258 lines
4.3 KiB
C
258 lines
4.3 KiB
C
/*++
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Copyright (c) 1991-1993 Microsoft Corporation
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Module Name:
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ntdskreg.h
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Abstract:
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This file contains disk registry data structures.
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Authors:
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mglass
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bobri
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Notes:
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Revision History:
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--*/
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#ifndef _NTDSKREG_
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#define _NTDSKREG_
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//
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// Component types for FT members. If a disk partition
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// is not a part of an FT component then it is stamped
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// as "NotAnFtMember".
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//
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typedef enum {
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Mirror,
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Stripe,
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StripeWithParity,
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VolumeSet,
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NotAnFtMember,
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WholeDisk
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} FT_TYPE;
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//
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// FT_PARTITION_STATE is an enumerated type that describes the state of an
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// NTFT member.
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// Up to one member can be 'orphaned', that is missing or out of sync with
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// the other members. The orphaned member will remain orphaned until recovery
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// action is commenced in DISKMAN.EXE.
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// When READs are directed at an orphaned member, the data is returned from
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// the redundant copy. WRITEs go to the secondary members only.
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//
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typedef enum _FT_PARTITION_STATE {
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Healthy,
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Orphaned,
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Regenerating,
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Initializing
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} FT_PARTITION_STATE, *PFT_PARTITION_STATE;
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//
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// The description of a partition on a disk.
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//
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#include "pshpack4.h"
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typedef struct _DISK_PARTITION {
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FT_TYPE FtType;
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FT_PARTITION_STATE FtState;
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LARGE_INTEGER StartingOffset;
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LARGE_INTEGER Length;
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LARGE_INTEGER FtLength;
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ULONG ReservedTwoLongs[2];
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UCHAR DriveLetter;
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BOOLEAN AssignDriveLetter;
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USHORT LogicalNumber;
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USHORT FtGroup;
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USHORT FtMember;
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BOOLEAN Modified;
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UCHAR ReservedChars[3];
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} DISK_PARTITION, *PDISK_PARTITION;
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//
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// The description of a disk.
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//
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typedef struct _DISK_DESCRIPTION {
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USHORT NumberOfPartitions;
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USHORT ReservedShort;
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ULONG Signature;
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//
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// An array for NumberOfPartitions
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//
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DISK_PARTITION Partitions[1];
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} DISK_DESCRIPTION, *PDISK_DESCRIPTION;
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//
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// Header for all disk descriptions.
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//
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typedef struct _DISK_REGISTRY {
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USHORT NumberOfDisks;
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USHORT ReservedShort;
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//
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// An array for NumberOfDisks.
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//
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DISK_DESCRIPTION Disks[1];
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} DISK_REGISTRY, *PDISK_REGISTRY;
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#include "poppack.h"
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//
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// Function prototypes.
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//
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//
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// Set the current registry information.
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//
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NTSTATUS
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DiskRegistrySet(
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IN PDISK_REGISTRY Buffer
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);
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//
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// Add a single disk to the registry. This disk is not a part of
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// a Fault Tolerance volume.
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//
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NTSTATUS
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DiskRegistryAddNewDisk(
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IN PDISK_DESCRIPTION Buffer
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);
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//
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// Get the current registry information.
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// A Buffer address == NULL indicates that the caller only wants.
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// to know the size of the registry information.
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//
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NTSTATUS
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DiskRegistryGet(
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OUT PDISK_REGISTRY Buffer,
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OUT PULONG LengthReturned
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);
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//
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// Determine if FT is installed and currently active in the system.
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//
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BOOLEAN
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FtInstalled(
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);
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//
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// Cause an FT set to be initialized at the earliest possible moment.
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//
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VOID
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DiskRegistryInitializeSet(
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IN USHORT FtType,
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IN USHORT FtGroup
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);
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//
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// Cause an FT set member to be regenerated at the earliest possible moment.
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//
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VOID
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DiskRegistryRegenerateSet(
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IN USHORT FtType,
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IN USHORT FtGroup,
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IN USHORT FtMember
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);
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//
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// Enable the FT driver.
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//
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BOOLEAN
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DiskRegistryEnableFt();
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//
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// Disable the FT driver.
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//
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VOID
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DiskRegistryDisableFt();
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//
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// Determine if the existing FT registry information requires the FT driver.
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//
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BOOLEAN
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DiskRegistryRequiresFt();
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//
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// Update drive letter assignment.
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//
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BOOLEAN
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DiskRegistryAssignDriveLetter(
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ULONG Signature,
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LARGE_INTEGER StartingOffset,
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LARGE_INTEGER Length,
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UCHAR DriveLetter
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);
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//
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// Determine if DoubleSpace support is set to automount double space
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// volumes on removable media.
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//
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BOOLEAN
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DiskRegistryAutomountCurrentState(
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);
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//
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// Set the automount state for double space volumes on removable media.
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//
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NTSTATUS
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DiskRegistryDblSpaceRemovable(
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IN BOOLEAN Automount
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);
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//
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// Set the drive letter for space mount information in the registry.
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//
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NTSTATUS
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DiskRegistryAssignDblSpaceLetter(
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IN PWSTR CvfName,
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IN WCHAR DriveLetter
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);
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//
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// Set up the registry information for CdRom drive letters.
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//
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NTSTATUS
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DiskRegistryAssignCdRomLetter(
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IN PWSTR CdromName,
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IN WCHAR DriveLetter
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);
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#endif // _NTDSKREG_
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