[mirror_ubuntu-hirsute-kernel.git] / include / uapi / linux / minix_fs.h

/* 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
Commit	Line	Data
6f52b16c	1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
1da177e4 LT	2	#ifndef _LINUX_MINIX_FS_H
	3	#define _LINUX_MINIX_FS_H
	4
4b7ae342	5	#include <linux/types.h>
e18fa700 JG	6	#include <linux/magic.h>
e18fa700 JG	7
1da177e4 LT	8	/*
	9	* The minix filesystem constants/structures
	10	*/
	11
	12	/*
	13	* Thanks to Kees J Bot for sending me the definitions of the new
	14	* minix filesystem (aka V2) with bigger inodes and 32-bit block
	15	* pointers.
	16	*/
	17
	18	#define MINIX_ROOT_INO 1
	19
	20	/* Not the same as the bogus LINK_MAX in <linux/limits.h>. Oh well. */
	21	#define MINIX_LINK_MAX 250
	22	#define MINIX2_LINK_MAX 65530
	23
	24	#define MINIX_I_MAP_SLOTS 8
	25	#define MINIX_Z_MAP_SLOTS 64
1da177e4 LT	26	#define MINIX_VALID_FS 0x0001 /* Clean fs. */
	27	#define MINIX_ERROR_FS 0x0002 /* fs has errors. */
	28
	29	#define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode)))
1da177e4 LT	30
	31	/*
	32	* This is the original minix inode layout on disk.
	33	* Note the 8-bit gid and atime and ctime.
	34	*/
	35	struct minix_inode {
	36	__u16 i_mode;
	37	__u16 i_uid;
	38	__u32 i_size;
	39	__u32 i_time;
	40	__u8 i_gid;
	41	__u8 i_nlinks;
	42	__u16 i_zone[9];
	43	};
	44
	45	/*
	46	* The new minix inode has all the time entries, as well as
	47	* long block numbers and a third indirect block (7+1+1+1
	48	* instead of 7+1+1). Also, some previously 8-bit values are
	49	* now 16-bit. The inode is now 64 bytes instead of 32.
	50	*/
	51	struct minix2_inode {
	52	__u16 i_mode;
	53	__u16 i_nlinks;
	54	__u16 i_uid;
	55	__u16 i_gid;
	56	__u32 i_size;
	57	__u32 i_atime;
	58	__u32 i_mtime;
	59	__u32 i_ctime;
	60	__u32 i_zone[10];
	61	};
	62
	63	/*
	64	* minix super-block data on disk
	65	*/
	66	struct minix_super_block {
	67	__u16 s_ninodes;
	68	__u16 s_nzones;
	69	__u16 s_imap_blocks;
	70	__u16 s_zmap_blocks;
	71	__u16 s_firstdatazone;
	72	__u16 s_log_zone_size;
	73	__u32 s_max_size;
	74	__u16 s_magic;
	75	__u16 s_state;
	76	__u32 s_zones;
	77	};
	78
939b00df AB	79	/*
	80	* V3 minix super-block data on disk
	81	*/
	82	struct minix3_super_block {
f4fa27c1	83	__u32 s_ninodes;
939b00df AB	84	__u16 s_pad0;
	85	__u16 s_imap_blocks;
	86	__u16 s_zmap_blocks;
	87	__u16 s_firstdatazone;
	88	__u16 s_log_zone_size;
	89	__u16 s_pad1;
	90	__u32 s_max_size;
	91	__u32 s_zones;
	92	__u16 s_magic;
	93	__u16 s_pad2;
	94	__u16 s_blocksize;
	95	__u8 s_disk_version;
	96	};
	97
1da177e4 LT	98	struct minix_dir_entry {
	99	__u16 inode;
	100	char name[0];
	101	};
	102
939b00df AB	103	struct minix3_dir_entry {
	104	__u32 inode;
	105	char name[0];
	106	};
1da177e4	107	#endif