-#define _SIG_BLOCK 1
-#define _SIG_UNBLOCK 2
-#define _SIG_SETMASK 3
-
-typedef unsigned int sigset_t;
-typedef void (*sighandler_t)(int);
-
-__LXSYSCALL2(int, signal, int, signum, sighandler_t, handler);
-
-__LXSYSCALL1(int, sigpending, sigset_t, *set);
-__LXSYSCALL1(int, sigsuspend, const sigset_t, *mask);
-
-__LXSYSCALL3(int,
- sigprocmask,
- int,
- how,
- const sigset_t,
- *set,
- sigset_t,
- *oldset);
+#define _SIG_BLOCK SIG_BLOCK
+#define _SIG_UNBLOCK SIG_UNBLOCK
+#define _SIG_SETMASK SIG_SETMASK