1 /* $Header: /src/pub/tcsh/tc.disc.c,v 3.11 1997/10/02 16:36:31 christos Exp $ */ 2 /* 3 * tc.disc.c: Functions to set/clear line disciplines 4 * 5 */ 6 /*- 7 * Copyright (c) 1980, 1991 The Regents of the University of California. 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 #include "sh.h" 39 40 RCSID("$Id: tc.disc.c,v 3.11 1997/10/02 16:36:31 christos Exp $") 41 42 #ifdef OREO 43 #include <compat.h> 44 #endif /* OREO */ 45 46 #include "ed.term.h" 47 48 static bool add_discipline = 0; /* Did we add a line discipline */ 49 50 #if defined(IRIS4D) || defined(OREO) || defined(sonyrisc) 51 # define HAVE_DISC 52 # ifndef POSIX 53 static struct termio otermiob; 54 # else 55 static struct termios otermiob; 56 # endif /* POSIX */ 57 #endif /* IRIS4D || OREO */ 58 59 #ifdef _IBMR2 60 # define HAVE_DISC 61 char strPOSIX[] = "posix"; 62 #endif /* _IBMR2 */ 63 64 #if !defined(HAVE_DISC) && defined(TIOCGETD) && defined(NTTYDISC) 65 static int oldisc; 66 #endif /* !HAVE_DISC && TIOCGETD && NTTYDISC */ 67 68 int 69 /*ARGSUSED*/ 70 setdisc(f) 71 int f; 72 { 73 #ifdef IRIS4D 74 # ifndef POSIX 75 struct termio termiob; 76 # else 77 struct termios termiob; 78 # endif 79 80 if (ioctl(f, TCGETA, (ioctl_t) & termiob) == 0) { 81 otermiob = termiob; 82 #if (SYSVREL < 4) || !defined(IRIS4D) 83 if (termiob.c_line != NTTYDISC || termiob.c_cc[VSWTCH] == 0) { /*}*/ 84 termiob.c_line = NTTYDISC; 85 #else 86 if (termiob.c_cc[VSWTCH] == 0) { 87 #endif 88 termiob.c_cc[VSWTCH] = CSWTCH; 89 if (ioctl(f, TCSETA, (ioctl_t) & termiob) != 0) 90 return (-1); 91 } 92 } 93 else 94 return (-1); 95 add_discipline = 1; 96 return (0); 97 #endif /* IRIS4D */ 98 99 100 #ifdef OREO 101 # ifndef POSIX 102 struct termio termiob; 103 # else 104 struct termios termiob; 105 # endif 106 107 struct ltchars ltcbuf; 108 109 if (ioctl(f, TCGETA, (ioctl_t) & termiob) == 0) { 110 int comp = getcompat(COMPAT_BSDTTY); 111 otermiob = termiob; 112 if ((comp & COMPAT_BSDTTY) != COMPAT_BSDTTY) { 113 (void) setcompat(comp | COMPAT_BSDTTY); 114 if (ioctl(f, TIOCGLTC, (ioctl_t) & ltcbuf) != 0) 115 xprintf(CGETS(21, 1, "Couldn't get local chars.\n")); 116 else { 117 ltcbuf.t_suspc = CTL_ESC('\032'); /* ^Z */ 118 ltcbuf.t_dsuspc = CTL_ESC('\031'); /* ^Y */ 119 ltcbuf.t_rprntc = CTL_ESC('\022'); /* ^R */ 120 ltcbuf.t_flushc = CTL_ESC('\017'); /* ^O */ 121 ltcbuf.t_werasc = CTL_ESC('\027'); /* ^W */ 122 ltcbuf.t_lnextc = CTL_ESC('\026'); /* ^V */ 123 if (ioctl(f, TIOCSLTC, (ioctl_t) & ltcbuf) != 0) 124 xprintf(CGETS(21, 2, "Couldn't set local chars.\n")); 125 } 126 termiob.c_cc[VSWTCH] = '\0'; 127 if (ioctl(f, TCSETAF, (ioctl_t) & termiob) != 0) 128 return (-1); 129 } 130 } 131 else 132 return (-1); 133 add_discipline = 1; 134 return (0); 135 #endif /* OREO */ 136 137 138 #ifdef _IBMR2 139 union txname tx; 140 141 tx.tx_which = 0; 142 143 if (ioctl(f, TXGETLD, (ioctl_t) & tx) == 0) { 144 if (strcmp(tx.tx_name, strPOSIX) != 0) 145 if (ioctl(f, TXADDCD, (ioctl_t) strPOSIX) == 0) { 146 add_discipline = 1; 147 return (0); 148 } 149 return (0); 150 } 151 else 152 return (-1); 153 #endif /* _IBMR2 */ 154 155 #ifndef HAVE_DISC 156 # if defined(TIOCGETD) && defined(NTTYDISC) 157 if (ioctl(f, TIOCGETD, (ioctl_t) & oldisc) == 0) { 158 if (oldisc != NTTYDISC) { 159 int ldisc = NTTYDISC; 160 161 if (ioctl(f, TIOCSETD, (ioctl_t) & ldisc) != 0) 162 return (-1); 163 add_discipline = 1; 164 } 165 else 166 oldisc = -1; 167 return (0); 168 } 169 else 170 return (-1); 171 # else 172 return (0); 173 # endif /* TIOCGETD && NTTYDISC */ 174 #endif /* !HAVE_DISC */ 175 } /* end setdisc */ 176 177 178 int 179 /*ARGSUSED*/ 180 resetdisc(f) 181 int f; 182 { 183 if (add_discipline) { 184 add_discipline = 0; 185 #if defined(OREO) || defined(IRIS4D) 186 return (ioctl(f, TCSETAF, (ioctl_t) & otermiob)); 187 #endif /* OREO || IRIS4D */ 188 189 #ifdef _IBMR2 190 return (ioctl(f, TXDELCD, (ioctl_t) strPOSIX)); 191 #endif /* _IBMR2 */ 192 193 #ifndef HAVE_DISC 194 # if defined(TIOCSETD) && defined(NTTYDISC) 195 return (ioctl(f, TIOCSETD, (ioctl_t) & oldisc)); 196 # endif /* TIOCSETD && NTTYDISC */ 197 #endif /* !HAVE_DISC */ 198 } 199 return (0); 200 } /* end resetdisc */ 201