selftests/timers: Add set-2038 test from timetest suite (0d02a753) · Commits · 戴 / test

tools/testing/selftests/timers/Makefile

+2 −1

Original line number	Diff line number	Diff line
		@@ -5,7 +5,7 @@ LDFLAGS += -lrt -lpthread
		bins = posix_timers nanosleep inconsistency-check nsleep-lat raw_skew \
		set-timer-lat threadtest mqueue-lat valid-adjtimex \
		alarmtimer-suspend change_skew skew_consistency clocksource-switch \
		leap-a-day leapcrash set-tai
		leap-a-day leapcrash set-tai set-2038

		all: ${bins}

		@@ -33,6 +33,7 @@ run_destructive_tests: run_tests
		./leap-a-day -s -i 10
		./leapcrash
		./set-tai
		./set-2038

		clean:
		rm -f ${bins}

tools/testing/selftests/timers/set-2038.c

0 → 100644

+144 −0

Original line number	Diff line number	Diff line
		/* 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>
		#ifdef KTEST
		#include "../kselftest.h"
		#else
		static inline int ksft_exit_pass(void)
		{
		exit(0);
		}
		static inline int ksft_exit_fail(void)
		{
		exit(1);
		}
		#endif

		#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)
		return ksft_exit_fail();
		return ksft_exit_pass();
		}

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