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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. */ |
25 | int |
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 | } |
65 | libc_hidden_def (__gettimeofday) |
66 | weak_alias (__gettimeofday, gettimeofday) |
67 | libc_hidden_weak (gettimeofday) |
68 |
Warning: That file was not part of the compilation database. It may have many parsing errors.