1/*
  2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
  3 * All Rights Reserved.
  4 *
  5 * This program is free software; you can redistribute it and/or
  6 * modify it under the terms of the GNU General Public License as
  7 * published by the Free Software Foundation.
  8 *
  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.
 13 *
 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
 17 */
 18#ifndef __XFS_TYPES_H__
 19#define	__XFS_TYPES_H__
 20
 21#ifdef __KERNEL__
 22
 23/*
 24 * Additional type declarations for XFS
 25 */
 26typedef signed char		__int8_t;
 27typedef unsigned char		__uint8_t;
 28typedef signed short int	__int16_t;
 29typedef unsigned short int	__uint16_t;
 30typedef signed int		__int32_t;
 31typedef unsigned int		__uint32_t;
 32typedef signed long long int	__int64_t;
 33typedef unsigned long long int	__uint64_t;
 34
 35typedef enum { B_FALSE,B_TRUE }	boolean_t;
 36typedef __uint32_t		prid_t;		/* project ID */
 37typedef __uint32_t		inst_t;		/* an instruction */
 38
 39typedef __s64			xfs_off_t;	/* <file offset> type */
 40typedef unsigned long long	xfs_ino_t;	/* <inode> type */
 41typedef __s64			xfs_daddr_t;	/* <disk address> type */
 42typedef char *			xfs_caddr_t;	/* <core address> type */
 43typedef __u32			xfs_dev_t;
 44typedef __u32			xfs_nlink_t;
 45
 46/* __psint_t is the same size as a pointer */
 47#if (BITS_PER_LONG == 32)
 48typedef __int32_t __psint_t;
 49typedef __uint32_t __psunsigned_t;
 50#elif (BITS_PER_LONG == 64)
 51typedef __int64_t __psint_t;
 52typedef __uint64_t __psunsigned_t;
 53#else
 54#error BITS_PER_LONG must be 32 or 64
 55#endif
 56
 57#endif	/* __KERNEL__ */
 58
 59typedef __uint32_t	xfs_agblock_t;	/* blockno in alloc. group */
 60typedef	__uint32_t	xfs_agino_t;	/* inode # within allocation grp */
 61typedef	__uint32_t	xfs_extlen_t;	/* extent length in blocks */
 62typedef	__uint32_t	xfs_agnumber_t;	/* allocation group number */
 63typedef __int32_t	xfs_extnum_t;	/* # of extents in a file */
 64typedef __int16_t	xfs_aextnum_t;	/* # extents in an attribute fork */
 65typedef	__int64_t	xfs_fsize_t;	/* bytes in a file */
 66typedef __uint64_t	xfs_ufsize_t;	/* unsigned bytes in a file */
 67
 68typedef	__int32_t	xfs_suminfo_t;	/* type of bitmap summary info */
 69typedef	__int32_t	xfs_rtword_t;	/* word type for bitmap manipulations */
 70
 71typedef	__int64_t	xfs_lsn_t;	/* log sequence number */
 72typedef	__int32_t	xfs_tid_t;	/* transaction identifier */
 73
 74typedef	__uint32_t	xfs_dablk_t;	/* dir/attr block number (in file) */
 75typedef	__uint32_t	xfs_dahash_t;	/* dir/attr hash value */
 76
 77/*
 78 * These types are 64 bits on disk but are either 32 or 64 bits in memory.
 79 * Disk based types:
 80 */
 81typedef __uint64_t	xfs_dfsbno_t;	/* blockno in filesystem (agno|agbno) */
 82typedef __uint64_t	xfs_drfsbno_t;	/* blockno in filesystem (raw) */
 83typedef	__uint64_t	xfs_drtbno_t;	/* extent (block) in realtime area */
 84typedef	__uint64_t	xfs_dfiloff_t;	/* block number in a file */
 85typedef	__uint64_t	xfs_dfilblks_t;	/* number of blocks in a file */
 86
 87/*
 88 * Memory based types are conditional.
 89 */
 90#if XFS_BIG_BLKNOS
 91typedef	__uint64_t	xfs_fsblock_t;	/* blockno in filesystem (agno|agbno) */
 92typedef __uint64_t	xfs_rfsblock_t;	/* blockno in filesystem (raw) */
 93typedef __uint64_t	xfs_rtblock_t;	/* extent (block) in realtime area */
 94typedef	__int64_t	xfs_srtblock_t;	/* signed version of xfs_rtblock_t */
 95#else
 96typedef	__uint32_t	xfs_fsblock_t;	/* blockno in filesystem (agno|agbno) */
 97typedef __uint32_t	xfs_rfsblock_t;	/* blockno in filesystem (raw) */
 98typedef __uint32_t	xfs_rtblock_t;	/* extent (block) in realtime area */
 99typedef	__int32_t	xfs_srtblock_t;	/* signed version of xfs_rtblock_t */
100#endif
101typedef __uint64_t	xfs_fileoff_t;	/* block number in a file */
102typedef __int64_t	xfs_sfiloff_t;	/* signed block number in a file */
103typedef __uint64_t	xfs_filblks_t;	/* number of blocks in a file */
104
105
106/*
107 * Null values for the types.
108 */
109#define	NULLDFSBNO	((xfs_dfsbno_t)-1)
110#define	NULLDRFSBNO	((xfs_drfsbno_t)-1)
111#define	NULLDRTBNO	((xfs_drtbno_t)-1)
112#define	NULLDFILOFF	((xfs_dfiloff_t)-1)
113
114#define	NULLFSBLOCK	((xfs_fsblock_t)-1)
115#define	NULLRFSBLOCK	((xfs_rfsblock_t)-1)
116#define	NULLRTBLOCK	((xfs_rtblock_t)-1)
117#define	NULLFILEOFF	((xfs_fileoff_t)-1)
118
119#define	NULLAGBLOCK	((xfs_agblock_t)-1)
120#define	NULLAGNUMBER	((xfs_agnumber_t)-1)
121#define	NULLEXTNUM	((xfs_extnum_t)-1)
122
123#define NULLCOMMITLSN	((xfs_lsn_t)-1)
124
125#define	NULLFSINO	((xfs_ino_t)-1)
126#define	NULLAGINO	((xfs_agino_t)-1)
127
128/*
129 * Max values for extlen, extnum, aextnum.
130 */
131#define	MAXEXTLEN	((xfs_extlen_t)0x001fffff)	/* 21 bits */
132#define	MAXEXTNUM	((xfs_extnum_t)0x7fffffff)	/* signed int */
133#define	MAXAEXTNUM	((xfs_aextnum_t)0x7fff)		/* signed short */
134
135/*
136 * Min numbers of data/attr fork btree root pointers.
137 */
138#define MINDBTPTRS	3
139#define MINABTPTRS	2
140
141/*
142 * MAXNAMELEN is the length (including the terminating null) of
143 * the longest permissible file (component) name.
144 */
145#define MAXNAMELEN	256
146
147typedef enum {
148	XFS_LOOKUP_EQi, XFS_LOOKUP_LEi, XFS_LOOKUP_GEi
149} xfs_lookup_t;
150
151typedef enum {
152	XFS_BTNUM_BNOi, XFS_BTNUM_CNTi, XFS_BTNUM_BMAPi, XFS_BTNUM_INOi,
153	XFS_BTNUM_MAX
154} xfs_btnum_t;
155
156struct xfs_name {
157	const unsigned char	*name;
158	int			len;
159};
160
161#endif	/* __XFS_TYPES_H__ */