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selftests/kexec: define a set of common functions

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Define, update and move get_secureboot_mode() to a common file for use
by other tests.

Updated to check both the efivar SecureBoot-$(UUID) and
SetupMode-$(UUID), based on Dave Young's review.

Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Reviewed-by: Petr Vorel <pvorel@suse.cz>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Mimi Zohar 2019-01-24 08:57:20 -05:00 committed by Shuah Khan
parent 89eba7db8e
commit 5025b0f0fa
3 changed files with 42 additions and 14 deletions
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1
tools/testing/selftests/kexec/Makefile
View File

@ -5,6 +5,7 @@ ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/x86/ -e s/x86_64/x86/)
ifeq ($(ARCH),x86)
TEST_PROGS := test_kexec_load.sh
TEST_FILES := kexec_common_lib.sh
include ../lib.mk

38
tools/testing/selftests/kexec/kexec_common_lib.sh Executable file
View File

@ -0,0 +1,38 @@
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# Check efivar SecureBoot-$(the UUID) and SetupMode-$(the UUID).
# The secure boot mode can be accessed either as the last integer
# of "od -An -t u1 /sys/firmware/efi/efivars/SecureBoot-*" or from
# "od -An -t u1 /sys/firmware/efi/vars/SecureBoot-*/data". The efi
# SetupMode can be similarly accessed.
# Return 1 for SecureBoot mode enabled and SetupMode mode disabled.
get_secureboot_mode()
{
local efivarfs="/sys/firmware/efi/efivars"
local secure_boot_file="$efivarfs/../vars/SecureBoot-*/data"
local setup_mode_file="$efivarfs/../vars/SetupMode-*/data"
local secureboot_mode=0
local setup_mode=0
# Make sure that efivars is mounted in the normal location
if ! grep -q "^\S\+ $efivarfs efivarfs" /proc/mounts; then
log_skip "efivars is not mounted on $efivarfs"
fi
# Due to globbing, quoting "secure_boot_file" and "setup_mode_file"
# is not possible. (Todo: initialize variables using find or ls.)
if [ ! -e $secure_boot_file ] || [ ! -e $setup_mode_file ]; then
log_skip "unknown secureboot/setup mode"
fi
secureboot_mode=`od -An -t u1 $secure_boot_file`
setup_mode=`od -An -t u1 $setup_mode_file`
if [ $secureboot_mode -eq 1 ] && [ $setup_mode -eq 0 ]; then
log_info "secure boot mode enabled"
return 1;
fi
log_info "secure boot mode not enabled"
return 0;
}

17
tools/testing/selftests/kexec/test_kexec_load.sh
View File

@ -5,7 +5,7 @@
# is booted in secureboot mode.
TEST="$0"
EFIVARFS="/sys/firmware/efi/efivars"
. ./kexec_common_lib.sh
rc=0
# Kselftest framework requirement - SKIP code is 4.
@ -17,19 +17,8 @@ if [ $(id -ru) -ne 0 ]; then
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($4),1)}'`
get_secureboot_mode
secureboot=$?
# kexec_load should fail in secure boot mode
KERNEL_IMAGE="/boot/vmlinuz-`uname -r`"