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 enum core_reloc_primitives_enum {
17 	A = 0,
18 	B = 1,
19 };
20 
21 struct core_reloc_primitives {
22 	char a;
23 	int b;
24 	enum core_reloc_primitives_enum c;
25 	void *d;
26 	int (*f)(const char *);
27 };
28 
29 #define CORE_READ(dst, src) bpf_core_read(dst, sizeof(*(dst)), src)
30 
31 SEC("raw_tracepoint/sys_enter")
32 int test_core_primitives(void *ctx)
33 {
34 	struct core_reloc_primitives *in = (void *)&data.in;
35 	struct core_reloc_primitives *out = (void *)&data.out;
36 
37 	if (CORE_READ(&out->a, &in->a) ||
38 	    CORE_READ(&out->b, &in->b) ||
39 	    CORE_READ(&out->c, &in->c) ||
40 	    CORE_READ(&out->d, &in->d) ||
41 	    CORE_READ(&out->f, &in->f))
42 		return 1;
43 
44 	return 0;
45 }
46 
47