func getBinaryArch()

in cmd/seccomp-profiler/main.go [166:201]

32 lines of code
9 McCabe index (conditional complexity)


func getBinaryArch(binary string) (*arch.Info, string, error) {
	f, err := os.Open(binary)
	if err != nil {
		return nil, "", err
	}
	defer f.Close()

	bin, err := elf.NewFile(f)
	if err != nil {
		return nil, "", err
	}

	if section := bin.Section(".note.go.buildid"); section == nil {
		return nil, "", fmt.Errorf("%v is not a Go binary", binary)
	}

	libs, err := bin.DynString(elf.DT_NEEDED)
	if err != nil {
		return nil, "", err
	}
	if len(libs) > 0 {
		log.Println("Binary is dynamically linked with", strings.Join(libs, ", "))
		log.Println("WARN: The profiler cannot detect syscalls used in linked libraries.")
	}

	switch bin.Machine {
	case elf.EM_386:
		return arch.I386, "386", nil
	case elf.EM_ARM:
		return arch.ARM, "arm", nil
	case elf.EM_X86_64:
		return arch.X86_64, "amd64", nil
	default:
		return nil, "", fmt.Errorf("%v architecture is not supported by go-seccomp-bpf", bin.Machine)
	}
}