1 files changed, 59 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/times.c b/sysdeps/unix/sysv/linux/times.c
new file mode 100644
index 0000000000..42d265dc87
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/times.c
@@ -0,0 +1,59 @@
+/* Copyright (C) 2008 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <sys/times.h>
+#include <sysdep.h>
+
+
+clock_t
+__times (struct tms *buf)
+{
+  INTERNAL_SYSCALL_DECL (err);
+  clock_t ret = INTERNAL_SYSCALL (times, err, 1, buf);
+  if (INTERNAL_SYSCALL_ERROR_P (ret, err)
+      && __builtin_expect (INTERNAL_SYSCALL_ERRNO (ret, err) == EFAULT, 0))
+    {
+      /* This might be an error or not.  For architectures which have
+	 no separate return value and error indicators we cannot
+	 distinguish a return value of -1 from an error.  Do it the
+	 hard way.  We crash applications which pass in an invalid BUF
+	 pointer.  */
+#define touch(v) \
+      do {								      \
+	clock_t temp = v;						      \
+	asm volatile ("" : "+r" (temp));				      \
+	v = temp;							      \
+      } while (0)
+      touch (buf->tms_utime);
+      touch (buf->tms_stime);
+      touch (buf->tms_cutime);
+      touch (buf->tms_cstime);
+
+      /* If we come here the memory is valid and the kernel did not
+	 return an EFAULT error.  Return the value given by the kernel.  */
+    }
+
+  /* Return value (clock_t) -1 signals an error, but if there wasn't any,
+     return the following value.  */
+  if (ret == (clock_t) -1)
+    return (clock_t) 0;
+
+  return ret;
+}
+weak_alias (__times, times)