src/core/fuzz-manager-serialize.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <stdio.h>
   4
   5 #include "alloc-util.h"
   6 #include "fd-util.h"
   7 #include "fuzz.h"
   8 #include "manager-serialize.h"
   9 #include "manager.h"
  10 #include "service.h"
  11
  12 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  13         _cleanup_(manager_freep) Manager *m = NULL;
  14         _cleanup_fclose_ FILE *f = NULL, *null = NULL;
  15         _cleanup_fdset_free_ FDSet *fdset = NULL;
  16
  17         if (outside_size_range(size, 0, 65536))
  18                 return 0;
  19
  20         /* We don't want to fill the logs with messages about parse errors.
  21          * Disable most logging if not running standalone. */
  22         if (!getenv("SYSTEMD_LOG_LEVEL")) {
  23                 log_set_max_level(LOG_CRIT);
  24                 log_set_target(LOG_TARGET_NULL);
  25         }
  26
  27         assert_se(manager_new(RUNTIME_SCOPE_SYSTEM, MANAGER_TEST_RUN_MINIMAL, &m) >= 0);
  28         /* Set log overrides as well to make it harder for a serialization file
  29          * to switch log levels/targets during fuzzing */
  30         manager_override_log_level(m, log_get_max_level());
  31         manager_override_log_target(m, log_get_target());
  32         assert_se(null = fopen("/dev/null", "we"));
  33         assert_se(fdset = fdset_new());
  34         assert_se(f = data_to_file(data, size));
  35
  36         (void) manager_deserialize(m, f, fdset);
  37         (void) manager_serialize(m, null, fdset, true);
  38         (void) manager_serialize(m, null, fdset, false);
  39
  40         return 0;
  41 }