#include <IOCTL.H>
Link against: estlib.lib

`_IOW`

_IOW (n, T) (n)

Description

ioctls under EPOC32 are only loosely related to ioctls in other systems The _IOR, _IOW and _IOWR macros are provided for documentation purposes, to indicate the appropriate form of the third parameter

Parameters

`n`
`T`

`_IOR`

_IOR (n, T) (n)

Description

Parameters

`n`
`T`

`_IOWR`

_IOWR (n, T) (n)

Description

Parameters

`n`
`T`

`E32IONREAD`

E32IONREAD _IOR( 1,int)

Description

number of bytes available to be read - cf BSD FIONREAD

`E32IOSELECT`

E32IOSELECT _IOWR(2,int)

Description

ioctl-based form of select with infinite timeout - specify a mask of selectable states and receive back the mask of triggering states

`E32SELECT_READ`

E32SELECT_READ 0x01

Description

`E32SELECT_WRITE`

E32SELECT_WRITE 0x02

Description

`E32SELECT_EXCEPT`

E32SELECT_EXCEPT 0x04

Description

`COMMIOCTL_SETSIGNALS`

COMMIOCTL_SETSIGNALS 1

Description

ioctls for serial port values may change

`COMMIOCTL_GETSIGNALS`

COMMIOCTL_GETSIGNALS 2

Description

`COMMIOCTL_SETCONFIG`

COMMIOCTL_SETCONFIG 3

Description

`COMMIOCTL_GETCONFIG`

COMMIOCTL_GETCONFIG 4

Description

`COMMIOCTL_BREAK`

COMMIOCTL_BREAK 5

Description

`COMMIOCTL_SETREADTIMEOUT`

COMMIOCTL_SETREADTIMEOUT 6

Description

`COMMIOCTL_GETREADTIMEOUT`

COMMIOCTL_GETREADTIMEOUT 7

Description

`COMMIOCTL_SETREADTHRESHOLD`

COMMIOCTL_SETREADTHRESHOLD 8

Description

`COMMIOCTL_GETREADTHRESHOLD`

COMMIOCTL_GETREADTHRESHOLD 9

Description

`COMMIOCTL_SETBUFFERLENGTH`

COMMIOCTL_SETBUFFERLENGTH 10

Description

`COMMIOCTL_GETBUFFERLENGTH`

COMMIOCTL_GETBUFFERLENGTH 11

Description

`COMMIOCTL_NOTIFYSUPPORTED`

COMMIOCTL_NOTIFYSUPPORTED 12

Description

`COMMIOCTL_NOTIFY`

COMMIOCTL_NOTIFY 0x400d

Description

`REAL_COMMIOCTL_NOTIFY`

REAL_COMMIOCTL_NOTIFY 13

Description

`ioctl(int,int,void *)`

IMPORT_C int ioctl(int, int, void *);

Description

Performs a variety of device-specific control functions on device special files.

Parameters

`int`
`int`
`void *`

Return value

int

On Success, returns a value other than -1 that depends upon the STREAMS device control function. On Failure, return -1, errno may be set.