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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 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_SB_H__ | |
19 | #define __XFS_SB_H__ | |
20 | ||
21 | /* | |
22 | * Super block | |
23 | * Fits into a sector-sized buffer at address 0 of each allocation group. | |
24 | * Only the first of these is ever updated except during growfs. | |
25 | */ | |
26 | ||
27 | struct xfs_buf; | |
28 | struct xfs_mount; | |
29 | ||
30 | #define XFS_SB_MAGIC 0x58465342 /* 'XFSB' */ | |
31 | #define XFS_SB_VERSION_1 1 /* 5.3, 6.0.1, 6.1 */ | |
32 | #define XFS_SB_VERSION_2 2 /* 6.2 - attributes */ | |
33 | #define XFS_SB_VERSION_3 3 /* 6.2 - new inode version */ | |
34 | #define XFS_SB_VERSION_4 4 /* 6.2+ - bitmask version */ | |
35 | #define XFS_SB_VERSION_NUMBITS 0x000f | |
36 | #define XFS_SB_VERSION_ALLFBITS 0xfff0 | |
37 | #define XFS_SB_VERSION_SASHFBITS 0xf000 | |
38 | #define XFS_SB_VERSION_REALFBITS 0x0ff0 | |
39 | #define XFS_SB_VERSION_ATTRBIT 0x0010 | |
40 | #define XFS_SB_VERSION_NLINKBIT 0x0020 | |
41 | #define XFS_SB_VERSION_QUOTABIT 0x0040 | |
42 | #define XFS_SB_VERSION_ALIGNBIT 0x0080 | |
43 | #define XFS_SB_VERSION_DALIGNBIT 0x0100 | |
44 | #define XFS_SB_VERSION_SHAREDBIT 0x0200 | |
45 | #define XFS_SB_VERSION_LOGV2BIT 0x0400 | |
46 | #define XFS_SB_VERSION_SECTORBIT 0x0800 | |
47 | #define XFS_SB_VERSION_EXTFLGBIT 0x1000 | |
48 | #define XFS_SB_VERSION_DIRV2BIT 0x2000 | |
49 | #define XFS_SB_VERSION_MOREBITSBIT 0x8000 | |
50 | #define XFS_SB_VERSION_OKSASHFBITS \ | |
51 | (XFS_SB_VERSION_EXTFLGBIT | \ | |
52 | XFS_SB_VERSION_DIRV2BIT) | |
53 | #define XFS_SB_VERSION_OKREALFBITS \ | |
54 | (XFS_SB_VERSION_ATTRBIT | \ | |
55 | XFS_SB_VERSION_NLINKBIT | \ | |
56 | XFS_SB_VERSION_QUOTABIT | \ | |
57 | XFS_SB_VERSION_ALIGNBIT | \ | |
58 | XFS_SB_VERSION_DALIGNBIT | \ | |
59 | XFS_SB_VERSION_SHAREDBIT | \ | |
60 | XFS_SB_VERSION_LOGV2BIT | \ | |
d8cc890d NS |
61 | XFS_SB_VERSION_SECTORBIT | \ |
62 | XFS_SB_VERSION_MOREBITSBIT) | |
1da177e4 LT |
63 | #define XFS_SB_VERSION_OKSASHBITS \ |
64 | (XFS_SB_VERSION_NUMBITS | \ | |
65 | XFS_SB_VERSION_REALFBITS | \ | |
66 | XFS_SB_VERSION_OKSASHFBITS) | |
67 | #define XFS_SB_VERSION_OKREALBITS \ | |
68 | (XFS_SB_VERSION_NUMBITS | \ | |
69 | XFS_SB_VERSION_OKREALFBITS | \ | |
70 | XFS_SB_VERSION_OKSASHFBITS) | |
1da177e4 LT |
71 | |
72 | /* | |
73 | * There are two words to hold XFS "feature" bits: the original | |
74 | * word, sb_versionnum, and sb_features2. Whenever a bit is set in | |
75 | * sb_features2, the feature bit XFS_SB_VERSION_MOREBITSBIT must be set. | |
76 | * | |
77 | * These defines represent bits in sb_features2. | |
78 | */ | |
79 | #define XFS_SB_VERSION2_REALFBITS 0x00ffffff /* Mask: features */ | |
80 | #define XFS_SB_VERSION2_RESERVED1BIT 0x00000001 | |
d8cc890d NS |
81 | #define XFS_SB_VERSION2_RESERVED2BIT 0x00000002 |
82 | #define XFS_SB_VERSION2_RESERVED4BIT 0x00000004 | |
83 | #define XFS_SB_VERSION2_ATTR2BIT 0x00000008 /* Inline attr rework */ | |
1da177e4 LT |
84 | #define XFS_SB_VERSION2_SASHFBITS 0xff000000 /* Mask: features that |
85 | require changing | |
86 | PROM and SASH */ | |
87 | ||
88 | #define XFS_SB_VERSION2_OKREALFBITS \ | |
d8cc890d | 89 | (XFS_SB_VERSION2_ATTR2BIT) |
1da177e4 LT |
90 | #define XFS_SB_VERSION2_OKSASHFBITS \ |
91 | (0) | |
92 | #define XFS_SB_VERSION2_OKREALBITS \ | |
93 | (XFS_SB_VERSION2_OKREALFBITS | \ | |
94 | XFS_SB_VERSION2_OKSASHFBITS ) | |
95 | ||
1da177e4 LT |
96 | typedef struct xfs_sb |
97 | { | |
98 | __uint32_t sb_magicnum; /* magic number == XFS_SB_MAGIC */ | |
99 | __uint32_t sb_blocksize; /* logical block size, bytes */ | |
100 | xfs_drfsbno_t sb_dblocks; /* number of data blocks */ | |
101 | xfs_drfsbno_t sb_rblocks; /* number of realtime blocks */ | |
102 | xfs_drtbno_t sb_rextents; /* number of realtime extents */ | |
103 | uuid_t sb_uuid; /* file system unique id */ | |
104 | xfs_dfsbno_t sb_logstart; /* starting block of log if internal */ | |
105 | xfs_ino_t sb_rootino; /* root inode number */ | |
106 | xfs_ino_t sb_rbmino; /* bitmap inode for realtime extents */ | |
107 | xfs_ino_t sb_rsumino; /* summary inode for rt bitmap */ | |
108 | xfs_agblock_t sb_rextsize; /* realtime extent size, blocks */ | |
109 | xfs_agblock_t sb_agblocks; /* size of an allocation group */ | |
110 | xfs_agnumber_t sb_agcount; /* number of allocation groups */ | |
111 | xfs_extlen_t sb_rbmblocks; /* number of rt bitmap blocks */ | |
112 | xfs_extlen_t sb_logblocks; /* number of log blocks */ | |
113 | __uint16_t sb_versionnum; /* header version == XFS_SB_VERSION */ | |
114 | __uint16_t sb_sectsize; /* volume sector size, bytes */ | |
115 | __uint16_t sb_inodesize; /* inode size, bytes */ | |
116 | __uint16_t sb_inopblock; /* inodes per block */ | |
117 | char sb_fname[12]; /* file system name */ | |
118 | __uint8_t sb_blocklog; /* log2 of sb_blocksize */ | |
119 | __uint8_t sb_sectlog; /* log2 of sb_sectsize */ | |
120 | __uint8_t sb_inodelog; /* log2 of sb_inodesize */ | |
121 | __uint8_t sb_inopblog; /* log2 of sb_inopblock */ | |
122 | __uint8_t sb_agblklog; /* log2 of sb_agblocks (rounded up) */ | |
123 | __uint8_t sb_rextslog; /* log2 of sb_rextents */ | |
124 | __uint8_t sb_inprogress; /* mkfs is in progress, don't mount */ | |
125 | __uint8_t sb_imax_pct; /* max % of fs for inode space */ | |
126 | /* statistics */ | |
127 | /* | |
128 | * These fields must remain contiguous. If you really | |
129 | * want to change their layout, make sure you fix the | |
130 | * code in xfs_trans_apply_sb_deltas(). | |
131 | */ | |
132 | __uint64_t sb_icount; /* allocated inodes */ | |
133 | __uint64_t sb_ifree; /* free inodes */ | |
134 | __uint64_t sb_fdblocks; /* free data blocks */ | |
135 | __uint64_t sb_frextents; /* free realtime extents */ | |
136 | /* | |
137 | * End contiguous fields. | |
138 | */ | |
139 | xfs_ino_t sb_uquotino; /* user quota inode */ | |
140 | xfs_ino_t sb_gquotino; /* group quota inode */ | |
141 | __uint16_t sb_qflags; /* quota flags */ | |
142 | __uint8_t sb_flags; /* misc. flags */ | |
143 | __uint8_t sb_shared_vn; /* shared version number */ | |
144 | xfs_extlen_t sb_inoalignmt; /* inode chunk alignment, fsblocks */ | |
145 | __uint32_t sb_unit; /* stripe or raid unit */ | |
146 | __uint32_t sb_width; /* stripe or raid width */ | |
147 | __uint8_t sb_dirblklog; /* log2 of dir block size (fsbs) */ | |
148 | __uint8_t sb_logsectlog; /* log2 of the log sector size */ | |
149 | __uint16_t sb_logsectsize; /* sector size for the log, bytes */ | |
150 | __uint32_t sb_logsunit; /* stripe unit size for the log */ | |
d8cc890d | 151 | __uint32_t sb_features2; /* additional feature bits */ |
1da177e4 LT |
152 | } xfs_sb_t; |
153 | ||
154 | /* | |
155 | * Sequence number values for the fields. | |
156 | */ | |
157 | typedef enum { | |
158 | XFS_SBS_MAGICNUM, XFS_SBS_BLOCKSIZE, XFS_SBS_DBLOCKS, XFS_SBS_RBLOCKS, | |
159 | XFS_SBS_REXTENTS, XFS_SBS_UUID, XFS_SBS_LOGSTART, XFS_SBS_ROOTINO, | |
160 | XFS_SBS_RBMINO, XFS_SBS_RSUMINO, XFS_SBS_REXTSIZE, XFS_SBS_AGBLOCKS, | |
161 | XFS_SBS_AGCOUNT, XFS_SBS_RBMBLOCKS, XFS_SBS_LOGBLOCKS, | |
162 | XFS_SBS_VERSIONNUM, XFS_SBS_SECTSIZE, XFS_SBS_INODESIZE, | |
163 | XFS_SBS_INOPBLOCK, XFS_SBS_FNAME, XFS_SBS_BLOCKLOG, | |
164 | XFS_SBS_SECTLOG, XFS_SBS_INODELOG, XFS_SBS_INOPBLOG, XFS_SBS_AGBLKLOG, | |
165 | XFS_SBS_REXTSLOG, XFS_SBS_INPROGRESS, XFS_SBS_IMAX_PCT, XFS_SBS_ICOUNT, | |
166 | XFS_SBS_IFREE, XFS_SBS_FDBLOCKS, XFS_SBS_FREXTENTS, XFS_SBS_UQUOTINO, | |
167 | XFS_SBS_GQUOTINO, XFS_SBS_QFLAGS, XFS_SBS_FLAGS, XFS_SBS_SHARED_VN, | |
168 | XFS_SBS_INOALIGNMT, XFS_SBS_UNIT, XFS_SBS_WIDTH, XFS_SBS_DIRBLKLOG, | |
169 | XFS_SBS_LOGSECTLOG, XFS_SBS_LOGSECTSIZE, XFS_SBS_LOGSUNIT, | |
170 | XFS_SBS_FEATURES2, | |
171 | XFS_SBS_FIELDCOUNT | |
172 | } xfs_sb_field_t; | |
173 | ||
174 | /* | |
175 | * Mask values, defined based on the xfs_sb_field_t values. | |
176 | * Only define the ones we're using. | |
177 | */ | |
178 | #define XFS_SB_MVAL(x) (1LL << XFS_SBS_ ## x) | |
179 | #define XFS_SB_UUID XFS_SB_MVAL(UUID) | |
180 | #define XFS_SB_FNAME XFS_SB_MVAL(FNAME) | |
181 | #define XFS_SB_ROOTINO XFS_SB_MVAL(ROOTINO) | |
182 | #define XFS_SB_RBMINO XFS_SB_MVAL(RBMINO) | |
183 | #define XFS_SB_RSUMINO XFS_SB_MVAL(RSUMINO) | |
184 | #define XFS_SB_VERSIONNUM XFS_SB_MVAL(VERSIONNUM) | |
185 | #define XFS_SB_UQUOTINO XFS_SB_MVAL(UQUOTINO) | |
186 | #define XFS_SB_GQUOTINO XFS_SB_MVAL(GQUOTINO) | |
187 | #define XFS_SB_QFLAGS XFS_SB_MVAL(QFLAGS) | |
188 | #define XFS_SB_SHARED_VN XFS_SB_MVAL(SHARED_VN) | |
189 | #define XFS_SB_UNIT XFS_SB_MVAL(UNIT) | |
190 | #define XFS_SB_WIDTH XFS_SB_MVAL(WIDTH) | |
d8cc890d | 191 | #define XFS_SB_FEATURES2 XFS_SB_MVAL(FEATURES2) |
1da177e4 LT |
192 | #define XFS_SB_NUM_BITS ((int)XFS_SBS_FIELDCOUNT) |
193 | #define XFS_SB_ALL_BITS ((1LL << XFS_SB_NUM_BITS) - 1) | |
194 | #define XFS_SB_MOD_BITS \ | |
195 | (XFS_SB_UUID | XFS_SB_ROOTINO | XFS_SB_RBMINO | XFS_SB_RSUMINO | \ | |
196 | XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | XFS_SB_GQUOTINO | \ | |
d8cc890d NS |
197 | XFS_SB_QFLAGS | XFS_SB_SHARED_VN | XFS_SB_UNIT | XFS_SB_WIDTH | \ |
198 | XFS_SB_FEATURES2) | |
199 | ||
1da177e4 LT |
200 | |
201 | /* | |
202 | * Misc. Flags - warning - these will be cleared by xfs_repair unless | |
203 | * a feature bit is set when the flag is used. | |
204 | */ | |
205 | #define XFS_SBF_NOFLAGS 0x00 /* no flags set */ | |
206 | #define XFS_SBF_READONLY 0x01 /* only read-only mounts allowed */ | |
207 | ||
208 | /* | |
209 | * define max. shared version we can interoperate with | |
210 | */ | |
211 | #define XFS_SB_MAX_SHARED_VN 0 | |
212 | ||
1da177e4 | 213 | #define XFS_SB_VERSION_NUM(sbp) ((sbp)->sb_versionnum & XFS_SB_VERSION_NUMBITS) |
1da177e4 | 214 | |
1da177e4 | 215 | #define XFS_SB_GOOD_VERSION(sbp) xfs_sb_good_version(sbp) |
1da177e4 | 216 | #ifdef __KERNEL__ |
a844f451 NS |
217 | static inline int xfs_sb_good_version(xfs_sb_t *sbp) |
218 | { | |
219 | return (((sbp->sb_versionnum >= XFS_SB_VERSION_1) && \ | |
220 | (sbp->sb_versionnum <= XFS_SB_VERSION_3)) || \ | |
221 | ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
222 | !((sbp->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS) || \ | |
223 | ((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) && \ | |
224 | (sbp->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS))) && \ | |
225 | (sbp->sb_shared_vn <= XFS_SB_MAX_SHARED_VN))); | |
226 | } | |
227 | #else | |
228 | static inline int xfs_sb_good_version(xfs_sb_t *sbp) | |
229 | { | |
230 | return (((sbp->sb_versionnum >= XFS_SB_VERSION_1) && \ | |
231 | (sbp->sb_versionnum <= XFS_SB_VERSION_3)) || \ | |
232 | ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
233 | !((sbp->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS) || \ | |
234 | ((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) && \ | |
235 | (sbp->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS))) && \ | |
236 | (!(sbp->sb_versionnum & XFS_SB_VERSION_SHAREDBIT) || \ | |
237 | (sbp->sb_shared_vn <= XFS_SB_MAX_SHARED_VN)))); | |
238 | } | |
1da177e4 | 239 | #endif /* __KERNEL__ */ |
1da177e4 LT |
240 | |
241 | #define XFS_SB_GOOD_SASH_VERSION(sbp) \ | |
242 | ((((sbp)->sb_versionnum >= XFS_SB_VERSION_1) && \ | |
243 | ((sbp)->sb_versionnum <= XFS_SB_VERSION_3)) || \ | |
244 | ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
245 | !((sbp)->sb_versionnum & ~XFS_SB_VERSION_OKSASHBITS))) | |
246 | ||
1da177e4 | 247 | #define XFS_SB_VERSION_TONEW(v) xfs_sb_version_tonew(v) |
a844f451 NS |
248 | static inline unsigned xfs_sb_version_tonew(unsigned v) |
249 | { | |
250 | return ((((v) == XFS_SB_VERSION_1) ? \ | |
1da177e4 LT |
251 | 0 : \ |
252 | (((v) == XFS_SB_VERSION_2) ? \ | |
253 | XFS_SB_VERSION_ATTRBIT : \ | |
254 | (XFS_SB_VERSION_ATTRBIT | XFS_SB_VERSION_NLINKBIT))) | \ | |
a844f451 NS |
255 | XFS_SB_VERSION_4); |
256 | } | |
1da177e4 | 257 | |
1da177e4 | 258 | #define XFS_SB_VERSION_TOOLD(v) xfs_sb_version_toold(v) |
a844f451 NS |
259 | static inline unsigned xfs_sb_version_toold(unsigned v) |
260 | { | |
261 | return (((v) & (XFS_SB_VERSION_QUOTABIT | XFS_SB_VERSION_ALIGNBIT)) ? \ | |
1da177e4 LT |
262 | 0 : \ |
263 | (((v) & XFS_SB_VERSION_NLINKBIT) ? \ | |
264 | XFS_SB_VERSION_3 : \ | |
265 | (((v) & XFS_SB_VERSION_ATTRBIT) ? \ | |
266 | XFS_SB_VERSION_2 : \ | |
a844f451 NS |
267 | XFS_SB_VERSION_1))); |
268 | } | |
1da177e4 | 269 | |
1da177e4 | 270 | #define XFS_SB_VERSION_HASATTR(sbp) xfs_sb_version_hasattr(sbp) |
a844f451 NS |
271 | static inline int xfs_sb_version_hasattr(xfs_sb_t *sbp) |
272 | { | |
273 | return ((sbp)->sb_versionnum == XFS_SB_VERSION_2) || \ | |
274 | ((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \ | |
275 | ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
276 | ((sbp)->sb_versionnum & XFS_SB_VERSION_ATTRBIT)); | |
277 | } | |
1da177e4 | 278 | |
1da177e4 | 279 | #define XFS_SB_VERSION_ADDATTR(sbp) xfs_sb_version_addattr(sbp) |
a844f451 NS |
280 | static inline void xfs_sb_version_addattr(xfs_sb_t *sbp) |
281 | { | |
282 | (sbp)->sb_versionnum = (((sbp)->sb_versionnum == XFS_SB_VERSION_1) ? \ | |
1da177e4 LT |
283 | XFS_SB_VERSION_2 : \ |
284 | ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) ? \ | |
285 | ((sbp)->sb_versionnum | XFS_SB_VERSION_ATTRBIT) : \ | |
a844f451 NS |
286 | (XFS_SB_VERSION_4 | XFS_SB_VERSION_ATTRBIT))); |
287 | } | |
1da177e4 | 288 | |
1da177e4 | 289 | #define XFS_SB_VERSION_HASNLINK(sbp) xfs_sb_version_hasnlink(sbp) |
a844f451 NS |
290 | static inline int xfs_sb_version_hasnlink(xfs_sb_t *sbp) |
291 | { | |
292 | return ((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \ | |
293 | ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
294 | ((sbp)->sb_versionnum & XFS_SB_VERSION_NLINKBIT)); | |
295 | } | |
1da177e4 | 296 | |
1da177e4 | 297 | #define XFS_SB_VERSION_ADDNLINK(sbp) xfs_sb_version_addnlink(sbp) |
a844f451 NS |
298 | static inline void xfs_sb_version_addnlink(xfs_sb_t *sbp) |
299 | { | |
300 | (sbp)->sb_versionnum = ((sbp)->sb_versionnum <= XFS_SB_VERSION_2 ? \ | |
1da177e4 | 301 | XFS_SB_VERSION_3 : \ |
a844f451 NS |
302 | ((sbp)->sb_versionnum | XFS_SB_VERSION_NLINKBIT)); |
303 | } | |
1da177e4 | 304 | |
1da177e4 | 305 | #define XFS_SB_VERSION_HASQUOTA(sbp) xfs_sb_version_hasquota(sbp) |
a844f451 NS |
306 | static inline int xfs_sb_version_hasquota(xfs_sb_t *sbp) |
307 | { | |
308 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
309 | ((sbp)->sb_versionnum & XFS_SB_VERSION_QUOTABIT); | |
310 | } | |
1da177e4 | 311 | |
1da177e4 | 312 | #define XFS_SB_VERSION_ADDQUOTA(sbp) xfs_sb_version_addquota(sbp) |
a844f451 NS |
313 | static inline void xfs_sb_version_addquota(xfs_sb_t *sbp) |
314 | { | |
315 | (sbp)->sb_versionnum = \ | |
316 | (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 ? \ | |
317 | ((sbp)->sb_versionnum | XFS_SB_VERSION_QUOTABIT) : \ | |
318 | (XFS_SB_VERSION_TONEW((sbp)->sb_versionnum) | \ | |
319 | XFS_SB_VERSION_QUOTABIT)); | |
320 | } | |
321 | ||
1da177e4 | 322 | #define XFS_SB_VERSION_HASALIGN(sbp) xfs_sb_version_hasalign(sbp) |
a844f451 NS |
323 | static inline int xfs_sb_version_hasalign(xfs_sb_t *sbp) |
324 | { | |
325 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
326 | ((sbp)->sb_versionnum & XFS_SB_VERSION_ALIGNBIT); | |
327 | } | |
1da177e4 | 328 | |
1da177e4 | 329 | #define XFS_SB_VERSION_SUBALIGN(sbp) xfs_sb_version_subalign(sbp) |
a844f451 NS |
330 | static inline void xfs_sb_version_subalign(xfs_sb_t *sbp) |
331 | { | |
332 | (sbp)->sb_versionnum = \ | |
333 | XFS_SB_VERSION_TOOLD((sbp)->sb_versionnum & ~XFS_SB_VERSION_ALIGNBIT); | |
334 | } | |
1da177e4 | 335 | |
1da177e4 | 336 | #define XFS_SB_VERSION_HASDALIGN(sbp) xfs_sb_version_hasdalign(sbp) |
a844f451 NS |
337 | static inline int xfs_sb_version_hasdalign(xfs_sb_t *sbp) |
338 | { | |
339 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
340 | ((sbp)->sb_versionnum & XFS_SB_VERSION_DALIGNBIT); | |
341 | } | |
1da177e4 | 342 | |
1da177e4 | 343 | #define XFS_SB_VERSION_ADDDALIGN(sbp) xfs_sb_version_adddalign(sbp) |
a844f451 NS |
344 | static inline int xfs_sb_version_adddalign(xfs_sb_t *sbp) |
345 | { | |
346 | return (sbp)->sb_versionnum = \ | |
347 | ((sbp)->sb_versionnum | XFS_SB_VERSION_DALIGNBIT); | |
348 | } | |
1da177e4 | 349 | |
1da177e4 | 350 | #define XFS_SB_VERSION_HASSHARED(sbp) xfs_sb_version_hasshared(sbp) |
a844f451 NS |
351 | static inline int xfs_sb_version_hasshared(xfs_sb_t *sbp) |
352 | { | |
353 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
354 | ((sbp)->sb_versionnum & XFS_SB_VERSION_SHAREDBIT); | |
355 | } | |
1da177e4 | 356 | |
1da177e4 | 357 | #define XFS_SB_VERSION_ADDSHARED(sbp) xfs_sb_version_addshared(sbp) |
a844f451 NS |
358 | static inline int xfs_sb_version_addshared(xfs_sb_t *sbp) |
359 | { | |
360 | return (sbp)->sb_versionnum = \ | |
361 | ((sbp)->sb_versionnum | XFS_SB_VERSION_SHAREDBIT); | |
362 | } | |
1da177e4 | 363 | |
1da177e4 | 364 | #define XFS_SB_VERSION_SUBSHARED(sbp) xfs_sb_version_subshared(sbp) |
a844f451 NS |
365 | static inline int xfs_sb_version_subshared(xfs_sb_t *sbp) |
366 | { | |
367 | return (sbp)->sb_versionnum = \ | |
368 | ((sbp)->sb_versionnum & ~XFS_SB_VERSION_SHAREDBIT); | |
369 | } | |
1da177e4 | 370 | |
1da177e4 | 371 | #define XFS_SB_VERSION_HASDIRV2(sbp) xfs_sb_version_hasdirv2(sbp) |
a844f451 NS |
372 | static inline int xfs_sb_version_hasdirv2(xfs_sb_t *sbp) |
373 | { | |
374 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
375 | ((sbp)->sb_versionnum & XFS_SB_VERSION_DIRV2BIT); | |
376 | } | |
1da177e4 | 377 | |
1da177e4 | 378 | #define XFS_SB_VERSION_HASLOGV2(sbp) xfs_sb_version_haslogv2(sbp) |
a844f451 NS |
379 | static inline int xfs_sb_version_haslogv2(xfs_sb_t *sbp) |
380 | { | |
381 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
382 | ((sbp)->sb_versionnum & XFS_SB_VERSION_LOGV2BIT); | |
383 | } | |
1da177e4 | 384 | |
1da177e4 | 385 | #define XFS_SB_VERSION_HASEXTFLGBIT(sbp) xfs_sb_version_hasextflgbit(sbp) |
a844f451 NS |
386 | static inline int xfs_sb_version_hasextflgbit(xfs_sb_t *sbp) |
387 | { | |
388 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
389 | ((sbp)->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT); | |
390 | } | |
1da177e4 | 391 | |
1da177e4 | 392 | #define XFS_SB_VERSION_ADDEXTFLGBIT(sbp) xfs_sb_version_addextflgbit(sbp) |
a844f451 NS |
393 | static inline int xfs_sb_version_addextflgbit(xfs_sb_t *sbp) |
394 | { | |
395 | return (sbp)->sb_versionnum = \ | |
396 | ((sbp)->sb_versionnum | XFS_SB_VERSION_EXTFLGBIT); | |
397 | } | |
1da177e4 | 398 | |
1da177e4 | 399 | #define XFS_SB_VERSION_SUBEXTFLGBIT(sbp) xfs_sb_version_subextflgbit(sbp) |
a844f451 NS |
400 | static inline int xfs_sb_version_subextflgbit(xfs_sb_t *sbp) |
401 | { | |
402 | return (sbp)->sb_versionnum = \ | |
403 | ((sbp)->sb_versionnum & ~XFS_SB_VERSION_EXTFLGBIT); | |
404 | } | |
1da177e4 | 405 | |
1da177e4 | 406 | #define XFS_SB_VERSION_HASSECTOR(sbp) xfs_sb_version_hassector(sbp) |
a844f451 NS |
407 | static inline int xfs_sb_version_hassector(xfs_sb_t *sbp) |
408 | { | |
409 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
410 | ((sbp)->sb_versionnum & XFS_SB_VERSION_SECTORBIT); | |
411 | } | |
1da177e4 | 412 | |
1da177e4 | 413 | #define XFS_SB_VERSION_HASMOREBITS(sbp) xfs_sb_version_hasmorebits(sbp) |
a844f451 NS |
414 | static inline int xfs_sb_version_hasmorebits(xfs_sb_t *sbp) |
415 | { | |
416 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
417 | ((sbp)->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT); | |
418 | } | |
1da177e4 LT |
419 | |
420 | /* | |
421 | * sb_features2 bit version macros. | |
422 | * | |
d8cc890d | 423 | * For example, for a bit defined as XFS_SB_VERSION2_FUNBIT, has a macro: |
1da177e4 | 424 | * |
d8cc890d | 425 | * SB_VERSION_HASFUNBIT(xfs_sb_t *sbp) |
1da177e4 | 426 | * ((XFS_SB_VERSION_HASMOREBITS(sbp) && |
d8cc890d | 427 | * ((sbp)->sb_features2 & XFS_SB_VERSION2_FUNBIT) |
1da177e4 | 428 | */ |
a844f451 | 429 | |
d8cc890d | 430 | #define XFS_SB_VERSION_HASATTR2(sbp) xfs_sb_version_hasattr2(sbp) |
a844f451 NS |
431 | static inline int xfs_sb_version_hasattr2(xfs_sb_t *sbp) |
432 | { | |
433 | return (XFS_SB_VERSION_HASMOREBITS(sbp)) && \ | |
434 | ((sbp)->sb_features2 & XFS_SB_VERSION2_ATTR2BIT); | |
435 | } | |
1da177e4 | 436 | |
d8cc890d | 437 | #define XFS_SB_VERSION_ADDATTR2(sbp) xfs_sb_version_addattr2(sbp) |
a844f451 NS |
438 | static inline void xfs_sb_version_addattr2(xfs_sb_t *sbp) |
439 | { | |
d8cc890d NS |
440 | ((sbp)->sb_versionnum = \ |
441 | ((sbp)->sb_versionnum | XFS_SB_VERSION_MOREBITSBIT), \ | |
442 | ((sbp)->sb_features2 = \ | |
a844f451 NS |
443 | ((sbp)->sb_features2 | XFS_SB_VERSION2_ATTR2BIT))); |
444 | } | |
445 | ||
1da177e4 LT |
446 | /* |
447 | * end of superblock version macros | |
448 | */ | |
449 | ||
a844f451 | 450 | #define XFS_SB_DADDR ((xfs_daddr_t)0) /* daddr in filesystem/ag */ |
1da177e4 | 451 | #define XFS_SB_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_SB_DADDR) |
1da177e4 | 452 | #define XFS_BUF_TO_SBP(bp) ((xfs_sb_t *)XFS_BUF_PTR(bp)) |
a844f451 NS |
453 | |
454 | #define XFS_HDR_BLOCK(mp,d) ((xfs_agblock_t)XFS_BB_TO_FSBT(mp,d)) | |
455 | #define XFS_DADDR_TO_FSB(mp,d) XFS_AGB_TO_FSB(mp, \ | |
456 | XFS_DADDR_TO_AGNO(mp,d), XFS_DADDR_TO_AGBNO(mp,d)) | |
457 | #define XFS_FSB_TO_DADDR(mp,fsbno) XFS_AGB_TO_DADDR(mp, \ | |
458 | XFS_FSB_TO_AGNO(mp,fsbno), XFS_FSB_TO_AGBNO(mp,fsbno)) | |
1da177e4 LT |
459 | |
460 | /* | |
461 | * File system sector to basic block conversions. | |
462 | */ | |
463 | #define XFS_FSS_TO_BB(mp,sec) ((sec) << (mp)->m_sectbb_log) | |
464 | #define XFS_BB_TO_FSS(mp,bb) \ | |
465 | (((bb) + (XFS_FSS_TO_BB(mp,1) - 1)) >> (mp)->m_sectbb_log) | |
466 | #define XFS_BB_TO_FSST(mp,bb) ((bb) >> (mp)->m_sectbb_log) | |
467 | ||
468 | /* | |
469 | * File system sector to byte conversions. | |
470 | */ | |
471 | #define XFS_FSS_TO_B(mp,sectno) ((xfs_fsize_t)(sectno) << (mp)->m_sb.sb_sectlog) | |
472 | #define XFS_B_TO_FSST(mp,b) (((__uint64_t)(b)) >> (mp)->m_sb.sb_sectlog) | |
473 | ||
474 | /* | |
475 | * File system block to basic block conversions. | |
476 | */ | |
477 | #define XFS_FSB_TO_BB(mp,fsbno) ((fsbno) << (mp)->m_blkbb_log) | |
478 | #define XFS_BB_TO_FSB(mp,bb) \ | |
479 | (((bb) + (XFS_FSB_TO_BB(mp,1) - 1)) >> (mp)->m_blkbb_log) | |
480 | #define XFS_BB_TO_FSBT(mp,bb) ((bb) >> (mp)->m_blkbb_log) | |
481 | #define XFS_BB_FSB_OFFSET(mp,bb) ((bb) & ((mp)->m_bsize - 1)) | |
482 | ||
483 | /* | |
484 | * File system block to byte conversions. | |
485 | */ | |
486 | #define XFS_FSB_TO_B(mp,fsbno) ((xfs_fsize_t)(fsbno) << (mp)->m_sb.sb_blocklog) | |
487 | #define XFS_B_TO_FSB(mp,b) \ | |
488 | ((((__uint64_t)(b)) + (mp)->m_blockmask) >> (mp)->m_sb.sb_blocklog) | |
489 | #define XFS_B_TO_FSBT(mp,b) (((__uint64_t)(b)) >> (mp)->m_sb.sb_blocklog) | |
490 | #define XFS_B_FSB_OFFSET(mp,b) ((b) & (mp)->m_blockmask) | |
491 | ||
492 | #endif /* __XFS_SB_H__ */ |