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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _LINUX_MINIX_FS_H
#define _LINUX_MINIX_FS_H
#include <linux/types.h>
#include <linux/magic.h>
/*
* The minix filesystem constants/structures
*/
/*
* Thanks to Kees J Bot for sending me the definitions of the new
* minix filesystem (aka V2) with bigger inodes and 32-bit block
* pointers.
*/
#define MINIX_ROOT_INO 1
/* Not the same as the bogus LINK_MAX in <linux/limits.h>. Oh well. */
#define MINIX_LINK_MAX 250
#define MINIX2_LINK_MAX 65530
#define MINIX_I_MAP_SLOTS 8
#define MINIX_Z_MAP_SLOTS 64
#define MINIX_VALID_FS 0x0001 /* Clean fs. */
#define MINIX_ERROR_FS 0x0002 /* fs has errors. */
#define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode)))
/*
* This is the original minix inode layout on disk.
* Note the 8-bit gid and atime and ctime.
*/
struct minix_inode {
__u16 i_mode;
__u16 i_uid;
__u32 i_size;
__u32 i_time;
__u8 i_gid;
__u8 i_nlinks;
__u16 i_zone[9];
};
/*
* The new minix inode has all the time entries, as well as
* long block numbers and a third indirect block (7+1+1+1
* instead of 7+1+1). Also, some previously 8-bit values are
* now 16-bit. The inode is now 64 bytes instead of 32.
*/
struct minix2_inode {
__u16 i_mode;
__u16 i_nlinks;
__u16 i_uid;
__u16 i_gid;
__u32 i_size;
__u32 i_atime;
__u32 i_mtime;
__u32 i_ctime;
__u32 i_zone[10];
};
/*
* minix super-block data on disk
*/
struct minix_super_block {
__u16 s_ninodes;
__u16 s_nzones;
__u16 s_imap_blocks;
__u16 s_zmap_blocks;
__u16 s_firstdatazone;
__u16 s_log_zone_size;
__u32 s_max_size;
__u16 s_magic;
__u16 s_state;
__u32 s_zones;
};
/*
* V3 minix super-block data on disk
*/
struct minix3_super_block {
__u32 s_ninodes;
__u16 s_pad0;
__u16 s_imap_blocks;
__u16 s_zmap_blocks;
__u16 s_firstdatazone;
__u16 s_log_zone_size;
__u16 s_pad1;
__u32 s_max_size;
__u32 s_zones;
__u16 s_magic;
__u16 s_pad2;
__u16 s_blocksize;
__u8 s_disk_version;
};
struct minix_dir_entry {
__u16 inode;
char name[0];
};
struct minix3_dir_entry {
__u32 inode;
char name[0];
};
#endif