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
109
110
111
112
113
114
115
116
117
|
/*-
* Copyright (c) 2001 FreeBSD Inc.
* 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.
*
* These routines are for converting time_t to fixed-bit representations
* for use in protocols or storage. When converting time to a larger
* representation of time_t these routines are expected to assume temporal
* locality and use the 50-year rule to properly set the msb bits. XXX
*
*/
#include <sys/cdefs.h>
#include <sys/types.h>
#include <timeconv.h>
/*
* Convert a 32 bit representation of time_t into time_t. XXX needs to
* implement the 50-year rule to handle post-2038 conversions.
*/
time_t
_time32_to_time(int32_t t32)
{
return((time_t)t32);
}
/*
* Convert time_t to a 32 bit representation. If time_t is 64 bits we can
* simply chop it down. The resulting 32 bit representation can be
* converted back to a temporally local 64 bit time_t using time32_to_time.
*/
int32_t
_time_to_time32(time_t t)
{
return((int32_t)t);
}
/*
* Convert a 64 bit representation of time_t into time_t. If time_t is
* represented as 32 bits we can simply chop it and not support times
* past 2038.
*/
time_t
_time64_to_time(int64_t t64)
{
return((time_t)t64);
}
/*
* Convert time_t to a 64 bit representation. If time_t is represented
* as 32 bits we simply sign-extend and do not support times past 2038.
*/
int64_t
_time_to_time64(time_t t)
{
return((int64_t)t);
}
/*
* Convert to/from 'long'. Depending on the sizeof(long) this may or
* may not require using the 50-year rule.
*/
long
_time_to_long(time_t t)
{
if (sizeof(long) == sizeof(int64_t))
return(_time_to_time64(t));
return((long)t);
}
time_t
_long_to_time(long tlong)
{
if (sizeof(long) == sizeof(int32_t))
return(_time32_to_time(tlong));
return((time_t)tlong);
}
/*
* Convert to/from 'int'. Depending on the sizeof(int) this may or
* may not require using the 50-year rule.
*/
int
_time_to_int(time_t t)
{
if (sizeof(int) == sizeof(int64_t))
return(_time_to_time64(t));
return((int)t);
}
time_t
_int_to_time(int tint)
{
if (sizeof(int) == sizeof(int32_t))
return(_time32_to_time(tint));
return((time_t)tint);
}
|
