1 /* $OpenBSD: getpeereid.c,v 1.1 2010/07/01 19:15:30 deraadt Exp $ */
2
3 /*
4 * Copyright (c) 2010 Theo de Raadt <deraadt@openbsd.org>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <sys/types.h>
20 #include <sys/socket.h>
21
22 int
getpeereid(int s,uid_t * euid,gid_t * egid)23 getpeereid(int s, uid_t *euid, gid_t *egid)
24 {
25 struct sockpeercred creds;
26 socklen_t credslen = sizeof(creds);
27 int error;
28
29 error = getsockopt(s, SOL_SOCKET, SO_PEERCRED,
30 &creds, &credslen);
31 if (error)
32 return (error);
33 *euid = creds.uid;
34 *egid = creds.gid;
35 return (0);
36 }
37