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ff55068c DC |
1 | /* |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. | |
3 | * All Rights Reserved. | |
4 | * | |
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 | |
7 | * published by the Free Software Foundation. | |
8 | * | |
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. | |
13 | * | |
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 | |
17 | */ | |
18 | #include "xfs.h" | |
19 | #include "xfs_fs.h" | |
632b89e8 | 20 | #include "xfs_shared.h" |
ff55068c | 21 | #include "xfs_format.h" |
239880ef DC |
22 | #include "xfs_log_format.h" |
23 | #include "xfs_trans_resv.h" | |
ff55068c | 24 | #include "xfs_bit.h" |
ff55068c | 25 | #include "xfs_sb.h" |
ff55068c | 26 | #include "xfs_mount.h" |
3ab78df2 | 27 | #include "xfs_defer.h" |
ff55068c | 28 | #include "xfs_inode.h" |
ff55068c DC |
29 | #include "xfs_ialloc.h" |
30 | #include "xfs_alloc.h" | |
ff55068c | 31 | #include "xfs_error.h" |
ff55068c DC |
32 | #include "xfs_trace.h" |
33 | #include "xfs_cksum.h" | |
239880ef | 34 | #include "xfs_trans.h" |
ff55068c | 35 | #include "xfs_buf_item.h" |
a4fbe6ab DC |
36 | #include "xfs_bmap_btree.h" |
37 | #include "xfs_alloc_btree.h" | |
38 | #include "xfs_ialloc_btree.h" | |
a45086e2 | 39 | #include "xfs_log.h" |
035e00ac | 40 | #include "xfs_rmap_btree.h" |
1946b91c DW |
41 | #include "xfs_bmap.h" |
42 | #include "xfs_refcount_btree.h" | |
c368ebcd DW |
43 | #include "xfs_da_format.h" |
44 | #include "xfs_da_btree.h" | |
ff55068c DC |
45 | |
46 | /* | |
47 | * Physical superblock buffer manipulations. Shared with libxfs in userspace. | |
48 | */ | |
49 | ||
ff55068c DC |
50 | /* |
51 | * Reference counting access wrappers to the perag structures. | |
52 | * Because we never free per-ag structures, the only thing we | |
53 | * have to protect against changes is the tree structure itself. | |
54 | */ | |
55 | struct xfs_perag * | |
56 | xfs_perag_get( | |
57 | struct xfs_mount *mp, | |
58 | xfs_agnumber_t agno) | |
59 | { | |
60 | struct xfs_perag *pag; | |
61 | int ref = 0; | |
62 | ||
63 | rcu_read_lock(); | |
64 | pag = radix_tree_lookup(&mp->m_perag_tree, agno); | |
65 | if (pag) { | |
66 | ASSERT(atomic_read(&pag->pag_ref) >= 0); | |
67 | ref = atomic_inc_return(&pag->pag_ref); | |
68 | } | |
69 | rcu_read_unlock(); | |
70 | trace_xfs_perag_get(mp, agno, ref, _RET_IP_); | |
71 | return pag; | |
72 | } | |
73 | ||
74 | /* | |
75 | * search from @first to find the next perag with the given tag set. | |
76 | */ | |
77 | struct xfs_perag * | |
78 | xfs_perag_get_tag( | |
79 | struct xfs_mount *mp, | |
80 | xfs_agnumber_t first, | |
81 | int tag) | |
82 | { | |
83 | struct xfs_perag *pag; | |
84 | int found; | |
85 | int ref; | |
86 | ||
87 | rcu_read_lock(); | |
88 | found = radix_tree_gang_lookup_tag(&mp->m_perag_tree, | |
89 | (void **)&pag, first, 1, tag); | |
90 | if (found <= 0) { | |
91 | rcu_read_unlock(); | |
92 | return NULL; | |
93 | } | |
94 | ref = atomic_inc_return(&pag->pag_ref); | |
95 | rcu_read_unlock(); | |
96 | trace_xfs_perag_get_tag(mp, pag->pag_agno, ref, _RET_IP_); | |
97 | return pag; | |
98 | } | |
99 | ||
100 | void | |
101 | xfs_perag_put( | |
102 | struct xfs_perag *pag) | |
103 | { | |
104 | int ref; | |
105 | ||
106 | ASSERT(atomic_read(&pag->pag_ref) > 0); | |
107 | ref = atomic_dec_return(&pag->pag_ref); | |
108 | trace_xfs_perag_put(pag->pag_mount, pag->pag_agno, ref, _RET_IP_); | |
109 | } | |
110 | ||
111 | /* | |
112 | * Check the validity of the SB found. | |
113 | */ | |
114 | STATIC int | |
115 | xfs_mount_validate_sb( | |
116 | xfs_mount_t *mp, | |
117 | xfs_sb_t *sbp, | |
118 | bool check_inprogress, | |
119 | bool check_version) | |
120 | { | |
ff55068c DC |
121 | if (sbp->sb_magicnum != XFS_SB_MAGIC) { |
122 | xfs_warn(mp, "bad magic number"); | |
2451337d | 123 | return -EWRONGFS; |
ff55068c DC |
124 | } |
125 | ||
126 | ||
127 | if (!xfs_sb_good_version(sbp)) { | |
128 | xfs_warn(mp, "bad version"); | |
2451337d | 129 | return -EWRONGFS; |
ff55068c DC |
130 | } |
131 | ||
132 | /* | |
133 | * Version 5 superblock feature mask validation. Reject combinations the | |
134 | * kernel cannot support up front before checking anything else. For | |
135 | * write validation, we don't need to check feature masks. | |
136 | */ | |
137 | if (check_version && XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) { | |
ff55068c DC |
138 | if (xfs_sb_has_compat_feature(sbp, |
139 | XFS_SB_FEAT_COMPAT_UNKNOWN)) { | |
140 | xfs_warn(mp, | |
f41febd2 | 141 | "Superblock has unknown compatible features (0x%x) enabled.", |
ff55068c DC |
142 | (sbp->sb_features_compat & |
143 | XFS_SB_FEAT_COMPAT_UNKNOWN)); | |
f41febd2 JP |
144 | xfs_warn(mp, |
145 | "Using a more recent kernel is recommended."); | |
ff55068c DC |
146 | } |
147 | ||
148 | if (xfs_sb_has_ro_compat_feature(sbp, | |
149 | XFS_SB_FEAT_RO_COMPAT_UNKNOWN)) { | |
150 | xfs_alert(mp, | |
151 | "Superblock has unknown read-only compatible features (0x%x) enabled.", | |
152 | (sbp->sb_features_ro_compat & | |
153 | XFS_SB_FEAT_RO_COMPAT_UNKNOWN)); | |
154 | if (!(mp->m_flags & XFS_MOUNT_RDONLY)) { | |
155 | xfs_warn(mp, | |
f41febd2 JP |
156 | "Attempted to mount read-only compatible filesystem read-write."); |
157 | xfs_warn(mp, | |
ff55068c | 158 | "Filesystem can only be safely mounted read only."); |
f41febd2 | 159 | |
2451337d | 160 | return -EINVAL; |
ff55068c DC |
161 | } |
162 | } | |
163 | if (xfs_sb_has_incompat_feature(sbp, | |
164 | XFS_SB_FEAT_INCOMPAT_UNKNOWN)) { | |
165 | xfs_warn(mp, | |
f41febd2 | 166 | "Superblock has unknown incompatible features (0x%x) enabled.", |
ff55068c DC |
167 | (sbp->sb_features_incompat & |
168 | XFS_SB_FEAT_INCOMPAT_UNKNOWN)); | |
f41febd2 JP |
169 | xfs_warn(mp, |
170 | "Filesystem can not be safely mounted by this kernel."); | |
2451337d | 171 | return -EINVAL; |
ff55068c | 172 | } |
a45086e2 BF |
173 | } else if (xfs_sb_version_hascrc(sbp)) { |
174 | /* | |
175 | * We can't read verify the sb LSN because the read verifier is | |
176 | * called before the log is allocated and processed. We know the | |
177 | * log is set up before write verifier (!check_version) calls, | |
178 | * so just check it here. | |
179 | */ | |
180 | if (!xfs_log_check_lsn(mp, sbp->sb_lsn)) | |
181 | return -EFSCORRUPTED; | |
ff55068c DC |
182 | } |
183 | ||
184 | if (xfs_sb_version_has_pquotino(sbp)) { | |
185 | if (sbp->sb_qflags & (XFS_OQUOTA_ENFD | XFS_OQUOTA_CHKD)) { | |
186 | xfs_notice(mp, | |
08e96e1a | 187 | "Version 5 of Super block has XFS_OQUOTA bits."); |
2451337d | 188 | return -EFSCORRUPTED; |
ff55068c DC |
189 | } |
190 | } else if (sbp->sb_qflags & (XFS_PQUOTA_ENFD | XFS_GQUOTA_ENFD | | |
191 | XFS_PQUOTA_CHKD | XFS_GQUOTA_CHKD)) { | |
192 | xfs_notice(mp, | |
08e96e1a | 193 | "Superblock earlier than Version 5 has XFS_[PQ]UOTA_{ENFD|CHKD} bits."); |
2451337d | 194 | return -EFSCORRUPTED; |
ff55068c DC |
195 | } |
196 | ||
e5376fc1 BF |
197 | /* |
198 | * Full inode chunks must be aligned to inode chunk size when | |
199 | * sparse inodes are enabled to support the sparse chunk | |
200 | * allocation algorithm and prevent overlapping inode records. | |
201 | */ | |
202 | if (xfs_sb_version_hassparseinodes(sbp)) { | |
203 | uint32_t align; | |
204 | ||
e5376fc1 BF |
205 | align = XFS_INODES_PER_CHUNK * sbp->sb_inodesize |
206 | >> sbp->sb_blocklog; | |
207 | if (sbp->sb_inoalignmt != align) { | |
208 | xfs_warn(mp, | |
209 | "Inode block alignment (%u) must match chunk size (%u) for sparse inodes.", | |
210 | sbp->sb_inoalignmt, align); | |
211 | return -EINVAL; | |
212 | } | |
213 | } | |
214 | ||
ff55068c DC |
215 | if (unlikely( |
216 | sbp->sb_logstart == 0 && mp->m_logdev_targp == mp->m_ddev_targp)) { | |
217 | xfs_warn(mp, | |
218 | "filesystem is marked as having an external log; " | |
219 | "specify logdev on the mount command line."); | |
2451337d | 220 | return -EINVAL; |
ff55068c DC |
221 | } |
222 | ||
223 | if (unlikely( | |
224 | sbp->sb_logstart != 0 && mp->m_logdev_targp != mp->m_ddev_targp)) { | |
225 | xfs_warn(mp, | |
226 | "filesystem is marked as having an internal log; " | |
227 | "do not specify logdev on the mount command line."); | |
2451337d | 228 | return -EINVAL; |
ff55068c DC |
229 | } |
230 | ||
231 | /* | |
232 | * More sanity checking. Most of these were stolen directly from | |
233 | * xfs_repair. | |
234 | */ | |
235 | if (unlikely( | |
236 | sbp->sb_agcount <= 0 || | |
237 | sbp->sb_sectsize < XFS_MIN_SECTORSIZE || | |
238 | sbp->sb_sectsize > XFS_MAX_SECTORSIZE || | |
239 | sbp->sb_sectlog < XFS_MIN_SECTORSIZE_LOG || | |
240 | sbp->sb_sectlog > XFS_MAX_SECTORSIZE_LOG || | |
241 | sbp->sb_sectsize != (1 << sbp->sb_sectlog) || | |
242 | sbp->sb_blocksize < XFS_MIN_BLOCKSIZE || | |
243 | sbp->sb_blocksize > XFS_MAX_BLOCKSIZE || | |
244 | sbp->sb_blocklog < XFS_MIN_BLOCKSIZE_LOG || | |
245 | sbp->sb_blocklog > XFS_MAX_BLOCKSIZE_LOG || | |
246 | sbp->sb_blocksize != (1 << sbp->sb_blocklog) || | |
83d230eb | 247 | sbp->sb_dirblklog + sbp->sb_blocklog > XFS_MAX_BLOCKSIZE_LOG || |
ff55068c DC |
248 | sbp->sb_inodesize < XFS_DINODE_MIN_SIZE || |
249 | sbp->sb_inodesize > XFS_DINODE_MAX_SIZE || | |
250 | sbp->sb_inodelog < XFS_DINODE_MIN_LOG || | |
251 | sbp->sb_inodelog > XFS_DINODE_MAX_LOG || | |
252 | sbp->sb_inodesize != (1 << sbp->sb_inodelog) || | |
e1b05723 | 253 | sbp->sb_logsunit > XLOG_MAX_RECORD_BSIZE || |
392c6de9 | 254 | sbp->sb_inopblock != howmany(sbp->sb_blocksize,sbp->sb_inodesize) || |
ff55068c DC |
255 | (sbp->sb_blocklog - sbp->sb_inodelog != sbp->sb_inopblog) || |
256 | (sbp->sb_rextsize * sbp->sb_blocksize > XFS_MAX_RTEXTSIZE) || | |
257 | (sbp->sb_rextsize * sbp->sb_blocksize < XFS_MIN_RTEXTSIZE) || | |
258 | (sbp->sb_imax_pct > 100 /* zero sb_imax_pct is valid */) || | |
259 | sbp->sb_dblocks == 0 || | |
260 | sbp->sb_dblocks > XFS_MAX_DBLOCKS(sbp) || | |
ab3e57b5 DC |
261 | sbp->sb_dblocks < XFS_MIN_DBLOCKS(sbp) || |
262 | sbp->sb_shared_vn != 0)) { | |
5ef11eb0 | 263 | xfs_notice(mp, "SB sanity check failed"); |
2451337d | 264 | return -EFSCORRUPTED; |
bec9d48d DW |
265 | } |
266 | ||
267 | if (xfs_sb_version_hascrc(&mp->m_sb) && | |
268 | sbp->sb_blocksize < XFS_MIN_CRC_BLOCKSIZE) { | |
269 | xfs_notice(mp, "v5 SB sanity check failed"); | |
270 | return -EFSCORRUPTED; | |
ff55068c DC |
271 | } |
272 | ||
273 | /* | |
274 | * Until this is fixed only page-sized or smaller data blocks work. | |
275 | */ | |
276 | if (unlikely(sbp->sb_blocksize > PAGE_SIZE)) { | |
277 | xfs_warn(mp, | |
278 | "File system with blocksize %d bytes. " | |
279 | "Only pagesize (%ld) or less will currently work.", | |
280 | sbp->sb_blocksize, PAGE_SIZE); | |
2451337d | 281 | return -ENOSYS; |
ff55068c DC |
282 | } |
283 | ||
284 | /* | |
285 | * Currently only very few inode sizes are supported. | |
286 | */ | |
287 | switch (sbp->sb_inodesize) { | |
288 | case 256: | |
289 | case 512: | |
290 | case 1024: | |
291 | case 2048: | |
292 | break; | |
293 | default: | |
294 | xfs_warn(mp, "inode size of %d bytes not supported", | |
295 | sbp->sb_inodesize); | |
2451337d | 296 | return -ENOSYS; |
ff55068c DC |
297 | } |
298 | ||
299 | if (xfs_sb_validate_fsb_count(sbp, sbp->sb_dblocks) || | |
300 | xfs_sb_validate_fsb_count(sbp, sbp->sb_rblocks)) { | |
301 | xfs_warn(mp, | |
302 | "file system too large to be mounted on this system."); | |
2451337d | 303 | return -EFBIG; |
ff55068c DC |
304 | } |
305 | ||
306 | if (check_inprogress && sbp->sb_inprogress) { | |
307 | xfs_warn(mp, "Offline file system operation in progress!"); | |
2451337d | 308 | return -EFSCORRUPTED; |
ff55068c | 309 | } |
ff55068c DC |
310 | return 0; |
311 | } | |
312 | ||
313 | void | |
314 | xfs_sb_quota_from_disk(struct xfs_sb *sbp) | |
315 | { | |
316 | /* | |
317 | * older mkfs doesn't initialize quota inodes to NULLFSINO. This | |
318 | * leads to in-core values having two different values for a quota | |
319 | * inode to be invalid: 0 and NULLFSINO. Change it to a single value | |
320 | * NULLFSINO. | |
321 | * | |
322 | * Note that this change affect only the in-core values. These | |
323 | * values are not written back to disk unless any quota information | |
324 | * is written to the disk. Even in that case, sb_pquotino field is | |
325 | * not written to disk unless the superblock supports pquotino. | |
326 | */ | |
327 | if (sbp->sb_uquotino == 0) | |
328 | sbp->sb_uquotino = NULLFSINO; | |
329 | if (sbp->sb_gquotino == 0) | |
330 | sbp->sb_gquotino = NULLFSINO; | |
331 | if (sbp->sb_pquotino == 0) | |
332 | sbp->sb_pquotino = NULLFSINO; | |
333 | ||
334 | /* | |
335 | * We need to do these manipilations only if we are working | |
336 | * with an older version of on-disk superblock. | |
337 | */ | |
338 | if (xfs_sb_version_has_pquotino(sbp)) | |
339 | return; | |
340 | ||
341 | if (sbp->sb_qflags & XFS_OQUOTA_ENFD) | |
342 | sbp->sb_qflags |= (sbp->sb_qflags & XFS_PQUOTA_ACCT) ? | |
343 | XFS_PQUOTA_ENFD : XFS_GQUOTA_ENFD; | |
344 | if (sbp->sb_qflags & XFS_OQUOTA_CHKD) | |
345 | sbp->sb_qflags |= (sbp->sb_qflags & XFS_PQUOTA_ACCT) ? | |
346 | XFS_PQUOTA_CHKD : XFS_GQUOTA_CHKD; | |
347 | sbp->sb_qflags &= ~(XFS_OQUOTA_ENFD | XFS_OQUOTA_CHKD); | |
348 | ||
e6fc6fcf ES |
349 | if (sbp->sb_qflags & XFS_PQUOTA_ACCT && |
350 | sbp->sb_gquotino != NULLFSINO) { | |
ff55068c DC |
351 | /* |
352 | * In older version of superblock, on-disk superblock only | |
353 | * has sb_gquotino, and in-core superblock has both sb_gquotino | |
354 | * and sb_pquotino. But, only one of them is supported at any | |
355 | * point of time. So, if PQUOTA is set in disk superblock, | |
e6fc6fcf ES |
356 | * copy over sb_gquotino to sb_pquotino. The NULLFSINO test |
357 | * above is to make sure we don't do this twice and wipe them | |
358 | * both out! | |
ff55068c DC |
359 | */ |
360 | sbp->sb_pquotino = sbp->sb_gquotino; | |
361 | sbp->sb_gquotino = NULLFSINO; | |
362 | } | |
363 | } | |
364 | ||
5ef828c4 ES |
365 | static void |
366 | __xfs_sb_from_disk( | |
ff55068c | 367 | struct xfs_sb *to, |
5ef828c4 ES |
368 | xfs_dsb_t *from, |
369 | bool convert_xquota) | |
ff55068c DC |
370 | { |
371 | to->sb_magicnum = be32_to_cpu(from->sb_magicnum); | |
372 | to->sb_blocksize = be32_to_cpu(from->sb_blocksize); | |
373 | to->sb_dblocks = be64_to_cpu(from->sb_dblocks); | |
374 | to->sb_rblocks = be64_to_cpu(from->sb_rblocks); | |
375 | to->sb_rextents = be64_to_cpu(from->sb_rextents); | |
376 | memcpy(&to->sb_uuid, &from->sb_uuid, sizeof(to->sb_uuid)); | |
377 | to->sb_logstart = be64_to_cpu(from->sb_logstart); | |
378 | to->sb_rootino = be64_to_cpu(from->sb_rootino); | |
379 | to->sb_rbmino = be64_to_cpu(from->sb_rbmino); | |
380 | to->sb_rsumino = be64_to_cpu(from->sb_rsumino); | |
381 | to->sb_rextsize = be32_to_cpu(from->sb_rextsize); | |
382 | to->sb_agblocks = be32_to_cpu(from->sb_agblocks); | |
383 | to->sb_agcount = be32_to_cpu(from->sb_agcount); | |
384 | to->sb_rbmblocks = be32_to_cpu(from->sb_rbmblocks); | |
385 | to->sb_logblocks = be32_to_cpu(from->sb_logblocks); | |
386 | to->sb_versionnum = be16_to_cpu(from->sb_versionnum); | |
387 | to->sb_sectsize = be16_to_cpu(from->sb_sectsize); | |
388 | to->sb_inodesize = be16_to_cpu(from->sb_inodesize); | |
389 | to->sb_inopblock = be16_to_cpu(from->sb_inopblock); | |
390 | memcpy(&to->sb_fname, &from->sb_fname, sizeof(to->sb_fname)); | |
391 | to->sb_blocklog = from->sb_blocklog; | |
392 | to->sb_sectlog = from->sb_sectlog; | |
393 | to->sb_inodelog = from->sb_inodelog; | |
394 | to->sb_inopblog = from->sb_inopblog; | |
395 | to->sb_agblklog = from->sb_agblklog; | |
396 | to->sb_rextslog = from->sb_rextslog; | |
397 | to->sb_inprogress = from->sb_inprogress; | |
398 | to->sb_imax_pct = from->sb_imax_pct; | |
399 | to->sb_icount = be64_to_cpu(from->sb_icount); | |
400 | to->sb_ifree = be64_to_cpu(from->sb_ifree); | |
401 | to->sb_fdblocks = be64_to_cpu(from->sb_fdblocks); | |
402 | to->sb_frextents = be64_to_cpu(from->sb_frextents); | |
403 | to->sb_uquotino = be64_to_cpu(from->sb_uquotino); | |
404 | to->sb_gquotino = be64_to_cpu(from->sb_gquotino); | |
405 | to->sb_qflags = be16_to_cpu(from->sb_qflags); | |
406 | to->sb_flags = from->sb_flags; | |
407 | to->sb_shared_vn = from->sb_shared_vn; | |
408 | to->sb_inoalignmt = be32_to_cpu(from->sb_inoalignmt); | |
409 | to->sb_unit = be32_to_cpu(from->sb_unit); | |
410 | to->sb_width = be32_to_cpu(from->sb_width); | |
411 | to->sb_dirblklog = from->sb_dirblklog; | |
412 | to->sb_logsectlog = from->sb_logsectlog; | |
413 | to->sb_logsectsize = be16_to_cpu(from->sb_logsectsize); | |
414 | to->sb_logsunit = be32_to_cpu(from->sb_logsunit); | |
415 | to->sb_features2 = be32_to_cpu(from->sb_features2); | |
416 | to->sb_bad_features2 = be32_to_cpu(from->sb_bad_features2); | |
417 | to->sb_features_compat = be32_to_cpu(from->sb_features_compat); | |
418 | to->sb_features_ro_compat = be32_to_cpu(from->sb_features_ro_compat); | |
419 | to->sb_features_incompat = be32_to_cpu(from->sb_features_incompat); | |
420 | to->sb_features_log_incompat = | |
421 | be32_to_cpu(from->sb_features_log_incompat); | |
04dd1a0d ES |
422 | /* crc is only used on disk, not in memory; just init to 0 here. */ |
423 | to->sb_crc = 0; | |
fb4f2b4e | 424 | to->sb_spino_align = be32_to_cpu(from->sb_spino_align); |
ff55068c DC |
425 | to->sb_pquotino = be64_to_cpu(from->sb_pquotino); |
426 | to->sb_lsn = be64_to_cpu(from->sb_lsn); | |
ce748eaa ES |
427 | /* |
428 | * sb_meta_uuid is only on disk if it differs from sb_uuid and the | |
429 | * feature flag is set; if not set we keep it only in memory. | |
430 | */ | |
431 | if (xfs_sb_version_hasmetauuid(to)) | |
432 | uuid_copy(&to->sb_meta_uuid, &from->sb_meta_uuid); | |
433 | else | |
434 | uuid_copy(&to->sb_meta_uuid, &from->sb_uuid); | |
5ef828c4 ES |
435 | /* Convert on-disk flags to in-memory flags? */ |
436 | if (convert_xquota) | |
437 | xfs_sb_quota_from_disk(to); | |
438 | } | |
439 | ||
440 | void | |
441 | xfs_sb_from_disk( | |
442 | struct xfs_sb *to, | |
443 | xfs_dsb_t *from) | |
444 | { | |
445 | __xfs_sb_from_disk(to, from, true); | |
ff55068c DC |
446 | } |
447 | ||
4d11a402 | 448 | static void |
ff55068c | 449 | xfs_sb_quota_to_disk( |
4d11a402 DC |
450 | struct xfs_dsb *to, |
451 | struct xfs_sb *from) | |
ff55068c | 452 | { |
c8ce540d | 453 | uint16_t qflags = from->sb_qflags; |
ff55068c | 454 | |
4d11a402 DC |
455 | to->sb_uquotino = cpu_to_be64(from->sb_uquotino); |
456 | if (xfs_sb_version_has_pquotino(from)) { | |
457 | to->sb_qflags = cpu_to_be16(from->sb_qflags); | |
458 | to->sb_gquotino = cpu_to_be64(from->sb_gquotino); | |
459 | to->sb_pquotino = cpu_to_be64(from->sb_pquotino); | |
460 | return; | |
461 | } | |
462 | ||
ff55068c | 463 | /* |
4d11a402 DC |
464 | * The in-core version of sb_qflags do not have XFS_OQUOTA_* |
465 | * flags, whereas the on-disk version does. So, convert incore | |
466 | * XFS_{PG}QUOTA_* flags to on-disk XFS_OQUOTA_* flags. | |
ff55068c | 467 | */ |
4d11a402 DC |
468 | qflags &= ~(XFS_PQUOTA_ENFD | XFS_PQUOTA_CHKD | |
469 | XFS_GQUOTA_ENFD | XFS_GQUOTA_CHKD); | |
ff55068c | 470 | |
4d11a402 DC |
471 | if (from->sb_qflags & |
472 | (XFS_PQUOTA_ENFD | XFS_GQUOTA_ENFD)) | |
473 | qflags |= XFS_OQUOTA_ENFD; | |
474 | if (from->sb_qflags & | |
475 | (XFS_PQUOTA_CHKD | XFS_GQUOTA_CHKD)) | |
476 | qflags |= XFS_OQUOTA_CHKD; | |
477 | to->sb_qflags = cpu_to_be16(qflags); | |
ff55068c DC |
478 | |
479 | /* | |
4d11a402 DC |
480 | * GQUOTINO and PQUOTINO cannot be used together in versions |
481 | * of superblock that do not have pquotino. from->sb_flags | |
482 | * tells us which quota is active and should be copied to | |
483 | * disk. If neither are active, we should NULL the inode. | |
03e01349 | 484 | * |
4d11a402 DC |
485 | * In all cases, the separate pquotino must remain 0 because it |
486 | * it beyond the "end" of the valid non-pquotino superblock. | |
ff55068c | 487 | */ |
4d11a402 | 488 | if (from->sb_qflags & XFS_GQUOTA_ACCT) |
ff55068c | 489 | to->sb_gquotino = cpu_to_be64(from->sb_gquotino); |
4d11a402 | 490 | else if (from->sb_qflags & XFS_PQUOTA_ACCT) |
ff55068c | 491 | to->sb_gquotino = cpu_to_be64(from->sb_pquotino); |
03e01349 DC |
492 | else { |
493 | /* | |
494 | * We can't rely on just the fields being logged to tell us | |
495 | * that it is safe to write NULLFSINO - we should only do that | |
496 | * if quotas are not actually enabled. Hence only write | |
497 | * NULLFSINO if both in-core quota inodes are NULL. | |
498 | */ | |
499 | if (from->sb_gquotino == NULLFSINO && | |
500 | from->sb_pquotino == NULLFSINO) | |
501 | to->sb_gquotino = cpu_to_be64(NULLFSINO); | |
502 | } | |
ff55068c | 503 | |
4d11a402 | 504 | to->sb_pquotino = 0; |
ff55068c DC |
505 | } |
506 | ||
ff55068c DC |
507 | void |
508 | xfs_sb_to_disk( | |
4d11a402 DC |
509 | struct xfs_dsb *to, |
510 | struct xfs_sb *from) | |
ff55068c | 511 | { |
4d11a402 DC |
512 | xfs_sb_quota_to_disk(to, from); |
513 | ||
514 | to->sb_magicnum = cpu_to_be32(from->sb_magicnum); | |
515 | to->sb_blocksize = cpu_to_be32(from->sb_blocksize); | |
516 | to->sb_dblocks = cpu_to_be64(from->sb_dblocks); | |
517 | to->sb_rblocks = cpu_to_be64(from->sb_rblocks); | |
518 | to->sb_rextents = cpu_to_be64(from->sb_rextents); | |
519 | memcpy(&to->sb_uuid, &from->sb_uuid, sizeof(to->sb_uuid)); | |
520 | to->sb_logstart = cpu_to_be64(from->sb_logstart); | |
521 | to->sb_rootino = cpu_to_be64(from->sb_rootino); | |
522 | to->sb_rbmino = cpu_to_be64(from->sb_rbmino); | |
523 | to->sb_rsumino = cpu_to_be64(from->sb_rsumino); | |
524 | to->sb_rextsize = cpu_to_be32(from->sb_rextsize); | |
525 | to->sb_agblocks = cpu_to_be32(from->sb_agblocks); | |
526 | to->sb_agcount = cpu_to_be32(from->sb_agcount); | |
527 | to->sb_rbmblocks = cpu_to_be32(from->sb_rbmblocks); | |
528 | to->sb_logblocks = cpu_to_be32(from->sb_logblocks); | |
529 | to->sb_versionnum = cpu_to_be16(from->sb_versionnum); | |
530 | to->sb_sectsize = cpu_to_be16(from->sb_sectsize); | |
531 | to->sb_inodesize = cpu_to_be16(from->sb_inodesize); | |
532 | to->sb_inopblock = cpu_to_be16(from->sb_inopblock); | |
533 | memcpy(&to->sb_fname, &from->sb_fname, sizeof(to->sb_fname)); | |
534 | to->sb_blocklog = from->sb_blocklog; | |
535 | to->sb_sectlog = from->sb_sectlog; | |
536 | to->sb_inodelog = from->sb_inodelog; | |
537 | to->sb_inopblog = from->sb_inopblog; | |
538 | to->sb_agblklog = from->sb_agblklog; | |
539 | to->sb_rextslog = from->sb_rextslog; | |
540 | to->sb_inprogress = from->sb_inprogress; | |
541 | to->sb_imax_pct = from->sb_imax_pct; | |
542 | to->sb_icount = cpu_to_be64(from->sb_icount); | |
543 | to->sb_ifree = cpu_to_be64(from->sb_ifree); | |
544 | to->sb_fdblocks = cpu_to_be64(from->sb_fdblocks); | |
545 | to->sb_frextents = cpu_to_be64(from->sb_frextents); | |
ff55068c | 546 | |
4d11a402 DC |
547 | to->sb_flags = from->sb_flags; |
548 | to->sb_shared_vn = from->sb_shared_vn; | |
549 | to->sb_inoalignmt = cpu_to_be32(from->sb_inoalignmt); | |
550 | to->sb_unit = cpu_to_be32(from->sb_unit); | |
551 | to->sb_width = cpu_to_be32(from->sb_width); | |
552 | to->sb_dirblklog = from->sb_dirblklog; | |
553 | to->sb_logsectlog = from->sb_logsectlog; | |
554 | to->sb_logsectsize = cpu_to_be16(from->sb_logsectsize); | |
555 | to->sb_logsunit = cpu_to_be32(from->sb_logsunit); | |
074e427b DC |
556 | |
557 | /* | |
558 | * We need to ensure that bad_features2 always matches features2. | |
559 | * Hence we enforce that here rather than having to remember to do it | |
560 | * everywhere else that updates features2. | |
561 | */ | |
562 | from->sb_bad_features2 = from->sb_features2; | |
4d11a402 DC |
563 | to->sb_features2 = cpu_to_be32(from->sb_features2); |
564 | to->sb_bad_features2 = cpu_to_be32(from->sb_bad_features2); | |
565 | ||
566 | if (xfs_sb_version_hascrc(from)) { | |
567 | to->sb_features_compat = cpu_to_be32(from->sb_features_compat); | |
568 | to->sb_features_ro_compat = | |
569 | cpu_to_be32(from->sb_features_ro_compat); | |
570 | to->sb_features_incompat = | |
571 | cpu_to_be32(from->sb_features_incompat); | |
572 | to->sb_features_log_incompat = | |
573 | cpu_to_be32(from->sb_features_log_incompat); | |
fb4f2b4e | 574 | to->sb_spino_align = cpu_to_be32(from->sb_spino_align); |
4d11a402 | 575 | to->sb_lsn = cpu_to_be64(from->sb_lsn); |
ce748eaa ES |
576 | if (xfs_sb_version_hasmetauuid(from)) |
577 | uuid_copy(&to->sb_meta_uuid, &from->sb_meta_uuid); | |
ff55068c DC |
578 | } |
579 | } | |
580 | ||
581 | static int | |
582 | xfs_sb_verify( | |
583 | struct xfs_buf *bp, | |
584 | bool check_version) | |
585 | { | |
586 | struct xfs_mount *mp = bp->b_target->bt_mount; | |
587 | struct xfs_sb sb; | |
588 | ||
5ef828c4 ES |
589 | /* |
590 | * Use call variant which doesn't convert quota flags from disk | |
591 | * format, because xfs_mount_validate_sb checks the on-disk flags. | |
592 | */ | |
593 | __xfs_sb_from_disk(&sb, XFS_BUF_TO_SBP(bp), false); | |
ff55068c DC |
594 | |
595 | /* | |
596 | * Only check the in progress field for the primary superblock as | |
597 | * mkfs.xfs doesn't clear it from secondary superblocks. | |
598 | */ | |
f3d7ebde DC |
599 | return xfs_mount_validate_sb(mp, &sb, |
600 | bp->b_maps[0].bm_bn == XFS_SB_DADDR, | |
ff55068c DC |
601 | check_version); |
602 | } | |
603 | ||
604 | /* | |
605 | * If the superblock has the CRC feature bit set or the CRC field is non-null, | |
606 | * check that the CRC is valid. We check the CRC field is non-null because a | |
607 | * single bit error could clear the feature bit and unused parts of the | |
608 | * superblock are supposed to be zero. Hence a non-null crc field indicates that | |
609 | * we've potentially lost a feature bit and we should check it anyway. | |
10e6e65d ES |
610 | * |
611 | * However, past bugs (i.e. in growfs) left non-zeroed regions beyond the | |
612 | * last field in V4 secondary superblocks. So for secondary superblocks, | |
613 | * we are more forgiving, and ignore CRC failures if the primary doesn't | |
614 | * indicate that the fs version is V5. | |
ff55068c DC |
615 | */ |
616 | static void | |
617 | xfs_sb_read_verify( | |
618 | struct xfs_buf *bp) | |
619 | { | |
620 | struct xfs_mount *mp = bp->b_target->bt_mount; | |
621 | struct xfs_dsb *dsb = XFS_BUF_TO_SBP(bp); | |
622 | int error; | |
623 | ||
624 | /* | |
625 | * open code the version check to avoid needing to convert the entire | |
626 | * superblock from disk order just to check the version number | |
627 | */ | |
628 | if (dsb->sb_magicnum == cpu_to_be32(XFS_SB_MAGIC) && | |
629 | (((be16_to_cpu(dsb->sb_versionnum) & XFS_SB_VERSION_NUMBITS) == | |
630 | XFS_SB_VERSION_5) || | |
631 | dsb->sb_crc != 0)) { | |
632 | ||
51582170 | 633 | if (!xfs_buf_verify_cksum(bp, XFS_SB_CRC_OFF)) { |
10e6e65d | 634 | /* Only fail bad secondaries on a known V5 filesystem */ |
7a01e707 | 635 | if (bp->b_bn == XFS_SB_DADDR || |
10e6e65d | 636 | xfs_sb_version_hascrc(&mp->m_sb)) { |
2451337d | 637 | error = -EFSBADCRC; |
10e6e65d ES |
638 | goto out_error; |
639 | } | |
ff55068c DC |
640 | } |
641 | } | |
642 | error = xfs_sb_verify(bp, true); | |
643 | ||
644 | out_error: | |
31ca03c9 | 645 | if (error == -EFSCORRUPTED || error == -EFSBADCRC) |
bc1a09b8 | 646 | xfs_verifier_error(bp, error, __this_address); |
31ca03c9 | 647 | else if (error) |
ff55068c | 648 | xfs_buf_ioerror(bp, error); |
ff55068c DC |
649 | } |
650 | ||
651 | /* | |
652 | * We may be probed for a filesystem match, so we may not want to emit | |
653 | * messages when the superblock buffer is not actually an XFS superblock. | |
2533787a | 654 | * If we find an XFS superblock, then run a normal, noisy mount because we are |
ff55068c DC |
655 | * really going to mount it and want to know about errors. |
656 | */ | |
657 | static void | |
658 | xfs_sb_quiet_read_verify( | |
659 | struct xfs_buf *bp) | |
660 | { | |
661 | struct xfs_dsb *dsb = XFS_BUF_TO_SBP(bp); | |
662 | ||
ff55068c DC |
663 | if (dsb->sb_magicnum == cpu_to_be32(XFS_SB_MAGIC)) { |
664 | /* XFS filesystem, verify noisily! */ | |
665 | xfs_sb_read_verify(bp); | |
666 | return; | |
667 | } | |
668 | /* quietly fail */ | |
2451337d | 669 | xfs_buf_ioerror(bp, -EWRONGFS); |
ff55068c DC |
670 | } |
671 | ||
672 | static void | |
673 | xfs_sb_write_verify( | |
674 | struct xfs_buf *bp) | |
675 | { | |
676 | struct xfs_mount *mp = bp->b_target->bt_mount; | |
677 | struct xfs_buf_log_item *bip = bp->b_fspriv; | |
678 | int error; | |
679 | ||
680 | error = xfs_sb_verify(bp, false); | |
681 | if (error) { | |
bc1a09b8 | 682 | xfs_verifier_error(bp, error, __this_address); |
ff55068c DC |
683 | return; |
684 | } | |
685 | ||
686 | if (!xfs_sb_version_hascrc(&mp->m_sb)) | |
687 | return; | |
688 | ||
689 | if (bip) | |
690 | XFS_BUF_TO_SBP(bp)->sb_lsn = cpu_to_be64(bip->bli_item.li_lsn); | |
691 | ||
f1dbcd7e | 692 | xfs_buf_update_cksum(bp, XFS_SB_CRC_OFF); |
ff55068c DC |
693 | } |
694 | ||
695 | const struct xfs_buf_ops xfs_sb_buf_ops = { | |
233135b7 | 696 | .name = "xfs_sb", |
ff55068c DC |
697 | .verify_read = xfs_sb_read_verify, |
698 | .verify_write = xfs_sb_write_verify, | |
699 | }; | |
700 | ||
701 | const struct xfs_buf_ops xfs_sb_quiet_buf_ops = { | |
233135b7 | 702 | .name = "xfs_sb_quiet", |
ff55068c DC |
703 | .verify_read = xfs_sb_quiet_read_verify, |
704 | .verify_write = xfs_sb_write_verify, | |
705 | }; | |
706 | ||
707 | /* | |
708 | * xfs_mount_common | |
709 | * | |
710 | * Mount initialization code establishing various mount | |
711 | * fields from the superblock associated with the given | |
712 | * mount structure | |
713 | */ | |
714 | void | |
715 | xfs_sb_mount_common( | |
716 | struct xfs_mount *mp, | |
717 | struct xfs_sb *sbp) | |
718 | { | |
719 | mp->m_agfrotor = mp->m_agirotor = 0; | |
720 | spin_lock_init(&mp->m_agirotor_lock); | |
721 | mp->m_maxagi = mp->m_sb.sb_agcount; | |
722 | mp->m_blkbit_log = sbp->sb_blocklog + XFS_NBBYLOG; | |
723 | mp->m_blkbb_log = sbp->sb_blocklog - BBSHIFT; | |
724 | mp->m_sectbb_log = sbp->sb_sectlog - BBSHIFT; | |
725 | mp->m_agno_log = xfs_highbit32(sbp->sb_agcount - 1) + 1; | |
726 | mp->m_agino_log = sbp->sb_inopblog + sbp->sb_agblklog; | |
727 | mp->m_blockmask = sbp->sb_blocksize - 1; | |
728 | mp->m_blockwsize = sbp->sb_blocksize >> XFS_WORDLOG; | |
729 | mp->m_blockwmask = mp->m_blockwsize - 1; | |
730 | ||
731 | mp->m_alloc_mxr[0] = xfs_allocbt_maxrecs(mp, sbp->sb_blocksize, 1); | |
732 | mp->m_alloc_mxr[1] = xfs_allocbt_maxrecs(mp, sbp->sb_blocksize, 0); | |
733 | mp->m_alloc_mnr[0] = mp->m_alloc_mxr[0] / 2; | |
734 | mp->m_alloc_mnr[1] = mp->m_alloc_mxr[1] / 2; | |
735 | ||
736 | mp->m_inobt_mxr[0] = xfs_inobt_maxrecs(mp, sbp->sb_blocksize, 1); | |
737 | mp->m_inobt_mxr[1] = xfs_inobt_maxrecs(mp, sbp->sb_blocksize, 0); | |
738 | mp->m_inobt_mnr[0] = mp->m_inobt_mxr[0] / 2; | |
739 | mp->m_inobt_mnr[1] = mp->m_inobt_mxr[1] / 2; | |
740 | ||
741 | mp->m_bmap_dmxr[0] = xfs_bmbt_maxrecs(mp, sbp->sb_blocksize, 1); | |
742 | mp->m_bmap_dmxr[1] = xfs_bmbt_maxrecs(mp, sbp->sb_blocksize, 0); | |
743 | mp->m_bmap_dmnr[0] = mp->m_bmap_dmxr[0] / 2; | |
744 | mp->m_bmap_dmnr[1] = mp->m_bmap_dmxr[1] / 2; | |
745 | ||
035e00ac DW |
746 | mp->m_rmap_mxr[0] = xfs_rmapbt_maxrecs(mp, sbp->sb_blocksize, 1); |
747 | mp->m_rmap_mxr[1] = xfs_rmapbt_maxrecs(mp, sbp->sb_blocksize, 0); | |
748 | mp->m_rmap_mnr[0] = mp->m_rmap_mxr[0] / 2; | |
749 | mp->m_rmap_mnr[1] = mp->m_rmap_mxr[1] / 2; | |
750 | ||
1946b91c DW |
751 | mp->m_refc_mxr[0] = xfs_refcountbt_maxrecs(mp, sbp->sb_blocksize, |
752 | true); | |
753 | mp->m_refc_mxr[1] = xfs_refcountbt_maxrecs(mp, sbp->sb_blocksize, | |
754 | false); | |
755 | mp->m_refc_mnr[0] = mp->m_refc_mxr[0] / 2; | |
756 | mp->m_refc_mnr[1] = mp->m_refc_mxr[1] / 2; | |
757 | ||
ff55068c | 758 | mp->m_bsize = XFS_FSB_TO_BB(mp, 1); |
c8ce540d | 759 | mp->m_ialloc_inos = (int)MAX((uint16_t)XFS_INODES_PER_CHUNK, |
ff55068c DC |
760 | sbp->sb_inopblock); |
761 | mp->m_ialloc_blks = mp->m_ialloc_inos >> sbp->sb_inopblog; | |
066a1884 BF |
762 | |
763 | if (sbp->sb_spino_align) | |
764 | mp->m_ialloc_min_blks = sbp->sb_spino_align; | |
765 | else | |
766 | mp->m_ialloc_min_blks = mp->m_ialloc_blks; | |
52548852 DW |
767 | mp->m_alloc_set_aside = xfs_alloc_set_aside(mp); |
768 | mp->m_ag_max_usable = xfs_alloc_ag_max_usable(mp); | |
ff55068c DC |
769 | } |
770 | ||
771 | /* | |
772 | * xfs_initialize_perag_data | |
773 | * | |
774 | * Read in each per-ag structure so we can count up the number of | |
775 | * allocated inodes, free inodes and used filesystem blocks as this | |
776 | * information is no longer persistent in the superblock. Once we have | |
777 | * this information, write it into the in-core superblock structure. | |
778 | */ | |
779 | int | |
780 | xfs_initialize_perag_data( | |
781 | struct xfs_mount *mp, | |
782 | xfs_agnumber_t agcount) | |
783 | { | |
784 | xfs_agnumber_t index; | |
785 | xfs_perag_t *pag; | |
786 | xfs_sb_t *sbp = &mp->m_sb; | |
787 | uint64_t ifree = 0; | |
788 | uint64_t ialloc = 0; | |
789 | uint64_t bfree = 0; | |
790 | uint64_t bfreelst = 0; | |
791 | uint64_t btree = 0; | |
792 | int error; | |
793 | ||
794 | for (index = 0; index < agcount; index++) { | |
795 | /* | |
796 | * read the agf, then the agi. This gets us | |
797 | * all the information we need and populates the | |
798 | * per-ag structures for us. | |
799 | */ | |
800 | error = xfs_alloc_pagf_init(mp, NULL, index, 0); | |
801 | if (error) | |
802 | return error; | |
803 | ||
804 | error = xfs_ialloc_pagi_init(mp, NULL, index); | |
805 | if (error) | |
806 | return error; | |
807 | pag = xfs_perag_get(mp, index); | |
808 | ifree += pag->pagi_freecount; | |
809 | ialloc += pag->pagi_count; | |
810 | bfree += pag->pagf_freeblks; | |
811 | bfreelst += pag->pagf_flcount; | |
812 | btree += pag->pagf_btreeblks; | |
813 | xfs_perag_put(pag); | |
814 | } | |
5681ca40 DC |
815 | |
816 | /* Overwrite incore superblock counters with just-read data */ | |
ff55068c DC |
817 | spin_lock(&mp->m_sb_lock); |
818 | sbp->sb_ifree = ifree; | |
819 | sbp->sb_icount = ialloc; | |
820 | sbp->sb_fdblocks = bfree + bfreelst + btree; | |
821 | spin_unlock(&mp->m_sb_lock); | |
822 | ||
5681ca40 | 823 | xfs_reinit_percpu_counters(mp); |
ff55068c DC |
824 | |
825 | return 0; | |
826 | } | |
827 | ||
828 | /* | |
61e63ecb DC |
829 | * xfs_log_sb() can be used to copy arbitrary changes to the in-core superblock |
830 | * into the superblock buffer to be logged. It does not provide the higher | |
831 | * level of locking that is needed to protect the in-core superblock from | |
832 | * concurrent access. | |
ff55068c DC |
833 | */ |
834 | void | |
61e63ecb | 835 | xfs_log_sb( |
4d11a402 | 836 | struct xfs_trans *tp) |
ff55068c | 837 | { |
4d11a402 DC |
838 | struct xfs_mount *mp = tp->t_mountp; |
839 | struct xfs_buf *bp = xfs_trans_getsb(tp, mp, 0); | |
ff55068c | 840 | |
501ab323 | 841 | mp->m_sb.sb_icount = percpu_counter_sum(&mp->m_icount); |
e88b64ea | 842 | mp->m_sb.sb_ifree = percpu_counter_sum(&mp->m_ifree); |
0d485ada | 843 | mp->m_sb.sb_fdblocks = percpu_counter_sum(&mp->m_fdblocks); |
501ab323 | 844 | |
4d11a402 | 845 | xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb); |
ff55068c | 846 | xfs_trans_buf_set_type(tp, bp, XFS_BLFT_SB_BUF); |
4d11a402 | 847 | xfs_trans_log_buf(tp, bp, 0, sizeof(struct xfs_dsb)); |
ff55068c | 848 | } |
61e63ecb DC |
849 | |
850 | /* | |
851 | * xfs_sync_sb | |
852 | * | |
853 | * Sync the superblock to disk. | |
854 | * | |
855 | * Note that the caller is responsible for checking the frozen state of the | |
856 | * filesystem. This procedure uses the non-blocking transaction allocator and | |
857 | * thus will allow modifications to a frozen fs. This is required because this | |
858 | * code can be called during the process of freezing where use of the high-level | |
859 | * allocator would deadlock. | |
860 | */ | |
861 | int | |
862 | xfs_sync_sb( | |
863 | struct xfs_mount *mp, | |
864 | bool wait) | |
865 | { | |
866 | struct xfs_trans *tp; | |
867 | int error; | |
868 | ||
253f4911 CH |
869 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_sb, 0, 0, |
870 | XFS_TRANS_NO_WRITECOUNT, &tp); | |
871 | if (error) | |
61e63ecb | 872 | return error; |
61e63ecb DC |
873 | |
874 | xfs_log_sb(tp); | |
875 | if (wait) | |
876 | xfs_trans_set_sync(tp); | |
70393313 | 877 | return xfs_trans_commit(tp); |
61e63ecb | 878 | } |
c368ebcd DW |
879 | |
880 | int | |
881 | xfs_fs_geometry( | |
ac503a4c DW |
882 | struct xfs_sb *sbp, |
883 | struct xfs_fsop_geom *geo, | |
884 | int struct_version) | |
c368ebcd | 885 | { |
ac503a4c DW |
886 | memset(geo, 0, sizeof(struct xfs_fsop_geom)); |
887 | ||
888 | geo->blocksize = sbp->sb_blocksize; | |
889 | geo->rtextsize = sbp->sb_rextsize; | |
890 | geo->agblocks = sbp->sb_agblocks; | |
891 | geo->agcount = sbp->sb_agcount; | |
892 | geo->logblocks = sbp->sb_logblocks; | |
893 | geo->sectsize = sbp->sb_sectsize; | |
894 | geo->inodesize = sbp->sb_inodesize; | |
895 | geo->imaxpct = sbp->sb_imax_pct; | |
896 | geo->datablocks = sbp->sb_dblocks; | |
897 | geo->rtblocks = sbp->sb_rblocks; | |
898 | geo->rtextents = sbp->sb_rextents; | |
899 | geo->logstart = sbp->sb_logstart; | |
900 | BUILD_BUG_ON(sizeof(geo->uuid) != sizeof(sbp->sb_uuid)); | |
901 | memcpy(geo->uuid, &sbp->sb_uuid, sizeof(sbp->sb_uuid)); | |
902 | ||
903 | if (struct_version < 2) | |
904 | return 0; | |
905 | ||
906 | geo->sunit = sbp->sb_unit; | |
907 | geo->swidth = sbp->sb_width; | |
908 | ||
909 | if (struct_version < 3) | |
910 | return 0; | |
911 | ||
912 | geo->version = XFS_FSOP_GEOM_VERSION; | |
913 | geo->flags = XFS_FSOP_GEOM_FLAGS_NLINK | | |
914 | XFS_FSOP_GEOM_FLAGS_DIRV2; | |
915 | if (xfs_sb_version_hasattr(sbp)) | |
916 | geo->flags |= XFS_FSOP_GEOM_FLAGS_ATTR; | |
917 | if (xfs_sb_version_hasquota(sbp)) | |
918 | geo->flags |= XFS_FSOP_GEOM_FLAGS_QUOTA; | |
919 | if (xfs_sb_version_hasalign(sbp)) | |
920 | geo->flags |= XFS_FSOP_GEOM_FLAGS_IALIGN; | |
921 | if (xfs_sb_version_hasdalign(sbp)) | |
922 | geo->flags |= XFS_FSOP_GEOM_FLAGS_DALIGN; | |
923 | if (xfs_sb_version_hasextflgbit(sbp)) | |
924 | geo->flags |= XFS_FSOP_GEOM_FLAGS_EXTFLG; | |
925 | if (xfs_sb_version_hassector(sbp)) | |
926 | geo->flags |= XFS_FSOP_GEOM_FLAGS_SECTOR; | |
927 | if (xfs_sb_version_hasasciici(sbp)) | |
928 | geo->flags |= XFS_FSOP_GEOM_FLAGS_DIRV2CI; | |
929 | if (xfs_sb_version_haslazysbcount(sbp)) | |
930 | geo->flags |= XFS_FSOP_GEOM_FLAGS_LAZYSB; | |
931 | if (xfs_sb_version_hasattr2(sbp)) | |
932 | geo->flags |= XFS_FSOP_GEOM_FLAGS_ATTR2; | |
933 | if (xfs_sb_version_hasprojid32bit(sbp)) | |
934 | geo->flags |= XFS_FSOP_GEOM_FLAGS_PROJID32; | |
935 | if (xfs_sb_version_hascrc(sbp)) | |
936 | geo->flags |= XFS_FSOP_GEOM_FLAGS_V5SB; | |
937 | if (xfs_sb_version_hasftype(sbp)) | |
938 | geo->flags |= XFS_FSOP_GEOM_FLAGS_FTYPE; | |
939 | if (xfs_sb_version_hasfinobt(sbp)) | |
940 | geo->flags |= XFS_FSOP_GEOM_FLAGS_FINOBT; | |
941 | if (xfs_sb_version_hassparseinodes(sbp)) | |
942 | geo->flags |= XFS_FSOP_GEOM_FLAGS_SPINODES; | |
943 | if (xfs_sb_version_hasrmapbt(sbp)) | |
944 | geo->flags |= XFS_FSOP_GEOM_FLAGS_RMAPBT; | |
945 | if (xfs_sb_version_hasreflink(sbp)) | |
946 | geo->flags |= XFS_FSOP_GEOM_FLAGS_REFLINK; | |
947 | if (xfs_sb_version_hassector(sbp)) | |
948 | geo->logsectsize = sbp->sb_logsectsize; | |
949 | else | |
950 | geo->logsectsize = BBSIZE; | |
951 | geo->rtsectsize = sbp->sb_blocksize; | |
952 | geo->dirblocksize = xfs_dir2_dirblock_bytes(sbp); | |
953 | ||
a8789a5a | 954 | if (struct_version < 4) |
ac503a4c DW |
955 | return 0; |
956 | ||
957 | if (xfs_sb_version_haslogv2(sbp)) | |
958 | geo->flags |= XFS_FSOP_GEOM_FLAGS_LOGV2; | |
959 | ||
960 | geo->logsunit = sbp->sb_logsunit; | |
c368ebcd | 961 | |
c368ebcd DW |
962 | return 0; |
963 | } |