Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
4ce3121f NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
4ce3121f NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
4ce3121f NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
4ce3121f NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 LT |
18 | #include "xfs.h" |
19 | #include "xfs_fs.h" | |
a844f451 | 20 | #include "xfs_bit.h" |
1da177e4 | 21 | #include "xfs_log.h" |
a844f451 | 22 | #include "xfs_inum.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" | |
41 | #include "xfs_utils.h" | |
1da177e4 | 42 | #include "xfs_qm.h" |
0b1b213f | 43 | #include "xfs_trace.h" |
1da177e4 LT |
44 | |
45 | /* | |
46 | * The global quota manager. There is only one of these for the entire | |
47 | * system, _not_ one per file system. XQM keeps track of the overall | |
48 | * quota functionality, including maintaining the freelist and hash | |
49 | * tables of dquots. | |
50 | */ | |
a0b0b8a5 | 51 | struct mutex xfs_Gqm_lock; |
1da177e4 LT |
52 | struct xfs_qm *xfs_Gqm; |
53 | ||
54 | kmem_zone_t *qm_dqzone; | |
55 | kmem_zone_t *qm_dqtrxzone; | |
1da177e4 LT |
56 | |
57 | STATIC void xfs_qm_list_init(xfs_dqlist_t *, char *, int); | |
58 | STATIC void xfs_qm_list_destroy(xfs_dqlist_t *); | |
59 | ||
60 | STATIC int xfs_qm_init_quotainos(xfs_mount_t *); | |
ba0f32d4 | 61 | STATIC int xfs_qm_init_quotainfo(xfs_mount_t *); |
1495f230 | 62 | STATIC int xfs_qm_shake(struct shrinker *, struct shrink_control *); |
1da177e4 | 63 | |
8e1f936b RR |
64 | static struct shrinker xfs_qm_shaker = { |
65 | .shrink = xfs_qm_shake, | |
66 | .seeks = DEFAULT_SEEKS, | |
67 | }; | |
68 | ||
1da177e4 LT |
69 | /* |
70 | * Initialize the XQM structure. | |
71 | * Note that there is not one quota manager per file system. | |
72 | */ | |
73 | STATIC struct xfs_qm * | |
74 | xfs_Gqm_init(void) | |
75 | { | |
6b3f6b5b NS |
76 | xfs_dqhash_t *udqhash, *gdqhash; |
77 | xfs_qm_t *xqm; | |
215101c3 NS |
78 | size_t hsize; |
79 | uint i; | |
1da177e4 LT |
80 | |
81 | /* | |
82 | * Initialize the dquot hash tables. | |
83 | */ | |
77e4635a | 84 | udqhash = kmem_zalloc_greedy(&hsize, |
5995cb7d | 85 | XFS_QM_HASHSIZE_LOW * sizeof(xfs_dqhash_t), |
bdfb0430 CH |
86 | XFS_QM_HASHSIZE_HIGH * sizeof(xfs_dqhash_t)); |
87 | if (!udqhash) | |
88 | goto out; | |
89 | ||
90 | gdqhash = kmem_zalloc_large(hsize); | |
d67b1b03 | 91 | if (!gdqhash) |
bdfb0430 CH |
92 | goto out_free_udqhash; |
93 | ||
77e4635a | 94 | hsize /= sizeof(xfs_dqhash_t); |
1da177e4 | 95 | |
6b3f6b5b NS |
96 | xqm = kmem_zalloc(sizeof(xfs_qm_t), KM_SLEEP); |
97 | xqm->qm_dqhashmask = hsize - 1; | |
98 | xqm->qm_usr_dqhtable = udqhash; | |
99 | xqm->qm_grp_dqhtable = gdqhash; | |
1da177e4 LT |
100 | ASSERT(xqm->qm_usr_dqhtable != NULL); |
101 | ASSERT(xqm->qm_grp_dqhtable != NULL); | |
102 | ||
103 | for (i = 0; i < hsize; i++) { | |
104 | xfs_qm_list_init(&(xqm->qm_usr_dqhtable[i]), "uxdqh", i); | |
105 | xfs_qm_list_init(&(xqm->qm_grp_dqhtable[i]), "gxdqh", i); | |
106 | } | |
107 | ||
108 | /* | |
109 | * Freelist of all dquots of all file systems | |
110 | */ | |
3a8406f6 DC |
111 | INIT_LIST_HEAD(&xqm->qm_dqfrlist); |
112 | xqm->qm_dqfrlist_cnt = 0; | |
113 | mutex_init(&xqm->qm_dqfrlist_lock); | |
1da177e4 LT |
114 | |
115 | /* | |
116 | * dquot zone. we register our own low-memory callback. | |
117 | */ | |
118 | if (!qm_dqzone) { | |
119 | xqm->qm_dqzone = kmem_zone_init(sizeof(xfs_dquot_t), | |
120 | "xfs_dquots"); | |
121 | qm_dqzone = xqm->qm_dqzone; | |
122 | } else | |
123 | xqm->qm_dqzone = qm_dqzone; | |
124 | ||
8e1f936b | 125 | register_shrinker(&xfs_qm_shaker); |
1da177e4 LT |
126 | |
127 | /* | |
128 | * The t_dqinfo portion of transactions. | |
129 | */ | |
130 | if (!qm_dqtrxzone) { | |
131 | xqm->qm_dqtrxzone = kmem_zone_init(sizeof(xfs_dquot_acct_t), | |
132 | "xfs_dqtrx"); | |
133 | qm_dqtrxzone = xqm->qm_dqtrxzone; | |
134 | } else | |
135 | xqm->qm_dqtrxzone = qm_dqtrxzone; | |
136 | ||
1da177e4 | 137 | xqm->qm_nrefs = 0; |
1da177e4 | 138 | return xqm; |
bdfb0430 CH |
139 | |
140 | out_free_udqhash: | |
141 | kmem_free_large(udqhash); | |
142 | out: | |
143 | return NULL; | |
1da177e4 LT |
144 | } |
145 | ||
146 | /* | |
147 | * Destroy the global quota manager when its reference count goes to zero. | |
148 | */ | |
ba0f32d4 | 149 | STATIC void |
1da177e4 LT |
150 | xfs_qm_destroy( |
151 | struct xfs_qm *xqm) | |
152 | { | |
153 | int hsize, i; | |
154 | ||
155 | ASSERT(xqm != NULL); | |
156 | ASSERT(xqm->qm_nrefs == 0); | |
80a376bf | 157 | |
8e1f936b | 158 | unregister_shrinker(&xfs_qm_shaker); |
80a376bf CH |
159 | |
160 | mutex_lock(&xqm->qm_dqfrlist_lock); | |
161 | ASSERT(list_empty(&xqm->qm_dqfrlist)); | |
162 | mutex_unlock(&xqm->qm_dqfrlist_lock); | |
163 | ||
1da177e4 LT |
164 | hsize = xqm->qm_dqhashmask + 1; |
165 | for (i = 0; i < hsize; i++) { | |
166 | xfs_qm_list_destroy(&(xqm->qm_usr_dqhtable[i])); | |
167 | xfs_qm_list_destroy(&(xqm->qm_grp_dqhtable[i])); | |
168 | } | |
bdfb0430 CH |
169 | kmem_free_large(xqm->qm_usr_dqhtable); |
170 | kmem_free_large(xqm->qm_grp_dqhtable); | |
1da177e4 LT |
171 | xqm->qm_usr_dqhtable = NULL; |
172 | xqm->qm_grp_dqhtable = NULL; | |
173 | xqm->qm_dqhashmask = 0; | |
3a8406f6 | 174 | |
f0e2d93c | 175 | kmem_free(xqm); |
1da177e4 LT |
176 | } |
177 | ||
178 | /* | |
179 | * Called at mount time to let XQM know that another file system is | |
180 | * starting quotas. This isn't crucial information as the individual mount | |
181 | * structures are pretty independent, but it helps the XQM keep a | |
182 | * global view of what's going on. | |
183 | */ | |
184 | /* ARGSUSED */ | |
185 | STATIC int | |
186 | xfs_qm_hold_quotafs_ref( | |
187 | struct xfs_mount *mp) | |
188 | { | |
189 | /* | |
190 | * Need to lock the xfs_Gqm structure for things like this. For example, | |
191 | * the structure could disappear between the entry to this routine and | |
192 | * a HOLD operation if not locked. | |
193 | */ | |
e2494582 | 194 | mutex_lock(&xfs_Gqm_lock); |
1da177e4 | 195 | |
bdfb0430 | 196 | if (!xfs_Gqm) { |
1da177e4 | 197 | xfs_Gqm = xfs_Gqm_init(); |
38e712ab JL |
198 | if (!xfs_Gqm) { |
199 | mutex_unlock(&xfs_Gqm_lock); | |
bdfb0430 | 200 | return ENOMEM; |
38e712ab | 201 | } |
bdfb0430 CH |
202 | } |
203 | ||
1da177e4 LT |
204 | /* |
205 | * We can keep a list of all filesystems with quotas mounted for | |
206 | * debugging and statistical purposes, but ... | |
207 | * Just take a reference and get out. | |
208 | */ | |
e2494582 CH |
209 | xfs_Gqm->qm_nrefs++; |
210 | mutex_unlock(&xfs_Gqm_lock); | |
1da177e4 LT |
211 | |
212 | return 0; | |
213 | } | |
214 | ||
215 | ||
216 | /* | |
217 | * Release the reference that a filesystem took at mount time, | |
218 | * so that we know when we need to destroy the entire quota manager. | |
219 | */ | |
220 | /* ARGSUSED */ | |
221 | STATIC void | |
222 | xfs_qm_rele_quotafs_ref( | |
223 | struct xfs_mount *mp) | |
224 | { | |
1da177e4 LT |
225 | ASSERT(xfs_Gqm); |
226 | ASSERT(xfs_Gqm->qm_nrefs > 0); | |
227 | ||
1da177e4 LT |
228 | /* |
229 | * Destroy the entire XQM. If somebody mounts with quotaon, this'll | |
230 | * be restarted. | |
231 | */ | |
e2494582 CH |
232 | mutex_lock(&xfs_Gqm_lock); |
233 | if (--xfs_Gqm->qm_nrefs == 0) { | |
1da177e4 LT |
234 | xfs_qm_destroy(xfs_Gqm); |
235 | xfs_Gqm = NULL; | |
236 | } | |
e2494582 | 237 | mutex_unlock(&xfs_Gqm_lock); |
1da177e4 LT |
238 | } |
239 | ||
1da177e4 LT |
240 | /* |
241 | * Just destroy the quotainfo structure. | |
242 | */ | |
243 | void | |
7d095257 CH |
244 | xfs_qm_unmount( |
245 | struct xfs_mount *mp) | |
1da177e4 | 246 | { |
7d095257 | 247 | if (mp->m_quotainfo) { |
8112e9dc | 248 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 | 249 | xfs_qm_destroy_quotainfo(mp); |
7d095257 | 250 | } |
1da177e4 LT |
251 | } |
252 | ||
253 | ||
254 | /* | |
255 | * This is called from xfs_mountfs to start quotas and initialize all | |
256 | * necessary data structures like quotainfo. This is also responsible for | |
257 | * running a quotacheck as necessary. We are guaranteed that the superblock | |
258 | * is consistently read in at this point. | |
53aa7915 DC |
259 | * |
260 | * If we fail here, the mount will continue with quota turned off. We don't | |
261 | * need to inidicate success or failure at all. | |
1da177e4 | 262 | */ |
53aa7915 | 263 | void |
1da177e4 | 264 | xfs_qm_mount_quotas( |
4249023a | 265 | xfs_mount_t *mp) |
1da177e4 | 266 | { |
1da177e4 LT |
267 | int error = 0; |
268 | uint sbf; | |
269 | ||
1da177e4 LT |
270 | /* |
271 | * If quotas on realtime volumes is not supported, we disable | |
272 | * quotas immediately. | |
273 | */ | |
274 | if (mp->m_sb.sb_rextents) { | |
0b932ccc | 275 | xfs_notice(mp, "Cannot turn on quotas for realtime filesystem"); |
1da177e4 LT |
276 | mp->m_qflags = 0; |
277 | goto write_changes; | |
278 | } | |
279 | ||
1da177e4 | 280 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
155ffd07 | 281 | |
1da177e4 LT |
282 | /* |
283 | * Allocate the quotainfo structure inside the mount struct, and | |
284 | * create quotainode(s), and change/rev superblock if necessary. | |
285 | */ | |
53aa7915 DC |
286 | error = xfs_qm_init_quotainfo(mp); |
287 | if (error) { | |
1da177e4 LT |
288 | /* |
289 | * We must turn off quotas. | |
290 | */ | |
291 | ASSERT(mp->m_quotainfo == NULL); | |
292 | mp->m_qflags = 0; | |
293 | goto write_changes; | |
294 | } | |
295 | /* | |
296 | * If any of the quotas are not consistent, do a quotacheck. | |
297 | */ | |
4249023a | 298 | if (XFS_QM_NEED_QUOTACHECK(mp)) { |
53aa7915 DC |
299 | error = xfs_qm_quotacheck(mp); |
300 | if (error) { | |
301 | /* Quotacheck failed and disabled quotas. */ | |
302 | return; | |
1da177e4 | 303 | } |
1da177e4 | 304 | } |
646d5bda DD |
305 | /* |
306 | * If one type of quotas is off, then it will lose its | |
307 | * quotachecked status, since we won't be doing accounting for | |
308 | * that type anymore. | |
309 | */ | |
53aa7915 | 310 | if (!XFS_IS_UQUOTA_ON(mp)) |
646d5bda | 311 | mp->m_qflags &= ~XFS_UQUOTA_CHKD; |
53aa7915 | 312 | if (!(XFS_IS_GQUOTA_ON(mp) || XFS_IS_PQUOTA_ON(mp))) |
646d5bda | 313 | mp->m_qflags &= ~XFS_OQUOTA_CHKD; |
155ffd07 | 314 | |
1da177e4 LT |
315 | write_changes: |
316 | /* | |
3685c2a1 | 317 | * We actually don't have to acquire the m_sb_lock at all. |
1da177e4 LT |
318 | * This can only be called from mount, and that's single threaded. XXX |
319 | */ | |
3685c2a1 | 320 | spin_lock(&mp->m_sb_lock); |
1da177e4 LT |
321 | sbf = mp->m_sb.sb_qflags; |
322 | mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL; | |
3685c2a1 | 323 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
324 | |
325 | if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) { | |
326 | if (xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS)) { | |
327 | /* | |
328 | * We could only have been turning quotas off. | |
329 | * We aren't in very good shape actually because | |
330 | * the incore structures are convinced that quotas are | |
331 | * off, but the on disk superblock doesn't know that ! | |
332 | */ | |
333 | ASSERT(!(XFS_IS_QUOTA_RUNNING(mp))); | |
53487786 DC |
334 | xfs_alert(mp, "%s: Superblock update failed!", |
335 | __func__); | |
1da177e4 LT |
336 | } |
337 | } | |
338 | ||
339 | if (error) { | |
53487786 | 340 | xfs_warn(mp, "Failed to initialize disk quotas."); |
7d095257 | 341 | return; |
1da177e4 | 342 | } |
1da177e4 LT |
343 | } |
344 | ||
345 | /* | |
346 | * Called from the vfsops layer. | |
347 | */ | |
e57481dc | 348 | void |
1da177e4 LT |
349 | xfs_qm_unmount_quotas( |
350 | xfs_mount_t *mp) | |
351 | { | |
1da177e4 LT |
352 | /* |
353 | * Release the dquots that root inode, et al might be holding, | |
354 | * before we flush quotas and blow away the quotainfo structure. | |
355 | */ | |
356 | ASSERT(mp->m_rootip); | |
357 | xfs_qm_dqdetach(mp->m_rootip); | |
358 | if (mp->m_rbmip) | |
359 | xfs_qm_dqdetach(mp->m_rbmip); | |
360 | if (mp->m_rsumip) | |
361 | xfs_qm_dqdetach(mp->m_rsumip); | |
362 | ||
363 | /* | |
e57481dc | 364 | * Release the quota inodes. |
1da177e4 | 365 | */ |
1da177e4 | 366 | if (mp->m_quotainfo) { |
e57481dc CH |
367 | if (mp->m_quotainfo->qi_uquotaip) { |
368 | IRELE(mp->m_quotainfo->qi_uquotaip); | |
369 | mp->m_quotainfo->qi_uquotaip = NULL; | |
1da177e4 | 370 | } |
e57481dc CH |
371 | if (mp->m_quotainfo->qi_gquotaip) { |
372 | IRELE(mp->m_quotainfo->qi_gquotaip); | |
373 | mp->m_quotainfo->qi_gquotaip = NULL; | |
1da177e4 LT |
374 | } |
375 | } | |
1da177e4 LT |
376 | } |
377 | ||
378 | /* | |
379 | * Flush all dquots of the given file system to disk. The dquots are | |
380 | * _not_ purged from memory here, just their data written to disk. | |
381 | */ | |
ba0f32d4 | 382 | STATIC int |
1da177e4 | 383 | xfs_qm_dqflush_all( |
a7ef9bd7 | 384 | struct xfs_mount *mp) |
1da177e4 | 385 | { |
8a7b8a89 CH |
386 | struct xfs_quotainfo *q = mp->m_quotainfo; |
387 | int recl; | |
388 | struct xfs_dquot *dqp; | |
8a7b8a89 | 389 | int error; |
1da177e4 | 390 | |
8a7b8a89 | 391 | if (!q) |
014c2544 | 392 | return 0; |
1da177e4 | 393 | again: |
8a7b8a89 CH |
394 | mutex_lock(&q->qi_dqlist_lock); |
395 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 | 396 | xfs_dqlock(dqp); |
92678554 CH |
397 | if ((dqp->dq_flags & XFS_DQ_FREEING) || |
398 | !XFS_DQ_IS_DIRTY(dqp)) { | |
1da177e4 LT |
399 | xfs_dqunlock(dqp); |
400 | continue; | |
401 | } | |
0b1b213f | 402 | |
1da177e4 | 403 | /* XXX a sentinel would be better */ |
8a7b8a89 | 404 | recl = q->qi_dqreclaims; |
e1f49cf2 | 405 | if (!xfs_dqflock_nowait(dqp)) { |
1da177e4 LT |
406 | /* |
407 | * If we can't grab the flush lock then check | |
408 | * to see if the dquot has been flushed delayed | |
409 | * write. If so, grab its buffer and send it | |
410 | * out immediately. We'll be able to acquire | |
411 | * the flush lock when the I/O completes. | |
412 | */ | |
800b484e | 413 | xfs_dqflock_pushbuf_wait(dqp); |
1da177e4 LT |
414 | } |
415 | /* | |
416 | * Let go of the mplist lock. We don't want to hold it | |
417 | * across a disk write. | |
418 | */ | |
8a7b8a89 | 419 | mutex_unlock(&q->qi_dqlist_lock); |
a7ef9bd7 | 420 | error = xfs_qm_dqflush(dqp, 0); |
1da177e4 LT |
421 | xfs_dqunlock(dqp); |
422 | if (error) | |
014c2544 | 423 | return error; |
1da177e4 | 424 | |
8a7b8a89 CH |
425 | mutex_lock(&q->qi_dqlist_lock); |
426 | if (recl != q->qi_dqreclaims) { | |
427 | mutex_unlock(&q->qi_dqlist_lock); | |
1da177e4 LT |
428 | /* XXX restart limit */ |
429 | goto again; | |
430 | } | |
431 | } | |
432 | ||
8a7b8a89 | 433 | mutex_unlock(&q->qi_dqlist_lock); |
1da177e4 | 434 | /* return ! busy */ |
014c2544 | 435 | return 0; |
1da177e4 | 436 | } |
92678554 | 437 | |
1da177e4 LT |
438 | /* |
439 | * Release the group dquot pointers the user dquots may be | |
440 | * carrying around as a hint. mplist is locked on entry and exit. | |
441 | */ | |
442 | STATIC void | |
443 | xfs_qm_detach_gdquots( | |
8a7b8a89 | 444 | struct xfs_mount *mp) |
1da177e4 | 445 | { |
8a7b8a89 CH |
446 | struct xfs_quotainfo *q = mp->m_quotainfo; |
447 | struct xfs_dquot *dqp, *gdqp; | |
1da177e4 LT |
448 | |
449 | again: | |
8a7b8a89 CH |
450 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
451 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 | 452 | xfs_dqlock(dqp); |
92678554 CH |
453 | if (dqp->dq_flags & XFS_DQ_FREEING) { |
454 | xfs_dqunlock(dqp); | |
455 | mutex_unlock(&q->qi_dqlist_lock); | |
456 | delay(1); | |
457 | mutex_lock(&q->qi_dqlist_lock); | |
458 | goto again; | |
459 | } | |
28fb588c CH |
460 | |
461 | gdqp = dqp->q_gdquot; | |
462 | if (gdqp) | |
1da177e4 | 463 | dqp->q_gdquot = NULL; |
1da177e4 LT |
464 | xfs_dqunlock(dqp); |
465 | ||
28fb588c CH |
466 | if (gdqp) |
467 | xfs_qm_dqrele(gdqp); | |
1da177e4 LT |
468 | } |
469 | } | |
470 | ||
471 | /* | |
472 | * Go through all the incore dquots of this file system and take them | |
473 | * off the mplist and hashlist, if the dquot type matches the dqtype | |
474 | * parameter. This is used when turning off quota accounting for | |
475 | * users and/or groups, as well as when the filesystem is unmounting. | |
476 | */ | |
477 | STATIC int | |
478 | xfs_qm_dqpurge_int( | |
8a7b8a89 CH |
479 | struct xfs_mount *mp, |
480 | uint flags) | |
1da177e4 | 481 | { |
8a7b8a89 CH |
482 | struct xfs_quotainfo *q = mp->m_quotainfo; |
483 | struct xfs_dquot *dqp, *n; | |
484 | uint dqtype; | |
92678554 CH |
485 | int nmisses = 0; |
486 | LIST_HEAD (dispose_list); | |
1da177e4 | 487 | |
8a7b8a89 | 488 | if (!q) |
014c2544 | 489 | return 0; |
1da177e4 LT |
490 | |
491 | dqtype = (flags & XFS_QMOPT_UQUOTA) ? XFS_DQ_USER : 0; | |
c8ad20ff | 492 | dqtype |= (flags & XFS_QMOPT_PQUOTA) ? XFS_DQ_PROJ : 0; |
1da177e4 LT |
493 | dqtype |= (flags & XFS_QMOPT_GQUOTA) ? XFS_DQ_GROUP : 0; |
494 | ||
8a7b8a89 | 495 | mutex_lock(&q->qi_dqlist_lock); |
1da177e4 LT |
496 | |
497 | /* | |
498 | * In the first pass through all incore dquots of this filesystem, | |
499 | * we release the group dquot pointers the user dquots may be | |
500 | * carrying around as a hint. We need to do this irrespective of | |
501 | * what's being turned off. | |
502 | */ | |
503 | xfs_qm_detach_gdquots(mp); | |
504 | ||
1da177e4 | 505 | /* |
92678554 | 506 | * Try to get rid of all of the unwanted dquots. |
1da177e4 | 507 | */ |
8a7b8a89 | 508 | list_for_each_entry_safe(dqp, n, &q->qi_dqlist, q_mplist) { |
be7ffc38 | 509 | xfs_dqlock(dqp); |
92678554 CH |
510 | if ((dqp->dq_flags & dqtype) != 0 && |
511 | !(dqp->dq_flags & XFS_DQ_FREEING)) { | |
512 | if (dqp->q_nrefs == 0) { | |
513 | dqp->dq_flags |= XFS_DQ_FREEING; | |
514 | list_move_tail(&dqp->q_mplist, &dispose_list); | |
515 | } else | |
516 | nmisses++; | |
be7ffc38 CH |
517 | } |
518 | xfs_dqunlock(dqp); | |
1da177e4 | 519 | } |
8a7b8a89 | 520 | mutex_unlock(&q->qi_dqlist_lock); |
92678554 CH |
521 | |
522 | list_for_each_entry_safe(dqp, n, &dispose_list, q_mplist) | |
523 | xfs_qm_dqpurge(dqp); | |
524 | ||
1da177e4 LT |
525 | return nmisses; |
526 | } | |
527 | ||
528 | int | |
529 | xfs_qm_dqpurge_all( | |
530 | xfs_mount_t *mp, | |
531 | uint flags) | |
532 | { | |
533 | int ndquots; | |
534 | ||
535 | /* | |
536 | * Purge the dquot cache. | |
537 | * None of the dquots should really be busy at this point. | |
538 | */ | |
539 | if (mp->m_quotainfo) { | |
540 | while ((ndquots = xfs_qm_dqpurge_int(mp, flags))) { | |
541 | delay(ndquots * 10); | |
542 | } | |
543 | } | |
544 | return 0; | |
545 | } | |
546 | ||
547 | STATIC int | |
548 | xfs_qm_dqattach_one( | |
549 | xfs_inode_t *ip, | |
550 | xfs_dqid_t id, | |
551 | uint type, | |
552 | uint doalloc, | |
1da177e4 LT |
553 | xfs_dquot_t *udqhint, /* hint */ |
554 | xfs_dquot_t **IO_idqpp) | |
555 | { | |
556 | xfs_dquot_t *dqp; | |
557 | int error; | |
558 | ||
579aa9ca | 559 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 560 | error = 0; |
8e9b6e7f | 561 | |
1da177e4 LT |
562 | /* |
563 | * See if we already have it in the inode itself. IO_idqpp is | |
564 | * &i_udquot or &i_gdquot. This made the code look weird, but | |
565 | * made the logic a lot simpler. | |
566 | */ | |
8e9b6e7f CH |
567 | dqp = *IO_idqpp; |
568 | if (dqp) { | |
0b1b213f | 569 | trace_xfs_dqattach_found(dqp); |
8e9b6e7f | 570 | return 0; |
1da177e4 LT |
571 | } |
572 | ||
573 | /* | |
574 | * udqhint is the i_udquot field in inode, and is non-NULL only | |
c8ad20ff | 575 | * when the type arg is group/project. Its purpose is to save a |
1da177e4 LT |
576 | * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside |
577 | * the user dquot. | |
578 | */ | |
8e9b6e7f CH |
579 | if (udqhint) { |
580 | ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ); | |
1da177e4 LT |
581 | xfs_dqlock(udqhint); |
582 | ||
8e9b6e7f CH |
583 | /* |
584 | * No need to take dqlock to look at the id. | |
585 | * | |
586 | * The ID can't change until it gets reclaimed, and it won't | |
587 | * be reclaimed as long as we have a ref from inode and we | |
588 | * hold the ilock. | |
589 | */ | |
590 | dqp = udqhint->q_gdquot; | |
591 | if (dqp && be32_to_cpu(dqp->q_core.d_id) == id) { | |
8e9b6e7f | 592 | ASSERT(*IO_idqpp == NULL); |
8e9b6e7f | 593 | |
78e55892 | 594 | *IO_idqpp = xfs_qm_dqhold(dqp); |
1da177e4 | 595 | xfs_dqunlock(udqhint); |
8e9b6e7f | 596 | return 0; |
1da177e4 | 597 | } |
8e9b6e7f CH |
598 | |
599 | /* | |
600 | * We can't hold a dquot lock when we call the dqget code. | |
601 | * We'll deadlock in no time, because of (not conforming to) | |
602 | * lock ordering - the inodelock comes before any dquot lock, | |
603 | * and we may drop and reacquire the ilock in xfs_qm_dqget(). | |
604 | */ | |
1da177e4 | 605 | xfs_dqunlock(udqhint); |
8e9b6e7f CH |
606 | } |
607 | ||
1da177e4 LT |
608 | /* |
609 | * Find the dquot from somewhere. This bumps the | |
610 | * reference count of dquot and returns it locked. | |
611 | * This can return ENOENT if dquot didn't exist on | |
612 | * disk and we didn't ask it to allocate; | |
613 | * ESRCH if quotas got turned off suddenly. | |
614 | */ | |
db3e74b5 MH |
615 | error = xfs_qm_dqget(ip->i_mount, ip, id, type, |
616 | doalloc | XFS_QMOPT_DOWARN, &dqp); | |
8e9b6e7f CH |
617 | if (error) |
618 | return error; | |
1da177e4 | 619 | |
0b1b213f | 620 | trace_xfs_dqattach_get(dqp); |
8e9b6e7f | 621 | |
1da177e4 LT |
622 | /* |
623 | * dqget may have dropped and re-acquired the ilock, but it guarantees | |
624 | * that the dquot returned is the one that should go in the inode. | |
625 | */ | |
626 | *IO_idqpp = dqp; | |
8e9b6e7f CH |
627 | xfs_dqunlock(dqp); |
628 | return 0; | |
1da177e4 LT |
629 | } |
630 | ||
631 | ||
632 | /* | |
633 | * Given a udquot and gdquot, attach a ptr to the group dquot in the | |
ab680bb7 | 634 | * udquot as a hint for future lookups. |
1da177e4 LT |
635 | */ |
636 | STATIC void | |
637 | xfs_qm_dqattach_grouphint( | |
638 | xfs_dquot_t *udq, | |
8e9b6e7f | 639 | xfs_dquot_t *gdq) |
1da177e4 LT |
640 | { |
641 | xfs_dquot_t *tmp; | |
642 | ||
8e9b6e7f | 643 | xfs_dqlock(udq); |
1da177e4 | 644 | |
ab680bb7 CH |
645 | tmp = udq->q_gdquot; |
646 | if (tmp) { | |
647 | if (tmp == gdq) | |
648 | goto done; | |
1da177e4 LT |
649 | |
650 | udq->q_gdquot = NULL; | |
1da177e4 | 651 | xfs_qm_dqrele(tmp); |
1da177e4 | 652 | } |
8e9b6e7f | 653 | |
78e55892 | 654 | udq->q_gdquot = xfs_qm_dqhold(gdq); |
ab680bb7 | 655 | done: |
8e9b6e7f | 656 | xfs_dqunlock(udq); |
1da177e4 LT |
657 | } |
658 | ||
659 | ||
660 | /* | |
c8ad20ff NS |
661 | * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON |
662 | * into account. | |
1da177e4 | 663 | * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed. |
1da177e4 LT |
664 | * Inode may get unlocked and relocked in here, and the caller must deal with |
665 | * the consequences. | |
666 | */ | |
667 | int | |
7d095257 | 668 | xfs_qm_dqattach_locked( |
1da177e4 LT |
669 | xfs_inode_t *ip, |
670 | uint flags) | |
671 | { | |
672 | xfs_mount_t *mp = ip->i_mount; | |
673 | uint nquotas = 0; | |
674 | int error = 0; | |
675 | ||
7d095257 CH |
676 | if (!XFS_IS_QUOTA_RUNNING(mp) || |
677 | !XFS_IS_QUOTA_ON(mp) || | |
678 | !XFS_NOT_DQATTACHED(mp, ip) || | |
679 | ip->i_ino == mp->m_sb.sb_uquotino || | |
680 | ip->i_ino == mp->m_sb.sb_gquotino) | |
014c2544 | 681 | return 0; |
1da177e4 | 682 | |
7d095257 | 683 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
684 | |
685 | if (XFS_IS_UQUOTA_ON(mp)) { | |
686 | error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER, | |
687 | flags & XFS_QMOPT_DQALLOC, | |
1da177e4 LT |
688 | NULL, &ip->i_udquot); |
689 | if (error) | |
690 | goto done; | |
691 | nquotas++; | |
692 | } | |
579aa9ca CH |
693 | |
694 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); | |
c8ad20ff NS |
695 | if (XFS_IS_OQUOTA_ON(mp)) { |
696 | error = XFS_IS_GQUOTA_ON(mp) ? | |
697 | xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, | |
698 | flags & XFS_QMOPT_DQALLOC, | |
c8ad20ff | 699 | ip->i_udquot, &ip->i_gdquot) : |
6743099c | 700 | xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ, |
1da177e4 | 701 | flags & XFS_QMOPT_DQALLOC, |
1da177e4 LT |
702 | ip->i_udquot, &ip->i_gdquot); |
703 | /* | |
704 | * Don't worry about the udquot that we may have | |
705 | * attached above. It'll get detached, if not already. | |
706 | */ | |
707 | if (error) | |
708 | goto done; | |
709 | nquotas++; | |
710 | } | |
711 | ||
712 | /* | |
713 | * Attach this group quota to the user quota as a hint. | |
714 | * This WON'T, in general, result in a thrash. | |
715 | */ | |
716 | if (nquotas == 2) { | |
579aa9ca | 717 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
718 | ASSERT(ip->i_udquot); |
719 | ASSERT(ip->i_gdquot); | |
720 | ||
721 | /* | |
ab680bb7 CH |
722 | * We do not have i_udquot locked at this point, but this check |
723 | * is OK since we don't depend on the i_gdquot to be accurate | |
724 | * 100% all the time. It is just a hint, and this will | |
725 | * succeed in general. | |
1da177e4 | 726 | */ |
ab680bb7 CH |
727 | if (ip->i_udquot->q_gdquot != ip->i_gdquot) |
728 | xfs_qm_dqattach_grouphint(ip->i_udquot, ip->i_gdquot); | |
1da177e4 LT |
729 | } |
730 | ||
7d095257 | 731 | done: |
ea15ab3c CH |
732 | #ifdef DEBUG |
733 | if (!error) { | |
1da177e4 LT |
734 | if (XFS_IS_UQUOTA_ON(mp)) |
735 | ASSERT(ip->i_udquot); | |
c8ad20ff | 736 | if (XFS_IS_OQUOTA_ON(mp)) |
1da177e4 LT |
737 | ASSERT(ip->i_gdquot); |
738 | } | |
7d095257 | 739 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 740 | #endif |
7d095257 CH |
741 | return error; |
742 | } | |
1da177e4 | 743 | |
7d095257 CH |
744 | int |
745 | xfs_qm_dqattach( | |
746 | struct xfs_inode *ip, | |
747 | uint flags) | |
748 | { | |
749 | int error; | |
750 | ||
751 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
752 | error = xfs_qm_dqattach_locked(ip, flags); | |
753 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1da177e4 | 754 | |
014c2544 | 755 | return error; |
1da177e4 LT |
756 | } |
757 | ||
758 | /* | |
759 | * Release dquots (and their references) if any. | |
760 | * The inode should be locked EXCL except when this's called by | |
761 | * xfs_ireclaim. | |
762 | */ | |
763 | void | |
764 | xfs_qm_dqdetach( | |
765 | xfs_inode_t *ip) | |
766 | { | |
767 | if (!(ip->i_udquot || ip->i_gdquot)) | |
768 | return; | |
769 | ||
0b1b213f CH |
770 | trace_xfs_dquot_dqdetach(ip); |
771 | ||
1da177e4 LT |
772 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_uquotino); |
773 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_gquotino); | |
1da177e4 LT |
774 | if (ip->i_udquot) { |
775 | xfs_qm_dqrele(ip->i_udquot); | |
776 | ip->i_udquot = NULL; | |
777 | } | |
778 | if (ip->i_gdquot) { | |
779 | xfs_qm_dqrele(ip->i_gdquot); | |
780 | ip->i_gdquot = NULL; | |
781 | } | |
782 | } | |
783 | ||
a4edd1da CH |
784 | /* |
785 | * The hash chains and the mplist use the same xfs_dqhash structure as | |
786 | * their list head, but we can take the mplist qh_lock and one of the | |
787 | * hash qh_locks at the same time without any problem as they aren't | |
788 | * related. | |
789 | */ | |
790 | static struct lock_class_key xfs_quota_mplist_class; | |
1da177e4 LT |
791 | |
792 | /* | |
793 | * This initializes all the quota information that's kept in the | |
794 | * mount structure | |
795 | */ | |
ba0f32d4 | 796 | STATIC int |
1da177e4 LT |
797 | xfs_qm_init_quotainfo( |
798 | xfs_mount_t *mp) | |
799 | { | |
800 | xfs_quotainfo_t *qinf; | |
801 | int error; | |
802 | xfs_dquot_t *dqp; | |
803 | ||
804 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
805 | ||
806 | /* | |
807 | * Tell XQM that we exist as soon as possible. | |
808 | */ | |
809 | if ((error = xfs_qm_hold_quotafs_ref(mp))) { | |
014c2544 | 810 | return error; |
1da177e4 LT |
811 | } |
812 | ||
813 | qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP); | |
814 | ||
815 | /* | |
816 | * See if quotainodes are setup, and if not, allocate them, | |
817 | * and change the superblock accordingly. | |
818 | */ | |
819 | if ((error = xfs_qm_init_quotainos(mp))) { | |
f0e2d93c | 820 | kmem_free(qinf); |
1da177e4 | 821 | mp->m_quotainfo = NULL; |
014c2544 | 822 | return error; |
1da177e4 LT |
823 | } |
824 | ||
3a25404b DC |
825 | INIT_LIST_HEAD(&qinf->qi_dqlist); |
826 | mutex_init(&qinf->qi_dqlist_lock); | |
827 | lockdep_set_class(&qinf->qi_dqlist_lock, &xfs_quota_mplist_class); | |
a4edd1da | 828 | |
1da177e4 LT |
829 | qinf->qi_dqreclaims = 0; |
830 | ||
831 | /* mutex used to serialize quotaoffs */ | |
794ee1ba | 832 | mutex_init(&qinf->qi_quotaofflock); |
1da177e4 LT |
833 | |
834 | /* Precalc some constants */ | |
835 | qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
836 | ASSERT(qinf->qi_dqchunklen); | |
837 | qinf->qi_dqperchunk = BBTOB(qinf->qi_dqchunklen); | |
838 | do_div(qinf->qi_dqperchunk, sizeof(xfs_dqblk_t)); | |
839 | ||
840 | mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); | |
841 | ||
842 | /* | |
843 | * We try to get the limits from the superuser's limits fields. | |
844 | * This is quite hacky, but it is standard quota practice. | |
7ae44407 | 845 | * |
1da177e4 LT |
846 | * We look at the USR dquot with id == 0 first, but if user quotas |
847 | * are not enabled we goto the GRP dquot with id == 0. | |
848 | * We don't really care to keep separate default limits for user | |
849 | * and group quotas, at least not at this point. | |
7ae44407 CH |
850 | * |
851 | * Since we may not have done a quotacheck by this point, just read | |
852 | * the dquot without attaching it to any hashtables or lists. | |
1da177e4 | 853 | */ |
7ae44407 CH |
854 | error = xfs_qm_dqread(mp, 0, |
855 | XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : | |
856 | (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP : | |
857 | XFS_DQ_PROJ), | |
858 | XFS_QMOPT_DOWARN, &dqp); | |
859 | if (!error) { | |
1da177e4 LT |
860 | xfs_disk_dquot_t *ddqp = &dqp->q_core; |
861 | ||
862 | /* | |
863 | * The warnings and timers set the grace period given to | |
864 | * a user or group before he or she can not perform any | |
865 | * more writing. If it is zero, a default is used. | |
866 | */ | |
1149d96a CH |
867 | qinf->qi_btimelimit = ddqp->d_btimer ? |
868 | be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT; | |
869 | qinf->qi_itimelimit = ddqp->d_itimer ? | |
870 | be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT; | |
871 | qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ? | |
872 | be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT; | |
873 | qinf->qi_bwarnlimit = ddqp->d_bwarns ? | |
874 | be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT; | |
875 | qinf->qi_iwarnlimit = ddqp->d_iwarns ? | |
876 | be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT; | |
877 | qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ? | |
878 | be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT; | |
879 | qinf->qi_bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit); | |
880 | qinf->qi_bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit); | |
881 | qinf->qi_ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit); | |
882 | qinf->qi_isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit); | |
883 | qinf->qi_rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit); | |
884 | qinf->qi_rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit); | |
1da177e4 | 885 | |
1da177e4 LT |
886 | xfs_qm_dqdestroy(dqp); |
887 | } else { | |
888 | qinf->qi_btimelimit = XFS_QM_BTIMELIMIT; | |
889 | qinf->qi_itimelimit = XFS_QM_ITIMELIMIT; | |
890 | qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT; | |
891 | qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT; | |
892 | qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT; | |
06d10dd9 | 893 | qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT; |
1da177e4 LT |
894 | } |
895 | ||
014c2544 | 896 | return 0; |
1da177e4 LT |
897 | } |
898 | ||
899 | ||
900 | /* | |
901 | * Gets called when unmounting a filesystem or when all quotas get | |
902 | * turned off. | |
903 | * This purges the quota inodes, destroys locks and frees itself. | |
904 | */ | |
905 | void | |
906 | xfs_qm_destroy_quotainfo( | |
907 | xfs_mount_t *mp) | |
908 | { | |
909 | xfs_quotainfo_t *qi; | |
910 | ||
911 | qi = mp->m_quotainfo; | |
912 | ASSERT(qi != NULL); | |
913 | ASSERT(xfs_Gqm != NULL); | |
914 | ||
915 | /* | |
916 | * Release the reference that XQM kept, so that we know | |
917 | * when the XQM structure should be freed. We cannot assume | |
918 | * that xfs_Gqm is non-null after this point. | |
919 | */ | |
920 | xfs_qm_rele_quotafs_ref(mp); | |
921 | ||
3a25404b DC |
922 | ASSERT(list_empty(&qi->qi_dqlist)); |
923 | mutex_destroy(&qi->qi_dqlist_lock); | |
1da177e4 LT |
924 | |
925 | if (qi->qi_uquotaip) { | |
26cc0021 | 926 | IRELE(qi->qi_uquotaip); |
1da177e4 LT |
927 | qi->qi_uquotaip = NULL; /* paranoia */ |
928 | } | |
929 | if (qi->qi_gquotaip) { | |
26cc0021 | 930 | IRELE(qi->qi_gquotaip); |
1da177e4 LT |
931 | qi->qi_gquotaip = NULL; |
932 | } | |
933 | mutex_destroy(&qi->qi_quotaofflock); | |
f0e2d93c | 934 | kmem_free(qi); |
1da177e4 LT |
935 | mp->m_quotainfo = NULL; |
936 | } | |
937 | ||
938 | ||
939 | ||
940 | /* ------------------- PRIVATE STATIC FUNCTIONS ----------------------- */ | |
941 | ||
942 | /* ARGSUSED */ | |
943 | STATIC void | |
944 | xfs_qm_list_init( | |
945 | xfs_dqlist_t *list, | |
946 | char *str, | |
947 | int n) | |
948 | { | |
794ee1ba | 949 | mutex_init(&list->qh_lock); |
e6a81f13 | 950 | INIT_LIST_HEAD(&list->qh_list); |
1da177e4 LT |
951 | list->qh_version = 0; |
952 | list->qh_nelems = 0; | |
953 | } | |
954 | ||
955 | STATIC void | |
956 | xfs_qm_list_destroy( | |
957 | xfs_dqlist_t *list) | |
958 | { | |
959 | mutex_destroy(&(list->qh_lock)); | |
960 | } | |
961 | ||
1da177e4 LT |
962 | /* |
963 | * Create an inode and return with a reference already taken, but unlocked | |
964 | * This is how we create quota inodes | |
965 | */ | |
966 | STATIC int | |
967 | xfs_qm_qino_alloc( | |
968 | xfs_mount_t *mp, | |
969 | xfs_inode_t **ip, | |
970 | __int64_t sbfields, | |
971 | uint flags) | |
972 | { | |
973 | xfs_trans_t *tp; | |
974 | int error; | |
1da177e4 LT |
975 | int committed; |
976 | ||
061f7209 | 977 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE); |
1da177e4 LT |
978 | if ((error = xfs_trans_reserve(tp, |
979 | XFS_QM_QINOCREATE_SPACE_RES(mp), | |
980 | XFS_CREATE_LOG_RES(mp), 0, | |
981 | XFS_TRANS_PERM_LOG_RES, | |
982 | XFS_CREATE_LOG_COUNT))) { | |
983 | xfs_trans_cancel(tp, 0); | |
014c2544 | 984 | return error; |
1da177e4 | 985 | } |
1da177e4 | 986 | |
6c77b0ea CH |
987 | error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip, &committed); |
988 | if (error) { | |
1da177e4 LT |
989 | xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | |
990 | XFS_TRANS_ABORT); | |
014c2544 | 991 | return error; |
1da177e4 LT |
992 | } |
993 | ||
1da177e4 LT |
994 | /* |
995 | * Make the changes in the superblock, and log those too. | |
996 | * sbfields arg may contain fields other than *QUOTINO; | |
997 | * VERSIONNUM for example. | |
998 | */ | |
3685c2a1 | 999 | spin_lock(&mp->m_sb_lock); |
1da177e4 | 1000 | if (flags & XFS_QMOPT_SBVERSION) { |
62118709 | 1001 | ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); |
1da177e4 LT |
1002 | ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | |
1003 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)) == | |
1004 | (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1005 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)); | |
1006 | ||
62118709 | 1007 | xfs_sb_version_addquota(&mp->m_sb); |
1da177e4 LT |
1008 | mp->m_sb.sb_uquotino = NULLFSINO; |
1009 | mp->m_sb.sb_gquotino = NULLFSINO; | |
1010 | ||
1011 | /* qflags will get updated _after_ quotacheck */ | |
1012 | mp->m_sb.sb_qflags = 0; | |
1da177e4 LT |
1013 | } |
1014 | if (flags & XFS_QMOPT_UQUOTA) | |
1015 | mp->m_sb.sb_uquotino = (*ip)->i_ino; | |
1016 | else | |
1017 | mp->m_sb.sb_gquotino = (*ip)->i_ino; | |
3685c2a1 | 1018 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
1019 | xfs_mod_sb(tp, sbfields); |
1020 | ||
1c72bf90 | 1021 | if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) { |
53487786 | 1022 | xfs_alert(mp, "%s failed (error %d)!", __func__, error); |
014c2544 | 1023 | return error; |
1da177e4 | 1024 | } |
014c2544 | 1025 | return 0; |
1da177e4 LT |
1026 | } |
1027 | ||
1028 | ||
5b139738 | 1029 | STATIC void |
1da177e4 LT |
1030 | xfs_qm_reset_dqcounts( |
1031 | xfs_mount_t *mp, | |
1032 | xfs_buf_t *bp, | |
1033 | xfs_dqid_t id, | |
1034 | uint type) | |
1035 | { | |
1036 | xfs_disk_dquot_t *ddq; | |
1037 | int j; | |
1038 | ||
0b1b213f CH |
1039 | trace_xfs_reset_dqcounts(bp, _RET_IP_); |
1040 | ||
1da177e4 LT |
1041 | /* |
1042 | * Reset all counters and timers. They'll be | |
1043 | * started afresh by xfs_qm_quotacheck. | |
1044 | */ | |
1045 | #ifdef DEBUG | |
1046 | j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
1047 | do_div(j, sizeof(xfs_dqblk_t)); | |
8a7b8a89 | 1048 | ASSERT(mp->m_quotainfo->qi_dqperchunk == j); |
1da177e4 | 1049 | #endif |
62926044 | 1050 | ddq = bp->b_addr; |
8a7b8a89 | 1051 | for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { |
1da177e4 LT |
1052 | /* |
1053 | * Do a sanity check, and if needed, repair the dqblk. Don't | |
1054 | * output any warnings because it's perfectly possible to | |
c41564b5 | 1055 | * find uninitialised dquot blks. See comment in xfs_qm_dqcheck. |
1da177e4 | 1056 | */ |
a0fa2b67 | 1057 | (void) xfs_qm_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR, |
1da177e4 | 1058 | "xfs_quotacheck"); |
1149d96a CH |
1059 | ddq->d_bcount = 0; |
1060 | ddq->d_icount = 0; | |
1061 | ddq->d_rtbcount = 0; | |
1062 | ddq->d_btimer = 0; | |
1063 | ddq->d_itimer = 0; | |
1064 | ddq->d_rtbtimer = 0; | |
1065 | ddq->d_bwarns = 0; | |
1066 | ddq->d_iwarns = 0; | |
1067 | ddq->d_rtbwarns = 0; | |
1da177e4 LT |
1068 | ddq = (xfs_disk_dquot_t *) ((xfs_dqblk_t *)ddq + 1); |
1069 | } | |
1da177e4 LT |
1070 | } |
1071 | ||
1072 | STATIC int | |
1073 | xfs_qm_dqiter_bufs( | |
1074 | xfs_mount_t *mp, | |
1075 | xfs_dqid_t firstid, | |
1076 | xfs_fsblock_t bno, | |
1077 | xfs_filblks_t blkcnt, | |
1078 | uint flags) | |
1079 | { | |
1080 | xfs_buf_t *bp; | |
1081 | int error; | |
c8ad20ff | 1082 | int type; |
1da177e4 LT |
1083 | |
1084 | ASSERT(blkcnt > 0); | |
c8ad20ff NS |
1085 | type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER : |
1086 | (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP); | |
1da177e4 LT |
1087 | error = 0; |
1088 | ||
1089 | /* | |
1090 | * Blkcnt arg can be a very big number, and might even be | |
1091 | * larger than the log itself. So, we have to break it up into | |
1092 | * manageable-sized transactions. | |
1093 | * Note that we don't start a permanent transaction here; we might | |
1094 | * not be able to get a log reservation for the whole thing up front, | |
1095 | * and we don't really care to either, because we just discard | |
1096 | * everything if we were to crash in the middle of this loop. | |
1097 | */ | |
1098 | while (blkcnt--) { | |
1099 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1100 | XFS_FSB_TO_DADDR(mp, bno), | |
8a7b8a89 | 1101 | mp->m_quotainfo->qi_dqchunklen, 0, &bp); |
1da177e4 LT |
1102 | if (error) |
1103 | break; | |
1104 | ||
5b139738 | 1105 | xfs_qm_reset_dqcounts(mp, bp, firstid, type); |
61551f1e CH |
1106 | xfs_buf_delwri_queue(bp); |
1107 | xfs_buf_relse(bp); | |
1da177e4 LT |
1108 | /* |
1109 | * goto the next block. | |
1110 | */ | |
1111 | bno++; | |
8a7b8a89 | 1112 | firstid += mp->m_quotainfo->qi_dqperchunk; |
1da177e4 | 1113 | } |
014c2544 | 1114 | return error; |
1da177e4 LT |
1115 | } |
1116 | ||
1117 | /* | |
c8ad20ff | 1118 | * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a |
1da177e4 LT |
1119 | * caller supplied function for every chunk of dquots that we find. |
1120 | */ | |
1121 | STATIC int | |
1122 | xfs_qm_dqiterate( | |
1123 | xfs_mount_t *mp, | |
1124 | xfs_inode_t *qip, | |
1125 | uint flags) | |
1126 | { | |
1127 | xfs_bmbt_irec_t *map; | |
1128 | int i, nmaps; /* number of map entries */ | |
1129 | int error; /* return value */ | |
1130 | xfs_fileoff_t lblkno; | |
1131 | xfs_filblks_t maxlblkcnt; | |
1132 | xfs_dqid_t firstid; | |
1133 | xfs_fsblock_t rablkno; | |
1134 | xfs_filblks_t rablkcnt; | |
1135 | ||
1136 | error = 0; | |
1137 | /* | |
c41564b5 | 1138 | * This looks racy, but we can't keep an inode lock across a |
1da177e4 LT |
1139 | * trans_reserve. But, this gets called during quotacheck, and that |
1140 | * happens only at mount time which is single threaded. | |
1141 | */ | |
1142 | if (qip->i_d.di_nblocks == 0) | |
014c2544 | 1143 | return 0; |
1da177e4 LT |
1144 | |
1145 | map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP); | |
1146 | ||
1147 | lblkno = 0; | |
1148 | maxlblkcnt = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_MAXIOFFSET(mp)); | |
1149 | do { | |
1150 | nmaps = XFS_DQITER_MAP_SIZE; | |
1151 | /* | |
1152 | * We aren't changing the inode itself. Just changing | |
1153 | * some of its data. No new blocks are added here, and | |
1154 | * the inode is never added to the transaction. | |
1155 | */ | |
1156 | xfs_ilock(qip, XFS_ILOCK_SHARED); | |
5c8ed202 DC |
1157 | error = xfs_bmapi_read(qip, lblkno, maxlblkcnt - lblkno, |
1158 | map, &nmaps, 0); | |
1da177e4 LT |
1159 | xfs_iunlock(qip, XFS_ILOCK_SHARED); |
1160 | if (error) | |
1161 | break; | |
1162 | ||
1163 | ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); | |
1164 | for (i = 0; i < nmaps; i++) { | |
1165 | ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); | |
1166 | ASSERT(map[i].br_blockcount); | |
1167 | ||
1168 | ||
1169 | lblkno += map[i].br_blockcount; | |
1170 | ||
1171 | if (map[i].br_startblock == HOLESTARTBLOCK) | |
1172 | continue; | |
1173 | ||
1174 | firstid = (xfs_dqid_t) map[i].br_startoff * | |
8a7b8a89 | 1175 | mp->m_quotainfo->qi_dqperchunk; |
1da177e4 LT |
1176 | /* |
1177 | * Do a read-ahead on the next extent. | |
1178 | */ | |
1179 | if ((i+1 < nmaps) && | |
1180 | (map[i+1].br_startblock != HOLESTARTBLOCK)) { | |
1181 | rablkcnt = map[i+1].br_blockcount; | |
1182 | rablkno = map[i+1].br_startblock; | |
1183 | while (rablkcnt--) { | |
1a1a3e97 | 1184 | xfs_buf_readahead(mp->m_ddev_targp, |
1da177e4 | 1185 | XFS_FSB_TO_DADDR(mp, rablkno), |
8a7b8a89 | 1186 | mp->m_quotainfo->qi_dqchunklen); |
1da177e4 LT |
1187 | rablkno++; |
1188 | } | |
1189 | } | |
1190 | /* | |
1191 | * Iterate thru all the blks in the extent and | |
1192 | * reset the counters of all the dquots inside them. | |
1193 | */ | |
1194 | if ((error = xfs_qm_dqiter_bufs(mp, | |
1195 | firstid, | |
1196 | map[i].br_startblock, | |
1197 | map[i].br_blockcount, | |
1198 | flags))) { | |
1199 | break; | |
1200 | } | |
1201 | } | |
1202 | ||
1203 | if (error) | |
1204 | break; | |
1205 | } while (nmaps > 0); | |
1206 | ||
f0e2d93c | 1207 | kmem_free(map); |
1da177e4 | 1208 | |
014c2544 | 1209 | return error; |
1da177e4 LT |
1210 | } |
1211 | ||
1212 | /* | |
1213 | * Called by dqusage_adjust in doing a quotacheck. | |
52fda114 CH |
1214 | * |
1215 | * Given the inode, and a dquot id this updates both the incore dqout as well | |
1216 | * as the buffer copy. This is so that once the quotacheck is done, we can | |
1217 | * just log all the buffers, as opposed to logging numerous updates to | |
1218 | * individual dquots. | |
1da177e4 | 1219 | */ |
52fda114 | 1220 | STATIC int |
1da177e4 | 1221 | xfs_qm_quotacheck_dqadjust( |
52fda114 CH |
1222 | struct xfs_inode *ip, |
1223 | xfs_dqid_t id, | |
1224 | uint type, | |
1da177e4 LT |
1225 | xfs_qcnt_t nblks, |
1226 | xfs_qcnt_t rtblks) | |
1227 | { | |
52fda114 CH |
1228 | struct xfs_mount *mp = ip->i_mount; |
1229 | struct xfs_dquot *dqp; | |
1230 | int error; | |
1231 | ||
1232 | error = xfs_qm_dqget(mp, ip, id, type, | |
1233 | XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp); | |
1234 | if (error) { | |
1235 | /* | |
1236 | * Shouldn't be able to turn off quotas here. | |
1237 | */ | |
1238 | ASSERT(error != ESRCH); | |
1239 | ASSERT(error != ENOENT); | |
1240 | return error; | |
1241 | } | |
0b1b213f CH |
1242 | |
1243 | trace_xfs_dqadjust(dqp); | |
1244 | ||
1da177e4 LT |
1245 | /* |
1246 | * Adjust the inode count and the block count to reflect this inode's | |
1247 | * resource usage. | |
1248 | */ | |
413d57c9 | 1249 | be64_add_cpu(&dqp->q_core.d_icount, 1); |
1da177e4 LT |
1250 | dqp->q_res_icount++; |
1251 | if (nblks) { | |
413d57c9 | 1252 | be64_add_cpu(&dqp->q_core.d_bcount, nblks); |
1da177e4 LT |
1253 | dqp->q_res_bcount += nblks; |
1254 | } | |
1255 | if (rtblks) { | |
413d57c9 | 1256 | be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks); |
1da177e4 LT |
1257 | dqp->q_res_rtbcount += rtblks; |
1258 | } | |
1259 | ||
1260 | /* | |
1261 | * Set default limits, adjust timers (since we changed usages) | |
191f8488 CH |
1262 | * |
1263 | * There are no timers for the default values set in the root dquot. | |
1da177e4 | 1264 | */ |
191f8488 | 1265 | if (dqp->q_core.d_id) { |
52fda114 CH |
1266 | xfs_qm_adjust_dqlimits(mp, &dqp->q_core); |
1267 | xfs_qm_adjust_dqtimers(mp, &dqp->q_core); | |
1da177e4 LT |
1268 | } |
1269 | ||
1270 | dqp->dq_flags |= XFS_DQ_DIRTY; | |
52fda114 CH |
1271 | xfs_qm_dqput(dqp); |
1272 | return 0; | |
1da177e4 LT |
1273 | } |
1274 | ||
1275 | STATIC int | |
1276 | xfs_qm_get_rtblks( | |
1277 | xfs_inode_t *ip, | |
1278 | xfs_qcnt_t *O_rtblks) | |
1279 | { | |
1280 | xfs_filblks_t rtblks; /* total rt blks */ | |
4eea22f0 | 1281 | xfs_extnum_t idx; /* extent record index */ |
1da177e4 LT |
1282 | xfs_ifork_t *ifp; /* inode fork pointer */ |
1283 | xfs_extnum_t nextents; /* number of extent entries */ | |
1da177e4 LT |
1284 | int error; |
1285 | ||
1286 | ASSERT(XFS_IS_REALTIME_INODE(ip)); | |
1287 | ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); | |
1288 | if (!(ifp->if_flags & XFS_IFEXTENTS)) { | |
1289 | if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK))) | |
014c2544 | 1290 | return error; |
1da177e4 LT |
1291 | } |
1292 | rtblks = 0; | |
4eea22f0 | 1293 | nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); |
a6f64d4a CH |
1294 | for (idx = 0; idx < nextents; idx++) |
1295 | rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx)); | |
1da177e4 | 1296 | *O_rtblks = (xfs_qcnt_t)rtblks; |
014c2544 | 1297 | return 0; |
1da177e4 LT |
1298 | } |
1299 | ||
1300 | /* | |
1301 | * callback routine supplied to bulkstat(). Given an inumber, find its | |
1302 | * dquots and update them to account for resources taken by that inode. | |
1303 | */ | |
1304 | /* ARGSUSED */ | |
1305 | STATIC int | |
1306 | xfs_qm_dqusage_adjust( | |
1307 | xfs_mount_t *mp, /* mount point for filesystem */ | |
1308 | xfs_ino_t ino, /* inode number to get data for */ | |
1309 | void __user *buffer, /* not used */ | |
1310 | int ubsize, /* not used */ | |
1da177e4 | 1311 | int *ubused, /* not used */ |
1da177e4 LT |
1312 | int *res) /* result code value */ |
1313 | { | |
1314 | xfs_inode_t *ip; | |
52fda114 | 1315 | xfs_qcnt_t nblks, rtblks = 0; |
1da177e4 LT |
1316 | int error; |
1317 | ||
1318 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
1319 | ||
1320 | /* | |
1321 | * rootino must have its resources accounted for, not so with the quota | |
1322 | * inodes. | |
1323 | */ | |
1324 | if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) { | |
1325 | *res = BULKSTAT_RV_NOTHING; | |
1326 | return XFS_ERROR(EINVAL); | |
1327 | } | |
1328 | ||
1329 | /* | |
1330 | * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget | |
1331 | * interface expects the inode to be exclusively locked because that's | |
1332 | * the case in all other instances. It's OK that we do this because | |
1333 | * quotacheck is done only at mount time. | |
1334 | */ | |
52fda114 CH |
1335 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_EXCL, &ip); |
1336 | if (error) { | |
1da177e4 | 1337 | *res = BULKSTAT_RV_NOTHING; |
014c2544 | 1338 | return error; |
1da177e4 LT |
1339 | } |
1340 | ||
52fda114 | 1341 | ASSERT(ip->i_delayed_blks == 0); |
1da177e4 | 1342 | |
52fda114 | 1343 | if (XFS_IS_REALTIME_INODE(ip)) { |
1da177e4 LT |
1344 | /* |
1345 | * Walk thru the extent list and count the realtime blocks. | |
1346 | */ | |
52fda114 CH |
1347 | error = xfs_qm_get_rtblks(ip, &rtblks); |
1348 | if (error) | |
1349 | goto error0; | |
1da177e4 | 1350 | } |
1da177e4 | 1351 | |
52fda114 | 1352 | nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks; |
1da177e4 LT |
1353 | |
1354 | /* | |
1355 | * Add the (disk blocks and inode) resources occupied by this | |
1356 | * inode to its dquots. We do this adjustment in the incore dquot, | |
1357 | * and also copy the changes to its buffer. | |
1358 | * We don't care about putting these changes in a transaction | |
1359 | * envelope because if we crash in the middle of a 'quotacheck' | |
1360 | * we have to start from the beginning anyway. | |
1361 | * Once we're done, we'll log all the dquot bufs. | |
1362 | * | |
c41564b5 | 1363 | * The *QUOTA_ON checks below may look pretty racy, but quotachecks |
1da177e4 LT |
1364 | * and quotaoffs don't race. (Quotachecks happen at mount time only). |
1365 | */ | |
1366 | if (XFS_IS_UQUOTA_ON(mp)) { | |
52fda114 CH |
1367 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid, |
1368 | XFS_DQ_USER, nblks, rtblks); | |
1369 | if (error) | |
1370 | goto error0; | |
1da177e4 | 1371 | } |
52fda114 CH |
1372 | |
1373 | if (XFS_IS_GQUOTA_ON(mp)) { | |
1374 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid, | |
1375 | XFS_DQ_GROUP, nblks, rtblks); | |
1376 | if (error) | |
1377 | goto error0; | |
1da177e4 | 1378 | } |
1da177e4 | 1379 | |
52fda114 | 1380 | if (XFS_IS_PQUOTA_ON(mp)) { |
6743099c | 1381 | error = xfs_qm_quotacheck_dqadjust(ip, xfs_get_projid(ip), |
52fda114 CH |
1382 | XFS_DQ_PROJ, nblks, rtblks); |
1383 | if (error) | |
1384 | goto error0; | |
1385 | } | |
1386 | ||
1387 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1388 | IRELE(ip); | |
1da177e4 | 1389 | *res = BULKSTAT_RV_DIDONE; |
014c2544 | 1390 | return 0; |
52fda114 CH |
1391 | |
1392 | error0: | |
1393 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1394 | IRELE(ip); | |
1395 | *res = BULKSTAT_RV_GIVEUP; | |
1396 | return error; | |
1da177e4 LT |
1397 | } |
1398 | ||
1399 | /* | |
1400 | * Walk thru all the filesystem inodes and construct a consistent view | |
1401 | * of the disk quota world. If the quotacheck fails, disable quotas. | |
1402 | */ | |
1403 | int | |
1404 | xfs_qm_quotacheck( | |
1405 | xfs_mount_t *mp) | |
1406 | { | |
1407 | int done, count, error; | |
1408 | xfs_ino_t lastino; | |
1409 | size_t structsz; | |
1410 | xfs_inode_t *uip, *gip; | |
1411 | uint flags; | |
1412 | ||
1413 | count = INT_MAX; | |
1414 | structsz = 1; | |
1415 | lastino = 0; | |
1416 | flags = 0; | |
1417 | ||
8a7b8a89 | 1418 | ASSERT(mp->m_quotainfo->qi_uquotaip || mp->m_quotainfo->qi_gquotaip); |
1da177e4 LT |
1419 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1420 | ||
1421 | /* | |
1422 | * There should be no cached dquots. The (simplistic) quotacheck | |
1423 | * algorithm doesn't like that. | |
1424 | */ | |
3a25404b | 1425 | ASSERT(list_empty(&mp->m_quotainfo->qi_dqlist)); |
1da177e4 | 1426 | |
0b932ccc | 1427 | xfs_notice(mp, "Quotacheck needed: Please wait."); |
1da177e4 LT |
1428 | |
1429 | /* | |
c8ad20ff | 1430 | * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset |
1da177e4 LT |
1431 | * their counters to zero. We need a clean slate. |
1432 | * We don't log our changes till later. | |
1433 | */ | |
8a7b8a89 CH |
1434 | uip = mp->m_quotainfo->qi_uquotaip; |
1435 | if (uip) { | |
1436 | error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA); | |
1437 | if (error) | |
1da177e4 LT |
1438 | goto error_return; |
1439 | flags |= XFS_UQUOTA_CHKD; | |
1440 | } | |
1441 | ||
8a7b8a89 CH |
1442 | gip = mp->m_quotainfo->qi_gquotaip; |
1443 | if (gip) { | |
1444 | error = xfs_qm_dqiterate(mp, gip, XFS_IS_GQUOTA_ON(mp) ? | |
1445 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1446 | if (error) | |
1da177e4 | 1447 | goto error_return; |
c8ad20ff | 1448 | flags |= XFS_OQUOTA_CHKD; |
1da177e4 LT |
1449 | } |
1450 | ||
1451 | do { | |
1452 | /* | |
1453 | * Iterate thru all the inodes in the file system, | |
1454 | * adjusting the corresponding dquot counters in core. | |
1455 | */ | |
7dce11db CH |
1456 | error = xfs_bulkstat(mp, &lastino, &count, |
1457 | xfs_qm_dqusage_adjust, | |
1458 | structsz, NULL, &done); | |
1459 | if (error) | |
1da177e4 LT |
1460 | break; |
1461 | ||
7dce11db | 1462 | } while (!done); |
1da177e4 | 1463 | |
4b8879df DC |
1464 | /* |
1465 | * We've made all the changes that we need to make incore. | |
1466 | * Flush them down to disk buffers if everything was updated | |
1467 | * successfully. | |
1468 | */ | |
1469 | if (!error) | |
a7ef9bd7 | 1470 | error = xfs_qm_dqflush_all(mp); |
4b8879df | 1471 | |
1da177e4 LT |
1472 | /* |
1473 | * We can get this error if we couldn't do a dquot allocation inside | |
1474 | * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the | |
1475 | * dirty dquots that might be cached, we just want to get rid of them | |
1476 | * and turn quotaoff. The dquots won't be attached to any of the inodes | |
1477 | * at this point (because we intentionally didn't in dqget_noattach). | |
1478 | */ | |
1479 | if (error) { | |
8112e9dc | 1480 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 LT |
1481 | goto error_return; |
1482 | } | |
1da177e4 LT |
1483 | |
1484 | /* | |
1485 | * We didn't log anything, because if we crashed, we'll have to | |
1486 | * start the quotacheck from scratch anyway. However, we must make | |
1487 | * sure that our dquot changes are secure before we put the | |
1488 | * quotacheck'd stamp on the superblock. So, here we do a synchronous | |
1489 | * flush. | |
1490 | */ | |
a9add83e | 1491 | xfs_flush_buftarg(mp->m_ddev_targp, 1); |
1da177e4 LT |
1492 | |
1493 | /* | |
1494 | * If one type of quotas is off, then it will lose its | |
1495 | * quotachecked status, since we won't be doing accounting for | |
1496 | * that type anymore. | |
1497 | */ | |
4177af3a | 1498 | mp->m_qflags &= ~XFS_ALL_QUOTA_CHKD; |
1da177e4 LT |
1499 | mp->m_qflags |= flags; |
1500 | ||
1da177e4 LT |
1501 | error_return: |
1502 | if (error) { | |
0b932ccc DC |
1503 | xfs_warn(mp, |
1504 | "Quotacheck: Unsuccessful (Error %d): Disabling quotas.", | |
1505 | error); | |
1da177e4 LT |
1506 | /* |
1507 | * We must turn off quotas. | |
1508 | */ | |
1509 | ASSERT(mp->m_quotainfo != NULL); | |
1510 | ASSERT(xfs_Gqm != NULL); | |
1511 | xfs_qm_destroy_quotainfo(mp); | |
31d5577b | 1512 | if (xfs_mount_reset_sbqflags(mp)) { |
0b932ccc DC |
1513 | xfs_warn(mp, |
1514 | "Quotacheck: Failed to reset quota flags."); | |
31d5577b | 1515 | } |
0b932ccc DC |
1516 | } else |
1517 | xfs_notice(mp, "Quotacheck: Done."); | |
1da177e4 LT |
1518 | return (error); |
1519 | } | |
1520 | ||
1521 | /* | |
1522 | * This is called after the superblock has been read in and we're ready to | |
1523 | * iget the quota inodes. | |
1524 | */ | |
1525 | STATIC int | |
1526 | xfs_qm_init_quotainos( | |
1527 | xfs_mount_t *mp) | |
1528 | { | |
1529 | xfs_inode_t *uip, *gip; | |
1530 | int error; | |
1531 | __int64_t sbflags; | |
1532 | uint flags; | |
1533 | ||
1534 | ASSERT(mp->m_quotainfo); | |
1535 | uip = gip = NULL; | |
1536 | sbflags = 0; | |
1537 | flags = 0; | |
1538 | ||
1539 | /* | |
1540 | * Get the uquota and gquota inodes | |
1541 | */ | |
62118709 | 1542 | if (xfs_sb_version_hasquota(&mp->m_sb)) { |
1da177e4 LT |
1543 | if (XFS_IS_UQUOTA_ON(mp) && |
1544 | mp->m_sb.sb_uquotino != NULLFSINO) { | |
1545 | ASSERT(mp->m_sb.sb_uquotino > 0); | |
1546 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, | |
7b6259e7 | 1547 | 0, 0, &uip))) |
1da177e4 LT |
1548 | return XFS_ERROR(error); |
1549 | } | |
c8ad20ff | 1550 | if (XFS_IS_OQUOTA_ON(mp) && |
1da177e4 LT |
1551 | mp->m_sb.sb_gquotino != NULLFSINO) { |
1552 | ASSERT(mp->m_sb.sb_gquotino > 0); | |
1553 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, | |
7b6259e7 | 1554 | 0, 0, &gip))) { |
1da177e4 | 1555 | if (uip) |
43355099 | 1556 | IRELE(uip); |
1da177e4 LT |
1557 | return XFS_ERROR(error); |
1558 | } | |
1559 | } | |
1560 | } else { | |
1561 | flags |= XFS_QMOPT_SBVERSION; | |
1562 | sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1563 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS); | |
1564 | } | |
1565 | ||
1566 | /* | |
1567 | * Create the two inodes, if they don't exist already. The changes | |
1568 | * made above will get added to a transaction and logged in one of | |
1569 | * the qino_alloc calls below. If the device is readonly, | |
1570 | * temporarily switch to read-write to do this. | |
1571 | */ | |
1572 | if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { | |
1573 | if ((error = xfs_qm_qino_alloc(mp, &uip, | |
1574 | sbflags | XFS_SB_UQUOTINO, | |
1575 | flags | XFS_QMOPT_UQUOTA))) | |
1576 | return XFS_ERROR(error); | |
1577 | ||
1578 | flags &= ~XFS_QMOPT_SBVERSION; | |
1579 | } | |
c8ad20ff NS |
1580 | if (XFS_IS_OQUOTA_ON(mp) && gip == NULL) { |
1581 | flags |= (XFS_IS_GQUOTA_ON(mp) ? | |
1582 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1583 | error = xfs_qm_qino_alloc(mp, &gip, | |
1584 | sbflags | XFS_SB_GQUOTINO, flags); | |
1585 | if (error) { | |
1da177e4 | 1586 | if (uip) |
43355099 | 1587 | IRELE(uip); |
1da177e4 LT |
1588 | |
1589 | return XFS_ERROR(error); | |
1590 | } | |
1591 | } | |
1592 | ||
8a7b8a89 CH |
1593 | mp->m_quotainfo->qi_uquotaip = uip; |
1594 | mp->m_quotainfo->qi_gquotaip = gip; | |
1da177e4 | 1595 | |
014c2544 | 1596 | return 0; |
1da177e4 LT |
1597 | } |
1598 | ||
92b2e5b3 CH |
1599 | STATIC void |
1600 | xfs_qm_dqfree_one( | |
1601 | struct xfs_dquot *dqp) | |
1602 | { | |
1603 | struct xfs_mount *mp = dqp->q_mount; | |
1604 | struct xfs_quotainfo *qi = mp->m_quotainfo; | |
1da177e4 | 1605 | |
92b2e5b3 CH |
1606 | mutex_lock(&dqp->q_hash->qh_lock); |
1607 | list_del_init(&dqp->q_hashlist); | |
1608 | dqp->q_hash->qh_version++; | |
1609 | mutex_unlock(&dqp->q_hash->qh_lock); | |
368e1361 | 1610 | |
92b2e5b3 CH |
1611 | mutex_lock(&qi->qi_dqlist_lock); |
1612 | list_del_init(&dqp->q_mplist); | |
1613 | qi->qi_dquots--; | |
1614 | qi->qi_dqreclaims++; | |
1615 | mutex_unlock(&qi->qi_dqlist_lock); | |
1616 | ||
1617 | xfs_qm_dqdestroy(dqp); | |
1618 | } | |
1619 | ||
1620 | STATIC void | |
1621 | xfs_qm_dqreclaim_one( | |
1622 | struct xfs_dquot *dqp, | |
1623 | struct list_head *dispose_list) | |
1da177e4 | 1624 | { |
92b2e5b3 CH |
1625 | struct xfs_mount *mp = dqp->q_mount; |
1626 | int error; | |
1da177e4 | 1627 | |
92b2e5b3 CH |
1628 | if (!xfs_dqlock_nowait(dqp)) |
1629 | goto out_busy; | |
bf72de31 | 1630 | |
92b2e5b3 CH |
1631 | /* |
1632 | * This dquot has acquired a reference in the meantime remove it from | |
1633 | * the freelist and try again. | |
1634 | */ | |
1635 | if (dqp->q_nrefs) { | |
1636 | xfs_dqunlock(dqp); | |
1da177e4 | 1637 | |
92b2e5b3 | 1638 | trace_xfs_dqreclaim_want(dqp); |
48776fd2 | 1639 | XFS_STATS_INC(xs_qm_dqwants); |
1da177e4 | 1640 | |
92b2e5b3 CH |
1641 | list_del_init(&dqp->q_freelist); |
1642 | xfs_Gqm->qm_dqfrlist_cnt--; | |
48776fd2 | 1643 | XFS_STATS_DEC(xs_qm_dquot_unused); |
92b2e5b3 CH |
1644 | return; |
1645 | } | |
368e1361 | 1646 | |
92b2e5b3 CH |
1647 | ASSERT(dqp->q_hash); |
1648 | ASSERT(!list_empty(&dqp->q_mplist)); | |
1da177e4 | 1649 | |
92b2e5b3 CH |
1650 | /* |
1651 | * Try to grab the flush lock. If this dquot is in the process of | |
1652 | * getting flushed to disk, we don't want to reclaim it. | |
1653 | */ | |
1654 | if (!xfs_dqflock_nowait(dqp)) | |
1655 | goto out_busy; | |
0b1b213f | 1656 | |
92b2e5b3 CH |
1657 | /* |
1658 | * We have the flush lock so we know that this is not in the | |
1659 | * process of being flushed. So, if this is dirty, flush it | |
1660 | * DELWRI so that we don't get a freelist infested with | |
1661 | * dirty dquots. | |
1662 | */ | |
1663 | if (XFS_DQ_IS_DIRTY(dqp)) { | |
1664 | trace_xfs_dqreclaim_dirty(dqp); | |
0b1b213f | 1665 | |
92b2e5b3 CH |
1666 | /* |
1667 | * We flush it delayed write, so don't bother releasing the | |
1668 | * freelist lock. | |
1669 | */ | |
1670 | error = xfs_qm_dqflush(dqp, 0); | |
1671 | if (error) { | |
1672 | xfs_warn(mp, "%s: dquot %p flush failed", | |
1673 | __func__, dqp); | |
1da177e4 | 1674 | } |
368e1361 | 1675 | |
1da177e4 | 1676 | /* |
92b2e5b3 CH |
1677 | * Give the dquot another try on the freelist, as the |
1678 | * flushing will take some time. | |
1da177e4 | 1679 | */ |
92b2e5b3 CH |
1680 | goto out_busy; |
1681 | } | |
1682 | xfs_dqfunlock(dqp); | |
92678554 | 1683 | |
92b2e5b3 CH |
1684 | /* |
1685 | * Prevent lookups now that we are past the point of no return. | |
1686 | */ | |
1687 | dqp->dq_flags |= XFS_DQ_FREEING; | |
1688 | xfs_dqunlock(dqp); | |
92678554 | 1689 | |
92b2e5b3 CH |
1690 | ASSERT(dqp->q_nrefs == 0); |
1691 | list_move_tail(&dqp->q_freelist, dispose_list); | |
1692 | xfs_Gqm->qm_dqfrlist_cnt--; | |
48776fd2 | 1693 | XFS_STATS_DEC(xs_qm_dquot_unused); |
92678554 | 1694 | |
92b2e5b3 | 1695 | trace_xfs_dqreclaim_done(dqp); |
48776fd2 | 1696 | XFS_STATS_INC(xs_qm_dqreclaims); |
92b2e5b3 | 1697 | return; |
1da177e4 | 1698 | |
92b2e5b3 CH |
1699 | out_busy: |
1700 | xfs_dqunlock(dqp); | |
368e1361 | 1701 | |
92b2e5b3 CH |
1702 | /* |
1703 | * Move the dquot to the tail of the list so that we don't spin on it. | |
1704 | */ | |
1705 | list_move_tail(&dqp->q_freelist, &xfs_Gqm->qm_dqfrlist); | |
368e1361 | 1706 | |
92b2e5b3 | 1707 | trace_xfs_dqreclaim_busy(dqp); |
48776fd2 | 1708 | XFS_STATS_INC(xs_qm_dqreclaim_misses); |
368e1361 | 1709 | } |
1da177e4 | 1710 | |
1da177e4 | 1711 | STATIC int |
7f8275d0 | 1712 | xfs_qm_shake( |
92b2e5b3 CH |
1713 | struct shrinker *shrink, |
1714 | struct shrink_control *sc) | |
1da177e4 | 1715 | { |
92b2e5b3 CH |
1716 | int nr_to_scan = sc->nr_to_scan; |
1717 | LIST_HEAD (dispose_list); | |
1718 | struct xfs_dquot *dqp; | |
1da177e4 | 1719 | |
92b2e5b3 | 1720 | if ((sc->gfp_mask & (__GFP_FS|__GFP_WAIT)) != (__GFP_FS|__GFP_WAIT)) |
014c2544 | 1721 | return 0; |
92b2e5b3 CH |
1722 | if (!nr_to_scan) |
1723 | goto out; | |
1da177e4 | 1724 | |
92b2e5b3 CH |
1725 | mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); |
1726 | while (!list_empty(&xfs_Gqm->qm_dqfrlist)) { | |
1727 | if (nr_to_scan-- <= 0) | |
1728 | break; | |
1729 | dqp = list_first_entry(&xfs_Gqm->qm_dqfrlist, struct xfs_dquot, | |
1730 | q_freelist); | |
1731 | xfs_qm_dqreclaim_one(dqp, &dispose_list); | |
1da177e4 | 1732 | } |
92b2e5b3 | 1733 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 | 1734 | |
92b2e5b3 CH |
1735 | while (!list_empty(&dispose_list)) { |
1736 | dqp = list_first_entry(&dispose_list, struct xfs_dquot, | |
1737 | q_freelist); | |
1738 | list_del_init(&dqp->q_freelist); | |
1739 | xfs_qm_dqfree_one(dqp); | |
1740 | } | |
1741 | out: | |
1742 | return (xfs_Gqm->qm_dqfrlist_cnt / 100) * sysctl_vfs_cache_pressure; | |
1da177e4 LT |
1743 | } |
1744 | ||
1da177e4 LT |
1745 | /* |
1746 | * Start a transaction and write the incore superblock changes to | |
1747 | * disk. flags parameter indicates which fields have changed. | |
1748 | */ | |
1749 | int | |
1750 | xfs_qm_write_sb_changes( | |
1751 | xfs_mount_t *mp, | |
1752 | __int64_t flags) | |
1753 | { | |
1754 | xfs_trans_t *tp; | |
1755 | int error; | |
1756 | ||
1da177e4 LT |
1757 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); |
1758 | if ((error = xfs_trans_reserve(tp, 0, | |
1759 | mp->m_sb.sb_sectsize + 128, 0, | |
1760 | 0, | |
1761 | XFS_DEFAULT_LOG_COUNT))) { | |
1762 | xfs_trans_cancel(tp, 0); | |
014c2544 | 1763 | return error; |
1da177e4 LT |
1764 | } |
1765 | ||
1766 | xfs_mod_sb(tp, flags); | |
e5720eec | 1767 | error = xfs_trans_commit(tp, 0); |
1da177e4 | 1768 | |
e5720eec | 1769 | return error; |
1da177e4 LT |
1770 | } |
1771 | ||
1772 | ||
1773 | /* --------------- utility functions for vnodeops ---------------- */ | |
1774 | ||
1775 | ||
1776 | /* | |
6c77b0ea | 1777 | * Given an inode, a uid, gid and prid make sure that we have |
1da177e4 LT |
1778 | * allocated relevant dquot(s) on disk, and that we won't exceed inode |
1779 | * quotas by creating this file. | |
1780 | * This also attaches dquot(s) to the given inode after locking it, | |
1781 | * and returns the dquots corresponding to the uid and/or gid. | |
1782 | * | |
1783 | * in : inode (unlocked) | |
1784 | * out : udquot, gdquot with references taken and unlocked | |
1785 | */ | |
1786 | int | |
1787 | xfs_qm_vop_dqalloc( | |
7d095257 CH |
1788 | struct xfs_inode *ip, |
1789 | uid_t uid, | |
1790 | gid_t gid, | |
1791 | prid_t prid, | |
1792 | uint flags, | |
1793 | struct xfs_dquot **O_udqpp, | |
1794 | struct xfs_dquot **O_gdqpp) | |
1da177e4 | 1795 | { |
7d095257 CH |
1796 | struct xfs_mount *mp = ip->i_mount; |
1797 | struct xfs_dquot *uq, *gq; | |
1798 | int error; | |
1799 | uint lockflags; | |
1da177e4 | 1800 | |
7d095257 | 1801 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
1da177e4 LT |
1802 | return 0; |
1803 | ||
1804 | lockflags = XFS_ILOCK_EXCL; | |
1805 | xfs_ilock(ip, lockflags); | |
1806 | ||
bd186aa9 | 1807 | if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) |
1da177e4 LT |
1808 | gid = ip->i_d.di_gid; |
1809 | ||
1810 | /* | |
1811 | * Attach the dquot(s) to this inode, doing a dquot allocation | |
1812 | * if necessary. The dquot(s) will not be locked. | |
1813 | */ | |
1814 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
7d095257 CH |
1815 | error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC); |
1816 | if (error) { | |
1da177e4 | 1817 | xfs_iunlock(ip, lockflags); |
014c2544 | 1818 | return error; |
1da177e4 LT |
1819 | } |
1820 | } | |
1821 | ||
1822 | uq = gq = NULL; | |
c8ad20ff | 1823 | if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { |
1da177e4 LT |
1824 | if (ip->i_d.di_uid != uid) { |
1825 | /* | |
1826 | * What we need is the dquot that has this uid, and | |
1827 | * if we send the inode to dqget, the uid of the inode | |
1828 | * takes priority over what's sent in the uid argument. | |
1829 | * We must unlock inode here before calling dqget if | |
1830 | * we're not sending the inode, because otherwise | |
1831 | * we'll deadlock by doing trans_reserve while | |
1832 | * holding ilock. | |
1833 | */ | |
1834 | xfs_iunlock(ip, lockflags); | |
1835 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t) uid, | |
1836 | XFS_DQ_USER, | |
1837 | XFS_QMOPT_DQALLOC | | |
1838 | XFS_QMOPT_DOWARN, | |
1839 | &uq))) { | |
1840 | ASSERT(error != ENOENT); | |
014c2544 | 1841 | return error; |
1da177e4 LT |
1842 | } |
1843 | /* | |
1844 | * Get the ilock in the right order. | |
1845 | */ | |
1846 | xfs_dqunlock(uq); | |
1847 | lockflags = XFS_ILOCK_SHARED; | |
1848 | xfs_ilock(ip, lockflags); | |
1849 | } else { | |
1850 | /* | |
1851 | * Take an extra reference, because we'll return | |
1852 | * this to caller | |
1853 | */ | |
1854 | ASSERT(ip->i_udquot); | |
78e55892 | 1855 | uq = xfs_qm_dqhold(ip->i_udquot); |
1da177e4 LT |
1856 | } |
1857 | } | |
c8ad20ff | 1858 | if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { |
1da177e4 LT |
1859 | if (ip->i_d.di_gid != gid) { |
1860 | xfs_iunlock(ip, lockflags); | |
1861 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)gid, | |
1862 | XFS_DQ_GROUP, | |
1863 | XFS_QMOPT_DQALLOC | | |
1864 | XFS_QMOPT_DOWARN, | |
1865 | &gq))) { | |
1866 | if (uq) | |
1867 | xfs_qm_dqrele(uq); | |
1868 | ASSERT(error != ENOENT); | |
014c2544 | 1869 | return error; |
1da177e4 LT |
1870 | } |
1871 | xfs_dqunlock(gq); | |
1872 | lockflags = XFS_ILOCK_SHARED; | |
1873 | xfs_ilock(ip, lockflags); | |
1874 | } else { | |
1875 | ASSERT(ip->i_gdquot); | |
78e55892 | 1876 | gq = xfs_qm_dqhold(ip->i_gdquot); |
1da177e4 | 1877 | } |
c8ad20ff | 1878 | } else if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { |
6743099c | 1879 | if (xfs_get_projid(ip) != prid) { |
c8ad20ff NS |
1880 | xfs_iunlock(ip, lockflags); |
1881 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, | |
1882 | XFS_DQ_PROJ, | |
1883 | XFS_QMOPT_DQALLOC | | |
1884 | XFS_QMOPT_DOWARN, | |
1885 | &gq))) { | |
1886 | if (uq) | |
1887 | xfs_qm_dqrele(uq); | |
1888 | ASSERT(error != ENOENT); | |
1889 | return (error); | |
1890 | } | |
1891 | xfs_dqunlock(gq); | |
1892 | lockflags = XFS_ILOCK_SHARED; | |
1893 | xfs_ilock(ip, lockflags); | |
1894 | } else { | |
1895 | ASSERT(ip->i_gdquot); | |
78e55892 | 1896 | gq = xfs_qm_dqhold(ip->i_gdquot); |
c8ad20ff | 1897 | } |
1da177e4 LT |
1898 | } |
1899 | if (uq) | |
0b1b213f | 1900 | trace_xfs_dquot_dqalloc(ip); |
1da177e4 LT |
1901 | |
1902 | xfs_iunlock(ip, lockflags); | |
1903 | if (O_udqpp) | |
1904 | *O_udqpp = uq; | |
1905 | else if (uq) | |
1906 | xfs_qm_dqrele(uq); | |
1907 | if (O_gdqpp) | |
1908 | *O_gdqpp = gq; | |
1909 | else if (gq) | |
1910 | xfs_qm_dqrele(gq); | |
014c2544 | 1911 | return 0; |
1da177e4 LT |
1912 | } |
1913 | ||
1914 | /* | |
1915 | * Actually transfer ownership, and do dquot modifications. | |
1916 | * These were already reserved. | |
1917 | */ | |
1918 | xfs_dquot_t * | |
1919 | xfs_qm_vop_chown( | |
1920 | xfs_trans_t *tp, | |
1921 | xfs_inode_t *ip, | |
1922 | xfs_dquot_t **IO_olddq, | |
1923 | xfs_dquot_t *newdq) | |
1924 | { | |
1925 | xfs_dquot_t *prevdq; | |
06d10dd9 NS |
1926 | uint bfield = XFS_IS_REALTIME_INODE(ip) ? |
1927 | XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; | |
1928 | ||
7d095257 | 1929 | |
579aa9ca | 1930 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
1931 | ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); |
1932 | ||
1933 | /* old dquot */ | |
1934 | prevdq = *IO_olddq; | |
1935 | ASSERT(prevdq); | |
1936 | ASSERT(prevdq != newdq); | |
1937 | ||
06d10dd9 NS |
1938 | xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks)); |
1939 | xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); | |
1da177e4 LT |
1940 | |
1941 | /* the sparkling new dquot */ | |
06d10dd9 NS |
1942 | xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks); |
1943 | xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); | |
1da177e4 LT |
1944 | |
1945 | /* | |
78e55892 CH |
1946 | * Take an extra reference, because the inode is going to keep |
1947 | * this dquot pointer even after the trans_commit. | |
1da177e4 | 1948 | */ |
78e55892 | 1949 | *IO_olddq = xfs_qm_dqhold(newdq); |
1da177e4 | 1950 | |
014c2544 | 1951 | return prevdq; |
1da177e4 LT |
1952 | } |
1953 | ||
1954 | /* | |
c8ad20ff | 1955 | * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID). |
1da177e4 LT |
1956 | */ |
1957 | int | |
1958 | xfs_qm_vop_chown_reserve( | |
1959 | xfs_trans_t *tp, | |
1960 | xfs_inode_t *ip, | |
1961 | xfs_dquot_t *udqp, | |
1962 | xfs_dquot_t *gdqp, | |
1963 | uint flags) | |
1964 | { | |
7d095257 | 1965 | xfs_mount_t *mp = ip->i_mount; |
9a2a7de2 | 1966 | uint delblks, blkflags, prjflags = 0; |
1da177e4 | 1967 | xfs_dquot_t *unresudq, *unresgdq, *delblksudq, *delblksgdq; |
7d095257 CH |
1968 | int error; |
1969 | ||
1da177e4 | 1970 | |
579aa9ca | 1971 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); |
1da177e4 LT |
1972 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1973 | ||
1974 | delblks = ip->i_delayed_blks; | |
1975 | delblksudq = delblksgdq = unresudq = unresgdq = NULL; | |
06d10dd9 NS |
1976 | blkflags = XFS_IS_REALTIME_INODE(ip) ? |
1977 | XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS; | |
1da177e4 LT |
1978 | |
1979 | if (XFS_IS_UQUOTA_ON(mp) && udqp && | |
1149d96a | 1980 | ip->i_d.di_uid != (uid_t)be32_to_cpu(udqp->q_core.d_id)) { |
1da177e4 LT |
1981 | delblksudq = udqp; |
1982 | /* | |
1983 | * If there are delayed allocation blocks, then we have to | |
1984 | * unreserve those from the old dquot, and add them to the | |
1985 | * new dquot. | |
1986 | */ | |
1987 | if (delblks) { | |
1988 | ASSERT(ip->i_udquot); | |
1989 | unresudq = ip->i_udquot; | |
1990 | } | |
1991 | } | |
c8ad20ff | 1992 | if (XFS_IS_OQUOTA_ON(ip->i_mount) && gdqp) { |
9a2a7de2 | 1993 | if (XFS_IS_PQUOTA_ON(ip->i_mount) && |
6743099c | 1994 | xfs_get_projid(ip) != be32_to_cpu(gdqp->q_core.d_id)) |
9a2a7de2 NS |
1995 | prjflags = XFS_QMOPT_ENOSPC; |
1996 | ||
1997 | if (prjflags || | |
1998 | (XFS_IS_GQUOTA_ON(ip->i_mount) && | |
1999 | ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id))) { | |
c8ad20ff NS |
2000 | delblksgdq = gdqp; |
2001 | if (delblks) { | |
2002 | ASSERT(ip->i_gdquot); | |
2003 | unresgdq = ip->i_gdquot; | |
2004 | } | |
1da177e4 LT |
2005 | } |
2006 | } | |
2007 | ||
2008 | if ((error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, | |
2009 | delblksudq, delblksgdq, ip->i_d.di_nblocks, 1, | |
9a2a7de2 | 2010 | flags | blkflags | prjflags))) |
1da177e4 LT |
2011 | return (error); |
2012 | ||
2013 | /* | |
2014 | * Do the delayed blks reservations/unreservations now. Since, these | |
2015 | * are done without the help of a transaction, if a reservation fails | |
2016 | * its previous reservations won't be automatically undone by trans | |
2017 | * code. So, we have to do it manually here. | |
2018 | */ | |
2019 | if (delblks) { | |
2020 | /* | |
2021 | * Do the reservations first. Unreservation can't fail. | |
2022 | */ | |
2023 | ASSERT(delblksudq || delblksgdq); | |
2024 | ASSERT(unresudq || unresgdq); | |
2025 | if ((error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
2026 | delblksudq, delblksgdq, (xfs_qcnt_t)delblks, 0, | |
9a2a7de2 | 2027 | flags | blkflags | prjflags))) |
1da177e4 LT |
2028 | return (error); |
2029 | xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
2030 | unresudq, unresgdq, -((xfs_qcnt_t)delblks), 0, | |
06d10dd9 | 2031 | blkflags); |
1da177e4 LT |
2032 | } |
2033 | ||
2034 | return (0); | |
2035 | } | |
2036 | ||
2037 | int | |
2038 | xfs_qm_vop_rename_dqattach( | |
7d095257 | 2039 | struct xfs_inode **i_tab) |
1da177e4 | 2040 | { |
7d095257 CH |
2041 | struct xfs_mount *mp = i_tab[0]->i_mount; |
2042 | int i; | |
1da177e4 | 2043 | |
7d095257 | 2044 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
014c2544 | 2045 | return 0; |
1da177e4 | 2046 | |
7d095257 CH |
2047 | for (i = 0; (i < 4 && i_tab[i]); i++) { |
2048 | struct xfs_inode *ip = i_tab[i]; | |
2049 | int error; | |
2050 | ||
1da177e4 LT |
2051 | /* |
2052 | * Watch out for duplicate entries in the table. | |
2053 | */ | |
7d095257 CH |
2054 | if (i == 0 || ip != i_tab[i-1]) { |
2055 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
1da177e4 LT |
2056 | error = xfs_qm_dqattach(ip, 0); |
2057 | if (error) | |
014c2544 | 2058 | return error; |
1da177e4 LT |
2059 | } |
2060 | } | |
2061 | } | |
014c2544 | 2062 | return 0; |
1da177e4 LT |
2063 | } |
2064 | ||
2065 | void | |
7d095257 CH |
2066 | xfs_qm_vop_create_dqattach( |
2067 | struct xfs_trans *tp, | |
2068 | struct xfs_inode *ip, | |
2069 | struct xfs_dquot *udqp, | |
2070 | struct xfs_dquot *gdqp) | |
1da177e4 | 2071 | { |
7d095257 CH |
2072 | struct xfs_mount *mp = tp->t_mountp; |
2073 | ||
2074 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) | |
1da177e4 LT |
2075 | return; |
2076 | ||
579aa9ca | 2077 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
7d095257 | 2078 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1da177e4 LT |
2079 | |
2080 | if (udqp) { | |
1da177e4 | 2081 | ASSERT(ip->i_udquot == NULL); |
7d095257 | 2082 | ASSERT(XFS_IS_UQUOTA_ON(mp)); |
1149d96a | 2083 | ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id)); |
78e55892 CH |
2084 | |
2085 | ip->i_udquot = xfs_qm_dqhold(udqp); | |
1da177e4 LT |
2086 | xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); |
2087 | } | |
2088 | if (gdqp) { | |
1da177e4 | 2089 | ASSERT(ip->i_gdquot == NULL); |
7d095257 CH |
2090 | ASSERT(XFS_IS_OQUOTA_ON(mp)); |
2091 | ASSERT((XFS_IS_GQUOTA_ON(mp) ? | |
6743099c | 2092 | ip->i_d.di_gid : xfs_get_projid(ip)) == |
ee2a4f7c | 2093 | be32_to_cpu(gdqp->q_core.d_id)); |
78e55892 CH |
2094 | |
2095 | ip->i_gdquot = xfs_qm_dqhold(gdqp); | |
1da177e4 LT |
2096 | xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); |
2097 | } | |
2098 | } | |
2099 |