    {-# LANGUAGE Trustworthy #-}
    {-# LANGUAGE CPP
               , NoImplicitPrelude
               , MagicHash
               , GeneralizedNewtypeDeriving
      #-}
    {-# LANGUAGE AutoDeriveTypeable, StandaloneDeriving #-}

    -----------------------------------------------------------------------------
    -- |
    -- Module      :  System.Posix.Types
    -- Copyright   :  (c) The University of Glasgow 2002
    -- License     :  BSD-style (see the file libraries/base/LICENSE)
    --
    -- Maintainer  :  libraries@haskell.org
    -- Stability   :  provisional
    -- Portability :  non-portable (requires POSIX)
    --
    -- POSIX data types: Haskell equivalents of the types defined by the
    -- @\<sys\/types.h>@ C header on a POSIX system.
    --
    -----------------------------------------------------------------------------
    #include "HsBaseConfig.h"

    module System.Posix.Types (

      -- * POSIX data types
    #if defined(HTYPE_DEV_T)
      CDev(..),
    #endif
    #if defined(HTYPE_INO_T)
      CIno(..),
    #endif
    #if defined(HTYPE_MODE_T)
      CMode(..),
    #endif
    #if defined(HTYPE_OFF_T)
      COff(..),
    #endif
    #if defined(HTYPE_PID_T)
      CPid(..),
    #endif
    #if defined(HTYPE_SSIZE_T)
      CSsize(..),
    #endif

    #if defined(HTYPE_GID_T)
      CGid(..),
    #endif
    #if defined(HTYPE_NLINK_T)
      CNlink(..),
    #endif
    #if defined(HTYPE_UID_T)
      CUid(..),
    #endif
    #if defined(HTYPE_CC_T)
      CCc(..),
    #endif
    #if defined(HTYPE_SPEED_T)
      CSpeed(..),
    #endif
    #if defined(HTYPE_TCFLAG_T)
      CTcflag(..),
    #endif
    #if defined(HTYPE_RLIM_T)
      CRLim(..),
    #endif

      Fd(..),

    #if defined(HTYPE_NLINK_T)
      LinkCount,
    #endif
    #if defined(HTYPE_UID_T)
      UserID,
    #endif
    #if defined(HTYPE_GID_T)
      GroupID,
    #endif

      ByteCount,
      ClockTick,
      EpochTime,
      FileOffset,
      ProcessID,
      ProcessGroupID,
      DeviceID,
      FileID,
      FileMode,
      Limit
     ) where

    import Foreign
    import Foreign.C
    import Data.Typeable
    -- import Data.Bits

    import GHC.Base
    import GHC.Enum
    import GHC.Num
    import GHC.Real
    -- import GHC.Prim
    import GHC.Read
    import GHC.Show

    #include "CTypes.h"

    #if defined(HTYPE_DEV_T)
    INTEGRAL_TYPE(CDev,HTYPE_DEV_T)
    #endif
    #if defined(HTYPE_INO_T)
    INTEGRAL_TYPE(CIno,HTYPE_INO_T)
    #endif
    #if defined(HTYPE_MODE_T)
    INTEGRAL_TYPE_WITH_CTYPE(CMode,mode_t,HTYPE_MODE_T)
    #endif
    #if defined(HTYPE_OFF_T)
    INTEGRAL_TYPE(COff,HTYPE_OFF_T)
    #endif
    #if defined(HTYPE_PID_T)
    INTEGRAL_TYPE(CPid,HTYPE_PID_T)
    #endif

    #if defined(HTYPE_SSIZE_T)
    INTEGRAL_TYPE(CSsize,HTYPE_SSIZE_T)
    #endif

    #if defined(HTYPE_GID_T)
    INTEGRAL_TYPE(CGid,HTYPE_GID_T)
    #endif
    #if defined(HTYPE_NLINK_T)
    INTEGRAL_TYPE(CNlink,HTYPE_NLINK_T)
    #endif

    #if defined(HTYPE_UID_T)
    INTEGRAL_TYPE(CUid,HTYPE_UID_T)
    #endif
    #if defined(HTYPE_CC_T)
    ARITHMETIC_TYPE(CCc,HTYPE_CC_T)
    #endif
    #if defined(HTYPE_SPEED_T)
    ARITHMETIC_TYPE(CSpeed,HTYPE_SPEED_T)
    #endif
    #if defined(HTYPE_TCFLAG_T)
    INTEGRAL_TYPE(CTcflag,HTYPE_TCFLAG_T)
    #endif
    #if defined(HTYPE_RLIM_T)
    INTEGRAL_TYPE(CRLim,HTYPE_RLIM_T)
    #endif

    -- ToDo: blksize_t, clockid_t, blkcnt_t, fsblkcnt_t, fsfilcnt_t, id_t, key_t
    -- suseconds_t, timer_t, useconds_t

    -- Make an Fd type rather than using CInt everywhere
    INTEGRAL_TYPE(Fd,CInt)

    -- nicer names, and backwards compatibility with POSIX library:
    #if defined(HTYPE_NLINK_T)
    type LinkCount      = CNlink
    #endif
    #if defined(HTYPE_UID_T)
    type UserID         = CUid
    #endif
    #if defined(HTYPE_GID_T)
    type GroupID        = CGid
    #endif

    type ByteCount      = CSize
    type ClockTick      = CClock
    type EpochTime      = CTime
    type DeviceID       = CDev
    type FileID         = CIno
    type FileMode       = CMode
    type ProcessID      = CPid
    type FileOffset     = COff
    type ProcessGroupID = CPid
    type Limit          = CLong