:: Maybe Fd	Optional directory file descriptor
-> PosixPath	Pathname to open
-> OpenFlags	Append, exclusive, truncate, etc.
-> Maybe FileMode	Create mode
-> IO Fd

Open a file relative to an optional directory file descriptor.

Note: In Haskell, using an fd directly for IO may be problematic as blocking file system operations on the file might block the capability and GC for "unsafe" calls. "safe" calls may be more expensive. Also, you may have to synchronize concurrent access via multiple threads.

close :: Fd -> IO () Source #

Handle based

openFile :: PosixPath -> IOMode -> IO Handle Source #

Like openFile in base package but using Path instead of FilePath. Use hSetBinaryMode on the handle if you want to use binary mode.

withFile :: PosixPath -> IOMode -> (Handle -> IO r) -> IO r Source #

Like withFile in base package but using Path instead of FilePath. Use hSetBinaryMode on the handle if you want to use binary mode.

openBinaryFile :: PosixPath -> IOMode -> IO Handle Source #

Like openBinaryFile in base package but using Path instead of FilePath.

withBinaryFile :: PosixPath -> IOMode -> (Handle -> IO r) -> IO r Source #

Like withBinaryFile in base package but using Path instead of FilePath.

data Fd #

Instances

Instances details

Storable Fd
Instance details Defined in System.Posix.Types Methods sizeOf :: Fd -> Int # alignment :: Fd -> Int # peekElemOff :: Ptr Fd -> Int -> IO Fd # pokeElemOff :: Ptr Fd -> Int -> Fd -> IO () # peekByteOff :: Ptr b -> Int -> IO Fd # pokeByteOff :: Ptr b -> Int -> Fd -> IO () # peek :: Ptr Fd -> IO Fd # poke :: Ptr Fd -> Fd -> IO () #
Bits Fd
Instance details Defined in System.Posix.Types Methods (.&.) :: Fd -> Fd -> Fd # (.\|.) :: Fd -> Fd -> Fd # xor :: Fd -> Fd -> Fd # complement :: Fd -> Fd # shift :: Fd -> Int -> Fd # rotate :: Fd -> Int -> Fd # zeroBits :: Fd # bit :: Int -> Fd # setBit :: Fd -> Int -> Fd # clearBit :: Fd -> Int -> Fd # complementBit :: Fd -> Int -> Fd # testBit :: Fd -> Int -> Bool # bitSizeMaybe :: Fd -> Maybe Int # bitSize :: Fd -> Int # isSigned :: Fd -> Bool # shiftL :: Fd -> Int -> Fd # unsafeShiftL :: Fd -> Int -> Fd # shiftR :: Fd -> Int -> Fd # unsafeShiftR :: Fd -> Int -> Fd # rotateL :: Fd -> Int -> Fd # rotateR :: Fd -> Int -> Fd # popCount :: Fd -> Int #
FiniteBits Fd
Instance details Defined in System.Posix.Types Methods finiteBitSize :: Fd -> Int # countLeadingZeros :: Fd -> Int # countTrailingZeros :: Fd -> Int #
Bounded Fd
Instance details Defined in System.Posix.Types Methods minBound :: Fd # maxBound :: Fd #
Enum Fd
Instance details Defined in System.Posix.Types Methods succ :: Fd -> Fd # pred :: Fd -> Fd # toEnum :: Int -> Fd # fromEnum :: Fd -> Int # enumFrom :: Fd -> [Fd] # enumFromThen :: Fd -> Fd -> [Fd] # enumFromTo :: Fd -> Fd -> [Fd] # enumFromThenTo :: Fd -> Fd -> Fd -> [Fd] #
Ix Fd
Instance details Defined in System.Posix.Types Methods range :: (Fd, Fd) -> [Fd] # index :: (Fd, Fd) -> Fd -> Int # unsafeIndex :: (Fd, Fd) -> Fd -> Int # inRange :: (Fd, Fd) -> Fd -> Bool # rangeSize :: (Fd, Fd) -> Int # unsafeRangeSize :: (Fd, Fd) -> Int #
Num Fd
Instance details Defined in System.Posix.Types Methods (+) :: Fd -> Fd -> Fd # (-) :: Fd -> Fd -> Fd # (*) :: Fd -> Fd -> Fd # negate :: Fd -> Fd # abs :: Fd -> Fd # signum :: Fd -> Fd # fromInteger :: Integer -> Fd #
Read Fd
Instance details Defined in System.Posix.Types Methods readsPrec :: Int -> ReadS Fd # readList :: ReadS [Fd] # readPrec :: ReadPrec Fd # readListPrec :: ReadPrec [Fd] #
Integral Fd
Instance details Defined in System.Posix.Types Methods quot :: Fd -> Fd -> Fd # rem :: Fd -> Fd -> Fd # div :: Fd -> Fd -> Fd # mod :: Fd -> Fd -> Fd # quotRem :: Fd -> Fd -> (Fd, Fd) # divMod :: Fd -> Fd -> (Fd, Fd) # toInteger :: Fd -> Integer #
Real Fd
Instance details Defined in System.Posix.Types Methods toRational :: Fd -> Rational #
Show Fd
Instance details Defined in System.Posix.Types Methods showsPrec :: Int -> Fd -> ShowS # show :: Fd -> String # showList :: [Fd] -> ShowS #
Eq Fd
Instance details Defined in System.Posix.Types Methods (==) :: Fd -> Fd -> Bool # (/=) :: Fd -> Fd -> Bool #
Ord Fd
Instance details Defined in System.Posix.Types Methods compare :: Fd -> Fd -> Ordering # (<) :: Fd -> Fd -> Bool # (<=) :: Fd -> Fd -> Bool # (>) :: Fd -> Fd -> Bool # (>=) :: Fd -> Fd -> Bool # max :: Fd -> Fd -> Fd # min :: Fd -> Fd -> Fd #