initial check-in, version 0.5.0

src/signal/sigqueue.c

@@ -0,0 +1,14 @@
+#include <signal.h>
+#include <string.h>
+#include <unistd.h>
+#include "syscall.h"
+
+int sigqueue(pid_t pid, int sig, const union sigval value)
+{
+	siginfo_t si = {
+		.si_signo = sig,
+		.si_code = -1,
+		.si_value = value,
+	};
+	return syscall3(__NR_rt_sigqueueinfo, pid, sig, (long)&si);
+}