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b7ad4a2298
- Make the Create*Partition helpers take a size in bytes, not in sectors. This allows them to be easier to use by the caller, alleviating the need for making the size conversion into sectors. Instead it is done internally by the helpers. - Introduce helper macros to easily retrieve the size of a partition entry or a disk in bytes, from their internal representation in number of sectors. - The 'AutoCreate' variable being USETUP-specific, remove it from the PARTENTRY structure and use instead a flag set into the 'New' member. - Rename IsDiskSizeValid to IsPartitionLargeEnough, to better describe what the function is for.
382 lines
10 KiB
C
382 lines
10 KiB
C
/*
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* PROJECT: ReactOS Setup Library
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* LICENSE: GPL-2.0+ (https://spdx.org/licenses/GPL-2.0+)
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* PURPOSE: Partition list functions
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* COPYRIGHT: Copyright 2003-2019 Casper S. Hornstrup (chorns@users.sourceforge.net)
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* Copyright 2018-2019 Hermes Belusca-Maito
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*/
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#pragma once
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/* EXTRA HANDFUL MACROS *****************************************************/
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// NOTE: They should be moved into some global header.
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/* OEM MBR partition types recognized by NT (see [MS-DMRP] Appendix B) */
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#define PARTITION_EISA 0x12 // EISA partition
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#define PARTITION_HIBERNATION 0x84 // Hibernation partition for laptops
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#define PARTITION_DIAGNOSTIC 0xA0 // Diagnostic partition on some Hewlett-Packard (HP) notebooks
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#define PARTITION_DELL 0xDE // Dell partition
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#define PARTITION_IBM 0xFE // IBM Initial Microprogram Load (IML) partition
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#define IsOEMPartition(PartitionType) \
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( ((PartitionType) == PARTITION_EISA) || \
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((PartitionType) == PARTITION_HIBERNATION) || \
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((PartitionType) == PARTITION_DIAGNOSTIC) || \
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((PartitionType) == PARTITION_DELL) || \
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((PartitionType) == PARTITION_IBM) )
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/* PARTITION UTILITY FUNCTIONS **********************************************/
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typedef enum _FORMATSTATE
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{
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Unformatted,
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UnformattedOrDamaged,
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UnknownFormat,
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Preformatted,
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Formatted
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} FORMATSTATE, *PFORMATSTATE;
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typedef struct _PARTENTRY
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{
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LIST_ENTRY ListEntry;
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/* The disk this partition belongs to */
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struct _DISKENTRY *DiskEntry;
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/* Partition geometry */
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ULARGE_INTEGER StartSector;
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ULARGE_INTEGER SectorCount;
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BOOLEAN BootIndicator; // NOTE: See comment for the PARTLIST::SystemPartition member.
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UCHAR PartitionType;
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ULONG OnDiskPartitionNumber; /* Enumerated partition number (primary partitions first, excluding the extended partition container, then the logical partitions) */
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ULONG PartitionNumber; /* Current partition number, only valid for the currently running NTOS instance */
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ULONG PartitionIndex; /* Index in the LayoutBuffer->PartitionEntry[] cached array of the corresponding DiskEntry */
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WCHAR DriveLetter;
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WCHAR VolumeLabel[20];
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WCHAR FileSystem[MAX_PATH+1];
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FORMATSTATE FormatState;
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BOOLEAN LogicalPartition;
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/* Partition is partitioned disk space */
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BOOLEAN IsPartitioned;
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/** The following three properties may be replaced by flags **/
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/* Partition is new, table does not exist on disk yet */
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BOOLEAN New;
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/* Partition must be checked */
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BOOLEAN NeedsCheck;
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} PARTENTRY, *PPARTENTRY;
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typedef struct _DISKENTRY
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{
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LIST_ENTRY ListEntry;
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/* The list of disks/partitions this disk belongs to */
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struct _PARTLIST *PartList;
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MEDIA_TYPE MediaType; /* FixedMedia or RemovableMedia */
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/* Disk geometry */
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ULONGLONG Cylinders;
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ULONG TracksPerCylinder;
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ULONG SectorsPerTrack;
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ULONG BytesPerSector;
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ULARGE_INTEGER SectorCount;
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ULONG SectorAlignment;
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ULONG CylinderAlignment;
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/* BIOS Firmware parameters */
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BOOLEAN BiosFound;
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ULONG HwAdapterNumber;
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ULONG HwControllerNumber;
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ULONG HwDiskNumber; /* Disk number currently assigned on the system */
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ULONG HwFixedDiskNumber; /* Disk number on the system when *ALL* removable disks are not connected */
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// ULONG Signature; // Obtained from LayoutBuffer->Signature
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// ULONG Checksum;
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/* SCSI parameters */
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ULONG DiskNumber;
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// SCSI_ADDRESS;
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USHORT Port;
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USHORT Bus;
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USHORT Id;
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/* Has the partition list been modified? */
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BOOLEAN Dirty;
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BOOLEAN NewDisk; /* If TRUE, the disk is uninitialized */
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PARTITION_STYLE DiskStyle; /* MBR/GPT-partitioned disk, or uninitialized disk (RAW) */
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UNICODE_STRING DriverName;
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PDRIVE_LAYOUT_INFORMATION LayoutBuffer;
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// TODO: When adding support for GPT disks:
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// Use PDRIVE_LAYOUT_INFORMATION_EX which indicates whether
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// the disk is MBR, GPT, or unknown (uninitialized).
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// Depending on the style, either use the MBR or GPT partition info.
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LIST_ENTRY PrimaryPartListHead; /* List of primary partitions */
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LIST_ENTRY LogicalPartListHead; /* List of logical partitions (Valid only for MBR-partitioned disks) */
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/* Pointer to the unique extended partition on this disk (Valid only for MBR-partitioned disks) */
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PPARTENTRY ExtendedPartition;
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} DISKENTRY, *PDISKENTRY;
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typedef struct _BIOSDISKENTRY
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{
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LIST_ENTRY ListEntry;
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ULONG AdapterNumber;
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ULONG ControllerNumber;
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ULONG DiskNumber;
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ULONG Signature;
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ULONG Checksum;
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PDISKENTRY DiskEntry; /* Corresponding recognized disk; is NULL if the disk is not recognized */ // RecognizedDiskEntry;
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CM_DISK_GEOMETRY_DEVICE_DATA DiskGeometry;
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CM_INT13_DRIVE_PARAMETER Int13DiskData;
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} BIOSDISKENTRY, *PBIOSDISKENTRY;
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typedef struct _PARTLIST
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{
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/*
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* The system partition where the boot manager resides.
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* The corresponding system disk is obtained via:
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* SystemPartition->DiskEntry.
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*/
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// NOTE: It seems to appear that the specifications of ARC and (u)EFI
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// actually allow for multiple system partitions to exist on the system.
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// If so we should instead rely on the BootIndicator bit of the PARTENTRY
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// structure in order to find these.
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PPARTENTRY SystemPartition;
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LIST_ENTRY DiskListHead;
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LIST_ENTRY BiosDiskListHead;
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} PARTLIST, *PPARTLIST;
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#define PARTITION_TBL_SIZE 4
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#define PARTITION_MAGIC 0xAA55
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/* Defines system type for MBR showing that a GPT is following */
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#define EFI_PMBR_OSTYPE_EFI 0xEE
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#include <pshpack1.h>
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typedef struct _PARTITION
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{
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unsigned char BootFlags; /* bootable? 0=no, 128=yes */
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unsigned char StartingHead; /* beginning head number */
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unsigned char StartingSector; /* beginning sector number */
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unsigned char StartingCylinder; /* 10 bit nmbr, with high 2 bits put in begsect */
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unsigned char PartitionType; /* Operating System type indicator code */
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unsigned char EndingHead; /* ending head number */
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unsigned char EndingSector; /* ending sector number */
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unsigned char EndingCylinder; /* also a 10 bit nmbr, with same high 2 bit trick */
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unsigned int StartingBlock; /* first sector relative to start of disk */
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unsigned int SectorCount; /* number of sectors in partition */
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} PARTITION, *PPARTITION;
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typedef struct _PARTITION_SECTOR
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{
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UCHAR BootCode[440]; /* 0x000 */
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ULONG Signature; /* 0x1B8 */
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UCHAR Reserved[2]; /* 0x1BC */
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PARTITION Partition[PARTITION_TBL_SIZE]; /* 0x1BE */
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USHORT Magic; /* 0x1FE */
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} PARTITION_SECTOR, *PPARTITION_SECTOR;
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#include <poppack.h>
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typedef struct
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{
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LIST_ENTRY ListEntry;
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ULONG DiskNumber;
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ULONG Identifier;
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ULONG Signature;
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} BIOS_DISK, *PBIOS_DISK;
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ULONGLONG
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AlignDown(
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IN ULONGLONG Value,
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IN ULONG Alignment);
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ULONGLONG
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AlignUp(
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IN ULONGLONG Value,
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IN ULONG Alignment);
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ULONGLONG
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RoundingDivide(
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IN ULONGLONG Dividend,
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IN ULONGLONG Divisor);
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#define GetPartEntryOffsetInBytes(PartEntry) \
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((PartEntry)->StartSector.QuadPart * (PartEntry)->DiskEntry->BytesPerSector)
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#define GetPartEntrySizeInBytes(PartEntry) \
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((PartEntry)->SectorCount.QuadPart * (PartEntry)->DiskEntry->BytesPerSector)
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#define GetDiskSizeInBytes(DiskEntry) \
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((DiskEntry)->SectorCount.QuadPart * (DiskEntry)->BytesPerSector)
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BOOLEAN
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IsSuperFloppy(
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IN PDISKENTRY DiskEntry);
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BOOLEAN
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IsPartitionActive(
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IN PPARTENTRY PartEntry);
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PPARTLIST
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CreatePartitionList(VOID);
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VOID
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DestroyPartitionList(
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IN PPARTLIST List);
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PDISKENTRY
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GetDiskByBiosNumber(
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IN PPARTLIST List,
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IN ULONG HwDiskNumber);
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PDISKENTRY
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GetDiskByNumber(
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IN PPARTLIST List,
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IN ULONG DiskNumber);
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PDISKENTRY
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GetDiskBySCSI(
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IN PPARTLIST List,
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IN USHORT Port,
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IN USHORT Bus,
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IN USHORT Id);
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PDISKENTRY
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GetDiskBySignature(
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IN PPARTLIST List,
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IN ULONG Signature);
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PPARTENTRY
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GetPartition(
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// IN PPARTLIST List,
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IN PDISKENTRY DiskEntry,
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IN ULONG PartitionNumber);
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BOOLEAN
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GetDiskOrPartition(
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IN PPARTLIST List,
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IN ULONG DiskNumber,
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IN ULONG PartitionNumber OPTIONAL,
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OUT PDISKENTRY* pDiskEntry,
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OUT PPARTENTRY* pPartEntry OPTIONAL);
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PPARTENTRY
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SelectPartition(
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IN PPARTLIST List,
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IN ULONG DiskNumber,
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IN ULONG PartitionNumber);
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PPARTENTRY
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GetNextPartition(
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IN PPARTLIST List,
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IN PPARTENTRY CurrentPart OPTIONAL);
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PPARTENTRY
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GetPrevPartition(
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IN PPARTLIST List,
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IN PPARTENTRY CurrentPart OPTIONAL);
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ERROR_NUMBER
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PartitionCreationChecks(
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_In_ PPARTENTRY PartEntry);
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ERROR_NUMBER
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ExtendedPartitionCreationChecks(
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_In_ PPARTENTRY PartEntry);
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BOOLEAN
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CreatePartition(
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_In_ PPARTLIST List,
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_Inout_ PPARTENTRY PartEntry,
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_In_opt_ ULONGLONG SizeBytes);
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BOOLEAN
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CreateExtendedPartition(
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_In_ PPARTLIST List,
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_Inout_ PPARTENTRY PartEntry,
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_In_opt_ ULONGLONG SizeBytes);
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NTSTATUS
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DismountVolume(
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IN PPARTENTRY PartEntry);
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BOOLEAN
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DeletePartition(
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IN PPARTLIST List,
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IN PPARTENTRY PartEntry,
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OUT PPARTENTRY* FreeRegion OPTIONAL);
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PPARTENTRY
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FindSupportedSystemPartition(
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IN PPARTLIST List,
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IN BOOLEAN ForceSelect,
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IN PDISKENTRY AlternativeDisk OPTIONAL,
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IN PPARTENTRY AlternativePart OPTIONAL);
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BOOLEAN
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SetActivePartition(
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IN PPARTLIST List,
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IN PPARTENTRY PartEntry,
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IN PPARTENTRY OldActivePart OPTIONAL);
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NTSTATUS
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WritePartitions(
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IN PDISKENTRY DiskEntry);
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BOOLEAN
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WritePartitionsToDisk(
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IN PPARTLIST List);
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BOOLEAN
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SetMountedDeviceValue(
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IN WCHAR Letter,
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IN ULONG Signature,
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IN LARGE_INTEGER StartingOffset);
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BOOLEAN
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SetMountedDeviceValues(
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IN PPARTLIST List);
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VOID
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SetMBRPartitionType(
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IN PPARTENTRY PartEntry,
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IN UCHAR PartitionType);
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BOOLEAN
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GetNextUnformattedPartition(
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IN PPARTLIST List,
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OUT PDISKENTRY *pDiskEntry OPTIONAL,
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OUT PPARTENTRY *pPartEntry);
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BOOLEAN
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GetNextUncheckedPartition(
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IN PPARTLIST List,
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OUT PDISKENTRY *pDiskEntry OPTIONAL,
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OUT PPARTENTRY *pPartEntry);
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/* EOF */
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