Imported Upstream version 2.2.51
[platform/upstream/acl.git] / libacl / acl_free.c
1 /*
2   File: acl_free.c
3
4   Copyright (C) 1999, 2000
5   Andreas Gruenbacher <a.gruenbacher@bestbits.at>
6
7   This program is free software; you can redistribute it and/or
8   modify it under the terms of the GNU Lesser General Public
9   License as published by the Free Software Foundation; either
10   version 2.1 of the License, or (at your option) any later version.
11
12   This program is distributed in the hope that it will be useful,
13   but WITHOUT ANY WARRANTY; without even the implied warranty of
14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15   Lesser General Public License for more details.
16
17   You should have received a copy of the GNU Lesser General Public
18   License along with this library; if not, write to the Free Software
19   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 */
21
22 #include "libacl.h"
23
24
25 void
26 __acl_free_acl_obj(acl_obj *acl_obj_p)
27 {
28         acl_entry_obj *entry_obj_p;
29         while (acl_obj_p->anext != (acl_entry_obj *)acl_obj_p) {
30                 entry_obj_p = acl_obj_p->anext;
31                 acl_obj_p->anext = acl_obj_p->anext->enext;
32                 free_obj_p(entry_obj_p);
33         }
34         free(acl_obj_p->aprealloc);
35         free_obj_p(acl_obj_p);
36 }
37
38
39 /* 23.4.12 */
40 int
41 acl_free(void *obj_p)
42 {
43         obj_prefix *int_p = ((obj_prefix *)obj_p)-1;
44         if (!obj_p || !int_p) {
45                 errno = EINVAL;
46                 return -1;
47         }
48
49
50         switch(int_p->p_magic) {
51                 case acl_MAGIC:
52                         __acl_free_acl_obj((acl_obj *)int_p);
53                         return 0;
54                 case qualifier_MAGIC:
55                 case string_MAGIC:
56                         free_obj_p(int_p);
57                         return 0;
58                 case acl_entry_MAGIC:
59                 case acl_permset_MAGIC:
60 #ifdef LIBACL_DEBUG
61                         fprintf(stderr, "object (magic=0x%X) "
62                                 "at %p cannot be freed\n",
63                                 int_p->p_magic, int_p);
64 #endif
65                         break;
66                 default:
67 #ifdef LIBACL_DEBUG
68                         fprintf(stderr, "invalid object (magic=0x%X) "
69                                 "at %p\n", int_p->p_magic, int_p);
70 #endif
71                         break;
72         }
73         errno = EINVAL;
74         return -1;
75 }
76