FILE_INFORMATION_CLASS values seems impoper. about win32metadata

[ChrisDenton]

Could you explain more what the issue is? That seems to match the Windows headers.

km/wdm.h

typedef enum _FILE_INFORMATION_CLASS {
    FileDirectoryInformation                         = 1,
    FileFullDirectoryInformation,                   // 2
    FileBothDirectoryInformation,                   // 3
    FileBasicInformation,                           // 4
    FileStandardInformation,                        // 5
    FileInternalInformation,                        // 6
    FileEaInformation,                              // 7
    FileAccessInformation,                          // 8
    FileNameInformation,                            // 9
    FileRenameInformation,                          // 10
    FileLinkInformation,                            // 11
    FileNamesInformation,                           // 12
    FileDispositionInformation,                     // 13
    FilePositionInformation,                        // 14
    FileFullEaInformation,                          // 15
    FileModeInformation,                            // 16
    FileAlignmentInformation,                       // 17
    FileAllInformation,                             // 18
    FileAllocationInformation,                      // 19
    FileEndOfFileInformation,                       // 20
    FileAlternateNameInformation,                   // 21
    FileStreamInformation,                          // 22
    FilePipeInformation,                            // 23
    FilePipeLocalInformation,                       // 24
    FilePipeRemoteInformation,                      // 25
    FileMailslotQueryInformation,                   // 26
    FileMailslotSetInformation,                     // 27
    FileCompressionInformation,                     // 28
    FileObjectIdInformation,                        // 29
    FileCompletionInformation,                      // 30
    FileMoveClusterInformation,                     // 31
    FileQuotaInformation,                           // 32
    FileReparsePointInformation,                    // 33
    FileNetworkOpenInformation,                     // 34
    FileAttributeTagInformation,                    // 35
    FileTrackingInformation,                        // 36
    FileIdBothDirectoryInformation,                 // 37
    FileIdFullDirectoryInformation,                 // 38
    FileValidDataLengthInformation,                 // 39
    FileShortNameInformation,                       // 40
    FileIoCompletionNotificationInformation,        // 41
    FileIoStatusBlockRangeInformation,              // 42
    FileIoPriorityHintInformation,                  // 43
    FileSfioReserveInformation,                     // 44
    FileSfioVolumeInformation,                      // 45
    FileHardLinkInformation,                        // 46
    FileProcessIdsUsingFileInformation,             // 47
    FileNormalizedNameInformation,                  // 48
    FileNetworkPhysicalNameInformation,             // 49
    FileIdGlobalTxDirectoryInformation,             // 50
    FileIsRemoteDeviceInformation,                  // 51
    FileUnusedInformation,                          // 52
    FileNumaNodeInformation,                        // 53
    FileStandardLinkInformation,                    // 54
    FileRemoteProtocolInformation,                  // 55

        //
        //  These are special versions of these operations (defined earlier)
        //  which can be used by kernel mode drivers only to bypass security
        //  access checks for Rename and HardLink operations.  These operations
        //  are only recognized by the IOManager, a file system should never
        //  receive these.
        //

    FileRenameInformationBypassAccessCheck,         // 56
    FileLinkInformationBypassAccessCheck,           // 57

        //
        // End of special information classes reserved for IOManager.
        //

    FileVolumeNameInformation,                      // 58
    FileIdInformation,                              // 59
    FileIdExtdDirectoryInformation,                 // 60
    FileReplaceCompletionInformation,               // 61
    FileHardLinkFullIdInformation,                  // 62
    FileIdExtdBothDirectoryInformation,             // 63
    FileDispositionInformationEx,                   // 64
    FileRenameInformationEx,                        // 65
    FileRenameInformationExBypassAccessCheck,       // 66
    FileDesiredStorageClassInformation,             // 67
    FileStatInformation,                            // 68
    FileMemoryPartitionInformation,                 // 69
    FileStatLxInformation,                          // 70
    FileCaseSensitiveInformation,                   // 71
    FileLinkInformationEx,                          // 72
    FileLinkInformationExBypassAccessCheck,         // 73
    FileStorageReserveIdInformation,                // 74
    FileCaseSensitiveInformationForceAccessCheck,   // 75
    FileKnownFolderInformation,                     // 76

    FileMaximumInformation
} FILE_INFORMATION_CLASS, *PFILE_INFORMATION_CLASS;

um/minwinbase.h makes you do some counting so I've edited in a few comments as a guide:

typedef enum _FILE_INFO_BY_HANDLE_CLASS {
    FileBasicInfo,
    FileStandardInfo,
    FileNameInfo,
    FileRenameInfo,
    FileDispositionInfo,
    FileAllocationInfo,
    FileEndOfFileInfo,
    FileStreamInfo,
    FileCompressionInfo,
    FileAttributeTagInfo,
    FileIdBothDirectoryInfo,            // 10
    FileIdBothDirectoryRestartInfo,
    FileIoPriorityHintInfo,
    FileRemoteProtocolInfo,
    FileFullDirectoryInfo,
    FileFullDirectoryRestartInfo,
#if (NTDDI_VERSION >= NTDDI_WIN8)
    FileStorageInfo,
    FileAlignmentInfo,
    FileIdInfo,
    FileIdExtdDirectoryInfo,
    FileIdExtdDirectoryRestartInfo,     // 20
#endif
#if (NTDDI_VERSION >= NTDDI_WIN10_RS1)
    FileDispositionInfoEx,              // 21
    FileRenameInfoEx,
#endif
#if (NTDDI_VERSION >= NTDDI_WIN10_19H1)
    FileCaseSensitiveInfo,
    FileNormalizedNameInfo,
#endif
    MaximumFileInfoByHandleClass
} FILE_INFO_BY_HANDLE_CLASS, *PFILE_INFO_BY_HANDLE_CLASS;

[kennykerr]

These values come from the Win32 metadata. I'm not sure how they're calculated.

[mikebattista]

We recently changed from scraping the SDK definition of FILE_INFORMATION_CLASS to scraping the WDK definition with microsoft/wdkmetadata#54.

While the two enum fields you mentioned are named similarly, they are different constants in different enums, and both should exist with the proper values in the latest projections/metadata.

[luceat-lux-vestra]

@ChrisDenton
I just tried to delete files with NtSetInformationFile and needed to specify FILE_INFORMATION_CLASS.
64 works well but 21 doesn't.

[ChrisDenton]

Yes. Why would you expect 21 to work? That's from a completely different enum as I said above.