dff9c14148
This can be used to install symlinks to arbitrary locations/targets on the device. Used to replace a make-built symlink. Bug: 205632228 Test: built and ran the emulator observed the /system/bin/hwservicemanager symlink is still there Change-Id: I6df922c8d919e6d56fa79702815a89c98f4d65ed
92 lines
3.2 KiB
Go
92 lines
3.2 KiB
Go
// Copyright 2023 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 etc
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import (
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"android/soong/android"
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"path/filepath"
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"strings"
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)
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func init() {
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RegisterInstallSymlinkBuildComponents(android.InitRegistrationContext)
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}
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func RegisterInstallSymlinkBuildComponents(ctx android.RegistrationContext) {
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ctx.RegisterModuleType("install_symlink", InstallSymlinkFactory)
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}
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// install_symlink can be used to install an symlink with an arbitrary target to an arbitrary path
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// on the device.
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func InstallSymlinkFactory() android.Module {
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module := &InstallSymlink{}
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module.AddProperties(&module.properties)
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android.InitAndroidMultiTargetsArchModule(module, android.DeviceSupported, android.MultilibCommon)
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return module
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}
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type InstallSymlinkProperties struct {
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// Where to install this symlink, relative to the partition it's installed on.
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// Which partition it's installed on can be controlled by the vendor, system_ext, ramdisk, etc.
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// properties.
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Installed_location string
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// The target of the symlink, aka where the symlink points.
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Symlink_target string
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}
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type InstallSymlink struct {
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android.ModuleBase
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properties InstallSymlinkProperties
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output android.Path
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installedPath android.InstallPath
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}
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func (m *InstallSymlink) GenerateAndroidBuildActions(ctx android.ModuleContext) {
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if filepath.Clean(m.properties.Symlink_target) != m.properties.Symlink_target {
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ctx.PropertyErrorf("symlink_target", "Should be a clean filepath")
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return
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}
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if filepath.Clean(m.properties.Installed_location) != m.properties.Installed_location {
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ctx.PropertyErrorf("installed_location", "Should be a clean filepath")
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return
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}
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if strings.HasPrefix(m.properties.Installed_location, "../") || strings.HasPrefix(m.properties.Installed_location, "/") {
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ctx.PropertyErrorf("installed_location", "Should not start with / or ../")
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return
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}
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out := android.PathForModuleOut(ctx, "out.txt")
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android.WriteFileRuleVerbatim(ctx, out, "")
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m.output = out
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name := filepath.Base(m.properties.Installed_location)
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installDir := android.PathForModuleInstall(ctx, filepath.Dir(m.properties.Installed_location))
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m.installedPath = ctx.InstallAbsoluteSymlink(installDir, name, m.properties.Symlink_target)
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}
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func (m *InstallSymlink) AndroidMkEntries() []android.AndroidMkEntries {
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return []android.AndroidMkEntries{{
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Class: "FAKE",
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// Need at least one output file in order for this to take effect.
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OutputFile: android.OptionalPathForPath(m.output),
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Include: "$(BUILD_PHONY_PACKAGE)",
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ExtraEntries: []android.AndroidMkExtraEntriesFunc{
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func(ctx android.AndroidMkExtraEntriesContext, entries *android.AndroidMkEntries) {
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entries.AddStrings("LOCAL_SOONG_INSTALL_SYMLINKS", m.installedPath.String())
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},
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},
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}}
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}
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