From 8ea0140d5ffd2dc4ec0e36de71b67e6c1955f3cb Mon Sep 17 00:00:00 2001 From: Dmitry Chestnykh Date: Wed, 21 Feb 2024 19:08:28 +0300 Subject: Introduce time64 support. This patch introduces *time64 syscalls support for uClibc-ng. Currently the redirection of syscalls to their *time64 analogs is fully supported for 32bit ARM (ARMv5, ARMv6, ARMv7). The main changes that take effect when time64 feature is enabled are: - sizeof(time_t) is 8. - There is a possibility os setting date beyond year 2038. - some syscalls are redirected: clock_adjtime -> clock_adjtime64 clock_getres -> clock_getres_time64 clock_gettime -> clock_gettime64 clock_nanosleep -> clock_nanosleep_time64 clock_settime -> clock_settime64 futex -> futex_time64 mq_timedreceive -> mq_timedreceive_time64 mq_timedsend -> mq_timedsend_time64 ppoll -> ppoll_time64 pselect6 -> pselect6_time64 recvmmsg -> recvmmsg_time64 rt_sigtimedwait -> rt_sigtimedwait_time64 sched_rr_get_interval -> sched_rr_get_interval_time64 semtimedop -> semtimedop_time64 timer_gettime -> timer_gettime64 timer_settime -> timer_settime64 timerfd_gettime -> timerfd_gettime64 timerfd_settime -> timerfd_settime64 utimensat -> utimensat_time64. - settimeofday uses clock_settime (like in glibc/musl). - gettimeofday uses clock_gettime (like in glibc/musl). - nanosleep uses clock_nanosleep (like in glibc/musl). - There are some fixes in data structures used by libc and kernel for correct data handling both with and without enabled time64 support. Signed-off-by: Dmitry Chestnykh --- libc/sysdeps/linux/common/settimeofday.c | 21 ++++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) (limited to 'libc/sysdeps/linux/common/settimeofday.c') diff --git a/libc/sysdeps/linux/common/settimeofday.c b/libc/sysdeps/linux/common/settimeofday.c index 14a261794..75d18ffc2 100644 --- a/libc/sysdeps/linux/common/settimeofday.c +++ b/libc/sysdeps/linux/common/settimeofday.c @@ -10,9 +10,21 @@ #ifdef __USE_BSD # include -# ifdef __NR_settimeofday -_syscall2(int, settimeofday, const struct timeval *, tv, - const struct timezone *, tz) +# include + +int settimeofday(const struct timeval *tv, const struct timezone *tz) +{ + if (!tv) + return 0; + + struct timespec __ts = { + .tv_sec = tv->tv_sec, + .tv_nsec = tv->tv_usec * 1000 + }; + + return clock_settime(CLOCK_REALTIME, &__ts); +} + # elif defined __USE_SVID && defined __NR_stime # define __need_NULL # include @@ -36,7 +48,6 @@ int settimeofday(const struct timeval *tv, const struct timezone *tz) return stime(&when); } # endif -# if defined __NR_settimeofday || (defined __USE_SVID && defined __NR_stime) +# if defined __NR_settimeofday || defined(__UCLIBC_USE_TIME64__) || (defined __USE_SVID && defined __NR_stime) libc_hidden_def(settimeofday) # endif -#endif -- cgit v1.2.3