1  /*
2   * Copyright (c) 2024-2024 Huawei Device Co., Ltd.
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  
16  #ifndef EROFS_H
17  #define EROFS_H
18  
19  #include <linux/types.h>
20  
21  #define EROFS_SUPER_MAGIC  0xE0F5E1E2
22  #define EROFS_SUPER_BLOCK_START_POSITION 1024
23  
24  struct erofs_super_block {
25      __le32 magic;
26      __le32 checksum;
27      __le32 feature_compat;
28      __u8 blkszbits;
29      __u8 reserved;
30  
31      __le16 root_nid;
32      __le64 inos;
33  
34      __le64 build_time;
35      __le32 build_time_nsec;
36      __le32 blocks;
37      __le32 meta_blkaddr;
38      __le32 xattr_blkaddr;
39      __u8 uuid[16];
40      __u8 volume_name[16];
41      __le32 feature_incompat;
42      __u8 reserved2[44];
43  } __attribute((packed));  /* 128 byte */
44  
45  #endif