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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" | |
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 *); |
1da177e4 | 54 | |
cd56a39a DC |
55 | |
56 | STATIC void xfs_qm_dqfree_one(struct xfs_dquot *dqp); | |
b84a3a96 CH |
57 | /* |
58 | * We use the batch lookup interface to iterate over the dquots as it | |
59 | * currently is the only interface into the radix tree code that allows | |
60 | * fuzzy lookups instead of exact matches. Holding the lock over multiple | |
61 | * operations is fine as all callers are used either during mount/umount | |
62 | * or quotaoff. | |
63 | */ | |
64 | #define XFS_DQ_LOOKUP_BATCH 32 | |
65 | ||
66 | STATIC int | |
67 | xfs_qm_dquot_walk( | |
68 | struct xfs_mount *mp, | |
69 | int type, | |
43ff2122 CH |
70 | int (*execute)(struct xfs_dquot *dqp, void *data), |
71 | void *data) | |
b84a3a96 CH |
72 | { |
73 | struct xfs_quotainfo *qi = mp->m_quotainfo; | |
329e0875 | 74 | struct radix_tree_root *tree = xfs_dquot_tree(qi, type); |
b84a3a96 CH |
75 | uint32_t next_index; |
76 | int last_error = 0; | |
77 | int skipped; | |
78 | int nr_found; | |
79 | ||
80 | restart: | |
81 | skipped = 0; | |
82 | next_index = 0; | |
83 | nr_found = 0; | |
84 | ||
85 | while (1) { | |
86 | struct xfs_dquot *batch[XFS_DQ_LOOKUP_BATCH]; | |
87 | int error = 0; | |
88 | int i; | |
89 | ||
90 | mutex_lock(&qi->qi_tree_lock); | |
91 | nr_found = radix_tree_gang_lookup(tree, (void **)batch, | |
92 | next_index, XFS_DQ_LOOKUP_BATCH); | |
93 | if (!nr_found) { | |
94 | mutex_unlock(&qi->qi_tree_lock); | |
95 | break; | |
96 | } | |
97 | ||
98 | for (i = 0; i < nr_found; i++) { | |
99 | struct xfs_dquot *dqp = batch[i]; | |
100 | ||
101 | next_index = be32_to_cpu(dqp->q_core.d_id) + 1; | |
102 | ||
43ff2122 | 103 | error = execute(batch[i], data); |
b84a3a96 CH |
104 | if (error == EAGAIN) { |
105 | skipped++; | |
106 | continue; | |
107 | } | |
108 | if (error && last_error != EFSCORRUPTED) | |
109 | last_error = error; | |
110 | } | |
111 | ||
112 | mutex_unlock(&qi->qi_tree_lock); | |
113 | ||
114 | /* bail out if the filesystem is corrupted. */ | |
115 | if (last_error == EFSCORRUPTED) { | |
116 | skipped = 0; | |
117 | break; | |
118 | } | |
119 | } | |
120 | ||
121 | if (skipped) { | |
122 | delay(1); | |
123 | goto restart; | |
124 | } | |
125 | ||
126 | return last_error; | |
127 | } | |
128 | ||
129 | ||
130 | /* | |
131 | * Purge a dquot from all tracking data structures and free it. | |
132 | */ | |
133 | STATIC int | |
134 | xfs_qm_dqpurge( | |
43ff2122 CH |
135 | struct xfs_dquot *dqp, |
136 | void *data) | |
b84a3a96 CH |
137 | { |
138 | struct xfs_mount *mp = dqp->q_mount; | |
139 | struct xfs_quotainfo *qi = mp->m_quotainfo; | |
140 | struct xfs_dquot *gdqp = NULL; | |
92f8ff73 | 141 | struct xfs_dquot *pdqp = NULL; |
b84a3a96 CH |
142 | |
143 | xfs_dqlock(dqp); | |
144 | if ((dqp->dq_flags & XFS_DQ_FREEING) || dqp->q_nrefs != 0) { | |
145 | xfs_dqunlock(dqp); | |
146 | return EAGAIN; | |
147 | } | |
148 | ||
149 | /* | |
92f8ff73 | 150 | * If this quota has a hint attached, prepare for releasing it now. |
b84a3a96 CH |
151 | */ |
152 | gdqp = dqp->q_gdquot; | |
153 | if (gdqp) { | |
154 | xfs_dqlock(gdqp); | |
155 | dqp->q_gdquot = NULL; | |
156 | } | |
157 | ||
92f8ff73 CS |
158 | pdqp = dqp->q_pdquot; |
159 | if (pdqp) { | |
160 | xfs_dqlock(pdqp); | |
161 | dqp->q_pdquot = NULL; | |
162 | } | |
163 | ||
b84a3a96 CH |
164 | dqp->dq_flags |= XFS_DQ_FREEING; |
165 | ||
43ff2122 | 166 | xfs_dqflock(dqp); |
b84a3a96 CH |
167 | |
168 | /* | |
169 | * If we are turning this type of quotas off, we don't care | |
170 | * about the dirty metadata sitting in this dquot. OTOH, if | |
171 | * we're unmounting, we do care, so we flush it and wait. | |
172 | */ | |
173 | if (XFS_DQ_IS_DIRTY(dqp)) { | |
fe7257fd CH |
174 | struct xfs_buf *bp = NULL; |
175 | int error; | |
b84a3a96 CH |
176 | |
177 | /* | |
178 | * We don't care about getting disk errors here. We need | |
179 | * to purge this dquot anyway, so we go ahead regardless. | |
180 | */ | |
fe7257fd CH |
181 | error = xfs_qm_dqflush(dqp, &bp); |
182 | if (error) { | |
b84a3a96 CH |
183 | xfs_warn(mp, "%s: dquot %p flush failed", |
184 | __func__, dqp); | |
fe7257fd CH |
185 | } else { |
186 | error = xfs_bwrite(bp); | |
187 | xfs_buf_relse(bp); | |
188 | } | |
b84a3a96 CH |
189 | xfs_dqflock(dqp); |
190 | } | |
191 | ||
192 | ASSERT(atomic_read(&dqp->q_pincount) == 0); | |
193 | ASSERT(XFS_FORCED_SHUTDOWN(mp) || | |
194 | !(dqp->q_logitem.qli_item.li_flags & XFS_LI_IN_AIL)); | |
195 | ||
196 | xfs_dqfunlock(dqp); | |
197 | xfs_dqunlock(dqp); | |
198 | ||
329e0875 | 199 | radix_tree_delete(xfs_dquot_tree(qi, dqp->q_core.d_flags), |
b84a3a96 CH |
200 | be32_to_cpu(dqp->q_core.d_id)); |
201 | qi->qi_dquots--; | |
202 | ||
203 | /* | |
204 | * We move dquots to the freelist as soon as their reference count | |
205 | * hits zero, so it really should be on the freelist here. | |
206 | */ | |
b84a3a96 | 207 | ASSERT(!list_empty(&dqp->q_lru)); |
cd56a39a | 208 | list_lru_del(&qi->qi_lru, &dqp->q_lru); |
b84a3a96 | 209 | XFS_STATS_DEC(xs_qm_dquot_unused); |
b84a3a96 CH |
210 | |
211 | xfs_qm_dqdestroy(dqp); | |
212 | ||
213 | if (gdqp) | |
214 | xfs_qm_dqput(gdqp); | |
92f8ff73 CS |
215 | if (pdqp) |
216 | xfs_qm_dqput(pdqp); | |
b84a3a96 CH |
217 | return 0; |
218 | } | |
219 | ||
220 | /* | |
221 | * Purge the dquot cache. | |
222 | */ | |
223 | void | |
224 | xfs_qm_dqpurge_all( | |
225 | struct xfs_mount *mp, | |
226 | uint flags) | |
227 | { | |
228 | if (flags & XFS_QMOPT_UQUOTA) | |
43ff2122 | 229 | xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_dqpurge, NULL); |
b84a3a96 | 230 | if (flags & XFS_QMOPT_GQUOTA) |
43ff2122 | 231 | xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_dqpurge, NULL); |
b84a3a96 | 232 | if (flags & XFS_QMOPT_PQUOTA) |
43ff2122 | 233 | xfs_qm_dquot_walk(mp, XFS_DQ_PROJ, xfs_qm_dqpurge, NULL); |
b84a3a96 CH |
234 | } |
235 | ||
1da177e4 LT |
236 | /* |
237 | * Just destroy the quotainfo structure. | |
238 | */ | |
239 | void | |
7d095257 CH |
240 | xfs_qm_unmount( |
241 | struct xfs_mount *mp) | |
1da177e4 | 242 | { |
7d095257 | 243 | if (mp->m_quotainfo) { |
8112e9dc | 244 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 | 245 | xfs_qm_destroy_quotainfo(mp); |
7d095257 | 246 | } |
1da177e4 LT |
247 | } |
248 | ||
249 | ||
250 | /* | |
251 | * This is called from xfs_mountfs to start quotas and initialize all | |
252 | * necessary data structures like quotainfo. This is also responsible for | |
253 | * running a quotacheck as necessary. We are guaranteed that the superblock | |
254 | * is consistently read in at this point. | |
53aa7915 DC |
255 | * |
256 | * If we fail here, the mount will continue with quota turned off. We don't | |
257 | * need to inidicate success or failure at all. | |
1da177e4 | 258 | */ |
53aa7915 | 259 | void |
1da177e4 | 260 | xfs_qm_mount_quotas( |
4249023a | 261 | xfs_mount_t *mp) |
1da177e4 | 262 | { |
1da177e4 LT |
263 | int error = 0; |
264 | uint sbf; | |
265 | ||
1da177e4 LT |
266 | /* |
267 | * If quotas on realtime volumes is not supported, we disable | |
268 | * quotas immediately. | |
269 | */ | |
270 | if (mp->m_sb.sb_rextents) { | |
0b932ccc | 271 | xfs_notice(mp, "Cannot turn on quotas for realtime filesystem"); |
1da177e4 LT |
272 | mp->m_qflags = 0; |
273 | goto write_changes; | |
274 | } | |
275 | ||
1da177e4 | 276 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
155ffd07 | 277 | |
1da177e4 LT |
278 | /* |
279 | * Allocate the quotainfo structure inside the mount struct, and | |
280 | * create quotainode(s), and change/rev superblock if necessary. | |
281 | */ | |
53aa7915 DC |
282 | error = xfs_qm_init_quotainfo(mp); |
283 | if (error) { | |
1da177e4 LT |
284 | /* |
285 | * We must turn off quotas. | |
286 | */ | |
287 | ASSERT(mp->m_quotainfo == NULL); | |
288 | mp->m_qflags = 0; | |
289 | goto write_changes; | |
290 | } | |
291 | /* | |
292 | * If any of the quotas are not consistent, do a quotacheck. | |
293 | */ | |
4249023a | 294 | if (XFS_QM_NEED_QUOTACHECK(mp)) { |
53aa7915 DC |
295 | error = xfs_qm_quotacheck(mp); |
296 | if (error) { | |
297 | /* Quotacheck failed and disabled quotas. */ | |
298 | return; | |
1da177e4 | 299 | } |
1da177e4 | 300 | } |
646d5bda DD |
301 | /* |
302 | * If one type of quotas is off, then it will lose its | |
303 | * quotachecked status, since we won't be doing accounting for | |
304 | * that type anymore. | |
305 | */ | |
53aa7915 | 306 | if (!XFS_IS_UQUOTA_ON(mp)) |
646d5bda | 307 | mp->m_qflags &= ~XFS_UQUOTA_CHKD; |
83e782e1 CS |
308 | if (!XFS_IS_GQUOTA_ON(mp)) |
309 | mp->m_qflags &= ~XFS_GQUOTA_CHKD; | |
310 | if (!XFS_IS_PQUOTA_ON(mp)) | |
311 | mp->m_qflags &= ~XFS_PQUOTA_CHKD; | |
155ffd07 | 312 | |
1da177e4 LT |
313 | write_changes: |
314 | /* | |
3685c2a1 | 315 | * We actually don't have to acquire the m_sb_lock at all. |
1da177e4 LT |
316 | * This can only be called from mount, and that's single threaded. XXX |
317 | */ | |
3685c2a1 | 318 | spin_lock(&mp->m_sb_lock); |
1da177e4 LT |
319 | sbf = mp->m_sb.sb_qflags; |
320 | mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL; | |
3685c2a1 | 321 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
322 | |
323 | if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) { | |
324 | if (xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS)) { | |
325 | /* | |
326 | * We could only have been turning quotas off. | |
327 | * We aren't in very good shape actually because | |
328 | * the incore structures are convinced that quotas are | |
329 | * off, but the on disk superblock doesn't know that ! | |
330 | */ | |
331 | ASSERT(!(XFS_IS_QUOTA_RUNNING(mp))); | |
53487786 DC |
332 | xfs_alert(mp, "%s: Superblock update failed!", |
333 | __func__); | |
1da177e4 LT |
334 | } |
335 | } | |
336 | ||
337 | if (error) { | |
53487786 | 338 | xfs_warn(mp, "Failed to initialize disk quotas."); |
7d095257 | 339 | return; |
1da177e4 | 340 | } |
1da177e4 LT |
341 | } |
342 | ||
343 | /* | |
344 | * Called from the vfsops layer. | |
345 | */ | |
e57481dc | 346 | void |
1da177e4 LT |
347 | xfs_qm_unmount_quotas( |
348 | xfs_mount_t *mp) | |
349 | { | |
1da177e4 LT |
350 | /* |
351 | * Release the dquots that root inode, et al might be holding, | |
352 | * before we flush quotas and blow away the quotainfo structure. | |
353 | */ | |
354 | ASSERT(mp->m_rootip); | |
355 | xfs_qm_dqdetach(mp->m_rootip); | |
356 | if (mp->m_rbmip) | |
357 | xfs_qm_dqdetach(mp->m_rbmip); | |
358 | if (mp->m_rsumip) | |
359 | xfs_qm_dqdetach(mp->m_rsumip); | |
360 | ||
361 | /* | |
e57481dc | 362 | * Release the quota inodes. |
1da177e4 | 363 | */ |
1da177e4 | 364 | if (mp->m_quotainfo) { |
e57481dc CH |
365 | if (mp->m_quotainfo->qi_uquotaip) { |
366 | IRELE(mp->m_quotainfo->qi_uquotaip); | |
367 | mp->m_quotainfo->qi_uquotaip = NULL; | |
1da177e4 | 368 | } |
e57481dc CH |
369 | if (mp->m_quotainfo->qi_gquotaip) { |
370 | IRELE(mp->m_quotainfo->qi_gquotaip); | |
371 | mp->m_quotainfo->qi_gquotaip = NULL; | |
1da177e4 | 372 | } |
92f8ff73 CS |
373 | if (mp->m_quotainfo->qi_pquotaip) { |
374 | IRELE(mp->m_quotainfo->qi_pquotaip); | |
375 | mp->m_quotainfo->qi_pquotaip = NULL; | |
376 | } | |
1da177e4 | 377 | } |
1da177e4 LT |
378 | } |
379 | ||
1da177e4 LT |
380 | STATIC int |
381 | xfs_qm_dqattach_one( | |
382 | xfs_inode_t *ip, | |
383 | xfs_dqid_t id, | |
384 | uint type, | |
385 | uint doalloc, | |
1da177e4 LT |
386 | xfs_dquot_t *udqhint, /* hint */ |
387 | xfs_dquot_t **IO_idqpp) | |
388 | { | |
389 | xfs_dquot_t *dqp; | |
390 | int error; | |
391 | ||
579aa9ca | 392 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 393 | error = 0; |
8e9b6e7f | 394 | |
1da177e4 LT |
395 | /* |
396 | * See if we already have it in the inode itself. IO_idqpp is | |
397 | * &i_udquot or &i_gdquot. This made the code look weird, but | |
398 | * made the logic a lot simpler. | |
399 | */ | |
8e9b6e7f CH |
400 | dqp = *IO_idqpp; |
401 | if (dqp) { | |
0b1b213f | 402 | trace_xfs_dqattach_found(dqp); |
8e9b6e7f | 403 | return 0; |
1da177e4 LT |
404 | } |
405 | ||
406 | /* | |
407 | * udqhint is the i_udquot field in inode, and is non-NULL only | |
c8ad20ff | 408 | * when the type arg is group/project. Its purpose is to save a |
1da177e4 LT |
409 | * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside |
410 | * the user dquot. | |
411 | */ | |
8e9b6e7f CH |
412 | if (udqhint) { |
413 | ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ); | |
1da177e4 LT |
414 | xfs_dqlock(udqhint); |
415 | ||
8e9b6e7f CH |
416 | /* |
417 | * No need to take dqlock to look at the id. | |
418 | * | |
419 | * The ID can't change until it gets reclaimed, and it won't | |
420 | * be reclaimed as long as we have a ref from inode and we | |
421 | * hold the ilock. | |
422 | */ | |
92f8ff73 CS |
423 | if (type == XFS_DQ_GROUP) |
424 | dqp = udqhint->q_gdquot; | |
425 | else | |
426 | dqp = udqhint->q_pdquot; | |
8e9b6e7f | 427 | if (dqp && be32_to_cpu(dqp->q_core.d_id) == id) { |
8e9b6e7f | 428 | ASSERT(*IO_idqpp == NULL); |
8e9b6e7f | 429 | |
78e55892 | 430 | *IO_idqpp = xfs_qm_dqhold(dqp); |
1da177e4 | 431 | xfs_dqunlock(udqhint); |
8e9b6e7f | 432 | return 0; |
1da177e4 | 433 | } |
8e9b6e7f CH |
434 | |
435 | /* | |
436 | * We can't hold a dquot lock when we call the dqget code. | |
437 | * We'll deadlock in no time, because of (not conforming to) | |
438 | * lock ordering - the inodelock comes before any dquot lock, | |
439 | * and we may drop and reacquire the ilock in xfs_qm_dqget(). | |
440 | */ | |
1da177e4 | 441 | xfs_dqunlock(udqhint); |
8e9b6e7f CH |
442 | } |
443 | ||
1da177e4 LT |
444 | /* |
445 | * Find the dquot from somewhere. This bumps the | |
446 | * reference count of dquot and returns it locked. | |
447 | * This can return ENOENT if dquot didn't exist on | |
448 | * disk and we didn't ask it to allocate; | |
449 | * ESRCH if quotas got turned off suddenly. | |
450 | */ | |
db3e74b5 MH |
451 | error = xfs_qm_dqget(ip->i_mount, ip, id, type, |
452 | doalloc | XFS_QMOPT_DOWARN, &dqp); | |
8e9b6e7f CH |
453 | if (error) |
454 | return error; | |
1da177e4 | 455 | |
0b1b213f | 456 | trace_xfs_dqattach_get(dqp); |
8e9b6e7f | 457 | |
1da177e4 LT |
458 | /* |
459 | * dqget may have dropped and re-acquired the ilock, but it guarantees | |
460 | * that the dquot returned is the one that should go in the inode. | |
461 | */ | |
462 | *IO_idqpp = dqp; | |
8e9b6e7f CH |
463 | xfs_dqunlock(dqp); |
464 | return 0; | |
1da177e4 LT |
465 | } |
466 | ||
467 | ||
468 | /* | |
92f8ff73 CS |
469 | * Given a udquot and group/project type, attach the group/project |
470 | * dquot pointer to the udquot as a hint for future lookups. | |
1da177e4 LT |
471 | */ |
472 | STATIC void | |
92f8ff73 CS |
473 | xfs_qm_dqattach_hint( |
474 | struct xfs_inode *ip, | |
475 | int type) | |
1da177e4 | 476 | { |
92f8ff73 CS |
477 | struct xfs_dquot **dqhintp; |
478 | struct xfs_dquot *dqp; | |
479 | struct xfs_dquot *udq = ip->i_udquot; | |
480 | ||
481 | ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ); | |
1da177e4 | 482 | |
8e9b6e7f | 483 | xfs_dqlock(udq); |
1da177e4 | 484 | |
92f8ff73 CS |
485 | if (type == XFS_DQ_GROUP) { |
486 | dqp = ip->i_gdquot; | |
487 | dqhintp = &udq->q_gdquot; | |
488 | } else { | |
489 | dqp = ip->i_pdquot; | |
490 | dqhintp = &udq->q_pdquot; | |
491 | } | |
492 | ||
493 | if (*dqhintp) { | |
494 | struct xfs_dquot *tmp; | |
495 | ||
496 | if (*dqhintp == dqp) | |
ab680bb7 | 497 | goto done; |
1da177e4 | 498 | |
92f8ff73 CS |
499 | tmp = *dqhintp; |
500 | *dqhintp = NULL; | |
1da177e4 | 501 | xfs_qm_dqrele(tmp); |
1da177e4 | 502 | } |
8e9b6e7f | 503 | |
92f8ff73 | 504 | *dqhintp = xfs_qm_dqhold(dqp); |
ab680bb7 | 505 | done: |
8e9b6e7f | 506 | xfs_dqunlock(udq); |
1da177e4 LT |
507 | } |
508 | ||
b4d05e30 CH |
509 | static bool |
510 | xfs_qm_need_dqattach( | |
511 | struct xfs_inode *ip) | |
512 | { | |
513 | struct xfs_mount *mp = ip->i_mount; | |
514 | ||
515 | if (!XFS_IS_QUOTA_RUNNING(mp)) | |
516 | return false; | |
517 | if (!XFS_IS_QUOTA_ON(mp)) | |
518 | return false; | |
519 | if (!XFS_NOT_DQATTACHED(mp, ip)) | |
520 | return false; | |
9cad19d2 | 521 | if (xfs_is_quota_inode(&mp->m_sb, ip->i_ino)) |
b4d05e30 CH |
522 | return false; |
523 | return true; | |
524 | } | |
1da177e4 LT |
525 | |
526 | /* | |
c8ad20ff NS |
527 | * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON |
528 | * into account. | |
1da177e4 | 529 | * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed. |
1da177e4 LT |
530 | * Inode may get unlocked and relocked in here, and the caller must deal with |
531 | * the consequences. | |
532 | */ | |
533 | int | |
7d095257 | 534 | xfs_qm_dqattach_locked( |
1da177e4 LT |
535 | xfs_inode_t *ip, |
536 | uint flags) | |
537 | { | |
538 | xfs_mount_t *mp = ip->i_mount; | |
539 | uint nquotas = 0; | |
540 | int error = 0; | |
541 | ||
b4d05e30 | 542 | if (!xfs_qm_need_dqattach(ip)) |
014c2544 | 543 | return 0; |
1da177e4 | 544 | |
7d095257 | 545 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
546 | |
547 | if (XFS_IS_UQUOTA_ON(mp)) { | |
548 | error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER, | |
549 | flags & XFS_QMOPT_DQALLOC, | |
1da177e4 LT |
550 | NULL, &ip->i_udquot); |
551 | if (error) | |
552 | goto done; | |
553 | nquotas++; | |
554 | } | |
579aa9ca CH |
555 | |
556 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); | |
92f8ff73 CS |
557 | if (XFS_IS_GQUOTA_ON(mp)) { |
558 | error = xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, | |
1da177e4 | 559 | flags & XFS_QMOPT_DQALLOC, |
1da177e4 LT |
560 | ip->i_udquot, &ip->i_gdquot); |
561 | /* | |
562 | * Don't worry about the udquot that we may have | |
563 | * attached above. It'll get detached, if not already. | |
564 | */ | |
565 | if (error) | |
566 | goto done; | |
567 | nquotas++; | |
568 | } | |
569 | ||
92f8ff73 CS |
570 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
571 | if (XFS_IS_PQUOTA_ON(mp)) { | |
572 | error = xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ, | |
573 | flags & XFS_QMOPT_DQALLOC, | |
574 | ip->i_udquot, &ip->i_pdquot); | |
575 | /* | |
576 | * Don't worry about the udquot that we may have | |
577 | * attached above. It'll get detached, if not already. | |
578 | */ | |
579 | if (error) | |
580 | goto done; | |
581 | nquotas++; | |
582 | } | |
583 | ||
1da177e4 | 584 | /* |
92f8ff73 | 585 | * Attach this group/project quota to the user quota as a hint. |
1da177e4 LT |
586 | * This WON'T, in general, result in a thrash. |
587 | */ | |
92f8ff73 | 588 | if (nquotas > 1 && ip->i_udquot) { |
579aa9ca | 589 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
92f8ff73 CS |
590 | ASSERT(ip->i_gdquot || !XFS_IS_GQUOTA_ON(mp)); |
591 | ASSERT(ip->i_pdquot || !XFS_IS_PQUOTA_ON(mp)); | |
1da177e4 LT |
592 | |
593 | /* | |
ab680bb7 CH |
594 | * We do not have i_udquot locked at this point, but this check |
595 | * is OK since we don't depend on the i_gdquot to be accurate | |
596 | * 100% all the time. It is just a hint, and this will | |
597 | * succeed in general. | |
1da177e4 | 598 | */ |
ab680bb7 | 599 | if (ip->i_udquot->q_gdquot != ip->i_gdquot) |
92f8ff73 CS |
600 | xfs_qm_dqattach_hint(ip, XFS_DQ_GROUP); |
601 | ||
602 | if (ip->i_udquot->q_pdquot != ip->i_pdquot) | |
603 | xfs_qm_dqattach_hint(ip, XFS_DQ_PROJ); | |
1da177e4 LT |
604 | } |
605 | ||
7d095257 | 606 | done: |
ea15ab3c CH |
607 | #ifdef DEBUG |
608 | if (!error) { | |
1da177e4 LT |
609 | if (XFS_IS_UQUOTA_ON(mp)) |
610 | ASSERT(ip->i_udquot); | |
92f8ff73 | 611 | if (XFS_IS_GQUOTA_ON(mp)) |
1da177e4 | 612 | ASSERT(ip->i_gdquot); |
92f8ff73 CS |
613 | if (XFS_IS_PQUOTA_ON(mp)) |
614 | ASSERT(ip->i_pdquot); | |
1da177e4 | 615 | } |
7d095257 | 616 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 617 | #endif |
7d095257 CH |
618 | return error; |
619 | } | |
1da177e4 | 620 | |
7d095257 CH |
621 | int |
622 | xfs_qm_dqattach( | |
623 | struct xfs_inode *ip, | |
624 | uint flags) | |
625 | { | |
626 | int error; | |
627 | ||
b4d05e30 CH |
628 | if (!xfs_qm_need_dqattach(ip)) |
629 | return 0; | |
630 | ||
7d095257 CH |
631 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
632 | error = xfs_qm_dqattach_locked(ip, flags); | |
633 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1da177e4 | 634 | |
014c2544 | 635 | return error; |
1da177e4 LT |
636 | } |
637 | ||
638 | /* | |
639 | * Release dquots (and their references) if any. | |
640 | * The inode should be locked EXCL except when this's called by | |
641 | * xfs_ireclaim. | |
642 | */ | |
643 | void | |
644 | xfs_qm_dqdetach( | |
645 | xfs_inode_t *ip) | |
646 | { | |
92f8ff73 | 647 | if (!(ip->i_udquot || ip->i_gdquot || ip->i_pdquot)) |
1da177e4 LT |
648 | return; |
649 | ||
0b1b213f CH |
650 | trace_xfs_dquot_dqdetach(ip); |
651 | ||
9cad19d2 | 652 | ASSERT(!xfs_is_quota_inode(&ip->i_mount->m_sb, ip->i_ino)); |
1da177e4 LT |
653 | if (ip->i_udquot) { |
654 | xfs_qm_dqrele(ip->i_udquot); | |
655 | ip->i_udquot = NULL; | |
656 | } | |
657 | if (ip->i_gdquot) { | |
658 | xfs_qm_dqrele(ip->i_gdquot); | |
659 | ip->i_gdquot = NULL; | |
660 | } | |
92f8ff73 CS |
661 | if (ip->i_pdquot) { |
662 | xfs_qm_dqrele(ip->i_pdquot); | |
663 | ip->i_pdquot = NULL; | |
664 | } | |
1da177e4 LT |
665 | } |
666 | ||
3fe58f30 CH |
667 | int |
668 | xfs_qm_calc_dquots_per_chunk( | |
669 | struct xfs_mount *mp, | |
670 | unsigned int nbblks) /* basic block units */ | |
671 | { | |
672 | unsigned int ndquots; | |
673 | ||
674 | ASSERT(nbblks > 0); | |
675 | ndquots = BBTOB(nbblks); | |
676 | do_div(ndquots, sizeof(xfs_dqblk_t)); | |
677 | ||
678 | return ndquots; | |
679 | } | |
680 | ||
cd56a39a DC |
681 | struct xfs_qm_isolate { |
682 | struct list_head buffers; | |
683 | struct list_head dispose; | |
684 | }; | |
685 | ||
686 | static enum lru_status | |
687 | xfs_qm_dquot_isolate( | |
688 | struct list_head *item, | |
689 | spinlock_t *lru_lock, | |
690 | void *arg) | |
691 | { | |
692 | struct xfs_dquot *dqp = container_of(item, | |
693 | struct xfs_dquot, q_lru); | |
694 | struct xfs_qm_isolate *isol = arg; | |
695 | ||
696 | if (!xfs_dqlock_nowait(dqp)) | |
697 | goto out_miss_busy; | |
698 | ||
699 | /* | |
700 | * This dquot has acquired a reference in the meantime remove it from | |
701 | * the freelist and try again. | |
702 | */ | |
703 | if (dqp->q_nrefs) { | |
704 | xfs_dqunlock(dqp); | |
705 | XFS_STATS_INC(xs_qm_dqwants); | |
706 | ||
707 | trace_xfs_dqreclaim_want(dqp); | |
708 | list_del_init(&dqp->q_lru); | |
709 | XFS_STATS_DEC(xs_qm_dquot_unused); | |
35163417 | 710 | return LRU_REMOVED; |
cd56a39a DC |
711 | } |
712 | ||
713 | /* | |
714 | * If the dquot is dirty, flush it. If it's already being flushed, just | |
715 | * skip it so there is time for the IO to complete before we try to | |
716 | * reclaim it again on the next LRU pass. | |
717 | */ | |
718 | if (!xfs_dqflock_nowait(dqp)) { | |
719 | xfs_dqunlock(dqp); | |
720 | goto out_miss_busy; | |
721 | } | |
722 | ||
723 | if (XFS_DQ_IS_DIRTY(dqp)) { | |
724 | struct xfs_buf *bp = NULL; | |
725 | int error; | |
726 | ||
727 | trace_xfs_dqreclaim_dirty(dqp); | |
728 | ||
729 | /* we have to drop the LRU lock to flush the dquot */ | |
730 | spin_unlock(lru_lock); | |
731 | ||
732 | error = xfs_qm_dqflush(dqp, &bp); | |
733 | if (error) { | |
734 | xfs_warn(dqp->q_mount, "%s: dquot %p flush failed", | |
735 | __func__, dqp); | |
736 | goto out_unlock_dirty; | |
737 | } | |
738 | ||
739 | xfs_buf_delwri_queue(bp, &isol->buffers); | |
740 | xfs_buf_relse(bp); | |
741 | goto out_unlock_dirty; | |
742 | } | |
743 | xfs_dqfunlock(dqp); | |
744 | ||
745 | /* | |
746 | * Prevent lookups now that we are past the point of no return. | |
747 | */ | |
748 | dqp->dq_flags |= XFS_DQ_FREEING; | |
749 | xfs_dqunlock(dqp); | |
750 | ||
751 | ASSERT(dqp->q_nrefs == 0); | |
752 | list_move_tail(&dqp->q_lru, &isol->dispose); | |
753 | XFS_STATS_DEC(xs_qm_dquot_unused); | |
754 | trace_xfs_dqreclaim_done(dqp); | |
755 | XFS_STATS_INC(xs_qm_dqreclaims); | |
35163417 | 756 | return LRU_REMOVED; |
cd56a39a DC |
757 | |
758 | out_miss_busy: | |
759 | trace_xfs_dqreclaim_busy(dqp); | |
760 | XFS_STATS_INC(xs_qm_dqreclaim_misses); | |
35163417 | 761 | return LRU_SKIP; |
cd56a39a DC |
762 | |
763 | out_unlock_dirty: | |
764 | trace_xfs_dqreclaim_busy(dqp); | |
765 | XFS_STATS_INC(xs_qm_dqreclaim_misses); | |
35163417 DC |
766 | xfs_dqunlock(dqp); |
767 | spin_lock(lru_lock); | |
768 | return LRU_RETRY; | |
cd56a39a DC |
769 | } |
770 | ||
2f5b56f8 | 771 | static unsigned long |
cd56a39a DC |
772 | xfs_qm_shrink_scan( |
773 | struct shrinker *shrink, | |
774 | struct shrink_control *sc) | |
775 | { | |
776 | struct xfs_quotainfo *qi = container_of(shrink, | |
777 | struct xfs_quotainfo, qi_shrinker); | |
778 | struct xfs_qm_isolate isol; | |
2f5b56f8 | 779 | unsigned long freed; |
cd56a39a DC |
780 | int error; |
781 | unsigned long nr_to_scan = sc->nr_to_scan; | |
782 | ||
783 | if ((sc->gfp_mask & (__GFP_FS|__GFP_WAIT)) != (__GFP_FS|__GFP_WAIT)) | |
784 | return 0; | |
785 | ||
786 | INIT_LIST_HEAD(&isol.buffers); | |
787 | INIT_LIST_HEAD(&isol.dispose); | |
788 | ||
789 | freed = list_lru_walk_node(&qi->qi_lru, sc->nid, xfs_qm_dquot_isolate, &isol, | |
790 | &nr_to_scan); | |
791 | ||
792 | error = xfs_buf_delwri_submit(&isol.buffers); | |
793 | if (error) | |
794 | xfs_warn(NULL, "%s: dquot reclaim failed", __func__); | |
795 | ||
796 | while (!list_empty(&isol.dispose)) { | |
797 | struct xfs_dquot *dqp; | |
798 | ||
799 | dqp = list_first_entry(&isol.dispose, struct xfs_dquot, q_lru); | |
800 | list_del_init(&dqp->q_lru); | |
801 | xfs_qm_dqfree_one(dqp); | |
802 | } | |
803 | ||
804 | return freed; | |
805 | } | |
806 | ||
2f5b56f8 | 807 | static unsigned long |
cd56a39a DC |
808 | xfs_qm_shrink_count( |
809 | struct shrinker *shrink, | |
810 | struct shrink_control *sc) | |
811 | { | |
812 | struct xfs_quotainfo *qi = container_of(shrink, | |
813 | struct xfs_quotainfo, qi_shrinker); | |
814 | ||
815 | return list_lru_count_node(&qi->qi_lru, sc->nid); | |
816 | } | |
817 | ||
1da177e4 LT |
818 | /* |
819 | * This initializes all the quota information that's kept in the | |
820 | * mount structure | |
821 | */ | |
ba0f32d4 | 822 | STATIC int |
1da177e4 LT |
823 | xfs_qm_init_quotainfo( |
824 | xfs_mount_t *mp) | |
825 | { | |
826 | xfs_quotainfo_t *qinf; | |
827 | int error; | |
828 | xfs_dquot_t *dqp; | |
829 | ||
830 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
831 | ||
1da177e4 LT |
832 | qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP); |
833 | ||
5ca302c8 GC |
834 | if ((error = list_lru_init(&qinf->qi_lru))) { |
835 | kmem_free(qinf); | |
836 | mp->m_quotainfo = NULL; | |
837 | return error; | |
838 | } | |
839 | ||
1da177e4 LT |
840 | /* |
841 | * See if quotainodes are setup, and if not, allocate them, | |
842 | * and change the superblock accordingly. | |
843 | */ | |
844 | if ((error = xfs_qm_init_quotainos(mp))) { | |
5ca302c8 | 845 | list_lru_destroy(&qinf->qi_lru); |
f0e2d93c | 846 | kmem_free(qinf); |
1da177e4 | 847 | mp->m_quotainfo = NULL; |
014c2544 | 848 | return error; |
1da177e4 LT |
849 | } |
850 | ||
9f920f11 CH |
851 | INIT_RADIX_TREE(&qinf->qi_uquota_tree, GFP_NOFS); |
852 | INIT_RADIX_TREE(&qinf->qi_gquota_tree, GFP_NOFS); | |
92f8ff73 | 853 | INIT_RADIX_TREE(&qinf->qi_pquota_tree, GFP_NOFS); |
9f920f11 CH |
854 | mutex_init(&qinf->qi_tree_lock); |
855 | ||
1da177e4 | 856 | /* mutex used to serialize quotaoffs */ |
794ee1ba | 857 | mutex_init(&qinf->qi_quotaofflock); |
1da177e4 LT |
858 | |
859 | /* Precalc some constants */ | |
860 | qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
3fe58f30 CH |
861 | qinf->qi_dqperchunk = xfs_qm_calc_dquots_per_chunk(mp, |
862 | qinf->qi_dqchunklen); | |
1da177e4 LT |
863 | |
864 | mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); | |
865 | ||
866 | /* | |
867 | * We try to get the limits from the superuser's limits fields. | |
868 | * This is quite hacky, but it is standard quota practice. | |
7ae44407 | 869 | * |
1da177e4 LT |
870 | * We look at the USR dquot with id == 0 first, but if user quotas |
871 | * are not enabled we goto the GRP dquot with id == 0. | |
872 | * We don't really care to keep separate default limits for user | |
873 | * and group quotas, at least not at this point. | |
7ae44407 CH |
874 | * |
875 | * Since we may not have done a quotacheck by this point, just read | |
876 | * the dquot without attaching it to any hashtables or lists. | |
1da177e4 | 877 | */ |
7ae44407 CH |
878 | error = xfs_qm_dqread(mp, 0, |
879 | XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : | |
880 | (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP : | |
881 | XFS_DQ_PROJ), | |
882 | XFS_QMOPT_DOWARN, &dqp); | |
883 | if (!error) { | |
1da177e4 LT |
884 | xfs_disk_dquot_t *ddqp = &dqp->q_core; |
885 | ||
886 | /* | |
887 | * The warnings and timers set the grace period given to | |
888 | * a user or group before he or she can not perform any | |
889 | * more writing. If it is zero, a default is used. | |
890 | */ | |
1149d96a CH |
891 | qinf->qi_btimelimit = ddqp->d_btimer ? |
892 | be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT; | |
893 | qinf->qi_itimelimit = ddqp->d_itimer ? | |
894 | be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT; | |
895 | qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ? | |
896 | be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT; | |
897 | qinf->qi_bwarnlimit = ddqp->d_bwarns ? | |
898 | be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT; | |
899 | qinf->qi_iwarnlimit = ddqp->d_iwarns ? | |
900 | be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT; | |
901 | qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ? | |
902 | be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT; | |
903 | qinf->qi_bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit); | |
904 | qinf->qi_bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit); | |
905 | qinf->qi_ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit); | |
906 | qinf->qi_isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit); | |
907 | qinf->qi_rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit); | |
908 | qinf->qi_rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit); | |
1da177e4 | 909 | |
1da177e4 LT |
910 | xfs_qm_dqdestroy(dqp); |
911 | } else { | |
912 | qinf->qi_btimelimit = XFS_QM_BTIMELIMIT; | |
913 | qinf->qi_itimelimit = XFS_QM_ITIMELIMIT; | |
914 | qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT; | |
915 | qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT; | |
916 | qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT; | |
06d10dd9 | 917 | qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT; |
1da177e4 LT |
918 | } |
919 | ||
cd56a39a DC |
920 | qinf->qi_shrinker.count_objects = xfs_qm_shrink_count; |
921 | qinf->qi_shrinker.scan_objects = xfs_qm_shrink_scan; | |
f8739c3c | 922 | qinf->qi_shrinker.seeks = DEFAULT_SEEKS; |
cd56a39a | 923 | qinf->qi_shrinker.flags = SHRINKER_NUMA_AWARE; |
f8739c3c | 924 | register_shrinker(&qinf->qi_shrinker); |
014c2544 | 925 | return 0; |
1da177e4 LT |
926 | } |
927 | ||
928 | ||
929 | /* | |
930 | * Gets called when unmounting a filesystem or when all quotas get | |
931 | * turned off. | |
932 | * This purges the quota inodes, destroys locks and frees itself. | |
933 | */ | |
934 | void | |
935 | xfs_qm_destroy_quotainfo( | |
936 | xfs_mount_t *mp) | |
937 | { | |
938 | xfs_quotainfo_t *qi; | |
939 | ||
940 | qi = mp->m_quotainfo; | |
941 | ASSERT(qi != NULL); | |
1da177e4 | 942 | |
f8739c3c | 943 | unregister_shrinker(&qi->qi_shrinker); |
f5e1dd34 | 944 | list_lru_destroy(&qi->qi_lru); |
f8739c3c | 945 | |
1da177e4 | 946 | if (qi->qi_uquotaip) { |
26cc0021 | 947 | IRELE(qi->qi_uquotaip); |
1da177e4 LT |
948 | qi->qi_uquotaip = NULL; /* paranoia */ |
949 | } | |
950 | if (qi->qi_gquotaip) { | |
26cc0021 | 951 | IRELE(qi->qi_gquotaip); |
1da177e4 LT |
952 | qi->qi_gquotaip = NULL; |
953 | } | |
92f8ff73 CS |
954 | if (qi->qi_pquotaip) { |
955 | IRELE(qi->qi_pquotaip); | |
956 | qi->qi_pquotaip = NULL; | |
957 | } | |
1da177e4 | 958 | mutex_destroy(&qi->qi_quotaofflock); |
f0e2d93c | 959 | kmem_free(qi); |
1da177e4 LT |
960 | mp->m_quotainfo = NULL; |
961 | } | |
962 | ||
1da177e4 LT |
963 | /* |
964 | * Create an inode and return with a reference already taken, but unlocked | |
965 | * This is how we create quota inodes | |
966 | */ | |
967 | STATIC int | |
968 | xfs_qm_qino_alloc( | |
969 | xfs_mount_t *mp, | |
970 | xfs_inode_t **ip, | |
971 | __int64_t sbfields, | |
972 | uint flags) | |
973 | { | |
974 | xfs_trans_t *tp; | |
975 | int error; | |
1da177e4 LT |
976 | int committed; |
977 | ||
d892d586 CS |
978 | *ip = NULL; |
979 | /* | |
980 | * With superblock that doesn't have separate pquotino, we | |
981 | * share an inode between gquota and pquota. If the on-disk | |
982 | * superblock has GQUOTA and the filesystem is now mounted | |
983 | * with PQUOTA, just use sb_gquotino for sb_pquotino and | |
984 | * vice-versa. | |
985 | */ | |
986 | if (!xfs_sb_version_has_pquotino(&mp->m_sb) && | |
987 | (flags & (XFS_QMOPT_PQUOTA|XFS_QMOPT_GQUOTA))) { | |
988 | xfs_ino_t ino = NULLFSINO; | |
989 | ||
990 | if ((flags & XFS_QMOPT_PQUOTA) && | |
991 | (mp->m_sb.sb_gquotino != NULLFSINO)) { | |
992 | ino = mp->m_sb.sb_gquotino; | |
993 | ASSERT(mp->m_sb.sb_pquotino == NULLFSINO); | |
994 | } else if ((flags & XFS_QMOPT_GQUOTA) && | |
995 | (mp->m_sb.sb_pquotino != NULLFSINO)) { | |
996 | ino = mp->m_sb.sb_pquotino; | |
997 | ASSERT(mp->m_sb.sb_gquotino == NULLFSINO); | |
998 | } | |
999 | if (ino != NULLFSINO) { | |
1000 | error = xfs_iget(mp, NULL, ino, 0, 0, ip); | |
1001 | if (error) | |
1002 | return error; | |
1003 | mp->m_sb.sb_gquotino = NULLFSINO; | |
1004 | mp->m_sb.sb_pquotino = NULLFSINO; | |
1005 | } | |
1006 | } | |
1007 | ||
061f7209 | 1008 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE); |
3d3c8b52 JL |
1009 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_create, |
1010 | XFS_QM_QINOCREATE_SPACE_RES(mp), 0); | |
1011 | if (error) { | |
1da177e4 | 1012 | xfs_trans_cancel(tp, 0); |
014c2544 | 1013 | return error; |
1da177e4 | 1014 | } |
1da177e4 | 1015 | |
d892d586 CS |
1016 | if (!*ip) { |
1017 | error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip, | |
1018 | &committed); | |
1019 | if (error) { | |
1020 | xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | | |
1021 | XFS_TRANS_ABORT); | |
1022 | return error; | |
1023 | } | |
1da177e4 LT |
1024 | } |
1025 | ||
1da177e4 LT |
1026 | /* |
1027 | * Make the changes in the superblock, and log those too. | |
1028 | * sbfields arg may contain fields other than *QUOTINO; | |
1029 | * VERSIONNUM for example. | |
1030 | */ | |
3685c2a1 | 1031 | spin_lock(&mp->m_sb_lock); |
1da177e4 | 1032 | if (flags & XFS_QMOPT_SBVERSION) { |
62118709 | 1033 | ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); |
1da177e4 | 1034 | ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | |
d892d586 CS |
1035 | XFS_SB_GQUOTINO | XFS_SB_PQUOTINO | XFS_SB_QFLAGS)) == |
1036 | (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1037 | XFS_SB_GQUOTINO | XFS_SB_PQUOTINO | | |
1038 | XFS_SB_QFLAGS)); | |
1da177e4 | 1039 | |
62118709 | 1040 | xfs_sb_version_addquota(&mp->m_sb); |
1da177e4 LT |
1041 | mp->m_sb.sb_uquotino = NULLFSINO; |
1042 | mp->m_sb.sb_gquotino = NULLFSINO; | |
d892d586 | 1043 | mp->m_sb.sb_pquotino = NULLFSINO; |
1da177e4 | 1044 | |
d892d586 CS |
1045 | /* qflags will get updated fully _after_ quotacheck */ |
1046 | mp->m_sb.sb_qflags = mp->m_qflags & XFS_ALL_QUOTA_ACCT; | |
1da177e4 LT |
1047 | } |
1048 | if (flags & XFS_QMOPT_UQUOTA) | |
1049 | mp->m_sb.sb_uquotino = (*ip)->i_ino; | |
d892d586 | 1050 | else if (flags & XFS_QMOPT_GQUOTA) |
1da177e4 | 1051 | mp->m_sb.sb_gquotino = (*ip)->i_ino; |
d892d586 CS |
1052 | else |
1053 | mp->m_sb.sb_pquotino = (*ip)->i_ino; | |
3685c2a1 | 1054 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
1055 | xfs_mod_sb(tp, sbfields); |
1056 | ||
1c72bf90 | 1057 | if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) { |
53487786 | 1058 | xfs_alert(mp, "%s failed (error %d)!", __func__, error); |
014c2544 | 1059 | return error; |
1da177e4 | 1060 | } |
014c2544 | 1061 | return 0; |
1da177e4 LT |
1062 | } |
1063 | ||
1064 | ||
5b139738 | 1065 | STATIC void |
1da177e4 LT |
1066 | xfs_qm_reset_dqcounts( |
1067 | xfs_mount_t *mp, | |
1068 | xfs_buf_t *bp, | |
1069 | xfs_dqid_t id, | |
1070 | uint type) | |
1071 | { | |
6fcdc59d | 1072 | struct xfs_dqblk *dqb; |
1da177e4 LT |
1073 | int j; |
1074 | ||
0b1b213f CH |
1075 | trace_xfs_reset_dqcounts(bp, _RET_IP_); |
1076 | ||
1da177e4 LT |
1077 | /* |
1078 | * Reset all counters and timers. They'll be | |
1079 | * started afresh by xfs_qm_quotacheck. | |
1080 | */ | |
1081 | #ifdef DEBUG | |
1082 | j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
1083 | do_div(j, sizeof(xfs_dqblk_t)); | |
8a7b8a89 | 1084 | ASSERT(mp->m_quotainfo->qi_dqperchunk == j); |
1da177e4 | 1085 | #endif |
6fcdc59d | 1086 | dqb = bp->b_addr; |
8a7b8a89 | 1087 | for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { |
6fcdc59d DC |
1088 | struct xfs_disk_dquot *ddq; |
1089 | ||
1090 | ddq = (struct xfs_disk_dquot *)&dqb[j]; | |
1091 | ||
1da177e4 LT |
1092 | /* |
1093 | * Do a sanity check, and if needed, repair the dqblk. Don't | |
1094 | * output any warnings because it's perfectly possible to | |
c41564b5 | 1095 | * find uninitialised dquot blks. See comment in xfs_qm_dqcheck. |
1da177e4 | 1096 | */ |
a0fa2b67 | 1097 | (void) xfs_qm_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR, |
1da177e4 | 1098 | "xfs_quotacheck"); |
1149d96a CH |
1099 | ddq->d_bcount = 0; |
1100 | ddq->d_icount = 0; | |
1101 | ddq->d_rtbcount = 0; | |
1102 | ddq->d_btimer = 0; | |
1103 | ddq->d_itimer = 0; | |
1104 | ddq->d_rtbtimer = 0; | |
1105 | ddq->d_bwarns = 0; | |
1106 | ddq->d_iwarns = 0; | |
1107 | ddq->d_rtbwarns = 0; | |
6fcdc59d DC |
1108 | |
1109 | if (xfs_sb_version_hascrc(&mp->m_sb)) { | |
1110 | xfs_update_cksum((char *)&dqb[j], | |
1111 | sizeof(struct xfs_dqblk), | |
1112 | XFS_DQUOT_CRC_OFF); | |
1113 | } | |
1da177e4 | 1114 | } |
1da177e4 LT |
1115 | } |
1116 | ||
1117 | STATIC int | |
1118 | xfs_qm_dqiter_bufs( | |
43ff2122 CH |
1119 | struct xfs_mount *mp, |
1120 | xfs_dqid_t firstid, | |
1121 | xfs_fsblock_t bno, | |
1122 | xfs_filblks_t blkcnt, | |
1123 | uint flags, | |
1124 | struct list_head *buffer_list) | |
1da177e4 | 1125 | { |
43ff2122 CH |
1126 | struct xfs_buf *bp; |
1127 | int error; | |
1128 | int type; | |
1da177e4 LT |
1129 | |
1130 | ASSERT(blkcnt > 0); | |
c8ad20ff NS |
1131 | type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER : |
1132 | (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP); | |
1da177e4 LT |
1133 | error = 0; |
1134 | ||
1135 | /* | |
1136 | * Blkcnt arg can be a very big number, and might even be | |
1137 | * larger than the log itself. So, we have to break it up into | |
1138 | * manageable-sized transactions. | |
1139 | * Note that we don't start a permanent transaction here; we might | |
1140 | * not be able to get a log reservation for the whole thing up front, | |
1141 | * and we don't really care to either, because we just discard | |
1142 | * everything if we were to crash in the middle of this loop. | |
1143 | */ | |
1144 | while (blkcnt--) { | |
1145 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1146 | XFS_FSB_TO_DADDR(mp, bno), | |
c6319198 | 1147 | mp->m_quotainfo->qi_dqchunklen, 0, &bp, |
1813dd64 | 1148 | &xfs_dquot_buf_ops); |
1da177e4 | 1149 | |
3fe58f30 | 1150 | /* |
6fcdc59d DC |
1151 | * CRC and validation errors will return a EFSCORRUPTED here. If |
1152 | * this occurs, re-read without CRC validation so that we can | |
1153 | * repair the damage via xfs_qm_reset_dqcounts(). This process | |
1154 | * will leave a trace in the log indicating corruption has | |
1155 | * been detected. | |
3fe58f30 | 1156 | */ |
6fcdc59d DC |
1157 | if (error == EFSCORRUPTED) { |
1158 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1159 | XFS_FSB_TO_DADDR(mp, bno), | |
1160 | mp->m_quotainfo->qi_dqchunklen, 0, &bp, | |
1161 | NULL); | |
1162 | } | |
1163 | ||
1164 | if (error) | |
1165 | break; | |
1166 | ||
5b139738 | 1167 | xfs_qm_reset_dqcounts(mp, bp, firstid, type); |
43ff2122 | 1168 | xfs_buf_delwri_queue(bp, buffer_list); |
61551f1e | 1169 | xfs_buf_relse(bp); |
6fcdc59d DC |
1170 | |
1171 | /* goto the next block. */ | |
1da177e4 | 1172 | bno++; |
8a7b8a89 | 1173 | firstid += mp->m_quotainfo->qi_dqperchunk; |
1da177e4 | 1174 | } |
43ff2122 | 1175 | |
014c2544 | 1176 | return error; |
1da177e4 LT |
1177 | } |
1178 | ||
1179 | /* | |
c8ad20ff | 1180 | * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a |
1da177e4 LT |
1181 | * caller supplied function for every chunk of dquots that we find. |
1182 | */ | |
1183 | STATIC int | |
1184 | xfs_qm_dqiterate( | |
43ff2122 CH |
1185 | struct xfs_mount *mp, |
1186 | struct xfs_inode *qip, | |
1187 | uint flags, | |
1188 | struct list_head *buffer_list) | |
1da177e4 | 1189 | { |
43ff2122 | 1190 | struct xfs_bmbt_irec *map; |
1da177e4 LT |
1191 | int i, nmaps; /* number of map entries */ |
1192 | int error; /* return value */ | |
1193 | xfs_fileoff_t lblkno; | |
1194 | xfs_filblks_t maxlblkcnt; | |
1195 | xfs_dqid_t firstid; | |
1196 | xfs_fsblock_t rablkno; | |
1197 | xfs_filblks_t rablkcnt; | |
1198 | ||
1199 | error = 0; | |
1200 | /* | |
c41564b5 | 1201 | * This looks racy, but we can't keep an inode lock across a |
1da177e4 LT |
1202 | * trans_reserve. But, this gets called during quotacheck, and that |
1203 | * happens only at mount time which is single threaded. | |
1204 | */ | |
1205 | if (qip->i_d.di_nblocks == 0) | |
014c2544 | 1206 | return 0; |
1da177e4 LT |
1207 | |
1208 | map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP); | |
1209 | ||
1210 | lblkno = 0; | |
32972383 | 1211 | maxlblkcnt = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes); |
1da177e4 LT |
1212 | do { |
1213 | nmaps = XFS_DQITER_MAP_SIZE; | |
1214 | /* | |
1215 | * We aren't changing the inode itself. Just changing | |
1216 | * some of its data. No new blocks are added here, and | |
1217 | * the inode is never added to the transaction. | |
1218 | */ | |
1219 | xfs_ilock(qip, XFS_ILOCK_SHARED); | |
5c8ed202 DC |
1220 | error = xfs_bmapi_read(qip, lblkno, maxlblkcnt - lblkno, |
1221 | map, &nmaps, 0); | |
1da177e4 LT |
1222 | xfs_iunlock(qip, XFS_ILOCK_SHARED); |
1223 | if (error) | |
1224 | break; | |
1225 | ||
1226 | ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); | |
1227 | for (i = 0; i < nmaps; i++) { | |
1228 | ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); | |
1229 | ASSERT(map[i].br_blockcount); | |
1230 | ||
1231 | ||
1232 | lblkno += map[i].br_blockcount; | |
1233 | ||
1234 | if (map[i].br_startblock == HOLESTARTBLOCK) | |
1235 | continue; | |
1236 | ||
1237 | firstid = (xfs_dqid_t) map[i].br_startoff * | |
8a7b8a89 | 1238 | mp->m_quotainfo->qi_dqperchunk; |
1da177e4 LT |
1239 | /* |
1240 | * Do a read-ahead on the next extent. | |
1241 | */ | |
1242 | if ((i+1 < nmaps) && | |
1243 | (map[i+1].br_startblock != HOLESTARTBLOCK)) { | |
1244 | rablkcnt = map[i+1].br_blockcount; | |
1245 | rablkno = map[i+1].br_startblock; | |
1246 | while (rablkcnt--) { | |
1a1a3e97 | 1247 | xfs_buf_readahead(mp->m_ddev_targp, |
1da177e4 | 1248 | XFS_FSB_TO_DADDR(mp, rablkno), |
c3f8fc73 DC |
1249 | mp->m_quotainfo->qi_dqchunklen, |
1250 | NULL); | |
1da177e4 LT |
1251 | rablkno++; |
1252 | } | |
1253 | } | |
1254 | /* | |
1255 | * Iterate thru all the blks in the extent and | |
1256 | * reset the counters of all the dquots inside them. | |
1257 | */ | |
43ff2122 CH |
1258 | error = xfs_qm_dqiter_bufs(mp, firstid, |
1259 | map[i].br_startblock, | |
1260 | map[i].br_blockcount, | |
1261 | flags, buffer_list); | |
1262 | if (error) | |
1263 | goto out; | |
1da177e4 | 1264 | } |
1da177e4 LT |
1265 | } while (nmaps > 0); |
1266 | ||
43ff2122 | 1267 | out: |
f0e2d93c | 1268 | kmem_free(map); |
014c2544 | 1269 | return error; |
1da177e4 LT |
1270 | } |
1271 | ||
1272 | /* | |
1273 | * Called by dqusage_adjust in doing a quotacheck. | |
52fda114 CH |
1274 | * |
1275 | * Given the inode, and a dquot id this updates both the incore dqout as well | |
1276 | * as the buffer copy. This is so that once the quotacheck is done, we can | |
1277 | * just log all the buffers, as opposed to logging numerous updates to | |
1278 | * individual dquots. | |
1da177e4 | 1279 | */ |
52fda114 | 1280 | STATIC int |
1da177e4 | 1281 | xfs_qm_quotacheck_dqadjust( |
52fda114 CH |
1282 | struct xfs_inode *ip, |
1283 | xfs_dqid_t id, | |
1284 | uint type, | |
1da177e4 LT |
1285 | xfs_qcnt_t nblks, |
1286 | xfs_qcnt_t rtblks) | |
1287 | { | |
52fda114 CH |
1288 | struct xfs_mount *mp = ip->i_mount; |
1289 | struct xfs_dquot *dqp; | |
1290 | int error; | |
1291 | ||
1292 | error = xfs_qm_dqget(mp, ip, id, type, | |
1293 | XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp); | |
1294 | if (error) { | |
1295 | /* | |
1296 | * Shouldn't be able to turn off quotas here. | |
1297 | */ | |
1298 | ASSERT(error != ESRCH); | |
1299 | ASSERT(error != ENOENT); | |
1300 | return error; | |
1301 | } | |
0b1b213f CH |
1302 | |
1303 | trace_xfs_dqadjust(dqp); | |
1304 | ||
1da177e4 LT |
1305 | /* |
1306 | * Adjust the inode count and the block count to reflect this inode's | |
1307 | * resource usage. | |
1308 | */ | |
413d57c9 | 1309 | be64_add_cpu(&dqp->q_core.d_icount, 1); |
1da177e4 LT |
1310 | dqp->q_res_icount++; |
1311 | if (nblks) { | |
413d57c9 | 1312 | be64_add_cpu(&dqp->q_core.d_bcount, nblks); |
1da177e4 LT |
1313 | dqp->q_res_bcount += nblks; |
1314 | } | |
1315 | if (rtblks) { | |
413d57c9 | 1316 | be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks); |
1da177e4 LT |
1317 | dqp->q_res_rtbcount += rtblks; |
1318 | } | |
1319 | ||
1320 | /* | |
1321 | * Set default limits, adjust timers (since we changed usages) | |
191f8488 CH |
1322 | * |
1323 | * There are no timers for the default values set in the root dquot. | |
1da177e4 | 1324 | */ |
191f8488 | 1325 | if (dqp->q_core.d_id) { |
4b6eae2e | 1326 | xfs_qm_adjust_dqlimits(mp, dqp); |
52fda114 | 1327 | xfs_qm_adjust_dqtimers(mp, &dqp->q_core); |
1da177e4 LT |
1328 | } |
1329 | ||
1330 | dqp->dq_flags |= XFS_DQ_DIRTY; | |
52fda114 CH |
1331 | xfs_qm_dqput(dqp); |
1332 | return 0; | |
1da177e4 LT |
1333 | } |
1334 | ||
1335 | STATIC int | |
1336 | xfs_qm_get_rtblks( | |
1337 | xfs_inode_t *ip, | |
1338 | xfs_qcnt_t *O_rtblks) | |
1339 | { | |
1340 | xfs_filblks_t rtblks; /* total rt blks */ | |
4eea22f0 | 1341 | xfs_extnum_t idx; /* extent record index */ |
1da177e4 LT |
1342 | xfs_ifork_t *ifp; /* inode fork pointer */ |
1343 | xfs_extnum_t nextents; /* number of extent entries */ | |
1da177e4 LT |
1344 | int error; |
1345 | ||
1346 | ASSERT(XFS_IS_REALTIME_INODE(ip)); | |
1347 | ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); | |
1348 | if (!(ifp->if_flags & XFS_IFEXTENTS)) { | |
1349 | if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK))) | |
014c2544 | 1350 | return error; |
1da177e4 LT |
1351 | } |
1352 | rtblks = 0; | |
4eea22f0 | 1353 | nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); |
a6f64d4a CH |
1354 | for (idx = 0; idx < nextents; idx++) |
1355 | rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx)); | |
1da177e4 | 1356 | *O_rtblks = (xfs_qcnt_t)rtblks; |
014c2544 | 1357 | return 0; |
1da177e4 LT |
1358 | } |
1359 | ||
1360 | /* | |
1361 | * callback routine supplied to bulkstat(). Given an inumber, find its | |
1362 | * dquots and update them to account for resources taken by that inode. | |
1363 | */ | |
1364 | /* ARGSUSED */ | |
1365 | STATIC int | |
1366 | xfs_qm_dqusage_adjust( | |
1367 | xfs_mount_t *mp, /* mount point for filesystem */ | |
1368 | xfs_ino_t ino, /* inode number to get data for */ | |
1369 | void __user *buffer, /* not used */ | |
1370 | int ubsize, /* not used */ | |
1da177e4 | 1371 | int *ubused, /* not used */ |
1da177e4 LT |
1372 | int *res) /* result code value */ |
1373 | { | |
1374 | xfs_inode_t *ip; | |
52fda114 | 1375 | xfs_qcnt_t nblks, rtblks = 0; |
1da177e4 LT |
1376 | int error; |
1377 | ||
1378 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
1379 | ||
1380 | /* | |
1381 | * rootino must have its resources accounted for, not so with the quota | |
1382 | * inodes. | |
1383 | */ | |
9cad19d2 | 1384 | if (xfs_is_quota_inode(&mp->m_sb, ino)) { |
1da177e4 LT |
1385 | *res = BULKSTAT_RV_NOTHING; |
1386 | return XFS_ERROR(EINVAL); | |
1387 | } | |
1388 | ||
1389 | /* | |
1390 | * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget | |
1391 | * interface expects the inode to be exclusively locked because that's | |
1392 | * the case in all other instances. It's OK that we do this because | |
1393 | * quotacheck is done only at mount time. | |
1394 | */ | |
52fda114 CH |
1395 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_EXCL, &ip); |
1396 | if (error) { | |
1da177e4 | 1397 | *res = BULKSTAT_RV_NOTHING; |
014c2544 | 1398 | return error; |
1da177e4 LT |
1399 | } |
1400 | ||
52fda114 | 1401 | ASSERT(ip->i_delayed_blks == 0); |
1da177e4 | 1402 | |
52fda114 | 1403 | if (XFS_IS_REALTIME_INODE(ip)) { |
1da177e4 LT |
1404 | /* |
1405 | * Walk thru the extent list and count the realtime blocks. | |
1406 | */ | |
52fda114 CH |
1407 | error = xfs_qm_get_rtblks(ip, &rtblks); |
1408 | if (error) | |
1409 | goto error0; | |
1da177e4 | 1410 | } |
1da177e4 | 1411 | |
52fda114 | 1412 | nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks; |
1da177e4 LT |
1413 | |
1414 | /* | |
1415 | * Add the (disk blocks and inode) resources occupied by this | |
1416 | * inode to its dquots. We do this adjustment in the incore dquot, | |
1417 | * and also copy the changes to its buffer. | |
1418 | * We don't care about putting these changes in a transaction | |
1419 | * envelope because if we crash in the middle of a 'quotacheck' | |
1420 | * we have to start from the beginning anyway. | |
1421 | * Once we're done, we'll log all the dquot bufs. | |
1422 | * | |
c41564b5 | 1423 | * The *QUOTA_ON checks below may look pretty racy, but quotachecks |
1da177e4 LT |
1424 | * and quotaoffs don't race. (Quotachecks happen at mount time only). |
1425 | */ | |
1426 | if (XFS_IS_UQUOTA_ON(mp)) { | |
52fda114 CH |
1427 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid, |
1428 | XFS_DQ_USER, nblks, rtblks); | |
1429 | if (error) | |
1430 | goto error0; | |
1da177e4 | 1431 | } |
52fda114 CH |
1432 | |
1433 | if (XFS_IS_GQUOTA_ON(mp)) { | |
1434 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid, | |
1435 | XFS_DQ_GROUP, nblks, rtblks); | |
1436 | if (error) | |
1437 | goto error0; | |
1da177e4 | 1438 | } |
1da177e4 | 1439 | |
52fda114 | 1440 | if (XFS_IS_PQUOTA_ON(mp)) { |
6743099c | 1441 | error = xfs_qm_quotacheck_dqadjust(ip, xfs_get_projid(ip), |
52fda114 CH |
1442 | XFS_DQ_PROJ, nblks, rtblks); |
1443 | if (error) | |
1444 | goto error0; | |
1445 | } | |
1446 | ||
1447 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1448 | IRELE(ip); | |
1da177e4 | 1449 | *res = BULKSTAT_RV_DIDONE; |
014c2544 | 1450 | return 0; |
52fda114 CH |
1451 | |
1452 | error0: | |
1453 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1454 | IRELE(ip); | |
1455 | *res = BULKSTAT_RV_GIVEUP; | |
1456 | return error; | |
1da177e4 LT |
1457 | } |
1458 | ||
b84a3a96 CH |
1459 | STATIC int |
1460 | xfs_qm_flush_one( | |
43ff2122 CH |
1461 | struct xfs_dquot *dqp, |
1462 | void *data) | |
b84a3a96 | 1463 | { |
43ff2122 | 1464 | struct list_head *buffer_list = data; |
fe7257fd | 1465 | struct xfs_buf *bp = NULL; |
b84a3a96 CH |
1466 | int error = 0; |
1467 | ||
1468 | xfs_dqlock(dqp); | |
1469 | if (dqp->dq_flags & XFS_DQ_FREEING) | |
1470 | goto out_unlock; | |
1471 | if (!XFS_DQ_IS_DIRTY(dqp)) | |
1472 | goto out_unlock; | |
1473 | ||
43ff2122 | 1474 | xfs_dqflock(dqp); |
fe7257fd CH |
1475 | error = xfs_qm_dqflush(dqp, &bp); |
1476 | if (error) | |
1477 | goto out_unlock; | |
b84a3a96 | 1478 | |
43ff2122 | 1479 | xfs_buf_delwri_queue(bp, buffer_list); |
fe7257fd | 1480 | xfs_buf_relse(bp); |
b84a3a96 CH |
1481 | out_unlock: |
1482 | xfs_dqunlock(dqp); | |
1483 | return error; | |
1484 | } | |
1485 | ||
1da177e4 LT |
1486 | /* |
1487 | * Walk thru all the filesystem inodes and construct a consistent view | |
1488 | * of the disk quota world. If the quotacheck fails, disable quotas. | |
1489 | */ | |
1490 | int | |
1491 | xfs_qm_quotacheck( | |
1492 | xfs_mount_t *mp) | |
1493 | { | |
113a5683 CS |
1494 | int done, count, error, error2; |
1495 | xfs_ino_t lastino; | |
1496 | size_t structsz; | |
1497 | uint flags; | |
1498 | LIST_HEAD (buffer_list); | |
1499 | struct xfs_inode *uip = mp->m_quotainfo->qi_uquotaip; | |
1500 | struct xfs_inode *gip = mp->m_quotainfo->qi_gquotaip; | |
92f8ff73 | 1501 | struct xfs_inode *pip = mp->m_quotainfo->qi_pquotaip; |
1da177e4 LT |
1502 | |
1503 | count = INT_MAX; | |
1504 | structsz = 1; | |
1505 | lastino = 0; | |
1506 | flags = 0; | |
1507 | ||
92f8ff73 | 1508 | ASSERT(uip || gip || pip); |
1da177e4 LT |
1509 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1510 | ||
0b932ccc | 1511 | xfs_notice(mp, "Quotacheck needed: Please wait."); |
1da177e4 LT |
1512 | |
1513 | /* | |
c8ad20ff | 1514 | * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset |
1da177e4 LT |
1515 | * their counters to zero. We need a clean slate. |
1516 | * We don't log our changes till later. | |
1517 | */ | |
8a7b8a89 | 1518 | if (uip) { |
43ff2122 CH |
1519 | error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA, |
1520 | &buffer_list); | |
8a7b8a89 | 1521 | if (error) |
1da177e4 LT |
1522 | goto error_return; |
1523 | flags |= XFS_UQUOTA_CHKD; | |
1524 | } | |
1525 | ||
8a7b8a89 | 1526 | if (gip) { |
92f8ff73 | 1527 | error = xfs_qm_dqiterate(mp, gip, XFS_QMOPT_GQUOTA, |
43ff2122 | 1528 | &buffer_list); |
8a7b8a89 | 1529 | if (error) |
1da177e4 | 1530 | goto error_return; |
92f8ff73 CS |
1531 | flags |= XFS_GQUOTA_CHKD; |
1532 | } | |
1533 | ||
1534 | if (pip) { | |
1535 | error = xfs_qm_dqiterate(mp, pip, XFS_QMOPT_PQUOTA, | |
1536 | &buffer_list); | |
1537 | if (error) | |
1538 | goto error_return; | |
1539 | flags |= XFS_PQUOTA_CHKD; | |
1da177e4 LT |
1540 | } |
1541 | ||
1542 | do { | |
1543 | /* | |
1544 | * Iterate thru all the inodes in the file system, | |
1545 | * adjusting the corresponding dquot counters in core. | |
1546 | */ | |
7dce11db CH |
1547 | error = xfs_bulkstat(mp, &lastino, &count, |
1548 | xfs_qm_dqusage_adjust, | |
1549 | structsz, NULL, &done); | |
1550 | if (error) | |
1da177e4 LT |
1551 | break; |
1552 | ||
7dce11db | 1553 | } while (!done); |
1da177e4 | 1554 | |
4b8879df | 1555 | /* |
b84a3a96 CH |
1556 | * We've made all the changes that we need to make incore. Flush them |
1557 | * down to disk buffers if everything was updated successfully. | |
4b8879df | 1558 | */ |
43ff2122 CH |
1559 | if (XFS_IS_UQUOTA_ON(mp)) { |
1560 | error = xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_flush_one, | |
1561 | &buffer_list); | |
1562 | } | |
b84a3a96 | 1563 | if (XFS_IS_GQUOTA_ON(mp)) { |
43ff2122 CH |
1564 | error2 = xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_flush_one, |
1565 | &buffer_list); | |
b84a3a96 CH |
1566 | if (!error) |
1567 | error = error2; | |
1568 | } | |
1569 | if (XFS_IS_PQUOTA_ON(mp)) { | |
43ff2122 CH |
1570 | error2 = xfs_qm_dquot_walk(mp, XFS_DQ_PROJ, xfs_qm_flush_one, |
1571 | &buffer_list); | |
b84a3a96 CH |
1572 | if (!error) |
1573 | error = error2; | |
1574 | } | |
4b8879df | 1575 | |
43ff2122 CH |
1576 | error2 = xfs_buf_delwri_submit(&buffer_list); |
1577 | if (!error) | |
1578 | error = error2; | |
1579 | ||
1da177e4 LT |
1580 | /* |
1581 | * We can get this error if we couldn't do a dquot allocation inside | |
1582 | * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the | |
1583 | * dirty dquots that might be cached, we just want to get rid of them | |
1584 | * and turn quotaoff. The dquots won't be attached to any of the inodes | |
1585 | * at this point (because we intentionally didn't in dqget_noattach). | |
1586 | */ | |
1587 | if (error) { | |
8112e9dc | 1588 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 LT |
1589 | goto error_return; |
1590 | } | |
1da177e4 | 1591 | |
1da177e4 LT |
1592 | /* |
1593 | * If one type of quotas is off, then it will lose its | |
1594 | * quotachecked status, since we won't be doing accounting for | |
1595 | * that type anymore. | |
1596 | */ | |
4177af3a | 1597 | mp->m_qflags &= ~XFS_ALL_QUOTA_CHKD; |
1da177e4 LT |
1598 | mp->m_qflags |= flags; |
1599 | ||
1da177e4 | 1600 | error_return: |
43ff2122 CH |
1601 | while (!list_empty(&buffer_list)) { |
1602 | struct xfs_buf *bp = | |
1603 | list_first_entry(&buffer_list, struct xfs_buf, b_list); | |
1604 | list_del_init(&bp->b_list); | |
1605 | xfs_buf_relse(bp); | |
1606 | } | |
1607 | ||
1da177e4 | 1608 | if (error) { |
0b932ccc DC |
1609 | xfs_warn(mp, |
1610 | "Quotacheck: Unsuccessful (Error %d): Disabling quotas.", | |
1611 | error); | |
1da177e4 LT |
1612 | /* |
1613 | * We must turn off quotas. | |
1614 | */ | |
1615 | ASSERT(mp->m_quotainfo != NULL); | |
1da177e4 | 1616 | xfs_qm_destroy_quotainfo(mp); |
31d5577b | 1617 | if (xfs_mount_reset_sbqflags(mp)) { |
0b932ccc DC |
1618 | xfs_warn(mp, |
1619 | "Quotacheck: Failed to reset quota flags."); | |
31d5577b | 1620 | } |
0b932ccc DC |
1621 | } else |
1622 | xfs_notice(mp, "Quotacheck: Done."); | |
1da177e4 LT |
1623 | return (error); |
1624 | } | |
1625 | ||
1626 | /* | |
1627 | * This is called after the superblock has been read in and we're ready to | |
1628 | * iget the quota inodes. | |
1629 | */ | |
1630 | STATIC int | |
1631 | xfs_qm_init_quotainos( | |
1632 | xfs_mount_t *mp) | |
1633 | { | |
113a5683 CS |
1634 | struct xfs_inode *uip = NULL; |
1635 | struct xfs_inode *gip = NULL; | |
92f8ff73 | 1636 | struct xfs_inode *pip = NULL; |
113a5683 CS |
1637 | int error; |
1638 | __int64_t sbflags = 0; | |
1639 | uint flags = 0; | |
1da177e4 LT |
1640 | |
1641 | ASSERT(mp->m_quotainfo); | |
1da177e4 LT |
1642 | |
1643 | /* | |
1644 | * Get the uquota and gquota inodes | |
1645 | */ | |
62118709 | 1646 | if (xfs_sb_version_hasquota(&mp->m_sb)) { |
1da177e4 LT |
1647 | if (XFS_IS_UQUOTA_ON(mp) && |
1648 | mp->m_sb.sb_uquotino != NULLFSINO) { | |
1649 | ASSERT(mp->m_sb.sb_uquotino > 0); | |
113a5683 CS |
1650 | error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, |
1651 | 0, 0, &uip); | |
1652 | if (error) | |
1da177e4 LT |
1653 | return XFS_ERROR(error); |
1654 | } | |
92f8ff73 | 1655 | if (XFS_IS_GQUOTA_ON(mp) && |
1da177e4 LT |
1656 | mp->m_sb.sb_gquotino != NULLFSINO) { |
1657 | ASSERT(mp->m_sb.sb_gquotino > 0); | |
113a5683 CS |
1658 | error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, |
1659 | 0, 0, &gip); | |
1660 | if (error) | |
1661 | goto error_rele; | |
1da177e4 | 1662 | } |
92f8ff73 | 1663 | if (XFS_IS_PQUOTA_ON(mp) && |
d892d586 CS |
1664 | mp->m_sb.sb_pquotino != NULLFSINO) { |
1665 | ASSERT(mp->m_sb.sb_pquotino > 0); | |
1666 | error = xfs_iget(mp, NULL, mp->m_sb.sb_pquotino, | |
92f8ff73 CS |
1667 | 0, 0, &pip); |
1668 | if (error) | |
1669 | goto error_rele; | |
1670 | } | |
1da177e4 LT |
1671 | } else { |
1672 | flags |= XFS_QMOPT_SBVERSION; | |
1673 | sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
d892d586 CS |
1674 | XFS_SB_GQUOTINO | XFS_SB_PQUOTINO | |
1675 | XFS_SB_QFLAGS); | |
1da177e4 LT |
1676 | } |
1677 | ||
1678 | /* | |
92f8ff73 | 1679 | * Create the three inodes, if they don't exist already. The changes |
1da177e4 LT |
1680 | * made above will get added to a transaction and logged in one of |
1681 | * the qino_alloc calls below. If the device is readonly, | |
1682 | * temporarily switch to read-write to do this. | |
1683 | */ | |
1684 | if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { | |
113a5683 | 1685 | error = xfs_qm_qino_alloc(mp, &uip, |
1da177e4 | 1686 | sbflags | XFS_SB_UQUOTINO, |
113a5683 CS |
1687 | flags | XFS_QMOPT_UQUOTA); |
1688 | if (error) | |
1689 | goto error_rele; | |
1da177e4 LT |
1690 | |
1691 | flags &= ~XFS_QMOPT_SBVERSION; | |
1692 | } | |
92f8ff73 | 1693 | if (XFS_IS_GQUOTA_ON(mp) && gip == NULL) { |
c8ad20ff | 1694 | error = xfs_qm_qino_alloc(mp, &gip, |
92f8ff73 CS |
1695 | sbflags | XFS_SB_GQUOTINO, |
1696 | flags | XFS_QMOPT_GQUOTA); | |
1697 | if (error) | |
1698 | goto error_rele; | |
1699 | ||
1700 | flags &= ~XFS_QMOPT_SBVERSION; | |
1701 | } | |
1702 | if (XFS_IS_PQUOTA_ON(mp) && pip == NULL) { | |
92f8ff73 | 1703 | error = xfs_qm_qino_alloc(mp, &pip, |
d892d586 | 1704 | sbflags | XFS_SB_PQUOTINO, |
92f8ff73 | 1705 | flags | XFS_QMOPT_PQUOTA); |
113a5683 CS |
1706 | if (error) |
1707 | goto error_rele; | |
1da177e4 LT |
1708 | } |
1709 | ||
8a7b8a89 CH |
1710 | mp->m_quotainfo->qi_uquotaip = uip; |
1711 | mp->m_quotainfo->qi_gquotaip = gip; | |
92f8ff73 | 1712 | mp->m_quotainfo->qi_pquotaip = pip; |
1da177e4 | 1713 | |
014c2544 | 1714 | return 0; |
113a5683 CS |
1715 | |
1716 | error_rele: | |
1717 | if (uip) | |
1718 | IRELE(uip); | |
1719 | if (gip) | |
1720 | IRELE(gip); | |
92f8ff73 CS |
1721 | if (pip) |
1722 | IRELE(pip); | |
113a5683 | 1723 | return XFS_ERROR(error); |
1da177e4 LT |
1724 | } |
1725 | ||
92b2e5b3 CH |
1726 | STATIC void |
1727 | xfs_qm_dqfree_one( | |
1728 | struct xfs_dquot *dqp) | |
1729 | { | |
1730 | struct xfs_mount *mp = dqp->q_mount; | |
1731 | struct xfs_quotainfo *qi = mp->m_quotainfo; | |
1da177e4 | 1732 | |
9f920f11 | 1733 | mutex_lock(&qi->qi_tree_lock); |
329e0875 | 1734 | radix_tree_delete(xfs_dquot_tree(qi, dqp->q_core.d_flags), |
9f920f11 | 1735 | be32_to_cpu(dqp->q_core.d_id)); |
368e1361 | 1736 | |
92b2e5b3 | 1737 | qi->qi_dquots--; |
b84a3a96 | 1738 | mutex_unlock(&qi->qi_tree_lock); |
92b2e5b3 CH |
1739 | |
1740 | xfs_qm_dqdestroy(dqp); | |
1741 | } | |
1742 | ||
1da177e4 LT |
1743 | /* |
1744 | * Start a transaction and write the incore superblock changes to | |
1745 | * disk. flags parameter indicates which fields have changed. | |
1746 | */ | |
1747 | int | |
1748 | xfs_qm_write_sb_changes( | |
1749 | xfs_mount_t *mp, | |
1750 | __int64_t flags) | |
1751 | { | |
1752 | xfs_trans_t *tp; | |
1753 | int error; | |
1754 | ||
1da177e4 | 1755 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); |
3d3c8b52 | 1756 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_sbchange, 0, 0); |
f910a8c6 | 1757 | if (error) { |
1da177e4 | 1758 | xfs_trans_cancel(tp, 0); |
014c2544 | 1759 | return error; |
1da177e4 LT |
1760 | } |
1761 | ||
1762 | xfs_mod_sb(tp, flags); | |
e5720eec | 1763 | error = xfs_trans_commit(tp, 0); |
1da177e4 | 1764 | |
e5720eec | 1765 | return error; |
1da177e4 LT |
1766 | } |
1767 | ||
1768 | ||
1769 | /* --------------- utility functions for vnodeops ---------------- */ | |
1770 | ||
1771 | ||
1772 | /* | |
6c77b0ea | 1773 | * Given an inode, a uid, gid and prid make sure that we have |
1da177e4 LT |
1774 | * allocated relevant dquot(s) on disk, and that we won't exceed inode |
1775 | * quotas by creating this file. | |
1776 | * This also attaches dquot(s) to the given inode after locking it, | |
1777 | * and returns the dquots corresponding to the uid and/or gid. | |
1778 | * | |
1779 | * in : inode (unlocked) | |
1780 | * out : udquot, gdquot with references taken and unlocked | |
1781 | */ | |
1782 | int | |
1783 | xfs_qm_vop_dqalloc( | |
7d095257 | 1784 | struct xfs_inode *ip, |
7aab1b28 DE |
1785 | xfs_dqid_t uid, |
1786 | xfs_dqid_t gid, | |
7d095257 CH |
1787 | prid_t prid, |
1788 | uint flags, | |
1789 | struct xfs_dquot **O_udqpp, | |
92f8ff73 CS |
1790 | struct xfs_dquot **O_gdqpp, |
1791 | struct xfs_dquot **O_pdqpp) | |
1da177e4 | 1792 | { |
7d095257 | 1793 | struct xfs_mount *mp = ip->i_mount; |
113a5683 CS |
1794 | struct xfs_dquot *uq = NULL; |
1795 | struct xfs_dquot *gq = NULL; | |
92f8ff73 | 1796 | struct xfs_dquot *pq = NULL; |
7d095257 CH |
1797 | int error; |
1798 | uint lockflags; | |
1da177e4 | 1799 | |
7d095257 | 1800 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
1da177e4 LT |
1801 | return 0; |
1802 | ||
1803 | lockflags = XFS_ILOCK_EXCL; | |
1804 | xfs_ilock(ip, lockflags); | |
1805 | ||
bd186aa9 | 1806 | if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) |
1da177e4 LT |
1807 | gid = ip->i_d.di_gid; |
1808 | ||
1809 | /* | |
1810 | * Attach the dquot(s) to this inode, doing a dquot allocation | |
1811 | * if necessary. The dquot(s) will not be locked. | |
1812 | */ | |
1813 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
7d095257 CH |
1814 | error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC); |
1815 | if (error) { | |
1da177e4 | 1816 | xfs_iunlock(ip, lockflags); |
014c2544 | 1817 | return error; |
1da177e4 LT |
1818 | } |
1819 | } | |
1820 | ||
c8ad20ff | 1821 | if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { |
1da177e4 LT |
1822 | if (ip->i_d.di_uid != uid) { |
1823 | /* | |
1824 | * What we need is the dquot that has this uid, and | |
1825 | * if we send the inode to dqget, the uid of the inode | |
1826 | * takes priority over what's sent in the uid argument. | |
1827 | * We must unlock inode here before calling dqget if | |
1828 | * we're not sending the inode, because otherwise | |
1829 | * we'll deadlock by doing trans_reserve while | |
1830 | * holding ilock. | |
1831 | */ | |
1832 | xfs_iunlock(ip, lockflags); | |
7aab1b28 | 1833 | error = xfs_qm_dqget(mp, NULL, uid, |
1da177e4 LT |
1834 | XFS_DQ_USER, |
1835 | XFS_QMOPT_DQALLOC | | |
1836 | XFS_QMOPT_DOWARN, | |
113a5683 CS |
1837 | &uq); |
1838 | if (error) { | |
1da177e4 | 1839 | ASSERT(error != ENOENT); |
014c2544 | 1840 | return error; |
1da177e4 LT |
1841 | } |
1842 | /* | |
1843 | * Get the ilock in the right order. | |
1844 | */ | |
1845 | xfs_dqunlock(uq); | |
1846 | lockflags = XFS_ILOCK_SHARED; | |
1847 | xfs_ilock(ip, lockflags); | |
1848 | } else { | |
1849 | /* | |
1850 | * Take an extra reference, because we'll return | |
1851 | * this to caller | |
1852 | */ | |
1853 | ASSERT(ip->i_udquot); | |
78e55892 | 1854 | uq = xfs_qm_dqhold(ip->i_udquot); |
1da177e4 LT |
1855 | } |
1856 | } | |
c8ad20ff | 1857 | if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { |
1da177e4 LT |
1858 | if (ip->i_d.di_gid != gid) { |
1859 | xfs_iunlock(ip, lockflags); | |
7aab1b28 | 1860 | error = xfs_qm_dqget(mp, NULL, gid, |
1da177e4 LT |
1861 | XFS_DQ_GROUP, |
1862 | XFS_QMOPT_DQALLOC | | |
1863 | XFS_QMOPT_DOWARN, | |
113a5683 CS |
1864 | &gq); |
1865 | if (error) { | |
1da177e4 | 1866 | ASSERT(error != ENOENT); |
113a5683 | 1867 | goto error_rele; |
1da177e4 LT |
1868 | } |
1869 | xfs_dqunlock(gq); | |
1870 | lockflags = XFS_ILOCK_SHARED; | |
1871 | xfs_ilock(ip, lockflags); | |
1872 | } else { | |
1873 | ASSERT(ip->i_gdquot); | |
78e55892 | 1874 | gq = xfs_qm_dqhold(ip->i_gdquot); |
1da177e4 | 1875 | } |
92f8ff73 CS |
1876 | } |
1877 | if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { | |
6743099c | 1878 | if (xfs_get_projid(ip) != prid) { |
c8ad20ff | 1879 | xfs_iunlock(ip, lockflags); |
113a5683 | 1880 | error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, |
c8ad20ff NS |
1881 | XFS_DQ_PROJ, |
1882 | XFS_QMOPT_DQALLOC | | |
1883 | XFS_QMOPT_DOWARN, | |
92f8ff73 | 1884 | &pq); |
113a5683 | 1885 | if (error) { |
c8ad20ff | 1886 | ASSERT(error != ENOENT); |
113a5683 | 1887 | goto error_rele; |
c8ad20ff | 1888 | } |
92f8ff73 | 1889 | xfs_dqunlock(pq); |
c8ad20ff NS |
1890 | lockflags = XFS_ILOCK_SHARED; |
1891 | xfs_ilock(ip, lockflags); | |
1892 | } else { | |
92f8ff73 CS |
1893 | ASSERT(ip->i_pdquot); |
1894 | pq = xfs_qm_dqhold(ip->i_pdquot); | |
c8ad20ff | 1895 | } |
1da177e4 LT |
1896 | } |
1897 | if (uq) | |
0b1b213f | 1898 | trace_xfs_dquot_dqalloc(ip); |
1da177e4 LT |
1899 | |
1900 | xfs_iunlock(ip, lockflags); | |
1901 | if (O_udqpp) | |
1902 | *O_udqpp = uq; | |
1903 | else if (uq) | |
1904 | xfs_qm_dqrele(uq); | |
1905 | if (O_gdqpp) | |
1906 | *O_gdqpp = gq; | |
1907 | else if (gq) | |
1908 | xfs_qm_dqrele(gq); | |
92f8ff73 CS |
1909 | if (O_pdqpp) |
1910 | *O_pdqpp = pq; | |
1911 | else if (pq) | |
1912 | xfs_qm_dqrele(pq); | |
014c2544 | 1913 | return 0; |
113a5683 CS |
1914 | |
1915 | error_rele: | |
92f8ff73 CS |
1916 | if (gq) |
1917 | xfs_qm_dqrele(gq); | |
113a5683 CS |
1918 | if (uq) |
1919 | xfs_qm_dqrele(uq); | |
1920 | return error; | |
1da177e4 LT |
1921 | } |
1922 | ||
1923 | /* | |
1924 | * Actually transfer ownership, and do dquot modifications. | |
1925 | * These were already reserved. | |
1926 | */ | |
1927 | xfs_dquot_t * | |
1928 | xfs_qm_vop_chown( | |
1929 | xfs_trans_t *tp, | |
1930 | xfs_inode_t *ip, | |
1931 | xfs_dquot_t **IO_olddq, | |
1932 | xfs_dquot_t *newdq) | |
1933 | { | |
1934 | xfs_dquot_t *prevdq; | |
06d10dd9 NS |
1935 | uint bfield = XFS_IS_REALTIME_INODE(ip) ? |
1936 | XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; | |
1937 | ||
7d095257 | 1938 | |
579aa9ca | 1939 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
1940 | ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); |
1941 | ||
1942 | /* old dquot */ | |
1943 | prevdq = *IO_olddq; | |
1944 | ASSERT(prevdq); | |
1945 | ASSERT(prevdq != newdq); | |
1946 | ||
06d10dd9 NS |
1947 | xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks)); |
1948 | xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); | |
1da177e4 LT |
1949 | |
1950 | /* the sparkling new dquot */ | |
06d10dd9 NS |
1951 | xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks); |
1952 | xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); | |
1da177e4 LT |
1953 | |
1954 | /* | |
78e55892 CH |
1955 | * Take an extra reference, because the inode is going to keep |
1956 | * this dquot pointer even after the trans_commit. | |
1da177e4 | 1957 | */ |
78e55892 | 1958 | *IO_olddq = xfs_qm_dqhold(newdq); |
1da177e4 | 1959 | |
014c2544 | 1960 | return prevdq; |
1da177e4 LT |
1961 | } |
1962 | ||
1963 | /* | |
c8ad20ff | 1964 | * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID). |
1da177e4 LT |
1965 | */ |
1966 | int | |
1967 | xfs_qm_vop_chown_reserve( | |
113a5683 CS |
1968 | struct xfs_trans *tp, |
1969 | struct xfs_inode *ip, | |
1970 | struct xfs_dquot *udqp, | |
1971 | struct xfs_dquot *gdqp, | |
92f8ff73 | 1972 | struct xfs_dquot *pdqp, |
113a5683 | 1973 | uint flags) |
1da177e4 | 1974 | { |
113a5683 CS |
1975 | struct xfs_mount *mp = ip->i_mount; |
1976 | uint delblks, blkflags, prjflags = 0; | |
1977 | struct xfs_dquot *udq_unres = NULL; | |
1978 | struct xfs_dquot *gdq_unres = NULL; | |
92f8ff73 | 1979 | struct xfs_dquot *pdq_unres = NULL; |
113a5683 CS |
1980 | struct xfs_dquot *udq_delblks = NULL; |
1981 | struct xfs_dquot *gdq_delblks = NULL; | |
92f8ff73 | 1982 | struct xfs_dquot *pdq_delblks = NULL; |
113a5683 | 1983 | int error; |
7d095257 | 1984 | |
1da177e4 | 1985 | |
579aa9ca | 1986 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); |
1da177e4 LT |
1987 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1988 | ||
1989 | delblks = ip->i_delayed_blks; | |
06d10dd9 NS |
1990 | blkflags = XFS_IS_REALTIME_INODE(ip) ? |
1991 | XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS; | |
1da177e4 LT |
1992 | |
1993 | if (XFS_IS_UQUOTA_ON(mp) && udqp && | |
7aab1b28 | 1994 | ip->i_d.di_uid != be32_to_cpu(udqp->q_core.d_id)) { |
113a5683 | 1995 | udq_delblks = udqp; |
1da177e4 LT |
1996 | /* |
1997 | * If there are delayed allocation blocks, then we have to | |
1998 | * unreserve those from the old dquot, and add them to the | |
1999 | * new dquot. | |
2000 | */ | |
2001 | if (delblks) { | |
2002 | ASSERT(ip->i_udquot); | |
113a5683 | 2003 | udq_unres = ip->i_udquot; |
1da177e4 LT |
2004 | } |
2005 | } | |
92f8ff73 CS |
2006 | if (XFS_IS_GQUOTA_ON(ip->i_mount) && gdqp && |
2007 | ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id)) { | |
2008 | gdq_delblks = gdqp; | |
2009 | if (delblks) { | |
2010 | ASSERT(ip->i_gdquot); | |
2011 | gdq_unres = ip->i_gdquot; | |
2012 | } | |
2013 | } | |
2014 | ||
2015 | if (XFS_IS_PQUOTA_ON(ip->i_mount) && pdqp && | |
2016 | xfs_get_projid(ip) != be32_to_cpu(pdqp->q_core.d_id)) { | |
2017 | prjflags = XFS_QMOPT_ENOSPC; | |
2018 | pdq_delblks = pdqp; | |
2019 | if (delblks) { | |
2020 | ASSERT(ip->i_pdquot); | |
2021 | pdq_unres = ip->i_pdquot; | |
1da177e4 LT |
2022 | } |
2023 | } | |
2024 | ||
113a5683 | 2025 | error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, |
92f8ff73 CS |
2026 | udq_delblks, gdq_delblks, pdq_delblks, |
2027 | ip->i_d.di_nblocks, 1, | |
113a5683 CS |
2028 | flags | blkflags | prjflags); |
2029 | if (error) | |
2030 | return error; | |
1da177e4 LT |
2031 | |
2032 | /* | |
2033 | * Do the delayed blks reservations/unreservations now. Since, these | |
2034 | * are done without the help of a transaction, if a reservation fails | |
2035 | * its previous reservations won't be automatically undone by trans | |
2036 | * code. So, we have to do it manually here. | |
2037 | */ | |
2038 | if (delblks) { | |
2039 | /* | |
2040 | * Do the reservations first. Unreservation can't fail. | |
2041 | */ | |
92f8ff73 CS |
2042 | ASSERT(udq_delblks || gdq_delblks || pdq_delblks); |
2043 | ASSERT(udq_unres || gdq_unres || pdq_unres); | |
113a5683 | 2044 | error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, |
92f8ff73 CS |
2045 | udq_delblks, gdq_delblks, pdq_delblks, |
2046 | (xfs_qcnt_t)delblks, 0, | |
113a5683 CS |
2047 | flags | blkflags | prjflags); |
2048 | if (error) | |
2049 | return error; | |
1da177e4 | 2050 | xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, |
92f8ff73 CS |
2051 | udq_unres, gdq_unres, pdq_unres, |
2052 | -((xfs_qcnt_t)delblks), 0, blkflags); | |
1da177e4 LT |
2053 | } |
2054 | ||
2055 | return (0); | |
2056 | } | |
2057 | ||
2058 | int | |
2059 | xfs_qm_vop_rename_dqattach( | |
7d095257 | 2060 | struct xfs_inode **i_tab) |
1da177e4 | 2061 | { |
7d095257 CH |
2062 | struct xfs_mount *mp = i_tab[0]->i_mount; |
2063 | int i; | |
1da177e4 | 2064 | |
7d095257 | 2065 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
014c2544 | 2066 | return 0; |
1da177e4 | 2067 | |
7d095257 CH |
2068 | for (i = 0; (i < 4 && i_tab[i]); i++) { |
2069 | struct xfs_inode *ip = i_tab[i]; | |
2070 | int error; | |
2071 | ||
1da177e4 LT |
2072 | /* |
2073 | * Watch out for duplicate entries in the table. | |
2074 | */ | |
7d095257 CH |
2075 | if (i == 0 || ip != i_tab[i-1]) { |
2076 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
1da177e4 LT |
2077 | error = xfs_qm_dqattach(ip, 0); |
2078 | if (error) | |
014c2544 | 2079 | return error; |
1da177e4 LT |
2080 | } |
2081 | } | |
2082 | } | |
014c2544 | 2083 | return 0; |
1da177e4 LT |
2084 | } |
2085 | ||
2086 | void | |
7d095257 CH |
2087 | xfs_qm_vop_create_dqattach( |
2088 | struct xfs_trans *tp, | |
2089 | struct xfs_inode *ip, | |
2090 | struct xfs_dquot *udqp, | |
92f8ff73 CS |
2091 | struct xfs_dquot *gdqp, |
2092 | struct xfs_dquot *pdqp) | |
1da177e4 | 2093 | { |
7d095257 CH |
2094 | struct xfs_mount *mp = tp->t_mountp; |
2095 | ||
2096 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) | |
1da177e4 LT |
2097 | return; |
2098 | ||
579aa9ca | 2099 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
7d095257 | 2100 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1da177e4 LT |
2101 | |
2102 | if (udqp) { | |
1da177e4 | 2103 | ASSERT(ip->i_udquot == NULL); |
7d095257 | 2104 | ASSERT(XFS_IS_UQUOTA_ON(mp)); |
1149d96a | 2105 | ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id)); |
78e55892 CH |
2106 | |
2107 | ip->i_udquot = xfs_qm_dqhold(udqp); | |
1da177e4 LT |
2108 | xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); |
2109 | } | |
2110 | if (gdqp) { | |
1da177e4 | 2111 | ASSERT(ip->i_gdquot == NULL); |
92f8ff73 CS |
2112 | ASSERT(XFS_IS_GQUOTA_ON(mp)); |
2113 | ASSERT(ip->i_d.di_gid == be32_to_cpu(gdqp->q_core.d_id)); | |
78e55892 | 2114 | ip->i_gdquot = xfs_qm_dqhold(gdqp); |
1da177e4 LT |
2115 | xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); |
2116 | } | |
92f8ff73 CS |
2117 | if (pdqp) { |
2118 | ASSERT(ip->i_pdquot == NULL); | |
2119 | ASSERT(XFS_IS_PQUOTA_ON(mp)); | |
2120 | ASSERT(xfs_get_projid(ip) == be32_to_cpu(pdqp->q_core.d_id)); | |
2121 | ||
2122 | ip->i_pdquot = xfs_qm_dqhold(pdqp); | |
2123 | xfs_trans_mod_dquot(tp, pdqp, XFS_TRANS_DQ_ICOUNT, 1); | |
2124 | } | |
1da177e4 LT |
2125 | } |
2126 |