{-# LINE 1 "libraries/unix/System/Posix/Directory/Common.hsc" #-}
{-# LINE 2 "libraries/unix/System/Posix/Directory/Common.hsc" #-}
{-# LANGUAGE Safe #-}
{-# LINE 6 "libraries/unix/System/Posix/Directory/Common.hsc" #-}
module System.Posix.Directory.Common (
DirStream(..), CDir, CDirent, DirStreamOffset(..),
rewindDirStream,
closeDirStream,
{-# LINE 28 "libraries/unix/System/Posix/Directory/Common.hsc" #-}
seekDirStream,
{-# LINE 30 "libraries/unix/System/Posix/Directory/Common.hsc" #-}
{-# LINE 31 "libraries/unix/System/Posix/Directory/Common.hsc" #-}
tellDirStream,
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changeWorkingDirectoryFd,
) where
import System.Posix.Types
import Foreign
import Foreign.C
newtype DirStream = DirStream (Ptr CDir)
data {-# CTYPE "DIR" #-} CDir
data {-# CTYPE "struct dirent" #-} CDirent
rewindDirStream :: DirStream -> IO ()
rewindDirStream :: DirStream -> IO ()
rewindDirStream (DirStream Ptr CDir
dirp) = Ptr CDir -> IO ()
c_rewinddir Ptr CDir
dirp
foreign import ccall unsafe "rewinddir"
c_rewinddir :: Ptr CDir -> IO ()
closeDirStream :: DirStream -> IO ()
closeDirStream :: DirStream -> IO ()
closeDirStream (DirStream Ptr CDir
dirp) = do
String -> IO CInt -> IO ()
forall a. (Eq a, Num a) => String -> IO a -> IO ()
throwErrnoIfMinus1Retry_ String
"closeDirStream" (Ptr CDir -> IO CInt
c_closedir Ptr CDir
dirp)
foreign import ccall unsafe "closedir"
c_closedir :: Ptr CDir -> IO CInt
newtype DirStreamOffset = DirStreamOffset COff
{-# LINE 65 "libraries/unix/System/Posix/Directory/Common.hsc" #-}
seekDirStream :: DirStream -> DirStreamOffset -> IO ()
seekDirStream :: DirStream -> DirStreamOffset -> IO ()
seekDirStream (DirStream Ptr CDir
dirp) (DirStreamOffset COff
off) =
Ptr CDir -> CLong -> IO ()
c_seekdir Ptr CDir
dirp (COff -> CLong
forall a b. (Integral a, Num b) => a -> b
fromIntegral COff
off)
foreign import ccall unsafe "seekdir"
c_seekdir :: Ptr CDir -> CLong -> IO ()
{-# LINE 72 "libraries/unix/System/Posix/Directory/Common.hsc" #-}
{-# LINE 74 "libraries/unix/System/Posix/Directory/Common.hsc" #-}
tellDirStream :: DirStream -> IO DirStreamOffset
tellDirStream :: DirStream -> IO DirStreamOffset
tellDirStream (DirStream Ptr CDir
dirp) = do
CLong
off <- Ptr CDir -> IO CLong
c_telldir Ptr CDir
dirp
DirStreamOffset -> IO DirStreamOffset
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (COff -> DirStreamOffset
DirStreamOffset (CLong -> COff
forall a b. (Integral a, Num b) => a -> b
fromIntegral CLong
off))
foreign import ccall unsafe "telldir"
c_telldir :: Ptr CDir -> IO CLong
{-# LINE 82 "libraries/unix/System/Posix/Directory/Common.hsc" #-}
changeWorkingDirectoryFd :: Fd -> IO ()
changeWorkingDirectoryFd :: Fd -> IO ()
changeWorkingDirectoryFd (Fd CInt
fd) =
String -> IO CInt -> IO ()
forall a. (Eq a, Num a) => String -> IO a -> IO ()
throwErrnoIfMinus1Retry_ String
"changeWorkingDirectoryFd" (CInt -> IO CInt
c_fchdir CInt
fd)
foreign import ccall unsafe "fchdir"
c_fchdir :: CInt -> IO CInt