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Commit | Line | Data |
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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" | |
a4fbe6ab | 20 | #include "xfs_shared.h" |
6ca1c906 | 21 | #include "xfs_format.h" |
239880ef | 22 | #include "xfs_log_format.h" |
239880ef | 23 | #include "xfs_trans_resv.h" |
a844f451 | 24 | #include "xfs_bit.h" |
1da177e4 LT |
25 | #include "xfs_sb.h" |
26 | #include "xfs_ag.h" | |
1da177e4 | 27 | #include "xfs_mount.h" |
1da177e4 | 28 | #include "xfs_inode.h" |
a844f451 NS |
29 | #include "xfs_ialloc.h" |
30 | #include "xfs_itable.h" | |
239880ef | 31 | #include "xfs_quota.h" |
1da177e4 | 32 | #include "xfs_error.h" |
a844f451 | 33 | #include "xfs_bmap.h" |
a4fbe6ab | 34 | #include "xfs_bmap_btree.h" |
239880ef | 35 | #include "xfs_trans.h" |
1da177e4 | 36 | #include "xfs_trans_space.h" |
1da177e4 | 37 | #include "xfs_qm.h" |
0b1b213f | 38 | #include "xfs_trace.h" |
33479e05 | 39 | #include "xfs_icache.h" |
6fcdc59d | 40 | #include "xfs_cksum.h" |
a4fbe6ab | 41 | #include "xfs_dinode.h" |
1da177e4 LT |
42 | |
43 | /* | |
44 | * The global quota manager. There is only one of these for the entire | |
45 | * system, _not_ one per file system. XQM keeps track of the overall | |
46 | * quota functionality, including maintaining the freelist and hash | |
47 | * tables of dquots. | |
48 | */ | |
1da177e4 | 49 | STATIC int xfs_qm_init_quotainos(xfs_mount_t *); |
ba0f32d4 | 50 | STATIC int xfs_qm_init_quotainfo(xfs_mount_t *); |
1da177e4 | 51 | |
cd56a39a DC |
52 | |
53 | STATIC void xfs_qm_dqfree_one(struct xfs_dquot *dqp); | |
b84a3a96 CH |
54 | /* |
55 | * We use the batch lookup interface to iterate over the dquots as it | |
56 | * currently is the only interface into the radix tree code that allows | |
57 | * fuzzy lookups instead of exact matches. Holding the lock over multiple | |
58 | * operations is fine as all callers are used either during mount/umount | |
59 | * or quotaoff. | |
60 | */ | |
61 | #define XFS_DQ_LOOKUP_BATCH 32 | |
62 | ||
63 | STATIC int | |
64 | xfs_qm_dquot_walk( | |
65 | struct xfs_mount *mp, | |
66 | int type, | |
43ff2122 CH |
67 | int (*execute)(struct xfs_dquot *dqp, void *data), |
68 | void *data) | |
b84a3a96 CH |
69 | { |
70 | struct xfs_quotainfo *qi = mp->m_quotainfo; | |
329e0875 | 71 | struct radix_tree_root *tree = xfs_dquot_tree(qi, type); |
b84a3a96 CH |
72 | uint32_t next_index; |
73 | int last_error = 0; | |
74 | int skipped; | |
75 | int nr_found; | |
76 | ||
77 | restart: | |
78 | skipped = 0; | |
79 | next_index = 0; | |
80 | nr_found = 0; | |
81 | ||
82 | while (1) { | |
83 | struct xfs_dquot *batch[XFS_DQ_LOOKUP_BATCH]; | |
84 | int error = 0; | |
85 | int i; | |
86 | ||
87 | mutex_lock(&qi->qi_tree_lock); | |
88 | nr_found = radix_tree_gang_lookup(tree, (void **)batch, | |
89 | next_index, XFS_DQ_LOOKUP_BATCH); | |
90 | if (!nr_found) { | |
91 | mutex_unlock(&qi->qi_tree_lock); | |
92 | break; | |
93 | } | |
94 | ||
95 | for (i = 0; i < nr_found; i++) { | |
96 | struct xfs_dquot *dqp = batch[i]; | |
97 | ||
98 | next_index = be32_to_cpu(dqp->q_core.d_id) + 1; | |
99 | ||
43ff2122 | 100 | error = execute(batch[i], data); |
b84a3a96 CH |
101 | if (error == EAGAIN) { |
102 | skipped++; | |
103 | continue; | |
104 | } | |
105 | if (error && last_error != EFSCORRUPTED) | |
106 | last_error = error; | |
107 | } | |
108 | ||
109 | mutex_unlock(&qi->qi_tree_lock); | |
110 | ||
111 | /* bail out if the filesystem is corrupted. */ | |
112 | if (last_error == EFSCORRUPTED) { | |
113 | skipped = 0; | |
114 | break; | |
115 | } | |
116 | } | |
117 | ||
118 | if (skipped) { | |
119 | delay(1); | |
120 | goto restart; | |
121 | } | |
122 | ||
123 | return last_error; | |
124 | } | |
125 | ||
126 | ||
127 | /* | |
128 | * Purge a dquot from all tracking data structures and free it. | |
129 | */ | |
130 | STATIC int | |
131 | xfs_qm_dqpurge( | |
43ff2122 CH |
132 | struct xfs_dquot *dqp, |
133 | void *data) | |
b84a3a96 CH |
134 | { |
135 | struct xfs_mount *mp = dqp->q_mount; | |
136 | struct xfs_quotainfo *qi = mp->m_quotainfo; | |
b84a3a96 CH |
137 | |
138 | xfs_dqlock(dqp); | |
139 | if ((dqp->dq_flags & XFS_DQ_FREEING) || dqp->q_nrefs != 0) { | |
140 | xfs_dqunlock(dqp); | |
141 | return EAGAIN; | |
142 | } | |
143 | ||
b84a3a96 CH |
144 | dqp->dq_flags |= XFS_DQ_FREEING; |
145 | ||
43ff2122 | 146 | xfs_dqflock(dqp); |
b84a3a96 CH |
147 | |
148 | /* | |
149 | * If we are turning this type of quotas off, we don't care | |
150 | * about the dirty metadata sitting in this dquot. OTOH, if | |
151 | * we're unmounting, we do care, so we flush it and wait. | |
152 | */ | |
153 | if (XFS_DQ_IS_DIRTY(dqp)) { | |
fe7257fd CH |
154 | struct xfs_buf *bp = NULL; |
155 | int error; | |
b84a3a96 CH |
156 | |
157 | /* | |
158 | * We don't care about getting disk errors here. We need | |
159 | * to purge this dquot anyway, so we go ahead regardless. | |
160 | */ | |
fe7257fd CH |
161 | error = xfs_qm_dqflush(dqp, &bp); |
162 | if (error) { | |
b84a3a96 CH |
163 | xfs_warn(mp, "%s: dquot %p flush failed", |
164 | __func__, dqp); | |
fe7257fd CH |
165 | } else { |
166 | error = xfs_bwrite(bp); | |
167 | xfs_buf_relse(bp); | |
168 | } | |
b84a3a96 CH |
169 | xfs_dqflock(dqp); |
170 | } | |
171 | ||
172 | ASSERT(atomic_read(&dqp->q_pincount) == 0); | |
173 | ASSERT(XFS_FORCED_SHUTDOWN(mp) || | |
174 | !(dqp->q_logitem.qli_item.li_flags & XFS_LI_IN_AIL)); | |
175 | ||
176 | xfs_dqfunlock(dqp); | |
177 | xfs_dqunlock(dqp); | |
178 | ||
329e0875 | 179 | radix_tree_delete(xfs_dquot_tree(qi, dqp->q_core.d_flags), |
b84a3a96 CH |
180 | be32_to_cpu(dqp->q_core.d_id)); |
181 | qi->qi_dquots--; | |
182 | ||
183 | /* | |
184 | * We move dquots to the freelist as soon as their reference count | |
185 | * hits zero, so it really should be on the freelist here. | |
186 | */ | |
b84a3a96 | 187 | ASSERT(!list_empty(&dqp->q_lru)); |
cd56a39a | 188 | list_lru_del(&qi->qi_lru, &dqp->q_lru); |
b84a3a96 | 189 | XFS_STATS_DEC(xs_qm_dquot_unused); |
b84a3a96 CH |
190 | |
191 | xfs_qm_dqdestroy(dqp); | |
df8052e7 JL |
192 | return 0; |
193 | } | |
194 | ||
195 | /* | |
196 | * Release the group or project dquot pointers the user dquots maybe carrying | |
197 | * around as a hint, and proceed to purge the user dquot cache if requested. | |
198 | */ | |
199 | STATIC int | |
200 | xfs_qm_dqpurge_hints( | |
201 | struct xfs_dquot *dqp, | |
202 | void *data) | |
203 | { | |
204 | struct xfs_dquot *gdqp = NULL; | |
205 | struct xfs_dquot *pdqp = NULL; | |
206 | uint flags = *((uint *)data); | |
207 | ||
208 | xfs_dqlock(dqp); | |
209 | if (dqp->dq_flags & XFS_DQ_FREEING) { | |
210 | xfs_dqunlock(dqp); | |
211 | return EAGAIN; | |
212 | } | |
213 | ||
214 | /* If this quota has a hint attached, prepare for releasing it now */ | |
215 | gdqp = dqp->q_gdquot; | |
216 | if (gdqp) | |
217 | dqp->q_gdquot = NULL; | |
218 | ||
219 | pdqp = dqp->q_pdquot; | |
220 | if (pdqp) | |
221 | dqp->q_pdquot = NULL; | |
222 | ||
223 | xfs_dqunlock(dqp); | |
b84a3a96 CH |
224 | |
225 | if (gdqp) | |
df8052e7 | 226 | xfs_qm_dqrele(gdqp); |
92f8ff73 | 227 | if (pdqp) |
df8052e7 JL |
228 | xfs_qm_dqrele(pdqp); |
229 | ||
230 | if (flags & XFS_QMOPT_UQUOTA) | |
231 | return xfs_qm_dqpurge(dqp, NULL); | |
232 | ||
b84a3a96 CH |
233 | return 0; |
234 | } | |
235 | ||
236 | /* | |
237 | * Purge the dquot cache. | |
238 | */ | |
239 | void | |
240 | xfs_qm_dqpurge_all( | |
241 | struct xfs_mount *mp, | |
242 | uint flags) | |
243 | { | |
df8052e7 JL |
244 | /* |
245 | * We have to release group/project dquot hint(s) from the user dquot | |
246 | * at first if they are there, otherwise we would run into an infinite | |
247 | * loop while walking through radix tree to purge other type of dquots | |
248 | * since their refcount is not zero if the user dquot refers to them | |
249 | * as hint. | |
250 | * | |
251 | * Call the special xfs_qm_dqpurge_hints() will end up go through the | |
252 | * general xfs_qm_dqpurge() against user dquot cache if requested. | |
253 | */ | |
254 | xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_dqpurge_hints, &flags); | |
255 | ||
b84a3a96 | 256 | if (flags & XFS_QMOPT_GQUOTA) |
43ff2122 | 257 | xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_dqpurge, NULL); |
b84a3a96 | 258 | if (flags & XFS_QMOPT_PQUOTA) |
43ff2122 | 259 | xfs_qm_dquot_walk(mp, XFS_DQ_PROJ, xfs_qm_dqpurge, NULL); |
b84a3a96 CH |
260 | } |
261 | ||
1da177e4 LT |
262 | /* |
263 | * Just destroy the quotainfo structure. | |
264 | */ | |
265 | void | |
7d095257 CH |
266 | xfs_qm_unmount( |
267 | struct xfs_mount *mp) | |
1da177e4 | 268 | { |
7d095257 | 269 | if (mp->m_quotainfo) { |
8112e9dc | 270 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 | 271 | xfs_qm_destroy_quotainfo(mp); |
7d095257 | 272 | } |
1da177e4 LT |
273 | } |
274 | ||
275 | ||
276 | /* | |
277 | * This is called from xfs_mountfs to start quotas and initialize all | |
278 | * necessary data structures like quotainfo. This is also responsible for | |
279 | * running a quotacheck as necessary. We are guaranteed that the superblock | |
280 | * is consistently read in at this point. | |
53aa7915 DC |
281 | * |
282 | * If we fail here, the mount will continue with quota turned off. We don't | |
283 | * need to inidicate success or failure at all. | |
1da177e4 | 284 | */ |
53aa7915 | 285 | void |
1da177e4 | 286 | xfs_qm_mount_quotas( |
4249023a | 287 | xfs_mount_t *mp) |
1da177e4 | 288 | { |
1da177e4 LT |
289 | int error = 0; |
290 | uint sbf; | |
291 | ||
1da177e4 LT |
292 | /* |
293 | * If quotas on realtime volumes is not supported, we disable | |
294 | * quotas immediately. | |
295 | */ | |
296 | if (mp->m_sb.sb_rextents) { | |
0b932ccc | 297 | xfs_notice(mp, "Cannot turn on quotas for realtime filesystem"); |
1da177e4 LT |
298 | mp->m_qflags = 0; |
299 | goto write_changes; | |
300 | } | |
301 | ||
1da177e4 | 302 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
155ffd07 | 303 | |
1da177e4 LT |
304 | /* |
305 | * Allocate the quotainfo structure inside the mount struct, and | |
306 | * create quotainode(s), and change/rev superblock if necessary. | |
307 | */ | |
53aa7915 DC |
308 | error = xfs_qm_init_quotainfo(mp); |
309 | if (error) { | |
1da177e4 LT |
310 | /* |
311 | * We must turn off quotas. | |
312 | */ | |
313 | ASSERT(mp->m_quotainfo == NULL); | |
314 | mp->m_qflags = 0; | |
315 | goto write_changes; | |
316 | } | |
317 | /* | |
318 | * If any of the quotas are not consistent, do a quotacheck. | |
319 | */ | |
4249023a | 320 | if (XFS_QM_NEED_QUOTACHECK(mp)) { |
53aa7915 DC |
321 | error = xfs_qm_quotacheck(mp); |
322 | if (error) { | |
323 | /* Quotacheck failed and disabled quotas. */ | |
324 | return; | |
1da177e4 | 325 | } |
1da177e4 | 326 | } |
646d5bda DD |
327 | /* |
328 | * If one type of quotas is off, then it will lose its | |
329 | * quotachecked status, since we won't be doing accounting for | |
330 | * that type anymore. | |
331 | */ | |
53aa7915 | 332 | if (!XFS_IS_UQUOTA_ON(mp)) |
646d5bda | 333 | mp->m_qflags &= ~XFS_UQUOTA_CHKD; |
83e782e1 CS |
334 | if (!XFS_IS_GQUOTA_ON(mp)) |
335 | mp->m_qflags &= ~XFS_GQUOTA_CHKD; | |
336 | if (!XFS_IS_PQUOTA_ON(mp)) | |
337 | mp->m_qflags &= ~XFS_PQUOTA_CHKD; | |
155ffd07 | 338 | |
1da177e4 LT |
339 | write_changes: |
340 | /* | |
3685c2a1 | 341 | * We actually don't have to acquire the m_sb_lock at all. |
1da177e4 LT |
342 | * This can only be called from mount, and that's single threaded. XXX |
343 | */ | |
3685c2a1 | 344 | spin_lock(&mp->m_sb_lock); |
1da177e4 LT |
345 | sbf = mp->m_sb.sb_qflags; |
346 | mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL; | |
3685c2a1 | 347 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
348 | |
349 | if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) { | |
350 | if (xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS)) { | |
351 | /* | |
352 | * We could only have been turning quotas off. | |
353 | * We aren't in very good shape actually because | |
354 | * the incore structures are convinced that quotas are | |
355 | * off, but the on disk superblock doesn't know that ! | |
356 | */ | |
357 | ASSERT(!(XFS_IS_QUOTA_RUNNING(mp))); | |
53487786 DC |
358 | xfs_alert(mp, "%s: Superblock update failed!", |
359 | __func__); | |
1da177e4 LT |
360 | } |
361 | } | |
362 | ||
363 | if (error) { | |
53487786 | 364 | xfs_warn(mp, "Failed to initialize disk quotas."); |
7d095257 | 365 | return; |
1da177e4 | 366 | } |
1da177e4 LT |
367 | } |
368 | ||
369 | /* | |
370 | * Called from the vfsops layer. | |
371 | */ | |
e57481dc | 372 | void |
1da177e4 LT |
373 | xfs_qm_unmount_quotas( |
374 | xfs_mount_t *mp) | |
375 | { | |
1da177e4 LT |
376 | /* |
377 | * Release the dquots that root inode, et al might be holding, | |
378 | * before we flush quotas and blow away the quotainfo structure. | |
379 | */ | |
380 | ASSERT(mp->m_rootip); | |
381 | xfs_qm_dqdetach(mp->m_rootip); | |
382 | if (mp->m_rbmip) | |
383 | xfs_qm_dqdetach(mp->m_rbmip); | |
384 | if (mp->m_rsumip) | |
385 | xfs_qm_dqdetach(mp->m_rsumip); | |
386 | ||
387 | /* | |
e57481dc | 388 | * Release the quota inodes. |
1da177e4 | 389 | */ |
1da177e4 | 390 | if (mp->m_quotainfo) { |
e57481dc CH |
391 | if (mp->m_quotainfo->qi_uquotaip) { |
392 | IRELE(mp->m_quotainfo->qi_uquotaip); | |
393 | mp->m_quotainfo->qi_uquotaip = NULL; | |
1da177e4 | 394 | } |
e57481dc CH |
395 | if (mp->m_quotainfo->qi_gquotaip) { |
396 | IRELE(mp->m_quotainfo->qi_gquotaip); | |
397 | mp->m_quotainfo->qi_gquotaip = NULL; | |
1da177e4 | 398 | } |
92f8ff73 CS |
399 | if (mp->m_quotainfo->qi_pquotaip) { |
400 | IRELE(mp->m_quotainfo->qi_pquotaip); | |
401 | mp->m_quotainfo->qi_pquotaip = NULL; | |
402 | } | |
1da177e4 | 403 | } |
1da177e4 LT |
404 | } |
405 | ||
1da177e4 LT |
406 | STATIC int |
407 | xfs_qm_dqattach_one( | |
408 | xfs_inode_t *ip, | |
409 | xfs_dqid_t id, | |
410 | uint type, | |
411 | uint doalloc, | |
1da177e4 LT |
412 | xfs_dquot_t *udqhint, /* hint */ |
413 | xfs_dquot_t **IO_idqpp) | |
414 | { | |
415 | xfs_dquot_t *dqp; | |
416 | int error; | |
417 | ||
579aa9ca | 418 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 419 | error = 0; |
8e9b6e7f | 420 | |
1da177e4 LT |
421 | /* |
422 | * See if we already have it in the inode itself. IO_idqpp is | |
423 | * &i_udquot or &i_gdquot. This made the code look weird, but | |
424 | * made the logic a lot simpler. | |
425 | */ | |
8e9b6e7f CH |
426 | dqp = *IO_idqpp; |
427 | if (dqp) { | |
0b1b213f | 428 | trace_xfs_dqattach_found(dqp); |
8e9b6e7f | 429 | return 0; |
1da177e4 LT |
430 | } |
431 | ||
432 | /* | |
433 | * udqhint is the i_udquot field in inode, and is non-NULL only | |
c8ad20ff | 434 | * when the type arg is group/project. Its purpose is to save a |
1da177e4 LT |
435 | * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside |
436 | * the user dquot. | |
437 | */ | |
8e9b6e7f CH |
438 | if (udqhint) { |
439 | ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ); | |
1da177e4 LT |
440 | xfs_dqlock(udqhint); |
441 | ||
8e9b6e7f CH |
442 | /* |
443 | * No need to take dqlock to look at the id. | |
444 | * | |
445 | * The ID can't change until it gets reclaimed, and it won't | |
446 | * be reclaimed as long as we have a ref from inode and we | |
447 | * hold the ilock. | |
448 | */ | |
92f8ff73 CS |
449 | if (type == XFS_DQ_GROUP) |
450 | dqp = udqhint->q_gdquot; | |
451 | else | |
452 | dqp = udqhint->q_pdquot; | |
8e9b6e7f | 453 | if (dqp && be32_to_cpu(dqp->q_core.d_id) == id) { |
8e9b6e7f | 454 | ASSERT(*IO_idqpp == NULL); |
8e9b6e7f | 455 | |
78e55892 | 456 | *IO_idqpp = xfs_qm_dqhold(dqp); |
1da177e4 | 457 | xfs_dqunlock(udqhint); |
8e9b6e7f | 458 | return 0; |
1da177e4 | 459 | } |
8e9b6e7f CH |
460 | |
461 | /* | |
462 | * We can't hold a dquot lock when we call the dqget code. | |
463 | * We'll deadlock in no time, because of (not conforming to) | |
464 | * lock ordering - the inodelock comes before any dquot lock, | |
465 | * and we may drop and reacquire the ilock in xfs_qm_dqget(). | |
466 | */ | |
1da177e4 | 467 | xfs_dqunlock(udqhint); |
8e9b6e7f CH |
468 | } |
469 | ||
1da177e4 LT |
470 | /* |
471 | * Find the dquot from somewhere. This bumps the | |
472 | * reference count of dquot and returns it locked. | |
473 | * This can return ENOENT if dquot didn't exist on | |
474 | * disk and we didn't ask it to allocate; | |
475 | * ESRCH if quotas got turned off suddenly. | |
476 | */ | |
db3e74b5 MH |
477 | error = xfs_qm_dqget(ip->i_mount, ip, id, type, |
478 | doalloc | XFS_QMOPT_DOWARN, &dqp); | |
8e9b6e7f CH |
479 | if (error) |
480 | return error; | |
1da177e4 | 481 | |
0b1b213f | 482 | trace_xfs_dqattach_get(dqp); |
8e9b6e7f | 483 | |
1da177e4 LT |
484 | /* |
485 | * dqget may have dropped and re-acquired the ilock, but it guarantees | |
486 | * that the dquot returned is the one that should go in the inode. | |
487 | */ | |
488 | *IO_idqpp = dqp; | |
8e9b6e7f CH |
489 | xfs_dqunlock(dqp); |
490 | return 0; | |
1da177e4 LT |
491 | } |
492 | ||
493 | ||
494 | /* | |
92f8ff73 CS |
495 | * Given a udquot and group/project type, attach the group/project |
496 | * dquot pointer to the udquot as a hint for future lookups. | |
1da177e4 LT |
497 | */ |
498 | STATIC void | |
92f8ff73 CS |
499 | xfs_qm_dqattach_hint( |
500 | struct xfs_inode *ip, | |
501 | int type) | |
1da177e4 | 502 | { |
92f8ff73 CS |
503 | struct xfs_dquot **dqhintp; |
504 | struct xfs_dquot *dqp; | |
505 | struct xfs_dquot *udq = ip->i_udquot; | |
506 | ||
507 | ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ); | |
1da177e4 | 508 | |
8e9b6e7f | 509 | xfs_dqlock(udq); |
1da177e4 | 510 | |
92f8ff73 CS |
511 | if (type == XFS_DQ_GROUP) { |
512 | dqp = ip->i_gdquot; | |
513 | dqhintp = &udq->q_gdquot; | |
514 | } else { | |
515 | dqp = ip->i_pdquot; | |
516 | dqhintp = &udq->q_pdquot; | |
517 | } | |
518 | ||
519 | if (*dqhintp) { | |
520 | struct xfs_dquot *tmp; | |
521 | ||
522 | if (*dqhintp == dqp) | |
ab680bb7 | 523 | goto done; |
1da177e4 | 524 | |
92f8ff73 CS |
525 | tmp = *dqhintp; |
526 | *dqhintp = NULL; | |
1da177e4 | 527 | xfs_qm_dqrele(tmp); |
1da177e4 | 528 | } |
8e9b6e7f | 529 | |
92f8ff73 | 530 | *dqhintp = xfs_qm_dqhold(dqp); |
ab680bb7 | 531 | done: |
8e9b6e7f | 532 | xfs_dqunlock(udq); |
1da177e4 LT |
533 | } |
534 | ||
b4d05e30 CH |
535 | static bool |
536 | xfs_qm_need_dqattach( | |
537 | struct xfs_inode *ip) | |
538 | { | |
539 | struct xfs_mount *mp = ip->i_mount; | |
540 | ||
541 | if (!XFS_IS_QUOTA_RUNNING(mp)) | |
542 | return false; | |
543 | if (!XFS_IS_QUOTA_ON(mp)) | |
544 | return false; | |
545 | if (!XFS_NOT_DQATTACHED(mp, ip)) | |
546 | return false; | |
9cad19d2 | 547 | if (xfs_is_quota_inode(&mp->m_sb, ip->i_ino)) |
b4d05e30 CH |
548 | return false; |
549 | return true; | |
550 | } | |
1da177e4 LT |
551 | |
552 | /* | |
c8ad20ff NS |
553 | * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON |
554 | * into account. | |
1da177e4 | 555 | * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed. |
1da177e4 LT |
556 | * Inode may get unlocked and relocked in here, and the caller must deal with |
557 | * the consequences. | |
558 | */ | |
559 | int | |
7d095257 | 560 | xfs_qm_dqattach_locked( |
1da177e4 LT |
561 | xfs_inode_t *ip, |
562 | uint flags) | |
563 | { | |
564 | xfs_mount_t *mp = ip->i_mount; | |
565 | uint nquotas = 0; | |
566 | int error = 0; | |
567 | ||
b4d05e30 | 568 | if (!xfs_qm_need_dqattach(ip)) |
014c2544 | 569 | return 0; |
1da177e4 | 570 | |
7d095257 | 571 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
572 | |
573 | if (XFS_IS_UQUOTA_ON(mp)) { | |
574 | error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER, | |
575 | flags & XFS_QMOPT_DQALLOC, | |
1da177e4 LT |
576 | NULL, &ip->i_udquot); |
577 | if (error) | |
578 | goto done; | |
579 | nquotas++; | |
580 | } | |
579aa9ca CH |
581 | |
582 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); | |
92f8ff73 CS |
583 | if (XFS_IS_GQUOTA_ON(mp)) { |
584 | error = xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, | |
1da177e4 | 585 | flags & XFS_QMOPT_DQALLOC, |
1da177e4 LT |
586 | ip->i_udquot, &ip->i_gdquot); |
587 | /* | |
588 | * Don't worry about the udquot that we may have | |
589 | * attached above. It'll get detached, if not already. | |
590 | */ | |
591 | if (error) | |
592 | goto done; | |
593 | nquotas++; | |
594 | } | |
595 | ||
92f8ff73 CS |
596 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
597 | if (XFS_IS_PQUOTA_ON(mp)) { | |
598 | error = xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ, | |
599 | flags & XFS_QMOPT_DQALLOC, | |
600 | ip->i_udquot, &ip->i_pdquot); | |
601 | /* | |
602 | * Don't worry about the udquot that we may have | |
603 | * attached above. It'll get detached, if not already. | |
604 | */ | |
605 | if (error) | |
606 | goto done; | |
607 | nquotas++; | |
608 | } | |
609 | ||
1da177e4 | 610 | /* |
92f8ff73 | 611 | * Attach this group/project quota to the user quota as a hint. |
1da177e4 LT |
612 | * This WON'T, in general, result in a thrash. |
613 | */ | |
92f8ff73 | 614 | if (nquotas > 1 && ip->i_udquot) { |
579aa9ca | 615 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
92f8ff73 CS |
616 | ASSERT(ip->i_gdquot || !XFS_IS_GQUOTA_ON(mp)); |
617 | ASSERT(ip->i_pdquot || !XFS_IS_PQUOTA_ON(mp)); | |
1da177e4 LT |
618 | |
619 | /* | |
ab680bb7 CH |
620 | * We do not have i_udquot locked at this point, but this check |
621 | * is OK since we don't depend on the i_gdquot to be accurate | |
622 | * 100% all the time. It is just a hint, and this will | |
623 | * succeed in general. | |
1da177e4 | 624 | */ |
ab680bb7 | 625 | if (ip->i_udquot->q_gdquot != ip->i_gdquot) |
92f8ff73 CS |
626 | xfs_qm_dqattach_hint(ip, XFS_DQ_GROUP); |
627 | ||
628 | if (ip->i_udquot->q_pdquot != ip->i_pdquot) | |
629 | xfs_qm_dqattach_hint(ip, XFS_DQ_PROJ); | |
1da177e4 LT |
630 | } |
631 | ||
7d095257 | 632 | done: |
ea15ab3c CH |
633 | #ifdef DEBUG |
634 | if (!error) { | |
1da177e4 LT |
635 | if (XFS_IS_UQUOTA_ON(mp)) |
636 | ASSERT(ip->i_udquot); | |
92f8ff73 | 637 | if (XFS_IS_GQUOTA_ON(mp)) |
1da177e4 | 638 | ASSERT(ip->i_gdquot); |
92f8ff73 CS |
639 | if (XFS_IS_PQUOTA_ON(mp)) |
640 | ASSERT(ip->i_pdquot); | |
1da177e4 | 641 | } |
7d095257 | 642 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 643 | #endif |
7d095257 CH |
644 | return error; |
645 | } | |
1da177e4 | 646 | |
7d095257 CH |
647 | int |
648 | xfs_qm_dqattach( | |
649 | struct xfs_inode *ip, | |
650 | uint flags) | |
651 | { | |
652 | int error; | |
653 | ||
b4d05e30 CH |
654 | if (!xfs_qm_need_dqattach(ip)) |
655 | return 0; | |
656 | ||
7d095257 CH |
657 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
658 | error = xfs_qm_dqattach_locked(ip, flags); | |
659 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1da177e4 | 660 | |
014c2544 | 661 | return error; |
1da177e4 LT |
662 | } |
663 | ||
664 | /* | |
665 | * Release dquots (and their references) if any. | |
666 | * The inode should be locked EXCL except when this's called by | |
667 | * xfs_ireclaim. | |
668 | */ | |
669 | void | |
670 | xfs_qm_dqdetach( | |
671 | xfs_inode_t *ip) | |
672 | { | |
92f8ff73 | 673 | if (!(ip->i_udquot || ip->i_gdquot || ip->i_pdquot)) |
1da177e4 LT |
674 | return; |
675 | ||
0b1b213f CH |
676 | trace_xfs_dquot_dqdetach(ip); |
677 | ||
9cad19d2 | 678 | ASSERT(!xfs_is_quota_inode(&ip->i_mount->m_sb, ip->i_ino)); |
1da177e4 LT |
679 | if (ip->i_udquot) { |
680 | xfs_qm_dqrele(ip->i_udquot); | |
681 | ip->i_udquot = NULL; | |
682 | } | |
683 | if (ip->i_gdquot) { | |
684 | xfs_qm_dqrele(ip->i_gdquot); | |
685 | ip->i_gdquot = NULL; | |
686 | } | |
92f8ff73 CS |
687 | if (ip->i_pdquot) { |
688 | xfs_qm_dqrele(ip->i_pdquot); | |
689 | ip->i_pdquot = NULL; | |
690 | } | |
1da177e4 LT |
691 | } |
692 | ||
cd56a39a DC |
693 | struct xfs_qm_isolate { |
694 | struct list_head buffers; | |
695 | struct list_head dispose; | |
696 | }; | |
697 | ||
698 | static enum lru_status | |
699 | xfs_qm_dquot_isolate( | |
700 | struct list_head *item, | |
701 | spinlock_t *lru_lock, | |
702 | void *arg) | |
703 | { | |
704 | struct xfs_dquot *dqp = container_of(item, | |
705 | struct xfs_dquot, q_lru); | |
706 | struct xfs_qm_isolate *isol = arg; | |
707 | ||
708 | if (!xfs_dqlock_nowait(dqp)) | |
709 | goto out_miss_busy; | |
710 | ||
711 | /* | |
712 | * This dquot has acquired a reference in the meantime remove it from | |
713 | * the freelist and try again. | |
714 | */ | |
715 | if (dqp->q_nrefs) { | |
716 | xfs_dqunlock(dqp); | |
717 | XFS_STATS_INC(xs_qm_dqwants); | |
718 | ||
719 | trace_xfs_dqreclaim_want(dqp); | |
720 | list_del_init(&dqp->q_lru); | |
721 | XFS_STATS_DEC(xs_qm_dquot_unused); | |
35163417 | 722 | return LRU_REMOVED; |
cd56a39a DC |
723 | } |
724 | ||
725 | /* | |
726 | * If the dquot is dirty, flush it. If it's already being flushed, just | |
727 | * skip it so there is time for the IO to complete before we try to | |
728 | * reclaim it again on the next LRU pass. | |
729 | */ | |
730 | if (!xfs_dqflock_nowait(dqp)) { | |
731 | xfs_dqunlock(dqp); | |
732 | goto out_miss_busy; | |
733 | } | |
734 | ||
735 | if (XFS_DQ_IS_DIRTY(dqp)) { | |
736 | struct xfs_buf *bp = NULL; | |
737 | int error; | |
738 | ||
739 | trace_xfs_dqreclaim_dirty(dqp); | |
740 | ||
741 | /* we have to drop the LRU lock to flush the dquot */ | |
742 | spin_unlock(lru_lock); | |
743 | ||
744 | error = xfs_qm_dqflush(dqp, &bp); | |
745 | if (error) { | |
746 | xfs_warn(dqp->q_mount, "%s: dquot %p flush failed", | |
747 | __func__, dqp); | |
748 | goto out_unlock_dirty; | |
749 | } | |
750 | ||
751 | xfs_buf_delwri_queue(bp, &isol->buffers); | |
752 | xfs_buf_relse(bp); | |
753 | goto out_unlock_dirty; | |
754 | } | |
755 | xfs_dqfunlock(dqp); | |
756 | ||
757 | /* | |
758 | * Prevent lookups now that we are past the point of no return. | |
759 | */ | |
760 | dqp->dq_flags |= XFS_DQ_FREEING; | |
761 | xfs_dqunlock(dqp); | |
762 | ||
763 | ASSERT(dqp->q_nrefs == 0); | |
764 | list_move_tail(&dqp->q_lru, &isol->dispose); | |
765 | XFS_STATS_DEC(xs_qm_dquot_unused); | |
766 | trace_xfs_dqreclaim_done(dqp); | |
767 | XFS_STATS_INC(xs_qm_dqreclaims); | |
35163417 | 768 | return LRU_REMOVED; |
cd56a39a DC |
769 | |
770 | out_miss_busy: | |
771 | trace_xfs_dqreclaim_busy(dqp); | |
772 | XFS_STATS_INC(xs_qm_dqreclaim_misses); | |
35163417 | 773 | return LRU_SKIP; |
cd56a39a DC |
774 | |
775 | out_unlock_dirty: | |
776 | trace_xfs_dqreclaim_busy(dqp); | |
777 | XFS_STATS_INC(xs_qm_dqreclaim_misses); | |
35163417 DC |
778 | xfs_dqunlock(dqp); |
779 | spin_lock(lru_lock); | |
780 | return LRU_RETRY; | |
cd56a39a DC |
781 | } |
782 | ||
2f5b56f8 | 783 | static unsigned long |
cd56a39a DC |
784 | xfs_qm_shrink_scan( |
785 | struct shrinker *shrink, | |
786 | struct shrink_control *sc) | |
787 | { | |
788 | struct xfs_quotainfo *qi = container_of(shrink, | |
789 | struct xfs_quotainfo, qi_shrinker); | |
790 | struct xfs_qm_isolate isol; | |
2f5b56f8 | 791 | unsigned long freed; |
cd56a39a DC |
792 | int error; |
793 | unsigned long nr_to_scan = sc->nr_to_scan; | |
794 | ||
795 | if ((sc->gfp_mask & (__GFP_FS|__GFP_WAIT)) != (__GFP_FS|__GFP_WAIT)) | |
796 | return 0; | |
797 | ||
798 | INIT_LIST_HEAD(&isol.buffers); | |
799 | INIT_LIST_HEAD(&isol.dispose); | |
800 | ||
801 | freed = list_lru_walk_node(&qi->qi_lru, sc->nid, xfs_qm_dquot_isolate, &isol, | |
802 | &nr_to_scan); | |
803 | ||
804 | error = xfs_buf_delwri_submit(&isol.buffers); | |
805 | if (error) | |
806 | xfs_warn(NULL, "%s: dquot reclaim failed", __func__); | |
807 | ||
808 | while (!list_empty(&isol.dispose)) { | |
809 | struct xfs_dquot *dqp; | |
810 | ||
811 | dqp = list_first_entry(&isol.dispose, struct xfs_dquot, q_lru); | |
812 | list_del_init(&dqp->q_lru); | |
813 | xfs_qm_dqfree_one(dqp); | |
814 | } | |
815 | ||
816 | return freed; | |
817 | } | |
818 | ||
2f5b56f8 | 819 | static unsigned long |
cd56a39a DC |
820 | xfs_qm_shrink_count( |
821 | struct shrinker *shrink, | |
822 | struct shrink_control *sc) | |
823 | { | |
824 | struct xfs_quotainfo *qi = container_of(shrink, | |
825 | struct xfs_quotainfo, qi_shrinker); | |
826 | ||
827 | return list_lru_count_node(&qi->qi_lru, sc->nid); | |
828 | } | |
829 | ||
1da177e4 LT |
830 | /* |
831 | * This initializes all the quota information that's kept in the | |
832 | * mount structure | |
833 | */ | |
ba0f32d4 | 834 | STATIC int |
1da177e4 LT |
835 | xfs_qm_init_quotainfo( |
836 | xfs_mount_t *mp) | |
837 | { | |
838 | xfs_quotainfo_t *qinf; | |
839 | int error; | |
840 | xfs_dquot_t *dqp; | |
841 | ||
842 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
843 | ||
1da177e4 LT |
844 | qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP); |
845 | ||
5ca302c8 GC |
846 | if ((error = list_lru_init(&qinf->qi_lru))) { |
847 | kmem_free(qinf); | |
848 | mp->m_quotainfo = NULL; | |
849 | return error; | |
850 | } | |
851 | ||
1da177e4 LT |
852 | /* |
853 | * See if quotainodes are setup, and if not, allocate them, | |
854 | * and change the superblock accordingly. | |
855 | */ | |
856 | if ((error = xfs_qm_init_quotainos(mp))) { | |
5ca302c8 | 857 | list_lru_destroy(&qinf->qi_lru); |
f0e2d93c | 858 | kmem_free(qinf); |
1da177e4 | 859 | mp->m_quotainfo = NULL; |
014c2544 | 860 | return error; |
1da177e4 LT |
861 | } |
862 | ||
9f920f11 CH |
863 | INIT_RADIX_TREE(&qinf->qi_uquota_tree, GFP_NOFS); |
864 | INIT_RADIX_TREE(&qinf->qi_gquota_tree, GFP_NOFS); | |
92f8ff73 | 865 | INIT_RADIX_TREE(&qinf->qi_pquota_tree, GFP_NOFS); |
9f920f11 CH |
866 | mutex_init(&qinf->qi_tree_lock); |
867 | ||
1da177e4 | 868 | /* mutex used to serialize quotaoffs */ |
794ee1ba | 869 | mutex_init(&qinf->qi_quotaofflock); |
1da177e4 LT |
870 | |
871 | /* Precalc some constants */ | |
872 | qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
9aede1d8 | 873 | qinf->qi_dqperchunk = xfs_calc_dquots_per_chunk(mp, |
3fe58f30 | 874 | qinf->qi_dqchunklen); |
1da177e4 LT |
875 | |
876 | mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); | |
877 | ||
878 | /* | |
879 | * We try to get the limits from the superuser's limits fields. | |
880 | * This is quite hacky, but it is standard quota practice. | |
7ae44407 | 881 | * |
1da177e4 LT |
882 | * We look at the USR dquot with id == 0 first, but if user quotas |
883 | * are not enabled we goto the GRP dquot with id == 0. | |
884 | * We don't really care to keep separate default limits for user | |
885 | * and group quotas, at least not at this point. | |
7ae44407 CH |
886 | * |
887 | * Since we may not have done a quotacheck by this point, just read | |
888 | * the dquot without attaching it to any hashtables or lists. | |
1da177e4 | 889 | */ |
7ae44407 CH |
890 | error = xfs_qm_dqread(mp, 0, |
891 | XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : | |
892 | (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP : | |
893 | XFS_DQ_PROJ), | |
894 | XFS_QMOPT_DOWARN, &dqp); | |
895 | if (!error) { | |
1da177e4 LT |
896 | xfs_disk_dquot_t *ddqp = &dqp->q_core; |
897 | ||
898 | /* | |
899 | * The warnings and timers set the grace period given to | |
900 | * a user or group before he or she can not perform any | |
901 | * more writing. If it is zero, a default is used. | |
902 | */ | |
1149d96a CH |
903 | qinf->qi_btimelimit = ddqp->d_btimer ? |
904 | be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT; | |
905 | qinf->qi_itimelimit = ddqp->d_itimer ? | |
906 | be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT; | |
907 | qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ? | |
908 | be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT; | |
909 | qinf->qi_bwarnlimit = ddqp->d_bwarns ? | |
910 | be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT; | |
911 | qinf->qi_iwarnlimit = ddqp->d_iwarns ? | |
912 | be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT; | |
913 | qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ? | |
914 | be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT; | |
915 | qinf->qi_bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit); | |
916 | qinf->qi_bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit); | |
917 | qinf->qi_ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit); | |
918 | qinf->qi_isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit); | |
919 | qinf->qi_rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit); | |
920 | qinf->qi_rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit); | |
1da177e4 | 921 | |
1da177e4 LT |
922 | xfs_qm_dqdestroy(dqp); |
923 | } else { | |
924 | qinf->qi_btimelimit = XFS_QM_BTIMELIMIT; | |
925 | qinf->qi_itimelimit = XFS_QM_ITIMELIMIT; | |
926 | qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT; | |
927 | qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT; | |
928 | qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT; | |
06d10dd9 | 929 | qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT; |
1da177e4 LT |
930 | } |
931 | ||
cd56a39a DC |
932 | qinf->qi_shrinker.count_objects = xfs_qm_shrink_count; |
933 | qinf->qi_shrinker.scan_objects = xfs_qm_shrink_scan; | |
f8739c3c | 934 | qinf->qi_shrinker.seeks = DEFAULT_SEEKS; |
cd56a39a | 935 | qinf->qi_shrinker.flags = SHRINKER_NUMA_AWARE; |
f8739c3c | 936 | register_shrinker(&qinf->qi_shrinker); |
014c2544 | 937 | return 0; |
1da177e4 LT |
938 | } |
939 | ||
940 | ||
941 | /* | |
942 | * Gets called when unmounting a filesystem or when all quotas get | |
943 | * turned off. | |
944 | * This purges the quota inodes, destroys locks and frees itself. | |
945 | */ | |
946 | void | |
947 | xfs_qm_destroy_quotainfo( | |
948 | xfs_mount_t *mp) | |
949 | { | |
950 | xfs_quotainfo_t *qi; | |
951 | ||
952 | qi = mp->m_quotainfo; | |
953 | ASSERT(qi != NULL); | |
1da177e4 | 954 | |
f8739c3c | 955 | unregister_shrinker(&qi->qi_shrinker); |
f5e1dd34 | 956 | list_lru_destroy(&qi->qi_lru); |
f8739c3c | 957 | |
1da177e4 | 958 | if (qi->qi_uquotaip) { |
26cc0021 | 959 | IRELE(qi->qi_uquotaip); |
1da177e4 LT |
960 | qi->qi_uquotaip = NULL; /* paranoia */ |
961 | } | |
962 | if (qi->qi_gquotaip) { | |
26cc0021 | 963 | IRELE(qi->qi_gquotaip); |
1da177e4 LT |
964 | qi->qi_gquotaip = NULL; |
965 | } | |
92f8ff73 CS |
966 | if (qi->qi_pquotaip) { |
967 | IRELE(qi->qi_pquotaip); | |
968 | qi->qi_pquotaip = NULL; | |
969 | } | |
1da177e4 | 970 | mutex_destroy(&qi->qi_quotaofflock); |
f0e2d93c | 971 | kmem_free(qi); |
1da177e4 LT |
972 | mp->m_quotainfo = NULL; |
973 | } | |
974 | ||
1da177e4 LT |
975 | /* |
976 | * Create an inode and return with a reference already taken, but unlocked | |
977 | * This is how we create quota inodes | |
978 | */ | |
979 | STATIC int | |
980 | xfs_qm_qino_alloc( | |
981 | xfs_mount_t *mp, | |
982 | xfs_inode_t **ip, | |
983 | __int64_t sbfields, | |
984 | uint flags) | |
985 | { | |
986 | xfs_trans_t *tp; | |
987 | int error; | |
1da177e4 LT |
988 | int committed; |
989 | ||
d892d586 CS |
990 | *ip = NULL; |
991 | /* | |
992 | * With superblock that doesn't have separate pquotino, we | |
993 | * share an inode between gquota and pquota. If the on-disk | |
994 | * superblock has GQUOTA and the filesystem is now mounted | |
995 | * with PQUOTA, just use sb_gquotino for sb_pquotino and | |
996 | * vice-versa. | |
997 | */ | |
998 | if (!xfs_sb_version_has_pquotino(&mp->m_sb) && | |
999 | (flags & (XFS_QMOPT_PQUOTA|XFS_QMOPT_GQUOTA))) { | |
1000 | xfs_ino_t ino = NULLFSINO; | |
1001 | ||
1002 | if ((flags & XFS_QMOPT_PQUOTA) && | |
1003 | (mp->m_sb.sb_gquotino != NULLFSINO)) { | |
1004 | ino = mp->m_sb.sb_gquotino; | |
1005 | ASSERT(mp->m_sb.sb_pquotino == NULLFSINO); | |
1006 | } else if ((flags & XFS_QMOPT_GQUOTA) && | |
1007 | (mp->m_sb.sb_pquotino != NULLFSINO)) { | |
1008 | ino = mp->m_sb.sb_pquotino; | |
1009 | ASSERT(mp->m_sb.sb_gquotino == NULLFSINO); | |
1010 | } | |
1011 | if (ino != NULLFSINO) { | |
1012 | error = xfs_iget(mp, NULL, ino, 0, 0, ip); | |
1013 | if (error) | |
1014 | return error; | |
1015 | mp->m_sb.sb_gquotino = NULLFSINO; | |
1016 | mp->m_sb.sb_pquotino = NULLFSINO; | |
1017 | } | |
1018 | } | |
1019 | ||
061f7209 | 1020 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE); |
3d3c8b52 JL |
1021 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_create, |
1022 | XFS_QM_QINOCREATE_SPACE_RES(mp), 0); | |
1023 | if (error) { | |
1da177e4 | 1024 | xfs_trans_cancel(tp, 0); |
014c2544 | 1025 | return error; |
1da177e4 | 1026 | } |
1da177e4 | 1027 | |
d892d586 CS |
1028 | if (!*ip) { |
1029 | error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip, | |
1030 | &committed); | |
1031 | if (error) { | |
1032 | xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | | |
1033 | XFS_TRANS_ABORT); | |
1034 | return error; | |
1035 | } | |
1da177e4 LT |
1036 | } |
1037 | ||
1da177e4 LT |
1038 | /* |
1039 | * Make the changes in the superblock, and log those too. | |
1040 | * sbfields arg may contain fields other than *QUOTINO; | |
1041 | * VERSIONNUM for example. | |
1042 | */ | |
3685c2a1 | 1043 | spin_lock(&mp->m_sb_lock); |
1da177e4 | 1044 | if (flags & XFS_QMOPT_SBVERSION) { |
62118709 | 1045 | ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); |
1da177e4 | 1046 | ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | |
d892d586 CS |
1047 | XFS_SB_GQUOTINO | XFS_SB_PQUOTINO | XFS_SB_QFLAGS)) == |
1048 | (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1049 | XFS_SB_GQUOTINO | XFS_SB_PQUOTINO | | |
1050 | XFS_SB_QFLAGS)); | |
1da177e4 | 1051 | |
62118709 | 1052 | xfs_sb_version_addquota(&mp->m_sb); |
1da177e4 LT |
1053 | mp->m_sb.sb_uquotino = NULLFSINO; |
1054 | mp->m_sb.sb_gquotino = NULLFSINO; | |
d892d586 | 1055 | mp->m_sb.sb_pquotino = NULLFSINO; |
1da177e4 | 1056 | |
d892d586 CS |
1057 | /* qflags will get updated fully _after_ quotacheck */ |
1058 | mp->m_sb.sb_qflags = mp->m_qflags & XFS_ALL_QUOTA_ACCT; | |
1da177e4 LT |
1059 | } |
1060 | if (flags & XFS_QMOPT_UQUOTA) | |
1061 | mp->m_sb.sb_uquotino = (*ip)->i_ino; | |
d892d586 | 1062 | else if (flags & XFS_QMOPT_GQUOTA) |
1da177e4 | 1063 | mp->m_sb.sb_gquotino = (*ip)->i_ino; |
d892d586 CS |
1064 | else |
1065 | mp->m_sb.sb_pquotino = (*ip)->i_ino; | |
3685c2a1 | 1066 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
1067 | xfs_mod_sb(tp, sbfields); |
1068 | ||
1c72bf90 | 1069 | if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) { |
53487786 | 1070 | xfs_alert(mp, "%s failed (error %d)!", __func__, error); |
014c2544 | 1071 | return error; |
1da177e4 | 1072 | } |
014c2544 | 1073 | return 0; |
1da177e4 LT |
1074 | } |
1075 | ||
1076 | ||
5b139738 | 1077 | STATIC void |
1da177e4 LT |
1078 | xfs_qm_reset_dqcounts( |
1079 | xfs_mount_t *mp, | |
1080 | xfs_buf_t *bp, | |
1081 | xfs_dqid_t id, | |
1082 | uint type) | |
1083 | { | |
6fcdc59d | 1084 | struct xfs_dqblk *dqb; |
1da177e4 LT |
1085 | int j; |
1086 | ||
0b1b213f CH |
1087 | trace_xfs_reset_dqcounts(bp, _RET_IP_); |
1088 | ||
1da177e4 LT |
1089 | /* |
1090 | * Reset all counters and timers. They'll be | |
1091 | * started afresh by xfs_qm_quotacheck. | |
1092 | */ | |
1093 | #ifdef DEBUG | |
1094 | j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
1095 | do_div(j, sizeof(xfs_dqblk_t)); | |
8a7b8a89 | 1096 | ASSERT(mp->m_quotainfo->qi_dqperchunk == j); |
1da177e4 | 1097 | #endif |
6fcdc59d | 1098 | dqb = bp->b_addr; |
8a7b8a89 | 1099 | for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { |
6fcdc59d DC |
1100 | struct xfs_disk_dquot *ddq; |
1101 | ||
1102 | ddq = (struct xfs_disk_dquot *)&dqb[j]; | |
1103 | ||
1da177e4 LT |
1104 | /* |
1105 | * Do a sanity check, and if needed, repair the dqblk. Don't | |
1106 | * output any warnings because it's perfectly possible to | |
9aede1d8 | 1107 | * find uninitialised dquot blks. See comment in xfs_dqcheck. |
1da177e4 | 1108 | */ |
9aede1d8 DC |
1109 | xfs_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR, |
1110 | "xfs_quotacheck"); | |
1149d96a CH |
1111 | ddq->d_bcount = 0; |
1112 | ddq->d_icount = 0; | |
1113 | ddq->d_rtbcount = 0; | |
1114 | ddq->d_btimer = 0; | |
1115 | ddq->d_itimer = 0; | |
1116 | ddq->d_rtbtimer = 0; | |
1117 | ddq->d_bwarns = 0; | |
1118 | ddq->d_iwarns = 0; | |
1119 | ddq->d_rtbwarns = 0; | |
6fcdc59d DC |
1120 | |
1121 | if (xfs_sb_version_hascrc(&mp->m_sb)) { | |
1122 | xfs_update_cksum((char *)&dqb[j], | |
1123 | sizeof(struct xfs_dqblk), | |
1124 | XFS_DQUOT_CRC_OFF); | |
1125 | } | |
1da177e4 | 1126 | } |
1da177e4 LT |
1127 | } |
1128 | ||
1129 | STATIC int | |
1130 | xfs_qm_dqiter_bufs( | |
43ff2122 CH |
1131 | struct xfs_mount *mp, |
1132 | xfs_dqid_t firstid, | |
1133 | xfs_fsblock_t bno, | |
1134 | xfs_filblks_t blkcnt, | |
1135 | uint flags, | |
1136 | struct list_head *buffer_list) | |
1da177e4 | 1137 | { |
43ff2122 CH |
1138 | struct xfs_buf *bp; |
1139 | int error; | |
1140 | int type; | |
1da177e4 LT |
1141 | |
1142 | ASSERT(blkcnt > 0); | |
c8ad20ff NS |
1143 | type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER : |
1144 | (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP); | |
1da177e4 LT |
1145 | error = 0; |
1146 | ||
1147 | /* | |
1148 | * Blkcnt arg can be a very big number, and might even be | |
1149 | * larger than the log itself. So, we have to break it up into | |
1150 | * manageable-sized transactions. | |
1151 | * Note that we don't start a permanent transaction here; we might | |
1152 | * not be able to get a log reservation for the whole thing up front, | |
1153 | * and we don't really care to either, because we just discard | |
1154 | * everything if we were to crash in the middle of this loop. | |
1155 | */ | |
1156 | while (blkcnt--) { | |
1157 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1158 | XFS_FSB_TO_DADDR(mp, bno), | |
c6319198 | 1159 | mp->m_quotainfo->qi_dqchunklen, 0, &bp, |
1813dd64 | 1160 | &xfs_dquot_buf_ops); |
1da177e4 | 1161 | |
3fe58f30 | 1162 | /* |
6fcdc59d DC |
1163 | * CRC and validation errors will return a EFSCORRUPTED here. If |
1164 | * this occurs, re-read without CRC validation so that we can | |
1165 | * repair the damage via xfs_qm_reset_dqcounts(). This process | |
1166 | * will leave a trace in the log indicating corruption has | |
1167 | * been detected. | |
3fe58f30 | 1168 | */ |
6fcdc59d DC |
1169 | if (error == EFSCORRUPTED) { |
1170 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1171 | XFS_FSB_TO_DADDR(mp, bno), | |
1172 | mp->m_quotainfo->qi_dqchunklen, 0, &bp, | |
1173 | NULL); | |
1174 | } | |
1175 | ||
1176 | if (error) | |
1177 | break; | |
1178 | ||
5b139738 | 1179 | xfs_qm_reset_dqcounts(mp, bp, firstid, type); |
43ff2122 | 1180 | xfs_buf_delwri_queue(bp, buffer_list); |
61551f1e | 1181 | xfs_buf_relse(bp); |
6fcdc59d DC |
1182 | |
1183 | /* goto the next block. */ | |
1da177e4 | 1184 | bno++; |
8a7b8a89 | 1185 | firstid += mp->m_quotainfo->qi_dqperchunk; |
1da177e4 | 1186 | } |
43ff2122 | 1187 | |
014c2544 | 1188 | return error; |
1da177e4 LT |
1189 | } |
1190 | ||
1191 | /* | |
c8ad20ff | 1192 | * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a |
1da177e4 LT |
1193 | * caller supplied function for every chunk of dquots that we find. |
1194 | */ | |
1195 | STATIC int | |
1196 | xfs_qm_dqiterate( | |
43ff2122 CH |
1197 | struct xfs_mount *mp, |
1198 | struct xfs_inode *qip, | |
1199 | uint flags, | |
1200 | struct list_head *buffer_list) | |
1da177e4 | 1201 | { |
43ff2122 | 1202 | struct xfs_bmbt_irec *map; |
1da177e4 LT |
1203 | int i, nmaps; /* number of map entries */ |
1204 | int error; /* return value */ | |
1205 | xfs_fileoff_t lblkno; | |
1206 | xfs_filblks_t maxlblkcnt; | |
1207 | xfs_dqid_t firstid; | |
1208 | xfs_fsblock_t rablkno; | |
1209 | xfs_filblks_t rablkcnt; | |
1210 | ||
1211 | error = 0; | |
1212 | /* | |
c41564b5 | 1213 | * This looks racy, but we can't keep an inode lock across a |
1da177e4 LT |
1214 | * trans_reserve. But, this gets called during quotacheck, and that |
1215 | * happens only at mount time which is single threaded. | |
1216 | */ | |
1217 | if (qip->i_d.di_nblocks == 0) | |
014c2544 | 1218 | return 0; |
1da177e4 LT |
1219 | |
1220 | map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP); | |
1221 | ||
1222 | lblkno = 0; | |
32972383 | 1223 | maxlblkcnt = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes); |
1da177e4 LT |
1224 | do { |
1225 | nmaps = XFS_DQITER_MAP_SIZE; | |
1226 | /* | |
1227 | * We aren't changing the inode itself. Just changing | |
1228 | * some of its data. No new blocks are added here, and | |
1229 | * the inode is never added to the transaction. | |
1230 | */ | |
1231 | xfs_ilock(qip, XFS_ILOCK_SHARED); | |
5c8ed202 DC |
1232 | error = xfs_bmapi_read(qip, lblkno, maxlblkcnt - lblkno, |
1233 | map, &nmaps, 0); | |
1da177e4 LT |
1234 | xfs_iunlock(qip, XFS_ILOCK_SHARED); |
1235 | if (error) | |
1236 | break; | |
1237 | ||
1238 | ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); | |
1239 | for (i = 0; i < nmaps; i++) { | |
1240 | ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); | |
1241 | ASSERT(map[i].br_blockcount); | |
1242 | ||
1243 | ||
1244 | lblkno += map[i].br_blockcount; | |
1245 | ||
1246 | if (map[i].br_startblock == HOLESTARTBLOCK) | |
1247 | continue; | |
1248 | ||
1249 | firstid = (xfs_dqid_t) map[i].br_startoff * | |
8a7b8a89 | 1250 | mp->m_quotainfo->qi_dqperchunk; |
1da177e4 LT |
1251 | /* |
1252 | * Do a read-ahead on the next extent. | |
1253 | */ | |
1254 | if ((i+1 < nmaps) && | |
1255 | (map[i+1].br_startblock != HOLESTARTBLOCK)) { | |
1256 | rablkcnt = map[i+1].br_blockcount; | |
1257 | rablkno = map[i+1].br_startblock; | |
1258 | while (rablkcnt--) { | |
1a1a3e97 | 1259 | xfs_buf_readahead(mp->m_ddev_targp, |
1da177e4 | 1260 | XFS_FSB_TO_DADDR(mp, rablkno), |
c3f8fc73 DC |
1261 | mp->m_quotainfo->qi_dqchunklen, |
1262 | NULL); | |
1da177e4 LT |
1263 | rablkno++; |
1264 | } | |
1265 | } | |
1266 | /* | |
1267 | * Iterate thru all the blks in the extent and | |
1268 | * reset the counters of all the dquots inside them. | |
1269 | */ | |
43ff2122 CH |
1270 | error = xfs_qm_dqiter_bufs(mp, firstid, |
1271 | map[i].br_startblock, | |
1272 | map[i].br_blockcount, | |
1273 | flags, buffer_list); | |
1274 | if (error) | |
1275 | goto out; | |
1da177e4 | 1276 | } |
1da177e4 LT |
1277 | } while (nmaps > 0); |
1278 | ||
43ff2122 | 1279 | out: |
f0e2d93c | 1280 | kmem_free(map); |
014c2544 | 1281 | return error; |
1da177e4 LT |
1282 | } |
1283 | ||
1284 | /* | |
1285 | * Called by dqusage_adjust in doing a quotacheck. | |
52fda114 CH |
1286 | * |
1287 | * Given the inode, and a dquot id this updates both the incore dqout as well | |
1288 | * as the buffer copy. This is so that once the quotacheck is done, we can | |
1289 | * just log all the buffers, as opposed to logging numerous updates to | |
1290 | * individual dquots. | |
1da177e4 | 1291 | */ |
52fda114 | 1292 | STATIC int |
1da177e4 | 1293 | xfs_qm_quotacheck_dqadjust( |
52fda114 CH |
1294 | struct xfs_inode *ip, |
1295 | xfs_dqid_t id, | |
1296 | uint type, | |
1da177e4 LT |
1297 | xfs_qcnt_t nblks, |
1298 | xfs_qcnt_t rtblks) | |
1299 | { | |
52fda114 CH |
1300 | struct xfs_mount *mp = ip->i_mount; |
1301 | struct xfs_dquot *dqp; | |
1302 | int error; | |
1303 | ||
1304 | error = xfs_qm_dqget(mp, ip, id, type, | |
1305 | XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp); | |
1306 | if (error) { | |
1307 | /* | |
1308 | * Shouldn't be able to turn off quotas here. | |
1309 | */ | |
1310 | ASSERT(error != ESRCH); | |
1311 | ASSERT(error != ENOENT); | |
1312 | return error; | |
1313 | } | |
0b1b213f CH |
1314 | |
1315 | trace_xfs_dqadjust(dqp); | |
1316 | ||
1da177e4 LT |
1317 | /* |
1318 | * Adjust the inode count and the block count to reflect this inode's | |
1319 | * resource usage. | |
1320 | */ | |
413d57c9 | 1321 | be64_add_cpu(&dqp->q_core.d_icount, 1); |
1da177e4 LT |
1322 | dqp->q_res_icount++; |
1323 | if (nblks) { | |
413d57c9 | 1324 | be64_add_cpu(&dqp->q_core.d_bcount, nblks); |
1da177e4 LT |
1325 | dqp->q_res_bcount += nblks; |
1326 | } | |
1327 | if (rtblks) { | |
413d57c9 | 1328 | be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks); |
1da177e4 LT |
1329 | dqp->q_res_rtbcount += rtblks; |
1330 | } | |
1331 | ||
1332 | /* | |
1333 | * Set default limits, adjust timers (since we changed usages) | |
191f8488 CH |
1334 | * |
1335 | * There are no timers for the default values set in the root dquot. | |
1da177e4 | 1336 | */ |
191f8488 | 1337 | if (dqp->q_core.d_id) { |
4b6eae2e | 1338 | xfs_qm_adjust_dqlimits(mp, dqp); |
52fda114 | 1339 | xfs_qm_adjust_dqtimers(mp, &dqp->q_core); |
1da177e4 LT |
1340 | } |
1341 | ||
1342 | dqp->dq_flags |= XFS_DQ_DIRTY; | |
52fda114 CH |
1343 | xfs_qm_dqput(dqp); |
1344 | return 0; | |
1da177e4 LT |
1345 | } |
1346 | ||
1347 | STATIC int | |
1348 | xfs_qm_get_rtblks( | |
1349 | xfs_inode_t *ip, | |
1350 | xfs_qcnt_t *O_rtblks) | |
1351 | { | |
1352 | xfs_filblks_t rtblks; /* total rt blks */ | |
4eea22f0 | 1353 | xfs_extnum_t idx; /* extent record index */ |
1da177e4 LT |
1354 | xfs_ifork_t *ifp; /* inode fork pointer */ |
1355 | xfs_extnum_t nextents; /* number of extent entries */ | |
1da177e4 LT |
1356 | int error; |
1357 | ||
1358 | ASSERT(XFS_IS_REALTIME_INODE(ip)); | |
1359 | ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); | |
1360 | if (!(ifp->if_flags & XFS_IFEXTENTS)) { | |
1361 | if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK))) | |
014c2544 | 1362 | return error; |
1da177e4 LT |
1363 | } |
1364 | rtblks = 0; | |
4eea22f0 | 1365 | nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); |
a6f64d4a CH |
1366 | for (idx = 0; idx < nextents; idx++) |
1367 | rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx)); | |
1da177e4 | 1368 | *O_rtblks = (xfs_qcnt_t)rtblks; |
014c2544 | 1369 | return 0; |
1da177e4 LT |
1370 | } |
1371 | ||
1372 | /* | |
1373 | * callback routine supplied to bulkstat(). Given an inumber, find its | |
1374 | * dquots and update them to account for resources taken by that inode. | |
1375 | */ | |
1376 | /* ARGSUSED */ | |
1377 | STATIC int | |
1378 | xfs_qm_dqusage_adjust( | |
1379 | xfs_mount_t *mp, /* mount point for filesystem */ | |
1380 | xfs_ino_t ino, /* inode number to get data for */ | |
1381 | void __user *buffer, /* not used */ | |
1382 | int ubsize, /* not used */ | |
1da177e4 | 1383 | int *ubused, /* not used */ |
1da177e4 LT |
1384 | int *res) /* result code value */ |
1385 | { | |
1386 | xfs_inode_t *ip; | |
52fda114 | 1387 | xfs_qcnt_t nblks, rtblks = 0; |
1da177e4 LT |
1388 | int error; |
1389 | ||
1390 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
1391 | ||
1392 | /* | |
1393 | * rootino must have its resources accounted for, not so with the quota | |
1394 | * inodes. | |
1395 | */ | |
9cad19d2 | 1396 | if (xfs_is_quota_inode(&mp->m_sb, ino)) { |
1da177e4 LT |
1397 | *res = BULKSTAT_RV_NOTHING; |
1398 | return XFS_ERROR(EINVAL); | |
1399 | } | |
1400 | ||
1401 | /* | |
1402 | * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget | |
1403 | * interface expects the inode to be exclusively locked because that's | |
1404 | * the case in all other instances. It's OK that we do this because | |
1405 | * quotacheck is done only at mount time. | |
1406 | */ | |
52fda114 CH |
1407 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_EXCL, &ip); |
1408 | if (error) { | |
1da177e4 | 1409 | *res = BULKSTAT_RV_NOTHING; |
014c2544 | 1410 | return error; |
1da177e4 LT |
1411 | } |
1412 | ||
52fda114 | 1413 | ASSERT(ip->i_delayed_blks == 0); |
1da177e4 | 1414 | |
52fda114 | 1415 | if (XFS_IS_REALTIME_INODE(ip)) { |
1da177e4 LT |
1416 | /* |
1417 | * Walk thru the extent list and count the realtime blocks. | |
1418 | */ | |
52fda114 CH |
1419 | error = xfs_qm_get_rtblks(ip, &rtblks); |
1420 | if (error) | |
1421 | goto error0; | |
1da177e4 | 1422 | } |
1da177e4 | 1423 | |
52fda114 | 1424 | nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks; |
1da177e4 LT |
1425 | |
1426 | /* | |
1427 | * Add the (disk blocks and inode) resources occupied by this | |
1428 | * inode to its dquots. We do this adjustment in the incore dquot, | |
1429 | * and also copy the changes to its buffer. | |
1430 | * We don't care about putting these changes in a transaction | |
1431 | * envelope because if we crash in the middle of a 'quotacheck' | |
1432 | * we have to start from the beginning anyway. | |
1433 | * Once we're done, we'll log all the dquot bufs. | |
1434 | * | |
c41564b5 | 1435 | * The *QUOTA_ON checks below may look pretty racy, but quotachecks |
1da177e4 LT |
1436 | * and quotaoffs don't race. (Quotachecks happen at mount time only). |
1437 | */ | |
1438 | if (XFS_IS_UQUOTA_ON(mp)) { | |
52fda114 CH |
1439 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid, |
1440 | XFS_DQ_USER, nblks, rtblks); | |
1441 | if (error) | |
1442 | goto error0; | |
1da177e4 | 1443 | } |
52fda114 CH |
1444 | |
1445 | if (XFS_IS_GQUOTA_ON(mp)) { | |
1446 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid, | |
1447 | XFS_DQ_GROUP, nblks, rtblks); | |
1448 | if (error) | |
1449 | goto error0; | |
1da177e4 | 1450 | } |
1da177e4 | 1451 | |
52fda114 | 1452 | if (XFS_IS_PQUOTA_ON(mp)) { |
6743099c | 1453 | error = xfs_qm_quotacheck_dqadjust(ip, xfs_get_projid(ip), |
52fda114 CH |
1454 | XFS_DQ_PROJ, nblks, rtblks); |
1455 | if (error) | |
1456 | goto error0; | |
1457 | } | |
1458 | ||
1459 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1460 | IRELE(ip); | |
1da177e4 | 1461 | *res = BULKSTAT_RV_DIDONE; |
014c2544 | 1462 | return 0; |
52fda114 CH |
1463 | |
1464 | error0: | |
1465 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1466 | IRELE(ip); | |
1467 | *res = BULKSTAT_RV_GIVEUP; | |
1468 | return error; | |
1da177e4 LT |
1469 | } |
1470 | ||
b84a3a96 CH |
1471 | STATIC int |
1472 | xfs_qm_flush_one( | |
43ff2122 CH |
1473 | struct xfs_dquot *dqp, |
1474 | void *data) | |
b84a3a96 | 1475 | { |
43ff2122 | 1476 | struct list_head *buffer_list = data; |
fe7257fd | 1477 | struct xfs_buf *bp = NULL; |
b84a3a96 CH |
1478 | int error = 0; |
1479 | ||
1480 | xfs_dqlock(dqp); | |
1481 | if (dqp->dq_flags & XFS_DQ_FREEING) | |
1482 | goto out_unlock; | |
1483 | if (!XFS_DQ_IS_DIRTY(dqp)) | |
1484 | goto out_unlock; | |
1485 | ||
43ff2122 | 1486 | xfs_dqflock(dqp); |
fe7257fd CH |
1487 | error = xfs_qm_dqflush(dqp, &bp); |
1488 | if (error) | |
1489 | goto out_unlock; | |
b84a3a96 | 1490 | |
43ff2122 | 1491 | xfs_buf_delwri_queue(bp, buffer_list); |
fe7257fd | 1492 | xfs_buf_relse(bp); |
b84a3a96 CH |
1493 | out_unlock: |
1494 | xfs_dqunlock(dqp); | |
1495 | return error; | |
1496 | } | |
1497 | ||
1da177e4 LT |
1498 | /* |
1499 | * Walk thru all the filesystem inodes and construct a consistent view | |
1500 | * of the disk quota world. If the quotacheck fails, disable quotas. | |
1501 | */ | |
1502 | int | |
1503 | xfs_qm_quotacheck( | |
1504 | xfs_mount_t *mp) | |
1505 | { | |
113a5683 CS |
1506 | int done, count, error, error2; |
1507 | xfs_ino_t lastino; | |
1508 | size_t structsz; | |
1509 | uint flags; | |
1510 | LIST_HEAD (buffer_list); | |
1511 | struct xfs_inode *uip = mp->m_quotainfo->qi_uquotaip; | |
1512 | struct xfs_inode *gip = mp->m_quotainfo->qi_gquotaip; | |
92f8ff73 | 1513 | struct xfs_inode *pip = mp->m_quotainfo->qi_pquotaip; |
1da177e4 LT |
1514 | |
1515 | count = INT_MAX; | |
1516 | structsz = 1; | |
1517 | lastino = 0; | |
1518 | flags = 0; | |
1519 | ||
92f8ff73 | 1520 | ASSERT(uip || gip || pip); |
1da177e4 LT |
1521 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1522 | ||
0b932ccc | 1523 | xfs_notice(mp, "Quotacheck needed: Please wait."); |
1da177e4 LT |
1524 | |
1525 | /* | |
c8ad20ff | 1526 | * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset |
1da177e4 LT |
1527 | * their counters to zero. We need a clean slate. |
1528 | * We don't log our changes till later. | |
1529 | */ | |
8a7b8a89 | 1530 | if (uip) { |
43ff2122 CH |
1531 | error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA, |
1532 | &buffer_list); | |
8a7b8a89 | 1533 | if (error) |
1da177e4 LT |
1534 | goto error_return; |
1535 | flags |= XFS_UQUOTA_CHKD; | |
1536 | } | |
1537 | ||
8a7b8a89 | 1538 | if (gip) { |
92f8ff73 | 1539 | error = xfs_qm_dqiterate(mp, gip, XFS_QMOPT_GQUOTA, |
43ff2122 | 1540 | &buffer_list); |
8a7b8a89 | 1541 | if (error) |
1da177e4 | 1542 | goto error_return; |
92f8ff73 CS |
1543 | flags |= XFS_GQUOTA_CHKD; |
1544 | } | |
1545 | ||
1546 | if (pip) { | |
1547 | error = xfs_qm_dqiterate(mp, pip, XFS_QMOPT_PQUOTA, | |
1548 | &buffer_list); | |
1549 | if (error) | |
1550 | goto error_return; | |
1551 | flags |= XFS_PQUOTA_CHKD; | |
1da177e4 LT |
1552 | } |
1553 | ||
1554 | do { | |
1555 | /* | |
1556 | * Iterate thru all the inodes in the file system, | |
1557 | * adjusting the corresponding dquot counters in core. | |
1558 | */ | |
7dce11db CH |
1559 | error = xfs_bulkstat(mp, &lastino, &count, |
1560 | xfs_qm_dqusage_adjust, | |
1561 | structsz, NULL, &done); | |
1562 | if (error) | |
1da177e4 LT |
1563 | break; |
1564 | ||
7dce11db | 1565 | } while (!done); |
1da177e4 | 1566 | |
4b8879df | 1567 | /* |
b84a3a96 CH |
1568 | * We've made all the changes that we need to make incore. Flush them |
1569 | * down to disk buffers if everything was updated successfully. | |
4b8879df | 1570 | */ |
43ff2122 CH |
1571 | if (XFS_IS_UQUOTA_ON(mp)) { |
1572 | error = xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_flush_one, | |
1573 | &buffer_list); | |
1574 | } | |
b84a3a96 | 1575 | if (XFS_IS_GQUOTA_ON(mp)) { |
43ff2122 CH |
1576 | error2 = xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_flush_one, |
1577 | &buffer_list); | |
b84a3a96 CH |
1578 | if (!error) |
1579 | error = error2; | |
1580 | } | |
1581 | if (XFS_IS_PQUOTA_ON(mp)) { | |
43ff2122 CH |
1582 | error2 = xfs_qm_dquot_walk(mp, XFS_DQ_PROJ, xfs_qm_flush_one, |
1583 | &buffer_list); | |
b84a3a96 CH |
1584 | if (!error) |
1585 | error = error2; | |
1586 | } | |
4b8879df | 1587 | |
43ff2122 CH |
1588 | error2 = xfs_buf_delwri_submit(&buffer_list); |
1589 | if (!error) | |
1590 | error = error2; | |
1591 | ||
1da177e4 LT |
1592 | /* |
1593 | * We can get this error if we couldn't do a dquot allocation inside | |
1594 | * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the | |
1595 | * dirty dquots that might be cached, we just want to get rid of them | |
1596 | * and turn quotaoff. The dquots won't be attached to any of the inodes | |
1597 | * at this point (because we intentionally didn't in dqget_noattach). | |
1598 | */ | |
1599 | if (error) { | |
8112e9dc | 1600 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 LT |
1601 | goto error_return; |
1602 | } | |
1da177e4 | 1603 | |
1da177e4 LT |
1604 | /* |
1605 | * If one type of quotas is off, then it will lose its | |
1606 | * quotachecked status, since we won't be doing accounting for | |
1607 | * that type anymore. | |
1608 | */ | |
4177af3a | 1609 | mp->m_qflags &= ~XFS_ALL_QUOTA_CHKD; |
1da177e4 LT |
1610 | mp->m_qflags |= flags; |
1611 | ||
1da177e4 | 1612 | error_return: |
43ff2122 CH |
1613 | while (!list_empty(&buffer_list)) { |
1614 | struct xfs_buf *bp = | |
1615 | list_first_entry(&buffer_list, struct xfs_buf, b_list); | |
1616 | list_del_init(&bp->b_list); | |
1617 | xfs_buf_relse(bp); | |
1618 | } | |
1619 | ||
1da177e4 | 1620 | if (error) { |
0b932ccc DC |
1621 | xfs_warn(mp, |
1622 | "Quotacheck: Unsuccessful (Error %d): Disabling quotas.", | |
1623 | error); | |
1da177e4 LT |
1624 | /* |
1625 | * We must turn off quotas. | |
1626 | */ | |
1627 | ASSERT(mp->m_quotainfo != NULL); | |
1da177e4 | 1628 | xfs_qm_destroy_quotainfo(mp); |
31d5577b | 1629 | if (xfs_mount_reset_sbqflags(mp)) { |
0b932ccc DC |
1630 | xfs_warn(mp, |
1631 | "Quotacheck: Failed to reset quota flags."); | |
31d5577b | 1632 | } |
0b932ccc DC |
1633 | } else |
1634 | xfs_notice(mp, "Quotacheck: Done."); | |
1da177e4 LT |
1635 | return (error); |
1636 | } | |
1637 | ||
1638 | /* | |
1639 | * This is called after the superblock has been read in and we're ready to | |
1640 | * iget the quota inodes. | |
1641 | */ | |
1642 | STATIC int | |
1643 | xfs_qm_init_quotainos( | |
1644 | xfs_mount_t *mp) | |
1645 | { | |
113a5683 CS |
1646 | struct xfs_inode *uip = NULL; |
1647 | struct xfs_inode *gip = NULL; | |
92f8ff73 | 1648 | struct xfs_inode *pip = NULL; |
113a5683 CS |
1649 | int error; |
1650 | __int64_t sbflags = 0; | |
1651 | uint flags = 0; | |
1da177e4 LT |
1652 | |
1653 | ASSERT(mp->m_quotainfo); | |
1da177e4 LT |
1654 | |
1655 | /* | |
1656 | * Get the uquota and gquota inodes | |
1657 | */ | |
62118709 | 1658 | if (xfs_sb_version_hasquota(&mp->m_sb)) { |
1da177e4 LT |
1659 | if (XFS_IS_UQUOTA_ON(mp) && |
1660 | mp->m_sb.sb_uquotino != NULLFSINO) { | |
1661 | ASSERT(mp->m_sb.sb_uquotino > 0); | |
113a5683 CS |
1662 | error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, |
1663 | 0, 0, &uip); | |
1664 | if (error) | |
1da177e4 LT |
1665 | return XFS_ERROR(error); |
1666 | } | |
92f8ff73 | 1667 | if (XFS_IS_GQUOTA_ON(mp) && |
1da177e4 LT |
1668 | mp->m_sb.sb_gquotino != NULLFSINO) { |
1669 | ASSERT(mp->m_sb.sb_gquotino > 0); | |
113a5683 CS |
1670 | error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, |
1671 | 0, 0, &gip); | |
1672 | if (error) | |
1673 | goto error_rele; | |
1da177e4 | 1674 | } |
92f8ff73 | 1675 | if (XFS_IS_PQUOTA_ON(mp) && |
d892d586 CS |
1676 | mp->m_sb.sb_pquotino != NULLFSINO) { |
1677 | ASSERT(mp->m_sb.sb_pquotino > 0); | |
1678 | error = xfs_iget(mp, NULL, mp->m_sb.sb_pquotino, | |
92f8ff73 CS |
1679 | 0, 0, &pip); |
1680 | if (error) | |
1681 | goto error_rele; | |
1682 | } | |
1da177e4 LT |
1683 | } else { |
1684 | flags |= XFS_QMOPT_SBVERSION; | |
1685 | sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
d892d586 CS |
1686 | XFS_SB_GQUOTINO | XFS_SB_PQUOTINO | |
1687 | XFS_SB_QFLAGS); | |
1da177e4 LT |
1688 | } |
1689 | ||
1690 | /* | |
92f8ff73 | 1691 | * Create the three inodes, if they don't exist already. The changes |
1da177e4 LT |
1692 | * made above will get added to a transaction and logged in one of |
1693 | * the qino_alloc calls below. If the device is readonly, | |
1694 | * temporarily switch to read-write to do this. | |
1695 | */ | |
1696 | if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { | |
113a5683 | 1697 | error = xfs_qm_qino_alloc(mp, &uip, |
1da177e4 | 1698 | sbflags | XFS_SB_UQUOTINO, |
113a5683 CS |
1699 | flags | XFS_QMOPT_UQUOTA); |
1700 | if (error) | |
1701 | goto error_rele; | |
1da177e4 LT |
1702 | |
1703 | flags &= ~XFS_QMOPT_SBVERSION; | |
1704 | } | |
92f8ff73 | 1705 | if (XFS_IS_GQUOTA_ON(mp) && gip == NULL) { |
c8ad20ff | 1706 | error = xfs_qm_qino_alloc(mp, &gip, |
92f8ff73 CS |
1707 | sbflags | XFS_SB_GQUOTINO, |
1708 | flags | XFS_QMOPT_GQUOTA); | |
1709 | if (error) | |
1710 | goto error_rele; | |
1711 | ||
1712 | flags &= ~XFS_QMOPT_SBVERSION; | |
1713 | } | |
1714 | if (XFS_IS_PQUOTA_ON(mp) && pip == NULL) { | |
92f8ff73 | 1715 | error = xfs_qm_qino_alloc(mp, &pip, |
d892d586 | 1716 | sbflags | XFS_SB_PQUOTINO, |
92f8ff73 | 1717 | flags | XFS_QMOPT_PQUOTA); |
113a5683 CS |
1718 | if (error) |
1719 | goto error_rele; | |
1da177e4 LT |
1720 | } |
1721 | ||
8a7b8a89 CH |
1722 | mp->m_quotainfo->qi_uquotaip = uip; |
1723 | mp->m_quotainfo->qi_gquotaip = gip; | |
92f8ff73 | 1724 | mp->m_quotainfo->qi_pquotaip = pip; |
1da177e4 | 1725 | |
014c2544 | 1726 | return 0; |
113a5683 CS |
1727 | |
1728 | error_rele: | |
1729 | if (uip) | |
1730 | IRELE(uip); | |
1731 | if (gip) | |
1732 | IRELE(gip); | |
92f8ff73 CS |
1733 | if (pip) |
1734 | IRELE(pip); | |
113a5683 | 1735 | return XFS_ERROR(error); |
1da177e4 LT |
1736 | } |
1737 | ||
92b2e5b3 CH |
1738 | STATIC void |
1739 | xfs_qm_dqfree_one( | |
1740 | struct xfs_dquot *dqp) | |
1741 | { | |
1742 | struct xfs_mount *mp = dqp->q_mount; | |
1743 | struct xfs_quotainfo *qi = mp->m_quotainfo; | |
1da177e4 | 1744 | |
9f920f11 | 1745 | mutex_lock(&qi->qi_tree_lock); |
329e0875 | 1746 | radix_tree_delete(xfs_dquot_tree(qi, dqp->q_core.d_flags), |
9f920f11 | 1747 | be32_to_cpu(dqp->q_core.d_id)); |
368e1361 | 1748 | |
92b2e5b3 | 1749 | qi->qi_dquots--; |
b84a3a96 | 1750 | mutex_unlock(&qi->qi_tree_lock); |
92b2e5b3 CH |
1751 | |
1752 | xfs_qm_dqdestroy(dqp); | |
1753 | } | |
1754 | ||
1da177e4 LT |
1755 | /* |
1756 | * Start a transaction and write the incore superblock changes to | |
1757 | * disk. flags parameter indicates which fields have changed. | |
1758 | */ | |
1759 | int | |
1760 | xfs_qm_write_sb_changes( | |
1761 | xfs_mount_t *mp, | |
1762 | __int64_t flags) | |
1763 | { | |
1764 | xfs_trans_t *tp; | |
1765 | int error; | |
1766 | ||
1da177e4 | 1767 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); |
3d3c8b52 | 1768 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_sbchange, 0, 0); |
f910a8c6 | 1769 | if (error) { |
1da177e4 | 1770 | xfs_trans_cancel(tp, 0); |
014c2544 | 1771 | return error; |
1da177e4 LT |
1772 | } |
1773 | ||
1774 | xfs_mod_sb(tp, flags); | |
e5720eec | 1775 | error = xfs_trans_commit(tp, 0); |
1da177e4 | 1776 | |
e5720eec | 1777 | return error; |
1da177e4 LT |
1778 | } |
1779 | ||
1780 | ||
1781 | /* --------------- utility functions for vnodeops ---------------- */ | |
1782 | ||
1783 | ||
1784 | /* | |
6c77b0ea | 1785 | * Given an inode, a uid, gid and prid make sure that we have |
1da177e4 LT |
1786 | * allocated relevant dquot(s) on disk, and that we won't exceed inode |
1787 | * quotas by creating this file. | |
1788 | * This also attaches dquot(s) to the given inode after locking it, | |
1789 | * and returns the dquots corresponding to the uid and/or gid. | |
1790 | * | |
1791 | * in : inode (unlocked) | |
1792 | * out : udquot, gdquot with references taken and unlocked | |
1793 | */ | |
1794 | int | |
1795 | xfs_qm_vop_dqalloc( | |
7d095257 | 1796 | struct xfs_inode *ip, |
7aab1b28 DE |
1797 | xfs_dqid_t uid, |
1798 | xfs_dqid_t gid, | |
7d095257 CH |
1799 | prid_t prid, |
1800 | uint flags, | |
1801 | struct xfs_dquot **O_udqpp, | |
92f8ff73 CS |
1802 | struct xfs_dquot **O_gdqpp, |
1803 | struct xfs_dquot **O_pdqpp) | |
1da177e4 | 1804 | { |
7d095257 | 1805 | struct xfs_mount *mp = ip->i_mount; |
113a5683 CS |
1806 | struct xfs_dquot *uq = NULL; |
1807 | struct xfs_dquot *gq = NULL; | |
92f8ff73 | 1808 | struct xfs_dquot *pq = NULL; |
7d095257 CH |
1809 | int error; |
1810 | uint lockflags; | |
1da177e4 | 1811 | |
7d095257 | 1812 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
1da177e4 LT |
1813 | return 0; |
1814 | ||
1815 | lockflags = XFS_ILOCK_EXCL; | |
1816 | xfs_ilock(ip, lockflags); | |
1817 | ||
bd186aa9 | 1818 | if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) |
1da177e4 LT |
1819 | gid = ip->i_d.di_gid; |
1820 | ||
1821 | /* | |
1822 | * Attach the dquot(s) to this inode, doing a dquot allocation | |
1823 | * if necessary. The dquot(s) will not be locked. | |
1824 | */ | |
1825 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
7d095257 CH |
1826 | error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC); |
1827 | if (error) { | |
1da177e4 | 1828 | xfs_iunlock(ip, lockflags); |
014c2544 | 1829 | return error; |
1da177e4 LT |
1830 | } |
1831 | } | |
1832 | ||
c8ad20ff | 1833 | if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { |
1da177e4 LT |
1834 | if (ip->i_d.di_uid != uid) { |
1835 | /* | |
1836 | * What we need is the dquot that has this uid, and | |
1837 | * if we send the inode to dqget, the uid of the inode | |
1838 | * takes priority over what's sent in the uid argument. | |
1839 | * We must unlock inode here before calling dqget if | |
1840 | * we're not sending the inode, because otherwise | |
1841 | * we'll deadlock by doing trans_reserve while | |
1842 | * holding ilock. | |
1843 | */ | |
1844 | xfs_iunlock(ip, lockflags); | |
7aab1b28 | 1845 | error = xfs_qm_dqget(mp, NULL, uid, |
1da177e4 LT |
1846 | XFS_DQ_USER, |
1847 | XFS_QMOPT_DQALLOC | | |
1848 | XFS_QMOPT_DOWARN, | |
113a5683 CS |
1849 | &uq); |
1850 | if (error) { | |
1da177e4 | 1851 | ASSERT(error != ENOENT); |
014c2544 | 1852 | return error; |
1da177e4 LT |
1853 | } |
1854 | /* | |
1855 | * Get the ilock in the right order. | |
1856 | */ | |
1857 | xfs_dqunlock(uq); | |
1858 | lockflags = XFS_ILOCK_SHARED; | |
1859 | xfs_ilock(ip, lockflags); | |
1860 | } else { | |
1861 | /* | |
1862 | * Take an extra reference, because we'll return | |
1863 | * this to caller | |
1864 | */ | |
1865 | ASSERT(ip->i_udquot); | |
78e55892 | 1866 | uq = xfs_qm_dqhold(ip->i_udquot); |
1da177e4 LT |
1867 | } |
1868 | } | |
c8ad20ff | 1869 | if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { |
1da177e4 LT |
1870 | if (ip->i_d.di_gid != gid) { |
1871 | xfs_iunlock(ip, lockflags); | |
7aab1b28 | 1872 | error = xfs_qm_dqget(mp, NULL, gid, |
1da177e4 LT |
1873 | XFS_DQ_GROUP, |
1874 | XFS_QMOPT_DQALLOC | | |
1875 | XFS_QMOPT_DOWARN, | |
113a5683 CS |
1876 | &gq); |
1877 | if (error) { | |
1da177e4 | 1878 | ASSERT(error != ENOENT); |
113a5683 | 1879 | goto error_rele; |
1da177e4 LT |
1880 | } |
1881 | xfs_dqunlock(gq); | |
1882 | lockflags = XFS_ILOCK_SHARED; | |
1883 | xfs_ilock(ip, lockflags); | |
1884 | } else { | |
1885 | ASSERT(ip->i_gdquot); | |
78e55892 | 1886 | gq = xfs_qm_dqhold(ip->i_gdquot); |
1da177e4 | 1887 | } |
92f8ff73 CS |
1888 | } |
1889 | if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { | |
6743099c | 1890 | if (xfs_get_projid(ip) != prid) { |
c8ad20ff | 1891 | xfs_iunlock(ip, lockflags); |
113a5683 | 1892 | error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, |
c8ad20ff NS |
1893 | XFS_DQ_PROJ, |
1894 | XFS_QMOPT_DQALLOC | | |
1895 | XFS_QMOPT_DOWARN, | |
92f8ff73 | 1896 | &pq); |
113a5683 | 1897 | if (error) { |
c8ad20ff | 1898 | ASSERT(error != ENOENT); |
113a5683 | 1899 | goto error_rele; |
c8ad20ff | 1900 | } |
92f8ff73 | 1901 | xfs_dqunlock(pq); |
c8ad20ff NS |
1902 | lockflags = XFS_ILOCK_SHARED; |
1903 | xfs_ilock(ip, lockflags); | |
1904 | } else { | |
92f8ff73 CS |
1905 | ASSERT(ip->i_pdquot); |
1906 | pq = xfs_qm_dqhold(ip->i_pdquot); | |
c8ad20ff | 1907 | } |
1da177e4 LT |
1908 | } |
1909 | if (uq) | |
0b1b213f | 1910 | trace_xfs_dquot_dqalloc(ip); |
1da177e4 LT |
1911 | |
1912 | xfs_iunlock(ip, lockflags); | |
1913 | if (O_udqpp) | |
1914 | *O_udqpp = uq; | |
1915 | else if (uq) | |
1916 | xfs_qm_dqrele(uq); | |
1917 | if (O_gdqpp) | |
1918 | *O_gdqpp = gq; | |
1919 | else if (gq) | |
1920 | xfs_qm_dqrele(gq); | |
92f8ff73 CS |
1921 | if (O_pdqpp) |
1922 | *O_pdqpp = pq; | |
1923 | else if (pq) | |
1924 | xfs_qm_dqrele(pq); | |
014c2544 | 1925 | return 0; |
113a5683 CS |
1926 | |
1927 | error_rele: | |
92f8ff73 CS |
1928 | if (gq) |
1929 | xfs_qm_dqrele(gq); | |
113a5683 CS |
1930 | if (uq) |
1931 | xfs_qm_dqrele(uq); | |
1932 | return error; | |
1da177e4 LT |
1933 | } |
1934 | ||
1935 | /* | |
1936 | * Actually transfer ownership, and do dquot modifications. | |
1937 | * These were already reserved. | |
1938 | */ | |
1939 | xfs_dquot_t * | |
1940 | xfs_qm_vop_chown( | |
1941 | xfs_trans_t *tp, | |
1942 | xfs_inode_t *ip, | |
1943 | xfs_dquot_t **IO_olddq, | |
1944 | xfs_dquot_t *newdq) | |
1945 | { | |
1946 | xfs_dquot_t *prevdq; | |
06d10dd9 NS |
1947 | uint bfield = XFS_IS_REALTIME_INODE(ip) ? |
1948 | XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; | |
1949 | ||
7d095257 | 1950 | |
579aa9ca | 1951 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
1952 | ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); |
1953 | ||
1954 | /* old dquot */ | |
1955 | prevdq = *IO_olddq; | |
1956 | ASSERT(prevdq); | |
1957 | ASSERT(prevdq != newdq); | |
1958 | ||
06d10dd9 NS |
1959 | xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks)); |
1960 | xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); | |
1da177e4 LT |
1961 | |
1962 | /* the sparkling new dquot */ | |
06d10dd9 NS |
1963 | xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks); |
1964 | xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); | |
1da177e4 LT |
1965 | |
1966 | /* | |
78e55892 CH |
1967 | * Take an extra reference, because the inode is going to keep |
1968 | * this dquot pointer even after the trans_commit. | |
1da177e4 | 1969 | */ |
78e55892 | 1970 | *IO_olddq = xfs_qm_dqhold(newdq); |
1da177e4 | 1971 | |
014c2544 | 1972 | return prevdq; |
1da177e4 LT |
1973 | } |
1974 | ||
1975 | /* | |
c8ad20ff | 1976 | * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID). |
1da177e4 LT |
1977 | */ |
1978 | int | |
1979 | xfs_qm_vop_chown_reserve( | |
113a5683 CS |
1980 | struct xfs_trans *tp, |
1981 | struct xfs_inode *ip, | |
1982 | struct xfs_dquot *udqp, | |
1983 | struct xfs_dquot *gdqp, | |
92f8ff73 | 1984 | struct xfs_dquot *pdqp, |
113a5683 | 1985 | uint flags) |
1da177e4 | 1986 | { |
113a5683 CS |
1987 | struct xfs_mount *mp = ip->i_mount; |
1988 | uint delblks, blkflags, prjflags = 0; | |
1989 | struct xfs_dquot *udq_unres = NULL; | |
1990 | struct xfs_dquot *gdq_unres = NULL; | |
92f8ff73 | 1991 | struct xfs_dquot *pdq_unres = NULL; |
113a5683 CS |
1992 | struct xfs_dquot *udq_delblks = NULL; |
1993 | struct xfs_dquot *gdq_delblks = NULL; | |
92f8ff73 | 1994 | struct xfs_dquot *pdq_delblks = NULL; |
113a5683 | 1995 | int error; |
7d095257 | 1996 | |
1da177e4 | 1997 | |
579aa9ca | 1998 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); |
1da177e4 LT |
1999 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
2000 | ||
2001 | delblks = ip->i_delayed_blks; | |
06d10dd9 NS |
2002 | blkflags = XFS_IS_REALTIME_INODE(ip) ? |
2003 | XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS; | |
1da177e4 LT |
2004 | |
2005 | if (XFS_IS_UQUOTA_ON(mp) && udqp && | |
7aab1b28 | 2006 | ip->i_d.di_uid != be32_to_cpu(udqp->q_core.d_id)) { |
113a5683 | 2007 | udq_delblks = udqp; |
1da177e4 LT |
2008 | /* |
2009 | * If there are delayed allocation blocks, then we have to | |
2010 | * unreserve those from the old dquot, and add them to the | |
2011 | * new dquot. | |
2012 | */ | |
2013 | if (delblks) { | |
2014 | ASSERT(ip->i_udquot); | |
113a5683 | 2015 | udq_unres = ip->i_udquot; |
1da177e4 LT |
2016 | } |
2017 | } | |
92f8ff73 CS |
2018 | if (XFS_IS_GQUOTA_ON(ip->i_mount) && gdqp && |
2019 | ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id)) { | |
2020 | gdq_delblks = gdqp; | |
2021 | if (delblks) { | |
2022 | ASSERT(ip->i_gdquot); | |
2023 | gdq_unres = ip->i_gdquot; | |
2024 | } | |
2025 | } | |
2026 | ||
2027 | if (XFS_IS_PQUOTA_ON(ip->i_mount) && pdqp && | |
2028 | xfs_get_projid(ip) != be32_to_cpu(pdqp->q_core.d_id)) { | |
2029 | prjflags = XFS_QMOPT_ENOSPC; | |
2030 | pdq_delblks = pdqp; | |
2031 | if (delblks) { | |
2032 | ASSERT(ip->i_pdquot); | |
2033 | pdq_unres = ip->i_pdquot; | |
1da177e4 LT |
2034 | } |
2035 | } | |
2036 | ||
113a5683 | 2037 | error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, |
92f8ff73 CS |
2038 | udq_delblks, gdq_delblks, pdq_delblks, |
2039 | ip->i_d.di_nblocks, 1, | |
113a5683 CS |
2040 | flags | blkflags | prjflags); |
2041 | if (error) | |
2042 | return error; | |
1da177e4 LT |
2043 | |
2044 | /* | |
2045 | * Do the delayed blks reservations/unreservations now. Since, these | |
2046 | * are done without the help of a transaction, if a reservation fails | |
2047 | * its previous reservations won't be automatically undone by trans | |
2048 | * code. So, we have to do it manually here. | |
2049 | */ | |
2050 | if (delblks) { | |
2051 | /* | |
2052 | * Do the reservations first. Unreservation can't fail. | |
2053 | */ | |
92f8ff73 CS |
2054 | ASSERT(udq_delblks || gdq_delblks || pdq_delblks); |
2055 | ASSERT(udq_unres || gdq_unres || pdq_unres); | |
113a5683 | 2056 | error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, |
92f8ff73 CS |
2057 | udq_delblks, gdq_delblks, pdq_delblks, |
2058 | (xfs_qcnt_t)delblks, 0, | |
113a5683 CS |
2059 | flags | blkflags | prjflags); |
2060 | if (error) | |
2061 | return error; | |
1da177e4 | 2062 | xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, |
92f8ff73 CS |
2063 | udq_unres, gdq_unres, pdq_unres, |
2064 | -((xfs_qcnt_t)delblks), 0, blkflags); | |
1da177e4 LT |
2065 | } |
2066 | ||
2067 | return (0); | |
2068 | } | |
2069 | ||
2070 | int | |
2071 | xfs_qm_vop_rename_dqattach( | |
7d095257 | 2072 | struct xfs_inode **i_tab) |
1da177e4 | 2073 | { |
7d095257 CH |
2074 | struct xfs_mount *mp = i_tab[0]->i_mount; |
2075 | int i; | |
1da177e4 | 2076 | |
7d095257 | 2077 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
014c2544 | 2078 | return 0; |
1da177e4 | 2079 | |
7d095257 CH |
2080 | for (i = 0; (i < 4 && i_tab[i]); i++) { |
2081 | struct xfs_inode *ip = i_tab[i]; | |
2082 | int error; | |
2083 | ||
1da177e4 LT |
2084 | /* |
2085 | * Watch out for duplicate entries in the table. | |
2086 | */ | |
7d095257 CH |
2087 | if (i == 0 || ip != i_tab[i-1]) { |
2088 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
1da177e4 LT |
2089 | error = xfs_qm_dqattach(ip, 0); |
2090 | if (error) | |
014c2544 | 2091 | return error; |
1da177e4 LT |
2092 | } |
2093 | } | |
2094 | } | |
014c2544 | 2095 | return 0; |
1da177e4 LT |
2096 | } |
2097 | ||
2098 | void | |
7d095257 CH |
2099 | xfs_qm_vop_create_dqattach( |
2100 | struct xfs_trans *tp, | |
2101 | struct xfs_inode *ip, | |
2102 | struct xfs_dquot *udqp, | |
92f8ff73 CS |
2103 | struct xfs_dquot *gdqp, |
2104 | struct xfs_dquot *pdqp) | |
1da177e4 | 2105 | { |
7d095257 CH |
2106 | struct xfs_mount *mp = tp->t_mountp; |
2107 | ||
2108 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) | |
1da177e4 LT |
2109 | return; |
2110 | ||
579aa9ca | 2111 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
7d095257 | 2112 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1da177e4 | 2113 | |
37eb9706 | 2114 | if (udqp && XFS_IS_UQUOTA_ON(mp)) { |
1da177e4 | 2115 | ASSERT(ip->i_udquot == NULL); |
1149d96a | 2116 | ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id)); |
78e55892 CH |
2117 | |
2118 | ip->i_udquot = xfs_qm_dqhold(udqp); | |
1da177e4 LT |
2119 | xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); |
2120 | } | |
37eb9706 | 2121 | if (gdqp && XFS_IS_GQUOTA_ON(mp)) { |
1da177e4 | 2122 | ASSERT(ip->i_gdquot == NULL); |
92f8ff73 | 2123 | ASSERT(ip->i_d.di_gid == be32_to_cpu(gdqp->q_core.d_id)); |
78e55892 | 2124 | ip->i_gdquot = xfs_qm_dqhold(gdqp); |
1da177e4 LT |
2125 | xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); |
2126 | } | |
37eb9706 | 2127 | if (pdqp && XFS_IS_PQUOTA_ON(mp)) { |
92f8ff73 | 2128 | ASSERT(ip->i_pdquot == NULL); |
92f8ff73 CS |
2129 | ASSERT(xfs_get_projid(ip) == be32_to_cpu(pdqp->q_core.d_id)); |
2130 | ||
2131 | ip->i_pdquot = xfs_qm_dqhold(pdqp); | |
2132 | xfs_trans_mod_dquot(tp, pdqp, XFS_TRANS_DQ_ICOUNT, 1); | |
2133 | } | |
1da177e4 LT |
2134 | } |
2135 |