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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright (c) 2014 Gary Mills
24 *
25 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
26 * Use is subject to license terms.
27 */
28
29/*	Copyright (c) 1988 AT&T	*/
30/*	  All Rights Reserved  	*/
31
32/*
33 * This routine converts time as follows.  The epoch is 0000  Jan  1
34 * 1970  GMT.   The  argument  time  is  in seconds since then.  The
35 * localtime(t) entry returns a pointer to an array containing:
36 *
37 *		  seconds (0-59)
38 *		  minutes (0-59)
39 *		  hours (0-23)
40 *		  day of month (1-31)
41 *		  month (0-11)
42 *		  year
43 *		  weekday (0-6, Sun is 0)
44 *		  day of the year
45 *		  daylight savings flag
46 *
47 * The routine corrects for daylight saving time and  will  work  in
48 * any  time  zone provided "timezone" is adjusted to the difference
49 * between Greenwich and local standard time (measured in seconds).
50 *
51 *	 ascftime(buf, format, t)	-> where t is produced by localtime
52 *				           and returns a ptr to a character
53 *				           string that has the ascii time in
54 *				           the format specified by the format
55 *				           argument (see date(1) for format
56 *				           syntax).
57 *
58 *	 cftime(buf, format, t) 	-> just calls ascftime.
59 *
60 *
61 *
62 */
63
64#include	"lint.h"
65#include	<mtlib.h>
66#include	<stddef.h>
67#include	<time.h>
68#include	<limits.h>
69#include	<stdlib.h>
70#include	<thread.h>
71#include	<synch.h>
72
73int
74cftime(char *buf, char *format, const time_t *t)
75{
76	struct tm res;
77	struct tm *p;
78
79	p = localtime_r(t, &res);
80	if (p == NULL) {
81		*buf = '\0';
82		return (0);
83	}
84	/* LINTED do not use ascftime() */
85	return (ascftime(buf, format, p));
86}
87
88int
89ascftime(char *buf, const char *format, const struct tm *tm)
90{
91	/* Set format string, if not already set */
92	if (format == NULL || *format == '\0')
93		if (((format = getenv("CFTIME")) == 0) || *format == 0)
94			format =  "%+";
95
96	return ((int)strftime(buf, LONG_MAX, format, tm));
97}
98