IFS 学习心得(二):驱动程序的基本结构.

  驱动程序和一般的win32程序一样，有一个主函数：

是NTSTATUS  DriverEntry (IN PDRIVER_OBJECT DriverObject,IN PUNICODE_STRING RegistryPath)

win32程序主要做的是对各种你需要的消息做处理，而驱动程序是对你需要的IRP做处理。

在DriverEntry中一般有这样的代码段：

 for (i = 0; i <= IRP_MJ_MAXIMUM_FUNCTION; i++) {

        DriverObject->MajorFunction = SfPassThrough;
    }

    //
    //  We will use SfCreate for all the create operations
    //

    DriverObject->MajorFunction[IRP_MJ_CREATE] = SfCreate;
    DriverObject->MajorFunction[IRP_MJ_CREATE_NAMED_PIPE] = SfCreate;
    DriverObject->MajorFunction[IRP_MJ_CREATE_MAILSLOT] = SfCreate;
    
    DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] = SfFsControl;
    DriverObject->MajorFunction[IRP_MJ_CLEANUP] = SfCleanupClose;
    DriverObject->MajorFunction[IRP_MJ_CLOSE] = SfCleanupClose;

    SfCreate、SfCleanupClose等是你要写的函数，也可以说是你写驱动的主要工作。

当然，可能还要有：
   fastIoDispatch->SizeOfFastIoDispatch = sizeof( FAST_IO_DISPATCH );
    fastIoDispatch->FastIoCheckIfPossible = SfFastIoCheckIfPossible;
    fastIoDispatch->FastIoRead = SfFastIoRead;
    fastIoDispatch->FastIoWrite = SfFastIoWrite;
    fastIoDispatch->FastIoQueryBasicInfo = SfFastIoQueryBasicInfo;
    fastIoDispatch->FastIoQueryStandardInfo = SfFastIoQueryStandardInfo;
    fastIoDispatch->FastIoLock = SfFastIoLock;
    fastIoDispatch->FastIoUnlockSingle = SfFastIoUnlockSingle;
    fastIoDispatch->FastIoUnlockAll = SfFastIoUnlockAll;
    fastIoDispatch->FastIoUnlockAllByKey = SfFastIoUnlockAllByKey;
    fastIoDispatch->FastIoDeviceControl = SfFastIoDeviceControl;
    fastIoDispatch->FastIoDetachDevice = SfFastIoDetachDevice;
    fastIoDispatch->FastIoQueryNetworkOpenInfo = SfFastIoQueryNetworkOpenInfo;
    fastIoDispatch->MdlRead = SfFastIoMdlRead;
    fastIoDispatch->MdlReadComplete = SfFastIoMdlReadComplete;
    fastIoDispatch->PrepareMdlWrite = SfFastIoPrepareMdlWrite;
    fastIoDispatch->MdlWriteComplete = SfFastIoMdlWriteComplete;
    fastIoDispatch->FastIoReadCompressed = SfFastIoReadCompressed;
    fastIoDispatch->FastIoWriteCompressed = SfFastIoWriteCompressed;
    fastIoDispatch->MdlReadCompleteCompressed = SfFastIoMdlReadCompleteCompressed;
    fastIoDispatch->MdlWriteCompleteCompressed = SfFastIoMdlWriteCompleteCompressed;
    fastIoDispatch->FastIoQueryOpen = SfFastIoQueryOpen;

    DriverObject->FastIoDispatch = fastIoDispatch;

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这是我的一些新的心得体会，不知有没有问题，望老牛指点和指正。