| 1 | /*- |
| 2 | * Copyright (c) 1989 The Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * %sccs.include.redist.c% |
| 6 | */ |
| 7 | |
| 8 | #if defined(LIBC_SCCS) && !defined(lint) |
| 9 | static char sccsid[] = "@(#)termios.c 5.13 (Berkeley) %G%"; |
| 10 | #endif /* LIBC_SCCS and not lint */ |
| 11 | |
| 12 | #include <sys/types.h> |
| 13 | #include <sys/ioctl.h> |
| 14 | #include <sys/tty.h> |
| 15 | #define KERNEL /* XXX - FREAD and FWRITE ifdef'd KERNEL*/ |
| 16 | #include <sys/fcntl.h> |
| 17 | #undef KERNEL |
| 18 | |
| 19 | #include <errno.h> |
| 20 | #include <stdio.h> |
| 21 | #include <termios.h> |
| 22 | #include <unistd.h> |
| 23 | |
| 24 | int |
| 25 | tcgetattr(fd, t) |
| 26 | int fd; |
| 27 | struct termios *t; |
| 28 | { |
| 29 | |
| 30 | return (ioctl(fd, TIOCGETA, t)); |
| 31 | } |
| 32 | |
| 33 | int |
| 34 | tcsetattr(fd, opt, t) |
| 35 | int fd, opt; |
| 36 | const struct termios *t; |
| 37 | { |
| 38 | struct termios localterm; |
| 39 | |
| 40 | if (opt & TCSASOFT) { |
| 41 | localterm = *t; |
| 42 | localterm.c_cflag |= CIGNORE; |
| 43 | t = &localterm; |
| 44 | } |
| 45 | switch (opt & ~TCSASOFT) { |
| 46 | case TCSANOW: |
| 47 | return (ioctl(fd, TIOCSETA, t)); |
| 48 | case TCSADRAIN: |
| 49 | return (ioctl(fd, TIOCSETAW, t)); |
| 50 | case TCSAFLUSH: |
| 51 | return (ioctl(fd, TIOCSETAF, t)); |
| 52 | default: |
| 53 | errno = EINVAL; |
| 54 | return (-1); |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | int |
| 59 | #if __STDC__ |
| 60 | tcsetpgrp(int fd, pid_t pgrp) |
| 61 | #else |
| 62 | tcsetpgrp(fd, pgrp) |
| 63 | int fd; |
| 64 | pid_t pgrp; |
| 65 | #endif |
| 66 | { |
| 67 | int s; |
| 68 | |
| 69 | s = pgrp; |
| 70 | return (ioctl(fd, TIOCSPGRP, &s)); |
| 71 | } |
| 72 | |
| 73 | pid_t |
| 74 | tcgetpgrp(fd) |
| 75 | { |
| 76 | int s; |
| 77 | |
| 78 | if (ioctl(fd, TIOCGPGRP, &s) < 0) |
| 79 | return ((pid_t)-1); |
| 80 | |
| 81 | return ((pid_t)s); |
| 82 | } |
| 83 | |
| 84 | speed_t |
| 85 | cfgetospeed(t) |
| 86 | const struct termios *t; |
| 87 | { |
| 88 | |
| 89 | return (t->c_ospeed); |
| 90 | } |
| 91 | |
| 92 | speed_t |
| 93 | cfgetispeed(t) |
| 94 | const struct termios *t; |
| 95 | { |
| 96 | |
| 97 | return (t->c_ispeed); |
| 98 | } |
| 99 | |
| 100 | int |
| 101 | cfsetospeed(t, speed) |
| 102 | struct termios *t; |
| 103 | speed_t speed; |
| 104 | { |
| 105 | |
| 106 | t->c_ospeed = speed; |
| 107 | return (0); |
| 108 | } |
| 109 | |
| 110 | int |
| 111 | cfsetispeed(t, speed) |
| 112 | struct termios *t; |
| 113 | speed_t speed; |
| 114 | { |
| 115 | |
| 116 | t->c_ispeed = speed; |
| 117 | return (0); |
| 118 | } |
| 119 | |
| 120 | int |
| 121 | cfsetspeed(t, speed) |
| 122 | struct termios *t; |
| 123 | speed_t speed; |
| 124 | { |
| 125 | |
| 126 | t->c_ispeed = t->c_ospeed = speed; |
| 127 | return (0); |
| 128 | } |
| 129 | |
| 130 | /* |
| 131 | * Make a pre-existing termios structure into "raw" mode: character-at-a-time |
| 132 | * mode with no characters interpreted, 8-bit data path. |
| 133 | */ |
| 134 | void |
| 135 | cfmakeraw(t) |
| 136 | struct termios *t; |
| 137 | { |
| 138 | |
| 139 | t->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON); |
| 140 | t->c_oflag &= ~OPOST; |
| 141 | t->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN); |
| 142 | t->c_cflag &= ~(CSIZE|PARENB); |
| 143 | t->c_cflag |= CS8; |
| 144 | /* XXX set MIN/TIME */ |
| 145 | } |
| 146 | |
| 147 | tcsendbreak(fd, len) |
| 148 | int fd, len; |
| 149 | { |
| 150 | struct timeval sleepytime; |
| 151 | |
| 152 | sleepytime.tv_sec = 0; |
| 153 | sleepytime.tv_usec = 400000; |
| 154 | if (ioctl(fd, TIOCSBRK, 0) == -1) |
| 155 | return (-1); |
| 156 | (void)select(0, 0, 0, 0, &sleepytime); |
| 157 | if (ioctl(fd, TIOCCBRK, 0) == -1) |
| 158 | return (-1); |
| 159 | return (0); |
| 160 | } |
| 161 | |
| 162 | tcdrain(fd) |
| 163 | int fd; |
| 164 | { |
| 165 | |
| 166 | return (ioctl(fd, TIOCDRAIN, 0)); |
| 167 | } |
| 168 | |
| 169 | tcflush(fd, which) |
| 170 | int fd, which; |
| 171 | { |
| 172 | int com; |
| 173 | |
| 174 | switch (which) { |
| 175 | case TCIFLUSH: |
| 176 | com = FREAD; |
| 177 | break; |
| 178 | case TCOFLUSH: |
| 179 | com = FWRITE; |
| 180 | break; |
| 181 | case TCIOFLUSH: |
| 182 | com = FREAD | FWRITE; |
| 183 | break; |
| 184 | default: |
| 185 | errno = EINVAL; |
| 186 | return (-1); |
| 187 | } |
| 188 | return (ioctl(fd, TIOCFLUSH, &com)); |
| 189 | } |
| 190 | |
| 191 | tcflow(fd, action) |
| 192 | int fd, action; |
| 193 | { |
| 194 | struct termios term; |
| 195 | u_char c; |
| 196 | |
| 197 | switch (action) { |
| 198 | case TCOOFF: |
| 199 | return (ioctl(fd, TIOCSTOP, 0)); |
| 200 | case TCOON: |
| 201 | return (ioctl(fd, TIOCSTART, 0)); |
| 202 | case TCION: |
| 203 | case TCIOFF: |
| 204 | if (tcgetattr(fd, &term) == -1) |
| 205 | return (-1); |
| 206 | c = term.c_cc[action == TCIOFF ? VSTOP : VSTART]; |
| 207 | if (c != _POSIX_VDISABLE && write(fd, &c, sizeof(c)) == -1) |
| 208 | return (-1); |
| 209 | return (0); |
| 210 | default: |
| 211 | errno = EINVAL; |
| 212 | return (-1); |
| 213 | } |
| 214 | /* NOTREACHED */ |
| 215 | } |