mirror of
https://github.com/reactos/reactos.git
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213 lines
6.9 KiB
C
213 lines
6.9 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS NTFS Information tool
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* FILE: cmdutils/ntfsinfo/ntfsinfo.c
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* PURPOSE: Query information from NTFS volume using FSCTL
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* PROGRAMMERS: Pierre Schweitzer <pierre@reactos.org>
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*/
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#include <windows.h>
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#include <tchar.h>
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#include <stdio.h>
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typedef struct
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{
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ULONG Type;
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USHORT UsaOffset;
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USHORT UsaCount;
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ULONGLONG Lsn;
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} NTFS_RECORD_HEADER, *PNTFS_RECORD_HEADER;
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#define NRH_FILE_TYPE 0x454C4946
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#define ATTRIBUTE_TYPE_DATA 0x80
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#define ATTRIBUTE_TYPE_END 0xFFFFFFFF
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typedef struct _FILE_RECORD_HEADER
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{
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NTFS_RECORD_HEADER Ntfs;
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USHORT SequenceNumber;
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USHORT LinkCount;
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USHORT AttributeOffset;
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USHORT Flags;
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ULONG BytesInUse;
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ULONG BytesAllocated;
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ULONGLONG BaseFileRecord;
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USHORT NextAttributeNumber;
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} FILE_RECORD_HEADER, *PFILE_RECORD_HEADER;
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typedef struct
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{
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ULONG Type;
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ULONG Length;
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UCHAR IsNonResident;
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UCHAR NameLength;
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USHORT NameOffset;
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USHORT Flags;
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USHORT Instance;
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union
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{
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struct
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{
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ULONG ValueLength;
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USHORT ValueOffset;
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UCHAR Flags;
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UCHAR Reserved;
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} Resident;
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struct
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{
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ULONGLONG LowestVCN;
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ULONGLONG HighestVCN;
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USHORT MappingPairsOffset;
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USHORT CompressionUnit;
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UCHAR Reserved[4];
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LONGLONG AllocatedSize;
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LONGLONG DataSize;
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LONGLONG InitializedSize;
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LONGLONG CompressedSize;
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} NonResident;
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};
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} NTFS_ATTR_RECORD, *PNTFS_ATTR_RECORD;
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static TCHAR * MetaDataFiles[] = {
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_T("$MFT\t\t"),
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_T("$MFTMirr\t"),
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_T("$LogFile\t"),
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_T("$Volume\t\t"),
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_T("$AttrDef\t"),
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_T("."),
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_T("$Bitmap\t\t"),
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_T("$Boot\t\t"),
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_T("$BadClus\t"),
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_T("$Quota\t\t"),
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_T("$UpCase\t\t"),
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_T("$Extended\t"),
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NULL,
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};
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int
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__cdecl
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_tmain(int argc, const TCHAR *argv[])
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{
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TCHAR VolumeName[] = _T("\\\\.\\C:");
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HANDLE VolumeHandle;
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NTFS_VOLUME_DATA_BUFFER VolumeInfo;
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DWORD LengthReturned;
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ULONGLONG VolumeSize;
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ULONGLONG MftClusters;
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UINT File = 0;
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PNTFS_FILE_RECORD_OUTPUT_BUFFER OutputBuffer;
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if (argc > 1)
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{
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TCHAR Letter = argv[1][0];
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if ((Letter >= 'A' && Letter <= 'Z') ||
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(Letter >= 'a' && Letter <= 'z'))
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{
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VolumeName[4] = Letter;
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}
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}
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VolumeHandle = CreateFile(VolumeName, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, 0 );
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if (VolumeHandle == INVALID_HANDLE_VALUE)
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{
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_ftprintf(stderr, _T("Failed opening the volume '%s' (%lx)\n"), VolumeName, GetLastError());
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return 1;
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}
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if (!DeviceIoControl(VolumeHandle, FSCTL_GET_NTFS_VOLUME_DATA, NULL, 0, &VolumeInfo, sizeof(VolumeInfo), &LengthReturned, NULL))
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{
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_ftprintf(stderr, _T("Failed requesting volume '%s' data (%lx)\n"), VolumeName, GetLastError());
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CloseHandle(VolumeHandle);
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return 1;
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}
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if (LengthReturned < sizeof(VolumeInfo))
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{
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_ftprintf(stderr, _T("Failed reading volume '%s' data (%lx)\n"), VolumeName, GetLastError());
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CloseHandle(VolumeHandle);
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return 1;
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}
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_tprintf(_T("Volume Size\n-----------\n"));
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VolumeSize = VolumeInfo.TotalClusters.QuadPart * VolumeInfo.BytesPerCluster;
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_tprintf(_T("Volume size\t\t: %I64u MB\n"), VolumeSize >> 20);
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_tprintf(_T("Total sectors\t\t: %I64u\n"), VolumeInfo.NumberSectors.QuadPart);
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_tprintf(_T("Total clusters\t\t: %I64u\n"), VolumeInfo.TotalClusters.QuadPart);
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_tprintf(_T("Free clusters\t\t: %I64u\n"), VolumeInfo.FreeClusters.QuadPart);
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_tprintf(_T("Free space\t\t: %I64u MB (%u%% of drive)\n"), (VolumeInfo.FreeClusters.QuadPart * VolumeInfo.BytesPerCluster) >> 20, (VolumeInfo.FreeClusters.QuadPart * 100) / VolumeInfo.TotalClusters.QuadPart);
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_tprintf(_T("\nAllocation Size\n---------------\n"));
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_tprintf(_T("Bytes per sector\t: %lu\n"), VolumeInfo.BytesPerSector);
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_tprintf(_T("Bytes per cluster\t: %lu\n"), VolumeInfo.BytesPerCluster);
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_tprintf(_T("Bytes per MFT record:\t: %lu\n"), VolumeInfo.BytesPerFileRecordSegment);
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_tprintf(_T("Clusters per MFT record\t: %lu\n"), VolumeInfo.ClustersPerFileRecordSegment);
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_tprintf(_T("\nMFT Information\n---------------\n"));
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_tprintf(_T("MFT size\t\t: %I64u MB (%u%% of drive)\n"), VolumeInfo.MftValidDataLength.QuadPart >> 20, (VolumeInfo.MftValidDataLength.QuadPart * 100) / VolumeSize);
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_tprintf(_T("MFT start cluster\t: %I64u\n"), VolumeInfo.MftStartLcn.QuadPart);
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_tprintf(_T("MFT zone clusters\t: %I64u - %I64u\n"), VolumeInfo.MftZoneStart.QuadPart, VolumeInfo.MftZoneEnd.QuadPart);
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MftClusters = VolumeInfo.MftZoneEnd.QuadPart - VolumeInfo.MftZoneStart.QuadPart;
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_tprintf(_T("MFT zone size\t\t: %I64u MB (%u%% of drive)\n"), (MftClusters * VolumeInfo.BytesPerCluster) >> 20, (MftClusters * 100) / VolumeInfo.TotalClusters.QuadPart);
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_tprintf(_T("MFT mirror start\t: %I64u\n"), VolumeInfo.Mft2StartLcn.QuadPart);
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_tprintf(_T("\nMeta-Data files\n---------------\n"));
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OutputBuffer = HeapAlloc(GetProcessHeap(), 0, VolumeInfo.BytesPerFileRecordSegment + sizeof(NTFS_FILE_RECORD_OUTPUT_BUFFER));
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while (MetaDataFiles[File] != NULL)
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{
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NTFS_FILE_RECORD_INPUT_BUFFER InputBuffer;
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PFILE_RECORD_HEADER FileRecord;
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PNTFS_ATTR_RECORD Attribute;
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ULONGLONG Size = 0;
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if (File == 5)
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{
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++File;
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continue;
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}
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InputBuffer.FileReferenceNumber.QuadPart = File;
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if (!DeviceIoControl(VolumeHandle, FSCTL_GET_NTFS_FILE_RECORD, &InputBuffer, sizeof(InputBuffer),
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OutputBuffer, VolumeInfo.BytesPerFileRecordSegment + sizeof(NTFS_FILE_RECORD_OUTPUT_BUFFER),
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&LengthReturned, NULL))
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{
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++File;
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continue;
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}
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if (OutputBuffer->FileReferenceNumber.QuadPart != File)
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{
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++File;
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continue;
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}
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FileRecord = (PFILE_RECORD_HEADER)OutputBuffer->FileRecordBuffer;
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if (FileRecord->Ntfs.Type != NRH_FILE_TYPE)
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{
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++File;
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continue;
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}
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Attribute = (PNTFS_ATTR_RECORD)((ULONG_PTR)FileRecord + FileRecord->AttributeOffset);
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while (Attribute < (PNTFS_ATTR_RECORD)((ULONG_PTR)FileRecord + FileRecord->BytesInUse) &&
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Attribute->Type != ATTRIBUTE_TYPE_END)
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{
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if (Attribute->Type == ATTRIBUTE_TYPE_DATA)
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{
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Size = (Attribute->IsNonResident) ? Attribute->NonResident.AllocatedSize : Attribute->Resident.ValueLength;
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break;
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}
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Attribute = (PNTFS_ATTR_RECORD)((ULONG_PTR)Attribute + Attribute->Length);
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}
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_tprintf(_T("%s%I64u bytes\n"), MetaDataFiles[File], Size);
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++File;
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}
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HeapFree(GetProcessHeap(), 0, OutputBuffer);
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CloseHandle(VolumeHandle);
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return 0;
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}
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