System/Posix/Types.hs

    {-# LANGUAGE CPP #-}
    {-# LANGUAGE DerivingStrategies #-}
    {-# LANGUAGE GeneralizedNewtypeDeriving #-}
    {-# LANGUAGE MagicHash #-}
    {-# LANGUAGE NoImplicitPrelude #-}
    {-# LANGUAGE StandaloneDeriving #-}
    {-# LANGUAGE Trustworthy #-}

    -----------------------------------------------------------------------------
    -- |
    -- 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

      -- ** Platform differences
      -- | This module contains platform specific information about types.
      --   __/As such the types presented on this page reflect the platform
      --   on which the documentation was generated and may not coincide with
      --   the types on your platform./__
    #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
    #if defined(HTYPE_BLKSIZE_T)
      CBlkSize(..),
    #endif
    #if defined(HTYPE_BLKCNT_T)
      CBlkCnt(..),
    #endif
    #if defined(HTYPE_CLOCKID_T)
      CClockId(..),
    #endif
    #if defined(HTYPE_FSBLKCNT_T)
      CFsBlkCnt(..),
    #endif
    #if defined(HTYPE_FSFILCNT_T)
      CFsFilCnt(..),
    #endif
    #if defined(HTYPE_ID_T)
      CId(..),
    #endif
    #if defined(HTYPE_KEY_T)
      CKey(..),
    #endif
    #if defined(HTYPE_TIMER_T)
      CTimer(..),
    #endif

      Fd(..),

      -- See Note [Exporting constructors of marshallable foreign types]
      -- in Foreign.Ptr for why the constructors for these newtypes are
      -- exported.

    #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.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

    #if defined(HTYPE_BLKSIZE_T)
    -- | @since 4.10.0.0
    INTEGRAL_TYPE_WITH_CTYPE(CBlkSize,blksize_t,HTYPE_BLKSIZE_T)
    #endif
    #if defined(HTYPE_BLKCNT_T)
    -- | @since 4.10.0.0
    INTEGRAL_TYPE_WITH_CTYPE(CBlkCnt,blkcnt_t,HTYPE_BLKCNT_T)
    #endif
    #if defined(HTYPE_CLOCKID_T)
    -- | @since 4.10.0.0
    INTEGRAL_TYPE_WITH_CTYPE(CClockId,clockid_t,HTYPE_CLOCKID_T)
    #endif
    #if defined(HTYPE_FSBLKCNT_T)
    -- | @since 4.10.0.0
    INTEGRAL_TYPE_WITH_CTYPE(CFsBlkCnt,fsblkcnt_t,HTYPE_FSBLKCNT_T)
    #endif
    #if defined(HTYPE_FSFILCNT_T)
    -- | @since 4.10.0.0
    INTEGRAL_TYPE_WITH_CTYPE(CFsFilCnt,fsfilcnt_t,HTYPE_FSFILCNT_T)
    #endif
    #if defined(HTYPE_ID_T)
    -- | @since 4.10.0.0
    INTEGRAL_TYPE_WITH_CTYPE(CId,id_t,HTYPE_ID_T)
    #endif
    #if defined(HTYPE_KEY_T)
    -- | @since 4.10.0.0
    INTEGRAL_TYPE_WITH_CTYPE(CKey,key_t,HTYPE_KEY_T)
    #endif
    #if defined(HTYPE_TIMER_T)
    -- | @since 4.10.0.0
    OPAQUE_TYPE_WITH_CTYPE(CTimer,timer_t,HTYPE_TIMER_T)
    #endif

    -- 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