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/* $Header: /p/tcsh/cvsroot/tcsh/tc.disc.c,v 3.18 2011/01/09 16:25:29 christos Exp $ */
/*
* tc.disc.c: Functions to set/clear line disciplines
*
*/
/*-
* Copyright (c) 1980, 1991 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "sh.h"
RCSID("$tcsh: tc.disc.c,v 3.18 2011/01/09 16:25:29 christos Exp $")
#ifdef OREO
#include <compat.h>
#endif /* OREO */
#include "ed.h"
static int add_discipline = 0; /* Did we add a line discipline */
#if defined(IRIS4D) || defined(OREO) || defined(sonyrisc) || defined(__ANDROID__)
# define HAVE_DISC
# ifndef POSIX
static struct termio otermiob;
# else
static struct termios otermiob;
# endif /* POSIX */
#endif /* IRIS4D || OREO */
#ifdef _IBMR2
# define HAVE_DISC
char strPOSIX[] = "posix";
#endif /* _IBMR2 */
#if !defined(HAVE_DISC) && defined(TIOCGETD) && defined(NTTYDISC)
static int oldisc;
#endif /* !HAVE_DISC && TIOCGETD && NTTYDISC */
int
/*ARGSUSED*/
setdisc(int f)
{
#ifdef IRIS4D
# ifndef POSIX
struct termio termiob;
# else
struct termios termiob;
# endif
if (ioctl(f, TCGETA, (ioctl_t) & termiob) == 0) {
otermiob = termiob;
#if (SYSVREL < 4) || !defined(IRIS4D)
if (termiob.c_line != NTTYDISC || termiob.c_cc[VSWTCH] == 0) { /*}*/
termiob.c_line = NTTYDISC;
#else
if (termiob.c_cc[VSWTCH] == 0) {
#endif
termiob.c_cc[VSWTCH] = CSWTCH;
if (ioctl(f, TCSETA, (ioctl_t) & termiob) != 0)
return (-1);
}
}
else
return (-1);
add_discipline = 1;
return (0);
#endif /* IRIS4D */
#ifdef OREO
# ifndef POSIX
struct termio termiob;
# else
struct termios termiob;
# endif
struct ltchars ltcbuf;
if (ioctl(f, TCGETA, (ioctl_t) & termiob) == 0) {
int comp = getcompat(COMPAT_BSDTTY);
otermiob = termiob;
if ((comp & COMPAT_BSDTTY) != COMPAT_BSDTTY) {
(void) setcompat(comp | COMPAT_BSDTTY);
if (ioctl(f, TIOCGLTC, (ioctl_t) & ltcbuf) != 0)
xprintf(CGETS(21, 1, "Couldn't get local chars.\n"));
else {
ltcbuf.t_suspc = CTL_ESC('\032'); /* ^Z */
ltcbuf.t_dsuspc = CTL_ESC('\031'); /* ^Y */
ltcbuf.t_rprntc = CTL_ESC('\022'); /* ^R */
ltcbuf.t_flushc = CTL_ESC('\017'); /* ^O */
ltcbuf.t_werasc = CTL_ESC('\027'); /* ^W */
ltcbuf.t_lnextc = CTL_ESC('\026'); /* ^V */
if (ioctl(f, TIOCSLTC, (ioctl_t) & ltcbuf) != 0)
xprintf(CGETS(21, 2, "Couldn't set local chars.\n"));
}
termiob.c_cc[VSWTCH] = '\0';
if (ioctl(f, TCSETAF, (ioctl_t) & termiob) != 0)
return (-1);
}
}
else
return (-1);
add_discipline = 1;
return (0);
#endif /* OREO */
#ifdef _IBMR2
union txname tx;
tx.tx_which = 0;
if (ioctl(f, TXGETLD, (ioctl_t) & tx) == 0) {
if (strcmp(tx.tx_name, strPOSIX) != 0)
if (ioctl(f, TXADDCD, (ioctl_t) strPOSIX) == 0) {
add_discipline = 1;
return (0);
}
return (0);
}
else
return (-1);
#endif /* _IBMR2 */
#ifndef HAVE_DISC
# if defined(TIOCGETD) && defined(NTTYDISC)
if (ioctl(f, TIOCGETD, (ioctl_t) & oldisc) == 0) {
if (oldisc != NTTYDISC) {
int ldisc = NTTYDISC;
if (ioctl(f, TIOCSETD, (ioctl_t) & ldisc) != 0)
return (-1);
add_discipline = 1;
}
else
oldisc = -1;
return (0);
}
else
return (-1);
# else
USE(f);
return (0);
# endif /* TIOCGETD && NTTYDISC */
#endif /* !HAVE_DISC */
} /* end setdisc */
int
/*ARGSUSED*/
resetdisc(int f)
{
if (add_discipline) {
add_discipline = 0;
#if defined(OREO) || defined(IRIS4D)
return (ioctl(f, TCSETAF, (ioctl_t) & otermiob));
#endif /* OREO || IRIS4D */
#ifdef _IBMR2
return (ioctl(f, TXDELCD, (ioctl_t) strPOSIX));
#endif /* _IBMR2 */
#ifndef HAVE_DISC
# if defined(TIOCSETD) && defined(NTTYDISC)
return (ioctl(f, TIOCSETD, (ioctl_t) & oldisc));
# endif /* TIOCSETD && NTTYDISC */
#endif /* !HAVE_DISC */
}
USE(f);
return (0);
} /* end resetdisc */
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