1 files changed, 86 insertions, 0 deletions
diff --git a/tools/testing/selftests/kselftest/runner.sh b/tools/testing/selftests/kselftest/runner.sh
new file mode 100644
index 000000000000..eff3ee303d0d
--- /dev/null
+++ b/tools/testing/selftests/kselftest/runner.sh
@@ -0,0 +1,86 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+#
+# Runs a set of tests in a given subdirectory.
+export skip_rc=4
+export logfile=/dev/stdout
+export per_test_logging=
+
+# There isn't a shell-agnostic way to find the path of a sourced file,
+# so we must rely on BASE_DIR being set to find other tools.
+if [ -z "$BASE_DIR" ]; then
+	echo "Error: BASE_DIR must be set before sourcing." >&2
+	exit 1
+fi
+
+# If Perl is unavailable, we must fall back to line-at-a-time prefixing
+# with sed instead of unbuffered output.
+tap_prefix()
+{
+	if [ ! -x /usr/bin/perl ]; then
+		sed -e 's/^/# /'
+	else
+		"$BASE_DIR"/kselftest/prefix.pl
+	fi
+}
+
+# If stdbuf is unavailable, we must fall back to line-at-a-time piping.
+tap_unbuffer()
+{
+	if ! which stdbuf >/dev/null ; then
+		"$@"
+	else
+		stdbuf -i0 -o0 -e0 "$@"
+	fi
+}
+
+run_one()
+{
+	DIR="$1"
+	TEST="$2"
+	NUM="$3"
+
+	BASENAME_TEST=$(basename $TEST)
+
+	TEST_HDR_MSG="selftests: $DIR: $BASENAME_TEST"
+	echo "# $TEST_HDR_MSG"
+	if [ ! -x "$TEST" ]; then
+		echo -n "# Warning: file $TEST is "
+		if [ ! -e "$TEST" ]; then
+			echo "missing!"
+		else
+			echo "not executable, correct this."
+		fi
+		echo "not ok $test_num $TEST_HDR_MSG"
+	else
+		cd `dirname $TEST` > /dev/null
+		(((((tap_unbuffer ./$BASENAME_TEST 2>&1; echo $? >&3) |
+			tap_prefix >&4) 3>&1) |
+			(read xs; exit $xs)) 4>>"$logfile" &&
+		echo "ok $test_num $TEST_HDR_MSG") ||
+		(if [ $? -eq $skip_rc ]; then	\
+			echo "not ok $test_num $TEST_HDR_MSG # SKIP"
+		else
+			echo "not ok $test_num $TEST_HDR_MSG"
+		fi)
+		cd - >/dev/null
+	fi
+}
+
+run_many()
+{
+	echo "TAP version 13"
+	DIR=$(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 ))
+		if [ -n "$per_test_logging" ]; then
+			logfile="/tmp/$BASENAME_TEST"
+			cat /dev/null > "$logfile"
+		fi
+		run_one "$DIR" "$TEST" "$test_num"
+	done
+}