extern int bb_xsocket(int domain, int type, int protocol);
extern pid_t bb_spawn(char **argv);
extern pid_t bb_xspawn(char **argv);
+extern int wait4pid(int pid);
extern void bb_xdaemon(int nochdir, int noclose);
extern void bb_xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen);
extern void bb_xlisten(int s, int backlog);