[PATCH nft v4 12/17] tests/shell: move taint check to "test-wrapper.sh"

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We will run tests in parallel. That means, we have multiple tests data and results
in fly. That becomes simpler, if we move more result data to the
test-wrapper and out of "run-tests.sh".

Signed-off-by: Thomas Haller <thaller@xxxxxxxxxx>
---
 tests/shell/helpers/test-wrapper.sh | 18 +++++++++++++++---
 tests/shell/run-tests.sh            | 16 ++++------------
 2 files changed, 19 insertions(+), 15 deletions(-)

diff --git a/tests/shell/helpers/test-wrapper.sh b/tests/shell/helpers/test-wrapper.sh
index bdbe2c370c6b..1390985c7f32 100755
--- a/tests/shell/helpers/test-wrapper.sh
+++ b/tests/shell/helpers/test-wrapper.sh
@@ -11,11 +11,15 @@ TESTDIR="$(dirname "$TEST")"
 
 printf '%s\n' "$TEST" > "$NFT_TEST_TESTTMPDIR/name"
 
+read tainted_before < /proc/sys/kernel/tainted
+
 rc_test=0
 "$TEST" &> "$NFT_TEST_TESTTMPDIR/testout.log" || rc_test=$?
 
 $NFT list ruleset > "$NFT_TEST_TESTTMPDIR/ruleset-after"
 
+read tainted_after < /proc/sys/kernel/tainted
+
 DUMPPATH="$TESTDIR/dumps"
 DUMPFILE="$DUMPPATH/$TESTBASE.nft"
 
@@ -45,6 +49,10 @@ if [ "$rc_test" -ne 77 -a -f "$DUMPFILE" ] ; then
 	fi
 fi
 
+if [ "$tainted_before" != "$tainted_after" ]; then
+	echo "$tainted_after" > "$NFT_TEST_TESTTMPDIR/rc-failed-tainted"
+fi
+
 rc_exit="$rc_test"
 if [ -n "$rc_dump" ] && [ "$rc_dump" -ne 0 ] ; then
 	echo "$DUMPFILE" > "$NFT_TEST_TESTTMPDIR/rc-failed-dump"
@@ -53,13 +61,17 @@ if [ -n "$rc_dump" ] && [ "$rc_dump" -ne 0 ] ; then
 		# Special exit code to indicate dump diff.
 		rc_exit=124
 	fi
-elif [ "$rc_test" -eq 0 ] ; then
-	echo "$rc_test" > "$NFT_TEST_TESTTMPDIR/rc-ok"
 elif [ "$rc_test" -eq 77 ] ; then
 	echo "$rc_test" > "$NFT_TEST_TESTTMPDIR/rc-skipped"
+elif [ "$rc_test" -eq 0 -a "$tainted_before" = "$tainted_after" ] ; then
+	echo "$rc_test" > "$NFT_TEST_TESTTMPDIR/rc-ok"
 else
 	echo "$rc_test" > "$NFT_TEST_TESTTMPDIR/rc-failed"
-	if [ "$rc_test" -eq 124 ] ; then
+	if [ "$rc_test" -eq 0 -a "$tainted_before" != "$tainted_after" ] ; then
+		# Special exit code to indicate tainted.
+		rc_exit=123
+	elif [ "$rc_test" -eq 124 -o "$rc_test" -eq 123 ] ; then
+		# These exit codes are reserved
 		rc_exit=125
 	fi
 fi
diff --git a/tests/shell/run-tests.sh b/tests/shell/run-tests.sh
index f88e244f9625..d9ec22f11830 100755
--- a/tests/shell/run-tests.sh
+++ b/tests/shell/run-tests.sh
@@ -356,15 +356,6 @@ echo ""
 ok=0
 skipped=0
 failed=0
-taint=0
-
-check_taint()
-{
-	read taint_now < /proc/sys/kernel/tainted
-	if [ $taint -ne $taint_now ] ; then
-		msg_warn "[FAILED]	kernel is tainted: $taint  -> $taint_now"
-	fi
-}
 
 kmem_runs=0
 kmemleak_found=0
@@ -406,7 +397,10 @@ check_kmemleak()
 	fi
 }
 
-check_taint
+read kernel_tainted < /proc/sys/kernel/tainted
+if [ "$kernel_tainted" -ne 0 ] ; then
+	msg_warn "[FAILED]	kernel is tainted"
+fi
 
 print_test_header() {
 	local msglevel="$1"
@@ -471,7 +465,6 @@ print_test_result() {
 
 TESTIDX=0
 for testfile in "${TESTS[@]}" ; do
-	read taint < /proc/sys/kernel/tainted
 	kernel_cleanup
 
 	((TESTIDX++))
@@ -489,7 +482,6 @@ for testfile in "${TESTS[@]}" ; do
 
 	print_test_result "$NFT_TEST_TESTTMPDIR" "$testfile" "$rc_got"
 
-	check_taint
 	check_kmemleak
 done
 
-- 
2.41.0




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