seccomp: send caller pidfd along with proxied requests
seccomp: send caller pidfd along with proxied requests

On the one hand this should close the race between the
process exiting until the proxy reads the request.
On the other hand it'll help the proxy quickly access info
from /proc (such as ./cwd, ./ns/mnt, ...)

Signed-off-by: Wolfgang Bumiller <bac7898f539fd233d9ce33be7a9eda13ee647930@proxmox.com>

hallyn/lxc,hallyn/lxc,hallyn/lxc