LXR linux/tools/testing/selftests/bpf/progs/test_core_reloc

   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_helpers.h"
   7
   8char _license[] SEC("license") = "GPL";
   9
  10static volatile struct data {
  11        char in[256];
  12        char out[256];
  13} data;
  14
  15struct core_reloc_arrays_output {
  16        int a2;
  17        char b123;
  18        int c1c;
  19        int d00d;
  20};
  21
  22struct core_reloc_arrays_substruct {
  23        int c;
  24        int d;
  25};
  26
  27struct core_reloc_arrays {
  28        int a[5];
  29        char b[2][3][4];
  30        struct core_reloc_arrays_substruct c[3];
  31        struct core_reloc_arrays_substruct d[1][2];
  32};
  33
  34SEC("raw_tracepoint/sys_enter")
  35int test_core_arrays(void *ctx)
  36{
  37        struct core_reloc_arrays *in = (void *)&data.in;
  38        struct core_reloc_arrays_output *out = (void *)&data.out;
  39
  40        /* in->a[2] */
  41        if (BPF_CORE_READ(&out->a2, &in->a[2]))
  42                return 1;
  43        /* in->b[1][2][3] */
  44        if (BPF_CORE_READ(&out->b123, &in->b[1][2][3]))
  45                return 1;
  46        /* in->c[1].c */
  47        if (BPF_CORE_READ(&out->c1c, &in->c[1].c))
  48                return 1;
  49        /* in->d[0][0].d */
  50        if (BPF_CORE_READ(&out->d00d, &in->d[0][0].d))
  51                return 1;
  52
  53        return 0;
  54}
  55
  56