diff options
Diffstat (limited to 'lib/livepatch/test_klp_callbacks_demo2.c')
-rw-r--r-- | lib/livepatch/test_klp_callbacks_demo2.c | 93 |
1 files changed, 0 insertions, 93 deletions
diff --git a/lib/livepatch/test_klp_callbacks_demo2.c b/lib/livepatch/test_klp_callbacks_demo2.c deleted file mode 100644 index 5417573e80..0000000000 --- a/lib/livepatch/test_klp_callbacks_demo2.c +++ /dev/null @@ -1,93 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -// Copyright (C) 2018 Joe Lawrence <joe.lawrence@redhat.com> - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/livepatch.h> - -static int replace; -module_param(replace, int, 0644); -MODULE_PARM_DESC(replace, "replace (default=0)"); - -static const char *const module_state[] = { - [MODULE_STATE_LIVE] = "[MODULE_STATE_LIVE] Normal state", - [MODULE_STATE_COMING] = "[MODULE_STATE_COMING] Full formed, running module_init", - [MODULE_STATE_GOING] = "[MODULE_STATE_GOING] Going away", - [MODULE_STATE_UNFORMED] = "[MODULE_STATE_UNFORMED] Still setting it up", -}; - -static void callback_info(const char *callback, struct klp_object *obj) -{ - if (obj->mod) - pr_info("%s: %s -> %s\n", callback, obj->mod->name, - module_state[obj->mod->state]); - else - pr_info("%s: vmlinux\n", callback); -} - -/* Executed on object patching (ie, patch enablement) */ -static int pre_patch_callback(struct klp_object *obj) -{ - callback_info(__func__, obj); - return 0; -} - -/* Executed on object unpatching (ie, patch disablement) */ -static void post_patch_callback(struct klp_object *obj) -{ - callback_info(__func__, obj); -} - -/* Executed on object unpatching (ie, patch disablement) */ -static void pre_unpatch_callback(struct klp_object *obj) -{ - callback_info(__func__, obj); -} - -/* Executed on object unpatching (ie, patch disablement) */ -static void post_unpatch_callback(struct klp_object *obj) -{ - callback_info(__func__, obj); -} - -static struct klp_func no_funcs[] = { - { } -}; - -static struct klp_object objs[] = { - { - .name = NULL, /* vmlinux */ - .funcs = no_funcs, - .callbacks = { - .pre_patch = pre_patch_callback, - .post_patch = post_patch_callback, - .pre_unpatch = pre_unpatch_callback, - .post_unpatch = post_unpatch_callback, - }, - }, { } -}; - -static struct klp_patch patch = { - .mod = THIS_MODULE, - .objs = objs, - /* set .replace in the init function below for demo purposes */ -}; - -static int test_klp_callbacks_demo2_init(void) -{ - patch.replace = replace; - return klp_enable_patch(&patch); -} - -static void test_klp_callbacks_demo2_exit(void) -{ -} - -module_init(test_klp_callbacks_demo2_init); -module_exit(test_klp_callbacks_demo2_exit); -MODULE_LICENSE("GPL"); -MODULE_INFO(livepatch, "Y"); -MODULE_AUTHOR("Joe Lawrence <joe.lawrence@redhat.com>"); -MODULE_DESCRIPTION("Livepatch test: livepatch demo2"); |