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[XFS] Remove xfs_macros.c, xfs_macros.h, rework headers a whole lot.
[net-next-2.6.git] / fs / xfs / xfs_sb.h
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1da177e4 1/*
d8cc890d 2 * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
1da177e4
LT		 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_SB_H__
33#define __XFS_SB_H__
34
35/*
36 * Super block
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.
39 */
40
41struct xfs_buf;
42struct xfs_mount;
43
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 | \
d8cc890d
NS		 75 XFS_SB_VERSION_SECTORBIT | \
76 XFS_SB_VERSION_MOREBITSBIT)
1da177e4
LT		 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) || \
87 (morebits)) ? \
88 (XFS_SB_VERSION_4 | \
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)) : \
96 XFS_SB_VERSION_1)
97
98/*
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.
102 *
103 * These defines represent bits in sb_features2.
104 */
105#define XFS_SB_VERSION2_REALFBITS 0x00ffffff /* Mask: features */
106#define XFS_SB_VERSION2_RESERVED1BIT 0x00000001
d8cc890d
NS		 107#define XFS_SB_VERSION2_RESERVED2BIT 0x00000002
108#define XFS_SB_VERSION2_RESERVED4BIT 0x00000004
109#define XFS_SB_VERSION2_ATTR2BIT 0x00000008 /* Inline attr rework */
1da177e4
LT		 110#define XFS_SB_VERSION2_SASHFBITS 0xff000000 /* Mask: features that
111 require changing
112 PROM and SASH */
113
114#define XFS_SB_VERSION2_OKREALFBITS \
d8cc890d 115 (XFS_SB_VERSION2_ATTR2BIT)
1da177e4
LT		 116#define XFS_SB_VERSION2_OKSASHFBITS \
117 (0)
118#define XFS_SB_VERSION2_OKREALBITS \
119 (XFS_SB_VERSION2_OKREALFBITS | \
120 XFS_SB_VERSION2_OKSASHFBITS )
121
122/*
123 * mkfs macro to set up sb_features2 word
124 */
d8cc890d 125#define XFS_SB_VERSION2_MKFS(resvd1, sbcntr) 0
1da177e4
LT		 126
127typedef struct xfs_sb
128{
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 */
157 /* statistics */
158 /*
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().
162 */
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 */
167 /*
168 * End contiguous fields.
169 */
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 */
d8cc890d 182 __uint32_t sb_features2; /* additional feature bits */
1da177e4
LT		 183} xfs_sb_t;
184
185/*
186 * Sequence number values for the fields.
187 */
188typedef enum {
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,
201 XFS_SBS_FEATURES2,
202 XFS_SBS_FIELDCOUNT
203} xfs_sb_field_t;
204
205/*
206 * Mask values, defined based on the xfs_sb_field_t values.
207 * Only define the ones we're using.
208 */
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)
d8cc890d 222#define XFS_SB_FEATURES2 XFS_SB_MVAL(FEATURES2)
1da177e4
LT		 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 | \
d8cc890d
NS		 228 XFS_SB_QFLAGS | XFS_SB_SHARED_VN | XFS_SB_UNIT | XFS_SB_WIDTH | \
229 XFS_SB_FEATURES2)
230
1da177e4
LT		 231
232/*
233 * Misc. Flags - warning - these will be cleared by xfs_repair unless
234 * a feature bit is set when the flag is used.
235 */
236#define XFS_SBF_NOFLAGS 0x00 /* no flags set */
237#define XFS_SBF_READONLY 0x01 /* only read-only mounts allowed */
238
239/*
240 * define max. shared version we can interoperate with
241 */
242#define XFS_SB_MAX_SHARED_VN 0
243
1da177e4 244#define XFS_SB_VERSION_NUM(sbp) ((sbp)->sb_versionnum & XFS_SB_VERSION_NUMBITS)
1da177e4 245
1da177e4 246#define XFS_SB_GOOD_VERSION(sbp) xfs_sb_good_version(sbp)
1da177e4 247#ifdef __KERNEL__
a844f451
NS		 248static inline int xfs_sb_good_version(xfs_sb_t *sbp)
249{
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)));
257}
258#else
259static inline int xfs_sb_good_version(xfs_sb_t *sbp)
260{
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))));
269}
1da177e4 270#endif /* __KERNEL__ */
1da177e4
LT		 271
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)))
277
1da177e4 278#define XFS_SB_VERSION_TONEW(v) xfs_sb_version_tonew(v)
a844f451
NS		 279static inline unsigned xfs_sb_version_tonew(unsigned v)
280{
281 return ((((v) == XFS_SB_VERSION_1) ? \
1da177e4
LT		 282 0 : \
283 (((v) == XFS_SB_VERSION_2) ? \
284 XFS_SB_VERSION_ATTRBIT : \
285 (XFS_SB_VERSION_ATTRBIT | XFS_SB_VERSION_NLINKBIT))) | \
a844f451
NS		 286 XFS_SB_VERSION_4);
287}
1da177e4 288
1da177e4 289#define XFS_SB_VERSION_TOOLD(v) xfs_sb_version_toold(v)
a844f451
NS		 290static inline unsigned xfs_sb_version_toold(unsigned v)
291{
292 return (((v) & (XFS_SB_VERSION_QUOTABIT | XFS_SB_VERSION_ALIGNBIT)) ? \
1da177e4
LT		 293 0 : \
294 (((v) & XFS_SB_VERSION_NLINKBIT) ? \
295 XFS_SB_VERSION_3 : \
296 (((v) & XFS_SB_VERSION_ATTRBIT) ? \
297 XFS_SB_VERSION_2 : \
a844f451
NS		 298 XFS_SB_VERSION_1)));
299}
1da177e4 300
1da177e4 301#define XFS_SB_VERSION_HASATTR(sbp) xfs_sb_version_hasattr(sbp)
a844f451
NS		 302static inline int xfs_sb_version_hasattr(xfs_sb_t *sbp)
303{
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));
308}
1da177e4 309
1da177e4 310#define XFS_SB_VERSION_ADDATTR(sbp) xfs_sb_version_addattr(sbp)
a844f451
NS		 311static inline void xfs_sb_version_addattr(xfs_sb_t *sbp)
312{
313 (sbp)->sb_versionnum = (((sbp)->sb_versionnum == XFS_SB_VERSION_1) ? \
1da177e4
LT		 314 XFS_SB_VERSION_2 : \
315 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) ? \
316 ((sbp)->sb_versionnum | XFS_SB_VERSION_ATTRBIT) : \
a844f451
NS		 317 (XFS_SB_VERSION_4 | XFS_SB_VERSION_ATTRBIT)));
318}
1da177e4 319
1da177e4 320#define XFS_SB_VERSION_HASNLINK(sbp) xfs_sb_version_hasnlink(sbp)
a844f451
NS		 321static inline int xfs_sb_version_hasnlink(xfs_sb_t *sbp)
322{
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));
326}
1da177e4 327
1da177e4 328#define XFS_SB_VERSION_ADDNLINK(sbp) xfs_sb_version_addnlink(sbp)
a844f451
NS		 329static inline void xfs_sb_version_addnlink(xfs_sb_t *sbp)
330{
331 (sbp)->sb_versionnum = ((sbp)->sb_versionnum <= XFS_SB_VERSION_2 ? \
1da177e4 332 XFS_SB_VERSION_3 : \
a844f451
NS		 333 ((sbp)->sb_versionnum | XFS_SB_VERSION_NLINKBIT));
334}
1da177e4 335
1da177e4 336#define XFS_SB_VERSION_HASQUOTA(sbp) xfs_sb_version_hasquota(sbp)
a844f451
NS		 337static inline int xfs_sb_version_hasquota(xfs_sb_t *sbp)
338{
339 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
340 ((sbp)->sb_versionnum & XFS_SB_VERSION_QUOTABIT);
341}
1da177e4 342
1da177e4 343#define XFS_SB_VERSION_ADDQUOTA(sbp) xfs_sb_version_addquota(sbp)
a844f451
NS		 344static inline void xfs_sb_version_addquota(xfs_sb_t *sbp)
345{
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));
351}
352
1da177e4 353#define XFS_SB_VERSION_HASALIGN(sbp) xfs_sb_version_hasalign(sbp)
a844f451
NS		 354static inline int xfs_sb_version_hasalign(xfs_sb_t *sbp)
355{
356 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
357 ((sbp)->sb_versionnum & XFS_SB_VERSION_ALIGNBIT);
358}
1da177e4 359
1da177e4 360#define XFS_SB_VERSION_SUBALIGN(sbp) xfs_sb_version_subalign(sbp)
a844f451
NS		 361static inline void xfs_sb_version_subalign(xfs_sb_t *sbp)
362{
363 (sbp)->sb_versionnum = \
364 XFS_SB_VERSION_TOOLD((sbp)->sb_versionnum & ~XFS_SB_VERSION_ALIGNBIT);
365}
1da177e4 366
1da177e4 367#define XFS_SB_VERSION_HASDALIGN(sbp) xfs_sb_version_hasdalign(sbp)
a844f451
NS		 368static inline int xfs_sb_version_hasdalign(xfs_sb_t *sbp)
369{
370 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
371 ((sbp)->sb_versionnum & XFS_SB_VERSION_DALIGNBIT);
372}
1da177e4 373
1da177e4 374#define XFS_SB_VERSION_ADDDALIGN(sbp) xfs_sb_version_adddalign(sbp)
a844f451
NS		 375static inline int xfs_sb_version_adddalign(xfs_sb_t *sbp)
376{
377 return (sbp)->sb_versionnum = \
378 ((sbp)->sb_versionnum | XFS_SB_VERSION_DALIGNBIT);
379}
1da177e4 380
1da177e4 381#define XFS_SB_VERSION_HASSHARED(sbp) xfs_sb_version_hasshared(sbp)
a844f451
NS		 382static inline int xfs_sb_version_hasshared(xfs_sb_t *sbp)
383{
384 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
385 ((sbp)->sb_versionnum & XFS_SB_VERSION_SHAREDBIT);
386}
1da177e4 387
1da177e4 388#define XFS_SB_VERSION_ADDSHARED(sbp) xfs_sb_version_addshared(sbp)
a844f451
NS		 389static inline int xfs_sb_version_addshared(xfs_sb_t *sbp)
390{
391 return (sbp)->sb_versionnum = \
392 ((sbp)->sb_versionnum | XFS_SB_VERSION_SHAREDBIT);
393}
1da177e4 394
1da177e4 395#define XFS_SB_VERSION_SUBSHARED(sbp) xfs_sb_version_subshared(sbp)
a844f451
NS		 396static inline int xfs_sb_version_subshared(xfs_sb_t *sbp)
397{
398 return (sbp)->sb_versionnum = \
399 ((sbp)->sb_versionnum & ~XFS_SB_VERSION_SHAREDBIT);
400}
1da177e4 401
1da177e4 402#define XFS_SB_VERSION_HASDIRV2(sbp) xfs_sb_version_hasdirv2(sbp)
a844f451
NS		 403static inline int xfs_sb_version_hasdirv2(xfs_sb_t *sbp)
404{
405 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
406 ((sbp)->sb_versionnum & XFS_SB_VERSION_DIRV2BIT);
407}
1da177e4 408
1da177e4 409#define XFS_SB_VERSION_HASLOGV2(sbp) xfs_sb_version_haslogv2(sbp)
a844f451
NS		 410static inline int xfs_sb_version_haslogv2(xfs_sb_t *sbp)
411{
412 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
413 ((sbp)->sb_versionnum & XFS_SB_VERSION_LOGV2BIT);
414}
1da177e4 415
1da177e4 416#define XFS_SB_VERSION_HASEXTFLGBIT(sbp) xfs_sb_version_hasextflgbit(sbp)
a844f451
NS		 417static inline int xfs_sb_version_hasextflgbit(xfs_sb_t *sbp)
418{
419 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
420 ((sbp)->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT);
421}
1da177e4 422
1da177e4 423#define XFS_SB_VERSION_ADDEXTFLGBIT(sbp) xfs_sb_version_addextflgbit(sbp)
a844f451
NS		 424static inline int xfs_sb_version_addextflgbit(xfs_sb_t *sbp)
425{
426 return (sbp)->sb_versionnum = \
427 ((sbp)->sb_versionnum | XFS_SB_VERSION_EXTFLGBIT);
428}
1da177e4 429
1da177e4 430#define XFS_SB_VERSION_SUBEXTFLGBIT(sbp) xfs_sb_version_subextflgbit(sbp)
a844f451
NS		 431static inline int xfs_sb_version_subextflgbit(xfs_sb_t *sbp)
432{
433 return (sbp)->sb_versionnum = \
434 ((sbp)->sb_versionnum & ~XFS_SB_VERSION_EXTFLGBIT);
435}
1da177e4 436
1da177e4 437#define XFS_SB_VERSION_HASSECTOR(sbp) xfs_sb_version_hassector(sbp)
a844f451
NS		 438static inline int xfs_sb_version_hassector(xfs_sb_t *sbp)
439{
440 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
441 ((sbp)->sb_versionnum & XFS_SB_VERSION_SECTORBIT);
442}
1da177e4 443
1da177e4 444#define XFS_SB_VERSION_HASMOREBITS(sbp) xfs_sb_version_hasmorebits(sbp)
a844f451
NS		 445static inline int xfs_sb_version_hasmorebits(xfs_sb_t *sbp)
446{
447 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
448 ((sbp)->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT);
449}
1da177e4
LT		 450
451/*
452 * sb_features2 bit version macros.
453 *
d8cc890d 454 * For example, for a bit defined as XFS_SB_VERSION2_FUNBIT, has a macro:
1da177e4 455 *
d8cc890d 456 * SB_VERSION_HASFUNBIT(xfs_sb_t *sbp)
1da177e4 457 * ((XFS_SB_VERSION_HASMOREBITS(sbp) &&
d8cc890d 458 * ((sbp)->sb_features2 & XFS_SB_VERSION2_FUNBIT)
1da177e4 459 */
a844f451 460
d8cc890d 461#define XFS_SB_VERSION_HASATTR2(sbp) xfs_sb_version_hasattr2(sbp)
a844f451
NS		 462static inline int xfs_sb_version_hasattr2(xfs_sb_t *sbp)
463{
464 return (XFS_SB_VERSION_HASMOREBITS(sbp)) && \
465 ((sbp)->sb_features2 & XFS_SB_VERSION2_ATTR2BIT);
466}
1da177e4 467
d8cc890d 468#define XFS_SB_VERSION_ADDATTR2(sbp) xfs_sb_version_addattr2(sbp)
a844f451
NS		 469static inline void xfs_sb_version_addattr2(xfs_sb_t *sbp)
470{
d8cc890d
NS		 471 ((sbp)->sb_versionnum = \
472 ((sbp)->sb_versionnum | XFS_SB_VERSION_MOREBITSBIT), \
473 ((sbp)->sb_features2 = \
a844f451
NS		 474 ((sbp)->sb_features2 | XFS_SB_VERSION2_ATTR2BIT)));
475}
476
1da177e4
LT		 477/*
478 * end of superblock version macros
479 */
480
a844f451 481#define XFS_SB_DADDR ((xfs_daddr_t)0) /* daddr in filesystem/ag */
1da177e4 482#define XFS_SB_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_SB_DADDR)
1da177e4 483#define XFS_BUF_TO_SBP(bp) ((xfs_sb_t *)XFS_BUF_PTR(bp))
a844f451
NS		 484
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))
1da177e4
LT		 490
491/*
492 * File system sector to basic block conversions.
493 */
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)
498
499/*
500 * File system sector to byte conversions.
501 */
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)
504
505/*
506 * File system block to basic block conversions.
507 */
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))
513
514/*
515 * File system block to byte conversions.
516 */
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)
522
523#endif /* __XFS_SB_H__ */
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