Re: [PATCH 0/5 RFC] Add an interface to discover relationships between namespaces

From: W. Trevor King
Date: Tue Jul 26 2016 - 14:34:35 EST


On Tue, Jul 26, 2016 at 11:25:24AM -0700, Andrew Vagin wrote:
> Sure. If a process wants to compare two namespaces, it needs to get file
> descriptors for them (open /proc/PID/ns/XXX, use new ioctl-s, find a
> process which has them),
> and then it calls kcmp(pid1, pid2, KCMP_NSFD, ns_fd1, ns_fd2)

If you use the new ioctl-s to get ns_fd2, do you walk your local /proc
to find pid2?

Cheers,
Trevor

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