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 */
104 #define SMB_VFS_INTERFACE_VERSION 22
107 /* to bug old modules which are trying to compile with the old functions */
108 #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 };
109 #define lp_parm_string __ERROR_please_port_lp_parm_string_to_lp_parm_const_string_or_lp_parm_talloc_string { \
110 __ERROR_please_port_lp_parm_string_to_lp_parm_const_string_or_lp_parm_talloc_string };
111 #define lp_vfs_options __ERROR_please_donot_use_lp_vfs_options_anymore_use_lp_parm_xxxx_functions_instead { \
112 __ERROR_please_donot_use_lp_vfs_options_anymore_use_lp_parm_xxxx_functions_instead };
115 All intercepted VFS operations must be declared as static functions inside module source
116 in order to keep smbd namespace unpolluted. See source of audit, extd_audit, fake_perms and recycle
117 example VFS modules for more details.
120 /* VFS operations structure */
122 struct vfs_handle_struct;
123 struct connection_struct;
125 struct security_descriptor;
126 struct vfs_statvfs_struct;
129 Available VFS operations. These values must be in sync with vfs_ops struct
130 (struct vfs_fn_pointers and struct vfs_handle_pointers inside of struct vfs_ops).
131 In particular, if new operations are added to vfs_ops, appropriate constants
132 should be added to vfs_op_type so that order of them kept same as in vfs_ops.
135 typedef enum _vfs_op_type {
136 SMB_VFS_OP_NOOP = -1,
138 /* Disk operations */
140 SMB_VFS_OP_CONNECT = 0,
141 SMB_VFS_OP_DISCONNECT,
142 SMB_VFS_OP_DISK_FREE,
143 SMB_VFS_OP_GET_QUOTA,
144 SMB_VFS_OP_SET_QUOTA,
145 SMB_VFS_OP_GET_SHADOW_COPY_DATA,
148 /* Directory operations */
154 SMB_VFS_OP_REWINDDIR,
159 /* File operations */
184 SMB_VFS_OP_FTRUNCATE,
186 SMB_VFS_OP_KERNEL_FLOCK,
187 SMB_VFS_OP_LINUX_SETLEASE,
194 SMB_VFS_OP_NOTIFY_WATCH,
196 SMB_VFS_OP_FILE_ID_CREATE,
198 /* NT ACL operations. */
200 SMB_VFS_OP_FGET_NT_ACL,
201 SMB_VFS_OP_GET_NT_ACL,
202 SMB_VFS_OP_FSET_NT_ACL,
203 SMB_VFS_OP_SET_NT_ACL,
205 /* POSIX ACL operations. */
207 SMB_VFS_OP_CHMOD_ACL,
208 SMB_VFS_OP_FCHMOD_ACL,
210 SMB_VFS_OP_SYS_ACL_GET_ENTRY,
211 SMB_VFS_OP_SYS_ACL_GET_TAG_TYPE,
212 SMB_VFS_OP_SYS_ACL_GET_PERMSET,
213 SMB_VFS_OP_SYS_ACL_GET_QUALIFIER,
214 SMB_VFS_OP_SYS_ACL_GET_FILE,
215 SMB_VFS_OP_SYS_ACL_GET_FD,
216 SMB_VFS_OP_SYS_ACL_CLEAR_PERMS,
217 SMB_VFS_OP_SYS_ACL_ADD_PERM,
218 SMB_VFS_OP_SYS_ACL_TO_TEXT,
219 SMB_VFS_OP_SYS_ACL_INIT,
220 SMB_VFS_OP_SYS_ACL_CREATE_ENTRY,
221 SMB_VFS_OP_SYS_ACL_SET_TAG_TYPE,
222 SMB_VFS_OP_SYS_ACL_SET_QUALIFIER,
223 SMB_VFS_OP_SYS_ACL_SET_PERMSET,
224 SMB_VFS_OP_SYS_ACL_VALID,
225 SMB_VFS_OP_SYS_ACL_SET_FILE,
226 SMB_VFS_OP_SYS_ACL_SET_FD,
227 SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
228 SMB_VFS_OP_SYS_ACL_GET_PERM,
229 SMB_VFS_OP_SYS_ACL_FREE_TEXT,
230 SMB_VFS_OP_SYS_ACL_FREE_ACL,
231 SMB_VFS_OP_SYS_ACL_FREE_QUALIFIER,
235 SMB_VFS_OP_LGETXATTR,
236 SMB_VFS_OP_FGETXATTR,
237 SMB_VFS_OP_LISTXATTR,
238 SMB_VFS_OP_LLISTXATTR,
239 SMB_VFS_OP_FLISTXATTR,
240 SMB_VFS_OP_REMOVEXATTR,
241 SMB_VFS_OP_LREMOVEXATTR,
242 SMB_VFS_OP_FREMOVEXATTR,
244 SMB_VFS_OP_LSETXATTR,
245 SMB_VFS_OP_FSETXATTR,
249 SMB_VFS_OP_AIO_WRITE,
250 SMB_VFS_OP_AIO_RETURN,
251 SMB_VFS_OP_AIO_CANCEL,
252 SMB_VFS_OP_AIO_ERROR,
253 SMB_VFS_OP_AIO_FSYNC,
254 SMB_VFS_OP_AIO_SUSPEND,
256 /* This should always be last enum value */
262 Please keep vfs_op_type, struct vfs_fn_pointers and struct vfs_handles_pointers in sync.
265 struct vfs_fn_pointers {
266 /* Disk operations */
268 int (*connect_fn)(struct vfs_handle_struct *handle, const char *service, const char *user);
269 void (*disconnect)(struct vfs_handle_struct *handle);
270 SMB_BIG_UINT (*disk_free)(struct vfs_handle_struct *handle, const char *path, bool small_query, SMB_BIG_UINT *bsize,
271 SMB_BIG_UINT *dfree, SMB_BIG_UINT *dsize);
272 int (*get_quota)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
273 int (*set_quota)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
274 int (*get_shadow_copy_data)(struct vfs_handle_struct *handle, struct files_struct *fsp, SHADOW_COPY_DATA *shadow_copy_data, bool labels);
275 int (*statvfs)(struct vfs_handle_struct *handle, const char *path, struct vfs_statvfs_struct *statbuf);
277 /* Directory operations */
279 SMB_STRUCT_DIR *(*opendir)(struct vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attributes);
280 SMB_STRUCT_DIRENT *(*readdir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
281 void (*seekdir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp, long offset);
282 long (*telldir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
283 void (*rewind_dir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
284 int (*mkdir)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
285 int (*rmdir)(struct vfs_handle_struct *handle, const char *path);
286 int (*closedir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dir);
288 /* File operations */
290 int (*open)(struct vfs_handle_struct *handle, const char *fname, files_struct *fsp, int flags, mode_t mode);
291 int (*close_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd);
292 ssize_t (*read)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, void *data, size_t n);
293 ssize_t (*pread)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n, SMB_OFF_T offset);
294 ssize_t (*write)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, const void *data, size_t n);
295 ssize_t (*pwrite)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n, SMB_OFF_T offset);
296 SMB_OFF_T (*lseek)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_OFF_T offset, int whence);
297 ssize_t (*sendfile)(struct vfs_handle_struct *handle, int tofd, files_struct *fsp, int fromfd, const DATA_BLOB *header, SMB_OFF_T offset, size_t count);
298 ssize_t (*recvfile)(struct vfs_handle_struct *handle, int fromfd, files_struct *fsp, int tofd, SMB_OFF_T offset, size_t count);
299 int (*rename)(struct vfs_handle_struct *handle, const char *oldname, const char *newname);
300 int (*fsync)(struct vfs_handle_struct *handle, struct files_struct *fsp);
301 int (*stat)(struct vfs_handle_struct *handle, const char *fname, SMB_STRUCT_STAT *sbuf);
302 int (*fstat)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
303 int (*lstat)(struct vfs_handle_struct *handle, const char *path, SMB_STRUCT_STAT *sbuf);
304 int (*unlink)(struct vfs_handle_struct *handle, const char *path);
305 int (*chmod)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
306 int (*fchmod)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
307 int (*chown)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
308 int (*fchown)(struct vfs_handle_struct *handle, struct files_struct *fsp, uid_t uid, gid_t gid);
309 int (*lchown)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
310 int (*chdir)(struct vfs_handle_struct *handle, const char *path);
311 char *(*getwd)(struct vfs_handle_struct *handle, char *buf);
312 int (*ntimes)(struct vfs_handle_struct *handle, const char *path, const struct timespec ts[2]);
313 int (*ftruncate)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_OFF_T offset);
314 bool (*lock)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_OFF_T offset, SMB_OFF_T count, int type);
315 int (*kernel_flock)(struct vfs_handle_struct *handle, struct files_struct *fsp, uint32 share_mode);
316 int (*linux_setlease)(struct vfs_handle_struct *handle, struct files_struct *fsp, int leasetype);
317 bool (*getlock)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid);
318 int (*symlink)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
319 int (*readlink)(struct vfs_handle_struct *handle, const char *path, char *buf, size_t bufsiz);
320 int (*link)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
321 int (*mknod)(struct vfs_handle_struct *handle, const char *path, mode_t mode, SMB_DEV_T dev);
322 char *(*realpath)(struct vfs_handle_struct *handle, const char *path, char *resolved_path);
323 NTSTATUS (*notify_watch)(struct vfs_handle_struct *handle,
324 struct sys_notify_context *ctx,
325 struct notify_entry *e,
326 void (*callback)(struct sys_notify_context *ctx,
328 struct notify_event *ev),
329 void *private_data, void *handle_p);
330 int (*chflags)(struct vfs_handle_struct *handle, const char *path, unsigned int flags);
331 struct file_id (*file_id_create)(struct vfs_handle_struct *handle, SMB_DEV_T dev, SMB_INO_T inode);
333 /* NT ACL operations. */
335 NTSTATUS (*fget_nt_acl)(struct vfs_handle_struct *handle,
336 struct files_struct *fsp,
337 uint32 security_info,
338 struct security_descriptor **ppdesc);
339 NTSTATUS (*get_nt_acl)(struct vfs_handle_struct *handle,
341 uint32 security_info,
342 struct security_descriptor **ppdesc);
343 NTSTATUS (*fset_nt_acl)(struct vfs_handle_struct *handle,
344 struct files_struct *fsp,
345 uint32 security_info_sent,
346 struct security_descriptor *psd);
347 NTSTATUS (*set_nt_acl)(struct vfs_handle_struct *handle,
348 struct files_struct *fsp,
350 uint32 security_info_sent,
351 struct security_descriptor *psd);
353 /* POSIX ACL operations. */
355 int (*chmod_acl)(struct vfs_handle_struct *handle, const char *name, mode_t mode);
356 int (*fchmod_acl)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
358 int (*sys_acl_get_entry)(struct vfs_handle_struct *handle, SMB_ACL_T theacl, int entry_id, SMB_ACL_ENTRY_T *entry_p);
359 int (*sys_acl_get_tag_type)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_TAG_T *tag_type_p);
360 int (*sys_acl_get_permset)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_PERMSET_T *permset_p);
361 void * (*sys_acl_get_qualifier)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d);
362 SMB_ACL_T (*sys_acl_get_file)(struct vfs_handle_struct *handle, const char *path_p, SMB_ACL_TYPE_T type);
363 SMB_ACL_T (*sys_acl_get_fd)(struct vfs_handle_struct *handle, struct files_struct *fsp);
364 int (*sys_acl_clear_perms)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset);
365 int (*sys_acl_add_perm)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
366 char * (*sys_acl_to_text)(struct vfs_handle_struct *handle, SMB_ACL_T theacl, ssize_t *plen);
367 SMB_ACL_T (*sys_acl_init)(struct vfs_handle_struct *handle, int count);
368 int (*sys_acl_create_entry)(struct vfs_handle_struct *handle, SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry);
369 int (*sys_acl_set_tag_type)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_TAG_T tagtype);
370 int (*sys_acl_set_qualifier)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, void *qual);
371 int (*sys_acl_set_permset)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_PERMSET_T permset);
372 int (*sys_acl_valid)(struct vfs_handle_struct *handle, SMB_ACL_T theacl );
373 int (*sys_acl_set_file)(struct vfs_handle_struct *handle, const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl);
374 int (*sys_acl_set_fd)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_ACL_T theacl);
375 int (*sys_acl_delete_def_file)(struct vfs_handle_struct *handle, const char *path);
376 int (*sys_acl_get_perm)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
377 int (*sys_acl_free_text)(struct vfs_handle_struct *handle, char *text);
378 int (*sys_acl_free_acl)(struct vfs_handle_struct *handle, SMB_ACL_T posix_acl);
379 int (*sys_acl_free_qualifier)(struct vfs_handle_struct *handle, void *qualifier, SMB_ACL_TAG_T tagtype);
382 ssize_t (*getxattr)(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size);
383 ssize_t (*lgetxattr)(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size);
384 ssize_t (*fgetxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size);
385 ssize_t (*listxattr)(struct vfs_handle_struct *handle, const char *path, char *list, size_t size);
386 ssize_t (*llistxattr)(struct vfs_handle_struct *handle, const char *path, char *list, size_t size);
387 ssize_t (*flistxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size);
388 int (*removexattr)(struct vfs_handle_struct *handle, const char *path, const char *name);
389 int (*lremovexattr)(struct vfs_handle_struct *handle, const char *path, const char *name);
390 int (*fremovexattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name);
391 int (*setxattr)(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags);
392 int (*lsetxattr)(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags);
393 int (*fsetxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags);
396 int (*aio_read)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
397 int (*aio_write)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
398 ssize_t (*aio_return_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
399 int (*aio_cancel)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_STRUCT_AIOCB *aiocb);
400 int (*aio_error_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
401 int (*aio_fsync)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_STRUCT_AIOCB *aiocb);
402 int (*aio_suspend)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_AIOCB * const aiocb[], int n, const struct timespec *timeout);
406 struct vfs_handles_pointers {
407 /* Disk operations */
409 struct vfs_handle_struct *connect_hnd;
410 struct vfs_handle_struct *disconnect;
411 struct vfs_handle_struct *disk_free;
412 struct vfs_handle_struct *get_quota;
413 struct vfs_handle_struct *set_quota;
414 struct vfs_handle_struct *get_shadow_copy_data;
415 struct vfs_handle_struct *statvfs;
417 /* Directory operations */
419 struct vfs_handle_struct *opendir;
420 struct vfs_handle_struct *readdir;
421 struct vfs_handle_struct *seekdir;
422 struct vfs_handle_struct *telldir;
423 struct vfs_handle_struct *rewind_dir;
424 struct vfs_handle_struct *mkdir;
425 struct vfs_handle_struct *rmdir;
426 struct vfs_handle_struct *closedir;
428 /* File operations */
430 struct vfs_handle_struct *open;
431 struct vfs_handle_struct *close_hnd;
432 struct vfs_handle_struct *read;
433 struct vfs_handle_struct *pread;
434 struct vfs_handle_struct *write;
435 struct vfs_handle_struct *pwrite;
436 struct vfs_handle_struct *lseek;
437 struct vfs_handle_struct *sendfile;
438 struct vfs_handle_struct *recvfile;
439 struct vfs_handle_struct *rename;
440 struct vfs_handle_struct *fsync;
441 struct vfs_handle_struct *stat;
442 struct vfs_handle_struct *fstat;
443 struct vfs_handle_struct *lstat;
444 struct vfs_handle_struct *unlink;
445 struct vfs_handle_struct *chmod;
446 struct vfs_handle_struct *fchmod;
447 struct vfs_handle_struct *chown;
448 struct vfs_handle_struct *fchown;
449 struct vfs_handle_struct *lchown;
450 struct vfs_handle_struct *chdir;
451 struct vfs_handle_struct *getwd;
452 struct vfs_handle_struct *ntimes;
453 struct vfs_handle_struct *ftruncate;
454 struct vfs_handle_struct *lock;
455 struct vfs_handle_struct *kernel_flock;
456 struct vfs_handle_struct *linux_setlease;
457 struct vfs_handle_struct *getlock;
458 struct vfs_handle_struct *symlink;
459 struct vfs_handle_struct *readlink;
460 struct vfs_handle_struct *link;
461 struct vfs_handle_struct *mknod;
462 struct vfs_handle_struct *realpath;
463 struct vfs_handle_struct *notify_watch;
464 struct vfs_handle_struct *chflags;
465 struct vfs_handle_struct *file_id_create;
467 /* NT ACL operations. */
469 struct vfs_handle_struct *fget_nt_acl;
470 struct vfs_handle_struct *get_nt_acl;
471 struct vfs_handle_struct *fset_nt_acl;
472 struct vfs_handle_struct *set_nt_acl;
474 /* POSIX ACL operations. */
476 struct vfs_handle_struct *chmod_acl;
477 struct vfs_handle_struct *fchmod_acl;
479 struct vfs_handle_struct *sys_acl_get_entry;
480 struct vfs_handle_struct *sys_acl_get_tag_type;
481 struct vfs_handle_struct *sys_acl_get_permset;
482 struct vfs_handle_struct *sys_acl_get_qualifier;
483 struct vfs_handle_struct *sys_acl_get_file;
484 struct vfs_handle_struct *sys_acl_get_fd;
485 struct vfs_handle_struct *sys_acl_clear_perms;
486 struct vfs_handle_struct *sys_acl_add_perm;
487 struct vfs_handle_struct *sys_acl_to_text;
488 struct vfs_handle_struct *sys_acl_init;
489 struct vfs_handle_struct *sys_acl_create_entry;
490 struct vfs_handle_struct *sys_acl_set_tag_type;
491 struct vfs_handle_struct *sys_acl_set_qualifier;
492 struct vfs_handle_struct *sys_acl_set_permset;
493 struct vfs_handle_struct *sys_acl_valid;
494 struct vfs_handle_struct *sys_acl_set_file;
495 struct vfs_handle_struct *sys_acl_set_fd;
496 struct vfs_handle_struct *sys_acl_delete_def_file;
497 struct vfs_handle_struct *sys_acl_get_perm;
498 struct vfs_handle_struct *sys_acl_free_text;
499 struct vfs_handle_struct *sys_acl_free_acl;
500 struct vfs_handle_struct *sys_acl_free_qualifier;
503 struct vfs_handle_struct *getxattr;
504 struct vfs_handle_struct *lgetxattr;
505 struct vfs_handle_struct *fgetxattr;
506 struct vfs_handle_struct *listxattr;
507 struct vfs_handle_struct *llistxattr;
508 struct vfs_handle_struct *flistxattr;
509 struct vfs_handle_struct *removexattr;
510 struct vfs_handle_struct *lremovexattr;
511 struct vfs_handle_struct *fremovexattr;
512 struct vfs_handle_struct *setxattr;
513 struct vfs_handle_struct *lsetxattr;
514 struct vfs_handle_struct *fsetxattr;
517 struct vfs_handle_struct *aio_read;
518 struct vfs_handle_struct *aio_write;
519 struct vfs_handle_struct *aio_return;
520 struct vfs_handle_struct *aio_cancel;
521 struct vfs_handle_struct *aio_error;
522 struct vfs_handle_struct *aio_fsync;
523 struct vfs_handle_struct *aio_suspend;
528 Possible VFS operation layers (per-operation)
530 These values are used by VFS subsystem when building vfs_ops for connection
531 from multiple VFS modules. Internally, Samba differentiates only opaque and
532 transparent layers at this process. Other types are used for providing better
533 diagnosing facilities.
535 Most modules will provide transparent layers. Opaque layer is for modules
536 which implement actual file system calls (like DB-based VFS). For example,
537 default POSIX VFS which is built in into Samba is an opaque VFS module.
539 Other layer types (audit, splitter, scanner) were designed to provide different
540 degree of transparency and for diagnosing VFS module behaviour.
542 Each module can implement several layers at the same time provided that only
543 one layer is used per each operation.
547 typedef enum _vfs_op_layer {
548 SMB_VFS_LAYER_NOOP = -1, /* - For using in VFS module to indicate end of array */
549 /* of operations description */
550 SMB_VFS_LAYER_OPAQUE = 0, /* - Final level, does not call anything beyond itself */
551 SMB_VFS_LAYER_TRANSPARENT, /* - Normal operation, calls underlying layer after */
552 /* possibly changing passed data */
553 SMB_VFS_LAYER_LOGGER, /* - Logs data, calls underlying layer, logging may not */
555 SMB_VFS_LAYER_SPLITTER, /* - Splits operation, calls underlying layer _and_ own facility, */
556 /* then combines result */
557 SMB_VFS_LAYER_SCANNER /* - Checks data and possibly initiates additional */
558 /* file activity like logging to files _inside_ samba VFS */
562 VFS operation description. Each VFS module registers an array of vfs_op_tuple to VFS subsystem,
563 which describes all operations this module is willing to intercept.
564 VFS subsystem initializes then the conn->vfs_ops and conn->vfs_opaque_ops structs
565 using this information.
568 typedef struct vfs_op_tuple {
575 typedef struct vfs_handle_struct {
576 struct vfs_handle_struct *next, *prev;
578 struct vfs_ops vfs_next;
579 struct connection_struct *conn;
581 void (*free_data)(void **data);
585 typedef struct vfs_statvfs_struct {
586 /* For undefined recommended transfer size return -1 in that field */
587 uint32 OptimalTransferSize; /* bsize on some os, iosize on other os */
591 The next three fields are in terms of the block size.
592 (above). If block size is unknown, 4096 would be a
593 reasonable block size for a server to report.
594 Note that returning the blocks/blocksavail removes need
595 to make a second call (to QFSInfo level 0x103 to get this info.
596 UserBlockAvail is typically less than or equal to BlocksAvail,
597 if no distinction is made return the same value in each.
600 SMB_BIG_UINT TotalBlocks;
601 SMB_BIG_UINT BlocksAvail; /* bfree */
602 SMB_BIG_UINT UserBlocksAvail; /* bavail */
604 /* For undefined Node fields or FSID return -1 */
605 SMB_BIG_UINT TotalFileNodes;
606 SMB_BIG_UINT FreeFileNodes;
607 SMB_BIG_UINT FsIdentifier; /* fsid */
608 /* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
609 /* NB flags can come from FILE_SYSTEM_DEVICE_INFO call */
612 } vfs_statvfs_struct;
614 /* Add a new FSP extension of the given type. Returns a pointer to the
617 #define VFS_ADD_FSP_EXTENSION(handle, fsp, type) \
618 vfs_add_fsp_extension_notype(handle, (fsp), sizeof(type))
620 /* Return a pointer to the existing FSP extension data. */
621 #define VFS_FETCH_FSP_EXTENSION(handle, fsp) \
622 vfs_fetch_fsp_extension(handle, (fsp))
624 /* Return the talloc context associated with an FSP extension. */
625 #define VFS_MEMCTX_FSP_EXTENSION(handle, fsp) \
626 vfs_memctx_fsp_extension(handle, (fsp))
628 /* Remove and destroy an FSP extension. */
629 #define VFS_REMOVE_FSP_EXTENSION(handle, fsp) \
630 vfs_remove_fsp_extension((handle), (fsp))
632 #define SMB_VFS_HANDLE_GET_DATA(handle, datap, type, ret) { \
633 if (!(handle)||((datap=(type *)(handle)->data)==NULL)) { \
634 DEBUG(0,("%s() failed to get vfs_handle->data!\n",FUNCTION_MACRO)); \
639 #define SMB_VFS_HANDLE_SET_DATA(handle, datap, free_fn, type, ret) { \
641 DEBUG(0,("%s() failed to set handle->data!\n",FUNCTION_MACRO)); \
644 if ((handle)->free_data) { \
645 (handle)->free_data(&(handle)->data); \
647 (handle)->data = (void *)datap; \
648 (handle)->free_data = free_fn; \
652 #define SMB_VFS_HANDLE_FREE_DATA(handle) { \
653 if ((handle) && (handle)->free_data) { \
654 (handle)->free_data(&(handle)->data); \
658 /* Check whether module-specific data handle was already allocated or not */
659 #define SMB_VFS_HANDLE_TEST_DATA(handle) ( !(handle) || !(handle)->data ? False : True )
661 #define SMB_VFS_OP(x) ((void *) x)
663 #define DEFAULT_VFS_MODULE_NAME "/[Default VFS]/"
665 #include "vfs_macros.h"