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 | |
10 | struct task_struct; |
11 | |
12 | SEC("kprobe/__set_task_comm" ) |
13 | int BPF_KPROBE(prog1, struct task_struct *tsk, const char *buf, bool exec) |
14 | { |
15 | return !tsk; |
16 | } |
17 | |
18 | SEC("kretprobe/__set_task_comm" ) |
19 | int BPF_KRETPROBE(prog2, int ret) |
20 | { |
21 | return ret; |
22 | } |
23 | |
24 | SEC("raw_tp/task_rename" ) |
25 | int prog3(struct bpf_raw_tracepoint_args *ctx) |
26 | { |
27 | return !ctx->args[0]; |
28 | } |
29 | |
30 | SEC("fentry/__set_task_comm" ) |
31 | int BPF_PROG(prog4, struct task_struct *tsk, const char *buf, bool exec) |
32 | { |
33 | return 0; |
34 | } |
35 | |
36 | SEC("fexit/__set_task_comm" ) |
37 | int BPF_PROG(prog5, struct task_struct *tsk, const char *buf, bool exec) |
38 | { |
39 | return 0; |
40 | } |
41 | |
42 | char _license[] SEC("license" ) = "GPL" ; |
43 | |