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 * $FreeBSD: src/lib/libc/gen/termios.c,v 1.9.2.1 2000/03/18 23:13:25 jasone Exp $ 34 * $DragonFly: src/lib/libc/gen/termios.c,v 1.3 2005/01/31 22:29:15 dillon Exp $ 35 * 36 * @(#)termios.c 8.2 (Berkeley) 2/21/94 37 */ 38 39 #include "namespace.h" 40 #include <sys/types.h> 41 #include <sys/fcntl.h> 42 #include <sys/ioctl.h> 43 #include <sys/time.h> 44 45 #include <errno.h> 46 #include <termios.h> 47 #include <unistd.h> 48 #include "un-namespace.h" 49 50 int 51 tcgetattr(fd, t) 52 int fd; 53 struct termios *t; 54 { 55 56 return (_ioctl(fd, TIOCGETA, t)); 57 } 58 59 int 60 tcsetattr(fd, opt, t) 61 int fd, opt; 62 const struct termios *t; 63 { 64 struct termios localterm; 65 66 if (opt & TCSASOFT) { 67 localterm = *t; 68 localterm.c_cflag |= CIGNORE; 69 t = &localterm; 70 } 71 switch (opt & ~TCSASOFT) { 72 case TCSANOW: 73 return (_ioctl(fd, TIOCSETA, t)); 74 case TCSADRAIN: 75 return (_ioctl(fd, TIOCSETAW, t)); 76 case TCSAFLUSH: 77 return (_ioctl(fd, TIOCSETAF, t)); 78 default: 79 errno = EINVAL; 80 return (-1); 81 } 82 } 83 84 int 85 #if __STDC__ 86 tcsetpgrp(int fd, pid_t pgrp) 87 #else 88 tcsetpgrp(fd, pgrp) 89 int fd; 90 pid_t pgrp; 91 #endif 92 { 93 int s; 94 95 s = pgrp; 96 return (_ioctl(fd, TIOCSPGRP, &s)); 97 } 98 99 pid_t 100 tcgetpgrp(fd) 101 int 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 &= ~(IMAXBEL|IXOFF|INPCK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON|IGNPAR); 167 t->c_iflag |= IGNBRK; 168 t->c_oflag &= ~OPOST; 169 t->c_lflag &= ~(ECHO|ECHOE|ECHOK|ECHONL|ICANON|ISIG|IEXTEN|NOFLSH|TOSTOP|PENDIN); 170 t->c_cflag &= ~(CSIZE|PARENB); 171 t->c_cflag |= CS8|CREAD; 172 t->c_cc[VMIN] = 1; 173 t->c_cc[VTIME] = 0; 174 } 175 176 int 177 tcsendbreak(fd, len) 178 int fd, len; 179 { 180 struct timeval sleepytime; 181 182 sleepytime.tv_sec = 0; 183 sleepytime.tv_usec = 400000; 184 if (_ioctl(fd, TIOCSBRK, 0) == -1) 185 return (-1); 186 (void)_select(0, 0, 0, 0, &sleepytime); 187 if (_ioctl(fd, TIOCCBRK, 0) == -1) 188 return (-1); 189 return (0); 190 } 191 192 int 193 __tcdrain(fd) 194 int fd; 195 { 196 return (_ioctl(fd, TIOCDRAIN, 0)); 197 } 198 199 #ifndef _THREAD_SAFE 200 __weak_reference(__tcdrain, tcdrain); 201 #endif 202 203 int 204 tcflush(fd, which) 205 int fd, which; 206 { 207 int com; 208 209 switch (which) { 210 case TCIFLUSH: 211 com = FREAD; 212 break; 213 case TCOFLUSH: 214 com = FWRITE; 215 break; 216 case TCIOFLUSH: 217 com = FREAD | FWRITE; 218 break; 219 default: 220 errno = EINVAL; 221 return (-1); 222 } 223 return (_ioctl(fd, TIOCFLUSH, &com)); 224 } 225 226 int 227 tcflow(fd, action) 228 int fd, action; 229 { 230 struct termios term; 231 u_char c; 232 233 switch (action) { 234 case TCOOFF: 235 return (_ioctl(fd, TIOCSTOP, 0)); 236 case TCOON: 237 return (_ioctl(fd, TIOCSTART, 0)); 238 case TCION: 239 case TCIOFF: 240 if (tcgetattr(fd, &term) == -1) 241 return (-1); 242 c = term.c_cc[action == TCIOFF ? VSTOP : VSTART]; 243 if (c != _POSIX_VDISABLE && _write(fd, &c, sizeof(c)) == -1) 244 return (-1); 245 return (0); 246 default: 247 errno = EINVAL; 248 return (-1); 249 } 250 /* NOTREACHED */ 251 } 252