54351867fa
Revert submission 3066748-duplicate_entry_fs Reason for revert: b/338159248 Reverted changes: /q/submissionid:3066748-duplicate_entry_fs Change-Id: I8aacdb36efce8343c3713542eee209e71bde660b
102 lines
3.7 KiB
Go
102 lines
3.7 KiB
Go
// Copyright (C) 2021 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package filesystem
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import (
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"android/soong/android"
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"android/soong/linkerconfig"
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)
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type systemImage struct {
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filesystem
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properties systemImageProperties
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}
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type systemImageProperties struct {
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// Path to the input linker config json file.
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Linker_config_src *string
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}
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// android_system_image is a specialization of android_filesystem for the 'system' partition.
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// Currently, the only difference is the inclusion of linker.config.pb file which specifies
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// the provided and the required libraries to and from APEXes.
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func systemImageFactory() android.Module {
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module := &systemImage{}
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module.AddProperties(&module.properties)
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module.filesystem.buildExtraFiles = module.buildExtraFiles
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module.filesystem.filterPackagingSpec = module.filterPackagingSpec
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initFilesystemModule(&module.filesystem)
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return module
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}
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func (s *systemImage) buildExtraFiles(ctx android.ModuleContext, root android.OutputPath) android.OutputPaths {
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if s.filesystem.properties.Partition_type != nil {
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ctx.PropertyErrorf("partition_type", "partition_type must be unset on an android_system_image module. It is assumed to be 'system'.")
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}
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lc := s.buildLinkerConfigFile(ctx, root)
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// Add more files if needed
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return []android.OutputPath{lc}
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}
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func (s *systemImage) buildLinkerConfigFile(ctx android.ModuleContext, root android.OutputPath) android.OutputPath {
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input := android.PathForModuleSrc(ctx, android.String(s.properties.Linker_config_src))
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output := root.Join(ctx, "system", "etc", "linker.config.pb")
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// we need "Module"s for packaging items
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modulesInPackageByModule := make(map[android.Module]bool)
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modulesInPackageByName := make(map[string]bool)
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deps := s.gatherFilteredPackagingSpecs(ctx)
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ctx.WalkDeps(func(child, parent android.Module) bool {
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for _, ps := range child.PackagingSpecs() {
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if _, ok := deps[ps.RelPathInPackage()]; ok {
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modulesInPackageByModule[child] = true
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modulesInPackageByName[child.Name()] = true
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return true
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}
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}
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return true
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})
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provideModules := make([]android.Module, 0, len(modulesInPackageByModule))
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for mod := range modulesInPackageByModule {
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provideModules = append(provideModules, mod)
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}
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var requireModules []android.Module
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ctx.WalkDeps(func(child, parent android.Module) bool {
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_, parentInPackage := modulesInPackageByModule[parent]
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_, childInPackageName := modulesInPackageByName[child.Name()]
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// When parent is in the package, and child (or its variant) is not, this can be from an interface.
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if parentInPackage && !childInPackageName {
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requireModules = append(requireModules, child)
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}
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return true
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})
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builder := android.NewRuleBuilder(pctx, ctx)
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linkerconfig.BuildLinkerConfig(ctx, builder, input, provideModules, requireModules, output)
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builder.Build("conv_linker_config", "Generate linker config protobuf "+output.String())
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return output
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}
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// Filter the result of GatherPackagingSpecs to discard items targeting outside "system" partition.
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// Note that "apex" module installs its contents to "apex"(fake partition) as well
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// for symbol lookup by imitating "activated" paths.
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func (s *systemImage) filterPackagingSpec(ps android.PackagingSpec) bool {
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return ps.Partition() == "system"
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}
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