119 lines
2.2 KiB
C
119 lines
2.2 KiB
C
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/*++
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Copyright (c) 1989 Microsoft Corporation
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Module Name:
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RawStruc.h
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Abstract:
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This module defines the data structures that make up the major internal
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part of the Raw file system.
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Author:
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David Goebel [DavidGoe] 18-Mar-91
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Revision History:
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--*/
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#ifndef _RAWSTRUC_
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#define _RAWSTRUC_
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//
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// The Vcb (Volume control Block) record corresponds to every volume mounted
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// by the file system. This structure must be allocated from non-paged pool.
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//
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typedef struct _VCB {
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//
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// The type and size of this record (must be RAW_NTC_VCB)
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//
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NODE_TYPE_CODE NodeTypeCode;
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NODE_BYTE_SIZE NodeByteSize;
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//
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// A pointer the device object passed in by the I/O system on a mount
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// This is the target device object that the file system talks to when it
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// needs to do any I/O (e.g., the disk stripper device object).
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//
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//
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PDEVICE_OBJECT TargetDeviceObject;
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//
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// A pointer to the VPB for the volume passed in by the I/O system on
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// a mount.
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//
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PVPB Vpb;
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//
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// A pointer to a spare Vpb used for explicit dismount
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//
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PVPB SpareVpb;
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//
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// The internal state of the device.
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//
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USHORT VcbState;
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//
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// A mutex to control access to VcbState, OpenCount and ShareAccess
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//
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KMUTEX Mutex;
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//
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// A count of the number of file objects that have opened the volume
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// and their share access state.
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//
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CLONG OpenCount;
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SHARE_ACCESS ShareAccess;
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//
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// Information about the disk geometry
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//
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ULONG BytesPerSector;
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LARGE_INTEGER SectorsOnDisk;
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} VCB;
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typedef VCB *PVCB;
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#define VCB_STATE_FLAG_LOCKED (0x0001)
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#define VCB_STATE_FLAG_DISMOUNTED (0x0002)
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//
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// The Volume Device Object is an I/O system device object with a
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// VCB record appended to the end. There are multiple of these
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// records, one for every mounted volume, and are created during
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// a volume mount operation.
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//
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typedef struct _VOLUME_DEVICE_OBJECT {
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DEVICE_OBJECT DeviceObject;
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//
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// This is the file system specific volume control block.
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//
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VCB Vcb;
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} VOLUME_DEVICE_OBJECT;
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typedef VOLUME_DEVICE_OBJECT *PVOLUME_DEVICE_OBJECT;
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#endif // _RAWSTRUC_
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