LXR linux/tools/testing/selftests/bpf/prog_tests/btf

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/* Copyright (c) 2021 Hengqi Chen */
   3
   4#include <test_progs.h>
   5#include <bpf/btf.h>
   6
   7static const char *module_name = "bpf_testmod";
   8static const char *symbol_name = "bpf_testmod_test_read";
   9
  10void test_btf_module()
  11{
  12        struct btf *vmlinux_btf, *module_btf;
  13        __s32 type_id;
  14
  15        if (!env.has_testmod) {
  16                test__skip();
  17                return;
  18        }
  19
  20        vmlinux_btf = btf__load_vmlinux_btf();
  21        if (!ASSERT_OK_PTR(vmlinux_btf, "could not load vmlinux BTF"))
  22                return;
  23
  24        module_btf = btf__load_module_btf(module_name, vmlinux_btf);
  25        if (!ASSERT_OK_PTR(module_btf, "could not load module BTF"))
  26                goto cleanup;
  27
  28        type_id = btf__find_by_name(module_btf, symbol_name);
  29        ASSERT_GT(type_id, 0, "func not found");
  30
  31cleanup:
  32        btf__free(module_btf);
  33        btf__free(vmlinux_btf);
  34}
  35