[LTP] [PATCH v2] syscalls/keyctl09: test encrypted keys.

[Eric Biggers]

On Mon, Dec 20, 2021 at 09:37:21PM -0500, Yael Tiomkin wrote:
> diff --git a/testcases/kernel/syscalls/keyctl/keyctl09.c b/testcases/kernel/syscalls/keyctl/keyctl09.c
> new file mode 100644
> index 000000000..507cd5628
> --- /dev/null
> +++ b/testcases/kernel/syscalls/keyctl/keyctl09.c
> @@ -0,0 +1,58 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
> +/*
> + * Copyright (c) 2021 Google, Inc.
> + */
> +
> +/*\
> + * [Description]
> + * Test that encrypted keys can be instantiated using user-provided decrypted
> + * data (plaintext), and separately, using kernel-generated key material.
> + */
> +

This test doesn't seem to work as intended.

First, it fails if CONFIG_ENCRYPTED_KEYS is unset (it should be skipped):

	keyctl09.c:33: TFAIL: Failed to instantiate encrypted key using payload decrypted data

Second, I don't have your patch "Instantiate key with user-provided decrypted
data" (https://lore.kernel.org/r/20211213192030.125091-1-yaelt@google.com) in my
kernel, so instantiating a key using "user-provided decrypted data" is not
implemented by the kernel.  However, the test still passes regardless:

	keyctl09.c:49: TPASS: Encrypted keys were successfully instantiated and read    

The test should detect when "user-provided decrypted data" is not supported by
the kernel, and report that the test of that is being skipped in that case.

- Eric