1/*-
2 * Copyright (c) 2011 Joseph Koshy
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/types.h>
28
29#include "libelftc.h"
30
31#include "_libelftc.h"
32
33ELFTC_VCSID("$Id$");
34
35/*
36 * Determine the field name for the timestamp fields inside a 'struct
37 * stat'.
38 */
39
40#if	defined(__FreeBSD__) || defined(__NetBSD__) || defined(__APPLE__)
41#define	ATIME	st_atimespec
42#define	MTIME	st_mtimespec
43#define	LIBELFTC_HAVE_UTIMES	1
44#endif
45
46#if	defined(__DragonFly__) || defined(__linux__) || defined(__OpenBSD__)
47#define	ATIME	st_atim
48#define	MTIME	st_mtim
49#define	LIBELFTC_HAVE_UTIMES	1
50#endif
51
52#if	LIBELFTC_HAVE_UTIMES
53#include <sys/time.h>
54#else
55#include <utime.h>
56#endif
57
58int
59elftc_set_timestamps(const char *fn, struct stat *sb)
60{
61#if	LIBELFTC_HAVE_UTIMES
62	/*
63	 * The BSD utimes() system call offers timestamps
64	 * 1-microsecond granularity.
65	 */
66	struct timeval tv[2];
67
68	tv[0].tv_sec = sb->ATIME.tv_sec;
69	tv[0].tv_usec = sb->ATIME.tv_nsec / 1000;
70	tv[1].tv_sec = sb->MTIME.tv_sec;
71	tv[1].tv_usec = sb->MTIME.tv_nsec / 1000;
72
73	return (utimes(fn, tv));
74#else
75	/*
76	 * On OSes without utimes(), fall back to the POSIX utime()
77	 * call, which offers 1-second granularity.
78	 */
79	struct utimbuf utb;
80
81	utb.actime = sb->st_atime;
82	utb.modtime = sb->st_mtime;
83	return (utime(fn, &utb));
84#endif
85}
86