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gerrit-public.fairphone.software / kernel / msm / d8cc890d4095f1eaa7f411a85051015b21262b12 / . / fs / xfs / xfs_sb.h
blob: 01c5a5ff230e77d9a66fec88a43bed97c82acc36 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1/*
Nathan Scottd8cc8902005-11-02 10:34:53 +1100[diff] [blame^]2 * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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 | \
Nathan Scottd8cc8902005-11-02 10:34:53 +1100[diff] [blame^]75 XFS_SB_VERSION_SECTORBIT | \
76 XFS_SB_VERSION_MOREBITSBIT)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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
Nathan Scottd8cc8902005-11-02 10:34:53 +1100[diff] [blame^]107#define XFS_SB_VERSION2_RESERVED2BIT 0x00000002
108#define XFS_SB_VERSION2_RESERVED4BIT 0x00000004
109#define XFS_SB_VERSION2_ATTR2BIT 0x00000008 /* Inline attr rework */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]110#define XFS_SB_VERSION2_SASHFBITS 0xff000000 /* Mask: features that
111 require changing
112 PROM and SASH */
113
114#define XFS_SB_VERSION2_OKREALFBITS \
Nathan Scottd8cc8902005-11-02 10:34:53 +1100[diff] [blame^]115 (XFS_SB_VERSION2_ATTR2BIT)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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 */
Nathan Scottd8cc8902005-11-02 10:34:53 +1100[diff] [blame^]125#define XFS_SB_VERSION2_MKFS(resvd1, sbcntr) 0
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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 */
Nathan Scottd8cc8902005-11-02 10:34:53 +1100[diff] [blame^]182 __uint32_t sb_features2; /* additional feature bits */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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)
Nathan Scottd8cc8902005-11-02 10:34:53 +1100[diff] [blame^]222#define XFS_SB_FEATURES2 XFS_SB_MVAL(FEATURES2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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 | \
Nathan Scottd8cc8902005-11-02 10:34:53 +1100[diff] [blame^]228 XFS_SB_QFLAGS | XFS_SB_SHARED_VN | XFS_SB_UNIT | XFS_SB_WIDTH | \
229 XFS_SB_FEATURES2)
230
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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
244#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_NUM)
245int xfs_sb_version_num(xfs_sb_t *sbp);
246#define XFS_SB_VERSION_NUM(sbp) xfs_sb_version_num(sbp)
247#else
248#define XFS_SB_VERSION_NUM(sbp) ((sbp)->sb_versionnum & XFS_SB_VERSION_NUMBITS)
249#endif
250
251#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_GOOD_VERSION)
252int xfs_sb_good_version(xfs_sb_t *sbp);
253#define XFS_SB_GOOD_VERSION(sbp) xfs_sb_good_version(sbp)
254#else
255#define XFS_SB_GOOD_VERSION_INT(sbp) \
256 ((((sbp)->sb_versionnum >= XFS_SB_VERSION_1) && \
257 ((sbp)->sb_versionnum <= XFS_SB_VERSION_3)) || \
258 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
259 !(((sbp)->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS) || \
260 (((sbp)->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) && \
261 ((sbp)->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS)))
262
263#ifdef __KERNEL__
264#define XFS_SB_GOOD_VERSION(sbp) \
265 (XFS_SB_GOOD_VERSION_INT(sbp) && \
266 (sbp)->sb_shared_vn <= XFS_SB_MAX_SHARED_VN) ))
267#else
268/*
269 * extra 2 paren's here (( to unconfuse paren-matching editors
270 * like vi because XFS_SB_GOOD_VERSION_INT is a partial expression
271 * and the two XFS_SB_GOOD_VERSION's each 2 more close paren's to
272 * complete the expression.
273 */
274#define XFS_SB_GOOD_VERSION(sbp) \
275 (XFS_SB_GOOD_VERSION_INT(sbp) && \
276 (!((sbp)->sb_versionnum & XFS_SB_VERSION_SHAREDBIT) || \
277 (sbp)->sb_shared_vn <= XFS_SB_MAX_SHARED_VN)) ))
278#endif /* __KERNEL__ */
279#endif
280
281#define XFS_SB_GOOD_SASH_VERSION(sbp) \
282 ((((sbp)->sb_versionnum >= XFS_SB_VERSION_1) && \
283 ((sbp)->sb_versionnum <= XFS_SB_VERSION_3)) || \
284 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
285 !((sbp)->sb_versionnum & ~XFS_SB_VERSION_OKSASHBITS)))
286
287#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_TONEW)
288unsigned xfs_sb_version_tonew(unsigned v);
289#define XFS_SB_VERSION_TONEW(v) xfs_sb_version_tonew(v)
290#else
291#define XFS_SB_VERSION_TONEW(v) \
292 ((((v) == XFS_SB_VERSION_1) ? \
293 0 : \
294 (((v) == XFS_SB_VERSION_2) ? \
295 XFS_SB_VERSION_ATTRBIT : \
296 (XFS_SB_VERSION_ATTRBIT | XFS_SB_VERSION_NLINKBIT))) | \
297 XFS_SB_VERSION_4)
298#endif
299
300#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_TOOLD)
301unsigned xfs_sb_version_toold(unsigned v);
302#define XFS_SB_VERSION_TOOLD(v) xfs_sb_version_toold(v)
303#else
304#define XFS_SB_VERSION_TOOLD(v) \
305 (((v) & (XFS_SB_VERSION_QUOTABIT | XFS_SB_VERSION_ALIGNBIT)) ? \
306 0 : \
307 (((v) & XFS_SB_VERSION_NLINKBIT) ? \
308 XFS_SB_VERSION_3 : \
309 (((v) & XFS_SB_VERSION_ATTRBIT) ? \
310 XFS_SB_VERSION_2 : \
311 XFS_SB_VERSION_1)))
312#endif
313
314#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASATTR)
315int xfs_sb_version_hasattr(xfs_sb_t *sbp);
316#define XFS_SB_VERSION_HASATTR(sbp) xfs_sb_version_hasattr(sbp)
317#else
318#define XFS_SB_VERSION_HASATTR(sbp) \
319 (((sbp)->sb_versionnum == XFS_SB_VERSION_2) || \
320 ((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \
321 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
322 ((sbp)->sb_versionnum & XFS_SB_VERSION_ATTRBIT)))
323#endif
324
325#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDATTR)
326void xfs_sb_version_addattr(xfs_sb_t *sbp);
327#define XFS_SB_VERSION_ADDATTR(sbp) xfs_sb_version_addattr(sbp)
328#else
329#define XFS_SB_VERSION_ADDATTR(sbp) \
330 ((sbp)->sb_versionnum = \
331 (((sbp)->sb_versionnum == XFS_SB_VERSION_1) ? \
332 XFS_SB_VERSION_2 : \
333 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) ? \
334 ((sbp)->sb_versionnum | XFS_SB_VERSION_ATTRBIT) : \
335 (XFS_SB_VERSION_4 | XFS_SB_VERSION_ATTRBIT))))
336#endif
337
338#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASNLINK)
339int xfs_sb_version_hasnlink(xfs_sb_t *sbp);
340#define XFS_SB_VERSION_HASNLINK(sbp) xfs_sb_version_hasnlink(sbp)
341#else
342#define XFS_SB_VERSION_HASNLINK(sbp) \
343 (((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \
344 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
345 ((sbp)->sb_versionnum & XFS_SB_VERSION_NLINKBIT)))
346#endif
347
348#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDNLINK)
349void xfs_sb_version_addnlink(xfs_sb_t *sbp);
350#define XFS_SB_VERSION_ADDNLINK(sbp) xfs_sb_version_addnlink(sbp)
351#else
352#define XFS_SB_VERSION_ADDNLINK(sbp) \
353 ((sbp)->sb_versionnum = \
354 ((sbp)->sb_versionnum <= XFS_SB_VERSION_2 ? \
355 XFS_SB_VERSION_3 : \
356 ((sbp)->sb_versionnum | XFS_SB_VERSION_NLINKBIT)))
357#endif
358
359#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASQUOTA)
360int xfs_sb_version_hasquota(xfs_sb_t *sbp);
361#define XFS_SB_VERSION_HASQUOTA(sbp) xfs_sb_version_hasquota(sbp)
362#else
363#define XFS_SB_VERSION_HASQUOTA(sbp) \
364 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
365 ((sbp)->sb_versionnum & XFS_SB_VERSION_QUOTABIT))
366#endif
367
368#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDQUOTA)
369void xfs_sb_version_addquota(xfs_sb_t *sbp);
370#define XFS_SB_VERSION_ADDQUOTA(sbp) xfs_sb_version_addquota(sbp)
371#else
372#define XFS_SB_VERSION_ADDQUOTA(sbp) \
373 ((sbp)->sb_versionnum = \
374 (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 ? \
375 ((sbp)->sb_versionnum | XFS_SB_VERSION_QUOTABIT) : \
376 (XFS_SB_VERSION_TONEW((sbp)->sb_versionnum) | \
377 XFS_SB_VERSION_QUOTABIT)))
378#endif
379
380#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASALIGN)
381int xfs_sb_version_hasalign(xfs_sb_t *sbp);
382#define XFS_SB_VERSION_HASALIGN(sbp) xfs_sb_version_hasalign(sbp)
383#else
384#define XFS_SB_VERSION_HASALIGN(sbp) \
385 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
386 ((sbp)->sb_versionnum & XFS_SB_VERSION_ALIGNBIT))
387#endif
388
389#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_SUBALIGN)
390void xfs_sb_version_subalign(xfs_sb_t *sbp);
391#define XFS_SB_VERSION_SUBALIGN(sbp) xfs_sb_version_subalign(sbp)
392#else
393#define XFS_SB_VERSION_SUBALIGN(sbp) \
394 ((sbp)->sb_versionnum = \
395 XFS_SB_VERSION_TOOLD((sbp)->sb_versionnum & ~XFS_SB_VERSION_ALIGNBIT))
396#endif
397
398#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASDALIGN)
399int xfs_sb_version_hasdalign(xfs_sb_t *sbp);
400#define XFS_SB_VERSION_HASDALIGN(sbp) xfs_sb_version_hasdalign(sbp)
401#else
402#define XFS_SB_VERSION_HASDALIGN(sbp) \
403 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
404 ((sbp)->sb_versionnum & XFS_SB_VERSION_DALIGNBIT))
405#endif
406
407#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDDALIGN)
408int xfs_sb_version_adddalign(xfs_sb_t *sbp);
409#define XFS_SB_VERSION_ADDDALIGN(sbp) xfs_sb_version_adddalign(sbp)
410#else
411#define XFS_SB_VERSION_ADDDALIGN(sbp) \
412 ((sbp)->sb_versionnum = \
413 ((sbp)->sb_versionnum | XFS_SB_VERSION_DALIGNBIT))
414#endif
415
416#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASSHARED)
417int xfs_sb_version_hasshared(xfs_sb_t *sbp);
418#define XFS_SB_VERSION_HASSHARED(sbp) xfs_sb_version_hasshared(sbp)
419#else
420#define XFS_SB_VERSION_HASSHARED(sbp) \
421 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
422 ((sbp)->sb_versionnum & XFS_SB_VERSION_SHAREDBIT))
423#endif
424
425#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDSHARED)
426int xfs_sb_version_addshared(xfs_sb_t *sbp);
427#define XFS_SB_VERSION_ADDSHARED(sbp) xfs_sb_version_addshared(sbp)
428#else
429#define XFS_SB_VERSION_ADDSHARED(sbp) \
430 ((sbp)->sb_versionnum = \
431 ((sbp)->sb_versionnum | XFS_SB_VERSION_SHAREDBIT))
432#endif
433
434#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_SUBSHARED)
435int xfs_sb_version_subshared(xfs_sb_t *sbp);
436#define XFS_SB_VERSION_SUBSHARED(sbp) xfs_sb_version_subshared(sbp)
437#else
438#define XFS_SB_VERSION_SUBSHARED(sbp) \
439 ((sbp)->sb_versionnum = \
440 ((sbp)->sb_versionnum & ~XFS_SB_VERSION_SHAREDBIT))
441#endif
442
443#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASDIRV2)
444int xfs_sb_version_hasdirv2(xfs_sb_t *sbp);
445#define XFS_SB_VERSION_HASDIRV2(sbp) xfs_sb_version_hasdirv2(sbp)
446#else
447#define XFS_SB_VERSION_HASDIRV2(sbp) \
448 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
449 ((sbp)->sb_versionnum & XFS_SB_VERSION_DIRV2BIT))
450#endif
451
452#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASLOGV2)
453int xfs_sb_version_haslogv2(xfs_sb_t *sbp);
454#define XFS_SB_VERSION_HASLOGV2(sbp) xfs_sb_version_haslogv2(sbp)
455#else
456#define XFS_SB_VERSION_HASLOGV2(sbp) \
457 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
458 ((sbp)->sb_versionnum & XFS_SB_VERSION_LOGV2BIT))
459#endif
460
461#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASEXTFLGBIT)
462int xfs_sb_version_hasextflgbit(xfs_sb_t *sbp);
463#define XFS_SB_VERSION_HASEXTFLGBIT(sbp) xfs_sb_version_hasextflgbit(sbp)
464#else
465#define XFS_SB_VERSION_HASEXTFLGBIT(sbp) \
466 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
467 ((sbp)->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT))
468#endif
469
470#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDEXTFLGBIT)
471int xfs_sb_version_addextflgbit(xfs_sb_t *sbp);
472#define XFS_SB_VERSION_ADDEXTFLGBIT(sbp) xfs_sb_version_addextflgbit(sbp)
473#else
474#define XFS_SB_VERSION_ADDEXTFLGBIT(sbp) \
475 ((sbp)->sb_versionnum = \
476 ((sbp)->sb_versionnum | XFS_SB_VERSION_EXTFLGBIT))
477#endif
478
479#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_SUBEXTFLGBIT)
480int xfs_sb_version_subextflgbit(xfs_sb_t *sbp);
481#define XFS_SB_VERSION_SUBEXTFLGBIT(sbp) xfs_sb_version_subextflgbit(sbp)
482#else
483#define XFS_SB_VERSION_SUBEXTFLGBIT(sbp) \
484 ((sbp)->sb_versionnum = \
485 ((sbp)->sb_versionnum & ~XFS_SB_VERSION_EXTFLGBIT))
486#endif
487
488#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASSECTOR)
489int xfs_sb_version_hassector(xfs_sb_t *sbp);
490#define XFS_SB_VERSION_HASSECTOR(sbp) xfs_sb_version_hassector(sbp)
491#else
492#define XFS_SB_VERSION_HASSECTOR(sbp) \
493 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
494 ((sbp)->sb_versionnum & XFS_SB_VERSION_SECTORBIT))
495#endif
496
497#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASMOREBITSBIT)
498int xfs_sb_version_hasmorebits(xfs_sb_t *sbp);
499#define XFS_SB_VERSION_HASMOREBITS(sbp) xfs_sb_version_hasmorebits(sbp)
500#else
501#define XFS_SB_VERSION_HASMOREBITS(sbp) \
502 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
503 ((sbp)->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT))
504#endif
505
506/*
507 * sb_features2 bit version macros.
508 *
Nathan Scottd8cc8902005-11-02 10:34:53 +1100[diff] [blame^]509 * For example, for a bit defined as XFS_SB_VERSION2_FUNBIT, has a macro:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]510 *
Nathan Scottd8cc8902005-11-02 10:34:53 +1100[diff] [blame^]511 * SB_VERSION_HASFUNBIT(xfs_sb_t *sbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]512 * ((XFS_SB_VERSION_HASMOREBITS(sbp) &&
Nathan Scottd8cc8902005-11-02 10:34:53 +1100[diff] [blame^]513 * ((sbp)->sb_features2 & XFS_SB_VERSION2_FUNBIT)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]514 */
Nathan Scottd8cc8902005-11-02 10:34:53 +1100[diff] [blame^]515#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASATTR2)
516int xfs_sb_version_hasattr2(xfs_sb_t *sbp);
517#define XFS_SB_VERSION_HASATTR2(sbp) xfs_sb_version_hasattr2(sbp)
518#else
519#define XFS_SB_VERSION_HASATTR2(sbp) \
520 ((XFS_SB_VERSION_HASMOREBITS(sbp)) && \
521 ((sbp)->sb_features2 & XFS_SB_VERSION2_ATTR2BIT))
522#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]523
Nathan Scottd8cc8902005-11-02 10:34:53 +1100[diff] [blame^]524#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDATTR2)
525void xfs_sb_version_addattr2(xfs_sb_t *sbp);
526#define XFS_SB_VERSION_ADDATTR2(sbp) xfs_sb_version_addattr2(sbp)
527#else
528#define XFS_SB_VERSION_ADDATTR2(sbp) \
529 ((sbp)->sb_versionnum = \
530 ((sbp)->sb_versionnum | XFS_SB_VERSION_MOREBITSBIT), \
531 ((sbp)->sb_features2 = \
532 ((sbp)->sb_features2 | XFS_SB_VERSION2_ATTR2BIT)))
533#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]534/*
535 * end of superblock version macros
536 */
537
538#define XFS_SB_DADDR ((xfs_daddr_t)0) /* daddr in filesystem/ag */
539#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_BLOCK)
540xfs_agblock_t xfs_sb_block(struct xfs_mount *mp);
541#define XFS_SB_BLOCK(mp) xfs_sb_block(mp)
542#else
543#define XFS_SB_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_SB_DADDR)
544#endif
545
546#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_HDR_BLOCK)
547xfs_agblock_t xfs_hdr_block(struct xfs_mount *mp, xfs_daddr_t d);
548#define XFS_HDR_BLOCK(mp,d) xfs_hdr_block(mp,d)
549#else
550#define XFS_HDR_BLOCK(mp,d) ((xfs_agblock_t)(XFS_BB_TO_FSBT(mp,d)))
551#endif
552#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DADDR_TO_FSB)
553xfs_fsblock_t xfs_daddr_to_fsb(struct xfs_mount *mp, xfs_daddr_t d);
554#define XFS_DADDR_TO_FSB(mp,d) xfs_daddr_to_fsb(mp,d)
555#else
556#define XFS_DADDR_TO_FSB(mp,d) \
557 XFS_AGB_TO_FSB(mp, XFS_DADDR_TO_AGNO(mp,d), XFS_DADDR_TO_AGBNO(mp,d))
558#endif
559#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_FSB_TO_DADDR)
560xfs_daddr_t xfs_fsb_to_daddr(struct xfs_mount *mp, xfs_fsblock_t fsbno);
561#define XFS_FSB_TO_DADDR(mp,fsbno) xfs_fsb_to_daddr(mp,fsbno)
562#else
563#define XFS_FSB_TO_DADDR(mp,fsbno) \
564 XFS_AGB_TO_DADDR(mp, XFS_FSB_TO_AGNO(mp,fsbno), \
565 XFS_FSB_TO_AGBNO(mp,fsbno))
566#endif
567
568#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BUF_TO_SBP)
569xfs_sb_t *xfs_buf_to_sbp(struct xfs_buf *bp);
570#define XFS_BUF_TO_SBP(bp) xfs_buf_to_sbp(bp)
571#else
572#define XFS_BUF_TO_SBP(bp) ((xfs_sb_t *)XFS_BUF_PTR(bp))
573#endif
574
575/*
576 * File system sector to basic block conversions.
577 */
578#define XFS_FSS_TO_BB(mp,sec) ((sec) << (mp)->m_sectbb_log)
579#define XFS_BB_TO_FSS(mp,bb) \
580 (((bb) + (XFS_FSS_TO_BB(mp,1) - 1)) >> (mp)->m_sectbb_log)
581#define XFS_BB_TO_FSST(mp,bb) ((bb) >> (mp)->m_sectbb_log)
582
583/*
584 * File system sector to byte conversions.
585 */
586#define XFS_FSS_TO_B(mp,sectno) ((xfs_fsize_t)(sectno) << (mp)->m_sb.sb_sectlog)
587#define XFS_B_TO_FSST(mp,b) (((__uint64_t)(b)) >> (mp)->m_sb.sb_sectlog)
588
589/*
590 * File system block to basic block conversions.
591 */
592#define XFS_FSB_TO_BB(mp,fsbno) ((fsbno) << (mp)->m_blkbb_log)
593#define XFS_BB_TO_FSB(mp,bb) \
594 (((bb) + (XFS_FSB_TO_BB(mp,1) - 1)) >> (mp)->m_blkbb_log)
595#define XFS_BB_TO_FSBT(mp,bb) ((bb) >> (mp)->m_blkbb_log)
596#define XFS_BB_FSB_OFFSET(mp,bb) ((bb) & ((mp)->m_bsize - 1))
597
598/*
599 * File system block to byte conversions.
600 */
601#define XFS_FSB_TO_B(mp,fsbno) ((xfs_fsize_t)(fsbno) << (mp)->m_sb.sb_blocklog)
602#define XFS_B_TO_FSB(mp,b) \
603 ((((__uint64_t)(b)) + (mp)->m_blockmask) >> (mp)->m_sb.sb_blocklog)
604#define XFS_B_TO_FSBT(mp,b) (((__uint64_t)(b)) >> (mp)->m_sb.sb_blocklog)
605#define XFS_B_FSB_OFFSET(mp,b) ((b) & (mp)->m_blockmask)
606
607#endif /* __XFS_SB_H__ */