1 /*
2 * Copyright (C) 2013 The Android Open Source Project
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 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the
13 * distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #ifndef _BIONIC_TIME_CONVERSIONS_H
30 #define _BIONIC_TIME_CONVERSIONS_H
31
32 #include <errno.h>
33 #include <time.h>
34 #include <sys/cdefs.h>
35
36 #include "private/bionic_constants.h"
37
38 __BEGIN_DECLS
39
40 __LIBC_HIDDEN__ bool timespec_from_timeval(timespec& ts, const timeval& tv);
41 __LIBC_HIDDEN__ void timespec_from_ms(timespec& ts, const int ms);
42
43 __LIBC_HIDDEN__ void timeval_from_timespec(timeval& tv, const timespec& ts);
44
45 __LIBC_HIDDEN__ void absolute_timespec_from_timespec(timespec& abs_ts, const timespec& ts,
46 clockid_t clock);
47
48 __END_DECLS
49
check_timespec(const timespec * ts,bool null_allowed)50 static inline int check_timespec(const timespec* ts, bool null_allowed) {
51 if (null_allowed && ts == nullptr) {
52 return 0;
53 }
54 // glibc just segfaults if you pass a null timespec.
55 // That seems a lot more likely to catch bad code than returning EINVAL.
56 if (ts->tv_nsec < 0 || ts->tv_nsec >= NS_PER_S) {
57 return EINVAL;
58 }
59 if (ts->tv_sec < 0) {
60 return ETIMEDOUT;
61 }
62 return 0;
63 }
64
65 #endif
66