/*
 * fltuserstructures.h
 *
 * This file is part of the ReactOS DDK package.
 *
 * Contributors:
 *   Amine Khaldi (amine.khaldi@reactos.org)
 *
 * THIS SOFTWARE IS NOT COPYRIGHTED
 *
 * This source code is offered for use in the public domain. You may
 * use, modify or distribute it freely.
 *
 * This code is distributed in the hope that it will be useful but
 * WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
 * DISCLAIMED. This includes but is not limited to warranties of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 */
#pragma once

#ifndef __FLT_USER_STRUCTURES_H__
#define __FLT_USER_STRUCTURES_H__

#if FLT_MGR_BASELINE

#define FLTAPI NTAPI

#define FILTER_NAME_MAX_CHARS 255
#define FILTER_NAME_MAX_BYTES (FILTER_NAME_MAX_CHARS * sizeof(WCHAR))
#define VOLUME_NAME_MAX_CHARS 1024
#define VOLUME_NAME_MAX_BYTES (VOLUME_NAME_MAX_CHARS * sizeof(WCHAR))
#define INSTANCE_NAME_MAX_CHARS 255
#define INSTANCE_NAME_MAX_BYTES (INSTANCE_NAME_MAX_CHARS * sizeof(WCHAR))

typedef HANDLE HFILTER, HFILTER_INSTANCE, HFILTER_VOLUME;

#ifndef _NTDEF_H
typedef _Return_type_success_(return >= 0) LONG NTSTATUS, *PNTSTATUS;
#endif

/* Known File System Types */

typedef enum _FLT_FILESYSTEM_TYPE {
  FLT_FSTYPE_UNKNOWN,
  FLT_FSTYPE_RAW,
  FLT_FSTYPE_NTFS,
  FLT_FSTYPE_FAT,
  FLT_FSTYPE_CDFS,
  FLT_FSTYPE_UDFS,
  FLT_FSTYPE_LANMAN,
  FLT_FSTYPE_WEBDAV,
  FLT_FSTYPE_RDPDR,
  FLT_FSTYPE_NFS,
  FLT_FSTYPE_MS_NETWARE,
  FLT_FSTYPE_NETWARE,
  FLT_FSTYPE_BSUDF,
  FLT_FSTYPE_MUP,
  FLT_FSTYPE_RSFX,
  FLT_FSTYPE_ROXIO_UDF1,
  FLT_FSTYPE_ROXIO_UDF2,
  FLT_FSTYPE_ROXIO_UDF3,
  FLT_FSTYPE_TACIT,
  FLT_FSTYPE_FS_REC,
  FLT_FSTYPE_INCD,
  FLT_FSTYPE_INCD_FAT,
  FLT_FSTYPE_EXFAT,
  FLT_FSTYPE_PSFS,
  FLT_FSTYPE_GPFS,
  FLT_FSTYPE_NPFS,
  FLT_FSTYPE_MSFS,
  FLT_FSTYPE_CSVFS
} FLT_FILESYSTEM_TYPE, *PFLT_FILESYSTEM_TYPE;

typedef enum _FILTER_INFORMATION_CLASS {
  FilterFullInformation,
  FilterAggregateBasicInformation,
  FilterAggregateStandardInformation
} FILTER_INFORMATION_CLASS, *PFILTER_INFORMATION_CLASS;

typedef enum _FILTER_VOLUME_INFORMATION_CLASS {
  FilterVolumeBasicInformation,
  FilterVolumeStandardInformation
} FILTER_VOLUME_INFORMATION_CLASS, *PFILTER_VOLUME_INFORMATION_CLASS;

typedef enum _INSTANCE_INFORMATION_CLASS {
  InstanceBasicInformation,
  InstancePartialInformation,
  InstanceFullInformation,
  InstanceAggregateStandardInformation
} INSTANCE_INFORMATION_CLASS, *PINSTANCE_INFORMATION_CLASS;

typedef struct _FILTER_FULL_INFORMATION {
  ULONG NextEntryOffset;
  ULONG FrameID;
  ULONG NumberOfInstances;
  USHORT FilterNameLength;
  WCHAR FilterNameBuffer[1];
} FILTER_FULL_INFORMATION, *PFILTER_FULL_INFORMATION;

typedef struct _FILTER_AGGREGATE_BASIC_INFORMATION {
  ULONG NextEntryOffset;
  ULONG Flags;
  union {
    struct {
      ULONG FrameID;
      ULONG NumberOfInstances;
      USHORT FilterNameLength;
      USHORT FilterNameBufferOffset;
      USHORT FilterAltitudeLength;
      USHORT FilterAltitudeBufferOffset;
    } MiniFilter;
    struct {
      USHORT FilterNameLength;
      USHORT FilterNameBufferOffset;
    } LegacyFilter;
  } Type;
} FILTER_AGGREGATE_BASIC_INFORMATION, *PFILTER_AGGREGATE_BASIC_INFORMATION;

#if FLT_MGR_LONGHORN

#define FLTFL_AGGREGATE_INFO_IS_MINIFILTER   0x00000001
#define FLTFL_AGGREGATE_INFO_IS_LEGACYFILTER 0x00000002
#define FLTFL_ASI_IS_MINIFILTER              0x00000001
#define FLTFL_ASI_IS_LEGACYFILTER            0x00000002
#define FLTFL_VSI_DETACHED_VOLUME            0x00000001
#define FLTFL_IASI_IS_MINIFILTER             0x00000001
#define FLTFL_IASI_IS_LEGACYFILTER           0x00000002
#define FLTFL_IASIM_DETACHED_VOLUME          0x00000001
#define FLTFL_IASIL_DETACHED_VOLUME          0x00000001

typedef struct _FILTER_AGGREGATE_STANDARD_INFORMATION {
  ULONG NextEntryOffset;
  ULONG Flags;
  union {
    struct {
      ULONG Flags;
      ULONG FrameID;
      ULONG NumberOfInstances;
      USHORT FilterNameLength;
      USHORT FilterNameBufferOffset;
      USHORT FilterAltitudeLength;
      USHORT FilterAltitudeBufferOffset;
    } MiniFilter;
    struct {
      ULONG Flags;
      USHORT FilterNameLength;
      USHORT FilterNameBufferOffset;
      USHORT FilterAltitudeLength;
      USHORT FilterAltitudeBufferOffset;
    } LegacyFilter;
  } Type;
} FILTER_AGGREGATE_STANDARD_INFORMATION, *PFILTER_AGGREGATE_STANDARD_INFORMATION;

typedef struct _FILTER_VOLUME_STANDARD_INFORMATION {
  ULONG NextEntryOffset;
  ULONG Flags;
  ULONG FrameID;
  FLT_FILESYSTEM_TYPE FileSystemType;
  USHORT FilterVolumeNameLength;
  WCHAR FilterVolumeName[1];
} FILTER_VOLUME_STANDARD_INFORMATION, *PFILTER_VOLUME_STANDARD_INFORMATION;

typedef struct _INSTANCE_AGGREGATE_STANDARD_INFORMATION {
  ULONG NextEntryOffset;
  ULONG Flags;
  union {
    struct {
      ULONG Flags;
      ULONG FrameID;
      FLT_FILESYSTEM_TYPE VolumeFileSystemType;
      USHORT InstanceNameLength;
      USHORT InstanceNameBufferOffset;
      USHORT AltitudeLength;
      USHORT AltitudeBufferOffset;
      USHORT VolumeNameLength;
      USHORT VolumeNameBufferOffset;
      USHORT FilterNameLength;
      USHORT FilterNameBufferOffset;
    } MiniFilter;
    struct {
      ULONG Flags;
      USHORT AltitudeLength;
      USHORT AltitudeBufferOffset;
      USHORT VolumeNameLength;
      USHORT VolumeNameBufferOffset;
      USHORT FilterNameLength;
      USHORT FilterNameBufferOffset;
    } LegacyFilter;
  } Type;
} INSTANCE_AGGREGATE_STANDARD_INFORMATION, *PINSTANCE_AGGREGATE_STANDARD_INFORMATION;

#endif /* FLT_MGR_LONGHORN */

typedef struct _FILTER_VOLUME_BASIC_INFORMATION {
  USHORT FilterVolumeNameLength;
  WCHAR FilterVolumeName[1];
} FILTER_VOLUME_BASIC_INFORMATION, *PFILTER_VOLUME_BASIC_INFORMATION;

typedef
_Struct_size_bytes_(sizeof(INSTANCE_BASIC_INFORMATION) * InstanceNameLength)
struct _INSTANCE_BASIC_INFORMATION {
  ULONG NextEntryOffset;
  USHORT InstanceNameLength;
  USHORT InstanceNameBufferOffset;
} INSTANCE_BASIC_INFORMATION, *PINSTANCE_BASIC_INFORMATION;

typedef
_Struct_size_bytes_(sizeof(INSTANCE_PARTIAL_INFORMATION) + InstanceNameLength + AltitudeLength)
struct _INSTANCE_PARTIAL_INFORMATION {
  ULONG NextEntryOffset;
  USHORT InstanceNameLength;
  USHORT InstanceNameBufferOffset;
  USHORT AltitudeLength;
  USHORT AltitudeBufferOffset;
} INSTANCE_PARTIAL_INFORMATION, *PINSTANCE_PARTIAL_INFORMATION;

typedef
_Struct_size_bytes_(sizeof(INSTANCE_FULL_INFORMATION) + InstanceNameLength + AltitudeLength + VolumeNameLength + FilterNameLength)
struct _INSTANCE_FULL_INFORMATION {
  ULONG NextEntryOffset;
  USHORT InstanceNameLength;
  USHORT InstanceNameBufferOffset;
  USHORT AltitudeLength;
  USHORT AltitudeBufferOffset;
  USHORT VolumeNameLength;
  USHORT VolumeNameBufferOffset;
  USHORT FilterNameLength;
  USHORT FilterNameBufferOffset;
} INSTANCE_FULL_INFORMATION, *PINSTANCE_FULL_INFORMATION;

typedef struct _FILTER_MESSAGE_HEADER {
  ULONG ReplyLength;
  ULONGLONG MessageId;
} FILTER_MESSAGE_HEADER, *PFILTER_MESSAGE_HEADER;

typedef struct _FILTER_REPLY_HEADER {
  NTSTATUS Status;
  ULONGLONG MessageId;
} FILTER_REPLY_HEADER, *PFILTER_REPLY_HEADER;

#endif /* FLT_MGR_BASELINE */

#endif /* __FLT_USER_STRUCTURES_H__ */