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 9char _license[] SEC("license") = "GPL"; 10 11struct { 12 char in[256]; 13 char out[256]; 14} data = {}; 15 16struct 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 29SEC("raw_tracepoint/sys_enter") 30int 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