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uname -a: Linux apirnd 5.4.0-204-generic #224-Ubuntu SMP Thu Dec 5 13:38:28 UTC 2024 x86_64 

uid=33(www-data) gid=33(www-data) groups=33(www-data) 

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/usr/src/linux-headers-5.4.0-204/tools/testing/selftests/mount/   drwxr-xr-x
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Viewing file:     run_tests.sh (285 B)      -rwxr-xr-x

#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# Kselftest framework requirement - SKIP code is 4.
ksft_skip=4

# Run mount selftests
if [ -f /proc/self/uid_map ] ; then
	./unprivileged-remount-test ;
else
	echo "WARN: No /proc/self/uid_map exist, test skipped." ;
	exit $ksft_skip
fi