[GitHub/mt8127/android_kernel_alcatel_ttab.git] / fs / xfs / xfs_types.h

/*
 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#ifndef __XFS_TYPES_H__
#define	__XFS_TYPES_H__

#ifdef __KERNEL__

/*
 * Additional type declarations for XFS
 */
typedef signed char		__int8_t;
typedef unsigned char		__uint8_t;
typedef signed short int	__int16_t;
typedef unsigned short int	__uint16_t;
typedef signed int		__int32_t;
typedef unsigned int		__uint32_t;
typedef signed long long int	__int64_t;
typedef unsigned long long int	__uint64_t;

typedef __uint32_t		prid_t;		/* project ID */
typedef __uint32_t		inst_t;		/* an instruction */

typedef __s64			xfs_off_t;	/* <file offset> type */
typedef unsigned long long	xfs_ino_t;	/* <inode> type */
typedef __s64			xfs_daddr_t;	/* <disk address> type */
typedef char *			xfs_caddr_t;	/* <core address> type */
typedef __u32			xfs_dev_t;
typedef __u32			xfs_nlink_t;

/* __psint_t is the same size as a pointer */
#if (BITS_PER_LONG == 32)
typedef __int32_t __psint_t;
typedef __uint32_t __psunsigned_t;
#elif (BITS_PER_LONG == 64)
typedef __int64_t __psint_t;
typedef __uint64_t __psunsigned_t;
#else
#error BITS_PER_LONG must be 32 or 64
#endif

#endif	/* __KERNEL__ */

typedef __uint32_t	xfs_agblock_t;	/* blockno in alloc. group */
typedef	__uint32_t	xfs_agino_t;	/* inode # within allocation grp */
typedef	__uint32_t	xfs_extlen_t;	/* extent length in blocks */
typedef	__uint32_t	xfs_agnumber_t;	/* allocation group number */
typedef __int32_t	xfs_extnum_t;	/* # of extents in a file */
typedef __int16_t	xfs_aextnum_t;	/* # extents in an attribute fork */
typedef	__int64_t	xfs_fsize_t;	/* bytes in a file */
typedef __uint64_t	xfs_ufsize_t;	/* unsigned bytes in a file */

typedef	__int32_t	xfs_suminfo_t;	/* type of bitmap summary info */
typedef	__int32_t	xfs_rtword_t;	/* word type for bitmap manipulations */

typedef	__int64_t	xfs_lsn_t;	/* log sequence number */
typedef	__int32_t	xfs_tid_t;	/* transaction identifier */

typedef	__uint32_t	xfs_dablk_t;	/* dir/attr block number (in file) */
typedef	__uint32_t	xfs_dahash_t;	/* dir/attr hash value */

/*
 * These types are 64 bits on disk but are either 32 or 64 bits in memory.
 * Disk based types:
 */
typedef __uint64_t	xfs_dfsbno_t;	/* blockno in filesystem (agno|agbno) */
typedef __uint64_t	xfs_drfsbno_t;	/* blockno in filesystem (raw) */
typedef	__uint64_t	xfs_drtbno_t;	/* extent (block) in realtime area */
typedef	__uint64_t	xfs_dfiloff_t;	/* block number in a file */
typedef	__uint64_t	xfs_dfilblks_t;	/* number of blocks in a file */

/*
 * Memory based types are conditional.
 */
#if XFS_BIG_BLKNOS
typedef	__uint64_t	xfs_fsblock_t;	/* blockno in filesystem (agno|agbno) */
typedef __uint64_t	xfs_rfsblock_t;	/* blockno in filesystem (raw) */
typedef __uint64_t	xfs_rtblock_t;	/* extent (block) in realtime area */
typedef	__int64_t	xfs_srtblock_t;	/* signed version of xfs_rtblock_t */
#else
typedef	__uint32_t	xfs_fsblock_t;	/* blockno in filesystem (agno|agbno) */
typedef __uint32_t	xfs_rfsblock_t;	/* blockno in filesystem (raw) */
typedef __uint32_t	xfs_rtblock_t;	/* extent (block) in realtime area */
typedef	__int32_t	xfs_srtblock_t;	/* signed version of xfs_rtblock_t */
#endif
typedef __uint64_t	xfs_fileoff_t;	/* block number in a file */
typedef __int64_t	xfs_sfiloff_t;	/* signed block number in a file */
typedef __uint64_t	xfs_filblks_t;	/* number of blocks in a file */


/*
 * Null values for the types.
 */
#define	NULLDFSBNO	((xfs_dfsbno_t)-1)
#define	NULLDRFSBNO	((xfs_drfsbno_t)-1)
#define	NULLDRTBNO	((xfs_drtbno_t)-1)
#define	NULLDFILOFF	((xfs_dfiloff_t)-1)

#define	NULLFSBLOCK	((xfs_fsblock_t)-1)
#define	NULLRFSBLOCK	((xfs_rfsblock_t)-1)
#define	NULLRTBLOCK	((xfs_rtblock_t)-1)
#define	NULLFILEOFF	((xfs_fileoff_t)-1)

#define	NULLAGBLOCK	((xfs_agblock_t)-1)
#define	NULLAGNUMBER	((xfs_agnumber_t)-1)
#define	NULLEXTNUM	((xfs_extnum_t)-1)

#define NULLCOMMITLSN	((xfs_lsn_t)-1)

#define	NULLFSINO	((xfs_ino_t)-1)
#define	NULLAGINO	((xfs_agino_t)-1)

/*
 * Max values for extlen, extnum, aextnum.
 */
#define	MAXEXTLEN	((xfs_extlen_t)0x001fffff)	/* 21 bits */
#define	MAXEXTNUM	((xfs_extnum_t)0x7fffffff)	/* signed int */
#define	MAXAEXTNUM	((xfs_aextnum_t)0x7fff)		/* signed short */

/*
 * Minimum and maximum blocksize and sectorsize.
 * The blocksize upper limit is pretty much arbitrary.
 * The sectorsize upper limit is due to sizeof(sb_sectsize).
 */
#define XFS_MIN_BLOCKSIZE_LOG	9	/* i.e. 512 bytes */
#define XFS_MAX_BLOCKSIZE_LOG	16	/* i.e. 65536 bytes */
#define XFS_MIN_BLOCKSIZE	(1 << XFS_MIN_BLOCKSIZE_LOG)
#define XFS_MAX_BLOCKSIZE	(1 << XFS_MAX_BLOCKSIZE_LOG)
#define XFS_MIN_SECTORSIZE_LOG	9	/* i.e. 512 bytes */
#define XFS_MAX_SECTORSIZE_LOG	15	/* i.e. 32768 bytes */
#define XFS_MIN_SECTORSIZE	(1 << XFS_MIN_SECTORSIZE_LOG)
#define XFS_MAX_SECTORSIZE	(1 << XFS_MAX_SECTORSIZE_LOG)

/*
 * Min numbers of data/attr fork btree root pointers.
 */
#define MINDBTPTRS	3
#define MINABTPTRS	2

/*
 * MAXNAMELEN is the length (including the terminating null) of
 * the longest permissible file (component) name.
 */
#define MAXNAMELEN	256

typedef enum {
	XFS_LOOKUP_EQi, XFS_LOOKUP_LEi, XFS_LOOKUP_GEi
} xfs_lookup_t;

typedef enum {
	XFS_BTNUM_BNOi, XFS_BTNUM_CNTi, XFS_BTNUM_BMAPi, XFS_BTNUM_INOi,
	XFS_BTNUM_MAX
} xfs_btnum_t;

struct xfs_name {
	const unsigned char	*name;
	int			len;
};

#endif	/* __XFS_TYPES_H__ */
Commit	Line	Data
1da177e4	1	/*
7b718769 NS	2	* Copyright (c) 2000-2005 Silicon Graphics, Inc.
7b718769 NS	3	* All Rights Reserved.
1da177e4	4	*
7b718769 NS	5	* This program is free software; you can redistribute it and/or
7b718769 NS	6	* modify it under the terms of the GNU General Public License as
1da177e4 LT	7	* published by the Free Software Foundation.
1da177e4 LT	8	*
7b718769 NS	9	* This program is distributed in the hope that it would be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
1da177e4	13	*
7b718769 NS	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write the Free Software Foundation,
	16	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
1da177e4 LT	17	*/
	18	#ifndef __XFS_TYPES_H__
	19	#define __XFS_TYPES_H__
	20
	21	#ifdef __KERNEL__
	22
1da177e4 LT	23	/*
	24	* Additional type declarations for XFS
	25	*/
	26	typedef signed char __int8_t;
	27	typedef unsigned char __uint8_t;
	28	typedef signed short int __int16_t;
	29	typedef unsigned short int __uint16_t;
	30	typedef signed int __int32_t;
	31	typedef unsigned int __uint32_t;
	32	typedef signed long long int __int64_t;
	33	typedef unsigned long long int __uint64_t;
	34
b74e2159	35	typedef __uint32_t prid_t; /* project ID */
1da177e4 LT	36	typedef __uint32_t inst_t; /* an instruction */
	37
	38	typedef __s64 xfs_off_t; /* <file offset> type */
058652a3	39	typedef unsigned long long xfs_ino_t; /* <inode> type */
1da177e4 LT	40	typedef __s64 xfs_daddr_t; /* <disk address> type */
	41	typedef char * xfs_caddr_t; /* <core address> type */
	42	typedef __u32 xfs_dev_t;
31b084ae	43	typedef __u32 xfs_nlink_t;
1da177e4 LT	44
	45	/* __psint_t is the same size as a pointer */
	46	#if (BITS_PER_LONG == 32)
	47	typedef __int32_t __psint_t;
	48	typedef __uint32_t __psunsigned_t;
	49	#elif (BITS_PER_LONG == 64)
	50	typedef __int64_t __psint_t;
	51	typedef __uint64_t __psunsigned_t;
	52	#else
	53	#error BITS_PER_LONG must be 32 or 64
	54	#endif
	55
	56	#endif /* __KERNEL__ */
	57
	58	typedef __uint32_t xfs_agblock_t; /* blockno in alloc. group */
60a34607	59	typedef __uint32_t xfs_agino_t; /* inode # within allocation grp */
1da177e4 LT	60	typedef __uint32_t xfs_extlen_t; /* extent length in blocks */
	61	typedef __uint32_t xfs_agnumber_t; /* allocation group number */
	62	typedef __int32_t xfs_extnum_t; /* # of extents in a file */
	63	typedef __int16_t xfs_aextnum_t; /* # extents in an attribute fork */
	64	typedef __int64_t xfs_fsize_t; /* bytes in a file */
	65	typedef __uint64_t xfs_ufsize_t; /* unsigned bytes in a file */
	66
	67	typedef __int32_t xfs_suminfo_t; /* type of bitmap summary info */
	68	typedef __int32_t xfs_rtword_t; /* word type for bitmap manipulations */
	69
	70	typedef __int64_t xfs_lsn_t; /* log sequence number */
	71	typedef __int32_t xfs_tid_t; /* transaction identifier */
	72
	73	typedef __uint32_t xfs_dablk_t; /* dir/attr block number (in file) */
	74	typedef __uint32_t xfs_dahash_t; /* dir/attr hash value */
	75
1da177e4 LT	76	/*
	77	* These types are 64 bits on disk but are either 32 or 64 bits in memory.
	78	* Disk based types:
	79	*/
	80	typedef __uint64_t xfs_dfsbno_t; /* blockno in filesystem (agno\|agbno) */
	81	typedef __uint64_t xfs_drfsbno_t; /* blockno in filesystem (raw) */
	82	typedef __uint64_t xfs_drtbno_t; /* extent (block) in realtime area */
	83	typedef __uint64_t xfs_dfiloff_t; /* block number in a file */
	84	typedef __uint64_t xfs_dfilblks_t; /* number of blocks in a file */
	85
	86	/*
	87	* Memory based types are conditional.
	88	*/
	89	#if XFS_BIG_BLKNOS
	90	typedef __uint64_t xfs_fsblock_t; /* blockno in filesystem (agno\|agbno) */
	91	typedef __uint64_t xfs_rfsblock_t; /* blockno in filesystem (raw) */
	92	typedef __uint64_t xfs_rtblock_t; /* extent (block) in realtime area */
	93	typedef __int64_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */
	94	#else
	95	typedef __uint32_t xfs_fsblock_t; /* blockno in filesystem (agno\|agbno) */
	96	typedef __uint32_t xfs_rfsblock_t; /* blockno in filesystem (raw) */
	97	typedef __uint32_t xfs_rtblock_t; /* extent (block) in realtime area */
	98	typedef __int32_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */
	99	#endif
	100	typedef __uint64_t xfs_fileoff_t; /* block number in a file */
	101	typedef __int64_t xfs_sfiloff_t; /* signed block number in a file */
	102	typedef __uint64_t xfs_filblks_t; /* number of blocks in a file */
	103
60a34607	104
1da177e4 LT	105	/*
	106	* Null values for the types.
	107	*/
	108	#define NULLDFSBNO ((xfs_dfsbno_t)-1)
	109	#define NULLDRFSBNO ((xfs_drfsbno_t)-1)
	110	#define NULLDRTBNO ((xfs_drtbno_t)-1)
	111	#define NULLDFILOFF ((xfs_dfiloff_t)-1)
	112
	113	#define NULLFSBLOCK ((xfs_fsblock_t)-1)
	114	#define NULLRFSBLOCK ((xfs_rfsblock_t)-1)
	115	#define NULLRTBLOCK ((xfs_rtblock_t)-1)
	116	#define NULLFILEOFF ((xfs_fileoff_t)-1)
	117
	118	#define NULLAGBLOCK ((xfs_agblock_t)-1)
	119	#define NULLAGNUMBER ((xfs_agnumber_t)-1)
	120	#define NULLEXTNUM ((xfs_extnum_t)-1)
	121
	122	#define NULLCOMMITLSN ((xfs_lsn_t)-1)
	123
60a34607 DC	124	#define NULLFSINO ((xfs_ino_t)-1)
	125	#define NULLAGINO ((xfs_agino_t)-1)
	126
1da177e4 LT	127	/*
	128	* Max values for extlen, extnum, aextnum.
	129	*/
	130	#define MAXEXTLEN ((xfs_extlen_t)0x001fffff) /* 21 bits */
	131	#define MAXEXTNUM ((xfs_extnum_t)0x7fffffff) /* signed int */
	132	#define MAXAEXTNUM ((xfs_aextnum_t)0x7fff) /* signed short */
	133
77c1a08f DC	134	/*
	135	* Minimum and maximum blocksize and sectorsize.
	136	* The blocksize upper limit is pretty much arbitrary.
	137	* The sectorsize upper limit is due to sizeof(sb_sectsize).
	138	*/
	139	#define XFS_MIN_BLOCKSIZE_LOG 9 /* i.e. 512 bytes */
	140	#define XFS_MAX_BLOCKSIZE_LOG 16 /* i.e. 65536 bytes */
	141	#define XFS_MIN_BLOCKSIZE (1 << XFS_MIN_BLOCKSIZE_LOG)
	142	#define XFS_MAX_BLOCKSIZE (1 << XFS_MAX_BLOCKSIZE_LOG)
	143	#define XFS_MIN_SECTORSIZE_LOG 9 /* i.e. 512 bytes */
	144	#define XFS_MAX_SECTORSIZE_LOG 15 /* i.e. 32768 bytes */
	145	#define XFS_MIN_SECTORSIZE (1 << XFS_MIN_SECTORSIZE_LOG)
	146	#define XFS_MAX_SECTORSIZE (1 << XFS_MAX_SECTORSIZE_LOG)
	147
d8cc890d NS	148	/*
	149	* Min numbers of data/attr fork btree root pointers.
	150	*/
	151	#define MINDBTPTRS 3
	152	#define MINABTPTRS 2
	153
1da177e4 LT	154	/*
	155	* MAXNAMELEN is the length (including the terminating null) of
	156	* the longest permissible file (component) name.
	157	*/
	158	#define MAXNAMELEN 256
	159
1da177e4 LT	160	typedef enum {
	161	XFS_LOOKUP_EQi, XFS_LOOKUP_LEi, XFS_LOOKUP_GEi
	162	} xfs_lookup_t;
	163
	164	typedef enum {
	165	XFS_BTNUM_BNOi, XFS_BTNUM_CNTi, XFS_BTNUM_BMAPi, XFS_BTNUM_INOi,
	166	XFS_BTNUM_MAX
	167	} xfs_btnum_t;
	168
556b8b16	169	struct xfs_name {
e2bcd936 DC	170	const unsigned char *name;
e2bcd936 DC	171	int len;
556b8b16 BN	172	};
556b8b16 BN	173
1da177e4	174	#endif /* __XFS_TYPES_H__ */