xref: /onnv-gate/usr/src/lib/libbc/libc/sys/common/lseek.c (revision 3224:c0c9287a0eec)
10Sstevel@tonic-gate /*
20Sstevel@tonic-gate  * CDDL HEADER START
30Sstevel@tonic-gate  *
40Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*3224Sraf  * Common Development and Distribution License (the "License").
6*3224Sraf  * You may not use this file except in compliance with the License.
70Sstevel@tonic-gate  *
80Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
90Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
100Sstevel@tonic-gate  * See the License for the specific language governing permissions
110Sstevel@tonic-gate  * and limitations under the License.
120Sstevel@tonic-gate  *
130Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
140Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
150Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
160Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
170Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
180Sstevel@tonic-gate  *
190Sstevel@tonic-gate  * CDDL HEADER END
200Sstevel@tonic-gate  */
21*3224Sraf 
220Sstevel@tonic-gate /*
23*3224Sraf  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
24*3224Sraf  * Use is subject to license terms.
250Sstevel@tonic-gate  */
260Sstevel@tonic-gate 
270Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
280Sstevel@tonic-gate 
290Sstevel@tonic-gate #include "compat.h"
300Sstevel@tonic-gate #include <errno.h>
31*3224Sraf #include <sys/syscall.h>
320Sstevel@tonic-gate #include <sys/types.h>
330Sstevel@tonic-gate #include <unistd.h>
340Sstevel@tonic-gate 
35*3224Sraf off_t
lseek(int fd,off_t offset,int whence)36*3224Sraf lseek(int fd, off_t offset, int whence)
370Sstevel@tonic-gate {
380Sstevel@tonic-gate 	int off, ret;
390Sstevel@tonic-gate 
400Sstevel@tonic-gate 	if (whence < 0 || whence > 2) {
410Sstevel@tonic-gate 		errno = EINVAL;
420Sstevel@tonic-gate 		return (-1);
430Sstevel@tonic-gate 	}
440Sstevel@tonic-gate 	if (fd_get(fd) != -1) {
45*3224Sraf 		off = getmodsize(offset, sizeof (struct compat_utmp),
46*3224Sraf 		    sizeof (struct utmpx));
47*3224Sraf 		if ((ret = _syscall(SYS_lseek, fd, off, whence)) != -1)
48*3224Sraf 			ret = getmodsize(ret, sizeof (struct utmpx),
49*3224Sraf 			    sizeof (struct compat_utmp));
500Sstevel@tonic-gate 		return (ret);
51*3224Sraf 	} else {
52*3224Sraf 		return (_syscall(SYS_lseek, fd, offset, whence));
530Sstevel@tonic-gate 	}
540Sstevel@tonic-gate }
55