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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 LT |
17 | */ |
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 | ||
27 | struct xfs_buf; | |
28 | struct 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 | \ | |
d8cc890d NS |
61 | XFS_SB_VERSION_SECTORBIT | \ |
62 | XFS_SB_VERSION_MOREBITSBIT) | |
1da177e4 LT |
63 | #define XFS_SB_VERSION_OKREALBITS \ |
64 | (XFS_SB_VERSION_NUMBITS | \ | |
65 | XFS_SB_VERSION_OKREALFBITS | \ | |
66 | XFS_SB_VERSION_OKSASHFBITS) | |
1da177e4 LT |
67 | |
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 | |
92821e2b | 77 | #define XFS_SB_VERSION2_LAZYSBCOUNTBIT 0x00000002 /* Superblk counters */ |
d8cc890d NS |
78 | #define XFS_SB_VERSION2_RESERVED4BIT 0x00000004 |
79 | #define XFS_SB_VERSION2_ATTR2BIT 0x00000008 /* Inline attr rework */ | |
1da177e4 LT |
80 | |
81 | #define XFS_SB_VERSION2_OKREALFBITS \ | |
92821e2b DC |
82 | (XFS_SB_VERSION2_LAZYSBCOUNTBIT | \ |
83 | XFS_SB_VERSION2_ATTR2BIT) | |
1da177e4 LT |
84 | #define XFS_SB_VERSION2_OKSASHFBITS \ |
85 | (0) | |
86 | #define XFS_SB_VERSION2_OKREALBITS \ | |
87 | (XFS_SB_VERSION2_OKREALFBITS | \ | |
88 | XFS_SB_VERSION2_OKSASHFBITS ) | |
89 | ||
2bdf7cd0 CH |
90 | /* |
91 | * Superblock - in core version. Must match the ondisk version below. | |
ee1c0908 | 92 | * Must be padded to 64 bit alignment. |
2bdf7cd0 CH |
93 | */ |
94 | typedef struct xfs_sb { | |
1da177e4 LT |
95 | __uint32_t sb_magicnum; /* magic number == XFS_SB_MAGIC */ |
96 | __uint32_t sb_blocksize; /* logical block size, bytes */ | |
97 | xfs_drfsbno_t sb_dblocks; /* number of data blocks */ | |
98 | xfs_drfsbno_t sb_rblocks; /* number of realtime blocks */ | |
99 | xfs_drtbno_t sb_rextents; /* number of realtime extents */ | |
100 | uuid_t sb_uuid; /* file system unique id */ | |
101 | xfs_dfsbno_t sb_logstart; /* starting block of log if internal */ | |
102 | xfs_ino_t sb_rootino; /* root inode number */ | |
103 | xfs_ino_t sb_rbmino; /* bitmap inode for realtime extents */ | |
104 | xfs_ino_t sb_rsumino; /* summary inode for rt bitmap */ | |
105 | xfs_agblock_t sb_rextsize; /* realtime extent size, blocks */ | |
106 | xfs_agblock_t sb_agblocks; /* size of an allocation group */ | |
107 | xfs_agnumber_t sb_agcount; /* number of allocation groups */ | |
108 | xfs_extlen_t sb_rbmblocks; /* number of rt bitmap blocks */ | |
109 | xfs_extlen_t sb_logblocks; /* number of log blocks */ | |
110 | __uint16_t sb_versionnum; /* header version == XFS_SB_VERSION */ | |
111 | __uint16_t sb_sectsize; /* volume sector size, bytes */ | |
112 | __uint16_t sb_inodesize; /* inode size, bytes */ | |
113 | __uint16_t sb_inopblock; /* inodes per block */ | |
114 | char sb_fname[12]; /* file system name */ | |
115 | __uint8_t sb_blocklog; /* log2 of sb_blocksize */ | |
116 | __uint8_t sb_sectlog; /* log2 of sb_sectsize */ | |
117 | __uint8_t sb_inodelog; /* log2 of sb_inodesize */ | |
118 | __uint8_t sb_inopblog; /* log2 of sb_inopblock */ | |
119 | __uint8_t sb_agblklog; /* log2 of sb_agblocks (rounded up) */ | |
120 | __uint8_t sb_rextslog; /* log2 of sb_rextents */ | |
121 | __uint8_t sb_inprogress; /* mkfs is in progress, don't mount */ | |
122 | __uint8_t sb_imax_pct; /* max % of fs for inode space */ | |
123 | /* statistics */ | |
124 | /* | |
125 | * These fields must remain contiguous. If you really | |
126 | * want to change their layout, make sure you fix the | |
127 | * code in xfs_trans_apply_sb_deltas(). | |
128 | */ | |
129 | __uint64_t sb_icount; /* allocated inodes */ | |
130 | __uint64_t sb_ifree; /* free inodes */ | |
131 | __uint64_t sb_fdblocks; /* free data blocks */ | |
132 | __uint64_t sb_frextents; /* free realtime extents */ | |
133 | /* | |
134 | * End contiguous fields. | |
135 | */ | |
136 | xfs_ino_t sb_uquotino; /* user quota inode */ | |
137 | xfs_ino_t sb_gquotino; /* group quota inode */ | |
138 | __uint16_t sb_qflags; /* quota flags */ | |
139 | __uint8_t sb_flags; /* misc. flags */ | |
140 | __uint8_t sb_shared_vn; /* shared version number */ | |
141 | xfs_extlen_t sb_inoalignmt; /* inode chunk alignment, fsblocks */ | |
142 | __uint32_t sb_unit; /* stripe or raid unit */ | |
143 | __uint32_t sb_width; /* stripe or raid width */ | |
144 | __uint8_t sb_dirblklog; /* log2 of dir block size (fsbs) */ | |
145 | __uint8_t sb_logsectlog; /* log2 of the log sector size */ | |
146 | __uint16_t sb_logsectsize; /* sector size for the log, bytes */ | |
147 | __uint32_t sb_logsunit; /* stripe unit size for the log */ | |
d8cc890d | 148 | __uint32_t sb_features2; /* additional feature bits */ |
ee1c0908 DC |
149 | |
150 | /* | |
151 | * bad features2 field as a result of failing to pad the sb | |
152 | * structure to 64 bits. Some machines will be using this field | |
153 | * for features2 bits. Easiest just to mark it bad and not use | |
154 | * it for anything else. | |
155 | */ | |
156 | __uint32_t sb_bad_features2; | |
157 | ||
158 | /* must be padded to 64 bit alignment */ | |
1da177e4 LT |
159 | } xfs_sb_t; |
160 | ||
2bdf7cd0 | 161 | /* |
ee1c0908 DC |
162 | * Superblock - on disk version. Must match the in core version above. |
163 | * Must be padded to 64 bit alignment. | |
2bdf7cd0 CH |
164 | */ |
165 | typedef struct xfs_dsb { | |
166 | __be32 sb_magicnum; /* magic number == XFS_SB_MAGIC */ | |
167 | __be32 sb_blocksize; /* logical block size, bytes */ | |
168 | __be64 sb_dblocks; /* number of data blocks */ | |
169 | __be64 sb_rblocks; /* number of realtime blocks */ | |
170 | __be64 sb_rextents; /* number of realtime extents */ | |
171 | uuid_t sb_uuid; /* file system unique id */ | |
172 | __be64 sb_logstart; /* starting block of log if internal */ | |
173 | __be64 sb_rootino; /* root inode number */ | |
174 | __be64 sb_rbmino; /* bitmap inode for realtime extents */ | |
175 | __be64 sb_rsumino; /* summary inode for rt bitmap */ | |
176 | __be32 sb_rextsize; /* realtime extent size, blocks */ | |
177 | __be32 sb_agblocks; /* size of an allocation group */ | |
178 | __be32 sb_agcount; /* number of allocation groups */ | |
179 | __be32 sb_rbmblocks; /* number of rt bitmap blocks */ | |
180 | __be32 sb_logblocks; /* number of log blocks */ | |
181 | __be16 sb_versionnum; /* header version == XFS_SB_VERSION */ | |
182 | __be16 sb_sectsize; /* volume sector size, bytes */ | |
183 | __be16 sb_inodesize; /* inode size, bytes */ | |
184 | __be16 sb_inopblock; /* inodes per block */ | |
185 | char sb_fname[12]; /* file system name */ | |
186 | __u8 sb_blocklog; /* log2 of sb_blocksize */ | |
187 | __u8 sb_sectlog; /* log2 of sb_sectsize */ | |
188 | __u8 sb_inodelog; /* log2 of sb_inodesize */ | |
189 | __u8 sb_inopblog; /* log2 of sb_inopblock */ | |
190 | __u8 sb_agblklog; /* log2 of sb_agblocks (rounded up) */ | |
191 | __u8 sb_rextslog; /* log2 of sb_rextents */ | |
192 | __u8 sb_inprogress; /* mkfs is in progress, don't mount */ | |
193 | __u8 sb_imax_pct; /* max % of fs for inode space */ | |
194 | /* statistics */ | |
195 | /* | |
196 | * These fields must remain contiguous. If you really | |
197 | * want to change their layout, make sure you fix the | |
198 | * code in xfs_trans_apply_sb_deltas(). | |
199 | */ | |
200 | __be64 sb_icount; /* allocated inodes */ | |
201 | __be64 sb_ifree; /* free inodes */ | |
202 | __be64 sb_fdblocks; /* free data blocks */ | |
203 | __be64 sb_frextents; /* free realtime extents */ | |
204 | /* | |
205 | * End contiguous fields. | |
206 | */ | |
207 | __be64 sb_uquotino; /* user quota inode */ | |
208 | __be64 sb_gquotino; /* group quota inode */ | |
209 | __be16 sb_qflags; /* quota flags */ | |
210 | __u8 sb_flags; /* misc. flags */ | |
211 | __u8 sb_shared_vn; /* shared version number */ | |
212 | __be32 sb_inoalignmt; /* inode chunk alignment, fsblocks */ | |
213 | __be32 sb_unit; /* stripe or raid unit */ | |
214 | __be32 sb_width; /* stripe or raid width */ | |
215 | __u8 sb_dirblklog; /* log2 of dir block size (fsbs) */ | |
216 | __u8 sb_logsectlog; /* log2 of the log sector size */ | |
217 | __be16 sb_logsectsize; /* sector size for the log, bytes */ | |
218 | __be32 sb_logsunit; /* stripe unit size for the log */ | |
219 | __be32 sb_features2; /* additional feature bits */ | |
ee1c0908 DC |
220 | /* |
221 | * bad features2 field as a result of failing to pad the sb | |
222 | * structure to 64 bits. Some machines will be using this field | |
223 | * for features2 bits. Easiest just to mark it bad and not use | |
224 | * it for anything else. | |
225 | */ | |
226 | __be32 sb_bad_features2; | |
227 | ||
228 | /* must be padded to 64 bit alignment */ | |
2bdf7cd0 CH |
229 | } xfs_dsb_t; |
230 | ||
1da177e4 LT |
231 | /* |
232 | * Sequence number values for the fields. | |
233 | */ | |
234 | typedef enum { | |
235 | XFS_SBS_MAGICNUM, XFS_SBS_BLOCKSIZE, XFS_SBS_DBLOCKS, XFS_SBS_RBLOCKS, | |
236 | XFS_SBS_REXTENTS, XFS_SBS_UUID, XFS_SBS_LOGSTART, XFS_SBS_ROOTINO, | |
237 | XFS_SBS_RBMINO, XFS_SBS_RSUMINO, XFS_SBS_REXTSIZE, XFS_SBS_AGBLOCKS, | |
238 | XFS_SBS_AGCOUNT, XFS_SBS_RBMBLOCKS, XFS_SBS_LOGBLOCKS, | |
239 | XFS_SBS_VERSIONNUM, XFS_SBS_SECTSIZE, XFS_SBS_INODESIZE, | |
240 | XFS_SBS_INOPBLOCK, XFS_SBS_FNAME, XFS_SBS_BLOCKLOG, | |
241 | XFS_SBS_SECTLOG, XFS_SBS_INODELOG, XFS_SBS_INOPBLOG, XFS_SBS_AGBLKLOG, | |
242 | XFS_SBS_REXTSLOG, XFS_SBS_INPROGRESS, XFS_SBS_IMAX_PCT, XFS_SBS_ICOUNT, | |
243 | XFS_SBS_IFREE, XFS_SBS_FDBLOCKS, XFS_SBS_FREXTENTS, XFS_SBS_UQUOTINO, | |
244 | XFS_SBS_GQUOTINO, XFS_SBS_QFLAGS, XFS_SBS_FLAGS, XFS_SBS_SHARED_VN, | |
245 | XFS_SBS_INOALIGNMT, XFS_SBS_UNIT, XFS_SBS_WIDTH, XFS_SBS_DIRBLKLOG, | |
246 | XFS_SBS_LOGSECTLOG, XFS_SBS_LOGSECTSIZE, XFS_SBS_LOGSUNIT, | |
ee1c0908 | 247 | XFS_SBS_FEATURES2, XFS_SBS_BAD_FEATURES2, |
1da177e4 LT |
248 | XFS_SBS_FIELDCOUNT |
249 | } xfs_sb_field_t; | |
250 | ||
251 | /* | |
252 | * Mask values, defined based on the xfs_sb_field_t values. | |
253 | * Only define the ones we're using. | |
254 | */ | |
255 | #define XFS_SB_MVAL(x) (1LL << XFS_SBS_ ## x) | |
256 | #define XFS_SB_UUID XFS_SB_MVAL(UUID) | |
257 | #define XFS_SB_FNAME XFS_SB_MVAL(FNAME) | |
258 | #define XFS_SB_ROOTINO XFS_SB_MVAL(ROOTINO) | |
259 | #define XFS_SB_RBMINO XFS_SB_MVAL(RBMINO) | |
260 | #define XFS_SB_RSUMINO XFS_SB_MVAL(RSUMINO) | |
261 | #define XFS_SB_VERSIONNUM XFS_SB_MVAL(VERSIONNUM) | |
262 | #define XFS_SB_UQUOTINO XFS_SB_MVAL(UQUOTINO) | |
263 | #define XFS_SB_GQUOTINO XFS_SB_MVAL(GQUOTINO) | |
264 | #define XFS_SB_QFLAGS XFS_SB_MVAL(QFLAGS) | |
265 | #define XFS_SB_SHARED_VN XFS_SB_MVAL(SHARED_VN) | |
266 | #define XFS_SB_UNIT XFS_SB_MVAL(UNIT) | |
267 | #define XFS_SB_WIDTH XFS_SB_MVAL(WIDTH) | |
92821e2b DC |
268 | #define XFS_SB_ICOUNT XFS_SB_MVAL(ICOUNT) |
269 | #define XFS_SB_IFREE XFS_SB_MVAL(IFREE) | |
270 | #define XFS_SB_FDBLOCKS XFS_SB_MVAL(FDBLOCKS) | |
d8cc890d | 271 | #define XFS_SB_FEATURES2 XFS_SB_MVAL(FEATURES2) |
ee1c0908 | 272 | #define XFS_SB_BAD_FEATURES2 XFS_SB_MVAL(BAD_FEATURES2) |
1da177e4 LT |
273 | #define XFS_SB_NUM_BITS ((int)XFS_SBS_FIELDCOUNT) |
274 | #define XFS_SB_ALL_BITS ((1LL << XFS_SB_NUM_BITS) - 1) | |
275 | #define XFS_SB_MOD_BITS \ | |
276 | (XFS_SB_UUID | XFS_SB_ROOTINO | XFS_SB_RBMINO | XFS_SB_RSUMINO | \ | |
277 | XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | XFS_SB_GQUOTINO | \ | |
d8cc890d | 278 | XFS_SB_QFLAGS | XFS_SB_SHARED_VN | XFS_SB_UNIT | XFS_SB_WIDTH | \ |
ee1c0908 DC |
279 | XFS_SB_ICOUNT | XFS_SB_IFREE | XFS_SB_FDBLOCKS | XFS_SB_FEATURES2 | \ |
280 | XFS_SB_BAD_FEATURES2) | |
d8cc890d | 281 | |
1da177e4 LT |
282 | |
283 | /* | |
284 | * Misc. Flags - warning - these will be cleared by xfs_repair unless | |
285 | * a feature bit is set when the flag is used. | |
286 | */ | |
287 | #define XFS_SBF_NOFLAGS 0x00 /* no flags set */ | |
288 | #define XFS_SBF_READONLY 0x01 /* only read-only mounts allowed */ | |
289 | ||
290 | /* | |
291 | * define max. shared version we can interoperate with | |
292 | */ | |
293 | #define XFS_SB_MAX_SHARED_VN 0 | |
294 | ||
1da177e4 | 295 | #define XFS_SB_VERSION_NUM(sbp) ((sbp)->sb_versionnum & XFS_SB_VERSION_NUMBITS) |
1da177e4 | 296 | |
1da177e4 | 297 | #ifdef __KERNEL__ |
a844f451 NS |
298 | static inline int xfs_sb_good_version(xfs_sb_t *sbp) |
299 | { | |
300 | return (((sbp->sb_versionnum >= XFS_SB_VERSION_1) && \ | |
301 | (sbp->sb_versionnum <= XFS_SB_VERSION_3)) || \ | |
302 | ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
303 | !((sbp->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS) || \ | |
304 | ((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) && \ | |
305 | (sbp->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS))) && \ | |
306 | (sbp->sb_shared_vn <= XFS_SB_MAX_SHARED_VN))); | |
307 | } | |
308 | #else | |
309 | static inline int xfs_sb_good_version(xfs_sb_t *sbp) | |
310 | { | |
311 | return (((sbp->sb_versionnum >= XFS_SB_VERSION_1) && \ | |
312 | (sbp->sb_versionnum <= XFS_SB_VERSION_3)) || \ | |
313 | ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
314 | !((sbp->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS) || \ | |
315 | ((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) && \ | |
316 | (sbp->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS))) && \ | |
317 | (!(sbp->sb_versionnum & XFS_SB_VERSION_SHAREDBIT) || \ | |
318 | (sbp->sb_shared_vn <= XFS_SB_MAX_SHARED_VN)))); | |
319 | } | |
1da177e4 | 320 | #endif /* __KERNEL__ */ |
1da177e4 | 321 | |
ee1c0908 | 322 | /* |
e6957ea4 ES |
323 | * Detect a mismatched features2 field. Older kernels read/wrote |
324 | * this into the wrong slot, so to be safe we keep them in sync. | |
ee1c0908 | 325 | */ |
e6957ea4 | 326 | static inline int xfs_sb_has_mismatched_features2(xfs_sb_t *sbp) |
ee1c0908 | 327 | { |
e6957ea4 | 328 | return (sbp->sb_bad_features2 != sbp->sb_features2); |
ee1c0908 DC |
329 | } |
330 | ||
a844f451 NS |
331 | static inline unsigned xfs_sb_version_tonew(unsigned v) |
332 | { | |
333 | return ((((v) == XFS_SB_VERSION_1) ? \ | |
1da177e4 LT |
334 | 0 : \ |
335 | (((v) == XFS_SB_VERSION_2) ? \ | |
336 | XFS_SB_VERSION_ATTRBIT : \ | |
337 | (XFS_SB_VERSION_ATTRBIT | XFS_SB_VERSION_NLINKBIT))) | \ | |
a844f451 NS |
338 | XFS_SB_VERSION_4); |
339 | } | |
1da177e4 | 340 | |
a844f451 NS |
341 | static inline unsigned xfs_sb_version_toold(unsigned v) |
342 | { | |
343 | return (((v) & (XFS_SB_VERSION_QUOTABIT | XFS_SB_VERSION_ALIGNBIT)) ? \ | |
1da177e4 LT |
344 | 0 : \ |
345 | (((v) & XFS_SB_VERSION_NLINKBIT) ? \ | |
346 | XFS_SB_VERSION_3 : \ | |
347 | (((v) & XFS_SB_VERSION_ATTRBIT) ? \ | |
348 | XFS_SB_VERSION_2 : \ | |
a844f451 NS |
349 | XFS_SB_VERSION_1))); |
350 | } | |
1da177e4 | 351 | |
a844f451 NS |
352 | static inline int xfs_sb_version_hasattr(xfs_sb_t *sbp) |
353 | { | |
354 | return ((sbp)->sb_versionnum == XFS_SB_VERSION_2) || \ | |
355 | ((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \ | |
356 | ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
357 | ((sbp)->sb_versionnum & XFS_SB_VERSION_ATTRBIT)); | |
358 | } | |
1da177e4 | 359 | |
a844f451 NS |
360 | static inline void xfs_sb_version_addattr(xfs_sb_t *sbp) |
361 | { | |
362 | (sbp)->sb_versionnum = (((sbp)->sb_versionnum == XFS_SB_VERSION_1) ? \ | |
1da177e4 LT |
363 | XFS_SB_VERSION_2 : \ |
364 | ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) ? \ | |
365 | ((sbp)->sb_versionnum | XFS_SB_VERSION_ATTRBIT) : \ | |
a844f451 NS |
366 | (XFS_SB_VERSION_4 | XFS_SB_VERSION_ATTRBIT))); |
367 | } | |
1da177e4 | 368 | |
a844f451 NS |
369 | static inline int xfs_sb_version_hasnlink(xfs_sb_t *sbp) |
370 | { | |
371 | return ((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \ | |
372 | ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
373 | ((sbp)->sb_versionnum & XFS_SB_VERSION_NLINKBIT)); | |
374 | } | |
1da177e4 | 375 | |
a844f451 NS |
376 | static inline void xfs_sb_version_addnlink(xfs_sb_t *sbp) |
377 | { | |
378 | (sbp)->sb_versionnum = ((sbp)->sb_versionnum <= XFS_SB_VERSION_2 ? \ | |
1da177e4 | 379 | XFS_SB_VERSION_3 : \ |
a844f451 NS |
380 | ((sbp)->sb_versionnum | XFS_SB_VERSION_NLINKBIT)); |
381 | } | |
1da177e4 | 382 | |
a844f451 NS |
383 | static inline int xfs_sb_version_hasquota(xfs_sb_t *sbp) |
384 | { | |
385 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
386 | ((sbp)->sb_versionnum & XFS_SB_VERSION_QUOTABIT); | |
387 | } | |
1da177e4 | 388 | |
a844f451 NS |
389 | static inline void xfs_sb_version_addquota(xfs_sb_t *sbp) |
390 | { | |
391 | (sbp)->sb_versionnum = \ | |
392 | (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 ? \ | |
393 | ((sbp)->sb_versionnum | XFS_SB_VERSION_QUOTABIT) : \ | |
62118709 | 394 | (xfs_sb_version_tonew((sbp)->sb_versionnum) | \ |
a844f451 NS |
395 | XFS_SB_VERSION_QUOTABIT)); |
396 | } | |
397 | ||
a844f451 NS |
398 | static inline int xfs_sb_version_hasalign(xfs_sb_t *sbp) |
399 | { | |
400 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
401 | ((sbp)->sb_versionnum & XFS_SB_VERSION_ALIGNBIT); | |
402 | } | |
1da177e4 | 403 | |
a844f451 NS |
404 | static inline int xfs_sb_version_hasdalign(xfs_sb_t *sbp) |
405 | { | |
406 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
407 | ((sbp)->sb_versionnum & XFS_SB_VERSION_DALIGNBIT); | |
408 | } | |
1da177e4 | 409 | |
a844f451 NS |
410 | static inline int xfs_sb_version_hasshared(xfs_sb_t *sbp) |
411 | { | |
412 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
413 | ((sbp)->sb_versionnum & XFS_SB_VERSION_SHAREDBIT); | |
414 | } | |
1da177e4 | 415 | |
a844f451 NS |
416 | static inline int xfs_sb_version_hasdirv2(xfs_sb_t *sbp) |
417 | { | |
418 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
419 | ((sbp)->sb_versionnum & XFS_SB_VERSION_DIRV2BIT); | |
420 | } | |
1da177e4 | 421 | |
a844f451 NS |
422 | static inline int xfs_sb_version_haslogv2(xfs_sb_t *sbp) |
423 | { | |
424 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
425 | ((sbp)->sb_versionnum & XFS_SB_VERSION_LOGV2BIT); | |
426 | } | |
1da177e4 | 427 | |
a844f451 NS |
428 | static inline int xfs_sb_version_hasextflgbit(xfs_sb_t *sbp) |
429 | { | |
430 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
431 | ((sbp)->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT); | |
432 | } | |
1da177e4 | 433 | |
a844f451 NS |
434 | static inline int xfs_sb_version_hassector(xfs_sb_t *sbp) |
435 | { | |
436 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
437 | ((sbp)->sb_versionnum & XFS_SB_VERSION_SECTORBIT); | |
438 | } | |
1da177e4 | 439 | |
a844f451 NS |
440 | static inline int xfs_sb_version_hasmorebits(xfs_sb_t *sbp) |
441 | { | |
442 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
443 | ((sbp)->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT); | |
444 | } | |
1da177e4 LT |
445 | |
446 | /* | |
447 | * sb_features2 bit version macros. | |
448 | * | |
d8cc890d | 449 | * For example, for a bit defined as XFS_SB_VERSION2_FUNBIT, has a macro: |
1da177e4 | 450 | * |
d8cc890d | 451 | * SB_VERSION_HASFUNBIT(xfs_sb_t *sbp) |
62118709 | 452 | * ((xfs_sb_version_hasmorebits(sbp) && |
d8cc890d | 453 | * ((sbp)->sb_features2 & XFS_SB_VERSION2_FUNBIT) |
1da177e4 | 454 | */ |
a844f451 | 455 | |
92821e2b DC |
456 | static inline int xfs_sb_version_haslazysbcount(xfs_sb_t *sbp) |
457 | { | |
62118709 | 458 | return (xfs_sb_version_hasmorebits(sbp) && \ |
92821e2b DC |
459 | ((sbp)->sb_features2 & XFS_SB_VERSION2_LAZYSBCOUNTBIT)); |
460 | } | |
461 | ||
a844f451 NS |
462 | static inline int xfs_sb_version_hasattr2(xfs_sb_t *sbp) |
463 | { | |
62118709 | 464 | return (xfs_sb_version_hasmorebits(sbp)) && \ |
a844f451 NS |
465 | ((sbp)->sb_features2 & XFS_SB_VERSION2_ATTR2BIT); |
466 | } | |
1da177e4 | 467 | |
a844f451 NS |
468 | static inline void xfs_sb_version_addattr2(xfs_sb_t *sbp) |
469 | { | |
d8cc890d NS |
470 | ((sbp)->sb_versionnum = \ |
471 | ((sbp)->sb_versionnum | XFS_SB_VERSION_MOREBITSBIT), \ | |
472 | ((sbp)->sb_features2 = \ | |
a844f451 NS |
473 | ((sbp)->sb_features2 | XFS_SB_VERSION2_ATTR2BIT))); |
474 | } | |
475 | ||
1da177e4 LT |
476 | /* |
477 | * end of superblock version macros | |
478 | */ | |
479 | ||
a844f451 | 480 | #define XFS_SB_DADDR ((xfs_daddr_t)0) /* daddr in filesystem/ag */ |
1da177e4 | 481 | #define XFS_SB_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_SB_DADDR) |
2bdf7cd0 | 482 | #define XFS_BUF_TO_SBP(bp) ((xfs_dsb_t *)XFS_BUF_PTR(bp)) |
a844f451 NS |
483 | |
484 | #define XFS_HDR_BLOCK(mp,d) ((xfs_agblock_t)XFS_BB_TO_FSBT(mp,d)) | |
485 | #define XFS_DADDR_TO_FSB(mp,d) XFS_AGB_TO_FSB(mp, \ | |
486 | XFS_DADDR_TO_AGNO(mp,d), XFS_DADDR_TO_AGBNO(mp,d)) | |
487 | #define XFS_FSB_TO_DADDR(mp,fsbno) XFS_AGB_TO_DADDR(mp, \ | |
488 | XFS_FSB_TO_AGNO(mp,fsbno), XFS_FSB_TO_AGBNO(mp,fsbno)) | |
1da177e4 LT |
489 | |
490 | /* | |
491 | * File system sector to basic block conversions. | |
492 | */ | |
493 | #define XFS_FSS_TO_BB(mp,sec) ((sec) << (mp)->m_sectbb_log) | |
1da177e4 LT |
494 | |
495 | /* | |
496 | * File system block to basic block conversions. | |
497 | */ | |
498 | #define XFS_FSB_TO_BB(mp,fsbno) ((fsbno) << (mp)->m_blkbb_log) | |
499 | #define XFS_BB_TO_FSB(mp,bb) \ | |
500 | (((bb) + (XFS_FSB_TO_BB(mp,1) - 1)) >> (mp)->m_blkbb_log) | |
501 | #define XFS_BB_TO_FSBT(mp,bb) ((bb) >> (mp)->m_blkbb_log) | |
502 | #define XFS_BB_FSB_OFFSET(mp,bb) ((bb) & ((mp)->m_bsize - 1)) | |
503 | ||
504 | /* | |
505 | * File system block to byte conversions. | |
506 | */ | |
507 | #define XFS_FSB_TO_B(mp,fsbno) ((xfs_fsize_t)(fsbno) << (mp)->m_sb.sb_blocklog) | |
508 | #define XFS_B_TO_FSB(mp,b) \ | |
509 | ((((__uint64_t)(b)) + (mp)->m_blockmask) >> (mp)->m_sb.sb_blocklog) | |
510 | #define XFS_B_TO_FSBT(mp,b) (((__uint64_t)(b)) >> (mp)->m_sb.sb_blocklog) | |
511 | #define XFS_B_FSB_OFFSET(mp,b) ((b) & (mp)->m_blockmask) | |
512 | ||
513 | #endif /* __XFS_SB_H__ */ |