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Subject[PATCH 21/24] selftests: memfd: return Kselftest Skip code for skipped tests
Date
When memfd test is skipped because of unmet dependencies and/or unsupported
configuration, it returns non-zero value which is treated as a fail by the
Kselftest framework. This leads to false negative result even when the test
could not be run.

Change it to return kselftest skip code when a test gets skipped to
clearly report that the test could not be run.

Added an explicit check for root user and return skip code.

Kselftest framework SKIP code is 4 and the framework prints appropriate
messages to indicate that the test is skipped.

Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
---
tools/testing/selftests/memfd/run_tests.sh | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/memfd/run_tests.sh b/tools/testing/selftests/memfd/run_tests.sh
index c2d41ed81b24..88dc206a69b7 100755
--- a/tools/testing/selftests/memfd/run_tests.sh
+++ b/tools/testing/selftests/memfd/run_tests.sh
@@ -1,6 +1,14 @@
#!/bin/bash
# please run as root

+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
+if [ $UID != 0 ]; then
+ echo "Please run this test as root"
+ exit $ksft_skip
+fi
+
#
# Normal tests requiring no special resources
#
@@ -33,7 +41,7 @@ if [ -n "$freepgs" ] && [ $freepgs -lt $hpages_test ]; then
echo $(( $hpages_needed + $nr_hugepgs )) > /proc/sys/vm/nr_hugepages
if [ $? -ne 0 ]; then
echo "Please run this test as root"
- exit 1
+ exit $ksft_skip
fi
while read name size unit; do
if [ "$name" = "HugePages_Free:" ]; then
--
2.14.1
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