1// SPDX-License-Identifier: GPL-2.0
 2/* Copyright (c) 2019 Facebook */
 3#include <stdbool.h>
 4#include <stddef.h>
 5#include <linux/bpf.h>
 6#include <linux/ptrace.h>
 7#include <bpf/bpf_helpers.h>
 8#include <bpf/bpf_tracing.h>
 9
10struct task_struct;
11
12SEC("kprobe/__set_task_comm")
13int BPF_KPROBE(prog1, struct task_struct *tsk, const char *buf, bool exec)
14{
15	return !tsk;
16}
17
18SEC("kretprobe/__set_task_comm")
19int BPF_KRETPROBE(prog2, int ret)
20{
21	return ret;
22}
23
24SEC("raw_tp/task_rename")
25int prog3(struct bpf_raw_tracepoint_args *ctx)
26{
27	return !ctx->args[0];
28}
29
30SEC("fentry/__set_task_comm")
31int BPF_PROG(prog4, struct task_struct *tsk, const char *buf, bool exec)
32{
33	return 0;
34}
35
36SEC("fexit/__set_task_comm")
37int BPF_PROG(prog5, struct task_struct *tsk, const char *buf, bool exec)
38{
39	return 0;
40}
41
42char _license[] SEC("license") = "GPL";