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