ioevent.c File Reference

#include <ntoskrnl.h>
#include <debug.h>

Include dependency graph for ioevent.c:

Go to the source code of this file.

Functions
PKEVENT NTAPI	IopCreateEvent (IN PUNICODE_STRING EventName, IN PHANDLE EventHandle, IN EVENT_TYPE Type)
PKEVENT NTAPI	IoCreateNotificationEvent (IN PUNICODE_STRING EventName, IN PHANDLE EventHandle)
PKEVENT NTAPI	IoCreateSynchronizationEvent (IN PUNICODE_STRING EventName, IN PHANDLE EventHandle)

Function Documentation

IoCreateNotificationEvent()

PKEVENT NTAPI IoCreateNotificationEvent	(	IN PUNICODE_STRING	EventName,
		IN PHANDLE	EventHandle
	)

Definition at line 70 of file ioevent.c.

{
    /* Call the internal API */
    return IopCreateEvent(EventName, EventHandle, NotificationEvent);
}

Referenced by START_TEST().

IoCreateSynchronizationEvent()

PKEVENT NTAPI IoCreateSynchronizationEvent	(	IN PUNICODE_STRING	EventName,
		IN PHANDLE	EventHandle
	)

Definition at line 82 of file ioevent.c.

{
    /* Call the internal API */
    return IopCreateEvent(EventName, EventHandle, SynchronizationEvent);
}

Referenced by InitializeGlobalData(), and START_TEST().

IopCreateEvent()

PKEVENT NTAPI IopCreateEvent	(	IN PUNICODE_STRING	EventName,
		IN PHANDLE	EventHandle,
		IN EVENT_TYPE	Type
	)

Definition at line 19 of file ioevent.c.

{
    OBJECT_ATTRIBUTES ObjectAttributes;
    PKEVENT Event;
    HANDLE Handle;
    NTSTATUS Status;
    PAGED_CODE();
 
    /* Initialize the object attributes */
    InitializeObjectAttributes(&ObjectAttributes,
                               EventName,
                               OBJ_OPENIF | OBJ_KERNEL_HANDLE,
                               NULL,
                               NULL);
 
    /* Create the event */
    Status = ZwCreateEvent(&Handle,
                           EVENT_ALL_ACCESS,
                           &ObjectAttributes,
                           Type,
                           TRUE);
    if (!NT_SUCCESS(Status)) return NULL;
 
    /* Get a handle to it */
    Status = ObReferenceObjectByHandle(Handle,
                                       0,
                                       ExEventObjectType,
                                       KernelMode,
                                       (PVOID*)&Event,
                                       NULL);
    if (!NT_SUCCESS(Status))
    {
        ZwClose(Handle);
        return NULL;
    }
 
    /* Dereference the extra count, and return the handle */
    ObDereferenceObject(Event);
    *EventHandle = Handle;
    return Event;
}

Referenced by IoCreateNotificationEvent(), and IoCreateSynchronizationEvent().