Re: Critical (or equivalent) section in Userland?

[Warner Losh]

In message <[EMAIL PROTECTED]> Karl Pielorz writes:
: However, 'killall -SIGSTOP sendmail' - appears to work very nicely... With a
: 'killall -SIGCONT sendmail' putting things back to normal. I'm also doing the
: stop twice for good measure incase anything was forking at the time.

No need to stop twice.

: I guess only time will tell, but the signal idea seems the best so far,
: considering the other restrictions :)

Well, you still have the same problem as before, you've just made it
harder to exploit.  Namely, if sendmail fires up and reads one of the
set of files, then you stop it, and start it again and reads the rest
it is little different than the problem you had before.

I would suspect it is much less likely to happen, however.

Warner


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