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// Copyright 2020 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 rust
import (
"android/soong/android"
"android/soong/cc"
"android/soong/fuzz"
"android/soong/rust/config"
"path/filepath"
)
func init() {
android.RegisterModuleType("rust_fuzz", RustFuzzFactory)
android.RegisterModuleType("rust_fuzz_host", RustFuzzHostFactory)
}
type fuzzDecorator struct {
*binaryDecorator
fuzzPackagedModule fuzz.FuzzPackagedModule
sharedLibraries android.RuleBuilderInstalls
installedSharedDeps []string
}
var _ compiler = (*fuzzDecorator)(nil)
// rust_binary produces a binary that is runnable on a device.
func RustFuzzFactory() android.Module {
module, _ := NewRustFuzz(android.HostAndDeviceSupported)
return module.Init()
}
func RustFuzzHostFactory() android.Module {
module, _ := NewRustFuzz(android.HostSupported)
return module.Init()
}
func NewRustFuzz(hod android.HostOrDeviceSupported) (*Module, *fuzzDecorator) {
module, binary := NewRustBinary(hod)
fuzz := &fuzzDecorator{
binaryDecorator: binary,
}
// Change the defaults for the binaryDecorator's baseCompiler
fuzz.binaryDecorator.baseCompiler.dir = "fuzz"
fuzz.binaryDecorator.baseCompiler.dir64 = "fuzz"
fuzz.binaryDecorator.baseCompiler.location = InstallInData
module.sanitize.SetSanitizer(cc.Fuzzer, true)
// The fuzzer runtime is not present for darwin or bionic host modules, so disable rust_fuzz modules for these.
android.AddLoadHook(module, func(ctx android.LoadHookContext) {
extraProps := struct {
Target struct {
Darwin struct {
Enabled *bool
}
Linux_bionic struct {
Enabled *bool
}
}
}{}
extraProps.Target.Darwin.Enabled = cc.BoolPtr(false)
extraProps.Target.Linux_bionic.Enabled = cc.BoolPtr(false)
ctx.AppendProperties(&extraProps)
})
module.compiler = fuzz
return module, fuzz
}
func (fuzzer *fuzzDecorator) compilerFlags(ctx ModuleContext, flags Flags) Flags {
flags = fuzzer.binaryDecorator.compilerFlags(ctx, flags)
// `../lib` for installed fuzz targets (both host and device), and `./lib` for fuzz target packages.
flags.LinkFlags = append(flags.LinkFlags, `-Wl,-rpath,\$$ORIGIN/lib`)
if ctx.InstallInVendor() {
flags.LinkFlags = append(flags.LinkFlags, `-Wl,-rpath,\$$ORIGIN/../../lib`)
} else {
flags.LinkFlags = append(flags.LinkFlags, `-Wl,-rpath,\$$ORIGIN/../lib`)
}
return flags
}
func (fuzzer *fuzzDecorator) compilerDeps(ctx DepsContext, deps Deps) Deps {
if libFuzzerRuntimeLibrary := config.LibFuzzerRuntimeLibrary(ctx.toolchain()); libFuzzerRuntimeLibrary != "" {
deps.StaticLibs = append(deps.StaticLibs, libFuzzerRuntimeLibrary)
}
deps.SharedLibs = append(deps.SharedLibs, "libc++")
deps.Rlibs = append(deps.Rlibs, "liblibfuzzer_sys")
deps = fuzzer.binaryDecorator.compilerDeps(ctx, deps)
return deps
}
func (fuzzer *fuzzDecorator) compilerProps() []interface{} {
return append(fuzzer.binaryDecorator.compilerProps(),
&fuzzer.fuzzPackagedModule.FuzzProperties)
}
func (fuzzer *fuzzDecorator) compile(ctx ModuleContext, flags Flags, deps PathDeps) buildOutput {
out := fuzzer.binaryDecorator.compile(ctx, flags, deps)
return out
}
func (fuzzer *fuzzDecorator) stdLinkage(ctx *depsContext) RustLinkage {
return RlibLinkage
}
func (fuzzer *fuzzDecorator) autoDep(ctx android.BottomUpMutatorContext) autoDep {
return rlibAutoDep
}
func (fuzz *fuzzDecorator) install(ctx ModuleContext) {
fuzz.fuzzPackagedModule = cc.PackageFuzzModule(ctx, fuzz.fuzzPackagedModule, pctx)
installBase := "fuzz"
// Grab the list of required shared libraries.
fuzz.sharedLibraries, _ = cc.CollectAllSharedDependencies(ctx)
for _, ruleBuilderInstall := range fuzz.sharedLibraries {
install := ruleBuilderInstall.To
fuzz.installedSharedDeps = append(fuzz.installedSharedDeps,
cc.SharedLibraryInstallLocation(
install, ctx.Host(), installBase, ctx.Arch().ArchType.String()))
// Also add the dependency on the shared library symbols dir.
if !ctx.Host() {
fuzz.installedSharedDeps = append(fuzz.installedSharedDeps,
cc.SharedLibrarySymbolsInstallLocation(install, installBase, ctx.Arch().ArchType.String()))
}
}
var fuzzData []android.DataPath
for _, d := range fuzz.fuzzPackagedModule.Corpus {
fuzzData = append(fuzzData, android.DataPath{SrcPath: d, RelativeInstallPath: "corpus", WithoutRel: true})
}
for _, d := range fuzz.fuzzPackagedModule.Data {
fuzzData = append(fuzzData, android.DataPath{SrcPath: d, RelativeInstallPath: "data"})
}
if d := fuzz.fuzzPackagedModule.Dictionary; d != nil {
fuzzData = append(fuzzData, android.DataPath{SrcPath: d, WithoutRel: true})
}
if d := fuzz.fuzzPackagedModule.Config; d != nil {
fuzzData = append(fuzzData, android.DataPath{SrcPath: d, WithoutRel: true})
}
fuzz.binaryDecorator.baseCompiler.dir = filepath.Join(
"fuzz", ctx.Target().Arch.ArchType.String(), ctx.ModuleName())
fuzz.binaryDecorator.baseCompiler.dir64 = filepath.Join(
"fuzz", ctx.Target().Arch.ArchType.String(), ctx.ModuleName())
fuzz.binaryDecorator.baseCompiler.installTestData(ctx, fuzzData)
fuzz.binaryDecorator.baseCompiler.install(ctx)
}
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