C++ (Cpp) FsdGetFsAttributeInformation Examples

Example #1

File: volume.c Project: Strongc/reactos

/*
 * FUNCTION: Retrieve the specified volume information
 */
NTSTATUS
VfatQueryVolumeInformation(
    PVFAT_IRP_CONTEXT IrpContext)
{
    FS_INFORMATION_CLASS FsInformationClass;
    NTSTATUS RC = STATUS_SUCCESS;
    PVOID SystemBuffer;
    ULONG BufferLength;

    /* PRECONDITION */
    ASSERT(IrpContext);

    DPRINT("VfatQueryVolumeInformation(IrpContext %p)\n", IrpContext);

    if (!ExAcquireResourceSharedLite(&((PDEVICE_EXTENSION)IrpContext->DeviceObject->DeviceExtension)->DirResource,
                                     BooleanFlagOn(IrpContext->Flags, IRPCONTEXT_CANWAIT)))
    {
        DPRINT1("DirResource failed!\n");
        return VfatMarkIrpContextForQueue(IrpContext);
    }

    /* INITIALIZATION */
    FsInformationClass = IrpContext->Stack->Parameters.QueryVolume.FsInformationClass;
    BufferLength = IrpContext->Stack->Parameters.QueryVolume.Length;
    SystemBuffer = IrpContext->Irp->AssociatedIrp.SystemBuffer;

    DPRINT("FsInformationClass %d\n", FsInformationClass);
    DPRINT("SystemBuffer %p\n", SystemBuffer);

    switch (FsInformationClass)
    {
        case FileFsVolumeInformation:
            RC = FsdGetFsVolumeInformation(IrpContext->DeviceObject,
                                           SystemBuffer,
                                           &BufferLength);
            break;

        case FileFsAttributeInformation:
            RC = FsdGetFsAttributeInformation(IrpContext->DeviceObject->DeviceExtension,
                                              SystemBuffer,
                                              &BufferLength);
            break;

        case FileFsSizeInformation:
            RC = FsdGetFsSizeInformation(IrpContext->DeviceObject,
                                         SystemBuffer,
                                         &BufferLength);
            break;

        case FileFsDeviceInformation:
            RC = FsdGetFsDeviceInformation(IrpContext->DeviceObject,
                                           SystemBuffer,
                                           &BufferLength);
            break;

        case FileFsFullSizeInformation:
            RC = FsdGetFsFullSizeInformation(IrpContext->DeviceObject,
                                             SystemBuffer,
                                             &BufferLength);
            break;

        default:
            RC = STATUS_NOT_SUPPORTED;
    }

    ExReleaseResourceLite(&((PDEVICE_EXTENSION)IrpContext->DeviceObject->DeviceExtension)->DirResource);

    IrpContext->Irp->IoStatus.Information =
        IrpContext->Stack->Parameters.QueryVolume.Length - BufferLength;

    return RC;
}

Example #2

File: volume.c Project: hoangduit/reactos

/*
 * FUNCTION: Retrieve the specified volume information
 */
NTSTATUS
VfatQueryVolumeInformation(
    PVFAT_IRP_CONTEXT IrpContext)
{
    FS_INFORMATION_CLASS FsInformationClass;
    NTSTATUS RC = STATUS_SUCCESS;
    PVOID SystemBuffer;
    ULONG BufferLength;

    /* PRECONDITION */
    ASSERT(IrpContext);

    DPRINT("VfatQueryVolumeInformation(IrpContext %p)\n", IrpContext);

    if (!ExAcquireResourceSharedLite(&((PDEVICE_EXTENSION)IrpContext->DeviceObject->DeviceExtension)->DirResource,
                                     (BOOLEAN)(IrpContext->Flags & IRPCONTEXT_CANWAIT)))
    {
        return VfatQueueRequest(IrpContext);
    }

    /* INITIALIZATION */
    FsInformationClass = IrpContext->Stack->Parameters.QueryVolume.FsInformationClass;
    BufferLength = IrpContext->Stack->Parameters.QueryVolume.Length;
    SystemBuffer = IrpContext->Irp->AssociatedIrp.SystemBuffer;

    DPRINT("FsInformationClass %d\n", FsInformationClass);
    DPRINT("SystemBuffer %p\n", SystemBuffer);

    switch (FsInformationClass)
    {
        case FileFsVolumeInformation:
            RC = FsdGetFsVolumeInformation(IrpContext->DeviceObject,
                                           SystemBuffer,
                                           &BufferLength);
            break;

        case FileFsAttributeInformation:
            RC = FsdGetFsAttributeInformation(IrpContext->DeviceObject->DeviceExtension,
                                              SystemBuffer,
                                              &BufferLength);
            break;

        case FileFsSizeInformation:
            RC = FsdGetFsSizeInformation(IrpContext->DeviceObject,
                                         SystemBuffer,
                                         &BufferLength);
            break;

        case FileFsDeviceInformation:
            RC = FsdGetFsDeviceInformation(IrpContext->DeviceObject,
                                           SystemBuffer,
                                           &BufferLength);
            break;

        default:
            RC = STATUS_NOT_SUPPORTED;
    }

    ExReleaseResourceLite(&((PDEVICE_EXTENSION)IrpContext->DeviceObject->DeviceExtension)->DirResource);
    IrpContext->Irp->IoStatus.Status = RC;
    if (NT_SUCCESS(RC))
        IrpContext->Irp->IoStatus.Information =
            IrpContext->Stack->Parameters.QueryVolume.Length - BufferLength;
    else
        IrpContext->Irp->IoStatus.Information = 0;
    IoCompleteRequest(IrpContext->Irp, IO_NO_INCREMENT);
    VfatFreeIrpContext(IrpContext);

    return RC;
}