src/udev/net/fuzz-link-parser.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include "fd-util.h"
   4 #include "fs-util.h"
   5 #include "fuzz.h"
   6 #include "link-config.h"
   7 #include "tmpfile-util.h"
   8
   9 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  10         _cleanup_(link_config_ctx_freep) link_config_ctx *ctx = NULL;
  11         _cleanup_(unlink_tempfilep) char filename[] = "/tmp/fuzz-link-config.XXXXXX";
  12         _cleanup_fclose_ FILE *f = NULL;
  13
  14         if (size > 65535)
  15                 return 0;
  16
  17         if (!getenv("SYSTEMD_LOG_LEVEL"))
  18                 log_set_max_level(LOG_CRIT);
  19
  20         assert_se(fmkostemp_safe(filename, "r+", &f) == 0);
  21         if (size != 0)
  22                 assert_se(fwrite(data, size, 1, f) == 1);
  23
  24         fflush(f);
  25         assert_se(link_config_ctx_new(&ctx) >= 0);
  26         (void) link_load_one(ctx, filename);
  27         return 0;
  28 }