Y2038: add function __getitimer64

3 files changed, 55 insertions, 0 deletions

diff --git a/time/Makefile b/time/Makefile
index fac49865a2..b1b026d163 100644
--- a/time/Makefile
+++ b/time/Makefile
@@ -35,6 +35,7 @@ routines := offtime asctime clock ctime ctime_r difftime \
 	    gettimeofday settimeofday adjtime tzset	 \
 	    gettimeofday64 settimeofday64		 \
 	    tzfile getitimer setitimer			 \
+	    getitimer64					 \
 	    stime dysize timegm ftime			 \
 	    getdate strptime strptime_l			 \
 	    strftime wcsftime strftime_l wcsftime_l	 \
diff --git a/time/Versions b/time/Versions
index c7e9379243..b97d3f8449 100644
--- a/time/Versions
+++ b/time/Versions
@@ -90,5 +90,6 @@ libc {
     __stime64;
     __utimes64;
     __adjtime64;
+    __getitimer64;
   }
 }
diff --git a/time/getitimer64.c b/time/getitimer64.c
new file mode 100644
index 0000000000..e6f5443e33
--- /dev/null
+++ b/time/getitimer64.c
@@ -0,0 +1,53 @@
+/* Get the current value of an interval timer
+
+   Copyright (C) 2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stddef.h>
+#include <errno.h>
+#include <sys/time.h>
+
+extern int __y2038_linux_support;
+
+/* Set *VALUE to the current setting of timer WHICH.
+   Return 0 on success, -1 on errors.  */
+int
+__getitimer64 (enum __itimer_which which,
+                 struct __itimerval64 *value)
+{
+  struct itimerval value32, *value32p= NULL;
+
+  if (__y2038_linux_support)
+    {
+      /* TODO: use 64-bit syscall */
+    }
+ 
+  if (value != NULL)
+    value32p = &value32;
+
+  int result = __getitimer(which, value32p);
+
+  if (result == 0 && value != NULL)
+    {
+      value->it_interval.tv_sec = value32.it_interval.tv_sec;
+      value->it_interval.tv_usec = value32.it_interval.tv_usec;
+      value->it_value.tv_sec = value32.it_value.tv_sec;
+      value->it_value.tv_usec = value32.it_value.tv_usec;
+    }
+
+  return result;
+}