Lennart Poettering schrob: > > ...and you're explicitly disallowing cross-user shm transfer. :( > > I guess I'll have to figure out the security implications of messing > > with that. > > Well, the story goes like this: we need to make sure that a user A > cannot trigger a SIGBUS in processes by user B simply by ftruncating an > shm region A controls and B maps and accesses. Since handling SIGBUS > from a library context is ugly to impossible we hence generally don't > allow shm data transfer between users.
Thanks for the explanation. But this is only a DoS, isn't it? A can
terminate B's audio applications. That's something I could happily live
with, particularly as it means one of my personalities would need to
use a malicious (mis-)implementation of the PA protocol.
But of course, I see how you wouldn't want to oficcially distribute
that, so I'll probably be compiling my own version of PA in the future.
The joys of Free Software. :)
Thanks again,
Jan
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