2 Unix SMB/Netbios implementation.
3 VFS module to get and set posix acls
4 Copyright (C) Volker Lendecke 2006
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
21 #include "system/filesys.h"
22 #include "smbd/smbd.h"
23 #include "modules/vfs_posixacl.h"
25 /* prototypes for static functions first - for clarity */
27 static bool smb_ace_to_internal(acl_entry_t posix_ace
,
28 struct smb_acl_entry
*ace
);
29 static struct smb_acl_t
*smb_acl_to_internal(acl_t acl
);
30 static int smb_acl_set_mode(acl_entry_t entry
, SMB_ACL_PERM_T perm
);
31 static acl_t
smb_acl_to_posix(const struct smb_acl_t
*acl
);
34 /* public functions - the api */
36 SMB_ACL_T
posixacl_sys_acl_get_file(vfs_handle_struct
*handle
,
40 struct smb_acl_t
*result
;
45 case SMB_ACL_TYPE_ACCESS
:
46 acl_type
= ACL_TYPE_ACCESS
;
48 case SMB_ACL_TYPE_DEFAULT
:
49 acl_type
= ACL_TYPE_DEFAULT
;
56 acl
= acl_get_file(path_p
, acl_type
);
62 result
= smb_acl_to_internal(acl
);
67 SMB_ACL_T
posixacl_sys_acl_get_fd(vfs_handle_struct
*handle
,
70 struct smb_acl_t
*result
;
71 acl_t acl
= acl_get_fd(fsp
->fh
->fd
);
77 result
= smb_acl_to_internal(acl
);
82 int posixacl_sys_acl_set_file(vfs_handle_struct
*handle
,
91 DEBUG(10, ("Calling acl_set_file: %s, %d\n", name
, type
));
94 case SMB_ACL_TYPE_ACCESS
:
95 acl_type
= ACL_TYPE_ACCESS
;
97 case SMB_ACL_TYPE_DEFAULT
:
98 acl_type
= ACL_TYPE_DEFAULT
;
105 if ((acl
= smb_acl_to_posix(theacl
)) == NULL
) {
108 res
= acl_set_file(name
, acl_type
, acl
);
110 DEBUG(10, ("acl_set_file failed: %s\n", strerror(errno
)));
116 int posixacl_sys_acl_set_fd(vfs_handle_struct
*handle
,
121 acl_t acl
= smb_acl_to_posix(theacl
);
125 res
= acl_set_fd(fsp
->fh
->fd
, acl
);
130 int posixacl_sys_acl_delete_def_file(vfs_handle_struct
*handle
,
133 return acl_delete_def_file(path
);
137 /* private functions */
139 static bool smb_ace_to_internal(acl_entry_t posix_ace
,
140 struct smb_acl_entry
*ace
)
143 acl_permset_t permset
;
145 if (acl_get_tag_type(posix_ace
, &tag
) != 0) {
146 DEBUG(0, ("smb_acl_get_tag_type failed\n"));
152 ace
->a_type
= SMB_ACL_USER
;
155 ace
->a_type
= SMB_ACL_USER_OBJ
;
158 ace
->a_type
= SMB_ACL_GROUP
;
161 ace
->a_type
= SMB_ACL_GROUP_OBJ
;
164 ace
->a_type
= SMB_ACL_OTHER
;
167 ace
->a_type
= SMB_ACL_MASK
;
170 DEBUG(0, ("unknown tag type %d\n", (unsigned int)tag
));
173 switch(ace
->a_type
) {
175 uid_t
*puid
= (uid_t
*)acl_get_qualifier(posix_ace
);
177 DEBUG(0, ("smb_acl_get_qualifier failed\n"));
185 case SMB_ACL_GROUP
: {
186 gid_t
*pgid
= (uid_t
*)acl_get_qualifier(posix_ace
);
188 DEBUG(0, ("smb_acl_get_qualifier failed\n"));
198 if (acl_get_permset(posix_ace
, &permset
) != 0) {
199 DEBUG(0, ("smb_acl_get_mode failed\n"));
203 #ifdef HAVE_ACL_GET_PERM_NP
204 ace
->a_perm
|= (acl_get_perm_np(permset
, ACL_READ
) ? SMB_ACL_READ
: 0);
205 ace
->a_perm
|= (acl_get_perm_np(permset
, ACL_WRITE
) ? SMB_ACL_WRITE
: 0);
206 ace
->a_perm
|= (acl_get_perm_np(permset
, ACL_EXECUTE
) ? SMB_ACL_EXECUTE
: 0);
208 ace
->a_perm
|= (acl_get_perm(permset
, ACL_READ
) ? SMB_ACL_READ
: 0);
209 ace
->a_perm
|= (acl_get_perm(permset
, ACL_WRITE
) ? SMB_ACL_WRITE
: 0);
210 ace
->a_perm
|= (acl_get_perm(permset
, ACL_EXECUTE
) ? SMB_ACL_EXECUTE
: 0);
215 static struct smb_acl_t
*smb_acl_to_internal(acl_t acl
)
217 struct smb_acl_t
*result
= sys_acl_init(0);
218 int entry_id
= ACL_FIRST_ENTRY
;
220 if (result
== NULL
) {
223 while (acl_get_entry(acl
, entry_id
, &e
) == 1) {
225 entry_id
= ACL_NEXT_ENTRY
;
227 result
->acl
= talloc_realloc(result
, result
->acl
,
228 struct smb_acl_entry
, result
->count
+1);
229 if (result
->acl
== NULL
) {
231 DEBUG(0, ("talloc_realloc failed\n"));
236 if (!smb_ace_to_internal(e
, &result
->acl
[result
->count
])) {
246 static int smb_acl_set_mode(acl_entry_t entry
, SMB_ACL_PERM_T perm
)
249 acl_permset_t permset
;
251 if ((ret
= acl_get_permset(entry
, &permset
)) != 0) {
254 if ((ret
= acl_clear_perms(permset
)) != 0) {
257 if ((perm
& SMB_ACL_READ
) &&
258 ((ret
= acl_add_perm(permset
, ACL_READ
)) != 0)) {
261 if ((perm
& SMB_ACL_WRITE
) &&
262 ((ret
= acl_add_perm(permset
, ACL_WRITE
)) != 0)) {
265 if ((perm
& SMB_ACL_EXECUTE
) &&
266 ((ret
= acl_add_perm(permset
, ACL_EXECUTE
)) != 0)) {
269 return acl_set_permset(entry
, permset
);
272 static acl_t
smb_acl_to_posix(const struct smb_acl_t
*acl
)
277 result
= acl_init(acl
->count
);
278 if (result
== NULL
) {
279 DEBUG(10, ("acl_init failed\n"));
283 for (i
=0; i
<acl
->count
; i
++) {
284 const struct smb_acl_entry
*entry
= &acl
->acl
[i
];
288 if (acl_create_entry(&result
, &e
) != 0) {
289 DEBUG(1, ("acl_create_entry failed: %s\n",
294 switch (entry
->a_type
) {
298 case SMB_ACL_USER_OBJ
:
304 case SMB_ACL_GROUP_OBJ
:
314 DEBUG(1, ("Unknown tag value %d\n", entry
->a_type
));
318 if (acl_set_tag_type(e
, tag
) != 0) {
319 DEBUG(10, ("acl_set_tag_type(%d) failed: %s\n",
320 tag
, strerror(errno
)));
324 switch (entry
->a_type
) {
326 if (acl_set_qualifier(e
, &entry
->uid
) != 0) {
327 DEBUG(1, ("acl_set_qualifiier failed: %s\n",
333 if (acl_set_qualifier(e
, &entry
->gid
) != 0) {
334 DEBUG(1, ("acl_set_qualifiier failed: %s\n",
339 default: /* Shut up, compiler! :-) */
343 if (smb_acl_set_mode(e
, entry
->a_perm
) != 0) {
348 if (acl_valid(result
) != 0) {
349 char *acl_string
= sys_acl_to_text(acl
, NULL
);
350 DEBUG(0, ("smb_acl_to_posix: ACL %s is invalid for set (%s)\n",
351 acl_string
, strerror(errno
)));
352 SAFE_FREE(acl_string
);
359 if (result
!= NULL
) {
365 /* VFS operations structure */
367 static struct vfs_fn_pointers posixacl_fns
= {
368 .sys_acl_get_file_fn
= posixacl_sys_acl_get_file
,
369 .sys_acl_get_fd_fn
= posixacl_sys_acl_get_fd
,
370 .sys_acl_set_file_fn
= posixacl_sys_acl_set_file
,
371 .sys_acl_set_fd_fn
= posixacl_sys_acl_set_fd
,
372 .sys_acl_delete_def_file_fn
= posixacl_sys_acl_delete_def_file
,
375 NTSTATUS
vfs_posixacl_init(void);
376 NTSTATUS
vfs_posixacl_init(void)
378 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION
, "posixacl",