1 /* $NetBSD: ttcompat.c,v 1.10 1997/10/05 15:12:16 mrg Exp $ */ 2 /* 3 * Copyright (c) 1995 4 * The Regents of the University of California. All rights reserved. 5 * 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 /* 37 * ttcompat.c -- convert sgtty flags to termios 38 * originally from /sys/kern/tty_compat.c 39 */ 40 41 #include <sys/param.h> 42 #include <sys/types.h> 43 44 #include <unistd.h> 45 #include <sys/ioctl_compat.h> 46 #include <termios.h> 47 #include <syslog.h> 48 #include <fcntl.h> 49 #include <dirent.h> 50 #include <errno.h> 51 #include <stdio.h> 52 #include <string.h> 53 #include <stdlib.h> 54 #include "extern.h" 55 56 /* Macros to clear/set/test flags. */ 57 #define SET(t, f) (t) |= (f) 58 #define CLR(t, f) (t) &= ~(f) 59 #define ISSET(t, f) ((t) & (f)) 60 61 static int sttygetoflags __P((struct termios *)); 62 static void sttysetoflags __P((struct termios *, int)); 63 64 static int 65 sttygetoflags(tp) 66 struct termios *tp; 67 { 68 tcflag_t iflag = tp->c_iflag; 69 tcflag_t lflag = tp->c_lflag; 70 tcflag_t oflag = tp->c_oflag; 71 tcflag_t cflag = tp->c_cflag; 72 int flags = 0; 73 74 if (ISSET(cflag, PARENB)) { 75 if (ISSET(iflag, INPCK)) { 76 if (ISSET(cflag, PARODD)) 77 SET(flags, ODDP); 78 else 79 SET(flags, EVENP); 80 } else 81 SET(flags, EVENP|ODDP); 82 } 83 if (ISSET(cflag, CSIZE) == CS8) { 84 if (!ISSET(iflag, ISTRIP)) 85 SET(flags, PASS8); 86 if (!ISSET(oflag, OPOST)) 87 SET(flags, LITOUT); 88 } 89 90 if (!ISSET(lflag, ICANON)) { 91 /* fudge */ 92 if (ISSET(iflag, IXON) || ISSET(lflag, ISIG|IEXTEN) || 93 ISSET(cflag, PARENB)) 94 SET(flags, CBREAK); 95 else 96 SET(flags, RAW); 97 } 98 99 return (flags); 100 } 101 102 static void 103 sttysetoflags(tp, flags) 104 struct termios *tp; 105 int flags; 106 { 107 tcflag_t iflag = tp->c_iflag; 108 tcflag_t oflag = tp->c_oflag; 109 tcflag_t lflag = tp->c_lflag; 110 tcflag_t cflag = tp->c_cflag; 111 112 if (ISSET(flags, RAW)) { 113 iflag &= IXOFF; 114 CLR(lflag, ISIG|ICANON|IEXTEN); 115 CLR(cflag, PARENB); 116 } else { 117 SET(iflag, BRKINT|IXON|IMAXBEL); 118 SET(lflag, ISIG|IEXTEN); 119 if (ISSET(flags, CBREAK)) 120 CLR(lflag, ICANON); 121 else 122 SET(lflag, ICANON); 123 switch (ISSET(flags, ANYP)) { 124 case 0: 125 CLR(cflag, PARENB); 126 break; 127 case ANYP: 128 SET(cflag, PARENB); 129 CLR(iflag, INPCK); 130 break; 131 case EVENP: 132 SET(cflag, PARENB); 133 SET(iflag, INPCK); 134 CLR(cflag, PARODD); 135 break; 136 case ODDP: 137 SET(cflag, PARENB); 138 SET(iflag, INPCK); 139 SET(cflag, PARODD); 140 break; 141 } 142 } 143 144 if (ISSET(flags, RAW|LITOUT|PASS8)) { 145 CLR(cflag, CSIZE); 146 SET(cflag, CS8); 147 if (!ISSET(flags, RAW|PASS8)) 148 SET(iflag, ISTRIP); 149 else 150 CLR(iflag, ISTRIP); 151 if (!ISSET(flags, RAW|LITOUT)) 152 SET(oflag, OPOST); 153 else 154 CLR(oflag, OPOST); 155 } else { 156 CLR(cflag, CSIZE); 157 SET(cflag, CS7); 158 SET(iflag, ISTRIP); 159 SET(oflag, OPOST); 160 } 161 162 tp->c_iflag = iflag; 163 tp->c_oflag = oflag; 164 tp->c_lflag = lflag; 165 tp->c_cflag = cflag; 166 } 167 168 void 169 sttyclearflags(tp, flags) 170 struct termios *tp; 171 int flags; 172 { 173 tcflag_t iflag = tp->c_iflag; 174 tcflag_t oflag = tp->c_oflag; 175 tcflag_t lflag = tp->c_lflag; 176 tcflag_t cflag = tp->c_cflag; 177 int oflags = sttygetoflags(tp) & ~flags; 178 179 if (ISSET(flags, TANDEM)) 180 CLR(iflag, IXOFF); 181 if (ISSET(flags, ECHO)) 182 CLR(lflag, ECHO); 183 if (ISSET(flags, CRMOD)) { 184 CLR(iflag, ICRNL); 185 CLR(oflag, ONLCR); 186 } 187 if (ISSET(flags, XTABS)) 188 CLR(oflag, OXTABS); 189 190 191 tp->c_iflag = iflag; 192 tp->c_oflag = oflag; 193 tp->c_lflag = lflag; 194 tp->c_cflag = cflag; 195 196 sttysetoflags(tp, oflags); 197 } 198 199 void 200 sttysetflags(tp, flags) 201 struct termios *tp; 202 int flags; 203 { 204 tcflag_t iflag = tp->c_iflag; 205 tcflag_t oflag = tp->c_oflag; 206 tcflag_t lflag = tp->c_lflag; 207 tcflag_t cflag = tp->c_cflag; 208 int oflags = sttygetoflags(tp) | flags; 209 210 if (ISSET(flags, TANDEM)) 211 SET(iflag, IXOFF); 212 if (ISSET(flags, ECHO)) 213 SET(lflag, ECHO); 214 if (ISSET(flags, CRMOD)) { 215 SET(iflag, ICRNL); 216 SET(oflag, ONLCR); 217 } 218 if (ISSET(flags, XTABS)) 219 SET(oflag, OXTABS); 220 221 tp->c_iflag = iflag; 222 tp->c_oflag = oflag; 223 tp->c_lflag = lflag; 224 tp->c_cflag = cflag; 225 226 sttysetoflags(tp, oflags); 227 } 228 229 void 230 sttyclearlflags(tp, flags) 231 struct termios *tp; 232 int flags; 233 { 234 tcflag_t iflag = tp->c_iflag; 235 tcflag_t oflag = tp->c_oflag; 236 tcflag_t lflag = tp->c_lflag; 237 tcflag_t cflag = tp->c_cflag; 238 int oflags = sttygetoflags(tp) & ~flags; 239 240 /* Nothing we can do with CRTBS. */ 241 if (ISSET(flags, PRTERA)) 242 CLR(lflag, ECHOPRT); 243 if (ISSET(flags, CRTERA)) 244 CLR(lflag, ECHOE); 245 /* Nothing we can do with TILDE. */ 246 if (ISSET(flags, MDMBUF)) 247 CLR(cflag, MDMBUF); 248 if (ISSET(flags, NOHANG)) 249 SET(cflag, HUPCL); 250 if (ISSET(flags, CRTKIL)) 251 CLR(lflag, ECHOKE); 252 if (ISSET(flags, CTLECH)) 253 CLR(lflag, ECHOCTL); 254 if (ISSET(flags, DECCTQ)) 255 SET(iflag, IXANY); 256 CLR(lflag, ISSET(flags, TOSTOP|FLUSHO|PENDIN|NOFLSH)); 257 258 tp->c_iflag = iflag; 259 tp->c_oflag = oflag; 260 tp->c_lflag = lflag; 261 tp->c_cflag = cflag; 262 263 sttysetoflags(tp, oflags); 264 } 265 266 void 267 sttysetlflags(tp, flags) 268 struct termios *tp; 269 int flags; 270 { 271 tcflag_t iflag = tp->c_iflag; 272 tcflag_t oflag = tp->c_oflag; 273 tcflag_t lflag = tp->c_lflag; 274 tcflag_t cflag = tp->c_cflag; 275 int oflags = sttygetoflags(tp) | flags; 276 277 /* Nothing we can do with CRTBS. */ 278 if (ISSET(flags, PRTERA)) 279 SET(lflag, ECHOPRT); 280 if (ISSET(flags, CRTERA)) 281 SET(lflag, ECHOE); 282 /* Nothing we can do with TILDE. */ 283 if (ISSET(flags, MDMBUF)) 284 SET(cflag, MDMBUF); 285 if (ISSET(flags, NOHANG)) 286 CLR(cflag, HUPCL); 287 if (ISSET(flags, CRTKIL)) 288 SET(lflag, ECHOKE); 289 if (ISSET(flags, CTLECH)) 290 SET(lflag, ECHOCTL); 291 if (ISSET(flags, DECCTQ)) 292 CLR(iflag, IXANY); 293 SET(lflag, ISSET(flags, TOSTOP|FLUSHO|PENDIN|NOFLSH)); 294 295 tp->c_iflag = iflag; 296 tp->c_oflag = oflag; 297 tp->c_lflag = lflag; 298 tp->c_cflag = cflag; 299 300 sttysetoflags(tp, oflags); 301 } 302