Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
4ce3121f NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
4ce3121f 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 | * | |
4ce3121f 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 | * |
4ce3121f 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 | 17 | */ |
1da177e4 LT |
18 | #include "xfs.h" |
19 | #include "xfs_fs.h" | |
6ca1c906 | 20 | #include "xfs_format.h" |
a844f451 | 21 | #include "xfs_bit.h" |
1da177e4 | 22 | #include "xfs_log.h" |
1da177e4 LT |
23 | #include "xfs_trans.h" |
24 | #include "xfs_sb.h" | |
25 | #include "xfs_ag.h" | |
1da177e4 | 26 | #include "xfs_alloc.h" |
1da177e4 LT |
27 | #include "xfs_quota.h" |
28 | #include "xfs_mount.h" | |
1da177e4 LT |
29 | #include "xfs_bmap_btree.h" |
30 | #include "xfs_ialloc_btree.h" | |
1da177e4 LT |
31 | #include "xfs_dinode.h" |
32 | #include "xfs_inode.h" | |
a844f451 NS |
33 | #include "xfs_ialloc.h" |
34 | #include "xfs_itable.h" | |
1da177e4 LT |
35 | #include "xfs_rtalloc.h" |
36 | #include "xfs_error.h" | |
a844f451 | 37 | #include "xfs_bmap.h" |
1da177e4 LT |
38 | #include "xfs_attr.h" |
39 | #include "xfs_buf_item.h" | |
40 | #include "xfs_trans_space.h" | |
1da177e4 | 41 | #include "xfs_qm.h" |
0b1b213f | 42 | #include "xfs_trace.h" |
33479e05 | 43 | #include "xfs_icache.h" |
6fcdc59d | 44 | #include "xfs_cksum.h" |
1da177e4 LT |
45 | |
46 | /* | |
47 | * The global quota manager. There is only one of these for the entire | |
48 | * system, _not_ one per file system. XQM keeps track of the overall | |
49 | * quota functionality, including maintaining the freelist and hash | |
50 | * tables of dquots. | |
51 | */ | |
1da177e4 | 52 | STATIC int xfs_qm_init_quotainos(xfs_mount_t *); |
ba0f32d4 | 53 | STATIC int xfs_qm_init_quotainfo(xfs_mount_t *); |
1495f230 | 54 | STATIC int xfs_qm_shake(struct shrinker *, struct shrink_control *); |
1da177e4 | 55 | |
b84a3a96 CH |
56 | /* |
57 | * We use the batch lookup interface to iterate over the dquots as it | |
58 | * currently is the only interface into the radix tree code that allows | |
59 | * fuzzy lookups instead of exact matches. Holding the lock over multiple | |
60 | * operations is fine as all callers are used either during mount/umount | |
61 | * or quotaoff. | |
62 | */ | |
63 | #define XFS_DQ_LOOKUP_BATCH 32 | |
64 | ||
65 | STATIC int | |
66 | xfs_qm_dquot_walk( | |
67 | struct xfs_mount *mp, | |
68 | int type, | |
43ff2122 CH |
69 | int (*execute)(struct xfs_dquot *dqp, void *data), |
70 | void *data) | |
b84a3a96 CH |
71 | { |
72 | struct xfs_quotainfo *qi = mp->m_quotainfo; | |
329e0875 | 73 | struct radix_tree_root *tree = xfs_dquot_tree(qi, type); |
b84a3a96 CH |
74 | uint32_t next_index; |
75 | int last_error = 0; | |
76 | int skipped; | |
77 | int nr_found; | |
78 | ||
79 | restart: | |
80 | skipped = 0; | |
81 | next_index = 0; | |
82 | nr_found = 0; | |
83 | ||
84 | while (1) { | |
85 | struct xfs_dquot *batch[XFS_DQ_LOOKUP_BATCH]; | |
86 | int error = 0; | |
87 | int i; | |
88 | ||
89 | mutex_lock(&qi->qi_tree_lock); | |
90 | nr_found = radix_tree_gang_lookup(tree, (void **)batch, | |
91 | next_index, XFS_DQ_LOOKUP_BATCH); | |
92 | if (!nr_found) { | |
93 | mutex_unlock(&qi->qi_tree_lock); | |
94 | break; | |
95 | } | |
96 | ||
97 | for (i = 0; i < nr_found; i++) { | |
98 | struct xfs_dquot *dqp = batch[i]; | |
99 | ||
100 | next_index = be32_to_cpu(dqp->q_core.d_id) + 1; | |
101 | ||
43ff2122 | 102 | error = execute(batch[i], data); |
b84a3a96 CH |
103 | if (error == EAGAIN) { |
104 | skipped++; | |
105 | continue; | |
106 | } | |
107 | if (error && last_error != EFSCORRUPTED) | |
108 | last_error = error; | |
109 | } | |
110 | ||
111 | mutex_unlock(&qi->qi_tree_lock); | |
112 | ||
113 | /* bail out if the filesystem is corrupted. */ | |
114 | if (last_error == EFSCORRUPTED) { | |
115 | skipped = 0; | |
116 | break; | |
117 | } | |
118 | } | |
119 | ||
120 | if (skipped) { | |
121 | delay(1); | |
122 | goto restart; | |
123 | } | |
124 | ||
125 | return last_error; | |
126 | } | |
127 | ||
128 | ||
129 | /* | |
130 | * Purge a dquot from all tracking data structures and free it. | |
131 | */ | |
132 | STATIC int | |
133 | xfs_qm_dqpurge( | |
43ff2122 CH |
134 | struct xfs_dquot *dqp, |
135 | void *data) | |
b84a3a96 CH |
136 | { |
137 | struct xfs_mount *mp = dqp->q_mount; | |
138 | struct xfs_quotainfo *qi = mp->m_quotainfo; | |
139 | struct xfs_dquot *gdqp = NULL; | |
92f8ff73 | 140 | struct xfs_dquot *pdqp = NULL; |
b84a3a96 CH |
141 | |
142 | xfs_dqlock(dqp); | |
143 | if ((dqp->dq_flags & XFS_DQ_FREEING) || dqp->q_nrefs != 0) { | |
144 | xfs_dqunlock(dqp); | |
145 | return EAGAIN; | |
146 | } | |
147 | ||
148 | /* | |
92f8ff73 | 149 | * If this quota has a hint attached, prepare for releasing it now. |
b84a3a96 CH |
150 | */ |
151 | gdqp = dqp->q_gdquot; | |
152 | if (gdqp) { | |
153 | xfs_dqlock(gdqp); | |
154 | dqp->q_gdquot = NULL; | |
155 | } | |
156 | ||
92f8ff73 CS |
157 | pdqp = dqp->q_pdquot; |
158 | if (pdqp) { | |
159 | xfs_dqlock(pdqp); | |
160 | dqp->q_pdquot = NULL; | |
161 | } | |
162 | ||
b84a3a96 CH |
163 | dqp->dq_flags |= XFS_DQ_FREEING; |
164 | ||
43ff2122 | 165 | xfs_dqflock(dqp); |
b84a3a96 CH |
166 | |
167 | /* | |
168 | * If we are turning this type of quotas off, we don't care | |
169 | * about the dirty metadata sitting in this dquot. OTOH, if | |
170 | * we're unmounting, we do care, so we flush it and wait. | |
171 | */ | |
172 | if (XFS_DQ_IS_DIRTY(dqp)) { | |
fe7257fd CH |
173 | struct xfs_buf *bp = NULL; |
174 | int error; | |
b84a3a96 CH |
175 | |
176 | /* | |
177 | * We don't care about getting disk errors here. We need | |
178 | * to purge this dquot anyway, so we go ahead regardless. | |
179 | */ | |
fe7257fd CH |
180 | error = xfs_qm_dqflush(dqp, &bp); |
181 | if (error) { | |
b84a3a96 CH |
182 | xfs_warn(mp, "%s: dquot %p flush failed", |
183 | __func__, dqp); | |
fe7257fd CH |
184 | } else { |
185 | error = xfs_bwrite(bp); | |
186 | xfs_buf_relse(bp); | |
187 | } | |
b84a3a96 CH |
188 | xfs_dqflock(dqp); |
189 | } | |
190 | ||
191 | ASSERT(atomic_read(&dqp->q_pincount) == 0); | |
192 | ASSERT(XFS_FORCED_SHUTDOWN(mp) || | |
193 | !(dqp->q_logitem.qli_item.li_flags & XFS_LI_IN_AIL)); | |
194 | ||
195 | xfs_dqfunlock(dqp); | |
196 | xfs_dqunlock(dqp); | |
197 | ||
329e0875 | 198 | radix_tree_delete(xfs_dquot_tree(qi, dqp->q_core.d_flags), |
b84a3a96 CH |
199 | be32_to_cpu(dqp->q_core.d_id)); |
200 | qi->qi_dquots--; | |
201 | ||
202 | /* | |
203 | * We move dquots to the freelist as soon as their reference count | |
204 | * hits zero, so it really should be on the freelist here. | |
205 | */ | |
206 | mutex_lock(&qi->qi_lru_lock); | |
207 | ASSERT(!list_empty(&dqp->q_lru)); | |
208 | list_del_init(&dqp->q_lru); | |
209 | qi->qi_lru_count--; | |
210 | XFS_STATS_DEC(xs_qm_dquot_unused); | |
211 | mutex_unlock(&qi->qi_lru_lock); | |
212 | ||
213 | xfs_qm_dqdestroy(dqp); | |
214 | ||
215 | if (gdqp) | |
216 | xfs_qm_dqput(gdqp); | |
92f8ff73 CS |
217 | if (pdqp) |
218 | xfs_qm_dqput(pdqp); | |
b84a3a96 CH |
219 | return 0; |
220 | } | |
221 | ||
222 | /* | |
223 | * Purge the dquot cache. | |
224 | */ | |
225 | void | |
226 | xfs_qm_dqpurge_all( | |
227 | struct xfs_mount *mp, | |
228 | uint flags) | |
229 | { | |
230 | if (flags & XFS_QMOPT_UQUOTA) | |
43ff2122 | 231 | xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_dqpurge, NULL); |
b84a3a96 | 232 | if (flags & XFS_QMOPT_GQUOTA) |
43ff2122 | 233 | xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_dqpurge, NULL); |
b84a3a96 | 234 | if (flags & XFS_QMOPT_PQUOTA) |
43ff2122 | 235 | xfs_qm_dquot_walk(mp, XFS_DQ_PROJ, xfs_qm_dqpurge, NULL); |
b84a3a96 CH |
236 | } |
237 | ||
1da177e4 LT |
238 | /* |
239 | * Just destroy the quotainfo structure. | |
240 | */ | |
241 | void | |
7d095257 CH |
242 | xfs_qm_unmount( |
243 | struct xfs_mount *mp) | |
1da177e4 | 244 | { |
7d095257 | 245 | if (mp->m_quotainfo) { |
8112e9dc | 246 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 | 247 | xfs_qm_destroy_quotainfo(mp); |
7d095257 | 248 | } |
1da177e4 LT |
249 | } |
250 | ||
251 | ||
252 | /* | |
253 | * This is called from xfs_mountfs to start quotas and initialize all | |
254 | * necessary data structures like quotainfo. This is also responsible for | |
255 | * running a quotacheck as necessary. We are guaranteed that the superblock | |
256 | * is consistently read in at this point. | |
53aa7915 DC |
257 | * |
258 | * If we fail here, the mount will continue with quota turned off. We don't | |
259 | * need to inidicate success or failure at all. | |
1da177e4 | 260 | */ |
53aa7915 | 261 | void |
1da177e4 | 262 | xfs_qm_mount_quotas( |
4249023a | 263 | xfs_mount_t *mp) |
1da177e4 | 264 | { |
1da177e4 LT |
265 | int error = 0; |
266 | uint sbf; | |
267 | ||
1da177e4 LT |
268 | /* |
269 | * If quotas on realtime volumes is not supported, we disable | |
270 | * quotas immediately. | |
271 | */ | |
272 | if (mp->m_sb.sb_rextents) { | |
0b932ccc | 273 | xfs_notice(mp, "Cannot turn on quotas for realtime filesystem"); |
1da177e4 LT |
274 | mp->m_qflags = 0; |
275 | goto write_changes; | |
276 | } | |
277 | ||
1da177e4 | 278 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
155ffd07 | 279 | |
1da177e4 LT |
280 | /* |
281 | * Allocate the quotainfo structure inside the mount struct, and | |
282 | * create quotainode(s), and change/rev superblock if necessary. | |
283 | */ | |
53aa7915 DC |
284 | error = xfs_qm_init_quotainfo(mp); |
285 | if (error) { | |
1da177e4 LT |
286 | /* |
287 | * We must turn off quotas. | |
288 | */ | |
289 | ASSERT(mp->m_quotainfo == NULL); | |
290 | mp->m_qflags = 0; | |
291 | goto write_changes; | |
292 | } | |
293 | /* | |
294 | * If any of the quotas are not consistent, do a quotacheck. | |
295 | */ | |
4249023a | 296 | if (XFS_QM_NEED_QUOTACHECK(mp)) { |
53aa7915 DC |
297 | error = xfs_qm_quotacheck(mp); |
298 | if (error) { | |
299 | /* Quotacheck failed and disabled quotas. */ | |
300 | return; | |
1da177e4 | 301 | } |
1da177e4 | 302 | } |
646d5bda DD |
303 | /* |
304 | * If one type of quotas is off, then it will lose its | |
305 | * quotachecked status, since we won't be doing accounting for | |
306 | * that type anymore. | |
307 | */ | |
53aa7915 | 308 | if (!XFS_IS_UQUOTA_ON(mp)) |
646d5bda | 309 | mp->m_qflags &= ~XFS_UQUOTA_CHKD; |
83e782e1 CS |
310 | if (!XFS_IS_GQUOTA_ON(mp)) |
311 | mp->m_qflags &= ~XFS_GQUOTA_CHKD; | |
312 | if (!XFS_IS_PQUOTA_ON(mp)) | |
313 | mp->m_qflags &= ~XFS_PQUOTA_CHKD; | |
155ffd07 | 314 | |
1da177e4 LT |
315 | write_changes: |
316 | /* | |
3685c2a1 | 317 | * We actually don't have to acquire the m_sb_lock at all. |
1da177e4 LT |
318 | * This can only be called from mount, and that's single threaded. XXX |
319 | */ | |
3685c2a1 | 320 | spin_lock(&mp->m_sb_lock); |
1da177e4 LT |
321 | sbf = mp->m_sb.sb_qflags; |
322 | mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL; | |
3685c2a1 | 323 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
324 | |
325 | if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) { | |
326 | if (xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS)) { | |
327 | /* | |
328 | * We could only have been turning quotas off. | |
329 | * We aren't in very good shape actually because | |
330 | * the incore structures are convinced that quotas are | |
331 | * off, but the on disk superblock doesn't know that ! | |
332 | */ | |
333 | ASSERT(!(XFS_IS_QUOTA_RUNNING(mp))); | |
53487786 DC |
334 | xfs_alert(mp, "%s: Superblock update failed!", |
335 | __func__); | |
1da177e4 LT |
336 | } |
337 | } | |
338 | ||
339 | if (error) { | |
53487786 | 340 | xfs_warn(mp, "Failed to initialize disk quotas."); |
7d095257 | 341 | return; |
1da177e4 | 342 | } |
1da177e4 LT |
343 | } |
344 | ||
345 | /* | |
346 | * Called from the vfsops layer. | |
347 | */ | |
e57481dc | 348 | void |
1da177e4 LT |
349 | xfs_qm_unmount_quotas( |
350 | xfs_mount_t *mp) | |
351 | { | |
1da177e4 LT |
352 | /* |
353 | * Release the dquots that root inode, et al might be holding, | |
354 | * before we flush quotas and blow away the quotainfo structure. | |
355 | */ | |
356 | ASSERT(mp->m_rootip); | |
357 | xfs_qm_dqdetach(mp->m_rootip); | |
358 | if (mp->m_rbmip) | |
359 | xfs_qm_dqdetach(mp->m_rbmip); | |
360 | if (mp->m_rsumip) | |
361 | xfs_qm_dqdetach(mp->m_rsumip); | |
362 | ||
363 | /* | |
e57481dc | 364 | * Release the quota inodes. |
1da177e4 | 365 | */ |
1da177e4 | 366 | if (mp->m_quotainfo) { |
e57481dc CH |
367 | if (mp->m_quotainfo->qi_uquotaip) { |
368 | IRELE(mp->m_quotainfo->qi_uquotaip); | |
369 | mp->m_quotainfo->qi_uquotaip = NULL; | |
1da177e4 | 370 | } |
e57481dc CH |
371 | if (mp->m_quotainfo->qi_gquotaip) { |
372 | IRELE(mp->m_quotainfo->qi_gquotaip); | |
373 | mp->m_quotainfo->qi_gquotaip = NULL; | |
1da177e4 | 374 | } |
92f8ff73 CS |
375 | if (mp->m_quotainfo->qi_pquotaip) { |
376 | IRELE(mp->m_quotainfo->qi_pquotaip); | |
377 | mp->m_quotainfo->qi_pquotaip = NULL; | |
378 | } | |
1da177e4 | 379 | } |
1da177e4 LT |
380 | } |
381 | ||
1da177e4 LT |
382 | STATIC int |
383 | xfs_qm_dqattach_one( | |
384 | xfs_inode_t *ip, | |
385 | xfs_dqid_t id, | |
386 | uint type, | |
387 | uint doalloc, | |
1da177e4 LT |
388 | xfs_dquot_t *udqhint, /* hint */ |
389 | xfs_dquot_t **IO_idqpp) | |
390 | { | |
391 | xfs_dquot_t *dqp; | |
392 | int error; | |
393 | ||
579aa9ca | 394 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 395 | error = 0; |
8e9b6e7f | 396 | |
1da177e4 LT |
397 | /* |
398 | * See if we already have it in the inode itself. IO_idqpp is | |
399 | * &i_udquot or &i_gdquot. This made the code look weird, but | |
400 | * made the logic a lot simpler. | |
401 | */ | |
8e9b6e7f CH |
402 | dqp = *IO_idqpp; |
403 | if (dqp) { | |
0b1b213f | 404 | trace_xfs_dqattach_found(dqp); |
8e9b6e7f | 405 | return 0; |
1da177e4 LT |
406 | } |
407 | ||
408 | /* | |
409 | * udqhint is the i_udquot field in inode, and is non-NULL only | |
c8ad20ff | 410 | * when the type arg is group/project. Its purpose is to save a |
1da177e4 LT |
411 | * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside |
412 | * the user dquot. | |
413 | */ | |
8e9b6e7f CH |
414 | if (udqhint) { |
415 | ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ); | |
1da177e4 LT |
416 | xfs_dqlock(udqhint); |
417 | ||
8e9b6e7f CH |
418 | /* |
419 | * No need to take dqlock to look at the id. | |
420 | * | |
421 | * The ID can't change until it gets reclaimed, and it won't | |
422 | * be reclaimed as long as we have a ref from inode and we | |
423 | * hold the ilock. | |
424 | */ | |
92f8ff73 CS |
425 | if (type == XFS_DQ_GROUP) |
426 | dqp = udqhint->q_gdquot; | |
427 | else | |
428 | dqp = udqhint->q_pdquot; | |
8e9b6e7f | 429 | if (dqp && be32_to_cpu(dqp->q_core.d_id) == id) { |
8e9b6e7f | 430 | ASSERT(*IO_idqpp == NULL); |
8e9b6e7f | 431 | |
78e55892 | 432 | *IO_idqpp = xfs_qm_dqhold(dqp); |
1da177e4 | 433 | xfs_dqunlock(udqhint); |
8e9b6e7f | 434 | return 0; |
1da177e4 | 435 | } |
8e9b6e7f CH |
436 | |
437 | /* | |
438 | * We can't hold a dquot lock when we call the dqget code. | |
439 | * We'll deadlock in no time, because of (not conforming to) | |
440 | * lock ordering - the inodelock comes before any dquot lock, | |
441 | * and we may drop and reacquire the ilock in xfs_qm_dqget(). | |
442 | */ | |
1da177e4 | 443 | xfs_dqunlock(udqhint); |
8e9b6e7f CH |
444 | } |
445 | ||
1da177e4 LT |
446 | /* |
447 | * Find the dquot from somewhere. This bumps the | |
448 | * reference count of dquot and returns it locked. | |
449 | * This can return ENOENT if dquot didn't exist on | |
450 | * disk and we didn't ask it to allocate; | |
451 | * ESRCH if quotas got turned off suddenly. | |
452 | */ | |
db3e74b5 MH |
453 | error = xfs_qm_dqget(ip->i_mount, ip, id, type, |
454 | doalloc | XFS_QMOPT_DOWARN, &dqp); | |
8e9b6e7f CH |
455 | if (error) |
456 | return error; | |
1da177e4 | 457 | |
0b1b213f | 458 | trace_xfs_dqattach_get(dqp); |
8e9b6e7f | 459 | |
1da177e4 LT |
460 | /* |
461 | * dqget may have dropped and re-acquired the ilock, but it guarantees | |
462 | * that the dquot returned is the one that should go in the inode. | |
463 | */ | |
464 | *IO_idqpp = dqp; | |
8e9b6e7f CH |
465 | xfs_dqunlock(dqp); |
466 | return 0; | |
1da177e4 LT |
467 | } |
468 | ||
469 | ||
470 | /* | |
92f8ff73 CS |
471 | * Given a udquot and group/project type, attach the group/project |
472 | * dquot pointer to the udquot as a hint for future lookups. | |
1da177e4 LT |
473 | */ |
474 | STATIC void | |
92f8ff73 CS |
475 | xfs_qm_dqattach_hint( |
476 | struct xfs_inode *ip, | |
477 | int type) | |
1da177e4 | 478 | { |
92f8ff73 CS |
479 | struct xfs_dquot **dqhintp; |
480 | struct xfs_dquot *dqp; | |
481 | struct xfs_dquot *udq = ip->i_udquot; | |
482 | ||
483 | ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ); | |
1da177e4 | 484 | |
8e9b6e7f | 485 | xfs_dqlock(udq); |
1da177e4 | 486 | |
92f8ff73 CS |
487 | if (type == XFS_DQ_GROUP) { |
488 | dqp = ip->i_gdquot; | |
489 | dqhintp = &udq->q_gdquot; | |
490 | } else { | |
491 | dqp = ip->i_pdquot; | |
492 | dqhintp = &udq->q_pdquot; | |
493 | } | |
494 | ||
495 | if (*dqhintp) { | |
496 | struct xfs_dquot *tmp; | |
497 | ||
498 | if (*dqhintp == dqp) | |
ab680bb7 | 499 | goto done; |
1da177e4 | 500 | |
92f8ff73 CS |
501 | tmp = *dqhintp; |
502 | *dqhintp = NULL; | |
1da177e4 | 503 | xfs_qm_dqrele(tmp); |
1da177e4 | 504 | } |
8e9b6e7f | 505 | |
92f8ff73 | 506 | *dqhintp = xfs_qm_dqhold(dqp); |
ab680bb7 | 507 | done: |
8e9b6e7f | 508 | xfs_dqunlock(udq); |
1da177e4 LT |
509 | } |
510 | ||
b4d05e30 CH |
511 | static bool |
512 | xfs_qm_need_dqattach( | |
513 | struct xfs_inode *ip) | |
514 | { | |
515 | struct xfs_mount *mp = ip->i_mount; | |
516 | ||
517 | if (!XFS_IS_QUOTA_RUNNING(mp)) | |
518 | return false; | |
519 | if (!XFS_IS_QUOTA_ON(mp)) | |
520 | return false; | |
521 | if (!XFS_NOT_DQATTACHED(mp, ip)) | |
522 | return false; | |
9cad19d2 | 523 | if (xfs_is_quota_inode(&mp->m_sb, ip->i_ino)) |
b4d05e30 CH |
524 | return false; |
525 | return true; | |
526 | } | |
1da177e4 LT |
527 | |
528 | /* | |
c8ad20ff NS |
529 | * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON |
530 | * into account. | |
1da177e4 | 531 | * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed. |
1da177e4 LT |
532 | * Inode may get unlocked and relocked in here, and the caller must deal with |
533 | * the consequences. | |
534 | */ | |
535 | int | |
7d095257 | 536 | xfs_qm_dqattach_locked( |
1da177e4 LT |
537 | xfs_inode_t *ip, |
538 | uint flags) | |
539 | { | |
540 | xfs_mount_t *mp = ip->i_mount; | |
541 | uint nquotas = 0; | |
542 | int error = 0; | |
543 | ||
b4d05e30 | 544 | if (!xfs_qm_need_dqattach(ip)) |
014c2544 | 545 | return 0; |
1da177e4 | 546 | |
7d095257 | 547 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
548 | |
549 | if (XFS_IS_UQUOTA_ON(mp)) { | |
550 | error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER, | |
551 | flags & XFS_QMOPT_DQALLOC, | |
1da177e4 LT |
552 | NULL, &ip->i_udquot); |
553 | if (error) | |
554 | goto done; | |
555 | nquotas++; | |
556 | } | |
579aa9ca CH |
557 | |
558 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); | |
92f8ff73 CS |
559 | if (XFS_IS_GQUOTA_ON(mp)) { |
560 | error = xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, | |
1da177e4 | 561 | flags & XFS_QMOPT_DQALLOC, |
1da177e4 LT |
562 | ip->i_udquot, &ip->i_gdquot); |
563 | /* | |
564 | * Don't worry about the udquot that we may have | |
565 | * attached above. It'll get detached, if not already. | |
566 | */ | |
567 | if (error) | |
568 | goto done; | |
569 | nquotas++; | |
570 | } | |
571 | ||
92f8ff73 CS |
572 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
573 | if (XFS_IS_PQUOTA_ON(mp)) { | |
574 | error = xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ, | |
575 | flags & XFS_QMOPT_DQALLOC, | |
576 | ip->i_udquot, &ip->i_pdquot); | |
577 | /* | |
578 | * Don't worry about the udquot that we may have | |
579 | * attached above. It'll get detached, if not already. | |
580 | */ | |
581 | if (error) | |
582 | goto done; | |
583 | nquotas++; | |
584 | } | |
585 | ||
1da177e4 | 586 | /* |
92f8ff73 | 587 | * Attach this group/project quota to the user quota as a hint. |
1da177e4 LT |
588 | * This WON'T, in general, result in a thrash. |
589 | */ | |
92f8ff73 | 590 | if (nquotas > 1 && ip->i_udquot) { |
579aa9ca | 591 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
92f8ff73 CS |
592 | ASSERT(ip->i_gdquot || !XFS_IS_GQUOTA_ON(mp)); |
593 | ASSERT(ip->i_pdquot || !XFS_IS_PQUOTA_ON(mp)); | |
1da177e4 LT |
594 | |
595 | /* | |
ab680bb7 CH |
596 | * We do not have i_udquot locked at this point, but this check |
597 | * is OK since we don't depend on the i_gdquot to be accurate | |
598 | * 100% all the time. It is just a hint, and this will | |
599 | * succeed in general. | |
1da177e4 | 600 | */ |
ab680bb7 | 601 | if (ip->i_udquot->q_gdquot != ip->i_gdquot) |
92f8ff73 CS |
602 | xfs_qm_dqattach_hint(ip, XFS_DQ_GROUP); |
603 | ||
604 | if (ip->i_udquot->q_pdquot != ip->i_pdquot) | |
605 | xfs_qm_dqattach_hint(ip, XFS_DQ_PROJ); | |
1da177e4 LT |
606 | } |
607 | ||
7d095257 | 608 | done: |
ea15ab3c CH |
609 | #ifdef DEBUG |
610 | if (!error) { | |
1da177e4 LT |
611 | if (XFS_IS_UQUOTA_ON(mp)) |
612 | ASSERT(ip->i_udquot); | |
92f8ff73 | 613 | if (XFS_IS_GQUOTA_ON(mp)) |
1da177e4 | 614 | ASSERT(ip->i_gdquot); |
92f8ff73 CS |
615 | if (XFS_IS_PQUOTA_ON(mp)) |
616 | ASSERT(ip->i_pdquot); | |
1da177e4 | 617 | } |
7d095257 | 618 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 619 | #endif |
7d095257 CH |
620 | return error; |
621 | } | |
1da177e4 | 622 | |
7d095257 CH |
623 | int |
624 | xfs_qm_dqattach( | |
625 | struct xfs_inode *ip, | |
626 | uint flags) | |
627 | { | |
628 | int error; | |
629 | ||
b4d05e30 CH |
630 | if (!xfs_qm_need_dqattach(ip)) |
631 | return 0; | |
632 | ||
7d095257 CH |
633 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
634 | error = xfs_qm_dqattach_locked(ip, flags); | |
635 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1da177e4 | 636 | |
014c2544 | 637 | return error; |
1da177e4 LT |
638 | } |
639 | ||
640 | /* | |
641 | * Release dquots (and their references) if any. | |
642 | * The inode should be locked EXCL except when this's called by | |
643 | * xfs_ireclaim. | |
644 | */ | |
645 | void | |
646 | xfs_qm_dqdetach( | |
647 | xfs_inode_t *ip) | |
648 | { | |
92f8ff73 | 649 | if (!(ip->i_udquot || ip->i_gdquot || ip->i_pdquot)) |
1da177e4 LT |
650 | return; |
651 | ||
0b1b213f CH |
652 | trace_xfs_dquot_dqdetach(ip); |
653 | ||
9cad19d2 | 654 | ASSERT(!xfs_is_quota_inode(&ip->i_mount->m_sb, ip->i_ino)); |
1da177e4 LT |
655 | if (ip->i_udquot) { |
656 | xfs_qm_dqrele(ip->i_udquot); | |
657 | ip->i_udquot = NULL; | |
658 | } | |
659 | if (ip->i_gdquot) { | |
660 | xfs_qm_dqrele(ip->i_gdquot); | |
661 | ip->i_gdquot = NULL; | |
662 | } | |
92f8ff73 CS |
663 | if (ip->i_pdquot) { |
664 | xfs_qm_dqrele(ip->i_pdquot); | |
665 | ip->i_pdquot = NULL; | |
666 | } | |
1da177e4 LT |
667 | } |
668 | ||
3fe58f30 CH |
669 | int |
670 | xfs_qm_calc_dquots_per_chunk( | |
671 | struct xfs_mount *mp, | |
672 | unsigned int nbblks) /* basic block units */ | |
673 | { | |
674 | unsigned int ndquots; | |
675 | ||
676 | ASSERT(nbblks > 0); | |
677 | ndquots = BBTOB(nbblks); | |
678 | do_div(ndquots, sizeof(xfs_dqblk_t)); | |
679 | ||
680 | return ndquots; | |
681 | } | |
682 | ||
1da177e4 LT |
683 | /* |
684 | * This initializes all the quota information that's kept in the | |
685 | * mount structure | |
686 | */ | |
ba0f32d4 | 687 | STATIC int |
1da177e4 LT |
688 | xfs_qm_init_quotainfo( |
689 | xfs_mount_t *mp) | |
690 | { | |
691 | xfs_quotainfo_t *qinf; | |
692 | int error; | |
693 | xfs_dquot_t *dqp; | |
694 | ||
695 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
696 | ||
1da177e4 LT |
697 | qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP); |
698 | ||
699 | /* | |
700 | * See if quotainodes are setup, and if not, allocate them, | |
701 | * and change the superblock accordingly. | |
702 | */ | |
703 | if ((error = xfs_qm_init_quotainos(mp))) { | |
f0e2d93c | 704 | kmem_free(qinf); |
1da177e4 | 705 | mp->m_quotainfo = NULL; |
014c2544 | 706 | return error; |
1da177e4 LT |
707 | } |
708 | ||
9f920f11 CH |
709 | INIT_RADIX_TREE(&qinf->qi_uquota_tree, GFP_NOFS); |
710 | INIT_RADIX_TREE(&qinf->qi_gquota_tree, GFP_NOFS); | |
92f8ff73 | 711 | INIT_RADIX_TREE(&qinf->qi_pquota_tree, GFP_NOFS); |
9f920f11 CH |
712 | mutex_init(&qinf->qi_tree_lock); |
713 | ||
f8739c3c CH |
714 | INIT_LIST_HEAD(&qinf->qi_lru_list); |
715 | qinf->qi_lru_count = 0; | |
716 | mutex_init(&qinf->qi_lru_lock); | |
717 | ||
1da177e4 | 718 | /* mutex used to serialize quotaoffs */ |
794ee1ba | 719 | mutex_init(&qinf->qi_quotaofflock); |
1da177e4 LT |
720 | |
721 | /* Precalc some constants */ | |
722 | qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
3fe58f30 CH |
723 | qinf->qi_dqperchunk = xfs_qm_calc_dquots_per_chunk(mp, |
724 | qinf->qi_dqchunklen); | |
1da177e4 LT |
725 | |
726 | mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); | |
727 | ||
728 | /* | |
729 | * We try to get the limits from the superuser's limits fields. | |
730 | * This is quite hacky, but it is standard quota practice. | |
7ae44407 | 731 | * |
1da177e4 LT |
732 | * We look at the USR dquot with id == 0 first, but if user quotas |
733 | * are not enabled we goto the GRP dquot with id == 0. | |
734 | * We don't really care to keep separate default limits for user | |
735 | * and group quotas, at least not at this point. | |
7ae44407 CH |
736 | * |
737 | * Since we may not have done a quotacheck by this point, just read | |
738 | * the dquot without attaching it to any hashtables or lists. | |
1da177e4 | 739 | */ |
7ae44407 CH |
740 | error = xfs_qm_dqread(mp, 0, |
741 | XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : | |
742 | (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP : | |
743 | XFS_DQ_PROJ), | |
744 | XFS_QMOPT_DOWARN, &dqp); | |
745 | if (!error) { | |
1da177e4 LT |
746 | xfs_disk_dquot_t *ddqp = &dqp->q_core; |
747 | ||
748 | /* | |
749 | * The warnings and timers set the grace period given to | |
750 | * a user or group before he or she can not perform any | |
751 | * more writing. If it is zero, a default is used. | |
752 | */ | |
1149d96a CH |
753 | qinf->qi_btimelimit = ddqp->d_btimer ? |
754 | be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT; | |
755 | qinf->qi_itimelimit = ddqp->d_itimer ? | |
756 | be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT; | |
757 | qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ? | |
758 | be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT; | |
759 | qinf->qi_bwarnlimit = ddqp->d_bwarns ? | |
760 | be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT; | |
761 | qinf->qi_iwarnlimit = ddqp->d_iwarns ? | |
762 | be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT; | |
763 | qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ? | |
764 | be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT; | |
765 | qinf->qi_bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit); | |
766 | qinf->qi_bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit); | |
767 | qinf->qi_ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit); | |
768 | qinf->qi_isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit); | |
769 | qinf->qi_rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit); | |
770 | qinf->qi_rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit); | |
1da177e4 | 771 | |
1da177e4 LT |
772 | xfs_qm_dqdestroy(dqp); |
773 | } else { | |
774 | qinf->qi_btimelimit = XFS_QM_BTIMELIMIT; | |
775 | qinf->qi_itimelimit = XFS_QM_ITIMELIMIT; | |
776 | qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT; | |
777 | qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT; | |
778 | qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT; | |
06d10dd9 | 779 | qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT; |
1da177e4 LT |
780 | } |
781 | ||
f8739c3c CH |
782 | qinf->qi_shrinker.shrink = xfs_qm_shake; |
783 | qinf->qi_shrinker.seeks = DEFAULT_SEEKS; | |
784 | register_shrinker(&qinf->qi_shrinker); | |
014c2544 | 785 | return 0; |
1da177e4 LT |
786 | } |
787 | ||
788 | ||
789 | /* | |
790 | * Gets called when unmounting a filesystem or when all quotas get | |
791 | * turned off. | |
792 | * This purges the quota inodes, destroys locks and frees itself. | |
793 | */ | |
794 | void | |
795 | xfs_qm_destroy_quotainfo( | |
796 | xfs_mount_t *mp) | |
797 | { | |
798 | xfs_quotainfo_t *qi; | |
799 | ||
800 | qi = mp->m_quotainfo; | |
801 | ASSERT(qi != NULL); | |
1da177e4 | 802 | |
f8739c3c CH |
803 | unregister_shrinker(&qi->qi_shrinker); |
804 | ||
1da177e4 | 805 | if (qi->qi_uquotaip) { |
26cc0021 | 806 | IRELE(qi->qi_uquotaip); |
1da177e4 LT |
807 | qi->qi_uquotaip = NULL; /* paranoia */ |
808 | } | |
809 | if (qi->qi_gquotaip) { | |
26cc0021 | 810 | IRELE(qi->qi_gquotaip); |
1da177e4 LT |
811 | qi->qi_gquotaip = NULL; |
812 | } | |
92f8ff73 CS |
813 | if (qi->qi_pquotaip) { |
814 | IRELE(qi->qi_pquotaip); | |
815 | qi->qi_pquotaip = NULL; | |
816 | } | |
1da177e4 | 817 | mutex_destroy(&qi->qi_quotaofflock); |
f0e2d93c | 818 | kmem_free(qi); |
1da177e4 LT |
819 | mp->m_quotainfo = NULL; |
820 | } | |
821 | ||
1da177e4 LT |
822 | /* |
823 | * Create an inode and return with a reference already taken, but unlocked | |
824 | * This is how we create quota inodes | |
825 | */ | |
826 | STATIC int | |
827 | xfs_qm_qino_alloc( | |
828 | xfs_mount_t *mp, | |
829 | xfs_inode_t **ip, | |
830 | __int64_t sbfields, | |
831 | uint flags) | |
832 | { | |
833 | xfs_trans_t *tp; | |
834 | int error; | |
1da177e4 LT |
835 | int committed; |
836 | ||
d892d586 CS |
837 | *ip = NULL; |
838 | /* | |
839 | * With superblock that doesn't have separate pquotino, we | |
840 | * share an inode between gquota and pquota. If the on-disk | |
841 | * superblock has GQUOTA and the filesystem is now mounted | |
842 | * with PQUOTA, just use sb_gquotino for sb_pquotino and | |
843 | * vice-versa. | |
844 | */ | |
845 | if (!xfs_sb_version_has_pquotino(&mp->m_sb) && | |
846 | (flags & (XFS_QMOPT_PQUOTA|XFS_QMOPT_GQUOTA))) { | |
847 | xfs_ino_t ino = NULLFSINO; | |
848 | ||
849 | if ((flags & XFS_QMOPT_PQUOTA) && | |
850 | (mp->m_sb.sb_gquotino != NULLFSINO)) { | |
851 | ino = mp->m_sb.sb_gquotino; | |
852 | ASSERT(mp->m_sb.sb_pquotino == NULLFSINO); | |
853 | } else if ((flags & XFS_QMOPT_GQUOTA) && | |
854 | (mp->m_sb.sb_pquotino != NULLFSINO)) { | |
855 | ino = mp->m_sb.sb_pquotino; | |
856 | ASSERT(mp->m_sb.sb_gquotino == NULLFSINO); | |
857 | } | |
858 | if (ino != NULLFSINO) { | |
859 | error = xfs_iget(mp, NULL, ino, 0, 0, ip); | |
860 | if (error) | |
861 | return error; | |
862 | mp->m_sb.sb_gquotino = NULLFSINO; | |
863 | mp->m_sb.sb_pquotino = NULLFSINO; | |
864 | } | |
865 | } | |
866 | ||
061f7209 | 867 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE); |
3d3c8b52 JL |
868 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_create, |
869 | XFS_QM_QINOCREATE_SPACE_RES(mp), 0); | |
870 | if (error) { | |
1da177e4 | 871 | xfs_trans_cancel(tp, 0); |
014c2544 | 872 | return error; |
1da177e4 | 873 | } |
1da177e4 | 874 | |
d892d586 CS |
875 | if (!*ip) { |
876 | error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip, | |
877 | &committed); | |
878 | if (error) { | |
879 | xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | | |
880 | XFS_TRANS_ABORT); | |
881 | return error; | |
882 | } | |
1da177e4 LT |
883 | } |
884 | ||
1da177e4 LT |
885 | /* |
886 | * Make the changes in the superblock, and log those too. | |
887 | * sbfields arg may contain fields other than *QUOTINO; | |
888 | * VERSIONNUM for example. | |
889 | */ | |
3685c2a1 | 890 | spin_lock(&mp->m_sb_lock); |
1da177e4 | 891 | if (flags & XFS_QMOPT_SBVERSION) { |
62118709 | 892 | ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); |
1da177e4 | 893 | ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | |
d892d586 CS |
894 | XFS_SB_GQUOTINO | XFS_SB_PQUOTINO | XFS_SB_QFLAGS)) == |
895 | (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
896 | XFS_SB_GQUOTINO | XFS_SB_PQUOTINO | | |
897 | XFS_SB_QFLAGS)); | |
1da177e4 | 898 | |
62118709 | 899 | xfs_sb_version_addquota(&mp->m_sb); |
1da177e4 LT |
900 | mp->m_sb.sb_uquotino = NULLFSINO; |
901 | mp->m_sb.sb_gquotino = NULLFSINO; | |
d892d586 | 902 | mp->m_sb.sb_pquotino = NULLFSINO; |
1da177e4 | 903 | |
d892d586 CS |
904 | /* qflags will get updated fully _after_ quotacheck */ |
905 | mp->m_sb.sb_qflags = mp->m_qflags & XFS_ALL_QUOTA_ACCT; | |
1da177e4 LT |
906 | } |
907 | if (flags & XFS_QMOPT_UQUOTA) | |
908 | mp->m_sb.sb_uquotino = (*ip)->i_ino; | |
d892d586 | 909 | else if (flags & XFS_QMOPT_GQUOTA) |
1da177e4 | 910 | mp->m_sb.sb_gquotino = (*ip)->i_ino; |
d892d586 CS |
911 | else |
912 | mp->m_sb.sb_pquotino = (*ip)->i_ino; | |
3685c2a1 | 913 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
914 | xfs_mod_sb(tp, sbfields); |
915 | ||
1c72bf90 | 916 | if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) { |
53487786 | 917 | xfs_alert(mp, "%s failed (error %d)!", __func__, error); |
014c2544 | 918 | return error; |
1da177e4 | 919 | } |
014c2544 | 920 | return 0; |
1da177e4 LT |
921 | } |
922 | ||
923 | ||
5b139738 | 924 | STATIC void |
1da177e4 LT |
925 | xfs_qm_reset_dqcounts( |
926 | xfs_mount_t *mp, | |
927 | xfs_buf_t *bp, | |
928 | xfs_dqid_t id, | |
929 | uint type) | |
930 | { | |
6fcdc59d | 931 | struct xfs_dqblk *dqb; |
1da177e4 LT |
932 | int j; |
933 | ||
0b1b213f CH |
934 | trace_xfs_reset_dqcounts(bp, _RET_IP_); |
935 | ||
1da177e4 LT |
936 | /* |
937 | * Reset all counters and timers. They'll be | |
938 | * started afresh by xfs_qm_quotacheck. | |
939 | */ | |
940 | #ifdef DEBUG | |
941 | j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
942 | do_div(j, sizeof(xfs_dqblk_t)); | |
8a7b8a89 | 943 | ASSERT(mp->m_quotainfo->qi_dqperchunk == j); |
1da177e4 | 944 | #endif |
6fcdc59d | 945 | dqb = bp->b_addr; |
8a7b8a89 | 946 | for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { |
6fcdc59d DC |
947 | struct xfs_disk_dquot *ddq; |
948 | ||
949 | ddq = (struct xfs_disk_dquot *)&dqb[j]; | |
950 | ||
1da177e4 LT |
951 | /* |
952 | * Do a sanity check, and if needed, repair the dqblk. Don't | |
953 | * output any warnings because it's perfectly possible to | |
c41564b5 | 954 | * find uninitialised dquot blks. See comment in xfs_qm_dqcheck. |
1da177e4 | 955 | */ |
a0fa2b67 | 956 | (void) xfs_qm_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR, |
1da177e4 | 957 | "xfs_quotacheck"); |
1149d96a CH |
958 | ddq->d_bcount = 0; |
959 | ddq->d_icount = 0; | |
960 | ddq->d_rtbcount = 0; | |
961 | ddq->d_btimer = 0; | |
962 | ddq->d_itimer = 0; | |
963 | ddq->d_rtbtimer = 0; | |
964 | ddq->d_bwarns = 0; | |
965 | ddq->d_iwarns = 0; | |
966 | ddq->d_rtbwarns = 0; | |
6fcdc59d DC |
967 | |
968 | if (xfs_sb_version_hascrc(&mp->m_sb)) { | |
969 | xfs_update_cksum((char *)&dqb[j], | |
970 | sizeof(struct xfs_dqblk), | |
971 | XFS_DQUOT_CRC_OFF); | |
972 | } | |
1da177e4 | 973 | } |
1da177e4 LT |
974 | } |
975 | ||
976 | STATIC int | |
977 | xfs_qm_dqiter_bufs( | |
43ff2122 CH |
978 | struct xfs_mount *mp, |
979 | xfs_dqid_t firstid, | |
980 | xfs_fsblock_t bno, | |
981 | xfs_filblks_t blkcnt, | |
982 | uint flags, | |
983 | struct list_head *buffer_list) | |
1da177e4 | 984 | { |
43ff2122 CH |
985 | struct xfs_buf *bp; |
986 | int error; | |
987 | int type; | |
1da177e4 LT |
988 | |
989 | ASSERT(blkcnt > 0); | |
c8ad20ff NS |
990 | type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER : |
991 | (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP); | |
1da177e4 LT |
992 | error = 0; |
993 | ||
994 | /* | |
995 | * Blkcnt arg can be a very big number, and might even be | |
996 | * larger than the log itself. So, we have to break it up into | |
997 | * manageable-sized transactions. | |
998 | * Note that we don't start a permanent transaction here; we might | |
999 | * not be able to get a log reservation for the whole thing up front, | |
1000 | * and we don't really care to either, because we just discard | |
1001 | * everything if we were to crash in the middle of this loop. | |
1002 | */ | |
1003 | while (blkcnt--) { | |
1004 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1005 | XFS_FSB_TO_DADDR(mp, bno), | |
c6319198 | 1006 | mp->m_quotainfo->qi_dqchunklen, 0, &bp, |
1813dd64 | 1007 | &xfs_dquot_buf_ops); |
1da177e4 | 1008 | |
3fe58f30 | 1009 | /* |
6fcdc59d DC |
1010 | * CRC and validation errors will return a EFSCORRUPTED here. If |
1011 | * this occurs, re-read without CRC validation so that we can | |
1012 | * repair the damage via xfs_qm_reset_dqcounts(). This process | |
1013 | * will leave a trace in the log indicating corruption has | |
1014 | * been detected. | |
3fe58f30 | 1015 | */ |
6fcdc59d DC |
1016 | if (error == EFSCORRUPTED) { |
1017 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1018 | XFS_FSB_TO_DADDR(mp, bno), | |
1019 | mp->m_quotainfo->qi_dqchunklen, 0, &bp, | |
1020 | NULL); | |
1021 | } | |
1022 | ||
1023 | if (error) | |
1024 | break; | |
1025 | ||
5b139738 | 1026 | xfs_qm_reset_dqcounts(mp, bp, firstid, type); |
43ff2122 | 1027 | xfs_buf_delwri_queue(bp, buffer_list); |
61551f1e | 1028 | xfs_buf_relse(bp); |
6fcdc59d DC |
1029 | |
1030 | /* goto the next block. */ | |
1da177e4 | 1031 | bno++; |
8a7b8a89 | 1032 | firstid += mp->m_quotainfo->qi_dqperchunk; |
1da177e4 | 1033 | } |
43ff2122 | 1034 | |
014c2544 | 1035 | return error; |
1da177e4 LT |
1036 | } |
1037 | ||
1038 | /* | |
c8ad20ff | 1039 | * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a |
1da177e4 LT |
1040 | * caller supplied function for every chunk of dquots that we find. |
1041 | */ | |
1042 | STATIC int | |
1043 | xfs_qm_dqiterate( | |
43ff2122 CH |
1044 | struct xfs_mount *mp, |
1045 | struct xfs_inode *qip, | |
1046 | uint flags, | |
1047 | struct list_head *buffer_list) | |
1da177e4 | 1048 | { |
43ff2122 | 1049 | struct xfs_bmbt_irec *map; |
1da177e4 LT |
1050 | int i, nmaps; /* number of map entries */ |
1051 | int error; /* return value */ | |
1052 | xfs_fileoff_t lblkno; | |
1053 | xfs_filblks_t maxlblkcnt; | |
1054 | xfs_dqid_t firstid; | |
1055 | xfs_fsblock_t rablkno; | |
1056 | xfs_filblks_t rablkcnt; | |
1057 | ||
1058 | error = 0; | |
1059 | /* | |
c41564b5 | 1060 | * This looks racy, but we can't keep an inode lock across a |
1da177e4 LT |
1061 | * trans_reserve. But, this gets called during quotacheck, and that |
1062 | * happens only at mount time which is single threaded. | |
1063 | */ | |
1064 | if (qip->i_d.di_nblocks == 0) | |
014c2544 | 1065 | return 0; |
1da177e4 LT |
1066 | |
1067 | map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP); | |
1068 | ||
1069 | lblkno = 0; | |
32972383 | 1070 | maxlblkcnt = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes); |
1da177e4 LT |
1071 | do { |
1072 | nmaps = XFS_DQITER_MAP_SIZE; | |
1073 | /* | |
1074 | * We aren't changing the inode itself. Just changing | |
1075 | * some of its data. No new blocks are added here, and | |
1076 | * the inode is never added to the transaction. | |
1077 | */ | |
1078 | xfs_ilock(qip, XFS_ILOCK_SHARED); | |
5c8ed202 DC |
1079 | error = xfs_bmapi_read(qip, lblkno, maxlblkcnt - lblkno, |
1080 | map, &nmaps, 0); | |
1da177e4 LT |
1081 | xfs_iunlock(qip, XFS_ILOCK_SHARED); |
1082 | if (error) | |
1083 | break; | |
1084 | ||
1085 | ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); | |
1086 | for (i = 0; i < nmaps; i++) { | |
1087 | ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); | |
1088 | ASSERT(map[i].br_blockcount); | |
1089 | ||
1090 | ||
1091 | lblkno += map[i].br_blockcount; | |
1092 | ||
1093 | if (map[i].br_startblock == HOLESTARTBLOCK) | |
1094 | continue; | |
1095 | ||
1096 | firstid = (xfs_dqid_t) map[i].br_startoff * | |
8a7b8a89 | 1097 | mp->m_quotainfo->qi_dqperchunk; |
1da177e4 LT |
1098 | /* |
1099 | * Do a read-ahead on the next extent. | |
1100 | */ | |
1101 | if ((i+1 < nmaps) && | |
1102 | (map[i+1].br_startblock != HOLESTARTBLOCK)) { | |
1103 | rablkcnt = map[i+1].br_blockcount; | |
1104 | rablkno = map[i+1].br_startblock; | |
1105 | while (rablkcnt--) { | |
1a1a3e97 | 1106 | xfs_buf_readahead(mp->m_ddev_targp, |
1da177e4 | 1107 | XFS_FSB_TO_DADDR(mp, rablkno), |
c3f8fc73 DC |
1108 | mp->m_quotainfo->qi_dqchunklen, |
1109 | NULL); | |
1da177e4 LT |
1110 | rablkno++; |
1111 | } | |
1112 | } | |
1113 | /* | |
1114 | * Iterate thru all the blks in the extent and | |
1115 | * reset the counters of all the dquots inside them. | |
1116 | */ | |
43ff2122 CH |
1117 | error = xfs_qm_dqiter_bufs(mp, firstid, |
1118 | map[i].br_startblock, | |
1119 | map[i].br_blockcount, | |
1120 | flags, buffer_list); | |
1121 | if (error) | |
1122 | goto out; | |
1da177e4 | 1123 | } |
1da177e4 LT |
1124 | } while (nmaps > 0); |
1125 | ||
43ff2122 | 1126 | out: |
f0e2d93c | 1127 | kmem_free(map); |
014c2544 | 1128 | return error; |
1da177e4 LT |
1129 | } |
1130 | ||
1131 | /* | |
1132 | * Called by dqusage_adjust in doing a quotacheck. | |
52fda114 CH |
1133 | * |
1134 | * Given the inode, and a dquot id this updates both the incore dqout as well | |
1135 | * as the buffer copy. This is so that once the quotacheck is done, we can | |
1136 | * just log all the buffers, as opposed to logging numerous updates to | |
1137 | * individual dquots. | |
1da177e4 | 1138 | */ |
52fda114 | 1139 | STATIC int |
1da177e4 | 1140 | xfs_qm_quotacheck_dqadjust( |
52fda114 CH |
1141 | struct xfs_inode *ip, |
1142 | xfs_dqid_t id, | |
1143 | uint type, | |
1da177e4 LT |
1144 | xfs_qcnt_t nblks, |
1145 | xfs_qcnt_t rtblks) | |
1146 | { | |
52fda114 CH |
1147 | struct xfs_mount *mp = ip->i_mount; |
1148 | struct xfs_dquot *dqp; | |
1149 | int error; | |
1150 | ||
1151 | error = xfs_qm_dqget(mp, ip, id, type, | |
1152 | XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp); | |
1153 | if (error) { | |
1154 | /* | |
1155 | * Shouldn't be able to turn off quotas here. | |
1156 | */ | |
1157 | ASSERT(error != ESRCH); | |
1158 | ASSERT(error != ENOENT); | |
1159 | return error; | |
1160 | } | |
0b1b213f CH |
1161 | |
1162 | trace_xfs_dqadjust(dqp); | |
1163 | ||
1da177e4 LT |
1164 | /* |
1165 | * Adjust the inode count and the block count to reflect this inode's | |
1166 | * resource usage. | |
1167 | */ | |
413d57c9 | 1168 | be64_add_cpu(&dqp->q_core.d_icount, 1); |
1da177e4 LT |
1169 | dqp->q_res_icount++; |
1170 | if (nblks) { | |
413d57c9 | 1171 | be64_add_cpu(&dqp->q_core.d_bcount, nblks); |
1da177e4 LT |
1172 | dqp->q_res_bcount += nblks; |
1173 | } | |
1174 | if (rtblks) { | |
413d57c9 | 1175 | be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks); |
1da177e4 LT |
1176 | dqp->q_res_rtbcount += rtblks; |
1177 | } | |
1178 | ||
1179 | /* | |
1180 | * Set default limits, adjust timers (since we changed usages) | |
191f8488 CH |
1181 | * |
1182 | * There are no timers for the default values set in the root dquot. | |
1da177e4 | 1183 | */ |
191f8488 | 1184 | if (dqp->q_core.d_id) { |
4b6eae2e | 1185 | xfs_qm_adjust_dqlimits(mp, dqp); |
52fda114 | 1186 | xfs_qm_adjust_dqtimers(mp, &dqp->q_core); |
1da177e4 LT |
1187 | } |
1188 | ||
1189 | dqp->dq_flags |= XFS_DQ_DIRTY; | |
52fda114 CH |
1190 | xfs_qm_dqput(dqp); |
1191 | return 0; | |
1da177e4 LT |
1192 | } |
1193 | ||
1194 | STATIC int | |
1195 | xfs_qm_get_rtblks( | |
1196 | xfs_inode_t *ip, | |
1197 | xfs_qcnt_t *O_rtblks) | |
1198 | { | |
1199 | xfs_filblks_t rtblks; /* total rt blks */ | |
4eea22f0 | 1200 | xfs_extnum_t idx; /* extent record index */ |
1da177e4 LT |
1201 | xfs_ifork_t *ifp; /* inode fork pointer */ |
1202 | xfs_extnum_t nextents; /* number of extent entries */ | |
1da177e4 LT |
1203 | int error; |
1204 | ||
1205 | ASSERT(XFS_IS_REALTIME_INODE(ip)); | |
1206 | ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); | |
1207 | if (!(ifp->if_flags & XFS_IFEXTENTS)) { | |
1208 | if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK))) | |
014c2544 | 1209 | return error; |
1da177e4 LT |
1210 | } |
1211 | rtblks = 0; | |
4eea22f0 | 1212 | nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); |
a6f64d4a CH |
1213 | for (idx = 0; idx < nextents; idx++) |
1214 | rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx)); | |
1da177e4 | 1215 | *O_rtblks = (xfs_qcnt_t)rtblks; |
014c2544 | 1216 | return 0; |
1da177e4 LT |
1217 | } |
1218 | ||
1219 | /* | |
1220 | * callback routine supplied to bulkstat(). Given an inumber, find its | |
1221 | * dquots and update them to account for resources taken by that inode. | |
1222 | */ | |
1223 | /* ARGSUSED */ | |
1224 | STATIC int | |
1225 | xfs_qm_dqusage_adjust( | |
1226 | xfs_mount_t *mp, /* mount point for filesystem */ | |
1227 | xfs_ino_t ino, /* inode number to get data for */ | |
1228 | void __user *buffer, /* not used */ | |
1229 | int ubsize, /* not used */ | |
1da177e4 | 1230 | int *ubused, /* not used */ |
1da177e4 LT |
1231 | int *res) /* result code value */ |
1232 | { | |
1233 | xfs_inode_t *ip; | |
52fda114 | 1234 | xfs_qcnt_t nblks, rtblks = 0; |
1da177e4 LT |
1235 | int error; |
1236 | ||
1237 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
1238 | ||
1239 | /* | |
1240 | * rootino must have its resources accounted for, not so with the quota | |
1241 | * inodes. | |
1242 | */ | |
9cad19d2 | 1243 | if (xfs_is_quota_inode(&mp->m_sb, ino)) { |
1da177e4 LT |
1244 | *res = BULKSTAT_RV_NOTHING; |
1245 | return XFS_ERROR(EINVAL); | |
1246 | } | |
1247 | ||
1248 | /* | |
1249 | * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget | |
1250 | * interface expects the inode to be exclusively locked because that's | |
1251 | * the case in all other instances. It's OK that we do this because | |
1252 | * quotacheck is done only at mount time. | |
1253 | */ | |
52fda114 CH |
1254 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_EXCL, &ip); |
1255 | if (error) { | |
1da177e4 | 1256 | *res = BULKSTAT_RV_NOTHING; |
014c2544 | 1257 | return error; |
1da177e4 LT |
1258 | } |
1259 | ||
52fda114 | 1260 | ASSERT(ip->i_delayed_blks == 0); |
1da177e4 | 1261 | |
52fda114 | 1262 | if (XFS_IS_REALTIME_INODE(ip)) { |
1da177e4 LT |
1263 | /* |
1264 | * Walk thru the extent list and count the realtime blocks. | |
1265 | */ | |
52fda114 CH |
1266 | error = xfs_qm_get_rtblks(ip, &rtblks); |
1267 | if (error) | |
1268 | goto error0; | |
1da177e4 | 1269 | } |
1da177e4 | 1270 | |
52fda114 | 1271 | nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks; |
1da177e4 LT |
1272 | |
1273 | /* | |
1274 | * Add the (disk blocks and inode) resources occupied by this | |
1275 | * inode to its dquots. We do this adjustment in the incore dquot, | |
1276 | * and also copy the changes to its buffer. | |
1277 | * We don't care about putting these changes in a transaction | |
1278 | * envelope because if we crash in the middle of a 'quotacheck' | |
1279 | * we have to start from the beginning anyway. | |
1280 | * Once we're done, we'll log all the dquot bufs. | |
1281 | * | |
c41564b5 | 1282 | * The *QUOTA_ON checks below may look pretty racy, but quotachecks |
1da177e4 LT |
1283 | * and quotaoffs don't race. (Quotachecks happen at mount time only). |
1284 | */ | |
1285 | if (XFS_IS_UQUOTA_ON(mp)) { | |
52fda114 CH |
1286 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid, |
1287 | XFS_DQ_USER, nblks, rtblks); | |
1288 | if (error) | |
1289 | goto error0; | |
1da177e4 | 1290 | } |
52fda114 CH |
1291 | |
1292 | if (XFS_IS_GQUOTA_ON(mp)) { | |
1293 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid, | |
1294 | XFS_DQ_GROUP, nblks, rtblks); | |
1295 | if (error) | |
1296 | goto error0; | |
1da177e4 | 1297 | } |
1da177e4 | 1298 | |
52fda114 | 1299 | if (XFS_IS_PQUOTA_ON(mp)) { |
6743099c | 1300 | error = xfs_qm_quotacheck_dqadjust(ip, xfs_get_projid(ip), |
52fda114 CH |
1301 | XFS_DQ_PROJ, nblks, rtblks); |
1302 | if (error) | |
1303 | goto error0; | |
1304 | } | |
1305 | ||
1306 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1307 | IRELE(ip); | |
1da177e4 | 1308 | *res = BULKSTAT_RV_DIDONE; |
014c2544 | 1309 | return 0; |
52fda114 CH |
1310 | |
1311 | error0: | |
1312 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1313 | IRELE(ip); | |
1314 | *res = BULKSTAT_RV_GIVEUP; | |
1315 | return error; | |
1da177e4 LT |
1316 | } |
1317 | ||
b84a3a96 CH |
1318 | STATIC int |
1319 | xfs_qm_flush_one( | |
43ff2122 CH |
1320 | struct xfs_dquot *dqp, |
1321 | void *data) | |
b84a3a96 | 1322 | { |
43ff2122 | 1323 | struct list_head *buffer_list = data; |
fe7257fd | 1324 | struct xfs_buf *bp = NULL; |
b84a3a96 CH |
1325 | int error = 0; |
1326 | ||
1327 | xfs_dqlock(dqp); | |
1328 | if (dqp->dq_flags & XFS_DQ_FREEING) | |
1329 | goto out_unlock; | |
1330 | if (!XFS_DQ_IS_DIRTY(dqp)) | |
1331 | goto out_unlock; | |
1332 | ||
43ff2122 | 1333 | xfs_dqflock(dqp); |
fe7257fd CH |
1334 | error = xfs_qm_dqflush(dqp, &bp); |
1335 | if (error) | |
1336 | goto out_unlock; | |
b84a3a96 | 1337 | |
43ff2122 | 1338 | xfs_buf_delwri_queue(bp, buffer_list); |
fe7257fd | 1339 | xfs_buf_relse(bp); |
b84a3a96 CH |
1340 | out_unlock: |
1341 | xfs_dqunlock(dqp); | |
1342 | return error; | |
1343 | } | |
1344 | ||
1da177e4 LT |
1345 | /* |
1346 | * Walk thru all the filesystem inodes and construct a consistent view | |
1347 | * of the disk quota world. If the quotacheck fails, disable quotas. | |
1348 | */ | |
1349 | int | |
1350 | xfs_qm_quotacheck( | |
1351 | xfs_mount_t *mp) | |
1352 | { | |
113a5683 CS |
1353 | int done, count, error, error2; |
1354 | xfs_ino_t lastino; | |
1355 | size_t structsz; | |
1356 | uint flags; | |
1357 | LIST_HEAD (buffer_list); | |
1358 | struct xfs_inode *uip = mp->m_quotainfo->qi_uquotaip; | |
1359 | struct xfs_inode *gip = mp->m_quotainfo->qi_gquotaip; | |
92f8ff73 | 1360 | struct xfs_inode *pip = mp->m_quotainfo->qi_pquotaip; |
1da177e4 LT |
1361 | |
1362 | count = INT_MAX; | |
1363 | structsz = 1; | |
1364 | lastino = 0; | |
1365 | flags = 0; | |
1366 | ||
92f8ff73 | 1367 | ASSERT(uip || gip || pip); |
1da177e4 LT |
1368 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1369 | ||
0b932ccc | 1370 | xfs_notice(mp, "Quotacheck needed: Please wait."); |
1da177e4 LT |
1371 | |
1372 | /* | |
c8ad20ff | 1373 | * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset |
1da177e4 LT |
1374 | * their counters to zero. We need a clean slate. |
1375 | * We don't log our changes till later. | |
1376 | */ | |
8a7b8a89 | 1377 | if (uip) { |
43ff2122 CH |
1378 | error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA, |
1379 | &buffer_list); | |
8a7b8a89 | 1380 | if (error) |
1da177e4 LT |
1381 | goto error_return; |
1382 | flags |= XFS_UQUOTA_CHKD; | |
1383 | } | |
1384 | ||
8a7b8a89 | 1385 | if (gip) { |
92f8ff73 | 1386 | error = xfs_qm_dqiterate(mp, gip, XFS_QMOPT_GQUOTA, |
43ff2122 | 1387 | &buffer_list); |
8a7b8a89 | 1388 | if (error) |
1da177e4 | 1389 | goto error_return; |
92f8ff73 CS |
1390 | flags |= XFS_GQUOTA_CHKD; |
1391 | } | |
1392 | ||
1393 | if (pip) { | |
1394 | error = xfs_qm_dqiterate(mp, pip, XFS_QMOPT_PQUOTA, | |
1395 | &buffer_list); | |
1396 | if (error) | |
1397 | goto error_return; | |
1398 | flags |= XFS_PQUOTA_CHKD; | |
1da177e4 LT |
1399 | } |
1400 | ||
1401 | do { | |
1402 | /* | |
1403 | * Iterate thru all the inodes in the file system, | |
1404 | * adjusting the corresponding dquot counters in core. | |
1405 | */ | |
7dce11db CH |
1406 | error = xfs_bulkstat(mp, &lastino, &count, |
1407 | xfs_qm_dqusage_adjust, | |
1408 | structsz, NULL, &done); | |
1409 | if (error) | |
1da177e4 LT |
1410 | break; |
1411 | ||
7dce11db | 1412 | } while (!done); |
1da177e4 | 1413 | |
4b8879df | 1414 | /* |
b84a3a96 CH |
1415 | * We've made all the changes that we need to make incore. Flush them |
1416 | * down to disk buffers if everything was updated successfully. | |
4b8879df | 1417 | */ |
43ff2122 CH |
1418 | if (XFS_IS_UQUOTA_ON(mp)) { |
1419 | error = xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_flush_one, | |
1420 | &buffer_list); | |
1421 | } | |
b84a3a96 | 1422 | if (XFS_IS_GQUOTA_ON(mp)) { |
43ff2122 CH |
1423 | error2 = xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_flush_one, |
1424 | &buffer_list); | |
b84a3a96 CH |
1425 | if (!error) |
1426 | error = error2; | |
1427 | } | |
1428 | if (XFS_IS_PQUOTA_ON(mp)) { | |
43ff2122 CH |
1429 | error2 = xfs_qm_dquot_walk(mp, XFS_DQ_PROJ, xfs_qm_flush_one, |
1430 | &buffer_list); | |
b84a3a96 CH |
1431 | if (!error) |
1432 | error = error2; | |
1433 | } | |
4b8879df | 1434 | |
43ff2122 CH |
1435 | error2 = xfs_buf_delwri_submit(&buffer_list); |
1436 | if (!error) | |
1437 | error = error2; | |
1438 | ||
1da177e4 LT |
1439 | /* |
1440 | * We can get this error if we couldn't do a dquot allocation inside | |
1441 | * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the | |
1442 | * dirty dquots that might be cached, we just want to get rid of them | |
1443 | * and turn quotaoff. The dquots won't be attached to any of the inodes | |
1444 | * at this point (because we intentionally didn't in dqget_noattach). | |
1445 | */ | |
1446 | if (error) { | |
8112e9dc | 1447 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 LT |
1448 | goto error_return; |
1449 | } | |
1da177e4 | 1450 | |
1da177e4 LT |
1451 | /* |
1452 | * If one type of quotas is off, then it will lose its | |
1453 | * quotachecked status, since we won't be doing accounting for | |
1454 | * that type anymore. | |
1455 | */ | |
4177af3a | 1456 | mp->m_qflags &= ~XFS_ALL_QUOTA_CHKD; |
1da177e4 LT |
1457 | mp->m_qflags |= flags; |
1458 | ||
1da177e4 | 1459 | error_return: |
43ff2122 CH |
1460 | while (!list_empty(&buffer_list)) { |
1461 | struct xfs_buf *bp = | |
1462 | list_first_entry(&buffer_list, struct xfs_buf, b_list); | |
1463 | list_del_init(&bp->b_list); | |
1464 | xfs_buf_relse(bp); | |
1465 | } | |
1466 | ||
1da177e4 | 1467 | if (error) { |
0b932ccc DC |
1468 | xfs_warn(mp, |
1469 | "Quotacheck: Unsuccessful (Error %d): Disabling quotas.", | |
1470 | error); | |
1da177e4 LT |
1471 | /* |
1472 | * We must turn off quotas. | |
1473 | */ | |
1474 | ASSERT(mp->m_quotainfo != NULL); | |
1da177e4 | 1475 | xfs_qm_destroy_quotainfo(mp); |
31d5577b | 1476 | if (xfs_mount_reset_sbqflags(mp)) { |
0b932ccc DC |
1477 | xfs_warn(mp, |
1478 | "Quotacheck: Failed to reset quota flags."); | |
31d5577b | 1479 | } |
0b932ccc DC |
1480 | } else |
1481 | xfs_notice(mp, "Quotacheck: Done."); | |
1da177e4 LT |
1482 | return (error); |
1483 | } | |
1484 | ||
1485 | /* | |
1486 | * This is called after the superblock has been read in and we're ready to | |
1487 | * iget the quota inodes. | |
1488 | */ | |
1489 | STATIC int | |
1490 | xfs_qm_init_quotainos( | |
1491 | xfs_mount_t *mp) | |
1492 | { | |
113a5683 CS |
1493 | struct xfs_inode *uip = NULL; |
1494 | struct xfs_inode *gip = NULL; | |
92f8ff73 | 1495 | struct xfs_inode *pip = NULL; |
113a5683 CS |
1496 | int error; |
1497 | __int64_t sbflags = 0; | |
1498 | uint flags = 0; | |
1da177e4 LT |
1499 | |
1500 | ASSERT(mp->m_quotainfo); | |
1da177e4 LT |
1501 | |
1502 | /* | |
1503 | * Get the uquota and gquota inodes | |
1504 | */ | |
62118709 | 1505 | if (xfs_sb_version_hasquota(&mp->m_sb)) { |
1da177e4 LT |
1506 | if (XFS_IS_UQUOTA_ON(mp) && |
1507 | mp->m_sb.sb_uquotino != NULLFSINO) { | |
1508 | ASSERT(mp->m_sb.sb_uquotino > 0); | |
113a5683 CS |
1509 | error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, |
1510 | 0, 0, &uip); | |
1511 | if (error) | |
1da177e4 LT |
1512 | return XFS_ERROR(error); |
1513 | } | |
92f8ff73 | 1514 | if (XFS_IS_GQUOTA_ON(mp) && |
1da177e4 LT |
1515 | mp->m_sb.sb_gquotino != NULLFSINO) { |
1516 | ASSERT(mp->m_sb.sb_gquotino > 0); | |
113a5683 CS |
1517 | error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, |
1518 | 0, 0, &gip); | |
1519 | if (error) | |
1520 | goto error_rele; | |
1da177e4 | 1521 | } |
92f8ff73 | 1522 | if (XFS_IS_PQUOTA_ON(mp) && |
d892d586 CS |
1523 | mp->m_sb.sb_pquotino != NULLFSINO) { |
1524 | ASSERT(mp->m_sb.sb_pquotino > 0); | |
1525 | error = xfs_iget(mp, NULL, mp->m_sb.sb_pquotino, | |
92f8ff73 CS |
1526 | 0, 0, &pip); |
1527 | if (error) | |
1528 | goto error_rele; | |
1529 | } | |
1da177e4 LT |
1530 | } else { |
1531 | flags |= XFS_QMOPT_SBVERSION; | |
1532 | sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
d892d586 CS |
1533 | XFS_SB_GQUOTINO | XFS_SB_PQUOTINO | |
1534 | XFS_SB_QFLAGS); | |
1da177e4 LT |
1535 | } |
1536 | ||
1537 | /* | |
92f8ff73 | 1538 | * Create the three inodes, if they don't exist already. The changes |
1da177e4 LT |
1539 | * made above will get added to a transaction and logged in one of |
1540 | * the qino_alloc calls below. If the device is readonly, | |
1541 | * temporarily switch to read-write to do this. | |
1542 | */ | |
1543 | if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { | |
113a5683 | 1544 | error = xfs_qm_qino_alloc(mp, &uip, |
1da177e4 | 1545 | sbflags | XFS_SB_UQUOTINO, |
113a5683 CS |
1546 | flags | XFS_QMOPT_UQUOTA); |
1547 | if (error) | |
1548 | goto error_rele; | |
1da177e4 LT |
1549 | |
1550 | flags &= ~XFS_QMOPT_SBVERSION; | |
1551 | } | |
92f8ff73 | 1552 | if (XFS_IS_GQUOTA_ON(mp) && gip == NULL) { |
c8ad20ff | 1553 | error = xfs_qm_qino_alloc(mp, &gip, |
92f8ff73 CS |
1554 | sbflags | XFS_SB_GQUOTINO, |
1555 | flags | XFS_QMOPT_GQUOTA); | |
1556 | if (error) | |
1557 | goto error_rele; | |
1558 | ||
1559 | flags &= ~XFS_QMOPT_SBVERSION; | |
1560 | } | |
1561 | if (XFS_IS_PQUOTA_ON(mp) && pip == NULL) { | |
92f8ff73 | 1562 | error = xfs_qm_qino_alloc(mp, &pip, |
d892d586 | 1563 | sbflags | XFS_SB_PQUOTINO, |
92f8ff73 | 1564 | flags | XFS_QMOPT_PQUOTA); |
113a5683 CS |
1565 | if (error) |
1566 | goto error_rele; | |
1da177e4 LT |
1567 | } |
1568 | ||
8a7b8a89 CH |
1569 | mp->m_quotainfo->qi_uquotaip = uip; |
1570 | mp->m_quotainfo->qi_gquotaip = gip; | |
92f8ff73 | 1571 | mp->m_quotainfo->qi_pquotaip = pip; |
1da177e4 | 1572 | |
014c2544 | 1573 | return 0; |
113a5683 CS |
1574 | |
1575 | error_rele: | |
1576 | if (uip) | |
1577 | IRELE(uip); | |
1578 | if (gip) | |
1579 | IRELE(gip); | |
92f8ff73 CS |
1580 | if (pip) |
1581 | IRELE(pip); | |
113a5683 | 1582 | return XFS_ERROR(error); |
1da177e4 LT |
1583 | } |
1584 | ||
92b2e5b3 CH |
1585 | STATIC void |
1586 | xfs_qm_dqfree_one( | |
1587 | struct xfs_dquot *dqp) | |
1588 | { | |
1589 | struct xfs_mount *mp = dqp->q_mount; | |
1590 | struct xfs_quotainfo *qi = mp->m_quotainfo; | |
1da177e4 | 1591 | |
9f920f11 | 1592 | mutex_lock(&qi->qi_tree_lock); |
329e0875 | 1593 | radix_tree_delete(xfs_dquot_tree(qi, dqp->q_core.d_flags), |
9f920f11 | 1594 | be32_to_cpu(dqp->q_core.d_id)); |
368e1361 | 1595 | |
92b2e5b3 | 1596 | qi->qi_dquots--; |
b84a3a96 | 1597 | mutex_unlock(&qi->qi_tree_lock); |
92b2e5b3 CH |
1598 | |
1599 | xfs_qm_dqdestroy(dqp); | |
1600 | } | |
1601 | ||
1602 | STATIC void | |
1603 | xfs_qm_dqreclaim_one( | |
1604 | struct xfs_dquot *dqp, | |
43ff2122 | 1605 | struct list_head *buffer_list, |
92b2e5b3 | 1606 | struct list_head *dispose_list) |
1da177e4 | 1607 | { |
92b2e5b3 | 1608 | struct xfs_mount *mp = dqp->q_mount; |
f8739c3c | 1609 | struct xfs_quotainfo *qi = mp->m_quotainfo; |
92b2e5b3 | 1610 | int error; |
1da177e4 | 1611 | |
92b2e5b3 | 1612 | if (!xfs_dqlock_nowait(dqp)) |
b870553c | 1613 | goto out_move_tail; |
bf72de31 | 1614 | |
92b2e5b3 CH |
1615 | /* |
1616 | * This dquot has acquired a reference in the meantime remove it from | |
1617 | * the freelist and try again. | |
1618 | */ | |
1619 | if (dqp->q_nrefs) { | |
1620 | xfs_dqunlock(dqp); | |
1da177e4 | 1621 | |
92b2e5b3 | 1622 | trace_xfs_dqreclaim_want(dqp); |
48776fd2 | 1623 | XFS_STATS_INC(xs_qm_dqwants); |
1da177e4 | 1624 | |
f8739c3c CH |
1625 | list_del_init(&dqp->q_lru); |
1626 | qi->qi_lru_count--; | |
48776fd2 | 1627 | XFS_STATS_DEC(xs_qm_dquot_unused); |
92b2e5b3 CH |
1628 | return; |
1629 | } | |
368e1361 | 1630 | |
92b2e5b3 CH |
1631 | /* |
1632 | * Try to grab the flush lock. If this dquot is in the process of | |
1633 | * getting flushed to disk, we don't want to reclaim it. | |
1634 | */ | |
1635 | if (!xfs_dqflock_nowait(dqp)) | |
b870553c | 1636 | goto out_unlock_move_tail; |
0b1b213f | 1637 | |
92b2e5b3 | 1638 | if (XFS_DQ_IS_DIRTY(dqp)) { |
fe7257fd CH |
1639 | struct xfs_buf *bp = NULL; |
1640 | ||
92b2e5b3 | 1641 | trace_xfs_dqreclaim_dirty(dqp); |
0b1b213f | 1642 | |
fe7257fd | 1643 | error = xfs_qm_dqflush(dqp, &bp); |
92b2e5b3 CH |
1644 | if (error) { |
1645 | xfs_warn(mp, "%s: dquot %p flush failed", | |
1646 | __func__, dqp); | |
b870553c | 1647 | goto out_unlock_move_tail; |
1da177e4 | 1648 | } |
368e1361 | 1649 | |
43ff2122 | 1650 | xfs_buf_delwri_queue(bp, buffer_list); |
fe7257fd | 1651 | xfs_buf_relse(bp); |
1da177e4 | 1652 | /* |
92b2e5b3 CH |
1653 | * Give the dquot another try on the freelist, as the |
1654 | * flushing will take some time. | |
1da177e4 | 1655 | */ |
b870553c | 1656 | goto out_unlock_move_tail; |
92b2e5b3 CH |
1657 | } |
1658 | xfs_dqfunlock(dqp); | |
92678554 | 1659 | |
92b2e5b3 CH |
1660 | /* |
1661 | * Prevent lookups now that we are past the point of no return. | |
1662 | */ | |
1663 | dqp->dq_flags |= XFS_DQ_FREEING; | |
1664 | xfs_dqunlock(dqp); | |
92678554 | 1665 | |
92b2e5b3 | 1666 | ASSERT(dqp->q_nrefs == 0); |
f8739c3c CH |
1667 | list_move_tail(&dqp->q_lru, dispose_list); |
1668 | qi->qi_lru_count--; | |
48776fd2 | 1669 | XFS_STATS_DEC(xs_qm_dquot_unused); |
92678554 | 1670 | |
92b2e5b3 | 1671 | trace_xfs_dqreclaim_done(dqp); |
48776fd2 | 1672 | XFS_STATS_INC(xs_qm_dqreclaims); |
92b2e5b3 | 1673 | return; |
1da177e4 | 1674 | |
92b2e5b3 CH |
1675 | /* |
1676 | * Move the dquot to the tail of the list so that we don't spin on it. | |
1677 | */ | |
b870553c DC |
1678 | out_unlock_move_tail: |
1679 | xfs_dqunlock(dqp); | |
1680 | out_move_tail: | |
f8739c3c | 1681 | list_move_tail(&dqp->q_lru, &qi->qi_lru_list); |
92b2e5b3 | 1682 | trace_xfs_dqreclaim_busy(dqp); |
48776fd2 | 1683 | XFS_STATS_INC(xs_qm_dqreclaim_misses); |
368e1361 | 1684 | } |
1da177e4 | 1685 | |
1da177e4 | 1686 | STATIC int |
7f8275d0 | 1687 | xfs_qm_shake( |
92b2e5b3 CH |
1688 | struct shrinker *shrink, |
1689 | struct shrink_control *sc) | |
1da177e4 | 1690 | { |
f8739c3c CH |
1691 | struct xfs_quotainfo *qi = |
1692 | container_of(shrink, struct xfs_quotainfo, qi_shrinker); | |
92b2e5b3 | 1693 | int nr_to_scan = sc->nr_to_scan; |
43ff2122 | 1694 | LIST_HEAD (buffer_list); |
92b2e5b3 CH |
1695 | LIST_HEAD (dispose_list); |
1696 | struct xfs_dquot *dqp; | |
43ff2122 | 1697 | int error; |
1da177e4 | 1698 | |
92b2e5b3 | 1699 | if ((sc->gfp_mask & (__GFP_FS|__GFP_WAIT)) != (__GFP_FS|__GFP_WAIT)) |
014c2544 | 1700 | return 0; |
92b2e5b3 CH |
1701 | if (!nr_to_scan) |
1702 | goto out; | |
1da177e4 | 1703 | |
f8739c3c CH |
1704 | mutex_lock(&qi->qi_lru_lock); |
1705 | while (!list_empty(&qi->qi_lru_list)) { | |
92b2e5b3 CH |
1706 | if (nr_to_scan-- <= 0) |
1707 | break; | |
f8739c3c CH |
1708 | dqp = list_first_entry(&qi->qi_lru_list, struct xfs_dquot, |
1709 | q_lru); | |
43ff2122 | 1710 | xfs_qm_dqreclaim_one(dqp, &buffer_list, &dispose_list); |
1da177e4 | 1711 | } |
f8739c3c | 1712 | mutex_unlock(&qi->qi_lru_lock); |
1da177e4 | 1713 | |
43ff2122 CH |
1714 | error = xfs_buf_delwri_submit(&buffer_list); |
1715 | if (error) | |
1716 | xfs_warn(NULL, "%s: dquot reclaim failed", __func__); | |
1717 | ||
92b2e5b3 | 1718 | while (!list_empty(&dispose_list)) { |
f8739c3c CH |
1719 | dqp = list_first_entry(&dispose_list, struct xfs_dquot, q_lru); |
1720 | list_del_init(&dqp->q_lru); | |
92b2e5b3 CH |
1721 | xfs_qm_dqfree_one(dqp); |
1722 | } | |
43ff2122 | 1723 | |
92b2e5b3 | 1724 | out: |
f8739c3c | 1725 | return (qi->qi_lru_count / 100) * sysctl_vfs_cache_pressure; |
1da177e4 LT |
1726 | } |
1727 | ||
1da177e4 LT |
1728 | /* |
1729 | * Start a transaction and write the incore superblock changes to | |
1730 | * disk. flags parameter indicates which fields have changed. | |
1731 | */ | |
1732 | int | |
1733 | xfs_qm_write_sb_changes( | |
1734 | xfs_mount_t *mp, | |
1735 | __int64_t flags) | |
1736 | { | |
1737 | xfs_trans_t *tp; | |
1738 | int error; | |
1739 | ||
1da177e4 | 1740 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); |
3d3c8b52 | 1741 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_sbchange, 0, 0); |
f910a8c6 | 1742 | if (error) { |
1da177e4 | 1743 | xfs_trans_cancel(tp, 0); |
014c2544 | 1744 | return error; |
1da177e4 LT |
1745 | } |
1746 | ||
1747 | xfs_mod_sb(tp, flags); | |
e5720eec | 1748 | error = xfs_trans_commit(tp, 0); |
1da177e4 | 1749 | |
e5720eec | 1750 | return error; |
1da177e4 LT |
1751 | } |
1752 | ||
1753 | ||
1754 | /* --------------- utility functions for vnodeops ---------------- */ | |
1755 | ||
1756 | ||
1757 | /* | |
6c77b0ea | 1758 | * Given an inode, a uid, gid and prid make sure that we have |
1da177e4 LT |
1759 | * allocated relevant dquot(s) on disk, and that we won't exceed inode |
1760 | * quotas by creating this file. | |
1761 | * This also attaches dquot(s) to the given inode after locking it, | |
1762 | * and returns the dquots corresponding to the uid and/or gid. | |
1763 | * | |
1764 | * in : inode (unlocked) | |
1765 | * out : udquot, gdquot with references taken and unlocked | |
1766 | */ | |
1767 | int | |
1768 | xfs_qm_vop_dqalloc( | |
7d095257 | 1769 | struct xfs_inode *ip, |
7aab1b28 DE |
1770 | xfs_dqid_t uid, |
1771 | xfs_dqid_t gid, | |
7d095257 CH |
1772 | prid_t prid, |
1773 | uint flags, | |
1774 | struct xfs_dquot **O_udqpp, | |
92f8ff73 CS |
1775 | struct xfs_dquot **O_gdqpp, |
1776 | struct xfs_dquot **O_pdqpp) | |
1da177e4 | 1777 | { |
7d095257 | 1778 | struct xfs_mount *mp = ip->i_mount; |
113a5683 CS |
1779 | struct xfs_dquot *uq = NULL; |
1780 | struct xfs_dquot *gq = NULL; | |
92f8ff73 | 1781 | struct xfs_dquot *pq = NULL; |
7d095257 CH |
1782 | int error; |
1783 | uint lockflags; | |
1da177e4 | 1784 | |
7d095257 | 1785 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
1da177e4 LT |
1786 | return 0; |
1787 | ||
1788 | lockflags = XFS_ILOCK_EXCL; | |
1789 | xfs_ilock(ip, lockflags); | |
1790 | ||
bd186aa9 | 1791 | if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) |
1da177e4 LT |
1792 | gid = ip->i_d.di_gid; |
1793 | ||
1794 | /* | |
1795 | * Attach the dquot(s) to this inode, doing a dquot allocation | |
1796 | * if necessary. The dquot(s) will not be locked. | |
1797 | */ | |
1798 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
7d095257 CH |
1799 | error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC); |
1800 | if (error) { | |
1da177e4 | 1801 | xfs_iunlock(ip, lockflags); |
014c2544 | 1802 | return error; |
1da177e4 LT |
1803 | } |
1804 | } | |
1805 | ||
c8ad20ff | 1806 | if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { |
1da177e4 LT |
1807 | if (ip->i_d.di_uid != uid) { |
1808 | /* | |
1809 | * What we need is the dquot that has this uid, and | |
1810 | * if we send the inode to dqget, the uid of the inode | |
1811 | * takes priority over what's sent in the uid argument. | |
1812 | * We must unlock inode here before calling dqget if | |
1813 | * we're not sending the inode, because otherwise | |
1814 | * we'll deadlock by doing trans_reserve while | |
1815 | * holding ilock. | |
1816 | */ | |
1817 | xfs_iunlock(ip, lockflags); | |
7aab1b28 | 1818 | error = xfs_qm_dqget(mp, NULL, uid, |
1da177e4 LT |
1819 | XFS_DQ_USER, |
1820 | XFS_QMOPT_DQALLOC | | |
1821 | XFS_QMOPT_DOWARN, | |
113a5683 CS |
1822 | &uq); |
1823 | if (error) { | |
1da177e4 | 1824 | ASSERT(error != ENOENT); |
014c2544 | 1825 | return error; |
1da177e4 LT |
1826 | } |
1827 | /* | |
1828 | * Get the ilock in the right order. | |
1829 | */ | |
1830 | xfs_dqunlock(uq); | |
1831 | lockflags = XFS_ILOCK_SHARED; | |
1832 | xfs_ilock(ip, lockflags); | |
1833 | } else { | |
1834 | /* | |
1835 | * Take an extra reference, because we'll return | |
1836 | * this to caller | |
1837 | */ | |
1838 | ASSERT(ip->i_udquot); | |
78e55892 | 1839 | uq = xfs_qm_dqhold(ip->i_udquot); |
1da177e4 LT |
1840 | } |
1841 | } | |
c8ad20ff | 1842 | if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { |
1da177e4 LT |
1843 | if (ip->i_d.di_gid != gid) { |
1844 | xfs_iunlock(ip, lockflags); | |
7aab1b28 | 1845 | error = xfs_qm_dqget(mp, NULL, gid, |
1da177e4 LT |
1846 | XFS_DQ_GROUP, |
1847 | XFS_QMOPT_DQALLOC | | |
1848 | XFS_QMOPT_DOWARN, | |
113a5683 CS |
1849 | &gq); |
1850 | if (error) { | |
1da177e4 | 1851 | ASSERT(error != ENOENT); |
113a5683 | 1852 | goto error_rele; |
1da177e4 LT |
1853 | } |
1854 | xfs_dqunlock(gq); | |
1855 | lockflags = XFS_ILOCK_SHARED; | |
1856 | xfs_ilock(ip, lockflags); | |
1857 | } else { | |
1858 | ASSERT(ip->i_gdquot); | |
78e55892 | 1859 | gq = xfs_qm_dqhold(ip->i_gdquot); |
1da177e4 | 1860 | } |
92f8ff73 CS |
1861 | } |
1862 | if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { | |
6743099c | 1863 | if (xfs_get_projid(ip) != prid) { |
c8ad20ff | 1864 | xfs_iunlock(ip, lockflags); |
113a5683 | 1865 | error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, |
c8ad20ff NS |
1866 | XFS_DQ_PROJ, |
1867 | XFS_QMOPT_DQALLOC | | |
1868 | XFS_QMOPT_DOWARN, | |
92f8ff73 | 1869 | &pq); |
113a5683 | 1870 | if (error) { |
c8ad20ff | 1871 | ASSERT(error != ENOENT); |
113a5683 | 1872 | goto error_rele; |
c8ad20ff | 1873 | } |
92f8ff73 | 1874 | xfs_dqunlock(pq); |
c8ad20ff NS |
1875 | lockflags = XFS_ILOCK_SHARED; |
1876 | xfs_ilock(ip, lockflags); | |
1877 | } else { | |
92f8ff73 CS |
1878 | ASSERT(ip->i_pdquot); |
1879 | pq = xfs_qm_dqhold(ip->i_pdquot); | |
c8ad20ff | 1880 | } |
1da177e4 LT |
1881 | } |
1882 | if (uq) | |
0b1b213f | 1883 | trace_xfs_dquot_dqalloc(ip); |
1da177e4 LT |
1884 | |
1885 | xfs_iunlock(ip, lockflags); | |
1886 | if (O_udqpp) | |
1887 | *O_udqpp = uq; | |
1888 | else if (uq) | |
1889 | xfs_qm_dqrele(uq); | |
1890 | if (O_gdqpp) | |
1891 | *O_gdqpp = gq; | |
1892 | else if (gq) | |
1893 | xfs_qm_dqrele(gq); | |
92f8ff73 CS |
1894 | if (O_pdqpp) |
1895 | *O_pdqpp = pq; | |
1896 | else if (pq) | |
1897 | xfs_qm_dqrele(pq); | |
014c2544 | 1898 | return 0; |
113a5683 CS |
1899 | |
1900 | error_rele: | |
92f8ff73 CS |
1901 | if (gq) |
1902 | xfs_qm_dqrele(gq); | |
113a5683 CS |
1903 | if (uq) |
1904 | xfs_qm_dqrele(uq); | |
1905 | return error; | |
1da177e4 LT |
1906 | } |
1907 | ||
1908 | /* | |
1909 | * Actually transfer ownership, and do dquot modifications. | |
1910 | * These were already reserved. | |
1911 | */ | |
1912 | xfs_dquot_t * | |
1913 | xfs_qm_vop_chown( | |
1914 | xfs_trans_t *tp, | |
1915 | xfs_inode_t *ip, | |
1916 | xfs_dquot_t **IO_olddq, | |
1917 | xfs_dquot_t *newdq) | |
1918 | { | |
1919 | xfs_dquot_t *prevdq; | |
06d10dd9 NS |
1920 | uint bfield = XFS_IS_REALTIME_INODE(ip) ? |
1921 | XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; | |
1922 | ||
7d095257 | 1923 | |
579aa9ca | 1924 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
1925 | ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); |
1926 | ||
1927 | /* old dquot */ | |
1928 | prevdq = *IO_olddq; | |
1929 | ASSERT(prevdq); | |
1930 | ASSERT(prevdq != newdq); | |
1931 | ||
06d10dd9 NS |
1932 | xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks)); |
1933 | xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); | |
1da177e4 LT |
1934 | |
1935 | /* the sparkling new dquot */ | |
06d10dd9 NS |
1936 | xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks); |
1937 | xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); | |
1da177e4 LT |
1938 | |
1939 | /* | |
78e55892 CH |
1940 | * Take an extra reference, because the inode is going to keep |
1941 | * this dquot pointer even after the trans_commit. | |
1da177e4 | 1942 | */ |
78e55892 | 1943 | *IO_olddq = xfs_qm_dqhold(newdq); |
1da177e4 | 1944 | |
014c2544 | 1945 | return prevdq; |
1da177e4 LT |
1946 | } |
1947 | ||
1948 | /* | |
c8ad20ff | 1949 | * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID). |
1da177e4 LT |
1950 | */ |
1951 | int | |
1952 | xfs_qm_vop_chown_reserve( | |
113a5683 CS |
1953 | struct xfs_trans *tp, |
1954 | struct xfs_inode *ip, | |
1955 | struct xfs_dquot *udqp, | |
1956 | struct xfs_dquot *gdqp, | |
92f8ff73 | 1957 | struct xfs_dquot *pdqp, |
113a5683 | 1958 | uint flags) |
1da177e4 | 1959 | { |
113a5683 CS |
1960 | struct xfs_mount *mp = ip->i_mount; |
1961 | uint delblks, blkflags, prjflags = 0; | |
1962 | struct xfs_dquot *udq_unres = NULL; | |
1963 | struct xfs_dquot *gdq_unres = NULL; | |
92f8ff73 | 1964 | struct xfs_dquot *pdq_unres = NULL; |
113a5683 CS |
1965 | struct xfs_dquot *udq_delblks = NULL; |
1966 | struct xfs_dquot *gdq_delblks = NULL; | |
92f8ff73 | 1967 | struct xfs_dquot *pdq_delblks = NULL; |
113a5683 | 1968 | int error; |
7d095257 | 1969 | |
1da177e4 | 1970 | |
579aa9ca | 1971 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); |
1da177e4 LT |
1972 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1973 | ||
1974 | delblks = ip->i_delayed_blks; | |
06d10dd9 NS |
1975 | blkflags = XFS_IS_REALTIME_INODE(ip) ? |
1976 | XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS; | |
1da177e4 LT |
1977 | |
1978 | if (XFS_IS_UQUOTA_ON(mp) && udqp && | |
7aab1b28 | 1979 | ip->i_d.di_uid != be32_to_cpu(udqp->q_core.d_id)) { |
113a5683 | 1980 | udq_delblks = udqp; |
1da177e4 LT |
1981 | /* |
1982 | * If there are delayed allocation blocks, then we have to | |
1983 | * unreserve those from the old dquot, and add them to the | |
1984 | * new dquot. | |
1985 | */ | |
1986 | if (delblks) { | |
1987 | ASSERT(ip->i_udquot); | |
113a5683 | 1988 | udq_unres = ip->i_udquot; |
1da177e4 LT |
1989 | } |
1990 | } | |
92f8ff73 CS |
1991 | if (XFS_IS_GQUOTA_ON(ip->i_mount) && gdqp && |
1992 | ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id)) { | |
1993 | gdq_delblks = gdqp; | |
1994 | if (delblks) { | |
1995 | ASSERT(ip->i_gdquot); | |
1996 | gdq_unres = ip->i_gdquot; | |
1997 | } | |
1998 | } | |
1999 | ||
2000 | if (XFS_IS_PQUOTA_ON(ip->i_mount) && pdqp && | |
2001 | xfs_get_projid(ip) != be32_to_cpu(pdqp->q_core.d_id)) { | |
2002 | prjflags = XFS_QMOPT_ENOSPC; | |
2003 | pdq_delblks = pdqp; | |
2004 | if (delblks) { | |
2005 | ASSERT(ip->i_pdquot); | |
2006 | pdq_unres = ip->i_pdquot; | |
1da177e4 LT |
2007 | } |
2008 | } | |
2009 | ||
113a5683 | 2010 | error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, |
92f8ff73 CS |
2011 | udq_delblks, gdq_delblks, pdq_delblks, |
2012 | ip->i_d.di_nblocks, 1, | |
113a5683 CS |
2013 | flags | blkflags | prjflags); |
2014 | if (error) | |
2015 | return error; | |
1da177e4 LT |
2016 | |
2017 | /* | |
2018 | * Do the delayed blks reservations/unreservations now. Since, these | |
2019 | * are done without the help of a transaction, if a reservation fails | |
2020 | * its previous reservations won't be automatically undone by trans | |
2021 | * code. So, we have to do it manually here. | |
2022 | */ | |
2023 | if (delblks) { | |
2024 | /* | |
2025 | * Do the reservations first. Unreservation can't fail. | |
2026 | */ | |
92f8ff73 CS |
2027 | ASSERT(udq_delblks || gdq_delblks || pdq_delblks); |
2028 | ASSERT(udq_unres || gdq_unres || pdq_unres); | |
113a5683 | 2029 | error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, |
92f8ff73 CS |
2030 | udq_delblks, gdq_delblks, pdq_delblks, |
2031 | (xfs_qcnt_t)delblks, 0, | |
113a5683 CS |
2032 | flags | blkflags | prjflags); |
2033 | if (error) | |
2034 | return error; | |
1da177e4 | 2035 | xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, |
92f8ff73 CS |
2036 | udq_unres, gdq_unres, pdq_unres, |
2037 | -((xfs_qcnt_t)delblks), 0, blkflags); | |
1da177e4 LT |
2038 | } |
2039 | ||
2040 | return (0); | |
2041 | } | |
2042 | ||
2043 | int | |
2044 | xfs_qm_vop_rename_dqattach( | |
7d095257 | 2045 | struct xfs_inode **i_tab) |
1da177e4 | 2046 | { |
7d095257 CH |
2047 | struct xfs_mount *mp = i_tab[0]->i_mount; |
2048 | int i; | |
1da177e4 | 2049 | |
7d095257 | 2050 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
014c2544 | 2051 | return 0; |
1da177e4 | 2052 | |
7d095257 CH |
2053 | for (i = 0; (i < 4 && i_tab[i]); i++) { |
2054 | struct xfs_inode *ip = i_tab[i]; | |
2055 | int error; | |
2056 | ||
1da177e4 LT |
2057 | /* |
2058 | * Watch out for duplicate entries in the table. | |
2059 | */ | |
7d095257 CH |
2060 | if (i == 0 || ip != i_tab[i-1]) { |
2061 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
1da177e4 LT |
2062 | error = xfs_qm_dqattach(ip, 0); |
2063 | if (error) | |
014c2544 | 2064 | return error; |
1da177e4 LT |
2065 | } |
2066 | } | |
2067 | } | |
014c2544 | 2068 | return 0; |
1da177e4 LT |
2069 | } |
2070 | ||
2071 | void | |
7d095257 CH |
2072 | xfs_qm_vop_create_dqattach( |
2073 | struct xfs_trans *tp, | |
2074 | struct xfs_inode *ip, | |
2075 | struct xfs_dquot *udqp, | |
92f8ff73 CS |
2076 | struct xfs_dquot *gdqp, |
2077 | struct xfs_dquot *pdqp) | |
1da177e4 | 2078 | { |
7d095257 CH |
2079 | struct xfs_mount *mp = tp->t_mountp; |
2080 | ||
2081 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) | |
1da177e4 LT |
2082 | return; |
2083 | ||
579aa9ca | 2084 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
7d095257 | 2085 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1da177e4 LT |
2086 | |
2087 | if (udqp) { | |
1da177e4 | 2088 | ASSERT(ip->i_udquot == NULL); |
7d095257 | 2089 | ASSERT(XFS_IS_UQUOTA_ON(mp)); |
1149d96a | 2090 | ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id)); |
78e55892 CH |
2091 | |
2092 | ip->i_udquot = xfs_qm_dqhold(udqp); | |
1da177e4 LT |
2093 | xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); |
2094 | } | |
2095 | if (gdqp) { | |
1da177e4 | 2096 | ASSERT(ip->i_gdquot == NULL); |
92f8ff73 CS |
2097 | ASSERT(XFS_IS_GQUOTA_ON(mp)); |
2098 | ASSERT(ip->i_d.di_gid == be32_to_cpu(gdqp->q_core.d_id)); | |
78e55892 | 2099 | ip->i_gdquot = xfs_qm_dqhold(gdqp); |
1da177e4 LT |
2100 | xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); |
2101 | } | |
92f8ff73 CS |
2102 | if (pdqp) { |
2103 | ASSERT(ip->i_pdquot == NULL); | |
2104 | ASSERT(XFS_IS_PQUOTA_ON(mp)); | |
2105 | ASSERT(xfs_get_projid(ip) == be32_to_cpu(pdqp->q_core.d_id)); | |
2106 | ||
2107 | ip->i_pdquot = xfs_qm_dqhold(pdqp); | |
2108 | xfs_trans_mod_dquot(tp, pdqp, XFS_TRANS_DQ_ICOUNT, 1); | |
2109 | } | |
1da177e4 LT |
2110 | } |
2111 |