1  #ifndef Py_INTERNAL_FILEUTILS_WINDOWS_H
       2  #define Py_INTERNAL_FILEUTILS_WINDOWS_H
       3  #ifdef __cplusplus
       4  extern "C" {
       5  #endif
       6  
       7  #ifndef Py_BUILD_CORE
       8  #  error "Py_BUILD_CORE must be defined to include this header"
       9  #endif
      10  
      11  #ifdef MS_WINDOWS
      12  
      13  #if !defined(NTDDI_WIN10_NI) || !(NTDDI_VERSION >= NTDDI_WIN10_NI)
      14  typedef struct _FILE_STAT_BASIC_INFORMATION {
      15      LARGE_INTEGER FileId;
      16      LARGE_INTEGER CreationTime;
      17      LARGE_INTEGER LastAccessTime;
      18      LARGE_INTEGER LastWriteTime;
      19      LARGE_INTEGER ChangeTime;
      20      LARGE_INTEGER AllocationSize;
      21      LARGE_INTEGER EndOfFile;
      22      ULONG FileAttributes;
      23      ULONG ReparseTag;
      24      ULONG NumberOfLinks;
      25      ULONG DeviceType;
      26      ULONG DeviceCharacteristics;
      27      ULONG Reserved;
      28      LARGE_INTEGER VolumeSerialNumber;
      29      FILE_ID_128 FileId128;
      30  } FILE_STAT_BASIC_INFORMATION;
      31  
      32  typedef enum _FILE_INFO_BY_NAME_CLASS {
      33      FileStatByNameInfo,
      34      FileStatLxByNameInfo,
      35      FileCaseSensitiveByNameInfo,
      36      FileStatBasicByNameInfo,
      37      MaximumFileInfoByNameClass
      38  } FILE_INFO_BY_NAME_CLASS;
      39  #endif
      40  
      41  typedef BOOL (WINAPI *PGetFileInformationByName)(
      42      PCWSTR FileName,
      43      FILE_INFO_BY_NAME_CLASS FileInformationClass,
      44      PVOID FileInfoBuffer,
      45      ULONG FileInfoBufferSize
      46  );
      47  
      48  static inline BOOL _Py_GetFileInformationByName(
      49      PCWSTR FileName,
      50      FILE_INFO_BY_NAME_CLASS FileInformationClass,
      51      PVOID FileInfoBuffer,
      52      ULONG FileInfoBufferSize
      53  ) {
      54      static PGetFileInformationByName GetFileInformationByName = NULL;
      55      static int GetFileInformationByName_init = -1;
      56  
      57      if (GetFileInformationByName_init < 0) {
      58          HMODULE hMod = LoadLibraryW(L"api-ms-win-core-file-l2-1-4");
      59          GetFileInformationByName_init = 0;
      60          if (hMod) {
      61              GetFileInformationByName = (PGetFileInformationByName)GetProcAddress(
      62                  hMod, "GetFileInformationByName");
      63              if (GetFileInformationByName) {
      64                  GetFileInformationByName_init = 1;
      65              } else {
      66                  FreeLibrary(hMod);
      67              }
      68          }
      69      }
      70  
      71      if (GetFileInformationByName_init <= 0) {
      72          SetLastError(ERROR_NOT_SUPPORTED);
      73          return FALSE;
      74      }
      75      return GetFileInformationByName(FileName, FileInformationClass, FileInfoBuffer, FileInfoBufferSize);
      76  }
      77  
      78  static inline BOOL _Py_GetFileInformationByName_ErrorIsTrustworthy(int error)
      79  {
      80      switch(error) {
      81          case ERROR_FILE_NOT_FOUND:
      82          case ERROR_PATH_NOT_FOUND:
      83          case ERROR_NOT_READY:
      84          case ERROR_BAD_NET_NAME:
      85          case ERROR_BAD_NETPATH:
      86          case ERROR_BAD_PATHNAME:
      87          case ERROR_INVALID_NAME:
      88          case ERROR_FILENAME_EXCED_RANGE:
      89              return TRUE;
      90          case ERROR_NOT_SUPPORTED:
      91              return FALSE;
      92      }
      93      return FALSE;
      94  }
      95  
      96  #endif
      97  
      98  #endif