39 lines
870 B
C
39 lines
870 B
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (C) 2024 Marcos Paulo de Souza <mpdesouza@suse.com>
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// Copyright (C) 2024 Michael Vetter <mvetter@suse.com>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/kprobes.h>
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static bool has_post_handler = true;
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module_param(has_post_handler, bool, 0444);
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static void __kprobes post_handler(struct kprobe *p, struct pt_regs *regs,
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unsigned long flags)
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{
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}
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static struct kprobe kp = {
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.symbol_name = "cmdline_proc_show",
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};
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static int __init kprobe_init(void)
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{
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if (has_post_handler)
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kp.post_handler = post_handler;
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return register_kprobe(&kp);
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}
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static void __exit kprobe_exit(void)
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{
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unregister_kprobe(&kp);
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}
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module_init(kprobe_init)
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module_exit(kprobe_exit)
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Michael Vetter <mvetter@suse.com>");
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MODULE_DESCRIPTION("Livepatch test: kprobe function");
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