Re: [PATCH]Fix bug:rmdir could remove current working directory

[Mingming cao <cmm@us.ibm.com>]

Linus Torvalds wrote:
> 
> In article <3BC4EFFC.42ACE59E@us.ibm.com>,
> Mingming cao  <cmm@us.ibm.com> wrote:
> >
> >I thought about the case when rmdir() on the cwd of other processes,
> >but, as you said, that is implementation dependent. However rmdir() on
> >"." does returns EBUSY error.
> 
> That's a completely different thing, though - even though the difference
> is rather subtle.
> 
> You can remove pretty much any empty directory (if the filesystem
> permits it - some don't). HOWEVER, you can not use "." as the final
> component of your pathname.
> 
> It has nothing to do with home directory: you can try just doing
> 
>         mkdir /tmp/hello
>         rmdir /tmp/hello/.
> 
> and you'll get the same error (and it _should_ return EINVAL, not EBUSY.
> EBUSY is for the "this filesystem doesn't allow you to remove a
> directory that is in use" case).
> 
>                         Linus

I misunderstanded the rule.  Thanks for clarifying!

-- 
Mingming Cao