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// Copyright 2017 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 cc
import (
"sort"
"strings"
"sync"
"android/soong/android"
)
type VndkProperties struct {
Vndk struct {
// declared as a VNDK or VNDK-SP module. The vendor variant
// will be installed in /system instead of /vendor partition.
//
// `vendor_vailable` must be explicitly set to either true or
// false together with `vndk: {enabled: true}`.
Enabled *bool
// declared as a VNDK-SP module, which is a subset of VNDK.
//
// `vndk: { enabled: true }` must set together.
//
// All these modules are allowed to link to VNDK-SP or LL-NDK
// modules only. Other dependency will cause link-type errors.
//
// If `support_system_process` is not set or set to false,
// the module is VNDK-core and can link to other VNDK-core,
// VNDK-SP or LL-NDK modules only.
Support_system_process *bool
// Extending another module
Extends *string
}
}
type vndkdep struct {
Properties VndkProperties
}
func (vndk *vndkdep) props() []interface{} {
return []interface{}{&vndk.Properties}
}
func (vndk *vndkdep) begin(ctx BaseModuleContext) {}
func (vndk *vndkdep) deps(ctx BaseModuleContext, deps Deps) Deps {
return deps
}
func (vndk *vndkdep) isVndk() bool {
return Bool(vndk.Properties.Vndk.Enabled)
}
func (vndk *vndkdep) isVndkSp() bool {
return Bool(vndk.Properties.Vndk.Support_system_process)
}
func (vndk *vndkdep) isVndkExt() bool {
return vndk.Properties.Vndk.Extends != nil
}
func (vndk *vndkdep) getVndkExtendsModuleName() string {
return String(vndk.Properties.Vndk.Extends)
}
func (vndk *vndkdep) typeName() string {
if !vndk.isVndk() {
return "native:vendor"
}
if !vndk.isVndkExt() {
if !vndk.isVndkSp() {
return "native:vendor:vndk"
}
return "native:vendor:vndksp"
}
if !vndk.isVndkSp() {
return "native:vendor:vndkext"
}
return "native:vendor:vndkspext"
}
func (vndk *vndkdep) vndkCheckLinkType(ctx android.ModuleContext, to *Module, tag dependencyTag) {
if to.linker == nil {
return
}
if !vndk.isVndk() {
// Non-VNDK modules (those installed to /vendor) can't depend on modules marked with
// vendor_available: false.
violation := false
if lib, ok := to.linker.(*llndkStubDecorator); ok && !Bool(lib.Properties.Vendor_available) {
violation = true
} else {
if _, ok := to.linker.(libraryInterface); ok && to.VendorProperties.Vendor_available != nil && !Bool(to.VendorProperties.Vendor_available) {
// Vendor_available == nil && !Bool(Vendor_available) should be okay since
// it means a vendor-only library which is a valid dependency for non-VNDK
// modules.
violation = true
}
}
if violation {
ctx.ModuleErrorf("Vendor module that is not VNDK should not link to %q which is marked as `vendor_available: false`", to.Name())
}
}
if lib, ok := to.linker.(*libraryDecorator); !ok || !lib.shared() {
// Check only shared libraries.
// Other (static and LL-NDK) libraries are allowed to link.
return
}
if !to.Properties.UseVndk {
ctx.ModuleErrorf("(%s) should not link to %q which is not a vendor-available library",
vndk.typeName(), to.Name())
return
}
if tag == vndkExtDepTag {
// Ensure `extends: "name"` property refers a vndk module that has vendor_available
// and has identical vndk properties.
if to.vndkdep == nil || !to.vndkdep.isVndk() {
ctx.ModuleErrorf("`extends` refers a non-vndk module %q", to.Name())
return
}
if vndk.isVndkSp() != to.vndkdep.isVndkSp() {
ctx.ModuleErrorf(
"`extends` refers a module %q with mismatched support_system_process",
to.Name())
return
}
if !Bool(to.VendorProperties.Vendor_available) {
ctx.ModuleErrorf(
"`extends` refers module %q which does not have `vendor_available: true`",
to.Name())
return
}
}
if to.vndkdep == nil {
return
}
// Check the dependencies of VNDK shared libraries.
if !vndkIsVndkDepAllowed(vndk, to.vndkdep) {
ctx.ModuleErrorf("(%s) should not link to %q (%s)",
vndk.typeName(), to.Name(), to.vndkdep.typeName())
return
}
}
func vndkIsVndkDepAllowed(from *vndkdep, to *vndkdep) bool {
// Check the dependencies of VNDK, VNDK-Ext, VNDK-SP, VNDK-SP-Ext and vendor modules.
if from.isVndkExt() {
if from.isVndkSp() {
// VNDK-SP-Ext may depend on VNDK-SP, VNDK-SP-Ext, or vendor libs (excluding
// VNDK and VNDK-Ext).
return to.isVndkSp() || !to.isVndk()
}
// VNDK-Ext may depend on VNDK, VNDK-Ext, VNDK-SP, VNDK-SP-Ext, or vendor libs.
return true
}
if from.isVndk() {
if to.isVndkExt() {
// VNDK-core and VNDK-SP must not depend on VNDK extensions.
return false
}
if from.isVndkSp() {
// VNDK-SP must only depend on VNDK-SP.
return to.isVndkSp()
}
// VNDK-core may depend on VNDK-core or VNDK-SP.
return to.isVndk()
}
// Vendor modules may depend on VNDK, VNDK-Ext, VNDK-SP, VNDK-SP-Ext, or vendor libs.
return true
}
var (
vndkCoreLibraries []string
vndkSpLibraries []string
llndkLibraries []string
vndkPrivateLibraries []string
vndkLibrariesLock sync.Mutex
)
// gather list of vndk-core, vndk-sp, and ll-ndk libs
func vndkMutator(mctx android.BottomUpMutatorContext) {
if m, ok := mctx.Module().(*Module); ok && m.Enabled() {
if lib, ok := m.linker.(*llndkStubDecorator); ok {
vndkLibrariesLock.Lock()
defer vndkLibrariesLock.Unlock()
name := strings.TrimSuffix(m.Name(), llndkLibrarySuffix)
if !inList(name, llndkLibraries) {
llndkLibraries = append(llndkLibraries, name)
sort.Strings(llndkLibraries)
}
if !Bool(lib.Properties.Vendor_available) {
if !inList(name, vndkPrivateLibraries) {
vndkPrivateLibraries = append(vndkPrivateLibraries, name)
sort.Strings(vndkPrivateLibraries)
}
}
} else {
lib, is_lib := m.linker.(*libraryDecorator)
prebuilt_lib, is_prebuilt_lib := m.linker.(*prebuiltLibraryLinker)
if (is_lib && lib.shared()) || (is_prebuilt_lib && prebuilt_lib.shared()) {
name := strings.TrimPrefix(m.Name(), "prebuilt_")
if m.vndkdep.isVndk() && !m.vndkdep.isVndkExt() {
vndkLibrariesLock.Lock()
defer vndkLibrariesLock.Unlock()
if m.vndkdep.isVndkSp() {
if !inList(name, vndkSpLibraries) {
vndkSpLibraries = append(vndkSpLibraries, name)
sort.Strings(vndkSpLibraries)
}
} else {
if !inList(name, vndkCoreLibraries) {
vndkCoreLibraries = append(vndkCoreLibraries, name)
sort.Strings(vndkCoreLibraries)
}
}
if !Bool(m.VendorProperties.Vendor_available) {
if !inList(name, vndkPrivateLibraries) {
vndkPrivateLibraries = append(vndkPrivateLibraries, name)
sort.Strings(vndkPrivateLibraries)
}
}
}
}
}
}
}
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