| 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_size_output { |
|---|
| 17 | int int_sz; |
|---|
| 18 | int int_off; |
|---|
| 19 | int struct_sz; |
|---|
| 20 | int struct_off; |
|---|
| 21 | int union_sz; |
|---|
| 22 | int union_off; |
|---|
| 23 | int arr_sz; |
|---|
| 24 | int arr_off; |
|---|
| 25 | int arr_elem_sz; |
|---|
| 26 | int arr_elem_off; |
|---|
| 27 | int ptr_sz; |
|---|
| 28 | int ptr_off; |
|---|
| 29 | int enum_sz; |
|---|
| 30 | int enum_off; |
|---|
| 31 | int float_sz; |
|---|
| 32 | int float_off; |
|---|
| 33 | }; |
|---|
| 34 | |
|---|
| 35 | struct core_reloc_size { |
|---|
| 36 | int int_field; |
|---|
| 37 | struct { int x; } struct_field; |
|---|
| 38 | union { int x; } union_field; |
|---|
| 39 | int arr_field[4]; |
|---|
| 40 | void *ptr_field; |
|---|
| 41 | enum { VALUE = 123 } enum_field; |
|---|
| 42 | float float_field; |
|---|
| 43 | }; |
|---|
| 44 | |
|---|
| 45 | SEC("raw_tracepoint/sys_enter" ) |
|---|
| 46 | int test_core_size(void *ctx) |
|---|
| 47 | { |
|---|
| 48 | struct core_reloc_size *in = (void *)&data.in; |
|---|
| 49 | struct core_reloc_size_output *out = (void *)&data.out; |
|---|
| 50 | |
|---|
| 51 | out->int_sz = bpf_core_field_size(in->int_field); |
|---|
| 52 | out->int_off = bpf_core_field_offset(in->int_field); |
|---|
| 53 | |
|---|
| 54 | out->struct_sz = bpf_core_field_size(in->struct_field); |
|---|
| 55 | out->struct_off = bpf_core_field_offset(in->struct_field); |
|---|
| 56 | |
|---|
| 57 | out->union_sz = bpf_core_field_size(in->union_field); |
|---|
| 58 | out->union_off = bpf_core_field_offset(in->union_field); |
|---|
| 59 | |
|---|
| 60 | out->arr_sz = bpf_core_field_size(in->arr_field); |
|---|
| 61 | out->arr_off = bpf_core_field_offset(in->arr_field); |
|---|
| 62 | |
|---|
| 63 | out->arr_elem_sz = bpf_core_field_size(struct core_reloc_size, arr_field[1]); |
|---|
| 64 | out->arr_elem_off = bpf_core_field_offset(struct core_reloc_size, arr_field[1]); |
|---|
| 65 | |
|---|
| 66 | out->ptr_sz = bpf_core_field_size(struct core_reloc_size, ptr_field); |
|---|
| 67 | out->ptr_off = bpf_core_field_offset(struct core_reloc_size, ptr_field); |
|---|
| 68 | |
|---|
| 69 | out->enum_sz = bpf_core_field_size(struct core_reloc_size, enum_field); |
|---|
| 70 | out->enum_off = bpf_core_field_offset(struct core_reloc_size, enum_field); |
|---|
| 71 | |
|---|
| 72 | out->float_sz = bpf_core_field_size(struct core_reloc_size, float_field); |
|---|
| 73 | out->float_off = bpf_core_field_offset(struct core_reloc_size, float_field); |
|---|
| 74 | |
|---|
| 75 | return 0; |
|---|
| 76 | } |
|---|
| 77 | |
|---|
| 78 | |
|---|
