Add <sys/un.h>

diff --git a/include/sys/un.h b/include/sys/un.h
new file mode 100644
index 0000000..df42d71
--- /dev/null
+++ b/include/sys/un.h
@@ -0,0 +1,10 @@
+/*
+ * <sys/un.h>
+ */
+
+#ifndef _SYS_UN_H
+#define _SYS_UN_H
+
+#include <linux/un.h>
+
+#endif /* _SYS_UN_H */
diff --git a/klibc/include/sys/un.h b/klibc/include/sys/un.h
new file mode 100644
index 0000000..df42d71
--- /dev/null
+++ b/klibc/include/sys/un.h
@@ -0,0 +1,10 @@
+/*
+ * <sys/un.h>
+ */
+
+#ifndef _SYS_UN_H
+#define _SYS_UN_H
+
+#include <linux/un.h>
+
+#endif /* _SYS_UN_H */