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