[linux-2.6-block.git] / include / linux / minix_fs.h

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