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51 lines
1.1 KiB
51 lines
1.1 KiB
// SPDX-License-Identifier: GPL-2.0 |
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// Copyright (C) 2014 Seth Jennings <[email protected]> |
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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#include <linux/module.h> |
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#include <linux/kernel.h> |
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#include <linux/livepatch.h> |
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#include <linux/seq_file.h> |
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static int livepatch_cmdline_proc_show(struct seq_file *m, void *v) |
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{ |
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seq_printf(m, "%s: %s\n", THIS_MODULE->name, |
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"this has been live patched"); |
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return 0; |
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} |
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static struct klp_func funcs[] = { |
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{ |
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.old_name = "cmdline_proc_show", |
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.new_func = livepatch_cmdline_proc_show, |
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}, { } |
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}; |
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static struct klp_object objs[] = { |
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{ |
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/* name being NULL means vmlinux */ |
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.funcs = funcs, |
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}, { } |
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}; |
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static struct klp_patch patch = { |
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.mod = THIS_MODULE, |
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.objs = objs, |
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}; |
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static int test_klp_livepatch_init(void) |
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{ |
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return klp_enable_patch(&patch); |
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} |
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static void test_klp_livepatch_exit(void) |
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{ |
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} |
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module_init(test_klp_livepatch_init); |
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module_exit(test_klp_livepatch_exit); |
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MODULE_LICENSE("GPL"); |
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MODULE_INFO(livepatch, "Y"); |
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MODULE_AUTHOR("Seth Jennings <[email protected]>"); |
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MODULE_DESCRIPTION("Livepatch test: livepatch module");
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