xref: /freebsd/contrib/atf/atf-c/detail/user.c (revision cfd6422a5217410fbd66f7a7a8a64d9d85e61229)
1 /* Copyright (c) 2007 The NetBSD Foundation, Inc.
2  * All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
14  * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
15  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
16  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17  * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
18  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
20  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
21  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
22  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
23  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
24  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  */
25 
26 #include "atf-c/detail/user.h"
27 
28 #include <sys/param.h>
29 #include <sys/types.h>
30 #include <limits.h>
31 #include <unistd.h>
32 
33 #include "atf-c/detail/sanity.h"
34 
35 /* ---------------------------------------------------------------------
36  * Free functions.
37  * --------------------------------------------------------------------- */
38 
39 uid_t
40 atf_user_euid(void)
41 {
42     return geteuid();
43 }
44 
45 bool
46 atf_user_is_member_of_group(gid_t gid)
47 {
48     static gid_t groups[NGROUPS_MAX];
49     static int ngroups = -1;
50     bool found;
51     int i;
52 
53     if (ngroups == -1) {
54         ngroups = getgroups(NGROUPS_MAX, groups);
55         INV(ngroups >= 0);
56     }
57 
58     found = false;
59     for (i = 0; !found && i < ngroups; i++)
60         if (groups[i] == gid)
61             found = true;
62     return found;
63 }
64 
65 bool
66 atf_user_is_root(void)
67 {
68     return geteuid() == 0;
69 }
70 
71 bool
72 atf_user_is_unprivileged(void)
73 {
74     return geteuid() != 0;
75 }
76