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