[newlib-cygwin.git] / winsup / cygwin / include / sys / ioctl.h

/* sys/ioctl.h

This file is part of Cygwin.

This software is a copyrighted work licensed under the terms of the
Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
details. */

/* sys/ioctl.h */

#ifndef _SYS_IOCTL_H
#define _SYS_IOCTL_H

#include <sys/cdefs.h>
#include <sys/termios.h>

__BEGIN_DECLS

/* /dev/windows ioctls */

#define WINDOWS_POST	0	/* Set write() behavior to PostMessage() */
#define WINDOWS_SEND	1	/* Set write() behavior to SendMessage() */
#define WINDOWS_HWND	2	/* Set hWnd for read() calls */

/* Some standard linux defines */

#define _IOC_NRBITS	8
#define _IOC_TYPEBITS	8
#define _IOC_SIZEBITS	14
#define _IOC_DIRBITS	2

#define _IOC_NRMASK	((1 << _IOC_NRBITS)-1)
#define _IOC_TYPEMASK	((1 << _IOC_TYPEBITS)-1)
#define _IOC_SIZEMASK	((1 << _IOC_SIZEBITS)-1)
#define _IOC_DIRMASK	((1 << _IOC_DIRBITS)-1)

#define _IOC_NRSHIFT	0
#define _IOC_TYPESHIFT	(_IOC_NRSHIFT+_IOC_NRBITS)
#define _IOC_SIZESHIFT	(_IOC_TYPESHIFT+_IOC_TYPEBITS)
#define _IOC_DIRSHIFT	(_IOC_SIZESHIFT+_IOC_SIZEBITS)

#define _IOC_NONE	0U
#define _IOC_WRITE	1U
#define _IOC_READ	2U

#define _IOC(dir,type,nr,size) \
  (((dir)	<< _IOC_DIRSHIFT) | \
    +	((type) << _IOC_TYPESHIFT) | \
    +	((nr)	<< _IOC_NRSHIFT) | \
    +	((size) << _IOC_SIZESHIFT))

#define _LINUX_IO(type,nr)		_IOC(_IOC_NONE,(type),(nr),0)
#define _LINUX_IOR(type,nr,size)	_IOC(_IOC_READ,(type),(nr),sizeof(size))
#define _LINUX_IOW(type,nr,size)	_IOC(_IOC_WRITE,(type),(nr),sizeof(size))
#define _LINUX_IOWR(type,nr,size)	_IOC(_IOC_READ|_IOC_WRITE,(type),(nr),sizeof(size))

#ifdef __USE_LINUX_IOCTL_DEFS
# define _IO	_LINUX_IO
# define _IOR	_LINUX_IOR
# define _IOW	_LINUX_IOW
# define _IOWR	_LINUX_IOWR
#endif /*__USE_LINUX_IOCTL_DEFS */

int ioctl (int __fd, int __cmd, ...);

__END_DECLS
#endif
Commit	Line	Data
	1	/* sys/ioctl.h
	2
	3	This file is part of Cygwin.
	4
	5	This software is a copyrighted work licensed under the terms of the
	6	Cygwin license. Please consult the file "CYGWIN_LICENSE" for
	7	details. */
	8
	9	/* sys/ioctl.h */
	10
	11	#ifndef _SYS_IOCTL_H
	12	#define _SYS_IOCTL_H
	13
	14	#include <sys/cdefs.h>
	15	#include <sys/termios.h>
	16
	17	__BEGIN_DECLS
	18
	19	/* /dev/windows ioctls */
	20
	21	#define WINDOWS_POST 0 /* Set write() behavior to PostMessage() */
	22	#define WINDOWS_SEND 1 /* Set write() behavior to SendMessage() */
	23	#define WINDOWS_HWND 2 /* Set hWnd for read() calls */
	24
	25	/* Some standard linux defines */
	26
	27	#define _IOC_NRBITS 8
	28	#define _IOC_TYPEBITS 8
	29	#define _IOC_SIZEBITS 14
	30	#define _IOC_DIRBITS 2
	31
	32	#define _IOC_NRMASK ((1 << _IOC_NRBITS)-1)
	33	#define _IOC_TYPEMASK ((1 << _IOC_TYPEBITS)-1)
	34	#define _IOC_SIZEMASK ((1 << _IOC_SIZEBITS)-1)
	35	#define _IOC_DIRMASK ((1 << _IOC_DIRBITS)-1)
	36
	37	#define _IOC_NRSHIFT 0
	38	#define _IOC_TYPESHIFT (_IOC_NRSHIFT+_IOC_NRBITS)
	39	#define _IOC_SIZESHIFT (_IOC_TYPESHIFT+_IOC_TYPEBITS)
	40	#define _IOC_DIRSHIFT (_IOC_SIZESHIFT+_IOC_SIZEBITS)
	41
	42	#define _IOC_NONE 0U
	43	#define _IOC_WRITE 1U
	44	#define _IOC_READ 2U
	45
	46	#define _IOC(dir,type,nr,size) \
	47	(((dir) << _IOC_DIRSHIFT) \| \
	48	+ ((type) << _IOC_TYPESHIFT) \| \
	49	+ ((nr) << _IOC_NRSHIFT) \| \
	50	+ ((size) << _IOC_SIZESHIFT))
	51
	52	#define _LINUX_IO(type,nr) _IOC(_IOC_NONE,(type),(nr),0)
	53	#define _LINUX_IOR(type,nr,size) _IOC(_IOC_READ,(type),(nr),sizeof(size))
	54	#define _LINUX_IOW(type,nr,size) _IOC(_IOC_WRITE,(type),(nr),sizeof(size))
	55	#define _LINUX_IOWR(type,nr,size) _IOC(_IOC_READ\|_IOC_WRITE,(type),(nr),sizeof(size))
	56
	57	#ifdef __USE_LINUX_IOCTL_DEFS
	58	# define _IO _LINUX_IO
	59	# define _IOR _LINUX_IOR
	60	# define _IOW _LINUX_IOW
	61	# define _IOWR _LINUX_IOWR
	62	#endif /__USE_LINUX_IOCTL_DEFS /
	63
	64	int ioctl (int __fd, int __cmd, ...);
	65
	66	__END_DECLS
	67	#endif