pnp.c File Reference

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

Include dependency graph for pnp.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
NTSTATUS NTAPI	FsRtlNotifyVolumeEvent (IN PFILE_OBJECT FileObject, IN ULONG EventCode)

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 13 of file pnp.c.

Function Documentation

FsRtlNotifyVolumeEvent()

NTSTATUS NTAPI FsRtlNotifyVolumeEvent	(	IN PFILE_OBJECT	FileObject,
		IN ULONG	EventCode
	)

Definition at line 38 of file pnp.c.

{
    NTSTATUS Status;
    LPGUID Guid = NULL;
    PDEVICE_OBJECT DeviceObject = NULL;
    TARGET_DEVICE_CUSTOM_NOTIFICATION Notification;

    Status = IoGetRelatedTargetDevice(FileObject, &DeviceObject);
    if (!NT_SUCCESS(Status))
    {
        return Status;
    }

    Status = STATUS_INVALID_PARAMETER;

    Notification.Version = 1;
    Notification.Size = sizeof(TARGET_DEVICE_CUSTOM_NOTIFICATION);
    /* MSDN says that FileObject must be null
       when calling IoReportTargetDeviceChangeAsynchronous */
    Notification.FileObject = NULL;
    Notification.NameBufferOffset = -1;
    /* Find the good GUID associated with the event */
    switch (EventCode)
    {
        case FSRTL_VOLUME_DISMOUNT:
        {
            Guid = (LPGUID)&GUID_IO_VOLUME_DISMOUNT;
            break;
        }
        case FSRTL_VOLUME_DISMOUNT_FAILED:
        {
            Guid = (LPGUID)&GUID_IO_VOLUME_DISMOUNT_FAILED;
            break;
        }
        case FSRTL_VOLUME_LOCK:
        {
            Guid = (LPGUID)&GUID_IO_VOLUME_LOCK;
            break;
        }
        case FSRTL_VOLUME_LOCK_FAILED:
        {
            Guid = (LPGUID)&GUID_IO_VOLUME_LOCK_FAILED;
            break;
        }
        case FSRTL_VOLUME_MOUNT:
        {
            Guid = (LPGUID)&GUID_IO_VOLUME_MOUNT;
            break;
        }
        case FSRTL_VOLUME_UNLOCK:
        {
            Guid = (LPGUID)&GUID_IO_VOLUME_UNLOCK;
            break;
        }
    }
    if (Guid)
    {
        /* Copy GUID to notification structure and then report the change */
        RtlCopyMemory(&(Notification.Event), Guid, sizeof(GUID));

        if (EventCode == FSRTL_VOLUME_MOUNT)
        {
            IoReportTargetDeviceChangeAsynchronous(DeviceObject,
                                                   &Notification,
                                                   NULL,
                                                   NULL);
        }
        else
        {
            IoReportTargetDeviceChange(DeviceObject,
                                       &Notification);
        }

        Status = STATUS_SUCCESS;
    }
    ObDereferenceObject(DeviceObject);

    return Status;
}

Referenced by _Dispatch_type_(), _Function_class_(), _Requires_lock_held_(), add_device(), dismount_volume(), do_write(), DriverEntry(), FatUnlockVolume(), finish_removing_device(), lock_volume(), mount_vol(), pnp_remove_device(), RawMountVolume(), RawUserFsCtrl(), resize_device(), unlock_volume(), VfatDismountVolume(), VfatLockOrUnlockVolume(), and VfatMount().