forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
110 lines
2.3 KiB
110 lines
2.3 KiB
/* Set tz value |
|
* by: John Stultz <[email protected]> |
|
* (C) Copyright Linaro 2016 |
|
* Licensed under the GPLv2 |
|
* |
|
* This program is free software: you can redistribute it and/or modify |
|
* it under the terms of the GNU General Public License as published by |
|
* the Free Software Foundation, either version 2 of the License, or |
|
* (at your option) any later version. |
|
* |
|
* This program is distributed in the hope that it will be useful, |
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
* GNU General Public License for more details. |
|
*/ |
|
|
|
|
|
#include <stdio.h> |
|
#include <stdlib.h> |
|
#include <time.h> |
|
#include <sys/time.h> |
|
#include <sys/timex.h> |
|
#include <string.h> |
|
#include <signal.h> |
|
#include <unistd.h> |
|
#include "../kselftest.h" |
|
|
|
int set_tz(int min, int dst) |
|
{ |
|
struct timezone tz; |
|
|
|
tz.tz_minuteswest = min; |
|
tz.tz_dsttime = dst; |
|
|
|
return settimeofday(0, &tz); |
|
} |
|
|
|
int get_tz_min(void) |
|
{ |
|
struct timezone tz; |
|
struct timeval tv; |
|
|
|
memset(&tz, 0, sizeof(tz)); |
|
gettimeofday(&tv, &tz); |
|
return tz.tz_minuteswest; |
|
} |
|
|
|
int get_tz_dst(void) |
|
{ |
|
struct timezone tz; |
|
struct timeval tv; |
|
|
|
memset(&tz, 0, sizeof(tz)); |
|
gettimeofday(&tv, &tz); |
|
return tz.tz_dsttime; |
|
} |
|
|
|
int main(int argc, char **argv) |
|
{ |
|
int i, ret; |
|
int min, dst; |
|
|
|
min = get_tz_min(); |
|
dst = get_tz_dst(); |
|
printf("tz_minuteswest started at %i, dst at %i\n", min, dst); |
|
|
|
printf("Checking tz_minuteswest can be properly set: "); |
|
fflush(stdout); |
|
for (i = -15*60; i < 15*60; i += 30) { |
|
ret = set_tz(i, dst); |
|
ret = get_tz_min(); |
|
if (ret != i) { |
|
printf("[FAILED] expected: %i got %i\n", i, ret); |
|
goto err; |
|
} |
|
} |
|
printf("[OK]\n"); |
|
|
|
printf("Checking invalid tz_minuteswest values are caught: "); |
|
fflush(stdout); |
|
|
|
if (!set_tz(-15*60-1, dst)) { |
|
printf("[FAILED] %i didn't return failure!\n", -15*60-1); |
|
goto err; |
|
} |
|
|
|
if (!set_tz(15*60+1, dst)) { |
|
printf("[FAILED] %i didn't return failure!\n", 15*60+1); |
|
goto err; |
|
} |
|
|
|
if (!set_tz(-24*60, dst)) { |
|
printf("[FAILED] %i didn't return failure!\n", -24*60); |
|
goto err; |
|
} |
|
|
|
if (!set_tz(24*60, dst)) { |
|
printf("[FAILED] %i didn't return failure!\n", 24*60); |
|
goto err; |
|
} |
|
|
|
printf("[OK]\n"); |
|
|
|
set_tz(min, dst); |
|
return ksft_exit_pass(); |
|
|
|
err: |
|
set_tz(min, dst); |
|
return ksft_exit_fail(); |
|
}
|
|
|