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Fri, 13 Mar 2026 13:58:56 -0700 (PDT) From: Marcos Paulo de Souza Date: Fri, 13 Mar 2026 17:58:35 -0300 Subject: [PATCH 4/8] selftests: livepatch: functions: Introduce check_sysfs_exists Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260313-lp-tests-old-fixes-v1-4-71ac6dfb3253@suse.com> References: <20260313-lp-tests-old-fixes-v1-0-71ac6dfb3253@suse.com> In-Reply-To: <20260313-lp-tests-old-fixes-v1-0-71ac6dfb3253@suse.com> To: Josh Poimboeuf , Jiri Kosina , Miroslav Benes , Petr Mladek , Joe Lawrence , Shuah Khan Cc: live-patching@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Marcos Paulo de Souza X-Mailer: b4 0.15-dev X-Developer-Signature: v=1; a=ed25519-sha256; t=1773435515; l=1140; i=mpdesouza@suse.com; s=20231031; h=from:subject:message-id; bh=VRVN7RkiGrgm69aDuMpcOshBDCo1eHbzdD2OnFzwxC8=; b=j44w73MHAVUmex0H1jUYBDxUa2M7EmxhvQ7ovZCyWcxRTXhf661foGU7zlt8GToTphwQO3QH+ 9qbyHFqgc/mCDhnhbX2ucfZhx1+sGhqjDLZRV/6h3nOQKdO9mPtiBNM X-Developer-Key: i=mpdesouza@suse.com; a=ed25519; pk=/Ni/TsKkr69EOmdZXkp1Q/BlzDonbOBRsfPa18ySIwU= Return 0 if the livepatch sysfs attribute don't exists, and 1 otherwise. This new function will be used in the next patches. Signed-off-by: Marcos Paulo de Souza --- tools/testing/selftests/livepatch/functions.sh | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/tools/testing/selftests/livepatch/functions.sh b/tools/testing= /selftests/livepatch/functions.sh index 8ec0cb64ad94a..781346d6e94e0 100644 --- a/tools/testing/selftests/livepatch/functions.sh +++ b/tools/testing/selftests/livepatch/functions.sh @@ -339,6 +339,20 @@ function check_result { fi } =20 +# check_sysfs_exists(modname, attr) - check sysfs attribute existence +# modname - livepatch module creating the sysfs interface +# attr - attribute name to be checked +function check_sysfs_exists() { + local mod=3D"$1"; shift + local attr=3D"$1"; shift + + if [[ ! -f "$SYSFS_KLP_DIR/$mod/$attr" ]]; then + return 0 + fi + + return 1 +} + # check_sysfs_rights(modname, rel_path, expected_rights) - check sysfs # path permissions # modname - livepatch module creating the sysfs interface --=20 2.52.0