if _, err := io.ReadFull(f, magbuf[:]); err != nil {
		Exitf("file %s too short", name)
	}

	if string(magbuf[:]) != ARMAG {
		Exitf("%s is not an archive file", name)
	}

	var arhdr ArHdr
	l := nextar(f, f.Offset(), &arhdr)
	if l <= 0 {
		Exitf("%s missing armap", name)
	}

	var armap archiveMap
	if arhdr.name == "/" || arhdr.name == "/SYM64/" {
		armap = readArmap(name, f, arhdr)
	} else {

		j = len(name)
	}
	hash := notsha256.Sum256([]byte(name[i+1 : j]))
	return name[:i+1] + base64.StdEncoding.EncodeToString(hash[:6]) + name[j:]
}

/*
 * look for the next file in an archive.
 * adapted from libmach.
 */
func nextar(bp *bio.Reader, off int64, a *ArHdr) int64 {
	if off&1 != 0 {
		off++
	}
	bp.MustSeek(off, 0)
	var buf [SAR_HDR]byte
	if n, err := io.ReadFull(bp, buf[:]); err != nil {

    }

    ExcludeSpec nextAny() {
        FACTORY.anyOf((0..(1 + random.nextInt(3))).collect { next() } as Set<ExcludeSpec>)
    }

    ExcludeSpec nextAll() {
        FACTORY.allOf((0..(1 + random.nextInt(3))).collect { next() } as Set<ExcludeSpec>)
    }

    ExcludeSpec nextArtifact() {

        CodeBlock nextArg = CodeBlock.of("nextArg");
        result.addStatement("Object $L = invocation.getArgument(argIndex)", nextArg);
        result.beginControlFlow("if ($1L == null || $1L instanceof $2T)", nextArg, entryParamType);
        if (entryParamType.equals(TypeName.OBJECT)) {
            result.addStatement("$1L[argIndex - $2L] = $3L", varargVariable, paramIndex, nextArg);
        } else {

        CodeBlock nextArg = CodeBlock.of("nextArg");
        result.addStatement("Class<?> $L = argumentClasses[argIndex]", nextArg);
        result.beginControlFlow("if ($2L != null && !$1T.class.isAssignableFrom($2L))", entryParamType, nextArg);
        result.addStatement("$L = false", varargMatched);
        result.addStatement("break");

NextVar:
	for _, inkv := range in {
		k := strings.SplitAfterN(inkv, "=", 2)[0]
		for i, outkv := range out {
			if strings.HasPrefix(outkv, k) {
				out[i] = inkv
				continue NextVar
			}
		}
		out = append(out, inkv)
	}
	return out
}

const (
	IPv4len = 4
	IPv6len = 16

		pipe = nextfd
		nextfd++
	}
	for i = 0; i < len(fd); i++ {
		if fd[i] >= 0 && fd[i] < i {
			if nextfd == pipe { // don't stomp on pipe
				nextfd++
			}
			switch runtime.GOOS {
			case "illumos", "solaris":
				_, err1 = fcntl1(uintptr(fd[i]), _F_DUP2FD_CLOEXEC, uintptr(nextfd))
			default:
				_, err1 = dup2child(uintptr(fd[i]), uintptr(nextfd))
				if err1 != 0 {
					goto childerror
				}

		}
		pipe = nextfd
		nextfd++
	}
	for i = 0; i < len(fd); i++ {
		if fd[i] >= 0 && fd[i] < i {
			if nextfd == pipe { // don't stomp on pipe
				nextfd++
			}
			if runtime.GOOS == "openbsd" {
				_, _, err1 = rawSyscall(dupTrampoline, uintptr(fd[i]), uintptr(nextfd), O_CLOEXEC)
			} else {
				_, _, err1 = rawSyscall(dupTrampoline, uintptr(fd[i]), uintptr(nextfd), 0)
				if err1 != 0 {

type ControllerClient struct {
	nextCapabilities []*csipb.ControllerServiceCapability
	nextErr          error
}

// SetNextError injects next expected error
func (f *ControllerClient) SetNextError(err error) {
	f.nextErr = err
}

// SetNextCapabilities injects next expected capabilities
func (f *ControllerClient) SetNextCapabilities(caps []*csipb.ControllerServiceCapability) {

	// so that pass 2 won't stomp on an fd it needs later.
	if pipe < nextfd {
		r1, _, _ = RawSyscall(SYS_DUP, uintptr(pipe), uintptr(nextfd), 0)
		if int32(r1) == -1 {
			goto childerror
		}
		pipe = nextfd
		nextfd++
	}
	for i = 0; i < len(fd); i++ {
		if fd[i] >= 0 && fd[i] < i {
			if nextfd == pipe { // don't stomp on pipe
				nextfd++
			}