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 #ifndef _EXT4_UTILS_EXT4_SB_H_ 18 #define _EXT4_UTILS_EXT4_SB_H_ 19 20 #include "ext4_utils/ext4_kernel_headers.h" 21 22 #define EXT4_SUPER_MAGIC 0xEF53 23 24 #ifdef __cplusplus 25 extern "C" { 26 #endif 27 28 #include <stdbool.h> 29 30 struct fs_info { 31 int64_t len; /* If set to 0, ask the block device for the size, 32 * if less than 0, reserve that much space at the 33 * end of the partition, else use the size given. */ 34 uint32_t block_size; 35 uint32_t blocks_per_group; 36 uint32_t flash_erase_block_size; 37 uint32_t flash_logical_block_size; 38 uint32_t inodes_per_group; 39 uint32_t inode_size; 40 uint32_t inodes; 41 uint32_t journal_blocks; 42 uint16_t feat_ro_compat; 43 uint16_t feat_compat; 44 uint16_t feat_incompat; 45 uint32_t bg_desc_reserve_blocks; 46 const char *label; 47 uint8_t no_journal; 48 bool block_device; /* target fd is a block device? */ 49 }; 50 51 int ext4_parse_sb(struct ext4_super_block *sb, struct fs_info *info); 52 53 #ifdef __cplusplus 54 } 55 #endif 56 57 #endif 58