| // Copyright 2018 syzkaller project authors. All rights reserved. |
| // Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file. |
| |
| package build |
| |
| import ( |
| "fmt" |
| "path/filepath" |
| "strings" |
| "time" |
| |
| "github.com/google/syzkaller/pkg/osutil" |
| ) |
| |
| type gvisor struct{} |
| |
| func (gvisor gvisor) build(targetArch, vmType, kernelDir, outputDir, compiler, userspaceDir, |
| cmdlineFile, sysctlFile string, config []byte) error { |
| args := []string{"build", "--verbose_failures"} |
| if strings.Contains(" "+string(config)+" ", " -race ") { |
| args = append(args, "--features=race") |
| } |
| args = append(args, "runsc") |
| if _, err := osutil.RunCmd(20*time.Minute, kernelDir, compiler, args...); err != nil { |
| return err |
| } |
| if err := gvisor.copyBinary(kernelDir, outputDir); err != nil { |
| return err |
| } |
| if len(config) != 0 { |
| if err := osutil.WriteFile(filepath.Join(outputDir, "kernel.config"), config); err != nil { |
| return fmt.Errorf("failed to save kernel config: %v", err) |
| } |
| } |
| osutil.RunCmd(10*time.Minute, kernelDir, compiler, "shutdown") |
| return nil |
| } |
| |
| func (gvisor) copyBinary(kernelDir, outputDir string) error { |
| // Funny it's not possible to understand what bazel actually built... |
| for _, typ := range []string{ |
| "linux_amd64_pure_stripped", |
| "linux_amd64_static_stripped", |
| "linux_amd64_static_race_stripped", |
| } { |
| runsc := filepath.Join(kernelDir, "bazel-bin", "runsc", typ, "runsc") |
| if !osutil.IsExist(runsc) { |
| continue |
| } |
| return osutil.CopyFile(runsc, filepath.Join(outputDir, "image")) |
| } |
| return fmt.Errorf("failed to locate bazel output") |
| } |
| |
| func (gvisor) clean(kernelDir string) error { |
| // Let's assume that bazel always properly handles build without cleaning (until proven otherwise). |
| return nil |
| } |