#include <sys/poll.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
+#include <termios.h>
#ifndef NO_SYS_SELECT_H
#include <sys/select.h>
#endif
/* General helper functions */
extern NORETURN void usage(const char *err);
+extern NORETURN void usagef(const char *err, ...) __attribute__((format (printf, 1, 2)));
extern NORETURN void die(const char *err, ...) __attribute__((format (printf, 1, 2)));
extern NORETURN void die_errno(const char *err, ...) __attribute__((format (printf, 1, 2)));
extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
extern char *xstrdup(const char *str);
extern void *xmalloc(size_t size);
+extern void *xmallocz(size_t size);
extern void *xmemdupz(const void *data, size_t len);
extern char *xstrndup(const char *str, size_t len);
extern void *xrealloc(void *ptr, size_t size);