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>
134 lines
2.8 KiB
C
134 lines
2.8 KiB
C
/* Time bounds setting test
|
|
* by: john stultz (johnstul@us.ibm.com)
|
|
* (C) Copyright IBM 2012
|
|
* Licensed under the GPLv2
|
|
*
|
|
* NOTE: This is a meta-test which sets the time to edge cases then
|
|
* uses other tests to detect problems. Thus this test requires that
|
|
* the inconsistency-check and nanosleep tests be present in the same
|
|
* directory it is run from.
|
|
*
|
|
* To build:
|
|
* $ gcc set-2038.c -o set-2038 -lrt
|
|
*
|
|
* 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 <unistd.h>
|
|
#include <time.h>
|
|
#include <sys/time.h>
|
|
#include "../kselftest.h"
|
|
|
|
#define NSEC_PER_SEC 1000000000LL
|
|
|
|
#define KTIME_MAX ((long long)~((unsigned long long)1 << 63))
|
|
#define KTIME_SEC_MAX (KTIME_MAX / NSEC_PER_SEC)
|
|
|
|
#define YEAR_1901 (-0x7fffffffL)
|
|
#define YEAR_1970 1
|
|
#define YEAR_2038 0x7fffffffL /*overflows 32bit time_t */
|
|
#define YEAR_2262 KTIME_SEC_MAX /*overflows 64bit ktime_t */
|
|
#define YEAR_MAX ((long long)((1ULL<<63)-1)) /*overflows 64bit time_t */
|
|
|
|
int is32bits(void)
|
|
{
|
|
return (sizeof(long) == 4);
|
|
}
|
|
|
|
int settime(long long time)
|
|
{
|
|
struct timeval now;
|
|
int ret;
|
|
|
|
now.tv_sec = (time_t)time;
|
|
now.tv_usec = 0;
|
|
|
|
ret = settimeofday(&now, NULL);
|
|
|
|
printf("Setting time to 0x%lx: %d\n", (long)time, ret);
|
|
return ret;
|
|
}
|
|
|
|
int do_tests(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = system("date");
|
|
ret = system("./inconsistency-check -c 0 -t 20");
|
|
ret |= system("./nanosleep");
|
|
ret |= system("./nsleep-lat");
|
|
return ret;
|
|
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
int ret = 0;
|
|
int opt, dangerous = 0;
|
|
time_t start;
|
|
|
|
/* Process arguments */
|
|
while ((opt = getopt(argc, argv, "d")) != -1) {
|
|
switch (opt) {
|
|
case 'd':
|
|
dangerous = 1;
|
|
}
|
|
}
|
|
|
|
start = time(0);
|
|
|
|
/* First test that crazy values don't work */
|
|
if (!settime(YEAR_1901)) {
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
if (!settime(YEAR_MAX)) {
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
if (!is32bits() && !settime(YEAR_2262)) {
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
|
|
/* Now test behavior near edges */
|
|
settime(YEAR_1970);
|
|
ret = do_tests();
|
|
if (ret)
|
|
goto out;
|
|
|
|
settime(YEAR_2038 - 600);
|
|
ret = do_tests();
|
|
if (ret)
|
|
goto out;
|
|
|
|
/* The rest of the tests can blowup on 32bit systems */
|
|
if (is32bits() && !dangerous)
|
|
goto out;
|
|
/* Test rollover behavior 32bit edge */
|
|
settime(YEAR_2038 - 10);
|
|
ret = do_tests();
|
|
if (ret)
|
|
goto out;
|
|
|
|
settime(YEAR_2262 - 600);
|
|
ret = do_tests();
|
|
|
|
out:
|
|
/* restore clock */
|
|
settime(start);
|
|
if (ret)
|
|
ksft_exit_fail();
|
|
ksft_exit_pass();
|
|
}
|