2 Unix SMB/CIFS implementation.
3 VFS structures and parameters
4 Copyright (C) Jeremy Allison 1999-2003
5 Copyright (C) Tim Potter 1999
6 Copyright (C) Alexander Bokovoy 2002
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 #define SMB_VFS_INTERFACE_VERSION 10
61 /* to bug old modules witch are trying to compile with the old functions */
62 #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 };
63 #define lp_parm_string __ERROR_please_port_lp_parm_string_to_lp_parm_const_string_or_lp_parm_talloc_string { \
64 __ERROR_please_port_lp_parm_string_to_lp_parm_const_string_or_lp_parm_talloc_string };
65 #define lp_vfs_options __ERROR_please_donot_use_lp_vfs_options_anymore_use_lp_parm_xxxx_functions_instead { \
66 __ERROR_please_donot_use_lp_vfs_options_anymore_use_lp_parm_xxxx_functions_instead };
69 All intercepted VFS operations must be declared as static functions inside module source
70 in order to keep smbd namespace unpolluted. See source of audit, extd_audit, fake_perms and recycle
71 example VFS modules for more details.
74 /* VFS operations structure */
76 struct vfs_handle_struct;
77 struct connection_struct;
79 struct security_descriptor_info;
82 Available VFS operations. These values must be in sync with vfs_ops struct
83 (struct vfs_fn_pointers and struct vfs_handle_pointers inside of struct vfs_ops).
84 In particular, if new operations are added to vfs_ops, appropriate constants
85 should be added to vfs_op_type so that order of them kept same as in vfs_ops.
88 typedef enum _vfs_op_type {
93 SMB_VFS_OP_CONNECT = 0,
94 SMB_VFS_OP_DISCONNECT,
98 SMB_VFS_OP_GET_SHADOW_COPY_DATA,
101 /* Directory operations */
109 /* File operations */
132 SMB_VFS_OP_FTRUNCATE,
140 /* NT ACL operations. */
142 SMB_VFS_OP_FGET_NT_ACL,
143 SMB_VFS_OP_GET_NT_ACL,
144 SMB_VFS_OP_FSET_NT_ACL,
145 SMB_VFS_OP_SET_NT_ACL,
147 /* POSIX ACL operations. */
149 SMB_VFS_OP_CHMOD_ACL,
150 SMB_VFS_OP_FCHMOD_ACL,
152 SMB_VFS_OP_SYS_ACL_GET_ENTRY,
153 SMB_VFS_OP_SYS_ACL_GET_TAG_TYPE,
154 SMB_VFS_OP_SYS_ACL_GET_PERMSET,
155 SMB_VFS_OP_SYS_ACL_GET_QUALIFIER,
156 SMB_VFS_OP_SYS_ACL_GET_FILE,
157 SMB_VFS_OP_SYS_ACL_GET_FD,
158 SMB_VFS_OP_SYS_ACL_CLEAR_PERMS,
159 SMB_VFS_OP_SYS_ACL_ADD_PERM,
160 SMB_VFS_OP_SYS_ACL_TO_TEXT,
161 SMB_VFS_OP_SYS_ACL_INIT,
162 SMB_VFS_OP_SYS_ACL_CREATE_ENTRY,
163 SMB_VFS_OP_SYS_ACL_SET_TAG_TYPE,
164 SMB_VFS_OP_SYS_ACL_SET_QUALIFIER,
165 SMB_VFS_OP_SYS_ACL_SET_PERMSET,
166 SMB_VFS_OP_SYS_ACL_VALID,
167 SMB_VFS_OP_SYS_ACL_SET_FILE,
168 SMB_VFS_OP_SYS_ACL_SET_FD,
169 SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
170 SMB_VFS_OP_SYS_ACL_GET_PERM,
171 SMB_VFS_OP_SYS_ACL_FREE_TEXT,
172 SMB_VFS_OP_SYS_ACL_FREE_ACL,
173 SMB_VFS_OP_SYS_ACL_FREE_QUALIFIER,
177 SMB_VFS_OP_LGETXATTR,
178 SMB_VFS_OP_FGETXATTR,
179 SMB_VFS_OP_LISTXATTR,
180 SMB_VFS_OP_LLISTXATTR,
181 SMB_VFS_OP_FLISTXATTR,
182 SMB_VFS_OP_REMOVEXATTR,
183 SMB_VFS_OP_LREMOVEXATTR,
184 SMB_VFS_OP_FREMOVEXATTR,
186 SMB_VFS_OP_LSETXATTR,
187 SMB_VFS_OP_FSETXATTR,
189 /* This should always be last enum value */
195 Please keep vfs_op_type, struct vfs_fn_pointers and struct vfs_handles_pointers in sync.
198 struct vfs_fn_pointers {
199 /* Disk operations */
201 int (*connect)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *service, const char *user);
202 void (*disconnect)(struct vfs_handle_struct *handle, struct connection_struct *conn);
203 SMB_BIG_UINT (*disk_free)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path, BOOL small_query, SMB_BIG_UINT *bsize,
204 SMB_BIG_UINT *dfree, SMB_BIG_UINT *dsize);
205 int (*get_quota)(struct vfs_handle_struct *handle, struct connection_struct *conn, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
206 int (*set_quota)(struct vfs_handle_struct *handle, struct connection_struct *conn, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
207 int (*get_shadow_copy_data)(struct vfs_handle_struct *handle, struct files_struct *fsp, SHADOW_COPY_DATA *shadow_copy_data, BOOL labels);
209 /* Directory operations */
211 DIR *(*opendir)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *fname);
212 struct dirent *(*readdir)(struct vfs_handle_struct *handle, struct connection_struct *conn, DIR *dirp);
213 int (*mkdir)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path, mode_t mode);
214 int (*rmdir)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path);
215 int (*closedir)(struct vfs_handle_struct *handle, struct connection_struct *conn, DIR *dir);
217 /* File operations */
219 int (*open)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *fname, int flags, mode_t mode);
220 int (*close)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd);
221 ssize_t (*read)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, void *data, size_t n);
222 ssize_t (*pread)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, void *data, size_t n, SMB_OFF_T offset);
223 ssize_t (*write)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, const void *data, size_t n);
224 ssize_t (*pwrite)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, const void *data, size_t n, SMB_OFF_T offset);
225 SMB_OFF_T (*lseek)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_OFF_T offset, int whence);
226 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);
227 int (*rename)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *old, const char *new);
228 int (*fsync)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd);
229 int (*stat)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *fname, SMB_STRUCT_STAT *sbuf);
230 int (*fstat)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_STRUCT_STAT *sbuf);
231 int (*lstat)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path, SMB_STRUCT_STAT *sbuf);
232 int (*unlink)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path);
233 int (*chmod)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path, mode_t mode);
234 int (*fchmod)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, mode_t mode);
235 int (*chown)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path, uid_t uid, gid_t gid);
236 int (*fchown)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, uid_t uid, gid_t gid);
237 int (*chdir)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path);
238 char *(*getwd)(struct vfs_handle_struct *handle, struct connection_struct *conn, char *buf);
239 int (*utime)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path, struct utimbuf *times);
240 int (*ftruncate)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_OFF_T offset);
241 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);
242 int (*symlink)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *oldpath, const char *newpath);
243 int (*readlink)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path, char *buf, size_t bufsiz);
244 int (*link)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *oldpath, const char *newpath);
245 int (*mknod)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path, mode_t mode, SMB_DEV_T dev);
246 char *(*realpath)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path, char *resolved_path);
248 /* NT ACL operations. */
250 size_t (*fget_nt_acl)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, uint32 security_info, struct security_descriptor_info **ppdesc);
251 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);
252 BOOL (*fset_nt_acl)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, uint32 security_info_sent, struct security_descriptor_info *psd);
253 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);
255 /* POSIX ACL operations. */
257 int (*chmod_acl)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *name, mode_t mode);
258 int (*fchmod_acl)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, mode_t mode);
260 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);
261 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);
262 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);
263 void * (*sys_acl_get_qualifier)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_ENTRY_T entry_d);
264 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);
265 SMB_ACL_T (*sys_acl_get_fd)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd);
266 int (*sys_acl_clear_perms)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_PERMSET_T permset);
267 int (*sys_acl_add_perm)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
268 char * (*sys_acl_to_text)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_T theacl, ssize_t *plen);
269 SMB_ACL_T (*sys_acl_init)(struct vfs_handle_struct *handle, struct connection_struct *conn, int count);
270 int (*sys_acl_create_entry)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry);
271 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);
272 int (*sys_acl_set_qualifier)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_ENTRY_T entry, void *qual);
273 int (*sys_acl_set_permset)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_ENTRY_T entry, SMB_ACL_PERMSET_T permset);
274 int (*sys_acl_valid)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_T theacl );
275 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);
276 int (*sys_acl_set_fd)(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_ACL_T theacl);
277 int (*sys_acl_delete_def_file)(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path);
278 int (*sys_acl_get_perm)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
279 int (*sys_acl_free_text)(struct vfs_handle_struct *handle, struct connection_struct *conn, char *text);
280 int (*sys_acl_free_acl)(struct vfs_handle_struct *handle, struct connection_struct *conn, SMB_ACL_T posix_acl);
281 int (*sys_acl_free_qualifier)(struct vfs_handle_struct *handle, struct connection_struct *conn, void *qualifier, SMB_ACL_TAG_T tagtype);
284 ssize_t (*getxattr)(struct vfs_handle_struct *handle,struct connection_struct *conn,const char *path, const char *name, void *value, size_t size);
285 ssize_t (*lgetxattr)(struct vfs_handle_struct *handle,struct connection_struct *conn,const char *path, const char *name, void *value, size_t size);
286 ssize_t (*fgetxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp,int fd, const char *name, void *value, size_t size);
287 ssize_t (*listxattr)(struct vfs_handle_struct *handle, struct connection_struct *conn,const char *path, char *list, size_t size);
288 ssize_t (*llistxattr)(struct vfs_handle_struct *handle, struct connection_struct *conn,const char *path, char *list, size_t size);
289 ssize_t (*flistxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp,int fd, char *list, size_t size);
290 int (*removexattr)(struct vfs_handle_struct *handle, struct connection_struct *conn,const char *path, const char *name);
291 int (*lremovexattr)(struct vfs_handle_struct *handle, struct connection_struct *conn,const char *path, const char *name);
292 int (*fremovexattr)(struct vfs_handle_struct *handle, struct files_struct *fsp,int filedes, const char *name);
293 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);
294 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);
295 int (*fsetxattr)(struct vfs_handle_struct *handle, struct files_struct *fsp,int filedes, const char *name, const void *value, size_t size, int flags);
299 struct vfs_handles_pointers {
300 /* Disk operations */
302 struct vfs_handle_struct *connect;
303 struct vfs_handle_struct *disconnect;
304 struct vfs_handle_struct *disk_free;
305 struct vfs_handle_struct *get_quota;
306 struct vfs_handle_struct *set_quota;
307 struct vfs_handle_struct *get_shadow_copy_data;
309 /* Directory operations */
311 struct vfs_handle_struct *opendir;
312 struct vfs_handle_struct *readdir;
313 struct vfs_handle_struct *mkdir;
314 struct vfs_handle_struct *rmdir;
315 struct vfs_handle_struct *closedir;
317 /* File operations */
319 struct vfs_handle_struct *open;
320 struct vfs_handle_struct *close;
321 struct vfs_handle_struct *read;
322 struct vfs_handle_struct *pread;
323 struct vfs_handle_struct *write;
324 struct vfs_handle_struct *pwrite;
325 struct vfs_handle_struct *lseek;
326 struct vfs_handle_struct *sendfile;
327 struct vfs_handle_struct *rename;
328 struct vfs_handle_struct *fsync;
329 struct vfs_handle_struct *stat;
330 struct vfs_handle_struct *fstat;
331 struct vfs_handle_struct *lstat;
332 struct vfs_handle_struct *unlink;
333 struct vfs_handle_struct *chmod;
334 struct vfs_handle_struct *fchmod;
335 struct vfs_handle_struct *chown;
336 struct vfs_handle_struct *fchown;
337 struct vfs_handle_struct *chdir;
338 struct vfs_handle_struct *getwd;
339 struct vfs_handle_struct *utime;
340 struct vfs_handle_struct *ftruncate;
341 struct vfs_handle_struct *lock;
342 struct vfs_handle_struct *symlink;
343 struct vfs_handle_struct *readlink;
344 struct vfs_handle_struct *link;
345 struct vfs_handle_struct *mknod;
346 struct vfs_handle_struct *realpath;
348 /* NT ACL operations. */
350 struct vfs_handle_struct *fget_nt_acl;
351 struct vfs_handle_struct *get_nt_acl;
352 struct vfs_handle_struct *fset_nt_acl;
353 struct vfs_handle_struct *set_nt_acl;
355 /* POSIX ACL operations. */
357 struct vfs_handle_struct *chmod_acl;
358 struct vfs_handle_struct *fchmod_acl;
360 struct vfs_handle_struct *sys_acl_get_entry;
361 struct vfs_handle_struct *sys_acl_get_tag_type;
362 struct vfs_handle_struct *sys_acl_get_permset;
363 struct vfs_handle_struct *sys_acl_get_qualifier;
364 struct vfs_handle_struct *sys_acl_get_file;
365 struct vfs_handle_struct *sys_acl_get_fd;
366 struct vfs_handle_struct *sys_acl_clear_perms;
367 struct vfs_handle_struct *sys_acl_add_perm;
368 struct vfs_handle_struct *sys_acl_to_text;
369 struct vfs_handle_struct *sys_acl_init;
370 struct vfs_handle_struct *sys_acl_create_entry;
371 struct vfs_handle_struct *sys_acl_set_tag_type;
372 struct vfs_handle_struct *sys_acl_set_qualifier;
373 struct vfs_handle_struct *sys_acl_set_permset;
374 struct vfs_handle_struct *sys_acl_valid;
375 struct vfs_handle_struct *sys_acl_set_file;
376 struct vfs_handle_struct *sys_acl_set_fd;
377 struct vfs_handle_struct *sys_acl_delete_def_file;
378 struct vfs_handle_struct *sys_acl_get_perm;
379 struct vfs_handle_struct *sys_acl_free_text;
380 struct vfs_handle_struct *sys_acl_free_acl;
381 struct vfs_handle_struct *sys_acl_free_qualifier;
384 struct vfs_handle_struct *getxattr;
385 struct vfs_handle_struct *lgetxattr;
386 struct vfs_handle_struct *fgetxattr;
387 struct vfs_handle_struct *listxattr;
388 struct vfs_handle_struct *llistxattr;
389 struct vfs_handle_struct *flistxattr;
390 struct vfs_handle_struct *removexattr;
391 struct vfs_handle_struct *lremovexattr;
392 struct vfs_handle_struct *fremovexattr;
393 struct vfs_handle_struct *setxattr;
394 struct vfs_handle_struct *lsetxattr;
395 struct vfs_handle_struct *fsetxattr;
401 Possible VFS operation layers (per-operation)
403 These values are used by VFS subsystem when building vfs_ops for connection
404 from multiple VFS modules. Internally, Samba differentiates only opaque and
405 transparent layers at this process. Other types are used for providing better
406 diagnosing facilities.
408 Most modules will provide transparent layers. Opaque layer is for modules
409 which implement actual file system calls (like DB-based VFS). For example,
410 default POSIX VFS which is built in into Samba is an opaque VFS module.
412 Other layer types (audit, splitter, scanner) were designed to provide different
413 degree of transparency and for diagnosing VFS module behaviour.
415 Each module can implement several layers at the same time provided that only
416 one layer is used per each operation.
420 typedef enum _vfs_op_layer {
421 SMB_VFS_LAYER_NOOP = -1, /* - For using in VFS module to indicate end of array */
422 /* of operations description */
423 SMB_VFS_LAYER_OPAQUE = 0, /* - Final level, does not call anything beyond itself */
424 SMB_VFS_LAYER_TRANSPARENT, /* - Normal operation, calls underlying layer after */
425 /* possibly changing passed data */
426 SMB_VFS_LAYER_LOGGER, /* - Logs data, calls underlying layer, logging may not */
428 SMB_VFS_LAYER_SPLITTER, /* - Splits operation, calls underlying layer _and_ own facility, */
429 /* then combines result */
430 SMB_VFS_LAYER_SCANNER /* - Checks data and possibly initiates additional */
431 /* file activity like logging to files _inside_ samba VFS */
435 VFS operation description. Each VFS module registers an array of vfs_op_tuple to VFS subsystem,
436 which describes all operations this module is willing to intercept.
437 VFS subsystem initializes then the conn->vfs_ops and conn->vfs_opaque_ops structs
438 using this information.
441 typedef struct _vfs_op_tuple {
448 typedef struct vfs_handle_struct {
449 struct vfs_handle_struct *next, *prev;
451 struct vfs_ops vfs_next;
452 struct connection_struct *conn;
454 void (*free_data)(void **data);
458 #define SMB_VFS_HANDLE_GET_DATA(handle, datap, type, ret) { \
459 if (!(handle)||((datap=(type *)(handle)->data)==NULL)) { \
460 DEBUG(0,("%s() failed to get vfs_handle->data!\n",FUNCTION_MACRO)); \
465 #define SMB_VFS_HANDLE_SET_DATA(handle, datap, free_fn, type, ret) { \
467 DEBUG(0,("%s() failed to set handle->data!\n",FUNCTION_MACRO)); \
470 if ((handle)->free_data) { \
471 (handle)->free_data(&(handle)->data); \
473 (handle)->data = (void *)datap; \
474 (handle)->free_data = free_fn; \
478 #define SMB_VFS_HANDLE_FREE_DATA(handle) { \
479 if ((handle) && (handle)->free_data) { \
480 (handle)->free_data(&(handle)->data); \
484 /* Check whether module-specific data handle was already allocated or not */
485 #define SMB_VFS_HANDLE_TEST_DATA(handle) ( !(handle) || !(handle)->data ? False : True )
487 #define SMB_VFS_OP(x) ((void *) x)
490 #include "vfs_macros.h"