diff options
Diffstat (limited to 'tools/testing/selftests/kexec/kexec_common_lib.sh')
| -rwxr-xr-x | tools/testing/selftests/kexec/kexec_common_lib.sh | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/tools/testing/selftests/kexec/kexec_common_lib.sh b/tools/testing/selftests/kexec/kexec_common_lib.sh new file mode 100755 index 000000000000..43017cfe88f7 --- /dev/null +++ b/tools/testing/selftests/kexec/kexec_common_lib.sh @@ -0,0 +1,220 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# +# Kselftest framework defines: ksft_pass=0, ksft_fail=1, ksft_skip=4 + +VERBOSE="${VERBOSE:-1}" +IKCONFIG="/tmp/config-`uname -r`" +KERNEL_IMAGE="/boot/vmlinuz-`uname -r`" +SECURITYFS=$(grep "securityfs" /proc/mounts | awk '{print $2}') + +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). +# (Based on kdump-lib.sh) +get_efivarfs_secureboot_mode() +{ + local efivarfs="/sys/firmware/efi/efivars" + local secure_boot_file="" + local setup_mode_file="" + local secureboot_mode=0 + local setup_mode=0 + + # Make sure that efivar_fs is mounted in the normal location + if ! grep -q "^\S\+ $efivarfs efivarfs" /proc/mounts; then + log_info "efivars is not mounted on $efivarfs" + return 0; + fi + secure_boot_file=$(find "$efivarfs" -name SecureBoot-* 2>/dev/null) + setup_mode_file=$(find "$efivarfs" -name SetupMode-* 2>/dev/null) + if [ -f "$secure_boot_file" ] && [ -f "$setup_mode_file" ]; then + secureboot_mode=$(hexdump -v -e '/1 "%d\ "' \ + "$secure_boot_file"|cut -d' ' -f 5) + setup_mode=$(hexdump -v -e '/1 "%d\ "' \ + "$setup_mode_file"|cut -d' ' -f 5) + + if [ $secureboot_mode -eq 1 ] && [ $setup_mode -eq 0 ]; then + log_info "secure boot mode enabled (CONFIG_EFIVAR_FS)" + return 1; + fi + fi + return 0; +} + +get_efi_var_secureboot_mode() +{ + local efi_vars + local secure_boot_file + local setup_mode_file + local secureboot_mode + local setup_mode + + if [ ! -d "$efi_vars" ]; then + log_skip "efi_vars is not enabled\n" + fi + secure_boot_file=$(find "$efi_vars" -name SecureBoot-* 2>/dev/null) + setup_mode_file=$(find "$efi_vars" -name SetupMode-* 2>/dev/null) + if [ -f "$secure_boot_file/data" ] && \ + [ -f "$setup_mode_file/data" ]; then + secureboot_mode=`od -An -t u1 "$secure_boot_file/data"` + setup_mode=`od -An -t u1 "$setup_mode_file/data"` + + if [ $secureboot_mode -eq 1 ] && [ $setup_mode -eq 0 ]; then + log_info "secure boot mode enabled (CONFIG_EFI_VARS)" + return 1; + fi + fi + return 0; +} + +# Check efivar SecureBoot-$(the UUID) and SetupMode-$(the UUID). +# The secure boot mode can be accessed either as the last integer +# of "od -An -t u1 /sys/firmware/efi/efivars/SecureBoot-*" or from +# "od -An -t u1 /sys/firmware/efi/vars/SecureBoot-*/data". The efi +# SetupMode can be similarly accessed. +# Return 1 for SecureBoot mode enabled and SetupMode mode disabled. +get_secureboot_mode() +{ + local secureboot_mode=0 + + get_efivarfs_secureboot_mode + secureboot_mode=$? + + # fallback to using the efi_var files + if [ $secureboot_mode -eq 0 ]; then + get_efi_var_secureboot_mode + secureboot_mode=$? + fi + + if [ $secureboot_mode -eq 0 ]; then + log_info "secure boot mode not enabled" + fi + return $secureboot_mode; +} + +require_root_privileges() +{ + if [ $(id -ru) -ne 0 ]; then + log_skip "requires root privileges" + fi +} + +# Look for config option in Kconfig file. +# Return 1 for found and 0 for not found. +kconfig_enabled() +{ + local config="$1" + local msg="$2" + + grep -E -q $config $IKCONFIG + if [ $? -eq 0 ]; then + log_info "$msg" + return 1 + fi + return 0 +} + +# Attempt to get the kernel config first via proc, and then by +# extracting it from the kernel image or the configs.ko using +# scripts/extract-ikconfig. +# Return 1 for found. +get_kconfig() +{ + local proc_config="/proc/config.gz" + local module_dir="/lib/modules/`uname -r`" + local configs_module="$module_dir/kernel/kernel/configs.ko" + + if [ ! -f $proc_config ]; then + modprobe configs > /dev/null 2>&1 + fi + if [ -f $proc_config ]; then + cat $proc_config | gunzip > $IKCONFIG 2>/dev/null + if [ $? -eq 0 ]; then + return 1 + fi + fi + + local extract_ikconfig="$module_dir/source/scripts/extract-ikconfig" + if [ ! -f $extract_ikconfig ]; then + log_skip "extract-ikconfig not found" + fi + + $extract_ikconfig $KERNEL_IMAGE > $IKCONFIG 2>/dev/null + if [ $? -eq 1 ]; then + if [ ! -f $configs_module ]; then + log_skip "CONFIG_IKCONFIG not enabled" + fi + $extract_ikconfig $configs_module > $IKCONFIG + if [ $? -eq 1 ]; then + log_skip "CONFIG_IKCONFIG not enabled" + fi + fi + return 1 +} + +# Make sure that securityfs is mounted +mount_securityfs() +{ + if [ -z $SECURITYFS ]; then + SECURITYFS=/sys/kernel/security + mount -t securityfs security $SECURITYFS + fi + + if [ ! -d "$SECURITYFS" ]; then + log_fail "$SECURITYFS :securityfs is not mounted" + fi +} + +# The policy rule format is an "action" followed by key-value pairs. This +# function supports up to two key-value pairs, in any order. +# For example: action func=<keyword> [appraise_type=<type>] +# Return 1 for found and 0 for not found. +check_ima_policy() +{ + local action="$1" + local keypair1="$2" + local keypair2="$3" + local ret=0 + + mount_securityfs + + local ima_policy=$SECURITYFS/ima/policy + if [ ! -e $ima_policy ]; then + log_fail "$ima_policy not found" + fi + + if [ -n $keypair2 ]; then + grep -e "^$action.*$keypair1" "$ima_policy" | \ + grep -q -e "$keypair2" + else + grep -q -e "^$action.*$keypair1" "$ima_policy" + fi + + # invert "grep -q" result, returning 1 for found. + [ $? -eq 0 ] && ret=1 + return $ret +} |