-{-# OPTIONS -optc-DNON_POSIX_SOURCE #-}
+{-# OPTIONS -fno-implicit-prelude #-}
-- ---------------------------------------------------------------------------
--- $Id: PrelPosix.hsc,v 1.1 2001/05/18 16:54:05 simonmar Exp $
+-- $Id: PrelPosix.hsc,v 1.13 2001/08/23 10:36:50 sewardj Exp $
--
-- POSIX support layer for the standard libraries
--
+-- Non-posix compliant in order to support the following features:
+-- * S_ISSOCK (no sockets in POSIX)
module PrelPosix where
+-- See above comment for non-Posixness reasons.
+-- #include "PosixSource.h"
+
#include "HsStd.h"
-import Monad
+import PrelBase
+import PrelNum
+import PrelReal
+import PrelMaybe
import PrelCString
import PrelPtr
import PrelWord
import PrelMarshalUtils
import PrelBits
import PrelIOBase
+import Monad
-- ---------------------------------------------------------------------------
type CMode = #type mode_t
type COff = #type off_t
type CPid = #type pid_t
-#ifndef mingw32_TARGET_OS
+
+#ifdef mingw32_TARGET_OS
+type CSsize = #type size_t
+#else
type CGid = #type gid_t
type CNlink = #type nlink_t
type CSsize = #type ssize_t
ioe_unknownfiletype = IOError Nothing UnsupportedOperation "fdType"
"unknown file type" Nothing
-foreign import "s_isreg_wrap" s_isreg :: CMode -> Bool
-#def inline int s_isreg_wrap(m) { return S_ISREG(m); }
+foreign import "s_isreg_PrelPosix_wrap" unsafe s_isreg :: CMode -> Bool
+#def inline int s_isreg_PrelPosix_wrap(m) { return S_ISREG(m); }
+
+foreign import "s_isdir_PrelPosix_wrap" unsafe s_isdir :: CMode -> Bool
+#def inline int s_isdir_PrelPosix_wrap(m) { return S_ISDIR(m); }
-foreign import "s_isdir_wrap" s_isdir :: CMode -> Bool
-#def inline int s_isdir_wrap(m) { return S_ISDIR(m); }
+foreign import "s_isfifo_PrelPosix_wrap" unsafe s_isfifo :: CMode -> Bool
+#def inline int s_isfifo_PrelPosix_wrap(m) { return S_ISFIFO(m); }
-foreign import "s_isfifo_wrap" s_isfifo :: CMode -> Bool
-#def inline int s_isfifo_wrap(m) { return S_ISFIFO(m); }
+#ifndef mingw32_TARGET_OS
+foreign import "s_issock_PrelPosix_wrap" unsafe s_issock :: CMode -> Bool
+#def inline int s_issock_PrelPosix_wrap(m) { return S_ISSOCK(m); }
+#else
+s_issock :: CMode -> Bool
+s_issock cmode = False
+#endif
-foreign import "s_issock_wrap" s_issock :: CMode -> Bool
-#def inline int s_issock_wrap(m) { return S_ISSOCK(m); }
+-- 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 ()
-- ---------------------------------------------------------------------------
-- Terminal-related stuff
fdIsTTY :: Int -> IO Bool
fdIsTTY fd = c_isatty (fromIntegral fd) >>= return.toBool
+#ifndef mingw32_TARGET_OS
+
type Termios = ()
setEcho :: Int -> Bool -> IO ()
(#poke struct termios, c_lflag) p_tios (new_c_lflag :: CTcflag)
-- set VMIN & VTIME to 1/0 respectively
- when cooked $
- do let c_cc = (#ptr struct termios, c_cc) p_tios
- vmin = c_cc `plusPtr` (#const VMIN) :: Ptr Word8
+ when cooked $ do
+ let c_cc = (#ptr struct termios, c_cc) p_tios
+ vmin = c_cc `plusPtr` (#const VMIN) :: Ptr Word8
vtime = c_cc `plusPtr` (#const VTIME) :: Ptr Word8
poke vmin 1
poke vtime 0
-
+
tcSetAttr fd (#const TCSANOW) p_tios
-- tcsetattr() when invoked by a background process causes the process
c_tcsetattr (fromIntegral fd) options p_tios
c_sigprocmask (#const SIG_SETMASK) p_old_sigset nullPtr
+#else
+
+-- bogus defns for win32
+setCooked :: Int -> Bool -> IO ()
+setCooked fd cooked = return ()
+
+setEcho :: Int -> Bool -> IO ()
+setEcho fd on = return ()
+
+getEcho :: Int -> IO Bool
+getEcho fd = return False
+
+#endif
+
-- ---------------------------------------------------------------------------
-- Turning on non-blocking for a file descriptor
+#ifndef mingw32_TARGET_OS
+
setNonBlockingFD fd = do
flags <- throwErrnoIfMinus1Retry "setNonBlockingFD"
(fcntl_read (fromIntegral fd) (#const F_GETFL))
throwErrnoIfMinus1Retry "setNonBlockingFD"
(fcntl_write (fromIntegral fd)
(#const F_SETFL) (flags .|. #const O_NONBLOCK))
+#else
+
+-- bogus defns for win32
+setNonBlockingFD fd = return ()
+
+#endif
-- -----------------------------------------------------------------------------
-- foreign imports
o_APPEND = (#const O_APPEND) :: CInt
o_CREAT = (#const O_CREAT) :: CInt
o_EXCL = (#const O_EXCL) :: CInt
-o_NOCTTY = (#const O_NOCTTY) :: CInt
o_TRUNC = (#const O_TRUNC) :: CInt
+
+#ifdef mingw32_TARGET_OS
+o_NOCTTY = 0 :: CInt
+o_NONBLOCK = 0 :: CInt
+#else
+o_NOCTTY = (#const O_NOCTTY) :: CInt
o_NONBLOCK = (#const O_NONBLOCK) :: CInt
+#endif
+
+#ifdef HAVE_O_BINARY
+o_BINARY = (#const O_BINARY) :: CInt
+#endif
+
+foreign import "isatty" unsafe
+ c_isatty :: CInt -> IO CInt
foreign import "close" unsafe
c_close :: CInt -> IO CInt
+foreign import "lseek" unsafe
+ c_lseek :: CInt -> COff -> CInt -> IO COff
+
+foreign import "write" unsafe
+ c_write :: CInt -> Ptr CChar -> CSize -> IO CSsize
+
+foreign import "read" unsafe
+ c_read :: CInt -> Ptr CChar -> CSize -> IO CSsize
+
+#ifndef mingw32_TARGET_OS
foreign import "fcntl" unsafe
fcntl_read :: CInt -> CInt -> IO CInt
foreign import "fork" unsafe
fork :: IO CPid
-foreign import "isatty" unsafe
- c_isatty :: CInt -> IO CInt
-
-foreign import "lseek" unsafe
- c_lseek :: CInt -> COff -> CInt -> IO COff
-
-foreign import "read" unsafe
- c_read :: CInt -> Ptr CChar -> CSize -> IO CSsize
-
-foreign import "sigemptyset" unsafe
+foreign import "sigemptyset_PrelPosix_wrap" unsafe
c_sigemptyset :: Ptr CSigset -> IO ()
+#def inline void sigemptyset_PrelPosix_wrap(sigset_t *set) { sigemptyset(set); }
foreign import "sigaddset" unsafe
c_sigaddset :: Ptr CSigset -> CInt -> IO ()
foreign import "tcsetattr" unsafe
c_tcsetattr :: CInt -> CInt -> Ptr Termios -> IO CInt
+foreign import "unlink" unsafe
+ c_unlink :: CString -> IO CInt
+
foreign import "waitpid" unsafe
c_waitpid :: CPid -> Ptr CInt -> CInt -> IO CPid
-
-foreign import "write" unsafe
- c_write :: CInt -> Ptr CChar -> CSize -> IO CSsize
-
+#endif
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