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

   1 // SPDX-License-Identifier: GPL-2.0
   2
   3 #include <test_progs.h>
   4 #include "bad_struct_ops.skel.h"
   5 #include "bad_struct_ops2.skel.h"
   6
   7 static void invalid_prog_reuse(void)
   8 {
   9         struct bad_struct_ops *skel;
  10         char *log = NULL;
  11         int err;
  12
  13         skel = bad_struct_ops__open();
  14         if (!ASSERT_OK_PTR(skel, "bad_struct_ops__open"))
  15                 return;
  16
  17         if (start_libbpf_log_capture())
  18                 goto cleanup;
  19
  20         err = bad_struct_ops__load(skel);
  21         log = stop_libbpf_log_capture();
  22         ASSERT_ERR(err, "bad_struct_ops__load should fail");
  23         ASSERT_HAS_SUBSTR(log,
  24                 "struct_ops init_kern testmod_2 func ptr test_1: invalid reuse of prog test_1",
  25                 "expected init_kern message");
  26
  27 cleanup:
  28         free(log);
  29         bad_struct_ops__destroy(skel);
  30 }
  31
  32 static void unused_program(void)
  33 {
  34         struct bad_struct_ops2 *skel;
  35         char *log = NULL;
  36         int err;
  37
  38         skel = bad_struct_ops2__open();
  39         if (!ASSERT_OK_PTR(skel, "bad_struct_ops2__open"))
  40                 return;
  41
  42         /* struct_ops programs not referenced from any maps are open
  43          * with autoload set to true.
  44          */
  45         ASSERT_TRUE(bpf_program__autoload(skel->progs.foo), "foo autoload == true");
  46
  47         if (start_libbpf_log_capture())
  48                 goto cleanup;
  49
  50         err = bad_struct_ops2__load(skel);
  51         ASSERT_ERR(err, "bad_struct_ops2__load should fail");
  52         log = stop_libbpf_log_capture();
  53         ASSERT_HAS_SUBSTR(log, "prog 'foo': failed to load",
  54                           "message about 'foo' failing to load");
  55
  56 cleanup:
  57         free(log);
  58         bad_struct_ops2__destroy(skel);
  59 }
  60
  61 void test_bad_struct_ops(void)
  62 {
  63         if (test__start_subtest("invalid_prog_reuse"))
  64                 invalid_prog_reuse();
  65         if (test__start_subtest("unused_program"))
  66                 unused_program();
  67 }