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Wed, 29 Apr 2026 07:35:41 -0700 (PDT) Received: from [127.0.0.1] ([2804:1bc4:224:7800:585c:db3a:fcb:e21f]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48a7c305371sm19982835e9.18.2026.04.29.07.35.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Apr 2026 07:35:40 -0700 (PDT) From: Marcos Paulo de Souza Date: Wed, 29 Apr 2026 11:35:17 -0300 Subject: [PATCH v4 3/6] selftests: livepatch: Introduce does_sysfs_exist function Precedence: bulk X-Mailing-List: live-patching@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260429-lp-tests-old-fixes-v4-3-59b9741989d0@suse.com> References: <20260429-lp-tests-old-fixes-v4-0-59b9741989d0@suse.com> In-Reply-To: <20260429-lp-tests-old-fixes-v4-0-59b9741989d0@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=1777473323; l=1087; i=mpdesouza@suse.com; s=20231031; h=from:subject:message-id; bh=zwVAcfIrB5gkKSQrtegRJbhzNles6rOGTmiKmx6GRWQ=; b=6wWstIwsc0qnLAxt9thWDch+TeV2MafYkCbFIql9U3Atbpp3vyOuKXGLAVKZLYJ7ppJojNUaX Rl+RiIa5DVkDqX/sdk3SCaS0OUFtNVfdjfZb97YnAgqVsn1B/gM2ejH X-Developer-Key: i=mpdesouza@suse.com; a=ed25519; pk=/Ni/TsKkr69EOmdZXkp1Q/BlzDonbOBRsfPa18ySIwU= Returns true if the livepatch sysfs attribute exists, and false otherwise. This new function will be used in the next patches. Signed-off-by: Marcos Paulo de Souza --- tools/testing/selftests/livepatch/functions.sh | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/tools/testing/selftests/livepatch/functions.sh b/tools/testing/selftests/livepatch/functions.sh index 8ec0cb64ad94..2bc50271729c 100644 --- a/tools/testing/selftests/livepatch/functions.sh +++ b/tools/testing/selftests/livepatch/functions.sh @@ -339,6 +339,16 @@ function check_result { fi } +# does_sysfs_exist(modname, attr) - check sysfs attribute existence +# modname - livepatch module creating the sysfs interface +# attr - attribute name to be checked +function does_sysfs_exist() { + local mod="$1"; shift + local attr="$1"; shift + + [[ -f "$SYSFS_KLP_DIR/$mod/$attr" ]] +} + # check_sysfs_rights(modname, rel_path, expected_rights) - check sysfs # path permissions # modname - livepatch module creating the sysfs interface -- 2.54.0