Bug#343085: exim4: Exim SMTP_AUTH hangs since today...

[Florian Weimer]

* Sven Hartge:

> Um 09:57 Uhr am 30.01.06 schrieb Florian Weimer:
>> * Sven Hartge:
>
>>>> According to my tests, it doesn't.  After some discussion with the GNU 
>>>> TLS developers, I think it does the right thing and reads from 
>>>> /dev/urandom only.
>>> Are you sure?
>> Pretty much.  Exim does not read from /dev/random according to strace.
>
> lsof said otherwise. Besides, if it read its seed from urandom, then it 
> should not block on a lack of entropy, shouldn't it?

Okay, sarge indeed uses /dev/random:

9576  access("/dev/random", R_OK)       = 0
9576  access("/dev/urandom", R_OK)      = 0
9576  open("/dev/random", O_RDONLY)     = 8

I'm going to do a bit of source code archeology to find out why.