Remove references to O_BINARY
[project/make_ext4fs.git] / ext4_sb.c
1 /*
2  * Copyright (C) 2014 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16
17 #include <errno.h>
18
19 #include "ext4_sb.h"
20
21 int ext4_parse_sb(struct ext4_super_block *sb, struct fs_info *info)
22 {
23         uint64_t len_blocks;
24
25         if (sb->s_magic != EXT4_SUPER_MAGIC)
26                 return -EINVAL;
27
28         if ((sb->s_state & EXT4_VALID_FS) != EXT4_VALID_FS)
29                 return -EINVAL;
30
31         info->block_size = 1024 << sb->s_log_block_size;
32         info->blocks_per_group = sb->s_blocks_per_group;
33         info->inodes_per_group = sb->s_inodes_per_group;
34         info->inode_size = sb->s_inode_size;
35         info->inodes = sb->s_inodes_count;
36         info->feat_ro_compat = sb->s_feature_ro_compat;
37         info->feat_compat = sb->s_feature_compat;
38         info->feat_incompat = sb->s_feature_incompat;
39         info->bg_desc_reserve_blocks = sb->s_reserved_gdt_blocks;
40         info->label = sb->s_volume_name;
41
42         len_blocks = ((uint64_t)sb->s_blocks_count_hi << 32) +
43                 sb->s_blocks_count_lo;
44         info->len = (uint64_t)info->block_size * len_blocks;
45
46         return 0;
47 }