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>

1 files changed, 97 insertions, 0 deletions

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 <time64-compat.h>
 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
+}