1 /*
2 * Copyright (c) 2001 Dima Dorfman.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: src/lib/libc/gen/getpeereid.c,v 1.4.2.2 2002/12/23 10:25:36 maxim Exp $
27 */
28
29 #include "namespace.h"
30 #include <sys/param.h>
31 #include <sys/socket.h>
32 #include <sys/ucred.h>
33 #include <sys/un.h>
34
35 #include <errno.h>
36 #include <unistd.h>
37 #include "un-namespace.h"
38
39 int
getpeereid(int s,uid_t * euid,gid_t * egid)40 getpeereid(int s, uid_t *euid, gid_t *egid)
41 {
42 struct xucred xuc;
43 socklen_t xuclen;
44 int error;
45
46 xuclen = sizeof(xuc);
47 error = _getsockopt(s, 0, LOCAL_PEERCRED, &xuc, &xuclen);
48 if (error != 0)
49 return (error);
50 if (xuc.cr_version != XUCRED_VERSION)
51 return (EINVAL);
52 *euid = xuc.cr_uid;
53 *egid = xuc.cr_gid;
54 return (0);
55 }
56