mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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bc7e5d23be
After commit f7d5bcd35d42 ("selftests: kselftest: Mark functions that
unconditionally call exit() as __noreturn"), ksft_exit_...() functions
are marked as __noreturn, which means the return type should not be
'int' but 'void' because they are not returning anything (and never were
since exit() has always been called).
To facilitate updating the return type of these functions, remove
'return' before the calls to ksft_exit_...(), as __noreturn prevents the
compiler from warning that a caller of the ksft_exit functions does not
return a value because the program will terminate upon calling these
functions.
Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
111 lines
2.3 KiB
C
111 lines
2.3 KiB
C
/* Set tz value
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* by: John Stultz <john.stultz@linaro.org>
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* (C) Copyright Linaro 2016
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* Licensed under the GPLv2
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <sys/time.h>
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#include <sys/timex.h>
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#include <string.h>
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#include <signal.h>
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#include <unistd.h>
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#include "../kselftest.h"
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int set_tz(int min, int dst)
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{
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struct timezone tz;
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tz.tz_minuteswest = min;
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tz.tz_dsttime = dst;
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return settimeofday(0, &tz);
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}
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int get_tz_min(void)
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{
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struct timezone tz;
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struct timeval tv;
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memset(&tz, 0, sizeof(tz));
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gettimeofday(&tv, &tz);
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return tz.tz_minuteswest;
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}
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int get_tz_dst(void)
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{
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struct timezone tz;
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struct timeval tv;
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memset(&tz, 0, sizeof(tz));
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gettimeofday(&tv, &tz);
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return tz.tz_dsttime;
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}
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int main(int argc, char **argv)
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{
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int i, ret;
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int min, dst;
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min = get_tz_min();
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dst = get_tz_dst();
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printf("tz_minuteswest started at %i, dst at %i\n", min, dst);
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printf("Checking tz_minuteswest can be properly set: ");
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fflush(stdout);
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for (i = -15*60; i < 15*60; i += 30) {
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ret = set_tz(i, dst);
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ret = get_tz_min();
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if (ret != i) {
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printf("[FAILED] expected: %i got %i\n", i, ret);
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goto err;
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}
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}
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printf("[OK]\n");
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printf("Checking invalid tz_minuteswest values are caught: ");
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fflush(stdout);
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if (!set_tz(-15*60-1, dst)) {
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printf("[FAILED] %i didn't return failure!\n", -15*60-1);
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goto err;
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}
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if (!set_tz(15*60+1, dst)) {
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printf("[FAILED] %i didn't return failure!\n", 15*60+1);
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goto err;
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}
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if (!set_tz(-24*60, dst)) {
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printf("[FAILED] %i didn't return failure!\n", -24*60);
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goto err;
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}
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if (!set_tz(24*60, dst)) {
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printf("[FAILED] %i didn't return failure!\n", 24*60);
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goto err;
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}
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printf("[OK]\n");
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set_tz(min, dst);
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ksft_exit_pass();
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err:
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set_tz(min, dst);
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ksft_exit_fail();
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}
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