]>
Commit | Line | Data |
---|---|---|
f4b47811 LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2011 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <assert.h> | |
23 | #include <sys/acl.h> | |
24 | #include <acl/libacl.h> | |
25 | #include <errno.h> | |
26 | #include <stdbool.h> | |
27 | ||
28 | #include "acl-util.h" | |
29 | ||
30 | int acl_find_uid(acl_t acl, uid_t uid, acl_entry_t *entry) { | |
31 | acl_entry_t i; | |
32 | int found; | |
33 | ||
34 | assert(acl); | |
35 | assert(entry); | |
36 | ||
37 | for (found = acl_get_entry(acl, ACL_FIRST_ENTRY, &i); | |
38 | found > 0; | |
39 | found = acl_get_entry(acl, ACL_NEXT_ENTRY, &i)) { | |
40 | ||
41 | acl_tag_t tag; | |
42 | uid_t *u; | |
43 | bool b; | |
44 | ||
45 | if (acl_get_tag_type(i, &tag) < 0) | |
46 | return -errno; | |
47 | ||
48 | if (tag != ACL_USER) | |
49 | continue; | |
50 | ||
51 | u = acl_get_qualifier(i); | |
52 | if (!u) | |
53 | return -errno; | |
54 | ||
55 | b = *u == uid; | |
56 | acl_free(u); | |
57 | ||
58 | if (b) { | |
59 | *entry = i; | |
60 | return 1; | |
61 | } | |
62 | } | |
63 | ||
64 | if (found < 0) | |
65 | return -errno; | |
66 | ||
67 | return 0; | |
68 | } |