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_helpers.h"
7 #include "bpf_core_read.h"
8 
9 char _license[] SEC("license") = "GPL";
10 
11 struct {
12 	char in[256];
13 	char out[256];
14 } data = {};
15 
16 struct core_reloc_arrays_output {
17 	int a2;
18 	char b123;
19 	int c1c;
20 	int d00d;
21 };
22 
23 struct core_reloc_arrays_substruct {
24 	int c;
25 	int d;
26 };
27 
28 struct core_reloc_arrays {
29 	int a[5];
30 	char b[2][3][4];
31 	struct core_reloc_arrays_substruct c[3];
32 	struct core_reloc_arrays_substruct d[1][2];
33 };
34 
35 #define CORE_READ(dst, src) bpf_core_read(dst, sizeof(*(dst)), src)
36 
37 SEC("raw_tracepoint/sys_enter")
38 int test_core_arrays(void *ctx)
39 {
40 	struct core_reloc_arrays *in = (void *)&data.in;
41 	struct core_reloc_arrays_output *out = (void *)&data.out;
42 
43 	/* in->a[2] */
44 	if (CORE_READ(&out->a2, &in->a[2]))
45 		return 1;
46 	/* in->b[1][2][3] */
47 	if (CORE_READ(&out->b123, &in->b[1][2][3]))
48 		return 1;
49 	/* in->c[1].c */
50 	if (CORE_READ(&out->c1c, &in->c[1].c))
51 		return 1;
52 	/* in->d[0][0].d */
53 	if (CORE_READ(&out->d00d, &in->d[0][0].d))
54 		return 1;
55 
56 	return 0;
57 }
58 
59