Re: [PATCH] Reporting file descriptors created by pipe and socketpair
On Tue, Sep 12, 2006 at 02:25:50PM -0400, John D. Ramsdell wrote:
Alexander Viro <aviro(a)redhat.com> writes:
> c) just how do you propose to do "tracking file descriptors"?
We aren't proposing to track file descriptors. We already have code
that does that
Indeed? And how, pray tell, do you handle e.g. processes A and B sending
SCM_RIGHTS datagrams to C at the same moment? With data part containing
the indication which process had sent them, so C can handle them just
fine and do that in different ways depending on the origin of datagram.
Note that looking at the timestamps will not help you at all - you can
get
A enters sendmsg(2)
B enters sendmsg(2)
B puts datagram into queue
A puts datagram into queue
A leaves sendmsg(2)
B leaves sendmsg(2)
quite easily.