ntfsinfo.c File Reference

#include <windows.h>
#include <tchar.h>
#include <stdio.h>

Include dependency graph for ntfsinfo.c:

Go to the source code of this file.

Classes
struct	NTFS_RECORD_HEADER
struct	_FILE_RECORD_HEADER
struct	NTFS_ATTR_RECORD

Macros
#define	NRH_FILE_TYPE   0x454C4946
#define	ATTRIBUTE_TYPE_DATA   0x80
#define	ATTRIBUTE_TYPE_END   0xFFFFFFFF

Typedefs
typedef struct NTFS_RECORD_HEADER *	PNTFS_RECORD_HEADER
typedef struct _FILE_RECORD_HEADER	FILE_RECORD_HEADER
typedef struct _FILE_RECORD_HEADER *	PFILE_RECORD_HEADER
typedef struct NTFS_ATTR_RECORD *	PNTFS_ATTR_RECORD

Functions
int __cdecl	_tmain (int argc, const TCHAR *argv[])

Variables
static TCHAR *	MetaDataFiles []

Macro Definition Documentation

ATTRIBUTE_TYPE_DATA

#define ATTRIBUTE_TYPE_DATA   0x80

Definition at line 22 of file ntfsinfo.c.

ATTRIBUTE_TYPE_END

#define ATTRIBUTE_TYPE_END   0xFFFFFFFF

Definition at line 23 of file ntfsinfo.c.

NRH_FILE_TYPE

#define NRH_FILE_TYPE   0x454C4946

Definition at line 21 of file ntfsinfo.c.

Typedef Documentation

FILE_RECORD_HEADER

typedef struct _FILE_RECORD_HEADER FILE_RECORD_HEADER

PFILE_RECORD_HEADER

typedef struct _FILE_RECORD_HEADER * PFILE_RECORD_HEADER

PNTFS_ATTR_RECORD

typedef struct NTFS_ATTR_RECORD * PNTFS_ATTR_RECORD

PNTFS_RECORD_HEADER

typedef struct NTFS_RECORD_HEADER * PNTFS_RECORD_HEADER

Function Documentation

_tmain()

int __cdecl _tmain	(	int	argc,
		const TCHAR *	argv[]
	)

Definition at line 89 of file ntfsinfo.c.

{
    TCHAR VolumeName[] = _T("\\\\.\\C:");
    HANDLE VolumeHandle;
    NTFS_VOLUME_DATA_BUFFER VolumeInfo;
    DWORD LengthReturned;
    ULONGLONG VolumeSize;
    ULONGLONG MftClusters;
    UINT File = 0;
    PNTFS_FILE_RECORD_OUTPUT_BUFFER OutputBuffer;
 
    if (argc > 1)
    {
        TCHAR Letter = argv[1][0];
 
        if ((Letter >= 'A' && Letter <= 'Z') ||
            (Letter >= 'a' && Letter <= 'z'))
        {
            VolumeName[4] = Letter;
        }
    }
 
    VolumeHandle = CreateFile(VolumeName, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, 0 );
    if (VolumeHandle == INVALID_HANDLE_VALUE)
    {
        _ftprintf(stderr, _T("Failed opening the volume '%s' (%lx)\n"), VolumeName, GetLastError());
        return 1;
    }
 
    if (!DeviceIoControl(VolumeHandle, FSCTL_GET_NTFS_VOLUME_DATA, NULL, 0, &VolumeInfo, sizeof(VolumeInfo), &LengthReturned, NULL))
    {
        _ftprintf(stderr, _T("Failed requesting volume '%s' data (%lx)\n"), VolumeName, GetLastError());
        CloseHandle(VolumeHandle);
        return 1;
    }
 
    if (LengthReturned < sizeof(VolumeInfo))
    {
        _ftprintf(stderr, _T("Failed reading volume '%s' data (%lx)\n"), VolumeName, GetLastError());
        CloseHandle(VolumeHandle);
        return 1;
    }
 
    _tprintf(_T("Volume Size\n-----------\n"));
    VolumeSize = VolumeInfo.TotalClusters.QuadPart * VolumeInfo.BytesPerCluster;
    _tprintf(_T("Volume size\t\t: %I64u MB\n"), VolumeSize >> 20);
    _tprintf(_T("Total sectors\t\t: %I64u\n"), VolumeInfo.NumberSectors.QuadPart);
    _tprintf(_T("Total clusters\t\t: %I64u\n"), VolumeInfo.TotalClusters.QuadPart);
    _tprintf(_T("Free clusters\t\t: %I64u\n"), VolumeInfo.FreeClusters.QuadPart);
    _tprintf(_T("Free space\t\t: %I64u MB (%I64u%% of drive)\n"), (VolumeInfo.FreeClusters.QuadPart * VolumeInfo.BytesPerCluster) >> 20, (VolumeInfo.FreeClusters.QuadPart * 100) / VolumeInfo.TotalClusters.QuadPart);
 
    _tprintf(_T("\nAllocation Size\n---------------\n"));
    _tprintf(_T("Bytes per sector\t: %lu\n"), VolumeInfo.BytesPerSector);
    _tprintf(_T("Bytes per cluster\t: %lu\n"), VolumeInfo.BytesPerCluster);
    _tprintf(_T("Bytes per MFT record:\t: %lu\n"), VolumeInfo.BytesPerFileRecordSegment);
    _tprintf(_T("Clusters per MFT record\t: %lu\n"), VolumeInfo.ClustersPerFileRecordSegment);
 
    _tprintf(_T("\nMFT Information\n---------------\n"));
    _tprintf(_T("MFT size\t\t: %I64u MB (%I64u%% of drive)\n"), VolumeInfo.MftValidDataLength.QuadPart >> 20, (VolumeInfo.MftValidDataLength.QuadPart * 100) / VolumeSize);
    _tprintf(_T("MFT start cluster\t: %I64u\n"), VolumeInfo.MftStartLcn.QuadPart);
    _tprintf(_T("MFT zone clusters\t: %I64u - %I64u\n"), VolumeInfo.MftZoneStart.QuadPart, VolumeInfo.MftZoneEnd.QuadPart);
    MftClusters = VolumeInfo.MftZoneEnd.QuadPart - VolumeInfo.MftZoneStart.QuadPart;
    _tprintf(_T("MFT zone size\t\t: %I64u MB (%I64u%% of drive)\n"), (MftClusters * VolumeInfo.BytesPerCluster) >> 20, (MftClusters * 100) / VolumeInfo.TotalClusters.QuadPart);
    _tprintf(_T("MFT mirror start\t: %I64u\n"), VolumeInfo.Mft2StartLcn.QuadPart);
 
    _tprintf(_T("\nMeta-Data files\n---------------\n"));
    OutputBuffer = HeapAlloc(GetProcessHeap(), 0, VolumeInfo.BytesPerFileRecordSegment + sizeof(NTFS_FILE_RECORD_OUTPUT_BUFFER));
    while (MetaDataFiles[File] != NULL)
    {
        NTFS_FILE_RECORD_INPUT_BUFFER InputBuffer;
        PFILE_RECORD_HEADER FileRecord;
        PNTFS_ATTR_RECORD Attribute;
        ULONGLONG Size = 0;
 
        if (File == 5)
        {
            ++File;
            continue;
        }
 
        InputBuffer.FileReferenceNumber.QuadPart = File;
        if (!DeviceIoControl(VolumeHandle, FSCTL_GET_NTFS_FILE_RECORD, &InputBuffer, sizeof(InputBuffer),
                             OutputBuffer, VolumeInfo.BytesPerFileRecordSegment  + sizeof(NTFS_FILE_RECORD_OUTPUT_BUFFER),
                             &LengthReturned, NULL))
        {
            ++File;
            continue;
        }
 
        if (OutputBuffer->FileReferenceNumber.QuadPart != File)
        {
            ++File;
            continue;
        }
 
        FileRecord = (PFILE_RECORD_HEADER)OutputBuffer->FileRecordBuffer;
        if (FileRecord->Ntfs.Type != NRH_FILE_TYPE)
        {
            ++File;
            continue;
        }
 
        Attribute = (PNTFS_ATTR_RECORD)((ULONG_PTR)FileRecord + FileRecord->AttributeOffset);
        while (Attribute < (PNTFS_ATTR_RECORD)((ULONG_PTR)FileRecord + FileRecord->BytesInUse) &&
               Attribute->Type != ATTRIBUTE_TYPE_END)
        {
            if (Attribute->Type == ATTRIBUTE_TYPE_DATA)
            {
                Size = (Attribute->IsNonResident) ? Attribute->NonResident.AllocatedSize : Attribute->Resident.ValueLength;
                break;
            }
 
            Attribute = (PNTFS_ATTR_RECORD)((ULONG_PTR)Attribute + Attribute->Length);
        }
 
        _tprintf(_T("%s%I64u bytes\n"), MetaDataFiles[File], Size);
 
        ++File;
    }
 
    HeapFree(GetProcessHeap(), 0, OutputBuffer);
    CloseHandle(VolumeHandle);
    return 0;
}

Variable Documentation

MetaDataFiles

TCHAR* MetaDataFiles[]

static

Initial value:

= {
    _T("$MFT\t\t"),
    _T("$MFTMirr\t"),
    _T("$LogFile\t"),
    _T("$Volume\t\t"),
    _T("$AttrDef\t"),
    _T("."),
    _T("$Bitmap\t\t"),
    _T("$Boot\t\t"),
    _T("$BadClus\t"),
    _T("$Quota\t\t"),
    _T("$UpCase\t\t"),
    _T("$Extended\t"),
    NULL,
}

Definition at line 71 of file ntfsinfo.c.

Referenced by _tmain().