ntfs文件系统文件索引遍历c++代码实现

以下是一个简单的NTFS文件系统文件索引遍历C代码实现：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <windows.h>

#define BUFFER_SIZE 4096

void traverseIndex(HANDLE hVolume, PNTFS_VOLUME_DATA_BUFFER ntfsVolData, ULONGLONG indexStart);

int main(int argc, char *argv[]) {
    if (argc != 2) {
        printf("Usage: %s <drive_letter>:\n", argv[0]);
        return 1;
    }

    char szVolumeName[8];
    sprintf(szVolumeName, "\\\\.\\%s:", argv[1]);

    HANDLE hVolume = CreateFile(szVolumeName, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
    if (hVolume == INVALID_HANDLE_VALUE) {
        printf("Failed to open volume %s\n", szVolumeName);
        return 1;
    }

    NTFS_VOLUME_DATA_BUFFER ntfsVolData;
    DWORD dwBytesReturned;
    if (!DeviceIoControl(hVolume, FSCTL_GET_NTFS_VOLUME_DATA, NULL, 0, &ntfsVolData, sizeof(ntfsVolData), &dwBytesReturned, NULL)) {
        printf("Failed to get NTFS volume data for %s\n", szVolumeName);
        CloseHandle(hVolume);
        return 1;
    }

    ULONGLONG indexStart = ntfsVolData.MftStartLcn * ntfsVolData.BytesPerSector;
    traverseIndex(hVolume, &ntfsVolData, indexStart);

    CloseHandle(hVolume);
    return 0;
}

void traverseIndex(HANDLE hVolume, PNTFS_VOLUME_DATA_BUFFER ntfsVolData, ULONGLONG indexStart) {
    BYTE *buffer = (BYTE*)malloc(BUFFER_SIZE);

    LARGE_INTEGER liOffset;
    liOffset.QuadPart = indexStart;

    DWORD dwBytesRead;
    if (!SetFilePointerEx(hVolume, liOffset, NULL, FILE_BEGIN) || !ReadFile(hVolume, buffer, BUFFER_SIZE, &dwBytesRead, NULL)) {
        printf("Failed to read from index at 0x%llx\n", indexStart);
        free(buffer);
        return;
    }

    PFILE_RECORD_HEADER pFrh = (PFILE_RECORD_HEADER)buffer;
    while (pFrh->Type != FILE_RECORD_TYPE_END && pFrh->Type != FILE_RECORD_TYPE_IN_USE) {
        if (pFrh->Type == FILE_RECORD_TYPE_UNUSED) {
            pFrh = (PFILE_RECORD_HEADER)((BYTE*)pFrh + ntfsVolData->BytesPerFileRecordSegment);
            continue;
        }

        PFILENAME_ATTRIBUTE pFileName = (PFILENAME_ATTRIBUTE)((BYTE*)pFrh + pFrh->FirstAttributeOffset);
        while ((BYTE*)pFileName < buffer + ntfsVolData->BytesPerFileRecordSegment && pFileName->Type != ATTRIBUTE_END) {
            if (pFileName->Type == ATTRIBUTE_FILENAME && pFileName->NameLength > 0) {
                WCHAR szName[pFileName->NameLength / 2 + 1];
                memset(szName, 0, sizeof(szName));
                MultiByteToWideChar(CP_UTF8, 0, (char*)pFileName + pFileName->NameOffset, pFileName->NameLength, szName, pFileName->NameLength / 2);

                printf("%ls\n", szName);
            }

            pFileName = (PFILENAME_ATTRIBUTE)((BYTE*)pFileName + pFileName->RecordLength);
        }

        pFrh = (PFILE_RECORD_HEADER)((BYTE*)pFrh + pFrh->RecordLength);
    }

    free(buffer);
}

此代码首先打开指定驱动器的NTFS卷，并获取卷数据。然后，它从MFT的起始位置开始遍历文件记录，找到包含文件名的文件名属性，然后输出文件名。输出的文件名为Unicode格式。