glibc/signal
Adhemerval Zanella 47f24c21ee 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 <lukma@denx.de>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
2021-06-15 10:42:11 -03:00
..
bits/types
sys
allocrtsig.c
kill.c
killpg.c
libc_sigaction.c
Makefile
raise.c
sigaction.c
sigaddset.c
sigaltstack.c
sigandset.c
sigblock.c
sigdelset.c
sigempty.c
sigfillset.c
siggetmask.c
sighold.c
sigignore.c
sigintr.c
sigisempty.c
sigismem.c
signal.c
signal.h
sigorset.c
sigpause.c
sigpending.c
sigprocmask.c
sigqueue.c
sigrelse.c
sigreturn.c
sigset.c
sigsetmask.c
sigsetops.c
sigstack.c
sigsuspend.c
sigtimedwait.c
sigvec.c
sigwait.c
sigwaitinfo.c
sysv_signal.c
tst-minsigstksz-1.c
tst-minsigstksz-2.c
tst-minsigstksz-3.c
tst-minsigstksz-3a.c
tst-minsigstksz-4.c
tst-minsigstksz-5.c
tst-raise.c
tst-sigaction.c
tst-sigisemptyset.c
tst-signal.c
tst-sigset2.c
tst-sigset.c
tst-sigsimple.c
tst-sigwait-eintr.c
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