1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (c) 2019 Facebook */
3
4#include <stdbool.h>
5#include <linux/bpf.h>
6#include <bpf/bpf_helpers.h>
7
8__u64 out__bpf_link_fops = -1;
9__u64 out__bpf_link_fops1 = -1;
10__u64 out__btf_size = -1;
11__u64 out__per_cpu_start = -1;
12
13extern const void bpf_link_fops __ksym;
14extern const void __start_BTF __ksym;
15extern const void __stop_BTF __ksym;
16extern const void __per_cpu_start __ksym;
17/* non-existing symbol, weak, default to zero */
18extern const void bpf_link_fops1 __ksym __weak;
19
20SEC("raw_tp/sys_enter")
21int handler(const void *ctx)
22{
23	out__bpf_link_fops = (__u64)&bpf_link_fops;
24	out__btf_size = (__u64)(&__stop_BTF - &__start_BTF);
25	out__per_cpu_start = (__u64)&__per_cpu_start;
26
27	out__bpf_link_fops1 = (__u64)&bpf_link_fops1;
28
29	return 0;
30}
31
32char _license[] SEC("license") = "GPL";
33