// SPDX-License-Identifier: GPL-2.0 // Copyright (C) 2024 Marcos Paulo de Souza // Copyright (C) 2024 Michael Vetter #include #include #include 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 "); MODULE_DESCRIPTION("Livepatch test: kprobe function");