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.
19 /* $Id: cdfs.c,v 1.7 2002/09/08 10:22:09 chorns Exp $
21 * COPYRIGHT: See COPYING in the top level directory
22 * PROJECT: ReactOS kernel
23 * FILE: services/fs/fs_rec/cdfs.c
24 * PURPOSE: Filesystem recognizer driver
25 * PROGRAMMER: Eric Kohl
28 /* INCLUDES *****************************************************************/
30 #include <ddk/ntddk.h>
38 #define CDFS_PVD_SECTOR 16
40 /* FUNCTIONS ****************************************************************/
43 FsRecIsCdfsVolume(IN PDEVICE_OBJECT DeviceObject
)
45 DISK_GEOMETRY DiskGeometry
;
50 Size
= sizeof(DISK_GEOMETRY
);
51 Status
= FsRecDeviceIoControl(DeviceObject
,
52 IOCTL_CDROM_GET_DRIVE_GEOMETRY
,
57 if (!NT_SUCCESS(Status
))
59 DPRINT("FsRecDeviceIoControl() failed (Status %lx)\n", Status
);
63 DPRINT("BytesPerSector: %lu\n", DiskGeometry
.BytesPerSector
);
64 Buffer
= ExAllocatePool(NonPagedPool
,
65 DiskGeometry
.BytesPerSector
);
68 return(STATUS_INSUFFICIENT_RESOURCES
);
71 Status
= FsRecReadSectors(DeviceObject
,
74 DiskGeometry
.BytesPerSector
,
76 if (!NT_SUCCESS(Status
))
78 DPRINT("FsRecReadSectors() failed (Status %lx)\n", Status
);
83 DPRINT("CD-identifier: [%.5s]\n", Buffer
+ 1);
85 Status
= (Buffer
[0] == 1 &&
90 Buffer
[5] == '1') ? STATUS_SUCCESS
: STATUS_UNRECOGNIZED_VOLUME
;
99 FsRecCdfsFsControl(IN PDEVICE_OBJECT DeviceObject
,
102 PIO_STACK_LOCATION Stack
;
103 UNICODE_STRING RegistryPath
;
106 Stack
= IoGetCurrentIrpStackLocation(Irp
);
108 switch (Stack
->MinorFunction
)
110 case IRP_MN_MOUNT_VOLUME
:
111 DPRINT("Cdfs: IRP_MN_MOUNT_VOLUME\n");
112 Status
= FsRecIsCdfsVolume(Stack
->Parameters
.MountVolume
.DeviceObject
);
113 if (NT_SUCCESS(Status
))
115 DPRINT("Identified CDFS volume\n");
116 Status
= STATUS_FS_DRIVER_REQUIRED
;
120 case IRP_MN_LOAD_FILE_SYSTEM
:
121 DPRINT("Cdfs: IRP_MN_LOAD_FILE_SYSTEM\n");
122 RtlInitUnicodeStringFromLiteral(&RegistryPath
,
123 L
"\\Registry\\Machine\\System\\CurrentControlSet\\Services\\Cdfs");
124 Status
= ZwLoadDriver(&RegistryPath
);
125 if (!NT_SUCCESS(Status
))
127 DPRINT("ZwLoadDriver failed (Status %x)\n", Status
);
131 IoUnregisterFileSystem(DeviceObject
);
136 DPRINT("Cdfs: Unknown minor function %lx\n", Stack
->MinorFunction
);
137 Status
= STATUS_INVALID_DEVICE_REQUEST
;