xref: /titanic_44/usr/src/lib/libbc/libc/sys/common/lseek.c (revision d4188195113bc7f546b026033c66ea3e12de0e02)
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*d4188195Sraf  * Common Development and Distribution License (the "License").
6*d4188195Sraf  * 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*d4188195Sraf 
227c478bd9Sstevel@tonic-gate /*
23*d4188195Sraf  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
24*d4188195Sraf  * Use is subject to license terms.
257c478bd9Sstevel@tonic-gate  */
267c478bd9Sstevel@tonic-gate 
277c478bd9Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
287c478bd9Sstevel@tonic-gate 
297c478bd9Sstevel@tonic-gate #include "compat.h"
307c478bd9Sstevel@tonic-gate #include <errno.h>
31*d4188195Sraf #include <sys/syscall.h>
327c478bd9Sstevel@tonic-gate #include <sys/types.h>
337c478bd9Sstevel@tonic-gate #include <unistd.h>
347c478bd9Sstevel@tonic-gate 
35*d4188195Sraf off_t
lseek(int fd,off_t offset,int whence)36*d4188195Sraf lseek(int fd, off_t offset, int whence)
377c478bd9Sstevel@tonic-gate {
387c478bd9Sstevel@tonic-gate 	int off, ret;
397c478bd9Sstevel@tonic-gate 
407c478bd9Sstevel@tonic-gate 	if (whence < 0 || whence > 2) {
417c478bd9Sstevel@tonic-gate 		errno = EINVAL;
427c478bd9Sstevel@tonic-gate 		return (-1);
437c478bd9Sstevel@tonic-gate 	}
447c478bd9Sstevel@tonic-gate 	if (fd_get(fd) != -1) {
45*d4188195Sraf 		off = getmodsize(offset, sizeof (struct compat_utmp),
467c478bd9Sstevel@tonic-gate 		    sizeof (struct utmpx));
47*d4188195Sraf 		if ((ret = _syscall(SYS_lseek, fd, off, whence)) != -1)
48*d4188195Sraf 			ret = getmodsize(ret, sizeof (struct utmpx),
49*d4188195Sraf 			    sizeof (struct compat_utmp));
507c478bd9Sstevel@tonic-gate 		return (ret);
51*d4188195Sraf 	} else {
527c478bd9Sstevel@tonic-gate 		return (_syscall(SYS_lseek, fd, offset, whence));
537c478bd9Sstevel@tonic-gate 	}
54*d4188195Sraf }
55