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1da177e4 | 1 | /* |
4ce3121f NS |
2 | * Copyright (c) 2000-2002 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 LT |
26 | #include "xfs_dir2.h" |
27 | #include "xfs_alloc.h" | |
28 | #include "xfs_dmapi.h" | |
29 | #include "xfs_quota.h" | |
30 | #include "xfs_mount.h" | |
1da177e4 | 31 | #include "xfs_bmap_btree.h" |
a844f451 | 32 | #include "xfs_alloc_btree.h" |
1da177e4 | 33 | #include "xfs_ialloc_btree.h" |
1da177e4 | 34 | #include "xfs_attr_sf.h" |
1da177e4 LT |
35 | #include "xfs_dir2_sf.h" |
36 | #include "xfs_dinode.h" | |
37 | #include "xfs_inode.h" | |
a844f451 NS |
38 | #include "xfs_ialloc.h" |
39 | #include "xfs_itable.h" | |
40 | #include "xfs_btree.h" | |
1da177e4 | 41 | #include "xfs_bmap.h" |
1da177e4 LT |
42 | #include "xfs_rtalloc.h" |
43 | #include "xfs_error.h" | |
1da177e4 LT |
44 | #include "xfs_rw.h" |
45 | #include "xfs_acl.h" | |
1da177e4 LT |
46 | #include "xfs_attr.h" |
47 | #include "xfs_buf_item.h" | |
48 | #include "xfs_trans_priv.h" | |
1da177e4 LT |
49 | #include "xfs_qm.h" |
50 | ||
51 | STATIC void xfs_trans_alloc_dqinfo(xfs_trans_t *); | |
52 | ||
53 | /* | |
54 | * Add the locked dquot to the transaction. | |
55 | * The dquot must be locked, and it cannot be associated with any | |
56 | * transaction. | |
57 | */ | |
58 | void | |
59 | xfs_trans_dqjoin( | |
60 | xfs_trans_t *tp, | |
61 | xfs_dquot_t *dqp) | |
62 | { | |
63 | xfs_dq_logitem_t *lp; | |
64 | ||
65 | ASSERT(! XFS_DQ_IS_ADDEDTO_TRX(tp, dqp)); | |
66 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); | |
67 | ASSERT(XFS_DQ_IS_LOGITEM_INITD(dqp)); | |
68 | lp = &dqp->q_logitem; | |
69 | ||
70 | /* | |
71 | * Get a log_item_desc to point at the new item. | |
72 | */ | |
73 | (void) xfs_trans_add_item(tp, (xfs_log_item_t*)(lp)); | |
74 | ||
75 | /* | |
76 | * Initialize i_transp so we can later determine if this dquot is | |
77 | * associated with this transaction. | |
78 | */ | |
79 | dqp->q_transp = tp; | |
80 | } | |
81 | ||
82 | ||
83 | /* | |
84 | * This is called to mark the dquot as needing | |
85 | * to be logged when the transaction is committed. The dquot must | |
86 | * already be associated with the given transaction. | |
87 | * Note that it marks the entire transaction as dirty. In the ordinary | |
88 | * case, this gets called via xfs_trans_commit, after the transaction | |
89 | * is already dirty. However, there's nothing stop this from getting | |
90 | * called directly, as done by xfs_qm_scall_setqlim. Hence, the TRANS_DIRTY | |
91 | * flag. | |
92 | */ | |
93 | void | |
94 | xfs_trans_log_dquot( | |
95 | xfs_trans_t *tp, | |
96 | xfs_dquot_t *dqp) | |
97 | { | |
98 | xfs_log_item_desc_t *lidp; | |
99 | ||
100 | ASSERT(XFS_DQ_IS_ADDEDTO_TRX(tp, dqp)); | |
101 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); | |
102 | ||
103 | lidp = xfs_trans_find_item(tp, (xfs_log_item_t*)(&dqp->q_logitem)); | |
104 | ASSERT(lidp != NULL); | |
105 | ||
106 | tp->t_flags |= XFS_TRANS_DIRTY; | |
107 | lidp->lid_flags |= XFS_LID_DIRTY; | |
108 | } | |
109 | ||
110 | /* | |
111 | * Carry forward whatever is left of the quota blk reservation to | |
112 | * the spanky new transaction | |
113 | */ | |
114 | STATIC void | |
115 | xfs_trans_dup_dqinfo( | |
116 | xfs_trans_t *otp, | |
117 | xfs_trans_t *ntp) | |
118 | { | |
119 | xfs_dqtrx_t *oq, *nq; | |
120 | int i,j; | |
121 | xfs_dqtrx_t *oqa, *nqa; | |
122 | ||
123 | if (!otp->t_dqinfo) | |
124 | return; | |
125 | ||
126 | xfs_trans_alloc_dqinfo(ntp); | |
127 | oqa = otp->t_dqinfo->dqa_usrdquots; | |
128 | nqa = ntp->t_dqinfo->dqa_usrdquots; | |
129 | ||
130 | /* | |
131 | * Because the quota blk reservation is carried forward, | |
132 | * it is also necessary to carry forward the DQ_DIRTY flag. | |
133 | */ | |
134 | if(otp->t_flags & XFS_TRANS_DQ_DIRTY) | |
135 | ntp->t_flags |= XFS_TRANS_DQ_DIRTY; | |
136 | ||
137 | for (j = 0; j < 2; j++) { | |
138 | for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { | |
139 | if (oqa[i].qt_dquot == NULL) | |
140 | break; | |
141 | oq = &oqa[i]; | |
142 | nq = &nqa[i]; | |
143 | ||
144 | nq->qt_dquot = oq->qt_dquot; | |
145 | nq->qt_bcount_delta = nq->qt_icount_delta = 0; | |
146 | nq->qt_rtbcount_delta = 0; | |
147 | ||
148 | /* | |
149 | * Transfer whatever is left of the reservations. | |
150 | */ | |
151 | nq->qt_blk_res = oq->qt_blk_res - oq->qt_blk_res_used; | |
152 | oq->qt_blk_res = oq->qt_blk_res_used; | |
153 | ||
154 | nq->qt_rtblk_res = oq->qt_rtblk_res - | |
155 | oq->qt_rtblk_res_used; | |
156 | oq->qt_rtblk_res = oq->qt_rtblk_res_used; | |
157 | ||
158 | nq->qt_ino_res = oq->qt_ino_res - oq->qt_ino_res_used; | |
159 | oq->qt_ino_res = oq->qt_ino_res_used; | |
160 | ||
161 | } | |
162 | oqa = otp->t_dqinfo->dqa_grpdquots; | |
163 | nqa = ntp->t_dqinfo->dqa_grpdquots; | |
164 | } | |
165 | } | |
166 | ||
167 | /* | |
168 | * Wrap around mod_dquot to account for both user and group quotas. | |
169 | */ | |
ba0f32d4 | 170 | STATIC void |
1da177e4 LT |
171 | xfs_trans_mod_dquot_byino( |
172 | xfs_trans_t *tp, | |
173 | xfs_inode_t *ip, | |
174 | uint field, | |
175 | long delta) | |
176 | { | |
177 | xfs_mount_t *mp; | |
178 | ||
179 | ASSERT(tp); | |
180 | mp = tp->t_mountp; | |
181 | ||
182 | if (!XFS_IS_QUOTA_ON(mp) || | |
183 | ip->i_ino == mp->m_sb.sb_uquotino || | |
184 | ip->i_ino == mp->m_sb.sb_gquotino) | |
185 | return; | |
186 | ||
187 | if (tp->t_dqinfo == NULL) | |
188 | xfs_trans_alloc_dqinfo(tp); | |
189 | ||
c8ad20ff | 190 | if (XFS_IS_UQUOTA_ON(mp) && ip->i_udquot) |
1da177e4 | 191 | (void) xfs_trans_mod_dquot(tp, ip->i_udquot, field, delta); |
c8ad20ff | 192 | if (XFS_IS_OQUOTA_ON(mp) && ip->i_gdquot) |
1da177e4 | 193 | (void) xfs_trans_mod_dquot(tp, ip->i_gdquot, field, delta); |
1da177e4 LT |
194 | } |
195 | ||
196 | STATIC xfs_dqtrx_t * | |
197 | xfs_trans_get_dqtrx( | |
198 | xfs_trans_t *tp, | |
199 | xfs_dquot_t *dqp) | |
200 | { | |
201 | int i; | |
202 | xfs_dqtrx_t *qa; | |
203 | ||
204 | for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { | |
205 | qa = XFS_QM_DQP_TO_DQACCT(tp, dqp); | |
206 | ||
207 | if (qa[i].qt_dquot == NULL || | |
208 | qa[i].qt_dquot == dqp) { | |
209 | return (&qa[i]); | |
210 | } | |
211 | } | |
212 | ||
213 | return (NULL); | |
214 | } | |
215 | ||
216 | /* | |
217 | * Make the changes in the transaction structure. | |
218 | * The moral equivalent to xfs_trans_mod_sb(). | |
219 | * We don't touch any fields in the dquot, so we don't care | |
220 | * if it's locked or not (most of the time it won't be). | |
221 | */ | |
222 | void | |
223 | xfs_trans_mod_dquot( | |
224 | xfs_trans_t *tp, | |
225 | xfs_dquot_t *dqp, | |
226 | uint field, | |
227 | long delta) | |
228 | { | |
229 | xfs_dqtrx_t *qtrx; | |
230 | ||
231 | ASSERT(tp); | |
232 | qtrx = NULL; | |
233 | ||
234 | if (tp->t_dqinfo == NULL) | |
235 | xfs_trans_alloc_dqinfo(tp); | |
236 | /* | |
237 | * Find either the first free slot or the slot that belongs | |
238 | * to this dquot. | |
239 | */ | |
240 | qtrx = xfs_trans_get_dqtrx(tp, dqp); | |
241 | ASSERT(qtrx); | |
242 | if (qtrx->qt_dquot == NULL) | |
243 | qtrx->qt_dquot = dqp; | |
244 | ||
245 | switch (field) { | |
246 | ||
247 | /* | |
248 | * regular disk blk reservation | |
249 | */ | |
250 | case XFS_TRANS_DQ_RES_BLKS: | |
251 | qtrx->qt_blk_res += (ulong)delta; | |
252 | break; | |
253 | ||
254 | /* | |
255 | * inode reservation | |
256 | */ | |
257 | case XFS_TRANS_DQ_RES_INOS: | |
258 | qtrx->qt_ino_res += (ulong)delta; | |
259 | break; | |
260 | ||
261 | /* | |
262 | * disk blocks used. | |
263 | */ | |
264 | case XFS_TRANS_DQ_BCOUNT: | |
265 | if (qtrx->qt_blk_res && delta > 0) { | |
266 | qtrx->qt_blk_res_used += (ulong)delta; | |
267 | ASSERT(qtrx->qt_blk_res >= qtrx->qt_blk_res_used); | |
268 | } | |
269 | qtrx->qt_bcount_delta += delta; | |
270 | break; | |
271 | ||
272 | case XFS_TRANS_DQ_DELBCOUNT: | |
273 | qtrx->qt_delbcnt_delta += delta; | |
274 | break; | |
275 | ||
276 | /* | |
277 | * Inode Count | |
278 | */ | |
279 | case XFS_TRANS_DQ_ICOUNT: | |
280 | if (qtrx->qt_ino_res && delta > 0) { | |
281 | qtrx->qt_ino_res_used += (ulong)delta; | |
282 | ASSERT(qtrx->qt_ino_res >= qtrx->qt_ino_res_used); | |
283 | } | |
284 | qtrx->qt_icount_delta += delta; | |
285 | break; | |
286 | ||
287 | /* | |
288 | * rtblk reservation | |
289 | */ | |
290 | case XFS_TRANS_DQ_RES_RTBLKS: | |
291 | qtrx->qt_rtblk_res += (ulong)delta; | |
292 | break; | |
293 | ||
294 | /* | |
295 | * rtblk count | |
296 | */ | |
297 | case XFS_TRANS_DQ_RTBCOUNT: | |
298 | if (qtrx->qt_rtblk_res && delta > 0) { | |
299 | qtrx->qt_rtblk_res_used += (ulong)delta; | |
300 | ASSERT(qtrx->qt_rtblk_res >= qtrx->qt_rtblk_res_used); | |
301 | } | |
302 | qtrx->qt_rtbcount_delta += delta; | |
303 | break; | |
304 | ||
305 | case XFS_TRANS_DQ_DELRTBCOUNT: | |
306 | qtrx->qt_delrtb_delta += delta; | |
307 | break; | |
308 | ||
309 | default: | |
310 | ASSERT(0); | |
311 | } | |
312 | tp->t_flags |= XFS_TRANS_DQ_DIRTY; | |
313 | } | |
314 | ||
315 | ||
316 | /* | |
317 | * Given an array of dqtrx structures, lock all the dquots associated | |
318 | * and join them to the transaction, provided they have been modified. | |
319 | * We know that the highest number of dquots (of one type - usr OR grp), | |
320 | * involved in a transaction is 2 and that both usr and grp combined - 3. | |
321 | * So, we don't attempt to make this very generic. | |
322 | */ | |
323 | STATIC void | |
324 | xfs_trans_dqlockedjoin( | |
325 | xfs_trans_t *tp, | |
326 | xfs_dqtrx_t *q) | |
327 | { | |
328 | ASSERT(q[0].qt_dquot != NULL); | |
329 | if (q[1].qt_dquot == NULL) { | |
330 | xfs_dqlock(q[0].qt_dquot); | |
331 | xfs_trans_dqjoin(tp, q[0].qt_dquot); | |
332 | } else { | |
333 | ASSERT(XFS_QM_TRANS_MAXDQS == 2); | |
334 | xfs_dqlock2(q[0].qt_dquot, q[1].qt_dquot); | |
335 | xfs_trans_dqjoin(tp, q[0].qt_dquot); | |
336 | xfs_trans_dqjoin(tp, q[1].qt_dquot); | |
337 | } | |
338 | } | |
339 | ||
340 | ||
341 | /* | |
342 | * Called by xfs_trans_commit() and similar in spirit to | |
343 | * xfs_trans_apply_sb_deltas(). | |
344 | * Go thru all the dquots belonging to this transaction and modify the | |
345 | * INCORE dquot to reflect the actual usages. | |
346 | * Unreserve just the reservations done by this transaction. | |
347 | * dquot is still left locked at exit. | |
348 | */ | |
ba0f32d4 | 349 | STATIC void |
1da177e4 LT |
350 | xfs_trans_apply_dquot_deltas( |
351 | xfs_trans_t *tp) | |
352 | { | |
353 | int i, j; | |
354 | xfs_dquot_t *dqp; | |
355 | xfs_dqtrx_t *qtrx, *qa; | |
356 | xfs_disk_dquot_t *d; | |
357 | long totalbdelta; | |
358 | long totalrtbdelta; | |
359 | ||
360 | if (! (tp->t_flags & XFS_TRANS_DQ_DIRTY)) | |
361 | return; | |
362 | ||
363 | ASSERT(tp->t_dqinfo); | |
364 | qa = tp->t_dqinfo->dqa_usrdquots; | |
365 | for (j = 0; j < 2; j++) { | |
366 | if (qa[0].qt_dquot == NULL) { | |
367 | qa = tp->t_dqinfo->dqa_grpdquots; | |
368 | continue; | |
369 | } | |
370 | ||
371 | /* | |
372 | * Lock all of the dquots and join them to the transaction. | |
373 | */ | |
374 | xfs_trans_dqlockedjoin(tp, qa); | |
375 | ||
376 | for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { | |
377 | qtrx = &qa[i]; | |
378 | /* | |
379 | * The array of dquots is filled | |
380 | * sequentially, not sparsely. | |
381 | */ | |
382 | if ((dqp = qtrx->qt_dquot) == NULL) | |
383 | break; | |
384 | ||
385 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); | |
386 | ASSERT(XFS_DQ_IS_ADDEDTO_TRX(tp, dqp)); | |
387 | ||
388 | /* | |
389 | * adjust the actual number of blocks used | |
390 | */ | |
391 | d = &dqp->q_core; | |
392 | ||
393 | /* | |
394 | * The issue here is - sometimes we don't make a blkquota | |
395 | * reservation intentionally to be fair to users | |
396 | * (when the amount is small). On the other hand, | |
397 | * delayed allocs do make reservations, but that's | |
398 | * outside of a transaction, so we have no | |
399 | * idea how much was really reserved. | |
400 | * So, here we've accumulated delayed allocation blks and | |
401 | * non-delay blks. The assumption is that the | |
402 | * delayed ones are always reserved (outside of a | |
403 | * transaction), and the others may or may not have | |
404 | * quota reservations. | |
405 | */ | |
406 | totalbdelta = qtrx->qt_bcount_delta + | |
407 | qtrx->qt_delbcnt_delta; | |
408 | totalrtbdelta = qtrx->qt_rtbcount_delta + | |
409 | qtrx->qt_delrtb_delta; | |
410 | #ifdef QUOTADEBUG | |
411 | if (totalbdelta < 0) | |
1149d96a | 412 | ASSERT(be64_to_cpu(d->d_bcount) >= |
1da177e4 LT |
413 | (xfs_qcnt_t) -totalbdelta); |
414 | ||
415 | if (totalrtbdelta < 0) | |
1149d96a | 416 | ASSERT(be64_to_cpu(d->d_rtbcount) >= |
1da177e4 LT |
417 | (xfs_qcnt_t) -totalrtbdelta); |
418 | ||
419 | if (qtrx->qt_icount_delta < 0) | |
1149d96a | 420 | ASSERT(be64_to_cpu(d->d_icount) >= |
1da177e4 LT |
421 | (xfs_qcnt_t) -qtrx->qt_icount_delta); |
422 | #endif | |
423 | if (totalbdelta) | |
413d57c9 | 424 | be64_add_cpu(&d->d_bcount, (xfs_qcnt_t)totalbdelta); |
1da177e4 LT |
425 | |
426 | if (qtrx->qt_icount_delta) | |
413d57c9 | 427 | be64_add_cpu(&d->d_icount, (xfs_qcnt_t)qtrx->qt_icount_delta); |
1da177e4 LT |
428 | |
429 | if (totalrtbdelta) | |
413d57c9 | 430 | be64_add_cpu(&d->d_rtbcount, (xfs_qcnt_t)totalrtbdelta); |
1da177e4 LT |
431 | |
432 | /* | |
433 | * Get any default limits in use. | |
434 | * Start/reset the timer(s) if needed. | |
435 | */ | |
436 | if (d->d_id) { | |
437 | xfs_qm_adjust_dqlimits(tp->t_mountp, d); | |
438 | xfs_qm_adjust_dqtimers(tp->t_mountp, d); | |
439 | } | |
440 | ||
441 | dqp->dq_flags |= XFS_DQ_DIRTY; | |
442 | /* | |
443 | * add this to the list of items to get logged | |
444 | */ | |
445 | xfs_trans_log_dquot(tp, dqp); | |
446 | /* | |
447 | * Take off what's left of the original reservation. | |
448 | * In case of delayed allocations, there's no | |
449 | * reservation that a transaction structure knows of. | |
450 | */ | |
451 | if (qtrx->qt_blk_res != 0) { | |
452 | if (qtrx->qt_blk_res != qtrx->qt_blk_res_used) { | |
453 | if (qtrx->qt_blk_res > | |
454 | qtrx->qt_blk_res_used) | |
455 | dqp->q_res_bcount -= (xfs_qcnt_t) | |
456 | (qtrx->qt_blk_res - | |
457 | qtrx->qt_blk_res_used); | |
458 | else | |
459 | dqp->q_res_bcount -= (xfs_qcnt_t) | |
460 | (qtrx->qt_blk_res_used - | |
461 | qtrx->qt_blk_res); | |
462 | } | |
463 | } else { | |
464 | /* | |
465 | * These blks were never reserved, either inside | |
466 | * a transaction or outside one (in a delayed | |
467 | * allocation). Also, this isn't always a | |
468 | * negative number since we sometimes | |
469 | * deliberately skip quota reservations. | |
470 | */ | |
471 | if (qtrx->qt_bcount_delta) { | |
472 | dqp->q_res_bcount += | |
473 | (xfs_qcnt_t)qtrx->qt_bcount_delta; | |
474 | } | |
475 | } | |
476 | /* | |
477 | * Adjust the RT reservation. | |
478 | */ | |
479 | if (qtrx->qt_rtblk_res != 0) { | |
06d10dd9 | 480 | if (qtrx->qt_rtblk_res != qtrx->qt_rtblk_res_used) { |
1da177e4 LT |
481 | if (qtrx->qt_rtblk_res > |
482 | qtrx->qt_rtblk_res_used) | |
483 | dqp->q_res_rtbcount -= (xfs_qcnt_t) | |
484 | (qtrx->qt_rtblk_res - | |
485 | qtrx->qt_rtblk_res_used); | |
486 | else | |
487 | dqp->q_res_rtbcount -= (xfs_qcnt_t) | |
488 | (qtrx->qt_rtblk_res_used - | |
489 | qtrx->qt_rtblk_res); | |
490 | } | |
491 | } else { | |
492 | if (qtrx->qt_rtbcount_delta) | |
493 | dqp->q_res_rtbcount += | |
494 | (xfs_qcnt_t)qtrx->qt_rtbcount_delta; | |
495 | } | |
496 | ||
497 | /* | |
498 | * Adjust the inode reservation. | |
499 | */ | |
500 | if (qtrx->qt_ino_res != 0) { | |
501 | ASSERT(qtrx->qt_ino_res >= | |
502 | qtrx->qt_ino_res_used); | |
503 | if (qtrx->qt_ino_res > qtrx->qt_ino_res_used) | |
504 | dqp->q_res_icount -= (xfs_qcnt_t) | |
505 | (qtrx->qt_ino_res - | |
506 | qtrx->qt_ino_res_used); | |
507 | } else { | |
508 | if (qtrx->qt_icount_delta) | |
509 | dqp->q_res_icount += | |
510 | (xfs_qcnt_t)qtrx->qt_icount_delta; | |
511 | } | |
512 | ||
1da177e4 | 513 | ASSERT(dqp->q_res_bcount >= |
1149d96a | 514 | be64_to_cpu(dqp->q_core.d_bcount)); |
1da177e4 | 515 | ASSERT(dqp->q_res_icount >= |
1149d96a | 516 | be64_to_cpu(dqp->q_core.d_icount)); |
1da177e4 | 517 | ASSERT(dqp->q_res_rtbcount >= |
1149d96a | 518 | be64_to_cpu(dqp->q_core.d_rtbcount)); |
1da177e4 LT |
519 | } |
520 | /* | |
521 | * Do the group quotas next | |
522 | */ | |
523 | qa = tp->t_dqinfo->dqa_grpdquots; | |
524 | } | |
525 | } | |
526 | ||
527 | /* | |
528 | * Release the reservations, and adjust the dquots accordingly. | |
529 | * This is called only when the transaction is being aborted. If by | |
530 | * any chance we have done dquot modifications incore (ie. deltas) already, | |
531 | * we simply throw those away, since that's the expected behavior | |
532 | * when a transaction is curtailed without a commit. | |
533 | */ | |
534 | STATIC void | |
535 | xfs_trans_unreserve_and_mod_dquots( | |
536 | xfs_trans_t *tp) | |
537 | { | |
538 | int i, j; | |
539 | xfs_dquot_t *dqp; | |
540 | xfs_dqtrx_t *qtrx, *qa; | |
541 | boolean_t locked; | |
542 | ||
543 | if (!tp->t_dqinfo || !(tp->t_flags & XFS_TRANS_DQ_DIRTY)) | |
544 | return; | |
545 | ||
546 | qa = tp->t_dqinfo->dqa_usrdquots; | |
547 | ||
548 | for (j = 0; j < 2; j++) { | |
549 | for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { | |
550 | qtrx = &qa[i]; | |
551 | /* | |
552 | * We assume that the array of dquots is filled | |
553 | * sequentially, not sparsely. | |
554 | */ | |
555 | if ((dqp = qtrx->qt_dquot) == NULL) | |
556 | break; | |
557 | /* | |
558 | * Unreserve the original reservation. We don't care | |
559 | * about the number of blocks used field, or deltas. | |
560 | * Also we don't bother to zero the fields. | |
561 | */ | |
562 | locked = B_FALSE; | |
563 | if (qtrx->qt_blk_res) { | |
564 | xfs_dqlock(dqp); | |
565 | locked = B_TRUE; | |
566 | dqp->q_res_bcount -= | |
567 | (xfs_qcnt_t)qtrx->qt_blk_res; | |
568 | } | |
569 | if (qtrx->qt_ino_res) { | |
570 | if (!locked) { | |
571 | xfs_dqlock(dqp); | |
572 | locked = B_TRUE; | |
573 | } | |
574 | dqp->q_res_icount -= | |
575 | (xfs_qcnt_t)qtrx->qt_ino_res; | |
576 | } | |
577 | ||
578 | if (qtrx->qt_rtblk_res) { | |
579 | if (!locked) { | |
580 | xfs_dqlock(dqp); | |
581 | locked = B_TRUE; | |
582 | } | |
583 | dqp->q_res_rtbcount -= | |
584 | (xfs_qcnt_t)qtrx->qt_rtblk_res; | |
585 | } | |
586 | if (locked) | |
587 | xfs_dqunlock(dqp); | |
588 | ||
589 | } | |
590 | qa = tp->t_dqinfo->dqa_grpdquots; | |
591 | } | |
592 | } | |
593 | ||
9a2a7de2 NS |
594 | STATIC int |
595 | xfs_quota_error(uint flags) | |
596 | { | |
597 | if (flags & XFS_QMOPT_ENOSPC) | |
598 | return ENOSPC; | |
599 | return EDQUOT; | |
600 | } | |
601 | ||
1da177e4 LT |
602 | /* |
603 | * This reserves disk blocks and inodes against a dquot. | |
604 | * Flags indicate if the dquot is to be locked here and also | |
605 | * if the blk reservation is for RT or regular blocks. | |
606 | * Sending in XFS_QMOPT_FORCE_RES flag skips the quota check. | |
1da177e4 LT |
607 | */ |
608 | STATIC int | |
609 | xfs_trans_dqresv( | |
610 | xfs_trans_t *tp, | |
611 | xfs_mount_t *mp, | |
612 | xfs_dquot_t *dqp, | |
613 | long nblks, | |
614 | long ninos, | |
615 | uint flags) | |
616 | { | |
617 | int error; | |
618 | xfs_qcnt_t hardlimit; | |
619 | xfs_qcnt_t softlimit; | |
06d10dd9 NS |
620 | time_t timer; |
621 | xfs_qwarncnt_t warns; | |
622 | xfs_qwarncnt_t warnlimit; | |
623 | xfs_qcnt_t count; | |
1da177e4 LT |
624 | xfs_qcnt_t *resbcountp; |
625 | xfs_quotainfo_t *q = mp->m_quotainfo; | |
626 | ||
8e9b6e7f CH |
627 | |
628 | xfs_dqlock(dqp); | |
629 | ||
1da177e4 | 630 | if (flags & XFS_TRANS_DQ_RES_BLKS) { |
1149d96a | 631 | hardlimit = be64_to_cpu(dqp->q_core.d_blk_hardlimit); |
1da177e4 LT |
632 | if (!hardlimit) |
633 | hardlimit = q->qi_bhardlimit; | |
1149d96a | 634 | softlimit = be64_to_cpu(dqp->q_core.d_blk_softlimit); |
1da177e4 LT |
635 | if (!softlimit) |
636 | softlimit = q->qi_bsoftlimit; | |
1149d96a CH |
637 | timer = be32_to_cpu(dqp->q_core.d_btimer); |
638 | warns = be16_to_cpu(dqp->q_core.d_bwarns); | |
06d10dd9 | 639 | warnlimit = XFS_QI_BWARNLIMIT(dqp->q_mount); |
1da177e4 LT |
640 | resbcountp = &dqp->q_res_bcount; |
641 | } else { | |
642 | ASSERT(flags & XFS_TRANS_DQ_RES_RTBLKS); | |
1149d96a | 643 | hardlimit = be64_to_cpu(dqp->q_core.d_rtb_hardlimit); |
1da177e4 LT |
644 | if (!hardlimit) |
645 | hardlimit = q->qi_rtbhardlimit; | |
1149d96a | 646 | softlimit = be64_to_cpu(dqp->q_core.d_rtb_softlimit); |
1da177e4 LT |
647 | if (!softlimit) |
648 | softlimit = q->qi_rtbsoftlimit; | |
1149d96a CH |
649 | timer = be32_to_cpu(dqp->q_core.d_rtbtimer); |
650 | warns = be16_to_cpu(dqp->q_core.d_rtbwarns); | |
06d10dd9 | 651 | warnlimit = XFS_QI_RTBWARNLIMIT(dqp->q_mount); |
1da177e4 LT |
652 | resbcountp = &dqp->q_res_rtbcount; |
653 | } | |
654 | error = 0; | |
655 | ||
656 | if ((flags & XFS_QMOPT_FORCE_RES) == 0 && | |
657 | dqp->q_core.d_id && | |
e6d29426 KO |
658 | ((XFS_IS_UQUOTA_ENFORCED(dqp->q_mount) && XFS_QM_ISUDQ(dqp)) || |
659 | (XFS_IS_OQUOTA_ENFORCED(dqp->q_mount) && | |
660 | (XFS_QM_ISPDQ(dqp) || XFS_QM_ISGDQ(dqp))))) { | |
1da177e4 LT |
661 | #ifdef QUOTADEBUG |
662 | cmn_err(CE_DEBUG, "BLK Res: nblks=%ld + resbcount=%Ld" | |
663 | " > hardlimit=%Ld?", nblks, *resbcountp, hardlimit); | |
664 | #endif | |
665 | if (nblks > 0) { | |
666 | /* | |
667 | * dquot is locked already. See if we'd go over the | |
668 | * hardlimit or exceed the timelimit if we allocate | |
669 | * nblks. | |
670 | */ | |
671 | if (hardlimit > 0ULL && | |
672 | (hardlimit <= nblks + *resbcountp)) { | |
9a2a7de2 | 673 | error = xfs_quota_error(flags); |
1da177e4 LT |
674 | goto error_return; |
675 | } | |
676 | ||
677 | if (softlimit > 0ULL && | |
678 | (softlimit <= nblks + *resbcountp)) { | |
06d10dd9 NS |
679 | if ((timer != 0 && get_seconds() > timer) || |
680 | (warns != 0 && warns >= warnlimit)) { | |
9a2a7de2 | 681 | error = xfs_quota_error(flags); |
1da177e4 LT |
682 | goto error_return; |
683 | } | |
684 | } | |
685 | } | |
686 | if (ninos > 0) { | |
1149d96a CH |
687 | count = be64_to_cpu(dqp->q_core.d_icount); |
688 | timer = be32_to_cpu(dqp->q_core.d_itimer); | |
689 | warns = be16_to_cpu(dqp->q_core.d_iwarns); | |
06d10dd9 | 690 | warnlimit = XFS_QI_IWARNLIMIT(dqp->q_mount); |
1149d96a | 691 | hardlimit = be64_to_cpu(dqp->q_core.d_ino_hardlimit); |
1da177e4 LT |
692 | if (!hardlimit) |
693 | hardlimit = q->qi_ihardlimit; | |
1149d96a | 694 | softlimit = be64_to_cpu(dqp->q_core.d_ino_softlimit); |
1da177e4 LT |
695 | if (!softlimit) |
696 | softlimit = q->qi_isoftlimit; | |
06d10dd9 | 697 | if (hardlimit > 0ULL && count >= hardlimit) { |
9a2a7de2 | 698 | error = xfs_quota_error(flags); |
1da177e4 | 699 | goto error_return; |
06d10dd9 | 700 | } else if (softlimit > 0ULL && count >= softlimit) { |
06d10dd9 NS |
701 | if ((timer != 0 && get_seconds() > timer) || |
702 | (warns != 0 && warns >= warnlimit)) { | |
9a2a7de2 | 703 | error = xfs_quota_error(flags); |
1da177e4 LT |
704 | goto error_return; |
705 | } | |
706 | } | |
707 | } | |
708 | } | |
709 | ||
710 | /* | |
711 | * Change the reservation, but not the actual usage. | |
712 | * Note that q_res_bcount = q_core.d_bcount + resv | |
713 | */ | |
714 | (*resbcountp) += (xfs_qcnt_t)nblks; | |
715 | if (ninos != 0) | |
716 | dqp->q_res_icount += (xfs_qcnt_t)ninos; | |
717 | ||
718 | /* | |
719 | * note the reservation amt in the trans struct too, | |
720 | * so that the transaction knows how much was reserved by | |
721 | * it against this particular dquot. | |
722 | * We don't do this when we are reserving for a delayed allocation, | |
723 | * because we don't have the luxury of a transaction envelope then. | |
724 | */ | |
725 | if (tp) { | |
726 | ASSERT(tp->t_dqinfo); | |
727 | ASSERT(flags & XFS_QMOPT_RESBLK_MASK); | |
728 | if (nblks != 0) | |
729 | xfs_trans_mod_dquot(tp, dqp, | |
730 | flags & XFS_QMOPT_RESBLK_MASK, | |
731 | nblks); | |
732 | if (ninos != 0) | |
733 | xfs_trans_mod_dquot(tp, dqp, | |
734 | XFS_TRANS_DQ_RES_INOS, | |
735 | ninos); | |
736 | } | |
1149d96a CH |
737 | ASSERT(dqp->q_res_bcount >= be64_to_cpu(dqp->q_core.d_bcount)); |
738 | ASSERT(dqp->q_res_rtbcount >= be64_to_cpu(dqp->q_core.d_rtbcount)); | |
739 | ASSERT(dqp->q_res_icount >= be64_to_cpu(dqp->q_core.d_icount)); | |
1da177e4 LT |
740 | |
741 | error_return: | |
8e9b6e7f CH |
742 | xfs_dqunlock(dqp); |
743 | return error; | |
1da177e4 LT |
744 | } |
745 | ||
746 | ||
747 | /* | |
9a2a7de2 | 748 | * Given dquot(s), make disk block and/or inode reservations against them. |
1da177e4 | 749 | * The fact that this does the reservation against both the usr and |
9a2a7de2 | 750 | * grp/prj quotas is important, because this follows a both-or-nothing |
1da177e4 LT |
751 | * approach. |
752 | * | |
8e9b6e7f | 753 | * flags = XFS_QMOPT_FORCE_RES evades limit enforcement. Used by chown. |
9a2a7de2 | 754 | * XFS_QMOPT_ENOSPC returns ENOSPC not EDQUOT. Used by pquota. |
1da177e4 LT |
755 | * XFS_TRANS_DQ_RES_BLKS reserves regular disk blocks |
756 | * XFS_TRANS_DQ_RES_RTBLKS reserves realtime disk blocks | |
757 | * dquots are unlocked on return, if they were not locked by caller. | |
758 | */ | |
759 | int | |
760 | xfs_trans_reserve_quota_bydquots( | |
761 | xfs_trans_t *tp, | |
762 | xfs_mount_t *mp, | |
763 | xfs_dquot_t *udqp, | |
764 | xfs_dquot_t *gdqp, | |
765 | long nblks, | |
766 | long ninos, | |
767 | uint flags) | |
768 | { | |
9a2a7de2 | 769 | int resvd = 0, error; |
1da177e4 | 770 | |
9a2a7de2 NS |
771 | if (!XFS_IS_QUOTA_ON(mp)) |
772 | return 0; | |
1da177e4 LT |
773 | |
774 | if (tp && tp->t_dqinfo == NULL) | |
775 | xfs_trans_alloc_dqinfo(tp); | |
776 | ||
777 | ASSERT(flags & XFS_QMOPT_RESBLK_MASK); | |
1da177e4 LT |
778 | |
779 | if (udqp) { | |
9a2a7de2 NS |
780 | error = xfs_trans_dqresv(tp, mp, udqp, nblks, ninos, |
781 | (flags & ~XFS_QMOPT_ENOSPC)); | |
782 | if (error) | |
783 | return error; | |
1da177e4 LT |
784 | resvd = 1; |
785 | } | |
786 | ||
787 | if (gdqp) { | |
9a2a7de2 NS |
788 | error = xfs_trans_dqresv(tp, mp, gdqp, nblks, ninos, flags); |
789 | if (error) { | |
1da177e4 LT |
790 | /* |
791 | * can't do it, so backout previous reservation | |
792 | */ | |
793 | if (resvd) { | |
794 | flags |= XFS_QMOPT_FORCE_RES; | |
795 | xfs_trans_dqresv(tp, mp, udqp, | |
796 | -nblks, -ninos, flags); | |
797 | } | |
9a2a7de2 | 798 | return error; |
1da177e4 LT |
799 | } |
800 | } | |
801 | ||
802 | /* | |
c41564b5 | 803 | * Didn't change anything critical, so, no need to log |
1da177e4 | 804 | */ |
9a2a7de2 | 805 | return 0; |
1da177e4 LT |
806 | } |
807 | ||
808 | ||
809 | /* | |
810 | * Lock the dquot and change the reservation if we can. | |
811 | * This doesn't change the actual usage, just the reservation. | |
812 | * The inode sent in is locked. | |
1da177e4 LT |
813 | */ |
814 | STATIC int | |
815 | xfs_trans_reserve_quota_nblks( | |
816 | xfs_trans_t *tp, | |
817 | xfs_mount_t *mp, | |
818 | xfs_inode_t *ip, | |
819 | long nblks, | |
820 | long ninos, | |
9a2a7de2 | 821 | uint flags) |
1da177e4 LT |
822 | { |
823 | int error; | |
824 | ||
825 | if (!XFS_IS_QUOTA_ON(mp)) | |
9a2a7de2 NS |
826 | return 0; |
827 | if (XFS_IS_PQUOTA_ON(mp)) | |
828 | flags |= XFS_QMOPT_ENOSPC; | |
1da177e4 LT |
829 | |
830 | ASSERT(ip->i_ino != mp->m_sb.sb_uquotino); | |
831 | ASSERT(ip->i_ino != mp->m_sb.sb_gquotino); | |
832 | ||
579aa9ca | 833 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 834 | ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); |
9a2a7de2 NS |
835 | ASSERT((flags & ~(XFS_QMOPT_FORCE_RES | XFS_QMOPT_ENOSPC)) == |
836 | XFS_TRANS_DQ_RES_RTBLKS || | |
837 | (flags & ~(XFS_QMOPT_FORCE_RES | XFS_QMOPT_ENOSPC)) == | |
838 | XFS_TRANS_DQ_RES_BLKS); | |
1da177e4 LT |
839 | |
840 | /* | |
841 | * Reserve nblks against these dquots, with trans as the mediator. | |
842 | */ | |
843 | error = xfs_trans_reserve_quota_bydquots(tp, mp, | |
844 | ip->i_udquot, ip->i_gdquot, | |
845 | nblks, ninos, | |
9a2a7de2 NS |
846 | flags); |
847 | return error; | |
1da177e4 LT |
848 | } |
849 | ||
850 | /* | |
851 | * This routine is called to allocate a quotaoff log item. | |
852 | */ | |
853 | xfs_qoff_logitem_t * | |
854 | xfs_trans_get_qoff_item( | |
855 | xfs_trans_t *tp, | |
856 | xfs_qoff_logitem_t *startqoff, | |
857 | uint flags) | |
858 | { | |
859 | xfs_qoff_logitem_t *q; | |
860 | ||
861 | ASSERT(tp != NULL); | |
862 | ||
863 | q = xfs_qm_qoff_logitem_init(tp->t_mountp, startqoff, flags); | |
864 | ASSERT(q != NULL); | |
865 | ||
866 | /* | |
867 | * Get a log_item_desc to point at the new item. | |
868 | */ | |
869 | (void) xfs_trans_add_item(tp, (xfs_log_item_t*)q); | |
870 | ||
871 | return (q); | |
872 | } | |
873 | ||
874 | ||
875 | /* | |
876 | * This is called to mark the quotaoff logitem as needing | |
877 | * to be logged when the transaction is committed. The logitem must | |
878 | * already be associated with the given transaction. | |
879 | */ | |
880 | void | |
881 | xfs_trans_log_quotaoff_item( | |
882 | xfs_trans_t *tp, | |
883 | xfs_qoff_logitem_t *qlp) | |
884 | { | |
885 | xfs_log_item_desc_t *lidp; | |
886 | ||
887 | lidp = xfs_trans_find_item(tp, (xfs_log_item_t *)qlp); | |
888 | ASSERT(lidp != NULL); | |
889 | ||
890 | tp->t_flags |= XFS_TRANS_DIRTY; | |
891 | lidp->lid_flags |= XFS_LID_DIRTY; | |
892 | } | |
893 | ||
894 | STATIC void | |
895 | xfs_trans_alloc_dqinfo( | |
896 | xfs_trans_t *tp) | |
897 | { | |
898 | (tp)->t_dqinfo = kmem_zone_zalloc(xfs_Gqm->qm_dqtrxzone, KM_SLEEP); | |
899 | } | |
900 | ||
901 | STATIC void | |
902 | xfs_trans_free_dqinfo( | |
903 | xfs_trans_t *tp) | |
904 | { | |
905 | if (!tp->t_dqinfo) | |
906 | return; | |
907 | kmem_zone_free(xfs_Gqm->qm_dqtrxzone, (tp)->t_dqinfo); | |
908 | (tp)->t_dqinfo = NULL; | |
909 | } | |
910 | ||
911 | xfs_dqtrxops_t xfs_trans_dquot_ops = { | |
912 | .qo_dup_dqinfo = xfs_trans_dup_dqinfo, | |
913 | .qo_free_dqinfo = xfs_trans_free_dqinfo, | |
914 | .qo_mod_dquot_byino = xfs_trans_mod_dquot_byino, | |
915 | .qo_apply_dquot_deltas = xfs_trans_apply_dquot_deltas, | |
916 | .qo_reserve_quota_nblks = xfs_trans_reserve_quota_nblks, | |
917 | .qo_reserve_quota_bydquots = xfs_trans_reserve_quota_bydquots, | |
918 | .qo_unreserve_and_mod_dquots = xfs_trans_unreserve_and_mod_dquots, | |
919 | }; |