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453 lines
12 KiB
C
Executable file
453 lines
12 KiB
C
Executable file
/*++
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Copyright (c) 1989-2000 Microsoft Corporation
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Module Name:
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CdInit.c
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Abstract:
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This module implements the DRIVER_INITIALIZATION routine for Cdfs
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--*/
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#include "cdprocs.h"
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//
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// The Bug check file id for this module
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//
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#define BugCheckFileId (CDFS_BUG_CHECK_CDINIT)
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// Tell prefast the function type.
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DRIVER_INITIALIZE DriverEntry;
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NTSTATUS
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NTAPI /* ReactOS Change: GCC Does not support STDCALL by default */
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DriverEntry(
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_In_ PDRIVER_OBJECT DriverObject,
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_In_ PUNICODE_STRING RegistryPath
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);
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// tell prefast this is a driver unload function
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DRIVER_UNLOAD CdUnload;
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VOID
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NTAPI /* ReactOS Change: GCC Does not support STDCALL by default */
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CdUnload(
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_In_ PDRIVER_OBJECT DriverObject
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);
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NTSTATUS
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CdInitializeGlobalData (
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_In_ PDRIVER_OBJECT DriverObject,
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_In_ PDEVICE_OBJECT FileSystemDeviceObject
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#ifdef __REACTOS__
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,
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IN PDEVICE_OBJECT HddFileSystemDeviceObject
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#endif
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);
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(INIT, DriverEntry)
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#pragma alloc_text(PAGE, CdUnload)
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#pragma alloc_text(INIT, CdInitializeGlobalData)
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#endif
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//
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// Local support routine
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//
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NTSTATUS
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NTAPI /* ReactOS Change: GCC Does not support STDCALL by default */
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DriverEntry(
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_In_ PDRIVER_OBJECT DriverObject,
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_In_ PUNICODE_STRING RegistryPath
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)
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/*++
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Routine Description:
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This is the initialization routine for the Cdrom file system
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device driver. This routine creates the device object for the FileSystem
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device and performs all other driver initialization.
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Arguments:
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DriverObject - Pointer to driver object created by the system.
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Return Value:
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NTSTATUS - The function value is the final status from the initialization
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operation.
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--*/
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{
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NTSTATUS Status;
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UNICODE_STRING UnicodeString;
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PDEVICE_OBJECT CdfsFileSystemDeviceObject;
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FS_FILTER_CALLBACKS FilterCallbacks;
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#ifdef __REACTOS__
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PDEVICE_OBJECT HddFileSystemDeviceObject;
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#endif
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UNREFERENCED_PARAMETER( RegistryPath );
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//
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// Create the device object.
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//
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RtlInitUnicodeString( &UnicodeString, L"\\Cdfs" );
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Status = IoCreateDevice( DriverObject,
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0,
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&UnicodeString,
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FILE_DEVICE_CD_ROM_FILE_SYSTEM,
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0,
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FALSE,
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&CdfsFileSystemDeviceObject );
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if (!NT_SUCCESS( Status )) {
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return Status;
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}
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#ifdef __REACTOS__
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//
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// Create the HDD device object.
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//
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RtlInitUnicodeString( &UnicodeString, L"\\CdfsHdd" );
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Status = IoCreateDevice( DriverObject,
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0,
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&UnicodeString,
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FILE_DEVICE_DISK_FILE_SYSTEM,
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0,
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FALSE,
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&HddFileSystemDeviceObject );
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if (!NT_SUCCESS( Status )) {
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IoDeleteDevice (CdfsFileSystemDeviceObject);
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return Status;
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}
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#endif
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#ifdef _MSC_VER
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#pragma prefast(push)
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#pragma prefast(disable: 28155, "the dispatch routine has the correct type, prefast is just being paranoid.")
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#pragma prefast(disable: 28168, "the dispatch routine has the correct type, prefast is just being paranoid.")
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#pragma prefast(disable: 28169, "the dispatch routine has the correct type, prefast is just being paranoid.")
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#pragma prefast(disable: 28175, "we're allowed to change these.")
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#endif
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DriverObject->DriverUnload = CdUnload;
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//
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// Note that because of the way data caching is done, we set neither
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// the Direct I/O or Buffered I/O bit in DeviceObject->Flags. If
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// data is not in the cache, or the request is not buffered, we may,
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// set up for Direct I/O by hand.
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//
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//
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// Initialize the driver object with this driver's entry points.
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//
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// NOTE - Each entry in the dispatch table must have an entry in
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// the Fsp/Fsd dispatch switch statements.
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//
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DriverObject->MajorFunction[IRP_MJ_CREATE] =
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DriverObject->MajorFunction[IRP_MJ_CLOSE] =
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DriverObject->MajorFunction[IRP_MJ_READ] =
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DriverObject->MajorFunction[IRP_MJ_WRITE] =
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DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] =
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DriverObject->MajorFunction[IRP_MJ_SET_INFORMATION] =
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DriverObject->MajorFunction[IRP_MJ_QUERY_VOLUME_INFORMATION]=
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DriverObject->MajorFunction[IRP_MJ_DIRECTORY_CONTROL] =
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DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] =
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DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] =
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DriverObject->MajorFunction[IRP_MJ_LOCK_CONTROL] =
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DriverObject->MajorFunction[IRP_MJ_CLEANUP] =
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DriverObject->MajorFunction[IRP_MJ_PNP] =
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DriverObject->MajorFunction[IRP_MJ_SHUTDOWN] = (PDRIVER_DISPATCH) CdFsdDispatch;
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#ifdef _MSC_VER
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#pragma prefast(pop)
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#pragma prefast(suppress: 28175, "this is a file system driver, we're allowed to touch FastIoDispatch.")
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#endif
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DriverObject->FastIoDispatch = &CdFastIoDispatch;
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//
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// Initialize the filter callbacks we use.
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//
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RtlZeroMemory( &FilterCallbacks,
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sizeof(FS_FILTER_CALLBACKS) );
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FilterCallbacks.SizeOfFsFilterCallbacks = sizeof(FS_FILTER_CALLBACKS);
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FilterCallbacks.PreAcquireForSectionSynchronization = CdFilterCallbackAcquireForCreateSection;
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Status = FsRtlRegisterFileSystemFilterCallbacks( DriverObject,
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&FilterCallbacks );
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if (!NT_SUCCESS( Status )) {
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IoDeleteDevice( CdfsFileSystemDeviceObject );
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#ifdef __REACTOS__
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IoDeleteDevice (HddFileSystemDeviceObject);
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#endif
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return Status;
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}
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//
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// Initialize the global data structures
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//
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#ifndef __REACTOS__
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Status = CdInitializeGlobalData( DriverObject, CdfsFileSystemDeviceObject );
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#else
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Status = CdInitializeGlobalData( DriverObject, CdfsFileSystemDeviceObject, HddFileSystemDeviceObject );
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#endif
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if (!NT_SUCCESS (Status)) {
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IoDeleteDevice (CdfsFileSystemDeviceObject);
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#ifdef __REACTOS__
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IoDeleteDevice (HddFileSystemDeviceObject);
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#endif
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return Status;
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}
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//
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// Register the file system as low priority with the I/O system. This will cause
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// CDFS to receive mount requests after a) other filesystems currently registered
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// and b) other normal priority filesystems that may be registered later.
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//
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CdfsFileSystemDeviceObject->Flags |= DO_LOW_PRIORITY_FILESYSTEM;
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#ifdef __REACTOS__
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HddFileSystemDeviceObject->Flags |= DO_LOW_PRIORITY_FILESYSTEM;
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#endif
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IoRegisterFileSystem( CdfsFileSystemDeviceObject );
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ObReferenceObject (CdfsFileSystemDeviceObject);
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#ifdef __REACTOS__
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IoRegisterFileSystem( HddFileSystemDeviceObject );
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ObReferenceObject (HddFileSystemDeviceObject);
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#endif
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#ifdef CDFS_TELEMETRY_DATA
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//
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// Initialize Telemetry
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//
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CdInitializeTelemetry();
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#endif
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//
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// And return to our caller
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//
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return( STATUS_SUCCESS );
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}
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VOID
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NTAPI /* ReactOS Change: GCC Does not support STDCALL by default */
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CdUnload(
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_In_ PDRIVER_OBJECT DriverObject
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)
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/*++
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Routine Description:
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This routine unload routine for CDFS.
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Arguments:
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DriverObject - Supplies the driver object for CDFS.
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Return Value:
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None.
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--*/
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{
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PIRP_CONTEXT IrpContext;
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PAGED_CODE();
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UNREFERENCED_PARAMETER( DriverObject );
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//
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// Free any IRP contexts
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//
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while (1) {
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IrpContext = (PIRP_CONTEXT) PopEntryList( &CdData.IrpContextList) ;
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if (IrpContext == NULL) {
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break;
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}
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CdFreePool(&IrpContext);
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}
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IoFreeWorkItem (CdData.CloseItem);
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ExDeleteResourceLite( &CdData.DataResource );
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ObDereferenceObject (CdData.FileSystemDeviceObject);
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#ifdef __REACTOS__
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ObDereferenceObject (CdData.HddFileSystemDeviceObject);
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#endif
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}
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//
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// Local support routine
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//
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NTSTATUS
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CdInitializeGlobalData (
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_In_ PDRIVER_OBJECT DriverObject,
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_In_ PDEVICE_OBJECT FileSystemDeviceObject
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#ifdef __REACTOS__
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,
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IN PDEVICE_OBJECT HddFileSystemDeviceObject
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#endif
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)
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/*++
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Routine Description:
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This routine initializes the global cdfs data structures.
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Arguments:
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DriverObject - Supplies the driver object for CDFS.
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FileSystemDeviceObject - Supplies the device object for CDFS.
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Return Value:
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None.
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--*/
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{
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//
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// Start by initializing the FastIoDispatch Table.
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//
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RtlZeroMemory( &CdFastIoDispatch, sizeof( FAST_IO_DISPATCH ));
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CdFastIoDispatch.SizeOfFastIoDispatch = sizeof(FAST_IO_DISPATCH);
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#ifdef _MSC_VER
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#pragma prefast(push)
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#pragma prefast(disable:28155, "these are all correct")
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#endif
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CdFastIoDispatch.FastIoCheckIfPossible = CdFastIoCheckIfPossible; // CheckForFastIo
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CdFastIoDispatch.FastIoRead = FsRtlCopyRead; // Read
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CdFastIoDispatch.FastIoQueryBasicInfo = CdFastQueryBasicInfo; // QueryBasicInfo
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CdFastIoDispatch.FastIoQueryStandardInfo = CdFastQueryStdInfo; // QueryStandardInfo
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CdFastIoDispatch.FastIoLock = CdFastLock; // Lock
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CdFastIoDispatch.FastIoUnlockSingle = CdFastUnlockSingle; // UnlockSingle
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CdFastIoDispatch.FastIoUnlockAll = CdFastUnlockAll; // UnlockAll
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CdFastIoDispatch.FastIoUnlockAllByKey = CdFastUnlockAllByKey; // UnlockAllByKey
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//
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// This callback has been replaced by CdFilterCallbackAcquireForCreateSection.
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//
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CdFastIoDispatch.AcquireFileForNtCreateSection = NULL;
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CdFastIoDispatch.ReleaseFileForNtCreateSection = CdReleaseForCreateSection;
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CdFastIoDispatch.FastIoQueryNetworkOpenInfo = CdFastQueryNetworkInfo; // QueryNetworkInfo
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CdFastIoDispatch.MdlRead = FsRtlMdlReadDev;
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CdFastIoDispatch.MdlReadComplete = FsRtlMdlReadCompleteDev;
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CdFastIoDispatch.PrepareMdlWrite = FsRtlPrepareMdlWriteDev;
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CdFastIoDispatch.MdlWriteComplete = FsRtlMdlWriteCompleteDev;
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#ifdef _MSC_VER
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#pragma prefast(pop)
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#endif
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//
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// Initialize the CdData structure.
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//
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RtlZeroMemory( &CdData, sizeof( CD_DATA ));
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CdData.NodeTypeCode = CDFS_NTC_DATA_HEADER;
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CdData.NodeByteSize = sizeof( CD_DATA );
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CdData.DriverObject = DriverObject;
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CdData.FileSystemDeviceObject = FileSystemDeviceObject;
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#ifdef __REACTOS__
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CdData.HddFileSystemDeviceObject = HddFileSystemDeviceObject;
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#endif
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InitializeListHead( &CdData.VcbQueue );
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ExInitializeResourceLite( &CdData.DataResource );
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//
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// Initialize the cache manager callback routines
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//
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CdData.CacheManagerCallbacks.AcquireForLazyWrite = (PVOID)&CdAcquireForCache;/* ReactOS Change: GCC "assignment from incompatible pointer type" */
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CdData.CacheManagerCallbacks.ReleaseFromLazyWrite = (PVOID)&CdReleaseFromCache;/* ReactOS Change: GCC "assignment from incompatible pointer type" */
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CdData.CacheManagerCallbacks.AcquireForReadAhead = (PVOID)&CdAcquireForCache;/* ReactOS Change: GCC "assignment from incompatible pointer type" */
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CdData.CacheManagerCallbacks.ReleaseFromReadAhead = (PVOID)&CdReleaseFromCache;/* ReactOS Change: GCC "assignment from incompatible pointer type" */
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CdData.CacheManagerVolumeCallbacks.AcquireForLazyWrite = &CdNoopAcquire;
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CdData.CacheManagerVolumeCallbacks.ReleaseFromLazyWrite = &CdNoopRelease;
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CdData.CacheManagerVolumeCallbacks.AcquireForReadAhead = &CdNoopAcquire;
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CdData.CacheManagerVolumeCallbacks.ReleaseFromReadAhead = &CdNoopRelease;
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//
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// Initialize the lock mutex and the async and delay close queues.
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//
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ExInitializeFastMutex( &CdData.CdDataMutex );
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InitializeListHead( &CdData.AsyncCloseQueue );
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InitializeListHead( &CdData.DelayedCloseQueue );
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CdData.CloseItem = IoAllocateWorkItem (FileSystemDeviceObject);
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if (CdData.CloseItem == NULL) {
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ExDeleteResourceLite( &CdData.DataResource );
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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//
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// Do the initialization based on the system size.
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//
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switch (MmQuerySystemSize()) {
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case MmSmallSystem:
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CdData.IrpContextMaxDepth = 4;
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CdData.MaxDelayedCloseCount = 8;
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CdData.MinDelayedCloseCount = 2;
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break;
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case MmMediumSystem:
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CdData.IrpContextMaxDepth = 8;
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CdData.MaxDelayedCloseCount = 24;
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CdData.MinDelayedCloseCount = 6;
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break;
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case MmLargeSystem:
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CdData.IrpContextMaxDepth = 32;
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CdData.MaxDelayedCloseCount = 72;
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CdData.MinDelayedCloseCount = 18;
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break;
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}
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return STATUS_SUCCESS;
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}
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