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