1
0
mirror of https://github.com/ceph/ceph-csi.git synced 2024-12-30 08:50:20 +00:00
ceph-csi/vendor/k8s.io/pod-security-admission/policy/check_hostNamespaces.go
Madhu Rajanna e3bf375035 rebase: update kubernetes to v1.25.0
update kubernetes to latest v1.25.0
release.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2022-08-25 16:36:35 +00:00

83 lines
1.9 KiB
Go

/*
Copyright 2021 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package policy
import (
"strings"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/pod-security-admission/api"
)
/*
Sharing the host network, PID, and IPC namespaces must be disallowed.
**Restricted Fields:**
spec.hostNetwork
spec.hostPID
spec.hostIPC
**Allowed Values:** undefined, false
*/
func init() {
addCheck(CheckHostNamespaces)
}
// CheckHostNamespaces returns a baseline level check
// that prohibits host namespaces in 1.0+
func CheckHostNamespaces() Check {
return Check{
ID: "hostNamespaces",
Level: api.LevelBaseline,
Versions: []VersionedCheck{
{
MinimumVersion: api.MajorMinorVersion(1, 0),
CheckPod: hostNamespaces_1_0,
},
},
}
}
func hostNamespaces_1_0(podMetadata *metav1.ObjectMeta, podSpec *corev1.PodSpec) CheckResult {
var hostNamespaces []string
if podSpec.HostNetwork {
hostNamespaces = append(hostNamespaces, "hostNetwork=true")
}
if podSpec.HostPID {
hostNamespaces = append(hostNamespaces, "hostPID=true")
}
if podSpec.HostIPC {
hostNamespaces = append(hostNamespaces, "hostIPC=true")
}
if len(hostNamespaces) > 0 {
return CheckResult{
Allowed: false,
ForbiddenReason: "host namespaces",
ForbiddenDetail: strings.Join(hostNamespaces, ", "),
}
}
return CheckResult{Allowed: true}
}