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
21typedef __uint32_t	prid_t;		/* project ID */
22
23typedef __uint32_t	xfs_agblock_t;	/* blockno in alloc. group */
24typedef	__uint32_t	xfs_agino_t;	/* inode # within allocation grp */
25typedef	__uint32_t	xfs_extlen_t;	/* extent length in blocks */
26typedef	__uint32_t	xfs_agnumber_t;	/* allocation group number */
27typedef __int32_t	xfs_extnum_t;	/* # of extents in a file */
28typedef __int16_t	xfs_aextnum_t;	/* # extents in an attribute fork */
29typedef	__int64_t	xfs_fsize_t;	/* bytes in a file */
30typedef __uint64_t	xfs_ufsize_t;	/* unsigned bytes in a file */
31
32typedef	__int32_t	xfs_suminfo_t;	/* type of bitmap summary info */
33typedef	__int32_t	xfs_rtword_t;	/* word type for bitmap manipulations */
34
35typedef	__int64_t	xfs_lsn_t;	/* log sequence number */
36typedef	__int32_t	xfs_tid_t;	/* transaction identifier */
37
38typedef	__uint32_t	xfs_dablk_t;	/* dir/attr block number (in file) */
39typedef	__uint32_t	xfs_dahash_t;	/* dir/attr hash value */
40
41typedef	__uint64_t	xfs_fsblock_t;	/* blockno in filesystem (agno|agbno) */
42typedef __uint64_t	xfs_rfsblock_t;	/* blockno in filesystem (raw) */
43typedef __uint64_t	xfs_rtblock_t;	/* extent (block) in realtime area */
44typedef __uint64_t	xfs_fileoff_t;	/* block number in a file */
45typedef __uint64_t	xfs_filblks_t;	/* number of blocks in a file */
46
47typedef	__int64_t	xfs_srtblock_t;	/* signed version of xfs_rtblock_t */
48typedef __int64_t	xfs_sfiloff_t;	/* signed block number in a file */
49
50/*
51 * Null values for the types.
52 */
53#define	NULLFSBLOCK	((xfs_fsblock_t)-1)
54#define	NULLRFSBLOCK	((xfs_rfsblock_t)-1)
55#define	NULLRTBLOCK	((xfs_rtblock_t)-1)
56#define	NULLFILEOFF	((xfs_fileoff_t)-1)
57
58#define	NULLAGBLOCK	((xfs_agblock_t)-1)
59#define	NULLAGNUMBER	((xfs_agnumber_t)-1)
60#define	NULLEXTNUM	((xfs_extnum_t)-1)
61
62#define NULLCOMMITLSN	((xfs_lsn_t)-1)
63
64#define	NULLFSINO	((xfs_ino_t)-1)
65#define	NULLAGINO	((xfs_agino_t)-1)
66
67/*
68 * Max values for extlen, extnum, aextnum.
69 */
70#define	MAXEXTLEN	((xfs_extlen_t)0x001fffff)	/* 21 bits */
71#define	MAXEXTNUM	((xfs_extnum_t)0x7fffffff)	/* signed int */
72#define	MAXAEXTNUM	((xfs_aextnum_t)0x7fff)		/* signed short */
73
74/*
75 * Minimum and maximum blocksize and sectorsize.
76 * The blocksize upper limit is pretty much arbitrary.
77 * The sectorsize upper limit is due to sizeof(sb_sectsize).
78 */
79#define XFS_MIN_BLOCKSIZE_LOG	9	/* i.e. 512 bytes */
80#define XFS_MAX_BLOCKSIZE_LOG	16	/* i.e. 65536 bytes */
81#define XFS_MIN_BLOCKSIZE	(1 << XFS_MIN_BLOCKSIZE_LOG)
82#define XFS_MAX_BLOCKSIZE	(1 << XFS_MAX_BLOCKSIZE_LOG)
83#define XFS_MIN_SECTORSIZE_LOG	9	/* i.e. 512 bytes */
84#define XFS_MAX_SECTORSIZE_LOG	15	/* i.e. 32768 bytes */
85#define XFS_MIN_SECTORSIZE	(1 << XFS_MIN_SECTORSIZE_LOG)
86#define XFS_MAX_SECTORSIZE	(1 << XFS_MAX_SECTORSIZE_LOG)
87
88/*
89 * Inode fork identifiers.
90 */
91#define	XFS_DATA_FORK	0
92#define	XFS_ATTR_FORK	1
93
94/*
95 * Min numbers of data/attr fork btree root pointers.
96 */
97#define MINDBTPTRS	3
98#define MINABTPTRS	2
99
100/*
101 * MAXNAMELEN is the length (including the terminating null) of
102 * the longest permissible file (component) name.
103 */
104#define MAXNAMELEN	256
105
106typedef enum {
107	XFS_LOOKUP_EQi, XFS_LOOKUP_LEi, XFS_LOOKUP_GEi
108} xfs_lookup_t;
109
110typedef enum {
111	XFS_BTNUM_BNOi, XFS_BTNUM_CNTi, XFS_BTNUM_BMAPi, XFS_BTNUM_INOi,
112	XFS_BTNUM_FINOi, XFS_BTNUM_MAX
113} xfs_btnum_t;
114
115struct xfs_name {
116	const unsigned char	*name;
117	int			len;
118	int			type;
119};
120
121/*
122 * uid_t and gid_t are hard-coded to 32 bits in the inode.
123 * Hence, an 'id' in a dquot is 32 bits..
124 */
125typedef __uint32_t	xfs_dqid_t;
126
127/*
128 * Constants for bit manipulations.
129 */
130#define	XFS_NBBYLOG	3		/* log2(NBBY) */
131#define	XFS_WORDLOG	2		/* log2(sizeof(xfs_rtword_t)) */
132#define	XFS_NBWORDLOG	(XFS_NBBYLOG + XFS_WORDLOG)
133#define	XFS_NBWORD	(1 << XFS_NBWORDLOG)
134#define	XFS_WORDMASK	((1 << XFS_WORDLOG) - 1)
135
136
137#endif	/* __XFS_TYPES_H__ */
138