2 * Copyright (c) 1989, 1993
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24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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29 * $FreeBSD: src/lib/libc/gen/termios.c,v 1.9.2.1 2000/03/18 23:13:25 jasone Exp $
31 * @(#)termios.c 8.2 (Berkeley) 2/21/94
34 #include "namespace.h"
35 #include <sys/types.h>
36 #include <sys/fcntl.h>
37 #include <sys/ioctl.h>
45 #include "un-namespace.h"
48 tcgetattr(int fd, struct termios *t)
51 return (_ioctl(fd, TIOCGETA, t));
55 tcsetattr(int fd, int opt, const struct termios *t)
57 struct termios localterm;
61 localterm.c_cflag |= CIGNORE;
64 switch (opt & ~TCSASOFT) {
66 return (_ioctl(fd, TIOCSETA, t));
68 return (_ioctl(fd, TIOCSETAW, t));
70 return (_ioctl(fd, TIOCSETAF, t));
78 tcsetpgrp(int fd, pid_t pgrp)
83 return (_ioctl(fd, TIOCSPGRP, &s));
91 if (_ioctl(fd, TIOCGPGRP, &s) < 0)
102 if (_ioctl(fd, TIOCGSID, &s) < 0)
109 cfgetospeed(const struct termios *t)
112 return (t->c_ospeed);
116 cfgetispeed(const struct termios *t)
119 return (t->c_ispeed);
123 cfsetospeed(struct termios *t, speed_t speed)
131 cfsetispeed(struct termios *t, speed_t speed)
139 cfsetspeed(struct termios *t, speed_t speed)
142 t->c_ispeed = t->c_ospeed = speed;
147 * Make a pre-existing termios structure into "raw" mode: character-at-a-time
148 * mode with no characters interpreted, 8-bit data path.
151 cfmakeraw(struct termios *t)
154 t->c_iflag &= ~(IMAXBEL|IXOFF|INPCK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON|IGNPAR);
155 t->c_iflag |= IGNBRK;
156 t->c_oflag &= ~OPOST;
157 t->c_lflag &= ~(ECHO|ECHOE|ECHOK|ECHONL|ICANON|ISIG|IEXTEN|NOFLSH|TOSTOP|PENDIN);
158 t->c_cflag &= ~(CSIZE|PARENB);
159 t->c_cflag |= CS8|CREAD;
165 * Obtain a termios structure which is similar to the one provided by
169 cfmakesane(struct termios *t)
171 t->c_cflag = TTYDEF_CFLAG;
172 t->c_iflag = TTYDEF_IFLAG;
173 t->c_lflag = TTYDEF_LFLAG;
174 t->c_oflag = TTYDEF_OFLAG;
175 t->c_ispeed = TTYDEF_SPEED;
176 t->c_ospeed = TTYDEF_SPEED;
177 memcpy(&t->c_cc, ttydefchars, sizeof ttydefchars);
181 tcsendbreak(int fd, int len __unused)
183 struct timeval sleepytime;
185 sleepytime.tv_sec = 0;
186 sleepytime.tv_usec = 400000;
187 if (_ioctl(fd, TIOCSBRK, 0) == -1)
189 _select(0, 0, 0, 0, &sleepytime);
190 if (_ioctl(fd, TIOCCBRK, 0) == -1)
198 return (_ioctl(fd, TIOCDRAIN, 0));
202 __weak_reference(__tcdrain, tcdrain);
206 tcflush(int fd, int which)
218 com = FREAD | FWRITE;
224 return (_ioctl(fd, TIOCFLUSH, &com));
228 tcflow(int fd, int action)
235 return (_ioctl(fd, TIOCSTOP, 0));
237 return (_ioctl(fd, TIOCSTART, 0));
240 if (tcgetattr(fd, &term) == -1)
242 c = term.c_cc[action == TCIOFF ? VSTOP : VSTART];
243 if (c != _POSIX_VDISABLE && _write(fd, &c, sizeof(c)) == -1)