FILE_INFORMATION_CLASS - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers
#ifndef _NTIOAPI_H

typedef enum _FILE_INFORMATION_CLASS
{
    FileDirectoryInformation = 1, // q: FILE_DIRECTORY_INFORMATION (requires FILE_LIST_DIRECTORY) (NtQueryDirectoryFile[Ex])
    FileFullDirectoryInformation, // q: FILE_FULL_DIR_INFORMATION (requires FILE_LIST_DIRECTORY) (NtQueryDirectoryFile[Ex])
    FileBothDirectoryInformation, // q: FILE_BOTH_DIR_INFORMATION (requires FILE_LIST_DIRECTORY) (NtQueryDirectoryFile[Ex])
    FileBasicInformation, // q; s: FILE_BASIC_INFORMATION (q: requires FILE_READ_ATTRIBUTES; s: requires FILE_WRITE_ATTRIBUTES)
    FileStandardInformation, // q: FILE_STANDARD_INFORMATION, FILE_STANDARD_INFORMATION_EX
    FileInternalInformation, // q: FILE_INTERNAL_INFORMATION
    FileEaInformation, // q: FILE_EA_INFORMATION
    FileAccessInformation, // q: FILE_ACCESS_INFORMATION
    FileNameInformation, // q: FILE_NAME_INFORMATION
    FileRenameInformation, // s: FILE_RENAME_INFORMATION (requires DELETE) // 10
    FileLinkInformation, // s: FILE_LINK_INFORMATION
    FileNamesInformation, // q: FILE_NAMES_INFORMATION (requires FILE_LIST_DIRECTORY) (NtQueryDirectoryFile[Ex])
    FileDispositionInformation, // s: FILE_DISPOSITION_INFORMATION (requires DELETE)
    FilePositionInformation, // q; s: FILE_POSITION_INFORMATION
    FileFullEaInformation, // FILE_FULL_EA_INFORMATION
    FileModeInformation, // q; s: FILE_MODE_INFORMATION
    FileAlignmentInformation, // q: FILE_ALIGNMENT_INFORMATION
    FileAllInformation, // q: FILE_ALL_INFORMATION (requires FILE_READ_ATTRIBUTES)
    FileAllocationInformation, // s: FILE_ALLOCATION_INFORMATION (requires FILE_WRITE_DATA)
    FileEndOfFileInformation, // s: FILE_END_OF_FILE_INFORMATION (requires FILE_WRITE_DATA) // 20
    FileAlternateNameInformation, // q: FILE_NAME_INFORMATION
    FileStreamInformation, // q: FILE_STREAM_INFORMATION
    FilePipeInformation, // q; s: FILE_PIPE_INFORMATION (q: requires FILE_READ_ATTRIBUTES; s: requires FILE_WRITE_ATTRIBUTES)
    FilePipeLocalInformation, // q: FILE_PIPE_LOCAL_INFORMATION (requires FILE_READ_ATTRIBUTES)
    FilePipeRemoteInformation, // q; s: FILE_PIPE_REMOTE_INFORMATION (q: requires FILE_READ_ATTRIBUTES; s: requires FILE_WRITE_ATTRIBUTES)
    FileMailslotQueryInformation, // q: FILE_MAILSLOT_QUERY_INFORMATION
    FileMailslotSetInformation, // s: FILE_MAILSLOT_SET_INFORMATION
    FileCompressionInformation, // q: FILE_COMPRESSION_INFORMATION
    FileObjectIdInformation, // q: FILE_OBJECTID_INFORMATION (requires FILE_LIST_DIRECTORY) (NtQueryDirectoryFile[Ex])
    FileCompletionInformation, // s: FILE_COMPLETION_INFORMATION // 30
    FileMoveClusterInformation, // s: FILE_MOVE_CLUSTER_INFORMATION (requires FILE_WRITE_DATA)
    FileQuotaInformation, // q: FILE_QUOTA_INFORMATION (requires FILE_LIST_DIRECTORY) (NtQueryDirectoryFile[Ex])
    FileReparsePointInformation, // q: FILE_REPARSE_POINT_INFORMATION (requires FILE_LIST_DIRECTORY) (NtQueryDirectoryFile[Ex])
    FileNetworkOpenInformation, // q: FILE_NETWORK_OPEN_INFORMATION (requires FILE_READ_ATTRIBUTES)
    FileAttributeTagInformation, // q: FILE_ATTRIBUTE_TAG_INFORMATION (requires FILE_READ_ATTRIBUTES)
    FileTrackingInformation, // s: FILE_TRACKING_INFORMATION (requires FILE_WRITE_DATA)
    FileIdBothDirectoryInformation, // q: FILE_ID_BOTH_DIR_INFORMATION (requires FILE_LIST_DIRECTORY) (NtQueryDirectoryFile[Ex])
    FileIdFullDirectoryInformation, // q: FILE_ID_FULL_DIR_INFORMATION (requires FILE_LIST_DIRECTORY) (NtQueryDirectoryFile[Ex])
    FileValidDataLengthInformation, // s: FILE_VALID_DATA_LENGTH_INFORMATION (requires FILE_WRITE_DATA and/or SeManageVolumePrivilege)
    FileShortNameInformation, // s: FILE_NAME_INFORMATION (requires DELETE) // 40
    FileIoCompletionNotificationInformation, // q; s: FILE_IO_COMPLETION_NOTIFICATION_INFORMATION (q: requires FILE_READ_ATTRIBUTES) // since VISTA
    FileIoStatusBlockRangeInformation, // s: FILE_IOSTATUSBLOCK_RANGE_INFORMATION (requires SeLockMemoryPrivilege)
    FileIoPriorityHintInformation, // q; s: FILE_IO_PRIORITY_HINT_INFORMATION, FILE_IO_PRIORITY_HINT_INFORMATION_EX (q: requires FILE_READ_DATA)
    FileSfioReserveInformation, // q; s: FILE_SFIO_RESERVE_INFORMATION (q: requires FILE_READ_DATA)
    FileSfioVolumeInformation, // q: FILE_SFIO_VOLUME_INFORMATION (requires FILE_READ_ATTRIBUTES)
    FileHardLinkInformation, // q: FILE_LINKS_INFORMATION
    FileProcessIdsUsingFileInformation, // q: FILE_PROCESS_IDS_USING_FILE_INFORMATION (requires FILE_READ_ATTRIBUTES)
    FileNormalizedNameInformation, // q: FILE_NAME_INFORMATION
    FileNetworkPhysicalNameInformation, // q: FILE_NETWORK_PHYSICAL_NAME_INFORMATION
    FileIdGlobalTxDirectoryInformation, // q: FILE_ID_GLOBAL_TX_DIR_INFORMATION (requires FILE_LIST_DIRECTORY) (NtQueryDirectoryFile[Ex]) // since WIN7 // 50
    FileIsRemoteDeviceInformation, // q: FILE_IS_REMOTE_DEVICE_INFORMATION (requires FILE_READ_ATTRIBUTES)
    FileUnusedInformation,
    FileNumaNodeInformation, // q: FILE_NUMA_NODE_INFORMATION
    FileStandardLinkInformation, // q: FILE_STANDARD_LINK_INFORMATION
    FileRemoteProtocolInformation, // q: FILE_REMOTE_PROTOCOL_INFORMATION
    FileRenameInformationBypassAccessCheck, // (kernel-mode only); s: FILE_RENAME_INFORMATION // since WIN8
    FileLinkInformationBypassAccessCheck, // (kernel-mode only); s: FILE_LINK_INFORMATION
    FileVolumeNameInformation, // q: FILE_VOLUME_NAME_INFORMATION
    FileIdInformation, // q: FILE_ID_INFORMATION
    FileIdExtdDirectoryInformation, // q: FILE_ID_EXTD_DIR_INFORMATION (requires FILE_LIST_DIRECTORY) (NtQueryDirectoryFile[Ex]) // 60
    FileReplaceCompletionInformation, // s: FILE_COMPLETION_INFORMATION // since WINBLUE
    FileHardLinkFullIdInformation, // q: FILE_LINK_ENTRY_FULL_ID_INFORMATION // FILE_LINKS_FULL_ID_INFORMATION
    FileIdExtdBothDirectoryInformation, // q: FILE_ID_EXTD_BOTH_DIR_INFORMATION (requires FILE_LIST_DIRECTORY) (NtQueryDirectoryFile[Ex]) // since THRESHOLD
    FileDispositionInformationEx, // s: FILE_DISPOSITION_INFO_EX (requires DELETE) // since REDSTONE
    FileRenameInformationEx, // s: FILE_RENAME_INFORMATION_EX
    FileRenameInformationExBypassAccessCheck, // (kernel-mode only); s: FILE_RENAME_INFORMATION_EX
    FileDesiredStorageClassInformation, // q; s: FILE_DESIRED_STORAGE_CLASS_INFORMATION (q: requires FILE_READ_ATTRIBUTES; s: requires FILE_WRITE_ATTRIBUTES) // since REDSTONE2
    FileStatInformation, // q: FILE_STAT_INFORMATION (requires FILE_READ_ATTRIBUTES)
    FileMemoryPartitionInformation, // s: FILE_MEMORY_PARTITION_INFORMATION // since REDSTONE3
    FileStatLxInformation, // q: FILE_STAT_LX_INFORMATION (requires FILE_READ_ATTRIBUTES and FILE_READ_EA) // since REDSTONE4 // 70
    FileCaseSensitiveInformation, // q; s: FILE_CASE_SENSITIVE_INFORMATION (q: requires FILE_READ_ATTRIBUTES; s: requires FILE_WRITE_ATTRIBUTES)
    FileLinkInformationEx, // s: FILE_LINK_INFORMATION_EX // since REDSTONE5
    FileLinkInformationExBypassAccessCheck, // (kernel-mode only); s: FILE_LINK_INFORMATION_EX
    FileStorageReserveIdInformation, // q; s: FILE_STORAGE_RESERVE_ID_INFORMATION (q: requires FILE_READ_ATTRIBUTES; s: requires FILE_WRITE_ATTRIBUTES)
    FileCaseSensitiveInformationForceAccessCheck, // q; s: FILE_CASE_SENSITIVE_INFORMATION
    FileKnownFolderInformation, // q; s: FILE_KNOWN_FOLDER_INFORMATION (q: requires FILE_READ_ATTRIBUTES; s: requires FILE_WRITE_ATTRIBUTES) // since WIN11
    FileStatBasicInformation, // since 23H2
    FileId64ExtdDirectoryInformation,
    FileId64ExtdBothDirectoryInformation,
    FileIdAllExtdDirectoryInformation,
    FileIdAllExtdBothDirectoryInformation,
    FileMaximumInformation
} FILE_INFORMATION_CLASS, *PFILE_INFORMATION_CLASS;

#endif

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This enumeration is documented in Windows Driver Kit.


Enumeration type FILE_INFORMATION_CLASS defines informational classes for File Objects. It's used by NtQueryInformationFile, NtQueryDirectoryFile and NtSetInformationFile functions.

FileDirectoryInformation=1

FileFullDirectoryInformation

FileBothDirectoryInformation

FileBasicInformation

FileStandardInformation

FileInternalInformation

FileEaInformation

FileAccessInformation

// 8 FILE_ACCESS_INFORMATION 0x04 NtQueryInformationFile

FileNameInformation

FileRenameInformation

FileLinkInformation

FileNamesInformation

FileDispositionInformation

FilePositionInformation

FileFullEaInformation

// 15 FILE_FULL_EA_INFORMATION ??? ???

FileModeInformation

// 16 FILE_MODE_INFORMATION 0x04 0x04 NtQueryInformationFile

FileAlignmentInformation

// 17 FILE_ALIGNMENT_INFORMATION 0x04 NtQueryInformationFile

FileAllInformation

FileAllocationInformation

// 19 FILE_ALLOCATION_INFORMATION 0x08

FileEndOfFileInformation

FileAlternateNameInformation

FileStreamInformation

// 22 FILE_STREAM_INFORMATION 0x20 NtQueryInformationFile

FilePipeInformation

// 23 FILE_PIPE_INFORMATION 0x08 0x08 NtQueryInformationFile

FilePipeLocalInformation

// 24 FILE_PIPE_LOCAL_INFORMATION 0x28 NtQueryInformationFile

FilePipeRemoteInformation

// 25 FILE_PIPE_REMOTE_INFORMATION 0x10 0x10 NtQueryInformationFile

FileMailslotQueryInformation

// 26 FILE_MAILSLOT_QUERY_INFORMATION 0x18 NtQueryInformationFile

FileMailslotSetInformation

// 27 FILE_MAILSLOT_SET_INFORMATION 0x04

FileCompressionInformation

// 28 FILE_COMPRESSION_INFORMATION 0x10 NtQueryInformationFile

FileCopyOnWriteInformation

// 29 FILE_COPY_ON_WRITE_INFORMATION 0x10

FileCompletionInformation

FileMoveClusterInformation

// 31 0x10

FileQuotaInformation

// 32 FILE_QUOTA_INFORMATION 0x10 -> FileOleClassIdInformation

FileReparsePointInformation

// 33 0x08 -> FileOleStateBitsInformation

FileNetworkOpenInformation

FileObjectIdInformation

// 35 FILE_ATTRIBUTE_TAG_INFORMATION 0x14

FileTrackingInformation

// 36 0xC0 NtQueryInformationFile -> FileOleAllInformation

FileOleDirectoryInformation

// 37 0x60 NtQueryDirectoryFile

FileContentIndexInformation

// 38 0x01

FileInheritContentIndexInformation

// 39 0x01

FileOleInformation

// 40 0x38 0x38 NtQueryInformationFile

FileMaximumInformation

// 41

Documented by

See also