fsutil.c File Reference

#include "precomp.h"
#include "partlist.h"
#include "fsrec.h"
#include "bootcode.h"
#include "fsutil.h"
#include <fslib/vfatlib.h>
#include <fslib/btrfslib.h>
#include <debug.h>
#include <pshpack1.h>
#include <poppack.h>

Include dependency graph for fsutil.c:

Go to the source code of this file.

Classes
struct	_FAT_BOOTSECTOR
struct	_FAT32_BOOTSECTOR
struct	_BTRFS_BOOTSECTOR
struct	_NTFS_BOOTSECTOR
struct	_FILE_SYSTEM

Macros
#define	NDEBUG

Typedefs
typedef struct _FAT_BOOTSECTOR	FAT_BOOTSECTOR
typedef struct _FAT_BOOTSECTOR *	PFAT_BOOTSECTOR
typedef struct _FAT32_BOOTSECTOR	FAT32_BOOTSECTOR
typedef struct _FAT32_BOOTSECTOR *	PFAT32_BOOTSECTOR
typedef struct _BTRFS_BOOTSECTOR	BTRFS_BOOTSECTOR
typedef struct _BTRFS_BOOTSECTOR *	PBTRFS_BOOTSECTOR
typedef struct _NTFS_BOOTSECTOR	NTFS_BOOTSECTOR
typedef struct _NTFS_BOOTSECTOR *	PNTFS_BOOTSECTOR
typedef struct _FILE_SYSTEM	FILE_SYSTEM
typedef struct _FILE_SYSTEM *	PFILE_SYSTEM

Functions
	C_ASSERT (sizeof(FAT_BOOTSECTOR)==FAT_BOOTSECTOR_SIZE)
	C_ASSERT (sizeof(FAT32_BOOTSECTOR)==FAT32_BOOTSECTOR_SIZE)
	C_ASSERT (sizeof(BTRFS_BOOTSECTOR)==BTRFS_BOOTSECTOR_SIZE)
	C_ASSERT (sizeof(NTFS_BOOTSECTOR)==NTFS_BOOTSECTOR_SIZE)
BOOLEAN	GetRegisteredFileSystems (IN ULONG Index, OUT PCWSTR *FileSystemName)
static PFILE_SYSTEM	GetFileSystemByName (IN PCWSTR FileSystemName)
NTSTATUS	ChkdskFileSystem_UStr (IN PUNICODE_STRING DriveRoot, IN PCWSTR FileSystemName, IN BOOLEAN FixErrors, IN BOOLEAN Verbose, IN BOOLEAN CheckOnlyIfDirty, IN BOOLEAN ScanDrive, IN PFMIFSCALLBACK Callback)
NTSTATUS	ChkdskFileSystem (IN PCWSTR DriveRoot, IN PCWSTR FileSystemName, IN BOOLEAN FixErrors, IN BOOLEAN Verbose, IN BOOLEAN CheckOnlyIfDirty, IN BOOLEAN ScanDrive, IN PFMIFSCALLBACK Callback)
NTSTATUS	FormatFileSystem_UStr (IN PUNICODE_STRING DriveRoot, IN PCWSTR FileSystemName, IN FMIFS_MEDIA_FLAG MediaFlag, IN PUNICODE_STRING Label, IN BOOLEAN QuickFormat, IN ULONG ClusterSize, IN PFMIFSCALLBACK Callback)
NTSTATUS	FormatFileSystem (IN PCWSTR DriveRoot, IN PCWSTR FileSystemName, IN FMIFS_MEDIA_FLAG MediaFlag, IN PCWSTR Label, IN BOOLEAN QuickFormat, IN ULONG ClusterSize, IN PFMIFSCALLBACK Callback)
NTSTATUS	InstallFatBootCode (IN PCWSTR SrcPath, IN HANDLE DstPath, IN HANDLE RootPartition)
NTSTATUS	InstallFat32BootCode (IN PCWSTR SrcPath, IN HANDLE DstPath, IN HANDLE RootPartition)
NTSTATUS	InstallBtrfsBootCode (IN PCWSTR SrcPath, IN HANDLE DstPath, IN HANDLE RootPartition)
NTSTATUS	InstallNtfsBootCode (IN PCWSTR SrcPath, IN HANDLE DstPath, IN HANDLE RootPartition)
NTSTATUS	ChkdskPartition (IN PPARTENTRY PartEntry, IN BOOLEAN FixErrors, IN BOOLEAN Verbose, IN BOOLEAN CheckOnlyIfDirty, IN BOOLEAN ScanDrive, IN PFMIFSCALLBACK Callback)
NTSTATUS	FormatPartition (IN PPARTENTRY PartEntry, IN PCWSTR FileSystemName, IN FMIFS_MEDIA_FLAG MediaFlag, IN PCWSTR Label, IN BOOLEAN QuickFormat, IN ULONG ClusterSize, IN PFMIFSCALLBACK Callback)

Variables
static FILE_SYSTEM	RegisteredFileSystems []

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 29 of file fsutil.c.

Typedef Documentation

BTRFS_BOOTSECTOR

typedef struct _BTRFS_BOOTSECTOR BTRFS_BOOTSECTOR

FAT32_BOOTSECTOR

typedef struct _FAT32_BOOTSECTOR FAT32_BOOTSECTOR

FAT_BOOTSECTOR

typedef struct _FAT_BOOTSECTOR FAT_BOOTSECTOR

FILE_SYSTEM

typedef struct _FILE_SYSTEM FILE_SYSTEM

IFS_PROVIDER

NTFS_BOOTSECTOR

typedef struct _NTFS_BOOTSECTOR NTFS_BOOTSECTOR

PBTRFS_BOOTSECTOR

typedef struct _BTRFS_BOOTSECTOR * PBTRFS_BOOTSECTOR

PFAT32_BOOTSECTOR

typedef struct _FAT32_BOOTSECTOR * PFAT32_BOOTSECTOR

PFAT_BOOTSECTOR

typedef struct _FAT_BOOTSECTOR * PFAT_BOOTSECTOR

PFILE_SYSTEM

typedef struct _FILE_SYSTEM * PFILE_SYSTEM

PNTFS_BOOTSECTOR

typedef struct _NTFS_BOOTSECTOR * PNTFS_BOOTSECTOR

Function Documentation

C_ASSERT() [1/4]

C_ASSERT

(

sizeof(BTRFS_BOOTSECTOR)

= =BTRFS_BOOTSECTOR_SIZE

)

C_ASSERT() [2/4]

C_ASSERT

(

sizeof(FAT32_BOOTSECTOR)

= =FAT32_BOOTSECTOR_SIZE

)

C_ASSERT() [3/4]

C_ASSERT

(

sizeof(FAT_BOOTSECTOR)

= =FAT_BOOTSECTOR_SIZE

)

C_ASSERT() [4/4]

C_ASSERT

(

sizeof(NTFS_BOOTSECTOR)

= =NTFS_BOOTSECTOR_SIZE

)

ChkdskFileSystem()

NTSTATUS ChkdskFileSystem	(	IN PCWSTR	DriveRoot,
		IN PCWSTR	FileSystemName,
		IN BOOLEAN	FixErrors,
		IN BOOLEAN	Verbose,
		IN BOOLEAN	CheckOnlyIfDirty,
		IN BOOLEAN	ScanDrive,
		IN PFMIFSCALLBACK	Callback
	)

Definition at line 287 of file fsutil.c.

{
    UNICODE_STRING DriveRootU;
 
    RtlInitUnicodeString(&DriveRootU, DriveRoot);
    return ChkdskFileSystem_UStr(&DriveRootU,
                                 FileSystemName,
                                 FixErrors,
                                 Verbose,
                                 CheckOnlyIfDirty,
                                 ScanDrive,
                                 Callback);
}

Referenced by ChkdskPartition().

ChkdskFileSystem_UStr()

NTSTATUS ChkdskFileSystem_UStr	(	IN PUNICODE_STRING	DriveRoot,
		IN PCWSTR	FileSystemName,
		IN BOOLEAN	FixErrors,
		IN BOOLEAN	Verbose,
		IN BOOLEAN	CheckOnlyIfDirty,
		IN BOOLEAN	ScanDrive,
		IN PFMIFSCALLBACK	Callback
	)

ChkdskEx()

Definition at line 244 of file fsutil.c.

{
    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;
}

Referenced by ChkdskFileSystem().

ChkdskPartition()

NTSTATUS ChkdskPartition	(	IN PPARTENTRY	PartEntry,
		IN BOOLEAN	FixErrors,
		IN BOOLEAN	Verbose,
		IN BOOLEAN	CheckOnlyIfDirty,
		IN BOOLEAN	ScanDrive,
		IN PFMIFSCALLBACK	Callback
	)

Definition at line 757 of file fsutil.c.

{
    NTSTATUS Status;
    PDISKENTRY DiskEntry = PartEntry->DiskEntry;
    // UNICODE_STRING PartitionRootPath;
    WCHAR PartitionRootPath[MAX_PATH]; // PathBuffer
 
    ASSERT(PartEntry->IsPartitioned && PartEntry->PartitionNumber != 0);
 
    /* HACK: Do not try to check a partition with an unknown filesystem */
    if (!*PartEntry->FileSystem)
    {
        PartEntry->NeedsCheck = FALSE;
        return STATUS_SUCCESS;
    }
 
    /* Set PartitionRootPath */
    RtlStringCchPrintfW(PartitionRootPath, ARRAYSIZE(PartitionRootPath),
                        L"\\Device\\Harddisk%lu\\Partition%lu",
                        DiskEntry->DiskNumber,
                        PartEntry->PartitionNumber);
    DPRINT("PartitionRootPath: %S\n", PartitionRootPath);
 
    /* Check the partition */
    Status = ChkdskFileSystem(PartitionRootPath,
                              PartEntry->FileSystem,
                              FixErrors,
                              Verbose,
                              CheckOnlyIfDirty,
                              ScanDrive,
                              Callback);
    if (!NT_SUCCESS(Status))
        return Status;
 
    PartEntry->NeedsCheck = FALSE;
    return STATUS_SUCCESS;
}

Referenced by DoChkdsk().

FormatFileSystem()

NTSTATUS FormatFileSystem	(	IN PCWSTR	DriveRoot,
		IN PCWSTR	FileSystemName,
		IN FMIFS_MEDIA_FLAG	MediaFlag,
		IN PCWSTR	Label,
		IN BOOLEAN	QuickFormat,
		IN ULONG	ClusterSize,
		IN PFMIFSCALLBACK	Callback
	)

Definition at line 376 of file fsutil.c.

{
    UNICODE_STRING DriveRootU;
    UNICODE_STRING LabelU;
 
    RtlInitUnicodeString(&DriveRootU, DriveRoot);
    RtlInitUnicodeString(&LabelU, Label);
 
    return FormatFileSystem_UStr(&DriveRootU,
                                 FileSystemName,
                                 MediaFlag,
                                 &LabelU,
                                 QuickFormat,
                                 ClusterSize,
                                 Callback);
}

Referenced by FormatPartition(), and InstallFatBootcodeToFloppy().

FormatFileSystem_UStr()

NTSTATUS FormatFileSystem_UStr	(	IN PUNICODE_STRING	DriveRoot,
		IN PCWSTR	FileSystemName,
		IN FMIFS_MEDIA_FLAG	MediaFlag,
		IN PUNICODE_STRING	Label,
		IN BOOLEAN	QuickFormat,
		IN ULONG	ClusterSize,
		IN PFMIFSCALLBACK	Callback
	)

FormatEx()

Definition at line 311 of file fsutil.c.

{
    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);
}

Referenced by FormatFileSystem().

FormatPartition()

NTSTATUS FormatPartition	(	IN PPARTENTRY	PartEntry,
		IN PCWSTR	FileSystemName,
		IN FMIFS_MEDIA_FLAG	MediaFlag,
		IN PCWSTR	Label,
		IN BOOLEAN	QuickFormat,
		IN ULONG	ClusterSize,
		IN PFMIFSCALLBACK	Callback
	)

Definition at line 802 of file fsutil.c.

{
    NTSTATUS Status;
    PDISKENTRY DiskEntry = PartEntry->DiskEntry;
    UCHAR PartitionType;
    // UNICODE_STRING PartitionRootPath;
    WCHAR PartitionRootPath[MAX_PATH]; // PathBuffer
 
    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 filesystem 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 filesystem, 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 filesystem 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;
    }
 
    /* Set PartitionRootPath */
    RtlStringCchPrintfW(PartitionRootPath, ARRAYSIZE(PartitionRootPath),
                        L"\\Device\\Harddisk%lu\\Partition%lu",
                        DiskEntry->DiskNumber,
                        PartEntry->PartitionNumber);
    DPRINT("PartitionRootPath: %S\n", PartitionRootPath);
 
    /* Format the partition */
    Status = FormatFileSystem(PartitionRootPath,
                              FileSystemName,
                              MediaFlag,
                              Label,
                              QuickFormat,
                              ClusterSize,
                              Callback);
    if (!NT_SUCCESS(Status))
        return Status;
 
//
// TODO: Here, call a partlist.c function that update the actual
// FS name and the label fields of the volume.
//
    PartEntry->FormatState = Formatted;
 
    /* Set the new partition's file system proper */
    RtlStringCbCopyW(PartEntry->FileSystem,
                     sizeof(PartEntry->FileSystem),
                     FileSystemName);
 
    PartEntry->New = FALSE;
 
    return STATUS_SUCCESS;
}

Referenced by DoFormat().

GetFileSystemByName()

static PFILE_SYSTEM GetFileSystemByName ( IN PCWSTR  FileSystemName )

static

GetProvider()

Definition at line 197 of file fsutil.c.

{
#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;
}

Referenced by ChkdskFileSystem_UStr(), and FormatFileSystem_UStr().

GetRegisteredFileSystems()

BOOLEAN GetRegisteredFileSystems	(	IN ULONG	Index,
		OUT PCWSTR *	FileSystemName
	)

QueryAvailableFileSystemFormat()

Definition at line 182 of file fsutil.c.

{
    if (Index >= ARRAYSIZE(RegisteredFileSystems))
        return FALSE;
 
    *FileSystemName = RegisteredFileSystems[Index].FileSystemName;
 
    return TRUE;
}

Referenced by InitializeFileSystemList().

InstallBtrfsBootCode()

NTSTATUS InstallBtrfsBootCode	(	IN PCWSTR	SrcPath,
		IN HANDLE	DstPath,
		IN HANDLE	RootPartition
	)

Definition at line 585 of file fsutil.c.

{
    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;
}

Referenced by InstallBtrfsBootcodeToPartition().

InstallFat32BootCode()

NTSTATUS InstallFat32BootCode	(	IN PCWSTR	SrcPath,
		IN HANDLE	DstPath,
		IN HANDLE	RootPartition
	)

Definition at line 464 of file fsutil.c.

{
    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;
}

Referenced by InstallFatBootcodeToPartition().

InstallFatBootCode()

NTSTATUS InstallFatBootCode	(	IN PCWSTR	SrcPath,
		IN HANDLE	DstPath,
		IN HANDLE	RootPartition
	)

Definition at line 406 of file fsutil.c.

{
    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;
}

InstallNtfsBootCode()

NTSTATUS InstallNtfsBootCode	(	IN PCWSTR	SrcPath,
		IN HANDLE	DstPath,
		IN HANDLE	RootPartition
	)

Definition at line 692 of file fsutil.c.

{
    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;
}

Referenced by InstallNtfsBootcodeToPartition().

Variable Documentation

RegisteredFileSystems

FILE_SYSTEM RegisteredFileSystems[]

static

Initial value:

=
{
    
    { L"FAT"  , VfatFormat, VfatChkdsk },
    { L"FAT32", VfatFormat, VfatChkdsk },
 
 
 
 
    { L"BTRFS", BtrfsFormat, BtrfsChkdsk },
 
 
 
 
 
}

Definition at line 159 of file fsutil.c.

Referenced by BlImgStartBootApplication(), GetFileSystemByName(), and GetRegisteredFileSystems().