1 /* $NetBSD: getpeereid.c,v 1.5 2017/04/18 18:41:46 christos Exp $ */
2
3 /*
4 * Copyright (c) 2002 Damien Miller. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #include "includes.h"
28 #include "getpeereid.h"
29 #include <unistd.h>
30
31 __RCSID("$NetBSD: getpeereid.c,v 1.5 2017/04/18 18:41:46 christos Exp $");
32
33 #if defined(SO_PEERCRED)
34 int
getpeereid(int s,uid_t * euid,gid_t * gid)35 getpeereid(int s, uid_t *euid, gid_t *gid)
36 {
37 struct ucred cred;
38 socklen_t len = sizeof(cred);
39
40 if (getsockopt(s, SOL_SOCKET, SO_PEERCRED, &cred, &len) < 0)
41 return (-1);
42 *euid = cred.uid;
43 *gid = cred.gid;
44
45 return (0);
46 }
47 #else
48 int
getpeereid(int s,uid_t * euid,gid_t * gid)49 getpeereid(int s, uid_t *euid, gid_t *gid)
50 {
51 *euid = geteuid();
52 *gid = getgid();
53
54 return (0);
55 }
56 #endif /* defined(SO_PEERCRED) */
57