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