xref: /illumos-gate/usr/src/lib/libc/port/sys/getpeerucred.c (revision 1da57d551424de5a9d469760be7c4b4d4f10a755)
17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * CDDL HEADER START
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7257d1b4Sraf  * Common Development and Distribution License (the "License").
6*7257d1b4Sraf  * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate  *
87c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate  * and limitations under the License.
127c478bd9Sstevel@tonic-gate  *
137c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate  *
197c478bd9Sstevel@tonic-gate  * CDDL HEADER END
207c478bd9Sstevel@tonic-gate  */
21*7257d1b4Sraf 
227c478bd9Sstevel@tonic-gate /*
23*7257d1b4Sraf  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
247c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
257c478bd9Sstevel@tonic-gate  */
267c478bd9Sstevel@tonic-gate 
27*7257d1b4Sraf #pragma weak _getpeerucred = getpeerucred
287c478bd9Sstevel@tonic-gate 
29*7257d1b4Sraf #include "lint.h"
307c478bd9Sstevel@tonic-gate 
317c478bd9Sstevel@tonic-gate #include <sys/types.h>
327c478bd9Sstevel@tonic-gate #include <sys/syscall.h>
337c478bd9Sstevel@tonic-gate #include <ucred.h>
347c478bd9Sstevel@tonic-gate #include <sys/ucred.h>
357c478bd9Sstevel@tonic-gate 
367c478bd9Sstevel@tonic-gate int
getpeerucred(int fd,ucred_t ** ucp)377c478bd9Sstevel@tonic-gate getpeerucred(int fd, ucred_t **ucp)
387c478bd9Sstevel@tonic-gate {
397c478bd9Sstevel@tonic-gate 	ucred_t *uc = *ucp;
407c478bd9Sstevel@tonic-gate 
417c478bd9Sstevel@tonic-gate 	if (uc == NULL) {
427c478bd9Sstevel@tonic-gate 		uc = _ucred_alloc();
437c478bd9Sstevel@tonic-gate 		if (uc == NULL)
447c478bd9Sstevel@tonic-gate 			return (-1);
457c478bd9Sstevel@tonic-gate 	}
467c478bd9Sstevel@tonic-gate 
477c478bd9Sstevel@tonic-gate 	if (syscall(SYS_ucredsys, UCREDSYS_GETPEERUCRED, fd, uc) != 0) {
487c478bd9Sstevel@tonic-gate 		if (*ucp == NULL)
497c478bd9Sstevel@tonic-gate 			ucred_free(uc);
507c478bd9Sstevel@tonic-gate 		return (-1);
517c478bd9Sstevel@tonic-gate 	}
527c478bd9Sstevel@tonic-gate 	*ucp = uc;
537c478bd9Sstevel@tonic-gate 	return (0);
547c478bd9Sstevel@tonic-gate }
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