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

   1// SPDX-License-Identifier: GPL-2.0
   2/* Copyright (c) 2021 Facebook */
   3
   4#include <test_progs.h>
   5#include <sys/syscall.h>
   6#include "linked_vars.skel.h"
   7
   8void test_linked_vars(void)
   9{
  10        int err;
  11        struct linked_vars *skel;
  12
  13        skel = linked_vars__open();
  14        if (!ASSERT_OK_PTR(skel, "skel_open"))
  15                return;
  16
  17        skel->bss->input_bss1 = 1000;
  18        skel->bss->input_bss2 = 2000;
  19        skel->bss->input_bss_weak = 3000;
  20
  21        err = linked_vars__load(skel);
  22        if (!ASSERT_OK(err, "skel_load"))
  23                goto cleanup;
  24
  25        err = linked_vars__attach(skel);
  26        if (!ASSERT_OK(err, "skel_attach"))
  27                goto cleanup;
  28
  29        /* trigger */
  30        syscall(SYS_getpgid);
  31
  32        ASSERT_EQ(skel->bss->output_bss1, 1000 + 2000 + 3000, "output_bss1");
  33        ASSERT_EQ(skel->bss->output_bss2, 1000 + 2000 + 3000, "output_bss2");
  34        /* 10 comes from "winner" input_data_weak in first obj file */
  35        ASSERT_EQ(skel->bss->output_data1, 1 + 2 + 10, "output_bss1");
  36        ASSERT_EQ(skel->bss->output_data2, 1 + 2 + 10, "output_bss2");
  37        /* 100 comes from "winner" input_rodata_weak in first obj file */
  38        ASSERT_EQ(skel->bss->output_rodata1, 11 + 22 + 100, "output_weak1");
  39        ASSERT_EQ(skel->bss->output_rodata2, 11 + 22 + 100, "output_weak2");
  40
  41cleanup:
  42        linked_vars__destroy(skel);
  43}
  44