{-# 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,
{-# LINE 33 "libraries/unix/System/Posix/Directory/Common.hsc" #-}
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 dirp) = c_rewinddir dirp
foreign import ccall unsafe "rewinddir"
c_rewinddir :: Ptr CDir -> IO ()
closeDirStream :: DirStream -> IO ()
closeDirStream (DirStream dirp) = do
throwErrnoIfMinus1Retry_ "closeDirStream" (c_closedir 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 dirp) (DirStreamOffset off) =
c_seekdir dirp (fromIntegral 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 dirp) = do
off <- c_telldir dirp
return (DirStreamOffset (fromIntegral 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 fd) =
throwErrnoIfMinus1Retry_ "changeWorkingDirectoryFd" (c_fchdir fd)
foreign import ccall unsafe "fchdir"
c_fchdir :: CInt -> IO CInt