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
33 ELFTC_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
58 int
elftc_set_timestamps(const char * fn,struct stat * sb)59 elftc_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