-{-# OPTIONS -fno-implicit-prelude #-}
+{-# OPTIONS_GHC -XNoImplicitPrelude #-}
+{-# OPTIONS_GHC -fno-warn-unused-binds #-}
+{-# OPTIONS_HADDOCK hide #-}
-----------------------------------------------------------------------------
-- |
--
-- Maintainer : cvs-ghc@haskell.org
-- Stability : internal
--- Portability : non-portable
+-- Portability : non-portable (requires POSIX)
--
-- POSIX support layer for the standard libraries.
-- This library is built on *every* platform, including Win32.
--
-- Non-posix compliant in order to support the following features:
--- * S_ISSOCK (no sockets in POSIX)
+-- * S_ISSOCK (no sockets in POSIX)
--
-----------------------------------------------------------------------------
-- #hide
module System.Posix.Internals where
-#include "config.h"
+#include "HsBaseConfig.h"
+#if ! (defined(mingw32_HOST_OS) || defined(__MINGW32__))
import Control.Monad
+#endif
import System.Posix.Types
import Foreign
import Data.Bits
import Data.Maybe
-#ifdef __GLASGOW_HASKELL__
+#if __GLASGOW_HASKELL__
import GHC.Base
import GHC.Num
import GHC.Real
import GHC.IOBase
+#elif __HUGS__
+import Hugs.Prelude (IOException(..), IOErrorType(..))
+import Hugs.IO (IOMode(..))
#else
import System.IO
#endif
#ifdef __HUGS__
-import Hugs.Prelude (IOException(..), IOErrorType(..))
-
-{-# CBITS PrelIOUtils.c dirUtils.c #-}
+{-# CFILES cbits/PrelIOUtils.c cbits/dirUtils.c cbits/consUtils.c #-}
#endif
-- ---------------------------------------------------------------------------
type CSigset = ()
type CStat = ()
type CTermios = ()
-type CTm = ()
-type CTms = ()
+type CTm = ()
+type CTms = ()
type CUtimbuf = ()
type CUtsname = ()
#ifndef __GLASGOW_HASKELL__
-type FD = Int
+type FD = CInt
#endif
-- ---------------------------------------------------------------------------
-- stat()-related stuff
-fdFileSize :: Int -> IO Integer
+fdFileSize :: FD -> IO Integer
fdFileSize fd =
allocaBytes sizeof_stat $ \ p_stat -> do
throwErrnoIfMinus1Retry "fileSize" $
- c_fstat (fromIntegral fd) p_stat
+ c_fstat fd p_stat
c_mode <- st_mode p_stat :: IO CMode
if not (s_isreg c_mode)
- then return (-1)
- else do
- c_size <- st_size p_stat :: IO COff
+ then return (-1)
+ else do
+ c_size <- st_size p_stat
return (fromIntegral c_size)
-data FDType = Directory | Stream | RegularFile
- deriving (Eq)
+data FDType = Directory | Stream | RegularFile | RawDevice
+ deriving (Eq)
fileType :: FilePath -> IO FDType
fileType file =
-- NOTE: On Win32 platforms, this will only work with file descriptors
-- referring to file handles. i.e., it'll fail for socket FDs.
-fdType :: Int -> IO FDType
-fdType fd =
+fdStat :: FD -> IO (FDType, CDev, CIno)
+fdStat fd =
allocaBytes sizeof_stat $ \ p_stat -> do
throwErrnoIfMinus1Retry "fdType" $
- c_fstat (fromIntegral fd) p_stat
- statGetType p_stat
+ c_fstat fd p_stat
+ ty <- statGetType p_stat
+ dev <- st_dev p_stat
+ ino <- st_ino p_stat
+ return (ty,dev,ino)
+
+fdType :: FD -> IO FDType
+fdType fd = do (ty,_,_) <- fdStat fd; return ty
+statGetType :: Ptr CStat -> IO FDType
statGetType p_stat = do
c_mode <- st_mode p_stat :: IO CMode
case () of
- _ | s_isdir c_mode -> return Directory
+ _ | s_isdir c_mode -> return Directory
| s_isfifo c_mode || s_issock c_mode || s_ischr c_mode
- -> return Stream
- | s_isreg c_mode -> return RegularFile
- | otherwise -> ioError ioe_unknownfiletype
+ -> return Stream
+ | s_isreg c_mode -> return RegularFile
+ -- Q: map char devices to RawDevice too?
+ | s_isblk c_mode -> return RawDevice
+ | otherwise -> ioError ioe_unknownfiletype
-
+ioe_unknownfiletype :: IOException
ioe_unknownfiletype = IOError Nothing UnsupportedOperation "fdType"
- "unknown file type" Nothing
-
--- It isn't clear whether ftruncate is POSIX or not (I've read several
--- manpages and they seem to conflict), so we truncate using open/2.
-fileTruncate :: FilePath -> IO ()
-fileTruncate file = do
- let flags = o_WRONLY .|. o_TRUNC
- withCString file $ \file_cstr -> do
- fd <- fromIntegral `liftM`
- throwErrnoIfMinus1Retry "fileTruncate"
- (c_open file_cstr (fromIntegral flags) 0o666)
- c_close fd
- return ()
-
-#ifdef mingw32_TARGET_OS
+ "unknown file type"
+#if __GLASGOW_HASKELL__
+ Nothing
+#endif
+ Nothing
+
+#if __GLASGOW_HASKELL__ && (defined(mingw32_HOST_OS) || defined(__MINGW32__))
closeFd :: Bool -> CInt -> IO CInt
closeFd isStream fd
| isStream = c_closesocket fd
c_closesocket :: CInt -> IO CInt
#endif
-fdGetMode :: Int -> IO IOMode
-fdGetMode fd = do
-#ifdef mingw32_TARGET_OS
- flags1 <- throwErrnoIfMinus1Retry "fdGetMode"
- (c__setmode (fromIntegral fd) (fromIntegral o_WRONLY))
- flags <- throwErrnoIfMinus1Retry "fdGetMode"
- (c__setmode (fromIntegral fd) (fromIntegral flags1))
+fdGetMode :: FD -> IO IOMode
+#if defined(mingw32_HOST_OS) || defined(__MINGW32__)
+fdGetMode _ = do
+ -- We don't have a way of finding out which flags are set on FDs
+ -- on Windows, so make a handle that thinks that anything goes.
+ let flags = o_RDWR
#else
+fdGetMode fd = do
flags <- throwErrnoIfMinus1Retry "fdGetMode"
- (c_fcntl_read (fromIntegral fd) const_f_getfl)
+ (c_fcntl_read fd const_f_getfl)
#endif
let
wH = (flags .&. o_WRONLY) /= 0
rwH = (flags .&. o_RDWR) /= 0
mode
- | wH && aH = AppendMode
- | wH = WriteMode
- | rwH = ReadWriteMode
- | otherwise = ReadMode
-
+ | wH && aH = AppendMode
+ | wH = WriteMode
+ | rwH = ReadWriteMode
+ | otherwise = ReadMode
+
return mode
-- ---------------------------------------------------------------------------
-- Terminal-related stuff
-fdIsTTY :: Int -> IO Bool
-fdIsTTY fd = c_isatty (fromIntegral fd) >>= return.toBool
+fdIsTTY :: FD -> IO Bool
+fdIsTTY fd = c_isatty fd >>= return.toBool
-#ifndef mingw32_TARGET_OS
+#if defined(HTYPE_TCFLAG_T)
-setEcho :: Int -> Bool -> IO ()
+setEcho :: FD -> Bool -> IO ()
setEcho fd on = do
tcSetAttr fd $ \ p_tios -> do
- c_lflag <- c_lflag p_tios :: IO CTcflag
- let new_c_lflag
- | on = c_lflag .|. fromIntegral const_echo
- | otherwise = c_lflag .&. complement (fromIntegral const_echo)
- poke_c_lflag p_tios (new_c_lflag :: CTcflag)
+ lflag <- c_lflag p_tios :: IO CTcflag
+ let new_lflag
+ | on = lflag .|. fromIntegral const_echo
+ | otherwise = lflag .&. complement (fromIntegral const_echo)
+ poke_c_lflag p_tios (new_lflag :: CTcflag)
-getEcho :: Int -> IO Bool
+getEcho :: FD -> IO Bool
getEcho fd = do
tcSetAttr fd $ \ p_tios -> do
- c_lflag <- c_lflag p_tios :: IO CTcflag
- return ((c_lflag .&. fromIntegral const_echo) /= 0)
+ lflag <- c_lflag p_tios :: IO CTcflag
+ return ((lflag .&. fromIntegral const_echo) /= 0)
-setCooked :: Int -> Bool -> IO ()
+setCooked :: FD -> Bool -> IO ()
setCooked fd cooked =
tcSetAttr fd $ \ p_tios -> do
-- turn on/off ICANON
- c_lflag <- c_lflag p_tios :: IO CTcflag
- let new_c_lflag | cooked = c_lflag .|. (fromIntegral const_icanon)
- | otherwise = c_lflag .&. complement (fromIntegral const_icanon)
- poke_c_lflag p_tios (new_c_lflag :: CTcflag)
+ lflag <- c_lflag p_tios :: IO CTcflag
+ let new_lflag | cooked = lflag .|. (fromIntegral const_icanon)
+ | otherwise = lflag .&. complement (fromIntegral const_icanon)
+ poke_c_lflag p_tios (new_lflag :: CTcflag)
-- set VMIN & VTIME to 1/0 respectively
when (not cooked) $ do
c_cc <- ptr_c_cc p_tios
- let vmin = (c_cc `plusPtr` (fromIntegral const_vmin)) :: Ptr Word8
- vtime = (c_cc `plusPtr` (fromIntegral const_vtime)) :: Ptr Word8
- poke vmin 1
- poke vtime 0
+ let vmin = (c_cc `plusPtr` (fromIntegral const_vmin)) :: Ptr Word8
+ vtime = (c_cc `plusPtr` (fromIntegral const_vtime)) :: Ptr Word8
+ poke vmin 1
+ poke vtime 0
tcSetAttr :: FD -> (Ptr CTermios -> IO a) -> IO a
tcSetAttr fd fun = do
allocaBytes sizeof_termios $ \p_tios -> do
- throwErrnoIfMinus1Retry "tcSetAttr"
- (c_tcgetattr (fromIntegral fd) p_tios)
-
- -- Save a copy of termios, if this is a standard file descriptor.
- -- These terminal settings are restored in hs_exit().
- when (fd <= 2) $ do
- p <- get_saved_termios fd
- when (p == nullPtr) $ do
- saved_tios <- mallocBytes sizeof_termios
- copyBytes saved_tios p_tios sizeof_termios
- set_saved_termios fd saved_tios
-
- -- tcsetattr() when invoked by a background process causes the process
- -- to be sent SIGTTOU regardless of whether the process has TOSTOP set
- -- in its terminal flags (try it...). This function provides a
- -- wrapper which temporarily blocks SIGTTOU around the call, making it
- -- transparent.
- allocaBytes sizeof_sigset_t $ \ p_sigset -> do
- allocaBytes sizeof_sigset_t $ \ p_old_sigset -> do
- c_sigemptyset p_sigset
- c_sigaddset p_sigset const_sigttou
- c_sigprocmask const_sig_block p_sigset p_old_sigset
- r <- fun p_tios -- do the business
- throwErrnoIfMinus1Retry_ "tcSetAttr" $
- c_tcsetattr (fromIntegral fd) const_tcsanow p_tios
- c_sigprocmask const_sig_setmask p_old_sigset nullPtr
- return r
+ throwErrnoIfMinus1Retry "tcSetAttr"
+ (c_tcgetattr fd p_tios)
+
+#ifdef __GLASGOW_HASKELL__
+ -- Save a copy of termios, if this is a standard file descriptor.
+ -- These terminal settings are restored in hs_exit().
+ when (fd <= 2) $ do
+ p <- get_saved_termios fd
+ when (p == nullPtr) $ do
+ saved_tios <- mallocBytes sizeof_termios
+ copyBytes saved_tios p_tios sizeof_termios
+ set_saved_termios fd saved_tios
+#endif
+ -- tcsetattr() when invoked by a background process causes the process
+ -- to be sent SIGTTOU regardless of whether the process has TOSTOP set
+ -- in its terminal flags (try it...). This function provides a
+ -- wrapper which temporarily blocks SIGTTOU around the call, making it
+ -- transparent.
+ allocaBytes sizeof_sigset_t $ \ p_sigset -> do
+ allocaBytes sizeof_sigset_t $ \ p_old_sigset -> do
+ c_sigemptyset p_sigset
+ c_sigaddset p_sigset const_sigttou
+ c_sigprocmask const_sig_block p_sigset p_old_sigset
+ r <- fun p_tios -- do the business
+ throwErrnoIfMinus1Retry_ "tcSetAttr" $
+ c_tcsetattr fd const_tcsanow p_tios
+ c_sigprocmask const_sig_setmask p_old_sigset nullPtr
+ return r
+
+#ifdef __GLASGOW_HASKELL__
foreign import ccall unsafe "HsBase.h __hscore_get_saved_termios"
- get_saved_termios :: Int -> IO (Ptr CTermios)
+ get_saved_termios :: CInt -> IO (Ptr CTermios)
foreign import ccall unsafe "HsBase.h __hscore_set_saved_termios"
- set_saved_termios :: Int -> (Ptr CTermios) -> IO ()
+ set_saved_termios :: CInt -> (Ptr CTermios) -> IO ()
+#endif
#else
-- report that character until another character is input..odd.) This
-- latter feature doesn't sit too well with IO actions like IO.hGetLine..
-- consider yourself warned.
-setCooked :: Int -> Bool -> IO ()
+setCooked :: FD -> Bool -> IO ()
setCooked fd cooked = do
- x <- set_console_buffering (fromIntegral fd) (if cooked then 1 else 0)
+ x <- set_console_buffering fd (if cooked then 1 else 0)
if (x /= 0)
- then ioException (ioe_unk_error "setCooked" "failed to set buffering")
+ then ioError (ioe_unk_error "setCooked" "failed to set buffering")
else return ()
+ioe_unk_error :: String -> String -> IOException
ioe_unk_error loc msg
= IOError Nothing OtherError loc msg Nothing
-- Note: echoing goes hand in hand with enabling 'line input' / raw-ness
-- for Win32 consoles, hence setEcho ends up being the inverse of setCooked.
-setEcho :: Int -> Bool -> IO ()
+setEcho :: FD -> Bool -> IO ()
setEcho fd on = do
- x <- set_console_echo (fromIntegral fd) (if on then 1 else 0)
+ x <- set_console_echo fd (if on then 1 else 0)
if (x /= 0)
- then ioException (ioe_unk_error "setEcho" "failed to set echoing")
+ then ioError (ioe_unk_error "setEcho" "failed to set echoing")
else return ()
-getEcho :: Int -> IO Bool
+getEcho :: FD -> IO Bool
getEcho fd = do
- r <- get_console_echo (fromIntegral fd)
+ r <- get_console_echo fd
if (r == (-1))
- then ioException (ioe_unk_error "getEcho" "failed to get echoing")
+ then ioError (ioe_unk_error "getEcho" "failed to get echoing")
else return (r == 1)
foreign import ccall unsafe "consUtils.h set_console_buffering__"
-- ---------------------------------------------------------------------------
-- Turning on non-blocking for a file descriptor
-#ifndef mingw32_TARGET_OS
-
+setNonBlockingFD :: FD -> IO ()
+#if !defined(mingw32_HOST_OS) && !defined(__MINGW32__)
setNonBlockingFD fd = do
flags <- throwErrnoIfMinus1Retry "setNonBlockingFD"
- (c_fcntl_read (fromIntegral fd) const_f_getfl)
+ (c_fcntl_read fd const_f_getfl)
-- An error when setting O_NONBLOCK isn't fatal: on some systems
-- there are certain file handles on which this will fail (eg. /dev/null
-- on FreeBSD) so we throw away the return code from fcntl_write.
- c_fcntl_write (fromIntegral fd) const_f_setfl (flags .|. o_NONBLOCK)
+ unless (testBit flags (fromIntegral o_NONBLOCK)) $ do
+ c_fcntl_write fd const_f_setfl (fromIntegral (flags .|. o_NONBLOCK))
+ return ()
#else
-- bogus defns for win32
-setNonBlockingFD fd = return ()
+setNonBlockingFD _ = return ()
#endif
-- foreign imports
foreign import ccall unsafe "HsBase.h access"
- c_access :: CString -> CMode -> IO CInt
+ c_access :: CString -> CInt -> IO CInt
foreign import ccall unsafe "HsBase.h chmod"
c_chmod :: CString -> CMode -> IO CInt
-foreign import ccall unsafe "HsBase.h chdir"
- c_chdir :: CString -> IO CInt
-
foreign import ccall unsafe "HsBase.h close"
c_close :: CInt -> IO CInt
foreign import ccall unsafe "HsBase.h dup2"
c_dup2 :: CInt -> CInt -> IO CInt
-foreign import ccall unsafe "HsBase.h fstat"
+foreign import ccall unsafe "HsBase.h __hscore_fstat"
c_fstat :: CInt -> Ptr CStat -> IO CInt
-foreign import ccall unsafe "HsBase.h getcwd"
- c_getcwd :: Ptr CChar -> CInt -> IO (Ptr CChar)
-
foreign import ccall unsafe "HsBase.h isatty"
c_isatty :: CInt -> IO CInt
-foreign import ccall unsafe "HsBase.h lseek"
+#if defined(mingw32_HOST_OS) || defined(__MINGW32__)
+foreign import ccall unsafe "HsBase.h __hscore_lseek"
+ c_lseek :: CInt -> Int64 -> CInt -> IO Int64
+#else
+foreign import ccall unsafe "HsBase.h __hscore_lseek"
c_lseek :: CInt -> COff -> CInt -> IO COff
+#endif
foreign import ccall unsafe "HsBase.h __hscore_lstat"
lstat :: CString -> Ptr CStat -> IO CInt
-foreign import ccall unsafe "HsBase.h open"
+foreign import ccall unsafe "HsBase.h __hscore_open"
c_open :: CString -> CInt -> CMode -> IO CInt
foreign import ccall unsafe "HsBase.h opendir"
foreign import ccall unsafe "HsBase.h read"
c_read :: CInt -> Ptr CChar -> CSize -> IO CSsize
-foreign import ccall unsafe "HsBase.h readdir"
- c_readdir :: Ptr CDir -> IO (Ptr CDirent)
-
-foreign import ccall unsafe "dirUtils.h __hscore_renameFile"
- c_rename :: CString -> CString -> IO CInt
-
foreign import ccall unsafe "HsBase.h rewinddir"
c_rewinddir :: Ptr CDir -> IO ()
-foreign import ccall unsafe "HsBase.h rmdir"
- c_rmdir :: CString -> IO CInt
-
-foreign import ccall unsafe "HsBase.h stat"
+foreign import ccall unsafe "HsBase.h __hscore_stat"
c_stat :: CString -> Ptr CStat -> IO CInt
foreign import ccall unsafe "HsBase.h umask"
foreign import ccall unsafe "HsBase.h write"
c_write :: CInt -> Ptr CChar -> CSize -> IO CSsize
+foreign import ccall unsafe "HsBase.h __hscore_ftruncate"
+ c_ftruncate :: CInt -> COff -> IO CInt
+
foreign import ccall unsafe "HsBase.h unlink"
c_unlink :: CString -> IO CInt
-#ifndef mingw32_TARGET_OS
+foreign import ccall unsafe "HsBase.h getpid"
+ c_getpid :: IO CPid
+
+#if !defined(mingw32_HOST_OS) && !defined(__MINGW32__)
foreign import ccall unsafe "HsBase.h fcntl"
c_fcntl_read :: CInt -> CInt -> IO CInt
foreign import ccall unsafe "HsBase.h fcntl"
- c_fcntl_write :: CInt -> CInt -> CInt -> IO CInt
+ c_fcntl_write :: CInt -> CInt -> CLong -> IO CInt
foreign import ccall unsafe "HsBase.h fcntl"
c_fcntl_lock :: CInt -> CInt -> Ptr CFLock -> IO CInt
foreign import ccall unsafe "HsBase.h fork"
c_fork :: IO CPid
-foreign import ccall unsafe "HsBase.h getpid"
- c_getpid :: IO CPid
-
foreign import ccall unsafe "HsBase.h link"
c_link :: CString -> CString -> IO CInt
c_tcsetattr :: CInt -> CInt -> Ptr CTermios -> IO CInt
foreign import ccall unsafe "HsBase.h utime"
- c_utime :: CString -> Ptr CUtimbuf -> IO CMode
+ c_utime :: CString -> Ptr CUtimbuf -> IO CInt
foreign import ccall unsafe "HsBase.h waitpid"
c_waitpid :: CPid -> Ptr CInt -> CInt -> IO CPid
-#else
-foreign import ccall unsafe "HsBase.h _setmode"
- c__setmode :: CInt -> CInt -> IO CInt
-
--- /* Set "stdin" to have binary mode: */
--- result = _setmode( _fileno( stdin ), _O_BINARY );
--- if( result == -1 )
--- perror( "Cannot set mode" );
--- else
--- printf( "'stdin' successfully changed to binary mode\n" );
#endif
-- traversing directories
foreign import ccall unsafe "HsBase.h __hscore_o_nonblock" o_NONBLOCK :: CInt
foreign import ccall unsafe "HsBase.h __hscore_o_binary" o_BINARY :: CInt
-foreign import ccall unsafe "HsBase.h __hscore_s_isreg" s_isreg :: CMode -> Bool
-foreign import ccall unsafe "HsBase.h __hscore_s_ischr" s_ischr :: CMode -> Bool
-foreign import ccall unsafe "HsBase.h __hscore_s_isblk" s_isblk :: CMode -> Bool
-foreign import ccall unsafe "HsBase.h __hscore_s_isdir" s_isdir :: CMode -> Bool
-foreign import ccall unsafe "HsBase.h __hscore_s_isfifo" s_isfifo :: CMode -> Bool
+foreign import ccall unsafe "HsBase.h __hscore_s_isreg" c_s_isreg :: CMode -> CInt
+foreign import ccall unsafe "HsBase.h __hscore_s_ischr" c_s_ischr :: CMode -> CInt
+foreign import ccall unsafe "HsBase.h __hscore_s_isblk" c_s_isblk :: CMode -> CInt
+foreign import ccall unsafe "HsBase.h __hscore_s_isdir" c_s_isdir :: CMode -> CInt
+foreign import ccall unsafe "HsBase.h __hscore_s_isfifo" c_s_isfifo :: CMode -> CInt
+
+s_isreg :: CMode -> Bool
+s_isreg cm = c_s_isreg cm /= 0
+s_ischr :: CMode -> Bool
+s_ischr cm = c_s_ischr cm /= 0
+s_isblk :: CMode -> Bool
+s_isblk cm = c_s_isblk cm /= 0
+s_isdir :: CMode -> Bool
+s_isdir cm = c_s_isdir cm /= 0
+s_isfifo :: CMode -> Bool
+s_isfifo cm = c_s_isfifo cm /= 0
foreign import ccall unsafe "HsBase.h __hscore_sizeof_stat" sizeof_stat :: Int
foreign import ccall unsafe "HsBase.h __hscore_st_mtime" st_mtime :: Ptr CStat -> IO CTime
+#ifdef mingw32_HOST_OS
+foreign import ccall unsafe "HsBase.h __hscore_st_size" st_size :: Ptr CStat -> IO Int64
+#else
foreign import ccall unsafe "HsBase.h __hscore_st_size" st_size :: Ptr CStat -> IO COff
+#endif
foreign import ccall unsafe "HsBase.h __hscore_st_mode" st_mode :: Ptr CStat -> IO CMode
+foreign import ccall unsafe "HsBase.h __hscore_st_dev" st_dev :: Ptr CStat -> IO CDev
+foreign import ccall unsafe "HsBase.h __hscore_st_ino" st_ino :: Ptr CStat -> IO CIno
foreign import ccall unsafe "HsBase.h __hscore_echo" const_echo :: CInt
foreign import ccall unsafe "HsBase.h __hscore_tcsanow" const_tcsanow :: CInt
foreign import ccall unsafe "HsBase.h __hscore_f_getfl" const_f_getfl :: CInt
foreign import ccall unsafe "HsBase.h __hscore_f_setfl" const_f_setfl :: CInt
-#ifndef mingw32_TARGET_OS
+#if defined(HTYPE_TCFLAG_T)
foreign import ccall unsafe "HsBase.h __hscore_sizeof_termios" sizeof_termios :: Int
foreign import ccall unsafe "HsBase.h __hscore_sizeof_sigset_t" sizeof_sigset_t :: Int
foreign import ccall unsafe "HsBase.h __hscore_ptr_c_cc" ptr_c_cc :: Ptr CTermios -> IO (Ptr Word8)
#endif
-#ifndef mingw32_TARGET_OS
-foreign import ccall unsafe "HsBase.h __hscore_s_issock" s_issock :: CMode -> Bool
-#else
s_issock :: CMode -> Bool
-s_issock cmode = False
+#if !defined(mingw32_HOST_OS) && !defined(__MINGW32__)
+s_issock cmode = c_s_issock cmode /= 0
+foreign import ccall unsafe "HsBase.h __hscore_s_issock" c_s_issock :: CMode -> CInt
+#else
+s_issock _ = False
#endif
projects / ghc-base.git / blobdiff