mirror of https://github.com/k3s-io/k3s
60 lines
2.3 KiB
Go
60 lines
2.3 KiB
Go
/*
|
|
Copyright 2016 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 user
|
|
|
|
import (
|
|
policy "k8s.io/api/policy/v1beta1"
|
|
"k8s.io/apimachinery/pkg/util/validation/field"
|
|
api "k8s.io/kubernetes/pkg/apis/core"
|
|
)
|
|
|
|
type nonRoot struct{}
|
|
|
|
var _ RunAsUserStrategy = &nonRoot{}
|
|
|
|
func NewRunAsNonRoot(options *policy.RunAsUserStrategyOptions) (RunAsUserStrategy, error) {
|
|
return &nonRoot{}, nil
|
|
}
|
|
|
|
// Generate creates the uid based on policy rules. This strategy does return a UID. It assumes
|
|
// that the user will specify a UID or the container image specifies a UID.
|
|
func (s *nonRoot) Generate(pod *api.Pod, container *api.Container) (*int64, error) {
|
|
return nil, nil
|
|
}
|
|
|
|
// Validate ensures that the specified values fall within the range of the strategy. Validation
|
|
// of this will pass if either the UID is not set, assuming that the image will provided the UID
|
|
// or if the UID is set it is not root. Validation will fail if RunAsNonRoot is set to false.
|
|
// In order to work properly this assumes that the kubelet performs a final check on runAsUser
|
|
// or the image UID when runAsUser is nil.
|
|
func (s *nonRoot) Validate(scPath *field.Path, _ *api.Pod, _ *api.Container, runAsNonRoot *bool, runAsUser *int64) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
if runAsNonRoot == nil && runAsUser == nil {
|
|
allErrs = append(allErrs, field.Required(scPath.Child("runAsNonRoot"), "must be true"))
|
|
return allErrs
|
|
}
|
|
if runAsNonRoot != nil && *runAsNonRoot == false {
|
|
allErrs = append(allErrs, field.Invalid(scPath.Child("runAsNonRoot"), *runAsNonRoot, "must be true"))
|
|
return allErrs
|
|
}
|
|
if runAsUser != nil && *runAsUser == 0 {
|
|
allErrs = append(allErrs, field.Invalid(scPath.Child("runAsUser"), *runAsUser, "running with the root UID is forbidden"))
|
|
return allErrs
|
|
}
|
|
return allErrs
|
|
}
|