xref: /freebsd/sys/contrib/openzfs/lib/libspl/timestamp.c (revision 43a5ec4eb41567cc92586503212743d89686d78f)
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  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #include <stdio.h>
27 #include <time.h>
28 #include <langinfo.h>
29 #include "statcommon.h"
30 
31 #ifndef _DATE_FMT
32 #ifdef D_T_FMT
33 #define	_DATE_FMT D_T_FMT
34 #else /* D_T_FMT */
35 #define	_DATE_FMT "%+"
36 #endif /* !D_T_FMT */
37 #endif /* _DATE_FMT */
38 
39 /*
40  * Print timestamp as decimal reprentation of time_t value (-T u was specified)
41  * or in date(1) format (-T d was specified).
42  */
43 void
44 print_timestamp(uint_t timestamp_fmt)
45 {
46 	time_t t = time(NULL);
47 	static char *fmt = NULL;
48 
49 	/* We only need to retrieve this once per invocation */
50 	if (fmt == NULL)
51 		fmt = nl_langinfo(_DATE_FMT);
52 
53 	if (timestamp_fmt == UDATE) {
54 		(void) printf("%lld\n", (longlong_t)t);
55 	} else if (timestamp_fmt == DDATE) {
56 		char dstr[64];
57 		int len;
58 
59 		len = strftime(dstr, sizeof (dstr), fmt, localtime(&t));
60 		if (len > 0)
61 			(void) printf("%s\n", dstr);
62 	}
63 }
64