src/tests/fuzz-lxc-cgroup-init.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <stddef.h>
   4 #include <stdint.h>
   5
   6 #include "cgroups/cgroup.h"
   7 #include "conf.h"
   8 #include "confile.h"
   9 #include "lxctest.h"
  10 #include "utils.h"
  11
  12 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  13         int fd = -1;
  14         char tmpf[] = "/tmp/fuzz-lxc-cgroup-init-XXXXXX";
  15         struct lxc_conf *conf = NULL;
  16         int ret;
  17         struct cgroup_ops *ops;
  18
  19         /*
  20          * 100Kb should probably be enough to trigger all the issues
  21          * we're interested in without any timeouts
  22          */
  23         if (size > 102400)
  24                 return 0;
  25
  26         fd = lxc_make_tmpfile(tmpf, false);
  27         lxc_test_assert_abort(fd >= 0);
  28         lxc_write_nointr(fd, data, size);
  29         close(fd);
  30
  31         conf = lxc_conf_init();
  32         lxc_test_assert_abort(conf);
  33
  34         /* Test cgroup_init() with valid config. */
  35         ops = cgroup_init(conf);
  36         cgroup_exit(ops);
  37
  38         ret = lxc_config_read(tmpf, conf, false);
  39         if (ret == 0) {
  40                 /* Test cgroup_init() with likely garbage config. */
  41                 ops = cgroup_init(conf);
  42                 cgroup_exit(ops);
  43         }
  44         lxc_conf_free(conf);
  45
  46         (void) unlink(tmpf);
  47
  48         return 0;
  49 }
  50