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 * $FreeBSD$ 34 */ 35 36 #if defined(LIBC_SCCS) && !defined(lint) 37 static char sccsid[] = "@(#)termios.c 8.2 (Berkeley) 2/21/94"; 38 #endif /* LIBC_SCCS and not lint */ 39 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 49 int 50 tcgetattr(fd, t) 51 int fd; 52 struct termios *t; 53 { 54 55 return (ioctl(fd, TIOCGETA, t)); 56 } 57 58 int 59 tcsetattr(fd, opt, t) 60 int fd, opt; 61 const struct termios *t; 62 { 63 struct termios localterm; 64 65 if (opt & TCSASOFT) { 66 localterm = *t; 67 localterm.c_cflag |= CIGNORE; 68 t = &localterm; 69 } 70 switch (opt & ~TCSASOFT) { 71 case TCSANOW: 72 return (ioctl(fd, TIOCSETA, t)); 73 case TCSADRAIN: 74 return (ioctl(fd, TIOCSETAW, t)); 75 case TCSAFLUSH: 76 return (ioctl(fd, TIOCSETAF, t)); 77 default: 78 errno = EINVAL; 79 return (-1); 80 } 81 } 82 83 int 84 #if __STDC__ 85 tcsetpgrp(int fd, pid_t pgrp) 86 #else 87 tcsetpgrp(fd, pgrp) 88 int fd; 89 pid_t pgrp; 90 #endif 91 { 92 int s; 93 94 s = pgrp; 95 return (ioctl(fd, TIOCSPGRP, &s)); 96 } 97 98 pid_t 99 tcgetpgrp(fd) 100 int fd; 101 { 102 int s; 103 104 if (ioctl(fd, TIOCGPGRP, &s) < 0) 105 return ((pid_t)-1); 106 107 return ((pid_t)s); 108 } 109 110 speed_t 111 cfgetospeed(t) 112 const struct termios *t; 113 { 114 115 return (t->c_ospeed); 116 } 117 118 speed_t 119 cfgetispeed(t) 120 const struct termios *t; 121 { 122 123 return (t->c_ispeed); 124 } 125 126 int 127 cfsetospeed(t, speed) 128 struct termios *t; 129 speed_t speed; 130 { 131 132 t->c_ospeed = speed; 133 return (0); 134 } 135 136 int 137 cfsetispeed(t, speed) 138 struct termios *t; 139 speed_t speed; 140 { 141 142 t->c_ispeed = speed; 143 return (0); 144 } 145 146 int 147 cfsetspeed(t, speed) 148 struct termios *t; 149 speed_t speed; 150 { 151 152 t->c_ispeed = t->c_ospeed = speed; 153 return (0); 154 } 155 156 /* 157 * Make a pre-existing termios structure into "raw" mode: character-at-a-time 158 * mode with no characters interpreted, 8-bit data path. 159 */ 160 void 161 cfmakeraw(t) 162 struct termios *t; 163 { 164 165 t->c_iflag &= ~(IMAXBEL|IXOFF|INPCK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON|IGNPAR); 166 t->c_iflag |= IGNBRK; 167 t->c_oflag &= ~OPOST; 168 t->c_lflag &= ~(ECHO|ECHOE|ECHOK|ECHONL|ICANON|ISIG|IEXTEN|NOFLSH|TOSTOP|PENDIN); 169 t->c_cflag &= ~(CSIZE|PARENB); 170 t->c_cflag |= CS8|CREAD; 171 t->c_cc[VMIN] = 1; 172 t->c_cc[VTIME] = 0; 173 } 174 175 int 176 tcsendbreak(fd, len) 177 int fd, len; 178 { 179 struct timeval sleepytime; 180 181 sleepytime.tv_sec = 0; 182 sleepytime.tv_usec = 400000; 183 if (ioctl(fd, TIOCSBRK, 0) == -1) 184 return (-1); 185 (void)select(0, 0, 0, 0, &sleepytime); 186 if (ioctl(fd, TIOCCBRK, 0) == -1) 187 return (-1); 188 return (0); 189 } 190 191 int 192 __tcdrain(fd) 193 int fd; 194 { 195 return (ioctl(fd, TIOCDRAIN, 0)); 196 } 197 198 __weak_reference(__tcdrain, tcdrain); 199 200 int 201 tcflush(fd, which) 202 int fd, which; 203 { 204 int com; 205 206 switch (which) { 207 case TCIFLUSH: 208 com = FREAD; 209 break; 210 case TCOFLUSH: 211 com = FWRITE; 212 break; 213 case TCIOFLUSH: 214 com = FREAD | FWRITE; 215 break; 216 default: 217 errno = EINVAL; 218 return (-1); 219 } 220 return (ioctl(fd, TIOCFLUSH, &com)); 221 } 222 223 int 224 tcflow(fd, action) 225 int fd, action; 226 { 227 struct termios term; 228 u_char c; 229 230 switch (action) { 231 case TCOOFF: 232 return (ioctl(fd, TIOCSTOP, 0)); 233 case TCOON: 234 return (ioctl(fd, TIOCSTART, 0)); 235 case TCION: 236 case TCIOFF: 237 if (tcgetattr(fd, &term) == -1) 238 return (-1); 239 c = term.c_cc[action == TCIOFF ? VSTOP : VSTART]; 240 if (c != _POSIX_VDISABLE && _write(fd, &c, sizeof(c)) == -1) 241 return (-1); 242 return (0); 243 default: 244 errno = EINVAL; 245 return (-1); 246 } 247 /* NOTREACHED */ 248 } 249