tools/testing/selftests/bpf/prog_tests/fexit_test.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright (c) 2019 Facebook */
   3 #include <test_progs.h>
   4 #include "fexit_test.lskel.h"
   5
   6 static int fexit_test(struct fexit_test_lskel *fexit_skel)
   7 {
   8         int err, prog_fd, i;
   9         __u32 duration = 0, retval;
  10         int link_fd;
  11         __u64 *result;
  12
  13         err = fexit_test_lskel__attach(fexit_skel);
  14         if (!ASSERT_OK(err, "fexit_attach"))
  15                 return err;
  16
  17         /* Check that already linked program can't be attached again. */
  18         link_fd = fexit_test_lskel__test1__attach(fexit_skel);
  19         if (!ASSERT_LT(link_fd, 0, "fexit_attach_link"))
  20                 return -1;
  21
  22         prog_fd = fexit_skel->progs.test1.prog_fd;
  23         err = bpf_prog_test_run(prog_fd, 1, NULL, 0,
  24                                 NULL, NULL, &retval, &duration);
  25         ASSERT_OK(err, "test_run");
  26         ASSERT_EQ(retval, 0, "test_run");
  27
  28         result = (__u64 *)fexit_skel->bss;
  29         for (i = 0; i < sizeof(*fexit_skel->bss) / sizeof(__u64); i++) {
  30                 if (!ASSERT_EQ(result[i], 1, "fexit_result"))
  31                         return -1;
  32         }
  33
  34         fexit_test_lskel__detach(fexit_skel);
  35
  36         /* zero results for re-attach test */
  37         memset(fexit_skel->bss, 0, sizeof(*fexit_skel->bss));
  38         return 0;
  39 }
  40
  41 void test_fexit_test(void)
  42 {
  43         struct fexit_test_lskel *fexit_skel = NULL;
  44         int err;
  45
  46         fexit_skel = fexit_test_lskel__open_and_load();
  47         if (!ASSERT_OK_PTR(fexit_skel, "fexit_skel_load"))
  48                 goto cleanup;
  49
  50         err = fexit_test(fexit_skel);
  51         if (!ASSERT_OK(err, "fexit_first_attach"))
  52                 goto cleanup;
  53
  54         err = fexit_test(fexit_skel);
  55         ASSERT_OK(err, "fexit_second_attach");
  56
  57 cleanup:
  58         fexit_test_lskel__destroy(fexit_skel);
  59 }