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mustrunas.go
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mustrunas.go
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package user
import (
"fmt"
"k8s.io/apimachinery/pkg/util/validation/field"
api "k8s.io/kubernetes/pkg/apis/core"
securityapi "github.com/openshift/origin/pkg/security/apis/security"
)
// mustRunAs implements the RunAsUserSecurityContextConstraintsStrategy interface
type mustRunAs struct {
opts *securityapi.RunAsUserStrategyOptions
}
var _ RunAsUserSecurityContextConstraintsStrategy = &mustRunAs{}
// NewMustRunAs provides a strategy that requires the container to run as a specific UID.
func NewMustRunAs(options *securityapi.RunAsUserStrategyOptions) (RunAsUserSecurityContextConstraintsStrategy, error) {
if options == nil {
return nil, fmt.Errorf("MustRunAs requires run as user options")
}
if options.UID == nil {
return nil, fmt.Errorf("MustRunAs requires a UID")
}
return &mustRunAs{
opts: options,
}, nil
}
// Generate creates the uid based on policy rules. MustRunAs returns the UID it is initialized with.
func (s *mustRunAs) Generate(pod *api.Pod, container *api.Container) (*int64, error) {
return s.opts.UID, nil
}
// Validate ensures that the specified values fall within the range of the strategy.
func (s *mustRunAs) Validate(fldPath *field.Path, _ *api.Pod, _ *api.Container, runAsNonRoot *bool, runAsUser *int64) field.ErrorList {
allErrs := field.ErrorList{}
if runAsUser == nil {
allErrs = append(allErrs, field.Required(fldPath.Child("runAsUser"), ""))
return allErrs
}
if *s.opts.UID != *runAsUser {
detail := fmt.Sprintf("must be: %v", *s.opts.UID)
allErrs = append(allErrs, field.Invalid(fldPath.Child("runAsUser"), *runAsUser, detail))
return allErrs
}
return allErrs
}