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 | struct core_reloc_ints { |
17 | uint8_t u8_field; |
18 | int8_t s8_field; |
19 | uint16_t u16_field; |
20 | int16_t s16_field; |
21 | uint32_t u32_field; |
22 | int32_t s32_field; |
23 | uint64_t u64_field; |
24 | int64_t s64_field; |
25 | }; |
26 | |
27 | #define CORE_READ(dst, src) bpf_core_read(dst, sizeof(*(dst)), src) |
28 | |
29 | SEC("raw_tracepoint/sys_enter" ) |
30 | int test_core_ints(void *ctx) |
31 | { |
32 | struct core_reloc_ints *in = (void *)&data.in; |
33 | struct core_reloc_ints *out = (void *)&data.out; |
34 | |
35 | if (CORE_READ(&out->u8_field, &in->u8_field) || |
36 | CORE_READ(&out->s8_field, &in->s8_field) || |
37 | CORE_READ(&out->u16_field, &in->u16_field) || |
38 | CORE_READ(&out->s16_field, &in->s16_field) || |
39 | CORE_READ(&out->u32_field, &in->u32_field) || |
40 | CORE_READ(&out->s32_field, &in->s32_field) || |
41 | CORE_READ(&out->u64_field, &in->u64_field) || |
42 | CORE_READ(&out->s64_field, &in->s64_field)) |
43 | return 1; |
44 | |
45 | return 0; |
46 | } |
47 | |
48 | |