linux/tools/testing/selftests/bpf/progs/test_core_reloc_arrays.c
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   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_arrays_output {
  17        int a2;
  18        char b123;
  19        int c1c;
  20        int d00d;
  21        int f01c;
  22};
  23
  24struct core_reloc_arrays_substruct {
  25        int c;
  26        int d;
  27};
  28
  29struct core_reloc_arrays {
  30        int a[5];
  31        char b[2][3][4];
  32        struct core_reloc_arrays_substruct c[3];
  33        struct core_reloc_arrays_substruct d[1][2];
  34        struct core_reloc_arrays_substruct f[][2];
  35};
  36
  37#define CORE_READ(dst, src) bpf_core_read(dst, sizeof(*(dst)), src)
  38
  39SEC("raw_tracepoint/sys_enter")
  40int test_core_arrays(void *ctx)
  41{
  42        struct core_reloc_arrays *in = (void *)&data.in;
  43        struct core_reloc_arrays_output *out = (void *)&data.out;
  44
  45        if (CORE_READ(&out->a2, &in->a[2]))
  46                return 1;
  47        if (CORE_READ(&out->b123, &in->b[1][2][3]))
  48                return 1;
  49        if (CORE_READ(&out->c1c, &in->c[1].c))
  50                return 1;
  51        if (CORE_READ(&out->d00d, &in->d[0][0].d))
  52                return 1;
  53        if (CORE_READ(&out->f01c, &in->f[0][1].c))
  54                return 1;
  55
  56        return 0;
  57}
  58
  59
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