From a030a9e6b788b2a8542f18efb81f4a12ad01af08 Mon Sep 17 00:00:00 2001
From: "Albert ARIBAUD (3ADEV)" <albert.aribaud@3adev.fr>
Date: Fri, 8 Sep 2017 00:41:46 +0200
Subject: Y2038: add function __timer_gettime64

For Linux this uses the 32-bit time syscall, so it
converts the syscall output into 64-bit time.
---
 rt/Versions                                        |  3 ++
 sysdeps/unix/sysv/linux/arm/librt.abilist          |  1 +
 .../sysv/linux/powerpc/powerpc32/librt.abilist     |  1 +
 sysdeps/unix/sysv/linux/timer_gettime.c            | 33 ++++++++++++++++++++++
 4 files changed, 38 insertions(+)

diff --git a/rt/Versions b/rt/Versions
index 91e3fd2a20..e55faa0629 100644
--- a/rt/Versions
+++ b/rt/Versions
@@ -37,4 +37,7 @@ librt {
   GLIBC_2.7 {
    __mq_open_2;
   }
+  GLIBC_2.29 {
+   __timer_gettime64;
+  }
 }
diff --git a/sysdeps/unix/sysv/linux/arm/librt.abilist b/sysdeps/unix/sysv/linux/arm/librt.abilist
index cfbbd27557..e18f5ee3f5 100644
--- a/sysdeps/unix/sysv/linux/arm/librt.abilist
+++ b/sysdeps/unix/sysv/linux/arm/librt.abilist
@@ -1,3 +1,4 @@
+GLIBC_2.29 __timer_gettime64 F
 GLIBC_2.4 aio_cancel F
 GLIBC_2.4 aio_cancel64 F
 GLIBC_2.4 aio_error F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/librt.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/librt.abilist
index 595f1b712a..cb6ba7248e 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/librt.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/librt.abilist
@@ -27,6 +27,7 @@ GLIBC_2.2 timer_delete F
 GLIBC_2.2 timer_getoverrun F
 GLIBC_2.2 timer_gettime F
 GLIBC_2.2 timer_settime F
+GLIBC_2.29 __timer_gettime64 F
 GLIBC_2.3.4 mq_close F
 GLIBC_2.3.4 mq_getattr F
 GLIBC_2.3.4 mq_notify F
diff --git a/sysdeps/unix/sysv/linux/timer_gettime.c b/sysdeps/unix/sysv/linux/timer_gettime.c
index 10a19d9ee7..85806f4282 100644
--- a/sysdeps/unix/sysv/linux/timer_gettime.c
+++ b/sysdeps/unix/sysv/linux/timer_gettime.c
@@ -20,6 +20,7 @@
 #include <stdlib.h>
 #include <time.h>
 #include <sysdep.h>
+#include <y2038-support.h>
 #include "kernel-posix-timers.h"
 
 
@@ -39,3 +40,35 @@ timer_gettime (timer_t timerid, struct itimerspec *value)
 
   return res;
 }
+
+/* 64-bit time version */
+
+int
+__timer_gettime64 (timer_t timerid, struct __itimerspec64 *value)
+{
+  struct itimerspec value32;
+  struct timer *kt = (struct timer *) timerid;
+  int res;
+
+#ifdef __NR_timer_gettime64
+  if (__y2038_get_kernel_support () > 0)
+    {
+      res = INLINE_SYSCALL (timer_gettime, 2, kt->ktimerid, value);
+      if (res == 0 || errno != ENOSYS)
+        return res;
+      __y2038_set_kernel_support (-1);
+    }
+#endif
+
+  res = INLINE_SYSCALL (timer_gettime, 2, kt->ktimerid, &value32);
+
+  if (res == 0)
+    {
+      value->it_value.tv_sec = value32.it_value.tv_sec;
+      value->it_value.tv_nsec = value32.it_value.tv_nsec;
+      value->it_interval.tv_sec = value32.it_interval.tv_sec;
+      value->it_interval.tv_nsec = value32.it_interval.tv_nsec;
+    }
+
+  return res;
+}
-- 
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