Podman pod create --share-parent vs --share=cgroup

separated cgroupNS sharing from setting the pod as the cgroup parent,
made a new flag --share-parent which sets the pod as the cgroup parent for all
containers entering the pod

remove cgroup from the default kernel namespaces since we want the same default behavior as before which is just the cgroup parent.

resolves #12765

Signed-off-by: cdoern <cdoern@redhat.com>
Signed-off-by: cdoern <cbdoer23@g.holycross.edu>
Signed-off-by: cdoern <cdoern@redhat.com>

2 files changed, 44 insertions, 1 deletions

diff --git a/test/e2e/pod_create_test.go b/test/e2e/pod_create_test.go
index f0abfd80c..cd7f72ac0 100644
--- a/test/e2e/pod_create_test.go
+++ b/test/e2e/pod_create_test.go
@@ -1068,4 +1068,47 @@ ENTRYPOINT ["sleep","99999"]
 
 	})
 
+	It("podman pod create --share-parent test", func() {
+		SkipIfRootlessCgroupsV1("rootless cannot use cgroups with cgroupsv1")
+		podCreate := podmanTest.Podman([]string{"pod", "create", "--share-parent=false"})
+		podCreate.WaitWithDefaultTimeout()
+		Expect(podCreate).Should(Exit(0))
+
+		ctrCreate := podmanTest.Podman([]string{"run", "-dt", "--pod", podCreate.OutputToString(), ALPINE})
+		ctrCreate.WaitWithDefaultTimeout()
+		Expect(ctrCreate).Should(Exit(0))
+
+		inspectPod := podmanTest.Podman([]string{"pod", "inspect", podCreate.OutputToString()})
+		inspectPod.WaitWithDefaultTimeout()
+		Expect(inspectPod).Should(Exit(0))
+		data := inspectPod.InspectPodToJSON()
+
+		inspect := podmanTest.InspectContainer(ctrCreate.OutputToString())
+		Expect(data.CgroupPath).To(HaveLen(0))
+		if podmanTest.CgroupManager == "cgroupfs" || !rootless.IsRootless() {
+			Expect(inspect[0].HostConfig.CgroupParent).To(HaveLen(0))
+		} else if podmanTest.CgroupManager == "systemd" {
+			Expect(inspect[0].HostConfig.CgroupParent).To(Equal("user.slice"))
+		}
+
+		podCreate2 := podmanTest.Podman([]string{"pod", "create", "--share", "cgroup,ipc,net,uts", "--share-parent=false", "--infra-name", "cgroupCtr"})
+		podCreate2.WaitWithDefaultTimeout()
+		Expect(podCreate2).Should(Exit(0))
+
+		ctrCreate2 := podmanTest.Podman([]string{"run", "-dt", "--pod", podCreate2.OutputToString(), ALPINE})
+		ctrCreate2.WaitWithDefaultTimeout()
+		Expect(ctrCreate2).Should(Exit(0))
+
+		inspectInfra := podmanTest.InspectContainer("cgroupCtr")
+
+		inspect2 := podmanTest.InspectContainer(ctrCreate2.OutputToString())
+
+		Expect(inspect2[0].HostConfig.CgroupMode).To(ContainSubstring(inspectInfra[0].ID))
+
+		podCreate3 := podmanTest.Podman([]string{"pod", "create", "--share", "cgroup"})
+		podCreate3.WaitWithDefaultTimeout()
+		Expect(podCreate3).ShouldNot(Exit(0))
+
+	})
+
 })
diff --git a/test/system/200-pod.bats b/test/system/200-pod.bats
index bccd04e8d..34dfaa8f6 100644
--- a/test/system/200-pod.bats
+++ b/test/system/200-pod.bats
@@ -340,7 +340,7 @@ EOF
     run_podman 125 pod create --share bogus --name $pod_name
     is "$output" ".*Invalid kernel namespace to share: bogus. Options are: cgroup, ipc, net, pid, uts or none" \
        "pod test for bogus --share option"
-    run_podman pod create --share cgroup,ipc --name $pod_name
+    run_podman pod create --share ipc --name $pod_name
     run_podman run --rm --pod $pod_name --hostname foobar $IMAGE hostname
     is "$output" "foobar" "--hostname should work with non share UTS namespace"
 }