[Haskell-cafe] trying to use unix's openFD ..

Brandon S. Allbery KF8NH allbery at ece.cmu.edu
Wed Jan 30 23:25:48 EST 2008

On Jan 30, 2008, at 23:23 , Galchin Vasili wrote:

> I am trying to do the following on RedHat RHEL 5.0:
> main = do
>     fs <- openFd "/dev/cdrom" ReadOnly (Just ???) defaultFileFlags
>     putStrLn (show fd)
> what should (Just ???) be ???

I think you can pass Nothing instead of a Just, since that argument  
is ignored when opening read only.  If you feel you need to pass  
something, use nullFileMode.

brandon s. allbery [solaris,freebsd,perl,pugs,haskell] allbery at kf8nh.com
system administrator [openafs,heimdal,too many hats] allbery at ece.cmu.edu
electrical and computer engineering, carnegie mellon university    KF8NH

More information about the Haskell-Cafe mailing list