1 // Copyright 2020 Google LLC
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include <stddef.h>
16 #include <stdint.h>
17 #include <fcntl.h>
18 #include <unistd.h>
19
20 #include "ext2fs/ext2fs.h"
21
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)22 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
23 static const char* fname = "/tmp/ext2_test_file";
24
25 // Write our data to a temp file.
26 int fd = open(fname, O_RDWR|O_CREAT|O_TRUNC);
27 write(fd, data, size);
28 close(fd);
29
30 ext2_filsys fs;
31 errcode_t retval = ext2fs_open(
32 fname,
33 0, 0, 0,
34 unix_io_manager,
35 &fs);
36
37 if (!retval) {
38 retval = ext2fs_check_directory(fs, EXT2_ROOT_INO);
39 ext2fs_close(fs);
40 }
41
42 return 0;
43 }
44