1 /*- 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #if defined(LIBC_SCCS) && !defined(lint) 35 static char sccsid[] = "@(#)termios.c 8.2 (Berkeley) 2/21/94"; 36 #endif /* LIBC_SCCS and not lint */ 37 38 #include <sys/types.h> 39 #include <sys/ioctl.h> 40 #include <sys/tty.h> 41 #include <sys/time.h> 42 #define KERNEL /* XXX - FREAD and FWRITE ifdef'd KERNEL*/ 43 #include <sys/fcntl.h> 44 #undef KERNEL 45 46 #include <errno.h> 47 #include <stdio.h> 48 #include <termios.h> 49 #include <unistd.h> 50 51 int 52 tcgetattr(fd, t) 53 int fd; 54 struct termios *t; 55 { 56 57 return (ioctl(fd, TIOCGETA, t)); 58 } 59 60 int 61 tcsetattr(fd, opt, t) 62 int fd, opt; 63 const struct termios *t; 64 { 65 struct termios localterm; 66 67 if (opt & TCSASOFT) { 68 localterm = *t; 69 localterm.c_cflag |= CIGNORE; 70 t = &localterm; 71 } 72 switch (opt & ~TCSASOFT) { 73 case TCSANOW: 74 return (ioctl(fd, TIOCSETA, t)); 75 case TCSADRAIN: 76 return (ioctl(fd, TIOCSETAW, t)); 77 case TCSAFLUSH: 78 return (ioctl(fd, TIOCSETAF, t)); 79 default: 80 errno = EINVAL; 81 return (-1); 82 } 83 } 84 85 int 86 #if __STDC__ 87 tcsetpgrp(int fd, pid_t pgrp) 88 #else 89 tcsetpgrp(fd, pgrp) 90 int fd; 91 pid_t pgrp; 92 #endif 93 { 94 int s; 95 96 s = pgrp; 97 return (ioctl(fd, TIOCSPGRP, &s)); 98 } 99 100 pid_t 101 tcgetpgrp(fd) 102 { 103 int s; 104 105 if (ioctl(fd, TIOCGPGRP, &s) < 0) 106 return ((pid_t)-1); 107 108 return ((pid_t)s); 109 } 110 111 speed_t 112 cfgetospeed(t) 113 const struct termios *t; 114 { 115 116 return (t->c_ospeed); 117 } 118 119 speed_t 120 cfgetispeed(t) 121 const struct termios *t; 122 { 123 124 return (t->c_ispeed); 125 } 126 127 int 128 cfsetospeed(t, speed) 129 struct termios *t; 130 speed_t speed; 131 { 132 133 t->c_ospeed = speed; 134 return (0); 135 } 136 137 int 138 cfsetispeed(t, speed) 139 struct termios *t; 140 speed_t speed; 141 { 142 143 t->c_ispeed = speed; 144 return (0); 145 } 146 147 int 148 cfsetspeed(t, speed) 149 struct termios *t; 150 speed_t speed; 151 { 152 153 t->c_ispeed = t->c_ospeed = speed; 154 return (0); 155 } 156 157 /* 158 * Make a pre-existing termios structure into "raw" mode: character-at-a-time 159 * mode with no characters interpreted, 8-bit data path. 160 */ 161 void 162 cfmakeraw(t) 163 struct termios *t; 164 { 165 166 t->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON); 167 t->c_oflag &= ~OPOST; 168 t->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN); 169 t->c_cflag &= ~(CSIZE|PARENB); 170 t->c_cflag |= CS8; 171 /* XXX set MIN/TIME */ 172 } 173 174 tcsendbreak(fd, len) 175 int fd, len; 176 { 177 struct timeval sleepytime; 178 179 sleepytime.tv_sec = 0; 180 sleepytime.tv_usec = 400000; 181 if (ioctl(fd, TIOCSBRK, 0) == -1) 182 return (-1); 183 (void)select(0, 0, 0, 0, &sleepytime); 184 if (ioctl(fd, TIOCCBRK, 0) == -1) 185 return (-1); 186 return (0); 187 } 188 189 tcdrain(fd) 190 int fd; 191 { 192 193 return (ioctl(fd, TIOCDRAIN, 0)); 194 } 195 196 tcflush(fd, which) 197 int fd, which; 198 { 199 int com; 200 201 switch (which) { 202 case TCIFLUSH: 203 com = FREAD; 204 break; 205 case TCOFLUSH: 206 com = FWRITE; 207 break; 208 case TCIOFLUSH: 209 com = FREAD | FWRITE; 210 break; 211 default: 212 errno = EINVAL; 213 return (-1); 214 } 215 return (ioctl(fd, TIOCFLUSH, &com)); 216 } 217 218 tcflow(fd, action) 219 int fd, action; 220 { 221 struct termios term; 222 u_char c; 223 224 switch (action) { 225 case TCOOFF: 226 return (ioctl(fd, TIOCSTOP, 0)); 227 case TCOON: 228 return (ioctl(fd, TIOCSTART, 0)); 229 case TCION: 230 case TCIOFF: 231 if (tcgetattr(fd, &term) == -1) 232 return (-1); 233 c = term.c_cc[action == TCIOFF ? VSTOP : VSTART]; 234 if (c != _POSIX_VDISABLE && write(fd, &c, sizeof(c)) == -1) 235 return (-1); 236 return (0); 237 default: 238 errno = EINVAL; 239 return (-1); 240 } 241 /* NOTREACHED */ 242 } 243