Hi Gautam,
On Sun, 26 Jun 2022 01:22:45 +0530 Gautam <gautammenghani201@xxxxxxxxx> wrote:
> The kernel is in lockdown mode when secureboot is enabled and hence
> debugfs cannot be used. Add support for this and other general cases
> where debugfs cannot be read and communicate the same to the user before
> running tests.
>
> Signed-off-by: Gautam <gautammenghani201@xxxxxxxxx>
Reviewed-by: SeongJae Park <sj@xxxxxxxxxx>
Thanks,
SJ
> ---
> Changes in v2:
> 1. Modify the error message to account for general cases.
> 2. Change the return code so that the test is skipped.
>
> Changes in v3:
> 1. Change the name of variable holding the error message.
>
> Changes in v4:
> 1. Correct the mode of the source file.
>
> tools/testing/selftests/damon/_chk_dependency.sh | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/tools/testing/selftests/damon/_chk_dependency.sh b/tools/testing/selftests/damon/_chk_dependency.sh
> index 0189db81550b..0328ac0b5a5e 100644
> --- a/tools/testing/selftests/damon/_chk_dependency.sh
> +++ b/tools/testing/selftests/damon/_chk_dependency.sh
> @@ -26,3 +26,13 @@ do
> exit 1
> fi
> done
> +
> +permission_error="Operation not permitted"
> +for f in attrs target_ids monitor_on
> +do
> + status=$( cat "$DBGFS/$f" 2>&1 )
> + if [ "${status#*$permission_error}" != "$status" ]; then
> + echo "Permission for reading $DBGFS/$f denied; maybe secureboot enabled?"
> + exit $ksft_skip
> + fi
> +done
> --
> 2.36.1
