Copyright	(c) The University of Glasgow 2014
License	BSD-style (see the file LICENSE)
Maintainer	libraries@haskell.org
Stability	provisional
Portability	non-portable (requires POSIX)
Safe Haskell	Safe
Language	Haskell2010

System.Posix.Fcntl

Contents

Description

POSIX file control support

Since: unix-2.7.1.0

Synopsis

File allocation

Advice parameter for fileAdvise operation.

For more details, see documentation of posix_fadvise(2).

Since: unix-2.7.1.0

Constructors

Instances details

Eq Advice Source #
Instance details Defined in System.Posix.Fcntl Methods (==) :: Advice -> Advice -> Bool # (/=) :: Advice -> Advice -> Bool #

fileAdvise :: Fd -> FileOffset -> FileOffset -> Advice -> IO () Source #

Performs posix_fadvise(2) operation on file-descriptor.

If platform does not provide posix_fadvise(2) fileAdvise becomes a no-op.

(use #if HAVE_POSIX_FADVISE CPP guard to detect availability)

Since: unix-2.7.1.0

fileAllocate :: Fd -> FileOffset -> FileOffset -> IO () Source #

Performs posix_fallocate(2) operation on file-descriptor.

Throws IOError ("unsupported operation") if platform does not provide posix_fallocate(2).

(use #if HAVE_POSIX_FALLOCATE CPP guard to detect availability).

Since: unix-2.7.1.0