Delete PSP API types and generated clients

Signed-off-by: Monis Khan <mok@microsoft.com>
This commit is contained in:
Monis Khan
2023-08-07 16:15:13 -04:00
parent 1620473a9a
commit 10fe3da87d
50 changed files with 63 additions and 10686 deletions

View File

@@ -17,33 +17,18 @@ limitations under the License.
package validation
import (
"fmt"
"path/filepath"
"regexp"
"strings"
v1 "k8s.io/api/core/v1"
policyapiv1beta1 "k8s.io/api/policy/v1beta1"
apimachineryvalidation "k8s.io/apimachinery/pkg/api/validation"
unversionedvalidation "k8s.io/apimachinery/pkg/apis/meta/v1/validation"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/apimachinery/pkg/util/validation/field"
appsvalidation "k8s.io/kubernetes/pkg/apis/apps/validation"
"k8s.io/kubernetes/pkg/apis/core"
apivalidation "k8s.io/kubernetes/pkg/apis/core/validation"
"k8s.io/kubernetes/pkg/apis/policy"
)
const (
// AllowAny is the wildcard used to allow any profile.
seccompAllowAny = "*"
// DefaultProfileAnnotationKey specifies the default seccomp profile.
seccompDefaultProfileAnnotationKey = "seccomp.security.alpha.kubernetes.io/defaultProfileName"
// AllowedProfilesAnnotationKey specifies the allowed seccomp profiles.
seccompAllowedProfilesAnnotationKey = "seccomp.security.alpha.kubernetes.io/allowedProfileNames"
)
var supportedUnhealthyPodEvictionPolicies = sets.NewString(
string(policy.IfHealthyBudget),
string(policy.AlwaysAllow),
@@ -107,312 +92,6 @@ func ValidatePodDisruptionBudgetStatusUpdate(status, oldStatus policy.PodDisrupt
return allErrs
}
// ValidatePodSecurityPolicyName can be used to check whether the given
// pod security policy name is valid.
// Prefix indicates this name will be used as part of generation, in which case
// trailing dashes are allowed.
var ValidatePodSecurityPolicyName = apimachineryvalidation.NameIsDNSSubdomain
// ValidatePodSecurityPolicy validates a PodSecurityPolicy and returns an ErrorList
// with any errors.
func ValidatePodSecurityPolicy(psp *policy.PodSecurityPolicy) field.ErrorList {
allErrs := field.ErrorList{}
allErrs = append(allErrs, apivalidation.ValidateObjectMeta(&psp.ObjectMeta, false, ValidatePodSecurityPolicyName, field.NewPath("metadata"))...)
allErrs = append(allErrs, ValidatePodSecurityPolicySpecificAnnotations(psp.Annotations, field.NewPath("metadata").Child("annotations"))...)
allErrs = append(allErrs, ValidatePodSecurityPolicySpec(&psp.Spec, field.NewPath("spec"))...)
return allErrs
}
// ValidatePodSecurityPolicySpec validates a PodSecurityPolicySpec and returns an ErrorList
// with any errors.
func ValidatePodSecurityPolicySpec(spec *policy.PodSecurityPolicySpec, fldPath *field.Path) field.ErrorList {
allErrs := field.ErrorList{}
allErrs = append(allErrs, validatePSPRunAsUser(fldPath.Child("runAsUser"), &spec.RunAsUser)...)
allErrs = append(allErrs, validatePSPRunAsGroup(fldPath.Child("runAsGroup"), spec.RunAsGroup)...)
allErrs = append(allErrs, validatePSPSELinux(fldPath.Child("seLinux"), &spec.SELinux)...)
allErrs = append(allErrs, validatePSPSupplementalGroup(fldPath.Child("supplementalGroups"), &spec.SupplementalGroups)...)
allErrs = append(allErrs, validatePSPFSGroup(fldPath.Child("fsGroup"), &spec.FSGroup)...)
allErrs = append(allErrs, validatePodSecurityPolicyVolumes(fldPath, spec.Volumes)...)
if len(spec.RequiredDropCapabilities) > 0 && hasCap(policy.AllowAllCapabilities, spec.AllowedCapabilities) {
allErrs = append(allErrs, field.Invalid(field.NewPath("requiredDropCapabilities"), spec.RequiredDropCapabilities,
"must be empty when all capabilities are allowed by a wildcard"))
}
allErrs = append(allErrs, validatePSPCapsAgainstDrops(spec.RequiredDropCapabilities, spec.DefaultAddCapabilities, field.NewPath("defaultAddCapabilities"))...)
allErrs = append(allErrs, validatePSPCapsAgainstDrops(spec.RequiredDropCapabilities, spec.AllowedCapabilities, field.NewPath("allowedCapabilities"))...)
allErrs = append(allErrs, validatePSPDefaultAllowPrivilegeEscalation(fldPath.Child("defaultAllowPrivilegeEscalation"), spec.DefaultAllowPrivilegeEscalation, spec.AllowPrivilegeEscalation)...)
allErrs = append(allErrs, validatePSPAllowedProcMountTypes(fldPath.Child("allowedProcMountTypes"), spec.AllowedProcMountTypes)...)
allErrs = append(allErrs, validatePSPAllowedHostPaths(fldPath.Child("allowedHostPaths"), spec.AllowedHostPaths)...)
allErrs = append(allErrs, validatePSPAllowedFlexVolumes(fldPath.Child("allowedFlexVolumes"), spec.AllowedFlexVolumes)...)
allErrs = append(allErrs, validatePSPAllowedCSIDrivers(fldPath.Child("allowedCSIDrivers"), spec.AllowedCSIDrivers)...)
allErrs = append(allErrs, validatePodSecurityPolicySysctls(fldPath.Child("allowedUnsafeSysctls"), spec.AllowedUnsafeSysctls)...)
allErrs = append(allErrs, validatePodSecurityPolicySysctls(fldPath.Child("forbiddenSysctls"), spec.ForbiddenSysctls)...)
allErrs = append(allErrs, validatePodSecurityPolicySysctlListsDoNotOverlap(fldPath.Child("allowedUnsafeSysctls"), fldPath.Child("forbiddenSysctls"), spec.AllowedUnsafeSysctls, spec.ForbiddenSysctls)...)
allErrs = append(allErrs, validateRuntimeClassStrategy(fldPath.Child("runtimeClass"), spec.RuntimeClass)...)
return allErrs
}
// ValidatePodSecurityPolicySpecificAnnotations validates annotations and returns an ErrorList
// with any errors.
func ValidatePodSecurityPolicySpecificAnnotations(annotations map[string]string, fldPath *field.Path) field.ErrorList {
allErrs := field.ErrorList{}
if p := annotations[v1.AppArmorBetaDefaultProfileAnnotationKey]; p != "" {
if err := apivalidation.ValidateAppArmorProfileFormat(p); err != nil {
allErrs = append(allErrs, field.Invalid(fldPath.Key(v1.AppArmorBetaDefaultProfileAnnotationKey), p, err.Error()))
}
}
if allowed := annotations[v1.AppArmorBetaAllowedProfilesAnnotationKey]; allowed != "" {
for _, p := range strings.Split(allowed, ",") {
if err := apivalidation.ValidateAppArmorProfileFormat(p); err != nil {
allErrs = append(allErrs, field.Invalid(fldPath.Key(v1.AppArmorBetaAllowedProfilesAnnotationKey), allowed, err.Error()))
}
}
}
if p := annotations[seccompDefaultProfileAnnotationKey]; p != "" {
allErrs = append(allErrs, apivalidation.ValidateSeccompProfile(p, fldPath.Key(seccompDefaultProfileAnnotationKey))...)
}
if allowed := annotations[seccompAllowedProfilesAnnotationKey]; allowed != "" {
for _, p := range strings.Split(allowed, ",") {
if p == seccompAllowAny {
continue
}
allErrs = append(allErrs, apivalidation.ValidateSeccompProfile(p, fldPath.Key(seccompAllowedProfilesAnnotationKey))...)
}
}
return allErrs
}
// validatePSPAllowedHostPaths makes sure all allowed host paths follow:
// 1. path prefix is required
// 2. path prefix does not have any element which is ".."
func validatePSPAllowedHostPaths(fldPath *field.Path, allowedHostPaths []policy.AllowedHostPath) field.ErrorList {
allErrs := field.ErrorList{}
for i, target := range allowedHostPaths {
if target.PathPrefix == "" {
allErrs = append(allErrs, field.Required(fldPath.Index(i), "is required"))
break
}
parts := strings.Split(filepath.ToSlash(target.PathPrefix), "/")
for _, item := range parts {
if item == ".." {
allErrs = append(allErrs, field.Invalid(fldPath.Index(i), target.PathPrefix, "must not contain '..'"))
break // even for `../../..`, one error is sufficient to make the point
}
}
}
return allErrs
}
func validatePSPAllowedFlexVolumes(fldPath *field.Path, flexVolumes []policy.AllowedFlexVolume) field.ErrorList {
allErrs := field.ErrorList{}
if len(flexVolumes) > 0 {
for idx, fv := range flexVolumes {
if len(fv.Driver) == 0 {
allErrs = append(allErrs, field.Required(fldPath.Child("allowedFlexVolumes").Index(idx).Child("driver"),
"must specify a driver"))
}
}
}
return allErrs
}
func validatePSPAllowedCSIDrivers(fldPath *field.Path, csiDrivers []policy.AllowedCSIDriver) field.ErrorList {
allErrs := field.ErrorList{}
if len(csiDrivers) > 0 {
for idx, csiDriver := range csiDrivers {
fieldPath := fldPath.Child("allowedCSIDriver").Index(idx).Child("name")
allErrs = append(allErrs, apivalidation.ValidateCSIDriverName(csiDriver.Name, fieldPath)...)
}
}
return allErrs
}
// validatePSPSELinux validates the SELinux fields of PodSecurityPolicy.
func validatePSPSELinux(fldPath *field.Path, seLinux *policy.SELinuxStrategyOptions) field.ErrorList {
allErrs := field.ErrorList{}
// ensure the selinux strategy has a valid rule
supportedSELinuxRules := sets.NewString(
string(policy.SELinuxStrategyMustRunAs),
string(policy.SELinuxStrategyRunAsAny),
)
if !supportedSELinuxRules.Has(string(seLinux.Rule)) {
allErrs = append(allErrs, field.NotSupported(fldPath.Child("rule"), seLinux.Rule, supportedSELinuxRules.List()))
}
return allErrs
}
// validatePSPRunAsUser validates the RunAsUser fields of PodSecurityPolicy.
func validatePSPRunAsUser(fldPath *field.Path, runAsUser *policy.RunAsUserStrategyOptions) field.ErrorList {
allErrs := field.ErrorList{}
// ensure the user strategy has a valid rule
supportedRunAsUserRules := sets.NewString(
string(policy.RunAsUserStrategyMustRunAs),
string(policy.RunAsUserStrategyMustRunAsNonRoot),
string(policy.RunAsUserStrategyRunAsAny),
)
if !supportedRunAsUserRules.Has(string(runAsUser.Rule)) {
allErrs = append(allErrs, field.NotSupported(fldPath.Child("rule"), runAsUser.Rule, supportedRunAsUserRules.List()))
}
// validate range settings
for idx, rng := range runAsUser.Ranges {
allErrs = append(allErrs, validateUserIDRange(fldPath.Child("ranges").Index(idx), rng)...)
}
return allErrs
}
// validatePSPRunAsGroup validates the RunAsGroup fields of PodSecurityPolicy.
func validatePSPRunAsGroup(fldPath *field.Path, runAsGroup *policy.RunAsGroupStrategyOptions) field.ErrorList {
var allErrs field.ErrorList
if runAsGroup == nil {
return allErrs
}
switch runAsGroup.Rule {
case policy.RunAsGroupStrategyRunAsAny:
if len(runAsGroup.Ranges) != 0 {
allErrs = append(allErrs, field.Invalid(fldPath.Child("ranges"), runAsGroup.Ranges, "Ranges must be empty"))
}
case policy.RunAsGroupStrategyMustRunAs, policy.RunAsGroupStrategyMayRunAs:
if len(runAsGroup.Ranges) == 0 {
allErrs = append(allErrs, field.Invalid(fldPath.Child("ranges"), runAsGroup.Ranges, "must provide at least one range"))
}
// validate range settings
for idx, rng := range runAsGroup.Ranges {
allErrs = append(allErrs, validateGroupIDRange(fldPath.Child("ranges").Index(idx), rng)...)
}
default:
supportedRunAsGroupRules := []string{
string(policy.RunAsGroupStrategyMustRunAs),
string(policy.RunAsGroupStrategyRunAsAny),
string(policy.RunAsGroupStrategyMayRunAs),
}
allErrs = append(allErrs, field.NotSupported(fldPath.Child("rule"), runAsGroup.Rule, supportedRunAsGroupRules))
}
return allErrs
}
// validatePSPFSGroup validates the FSGroupStrategyOptions fields of the PodSecurityPolicy.
func validatePSPFSGroup(fldPath *field.Path, groupOptions *policy.FSGroupStrategyOptions) field.ErrorList {
allErrs := field.ErrorList{}
supportedRules := sets.NewString(
string(policy.FSGroupStrategyMustRunAs),
string(policy.FSGroupStrategyMayRunAs),
string(policy.FSGroupStrategyRunAsAny),
)
if !supportedRules.Has(string(groupOptions.Rule)) {
allErrs = append(allErrs, field.NotSupported(fldPath.Child("rule"), groupOptions.Rule, supportedRules.List()))
}
for idx, rng := range groupOptions.Ranges {
allErrs = append(allErrs, validateGroupIDRange(fldPath.Child("ranges").Index(idx), rng)...)
}
return allErrs
}
// validatePSPSupplementalGroup validates the SupplementalGroupsStrategyOptions fields of the PodSecurityPolicy.
func validatePSPSupplementalGroup(fldPath *field.Path, groupOptions *policy.SupplementalGroupsStrategyOptions) field.ErrorList {
allErrs := field.ErrorList{}
supportedRules := sets.NewString(
string(policy.SupplementalGroupsStrategyRunAsAny),
string(policy.SupplementalGroupsStrategyMayRunAs),
string(policy.SupplementalGroupsStrategyMustRunAs),
)
if !supportedRules.Has(string(groupOptions.Rule)) {
allErrs = append(allErrs, field.NotSupported(fldPath.Child("rule"), groupOptions.Rule, supportedRules.List()))
}
for idx, rng := range groupOptions.Ranges {
allErrs = append(allErrs, validateGroupIDRange(fldPath.Child("ranges").Index(idx), rng)...)
}
return allErrs
}
// validatePodSecurityPolicyVolumes validates the volume fields of PodSecurityPolicy.
func validatePodSecurityPolicyVolumes(fldPath *field.Path, volumes []policy.FSType) field.ErrorList {
allErrs := field.ErrorList{}
allowed := getAllFSTypesAsSet()
// add in the * value since that is a pseudo type that is not included by default
allowed.Insert(string(policy.All))
for _, v := range volumes {
if !allowed.Has(string(v)) {
allErrs = append(allErrs, field.NotSupported(fldPath.Child("volumes"), v, allowed.List()))
}
}
return allErrs
}
// getAllFSTypesAsSet returns all actual volume types, regardless
// of feature gates. The special policy.All pseudo type is not included.
func getAllFSTypesAsSet() sets.String {
fstypes := sets.NewString()
fstypes.Insert(
string(policy.HostPath),
string(policy.AzureFile),
string(policy.Flocker),
string(policy.FlexVolume),
string(policy.EmptyDir),
string(policy.GCEPersistentDisk),
string(policy.AWSElasticBlockStore),
string(policy.GitRepo),
string(policy.Secret),
string(policy.NFS),
string(policy.ISCSI),
string(policy.Glusterfs),
string(policy.PersistentVolumeClaim),
string(policy.RBD),
string(policy.Cinder),
string(policy.CephFS),
string(policy.DownwardAPI),
string(policy.FC),
string(policy.ConfigMap),
string(policy.VsphereVolume),
string(policy.Quobyte),
string(policy.AzureDisk),
string(policy.PhotonPersistentDisk),
string(policy.StorageOS),
string(policy.Projected),
string(policy.PortworxVolume),
string(policy.ScaleIO),
string(policy.CSI),
string(policy.Ephemeral),
)
return fstypes
}
// validatePSPDefaultAllowPrivilegeEscalation validates the DefaultAllowPrivilegeEscalation field against the AllowPrivilegeEscalation field of a PodSecurityPolicy.
func validatePSPDefaultAllowPrivilegeEscalation(fldPath *field.Path, defaultAllowPrivilegeEscalation *bool, allowPrivilegeEscalation bool) field.ErrorList {
allErrs := field.ErrorList{}
if defaultAllowPrivilegeEscalation != nil && *defaultAllowPrivilegeEscalation && !allowPrivilegeEscalation {
allErrs = append(allErrs, field.Invalid(fldPath, defaultAllowPrivilegeEscalation, "Cannot set DefaultAllowPrivilegeEscalation to true without also setting AllowPrivilegeEscalation to true"))
}
return allErrs
}
// validatePSPAllowedProcMountTypes validates the DefaultAllowPrivilegeEscalation field against the AllowPrivilegeEscalation field of a PodSecurityPolicy.
func validatePSPAllowedProcMountTypes(fldPath *field.Path, allowedProcMountTypes []core.ProcMountType) field.ErrorList {
allErrs := field.ErrorList{}
for i, procMountType := range allowedProcMountTypes {
if err := apivalidation.ValidateProcMountType(fldPath.Index(i), procMountType); err != nil {
allErrs = append(allErrs, err)
}
}
return allErrs
}
const sysctlPatternSegmentFmt string = "([a-z0-9][-_a-z0-9]*)?[a-z0-9*]"
// SysctlContainSlashPatternFmt is a regex that contains a slash used for matching valid sysctl patterns.
@@ -432,171 +111,3 @@ func IsValidSysctlPattern(name string) bool {
}
return sysctlContainSlashPatternRegexp.MatchString(name)
}
func validatePodSecurityPolicySysctlListsDoNotOverlap(allowedSysctlsFldPath, forbiddenSysctlsFldPath *field.Path, allowedUnsafeSysctls, forbiddenSysctls []string) field.ErrorList {
allErrs := field.ErrorList{}
for i, allowedSysctl := range allowedUnsafeSysctls {
isAllowedSysctlPattern := false
allowedSysctlPrefix := ""
if strings.HasSuffix(allowedSysctl, "*") {
isAllowedSysctlPattern = true
allowedSysctlPrefix = strings.TrimSuffix(allowedSysctl, "*")
}
for j, forbiddenSysctl := range forbiddenSysctls {
isForbiddenSysctlPattern := false
forbiddenSysctlPrefix := ""
if strings.HasSuffix(forbiddenSysctl, "*") {
isForbiddenSysctlPattern = true
forbiddenSysctlPrefix = strings.TrimSuffix(forbiddenSysctl, "*")
}
switch {
case isAllowedSysctlPattern && isForbiddenSysctlPattern:
if strings.HasPrefix(allowedSysctlPrefix, forbiddenSysctlPrefix) {
allErrs = append(allErrs, field.Invalid(allowedSysctlsFldPath.Index(i), allowedUnsafeSysctls[i], fmt.Sprintf("sysctl overlaps with %v", forbiddenSysctl)))
} else if strings.HasPrefix(forbiddenSysctlPrefix, allowedSysctlPrefix) {
allErrs = append(allErrs, field.Invalid(forbiddenSysctlsFldPath.Index(j), forbiddenSysctls[j], fmt.Sprintf("sysctl overlaps with %v", allowedSysctl)))
}
case isAllowedSysctlPattern:
if strings.HasPrefix(forbiddenSysctl, allowedSysctlPrefix) {
allErrs = append(allErrs, field.Invalid(forbiddenSysctlsFldPath.Index(j), forbiddenSysctls[j], fmt.Sprintf("sysctl overlaps with %v", allowedSysctl)))
}
case isForbiddenSysctlPattern:
if strings.HasPrefix(allowedSysctl, forbiddenSysctlPrefix) {
allErrs = append(allErrs, field.Invalid(allowedSysctlsFldPath.Index(i), allowedUnsafeSysctls[i], fmt.Sprintf("sysctl overlaps with %v", forbiddenSysctl)))
}
default:
if allowedSysctl == forbiddenSysctl {
allErrs = append(allErrs, field.Invalid(allowedSysctlsFldPath.Index(i), allowedUnsafeSysctls[i], fmt.Sprintf("sysctl overlaps with %v", forbiddenSysctl)))
}
}
}
}
return allErrs
}
// validatePodSecurityPolicySysctls validates the sysctls fields of PodSecurityPolicy.
func validatePodSecurityPolicySysctls(fldPath *field.Path, sysctls []string) field.ErrorList {
allErrs := field.ErrorList{}
if len(sysctls) == 0 {
return allErrs
}
coversAll := false
for i, s := range sysctls {
if len(s) == 0 {
allErrs = append(allErrs, field.Invalid(fldPath.Index(i), sysctls[i], "empty sysctl not allowed"))
} else if !IsValidSysctlPattern(string(s)) {
allErrs = append(
allErrs,
field.Invalid(fldPath.Index(i), sysctls[i], fmt.Sprintf("must have at most %d characters and match regex %s",
apivalidation.SysctlMaxLength,
SysctlContainSlashPatternFmt,
)),
)
} else if s[0] == '*' {
coversAll = true
}
}
if coversAll && len(sysctls) > 1 {
allErrs = append(allErrs, field.Forbidden(fldPath.Child("items"), "if '*' is present, must not specify other sysctls"))
}
return allErrs
}
func validateUserIDRange(fldPath *field.Path, rng policy.IDRange) field.ErrorList {
return validateIDRanges(fldPath, rng.Min, rng.Max)
}
func validateGroupIDRange(fldPath *field.Path, rng policy.IDRange) field.ErrorList {
return validateIDRanges(fldPath, rng.Min, rng.Max)
}
// validateIDRanges ensures the range is valid.
func validateIDRanges(fldPath *field.Path, min, max int64) field.ErrorList {
allErrs := field.ErrorList{}
// if 0 <= Min <= Max then we do not need to validate max. It is always greater than or
// equal to 0 and Min.
if min < 0 {
allErrs = append(allErrs, field.Invalid(fldPath.Child("min"), min, "min cannot be negative"))
}
if max < 0 {
allErrs = append(allErrs, field.Invalid(fldPath.Child("max"), max, "max cannot be negative"))
}
if min > max {
allErrs = append(allErrs, field.Invalid(fldPath.Child("min"), min, "min cannot be greater than max"))
}
return allErrs
}
// validatePSPCapsAgainstDrops ensures an allowed cap is not listed in the required drops.
func validatePSPCapsAgainstDrops(requiredDrops []core.Capability, capsToCheck []core.Capability, fldPath *field.Path) field.ErrorList {
allErrs := field.ErrorList{}
if requiredDrops == nil {
return allErrs
}
for _, cap := range capsToCheck {
if hasCap(cap, requiredDrops) {
allErrs = append(allErrs, field.Invalid(fldPath, cap,
fmt.Sprintf("capability is listed in %s and requiredDropCapabilities", fldPath.String())))
}
}
return allErrs
}
// validateRuntimeClassStrategy ensures all the RuntimeClass restrictions are valid.
func validateRuntimeClassStrategy(fldPath *field.Path, rc *policy.RuntimeClassStrategyOptions) field.ErrorList {
if rc == nil {
return nil
}
var allErrs field.ErrorList
allowed := map[string]bool{}
for i, name := range rc.AllowedRuntimeClassNames {
if name != policy.AllowAllRuntimeClassNames {
allErrs = append(allErrs, apivalidation.ValidateRuntimeClassName(name, fldPath.Child("allowedRuntimeClassNames").Index(i))...)
}
if allowed[name] {
allErrs = append(allErrs, field.Duplicate(fldPath.Child("allowedRuntimeClassNames").Index(i), name))
}
allowed[name] = true
}
if rc.DefaultRuntimeClassName != nil {
allErrs = append(allErrs, apivalidation.ValidateRuntimeClassName(*rc.DefaultRuntimeClassName, fldPath.Child("defaultRuntimeClassName"))...)
if !allowed[*rc.DefaultRuntimeClassName] && !allowed[policy.AllowAllRuntimeClassNames] {
allErrs = append(allErrs, field.Required(fldPath.Child("allowedRuntimeClassNames"),
fmt.Sprintf("default %q must be allowed", *rc.DefaultRuntimeClassName)))
}
}
if allowed[policy.AllowAllRuntimeClassNames] && len(rc.AllowedRuntimeClassNames) > 1 {
allErrs = append(allErrs, field.Invalid(fldPath.Child("allowedRuntimeClassNames"), rc.AllowedRuntimeClassNames, "if '*' is present, must not specify other RuntimeClass names"))
}
return allErrs
}
// ValidatePodSecurityPolicyUpdate validates a PSP for updates.
func ValidatePodSecurityPolicyUpdate(old *policy.PodSecurityPolicy, new *policy.PodSecurityPolicy) field.ErrorList {
allErrs := field.ErrorList{}
allErrs = append(allErrs, apivalidation.ValidateObjectMetaUpdate(&new.ObjectMeta, &old.ObjectMeta, field.NewPath("metadata"))...)
allErrs = append(allErrs, ValidatePodSecurityPolicySpecificAnnotations(new.Annotations, field.NewPath("metadata").Child("annotations"))...)
allErrs = append(allErrs, ValidatePodSecurityPolicySpec(&new.Spec, field.NewPath("spec"))...)
return allErrs
}
// hasCap checks for needle in haystack.
func hasCap(needle core.Capability, haystack []core.Capability) bool {
for _, c := range haystack {
if needle == c {
return true
}
}
return false
}