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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott7b718762005-11-02 14:58:39 +11002 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * 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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
18#ifndef __XFS_SB_H__
19#define __XFS_SB_H__
20
21/*
22 * Super block
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.
25 */
26
27struct xfs_buf;
28struct xfs_mount;
29
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 | \
Nathan Scottd8cc8902005-11-02 10:34:53 +110061 XFS_SB_VERSION_SECTORBIT | \
62 XFS_SB_VERSION_MOREBITSBIT)
Linus Torvalds1da177e2005-04-16 15:20:36 -070063#define XFS_SB_VERSION_OKREALBITS \
64 (XFS_SB_VERSION_NUMBITS | \
65 XFS_SB_VERSION_OKREALFBITS | \
66 XFS_SB_VERSION_OKSASHFBITS)
Linus Torvalds1da177e2005-04-16 15:20:36 -070067
68/*
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.
72 *
73 * These defines represent bits in sb_features2.
74 */
75#define XFS_SB_VERSION2_REALFBITS 0x00ffffff /* Mask: features */
76#define XFS_SB_VERSION2_RESERVED1BIT 0x00000001
Nathan Scottd8cc8902005-11-02 10:34:53 +110077#define XFS_SB_VERSION2_RESERVED2BIT 0x00000002
78#define XFS_SB_VERSION2_RESERVED4BIT 0x00000004
79#define XFS_SB_VERSION2_ATTR2BIT 0x00000008 /* Inline attr rework */
Linus Torvalds1da177e2005-04-16 15:20:36 -070080
81#define XFS_SB_VERSION2_OKREALFBITS \
Nathan Scottd8cc8902005-11-02 10:34:53 +110082 (XFS_SB_VERSION2_ATTR2BIT)
Linus Torvalds1da177e2005-04-16 15:20:36 -070083#define XFS_SB_VERSION2_OKSASHFBITS \
84 (0)
85#define XFS_SB_VERSION2_OKREALBITS \
86 (XFS_SB_VERSION2_OKREALFBITS | \
87 XFS_SB_VERSION2_OKSASHFBITS )
88
Linus Torvalds1da177e2005-04-16 15:20:36 -070089typedef struct xfs_sb
90{
91 __uint32_t sb_magicnum; /* magic number == XFS_SB_MAGIC */
92 __uint32_t sb_blocksize; /* logical block size, bytes */
93 xfs_drfsbno_t sb_dblocks; /* number of data blocks */
94 xfs_drfsbno_t sb_rblocks; /* number of realtime blocks */
95 xfs_drtbno_t sb_rextents; /* number of realtime extents */
96 uuid_t sb_uuid; /* file system unique id */
97 xfs_dfsbno_t sb_logstart; /* starting block of log if internal */
98 xfs_ino_t sb_rootino; /* root inode number */
99 xfs_ino_t sb_rbmino; /* bitmap inode for realtime extents */
100 xfs_ino_t sb_rsumino; /* summary inode for rt bitmap */
101 xfs_agblock_t sb_rextsize; /* realtime extent size, blocks */
102 xfs_agblock_t sb_agblocks; /* size of an allocation group */
103 xfs_agnumber_t sb_agcount; /* number of allocation groups */
104 xfs_extlen_t sb_rbmblocks; /* number of rt bitmap blocks */
105 xfs_extlen_t sb_logblocks; /* number of log blocks */
106 __uint16_t sb_versionnum; /* header version == XFS_SB_VERSION */
107 __uint16_t sb_sectsize; /* volume sector size, bytes */
108 __uint16_t sb_inodesize; /* inode size, bytes */
109 __uint16_t sb_inopblock; /* inodes per block */
110 char sb_fname[12]; /* file system name */
111 __uint8_t sb_blocklog; /* log2 of sb_blocksize */
112 __uint8_t sb_sectlog; /* log2 of sb_sectsize */
113 __uint8_t sb_inodelog; /* log2 of sb_inodesize */
114 __uint8_t sb_inopblog; /* log2 of sb_inopblock */
115 __uint8_t sb_agblklog; /* log2 of sb_agblocks (rounded up) */
116 __uint8_t sb_rextslog; /* log2 of sb_rextents */
117 __uint8_t sb_inprogress; /* mkfs is in progress, don't mount */
118 __uint8_t sb_imax_pct; /* max % of fs for inode space */
119 /* statistics */
120 /*
121 * These fields must remain contiguous. If you really
122 * want to change their layout, make sure you fix the
123 * code in xfs_trans_apply_sb_deltas().
124 */
125 __uint64_t sb_icount; /* allocated inodes */
126 __uint64_t sb_ifree; /* free inodes */
127 __uint64_t sb_fdblocks; /* free data blocks */
128 __uint64_t sb_frextents; /* free realtime extents */
129 /*
130 * End contiguous fields.
131 */
132 xfs_ino_t sb_uquotino; /* user quota inode */
133 xfs_ino_t sb_gquotino; /* group quota inode */
134 __uint16_t sb_qflags; /* quota flags */
135 __uint8_t sb_flags; /* misc. flags */
136 __uint8_t sb_shared_vn; /* shared version number */
137 xfs_extlen_t sb_inoalignmt; /* inode chunk alignment, fsblocks */
138 __uint32_t sb_unit; /* stripe or raid unit */
139 __uint32_t sb_width; /* stripe or raid width */
140 __uint8_t sb_dirblklog; /* log2 of dir block size (fsbs) */
141 __uint8_t sb_logsectlog; /* log2 of the log sector size */
142 __uint16_t sb_logsectsize; /* sector size for the log, bytes */
143 __uint32_t sb_logsunit; /* stripe unit size for the log */
Nathan Scottd8cc8902005-11-02 10:34:53 +1100144 __uint32_t sb_features2; /* additional feature bits */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145} xfs_sb_t;
146
147/*
148 * Sequence number values for the fields.
149 */
150typedef enum {
151 XFS_SBS_MAGICNUM, XFS_SBS_BLOCKSIZE, XFS_SBS_DBLOCKS, XFS_SBS_RBLOCKS,
152 XFS_SBS_REXTENTS, XFS_SBS_UUID, XFS_SBS_LOGSTART, XFS_SBS_ROOTINO,
153 XFS_SBS_RBMINO, XFS_SBS_RSUMINO, XFS_SBS_REXTSIZE, XFS_SBS_AGBLOCKS,
154 XFS_SBS_AGCOUNT, XFS_SBS_RBMBLOCKS, XFS_SBS_LOGBLOCKS,
155 XFS_SBS_VERSIONNUM, XFS_SBS_SECTSIZE, XFS_SBS_INODESIZE,
156 XFS_SBS_INOPBLOCK, XFS_SBS_FNAME, XFS_SBS_BLOCKLOG,
157 XFS_SBS_SECTLOG, XFS_SBS_INODELOG, XFS_SBS_INOPBLOG, XFS_SBS_AGBLKLOG,
158 XFS_SBS_REXTSLOG, XFS_SBS_INPROGRESS, XFS_SBS_IMAX_PCT, XFS_SBS_ICOUNT,
159 XFS_SBS_IFREE, XFS_SBS_FDBLOCKS, XFS_SBS_FREXTENTS, XFS_SBS_UQUOTINO,
160 XFS_SBS_GQUOTINO, XFS_SBS_QFLAGS, XFS_SBS_FLAGS, XFS_SBS_SHARED_VN,
161 XFS_SBS_INOALIGNMT, XFS_SBS_UNIT, XFS_SBS_WIDTH, XFS_SBS_DIRBLKLOG,
162 XFS_SBS_LOGSECTLOG, XFS_SBS_LOGSECTSIZE, XFS_SBS_LOGSUNIT,
163 XFS_SBS_FEATURES2,
164 XFS_SBS_FIELDCOUNT
165} xfs_sb_field_t;
166
167/*
168 * Mask values, defined based on the xfs_sb_field_t values.
169 * Only define the ones we're using.
170 */
171#define XFS_SB_MVAL(x) (1LL << XFS_SBS_ ## x)
172#define XFS_SB_UUID XFS_SB_MVAL(UUID)
173#define XFS_SB_FNAME XFS_SB_MVAL(FNAME)
174#define XFS_SB_ROOTINO XFS_SB_MVAL(ROOTINO)
175#define XFS_SB_RBMINO XFS_SB_MVAL(RBMINO)
176#define XFS_SB_RSUMINO XFS_SB_MVAL(RSUMINO)
177#define XFS_SB_VERSIONNUM XFS_SB_MVAL(VERSIONNUM)
178#define XFS_SB_UQUOTINO XFS_SB_MVAL(UQUOTINO)
179#define XFS_SB_GQUOTINO XFS_SB_MVAL(GQUOTINO)
180#define XFS_SB_QFLAGS XFS_SB_MVAL(QFLAGS)
181#define XFS_SB_SHARED_VN XFS_SB_MVAL(SHARED_VN)
182#define XFS_SB_UNIT XFS_SB_MVAL(UNIT)
183#define XFS_SB_WIDTH XFS_SB_MVAL(WIDTH)
Nathan Scottd8cc8902005-11-02 10:34:53 +1100184#define XFS_SB_FEATURES2 XFS_SB_MVAL(FEATURES2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185#define XFS_SB_NUM_BITS ((int)XFS_SBS_FIELDCOUNT)
186#define XFS_SB_ALL_BITS ((1LL << XFS_SB_NUM_BITS) - 1)
187#define XFS_SB_MOD_BITS \
188 (XFS_SB_UUID | XFS_SB_ROOTINO | XFS_SB_RBMINO | XFS_SB_RSUMINO | \
189 XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | XFS_SB_GQUOTINO | \
Nathan Scottd8cc8902005-11-02 10:34:53 +1100190 XFS_SB_QFLAGS | XFS_SB_SHARED_VN | XFS_SB_UNIT | XFS_SB_WIDTH | \
191 XFS_SB_FEATURES2)
192
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193
194/*
195 * Misc. Flags - warning - these will be cleared by xfs_repair unless
196 * a feature bit is set when the flag is used.
197 */
198#define XFS_SBF_NOFLAGS 0x00 /* no flags set */
199#define XFS_SBF_READONLY 0x01 /* only read-only mounts allowed */
200
201/*
202 * define max. shared version we can interoperate with
203 */
204#define XFS_SB_MAX_SHARED_VN 0
205
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206#define XFS_SB_VERSION_NUM(sbp) ((sbp)->sb_versionnum & XFS_SB_VERSION_NUMBITS)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208#define XFS_SB_GOOD_VERSION(sbp) xfs_sb_good_version(sbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209#ifdef __KERNEL__
Nathan Scotta844f452005-11-02 14:38:42 +1100210static inline int xfs_sb_good_version(xfs_sb_t *sbp)
211{
212 return (((sbp->sb_versionnum >= XFS_SB_VERSION_1) && \
213 (sbp->sb_versionnum <= XFS_SB_VERSION_3)) || \
214 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
215 !((sbp->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS) || \
216 ((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) && \
217 (sbp->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS))) && \
218 (sbp->sb_shared_vn <= XFS_SB_MAX_SHARED_VN)));
219}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220#else
Nathan Scotta844f452005-11-02 14:38:42 +1100221static inline int xfs_sb_good_version(xfs_sb_t *sbp)
222{
223 return (((sbp->sb_versionnum >= XFS_SB_VERSION_1) && \
224 (sbp->sb_versionnum <= XFS_SB_VERSION_3)) || \
225 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
226 !((sbp->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS) || \
227 ((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) && \
228 (sbp->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS))) && \
229 (!(sbp->sb_versionnum & XFS_SB_VERSION_SHAREDBIT) || \
230 (sbp->sb_shared_vn <= XFS_SB_MAX_SHARED_VN))));
231}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232#endif /* __KERNEL__ */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234#define XFS_SB_VERSION_TONEW(v) xfs_sb_version_tonew(v)
Nathan Scotta844f452005-11-02 14:38:42 +1100235static inline unsigned xfs_sb_version_tonew(unsigned v)
236{
237 return ((((v) == XFS_SB_VERSION_1) ? \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 0 : \
239 (((v) == XFS_SB_VERSION_2) ? \
240 XFS_SB_VERSION_ATTRBIT : \
241 (XFS_SB_VERSION_ATTRBIT | XFS_SB_VERSION_NLINKBIT))) | \
Nathan Scotta844f452005-11-02 14:38:42 +1100242 XFS_SB_VERSION_4);
243}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245#define XFS_SB_VERSION_TOOLD(v) xfs_sb_version_toold(v)
Nathan Scotta844f452005-11-02 14:38:42 +1100246static inline unsigned xfs_sb_version_toold(unsigned v)
247{
248 return (((v) & (XFS_SB_VERSION_QUOTABIT | XFS_SB_VERSION_ALIGNBIT)) ? \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 0 : \
250 (((v) & XFS_SB_VERSION_NLINKBIT) ? \
251 XFS_SB_VERSION_3 : \
252 (((v) & XFS_SB_VERSION_ATTRBIT) ? \
253 XFS_SB_VERSION_2 : \
Nathan Scotta844f452005-11-02 14:38:42 +1100254 XFS_SB_VERSION_1)));
255}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257#define XFS_SB_VERSION_HASATTR(sbp) xfs_sb_version_hasattr(sbp)
Nathan Scotta844f452005-11-02 14:38:42 +1100258static inline int xfs_sb_version_hasattr(xfs_sb_t *sbp)
259{
260 return ((sbp)->sb_versionnum == XFS_SB_VERSION_2) || \
261 ((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \
262 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
263 ((sbp)->sb_versionnum & XFS_SB_VERSION_ATTRBIT));
264}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266#define XFS_SB_VERSION_ADDATTR(sbp) xfs_sb_version_addattr(sbp)
Nathan Scotta844f452005-11-02 14:38:42 +1100267static inline void xfs_sb_version_addattr(xfs_sb_t *sbp)
268{
269 (sbp)->sb_versionnum = (((sbp)->sb_versionnum == XFS_SB_VERSION_1) ? \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270 XFS_SB_VERSION_2 : \
271 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) ? \
272 ((sbp)->sb_versionnum | XFS_SB_VERSION_ATTRBIT) : \
Nathan Scotta844f452005-11-02 14:38:42 +1100273 (XFS_SB_VERSION_4 | XFS_SB_VERSION_ATTRBIT)));
274}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276#define XFS_SB_VERSION_HASNLINK(sbp) xfs_sb_version_hasnlink(sbp)
Nathan Scotta844f452005-11-02 14:38:42 +1100277static inline int xfs_sb_version_hasnlink(xfs_sb_t *sbp)
278{
279 return ((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \
280 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
281 ((sbp)->sb_versionnum & XFS_SB_VERSION_NLINKBIT));
282}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284#define XFS_SB_VERSION_ADDNLINK(sbp) xfs_sb_version_addnlink(sbp)
Nathan Scotta844f452005-11-02 14:38:42 +1100285static inline void xfs_sb_version_addnlink(xfs_sb_t *sbp)
286{
287 (sbp)->sb_versionnum = ((sbp)->sb_versionnum <= XFS_SB_VERSION_2 ? \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288 XFS_SB_VERSION_3 : \
Nathan Scotta844f452005-11-02 14:38:42 +1100289 ((sbp)->sb_versionnum | XFS_SB_VERSION_NLINKBIT));
290}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292#define XFS_SB_VERSION_HASQUOTA(sbp) xfs_sb_version_hasquota(sbp)
Nathan Scotta844f452005-11-02 14:38:42 +1100293static inline int xfs_sb_version_hasquota(xfs_sb_t *sbp)
294{
295 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
296 ((sbp)->sb_versionnum & XFS_SB_VERSION_QUOTABIT);
297}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299#define XFS_SB_VERSION_ADDQUOTA(sbp) xfs_sb_version_addquota(sbp)
Nathan Scotta844f452005-11-02 14:38:42 +1100300static inline void xfs_sb_version_addquota(xfs_sb_t *sbp)
301{
302 (sbp)->sb_versionnum = \
303 (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 ? \
304 ((sbp)->sb_versionnum | XFS_SB_VERSION_QUOTABIT) : \
305 (XFS_SB_VERSION_TONEW((sbp)->sb_versionnum) | \
306 XFS_SB_VERSION_QUOTABIT));
307}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309#define XFS_SB_VERSION_HASALIGN(sbp) xfs_sb_version_hasalign(sbp)
Nathan Scotta844f452005-11-02 14:38:42 +1100310static inline int xfs_sb_version_hasalign(xfs_sb_t *sbp)
311{
312 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
313 ((sbp)->sb_versionnum & XFS_SB_VERSION_ALIGNBIT);
314}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316#define XFS_SB_VERSION_SUBALIGN(sbp) xfs_sb_version_subalign(sbp)
Nathan Scotta844f452005-11-02 14:38:42 +1100317static inline void xfs_sb_version_subalign(xfs_sb_t *sbp)
318{
319 (sbp)->sb_versionnum = \
320 XFS_SB_VERSION_TOOLD((sbp)->sb_versionnum & ~XFS_SB_VERSION_ALIGNBIT);
321}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323#define XFS_SB_VERSION_HASDALIGN(sbp) xfs_sb_version_hasdalign(sbp)
Nathan Scotta844f452005-11-02 14:38:42 +1100324static inline int xfs_sb_version_hasdalign(xfs_sb_t *sbp)
325{
326 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
327 ((sbp)->sb_versionnum & XFS_SB_VERSION_DALIGNBIT);
328}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330#define XFS_SB_VERSION_ADDDALIGN(sbp) xfs_sb_version_adddalign(sbp)
Nathan Scotta844f452005-11-02 14:38:42 +1100331static inline int xfs_sb_version_adddalign(xfs_sb_t *sbp)
332{
333 return (sbp)->sb_versionnum = \
334 ((sbp)->sb_versionnum | XFS_SB_VERSION_DALIGNBIT);
335}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337#define XFS_SB_VERSION_HASSHARED(sbp) xfs_sb_version_hasshared(sbp)
Nathan Scotta844f452005-11-02 14:38:42 +1100338static inline int xfs_sb_version_hasshared(xfs_sb_t *sbp)
339{
340 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
341 ((sbp)->sb_versionnum & XFS_SB_VERSION_SHAREDBIT);
342}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344#define XFS_SB_VERSION_ADDSHARED(sbp) xfs_sb_version_addshared(sbp)
Nathan Scotta844f452005-11-02 14:38:42 +1100345static inline int xfs_sb_version_addshared(xfs_sb_t *sbp)
346{
347 return (sbp)->sb_versionnum = \
348 ((sbp)->sb_versionnum | XFS_SB_VERSION_SHAREDBIT);
349}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351#define XFS_SB_VERSION_SUBSHARED(sbp) xfs_sb_version_subshared(sbp)
Nathan Scotta844f452005-11-02 14:38:42 +1100352static inline int xfs_sb_version_subshared(xfs_sb_t *sbp)
353{
354 return (sbp)->sb_versionnum = \
355 ((sbp)->sb_versionnum & ~XFS_SB_VERSION_SHAREDBIT);
356}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358#define XFS_SB_VERSION_HASDIRV2(sbp) xfs_sb_version_hasdirv2(sbp)
Nathan Scotta844f452005-11-02 14:38:42 +1100359static inline int xfs_sb_version_hasdirv2(xfs_sb_t *sbp)
360{
361 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
362 ((sbp)->sb_versionnum & XFS_SB_VERSION_DIRV2BIT);
363}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365#define XFS_SB_VERSION_HASLOGV2(sbp) xfs_sb_version_haslogv2(sbp)
Nathan Scotta844f452005-11-02 14:38:42 +1100366static inline int xfs_sb_version_haslogv2(xfs_sb_t *sbp)
367{
368 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
369 ((sbp)->sb_versionnum & XFS_SB_VERSION_LOGV2BIT);
370}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372#define XFS_SB_VERSION_HASEXTFLGBIT(sbp) xfs_sb_version_hasextflgbit(sbp)
Nathan Scotta844f452005-11-02 14:38:42 +1100373static inline int xfs_sb_version_hasextflgbit(xfs_sb_t *sbp)
374{
375 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
376 ((sbp)->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT);
377}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379#define XFS_SB_VERSION_ADDEXTFLGBIT(sbp) xfs_sb_version_addextflgbit(sbp)
Nathan Scotta844f452005-11-02 14:38:42 +1100380static inline int xfs_sb_version_addextflgbit(xfs_sb_t *sbp)
381{
382 return (sbp)->sb_versionnum = \
383 ((sbp)->sb_versionnum | XFS_SB_VERSION_EXTFLGBIT);
384}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386#define XFS_SB_VERSION_SUBEXTFLGBIT(sbp) xfs_sb_version_subextflgbit(sbp)
Nathan Scotta844f452005-11-02 14:38:42 +1100387static inline int xfs_sb_version_subextflgbit(xfs_sb_t *sbp)
388{
389 return (sbp)->sb_versionnum = \
390 ((sbp)->sb_versionnum & ~XFS_SB_VERSION_EXTFLGBIT);
391}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393#define XFS_SB_VERSION_HASSECTOR(sbp) xfs_sb_version_hassector(sbp)
Nathan Scotta844f452005-11-02 14:38:42 +1100394static inline int xfs_sb_version_hassector(xfs_sb_t *sbp)
395{
396 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
397 ((sbp)->sb_versionnum & XFS_SB_VERSION_SECTORBIT);
398}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400#define XFS_SB_VERSION_HASMOREBITS(sbp) xfs_sb_version_hasmorebits(sbp)
Nathan Scotta844f452005-11-02 14:38:42 +1100401static inline int xfs_sb_version_hasmorebits(xfs_sb_t *sbp)
402{
403 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
404 ((sbp)->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT);
405}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406
407/*
408 * sb_features2 bit version macros.
409 *
Nathan Scottd8cc8902005-11-02 10:34:53 +1100410 * For example, for a bit defined as XFS_SB_VERSION2_FUNBIT, has a macro:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411 *
Nathan Scottd8cc8902005-11-02 10:34:53 +1100412 * SB_VERSION_HASFUNBIT(xfs_sb_t *sbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 * ((XFS_SB_VERSION_HASMOREBITS(sbp) &&
Nathan Scottd8cc8902005-11-02 10:34:53 +1100414 * ((sbp)->sb_features2 & XFS_SB_VERSION2_FUNBIT)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415 */
416
Nathan Scotta844f452005-11-02 14:38:42 +1100417#define XFS_SB_VERSION_HASATTR2(sbp) xfs_sb_version_hasattr2(sbp)
418static inline int xfs_sb_version_hasattr2(xfs_sb_t *sbp)
419{
420 return (XFS_SB_VERSION_HASMOREBITS(sbp)) && \
421 ((sbp)->sb_features2 & XFS_SB_VERSION2_ATTR2BIT);
422}
423
Nathan Scottd8cc8902005-11-02 10:34:53 +1100424#define XFS_SB_VERSION_ADDATTR2(sbp) xfs_sb_version_addattr2(sbp)
Nathan Scotta844f452005-11-02 14:38:42 +1100425static inline void xfs_sb_version_addattr2(xfs_sb_t *sbp)
426{
Nathan Scottd8cc8902005-11-02 10:34:53 +1100427 ((sbp)->sb_versionnum = \
428 ((sbp)->sb_versionnum | XFS_SB_VERSION_MOREBITSBIT), \
429 ((sbp)->sb_features2 = \
Nathan Scotta844f452005-11-02 14:38:42 +1100430 ((sbp)->sb_features2 | XFS_SB_VERSION2_ATTR2BIT)));
431}
432
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433/*
434 * end of superblock version macros
435 */
436
Nathan Scotta844f452005-11-02 14:38:42 +1100437#define XFS_SB_DADDR ((xfs_daddr_t)0) /* daddr in filesystem/ag */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438#define XFS_SB_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_SB_DADDR)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439#define XFS_BUF_TO_SBP(bp) ((xfs_sb_t *)XFS_BUF_PTR(bp))
Nathan Scotta844f452005-11-02 14:38:42 +1100440
441#define XFS_HDR_BLOCK(mp,d) ((xfs_agblock_t)XFS_BB_TO_FSBT(mp,d))
442#define XFS_DADDR_TO_FSB(mp,d) XFS_AGB_TO_FSB(mp, \
443 XFS_DADDR_TO_AGNO(mp,d), XFS_DADDR_TO_AGBNO(mp,d))
444#define XFS_FSB_TO_DADDR(mp,fsbno) XFS_AGB_TO_DADDR(mp, \
445 XFS_FSB_TO_AGNO(mp,fsbno), XFS_FSB_TO_AGBNO(mp,fsbno))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446
447/*
448 * File system sector to basic block conversions.
449 */
450#define XFS_FSS_TO_BB(mp,sec) ((sec) << (mp)->m_sectbb_log)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451
452/*
453 * File system block to basic block conversions.
454 */
455#define XFS_FSB_TO_BB(mp,fsbno) ((fsbno) << (mp)->m_blkbb_log)
456#define XFS_BB_TO_FSB(mp,bb) \
457 (((bb) + (XFS_FSB_TO_BB(mp,1) - 1)) >> (mp)->m_blkbb_log)
458#define XFS_BB_TO_FSBT(mp,bb) ((bb) >> (mp)->m_blkbb_log)
459#define XFS_BB_FSB_OFFSET(mp,bb) ((bb) & ((mp)->m_bsize - 1))
460
461/*
462 * File system block to byte conversions.
463 */
464#define XFS_FSB_TO_B(mp,fsbno) ((xfs_fsize_t)(fsbno) << (mp)->m_sb.sb_blocklog)
465#define XFS_B_TO_FSB(mp,b) \
466 ((((__uint64_t)(b)) + (mp)->m_blockmask) >> (mp)->m_sb.sb_blocklog)
467#define XFS_B_TO_FSBT(mp,b) (((__uint64_t)(b)) >> (mp)->m_sb.sb_blocklog)
468#define XFS_B_FSB_OFFSET(mp,b) ((b) & (mp)->m_blockmask)
469
470#endif /* __XFS_SB_H__ */