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SubjectRe: [RFC] Bug in mkdir(2)


On Wed, 16 Jun 1999, Linus Torvalds wrote:

>
>
> On Wed, 16 Jun 1999, Alexander Viro wrote:
> >
> > In other words, if foo is a dangling symlink mkdir("foo/") will merrily
> > follow it. Which it shouldn't.
>
> Why? I think the follows symlink behaviour is the right one, and is
> consistent with "open" etc. Are there any pressing reasons to not do it?

The same as for mkdir("foo")? mkdir behaves like open( ,O_CREAT|O_EXCL, );
Which doesn't follow links, by exactly the same reasons. Think of
ln -sf <something_interesting_that_should_not_exist> /tmp/foo012345
when root-owned process is expected to create/mkdir/mknod/rename to
/tmp/foo12345.

Just to clarify: mkdir("foo") doesn't follow the link. mkdir("foo/") does.


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