1// SPDX-License-Identifier: GPL-2.0
2// Copyright (c) 2019 Facebook
3
4#include <linux/bpf.h>
5#include <stdint.h>
6#include <bpf/bpf_helpers.h>
7#include <bpf/bpf_core_read.h>
8
9char _license[] SEC("license") = "GPL";
10
11struct {
12 char in[256];
13 char out[256];
14} data = {};
15
16struct core_reloc_ptr_as_arr {
17 int a;
18};
19
20#define CORE_READ(dst, src) bpf_core_read(dst, sizeof(*(dst)), src)
21
22SEC("raw_tracepoint/sys_enter")
23int test_core_ptr_as_arr(void *ctx)
24{
25 struct core_reloc_ptr_as_arr *in = (void *)&data.in;
26 struct core_reloc_ptr_as_arr *out = (void *)&data.out;
27
28 if (CORE_READ(&out->a, &in[2].a))
29 return 1;
30
31 return 0;
32}
33
34

source code of linux/tools/testing/selftests/bpf/progs/test_core_reloc_ptr_as_arr.c