Re: locking utmp
On Tue, 19 Mar 2002 03:34, Steve Langasek wrote:
> It's a read lock, isn't it? In which case, does it really matter how
> many bytes it's locking? (Unless, perhaps, requesting a read lock on
If it keeps the read lock for an extended period of time and locks out other
processes then it could allow a local DOS attack.
> If the question is really "why does it want a read lock at all?", I
> don't think I have an answer for that one.
Getting a read lock on the utmp file before reading it is reasonable. Not
sure why it needs to read it at all though. Must be something in PAM.
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