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 | 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) { | |
8e9b6e7f | 608 | ASSERT(*IO_idqpp == NULL); |
8e9b6e7f | 609 | |
78e55892 | 610 | *IO_idqpp = xfs_qm_dqhold(dqp); |
1da177e4 | 611 | xfs_dqunlock(udqhint); |
8e9b6e7f | 612 | return 0; |
1da177e4 | 613 | } |
8e9b6e7f CH |
614 | |
615 | /* | |
616 | * We can't hold a dquot lock when we call the dqget code. | |
617 | * We'll deadlock in no time, because of (not conforming to) | |
618 | * lock ordering - the inodelock comes before any dquot lock, | |
619 | * and we may drop and reacquire the ilock in xfs_qm_dqget(). | |
620 | */ | |
1da177e4 | 621 | xfs_dqunlock(udqhint); |
8e9b6e7f CH |
622 | } |
623 | ||
1da177e4 LT |
624 | /* |
625 | * Find the dquot from somewhere. This bumps the | |
626 | * reference count of dquot and returns it locked. | |
627 | * This can return ENOENT if dquot didn't exist on | |
628 | * disk and we didn't ask it to allocate; | |
629 | * ESRCH if quotas got turned off suddenly. | |
630 | */ | |
db3e74b5 MH |
631 | error = xfs_qm_dqget(ip->i_mount, ip, id, type, |
632 | doalloc | XFS_QMOPT_DOWARN, &dqp); | |
8e9b6e7f CH |
633 | if (error) |
634 | return error; | |
1da177e4 | 635 | |
0b1b213f | 636 | trace_xfs_dqattach_get(dqp); |
8e9b6e7f | 637 | |
1da177e4 LT |
638 | /* |
639 | * dqget may have dropped and re-acquired the ilock, but it guarantees | |
640 | * that the dquot returned is the one that should go in the inode. | |
641 | */ | |
642 | *IO_idqpp = dqp; | |
8e9b6e7f CH |
643 | xfs_dqunlock(dqp); |
644 | return 0; | |
1da177e4 LT |
645 | } |
646 | ||
647 | ||
648 | /* | |
649 | * Given a udquot and gdquot, attach a ptr to the group dquot in the | |
ab680bb7 | 650 | * udquot as a hint for future lookups. |
1da177e4 LT |
651 | */ |
652 | STATIC void | |
653 | xfs_qm_dqattach_grouphint( | |
654 | xfs_dquot_t *udq, | |
8e9b6e7f | 655 | xfs_dquot_t *gdq) |
1da177e4 LT |
656 | { |
657 | xfs_dquot_t *tmp; | |
658 | ||
8e9b6e7f | 659 | xfs_dqlock(udq); |
1da177e4 | 660 | |
ab680bb7 CH |
661 | tmp = udq->q_gdquot; |
662 | if (tmp) { | |
663 | if (tmp == gdq) | |
664 | goto done; | |
1da177e4 LT |
665 | |
666 | udq->q_gdquot = NULL; | |
1da177e4 | 667 | xfs_qm_dqrele(tmp); |
1da177e4 | 668 | } |
8e9b6e7f | 669 | |
78e55892 | 670 | udq->q_gdquot = xfs_qm_dqhold(gdq); |
ab680bb7 | 671 | done: |
8e9b6e7f | 672 | xfs_dqunlock(udq); |
1da177e4 LT |
673 | } |
674 | ||
675 | ||
676 | /* | |
c8ad20ff NS |
677 | * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON |
678 | * into account. | |
1da177e4 | 679 | * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed. |
1da177e4 LT |
680 | * Inode may get unlocked and relocked in here, and the caller must deal with |
681 | * the consequences. | |
682 | */ | |
683 | int | |
7d095257 | 684 | xfs_qm_dqattach_locked( |
1da177e4 LT |
685 | xfs_inode_t *ip, |
686 | uint flags) | |
687 | { | |
688 | xfs_mount_t *mp = ip->i_mount; | |
689 | uint nquotas = 0; | |
690 | int error = 0; | |
691 | ||
7d095257 CH |
692 | if (!XFS_IS_QUOTA_RUNNING(mp) || |
693 | !XFS_IS_QUOTA_ON(mp) || | |
694 | !XFS_NOT_DQATTACHED(mp, ip) || | |
695 | ip->i_ino == mp->m_sb.sb_uquotino || | |
696 | ip->i_ino == mp->m_sb.sb_gquotino) | |
014c2544 | 697 | return 0; |
1da177e4 | 698 | |
7d095257 | 699 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
700 | |
701 | if (XFS_IS_UQUOTA_ON(mp)) { | |
702 | error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER, | |
703 | flags & XFS_QMOPT_DQALLOC, | |
1da177e4 LT |
704 | NULL, &ip->i_udquot); |
705 | if (error) | |
706 | goto done; | |
707 | nquotas++; | |
708 | } | |
579aa9ca CH |
709 | |
710 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); | |
c8ad20ff NS |
711 | if (XFS_IS_OQUOTA_ON(mp)) { |
712 | error = XFS_IS_GQUOTA_ON(mp) ? | |
713 | xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, | |
714 | flags & XFS_QMOPT_DQALLOC, | |
c8ad20ff | 715 | ip->i_udquot, &ip->i_gdquot) : |
6743099c | 716 | xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ, |
1da177e4 | 717 | flags & XFS_QMOPT_DQALLOC, |
1da177e4 LT |
718 | ip->i_udquot, &ip->i_gdquot); |
719 | /* | |
720 | * Don't worry about the udquot that we may have | |
721 | * attached above. It'll get detached, if not already. | |
722 | */ | |
723 | if (error) | |
724 | goto done; | |
725 | nquotas++; | |
726 | } | |
727 | ||
728 | /* | |
729 | * Attach this group quota to the user quota as a hint. | |
730 | * This WON'T, in general, result in a thrash. | |
731 | */ | |
732 | if (nquotas == 2) { | |
579aa9ca | 733 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
734 | ASSERT(ip->i_udquot); |
735 | ASSERT(ip->i_gdquot); | |
736 | ||
737 | /* | |
ab680bb7 CH |
738 | * We do not have i_udquot locked at this point, but this check |
739 | * is OK since we don't depend on the i_gdquot to be accurate | |
740 | * 100% all the time. It is just a hint, and this will | |
741 | * succeed in general. | |
1da177e4 | 742 | */ |
ab680bb7 CH |
743 | if (ip->i_udquot->q_gdquot != ip->i_gdquot) |
744 | xfs_qm_dqattach_grouphint(ip->i_udquot, ip->i_gdquot); | |
1da177e4 LT |
745 | } |
746 | ||
7d095257 | 747 | done: |
ea15ab3c CH |
748 | #ifdef DEBUG |
749 | if (!error) { | |
1da177e4 LT |
750 | if (XFS_IS_UQUOTA_ON(mp)) |
751 | ASSERT(ip->i_udquot); | |
c8ad20ff | 752 | if (XFS_IS_OQUOTA_ON(mp)) |
1da177e4 LT |
753 | ASSERT(ip->i_gdquot); |
754 | } | |
7d095257 | 755 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 756 | #endif |
7d095257 CH |
757 | return error; |
758 | } | |
1da177e4 | 759 | |
7d095257 CH |
760 | int |
761 | xfs_qm_dqattach( | |
762 | struct xfs_inode *ip, | |
763 | uint flags) | |
764 | { | |
765 | int error; | |
766 | ||
767 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
768 | error = xfs_qm_dqattach_locked(ip, flags); | |
769 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1da177e4 | 770 | |
014c2544 | 771 | return error; |
1da177e4 LT |
772 | } |
773 | ||
774 | /* | |
775 | * Release dquots (and their references) if any. | |
776 | * The inode should be locked EXCL except when this's called by | |
777 | * xfs_ireclaim. | |
778 | */ | |
779 | void | |
780 | xfs_qm_dqdetach( | |
781 | xfs_inode_t *ip) | |
782 | { | |
783 | if (!(ip->i_udquot || ip->i_gdquot)) | |
784 | return; | |
785 | ||
0b1b213f CH |
786 | trace_xfs_dquot_dqdetach(ip); |
787 | ||
1da177e4 LT |
788 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_uquotino); |
789 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_gquotino); | |
1da177e4 LT |
790 | if (ip->i_udquot) { |
791 | xfs_qm_dqrele(ip->i_udquot); | |
792 | ip->i_udquot = NULL; | |
793 | } | |
794 | if (ip->i_gdquot) { | |
795 | xfs_qm_dqrele(ip->i_gdquot); | |
796 | ip->i_gdquot = NULL; | |
797 | } | |
798 | } | |
799 | ||
a4edd1da CH |
800 | /* |
801 | * The hash chains and the mplist use the same xfs_dqhash structure as | |
802 | * their list head, but we can take the mplist qh_lock and one of the | |
803 | * hash qh_locks at the same time without any problem as they aren't | |
804 | * related. | |
805 | */ | |
806 | static struct lock_class_key xfs_quota_mplist_class; | |
1da177e4 LT |
807 | |
808 | /* | |
809 | * This initializes all the quota information that's kept in the | |
810 | * mount structure | |
811 | */ | |
ba0f32d4 | 812 | STATIC int |
1da177e4 LT |
813 | xfs_qm_init_quotainfo( |
814 | xfs_mount_t *mp) | |
815 | { | |
816 | xfs_quotainfo_t *qinf; | |
817 | int error; | |
818 | xfs_dquot_t *dqp; | |
819 | ||
820 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
821 | ||
822 | /* | |
823 | * Tell XQM that we exist as soon as possible. | |
824 | */ | |
825 | if ((error = xfs_qm_hold_quotafs_ref(mp))) { | |
014c2544 | 826 | return error; |
1da177e4 LT |
827 | } |
828 | ||
829 | qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP); | |
830 | ||
831 | /* | |
832 | * See if quotainodes are setup, and if not, allocate them, | |
833 | * and change the superblock accordingly. | |
834 | */ | |
835 | if ((error = xfs_qm_init_quotainos(mp))) { | |
f0e2d93c | 836 | kmem_free(qinf); |
1da177e4 | 837 | mp->m_quotainfo = NULL; |
014c2544 | 838 | return error; |
1da177e4 LT |
839 | } |
840 | ||
3a25404b DC |
841 | INIT_LIST_HEAD(&qinf->qi_dqlist); |
842 | mutex_init(&qinf->qi_dqlist_lock); | |
843 | lockdep_set_class(&qinf->qi_dqlist_lock, &xfs_quota_mplist_class); | |
a4edd1da | 844 | |
1da177e4 LT |
845 | qinf->qi_dqreclaims = 0; |
846 | ||
847 | /* mutex used to serialize quotaoffs */ | |
794ee1ba | 848 | mutex_init(&qinf->qi_quotaofflock); |
1da177e4 LT |
849 | |
850 | /* Precalc some constants */ | |
851 | qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
852 | ASSERT(qinf->qi_dqchunklen); | |
853 | qinf->qi_dqperchunk = BBTOB(qinf->qi_dqchunklen); | |
854 | do_div(qinf->qi_dqperchunk, sizeof(xfs_dqblk_t)); | |
855 | ||
856 | mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); | |
857 | ||
858 | /* | |
859 | * We try to get the limits from the superuser's limits fields. | |
860 | * This is quite hacky, but it is standard quota practice. | |
861 | * We look at the USR dquot with id == 0 first, but if user quotas | |
862 | * are not enabled we goto the GRP dquot with id == 0. | |
863 | * We don't really care to keep separate default limits for user | |
864 | * and group quotas, at least not at this point. | |
865 | */ | |
866 | error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)0, | |
c8ad20ff NS |
867 | XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : |
868 | (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP : | |
869 | XFS_DQ_PROJ), | |
1da177e4 LT |
870 | XFS_QMOPT_DQSUSER|XFS_QMOPT_DOWARN, |
871 | &dqp); | |
872 | if (! error) { | |
873 | xfs_disk_dquot_t *ddqp = &dqp->q_core; | |
874 | ||
875 | /* | |
876 | * The warnings and timers set the grace period given to | |
877 | * a user or group before he or she can not perform any | |
878 | * more writing. If it is zero, a default is used. | |
879 | */ | |
1149d96a CH |
880 | qinf->qi_btimelimit = ddqp->d_btimer ? |
881 | be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT; | |
882 | qinf->qi_itimelimit = ddqp->d_itimer ? | |
883 | be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT; | |
884 | qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ? | |
885 | be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT; | |
886 | qinf->qi_bwarnlimit = ddqp->d_bwarns ? | |
887 | be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT; | |
888 | qinf->qi_iwarnlimit = ddqp->d_iwarns ? | |
889 | be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT; | |
890 | qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ? | |
891 | be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT; | |
892 | qinf->qi_bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit); | |
893 | qinf->qi_bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit); | |
894 | qinf->qi_ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit); | |
895 | qinf->qi_isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit); | |
896 | qinf->qi_rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit); | |
897 | qinf->qi_rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit); | |
1da177e4 LT |
898 | |
899 | /* | |
900 | * We sent the XFS_QMOPT_DQSUSER flag to dqget because | |
901 | * we don't want this dquot cached. We haven't done a | |
902 | * quotacheck yet, and quotacheck doesn't like incore dquots. | |
903 | */ | |
904 | xfs_qm_dqdestroy(dqp); | |
905 | } else { | |
906 | qinf->qi_btimelimit = XFS_QM_BTIMELIMIT; | |
907 | qinf->qi_itimelimit = XFS_QM_ITIMELIMIT; | |
908 | qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT; | |
909 | qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT; | |
910 | qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT; | |
06d10dd9 | 911 | qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT; |
1da177e4 LT |
912 | } |
913 | ||
014c2544 | 914 | return 0; |
1da177e4 LT |
915 | } |
916 | ||
917 | ||
918 | /* | |
919 | * Gets called when unmounting a filesystem or when all quotas get | |
920 | * turned off. | |
921 | * This purges the quota inodes, destroys locks and frees itself. | |
922 | */ | |
923 | void | |
924 | xfs_qm_destroy_quotainfo( | |
925 | xfs_mount_t *mp) | |
926 | { | |
927 | xfs_quotainfo_t *qi; | |
928 | ||
929 | qi = mp->m_quotainfo; | |
930 | ASSERT(qi != NULL); | |
931 | ASSERT(xfs_Gqm != NULL); | |
932 | ||
933 | /* | |
934 | * Release the reference that XQM kept, so that we know | |
935 | * when the XQM structure should be freed. We cannot assume | |
936 | * that xfs_Gqm is non-null after this point. | |
937 | */ | |
938 | xfs_qm_rele_quotafs_ref(mp); | |
939 | ||
3a25404b DC |
940 | ASSERT(list_empty(&qi->qi_dqlist)); |
941 | mutex_destroy(&qi->qi_dqlist_lock); | |
1da177e4 LT |
942 | |
943 | if (qi->qi_uquotaip) { | |
26cc0021 | 944 | IRELE(qi->qi_uquotaip); |
1da177e4 LT |
945 | qi->qi_uquotaip = NULL; /* paranoia */ |
946 | } | |
947 | if (qi->qi_gquotaip) { | |
26cc0021 | 948 | IRELE(qi->qi_gquotaip); |
1da177e4 LT |
949 | qi->qi_gquotaip = NULL; |
950 | } | |
951 | mutex_destroy(&qi->qi_quotaofflock); | |
f0e2d93c | 952 | kmem_free(qi); |
1da177e4 LT |
953 | mp->m_quotainfo = NULL; |
954 | } | |
955 | ||
956 | ||
957 | ||
958 | /* ------------------- PRIVATE STATIC FUNCTIONS ----------------------- */ | |
959 | ||
960 | /* ARGSUSED */ | |
961 | STATIC void | |
962 | xfs_qm_list_init( | |
963 | xfs_dqlist_t *list, | |
964 | char *str, | |
965 | int n) | |
966 | { | |
794ee1ba | 967 | mutex_init(&list->qh_lock); |
e6a81f13 | 968 | INIT_LIST_HEAD(&list->qh_list); |
1da177e4 LT |
969 | list->qh_version = 0; |
970 | list->qh_nelems = 0; | |
971 | } | |
972 | ||
973 | STATIC void | |
974 | xfs_qm_list_destroy( | |
975 | xfs_dqlist_t *list) | |
976 | { | |
977 | mutex_destroy(&(list->qh_lock)); | |
978 | } | |
979 | ||
1da177e4 LT |
980 | /* |
981 | * Create an inode and return with a reference already taken, but unlocked | |
982 | * This is how we create quota inodes | |
983 | */ | |
984 | STATIC int | |
985 | xfs_qm_qino_alloc( | |
986 | xfs_mount_t *mp, | |
987 | xfs_inode_t **ip, | |
988 | __int64_t sbfields, | |
989 | uint flags) | |
990 | { | |
991 | xfs_trans_t *tp; | |
992 | int error; | |
1da177e4 LT |
993 | int committed; |
994 | ||
061f7209 | 995 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE); |
1da177e4 LT |
996 | if ((error = xfs_trans_reserve(tp, |
997 | XFS_QM_QINOCREATE_SPACE_RES(mp), | |
998 | XFS_CREATE_LOG_RES(mp), 0, | |
999 | XFS_TRANS_PERM_LOG_RES, | |
1000 | XFS_CREATE_LOG_COUNT))) { | |
1001 | xfs_trans_cancel(tp, 0); | |
014c2544 | 1002 | return error; |
1da177e4 | 1003 | } |
1da177e4 | 1004 | |
6c77b0ea CH |
1005 | error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip, &committed); |
1006 | if (error) { | |
1da177e4 LT |
1007 | xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | |
1008 | XFS_TRANS_ABORT); | |
014c2544 | 1009 | return error; |
1da177e4 LT |
1010 | } |
1011 | ||
1da177e4 LT |
1012 | /* |
1013 | * Make the changes in the superblock, and log those too. | |
1014 | * sbfields arg may contain fields other than *QUOTINO; | |
1015 | * VERSIONNUM for example. | |
1016 | */ | |
3685c2a1 | 1017 | spin_lock(&mp->m_sb_lock); |
1da177e4 | 1018 | if (flags & XFS_QMOPT_SBVERSION) { |
62118709 | 1019 | ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); |
1da177e4 LT |
1020 | ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | |
1021 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)) == | |
1022 | (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1023 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)); | |
1024 | ||
62118709 | 1025 | xfs_sb_version_addquota(&mp->m_sb); |
1da177e4 LT |
1026 | mp->m_sb.sb_uquotino = NULLFSINO; |
1027 | mp->m_sb.sb_gquotino = NULLFSINO; | |
1028 | ||
1029 | /* qflags will get updated _after_ quotacheck */ | |
1030 | mp->m_sb.sb_qflags = 0; | |
1da177e4 LT |
1031 | } |
1032 | if (flags & XFS_QMOPT_UQUOTA) | |
1033 | mp->m_sb.sb_uquotino = (*ip)->i_ino; | |
1034 | else | |
1035 | mp->m_sb.sb_gquotino = (*ip)->i_ino; | |
3685c2a1 | 1036 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
1037 | xfs_mod_sb(tp, sbfields); |
1038 | ||
1c72bf90 | 1039 | if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) { |
53487786 | 1040 | xfs_alert(mp, "%s failed (error %d)!", __func__, error); |
014c2544 | 1041 | return error; |
1da177e4 | 1042 | } |
014c2544 | 1043 | return 0; |
1da177e4 LT |
1044 | } |
1045 | ||
1046 | ||
5b139738 | 1047 | STATIC void |
1da177e4 LT |
1048 | xfs_qm_reset_dqcounts( |
1049 | xfs_mount_t *mp, | |
1050 | xfs_buf_t *bp, | |
1051 | xfs_dqid_t id, | |
1052 | uint type) | |
1053 | { | |
1054 | xfs_disk_dquot_t *ddq; | |
1055 | int j; | |
1056 | ||
0b1b213f CH |
1057 | trace_xfs_reset_dqcounts(bp, _RET_IP_); |
1058 | ||
1da177e4 LT |
1059 | /* |
1060 | * Reset all counters and timers. They'll be | |
1061 | * started afresh by xfs_qm_quotacheck. | |
1062 | */ | |
1063 | #ifdef DEBUG | |
1064 | j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
1065 | do_div(j, sizeof(xfs_dqblk_t)); | |
8a7b8a89 | 1066 | ASSERT(mp->m_quotainfo->qi_dqperchunk == j); |
1da177e4 | 1067 | #endif |
62926044 | 1068 | ddq = bp->b_addr; |
8a7b8a89 | 1069 | for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { |
1da177e4 LT |
1070 | /* |
1071 | * Do a sanity check, and if needed, repair the dqblk. Don't | |
1072 | * output any warnings because it's perfectly possible to | |
c41564b5 | 1073 | * find uninitialised dquot blks. See comment in xfs_qm_dqcheck. |
1da177e4 | 1074 | */ |
a0fa2b67 | 1075 | (void) xfs_qm_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR, |
1da177e4 | 1076 | "xfs_quotacheck"); |
1149d96a CH |
1077 | ddq->d_bcount = 0; |
1078 | ddq->d_icount = 0; | |
1079 | ddq->d_rtbcount = 0; | |
1080 | ddq->d_btimer = 0; | |
1081 | ddq->d_itimer = 0; | |
1082 | ddq->d_rtbtimer = 0; | |
1083 | ddq->d_bwarns = 0; | |
1084 | ddq->d_iwarns = 0; | |
1085 | ddq->d_rtbwarns = 0; | |
1da177e4 LT |
1086 | ddq = (xfs_disk_dquot_t *) ((xfs_dqblk_t *)ddq + 1); |
1087 | } | |
1da177e4 LT |
1088 | } |
1089 | ||
1090 | STATIC int | |
1091 | xfs_qm_dqiter_bufs( | |
1092 | xfs_mount_t *mp, | |
1093 | xfs_dqid_t firstid, | |
1094 | xfs_fsblock_t bno, | |
1095 | xfs_filblks_t blkcnt, | |
1096 | uint flags) | |
1097 | { | |
1098 | xfs_buf_t *bp; | |
1099 | int error; | |
c8ad20ff | 1100 | int type; |
1da177e4 LT |
1101 | |
1102 | ASSERT(blkcnt > 0); | |
c8ad20ff NS |
1103 | type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER : |
1104 | (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP); | |
1da177e4 LT |
1105 | error = 0; |
1106 | ||
1107 | /* | |
1108 | * Blkcnt arg can be a very big number, and might even be | |
1109 | * larger than the log itself. So, we have to break it up into | |
1110 | * manageable-sized transactions. | |
1111 | * Note that we don't start a permanent transaction here; we might | |
1112 | * not be able to get a log reservation for the whole thing up front, | |
1113 | * and we don't really care to either, because we just discard | |
1114 | * everything if we were to crash in the middle of this loop. | |
1115 | */ | |
1116 | while (blkcnt--) { | |
1117 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1118 | XFS_FSB_TO_DADDR(mp, bno), | |
8a7b8a89 | 1119 | mp->m_quotainfo->qi_dqchunklen, 0, &bp); |
1da177e4 LT |
1120 | if (error) |
1121 | break; | |
1122 | ||
5b139738 | 1123 | xfs_qm_reset_dqcounts(mp, bp, firstid, type); |
61551f1e CH |
1124 | xfs_buf_delwri_queue(bp); |
1125 | xfs_buf_relse(bp); | |
1da177e4 LT |
1126 | /* |
1127 | * goto the next block. | |
1128 | */ | |
1129 | bno++; | |
8a7b8a89 | 1130 | firstid += mp->m_quotainfo->qi_dqperchunk; |
1da177e4 | 1131 | } |
014c2544 | 1132 | return error; |
1da177e4 LT |
1133 | } |
1134 | ||
1135 | /* | |
c8ad20ff | 1136 | * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a |
1da177e4 LT |
1137 | * caller supplied function for every chunk of dquots that we find. |
1138 | */ | |
1139 | STATIC int | |
1140 | xfs_qm_dqiterate( | |
1141 | xfs_mount_t *mp, | |
1142 | xfs_inode_t *qip, | |
1143 | uint flags) | |
1144 | { | |
1145 | xfs_bmbt_irec_t *map; | |
1146 | int i, nmaps; /* number of map entries */ | |
1147 | int error; /* return value */ | |
1148 | xfs_fileoff_t lblkno; | |
1149 | xfs_filblks_t maxlblkcnt; | |
1150 | xfs_dqid_t firstid; | |
1151 | xfs_fsblock_t rablkno; | |
1152 | xfs_filblks_t rablkcnt; | |
1153 | ||
1154 | error = 0; | |
1155 | /* | |
c41564b5 | 1156 | * This looks racy, but we can't keep an inode lock across a |
1da177e4 LT |
1157 | * trans_reserve. But, this gets called during quotacheck, and that |
1158 | * happens only at mount time which is single threaded. | |
1159 | */ | |
1160 | if (qip->i_d.di_nblocks == 0) | |
014c2544 | 1161 | return 0; |
1da177e4 LT |
1162 | |
1163 | map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP); | |
1164 | ||
1165 | lblkno = 0; | |
1166 | maxlblkcnt = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_MAXIOFFSET(mp)); | |
1167 | do { | |
1168 | nmaps = XFS_DQITER_MAP_SIZE; | |
1169 | /* | |
1170 | * We aren't changing the inode itself. Just changing | |
1171 | * some of its data. No new blocks are added here, and | |
1172 | * the inode is never added to the transaction. | |
1173 | */ | |
1174 | xfs_ilock(qip, XFS_ILOCK_SHARED); | |
5c8ed202 DC |
1175 | error = xfs_bmapi_read(qip, lblkno, maxlblkcnt - lblkno, |
1176 | map, &nmaps, 0); | |
1da177e4 LT |
1177 | xfs_iunlock(qip, XFS_ILOCK_SHARED); |
1178 | if (error) | |
1179 | break; | |
1180 | ||
1181 | ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); | |
1182 | for (i = 0; i < nmaps; i++) { | |
1183 | ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); | |
1184 | ASSERT(map[i].br_blockcount); | |
1185 | ||
1186 | ||
1187 | lblkno += map[i].br_blockcount; | |
1188 | ||
1189 | if (map[i].br_startblock == HOLESTARTBLOCK) | |
1190 | continue; | |
1191 | ||
1192 | firstid = (xfs_dqid_t) map[i].br_startoff * | |
8a7b8a89 | 1193 | mp->m_quotainfo->qi_dqperchunk; |
1da177e4 LT |
1194 | /* |
1195 | * Do a read-ahead on the next extent. | |
1196 | */ | |
1197 | if ((i+1 < nmaps) && | |
1198 | (map[i+1].br_startblock != HOLESTARTBLOCK)) { | |
1199 | rablkcnt = map[i+1].br_blockcount; | |
1200 | rablkno = map[i+1].br_startblock; | |
1201 | while (rablkcnt--) { | |
1a1a3e97 | 1202 | xfs_buf_readahead(mp->m_ddev_targp, |
1da177e4 | 1203 | XFS_FSB_TO_DADDR(mp, rablkno), |
8a7b8a89 | 1204 | mp->m_quotainfo->qi_dqchunklen); |
1da177e4 LT |
1205 | rablkno++; |
1206 | } | |
1207 | } | |
1208 | /* | |
1209 | * Iterate thru all the blks in the extent and | |
1210 | * reset the counters of all the dquots inside them. | |
1211 | */ | |
1212 | if ((error = xfs_qm_dqiter_bufs(mp, | |
1213 | firstid, | |
1214 | map[i].br_startblock, | |
1215 | map[i].br_blockcount, | |
1216 | flags))) { | |
1217 | break; | |
1218 | } | |
1219 | } | |
1220 | ||
1221 | if (error) | |
1222 | break; | |
1223 | } while (nmaps > 0); | |
1224 | ||
f0e2d93c | 1225 | kmem_free(map); |
1da177e4 | 1226 | |
014c2544 | 1227 | return error; |
1da177e4 LT |
1228 | } |
1229 | ||
1230 | /* | |
1231 | * Called by dqusage_adjust in doing a quotacheck. | |
52fda114 CH |
1232 | * |
1233 | * Given the inode, and a dquot id this updates both the incore dqout as well | |
1234 | * as the buffer copy. This is so that once the quotacheck is done, we can | |
1235 | * just log all the buffers, as opposed to logging numerous updates to | |
1236 | * individual dquots. | |
1da177e4 | 1237 | */ |
52fda114 | 1238 | STATIC int |
1da177e4 | 1239 | xfs_qm_quotacheck_dqadjust( |
52fda114 CH |
1240 | struct xfs_inode *ip, |
1241 | xfs_dqid_t id, | |
1242 | uint type, | |
1da177e4 LT |
1243 | xfs_qcnt_t nblks, |
1244 | xfs_qcnt_t rtblks) | |
1245 | { | |
52fda114 CH |
1246 | struct xfs_mount *mp = ip->i_mount; |
1247 | struct xfs_dquot *dqp; | |
1248 | int error; | |
1249 | ||
1250 | error = xfs_qm_dqget(mp, ip, id, type, | |
1251 | XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp); | |
1252 | if (error) { | |
1253 | /* | |
1254 | * Shouldn't be able to turn off quotas here. | |
1255 | */ | |
1256 | ASSERT(error != ESRCH); | |
1257 | ASSERT(error != ENOENT); | |
1258 | return error; | |
1259 | } | |
0b1b213f CH |
1260 | |
1261 | trace_xfs_dqadjust(dqp); | |
1262 | ||
1da177e4 LT |
1263 | /* |
1264 | * Adjust the inode count and the block count to reflect this inode's | |
1265 | * resource usage. | |
1266 | */ | |
413d57c9 | 1267 | be64_add_cpu(&dqp->q_core.d_icount, 1); |
1da177e4 LT |
1268 | dqp->q_res_icount++; |
1269 | if (nblks) { | |
413d57c9 | 1270 | be64_add_cpu(&dqp->q_core.d_bcount, nblks); |
1da177e4 LT |
1271 | dqp->q_res_bcount += nblks; |
1272 | } | |
1273 | if (rtblks) { | |
413d57c9 | 1274 | be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks); |
1da177e4 LT |
1275 | dqp->q_res_rtbcount += rtblks; |
1276 | } | |
1277 | ||
1278 | /* | |
1279 | * Set default limits, adjust timers (since we changed usages) | |
191f8488 CH |
1280 | * |
1281 | * There are no timers for the default values set in the root dquot. | |
1da177e4 | 1282 | */ |
191f8488 | 1283 | if (dqp->q_core.d_id) { |
52fda114 CH |
1284 | xfs_qm_adjust_dqlimits(mp, &dqp->q_core); |
1285 | xfs_qm_adjust_dqtimers(mp, &dqp->q_core); | |
1da177e4 LT |
1286 | } |
1287 | ||
1288 | dqp->dq_flags |= XFS_DQ_DIRTY; | |
52fda114 CH |
1289 | xfs_qm_dqput(dqp); |
1290 | return 0; | |
1da177e4 LT |
1291 | } |
1292 | ||
1293 | STATIC int | |
1294 | xfs_qm_get_rtblks( | |
1295 | xfs_inode_t *ip, | |
1296 | xfs_qcnt_t *O_rtblks) | |
1297 | { | |
1298 | xfs_filblks_t rtblks; /* total rt blks */ | |
4eea22f0 | 1299 | xfs_extnum_t idx; /* extent record index */ |
1da177e4 LT |
1300 | xfs_ifork_t *ifp; /* inode fork pointer */ |
1301 | xfs_extnum_t nextents; /* number of extent entries */ | |
1da177e4 LT |
1302 | int error; |
1303 | ||
1304 | ASSERT(XFS_IS_REALTIME_INODE(ip)); | |
1305 | ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); | |
1306 | if (!(ifp->if_flags & XFS_IFEXTENTS)) { | |
1307 | if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK))) | |
014c2544 | 1308 | return error; |
1da177e4 LT |
1309 | } |
1310 | rtblks = 0; | |
4eea22f0 | 1311 | nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); |
a6f64d4a CH |
1312 | for (idx = 0; idx < nextents; idx++) |
1313 | rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx)); | |
1da177e4 | 1314 | *O_rtblks = (xfs_qcnt_t)rtblks; |
014c2544 | 1315 | return 0; |
1da177e4 LT |
1316 | } |
1317 | ||
1318 | /* | |
1319 | * callback routine supplied to bulkstat(). Given an inumber, find its | |
1320 | * dquots and update them to account for resources taken by that inode. | |
1321 | */ | |
1322 | /* ARGSUSED */ | |
1323 | STATIC int | |
1324 | xfs_qm_dqusage_adjust( | |
1325 | xfs_mount_t *mp, /* mount point for filesystem */ | |
1326 | xfs_ino_t ino, /* inode number to get data for */ | |
1327 | void __user *buffer, /* not used */ | |
1328 | int ubsize, /* not used */ | |
1da177e4 | 1329 | int *ubused, /* not used */ |
1da177e4 LT |
1330 | int *res) /* result code value */ |
1331 | { | |
1332 | xfs_inode_t *ip; | |
52fda114 | 1333 | xfs_qcnt_t nblks, rtblks = 0; |
1da177e4 LT |
1334 | int error; |
1335 | ||
1336 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
1337 | ||
1338 | /* | |
1339 | * rootino must have its resources accounted for, not so with the quota | |
1340 | * inodes. | |
1341 | */ | |
1342 | if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) { | |
1343 | *res = BULKSTAT_RV_NOTHING; | |
1344 | return XFS_ERROR(EINVAL); | |
1345 | } | |
1346 | ||
1347 | /* | |
1348 | * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget | |
1349 | * interface expects the inode to be exclusively locked because that's | |
1350 | * the case in all other instances. It's OK that we do this because | |
1351 | * quotacheck is done only at mount time. | |
1352 | */ | |
52fda114 CH |
1353 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_EXCL, &ip); |
1354 | if (error) { | |
1da177e4 | 1355 | *res = BULKSTAT_RV_NOTHING; |
014c2544 | 1356 | return error; |
1da177e4 LT |
1357 | } |
1358 | ||
52fda114 | 1359 | ASSERT(ip->i_delayed_blks == 0); |
1da177e4 | 1360 | |
52fda114 | 1361 | if (XFS_IS_REALTIME_INODE(ip)) { |
1da177e4 LT |
1362 | /* |
1363 | * Walk thru the extent list and count the realtime blocks. | |
1364 | */ | |
52fda114 CH |
1365 | error = xfs_qm_get_rtblks(ip, &rtblks); |
1366 | if (error) | |
1367 | goto error0; | |
1da177e4 | 1368 | } |
1da177e4 | 1369 | |
52fda114 | 1370 | nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks; |
1da177e4 LT |
1371 | |
1372 | /* | |
1373 | * Add the (disk blocks and inode) resources occupied by this | |
1374 | * inode to its dquots. We do this adjustment in the incore dquot, | |
1375 | * and also copy the changes to its buffer. | |
1376 | * We don't care about putting these changes in a transaction | |
1377 | * envelope because if we crash in the middle of a 'quotacheck' | |
1378 | * we have to start from the beginning anyway. | |
1379 | * Once we're done, we'll log all the dquot bufs. | |
1380 | * | |
c41564b5 | 1381 | * The *QUOTA_ON checks below may look pretty racy, but quotachecks |
1da177e4 LT |
1382 | * and quotaoffs don't race. (Quotachecks happen at mount time only). |
1383 | */ | |
1384 | if (XFS_IS_UQUOTA_ON(mp)) { | |
52fda114 CH |
1385 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid, |
1386 | XFS_DQ_USER, nblks, rtblks); | |
1387 | if (error) | |
1388 | goto error0; | |
1da177e4 | 1389 | } |
52fda114 CH |
1390 | |
1391 | if (XFS_IS_GQUOTA_ON(mp)) { | |
1392 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid, | |
1393 | XFS_DQ_GROUP, nblks, rtblks); | |
1394 | if (error) | |
1395 | goto error0; | |
1da177e4 | 1396 | } |
1da177e4 | 1397 | |
52fda114 | 1398 | if (XFS_IS_PQUOTA_ON(mp)) { |
6743099c | 1399 | error = xfs_qm_quotacheck_dqadjust(ip, xfs_get_projid(ip), |
52fda114 CH |
1400 | XFS_DQ_PROJ, nblks, rtblks); |
1401 | if (error) | |
1402 | goto error0; | |
1403 | } | |
1404 | ||
1405 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1406 | IRELE(ip); | |
1da177e4 | 1407 | *res = BULKSTAT_RV_DIDONE; |
014c2544 | 1408 | return 0; |
52fda114 CH |
1409 | |
1410 | error0: | |
1411 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1412 | IRELE(ip); | |
1413 | *res = BULKSTAT_RV_GIVEUP; | |
1414 | return error; | |
1da177e4 LT |
1415 | } |
1416 | ||
1417 | /* | |
1418 | * Walk thru all the filesystem inodes and construct a consistent view | |
1419 | * of the disk quota world. If the quotacheck fails, disable quotas. | |
1420 | */ | |
1421 | int | |
1422 | xfs_qm_quotacheck( | |
1423 | xfs_mount_t *mp) | |
1424 | { | |
1425 | int done, count, error; | |
1426 | xfs_ino_t lastino; | |
1427 | size_t structsz; | |
1428 | xfs_inode_t *uip, *gip; | |
1429 | uint flags; | |
1430 | ||
1431 | count = INT_MAX; | |
1432 | structsz = 1; | |
1433 | lastino = 0; | |
1434 | flags = 0; | |
1435 | ||
8a7b8a89 | 1436 | ASSERT(mp->m_quotainfo->qi_uquotaip || mp->m_quotainfo->qi_gquotaip); |
1da177e4 LT |
1437 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1438 | ||
1439 | /* | |
1440 | * There should be no cached dquots. The (simplistic) quotacheck | |
1441 | * algorithm doesn't like that. | |
1442 | */ | |
3a25404b | 1443 | ASSERT(list_empty(&mp->m_quotainfo->qi_dqlist)); |
1da177e4 | 1444 | |
0b932ccc | 1445 | xfs_notice(mp, "Quotacheck needed: Please wait."); |
1da177e4 LT |
1446 | |
1447 | /* | |
c8ad20ff | 1448 | * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset |
1da177e4 LT |
1449 | * their counters to zero. We need a clean slate. |
1450 | * We don't log our changes till later. | |
1451 | */ | |
8a7b8a89 CH |
1452 | uip = mp->m_quotainfo->qi_uquotaip; |
1453 | if (uip) { | |
1454 | error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA); | |
1455 | if (error) | |
1da177e4 LT |
1456 | goto error_return; |
1457 | flags |= XFS_UQUOTA_CHKD; | |
1458 | } | |
1459 | ||
8a7b8a89 CH |
1460 | gip = mp->m_quotainfo->qi_gquotaip; |
1461 | if (gip) { | |
1462 | error = xfs_qm_dqiterate(mp, gip, XFS_IS_GQUOTA_ON(mp) ? | |
1463 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1464 | if (error) | |
1da177e4 | 1465 | goto error_return; |
c8ad20ff | 1466 | flags |= XFS_OQUOTA_CHKD; |
1da177e4 LT |
1467 | } |
1468 | ||
1469 | do { | |
1470 | /* | |
1471 | * Iterate thru all the inodes in the file system, | |
1472 | * adjusting the corresponding dquot counters in core. | |
1473 | */ | |
7dce11db CH |
1474 | error = xfs_bulkstat(mp, &lastino, &count, |
1475 | xfs_qm_dqusage_adjust, | |
1476 | structsz, NULL, &done); | |
1477 | if (error) | |
1da177e4 LT |
1478 | break; |
1479 | ||
7dce11db | 1480 | } while (!done); |
1da177e4 | 1481 | |
4b8879df DC |
1482 | /* |
1483 | * We've made all the changes that we need to make incore. | |
1484 | * Flush them down to disk buffers if everything was updated | |
1485 | * successfully. | |
1486 | */ | |
1487 | if (!error) | |
a7ef9bd7 | 1488 | error = xfs_qm_dqflush_all(mp); |
4b8879df | 1489 | |
1da177e4 LT |
1490 | /* |
1491 | * We can get this error if we couldn't do a dquot allocation inside | |
1492 | * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the | |
1493 | * dirty dquots that might be cached, we just want to get rid of them | |
1494 | * and turn quotaoff. The dquots won't be attached to any of the inodes | |
1495 | * at this point (because we intentionally didn't in dqget_noattach). | |
1496 | */ | |
1497 | if (error) { | |
8112e9dc | 1498 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 LT |
1499 | goto error_return; |
1500 | } | |
1da177e4 LT |
1501 | |
1502 | /* | |
1503 | * We didn't log anything, because if we crashed, we'll have to | |
1504 | * start the quotacheck from scratch anyway. However, we must make | |
1505 | * sure that our dquot changes are secure before we put the | |
1506 | * quotacheck'd stamp on the superblock. So, here we do a synchronous | |
1507 | * flush. | |
1508 | */ | |
a9add83e | 1509 | xfs_flush_buftarg(mp->m_ddev_targp, 1); |
1da177e4 LT |
1510 | |
1511 | /* | |
1512 | * If one type of quotas is off, then it will lose its | |
1513 | * quotachecked status, since we won't be doing accounting for | |
1514 | * that type anymore. | |
1515 | */ | |
c8ad20ff | 1516 | mp->m_qflags &= ~(XFS_OQUOTA_CHKD | XFS_UQUOTA_CHKD); |
1da177e4 LT |
1517 | mp->m_qflags |= flags; |
1518 | ||
1da177e4 LT |
1519 | error_return: |
1520 | if (error) { | |
0b932ccc DC |
1521 | xfs_warn(mp, |
1522 | "Quotacheck: Unsuccessful (Error %d): Disabling quotas.", | |
1523 | error); | |
1da177e4 LT |
1524 | /* |
1525 | * We must turn off quotas. | |
1526 | */ | |
1527 | ASSERT(mp->m_quotainfo != NULL); | |
1528 | ASSERT(xfs_Gqm != NULL); | |
1529 | xfs_qm_destroy_quotainfo(mp); | |
31d5577b | 1530 | if (xfs_mount_reset_sbqflags(mp)) { |
0b932ccc DC |
1531 | xfs_warn(mp, |
1532 | "Quotacheck: Failed to reset quota flags."); | |
31d5577b | 1533 | } |
0b932ccc DC |
1534 | } else |
1535 | xfs_notice(mp, "Quotacheck: Done."); | |
1da177e4 LT |
1536 | return (error); |
1537 | } | |
1538 | ||
1539 | /* | |
1540 | * This is called after the superblock has been read in and we're ready to | |
1541 | * iget the quota inodes. | |
1542 | */ | |
1543 | STATIC int | |
1544 | xfs_qm_init_quotainos( | |
1545 | xfs_mount_t *mp) | |
1546 | { | |
1547 | xfs_inode_t *uip, *gip; | |
1548 | int error; | |
1549 | __int64_t sbflags; | |
1550 | uint flags; | |
1551 | ||
1552 | ASSERT(mp->m_quotainfo); | |
1553 | uip = gip = NULL; | |
1554 | sbflags = 0; | |
1555 | flags = 0; | |
1556 | ||
1557 | /* | |
1558 | * Get the uquota and gquota inodes | |
1559 | */ | |
62118709 | 1560 | if (xfs_sb_version_hasquota(&mp->m_sb)) { |
1da177e4 LT |
1561 | if (XFS_IS_UQUOTA_ON(mp) && |
1562 | mp->m_sb.sb_uquotino != NULLFSINO) { | |
1563 | ASSERT(mp->m_sb.sb_uquotino > 0); | |
1564 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, | |
7b6259e7 | 1565 | 0, 0, &uip))) |
1da177e4 LT |
1566 | return XFS_ERROR(error); |
1567 | } | |
c8ad20ff | 1568 | if (XFS_IS_OQUOTA_ON(mp) && |
1da177e4 LT |
1569 | mp->m_sb.sb_gquotino != NULLFSINO) { |
1570 | ASSERT(mp->m_sb.sb_gquotino > 0); | |
1571 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, | |
7b6259e7 | 1572 | 0, 0, &gip))) { |
1da177e4 | 1573 | if (uip) |
43355099 | 1574 | IRELE(uip); |
1da177e4 LT |
1575 | return XFS_ERROR(error); |
1576 | } | |
1577 | } | |
1578 | } else { | |
1579 | flags |= XFS_QMOPT_SBVERSION; | |
1580 | sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1581 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS); | |
1582 | } | |
1583 | ||
1584 | /* | |
1585 | * Create the two inodes, if they don't exist already. The changes | |
1586 | * made above will get added to a transaction and logged in one of | |
1587 | * the qino_alloc calls below. If the device is readonly, | |
1588 | * temporarily switch to read-write to do this. | |
1589 | */ | |
1590 | if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { | |
1591 | if ((error = xfs_qm_qino_alloc(mp, &uip, | |
1592 | sbflags | XFS_SB_UQUOTINO, | |
1593 | flags | XFS_QMOPT_UQUOTA))) | |
1594 | return XFS_ERROR(error); | |
1595 | ||
1596 | flags &= ~XFS_QMOPT_SBVERSION; | |
1597 | } | |
c8ad20ff NS |
1598 | if (XFS_IS_OQUOTA_ON(mp) && gip == NULL) { |
1599 | flags |= (XFS_IS_GQUOTA_ON(mp) ? | |
1600 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1601 | error = xfs_qm_qino_alloc(mp, &gip, | |
1602 | sbflags | XFS_SB_GQUOTINO, flags); | |
1603 | if (error) { | |
1da177e4 | 1604 | if (uip) |
43355099 | 1605 | IRELE(uip); |
1da177e4 LT |
1606 | |
1607 | return XFS_ERROR(error); | |
1608 | } | |
1609 | } | |
1610 | ||
8a7b8a89 CH |
1611 | mp->m_quotainfo->qi_uquotaip = uip; |
1612 | mp->m_quotainfo->qi_gquotaip = gip; | |
1da177e4 | 1613 | |
014c2544 | 1614 | return 0; |
1da177e4 LT |
1615 | } |
1616 | ||
1617 | ||
368e1361 | 1618 | |
1da177e4 | 1619 | /* |
92678554 | 1620 | * Pop the least recently used dquot off the freelist and recycle it. |
1da177e4 | 1621 | */ |
92678554 | 1622 | STATIC struct xfs_dquot * |
368e1361 | 1623 | xfs_qm_dqreclaim_one(void) |
1da177e4 | 1624 | { |
92678554 CH |
1625 | struct xfs_dquot *dqp; |
1626 | int restarts = 0; | |
1da177e4 | 1627 | |
3a8406f6 | 1628 | mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); |
92678554 | 1629 | restart: |
3a8406f6 | 1630 | list_for_each_entry(dqp, &xfs_Gqm->qm_dqfrlist, q_freelist) { |
3a25404b | 1631 | struct xfs_mount *mp = dqp->q_mount; |
bf72de31 CH |
1632 | |
1633 | if (!xfs_dqlock_nowait(dqp)) | |
1634 | continue; | |
1da177e4 LT |
1635 | |
1636 | /* | |
be7ffc38 CH |
1637 | * This dquot has already been grabbed by dqlookup. |
1638 | * Remove it from the freelist and try again. | |
1da177e4 | 1639 | */ |
be7ffc38 | 1640 | if (dqp->q_nrefs) { |
368e1361 | 1641 | trace_xfs_dqreclaim_want(dqp); |
1da177e4 | 1642 | XQM_STATS_INC(xqmstats.xs_qm_dqwants); |
be7ffc38 CH |
1643 | |
1644 | list_del_init(&dqp->q_freelist); | |
1645 | xfs_Gqm->qm_dqfrlist_cnt--; | |
0fbca4d1 | 1646 | restarts++; |
0fbca4d1 | 1647 | goto dqunlock; |
1da177e4 LT |
1648 | } |
1649 | ||
368e1361 | 1650 | ASSERT(dqp->q_hash); |
3a25404b | 1651 | ASSERT(!list_empty(&dqp->q_mplist)); |
368e1361 | 1652 | |
1da177e4 | 1653 | /* |
0fbca4d1 DC |
1654 | * Try to grab the flush lock. If this dquot is in the process |
1655 | * of getting flushed to disk, we don't want to reclaim it. | |
1da177e4 | 1656 | */ |
0fbca4d1 DC |
1657 | if (!xfs_dqflock_nowait(dqp)) |
1658 | goto dqunlock; | |
1da177e4 LT |
1659 | |
1660 | /* | |
1661 | * We have the flush lock so we know that this is not in the | |
1662 | * process of being flushed. So, if this is dirty, flush it | |
1663 | * DELWRI so that we don't get a freelist infested with | |
1664 | * dirty dquots. | |
1665 | */ | |
1666 | if (XFS_DQ_IS_DIRTY(dqp)) { | |
3c56836f | 1667 | int error; |
0b1b213f | 1668 | |
368e1361 | 1669 | trace_xfs_dqreclaim_dirty(dqp); |
0b1b213f | 1670 | |
1da177e4 LT |
1671 | /* |
1672 | * We flush it delayed write, so don't bother | |
368e1361 | 1673 | * releasing the freelist lock. |
1da177e4 | 1674 | */ |
fdedf28b | 1675 | error = xfs_qm_dqflush(dqp, SYNC_TRYLOCK); |
3c56836f | 1676 | if (error) { |
53487786 DC |
1677 | xfs_warn(mp, "%s: dquot %p flush failed", |
1678 | __func__, dqp); | |
3c56836f | 1679 | } |
0fbca4d1 | 1680 | goto dqunlock; |
1da177e4 | 1681 | } |
92678554 | 1682 | xfs_dqfunlock(dqp); |
368e1361 | 1683 | |
1da177e4 | 1684 | /* |
92678554 CH |
1685 | * Prevent lookup now that we are going to reclaim the dquot. |
1686 | * Once XFS_DQ_FREEING is set lookup won't touch the dquot, | |
1687 | * thus we can drop the lock now. | |
1da177e4 | 1688 | */ |
92678554 CH |
1689 | dqp->dq_flags |= XFS_DQ_FREEING; |
1690 | xfs_dqunlock(dqp); | |
368e1361 | 1691 | |
92678554 CH |
1692 | mutex_lock(&dqp->q_hash->qh_lock); |
1693 | list_del_init(&dqp->q_hashlist); | |
1694 | dqp->q_hash->qh_version++; | |
1695 | mutex_unlock(&dqp->q_hash->qh_lock); | |
0b1b213f | 1696 | |
92678554 | 1697 | mutex_lock(&mp->m_quotainfo->qi_dqlist_lock); |
3a25404b DC |
1698 | list_del_init(&dqp->q_mplist); |
1699 | mp->m_quotainfo->qi_dquots--; | |
1700 | mp->m_quotainfo->qi_dqreclaims++; | |
92678554 CH |
1701 | mutex_unlock(&mp->m_quotainfo->qi_dqlist_lock); |
1702 | ||
1703 | ASSERT(dqp->q_nrefs == 0); | |
3a8406f6 DC |
1704 | list_del_init(&dqp->q_freelist); |
1705 | xfs_Gqm->qm_dqfrlist_cnt--; | |
92678554 CH |
1706 | |
1707 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); | |
1708 | return dqp; | |
0fbca4d1 | 1709 | dqunlock: |
1da177e4 | 1710 | xfs_dqunlock(dqp); |
368e1361 | 1711 | if (restarts >= XFS_QM_RECLAIM_MAX_RESTARTS) |
0fbca4d1 | 1712 | break; |
92678554 | 1713 | goto restart; |
1da177e4 | 1714 | } |
92678554 | 1715 | |
3a8406f6 | 1716 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
92678554 | 1717 | return NULL; |
1da177e4 LT |
1718 | } |
1719 | ||
368e1361 DC |
1720 | /* |
1721 | * Traverse the freelist of dquots and attempt to reclaim a maximum of | |
1722 | * 'howmany' dquots. This operation races with dqlookup(), and attempts to | |
1723 | * favor the lookup function ... | |
1724 | */ | |
1725 | STATIC int | |
1726 | xfs_qm_shake_freelist( | |
1727 | int howmany) | |
1728 | { | |
1729 | int nreclaimed = 0; | |
1730 | xfs_dquot_t *dqp; | |
1731 | ||
1732 | if (howmany <= 0) | |
1733 | return 0; | |
1734 | ||
1735 | while (nreclaimed < howmany) { | |
1736 | dqp = xfs_qm_dqreclaim_one(); | |
1737 | if (!dqp) | |
1738 | return nreclaimed; | |
1739 | xfs_qm_dqdestroy(dqp); | |
1740 | nreclaimed++; | |
1741 | } | |
1742 | return nreclaimed; | |
1743 | } | |
1da177e4 LT |
1744 | |
1745 | /* | |
1746 | * The kmem_shake interface is invoked when memory is running low. | |
1747 | */ | |
1748 | /* ARGSUSED */ | |
1749 | STATIC int | |
7f8275d0 DC |
1750 | xfs_qm_shake( |
1751 | struct shrinker *shrink, | |
1495f230 | 1752 | struct shrink_control *sc) |
1da177e4 LT |
1753 | { |
1754 | int ndqused, nfree, n; | |
1495f230 | 1755 | gfp_t gfp_mask = sc->gfp_mask; |
1da177e4 LT |
1756 | |
1757 | if (!kmem_shake_allow(gfp_mask)) | |
014c2544 | 1758 | return 0; |
1da177e4 | 1759 | if (!xfs_Gqm) |
014c2544 | 1760 | return 0; |
1da177e4 | 1761 | |
3a8406f6 | 1762 | nfree = xfs_Gqm->qm_dqfrlist_cnt; /* free dquots */ |
1da177e4 LT |
1763 | /* incore dquots in all f/s's */ |
1764 | ndqused = atomic_read(&xfs_Gqm->qm_totaldquots) - nfree; | |
1765 | ||
1766 | ASSERT(ndqused >= 0); | |
1767 | ||
1768 | if (nfree <= ndqused && nfree < ndquot) | |
014c2544 | 1769 | return 0; |
1da177e4 LT |
1770 | |
1771 | ndqused *= xfs_Gqm->qm_dqfree_ratio; /* target # of free dquots */ | |
1772 | n = nfree - ndqused - ndquot; /* # over target */ | |
1773 | ||
1774 | return xfs_qm_shake_freelist(MAX(nfree, n)); | |
1775 | } | |
1776 | ||
1777 | ||
1da177e4 LT |
1778 | /*------------------------------------------------------------------*/ |
1779 | ||
1780 | /* | |
1781 | * Return a new incore dquot. Depending on the number of | |
1782 | * dquots in the system, we either allocate a new one on the kernel heap, | |
1783 | * or reclaim a free one. | |
1784 | * Return value is B_TRUE if we allocated a new dquot, B_FALSE if we managed | |
1785 | * to reclaim an existing one from the freelist. | |
1786 | */ | |
1787 | boolean_t | |
1788 | xfs_qm_dqalloc_incore( | |
1789 | xfs_dquot_t **O_dqpp) | |
1790 | { | |
1791 | xfs_dquot_t *dqp; | |
1792 | ||
1793 | /* | |
1794 | * Check against high water mark to see if we want to pop | |
1795 | * a nincompoop dquot off the freelist. | |
1796 | */ | |
1797 | if (atomic_read(&xfs_Gqm->qm_totaldquots) >= ndquot) { | |
1798 | /* | |
1799 | * Try to recycle a dquot from the freelist. | |
1800 | */ | |
1801 | if ((dqp = xfs_qm_dqreclaim_one())) { | |
1802 | XQM_STATS_INC(xqmstats.xs_qm_dqreclaims); | |
1803 | /* | |
1804 | * Just zero the core here. The rest will get | |
1805 | * reinitialized by caller. XXX we shouldn't even | |
1806 | * do this zero ... | |
1807 | */ | |
1808 | memset(&dqp->q_core, 0, sizeof(dqp->q_core)); | |
1809 | *O_dqpp = dqp; | |
014c2544 | 1810 | return B_FALSE; |
1da177e4 LT |
1811 | } |
1812 | XQM_STATS_INC(xqmstats.xs_qm_dqreclaim_misses); | |
1813 | } | |
1814 | ||
1815 | /* | |
1816 | * Allocate a brand new dquot on the kernel heap and return it | |
1817 | * to the caller to initialize. | |
1818 | */ | |
1819 | ASSERT(xfs_Gqm->qm_dqzone != NULL); | |
1820 | *O_dqpp = kmem_zone_zalloc(xfs_Gqm->qm_dqzone, KM_SLEEP); | |
1821 | atomic_inc(&xfs_Gqm->qm_totaldquots); | |
1822 | ||
014c2544 | 1823 | return B_TRUE; |
1da177e4 LT |
1824 | } |
1825 | ||
1826 | ||
1827 | /* | |
1828 | * Start a transaction and write the incore superblock changes to | |
1829 | * disk. flags parameter indicates which fields have changed. | |
1830 | */ | |
1831 | int | |
1832 | xfs_qm_write_sb_changes( | |
1833 | xfs_mount_t *mp, | |
1834 | __int64_t flags) | |
1835 | { | |
1836 | xfs_trans_t *tp; | |
1837 | int error; | |
1838 | ||
1da177e4 LT |
1839 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); |
1840 | if ((error = xfs_trans_reserve(tp, 0, | |
1841 | mp->m_sb.sb_sectsize + 128, 0, | |
1842 | 0, | |
1843 | XFS_DEFAULT_LOG_COUNT))) { | |
1844 | xfs_trans_cancel(tp, 0); | |
014c2544 | 1845 | return error; |
1da177e4 LT |
1846 | } |
1847 | ||
1848 | xfs_mod_sb(tp, flags); | |
e5720eec | 1849 | error = xfs_trans_commit(tp, 0); |
1da177e4 | 1850 | |
e5720eec | 1851 | return error; |
1da177e4 LT |
1852 | } |
1853 | ||
1854 | ||
1855 | /* --------------- utility functions for vnodeops ---------------- */ | |
1856 | ||
1857 | ||
1858 | /* | |
6c77b0ea | 1859 | * Given an inode, a uid, gid and prid make sure that we have |
1da177e4 LT |
1860 | * allocated relevant dquot(s) on disk, and that we won't exceed inode |
1861 | * quotas by creating this file. | |
1862 | * This also attaches dquot(s) to the given inode after locking it, | |
1863 | * and returns the dquots corresponding to the uid and/or gid. | |
1864 | * | |
1865 | * in : inode (unlocked) | |
1866 | * out : udquot, gdquot with references taken and unlocked | |
1867 | */ | |
1868 | int | |
1869 | xfs_qm_vop_dqalloc( | |
7d095257 CH |
1870 | struct xfs_inode *ip, |
1871 | uid_t uid, | |
1872 | gid_t gid, | |
1873 | prid_t prid, | |
1874 | uint flags, | |
1875 | struct xfs_dquot **O_udqpp, | |
1876 | struct xfs_dquot **O_gdqpp) | |
1da177e4 | 1877 | { |
7d095257 CH |
1878 | struct xfs_mount *mp = ip->i_mount; |
1879 | struct xfs_dquot *uq, *gq; | |
1880 | int error; | |
1881 | uint lockflags; | |
1da177e4 | 1882 | |
7d095257 | 1883 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
1da177e4 LT |
1884 | return 0; |
1885 | ||
1886 | lockflags = XFS_ILOCK_EXCL; | |
1887 | xfs_ilock(ip, lockflags); | |
1888 | ||
bd186aa9 | 1889 | if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) |
1da177e4 LT |
1890 | gid = ip->i_d.di_gid; |
1891 | ||
1892 | /* | |
1893 | * Attach the dquot(s) to this inode, doing a dquot allocation | |
1894 | * if necessary. The dquot(s) will not be locked. | |
1895 | */ | |
1896 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
7d095257 CH |
1897 | error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC); |
1898 | if (error) { | |
1da177e4 | 1899 | xfs_iunlock(ip, lockflags); |
014c2544 | 1900 | return error; |
1da177e4 LT |
1901 | } |
1902 | } | |
1903 | ||
1904 | uq = gq = NULL; | |
c8ad20ff | 1905 | if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { |
1da177e4 LT |
1906 | if (ip->i_d.di_uid != uid) { |
1907 | /* | |
1908 | * What we need is the dquot that has this uid, and | |
1909 | * if we send the inode to dqget, the uid of the inode | |
1910 | * takes priority over what's sent in the uid argument. | |
1911 | * We must unlock inode here before calling dqget if | |
1912 | * we're not sending the inode, because otherwise | |
1913 | * we'll deadlock by doing trans_reserve while | |
1914 | * holding ilock. | |
1915 | */ | |
1916 | xfs_iunlock(ip, lockflags); | |
1917 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t) uid, | |
1918 | XFS_DQ_USER, | |
1919 | XFS_QMOPT_DQALLOC | | |
1920 | XFS_QMOPT_DOWARN, | |
1921 | &uq))) { | |
1922 | ASSERT(error != ENOENT); | |
014c2544 | 1923 | return error; |
1da177e4 LT |
1924 | } |
1925 | /* | |
1926 | * Get the ilock in the right order. | |
1927 | */ | |
1928 | xfs_dqunlock(uq); | |
1929 | lockflags = XFS_ILOCK_SHARED; | |
1930 | xfs_ilock(ip, lockflags); | |
1931 | } else { | |
1932 | /* | |
1933 | * Take an extra reference, because we'll return | |
1934 | * this to caller | |
1935 | */ | |
1936 | ASSERT(ip->i_udquot); | |
78e55892 | 1937 | uq = xfs_qm_dqhold(ip->i_udquot); |
1da177e4 LT |
1938 | } |
1939 | } | |
c8ad20ff | 1940 | if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { |
1da177e4 LT |
1941 | if (ip->i_d.di_gid != gid) { |
1942 | xfs_iunlock(ip, lockflags); | |
1943 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)gid, | |
1944 | XFS_DQ_GROUP, | |
1945 | XFS_QMOPT_DQALLOC | | |
1946 | XFS_QMOPT_DOWARN, | |
1947 | &gq))) { | |
1948 | if (uq) | |
1949 | xfs_qm_dqrele(uq); | |
1950 | ASSERT(error != ENOENT); | |
014c2544 | 1951 | return error; |
1da177e4 LT |
1952 | } |
1953 | xfs_dqunlock(gq); | |
1954 | lockflags = XFS_ILOCK_SHARED; | |
1955 | xfs_ilock(ip, lockflags); | |
1956 | } else { | |
1957 | ASSERT(ip->i_gdquot); | |
78e55892 | 1958 | gq = xfs_qm_dqhold(ip->i_gdquot); |
1da177e4 | 1959 | } |
c8ad20ff | 1960 | } else if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { |
6743099c | 1961 | if (xfs_get_projid(ip) != prid) { |
c8ad20ff NS |
1962 | xfs_iunlock(ip, lockflags); |
1963 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, | |
1964 | XFS_DQ_PROJ, | |
1965 | XFS_QMOPT_DQALLOC | | |
1966 | XFS_QMOPT_DOWARN, | |
1967 | &gq))) { | |
1968 | if (uq) | |
1969 | xfs_qm_dqrele(uq); | |
1970 | ASSERT(error != ENOENT); | |
1971 | return (error); | |
1972 | } | |
1973 | xfs_dqunlock(gq); | |
1974 | lockflags = XFS_ILOCK_SHARED; | |
1975 | xfs_ilock(ip, lockflags); | |
1976 | } else { | |
1977 | ASSERT(ip->i_gdquot); | |
78e55892 | 1978 | gq = xfs_qm_dqhold(ip->i_gdquot); |
c8ad20ff | 1979 | } |
1da177e4 LT |
1980 | } |
1981 | if (uq) | |
0b1b213f | 1982 | trace_xfs_dquot_dqalloc(ip); |
1da177e4 LT |
1983 | |
1984 | xfs_iunlock(ip, lockflags); | |
1985 | if (O_udqpp) | |
1986 | *O_udqpp = uq; | |
1987 | else if (uq) | |
1988 | xfs_qm_dqrele(uq); | |
1989 | if (O_gdqpp) | |
1990 | *O_gdqpp = gq; | |
1991 | else if (gq) | |
1992 | xfs_qm_dqrele(gq); | |
014c2544 | 1993 | return 0; |
1da177e4 LT |
1994 | } |
1995 | ||
1996 | /* | |
1997 | * Actually transfer ownership, and do dquot modifications. | |
1998 | * These were already reserved. | |
1999 | */ | |
2000 | xfs_dquot_t * | |
2001 | xfs_qm_vop_chown( | |
2002 | xfs_trans_t *tp, | |
2003 | xfs_inode_t *ip, | |
2004 | xfs_dquot_t **IO_olddq, | |
2005 | xfs_dquot_t *newdq) | |
2006 | { | |
2007 | xfs_dquot_t *prevdq; | |
06d10dd9 NS |
2008 | uint bfield = XFS_IS_REALTIME_INODE(ip) ? |
2009 | XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; | |
2010 | ||
7d095257 | 2011 | |
579aa9ca | 2012 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
2013 | ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); |
2014 | ||
2015 | /* old dquot */ | |
2016 | prevdq = *IO_olddq; | |
2017 | ASSERT(prevdq); | |
2018 | ASSERT(prevdq != newdq); | |
2019 | ||
06d10dd9 NS |
2020 | xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks)); |
2021 | xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); | |
1da177e4 LT |
2022 | |
2023 | /* the sparkling new dquot */ | |
06d10dd9 NS |
2024 | xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks); |
2025 | xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); | |
1da177e4 LT |
2026 | |
2027 | /* | |
78e55892 CH |
2028 | * Take an extra reference, because the inode is going to keep |
2029 | * this dquot pointer even after the trans_commit. | |
1da177e4 | 2030 | */ |
78e55892 | 2031 | *IO_olddq = xfs_qm_dqhold(newdq); |
1da177e4 | 2032 | |
014c2544 | 2033 | return prevdq; |
1da177e4 LT |
2034 | } |
2035 | ||
2036 | /* | |
c8ad20ff | 2037 | * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID). |
1da177e4 LT |
2038 | */ |
2039 | int | |
2040 | xfs_qm_vop_chown_reserve( | |
2041 | xfs_trans_t *tp, | |
2042 | xfs_inode_t *ip, | |
2043 | xfs_dquot_t *udqp, | |
2044 | xfs_dquot_t *gdqp, | |
2045 | uint flags) | |
2046 | { | |
7d095257 | 2047 | xfs_mount_t *mp = ip->i_mount; |
9a2a7de2 | 2048 | uint delblks, blkflags, prjflags = 0; |
1da177e4 | 2049 | xfs_dquot_t *unresudq, *unresgdq, *delblksudq, *delblksgdq; |
7d095257 CH |
2050 | int error; |
2051 | ||
1da177e4 | 2052 | |
579aa9ca | 2053 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); |
1da177e4 LT |
2054 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
2055 | ||
2056 | delblks = ip->i_delayed_blks; | |
2057 | delblksudq = delblksgdq = unresudq = unresgdq = NULL; | |
06d10dd9 NS |
2058 | blkflags = XFS_IS_REALTIME_INODE(ip) ? |
2059 | XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS; | |
1da177e4 LT |
2060 | |
2061 | if (XFS_IS_UQUOTA_ON(mp) && udqp && | |
1149d96a | 2062 | ip->i_d.di_uid != (uid_t)be32_to_cpu(udqp->q_core.d_id)) { |
1da177e4 LT |
2063 | delblksudq = udqp; |
2064 | /* | |
2065 | * If there are delayed allocation blocks, then we have to | |
2066 | * unreserve those from the old dquot, and add them to the | |
2067 | * new dquot. | |
2068 | */ | |
2069 | if (delblks) { | |
2070 | ASSERT(ip->i_udquot); | |
2071 | unresudq = ip->i_udquot; | |
2072 | } | |
2073 | } | |
c8ad20ff | 2074 | if (XFS_IS_OQUOTA_ON(ip->i_mount) && gdqp) { |
9a2a7de2 | 2075 | if (XFS_IS_PQUOTA_ON(ip->i_mount) && |
6743099c | 2076 | xfs_get_projid(ip) != be32_to_cpu(gdqp->q_core.d_id)) |
9a2a7de2 NS |
2077 | prjflags = XFS_QMOPT_ENOSPC; |
2078 | ||
2079 | if (prjflags || | |
2080 | (XFS_IS_GQUOTA_ON(ip->i_mount) && | |
2081 | ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id))) { | |
c8ad20ff NS |
2082 | delblksgdq = gdqp; |
2083 | if (delblks) { | |
2084 | ASSERT(ip->i_gdquot); | |
2085 | unresgdq = ip->i_gdquot; | |
2086 | } | |
1da177e4 LT |
2087 | } |
2088 | } | |
2089 | ||
2090 | if ((error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, | |
2091 | delblksudq, delblksgdq, ip->i_d.di_nblocks, 1, | |
9a2a7de2 | 2092 | flags | blkflags | prjflags))) |
1da177e4 LT |
2093 | return (error); |
2094 | ||
2095 | /* | |
2096 | * Do the delayed blks reservations/unreservations now. Since, these | |
2097 | * are done without the help of a transaction, if a reservation fails | |
2098 | * its previous reservations won't be automatically undone by trans | |
2099 | * code. So, we have to do it manually here. | |
2100 | */ | |
2101 | if (delblks) { | |
2102 | /* | |
2103 | * Do the reservations first. Unreservation can't fail. | |
2104 | */ | |
2105 | ASSERT(delblksudq || delblksgdq); | |
2106 | ASSERT(unresudq || unresgdq); | |
2107 | if ((error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
2108 | delblksudq, delblksgdq, (xfs_qcnt_t)delblks, 0, | |
9a2a7de2 | 2109 | flags | blkflags | prjflags))) |
1da177e4 LT |
2110 | return (error); |
2111 | xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
2112 | unresudq, unresgdq, -((xfs_qcnt_t)delblks), 0, | |
06d10dd9 | 2113 | blkflags); |
1da177e4 LT |
2114 | } |
2115 | ||
2116 | return (0); | |
2117 | } | |
2118 | ||
2119 | int | |
2120 | xfs_qm_vop_rename_dqattach( | |
7d095257 | 2121 | struct xfs_inode **i_tab) |
1da177e4 | 2122 | { |
7d095257 CH |
2123 | struct xfs_mount *mp = i_tab[0]->i_mount; |
2124 | int i; | |
1da177e4 | 2125 | |
7d095257 | 2126 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
014c2544 | 2127 | return 0; |
1da177e4 | 2128 | |
7d095257 CH |
2129 | for (i = 0; (i < 4 && i_tab[i]); i++) { |
2130 | struct xfs_inode *ip = i_tab[i]; | |
2131 | int error; | |
2132 | ||
1da177e4 LT |
2133 | /* |
2134 | * Watch out for duplicate entries in the table. | |
2135 | */ | |
7d095257 CH |
2136 | if (i == 0 || ip != i_tab[i-1]) { |
2137 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
1da177e4 LT |
2138 | error = xfs_qm_dqattach(ip, 0); |
2139 | if (error) | |
014c2544 | 2140 | return error; |
1da177e4 LT |
2141 | } |
2142 | } | |
2143 | } | |
014c2544 | 2144 | return 0; |
1da177e4 LT |
2145 | } |
2146 | ||
2147 | void | |
7d095257 CH |
2148 | xfs_qm_vop_create_dqattach( |
2149 | struct xfs_trans *tp, | |
2150 | struct xfs_inode *ip, | |
2151 | struct xfs_dquot *udqp, | |
2152 | struct xfs_dquot *gdqp) | |
1da177e4 | 2153 | { |
7d095257 CH |
2154 | struct xfs_mount *mp = tp->t_mountp; |
2155 | ||
2156 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) | |
1da177e4 LT |
2157 | return; |
2158 | ||
579aa9ca | 2159 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
7d095257 | 2160 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1da177e4 LT |
2161 | |
2162 | if (udqp) { | |
1da177e4 | 2163 | ASSERT(ip->i_udquot == NULL); |
7d095257 | 2164 | ASSERT(XFS_IS_UQUOTA_ON(mp)); |
1149d96a | 2165 | ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id)); |
78e55892 CH |
2166 | |
2167 | ip->i_udquot = xfs_qm_dqhold(udqp); | |
1da177e4 LT |
2168 | xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); |
2169 | } | |
2170 | if (gdqp) { | |
1da177e4 | 2171 | ASSERT(ip->i_gdquot == NULL); |
7d095257 CH |
2172 | ASSERT(XFS_IS_OQUOTA_ON(mp)); |
2173 | ASSERT((XFS_IS_GQUOTA_ON(mp) ? | |
6743099c | 2174 | ip->i_d.di_gid : xfs_get_projid(ip)) == |
ee2a4f7c | 2175 | be32_to_cpu(gdqp->q_core.d_id)); |
78e55892 CH |
2176 | |
2177 | ip->i_gdquot = xfs_qm_dqhold(gdqp); | |
1da177e4 LT |
2178 | xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); |
2179 | } | |
2180 | } | |
2181 |