/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ /*	tty.h -- centralized definitions for a variety of terminal interfaces 	created by DPK, Oct. 1986 	Rearranged to work with autoconf, added TTY_state, get_tty/set_tty						Michael Rendell, May '94 	last edit:	30-Jul-1987	D A Gwyn*//* $Id$ */ /* some useful #defines */#ifdef EXTERN# define I__(i) = i#else# define I__(i)# define EXTERN extern# define EXTERN_DEFINED#endif /* Don't know of a system on which including sys/ioctl.h with termios.h * causes problems.  If there is one, these lines need to be deleted and * aclocal.m4 needs to have stuff un-commented. */#ifdef SYS_IOCTL_WITH_TERMIOS# define SYS_IOCTL_WITH_TERMIOS#endif /* SYS_IOCTL_WITH_TERMIOS */#ifdef SYS_IOCTL_WITH_TERMIO# define SYS_IOCTL_WITH_TERMIO#endif /* SYS_IOCTL_WITH_TERMIO */ #ifdef	HAVE_TERMIOS_H# include <termios.h># ifdef SYS_IOCTL_WITH_TERMIOS#  if !(defined(sun) && !defined(__svr4__)) /* too many warnings on sunos */    /* Need to include sys/ioctl.h on some systems to get the TIOCGWINSZ     * stuff (eg, digital unix).     */#   include <sys/ioctl.h>#  endif /* !(sun && !__svr4__) */# endif /* SYS_IOCTL_WITH_TERMIOS */typedef struct termios TTY_state;#else# ifdef HAVE_TERMIO_H#  include <termio.h>#  ifdef SYS_IOCTL_WITH_TERMIO#   include <sys/ioctl.h> /* see comment above in termios stuff */#  endif /* SYS_IOCTL_WITH_TERMIO */#  if _BSD_SYSV			/* BRL UNIX System V emulation */#   ifndef NTTYDISC#    define	TIOCGETD	_IOR( 't', 0, int )#    define	TIOCSETD	_IOW( 't', 1, int )#    define	NTTYDISC	2#   endif#   ifndef TIOCSTI#    define	TIOCSTI		_IOW( 't', 114, char )#   endif#   ifndef TIOCSPGRP#    define	TIOCSPGRP	_IOW( 't', 118, int )#   endif#  endif /* _BSD_SYSV */typedef struct termio TTY_state;# else /* HAVE_TERMIO_H *//* Assume BSD tty stuff.  Uses TIOCGETP, TIOCSETN; uses TIOCGATC/TIOCSATC if * available, otherwise it uses TIOCGETC/TIOCSETC (also uses TIOCGLTC/TIOCSLTC * if available) */#  ifdef _MINIX#   include <sgtty.h>#   define TIOCSETN	TIOCSETP#  else#   include <sys/ioctl.h>#  endiftypedef struct {	struct sgttyb	sgttyb;#  ifdef TIOCGATC	struct lchars	lchars;#  else /* TIOCGATC */	struct tchars	tchars;#   ifdef TIOCGLTC	struct ltchars	ltchars;#   endif /* TIOCGLTC */#  endif /* TIOCGATC */} TTY_state;# endif /* HAVE_TERMIO_H */#endif /* HAVE_TERMIOS_H */ /* Flags for set_tty() */#define TF_NONE		0x00#define TF_WAIT		0x01	/* drain output, even it requires sleep() */#define TF_MIPSKLUDGE	0x02	/* kludge to unwedge RISC/os 5.0 tty driver */ EXTERN int		tty_fd I__(-1);	/* dup'd tty file descriptor */EXTERN int		tty_devtty;	/* true if tty_fd is from /dev/tty */EXTERN TTY_state	tty_state;	/* saved tty state */ extern int	get_tty ARGS((int fd, TTY_state *ts));extern int	set_tty ARGS((int fd, TTY_state *ts, int flags));extern void	tty_init ARGS((int init_ttystate));extern void	tty_close ARGS((void)); /* be sure not to interfere with anyone else's idea about EXTERN */#ifdef EXTERN_DEFINED# undef EXTERN_DEFINED# undef EXTERN#endif#undef I__