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
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")
test_core_primitives(void * ctx)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