tools/testing/selftests/livepatch/test-sysfs.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # Copyright (C) 2022 Song Liu <song@kernel.org>
   4
   5 . $(dirname $0)/functions.sh
   6
   7 MOD_LIVEPATCH=test_klp_livepatch
   8
   9 setup_config
  10
  11 # - load a livepatch and verifies the sysfs entries work as expected
  12
  13 start_test "sysfs test"
  14
  15 load_lp $MOD_LIVEPATCH
  16
  17 check_sysfs_rights "$MOD_LIVEPATCH" "" "drwxr-xr-x"
  18 check_sysfs_rights "$MOD_LIVEPATCH" "enabled" "-rw-r--r--"
  19 check_sysfs_value  "$MOD_LIVEPATCH" "enabled" "1"
  20 check_sysfs_rights "$MOD_LIVEPATCH" "force" "--w-------"
  21 check_sysfs_rights "$MOD_LIVEPATCH" "transition" "-r--r--r--"
  22 check_sysfs_value  "$MOD_LIVEPATCH" "transition" "0"
  23 check_sysfs_rights "$MOD_LIVEPATCH" "vmlinux/patched" "-r--r--r--"
  24 check_sysfs_value  "$MOD_LIVEPATCH" "vmlinux/patched" "1"
  25
  26 disable_lp $MOD_LIVEPATCH
  27
  28 unload_lp $MOD_LIVEPATCH
  29
  30 check_result "% modprobe $MOD_LIVEPATCH
  31 livepatch: enabling patch '$MOD_LIVEPATCH'
  32 livepatch: '$MOD_LIVEPATCH': initializing patching transition
  33 livepatch: '$MOD_LIVEPATCH': starting patching transition
  34 livepatch: '$MOD_LIVEPATCH': completing patching transition
  35 livepatch: '$MOD_LIVEPATCH': patching complete
  36 % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled
  37 livepatch: '$MOD_LIVEPATCH': initializing unpatching transition
  38 livepatch: '$MOD_LIVEPATCH': starting unpatching transition
  39 livepatch: '$MOD_LIVEPATCH': completing unpatching transition
  40 livepatch: '$MOD_LIVEPATCH': unpatching complete
  41 % rmmod $MOD_LIVEPATCH"
  42
  43 start_test "sysfs test object/patched"
  44
  45 MOD_LIVEPATCH=test_klp_callbacks_demo
  46 MOD_TARGET=test_klp_callbacks_mod
  47 load_lp $MOD_LIVEPATCH
  48
  49 # check the "patch" file changes as target module loads/unloads
  50 check_sysfs_value  "$MOD_LIVEPATCH" "$MOD_TARGET/patched" "0"
  51 load_mod $MOD_TARGET
  52 check_sysfs_value  "$MOD_LIVEPATCH" "$MOD_TARGET/patched" "1"
  53 unload_mod $MOD_TARGET
  54 check_sysfs_value  "$MOD_LIVEPATCH" "$MOD_TARGET/patched" "0"
  55
  56 disable_lp $MOD_LIVEPATCH
  57 unload_lp $MOD_LIVEPATCH
  58
  59 check_result "% modprobe test_klp_callbacks_demo
  60 livepatch: enabling patch 'test_klp_callbacks_demo'
  61 livepatch: 'test_klp_callbacks_demo': initializing patching transition
  62 test_klp_callbacks_demo: pre_patch_callback: vmlinux
  63 livepatch: 'test_klp_callbacks_demo': starting patching transition
  64 livepatch: 'test_klp_callbacks_demo': completing patching transition
  65 test_klp_callbacks_demo: post_patch_callback: vmlinux
  66 livepatch: 'test_klp_callbacks_demo': patching complete
  67 % modprobe test_klp_callbacks_mod
  68 livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod'
  69 test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init
  70 test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init
  71 test_klp_callbacks_mod: test_klp_callbacks_mod_init
  72 % rmmod test_klp_callbacks_mod
  73 test_klp_callbacks_mod: test_klp_callbacks_mod_exit
  74 test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away
  75 livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod'
  76 test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away
  77 % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled
  78 livepatch: 'test_klp_callbacks_demo': initializing unpatching transition
  79 test_klp_callbacks_demo: pre_unpatch_callback: vmlinux
  80 livepatch: 'test_klp_callbacks_demo': starting unpatching transition
  81 livepatch: 'test_klp_callbacks_demo': completing unpatching transition
  82 test_klp_callbacks_demo: post_unpatch_callback: vmlinux
  83 livepatch: 'test_klp_callbacks_demo': unpatching complete
  84 % rmmod test_klp_callbacks_demo"
  85
  86 exit 0