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 --- sysdeps/unix/sysv/linux/Versions | 97 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 97 insertions(+) (limited to 'sysdeps/unix/sysv/linux/Versions') diff --git a/sysdeps/unix/sysv/linux/Versions b/sysdeps/unix/sysv/linux/Versions index c864ad3..8fb05da 100644 --- a/sysdeps/unix/sysv/linux/Versions +++ b/sysdeps/unix/sysv/linux/Versions @@ -1,3 +1,4 @@ +%include libc { GLIBC_2.0 { # functions used in inline functions or macros @@ -186,6 +187,81 @@ libc { } GLIBC_2.32 { } + GLIBC_2.34 { +%ifdef TIME64_NON_DEFAULT + # 64-bit time_t support + __adjtime64; + ___adjtimex64; + __clock_adjtime64; + __clock_getres64; + __clock_gettime64; + __clock_nanosleep_time64; + __clock_settime64; + __cnd_timedwait64; + __ctime64; + __ctime64_r; + __difftime64; + __fstat64_time64; + __fstatat64_time64; + __futimens64; + __futimes64; + __futimesat64; + __getitimer64; + __getrusage64; + __gettimeofday64; + __gmtime64; + __gmtime64_r; + __localtime64; + __localtime64_r; + __lstat64_time64; + __lutimes64; + __mktime64; + __msgctl64; + __mtx_timedlock64; + __nanosleep64; + __nanosleep64; + __ntp_gettime64; + __ntp_gettimex64; + __ppoll64; + __pselec64; + __pselect64; + __pthread_clockjoin_np64; + __pthread_cond_clockwait64; + __pthread_cond_timedwait64; + __pthread_mutex_clocklock64; + __pthread_mutex_timedlock64; + __pthread_rwlock_clockrdlock64; + __pthread_rwlock_clockwrlock64; + __pthread_rwlock_timedrdlock64; + __pthread_rwlock_timedwrlock64; + __pthread_timedjoin_np64; + __recvmmsg64; + __sched_rr_get_interval64; + __select64; + __sem_clockwait64; + __semctl64; + __semtimedop64; + __sem_timedwait64; + __setitimer64; + __settimeofday64; + __shmctl64; + __sigtimedwait64; + __stat64_time64; + __thrd_sleep64; + __time64; + __timegm64; + __timerfd_gettime64; + __timerfd_settime64; + __timespec_get64; + __timespec_getres64; + __utime64; + __utimensat64; + __utimes64; + __utimes64; + __wait3_time64; + __wait4_time64; +%endif + } GLIBC_PRIVATE { # functions used in other libraries __syscall_rt_sigqueueinfo; @@ -204,3 +280,24 @@ ld { __nptl_change_stack_perm; } } + +librt { + GLIBC_2.34 { +%ifdef TIME64_NON_DEFAULT + # 64-bit time_t support + __aio_suspend_time64; + __mq_timedsend_time64; + __mq_timedreceive_time64; + __timer_gettime64; + __timer_settime64; +%endif + } +} + +libanl { +%ifdef TIME64_NON_DEFAULT + GLIBC_2.34 { + __gai_suspend_time64; + } +%endif +} -- cgit v1.1