ioctl.h File Reference

ioctl Implementation More...

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Macros
#define	_IO(type, nr)   ((((type) & 0xFFFF) << 16)|((nr) & 0xFFFF))
	Generate an ioctl Command Code.

Functions
int	ioctl (int fd, unsigned long cmd, void *argp)
	Perform IO Control Request.

Detailed Description

ioctl Implementation

Author

gamemasterplc gamem.nosp@m.aste.nosp@m.rplc@.nosp@m.gmai.nosp@m.l.com

Macro Definition Documentation

_IO

#define _IO	(		type,
			nr
	)		((((type) & 0xFFFF) << 16)|((nr) & 0xFFFF))

Generate an ioctl Command Code.

Parameters

[in]	type	A 16-bit number, often a character literal, specific to a subsystem or driver
[in]	nr	A 16-bit number identifying the specific command, unique for a given value of 'type'

Returns

An ioctl Command Code

Function Documentation

ioctl()

int ioctl	(	int	fd,
		unsigned long	cmd,
		void *	argp
	)

Perform IO Control Request.

Parameters

[in]	fd	File handle
[in]	cmd	Request ioctl command code
[in]	argp	Pointer to a request-specific data structure

Returns

Zero on success, or a negative value on error.