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Sources/make_ext4fs/ext4_sb.h

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

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