1 files changed, 43 insertions, 0 deletions
diff --git a/tests/fuzz/ext2fs_check_directory_fuzzer.cc b/tests/fuzz/ext2fs_check_directory_fuzzer.cc
new file mode 100644
index 0000000..61cf42f
--- /dev/null
+++ b/tests/fuzz/ext2fs_check_directory_fuzzer.cc
@@ -0,0 +1,43 @@
+// Copyright 2020 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <stddef.h>
+#include <stdint.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "ext2fs/ext2fs.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+  static const char* fname = "/tmp/ext2_test_file";
+
+  // Write our data to a temp file.
+  int fd = open(fname, O_RDWR|O_CREAT|O_TRUNC);
+  write(fd, data, size);
+  close(fd);
+
+  ext2_filsys fs;
+  errcode_t retval = ext2fs_open(
+      fname,
+      EXT2_FLAG_IGNORE_CSUM_ERRORS, 0, 0,
+      unix_io_manager,
+      &fs);
+
+  if (!retval) {
+    retval = ext2fs_check_directory(fs, EXT2_ROOT_INO);
+    ext2fs_close(fs);
+  }
+
+  return 0;
+}