1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
/*-
* Copyright (c) 2015 Jilles Tjoelker
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <time.h>
#ifndef UTIME_NOW
#define UTIME_NOW -1
#define UTIME_OMIT -2
#endif
int
utimensat(int fd, const char *path, const struct timespec times[2], int flag)
{
struct timeval now, tv[2], *tvp;
struct stat sb;
int osreldate;
if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0) {
errno = EINVAL;
return (-1);
}
if (times == NULL || (times[0].tv_nsec == UTIME_NOW &&
times[1].tv_nsec == UTIME_NOW))
tvp = NULL;
else if (times[0].tv_nsec == UTIME_OMIT &&
times[1].tv_nsec == UTIME_OMIT)
return (0);
else {
if ((times[0].tv_nsec < 0 || times[0].tv_nsec > 999999999) &&
times[0].tv_nsec != UTIME_NOW &&
times[0].tv_nsec != UTIME_OMIT) {
errno = EINVAL;
return (-1);
}
if ((times[1].tv_nsec < 0 || times[1].tv_nsec > 999999999) &&
times[1].tv_nsec != UTIME_NOW &&
times[1].tv_nsec != UTIME_OMIT) {
errno = EINVAL;
return (-1);
}
tv[0].tv_sec = times[0].tv_sec;
tv[0].tv_usec = times[0].tv_nsec / 1000;
tv[1].tv_sec = times[1].tv_sec;
tv[1].tv_usec = times[1].tv_nsec / 1000;
tvp = tv;
if (times[0].tv_nsec == UTIME_OMIT ||
times[1].tv_nsec == UTIME_OMIT) {
if (fstatat(fd, path, &sb, flag) == -1)
return (-1);
if (times[0].tv_nsec == UTIME_OMIT) {
tv[0].tv_sec = sb.st_atim.tv_sec;
tv[0].tv_usec = sb.st_atim.tv_nsec / 1000;
}
if (times[1].tv_nsec == UTIME_OMIT) {
tv[1].tv_sec = sb.st_mtim.tv_sec;
tv[1].tv_usec = sb.st_mtim.tv_nsec / 1000;
}
}
if (times[0].tv_nsec == UTIME_NOW ||
times[1].tv_nsec == UTIME_NOW) {
if (gettimeofday(&now, NULL) == -1)
return (-1);
if (times[0].tv_nsec == UTIME_NOW)
tv[0] = now;
if (times[1].tv_nsec == UTIME_NOW)
tv[1] = now;
}
}
if ((flag & AT_SYMLINK_NOFOLLOW) == 0)
return (futimesat(fd, path, tvp));
else if ((flag & AT_SYMLINK_NOFOLLOW) != 0 &&
(fd == AT_FDCWD || path[0] == '/'))
return (lutimes(path, tvp));
else {
errno = ENOTSUP;
return (-1);
}
}
|
