initial check-in, version 0.5.0

src/network/getsockopt.c

@@ -0,0 +1,13 @@
+#include <sys/socket.h>
+#include "syscall.h"
+#include "socketcall.h"
+
+int getsockopt(int fd, int level, int optname, void *optval, socklen_t *optlen)
+{
+	unsigned long args[] = {
+		fd, level, optname,
+		(unsigned long)optval,
+		(unsigned long)optlen
+	};
+	return syscall2(__NR_socketcall, SYS_GETSOCKOPT, (long)args);
+}