--
-- 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.
-- #hide
module System.Posix.Internals where
-#include "ghcconfig.h"
#include "HsBaseConfig.h"
import Control.Monad
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)
c_size <- st_size p_stat :: IO COff
return (fromIntegral c_size)
-data FDType = Directory | Stream | RegularFile
+data FDType = Directory | Stream | RegularFile | RawDevice
deriving (Eq)
fileType :: FilePath -> IO FDType
-- 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 -> IO FDType
fdType fd =
allocaBytes sizeof_stat $ \ p_stat -> do
throwErrnoIfMinus1Retry "fdType" $
- c_fstat (fromIntegral fd) p_stat
+ c_fstat fd p_stat
statGetType p_stat
statGetType p_stat = do
| s_isfifo c_mode || s_issock c_mode || s_ischr c_mode
-> 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 = IOError Nothing UnsupportedOperation "fdType"
"unknown file type" Nothing
-#if defined(mingw32_TARGET_OS) || defined(__MINGW32__)
+#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 -> IO IOMode
fdGetMode fd = do
-#if defined(mingw32_TARGET_OS) || defined(__MINGW32__)
+#if defined(mingw32_HOST_OS) || defined(__MINGW32__)
-- XXX: this code is *BROKEN*, _setmode only deals with O_TEXT/O_BINARY
flags1 <- throwErrnoIfMinus1Retry "fdGetMode"
- (c__setmode (fromIntegral fd) (fromIntegral o_WRONLY))
+ (c__setmode fd (fromIntegral o_WRONLY))
flags <- throwErrnoIfMinus1Retry "fdGetMode"
- (c__setmode (fromIntegral fd) (fromIntegral flags1))
+ (c__setmode fd (fromIntegral flags1))
#else
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
-- ---------------------------------------------------------------------------
-- 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
#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
| otherwise = c_lflag .&. complement (fromIntegral const_echo)
poke_c_lflag p_tios (new_c_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)
-setCooked :: Int -> Bool -> IO ()
+setCooked :: FD -> Bool -> IO ()
setCooked fd cooked =
tcSetAttr fd $ \ p_tios -> do
tcSetAttr fd fun = do
allocaBytes sizeof_termios $ \p_tios -> do
throwErrnoIfMinus1Retry "tcSetAttr"
- (c_tcgetattr (fromIntegral fd) p_tios)
+ (c_tcgetattr fd p_tios)
#ifdef __GLASGOW_HASKELL__
-- Save a copy of termios, if this is a standard file descriptor.
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_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 ioError (ioe_unk_error "setCooked" "failed to set buffering")
else return ()
-- 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 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 ioError (ioe_unk_error "getEcho" "failed to get echoing")
else return (r == 1)
-- ---------------------------------------------------------------------------
-- Turning on non-blocking for a file descriptor
-#if !defined(mingw32_TARGET_OS) && !defined(__MINGW32__)
+#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.
unless (testBit flags (fromIntegral o_NONBLOCK)) $ do
- c_fcntl_write (fromIntegral fd) const_f_setfl (flags .|. o_NONBLOCK)
+ c_fcntl_write fd const_f_setfl (flags .|. o_NONBLOCK)
return ()
#else
foreign import ccall unsafe "HsBase.h getpid"
c_getpid :: IO CPid
-#if !defined(mingw32_TARGET_OS) && !defined(__MINGW32__)
+#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 __hscore_ptr_c_cc" ptr_c_cc :: Ptr CTermios -> IO (Ptr Word8)
#endif
-#if !defined(mingw32_TARGET_OS) && !defined(__MINGW32__)
+#if !defined(mingw32_HOST_OS) && !defined(__MINGW32__)
foreign import ccall unsafe "HsBase.h __hscore_s_issock" s_issock :: CMode -> Bool
#else
s_issock :: CMode -> Bool