selftests: netconsole: Add tests for 'release' feature in sysdata

Expands the self-tests to include the 'release' feature in
sysdata.

Verifies that enabling the 'release' feature appends the
correct data and ensures that disabling it functions as expected.

When enabled, the message should have an item similar to in the
userdata: `release=$(uname -r)`

Signed-off-by: Breno Leitao <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Paolo Abeni <[email protected]>

Author: leitao

tools/testing/selftests/drivers/net/netcons_sysdata.sh

@@ -42,6 +42,17 @@ function set_taskname() {
 	echo 1 > "${NETCONS_PATH}/userdata/taskname_enabled"
 }
 
+# Enable the release to be appended to sysdata
+function set_release() {
+	if [[ ! -f "${NETCONS_PATH}/userdata/release_enabled" ]]
+	then
+		echo "Not able to enable release sysdata append. Configfs not available in ${NETCONS_PATH}/userdata/release_enabled" >&2
+		exit "${ksft_skip}"
+	fi
+
+	echo 1 > "${NETCONS_PATH}/userdata/release_enabled"
+}
+
 # Disable the sysdata cpu_nr feature
 function unset_cpu_nr() {
 	echo 0 > "${NETCONS_PATH}/userdata/cpu_nr_enabled"
@@ -52,6 +63,10 @@ function unset_taskname() {
 	echo 0 > "${NETCONS_PATH}/userdata/taskname_enabled"
 }
 
+function unset_release() {
+	echo 0 > "${NETCONS_PATH}/userdata/release_enabled"
+}
+
 # Test if MSG contains sysdata
 function validate_sysdata() {
 	# OUTPUT_FILE will contain something like:
@@ -93,6 +108,21 @@ function validate_sysdata() {
 	pkill_socat
 }
 
+function validate_release() {
+	RELEASE=$(uname -r)
+
+	if [ ! -f "$OUTPUT_FILE" ]; then
+		echo "FAIL: File was not generated." >&2
+		exit "${ksft_fail}"
+	fi
+
+	if ! grep -q "release=${RELEASE}" "${OUTPUT_FILE}"; then
+		echo "FAIL: 'release=${RELEASE}' not found in ${OUTPUT_FILE}" >&2
+		cat "${OUTPUT_FILE}" >&2
+		exit "${ksft_fail}"
+	fi
+}
+
 # Test if MSG content exists in OUTPUT_FILE but no `cpu=` and `taskname=`
 # strings
 function validate_no_sysdata() {
@@ -119,6 +149,12 @@ function validate_no_sysdata() {
 		exit "${ksft_fail}"
 	fi
 
+	if grep -q "release=" "${OUTPUT_FILE}"; then
+		echo "FAIL: 'release=  found in ${OUTPUT_FILE}" >&2
+		cat "${OUTPUT_FILE}" >&2
+		exit "${ksft_fail}"
+	fi
+
 	rm "${OUTPUT_FILE}"
 }
 
@@ -169,9 +205,11 @@ MSG="Test #1 from CPU${CPU}"
 set_cpu_nr
 # Enable taskname to be appended to sysdata
 set_taskname
+set_release
 runtest
 # Make sure the message was received in the dst part
 # and exit
+validate_release
 validate_sysdata
 
 #====================================================
@@ -184,19 +222,19 @@ OUTPUT_FILE="/tmp/${TARGET}_2"
 MSG="Test #2 from CPU${CPU}"
 set_user_data
 runtest
+validate_release
 validate_sysdata
 
 # ===================================================
 # TEST #3
-# Unset cpu_nr, so, no CPU should be appended.
-# userdata is still set
+# Unset all sysdata, fail if any userdata is set
 # ===================================================
 CPU=$((RANDOM % $(nproc)))
 OUTPUT_FILE="/tmp/${TARGET}_3"
 MSG="Test #3 from CPU${CPU}"
-# Enable the auto population of cpu_nr
 unset_cpu_nr
 unset_taskname
+unset_release
 runtest
 # At this time, cpu= shouldn't be present in the msg
 validate_no_sysdata