ioctls.h

Glibc 2.3.2源代码(解压后有100多M)

/* Copyright (C) 1992,93,96,97,98,99,2001 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 Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#ifndef __BITS_IOCTLS_H
#define __BITS_IOCTLS_H	1

#if !defined _HURD_IOCTL_H && !defined _SYS_IOCTL_H
# error "Never use <bits/ioctls.h> directly; include <hurd/ioctl.h> instead."
#endif

/* These macros are also defined in <bits/termios.h> (with numerically
   identical values) but this serves to shut up cpp's complaining. */
#ifdef MDMBUF
# undef MDMBUF
#endif
#ifdef ECHO
# undef ECHO
#endif
#ifdef TOSTOP
# undef TOSTOP
#endif
#ifdef FLUSHO
# undef FLUSHO
#endif
#ifdef PENDIN
# undef PENDIN
#endif
#ifdef NOFLSH
# undef NOFLSH
#endif

/* Hurd ioctl request are made up of several fields:

    10987654321098765432109876543210
    IOt0t1t2cc0c0cc1c1cc2ggggccccccc

     bits [31,30]: inout direction (enum __ioctl_dir)
     bits [29,11]: type encoding as follows; zero count indicates omitted datum
	  [29,28]: datum #0 type (enum __ioctl_datum)
	  [27,26]: datum #1 type (enum __ioctl_datum)
	  [24,25]: datum #2 type (enum __ioctl_datum)
	  [23,19]: datum #0 count	[0,31]
	  [18,14]: datum #1 count [0,31]
	  [13,11]: datum #2 count [0,3]
     bits [07,10]: group (letter - 'f': ['f','v'])
     bits [00,06]: command	[0,127]

   The following macros construct and dissect these fields.  */

enum __ioctl_dir
  {
    IOC_VOID = 0,		/* No parameters.  */
    IOC_OUT = 1,		/* Data is written into the user's buffer.  */
    IOC_IN = 2,			/* Data is read from the user's buffer.  */
    IOC_INOUT = (IOC_IN|IOC_OUT)
  };

enum __ioctl_datum { IOC_8, IOC_16, IOC_32, IOC_64 };

/* Construct an ioctl from constructed type plus other fields.  */
#define	_IOC(inout, group, num, type) \
  ((num) | ((((group) - 'f') | ((type) | (inout) << 19) << 4) << 7))

/* Dissect an ioctl into its component fields.  */
#define _IOC_INOUT(request)	(((unsigned int) (request) >> 30) & IOC_INOUT)
#define _IOC_GROUP(request)	('f' + (((unsigned int) (request) >> 7) & 0xf))
#define _IOC_COMMAND(request)	((unsigned int) (request) & 0x7f)
#define _IOC_TYPE(request)	(((unsigned int) (request) >> 11) & 0x7ffff)
#define _IOC_NOTYPE(request)	((unsigned int) (request) & 0x3ff)

/* Construct a type information field from
   the broken-out type and count fields.  */
#define	_IOT(t0, c0, t1, c1, t2, c2) \
  ((c2) | (((c1) | ((c0) | ((t2) | ((t1) | (t0) << 2) << 2) << 5) << 5) << 3))

/* Dissect a type information field into the type and count fields.  */
#define	_IOT_TYPE0(type)	(((unsigned int) (type) >> 17) & 3)
#define	_IOT_TYPE1(type)	(((unsigned int) (type) >> 15) & 3)
#define	_IOT_TYPE2(type)	(((unsigned int) (type) >> 13) & 3)
#define	_IOT_COUNT0(type)	(((unsigned int) (type) >> 8) & 0x1f)
#define	_IOT_COUNT1(type)	(((unsigned int) (type) >> 3) & 0x1f)
#define	_IOT_COUNT2(type)	(((unsigned int) (type) >> 0) & 7)

/* Construct an ioctl from all the broken-out fields.  */
#define	_IOCT(inout, group, num, t0, c0, t1, c1, t2, c2)		      \
  _IOC ((inout), (group), (num), _IOT ((t0), (c0), (t1), (c1), (t2), (c2)))

/* Construct an individual type field for TYPE.  */
#define _IOTS(type)	\
  (sizeof (type) == 8 ? IOC_64 : (sizeof (type) >> 1))

/* Construct a type information field for
   a single argument of the scalar TYPE.  */
#define	_IOT_SIMPLE(type)	_IOT (_IOTS (type), 1, 0, 0, 0, 0)

/* Basic C types.  */
#define	_IOT__IOTBASE_int	_IOT_SIMPLE (int)
#define	_IOT__IOTBASE_char	_IOT_SIMPLE (char)
#define	_IOT__IOTBASE_short	_IOT_SIMPLE (short)


/* Standard flavors of ioctls.
   _IOT_foobar is defined either in this file,
   or where struct foobar is defined.  */
#define	_IO(g, n)	_IOC (IOC_VOID, (g), (n), 0)
#define	_IOR(g, n, t)	_IOC (IOC_OUT, (g), (n), _IOC_ENCODE_TYPE (t))
#define	_IOW(g, n, t)	_IOC (IOC_IN, (g), (n), _IOC_ENCODE_TYPE (t))
#define	_IOWR(g, n, t)	_IOC (IOC_INOUT, (g), (n), _IOC_ENCODE_TYPE (t))

/* These macros do some preprocessor gymnastics to turn a TYPESPEC of
   `struct foobar' into the identifier `_IOT_foobar', which is generally
   defined using `_IOT' (above) in whatever file defines `struct foobar'.
   For a TYPESPEC that does not begin with `struct' produces a different
   identifier: `int' produces `_IOT__IOTBASE_int'.  These identifiers
   are defined for the basic C types above.  */
#define _IOC_ENCODE_TYPE(typespec)	_IOC_ENCODE_TYPE_1(_IOTBASE_##typespec)
#define _IOTBASE_struct
#define _IOC_ENCODE_TYPE_1(typespec)	_IOC_ENCODE_TYPE_2(typespec)
#define _IOC_ENCODE_TYPE_2(typespec)	_IOT_##typespec


/* ioctls verbatim from 4.4 <sys/ioctl.h>.  */

#define	TIOCMODG	_IOR('t', 3, int)	/* get modem control state */
#define	TIOCMODS	_IOW('t', 4, int)	/* set modem control state */
#define		TIOCM_LE	0001		/* line enable */
#define		TIOCM_DTR	0002		/* data terminal ready */
#define		TIOCM_RTS	0004		/* request to send */
#define		TIOCM_ST	0010		/* secondary transmit */
#define		TIOCM_SR	0020		/* secondary receive */
#define		TIOCM_CTS	0040		/* clear to send */
#define		TIOCM_CAR	0100		/* carrier detect */
#define		TIOCM_CD	TIOCM_CAR
#define		TIOCM_RNG	0200		/* ring */
#define		TIOCM_RI	TIOCM_RNG
#define		TIOCM_DSR	0400		/* data set ready */
						/* 8-10 compat */
#define	TIOCEXCL	_IO('t', 13)		/* set exclusive use of tty */
#define	TIOCNXCL	_IO('t', 14)		/* reset exclusive use of tty */
						/* 15 unused */
#define	TIOCFLUSH	_IOW('t', 16, int)	/* flush buffers */
						/* 17-18 compat */
#define	TIOCGETA	_IOR('t', 19, struct termios) /* get termios struct */
#define	TIOCSETA	_IOW('t', 20, struct termios) /* set termios struct */
#define	TIOCSETAW	_IOW('t', 21, struct termios) /* drain output, set */
#define	TIOCSETAF	_IOW('t', 22, struct termios) /* drn out, fls in, set */
#define	TIOCGETD	_IOR('t', 26, int)	/* get line discipline */
#define	TIOCSETD	_IOW('t', 27, int)	/* set line discipline */
						/* 127-124 compat */
#define	TIOCSBRK	_IO('t', 123)		/* set break bit */
#define	TIOCCBRK	_IO('t', 122)		/* clear break bit */
#define	TIOCSDTR	_IO('t', 121)		/* set data terminal ready */
#define	TIOCCDTR	_IO('t', 120)		/* clear data terminal ready */
#define	TIOCGPGRP	_IOR('t', 119, int)	/* get pgrp of tty */
#define	TIOCSPGRP	_IOW('t', 118, int)	/* set pgrp of tty */
						/* 117-116 compat */
#define	TIOCOUTQ	_IOR('t', 115, int)	/* output queue size */
#define	TIOCSTI		_IOW('t', 114, char)	/* simulate terminal input */
#define	TIOCNOTTY	_IO('t', 113)		/* void tty association */
#define	TIOCPKT		_IOW('t', 112, int)	/* pty: set/clear packet mode */
#define		TIOCPKT_DATA		0x00	/* data packet */
#define		TIOCPKT_FLUSHREAD	0x01	/* flush packet */
#define		TIOCPKT_FLUSHWRITE	0x02	/* flush packet */
#define		TIOCPKT_STOP		0x04	/* stop output */
#define		TIOCPKT_START		0x08	/* start output */
#define		TIOCPKT_NOSTOP		0x10	/* no more ^S, ^Q */
#define		TIOCPKT_DOSTOP		0x20	/* now do ^S ^Q */
#define		TIOCPKT_IOCTL		0x40	/* state change of pty driver */
#define	TIOCSTOP	_IO('t', 111)		/* stop output, like ^S */
#define	TIOCSTART	_IO('t', 110)		/* start output, like ^Q */
#define	TIOCMSET	_IOW('t', 109, int)	/* set all modem bits */