Re: PROBLEM: hfsplus filesystem allows opendir() on plain files

[Al Viro <viro@ZenIV.linux.org.uk>]

On Fri, Dec 05, 2008 at 10:32:26PM -0800, Brad Boyer wrote:
> I personally don't care about the feature myself. I'm not sure what
> good it does anyway, and I don't know of anything on Linux that
> uses it. However, I also wasn't the one that added it. My original
> version of hfsplus did not have any way to access them. Maybe it's
> best to just remove it and see who complains about it. I do want to
> point out that I don't maintain that code anymore and don't have
> time to do that work myself. As far as I know, hfsplus is officially
> unmaintained these days.
> 
> Just as a side note, hfs has the same feature. The two modules are
> basically the same code these days.

You know what...  I thought that HFS+ did not support links; looking at
the source, it appears that hardlinks *are* supported and that brings
all the deadlocks into the game, same as we had in reiser4 case.

Which is to say, this stuff *must* go.  In case of HFS it's obnoxious,
but not immediately letal.  In case of HFS+ it's an instant DoS.