2 * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
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.
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.
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.
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.
23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
24 * Mountain View, CA 94043, or:
28 * For further information regarding this notice, see:
30 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
37 * Fits into a sector-sized buffer at address 0 of each allocation group.
38 * Only the first of these is ever updated except during growfs.
44 #define XFS_SB_MAGIC 0x58465342 /* 'XFSB' */
45 #define XFS_SB_VERSION_1 1 /* 5.3, 6.0.1, 6.1 */
46 #define XFS_SB_VERSION_2 2 /* 6.2 - attributes */
47 #define XFS_SB_VERSION_3 3 /* 6.2 - new inode version */
48 #define XFS_SB_VERSION_4 4 /* 6.2+ - bitmask version */
49 #define XFS_SB_VERSION_NUMBITS 0x000f
50 #define XFS_SB_VERSION_ALLFBITS 0xfff0
51 #define XFS_SB_VERSION_SASHFBITS 0xf000
52 #define XFS_SB_VERSION_REALFBITS 0x0ff0
53 #define XFS_SB_VERSION_ATTRBIT 0x0010
54 #define XFS_SB_VERSION_NLINKBIT 0x0020
55 #define XFS_SB_VERSION_QUOTABIT 0x0040
56 #define XFS_SB_VERSION_ALIGNBIT 0x0080
57 #define XFS_SB_VERSION_DALIGNBIT 0x0100
58 #define XFS_SB_VERSION_SHAREDBIT 0x0200
59 #define XFS_SB_VERSION_LOGV2BIT 0x0400
60 #define XFS_SB_VERSION_SECTORBIT 0x0800
61 #define XFS_SB_VERSION_EXTFLGBIT 0x1000
62 #define XFS_SB_VERSION_DIRV2BIT 0x2000
63 #define XFS_SB_VERSION_MOREBITSBIT 0x8000
64 #define XFS_SB_VERSION_OKSASHFBITS \
65 (XFS_SB_VERSION_EXTFLGBIT | \
66 XFS_SB_VERSION_DIRV2BIT)
67 #define XFS_SB_VERSION_OKREALFBITS \
68 (XFS_SB_VERSION_ATTRBIT | \
69 XFS_SB_VERSION_NLINKBIT | \
70 XFS_SB_VERSION_QUOTABIT | \
71 XFS_SB_VERSION_ALIGNBIT | \
72 XFS_SB_VERSION_DALIGNBIT | \
73 XFS_SB_VERSION_SHAREDBIT | \
74 XFS_SB_VERSION_LOGV2BIT | \
75 XFS_SB_VERSION_SECTORBIT | \
76 XFS_SB_VERSION_MOREBITSBIT)
77 #define XFS_SB_VERSION_OKSASHBITS \
78 (XFS_SB_VERSION_NUMBITS | \
79 XFS_SB_VERSION_REALFBITS | \
80 XFS_SB_VERSION_OKSASHFBITS)
81 #define XFS_SB_VERSION_OKREALBITS \
82 (XFS_SB_VERSION_NUMBITS | \
83 XFS_SB_VERSION_OKREALFBITS | \
84 XFS_SB_VERSION_OKSASHFBITS)
85 #define XFS_SB_VERSION_MKFS(ia,dia,extflag,dirv2,na,sflag,morebits) \
86 (((ia) || (dia) || (extflag) || (dirv2) || (na) || (sflag) || \
89 ((ia) ? XFS_SB_VERSION_ALIGNBIT : 0) | \
90 ((dia) ? XFS_SB_VERSION_DALIGNBIT : 0) | \
91 ((extflag) ? XFS_SB_VERSION_EXTFLGBIT : 0) | \
92 ((dirv2) ? XFS_SB_VERSION_DIRV2BIT : 0) | \
93 ((na) ? XFS_SB_VERSION_LOGV2BIT : 0) | \
94 ((sflag) ? XFS_SB_VERSION_SECTORBIT : 0) | \
95 ((morebits) ? XFS_SB_VERSION_MOREBITSBIT : 0)) : \
99 * There are two words to hold XFS "feature" bits: the original
100 * word, sb_versionnum, and sb_features2. Whenever a bit is set in
101 * sb_features2, the feature bit XFS_SB_VERSION_MOREBITSBIT must be set.
103 * These defines represent bits in sb_features2.
105 #define XFS_SB_VERSION2_REALFBITS 0x00ffffff /* Mask: features */
106 #define XFS_SB_VERSION2_RESERVED1BIT 0x00000001
107 #define XFS_SB_VERSION2_RESERVED2BIT 0x00000002
108 #define XFS_SB_VERSION2_RESERVED4BIT 0x00000004
109 #define XFS_SB_VERSION2_ATTR2BIT 0x00000008 /* Inline attr rework */
110 #define XFS_SB_VERSION2_SASHFBITS 0xff000000 /* Mask: features that
114 #define XFS_SB_VERSION2_OKREALFBITS \
115 (XFS_SB_VERSION2_ATTR2BIT)
116 #define XFS_SB_VERSION2_OKSASHFBITS \
118 #define XFS_SB_VERSION2_OKREALBITS \
119 (XFS_SB_VERSION2_OKREALFBITS | \
120 XFS_SB_VERSION2_OKSASHFBITS )
123 * mkfs macro to set up sb_features2 word
125 #define XFS_SB_VERSION2_MKFS(resvd1, sbcntr) 0
127 typedef struct xfs_sb
129 __uint32_t sb_magicnum; /* magic number == XFS_SB_MAGIC */
130 __uint32_t sb_blocksize; /* logical block size, bytes */
131 xfs_drfsbno_t sb_dblocks; /* number of data blocks */
132 xfs_drfsbno_t sb_rblocks; /* number of realtime blocks */
133 xfs_drtbno_t sb_rextents; /* number of realtime extents */
134 uuid_t sb_uuid; /* file system unique id */
135 xfs_dfsbno_t sb_logstart; /* starting block of log if internal */
136 xfs_ino_t sb_rootino; /* root inode number */
137 xfs_ino_t sb_rbmino; /* bitmap inode for realtime extents */
138 xfs_ino_t sb_rsumino; /* summary inode for rt bitmap */
139 xfs_agblock_t sb_rextsize; /* realtime extent size, blocks */
140 xfs_agblock_t sb_agblocks; /* size of an allocation group */
141 xfs_agnumber_t sb_agcount; /* number of allocation groups */
142 xfs_extlen_t sb_rbmblocks; /* number of rt bitmap blocks */
143 xfs_extlen_t sb_logblocks; /* number of log blocks */
144 __uint16_t sb_versionnum; /* header version == XFS_SB_VERSION */
145 __uint16_t sb_sectsize; /* volume sector size, bytes */
146 __uint16_t sb_inodesize; /* inode size, bytes */
147 __uint16_t sb_inopblock; /* inodes per block */
148 char sb_fname[12]; /* file system name */
149 __uint8_t sb_blocklog; /* log2 of sb_blocksize */
150 __uint8_t sb_sectlog; /* log2 of sb_sectsize */
151 __uint8_t sb_inodelog; /* log2 of sb_inodesize */
152 __uint8_t sb_inopblog; /* log2 of sb_inopblock */
153 __uint8_t sb_agblklog; /* log2 of sb_agblocks (rounded up) */
154 __uint8_t sb_rextslog; /* log2 of sb_rextents */
155 __uint8_t sb_inprogress; /* mkfs is in progress, don't mount */
156 __uint8_t sb_imax_pct; /* max % of fs for inode space */
159 * These fields must remain contiguous. If you really
160 * want to change their layout, make sure you fix the
161 * code in xfs_trans_apply_sb_deltas().
163 __uint64_t sb_icount; /* allocated inodes */
164 __uint64_t sb_ifree; /* free inodes */
165 __uint64_t sb_fdblocks; /* free data blocks */
166 __uint64_t sb_frextents; /* free realtime extents */
168 * End contiguous fields.
170 xfs_ino_t sb_uquotino; /* user quota inode */
171 xfs_ino_t sb_gquotino; /* group quota inode */
172 __uint16_t sb_qflags; /* quota flags */
173 __uint8_t sb_flags; /* misc. flags */
174 __uint8_t sb_shared_vn; /* shared version number */
175 xfs_extlen_t sb_inoalignmt; /* inode chunk alignment, fsblocks */
176 __uint32_t sb_unit; /* stripe or raid unit */
177 __uint32_t sb_width; /* stripe or raid width */
178 __uint8_t sb_dirblklog; /* log2 of dir block size (fsbs) */
179 __uint8_t sb_logsectlog; /* log2 of the log sector size */
180 __uint16_t sb_logsectsize; /* sector size for the log, bytes */
181 __uint32_t sb_logsunit; /* stripe unit size for the log */
182 __uint32_t sb_features2; /* additional feature bits */
186 * Sequence number values for the fields.
189 XFS_SBS_MAGICNUM, XFS_SBS_BLOCKSIZE, XFS_SBS_DBLOCKS, XFS_SBS_RBLOCKS,
190 XFS_SBS_REXTENTS, XFS_SBS_UUID, XFS_SBS_LOGSTART, XFS_SBS_ROOTINO,
191 XFS_SBS_RBMINO, XFS_SBS_RSUMINO, XFS_SBS_REXTSIZE, XFS_SBS_AGBLOCKS,
192 XFS_SBS_AGCOUNT, XFS_SBS_RBMBLOCKS, XFS_SBS_LOGBLOCKS,
193 XFS_SBS_VERSIONNUM, XFS_SBS_SECTSIZE, XFS_SBS_INODESIZE,
194 XFS_SBS_INOPBLOCK, XFS_SBS_FNAME, XFS_SBS_BLOCKLOG,
195 XFS_SBS_SECTLOG, XFS_SBS_INODELOG, XFS_SBS_INOPBLOG, XFS_SBS_AGBLKLOG,
196 XFS_SBS_REXTSLOG, XFS_SBS_INPROGRESS, XFS_SBS_IMAX_PCT, XFS_SBS_ICOUNT,
197 XFS_SBS_IFREE, XFS_SBS_FDBLOCKS, XFS_SBS_FREXTENTS, XFS_SBS_UQUOTINO,
198 XFS_SBS_GQUOTINO, XFS_SBS_QFLAGS, XFS_SBS_FLAGS, XFS_SBS_SHARED_VN,
199 XFS_SBS_INOALIGNMT, XFS_SBS_UNIT, XFS_SBS_WIDTH, XFS_SBS_DIRBLKLOG,
200 XFS_SBS_LOGSECTLOG, XFS_SBS_LOGSECTSIZE, XFS_SBS_LOGSUNIT,
206 * Mask values, defined based on the xfs_sb_field_t values.
207 * Only define the ones we're using.
209 #define XFS_SB_MVAL(x) (1LL << XFS_SBS_ ## x)
210 #define XFS_SB_UUID XFS_SB_MVAL(UUID)
211 #define XFS_SB_FNAME XFS_SB_MVAL(FNAME)
212 #define XFS_SB_ROOTINO XFS_SB_MVAL(ROOTINO)
213 #define XFS_SB_RBMINO XFS_SB_MVAL(RBMINO)
214 #define XFS_SB_RSUMINO XFS_SB_MVAL(RSUMINO)
215 #define XFS_SB_VERSIONNUM XFS_SB_MVAL(VERSIONNUM)
216 #define XFS_SB_UQUOTINO XFS_SB_MVAL(UQUOTINO)
217 #define XFS_SB_GQUOTINO XFS_SB_MVAL(GQUOTINO)
218 #define XFS_SB_QFLAGS XFS_SB_MVAL(QFLAGS)
219 #define XFS_SB_SHARED_VN XFS_SB_MVAL(SHARED_VN)
220 #define XFS_SB_UNIT XFS_SB_MVAL(UNIT)
221 #define XFS_SB_WIDTH XFS_SB_MVAL(WIDTH)
222 #define XFS_SB_FEATURES2 XFS_SB_MVAL(FEATURES2)
223 #define XFS_SB_NUM_BITS ((int)XFS_SBS_FIELDCOUNT)
224 #define XFS_SB_ALL_BITS ((1LL << XFS_SB_NUM_BITS) - 1)
225 #define XFS_SB_MOD_BITS \
226 (XFS_SB_UUID | XFS_SB_ROOTINO | XFS_SB_RBMINO | XFS_SB_RSUMINO | \
227 XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | XFS_SB_GQUOTINO | \
228 XFS_SB_QFLAGS | XFS_SB_SHARED_VN | XFS_SB_UNIT | XFS_SB_WIDTH | \
233 * Misc. Flags - warning - these will be cleared by xfs_repair unless
234 * a feature bit is set when the flag is used.
236 #define XFS_SBF_NOFLAGS 0x00 /* no flags set */
237 #define XFS_SBF_READONLY 0x01 /* only read-only mounts allowed */
240 * define max. shared version we can interoperate with
242 #define XFS_SB_MAX_SHARED_VN 0
244 #define XFS_SB_VERSION_NUM(sbp) ((sbp)->sb_versionnum & XFS_SB_VERSION_NUMBITS)
246 #define XFS_SB_GOOD_VERSION(sbp) xfs_sb_good_version(sbp)
248 static inline int xfs_sb_good_version(xfs_sb_t *sbp)
250 return (((sbp->sb_versionnum >= XFS_SB_VERSION_1) && \
251 (sbp->sb_versionnum <= XFS_SB_VERSION_3)) || \
252 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
253 !((sbp->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS) || \
254 ((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) && \
255 (sbp->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS))) && \
256 (sbp->sb_shared_vn <= XFS_SB_MAX_SHARED_VN)));
259 static inline int xfs_sb_good_version(xfs_sb_t *sbp)
261 return (((sbp->sb_versionnum >= XFS_SB_VERSION_1) && \
262 (sbp->sb_versionnum <= XFS_SB_VERSION_3)) || \
263 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
264 !((sbp->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS) || \
265 ((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) && \
266 (sbp->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS))) && \
267 (!(sbp->sb_versionnum & XFS_SB_VERSION_SHAREDBIT) || \
268 (sbp->sb_shared_vn <= XFS_SB_MAX_SHARED_VN))));
270 #endif /* __KERNEL__ */
272 #define XFS_SB_GOOD_SASH_VERSION(sbp) \
273 ((((sbp)->sb_versionnum >= XFS_SB_VERSION_1) && \
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_OKSASHBITS)))
278 #define XFS_SB_VERSION_TONEW(v) xfs_sb_version_tonew(v)
279 static inline unsigned xfs_sb_version_tonew(unsigned v)
281 return ((((v) == XFS_SB_VERSION_1) ? \
283 (((v) == XFS_SB_VERSION_2) ? \
284 XFS_SB_VERSION_ATTRBIT : \
285 (XFS_SB_VERSION_ATTRBIT | XFS_SB_VERSION_NLINKBIT))) | \
289 #define XFS_SB_VERSION_TOOLD(v) xfs_sb_version_toold(v)
290 static inline unsigned xfs_sb_version_toold(unsigned v)
292 return (((v) & (XFS_SB_VERSION_QUOTABIT | XFS_SB_VERSION_ALIGNBIT)) ? \
294 (((v) & XFS_SB_VERSION_NLINKBIT) ? \
296 (((v) & XFS_SB_VERSION_ATTRBIT) ? \
301 #define XFS_SB_VERSION_HASATTR(sbp) xfs_sb_version_hasattr(sbp)
302 static inline int xfs_sb_version_hasattr(xfs_sb_t *sbp)
304 return ((sbp)->sb_versionnum == XFS_SB_VERSION_2) || \
305 ((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \
306 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
307 ((sbp)->sb_versionnum & XFS_SB_VERSION_ATTRBIT));
310 #define XFS_SB_VERSION_ADDATTR(sbp) xfs_sb_version_addattr(sbp)
311 static inline void xfs_sb_version_addattr(xfs_sb_t *sbp)
313 (sbp)->sb_versionnum = (((sbp)->sb_versionnum == XFS_SB_VERSION_1) ? \
315 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) ? \
316 ((sbp)->sb_versionnum | XFS_SB_VERSION_ATTRBIT) : \
317 (XFS_SB_VERSION_4 | XFS_SB_VERSION_ATTRBIT)));
320 #define XFS_SB_VERSION_HASNLINK(sbp) xfs_sb_version_hasnlink(sbp)
321 static inline int xfs_sb_version_hasnlink(xfs_sb_t *sbp)
323 return ((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \
324 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
325 ((sbp)->sb_versionnum & XFS_SB_VERSION_NLINKBIT));
328 #define XFS_SB_VERSION_ADDNLINK(sbp) xfs_sb_version_addnlink(sbp)
329 static inline void xfs_sb_version_addnlink(xfs_sb_t *sbp)
331 (sbp)->sb_versionnum = ((sbp)->sb_versionnum <= XFS_SB_VERSION_2 ? \
333 ((sbp)->sb_versionnum | XFS_SB_VERSION_NLINKBIT));
336 #define XFS_SB_VERSION_HASQUOTA(sbp) xfs_sb_version_hasquota(sbp)
337 static inline int xfs_sb_version_hasquota(xfs_sb_t *sbp)
339 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
340 ((sbp)->sb_versionnum & XFS_SB_VERSION_QUOTABIT);
343 #define XFS_SB_VERSION_ADDQUOTA(sbp) xfs_sb_version_addquota(sbp)
344 static inline void xfs_sb_version_addquota(xfs_sb_t *sbp)
346 (sbp)->sb_versionnum = \
347 (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 ? \
348 ((sbp)->sb_versionnum | XFS_SB_VERSION_QUOTABIT) : \
349 (XFS_SB_VERSION_TONEW((sbp)->sb_versionnum) | \
350 XFS_SB_VERSION_QUOTABIT));
353 #define XFS_SB_VERSION_HASALIGN(sbp) xfs_sb_version_hasalign(sbp)
354 static inline int xfs_sb_version_hasalign(xfs_sb_t *sbp)
356 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
357 ((sbp)->sb_versionnum & XFS_SB_VERSION_ALIGNBIT);
360 #define XFS_SB_VERSION_SUBALIGN(sbp) xfs_sb_version_subalign(sbp)
361 static inline void xfs_sb_version_subalign(xfs_sb_t *sbp)
363 (sbp)->sb_versionnum = \
364 XFS_SB_VERSION_TOOLD((sbp)->sb_versionnum & ~XFS_SB_VERSION_ALIGNBIT);
367 #define XFS_SB_VERSION_HASDALIGN(sbp) xfs_sb_version_hasdalign(sbp)
368 static inline int xfs_sb_version_hasdalign(xfs_sb_t *sbp)
370 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
371 ((sbp)->sb_versionnum & XFS_SB_VERSION_DALIGNBIT);
374 #define XFS_SB_VERSION_ADDDALIGN(sbp) xfs_sb_version_adddalign(sbp)
375 static inline int xfs_sb_version_adddalign(xfs_sb_t *sbp)
377 return (sbp)->sb_versionnum = \
378 ((sbp)->sb_versionnum | XFS_SB_VERSION_DALIGNBIT);
381 #define XFS_SB_VERSION_HASSHARED(sbp) xfs_sb_version_hasshared(sbp)
382 static inline int xfs_sb_version_hasshared(xfs_sb_t *sbp)
384 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
385 ((sbp)->sb_versionnum & XFS_SB_VERSION_SHAREDBIT);
388 #define XFS_SB_VERSION_ADDSHARED(sbp) xfs_sb_version_addshared(sbp)
389 static inline int xfs_sb_version_addshared(xfs_sb_t *sbp)
391 return (sbp)->sb_versionnum = \
392 ((sbp)->sb_versionnum | XFS_SB_VERSION_SHAREDBIT);
395 #define XFS_SB_VERSION_SUBSHARED(sbp) xfs_sb_version_subshared(sbp)
396 static inline int xfs_sb_version_subshared(xfs_sb_t *sbp)
398 return (sbp)->sb_versionnum = \
399 ((sbp)->sb_versionnum & ~XFS_SB_VERSION_SHAREDBIT);
402 #define XFS_SB_VERSION_HASDIRV2(sbp) xfs_sb_version_hasdirv2(sbp)
403 static inline int xfs_sb_version_hasdirv2(xfs_sb_t *sbp)
405 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
406 ((sbp)->sb_versionnum & XFS_SB_VERSION_DIRV2BIT);
409 #define XFS_SB_VERSION_HASLOGV2(sbp) xfs_sb_version_haslogv2(sbp)
410 static inline int xfs_sb_version_haslogv2(xfs_sb_t *sbp)
412 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
413 ((sbp)->sb_versionnum & XFS_SB_VERSION_LOGV2BIT);
416 #define XFS_SB_VERSION_HASEXTFLGBIT(sbp) xfs_sb_version_hasextflgbit(sbp)
417 static inline int xfs_sb_version_hasextflgbit(xfs_sb_t *sbp)
419 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
420 ((sbp)->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT);
423 #define XFS_SB_VERSION_ADDEXTFLGBIT(sbp) xfs_sb_version_addextflgbit(sbp)
424 static inline int xfs_sb_version_addextflgbit(xfs_sb_t *sbp)
426 return (sbp)->sb_versionnum = \
427 ((sbp)->sb_versionnum | XFS_SB_VERSION_EXTFLGBIT);
430 #define XFS_SB_VERSION_SUBEXTFLGBIT(sbp) xfs_sb_version_subextflgbit(sbp)
431 static inline int xfs_sb_version_subextflgbit(xfs_sb_t *sbp)
433 return (sbp)->sb_versionnum = \
434 ((sbp)->sb_versionnum & ~XFS_SB_VERSION_EXTFLGBIT);
437 #define XFS_SB_VERSION_HASSECTOR(sbp) xfs_sb_version_hassector(sbp)
438 static inline int xfs_sb_version_hassector(xfs_sb_t *sbp)
440 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
441 ((sbp)->sb_versionnum & XFS_SB_VERSION_SECTORBIT);
444 #define XFS_SB_VERSION_HASMOREBITS(sbp) xfs_sb_version_hasmorebits(sbp)
445 static inline int xfs_sb_version_hasmorebits(xfs_sb_t *sbp)
447 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
448 ((sbp)->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT);
452 * sb_features2 bit version macros.
454 * For example, for a bit defined as XFS_SB_VERSION2_FUNBIT, has a macro:
456 * SB_VERSION_HASFUNBIT(xfs_sb_t *sbp)
457 * ((XFS_SB_VERSION_HASMOREBITS(sbp) &&
458 * ((sbp)->sb_features2 & XFS_SB_VERSION2_FUNBIT)
461 #define XFS_SB_VERSION_HASATTR2(sbp) xfs_sb_version_hasattr2(sbp)
462 static inline int xfs_sb_version_hasattr2(xfs_sb_t *sbp)
464 return (XFS_SB_VERSION_HASMOREBITS(sbp)) && \
465 ((sbp)->sb_features2 & XFS_SB_VERSION2_ATTR2BIT);
468 #define XFS_SB_VERSION_ADDATTR2(sbp) xfs_sb_version_addattr2(sbp)
469 static inline void xfs_sb_version_addattr2(xfs_sb_t *sbp)
471 ((sbp)->sb_versionnum = \
472 ((sbp)->sb_versionnum | XFS_SB_VERSION_MOREBITSBIT), \
473 ((sbp)->sb_features2 = \
474 ((sbp)->sb_features2 | XFS_SB_VERSION2_ATTR2BIT)));
478 * end of superblock version macros
481 #define XFS_SB_DADDR ((xfs_daddr_t)0) /* daddr in filesystem/ag */
482 #define XFS_SB_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_SB_DADDR)
483 #define XFS_BUF_TO_SBP(bp) ((xfs_sb_t *)XFS_BUF_PTR(bp))
485 #define XFS_HDR_BLOCK(mp,d) ((xfs_agblock_t)XFS_BB_TO_FSBT(mp,d))
486 #define XFS_DADDR_TO_FSB(mp,d) XFS_AGB_TO_FSB(mp, \
487 XFS_DADDR_TO_AGNO(mp,d), XFS_DADDR_TO_AGBNO(mp,d))
488 #define XFS_FSB_TO_DADDR(mp,fsbno) XFS_AGB_TO_DADDR(mp, \
489 XFS_FSB_TO_AGNO(mp,fsbno), XFS_FSB_TO_AGBNO(mp,fsbno))
492 * File system sector to basic block conversions.
494 #define XFS_FSS_TO_BB(mp,sec) ((sec) << (mp)->m_sectbb_log)
495 #define XFS_BB_TO_FSS(mp,bb) \
496 (((bb) + (XFS_FSS_TO_BB(mp,1) - 1)) >> (mp)->m_sectbb_log)
497 #define XFS_BB_TO_FSST(mp,bb) ((bb) >> (mp)->m_sectbb_log)
500 * File system sector to byte conversions.
502 #define XFS_FSS_TO_B(mp,sectno) ((xfs_fsize_t)(sectno) << (mp)->m_sb.sb_sectlog)
503 #define XFS_B_TO_FSST(mp,b) (((__uint64_t)(b)) >> (mp)->m_sb.sb_sectlog)
506 * File system block to basic block conversions.
508 #define XFS_FSB_TO_BB(mp,fsbno) ((fsbno) << (mp)->m_blkbb_log)
509 #define XFS_BB_TO_FSB(mp,bb) \
510 (((bb) + (XFS_FSB_TO_BB(mp,1) - 1)) >> (mp)->m_blkbb_log)
511 #define XFS_BB_TO_FSBT(mp,bb) ((bb) >> (mp)->m_blkbb_log)
512 #define XFS_BB_FSB_OFFSET(mp,bb) ((bb) & ((mp)->m_bsize - 1))
515 * File system block to byte conversions.
517 #define XFS_FSB_TO_B(mp,fsbno) ((xfs_fsize_t)(fsbno) << (mp)->m_sb.sb_blocklog)
518 #define XFS_B_TO_FSB(mp,b) \
519 ((((__uint64_t)(b)) + (mp)->m_blockmask) >> (mp)->m_sb.sb_blocklog)
520 #define XFS_B_TO_FSBT(mp,b) (((__uint64_t)(b)) >> (mp)->m_sb.sb_blocklog)
521 #define XFS_B_FSB_OFFSET(mp,b) ((b) & (mp)->m_blockmask)
523 #endif /* __XFS_SB_H__ */