48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2014 The Android Open Source Project
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <errno.h>
|
||
|
|
|
||
|
|
#include "ext4_sb.h"
|
||
|
|
|
||
|
|
int ext4_parse_sb(struct ext4_super_block *sb, struct fs_info *info)
|
||
|
|
{
|
||
|
|
uint64_t len_blocks;
|
||
|
|
|
||
|
|
if (sb->s_magic != EXT4_SUPER_MAGIC)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
if ((sb->s_state & EXT4_VALID_FS) != EXT4_VALID_FS)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
info->block_size = 1024 << sb->s_log_block_size;
|
||
|
|
info->blocks_per_group = sb->s_blocks_per_group;
|
||
|
|
info->inodes_per_group = sb->s_inodes_per_group;
|
||
|
|
info->inode_size = sb->s_inode_size;
|
||
|
|
info->inodes = sb->s_inodes_count;
|
||
|
|
info->feat_ro_compat = sb->s_feature_ro_compat;
|
||
|
|
info->feat_compat = sb->s_feature_compat;
|
||
|
|
info->feat_incompat = sb->s_feature_incompat;
|
||
|
|
info->bg_desc_reserve_blocks = sb->s_reserved_gdt_blocks;
|
||
|
|
info->label = sb->s_volume_name;
|
||
|
|
|
||
|
|
len_blocks = ((uint64_t)sb->s_blocks_count_hi << 32) +
|
||
|
|
sb->s_blocks_count_lo;
|
||
|
|
info->len = (uint64_t)info->block_size * len_blocks;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|