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/>.
23 /* prototypes for static functions first - for clarity */
25 static bool smb_ace_to_internal(acl_entry_t posix_ace,
26 struct smb_acl_entry *ace);
27 static struct smb_acl_t *smb_acl_to_internal(acl_t acl);
28 static int smb_acl_set_mode(acl_entry_t entry, SMB_ACL_PERM_T perm);
29 static acl_t smb_acl_to_posix(const struct smb_acl_t *acl);
32 /* public functions - the api */
34 SMB_ACL_T posixacl_sys_acl_get_file(vfs_handle_struct *handle,
38 struct smb_acl_t *result;
43 case SMB_ACL_TYPE_ACCESS:
44 acl_type = ACL_TYPE_ACCESS;
46 case SMB_ACL_TYPE_DEFAULT:
47 acl_type = ACL_TYPE_DEFAULT;
54 acl = acl_get_file(path_p, acl_type);
60 result = smb_acl_to_internal(acl);
65 SMB_ACL_T posixacl_sys_acl_get_fd(vfs_handle_struct *handle,
68 struct smb_acl_t *result;
69 acl_t acl = acl_get_fd(fsp->fh->fd);
75 result = smb_acl_to_internal(acl);
80 int posixacl_sys_acl_set_file(vfs_handle_struct *handle,
89 DEBUG(10, ("Calling acl_set_file: %s, %d\n", name, type));
92 case SMB_ACL_TYPE_ACCESS:
93 acl_type = ACL_TYPE_ACCESS;
95 case SMB_ACL_TYPE_DEFAULT:
96 acl_type = ACL_TYPE_DEFAULT;
103 if ((acl = smb_acl_to_posix(theacl)) == NULL) {
106 res = acl_set_file(name, acl_type, acl);
108 DEBUG(10, ("acl_set_file failed: %s\n", strerror(errno)));
114 int posixacl_sys_acl_set_fd(vfs_handle_struct *handle,
119 acl_t acl = smb_acl_to_posix(theacl);
123 res = acl_set_fd(fsp->fh->fd, acl);
128 int posixacl_sys_acl_delete_def_file(vfs_handle_struct *handle,
131 return acl_delete_def_file(path);
135 /* private functions */
137 static bool smb_ace_to_internal(acl_entry_t posix_ace,
138 struct smb_acl_entry *ace)
141 acl_permset_t permset;
143 if (acl_get_tag_type(posix_ace, &tag) != 0) {
144 DEBUG(0, ("smb_acl_get_tag_type failed\n"));
150 ace->a_type = SMB_ACL_USER;
153 ace->a_type = SMB_ACL_USER_OBJ;
156 ace->a_type = SMB_ACL_GROUP;
159 ace->a_type = SMB_ACL_GROUP_OBJ;
162 ace->a_type = SMB_ACL_OTHER;
165 ace->a_type = SMB_ACL_MASK;
168 DEBUG(0, ("unknown tag type %d\n", (unsigned int)tag));
171 switch(ace->a_type) {
173 uid_t *puid = (uid_t *)acl_get_qualifier(posix_ace);
175 DEBUG(0, ("smb_acl_get_qualifier failed\n"));
183 case SMB_ACL_GROUP: {
184 gid_t *pgid = (uid_t *)acl_get_qualifier(posix_ace);
186 DEBUG(0, ("smb_acl_get_qualifier failed\n"));
196 if (acl_get_permset(posix_ace, &permset) != 0) {
197 DEBUG(0, ("smb_acl_get_mode failed\n"));
201 #ifdef HAVE_ACL_GET_PERM_NP
202 ace->a_perm |= (acl_get_perm_np(permset, ACL_READ) ? SMB_ACL_READ : 0);
203 ace->a_perm |= (acl_get_perm_np(permset, ACL_WRITE) ? SMB_ACL_WRITE : 0);
204 ace->a_perm |= (acl_get_perm_np(permset, ACL_EXECUTE) ? SMB_ACL_EXECUTE : 0);
206 ace->a_perm |= (acl_get_perm(permset, ACL_READ) ? SMB_ACL_READ : 0);
207 ace->a_perm |= (acl_get_perm(permset, ACL_WRITE) ? SMB_ACL_WRITE : 0);
208 ace->a_perm |= (acl_get_perm(permset, ACL_EXECUTE) ? SMB_ACL_EXECUTE : 0);
213 static struct smb_acl_t *smb_acl_to_internal(acl_t acl)
215 struct smb_acl_t *result = SMB_MALLOC_P(struct smb_acl_t);
216 int entry_id = ACL_FIRST_ENTRY;
218 if (result == NULL) {
221 ZERO_STRUCTP(result);
222 while (acl_get_entry(acl, entry_id, &e) == 1) {
224 entry_id = ACL_NEXT_ENTRY;
226 result = (struct smb_acl_t *)SMB_REALLOC(
227 result, sizeof(struct smb_acl_t) +
228 (sizeof(struct smb_acl_entry) * (result->count+1)));
229 if (result == NULL) {
230 DEBUG(0, ("SMB_REALLOC failed\n"));
235 if (!smb_ace_to_internal(e, &result->acl[result->count])) {
245 static int smb_acl_set_mode(acl_entry_t entry, SMB_ACL_PERM_T perm)
248 acl_permset_t permset;
250 if ((ret = acl_get_permset(entry, &permset)) != 0) {
253 if ((ret = acl_clear_perms(permset)) != 0) {
256 if ((perm & SMB_ACL_READ) &&
257 ((ret = acl_add_perm(permset, ACL_READ)) != 0)) {
260 if ((perm & SMB_ACL_WRITE) &&
261 ((ret = acl_add_perm(permset, ACL_WRITE)) != 0)) {
264 if ((perm & SMB_ACL_EXECUTE) &&
265 ((ret = acl_add_perm(permset, ACL_EXECUTE)) != 0)) {
268 return acl_set_permset(entry, permset);
271 static acl_t smb_acl_to_posix(const struct smb_acl_t *acl)
276 result = acl_init(acl->count);
277 if (result == NULL) {
278 DEBUG(10, ("acl_init failed\n"));
282 for (i=0; i<acl->count; i++) {
283 const struct smb_acl_entry *entry = &acl->acl[i];
287 if (acl_create_entry(&result, &e) != 0) {
288 DEBUG(1, ("acl_create_entry failed: %s\n",
293 switch (entry->a_type) {
297 case SMB_ACL_USER_OBJ:
303 case SMB_ACL_GROUP_OBJ:
313 DEBUG(1, ("Unknown tag value %d\n", entry->a_type));
317 if (acl_set_tag_type(e, tag) != 0) {
318 DEBUG(10, ("acl_set_tag_type(%d) failed: %s\n",
319 tag, strerror(errno)));
323 switch (entry->a_type) {
325 if (acl_set_qualifier(e, &entry->uid) != 0) {
326 DEBUG(1, ("acl_set_qualifiier failed: %s\n",
332 if (acl_set_qualifier(e, &entry->gid) != 0) {
333 DEBUG(1, ("acl_set_qualifiier failed: %s\n",
338 default: /* Shut up, compiler! :-) */
342 if (smb_acl_set_mode(e, entry->a_perm) != 0) {
347 if (acl_valid(result) != 0) {
348 DEBUG(0, ("smb_acl_to_posix: ACL is invalid for set (%s)\n",
356 if (result != NULL) {
362 /* VFS operations structure */
364 static vfs_op_tuple posixacl_op_tuples[] = {
365 /* Disk operations */
366 {SMB_VFS_OP(posixacl_sys_acl_get_file),
367 SMB_VFS_OP_SYS_ACL_GET_FILE,
368 SMB_VFS_LAYER_TRANSPARENT},
370 {SMB_VFS_OP(posixacl_sys_acl_get_fd),
371 SMB_VFS_OP_SYS_ACL_GET_FD,
372 SMB_VFS_LAYER_TRANSPARENT},
374 {SMB_VFS_OP(posixacl_sys_acl_set_file),
375 SMB_VFS_OP_SYS_ACL_SET_FILE,
376 SMB_VFS_LAYER_TRANSPARENT},
378 {SMB_VFS_OP(posixacl_sys_acl_set_fd),
379 SMB_VFS_OP_SYS_ACL_SET_FD,
380 SMB_VFS_LAYER_TRANSPARENT},
382 {SMB_VFS_OP(posixacl_sys_acl_delete_def_file),
383 SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
384 SMB_VFS_LAYER_TRANSPARENT},
391 NTSTATUS vfs_posixacl_init(void);
392 NTSTATUS vfs_posixacl_init(void)
394 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "posixacl",