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 5.8 (Berkeley) 05/06/91"; 10 #endif /* LIBC_SCCS and not lint */ 11 12 #include <sys/types.h> 13 #include <sys/errno.h> 14 #include <sys/ioctl.h> 15 #include <sys/tty.h> 16 #define KERNEL /* XXX - FREAD and FWRITE was ifdef'd KERNEL*/ 17 #include <sys/fcntl.h> 18 #undef KERNEL 19 #include <termios.h> 20 #include <stdio.h> 21 #include <unistd.h> 22 23 int 24 tcgetattr(fd, t) 25 int fd; 26 struct termios *t; 27 { 28 29 return(ioctl(fd, TIOCGETA, t)); 30 } 31 32 int 33 tcsetattr(fd, opt, t) 34 int fd, opt; 35 const struct termios *t; 36 { 37 struct termios localterm; 38 39 if (opt & TCSASOFT) { 40 localterm = *t; 41 localterm.c_cflag |= CIGNORE; 42 t = &localterm; 43 opt &= ~TCSASOFT; 44 } 45 if (opt == TCSANOW) 46 return (ioctl(fd, TIOCSETA, t)); 47 else if (opt == TCSADRAIN) 48 return (ioctl(fd, TIOCSETAW, t)); 49 return (ioctl(fd, TIOCSETAF, t)); 50 } 51 52 int 53 #if __STDC__ 54 tcsetpgrp(int fd, pid_t pgrp) 55 #else 56 tcsetpgrp(fd, pgrp) 57 int fd; 58 pid_t pgrp; 59 #endif 60 { 61 62 return(ioctl(fd, TIOCSPGRP, &pgrp)); 63 } 64 65 pid_t 66 tcgetpgrp(fd) 67 { 68 int s; 69 70 if (ioctl(fd, TIOCGPGRP, &s) < 0) 71 return((pid_t)-1); 72 73 return((pid_t)s); 74 } 75 76 speed_t 77 cfgetospeed(t) 78 const struct termios *t; 79 { 80 81 return(t->c_ospeed); 82 } 83 84 speed_t 85 cfgetispeed(t) 86 const struct termios *t; 87 { 88 89 return(t->c_ispeed); 90 } 91 92 int 93 cfsetospeed(t, speed) 94 struct termios *t; 95 speed_t speed; 96 { 97 t->c_ospeed = speed; 98 99 return (0); 100 } 101 102 int 103 cfsetispeed(t, speed) 104 struct termios *t; 105 speed_t speed; 106 { 107 t->c_ispeed = speed; 108 109 return (0); 110 } 111 112 void 113 cfsetspeed(t, speed) 114 struct termios *t; 115 speed_t speed; 116 { 117 t->c_ispeed = t->c_ospeed = speed; 118 } 119 120 /* 121 * Make a pre-existing termios structure into "raw" mode: 122 * character-at-a-time mode with no characters interpreted, 123 * 8-bit data path. 124 */ 125 void 126 cfmakeraw(t) 127 struct termios *t; 128 { 129 t->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON); 130 t->c_oflag &= ~OPOST; 131 t->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN); 132 t->c_cflag &= ~(CSIZE|PARENB); 133 t->c_cflag |= CS8; 134 /* set MIN/TIME */ 135 } 136 137 tcsendbreak(fd, len) 138 int fd, len; 139 { 140 struct timeval sleepytime; 141 142 sleepytime.tv_sec = 0; 143 sleepytime.tv_usec = 400000; 144 if (ioctl(fd, TIOCSBRK, 0) == -1) 145 return (-1); 146 select(0, 0, 0, 0, &sleepytime); 147 if (ioctl(fd, TIOCCBRK, 0) == -1) 148 return (-1); 149 150 return (0); 151 } 152 153 tcdrain(fd) 154 int fd; 155 { 156 if (ioctl(fd, TIOCDRAIN, 0) == -1) 157 return (-1); 158 159 return (0); 160 } 161 162 tcflush(fd, which) 163 int fd, which; 164 { 165 int com; 166 167 switch (which) { 168 case TCIFLUSH: 169 com = FREAD; 170 break; 171 case TCOFLUSH: 172 com = FWRITE; 173 break; 174 case TCIOFLUSH: 175 com = FREAD | FWRITE; 176 break; 177 default: 178 errno = EINVAL; 179 return (-1); 180 } 181 if (ioctl(fd, TIOCFLUSH, &com) == -1) 182 return (-1); 183 184 return (0); 185 } 186 187 tcflow(fd, action) 188 int fd, action; 189 { 190 switch (action) { 191 case TCOOFF: 192 return (ioctl(fd, TIOCSTOP, 0)); 193 break; 194 case TCOON: 195 return (ioctl(fd, TIOCSTART, 0)); 196 break; 197 case TCIOFF: 198 case TCION: { /* these posix functions are STUPID */ 199 struct termios term; 200 unsigned char c; 201 202 if (tcgetattr(fd, &term) == -1) 203 return (-1); 204 c = term.c_cc[action == TCIOFF ? VSTOP : VSTART]; 205 if (c != _POSIX_VDISABLE && write(fd, &c, 1) == -1) 206 return (-1); 207 break; 208 } 209 default: 210 errno = EINVAL; 211 return (-1); 212 } 213 214 return (0); 215 } 216