#include	"calld.h"#include	<syslog.h>int			clifd, log_to_stderr, client_size;int			Debug;	/* Debug controlled by client, not cmd line */char		errmsg[MAXLINE];char		*speed, *sysname;uid_t		uid;Client		*client = NULL;Systems		systems;Devices		devices;Dialers		dialers;volatile sig_atomic_t chld_flag;enum parity parity = NONE;intmain(int argc, char *argv[]){	int		c;	log_open("calld", LOG_PID, LOG_USER);	opterr = 0;		/* don't want getopt() writing to stderr */	while ((c = getopt(argc, argv, "d")) != EOF) {		switch (c) {		case 'd':		/* debug */			log_to_stderr = 1;			break;		case '?':			log_quit("unrecognized option: -%c", optopt);		}	}	if (log_to_stderr == 0)		daemonize("calld");	loop();		/* never returns */}