2 Unix SMB/CIFS implementation.
3 VFS structures and parameters
4 Copyright (C) Jeremy Allison 1999-2005
5 Copyright (C) Tim Potter 1999
6 Copyright (C) Alexander Bokovoy 2002-2005
7 Copyright (C) Stefan (metze) Metzmacher 2003
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 This work was sponsored by Optifacio Software Services, Inc.
28 /* Avoid conflict with an AIX include file */
35 * As we're now (thanks Andrew ! :-) using file_structs and connection
36 * structs in the vfs - then anyone writing a vfs must include includes.h...
40 * This next constant specifies the version number of the VFS interface
41 * this smbd will load. Increment this if *ANY* changes are made to the
44 * If you change anything here, please also update modules/vfs_full_audit.c.
48 /* Changed to version 2 for CIFS UNIX extensions (mknod and link added). JRA. */
49 /* Changed to version 3 for POSIX acl extensions. JRA. */
50 /* Changed to version 4 for cascaded VFS interface. Alexander Bokovoy. */
51 /* Changed to version 5 for sendfile addition. JRA. */
52 /* Changed to version 6 for the new module system, fixed cascading and quota functions. --metze */
53 /* Changed to version 7 to include the get_nt_acl info parameter. JRA. */
54 /* Changed to version 8 includes EA calls. JRA. */
55 /* Changed to version 9 to include the get_shadow_data call. --metze */
56 /* Changed to version 10 to include pread/pwrite calls. */
57 /* Changed to version 11 to include seekdir/telldir/rewinddir calls. JRA */
58 /* Changed to version 12 to add mask and attributes to opendir(). JRA
59 Also include aio calls. JRA. */
60 /* Changed to version 13 as the internal structure of files_struct has changed. JRA */
61 /* Changed to version 14 as we had to change DIR to SMB_STRUCT_DIR. JRA */
62 /* Changed to version 15 as we added the statvfs call. JRA */
63 /* Changed to version 16 as we added the getlock call. JRA */
64 /* Changed to version 17 as we removed redundant connection_struct parameters. --jpeach */
65 /* Changed to version 18 to add fsp parameter to the open call -- jpeach
66 Also include kernel_flock call - jmcd */
67 /* Changed to version 19, kernel change notify has been merged
68 Also included linux setlease call - jmcd */
69 /* Changed to version 20, use ntimes call instead of utime (greater
70 * timestamp resolition. JRA. */
71 /* Changed to version21 to add chflags operation -- jpeach */
72 /* Changed to version22 to add lchown operation -- jra */
73 /* Leave at 22 - not yet released. But change set_nt_acl to return an NTSTATUS. jra. */
74 /* Leave at 22 - not yet released. Add file_id_create operation. --metze */
75 /* Leave at 22 - not yet released. Change all BOOL parameters (int) to bool. jra. */
76 /* Leave at 22 - not yet released. Added recvfile. */
77 /* Leave at 22 - not yet released. Change get_nt_acl to return NTSTATUS - vl */
78 /* Leave at 22 - not yet released. Change get_nt_acl to *not* take a
79 * files_struct. - obnox.*/
80 /* Leave at 22 - not yet released. Remove parameter fd from fget_nt_acl. - obnox */
81 /* Leave at 22 - not yet released. Remove parameter fd from gset_nt_acl. - obnox */
82 /* Leave at 22 - not yet released. Remove parameter fd from pread. - obnox */
83 /* Leave at 22 - not yet released. Remove parameter fd from pwrite. - obnox */
84 /* Leave at 22 - not yet released. Remove parameter fd from lseek. - obnox */
85 /* Leave at 22 - not yet released. Remove parameter fd from fsync. - obnox */
86 /* Leave at 22 - not yet released. Remove parameter fd from fstat. - obnox */
87 /* Leave at 22 - not yet released. Remove parameter fd from fchmod. - obnox */
88 /* Leave at 22 - not yet released. Remove parameter fd from fchown. - obnox */
89 /* Leave at 22 - not yet released. Remove parameter fd from ftruncate. - obnox */
90 /* Leave at 22 - not yet released. Remove parameter fd from lock. - obnox */
91 /* Leave at 22 - not yet released. Remove parameter fd from kernel_flock. - obnox */
92 /* Leave at 22 - not yet released. Remove parameter fd from linux_setlease. - obnox */
93 /* Leave at 22 - not yet released. Remove parameter fd from getlock. - obnox */
94 /* Leave at 22 - not yet released. Remove parameter fd from sys_acl_get_fd. - obnox */
95 /* Leave at 22 - not yet released. Remove parameter fd from fchmod_acl. - obnox */
96 /* Leave at 22 - not yet released. Remove parameter fd from sys_acl_set_fd. - obnox */
97 /* Leave at 22 - not yet released. Remove parameter fd from fgetxattr. - obnox */
98 /* Leave at 22 - not yet released. Remove parameter fd from flistxattr. - obnox */
99 /* Leave at 22 - not yet released. Remove parameter fd from fremovexattr. - obnox */
100 /* Leave at 22 - not yet released. Remove parameter fd from fsetxattr. - obnox */
101 /* Leave at 22 - not yet released. Remove parameter fd from aio_cancel. - obnox */
102 /* Leave at 22 - not yet released. Remove parameter fd from read. - obnox */
103 /* Leave at 22 - not yet released. Remove parameter fd from write. - obnox */
104 /* Leave at 22 - not yet released. Remove parameter fromfd from sendfile. - obnox */
105 /* Leave at 22 - not yet released. Remove parameter fromfd from recvfile. - obnox */
106 /* Leave at 22 - not yet released. Additional change: add operations for offline files -- ab */
107 /* Leave at 22 - not yet released. Add the streaminfo call. -- jpeach, vl */
108 /* Leave at 22 - not yet released. Remove parameter fd from close_fn. - obnox */
109 /* Changed to version 23 - remove set_nt_acl call. This can only be done via an
111 /* Changed to version 24 - make security descriptor const in fset_nt_acl. JRA. */
112 /* Changed to version 25 - Jelmer's change from SMB_BIG_UINT to uint64_t. */
113 /* Leave at 25 - not yet released. Add create_file call. -- tprouty. */
114 /* Leave at 25 - not yet released. Add create time to ntimes. -- tstecher. */
115 /* Leave at 25 - not yet released. Add get_alloc_size call. -- tprouty. */
116 /* Leave at 25 - not yet released. Add SMB_STRUCT_STAT to readdir. - sdann */
118 #define SMB_VFS_INTERFACE_VERSION 25
121 /* to bug old modules which are trying to compile with the old functions */
122 #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 };
123 #define lp_parm_string __ERROR_please_port_lp_parm_string_to_lp_parm_const_string_or_lp_parm_talloc_string { \
124 __ERROR_please_port_lp_parm_string_to_lp_parm_const_string_or_lp_parm_talloc_string };
125 #define lp_vfs_options __ERROR_please_donot_use_lp_vfs_options_anymore_use_lp_parm_xxxx_functions_instead { \
126 __ERROR_please_donot_use_lp_vfs_options_anymore_use_lp_parm_xxxx_functions_instead };
129 All intercepted VFS operations must be declared as static functions inside module source
130 in order to keep smbd namespace unpolluted. See source of audit, extd_audit, fake_perms and recycle
131 example VFS modules for more details.
134 /* VFS operations structure */
136 struct vfs_handle_struct;
137 struct connection_struct;
139 struct security_descriptor;
140 struct vfs_statvfs_struct;
143 struct smb_file_time;
146 Available VFS operations. These values must be in sync with vfs_ops struct
147 (struct vfs_fn_pointers and struct vfs_handle_pointers inside of struct vfs_ops).
148 In particular, if new operations are added to vfs_ops, appropriate constants
149 should be added to vfs_op_type so that order of them kept same as in vfs_ops.
152 typedef enum _vfs_op_type {
153 SMB_VFS_OP_NOOP = -1,
155 /* Disk operations */
157 SMB_VFS_OP_CONNECT = 0,
158 SMB_VFS_OP_DISCONNECT,
159 SMB_VFS_OP_DISK_FREE,
160 SMB_VFS_OP_GET_QUOTA,
161 SMB_VFS_OP_SET_QUOTA,
162 SMB_VFS_OP_GET_SHADOW_COPY_DATA,
164 SMB_VFS_OP_FS_CAPABILITIES,
166 /* Directory operations */
172 SMB_VFS_OP_REWINDDIR,
177 /* File operations */
180 SMB_VFS_OP_CREATE_FILE,
194 SMB_VFS_OP_GET_ALLOC_SIZE,
204 SMB_VFS_OP_FTRUNCATE,
206 SMB_VFS_OP_KERNEL_FLOCK,
207 SMB_VFS_OP_LINUX_SETLEASE,
214 SMB_VFS_OP_NOTIFY_WATCH,
216 SMB_VFS_OP_FILE_ID_CREATE,
217 SMB_VFS_OP_STREAMINFO,
218 SMB_VFS_OP_GET_REAL_FILENAME,
220 /* NT ACL operations. */
222 SMB_VFS_OP_FGET_NT_ACL,
223 SMB_VFS_OP_GET_NT_ACL,
224 SMB_VFS_OP_FSET_NT_ACL,
226 /* POSIX ACL operations. */
228 SMB_VFS_OP_CHMOD_ACL,
229 SMB_VFS_OP_FCHMOD_ACL,
231 SMB_VFS_OP_SYS_ACL_GET_ENTRY,
232 SMB_VFS_OP_SYS_ACL_GET_TAG_TYPE,
233 SMB_VFS_OP_SYS_ACL_GET_PERMSET,
234 SMB_VFS_OP_SYS_ACL_GET_QUALIFIER,
235 SMB_VFS_OP_SYS_ACL_GET_FILE,
236 SMB_VFS_OP_SYS_ACL_GET_FD,
237 SMB_VFS_OP_SYS_ACL_CLEAR_PERMS,
238 SMB_VFS_OP_SYS_ACL_ADD_PERM,
239 SMB_VFS_OP_SYS_ACL_TO_TEXT,
240 SMB_VFS_OP_SYS_ACL_INIT,
241 SMB_VFS_OP_SYS_ACL_CREATE_ENTRY,
242 SMB_VFS_OP_SYS_ACL_SET_TAG_TYPE,
243 SMB_VFS_OP_SYS_ACL_SET_QUALIFIER,
244 SMB_VFS_OP_SYS_ACL_SET_PERMSET,
245 SMB_VFS_OP_SYS_ACL_VALID,
246 SMB_VFS_OP_SYS_ACL_SET_FILE,
247 SMB_VFS_OP_SYS_ACL_SET_FD,
248 SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
249 SMB_VFS_OP_SYS_ACL_GET_PERM,
250 SMB_VFS_OP_SYS_ACL_FREE_TEXT,
251 SMB_VFS_OP_SYS_ACL_FREE_ACL,
252 SMB_VFS_OP_SYS_ACL_FREE_QUALIFIER,
256 SMB_VFS_OP_LGETXATTR,
257 SMB_VFS_OP_FGETXATTR,
258 SMB_VFS_OP_LISTXATTR,
259 SMB_VFS_OP_LLISTXATTR,
260 SMB_VFS_OP_FLISTXATTR,
261 SMB_VFS_OP_REMOVEXATTR,
262 SMB_VFS_OP_LREMOVEXATTR,
263 SMB_VFS_OP_FREMOVEXATTR,
265 SMB_VFS_OP_LSETXATTR,
266 SMB_VFS_OP_FSETXATTR,
270 SMB_VFS_OP_AIO_WRITE,
271 SMB_VFS_OP_AIO_RETURN,
272 SMB_VFS_OP_AIO_CANCEL,
273 SMB_VFS_OP_AIO_ERROR,
274 SMB_VFS_OP_AIO_FSYNC,
275 SMB_VFS_OP_AIO_SUSPEND,
276 SMB_VFS_OP_AIO_FORCE,
278 /* offline operations */
279 SMB_VFS_OP_IS_OFFLINE,
280 SMB_VFS_OP_SET_OFFLINE,
282 /* This should always be last enum value */
288 Please keep vfs_op_type, struct vfs_fn_pointers and struct vfs_handles_pointers in sync.
291 struct vfs_fn_pointers {
292 /* Disk operations */
294 int (*connect_fn)(struct vfs_handle_struct *handle, const char *service, const char *user);
295 void (*disconnect)(struct vfs_handle_struct *handle);
296 uint64_t (*disk_free)(struct vfs_handle_struct *handle, const char *path, bool small_query, uint64_t *bsize,
297 uint64_t *dfree, uint64_t *dsize);
298 int (*get_quota)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
299 int (*set_quota)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
300 int (*get_shadow_copy_data)(struct vfs_handle_struct *handle, struct files_struct *fsp, SHADOW_COPY_DATA *shadow_copy_data, bool labels);
301 int (*statvfs)(struct vfs_handle_struct *handle, const char *path, struct vfs_statvfs_struct *statbuf);
302 uint32_t (*fs_capabilities)(struct vfs_handle_struct *handle);
304 /* Directory operations */
306 SMB_STRUCT_DIR *(*opendir)(struct vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attributes);
307 SMB_STRUCT_DIRENT *(*readdir)(struct vfs_handle_struct *handle,
308 SMB_STRUCT_DIR *dirp,
309 SMB_STRUCT_STAT *sbuf);
310 void (*seekdir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp, long offset);
311 long (*telldir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
312 void (*rewind_dir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp);
313 int (*mkdir)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
314 int (*rmdir)(struct vfs_handle_struct *handle, const char *path);
315 int (*closedir)(struct vfs_handle_struct *handle, SMB_STRUCT_DIR *dir);
317 /* File operations */
319 int (*open)(struct vfs_handle_struct *handle, const char *fname, files_struct *fsp, int flags, mode_t mode);
320 NTSTATUS (*create_file)(struct vfs_handle_struct *handle,
321 struct smb_request *req,
322 uint16_t root_dir_fid,
324 uint32_t create_file_flags,
325 uint32_t access_mask,
326 uint32_t share_access,
327 uint32_t create_disposition,
328 uint32_t create_options,
329 uint32_t file_attributes,
330 uint32_t oplock_request,
331 uint64_t allocation_size,
332 struct security_descriptor *sd,
333 struct ea_list *ea_list,
334 files_struct **result,
336 SMB_STRUCT_STAT *psbuf);
337 int (*close_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
338 ssize_t (*vfs_read)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n);
339 ssize_t (*pread)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n, SMB_OFF_T offset);
340 ssize_t (*write)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n);
341 ssize_t (*pwrite)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n, SMB_OFF_T offset);
342 SMB_OFF_T (*lseek)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_OFF_T offset, int whence);
343 ssize_t (*sendfile)(struct vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *header, SMB_OFF_T offset, size_t count);
344 ssize_t (*recvfile)(struct vfs_handle_struct *handle, int fromfd, files_struct *tofsp, SMB_OFF_T offset, size_t count);
345 int (*rename)(struct vfs_handle_struct *handle, const char *oldname, const char *newname);
346 int (*fsync)(struct vfs_handle_struct *handle, struct files_struct *fsp);
347 int (*stat)(struct vfs_handle_struct *handle, const char *fname, SMB_STRUCT_STAT *sbuf);
348 int (*fstat)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
349 int (*lstat)(struct vfs_handle_struct *handle, const char *path, SMB_STRUCT_STAT *sbuf);
350 uint64_t (*get_alloc_size)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_STAT *sbuf);
351 int (*unlink)(struct vfs_handle_struct *handle, const char *path);
352 int (*chmod)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
353 int (*fchmod)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
354 int (*chown)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
355 int (*fchown)(struct vfs_handle_struct *handle, struct files_struct *fsp, uid_t uid, gid_t gid);
356 int (*lchown)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
357 int (*chdir)(struct vfs_handle_struct *handle, const char *path);
358 char *(*getwd)(struct vfs_handle_struct *handle, char *buf);
359 int (*ntimes)(struct vfs_handle_struct *handle, const char *path, struct smb_file_time *ft);
360 int (*ftruncate)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_OFF_T offset);
361 bool (*lock)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_OFF_T offset, SMB_OFF_T count, int type);
362 int (*kernel_flock)(struct vfs_handle_struct *handle, struct files_struct *fsp, uint32 share_mode);
363 int (*linux_setlease)(struct vfs_handle_struct *handle, struct files_struct *fsp, int leasetype);
364 bool (*getlock)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid);
365 int (*symlink)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
366 int (*vfs_readlink)(struct vfs_handle_struct *handle, const char *path, char *buf, size_t bufsiz);
367 int (*link)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
368 int (*mknod)(struct vfs_handle_struct *handle, const char *path, mode_t mode, SMB_DEV_T dev);
369 char *(*realpath)(struct vfs_handle_struct *handle, const char *path, char *resolved_path);
370 NTSTATUS (*notify_watch)(struct vfs_handle_struct *handle,
371 struct sys_notify_context *ctx,
372 struct notify_entry *e,
373 void (*callback)(struct sys_notify_context *ctx,
375 struct notify_event *ev),
376 void *private_data, void *handle_p);
377 int (*chflags)(struct vfs_handle_struct *handle, const char *path, unsigned int flags);
378 struct file_id (*file_id_create)(struct vfs_handle_struct *handle, SMB_DEV_T dev, SMB_INO_T inode);
380 NTSTATUS (*streaminfo)(struct vfs_handle_struct *handle,
381 struct files_struct *fsp,
384 unsigned int *num_streams,
385 struct stream_struct **streams);
387 int (*get_real_filename)(struct vfs_handle_struct *handle,
393 /* NT ACL operations. */
395 NTSTATUS (*fget_nt_acl)(struct vfs_handle_struct *handle,
396 struct files_struct *fsp,
397 uint32 security_info,
398 struct security_descriptor **ppdesc);
399 NTSTATUS (*get_nt_acl)(struct vfs_handle_struct *handle,
401 uint32 security_info,
402 struct security_descriptor **ppdesc);
403 NTSTATUS (*fset_nt_acl)(struct vfs_handle_struct *handle,
404 struct files_struct *fsp,
405 uint32 security_info_sent,
406 const struct security_descriptor *psd);
408 /* POSIX ACL operations. */
410 int (*chmod_acl)(struct vfs_handle_struct *handle, const char *name, mode_t mode);
411 int (*fchmod_acl)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
413 int (*sys_acl_get_entry)(struct vfs_handle_struct *handle, SMB_ACL_T theacl, int entry_id, SMB_ACL_ENTRY_T *entry_p);
414 int (*sys_acl_get_tag_type)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_TAG_T *tag_type_p);
415 int (*sys_acl_get_permset)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_PERMSET_T *permset_p);
416 void * (*sys_acl_get_qualifier)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d);
417 SMB_ACL_T (*sys_acl_get_file)(struct vfs_handle_struct *handle, const char *path_p, SMB_ACL_TYPE_T type);
418 SMB_ACL_T (*sys_acl_get_fd)(struct vfs_handle_struct *handle, struct files_struct *fsp);
419 int (*sys_acl_clear_perms)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset);
420 int (*sys_acl_add_perm)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
421 char * (*sys_acl_to_text)(struct vfs_handle_struct *handle, SMB_ACL_T theacl, ssize_t *plen);
422 SMB_ACL_T (*sys_acl_init)(struct vfs_handle_struct *handle, int count);
423 int (*sys_acl_create_entry)(struct vfs_handle_struct *handle, SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry);
424 int (*sys_acl_set_tag_type)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_TAG_T tagtype);
425 int (*sys_acl_set_qualifier)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, void *qual);
426 int (*sys_acl_set_permset)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_PERMSET_T permset);
427 int (*sys_acl_valid)(struct vfs_handle_struct *handle, SMB_ACL_T theacl );
428 int (*sys_acl_set_file)(struct vfs_handle_struct *handle, const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl);
429 int (*sys_acl_set_fd)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_ACL_T theacl);
430 int (*sys_acl_delete_def_file)(struct vfs_handle_struct *handle, const char *path);
431 int (*sys_acl_get_perm)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
432 int (*sys_acl_free_text)(struct vfs_handle_struct *handle, char *text);
433 int (*sys_acl_free_acl)(struct vfs_handle_struct *handle, SMB_ACL_T posix_acl);
434 int (*sys_acl_free_qualifier)(struct vfs_handle_struct *handle, void *qualifier, SMB_ACL_TAG_T tagtype);
437 ssize_t (*getxattr)(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size);
438 ssize_t (*lgetxattr)(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size);
439 ssize_t (*fgetxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size);
440 ssize_t (*listxattr)(struct vfs_handle_struct *handle, const char *path, char *list, size_t size);
441 ssize_t (*llistxattr)(struct vfs_handle_struct *handle, const char *path, char *list, size_t size);
442 ssize_t (*flistxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size);
443 int (*removexattr)(struct vfs_handle_struct *handle, const char *path, const char *name);
444 int (*lremovexattr)(struct vfs_handle_struct *handle, const char *path, const char *name);
445 int (*fremovexattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name);
446 int (*setxattr)(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags);
447 int (*lsetxattr)(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags);
448 int (*fsetxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags);
451 int (*aio_read)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
452 int (*aio_write)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
453 ssize_t (*aio_return_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
454 int (*aio_cancel)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
455 int (*aio_error_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
456 int (*aio_fsync)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_STRUCT_AIOCB *aiocb);
457 int (*aio_suspend)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_AIOCB * const aiocb[], int n, const struct timespec *timeout);
458 bool (*aio_force)(struct vfs_handle_struct *handle, struct files_struct *fsp);
460 /* offline operations */
461 bool (*is_offline)(struct vfs_handle_struct *handle, const char *path, SMB_STRUCT_STAT *sbuf);
462 int (*set_offline)(struct vfs_handle_struct *handle, const char *path);
465 struct vfs_handles_pointers {
466 /* Disk operations */
468 struct vfs_handle_struct *connect_hnd;
469 struct vfs_handle_struct *disconnect;
470 struct vfs_handle_struct *disk_free;
471 struct vfs_handle_struct *get_quota;
472 struct vfs_handle_struct *set_quota;
473 struct vfs_handle_struct *get_shadow_copy_data;
474 struct vfs_handle_struct *statvfs;
475 struct vfs_handle_struct *fs_capabilities;
477 /* Directory operations */
479 struct vfs_handle_struct *opendir;
480 struct vfs_handle_struct *readdir;
481 struct vfs_handle_struct *seekdir;
482 struct vfs_handle_struct *telldir;
483 struct vfs_handle_struct *rewind_dir;
484 struct vfs_handle_struct *mkdir;
485 struct vfs_handle_struct *rmdir;
486 struct vfs_handle_struct *closedir;
488 /* File operations */
490 struct vfs_handle_struct *open;
491 struct vfs_handle_struct *create_file;
492 struct vfs_handle_struct *close_hnd;
493 struct vfs_handle_struct *vfs_read;
494 struct vfs_handle_struct *pread;
495 struct vfs_handle_struct *write;
496 struct vfs_handle_struct *pwrite;
497 struct vfs_handle_struct *lseek;
498 struct vfs_handle_struct *sendfile;
499 struct vfs_handle_struct *recvfile;
500 struct vfs_handle_struct *rename;
501 struct vfs_handle_struct *fsync;
502 struct vfs_handle_struct *stat;
503 struct vfs_handle_struct *fstat;
504 struct vfs_handle_struct *lstat;
505 struct vfs_handle_struct *get_alloc_size;
506 struct vfs_handle_struct *unlink;
507 struct vfs_handle_struct *chmod;
508 struct vfs_handle_struct *fchmod;
509 struct vfs_handle_struct *chown;
510 struct vfs_handle_struct *fchown;
511 struct vfs_handle_struct *lchown;
512 struct vfs_handle_struct *chdir;
513 struct vfs_handle_struct *getwd;
514 struct vfs_handle_struct *ntimes;
515 struct vfs_handle_struct *ftruncate;
516 struct vfs_handle_struct *lock;
517 struct vfs_handle_struct *kernel_flock;
518 struct vfs_handle_struct *linux_setlease;
519 struct vfs_handle_struct *getlock;
520 struct vfs_handle_struct *symlink;
521 struct vfs_handle_struct *vfs_readlink;
522 struct vfs_handle_struct *link;
523 struct vfs_handle_struct *mknod;
524 struct vfs_handle_struct *realpath;
525 struct vfs_handle_struct *notify_watch;
526 struct vfs_handle_struct *chflags;
527 struct vfs_handle_struct *file_id_create;
528 struct vfs_handle_struct *streaminfo;
529 struct vfs_handle_struct *get_real_filename;
531 /* NT ACL operations. */
533 struct vfs_handle_struct *fget_nt_acl;
534 struct vfs_handle_struct *get_nt_acl;
535 struct vfs_handle_struct *fset_nt_acl;
537 /* POSIX ACL operations. */
539 struct vfs_handle_struct *chmod_acl;
540 struct vfs_handle_struct *fchmod_acl;
542 struct vfs_handle_struct *sys_acl_get_entry;
543 struct vfs_handle_struct *sys_acl_get_tag_type;
544 struct vfs_handle_struct *sys_acl_get_permset;
545 struct vfs_handle_struct *sys_acl_get_qualifier;
546 struct vfs_handle_struct *sys_acl_get_file;
547 struct vfs_handle_struct *sys_acl_get_fd;
548 struct vfs_handle_struct *sys_acl_clear_perms;
549 struct vfs_handle_struct *sys_acl_add_perm;
550 struct vfs_handle_struct *sys_acl_to_text;
551 struct vfs_handle_struct *sys_acl_init;
552 struct vfs_handle_struct *sys_acl_create_entry;
553 struct vfs_handle_struct *sys_acl_set_tag_type;
554 struct vfs_handle_struct *sys_acl_set_qualifier;
555 struct vfs_handle_struct *sys_acl_set_permset;
556 struct vfs_handle_struct *sys_acl_valid;
557 struct vfs_handle_struct *sys_acl_set_file;
558 struct vfs_handle_struct *sys_acl_set_fd;
559 struct vfs_handle_struct *sys_acl_delete_def_file;
560 struct vfs_handle_struct *sys_acl_get_perm;
561 struct vfs_handle_struct *sys_acl_free_text;
562 struct vfs_handle_struct *sys_acl_free_acl;
563 struct vfs_handle_struct *sys_acl_free_qualifier;
566 struct vfs_handle_struct *getxattr;
567 struct vfs_handle_struct *lgetxattr;
568 struct vfs_handle_struct *fgetxattr;
569 struct vfs_handle_struct *listxattr;
570 struct vfs_handle_struct *llistxattr;
571 struct vfs_handle_struct *flistxattr;
572 struct vfs_handle_struct *removexattr;
573 struct vfs_handle_struct *lremovexattr;
574 struct vfs_handle_struct *fremovexattr;
575 struct vfs_handle_struct *setxattr;
576 struct vfs_handle_struct *lsetxattr;
577 struct vfs_handle_struct *fsetxattr;
580 struct vfs_handle_struct *aio_read;
581 struct vfs_handle_struct *aio_write;
582 struct vfs_handle_struct *aio_return;
583 struct vfs_handle_struct *aio_cancel;
584 struct vfs_handle_struct *aio_error;
585 struct vfs_handle_struct *aio_fsync;
586 struct vfs_handle_struct *aio_suspend;
587 struct vfs_handle_struct *aio_force;
589 /* offline operations */
590 struct vfs_handle_struct *is_offline;
591 struct vfs_handle_struct *set_offline;
596 Possible VFS operation layers (per-operation)
598 These values are used by VFS subsystem when building vfs_ops for connection
599 from multiple VFS modules. Internally, Samba differentiates only opaque and
600 transparent layers at this process. Other types are used for providing better
601 diagnosing facilities.
603 Most modules will provide transparent layers. Opaque layer is for modules
604 which implement actual file system calls (like DB-based VFS). For example,
605 default POSIX VFS which is built in into Samba is an opaque VFS module.
607 Other layer types (audit, splitter, scanner) were designed to provide different
608 degree of transparency and for diagnosing VFS module behaviour.
610 Each module can implement several layers at the same time provided that only
611 one layer is used per each operation.
615 typedef enum _vfs_op_layer {
616 SMB_VFS_LAYER_NOOP = -1, /* - For using in VFS module to indicate end of array */
617 /* of operations description */
618 SMB_VFS_LAYER_OPAQUE = 0, /* - Final level, does not call anything beyond itself */
619 SMB_VFS_LAYER_TRANSPARENT, /* - Normal operation, calls underlying layer after */
620 /* possibly changing passed data */
621 SMB_VFS_LAYER_LOGGER, /* - Logs data, calls underlying layer, logging may not */
623 SMB_VFS_LAYER_SPLITTER, /* - Splits operation, calls underlying layer _and_ own facility, */
624 /* then combines result */
625 SMB_VFS_LAYER_SCANNER /* - Checks data and possibly initiates additional */
626 /* file activity like logging to files _inside_ samba VFS */
630 VFS operation description. Each VFS module registers an array of vfs_op_tuple to VFS subsystem,
631 which describes all operations this module is willing to intercept.
632 VFS subsystem initializes then the conn->vfs_ops and conn->vfs_opaque_ops structs
633 using this information.
636 typedef struct vfs_op_tuple {
643 typedef struct vfs_handle_struct {
644 struct vfs_handle_struct *next, *prev;
646 struct vfs_ops vfs_next;
647 struct connection_struct *conn;
649 void (*free_data)(void **data);
653 typedef struct vfs_statvfs_struct {
654 /* For undefined recommended transfer size return -1 in that field */
655 uint32 OptimalTransferSize; /* bsize on some os, iosize on other os */
659 The next three fields are in terms of the block size.
660 (above). If block size is unknown, 4096 would be a
661 reasonable block size for a server to report.
662 Note that returning the blocks/blocksavail removes need
663 to make a second call (to QFSInfo level 0x103 to get this info.
664 UserBlockAvail is typically less than or equal to BlocksAvail,
665 if no distinction is made return the same value in each.
668 uint64_t TotalBlocks;
669 uint64_t BlocksAvail; /* bfree */
670 uint64_t UserBlocksAvail; /* bavail */
672 /* For undefined Node fields or FSID return -1 */
673 uint64_t TotalFileNodes;
674 uint64_t FreeFileNodes;
675 uint64_t FsIdentifier; /* fsid */
676 /* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
677 /* NB flags can come from FILE_SYSTEM_DEVICE_INFO call */
680 } vfs_statvfs_struct;
682 /* Add a new FSP extension of the given type. Returns a pointer to the
685 #define VFS_ADD_FSP_EXTENSION(handle, fsp, type, destroy_fn) \
686 vfs_add_fsp_extension_notype(handle, (fsp), sizeof(type), (destroy_fn))
688 /* Return a pointer to the existing FSP extension data. */
689 #define VFS_FETCH_FSP_EXTENSION(handle, fsp) \
690 vfs_fetch_fsp_extension(handle, (fsp))
692 /* Return the talloc context associated with an FSP extension. */
693 #define VFS_MEMCTX_FSP_EXTENSION(handle, fsp) \
694 vfs_memctx_fsp_extension(handle, (fsp))
696 /* Remove and destroy an FSP extension. */
697 #define VFS_REMOVE_FSP_EXTENSION(handle, fsp) \
698 vfs_remove_fsp_extension((handle), (fsp))
700 #define SMB_VFS_HANDLE_GET_DATA(handle, datap, type, ret) { \
701 if (!(handle)||((datap=(type *)(handle)->data)==NULL)) { \
702 DEBUG(0,("%s() failed to get vfs_handle->data!\n",FUNCTION_MACRO)); \
707 #define SMB_VFS_HANDLE_SET_DATA(handle, datap, free_fn, type, ret) { \
709 DEBUG(0,("%s() failed to set handle->data!\n",FUNCTION_MACRO)); \
712 if ((handle)->free_data) { \
713 (handle)->free_data(&(handle)->data); \
715 (handle)->data = (void *)datap; \
716 (handle)->free_data = free_fn; \
720 #define SMB_VFS_HANDLE_FREE_DATA(handle) { \
721 if ((handle) && (handle)->free_data) { \
722 (handle)->free_data(&(handle)->data); \
726 /* Check whether module-specific data handle was already allocated or not */
727 #define SMB_VFS_HANDLE_TEST_DATA(handle) ( !(handle) || !(handle)->data ? False : True )
729 #define SMB_VFS_OP(x) ((void *) x)
731 #define DEFAULT_VFS_MODULE_NAME "/[Default VFS]/"
733 #include "vfs_macros.h"