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1/* Copyright (C) 1991-2019 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
17
18#include <errno.h>
19#include <time.h>
20#include <sys/time.h>
21
22/* Get the current time of day and timezone information,
23 putting it into *TV and *TZ. If TZ is NULL, *TZ is not filled.
24 Returns 0 on success, -1 on errors. */
25int
26__gettimeofday (struct timeval *tv, struct timezone *tz)
27{
28 if (tv == NULL)
29 {
30 __set_errno (EINVAL);
31 return -1;
32 }
33
34 tv->tv_sec = (long int) time ((time_t *) NULL);
35 tv->tv_usec = 0L;
36
37 if (tz != NULL)
38 {
39 const time_t timer = tv->tv_sec;
40 struct tm tm;
41 const struct tm *tmp;
42
43 const long int save_timezone = __timezone;
44 const long int save_daylight = __daylight;
45 char *save_tzname[2];
46 save_tzname[0] = __tzname[0];
47 save_tzname[1] = __tzname[1];
48
49 tmp = localtime_r (&timer, &tm);
50
51 tz->tz_minuteswest = __timezone / 60;
52 tz->tz_dsttime = __daylight;
53
54 __timezone = save_timezone;
55 __daylight = save_daylight;
56 __tzname[0] = save_tzname[0];
57 __tzname[1] = save_tzname[1];
58
59 if (tmp == NULL)
60 return -1;
61 }
62
63 return 0;
64}
65libc_hidden_def (__gettimeofday)
66weak_alias (__gettimeofday, gettimeofday)
67libc_hidden_weak (gettimeofday)
68

Warning: That file was not part of the compilation database. It may have many parsing errors.