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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000,2002,2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
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 | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
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_DINODE_H__ | |
19 | #define __XFS_DINODE_H__ | |
20 | ||
21 | struct xfs_buf; | |
22 | struct xfs_mount; | |
23 | ||
24 | #define XFS_DINODE_VERSION_1 1 | |
25 | #define XFS_DINODE_VERSION_2 2 | |
a844f451 NS |
26 | #define XFS_DINODE_GOOD_VERSION(v) \ |
27 | (((v) == XFS_DINODE_VERSION_1 || (v) == XFS_DINODE_VERSION_2)) | |
1da177e4 LT |
28 | #define XFS_DINODE_MAGIC 0x494e /* 'IN' */ |
29 | ||
30 | /* | |
31 | * Disk inode structure. | |
32 | * This is just the header; the inode is expanded to fill a variable size | |
33 | * with the last field expanding. It is split into the core and "other" | |
34 | * because we only need the core part in the in-core inode. | |
35 | */ | |
36 | typedef struct xfs_timestamp { | |
37 | __int32_t t_sec; /* timestamp seconds */ | |
38 | __int32_t t_nsec; /* timestamp nanoseconds */ | |
39 | } xfs_timestamp_t; | |
40 | ||
41 | /* | |
42 | * Note: Coordinate changes to this structure with the XFS_DI_* #defines | |
43 | * below and the offsets table in xfs_ialloc_log_di(). | |
44 | */ | |
45 | typedef struct xfs_dinode_core | |
46 | { | |
47 | __uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */ | |
48 | __uint16_t di_mode; /* mode and type of file */ | |
49 | __int8_t di_version; /* inode version */ | |
50 | __int8_t di_format; /* format of di_c data */ | |
51 | __uint16_t di_onlink; /* old number of links to file */ | |
52 | __uint32_t di_uid; /* owner's user id */ | |
53 | __uint32_t di_gid; /* owner's group id */ | |
54 | __uint32_t di_nlink; /* number of links to file */ | |
55 | __uint16_t di_projid; /* owner's project id */ | |
56 | __uint8_t di_pad[8]; /* unused, zeroed space */ | |
57 | __uint16_t di_flushiter; /* incremented on flush */ | |
58 | xfs_timestamp_t di_atime; /* time last accessed */ | |
59 | xfs_timestamp_t di_mtime; /* time last modified */ | |
60 | xfs_timestamp_t di_ctime; /* time created/inode modified */ | |
61 | xfs_fsize_t di_size; /* number of bytes in file */ | |
62 | xfs_drfsbno_t di_nblocks; /* # of direct & btree blocks used */ | |
63 | xfs_extlen_t di_extsize; /* basic/minimum extent size for file */ | |
64 | xfs_extnum_t di_nextents; /* number of extents in data fork */ | |
65 | xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/ | |
66 | __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */ | |
67 | __int8_t di_aformat; /* format of attr fork's data */ | |
68 | __uint32_t di_dmevmask; /* DMIG event mask */ | |
69 | __uint16_t di_dmstate; /* DMIG state info */ | |
70 | __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */ | |
71 | __uint32_t di_gen; /* generation number */ | |
72 | } xfs_dinode_core_t; | |
73 | ||
74 | #define DI_MAX_FLUSH 0xffff | |
75 | ||
76 | typedef struct xfs_dinode | |
77 | { | |
78 | xfs_dinode_core_t di_core; | |
79 | /* | |
80 | * In adding anything between the core and the union, be | |
81 | * sure to update the macros like XFS_LITINO below and | |
82 | * XFS_BMAP_RBLOCK_DSIZE in xfs_bmap_btree.h. | |
83 | */ | |
84 | xfs_agino_t di_next_unlinked;/* agi unlinked list ptr */ | |
85 | union { | |
86 | xfs_bmdr_block_t di_bmbt; /* btree root block */ | |
87 | xfs_bmbt_rec_32_t di_bmx[1]; /* extent list */ | |
88 | xfs_dir_shortform_t di_dirsf; /* shortform directory */ | |
89 | xfs_dir2_sf_t di_dir2sf; /* shortform directory v2 */ | |
90 | char di_c[1]; /* local contents */ | |
91 | xfs_dev_t di_dev; /* device for S_IFCHR/S_IFBLK */ | |
92 | uuid_t di_muuid; /* mount point value */ | |
93 | char di_symlink[1]; /* local symbolic link */ | |
94 | } di_u; | |
95 | union { | |
96 | xfs_bmdr_block_t di_abmbt; /* btree root block */ | |
97 | xfs_bmbt_rec_32_t di_abmx[1]; /* extent list */ | |
98 | xfs_attr_shortform_t di_attrsf; /* shortform attribute list */ | |
99 | } di_a; | |
100 | } xfs_dinode_t; | |
101 | ||
102 | /* | |
103 | * The 32 bit link count in the inode theoretically maxes out at UINT_MAX. | |
104 | * Since the pathconf interface is signed, we use 2^31 - 1 instead. | |
105 | * The old inode format had a 16 bit link count, so its maximum is USHRT_MAX. | |
106 | */ | |
107 | #define XFS_MAXLINK ((1U << 31) - 1U) | |
108 | #define XFS_MAXLINK_1 65535U | |
109 | ||
110 | /* | |
111 | * Bit names for logging disk inodes only | |
112 | */ | |
113 | #define XFS_DI_MAGIC 0x0000001 | |
114 | #define XFS_DI_MODE 0x0000002 | |
115 | #define XFS_DI_VERSION 0x0000004 | |
116 | #define XFS_DI_FORMAT 0x0000008 | |
117 | #define XFS_DI_ONLINK 0x0000010 | |
118 | #define XFS_DI_UID 0x0000020 | |
119 | #define XFS_DI_GID 0x0000040 | |
120 | #define XFS_DI_NLINK 0x0000080 | |
121 | #define XFS_DI_PROJID 0x0000100 | |
122 | #define XFS_DI_PAD 0x0000200 | |
123 | #define XFS_DI_ATIME 0x0000400 | |
124 | #define XFS_DI_MTIME 0x0000800 | |
125 | #define XFS_DI_CTIME 0x0001000 | |
126 | #define XFS_DI_SIZE 0x0002000 | |
127 | #define XFS_DI_NBLOCKS 0x0004000 | |
128 | #define XFS_DI_EXTSIZE 0x0008000 | |
129 | #define XFS_DI_NEXTENTS 0x0010000 | |
130 | #define XFS_DI_NAEXTENTS 0x0020000 | |
131 | #define XFS_DI_FORKOFF 0x0040000 | |
132 | #define XFS_DI_AFORMAT 0x0080000 | |
133 | #define XFS_DI_DMEVMASK 0x0100000 | |
134 | #define XFS_DI_DMSTATE 0x0200000 | |
135 | #define XFS_DI_FLAGS 0x0400000 | |
136 | #define XFS_DI_GEN 0x0800000 | |
137 | #define XFS_DI_NEXT_UNLINKED 0x1000000 | |
138 | #define XFS_DI_U 0x2000000 | |
139 | #define XFS_DI_A 0x4000000 | |
140 | #define XFS_DI_NUM_BITS 27 | |
141 | #define XFS_DI_ALL_BITS ((1 << XFS_DI_NUM_BITS) - 1) | |
142 | #define XFS_DI_CORE_BITS (XFS_DI_ALL_BITS & ~(XFS_DI_U|XFS_DI_A)) | |
143 | ||
144 | /* | |
145 | * Values for di_format | |
146 | */ | |
147 | typedef enum xfs_dinode_fmt | |
148 | { | |
149 | XFS_DINODE_FMT_DEV, /* CHR, BLK: di_dev */ | |
150 | XFS_DINODE_FMT_LOCAL, /* DIR, REG: di_c */ | |
151 | /* LNK: di_symlink */ | |
152 | XFS_DINODE_FMT_EXTENTS, /* DIR, REG, LNK: di_bmx */ | |
153 | XFS_DINODE_FMT_BTREE, /* DIR, REG, LNK: di_bmbt */ | |
154 | XFS_DINODE_FMT_UUID /* MNT: di_uuid */ | |
155 | } xfs_dinode_fmt_t; | |
156 | ||
157 | /* | |
158 | * Inode minimum and maximum sizes. | |
159 | */ | |
160 | #define XFS_DINODE_MIN_LOG 8 | |
161 | #define XFS_DINODE_MAX_LOG 11 | |
162 | #define XFS_DINODE_MIN_SIZE (1 << XFS_DINODE_MIN_LOG) | |
163 | #define XFS_DINODE_MAX_SIZE (1 << XFS_DINODE_MAX_LOG) | |
164 | ||
165 | /* | |
166 | * Inode size for given fs. | |
167 | */ | |
1da177e4 | 168 | #define XFS_LITINO(mp) ((mp)->m_litino) |
1da177e4 LT |
169 | #define XFS_BROOT_SIZE_ADJ \ |
170 | (sizeof(xfs_bmbt_block_t) - sizeof(xfs_bmdr_block_t)) | |
171 | ||
1da177e4 LT |
172 | /* |
173 | * Inode data & attribute fork sizes, per inode. | |
174 | */ | |
1da177e4 | 175 | #define XFS_CFORK_Q(dcp) ((dcp)->di_forkoff != 0) |
a844f451 | 176 | #define XFS_CFORK_Q_DISK(dcp) ((dcp)->di_forkoff != 0) |
1da177e4 | 177 | |
1da177e4 | 178 | #define XFS_CFORK_BOFF(dcp) ((int)((dcp)->di_forkoff << 3)) |
a844f451 NS |
179 | #define XFS_CFORK_BOFF_DISK(dcp) \ |
180 | ((int)(INT_GET((dcp)->di_forkoff, ARCH_CONVERT) << 3)) | |
1da177e4 | 181 | |
1da177e4 LT |
182 | #define XFS_CFORK_DSIZE_DISK(dcp,mp) \ |
183 | (XFS_CFORK_Q_DISK(dcp) ? XFS_CFORK_BOFF_DISK(dcp) : XFS_LITINO(mp)) | |
184 | #define XFS_CFORK_DSIZE(dcp,mp) \ | |
185 | (XFS_CFORK_Q(dcp) ? XFS_CFORK_BOFF(dcp) : XFS_LITINO(mp)) | |
186 | ||
1da177e4 LT |
187 | #define XFS_CFORK_ASIZE_DISK(dcp,mp) \ |
188 | (XFS_CFORK_Q_DISK(dcp) ? XFS_LITINO(mp) - XFS_CFORK_BOFF_DISK(dcp) : 0) | |
189 | #define XFS_CFORK_ASIZE(dcp,mp) \ | |
190 | (XFS_CFORK_Q(dcp) ? XFS_LITINO(mp) - XFS_CFORK_BOFF(dcp) : 0) | |
191 | ||
1da177e4 LT |
192 | #define XFS_CFORK_SIZE_DISK(dcp,mp,w) \ |
193 | ((w) == XFS_DATA_FORK ? \ | |
194 | XFS_CFORK_DSIZE_DISK(dcp, mp) : \ | |
195 | XFS_CFORK_ASIZE_DISK(dcp, mp)) | |
196 | #define XFS_CFORK_SIZE(dcp,mp,w) \ | |
197 | ((w) == XFS_DATA_FORK ? \ | |
198 | XFS_CFORK_DSIZE(dcp, mp) : XFS_CFORK_ASIZE(dcp, mp)) | |
199 | ||
a844f451 NS |
200 | #define XFS_DFORK_DSIZE(dip,mp) \ |
201 | XFS_CFORK_DSIZE_DISK(&(dip)->di_core, mp) | |
202 | #define XFS_DFORK_ASIZE(dip,mp) \ | |
203 | XFS_CFORK_ASIZE_DISK(&(dip)->di_core, mp) | |
204 | #define XFS_DFORK_SIZE(dip,mp,w) \ | |
205 | XFS_CFORK_SIZE_DISK(&(dip)->di_core, mp, w) | |
1da177e4 | 206 | |
1da177e4 | 207 | #define XFS_DFORK_Q(dip) XFS_CFORK_Q_DISK(&(dip)->di_core) |
1da177e4 | 208 | #define XFS_DFORK_BOFF(dip) XFS_CFORK_BOFF_DISK(&(dip)->di_core) |
1da177e4 | 209 | #define XFS_DFORK_DPTR(dip) ((dip)->di_u.di_c) |
a844f451 NS |
210 | #define XFS_DFORK_APTR(dip) \ |
211 | ((dip)->di_u.di_c + XFS_DFORK_BOFF(dip)) | |
1da177e4 LT |
212 | #define XFS_DFORK_PTR(dip,w) \ |
213 | ((w) == XFS_DATA_FORK ? XFS_DFORK_DPTR(dip) : XFS_DFORK_APTR(dip)) | |
a844f451 | 214 | #define XFS_CFORK_FORMAT(dcp,w) \ |
1da177e4 | 215 | ((w) == XFS_DATA_FORK ? (dcp)->di_format : (dcp)->di_aformat) |
1da177e4 LT |
216 | #define XFS_CFORK_FMT_SET(dcp,w,n) \ |
217 | ((w) == XFS_DATA_FORK ? \ | |
a844f451 | 218 | ((dcp)->di_format = (n)) : ((dcp)->di_aformat = (n))) |
1da177e4 | 219 | |
1da177e4 LT |
220 | #define XFS_CFORK_NEXTENTS_DISK(dcp,w) \ |
221 | ((w) == XFS_DATA_FORK ? \ | |
222 | INT_GET((dcp)->di_nextents, ARCH_CONVERT) : \ | |
223 | INT_GET((dcp)->di_anextents, ARCH_CONVERT)) | |
224 | #define XFS_CFORK_NEXTENTS(dcp,w) \ | |
225 | ((w) == XFS_DATA_FORK ? (dcp)->di_nextents : (dcp)->di_anextents) | |
226 | ||
1da177e4 LT |
227 | #define XFS_CFORK_NEXT_SET(dcp,w,n) \ |
228 | ((w) == XFS_DATA_FORK ? \ | |
a844f451 | 229 | ((dcp)->di_nextents = (n)) : ((dcp)->di_anextents = (n))) |
1da177e4 | 230 | |
1da177e4 | 231 | #define XFS_DFORK_NEXTENTS(dip,w) XFS_CFORK_NEXTENTS_DISK(&(dip)->di_core, w) |
1da177e4 | 232 | |
a844f451 | 233 | #define XFS_BUF_TO_DINODE(bp) ((xfs_dinode_t *)XFS_BUF_PTR(bp)) |
1da177e4 LT |
234 | |
235 | /* | |
236 | * Values for di_flags | |
237 | * There should be a one-to-one correspondence between these flags and the | |
238 | * XFS_XFLAG_s. | |
239 | */ | |
240 | #define XFS_DIFLAG_REALTIME_BIT 0 /* file's blocks come from rt area */ | |
241 | #define XFS_DIFLAG_PREALLOC_BIT 1 /* file space has been preallocated */ | |
242 | #define XFS_DIFLAG_NEWRTBM_BIT 2 /* for rtbitmap inode, new format */ | |
243 | #define XFS_DIFLAG_IMMUTABLE_BIT 3 /* inode is immutable */ | |
244 | #define XFS_DIFLAG_APPEND_BIT 4 /* inode is append-only */ | |
245 | #define XFS_DIFLAG_SYNC_BIT 5 /* inode is written synchronously */ | |
246 | #define XFS_DIFLAG_NOATIME_BIT 6 /* do not update atime */ | |
247 | #define XFS_DIFLAG_NODUMP_BIT 7 /* do not dump */ | |
248 | #define XFS_DIFLAG_RTINHERIT_BIT 8 /* create with realtime bit set */ | |
249 | #define XFS_DIFLAG_PROJINHERIT_BIT 9 /* create with parents projid */ | |
250 | #define XFS_DIFLAG_NOSYMLINKS_BIT 10 /* disallow symlink creation */ | |
251 | #define XFS_DIFLAG_REALTIME (1 << XFS_DIFLAG_REALTIME_BIT) | |
252 | #define XFS_DIFLAG_PREALLOC (1 << XFS_DIFLAG_PREALLOC_BIT) | |
253 | #define XFS_DIFLAG_NEWRTBM (1 << XFS_DIFLAG_NEWRTBM_BIT) | |
254 | #define XFS_DIFLAG_IMMUTABLE (1 << XFS_DIFLAG_IMMUTABLE_BIT) | |
255 | #define XFS_DIFLAG_APPEND (1 << XFS_DIFLAG_APPEND_BIT) | |
256 | #define XFS_DIFLAG_SYNC (1 << XFS_DIFLAG_SYNC_BIT) | |
257 | #define XFS_DIFLAG_NOATIME (1 << XFS_DIFLAG_NOATIME_BIT) | |
258 | #define XFS_DIFLAG_NODUMP (1 << XFS_DIFLAG_NODUMP_BIT) | |
259 | #define XFS_DIFLAG_RTINHERIT (1 << XFS_DIFLAG_RTINHERIT_BIT) | |
260 | #define XFS_DIFLAG_PROJINHERIT (1 << XFS_DIFLAG_PROJINHERIT_BIT) | |
261 | #define XFS_DIFLAG_NOSYMLINKS (1 << XFS_DIFLAG_NOSYMLINKS_BIT) | |
262 | ||
263 | #define XFS_DIFLAG_ANY \ | |
264 | (XFS_DIFLAG_REALTIME | XFS_DIFLAG_PREALLOC | XFS_DIFLAG_NEWRTBM | \ | |
265 | XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND | XFS_DIFLAG_SYNC | \ | |
266 | XFS_DIFLAG_NOATIME | XFS_DIFLAG_NODUMP | XFS_DIFLAG_RTINHERIT | \ | |
267 | XFS_DIFLAG_PROJINHERIT | XFS_DIFLAG_NOSYMLINKS) | |
268 | ||
269 | #endif /* __XFS_DINODE_H__ */ |