android_system_sepolicy/build/soong/validate_bindings.go
Pawan Wagh 54eebadb3e sepolicy : check if missing dependencies are allowed
Panic only if missing dependencies are not allowed while checking
fuzzer bindings. This fix should breakages on branches like master-art
where SOONG_ALLOW_MISSING_DEPENDENCIES is set.

Bug: 246590424
Test: m
Change-Id: I0f908f27de5f761495848f461c7d479117f9feda
2022-10-12 22:32:58 +00:00

110 lines
3.7 KiB
Go

// Copyright (C) 2022 The Android Open Source Project
//
// 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 selinux
import (
"encoding/json"
"fmt"
"android/soong/android"
)
func init() {
android.RegisterModuleType("fuzzer_bindings_test", fuzzerBindingsTestFactory)
android.PreArchMutators(registerFuzzerMutators)
}
func registerFuzzerMutators(ctx android.RegisterMutatorsContext) {
ctx.BottomUp("addFuzzerConfigDeps", addFuzzerConfigDeps).Parallel()
}
func addFuzzerConfigDeps(ctx android.BottomUpMutatorContext) {
if _, ok := ctx.Module().(*fuzzerBindingsTestModule); ok {
for _, fuzzers := range ServiceFuzzerBindings {
for _, fuzzer := range fuzzers {
if !ctx.OtherModuleExists(fuzzer) && !ctx.Config().AllowMissingDependencies() {
panic(fmt.Errorf("Fuzzer doesn't exist : %s", fuzzer))
}
}
}
}
}
type bindingsTestProperties struct {
// Contexts files to be tested.
Srcs []string `android:"path"`
}
type fuzzerBindingsTestModule struct {
android.ModuleBase
tool string
properties bindingsTestProperties
testTimestamp android.ModuleOutPath
}
// fuzzer_bindings_test checks if a fuzzer is implemented for every service in service_contexts
func fuzzerBindingsTestFactory() android.Module {
m := &fuzzerBindingsTestModule{tool: "fuzzer_bindings_check"}
m.AddProperties(&m.properties)
android.InitAndroidArchModule(m, android.DeviceSupported, android.MultilibCommon)
return m
}
func (m *fuzzerBindingsTestModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
tool := m.tool
if tool != "fuzzer_bindings_check" {
panic(fmt.Errorf("%q: unknown tool name: %q", ctx.ModuleName(), tool))
}
if len(m.properties.Srcs) == 0 {
ctx.PropertyErrorf("srcs", "can't be empty")
return
}
// Generate a json file which contains existing bindings
rootPath := android.PathForIntermediates(ctx, "bindings.json")
jsonString, parseError := json.Marshal(ServiceFuzzerBindings)
if parseError != nil {
panic(fmt.Errorf("Error while marshalling ServiceFuzzerBindings dict. Check Format"))
}
android.WriteFileRule(ctx, rootPath, string(jsonString))
//input module json, service context and binding files here
srcs := android.PathsForModuleSrc(ctx, m.properties.Srcs)
rule := android.NewRuleBuilder(pctx, ctx)
rule.Command().BuiltTool(tool).Flag("-s").Inputs(srcs).Flag("-b").Input(rootPath)
// Every Soong module needs to generate an output even if it doesn't require it
m.testTimestamp = android.PathForModuleOut(ctx, "timestamp")
rule.Command().Text("touch").Output(m.testTimestamp)
rule.Build("fuzzer_bindings_test", "running service:fuzzer bindings test: "+ctx.ModuleName())
}
func (m *fuzzerBindingsTestModule) AndroidMkEntries() []android.AndroidMkEntries {
return []android.AndroidMkEntries{android.AndroidMkEntries{
Class: "FAKE",
// OutputFile is needed, even though BUILD_PHONY_PACKAGE doesn't use it.
// Without OutputFile this module won't be exported to Makefile.
OutputFile: android.OptionalPathForPath(m.testTimestamp),
Include: "$(BUILD_PHONY_PACKAGE)",
ExtraEntries: []android.AndroidMkExtraEntriesFunc{
func(ctx android.AndroidMkExtraEntriesContext, entries *android.AndroidMkEntries) {
entries.SetString("LOCAL_ADDITIONAL_DEPENDENCIES", m.testTimestamp.String())
},
},
}}
}