diff options
Diffstat (limited to 'lib/libc/gen/termios.c')
| -rw-r--r-- | lib/libc/gen/termios.c | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/lib/libc/gen/termios.c b/lib/libc/gen/termios.c new file mode 100644 index 0000000..a99d86f --- /dev/null +++ b/lib/libc/gen/termios.c @@ -0,0 +1,242 @@ +/*- + * Copyright (c) 1989, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)termios.c 8.2 (Berkeley) 2/21/94"; +#endif /* LIBC_SCCS and not lint */ + +#include <sys/types.h> +#include <sys/ioctl.h> +#include <sys/tty.h> +#include <sys/time.h> +#define KERNEL /* XXX - FREAD and FWRITE ifdef'd KERNEL*/ +#include <sys/fcntl.h> +#undef KERNEL + +#include <errno.h> +#include <stdio.h> +#include <termios.h> +#include <unistd.h> + +int +tcgetattr(fd, t) + int fd; + struct termios *t; +{ + + return (ioctl(fd, TIOCGETA, t)); +} + +int +tcsetattr(fd, opt, t) + int fd, opt; + const struct termios *t; +{ + struct termios localterm; + + if (opt & TCSASOFT) { + localterm = *t; + localterm.c_cflag |= CIGNORE; + t = &localterm; + } + switch (opt & ~TCSASOFT) { + case TCSANOW: + return (ioctl(fd, TIOCSETA, t)); + case TCSADRAIN: + return (ioctl(fd, TIOCSETAW, t)); + case TCSAFLUSH: + return (ioctl(fd, TIOCSETAF, t)); + default: + errno = EINVAL; + return (-1); + } +} + +int +#if __STDC__ +tcsetpgrp(int fd, pid_t pgrp) +#else +tcsetpgrp(fd, pgrp) + int fd; + pid_t pgrp; +#endif +{ + int s; + + s = pgrp; + return (ioctl(fd, TIOCSPGRP, &s)); +} + +pid_t +tcgetpgrp(fd) +{ + int s; + + if (ioctl(fd, TIOCGPGRP, &s) < 0) + return ((pid_t)-1); + + return ((pid_t)s); +} + +speed_t +cfgetospeed(t) + const struct termios *t; +{ + + return (t->c_ospeed); +} + +speed_t +cfgetispeed(t) + const struct termios *t; +{ + + return (t->c_ispeed); +} + +int +cfsetospeed(t, speed) + struct termios *t; + speed_t speed; +{ + + t->c_ospeed = speed; + return (0); +} + +int +cfsetispeed(t, speed) + struct termios *t; + speed_t speed; +{ + + t->c_ispeed = speed; + return (0); +} + +int +cfsetspeed(t, speed) + struct termios *t; + speed_t speed; +{ + + t->c_ispeed = t->c_ospeed = speed; + return (0); +} + +/* + * Make a pre-existing termios structure into "raw" mode: character-at-a-time + * mode with no characters interpreted, 8-bit data path. + */ +void +cfmakeraw(t) + struct termios *t; +{ + + t->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON); + t->c_oflag &= ~OPOST; + t->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN); + t->c_cflag &= ~(CSIZE|PARENB); + t->c_cflag |= CS8; + /* XXX set MIN/TIME */ +} + +tcsendbreak(fd, len) + int fd, len; +{ + struct timeval sleepytime; + + sleepytime.tv_sec = 0; + sleepytime.tv_usec = 400000; + if (ioctl(fd, TIOCSBRK, 0) == -1) + return (-1); + (void)select(0, 0, 0, 0, &sleepytime); + if (ioctl(fd, TIOCCBRK, 0) == -1) + return (-1); + return (0); +} + +tcdrain(fd) + int fd; +{ + + return (ioctl(fd, TIOCDRAIN, 0)); +} + +tcflush(fd, which) + int fd, which; +{ + int com; + + switch (which) { + case TCIFLUSH: + com = FREAD; + break; + case TCOFLUSH: + com = FWRITE; + break; + case TCIOFLUSH: + com = FREAD | FWRITE; + break; + default: + errno = EINVAL; + return (-1); + } + return (ioctl(fd, TIOCFLUSH, &com)); +} + +tcflow(fd, action) + int fd, action; +{ + struct termios term; + u_char c; + + switch (action) { + case TCOOFF: + return (ioctl(fd, TIOCSTOP, 0)); + case TCOON: + return (ioctl(fd, TIOCSTART, 0)); + case TCION: + case TCIOFF: + if (tcgetattr(fd, &term) == -1) + return (-1); + c = term.c_cc[action == TCIOFF ? VSTOP : VSTART]; + if (c != _POSIX_VDISABLE && write(fd, &c, sizeof(c)) == -1) + return (-1); + return (0); + default: + errno = EINVAL; + return (-1); + } + /* NOTREACHED */ +} |
