[deliverable/linux.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__

/*
 * POSIX Extensions
 */
typedef unsigned char		uchar_t;
typedef unsigned short		ushort_t;
typedef unsigned int		uint_t;
typedef unsigned long		ulong_t;

/*
 * 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 enum { B_FALSE,B_TRUE }	boolean_t;
typedef __uint32_t		prid_t;		/* project ID */
typedef __uint32_t		inst_t;		/* an instruction */

typedef __s64			xfs_off_t;	/* <file offset> type */
typedef __u64			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_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 */

typedef __uint16_t	xfs_prid_t;	/* prid_t truncated to 16bits in XFS */

/*
 * 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 */

typedef __uint8_t	xfs_arch_t;	/* architecture of an xfs fs */

/*
 * 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)

/*
 * 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 */

/*
 * 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;

#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
	23	/*
	24	* POSIX Extensions
	25	*/
	26	typedef unsigned char uchar_t;
	27	typedef unsigned short ushort_t;
	28	typedef unsigned int uint_t;
	29	typedef unsigned long ulong_t;
	30
	31	/*
	32	* Additional type declarations for XFS
	33	*/
	34	typedef signed char __int8_t;
	35	typedef unsigned char __uint8_t;
	36	typedef signed short int __int16_t;
	37	typedef unsigned short int __uint16_t;
	38	typedef signed int __int32_t;
	39	typedef unsigned int __uint32_t;
	40	typedef signed long long int __int64_t;
	41	typedef unsigned long long int __uint64_t;
	42
	43	typedef enum { B_FALSE,B_TRUE } boolean_t;
b74e2159	44	typedef __uint32_t prid_t; /* project ID */
1da177e4 LT	45	typedef __uint32_t inst_t; /* an instruction */
	46
	47	typedef __s64 xfs_off_t; /* <file offset> type */
	48	typedef __u64 xfs_ino_t; /* <inode> type */
	49	typedef __s64 xfs_daddr_t; /* <disk address> type */
	50	typedef char * xfs_caddr_t; /* <core address> type */
	51	typedef __u32 xfs_dev_t;
31b084ae	52	typedef __u32 xfs_nlink_t;
1da177e4 LT	53
	54	/* __psint_t is the same size as a pointer */
	55	#if (BITS_PER_LONG == 32)
	56	typedef __int32_t __psint_t;
	57	typedef __uint32_t __psunsigned_t;
	58	#elif (BITS_PER_LONG == 64)
	59	typedef __int64_t __psint_t;
	60	typedef __uint64_t __psunsigned_t;
	61	#else
	62	#error BITS_PER_LONG must be 32 or 64
	63	#endif
	64
	65	#endif /* __KERNEL__ */
	66
	67	typedef __uint32_t xfs_agblock_t; /* blockno in alloc. group */
	68	typedef __uint32_t xfs_extlen_t; /* extent length in blocks */
	69	typedef __uint32_t xfs_agnumber_t; /* allocation group number */
	70	typedef __int32_t xfs_extnum_t; /* # of extents in a file */
	71	typedef __int16_t xfs_aextnum_t; /* # extents in an attribute fork */
	72	typedef __int64_t xfs_fsize_t; /* bytes in a file */
	73	typedef __uint64_t xfs_ufsize_t; /* unsigned bytes in a file */
	74
	75	typedef __int32_t xfs_suminfo_t; /* type of bitmap summary info */
	76	typedef __int32_t xfs_rtword_t; /* word type for bitmap manipulations */
	77
	78	typedef __int64_t xfs_lsn_t; /* log sequence number */
	79	typedef __int32_t xfs_tid_t; /* transaction identifier */
	80
	81	typedef __uint32_t xfs_dablk_t; /* dir/attr block number (in file) */
	82	typedef __uint32_t xfs_dahash_t; /* dir/attr hash value */
	83
	84	typedef __uint16_t xfs_prid_t; /* prid_t truncated to 16bits in XFS */
	85
	86	/*
	87	* These types are 64 bits on disk but are either 32 or 64 bits in memory.
	88	* Disk based types:
	89	*/
	90	typedef __uint64_t xfs_dfsbno_t; /* blockno in filesystem (agno\|agbno) */
	91	typedef __uint64_t xfs_drfsbno_t; /* blockno in filesystem (raw) */
	92	typedef __uint64_t xfs_drtbno_t; /* extent (block) in realtime area */
	93	typedef __uint64_t xfs_dfiloff_t; /* block number in a file */
	94	typedef __uint64_t xfs_dfilblks_t; /* number of blocks in a file */
	95
	96	/*
	97	* Memory based types are conditional.
	98	*/
	99	#if XFS_BIG_BLKNOS
	100	typedef __uint64_t xfs_fsblock_t; /* blockno in filesystem (agno\|agbno) */
	101	typedef __uint64_t xfs_rfsblock_t; /* blockno in filesystem (raw) */
	102	typedef __uint64_t xfs_rtblock_t; /* extent (block) in realtime area */
	103	typedef __int64_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */
	104	#else
	105	typedef __uint32_t xfs_fsblock_t; /* blockno in filesystem (agno\|agbno) */
	106	typedef __uint32_t xfs_rfsblock_t; /* blockno in filesystem (raw) */
	107	typedef __uint32_t xfs_rtblock_t; /* extent (block) in realtime area */
	108	typedef __int32_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */
	109	#endif
	110	typedef __uint64_t xfs_fileoff_t; /* block number in a file */
	111	typedef __int64_t xfs_sfiloff_t; /* signed block number in a file */
	112	typedef __uint64_t xfs_filblks_t; /* number of blocks in a file */
	113
	114	typedef __uint8_t xfs_arch_t; /* architecture of an xfs fs */
	115
	116	/*
117	* Null values for the types.
118	*/
119	#define NULLDFSBNO ((xfs_dfsbno_t)-1)
120	#define NULLDRFSBNO ((xfs_drfsbno_t)-1)
121	#define NULLDRTBNO ((xfs_drtbno_t)-1)
122	#define NULLDFILOFF ((xfs_dfiloff_t)-1)
123
124	#define NULLFSBLOCK ((xfs_fsblock_t)-1)
125	#define NULLRFSBLOCK ((xfs_rfsblock_t)-1)
126	#define NULLRTBLOCK ((xfs_rtblock_t)-1)
127	#define NULLFILEOFF ((xfs_fileoff_t)-1)
128
129	#define NULLAGBLOCK ((xfs_agblock_t)-1)
130	#define NULLAGNUMBER ((xfs_agnumber_t)-1)
131	#define NULLEXTNUM ((xfs_extnum_t)-1)
132
133	#define NULLCOMMITLSN ((xfs_lsn_t)-1)
134
135	/*
136	* Max values for extlen, extnum, aextnum.
137	*/
138	#define MAXEXTLEN ((xfs_extlen_t)0x001fffff) /* 21 bits */
139	#define MAXEXTNUM ((xfs_extnum_t)0x7fffffff) /* signed int */
140	#define MAXAEXTNUM ((xfs_aextnum_t)0x7fff) /* signed short */
141
d8cc890d NS	142	/*
	143	* Min numbers of data/attr fork btree root pointers.
	144	*/
	145	#define MINDBTPTRS 3
	146	#define MINABTPTRS 2
	147
1da177e4 LT	148	/*
	149	* MAXNAMELEN is the length (including the terminating null) of
	150	* the longest permissible file (component) name.
	151	*/
	152	#define MAXNAMELEN 256
	153
1da177e4 LT	154	typedef enum {
	155	XFS_LOOKUP_EQi, XFS_LOOKUP_LEi, XFS_LOOKUP_GEi
	156	} xfs_lookup_t;
	157
	158	typedef enum {
	159	XFS_BTNUM_BNOi, XFS_BTNUM_CNTi, XFS_BTNUM_BMAPi, XFS_BTNUM_INOi,
	160	XFS_BTNUM_MAX
	161	} xfs_btnum_t;
	162
	163	#endif /* __XFS_TYPES_H__ */