Re: [PATCH] override RLIMIT_SIGPENDING for non-RT signals

[Roland McGrath <roland@redhat.com>]

> * Roland McGrath (roland@redhat.com) wrote:
> > Indeed, I think your patch does not go far enough.  I can read POSIX to say
> > that the siginfo_t data must be available when `kill' was used, as well.
> 
> How?  I only see reference to filling in SI_USER for rt signals?
> Just curious...(I've only got SuSv3 and some crusty old POSIX rt docs).

There is stuff about a SA_SIGINFO signal handler's siginfo_t argument
"shall contain" the various specified information like si_pid/si_uid values
for a kill caller.

> Good point.  Although it's RLIMIT_SIGPENDING + (31 * user_nprocs).  So
> that could be 31 * 8k, for example.

And a "good point" back to you, sir!  I think the right way to think about
this in terms of resource consumption is that sizeof(struct sigqueue)*31 is
part of the potential per-process overhead that make up the consumption
units one should have in mind when choosing how to set the RLIMIT_NPROC limit.


Thanks,
Roland