[net-next-2.6.git] / include / linux / minix_fs.h

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