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