8ae777800afdee428533849b8f11e6a4d6490ab5
[reactos.git] / reactos / 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 /* GLOBALS ******************************************************************/
36
37 PCDFS_GLOBAL_DATA CdfsGlobalData;
38
39
40 /* FUNCTIONS ****************************************************************/
41
42 INIT_FUNCTION
43 NTSTATUS NTAPI
44 DriverEntry(PDRIVER_OBJECT DriverObject,
45 PUNICODE_STRING RegistryPath)
46 /*
47 * FUNCTION: Called by the system to initialize the driver
48 * ARGUMENTS:
49 * DriverObject = object describing this driver
50 * RegistryPath = path to our configuration entries
51 * RETURNS: Success or failure
52 */
53 {
54 PDEVICE_OBJECT DeviceObject;
55 NTSTATUS Status;
56 UNICODE_STRING DeviceName = RTL_CONSTANT_STRING(L"\\Cdfs");
57
58 UNREFERENCED_PARAMETER(RegistryPath);
59
60 DPRINT("CDFS 0.0.3\n");
61
62 Status = IoCreateDevice(DriverObject,
63 sizeof(CDFS_GLOBAL_DATA),
64 &DeviceName,
65 FILE_DEVICE_CD_ROM_FILE_SYSTEM,
66 0,
67 FALSE,
68 &DeviceObject);
69 if (!NT_SUCCESS(Status))
70 {
71 return(Status);
72 }
73
74 /* Initialize global data */
75 CdfsGlobalData = DeviceObject->DeviceExtension;
76 RtlZeroMemory(CdfsGlobalData,
77 sizeof(CDFS_GLOBAL_DATA));
78 CdfsGlobalData->DriverObject = DriverObject;
79 CdfsGlobalData->DeviceObject = DeviceObject;
80
81 /* Initialize driver data */
82 DeviceObject->Flags = DO_DIRECT_IO;
83 DriverObject->MajorFunction[IRP_MJ_CLOSE] = CdfsFsdDispatch;
84 DriverObject->MajorFunction[IRP_MJ_CLEANUP] = CdfsFsdDispatch;
85 DriverObject->MajorFunction[IRP_MJ_CREATE] = CdfsFsdDispatch;
86 DriverObject->MajorFunction[IRP_MJ_READ] = CdfsFsdDispatch;
87 DriverObject->MajorFunction[IRP_MJ_WRITE] = CdfsFsdDispatch;
88 DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] = CdfsFsdDispatch;
89 DriverObject->MajorFunction[IRP_MJ_DIRECTORY_CONTROL] = CdfsFsdDispatch;
90 DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] = CdfsFsdDispatch;
91 DriverObject->MajorFunction[IRP_MJ_SET_INFORMATION] = CdfsFsdDispatch;
92 DriverObject->MajorFunction[IRP_MJ_QUERY_VOLUME_INFORMATION] = CdfsFsdDispatch;
93 DriverObject->MajorFunction[IRP_MJ_SET_VOLUME_INFORMATION] = CdfsFsdDispatch;
94 DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = CdfsFsdDispatch;
95
96 CdfsGlobalData->FastIoDispatch.SizeOfFastIoDispatch = sizeof(FAST_IO_DISPATCH);
97 CdfsGlobalData->FastIoDispatch.FastIoCheckIfPossible = CdfsFastIoCheckIfPossible;
98 CdfsGlobalData->FastIoDispatch.FastIoRead = CdfsFastIoRead;
99 CdfsGlobalData->FastIoDispatch.FastIoWrite = CdfsFastIoWrite;
100 DriverObject->FastIoDispatch = &CdfsGlobalData->FastIoDispatch;
101
102 /* Initialize lookaside list for IRP contexts */
103 ExInitializeNPagedLookasideList(&CdfsGlobalData->IrpContextLookasideList,
104 NULL, NULL, 0, sizeof(CDFS_IRP_CONTEXT), 'PRIC', 0);
105
106 DriverObject->DriverUnload = NULL;
107
108 /* Cache manager */
109 CdfsGlobalData->CacheMgrCallbacks.AcquireForLazyWrite = CdfsAcquireForLazyWrite;
110 CdfsGlobalData->CacheMgrCallbacks.ReleaseFromLazyWrite = CdfsReleaseFromLazyWrite;
111 CdfsGlobalData->CacheMgrCallbacks.AcquireForReadAhead = CdfsAcquireForLazyWrite;
112 CdfsGlobalData->CacheMgrCallbacks.ReleaseFromReadAhead = CdfsReleaseFromLazyWrite;
113
114 DeviceObject->Flags |= DO_LOW_PRIORITY_FILESYSTEM;
115
116 IoRegisterFileSystem(DeviceObject);
117 DeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
118
119 return(STATUS_SUCCESS);
120 }
121
122