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_funcs.skel.h"
   7
   8void test_linked_funcs(void)
   9{
  10        int err;
  11        struct linked_funcs *skel;
  12
  13        skel = linked_funcs__open();
  14        if (!ASSERT_OK_PTR(skel, "skel_open"))
  15                return;
  16
  17        skel->rodata->my_tid = syscall(SYS_gettid);
  18        skel->bss->syscall_id = SYS_getpgid;
  19
  20        err = linked_funcs__load(skel);
  21        if (!ASSERT_OK(err, "skel_load"))
  22                goto cleanup;
  23
  24        err = linked_funcs__attach(skel);
  25        if (!ASSERT_OK(err, "skel_attach"))
  26                goto cleanup;
  27
  28        /* trigger */
  29        syscall(SYS_getpgid);
  30
  31        ASSERT_EQ(skel->bss->output_val1, 2000 + 2000, "output_val1");
  32        ASSERT_EQ(skel->bss->output_ctx1, SYS_getpgid, "output_ctx1");
  33        ASSERT_EQ(skel->bss->output_weak1, 42, "output_weak1");
  34
  35        ASSERT_EQ(skel->bss->output_val2, 2 * 1000 + 2 * (2 * 1000), "output_val2");
  36        ASSERT_EQ(skel->bss->output_ctx2, SYS_getpgid, "output_ctx2");
  37        /* output_weak2 should never be updated */
  38        ASSERT_EQ(skel->bss->output_weak2, 0, "output_weak2");
  39
  40cleanup:
  41        linked_funcs__destroy(skel);
  42}
  43