}

	// Mimicking exec.findExecutable here.
	// ENOSYS means Eaccess is not available or not implemented.
	// EPERM can be returned by Linux containers employing seccomp.
	// In both cases, fall back to checking the permission bits.
	err := unix.Eaccess(filepath.Join(dir, de.Name()), unix.X_OK)
	if (err == syscall.ENOSYS || err == syscall.EPERM) && info.Mode()&0111 != 0 {
		err = nil
	}
	if err != nil {
		return "", false
	}

			// See issue #42334.
			//
			// If the file is on NFS, we can see EOPNOTSUPP.
			// See issue #40731.
			//
			// If the process is running inside a Docker container,
			// we might see EPERM instead of ENOSYS. See issue
			// #40893. Since EPERM might also be a legitimate error,
			// don't mark copy_file_range(2) as unsupported.
			return 0, false, nil
		case nil:
			if n == 0 {
				// If we did not read any bytes at all,

	if err != nil {
		return nil, err
	}
	defer syscall.CertFreeCertificateChain(topCtx)

	chain, topErr := verifyChain(c, topCtx, opts)
	if topErr == nil {
		chains = append(chains, chain)
	}

	if lqCtxCount := topCtx.LowerQualityChainCount; lqCtxCount > 0 {
		lqCtxs := unsafe.Slice(topCtx.LowerQualityChains, lqCtxCount)

	VLM     0(R3), V1, V4    // 64-bytes into V1..V4

	// Reflect the data if the CRC operation is in the bit-reflected domain
	VPERM   V1, V1, CONST_PERM_LE2BE, V1
	VPERM   V2, V2, CONST_PERM_LE2BE, V2
	VPERM   V3, V3, CONST_PERM_LE2BE, V3
	VPERM   V4, V4, CONST_PERM_LE2BE, V4

	VX      V0, V1, V1     // V1 ^= CRC
	ADD     $64, R3        // BUF = BUF + 64
	ADD     $(-64), R4

		return syscall.EISDIR
	}
	err = unix.Eaccess(file, unix.X_OK)
	// ENOSYS means Eaccess is not available or not implemented.
	// EPERM can be returned by Linux containers employing seccomp.
	// In both cases, fall back to checking the permission bits.
	if err == nil || (err != syscall.ENOSYS && err != syscall.EPERM) {
		return err
	}
	if m&0111 != 0 {
		return nil
	}
	return fs.ErrPermission
}

	var errno syscall.Errno
	if errors.As(err, &errno) {
		switch errno {
		case syscall.EPERM, syscall.EROFS:
			// User lacks permission: either the call requires root permission and the
			// user is not root, or the call is denied by a container security policy.
			return true
		case syscall.EINVAL:
			// Some containers return EINVAL instead of EPERM if a system call is
			// denied by security policy.
			return true
		}
	}

	EMFILE       = syscall.NewError("no free file descriptors")
	EIO          = syscall.NewError("i/o error")
	ENAMETOOLONG = syscall.NewError("file name too long")
	EINTR        = syscall.NewError("interrupted")
	EPERM        = syscall.NewError("permission denied")
	EBUSY        = syscall.NewError("no free devices")
	ETIMEDOUT    = syscall.NewError("connection timed out")
	EPLAN9       = syscall.NewError("not supported by plan 9")

	EEXIST       = NewError("file already exists")
	EMFILE       = NewError("no free file descriptors")
	EIO          = NewError("i/o error")
	ENAMETOOLONG = NewError("file name too long")
	EINTR        = NewError("interrupted")
	EPERM        = NewError("permission denied")
	EBUSY        = NewError("no free devices")
	ETIMEDOUT    = NewError("connection timed out")
	EPLAN9       = NewError("not supported by plan 9")

		// Some file systems do not support fallocate. We ignore that error as linking
		// can still take place, but you might SIGBUS when you write to the mmapped
		// area.
		if err != syscall.ENOTSUP && err != syscall.EPERM && err != errNoFallocate {
			return err
		}
	}
	err = out.f.Truncate(int64(filesize))
	if err != nil {
		Exitf("resize output file failed: %v", err)
	}

    }

    public void test_getUserAgentType_Opera() {
        getMockRequest().addHeader("user-agent", "Opera/9.80 (X11; U; Linux x86_64) Presto/2.9.181 Version/12.00");
        assertEquals(UserAgentType.OPERA, userAgentHelper.getUserAgentType());
    }

    public void test_getUserAgentType_OTHER() {
        getMockRequest().addHeader("user-agent", "Dummy");