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.*/
81 #define SMB_VFS_INTERFACE_VERSION 22
84 /* to bug old modules which are trying to compile with the old functions */
85 #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 };
86 #define lp_parm_string __ERROR_please_port_lp_parm_string_to_lp_parm_const_string_or_lp_parm_talloc_string { \
87 __ERROR_please_port_lp_parm_string_to_lp_parm_const_string_or_lp_parm_talloc_string };
88 #define lp_vfs_options __ERROR_please_donot_use_lp_vfs_options_anymore_use_lp_parm_xxxx_functions_instead { \
89 __ERROR_please_donot_use_lp_vfs_options_anymore_use_lp_parm_xxxx_functions_instead };
92 All intercepted VFS operations must be declared as static functions inside module source
93 in order to keep smbd namespace unpolluted. See source of audit, extd_audit, fake_perms and recycle
94 example VFS modules for more details.
97 /* VFS operations structure */
99 struct vfs_handle_struct;
100 struct connection_struct;
102 struct security_descriptor;
103 struct vfs_statvfs_struct;
106 Available VFS operations. These values must be in sync with vfs_ops struct
107 (struct vfs_fn_pointers and struct vfs_handle_pointers inside of struct vfs_ops).
108 In particular, if new operations are added to vfs_ops, appropriate constants
109 should be added to vfs_op_type so that order of them kept same as in vfs_ops.
112 typedef enum _vfs_op_type {
113 SMB_VFS_OP_NOOP = -1,
115 /* Disk operations */
117 SMB_VFS_OP_CONNECT = 0,
118 SMB_VFS_OP_DISCONNECT,
119 SMB_VFS_OP_DISK_FREE,
120 SMB_VFS_OP_GET_QUOTA,
121 SMB_VFS_OP_SET_QUOTA,
122 SMB_VFS_OP_GET_SHADOW_COPY_DATA,
125 /* Directory operations */
131 SMB_VFS_OP_REWINDDIR,
136 /* File operations */
161 SMB_VFS_OP_FTRUNCATE,
163 SMB_VFS_OP_KERNEL_FLOCK,
164 SMB_VFS_OP_LINUX_SETLEASE,
171 SMB_VFS_OP_NOTIFY_WATCH,
173 SMB_VFS_OP_FILE_ID_CREATE,
175 /* NT ACL operations. */
177 SMB_VFS_OP_FGET_NT_ACL,
178 SMB_VFS_OP_GET_NT_ACL,
179 SMB_VFS_OP_FSET_NT_ACL,
180 SMB_VFS_OP_SET_NT_ACL,
182 /* POSIX ACL operations. */
184 SMB_VFS_OP_CHMOD_ACL,
185 SMB_VFS_OP_FCHMOD_ACL,
187 SMB_VFS_OP_SYS_ACL_GET_ENTRY,
188 SMB_VFS_OP_SYS_ACL_GET_TAG_TYPE,
189 SMB_VFS_OP_SYS_ACL_GET_PERMSET,
190 SMB_VFS_OP_SYS_ACL_GET_QUALIFIER,
191 SMB_VFS_OP_SYS_ACL_GET_FILE,
192 SMB_VFS_OP_SYS_ACL_GET_FD,
193 SMB_VFS_OP_SYS_ACL_CLEAR_PERMS,
194 SMB_VFS_OP_SYS_ACL_ADD_PERM,
195 SMB_VFS_OP_SYS_ACL_TO_TEXT,
196 SMB_VFS_OP_SYS_ACL_INIT,
197 SMB_VFS_OP_SYS_ACL_CREATE_ENTRY,
198 SMB_VFS_OP_SYS_ACL_SET_TAG_TYPE,
199 SMB_VFS_OP_SYS_ACL_SET_QUALIFIER,
200 SMB_VFS_OP_SYS_ACL_SET_PERMSET,
201 SMB_VFS_OP_SYS_ACL_VALID,
202 SMB_VFS_OP_SYS_ACL_SET_FILE,
203 SMB_VFS_OP_SYS_ACL_SET_FD,
204 SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
205 SMB_VFS_OP_SYS_ACL_GET_PERM,
206 SMB_VFS_OP_SYS_ACL_FREE_TEXT,
207 SMB_VFS_OP_SYS_ACL_FREE_ACL,
208 SMB_VFS_OP_SYS_ACL_FREE_QUALIFIER,
212 SMB_VFS_OP_LGETXATTR,
213 SMB_VFS_OP_FGETXATTR,
214 SMB_VFS_OP_LISTXATTR,
215 SMB_VFS_OP_LLISTXATTR,
216 SMB_VFS_OP_FLISTXATTR,
217 SMB_VFS_OP_REMOVEXATTR,
218 SMB_VFS_OP_LREMOVEXATTR,
219 SMB_VFS_OP_FREMOVEXATTR,
221 SMB_VFS_OP_LSETXATTR,
222 SMB_VFS_OP_FSETXATTR,
226 SMB_VFS_OP_AIO_WRITE,
227 SMB_VFS_OP_AIO_RETURN,
228 SMB_VFS_OP_AIO_CANCEL,
229 SMB_VFS_OP_AIO_ERROR,
230 SMB_VFS_OP_AIO_FSYNC,
231 SMB_VFS_OP_AIO_SUSPEND,
233 /* This should always be last enum value */
239 Please keep vfs_op_type, struct vfs_fn_pointers and struct vfs_handles_pointers in sync.
242 struct vfs_fn_pointers {
243 /* Disk operations */
245 int (*connect_fn)(struct vfs_handle_struct *handle, const char *service, const char *user);
246 void (*disconnect)(struct vfs_handle_struct *handle);
247 SMB_BIG_UINT (*disk_free)(struct vfs_handle_struct *handle, const char *path, bool small_query, SMB_BIG_UINT *bsize,
248 SMB_BIG_UINT *dfree, SMB_BIG_UINT *dsize);
249 int (*get_quota)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
250 int (*set_quota)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
251 int (*get_shadow_copy_data)(struct vfs_handle_struct *handle, struct files_struct *fsp, SHADOW_COPY_DATA *shadow_copy_data, bool labels);
252 int (*statvfs)(struct vfs_handle_struct *handle, const char *path, struct vfs_statvfs_struct *statbuf);
254 /* Directory operations */
256 SMB_STRUCT_DIR *(*opendir)(struct vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attributes);
257 SMB_STRUCT_DIRENT *(*readdir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
258 void (*seekdir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp, long offset);
259 long (*telldir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
260 void (*rewind_dir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
261 int (*mkdir)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
262 int (*rmdir)(struct vfs_handle_struct *handle, const char *path);
263 int (*closedir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dir);
265 /* File operations */
267 int (*open)(struct vfs_handle_struct *handle, const char *fname, files_struct *fsp, int flags, mode_t mode);
268 int (*close_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd);
269 ssize_t (*read)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, void *data, size_t n);
270 ssize_t (*pread)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, void *data, size_t n, SMB_OFF_T offset);
271 ssize_t (*write)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, const void *data, size_t n);
272 ssize_t (*pwrite)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, const void *data, size_t n, SMB_OFF_T offset);
273 SMB_OFF_T (*lseek)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_OFF_T offset, int whence);
274 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);
275 ssize_t (*recvfile)(struct vfs_handle_struct *handle, int fromfd, files_struct *fsp, int tofd, SMB_OFF_T offset, size_t count);
276 int (*rename)(struct vfs_handle_struct *handle, const char *oldname, const char *newname);
277 int (*fsync)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd);
278 int (*stat)(struct vfs_handle_struct *handle, const char *fname, SMB_STRUCT_STAT *sbuf);
279 int (*fstat)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_STRUCT_STAT *sbuf);
280 int (*lstat)(struct vfs_handle_struct *handle, const char *path, SMB_STRUCT_STAT *sbuf);
281 int (*unlink)(struct vfs_handle_struct *handle, const char *path);
282 int (*chmod)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
283 int (*fchmod)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, mode_t mode);
284 int (*chown)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
285 int (*fchown)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, uid_t uid, gid_t gid);
286 int (*lchown)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
287 int (*chdir)(struct vfs_handle_struct *handle, const char *path);
288 char *(*getwd)(struct vfs_handle_struct *handle, char *buf);
289 int (*ntimes)(struct vfs_handle_struct *handle, const char *path, const struct timespec ts[2]);
290 int (*ftruncate)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_OFF_T offset);
291 bool (*lock)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, int op, SMB_OFF_T offset, SMB_OFF_T count, int type);
292 int (*kernel_flock)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, uint32 share_mode);
293 int (*linux_setlease)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, int leasetype);
294 bool (*getlock)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid);
295 int (*symlink)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
296 int (*readlink)(struct vfs_handle_struct *handle, const char *path, char *buf, size_t bufsiz);
297 int (*link)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
298 int (*mknod)(struct vfs_handle_struct *handle, const char *path, mode_t mode, SMB_DEV_T dev);
299 char *(*realpath)(struct vfs_handle_struct *handle, const char *path, char *resolved_path);
300 NTSTATUS (*notify_watch)(struct vfs_handle_struct *handle,
301 struct sys_notify_context *ctx,
302 struct notify_entry *e,
303 void (*callback)(struct sys_notify_context *ctx,
305 struct notify_event *ev),
306 void *private_data, void *handle_p);
307 int (*chflags)(struct vfs_handle_struct *handle, const char *path, unsigned int flags);
308 struct file_id (*file_id_create)(struct vfs_handle_struct *handle, SMB_DEV_T dev, SMB_INO_T inode);
310 /* NT ACL operations. */
312 NTSTATUS (*fget_nt_acl)(struct vfs_handle_struct *handle,
313 struct files_struct *fsp, int fd,
314 uint32 security_info,
315 struct security_descriptor **ppdesc);
316 NTSTATUS (*get_nt_acl)(struct vfs_handle_struct *handle,
318 uint32 security_info,
319 struct security_descriptor **ppdesc);
320 NTSTATUS (*fset_nt_acl)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, uint32 security_info_sent, struct security_descriptor *psd);
321 NTSTATUS (*set_nt_acl)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, uint32 security_info_sent, struct security_descriptor *psd);
323 /* POSIX ACL operations. */
325 int (*chmod_acl)(struct vfs_handle_struct *handle, const char *name, mode_t mode);
326 int (*fchmod_acl)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, mode_t mode);
328 int (*sys_acl_get_entry)(struct vfs_handle_struct *handle, SMB_ACL_T theacl, int entry_id, SMB_ACL_ENTRY_T *entry_p);
329 int (*sys_acl_get_tag_type)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_TAG_T *tag_type_p);
330 int (*sys_acl_get_permset)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_PERMSET_T *permset_p);
331 void * (*sys_acl_get_qualifier)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d);
332 SMB_ACL_T (*sys_acl_get_file)(struct vfs_handle_struct *handle, const char *path_p, SMB_ACL_TYPE_T type);
333 SMB_ACL_T (*sys_acl_get_fd)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd);
334 int (*sys_acl_clear_perms)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset);
335 int (*sys_acl_add_perm)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
336 char * (*sys_acl_to_text)(struct vfs_handle_struct *handle, SMB_ACL_T theacl, ssize_t *plen);
337 SMB_ACL_T (*sys_acl_init)(struct vfs_handle_struct *handle, int count);
338 int (*sys_acl_create_entry)(struct vfs_handle_struct *handle, SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry);
339 int (*sys_acl_set_tag_type)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_TAG_T tagtype);
340 int (*sys_acl_set_qualifier)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, void *qual);
341 int (*sys_acl_set_permset)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_PERMSET_T permset);
342 int (*sys_acl_valid)(struct vfs_handle_struct *handle, SMB_ACL_T theacl );
343 int (*sys_acl_set_file)(struct vfs_handle_struct *handle, const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl);
344 int (*sys_acl_set_fd)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_ACL_T theacl);
345 int (*sys_acl_delete_def_file)(struct vfs_handle_struct *handle, const char *path);
346 int (*sys_acl_get_perm)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
347 int (*sys_acl_free_text)(struct vfs_handle_struct *handle, char *text);
348 int (*sys_acl_free_acl)(struct vfs_handle_struct *handle, SMB_ACL_T posix_acl);
349 int (*sys_acl_free_qualifier)(struct vfs_handle_struct *handle, void *qualifier, SMB_ACL_TAG_T tagtype);
352 ssize_t (*getxattr)(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size);
353 ssize_t (*lgetxattr)(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size);
354 ssize_t (*fgetxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp,int fd, const char *name, void *value, size_t size);
355 ssize_t (*listxattr)(struct vfs_handle_struct *handle, const char *path, char *list, size_t size);
356 ssize_t (*llistxattr)(struct vfs_handle_struct *handle, const char *path, char *list, size_t size);
357 ssize_t (*flistxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp,int fd, char *list, size_t size);
358 int (*removexattr)(struct vfs_handle_struct *handle, const char *path, const char *name);
359 int (*lremovexattr)(struct vfs_handle_struct *handle, const char *path, const char *name);
360 int (*fremovexattr)(struct vfs_handle_struct *handle, struct files_struct *fsp,int filedes, const char *name);
361 int (*setxattr)(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags);
362 int (*lsetxattr)(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags);
363 int (*fsetxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp,int filedes, const char *name, const void *value, size_t size, int flags);
366 int (*aio_read)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
367 int (*aio_write)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
368 ssize_t (*aio_return_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
369 int (*aio_cancel)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_STRUCT_AIOCB *aiocb);
370 int (*aio_error_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
371 int (*aio_fsync)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_STRUCT_AIOCB *aiocb);
372 int (*aio_suspend)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_AIOCB * const aiocb[], int n, const struct timespec *timeout);
376 struct vfs_handles_pointers {
377 /* Disk operations */
379 struct vfs_handle_struct *connect_hnd;
380 struct vfs_handle_struct *disconnect;
381 struct vfs_handle_struct *disk_free;
382 struct vfs_handle_struct *get_quota;
383 struct vfs_handle_struct *set_quota;
384 struct vfs_handle_struct *get_shadow_copy_data;
385 struct vfs_handle_struct *statvfs;
387 /* Directory operations */
389 struct vfs_handle_struct *opendir;
390 struct vfs_handle_struct *readdir;
391 struct vfs_handle_struct *seekdir;
392 struct vfs_handle_struct *telldir;
393 struct vfs_handle_struct *rewind_dir;
394 struct vfs_handle_struct *mkdir;
395 struct vfs_handle_struct *rmdir;
396 struct vfs_handle_struct *closedir;
398 /* File operations */
400 struct vfs_handle_struct *open;
401 struct vfs_handle_struct *close_hnd;
402 struct vfs_handle_struct *read;
403 struct vfs_handle_struct *pread;
404 struct vfs_handle_struct *write;
405 struct vfs_handle_struct *pwrite;
406 struct vfs_handle_struct *lseek;
407 struct vfs_handle_struct *sendfile;
408 struct vfs_handle_struct *recvfile;
409 struct vfs_handle_struct *rename;
410 struct vfs_handle_struct *fsync;
411 struct vfs_handle_struct *stat;
412 struct vfs_handle_struct *fstat;
413 struct vfs_handle_struct *lstat;
414 struct vfs_handle_struct *unlink;
415 struct vfs_handle_struct *chmod;
416 struct vfs_handle_struct *fchmod;
417 struct vfs_handle_struct *chown;
418 struct vfs_handle_struct *fchown;
419 struct vfs_handle_struct *lchown;
420 struct vfs_handle_struct *chdir;
421 struct vfs_handle_struct *getwd;
422 struct vfs_handle_struct *ntimes;
423 struct vfs_handle_struct *ftruncate;
424 struct vfs_handle_struct *lock;
425 struct vfs_handle_struct *kernel_flock;
426 struct vfs_handle_struct *linux_setlease;
427 struct vfs_handle_struct *getlock;
428 struct vfs_handle_struct *symlink;
429 struct vfs_handle_struct *readlink;
430 struct vfs_handle_struct *link;
431 struct vfs_handle_struct *mknod;
432 struct vfs_handle_struct *realpath;
433 struct vfs_handle_struct *notify_watch;
434 struct vfs_handle_struct *chflags;
435 struct vfs_handle_struct *file_id_create;
437 /* NT ACL operations. */
439 struct vfs_handle_struct *fget_nt_acl;
440 struct vfs_handle_struct *get_nt_acl;
441 struct vfs_handle_struct *fset_nt_acl;
442 struct vfs_handle_struct *set_nt_acl;
444 /* POSIX ACL operations. */
446 struct vfs_handle_struct *chmod_acl;
447 struct vfs_handle_struct *fchmod_acl;
449 struct vfs_handle_struct *sys_acl_get_entry;
450 struct vfs_handle_struct *sys_acl_get_tag_type;
451 struct vfs_handle_struct *sys_acl_get_permset;
452 struct vfs_handle_struct *sys_acl_get_qualifier;
453 struct vfs_handle_struct *sys_acl_get_file;
454 struct vfs_handle_struct *sys_acl_get_fd;
455 struct vfs_handle_struct *sys_acl_clear_perms;
456 struct vfs_handle_struct *sys_acl_add_perm;
457 struct vfs_handle_struct *sys_acl_to_text;
458 struct vfs_handle_struct *sys_acl_init;
459 struct vfs_handle_struct *sys_acl_create_entry;
460 struct vfs_handle_struct *sys_acl_set_tag_type;
461 struct vfs_handle_struct *sys_acl_set_qualifier;
462 struct vfs_handle_struct *sys_acl_set_permset;
463 struct vfs_handle_struct *sys_acl_valid;
464 struct vfs_handle_struct *sys_acl_set_file;
465 struct vfs_handle_struct *sys_acl_set_fd;
466 struct vfs_handle_struct *sys_acl_delete_def_file;
467 struct vfs_handle_struct *sys_acl_get_perm;
468 struct vfs_handle_struct *sys_acl_free_text;
469 struct vfs_handle_struct *sys_acl_free_acl;
470 struct vfs_handle_struct *sys_acl_free_qualifier;
473 struct vfs_handle_struct *getxattr;
474 struct vfs_handle_struct *lgetxattr;
475 struct vfs_handle_struct *fgetxattr;
476 struct vfs_handle_struct *listxattr;
477 struct vfs_handle_struct *llistxattr;
478 struct vfs_handle_struct *flistxattr;
479 struct vfs_handle_struct *removexattr;
480 struct vfs_handle_struct *lremovexattr;
481 struct vfs_handle_struct *fremovexattr;
482 struct vfs_handle_struct *setxattr;
483 struct vfs_handle_struct *lsetxattr;
484 struct vfs_handle_struct *fsetxattr;
487 struct vfs_handle_struct *aio_read;
488 struct vfs_handle_struct *aio_write;
489 struct vfs_handle_struct *aio_return;
490 struct vfs_handle_struct *aio_cancel;
491 struct vfs_handle_struct *aio_error;
492 struct vfs_handle_struct *aio_fsync;
493 struct vfs_handle_struct *aio_suspend;
498 Possible VFS operation layers (per-operation)
500 These values are used by VFS subsystem when building vfs_ops for connection
501 from multiple VFS modules. Internally, Samba differentiates only opaque and
502 transparent layers at this process. Other types are used for providing better
503 diagnosing facilities.
505 Most modules will provide transparent layers. Opaque layer is for modules
506 which implement actual file system calls (like DB-based VFS). For example,
507 default POSIX VFS which is built in into Samba is an opaque VFS module.
509 Other layer types (audit, splitter, scanner) were designed to provide different
510 degree of transparency and for diagnosing VFS module behaviour.
512 Each module can implement several layers at the same time provided that only
513 one layer is used per each operation.
517 typedef enum _vfs_op_layer {
518 SMB_VFS_LAYER_NOOP = -1, /* - For using in VFS module to indicate end of array */
519 /* of operations description */
520 SMB_VFS_LAYER_OPAQUE = 0, /* - Final level, does not call anything beyond itself */
521 SMB_VFS_LAYER_TRANSPARENT, /* - Normal operation, calls underlying layer after */
522 /* possibly changing passed data */
523 SMB_VFS_LAYER_LOGGER, /* - Logs data, calls underlying layer, logging may not */
525 SMB_VFS_LAYER_SPLITTER, /* - Splits operation, calls underlying layer _and_ own facility, */
526 /* then combines result */
527 SMB_VFS_LAYER_SCANNER /* - Checks data and possibly initiates additional */
528 /* file activity like logging to files _inside_ samba VFS */
532 VFS operation description. Each VFS module registers an array of vfs_op_tuple to VFS subsystem,
533 which describes all operations this module is willing to intercept.
534 VFS subsystem initializes then the conn->vfs_ops and conn->vfs_opaque_ops structs
535 using this information.
538 typedef struct vfs_op_tuple {
545 typedef struct vfs_handle_struct {
546 struct vfs_handle_struct *next, *prev;
548 struct vfs_ops vfs_next;
549 struct connection_struct *conn;
551 void (*free_data)(void **data);
555 typedef struct vfs_statvfs_struct {
556 /* For undefined recommended transfer size return -1 in that field */
557 uint32 OptimalTransferSize; /* bsize on some os, iosize on other os */
561 The next three fields are in terms of the block size.
562 (above). If block size is unknown, 4096 would be a
563 reasonable block size for a server to report.
564 Note that returning the blocks/blocksavail removes need
565 to make a second call (to QFSInfo level 0x103 to get this info.
566 UserBlockAvail is typically less than or equal to BlocksAvail,
567 if no distinction is made return the same value in each.
570 SMB_BIG_UINT TotalBlocks;
571 SMB_BIG_UINT BlocksAvail; /* bfree */
572 SMB_BIG_UINT UserBlocksAvail; /* bavail */
574 /* For undefined Node fields or FSID return -1 */
575 SMB_BIG_UINT TotalFileNodes;
576 SMB_BIG_UINT FreeFileNodes;
577 SMB_BIG_UINT FsIdentifier; /* fsid */
578 /* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
579 /* NB flags can come from FILE_SYSTEM_DEVICE_INFO call */
582 } vfs_statvfs_struct;
584 /* Add a new FSP extension of the given type. Returns a pointer to the
587 #define VFS_ADD_FSP_EXTENSION(handle, fsp, type) \
588 vfs_add_fsp_extension_notype(handle, (fsp), sizeof(type))
590 /* Return a pointer to the existing FSP extension data. */
591 #define VFS_FETCH_FSP_EXTENSION(handle, fsp) \
592 vfs_fetch_fsp_extension(handle, (fsp))
594 /* Return the talloc context associated with an FSP extension. */
595 #define VFS_MEMCTX_FSP_EXTENSION(handle, fsp) \
596 vfs_memctx_fsp_extension(handle, (fsp))
598 /* Remove and destroy an FSP extension. */
599 #define VFS_REMOVE_FSP_EXTENSION(handle, fsp) \
600 vfs_remove_fsp_extension((handle), (fsp))
602 #define SMB_VFS_HANDLE_GET_DATA(handle, datap, type, ret) { \
603 if (!(handle)||((datap=(type *)(handle)->data)==NULL)) { \
604 DEBUG(0,("%s() failed to get vfs_handle->data!\n",FUNCTION_MACRO)); \
609 #define SMB_VFS_HANDLE_SET_DATA(handle, datap, free_fn, type, ret) { \
611 DEBUG(0,("%s() failed to set handle->data!\n",FUNCTION_MACRO)); \
614 if ((handle)->free_data) { \
615 (handle)->free_data(&(handle)->data); \
617 (handle)->data = (void *)datap; \
618 (handle)->free_data = free_fn; \
622 #define SMB_VFS_HANDLE_FREE_DATA(handle) { \
623 if ((handle) && (handle)->free_data) { \
624 (handle)->free_data(&(handle)->data); \
628 /* Check whether module-specific data handle was already allocated or not */
629 #define SMB_VFS_HANDLE_TEST_DATA(handle) ( !(handle) || !(handle)->data ? False : True )
631 #define SMB_VFS_OP(x) ((void *) x)
633 #define DEFAULT_VFS_MODULE_NAME "/[Default VFS]/"
635 #include "vfs_macros.h"