NAME

ioctl_tty - ioctls for terminals and serial lines

LIBRARY

Standard C library (libc, -lc)

SYNOPSIS

#include <asm/termbits.h>  /* Definition of constants */
#include <sys/ioctl.h>

int ioctl(int fd, int op, ...);

DESCRIPTION

The ioctl(2) call for terminals and serial ports accepts many possible operation arguments. Most require a third argument, of varying type, here called argp or arg.

Use of ioctl() makes for nonportable programs. Use the POSIX interface described in termios(3) whenever possible.

RETURN VALUE

On success, 0 is returned. On error, -1 is returned, and errno is set to indicate the error.

SEE ALSO

ioctl(2), ldattach(8), ioctl_console(2), termios(3), pty(7)