@c
@c COPYRIGHT (c) 1988-1998.
@c On-Line Applications Research Corporation (OAR).
@c All rights reserved.
@c
@c $Id$
@c
@chapter Device- and Class- Specific Functions Manager
@section Introduction
The device- and class- specific functions manager is ...
The directives provided by the device- and class- specific functions
manager are:
@itemize @bullet
@item @code{cfgetispeed} - Reads terminal input baud rate
@item @code{cfgetospeed} - Reads terminal output baud rate
@item @code{cfsetispeed} - Sets terminal input baud rate
@item @code{cfsetospeed} - Set terminal output baud rate
@item @code{tcgetattr} - Gets terminal attributes
@item @code{tcsetattr} - Set terminal attributes
@item @code{tcsendbreak} - Sends a break to a terminal
@item @code{tcdrain} - Waits for all output to be transmitted to the terminal
@item @code{tcflush} - Discards terminal data
@item @code{tcflow} - Suspends/restarts terminal output
@item @code{tcgetpgrp} - Gets foreground process group ID
@item @code{tcsetpgrp} - Sets foreground process group ID
@end itemize
@section Background
There is currently no text in this section.
@section Operations
There is currently no text in this section.
@section Directives
This section details the device- and class- specific functions manager's
directives. A subsection is dedicated to each of this manager's directives
and describes the calling sequence, related constants, usage,
and status codes.
@page
@subsection cfgetispeed - Reads terminal input baud rate
@subheading CALLING SEQUENCE:
@ifset is-C
@example
#include <termios.h>
int cfgetispeed(
const struct termios *p
);
@end example
@end ifset
@ifset is-Ada
@end ifset
@subheading STATUS CODES:
The @code{cfgetispeed()} function returns a code for baud rate.
@subheading DESCRIPTION:
The @code{cfsetispeed()} function stores a code for the terminal speed
stored in a struct termios. The codes are defined in @code{<termios.h>}
by the macros BO, B50, B75, B110, B134, B150, B200, B300, B600, B1200,
B1800, B2400, B4800, B9600, B19200, and B38400.
The @code{cfsetispeed()} function does not do anything to the hardware.
It merely stores a value for use by @code{tcsetattr()}.
@subheading NOTES:
Baud rates are defined by symbols, such as B110, B1200, B2400. The actual
number returned for any given speed may change from system to system.
@page
@subsection cfgetospeed - Reads terminal output baud rate
@subheading CALLING SEQUENCE:
@ifset is-C
@example
#include <termios.h>
int cfgetospeed(
const struct termios *p
);
@end example
@end ifset
@ifset is-Ada
@end ifset
@subheading STATUS CODES:
The @code{cfgetospeed()} function returns the termios code for the baud rate.
@subheading DESCRIPTION:
The @code{cfgetospeed()} function returns a code for the terminal speed
stored in a @code{struct termios}. The codes are defined in @code{<termios.h>}
by the macros BO, B50, B75, B110, B134, B150, B200, B300, B600, B1200, B1800,
B2400, B4800, B9600, B19200, and B38400.
The @code{cfgetospeed()} function does not do anything to the hardware.
It merely returns the value stored by a previous call to @code{tcgetattr()}.
@subheading NOTES:
Baud rates are defined by symbols, such as B110, B1200, B2400. The actual
number returned for any given speed may change from system to system.
@page
@subsection cfsetispeed - Sets terminal input baud rate
@subheading CALLING SEQUENCE:
@ifset is-C
@example
#include <termios.h>
int cfsetispeed(
struct termios *p,
speed_t speed
);
@end example
@end ifset
@ifset is-Ada
@end ifset
@subheading STATUS CODES:
The @code{cfsetispeed()} function returns a zero when successful and
returns -1 when an error occurs.
@subheading DESCRIPTION:
The @code{cfsetispeed()} function stores a code for the terminal speed
stored in a struct termios. The codes are defined in @code{<termios.h>}
by the macros B0, B50, B75, B110, B134, B150, B200, B300, B600, B1200,
B1800, B2400, B4800, B9600, B19200, and B38400.
@subheading NOTES:
This function merely stores a value in the @code{termios} structure. It
does not change the terminal speed until a @code{tcsetattr()} is done.
It does not detect impossible terminal speeds.
@page
@subsection cfsetospeed - Sets terminal output baud rate
@subheading CALLING SEQUENCE:
@ifset is-C
@example
#include <termios.h>
int cfsetospeed(
struct termios *p,
speed_t speed
);
@end example
@end ifset
@ifset is-Ada
@end ifset
@subheading STATUS CODES:
The @code{cfsetospeed()} function returns a zero when successful and
returns -1 when an error occurs.
@subheading DESCRIPTION:
The @code{cfsetospeed()} function stores a code for the terminal speed stored
in a struct @code{termios}. The codes are defiined in @code{<termios.h>} by the
macros B0, B50, B75, B110, B134, B150, B200, B300, B600, B1200, B1800, B2400,
B4800, B9600, B19200, and B38400.
The @code{cfsetospeed()} function does not do anything to the hardware. It
merely stores a value for use by @code{tcsetattr()}.
@subheading NOTES:
This function merely stores a value in the @code{termios} structure.
It does not change the terminal speed until a @code{tcsetattr()} is done.
It does not detect impossible terminal speeds.
@page
@subsection tcgetattr - Gets terminal attributes
@subheading CALLING SEQUENCE:
@ifset is-C
@example
#include <termios.h>
#include <unistd.h>
int tcgetattr(
int fildes,
struct termios *p
);
@end example
@end ifset
@ifset is-Ada
@end ifset
@subheading STATUS CODES:
@table @b
@item EBADF
Invalid file descriptor
@item ENOOTY
Terminal control function attempted for a file that is not a terminal.
@end table
@subheading DESCRIPTION:
The @code{tcgetattr()} gets the parameters associated with the terminal
referred to by @code{fildes} and stores them into the @code{termios()}
structure pointed to by @code{termios_p}.
@subheading NOTES:
NONE
@page
@subsection tcsetattr - Set terminal attributes
@subheading CALLING SEQUENCE:
@ifset is-C
@example
#include <termios.h>
#include <unistd.h>
int tcsetattr(
int fildes,
int options,
const struct termios *tp
);
@end example
@end ifset
@ifset is-Ada
@end ifset
@subheading STATUS CODES:
@table @b
@item E
The
@end table
@subheading DESCRIPTION:
@subheading NOTES:
@page
@subsection tcsendbreak - Sends a break to a terminal
@subheading CALLING SEQUENCE:
@ifset is-C
@example
int tcsendbreak(
);
@end example
@end ifset
@ifset is-Ada
@end ifset
@subheading STATUS CODES:
@table @b
@item E
The
@end table
@subheading DESCRIPTION:
@subheading NOTES:
This routine is not currently supported by RTEMS but could be
in a future version.
@page
@subsection tcdrain - Waits for all output to be transmitted to the terminal.
@subheading CALLING SEQUENCE:
@ifset is-C
@example
#include <termios.h>
#include <unistd.h>
int tcdrain(
int fildes
);
@end example
@end ifset
@ifset is-Ada
@end ifset
@subheading STATUS CODES:
@table @b
@item EBADF
Invalid file descriptor
@item EINTR
Function was interrupted by a signal
@item ENOTTY
Terminal control function attempted for a file that is not a terminal.
@end table
@subheading DESCRIPTION:
The @code{tcdrain()} function waits until all output written to
@code{fildes} has been transmitted.
@subheading NOTES:
NONE
@page
@subsection tcflush - Discards terminal data
@subheading CALLING SEQUENCE:
@ifset is-C
@example
int tcflush(
);
@end example
@end ifset
@ifset is-Ada
@end ifset
@subheading STATUS CODES:
@table @b
@item E
The
@end table
@subheading DESCRIPTION:
@subheading NOTES:
This routine is not currently supported by RTEMS but could be
in a future version.
@page
@subsection tcflow - Suspends/restarts terminal output.
@subheading CALLING SEQUENCE:
@ifset is-C
@example
int tcflow(
);
@end example
@end ifset
@ifset is-Ada
@end ifset
@subheading STATUS CODES:
@table @b
@item E
The
@end table
@subheading DESCRIPTION:
@subheading NOTES:
This routine is not currently supported by RTEMS but could be
in a future version.
@page
@subsection tcgetpgrp - Gets foreground process group ID
@subheading CALLING SEQUENCE:
@ifset is-C
@example
int tcgetpgrp(
);
@end example
@end ifset
@ifset is-Ada
@end ifset
@subheading STATUS CODES:
@table @b
@item E
The
@end table
@subheading DESCRIPTION:
@subheading NOTES:
This routine is not currently supported by RTEMS but could be
in a future version.
@page
@subsection tcsetpgrp - Sets foreground process group ID
@subheading CALLING SEQUENCE:
@ifset is-C
@example
int tcsetpgrp(
);
@end example
@end ifset
@ifset is-Ada
@end ifset
@subheading STATUS CODES:
@table @b
@item E
The
@end table
@subheading DESCRIPTION:
@subheading NOTES:
This routine is not currently supported by RTEMS but could be
in a future version.
