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update crio regex for intra-pod workload attestation #4946

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5 changes: 3 additions & 2 deletions pkg/agent/plugin/workloadattestor/k8s/k8s_posix.go
Original file line number Diff line number Diff line change
Expand Up @@ -128,14 +128,15 @@ var cgroupREs = []*regexp.Regexp{

// This regex applies for container runtimes, that won't put the PodUID into
// the cgroup name.
// Currently only cri-o in combination with kubeedge is known for this abnormally.
// cri-o in combination with kubeedge or processes in the same pod as
// spire will cause this.
regexp.MustCompile(`` +
// intentionally empty poduid group
`(?P<poduid>)` +
// mustnotmatch group: cgroup path must not include a poduid
`(?P<mustnotmatch>pod[[:xdigit:]]{8}[[:punct:]]?[[:xdigit:]]{4}[[:punct:]]?[[:xdigit:]]{4}[[:punct:]]?[[:xdigit:]]{4}[[:punct:]]?[[:xdigit:]]{12}[[:punct:]])?` +
// /crio-
`(?:[[:^punct:]]*/*)*crio[[:punct:]]` +
`(?:[[:^punct:]]*/*)*cri(o)*(-containerd)*[[:punct:]]` +
// non-punctuation end of string, i.e., the container ID
`(?P<containerid>[[:xdigit:]]{64})$`),
}
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