Messages in this thread |  | | | Date | Wed, 7 Jan 2009 13:02:32 -0800 | | From | "Ulrich Drepper" <> | | Subject | Re: [RESEND][RFC PATCH v2] waitfd | |
On Wed, Jan 7, 2009 at 12:53 PM, Roland McGrath <roland@redhat.com> wrote:
> Do we really need another one for this? How about using signalfd plus
> setting the child's exit_signal to a queuing (SIGRTMIN+n) signal instead of
> SIGCHLD? It's slightly more magical for the userland process to know to do
> that (fork -> clone SIGRTMIN). But compared to adding a syscall we don't
> really have to add, maybe better.
Since waitfd shouldn't consume the child termination notification
waitfd should be more widely usable than the wait*() interfaces.
I.e., it's not necessary to restrict the use to parents. Any process
with the same UID should be allowed to call waitfd. This would allow
some new user cases.
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