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; | |
1da177e4 LT |
452 | |
453 | again: | |
8a7b8a89 CH |
454 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
455 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 | 456 | xfs_dqlock(dqp); |
92678554 CH |
457 | if (dqp->dq_flags & XFS_DQ_FREEING) { |
458 | xfs_dqunlock(dqp); | |
459 | mutex_unlock(&q->qi_dqlist_lock); | |
460 | delay(1); | |
461 | mutex_lock(&q->qi_dqlist_lock); | |
462 | goto again; | |
463 | } | |
28fb588c CH |
464 | |
465 | gdqp = dqp->q_gdquot; | |
466 | if (gdqp) | |
1da177e4 | 467 | dqp->q_gdquot = NULL; |
1da177e4 LT |
468 | xfs_dqunlock(dqp); |
469 | ||
28fb588c CH |
470 | if (gdqp) |
471 | xfs_qm_dqrele(gdqp); | |
1da177e4 LT |
472 | } |
473 | } | |
474 | ||
475 | /* | |
476 | * Go through all the incore dquots of this file system and take them | |
477 | * off the mplist and hashlist, if the dquot type matches the dqtype | |
478 | * parameter. This is used when turning off quota accounting for | |
479 | * users and/or groups, as well as when the filesystem is unmounting. | |
480 | */ | |
481 | STATIC int | |
482 | xfs_qm_dqpurge_int( | |
8a7b8a89 CH |
483 | struct xfs_mount *mp, |
484 | uint flags) | |
1da177e4 | 485 | { |
8a7b8a89 CH |
486 | struct xfs_quotainfo *q = mp->m_quotainfo; |
487 | struct xfs_dquot *dqp, *n; | |
488 | uint dqtype; | |
92678554 CH |
489 | int nmisses = 0; |
490 | LIST_HEAD (dispose_list); | |
1da177e4 | 491 | |
8a7b8a89 | 492 | if (!q) |
014c2544 | 493 | return 0; |
1da177e4 LT |
494 | |
495 | dqtype = (flags & XFS_QMOPT_UQUOTA) ? XFS_DQ_USER : 0; | |
c8ad20ff | 496 | dqtype |= (flags & XFS_QMOPT_PQUOTA) ? XFS_DQ_PROJ : 0; |
1da177e4 LT |
497 | dqtype |= (flags & XFS_QMOPT_GQUOTA) ? XFS_DQ_GROUP : 0; |
498 | ||
8a7b8a89 | 499 | mutex_lock(&q->qi_dqlist_lock); |
1da177e4 LT |
500 | |
501 | /* | |
502 | * In the first pass through all incore dquots of this filesystem, | |
503 | * we release the group dquot pointers the user dquots may be | |
504 | * carrying around as a hint. We need to do this irrespective of | |
505 | * what's being turned off. | |
506 | */ | |
507 | xfs_qm_detach_gdquots(mp); | |
508 | ||
1da177e4 | 509 | /* |
92678554 | 510 | * Try to get rid of all of the unwanted dquots. |
1da177e4 | 511 | */ |
8a7b8a89 | 512 | list_for_each_entry_safe(dqp, n, &q->qi_dqlist, q_mplist) { |
be7ffc38 | 513 | xfs_dqlock(dqp); |
92678554 CH |
514 | if ((dqp->dq_flags & dqtype) != 0 && |
515 | !(dqp->dq_flags & XFS_DQ_FREEING)) { | |
516 | if (dqp->q_nrefs == 0) { | |
517 | dqp->dq_flags |= XFS_DQ_FREEING; | |
518 | list_move_tail(&dqp->q_mplist, &dispose_list); | |
519 | } else | |
520 | nmisses++; | |
be7ffc38 CH |
521 | } |
522 | xfs_dqunlock(dqp); | |
1da177e4 | 523 | } |
8a7b8a89 | 524 | mutex_unlock(&q->qi_dqlist_lock); |
92678554 CH |
525 | |
526 | list_for_each_entry_safe(dqp, n, &dispose_list, q_mplist) | |
527 | xfs_qm_dqpurge(dqp); | |
528 | ||
1da177e4 LT |
529 | return nmisses; |
530 | } | |
531 | ||
532 | int | |
533 | xfs_qm_dqpurge_all( | |
534 | xfs_mount_t *mp, | |
535 | uint flags) | |
536 | { | |
537 | int ndquots; | |
538 | ||
539 | /* | |
540 | * Purge the dquot cache. | |
541 | * None of the dquots should really be busy at this point. | |
542 | */ | |
543 | if (mp->m_quotainfo) { | |
544 | while ((ndquots = xfs_qm_dqpurge_int(mp, flags))) { | |
545 | delay(ndquots * 10); | |
546 | } | |
547 | } | |
548 | return 0; | |
549 | } | |
550 | ||
551 | STATIC int | |
552 | xfs_qm_dqattach_one( | |
553 | xfs_inode_t *ip, | |
554 | xfs_dqid_t id, | |
555 | uint type, | |
556 | uint doalloc, | |
1da177e4 LT |
557 | xfs_dquot_t *udqhint, /* hint */ |
558 | xfs_dquot_t **IO_idqpp) | |
559 | { | |
560 | xfs_dquot_t *dqp; | |
561 | int error; | |
562 | ||
579aa9ca | 563 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 564 | error = 0; |
8e9b6e7f | 565 | |
1da177e4 LT |
566 | /* |
567 | * See if we already have it in the inode itself. IO_idqpp is | |
568 | * &i_udquot or &i_gdquot. This made the code look weird, but | |
569 | * made the logic a lot simpler. | |
570 | */ | |
8e9b6e7f CH |
571 | dqp = *IO_idqpp; |
572 | if (dqp) { | |
0b1b213f | 573 | trace_xfs_dqattach_found(dqp); |
8e9b6e7f | 574 | return 0; |
1da177e4 LT |
575 | } |
576 | ||
577 | /* | |
578 | * udqhint is the i_udquot field in inode, and is non-NULL only | |
c8ad20ff | 579 | * when the type arg is group/project. Its purpose is to save a |
1da177e4 LT |
580 | * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside |
581 | * the user dquot. | |
582 | */ | |
8e9b6e7f CH |
583 | if (udqhint) { |
584 | ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ); | |
1da177e4 LT |
585 | xfs_dqlock(udqhint); |
586 | ||
8e9b6e7f CH |
587 | /* |
588 | * No need to take dqlock to look at the id. | |
589 | * | |
590 | * The ID can't change until it gets reclaimed, and it won't | |
591 | * be reclaimed as long as we have a ref from inode and we | |
592 | * hold the ilock. | |
593 | */ | |
594 | dqp = udqhint->q_gdquot; | |
595 | if (dqp && be32_to_cpu(dqp->q_core.d_id) == id) { | |
8e9b6e7f | 596 | ASSERT(*IO_idqpp == NULL); |
8e9b6e7f | 597 | |
78e55892 | 598 | *IO_idqpp = xfs_qm_dqhold(dqp); |
1da177e4 | 599 | xfs_dqunlock(udqhint); |
8e9b6e7f | 600 | return 0; |
1da177e4 | 601 | } |
8e9b6e7f CH |
602 | |
603 | /* | |
604 | * We can't hold a dquot lock when we call the dqget code. | |
605 | * We'll deadlock in no time, because of (not conforming to) | |
606 | * lock ordering - the inodelock comes before any dquot lock, | |
607 | * and we may drop and reacquire the ilock in xfs_qm_dqget(). | |
608 | */ | |
1da177e4 | 609 | xfs_dqunlock(udqhint); |
8e9b6e7f CH |
610 | } |
611 | ||
1da177e4 LT |
612 | /* |
613 | * Find the dquot from somewhere. This bumps the | |
614 | * reference count of dquot and returns it locked. | |
615 | * This can return ENOENT if dquot didn't exist on | |
616 | * disk and we didn't ask it to allocate; | |
617 | * ESRCH if quotas got turned off suddenly. | |
618 | */ | |
db3e74b5 MH |
619 | error = xfs_qm_dqget(ip->i_mount, ip, id, type, |
620 | doalloc | XFS_QMOPT_DOWARN, &dqp); | |
8e9b6e7f CH |
621 | if (error) |
622 | return error; | |
1da177e4 | 623 | |
0b1b213f | 624 | trace_xfs_dqattach_get(dqp); |
8e9b6e7f | 625 | |
1da177e4 LT |
626 | /* |
627 | * dqget may have dropped and re-acquired the ilock, but it guarantees | |
628 | * that the dquot returned is the one that should go in the inode. | |
629 | */ | |
630 | *IO_idqpp = dqp; | |
8e9b6e7f CH |
631 | xfs_dqunlock(dqp); |
632 | return 0; | |
1da177e4 LT |
633 | } |
634 | ||
635 | ||
636 | /* | |
637 | * Given a udquot and gdquot, attach a ptr to the group dquot in the | |
ab680bb7 | 638 | * udquot as a hint for future lookups. |
1da177e4 LT |
639 | */ |
640 | STATIC void | |
641 | xfs_qm_dqattach_grouphint( | |
642 | xfs_dquot_t *udq, | |
8e9b6e7f | 643 | xfs_dquot_t *gdq) |
1da177e4 LT |
644 | { |
645 | xfs_dquot_t *tmp; | |
646 | ||
8e9b6e7f | 647 | xfs_dqlock(udq); |
1da177e4 | 648 | |
ab680bb7 CH |
649 | tmp = udq->q_gdquot; |
650 | if (tmp) { | |
651 | if (tmp == gdq) | |
652 | goto done; | |
1da177e4 LT |
653 | |
654 | udq->q_gdquot = NULL; | |
1da177e4 | 655 | xfs_qm_dqrele(tmp); |
1da177e4 | 656 | } |
8e9b6e7f | 657 | |
78e55892 | 658 | udq->q_gdquot = xfs_qm_dqhold(gdq); |
ab680bb7 | 659 | done: |
8e9b6e7f | 660 | xfs_dqunlock(udq); |
1da177e4 LT |
661 | } |
662 | ||
663 | ||
664 | /* | |
c8ad20ff NS |
665 | * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON |
666 | * into account. | |
1da177e4 | 667 | * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed. |
1da177e4 LT |
668 | * Inode may get unlocked and relocked in here, and the caller must deal with |
669 | * the consequences. | |
670 | */ | |
671 | int | |
7d095257 | 672 | xfs_qm_dqattach_locked( |
1da177e4 LT |
673 | xfs_inode_t *ip, |
674 | uint flags) | |
675 | { | |
676 | xfs_mount_t *mp = ip->i_mount; | |
677 | uint nquotas = 0; | |
678 | int error = 0; | |
679 | ||
7d095257 CH |
680 | if (!XFS_IS_QUOTA_RUNNING(mp) || |
681 | !XFS_IS_QUOTA_ON(mp) || | |
682 | !XFS_NOT_DQATTACHED(mp, ip) || | |
683 | ip->i_ino == mp->m_sb.sb_uquotino || | |
684 | ip->i_ino == mp->m_sb.sb_gquotino) | |
014c2544 | 685 | return 0; |
1da177e4 | 686 | |
7d095257 | 687 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
688 | |
689 | if (XFS_IS_UQUOTA_ON(mp)) { | |
690 | error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER, | |
691 | flags & XFS_QMOPT_DQALLOC, | |
1da177e4 LT |
692 | NULL, &ip->i_udquot); |
693 | if (error) | |
694 | goto done; | |
695 | nquotas++; | |
696 | } | |
579aa9ca CH |
697 | |
698 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); | |
c8ad20ff NS |
699 | if (XFS_IS_OQUOTA_ON(mp)) { |
700 | error = XFS_IS_GQUOTA_ON(mp) ? | |
701 | xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, | |
702 | flags & XFS_QMOPT_DQALLOC, | |
c8ad20ff | 703 | ip->i_udquot, &ip->i_gdquot) : |
6743099c | 704 | xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ, |
1da177e4 | 705 | flags & XFS_QMOPT_DQALLOC, |
1da177e4 LT |
706 | ip->i_udquot, &ip->i_gdquot); |
707 | /* | |
708 | * Don't worry about the udquot that we may have | |
709 | * attached above. It'll get detached, if not already. | |
710 | */ | |
711 | if (error) | |
712 | goto done; | |
713 | nquotas++; | |
714 | } | |
715 | ||
716 | /* | |
717 | * Attach this group quota to the user quota as a hint. | |
718 | * This WON'T, in general, result in a thrash. | |
719 | */ | |
720 | if (nquotas == 2) { | |
579aa9ca | 721 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
722 | ASSERT(ip->i_udquot); |
723 | ASSERT(ip->i_gdquot); | |
724 | ||
725 | /* | |
ab680bb7 CH |
726 | * We do not have i_udquot locked at this point, but this check |
727 | * is OK since we don't depend on the i_gdquot to be accurate | |
728 | * 100% all the time. It is just a hint, and this will | |
729 | * succeed in general. | |
1da177e4 | 730 | */ |
ab680bb7 CH |
731 | if (ip->i_udquot->q_gdquot != ip->i_gdquot) |
732 | xfs_qm_dqattach_grouphint(ip->i_udquot, ip->i_gdquot); | |
1da177e4 LT |
733 | } |
734 | ||
7d095257 | 735 | done: |
ea15ab3c CH |
736 | #ifdef DEBUG |
737 | if (!error) { | |
1da177e4 LT |
738 | if (XFS_IS_UQUOTA_ON(mp)) |
739 | ASSERT(ip->i_udquot); | |
c8ad20ff | 740 | if (XFS_IS_OQUOTA_ON(mp)) |
1da177e4 LT |
741 | ASSERT(ip->i_gdquot); |
742 | } | |
7d095257 | 743 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 744 | #endif |
7d095257 CH |
745 | return error; |
746 | } | |
1da177e4 | 747 | |
7d095257 CH |
748 | int |
749 | xfs_qm_dqattach( | |
750 | struct xfs_inode *ip, | |
751 | uint flags) | |
752 | { | |
753 | int error; | |
754 | ||
755 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
756 | error = xfs_qm_dqattach_locked(ip, flags); | |
757 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1da177e4 | 758 | |
014c2544 | 759 | return error; |
1da177e4 LT |
760 | } |
761 | ||
762 | /* | |
763 | * Release dquots (and their references) if any. | |
764 | * The inode should be locked EXCL except when this's called by | |
765 | * xfs_ireclaim. | |
766 | */ | |
767 | void | |
768 | xfs_qm_dqdetach( | |
769 | xfs_inode_t *ip) | |
770 | { | |
771 | if (!(ip->i_udquot || ip->i_gdquot)) | |
772 | return; | |
773 | ||
0b1b213f CH |
774 | trace_xfs_dquot_dqdetach(ip); |
775 | ||
1da177e4 LT |
776 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_uquotino); |
777 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_gquotino); | |
1da177e4 LT |
778 | if (ip->i_udquot) { |
779 | xfs_qm_dqrele(ip->i_udquot); | |
780 | ip->i_udquot = NULL; | |
781 | } | |
782 | if (ip->i_gdquot) { | |
783 | xfs_qm_dqrele(ip->i_gdquot); | |
784 | ip->i_gdquot = NULL; | |
785 | } | |
786 | } | |
787 | ||
a4edd1da CH |
788 | /* |
789 | * The hash chains and the mplist use the same xfs_dqhash structure as | |
790 | * their list head, but we can take the mplist qh_lock and one of the | |
791 | * hash qh_locks at the same time without any problem as they aren't | |
792 | * related. | |
793 | */ | |
794 | static struct lock_class_key xfs_quota_mplist_class; | |
1da177e4 LT |
795 | |
796 | /* | |
797 | * This initializes all the quota information that's kept in the | |
798 | * mount structure | |
799 | */ | |
ba0f32d4 | 800 | STATIC int |
1da177e4 LT |
801 | xfs_qm_init_quotainfo( |
802 | xfs_mount_t *mp) | |
803 | { | |
804 | xfs_quotainfo_t *qinf; | |
805 | int error; | |
806 | xfs_dquot_t *dqp; | |
807 | ||
808 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
809 | ||
810 | /* | |
811 | * Tell XQM that we exist as soon as possible. | |
812 | */ | |
813 | if ((error = xfs_qm_hold_quotafs_ref(mp))) { | |
014c2544 | 814 | return error; |
1da177e4 LT |
815 | } |
816 | ||
817 | qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP); | |
818 | ||
819 | /* | |
820 | * See if quotainodes are setup, and if not, allocate them, | |
821 | * and change the superblock accordingly. | |
822 | */ | |
823 | if ((error = xfs_qm_init_quotainos(mp))) { | |
f0e2d93c | 824 | kmem_free(qinf); |
1da177e4 | 825 | mp->m_quotainfo = NULL; |
014c2544 | 826 | return error; |
1da177e4 LT |
827 | } |
828 | ||
3a25404b DC |
829 | INIT_LIST_HEAD(&qinf->qi_dqlist); |
830 | mutex_init(&qinf->qi_dqlist_lock); | |
831 | lockdep_set_class(&qinf->qi_dqlist_lock, &xfs_quota_mplist_class); | |
a4edd1da | 832 | |
1da177e4 LT |
833 | qinf->qi_dqreclaims = 0; |
834 | ||
835 | /* mutex used to serialize quotaoffs */ | |
794ee1ba | 836 | mutex_init(&qinf->qi_quotaofflock); |
1da177e4 LT |
837 | |
838 | /* Precalc some constants */ | |
839 | qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
840 | ASSERT(qinf->qi_dqchunklen); | |
841 | qinf->qi_dqperchunk = BBTOB(qinf->qi_dqchunklen); | |
842 | do_div(qinf->qi_dqperchunk, sizeof(xfs_dqblk_t)); | |
843 | ||
844 | mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); | |
845 | ||
846 | /* | |
847 | * We try to get the limits from the superuser's limits fields. | |
848 | * This is quite hacky, but it is standard quota practice. | |
7ae44407 | 849 | * |
1da177e4 LT |
850 | * We look at the USR dquot with id == 0 first, but if user quotas |
851 | * are not enabled we goto the GRP dquot with id == 0. | |
852 | * We don't really care to keep separate default limits for user | |
853 | * and group quotas, at least not at this point. | |
7ae44407 CH |
854 | * |
855 | * Since we may not have done a quotacheck by this point, just read | |
856 | * the dquot without attaching it to any hashtables or lists. | |
1da177e4 | 857 | */ |
7ae44407 CH |
858 | error = xfs_qm_dqread(mp, 0, |
859 | XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : | |
860 | (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP : | |
861 | XFS_DQ_PROJ), | |
862 | XFS_QMOPT_DOWARN, &dqp); | |
863 | if (!error) { | |
1da177e4 LT |
864 | xfs_disk_dquot_t *ddqp = &dqp->q_core; |
865 | ||
866 | /* | |
867 | * The warnings and timers set the grace period given to | |
868 | * a user or group before he or she can not perform any | |
869 | * more writing. If it is zero, a default is used. | |
870 | */ | |
1149d96a CH |
871 | qinf->qi_btimelimit = ddqp->d_btimer ? |
872 | be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT; | |
873 | qinf->qi_itimelimit = ddqp->d_itimer ? | |
874 | be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT; | |
875 | qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ? | |
876 | be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT; | |
877 | qinf->qi_bwarnlimit = ddqp->d_bwarns ? | |
878 | be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT; | |
879 | qinf->qi_iwarnlimit = ddqp->d_iwarns ? | |
880 | be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT; | |
881 | qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ? | |
882 | be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT; | |
883 | qinf->qi_bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit); | |
884 | qinf->qi_bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit); | |
885 | qinf->qi_ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit); | |
886 | qinf->qi_isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit); | |
887 | qinf->qi_rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit); | |
888 | qinf->qi_rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit); | |
1da177e4 | 889 | |
1da177e4 LT |
890 | xfs_qm_dqdestroy(dqp); |
891 | } else { | |
892 | qinf->qi_btimelimit = XFS_QM_BTIMELIMIT; | |
893 | qinf->qi_itimelimit = XFS_QM_ITIMELIMIT; | |
894 | qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT; | |
895 | qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT; | |
896 | qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT; | |
06d10dd9 | 897 | qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT; |
1da177e4 LT |
898 | } |
899 | ||
014c2544 | 900 | return 0; |
1da177e4 LT |
901 | } |
902 | ||
903 | ||
904 | /* | |
905 | * Gets called when unmounting a filesystem or when all quotas get | |
906 | * turned off. | |
907 | * This purges the quota inodes, destroys locks and frees itself. | |
908 | */ | |
909 | void | |
910 | xfs_qm_destroy_quotainfo( | |
911 | xfs_mount_t *mp) | |
912 | { | |
913 | xfs_quotainfo_t *qi; | |
914 | ||
915 | qi = mp->m_quotainfo; | |
916 | ASSERT(qi != NULL); | |
917 | ASSERT(xfs_Gqm != NULL); | |
918 | ||
919 | /* | |
920 | * Release the reference that XQM kept, so that we know | |
921 | * when the XQM structure should be freed. We cannot assume | |
922 | * that xfs_Gqm is non-null after this point. | |
923 | */ | |
924 | xfs_qm_rele_quotafs_ref(mp); | |
925 | ||
3a25404b DC |
926 | ASSERT(list_empty(&qi->qi_dqlist)); |
927 | mutex_destroy(&qi->qi_dqlist_lock); | |
1da177e4 LT |
928 | |
929 | if (qi->qi_uquotaip) { | |
26cc0021 | 930 | IRELE(qi->qi_uquotaip); |
1da177e4 LT |
931 | qi->qi_uquotaip = NULL; /* paranoia */ |
932 | } | |
933 | if (qi->qi_gquotaip) { | |
26cc0021 | 934 | IRELE(qi->qi_gquotaip); |
1da177e4 LT |
935 | qi->qi_gquotaip = NULL; |
936 | } | |
937 | mutex_destroy(&qi->qi_quotaofflock); | |
f0e2d93c | 938 | kmem_free(qi); |
1da177e4 LT |
939 | mp->m_quotainfo = NULL; |
940 | } | |
941 | ||
942 | ||
943 | ||
944 | /* ------------------- PRIVATE STATIC FUNCTIONS ----------------------- */ | |
945 | ||
946 | /* ARGSUSED */ | |
947 | STATIC void | |
948 | xfs_qm_list_init( | |
949 | xfs_dqlist_t *list, | |
950 | char *str, | |
951 | int n) | |
952 | { | |
794ee1ba | 953 | mutex_init(&list->qh_lock); |
e6a81f13 | 954 | INIT_LIST_HEAD(&list->qh_list); |
1da177e4 LT |
955 | list->qh_version = 0; |
956 | list->qh_nelems = 0; | |
957 | } | |
958 | ||
959 | STATIC void | |
960 | xfs_qm_list_destroy( | |
961 | xfs_dqlist_t *list) | |
962 | { | |
963 | mutex_destroy(&(list->qh_lock)); | |
964 | } | |
965 | ||
1da177e4 LT |
966 | /* |
967 | * Create an inode and return with a reference already taken, but unlocked | |
968 | * This is how we create quota inodes | |
969 | */ | |
970 | STATIC int | |
971 | xfs_qm_qino_alloc( | |
972 | xfs_mount_t *mp, | |
973 | xfs_inode_t **ip, | |
974 | __int64_t sbfields, | |
975 | uint flags) | |
976 | { | |
977 | xfs_trans_t *tp; | |
978 | int error; | |
1da177e4 LT |
979 | int committed; |
980 | ||
061f7209 | 981 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE); |
1da177e4 LT |
982 | if ((error = xfs_trans_reserve(tp, |
983 | XFS_QM_QINOCREATE_SPACE_RES(mp), | |
984 | XFS_CREATE_LOG_RES(mp), 0, | |
985 | XFS_TRANS_PERM_LOG_RES, | |
986 | XFS_CREATE_LOG_COUNT))) { | |
987 | xfs_trans_cancel(tp, 0); | |
014c2544 | 988 | return error; |
1da177e4 | 989 | } |
1da177e4 | 990 | |
6c77b0ea CH |
991 | error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip, &committed); |
992 | if (error) { | |
1da177e4 LT |
993 | xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | |
994 | XFS_TRANS_ABORT); | |
014c2544 | 995 | return error; |
1da177e4 LT |
996 | } |
997 | ||
1da177e4 LT |
998 | /* |
999 | * Make the changes in the superblock, and log those too. | |
1000 | * sbfields arg may contain fields other than *QUOTINO; | |
1001 | * VERSIONNUM for example. | |
1002 | */ | |
3685c2a1 | 1003 | spin_lock(&mp->m_sb_lock); |
1da177e4 | 1004 | if (flags & XFS_QMOPT_SBVERSION) { |
62118709 | 1005 | ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); |
1da177e4 LT |
1006 | ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | |
1007 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)) == | |
1008 | (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1009 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)); | |
1010 | ||
62118709 | 1011 | xfs_sb_version_addquota(&mp->m_sb); |
1da177e4 LT |
1012 | mp->m_sb.sb_uquotino = NULLFSINO; |
1013 | mp->m_sb.sb_gquotino = NULLFSINO; | |
1014 | ||
1015 | /* qflags will get updated _after_ quotacheck */ | |
1016 | mp->m_sb.sb_qflags = 0; | |
1da177e4 LT |
1017 | } |
1018 | if (flags & XFS_QMOPT_UQUOTA) | |
1019 | mp->m_sb.sb_uquotino = (*ip)->i_ino; | |
1020 | else | |
1021 | mp->m_sb.sb_gquotino = (*ip)->i_ino; | |
3685c2a1 | 1022 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
1023 | xfs_mod_sb(tp, sbfields); |
1024 | ||
1c72bf90 | 1025 | if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) { |
53487786 | 1026 | xfs_alert(mp, "%s failed (error %d)!", __func__, error); |
014c2544 | 1027 | return error; |
1da177e4 | 1028 | } |
014c2544 | 1029 | return 0; |
1da177e4 LT |
1030 | } |
1031 | ||
1032 | ||
5b139738 | 1033 | STATIC void |
1da177e4 LT |
1034 | xfs_qm_reset_dqcounts( |
1035 | xfs_mount_t *mp, | |
1036 | xfs_buf_t *bp, | |
1037 | xfs_dqid_t id, | |
1038 | uint type) | |
1039 | { | |
1040 | xfs_disk_dquot_t *ddq; | |
1041 | int j; | |
1042 | ||
0b1b213f CH |
1043 | trace_xfs_reset_dqcounts(bp, _RET_IP_); |
1044 | ||
1da177e4 LT |
1045 | /* |
1046 | * Reset all counters and timers. They'll be | |
1047 | * started afresh by xfs_qm_quotacheck. | |
1048 | */ | |
1049 | #ifdef DEBUG | |
1050 | j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
1051 | do_div(j, sizeof(xfs_dqblk_t)); | |
8a7b8a89 | 1052 | ASSERT(mp->m_quotainfo->qi_dqperchunk == j); |
1da177e4 | 1053 | #endif |
62926044 | 1054 | ddq = bp->b_addr; |
8a7b8a89 | 1055 | for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { |
1da177e4 LT |
1056 | /* |
1057 | * Do a sanity check, and if needed, repair the dqblk. Don't | |
1058 | * output any warnings because it's perfectly possible to | |
c41564b5 | 1059 | * find uninitialised dquot blks. See comment in xfs_qm_dqcheck. |
1da177e4 | 1060 | */ |
a0fa2b67 | 1061 | (void) xfs_qm_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR, |
1da177e4 | 1062 | "xfs_quotacheck"); |
1149d96a CH |
1063 | ddq->d_bcount = 0; |
1064 | ddq->d_icount = 0; | |
1065 | ddq->d_rtbcount = 0; | |
1066 | ddq->d_btimer = 0; | |
1067 | ddq->d_itimer = 0; | |
1068 | ddq->d_rtbtimer = 0; | |
1069 | ddq->d_bwarns = 0; | |
1070 | ddq->d_iwarns = 0; | |
1071 | ddq->d_rtbwarns = 0; | |
1da177e4 LT |
1072 | ddq = (xfs_disk_dquot_t *) ((xfs_dqblk_t *)ddq + 1); |
1073 | } | |
1da177e4 LT |
1074 | } |
1075 | ||
1076 | STATIC int | |
1077 | xfs_qm_dqiter_bufs( | |
1078 | xfs_mount_t *mp, | |
1079 | xfs_dqid_t firstid, | |
1080 | xfs_fsblock_t bno, | |
1081 | xfs_filblks_t blkcnt, | |
1082 | uint flags) | |
1083 | { | |
1084 | xfs_buf_t *bp; | |
1085 | int error; | |
c8ad20ff | 1086 | int type; |
1da177e4 LT |
1087 | |
1088 | ASSERT(blkcnt > 0); | |
c8ad20ff NS |
1089 | type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER : |
1090 | (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP); | |
1da177e4 LT |
1091 | error = 0; |
1092 | ||
1093 | /* | |
1094 | * Blkcnt arg can be a very big number, and might even be | |
1095 | * larger than the log itself. So, we have to break it up into | |
1096 | * manageable-sized transactions. | |
1097 | * Note that we don't start a permanent transaction here; we might | |
1098 | * not be able to get a log reservation for the whole thing up front, | |
1099 | * and we don't really care to either, because we just discard | |
1100 | * everything if we were to crash in the middle of this loop. | |
1101 | */ | |
1102 | while (blkcnt--) { | |
1103 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1104 | XFS_FSB_TO_DADDR(mp, bno), | |
8a7b8a89 | 1105 | mp->m_quotainfo->qi_dqchunklen, 0, &bp); |
1da177e4 LT |
1106 | if (error) |
1107 | break; | |
1108 | ||
5b139738 | 1109 | xfs_qm_reset_dqcounts(mp, bp, firstid, type); |
61551f1e CH |
1110 | xfs_buf_delwri_queue(bp); |
1111 | xfs_buf_relse(bp); | |
1da177e4 LT |
1112 | /* |
1113 | * goto the next block. | |
1114 | */ | |
1115 | bno++; | |
8a7b8a89 | 1116 | firstid += mp->m_quotainfo->qi_dqperchunk; |
1da177e4 | 1117 | } |
014c2544 | 1118 | return error; |
1da177e4 LT |
1119 | } |
1120 | ||
1121 | /* | |
c8ad20ff | 1122 | * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a |
1da177e4 LT |
1123 | * caller supplied function for every chunk of dquots that we find. |
1124 | */ | |
1125 | STATIC int | |
1126 | xfs_qm_dqiterate( | |
1127 | xfs_mount_t *mp, | |
1128 | xfs_inode_t *qip, | |
1129 | uint flags) | |
1130 | { | |
1131 | xfs_bmbt_irec_t *map; | |
1132 | int i, nmaps; /* number of map entries */ | |
1133 | int error; /* return value */ | |
1134 | xfs_fileoff_t lblkno; | |
1135 | xfs_filblks_t maxlblkcnt; | |
1136 | xfs_dqid_t firstid; | |
1137 | xfs_fsblock_t rablkno; | |
1138 | xfs_filblks_t rablkcnt; | |
1139 | ||
1140 | error = 0; | |
1141 | /* | |
c41564b5 | 1142 | * This looks racy, but we can't keep an inode lock across a |
1da177e4 LT |
1143 | * trans_reserve. But, this gets called during quotacheck, and that |
1144 | * happens only at mount time which is single threaded. | |
1145 | */ | |
1146 | if (qip->i_d.di_nblocks == 0) | |
014c2544 | 1147 | return 0; |
1da177e4 LT |
1148 | |
1149 | map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP); | |
1150 | ||
1151 | lblkno = 0; | |
1152 | maxlblkcnt = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_MAXIOFFSET(mp)); | |
1153 | do { | |
1154 | nmaps = XFS_DQITER_MAP_SIZE; | |
1155 | /* | |
1156 | * We aren't changing the inode itself. Just changing | |
1157 | * some of its data. No new blocks are added here, and | |
1158 | * the inode is never added to the transaction. | |
1159 | */ | |
1160 | xfs_ilock(qip, XFS_ILOCK_SHARED); | |
5c8ed202 DC |
1161 | error = xfs_bmapi_read(qip, lblkno, maxlblkcnt - lblkno, |
1162 | map, &nmaps, 0); | |
1da177e4 LT |
1163 | xfs_iunlock(qip, XFS_ILOCK_SHARED); |
1164 | if (error) | |
1165 | break; | |
1166 | ||
1167 | ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); | |
1168 | for (i = 0; i < nmaps; i++) { | |
1169 | ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); | |
1170 | ASSERT(map[i].br_blockcount); | |
1171 | ||
1172 | ||
1173 | lblkno += map[i].br_blockcount; | |
1174 | ||
1175 | if (map[i].br_startblock == HOLESTARTBLOCK) | |
1176 | continue; | |
1177 | ||
1178 | firstid = (xfs_dqid_t) map[i].br_startoff * | |
8a7b8a89 | 1179 | mp->m_quotainfo->qi_dqperchunk; |
1da177e4 LT |
1180 | /* |
1181 | * Do a read-ahead on the next extent. | |
1182 | */ | |
1183 | if ((i+1 < nmaps) && | |
1184 | (map[i+1].br_startblock != HOLESTARTBLOCK)) { | |
1185 | rablkcnt = map[i+1].br_blockcount; | |
1186 | rablkno = map[i+1].br_startblock; | |
1187 | while (rablkcnt--) { | |
1a1a3e97 | 1188 | xfs_buf_readahead(mp->m_ddev_targp, |
1da177e4 | 1189 | XFS_FSB_TO_DADDR(mp, rablkno), |
8a7b8a89 | 1190 | mp->m_quotainfo->qi_dqchunklen); |
1da177e4 LT |
1191 | rablkno++; |
1192 | } | |
1193 | } | |
1194 | /* | |
1195 | * Iterate thru all the blks in the extent and | |
1196 | * reset the counters of all the dquots inside them. | |
1197 | */ | |
1198 | if ((error = xfs_qm_dqiter_bufs(mp, | |
1199 | firstid, | |
1200 | map[i].br_startblock, | |
1201 | map[i].br_blockcount, | |
1202 | flags))) { | |
1203 | break; | |
1204 | } | |
1205 | } | |
1206 | ||
1207 | if (error) | |
1208 | break; | |
1209 | } while (nmaps > 0); | |
1210 | ||
f0e2d93c | 1211 | kmem_free(map); |
1da177e4 | 1212 | |
014c2544 | 1213 | return error; |
1da177e4 LT |
1214 | } |
1215 | ||
1216 | /* | |
1217 | * Called by dqusage_adjust in doing a quotacheck. | |
52fda114 CH |
1218 | * |
1219 | * Given the inode, and a dquot id this updates both the incore dqout as well | |
1220 | * as the buffer copy. This is so that once the quotacheck is done, we can | |
1221 | * just log all the buffers, as opposed to logging numerous updates to | |
1222 | * individual dquots. | |
1da177e4 | 1223 | */ |
52fda114 | 1224 | STATIC int |
1da177e4 | 1225 | xfs_qm_quotacheck_dqadjust( |
52fda114 CH |
1226 | struct xfs_inode *ip, |
1227 | xfs_dqid_t id, | |
1228 | uint type, | |
1da177e4 LT |
1229 | xfs_qcnt_t nblks, |
1230 | xfs_qcnt_t rtblks) | |
1231 | { | |
52fda114 CH |
1232 | struct xfs_mount *mp = ip->i_mount; |
1233 | struct xfs_dquot *dqp; | |
1234 | int error; | |
1235 | ||
1236 | error = xfs_qm_dqget(mp, ip, id, type, | |
1237 | XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp); | |
1238 | if (error) { | |
1239 | /* | |
1240 | * Shouldn't be able to turn off quotas here. | |
1241 | */ | |
1242 | ASSERT(error != ESRCH); | |
1243 | ASSERT(error != ENOENT); | |
1244 | return error; | |
1245 | } | |
0b1b213f CH |
1246 | |
1247 | trace_xfs_dqadjust(dqp); | |
1248 | ||
1da177e4 LT |
1249 | /* |
1250 | * Adjust the inode count and the block count to reflect this inode's | |
1251 | * resource usage. | |
1252 | */ | |
413d57c9 | 1253 | be64_add_cpu(&dqp->q_core.d_icount, 1); |
1da177e4 LT |
1254 | dqp->q_res_icount++; |
1255 | if (nblks) { | |
413d57c9 | 1256 | be64_add_cpu(&dqp->q_core.d_bcount, nblks); |
1da177e4 LT |
1257 | dqp->q_res_bcount += nblks; |
1258 | } | |
1259 | if (rtblks) { | |
413d57c9 | 1260 | be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks); |
1da177e4 LT |
1261 | dqp->q_res_rtbcount += rtblks; |
1262 | } | |
1263 | ||
1264 | /* | |
1265 | * Set default limits, adjust timers (since we changed usages) | |
191f8488 CH |
1266 | * |
1267 | * There are no timers for the default values set in the root dquot. | |
1da177e4 | 1268 | */ |
191f8488 | 1269 | if (dqp->q_core.d_id) { |
52fda114 CH |
1270 | xfs_qm_adjust_dqlimits(mp, &dqp->q_core); |
1271 | xfs_qm_adjust_dqtimers(mp, &dqp->q_core); | |
1da177e4 LT |
1272 | } |
1273 | ||
1274 | dqp->dq_flags |= XFS_DQ_DIRTY; | |
52fda114 CH |
1275 | xfs_qm_dqput(dqp); |
1276 | return 0; | |
1da177e4 LT |
1277 | } |
1278 | ||
1279 | STATIC int | |
1280 | xfs_qm_get_rtblks( | |
1281 | xfs_inode_t *ip, | |
1282 | xfs_qcnt_t *O_rtblks) | |
1283 | { | |
1284 | xfs_filblks_t rtblks; /* total rt blks */ | |
4eea22f0 | 1285 | xfs_extnum_t idx; /* extent record index */ |
1da177e4 LT |
1286 | xfs_ifork_t *ifp; /* inode fork pointer */ |
1287 | xfs_extnum_t nextents; /* number of extent entries */ | |
1da177e4 LT |
1288 | int error; |
1289 | ||
1290 | ASSERT(XFS_IS_REALTIME_INODE(ip)); | |
1291 | ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); | |
1292 | if (!(ifp->if_flags & XFS_IFEXTENTS)) { | |
1293 | if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK))) | |
014c2544 | 1294 | return error; |
1da177e4 LT |
1295 | } |
1296 | rtblks = 0; | |
4eea22f0 | 1297 | nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); |
a6f64d4a CH |
1298 | for (idx = 0; idx < nextents; idx++) |
1299 | rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx)); | |
1da177e4 | 1300 | *O_rtblks = (xfs_qcnt_t)rtblks; |
014c2544 | 1301 | return 0; |
1da177e4 LT |
1302 | } |
1303 | ||
1304 | /* | |
1305 | * callback routine supplied to bulkstat(). Given an inumber, find its | |
1306 | * dquots and update them to account for resources taken by that inode. | |
1307 | */ | |
1308 | /* ARGSUSED */ | |
1309 | STATIC int | |
1310 | xfs_qm_dqusage_adjust( | |
1311 | xfs_mount_t *mp, /* mount point for filesystem */ | |
1312 | xfs_ino_t ino, /* inode number to get data for */ | |
1313 | void __user *buffer, /* not used */ | |
1314 | int ubsize, /* not used */ | |
1da177e4 | 1315 | int *ubused, /* not used */ |
1da177e4 LT |
1316 | int *res) /* result code value */ |
1317 | { | |
1318 | xfs_inode_t *ip; | |
52fda114 | 1319 | xfs_qcnt_t nblks, rtblks = 0; |
1da177e4 LT |
1320 | int error; |
1321 | ||
1322 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
1323 | ||
1324 | /* | |
1325 | * rootino must have its resources accounted for, not so with the quota | |
1326 | * inodes. | |
1327 | */ | |
1328 | if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) { | |
1329 | *res = BULKSTAT_RV_NOTHING; | |
1330 | return XFS_ERROR(EINVAL); | |
1331 | } | |
1332 | ||
1333 | /* | |
1334 | * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget | |
1335 | * interface expects the inode to be exclusively locked because that's | |
1336 | * the case in all other instances. It's OK that we do this because | |
1337 | * quotacheck is done only at mount time. | |
1338 | */ | |
52fda114 CH |
1339 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_EXCL, &ip); |
1340 | if (error) { | |
1da177e4 | 1341 | *res = BULKSTAT_RV_NOTHING; |
014c2544 | 1342 | return error; |
1da177e4 LT |
1343 | } |
1344 | ||
52fda114 | 1345 | ASSERT(ip->i_delayed_blks == 0); |
1da177e4 | 1346 | |
52fda114 | 1347 | if (XFS_IS_REALTIME_INODE(ip)) { |
1da177e4 LT |
1348 | /* |
1349 | * Walk thru the extent list and count the realtime blocks. | |
1350 | */ | |
52fda114 CH |
1351 | error = xfs_qm_get_rtblks(ip, &rtblks); |
1352 | if (error) | |
1353 | goto error0; | |
1da177e4 | 1354 | } |
1da177e4 | 1355 | |
52fda114 | 1356 | nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks; |
1da177e4 LT |
1357 | |
1358 | /* | |
1359 | * Add the (disk blocks and inode) resources occupied by this | |
1360 | * inode to its dquots. We do this adjustment in the incore dquot, | |
1361 | * and also copy the changes to its buffer. | |
1362 | * We don't care about putting these changes in a transaction | |
1363 | * envelope because if we crash in the middle of a 'quotacheck' | |
1364 | * we have to start from the beginning anyway. | |
1365 | * Once we're done, we'll log all the dquot bufs. | |
1366 | * | |
c41564b5 | 1367 | * The *QUOTA_ON checks below may look pretty racy, but quotachecks |
1da177e4 LT |
1368 | * and quotaoffs don't race. (Quotachecks happen at mount time only). |
1369 | */ | |
1370 | if (XFS_IS_UQUOTA_ON(mp)) { | |
52fda114 CH |
1371 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid, |
1372 | XFS_DQ_USER, nblks, rtblks); | |
1373 | if (error) | |
1374 | goto error0; | |
1da177e4 | 1375 | } |
52fda114 CH |
1376 | |
1377 | if (XFS_IS_GQUOTA_ON(mp)) { | |
1378 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid, | |
1379 | XFS_DQ_GROUP, nblks, rtblks); | |
1380 | if (error) | |
1381 | goto error0; | |
1da177e4 | 1382 | } |
1da177e4 | 1383 | |
52fda114 | 1384 | if (XFS_IS_PQUOTA_ON(mp)) { |
6743099c | 1385 | error = xfs_qm_quotacheck_dqadjust(ip, xfs_get_projid(ip), |
52fda114 CH |
1386 | XFS_DQ_PROJ, nblks, rtblks); |
1387 | if (error) | |
1388 | goto error0; | |
1389 | } | |
1390 | ||
1391 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1392 | IRELE(ip); | |
1da177e4 | 1393 | *res = BULKSTAT_RV_DIDONE; |
014c2544 | 1394 | return 0; |
52fda114 CH |
1395 | |
1396 | error0: | |
1397 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1398 | IRELE(ip); | |
1399 | *res = BULKSTAT_RV_GIVEUP; | |
1400 | return error; | |
1da177e4 LT |
1401 | } |
1402 | ||
1403 | /* | |
1404 | * Walk thru all the filesystem inodes and construct a consistent view | |
1405 | * of the disk quota world. If the quotacheck fails, disable quotas. | |
1406 | */ | |
1407 | int | |
1408 | xfs_qm_quotacheck( | |
1409 | xfs_mount_t *mp) | |
1410 | { | |
1411 | int done, count, error; | |
1412 | xfs_ino_t lastino; | |
1413 | size_t structsz; | |
1414 | xfs_inode_t *uip, *gip; | |
1415 | uint flags; | |
1416 | ||
1417 | count = INT_MAX; | |
1418 | structsz = 1; | |
1419 | lastino = 0; | |
1420 | flags = 0; | |
1421 | ||
8a7b8a89 | 1422 | ASSERT(mp->m_quotainfo->qi_uquotaip || mp->m_quotainfo->qi_gquotaip); |
1da177e4 LT |
1423 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1424 | ||
1425 | /* | |
1426 | * There should be no cached dquots. The (simplistic) quotacheck | |
1427 | * algorithm doesn't like that. | |
1428 | */ | |
3a25404b | 1429 | ASSERT(list_empty(&mp->m_quotainfo->qi_dqlist)); |
1da177e4 | 1430 | |
0b932ccc | 1431 | xfs_notice(mp, "Quotacheck needed: Please wait."); |
1da177e4 LT |
1432 | |
1433 | /* | |
c8ad20ff | 1434 | * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset |
1da177e4 LT |
1435 | * their counters to zero. We need a clean slate. |
1436 | * We don't log our changes till later. | |
1437 | */ | |
8a7b8a89 CH |
1438 | uip = mp->m_quotainfo->qi_uquotaip; |
1439 | if (uip) { | |
1440 | error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA); | |
1441 | if (error) | |
1da177e4 LT |
1442 | goto error_return; |
1443 | flags |= XFS_UQUOTA_CHKD; | |
1444 | } | |
1445 | ||
8a7b8a89 CH |
1446 | gip = mp->m_quotainfo->qi_gquotaip; |
1447 | if (gip) { | |
1448 | error = xfs_qm_dqiterate(mp, gip, XFS_IS_GQUOTA_ON(mp) ? | |
1449 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1450 | if (error) | |
1da177e4 | 1451 | goto error_return; |
c8ad20ff | 1452 | flags |= XFS_OQUOTA_CHKD; |
1da177e4 LT |
1453 | } |
1454 | ||
1455 | do { | |
1456 | /* | |
1457 | * Iterate thru all the inodes in the file system, | |
1458 | * adjusting the corresponding dquot counters in core. | |
1459 | */ | |
7dce11db CH |
1460 | error = xfs_bulkstat(mp, &lastino, &count, |
1461 | xfs_qm_dqusage_adjust, | |
1462 | structsz, NULL, &done); | |
1463 | if (error) | |
1da177e4 LT |
1464 | break; |
1465 | ||
7dce11db | 1466 | } while (!done); |
1da177e4 | 1467 | |
4b8879df DC |
1468 | /* |
1469 | * We've made all the changes that we need to make incore. | |
1470 | * Flush them down to disk buffers if everything was updated | |
1471 | * successfully. | |
1472 | */ | |
1473 | if (!error) | |
a7ef9bd7 | 1474 | error = xfs_qm_dqflush_all(mp); |
4b8879df | 1475 | |
1da177e4 LT |
1476 | /* |
1477 | * We can get this error if we couldn't do a dquot allocation inside | |
1478 | * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the | |
1479 | * dirty dquots that might be cached, we just want to get rid of them | |
1480 | * and turn quotaoff. The dquots won't be attached to any of the inodes | |
1481 | * at this point (because we intentionally didn't in dqget_noattach). | |
1482 | */ | |
1483 | if (error) { | |
8112e9dc | 1484 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 LT |
1485 | goto error_return; |
1486 | } | |
1da177e4 LT |
1487 | |
1488 | /* | |
1489 | * We didn't log anything, because if we crashed, we'll have to | |
1490 | * start the quotacheck from scratch anyway. However, we must make | |
1491 | * sure that our dquot changes are secure before we put the | |
1492 | * quotacheck'd stamp on the superblock. So, here we do a synchronous | |
1493 | * flush. | |
1494 | */ | |
a9add83e | 1495 | xfs_flush_buftarg(mp->m_ddev_targp, 1); |
1da177e4 LT |
1496 | |
1497 | /* | |
1498 | * If one type of quotas is off, then it will lose its | |
1499 | * quotachecked status, since we won't be doing accounting for | |
1500 | * that type anymore. | |
1501 | */ | |
4177af3a | 1502 | mp->m_qflags &= ~XFS_ALL_QUOTA_CHKD; |
1da177e4 LT |
1503 | mp->m_qflags |= flags; |
1504 | ||
1da177e4 LT |
1505 | error_return: |
1506 | if (error) { | |
0b932ccc DC |
1507 | xfs_warn(mp, |
1508 | "Quotacheck: Unsuccessful (Error %d): Disabling quotas.", | |
1509 | error); | |
1da177e4 LT |
1510 | /* |
1511 | * We must turn off quotas. | |
1512 | */ | |
1513 | ASSERT(mp->m_quotainfo != NULL); | |
1514 | ASSERT(xfs_Gqm != NULL); | |
1515 | xfs_qm_destroy_quotainfo(mp); | |
31d5577b | 1516 | if (xfs_mount_reset_sbqflags(mp)) { |
0b932ccc DC |
1517 | xfs_warn(mp, |
1518 | "Quotacheck: Failed to reset quota flags."); | |
31d5577b | 1519 | } |
0b932ccc DC |
1520 | } else |
1521 | xfs_notice(mp, "Quotacheck: Done."); | |
1da177e4 LT |
1522 | return (error); |
1523 | } | |
1524 | ||
1525 | /* | |
1526 | * This is called after the superblock has been read in and we're ready to | |
1527 | * iget the quota inodes. | |
1528 | */ | |
1529 | STATIC int | |
1530 | xfs_qm_init_quotainos( | |
1531 | xfs_mount_t *mp) | |
1532 | { | |
1533 | xfs_inode_t *uip, *gip; | |
1534 | int error; | |
1535 | __int64_t sbflags; | |
1536 | uint flags; | |
1537 | ||
1538 | ASSERT(mp->m_quotainfo); | |
1539 | uip = gip = NULL; | |
1540 | sbflags = 0; | |
1541 | flags = 0; | |
1542 | ||
1543 | /* | |
1544 | * Get the uquota and gquota inodes | |
1545 | */ | |
62118709 | 1546 | if (xfs_sb_version_hasquota(&mp->m_sb)) { |
1da177e4 LT |
1547 | if (XFS_IS_UQUOTA_ON(mp) && |
1548 | mp->m_sb.sb_uquotino != NULLFSINO) { | |
1549 | ASSERT(mp->m_sb.sb_uquotino > 0); | |
1550 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, | |
7b6259e7 | 1551 | 0, 0, &uip))) |
1da177e4 LT |
1552 | return XFS_ERROR(error); |
1553 | } | |
c8ad20ff | 1554 | if (XFS_IS_OQUOTA_ON(mp) && |
1da177e4 LT |
1555 | mp->m_sb.sb_gquotino != NULLFSINO) { |
1556 | ASSERT(mp->m_sb.sb_gquotino > 0); | |
1557 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, | |
7b6259e7 | 1558 | 0, 0, &gip))) { |
1da177e4 | 1559 | if (uip) |
43355099 | 1560 | IRELE(uip); |
1da177e4 LT |
1561 | return XFS_ERROR(error); |
1562 | } | |
1563 | } | |
1564 | } else { | |
1565 | flags |= XFS_QMOPT_SBVERSION; | |
1566 | sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1567 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS); | |
1568 | } | |
1569 | ||
1570 | /* | |
1571 | * Create the two inodes, if they don't exist already. The changes | |
1572 | * made above will get added to a transaction and logged in one of | |
1573 | * the qino_alloc calls below. If the device is readonly, | |
1574 | * temporarily switch to read-write to do this. | |
1575 | */ | |
1576 | if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { | |
1577 | if ((error = xfs_qm_qino_alloc(mp, &uip, | |
1578 | sbflags | XFS_SB_UQUOTINO, | |
1579 | flags | XFS_QMOPT_UQUOTA))) | |
1580 | return XFS_ERROR(error); | |
1581 | ||
1582 | flags &= ~XFS_QMOPT_SBVERSION; | |
1583 | } | |
c8ad20ff NS |
1584 | if (XFS_IS_OQUOTA_ON(mp) && gip == NULL) { |
1585 | flags |= (XFS_IS_GQUOTA_ON(mp) ? | |
1586 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1587 | error = xfs_qm_qino_alloc(mp, &gip, | |
1588 | sbflags | XFS_SB_GQUOTINO, flags); | |
1589 | if (error) { | |
1da177e4 | 1590 | if (uip) |
43355099 | 1591 | IRELE(uip); |
1da177e4 LT |
1592 | |
1593 | return XFS_ERROR(error); | |
1594 | } | |
1595 | } | |
1596 | ||
8a7b8a89 CH |
1597 | mp->m_quotainfo->qi_uquotaip = uip; |
1598 | mp->m_quotainfo->qi_gquotaip = gip; | |
1da177e4 | 1599 | |
014c2544 | 1600 | return 0; |
1da177e4 LT |
1601 | } |
1602 | ||
1603 | ||
368e1361 | 1604 | |
1da177e4 | 1605 | /* |
92678554 | 1606 | * Pop the least recently used dquot off the freelist and recycle it. |
1da177e4 | 1607 | */ |
92678554 | 1608 | STATIC struct xfs_dquot * |
368e1361 | 1609 | xfs_qm_dqreclaim_one(void) |
1da177e4 | 1610 | { |
92678554 CH |
1611 | struct xfs_dquot *dqp; |
1612 | int restarts = 0; | |
1da177e4 | 1613 | |
3a8406f6 | 1614 | mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); |
92678554 | 1615 | restart: |
3a8406f6 | 1616 | list_for_each_entry(dqp, &xfs_Gqm->qm_dqfrlist, q_freelist) { |
3a25404b | 1617 | struct xfs_mount *mp = dqp->q_mount; |
bf72de31 CH |
1618 | |
1619 | if (!xfs_dqlock_nowait(dqp)) | |
1620 | continue; | |
1da177e4 LT |
1621 | |
1622 | /* | |
be7ffc38 CH |
1623 | * This dquot has already been grabbed by dqlookup. |
1624 | * Remove it from the freelist and try again. | |
1da177e4 | 1625 | */ |
be7ffc38 | 1626 | if (dqp->q_nrefs) { |
368e1361 | 1627 | trace_xfs_dqreclaim_want(dqp); |
1da177e4 | 1628 | XQM_STATS_INC(xqmstats.xs_qm_dqwants); |
be7ffc38 CH |
1629 | |
1630 | list_del_init(&dqp->q_freelist); | |
1631 | xfs_Gqm->qm_dqfrlist_cnt--; | |
0fbca4d1 | 1632 | restarts++; |
0fbca4d1 | 1633 | goto dqunlock; |
1da177e4 LT |
1634 | } |
1635 | ||
368e1361 | 1636 | ASSERT(dqp->q_hash); |
3a25404b | 1637 | ASSERT(!list_empty(&dqp->q_mplist)); |
368e1361 | 1638 | |
1da177e4 | 1639 | /* |
0fbca4d1 DC |
1640 | * Try to grab the flush lock. If this dquot is in the process |
1641 | * of getting flushed to disk, we don't want to reclaim it. | |
1da177e4 | 1642 | */ |
0fbca4d1 DC |
1643 | if (!xfs_dqflock_nowait(dqp)) |
1644 | goto dqunlock; | |
1da177e4 LT |
1645 | |
1646 | /* | |
1647 | * We have the flush lock so we know that this is not in the | |
1648 | * process of being flushed. So, if this is dirty, flush it | |
1649 | * DELWRI so that we don't get a freelist infested with | |
1650 | * dirty dquots. | |
1651 | */ | |
1652 | if (XFS_DQ_IS_DIRTY(dqp)) { | |
3c56836f | 1653 | int error; |
0b1b213f | 1654 | |
368e1361 | 1655 | trace_xfs_dqreclaim_dirty(dqp); |
0b1b213f | 1656 | |
1da177e4 LT |
1657 | /* |
1658 | * We flush it delayed write, so don't bother | |
368e1361 | 1659 | * releasing the freelist lock. |
1da177e4 | 1660 | */ |
fdedf28b | 1661 | error = xfs_qm_dqflush(dqp, SYNC_TRYLOCK); |
3c56836f | 1662 | if (error) { |
53487786 DC |
1663 | xfs_warn(mp, "%s: dquot %p flush failed", |
1664 | __func__, dqp); | |
3c56836f | 1665 | } |
0fbca4d1 | 1666 | goto dqunlock; |
1da177e4 | 1667 | } |
92678554 | 1668 | xfs_dqfunlock(dqp); |
368e1361 | 1669 | |
1da177e4 | 1670 | /* |
92678554 CH |
1671 | * Prevent lookup now that we are going to reclaim the dquot. |
1672 | * Once XFS_DQ_FREEING is set lookup won't touch the dquot, | |
1673 | * thus we can drop the lock now. | |
1da177e4 | 1674 | */ |
92678554 CH |
1675 | dqp->dq_flags |= XFS_DQ_FREEING; |
1676 | xfs_dqunlock(dqp); | |
368e1361 | 1677 | |
92678554 CH |
1678 | mutex_lock(&dqp->q_hash->qh_lock); |
1679 | list_del_init(&dqp->q_hashlist); | |
1680 | dqp->q_hash->qh_version++; | |
1681 | mutex_unlock(&dqp->q_hash->qh_lock); | |
0b1b213f | 1682 | |
92678554 | 1683 | mutex_lock(&mp->m_quotainfo->qi_dqlist_lock); |
3a25404b DC |
1684 | list_del_init(&dqp->q_mplist); |
1685 | mp->m_quotainfo->qi_dquots--; | |
1686 | mp->m_quotainfo->qi_dqreclaims++; | |
92678554 CH |
1687 | mutex_unlock(&mp->m_quotainfo->qi_dqlist_lock); |
1688 | ||
1689 | ASSERT(dqp->q_nrefs == 0); | |
3a8406f6 DC |
1690 | list_del_init(&dqp->q_freelist); |
1691 | xfs_Gqm->qm_dqfrlist_cnt--; | |
92678554 CH |
1692 | |
1693 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); | |
1694 | return dqp; | |
0fbca4d1 | 1695 | dqunlock: |
1da177e4 | 1696 | xfs_dqunlock(dqp); |
368e1361 | 1697 | if (restarts >= XFS_QM_RECLAIM_MAX_RESTARTS) |
0fbca4d1 | 1698 | break; |
92678554 | 1699 | goto restart; |
1da177e4 | 1700 | } |
92678554 | 1701 | |
3a8406f6 | 1702 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
92678554 | 1703 | return NULL; |
1da177e4 LT |
1704 | } |
1705 | ||
368e1361 DC |
1706 | /* |
1707 | * Traverse the freelist of dquots and attempt to reclaim a maximum of | |
1708 | * 'howmany' dquots. This operation races with dqlookup(), and attempts to | |
1709 | * favor the lookup function ... | |
1710 | */ | |
1711 | STATIC int | |
1712 | xfs_qm_shake_freelist( | |
1713 | int howmany) | |
1714 | { | |
1715 | int nreclaimed = 0; | |
1716 | xfs_dquot_t *dqp; | |
1717 | ||
1718 | if (howmany <= 0) | |
1719 | return 0; | |
1720 | ||
1721 | while (nreclaimed < howmany) { | |
1722 | dqp = xfs_qm_dqreclaim_one(); | |
1723 | if (!dqp) | |
1724 | return nreclaimed; | |
1725 | xfs_qm_dqdestroy(dqp); | |
1726 | nreclaimed++; | |
1727 | } | |
1728 | return nreclaimed; | |
1729 | } | |
1da177e4 LT |
1730 | |
1731 | /* | |
1732 | * The kmem_shake interface is invoked when memory is running low. | |
1733 | */ | |
1734 | /* ARGSUSED */ | |
1735 | STATIC int | |
7f8275d0 DC |
1736 | xfs_qm_shake( |
1737 | struct shrinker *shrink, | |
1495f230 | 1738 | struct shrink_control *sc) |
1da177e4 LT |
1739 | { |
1740 | int ndqused, nfree, n; | |
1495f230 | 1741 | gfp_t gfp_mask = sc->gfp_mask; |
1da177e4 LT |
1742 | |
1743 | if (!kmem_shake_allow(gfp_mask)) | |
014c2544 | 1744 | return 0; |
1da177e4 | 1745 | if (!xfs_Gqm) |
014c2544 | 1746 | return 0; |
1da177e4 | 1747 | |
3a8406f6 | 1748 | nfree = xfs_Gqm->qm_dqfrlist_cnt; /* free dquots */ |
1da177e4 LT |
1749 | /* incore dquots in all f/s's */ |
1750 | ndqused = atomic_read(&xfs_Gqm->qm_totaldquots) - nfree; | |
1751 | ||
1752 | ASSERT(ndqused >= 0); | |
1753 | ||
1754 | if (nfree <= ndqused && nfree < ndquot) | |
014c2544 | 1755 | return 0; |
1da177e4 LT |
1756 | |
1757 | ndqused *= xfs_Gqm->qm_dqfree_ratio; /* target # of free dquots */ | |
1758 | n = nfree - ndqused - ndquot; /* # over target */ | |
1759 | ||
1760 | return xfs_qm_shake_freelist(MAX(nfree, n)); | |
1761 | } | |
1762 | ||
1763 | ||
1da177e4 LT |
1764 | /*------------------------------------------------------------------*/ |
1765 | ||
1766 | /* | |
1767 | * Return a new incore dquot. Depending on the number of | |
1768 | * dquots in the system, we either allocate a new one on the kernel heap, | |
1769 | * or reclaim a free one. | |
1770 | * Return value is B_TRUE if we allocated a new dquot, B_FALSE if we managed | |
1771 | * to reclaim an existing one from the freelist. | |
1772 | */ | |
1773 | boolean_t | |
1774 | xfs_qm_dqalloc_incore( | |
1775 | xfs_dquot_t **O_dqpp) | |
1776 | { | |
1777 | xfs_dquot_t *dqp; | |
1778 | ||
1779 | /* | |
1780 | * Check against high water mark to see if we want to pop | |
1781 | * a nincompoop dquot off the freelist. | |
1782 | */ | |
1783 | if (atomic_read(&xfs_Gqm->qm_totaldquots) >= ndquot) { | |
1784 | /* | |
1785 | * Try to recycle a dquot from the freelist. | |
1786 | */ | |
1787 | if ((dqp = xfs_qm_dqreclaim_one())) { | |
1788 | XQM_STATS_INC(xqmstats.xs_qm_dqreclaims); | |
1789 | /* | |
1790 | * Just zero the core here. The rest will get | |
1791 | * reinitialized by caller. XXX we shouldn't even | |
1792 | * do this zero ... | |
1793 | */ | |
1794 | memset(&dqp->q_core, 0, sizeof(dqp->q_core)); | |
1795 | *O_dqpp = dqp; | |
014c2544 | 1796 | return B_FALSE; |
1da177e4 LT |
1797 | } |
1798 | XQM_STATS_INC(xqmstats.xs_qm_dqreclaim_misses); | |
1799 | } | |
1800 | ||
1801 | /* | |
1802 | * Allocate a brand new dquot on the kernel heap and return it | |
1803 | * to the caller to initialize. | |
1804 | */ | |
1805 | ASSERT(xfs_Gqm->qm_dqzone != NULL); | |
1806 | *O_dqpp = kmem_zone_zalloc(xfs_Gqm->qm_dqzone, KM_SLEEP); | |
1807 | atomic_inc(&xfs_Gqm->qm_totaldquots); | |
1808 | ||
014c2544 | 1809 | return B_TRUE; |
1da177e4 LT |
1810 | } |
1811 | ||
1812 | ||
1813 | /* | |
1814 | * Start a transaction and write the incore superblock changes to | |
1815 | * disk. flags parameter indicates which fields have changed. | |
1816 | */ | |
1817 | int | |
1818 | xfs_qm_write_sb_changes( | |
1819 | xfs_mount_t *mp, | |
1820 | __int64_t flags) | |
1821 | { | |
1822 | xfs_trans_t *tp; | |
1823 | int error; | |
1824 | ||
1da177e4 LT |
1825 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); |
1826 | if ((error = xfs_trans_reserve(tp, 0, | |
1827 | mp->m_sb.sb_sectsize + 128, 0, | |
1828 | 0, | |
1829 | XFS_DEFAULT_LOG_COUNT))) { | |
1830 | xfs_trans_cancel(tp, 0); | |
014c2544 | 1831 | return error; |
1da177e4 LT |
1832 | } |
1833 | ||
1834 | xfs_mod_sb(tp, flags); | |
e5720eec | 1835 | error = xfs_trans_commit(tp, 0); |
1da177e4 | 1836 | |
e5720eec | 1837 | return error; |
1da177e4 LT |
1838 | } |
1839 | ||
1840 | ||
1841 | /* --------------- utility functions for vnodeops ---------------- */ | |
1842 | ||
1843 | ||
1844 | /* | |
6c77b0ea | 1845 | * Given an inode, a uid, gid and prid make sure that we have |
1da177e4 LT |
1846 | * allocated relevant dquot(s) on disk, and that we won't exceed inode |
1847 | * quotas by creating this file. | |
1848 | * This also attaches dquot(s) to the given inode after locking it, | |
1849 | * and returns the dquots corresponding to the uid and/or gid. | |
1850 | * | |
1851 | * in : inode (unlocked) | |
1852 | * out : udquot, gdquot with references taken and unlocked | |
1853 | */ | |
1854 | int | |
1855 | xfs_qm_vop_dqalloc( | |
7d095257 CH |
1856 | struct xfs_inode *ip, |
1857 | uid_t uid, | |
1858 | gid_t gid, | |
1859 | prid_t prid, | |
1860 | uint flags, | |
1861 | struct xfs_dquot **O_udqpp, | |
1862 | struct xfs_dquot **O_gdqpp) | |
1da177e4 | 1863 | { |
7d095257 CH |
1864 | struct xfs_mount *mp = ip->i_mount; |
1865 | struct xfs_dquot *uq, *gq; | |
1866 | int error; | |
1867 | uint lockflags; | |
1da177e4 | 1868 | |
7d095257 | 1869 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
1da177e4 LT |
1870 | return 0; |
1871 | ||
1872 | lockflags = XFS_ILOCK_EXCL; | |
1873 | xfs_ilock(ip, lockflags); | |
1874 | ||
bd186aa9 | 1875 | if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) |
1da177e4 LT |
1876 | gid = ip->i_d.di_gid; |
1877 | ||
1878 | /* | |
1879 | * Attach the dquot(s) to this inode, doing a dquot allocation | |
1880 | * if necessary. The dquot(s) will not be locked. | |
1881 | */ | |
1882 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
7d095257 CH |
1883 | error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC); |
1884 | if (error) { | |
1da177e4 | 1885 | xfs_iunlock(ip, lockflags); |
014c2544 | 1886 | return error; |
1da177e4 LT |
1887 | } |
1888 | } | |
1889 | ||
1890 | uq = gq = NULL; | |
c8ad20ff | 1891 | if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { |
1da177e4 LT |
1892 | if (ip->i_d.di_uid != uid) { |
1893 | /* | |
1894 | * What we need is the dquot that has this uid, and | |
1895 | * if we send the inode to dqget, the uid of the inode | |
1896 | * takes priority over what's sent in the uid argument. | |
1897 | * We must unlock inode here before calling dqget if | |
1898 | * we're not sending the inode, because otherwise | |
1899 | * we'll deadlock by doing trans_reserve while | |
1900 | * holding ilock. | |
1901 | */ | |
1902 | xfs_iunlock(ip, lockflags); | |
1903 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t) uid, | |
1904 | XFS_DQ_USER, | |
1905 | XFS_QMOPT_DQALLOC | | |
1906 | XFS_QMOPT_DOWARN, | |
1907 | &uq))) { | |
1908 | ASSERT(error != ENOENT); | |
014c2544 | 1909 | return error; |
1da177e4 LT |
1910 | } |
1911 | /* | |
1912 | * Get the ilock in the right order. | |
1913 | */ | |
1914 | xfs_dqunlock(uq); | |
1915 | lockflags = XFS_ILOCK_SHARED; | |
1916 | xfs_ilock(ip, lockflags); | |
1917 | } else { | |
1918 | /* | |
1919 | * Take an extra reference, because we'll return | |
1920 | * this to caller | |
1921 | */ | |
1922 | ASSERT(ip->i_udquot); | |
78e55892 | 1923 | uq = xfs_qm_dqhold(ip->i_udquot); |
1da177e4 LT |
1924 | } |
1925 | } | |
c8ad20ff | 1926 | if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { |
1da177e4 LT |
1927 | if (ip->i_d.di_gid != gid) { |
1928 | xfs_iunlock(ip, lockflags); | |
1929 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)gid, | |
1930 | XFS_DQ_GROUP, | |
1931 | XFS_QMOPT_DQALLOC | | |
1932 | XFS_QMOPT_DOWARN, | |
1933 | &gq))) { | |
1934 | if (uq) | |
1935 | xfs_qm_dqrele(uq); | |
1936 | ASSERT(error != ENOENT); | |
014c2544 | 1937 | return error; |
1da177e4 LT |
1938 | } |
1939 | xfs_dqunlock(gq); | |
1940 | lockflags = XFS_ILOCK_SHARED; | |
1941 | xfs_ilock(ip, lockflags); | |
1942 | } else { | |
1943 | ASSERT(ip->i_gdquot); | |
78e55892 | 1944 | gq = xfs_qm_dqhold(ip->i_gdquot); |
1da177e4 | 1945 | } |
c8ad20ff | 1946 | } else if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { |
6743099c | 1947 | if (xfs_get_projid(ip) != prid) { |
c8ad20ff NS |
1948 | xfs_iunlock(ip, lockflags); |
1949 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, | |
1950 | XFS_DQ_PROJ, | |
1951 | XFS_QMOPT_DQALLOC | | |
1952 | XFS_QMOPT_DOWARN, | |
1953 | &gq))) { | |
1954 | if (uq) | |
1955 | xfs_qm_dqrele(uq); | |
1956 | ASSERT(error != ENOENT); | |
1957 | return (error); | |
1958 | } | |
1959 | xfs_dqunlock(gq); | |
1960 | lockflags = XFS_ILOCK_SHARED; | |
1961 | xfs_ilock(ip, lockflags); | |
1962 | } else { | |
1963 | ASSERT(ip->i_gdquot); | |
78e55892 | 1964 | gq = xfs_qm_dqhold(ip->i_gdquot); |
c8ad20ff | 1965 | } |
1da177e4 LT |
1966 | } |
1967 | if (uq) | |
0b1b213f | 1968 | trace_xfs_dquot_dqalloc(ip); |
1da177e4 LT |
1969 | |
1970 | xfs_iunlock(ip, lockflags); | |
1971 | if (O_udqpp) | |
1972 | *O_udqpp = uq; | |
1973 | else if (uq) | |
1974 | xfs_qm_dqrele(uq); | |
1975 | if (O_gdqpp) | |
1976 | *O_gdqpp = gq; | |
1977 | else if (gq) | |
1978 | xfs_qm_dqrele(gq); | |
014c2544 | 1979 | return 0; |
1da177e4 LT |
1980 | } |
1981 | ||
1982 | /* | |
1983 | * Actually transfer ownership, and do dquot modifications. | |
1984 | * These were already reserved. | |
1985 | */ | |
1986 | xfs_dquot_t * | |
1987 | xfs_qm_vop_chown( | |
1988 | xfs_trans_t *tp, | |
1989 | xfs_inode_t *ip, | |
1990 | xfs_dquot_t **IO_olddq, | |
1991 | xfs_dquot_t *newdq) | |
1992 | { | |
1993 | xfs_dquot_t *prevdq; | |
06d10dd9 NS |
1994 | uint bfield = XFS_IS_REALTIME_INODE(ip) ? |
1995 | XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; | |
1996 | ||
7d095257 | 1997 | |
579aa9ca | 1998 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
1999 | ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); |
2000 | ||
2001 | /* old dquot */ | |
2002 | prevdq = *IO_olddq; | |
2003 | ASSERT(prevdq); | |
2004 | ASSERT(prevdq != newdq); | |
2005 | ||
06d10dd9 NS |
2006 | xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks)); |
2007 | xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); | |
1da177e4 LT |
2008 | |
2009 | /* the sparkling new dquot */ | |
06d10dd9 NS |
2010 | xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks); |
2011 | xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); | |
1da177e4 LT |
2012 | |
2013 | /* | |
78e55892 CH |
2014 | * Take an extra reference, because the inode is going to keep |
2015 | * this dquot pointer even after the trans_commit. | |
1da177e4 | 2016 | */ |
78e55892 | 2017 | *IO_olddq = xfs_qm_dqhold(newdq); |
1da177e4 | 2018 | |
014c2544 | 2019 | return prevdq; |
1da177e4 LT |
2020 | } |
2021 | ||
2022 | /* | |
c8ad20ff | 2023 | * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID). |
1da177e4 LT |
2024 | */ |
2025 | int | |
2026 | xfs_qm_vop_chown_reserve( | |
2027 | xfs_trans_t *tp, | |
2028 | xfs_inode_t *ip, | |
2029 | xfs_dquot_t *udqp, | |
2030 | xfs_dquot_t *gdqp, | |
2031 | uint flags) | |
2032 | { | |
7d095257 | 2033 | xfs_mount_t *mp = ip->i_mount; |
9a2a7de2 | 2034 | uint delblks, blkflags, prjflags = 0; |
1da177e4 | 2035 | xfs_dquot_t *unresudq, *unresgdq, *delblksudq, *delblksgdq; |
7d095257 CH |
2036 | int error; |
2037 | ||
1da177e4 | 2038 | |
579aa9ca | 2039 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); |
1da177e4 LT |
2040 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
2041 | ||
2042 | delblks = ip->i_delayed_blks; | |
2043 | delblksudq = delblksgdq = unresudq = unresgdq = NULL; | |
06d10dd9 NS |
2044 | blkflags = XFS_IS_REALTIME_INODE(ip) ? |
2045 | XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS; | |
1da177e4 LT |
2046 | |
2047 | if (XFS_IS_UQUOTA_ON(mp) && udqp && | |
1149d96a | 2048 | ip->i_d.di_uid != (uid_t)be32_to_cpu(udqp->q_core.d_id)) { |
1da177e4 LT |
2049 | delblksudq = udqp; |
2050 | /* | |
2051 | * If there are delayed allocation blocks, then we have to | |
2052 | * unreserve those from the old dquot, and add them to the | |
2053 | * new dquot. | |
2054 | */ | |
2055 | if (delblks) { | |
2056 | ASSERT(ip->i_udquot); | |
2057 | unresudq = ip->i_udquot; | |
2058 | } | |
2059 | } | |
c8ad20ff | 2060 | if (XFS_IS_OQUOTA_ON(ip->i_mount) && gdqp) { |
9a2a7de2 | 2061 | if (XFS_IS_PQUOTA_ON(ip->i_mount) && |
6743099c | 2062 | xfs_get_projid(ip) != be32_to_cpu(gdqp->q_core.d_id)) |
9a2a7de2 NS |
2063 | prjflags = XFS_QMOPT_ENOSPC; |
2064 | ||
2065 | if (prjflags || | |
2066 | (XFS_IS_GQUOTA_ON(ip->i_mount) && | |
2067 | ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id))) { | |
c8ad20ff NS |
2068 | delblksgdq = gdqp; |
2069 | if (delblks) { | |
2070 | ASSERT(ip->i_gdquot); | |
2071 | unresgdq = ip->i_gdquot; | |
2072 | } | |
1da177e4 LT |
2073 | } |
2074 | } | |
2075 | ||
2076 | if ((error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, | |
2077 | delblksudq, delblksgdq, ip->i_d.di_nblocks, 1, | |
9a2a7de2 | 2078 | flags | blkflags | prjflags))) |
1da177e4 LT |
2079 | return (error); |
2080 | ||
2081 | /* | |
2082 | * Do the delayed blks reservations/unreservations now. Since, these | |
2083 | * are done without the help of a transaction, if a reservation fails | |
2084 | * its previous reservations won't be automatically undone by trans | |
2085 | * code. So, we have to do it manually here. | |
2086 | */ | |
2087 | if (delblks) { | |
2088 | /* | |
2089 | * Do the reservations first. Unreservation can't fail. | |
2090 | */ | |
2091 | ASSERT(delblksudq || delblksgdq); | |
2092 | ASSERT(unresudq || unresgdq); | |
2093 | if ((error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
2094 | delblksudq, delblksgdq, (xfs_qcnt_t)delblks, 0, | |
9a2a7de2 | 2095 | flags | blkflags | prjflags))) |
1da177e4 LT |
2096 | return (error); |
2097 | xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
2098 | unresudq, unresgdq, -((xfs_qcnt_t)delblks), 0, | |
06d10dd9 | 2099 | blkflags); |
1da177e4 LT |
2100 | } |
2101 | ||
2102 | return (0); | |
2103 | } | |
2104 | ||
2105 | int | |
2106 | xfs_qm_vop_rename_dqattach( | |
7d095257 | 2107 | struct xfs_inode **i_tab) |
1da177e4 | 2108 | { |
7d095257 CH |
2109 | struct xfs_mount *mp = i_tab[0]->i_mount; |
2110 | int i; | |
1da177e4 | 2111 | |
7d095257 | 2112 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
014c2544 | 2113 | return 0; |
1da177e4 | 2114 | |
7d095257 CH |
2115 | for (i = 0; (i < 4 && i_tab[i]); i++) { |
2116 | struct xfs_inode *ip = i_tab[i]; | |
2117 | int error; | |
2118 | ||
1da177e4 LT |
2119 | /* |
2120 | * Watch out for duplicate entries in the table. | |
2121 | */ | |
7d095257 CH |
2122 | if (i == 0 || ip != i_tab[i-1]) { |
2123 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
1da177e4 LT |
2124 | error = xfs_qm_dqattach(ip, 0); |
2125 | if (error) | |
014c2544 | 2126 | return error; |
1da177e4 LT |
2127 | } |
2128 | } | |
2129 | } | |
014c2544 | 2130 | return 0; |
1da177e4 LT |
2131 | } |
2132 | ||
2133 | void | |
7d095257 CH |
2134 | xfs_qm_vop_create_dqattach( |
2135 | struct xfs_trans *tp, | |
2136 | struct xfs_inode *ip, | |
2137 | struct xfs_dquot *udqp, | |
2138 | struct xfs_dquot *gdqp) | |
1da177e4 | 2139 | { |
7d095257 CH |
2140 | struct xfs_mount *mp = tp->t_mountp; |
2141 | ||
2142 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) | |
1da177e4 LT |
2143 | return; |
2144 | ||
579aa9ca | 2145 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
7d095257 | 2146 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1da177e4 LT |
2147 | |
2148 | if (udqp) { | |
1da177e4 | 2149 | ASSERT(ip->i_udquot == NULL); |
7d095257 | 2150 | ASSERT(XFS_IS_UQUOTA_ON(mp)); |
1149d96a | 2151 | ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id)); |
78e55892 CH |
2152 | |
2153 | ip->i_udquot = xfs_qm_dqhold(udqp); | |
1da177e4 LT |
2154 | xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); |
2155 | } | |
2156 | if (gdqp) { | |
1da177e4 | 2157 | ASSERT(ip->i_gdquot == NULL); |
7d095257 CH |
2158 | ASSERT(XFS_IS_OQUOTA_ON(mp)); |
2159 | ASSERT((XFS_IS_GQUOTA_ON(mp) ? | |
6743099c | 2160 | ip->i_d.di_gid : xfs_get_projid(ip)) == |
ee2a4f7c | 2161 | be32_to_cpu(gdqp->q_core.d_id)); |
78e55892 CH |
2162 | |
2163 | ip->i_gdquot = xfs_qm_dqhold(gdqp); | |
1da177e4 LT |
2164 | xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); |
2165 | } | |
2166 | } | |
2167 |