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(int fd, struct termios *t) 49 { 50 51 return (_ioctl(fd, TIOCGETA, t)); 52 } 53 54 int 55 tcsetattr(int fd, int opt, const struct termios *t) 56 { 57 struct termios localterm; 58 59 if (opt & TCSASOFT) { 60 localterm = *t; 61 localterm.c_cflag |= CIGNORE; 62 t = &localterm; 63 } 64 switch (opt & ~TCSASOFT) { 65 case TCSANOW: 66 return (_ioctl(fd, TIOCSETA, t)); 67 case TCSADRAIN: 68 return (_ioctl(fd, TIOCSETAW, t)); 69 case TCSAFLUSH: 70 return (_ioctl(fd, TIOCSETAF, t)); 71 default: 72 errno = EINVAL; 73 return (-1); 74 } 75 } 76 77 int 78 tcsetpgrp(int fd, pid_t pgrp) 79 { 80 int s; 81 82 s = pgrp; 83 return (_ioctl(fd, TIOCSPGRP, &s)); 84 } 85 86 pid_t 87 tcgetpgrp(int fd) 88 { 89 int s; 90 91 if (_ioctl(fd, TIOCGPGRP, &s) < 0) 92 return ((pid_t)-1); 93 94 return ((pid_t)s); 95 } 96 97 pid_t 98 tcgetsid(int fd) 99 { 100 int s; 101 102 if (_ioctl(fd, TIOCGSID, &s) < 0) 103 return ((pid_t)-1); 104 105 return ((pid_t)s); 106 } 107 108 int 109 tcsetsid(int fd, pid_t pid) 110 { 111 112 if (pid != getsid(0)) { 113 errno = EINVAL; 114 return (-1); 115 } 116 117 return (_ioctl(fd, TIOCSCTTY, NULL)); 118 } 119 120 speed_t 121 cfgetospeed(const struct termios *t) 122 { 123 124 return (t->c_ospeed); 125 } 126 127 speed_t 128 cfgetispeed(const struct termios *t) 129 { 130 131 return (t->c_ispeed); 132 } 133 134 int 135 cfsetospeed(struct termios *t, speed_t speed) 136 { 137 138 t->c_ospeed = speed; 139 return (0); 140 } 141 142 int 143 cfsetispeed(struct termios *t, speed_t speed) 144 { 145 146 t->c_ispeed = speed; 147 return (0); 148 } 149 150 int 151 cfsetspeed(struct termios *t, speed_t speed) 152 { 153 154 t->c_ispeed = t->c_ospeed = speed; 155 return (0); 156 } 157 158 /* 159 * Make a pre-existing termios structure into "raw" mode: character-at-a-time 160 * mode with no characters interpreted, 8-bit data path. 161 */ 162 void 163 cfmakeraw(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(int fd, int len __unused) 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(int fd) 193 { 194 return (_ioctl(fd, TIOCDRAIN, 0)); 195 } 196 197 __weak_reference(__tcdrain, tcdrain); 198 __weak_reference(__tcdrain, _tcdrain); 199 200 int 201 tcflush(int fd, int which) 202 { 203 int com; 204 205 switch (which) { 206 case TCIFLUSH: 207 com = FREAD; 208 break; 209 case TCOFLUSH: 210 com = FWRITE; 211 break; 212 case TCIOFLUSH: 213 com = FREAD | FWRITE; 214 break; 215 default: 216 errno = EINVAL; 217 return (-1); 218 } 219 return (_ioctl(fd, TIOCFLUSH, &com)); 220 } 221 222 int 223 tcflow(int fd, int action) 224 { 225 struct termios term; 226 u_char c; 227 228 switch (action) { 229 case TCOOFF: 230 return (_ioctl(fd, TIOCSTOP, 0)); 231 case TCOON: 232 return (_ioctl(fd, TIOCSTART, 0)); 233 case TCION: 234 case TCIOFF: 235 if (tcgetattr(fd, &term) == -1) 236 return (-1); 237 c = term.c_cc[action == TCIOFF ? VSTOP : VSTART]; 238 if (c != _POSIX_VDISABLE && _write(fd, &c, sizeof(c)) == -1) 239 return (-1); 240 return (0); 241 default: 242 errno = EINVAL; 243 return (-1); 244 } 245 /* NOTREACHED */ 246 } 247