root/tools/testing/selftests/bpf/progs/test_core_reloc_mods.c

DEFINITIONS

1. SEC

   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 
   8 char _license[] SEC("license") = "GPL";
   9 
  10 static volatile struct data {
  11         char in[256];
  12         char out[256];
  13 } data;
  14 
  15 struct core_reloc_mods_output {
  16         int a, b, c, d, e, f, g, h;
  17 };
  18 
  19 typedef const int int_t;
  20 typedef const char *char_ptr_t;
  21 typedef const int arr_t[7];
  22 
  23 struct core_reloc_mods_substruct {
  24         int x;
  25         int y;
  26 };
  27 
  28 typedef struct {
  29         int x;
  30         int y;
  31 } core_reloc_mods_substruct_t;
  32 
  33 struct core_reloc_mods {
  34         int a;
  35         int_t b;
  36         char *c;
  37         char_ptr_t d;
  38         int e[3];
  39         arr_t f;
  40         struct core_reloc_mods_substruct g;
  41         core_reloc_mods_substruct_t h;
  42 };
  43 
  44 SEC("raw_tracepoint/sys_enter")
  45 int test_core_mods(void *ctx)
  46 {
  47         struct core_reloc_mods *in = (void *)&data.in;
  48         struct core_reloc_mods_output *out = (void *)&data.out;
  49 
  50         if (BPF_CORE_READ(&out->a, &in->a) ||
  51             BPF_CORE_READ(&out->b, &in->b) ||
  52             BPF_CORE_READ(&out->c, &in->c) ||
  53             BPF_CORE_READ(&out->d, &in->d) ||
  54             BPF_CORE_READ(&out->e, &in->e[2]) ||
  55             BPF_CORE_READ(&out->f, &in->f[1]) ||
  56             BPF_CORE_READ(&out->g, &in->g.x) ||
  57             BPF_CORE_READ(&out->h, &in->h.y))
  58                 return 1;
  59 
  60         return 0;
  61 }
  62