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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2022 Song Liu <song@kernel.org>
. $(dirname $0)/functions.sh
MOD_LIVEPATCH=test_klp_livepatch
MOD_LIVEPATCH2=test_klp_callbacks_demo
MOD_LIVEPATCH3=test_klp_syscall
HAS_PATCH_ATTR=0
HAS_REPLACE_ATTR=0
HAS_STACK_ORDER_ATTR=0
setup_config
# - load a livepatch and verifies the sysfs entries work as expected
start_test "sysfs test"
load_lp $MOD_LIVEPATCH
check_sysfs_rights "$MOD_LIVEPATCH" "" "drwxr-xr-x"
check_sysfs_rights "$MOD_LIVEPATCH" "enabled" "-rw-r--r--"
check_sysfs_value "$MOD_LIVEPATCH" "enabled" "1"
check_sysfs_rights "$MOD_LIVEPATCH" "force" "--w-------"
check_sysfs_rights "$MOD_LIVEPATCH" "transition" "-r--r--r--"
check_sysfs_value "$MOD_LIVEPATCH" "transition" "0"
if does_sysfs_exist "$MOD_LIVEPATCH/vmlinux" "patched"; then
check_sysfs_rights "$MOD_LIVEPATCH" "vmlinux/patched" "-r--r--r--"
check_sysfs_value "$MOD_LIVEPATCH" "vmlinux/patched" "1"
HAS_PATCH_ATTR=1
fi
if does_sysfs_exist "$MOD_LIVEPATCH" "replace"; then
check_sysfs_rights "$MOD_LIVEPATCH" "replace" "-r--r--r--"
HAS_REPLACE_ATTR=1
fi
if does_sysfs_exist "$MOD_LIVEPATCH" "stack_order"; then
check_sysfs_rights "$MOD_LIVEPATCH" "stack_order" "-r--r--r--"
check_sysfs_value "$MOD_LIVEPATCH" "stack_order" "1"
HAS_STACK_ORDER_ATTR=1
fi
disable_lp $MOD_LIVEPATCH
unload_lp $MOD_LIVEPATCH
check_result "% insmod test_modules/$MOD_LIVEPATCH.ko
livepatch: enabling patch '$MOD_LIVEPATCH'
livepatch: '$MOD_LIVEPATCH': initializing patching transition
livepatch: '$MOD_LIVEPATCH': starting patching transition
livepatch: '$MOD_LIVEPATCH': completing patching transition
livepatch: '$MOD_LIVEPATCH': patching complete
% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH/enabled
livepatch: '$MOD_LIVEPATCH': initializing unpatching transition
livepatch: '$MOD_LIVEPATCH': starting unpatching transition
livepatch: '$MOD_LIVEPATCH': completing unpatching transition
livepatch: '$MOD_LIVEPATCH': unpatching complete
% rmmod $MOD_LIVEPATCH"
if [[ "$HAS_PATCH_ATTR" == "1" ]]; then
start_test "sysfs test object/patched"
MOD_TARGET=test_klp_callbacks_mod
load_lp $MOD_LIVEPATCH2
# check the "patch" file changes as target module loads/unloads
check_sysfs_value "$MOD_LIVEPATCH2" "$MOD_TARGET/patched" "0"
load_mod $MOD_TARGET
check_sysfs_value "$MOD_LIVEPATCH2" "$MOD_TARGET/patched" "1"
unload_mod $MOD_TARGET
check_sysfs_value "$MOD_LIVEPATCH2" "$MOD_TARGET/patched" "0"
disable_lp $MOD_LIVEPATCH2
unload_lp $MOD_LIVEPATCH2
check_result "% insmod test_modules/$MOD_LIVEPATCH2.ko
livepatch: enabling patch '$MOD_LIVEPATCH2'
livepatch: '$MOD_LIVEPATCH2': initializing patching transition
$MOD_LIVEPATCH2: pre_patch_callback: vmlinux
livepatch: '$MOD_LIVEPATCH2': starting patching transition
livepatch: '$MOD_LIVEPATCH2': completing patching transition
$MOD_LIVEPATCH2: post_patch_callback: vmlinux
livepatch: '$MOD_LIVEPATCH2': patching complete
% insmod test_modules/$MOD_TARGET.ko
livepatch: applying patch '$MOD_LIVEPATCH2' to loading module '$MOD_TARGET'
$MOD_LIVEPATCH2: pre_patch_callback: $MOD_TARGET -> [MODULE_STATE_COMING] Full formed, running module_init
$MOD_LIVEPATCH2: post_patch_callback: $MOD_TARGET -> [MODULE_STATE_COMING] Full formed, running module_init
$MOD_TARGET: test_klp_callbacks_mod_init
% rmmod $MOD_TARGET
$MOD_TARGET: test_klp_callbacks_mod_exit
$MOD_LIVEPATCH2: pre_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going away
livepatch: reverting patch '$MOD_LIVEPATCH2' on unloading module '$MOD_TARGET'
$MOD_LIVEPATCH2: post_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going away
% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH2/enabled
livepatch: '$MOD_LIVEPATCH2': initializing unpatching transition
$MOD_LIVEPATCH2: pre_unpatch_callback: vmlinux
livepatch: '$MOD_LIVEPATCH2': starting unpatching transition
livepatch: '$MOD_LIVEPATCH2': completing unpatching transition
$MOD_LIVEPATCH2: post_unpatch_callback: vmlinux
livepatch: '$MOD_LIVEPATCH2': unpatching complete
% rmmod $MOD_LIVEPATCH2"
fi
if [[ "$HAS_REPLACE_ATTR" == "1" ]]; then
start_test "sysfs test replace enabled"
MOD_ATOMIC_REPLACE=test_klp_atomic_replace
load_lp $MOD_ATOMIC_REPLACE replace=1
check_sysfs_rights "$MOD_ATOMIC_REPLACE" "replace" "-r--r--r--"
check_sysfs_value "$MOD_ATOMIC_REPLACE" "replace" "1"
disable_lp $MOD_ATOMIC_REPLACE
unload_lp $MOD_ATOMIC_REPLACE
check_result "% insmod test_modules/$MOD_ATOMIC_REPLACE.ko replace=1
livepatch: enabling patch '$MOD_ATOMIC_REPLACE'
livepatch: '$MOD_ATOMIC_REPLACE': initializing patching transition
livepatch: '$MOD_ATOMIC_REPLACE': starting patching transition
livepatch: '$MOD_ATOMIC_REPLACE': completing patching transition
livepatch: '$MOD_ATOMIC_REPLACE': patching complete
% echo 0 > $SYSFS_KLP_DIR/$MOD_ATOMIC_REPLACE/enabled
livepatch: '$MOD_ATOMIC_REPLACE': initializing unpatching transition
livepatch: '$MOD_ATOMIC_REPLACE': starting unpatching transition
livepatch: '$MOD_ATOMIC_REPLACE': completing unpatching transition
livepatch: '$MOD_ATOMIC_REPLACE': unpatching complete
% rmmod $MOD_ATOMIC_REPLACE"
start_test "sysfs test replace disabled"
load_lp $MOD_ATOMIC_REPLACE replace=0
check_sysfs_rights "$MOD_ATOMIC_REPLACE" "replace" "-r--r--r--"
check_sysfs_value "$MOD_ATOMIC_REPLACE" "replace" "0"
disable_lp $MOD_ATOMIC_REPLACE
unload_lp $MOD_ATOMIC_REPLACE
check_result "% insmod test_modules/$MOD_ATOMIC_REPLACE.ko replace=0
livepatch: enabling patch '$MOD_ATOMIC_REPLACE'
livepatch: '$MOD_ATOMIC_REPLACE': initializing patching transition
livepatch: '$MOD_ATOMIC_REPLACE': starting patching transition
livepatch: '$MOD_ATOMIC_REPLACE': completing patching transition
livepatch: '$MOD_ATOMIC_REPLACE': patching complete
% echo 0 > $SYSFS_KLP_DIR/$MOD_ATOMIC_REPLACE/enabled
livepatch: '$MOD_ATOMIC_REPLACE': initializing unpatching transition
livepatch: '$MOD_ATOMIC_REPLACE': starting unpatching transition
livepatch: '$MOD_ATOMIC_REPLACE': completing unpatching transition
livepatch: '$MOD_ATOMIC_REPLACE': unpatching complete
% rmmod $MOD_ATOMIC_REPLACE"
fi
if [[ "$HAS_STACK_ORDER_ATTR" == "1" ]]; then
start_test "sysfs test stack_order value"
load_lp $MOD_LIVEPATCH
check_sysfs_value "$MOD_LIVEPATCH" "stack_order" "1"
load_lp $MOD_LIVEPATCH2
check_sysfs_value "$MOD_LIVEPATCH2" "stack_order" "2"
load_lp $MOD_LIVEPATCH3
check_sysfs_value "$MOD_LIVEPATCH3" "stack_order" "3"
disable_lp $MOD_LIVEPATCH2
unload_lp $MOD_LIVEPATCH2
check_sysfs_value "$MOD_LIVEPATCH" "stack_order" "1"
check_sysfs_value "$MOD_LIVEPATCH3" "stack_order" "2"
disable_lp $MOD_LIVEPATCH3
unload_lp $MOD_LIVEPATCH3
disable_lp $MOD_LIVEPATCH
unload_lp $MOD_LIVEPATCH
check_result "% insmod test_modules/$MOD_LIVEPATCH.ko
livepatch: enabling patch '$MOD_LIVEPATCH'
livepatch: '$MOD_LIVEPATCH': initializing patching transition
livepatch: '$MOD_LIVEPATCH': starting patching transition
livepatch: '$MOD_LIVEPATCH': completing patching transition
livepatch: '$MOD_LIVEPATCH': patching complete
% insmod test_modules/$MOD_LIVEPATCH2.ko
livepatch: enabling patch '$MOD_LIVEPATCH2'
livepatch: '$MOD_LIVEPATCH2': initializing patching transition
$MOD_LIVEPATCH2: pre_patch_callback: vmlinux
livepatch: '$MOD_LIVEPATCH2': starting patching transition
livepatch: '$MOD_LIVEPATCH2': completing patching transition
$MOD_LIVEPATCH2: post_patch_callback: vmlinux
livepatch: '$MOD_LIVEPATCH2': patching complete
% insmod test_modules/$MOD_LIVEPATCH3.ko
livepatch: enabling patch '$MOD_LIVEPATCH3'
livepatch: '$MOD_LIVEPATCH3': initializing patching transition
livepatch: '$MOD_LIVEPATCH3': starting patching transition
livepatch: '$MOD_LIVEPATCH3': completing patching transition
livepatch: '$MOD_LIVEPATCH3': patching complete
% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH2/enabled
livepatch: '$MOD_LIVEPATCH2': initializing unpatching transition
$MOD_LIVEPATCH2: pre_unpatch_callback: vmlinux
livepatch: '$MOD_LIVEPATCH2': starting unpatching transition
livepatch: '$MOD_LIVEPATCH2': completing unpatching transition
$MOD_LIVEPATCH2: post_unpatch_callback: vmlinux
livepatch: '$MOD_LIVEPATCH2': unpatching complete
% rmmod $MOD_LIVEPATCH2
% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH3/enabled
livepatch: '$MOD_LIVEPATCH3': initializing unpatching transition
livepatch: '$MOD_LIVEPATCH3': starting unpatching transition
livepatch: '$MOD_LIVEPATCH3': completing unpatching transition
livepatch: '$MOD_LIVEPATCH3': unpatching complete
% rmmod $MOD_LIVEPATCH3
% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH/enabled
livepatch: '$MOD_LIVEPATCH': initializing unpatching transition
livepatch: '$MOD_LIVEPATCH': starting unpatching transition
livepatch: '$MOD_LIVEPATCH': completing unpatching transition
livepatch: '$MOD_LIVEPATCH': unpatching complete
% rmmod $MOD_LIVEPATCH"
fi
exit 0
|
