| // +build !windows |
| |
| package archutil |
| |
| import ( |
| "bytes" |
| "compress/gzip" |
| "io" |
| "io/ioutil" |
| "os" |
| "os/exec" |
| "path/filepath" |
| "syscall" |
| ) |
| |
| func withChroot(cmd *exec.Cmd, dir string) { |
| cmd.SysProcAttr = &syscall.SysProcAttr{ |
| Chroot: dir, |
| } |
| } |
| |
| func check(bin string) error { |
| tmpdir, err := ioutil.TempDir("", "qemu-check") |
| if err != nil { |
| return err |
| } |
| defer os.RemoveAll(tmpdir) |
| pp := filepath.Join(tmpdir, "check") |
| |
| r, err := gzip.NewReader(bytes.NewReader([]byte(bin))) |
| if err != nil { |
| return err |
| } |
| defer r.Close() |
| |
| f, err := os.OpenFile(pp, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0700) |
| if err != nil { |
| return err |
| } |
| |
| if _, err := io.Copy(f, r); err != nil { |
| f.Close() |
| return err |
| } |
| f.Close() |
| |
| cmd := exec.Command("/check") |
| withChroot(cmd, tmpdir) |
| err = cmd.Run() |
| return err |
| } |
