/*  * 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. */ /* * * Conditional compilation definitions needed in ifdef.c and postio.c. * */ #ifdef SYSV#include <termio.h> #ifdef DKSTREAMS#include <sys/stream.h>#include <sys/stropts.h>#endif #endif #ifdef V9#include <sys/filio.h>#include <sys/ttyio.h> extern int	tty_ld;#endif #ifdef BSD4_2#include <sgtty.h>#include <sys/time.h>#include <errno.h> #define FD_ZERO(s) (s) = 0#define FD_SET(n,s) (s) |= 1 << (n) extern int	errno;#endif #ifdef DKHOST#include <dk.h>#include <sysexits.h> extern char	*dtnamer();extern int	dkminor();#endif /* * * External variable declarations - most (if not all) are defined in postio.c and * needed by the routines in ifdef.c. * */ extern char	*line;			/* printer is on this line */extern int	ttyi;			/* input */extern int	ttyo;			/* and output file descriptors */extern FILE	*fp_log;		/* just for DKHOST stuff */ extern char	mesg[];			/* exactly what came back on ttyi */extern char	*endmesg;		/* one in front of last free slot in mesg */extern int	next;			/* next character goes in mesg[next] */ extern short	baudrate;		/* printer is running at this speed */extern int	stopbits;		/* and expects this many stop bits */extern int	interactive;		/* TRUE for interactive mode */ extern int	whatami;		/* a READ or WRITE process - or both */extern int	canread;		/* allows reads */extern int	canwrite;		/* and writes if TRUE */