Y2038: add functions using futexes

This creates 64-bit time versions of the following APIs:
- pthread_rwlock_timedrdlock
- pthread_rwlock_timedwrlock
- pthread_mutex_timedlock
- pthread_cond_timedwait
- sem_timedwait
- aio_suspend

It also creates 64-bit time versions of the following
functions or macros:
- lll_timedlock_elision
- lll_timedlock
- __lll_timedlock_wait
- futex_reltimed_wait_cancelable
- lll_futex_timed_wait
- __pthread_cond_wait_common
- futex_abstimed_wait_cancelable
- lll_futex_timed_wait_bitset
- do_aio_misc_wait
- AIO_MISC_WAIT
- __new_sem_wait_slow
- do_futex_wait
- __pthread_rwlock_wrlock_full
- __pthread_rwlock_rdlock_full
- futex_abstimed_wait

1 files changed, 18 insertions, 0 deletions

diff --git a/nptl/sem_timedwait.c b/nptl/sem_timedwait.c
index 8886ea2fb3..8a6bfba4ec 100644
--- a/nptl/sem_timedwait.c
+++ b/nptl/sem_timedwait.c
@@ -38,3 +38,21 @@ sem_timedwait (sem_t *sem, const struct timespec *abstime)
   else
     return __new_sem_wait_slow((struct new_sem *) sem, abstime);
 }
+
+int
+__sem_timedwait64 (sem_t *sem, const struct __timespec64 *abstime)
+{
+  if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  /* Check sem_wait.c for a more detailed explanation why it is required.  */
+  __pthread_testcancel ();
+
+  if (__new_sem_wait_fast ((struct new_sem *) sem, 0) == 0)
+    return 0;
+  else
+    return __new_sem_wait_slow64 ((struct new_sem *) sem, abstime);
+}