转自：http://blog.csdn.net/lostspeed/article/details/11738311

封了一个函数, 从 FILE_OBJECT 中 得到 FilePathName

在WinXpSp3下测试通过.

函数定义

  1. BOOLEAN IsValidUnicodeString(PUNICODE_STRING pstr);
  1. BOOLEAN GetFilePathNameFromFileObject(
  2. FILE_OBJECT * pFileObj,
  3. UNICODE_STRING * puniFilePathName);

函数实现

  1. BOOLEAN GetFilePathNameFromFileObject(
  2. FILE_OBJECT * pFileObj,
  3. UNICODE_STRING * puniFilePathName)
  4. {
  5. /// puniFilePathName 已经被 RtlInitUnicodeString 初始化过,
  6. /// .Buffer 有MAX_PATH宽字符长度
  7. BOOLEAN bValidFN_FileObj = FALSE;
  8. BOOLEAN bValidFN_RelatedFileObj = FALSE;
  9. PFILE_OBJECT pRelatedFileObject = NULL;
  10. UNICODE_STRING ustrTmp;
  11. UNICODE_STRING ustrLink; ///< 分隔符号, e.g. L'\\'
  12. if ((NULL == pFileObj) || (NULL == puniFilePathName))
  13. return FALSE;
  14. /// 初始化数据
  15. RtlInitUnicodeString(&ustrTmp, NULL);
  16. RtlInitUnicodeString(&ustrLink, L"\\");
  17. RtlZeroMemory(puniFilePathName->Buffer, puniFilePathName->MaximumLength);
  18. puniFilePathName->Length = 0;
  19. pRelatedFileObject = pFileObj->RelatedFileObject;
  20. bValidFN_FileObj = IsValidUnicodeString(&pFileObj->FileName);
  21. bValidFN_RelatedFileObj =
  22. IsValidUnicodeString(&pRelatedFileObject->FileName);
  23. /// 盘符
  24. IoVolumeDeviceToDosName(pFileObj->DeviceObject, &ustrTmp);
  25. RtlCopyUnicodeString(puniFilePathName, &ustrTmp);
  26. RtlFreeUnicodeString(&ustrTmp); ///< !
  27. /// 相对路径
  28. /// pRelatedFileObject->FileName 也有可能是空的
  29. /// 相对全路径名称全部在 pFileObj->FileName
  30. if (bValidFN_RelatedFileObj)
  31. {
  32. /// pRelatedFileObject->FileName.Buffer 可能是有效的
  33. /// 却不是一个可见的宽字符串, 以 L'\0'开头
  34. if ((L'\\' != pRelatedFileObject->FileName.Buffer[0])
  35. &&(L'\0' != pRelatedFileObject->FileName.Buffer[0]))
  36. {
  37. RtlUnicodeStringCat(puniFilePathName, &ustrLink);
  38. }
  39. RtlUnicodeStringCat(puniFilePathName, &pRelatedFileObject->FileName);
  40. }
  41. /// 文件名, 也有可能是包含相对路径的全路径名称.
  42. /// e.g. "\Windows\System\xx.yyy"
  43. if (bValidFN_FileObj)
  44. {
  45. if ((L'\\' != pFileObj->FileName.Buffer[0])
  46. && (L'\0' != pFileObj->FileName.Buffer[0]))
  47. {
  48. RtlUnicodeStringCat(puniFilePathName, &ustrLink);
  49. }
  50. RtlUnicodeStringCat(puniFilePathName, &pFileObj->FileName);
  51. }
  52. return (bValidFN_FileObj || bValidFN_RelatedFileObj);
  53. }
  1. BOOLEAN IsValidUnicodeString(PUNICODE_STRING pstr)
  2. {
  3. BOOLEAN bRc = FALSE;
  4. ULONG   ulIndex = 0;
  5. __try
  6. {
  7. if (!MmIsAddressValid(pstr))
  8. return FALSE;
  9. if ((NULL == pstr->Buffer) || (0 == pstr->Length))
  10. return FALSE;
  11. for (ulIndex = 0; ulIndex < pstr->Length; ulIndex++)
  12. {
  13. if (!MmIsAddressValid((UCHAR *)pstr->Buffer + ulIndex))
  14. return FALSE;
  15. }
  16. bRc = TRUE;
  17. }
  18. __except(EXCEPTION_EXECUTE_HANDLER)
  19. {
  20. bRc = FALSE;
  21. }
  22. return bRc;
  23. }

在分派例程中得到 FILE_OBJECT 方法

  1. pIoStack = IoGetCurrentIrpStackLocation(pIrp);
  1. pFileObject = pIoStack->FileObject;

入参的准备

  1. WCHAR               cFilePathNameW[MAX_PATH];
  2. UNICODE_STRING      unistrFilePathName;
  3. RtlZeroMemory(cFilePathNameW, sizeof(cFilePathNameW));
  4. RtlInitUnicodeString(&unistrFilePathName, cFilePathNameW);
  5. unistrFilePathName.MaximumLength = sizeof(cFilePathNameW); ///< !

效果图

    1. DisPatchDeviceControl IOCTL 0x22e000
    2. cFilePathName[0] = C:\
    3. cFilePathName[1] = C:\Documents and Settings\All Users\Application Data\VMware
    4. cFilePathName[2] = C:\Documents and Settings\All Users\Application Data\VMware\VMware Tools
    5. cFilePathName[3] = C:\Documents and Settings\All Users\Application Data\VMware\VMware Tools\
    6. cFilePathName[4] = C:\WINDOWS\system32\Msimtf.dll
    7. cFilePathName[5] = C:\WINDOWS\system32\NOTEPAD.EXE
    8. cFilePathName[6] = C:\WINDOWS\AppPatch\sysmain.sdb
    9. cFilePathName[7] = C:\WINDOWS\AppPatch\systest.sdb
    10. cFilePathName[8] = C:\WINDOWS\system32\
    11. cFilePathName[9] = C:\WINDOWS\
    12. cFilePathName[10] = C:\WINDOWS\system32\NOTEPAD.EXE.Manifest
    13. cFilePathName[11] = C:\WINDOWS\system32\NOTEPAD.EXE.Config
    14. cFilePathName[12] = C:\WINDOWS\WinSxS\Policies\x86_Policy.6.0.Microsoft.Windows.Common-Controls_6595b64144ccf1df_zh-CN_f3ffe327\
    15. cFilePathName[13] = C:\WINDOWS\Assembly\GAC\Policy.6.0.Microsoft.Windows.Common-Controls\
    16. cFilePathName[14] = C:\WINDOWS\WinSxS\Policies\x86_Policy.6.0.Microsoft.Windows.Common-Controls_6595b64144ccf1df_zh-CHS_6bff526c\
    17. cFilePathName[15] = C:\WINDOWS\WinSxS\Policies\x86_Policy.6.0.Microsoft.Windows.Common-Controls_6595b64144ccf1df_x-ww_5ddad775\
    18. cFilePathName[16] = C:\WINDOWS\WinSxS\Policies\x86_Policy.6.0.Microsoft.Windows.Common-Controls_6595b64144ccf1df_x-ww_5ddad775\6.0.2600.5512.Policy
    19. cFilePathName[17] = C:\WINDOWS\WinSxS\Policies\x86_Policy.6.0.Microsoft.Windows.Common-Controls.mui_6595b64144ccf1df_zh-CN_b45a2b14\
    20. cFilePathName[18] = C:\WINDOWS\Assembly\GAC\Policy.6.0.Microsoft.Windows.Common-Controls.mui\
    21. cFilePathName[19] = C:\WINDOWS\WinSxS\Policies\x86_Policy.6.0.Microsoft.Windows.Common-Controls.mui_6595b64144ccf1df_zh-CHS_2c599a59\
    22. cFilePathName[20] = C:\WINDOWS\WinSxS\Manifests\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.2600.5512_x-ww_35d4ce83.Manifest
    23. cFilePathName[21] = C:\WINDOWS\Prefetch\NOTEPAD.EXE-336351A9.pf
    24. cFilePathName[22] = C:\Documents and Settings\Administrator\
    25. cFilePathName[23] = C:\Documents and Settings\Administrator\桌面\
    26. cFilePathName[24] = C:\DOCUME~1\
    27. cFilePathName[25] = C:\DOCUME~1\ADMINI~1\
    28. cFilePathName[26] = C:\DOCUME~1\ADMINI~1\LOCALS~1\
    29. cFilePathName[27] = C:\Documents and Settings\Administrator\桌面\abc.txt
    30. cFilePathName[28] = C:\Documents and Settings\Administrator\桌面
    31. cFilePathName[29] = C:\SYSTEM VOLUME INFORMATION\
    32. cFilePathName[30] = C:\Documents and Settings\Administrator\Recent\
    33. cFilePathName[31] = C:\Documents and Settings\Administrator\Recent\abc.txt.lnk
    34. cFilePathName[32] = C:\SYSTEM VOLUME INFORMATION\_RESTORE{288FCF24-DDBA-4A0A-98C0-50E279B93ECC}\
    35. cFilePathName[33] = C:\SYSTEM VOLUME INFORMATION\_RESTORE{288FCF24-DDBA-4A0A-98C0-50E279B93ECC}\RP4\
    36. cFilePathName[34] = C:\WINDOWS\APPPATCH\
    37. cFilePathName[35] = C:\WINDOWS\WINSXS\
    38. cFilePathName[36] = C:\WINDOWS\WINSXS\X86_MICROSOFT.WINDOWS.COMMON-CONTROLS_6595B64144CCF1DF_6.0.2600.5512_X-WW_35D4CE83\
    39. cFilePathName[37] = C:\WINDOWS\SYSTEM32\NTDLL.DLL
    40. cFilePathName[38] = C:\WINDOWS\SYSTEM32\KERNEL32.DLL
    41. cFilePathName[39] = C:\WINDOWS\SYSTEM32\UNICODE.NLS
    42. cFilePathName[40] = C:\WINDOWS\SYSTEM32\LOCALE.NLS
    43. cFilePathName[41] = C:\WINDOWS\SYSTEM32\SORTTBLS.NLS
    44. cFilePathName[42] = C:\WINDOWS\SYSTEM32\COMDLG32.DLL
    45. cFilePathName[43] = C:\WINDOWS\SYSTEM32\ADVAPI32.DLL
    46. cFilePathName[44] = C:\WINDOWS\SYSTEM32\RPCRT4.DLL
    47. cFilePathName[45] = C:\WINDOWS\SYSTEM32\SECUR32.DLL
    48. cFilePathName[46] = C:\WINDOWS\WINSXS\X86_MICROSOFT.WINDOWS.COMMON-CONTROLS_6595B64144CCF1DF_6.0.2600.5512_X-WW_35D4CE83\COMCTL32.DLL
    49. cFilePathName[47] = C:\WINDOWS\SYSTEM32\MSVCRT.DLL
    50. cFilePathName[48] = C:\WINDOWS\SYSTEM32\GDI32.DLL
    51. cFilePathName[49] = C:\WINDOWS\SYSTEM32\USER32.DLL
    52. cFilePathName[50] = C:\WINDOWS\SYSTEM32\SHLWAPI.DLL
    53. cFilePathName[51] = C:\WINDOWS\SYSTEM32\SHELL32.DLL
    54. cFilePathName[52] = C:\WINDOWS\SYSTEM32\WINSPOOL.DRV
    55. cFilePathName[53] = C:\WINDOWS\SYSTEM32\SHIMENG.DLL
    56. cFilePathName[54] = C:\WINDOWS\APPPATCH\ACGENRAL.DLL
    57. cFilePathName[55] = C:\WINDOWS\SYSTEM32\WINMM.DLL
    58. cFilePathName[56] = C:\WINDOWS\SYSTEM32\OLE32.DLL
    59. cFilePathName[57] = C:\WINDOWS\SYSTEM32\OLEAUT32.DLL
    60. cFilePathName[58] = C:\WINDOWS\SYSTEM32\MSACM32.DLL
    61. cFilePathName[59] = C:\WINDOWS\SYSTEM32\VERSION.DLL
    62. cFilePathName[60] = C:\WINDOWS\SYSTEM32\USERENV.DLL
    63. cFilePathName[61] = C:\WINDOWS\SYSTEM32\UXTHEME.DLL
    64. cFilePathName[62] = C:\WINDOWS\SYSTEM32\CTYPE.NLS
    65. cFilePathName[63] = C:\WINDOWS\SYSTEM32\IMM32.DLL
    66. cFilePathName[64] = C:\WINDOWS\SYSTEM32\LPK.DLL
    67. cFilePathName[65] = C:\WINDOWS\SYSTEM32\USP10.DLL
    68. cFilePathName[66] = C:\WINDOWS\WINDOWSSHELL.MANIFEST
    69. cFilePathName[67] = C:\WINDOWS\SYSTEM32\MSCTF.DLL
    70. cFilePathName[68] = C:\WINDOWS\SYSTEM32\MSCTFIME.IME
    71. cFilePathName[69] = C:\SYSTEM VOLUME INFORMATION\_RESTORE{288FCF24-DDBA-4A0A-98C0-50E279B93ECC}\RP4\CHANGE.LOG
    72. cFilePathName[70] = C:\BOOT.INI
    73. cFilePathName[71] = C:\WINDOWS\SYSTEM32\WIN32K.SYS
    74. cFilePathName[72] = C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.2600.5512_x-ww_35d4ce83
    75. cFilePathName[73] = C:\Documents and Settings\
    76. cFilePathName[74] = C:\Documents and Settings\Administrator\Local Settings\
    77. cFilePathName[75] = C:\Documents and Settings\Administrator\Local Settings\History\desktop.ini
    78. cFilePathName[76] = C:\WINDOWS\WindowsShell.Config
    79. cFilePathName[77] = C:\WINDOWS\system32\SHELL32.dll.124.Manifest
    80. cFilePathName[78] = C:\WINDOWS\system32\SHELL32.dll.124.Config
    81. cFilePathName[79] = C:\WINDOWS\Prefetch\
    82. cFilePathName[80] = C:\WINDOWS\system32\0804\
    83. cFilePathName[81] = C:\WINDOWS\MUI\Fallback\0804\
    84. cFilePathName[82] = C:\WINDOWS\system32\DRIVERS\MUI\0804\
    85. cFilePathName[83] = C:\WINDOWS\system32\DRIVERS\ACPI.sys
    86. cFilePathName[84] = C:\WINDOWS\system32\DRIVERS\mssmbios.sys
    87. cFilePathName[85] = C:\WINDOWS\system32\DRIVERS\intelppm.sys
    88. cFilePathName[86] = C:\WINDOWS\system32\DRIVERS\ipnat.sys
    89. cFilePathName[87] = C:\WINDOWS\System32\Drivers\HTTP.sys
    90. cFilePathName[88] = C:\WINDOWS\system32\WBEM\Logs\wmiprov.log
    91. cFilePathName[89] = C:\WINDOWS\SoftwareDistribution\DataStore\
    92. cFilePathName[90] = C:\WINDOWS\SoftwareDistribution\DataStore\DataStore.edb
    93. cFilePathName[91] = C:\WINDOWS\SoftwareDistribution\DataStore\DataStore.edb\
    94. cFilePathName[92] = C:\WINDOWS\SoftwareDistribution\DataStore
    95. cFilePathName[93] = C:\WINDOWS\SoftwareDistribution
    96. cFilePathName[94] = C:\WINDOWS\SoftwareDistribution\
    97. cFilePathName[95] = C:\WINDOWS
    98. cFilePathName[96] = C:\WINDOWS\SoftwareDistribution\DataStore\Logs\edb.chk
    99. cFilePathName[97] = C:\WINDOWS\SoftwareDistribution\DataStore\Logs\edb.chk\
    100. cFilePathName[98] = C:\WINDOWS\SoftwareDistribution\DataStore\Logs
    101. cFilePathName[99] = C:\WINDOWS\system32\xpsp2res.dll

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