tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (c) 2025 Meta Platforms, Inc. and affiliates. */
3
4#include <linux/bpf.h>
5#include <bpf/bpf_helpers.h>
6#include <bpf/bpf_tracing.h>
7
8int fentry_hit;
9int fexit_hit;
10int my_pid;
11
12SEC("fentry/cmdline_proc_show")
13int BPF_PROG(fentry_cmdline)
14{
15 if (my_pid != (bpf_get_current_pid_tgid() >> 32))
16 return 0;
17
18 fentry_hit = 1;
19 return 0;
20}
21
22SEC("fexit/cmdline_proc_show")
23int BPF_PROG(fexit_cmdline)
24{
25 if (my_pid != (bpf_get_current_pid_tgid() >> 32))
26 return 0;
27
28 fexit_hit = 1;
29 return 0;
30}