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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" | |
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 | 52 | struct xfs_qm *xfs_Gqm; |
6b3f6b5b | 53 | uint ndquot; |
1da177e4 LT |
54 | |
55 | kmem_zone_t *qm_dqzone; | |
56 | kmem_zone_t *qm_dqtrxzone; | |
1da177e4 LT |
57 | |
58 | STATIC void xfs_qm_list_init(xfs_dqlist_t *, char *, int); | |
59 | STATIC void xfs_qm_list_destroy(xfs_dqlist_t *); | |
60 | ||
61 | STATIC int xfs_qm_init_quotainos(xfs_mount_t *); | |
ba0f32d4 | 62 | STATIC int xfs_qm_init_quotainfo(xfs_mount_t *); |
1495f230 | 63 | STATIC int xfs_qm_shake(struct shrinker *, struct shrink_control *); |
1da177e4 | 64 | |
8e1f936b RR |
65 | static struct shrinker xfs_qm_shaker = { |
66 | .shrink = xfs_qm_shake, | |
67 | .seeks = DEFAULT_SEEKS, | |
68 | }; | |
69 | ||
1da177e4 LT |
70 | /* |
71 | * Initialize the XQM structure. | |
72 | * Note that there is not one quota manager per file system. | |
73 | */ | |
74 | STATIC struct xfs_qm * | |
75 | xfs_Gqm_init(void) | |
76 | { | |
6b3f6b5b NS |
77 | xfs_dqhash_t *udqhash, *gdqhash; |
78 | xfs_qm_t *xqm; | |
215101c3 NS |
79 | size_t hsize; |
80 | uint i; | |
1da177e4 LT |
81 | |
82 | /* | |
83 | * Initialize the dquot hash tables. | |
84 | */ | |
77e4635a | 85 | udqhash = kmem_zalloc_greedy(&hsize, |
5995cb7d | 86 | XFS_QM_HASHSIZE_LOW * sizeof(xfs_dqhash_t), |
bdfb0430 CH |
87 | XFS_QM_HASHSIZE_HIGH * sizeof(xfs_dqhash_t)); |
88 | if (!udqhash) | |
89 | goto out; | |
90 | ||
91 | gdqhash = kmem_zalloc_large(hsize); | |
d67b1b03 | 92 | if (!gdqhash) |
bdfb0430 CH |
93 | goto out_free_udqhash; |
94 | ||
77e4635a | 95 | hsize /= sizeof(xfs_dqhash_t); |
6b3f6b5b | 96 | ndquot = hsize << 8; |
1da177e4 | 97 | |
6b3f6b5b NS |
98 | xqm = kmem_zalloc(sizeof(xfs_qm_t), KM_SLEEP); |
99 | xqm->qm_dqhashmask = hsize - 1; | |
100 | xqm->qm_usr_dqhtable = udqhash; | |
101 | xqm->qm_grp_dqhtable = gdqhash; | |
1da177e4 LT |
102 | ASSERT(xqm->qm_usr_dqhtable != NULL); |
103 | ASSERT(xqm->qm_grp_dqhtable != NULL); | |
104 | ||
105 | for (i = 0; i < hsize; i++) { | |
106 | xfs_qm_list_init(&(xqm->qm_usr_dqhtable[i]), "uxdqh", i); | |
107 | xfs_qm_list_init(&(xqm->qm_grp_dqhtable[i]), "gxdqh", i); | |
108 | } | |
109 | ||
110 | /* | |
111 | * Freelist of all dquots of all file systems | |
112 | */ | |
3a8406f6 DC |
113 | INIT_LIST_HEAD(&xqm->qm_dqfrlist); |
114 | xqm->qm_dqfrlist_cnt = 0; | |
115 | mutex_init(&xqm->qm_dqfrlist_lock); | |
1da177e4 LT |
116 | |
117 | /* | |
118 | * dquot zone. we register our own low-memory callback. | |
119 | */ | |
120 | if (!qm_dqzone) { | |
121 | xqm->qm_dqzone = kmem_zone_init(sizeof(xfs_dquot_t), | |
122 | "xfs_dquots"); | |
123 | qm_dqzone = xqm->qm_dqzone; | |
124 | } else | |
125 | xqm->qm_dqzone = qm_dqzone; | |
126 | ||
8e1f936b | 127 | register_shrinker(&xfs_qm_shaker); |
1da177e4 LT |
128 | |
129 | /* | |
130 | * The t_dqinfo portion of transactions. | |
131 | */ | |
132 | if (!qm_dqtrxzone) { | |
133 | xqm->qm_dqtrxzone = kmem_zone_init(sizeof(xfs_dquot_acct_t), | |
134 | "xfs_dqtrx"); | |
135 | qm_dqtrxzone = xqm->qm_dqtrxzone; | |
136 | } else | |
137 | xqm->qm_dqtrxzone = qm_dqtrxzone; | |
138 | ||
139 | atomic_set(&xqm->qm_totaldquots, 0); | |
140 | xqm->qm_dqfree_ratio = XFS_QM_DQFREE_RATIO; | |
141 | xqm->qm_nrefs = 0; | |
1da177e4 | 142 | return xqm; |
bdfb0430 CH |
143 | |
144 | out_free_udqhash: | |
145 | kmem_free_large(udqhash); | |
146 | out: | |
147 | return NULL; | |
1da177e4 LT |
148 | } |
149 | ||
150 | /* | |
151 | * Destroy the global quota manager when its reference count goes to zero. | |
152 | */ | |
ba0f32d4 | 153 | STATIC void |
1da177e4 LT |
154 | xfs_qm_destroy( |
155 | struct xfs_qm *xqm) | |
156 | { | |
157 | int hsize, i; | |
158 | ||
159 | ASSERT(xqm != NULL); | |
160 | ASSERT(xqm->qm_nrefs == 0); | |
80a376bf | 161 | |
8e1f936b | 162 | unregister_shrinker(&xfs_qm_shaker); |
80a376bf CH |
163 | |
164 | mutex_lock(&xqm->qm_dqfrlist_lock); | |
165 | ASSERT(list_empty(&xqm->qm_dqfrlist)); | |
166 | mutex_unlock(&xqm->qm_dqfrlist_lock); | |
167 | ||
1da177e4 LT |
168 | hsize = xqm->qm_dqhashmask + 1; |
169 | for (i = 0; i < hsize; i++) { | |
170 | xfs_qm_list_destroy(&(xqm->qm_usr_dqhtable[i])); | |
171 | xfs_qm_list_destroy(&(xqm->qm_grp_dqhtable[i])); | |
172 | } | |
bdfb0430 CH |
173 | kmem_free_large(xqm->qm_usr_dqhtable); |
174 | kmem_free_large(xqm->qm_grp_dqhtable); | |
1da177e4 LT |
175 | xqm->qm_usr_dqhtable = NULL; |
176 | xqm->qm_grp_dqhtable = NULL; | |
177 | xqm->qm_dqhashmask = 0; | |
3a8406f6 | 178 | |
f0e2d93c | 179 | kmem_free(xqm); |
1da177e4 LT |
180 | } |
181 | ||
182 | /* | |
183 | * Called at mount time to let XQM know that another file system is | |
184 | * starting quotas. This isn't crucial information as the individual mount | |
185 | * structures are pretty independent, but it helps the XQM keep a | |
186 | * global view of what's going on. | |
187 | */ | |
188 | /* ARGSUSED */ | |
189 | STATIC int | |
190 | xfs_qm_hold_quotafs_ref( | |
191 | struct xfs_mount *mp) | |
192 | { | |
193 | /* | |
194 | * Need to lock the xfs_Gqm structure for things like this. For example, | |
195 | * the structure could disappear between the entry to this routine and | |
196 | * a HOLD operation if not locked. | |
197 | */ | |
e2494582 | 198 | mutex_lock(&xfs_Gqm_lock); |
1da177e4 | 199 | |
bdfb0430 | 200 | if (!xfs_Gqm) { |
1da177e4 | 201 | xfs_Gqm = xfs_Gqm_init(); |
38e712ab JL |
202 | if (!xfs_Gqm) { |
203 | mutex_unlock(&xfs_Gqm_lock); | |
bdfb0430 | 204 | return ENOMEM; |
38e712ab | 205 | } |
bdfb0430 CH |
206 | } |
207 | ||
1da177e4 LT |
208 | /* |
209 | * We can keep a list of all filesystems with quotas mounted for | |
210 | * debugging and statistical purposes, but ... | |
211 | * Just take a reference and get out. | |
212 | */ | |
e2494582 CH |
213 | xfs_Gqm->qm_nrefs++; |
214 | mutex_unlock(&xfs_Gqm_lock); | |
1da177e4 LT |
215 | |
216 | return 0; | |
217 | } | |
218 | ||
219 | ||
220 | /* | |
221 | * Release the reference that a filesystem took at mount time, | |
222 | * so that we know when we need to destroy the entire quota manager. | |
223 | */ | |
224 | /* ARGSUSED */ | |
225 | STATIC void | |
226 | xfs_qm_rele_quotafs_ref( | |
227 | struct xfs_mount *mp) | |
228 | { | |
1da177e4 LT |
229 | ASSERT(xfs_Gqm); |
230 | ASSERT(xfs_Gqm->qm_nrefs > 0); | |
231 | ||
1da177e4 LT |
232 | /* |
233 | * Destroy the entire XQM. If somebody mounts with quotaon, this'll | |
234 | * be restarted. | |
235 | */ | |
e2494582 CH |
236 | mutex_lock(&xfs_Gqm_lock); |
237 | if (--xfs_Gqm->qm_nrefs == 0) { | |
1da177e4 LT |
238 | xfs_qm_destroy(xfs_Gqm); |
239 | xfs_Gqm = NULL; | |
240 | } | |
e2494582 | 241 | mutex_unlock(&xfs_Gqm_lock); |
1da177e4 LT |
242 | } |
243 | ||
1da177e4 LT |
244 | /* |
245 | * Just destroy the quotainfo structure. | |
246 | */ | |
247 | void | |
7d095257 CH |
248 | xfs_qm_unmount( |
249 | struct xfs_mount *mp) | |
1da177e4 | 250 | { |
7d095257 | 251 | if (mp->m_quotainfo) { |
8112e9dc | 252 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 | 253 | xfs_qm_destroy_quotainfo(mp); |
7d095257 | 254 | } |
1da177e4 LT |
255 | } |
256 | ||
257 | ||
258 | /* | |
259 | * This is called from xfs_mountfs to start quotas and initialize all | |
260 | * necessary data structures like quotainfo. This is also responsible for | |
261 | * running a quotacheck as necessary. We are guaranteed that the superblock | |
262 | * is consistently read in at this point. | |
53aa7915 DC |
263 | * |
264 | * If we fail here, the mount will continue with quota turned off. We don't | |
265 | * need to inidicate success or failure at all. | |
1da177e4 | 266 | */ |
53aa7915 | 267 | void |
1da177e4 | 268 | xfs_qm_mount_quotas( |
4249023a | 269 | xfs_mount_t *mp) |
1da177e4 | 270 | { |
1da177e4 LT |
271 | int error = 0; |
272 | uint sbf; | |
273 | ||
1da177e4 LT |
274 | /* |
275 | * If quotas on realtime volumes is not supported, we disable | |
276 | * quotas immediately. | |
277 | */ | |
278 | if (mp->m_sb.sb_rextents) { | |
0b932ccc | 279 | xfs_notice(mp, "Cannot turn on quotas for realtime filesystem"); |
1da177e4 LT |
280 | mp->m_qflags = 0; |
281 | goto write_changes; | |
282 | } | |
283 | ||
1da177e4 | 284 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
155ffd07 | 285 | |
1da177e4 LT |
286 | /* |
287 | * Allocate the quotainfo structure inside the mount struct, and | |
288 | * create quotainode(s), and change/rev superblock if necessary. | |
289 | */ | |
53aa7915 DC |
290 | error = xfs_qm_init_quotainfo(mp); |
291 | if (error) { | |
1da177e4 LT |
292 | /* |
293 | * We must turn off quotas. | |
294 | */ | |
295 | ASSERT(mp->m_quotainfo == NULL); | |
296 | mp->m_qflags = 0; | |
297 | goto write_changes; | |
298 | } | |
299 | /* | |
300 | * If any of the quotas are not consistent, do a quotacheck. | |
301 | */ | |
4249023a | 302 | if (XFS_QM_NEED_QUOTACHECK(mp)) { |
53aa7915 DC |
303 | error = xfs_qm_quotacheck(mp); |
304 | if (error) { | |
305 | /* Quotacheck failed and disabled quotas. */ | |
306 | return; | |
1da177e4 | 307 | } |
1da177e4 | 308 | } |
646d5bda DD |
309 | /* |
310 | * If one type of quotas is off, then it will lose its | |
311 | * quotachecked status, since we won't be doing accounting for | |
312 | * that type anymore. | |
313 | */ | |
53aa7915 | 314 | if (!XFS_IS_UQUOTA_ON(mp)) |
646d5bda | 315 | mp->m_qflags &= ~XFS_UQUOTA_CHKD; |
53aa7915 | 316 | if (!(XFS_IS_GQUOTA_ON(mp) || XFS_IS_PQUOTA_ON(mp))) |
646d5bda | 317 | mp->m_qflags &= ~XFS_OQUOTA_CHKD; |
155ffd07 | 318 | |
1da177e4 LT |
319 | write_changes: |
320 | /* | |
3685c2a1 | 321 | * We actually don't have to acquire the m_sb_lock at all. |
1da177e4 LT |
322 | * This can only be called from mount, and that's single threaded. XXX |
323 | */ | |
3685c2a1 | 324 | spin_lock(&mp->m_sb_lock); |
1da177e4 LT |
325 | sbf = mp->m_sb.sb_qflags; |
326 | mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL; | |
3685c2a1 | 327 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
328 | |
329 | if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) { | |
330 | if (xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS)) { | |
331 | /* | |
332 | * We could only have been turning quotas off. | |
333 | * We aren't in very good shape actually because | |
334 | * the incore structures are convinced that quotas are | |
335 | * off, but the on disk superblock doesn't know that ! | |
336 | */ | |
337 | ASSERT(!(XFS_IS_QUOTA_RUNNING(mp))); | |
53487786 DC |
338 | xfs_alert(mp, "%s: Superblock update failed!", |
339 | __func__); | |
1da177e4 LT |
340 | } |
341 | } | |
342 | ||
343 | if (error) { | |
53487786 | 344 | xfs_warn(mp, "Failed to initialize disk quotas."); |
7d095257 | 345 | return; |
1da177e4 | 346 | } |
1da177e4 LT |
347 | } |
348 | ||
349 | /* | |
350 | * Called from the vfsops layer. | |
351 | */ | |
e57481dc | 352 | void |
1da177e4 LT |
353 | xfs_qm_unmount_quotas( |
354 | xfs_mount_t *mp) | |
355 | { | |
1da177e4 LT |
356 | /* |
357 | * Release the dquots that root inode, et al might be holding, | |
358 | * before we flush quotas and blow away the quotainfo structure. | |
359 | */ | |
360 | ASSERT(mp->m_rootip); | |
361 | xfs_qm_dqdetach(mp->m_rootip); | |
362 | if (mp->m_rbmip) | |
363 | xfs_qm_dqdetach(mp->m_rbmip); | |
364 | if (mp->m_rsumip) | |
365 | xfs_qm_dqdetach(mp->m_rsumip); | |
366 | ||
367 | /* | |
e57481dc | 368 | * Release the quota inodes. |
1da177e4 | 369 | */ |
1da177e4 | 370 | if (mp->m_quotainfo) { |
e57481dc CH |
371 | if (mp->m_quotainfo->qi_uquotaip) { |
372 | IRELE(mp->m_quotainfo->qi_uquotaip); | |
373 | mp->m_quotainfo->qi_uquotaip = NULL; | |
1da177e4 | 374 | } |
e57481dc CH |
375 | if (mp->m_quotainfo->qi_gquotaip) { |
376 | IRELE(mp->m_quotainfo->qi_gquotaip); | |
377 | mp->m_quotainfo->qi_gquotaip = NULL; | |
1da177e4 LT |
378 | } |
379 | } | |
1da177e4 LT |
380 | } |
381 | ||
382 | /* | |
383 | * Flush all dquots of the given file system to disk. The dquots are | |
384 | * _not_ purged from memory here, just their data written to disk. | |
385 | */ | |
ba0f32d4 | 386 | STATIC int |
1da177e4 | 387 | xfs_qm_dqflush_all( |
a7ef9bd7 | 388 | struct xfs_mount *mp) |
1da177e4 | 389 | { |
8a7b8a89 CH |
390 | struct xfs_quotainfo *q = mp->m_quotainfo; |
391 | int recl; | |
392 | struct xfs_dquot *dqp; | |
8a7b8a89 | 393 | int error; |
1da177e4 | 394 | |
8a7b8a89 | 395 | if (!q) |
014c2544 | 396 | return 0; |
1da177e4 | 397 | again: |
8a7b8a89 CH |
398 | mutex_lock(&q->qi_dqlist_lock); |
399 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 | 400 | xfs_dqlock(dqp); |
92678554 CH |
401 | if ((dqp->dq_flags & XFS_DQ_FREEING) || |
402 | !XFS_DQ_IS_DIRTY(dqp)) { | |
1da177e4 LT |
403 | xfs_dqunlock(dqp); |
404 | continue; | |
405 | } | |
0b1b213f | 406 | |
1da177e4 | 407 | /* XXX a sentinel would be better */ |
8a7b8a89 | 408 | recl = q->qi_dqreclaims; |
e1f49cf2 | 409 | if (!xfs_dqflock_nowait(dqp)) { |
1da177e4 LT |
410 | /* |
411 | * If we can't grab the flush lock then check | |
412 | * to see if the dquot has been flushed delayed | |
413 | * write. If so, grab its buffer and send it | |
414 | * out immediately. We'll be able to acquire | |
415 | * the flush lock when the I/O completes. | |
416 | */ | |
800b484e | 417 | xfs_dqflock_pushbuf_wait(dqp); |
1da177e4 LT |
418 | } |
419 | /* | |
420 | * Let go of the mplist lock. We don't want to hold it | |
421 | * across a disk write. | |
422 | */ | |
8a7b8a89 | 423 | mutex_unlock(&q->qi_dqlist_lock); |
a7ef9bd7 | 424 | error = xfs_qm_dqflush(dqp, 0); |
1da177e4 LT |
425 | xfs_dqunlock(dqp); |
426 | if (error) | |
014c2544 | 427 | return error; |
1da177e4 | 428 | |
8a7b8a89 CH |
429 | mutex_lock(&q->qi_dqlist_lock); |
430 | if (recl != q->qi_dqreclaims) { | |
431 | mutex_unlock(&q->qi_dqlist_lock); | |
1da177e4 LT |
432 | /* XXX restart limit */ |
433 | goto again; | |
434 | } | |
435 | } | |
436 | ||
8a7b8a89 | 437 | mutex_unlock(&q->qi_dqlist_lock); |
1da177e4 | 438 | /* return ! busy */ |
014c2544 | 439 | return 0; |
1da177e4 | 440 | } |
92678554 | 441 | |
1da177e4 LT |
442 | /* |
443 | * Release the group dquot pointers the user dquots may be | |
444 | * carrying around as a hint. mplist is locked on entry and exit. | |
445 | */ | |
446 | STATIC void | |
447 | xfs_qm_detach_gdquots( | |
8a7b8a89 | 448 | struct xfs_mount *mp) |
1da177e4 | 449 | { |
8a7b8a89 CH |
450 | struct xfs_quotainfo *q = mp->m_quotainfo; |
451 | struct xfs_dquot *dqp, *gdqp; | |
452 | int nrecl; | |
1da177e4 LT |
453 | |
454 | again: | |
8a7b8a89 CH |
455 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
456 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 | 457 | xfs_dqlock(dqp); |
92678554 CH |
458 | if (dqp->dq_flags & XFS_DQ_FREEING) { |
459 | xfs_dqunlock(dqp); | |
460 | mutex_unlock(&q->qi_dqlist_lock); | |
461 | delay(1); | |
462 | mutex_lock(&q->qi_dqlist_lock); | |
463 | goto again; | |
464 | } | |
1da177e4 LT |
465 | if ((gdqp = dqp->q_gdquot)) { |
466 | xfs_dqlock(gdqp); | |
467 | dqp->q_gdquot = NULL; | |
468 | } | |
469 | xfs_dqunlock(dqp); | |
470 | ||
471 | if (gdqp) { | |
472 | /* | |
473 | * Can't hold the mplist lock across a dqput. | |
474 | * XXXmust convert to marker based iterations here. | |
475 | */ | |
8a7b8a89 CH |
476 | nrecl = q->qi_dqreclaims; |
477 | mutex_unlock(&q->qi_dqlist_lock); | |
1da177e4 LT |
478 | xfs_qm_dqput(gdqp); |
479 | ||
8a7b8a89 CH |
480 | mutex_lock(&q->qi_dqlist_lock); |
481 | if (nrecl != q->qi_dqreclaims) | |
1da177e4 LT |
482 | goto again; |
483 | } | |
1da177e4 LT |
484 | } |
485 | } | |
486 | ||
487 | /* | |
488 | * Go through all the incore dquots of this file system and take them | |
489 | * off the mplist and hashlist, if the dquot type matches the dqtype | |
490 | * parameter. This is used when turning off quota accounting for | |
491 | * users and/or groups, as well as when the filesystem is unmounting. | |
492 | */ | |
493 | STATIC int | |
494 | xfs_qm_dqpurge_int( | |
8a7b8a89 CH |
495 | struct xfs_mount *mp, |
496 | uint flags) | |
1da177e4 | 497 | { |
8a7b8a89 CH |
498 | struct xfs_quotainfo *q = mp->m_quotainfo; |
499 | struct xfs_dquot *dqp, *n; | |
500 | uint dqtype; | |
92678554 CH |
501 | int nmisses = 0; |
502 | LIST_HEAD (dispose_list); | |
1da177e4 | 503 | |
8a7b8a89 | 504 | if (!q) |
014c2544 | 505 | return 0; |
1da177e4 LT |
506 | |
507 | dqtype = (flags & XFS_QMOPT_UQUOTA) ? XFS_DQ_USER : 0; | |
c8ad20ff | 508 | dqtype |= (flags & XFS_QMOPT_PQUOTA) ? XFS_DQ_PROJ : 0; |
1da177e4 LT |
509 | dqtype |= (flags & XFS_QMOPT_GQUOTA) ? XFS_DQ_GROUP : 0; |
510 | ||
8a7b8a89 | 511 | mutex_lock(&q->qi_dqlist_lock); |
1da177e4 LT |
512 | |
513 | /* | |
514 | * In the first pass through all incore dquots of this filesystem, | |
515 | * we release the group dquot pointers the user dquots may be | |
516 | * carrying around as a hint. We need to do this irrespective of | |
517 | * what's being turned off. | |
518 | */ | |
519 | xfs_qm_detach_gdquots(mp); | |
520 | ||
1da177e4 | 521 | /* |
92678554 | 522 | * Try to get rid of all of the unwanted dquots. |
1da177e4 | 523 | */ |
8a7b8a89 | 524 | list_for_each_entry_safe(dqp, n, &q->qi_dqlist, q_mplist) { |
be7ffc38 | 525 | xfs_dqlock(dqp); |
92678554 CH |
526 | if ((dqp->dq_flags & dqtype) != 0 && |
527 | !(dqp->dq_flags & XFS_DQ_FREEING)) { | |
528 | if (dqp->q_nrefs == 0) { | |
529 | dqp->dq_flags |= XFS_DQ_FREEING; | |
530 | list_move_tail(&dqp->q_mplist, &dispose_list); | |
531 | } else | |
532 | nmisses++; | |
be7ffc38 CH |
533 | } |
534 | xfs_dqunlock(dqp); | |
1da177e4 | 535 | } |
8a7b8a89 | 536 | mutex_unlock(&q->qi_dqlist_lock); |
92678554 CH |
537 | |
538 | list_for_each_entry_safe(dqp, n, &dispose_list, q_mplist) | |
539 | xfs_qm_dqpurge(dqp); | |
540 | ||
1da177e4 LT |
541 | return nmisses; |
542 | } | |
543 | ||
544 | int | |
545 | xfs_qm_dqpurge_all( | |
546 | xfs_mount_t *mp, | |
547 | uint flags) | |
548 | { | |
549 | int ndquots; | |
550 | ||
551 | /* | |
552 | * Purge the dquot cache. | |
553 | * None of the dquots should really be busy at this point. | |
554 | */ | |
555 | if (mp->m_quotainfo) { | |
556 | while ((ndquots = xfs_qm_dqpurge_int(mp, flags))) { | |
557 | delay(ndquots * 10); | |
558 | } | |
559 | } | |
560 | return 0; | |
561 | } | |
562 | ||
563 | STATIC int | |
564 | xfs_qm_dqattach_one( | |
565 | xfs_inode_t *ip, | |
566 | xfs_dqid_t id, | |
567 | uint type, | |
568 | uint doalloc, | |
1da177e4 LT |
569 | xfs_dquot_t *udqhint, /* hint */ |
570 | xfs_dquot_t **IO_idqpp) | |
571 | { | |
572 | xfs_dquot_t *dqp; | |
573 | int error; | |
574 | ||
579aa9ca | 575 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 576 | error = 0; |
8e9b6e7f | 577 | |
1da177e4 LT |
578 | /* |
579 | * See if we already have it in the inode itself. IO_idqpp is | |
580 | * &i_udquot or &i_gdquot. This made the code look weird, but | |
581 | * made the logic a lot simpler. | |
582 | */ | |
8e9b6e7f CH |
583 | dqp = *IO_idqpp; |
584 | if (dqp) { | |
0b1b213f | 585 | trace_xfs_dqattach_found(dqp); |
8e9b6e7f | 586 | return 0; |
1da177e4 LT |
587 | } |
588 | ||
589 | /* | |
590 | * udqhint is the i_udquot field in inode, and is non-NULL only | |
c8ad20ff | 591 | * when the type arg is group/project. Its purpose is to save a |
1da177e4 LT |
592 | * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside |
593 | * the user dquot. | |
594 | */ | |
8e9b6e7f CH |
595 | if (udqhint) { |
596 | ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ); | |
1da177e4 LT |
597 | xfs_dqlock(udqhint); |
598 | ||
8e9b6e7f CH |
599 | /* |
600 | * No need to take dqlock to look at the id. | |
601 | * | |
602 | * The ID can't change until it gets reclaimed, and it won't | |
603 | * be reclaimed as long as we have a ref from inode and we | |
604 | * hold the ilock. | |
605 | */ | |
606 | dqp = udqhint->q_gdquot; | |
607 | if (dqp && be32_to_cpu(dqp->q_core.d_id) == id) { | |
608 | xfs_dqlock(dqp); | |
609 | XFS_DQHOLD(dqp); | |
610 | ASSERT(*IO_idqpp == NULL); | |
611 | *IO_idqpp = dqp; | |
612 | ||
1da177e4 LT |
613 | xfs_dqunlock(dqp); |
614 | xfs_dqunlock(udqhint); | |
8e9b6e7f | 615 | return 0; |
1da177e4 | 616 | } |
8e9b6e7f CH |
617 | |
618 | /* | |
619 | * We can't hold a dquot lock when we call the dqget code. | |
620 | * We'll deadlock in no time, because of (not conforming to) | |
621 | * lock ordering - the inodelock comes before any dquot lock, | |
622 | * and we may drop and reacquire the ilock in xfs_qm_dqget(). | |
623 | */ | |
1da177e4 | 624 | xfs_dqunlock(udqhint); |
8e9b6e7f CH |
625 | } |
626 | ||
1da177e4 LT |
627 | /* |
628 | * Find the dquot from somewhere. This bumps the | |
629 | * reference count of dquot and returns it locked. | |
630 | * This can return ENOENT if dquot didn't exist on | |
631 | * disk and we didn't ask it to allocate; | |
632 | * ESRCH if quotas got turned off suddenly. | |
633 | */ | |
db3e74b5 MH |
634 | error = xfs_qm_dqget(ip->i_mount, ip, id, type, |
635 | doalloc | XFS_QMOPT_DOWARN, &dqp); | |
8e9b6e7f CH |
636 | if (error) |
637 | return error; | |
1da177e4 | 638 | |
0b1b213f | 639 | trace_xfs_dqattach_get(dqp); |
8e9b6e7f | 640 | |
1da177e4 LT |
641 | /* |
642 | * dqget may have dropped and re-acquired the ilock, but it guarantees | |
643 | * that the dquot returned is the one that should go in the inode. | |
644 | */ | |
645 | *IO_idqpp = dqp; | |
8e9b6e7f CH |
646 | xfs_dqunlock(dqp); |
647 | return 0; | |
1da177e4 LT |
648 | } |
649 | ||
650 | ||
651 | /* | |
652 | * Given a udquot and gdquot, attach a ptr to the group dquot in the | |
ab680bb7 | 653 | * udquot as a hint for future lookups. |
1da177e4 LT |
654 | */ |
655 | STATIC void | |
656 | xfs_qm_dqattach_grouphint( | |
657 | xfs_dquot_t *udq, | |
8e9b6e7f | 658 | xfs_dquot_t *gdq) |
1da177e4 LT |
659 | { |
660 | xfs_dquot_t *tmp; | |
661 | ||
8e9b6e7f | 662 | xfs_dqlock(udq); |
1da177e4 | 663 | |
ab680bb7 CH |
664 | tmp = udq->q_gdquot; |
665 | if (tmp) { | |
666 | if (tmp == gdq) | |
667 | goto done; | |
1da177e4 LT |
668 | |
669 | udq->q_gdquot = NULL; | |
1da177e4 | 670 | xfs_qm_dqrele(tmp); |
1da177e4 | 671 | } |
8e9b6e7f | 672 | |
ab680bb7 CH |
673 | xfs_dqlock(gdq); |
674 | XFS_DQHOLD(gdq); | |
8e9b6e7f | 675 | xfs_dqunlock(gdq); |
ab680bb7 CH |
676 | |
677 | udq->q_gdquot = gdq; | |
678 | done: | |
8e9b6e7f | 679 | xfs_dqunlock(udq); |
1da177e4 LT |
680 | } |
681 | ||
682 | ||
683 | /* | |
c8ad20ff NS |
684 | * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON |
685 | * into account. | |
1da177e4 | 686 | * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed. |
1da177e4 LT |
687 | * Inode may get unlocked and relocked in here, and the caller must deal with |
688 | * the consequences. | |
689 | */ | |
690 | int | |
7d095257 | 691 | xfs_qm_dqattach_locked( |
1da177e4 LT |
692 | xfs_inode_t *ip, |
693 | uint flags) | |
694 | { | |
695 | xfs_mount_t *mp = ip->i_mount; | |
696 | uint nquotas = 0; | |
697 | int error = 0; | |
698 | ||
7d095257 CH |
699 | if (!XFS_IS_QUOTA_RUNNING(mp) || |
700 | !XFS_IS_QUOTA_ON(mp) || | |
701 | !XFS_NOT_DQATTACHED(mp, ip) || | |
702 | ip->i_ino == mp->m_sb.sb_uquotino || | |
703 | ip->i_ino == mp->m_sb.sb_gquotino) | |
014c2544 | 704 | return 0; |
1da177e4 | 705 | |
7d095257 | 706 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
707 | |
708 | if (XFS_IS_UQUOTA_ON(mp)) { | |
709 | error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER, | |
710 | flags & XFS_QMOPT_DQALLOC, | |
1da177e4 LT |
711 | NULL, &ip->i_udquot); |
712 | if (error) | |
713 | goto done; | |
714 | nquotas++; | |
715 | } | |
579aa9ca CH |
716 | |
717 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); | |
c8ad20ff NS |
718 | if (XFS_IS_OQUOTA_ON(mp)) { |
719 | error = XFS_IS_GQUOTA_ON(mp) ? | |
720 | xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, | |
721 | flags & XFS_QMOPT_DQALLOC, | |
c8ad20ff | 722 | ip->i_udquot, &ip->i_gdquot) : |
6743099c | 723 | xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ, |
1da177e4 | 724 | flags & XFS_QMOPT_DQALLOC, |
1da177e4 LT |
725 | ip->i_udquot, &ip->i_gdquot); |
726 | /* | |
727 | * Don't worry about the udquot that we may have | |
728 | * attached above. It'll get detached, if not already. | |
729 | */ | |
730 | if (error) | |
731 | goto done; | |
732 | nquotas++; | |
733 | } | |
734 | ||
735 | /* | |
736 | * Attach this group quota to the user quota as a hint. | |
737 | * This WON'T, in general, result in a thrash. | |
738 | */ | |
739 | if (nquotas == 2) { | |
579aa9ca | 740 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
741 | ASSERT(ip->i_udquot); |
742 | ASSERT(ip->i_gdquot); | |
743 | ||
744 | /* | |
ab680bb7 CH |
745 | * We do not have i_udquot locked at this point, but this check |
746 | * is OK since we don't depend on the i_gdquot to be accurate | |
747 | * 100% all the time. It is just a hint, and this will | |
748 | * succeed in general. | |
1da177e4 | 749 | */ |
ab680bb7 CH |
750 | if (ip->i_udquot->q_gdquot != ip->i_gdquot) |
751 | xfs_qm_dqattach_grouphint(ip->i_udquot, ip->i_gdquot); | |
1da177e4 LT |
752 | } |
753 | ||
7d095257 | 754 | done: |
ea15ab3c CH |
755 | #ifdef DEBUG |
756 | if (!error) { | |
1da177e4 LT |
757 | if (XFS_IS_UQUOTA_ON(mp)) |
758 | ASSERT(ip->i_udquot); | |
c8ad20ff | 759 | if (XFS_IS_OQUOTA_ON(mp)) |
1da177e4 LT |
760 | ASSERT(ip->i_gdquot); |
761 | } | |
7d095257 | 762 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 763 | #endif |
7d095257 CH |
764 | return error; |
765 | } | |
1da177e4 | 766 | |
7d095257 CH |
767 | int |
768 | xfs_qm_dqattach( | |
769 | struct xfs_inode *ip, | |
770 | uint flags) | |
771 | { | |
772 | int error; | |
773 | ||
774 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
775 | error = xfs_qm_dqattach_locked(ip, flags); | |
776 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1da177e4 | 777 | |
014c2544 | 778 | return error; |
1da177e4 LT |
779 | } |
780 | ||
781 | /* | |
782 | * Release dquots (and their references) if any. | |
783 | * The inode should be locked EXCL except when this's called by | |
784 | * xfs_ireclaim. | |
785 | */ | |
786 | void | |
787 | xfs_qm_dqdetach( | |
788 | xfs_inode_t *ip) | |
789 | { | |
790 | if (!(ip->i_udquot || ip->i_gdquot)) | |
791 | return; | |
792 | ||
0b1b213f CH |
793 | trace_xfs_dquot_dqdetach(ip); |
794 | ||
1da177e4 LT |
795 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_uquotino); |
796 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_gquotino); | |
1da177e4 LT |
797 | if (ip->i_udquot) { |
798 | xfs_qm_dqrele(ip->i_udquot); | |
799 | ip->i_udquot = NULL; | |
800 | } | |
801 | if (ip->i_gdquot) { | |
802 | xfs_qm_dqrele(ip->i_gdquot); | |
803 | ip->i_gdquot = NULL; | |
804 | } | |
805 | } | |
806 | ||
a4edd1da CH |
807 | /* |
808 | * The hash chains and the mplist use the same xfs_dqhash structure as | |
809 | * their list head, but we can take the mplist qh_lock and one of the | |
810 | * hash qh_locks at the same time without any problem as they aren't | |
811 | * related. | |
812 | */ | |
813 | static struct lock_class_key xfs_quota_mplist_class; | |
1da177e4 LT |
814 | |
815 | /* | |
816 | * This initializes all the quota information that's kept in the | |
817 | * mount structure | |
818 | */ | |
ba0f32d4 | 819 | STATIC int |
1da177e4 LT |
820 | xfs_qm_init_quotainfo( |
821 | xfs_mount_t *mp) | |
822 | { | |
823 | xfs_quotainfo_t *qinf; | |
824 | int error; | |
825 | xfs_dquot_t *dqp; | |
826 | ||
827 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
828 | ||
829 | /* | |
830 | * Tell XQM that we exist as soon as possible. | |
831 | */ | |
832 | if ((error = xfs_qm_hold_quotafs_ref(mp))) { | |
014c2544 | 833 | return error; |
1da177e4 LT |
834 | } |
835 | ||
836 | qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP); | |
837 | ||
838 | /* | |
839 | * See if quotainodes are setup, and if not, allocate them, | |
840 | * and change the superblock accordingly. | |
841 | */ | |
842 | if ((error = xfs_qm_init_quotainos(mp))) { | |
f0e2d93c | 843 | kmem_free(qinf); |
1da177e4 | 844 | mp->m_quotainfo = NULL; |
014c2544 | 845 | return error; |
1da177e4 LT |
846 | } |
847 | ||
3a25404b DC |
848 | INIT_LIST_HEAD(&qinf->qi_dqlist); |
849 | mutex_init(&qinf->qi_dqlist_lock); | |
850 | lockdep_set_class(&qinf->qi_dqlist_lock, &xfs_quota_mplist_class); | |
a4edd1da | 851 | |
1da177e4 LT |
852 | qinf->qi_dqreclaims = 0; |
853 | ||
854 | /* mutex used to serialize quotaoffs */ | |
794ee1ba | 855 | mutex_init(&qinf->qi_quotaofflock); |
1da177e4 LT |
856 | |
857 | /* Precalc some constants */ | |
858 | qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
859 | ASSERT(qinf->qi_dqchunklen); | |
860 | qinf->qi_dqperchunk = BBTOB(qinf->qi_dqchunklen); | |
861 | do_div(qinf->qi_dqperchunk, sizeof(xfs_dqblk_t)); | |
862 | ||
863 | mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); | |
864 | ||
865 | /* | |
866 | * We try to get the limits from the superuser's limits fields. | |
867 | * This is quite hacky, but it is standard quota practice. | |
868 | * We look at the USR dquot with id == 0 first, but if user quotas | |
869 | * are not enabled we goto the GRP dquot with id == 0. | |
870 | * We don't really care to keep separate default limits for user | |
871 | * and group quotas, at least not at this point. | |
872 | */ | |
873 | error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)0, | |
c8ad20ff NS |
874 | XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : |
875 | (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP : | |
876 | XFS_DQ_PROJ), | |
1da177e4 LT |
877 | XFS_QMOPT_DQSUSER|XFS_QMOPT_DOWARN, |
878 | &dqp); | |
879 | if (! error) { | |
880 | xfs_disk_dquot_t *ddqp = &dqp->q_core; | |
881 | ||
882 | /* | |
883 | * The warnings and timers set the grace period given to | |
884 | * a user or group before he or she can not perform any | |
885 | * more writing. If it is zero, a default is used. | |
886 | */ | |
1149d96a CH |
887 | qinf->qi_btimelimit = ddqp->d_btimer ? |
888 | be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT; | |
889 | qinf->qi_itimelimit = ddqp->d_itimer ? | |
890 | be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT; | |
891 | qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ? | |
892 | be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT; | |
893 | qinf->qi_bwarnlimit = ddqp->d_bwarns ? | |
894 | be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT; | |
895 | qinf->qi_iwarnlimit = ddqp->d_iwarns ? | |
896 | be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT; | |
897 | qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ? | |
898 | be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT; | |
899 | qinf->qi_bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit); | |
900 | qinf->qi_bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit); | |
901 | qinf->qi_ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit); | |
902 | qinf->qi_isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit); | |
903 | qinf->qi_rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit); | |
904 | qinf->qi_rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit); | |
1da177e4 LT |
905 | |
906 | /* | |
907 | * We sent the XFS_QMOPT_DQSUSER flag to dqget because | |
908 | * we don't want this dquot cached. We haven't done a | |
909 | * quotacheck yet, and quotacheck doesn't like incore dquots. | |
910 | */ | |
911 | xfs_qm_dqdestroy(dqp); | |
912 | } else { | |
913 | qinf->qi_btimelimit = XFS_QM_BTIMELIMIT; | |
914 | qinf->qi_itimelimit = XFS_QM_ITIMELIMIT; | |
915 | qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT; | |
916 | qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT; | |
917 | qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT; | |
06d10dd9 | 918 | qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT; |
1da177e4 LT |
919 | } |
920 | ||
014c2544 | 921 | return 0; |
1da177e4 LT |
922 | } |
923 | ||
924 | ||
925 | /* | |
926 | * Gets called when unmounting a filesystem or when all quotas get | |
927 | * turned off. | |
928 | * This purges the quota inodes, destroys locks and frees itself. | |
929 | */ | |
930 | void | |
931 | xfs_qm_destroy_quotainfo( | |
932 | xfs_mount_t *mp) | |
933 | { | |
934 | xfs_quotainfo_t *qi; | |
935 | ||
936 | qi = mp->m_quotainfo; | |
937 | ASSERT(qi != NULL); | |
938 | ASSERT(xfs_Gqm != NULL); | |
939 | ||
940 | /* | |
941 | * Release the reference that XQM kept, so that we know | |
942 | * when the XQM structure should be freed. We cannot assume | |
943 | * that xfs_Gqm is non-null after this point. | |
944 | */ | |
945 | xfs_qm_rele_quotafs_ref(mp); | |
946 | ||
3a25404b DC |
947 | ASSERT(list_empty(&qi->qi_dqlist)); |
948 | mutex_destroy(&qi->qi_dqlist_lock); | |
1da177e4 LT |
949 | |
950 | if (qi->qi_uquotaip) { | |
26cc0021 | 951 | IRELE(qi->qi_uquotaip); |
1da177e4 LT |
952 | qi->qi_uquotaip = NULL; /* paranoia */ |
953 | } | |
954 | if (qi->qi_gquotaip) { | |
26cc0021 | 955 | IRELE(qi->qi_gquotaip); |
1da177e4 LT |
956 | qi->qi_gquotaip = NULL; |
957 | } | |
958 | mutex_destroy(&qi->qi_quotaofflock); | |
f0e2d93c | 959 | kmem_free(qi); |
1da177e4 LT |
960 | mp->m_quotainfo = NULL; |
961 | } | |
962 | ||
963 | ||
964 | ||
965 | /* ------------------- PRIVATE STATIC FUNCTIONS ----------------------- */ | |
966 | ||
967 | /* ARGSUSED */ | |
968 | STATIC void | |
969 | xfs_qm_list_init( | |
970 | xfs_dqlist_t *list, | |
971 | char *str, | |
972 | int n) | |
973 | { | |
794ee1ba | 974 | mutex_init(&list->qh_lock); |
e6a81f13 | 975 | INIT_LIST_HEAD(&list->qh_list); |
1da177e4 LT |
976 | list->qh_version = 0; |
977 | list->qh_nelems = 0; | |
978 | } | |
979 | ||
980 | STATIC void | |
981 | xfs_qm_list_destroy( | |
982 | xfs_dqlist_t *list) | |
983 | { | |
984 | mutex_destroy(&(list->qh_lock)); | |
985 | } | |
986 | ||
1da177e4 LT |
987 | /* |
988 | * Create an inode and return with a reference already taken, but unlocked | |
989 | * This is how we create quota inodes | |
990 | */ | |
991 | STATIC int | |
992 | xfs_qm_qino_alloc( | |
993 | xfs_mount_t *mp, | |
994 | xfs_inode_t **ip, | |
995 | __int64_t sbfields, | |
996 | uint flags) | |
997 | { | |
998 | xfs_trans_t *tp; | |
999 | int error; | |
1da177e4 LT |
1000 | int committed; |
1001 | ||
061f7209 | 1002 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE); |
1da177e4 LT |
1003 | if ((error = xfs_trans_reserve(tp, |
1004 | XFS_QM_QINOCREATE_SPACE_RES(mp), | |
1005 | XFS_CREATE_LOG_RES(mp), 0, | |
1006 | XFS_TRANS_PERM_LOG_RES, | |
1007 | XFS_CREATE_LOG_COUNT))) { | |
1008 | xfs_trans_cancel(tp, 0); | |
014c2544 | 1009 | return error; |
1da177e4 | 1010 | } |
1da177e4 | 1011 | |
6c77b0ea CH |
1012 | error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip, &committed); |
1013 | if (error) { | |
1da177e4 LT |
1014 | xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | |
1015 | XFS_TRANS_ABORT); | |
014c2544 | 1016 | return error; |
1da177e4 LT |
1017 | } |
1018 | ||
1da177e4 LT |
1019 | /* |
1020 | * Make the changes in the superblock, and log those too. | |
1021 | * sbfields arg may contain fields other than *QUOTINO; | |
1022 | * VERSIONNUM for example. | |
1023 | */ | |
3685c2a1 | 1024 | spin_lock(&mp->m_sb_lock); |
1da177e4 | 1025 | if (flags & XFS_QMOPT_SBVERSION) { |
62118709 | 1026 | ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); |
1da177e4 LT |
1027 | ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | |
1028 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)) == | |
1029 | (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1030 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)); | |
1031 | ||
62118709 | 1032 | xfs_sb_version_addquota(&mp->m_sb); |
1da177e4 LT |
1033 | mp->m_sb.sb_uquotino = NULLFSINO; |
1034 | mp->m_sb.sb_gquotino = NULLFSINO; | |
1035 | ||
1036 | /* qflags will get updated _after_ quotacheck */ | |
1037 | mp->m_sb.sb_qflags = 0; | |
1da177e4 LT |
1038 | } |
1039 | if (flags & XFS_QMOPT_UQUOTA) | |
1040 | mp->m_sb.sb_uquotino = (*ip)->i_ino; | |
1041 | else | |
1042 | mp->m_sb.sb_gquotino = (*ip)->i_ino; | |
3685c2a1 | 1043 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
1044 | xfs_mod_sb(tp, sbfields); |
1045 | ||
1c72bf90 | 1046 | if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) { |
53487786 | 1047 | xfs_alert(mp, "%s failed (error %d)!", __func__, error); |
014c2544 | 1048 | return error; |
1da177e4 | 1049 | } |
014c2544 | 1050 | return 0; |
1da177e4 LT |
1051 | } |
1052 | ||
1053 | ||
5b139738 | 1054 | STATIC void |
1da177e4 LT |
1055 | xfs_qm_reset_dqcounts( |
1056 | xfs_mount_t *mp, | |
1057 | xfs_buf_t *bp, | |
1058 | xfs_dqid_t id, | |
1059 | uint type) | |
1060 | { | |
1061 | xfs_disk_dquot_t *ddq; | |
1062 | int j; | |
1063 | ||
0b1b213f CH |
1064 | trace_xfs_reset_dqcounts(bp, _RET_IP_); |
1065 | ||
1da177e4 LT |
1066 | /* |
1067 | * Reset all counters and timers. They'll be | |
1068 | * started afresh by xfs_qm_quotacheck. | |
1069 | */ | |
1070 | #ifdef DEBUG | |
1071 | j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
1072 | do_div(j, sizeof(xfs_dqblk_t)); | |
8a7b8a89 | 1073 | ASSERT(mp->m_quotainfo->qi_dqperchunk == j); |
1da177e4 | 1074 | #endif |
62926044 | 1075 | ddq = bp->b_addr; |
8a7b8a89 | 1076 | for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { |
1da177e4 LT |
1077 | /* |
1078 | * Do a sanity check, and if needed, repair the dqblk. Don't | |
1079 | * output any warnings because it's perfectly possible to | |
c41564b5 | 1080 | * find uninitialised dquot blks. See comment in xfs_qm_dqcheck. |
1da177e4 | 1081 | */ |
a0fa2b67 | 1082 | (void) xfs_qm_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR, |
1da177e4 | 1083 | "xfs_quotacheck"); |
1149d96a CH |
1084 | ddq->d_bcount = 0; |
1085 | ddq->d_icount = 0; | |
1086 | ddq->d_rtbcount = 0; | |
1087 | ddq->d_btimer = 0; | |
1088 | ddq->d_itimer = 0; | |
1089 | ddq->d_rtbtimer = 0; | |
1090 | ddq->d_bwarns = 0; | |
1091 | ddq->d_iwarns = 0; | |
1092 | ddq->d_rtbwarns = 0; | |
1da177e4 LT |
1093 | ddq = (xfs_disk_dquot_t *) ((xfs_dqblk_t *)ddq + 1); |
1094 | } | |
1da177e4 LT |
1095 | } |
1096 | ||
1097 | STATIC int | |
1098 | xfs_qm_dqiter_bufs( | |
1099 | xfs_mount_t *mp, | |
1100 | xfs_dqid_t firstid, | |
1101 | xfs_fsblock_t bno, | |
1102 | xfs_filblks_t blkcnt, | |
1103 | uint flags) | |
1104 | { | |
1105 | xfs_buf_t *bp; | |
1106 | int error; | |
c8ad20ff | 1107 | int type; |
1da177e4 LT |
1108 | |
1109 | ASSERT(blkcnt > 0); | |
c8ad20ff NS |
1110 | type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER : |
1111 | (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP); | |
1da177e4 LT |
1112 | error = 0; |
1113 | ||
1114 | /* | |
1115 | * Blkcnt arg can be a very big number, and might even be | |
1116 | * larger than the log itself. So, we have to break it up into | |
1117 | * manageable-sized transactions. | |
1118 | * Note that we don't start a permanent transaction here; we might | |
1119 | * not be able to get a log reservation for the whole thing up front, | |
1120 | * and we don't really care to either, because we just discard | |
1121 | * everything if we were to crash in the middle of this loop. | |
1122 | */ | |
1123 | while (blkcnt--) { | |
1124 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1125 | XFS_FSB_TO_DADDR(mp, bno), | |
8a7b8a89 | 1126 | mp->m_quotainfo->qi_dqchunklen, 0, &bp); |
1da177e4 LT |
1127 | if (error) |
1128 | break; | |
1129 | ||
5b139738 | 1130 | xfs_qm_reset_dqcounts(mp, bp, firstid, type); |
61551f1e CH |
1131 | xfs_buf_delwri_queue(bp); |
1132 | xfs_buf_relse(bp); | |
1da177e4 LT |
1133 | /* |
1134 | * goto the next block. | |
1135 | */ | |
1136 | bno++; | |
8a7b8a89 | 1137 | firstid += mp->m_quotainfo->qi_dqperchunk; |
1da177e4 | 1138 | } |
014c2544 | 1139 | return error; |
1da177e4 LT |
1140 | } |
1141 | ||
1142 | /* | |
c8ad20ff | 1143 | * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a |
1da177e4 LT |
1144 | * caller supplied function for every chunk of dquots that we find. |
1145 | */ | |
1146 | STATIC int | |
1147 | xfs_qm_dqiterate( | |
1148 | xfs_mount_t *mp, | |
1149 | xfs_inode_t *qip, | |
1150 | uint flags) | |
1151 | { | |
1152 | xfs_bmbt_irec_t *map; | |
1153 | int i, nmaps; /* number of map entries */ | |
1154 | int error; /* return value */ | |
1155 | xfs_fileoff_t lblkno; | |
1156 | xfs_filblks_t maxlblkcnt; | |
1157 | xfs_dqid_t firstid; | |
1158 | xfs_fsblock_t rablkno; | |
1159 | xfs_filblks_t rablkcnt; | |
1160 | ||
1161 | error = 0; | |
1162 | /* | |
c41564b5 | 1163 | * This looks racy, but we can't keep an inode lock across a |
1da177e4 LT |
1164 | * trans_reserve. But, this gets called during quotacheck, and that |
1165 | * happens only at mount time which is single threaded. | |
1166 | */ | |
1167 | if (qip->i_d.di_nblocks == 0) | |
014c2544 | 1168 | return 0; |
1da177e4 LT |
1169 | |
1170 | map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP); | |
1171 | ||
1172 | lblkno = 0; | |
1173 | maxlblkcnt = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_MAXIOFFSET(mp)); | |
1174 | do { | |
1175 | nmaps = XFS_DQITER_MAP_SIZE; | |
1176 | /* | |
1177 | * We aren't changing the inode itself. Just changing | |
1178 | * some of its data. No new blocks are added here, and | |
1179 | * the inode is never added to the transaction. | |
1180 | */ | |
1181 | xfs_ilock(qip, XFS_ILOCK_SHARED); | |
5c8ed202 DC |
1182 | error = xfs_bmapi_read(qip, lblkno, maxlblkcnt - lblkno, |
1183 | map, &nmaps, 0); | |
1da177e4 LT |
1184 | xfs_iunlock(qip, XFS_ILOCK_SHARED); |
1185 | if (error) | |
1186 | break; | |
1187 | ||
1188 | ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); | |
1189 | for (i = 0; i < nmaps; i++) { | |
1190 | ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); | |
1191 | ASSERT(map[i].br_blockcount); | |
1192 | ||
1193 | ||
1194 | lblkno += map[i].br_blockcount; | |
1195 | ||
1196 | if (map[i].br_startblock == HOLESTARTBLOCK) | |
1197 | continue; | |
1198 | ||
1199 | firstid = (xfs_dqid_t) map[i].br_startoff * | |
8a7b8a89 | 1200 | mp->m_quotainfo->qi_dqperchunk; |
1da177e4 LT |
1201 | /* |
1202 | * Do a read-ahead on the next extent. | |
1203 | */ | |
1204 | if ((i+1 < nmaps) && | |
1205 | (map[i+1].br_startblock != HOLESTARTBLOCK)) { | |
1206 | rablkcnt = map[i+1].br_blockcount; | |
1207 | rablkno = map[i+1].br_startblock; | |
1208 | while (rablkcnt--) { | |
1a1a3e97 | 1209 | xfs_buf_readahead(mp->m_ddev_targp, |
1da177e4 | 1210 | XFS_FSB_TO_DADDR(mp, rablkno), |
8a7b8a89 | 1211 | mp->m_quotainfo->qi_dqchunklen); |
1da177e4 LT |
1212 | rablkno++; |
1213 | } | |
1214 | } | |
1215 | /* | |
1216 | * Iterate thru all the blks in the extent and | |
1217 | * reset the counters of all the dquots inside them. | |
1218 | */ | |
1219 | if ((error = xfs_qm_dqiter_bufs(mp, | |
1220 | firstid, | |
1221 | map[i].br_startblock, | |
1222 | map[i].br_blockcount, | |
1223 | flags))) { | |
1224 | break; | |
1225 | } | |
1226 | } | |
1227 | ||
1228 | if (error) | |
1229 | break; | |
1230 | } while (nmaps > 0); | |
1231 | ||
f0e2d93c | 1232 | kmem_free(map); |
1da177e4 | 1233 | |
014c2544 | 1234 | return error; |
1da177e4 LT |
1235 | } |
1236 | ||
1237 | /* | |
1238 | * Called by dqusage_adjust in doing a quotacheck. | |
52fda114 CH |
1239 | * |
1240 | * Given the inode, and a dquot id this updates both the incore dqout as well | |
1241 | * as the buffer copy. This is so that once the quotacheck is done, we can | |
1242 | * just log all the buffers, as opposed to logging numerous updates to | |
1243 | * individual dquots. | |
1da177e4 | 1244 | */ |
52fda114 | 1245 | STATIC int |
1da177e4 | 1246 | xfs_qm_quotacheck_dqadjust( |
52fda114 CH |
1247 | struct xfs_inode *ip, |
1248 | xfs_dqid_t id, | |
1249 | uint type, | |
1da177e4 LT |
1250 | xfs_qcnt_t nblks, |
1251 | xfs_qcnt_t rtblks) | |
1252 | { | |
52fda114 CH |
1253 | struct xfs_mount *mp = ip->i_mount; |
1254 | struct xfs_dquot *dqp; | |
1255 | int error; | |
1256 | ||
1257 | error = xfs_qm_dqget(mp, ip, id, type, | |
1258 | XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp); | |
1259 | if (error) { | |
1260 | /* | |
1261 | * Shouldn't be able to turn off quotas here. | |
1262 | */ | |
1263 | ASSERT(error != ESRCH); | |
1264 | ASSERT(error != ENOENT); | |
1265 | return error; | |
1266 | } | |
0b1b213f CH |
1267 | |
1268 | trace_xfs_dqadjust(dqp); | |
1269 | ||
1da177e4 LT |
1270 | /* |
1271 | * Adjust the inode count and the block count to reflect this inode's | |
1272 | * resource usage. | |
1273 | */ | |
413d57c9 | 1274 | be64_add_cpu(&dqp->q_core.d_icount, 1); |
1da177e4 LT |
1275 | dqp->q_res_icount++; |
1276 | if (nblks) { | |
413d57c9 | 1277 | be64_add_cpu(&dqp->q_core.d_bcount, nblks); |
1da177e4 LT |
1278 | dqp->q_res_bcount += nblks; |
1279 | } | |
1280 | if (rtblks) { | |
413d57c9 | 1281 | be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks); |
1da177e4 LT |
1282 | dqp->q_res_rtbcount += rtblks; |
1283 | } | |
1284 | ||
1285 | /* | |
1286 | * Set default limits, adjust timers (since we changed usages) | |
191f8488 CH |
1287 | * |
1288 | * There are no timers for the default values set in the root dquot. | |
1da177e4 | 1289 | */ |
191f8488 | 1290 | if (dqp->q_core.d_id) { |
52fda114 CH |
1291 | xfs_qm_adjust_dqlimits(mp, &dqp->q_core); |
1292 | xfs_qm_adjust_dqtimers(mp, &dqp->q_core); | |
1da177e4 LT |
1293 | } |
1294 | ||
1295 | dqp->dq_flags |= XFS_DQ_DIRTY; | |
52fda114 CH |
1296 | xfs_qm_dqput(dqp); |
1297 | return 0; | |
1da177e4 LT |
1298 | } |
1299 | ||
1300 | STATIC int | |
1301 | xfs_qm_get_rtblks( | |
1302 | xfs_inode_t *ip, | |
1303 | xfs_qcnt_t *O_rtblks) | |
1304 | { | |
1305 | xfs_filblks_t rtblks; /* total rt blks */ | |
4eea22f0 | 1306 | xfs_extnum_t idx; /* extent record index */ |
1da177e4 LT |
1307 | xfs_ifork_t *ifp; /* inode fork pointer */ |
1308 | xfs_extnum_t nextents; /* number of extent entries */ | |
1da177e4 LT |
1309 | int error; |
1310 | ||
1311 | ASSERT(XFS_IS_REALTIME_INODE(ip)); | |
1312 | ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); | |
1313 | if (!(ifp->if_flags & XFS_IFEXTENTS)) { | |
1314 | if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK))) | |
014c2544 | 1315 | return error; |
1da177e4 LT |
1316 | } |
1317 | rtblks = 0; | |
4eea22f0 | 1318 | nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); |
a6f64d4a CH |
1319 | for (idx = 0; idx < nextents; idx++) |
1320 | rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx)); | |
1da177e4 | 1321 | *O_rtblks = (xfs_qcnt_t)rtblks; |
014c2544 | 1322 | return 0; |
1da177e4 LT |
1323 | } |
1324 | ||
1325 | /* | |
1326 | * callback routine supplied to bulkstat(). Given an inumber, find its | |
1327 | * dquots and update them to account for resources taken by that inode. | |
1328 | */ | |
1329 | /* ARGSUSED */ | |
1330 | STATIC int | |
1331 | xfs_qm_dqusage_adjust( | |
1332 | xfs_mount_t *mp, /* mount point for filesystem */ | |
1333 | xfs_ino_t ino, /* inode number to get data for */ | |
1334 | void __user *buffer, /* not used */ | |
1335 | int ubsize, /* not used */ | |
1da177e4 | 1336 | int *ubused, /* not used */ |
1da177e4 LT |
1337 | int *res) /* result code value */ |
1338 | { | |
1339 | xfs_inode_t *ip; | |
52fda114 | 1340 | xfs_qcnt_t nblks, rtblks = 0; |
1da177e4 LT |
1341 | int error; |
1342 | ||
1343 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
1344 | ||
1345 | /* | |
1346 | * rootino must have its resources accounted for, not so with the quota | |
1347 | * inodes. | |
1348 | */ | |
1349 | if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) { | |
1350 | *res = BULKSTAT_RV_NOTHING; | |
1351 | return XFS_ERROR(EINVAL); | |
1352 | } | |
1353 | ||
1354 | /* | |
1355 | * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget | |
1356 | * interface expects the inode to be exclusively locked because that's | |
1357 | * the case in all other instances. It's OK that we do this because | |
1358 | * quotacheck is done only at mount time. | |
1359 | */ | |
52fda114 CH |
1360 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_EXCL, &ip); |
1361 | if (error) { | |
1da177e4 | 1362 | *res = BULKSTAT_RV_NOTHING; |
014c2544 | 1363 | return error; |
1da177e4 LT |
1364 | } |
1365 | ||
52fda114 | 1366 | ASSERT(ip->i_delayed_blks == 0); |
1da177e4 | 1367 | |
52fda114 | 1368 | if (XFS_IS_REALTIME_INODE(ip)) { |
1da177e4 LT |
1369 | /* |
1370 | * Walk thru the extent list and count the realtime blocks. | |
1371 | */ | |
52fda114 CH |
1372 | error = xfs_qm_get_rtblks(ip, &rtblks); |
1373 | if (error) | |
1374 | goto error0; | |
1da177e4 | 1375 | } |
1da177e4 | 1376 | |
52fda114 | 1377 | nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks; |
1da177e4 LT |
1378 | |
1379 | /* | |
1380 | * Add the (disk blocks and inode) resources occupied by this | |
1381 | * inode to its dquots. We do this adjustment in the incore dquot, | |
1382 | * and also copy the changes to its buffer. | |
1383 | * We don't care about putting these changes in a transaction | |
1384 | * envelope because if we crash in the middle of a 'quotacheck' | |
1385 | * we have to start from the beginning anyway. | |
1386 | * Once we're done, we'll log all the dquot bufs. | |
1387 | * | |
c41564b5 | 1388 | * The *QUOTA_ON checks below may look pretty racy, but quotachecks |
1da177e4 LT |
1389 | * and quotaoffs don't race. (Quotachecks happen at mount time only). |
1390 | */ | |
1391 | if (XFS_IS_UQUOTA_ON(mp)) { | |
52fda114 CH |
1392 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid, |
1393 | XFS_DQ_USER, nblks, rtblks); | |
1394 | if (error) | |
1395 | goto error0; | |
1da177e4 | 1396 | } |
52fda114 CH |
1397 | |
1398 | if (XFS_IS_GQUOTA_ON(mp)) { | |
1399 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid, | |
1400 | XFS_DQ_GROUP, nblks, rtblks); | |
1401 | if (error) | |
1402 | goto error0; | |
1da177e4 | 1403 | } |
1da177e4 | 1404 | |
52fda114 | 1405 | if (XFS_IS_PQUOTA_ON(mp)) { |
6743099c | 1406 | error = xfs_qm_quotacheck_dqadjust(ip, xfs_get_projid(ip), |
52fda114 CH |
1407 | XFS_DQ_PROJ, nblks, rtblks); |
1408 | if (error) | |
1409 | goto error0; | |
1410 | } | |
1411 | ||
1412 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1413 | IRELE(ip); | |
1da177e4 | 1414 | *res = BULKSTAT_RV_DIDONE; |
014c2544 | 1415 | return 0; |
52fda114 CH |
1416 | |
1417 | error0: | |
1418 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1419 | IRELE(ip); | |
1420 | *res = BULKSTAT_RV_GIVEUP; | |
1421 | return error; | |
1da177e4 LT |
1422 | } |
1423 | ||
1424 | /* | |
1425 | * Walk thru all the filesystem inodes and construct a consistent view | |
1426 | * of the disk quota world. If the quotacheck fails, disable quotas. | |
1427 | */ | |
1428 | int | |
1429 | xfs_qm_quotacheck( | |
1430 | xfs_mount_t *mp) | |
1431 | { | |
1432 | int done, count, error; | |
1433 | xfs_ino_t lastino; | |
1434 | size_t structsz; | |
1435 | xfs_inode_t *uip, *gip; | |
1436 | uint flags; | |
1437 | ||
1438 | count = INT_MAX; | |
1439 | structsz = 1; | |
1440 | lastino = 0; | |
1441 | flags = 0; | |
1442 | ||
8a7b8a89 | 1443 | ASSERT(mp->m_quotainfo->qi_uquotaip || mp->m_quotainfo->qi_gquotaip); |
1da177e4 LT |
1444 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1445 | ||
1446 | /* | |
1447 | * There should be no cached dquots. The (simplistic) quotacheck | |
1448 | * algorithm doesn't like that. | |
1449 | */ | |
3a25404b | 1450 | ASSERT(list_empty(&mp->m_quotainfo->qi_dqlist)); |
1da177e4 | 1451 | |
0b932ccc | 1452 | xfs_notice(mp, "Quotacheck needed: Please wait."); |
1da177e4 LT |
1453 | |
1454 | /* | |
c8ad20ff | 1455 | * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset |
1da177e4 LT |
1456 | * their counters to zero. We need a clean slate. |
1457 | * We don't log our changes till later. | |
1458 | */ | |
8a7b8a89 CH |
1459 | uip = mp->m_quotainfo->qi_uquotaip; |
1460 | if (uip) { | |
1461 | error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA); | |
1462 | if (error) | |
1da177e4 LT |
1463 | goto error_return; |
1464 | flags |= XFS_UQUOTA_CHKD; | |
1465 | } | |
1466 | ||
8a7b8a89 CH |
1467 | gip = mp->m_quotainfo->qi_gquotaip; |
1468 | if (gip) { | |
1469 | error = xfs_qm_dqiterate(mp, gip, XFS_IS_GQUOTA_ON(mp) ? | |
1470 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1471 | if (error) | |
1da177e4 | 1472 | goto error_return; |
c8ad20ff | 1473 | flags |= XFS_OQUOTA_CHKD; |
1da177e4 LT |
1474 | } |
1475 | ||
1476 | do { | |
1477 | /* | |
1478 | * Iterate thru all the inodes in the file system, | |
1479 | * adjusting the corresponding dquot counters in core. | |
1480 | */ | |
7dce11db CH |
1481 | error = xfs_bulkstat(mp, &lastino, &count, |
1482 | xfs_qm_dqusage_adjust, | |
1483 | structsz, NULL, &done); | |
1484 | if (error) | |
1da177e4 LT |
1485 | break; |
1486 | ||
7dce11db | 1487 | } while (!done); |
1da177e4 | 1488 | |
4b8879df DC |
1489 | /* |
1490 | * We've made all the changes that we need to make incore. | |
1491 | * Flush them down to disk buffers if everything was updated | |
1492 | * successfully. | |
1493 | */ | |
1494 | if (!error) | |
a7ef9bd7 | 1495 | error = xfs_qm_dqflush_all(mp); |
4b8879df | 1496 | |
1da177e4 LT |
1497 | /* |
1498 | * We can get this error if we couldn't do a dquot allocation inside | |
1499 | * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the | |
1500 | * dirty dquots that might be cached, we just want to get rid of them | |
1501 | * and turn quotaoff. The dquots won't be attached to any of the inodes | |
1502 | * at this point (because we intentionally didn't in dqget_noattach). | |
1503 | */ | |
1504 | if (error) { | |
8112e9dc | 1505 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 LT |
1506 | goto error_return; |
1507 | } | |
1da177e4 LT |
1508 | |
1509 | /* | |
1510 | * We didn't log anything, because if we crashed, we'll have to | |
1511 | * start the quotacheck from scratch anyway. However, we must make | |
1512 | * sure that our dquot changes are secure before we put the | |
1513 | * quotacheck'd stamp on the superblock. So, here we do a synchronous | |
1514 | * flush. | |
1515 | */ | |
a9add83e | 1516 | xfs_flush_buftarg(mp->m_ddev_targp, 1); |
1da177e4 LT |
1517 | |
1518 | /* | |
1519 | * If one type of quotas is off, then it will lose its | |
1520 | * quotachecked status, since we won't be doing accounting for | |
1521 | * that type anymore. | |
1522 | */ | |
c8ad20ff | 1523 | mp->m_qflags &= ~(XFS_OQUOTA_CHKD | XFS_UQUOTA_CHKD); |
1da177e4 LT |
1524 | mp->m_qflags |= flags; |
1525 | ||
1da177e4 LT |
1526 | error_return: |
1527 | if (error) { | |
0b932ccc DC |
1528 | xfs_warn(mp, |
1529 | "Quotacheck: Unsuccessful (Error %d): Disabling quotas.", | |
1530 | error); | |
1da177e4 LT |
1531 | /* |
1532 | * We must turn off quotas. | |
1533 | */ | |
1534 | ASSERT(mp->m_quotainfo != NULL); | |
1535 | ASSERT(xfs_Gqm != NULL); | |
1536 | xfs_qm_destroy_quotainfo(mp); | |
31d5577b | 1537 | if (xfs_mount_reset_sbqflags(mp)) { |
0b932ccc DC |
1538 | xfs_warn(mp, |
1539 | "Quotacheck: Failed to reset quota flags."); | |
31d5577b | 1540 | } |
0b932ccc DC |
1541 | } else |
1542 | xfs_notice(mp, "Quotacheck: Done."); | |
1da177e4 LT |
1543 | return (error); |
1544 | } | |
1545 | ||
1546 | /* | |
1547 | * This is called after the superblock has been read in and we're ready to | |
1548 | * iget the quota inodes. | |
1549 | */ | |
1550 | STATIC int | |
1551 | xfs_qm_init_quotainos( | |
1552 | xfs_mount_t *mp) | |
1553 | { | |
1554 | xfs_inode_t *uip, *gip; | |
1555 | int error; | |
1556 | __int64_t sbflags; | |
1557 | uint flags; | |
1558 | ||
1559 | ASSERT(mp->m_quotainfo); | |
1560 | uip = gip = NULL; | |
1561 | sbflags = 0; | |
1562 | flags = 0; | |
1563 | ||
1564 | /* | |
1565 | * Get the uquota and gquota inodes | |
1566 | */ | |
62118709 | 1567 | if (xfs_sb_version_hasquota(&mp->m_sb)) { |
1da177e4 LT |
1568 | if (XFS_IS_UQUOTA_ON(mp) && |
1569 | mp->m_sb.sb_uquotino != NULLFSINO) { | |
1570 | ASSERT(mp->m_sb.sb_uquotino > 0); | |
1571 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, | |
7b6259e7 | 1572 | 0, 0, &uip))) |
1da177e4 LT |
1573 | return XFS_ERROR(error); |
1574 | } | |
c8ad20ff | 1575 | if (XFS_IS_OQUOTA_ON(mp) && |
1da177e4 LT |
1576 | mp->m_sb.sb_gquotino != NULLFSINO) { |
1577 | ASSERT(mp->m_sb.sb_gquotino > 0); | |
1578 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, | |
7b6259e7 | 1579 | 0, 0, &gip))) { |
1da177e4 | 1580 | if (uip) |
43355099 | 1581 | IRELE(uip); |
1da177e4 LT |
1582 | return XFS_ERROR(error); |
1583 | } | |
1584 | } | |
1585 | } else { | |
1586 | flags |= XFS_QMOPT_SBVERSION; | |
1587 | sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1588 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS); | |
1589 | } | |
1590 | ||
1591 | /* | |
1592 | * Create the two inodes, if they don't exist already. The changes | |
1593 | * made above will get added to a transaction and logged in one of | |
1594 | * the qino_alloc calls below. If the device is readonly, | |
1595 | * temporarily switch to read-write to do this. | |
1596 | */ | |
1597 | if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { | |
1598 | if ((error = xfs_qm_qino_alloc(mp, &uip, | |
1599 | sbflags | XFS_SB_UQUOTINO, | |
1600 | flags | XFS_QMOPT_UQUOTA))) | |
1601 | return XFS_ERROR(error); | |
1602 | ||
1603 | flags &= ~XFS_QMOPT_SBVERSION; | |
1604 | } | |
c8ad20ff NS |
1605 | if (XFS_IS_OQUOTA_ON(mp) && gip == NULL) { |
1606 | flags |= (XFS_IS_GQUOTA_ON(mp) ? | |
1607 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1608 | error = xfs_qm_qino_alloc(mp, &gip, | |
1609 | sbflags | XFS_SB_GQUOTINO, flags); | |
1610 | if (error) { | |
1da177e4 | 1611 | if (uip) |
43355099 | 1612 | IRELE(uip); |
1da177e4 LT |
1613 | |
1614 | return XFS_ERROR(error); | |
1615 | } | |
1616 | } | |
1617 | ||
8a7b8a89 CH |
1618 | mp->m_quotainfo->qi_uquotaip = uip; |
1619 | mp->m_quotainfo->qi_gquotaip = gip; | |
1da177e4 | 1620 | |
014c2544 | 1621 | return 0; |
1da177e4 LT |
1622 | } |
1623 | ||
1624 | ||
368e1361 | 1625 | |
1da177e4 | 1626 | /* |
92678554 | 1627 | * Pop the least recently used dquot off the freelist and recycle it. |
1da177e4 | 1628 | */ |
92678554 | 1629 | STATIC struct xfs_dquot * |
368e1361 | 1630 | xfs_qm_dqreclaim_one(void) |
1da177e4 | 1631 | { |
92678554 CH |
1632 | struct xfs_dquot *dqp; |
1633 | int restarts = 0; | |
1da177e4 | 1634 | |
3a8406f6 | 1635 | mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); |
92678554 | 1636 | restart: |
3a8406f6 | 1637 | list_for_each_entry(dqp, &xfs_Gqm->qm_dqfrlist, q_freelist) { |
3a25404b | 1638 | struct xfs_mount *mp = dqp->q_mount; |
bf72de31 CH |
1639 | |
1640 | if (!xfs_dqlock_nowait(dqp)) | |
1641 | continue; | |
1da177e4 LT |
1642 | |
1643 | /* | |
be7ffc38 CH |
1644 | * This dquot has already been grabbed by dqlookup. |
1645 | * Remove it from the freelist and try again. | |
1da177e4 | 1646 | */ |
be7ffc38 | 1647 | if (dqp->q_nrefs) { |
368e1361 | 1648 | trace_xfs_dqreclaim_want(dqp); |
1da177e4 | 1649 | XQM_STATS_INC(xqmstats.xs_qm_dqwants); |
be7ffc38 CH |
1650 | |
1651 | list_del_init(&dqp->q_freelist); | |
1652 | xfs_Gqm->qm_dqfrlist_cnt--; | |
0fbca4d1 | 1653 | restarts++; |
0fbca4d1 | 1654 | goto dqunlock; |
1da177e4 LT |
1655 | } |
1656 | ||
368e1361 | 1657 | ASSERT(dqp->q_hash); |
3a25404b | 1658 | ASSERT(!list_empty(&dqp->q_mplist)); |
368e1361 | 1659 | |
1da177e4 | 1660 | /* |
0fbca4d1 DC |
1661 | * Try to grab the flush lock. If this dquot is in the process |
1662 | * of getting flushed to disk, we don't want to reclaim it. | |
1da177e4 | 1663 | */ |
0fbca4d1 DC |
1664 | if (!xfs_dqflock_nowait(dqp)) |
1665 | goto dqunlock; | |
1da177e4 LT |
1666 | |
1667 | /* | |
1668 | * We have the flush lock so we know that this is not in the | |
1669 | * process of being flushed. So, if this is dirty, flush it | |
1670 | * DELWRI so that we don't get a freelist infested with | |
1671 | * dirty dquots. | |
1672 | */ | |
1673 | if (XFS_DQ_IS_DIRTY(dqp)) { | |
3c56836f | 1674 | int error; |
0b1b213f | 1675 | |
368e1361 | 1676 | trace_xfs_dqreclaim_dirty(dqp); |
0b1b213f | 1677 | |
1da177e4 LT |
1678 | /* |
1679 | * We flush it delayed write, so don't bother | |
368e1361 | 1680 | * releasing the freelist lock. |
1da177e4 | 1681 | */ |
fdedf28b | 1682 | error = xfs_qm_dqflush(dqp, SYNC_TRYLOCK); |
3c56836f | 1683 | if (error) { |
53487786 DC |
1684 | xfs_warn(mp, "%s: dquot %p flush failed", |
1685 | __func__, dqp); | |
3c56836f | 1686 | } |
0fbca4d1 | 1687 | goto dqunlock; |
1da177e4 | 1688 | } |
92678554 | 1689 | xfs_dqfunlock(dqp); |
368e1361 | 1690 | |
1da177e4 | 1691 | /* |
92678554 CH |
1692 | * Prevent lookup now that we are going to reclaim the dquot. |
1693 | * Once XFS_DQ_FREEING is set lookup won't touch the dquot, | |
1694 | * thus we can drop the lock now. | |
1da177e4 | 1695 | */ |
92678554 CH |
1696 | dqp->dq_flags |= XFS_DQ_FREEING; |
1697 | xfs_dqunlock(dqp); | |
368e1361 | 1698 | |
92678554 CH |
1699 | mutex_lock(&dqp->q_hash->qh_lock); |
1700 | list_del_init(&dqp->q_hashlist); | |
1701 | dqp->q_hash->qh_version++; | |
1702 | mutex_unlock(&dqp->q_hash->qh_lock); | |
0b1b213f | 1703 | |
92678554 | 1704 | mutex_lock(&mp->m_quotainfo->qi_dqlist_lock); |
3a25404b DC |
1705 | list_del_init(&dqp->q_mplist); |
1706 | mp->m_quotainfo->qi_dquots--; | |
1707 | mp->m_quotainfo->qi_dqreclaims++; | |
92678554 CH |
1708 | mutex_unlock(&mp->m_quotainfo->qi_dqlist_lock); |
1709 | ||
1710 | ASSERT(dqp->q_nrefs == 0); | |
3a8406f6 DC |
1711 | list_del_init(&dqp->q_freelist); |
1712 | xfs_Gqm->qm_dqfrlist_cnt--; | |
92678554 CH |
1713 | |
1714 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); | |
1715 | return dqp; | |
0fbca4d1 | 1716 | dqunlock: |
1da177e4 | 1717 | xfs_dqunlock(dqp); |
368e1361 | 1718 | if (restarts >= XFS_QM_RECLAIM_MAX_RESTARTS) |
0fbca4d1 | 1719 | break; |
92678554 | 1720 | goto restart; |
1da177e4 | 1721 | } |
92678554 | 1722 | |
3a8406f6 | 1723 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
92678554 | 1724 | return NULL; |
1da177e4 LT |
1725 | } |
1726 | ||
368e1361 DC |
1727 | /* |
1728 | * Traverse the freelist of dquots and attempt to reclaim a maximum of | |
1729 | * 'howmany' dquots. This operation races with dqlookup(), and attempts to | |
1730 | * favor the lookup function ... | |
1731 | */ | |
1732 | STATIC int | |
1733 | xfs_qm_shake_freelist( | |
1734 | int howmany) | |
1735 | { | |
1736 | int nreclaimed = 0; | |
1737 | xfs_dquot_t *dqp; | |
1738 | ||
1739 | if (howmany <= 0) | |
1740 | return 0; | |
1741 | ||
1742 | while (nreclaimed < howmany) { | |
1743 | dqp = xfs_qm_dqreclaim_one(); | |
1744 | if (!dqp) | |
1745 | return nreclaimed; | |
1746 | xfs_qm_dqdestroy(dqp); | |
1747 | nreclaimed++; | |
1748 | } | |
1749 | return nreclaimed; | |
1750 | } | |
1da177e4 LT |
1751 | |
1752 | /* | |
1753 | * The kmem_shake interface is invoked when memory is running low. | |
1754 | */ | |
1755 | /* ARGSUSED */ | |
1756 | STATIC int | |
7f8275d0 DC |
1757 | xfs_qm_shake( |
1758 | struct shrinker *shrink, | |
1495f230 | 1759 | struct shrink_control *sc) |
1da177e4 LT |
1760 | { |
1761 | int ndqused, nfree, n; | |
1495f230 | 1762 | gfp_t gfp_mask = sc->gfp_mask; |
1da177e4 LT |
1763 | |
1764 | if (!kmem_shake_allow(gfp_mask)) | |
014c2544 | 1765 | return 0; |
1da177e4 | 1766 | if (!xfs_Gqm) |
014c2544 | 1767 | return 0; |
1da177e4 | 1768 | |
3a8406f6 | 1769 | nfree = xfs_Gqm->qm_dqfrlist_cnt; /* free dquots */ |
1da177e4 LT |
1770 | /* incore dquots in all f/s's */ |
1771 | ndqused = atomic_read(&xfs_Gqm->qm_totaldquots) - nfree; | |
1772 | ||
1773 | ASSERT(ndqused >= 0); | |
1774 | ||
1775 | if (nfree <= ndqused && nfree < ndquot) | |
014c2544 | 1776 | return 0; |
1da177e4 LT |
1777 | |
1778 | ndqused *= xfs_Gqm->qm_dqfree_ratio; /* target # of free dquots */ | |
1779 | n = nfree - ndqused - ndquot; /* # over target */ | |
1780 | ||
1781 | return xfs_qm_shake_freelist(MAX(nfree, n)); | |
1782 | } | |
1783 | ||
1784 | ||
1da177e4 LT |
1785 | /*------------------------------------------------------------------*/ |
1786 | ||
1787 | /* | |
1788 | * Return a new incore dquot. Depending on the number of | |
1789 | * dquots in the system, we either allocate a new one on the kernel heap, | |
1790 | * or reclaim a free one. | |
1791 | * Return value is B_TRUE if we allocated a new dquot, B_FALSE if we managed | |
1792 | * to reclaim an existing one from the freelist. | |
1793 | */ | |
1794 | boolean_t | |
1795 | xfs_qm_dqalloc_incore( | |
1796 | xfs_dquot_t **O_dqpp) | |
1797 | { | |
1798 | xfs_dquot_t *dqp; | |
1799 | ||
1800 | /* | |
1801 | * Check against high water mark to see if we want to pop | |
1802 | * a nincompoop dquot off the freelist. | |
1803 | */ | |
1804 | if (atomic_read(&xfs_Gqm->qm_totaldquots) >= ndquot) { | |
1805 | /* | |
1806 | * Try to recycle a dquot from the freelist. | |
1807 | */ | |
1808 | if ((dqp = xfs_qm_dqreclaim_one())) { | |
1809 | XQM_STATS_INC(xqmstats.xs_qm_dqreclaims); | |
1810 | /* | |
1811 | * Just zero the core here. The rest will get | |
1812 | * reinitialized by caller. XXX we shouldn't even | |
1813 | * do this zero ... | |
1814 | */ | |
1815 | memset(&dqp->q_core, 0, sizeof(dqp->q_core)); | |
1816 | *O_dqpp = dqp; | |
014c2544 | 1817 | return B_FALSE; |
1da177e4 LT |
1818 | } |
1819 | XQM_STATS_INC(xqmstats.xs_qm_dqreclaim_misses); | |
1820 | } | |
1821 | ||
1822 | /* | |
1823 | * Allocate a brand new dquot on the kernel heap and return it | |
1824 | * to the caller to initialize. | |
1825 | */ | |
1826 | ASSERT(xfs_Gqm->qm_dqzone != NULL); | |
1827 | *O_dqpp = kmem_zone_zalloc(xfs_Gqm->qm_dqzone, KM_SLEEP); | |
1828 | atomic_inc(&xfs_Gqm->qm_totaldquots); | |
1829 | ||
014c2544 | 1830 | return B_TRUE; |
1da177e4 LT |
1831 | } |
1832 | ||
1833 | ||
1834 | /* | |
1835 | * Start a transaction and write the incore superblock changes to | |
1836 | * disk. flags parameter indicates which fields have changed. | |
1837 | */ | |
1838 | int | |
1839 | xfs_qm_write_sb_changes( | |
1840 | xfs_mount_t *mp, | |
1841 | __int64_t flags) | |
1842 | { | |
1843 | xfs_trans_t *tp; | |
1844 | int error; | |
1845 | ||
1da177e4 LT |
1846 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); |
1847 | if ((error = xfs_trans_reserve(tp, 0, | |
1848 | mp->m_sb.sb_sectsize + 128, 0, | |
1849 | 0, | |
1850 | XFS_DEFAULT_LOG_COUNT))) { | |
1851 | xfs_trans_cancel(tp, 0); | |
014c2544 | 1852 | return error; |
1da177e4 LT |
1853 | } |
1854 | ||
1855 | xfs_mod_sb(tp, flags); | |
e5720eec | 1856 | error = xfs_trans_commit(tp, 0); |
1da177e4 | 1857 | |
e5720eec | 1858 | return error; |
1da177e4 LT |
1859 | } |
1860 | ||
1861 | ||
1862 | /* --------------- utility functions for vnodeops ---------------- */ | |
1863 | ||
1864 | ||
1865 | /* | |
6c77b0ea | 1866 | * Given an inode, a uid, gid and prid make sure that we have |
1da177e4 LT |
1867 | * allocated relevant dquot(s) on disk, and that we won't exceed inode |
1868 | * quotas by creating this file. | |
1869 | * This also attaches dquot(s) to the given inode after locking it, | |
1870 | * and returns the dquots corresponding to the uid and/or gid. | |
1871 | * | |
1872 | * in : inode (unlocked) | |
1873 | * out : udquot, gdquot with references taken and unlocked | |
1874 | */ | |
1875 | int | |
1876 | xfs_qm_vop_dqalloc( | |
7d095257 CH |
1877 | struct xfs_inode *ip, |
1878 | uid_t uid, | |
1879 | gid_t gid, | |
1880 | prid_t prid, | |
1881 | uint flags, | |
1882 | struct xfs_dquot **O_udqpp, | |
1883 | struct xfs_dquot **O_gdqpp) | |
1da177e4 | 1884 | { |
7d095257 CH |
1885 | struct xfs_mount *mp = ip->i_mount; |
1886 | struct xfs_dquot *uq, *gq; | |
1887 | int error; | |
1888 | uint lockflags; | |
1da177e4 | 1889 | |
7d095257 | 1890 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
1da177e4 LT |
1891 | return 0; |
1892 | ||
1893 | lockflags = XFS_ILOCK_EXCL; | |
1894 | xfs_ilock(ip, lockflags); | |
1895 | ||
bd186aa9 | 1896 | if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) |
1da177e4 LT |
1897 | gid = ip->i_d.di_gid; |
1898 | ||
1899 | /* | |
1900 | * Attach the dquot(s) to this inode, doing a dquot allocation | |
1901 | * if necessary. The dquot(s) will not be locked. | |
1902 | */ | |
1903 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
7d095257 CH |
1904 | error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC); |
1905 | if (error) { | |
1da177e4 | 1906 | xfs_iunlock(ip, lockflags); |
014c2544 | 1907 | return error; |
1da177e4 LT |
1908 | } |
1909 | } | |
1910 | ||
1911 | uq = gq = NULL; | |
c8ad20ff | 1912 | if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { |
1da177e4 LT |
1913 | if (ip->i_d.di_uid != uid) { |
1914 | /* | |
1915 | * What we need is the dquot that has this uid, and | |
1916 | * if we send the inode to dqget, the uid of the inode | |
1917 | * takes priority over what's sent in the uid argument. | |
1918 | * We must unlock inode here before calling dqget if | |
1919 | * we're not sending the inode, because otherwise | |
1920 | * we'll deadlock by doing trans_reserve while | |
1921 | * holding ilock. | |
1922 | */ | |
1923 | xfs_iunlock(ip, lockflags); | |
1924 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t) uid, | |
1925 | XFS_DQ_USER, | |
1926 | XFS_QMOPT_DQALLOC | | |
1927 | XFS_QMOPT_DOWARN, | |
1928 | &uq))) { | |
1929 | ASSERT(error != ENOENT); | |
014c2544 | 1930 | return error; |
1da177e4 LT |
1931 | } |
1932 | /* | |
1933 | * Get the ilock in the right order. | |
1934 | */ | |
1935 | xfs_dqunlock(uq); | |
1936 | lockflags = XFS_ILOCK_SHARED; | |
1937 | xfs_ilock(ip, lockflags); | |
1938 | } else { | |
1939 | /* | |
1940 | * Take an extra reference, because we'll return | |
1941 | * this to caller | |
1942 | */ | |
1943 | ASSERT(ip->i_udquot); | |
1944 | uq = ip->i_udquot; | |
1945 | xfs_dqlock(uq); | |
1946 | XFS_DQHOLD(uq); | |
1947 | xfs_dqunlock(uq); | |
1948 | } | |
1949 | } | |
c8ad20ff | 1950 | if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { |
1da177e4 LT |
1951 | if (ip->i_d.di_gid != gid) { |
1952 | xfs_iunlock(ip, lockflags); | |
1953 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)gid, | |
1954 | XFS_DQ_GROUP, | |
1955 | XFS_QMOPT_DQALLOC | | |
1956 | XFS_QMOPT_DOWARN, | |
1957 | &gq))) { | |
1958 | if (uq) | |
1959 | xfs_qm_dqrele(uq); | |
1960 | ASSERT(error != ENOENT); | |
014c2544 | 1961 | return error; |
1da177e4 LT |
1962 | } |
1963 | xfs_dqunlock(gq); | |
1964 | lockflags = XFS_ILOCK_SHARED; | |
1965 | xfs_ilock(ip, lockflags); | |
1966 | } else { | |
1967 | ASSERT(ip->i_gdquot); | |
1968 | gq = ip->i_gdquot; | |
1969 | xfs_dqlock(gq); | |
1970 | XFS_DQHOLD(gq); | |
1971 | xfs_dqunlock(gq); | |
1972 | } | |
c8ad20ff | 1973 | } else if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { |
6743099c | 1974 | if (xfs_get_projid(ip) != prid) { |
c8ad20ff NS |
1975 | xfs_iunlock(ip, lockflags); |
1976 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, | |
1977 | XFS_DQ_PROJ, | |
1978 | XFS_QMOPT_DQALLOC | | |
1979 | XFS_QMOPT_DOWARN, | |
1980 | &gq))) { | |
1981 | if (uq) | |
1982 | xfs_qm_dqrele(uq); | |
1983 | ASSERT(error != ENOENT); | |
1984 | return (error); | |
1985 | } | |
1986 | xfs_dqunlock(gq); | |
1987 | lockflags = XFS_ILOCK_SHARED; | |
1988 | xfs_ilock(ip, lockflags); | |
1989 | } else { | |
1990 | ASSERT(ip->i_gdquot); | |
1991 | gq = ip->i_gdquot; | |
1992 | xfs_dqlock(gq); | |
1993 | XFS_DQHOLD(gq); | |
1994 | xfs_dqunlock(gq); | |
1995 | } | |
1da177e4 LT |
1996 | } |
1997 | if (uq) | |
0b1b213f | 1998 | trace_xfs_dquot_dqalloc(ip); |
1da177e4 LT |
1999 | |
2000 | xfs_iunlock(ip, lockflags); | |
2001 | if (O_udqpp) | |
2002 | *O_udqpp = uq; | |
2003 | else if (uq) | |
2004 | xfs_qm_dqrele(uq); | |
2005 | if (O_gdqpp) | |
2006 | *O_gdqpp = gq; | |
2007 | else if (gq) | |
2008 | xfs_qm_dqrele(gq); | |
014c2544 | 2009 | return 0; |
1da177e4 LT |
2010 | } |
2011 | ||
2012 | /* | |
2013 | * Actually transfer ownership, and do dquot modifications. | |
2014 | * These were already reserved. | |
2015 | */ | |
2016 | xfs_dquot_t * | |
2017 | xfs_qm_vop_chown( | |
2018 | xfs_trans_t *tp, | |
2019 | xfs_inode_t *ip, | |
2020 | xfs_dquot_t **IO_olddq, | |
2021 | xfs_dquot_t *newdq) | |
2022 | { | |
2023 | xfs_dquot_t *prevdq; | |
06d10dd9 NS |
2024 | uint bfield = XFS_IS_REALTIME_INODE(ip) ? |
2025 | XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; | |
2026 | ||
7d095257 | 2027 | |
579aa9ca | 2028 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
2029 | ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); |
2030 | ||
2031 | /* old dquot */ | |
2032 | prevdq = *IO_olddq; | |
2033 | ASSERT(prevdq); | |
2034 | ASSERT(prevdq != newdq); | |
2035 | ||
06d10dd9 NS |
2036 | xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks)); |
2037 | xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); | |
1da177e4 LT |
2038 | |
2039 | /* the sparkling new dquot */ | |
06d10dd9 NS |
2040 | xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks); |
2041 | xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); | |
1da177e4 LT |
2042 | |
2043 | /* | |
2044 | * Take an extra reference, because the inode | |
2045 | * is going to keep this dquot pointer even | |
2046 | * after the trans_commit. | |
2047 | */ | |
2048 | xfs_dqlock(newdq); | |
2049 | XFS_DQHOLD(newdq); | |
2050 | xfs_dqunlock(newdq); | |
2051 | *IO_olddq = newdq; | |
2052 | ||
014c2544 | 2053 | return prevdq; |
1da177e4 LT |
2054 | } |
2055 | ||
2056 | /* | |
c8ad20ff | 2057 | * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID). |
1da177e4 LT |
2058 | */ |
2059 | int | |
2060 | xfs_qm_vop_chown_reserve( | |
2061 | xfs_trans_t *tp, | |
2062 | xfs_inode_t *ip, | |
2063 | xfs_dquot_t *udqp, | |
2064 | xfs_dquot_t *gdqp, | |
2065 | uint flags) | |
2066 | { | |
7d095257 | 2067 | xfs_mount_t *mp = ip->i_mount; |
9a2a7de2 | 2068 | uint delblks, blkflags, prjflags = 0; |
1da177e4 | 2069 | xfs_dquot_t *unresudq, *unresgdq, *delblksudq, *delblksgdq; |
7d095257 CH |
2070 | int error; |
2071 | ||
1da177e4 | 2072 | |
579aa9ca | 2073 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); |
1da177e4 LT |
2074 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
2075 | ||
2076 | delblks = ip->i_delayed_blks; | |
2077 | delblksudq = delblksgdq = unresudq = unresgdq = NULL; | |
06d10dd9 NS |
2078 | blkflags = XFS_IS_REALTIME_INODE(ip) ? |
2079 | XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS; | |
1da177e4 LT |
2080 | |
2081 | if (XFS_IS_UQUOTA_ON(mp) && udqp && | |
1149d96a | 2082 | ip->i_d.di_uid != (uid_t)be32_to_cpu(udqp->q_core.d_id)) { |
1da177e4 LT |
2083 | delblksudq = udqp; |
2084 | /* | |
2085 | * If there are delayed allocation blocks, then we have to | |
2086 | * unreserve those from the old dquot, and add them to the | |
2087 | * new dquot. | |
2088 | */ | |
2089 | if (delblks) { | |
2090 | ASSERT(ip->i_udquot); | |
2091 | unresudq = ip->i_udquot; | |
2092 | } | |
2093 | } | |
c8ad20ff | 2094 | if (XFS_IS_OQUOTA_ON(ip->i_mount) && gdqp) { |
9a2a7de2 | 2095 | if (XFS_IS_PQUOTA_ON(ip->i_mount) && |
6743099c | 2096 | xfs_get_projid(ip) != be32_to_cpu(gdqp->q_core.d_id)) |
9a2a7de2 NS |
2097 | prjflags = XFS_QMOPT_ENOSPC; |
2098 | ||
2099 | if (prjflags || | |
2100 | (XFS_IS_GQUOTA_ON(ip->i_mount) && | |
2101 | ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id))) { | |
c8ad20ff NS |
2102 | delblksgdq = gdqp; |
2103 | if (delblks) { | |
2104 | ASSERT(ip->i_gdquot); | |
2105 | unresgdq = ip->i_gdquot; | |
2106 | } | |
1da177e4 LT |
2107 | } |
2108 | } | |
2109 | ||
2110 | if ((error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, | |
2111 | delblksudq, delblksgdq, ip->i_d.di_nblocks, 1, | |
9a2a7de2 | 2112 | flags | blkflags | prjflags))) |
1da177e4 LT |
2113 | return (error); |
2114 | ||
2115 | /* | |
2116 | * Do the delayed blks reservations/unreservations now. Since, these | |
2117 | * are done without the help of a transaction, if a reservation fails | |
2118 | * its previous reservations won't be automatically undone by trans | |
2119 | * code. So, we have to do it manually here. | |
2120 | */ | |
2121 | if (delblks) { | |
2122 | /* | |
2123 | * Do the reservations first. Unreservation can't fail. | |
2124 | */ | |
2125 | ASSERT(delblksudq || delblksgdq); | |
2126 | ASSERT(unresudq || unresgdq); | |
2127 | if ((error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
2128 | delblksudq, delblksgdq, (xfs_qcnt_t)delblks, 0, | |
9a2a7de2 | 2129 | flags | blkflags | prjflags))) |
1da177e4 LT |
2130 | return (error); |
2131 | xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
2132 | unresudq, unresgdq, -((xfs_qcnt_t)delblks), 0, | |
06d10dd9 | 2133 | blkflags); |
1da177e4 LT |
2134 | } |
2135 | ||
2136 | return (0); | |
2137 | } | |
2138 | ||
2139 | int | |
2140 | xfs_qm_vop_rename_dqattach( | |
7d095257 | 2141 | struct xfs_inode **i_tab) |
1da177e4 | 2142 | { |
7d095257 CH |
2143 | struct xfs_mount *mp = i_tab[0]->i_mount; |
2144 | int i; | |
1da177e4 | 2145 | |
7d095257 | 2146 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
014c2544 | 2147 | return 0; |
1da177e4 | 2148 | |
7d095257 CH |
2149 | for (i = 0; (i < 4 && i_tab[i]); i++) { |
2150 | struct xfs_inode *ip = i_tab[i]; | |
2151 | int error; | |
2152 | ||
1da177e4 LT |
2153 | /* |
2154 | * Watch out for duplicate entries in the table. | |
2155 | */ | |
7d095257 CH |
2156 | if (i == 0 || ip != i_tab[i-1]) { |
2157 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
1da177e4 LT |
2158 | error = xfs_qm_dqattach(ip, 0); |
2159 | if (error) | |
014c2544 | 2160 | return error; |
1da177e4 LT |
2161 | } |
2162 | } | |
2163 | } | |
014c2544 | 2164 | return 0; |
1da177e4 LT |
2165 | } |
2166 | ||
2167 | void | |
7d095257 CH |
2168 | xfs_qm_vop_create_dqattach( |
2169 | struct xfs_trans *tp, | |
2170 | struct xfs_inode *ip, | |
2171 | struct xfs_dquot *udqp, | |
2172 | struct xfs_dquot *gdqp) | |
1da177e4 | 2173 | { |
7d095257 CH |
2174 | struct xfs_mount *mp = tp->t_mountp; |
2175 | ||
2176 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) | |
1da177e4 LT |
2177 | return; |
2178 | ||
579aa9ca | 2179 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
7d095257 | 2180 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1da177e4 LT |
2181 | |
2182 | if (udqp) { | |
2183 | xfs_dqlock(udqp); | |
2184 | XFS_DQHOLD(udqp); | |
2185 | xfs_dqunlock(udqp); | |
2186 | ASSERT(ip->i_udquot == NULL); | |
2187 | ip->i_udquot = udqp; | |
7d095257 | 2188 | ASSERT(XFS_IS_UQUOTA_ON(mp)); |
1149d96a | 2189 | ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id)); |
1da177e4 LT |
2190 | xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); |
2191 | } | |
2192 | if (gdqp) { | |
2193 | xfs_dqlock(gdqp); | |
2194 | XFS_DQHOLD(gdqp); | |
2195 | xfs_dqunlock(gdqp); | |
2196 | ASSERT(ip->i_gdquot == NULL); | |
2197 | ip->i_gdquot = gdqp; | |
7d095257 CH |
2198 | ASSERT(XFS_IS_OQUOTA_ON(mp)); |
2199 | ASSERT((XFS_IS_GQUOTA_ON(mp) ? | |
6743099c | 2200 | ip->i_d.di_gid : xfs_get_projid(ip)) == |
ee2a4f7c | 2201 | be32_to_cpu(gdqp->q_core.d_id)); |
1da177e4 LT |
2202 | xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); |
2203 | } | |
2204 | } | |
2205 |