drivers/filesystems/cdfs/cdfs.c

   1 /*
   2  *  ReactOS kernel
   3  *  Copyright (C) 2002, 2003 ReactOS Team
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License along
  16  *  with this program; if not, write to the Free Software Foundation, Inc.,
  17  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19 /*
  20  * COPYRIGHT:        See COPYING in the top level directory
  21  * PROJECT:          ReactOS kernel
  22  * FILE:             drivers/filesystems/cdfs/cdfs.c
  23  * PURPOSE:          CDROM (ISO 9660) filesystem driver
  24  * PROGRAMMER:       Art Yerkes
  25  *                   Eric Kohl
  26  */
  27
  28 /* INCLUDES *****************************************************************/
  29
  30 #include "cdfs.h"
  31
  32 #define NDEBUG
  33 #include <debug.h>
  34
  35 #if defined(ALLOC_PRAGMA)
  36 #pragma alloc_text(INIT, DriverEntry)
  37 #endif
  38
  39 /* GLOBALS ******************************************************************/
  40
  41 PCDFS_GLOBAL_DATA CdfsGlobalData;
  42
  43
  44 /* FUNCTIONS ****************************************************************/
  45
  46 INIT_SECTION
  47 NTSTATUS NTAPI
  48 DriverEntry(PDRIVER_OBJECT DriverObject,
  49             PUNICODE_STRING RegistryPath)
  50             /*
  51             * FUNCTION: Called by the system to initialize the driver
  52             * ARGUMENTS:
  53             *           DriverObject = object describing this driver
  54             *           RegistryPath = path to our configuration entries
  55             * RETURNS: Success or failure
  56             */
  57 {
  58     NTSTATUS Status;
  59     PDEVICE_OBJECT CdFsDeviceObject;
  60     PDEVICE_OBJECT HddFsDeviceObject;
  61     UNICODE_STRING CdFsDeviceName = RTL_CONSTANT_STRING(L"\\Cdfs");
  62     UNICODE_STRING HddFsDeviceName = RTL_CONSTANT_STRING(L"\\CdfsHdd");
  63
  64     UNREFERENCED_PARAMETER(RegistryPath);
  65
  66     DPRINT("CDFS 0.0.3\n");
  67
  68     Status = IoCreateDevice(DriverObject,
  69         sizeof(CDFS_GLOBAL_DATA),
  70         &CdFsDeviceName,
  71         FILE_DEVICE_CD_ROM_FILE_SYSTEM,
  72         0,
  73         FALSE,
  74         &CdFsDeviceObject);
  75     if (!NT_SUCCESS(Status))
  76     {
  77         return(Status);
  78     }
  79
  80     Status = IoCreateDevice(DriverObject,
  81         0,
  82         &HddFsDeviceName,
  83         FILE_DEVICE_DISK_FILE_SYSTEM,
  84         0,
  85         FALSE,
  86         &HddFsDeviceObject);
  87     if (!NT_SUCCESS(Status))
  88     {
  89         return(Status);
  90     }
  91
  92     /* Initialize global data */
  93     CdfsGlobalData = CdFsDeviceObject->DeviceExtension;
  94     RtlZeroMemory(CdfsGlobalData,
  95         sizeof(CDFS_GLOBAL_DATA));
  96     CdfsGlobalData->DriverObject = DriverObject;
  97     CdfsGlobalData->CdFsDeviceObject = CdFsDeviceObject;
  98     CdfsGlobalData->HddFsDeviceObject = HddFsDeviceObject;
  99     HddFsDeviceObject->DeviceExtension = CdfsGlobalData;
 100
 101     /* Initialize driver data */
 102     DriverObject->MajorFunction[IRP_MJ_CLOSE] = CdfsFsdDispatch;
 103     DriverObject->MajorFunction[IRP_MJ_CLEANUP] = CdfsFsdDispatch;
 104     DriverObject->MajorFunction[IRP_MJ_CREATE] = CdfsFsdDispatch;
 105     DriverObject->MajorFunction[IRP_MJ_READ] = CdfsFsdDispatch;
 106     DriverObject->MajorFunction[IRP_MJ_WRITE] = CdfsFsdDispatch;
 107     DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] = CdfsFsdDispatch;
 108     DriverObject->MajorFunction[IRP_MJ_DIRECTORY_CONTROL] = CdfsFsdDispatch;
 109     DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] = CdfsFsdDispatch;
 110     DriverObject->MajorFunction[IRP_MJ_SET_INFORMATION] = CdfsFsdDispatch;
 111     DriverObject->MajorFunction[IRP_MJ_QUERY_VOLUME_INFORMATION] = CdfsFsdDispatch;
 112     DriverObject->MajorFunction[IRP_MJ_SET_VOLUME_INFORMATION] = CdfsFsdDispatch;
 113     DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = CdfsFsdDispatch;
 114     DriverObject->MajorFunction[IRP_MJ_LOCK_CONTROL] = CdfsFsdDispatch;
 115
 116     CdfsGlobalData->FastIoDispatch.SizeOfFastIoDispatch = sizeof(FAST_IO_DISPATCH);
 117     CdfsGlobalData->FastIoDispatch.FastIoCheckIfPossible = CdfsFastIoCheckIfPossible;
 118     CdfsGlobalData->FastIoDispatch.FastIoRead = CdfsFastIoRead;
 119     CdfsGlobalData->FastIoDispatch.FastIoWrite = CdfsFastIoWrite;
 120     DriverObject->FastIoDispatch = &CdfsGlobalData->FastIoDispatch;
 121
 122     /* Initialize lookaside list for IRP contexts */
 123     ExInitializeNPagedLookasideList(&CdfsGlobalData->IrpContextLookasideList,
 124                                     NULL, NULL, 0, sizeof(CDFS_IRP_CONTEXT), 'PRIC', 0);
 125
 126     DriverObject->DriverUnload = NULL;
 127
 128     /* Cache manager */
 129     CdfsGlobalData->CacheMgrCallbacks.AcquireForLazyWrite = CdfsAcquireForLazyWrite;
 130     CdfsGlobalData->CacheMgrCallbacks.ReleaseFromLazyWrite = CdfsReleaseFromLazyWrite;
 131     CdfsGlobalData->CacheMgrCallbacks.AcquireForReadAhead = CdfsAcquireForLazyWrite;
 132     CdfsGlobalData->CacheMgrCallbacks.ReleaseFromReadAhead = CdfsReleaseFromLazyWrite;
 133
 134     CdFsDeviceObject->Flags |= DO_DIRECT_IO | DO_LOW_PRIORITY_FILESYSTEM;
 135     HddFsDeviceObject->Flags |= DO_DIRECT_IO | DO_LOW_PRIORITY_FILESYSTEM;
 136
 137     IoRegisterFileSystem(CdFsDeviceObject);
 138     IoRegisterFileSystem(HddFsDeviceObject);
 139
 140     return(STATUS_SUCCESS);
 141 }