1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #pragma weak _getpeerucred = getpeerucred
28 
29 #include "lint.h"
30 
31 #include <sys/types.h>
32 #include <sys/syscall.h>
33 #include <ucred.h>
34 #include <sys/ucred.h>
35 
36 int
getpeerucred(int fd,ucred_t ** ucp)37 getpeerucred(int fd, ucred_t **ucp)
38 {
39 	ucred_t *uc = *ucp;
40 
41 	if (uc == NULL) {
42 		uc = _ucred_alloc();
43 		if (uc == NULL)
44 			return (-1);
45 	}
46 
47 	if (syscall(SYS_ucredsys, UCREDSYS_GETPEERUCRED, fd, uc) != 0) {
48 		if (*ucp == NULL)
49 			ucred_free(uc);
50 		return (-1);
51 	}
52 	*ucp = uc;
53 	return (0);
54 }
55