Re: [PATCH] Kernel selftests: Add check if tpm devices are supported

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On Tue, May 19, 2020 at 12:39:34AM +0300, Nikita Sobolev wrote:
> tpm2 tests set uses /dev/tpm0 and /dev/tpmrm0 without check if they
> are available. In case, when these devices are not available test
> fails, but expected behaviour is test to be skipped.
> 
> Signed-off-by: Nikita Sobolev <Nikita.Sobolev@xxxxxxxxxxxx>

tpm2 tests set -> TPM2 test suite

Fixes tag is also required.

There is nothing cool writing acronyms in lower case, so lets
just always write them correctly.

> ---
>  tools/testing/selftests/tpm2/test_smoke.sh | 11 +++++++++--
>  tools/testing/selftests/tpm2/test_space.sh |  9 ++++++++-
>  2 files changed, 17 insertions(+), 3 deletions(-)
> 
> diff --git a/tools/testing/selftests/tpm2/test_smoke.sh b/tools/testing/selftests/tpm2/test_smoke.sh
> index 8155c2ea7ccb..e55d3e400666 100755
> --- a/tools/testing/selftests/tpm2/test_smoke.sh
> +++ b/tools/testing/selftests/tpm2/test_smoke.sh
> @@ -1,8 +1,15 @@
>  #!/bin/bash
>  # SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
>  
> -python -m unittest -v tpm2_tests.SmokeTest
> -python -m unittest -v tpm2_tests.AsyncTest
> +# Kselftest framework requirement - SKIP code is 4.
> +ksft_skip=4
> +
> +if [ -f /dev/tpm0 ] ; then
> +	python -m unittest -v tpm2_tests.SmokeTest
> +	python -m unittest -v tpm2_tests.AsyncTest
> +else
> +	exit $ksft_skip
> +fi
>  
>  CLEAR_CMD=$(which tpm2_clear)
>  if [ -n $CLEAR_CMD ]; then
> diff --git a/tools/testing/selftests/tpm2/test_space.sh b/tools/testing/selftests/tpm2/test_space.sh
> index a6f5e346635e..180b469c53b4 100755
> --- a/tools/testing/selftests/tpm2/test_space.sh
> +++ b/tools/testing/selftests/tpm2/test_space.sh
> @@ -1,4 +1,11 @@
>  #!/bin/bash
>  # SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
>  
> -python -m unittest -v tpm2_tests.SpaceTest
> +# Kselftest framework requirement - SKIP code is 4.
> +ksft_skip=4
> +
> +if [ -f /dev/tpmrm0 ] ; then
> +	python -m unittest -v tpm2_tests.SpaceTest
> +else
> +	exit $ksft_skip
> +fi
> -- 
> 2.16.2
> 

This would make the change more compact:

# Kselftest framework requirement - SKIP code is 4.
if [ ! -f /dev/tpmrm0 ] ; then
	exit 4
fi

python -m unittest -v tpm2_tests.SpaceTest

(also for /dev/tpm0)

/Jarkko



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