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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
#
# Kselftest framework defines: ksft_pass=0, ksft_fail=1, ksft_skip=4
VERBOSE="${VERBOSE:-1}"
log_info()
{
[ $VERBOSE -ne 0 ] && echo "[INFO] $1"
}
# The ksefltest framework requirement returns 0 for PASS.
log_pass()
{
[ $VERBOSE -ne 0 ] && echo "$1 [PASS]"
exit 0
}
# The ksefltest framework requirement returns 1 for FAIL.
log_fail()
{
[ $VERBOSE -ne 0 ] && echo "$1 [FAIL]"
exit 1
}
# The ksefltest framework requirement returns 4 for SKIP.
log_skip()
{
[ $VERBOSE -ne 0 ] && echo "$1"
exit 4
}
# Check efivar SecureBoot-$(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;
}
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