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// Copyright (C) 2019 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 apex
import (
"path/filepath"
"strings"
"sync"
"android/soong/android"
"android/soong/cc"
"github.com/google/blueprint/proptools"
)
const (
vndkApexName = "com.android.vndk"
vndkApexNamePrefix = vndkApexName + ".v"
)
// apex_vndk creates a special variant of apex modules which contains only VNDK libraries.
// If `vndk_version` is specified, the VNDK libraries of the specified VNDK version are gathered automatically.
// If not specified, then the "current" versions are gathered.
func vndkApexBundleFactory() android.Module {
bundle := newApexBundle()
bundle.vndkApex = true
bundle.AddProperties(&bundle.vndkProperties)
android.AddLoadHook(bundle, func(ctx android.LoadHookContext) {
ctx.AppendProperties(&struct {
Compile_multilib *string
}{
proptools.StringPtr("both"),
})
})
return bundle
}
func (a *apexBundle) vndkVersion(config android.DeviceConfig) string {
vndkVersion := proptools.StringDefault(a.vndkProperties.Vndk_version, "current")
if vndkVersion == "current" {
vndkVersion = config.PlatformVndkVersion()
}
return vndkVersion
}
type apexVndkProperties struct {
// Indicates VNDK version of which this VNDK APEX bundles VNDK libs. Default is Platform VNDK Version.
Vndk_version *string
}
var (
vndkApexListKey = android.NewOnceKey("vndkApexList")
vndkApexListMutex sync.Mutex
)
func vndkApexList(config android.Config) map[string]string {
return config.Once(vndkApexListKey, func() interface{} {
return map[string]string{}
}).(map[string]string)
}
func apexVndkMutator(mctx android.TopDownMutatorContext) {
if ab, ok := mctx.Module().(*apexBundle); ok && ab.vndkApex {
if ab.IsNativeBridgeSupported() {
mctx.PropertyErrorf("native_bridge_supported", "%q doesn't support native bridge binary.", mctx.ModuleType())
}
vndkVersion := ab.vndkVersion(mctx.DeviceConfig())
// Ensure VNDK APEX mount point is formatted as com.android.vndk.v###
ab.properties.Apex_name = proptools.StringPtr(vndkApexNamePrefix + vndkVersion)
// vndk_version should be unique
vndkApexListMutex.Lock()
defer vndkApexListMutex.Unlock()
vndkApexList := vndkApexList(mctx.Config())
if other, ok := vndkApexList[vndkVersion]; ok {
mctx.PropertyErrorf("vndk_version", "%v is already defined in %q", vndkVersion, other)
}
vndkApexList[vndkVersion] = mctx.ModuleName()
}
}
func apexVndkDepsMutator(mctx android.BottomUpMutatorContext) {
if m, ok := mctx.Module().(*cc.Module); ok && cc.IsForVndkApex(mctx, m) {
vndkVersion := m.VndkVersion()
// For VNDK-Lite device, we gather core-variants of VNDK-Sp libraries, which doesn't have VNDK version defined
if vndkVersion == "" {
vndkVersion = mctx.DeviceConfig().PlatformVndkVersion()
}
vndkApexList := vndkApexList(mctx.Config())
if vndkApex, ok := vndkApexList[vndkVersion]; ok {
mctx.AddReverseDependency(mctx.Module(), sharedLibTag, vndkApex)
}
} else if a, ok := mctx.Module().(*apexBundle); ok && a.vndkApex {
vndkVersion := proptools.StringDefault(a.vndkProperties.Vndk_version, "current")
mctx.AddDependency(mctx.Module(), prebuiltTag, cc.VndkLibrariesTxtModules(vndkVersion)...)
}
}
// name is module.BaseModuleName() which is used as LOCAL_MODULE_NAME and also LOCAL_OVERRIDES_*
func makeCompatSymlinks(name string, ctx android.ModuleContext) (symlinks []string) {
// small helper to add symlink commands
addSymlink := func(target, dir, linkName string) {
link := filepath.Join(dir, linkName)
symlinks = append(symlinks, "mkdir -p "+dir+" && rm -rf "+link+" && ln -sf "+target+" "+link)
}
// TODO(b/142911355): [VNDK APEX] Fix hard-coded references to /system/lib/vndk
// When all hard-coded references are fixed, remove symbolic links
// Note that we should keep following symlinks for older VNDKs (<=29)
// Since prebuilt vndk libs still depend on system/lib/vndk path
if strings.HasPrefix(name, vndkApexNamePrefix) {
vndkVersion := strings.TrimPrefix(name, vndkApexNamePrefix)
if ver, err := android.ApiLevelFromUser(ctx, vndkVersion); err != nil {
ctx.ModuleErrorf("apex_vndk should be named as %v<ver:number>: %s", vndkApexNamePrefix, name)
return
} else if ver.GreaterThan(android.SdkVersion_Android10) {
return
}
// the name of vndk apex is formatted "com.android.vndk.v" + version
apexName := vndkApexNamePrefix + vndkVersion
if ctx.Config().Android64() {
addSymlink("/apex/"+apexName+"/lib64", "$(TARGET_OUT)/lib64", "vndk-sp-"+vndkVersion)
addSymlink("/apex/"+apexName+"/lib64", "$(TARGET_OUT)/lib64", "vndk-"+vndkVersion)
}
if !ctx.Config().Android64() || ctx.DeviceConfig().DeviceSecondaryArch() != "" {
addSymlink("/apex/"+apexName+"/lib", "$(TARGET_OUT)/lib", "vndk-sp-"+vndkVersion)
addSymlink("/apex/"+apexName+"/lib", "$(TARGET_OUT)/lib", "vndk-"+vndkVersion)
}
return
}
// http://b/121248172 - create a link from /system/usr/icu to
// /apex/com.android.i18n/etc/icu so that apps can find the ICU .dat file.
// A symlink can't overwrite a directory and the /system/usr/icu directory once
// existed so the required structure must be created whatever we find.
if name == "com.android.i18n" {
addSymlink("/apex/com.android.i18n/etc/icu", "$(TARGET_OUT)/usr", "icu")
return
}
// TODO(b/124106384): Clean up compat symlinks for ART binaries.
if strings.HasPrefix(name, "com.android.art.") {
addSymlink("/apex/com.android.art/bin/dalvikvm", "$(TARGET_OUT)/bin", "dalvikvm")
dex2oat := "dex2oat32"
if ctx.Config().Android64() {
dex2oat = "dex2oat64"
}
addSymlink("/apex/com.android.art/bin/"+dex2oat, "$(TARGET_OUT)/bin", "dex2oat")
return
}
return
}
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