rm/unlink and `how to find out who i am'

Joerg Sonnenberger joerg at britannica.bec.de
Sat Apr 2 10:53:19 PST 2005

On Sat, Apr 02, 2005 at 06:42:06PM +0000, Rahul Siddharthan wrote:
> >> Why should that `not happen here'? Neither unlink nor rm should
> >> be called as unlink////. Perhaps I'm misunderstanding.
> >
> >That's exactly the reason why. It doesn't matter if they are called
> >/tmp/unlink////, because some stupid caller didn't include the final
> >rm (/tmp/unlink////rm).
> I thought a slash (/) is the one character that cannot be part of a
> filename?  So unlink//// cannot possibly be the name by which rm is
> being called, surely?

argv[0] is set by the caller, not the kernel. It can through
(almost) any junk in there.


More information about the Kernel mailing list