source: bootcd/isolinux/syslinux-6.03/extlinux/xfs_sb.h

Last change on this file was e16e8f2, checked in by Edwin Eefting <edwin@datux.nl>, 3 years ago

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[e16e8f2]1/*
2 * Taken from Linux kernel tree (linux/fs/xfs)
3 *
4 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
5 * All Rights Reserved.
6 *
7 * Copyright (c) 2012 Paulo Alcantara <pcacjr@zytor.com>
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it would be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write the Free Software Foundation,
20 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
21 */
22#ifndef XFS_SB_H_
23#define XFS_SB_H__
24
25#include <stddef.h>
26
27#include <sys/types.h>
28#include <uuid/uuid.h>
29
30/*
31 * Super block
32 * Fits into a sector-sized buffer at address 0 of each allocation group.
33 * Only the first of these is ever updated except during growfs.
34 */
35
36struct xfs_buf;
37struct xfs_mount;
38
39#define XFS_SB_MAGIC            "XFSB"          /* 'XFSB' */
40#define XFS_SB_VERSION_1        1               /* 5.3, 6.0.1, 6.1 */
41#define XFS_SB_VERSION_2        2               /* 6.2 - attributes */
42#define XFS_SB_VERSION_3        3               /* 6.2 - new inode version */
43#define XFS_SB_VERSION_4        4               /* 6.2+ - bitmask version */
44#define XFS_SB_VERSION_NUMBITS          0x000f
45#define XFS_SB_VERSION_ALLFBITS         0xfff0
46#define XFS_SB_VERSION_SASHFBITS        0xf000
47#define XFS_SB_VERSION_REALFBITS        0x0ff0
48#define XFS_SB_VERSION_ATTRBIT          0x0010
49#define XFS_SB_VERSION_NLINKBIT         0x0020
50#define XFS_SB_VERSION_QUOTABIT         0x0040
51#define XFS_SB_VERSION_ALIGNBIT         0x0080
52#define XFS_SB_VERSION_DALIGNBIT        0x0100
53#define XFS_SB_VERSION_SHAREDBIT        0x0200
54#define XFS_SB_VERSION_LOGV2BIT         0x0400
55#define XFS_SB_VERSION_SECTORBIT        0x0800
56#define XFS_SB_VERSION_EXTFLGBIT        0x1000
57#define XFS_SB_VERSION_DIRV2BIT         0x2000
58#define XFS_SB_VERSION_BORGBIT          0x4000  /* ASCII only case-insens. */
59#define XFS_SB_VERSION_MOREBITSBIT      0x8000
60#define XFS_SB_VERSION_OKSASHFBITS      \
61        (XFS_SB_VERSION_EXTFLGBIT | \
62         XFS_SB_VERSION_DIRV2BIT | \
63         XFS_SB_VERSION_BORGBIT)
64#define XFS_SB_VERSION_OKREALFBITS      \
65        (XFS_SB_VERSION_ATTRBIT | \
66         XFS_SB_VERSION_NLINKBIT | \
67         XFS_SB_VERSION_QUOTABIT | \
68         XFS_SB_VERSION_ALIGNBIT | \
69         XFS_SB_VERSION_DALIGNBIT | \
70         XFS_SB_VERSION_SHAREDBIT | \
71         XFS_SB_VERSION_LOGV2BIT | \
72         XFS_SB_VERSION_SECTORBIT | \
73         XFS_SB_VERSION_MOREBITSBIT)
74#define XFS_SB_VERSION_OKREALBITS       \
75        (XFS_SB_VERSION_NUMBITS | \
76         XFS_SB_VERSION_OKREALFBITS | \
77         XFS_SB_VERSION_OKSASHFBITS)
78
79/*
80 * There are two words to hold XFS "feature" bits: the original
81 * word, sb_versionnum, and sb_features2.  Whenever a bit is set in
82 * sb_features2, the feature bit XFS_SB_VERSION_MOREBITSBIT must be set.
83 *
84 * These defines represent bits in sb_features2.
85 */
86#define XFS_SB_VERSION2_REALFBITS       0x00ffffff      /* Mask: features */
87#define XFS_SB_VERSION2_RESERVED1BIT    0x00000001
88#define XFS_SB_VERSION2_LAZYSBCOUNTBIT  0x00000002      /* Superblk counters */
89#define XFS_SB_VERSION2_RESERVED4BIT    0x00000004
90#define XFS_SB_VERSION2_ATTR2BIT        0x00000008      /* Inline attr rework */
91#define XFS_SB_VERSION2_PARENTBIT       0x00000010      /* parent pointers */
92#define XFS_SB_VERSION2_PROJID32BIT     0x00000080      /* 32 bit project id */
93
94#define XFS_SB_VERSION2_OKREALFBITS     \
95        (XFS_SB_VERSION2_LAZYSBCOUNTBIT | \
96         XFS_SB_VERSION2_ATTR2BIT       | \
97         XFS_SB_VERSION2_PROJID32BIT)
98#define XFS_SB_VERSION2_OKSASHFBITS     \
99        (0)
100#define XFS_SB_VERSION2_OKREALBITS      \
101        (XFS_SB_VERSION2_OKREALFBITS |  \
102         XFS_SB_VERSION2_OKSASHFBITS )
103
104/*
105 * Superblock - in core version.  Must match the ondisk version below.
106 * Must be padded to 64 bit alignment.
107 */
108typedef struct xfs_sb {
109        uint32_t        sb_magicnum;    /* magic number == XFS_SB_MAGIC */
110        uint32_t        sb_blocksize;   /* logical block size, bytes */
111        xfs_drfsbno_t   sb_dblocks;     /* number of data blocks */
112        xfs_drfsbno_t   sb_rblocks;     /* number of realtime blocks */
113        xfs_drtbno_t    sb_rextents;    /* number of realtime extents */
114        uuid_t          sb_uuid;        /* file system unique id */
115        xfs_dfsbno_t    sb_logstart;    /* starting block of log if internal */
116        xfs_ino_t       sb_rootino;     /* root inode number */
117        xfs_ino_t       sb_rbmino;      /* bitmap inode for realtime extents */
118        xfs_ino_t       sb_rsumino;     /* summary inode for rt bitmap */
119        xfs_agblock_t   sb_rextsize;    /* realtime extent size, blocks */
120        xfs_agblock_t   sb_agblocks;    /* size of an allocation group */
121        xfs_agnumber_t  sb_agcount;     /* number of allocation groups */
122        xfs_extlen_t    sb_rbmblocks;   /* number of rt bitmap blocks */
123        xfs_extlen_t    sb_logblocks;   /* number of log blocks */
124        uint16_t        sb_versionnum;  /* header version == XFS_SB_VERSION */
125        uint16_t        sb_sectsize;    /* volume sector size, bytes */
126        uint16_t        sb_inodesize;   /* inode size, bytes */
127        uint16_t        sb_inopblock;   /* inodes per block */
128        char            sb_fname[12];   /* file system name */
129        uint8_t sb_blocklog;    /* log2 of sb_blocksize */
130        uint8_t sb_sectlog;     /* log2 of sb_sectsize */
131        uint8_t sb_inodelog;    /* log2 of sb_inodesize */
132        uint8_t sb_inopblog;    /* log2 of sb_inopblock */
133        uint8_t sb_agblklog;    /* log2 of sb_agblocks (rounded up) */
134        uint8_t sb_rextslog;    /* log2 of sb_rextents */
135        uint8_t sb_inprogress;  /* mkfs is in progress, don't mount */
136        uint8_t sb_imax_pct;    /* max % of fs for inode space */
137                                        /* statistics */
138        /*
139         * These fields must remain contiguous.  If you really
140         * want to change their layout, make sure you fix the
141         * code in xfs_trans_apply_sb_deltas().
142         */
143        uint64_t        sb_icount;      /* allocated inodes */
144        uint64_t        sb_ifree;       /* free inodes */
145        uint64_t        sb_fdblocks;    /* free data blocks */
146        uint64_t        sb_frextents;   /* free realtime extents */
147        /*
148         * End contiguous fields.
149         */
150        xfs_ino_t       sb_uquotino;    /* user quota inode */
151        xfs_ino_t       sb_gquotino;    /* group quota inode */
152        uint16_t        sb_qflags;      /* quota flags */
153        uint8_t sb_flags;       /* misc. flags */
154        uint8_t sb_shared_vn;   /* shared version number */
155        xfs_extlen_t    sb_inoalignmt;  /* inode chunk alignment, fsblocks */
156        uint32_t        sb_unit;        /* stripe or raid unit */
157        uint32_t        sb_width;       /* stripe or raid width */
158        uint8_t sb_dirblklog;   /* log2 of dir block size (fsbs) */
159        uint8_t sb_logsectlog;  /* log2 of the log sector size */
160        uint16_t        sb_logsectsize; /* sector size for the log, bytes */
161        uint32_t        sb_logsunit;    /* stripe unit size for the log */
162        uint32_t        sb_features2;   /* additional feature bits */
163
164        /*
165         * bad features2 field as a result of failing to pad the sb
166         * structure to 64 bits. Some machines will be using this field
167         * for features2 bits. Easiest just to mark it bad and not use
168         * it for anything else.
169         */
170        uint32_t        sb_bad_features2;
171
172        /* must be padded to 64 bit alignment */
173} xfs_sb_t;
174
175/*
176 * Sequence number values for the fields.
177 */
178typedef enum {
179        XFS_SBS_MAGICNUM, XFS_SBS_BLOCKSIZE, XFS_SBS_DBLOCKS, XFS_SBS_RBLOCKS,
180        XFS_SBS_REXTENTS, XFS_SBS_UUID, XFS_SBS_LOGSTART, XFS_SBS_ROOTINO,
181        XFS_SBS_RBMINO, XFS_SBS_RSUMINO, XFS_SBS_REXTSIZE, XFS_SBS_AGBLOCKS,
182        XFS_SBS_AGCOUNT, XFS_SBS_RBMBLOCKS, XFS_SBS_LOGBLOCKS,
183        XFS_SBS_VERSIONNUM, XFS_SBS_SECTSIZE, XFS_SBS_INODESIZE,
184        XFS_SBS_INOPBLOCK, XFS_SBS_FNAME, XFS_SBS_BLOCKLOG,
185        XFS_SBS_SECTLOG, XFS_SBS_INODELOG, XFS_SBS_INOPBLOG, XFS_SBS_AGBLKLOG,
186        XFS_SBS_REXTSLOG, XFS_SBS_INPROGRESS, XFS_SBS_IMAX_PCT, XFS_SBS_ICOUNT,
187        XFS_SBS_IFREE, XFS_SBS_FDBLOCKS, XFS_SBS_FREXTENTS, XFS_SBS_UQUOTINO,
188        XFS_SBS_GQUOTINO, XFS_SBS_QFLAGS, XFS_SBS_FLAGS, XFS_SBS_SHARED_VN,
189        XFS_SBS_INOALIGNMT, XFS_SBS_UNIT, XFS_SBS_WIDTH, XFS_SBS_DIRBLKLOG,
190        XFS_SBS_LOGSECTLOG, XFS_SBS_LOGSECTSIZE, XFS_SBS_LOGSUNIT,
191        XFS_SBS_FEATURES2, XFS_SBS_BAD_FEATURES2,
192        XFS_SBS_FIELDCOUNT
193} xfs_sb_field_t;
194
195/*
196 * Mask values, defined based on the xfs_sb_field_t values.
197 * Only define the ones we're using.
198 */
199#define XFS_SB_MVAL(x)          (1LL << XFS_SBS_ ## x)
200#define XFS_SB_UUID             XFS_SB_MVAL(UUID)
201#define XFS_SB_FNAME            XFS_SB_MVAL(FNAME)
202#define XFS_SB_ROOTINO          XFS_SB_MVAL(ROOTINO)
203#define XFS_SB_RBMINO           XFS_SB_MVAL(RBMINO)
204#define XFS_SB_RSUMINO          XFS_SB_MVAL(RSUMINO)
205#define XFS_SB_VERSIONNUM       XFS_SB_MVAL(VERSIONNUM)
206#define XFS_SB_UQUOTINO         XFS_SB_MVAL(UQUOTINO)
207#define XFS_SB_GQUOTINO         XFS_SB_MVAL(GQUOTINO)
208#define XFS_SB_QFLAGS           XFS_SB_MVAL(QFLAGS)
209#define XFS_SB_SHARED_VN        XFS_SB_MVAL(SHARED_VN)
210#define XFS_SB_UNIT             XFS_SB_MVAL(UNIT)
211#define XFS_SB_WIDTH            XFS_SB_MVAL(WIDTH)
212#define XFS_SB_ICOUNT           XFS_SB_MVAL(ICOUNT)
213#define XFS_SB_IFREE            XFS_SB_MVAL(IFREE)
214#define XFS_SB_FDBLOCKS         XFS_SB_MVAL(FDBLOCKS)
215#define XFS_SB_FEATURES2        XFS_SB_MVAL(FEATURES2)
216#define XFS_SB_BAD_FEATURES2    XFS_SB_MVAL(BAD_FEATURES2)
217#define XFS_SB_NUM_BITS         ((int)XFS_SBS_FIELDCOUNT)
218#define XFS_SB_ALL_BITS         ((1LL << XFS_SB_NUM_BITS) - 1)
219#define XFS_SB_MOD_BITS         \
220        (XFS_SB_UUID | XFS_SB_ROOTINO | XFS_SB_RBMINO | XFS_SB_RSUMINO | \
221         XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | XFS_SB_GQUOTINO | \
222         XFS_SB_QFLAGS | XFS_SB_SHARED_VN | XFS_SB_UNIT | XFS_SB_WIDTH | \
223         XFS_SB_ICOUNT | XFS_SB_IFREE | XFS_SB_FDBLOCKS | XFS_SB_FEATURES2 | \
224         XFS_SB_BAD_FEATURES2)
225
226
227/*
228 * Misc. Flags - warning - these will be cleared by xfs_repair unless
229 * a feature bit is set when the flag is used.
230 */
231#define XFS_SBF_NOFLAGS         0x00    /* no flags set */
232#define XFS_SBF_READONLY        0x01    /* only read-only mounts allowed */
233
234/*
235 * define max. shared version we can interoperate with
236 */
237#define XFS_SB_MAX_SHARED_VN    0
238
239#define XFS_SB_VERSION_NUM(sbp) ((sbp)->sb_versionnum & XFS_SB_VERSION_NUMBITS)
240
241static inline int xfs_sb_good_version(xfs_sb_t *sbp)
242{
243        /* We always support version 1-3 */
244        if (sbp->sb_versionnum >= XFS_SB_VERSION_1 &&
245            sbp->sb_versionnum <= XFS_SB_VERSION_3)
246                return 1;
247
248        /* We support version 4 if all feature bits are supported */
249        if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) {
250                if ((sbp->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS) ||
251                    ((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) &&
252                     (sbp->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS)))
253                        return 0;
254
255                if ((sbp->sb_versionnum & XFS_SB_VERSION_SHAREDBIT) &&
256                    sbp->sb_shared_vn > XFS_SB_MAX_SHARED_VN)
257                        return 0;
258
259                return 1;
260        }
261
262        return 0;
263}
264
265/*
266 * Detect a mismatched features2 field.  Older kernels read/wrote
267 * this into the wrong slot, so to be safe we keep them in sync.
268 */
269static inline int xfs_sb_has_mismatched_features2(xfs_sb_t *sbp)
270{
271        return (sbp->sb_bad_features2 != sbp->sb_features2);
272}
273
274static inline unsigned xfs_sb_version_tonew(unsigned v)
275{
276        if (v == XFS_SB_VERSION_1)
277                return XFS_SB_VERSION_4;
278
279        if (v == XFS_SB_VERSION_2)
280                return XFS_SB_VERSION_4 | XFS_SB_VERSION_ATTRBIT;
281
282        return XFS_SB_VERSION_4 | XFS_SB_VERSION_ATTRBIT |
283                XFS_SB_VERSION_NLINKBIT;
284}
285
286static inline unsigned xfs_sb_version_toold(unsigned v)
287{
288        if (v & (XFS_SB_VERSION_QUOTABIT | XFS_SB_VERSION_ALIGNBIT))
289                return 0;
290        if (v & XFS_SB_VERSION_NLINKBIT)
291                return XFS_SB_VERSION_3;
292        if (v & XFS_SB_VERSION_ATTRBIT)
293                return XFS_SB_VERSION_2;
294        return XFS_SB_VERSION_1;
295}
296
297static inline int xfs_sb_version_hasattr(xfs_sb_t *sbp)
298{
299        return sbp->sb_versionnum == XFS_SB_VERSION_2 ||
300                sbp->sb_versionnum == XFS_SB_VERSION_3 ||
301                (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
302                 (sbp->sb_versionnum & XFS_SB_VERSION_ATTRBIT));
303}
304
305static inline void xfs_sb_version_addattr(xfs_sb_t *sbp)
306{
307        if (sbp->sb_versionnum == XFS_SB_VERSION_1)
308                sbp->sb_versionnum = XFS_SB_VERSION_2;
309        else if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4)
310                sbp->sb_versionnum |= XFS_SB_VERSION_ATTRBIT;
311        else
312                sbp->sb_versionnum = XFS_SB_VERSION_4 | XFS_SB_VERSION_ATTRBIT;
313}
314
315static inline int xfs_sb_version_hasnlink(xfs_sb_t *sbp)
316{
317        return sbp->sb_versionnum == XFS_SB_VERSION_3 ||
318                 (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
319                  (sbp->sb_versionnum & XFS_SB_VERSION_NLINKBIT));
320}
321
322static inline void xfs_sb_version_addnlink(xfs_sb_t *sbp)
323{
324        if (sbp->sb_versionnum <= XFS_SB_VERSION_2)
325                sbp->sb_versionnum = XFS_SB_VERSION_3;
326        else
327                sbp->sb_versionnum |= XFS_SB_VERSION_NLINKBIT;
328}
329
330static inline int xfs_sb_version_hasquota(xfs_sb_t *sbp)
331{
332        return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
333                (sbp->sb_versionnum & XFS_SB_VERSION_QUOTABIT);
334}
335
336static inline void xfs_sb_version_addquota(xfs_sb_t *sbp)
337{
338        if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4)
339                sbp->sb_versionnum |= XFS_SB_VERSION_QUOTABIT;
340        else
341                sbp->sb_versionnum = xfs_sb_version_tonew(sbp->sb_versionnum) |
342                                        XFS_SB_VERSION_QUOTABIT;
343}
344
345static inline int xfs_sb_version_hasalign(xfs_sb_t *sbp)
346{
347        return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
348                (sbp->sb_versionnum & XFS_SB_VERSION_ALIGNBIT);
349}
350
351static inline int xfs_sb_version_hasdalign(xfs_sb_t *sbp)
352{
353        return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
354                (sbp->sb_versionnum & XFS_SB_VERSION_DALIGNBIT);
355}
356
357static inline int xfs_sb_version_hasshared(xfs_sb_t *sbp)
358{
359        return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
360                (sbp->sb_versionnum & XFS_SB_VERSION_SHAREDBIT);
361}
362
363static inline int xfs_sb_version_hasdirv2(xfs_sb_t *sbp)
364{
365        return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
366                (sbp->sb_versionnum & XFS_SB_VERSION_DIRV2BIT);
367}
368
369static inline int xfs_sb_version_haslogv2(xfs_sb_t *sbp)
370{
371        return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
372                (sbp->sb_versionnum & XFS_SB_VERSION_LOGV2BIT);
373}
374
375static inline int xfs_sb_version_hasextflgbit(xfs_sb_t *sbp)
376{
377        return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
378                (sbp->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT);
379}
380
381static inline int xfs_sb_version_hassector(xfs_sb_t *sbp)
382{
383        return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
384                (sbp->sb_versionnum & XFS_SB_VERSION_SECTORBIT);
385}
386
387static inline int xfs_sb_version_hasasciici(xfs_sb_t *sbp)
388{
389        return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
390                (sbp->sb_versionnum & XFS_SB_VERSION_BORGBIT);
391}
392
393static inline int xfs_sb_version_hasmorebits(xfs_sb_t *sbp)
394{
395        return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
396                (sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT);
397}
398
399/*
400 * sb_features2 bit version macros.
401 *
402 * For example, for a bit defined as XFS_SB_VERSION2_FUNBIT, has a macro:
403 *
404 * SB_VERSION_HASFUNBIT(xfs_sb_t *sbp)
405 *      ((xfs_sb_version_hasmorebits(sbp) &&
406 *       ((sbp)->sb_features2 & XFS_SB_VERSION2_FUNBIT)
407 */
408
409static inline int xfs_sb_version_haslazysbcount(xfs_sb_t *sbp)
410{
411        return xfs_sb_version_hasmorebits(sbp) &&
412                (sbp->sb_features2 & XFS_SB_VERSION2_LAZYSBCOUNTBIT);
413}
414
415static inline int xfs_sb_version_hasattr2(xfs_sb_t *sbp)
416{
417        return xfs_sb_version_hasmorebits(sbp) &&
418                (sbp->sb_features2 & XFS_SB_VERSION2_ATTR2BIT);
419}
420
421static inline void xfs_sb_version_addattr2(xfs_sb_t *sbp)
422{
423        sbp->sb_versionnum |= XFS_SB_VERSION_MOREBITSBIT;
424        sbp->sb_features2 |= XFS_SB_VERSION2_ATTR2BIT;
425}
426
427static inline void xfs_sb_version_removeattr2(xfs_sb_t *sbp)
428{
429        sbp->sb_features2 &= ~XFS_SB_VERSION2_ATTR2BIT;
430        if (!sbp->sb_features2)
431                sbp->sb_versionnum &= ~XFS_SB_VERSION_MOREBITSBIT;
432}
433
434static inline int xfs_sb_version_hasprojid32bit(xfs_sb_t *sbp)
435{
436        return xfs_sb_version_hasmorebits(sbp) &&
437                (sbp->sb_features2 & XFS_SB_VERSION2_PROJID32BIT);
438}
439
440/*
441 * end of superblock version macros
442 */
443
444#define XFS_SB_DADDR            ((xfs_daddr_t)0) /* daddr in filesystem/ag */
445#define XFS_SB_BLOCK(mp)        XFS_HDR_BLOCK(mp, XFS_SB_DADDR)
446#define XFS_BUF_TO_SBP(bp)      ((xfs_dsb_t *)((bp)->b_addr))
447
448#define XFS_HDR_BLOCK(mp,d)     ((xfs_agblock_t)XFS_BB_TO_FSBT(mp,d))
449#define XFS_DADDR_TO_FSB(mp,d)  XFS_AGB_TO_FSB(mp, \
450                        xfs_daddr_to_agno(mp,d), xfs_daddr_to_agbno(mp,d))
451#define XFS_FSB_TO_DADDR(mp,fsbno)      XFS_AGB_TO_DADDR(mp, \
452                        XFS_FSB_TO_AGNO(mp,fsbno), XFS_FSB_TO_AGBNO(mp,fsbno))
453
454/*
455 * File system sector to basic block conversions.
456 */
457#define XFS_FSS_TO_BB(mp,sec)   ((sec) << (mp)->m_sectbb_log)
458
459/*
460 * File system block to basic block conversions.
461 */
462#define XFS_FSB_TO_BB(mp,fsbno) ((fsbno) << (mp)->m_blkbb_log)
463#define XFS_BB_TO_FSB(mp,bb)    \
464        (((bb) + (XFS_FSB_TO_BB(mp,1) - 1)) >> (mp)->m_blkbb_log)
465#define XFS_BB_TO_FSBT(mp,bb)   ((bb) >> (mp)->m_blkbb_log)
466
467/*
468 * File system block to byte conversions.
469 */
470#define XFS_FSB_TO_B(mp,fsbno)  ((xfs_fsize_t)(fsbno) << (mp)->m_sb.sb_blocklog)
471#define XFS_B_TO_FSB(mp,b)      \
472        ((((uint64_t)(b)) + (mp)->m_blockmask) >> (mp)->m_sb.sb_blocklog)
473#define XFS_B_TO_FSBT(mp,b)     (((uint64_t)(b)) >> (mp)->m_sb.sb_blocklog)
474#define XFS_B_FSB_OFFSET(mp,b)  ((b) & (mp)->m_blockmask)
475
476#endif  /* XFS_SB_H_ */
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