1 /* $Header: /src/pub/tcsh/tc.disc.c,v 3.15 2004/11/23 02:10:49 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 #include "sh.h" 35 36 RCSID("$Id: tc.disc.c,v 3.15 2004/11/23 02:10:49 christos Exp $") 37 38 #ifdef OREO 39 #include <compat.h> 40 #endif /* OREO */ 41 42 #include "ed.h" 43 44 static int add_discipline = 0; /* Did we add a line discipline */ 45 46 #if defined(IRIS4D) || defined(OREO) || defined(sonyrisc) 47 # define HAVE_DISC 48 # ifndef POSIX 49 static struct termio otermiob; 50 # else 51 static struct termios otermiob; 52 # endif /* POSIX */ 53 #endif /* IRIS4D || OREO */ 54 55 #ifdef _IBMR2 56 # define HAVE_DISC 57 char strPOSIX[] = "posix"; 58 #endif /* _IBMR2 */ 59 60 #if !defined(HAVE_DISC) && defined(TIOCGETD) && defined(NTTYDISC) 61 static int oldisc; 62 #endif /* !HAVE_DISC && TIOCGETD && NTTYDISC */ 63 64 int 65 /*ARGSUSED*/ 66 setdisc(f) 67 int f; 68 { 69 #ifdef IRIS4D 70 # ifndef POSIX 71 struct termio termiob; 72 # else 73 struct termios termiob; 74 # endif 75 76 if (ioctl(f, TCGETA, (ioctl_t) & termiob) == 0) { 77 otermiob = termiob; 78 #if (SYSVREL < 4) || !defined(IRIS4D) 79 if (termiob.c_line != NTTYDISC || termiob.c_cc[VSWTCH] == 0) { /*}*/ 80 termiob.c_line = NTTYDISC; 81 #else 82 if (termiob.c_cc[VSWTCH] == 0) { 83 #endif 84 termiob.c_cc[VSWTCH] = CSWTCH; 85 if (ioctl(f, TCSETA, (ioctl_t) & termiob) != 0) 86 return (-1); 87 } 88 } 89 else 90 return (-1); 91 add_discipline = 1; 92 return (0); 93 #endif /* IRIS4D */ 94 95 96 #ifdef OREO 97 # ifndef POSIX 98 struct termio termiob; 99 # else 100 struct termios termiob; 101 # endif 102 103 struct ltchars ltcbuf; 104 105 if (ioctl(f, TCGETA, (ioctl_t) & termiob) == 0) { 106 int comp = getcompat(COMPAT_BSDTTY); 107 otermiob = termiob; 108 if ((comp & COMPAT_BSDTTY) != COMPAT_BSDTTY) { 109 (void) setcompat(comp | COMPAT_BSDTTY); 110 if (ioctl(f, TIOCGLTC, (ioctl_t) & ltcbuf) != 0) 111 xprintf(CGETS(21, 1, "Couldn't get local chars.\n")); 112 else { 113 ltcbuf.t_suspc = CTL_ESC('\032'); /* ^Z */ 114 ltcbuf.t_dsuspc = CTL_ESC('\031'); /* ^Y */ 115 ltcbuf.t_rprntc = CTL_ESC('\022'); /* ^R */ 116 ltcbuf.t_flushc = CTL_ESC('\017'); /* ^O */ 117 ltcbuf.t_werasc = CTL_ESC('\027'); /* ^W */ 118 ltcbuf.t_lnextc = CTL_ESC('\026'); /* ^V */ 119 if (ioctl(f, TIOCSLTC, (ioctl_t) & ltcbuf) != 0) 120 xprintf(CGETS(21, 2, "Couldn't set local chars.\n")); 121 } 122 termiob.c_cc[VSWTCH] = '\0'; 123 if (ioctl(f, TCSETAF, (ioctl_t) & termiob) != 0) 124 return (-1); 125 } 126 } 127 else 128 return (-1); 129 add_discipline = 1; 130 return (0); 131 #endif /* OREO */ 132 133 134 #ifdef _IBMR2 135 union txname tx; 136 137 tx.tx_which = 0; 138 139 if (ioctl(f, TXGETLD, (ioctl_t) & tx) == 0) { 140 if (strcmp(tx.tx_name, strPOSIX) != 0) 141 if (ioctl(f, TXADDCD, (ioctl_t) strPOSIX) == 0) { 142 add_discipline = 1; 143 return (0); 144 } 145 return (0); 146 } 147 else 148 return (-1); 149 #endif /* _IBMR2 */ 150 151 #ifndef HAVE_DISC 152 # if defined(TIOCGETD) && defined(NTTYDISC) 153 if (ioctl(f, TIOCGETD, (ioctl_t) & oldisc) == 0) { 154 if (oldisc != NTTYDISC) { 155 int ldisc = NTTYDISC; 156 157 if (ioctl(f, TIOCSETD, (ioctl_t) & ldisc) != 0) 158 return (-1); 159 add_discipline = 1; 160 } 161 else 162 oldisc = -1; 163 return (0); 164 } 165 else 166 return (-1); 167 # else 168 USE(f); 169 return (0); 170 # endif /* TIOCGETD && NTTYDISC */ 171 #endif /* !HAVE_DISC */ 172 } /* end setdisc */ 173 174 175 int 176 /*ARGSUSED*/ 177 resetdisc(f) 178 int f; 179 { 180 if (add_discipline) { 181 add_discipline = 0; 182 #if defined(OREO) || defined(IRIS4D) 183 return (ioctl(f, TCSETAF, (ioctl_t) & otermiob)); 184 #endif /* OREO || IRIS4D */ 185 186 #ifdef _IBMR2 187 return (ioctl(f, TXDELCD, (ioctl_t) strPOSIX)); 188 #endif /* _IBMR2 */ 189 190 #ifndef HAVE_DISC 191 # if defined(TIOCSETD) && defined(NTTYDISC) 192 return (ioctl(f, TIOCSETD, (ioctl_t) & oldisc)); 193 # endif /* TIOCSETD && NTTYDISC */ 194 #endif /* !HAVE_DISC */ 195 } 196 USE(f); 197 return (0); 198 } /* end resetdisc */ 199