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system76-edk2/StdLib/Include/sys/termios.h
Daryl McDaniel 450ea6d5b6 StdLib: Clarify and improve comments. 
Indentation has been corrected in all of the files.

LibC/Locale/multibyte_Utf8.c
LibC/Uefi/SysCalls.c
  Clarify and improve comments.

Include/sys/termios.h
  Add parameter names to function prototypes as referenced in the comments.

StdLibPrivateInternalFiles\Include\kfile.h
  Add comment for the fo_close fileop.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Daryl McDaniel <edk2-lists@mc2research.org>
Reviewed-by: Erik Bjorge <erik.c.bjorge@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19588 6f19259b-4bc3-4df7-8a09-765794883524
2016-01-06 00:31:42 +00:00

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/** @file
Macros and declarations for terminal oriented ioctls and
I/O discipline.
Copyright (c) 2016, Daryl McDaniel. All rights reserved.<BR>
Copyright (c) 2012 - 2014, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
* Copyright (c) 1988, 1989, 1993, 1994
* 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. 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.
*
* @(#)termios.h 8.3 (Berkeley) 3/28/94
NetBSD: termios.h,v 1.29 2005/12/11 12:25:21 christos Exp
**/
#ifndef _SYS_TERMIOS_H_
#define _SYS_TERMIOS_H_
#include <sys/ansi.h>
#include <sys/featuretest.h>
/* Special Control Characters
*
* Index into c_cc[] character array.
*/
typedef enum {
/* Name Enabled by */
VTABLEN, /* OXTABS - Length between TAB stops. */
VEOF, /* ICANON */
VEOL, /* ICANON */
VERASE, /* ICANON */
VKILL, /* ICANON */
VINTR, /* ISIG */
VQUIT, /* ISIG */
VMIN, /* !ICANON */
VTIME, /* !ICANON */
/* Extensions from BSD and POSIX -- Not yet implemented for UEFI */
VWERASE, /* IEXTEN, ICANON -- Erase the WORD to the left of the cursor */
VREPRINT, /* IEXTEN, ICANON -- Re-draw the current line (input buffer) */
VLNEXT, /* IEXTEN, ICANON -- Input the next character literally */
VDISCARD, /* IEXTEN -- Toggle. Discards output display until toggled. */
/* NCCS must always be the last member of this enum. */
NCCS /* Number of control characters in c_cc[] */
} CCC_INDEX;
#define _POSIX_VDISABLE ((unsigned char)'\377')
#define CCEQ(val, c) (c == val ? val != _POSIX_VDISABLE : 0)
/*
* Input flags - software input processing
c_iflag
*/
#define INLCR 0x0001 /* map NL into CR */
#define IGNCR 0x0002 /* ignore CR */
#define ICRNL 0x0004 /* map CR to NL (ala CRMOD) */
#define IGNSPEC 0x0008 /* Ignore function, control, and other non-printing special keys. */
#ifdef HAVE_DA_SERIAL
#define ISTRIP 0x0010 /* strip 8th bit off chars */
#define IGNBRK 0x0020 /* ignore BREAK condition */
#define BRKINT 0x0040 /* map BREAK to SIGINTR */
#define IRESRV1 0x0080
#define IGNPAR 0x0100 /* ignore (discard) parity errors */
#define PARMRK 0x0200 /* mark parity and framing errors */
#define INPCK 0x0400 /* enable checking of parity errors */
#define IXON 0x0800 /* enable output flow control */
#define IXOFF 0x1000 /* enable input flow control */
#define IXANY 0x2000 /* any char will restart after stop */
#endif /* HAVE_DA_SERIAL */
/*
* Output flags - software output processing
c_oflag
*/
#define OPOST 0x0001 /* enable following output processing */
#define ONLCR 0x0002 /* map NL to CR-NL (ala CRMOD) */
#define OXTABS 0x0004 /* expand tabs to spaces */
#define ONOEOT 0x0008 /* discard EOT's (^D) on output */
#define OCRNL 0x0010 /* map CR to NL */
#define ONOCR 0x0020 /* discard CR's when on column 0 */
#define ONLRET 0x0040 /* move to column 0 on CR */
#define OCTRL 0x0080 /* Map control characters to the sequence ^C */
/*
* Control flags - hardware control of terminal
c_cflag
*/
#ifdef HAVE_DA_SERIAL
#define CIGNORE 0x0001 /* ignore control flags */
#define CSIZE 0x0300 /* character size mask */
#define CS5 0x0000 /* 5 bits (pseudo) */
#define CS6 0x0100 /* 6 bits */
#define CS7 0x0200 /* 7 bits */
#define CS8 0x0300 /* 8 bits */
#define CSTOPB 0x0400 /* send 2 stop bits, else 1 */
#define CREAD 0x0800 /* enable receiver */
#define PARENB 0x1000 /* parity enable */
#define PARODD 0x2000 /* odd parity, else even */
#define HUPCL 0x4000 /* hang up on last close */
#define CLOCAL 0x8000 /* ignore modem status lines */
#endif
/*
* "Local" flags - dumping ground for other state
*
* Warning: some flags in this structure begin with
* the letter "I" and look like they belong in the
* input flag.
*/
#define ECHO 0x0001 /* enable echoing */
#define ECHOE 0x0002 /* visually erase chars */
#define ECHOK 0x0004 /* echo NL after line kill */
#define ECHONL 0x0008 /* echo NL even if ECHO is off */
#define ISIG 0x0010 /* enable signals INTR, QUIT, [D]SUSP */
#define ICANON 0x0020 /* canonicalize input lines */
#define IEXTEN 0x0040 /* enable Extensions */
#define SKIP_1 0x0100 /* Currently unused */
#define TOSTOP 0x0200 /* stop background jobs on output */
#define PENDIN 0x0400 /* re-echo input buffer at next read */
#define NOFLSH 0x0800 /* don't flush output on signal */
#define FLUSHO 0x1000 /* output being flushed (state) */
typedef INT8 cc_t;
typedef UINT16 tcflag_t;
typedef UINT32 speed_t;
struct termios {
INT32 c_ispeed; /* input speed - Use a signed type instead of speed_t */
INT32 c_ospeed; /* output speed - to ease integer promotion when used. */
tcflag_t c_iflag; /* input flags */
tcflag_t c_oflag; /* output flags */
tcflag_t c_cflag; /* control flags */
tcflag_t c_lflag; /* local flags */
cc_t c_cc[NCCS]; /* control chars */
};
/*
* Commands passed to tcsetattr() for setting the termios structure.
*/
#define TCSANOW 0 /* make change immediate */
#define TCSADRAIN 1 /* drain output, then change */
#define TCSAFLUSH 2 /* drain output, flush input */
#define TCSASOFT 0x10 /* flag - don't alter h.w. state */
/*
* Standard speeds
*/
#define B0 0
#define B50 50
#define B75 75
#define B110 110
#define B134 134
#define B150 150
#define B200 200
#define B300 300
#define B600 600
#define B1200 1200
#define B1800 1800
#define B2400 2400
#define B4800 4800
#define B9600 9600
#define B19200 19200
#define B38400 38400
// Extended speed definitions
#define B7200 7200
#define B14400 14400
#define B28800 28800
#define B57600 57600
#define B76800 76800
#define B115200 115200
#define B230400 230400
#define B460800 460800
#define B921600 921600
#define TCIFLUSH 1
#define TCOFLUSH 2
#define TCIOFLUSH 3
#define TCOOFF 1
#define TCOON 2
#define TCIOFF 3
#define TCION 4
#include <sys/EfiCdefs.h>
__BEGIN_DECLS
/** Get input baud rate.
Extracts the input baud rate from the termios structure pointed to by the
pTermios argument.
@param[in] pTermios A pointer to the termios structure from which to extract
the input baud rate.
@return The value of the input speed is returned exactly as it is contained
in the termios structure, without interpretation.
**/
speed_t cfgetispeed (const struct termios *);
/** Get output baud rate.
Extracts the output baud rate from the termios structure pointed to by the
pTermios argument.
@param[in] pTermios A pointer to the termios structure from which to extract
the output baud rate.
@return The value of the output speed is returned exactly as it is contained
in the termios structure, without interpretation.
**/
speed_t cfgetospeed (const struct termios *);
/** Set input baud rate.
Replaces the input baud rate, in the termios structure pointed to by the
pTermios argument, with the value of NewSpeed.
@param[out] pTermios A pointer to the termios structure into which to set
the input baud rate.
@param[in] NewSpeed The new input baud rate.
@retval 0 The operation completed successfully.
@retval -1 An error occured and errno is set to indicate the error.
* EINVAL - The value of NewSpeed is outside the range of
possible speed values as specified in <sys/termios.h>.
**/
int cfsetispeed (struct termios *, speed_t);
/** Set output baud rate.
Replaces the output baud rate, in the termios structure pointed to by the
pTermios argument, with the value of NewSpeed.
@param[out] pTermios A pointer to the termios structure into which to set
the output baud rate.
@param[in] NewSpeed The new output baud rate.
@retval 0 The operation completed successfully.
@retval -1 An error occured and errno is set to indicate the error.
* EINVAL - The value of NewSpeed is outside the range of
possible speed values as specified in <sys/termios.h>.
**/
int cfsetospeed (struct termios *, speed_t);
/** Get the parameters associated with an interactive IO device.
Get the parameters associated with the device referred to by
fd and store them into the termios structure referenced by pTermios.
@param[in] fd The file descriptor for an open interactive IO device.
@param[out] pTermios A pointer to a termios structure into which to store
attributes of the interactive IO device.
@retval 0 The operation completed successfully.
@retval -1 An error occured and errno is set to indicate the error.
* EBADF - The fd argument is not a valid file descriptor.
* ENOTTY - The file associated with fd is not an interactive IO device.
**/
int tcgetattr (int fd, struct termios *pTermios);
/** Set the parameters associated with an interactive IO device.
Set the parameters associated with the device referred to by
fd to the values in the termios structure referenced by pTermios.
Behavior is modified by the value of the OptAct parameter:
* TCSANOW: The change shall occur immediately.
* TCSADRAIN: The change shall occur after all output written to fd is
transmitted. This action should be used when changing parameters which
affect output.
* TCSAFLUSH: The change shall occur after all output written to fd is
transmitted, and all input so far received but not read shall be
discarded before the change is made.
@param[in] fd The file descriptor for an open interactive IO device.
@param[in] OptAct Currently has no effect.
@param[in] pTermios A pointer to a termios structure into which to retrieve
attributes to set in the interactive IO device.
@retval 0 The operation completed successfully.
@retval -1 An error occured and errno is set to indicate the error.
* EBADF - The fd argument is not a valid file descriptor.
* ENOTTY - The file associated with fd is not an interactive IO device.
**/
int tcsetattr (int fd, int OptAct, const struct termios *pTermios);
/** Transmit pending output.
@param[in] fd The file descriptor for an open interactive IO device.
@retval 0 The operation completed successfully.
@retval -1 An error occured and errno is set to indicate the error.
* EBADF - The fd argument is not a valid file descriptor.
* ENOTTY - The file associated with fd is not an interactive IO device.
* EINTR - A signal interrupted tcdrain().
* ENOTSUP - This function is not supported.
**/
int tcdrain (int fd);
/** Suspend or restart the transmission or reception of data.
This function will suspend or resume transmission or reception of data on
the file referred to by fd, depending on the value of Action.
@param[in] fd The file descriptor of an open interactive IO device (terminal).
@param[in] Action The action to be performed:
* TCOOFF - Suspend output.
* TCOON - Resume suspended output.
* TCIOFF - If fd refers to an IIO device, transmit a
STOP character, which is intended to cause the
terminal device to stop transmitting data.
* TCION - If fd refers to an IIO device, transmit a
START character, which is intended to cause the
terminal device to start transmitting data.
@retval 0 The operation completed successfully.
@retval -1 An error occured and errno is set to indicate the error.
* EBADF - The fd argument is not a valid file descriptor.
* ENOTTY - The file associated with fd is not an interactive IO device.
* EINVAL - The Action argument is not a supported value.
* ENOTSUP - This function is not supported.
**/
int tcflow (int fd, int Action);
/** Discard non-transmitted output data, non-read input data, or both.
@param[in] fd The file descriptor for an open interactive IO device.
@param[in] QueueSelector The IO queue to be affected:
* TCIFLUSH - If fd refers to a device open for input, flush
pending input. Otherwise error EINVAL.
* TCOFLUSH - If fd refers to a device open for output,
flush pending output. Otherwise error EINVAL.
* TCIOFLUSH - If fd refers to a device open for both
input and output, flush pending input and output.
Otherwise error EINVAL.
@retval 0 The operation completed successfully.
@retval -1 An error occured and errno is set to indicate the error.
* EBADF - The fd argument is not a valid file descriptor.
* ENOTTY - The file associated with fd is not an interactive IO device.
* EINVAL - The QueueSelector argument is not a supported value.
* ENOTSUP - This function is not supported.
**/
int tcflush (int fd, int QueueSelector);
//int tcsendbreak (int, int);
//pid_t tcgetsid (int);
//void cfmakeraw (struct termios *);
//int cfsetspeed (struct termios *, speed_t);
__END_DECLS
/* Input values for UEFI Keyboard Scan Codes.
The UEFI Keyboard Scan Codes are mapped into the upper range of the Unicode
Private Use Area so that the characters can be inserted into the input stream
and treated the same as any other character.
These values are only used for input. If these codes are output to the
console, or another interactive I/O device, the behavior will depend upon
the current locale and UEFI character set loaded.
*/
typedef enum {
TtySpecKeyMin = 0xF7F0,
/* This area is reserved for use by internal I/O software.
At least 4 values must exist between TtySpecKeyMin and TtyFunKeyMin.
*/
TtyFunKeyMin = 0xF7FA,
TtyKeyEject = 0xF7FA,
TtyRecovery, TtyToggleDisplay, TtyHibernate,
TtySuspend, TtyBrightnessDown, TtyBrightnessUp,
TtyVolumeDown = 0xF87F,
TtyVolumeUp, TtyMute,
TtyF24 = 0xF88D,
TtyF23, TtyF22, TtyF21, TtyF20,
TtyF19, TtyF18, TtyF17, TtyF16,
TtyF15, TtyF14, TtyF13,
TtyEscape = 0xF8E9,
TtyF12, TtyF11, TtyF10, TtyF9,
TtyF8, TtyF7, TtyF6, TtyF5,
TtyF4, TtyF3, TtyF2, TtyF1,
TtyPageDown, TtyPageUp, TtyDelete, TtyInsert,
TtyEnd, TtyHome, TtyLeftArrow, TtyRightArrow,
TtyDownArrow,
TtyUpArrow = 0xF8FF,
TtyFunKeyMax = 0xF900
} TtyFunKey;
// Non-UEFI character definitions
#define CHAR_EOT 0x0004 /* End of Text (EOT) character -- Unix End-of-File character */
#define CHAR_SUB 0x001a /* MSDOS End-of-File character */
#define CHAR_ESC 0x001b /* Escape (ESC) character */
#endif /* !_SYS_TERMIOS_H_ */
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