The goal of this test is to check if a RTC device correctly support dates after years 2038 or 2106. It set a date (1-1-2200) on RTC and read it back to be sure that the driver is working well. The same thing is done on alarm.
Signed-off-by: Benjamin Gaignard benjamin.gaignard@linaro.org --- tools/testing/selftests/timers/Makefile | 4 +- tools/testing/selftests/timers/rtctest-2038.c | 135 ++++++++++++++++++++++++++ 2 files changed, 138 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/timers/rtctest-2038.c
diff --git a/tools/testing/selftests/timers/Makefile b/tools/testing/selftests/timers/Makefile index 54481f1..7791f79 100644 --- a/tools/testing/selftests/timers/Makefile +++ b/tools/testing/selftests/timers/Makefile @@ -9,7 +9,8 @@ TEST_GEN_PROGS = posix_timers nanosleep nsleep-lat set-timer-lat mqueue-lat \
TEST_GEN_PROGS_EXTENDED = alarmtimer-suspend valid-adjtimex adjtick change_skew \ skew_consistency clocksource-switch leap-a-day \ - leapcrash set-tai set-2038 set-tz rtctest_setdate + leapcrash set-tai set-2038 set-tz rtctest_setdate \ + rtctest-2038
include ../lib.mk @@ -29,4 +30,5 @@ run_destructive_tests: run_tests ./set-tz ./set-tai ./set-2038 + ./rtctest-2038
diff --git a/tools/testing/selftests/timers/rtctest-2038.c b/tools/testing/selftests/timers/rtctest-2038.c new file mode 100644 index 0000000..213b7ee --- /dev/null +++ b/tools/testing/selftests/timers/rtctest-2038.c @@ -0,0 +1,135 @@ +/* Real Time Clock Driver Test + * by: Benjamin Gaignard (benjamin.gaignard@linaro.org) + * + * To build + * gcc rtctest-2038.c -o rtctest-2038 + * + * 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 <linux/rtc.h> +#include <sys/ioctl.h> +#include <sys/time.h> +#include <sys/types.h> +#include <fcntl.h> +#include <unistd.h> +#include <stdlib.h> +#include <errno.h> + +static const char default_rtc[] = "/dev/rtc0"; + +int main(int argc, char **argv) +{ + int fd, retval; + struct rtc_time new, current; + const char *rtc = default_rtc; + + switch (argc) { + case 2: + rtc = argv[1]; + /* FALLTHROUGH */ + case 1: + break; + default: + fprintf(stderr, "usage: rtctest-2038 [rtcdev]\n"); + return 1; + } + + fprintf(stderr, "\nTest if RTC is robust for date after y2038/2106\n\n"); + + fd = open(rtc, O_RDONLY); + if (fd == -1) { + perror(rtc); + exit(errno); + } + + new.tm_year = 300; /* 2200 - 1900 */ + new.tm_mon = 0; + new.tm_mday = 1; + new.tm_hour = 0; + new.tm_min = 0; + new.tm_sec = 0; + + fprintf(stderr, "Test will set RTC date/time to %d-%d-%d, %02d:%02d:%02d.\n", + new.tm_mday, new.tm_mon + 1, new.tm_year + 1900, + new.tm_hour, new.tm_min, new.tm_sec); + + /* Write the new date in RTC */ + retval = ioctl(fd, RTC_SET_TIME, &new); + if (retval == -1) { + perror("RTC_SET_TIME ioctl"); + close(fd); + exit(errno); + } + + /* Read back */ + retval = ioctl(fd, RTC_RD_TIME, ¤t); + if (retval == -1) { + perror("RTC_RD_TIME ioctl"); + exit(errno); + } + + fprintf(stderr, "RTC date/time is %d-%d-%d, %02d:%02d:%02d.\n", + current.tm_mday, current.tm_mon + 1, current.tm_year + 1900, + current.tm_hour, current.tm_min, current.tm_sec); + + if (new.tm_year != current.tm_year || + new.tm_mon != current.tm_mon || + new.tm_mday != current.tm_mday || + new.tm_hour != current.tm_hour || + new.tm_min != current.tm_min || + new.tm_sec != current.tm_sec) { + fprintf(stderr, "\n\nSet Time test failed\n"); + close(fd); + return 1; + } + + new.tm_sec += 5; + + fprintf(stderr, "\nTest will set RTC alarm to %d-%d-%d, %02d:%02d:%02d.\n", + new.tm_mday, new.tm_mon + 1, new.tm_year + 1900, + new.tm_hour, new.tm_min, new.tm_sec); + + /* Write the new alarm in RTC */ + retval = ioctl(fd, RTC_ALM_SET, &new); + if (retval == -1) { + perror("RTC_ALM_SET ioctl"); + close(fd); + exit(errno); + } + + /* Read back */ + retval = ioctl(fd, RTC_ALM_READ, ¤t); + if (retval == -1) { + perror("RTC_ALM_READ ioctl"); + exit(errno); + } + + fprintf(stderr, "RTC alarm is %d-%d-%d, %02d:%02d:%02d.\n", + current.tm_mday, current.tm_mon + 1, current.tm_year + 1900, + current.tm_hour, current.tm_min, current.tm_sec); + + if (new.tm_year != current.tm_year || + new.tm_mon != current.tm_mon || + new.tm_mday != current.tm_mday || + new.tm_hour != current.tm_hour || + new.tm_min != current.tm_min || + new.tm_sec != current.tm_sec) { + fprintf(stderr, "\n\nSet alarm test failed\n"); + close(fd); + return 1; + } + + fprintf(stderr, "\nTest complete\n"); + close(fd); + return 0; +}