xref: /illumos-gate/usr/src/ucblib/libucb/port/gen/times.c (revision d2ec54f7875f7e05edd56195adbeb593c947763f)
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, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
28 /*	  All Rights Reserved  	*/
29 
30 /*
31  * University Copyright- Copyright (c) 1982, 1986, 1988
32  * The Regents of the University of California
33  * All Rights Reserved
34  *
35  * University Acknowledgment- Portions of this document are derived from
36  * software developed by the University of California, Berkeley, and its
37  * contributors.
38  */
39 
40 #pragma ident	"%Z%%M%	%I%	%E% SMI"
41 
42 /*LINTLIBRARY*/
43 
44 #include <sys/types.h>
45 #include <errno.h>
46 #include <sys/time.h>
47 #include <sys/times.h>
48 #include "libc.h"
49 
50 /*
51  * Backwards compatible times.
52  * BSD times() returns 0 if successful, vs sys5's times()
53  * whih returns the elapsed real times in ticks.
54  */
55 
56 /*
57  * This is defined in sys/_times.s
58  * This extern cannot be in libc.h due to name conflict with synonyms.h
59  */
60 extern int _times(struct tms *);
61 
62 clock_t
63 times(struct tms *tmsp)
64 {
65 	int	error;
66 
67 	errno = 0;
68 	if (!tmsp) {
69 		errno = EFAULT;
70 		return (-1);
71 	}
72 
73 	error = _times(tmsp);
74 	return (error == -1 ? error : 0);
75 }
76