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#!/bin/sh # SPDX-License-Identifier: GPL-2.0 # # Prevent loading a kernel image via the kexec_load syscall when # signatures are required. (Dependent on CONFIG_IMA_ARCH_POLICY.) TEST="$0" . ./kexec_common_lib.sh # kexec requires root privileges require_root_privileges # get the kernel config get_kconfig kconfig_enabled "CONFIG_KEXEC=y" "kexec_load is enabled" if [ $? -eq 0 ]; then log_skip "kexec_load is not enabled" fi kconfig_enabled "CONFIG_IMA_APPRAISE=y" "IMA enabled" ima_appraise=$? kconfig_enabled "CONFIG_IMA_ARCH_POLICY=y" \ "IMA architecture specific policy enabled" arch_policy=$? get_secureboot_mode secureboot=$? # kexec_load should fail in secure boot mode and CONFIG_IMA_ARCH_POLICY enabled kexec --load $KERNEL_IMAGE > /dev/null 2>&1 if [ $? -eq 0 ]; then kexec --unload if [ $secureboot -eq 1 ] && [ $arch_policy -eq 1 ]; then log_fail "kexec_load succeeded" elif [ $ima_appraise -eq 0 -o $arch_policy -eq 0 ]; then log_info "Either IMA or the IMA arch policy is not enabled" fi log_pass "kexec_load succeeded" else if [ $secureboot -eq 1 ] && [ $arch_policy -eq 1 ] ; then log_pass "kexec_load failed" else log_fail "kexec_load failed" fi fi