f2fs.h

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/*
    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