diff --git a/src/internal/ksigaction.h b/src/internal/ksigaction.h
new file mode 100644
index 00000000..8bdfd1d8
--- /dev/null
+++ b/src/internal/ksigaction.h
@@ -0,0 +1,6 @@
+struct k_sigaction {
+	void (*handler)(int);
+	unsigned long flags;
+	void (*restorer)(void);
+	long mask[2];
+};