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