Merge tag 'execve-v6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees...
[platform/kernel/linux-rpi.git] / lib / livepatch / test_klp_livepatch.c
1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (C) 2014 Seth Jennings <sjenning@redhat.com>
3
4 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
5
6 #include <linux/module.h>
7 #include <linux/kernel.h>
8 #include <linux/livepatch.h>
9
10 #include <linux/seq_file.h>
11 static int livepatch_cmdline_proc_show(struct seq_file *m, void *v)
12 {
13         seq_printf(m, "%s: %s\n", THIS_MODULE->name,
14                    "this has been live patched");
15         return 0;
16 }
17
18 static struct klp_func funcs[] = {
19         {
20                 .old_name = "cmdline_proc_show",
21                 .new_func = livepatch_cmdline_proc_show,
22         }, { }
23 };
24
25 static struct klp_object objs[] = {
26         {
27                 /* name being NULL means vmlinux */
28                 .funcs = funcs,
29         }, { }
30 };
31
32 static struct klp_patch patch = {
33         .mod = THIS_MODULE,
34         .objs = objs,
35 };
36
37 static int test_klp_livepatch_init(void)
38 {
39         return klp_enable_patch(&patch);
40 }
41
42 static void test_klp_livepatch_exit(void)
43 {
44 }
45
46 module_init(test_klp_livepatch_init);
47 module_exit(test_klp_livepatch_exit);
48 MODULE_LICENSE("GPL");
49 MODULE_INFO(livepatch, "Y");
50 MODULE_AUTHOR("Seth Jennings <sjenning@redhat.com>");
51 MODULE_DESCRIPTION("Livepatch test: livepatch module");