12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182 |
- // Copyright (C) 2021 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 filesystem
- import (
- "android/soong/android"
- "android/soong/linkerconfig"
- )
- type systemImage struct {
- filesystem
- properties systemImageProperties
- }
- type systemImageProperties struct {
- // Path to the input linker config json file.
- Linker_config_src *string
- }
- // android_system_image is a specialization of android_filesystem for the 'system' partition.
- // Currently, the only difference is the inclusion of linker.config.pb file which specifies
- // the provided and the required libraries to and from APEXes.
- func systemImageFactory() android.Module {
- module := &systemImage{}
- module.AddProperties(&module.properties)
- module.filesystem.buildExtraFiles = module.buildExtraFiles
- module.filesystem.filterPackagingSpecs = module.filterPackagingSpecs
- initFilesystemModule(&module.filesystem)
- return module
- }
- func (s *systemImage) buildExtraFiles(ctx android.ModuleContext, root android.OutputPath) android.OutputPaths {
- lc := s.buildLinkerConfigFile(ctx, root)
- // Add more files if needed
- return []android.OutputPath{lc}
- }
- func (s *systemImage) buildLinkerConfigFile(ctx android.ModuleContext, root android.OutputPath) android.OutputPath {
- input := android.PathForModuleSrc(ctx, android.String(s.properties.Linker_config_src))
- output := root.Join(ctx, "system", "etc", "linker.config.pb")
- // we need "Module"s for packaging items
- var otherModules []android.Module
- deps := s.gatherFilteredPackagingSpecs(ctx)
- ctx.WalkDeps(func(child, parent android.Module) bool {
- for _, ps := range child.PackagingSpecs() {
- if _, ok := deps[ps.RelPathInPackage()]; ok {
- otherModules = append(otherModules, child)
- }
- }
- return true
- })
- builder := android.NewRuleBuilder(pctx, ctx)
- linkerconfig.BuildLinkerConfig(ctx, builder, input, otherModules, output)
- builder.Build("conv_linker_config", "Generate linker config protobuf "+output.String())
- return output
- }
- // Filter the result of GatherPackagingSpecs to discard items targeting outside "system" partition.
- // Note that "apex" module installs its contents to "apex"(fake partition) as well
- // for symbol lookup by imitating "activated" paths.
- func (s *systemImage) filterPackagingSpecs(specs map[string]android.PackagingSpec) {
- for k, ps := range specs {
- if ps.Partition() != "system" {
- delete(specs, k)
- }
- }
- }
|