#include <u.h>#include <libc.h>#include <ctype.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)				snprint(addr, sizeof(addr), "net!%s!%s",					linear, defsrv);			else				snprint(addr, sizeof(addr), "net!%s", linear);		}		else {			if(defsrv)				snprint(addr, sizeof(addr), "%s!%s!%s", defnet,					linear, defsrv);			else				snprint(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;	snprint(addr, sizeof(addr), "%s!%s", linear, defsrv); 	return addr;}