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

#ifndef _LINUX_MINIX_FS_H
#define _LINUX_MINIX_FS_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_SUPER_MAGIC	0x137F		/* original minix fs */
#define MINIX_SUPER_MAGIC2	0x138F		/* minix fs, 30 char names */
#define MINIX2_SUPER_MAGIC	0x2468		/* minix V2 fs */
#define MINIX2_SUPER_MAGIC2	0x2478		/* minix V2 fs, 30 char names */
#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)))
#define MINIX2_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix2_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;
};

struct minix_dir_entry {
	__u16 inode;
	char name[0];
};

#endif
Commit	Line	Data
1da177e4 LT	1	#ifndef _LINUX_MINIX_FS_H
	2	#define _LINUX_MINIX_FS_H
	3
	4	/*
	5	* The minix filesystem constants/structures
	6	*/
	7
	8	/*
	9	* Thanks to Kees J Bot for sending me the definitions of the new
	10	* minix filesystem (aka V2) with bigger inodes and 32-bit block
	11	* pointers.
	12	*/
	13
	14	#define MINIX_ROOT_INO 1
	15
	16	/* Not the same as the bogus LINK_MAX in <linux/limits.h>. Oh well. */
	17	#define MINIX_LINK_MAX 250
	18	#define MINIX2_LINK_MAX 65530
	19
	20	#define MINIX_I_MAP_SLOTS 8
	21	#define MINIX_Z_MAP_SLOTS 64
	22	#define MINIX_SUPER_MAGIC 0x137F /* original minix fs */
	23	#define MINIX_SUPER_MAGIC2 0x138F /* minix fs, 30 char names */
	24	#define MINIX2_SUPER_MAGIC 0x2468 /* minix V2 fs */
	25	#define MINIX2_SUPER_MAGIC2 0x2478 /* minix V2 fs, 30 char names */
	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)))
	30	#define MINIX2_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix2_inode)))
	31
	32	/*
	33	* This is the original minix inode layout on disk.
	34	* Note the 8-bit gid and atime and ctime.
	35	*/
	36	struct minix_inode {
	37	__u16 i_mode;
	38	__u16 i_uid;
	39	__u32 i_size;
	40	__u32 i_time;
	41	__u8 i_gid;
	42	__u8 i_nlinks;
	43	__u16 i_zone[9];
	44	};
	45
	46	/*
	47	* The new minix inode has all the time entries, as well as
	48	* long block numbers and a third indirect block (7+1+1+1
	49	* instead of 7+1+1). Also, some previously 8-bit values are
	50	* now 16-bit. The inode is now 64 bytes instead of 32.
	51	*/
	52	struct minix2_inode {
	53	__u16 i_mode;
	54	__u16 i_nlinks;
	55	__u16 i_uid;
	56	__u16 i_gid;
	57	__u32 i_size;
	58	__u32 i_atime;
	59	__u32 i_mtime;
	60	__u32 i_ctime;
	61	__u32 i_zone[10];
	62	};
	63
	64	/*
65	* minix super-block data on disk
66	*/
67	struct minix_super_block {
68	__u16 s_ninodes;
69	__u16 s_nzones;
70	__u16 s_imap_blocks;
71	__u16 s_zmap_blocks;
72	__u16 s_firstdatazone;
73	__u16 s_log_zone_size;
74	__u32 s_max_size;
75	__u16 s_magic;
76	__u16 s_state;
77	__u32 s_zones;
78	};
79
80	struct minix_dir_entry {
81	__u16 inode;
82	char name[0];
83	};
84
85	#endif