Package com.sun.jna.platform.linux

Class Udev.UdevEnumerate

java.lang.Object

com.sun.jna.PointerType

com.sun.jna.platform.linux.Udev.UdevEnumerate

All Implemented Interfaces:

NativeMapped

Enclosing interface:

Udev

public static class Udev.UdevEnumerate
extends PointerType

To enumerate local devices on the system, an enumeration object can be created via Udev.UdevContext.enumerateNew().

Constructor Summary

Constructors

Constructor	Description
UdevEnumerate()

Method Summary

Modifier and Type	Method	Description
int	addMatchSubsystem(String subsystem)	Modify filters of this object to match a subsystem.
Udev.UdevListEntry	getListEntry()	Get the first list entry from this object.
Udev.UdevEnumerate	ref()	Acquire a further reference to this object.
int	scanDevices()	Query this object.
void	unref()	Drop a reference to this object.

Methods inherited from class com.sun.jna.PointerType

equals, fromNative, getPointer, hashCode, nativeType, setPointer, toNative, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

UdevEnumerate

public UdevEnumerate()

Method Detail

ref

public Udev.UdevEnumerate ref()

Acquire a further reference to this object.

Returns:

this object, unmodified.

unref

public void unref()

Drop a reference to this object. Once the reference count hits 0, the context object is destroyed and freed.

addMatchSubsystem

public int addMatchSubsystem(String subsystem)

Modify filters of this object to match a subsystem.

Parameters:

subsystem - The subsystem to match

Returns:

an integer greater than, or equal to, 0 on success.

scanDevices

public int scanDevices()

Query this object. Scans /sys for all devices which match the given filters. No filters will return all currently available devices.

Returns:

an integer greater than, or equal to, 0 on success.

getListEntry

public Udev.UdevListEntry getListEntry()

Get the first list entry from this object.

Returns:

On success, returns the first entry in the list of found devices. If the list is empty, or on failure, NULL is returned.