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f2fs.h
Go to the documentation of this file.
/*
libparted/fs/f2fs - Flash-Friendly File System
Copyright (C) 2020-2023, 2026 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _F2FS_H
#define _F2FS_H
#define F2FS_MAGIC 0xF2F52010
#define F2FS_MAX_VOLUME_NAME 512
#define F2FS_SB_OFFSET 0x02
struct f2fs_super_block {
uint32_t magic; /* Magic Number */
uint16_t major_ver; /* Major Version */
uint16_t minor_ver; /* Minor Version */
uint32_t log_sectorsize; /* log2 sector size in bytes */
uint32_t log_sectors_per_block; /* log2 # of sectors per block */
uint32_t log_blocksize; /* log2 block size in bytes */
uint32_t log_blocks_per_seg; /* log2 # of blocks per segment */
uint32_t segs_per_sec; /* # of segments per section */
uint32_t secs_per_zone; /* # of sections per zone */
uint32_t checksum_offset; /* checksum offset inside super block */
uint64_t block_count; /* total # of user blocks */
uint32_t section_count; /* total # of sections */
uint32_t segment_count; /* total # of segments */
uint32_t segment_count_ckpt; /* # of segments for checkpoint */
uint32_t segment_count_sit; /* # of segments for SIT */
uint32_t segment_count_nat; /* # of segments for NAT */
uint32_t segment_count_ssa; /* # of segments for SSA */
uint32_t segment_count_main; /* # of segments for main area */
uint32_t segment0_blkaddr; /* start block address of segment 0 */
uint32_t cp_blkaddr; /* start block address of checkpoint */
uint32_t sit_blkaddr; /* start block address of SIT */
uint32_t nat_blkaddr; /* start block address of NAT */
uint32_t ssa_blkaddr; /* start block address of SSA */
uint32_t main_blkaddr; /* start block address of main area */
uint32_t root_ino; /* root inode number */
uint32_t node_ino; /* node inode number */
uint32_t meta_ino; /* meta inode number */
uint8_t uuid[16]; /* 128-bit uuid for volume */
uint16_t volume_name[F2FS_MAX_VOLUME_NAME]; /* volume name */
} __attribute__((packed));
#endif
__attribute__
typedef __attribute__
Definition vtoc.h:80
F2FS_MAX_VOLUME_NAME
#define F2FS_MAX_VOLUME_NAME
Definition f2fs.h:22
f2fs_super_block
Definition f2fs.h:25
f2fs_super_block::root_ino
uint32_t root_ino
Definition f2fs.h:50
f2fs_super_block::segment_count_sit
uint32_t segment_count_sit
Definition f2fs.h:40
f2fs_super_block::segment_count_ckpt
uint32_t segment_count_ckpt
Definition f2fs.h:39
f2fs_super_block::nat_blkaddr
uint32_t nat_blkaddr
Definition f2fs.h:47
f2fs_super_block::block_count
uint64_t block_count
Definition f2fs.h:36
f2fs_super_block::segment_count_nat
uint32_t segment_count_nat
Definition f2fs.h:41
f2fs_super_block::volume_name
uint16_t volume_name[F2FS_MAX_VOLUME_NAME]
Definition f2fs.h:54
f2fs_super_block::cp_blkaddr
uint32_t cp_blkaddr
Definition f2fs.h:45
f2fs_super_block::secs_per_zone
uint32_t secs_per_zone
Definition f2fs.h:34
f2fs_super_block::node_ino
uint32_t node_ino
Definition f2fs.h:51
f2fs_super_block::minor_ver
uint16_t minor_ver
Definition f2fs.h:28
f2fs_super_block::section_count
uint32_t section_count
Definition f2fs.h:37
f2fs_super_block::log_blocksize
uint32_t log_blocksize
Definition f2fs.h:31
f2fs_super_block::sit_blkaddr
uint32_t sit_blkaddr
Definition f2fs.h:46
f2fs_super_block::log_sectorsize
uint32_t log_sectorsize
Definition f2fs.h:29
f2fs_super_block::segment_count_main
uint32_t segment_count_main
Definition f2fs.h:43
f2fs_super_block::log_blocks_per_seg
uint32_t log_blocks_per_seg
Definition f2fs.h:32
f2fs_super_block::ssa_blkaddr
uint32_t ssa_blkaddr
Definition f2fs.h:48
f2fs_super_block::uuid
uint8_t uuid[16]
Definition f2fs.h:53
f2fs_super_block::segs_per_sec
uint32_t segs_per_sec
Definition f2fs.h:33
f2fs_super_block::checksum_offset
uint32_t checksum_offset
Definition f2fs.h:35
f2fs_super_block::segment_count
uint32_t segment_count
Definition f2fs.h:38
f2fs_super_block::segment_count_ssa
uint32_t segment_count_ssa
Definition f2fs.h:42
f2fs_super_block::major_ver
uint16_t major_ver
Definition f2fs.h:27
f2fs_super_block::log_sectors_per_block
uint32_t log_sectors_per_block
Definition f2fs.h:30
f2fs_super_block::meta_ino
uint32_t meta_ino
Definition f2fs.h:52
f2fs_super_block::magic
uint32_t magic
Definition f2fs.h:26
f2fs_super_block::segment0_blkaddr
uint32_t segment0_blkaddr
Definition f2fs.h:44
f2fs_super_block::main_blkaddr
uint32_t main_blkaddr
Definition f2fs.h:49