libc/net/getpeereid.c

1.1  he /* $NetBSD: getpeereid.c,v 1.1 2007/08/09 15:23:02 he Exp $ */
1.1  he
1.1  he /*-
1.1  he  * Copyright (c) 2007 The NetBSD Foundation, Inc.
1.1  he  * All rights reserved.
1.1  he  *
1.1  he  * This code is derived from software contributed to The NetBSD Foundation
1.1  he  * by Arne H. Juul.
1.1  he  *
1.1  he  * Redistribution and use in source and binary forms, with or without
1.1  he  * modification, are permitted provided that the following conditions
1.1  he  * are met:
1.1  he  * 1. Redistributions of source code must retain the above copyright
1.1  he  *    notice, this list of conditions and the following disclaimer.
1.1  he  * 2. Redistributions in binary form must reproduce the above copyright
1.1  he  *    notice, this list of conditions and the following disclaimer in the
1.1  he  *    documentation and/or other materials provided with the distribution.
1.1  he  * 3. Neither the name of The NetBSD Foundation nor the names of its
1.1  he  *    contributors may be used to endorse or promote products derived
1.1  he  *    from this software without specific prior written permission.
1.1  he  *
1.1  he  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
1.1  he  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
1.1  he  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
1.1  he  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
1.1  he  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
1.1  he  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
1.1  he  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
1.1  he  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
1.1  he  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
1.1  he  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1.1  he  * POSSIBILITY OF SUCH DAMAGE.
1.1  he  */
1.1  he
1.1  he #include <sys/cdefs.h>
1.1  he #if defined(LIBC_SCCS) && !defined(lint)
1.1  he __RCSID("$NetBSD: getpeereid.c,v 1.1 2007/08/09 15:23:02 he Exp $");
1.1  he #endif /* LIBC_SCCS and not lint */
1.1  he
1.1  he #include <sys/types.h>
1.1  he #include <unistd.h>
1.1  he #include <sys/un.h>
1.1  he #include <sys/socket.h>
1.1  he
1.1  he
1.1  he int
1.1  he getpeereid(int s, uid_t *euid, gid_t *egid)
1.1  he {
1.1  he 	struct unpcbid cred;
1.1  he 	socklen_t len = sizeof(cred);
1.1  he 	if (getsockopt(s, 0, LOCAL_PEEREID, &cred, &len) < 0) {
1.1  he 		return -1;
1.1  he 	} else {
1.1  he 		if (euid != NULL)
1.1  he 			*euid = cred.unp_euid;
1.1  he 		if (egid != NULL)
1.1  he 			*egid = cred.unp_egid;
1.1  he 		return 0;
1.1  he 	}
1.1  he }