sandbox: add ifdef protection to os.h
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/include/os.h b/include/os.h
index f3af4f0..c17a8a5 100644
--- a/include/os.h
+++ b/include/os.h
@@ -25,6 +25,9 @@
* This provides access to useful OS routines from the sandbox architecture
*/
+#ifndef __OS_H__
+#define __OS_H__
+
/**
* Access to the OS read() system call
*
@@ -98,3 +101,5 @@
* \return A monotonic increasing time scaled in nano seconds
*/
u64 os_get_nsec(void);
+
+#endif