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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0+
# Loading a kernel image via the kexec_load syscall should fail
# when the kerne is CONFIG_KEXEC_VERIFY_SIG enabled and the system
# is booted in secureboot mode.
TEST="$0"
EFIVARFS="/sys/firmware/efi/efivars"
rc=0
# Kselftest framework requirement - SKIP code is 4.
ksft_skip=4
# kexec requires root privileges
if [ $UID != 0 ]; then
echo "$TEST: must be run as root" >&2
exit $ksft_skip
fi
# Make sure that efivars is mounted in the normal location
if ! grep -q "^\S\+ $EFIVARFS efivarfs" /proc/mounts; then
echo "$TEST: efivars is not mounted on $EFIVARFS" >&2
exit $ksft_skip
fi
# Get secureboot mode
file="$EFIVARFS/SecureBoot-*"
if [ ! -e $file ]; then
echo "$TEST: unknown secureboot mode" >&2
exit $ksft_skip
fi
secureboot=`hexdump $file | awk '{print substr($4,length($4),1)}'`
# kexec_load should fail in secure boot mode
KERNEL_IMAGE="/boot/vmlinuz-`uname -r`"
kexec -l $KERNEL_IMAGE &>> /dev/null
if [ $? == 0 ]; then
kexec -u
if [ "$secureboot" == "1" ]; then
echo "$TEST: kexec_load succeeded [FAIL]"
rc=1
else
echo "$TEST: kexec_load succeeded [PASS]"
fi
else
if [ "$secureboot" == "1" ]; then
echo "$TEST: kexec_load failed [PASS]"
else
echo "$TEST: kexec_load failed [FAIL]"
rc=1
fi
fi
exit $rc
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