#ifndef _NTIOAPI_H
#define _NTIOAPI_H

// Create disposition

#define FILE_SUPERSEDE 0x00000000
#define FILE_OPEN 0x00000001
#define FILE_CREATE 0x00000002
#define FILE_OPEN_IF 0x00000003
#define FILE_OVERWRITE 0x00000004
#define FILE_OVERWRITE_IF 0x00000005
#define FILE_MAXIMUM_DISPOSITION 0x00000005

// Create/open flags

#define FILE_DIRECTORY_FILE 0x00000001
#define FILE_WRITE_THROUGH 0x00000002
#define FILE_SEQUENTIAL_ONLY 0x00000004
#define FILE_NO_INTERMEDIATE_BUFFERING 0x00000008

#define FILE_SYNCHRONOUS_IO_ALERT 0x00000010
#define FILE_SYNCHRONOUS_IO_NONALERT 0x00000020
#define FILE_NON_DIRECTORY_FILE 0x00000040
#define FILE_CREATE_TREE_CONNECTION 0x00000080

#define FILE_COMPLETE_IF_OPLOCKED 0x00000100
#define FILE_NO_EA_KNOWLEDGE 0x00000200
#define FILE_OPEN_FOR_RECOVERY 0x00000400
#define FILE_RANDOM_ACCESS 0x00000800

#define FILE_DELETE_ON_CLOSE 0x00001000
#define FILE_OPEN_BY_FILE_ID 0x00002000
#define FILE_OPEN_FOR_BACKUP_INTENT 0x00004000
#define FILE_NO_COMPRESSION 0x00008000
#if (PHNT_VERSION >= PHNT_WIN7)
#define FILE_OPEN_REQUIRING_OPLOCK 0x00010000
#define FILE_DISALLOW_EXCLUSIVE 0x00020000
#endif
#if (PHNT_VERSION >= PHNT_WIN8)
#define FILE_SESSION_AWARE 0x00040000
#endif

#define FILE_RESERVE_OPFILTER 0x00100000
#define FILE_OPEN_REPARSE_POINT 0x00200000
#define FILE_OPEN_NO_RECALL 0x00400000
#define FILE_OPEN_FOR_FREE_SPACE_QUERY 0x00800000

#define FILE_COPY_STRUCTURED_STORAGE 0x00000041
#define FILE_STRUCTURED_STORAGE 0x00000441

// I/O status information values for NtCreateFile/NtOpenFile

#define FILE_SUPERSEDED 0x00000000
#define FILE_OPENED 0x00000001
#define FILE_CREATED 0x00000002
#define FILE_OVERWRITTEN 0x00000003
#define FILE_EXISTS 0x00000004
#define FILE_DOES_NOT_EXIST 0x00000005

// Special ByteOffset parameters

#define FILE_WRITE_TO_END_OF_FILE 0xffffffff
#define FILE_USE_FILE_POINTER_POSITION 0xfffffffe

// Alignment requirement values

#define FILE_BYTE_ALIGNMENT 0x00000000
#define FILE_WORD_ALIGNMENT 0x00000001
#define FILE_LONG_ALIGNMENT 0x00000003
#define FILE_QUAD_ALIGNMENT 0x00000007
#define FILE_OCTA_ALIGNMENT 0x0000000f
#define FILE_32_BYTE_ALIGNMENT 0x0000001f
#define FILE_64_BYTE_ALIGNMENT 0x0000003f
#define FILE_128_BYTE_ALIGNMENT 0x0000007f
#define FILE_256_BYTE_ALIGNMENT 0x000000ff
#define FILE_512_BYTE_ALIGNMENT 0x000001ff

// Maximum length of a filename string

#define MAXIMUM_FILENAME_LENGTH 256

// Extended attributes

#define FILE_NEED_EA 0x00000080

#define FILE_EA_TYPE_BINARY 0xfffe
#define FILE_EA_TYPE_ASCII 0xfffd
#define FILE_EA_TYPE_BITMAP 0xfffb
#define FILE_EA_TYPE_METAFILE 0xfffa
#define FILE_EA_TYPE_ICON 0xfff9
#define FILE_EA_TYPE_EA 0xffee
#define FILE_EA_TYPE_MVMT 0xffdf
#define FILE_EA_TYPE_MVST 0xffde
#define FILE_EA_TYPE_ASN1 0xffdd
#define FILE_EA_TYPE_FAMILY_IDS 0xff01

// Device characteristics

#define FILE_REMOVABLE_MEDIA 0x00000001
#define FILE_READ_ONLY_DEVICE 0x00000002
#define FILE_FLOPPY_DISKETTE 0x00000004
#define FILE_WRITE_ONCE_MEDIA 0x00000008
#define FILE_REMOTE_DEVICE 0x00000010
#define FILE_DEVICE_IS_MOUNTED 0x00000020
#define FILE_VIRTUAL_VOLUME 0x00000040
#define FILE_AUTOGENERATED_DEVICE_NAME 0x00000080
#define FILE_DEVICE_SECURE_OPEN 0x00000100
#define FILE_CHARACTERISTIC_PNP_DEVICE 0x00000800
#define FILE_CHARACTERISTIC_TS_DEVICE 0x00001000
#define FILE_CHARACTERISTIC_WEBDAV_DEVICE 0x00002000
#define FILE_CHARACTERISTIC_CSV 0x00010000
#define FILE_DEVICE_ALLOW_APPCONTAINER_TRAVERSAL 0x00020000
#define FILE_PORTABLE_DEVICE 0x00040000

// Named pipe values

// NamedPipeType for NtCreateNamedPipeFile
#define FILE_PIPE_BYTE_STREAM_TYPE 0x00000000
#define FILE_PIPE_MESSAGE_TYPE 0x00000001
#define FILE_PIPE_ACCEPT_REMOTE_CLIENTS 0x00000000
#define FILE_PIPE_REJECT_REMOTE_CLIENTS 0x00000002
#define FILE_PIPE_TYPE_VALID_MASK 0x00000003

// CompletionMode for NtCreateNamedPipeFile
#define FILE_PIPE_QUEUE_OPERATION 0x00000000
#define FILE_PIPE_COMPLETE_OPERATION 0x00000001

// ReadMode for NtCreateNamedPipeFile
#define FILE_PIPE_BYTE_STREAM_MODE 0x00000000
#define FILE_PIPE_MESSAGE_MODE 0x00000001

// NamedPipeConfiguration for NtQueryInformationFile
#define FILE_PIPE_INBOUND 0x00000000
#define FILE_PIPE_OUTBOUND 0x00000001
#define FILE_PIPE_FULL_DUPLEX 0x00000002

// NamedPipeState for NtQueryInformationFile
#define FILE_PIPE_DISCONNECTED_STATE 0x00000001
#define FILE_PIPE_LISTENING_STATE 0x00000002
#define FILE_PIPE_CONNECTED_STATE 0x00000003
#define FILE_PIPE_CLOSING_STATE 0x00000004

// NamedPipeEnd for NtQueryInformationFile
#define FILE_PIPE_CLIENT_END 0x00000000
#define FILE_PIPE_SERVER_END 0x00000001

// Mailslot values

#define MAILSLOT_SIZE_AUTO 0

typedef struct _IO_STATUS_BLOCK
{
    union
    {
        NTSTATUS Status;
        PVOID Pointer;
    };
    ULONG_PTR Information;
} IO_STATUS_BLOCK, *PIO_STATUS_BLOCK;

typedef VOID (NTAPI *PIO_APC_ROUTINE)(
    _In_ PVOID ApcContext,
    _In_ PIO_STATUS_BLOCK IoStatusBlock,
    _In_ ULONG Reserved
    );

// private
typedef struct _FILE_IO_COMPLETION_INFORMATION
{
    PVOID KeyContext;
    PVOID ApcContext;
    IO_STATUS_BLOCK IoStatusBlock;
} FILE_IO_COMPLETION_INFORMATION, *PFILE_IO_COMPLETION_INFORMATION;

typedef enum _FILE_INFORMATION_CLASS
{
    FileDirectoryInformation = 1, // FILE_DIRECTORY_INFORMATION
    FileFullDirectoryInformation, // FILE_FULL_DIR_INFORMATION
    FileBothDirectoryInformation, // FILE_BOTH_DIR_INFORMATION
    FileBasicInformation, // FILE_BASIC_INFORMATION
    FileStandardInformation, // FILE_STANDARD_INFORMATION
    FileInternalInformation, // FILE_INTERNAL_INFORMATION
    FileEaInformation, // FILE_EA_INFORMATION
    FileAccessInformation, // FILE_ACCESS_INFORMATION
    FileNameInformation, // FILE_NAME_INFORMATION
    FileRenameInformation, // FILE_RENAME_INFORMATION // 10
    FileLinkInformation, // FILE_LINK_INFORMATION
    FileNamesInformation, // FILE_NAMES_INFORMATION
    FileDispositionInformation, // FILE_DISPOSITION_INFORMATION
    FilePositionInformation, // FILE_POSITION_INFORMATION
    FileFullEaInformation, // FILE_FULL_EA_INFORMATION
    FileModeInformation, // FILE_MODE_INFORMATION
    FileAlignmentInformation, // FILE_ALIGNMENT_INFORMATION
    FileAllInformation, // FILE_ALL_INFORMATION
    FileAllocationInformation, // FILE_ALLOCATION_INFORMATION
    FileEndOfFileInformation, // FILE_END_OF_FILE_INFORMATION // 20
    FileAlternateNameInformation, // FILE_NAME_INFORMATION
    FileStreamInformation, // FILE_STREAM_INFORMATION
    FilePipeInformation, // FILE_PIPE_INFORMATION
    FilePipeLocalInformation, // FILE_PIPE_LOCAL_INFORMATION
    FilePipeRemoteInformation, // FILE_PIPE_REMOTE_INFORMATION
    FileMailslotQueryInformation, // FILE_MAILSLOT_QUERY_INFORMATION
    FileMailslotSetInformation, // FILE_MAILSLOT_SET_INFORMATION
    FileCompressionInformation, // FILE_COMPRESSION_INFORMATION
    FileObjectIdInformation, // FILE_OBJECTID_INFORMATION
    FileCompletionInformation, // FILE_COMPLETION_INFORMATION // 30
    FileMoveClusterInformation, // FILE_MOVE_CLUSTER_INFORMATION
    FileQuotaInformation, // FILE_QUOTA_INFORMATION
    FileReparsePointInformation, // FILE_REPARSE_POINT_INFORMATION
    FileNetworkOpenInformation, // FILE_NETWORK_OPEN_INFORMATION
    FileAttributeTagInformation, // FILE_ATTRIBUTE_TAG_INFORMATION
    FileTrackingInformation, // FILE_TRACKING_INFORMATION
    FileIdBothDirectoryInformation, // FILE_ID_BOTH_DIR_INFORMATION
    FileIdFullDirectoryInformation, // FILE_ID_FULL_DIR_INFORMATION
    FileValidDataLengthInformation, // FILE_VALID_DATA_LENGTH_INFORMATION
    FileShortNameInformation, // FILE_NAME_INFORMATION // 40
    FileIoCompletionNotificationInformation, // FILE_IO_COMPLETION_NOTIFICATION_INFORMATION // since VISTA
    FileIoStatusBlockRangeInformation, // FILE_IOSTATUSBLOCK_RANGE_INFORMATION
    FileIoPriorityHintInformation, // FILE_IO_PRIORITY_HINT_INFORMATION
    FileSfioReserveInformation, // FILE_SFIO_RESERVE_INFORMATION
    FileSfioVolumeInformation, // FILE_SFIO_VOLUME_INFORMATION
    FileHardLinkInformation, // FILE_LINKS_INFORMATION
    FileProcessIdsUsingFileInformation, // FILE_PROCESS_IDS_USING_FILE_INFORMATION
    FileNormalizedNameInformation, // FILE_NAME_INFORMATION
    FileNetworkPhysicalNameInformation, // FILE_NETWORK_PHYSICAL_NAME_INFORMATION
    FileIdGlobalTxDirectoryInformation, // FILE_ID_GLOBAL_TX_DIR_INFORMATION // since WIN7 // 50
    FileIsRemoteDeviceInformation, // FILE_IS_REMOTE_DEVICE_INFORMATION
    FileUnusedInformation,
    FileNumaNodeInformation, // FILE_NUMA_NODE_INFORMATION
    FileStandardLinkInformation, // FILE_STANDARD_LINK_INFORMATION
    FileRemoteProtocolInformation, // FILE_REMOTE_PROTOCOL_INFORMATION
    FileRenameInformationBypassAccessCheck, // (kernel-mode only); FILE_RENAME_INFORMATION // since WIN8
    FileLinkInformationBypassAccessCheck, // (kernel-mode only); FILE_LINK_INFORMATION
    FileVolumeNameInformation, // FILE_VOLUME_NAME_INFORMATION
    FileIdInformation, // FILE_ID_INFORMATION
    FileIdExtdDirectoryInformation, // FILE_ID_EXTD_DIR_INFORMATION
    FileReplaceCompletionInformation, // FILE_COMPLETION_INFORMATION // since WINBLUE
    FileHardLinkFullIdInformation, // FILE_LINK_ENTRY_FULL_ID_INFORMATION
    FileIdExtdBothDirectoryInformation, // FILE_ID_EXTD_BOTH_DIR_INFORMATION // since THRESHOLD
    FileDispositionInformationEx, // FILE_DISPOSITION_INFO_EX // since REDSTONE
    FileRenameInformationEx,
    FileRenameInformationExBypassAccessCheck,
    FileDesiredStorageClassInformation, // FILE_DESIRED_STORAGE_CLASS_INFORMATION // since REDSTONE2
    FileStatInformation, // FILE_STAT_INFORMATION
    FileMemoryPartitionInformation, // FILE_MEMORY_PARTITION_INFORMATION // since REDSTONE3
    FileMaximumInformation
} FILE_INFORMATION_CLASS, *PFILE_INFORMATION_CLASS;

// NtQueryInformationFile/NtSetInformationFile types

typedef struct _FILE_BASIC_INFORMATION
{
    LARGE_INTEGER CreationTime;
    LARGE_INTEGER LastAccessTime;
    LARGE_INTEGER LastWriteTime;
    LARGE_INTEGER ChangeTime;
    ULONG FileAttributes;
} FILE_BASIC_INFORMATION, *PFILE_BASIC_INFORMATION;

typedef struct _FILE_STANDARD_INFORMATION
{
    LARGE_INTEGER AllocationSize;
    LARGE_INTEGER EndOfFile;
    ULONG NumberOfLinks;
    BOOLEAN DeletePending;
    BOOLEAN Directory;
} FILE_STANDARD_INFORMATION, *PFILE_STANDARD_INFORMATION;

typedef struct _FILE_STANDARD_INFORMATION_EX
{
    LARGE_INTEGER AllocationSize;
    LARGE_INTEGER EndOfFile;
    ULONG NumberOfLinks;
    BOOLEAN DeletePending;
    BOOLEAN Directory;
    BOOLEAN AlternateStream;
    BOOLEAN MetadataAttribute;
} FILE_STANDARD_INFORMATION_EX, *PFILE_STANDARD_INFORMATION_EX;

typedef struct _FILE_INTERNAL_INFORMATION
{
    LARGE_INTEGER IndexNumber;
} FILE_INTERNAL_INFORMATION, *PFILE_INTERNAL_INFORMATION;

typedef struct _FILE_EA_INFORMATION
{
    ULONG EaSize;
} FILE_EA_INFORMATION, *PFILE_EA_INFORMATION;

typedef struct _FILE_ACCESS_INFORMATION
{
    ACCESS_MASK AccessFlags;
} FILE_ACCESS_INFORMATION, *PFILE_ACCESS_INFORMATION;

typedef struct _FILE_POSITION_INFORMATION
{
    LARGE_INTEGER CurrentByteOffset;
} FILE_POSITION_INFORMATION, *PFILE_POSITION_INFORMATION;

typedef struct _FILE_MODE_INFORMATION
{
    ULONG Mode;
} FILE_MODE_INFORMATION, *PFILE_MODE_INFORMATION;

typedef struct _FILE_ALIGNMENT_INFORMATION
{
    ULONG AlignmentRequirement;
} FILE_ALIGNMENT_INFORMATION, *PFILE_ALIGNMENT_INFORMATION;

typedef struct _FILE_NAME_INFORMATION
{
    ULONG FileNameLength;
    WCHAR FileName[1];
} FILE_NAME_INFORMATION, *PFILE_NAME_INFORMATION;

typedef struct _FILE_ALL_INFORMATION
{
    FILE_BASIC_INFORMATION BasicInformation;
    FILE_STANDARD_INFORMATION StandardInformation;
    FILE_INTERNAL_INFORMATION InternalInformation;
    FILE_EA_INFORMATION EaInformation;
    FILE_ACCESS_INFORMATION AccessInformation;
    FILE_POSITION_INFORMATION PositionInformation;
    FILE_MODE_INFORMATION ModeInformation;
    FILE_ALIGNMENT_INFORMATION AlignmentInformation;
    FILE_NAME_INFORMATION NameInformation;
} FILE_ALL_INFORMATION, *PFILE_ALL_INFORMATION;

typedef struct _FILE_NETWORK_OPEN_INFORMATION
{
    LARGE_INTEGER CreationTime;
    LARGE_INTEGER LastAccessTime;
    LARGE_INTEGER LastWriteTime;
    LARGE_INTEGER ChangeTime;
    LARGE_INTEGER AllocationSize;
    LARGE_INTEGER EndOfFile;
    ULONG FileAttributes;
} FILE_NETWORK_OPEN_INFORMATION, *PFILE_NETWORK_OPEN_INFORMATION;

typedef struct _FILE_ATTRIBUTE_TAG_INFORMATION
{
    ULONG FileAttributes;
    ULONG ReparseTag;
} FILE_ATTRIBUTE_TAG_INFORMATION, *PFILE_ATTRIBUTE_TAG_INFORMATION;

typedef struct _FILE_ALLOCATION_INFORMATION
{
    LARGE_INTEGER AllocationSize;
} FILE_ALLOCATION_INFORMATION, *PFILE_ALLOCATION_INFORMATION;

typedef struct _FILE_COMPRESSION_INFORMATION
{
    LARGE_INTEGER CompressedFileSize;
    USHORT CompressionFormat;
    UCHAR CompressionUnitShift;
    UCHAR ChunkShift;
    UCHAR ClusterShift;
    UCHAR Reserved[3];
} FILE_COMPRESSION_INFORMATION, *PFILE_COMPRESSION_INFORMATION;

typedef struct _FILE_DISPOSITION_INFORMATION
{
    BOOLEAN DeleteFile;
} FILE_DISPOSITION_INFORMATION, *PFILE_DISPOSITION_INFORMATION;

typedef struct _FILE_END_OF_FILE_INFORMATION
{
    LARGE_INTEGER EndOfFile;
} FILE_END_OF_FILE_INFORMATION, *PFILE_END_OF_FILE_INFORMATION;

typedef struct _FILE_VALID_DATA_LENGTH_INFORMATION
{
    LARGE_INTEGER ValidDataLength;
} FILE_VALID_DATA_LENGTH_INFORMATION, *PFILE_VALID_DATA_LENGTH_INFORMATION;

typedef struct _FILE_LINK_INFORMATION
{
    BOOLEAN ReplaceIfExists;
    HANDLE RootDirectory;
    ULONG FileNameLength;
    WCHAR FileName[1];
} FILE_LINK_INFORMATION, *PFILE_LINK_INFORMATION;

typedef struct _FILE_MOVE_CLUSTER_INFORMATION
{
    ULONG ClusterCount;
    HANDLE RootDirectory;
    ULONG FileNameLength;
    WCHAR FileName[1];
} FILE_MOVE_CLUSTER_INFORMATION, *PFILE_MOVE_CLUSTER_INFORMATION;

typedef struct _FILE_RENAME_INFORMATION
{
    BOOLEAN ReplaceIfExists;
    HANDLE RootDirectory;
    ULONG FileNameLength;
    WCHAR FileName[1];
} FILE_RENAME_INFORMATION, *PFILE_RENAME_INFORMATION;

typedef struct _FILE_STREAM_INFORMATION
{
    ULONG NextEntryOffset;
    ULONG StreamNameLength;
    LARGE_INTEGER StreamSize;
    LARGE_INTEGER StreamAllocationSize;
    WCHAR StreamName[1];
} FILE_STREAM_INFORMATION, *PFILE_STREAM_INFORMATION;

typedef struct _FILE_TRACKING_INFORMATION
{
    HANDLE DestinationFile;
    ULONG ObjectInformationLength;
    CHAR ObjectInformation[1];
} FILE_TRACKING_INFORMATION, *PFILE_TRACKING_INFORMATION;

typedef struct _FILE_COMPLETION_INFORMATION
{
    HANDLE Port;
    PVOID Key;
} FILE_COMPLETION_INFORMATION, *PFILE_COMPLETION_INFORMATION;

typedef struct _FILE_PIPE_INFORMATION
{
     ULONG ReadMode;
     ULONG CompletionMode;
} FILE_PIPE_INFORMATION, *PFILE_PIPE_INFORMATION;

typedef struct _FILE_PIPE_LOCAL_INFORMATION
{
     ULONG NamedPipeType;
     ULONG NamedPipeConfiguration;
     ULONG MaximumInstances;
     ULONG CurrentInstances;
     ULONG InboundQuota;
     ULONG ReadDataAvailable;
     ULONG OutboundQuota;
     ULONG WriteQuotaAvailable;
     ULONG NamedPipeState;
     ULONG NamedPipeEnd;
} FILE_PIPE_LOCAL_INFORMATION, *PFILE_PIPE_LOCAL_INFORMATION;

typedef struct _FILE_PIPE_REMOTE_INFORMATION
{
     LARGE_INTEGER CollectDataTime;
     ULONG MaximumCollectionCount;
} FILE_PIPE_REMOTE_INFORMATION, *PFILE_PIPE_REMOTE_INFORMATION;

typedef struct _FILE_MAILSLOT_QUERY_INFORMATION
{
    ULONG MaximumMessageSize;
    ULONG MailslotQuota;
    ULONG NextMessageSize;
    ULONG MessagesAvailable;
    LARGE_INTEGER ReadTimeout;
} FILE_MAILSLOT_QUERY_INFORMATION, *PFILE_MAILSLOT_QUERY_INFORMATION;

typedef struct _FILE_MAILSLOT_SET_INFORMATION
{
    PLARGE_INTEGER ReadTimeout;
} FILE_MAILSLOT_SET_INFORMATION, *PFILE_MAILSLOT_SET_INFORMATION;

typedef struct _FILE_REPARSE_POINT_INFORMATION
{
    LONGLONG FileReference;
    ULONG Tag;
} FILE_REPARSE_POINT_INFORMATION, *PFILE_REPARSE_POINT_INFORMATION;

typedef struct _FILE_LINK_ENTRY_INFORMATION
{
    ULONG NextEntryOffset;
    LONGLONG ParentFileId;
    ULONG FileNameLength;
    WCHAR FileName[1];
} FILE_LINK_ENTRY_INFORMATION, *PFILE_LINK_ENTRY_INFORMATION;

typedef struct _FILE_LINKS_INFORMATION
{
    ULONG BytesNeeded;
    ULONG EntriesReturned;
    FILE_LINK_ENTRY_INFORMATION Entry;
} FILE_LINKS_INFORMATION, *PFILE_LINKS_INFORMATION;

typedef struct _FILE_NETWORK_PHYSICAL_NAME_INFORMATION
{
    ULONG FileNameLength;
    WCHAR FileName[1];
} FILE_NETWORK_PHYSICAL_NAME_INFORMATION, *PFILE_NETWORK_PHYSICAL_NAME_INFORMATION;

typedef struct _FILE_STANDARD_LINK_INFORMATION
{
    ULONG NumberOfAccessibleLinks;
    ULONG TotalNumberOfLinks;
    BOOLEAN DeletePending;
    BOOLEAN Directory;
} FILE_STANDARD_LINK_INFORMATION, *PFILE_STANDARD_LINK_INFORMATION;

typedef struct _FILE_SFIO_RESERVE_INFORMATION
{
    ULONG RequestsPerPeriod;
    ULONG Period;
    BOOLEAN RetryFailures;
    BOOLEAN Discardable;
    ULONG RequestSize;
    ULONG NumOutstandingRequests;
} FILE_SFIO_RESERVE_INFORMATION, *PFILE_SFIO_RESERVE_INFORMATION;

typedef struct _FILE_SFIO_VOLUME_INFORMATION
{
    ULONG MaximumRequestsPerPeriod;
    ULONG MinimumPeriod;
    ULONG MinimumTransferSize;
} FILE_SFIO_VOLUME_INFORMATION, *PFILE_SFIO_VOLUME_INFORMATION;

typedef enum _IO_PRIORITY_HINT
{
    IoPriorityVeryLow = 0, // Defragging, content indexing and other background I/Os.
    IoPriorityLow, // Prefetching for applications.
    IoPriorityNormal, // Normal I/Os.
    IoPriorityHigh, // Used by filesystems for checkpoint I/O.
    IoPriorityCritical, // Used by memory manager. Not available for applications.
    MaxIoPriorityTypes
} IO_PRIORITY_HINT;

typedef struct _FILE_IO_PRIORITY_HINT_INFORMATION
{
    IO_PRIORITY_HINT PriorityHint;
} FILE_IO_PRIORITY_HINT_INFORMATION, *PFILE_IO_PRIORITY_HINT_INFORMATION;

typedef struct _FILE_IO_PRIORITY_HINT_INFORMATION_EX
{
    IO_PRIORITY_HINT PriorityHint;
    BOOLEAN BoostOutstanding;
} FILE_IO_PRIORITY_HINT_INFORMATION_EX, *PFILE_IO_PRIORITY_HINT_INFORMATION_EX;

#define FILE_SKIP_COMPLETION_PORT_ON_SUCCESS 0x1
#define FILE_SKIP_SET_EVENT_ON_HANDLE 0x2
#define FILE_SKIP_SET_USER_EVENT_ON_FAST_IO 0x4

typedef struct _FILE_IO_COMPLETION_NOTIFICATION_INFORMATION
{
    ULONG Flags;
} FILE_IO_COMPLETION_NOTIFICATION_INFORMATION, *PFILE_IO_COMPLETION_NOTIFICATION_INFORMATION;

typedef struct _FILE_PROCESS_IDS_USING_FILE_INFORMATION
{
    ULONG NumberOfProcessIdsInList;
    ULONG_PTR ProcessIdList[1];
} FILE_PROCESS_IDS_USING_FILE_INFORMATION, *PFILE_PROCESS_IDS_USING_FILE_INFORMATION;

typedef struct _FILE_IS_REMOTE_DEVICE_INFORMATION
{
    BOOLEAN IsRemote;
} FILE_IS_REMOTE_DEVICE_INFORMATION, *PFILE_IS_REMOTE_DEVICE_INFORMATION;

typedef struct _FILE_NUMA_NODE_INFORMATION
{
    USHORT NodeNumber;
} FILE_NUMA_NODE_INFORMATION, *PFILE_NUMA_NODE_INFORMATION;

typedef struct _FILE_IOSTATUSBLOCK_RANGE_INFORMATION
{
    PUCHAR IoStatusBlockRange;
    ULONG Length;
} FILE_IOSTATUSBLOCK_RANGE_INFORMATION, *PFILE_IOSTATUSBLOCK_RANGE_INFORMATION;

typedef struct _FILE_REMOTE_PROTOCOL_INFORMATION
{
    USHORT StructureVersion; // 1
    USHORT StructureSize;

    ULONG Protocol; // WNNC_NET_*

    USHORT ProtocolMajorVersion;
    USHORT ProtocolMinorVersion;
    USHORT ProtocolRevision;

    USHORT Reserved;

    // Generic information

    ULONG Flags;

    struct
    {
        ULONG Reserved[8];
    } GenericReserved;

    // Specific information

#if (PHNT_VERSION < PHNT_WIN8)
    struct
    {
        ULONG Reserved[16];
    } ProtocolSpecificReserved;
#else
    union
    {
        struct
        {
            struct
            {
                ULONG Capabilities;
            } Server;
            struct
            {
                ULONG Capabilities;
                ULONG CachingFlags;
            } Share;
        } Smb2;
        ULONG Reserved[16];
    } ProtocolSpecific;
#endif
} FILE_REMOTE_PROTOCOL_INFORMATION, *PFILE_REMOTE_PROTOCOL_INFORMATION;

#define CHECKSUM_ENFORCEMENT_OFF 0x00000001

typedef struct _FILE_INTEGRITY_STREAM_INFORMATION
{
    USHORT ChecksumAlgorithm;
    UCHAR ChecksumChunkShift;
    UCHAR ClusterShift;
    ULONG Flags;
} FILE_INTEGRITY_STREAM_INFORMATION, *PFILE_INTEGRITY_STREAM_INFORMATION;

typedef struct _FILE_VOLUME_NAME_INFORMATION
{
    ULONG DeviceNameLength;
    WCHAR DeviceName[1];
} FILE_VOLUME_NAME_INFORMATION, *PFILE_VOLUME_NAME_INFORMATION;

typedef struct _FILE_ID_INFORMATION
{
    ULONGLONG VolumeSerialNumber;
    FILE_ID_128 FileId;
} FILE_ID_INFORMATION, *PFILE_ID_INFORMATION;

typedef struct _FILE_ID_EXTD_DIR_INFORMATION
{
    ULONG NextEntryOffset;
    ULONG FileIndex;
    LARGE_INTEGER CreationTime;
    LARGE_INTEGER LastAccessTime;
    LARGE_INTEGER LastWriteTime;
    LARGE_INTEGER ChangeTime;
    LARGE_INTEGER EndOfFile;
    LARGE_INTEGER AllocationSize;
    ULONG FileAttributes;
    ULONG FileNameLength;
    ULONG EaSize;
    ULONG ReparsePointTag;
    FILE_ID_128 FileId;
    WCHAR FileName[1];
} FILE_ID_EXTD_DIR_INFORMATION, *PFILE_ID_EXTD_DIR_INFORMATION;

typedef struct _FILE_LINK_ENTRY_FULL_ID_INFORMATION
{
    ULONG NextEntryOffset;
    FILE_ID_128 ParentFileId;
    ULONG FileNameLength;
    WCHAR FileName[1];
} FILE_LINK_ENTRY_FULL_ID_INFORMATION, *PFILE_LINK_ENTRY_FULL_ID_INFORMATION;

typedef struct _FILE_ID_EXTD_BOTH_DIR_INFORMATION
{
    ULONG NextEntryOffset;
    ULONG FileIndex;
    LARGE_INTEGER CreationTime;
    LARGE_INTEGER LastAccessTime;
    LARGE_INTEGER LastWriteTime;
    LARGE_INTEGER ChangeTime;
    LARGE_INTEGER EndOfFile;
    LARGE_INTEGER AllocationSize;
    ULONG FileAttributes;
    ULONG FileNameLength;
    ULONG EaSize;
    ULONG ReparsePointTag;
    FILE_ID_128 FileId;
    CCHAR ShortNameLength;
    WCHAR ShortName[12];
    WCHAR FileName[1];
} FILE_ID_EXTD_BOTH_DIR_INFORMATION, *PFILE_ID_EXTD_BOTH_DIR_INFORMATION;

// private
typedef struct _FILE_STAT_INFORMATION
{
    LARGE_INTEGER FileId;
    LARGE_INTEGER CreationTime;
    LARGE_INTEGER LastAccessTime;
    LARGE_INTEGER LastWriteTime;
    LARGE_INTEGER ChangeTime;
    LARGE_INTEGER AllocationSize;
    LARGE_INTEGER EndOfFile;
    ULONG FileAttributes;
    ULONG ReparseTag;
    ULONG NumberOfLinks;
    ULONG EffectiveAccess;
} FILE_STAT_INFORMATION, *PFILE_STAT_INFORMATION;

// private
typedef struct _FILE_MEMORY_PARTITION_INFORMATION
{
    HANDLE OwnerPartitionHandle;
    union
    {
        struct
        {
            UCHAR NoCrossPartitionAccess;
            UCHAR Spare[3];
        };
        ULONG AllFlags;
    } Flags;
} FILE_MEMORY_PARTITION_INFORMATION, *PFILE_MEMORY_PARTITION_INFORMATION;

// NtQueryDirectoryFile types

typedef struct _FILE_DIRECTORY_INFORMATION
{
    ULONG NextEntryOffset;
    ULONG FileIndex;
    LARGE_INTEGER CreationTime;
    LARGE_INTEGER LastAccessTime;
    LARGE_INTEGER LastWriteTime;
    LARGE_INTEGER ChangeTime;
    LARGE_INTEGER EndOfFile;
    LARGE_INTEGER AllocationSize;
    ULONG FileAttributes;
    ULONG FileNameLength;
    WCHAR FileName[1];
} FILE_DIRECTORY_INFORMATION, *PFILE_DIRECTORY_INFORMATION;

typedef struct _FILE_FULL_DIR_INFORMATION
{
    ULONG NextEntryOffset;
    ULONG FileIndex;
    LARGE_INTEGER CreationTime;
    LARGE_INTEGER LastAccessTime;
    LARGE_INTEGER LastWriteTime;
    LARGE_INTEGER ChangeTime;
    LARGE_INTEGER EndOfFile;
    LARGE_INTEGER AllocationSize;
    ULONG FileAttributes;
    ULONG FileNameLength;
    ULONG EaSize;
    WCHAR FileName[1];
} FILE_FULL_DIR_INFORMATION, *PFILE_FULL_DIR_INFORMATION;

typedef struct _FILE_ID_FULL_DIR_INFORMATION
{
    ULONG NextEntryOffset;
    ULONG FileIndex;
    LARGE_INTEGER CreationTime;
    LARGE_INTEGER LastAccessTime;
    LARGE_INTEGER LastWriteTime;
    LARGE_INTEGER ChangeTime;
    LARGE_INTEGER EndOfFile;
    LARGE_INTEGER AllocationSize;
    ULONG FileAttributes;
    ULONG FileNameLength;
    ULONG EaSize;
    LARGE_INTEGER FileId;
    WCHAR FileName[1];
} FILE_ID_FULL_DIR_INFORMATION, *PFILE_ID_FULL_DIR_INFORMATION;

typedef struct _FILE_BOTH_DIR_INFORMATION
{
    ULONG NextEntryOffset;
    ULONG FileIndex;
    LARGE_INTEGER CreationTime;
    LARGE_INTEGER LastAccessTime;
    LARGE_INTEGER LastWriteTime;
    LARGE_INTEGER ChangeTime;
    LARGE_INTEGER EndOfFile;
    LARGE_INTEGER AllocationSize;
    ULONG FileAttributes;
    ULONG FileNameLength;
    ULONG EaSize;
    CCHAR ShortNameLength;
    WCHAR ShortName[12];
    WCHAR FileName[1];
} FILE_BOTH_DIR_INFORMATION, *PFILE_BOTH_DIR_INFORMATION;

typedef struct _FILE_ID_BOTH_DIR_INFORMATION
{
    ULONG NextEntryOffset;
    ULONG FileIndex;
    LARGE_INTEGER CreationTime;
    LARGE_INTEGER LastAccessTime;
    LARGE_INTEGER LastWriteTime;
    LARGE_INTEGER ChangeTime;
    LARGE_INTEGER EndOfFile;
    LARGE_INTEGER AllocationSize;
    ULONG FileAttributes;
    ULONG FileNameLength;
    ULONG EaSize;
    CCHAR ShortNameLength;
    WCHAR ShortName[12];
    LARGE_INTEGER FileId;
    WCHAR FileName[1];
} FILE_ID_BOTH_DIR_INFORMATION, *PFILE_ID_BOTH_DIR_INFORMATION;

typedef struct _FILE_NAMES_INFORMATION
{
    ULONG NextEntryOffset;
    ULONG FileIndex;
    ULONG FileNameLength;
    WCHAR FileName[1];
} FILE_NAMES_INFORMATION, *PFILE_NAMES_INFORMATION;

typedef struct _FILE_ID_GLOBAL_TX_DIR_INFORMATION
{
    ULONG NextEntryOffset;
    ULONG FileIndex;
    LARGE_INTEGER CreationTime;
    LARGE_INTEGER LastAccessTime;
    LARGE_INTEGER LastWriteTime;
    LARGE_INTEGER ChangeTime;
    LARGE_INTEGER EndOfFile;
    LARGE_INTEGER AllocationSize;
    ULONG FileAttributes;
    ULONG FileNameLength;
    LARGE_INTEGER FileId;
    GUID LockingTransactionId;
    ULONG TxInfoFlags;
    WCHAR FileName[1];
} FILE_ID_GLOBAL_TX_DIR_INFORMATION, *PFILE_ID_GLOBAL_TX_DIR_INFORMATION;

#define FILE_ID_GLOBAL_TX_DIR_INFO_FLAG_WRITELOCKED 0x00000001
#define FILE_ID_GLOBAL_TX_DIR_INFO_FLAG_VISIBLE_TO_TX 0x00000002
#define FILE_ID_GLOBAL_TX_DIR_INFO_FLAG_VISIBLE_OUTSIDE_TX 0x00000004

typedef struct _FILE_OBJECTID_INFORMATION
{
    LONGLONG FileReference;
    UCHAR ObjectId[16];
    union
    {
        struct
        {
            UCHAR BirthVolumeId[16];
            UCHAR BirthObjectId[16];
            UCHAR DomainId[16];
        };
        UCHAR ExtendedInfo[48];
    };
} FILE_OBJECTID_INFORMATION, *PFILE_OBJECTID_INFORMATION;

// NtQueryEaFile/NtSetEaFile types

typedef struct _FILE_FULL_EA_INFORMATION
{
    ULONG NextEntryOffset;
    UCHAR Flags;
    UCHAR EaNameLength;
    USHORT EaValueLength;
    CHAR EaName[1];
} FILE_FULL_EA_INFORMATION, *PFILE_FULL_EA_INFORMATION;

typedef struct _FILE_GET_EA_INFORMATION
{
    ULONG NextEntryOffset;
    UCHAR EaNameLength;
    CHAR EaName[1];
} FILE_GET_EA_INFORMATION, *PFILE_GET_EA_INFORMATION;

// NtQueryQuotaInformationFile/NtSetQuotaInformationFile types

typedef struct _FILE_GET_QUOTA_INFORMATION
{
    ULONG NextEntryOffset;
    ULONG SidLength;
    SID Sid;
} FILE_GET_QUOTA_INFORMATION, *PFILE_GET_QUOTA_INFORMATION;

typedef struct _FILE_QUOTA_INFORMATION
{
    ULONG NextEntryOffset;
    ULONG SidLength;
    LARGE_INTEGER ChangeTime;
    LARGE_INTEGER QuotaUsed;
    LARGE_INTEGER QuotaThreshold;
    LARGE_INTEGER QuotaLimit;
    SID Sid;
} FILE_QUOTA_INFORMATION, *PFILE_QUOTA_INFORMATION;

typedef enum _FSINFOCLASS
{
    FileFsVolumeInformation = 1, // FILE_FS_VOLUME_INFORMATION
    FileFsLabelInformation, // FILE_FS_LABEL_INFORMATION
    FileFsSizeInformation, // FILE_FS_SIZE_INFORMATION
    FileFsDeviceInformation, // FILE_FS_DEVICE_INFORMATION
    FileFsAttributeInformation, // FILE_FS_ATTRIBUTE_INFORMATION
    FileFsControlInformation, // FILE_FS_CONTROL_INFORMATION
    FileFsFullSizeInformation, // FILE_FS_FULL_SIZE_INFORMATION
    FileFsObjectIdInformation, // FILE_FS_OBJECTID_INFORMATION
    FileFsDriverPathInformation, // FILE_FS_DRIVER_PATH_INFORMATION
    FileFsVolumeFlagsInformation, // FILE_FS_VOLUME_FLAGS_INFORMATION
    FileFsSectorSizeInformation, // FILE_FS_SECTOR_SIZE_INFORMATION // since WIN8
    FileFsDataCopyInformation, // FILE_FS_DATA_COPY_INFORMATION
    FileFsMetadataSizeInformation, // FILE_FS_METADATA_SIZE_INFORMATION // since THRESHOLD
    FileFsMaximumInformation
} FSINFOCLASS, *PFSINFOCLASS;

// NtQueryVolumeInformation/NtSetVolumeInformation types

typedef struct _FILE_FS_LABEL_INFORMATION
{
    ULONG VolumeLabelLength;
    WCHAR VolumeLabel[1];
} FILE_FS_LABEL_INFORMATION, *PFILE_FS_LABEL_INFORMATION;

typedef struct _FILE_FS_VOLUME_INFORMATION
{
    LARGE_INTEGER VolumeCreationTime;
    ULONG VolumeSerialNumber;
    ULONG VolumeLabelLength;
    BOOLEAN SupportsObjects;
    WCHAR VolumeLabel[1];
} FILE_FS_VOLUME_INFORMATION, *PFILE_FS_VOLUME_INFORMATION;

typedef struct _FILE_FS_SIZE_INFORMATION
{
    LARGE_INTEGER TotalAllocationUnits;
    LARGE_INTEGER AvailableAllocationUnits;
    ULONG SectorsPerAllocationUnit;
    ULONG BytesPerSector;
} FILE_FS_SIZE_INFORMATION, *PFILE_FS_SIZE_INFORMATION;

// private
typedef struct _FILE_FS_CONTROL_INFORMATION
{
    LARGE_INTEGER FreeSpaceStartFiltering;
    LARGE_INTEGER FreeSpaceThreshold;
    LARGE_INTEGER FreeSpaceStopFiltering;
    LARGE_INTEGER DefaultQuotaThreshold;
    LARGE_INTEGER DefaultQuotaLimit;
    ULONG FileSystemControlFlags;
} FILE_FS_CONTROL_INFORMATION, *PFILE_FS_CONTROL_INFORMATION;

typedef struct _FILE_FS_FULL_SIZE_INFORMATION
{
    LARGE_INTEGER TotalAllocationUnits;
    LARGE_INTEGER CallerAvailableAllocationUnits;
    LARGE_INTEGER ActualAvailableAllocationUnits;
    ULONG SectorsPerAllocationUnit;
    ULONG BytesPerSector;
} FILE_FS_FULL_SIZE_INFORMATION, *PFILE_FS_FULL_SIZE_INFORMATION;

typedef struct _FILE_FS_OBJECTID_INFORMATION
{
    UCHAR ObjectId[16];
    UCHAR ExtendedInfo[48];
} FILE_FS_OBJECTID_INFORMATION, *PFILE_FS_OBJECTID_INFORMATION;

typedef struct _FILE_FS_DEVICE_INFORMATION
{
    DEVICE_TYPE DeviceType;
    ULONG Characteristics;
} FILE_FS_DEVICE_INFORMATION, *PFILE_FS_DEVICE_INFORMATION;

typedef struct _FILE_FS_ATTRIBUTE_INFORMATION
{
    ULONG FileSystemAttributes;
    LONG MaximumComponentNameLength;
    ULONG FileSystemNameLength;
    WCHAR FileSystemName[1];
} FILE_FS_ATTRIBUTE_INFORMATION, *PFILE_FS_ATTRIBUTE_INFORMATION;

typedef struct _FILE_FS_DRIVER_PATH_INFORMATION
{
    BOOLEAN DriverInPath;
    ULONG DriverNameLength;
    WCHAR DriverName[1];
} FILE_FS_DRIVER_PATH_INFORMATION, *PFILE_FS_DRIVER_PATH_INFORMATION;

typedef struct _FILE_FS_VOLUME_FLAGS_INFORMATION
{
    ULONG Flags;
} FILE_FS_VOLUME_FLAGS_INFORMATION, *PFILE_FS_VOLUME_FLAGS_INFORMATION;

#define SSINFO_FLAGS_ALIGNED_DEVICE 0x00000001
#define SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE 0x00000002

// If set for Sector and Partition fields, alignment is not known.
#define SSINFO_OFFSET_UNKNOWN 0xffffffff

typedef struct _FILE_FS_SECTOR_SIZE_INFORMATION
{
    ULONG LogicalBytesPerSector;
    ULONG PhysicalBytesPerSectorForAtomicity;
    ULONG PhysicalBytesPerSectorForPerformance;
    ULONG FileSystemEffectivePhysicalBytesPerSectorForAtomicity;
    ULONG Flags;
    ULONG ByteOffsetForSectorAlignment;
    ULONG ByteOffsetForPartitionAlignment;
} FILE_FS_SECTOR_SIZE_INFORMATION, *PFILE_FS_SECTOR_SIZE_INFORMATION;

// private
typedef struct _FILE_FS_DATA_COPY_INFORMATION
{
    ULONG NumberOfCopies;
} FILE_FS_DATA_COPY_INFORMATION, *PFILE_FS_DATA_COPY_INFORMATION;

typedef struct _FILE_FS_METADATA_SIZE_INFORMATION
{
    LARGE_INTEGER TotalMetadataAllocationUnits;
    ULONG SectorsPerAllocationUnit;
    ULONG BytesPerSector;
} FILE_FS_METADATA_SIZE_INFORMATION, *PFILE_FS_METADATA_SIZE_INFORMATION;

// System calls

NTSYSCALLAPI
NTSTATUS
NTAPI
NtCreateFile(
    _Out_ PHANDLE FileHandle,
    _In_ ACCESS_MASK DesiredAccess,
    _In_ POBJECT_ATTRIBUTES ObjectAttributes,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _In_opt_ PLARGE_INTEGER AllocationSize,
    _In_ ULONG FileAttributes,
    _In_ ULONG ShareAccess,
    _In_ ULONG CreateDisposition,
    _In_ ULONG CreateOptions,
    _In_reads_bytes_opt_(EaLength) PVOID EaBuffer,
    _In_ ULONG EaLength
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtCreateNamedPipeFile(
    _Out_ PHANDLE FileHandle,
    _In_ ULONG DesiredAccess,
    _In_ POBJECT_ATTRIBUTES ObjectAttributes,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _In_ ULONG ShareAccess,
    _In_ ULONG CreateDisposition,
    _In_ ULONG CreateOptions,
    _In_ ULONG NamedPipeType,
    _In_ ULONG ReadMode,
    _In_ ULONG CompletionMode,
    _In_ ULONG MaximumInstances,
    _In_ ULONG InboundQuota,
    _In_ ULONG OutboundQuota,
    _In_opt_ PLARGE_INTEGER DefaultTimeout
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtCreateMailslotFile(
    _Out_ PHANDLE FileHandle,
    _In_ ULONG DesiredAccess,
    _In_ POBJECT_ATTRIBUTES ObjectAttributes,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _In_ ULONG CreateOptions,
    _In_ ULONG MailslotQuota,
    _In_ ULONG MaximumMessageSize,
    _In_ PLARGE_INTEGER ReadTimeout
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtOpenFile(
    _Out_ PHANDLE FileHandle,
    _In_ ACCESS_MASK DesiredAccess,
    _In_ POBJECT_ATTRIBUTES ObjectAttributes,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _In_ ULONG ShareAccess,
    _In_ ULONG OpenOptions
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtDeleteFile(
    _In_ POBJECT_ATTRIBUTES ObjectAttributes
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtFlushBuffersFile(
    _In_ HANDLE FileHandle,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock
    );

#define FLUSH_FLAGS_FILE_DATA_ONLY 0x00000001
#define FLUSH_FLAGS_NO_SYNC 0x00000002

#if (PHNT_VERSION >= PHNT_WIN8)
NTSYSCALLAPI
NTSTATUS
NTAPI
NtFlushBuffersFileEx(
    _In_ HANDLE FileHandle,
    _In_ ULONG Flags,
    _In_reads_bytes_(ParametersSize) PVOID Parameters,
    _In_ ULONG ParametersSize,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock
    );
#endif

NTSYSCALLAPI
NTSTATUS
NTAPI
NtQueryInformationFile(
    _In_ HANDLE FileHandle,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _Out_writes_bytes_(Length) PVOID FileInformation,
    _In_ ULONG Length,
    _In_ FILE_INFORMATION_CLASS FileInformationClass
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtSetInformationFile(
    _In_ HANDLE FileHandle,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _In_reads_bytes_(Length) PVOID FileInformation,
    _In_ ULONG Length,
    _In_ FILE_INFORMATION_CLASS FileInformationClass
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtQueryDirectoryFile(
    _In_ HANDLE FileHandle,
    _In_opt_ HANDLE Event,
    _In_opt_ PIO_APC_ROUTINE ApcRoutine,
    _In_opt_ PVOID ApcContext,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _Out_writes_bytes_(Length) PVOID FileInformation,
    _In_ ULONG Length,
    _In_ FILE_INFORMATION_CLASS FileInformationClass,
    _In_ BOOLEAN ReturnSingleEntry,
    _In_opt_ PUNICODE_STRING FileName,
    _In_ BOOLEAN RestartScan
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtQueryEaFile(
    _In_ HANDLE FileHandle,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _Out_writes_bytes_(Length) PVOID Buffer,
    _In_ ULONG Length,
    _In_ BOOLEAN ReturnSingleEntry,
    _In_reads_bytes_opt_(EaListLength) PVOID EaList,
    _In_ ULONG EaListLength,
    _In_opt_ PULONG EaIndex,
    _In_ BOOLEAN RestartScan
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtSetEaFile(
    _In_ HANDLE FileHandle,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _In_reads_bytes_(Length) PVOID Buffer,
    _In_ ULONG Length
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtQueryQuotaInformationFile(
    _In_ HANDLE FileHandle,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _Out_writes_bytes_(Length) PVOID Buffer,
    _In_ ULONG Length,
    _In_ BOOLEAN ReturnSingleEntry,
    _In_reads_bytes_opt_(SidListLength) PVOID SidList,
    _In_ ULONG SidListLength,
    _In_opt_ PSID StartSid,
    _In_ BOOLEAN RestartScan
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtSetQuotaInformationFile(
    _In_ HANDLE FileHandle,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _In_reads_bytes_(Length) PVOID Buffer,
    _In_ ULONG Length
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtQueryVolumeInformationFile(
    _In_ HANDLE FileHandle,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _Out_writes_bytes_(Length) PVOID FsInformation,
    _In_ ULONG Length,
    _In_ FSINFOCLASS FsInformationClass
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtSetVolumeInformationFile(
    _In_ HANDLE FileHandle,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _In_reads_bytes_(Length) PVOID FsInformation,
    _In_ ULONG Length,
    _In_ FSINFOCLASS FsInformationClass
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtCancelIoFile(
    _In_ HANDLE FileHandle,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock
    );

#if (PHNT_VERSION >= PHNT_VISTA)
NTSYSCALLAPI
NTSTATUS
NTAPI
NtCancelIoFileEx(
    _In_ HANDLE FileHandle,
    _In_opt_ PIO_STATUS_BLOCK IoRequestToCancel,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock
    );
#endif

#if (PHNT_VERSION >= PHNT_VISTA)
NTSYSCALLAPI
NTSTATUS
NTAPI
NtCancelSynchronousIoFile(
    _In_ HANDLE ThreadHandle,
    _In_opt_ PIO_STATUS_BLOCK IoRequestToCancel,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock
    );
#endif

NTSYSCALLAPI
NTSTATUS
NTAPI
NtDeviceIoControlFile(
    _In_ HANDLE FileHandle,
    _In_opt_ HANDLE Event,
    _In_opt_ PIO_APC_ROUTINE ApcRoutine,
    _In_opt_ PVOID ApcContext,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _In_ ULONG IoControlCode,
    _In_reads_bytes_opt_(InputBufferLength) PVOID InputBuffer,
    _In_ ULONG InputBufferLength,
    _Out_writes_bytes_opt_(OutputBufferLength) PVOID OutputBuffer,
    _In_ ULONG OutputBufferLength
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtFsControlFile(
    _In_ HANDLE FileHandle,
    _In_opt_ HANDLE Event,
    _In_opt_ PIO_APC_ROUTINE ApcRoutine,
    _In_opt_ PVOID ApcContext,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _In_ ULONG FsControlCode,
    _In_reads_bytes_opt_(InputBufferLength) PVOID InputBuffer,
    _In_ ULONG InputBufferLength,
    _Out_writes_bytes_opt_(OutputBufferLength) PVOID OutputBuffer,
    _In_ ULONG OutputBufferLength
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtReadFile(
    _In_ HANDLE FileHandle,
    _In_opt_ HANDLE Event,
    _In_opt_ PIO_APC_ROUTINE ApcRoutine,
    _In_opt_ PVOID ApcContext,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _Out_writes_bytes_(Length) PVOID Buffer,
    _In_ ULONG Length,
    _In_opt_ PLARGE_INTEGER ByteOffset,
    _In_opt_ PULONG Key
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtWriteFile(
    _In_ HANDLE FileHandle,
    _In_opt_ HANDLE Event,
    _In_opt_ PIO_APC_ROUTINE ApcRoutine,
    _In_opt_ PVOID ApcContext,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _In_reads_bytes_(Length) PVOID Buffer,
    _In_ ULONG Length,
    _In_opt_ PLARGE_INTEGER ByteOffset,
    _In_opt_ PULONG Key
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtReadFileScatter(
    _In_ HANDLE FileHandle,
    _In_opt_ HANDLE Event,
    _In_opt_ PIO_APC_ROUTINE ApcRoutine,
    _In_opt_ PVOID ApcContext,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _In_ PFILE_SEGMENT_ELEMENT SegmentArray,
    _In_ ULONG Length,
    _In_opt_ PLARGE_INTEGER ByteOffset,
    _In_opt_ PULONG Key
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtWriteFileGather(
    _In_ HANDLE FileHandle,
    _In_opt_ HANDLE Event,
    _In_opt_ PIO_APC_ROUTINE ApcRoutine,
    _In_opt_ PVOID ApcContext,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _In_ PFILE_SEGMENT_ELEMENT SegmentArray,
    _In_ ULONG Length,
    _In_opt_ PLARGE_INTEGER ByteOffset,
    _In_opt_ PULONG Key
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtLockFile(
    _In_ HANDLE FileHandle,
    _In_opt_ HANDLE Event,
    _In_opt_ PIO_APC_ROUTINE ApcRoutine,
    _In_opt_ PVOID ApcContext,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _In_ PLARGE_INTEGER ByteOffset,
    _In_ PLARGE_INTEGER Length,
    _In_ ULONG Key,
    _In_ BOOLEAN FailImmediately,
    _In_ BOOLEAN ExclusiveLock
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtUnlockFile(
    _In_ HANDLE FileHandle,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _In_ PLARGE_INTEGER ByteOffset,
    _In_ PLARGE_INTEGER Length,
    _In_ ULONG Key
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtQueryAttributesFile(
    _In_ POBJECT_ATTRIBUTES ObjectAttributes,
    _Out_ PFILE_BASIC_INFORMATION FileInformation
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtQueryFullAttributesFile(
    _In_ POBJECT_ATTRIBUTES ObjectAttributes,
    _Out_ PFILE_NETWORK_OPEN_INFORMATION FileInformation
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtNotifyChangeDirectoryFile(
    _In_ HANDLE FileHandle,
    _In_opt_ HANDLE Event,
    _In_opt_ PIO_APC_ROUTINE ApcRoutine,
    _In_opt_ PVOID ApcContext,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _Out_writes_bytes_(Length) PVOID Buffer, // FILE_NOTIFY_INFORMATION
    _In_ ULONG Length,
    _In_ ULONG CompletionFilter,
    _In_ BOOLEAN WatchTree
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtLoadDriver(
    _In_ PUNICODE_STRING DriverServiceName
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtUnloadDriver(
    _In_ PUNICODE_STRING DriverServiceName
    );

// I/O completion port

#ifndef IO_COMPLETION_QUERY_STATE
#define IO_COMPLETION_QUERY_STATE 0x0001
#endif

typedef enum _IO_COMPLETION_INFORMATION_CLASS
{
    IoCompletionBasicInformation
} IO_COMPLETION_INFORMATION_CLASS;

typedef struct _IO_COMPLETION_BASIC_INFORMATION
{
    LONG Depth;
} IO_COMPLETION_BASIC_INFORMATION, *PIO_COMPLETION_BASIC_INFORMATION;

NTSYSCALLAPI
NTSTATUS
NTAPI
NtCreateIoCompletion(
    _Out_ PHANDLE IoCompletionHandle,
    _In_ ACCESS_MASK DesiredAccess,
    _In_opt_ POBJECT_ATTRIBUTES ObjectAttributes,
    _In_opt_ ULONG Count
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtOpenIoCompletion(
    _Out_ PHANDLE IoCompletionHandle,
    _In_ ACCESS_MASK DesiredAccess,
    _In_ POBJECT_ATTRIBUTES ObjectAttributes
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtQueryIoCompletion(
    _In_ HANDLE IoCompletionHandle,
    _In_ IO_COMPLETION_INFORMATION_CLASS IoCompletionInformationClass,
    _Out_writes_bytes_(IoCompletionInformation) PVOID IoCompletionInformation,
    _In_ ULONG IoCompletionInformationLength,
    _Out_opt_ PULONG ReturnLength
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtSetIoCompletion(
    _In_ HANDLE IoCompletionHandle,
    _In_opt_ PVOID KeyContext,
    _In_opt_ PVOID ApcContext,
    _In_ NTSTATUS IoStatus,
    _In_ ULONG_PTR IoStatusInformation
    );

#if (PHNT_VERSION >= PHNT_WIN7)
NTSYSCALLAPI
NTSTATUS
NTAPI
NtSetIoCompletionEx(
    _In_ HANDLE IoCompletionHandle,
    _In_ HANDLE IoCompletionPacketHandle,
    _In_opt_ PVOID KeyContext,
    _In_opt_ PVOID ApcContext,
    _In_ NTSTATUS IoStatus,
    _In_ ULONG_PTR IoStatusInformation
    );
#endif

NTSYSCALLAPI
NTSTATUS
NTAPI
NtRemoveIoCompletion(
    _In_ HANDLE IoCompletionHandle,
    _Out_ PVOID *KeyContext,
    _Out_ PVOID *ApcContext,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _In_opt_ PLARGE_INTEGER Timeout
    );

#if (PHNT_VERSION >= PHNT_VISTA)
NTSYSCALLAPI
NTSTATUS
NTAPI
NtRemoveIoCompletionEx(
    _In_ HANDLE IoCompletionHandle,
    _Out_writes_to_(Count, *NumEntriesRemoved) PFILE_IO_COMPLETION_INFORMATION IoCompletionInformation,
    _In_ ULONG Count,
    _Out_ PULONG NumEntriesRemoved,
    _In_opt_ PLARGE_INTEGER Timeout,
    _In_ BOOLEAN Alertable
    );
#endif

// Wait completion packet

#if (PHNT_VERSION >= PHNT_WIN8)

NTSYSCALLAPI
NTSTATUS
NTAPI
NtCreateWaitCompletionPacket(
    _Out_ PHANDLE WaitCompletionPacketHandle,
    _In_ ACCESS_MASK DesiredAccess,
    _In_opt_ POBJECT_ATTRIBUTES ObjectAttributes
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtAssociateWaitCompletionPacket(
    _In_ HANDLE WaitCompletionPacketHandle,
    _In_ HANDLE IoCompletionHandle,
    _In_ HANDLE TargetObjectHandle,
    _In_opt_ PVOID KeyContext,
    _In_opt_ PVOID ApcContext,
    _In_ NTSTATUS IoStatus,
    _In_ ULONG_PTR IoStatusInformation,
    _Out_opt_ PBOOLEAN AlreadySignaled
    );

NTSYSCALLAPI
NTSTATUS
NTAPI
NtCancelWaitCompletionPacket(
    _In_ HANDLE WaitCompletionPacketHandle,
    _In_ BOOLEAN RemoveSignaledPacket
    );

#endif

// Sessions

typedef enum _IO_SESSION_EVENT
{
    IoSessionEventIgnore,
    IoSessionEventCreated,
    IoSessionEventTerminated,
    IoSessionEventConnected,
    IoSessionEventDisconnected,
    IoSessionEventLogon,
    IoSessionEventLogoff,
    IoSessionEventMax
} IO_SESSION_EVENT;

typedef enum _IO_SESSION_STATE
{
    IoSessionStateCreated,
    IoSessionStateInitialized,
    IoSessionStateConnected,
    IoSessionStateDisconnected,
    IoSessionStateDisconnectedLoggedOn,
    IoSessionStateLoggedOn,
    IoSessionStateLoggedOff,
    IoSessionStateTerminated,
    IoSessionStateMax
} IO_SESSION_STATE;

#if (PHNT_VERSION >= PHNT_WIN7)
NTSYSCALLAPI
NTSTATUS
NTAPI
NtNotifyChangeSession(
    _In_ HANDLE SessionHandle,
    _In_ ULONG ChangeSequenceNumber,
    _In_ PLARGE_INTEGER ChangeTimeStamp,
    _In_ IO_SESSION_EVENT Event,
    _In_ IO_SESSION_STATE NewState,
    _In_ IO_SESSION_STATE PreviousState,
    _In_reads_bytes_opt_(PayloadSize) PVOID Payload,
    _In_ ULONG PayloadSize
    );
#endif

// Other types

typedef enum _INTERFACE_TYPE
{
    InterfaceTypeUndefined = -1,
    Internal,
    Isa,
    Eisa,
    MicroChannel,
    TurboChannel,
    PCIBus,
    VMEBus,
    NuBus,
    PCMCIABus,
    CBus,
    MPIBus,
    MPSABus,
    ProcessorInternal,
    InternalPowerBus,
    PNPISABus,
    PNPBus,
    Vmcs,
    MaximumInterfaceType
} INTERFACE_TYPE, *PINTERFACE_TYPE;

typedef enum _DMA_WIDTH
{
    Width8Bits,
    Width16Bits,
    Width32Bits,
    MaximumDmaWidth
} DMA_WIDTH, *PDMA_WIDTH;

typedef enum _DMA_SPEED
{
    Compatible,
    TypeA,
    TypeB,
    TypeC,
    TypeF,
    MaximumDmaSpeed
} DMA_SPEED, *PDMA_SPEED;

typedef enum _BUS_DATA_TYPE
{
    ConfigurationSpaceUndefined = -1,
    Cmos,
    EisaConfiguration,
    Pos,
    CbusConfiguration,
    PCIConfiguration,
    VMEConfiguration,
    NuBusConfiguration,
    PCMCIAConfiguration,
    MPIConfiguration,
    MPSAConfiguration,
    PNPISAConfiguration,
    SgiInternalConfiguration,
    MaximumBusDataType
} BUS_DATA_TYPE, *PBUS_DATA_TYPE;

// Control structures

// Reparse structure for FSCTL_SET_REPARSE_POINT, FSCTL_GET_REPARSE_POINT, FSCTL_DELETE_REPARSE_POINT

#define SYMLINK_FLAG_RELATIVE 1

typedef struct _REPARSE_DATA_BUFFER
{
    ULONG ReparseTag;
    USHORT ReparseDataLength;
    USHORT Reserved;
    union
    {
        struct
        {
            USHORT SubstituteNameOffset;
            USHORT SubstituteNameLength;
            USHORT PrintNameOffset;
            USHORT PrintNameLength;
            ULONG Flags;
            WCHAR PathBuffer[1];
        } SymbolicLinkReparseBuffer;
        struct
        {
            USHORT SubstituteNameOffset;
            USHORT SubstituteNameLength;
            USHORT PrintNameOffset;
            USHORT PrintNameLength;
            WCHAR PathBuffer[1];
        } MountPointReparseBuffer;
        struct
        {
            UCHAR DataBuffer[1];
        } GenericReparseBuffer;
    };
} REPARSE_DATA_BUFFER, *PREPARSE_DATA_BUFFER;

// Named pipe FS control definitions

#define DEVICE_NAMED_PIPE L"\\Device\\NamedPipe\\"

#define FSCTL_PIPE_ASSIGN_EVENT             CTL_CODE(FILE_DEVICE_NAMED_PIPE, 0, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define FSCTL_PIPE_DISCONNECT               CTL_CODE(FILE_DEVICE_NAMED_PIPE, 1, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define FSCTL_PIPE_LISTEN                   CTL_CODE(FILE_DEVICE_NAMED_PIPE, 2, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define FSCTL_PIPE_PEEK                     CTL_CODE(FILE_DEVICE_NAMED_PIPE, 3, METHOD_BUFFERED, FILE_READ_DATA)
#define FSCTL_PIPE_QUERY_EVENT              CTL_CODE(FILE_DEVICE_NAMED_PIPE, 4, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define FSCTL_PIPE_TRANSCEIVE               CTL_CODE(FILE_DEVICE_NAMED_PIPE, 5, METHOD_NEITHER,  FILE_READ_DATA | FILE_WRITE_DATA)
#define FSCTL_PIPE_WAIT                     CTL_CODE(FILE_DEVICE_NAMED_PIPE, 6, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define FSCTL_PIPE_IMPERSONATE              CTL_CODE(FILE_DEVICE_NAMED_PIPE, 7, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define FSCTL_PIPE_SET_CLIENT_PROCESS       CTL_CODE(FILE_DEVICE_NAMED_PIPE, 8, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define FSCTL_PIPE_QUERY_CLIENT_PROCESS     CTL_CODE(FILE_DEVICE_NAMED_PIPE, 9, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define FSCTL_PIPE_GET_PIPE_ATTRIBUTE       CTL_CODE(FILE_DEVICE_NAMED_PIPE, 10, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define FSCTL_PIPE_SET_PIPE_ATTRIBUTE       CTL_CODE(FILE_DEVICE_NAMED_PIPE, 11, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define FSCTL_PIPE_GET_CONNECTION_ATTRIBUTE CTL_CODE(FILE_DEVICE_NAMED_PIPE, 12, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define FSCTL_PIPE_SET_CONNECTION_ATTRIBUTE CTL_CODE(FILE_DEVICE_NAMED_PIPE, 13, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define FSCTL_PIPE_GET_HANDLE_ATTRIBUTE     CTL_CODE(FILE_DEVICE_NAMED_PIPE, 14, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define FSCTL_PIPE_SET_HANDLE_ATTRIBUTE     CTL_CODE(FILE_DEVICE_NAMED_PIPE, 15, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define FSCTL_PIPE_FLUSH                    CTL_CODE(FILE_DEVICE_NAMED_PIPE, 16, METHOD_BUFFERED, FILE_WRITE_DATA)

#define FSCTL_PIPE_INTERNAL_READ            CTL_CODE(FILE_DEVICE_NAMED_PIPE, 2045, METHOD_BUFFERED, FILE_READ_DATA)
#define FSCTL_PIPE_INTERNAL_WRITE           CTL_CODE(FILE_DEVICE_NAMED_PIPE, 2046, METHOD_BUFFERED, FILE_WRITE_DATA)
#define FSCTL_PIPE_INTERNAL_TRANSCEIVE      CTL_CODE(FILE_DEVICE_NAMED_PIPE, 2047, METHOD_NEITHER, FILE_READ_DATA | FILE_WRITE_DATA)
#define FSCTL_PIPE_INTERNAL_READ_OVFLOW     CTL_CODE(FILE_DEVICE_NAMED_PIPE, 2048, METHOD_BUFFERED, FILE_READ_DATA)

// Flags for query event

#define FILE_PIPE_READ_DATA 0x00000000
#define FILE_PIPE_WRITE_SPACE 0x00000001

// Input for FSCTL_PIPE_ASSIGN_EVENT
typedef struct _FILE_PIPE_ASSIGN_EVENT_BUFFER
{
    HANDLE EventHandle;
    ULONG KeyValue;
} FILE_PIPE_ASSIGN_EVENT_BUFFER, *PFILE_PIPE_ASSIGN_EVENT_BUFFER;

// Output for FILE_PIPE_PEEK_BUFFER
typedef struct _FILE_PIPE_PEEK_BUFFER
{
    ULONG NamedPipeState;
    ULONG ReadDataAvailable;
    ULONG NumberOfMessages;
    ULONG MessageLength;
    CHAR Data[1];
} FILE_PIPE_PEEK_BUFFER, *PFILE_PIPE_PEEK_BUFFER;

// Output for FSCTL_PIPE_QUERY_EVENT
typedef struct _FILE_PIPE_EVENT_BUFFER
{
    ULONG NamedPipeState;
    ULONG EntryType;
    ULONG ByteCount;
    ULONG KeyValue;
    ULONG NumberRequests;
} FILE_PIPE_EVENT_BUFFER, *PFILE_PIPE_EVENT_BUFFER;

// Input for FSCTL_PIPE_WAIT
typedef struct _FILE_PIPE_WAIT_FOR_BUFFER
{
    LARGE_INTEGER Timeout;
    ULONG NameLength;
    BOOLEAN TimeoutSpecified;
    WCHAR Name[1];
} FILE_PIPE_WAIT_FOR_BUFFER, *PFILE_PIPE_WAIT_FOR_BUFFER;

// Input for FSCTL_PIPE_SET_CLIENT_PROCESS, Output for FSCTL_PIPE_QUERY_CLIENT_PROCESS
typedef struct _FILE_PIPE_CLIENT_PROCESS_BUFFER
{
#if !defined(BUILD_WOW6432)
    PVOID ClientSession;
    PVOID ClientProcess;
#else
    ULONGLONG ClientSession;
    ULONGLONG ClientProcess;
#endif
} FILE_PIPE_CLIENT_PROCESS_BUFFER, *PFILE_PIPE_CLIENT_PROCESS_BUFFER;

#define FILE_PIPE_COMPUTER_NAME_LENGTH 15

// Input for FSCTL_PIPE_SET_CLIENT_PROCESS, Output for FSCTL_PIPE_QUERY_CLIENT_PROCESS
typedef struct _FILE_PIPE_CLIENT_PROCESS_BUFFER_EX
{
#if !defined(BUILD_WOW6432)
    PVOID ClientSession;
    PVOID ClientProcess;
#else
    ULONGLONG ClientSession;
    ULONGLONG ClientProcess;
#endif
    USHORT ClientComputerNameLength; // in bytes
    WCHAR ClientComputerBuffer[FILE_PIPE_COMPUTER_NAME_LENGTH + 1]; // null-terminated
} FILE_PIPE_CLIENT_PROCESS_BUFFER_EX, *PFILE_PIPE_CLIENT_PROCESS_BUFFER_EX;

// Mailslot FS control definitions

#define MAILSLOT_CLASS_FIRSTCLASS 1
#define MAILSLOT_CLASS_SECONDCLASS 2

#define FSCTL_MAILSLOT_PEEK             CTL_CODE(FILE_DEVICE_MAILSLOT, 0, METHOD_NEITHER, FILE_READ_DATA)

// Output for FSCTL_MAILSLOT_PEEK
typedef struct _FILE_MAILSLOT_PEEK_BUFFER
{
    ULONG ReadDataAvailable;
    ULONG NumberOfMessages;
    ULONG MessageLength;
} FILE_MAILSLOT_PEEK_BUFFER, *PFILE_MAILSLOT_PEEK_BUFFER;

#endif
