/* common.h * * Source common to all modules: */#include <stdio.h>#include <unistd.h>#include <stdlib.h>#include <errno.h>#include <string.h>#include <fcntl.h>#include <time.h>#include <sys/types.h>#include <sys/socket.h>#include <netinet/in.h>#include <sys/un.h>#include <sys/uio.h>#ifndef TRUE#define TRUE    1#define FALSE   0#endifextern void bail(const char *on_what);extern int recv_fd(int s);extern int reqport(int port);extern int send_fd(    int s,int fd,    void *addr,socklen_t alen);extern int recv_cred(    int s,struct ucred *credp,    void *buf,unsigned bufsiz,    void *addr,socklen_t *alen);