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 the we had to change DIR to SMB_STRUCT_DIR. JRA */
63 /* Changed to version 15 as the we added the statvfs call. JRA */
64 #define SMB_VFS_INTERFACE_VERSION 15
67 /* to bug old modules which are trying to compile with the old functions */
68 #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 };
69 #define lp_parm_string __ERROR_please_port_lp_parm_string_to_lp_parm_const_string_or_lp_parm_talloc_string { \
70 __ERROR_please_port_lp_parm_string_to_lp_parm_const_string_or_lp_parm_talloc_string };
71 #define lp_vfs_options __ERROR_please_donot_use_lp_vfs_options_anymore_use_lp_parm_xxxx_functions_instead { \
72 __ERROR_please_donot_use_lp_vfs_options_anymore_use_lp_parm_xxxx_functions_instead };
75 All intercepted VFS operations must be declared as static functions inside module source
76 in order to keep smbd namespace unpolluted. See source of audit, extd_audit, fake_perms and recycle
77 example VFS modules for more details.
80 /* VFS operations structure */
82 struct vfs_handle_struct;
83 struct connection_struct;
85 struct security_descriptor_info;
86 struct vfs_statvfs_struct;
89 Available VFS operations. These values must be in sync with vfs_ops struct
90 (struct vfs_fn_pointers and struct vfs_handle_pointers inside of struct vfs_ops).
91 In particular, if new operations are added to vfs_ops, appropriate constants
92 should be added to vfs_op_type so that order of them kept same as in vfs_ops.
95 typedef enum _vfs_op_type {
100 SMB_VFS_OP_CONNECT = 0,
101 SMB_VFS_OP_DISCONNECT,
102 SMB_VFS_OP_DISK_FREE,
103 SMB_VFS_OP_GET_QUOTA,
104 SMB_VFS_OP_SET_QUOTA,
105 SMB_VFS_OP_GET_SHADOW_COPY_DATA,
108 /* Directory operations */
114 SMB_VFS_OP_REWINDDIR,
119 /* File operations */
142 SMB_VFS_OP_FTRUNCATE,
150 /* NT ACL operations. */
152 SMB_VFS_OP_FGET_NT_ACL,
153 SMB_VFS_OP_GET_NT_ACL,
154 SMB_VFS_OP_FSET_NT_ACL,
155 SMB_VFS_OP_SET_NT_ACL,
157 /* POSIX ACL operations. */
159 SMB_VFS_OP_CHMOD_ACL,
160 SMB_VFS_OP_FCHMOD_ACL,
162 SMB_VFS_OP_SYS_ACL_GET_ENTRY,
163 SMB_VFS_OP_SYS_ACL_GET_TAG_TYPE,
164 SMB_VFS_OP_SYS_ACL_GET_PERMSET,
165 SMB_VFS_OP_SYS_ACL_GET_QUALIFIER,
166 SMB_VFS_OP_SYS_ACL_GET_FILE,
167 SMB_VFS_OP_SYS_ACL_GET_FD,
168 SMB_VFS_OP_SYS_ACL_CLEAR_PERMS,
169 SMB_VFS_OP_SYS_ACL_ADD_PERM,
170 SMB_VFS_OP_SYS_ACL_TO_TEXT,
171 SMB_VFS_OP_SYS_ACL_INIT,
172 SMB_VFS_OP_SYS_ACL_CREATE_ENTRY,
173 SMB_VFS_OP_SYS_ACL_SET_TAG_TYPE,
174 SMB_VFS_OP_SYS_ACL_SET_QUALIFIER,
175 SMB_VFS_OP_SYS_ACL_SET_PERMSET,
176 SMB_VFS_OP_SYS_ACL_VALID,
177 SMB_VFS_OP_SYS_ACL_SET_FILE,
178 SMB_VFS_OP_SYS_ACL_SET_FD,
179 SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
180 SMB_VFS_OP_SYS_ACL_GET_PERM,
181 SMB_VFS_OP_SYS_ACL_FREE_TEXT,
182 SMB_VFS_OP_SYS_ACL_FREE_ACL,
183 SMB_VFS_OP_SYS_ACL_FREE_QUALIFIER,
187 SMB_VFS_OP_LGETXATTR,
188 SMB_VFS_OP_FGETXATTR,
189 SMB_VFS_OP_LISTXATTR,
190 SMB_VFS_OP_LLISTXATTR,
191 SMB_VFS_OP_FLISTXATTR,
192 SMB_VFS_OP_REMOVEXATTR,
193 SMB_VFS_OP_LREMOVEXATTR,
194 SMB_VFS_OP_FREMOVEXATTR,
196 SMB_VFS_OP_LSETXATTR,
197 SMB_VFS_OP_FSETXATTR,
201 SMB_VFS_OP_AIO_WRITE,
202 SMB_VFS_OP_AIO_RETURN,
203 SMB_VFS_OP_AIO_CANCEL,
204 SMB_VFS_OP_AIO_ERROR,
205 SMB_VFS_OP_AIO_FSYNC,
206 SMB_VFS_OP_AIO_SUSPEND,
208 /* This should always be last enum value */
214 Please keep vfs_op_type, struct vfs_fn_pointers and struct vfs_handles_pointers in sync.
217 struct vfs_fn_pointers {
218 /* Disk operations */
220 int (*connect_fn)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *service, const char *user);
221 void (*disconnect)(struct vfs_handle_struct *handle, struct connection_struct *conn);
222 SMB_BIG_UINT (*disk_free)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path, BOOL small_query, SMB_BIG_UINT *bsize,
223 SMB_BIG_UINT *dfree, SMB_BIG_UINT *dsize);
224 int (*get_quota)(struct vfs_handle_struct *handle, struct connection_struct *conn, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
225 int (*set_quota)(struct vfs_handle_struct *handle, struct connection_struct *conn, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
226 int (*get_shadow_copy_data)(struct vfs_handle_struct *handle, struct files_struct *fsp, SHADOW_COPY_DATA *shadow_copy_data, BOOL labels);
227 int (*statvfs)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path, struct vfs_statvfs_struct *statbuf);
229 /* Directory operations */
231 SMB_STRUCT_DIR *(*opendir)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *fname, const char *mask, uint32 attributes);
232 SMB_STRUCT_DIRENT *(*readdir)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_STRUCT_DIR *dirp);
233 void (*seekdir)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_STRUCT_DIR *dirp, long offset);
234 long (*telldir)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_STRUCT_DIR *dirp);
235 void (*rewind_dir)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_STRUCT_DIR *dirp);
236 int (*mkdir)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path, mode_t mode);
237 int (*rmdir)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path);
238 int (*closedir)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_STRUCT_DIR *dir);
240 /* File operations */
242 int (*open)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *fname, int flags, mode_t mode);
243 int (*close_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd);
244 ssize_t (*read)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, void *data, size_t n);
245 ssize_t (*pread)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, void *data, size_t n, SMB_OFF_T offset);
246 ssize_t (*write)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, const void *data, size_t n);
247 ssize_t (*pwrite)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, const void *data, size_t n, SMB_OFF_T offset);
248 SMB_OFF_T (*lseek)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_OFF_T offset, int whence);
249 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);
250 int (*rename)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *oldname, const char *newname);
251 int (*fsync)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd);
252 int (*stat)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *fname, SMB_STRUCT_STAT *sbuf);
253 int (*fstat)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_STRUCT_STAT *sbuf);
254 int (*lstat)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path, SMB_STRUCT_STAT *sbuf);
255 int (*unlink)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path);
256 int (*chmod)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path, mode_t mode);
257 int (*fchmod)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, mode_t mode);
258 int (*chown)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path, uid_t uid, gid_t gid);
259 int (*fchown)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, uid_t uid, gid_t gid);
260 int (*chdir)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path);
261 char *(*getwd)(struct vfs_handle_struct *handle, struct connection_struct *conn, char *buf);
262 int (*utime)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path, struct utimbuf *times);
263 int (*ftruncate)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_OFF_T offset);
264 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);
265 int (*symlink)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *oldpath, const char *newpath);
266 int (*readlink)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path, char *buf, size_t bufsiz);
267 int (*link)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *oldpath, const char *newpath);
268 int (*mknod)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path, mode_t mode, SMB_DEV_T dev);
269 char *(*realpath)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path, char *resolved_path);
271 /* NT ACL operations. */
273 size_t (*fget_nt_acl)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, uint32 security_info, struct security_descriptor_info **ppdesc);
274 size_t (*get_nt_acl)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, uint32 security_info, struct security_descriptor_info **ppdesc);
275 BOOL (*fset_nt_acl)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, uint32 security_info_sent, struct security_descriptor_info *psd);
276 BOOL (*set_nt_acl)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, uint32 security_info_sent, struct security_descriptor_info *psd);
278 /* POSIX ACL operations. */
280 int (*chmod_acl)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *name, mode_t mode);
281 int (*fchmod_acl)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, mode_t mode);
283 int (*sys_acl_get_entry)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_T theacl, int entry_id, SMB_ACL_ENTRY_T *entry_p);
284 int (*sys_acl_get_tag_type)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_ENTRY_T entry_d, SMB_ACL_TAG_T *tag_type_p);
285 int (*sys_acl_get_permset)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_ENTRY_T entry_d, SMB_ACL_PERMSET_T *permset_p);
286 void * (*sys_acl_get_qualifier)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_ENTRY_T entry_d);
287 SMB_ACL_T (*sys_acl_get_file)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path_p, SMB_ACL_TYPE_T type);
288 SMB_ACL_T (*sys_acl_get_fd)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd);
289 int (*sys_acl_clear_perms)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_PERMSET_T permset);
290 int (*sys_acl_add_perm)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
291 char * (*sys_acl_to_text)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_T theacl, ssize_t *plen);
292 SMB_ACL_T (*sys_acl_init)(struct vfs_handle_struct *handle, struct connection_struct *conn, int count);
293 int (*sys_acl_create_entry)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry);
294 int (*sys_acl_set_tag_type)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_ENTRY_T entry, SMB_ACL_TAG_T tagtype);
295 int (*sys_acl_set_qualifier)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_ENTRY_T entry, void *qual);
296 int (*sys_acl_set_permset)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_ENTRY_T entry, SMB_ACL_PERMSET_T permset);
297 int (*sys_acl_valid)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_T theacl );
298 int (*sys_acl_set_file)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl);
299 int (*sys_acl_set_fd)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_ACL_T theacl);
300 int (*sys_acl_delete_def_file)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path);
301 int (*sys_acl_get_perm)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
302 int (*sys_acl_free_text)(struct vfs_handle_struct *handle, struct connection_struct *conn, char *text);
303 int (*sys_acl_free_acl)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_T posix_acl);
304 int (*sys_acl_free_qualifier)(struct vfs_handle_struct *handle, struct connection_struct *conn, void *qualifier, SMB_ACL_TAG_T tagtype);
307 ssize_t (*getxattr)(struct vfs_handle_struct *handle,struct connection_struct *conn,const char *path, const char *name, void *value, size_t size);
308 ssize_t (*lgetxattr)(struct vfs_handle_struct *handle,struct connection_struct *conn,const char *path, const char *name, void *value, size_t size);
309 ssize_t (*fgetxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp,int fd, const char *name, void *value, size_t size);
310 ssize_t (*listxattr)(struct vfs_handle_struct *handle, struct connection_struct *conn,const char *path, char *list, size_t size);
311 ssize_t (*llistxattr)(struct vfs_handle_struct *handle, struct connection_struct *conn,const char *path, char *list, size_t size);
312 ssize_t (*flistxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp,int fd, char *list, size_t size);
313 int (*removexattr)(struct vfs_handle_struct *handle, struct connection_struct *conn,const char *path, const char *name);
314 int (*lremovexattr)(struct vfs_handle_struct *handle, struct connection_struct *conn,const char *path, const char *name);
315 int (*fremovexattr)(struct vfs_handle_struct *handle, struct files_struct *fsp,int filedes, const char *name);
316 int (*setxattr)(struct vfs_handle_struct *handle, struct connection_struct *conn,const char *path, const char *name, const void *value, size_t size, int flags);
317 int (*lsetxattr)(struct vfs_handle_struct *handle, struct connection_struct *conn,const char *path, const char *name, const void *value, size_t size, int flags);
318 int (*fsetxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp,int filedes, const char *name, const void *value, size_t size, int flags);
321 int (*aio_read)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
322 int (*aio_write)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
323 ssize_t (*aio_return_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
324 int (*aio_cancel)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_STRUCT_AIOCB *aiocb);
325 int (*aio_error_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
326 int (*aio_fsync)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_STRUCT_AIOCB *aiocb);
327 int (*aio_suspend)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_AIOCB * const aiocb[], int n, const struct timespec *timeout);
331 struct vfs_handles_pointers {
332 /* Disk operations */
334 struct vfs_handle_struct *connect_hnd;
335 struct vfs_handle_struct *disconnect;
336 struct vfs_handle_struct *disk_free;
337 struct vfs_handle_struct *get_quota;
338 struct vfs_handle_struct *set_quota;
339 struct vfs_handle_struct *get_shadow_copy_data;
340 struct vfs_handle_struct *statvfs;
342 /* Directory operations */
344 struct vfs_handle_struct *opendir;
345 struct vfs_handle_struct *readdir;
346 struct vfs_handle_struct *seekdir;
347 struct vfs_handle_struct *telldir;
348 struct vfs_handle_struct *rewind_dir;
349 struct vfs_handle_struct *mkdir;
350 struct vfs_handle_struct *rmdir;
351 struct vfs_handle_struct *closedir;
353 /* File operations */
355 struct vfs_handle_struct *open;
356 struct vfs_handle_struct *close_hnd;
357 struct vfs_handle_struct *read;
358 struct vfs_handle_struct *pread;
359 struct vfs_handle_struct *write;
360 struct vfs_handle_struct *pwrite;
361 struct vfs_handle_struct *lseek;
362 struct vfs_handle_struct *sendfile;
363 struct vfs_handle_struct *rename;
364 struct vfs_handle_struct *fsync;
365 struct vfs_handle_struct *stat;
366 struct vfs_handle_struct *fstat;
367 struct vfs_handle_struct *lstat;
368 struct vfs_handle_struct *unlink;
369 struct vfs_handle_struct *chmod;
370 struct vfs_handle_struct *fchmod;
371 struct vfs_handle_struct *chown;
372 struct vfs_handle_struct *fchown;
373 struct vfs_handle_struct *chdir;
374 struct vfs_handle_struct *getwd;
375 struct vfs_handle_struct *utime;
376 struct vfs_handle_struct *ftruncate;
377 struct vfs_handle_struct *lock;
378 struct vfs_handle_struct *symlink;
379 struct vfs_handle_struct *readlink;
380 struct vfs_handle_struct *link;
381 struct vfs_handle_struct *mknod;
382 struct vfs_handle_struct *realpath;
384 /* NT ACL operations. */
386 struct vfs_handle_struct *fget_nt_acl;
387 struct vfs_handle_struct *get_nt_acl;
388 struct vfs_handle_struct *fset_nt_acl;
389 struct vfs_handle_struct *set_nt_acl;
391 /* POSIX ACL operations. */
393 struct vfs_handle_struct *chmod_acl;
394 struct vfs_handle_struct *fchmod_acl;
396 struct vfs_handle_struct *sys_acl_get_entry;
397 struct vfs_handle_struct *sys_acl_get_tag_type;
398 struct vfs_handle_struct *sys_acl_get_permset;
399 struct vfs_handle_struct *sys_acl_get_qualifier;
400 struct vfs_handle_struct *sys_acl_get_file;
401 struct vfs_handle_struct *sys_acl_get_fd;
402 struct vfs_handle_struct *sys_acl_clear_perms;
403 struct vfs_handle_struct *sys_acl_add_perm;
404 struct vfs_handle_struct *sys_acl_to_text;
405 struct vfs_handle_struct *sys_acl_init;
406 struct vfs_handle_struct *sys_acl_create_entry;
407 struct vfs_handle_struct *sys_acl_set_tag_type;
408 struct vfs_handle_struct *sys_acl_set_qualifier;
409 struct vfs_handle_struct *sys_acl_set_permset;
410 struct vfs_handle_struct *sys_acl_valid;
411 struct vfs_handle_struct *sys_acl_set_file;
412 struct vfs_handle_struct *sys_acl_set_fd;
413 struct vfs_handle_struct *sys_acl_delete_def_file;
414 struct vfs_handle_struct *sys_acl_get_perm;
415 struct vfs_handle_struct *sys_acl_free_text;
416 struct vfs_handle_struct *sys_acl_free_acl;
417 struct vfs_handle_struct *sys_acl_free_qualifier;
420 struct vfs_handle_struct *getxattr;
421 struct vfs_handle_struct *lgetxattr;
422 struct vfs_handle_struct *fgetxattr;
423 struct vfs_handle_struct *listxattr;
424 struct vfs_handle_struct *llistxattr;
425 struct vfs_handle_struct *flistxattr;
426 struct vfs_handle_struct *removexattr;
427 struct vfs_handle_struct *lremovexattr;
428 struct vfs_handle_struct *fremovexattr;
429 struct vfs_handle_struct *setxattr;
430 struct vfs_handle_struct *lsetxattr;
431 struct vfs_handle_struct *fsetxattr;
434 struct vfs_handle_struct *aio_read;
435 struct vfs_handle_struct *aio_write;
436 struct vfs_handle_struct *aio_return;
437 struct vfs_handle_struct *aio_cancel;
438 struct vfs_handle_struct *aio_error;
439 struct vfs_handle_struct *aio_fsync;
440 struct vfs_handle_struct *aio_suspend;
445 Possible VFS operation layers (per-operation)
447 These values are used by VFS subsystem when building vfs_ops for connection
448 from multiple VFS modules. Internally, Samba differentiates only opaque and
449 transparent layers at this process. Other types are used for providing better
450 diagnosing facilities.
452 Most modules will provide transparent layers. Opaque layer is for modules
453 which implement actual file system calls (like DB-based VFS). For example,
454 default POSIX VFS which is built in into Samba is an opaque VFS module.
456 Other layer types (audit, splitter, scanner) were designed to provide different
457 degree of transparency and for diagnosing VFS module behaviour.
459 Each module can implement several layers at the same time provided that only
460 one layer is used per each operation.
464 typedef enum _vfs_op_layer {
465 SMB_VFS_LAYER_NOOP = -1, /* - For using in VFS module to indicate end of array */
466 /* of operations description */
467 SMB_VFS_LAYER_OPAQUE = 0, /* - Final level, does not call anything beyond itself */
468 SMB_VFS_LAYER_TRANSPARENT, /* - Normal operation, calls underlying layer after */
469 /* possibly changing passed data */
470 SMB_VFS_LAYER_LOGGER, /* - Logs data, calls underlying layer, logging may not */
472 SMB_VFS_LAYER_SPLITTER, /* - Splits operation, calls underlying layer _and_ own facility, */
473 /* then combines result */
474 SMB_VFS_LAYER_SCANNER /* - Checks data and possibly initiates additional */
475 /* file activity like logging to files _inside_ samba VFS */
479 VFS operation description. Each VFS module registers an array of vfs_op_tuple to VFS subsystem,
480 which describes all operations this module is willing to intercept.
481 VFS subsystem initializes then the conn->vfs_ops and conn->vfs_opaque_ops structs
482 using this information.
485 typedef struct vfs_op_tuple {
492 typedef struct vfs_handle_struct {
493 struct vfs_handle_struct *next, *prev;
495 struct vfs_ops vfs_next;
496 struct connection_struct *conn;
498 void (*free_data)(void **data);
502 typedef struct vfs_statvfs_struct {
503 /* For undefined recommended transfer size return -1 in that field */
504 uint32 OptimalTransferSize; /* bsize on some os, iosize on other os */
508 The next three fields are in terms of the block size.
509 (above). If block size is unknown, 4096 would be a
510 reasonable block size for a server to report.
511 Note that returning the blocks/blocksavail removes need
512 to make a second call (to QFSInfo level 0x103 to get this info.
513 UserBlockAvail is typically less than or equal to BlocksAvail,
514 if no distinction is made return the same value in each.
517 SMB_BIG_UINT TotalBlocks;
518 SMB_BIG_UINT BlocksAvail; /* bfree */
519 SMB_BIG_UINT UserBlocksAvail; /* bavail */
521 /* For undefined Node fields or FSID return -1 */
522 SMB_BIG_UINT TotalFileNodes;
523 SMB_BIG_UINT FreeFileNodes;
524 SMB_BIG_UINT FsIdentifier; /* fsid */
525 /* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
526 /* NB flags can come from FILE_SYSTEM_DEVICE_INFO call */
527 } vfs_statvfs_struct;
530 #define SMB_VFS_HANDLE_GET_DATA(handle, datap, type, ret) { \
531 if (!(handle)||((datap=(type *)(handle)->data)==NULL)) { \
532 DEBUG(0,("%s() failed to get vfs_handle->data!\n",FUNCTION_MACRO)); \
537 #define SMB_VFS_HANDLE_SET_DATA(handle, datap, free_fn, type, ret) { \
539 DEBUG(0,("%s() failed to set handle->data!\n",FUNCTION_MACRO)); \
542 if ((handle)->free_data) { \
543 (handle)->free_data(&(handle)->data); \
545 (handle)->data = (void *)datap; \
546 (handle)->free_data = free_fn; \
550 #define SMB_VFS_HANDLE_FREE_DATA(handle) { \
551 if ((handle) && (handle)->free_data) { \
552 (handle)->free_data(&(handle)->data); \
556 /* Check whether module-specific data handle was already allocated or not */
557 #define SMB_VFS_HANDLE_TEST_DATA(handle) ( !(handle) || !(handle)->data ? False : True )
559 #define SMB_VFS_OP(x) ((void *) x)
562 #include "vfs_macros.h"