On Fri, Jan 16, 2009 at 11:13:04AM +0530, Manish Katiyar wrote:
> If the unlink function is not defined by filesystem, then I think it
> is better to return operation not supported rather than saying
> permission denied, which can come from lot other places and keep user
> guessing what went wrong. I came across this while testing one of my
> small modules.
-EOPNOTSUPP is not a valid return value from unlink(). It's also
documented in the manpage:
EPERM (Linux only)
The file system does not allow unlinking of files.
In general, you should never use -EOPNOTSUPP. It's only for use by
networking STREAMS.
--
Matthew Wilcox Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours. We can't possibly take such
a retrograde step."
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