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SubjectRe: [RCF] [PATCH] unprivileged mount/umount
Miklos Szeredi wrote:
> > # Make a named namespace.
> > NSNAME='fred'
> > mkdir /var/namespaces/$NSNAME
> > run_in_new_namespace mount -t bind / /var/namespaces/$NSNAME
> That's not going to work, since the mount will only affect the new
> namespace.

Ah, good point. I'm still thinking in terms of shared subtrees, where
it might work.

> You'd need clone(), and then in the original namespace
> mount --bind /proc/CHILDPID/root /var/namespace/$NSNAME
> and then child process can safely exit.

Or pass the file descriptor over a unix domain socket, so that it
doesn't need /proc.

-- Jamie
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