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/* Copyright (C) 1992, 1993, 1996, 1997, 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
About the only thing remaining here fromthe original Linux-8086 C library
version by Robert de Bath <robert@mayday.compulink.co.uk>, is the general
layout. All else has been recently stolen from GNU libc, since that was
much more current.
*/
#include <errno.h>
#include <stddef.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <unistd.h>
#include <termios.h>
#ifdef L_isatty
/* Return 1 if FD is a terminal, 0 if not. */
int isatty(int fd)
{
struct termios term;
return (tcgetattr (fd, &term) == 0);
}
#endif
#ifdef L_tcdrain
/* Wait for pending output to be written on FD. */
int tcdrain (int fd)
{
/* With an argument of 1, TCSBRK waits for the output to drain. */
return ioctl(fd, TCSBRK, 1);
}
#endif
#ifdef L_tcflow
/* Suspend or restart transmission on FD. */
int tcflow ( int fd, int action)
{
return ioctl(fd, TCXONC, action);
}
#endif
#ifdef L_tcflush
/* Flush pending data on FD. */
int tcflush ( int fd, int queue_selector)
{
return ioctl(fd, TCFLSH, queue_selector);
}
#endif
#ifdef L_tcsendbreak
/* Send zero bits on FD. */
int tcsendbreak( int fd, int duration)
{
/*
* The break lasts 0.25 to 0.5 seconds if DURATION is zero, and an
* implementation-defined period if DURATION is nonzero. We define a
* positive DURATION to be number of milliseconds to break.
*/
if (duration <= 0)
return ioctl(fd, TCSBRK, 0);
/*
* ioctl can't send a break of any other duration for us. This could be
* changed to use trickery (e.g. lower speed and send a '\0') to send
* the break, but for now just return an error.
*/
__set_errno(EINVAL);
return -1;
}
#endif
#ifdef L_tcsetpgrp
/* Set the foreground process group ID of FD set PGRP_ID. */
int tcsetpgrp ( int fd, pid_t pgrp_id)
{
return ioctl (fd, TIOCSPGRP, &pgrp_id);
}
#endif
#ifdef L_tcgetpgrp
/* Return the foreground process group ID of FD. */
pid_t tcgetpgrp ( int fd)
{
int pgrp;
if (ioctl (fd, TIOCGPGRP, &pgrp) < 0)
return (pid_t) -1;
return (pid_t) pgrp;
}
#endif
/* This is a gross hack around a kernel bug. If the cfsetispeed functions is
* called with the SPEED argument set to zero this means use the same speed as
* for output. But we don't have independent input and output speeds and
* therefore cannot record this.
*
* We use an unused bit in the `c_iflag' field to keep track of this use of
* `cfsetispeed'. The value here must correspond to the one used in
* `tcsetattr.c'. */
#define IBAUD0 020000000000
#ifdef L_cfgetospeed
/* Return the output baud rate stored in *TERMIOS_P. */
speed_t cfgetospeed ( const struct termios *termios_p)
{
return termios_p->c_cflag & (CBAUD | CBAUDEX);
}
#endif
#ifdef L_cfgetispeed
/* Return the input baud rate stored in *TERMIOS_P.
* Although for Linux there is no difference between input and output
* speed, the numerical 0 is a special case for the input baud rate. It
* should set the input baud rate to the output baud rate. */
speed_t cfgetispeed (const struct termios *termios_p)
{
return ((termios_p->c_iflag & IBAUD0)
? 0 : termios_p->c_cflag & (CBAUD | CBAUDEX));
}
#endif
#ifdef L_cfsetospeed
/* Set the output baud rate stored in *TERMIOS_P to SPEED. */
int cfsetospeed (struct termios *termios_p, speed_t speed)
{
if ((speed & ~CBAUD) != 0
&& (speed < B57600 || speed > B460800))
{
__set_errno(EINVAL);
return -1;
}
termios_p->c_cflag &= ~(CBAUD | CBAUDEX);
termios_p->c_cflag |= speed;
return 0;
}
#endif
#ifdef L_cfsetispeed
/* Set the input baud rate stored in *TERMIOS_P to SPEED.
* Although for Linux there is no difference between input and output
* speed, the numerical 0 is a special case for the input baud rate. It
* should set the input baud rate to the output baud rate. */
int cfsetispeed ( struct termios *termios_p, speed_t speed)
{
if ((speed & ~CBAUD) != 0
&& (speed < B57600 || speed > B460800))
{
__set_errno(EINVAL);
return -1;
}
if (speed == 0)
termios_p->c_iflag |= IBAUD0;
else
{
termios_p->c_iflag &= ~IBAUD0;
termios_p->c_cflag &= ~(CBAUD | CBAUDEX);
termios_p->c_cflag |= speed;
}
return 0;
}
#endif
#ifdef L_tcspeed
struct speed_struct
{
speed_t value;
speed_t internal;
};
static const struct speed_struct speeds[] =
{
#ifdef B0
{ 0, B0 },
#endif
#ifdef B50
{ 50, B50 },
#endif
#ifdef B75
{ 75, B75 },
#endif
#ifdef B110
{ 110, B110 },
#endif
#ifdef B134
{ 134, B134 },
#endif
#ifdef B150
{ 150, B150 },
#endif
#ifdef B200
{ 200, B200 },
#endif
#ifdef B300
{ 300, B300 },
#endif
#ifdef B600
{ 600, B600 },
#endif
#ifdef B1200
{ 1200, B1200 },
#endif
#ifdef B1200
{ 1200, B1200 },
#endif
#ifdef B1800
{ 1800, B1800 },
#endif
#ifdef B2400
{ 2400, B2400 },
#endif
#ifdef B4800
{ 4800, B4800 },
#endif
#ifdef B9600
{ 9600, B9600 },
#endif
#ifdef B19200
{ 19200, B19200 },
#endif
#ifdef B38400
{ 38400, B38400 },
#endif
#ifdef B57600
{ 57600, B57600 },
#endif
#ifdef B76800
{ 76800, B76800 },
#endif
#ifdef B115200
{ 115200, B115200 },
#endif
#ifdef B153600
{ 153600, B153600 },
#endif
#ifdef B230400
{ 230400, B230400 },
#endif
#ifdef B307200
{ 307200, B307200 },
#endif
#ifdef B460800
{ 460800, B460800 },
#endif
};
/* Set both the input and output baud rates stored in *TERMIOS_P to SPEED. */
int cfsetspeed (struct termios *termios_p, speed_t speed)
{
size_t cnt;
for (cnt = 0; cnt < sizeof (speeds) / sizeof (speeds[0]); ++cnt)
if (speed == speeds[cnt].internal)
{
cfsetispeed (termios_p, speed);
cfsetospeed (termios_p, speed);
return 0;
}
else if (speed == speeds[cnt].value)
{
cfsetispeed (termios_p, speeds[cnt].internal);
cfsetospeed (termios_p, speeds[cnt].internal);
return 0;
}
__set_errno (EINVAL);
return -1;
}
#endif
#ifdef L_cfmakeraw
/* Copyright (C) 1992, 1996, 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
*/
#include <termios.h>
/* Set *T to indicate raw mode. */
void
cfmakeraw (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;
t->c_cc[VMIN] = 1; /* read returns when one char is available. */
t->c_cc[VTIME] = 0;
}
#endif
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