;
634 SMB_BIG_UINT FsIdentifier; /* fsid */
635 /* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
636 /* NB flags can come from FILE_SYSTEM_DEVICE_INFO call */
639 } vfs_statvfs_struct;
641 /* Add a new FSP extension of the given type. Returns a pointer to the
644 #define VFS_ADD_FSP_EXTENSION(handle, fsp, type) \
645 vfs_add_fsp_extension_notype(handle, (fsp), sizeof(type))
647 /* Return a pointer to the existing FSP extension data. */
648 #define VFS_FETCH_FSP_EXTENSION(handle, fsp) \
649 vfs_fetch_fsp_extension(handle, (fsp))
651 /* Return the talloc context associated with an FSP extension. */
652 #define VFS_MEMCTX_FSP_EXTENSION(handle, fsp) \
653 vfs_memctx_fsp_extension(handle, (fsp))
655 /* Remove and destroy an FSP extension. */
656 #define VFS_REMOVE_FSP_EXTENSION(handle, fsp) \
657 vfs_remove_fsp_extension((handle), (fsp))
659 #define SMB_VFS_HANDLE_GET_DATA(handle, datap, type, ret) { \
660 if (!(handle)||((datap=(type *)(handle)->data)==NULL)) { \
661 DEBUG(0,("%s() failed to get vfs_handle->data!\n",FUNCTION_MACRO)); \
666 #define SMB_VFS_HANDLE_SET_DATA(handle, datap, free_fn, type, ret) { \
668 DEBUG(0,("%s() failed to set handle->data!\n",FUNCTION_MACRO)); \
671 if ((handle)->free_data) { \
672 (handle)->free_data(&(handle)->data); \
674 (handle)->data = (void *)datap; \
675 (handle)->free_data = free_fn; \
679 #define SMB_VFS_HANDLE_FREE_DATA(handle) { \
680 if ((handle) && (handle)->free_data) { \
681 (handle)->free_data(&(handle)->data); \
685 /* Check whether module-specific data handle was already allocated or not */
686 #define SMB_VFS_HANDLE_TEST_DATA(handle) ( !(handle) || !(handle)->data ? False : True )
688 #define SMB_VFS_OP(x) ((void *) x)
690 #define DEFAULT_VFS_MODULE_NAME "/[Default VFS]/"
692 #include "vfs_macros.h"