1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun // Copyright (C) 2014 Seth Jennings <sjenning@redhat.com>
3*4882a593Smuzhiyun
4*4882a593Smuzhiyun #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun #include <linux/module.h>
7*4882a593Smuzhiyun #include <linux/kernel.h>
8*4882a593Smuzhiyun #include <linux/livepatch.h>
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include <linux/seq_file.h>
livepatch_cmdline_proc_show(struct seq_file * m,void * v)11*4882a593Smuzhiyun static int livepatch_cmdline_proc_show(struct seq_file *m, void *v)
12*4882a593Smuzhiyun {
13*4882a593Smuzhiyun seq_printf(m, "%s: %s\n", THIS_MODULE->name,
14*4882a593Smuzhiyun "this has been live patched");
15*4882a593Smuzhiyun return 0;
16*4882a593Smuzhiyun }
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun static struct klp_func funcs[] = {
19*4882a593Smuzhiyun {
20*4882a593Smuzhiyun .old_name = "cmdline_proc_show",
21*4882a593Smuzhiyun .new_func = livepatch_cmdline_proc_show,
22*4882a593Smuzhiyun }, { }
23*4882a593Smuzhiyun };
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun static struct klp_object objs[] = {
26*4882a593Smuzhiyun {
27*4882a593Smuzhiyun /* name being NULL means vmlinux */
28*4882a593Smuzhiyun .funcs = funcs,
29*4882a593Smuzhiyun }, { }
30*4882a593Smuzhiyun };
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun static struct klp_patch patch = {
33*4882a593Smuzhiyun .mod = THIS_MODULE,
34*4882a593Smuzhiyun .objs = objs,
35*4882a593Smuzhiyun };
36*4882a593Smuzhiyun
test_klp_livepatch_init(void)37*4882a593Smuzhiyun static int test_klp_livepatch_init(void)
38*4882a593Smuzhiyun {
39*4882a593Smuzhiyun return klp_enable_patch(&patch);
40*4882a593Smuzhiyun }
41*4882a593Smuzhiyun
test_klp_livepatch_exit(void)42*4882a593Smuzhiyun static void test_klp_livepatch_exit(void)
43*4882a593Smuzhiyun {
44*4882a593Smuzhiyun }
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun module_init(test_klp_livepatch_init);
47*4882a593Smuzhiyun module_exit(test_klp_livepatch_exit);
48*4882a593Smuzhiyun MODULE_LICENSE("GPL");
49*4882a593Smuzhiyun MODULE_INFO(livepatch, "Y");
50*4882a593Smuzhiyun MODULE_AUTHOR("Seth Jennings <sjenning@redhat.com>");
51*4882a593Smuzhiyun MODULE_DESCRIPTION("Livepatch test: livepatch module");
52