Hi Roberto,
> +check_mmap() {
> + local hook="$1"
> + local arg="$2"
> + local test_file fowner rule result test_file_entry
> +
> + echo -e "\nTest: ${FUNCNAME[0]} (hook=\"$hook\", test_mmap arg: \"$arg\")"
> +
> + if ! test_file=$(mktemp -p "$PWD"); then
> + echo "${RED}Cannot write $test_file${NORM}"
> + return "$HARDFAIL"
> + fi
> +
> + fowner="$MMAP_CHECK_FOWNER"
> + rule="$MEASURE_MMAP_CHECK_RULE"
> +
> + if [ "$hook" = "MMAP_CHECK_REQPROT" ]; then
> + fowner="$MMAP_CHECK_REQPROT_FOWNER"
> + rule="$MEASURE_MMAP_CHECK_REQPROT_RULE"
> + fi
> +
> + if ! chown "$fowner" "$test_file"; then
> + echo "${RED}Cannot change owner of $test_file${NORM}"
> + return "$HARDFAIL"
> + fi
> +
> + check_load_ima_rule "$rule"
> + result=$?
> + if [ $result -ne "$OK" ]; then
> + return $result
> + fi
> +
> + test_mmap "$test_file" "$arg"
> +
> + if [ "$TFAIL" != "yes" ]; then
> + echo -n "Result (expect found): "
> + else
> + echo -n "Result (expect not found): "
> + fi
> +
> + test_file_entry=$(awk '$5 == "'"$test_file"'"' < /sys/kernel/security/ima/ascii_runtime_measurements)
> + if [ -z "$test_file_entry" ]; then
> + echo "not found"
> + return "$FAIL"
> + fi
Using temporary files should prevent having multiple records. Having a
verbose option to show the actual matching measurement list record
would be nice.
> +
> + echo "found"
> + return "$OK"
> +}
> +
> +
> +# Run in the new environment if TST_ENV is set.
> +_run_env "$TST_KERNEL" "$PWD/$(basename "$0")" "TST_ENV=$TST_ENV TST_KERNEL=$TST_KERNEL PATH=$PATH LD_LIBRARY_PATH=$LD_LIBRARY_PATH VERBOSE=$VERBOSE"
> +
> +# Exit from the creator of the new environment.
> +_exit_env "$TST_KERNEL"
> +
> +# Mount filesystems in the new environment.
> +_init_env
> +
> +if [ "$(whoami)" != "root" ]; then
> + echo "${CYAN}This script must be executed as root${NORM}"
> + exit "$SKIP"
> +fi
> +
> +if [ ! -f /sys/kernel/security/ima/policy ]; then
> + echo "${CYAN}IMA policy file not found${NORM}"
> + exit "$SKIP"
> +fi
> +
> +if ! cat /sys/kernel/security/ima/policy &> /dev/null; then
> + echo "${CYAN}IMA policy file is not readable${NORM}"
> + exit "$SKIP"
> +fi
An existing policy with an mmap rule would affect this test. Check to
see if one already exists.
> +
> +if [ -n "$TST_KEY_PATH" ]; then
> + if [ "${TST_KEY_PATH:0:1}" != "/" ]; then
> + echo "${RED}Absolute path required for the signing key${NORM}"
> + exit "$FAIL"
> + fi
>
--
thanks,
Mimi
