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 |
POSIX file control support
Since: unix-2.7.1.0
Synopsis
- data Advice
- fileAdvise :: Fd -> FileOffset -> FileOffset -> Advice -> IO ()
- fileAllocate :: Fd -> FileOffset -> FileOffset -> IO ()
File allocation
Advice parameter for fileAdvise
operation.
For more details, see documentation of posix_fadvise(2)
.
Since: unix-2.7.1.0
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