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 2 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, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 This work was sponsored by Optifacio Software Services, Inc.
29 /* Avoid conflict with an AIX include file */
36 * As we're now (thanks Andrew ! :-) using file_structs and connection
37 * structs in the vfs - then anyone writing a vfs must include includes.h...
41 * This next constant specifies the version number of the VFS interface
42 * this smbd will load. Increment this if *ANY* changes are made to the
45 * If you change anything here, please also update modules/vfs_full_audit.c.
49 /* Changed to version 2 for CIFS UNIX extensions (mknod and link added). JRA. */
50 /* Changed to version 3 for POSIX acl extensions. JRA. */
51 /* Changed to version 4 for cascaded VFS interface. Alexander Bokovoy. */
52 /* Changed to version 5 for sendfile addition. JRA. */
53 /* Changed to version 6 for the new module system, fixed cascading and quota functions. --metze */
54 /* Changed to version 7 to include the get_nt_acl info parameter. JRA. */
55 /* Changed to version 8 includes EA calls. JRA. */
56 /* Changed to version 9 to include the get_shadow_data call. --metze */
57 /* Changed to version 10 to include pread/pwrite calls. */
58 /* Changed to version 11 to include seekdir/telldir/rewinddir calls. JRA */
59 /* Changed to version 12 to add mask and attributes to opendir(). JRA
60 Also include aio calls. JRA. */
61 /* Changed to version 13 as the internal structure of files_struct has changed. JRA */
62 /* Changed to version 14 as we had to change DIR to SMB_STRUCT_DIR. JRA */
63 /* Changed to version 15 as we added the statvfs call. JRA */
64 /* Changed to version 16 as we added the getlock call. JRA */
65 /* Changed to version 17 as we removed redundant connection_struct parameters. --jpeach */
66 /* Changed to version 18 to add fsp parameter to the open call -- jpeach
67 Also include kernel_flock call - jmcd */
68 /* Changed to version 19, kernel change notify has been merged */
69 #define SMB_VFS_INTERFACE_VERSION 19
72 /* to bug old modules which are trying to compile with the old functions */
73 #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 };
74 #define lp_parm_string __ERROR_please_port_lp_parm_string_to_lp_parm_const_string_or_lp_parm_talloc_string { \
75 __ERROR_please_port_lp_parm_string_to_lp_parm_const_string_or_lp_parm_talloc_string };
76 #define lp_vfs_options __ERROR_please_donot_use_lp_vfs_options_anymore_use_lp_parm_xxxx_functions_instead { \
77 __ERROR_please_donot_use_lp_vfs_options_anymore_use_lp_parm_xxxx_functions_instead };
80 All intercepted VFS operations must be declared as static functions inside module source
81 in order to keep smbd namespace unpolluted. See source of audit, extd_audit, fake_perms and recycle
82 example VFS modules for more details.
85 /* VFS operations structure */
87 struct vfs_handle_struct;
88 struct connection_struct;
90 struct security_descriptor;
91 struct vfs_statvfs_struct;
94 Available VFS operations. These values must be in sync with vfs_ops struct
95 (struct vfs_fn_pointers and struct vfs_handle_pointers inside of struct vfs_ops).
96 In particular, if new operations are added to vfs_ops, appropriate constants
97 should be added to vfs_op_type so that order of them kept same as in vfs_ops.
100 typedef enum _vfs_op_type {
101 SMB_VFS_OP_NOOP = -1,
103 /* Disk operations */
105 SMB_VFS_OP_CONNECT = 0,
106 SMB_VFS_OP_DISCONNECT,
107 SMB_VFS_OP_DISK_FREE,
108 SMB_VFS_OP_GET_QUOTA,
109 SMB_VFS_OP_SET_QUOTA,
110 SMB_VFS_OP_GET_SHADOW_COPY_DATA,
113 /* Directory operations */
119 SMB_VFS_OP_REWINDDIR,
124 /* File operations */
147 SMB_VFS_OP_FTRUNCATE,
149 SMB_VFS_OP_KERNEL_FLOCK,
156 SMB_VFS_OP_NOTIFY_WATCH,
158 /* NT ACL operations. */
160 SMB_VFS_OP_FGET_NT_ACL,
161 SMB_VFS_OP_GET_NT_ACL,
162 SMB_VFS_OP_FSET_NT_ACL,
163 SMB_VFS_OP_SET_NT_ACL,
165 /* POSIX ACL operations. */
167 SMB_VFS_OP_CHMOD_ACL,
168 SMB_VFS_OP_FCHMOD_ACL,
170 SMB_VFS_OP_SYS_ACL_GET_ENTRY,
171 SMB_VFS_OP_SYS_ACL_GET_TAG_TYPE,
172 SMB_VFS_OP_SYS_ACL_GET_PERMSET,
173 SMB_VFS_OP_SYS_ACL_GET_QUALIFIER,
174 SMB_VFS_OP_SYS_ACL_GET_FILE,
175 SMB_VFS_OP_SYS_ACL_GET_FD,
176 SMB_VFS_OP_SYS_ACL_CLEAR_PERMS,
177 SMB_VFS_OP_SYS_ACL_ADD_PERM,
178 SMB_VFS_OP_SYS_ACL_TO_TEXT,
179 SMB_VFS_OP_SYS_ACL_INIT,
180 SMB_VFS_OP_SYS_ACL_CREATE_ENTRY,
181 SMB_VFS_OP_SYS_ACL_SET_TAG_TYPE,
182 SMB_VFS_OP_SYS_ACL_SET_QUALIFIER,
183 SMB_VFS_OP_SYS_ACL_SET_PERMSET,
184 SMB_VFS_OP_SYS_ACL_VALID,
185 SMB_VFS_OP_SYS_ACL_SET_FILE,
186 SMB_VFS_OP_SYS_ACL_SET_FD,
187 SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
188 SMB_VFS_OP_SYS_ACL_GET_PERM,
189 SMB_VFS_OP_SYS_ACL_FREE_TEXT,
190 SMB_VFS_OP_SYS_ACL_FREE_ACL,
191 SMB_VFS_OP_SYS_ACL_FREE_QUALIFIER,
195 SMB_VFS_OP_LGETXATTR,
196 SMB_VFS_OP_FGETXATTR,
197 SMB_VFS_OP_LISTXATTR,
198 SMB_VFS_OP_LLISTXATTR,
199 SMB_VFS_OP_FLISTXATTR,
200 SMB_VFS_OP_REMOVEXATTR,
201 SMB_VFS_OP_LREMOVEXATTR,
202 SMB_VFS_OP_FREMOVEXATTR,
204 SMB_VFS_OP_LSETXATTR,
205 SMB_VFS_OP_FSETXATTR,
209 SMB_VFS_OP_AIO_WRITE,
210 SMB_VFS_OP_AIO_RETURN,
211 SMB_VFS_OP_AIO_CANCEL,
212 SMB_VFS_OP_AIO_ERROR,
213 SMB_VFS_OP_AIO_FSYNC,
214 SMB_VFS_OP_AIO_SUSPEND,
216 /* This should always be last enum value */
222 Please keep vfs_op_type, struct vfs_fn_pointers and struct vfs_handles_pointers in sync.
225 struct vfs_fn_pointers {
226 /* Disk operations */
228 int (*connect_fn)(struct vfs_handle_struct *handle, const char *service, const char *user);
229 void (*disconnect)(struct vfs_handle_struct *handle);
230 SMB_BIG_UINT (*disk_free)(struct vfs_handle_struct *handle, const char *path, BOOL small_query, SMB_BIG_UINT *bsize,
231 SMB_BIG_UINT *dfree, SMB_BIG_UINT *dsize);
232 int (*get_quota)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
233 int (*set_quota)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
234 int (*get_shadow_copy_data)(struct vfs_handle_struct *handle, struct files_struct *fsp, SHADOW_COPY_DATA *shadow_copy_data, BOOL labels);
235 int (*statvfs)(struct vfs_handle_struct *handle, const char *path, struct vfs_statvfs_struct *statbuf);
237 /* Directory operations */
239 SMB_STRUCT_DIR *(*opendir)(struct vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attributes);
240 SMB_STRUCT_DIRENT *(*readdir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
241 void (*seekdir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp, long offset);
242 long (*telldir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
243 void (*rewind_dir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
244 int (*mkdir)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
245 int (*rmdir)(struct vfs_handle_struct *handle, const char *path);
246 int (*closedir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dir);
248 /* File operations */
250 int (*open)(struct vfs_handle_struct *handle, const char *fname, files_struct *fsp, int flags, mode_t mode);
251 int (*close_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd);
252 ssize_t (*read)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, void *data, size_t n);
253 ssize_t (*pread)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, void *data, size_t n, SMB_OFF_T offset);
254 ssize_t (*write)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, const void *data, size_t n);
255 ssize_t (*pwrite)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, const void *data, size_t n, SMB_OFF_T offset);
256 SMB_OFF_T (*lseek)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_OFF_T offset, int whence);
257 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);
258 int (*rename)(struct vfs_handle_struct *handle, const char *oldname, const char *newname);
259 int (*fsync)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd);
260 int (*stat)(struct vfs_handle_struct *handle, const char *fname, SMB_STRUCT_STAT *sbuf);
261 int (*fstat)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_STRUCT_STAT *sbuf);
262 int (*lstat)(struct vfs_handle_struct *handle, const char *path, SMB_STRUCT_STAT *sbuf);
263 int (*unlink)(struct vfs_handle_struct *handle, const char *path);
264 int (*chmod)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
265 int (*fchmod)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, mode_t mode);
266 int (*chown)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
267 int (*fchown)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, uid_t uid, gid_t gid);
268 int (*chdir)(struct vfs_handle_struct *handle, const char *path);
269 char *(*getwd)(struct vfs_handle_struct *handle, char *buf);
270 int (*utime)(struct vfs_handle_struct *handle, const char *path, struct utimbuf *times);
271 int (*ftruncate)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_OFF_T offset);
272 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);
273 int (*kernel_flock)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, uint32 share_mode);
274 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);
275 int (*symlink)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
276 int (*readlink)(struct vfs_handle_struct *handle, const char *path, char *buf, size_t bufsiz);
277 int (*link)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
278 int (*mknod)(struct vfs_handle_struct *handle, const char *path, mode_t mode, SMB_DEV_T dev);
279 char *(*realpath)(struct vfs_handle_struct *handle, const char *path, char *resolved_path);
280 NTSTATUS (*notify_watch)(struct vfs_handle_struct *handle,
281 struct sys_notify_context *ctx,
282 struct notify_entry *e,
283 void (*callback)(struct sys_notify_context *ctx,
285 struct notify_event *ev),
286 void *private_data, void *handle_p);
288 /* NT ACL operations. */
290 size_t (*fget_nt_acl)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, uint32 security_info, struct security_descriptor **ppdesc);
291 size_t (*get_nt_acl)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, uint32 security_info, struct security_descriptor **ppdesc);
292 BOOL (*fset_nt_acl)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, uint32 security_info_sent, struct security_descriptor *psd);
293 BOOL (*set_nt_acl)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, uint32 security_info_sent, struct security_descriptor *psd);
295 /* POSIX ACL operations. */
297 int (*chmod_acl)(struct vfs_handle_struct *handle, const char *name, mode_t mode);
298 int (*fchmod_acl)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, mode_t mode);
300 int (*sys_acl_get_entry)(struct vfs_handle_struct *handle, SMB_ACL_T theacl, int entry_id, SMB_ACL_ENTRY_T *entry_p);
301 int (*sys_acl_get_tag_type)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_TAG_T *tag_type_p);
302 int (*sys_acl_get_permset)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_PERMSET_T *permset_p);
303 void * (*sys_acl_get_qualifier)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d);
304 SMB_ACL_T (*sys_acl_get_file)(struct vfs_handle_struct *handle, const char *path_p, SMB_ACL_TYPE_T type);
305 SMB_ACL_T (*sys_acl_get_fd)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd);
306 int (*sys_acl_clear_perms)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset);
307 int (*sys_acl_add_perm)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
308 char * (*sys_acl_to_text)(struct vfs_handle_struct *handle, SMB_ACL_T theacl, ssize_t *plen);
309 SMB_ACL_T (*sys_acl_init)(struct vfs_handle_struct *handle, int count);
310 int (*sys_acl_create_entry)(struct vfs_handle_struct *handle, SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry);
311 int (*sys_acl_set_tag_type)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_TAG_T tagtype);
312 int (*sys_acl_set_qualifier)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, void *qual);
313 int (*sys_acl_set_permset)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_PERMSET_T permset);
314 int (*sys_acl_valid)(struct vfs_handle_struct *handle, SMB_ACL_T theacl );
315 int (*sys_acl_set_file)(struct vfs_handle_struct *handle, const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl);
316 int (*sys_acl_set_fd)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_ACL_T theacl);
317 int (*sys_acl_delete_def_file)(struct vfs_handle_struct *handle, const char *path);
318 int (*sys_acl_get_perm)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
319 int (*sys_acl_free_text)(struct vfs_handle_struct *handle, char *text);
320 int (*sys_acl_free_acl)(struct vfs_handle_struct *handle, SMB_ACL_T posix_acl);
321 int (*sys_acl_free_qualifier)(struct vfs_handle_struct *handle, void *qualifier, SMB_ACL_TAG_T tagtype);
324 ssize_t (*getxattr)(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size);
325 ssize_t (*lgetxattr)(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size);
326 ssize_t (*fgetxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp,int fd, const char *name, void *value, size_t size);
327 ssize_t (*listxattr)(struct vfs_handle_struct *handle, const char *path, char *list, size_t size);
328 ssize_t (*llistxattr)(struct vfs_handle_struct *handle, const char *path, char *list, size_t size);
329 ssize_t (*flistxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp,int fd, char *list, size_t size);
330 int (*removexattr)(struct vfs_handle_struct *handle, const char *path, const char *name);
331 int (*lremovexattr)(struct vfs_handle_struct *handle, const char *path, const char *name);
332 int (*fremovexattr)(struct vfs_handle_struct *handle, struct files_struct *fsp,int filedes, const char *name);
333 int (*setxattr)(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags);
334 int (*lsetxattr)(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags);
335 int (*fsetxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp,int filedes, const char *name, const void *value, size_t size, int flags);
338 int (*aio_read)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
339 int (*aio_write)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
340 ssize_t (*aio_return_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
341 int (*aio_cancel)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_STRUCT_AIOCB *aiocb);
342 int (*aio_error_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
343 int (*aio_fsync)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_STRUCT_AIOCB *aiocb);
344 int (*aio_suspend)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_AIOCB * const aiocb[], int n, const struct timespec *timeout);
348 struct vfs_handles_pointers {
349 /* Disk operations */
351 struct vfs_handle_struct *connect_hnd;
352 struct vfs_handle_struct *disconnect;
353 struct vfs_handle_struct *disk_free;
354 struct vfs_handle_struct *get_quota;
355 struct vfs_handle_struct *set_quota;
356 struct vfs_handle_struct *get_shadow_copy_data;
357 struct vfs_handle_struct *statvfs;
359 /* Directory operations */
361 struct vfs_handle_struct *opendir;
362 struct vfs_handle_struct *readdir;
363 struct vfs_handle_struct *seekdir;
364 struct vfs_handle_struct *telldir;
365 struct vfs_handle_struct *rewind_dir;
366 struct vfs_handle_struct *mkdir;
367 struct vfs_handle_struct *rmdir;
368 struct vfs_handle_struct *closedir;
370 /* File operations */
372 struct vfs_handle_struct *open;
373 struct vfs_handle_struct *close_hnd;
374 struct vfs_handle_struct *read;
375 struct vfs_handle_struct *pread;
376 struct vfs_handle_struct *write;
377 struct vfs_handle_struct *pwrite;
378 struct vfs_handle_struct *lseek;
379 struct vfs_handle_struct *sendfile;
380 struct vfs_handle_struct *rename;
381 struct vfs_handle_struct *fsync;
382 struct vfs_handle_struct *stat;
383 struct vfs_handle_struct *fstat;
384 struct vfs_handle_struct *lstat;
385 struct vfs_handle_struct *unlink;
386 struct vfs_handle_struct *chmod;
387 struct vfs_handle_struct *fchmod;
388 struct vfs_handle_struct *chown;
389 struct vfs_handle_struct *fchown;
390 struct vfs_handle_struct *chdir;
391 struct vfs_handle_struct *getwd;
392 struct vfs_handle_struct *utime;
393 struct vfs_handle_struct *ftruncate;
394 struct vfs_handle_struct *lock;
395 struct vfs_handle_struct *kernel_flock;
396 struct vfs_handle_struct *getlock;
397 struct vfs_handle_struct *symlink;
398 struct vfs_handle_struct *readlink;
399 struct vfs_handle_struct *link;
400 struct vfs_handle_struct *mknod;
401 struct vfs_handle_struct *realpath;
402 struct vfs_handle_struct *notify_watch;
404 /* NT ACL operations. */
406 struct vfs_handle_struct *fget_nt_acl;
407 struct vfs_handle_struct *get_nt_acl;
408 struct vfs_handle_struct *fset_nt_acl;
409 struct vfs_handle_struct *set_nt_acl;
411 /* POSIX ACL operations. */
413 struct vfs_handle_struct *chmod_acl;
414 struct vfs_handle_struct *fchmod_acl;
416 struct vfs_handle_struct *sys_acl_get_entry;
417 struct vfs_handle_struct *sys_acl_get_tag_type;
418 struct vfs_handle_struct *sys_acl_get_permset;
419 struct vfs_handle_struct *sys_acl_get_qualifier;
420 struct vfs_handle_struct *sys_acl_get_file;
421 struct vfs_handle_struct *sys_acl_get_fd;
422 struct vfs_handle_struct *sys_acl_clear_perms;
423 struct vfs_handle_struct *sys_acl_add_perm;
424 struct vfs_handle_struct *sys_acl_to_text;
425 struct vfs_handle_struct *sys_acl_init;
426 struct vfs_handle_struct *sys_acl_create_entry;
427 struct vfs_handle_struct *sys_acl_set_tag_type;
428 struct vfs_handle_struct *sys_acl_set_qualifier;
429 struct vfs_handle_struct *sys_acl_set_permset;
430 struct vfs_handle_struct *sys_acl_valid;
431 struct vfs_handle_struct *sys_acl_set_file;
432 struct vfs_handle_struct *sys_acl_set_fd;
433 struct vfs_handle_struct *sys_acl_delete_def_file;
434 struct vfs_handle_struct *sys_acl_get_perm;
435 struct vfs_handle_struct *sys_acl_free_text;
436 struct vfs_handle_struct *sys_acl_free_acl;
437 struct vfs_handle_struct *sys_acl_free_qualifier;
440 struct vfs_handle_struct *getxattr;
441 struct vfs_handle_struct *lgetxattr;
442 struct vfs_handle_struct *fgetxattr;
443 struct vfs_handle_struct *listxattr;
444 struct vfs_handle_struct *llistxattr;
445 struct vfs_handle_struct *flistxattr;
446 struct vfs_handle_struct *removexattr;
447 struct vfs_handle_struct *lremovexattr;
448 struct vfs_handle_struct *fremovexattr;
449 struct vfs_handle_struct *setxattr;
450 struct vfs_handle_struct *lsetxattr;
451 struct vfs_handle_struct *fsetxattr;
454 struct vfs_handle_struct *aio_read;
455 struct vfs_handle_struct *aio_write;
456 struct vfs_handle_struct *aio_return;
457 struct vfs_handle_struct *aio_cancel;
458 struct vfs_handle_struct *aio_error;
459 struct vfs_handle_struct *aio_fsync;
460 struct vfs_handle_struct *aio_suspend;
465 Possible VFS operation layers (per-operation)
467 These values are used by VFS subsystem when building vfs_ops for connection
468 from multiple VFS modules. Internally, Samba differentiates only opaque and
469 transparent layers at this process. Other types are used for providing better
470 diagnosing facilities.
472 Most modules will provide transparent layers. Opaque layer is for modules
473 which implement actual file system calls (like DB-based VFS). For example,
474 default POSIX VFS which is built in into Samba is an opaque VFS module.
476 Other layer types (audit, splitter, scanner) were designed to provide different
477 degree of transparency and for diagnosing VFS module behaviour.
479 Each module can implement several layers at the same time provided that only
480 one layer is used per each operation.
484 typedef enum _vfs_op_layer {
485 SMB_VFS_LAYER_NOOP = -1, /* - For using in VFS module to indicate end of array */
486 /* of operations description */
487 SMB_VFS_LAYER_OPAQUE = 0, /* - Final level, does not call anything beyond itself */
488 SMB_VFS_LAYER_TRANSPARENT, /* - Normal operation, calls underlying layer after */
489 /* possibly changing passed data */
490 SMB_VFS_LAYER_LOGGER, /* - Logs data, calls underlying layer, logging may not */
492 SMB_VFS_LAYER_SPLITTER, /* - Splits operation, calls underlying layer _and_ own facility, */
493 /* then combines result */
494 SMB_VFS_LAYER_SCANNER /* - Checks data and possibly initiates additional */
495 /* file activity like logging to files _inside_ samba VFS */
499 VFS operation description. Each VFS module registers an array of vfs_op_tuple to VFS subsystem,
500 which describes all operations this module is willing to intercept.
501 VFS subsystem initializes then the conn->vfs_ops and conn->vfs_opaque_ops structs
502 using this information.
505 typedef struct vfs_op_tuple {
512 typedef struct vfs_handle_struct {
513 struct vfs_handle_struct *next, *prev;
515 struct vfs_ops vfs_next;
516 struct connection_struct *conn;
518 void (*free_data)(void **data);
522 typedef struct vfs_statvfs_struct {
523 /* For undefined recommended transfer size return -1 in that field */
524 uint32 OptimalTransferSize; /* bsize on some os, iosize on other os */
528 The next three fields are in terms of the block size.
529 (above). If block size is unknown, 4096 would be a
530 reasonable block size for a server to report.
531 Note that returning the blocks/blocksavail removes need
532 to make a second call (to QFSInfo level 0x103 to get this info.
533 UserBlockAvail is typically less than or equal to BlocksAvail,
534 if no distinction is made return the same value in each.
537 SMB_BIG_UINT TotalBlocks;
538 SMB_BIG_UINT BlocksAvail; /* bfree */
539 SMB_BIG_UINT UserBlocksAvail; /* bavail */
541 /* For undefined Node fields or FSID return -1 */
542 SMB_BIG_UINT TotalFileNodes;
543 SMB_BIG_UINT FreeFileNodes;
544 SMB_BIG_UINT FsIdentifier; /* fsid */
545 /* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
546 /* NB flags can come from FILE_SYSTEM_DEVICE_INFO call */
547 } vfs_statvfs_struct;
549 #define VFS_ADD_FSP_EXTENSION(handle, fsp, type) \
550 vfs_add_fsp_extension_notype(handle, (fsp), sizeof(type))
552 #define VFS_FETCH_FSP_EXTENSION(handle, fsp) \
553 vfs_fetch_fsp_extension(handle, (fsp))
555 #define VFS_REMOVE_FSP_EXTENSION(handle, fsp) \
556 vfs_remove_fsp_extension((handle), (fsp))
558 #define SMB_VFS_HANDLE_GET_DATA(handle, datap, type, ret) { \
559 if (!(handle)||((datap=(type *)(handle)->data)==NULL)) { \
560 DEBUG(0,("%s() failed to get vfs_handle->data!\n",FUNCTION_MACRO)); \
565 #define SMB_VFS_HANDLE_SET_DATA(handle, datap, free_fn, type, ret) { \
567 DEBUG(0,("%s() failed to set handle->data!\n",FUNCTION_MACRO)); \
570 if ((handle)->free_data) { \
571 (handle)->free_data(&(handle)->data); \
573 (handle)->data = (void *)datap; \
574 (handle)->free_data = free_fn; \
578 #define SMB_VFS_HANDLE_FREE_DATA(handle) { \
579 if ((handle) && (handle)->free_data) { \
580 (handle)->free_data(&(handle)->data); \
584 /* Check whether module-specific data handle was already allocated or not */
585 #define SMB_VFS_HANDLE_TEST_DATA(handle) ( !(handle) || !(handle)->data ? False : True )
587 #define SMB_VFS_OP(x) ((void *) x)
589 #define DEFAULT_VFS_MODULE_NAME "/[Default VFS]/"
591 #include "vfs_macros.h"