1 files changed, 30 insertions, 0 deletions
diff --git a/sysdeps/nacl/dup.c b/sysdeps/nacl/dup.c
new file mode 100644
index 0000000000..1f66c521c7
--- /dev/null
+++ b/sysdeps/nacl/dup.c
@@ -0,0 +1,30 @@
+/* Duplicate a file descriptor.  NaCl version.
+   Copyright (C) 2015 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 <unistd.h>
+#include <nacl-interfaces.h>
+
+
+/* Duplicate FD, returning a new file descriptor open on the same file.  */
+int
+__dup (int fd)
+{
+  int result;
+  return NACL_CALL (__nacl_irt_fdio.dup (fd, &result), result);
+}
+weak_alias (__dup, dup)