cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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test_klp_livepatch.c (1090B)

      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>
     11static 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
     18static struct klp_func funcs[] = {
     19	{
     20		.old_name = "cmdline_proc_show",
     21		.new_func = livepatch_cmdline_proc_show,
     22	}, { }
     23};
     24
     25static struct klp_object objs[] = {
     26	{
     27		/* name being NULL means vmlinux */
     28		.funcs = funcs,
     29	}, { }
     30};
     31
     32static struct klp_patch patch = {
     33	.mod = THIS_MODULE,
     34	.objs = objs,
     35};
     36
     37static int test_klp_livepatch_init(void)
     38{
     39	return klp_enable_patch(&patch);
     40}
     41
     42static void test_klp_livepatch_exit(void)
     43{
     44}
     45
     46module_init(test_klp_livepatch_init);
     47module_exit(test_klp_livepatch_exit);
     48MODULE_LICENSE("GPL");
     49MODULE_INFO(livepatch, "Y");
     50MODULE_AUTHOR("Seth Jennings <sjenning@redhat.com>");
     51MODULE_DESCRIPTION("Livepatch test: livepatch module");