selftests: Add plan line and fix result line syntax

The TAP version 13 spec requires a "plan" line, which has been missing.
Since we always know how many tests we're going to run, emit the count on
the plan line. This also fixes the result lines to remove the "1.." prefix
which is against spec, and to mark skips with the correct "# SKIP" suffix.
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

tools/testing/selftests/kselftest.h

@@ -111,7 +111,7 @@ static inline void ksft_test_result_skip(const char *msg, ...)
 	ksft_cnt.ksft_xskip++;
 
 	va_start(args, msg);
-	printf("ok %d # skip ", ksft_test_num());
+	printf("not ok %d # SKIP ", ksft_test_num());
 	vprintf(msg, args);
 	va_end(args);
 }
@@ -172,7 +172,7 @@ static inline int ksft_exit_skip(const char *msg, ...)
 		va_list args;
 
 		va_start(args, msg);
-		printf("1..%d # Skipped: ", ksft_test_num());
+		printf("not ok %d # SKIP ", ksft_test_num());
 		vprintf(msg, args);
 		va_end(args);
 	} else {

tools/testing/selftests/kselftest/runner.sh

@@ -20,15 +20,15 @@ run_one()
 	echo "========================================"
 	if [ ! -x "$TEST" ]; then
 		echo "$TEST_HDR_MSG: Warning: file $TEST is not executable, correct this."
-		echo "not ok 1..$test_num $TEST_HDR_MSG [FAIL]"
+		echo "not ok $test_num $TEST_HDR_MSG"
 	else
 		cd `dirname $TEST` > /dev/null
 		(./$BASENAME_TEST >> "$logfile" 2>&1 &&
-		echo "ok 1..$test_num $TEST_HDR_MSG [PASS]") ||
+		echo "ok $test_num $TEST_HDR_MSG") ||
 		(if [ $? -eq $skip_rc ]; then	\
-			echo "not ok 1..$test_num $TEST_HDR_MSG [SKIP]"
+			echo "not ok $test_num $TEST_HDR_MSG # SKIP"
 		else
-			echo "not ok 1..$test_num $TEST_HDR_MSG [FAIL]"
+			echo "not ok $test_num $TEST_HDR_MSG"
 		fi)
 		cd - >/dev/null
 	fi
@@ -39,6 +39,8 @@ run_many()
 	echo "TAP version 13"
 	DIR=$(basename "$PWD")
 	test_num=0
+	total=$(echo "$@" | wc -w)
+	echo "1..$total"
 	for TEST in "$@"; do
 		BASENAME_TEST=$(basename $TEST)
 		test_num=$(( test_num + 1 ))