Re: creating backups in temporary directories

[David Kastrup]

Sven Joachim <address@hidden> writes:

> Stefan Monnier <address@hidden> writes:
>
>> Worse yet: creating backup files in /tmp would be a security hole:
>> some other user seeing you're currently editing /tmp/foo could
>> create a symlink /tmp/foo~ to some interesting place and then when
>> you save your file the backup could be placed at that interesting
>> place chosen by the attacker.
>
> Really?  I've just tried this (with a symlink in ~/tmp instead of
> /tmp), and Emacs removed the symlink for the backup before saving
> the file.  Are there circumstances where it might not do this?

Can you spell "race condition"?

-- 
David Kastrup, Kriemhildstr. 15, 44793 Bochum