--- /dev/null
+#ifndef __LUNAIX_SYS_SIGNAL_H
+#define __LUNAIX_SYS_SIGNAL_H
+
+#include <lunaix/signal_defs.h>
+#include <lunaix/types.h>
+
+extern int
+signal(int signum, sighandler_t handler);
+
+extern int
+sigpending(sigset_t* set);
+
+extern int
+sigsuspend(const sigset_t* mask);
+
+extern int
+sigprocmask(int how, const sigset_t* set, sigset_t* oldset);
+
+#endif /* __LUNAIX_SIGNAL_H */