2 * Copyright (C) 2014 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
21 int ext4_parse_sb(struct ext4_super_block *sb, struct fs_info *info)
25 if (sb->s_magic != EXT4_SUPER_MAGIC)
28 if ((sb->s_state & EXT4_VALID_FS) != EXT4_VALID_FS)
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;
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;