diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/xfs/xfs_inum.h |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'fs/xfs/xfs_inum.h')
-rw-r--r-- | fs/xfs/xfs_inum.h | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/fs/xfs/xfs_inum.h b/fs/xfs/xfs_inum.h new file mode 100644 index 00000000000..a3af2d5a6eb --- /dev/null +++ b/fs/xfs/xfs_inum.h | |||
@@ -0,0 +1,173 @@ | |||
1 | /* | ||
2 | * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved. | ||
3 | * | ||
4 | * This program is free software; you can redistribute it and/or modify it | ||
5 | * under the terms of version 2 of the GNU General Public License as | ||
6 | * published by the Free Software Foundation. | ||
7 | * | ||
8 | * This program is distributed in the hope that it would be useful, but | ||
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | ||
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | ||
11 | * | ||
12 | * Further, this software is distributed without any warranty that it is | ||
13 | * free of the rightful claim of any third person regarding infringement | ||
14 | * or the like. Any license provided herein, whether implied or | ||
15 | * otherwise, applies only to this software file. Patent licenses, if | ||
16 | * any, provided herein do not apply to combinations of this program with | ||
17 | * other software, or any other product whatsoever. | ||
18 | * | ||
19 | * You should have received a copy of the GNU General Public License along | ||
20 | * with this program; if not, write the Free Software Foundation, Inc., 59 | ||
21 | * Temple Place - Suite 330, Boston MA 02111-1307, USA. | ||
22 | * | ||
23 | * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, | ||
24 | * Mountain View, CA 94043, or: | ||
25 | * | ||
26 | * http://www.sgi.com | ||
27 | * | ||
28 | * For further information regarding this notice, see: | ||
29 | * | ||
30 | * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ | ||
31 | */ | ||
32 | #ifndef __XFS_INUM_H__ | ||
33 | #define __XFS_INUM_H__ | ||
34 | |||
35 | /* | ||
36 | * Inode number format: | ||
37 | * low inopblog bits - offset in block | ||
38 | * next agblklog bits - block number in ag | ||
39 | * next agno_log bits - ag number | ||
40 | * high agno_log-agblklog-inopblog bits - 0 | ||
41 | */ | ||
42 | |||
43 | typedef __uint32_t xfs_agino_t; /* within allocation grp inode number */ | ||
44 | |||
45 | /* | ||
46 | * Useful inode bits for this kernel. | ||
47 | * Used in some places where having 64-bits in the 32-bit kernels | ||
48 | * costs too much. | ||
49 | */ | ||
50 | #if XFS_BIG_INUMS | ||
51 | typedef xfs_ino_t xfs_intino_t; | ||
52 | #else | ||
53 | typedef __uint32_t xfs_intino_t; | ||
54 | #endif | ||
55 | |||
56 | #define NULLFSINO ((xfs_ino_t)-1) | ||
57 | #define NULLAGINO ((xfs_agino_t)-1) | ||
58 | |||
59 | struct xfs_mount; | ||
60 | |||
61 | #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INO_MASK) | ||
62 | __uint32_t xfs_ino_mask(int k); | ||
63 | #define XFS_INO_MASK(k) xfs_ino_mask(k) | ||
64 | #else | ||
65 | #define XFS_INO_MASK(k) ((__uint32_t)((1ULL << (k)) - 1)) | ||
66 | #endif | ||
67 | #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INO_OFFSET_BITS) | ||
68 | int xfs_ino_offset_bits(struct xfs_mount *mp); | ||
69 | #define XFS_INO_OFFSET_BITS(mp) xfs_ino_offset_bits(mp) | ||
70 | #else | ||
71 | #define XFS_INO_OFFSET_BITS(mp) ((mp)->m_sb.sb_inopblog) | ||
72 | #endif | ||
73 | #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INO_AGBNO_BITS) | ||
74 | int xfs_ino_agbno_bits(struct xfs_mount *mp); | ||
75 | #define XFS_INO_AGBNO_BITS(mp) xfs_ino_agbno_bits(mp) | ||
76 | #else | ||
77 | #define XFS_INO_AGBNO_BITS(mp) ((mp)->m_sb.sb_agblklog) | ||
78 | #endif | ||
79 | #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INO_AGINO_BITS) | ||
80 | int xfs_ino_agino_bits(struct xfs_mount *mp); | ||
81 | #define XFS_INO_AGINO_BITS(mp) xfs_ino_agino_bits(mp) | ||
82 | #else | ||
83 | #define XFS_INO_AGINO_BITS(mp) ((mp)->m_agino_log) | ||
84 | #endif | ||
85 | #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INO_AGNO_BITS) | ||
86 | int xfs_ino_agno_bits(struct xfs_mount *mp); | ||
87 | #define XFS_INO_AGNO_BITS(mp) xfs_ino_agno_bits(mp) | ||
88 | #else | ||
89 | #define XFS_INO_AGNO_BITS(mp) ((mp)->m_agno_log) | ||
90 | #endif | ||
91 | #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INO_BITS) | ||
92 | int xfs_ino_bits(struct xfs_mount *mp); | ||
93 | #define XFS_INO_BITS(mp) xfs_ino_bits(mp) | ||
94 | #else | ||
95 | #define XFS_INO_BITS(mp) (XFS_INO_AGNO_BITS(mp) + XFS_INO_AGINO_BITS(mp)) | ||
96 | #endif | ||
97 | |||
98 | #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INO_TO_AGNO) | ||
99 | xfs_agnumber_t xfs_ino_to_agno(struct xfs_mount *mp, xfs_ino_t i); | ||
100 | #define XFS_INO_TO_AGNO(mp,i) xfs_ino_to_agno(mp,i) | ||
101 | #else | ||
102 | #define XFS_INO_TO_AGNO(mp,i) \ | ||
103 | ((xfs_agnumber_t)((i) >> XFS_INO_AGINO_BITS(mp))) | ||
104 | #endif | ||
105 | #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INO_TO_AGINO) | ||
106 | xfs_agino_t xfs_ino_to_agino(struct xfs_mount *mp, xfs_ino_t i); | ||
107 | #define XFS_INO_TO_AGINO(mp,i) xfs_ino_to_agino(mp,i) | ||
108 | #else | ||
109 | #define XFS_INO_TO_AGINO(mp,i) \ | ||
110 | ((xfs_agino_t)(i) & XFS_INO_MASK(XFS_INO_AGINO_BITS(mp))) | ||
111 | #endif | ||
112 | #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INO_TO_AGBNO) | ||
113 | xfs_agblock_t xfs_ino_to_agbno(struct xfs_mount *mp, xfs_ino_t i); | ||
114 | #define XFS_INO_TO_AGBNO(mp,i) xfs_ino_to_agbno(mp,i) | ||
115 | #else | ||
116 | #define XFS_INO_TO_AGBNO(mp,i) \ | ||
117 | (((xfs_agblock_t)(i) >> XFS_INO_OFFSET_BITS(mp)) & \ | ||
118 | XFS_INO_MASK(XFS_INO_AGBNO_BITS(mp))) | ||
119 | #endif | ||
120 | #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INO_TO_OFFSET) | ||
121 | int xfs_ino_to_offset(struct xfs_mount *mp, xfs_ino_t i); | ||
122 | #define XFS_INO_TO_OFFSET(mp,i) xfs_ino_to_offset(mp,i) | ||
123 | #else | ||
124 | #define XFS_INO_TO_OFFSET(mp,i) \ | ||
125 | ((int)(i) & XFS_INO_MASK(XFS_INO_OFFSET_BITS(mp))) | ||
126 | #endif | ||
127 | #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INO_TO_FSB) | ||
128 | xfs_fsblock_t xfs_ino_to_fsb(struct xfs_mount *mp, xfs_ino_t i); | ||
129 | #define XFS_INO_TO_FSB(mp,i) xfs_ino_to_fsb(mp,i) | ||
130 | #else | ||
131 | #define XFS_INO_TO_FSB(mp,i) \ | ||
132 | XFS_AGB_TO_FSB(mp, XFS_INO_TO_AGNO(mp,i), XFS_INO_TO_AGBNO(mp,i)) | ||
133 | #endif | ||
134 | |||
135 | #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_AGINO_TO_INO) | ||
136 | xfs_ino_t | ||
137 | xfs_agino_to_ino(struct xfs_mount *mp, xfs_agnumber_t a, xfs_agino_t i); | ||
138 | #define XFS_AGINO_TO_INO(mp,a,i) xfs_agino_to_ino(mp,a,i) | ||
139 | #else | ||
140 | #define XFS_AGINO_TO_INO(mp,a,i) \ | ||
141 | (((xfs_ino_t)(a) << XFS_INO_AGINO_BITS(mp)) | (i)) | ||
142 | #endif | ||
143 | #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_AGINO_TO_AGBNO) | ||
144 | xfs_agblock_t xfs_agino_to_agbno(struct xfs_mount *mp, xfs_agino_t i); | ||
145 | #define XFS_AGINO_TO_AGBNO(mp,i) xfs_agino_to_agbno(mp,i) | ||
146 | #else | ||
147 | #define XFS_AGINO_TO_AGBNO(mp,i) ((i) >> XFS_INO_OFFSET_BITS(mp)) | ||
148 | #endif | ||
149 | #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_AGINO_TO_OFFSET) | ||
150 | int xfs_agino_to_offset(struct xfs_mount *mp, xfs_agino_t i); | ||
151 | #define XFS_AGINO_TO_OFFSET(mp,i) xfs_agino_to_offset(mp,i) | ||
152 | #else | ||
153 | #define XFS_AGINO_TO_OFFSET(mp,i) \ | ||
154 | ((i) & XFS_INO_MASK(XFS_INO_OFFSET_BITS(mp))) | ||
155 | #endif | ||
156 | |||
157 | #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_OFFBNO_TO_AGINO) | ||
158 | xfs_agino_t xfs_offbno_to_agino(struct xfs_mount *mp, xfs_agblock_t b, int o); | ||
159 | #define XFS_OFFBNO_TO_AGINO(mp,b,o) xfs_offbno_to_agino(mp,b,o) | ||
160 | #else | ||
161 | #define XFS_OFFBNO_TO_AGINO(mp,b,o) \ | ||
162 | ((xfs_agino_t)(((b) << XFS_INO_OFFSET_BITS(mp)) | (o))) | ||
163 | #endif | ||
164 | |||
165 | #if XFS_BIG_INUMS | ||
166 | #define XFS_MAXINUMBER ((xfs_ino_t)((1ULL << 56) - 1ULL)) | ||
167 | #define XFS_INO64_OFFSET ((xfs_ino_t)(1ULL << 32)) | ||
168 | #else | ||
169 | #define XFS_MAXINUMBER ((xfs_ino_t)((1ULL << 32) - 1ULL)) | ||
170 | #endif | ||
171 | #define XFS_MAXINUMBER_32 ((xfs_ino_t)((1ULL << 32) - 1ULL)) | ||
172 | |||
173 | #endif /* __XFS_INUM_H__ */ | ||