41c34d6a70
Installs backwards compatibility cil files. Bug: 183362912 Test: Presubmit Test: Add a $(ver).compat.cil under SYSTEM_EXT_PRIVATE_SEPOLICY_DIR and verify the file is installed under /system_ext/etc/selinux/mapping/ Change-Id: I5e2c6b8dfa8df431edfe96f29daae463b130367f
113 lines
3.5 KiB
Go
113 lines
3.5 KiB
Go
// Copyright 2021 The Android Open Source Project
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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 selinux
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import (
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"github.com/google/blueprint/proptools"
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"android/soong/android"
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)
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func init() {
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android.RegisterModuleType("se_compat_cil", compatCilFactory)
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}
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// se_compat_cil collects and installs backwards compatibility cil files.
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func compatCilFactory() android.Module {
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c := &compatCil{}
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c.AddProperties(&c.properties)
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android.InitAndroidArchModule(c, android.DeviceSupported, android.MultilibCommon)
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return c
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}
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type compatCil struct {
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android.ModuleBase
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properties compatCilProperties
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installSource android.Path
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installPath android.InstallPath
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}
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type compatCilProperties struct {
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// List of source files. Can reference se_filegroup type modules with the ":module" syntax.
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Srcs []string
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// Output file name. Defaults to module name if unspecified.
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Stem *string
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}
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func (c *compatCil) stem() string {
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return proptools.StringDefault(c.properties.Stem, c.Name())
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}
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func (c *compatCil) expandSeSources(ctx android.ModuleContext) android.Paths {
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srcPaths := make(android.Paths, 0, len(c.properties.Srcs))
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for _, src := range c.properties.Srcs {
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if m := android.SrcIsModule(src); m != "" {
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module := ctx.GetDirectDepWithTag(m, android.SourceDepTag)
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if module == nil {
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// Error would have been handled by ExtractSourcesDeps
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continue
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}
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if fg, ok := module.(*fileGroup); ok {
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if c.SystemExtSpecific() {
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srcPaths = append(srcPaths, fg.SystemExtPrivateSrcs()...)
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} else {
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srcPaths = append(srcPaths, fg.SystemPrivateSrcs()...)
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}
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} else {
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ctx.PropertyErrorf("srcs", "%q is not an se_filegroup", m)
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}
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} else {
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srcPaths = append(srcPaths, android.PathForModuleSrc(ctx, src))
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}
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}
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return srcPaths
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}
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func (c *compatCil) DepsMutator(ctx android.BottomUpMutatorContext) {
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android.ExtractSourcesDeps(ctx, c.properties.Srcs)
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}
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func (c *compatCil) GenerateAndroidBuildActions(ctx android.ModuleContext) {
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if c.ProductSpecific() || c.SocSpecific() || c.DeviceSpecific() {
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ctx.ModuleErrorf("Compat cil files only support system and system_ext partitions")
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}
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srcPaths := c.expandSeSources(ctx)
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out := android.PathForModuleGen(ctx, c.Name())
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ctx.Build(pctx, android.BuildParams{
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Rule: android.Cat,
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Inputs: srcPaths,
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Output: out,
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Description: "Combining compat cil for " + c.Name(),
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})
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c.installPath = android.PathForModuleInstall(ctx, "etc", "selinux", "mapping")
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c.installSource = out
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ctx.InstallFile(c.installPath, c.stem(), c.installSource)
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}
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func (c *compatCil) AndroidMkEntries() []android.AndroidMkEntries {
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return []android.AndroidMkEntries{android.AndroidMkEntries{
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Class: "ETC",
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OutputFile: android.OptionalPathForPath(c.installSource),
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ExtraEntries: []android.AndroidMkExtraEntriesFunc{
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func(ctx android.AndroidMkExtraEntriesContext, entries *android.AndroidMkEntries) {
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entries.SetPath("LOCAL_MODULE_PATH", c.installPath.ToMakePath())
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entries.SetString("LOCAL_INSTALLED_MODULE_STEM", c.stem())
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},
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},
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}}
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}
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