python3.12/internal/pycore_fileutils_windows.h

0001 #ifndef Py_INTERNAL_FILEUTILS_WINDOWS_H
0002 #define Py_INTERNAL_FILEUTILS_WINDOWS_H
0003 #ifdef __cplusplus
0004 extern "C" {
0005 #endif
0006
0007 #ifndef Py_BUILD_CORE
0008 #  error "Py_BUILD_CORE must be defined to include this header"
0009 #endif
0010
0011 #ifdef MS_WINDOWS
0012
0013 #if !defined(NTDDI_WIN10_NI) || !(NTDDI_VERSION >= NTDDI_WIN10_NI)
0014 typedef struct _FILE_STAT_BASIC_INFORMATION {
0015     LARGE_INTEGER FileId;
0016     LARGE_INTEGER CreationTime;
0017     LARGE_INTEGER LastAccessTime;
0018     LARGE_INTEGER LastWriteTime;
0019     LARGE_INTEGER ChangeTime;
0020     LARGE_INTEGER AllocationSize;
0021     LARGE_INTEGER EndOfFile;
0022     ULONG FileAttributes;
0023     ULONG ReparseTag;
0024     ULONG NumberOfLinks;
0025     ULONG DeviceType;
0026     ULONG DeviceCharacteristics;
0027     ULONG Reserved;
0028     LARGE_INTEGER VolumeSerialNumber;
0029     FILE_ID_128 FileId128;
0030 } FILE_STAT_BASIC_INFORMATION;
0031
0032 typedef enum _FILE_INFO_BY_NAME_CLASS {
0033     FileStatByNameInfo,
0034     FileStatLxByNameInfo,
0035     FileCaseSensitiveByNameInfo,
0036     FileStatBasicByNameInfo,
0037     MaximumFileInfoByNameClass
0038 } FILE_INFO_BY_NAME_CLASS;
0039 #endif
0040
0041 typedef BOOL (WINAPI *PGetFileInformationByName)(
0042     PCWSTR FileName,
0043     FILE_INFO_BY_NAME_CLASS FileInformationClass,
0044     PVOID FileInfoBuffer,
0045     ULONG FileInfoBufferSize
0046 );
0047
0048 static inline BOOL _Py_GetFileInformationByName(
0049     PCWSTR FileName,
0050     FILE_INFO_BY_NAME_CLASS FileInformationClass,
0051     PVOID FileInfoBuffer,
0052     ULONG FileInfoBufferSize
0053 ) {
0054     static PGetFileInformationByName GetFileInformationByName = NULL;
0055     static int GetFileInformationByName_init = -1;
0056
0057     if (GetFileInformationByName_init < 0) {
0058         HMODULE hMod = LoadLibraryW(L"api-ms-win-core-file-l2-1-4");
0059         GetFileInformationByName_init = 0;
0060         if (hMod) {
0061             GetFileInformationByName = (PGetFileInformationByName)GetProcAddress(
0062                 hMod, "GetFileInformationByName");
0063             if (GetFileInformationByName) {
0064                 GetFileInformationByName_init = 1;
0065             } else {
0066                 FreeLibrary(hMod);
0067             }
0068         }
0069     }
0070
0071     if (GetFileInformationByName_init <= 0) {
0072         SetLastError(ERROR_NOT_SUPPORTED);
0073         return FALSE;
0074     }
0075     return GetFileInformationByName(FileName, FileInformationClass, FileInfoBuffer, FileInfoBufferSize);
0076 }
0077
0078 static inline BOOL _Py_GetFileInformationByName_ErrorIsTrustworthy(int error)
0079 {
0080     switch(error) {
0081         case ERROR_FILE_NOT_FOUND:
0082         case ERROR_PATH_NOT_FOUND:
0083         case ERROR_NOT_READY:
0084         case ERROR_BAD_NET_NAME:
0085         case ERROR_BAD_NETPATH:
0086         case ERROR_BAD_PATHNAME:
0087         case ERROR_INVALID_NAME:
0088         case ERROR_FILENAME_EXCED_RANGE:
0089             return TRUE;
0090         case ERROR_NOT_SUPPORTED:
0091             return FALSE;
0092     }
0093     return FALSE;
0094 }
0095
0096 #endif
0097
0098 #endif