selftests: kmod: Add module address visibility test (a80d6055) · Commits · 戴 / test

tools/testing/selftests/kmod/kmod.sh

+36 −0

Original line number	Diff line number	Diff line
		@@ -63,6 +63,8 @@ ALL_TESTS="$ALL_TESTS 0008:150:1"
		ALL_TESTS="$ALL_TESTS 0009:150:1"
		ALL_TESTS="$ALL_TESTS 0010:1:1"
		ALL_TESTS="$ALL_TESTS 0011:1:1"
		ALL_TESTS="$ALL_TESTS 0012:1:1"
		ALL_TESTS="$ALL_TESTS 0013:1:1"

		# Kselftest framework requirement - SKIP code is 4.
		ksft_skip=4
		@@ -470,6 +472,38 @@ kmod_test_0011()
		echo "$MODPROBE" > /proc/sys/kernel/modprobe
		}

		kmod_check_visibility()
		{
		local name="$1"
		local cmd="$2"

		modprobe $DEFAULT_KMOD_DRIVER

		local priv=$(eval $cmd)
		local unpriv=$(capsh --drop=CAP_SYSLOG -- -c "$cmd")

		if [ "$priv" = "$unpriv" ] \|\| \
		[ "${priv:0:3}" = "0x0" ] \|\| \
		[ "${unpriv:0:3}" != "0x0" ] ; then
		echo "${FUNCNAME[0]}: FAIL, $name visible to unpriv: '$priv' vs '$unpriv'" >&2
		exit 1
		else
		echo "${FUNCNAME[0]}: OK!"
		fi
		}

		kmod_test_0012()
		{
		kmod_check_visibility /proc/modules \
		"grep '^${DEFAULT_KMOD_DRIVER}\b' /proc/modules \| awk '{print \$NF}'"
		}

		kmod_test_0013()
		{
		kmod_check_visibility '/sys/module//sections/' \
		"cat /sys/module/${DEFAULT_KMOD_DRIVER}/sections/.*text \| head -n1"
		}

		list_tests()
		{
		echo "Test ID list:"
		@@ -489,6 +523,8 @@ list_tests()
		echo "0009 x $(get_test_count 0009) - multithreaded - push kmod_concurrent over max_modprobes for get_fs_type()"
		echo "0010 x $(get_test_count 0010) - test nonexistent modprobe path"
		echo "0011 x $(get_test_count 0011) - test completely disabling module autoloading"
		echo "0012 x $(get_test_count 0012) - test /proc/modules address visibility under CAP_SYSLOG"
		echo "0013 x $(get_test_count 0013) - test /sys/module//sections/ visibility under CAP_SYSLOG"
		}

		usage()

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