[Haskell-cafe] Windows: openFile gives permission denied when file in use

[Iustin Pop]

On Thu, Dec 29, 2011 at 11:49:11AM +0000, Andrew Coppin wrote:
> On 29/12/2011 04:29 AM, Antoine Latter wrote:
> >On Wed, Dec 28, 2011 at 3:52 PM, Michael Snoyman<michael at snoyman.com>  wrote:
> >>Hi all,
> >>
> >>I just received a bug report from a client that, when an input file is
> >>open in FrameMaker, my program gives a "permission denied error". This
> >>bug is reproducible with a simple Haskell program:
> >>
> >
> >This bug and its discussion is similar, but not identical:
> >http://hackage.haskell.org/trac/ghc/ticket/4363
> 
> This one has been rumbling on for ages. As others have said, the
> Report demands that locking occur, which is probably a mistake. The
> daft thing is, apparently Linux doesn't really support locking, so
> on that platform these types of thing all work fine, and only on
> Windows, which does and always has supported propper locking, people
> get these errors. And yet, many people seem surprised to hear that
> Windows can actually turn off the locking; they seem completely
> unaware of the extensive and highly flexible locking facilities that
> Windows provides. Every time I hear "oh, I don't think Windows can
> handle that", I sigh with resignation.

Sorry to say, but it seems you yourself are unaware of the "extensive
and highly flexible" locking facilities on Linux :) The defaults on
Linux are advisory locking, not mandatory, but claiming Linux doesn't
support locking is plain wrong.

regards,
iustin