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. */
115 #define SMB_VFS_INTERFACE_VERSION 25
118 /* to bug old modules which are trying to compile with the old functions */
119 #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 };
120 #define lp_parm_string __ERROR_please_port_lp_parm_string_to_lp_parm_const_string_or_lp_parm_talloc_string { \
121 __ERROR_please_port_lp_parm_string_to_lp_parm_const_string_or_lp_parm_talloc_string };
122 #define lp_vfs_options __ERROR_please_donot_use_lp_vfs_options_anymore_use_lp_parm_xxxx_functions_instead { \
123 __ERROR_please_donot_use_lp_vfs_options_anymore_use_lp_parm_xxxx_functions_instead };
126 All intercepted VFS operations must be declared as static functions inside module source
127 in order to keep smbd namespace unpolluted. See source of audit, extd_audit, fake_perms and recycle
128 example VFS modules for more details.
131 /* VFS operations structure */
133 struct vfs_handle_struct;
134 struct connection_struct;
136 struct security_descriptor;
137 struct vfs_statvfs_struct;
142 Available VFS operations. These values must be in sync with vfs_ops struct
143 (struct vfs_fn_pointers and struct vfs_handle_pointers inside of struct vfs_ops).
144 In particular, if new operations are added to vfs_ops, appropriate constants
145 should be added to vfs_op_type so that order of them kept same as in vfs_ops.
148 typedef enum _vfs_op_type {
149 SMB_VFS_OP_NOOP = -1,
151 /* Disk operations */
153 SMB_VFS_OP_CONNECT = 0,
154 SMB_VFS_OP_DISCONNECT,
155 SMB_VFS_OP_DISK_FREE,
156 SMB_VFS_OP_GET_QUOTA,
157 SMB_VFS_OP_SET_QUOTA,
158 SMB_VFS_OP_GET_SHADOW_COPY_DATA,
160 SMB_VFS_OP_FS_CAPABILITIES,
162 /* Directory operations */
168 SMB_VFS_OP_REWINDDIR,
173 /* File operations */
176 SMB_VFS_OP_CREATE_FILE,
199 SMB_VFS_OP_FTRUNCATE,
201 SMB_VFS_OP_KERNEL_FLOCK,
202 SMB_VFS_OP_LINUX_SETLEASE,
209 SMB_VFS_OP_NOTIFY_WATCH,
211 SMB_VFS_OP_FILE_ID_CREATE,
212 SMB_VFS_OP_STREAMINFO,
214 /* NT ACL operations. */
216 SMB_VFS_OP_FGET_NT_ACL,
217 SMB_VFS_OP_GET_NT_ACL,
218 SMB_VFS_OP_FSET_NT_ACL,
220 /* POSIX ACL operations. */
222 SMB_VFS_OP_CHMOD_ACL,
223 SMB_VFS_OP_FCHMOD_ACL,
225 SMB_VFS_OP_SYS_ACL_GET_ENTRY,
226 SMB_VFS_OP_SYS_ACL_GET_TAG_TYPE,
227 SMB_VFS_OP_SYS_ACL_GET_PERMSET,
228 SMB_VFS_OP_SYS_ACL_GET_QUALIFIER,
229 SMB_VFS_OP_SYS_ACL_GET_FILE,
230 SMB_VFS_OP_SYS_ACL_GET_FD,
231 SMB_VFS_OP_SYS_ACL_CLEAR_PERMS,
232 SMB_VFS_OP_SYS_ACL_ADD_PERM,
233 SMB_VFS_OP_SYS_ACL_TO_TEXT,
234 SMB_VFS_OP_SYS_ACL_INIT,
235 SMB_VFS_OP_SYS_ACL_CREATE_ENTRY,
236 SMB_VFS_OP_SYS_ACL_SET_TAG_TYPE,
237 SMB_VFS_OP_SYS_ACL_SET_QUALIFIER,
238 SMB_VFS_OP_SYS_ACL_SET_PERMSET,
239 SMB_VFS_OP_SYS_ACL_VALID,
240 SMB_VFS_OP_SYS_ACL_SET_FILE,
241 SMB_VFS_OP_SYS_ACL_SET_FD,
242 SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
243 SMB_VFS_OP_SYS_ACL_GET_PERM,
244 SMB_VFS_OP_SYS_ACL_FREE_TEXT,
245 SMB_VFS_OP_SYS_ACL_FREE_ACL,
246 SMB_VFS_OP_SYS_ACL_FREE_QUALIFIER,
250 SMB_VFS_OP_LGETXATTR,
251 SMB_VFS_OP_FGETXATTR,
252 SMB_VFS_OP_LISTXATTR,
253 SMB_VFS_OP_LLISTXATTR,
254 SMB_VFS_OP_FLISTXATTR,
255 SMB_VFS_OP_REMOVEXATTR,
256 SMB_VFS_OP_LREMOVEXATTR,
257 SMB_VFS_OP_FREMOVEXATTR,
259 SMB_VFS_OP_LSETXATTR,
260 SMB_VFS_OP_FSETXATTR,
264 SMB_VFS_OP_AIO_WRITE,
265 SMB_VFS_OP_AIO_RETURN,
266 SMB_VFS_OP_AIO_CANCEL,
267 SMB_VFS_OP_AIO_ERROR,
268 SMB_VFS_OP_AIO_FSYNC,
269 SMB_VFS_OP_AIO_SUSPEND,
270 SMB_VFS_OP_AIO_FORCE,
272 /* offline operations */
273 SMB_VFS_OP_IS_OFFLINE,
274 SMB_VFS_OP_SET_OFFLINE,
276 /* This should always be last enum value */
282 Please keep vfs_op_type, struct vfs_fn_pointers and struct vfs_handles_pointers in sync.
285 struct vfs_fn_pointers {
286 /* Disk operations */
288 int (*connect_fn)(struct vfs_handle_struct *handle, const char *service, const char *user);
289 void (*disconnect)(struct vfs_handle_struct *handle);
290 uint64_t (*disk_free)(struct vfs_handle_struct *handle, const char *path, bool small_query, uint64_t *bsize,
291 uint64_t *dfree, uint64_t *dsize);
292 int (*get_quota)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
293 int (*set_quota)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
294 int (*get_shadow_copy_data)(struct vfs_handle_struct *handle, struct files_struct *fsp, SHADOW_COPY_DATA *shadow_copy_data, bool labels);
295 int (*statvfs)(struct vfs_handle_struct *handle, const char *path, struct vfs_statvfs_struct *statbuf);
296 uint32_t (*fs_capabilities)(struct vfs_handle_struct *handle);
298 /* Directory operations */
300 SMB_STRUCT_DIR *(*opendir)(struct vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attributes);
301 SMB_STRUCT_DIRENT *(*readdir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
302 void (*seekdir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp, long offset);
303 long (*telldir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
304 void (*rewind_dir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
305 int (*mkdir)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
306 int (*rmdir)(struct vfs_handle_struct *handle, const char *path);
307 int (*closedir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dir);
309 /* File operations */
311 int (*open)(struct vfs_handle_struct *handle, const char *fname, files_struct *fsp, int flags, mode_t mode);
312 NTSTATUS (*create_file)(struct vfs_handle_struct *handle,
313 struct smb_request *req,
314 uint16_t root_dir_fid,
316 uint32_t create_file_flags,
317 uint32_t access_mask,
318 uint32_t share_access,
319 uint32_t create_disposition,
320 uint32_t create_options,
321 uint32_t file_attributes,
322 uint32_t oplock_request,
323 uint64_t allocation_size,
324 struct security_descriptor *sd,
325 struct ea_list *ea_list,
326 files_struct **result,
328 SMB_STRUCT_STAT *psbuf);
329 int (*close_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
330 ssize_t (*vfs_read)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n);
331 ssize_t (*pread)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n, SMB_OFF_T offset);
332 ssize_t (*write)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n);
333 ssize_t (*pwrite)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n, SMB_OFF_T offset);
334 SMB_OFF_T (*lseek)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_OFF_T offset, int whence);
335 ssize_t (*sendfile)(struct vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *header, SMB_OFF_T offset, size_t count);
336 ssize_t (*recvfile)(struct vfs_handle_struct *handle, int fromfd, files_struct *tofsp, SMB_OFF_T offset, size_t count);
337 int (*rename)(struct vfs_handle_struct *handle, const char *oldname, const char *newname);
338 int (*fsync)(struct vfs_handle_struct *handle, struct files_struct *fsp);
339 int (*stat)(struct vfs_handle_struct *handle, const char *fname, SMB_STRUCT_STAT *sbuf);
340 int (*fstat)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
341 int (*lstat)(struct vfs_handle_struct *handle, const char *path, SMB_STRUCT_STAT *sbuf);
342 int (*unlink)(struct vfs_handle_struct *handle, const char *path);
343 int (*chmod)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
344 int (*fchmod)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
345 int (*chown)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
346 int (*fchown)(struct vfs_handle_struct *handle, struct files_struct *fsp, uid_t uid, gid_t gid);
347 int (*lchown)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
348 int (*chdir)(struct vfs_handle_struct *handle, const char *path);
349 char *(*getwd)(struct vfs_handle_struct *handle, char *buf);
350 int (*ntimes)(struct vfs_handle_struct *handle, const char *path, const struct timespec ts[2]);
351 int (*ftruncate)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_OFF_T offset);
352 bool (*lock)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_OFF_T offset, SMB_OFF_T count, int type);
353 int (*kernel_flock)(struct vfs_handle_struct *handle, struct files_struct *fsp, uint32 share_mode);
354 int (*linux_setlease)(struct vfs_handle_struct *handle, struct files_struct *fsp, int leasetype);
355 bool (*getlock)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid);
356 int (*symlink)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
357 int (*vfs_readlink)(struct vfs_handle_struct *handle, const char *path, char *buf, size_t bufsiz);
358 int (*link)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
359 int (*mknod)(struct vfs_handle_struct *handle, const char *path, mode_t mode, SMB_DEV_T dev);
360 char *(*realpath)(struct vfs_handle_struct *handle, const char *path, char *resolved_path);
361 NTSTATUS (*notify_watch)(struct vfs_handle_struct *handle,
362 struct sys_notify_context *ctx,
363 struct notify_entry *e,
364 void (*callback)(struct sys_notify_context *ctx,
366 struct notify_event *ev),
367 void *private_data, void *handle_p);
368 int (*chflags)(struct vfs_handle_struct *handle, const char *path, unsigned int flags);
369 struct file_id (*file_id_create)(struct vfs_handle_struct *handle, SMB_DEV_T dev, SMB_INO_T inode);
371 NTSTATUS (*streaminfo)(struct vfs_handle_struct *handle,
372 struct files_struct *fsp,
375 unsigned int *num_streams,
376 struct stream_struct **streams);
378 /* NT ACL operations. */
380 NTSTATUS (*fget_nt_acl)(struct vfs_handle_struct *handle,
381 struct files_struct *fsp,
382 uint32 security_info,
383 struct security_descriptor **ppdesc);
384 NTSTATUS (*get_nt_acl)(struct vfs_handle_struct *handle,
386 uint32 security_info,
387 struct security_descriptor **ppdesc);
388 NTSTATUS (*fset_nt_acl)(struct vfs_handle_struct *handle,
389 struct files_struct *fsp,
390 uint32 security_info_sent,
391 const struct security_descriptor *psd);
393 /* POSIX ACL operations. */
395 int (*chmod_acl)(struct vfs_handle_struct *handle, const char *name, mode_t mode);
396 int (*fchmod_acl)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
398 int (*sys_acl_get_entry)(struct vfs_handle_struct *handle, SMB_ACL_T theacl, int entry_id, SMB_ACL_ENTRY_T *entry_p);
399 int (*sys_acl_get_tag_type)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_TAG_T *tag_type_p);
400 int (*sys_acl_get_permset)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_PERMSET_T *permset_p);
401 void * (*sys_acl_get_qualifier)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d);
402 SMB_ACL_T (*sys_acl_get_file)(struct vfs_handle_struct *handle, const char *path_p, SMB_ACL_TYPE_T type);
403 SMB_ACL_T (*sys_acl_get_fd)(struct vfs_handle_struct *handle, struct files_struct *fsp);
404 int (*sys_acl_clear_perms)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset);
405 int (*sys_acl_add_perm)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
406 char * (*sys_acl_to_text)(struct vfs_handle_struct *handle, SMB_ACL_T theacl, ssize_t *plen);
407 SMB_ACL_T (*sys_acl_init)(struct vfs_handle_struct *handle, int count);
408 int (*sys_acl_create_entry)(struct vfs_handle_struct *handle, SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry);
409 int (*sys_acl_set_tag_type)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_TAG_T tagtype);
410 int (*sys_acl_set_qualifier)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, void *qual);
411 int (*sys_acl_set_permset)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_PERMSET_T permset);
412 int (*sys_acl_valid)(struct vfs_handle_struct *handle, SMB_ACL_T theacl );
413 int (*sys_acl_set_file)(struct vfs_handle_struct *handle, const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl);
414 int (*sys_acl_set_fd)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_ACL_T theacl);
415 int (*sys_acl_delete_def_file)(struct vfs_handle_struct *handle, const char *path);
416 int (*sys_acl_get_perm)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
417 int (*sys_acl_free_text)(struct vfs_handle_struct *handle, char *text);
418 int (*sys_acl_free_acl)(struct vfs_handle_struct *handle, SMB_ACL_T posix_acl);
419 int (*sys_acl_free_qualifier)(struct vfs_handle_struct *handle, void *qualifier, SMB_ACL_TAG_T tagtype);
422 ssize_t (*getxattr)(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size);
423 ssize_t (*lgetxattr)(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size);
424 ssize_t (*fgetxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size);
425 ssize_t (*listxattr)(struct vfs_handle_struct *handle, const char *path, char *list, size_t size);
426 ssize_t (*llistxattr)(struct vfs_handle_struct *handle, const char *path, char *list, size_t size);
427 ssize_t (*flistxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size);
428 int (*removexattr)(struct vfs_handle_struct *handle, const char *path, const char *name);
429 int (*lremovexattr)(struct vfs_handle_struct *handle, const char *path, const char *name);
430 int (*fremovexattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name);
431 int (*setxattr)(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags);
432 int (*lsetxattr)(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags);
433 int (*fsetxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags);
436 int (*aio_read)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
437 int (*aio_write)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
438 ssize_t (*aio_return_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
439 int (*aio_cancel)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
440 int (*aio_error_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
441 int (*aio_fsync)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_STRUCT_AIOCB *aiocb);
442 int (*aio_suspend)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_AIOCB * const aiocb[], int n, const struct timespec *timeout);
443 bool (*aio_force)(struct vfs_handle_struct *handle, struct files_struct *fsp);
445 /* offline operations */
446 bool (*is_offline)(struct vfs_handle_struct *handle, const char *path, SMB_STRUCT_STAT *sbuf);
447 int (*set_offline)(struct vfs_handle_struct *handle, const char *path);
450 struct vfs_handles_pointers {
451 /* Disk operations */
453 struct vfs_handle_struct *connect_hnd;
454 struct vfs_handle_struct *disconnect;
455 struct vfs_handle_struct *disk_free;
456 struct vfs_handle_struct *get_quota;
457 struct vfs_handle_struct *set_quota;
458 struct vfs_handle_struct *get_shadow_copy_data;
459 struct vfs_handle_struct *statvfs;
460 struct vfs_handle_struct *fs_capabilities;
462 /* Directory operations */
464 struct vfs_handle_struct *opendir;
465 struct vfs_handle_struct *readdir;
466 struct vfs_handle_struct *seekdir;
467 struct vfs_handle_struct *telldir;
468 struct vfs_handle_struct *rewind_dir;
469 struct vfs_handle_struct *mkdir;
470 struct vfs_handle_struct *rmdir;
471 struct vfs_handle_struct *closedir;
473 /* File operations */
475 struct vfs_handle_struct *open;
476 struct vfs_handle_struct *create_file;
477 struct vfs_handle_struct *close_hnd;
478 struct vfs_handle_struct *vfs_read;
479 struct vfs_handle_struct *pread;
480 struct vfs_handle_struct *write;
481 struct vfs_handle_struct *pwrite;
482 struct vfs_handle_struct *lseek;
483 struct vfs_handle_struct *sendfile;
484 struct vfs_handle_struct *recvfile;
485 struct vfs_handle_struct *rename;
486 struct vfs_handle_struct *fsync;
487 struct vfs_handle_struct *stat;
488 struct vfs_handle_struct *fstat;
489 struct vfs_handle_struct *lstat;
490 struct vfs_handle_struct *unlink;
491 struct vfs_handle_struct *chmod;
492 struct vfs_handle_struct *fchmod;
493 struct vfs_handle_struct *chown;
494 struct vfs_handle_struct *fchown;
495 struct vfs_handle_struct *lchown;
496 struct vfs_handle_struct *chdir;
497 struct vfs_handle_struct *getwd;
498 struct vfs_handle_struct *ntimes;
499 struct vfs_handle_struct *ftruncate;
500 struct vfs_handle_struct *lock;
501 struct vfs_handle_struct *kernel_flock;
502 struct vfs_handle_struct *linux_setlease;
503 struct vfs_handle_struct *getlock;
504 struct vfs_handle_struct *symlink;
505 struct vfs_handle_struct *vfs_readlink;
506 struct vfs_handle_struct *link;
507 struct vfs_handle_struct *mknod;
508 struct vfs_handle_struct *realpath;
509 struct vfs_handle_struct *notify_watch;
510 struct vfs_handle_struct *chflags;
511 struct vfs_handle_struct *file_id_create;
512 struct vfs_handle_struct *streaminfo;
514 /* NT ACL operations. */
516 struct vfs_handle_struct *fget_nt_acl;
517 struct vfs_handle_struct *get_nt_acl;
518 struct vfs_handle_struct *fset_nt_acl;
520 /* POSIX ACL operations. */
522 struct vfs_handle_struct *chmod_acl;
523 struct vfs_handle_struct *fchmod_acl;
525 struct vfs_handle_struct *sys_acl_get_entry;
526 struct vfs_handle_struct *sys_acl_get_tag_type;
527 struct vfs_handle_struct *sys_acl_get_permset;
528 struct vfs_handle_struct *sys_acl_get_qualifier;
529 struct vfs_handle_struct *sys_acl_get_file;
530 struct vfs_handle_struct *sys_acl_get_fd;
531 struct vfs_handle_struct *sys_acl_clear_perms;
532 struct vfs_handle_struct *sys_acl_add_perm;
533 struct vfs_handle_struct *sys_acl_to_text;
534 struct vfs_handle_struct *sys_acl_init;
535 struct vfs_handle_struct *sys_acl_create_entry;
536 struct vfs_handle_struct *sys_acl_set_tag_type;
537 struct vfs_handle_struct *sys_acl_set_qualifier;
538 struct vfs_handle_struct *sys_acl_set_permset;
539 struct vfs_handle_struct *sys_acl_valid;
540 struct vfs_handle_struct *sys_acl_set_file;
541 struct vfs_handle_struct *sys_acl_set_fd;
542 struct vfs_handle_struct *sys_acl_delete_def_file;
543 struct vfs_handle_struct *sys_acl_get_perm;
544 struct vfs_handle_struct *sys_acl_free_text;
545 struct vfs_handle_struct *sys_acl_free_acl;
546 struct vfs_handle_struct *sys_acl_free_qualifier;
549 struct vfs_handle_struct *getxattr;
550 struct vfs_handle_struct *lgetxattr;
551 struct vfs_handle_struct *fgetxattr;
552 struct vfs_handle_struct *listxattr;
553 struct vfs_handle_struct *llistxattr;
554 struct vfs_handle_struct *flistxattr;
555 struct vfs_handle_struct *removexattr;
556 struct vfs_handle_struct *lremovexattr;
557 struct vfs_handle_struct *fremovexattr;
558 struct vfs_handle_struct *setxattr;
559 struct vfs_handle_struct *lsetxattr;
560 struct vfs_handle_struct *fsetxattr;
563 struct vfs_handle_struct *aio_read;
564 struct vfs_handle_struct *aio_write;
565 struct vfs_handle_struct *aio_return;
566 struct vfs_handle_struct *aio_cancel;
567 struct vfs_handle_struct *aio_error;
568 struct vfs_handle_struct *aio_fsync;
569 struct vfs_handle_struct *aio_suspend;
570 struct vfs_handle_struct *aio_force;
572 /* offline operations */
573 struct vfs_handle_struct *is_offline;
574 struct vfs_handle_struct *set_offline;
579 Possible VFS operation layers (per-operation)
581 These values are used by VFS subsystem when building vfs_ops for connection
582 from multiple VFS modules. Internally, Samba differentiates only opaque and
583 transparent layers at this process. Other types are used for providing better
584 diagnosing facilities.
586 Most modules will provide transparent layers. Opaque layer is for modules
587 which implement actual file system calls (like DB-based VFS). For example,
588 default POSIX VFS which is built in into Samba is an opaque VFS module.
590 Other layer types (audit, splitter, scanner) were designed to provide different
591 degree of transparency and for diagnosing VFS module behaviour.
593 Each module can implement several layers at the same time provided that only
594 one layer is used per each operation.
598 typedef enum _vfs_op_layer {
599 SMB_VFS_LAYER_NOOP = -1, /* - For using in VFS module to indicate end of array */
600 /* of operations description */
601 SMB_VFS_LAYER_OPAQUE = 0, /* - Final level, does not call anything beyond itself */
602 SMB_VFS_LAYER_TRANSPARENT, /* - Normal operation, calls underlying layer after */
603 /* possibly changing passed data */
604 SMB_VFS_LAYER_LOGGER, /* - Logs data, calls underlying layer, logging may not */
606 SMB_VFS_LAYER_SPLITTER, /* - Splits operation, calls underlying layer _and_ own facility, */
607 /* then combines result */
608 SMB_VFS_LAYER_SCANNER /* - Checks data and possibly initiates additional */
609 /* file activity like logging to files _inside_ samba VFS */
613 VFS operation description. Each VFS module registers an array of vfs_op_tuple to VFS subsystem,
614 which describes all operations this module is willing to intercept.
615 VFS subsystem initializes then the conn->vfs_ops and conn->vfs_opaque_ops structs
616 using this information.
619 typedef struct vfs_op_tuple {
626 typedef struct vfs_handle_struct {
627 struct vfs_handle_struct *next, *prev;
629 struct vfs_ops vfs_next;
630 struct connection_struct *conn;
632 void (*free_data)(void **data);
636 typedef struct vfs_statvfs_struct {
637 /* For undefined recommended transfer size return -1 in that field */
638 uint32 OptimalTransferSize; /* bsize on some os, iosize on other os */
642 The next three fields are in terms of the block size.
643 (above). If block size is unknown, 4096 would be a
644 reasonable block size for a server to report.
645 Note that returning the blocks/blocksavail removes need
646 to make a second call (to QFSInfo level 0x103 to get this info.
647 UserBlockAvail is typically less than or equal to BlocksAvail,
648 if no distinction is made return the same value in each.
651 uint64_t TotalBlocks;
652 uint64_t BlocksAvail; /* bfree */
653 uint64_t UserBlocksAvail; /* bavail */
655 /* For undefined Node fields or FSID return -1 */
656 uint64_t TotalFileNodes;
657 uint64_t FreeFileNodes;
658 uint64_t FsIdentifier; /* fsid */
659 /* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
660 /* NB flags can come from FILE_SYSTEM_DEVICE_INFO call */
663 } vfs_statvfs_struct;
665 /* Add a new FSP extension of the given type. Returns a pointer to the
668 #define VFS_ADD_FSP_EXTENSION(handle, fsp, type) \
669 vfs_add_fsp_extension_notype(handle, (fsp), sizeof(type))
671 /* Return a pointer to the existing FSP extension data. */
672 #define VFS_FETCH_FSP_EXTENSION(handle, fsp) \
673 vfs_fetch_fsp_extension(handle, (fsp))
675 /* Return the talloc context associated with an FSP extension. */
676 #define VFS_MEMCTX_FSP_EXTENSION(handle, fsp) \
677 vfs_memctx_fsp_extension(handle, (fsp))
679 /* Remove and destroy an FSP extension. */
680 #define VFS_REMOVE_FSP_EXTENSION(handle, fsp) \
681 vfs_remove_fsp_extension((handle), (fsp))
683 #define SMB_VFS_HANDLE_GET_DATA(handle, datap, type, ret) { \
684 if (!(handle)||((datap=(type *)(handle)->data)==NULL)) { \
685 DEBUG(0,("%s() failed to get vfs_handle->data!\n",FUNCTION_MACRO)); \
690 #define SMB_VFS_HANDLE_SET_DATA(handle, datap, free_fn, type, ret) { \
692 DEBUG(0,("%s() failed to set handle->data!\n",FUNCTION_MACRO)); \
695 if ((handle)->free_data) { \
696 (handle)->free_data(&(handle)->data); \
698 (handle)->data = (void *)datap; \
699 (handle)->free_data = free_fn; \
703 #define SMB_VFS_HANDLE_FREE_DATA(handle) { \
704 if ((handle) && (handle)->free_data) { \
705 (handle)->free_data(&(handle)->data); \
709 /* Check whether module-specific data handle was already allocated or not */
710 #define SMB_VFS_HANDLE_TEST_DATA(handle) ( !(handle) || !(handle)->data ? False : True )
712 #define SMB_VFS_OP(x) ((void *) x)
714 #define DEFAULT_VFS_MODULE_NAME "/[Default VFS]/"
716 #include "vfs_macros.h"