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[FREELDR] partition.c: Split the MBR and Xbox (BRFR) code into separate files (#8843)

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No actual code changes.
Based upon suggestions by Daniel Victor (@iLauncherDev).
This commit is contained in:
Hermès Bélusca-Maïto
2026-04-08 20:42:15 +02:00
parent 655d3ee756
commit 1490f34da2
5 changed files with 358 additions and 307 deletions
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boot/freeldr/freeldr/disk/part_brfr.c
+63
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@@ -0,0 +1,63 @@
/*
* PROJECT: FreeLoader
* LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
* PURPOSE: Xbox (BRFR) partitioning scheme support
* COPYRIGHT: Copyright 2004 Gé van Geldorp <[email protected]>
* Copyright 2019 Stanislav Motylkov <[email protected]>
*/
#ifndef _M_ARM
// #include <freeldr.h>
/* BRFR signature at disk offset 0x600 (== 3 * 0x200) */
#define XBOX_SIGNATURE_SECTOR 3
#define XBOX_SIGNATURE ('B' | ('R' << 8) | ('F' << 16) | ('R' << 24))
/* Default hardcoded partition number to boot from Xbox disk */
#define FATX_DATA_PARTITION 1
static struct
{
ULONG SectorCountBeforePartition;
ULONG PartitionSectorCount;
UCHAR SystemIndicator;
} XboxPartitions[] =
{
/* This is in the \Device\Harddisk0\Partition.. order used by the Xbox kernel */
{ 0x0055F400, 0x0098F800, PARTITION_FAT32 }, /* Store , E: */
{ 0x00465400, 0x000FA000, PARTITION_FAT_16 }, /* System, C: */
{ 0x00000400, 0x00177000, PARTITION_FAT_16 }, /* Cache1, X: */
{ 0x00177400, 0x00177000, PARTITION_FAT_16 }, /* Cache2, Y: */
{ 0x002EE400, 0x00177000, PARTITION_FAT_16 } /* Cache3, Z: */
};
BOOLEAN
DiskGetBrfrPartitionEntry(
IN UCHAR DriveNumber,
IN ULONG PartitionNumber,
OUT PPARTITION_TABLE_ENTRY PartitionTableEntry)
{
/*
* Get partition entry of an Xbox-standard BRFR partitioned disk.
*/
if (PartitionNumber >= 1 && PartitionNumber <= RTL_NUMBER_OF(XboxPartitions) &&
MachDiskReadLogicalSectors(DriveNumber, XBOX_SIGNATURE_SECTOR, 1, DiskReadBuffer))
{
if (*((PULONG)DiskReadBuffer) != XBOX_SIGNATURE)
{
/* No magic Xbox partitions */
return FALSE;
}
RtlZeroMemory(PartitionTableEntry, sizeof(PARTITION_TABLE_ENTRY));
PartitionTableEntry->SystemIndicator = XboxPartitions[PartitionNumber - 1].SystemIndicator;
PartitionTableEntry->SectorCountBeforePartition = XboxPartitions[PartitionNumber - 1].SectorCountBeforePartition;
PartitionTableEntry->PartitionSectorCount = XboxPartitions[PartitionNumber - 1].PartitionSectorCount;
return TRUE;
}
/* Partition does not exist */
return FALSE;
}
#endif
boot/freeldr/freeldr/disk/part_mbr.c
+210
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@@ -0,0 +1,210 @@
/*
* PROJECT: FreeLoader
* LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
* PURPOSE: MBR partitioning scheme support
* COPYRIGHT: Copyright 2002-2003 Brian Palmer <[email protected]>
* Copyright 2016 Wim Hueskes
*/
#ifndef _M_ARM
// #include <freeldr.h>
#include "part_mbr.h"
// #include <debug.h>
// DBG_DEFAULT_CHANNEL(DISK);
static BOOLEAN
DiskGetFirstPartitionEntry(
IN PMASTER_BOOT_RECORD MasterBootRecord,
OUT PPARTITION_TABLE_ENTRY PartitionTableEntry)
{
ULONG Index;
for (Index = 0; Index < 4; Index++)
{
/* Check the system indicator. If it's not an extended or unused partition then we're done. */
if ((MasterBootRecord->PartitionTable[Index].SystemIndicator != PARTITION_ENTRY_UNUSED) &&
(MasterBootRecord->PartitionTable[Index].SystemIndicator != PARTITION_EXTENDED) &&
(MasterBootRecord->PartitionTable[Index].SystemIndicator != PARTITION_XINT13_EXTENDED))
{
RtlCopyMemory(PartitionTableEntry, &MasterBootRecord->PartitionTable[Index], sizeof(PARTITION_TABLE_ENTRY));
return TRUE;
}
}
return FALSE;
}
static BOOLEAN
DiskGetFirstExtendedPartitionEntry(
IN PMASTER_BOOT_RECORD MasterBootRecord,
OUT PPARTITION_TABLE_ENTRY PartitionTableEntry)
{
ULONG Index;
for (Index = 0; Index < 4; Index++)
{
/* Check the system indicator. If it an extended partition then we're done. */
if ((MasterBootRecord->PartitionTable[Index].SystemIndicator == PARTITION_EXTENDED) ||
(MasterBootRecord->PartitionTable[Index].SystemIndicator == PARTITION_XINT13_EXTENDED))
{
RtlCopyMemory(PartitionTableEntry, &MasterBootRecord->PartitionTable[Index], sizeof(PARTITION_TABLE_ENTRY));
return TRUE;
}
}
return FALSE;
}
BOOLEAN
DiskGetActivePartitionEntry(
IN UCHAR DriveNumber,
OUT PPARTITION_TABLE_ENTRY PartitionTableEntry,
OUT PULONG ActivePartition)
{
ULONG BootablePartitionCount = 0;
ULONG CurrentPartitionNumber;
ULONG Index;
MASTER_BOOT_RECORD MasterBootRecord;
PPARTITION_TABLE_ENTRY ThisPartitionTableEntry;
*ActivePartition = 0;
/* Read master boot record */
if (!DiskReadBootRecord(DriveNumber, 0, &MasterBootRecord))
{
return FALSE;
}
CurrentPartitionNumber = 0;
for (Index = 0; Index < 4; Index++)
{
ThisPartitionTableEntry = &MasterBootRecord.PartitionTable[Index];
if (ThisPartitionTableEntry->SystemIndicator != PARTITION_ENTRY_UNUSED &&
ThisPartitionTableEntry->SystemIndicator != PARTITION_EXTENDED &&
ThisPartitionTableEntry->SystemIndicator != PARTITION_XINT13_EXTENDED)
{
CurrentPartitionNumber++;
/* Test if this is the bootable partition */
if (ThisPartitionTableEntry->BootIndicator == 0x80)
{
BootablePartitionCount++;
*ActivePartition = CurrentPartitionNumber;
/* Copy the partition table entry */
RtlCopyMemory(PartitionTableEntry,
ThisPartitionTableEntry,
sizeof(PARTITION_TABLE_ENTRY));
}
}
}
/* Make sure there was only one bootable partition */
if (BootablePartitionCount == 0)
{
ERR("No bootable (active) partitions found.\n");
return FALSE;
}
else if (BootablePartitionCount != 1)
{
ERR("Too many bootable (active) partitions found.\n");
return FALSE;
}
return TRUE;
}
BOOLEAN
DiskGetMbrPartitionEntry(
IN UCHAR DriveNumber,
IN ULONG PartitionNumber,
OUT PPARTITION_TABLE_ENTRY PartitionTableEntry)
{
MASTER_BOOT_RECORD MasterBootRecord;
PARTITION_TABLE_ENTRY ExtendedPartitionTableEntry;
ULONG ExtendedPartitionNumber;
ULONG ExtendedPartitionOffset;
ULONG Index;
ULONG CurrentPartitionNumber;
PPARTITION_TABLE_ENTRY ThisPartitionTableEntry;
/* Read master boot record */
if (!DiskReadBootRecord(DriveNumber, 0, &MasterBootRecord))
{
return FALSE;
}
CurrentPartitionNumber = 0;
for (Index = 0; Index < 4; Index++)
{
ThisPartitionTableEntry = &MasterBootRecord.PartitionTable[Index];
if (ThisPartitionTableEntry->SystemIndicator != PARTITION_ENTRY_UNUSED &&
ThisPartitionTableEntry->SystemIndicator != PARTITION_EXTENDED &&
ThisPartitionTableEntry->SystemIndicator != PARTITION_XINT13_EXTENDED)
{
CurrentPartitionNumber++;
}
if (PartitionNumber == CurrentPartitionNumber)
{
RtlCopyMemory(PartitionTableEntry, ThisPartitionTableEntry, sizeof(PARTITION_TABLE_ENTRY));
return TRUE;
}
}
/*
* They want an extended partition entry so we will need
* to loop through all the extended partitions on the disk
* and return the one they want.
*/
ExtendedPartitionNumber = PartitionNumber - CurrentPartitionNumber - 1;
/*
* Set the initial relative starting sector to 0.
* This is because extended partition starting
* sectors a numbered relative to their parent.
*/
ExtendedPartitionOffset = 0;
for (Index = 0; Index <= ExtendedPartitionNumber; Index++)
{
/* Get the extended partition table entry */
if (!DiskGetFirstExtendedPartitionEntry(&MasterBootRecord, &ExtendedPartitionTableEntry))
{
return FALSE;
}
/* Adjust the relative starting sector of the partition */
ExtendedPartitionTableEntry.SectorCountBeforePartition += ExtendedPartitionOffset;
if (ExtendedPartitionOffset == 0)
{
/* Set the start of the parrent extended partition */
ExtendedPartitionOffset = ExtendedPartitionTableEntry.SectorCountBeforePartition;
}
/* Read the partition boot record */
if (!DiskReadBootRecord(DriveNumber, ExtendedPartitionTableEntry.SectorCountBeforePartition, &MasterBootRecord))
{
return FALSE;
}
/* Get the first real partition table entry */
if (!DiskGetFirstPartitionEntry(&MasterBootRecord, PartitionTableEntry))
{
return FALSE;
}
/* Now correct the start sector of the partition */
PartitionTableEntry->SectorCountBeforePartition += ExtendedPartitionTableEntry.SectorCountBeforePartition;
}
/*
* When we get here we should have the correct entry already
* stored in PartitionTableEntry, so just return TRUE.
*/
return TRUE;
}
#endif
boot/freeldr/freeldr/disk/part_mbr.h
+73
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@@ -0,0 +1,73 @@
/*
* PROJECT: FreeLoader
* LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
* PURPOSE: MBR partitioning scheme support
* COPYRIGHT: Copyright 2002-2003 Brian Palmer <[email protected]>
*/
#pragma once
#include <pshpack1.h>
/*
* Define the structure of a partition table entry
*/
typedef struct _PARTITION_TABLE_ENTRY
{
UCHAR BootIndicator; // 0x00 - non-bootable partition,
// 0x80 - bootable partition (one partition only)
UCHAR StartHead; // Beginning head number
UCHAR StartSector; // Beginning sector (2 high bits of cylinder #)
UCHAR StartCylinder; // Beginning cylinder# (low order bits of cylinder #)
UCHAR SystemIndicator; // System indicator
UCHAR EndHead; // Ending head number
UCHAR EndSector; // Ending sector (2 high bits of cylinder #)
UCHAR EndCylinder; // Ending cylinder# (low order bits of cylinder #)
ULONG SectorCountBeforePartition; // Number of sectors preceding the partition
ULONG PartitionSectorCount; // Number of sectors in the partition
} PARTITION_TABLE_ENTRY, *PPARTITION_TABLE_ENTRY;
C_ASSERT(sizeof(PARTITION_TABLE_ENTRY) == 16);
/*
* Define the structure of the master boot record
*/
typedef struct _MASTER_BOOT_RECORD
{
UCHAR MasterBootRecordCodeAndData[0x1b8]; /* 0x000 */
ULONG Signature; /* 0x1B8 */
USHORT Reserved; /* 0x1BC */
PARTITION_TABLE_ENTRY PartitionTable[4]; /* 0x1BE */
USHORT MasterBootRecordMagic; /* 0x1FE */
} MASTER_BOOT_RECORD, *PMASTER_BOOT_RECORD;
C_ASSERT(sizeof(MASTER_BOOT_RECORD) == 512);
#include <poppack.h>
/*
* Partition type defines (of PSDK)
*/
#include <reactos/rosioctl.h>
#define PARTITION_ENTRY_UNUSED 0x00 // Entry unused
#define PARTITION_FAT_12 0x01 // 12-bit FAT entries
#define PARTITION_XENIX_1 0x02 // Xenix
#define PARTITION_XENIX_2 0x03 // Xenix
#define PARTITION_FAT_16 0x04 // 16-bit FAT entries
#define PARTITION_EXTENDED 0x05 // Extended partition entry
#define PARTITION_HUGE 0x06 // Huge partition MS-DOS V4
#define PARTITION_IFS 0x07 // IFS Partition
#define PARTITION_OS2BOOTMGR 0x0A // OS/2 Boot Manager/OPUS/Coherent swap
#define PARTITION_FAT32 0x0B // FAT32
#define PARTITION_FAT32_XINT13 0x0C // FAT32 using extended int13 services
#define PARTITION_XINT13 0x0E // Win95 partition using extended int13 services
#define PARTITION_XINT13_EXTENDED 0x0F // Same as type 5 but uses extended int13 services
#define PARTITION_NTFS 0x17 // NTFS
#define PARTITION_PREP 0x41 // PowerPC Reference Platform (PReP) Boot Partition
#define PARTITION_LDM 0x42 // Logical Disk Manager partition
#define PARTITION_UNIX 0x63 // Unix
#define VALID_NTFT 0xC0 // NTFT uses high order bits
#define PARTITION_NTFT 0x80 // NTFT partition
#define PARTITION_GPT 0xEE // GPT protective partition
#ifdef __REACTOS__
#define PARTITION_OLD_LINUX 0x43
#define PARTITION_LINUX 0x83
#endif
boot/freeldr/freeldr/disk/partition.c
+9 -261
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@@ -1,20 +1,9 @@
/*
* FreeLoader
* Copyright (C) 1998-2003 Brian Palmer <[email protected]>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
* PROJECT: FreeLoader
* LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
* PURPOSE: Block Device partition management
* COPYRIGHT: Copyright 2002-2003 Brian Palmer <[email protected]>
* Copyright 2019 Stanislav Motylkov <[email protected]>
*/
#ifndef _M_ARM
@@ -26,29 +15,7 @@ DBG_DEFAULT_CHANNEL(DISK);
#define MaxDriveNumber 0xFF
static PARTITION_STYLE DiskPartitionType[MaxDriveNumber + 1];
/* BRFR signature at disk offset 0x600 */
#define XBOX_SIGNATURE_SECTOR 3
#define XBOX_SIGNATURE ('B' | ('R' << 8) | ('F' << 16) | ('R' << 24))
/* Default hardcoded partition number to boot from Xbox disk */
#define FATX_DATA_PARTITION 1
static struct
{
ULONG SectorCountBeforePartition;
ULONG PartitionSectorCount;
UCHAR SystemIndicator;
} XboxPartitions[] =
{
/* This is in the \Device\Harddisk0\Partition.. order used by the Xbox kernel */
{ 0x0055F400, 0x0098F800, PARTITION_FAT32 }, /* Store , E: */
{ 0x00465400, 0x000FA000, PARTITION_FAT_16 }, /* System, C: */
{ 0x00000400, 0x00177000, PARTITION_FAT_16 }, /* Cache1, X: */
{ 0x00177400, 0x00177000, PARTITION_FAT_16 }, /* Cache2, Y: */
{ 0x002EE400, 0x00177000, PARTITION_FAT_16 } /* Cache3, Z: */
};
static BOOLEAN
BOOLEAN
DiskReadBootRecord(
IN UCHAR DriveNumber,
IN ULONGLONG LogicalSectorNumber,
@@ -87,228 +54,8 @@ DiskReadBootRecord(
return (BootRecord->MasterBootRecordMagic == 0xaa55);
}
static BOOLEAN
DiskGetFirstPartitionEntry(
IN PMASTER_BOOT_RECORD MasterBootRecord,
OUT PPARTITION_TABLE_ENTRY PartitionTableEntry)
{
ULONG Index;
for (Index = 0; Index < 4; Index++)
{
/* Check the system indicator. If it's not an extended or unused partition then we're done. */
if ((MasterBootRecord->PartitionTable[Index].SystemIndicator != PARTITION_ENTRY_UNUSED) &&
(MasterBootRecord->PartitionTable[Index].SystemIndicator != PARTITION_EXTENDED) &&
(MasterBootRecord->PartitionTable[Index].SystemIndicator != PARTITION_XINT13_EXTENDED))
{
RtlCopyMemory(PartitionTableEntry, &MasterBootRecord->PartitionTable[Index], sizeof(PARTITION_TABLE_ENTRY));
return TRUE;
}
}
return FALSE;
}
static BOOLEAN
DiskGetFirstExtendedPartitionEntry(
IN PMASTER_BOOT_RECORD MasterBootRecord,
OUT PPARTITION_TABLE_ENTRY PartitionTableEntry)
{
ULONG Index;
for (Index = 0; Index < 4; Index++)
{
/* Check the system indicator. If it an extended partition then we're done. */
if ((MasterBootRecord->PartitionTable[Index].SystemIndicator == PARTITION_EXTENDED) ||
(MasterBootRecord->PartitionTable[Index].SystemIndicator == PARTITION_XINT13_EXTENDED))
{
RtlCopyMemory(PartitionTableEntry, &MasterBootRecord->PartitionTable[Index], sizeof(PARTITION_TABLE_ENTRY));
return TRUE;
}
}
return FALSE;
}
static BOOLEAN
DiskGetActivePartitionEntry(
IN UCHAR DriveNumber,
OUT PPARTITION_TABLE_ENTRY PartitionTableEntry,
OUT PULONG ActivePartition)
{
ULONG BootablePartitionCount = 0;
ULONG CurrentPartitionNumber;
ULONG Index;
MASTER_BOOT_RECORD MasterBootRecord;
PPARTITION_TABLE_ENTRY ThisPartitionTableEntry;
*ActivePartition = 0;
/* Read master boot record */
if (!DiskReadBootRecord(DriveNumber, 0, &MasterBootRecord))
{
return FALSE;
}
CurrentPartitionNumber = 0;
for (Index = 0; Index < 4; Index++)
{
ThisPartitionTableEntry = &MasterBootRecord.PartitionTable[Index];
if (ThisPartitionTableEntry->SystemIndicator != PARTITION_ENTRY_UNUSED &&
ThisPartitionTableEntry->SystemIndicator != PARTITION_EXTENDED &&
ThisPartitionTableEntry->SystemIndicator != PARTITION_XINT13_EXTENDED)
{
CurrentPartitionNumber++;
/* Test if this is the bootable partition */
if (ThisPartitionTableEntry->BootIndicator == 0x80)
{
BootablePartitionCount++;
*ActivePartition = CurrentPartitionNumber;
/* Copy the partition table entry */
RtlCopyMemory(PartitionTableEntry,
ThisPartitionTableEntry,
sizeof(PARTITION_TABLE_ENTRY));
}
}
}
/* Make sure there was only one bootable partition */
if (BootablePartitionCount == 0)
{
ERR("No bootable (active) partitions found.\n");
return FALSE;
}
else if (BootablePartitionCount != 1)
{
ERR("Too many bootable (active) partitions found.\n");
return FALSE;
}
return TRUE;
}
static BOOLEAN
DiskGetMbrPartitionEntry(
IN UCHAR DriveNumber,
IN ULONG PartitionNumber,
OUT PPARTITION_TABLE_ENTRY PartitionTableEntry)
{
MASTER_BOOT_RECORD MasterBootRecord;
PARTITION_TABLE_ENTRY ExtendedPartitionTableEntry;
ULONG ExtendedPartitionNumber;
ULONG ExtendedPartitionOffset;
ULONG Index;
ULONG CurrentPartitionNumber;
PPARTITION_TABLE_ENTRY ThisPartitionTableEntry;
/* Read master boot record */
if (!DiskReadBootRecord(DriveNumber, 0, &MasterBootRecord))
{
return FALSE;
}
CurrentPartitionNumber = 0;
for (Index = 0; Index < 4; Index++)
{
ThisPartitionTableEntry = &MasterBootRecord.PartitionTable[Index];
if (ThisPartitionTableEntry->SystemIndicator != PARTITION_ENTRY_UNUSED &&
ThisPartitionTableEntry->SystemIndicator != PARTITION_EXTENDED &&
ThisPartitionTableEntry->SystemIndicator != PARTITION_XINT13_EXTENDED)
{
CurrentPartitionNumber++;
}
if (PartitionNumber == CurrentPartitionNumber)
{
RtlCopyMemory(PartitionTableEntry, ThisPartitionTableEntry, sizeof(PARTITION_TABLE_ENTRY));
return TRUE;
}
}
/*
* They want an extended partition entry so we will need
* to loop through all the extended partitions on the disk
* and return the one they want.
*/
ExtendedPartitionNumber = PartitionNumber - CurrentPartitionNumber - 1;
/*
* Set the initial relative starting sector to 0.
* This is because extended partition starting
* sectors a numbered relative to their parent.
*/
ExtendedPartitionOffset = 0;
for (Index = 0; Index <= ExtendedPartitionNumber; Index++)
{
/* Get the extended partition table entry */
if (!DiskGetFirstExtendedPartitionEntry(&MasterBootRecord, &ExtendedPartitionTableEntry))
{
return FALSE;
}
/* Adjust the relative starting sector of the partition */
ExtendedPartitionTableEntry.SectorCountBeforePartition += ExtendedPartitionOffset;
if (ExtendedPartitionOffset == 0)
{
/* Set the start of the parrent extended partition */
ExtendedPartitionOffset = ExtendedPartitionTableEntry.SectorCountBeforePartition;
}
/* Read the partition boot record */
if (!DiskReadBootRecord(DriveNumber, ExtendedPartitionTableEntry.SectorCountBeforePartition, &MasterBootRecord))
{
return FALSE;
}
/* Get the first real partition table entry */
if (!DiskGetFirstPartitionEntry(&MasterBootRecord, PartitionTableEntry))
{
return FALSE;
}
/* Now correct the start sector of the partition */
PartitionTableEntry->SectorCountBeforePartition += ExtendedPartitionTableEntry.SectorCountBeforePartition;
}
/*
* When we get here we should have the correct entry already
* stored in PartitionTableEntry, so just return TRUE.
*/
return TRUE;
}
static BOOLEAN
DiskGetBrfrPartitionEntry(
IN UCHAR DriveNumber,
IN ULONG PartitionNumber,
OUT PPARTITION_TABLE_ENTRY PartitionTableEntry)
{
/*
* Get partition entry of an Xbox-standard BRFR partitioned disk.
*/
if (PartitionNumber >= 1 && PartitionNumber <= sizeof(XboxPartitions) / sizeof(XboxPartitions[0]) &&
MachDiskReadLogicalSectors(DriveNumber, XBOX_SIGNATURE_SECTOR, 1, DiskReadBuffer))
{
if (*((PULONG)DiskReadBuffer) != XBOX_SIGNATURE)
{
/* No magic Xbox partitions */
return FALSE;
}
RtlZeroMemory(PartitionTableEntry, sizeof(PARTITION_TABLE_ENTRY));
PartitionTableEntry->SystemIndicator = XboxPartitions[PartitionNumber - 1].SystemIndicator;
PartitionTableEntry->SectorCountBeforePartition = XboxPartitions[PartitionNumber - 1].SectorCountBeforePartition;
PartitionTableEntry->PartitionSectorCount = XboxPartitions[PartitionNumber - 1].PartitionSectorCount;
return TRUE;
}
/* Partition does not exist */
return FALSE;
}
#include "part_mbr.c"
#include "part_brfr.c"
VOID
DiskDetectPartitionType(
@@ -363,6 +110,7 @@ DiskDetectPartitionType(
TRACE("Drive 0x%X partition type unknown\n", DriveNumber);
}
// FIXME: This function is specific to BIOS-based PC platform.
BOOLEAN
DiskGetBootPartitionEntry(
IN UCHAR DriveNumber,
boot/freeldr/freeldr/include/disk.h
+3 -46
View File
@@ -19,8 +19,6 @@
#pragma once
#include <reactos/rosioctl.h>
/* FreeLoader-specific disk geometry structure */
typedef struct _GEOMETRY
{
@@ -31,67 +29,26 @@ typedef struct _GEOMETRY
ULONGLONG Sectors; ///< Total number of disk sectors/LBA blocks
} GEOMETRY, *PGEOMETRY;
#include <pshpack1.h>
/*
* Define the structure of a partition table entry
*/
typedef struct _PARTITION_TABLE_ENTRY
{
UCHAR BootIndicator; // 0x00 - non-bootable partition,
// 0x80 - bootable partition (one partition only)
UCHAR StartHead; // Beginning head number
UCHAR StartSector; // Beginning sector (2 high bits of cylinder #)
UCHAR StartCylinder; // Beginning cylinder# (low order bits of cylinder #)
UCHAR SystemIndicator; // System indicator
UCHAR EndHead; // Ending head number
UCHAR EndSector; // Ending sector (2 high bits of cylinder #)
UCHAR EndCylinder; // Ending cylinder# (low order bits of cylinder #)
ULONG SectorCountBeforePartition; // Number of sectors preceding the partition
ULONG PartitionSectorCount; // Number of sectors in the partition
} PARTITION_TABLE_ENTRY, *PPARTITION_TABLE_ENTRY;
/*
* Define the structure of the master boot record
*/
typedef struct _MASTER_BOOT_RECORD
{
UCHAR MasterBootRecordCodeAndData[0x1b8]; /* 0x000 */
ULONG Signature; /* 0x1B8 */
USHORT Reserved; /* 0x1BC */
PARTITION_TABLE_ENTRY PartitionTable[4]; /* 0x1BE */
USHORT MasterBootRecordMagic; /* 0x1FE */
} MASTER_BOOT_RECORD, *PMASTER_BOOT_RECORD;
#include <poppack.h>
// Some modules use the explicit MBR structures. TODO: Deprecate
#include "disk/part_mbr.h"
/*
* Partition type defines (of PSDK)
*/
#define PARTITION_ENTRY_UNUSED 0x00 // Entry unused
#define PARTITION_FAT_12 0x01 // 12-bit FAT entries
#define PARTITION_XENIX_1 0x02 // Xenix
#define PARTITION_XENIX_2 0x03 // Xenix
#define PARTITION_FAT_16 0x04 // 16-bit FAT entries
#define PARTITION_EXTENDED 0x05 // Extended partition entry
#define PARTITION_HUGE 0x06 // Huge partition MS-DOS V4
#define PARTITION_IFS 0x07 // IFS Partition
#define PARTITION_OS2BOOTMGR 0x0A // OS/2 Boot Manager/OPUS/Coherent swap
#define PARTITION_FAT32 0x0B // FAT32
#define PARTITION_FAT32_XINT13 0x0C // FAT32 using extended int13 services
#define PARTITION_XINT13 0x0E // Win95 partition using extended int13 services
#define PARTITION_XINT13_EXTENDED 0x0F // Same as type 5 but uses extended int13 services
#define PARTITION_NTFS 0x17 // NTFS
#define PARTITION_PREP 0x41 // PowerPC Reference Platform (PReP) Boot Partition
#define PARTITION_LDM 0x42 // Logical Disk Manager partition
#define PARTITION_UNIX 0x63 // Unix
#define VALID_NTFT 0xC0 // NTFT uses high order bits
#define PARTITION_NTFT 0x80 // NTFT partition
#define PARTITION_GPT 0xEE // GPT protective partition
#ifdef __REACTOS__
#define PARTITION_OLD_LINUX 0x43
#define PARTITION_LINUX 0x83
#endif
///////////////////////////////////////////////////////////////////////////////
//