Radix cross Linux

Index: recvping.c
===================================================================
--- recvping.c	(nonexistent)
+++ recvping.c	(revision 5)
@@ -0,0 +1,32 @@
+/*
+ * Infinite loop to receive every ICMP packet received on the socket.
+ * For every packet that's received, we just call pr_pack() to look
+ * at it and print it.
+ */
+
+#include	"defs.h"
+
+int recv_ping()
+{
+	register int		n;
+#if !defined(__GLIBC__)
+	int			fromlen;
+#else /* __GLIBC__ */
+	socklen_t		fromlen;
+#endif /* __GLIBC__ */
+	struct sockaddr_in	from;
+
+	for ( ; ; ) {
+		fromlen = sizeof(from);
+		if ( (n = recvfrom(sockfd, recvpack, sizeof(recvpack), 0,
+				(struct sockaddr *) &from, &fromlen)) < 0) {
+			if (errno == EINTR)
+				continue;	/* normal */
+			err_ret("recvfrom error");
+			continue;
+		}
+
+		pr_pack(recvpack, n, &from);
+
+	}
+}