48 lines · bash
1#!/bin/sh2# SPDX-License-Identifier: GPL-2.03#4# Prevent loading a kernel image via the kexec_load syscall when5# signatures are required. (Dependent on CONFIG_IMA_ARCH_POLICY.)6 7TEST="$0"8. ./kexec_common_lib.sh9 10# kexec requires root privileges11require_root_privileges12 13# get the kernel config14get_kconfig15 16kconfig_enabled "CONFIG_KEXEC=y" "kexec_load is enabled"17if [ $? -eq 0 ]; then18 log_skip "kexec_load is not enabled"19fi20 21kconfig_enabled "CONFIG_IMA_APPRAISE=y" "IMA enabled"22ima_appraise=$?23 24kconfig_enabled "CONFIG_IMA_ARCH_POLICY=y" \25 "IMA architecture specific policy enabled"26arch_policy=$?27 28get_secureboot_mode29secureboot=$?30 31# kexec_load should fail in secure boot mode and CONFIG_IMA_ARCH_POLICY enabled32kexec --load $KERNEL_IMAGE > /dev/null 2>&133if [ $? -eq 0 ]; then34 kexec --unload35 if [ $secureboot -eq 1 ] && [ $arch_policy -eq 1 ]; then36 log_fail "kexec_load succeeded"37 elif [ $ima_appraise -eq 0 -o $arch_policy -eq 0 ]; then38 log_info "Either IMA or the IMA arch policy is not enabled"39 fi40 log_pass "kexec_load succeeded"41else42 if [ $secureboot -eq 1 ] && [ $arch_policy -eq 1 ] ; then43 log_pass "kexec_load failed"44 else45 log_fail "kexec_load failed"46 fi47fi48