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reactos/base/setup/lib/fsutil.c
Hermès Bélusca-Maïto d7c1d220b5
[SETUPLIB][REACTOS][USETUP] Turn setuplib into a DLL shared between TUI and GUI 1st-stage setups (#7523) 
CORE-13525

Notes:
- Most of the exported functions have been turned from default cdecl to explicit stdcall / "NTAPI".
- The two InitializeSetup() phases have been collapsed to make the initialization simpler.

Average reductions (percentages; see PR #7523 for actual numbers):

x86 Debug builds:
reactos.exe: 35.1%
smss.exe   : 39.8%
Total (including setuplib.dll): 17.9%

x86 Release builds:
reactos.exe: 22.3%
smss.exe   : 25.0%
Total (including setuplib.dll): 10.6%

x64 Debug builds:
reactos.exe: 40.6%
smss.exe   : 41.6%
Total (including setuplib.dll): 20.0%

x64 Release builds:
reactos.exe: 22.8%
smss.exe   : 22.3%
Total (including setuplib.dll): 10.1%
2024-12-02 23:05:38 +01:00

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/*
* PROJECT: ReactOS Setup Library
* LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
* PURPOSE: Filesystem Format and ChkDsk support functions
* COPYRIGHT: Copyright 2003-2019 Casper S. Hornstrup <chorns@users.sourceforge.net>
* Copyright 2017-2024 Hermès Bélusca-Maïto <hermes.belusca-maito@reactos.org>
*/
//
// See also: https://git.reactos.org/?p=reactos.git;a=blob;f=reactos/dll/win32/fmifs/init.c;h=e895f5ef9cae4806123f6bbdd3dfed37ec1c8d33;hb=b9db9a4e377a2055f635b2fb69fef4e1750d219c
// for how to get FS providers in a dynamic way. In the (near) future we may
// consider merging some of this code with us into a fmifs / fsutil / fslib library...
//
/* INCLUDES *****************************************************************/
#include "precomp.h"
#include "partlist.h"
#include "fsrec.h"
#include "bootcode.h"
#include "fsutil.h"
#include <fslib/vfatlib.h>
#include <fslib/btrfslib.h>
// #include <fslib/ext2lib.h>
// #include <fslib/ntfslib.h>
#define NDEBUG
#include <debug.h>
/* TYPEDEFS *****************************************************************/
#include <pshpack1.h>
typedef struct _FAT_BOOTSECTOR
{
UCHAR JumpBoot[3]; // Jump instruction to boot code
CHAR OemName[8]; // "MSWIN4.1" for MS formatted volumes
USHORT BytesPerSector; // Bytes per sector
UCHAR SectorsPerCluster; // Number of sectors in a cluster
USHORT ReservedSectors; // Reserved sectors, usually 1 (the bootsector)
UCHAR NumberOfFats; // Number of FAT tables
USHORT RootDirEntries; // Number of root directory entries (fat12/16)
USHORT TotalSectors; // Number of total sectors on the drive, 16-bit
UCHAR MediaDescriptor; // Media descriptor byte
USHORT SectorsPerFat; // Sectors per FAT table (fat12/16)
USHORT SectorsPerTrack; // Number of sectors in a track
USHORT NumberOfHeads; // Number of heads on the disk
ULONG HiddenSectors; // Hidden sectors (sectors before the partition start like the partition table)
ULONG TotalSectorsBig; // This field is the new 32-bit total count of sectors on the volume
UCHAR DriveNumber; // Int 0x13 drive number (e.g. 0x80)
UCHAR Reserved1; // Reserved (used by Windows NT). Code that formats FAT volumes should always set this byte to 0.
UCHAR BootSignature; // Extended boot signature (0x29). This is a signature byte that indicates that the following three fields in the boot sector are present.
ULONG VolumeSerialNumber; // Volume serial number
CHAR VolumeLabel[11]; // Volume label. This field matches the 11-byte volume label recorded in the root directory
CHAR FileSystemType[8]; // One of the strings "FAT12 ", "FAT16 ", or "FAT "
UCHAR BootCodeAndData[448]; // The remainder of the boot sector
USHORT BootSectorMagic; // 0xAA55
} FAT_BOOTSECTOR, *PFAT_BOOTSECTOR;
C_ASSERT(sizeof(FAT_BOOTSECTOR) == FAT_BOOTSECTOR_SIZE);
typedef struct _FAT32_BOOTSECTOR
{
UCHAR JumpBoot[3]; // Jump instruction to boot code
CHAR OemName[8]; // "MSWIN4.1" for MS formatted volumes
USHORT BytesPerSector; // Bytes per sector
UCHAR SectorsPerCluster; // Number of sectors in a cluster
USHORT ReservedSectors; // Reserved sectors, usually 1 (the bootsector)
UCHAR NumberOfFats; // Number of FAT tables
USHORT RootDirEntries; // Number of root directory entries (fat12/16)
USHORT TotalSectors; // Number of total sectors on the drive, 16-bit
UCHAR MediaDescriptor; // Media descriptor byte
USHORT SectorsPerFat; // Sectors per FAT table (fat12/16)
USHORT SectorsPerTrack; // Number of sectors in a track
USHORT NumberOfHeads; // Number of heads on the disk
ULONG HiddenSectors; // Hidden sectors (sectors before the partition start like the partition table)
ULONG TotalSectorsBig; // This field is the new 32-bit total count of sectors on the volume
ULONG SectorsPerFatBig; // This field is the FAT32 32-bit count of sectors occupied by ONE FAT. BPB_FATSz16 must be 0
USHORT ExtendedFlags; // Extended flags (fat32)
USHORT FileSystemVersion; // File system version (fat32)
ULONG RootDirStartCluster; // Starting cluster of the root directory (fat32)
USHORT FsInfo; // Sector number of FSINFO structure in the reserved area of the FAT32 volume. Usually 1.
USHORT BackupBootSector; // If non-zero, indicates the sector number in the reserved area of the volume of a copy of the boot record. Usually 6.
UCHAR Reserved[12]; // Reserved for future expansion
UCHAR DriveNumber; // Int 0x13 drive number (e.g. 0x80)
UCHAR Reserved1; // Reserved (used by Windows NT). Code that formats FAT volumes should always set this byte to 0.
UCHAR BootSignature; // Extended boot signature (0x29). This is a signature byte that indicates that the following three fields in the boot sector are present.
ULONG VolumeSerialNumber; // Volume serial number
CHAR VolumeLabel[11]; // Volume label. This field matches the 11-byte volume label recorded in the root directory
CHAR FileSystemType[8]; // Always set to the string "FAT32 "
UCHAR BootCodeAndData[420]; // The remainder of the boot sector
USHORT BootSectorMagic; // 0xAA55
} FAT32_BOOTSECTOR, *PFAT32_BOOTSECTOR;
C_ASSERT(sizeof(FAT32_BOOTSECTOR) == FAT32_BOOTSECTOR_SIZE);
typedef struct _BTRFS_BOOTSECTOR
{
UCHAR JumpBoot[3];
UCHAR ChunkMapSize;
UCHAR BootDrive;
ULONGLONG PartitionStartLBA;
UCHAR Fill[1521]; // 1536 - 15
USHORT BootSectorMagic;
} BTRFS_BOOTSECTOR, *PBTRFS_BOOTSECTOR;
C_ASSERT(sizeof(BTRFS_BOOTSECTOR) == BTRFS_BOOTSECTOR_SIZE);
typedef struct _NTFS_BOOTSECTOR
{
UCHAR Jump[3];
UCHAR OEMID[8];
USHORT BytesPerSector;
UCHAR SectorsPerCluster;
UCHAR Unused0[7];
UCHAR MediaId;
UCHAR Unused1[2];
USHORT SectorsPerTrack;
USHORT Heads;
UCHAR Unused2[4];
UCHAR Unused3[4];
USHORT Unknown[2];
ULONGLONG SectorCount;
ULONGLONG MftLocation;
ULONGLONG MftMirrLocation;
CHAR ClustersPerMftRecord;
UCHAR Unused4[3];
CHAR ClustersPerIndexRecord;
UCHAR Unused5[3];
ULONGLONG SerialNumber;
UCHAR Checksum[4];
UCHAR BootStrap[426];
USHORT EndSector;
UCHAR BootCodeAndData[7680]; // The remainder of the boot sector (8192 - 512)
} NTFS_BOOTSECTOR, *PNTFS_BOOTSECTOR;
C_ASSERT(sizeof(NTFS_BOOTSECTOR) == NTFS_BOOTSECTOR_SIZE);
// TODO: Add more bootsector structures!
#include <poppack.h>
/* LOCALS *******************************************************************/
/** IFS_PROVIDER **/
typedef struct _FILE_SYSTEM
{
PCWSTR FileSystemName;
PULIB_FORMAT FormatFunc;
PULIB_CHKDSK ChkdskFunc;
} FILE_SYSTEM, *PFILE_SYSTEM;
/* The list of file systems on which we can install ReactOS */
static FILE_SYSTEM RegisteredFileSystems[] =
{
/* NOTE: The FAT formatter will automatically
* determine whether to use FAT12/16 or FAT32. */
{ L"FAT" , VfatFormat, VfatChkdsk },
{ L"FAT32", VfatFormat, VfatChkdsk },
#if 0
{ L"FATX" , VfatxFormat, VfatxChkdsk },
{ L"NTFS" , NtfsFormat, NtfsChkdsk },
#endif
{ L"BTRFS", BtrfsFormat, BtrfsChkdsk },
#if 0
{ L"EXT2" , Ext2Format, Ext2Chkdsk },
{ L"EXT3" , Ext2Format, Ext2Chkdsk },
{ L"EXT4" , Ext2Format, Ext2Chkdsk },
#endif
};
/* FUNCTIONS ****************************************************************/
/** QueryAvailableFileSystemFormat() **/
BOOLEAN
NTAPI
GetRegisteredFileSystems(
IN ULONG Index,
OUT PCWSTR* FileSystemName)
{
if (Index >= ARRAYSIZE(RegisteredFileSystems))
return FALSE;
*FileSystemName = RegisteredFileSystems[Index].FileSystemName;
return TRUE;
}
/** GetProvider() **/
static PFILE_SYSTEM
GetFileSystemByName(
IN PCWSTR FileSystemName)
{
#if 0 // Reenable when the list of registered FSes will again be dynamic
PLIST_ENTRY ListEntry;
PFILE_SYSTEM_ITEM Item;
ListEntry = List->ListHead.Flink;
while (ListEntry != &List->ListHead)
{
Item = CONTAINING_RECORD(ListEntry, FILE_SYSTEM_ITEM, ListEntry);
if (Item->FileSystemName &&
(_wcsicmp(FileSystemName, Item->FileSystemName) == 0))
{
return Item;
}
ListEntry = ListEntry->Flink;
}
#else
ULONG Count = ARRAYSIZE(RegisteredFileSystems);
PFILE_SYSTEM FileSystems = RegisteredFileSystems;
ASSERT(FileSystems && Count != 0);
while (Count--)
{
if (FileSystems->FileSystemName &&
(_wcsicmp(FileSystemName, FileSystems->FileSystemName) == 0))
{
return FileSystems;
}
++FileSystems;
}
#endif
return NULL;
}
/** ChkdskEx() **/
NTSTATUS
NTAPI
ChkdskFileSystem_UStr(
_In_ PUNICODE_STRING DriveRoot,
_In_ PCWSTR FileSystemName,
_In_ BOOLEAN FixErrors,
_In_ BOOLEAN Verbose,
_In_ BOOLEAN CheckOnlyIfDirty,
_In_ BOOLEAN ScanDrive,
_In_opt_ PFMIFSCALLBACK Callback)
{
PFILE_SYSTEM FileSystem;
NTSTATUS Status;
BOOLEAN Success;
FileSystem = GetFileSystemByName(FileSystemName);
if (!FileSystem || !FileSystem->ChkdskFunc)
{
// Success = FALSE;
// Callback(DONE, 0, &Success);
return STATUS_NOT_SUPPORTED;
}
Status = STATUS_SUCCESS;
Success = FileSystem->ChkdskFunc(DriveRoot,
Callback,
FixErrors,
Verbose,
CheckOnlyIfDirty,
ScanDrive,
NULL,
NULL,
NULL,
NULL,
(PULONG)&Status);
if (!Success)
DPRINT1("ChkdskFunc() failed with Status 0x%lx\n", Status);
// Callback(DONE, 0, &Success);
return Status;
}
NTSTATUS
NTAPI
ChkdskFileSystem(
_In_ PCWSTR DriveRoot,
_In_ PCWSTR FileSystemName,
_In_ BOOLEAN FixErrors,
_In_ BOOLEAN Verbose,
_In_ BOOLEAN CheckOnlyIfDirty,
_In_ BOOLEAN ScanDrive,
_In_opt_ PFMIFSCALLBACK Callback)
{
UNICODE_STRING DriveRootU;
RtlInitUnicodeString(&DriveRootU, DriveRoot);
return ChkdskFileSystem_UStr(&DriveRootU,
FileSystemName,
FixErrors,
Verbose,
CheckOnlyIfDirty,
ScanDrive,
Callback);
}
/** FormatEx() **/
NTSTATUS
NTAPI
FormatFileSystem_UStr(
_In_ PUNICODE_STRING DriveRoot,
_In_ PCWSTR FileSystemName,
_In_ FMIFS_MEDIA_FLAG MediaFlag,
_In_opt_ PUNICODE_STRING Label,
_In_ BOOLEAN QuickFormat,
_In_ ULONG ClusterSize,
_In_opt_ PFMIFSCALLBACK Callback)
{
PFILE_SYSTEM FileSystem;
BOOLEAN Success;
BOOLEAN BackwardCompatible = FALSE; // Default to latest FS versions.
MEDIA_TYPE MediaType;
FileSystem = GetFileSystemByName(FileSystemName);
if (!FileSystem || !FileSystem->FormatFunc)
{
// Success = FALSE;
// Callback(DONE, 0, &Success);
return STATUS_NOT_SUPPORTED;
}
/* Set the BackwardCompatible flag in case we format with older FAT12/16 */
if (_wcsicmp(FileSystemName, L"FAT") == 0)
BackwardCompatible = TRUE;
// else if (_wcsicmp(FileSystemName, L"FAT32") == 0)
// BackwardCompatible = FALSE;
/* Convert the FMIFS MediaFlag to a NT MediaType */
// FIXME: Actually covert all the possible flags.
switch (MediaFlag)
{
case FMIFS_FLOPPY:
MediaType = F5_320_1024; // FIXME: This is hardfixed!
break;
case FMIFS_REMOVABLE:
MediaType = RemovableMedia;
break;
case FMIFS_HARDDISK:
MediaType = FixedMedia;
break;
default:
DPRINT1("Unknown FMIFS MediaFlag %d, converting 1-to-1 to NT MediaType\n",
MediaFlag);
MediaType = (MEDIA_TYPE)MediaFlag;
break;
}
Success = FileSystem->FormatFunc(DriveRoot,
Callback,
QuickFormat,
BackwardCompatible,
MediaType,
Label,
ClusterSize);
if (!Success)
DPRINT1("FormatFunc() failed\n");
// Callback(DONE, 0, &Success);
return (Success ? STATUS_SUCCESS : STATUS_UNSUCCESSFUL);
}
NTSTATUS
NTAPI
FormatFileSystem(
_In_ PCWSTR DriveRoot,
_In_ PCWSTR FileSystemName,
_In_ FMIFS_MEDIA_FLAG MediaFlag,
_In_opt_ PCWSTR Label,
_In_ BOOLEAN QuickFormat,
_In_ ULONG ClusterSize,
_In_opt_ PFMIFSCALLBACK Callback)
{
UNICODE_STRING DriveRootU;
UNICODE_STRING LabelU;
RtlInitUnicodeString(&DriveRootU, DriveRoot);
RtlInitUnicodeString(&LabelU, Label);
return FormatFileSystem_UStr(&DriveRootU,
FileSystemName,
MediaFlag,
&LabelU,
QuickFormat,
ClusterSize,
Callback);
}
//
// Bootsector routines
//
NTSTATUS
InstallFatBootCode(
IN PCWSTR SrcPath, // FAT12/16 bootsector source file (on the installation medium)
IN HANDLE DstPath, // Where to save the bootsector built from the source + partition information
IN HANDLE RootPartition) // Partition holding the (old) FAT12/16 information
{
NTSTATUS Status;
UNICODE_STRING Name;
IO_STATUS_BLOCK IoStatusBlock;
LARGE_INTEGER FileOffset;
BOOTCODE OrigBootSector = {0};
BOOTCODE NewBootSector = {0};
/* Allocate and read the current original partition bootsector */
Status = ReadBootCodeByHandle(&OrigBootSector,
RootPartition,
FAT_BOOTSECTOR_SIZE);
if (!NT_SUCCESS(Status))
return Status;
/* Allocate and read the new bootsector from SrcPath */
RtlInitUnicodeString(&Name, SrcPath);
Status = ReadBootCodeFromFile(&NewBootSector,
&Name,
FAT_BOOTSECTOR_SIZE);
if (!NT_SUCCESS(Status))
{
FreeBootCode(&OrigBootSector);
return Status;
}
/* Adjust the bootsector (copy a part of the FAT12/16 BPB) */
RtlCopyMemory(&((PFAT_BOOTSECTOR)NewBootSector.BootCode)->OemName,
&((PFAT_BOOTSECTOR)OrigBootSector.BootCode)->OemName,
FIELD_OFFSET(FAT_BOOTSECTOR, BootCodeAndData) -
FIELD_OFFSET(FAT_BOOTSECTOR, OemName));
/* Free the original bootsector */
FreeBootCode(&OrigBootSector);
/* Write the new bootsector to DstPath */
FileOffset.QuadPart = 0ULL;
Status = NtWriteFile(DstPath,
NULL,
NULL,
NULL,
&IoStatusBlock,
NewBootSector.BootCode,
NewBootSector.Length,
&FileOffset,
NULL);
/* Free the new bootsector */
FreeBootCode(&NewBootSector);
return Status;
}
NTSTATUS
InstallFat32BootCode(
IN PCWSTR SrcPath, // FAT32 bootsector source file (on the installation medium)
IN HANDLE DstPath, // Where to save the bootsector built from the source + partition information
IN HANDLE RootPartition) // Partition holding the (old) FAT32 information
{
NTSTATUS Status;
UNICODE_STRING Name;
IO_STATUS_BLOCK IoStatusBlock;
LARGE_INTEGER FileOffset;
USHORT BackupBootSector = 0;
BOOTCODE OrigBootSector = {0};
BOOTCODE NewBootSector = {0};
/* Allocate and read the current original partition bootsector */
Status = ReadBootCodeByHandle(&OrigBootSector,
RootPartition,
FAT32_BOOTSECTOR_SIZE);
if (!NT_SUCCESS(Status))
return Status;
/* Allocate and read the new bootsector (2 sectors) from SrcPath */
RtlInitUnicodeString(&Name, SrcPath);
Status = ReadBootCodeFromFile(&NewBootSector,
&Name,
2 * FAT32_BOOTSECTOR_SIZE);
if (!NT_SUCCESS(Status))
{
FreeBootCode(&OrigBootSector);
return Status;
}
/* Adjust the bootsector (copy a part of the FAT32 BPB) */
RtlCopyMemory(&((PFAT32_BOOTSECTOR)NewBootSector.BootCode)->OemName,
&((PFAT32_BOOTSECTOR)OrigBootSector.BootCode)->OemName,
FIELD_OFFSET(FAT32_BOOTSECTOR, BootCodeAndData) -
FIELD_OFFSET(FAT32_BOOTSECTOR, OemName));
/*
* We know we copy the boot code to a file only when DstPath != RootPartition,
* otherwise the boot code is copied to the specified root partition.
*/
if (DstPath != RootPartition)
{
/* Copy to a file: Disable the backup bootsector */
((PFAT32_BOOTSECTOR)NewBootSector.BootCode)->BackupBootSector = 0;
}
else
{
/* Copy to a disk: Get the location of the backup bootsector */
BackupBootSector = ((PFAT32_BOOTSECTOR)OrigBootSector.BootCode)->BackupBootSector;
}
/* Free the original bootsector */
FreeBootCode(&OrigBootSector);
/* Write the first sector of the new bootcode to DstPath sector 0 */
FileOffset.QuadPart = 0ULL;
Status = NtWriteFile(DstPath,
NULL,
NULL,
NULL,
&IoStatusBlock,
NewBootSector.BootCode,
FAT32_BOOTSECTOR_SIZE,
&FileOffset,
NULL);
if (!NT_SUCCESS(Status))
{
DPRINT1("NtWriteFile() failed (Status %lx)\n", Status);
FreeBootCode(&NewBootSector);
return Status;
}
if (DstPath == RootPartition)
{
/* Copy to a disk: Write the backup bootsector */
if ((BackupBootSector != 0x0000) && (BackupBootSector != 0xFFFF))
{
FileOffset.QuadPart = (ULONGLONG)((ULONG)BackupBootSector * FAT32_BOOTSECTOR_SIZE);
Status = NtWriteFile(DstPath,
NULL,
NULL,
NULL,
&IoStatusBlock,
NewBootSector.BootCode,
FAT32_BOOTSECTOR_SIZE,
&FileOffset,
NULL);
if (!NT_SUCCESS(Status))
{
DPRINT1("NtWriteFile() failed (Status %lx)\n", Status);
FreeBootCode(&NewBootSector);
return Status;
}
}
}
/* Write the second sector of the new bootcode to boot disk sector 14 */
// FileOffset.QuadPart = (ULONGLONG)(14 * FAT32_BOOTSECTOR_SIZE);
FileOffset.QuadPart = 14 * FAT32_BOOTSECTOR_SIZE;
Status = NtWriteFile(DstPath, // or really RootPartition ???
NULL,
NULL,
NULL,
&IoStatusBlock,
((PUCHAR)NewBootSector.BootCode + FAT32_BOOTSECTOR_SIZE),
FAT32_BOOTSECTOR_SIZE,
&FileOffset,
NULL);
if (!NT_SUCCESS(Status))
{
DPRINT1("NtWriteFile() failed (Status %lx)\n", Status);
}
/* Free the new bootsector */
FreeBootCode(&NewBootSector);
return Status;
}
NTSTATUS
InstallBtrfsBootCode(
IN PCWSTR SrcPath, // BTRFS bootsector source file (on the installation medium)
IN HANDLE DstPath, // Where to save the bootsector built from the source + partition information
IN HANDLE RootPartition) // Partition holding the (old) BTRFS information
{
NTSTATUS Status;
NTSTATUS LockStatus;
UNICODE_STRING Name;
IO_STATUS_BLOCK IoStatusBlock;
LARGE_INTEGER FileOffset;
PARTITION_INFORMATION_EX PartInfo;
BOOTCODE NewBootSector = {0};
/* Allocate and read the new bootsector from SrcPath */
RtlInitUnicodeString(&Name, SrcPath);
Status = ReadBootCodeFromFile(&NewBootSector,
&Name,
BTRFS_BOOTSECTOR_SIZE);
if (!NT_SUCCESS(Status))
return Status;
/*
* The BTRFS driver requires the volume to be locked in order to modify
* the first sectors of the partition, even though they are outside the
* file-system space / in the reserved area (they are situated before
* the super-block at 0x1000) and is in principle allowed by the NT
* storage stack.
* So we lock here in order to write the bootsector at sector 0.
* If locking fails, we ignore and continue nonetheless.
*/
LockStatus = NtFsControlFile(DstPath,
NULL,
NULL,
NULL,
&IoStatusBlock,
FSCTL_LOCK_VOLUME,
NULL,
0,
NULL,
0);
if (!NT_SUCCESS(LockStatus))
{
DPRINT1("WARNING: Failed to lock BTRFS volume for writing bootsector! Operations may fail! (Status 0x%lx)\n", LockStatus);
}
/* Obtain partition info and write it to the bootsector */
Status = NtDeviceIoControlFile(RootPartition,
NULL,
NULL,
NULL,
&IoStatusBlock,
IOCTL_DISK_GET_PARTITION_INFO_EX,
NULL,
0,
&PartInfo,
sizeof(PartInfo));
if (!NT_SUCCESS(Status))
{
DPRINT1("IOCTL_DISK_GET_PARTITION_INFO_EX failed (Status %lx)\n", Status);
goto Quit;
}
/* Write new bootsector to RootPath */
((PBTRFS_BOOTSECTOR)NewBootSector.BootCode)->PartitionStartLBA =
PartInfo.StartingOffset.QuadPart / SECTORSIZE;
/* Write sector 0 */
FileOffset.QuadPart = 0ULL;
Status = NtWriteFile(DstPath,
NULL,
NULL,
NULL,
&IoStatusBlock,
NewBootSector.BootCode,
NewBootSector.Length,
&FileOffset,
NULL);
if (!NT_SUCCESS(Status))
{
DPRINT1("NtWriteFile() failed (Status %lx)\n", Status);
goto Quit;
}
Quit:
/* Unlock the volume */
LockStatus = NtFsControlFile(DstPath,
NULL,
NULL,
NULL,
&IoStatusBlock,
FSCTL_UNLOCK_VOLUME,
NULL,
0,
NULL,
0);
if (!NT_SUCCESS(LockStatus))
{
DPRINT1("Failed to unlock BTRFS volume (Status 0x%lx)\n", LockStatus);
}
/* Free the new bootsector */
FreeBootCode(&NewBootSector);
return Status;
}
NTSTATUS
InstallNtfsBootCode(
IN PCWSTR SrcPath, // NTFS bootsector source file (on the installation medium)
IN HANDLE DstPath, // Where to save the bootsector built from the source + partition information
IN HANDLE RootPartition) // Partition holding the (old) NTFS information
{
NTSTATUS Status;
UNICODE_STRING Name;
IO_STATUS_BLOCK IoStatusBlock;
LARGE_INTEGER FileOffset;
BOOTCODE OrigBootSector = {0};
BOOTCODE NewBootSector = {0};
/* Allocate and read the current original partition bootsector */
Status = ReadBootCodeByHandle(&OrigBootSector, RootPartition, NTFS_BOOTSECTOR_SIZE);
if (!NT_SUCCESS(Status))
{
DPRINT1("InstallNtfsBootCode: Status %lx\n", Status);
return Status;
}
/* Allocate and read the new bootsector (16 sectors) from SrcPath */
RtlInitUnicodeString(&Name, SrcPath);
Status = ReadBootCodeFromFile(&NewBootSector, &Name, NTFS_BOOTSECTOR_SIZE);
if (!NT_SUCCESS(Status))
{
DPRINT1("InstallNtfsBootCode: Status %lx\n", Status);
FreeBootCode(&OrigBootSector);
return Status;
}
/* Adjust the bootsector (copy a part of the NTFS BPB) */
RtlCopyMemory(&((PNTFS_BOOTSECTOR)NewBootSector.BootCode)->OEMID,
&((PNTFS_BOOTSECTOR)OrigBootSector.BootCode)->OEMID,
FIELD_OFFSET(NTFS_BOOTSECTOR, BootStrap) - FIELD_OFFSET(NTFS_BOOTSECTOR, OEMID));
/* Write sector 0 */
FileOffset.QuadPart = 0ULL;
Status = NtWriteFile(DstPath,
NULL,
NULL,
NULL,
&IoStatusBlock,
NewBootSector.BootCode,
NewBootSector.Length,
&FileOffset,
NULL);
if (!NT_SUCCESS(Status))
{
DPRINT1("NtWriteFile() failed (Status %lx)\n", Status);
goto Quit;
}
Quit:
/* Free the new bootsector */
FreeBootCode(&NewBootSector);
return Status;
}
//
// Formatting routines
//
NTSTATUS
NTAPI
ChkdskVolume(
_In_ PVOLINFO Volume,
_In_ BOOLEAN FixErrors,
_In_ BOOLEAN Verbose,
_In_ BOOLEAN CheckOnlyIfDirty,
_In_ BOOLEAN ScanDrive,
_In_opt_ PFMIFSCALLBACK Callback)
{
/* Do not check a volume with an unknown file system */
if (!*Volume->FileSystem)
return STATUS_UNRECOGNIZED_VOLUME;
/* Check the volume */
DPRINT("Volume->DeviceName: %S\n", Volume->DeviceName);
return ChkdskFileSystem(Volume->DeviceName,
Volume->FileSystem,
FixErrors,
Verbose,
CheckOnlyIfDirty,
ScanDrive,
Callback);
}
NTSTATUS
NTAPI
ChkdskPartition(
_In_ PPARTENTRY PartEntry,
_In_ BOOLEAN FixErrors,
_In_ BOOLEAN Verbose,
_In_ BOOLEAN CheckOnlyIfDirty,
_In_ BOOLEAN ScanDrive,
_In_opt_ PFMIFSCALLBACK Callback)
{
ASSERT(PartEntry->IsPartitioned && PartEntry->PartitionNumber != 0);
ASSERT(PartEntry->Volume);
// if (!PartEntry->Volume) { check_raw_sectors(); } else { check_FS(); }
/* Check the associated volume */
return ChkdskVolume(&PartEntry->Volume->Info,
FixErrors,
Verbose,
CheckOnlyIfDirty,
ScanDrive,
Callback);
}
NTSTATUS
NTAPI
FormatVolume(
_In_ PVOLINFO Volume,
_In_ PCWSTR FileSystemName,
_In_ FMIFS_MEDIA_FLAG MediaFlag,
_In_opt_ PCWSTR Label,
_In_ BOOLEAN QuickFormat,
_In_ ULONG ClusterSize,
_In_opt_ PFMIFSCALLBACK Callback)
{
NTSTATUS Status;
if (!FileSystemName || !*FileSystemName)
{
DPRINT1("No file system specified\n");
return STATUS_UNRECOGNIZED_VOLUME;
}
/* Format the volume */
DPRINT("Volume->DeviceName: %S\n", Volume->DeviceName);
Status = FormatFileSystem(Volume->DeviceName,
FileSystemName,
MediaFlag,
Label,
QuickFormat,
ClusterSize,
Callback);
if (!NT_SUCCESS(Status))
return Status;
/* Set the new volume's file system and label */
RtlStringCbCopyW(Volume->FileSystem, sizeof(Volume->FileSystem), FileSystemName);
if (!Label) Label = L"";
RtlStringCbCopyW(Volume->VolumeLabel, sizeof(Volume->VolumeLabel), Label);
return STATUS_SUCCESS;
}
NTSTATUS
NTAPI
FormatPartition(
_In_ PPARTENTRY PartEntry,
_In_ PCWSTR FileSystemName,
_In_ FMIFS_MEDIA_FLAG MediaFlag,
_In_opt_ PCWSTR Label,
_In_ BOOLEAN QuickFormat,
_In_ ULONG ClusterSize,
_In_opt_ PFMIFSCALLBACK Callback)
{
NTSTATUS Status;
PDISKENTRY DiskEntry = PartEntry->DiskEntry;
UCHAR PartitionType;
ASSERT(PartEntry->IsPartitioned && PartEntry->PartitionNumber != 0);
if (!FileSystemName || !*FileSystemName)
{
DPRINT1("No file system specified\n");
return STATUS_UNRECOGNIZED_VOLUME;
}
/*
* Prepare the partition for formatting (for MBR disks, reset the
* partition type), and adjust the file system name in case of FAT
* vs. FAT32, depending on the geometry of the partition.
*/
// FIXME: Do this only if QuickFormat == FALSE? What about FAT handling?
/*
* Retrieve a partition type as a hint only. It will be used to determine
* whether to actually use FAT12/16 or FAT32 file system, depending on the
* geometry of the partition. If the partition resides on an MBR disk,
* the partition style will be reset to this value as well, unless the
* partition is OEM.
*/
PartitionType = FileSystemToMBRPartitionType(FileSystemName,
PartEntry->StartSector.QuadPart,
PartEntry->SectorCount.QuadPart);
if (PartitionType == PARTITION_ENTRY_UNUSED)
{
/* Unknown file system */
DPRINT1("Unknown file system '%S'\n", FileSystemName);
return STATUS_UNRECOGNIZED_VOLUME;
}
/* Reset the MBR partition type, unless this is an OEM partition */
if (DiskEntry->DiskStyle == PARTITION_STYLE_MBR)
{
if (!IsOEMPartition(PartEntry->PartitionType))
SetMBRPartitionType(PartEntry, PartitionType);
}
/*
* Adjust the file system name in case of FAT vs. FAT32, according to
* the type of partition returned by FileSystemToMBRPartitionType().
*/
if (_wcsicmp(FileSystemName, L"FAT") == 0)
{
if ((PartitionType == PARTITION_FAT32) ||
(PartitionType == PARTITION_FAT32_XINT13))
{
FileSystemName = L"FAT32";
}
}
/* Commit the partition changes to the disk */
Status = WritePartitions(DiskEntry);
if (!NT_SUCCESS(Status))
{
DPRINT1("WritePartitions(disk %lu) failed, Status 0x%08lx\n",
DiskEntry->DiskNumber, Status);
return STATUS_PARTITION_FAILURE;
}
/* We must have an associated volume now */
ASSERT(PartEntry->Volume);
/* Format the associated volume */
Status = FormatVolume(&PartEntry->Volume->Info,
FileSystemName,
MediaFlag,
Label,
QuickFormat,
ClusterSize,
Callback);
if (!NT_SUCCESS(Status))
return Status;
PartEntry->Volume->FormatState = Formatted;
PartEntry->Volume->New = FALSE;
return STATUS_SUCCESS;
}
//
// FileSystem Volume Operations Queue
//
static FSVOL_OP
DoFormatting(
_In_ PVOLENTRY Volume,
_In_opt_ PVOID Context,
_In_opt_ PFSVOL_CALLBACK FsVolCallback)
{
FSVOL_OP Result;
NTSTATUS Status = STATUS_SUCCESS;
PPARTENTRY PartEntry;
FORMAT_VOLUME_INFO FmtInfo = {0};
PartEntry = Volume->PartEntry;
ASSERT(PartEntry && (PartEntry->Volume == Volume));
FmtInfo.Volume = Volume;
RetryFormat:
Result = FsVolCallback(Context,
FSVOLNOTIFY_STARTFORMAT,
(ULONG_PTR)&FmtInfo,
FSVOL_FORMAT);
if (Result != FSVOL_DOIT)
goto EndFormat;
ASSERT(FmtInfo.FileSystemName && *FmtInfo.FileSystemName);
/* Format the partition */
Status = FormatPartition(PartEntry,
FmtInfo.FileSystemName,
FmtInfo.MediaFlag,
FmtInfo.Label,
FmtInfo.QuickFormat,
FmtInfo.ClusterSize,
FmtInfo.Callback);
if (!NT_SUCCESS(Status))
{
// FmtInfo.NtPathPartition = PathBuffer;
FmtInfo.ErrorStatus = Status;
Result = FsVolCallback(Context,
FSVOLNOTIFY_FORMATERROR,
(ULONG_PTR)&FmtInfo,
0);
if (Result == FSVOL_RETRY)
goto RetryFormat;
// else if (Result == FSVOL_ABORT || Result == FSVOL_SKIP), stop.
}
EndFormat:
/* This notification is always sent, even in case of error or abort */
FmtInfo.ErrorStatus = Status;
FsVolCallback(Context,
FSVOLNOTIFY_ENDFORMAT,
(ULONG_PTR)&FmtInfo,
0);
return Result;
}
static FSVOL_OP
DoChecking(
_In_ PVOLENTRY Volume,
_In_opt_ PVOID Context,
_In_opt_ PFSVOL_CALLBACK FsVolCallback)
{
FSVOL_OP Result;
NTSTATUS Status = STATUS_SUCCESS;
CHECK_VOLUME_INFO ChkInfo = {0};
ASSERT(*Volume->Info.FileSystem);
ChkInfo.Volume = Volume;
RetryCheck:
Result = FsVolCallback(Context,
FSVOLNOTIFY_STARTCHECK,
(ULONG_PTR)&ChkInfo,
FSVOL_CHECK);
if (Result != FSVOL_DOIT)
goto EndCheck;
/* Check the volume */
Status = ChkdskVolume(&Volume->Info,
ChkInfo.FixErrors,
ChkInfo.Verbose,
ChkInfo.CheckOnlyIfDirty,
ChkInfo.ScanDrive,
ChkInfo.Callback);
/* If volume checking succeeded, or if it is not supported
* with the current file system, disable checks on the volume */
if (NT_SUCCESS(Status) || (Status == STATUS_NOT_SUPPORTED))
Volume->NeedsCheck = FALSE;
if (!NT_SUCCESS(Status))
{
// ChkInfo.NtPathPartition = PathBuffer;
ChkInfo.ErrorStatus = Status;
Result = FsVolCallback(Context,
FSVOLNOTIFY_CHECKERROR,
(ULONG_PTR)&ChkInfo,
0);
if (Result == FSVOL_RETRY)
goto RetryCheck;
// else if (Result == FSVOL_ABORT || Result == FSVOL_SKIP), stop.
// Volume->NeedsCheck = FALSE;
}
EndCheck:
/* This notification is always sent, even in case of error or abort */
ChkInfo.ErrorStatus = Status;
FsVolCallback(Context,
FSVOLNOTIFY_ENDCHECK,
(ULONG_PTR)&ChkInfo,
0);
return Result;
}
static
PVOLENTRY
GetNextUnformattedVolume(
_In_ PPARTLIST List,
_In_opt_ PVOLENTRY Volume)
{
PLIST_ENTRY Entry;
for (;;)
{
/* If we have a current volume, get the next one, otherwise get the first */
Entry = (Volume ? &Volume->ListEntry : &List->VolumesList);
Entry = Entry->Flink;
if (Entry == &List->VolumesList)
return NULL;
Volume = CONTAINING_RECORD(Entry, VOLENTRY, ListEntry);
if (Volume->New && (Volume->FormatState == Unformatted))
{
/* Found a candidate, return it */
return Volume;
}
}
}
BOOLEAN
NTAPI
FsVolCommitOpsQueue(
_In_ PPARTLIST PartitionList,
_In_ PVOLENTRY SystemVolume,
_In_ PVOLENTRY InstallVolume,
_In_opt_ PFSVOL_CALLBACK FsVolCallback,
_In_opt_ PVOID Context)
{
BOOLEAN Success = TRUE; // Suppose success originally.
FSVOL_OP Result;
PLIST_ENTRY Entry;
PVOLENTRY Volume;
/* Machine state for the format step */
typedef enum _FORMATMACHINESTATE
{
Start,
FormatSystemVolume,
FormatInstallVolume,
FormatOtherVolume,
FormatDone
} FORMATMACHINESTATE;
FORMATMACHINESTATE FormatState, OldFormatState;
static const PCSTR FormatStateNames[] = {
"Start",
"FormatSystemVolume",
"FormatInstallVolume",
"FormatOtherVolume",
"FormatDone"
};
ASSERT(PartitionList && SystemVolume && InstallVolume);
/* Commit all partition changes to all the disks */
if (!WritePartitionsToDisk(PartitionList))
{
DPRINT("WritePartitionsToDisk() failed\n");
/* Result = */ FsVolCallback(Context,
FSVOLNOTIFY_PARTITIONERROR,
STATUS_PARTITION_FAILURE, // FIXME
0);
return FALSE;
}
//
// FIXME: Should we do the following here, or in the caller?
//
/*
* In all cases, whether or not we are going to perform a formatting,
* we must perform a file system check of both the system and the
* installation volumes.
*/
SystemVolume->NeedsCheck = TRUE;
InstallVolume->NeedsCheck = TRUE;
Result = FsVolCallback(Context,
FSVOLNOTIFY_STARTQUEUE,
0, 0);
if (Result == FSVOL_ABORT)
return FALSE;
/*
* Commit the Format queue
*/
Result = FsVolCallback(Context,
FSVOLNOTIFY_STARTSUBQUEUE,
FSVOL_FORMAT,
0);
if (Result == FSVOL_ABORT)
return FALSE;
/** HACK!! **/
if (Result == FSVOL_SKIP)
goto StartCheckQueue;
/** END HACK!! **/
/* Reset the formatter machine state */
FormatState = Start;
Volume = NULL;
NextFormat:
OldFormatState = FormatState;
switch (FormatState)
{
case Start:
{
/*
* We start by formatting the system volume in case it is new
* (it didn't exist before) and is not the same as the installation
* volume. Otherwise we just require a file system check on it,
* and start by formatting the installation volume instead.
*/
if (SystemVolume != InstallVolume)
{
Volume = SystemVolume;
if (Volume->FormatState == Unformatted)
{
// TODO: Should we let the user use a custom file system,
// or should we always use FAT(32) for it?
// For "compatibility", FAT(32) would be best indeed.
FormatState = FormatSystemVolume;
DPRINT1("FormatState: %s --> %s\n",
FormatStateNames[OldFormatState], FormatStateNames[FormatState]);
break;
}
/* The system volume is separate, so it had better be formatted! */
ASSERT(Volume->FormatState == Formatted);
/* Require a file system check on the system volume too */
Volume->NeedsCheck = TRUE;
}
__fallthrough;
}
case FormatSystemVolume:
{
Volume = InstallVolume;
FormatState = FormatInstallVolume;
DPRINT1("FormatState: %s --> %s\n",
FormatStateNames[OldFormatState], FormatStateNames[FormatState]);
break;
}
case FormatInstallVolume:
/* Restart volume enumeration */
Volume = NULL;
case FormatOtherVolume:
{
Volume = GetNextUnformattedVolume(PartitionList, Volume);
FormatState = (Volume ? FormatOtherVolume : FormatDone);
DPRINT1("FormatState: %s --> %s\n",
FormatStateNames[OldFormatState], FormatStateNames[FormatState]);
if (Volume)
break;
__fallthrough;
}
case FormatDone:
{
DPRINT1("FormatState: FormatDone\n");
Success = TRUE;
goto EndFormat;
}
DEFAULT_UNREACHABLE;
}
Result = DoFormatting(Volume, Context, FsVolCallback);
if (Result == FSVOL_ABORT)
{
Success = FALSE;
goto Quit;
}
/* Schedule a check for this volume */
Volume->NeedsCheck = TRUE;
/* Go to the next volume to be formatted */
goto NextFormat;
EndFormat:
FsVolCallback(Context,
FSVOLNOTIFY_ENDSUBQUEUE,
FSVOL_FORMAT,
0);
/*
* Commit the CheckFS queue
*/
StartCheckQueue:
Result = FsVolCallback(Context,
FSVOLNOTIFY_STARTSUBQUEUE,
FSVOL_CHECK,
0);
if (Result == FSVOL_ABORT)
return FALSE;
/* Loop through each unchecked volume and do the check */
for (Entry = PartitionList->VolumesList.Flink;
Entry != &PartitionList->VolumesList;
Entry = Entry->Flink)
{
Volume = CONTAINING_RECORD(Entry, VOLENTRY, ListEntry);
if (!Volume->NeedsCheck)
continue;
/* Found a candidate */
ASSERT(Volume->FormatState == Formatted);
Result = DoChecking(Volume, Context, FsVolCallback);
if (Result == FSVOL_ABORT)
{
Success = FALSE;
goto Quit;
}
/* Go to the next volume to be checked */
}
Success = TRUE;
FsVolCallback(Context,
FSVOLNOTIFY_ENDSUBQUEUE,
FSVOL_CHECK,
0);
Quit:
/* All the queues have been committed */
FsVolCallback(Context,
FSVOLNOTIFY_ENDQUEUE,
Success,
0);
return Success;
}
/* EOF */
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