1// Copyright (C) 2019 The Android Open Source Project 2// 3// Licensed under the Apache License, Version 2.0 (the "License"); 4// you may not use this file except in compliance with the License. 5// You may obtain a copy of the License at 6// 7// http://www.apache.org/licenses/LICENSE-2.0 8// 9// Unless required by applicable law or agreed to in writing, software 10// distributed under the License is distributed on an "AS IS" BASIS, 11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12// See the License for the specific language governing permissions and 13// limitations under the License. 14 15package fs_config 16 17import ( 18 "android/soong/android" 19) 20 21var pctx = android.NewPackageContext("android/soong/fs_config") 22 23func init() { 24 android.RegisterModuleType("target_fs_config_gen_filegroup", targetFSConfigGenFactory) 25} 26 27// target_fs_config_gen_filegroup is used to expose the files pointed to by TARGET_FS_CONFIG_GEN to 28// genrules in Soong. If TARGET_FS_CONFIG_GEN is empty, it will export an empty file instead. 29func targetFSConfigGenFactory() android.Module { 30 module := &targetFSConfigGen{} 31 android.InitAndroidModule(module) 32 return module 33} 34 35var _ android.SourceFileProducer = (*targetFSConfigGen)(nil) 36 37type targetFSConfigGen struct { 38 android.ModuleBase 39 paths android.Paths 40} 41 42func (targetFSConfigGen) DepsMutator(ctx android.BottomUpMutatorContext) {} 43 44func (t *targetFSConfigGen) GenerateAndroidBuildActions(ctx android.ModuleContext) { 45 if ret := ctx.DeviceConfig().TargetFSConfigGen(); len(ret) != 0 { 46 t.paths = android.PathsForSource(ctx, ret) 47 } else { 48 path := android.PathForModuleGen(ctx, "empty") 49 t.paths = android.Paths{path} 50 51 rule := android.NewRuleBuilder(pctx, ctx) 52 rule.Command().Text("rm -rf").Output(path) 53 rule.Command().Text("touch").Output(path) 54 rule.Build("fs_config_empty", "create empty file") 55 } 56} 57 58func (t *targetFSConfigGen) Srcs() android.Paths { 59 return t.paths 60} 61