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// Copyright
2024 Google Inc. All rights reserved.
//
// 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 android
import (
"fmt"
"github.com/google/blueprint/proptools"
)
func init() {
registerBuildPropComponents(InitRegistrationContext)
}
func registerBuildPropComponents(ctx RegistrationContext) {
ctx.RegisterModuleType(
"build_prop", BuildPropFactory)
ctx.RegisterModuleType(
"android_info", AndroidInfoFactory)
}
type buildPropProperties struct {
// Output
file name. Defaults
to "build.prop"
Stem
*string
// List
of prop names
to exclude. This affects not only common build properties but also
// properties
in prop_files.
Block_list []
string
// Files
to be appended
at the end
of build.prop. These files are appended after
// post_process_props without
any further checking.
Footer_files []
string `android:
"path"`
// Path
to a JSON
file containing product configs.
Product_config
*string `android:"path"`
// Path
to android-info.txt
file containing board specific info.
// This
is empty
for build.prop
of all partitions except vendor.
Android_info
*string `android:"path"`
// Optional subdirectory
under which this
file is installed
into
Relative_install_path
*string
}
type buildPropModule struct {
ModuleBase
properties buildPropProperties
outputFilePath Path
installPath InstallPath
}
func (p
*buildPropModule) stem() string {
return proptools.StringDefault(p.properties.Stem,
"build.prop")
}
func (p
*buildPropModule) propFiles(ctx ModuleContext) Paths {
partition := p.partition(ctx.DeviceConfig())
if partition ==
"system" {
return ctx.Config().SystemPropFiles(ctx)
}
else if partition ==
"system_ext" {
return ctx.Config().SystemExtPropFiles(ctx)
}
else if partition ==
"product" {
return ctx.Config().ProductPropFiles(ctx)
}
else if partition ==
"odm" {
return ctx.Config().OdmPropFiles(ctx)
}
else if partition ==
"vendor" {
if p.properties.Android_info != nil {
androidInfo := PathForModuleSrc(ctx, proptools.
String(p.properties.Android_info))
return
append(ctx.Config().VendorPropFiles(ctx), androidInfo)
}
return ctx.Config().VendorPropFiles(ctx)
}
return nil
}
func shouldAddBuildThumbprint(config Config) bool {
knownOemProperties := []
string{
"ro.product.brand",
"ro.product.name",
"ro.product.device",
}
for _, knownProp := range knownOemProperties {
if InList(knownProp, config.OemProperties()) {
return true
}
}
return false
}
// Can
't use PartitionTag() because PartitionTag() returns the partition this module is actually
// installed (e.g. odm
module's partition tag can be either "odm" or "vendor")
func (p
*buildPropModule) partition(config DeviceConfig) string {
if p.SocSpecific() {
return
"vendor"
}
else if p.DeviceSpecific() {
return
"odm"
}
else if p.ProductSpecific() {
return
"product"
}
else if p.SystemExtSpecific() {
return
"system_ext"
}
else if p.InstallInSystemDlkm() {
return
"system_dlkm"
}
else if p.InstallInVendorDlkm() {
return
"vendor_dlkm"
}
else if p.InstallInOdmDlkm() {
return
"odm_dlkm"
}
else if p.InstallInRamdisk() {
//
From this hardcoding
in make:
//
https:// style='color:red'>cs.android.com/android/platform/superproject/main/+/main:build/make/core/sysprop.mk;l=311;drc=274435657e4682e5cee3fffd11fb301ab32a828d
return "bootimage"
}
return "system"
}
func (p *buildPropModule) GenerateAndroidBuildActions(ctx ModuleContext) {
if !p.SocSpecific() && p.properties.Android_info != nil {
ctx.ModuleErrorf("Android_info cannot be set if build.prop is not installed in vendor partition")
}
outputFilePath := PathForModuleOut(ctx, "build.prop")
partition := p.partition(ctx.DeviceConfig())
rule := NewRuleBuilder(pctx, ctx).SandboxDisabled()
config := ctx.Config()
cmd := rule.Command().BuiltTool("gen_build_prop")
cmd.FlagWithInput("--build-hostname-file=", config.BuildHostnameFile(ctx))
cmd.FlagWithInput("--build-number-file=", config.BuildNumberFile(ctx))
cmd.FlagWithInput("--build-uuid-file=", config.BuildUUIDFile(ctx))
cmd.FlagWithInput("--build-fingerprint-file=", config.BuildFingerprintFile(ctx))
cmd.FlagWithInput("--build-system-fingerprint-file=", config.BuildSystemFingerprintFile(ctx))
// Export build thumbprint only if the product has specified at least one oem fingerprint property
// b/17888863
if shouldAddBuildThumbprint(config) {
cmd.FlagWithInput("--build-thumbprint-file=", config.BuildThumbprintFile(ctx))
}
cmd.FlagWithArg("--build-username=", config.Getenv("BUILD_USERNAME"))
// shouldn't depend on BUILD_DATETIME_FILE to prevent from rebuilding on every incremental
// build.
cmd.FlagWithArg("--date-file=", ctx.Config().Getenv("BUILD_DATETIME_FILE"))
cmd.OrderOnly(config.BuildDateFile(ctx))
cmd.FlagWithInput("--platform-preview-sdk-fingerprint-file=", ApiFingerprintPath(ctx))
cmd.FlagWithInput("--product-config=", PathForModuleSrc(ctx, proptools.String(p.properties.Product_config)))
cmd.FlagWithArg("--partition=", partition)
cmd.FlagForEachInput("--prop-files=", p.propFiles(ctx))
cmd.FlagWithOutput("--out=", outputFilePath)
postProcessCmd := rule.Command().BuiltTool("post_process_props")
if ctx.DeviceConfig().BuildBrokenDupSysprop() {
postProcessCmd.Flag("--allow-dup")
}
postProcessCmd.FlagWithArg("--sdk-version ", config.PlatformSdkVersion().String())
if ctx.Config().EnableUffdGc() == "default" {
postProcessCmd.FlagWithInput("--kernel-version-file-for-uffd-gc ", PathForOutput(ctx, "dexpreopt/kernel_version_for_uffd_gc.txt"))
} else {
// still need to pass an empty string to kernel-version-file-for-uffd-gc
postProcessCmd.FlagWithArg("--kernel-version-file-for-uffd-gc ", `""`)
}
postProcessCmd.Text(outputFilePath.String())
postProcessCmd.Flags(p.properties.Block_list)
for _, footer := range p.properties.Footer_files {
path := PathForModuleSrc(ctx, footer)
rule.appendText(outputFilePath, "####################################")
rule.appendTextf(outputFilePath, "# Adding footer from %v", footer)
rule.appendTextf(outputFilePath, "# with path %v", path)
rule.appendText(outputFilePath, "####################################")
rule.Command().Text("cat").FlagWithInput("", path).FlagWithArg(">> ", outputFilePath.String())
}
rule.appendText(outputFilePath, "# end of file")
rule.Build(ctx.ModuleName(), "generating build.prop")
p.installPath = PathForModuleInstall(ctx, proptools.String(p.properties.Relative_install_path))
ctx.InstallFile(p.installPath, p.stem(), outputFilePath)
ctx.SetOutputFiles(Paths{outputFilePath}, "")
p.outputFilePath = outputFilePath
}
func (r *RuleBuilder) appendText(path ModuleOutPath, text string) {
r.Command().Text("echo").Text(proptools.NinjaAndShellEscape(text)).FlagWithArg(">> ", path.String())
}
func (r *RuleBuilder) appendTextf(path ModuleOutPath, format string, a ...any) {
r.appendText(path, fmt.Sprintf(format, a...))
}
func (p *buildPropModule) AndroidMkEntries() []AndroidMkEntries {
return []AndroidMkEntries{{
Class: "ETC",
OutputFile: OptionalPathForPath(p.outputFilePath),
ExtraEntries: []AndroidMkExtraEntriesFunc{
func(ctx AndroidMkExtraEntriesContext, entries *AndroidMkEntries) {
entries.SetString("LOCAL_MODULE_PATH", p.installPath.String())
entries.SetString("LOCAL_INSTALLED_MODULE_STEM", p.outputFilePath.Base())
},
},
}}
}
// build_prop module generates {partition}/build.prop file. At first common build properties are
// printed based on Soong config variables. And then prop_files are printed as-is. Finally,
// post_process_props tool is run to check if the result build.prop is valid or not.
func BuildPropFactory() Module {
module := &buildPropModule{}
module.AddProperties(&module.properties)
InitAndroidArchModule(module, DeviceSupported, MultilibCommon)
return module
}