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