several functions that are defined in /sys/include/ape/libnet.h were missing from the library. i've added those, configured them to use POSIX functions and modified the mkfile to compile them.

Reference: /n/sources/patch/applied/ape-libnet-missing-functions
Date: Tue Nov 27 20:56:39 CET 2007
Signed-off-by: mirtchovski@gmail.com

--- /sys/src/ape/lib/net/netmkaddr.c	Thu Jan  1 00:00:00 1970
+++ /sys/src/ape/lib/net/netmkaddr.c	Tue Nov 27 20:55:29 2007
@@ -0,0 +1,56 @@
+#include <stdlib.h>
+#include <sys/types.h>
+#include <string.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <libnet.h>
+
+/*
+ *  make an address, add the defaults
+ */
+char *
+netmkaddr(char *linear, char *defnet, char *defsrv)
+{
+	static char addr[256];
+	char *cp;
+
+	/*
+	 *  dump network name
+	 */
+	cp = strchr(linear, '!');
+	if(cp == 0){
+		if(defnet==0){
+			if(defsrv)
+				snprintf(addr, sizeof(addr), "net!%s!%s",
+					linear, defsrv);
+			else
+				snprintf(addr, sizeof(addr), "net!%s", linear);
+		}
+		else {
+			if(defsrv)
+				snprintf(addr, sizeof(addr), "%s!%s!%s", defnet,
+					linear, defsrv);
+			else
+				snprintf(addr, sizeof(addr), "%s!%s", defnet,
+					linear);
+		}
+		return addr;
+	}
+
+	/*
+	 *  if there is already a service, use it
+	 */
+	cp = strchr(cp+1, '!');
+	if(cp)
+		return linear;
+
+	/*
+	 *  add default service
+	 */
+	if(defsrv == 0)
+		return linear;
+	snprintf(addr, sizeof(addr), "%s!%s", linear, defsrv);
+
+	return addr;
+}
--- /sys/src/ape/lib/net/hangup.c	Thu Jan  1 00:00:00 1970
+++ /sys/src/ape/lib/net/hangup.c	Tue Nov 27 20:55:32 2007
@@ -0,0 +1,16 @@
+#include <stdlib.h>
+#include <sys/types.h>
+#include <string.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <libnet.h>
+
+/*
+ *  force a connection to hangup
+ */
+int
+hangup(int ctl)
+{
+	return write(ctl, "hangup", sizeof("hangup")-1) != sizeof("hangup")-1;
+}
--- /sys/src/ape/lib/net/mkfile	Tue Nov 27 20:55:36 2007
+++ /sys/src/ape/lib/net/mkfile	Tue Nov 27 20:55:34 2007
@@ -4,6 +4,9 @@
 LIB=/$objtype/lib/ape/libnet.a
 OFILES=dial.$O\
 	announce.$O\
+	netmkaddr.$O\
+	hangup.$O\
+	
 
 </sys/src/cmd/mksyslib