3 * Copyright (C) 2002 ReactOS Team
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.
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.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 * COPYRIGHT: See COPYING in the top level directory
22 * PROJECT: ReactOS kernel
23 * FILE: services/fs/template/template.c
24 * PURPOSE: Bare filesystem template
25 * PROGRAMMER: David Welch (welch@mcmail.com)
29 /* INCLUDES *****************************************************************/
38 PDEVICE_OBJECT StorageDevice
;
39 } DEVICE_EXTENSION
, *PDEVICE_EXTENSION
;
41 /* GLOBALS ******************************************************************/
43 static PDRIVER_OBJECT DriverObject
;
45 /* FUNCTIONS ****************************************************************/
48 FsdCloseFile(PDEVICE_EXTENSION DeviceExt
,
49 PFILE_OBJECT FileObject
)
51 * FUNCTION: Closes a file
54 return(STATUS_SUCCESS
);
59 FsdOpenFile(PDEVICE_EXTENSION DeviceExt
,
60 PFILE_OBJECT FileObject
,
63 * FUNCTION: Opens a file
66 return(STATUS_SUCCESS
);
71 FsdHasFileSystem(PDEVICE_OBJECT DeviceToMount
)
73 * FUNCTION: Tests if the device contains a filesystem that can be mounted
82 FsdMountDevice(PDEVICE_EXTENSION DeviceExt
,
83 PDEVICE_OBJECT DeviceToMount
)
85 * FUNCTION: Mounts the device
88 return(STATUS_SUCCESS
);
93 FsdReadFile(PDEVICE_EXTENSION DeviceExt
,
94 PFILE_OBJECT FileObject
,
99 * FUNCTION: Reads data from a file
102 return(STATUS_SUCCESS
);
107 FsdClose(PDEVICE_OBJECT DeviceObject
,
110 PIO_STACK_LOCATION Stack
= IoGetCurrentIrpStackLocation(Irp
);
111 PFILE_OBJECT FileObject
= Stack
->FileObject
;
112 PDEVICE_EXTENSION DeviceExtension
= DeviceObject
->DeviceExtension
;
115 Status
= FsdCloseFile(DeviceExtension
,FileObject
);
117 Irp
->IoStatus
.Status
= Status
;
118 Irp
->IoStatus
.Information
= 0;
120 IoCompleteRequest(Irp
, IO_NO_INCREMENT
);
126 FsdCreate(PDEVICE_OBJECT DeviceObject
,
129 PIO_STACK_LOCATION Stack
= IoGetCurrentIrpStackLocation(Irp
);
130 PFILE_OBJECT FileObject
= Stack
->FileObject
;
132 PDEVICE_EXTENSION DeviceExt
;
134 DeviceExt
= DeviceObject
->DeviceExtension
;
135 Status
= FsdOpenFile(DeviceExt
,FileObject
,FileObject
->FileName
.Buffer
);
137 Irp
->IoStatus
.Status
= Status
;
138 Irp
->IoStatus
.Information
= 0;
140 IoCompleteRequest(Irp
, IO_NO_INCREMENT
);
146 FsdWrite(PDEVICE_OBJECT DeviceObject
,
149 DPRINT("FsdWrite(DeviceObject %x Irp %x)\n",DeviceObject
,Irp
);
151 Irp
->IoStatus
.Status
= STATUS_UNSUCCESSFUL
;
152 Irp
->IoStatus
.Information
= 0;
153 return(STATUS_UNSUCCESSFUL
);
157 FsdRead(PDEVICE_OBJECT DeviceObject
,
163 PIO_STACK_LOCATION Stack
= IoGetCurrentIrpStackLocation(Irp
);
164 PFILE_OBJECT FileObject
= Stack
->FileObject
;
165 PDEVICE_EXTENSION DeviceExt
= DeviceObject
->DeviceExtension
;
168 DPRINT("FsdRead(DeviceObject %x, Irp %x)\n",DeviceObject
,Irp
);
170 Length
= Stack
->Parameters
.Read
.Length
;
171 Buffer
= MmGetSystemAddressForMdl(Irp
->MdlAddress
);
172 Offset
= Stack
->Parameters
.Read
.ByteOffset
.LowPart
;
174 Status
= FsdReadFile(DeviceExt
,FileObject
,Buffer
,Length
,Offset
);
176 Irp
->IoStatus
.Status
= Status
;
177 Irp
->IoStatus
.Information
= Length
;
178 IoCompleteRequest(Irp
,IO_NO_INCREMENT
);
184 FsdMount(PDEVICE_OBJECT DeviceToMount
)
186 PDEVICE_OBJECT DeviceObject
;
187 PDEVICE_EXTENSION DeviceExt
;
189 IoCreateDevice(DriverObject
,
190 sizeof(DEVICE_EXTENSION
),
192 FILE_DEVICE_FILE_SYSTEM
,
196 DeviceObject
->Flags
= DeviceObject
->Flags
| DO_DIRECT_IO
;
197 DeviceExt
= (PVOID
)DeviceObject
->DeviceExtension
;
199 FsdMountDevice(DeviceExt
,
202 DeviceExt
->StorageDevice
= DeviceToMount
;
203 DeviceExt
->StorageDevice
->Vpb
->DeviceObject
= DeviceObject
;
204 DeviceExt
->StorageDevice
->Vpb
->RealDevice
= DeviceExt
->StorageDevice
;
205 DeviceExt
->StorageDevice
->Vpb
->Flags
|= VPB_MOUNTED
;
206 DeviceObject
->StackSize
= DeviceExt
->StorageDevice
->StackSize
+ 1;
207 DeviceObject
->Flags
&= ~DO_DEVICE_INITIALIZING
;
209 return(STATUS_SUCCESS
);
214 FsdFileSystemControl(PDEVICE_OBJECT DeviceObject
,
217 PIO_STACK_LOCATION Stack
= IoGetCurrentIrpStackLocation(Irp
);
218 PVPB vpb
= Stack
->Parameters
.Mount
.Vpb
;
219 PDEVICE_OBJECT DeviceToMount
= Stack
->Parameters
.Mount
.DeviceObject
;
222 if (FsdHasFileSystem(DeviceToMount
))
224 Status
= FsdMount(DeviceToMount
);
228 Status
= STATUS_UNRECOGNIZED_VOLUME
;
231 Irp
->IoStatus
.Status
= Status
;
232 Irp
->IoStatus
.Information
= 0;
234 IoCompleteRequest(Irp
, IO_NO_INCREMENT
);
240 DriverEntry(PDRIVER_OBJECT _DriverObject
,
241 PUNICODE_STRING RegistryPath
)
243 * FUNCTION: Called by the system to initalize the driver
245 * DriverObject = object describing this driver
246 * RegistryPath = path to our configuration entries
247 * RETURNS: Success or failure
250 PDEVICE_OBJECT DeviceObject
;
252 UNICODE_STRING DeviceName
= RTL_CONSTANT_STRING(L
"\\Device\\BareFsd");
254 DbgPrint("Bare FSD Template 0.0.1\n");
256 DriverObject
= _DriverObject
;
258 Status
= IoCreateDevice(DriverObject
,
261 FILE_DEVICE_FILE_SYSTEM
,
265 if (!NT_SUCCESS(Status
))
270 DeviceObject
->Flags
=0;
271 DriverObject
->MajorFunction
[IRP_MJ_CLOSE
] = FsdClose
;
272 DriverObject
->MajorFunction
[IRP_MJ_CREATE
] = FsdCreate
;
273 DriverObject
->MajorFunction
[IRP_MJ_READ
] = FsdRead
;
274 DriverObject
->MajorFunction
[IRP_MJ_WRITE
] = FsdWrite
;
275 DriverObject
->MajorFunction
[IRP_MJ_FILE_SYSTEM_CONTROL
] =
276 FsdFileSystemControl
;
277 DriverObject
->DriverUnload
= NULL
;
279 IoRegisterFileSystem(DeviceObject
);
281 return(STATUS_SUCCESS
);