[PATCH] selftests: bpf: notification about privilege required to run test_kmod.sh testing script

[Jeffrin Jose T]

The test_kmod.sh script require root privilege for the successful
execution of the test.

This patch is to notify the user about the privilege the script
demands for the successful execution of the test.

Signed-off-by: Jeffrin Jose T (Rajagiri SET) <ahiliation@xxxxxxxxx>
---
 tools/testing/selftests/bpf/test_kmod.sh | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/tools/testing/selftests/bpf/test_kmod.sh b/tools/testing/selftests/bpf/test_kmod.sh
index 35669ccd4d23..378ccc512ad3 100755
--- a/tools/testing/selftests/bpf/test_kmod.sh
+++ b/tools/testing/selftests/bpf/test_kmod.sh
@@ -1,6 +1,15 @@
 #!/bin/sh
 # SPDX-License-Identifier: GPL-2.0
 
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
+msg="skip all tests:"
+if [ "$(id -u)" != "0" ]; then
+    echo $msg please run this as root >&2
+    exit $ksft_skip
+fi
+
 SRC_TREE=../../../../
 
 test_run()
-- 
2.17.0