aboutsummaryrefslogtreecommitdiffstats
path: root/extlinux/xfs_types.h
blob: 9280886531ff3d93848c9a05750bf722a08c41e1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
/*
 * Taken from Linux kernel tree (linux/fs/xfs)
 *
 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * Copyright (c) 2012 Paulo Alcantara <pcacjr@zytor.com>
 *
 * 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_

#include <stddef.h>

#include <sys/types.h>

typedef enum { B_FALSE,B_TRUE }	boolean_t;
typedef uint32_t		prid_t;		/* project ID */
typedef uint32_t		inst_t;		/* an instruction */

typedef int64_t			xfs_off_t;	/* <file offset> type */
typedef unsigned long long	xfs_ino_t;	/* <inode> type */
typedef int64_t			xfs_daddr_t;	/* <disk address> type */
typedef char *			xfs_caddr_t;	/* <core address> type */
typedef uint32_t			xfs_dev_t;
typedef uint32_t			xfs_nlink_t;

/* __psint_t is the same size as a pointer */
typedef int32_t __psint_t;
typedef uint32_t __psunsigned_t;

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 */

/*
 * 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.
 */
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 */

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)

/*
 * 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;

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

#endif	/* XFS_TYPES_H_ */