2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
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.
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.
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
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.
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 | \
61 XFS_SB_VERSION_SECTORBIT | \
62 XFS_SB_VERSION_MOREBITSBIT)
63 #define XFS_SB_VERSION_OKREALBITS \
64 (XFS_SB_VERSION_NUMBITS | \
65 XFS_SB_VERSION_OKREALFBITS | \
66 XFS_SB_VERSION_OKSASHFBITS)
69 * There are two words to hold XFS "feature" bits: the original
70 * word, sb_versionnum, and sb_features2. Whenever a bit is set in
71 * sb_features2, the feature bit XFS_SB_VERSION_MOREBITSBIT must be set.
73 * These defines represent bits in sb_features2.
75 #define XFS_SB_VERSION2_REALFBITS 0x00ffffff /* Mask: features */
76 #define XFS_SB_VERSION2_RESERVED1BIT 0x00000001
77 #define XFS_SB_VERSION2_LAZYSBCOUNTBIT 0x00000002 /* Superblk counters */
78 #define XFS_SB_VERSION2_RESERVED4BIT 0x00000004
79 #define XFS_SB_VERSION2_ATTR2BIT 0x00000008 /* Inline attr rework */
81 #define XFS_SB_VERSION2_OKREALFBITS \
82 (XFS_SB_VERSION2_LAZYSBCOUNTBIT | \
83 XFS_SB_VERSION2_ATTR2BIT)
84 #define XFS_SB_VERSION2_OKSASHFBITS \
86 #define XFS_SB_VERSION2_OKREALBITS \
87 (XFS_SB_VERSION2_OKREALFBITS | \
88 XFS_SB_VERSION2_OKSASHFBITS )
91 * Superblock - in core version. Must match the ondisk version below.
93 typedef struct xfs_sb {
94 __uint32_t sb_magicnum; /* magic number == XFS_SB_MAGIC */
95 __uint32_t sb_blocksize; /* logical block size, bytes */
96 xfs_drfsbno_t sb_dblocks; /* number of data blocks */
97 xfs_drfsbno_t sb_rblocks; /* number of realtime blocks */
98 xfs_drtbno_t sb_rextents; /* number of realtime extents */
99 uuid_t sb_uuid; /* file system unique id */
100 xfs_dfsbno_t sb_logstart; /* starting block of log if internal */
101 xfs_ino_t sb_rootino; /* root inode number */
102 xfs_ino_t sb_rbmino; /* bitmap inode for realtime extents */
103 xfs_ino_t sb_rsumino; /* summary inode for rt bitmap */
104 xfs_agblock_t sb_rextsize; /* realtime extent size, blocks */
105 xfs_agblock_t sb_agblocks; /* size of an allocation group */
106 xfs_agnumber_t sb_agcount; /* number of allocation groups */
107 xfs_extlen_t sb_rbmblocks; /* number of rt bitmap blocks */
108 xfs_extlen_t sb_logblocks; /* number of log blocks */
109 __uint16_t sb_versionnum; /* header version == XFS_SB_VERSION */
110 __uint16_t sb_sectsize; /* volume sector size, bytes */
111 __uint16_t sb_inodesize; /* inode size, bytes */
112 __uint16_t sb_inopblock; /* inodes per block */
113 char sb_fname[12]; /* file system name */
114 __uint8_t sb_blocklog; /* log2 of sb_blocksize */
115 __uint8_t sb_sectlog; /* log2 of sb_sectsize */
116 __uint8_t sb_inodelog; /* log2 of sb_inodesize */
117 __uint8_t sb_inopblog; /* log2 of sb_inopblock */
118 __uint8_t sb_agblklog; /* log2 of sb_agblocks (rounded up) */
119 __uint8_t sb_rextslog; /* log2 of sb_rextents */
120 __uint8_t sb_inprogress; /* mkfs is in progress, don't mount */
121 __uint8_t sb_imax_pct; /* max % of fs for inode space */
124 * These fields must remain contiguous. If you really
125 * want to change their layout, make sure you fix the
126 * code in xfs_trans_apply_sb_deltas().
128 __uint64_t sb_icount; /* allocated inodes */
129 __uint64_t sb_ifree; /* free inodes */
130 __uint64_t sb_fdblocks; /* free data blocks */
131 __uint64_t sb_frextents; /* free realtime extents */
133 * End contiguous fields.
135 xfs_ino_t sb_uquotino; /* user quota inode */
136 xfs_ino_t sb_gquotino; /* group quota inode */
137 __uint16_t sb_qflags; /* quota flags */
138 __uint8_t sb_flags; /* misc. flags */
139 __uint8_t sb_shared_vn; /* shared version number */
140 xfs_extlen_t sb_inoalignmt; /* inode chunk alignment, fsblocks */
141 __uint32_t sb_unit; /* stripe or raid unit */
142 __uint32_t sb_width; /* stripe or raid width */
143 __uint8_t sb_dirblklog; /* log2 of dir block size (fsbs) */
144 __uint8_t sb_logsectlog; /* log2 of the log sector size */
145 __uint16_t sb_logsectsize; /* sector size for the log, bytes */
146 __uint32_t sb_logsunit; /* stripe unit size for the log */
147 __uint32_t sb_features2; /* additional feature bits */
151 * Superblock - on disk version. Must match the in core version below.
153 typedef struct xfs_dsb {
154 __be32 sb_magicnum; /* magic number == XFS_SB_MAGIC */
155 __be32 sb_blocksize; /* logical block size, bytes */
156 __be64 sb_dblocks; /* number of data blocks */
157 __be64 sb_rblocks; /* number of realtime blocks */
158 __be64 sb_rextents; /* number of realtime extents */
159 uuid_t sb_uuid; /* file system unique id */
160 __be64 sb_logstart; /* starting block of log if internal */
161 __be64 sb_rootino; /* root inode number */
162 __be64 sb_rbmino; /* bitmap inode for realtime extents */
163 __be64 sb_rsumino; /* summary inode for rt bitmap */
164 __be32 sb_rextsize; /* realtime extent size, blocks */
165 __be32 sb_agblocks; /* size of an allocation group */
166 __be32 sb_agcount; /* number of allocation groups */
167 __be32 sb_rbmblocks; /* number of rt bitmap blocks */
168 __be32 sb_logblocks; /* number of log blocks */
169 __be16 sb_versionnum; /* header version == XFS_SB_VERSION */
170 __be16 sb_sectsize; /* volume sector size, bytes */
171 __be16 sb_inodesize; /* inode size, bytes */
172 __be16 sb_inopblock; /* inodes per block */
173 char sb_fname[12]; /* file system name */
174 __u8 sb_blocklog; /* log2 of sb_blocksize */
175 __u8 sb_sectlog; /* log2 of sb_sectsize */
176 __u8 sb_inodelog; /* log2 of sb_inodesize */
177 __u8 sb_inopblog; /* log2 of sb_inopblock */
178 __u8 sb_agblklog; /* log2 of sb_agblocks (rounded up) */
179 __u8 sb_rextslog; /* log2 of sb_rextents */
180 __u8 sb_inprogress; /* mkfs is in progress, don't mount */
181 __u8 sb_imax_pct; /* max % of fs for inode space */
184 * These fields must remain contiguous. If you really
185 * want to change their layout, make sure you fix the
186 * code in xfs_trans_apply_sb_deltas().
188 __be64 sb_icount; /* allocated inodes */
189 __be64 sb_ifree; /* free inodes */
190 __be64 sb_fdblocks; /* free data blocks */
191 __be64 sb_frextents; /* free realtime extents */
193 * End contiguous fields.
195 __be64 sb_uquotino; /* user quota inode */
196 __be64 sb_gquotino; /* group quota inode */
197 __be16 sb_qflags; /* quota flags */
198 __u8 sb_flags; /* misc. flags */
199 __u8 sb_shared_vn; /* shared version number */
200 __be32 sb_inoalignmt; /* inode chunk alignment, fsblocks */
201 __be32 sb_unit; /* stripe or raid unit */
202 __be32 sb_width; /* stripe or raid width */
203 __u8 sb_dirblklog; /* log2 of dir block size (fsbs) */
204 __u8 sb_logsectlog; /* log2 of the log sector size */
205 __be16 sb_logsectsize; /* sector size for the log, bytes */
206 __be32 sb_logsunit; /* stripe unit size for the log */
207 __be32 sb_features2; /* additional feature bits */
211 * Sequence number values for the fields.
214 XFS_SBS_MAGICNUM, XFS_SBS_BLOCKSIZE, XFS_SBS_DBLOCKS, XFS_SBS_RBLOCKS,
215 XFS_SBS_REXTENTS, XFS_SBS_UUID, XFS_SBS_LOGSTART, XFS_SBS_ROOTINO,
216 XFS_SBS_RBMINO, XFS_SBS_RSUMINO, XFS_SBS_REXTSIZE, XFS_SBS_AGBLOCKS,
217 XFS_SBS_AGCOUNT, XFS_SBS_RBMBLOCKS, XFS_SBS_LOGBLOCKS,
218 XFS_SBS_VERSIONNUM, XFS_SBS_SECTSIZE, XFS_SBS_INODESIZE,
219 XFS_SBS_INOPBLOCK, XFS_SBS_FNAME, XFS_SBS_BLOCKLOG,
220 XFS_SBS_SECTLOG, XFS_SBS_INODELOG, XFS_SBS_INOPBLOG, XFS_SBS_AGBLKLOG,
221 XFS_SBS_REXTSLOG, XFS_SBS_INPROGRESS, XFS_SBS_IMAX_PCT, XFS_SBS_ICOUNT,
222 XFS_SBS_IFREE, XFS_SBS_FDBLOCKS, XFS_SBS_FREXTENTS, XFS_SBS_UQUOTINO,
223 XFS_SBS_GQUOTINO, XFS_SBS_QFLAGS, XFS_SBS_FLAGS, XFS_SBS_SHARED_VN,
224 XFS_SBS_INOALIGNMT, XFS_SBS_UNIT, XFS_SBS_WIDTH, XFS_SBS_DIRBLKLOG,
225 XFS_SBS_LOGSECTLOG, XFS_SBS_LOGSECTSIZE, XFS_SBS_LOGSUNIT,
231 * Mask values, defined based on the xfs_sb_field_t values.
232 * Only define the ones we're using.
234 #define XFS_SB_MVAL(x) (1LL << XFS_SBS_ ## x)
235 #define XFS_SB_UUID XFS_SB_MVAL(UUID)
236 #define XFS_SB_FNAME XFS_SB_MVAL(FNAME)
237 #define XFS_SB_ROOTINO XFS_SB_MVAL(ROOTINO)
238 #define XFS_SB_RBMINO XFS_SB_MVAL(RBMINO)
239 #define XFS_SB_RSUMINO XFS_SB_MVAL(RSUMINO)
240 #define XFS_SB_VERSIONNUM XFS_SB_MVAL(VERSIONNUM)
241 #define XFS_SB_UQUOTINO XFS_SB_MVAL(UQUOTINO)
242 #define XFS_SB_GQUOTINO XFS_SB_MVAL(GQUOTINO)
243 #define XFS_SB_QFLAGS XFS_SB_MVAL(QFLAGS)
244 #define XFS_SB_SHARED_VN XFS_SB_MVAL(SHARED_VN)
245 #define XFS_SB_UNIT XFS_SB_MVAL(UNIT)
246 #define XFS_SB_WIDTH XFS_SB_MVAL(WIDTH)
247 #define XFS_SB_ICOUNT XFS_SB_MVAL(ICOUNT)
248 #define XFS_SB_IFREE XFS_SB_MVAL(IFREE)
249 #define XFS_SB_FDBLOCKS XFS_SB_MVAL(FDBLOCKS)
250 #define XFS_SB_FEATURES2 XFS_SB_MVAL(FEATURES2)
251 #define XFS_SB_NUM_BITS ((int)XFS_SBS_FIELDCOUNT)
252 #define XFS_SB_ALL_BITS ((1LL << XFS_SB_NUM_BITS) - 1)
253 #define XFS_SB_MOD_BITS \
254 (XFS_SB_UUID | XFS_SB_ROOTINO | XFS_SB_RBMINO | XFS_SB_RSUMINO | \
255 XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | XFS_SB_GQUOTINO | \
256 XFS_SB_QFLAGS | XFS_SB_SHARED_VN | XFS_SB_UNIT | XFS_SB_WIDTH | \
257 XFS_SB_ICOUNT | XFS_SB_IFREE | XFS_SB_FDBLOCKS | XFS_SB_FEATURES2)
261 * Misc. Flags - warning - these will be cleared by xfs_repair unless
262 * a feature bit is set when the flag is used.
264 #define XFS_SBF_NOFLAGS 0x00 /* no flags set */
265 #define XFS_SBF_READONLY 0x01 /* only read-only mounts allowed */
268 * define max. shared version we can interoperate with
270 #define XFS_SB_MAX_SHARED_VN 0
272 #define XFS_SB_VERSION_NUM(sbp) ((sbp)->sb_versionnum & XFS_SB_VERSION_NUMBITS)
274 #define XFS_SB_GOOD_VERSION(sbp) xfs_sb_good_version(sbp)
276 static inline int xfs_sb_good_version(xfs_sb_t *sbp)
278 return (((sbp->sb_versionnum >= XFS_SB_VERSION_1) && \
279 (sbp->sb_versionnum <= XFS_SB_VERSION_3)) || \
280 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
281 !((sbp->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS) || \
282 ((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) && \
283 (sbp->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS))) && \
284 (sbp->sb_shared_vn <= XFS_SB_MAX_SHARED_VN)));
287 static inline int xfs_sb_good_version(xfs_sb_t *sbp)
289 return (((sbp->sb_versionnum >= XFS_SB_VERSION_1) && \
290 (sbp->sb_versionnum <= XFS_SB_VERSION_3)) || \
291 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
292 !((sbp->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS) || \
293 ((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) && \
294 (sbp->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS))) && \
295 (!(sbp->sb_versionnum & XFS_SB_VERSION_SHAREDBIT) || \
296 (sbp->sb_shared_vn <= XFS_SB_MAX_SHARED_VN))));
298 #endif /* __KERNEL__ */
300 #define XFS_SB_VERSION_TONEW(v) xfs_sb_version_tonew(v)
301 static inline unsigned xfs_sb_version_tonew(unsigned v)
303 return ((((v) == XFS_SB_VERSION_1) ? \
305 (((v) == XFS_SB_VERSION_2) ? \
306 XFS_SB_VERSION_ATTRBIT : \
307 (XFS_SB_VERSION_ATTRBIT | XFS_SB_VERSION_NLINKBIT))) | \
311 #define XFS_SB_VERSION_TOOLD(v) xfs_sb_version_toold(v)
312 static inline unsigned xfs_sb_version_toold(unsigned v)
314 return (((v) & (XFS_SB_VERSION_QUOTABIT | XFS_SB_VERSION_ALIGNBIT)) ? \
316 (((v) & XFS_SB_VERSION_NLINKBIT) ? \
318 (((v) & XFS_SB_VERSION_ATTRBIT) ? \
323 #define XFS_SB_VERSION_HASATTR(sbp) xfs_sb_version_hasattr(sbp)
324 static inline int xfs_sb_version_hasattr(xfs_sb_t *sbp)
326 return ((sbp)->sb_versionnum == XFS_SB_VERSION_2) || \
327 ((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \
328 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
329 ((sbp)->sb_versionnum & XFS_SB_VERSION_ATTRBIT));
332 #define XFS_SB_VERSION_ADDATTR(sbp) xfs_sb_version_addattr(sbp)
333 static inline void xfs_sb_version_addattr(xfs_sb_t *sbp)
335 (sbp)->sb_versionnum = (((sbp)->sb_versionnum == XFS_SB_VERSION_1) ? \
337 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) ? \
338 ((sbp)->sb_versionnum | XFS_SB_VERSION_ATTRBIT) : \
339 (XFS_SB_VERSION_4 | XFS_SB_VERSION_ATTRBIT)));
342 #define XFS_SB_VERSION_HASNLINK(sbp) xfs_sb_version_hasnlink(sbp)
343 static inline int xfs_sb_version_hasnlink(xfs_sb_t *sbp)
345 return ((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \
346 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
347 ((sbp)->sb_versionnum & XFS_SB_VERSION_NLINKBIT));
350 #define XFS_SB_VERSION_ADDNLINK(sbp) xfs_sb_version_addnlink(sbp)
351 static inline void xfs_sb_version_addnlink(xfs_sb_t *sbp)
353 (sbp)->sb_versionnum = ((sbp)->sb_versionnum <= XFS_SB_VERSION_2 ? \
355 ((sbp)->sb_versionnum | XFS_SB_VERSION_NLINKBIT));
358 #define XFS_SB_VERSION_HASQUOTA(sbp) xfs_sb_version_hasquota(sbp)
359 static inline int xfs_sb_version_hasquota(xfs_sb_t *sbp)
361 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
362 ((sbp)->sb_versionnum & XFS_SB_VERSION_QUOTABIT);
365 #define XFS_SB_VERSION_ADDQUOTA(sbp) xfs_sb_version_addquota(sbp)
366 static inline void xfs_sb_version_addquota(xfs_sb_t *sbp)
368 (sbp)->sb_versionnum = \
369 (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 ? \
370 ((sbp)->sb_versionnum | XFS_SB_VERSION_QUOTABIT) : \
371 (XFS_SB_VERSION_TONEW((sbp)->sb_versionnum) | \
372 XFS_SB_VERSION_QUOTABIT));
375 #define XFS_SB_VERSION_HASALIGN(sbp) xfs_sb_version_hasalign(sbp)
376 static inline int xfs_sb_version_hasalign(xfs_sb_t *sbp)
378 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
379 ((sbp)->sb_versionnum & XFS_SB_VERSION_ALIGNBIT);
382 #define XFS_SB_VERSION_SUBALIGN(sbp) xfs_sb_version_subalign(sbp)
383 static inline void xfs_sb_version_subalign(xfs_sb_t *sbp)
385 (sbp)->sb_versionnum = \
386 XFS_SB_VERSION_TOOLD((sbp)->sb_versionnum & ~XFS_SB_VERSION_ALIGNBIT);
389 #define XFS_SB_VERSION_HASDALIGN(sbp) xfs_sb_version_hasdalign(sbp)
390 static inline int xfs_sb_version_hasdalign(xfs_sb_t *sbp)
392 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
393 ((sbp)->sb_versionnum & XFS_SB_VERSION_DALIGNBIT);
396 #define XFS_SB_VERSION_ADDDALIGN(sbp) xfs_sb_version_adddalign(sbp)
397 static inline int xfs_sb_version_adddalign(xfs_sb_t *sbp)
399 return (sbp)->sb_versionnum = \
400 ((sbp)->sb_versionnum | XFS_SB_VERSION_DALIGNBIT);
403 #define XFS_SB_VERSION_HASSHARED(sbp) xfs_sb_version_hasshared(sbp)
404 static inline int xfs_sb_version_hasshared(xfs_sb_t *sbp)
406 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
407 ((sbp)->sb_versionnum & XFS_SB_VERSION_SHAREDBIT);
410 #define XFS_SB_VERSION_ADDSHARED(sbp) xfs_sb_version_addshared(sbp)
411 static inline int xfs_sb_version_addshared(xfs_sb_t *sbp)
413 return (sbp)->sb_versionnum = \
414 ((sbp)->sb_versionnum | XFS_SB_VERSION_SHAREDBIT);
417 #define XFS_SB_VERSION_SUBSHARED(sbp) xfs_sb_version_subshared(sbp)
418 static inline int xfs_sb_version_subshared(xfs_sb_t *sbp)
420 return (sbp)->sb_versionnum = \
421 ((sbp)->sb_versionnum & ~XFS_SB_VERSION_SHAREDBIT);
424 #define XFS_SB_VERSION_HASDIRV2(sbp) xfs_sb_version_hasdirv2(sbp)
425 static inline int xfs_sb_version_hasdirv2(xfs_sb_t *sbp)
427 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
428 ((sbp)->sb_versionnum & XFS_SB_VERSION_DIRV2BIT);
431 #define XFS_SB_VERSION_HASLOGV2(sbp) xfs_sb_version_haslogv2(sbp)
432 static inline int xfs_sb_version_haslogv2(xfs_sb_t *sbp)
434 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
435 ((sbp)->sb_versionnum & XFS_SB_VERSION_LOGV2BIT);
438 #define XFS_SB_VERSION_HASEXTFLGBIT(sbp) xfs_sb_version_hasextflgbit(sbp)
439 static inline int xfs_sb_version_hasextflgbit(xfs_sb_t *sbp)
441 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
442 ((sbp)->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT);
445 #define XFS_SB_VERSION_ADDEXTFLGBIT(sbp) xfs_sb_version_addextflgbit(sbp)
446 static inline int xfs_sb_version_addextflgbit(xfs_sb_t *sbp)
448 return (sbp)->sb_versionnum = \
449 ((sbp)->sb_versionnum | XFS_SB_VERSION_EXTFLGBIT);
452 #define XFS_SB_VERSION_SUBEXTFLGBIT(sbp) xfs_sb_version_subextflgbit(sbp)
453 static inline int xfs_sb_version_subextflgbit(xfs_sb_t *sbp)
455 return (sbp)->sb_versionnum = \
456 ((sbp)->sb_versionnum & ~XFS_SB_VERSION_EXTFLGBIT);
459 #define XFS_SB_VERSION_HASSECTOR(sbp) xfs_sb_version_hassector(sbp)
460 static inline int xfs_sb_version_hassector(xfs_sb_t *sbp)
462 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
463 ((sbp)->sb_versionnum & XFS_SB_VERSION_SECTORBIT);
466 #define XFS_SB_VERSION_HASMOREBITS(sbp) xfs_sb_version_hasmorebits(sbp)
467 static inline int xfs_sb_version_hasmorebits(xfs_sb_t *sbp)
469 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
470 ((sbp)->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT);
474 * sb_features2 bit version macros.
476 * For example, for a bit defined as XFS_SB_VERSION2_FUNBIT, has a macro:
478 * SB_VERSION_HASFUNBIT(xfs_sb_t *sbp)
479 * ((XFS_SB_VERSION_HASMOREBITS(sbp) &&
480 * ((sbp)->sb_features2 & XFS_SB_VERSION2_FUNBIT)
483 static inline int xfs_sb_version_haslazysbcount(xfs_sb_t *sbp)
485 return (XFS_SB_VERSION_HASMOREBITS(sbp) && \
486 ((sbp)->sb_features2 & XFS_SB_VERSION2_LAZYSBCOUNTBIT));
489 #define XFS_SB_VERSION_HASATTR2(sbp) xfs_sb_version_hasattr2(sbp)
490 static inline int xfs_sb_version_hasattr2(xfs_sb_t *sbp)
492 return (XFS_SB_VERSION_HASMOREBITS(sbp)) && \
493 ((sbp)->sb_features2 & XFS_SB_VERSION2_ATTR2BIT);
496 #define XFS_SB_VERSION_ADDATTR2(sbp) xfs_sb_version_addattr2(sbp)
497 static inline void xfs_sb_version_addattr2(xfs_sb_t *sbp)
499 ((sbp)->sb_versionnum = \
500 ((sbp)->sb_versionnum | XFS_SB_VERSION_MOREBITSBIT), \
501 ((sbp)->sb_features2 = \
502 ((sbp)->sb_features2 | XFS_SB_VERSION2_ATTR2BIT)));
506 * end of superblock version macros
509 #define XFS_SB_DADDR ((xfs_daddr_t)0) /* daddr in filesystem/ag */
510 #define XFS_SB_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_SB_DADDR)
511 #define XFS_BUF_TO_SBP(bp) ((xfs_dsb_t *)XFS_BUF_PTR(bp))
513 #define XFS_HDR_BLOCK(mp,d) ((xfs_agblock_t)XFS_BB_TO_FSBT(mp,d))
514 #define XFS_DADDR_TO_FSB(mp,d) XFS_AGB_TO_FSB(mp, \
515 XFS_DADDR_TO_AGNO(mp,d), XFS_DADDR_TO_AGBNO(mp,d))
516 #define XFS_FSB_TO_DADDR(mp,fsbno) XFS_AGB_TO_DADDR(mp, \
517 XFS_FSB_TO_AGNO(mp,fsbno), XFS_FSB_TO_AGBNO(mp,fsbno))
520 * File system sector to basic block conversions.
522 #define XFS_FSS_TO_BB(mp,sec) ((sec) << (mp)->m_sectbb_log)
525 * File system block to basic block conversions.
527 #define XFS_FSB_TO_BB(mp,fsbno) ((fsbno) << (mp)->m_blkbb_log)
528 #define XFS_BB_TO_FSB(mp,bb) \
529 (((bb) + (XFS_FSB_TO_BB(mp,1) - 1)) >> (mp)->m_blkbb_log)
530 #define XFS_BB_TO_FSBT(mp,bb) ((bb) >> (mp)->m_blkbb_log)
531 #define XFS_BB_FSB_OFFSET(mp,bb) ((bb) & ((mp)->m_bsize - 1))
534 * File system block to byte conversions.
536 #define XFS_FSB_TO_B(mp,fsbno) ((xfs_fsize_t)(fsbno) << (mp)->m_sb.sb_blocklog)
537 #define XFS_B_TO_FSB(mp,b) \
538 ((((__uint64_t)(b)) + (mp)->m_blockmask) >> (mp)->m_sb.sb_blocklog)
539 #define XFS_B_TO_FSBT(mp,b) (((__uint64_t)(b)) >> (mp)->m_sb.sb_blocklog)
540 #define XFS_B_FSB_OFFSET(mp,b) ((b) & (mp)->m_blockmask)
542 #endif /* __XFS_SB_H__ */