From 47f24c21ee38701ae275aa9e451f70fa3e77478c Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Wed, 17 Feb 2021 13:35:19 -0300 Subject: y2038: Add support for 64-bit time on legacy ABIs A new build flag, _TIME_BITS, enables the usage of the newer 64-bit time symbols for legacy ABI (where 32-bit time_t is default). The 64 bit time support is only enabled if LFS (_FILE_OFFSET_BITS=64) is also used. Different than LFS support, the y2038 symbols are added only for the required ABIs (armhf, csky, hppa, i386, m68k, microblaze, mips32, mips64-n32, nios2, powerpc32, sparc32, s390-32, and sh). The ABIs with 64-bit time support are unchanged, both for symbol and types redirection. On Linux the full 64-bit time support requires a minimum of kernel version v5.1. Otherwise, the 32-bit fallbacks are used and might results in error with overflow return code (EOVERFLOW). The i686-gnu does not yet support 64-bit time. This patch exports following rediretions to support 64-bit time: * libc: adjtime adjtimex clock_adjtime clock_getres clock_gettime clock_nanosleep clock_settime cnd_timedwait ctime ctime_r difftime fstat fstatat futimens futimes futimesat getitimer getrusage gettimeofday gmtime gmtime_r localtime localtime_r lstat_time lutimes mktime msgctl mtx_timedlock nanosleep nanosleep ntp_gettime ntp_gettimex ppoll pselec pselect pthread_clockjoin_np pthread_cond_clockwait pthread_cond_timedwait pthread_mutex_clocklock pthread_mutex_timedlock pthread_rwlock_clockrdlock pthread_rwlock_clockwrlock pthread_rwlock_timedrdlock pthread_rwlock_timedwrlock pthread_timedjoin_np recvmmsg sched_rr_get_interval select sem_clockwait semctl semtimedop sem_timedwait setitimer settimeofday shmctl sigtimedwait stat thrd_sleep time timegm timerfd_gettime timerfd_settime timespec_get utime utimensat utimes utimes wait3 wait4 * librt: aio_suspend mq_timedreceive mq_timedsend timer_gettime timer_settime * libanl: gai_suspend Reviewed-by: Lukasz Majewski Reviewed-by: Carlos O'Donell Tested-by: Carlos O'Donell --- nptl/pthread_rwlock_clockrdlock.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'nptl/pthread_rwlock_clockrdlock.c') diff --git a/nptl/pthread_rwlock_clockrdlock.c b/nptl/pthread_rwlock_clockrdlock.c index 9db96b9904..83ae1d1823 100644 --- a/nptl/pthread_rwlock_clockrdlock.c +++ b/nptl/pthread_rwlock_clockrdlock.c @@ -31,8 +31,8 @@ ___pthread_rwlock_clockrdlock64 (pthread_rwlock_t *rwlock, clockid_t clockid, #if __TIMESIZE == 64 strong_alias (___pthread_rwlock_clockrdlock64, ___pthread_rwlock_clockrdlock) #else /* __TIMESPEC64 != 64 */ -libc_hidden_ver (___pthread_rwlock_clockrdlock64, - __pthread_rwlock_clockrdlock64) +strong_alias (___pthread_rwlock_clockrdlock64, __pthread_rwlock_clockrdlock64) +libc_hidden_def (__pthread_rwlock_clockrdlock64) int ___pthread_rwlock_clockrdlock (pthread_rwlock_t *rwlock, clockid_t clockid, -- cgit 1.4.1