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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 | |
189f4bf2 | 49 | #define XFS_SB_VERSION_BORGBIT 0x4000 /* ASCII only case-insens. */ |
1da177e4 LT |
50 | #define XFS_SB_VERSION_MOREBITSBIT 0x8000 |
51 | #define XFS_SB_VERSION_OKSASHFBITS \ | |
52 | (XFS_SB_VERSION_EXTFLGBIT | \ | |
189f4bf2 BN |
53 | XFS_SB_VERSION_DIRV2BIT | \ |
54 | XFS_SB_VERSION_BORGBIT) | |
1da177e4 LT |
55 | #define XFS_SB_VERSION_OKREALFBITS \ |
56 | (XFS_SB_VERSION_ATTRBIT | \ | |
57 | XFS_SB_VERSION_NLINKBIT | \ | |
58 | XFS_SB_VERSION_QUOTABIT | \ | |
59 | XFS_SB_VERSION_ALIGNBIT | \ | |
60 | XFS_SB_VERSION_DALIGNBIT | \ | |
61 | XFS_SB_VERSION_SHAREDBIT | \ | |
62 | XFS_SB_VERSION_LOGV2BIT | \ | |
d8cc890d NS |
63 | XFS_SB_VERSION_SECTORBIT | \ |
64 | XFS_SB_VERSION_MOREBITSBIT) | |
1da177e4 LT |
65 | #define XFS_SB_VERSION_OKREALBITS \ |
66 | (XFS_SB_VERSION_NUMBITS | \ | |
67 | XFS_SB_VERSION_OKREALFBITS | \ | |
68 | XFS_SB_VERSION_OKSASHFBITS) | |
1da177e4 LT |
69 | |
70 | /* | |
71 | * There are two words to hold XFS "feature" bits: the original | |
72 | * word, sb_versionnum, and sb_features2. Whenever a bit is set in | |
73 | * sb_features2, the feature bit XFS_SB_VERSION_MOREBITSBIT must be set. | |
74 | * | |
75 | * These defines represent bits in sb_features2. | |
76 | */ | |
77 | #define XFS_SB_VERSION2_REALFBITS 0x00ffffff /* Mask: features */ | |
78 | #define XFS_SB_VERSION2_RESERVED1BIT 0x00000001 | |
92821e2b | 79 | #define XFS_SB_VERSION2_LAZYSBCOUNTBIT 0x00000002 /* Superblk counters */ |
d8cc890d NS |
80 | #define XFS_SB_VERSION2_RESERVED4BIT 0x00000004 |
81 | #define XFS_SB_VERSION2_ATTR2BIT 0x00000008 /* Inline attr rework */ | |
1da177e4 LT |
82 | |
83 | #define XFS_SB_VERSION2_OKREALFBITS \ | |
92821e2b DC |
84 | (XFS_SB_VERSION2_LAZYSBCOUNTBIT | \ |
85 | XFS_SB_VERSION2_ATTR2BIT) | |
1da177e4 LT |
86 | #define XFS_SB_VERSION2_OKSASHFBITS \ |
87 | (0) | |
88 | #define XFS_SB_VERSION2_OKREALBITS \ | |
89 | (XFS_SB_VERSION2_OKREALFBITS | \ | |
90 | XFS_SB_VERSION2_OKSASHFBITS ) | |
91 | ||
2bdf7cd0 CH |
92 | /* |
93 | * Superblock - in core version. Must match the ondisk version below. | |
ee1c0908 | 94 | * Must be padded to 64 bit alignment. |
2bdf7cd0 CH |
95 | */ |
96 | typedef struct xfs_sb { | |
1da177e4 LT |
97 | __uint32_t sb_magicnum; /* magic number == XFS_SB_MAGIC */ |
98 | __uint32_t sb_blocksize; /* logical block size, bytes */ | |
99 | xfs_drfsbno_t sb_dblocks; /* number of data blocks */ | |
100 | xfs_drfsbno_t sb_rblocks; /* number of realtime blocks */ | |
101 | xfs_drtbno_t sb_rextents; /* number of realtime extents */ | |
102 | uuid_t sb_uuid; /* file system unique id */ | |
103 | xfs_dfsbno_t sb_logstart; /* starting block of log if internal */ | |
104 | xfs_ino_t sb_rootino; /* root inode number */ | |
105 | xfs_ino_t sb_rbmino; /* bitmap inode for realtime extents */ | |
106 | xfs_ino_t sb_rsumino; /* summary inode for rt bitmap */ | |
107 | xfs_agblock_t sb_rextsize; /* realtime extent size, blocks */ | |
108 | xfs_agblock_t sb_agblocks; /* size of an allocation group */ | |
109 | xfs_agnumber_t sb_agcount; /* number of allocation groups */ | |
110 | xfs_extlen_t sb_rbmblocks; /* number of rt bitmap blocks */ | |
111 | xfs_extlen_t sb_logblocks; /* number of log blocks */ | |
112 | __uint16_t sb_versionnum; /* header version == XFS_SB_VERSION */ | |
113 | __uint16_t sb_sectsize; /* volume sector size, bytes */ | |
114 | __uint16_t sb_inodesize; /* inode size, bytes */ | |
115 | __uint16_t sb_inopblock; /* inodes per block */ | |
116 | char sb_fname[12]; /* file system name */ | |
117 | __uint8_t sb_blocklog; /* log2 of sb_blocksize */ | |
118 | __uint8_t sb_sectlog; /* log2 of sb_sectsize */ | |
119 | __uint8_t sb_inodelog; /* log2 of sb_inodesize */ | |
120 | __uint8_t sb_inopblog; /* log2 of sb_inopblock */ | |
121 | __uint8_t sb_agblklog; /* log2 of sb_agblocks (rounded up) */ | |
122 | __uint8_t sb_rextslog; /* log2 of sb_rextents */ | |
123 | __uint8_t sb_inprogress; /* mkfs is in progress, don't mount */ | |
124 | __uint8_t sb_imax_pct; /* max % of fs for inode space */ | |
125 | /* statistics */ | |
126 | /* | |
127 | * These fields must remain contiguous. If you really | |
128 | * want to change their layout, make sure you fix the | |
129 | * code in xfs_trans_apply_sb_deltas(). | |
130 | */ | |
131 | __uint64_t sb_icount; /* allocated inodes */ | |
132 | __uint64_t sb_ifree; /* free inodes */ | |
133 | __uint64_t sb_fdblocks; /* free data blocks */ | |
134 | __uint64_t sb_frextents; /* free realtime extents */ | |
135 | /* | |
136 | * End contiguous fields. | |
137 | */ | |
138 | xfs_ino_t sb_uquotino; /* user quota inode */ | |
139 | xfs_ino_t sb_gquotino; /* group quota inode */ | |
140 | __uint16_t sb_qflags; /* quota flags */ | |
141 | __uint8_t sb_flags; /* misc. flags */ | |
142 | __uint8_t sb_shared_vn; /* shared version number */ | |
143 | xfs_extlen_t sb_inoalignmt; /* inode chunk alignment, fsblocks */ | |
144 | __uint32_t sb_unit; /* stripe or raid unit */ | |
145 | __uint32_t sb_width; /* stripe or raid width */ | |
146 | __uint8_t sb_dirblklog; /* log2 of dir block size (fsbs) */ | |
147 | __uint8_t sb_logsectlog; /* log2 of the log sector size */ | |
148 | __uint16_t sb_logsectsize; /* sector size for the log, bytes */ | |
149 | __uint32_t sb_logsunit; /* stripe unit size for the log */ | |
d8cc890d | 150 | __uint32_t sb_features2; /* additional feature bits */ |
ee1c0908 DC |
151 | |
152 | /* | |
153 | * bad features2 field as a result of failing to pad the sb | |
154 | * structure to 64 bits. Some machines will be using this field | |
155 | * for features2 bits. Easiest just to mark it bad and not use | |
156 | * it for anything else. | |
157 | */ | |
158 | __uint32_t sb_bad_features2; | |
159 | ||
160 | /* must be padded to 64 bit alignment */ | |
1da177e4 LT |
161 | } xfs_sb_t; |
162 | ||
2bdf7cd0 | 163 | /* |
ee1c0908 DC |
164 | * Superblock - on disk version. Must match the in core version above. |
165 | * Must be padded to 64 bit alignment. | |
2bdf7cd0 CH |
166 | */ |
167 | typedef struct xfs_dsb { | |
168 | __be32 sb_magicnum; /* magic number == XFS_SB_MAGIC */ | |
169 | __be32 sb_blocksize; /* logical block size, bytes */ | |
170 | __be64 sb_dblocks; /* number of data blocks */ | |
171 | __be64 sb_rblocks; /* number of realtime blocks */ | |
172 | __be64 sb_rextents; /* number of realtime extents */ | |
173 | uuid_t sb_uuid; /* file system unique id */ | |
174 | __be64 sb_logstart; /* starting block of log if internal */ | |
175 | __be64 sb_rootino; /* root inode number */ | |
176 | __be64 sb_rbmino; /* bitmap inode for realtime extents */ | |
177 | __be64 sb_rsumino; /* summary inode for rt bitmap */ | |
178 | __be32 sb_rextsize; /* realtime extent size, blocks */ | |
179 | __be32 sb_agblocks; /* size of an allocation group */ | |
180 | __be32 sb_agcount; /* number of allocation groups */ | |
181 | __be32 sb_rbmblocks; /* number of rt bitmap blocks */ | |
182 | __be32 sb_logblocks; /* number of log blocks */ | |
183 | __be16 sb_versionnum; /* header version == XFS_SB_VERSION */ | |
184 | __be16 sb_sectsize; /* volume sector size, bytes */ | |
185 | __be16 sb_inodesize; /* inode size, bytes */ | |
186 | __be16 sb_inopblock; /* inodes per block */ | |
187 | char sb_fname[12]; /* file system name */ | |
188 | __u8 sb_blocklog; /* log2 of sb_blocksize */ | |
189 | __u8 sb_sectlog; /* log2 of sb_sectsize */ | |
190 | __u8 sb_inodelog; /* log2 of sb_inodesize */ | |
191 | __u8 sb_inopblog; /* log2 of sb_inopblock */ | |
192 | __u8 sb_agblklog; /* log2 of sb_agblocks (rounded up) */ | |
193 | __u8 sb_rextslog; /* log2 of sb_rextents */ | |
194 | __u8 sb_inprogress; /* mkfs is in progress, don't mount */ | |
195 | __u8 sb_imax_pct; /* max % of fs for inode space */ | |
196 | /* statistics */ | |
197 | /* | |
198 | * These fields must remain contiguous. If you really | |
199 | * want to change their layout, make sure you fix the | |
200 | * code in xfs_trans_apply_sb_deltas(). | |
201 | */ | |
202 | __be64 sb_icount; /* allocated inodes */ | |
203 | __be64 sb_ifree; /* free inodes */ | |
204 | __be64 sb_fdblocks; /* free data blocks */ | |
205 | __be64 sb_frextents; /* free realtime extents */ | |
206 | /* | |
207 | * End contiguous fields. | |
208 | */ | |
209 | __be64 sb_uquotino; /* user quota inode */ | |
210 | __be64 sb_gquotino; /* group quota inode */ | |
211 | __be16 sb_qflags; /* quota flags */ | |
212 | __u8 sb_flags; /* misc. flags */ | |
213 | __u8 sb_shared_vn; /* shared version number */ | |
214 | __be32 sb_inoalignmt; /* inode chunk alignment, fsblocks */ | |
215 | __be32 sb_unit; /* stripe or raid unit */ | |
216 | __be32 sb_width; /* stripe or raid width */ | |
217 | __u8 sb_dirblklog; /* log2 of dir block size (fsbs) */ | |
218 | __u8 sb_logsectlog; /* log2 of the log sector size */ | |
219 | __be16 sb_logsectsize; /* sector size for the log, bytes */ | |
220 | __be32 sb_logsunit; /* stripe unit size for the log */ | |
221 | __be32 sb_features2; /* additional feature bits */ | |
ee1c0908 DC |
222 | /* |
223 | * bad features2 field as a result of failing to pad the sb | |
224 | * structure to 64 bits. Some machines will be using this field | |
225 | * for features2 bits. Easiest just to mark it bad and not use | |
226 | * it for anything else. | |
227 | */ | |
228 | __be32 sb_bad_features2; | |
229 | ||
230 | /* must be padded to 64 bit alignment */ | |
2bdf7cd0 CH |
231 | } xfs_dsb_t; |
232 | ||
1da177e4 LT |
233 | /* |
234 | * Sequence number values for the fields. | |
235 | */ | |
236 | typedef enum { | |
237 | XFS_SBS_MAGICNUM, XFS_SBS_BLOCKSIZE, XFS_SBS_DBLOCKS, XFS_SBS_RBLOCKS, | |
238 | XFS_SBS_REXTENTS, XFS_SBS_UUID, XFS_SBS_LOGSTART, XFS_SBS_ROOTINO, | |
239 | XFS_SBS_RBMINO, XFS_SBS_RSUMINO, XFS_SBS_REXTSIZE, XFS_SBS_AGBLOCKS, | |
240 | XFS_SBS_AGCOUNT, XFS_SBS_RBMBLOCKS, XFS_SBS_LOGBLOCKS, | |
241 | XFS_SBS_VERSIONNUM, XFS_SBS_SECTSIZE, XFS_SBS_INODESIZE, | |
242 | XFS_SBS_INOPBLOCK, XFS_SBS_FNAME, XFS_SBS_BLOCKLOG, | |
243 | XFS_SBS_SECTLOG, XFS_SBS_INODELOG, XFS_SBS_INOPBLOG, XFS_SBS_AGBLKLOG, | |
244 | XFS_SBS_REXTSLOG, XFS_SBS_INPROGRESS, XFS_SBS_IMAX_PCT, XFS_SBS_ICOUNT, | |
245 | XFS_SBS_IFREE, XFS_SBS_FDBLOCKS, XFS_SBS_FREXTENTS, XFS_SBS_UQUOTINO, | |
246 | XFS_SBS_GQUOTINO, XFS_SBS_QFLAGS, XFS_SBS_FLAGS, XFS_SBS_SHARED_VN, | |
247 | XFS_SBS_INOALIGNMT, XFS_SBS_UNIT, XFS_SBS_WIDTH, XFS_SBS_DIRBLKLOG, | |
248 | XFS_SBS_LOGSECTLOG, XFS_SBS_LOGSECTSIZE, XFS_SBS_LOGSUNIT, | |
ee1c0908 | 249 | XFS_SBS_FEATURES2, XFS_SBS_BAD_FEATURES2, |
1da177e4 LT |
250 | XFS_SBS_FIELDCOUNT |
251 | } xfs_sb_field_t; | |
252 | ||
253 | /* | |
254 | * Mask values, defined based on the xfs_sb_field_t values. | |
255 | * Only define the ones we're using. | |
256 | */ | |
257 | #define XFS_SB_MVAL(x) (1LL << XFS_SBS_ ## x) | |
258 | #define XFS_SB_UUID XFS_SB_MVAL(UUID) | |
259 | #define XFS_SB_FNAME XFS_SB_MVAL(FNAME) | |
260 | #define XFS_SB_ROOTINO XFS_SB_MVAL(ROOTINO) | |
261 | #define XFS_SB_RBMINO XFS_SB_MVAL(RBMINO) | |
262 | #define XFS_SB_RSUMINO XFS_SB_MVAL(RSUMINO) | |
263 | #define XFS_SB_VERSIONNUM XFS_SB_MVAL(VERSIONNUM) | |
264 | #define XFS_SB_UQUOTINO XFS_SB_MVAL(UQUOTINO) | |
265 | #define XFS_SB_GQUOTINO XFS_SB_MVAL(GQUOTINO) | |
266 | #define XFS_SB_QFLAGS XFS_SB_MVAL(QFLAGS) | |
267 | #define XFS_SB_SHARED_VN XFS_SB_MVAL(SHARED_VN) | |
268 | #define XFS_SB_UNIT XFS_SB_MVAL(UNIT) | |
269 | #define XFS_SB_WIDTH XFS_SB_MVAL(WIDTH) | |
92821e2b DC |
270 | #define XFS_SB_ICOUNT XFS_SB_MVAL(ICOUNT) |
271 | #define XFS_SB_IFREE XFS_SB_MVAL(IFREE) | |
272 | #define XFS_SB_FDBLOCKS XFS_SB_MVAL(FDBLOCKS) | |
d8cc890d | 273 | #define XFS_SB_FEATURES2 XFS_SB_MVAL(FEATURES2) |
ee1c0908 | 274 | #define XFS_SB_BAD_FEATURES2 XFS_SB_MVAL(BAD_FEATURES2) |
1da177e4 LT |
275 | #define XFS_SB_NUM_BITS ((int)XFS_SBS_FIELDCOUNT) |
276 | #define XFS_SB_ALL_BITS ((1LL << XFS_SB_NUM_BITS) - 1) | |
277 | #define XFS_SB_MOD_BITS \ | |
278 | (XFS_SB_UUID | XFS_SB_ROOTINO | XFS_SB_RBMINO | XFS_SB_RSUMINO | \ | |
279 | XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | XFS_SB_GQUOTINO | \ | |
d8cc890d | 280 | XFS_SB_QFLAGS | XFS_SB_SHARED_VN | XFS_SB_UNIT | XFS_SB_WIDTH | \ |
ee1c0908 DC |
281 | XFS_SB_ICOUNT | XFS_SB_IFREE | XFS_SB_FDBLOCKS | XFS_SB_FEATURES2 | \ |
282 | XFS_SB_BAD_FEATURES2) | |
d8cc890d | 283 | |
1da177e4 LT |
284 | |
285 | /* | |
286 | * Misc. Flags - warning - these will be cleared by xfs_repair unless | |
287 | * a feature bit is set when the flag is used. | |
288 | */ | |
289 | #define XFS_SBF_NOFLAGS 0x00 /* no flags set */ | |
290 | #define XFS_SBF_READONLY 0x01 /* only read-only mounts allowed */ | |
291 | ||
292 | /* | |
293 | * define max. shared version we can interoperate with | |
294 | */ | |
295 | #define XFS_SB_MAX_SHARED_VN 0 | |
296 | ||
1da177e4 | 297 | #define XFS_SB_VERSION_NUM(sbp) ((sbp)->sb_versionnum & XFS_SB_VERSION_NUMBITS) |
1da177e4 | 298 | |
1da177e4 | 299 | #ifdef __KERNEL__ |
a844f451 NS |
300 | static inline int xfs_sb_good_version(xfs_sb_t *sbp) |
301 | { | |
302 | return (((sbp->sb_versionnum >= XFS_SB_VERSION_1) && \ | |
303 | (sbp->sb_versionnum <= XFS_SB_VERSION_3)) || \ | |
304 | ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
305 | !((sbp->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS) || \ | |
306 | ((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) && \ | |
307 | (sbp->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS))) && \ | |
308 | (sbp->sb_shared_vn <= XFS_SB_MAX_SHARED_VN))); | |
309 | } | |
310 | #else | |
311 | static inline int xfs_sb_good_version(xfs_sb_t *sbp) | |
312 | { | |
313 | return (((sbp->sb_versionnum >= XFS_SB_VERSION_1) && \ | |
314 | (sbp->sb_versionnum <= XFS_SB_VERSION_3)) || \ | |
315 | ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
316 | !((sbp->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS) || \ | |
317 | ((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) && \ | |
318 | (sbp->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS))) && \ | |
319 | (!(sbp->sb_versionnum & XFS_SB_VERSION_SHAREDBIT) || \ | |
320 | (sbp->sb_shared_vn <= XFS_SB_MAX_SHARED_VN)))); | |
321 | } | |
1da177e4 | 322 | #endif /* __KERNEL__ */ |
1da177e4 | 323 | |
ee1c0908 | 324 | /* |
e6957ea4 ES |
325 | * Detect a mismatched features2 field. Older kernels read/wrote |
326 | * this into the wrong slot, so to be safe we keep them in sync. | |
ee1c0908 | 327 | */ |
e6957ea4 | 328 | static inline int xfs_sb_has_mismatched_features2(xfs_sb_t *sbp) |
ee1c0908 | 329 | { |
e6957ea4 | 330 | return (sbp->sb_bad_features2 != sbp->sb_features2); |
ee1c0908 DC |
331 | } |
332 | ||
a844f451 NS |
333 | static inline unsigned xfs_sb_version_tonew(unsigned v) |
334 | { | |
335 | return ((((v) == XFS_SB_VERSION_1) ? \ | |
1da177e4 LT |
336 | 0 : \ |
337 | (((v) == XFS_SB_VERSION_2) ? \ | |
338 | XFS_SB_VERSION_ATTRBIT : \ | |
339 | (XFS_SB_VERSION_ATTRBIT | XFS_SB_VERSION_NLINKBIT))) | \ | |
a844f451 NS |
340 | XFS_SB_VERSION_4); |
341 | } | |
1da177e4 | 342 | |
a844f451 NS |
343 | static inline unsigned xfs_sb_version_toold(unsigned v) |
344 | { | |
345 | return (((v) & (XFS_SB_VERSION_QUOTABIT | XFS_SB_VERSION_ALIGNBIT)) ? \ | |
1da177e4 LT |
346 | 0 : \ |
347 | (((v) & XFS_SB_VERSION_NLINKBIT) ? \ | |
348 | XFS_SB_VERSION_3 : \ | |
349 | (((v) & XFS_SB_VERSION_ATTRBIT) ? \ | |
350 | XFS_SB_VERSION_2 : \ | |
a844f451 NS |
351 | XFS_SB_VERSION_1))); |
352 | } | |
1da177e4 | 353 | |
a844f451 NS |
354 | static inline int xfs_sb_version_hasattr(xfs_sb_t *sbp) |
355 | { | |
356 | return ((sbp)->sb_versionnum == XFS_SB_VERSION_2) || \ | |
357 | ((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \ | |
358 | ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
359 | ((sbp)->sb_versionnum & XFS_SB_VERSION_ATTRBIT)); | |
360 | } | |
1da177e4 | 361 | |
a844f451 NS |
362 | static inline void xfs_sb_version_addattr(xfs_sb_t *sbp) |
363 | { | |
364 | (sbp)->sb_versionnum = (((sbp)->sb_versionnum == XFS_SB_VERSION_1) ? \ | |
1da177e4 LT |
365 | XFS_SB_VERSION_2 : \ |
366 | ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) ? \ | |
367 | ((sbp)->sb_versionnum | XFS_SB_VERSION_ATTRBIT) : \ | |
a844f451 NS |
368 | (XFS_SB_VERSION_4 | XFS_SB_VERSION_ATTRBIT))); |
369 | } | |
1da177e4 | 370 | |
a844f451 NS |
371 | static inline int xfs_sb_version_hasnlink(xfs_sb_t *sbp) |
372 | { | |
373 | return ((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \ | |
374 | ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
375 | ((sbp)->sb_versionnum & XFS_SB_VERSION_NLINKBIT)); | |
376 | } | |
1da177e4 | 377 | |
a844f451 NS |
378 | static inline void xfs_sb_version_addnlink(xfs_sb_t *sbp) |
379 | { | |
380 | (sbp)->sb_versionnum = ((sbp)->sb_versionnum <= XFS_SB_VERSION_2 ? \ | |
1da177e4 | 381 | XFS_SB_VERSION_3 : \ |
a844f451 NS |
382 | ((sbp)->sb_versionnum | XFS_SB_VERSION_NLINKBIT)); |
383 | } | |
1da177e4 | 384 | |
a844f451 NS |
385 | static inline int xfs_sb_version_hasquota(xfs_sb_t *sbp) |
386 | { | |
387 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
388 | ((sbp)->sb_versionnum & XFS_SB_VERSION_QUOTABIT); | |
389 | } | |
1da177e4 | 390 | |
a844f451 NS |
391 | static inline void xfs_sb_version_addquota(xfs_sb_t *sbp) |
392 | { | |
393 | (sbp)->sb_versionnum = \ | |
394 | (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 ? \ | |
395 | ((sbp)->sb_versionnum | XFS_SB_VERSION_QUOTABIT) : \ | |
62118709 | 396 | (xfs_sb_version_tonew((sbp)->sb_versionnum) | \ |
a844f451 NS |
397 | XFS_SB_VERSION_QUOTABIT)); |
398 | } | |
399 | ||
a844f451 NS |
400 | static inline int xfs_sb_version_hasalign(xfs_sb_t *sbp) |
401 | { | |
402 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
403 | ((sbp)->sb_versionnum & XFS_SB_VERSION_ALIGNBIT); | |
404 | } | |
1da177e4 | 405 | |
a844f451 NS |
406 | static inline int xfs_sb_version_hasdalign(xfs_sb_t *sbp) |
407 | { | |
408 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
409 | ((sbp)->sb_versionnum & XFS_SB_VERSION_DALIGNBIT); | |
410 | } | |
1da177e4 | 411 | |
a844f451 NS |
412 | static inline int xfs_sb_version_hasshared(xfs_sb_t *sbp) |
413 | { | |
414 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
415 | ((sbp)->sb_versionnum & XFS_SB_VERSION_SHAREDBIT); | |
416 | } | |
1da177e4 | 417 | |
a844f451 NS |
418 | static inline int xfs_sb_version_hasdirv2(xfs_sb_t *sbp) |
419 | { | |
420 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
421 | ((sbp)->sb_versionnum & XFS_SB_VERSION_DIRV2BIT); | |
422 | } | |
1da177e4 | 423 | |
a844f451 NS |
424 | static inline int xfs_sb_version_haslogv2(xfs_sb_t *sbp) |
425 | { | |
426 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
427 | ((sbp)->sb_versionnum & XFS_SB_VERSION_LOGV2BIT); | |
428 | } | |
1da177e4 | 429 | |
a844f451 NS |
430 | static inline int xfs_sb_version_hasextflgbit(xfs_sb_t *sbp) |
431 | { | |
432 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
433 | ((sbp)->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT); | |
434 | } | |
1da177e4 | 435 | |
a844f451 NS |
436 | static inline int xfs_sb_version_hassector(xfs_sb_t *sbp) |
437 | { | |
438 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
439 | ((sbp)->sb_versionnum & XFS_SB_VERSION_SECTORBIT); | |
440 | } | |
1da177e4 | 441 | |
189f4bf2 BN |
442 | static inline int xfs_sb_version_hasasciici(xfs_sb_t *sbp) |
443 | { | |
444 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
445 | (sbp->sb_versionnum & XFS_SB_VERSION_BORGBIT); | |
446 | } | |
447 | ||
a844f451 NS |
448 | static inline int xfs_sb_version_hasmorebits(xfs_sb_t *sbp) |
449 | { | |
450 | return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \ | |
451 | ((sbp)->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT); | |
452 | } | |
1da177e4 LT |
453 | |
454 | /* | |
455 | * sb_features2 bit version macros. | |
456 | * | |
d8cc890d | 457 | * For example, for a bit defined as XFS_SB_VERSION2_FUNBIT, has a macro: |
1da177e4 | 458 | * |
d8cc890d | 459 | * SB_VERSION_HASFUNBIT(xfs_sb_t *sbp) |
62118709 | 460 | * ((xfs_sb_version_hasmorebits(sbp) && |
d8cc890d | 461 | * ((sbp)->sb_features2 & XFS_SB_VERSION2_FUNBIT) |
1da177e4 | 462 | */ |
a844f451 | 463 | |
92821e2b DC |
464 | static inline int xfs_sb_version_haslazysbcount(xfs_sb_t *sbp) |
465 | { | |
62118709 | 466 | return (xfs_sb_version_hasmorebits(sbp) && \ |
92821e2b DC |
467 | ((sbp)->sb_features2 & XFS_SB_VERSION2_LAZYSBCOUNTBIT)); |
468 | } | |
469 | ||
a844f451 NS |
470 | static inline int xfs_sb_version_hasattr2(xfs_sb_t *sbp) |
471 | { | |
62118709 | 472 | return (xfs_sb_version_hasmorebits(sbp)) && \ |
a844f451 NS |
473 | ((sbp)->sb_features2 & XFS_SB_VERSION2_ATTR2BIT); |
474 | } | |
1da177e4 | 475 | |
a844f451 NS |
476 | static inline void xfs_sb_version_addattr2(xfs_sb_t *sbp) |
477 | { | |
d8cc890d NS |
478 | ((sbp)->sb_versionnum = \ |
479 | ((sbp)->sb_versionnum | XFS_SB_VERSION_MOREBITSBIT), \ | |
480 | ((sbp)->sb_features2 = \ | |
a844f451 NS |
481 | ((sbp)->sb_features2 | XFS_SB_VERSION2_ATTR2BIT))); |
482 | } | |
483 | ||
7c12f296 TS |
484 | static inline void xfs_sb_version_removeattr2(xfs_sb_t *sbp) |
485 | { | |
486 | sbp->sb_features2 &= ~XFS_SB_VERSION2_ATTR2BIT; | |
487 | if (!sbp->sb_features2) | |
488 | sbp->sb_versionnum &= ~XFS_SB_VERSION_MOREBITSBIT; | |
489 | } | |
490 | ||
1da177e4 LT |
491 | /* |
492 | * end of superblock version macros | |
493 | */ | |
494 | ||
a844f451 | 495 | #define XFS_SB_DADDR ((xfs_daddr_t)0) /* daddr in filesystem/ag */ |
1da177e4 | 496 | #define XFS_SB_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_SB_DADDR) |
2bdf7cd0 | 497 | #define XFS_BUF_TO_SBP(bp) ((xfs_dsb_t *)XFS_BUF_PTR(bp)) |
a844f451 NS |
498 | |
499 | #define XFS_HDR_BLOCK(mp,d) ((xfs_agblock_t)XFS_BB_TO_FSBT(mp,d)) | |
500 | #define XFS_DADDR_TO_FSB(mp,d) XFS_AGB_TO_FSB(mp, \ | |
501 | XFS_DADDR_TO_AGNO(mp,d), XFS_DADDR_TO_AGBNO(mp,d)) | |
502 | #define XFS_FSB_TO_DADDR(mp,fsbno) XFS_AGB_TO_DADDR(mp, \ | |
503 | XFS_FSB_TO_AGNO(mp,fsbno), XFS_FSB_TO_AGBNO(mp,fsbno)) | |
1da177e4 LT |
504 | |
505 | /* | |
506 | * File system sector to basic block conversions. | |
507 | */ | |
508 | #define XFS_FSS_TO_BB(mp,sec) ((sec) << (mp)->m_sectbb_log) | |
1da177e4 LT |
509 | |
510 | /* | |
511 | * File system block to basic block conversions. | |
512 | */ | |
513 | #define XFS_FSB_TO_BB(mp,fsbno) ((fsbno) << (mp)->m_blkbb_log) | |
514 | #define XFS_BB_TO_FSB(mp,bb) \ | |
515 | (((bb) + (XFS_FSB_TO_BB(mp,1) - 1)) >> (mp)->m_blkbb_log) | |
516 | #define XFS_BB_TO_FSBT(mp,bb) ((bb) >> (mp)->m_blkbb_log) | |
517 | #define XFS_BB_FSB_OFFSET(mp,bb) ((bb) & ((mp)->m_bsize - 1)) | |
518 | ||
519 | /* | |
520 | * File system block to byte conversions. | |
521 | */ | |
522 | #define XFS_FSB_TO_B(mp,fsbno) ((xfs_fsize_t)(fsbno) << (mp)->m_sb.sb_blocklog) | |
523 | #define XFS_B_TO_FSB(mp,b) \ | |
524 | ((((__uint64_t)(b)) + (mp)->m_blockmask) >> (mp)->m_sb.sb_blocklog) | |
525 | #define XFS_B_TO_FSBT(mp,b) (((__uint64_t)(b)) >> (mp)->m_sb.sb_blocklog) | |
526 | #define XFS_B_FSB_OFFSET(mp,b) ((b) & (mp)->m_blockmask) | |
527 | ||
528 | #endif /* __XFS_SB_H__ */ |