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>

3 files changed, 41 insertions, 0 deletions

diff --git a/sysvipc/sys/msg.h b/sysvipc/sys/msg.h
index 9ddedf5e15..f31a43757d 100644
--- a/sysvipc/sys/msg.h
+++ b/sysvipc/sys/msg.h
@@ -58,7 +58,17 @@ struct msgbuf
 __BEGIN_DECLS
 
 /* Message queue control operation.  */
+#ifndef __USE_TIME_BITS64
 extern int msgctl (int __msqid, int __cmd, struct msqid_ds *__buf) __THROW;
+#else
+# ifdef __REDIRECT_NTH
+extern int __REDIRECT_NTH (msgctl,
+                           (int __msqid, int __cmd, struct msqid_ds *__buf),
+                           __msgctl64);
+# else
+#  define msgctl __msgctl64
+# endif
+#endif
 
 /* Get messages queue.  */
 extern int msgget (key_t __key, int __msgflg) __THROW;
diff --git a/sysvipc/sys/sem.h b/sysvipc/sys/sem.h
index 03b65dff21..4eb4c51bbe 100644
--- a/sysvipc/sys/sem.h
+++ b/sysvipc/sys/sem.h
@@ -48,7 +48,17 @@ struct sembuf
 __BEGIN_DECLS
 
 /* Semaphore control operation.  */
+#ifndef __USE_TIME_BITS64
 extern int semctl (int __semid, int __semnum, int __cmd, ...) __THROW;
+#else
+# ifdef __REDIRECT_NTH
+extern int __REDIRECT_NTH (semctl,
+                           (int __semid, int __semnum, int __cmd, ...),
+                           __semctl64);
+# else
+#  define semctl __semctl64
+# endif
+#endif
 
 /* Get semaphore.  */
 extern int semget (key_t __key, int __nsems, int __semflg) __THROW;
@@ -58,8 +68,19 @@ extern int semop (int __semid, struct sembuf *__sops, size_t __nsops) __THROW;
 
 #ifdef __USE_GNU
 /* Operate on semaphore with timeout.  */
+# ifndef __USE_TIME_BITS64
 extern int semtimedop (int __semid, struct sembuf *__sops, size_t __nsops,
 		       const struct timespec *__timeout) __THROW;
+# else
+#  ifdef __REDIRECT_NTH
+extern int __REDIRECT_NTH (semtimedop, (int __semid, struct sembuf *__sops,
+                                        size_t __nsops,
+                                        const struct timespec *__timeout),
+                           __semtimedop64);
+#  else
+#   define semtimedop __semtimedop64
+#  endif
+# endif
 #endif
 
 __END_DECLS
diff --git a/sysvipc/sys/shm.h b/sysvipc/sys/shm.h
index 7506ba67bf..b09e0497e6 100644
--- a/sysvipc/sys/shm.h
+++ b/sysvipc/sys/shm.h
@@ -46,7 +46,17 @@ __BEGIN_DECLS
    facility.  The definition is found in XPG4.2.  */
 
 /* Shared memory control operation.  */
+#ifndef __USE_TIME_BITS64
 extern int shmctl (int __shmid, int __cmd, struct shmid_ds *__buf) __THROW;
+#else
+# ifdef __REDIRECT_NTH
+extern int __REDIRECT_NTH (shmctl,
+                           (int __shmid, int __cmd, struct shmid_ds *__buf),
+                           __shmctl64);
+# else
+#  define shmctl __shmctl64
+# endif
+#endif
 
 /* Get shared memory segment.  */
 extern int shmget (key_t __key, size_t __size, int __shmflg) __THROW;