PodSecurityPolicy: limit validation to provided groups

pkg/security/podsecuritypolicy/group/mustrunas.go

@@ -46,13 +46,13 @@ func NewMustRunAs(ranges []extensions.GroupIDRange, field string) (GroupStrategy
 
 // Generate creates the group based on policy rules.  By default this returns the first group of the
 // first range (min val).
-func (s *mustRunAs) Generate(pod *api.Pod) ([]int64, error) {
+func (s *mustRunAs) Generate(_ *api.Pod) ([]int64, error) {
 	return []int64{s.ranges[0].Min}, nil
 }
 
 // Generate a single value to be applied.  This is used for FSGroup.  This strategy will return
 // the first group of the first range (min val).
-func (s *mustRunAs) GenerateSingle(pod *api.Pod) (*int64, error) {
+func (s *mustRunAs) GenerateSingle(_ *api.Pod) (*int64, error) {
 	single := new(int64)
 	*single = s.ranges[0].Min
 	return single, nil
@@ -61,14 +61,9 @@ func (s *mustRunAs) GenerateSingle(pod *api.Pod) (*int64, error) {
 // Validate ensures that the specified values fall within the range of the strategy.
 // Groups are passed in here to allow this strategy to support multiple group fields (fsgroup and
 // supplemental groups).
-func (s *mustRunAs) Validate(pod *api.Pod, groups []int64) field.ErrorList {
+func (s *mustRunAs) Validate(_ *api.Pod, groups []int64) field.ErrorList {
 	allErrs := field.ErrorList{}
 
-	if pod.Spec.SecurityContext == nil {
-		allErrs = append(allErrs, field.Invalid(field.NewPath("securityContext"), pod.Spec.SecurityContext, "unable to validate nil security context"))
-		return allErrs
-	}
-
 	if len(groups) == 0 && len(s.ranges) > 0 {
 		allErrs = append(allErrs, field.Invalid(field.NewPath(s.field), groups, "unable to validate empty groups against required ranges"))
 	}

pkg/security/podsecuritypolicy/group/mustrunas_test.go

@@ -109,14 +109,6 @@ func TestGenerate(t *testing.T) {
 }
 
 func TestValidate(t *testing.T) {
-	validPod := func() *api.Pod {
-		return &api.Pod{
-			Spec: api.PodSpec{
-				SecurityContext: &api.PodSecurityContext{},
-			},
-		}
-	}
-
 	tests := map[string]struct {
 		ranges []extensions.GroupIDRange
 		pod    *api.Pod
@@ -124,19 +116,16 @@ func TestValidate(t *testing.T) {
 		pass   bool
 	}{
 		"nil security context": {
-			pod: &api.Pod{},
 			ranges: []extensions.GroupIDRange{
 				{Min: 1, Max: 3},
 			},
 		},
 		"empty groups": {
-			pod: validPod(),
 			ranges: []extensions.GroupIDRange{
 				{Min: 1, Max: 3},
 			},
 		},
 		"not in range": {
-			pod:    validPod(),
 			groups: []int64{5},
 			ranges: []extensions.GroupIDRange{
 				{Min: 1, Max: 3},
@@ -144,7 +133,6 @@ func TestValidate(t *testing.T) {
 			},
 		},
 		"in range 1": {
-			pod:    validPod(),
 			groups: []int64{2},
 			ranges: []extensions.GroupIDRange{
 				{Min: 1, Max: 3},
@@ -152,7 +140,6 @@ func TestValidate(t *testing.T) {
 			pass: true,
 		},
 		"in range boundry min": {
-			pod:    validPod(),
 			groups: []int64{1},
 			ranges: []extensions.GroupIDRange{
 				{Min: 1, Max: 3},
@@ -160,7 +147,6 @@ func TestValidate(t *testing.T) {
 			pass: true,
 		},
 		"in range boundry max": {
-			pod:    validPod(),
 			groups: []int64{3},
 			ranges: []extensions.GroupIDRange{
 				{Min: 1, Max: 3},
@@ -168,7 +154,6 @@ func TestValidate(t *testing.T) {
 			pass: true,
 		},
 		"singular range": {
-			pod:    validPod(),
 			groups: []int64{4},
 			ranges: []extensions.GroupIDRange{
 				{Min: 4, Max: 4},
@@ -182,7 +167,7 @@ func TestValidate(t *testing.T) {
 		if err != nil {
 			t.Errorf("error creating strategy for %s: %v", k, err)
 		}
-		errs := s.Validate(v.pod, v.groups)
+		errs := s.Validate(nil, v.groups)
 		if v.pass && len(errs) > 0 {
 			t.Errorf("unexpected errors for %s: %v", k, errs)
 		}

pkg/security/podsecuritypolicy/group/runasany.go

@@ -33,17 +33,17 @@ func NewRunAsAny() (GroupStrategy, error) {
 }
 
 // Generate creates the group based on policy rules.  This strategy returns an empty slice.
-func (s *runAsAny) Generate(pod *api.Pod) ([]int64, error) {
+func (s *runAsAny) Generate(_ *api.Pod) ([]int64, error) {
 	return nil, nil
 }
 
 // Generate a single value to be applied.  This is used for FSGroup.  This strategy returns nil.
-func (s *runAsAny) GenerateSingle(pod *api.Pod) (*int64, error) {
+func (s *runAsAny) GenerateSingle(_ *api.Pod) (*int64, error) {
 	return nil, nil
 }
 
 // Validate ensures that the specified values fall within the range of the strategy.
-func (s *runAsAny) Validate(pod *api.Pod, groups []int64) field.ErrorList {
+func (s *runAsAny) Validate(_ *api.Pod, groups []int64) field.ErrorList {
 	return field.ErrorList{}
 
 }