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