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 pid_t 103 tcgetsid(int fd) 104 { 105 int s; 106 107 if (_ioctl(fd, TIOCGSID, &s) < 0) 108 return ((pid_t)-1); 109 110 return ((pid_t)s); 111 } 112 113 int 114 tcsetsid(int fd, pid_t pid) 115 { 116 117 if (pid != getsid(0)) { 118 errno = EINVAL; 119 return (-1); 120 } 121 122 return (_ioctl(fd, TIOCSCTTY, NULL)); 123 } 124 125 speed_t 126 cfgetospeed(t) 127 const struct termios *t; 128 { 129 130 return (t->c_ospeed); 131 } 132 133 speed_t 134 cfgetispeed(t) 135 const struct termios *t; 136 { 137 138 return (t->c_ispeed); 139 } 140 141 int 142 cfsetospeed(t, speed) 143 struct termios *t; 144 speed_t speed; 145 { 146 147 t->c_ospeed = speed; 148 return (0); 149 } 150 151 int 152 cfsetispeed(t, speed) 153 struct termios *t; 154 speed_t speed; 155 { 156 157 t->c_ispeed = speed; 158 return (0); 159 } 160 161 int 162 cfsetspeed(t, speed) 163 struct termios *t; 164 speed_t speed; 165 { 166 167 t->c_ispeed = t->c_ospeed = speed; 168 return (0); 169 } 170 171 /* 172 * Make a pre-existing termios structure into "raw" mode: character-at-a-time 173 * mode with no characters interpreted, 8-bit data path. 174 */ 175 void 176 cfmakeraw(t) 177 struct termios *t; 178 { 179 180 t->c_iflag &= ~(IMAXBEL|IXOFF|INPCK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON|IGNPAR); 181 t->c_iflag |= IGNBRK; 182 t->c_oflag &= ~OPOST; 183 t->c_lflag &= ~(ECHO|ECHOE|ECHOK|ECHONL|ICANON|ISIG|IEXTEN|NOFLSH|TOSTOP|PENDIN); 184 t->c_cflag &= ~(CSIZE|PARENB); 185 t->c_cflag |= CS8|CREAD; 186 t->c_cc[VMIN] = 1; 187 t->c_cc[VTIME] = 0; 188 } 189 190 int 191 tcsendbreak(fd, len) 192 int fd, len; 193 { 194 struct timeval sleepytime; 195 196 sleepytime.tv_sec = 0; 197 sleepytime.tv_usec = 400000; 198 if (_ioctl(fd, TIOCSBRK, 0) == -1) 199 return (-1); 200 (void)_select(0, 0, 0, 0, &sleepytime); 201 if (_ioctl(fd, TIOCCBRK, 0) == -1) 202 return (-1); 203 return (0); 204 } 205 206 int 207 __tcdrain(fd) 208 int fd; 209 { 210 return (_ioctl(fd, TIOCDRAIN, 0)); 211 } 212 213 __weak_reference(__tcdrain, tcdrain); 214 __weak_reference(__tcdrain, _tcdrain); 215 216 int 217 tcflush(fd, which) 218 int fd, which; 219 { 220 int com; 221 222 switch (which) { 223 case TCIFLUSH: 224 com = FREAD; 225 break; 226 case TCOFLUSH: 227 com = FWRITE; 228 break; 229 case TCIOFLUSH: 230 com = FREAD | FWRITE; 231 break; 232 default: 233 errno = EINVAL; 234 return (-1); 235 } 236 return (_ioctl(fd, TIOCFLUSH, &com)); 237 } 238 239 int 240 tcflow(fd, action) 241 int fd, action; 242 { 243 struct termios term; 244 u_char c; 245 246 switch (action) { 247 case TCOOFF: 248 return (_ioctl(fd, TIOCSTOP, 0)); 249 case TCOON: 250 return (_ioctl(fd, TIOCSTART, 0)); 251 case TCION: 252 case TCIOFF: 253 if (tcgetattr(fd, &term) == -1) 254 return (-1); 255 c = term.c_cc[action == TCIOFF ? VSTOP : VSTART]; 256 if (c != _POSIX_VDISABLE && _write(fd, &c, sizeof(c)) == -1) 257 return (-1); 258 return (0); 259 default: 260 errno = EINVAL; 261 return (-1); 262 } 263 /* NOTREACHED */ 264 } 265