1 /*
2 * Copyright (c) 2000-2002 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
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
7 * published by the Free Software Foundation.
8 *
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.
13 *
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
17 */
18 #include "xfs.h"
19 #include "xfs_fs.h"
20 #include "xfs_bit.h"
21 #include "xfs_log.h"
22 #include "xfs_inum.h"
23 #include "xfs_trans.h"
24 #include "xfs_sb.h"
25 #include "xfs_ag.h"
26 #include "xfs_alloc.h"
27 #include "xfs_quota.h"
28 #include "xfs_mount.h"
29 #include "xfs_bmap_btree.h"
30 #include "xfs_inode.h"
31 #include "xfs_itable.h"
32 #include "xfs_bmap.h"
33 #include "xfs_rtalloc.h"
34 #include "xfs_error.h"
35 #include "xfs_attr.h"
36 #include "xfs_buf_item.h"
37 #include "xfs_trans_priv.h"
38 #include "xfs_qm.h"
39
40 STATIC void xfs_trans_alloc_dqinfo(xfs_trans_t *);
41
42 /*
43 * Add the locked dquot to the transaction.
44 * The dquot must be locked, and it cannot be associated with any
45 * transaction.
46 */
47 void
xfs_trans_dqjoin(xfs_trans_t * tp,xfs_dquot_t * dqp)48 xfs_trans_dqjoin(
49 xfs_trans_t *tp,
50 xfs_dquot_t *dqp)
51 {
52 ASSERT(dqp->q_transp != tp);
53 ASSERT(XFS_DQ_IS_LOCKED(dqp));
54 ASSERT(dqp->q_logitem.qli_dquot == dqp);
55
56 /*
57 * Get a log_item_desc to point at the new item.
58 */
59 xfs_trans_add_item(tp, &dqp->q_logitem.qli_item);
60
61 /*
62 * Initialize i_transp so we can later determine if this dquot is
63 * associated with this transaction.
64 */
65 dqp->q_transp = tp;
66 }
67
68
69 /*
70 * This is called to mark the dquot as needing
71 * to be logged when the transaction is committed. The dquot must
72 * already be associated with the given transaction.
73 * Note that it marks the entire transaction as dirty. In the ordinary
74 * case, this gets called via xfs_trans_commit, after the transaction
75 * is already dirty. However, there's nothing stop this from getting
76 * called directly, as done by xfs_qm_scall_setqlim. Hence, the TRANS_DIRTY
77 * flag.
78 */
79 void
xfs_trans_log_dquot(xfs_trans_t * tp,xfs_dquot_t * dqp)80 xfs_trans_log_dquot(
81 xfs_trans_t *tp,
82 xfs_dquot_t *dqp)
83 {
84 ASSERT(dqp->q_transp == tp);
85 ASSERT(XFS_DQ_IS_LOCKED(dqp));
86
87 tp->t_flags |= XFS_TRANS_DIRTY;
88 dqp->q_logitem.qli_item.li_desc->lid_flags |= XFS_LID_DIRTY;
89 }
90
91 /*
92 * Carry forward whatever is left of the quota blk reservation to
93 * the spanky new transaction
94 */
95 void
xfs_trans_dup_dqinfo(xfs_trans_t * otp,xfs_trans_t * ntp)96 xfs_trans_dup_dqinfo(
97 xfs_trans_t *otp,
98 xfs_trans_t *ntp)
99 {
100 xfs_dqtrx_t *oq, *nq;
101 int i,j;
102 xfs_dqtrx_t *oqa, *nqa;
103
104 if (!otp->t_dqinfo)
105 return;
106
107 xfs_trans_alloc_dqinfo(ntp);
108 oqa = otp->t_dqinfo->dqa_usrdquots;
109 nqa = ntp->t_dqinfo->dqa_usrdquots;
110
111 /*
112 * Because the quota blk reservation is carried forward,
113 * it is also necessary to carry forward the DQ_DIRTY flag.
114 */
115 if(otp->t_flags & XFS_TRANS_DQ_DIRTY)
116 ntp->t_flags |= XFS_TRANS_DQ_DIRTY;
117
118 for (j = 0; j < 2; j++) {
119 for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) {
120 if (oqa[i].qt_dquot == NULL)
121 break;
122 oq = &oqa[i];
123 nq = &nqa[i];
124
125 nq->qt_dquot = oq->qt_dquot;
126 nq->qt_bcount_delta = nq->qt_icount_delta = 0;
127 nq->qt_rtbcount_delta = 0;
128
129 /*
130 * Transfer whatever is left of the reservations.
131 */
132 nq->qt_blk_res = oq->qt_blk_res - oq->qt_blk_res_used;
133 oq->qt_blk_res = oq->qt_blk_res_used;
134
135 nq->qt_rtblk_res = oq->qt_rtblk_res -
136 oq->qt_rtblk_res_used;
137 oq->qt_rtblk_res = oq->qt_rtblk_res_used;
138
139 nq->qt_ino_res = oq->qt_ino_res - oq->qt_ino_res_used;
140 oq->qt_ino_res = oq->qt_ino_res_used;
141
142 }
143 oqa = otp->t_dqinfo->dqa_grpdquots;
144 nqa = ntp->t_dqinfo->dqa_grpdquots;
145 }
146 }
147
148 /*
149 * Wrap around mod_dquot to account for both user and group quotas.
150 */
151 void
xfs_trans_mod_dquot_byino(xfs_trans_t * tp,xfs_inode_t * ip,uint field,long delta)152 xfs_trans_mod_dquot_byino(
153 xfs_trans_t *tp,
154 xfs_inode_t *ip,
155 uint field,
156 long delta)
157 {
158 xfs_mount_t *mp = tp->t_mountp;
159
160 if (!XFS_IS_QUOTA_RUNNING(mp) ||
161 !XFS_IS_QUOTA_ON(mp) ||
162 ip->i_ino == mp->m_sb.sb_uquotino ||
163 ip->i_ino == mp->m_sb.sb_gquotino)
164 return;
165
166 if (tp->t_dqinfo == NULL)
167 xfs_trans_alloc_dqinfo(tp);
168
169 if (XFS_IS_UQUOTA_ON(mp) && ip->i_udquot)
170 (void) xfs_trans_mod_dquot(tp, ip->i_udquot, field, delta);
171 if (XFS_IS_OQUOTA_ON(mp) && ip->i_gdquot)
172 (void) xfs_trans_mod_dquot(tp, ip->i_gdquot, field, delta);
173 }
174
175 STATIC xfs_dqtrx_t *
xfs_trans_get_dqtrx(xfs_trans_t * tp,xfs_dquot_t * dqp)176 xfs_trans_get_dqtrx(
177 xfs_trans_t *tp,
178 xfs_dquot_t *dqp)
179 {
180 int i;
181 xfs_dqtrx_t *qa;
182
183 qa = XFS_QM_ISUDQ(dqp) ?
184 tp->t_dqinfo->dqa_usrdquots : tp->t_dqinfo->dqa_grpdquots;
185
186 for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) {
187 if (qa[i].qt_dquot == NULL ||
188 qa[i].qt_dquot == dqp)
189 return &qa[i];
190 }
191
192 return NULL;
193 }
194
195 /*
196 * Make the changes in the transaction structure.
197 * The moral equivalent to xfs_trans_mod_sb().
198 * We don't touch any fields in the dquot, so we don't care
199 * if it's locked or not (most of the time it won't be).
200 */
201 void
xfs_trans_mod_dquot(xfs_trans_t * tp,xfs_dquot_t * dqp,uint field,long delta)202 xfs_trans_mod_dquot(
203 xfs_trans_t *tp,
204 xfs_dquot_t *dqp,
205 uint field,
206 long delta)
207 {
208 xfs_dqtrx_t *qtrx;
209
210 ASSERT(tp);
211 ASSERT(XFS_IS_QUOTA_RUNNING(tp->t_mountp));
212 qtrx = NULL;
213
214 if (tp->t_dqinfo == NULL)
215 xfs_trans_alloc_dqinfo(tp);
216 /*
217 * Find either the first free slot or the slot that belongs
218 * to this dquot.
219 */
220 qtrx = xfs_trans_get_dqtrx(tp, dqp);
221 ASSERT(qtrx);
222 if (qtrx->qt_dquot == NULL)
223 qtrx->qt_dquot = dqp;
224
225 switch (field) {
226
227 /*
228 * regular disk blk reservation
229 */
230 case XFS_TRANS_DQ_RES_BLKS:
231 qtrx->qt_blk_res += (ulong)delta;
232 break;
233
234 /*
235 * inode reservation
236 */
237 case XFS_TRANS_DQ_RES_INOS:
238 qtrx->qt_ino_res += (ulong)delta;
239 break;
240
241 /*
242 * disk blocks used.
243 */
244 case XFS_TRANS_DQ_BCOUNT:
245 if (qtrx->qt_blk_res && delta > 0) {
246 qtrx->qt_blk_res_used += (ulong)delta;
247 ASSERT(qtrx->qt_blk_res >= qtrx->qt_blk_res_used);
248 }
249 qtrx->qt_bcount_delta += delta;
250 break;
251
252 case XFS_TRANS_DQ_DELBCOUNT:
253 qtrx->qt_delbcnt_delta += delta;
254 break;
255
256 /*
257 * Inode Count
258 */
259 case XFS_TRANS_DQ_ICOUNT:
260 if (qtrx->qt_ino_res && delta > 0) {
261 qtrx->qt_ino_res_used += (ulong)delta;
262 ASSERT(qtrx->qt_ino_res >= qtrx->qt_ino_res_used);
263 }
264 qtrx->qt_icount_delta += delta;
265 break;
266
267 /*
268 * rtblk reservation
269 */
270 case XFS_TRANS_DQ_RES_RTBLKS:
271 qtrx->qt_rtblk_res += (ulong)delta;
272 break;
273
274 /*
275 * rtblk count
276 */
277 case XFS_TRANS_DQ_RTBCOUNT:
278 if (qtrx->qt_rtblk_res && delta > 0) {
279 qtrx->qt_rtblk_res_used += (ulong)delta;
280 ASSERT(qtrx->qt_rtblk_res >= qtrx->qt_rtblk_res_used);
281 }
282 qtrx->qt_rtbcount_delta += delta;
283 break;
284
285 case XFS_TRANS_DQ_DELRTBCOUNT:
286 qtrx->qt_delrtb_delta += delta;
287 break;
288
289 default:
290 ASSERT(0);
291 }
292 tp->t_flags |= XFS_TRANS_DQ_DIRTY;
293 }
294
295
296 /*
297 * Given an array of dqtrx structures, lock all the dquots associated
298 * and join them to the transaction, provided they have been modified.
299 * We know that the highest number of dquots (of one type - usr OR grp),
300 * involved in a transaction is 2 and that both usr and grp combined - 3.
301 * So, we don't attempt to make this very generic.
302 */
303 STATIC void
xfs_trans_dqlockedjoin(xfs_trans_t * tp,xfs_dqtrx_t * q)304 xfs_trans_dqlockedjoin(
305 xfs_trans_t *tp,
306 xfs_dqtrx_t *q)
307 {
308 ASSERT(q[0].qt_dquot != NULL);
309 if (q[1].qt_dquot == NULL) {
310 xfs_dqlock(q[0].qt_dquot);
311 xfs_trans_dqjoin(tp, q[0].qt_dquot);
312 } else {
313 ASSERT(XFS_QM_TRANS_MAXDQS == 2);
314 xfs_dqlock2(q[0].qt_dquot, q[1].qt_dquot);
315 xfs_trans_dqjoin(tp, q[0].qt_dquot);
316 xfs_trans_dqjoin(tp, q[1].qt_dquot);
317 }
318 }
319
320
321 /*
322 * Called by xfs_trans_commit() and similar in spirit to
323 * xfs_trans_apply_sb_deltas().
324 * Go thru all the dquots belonging to this transaction and modify the
325 * INCORE dquot to reflect the actual usages.
326 * Unreserve just the reservations done by this transaction.
327 * dquot is still left locked at exit.
328 */
329 void
xfs_trans_apply_dquot_deltas(xfs_trans_t * tp)330 xfs_trans_apply_dquot_deltas(
331 xfs_trans_t *tp)
332 {
333 int i, j;
334 xfs_dquot_t *dqp;
335 xfs_dqtrx_t *qtrx, *qa;
336 xfs_disk_dquot_t *d;
337 long totalbdelta;
338 long totalrtbdelta;
339
340 if (!(tp->t_flags & XFS_TRANS_DQ_DIRTY))
341 return;
342
343 ASSERT(tp->t_dqinfo);
344 qa = tp->t_dqinfo->dqa_usrdquots;
345 for (j = 0; j < 2; j++) {
346 if (qa[0].qt_dquot == NULL) {
347 qa = tp->t_dqinfo->dqa_grpdquots;
348 continue;
349 }
350
351 /*
352 * Lock all of the dquots and join them to the transaction.
353 */
354 xfs_trans_dqlockedjoin(tp, qa);
355
356 for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) {
357 qtrx = &qa[i];
358 /*
359 * The array of dquots is filled
360 * sequentially, not sparsely.
361 */
362 if ((dqp = qtrx->qt_dquot) == NULL)
363 break;
364
365 ASSERT(XFS_DQ_IS_LOCKED(dqp));
366 ASSERT(dqp->q_transp == tp);
367
368 /*
369 * adjust the actual number of blocks used
370 */
371 d = &dqp->q_core;
372
373 /*
374 * The issue here is - sometimes we don't make a blkquota
375 * reservation intentionally to be fair to users
376 * (when the amount is small). On the other hand,
377 * delayed allocs do make reservations, but that's
378 * outside of a transaction, so we have no
379 * idea how much was really reserved.
380 * So, here we've accumulated delayed allocation blks and
381 * non-delay blks. The assumption is that the
382 * delayed ones are always reserved (outside of a
383 * transaction), and the others may or may not have
384 * quota reservations.
385 */
386 totalbdelta = qtrx->qt_bcount_delta +
387 qtrx->qt_delbcnt_delta;
388 totalrtbdelta = qtrx->qt_rtbcount_delta +
389 qtrx->qt_delrtb_delta;
390 #ifdef QUOTADEBUG
391 if (totalbdelta < 0)
392 ASSERT(be64_to_cpu(d->d_bcount) >=
393 (xfs_qcnt_t) -totalbdelta);
394
395 if (totalrtbdelta < 0)
396 ASSERT(be64_to_cpu(d->d_rtbcount) >=
397 (xfs_qcnt_t) -totalrtbdelta);
398
399 if (qtrx->qt_icount_delta < 0)
400 ASSERT(be64_to_cpu(d->d_icount) >=
401 (xfs_qcnt_t) -qtrx->qt_icount_delta);
402 #endif
403 if (totalbdelta)
404 be64_add_cpu(&d->d_bcount, (xfs_qcnt_t)totalbdelta);
405
406 if (qtrx->qt_icount_delta)
407 be64_add_cpu(&d->d_icount, (xfs_qcnt_t)qtrx->qt_icount_delta);
408
409 if (totalrtbdelta)
410 be64_add_cpu(&d->d_rtbcount, (xfs_qcnt_t)totalrtbdelta);
411
412 /*
413 * Get any default limits in use.
414 * Start/reset the timer(s) if needed.
415 */
416 if (d->d_id) {
417 xfs_qm_adjust_dqlimits(tp->t_mountp, d);
418 xfs_qm_adjust_dqtimers(tp->t_mountp, d);
419 }
420
421 dqp->dq_flags |= XFS_DQ_DIRTY;
422 /*
423 * add this to the list of items to get logged
424 */
425 xfs_trans_log_dquot(tp, dqp);
426 /*
427 * Take off what's left of the original reservation.
428 * In case of delayed allocations, there's no
429 * reservation that a transaction structure knows of.
430 */
431 if (qtrx->qt_blk_res != 0) {
432 if (qtrx->qt_blk_res != qtrx->qt_blk_res_used) {
433 if (qtrx->qt_blk_res >
434 qtrx->qt_blk_res_used)
435 dqp->q_res_bcount -= (xfs_qcnt_t)
436 (qtrx->qt_blk_res -
437 qtrx->qt_blk_res_used);
438 else
439 dqp->q_res_bcount -= (xfs_qcnt_t)
440 (qtrx->qt_blk_res_used -
441 qtrx->qt_blk_res);
442 }
443 } else {
444 /*
445 * These blks were never reserved, either inside
446 * a transaction or outside one (in a delayed
447 * allocation). Also, this isn't always a
448 * negative number since we sometimes
449 * deliberately skip quota reservations.
450 */
451 if (qtrx->qt_bcount_delta) {
452 dqp->q_res_bcount +=
453 (xfs_qcnt_t)qtrx->qt_bcount_delta;
454 }
455 }
456 /*
457 * Adjust the RT reservation.
458 */
459 if (qtrx->qt_rtblk_res != 0) {
460 if (qtrx->qt_rtblk_res != qtrx->qt_rtblk_res_used) {
461 if (qtrx->qt_rtblk_res >
462 qtrx->qt_rtblk_res_used)
463 dqp->q_res_rtbcount -= (xfs_qcnt_t)
464 (qtrx->qt_rtblk_res -
465 qtrx->qt_rtblk_res_used);
466 else
467 dqp->q_res_rtbcount -= (xfs_qcnt_t)
468 (qtrx->qt_rtblk_res_used -
469 qtrx->qt_rtblk_res);
470 }
471 } else {
472 if (qtrx->qt_rtbcount_delta)
473 dqp->q_res_rtbcount +=
474 (xfs_qcnt_t)qtrx->qt_rtbcount_delta;
475 }
476
477 /*
478 * Adjust the inode reservation.
479 */
480 if (qtrx->qt_ino_res != 0) {
481 ASSERT(qtrx->qt_ino_res >=
482 qtrx->qt_ino_res_used);
483 if (qtrx->qt_ino_res > qtrx->qt_ino_res_used)
484 dqp->q_res_icount -= (xfs_qcnt_t)
485 (qtrx->qt_ino_res -
486 qtrx->qt_ino_res_used);
487 } else {
488 if (qtrx->qt_icount_delta)
489 dqp->q_res_icount +=
490 (xfs_qcnt_t)qtrx->qt_icount_delta;
491 }
492
493 ASSERT(dqp->q_res_bcount >=
494 be64_to_cpu(dqp->q_core.d_bcount));
495 ASSERT(dqp->q_res_icount >=
496 be64_to_cpu(dqp->q_core.d_icount));
497 ASSERT(dqp->q_res_rtbcount >=
498 be64_to_cpu(dqp->q_core.d_rtbcount));
499 }
500 /*
501 * Do the group quotas next
502 */
503 qa = tp->t_dqinfo->dqa_grpdquots;
504 }
505 }
506
507 /*
508 * Release the reservations, and adjust the dquots accordingly.
509 * This is called only when the transaction is being aborted. If by
510 * any chance we have done dquot modifications incore (ie. deltas) already,
511 * we simply throw those away, since that's the expected behavior
512 * when a transaction is curtailed without a commit.
513 */
514 void
xfs_trans_unreserve_and_mod_dquots(xfs_trans_t * tp)515 xfs_trans_unreserve_and_mod_dquots(
516 xfs_trans_t *tp)
517 {
518 int i, j;
519 xfs_dquot_t *dqp;
520 xfs_dqtrx_t *qtrx, *qa;
521 boolean_t locked;
522
523 if (!tp->t_dqinfo || !(tp->t_flags & XFS_TRANS_DQ_DIRTY))
524 return;
525
526 qa = tp->t_dqinfo->dqa_usrdquots;
527
528 for (j = 0; j < 2; j++) {
529 for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) {
530 qtrx = &qa[i];
531 /*
532 * We assume that the array of dquots is filled
533 * sequentially, not sparsely.
534 */
535 if ((dqp = qtrx->qt_dquot) == NULL)
536 break;
537 /*
538 * Unreserve the original reservation. We don't care
539 * about the number of blocks used field, or deltas.
540 * Also we don't bother to zero the fields.
541 */
542 locked = B_FALSE;
543 if (qtrx->qt_blk_res) {
544 xfs_dqlock(dqp);
545 locked = B_TRUE;
546 dqp->q_res_bcount -=
547 (xfs_qcnt_t)qtrx->qt_blk_res;
548 }
549 if (qtrx->qt_ino_res) {
550 if (!locked) {
551 xfs_dqlock(dqp);
552 locked = B_TRUE;
553 }
554 dqp->q_res_icount -=
555 (xfs_qcnt_t)qtrx->qt_ino_res;
556 }
557
558 if (qtrx->qt_rtblk_res) {
559 if (!locked) {
560 xfs_dqlock(dqp);
561 locked = B_TRUE;
562 }
563 dqp->q_res_rtbcount -=
564 (xfs_qcnt_t)qtrx->qt_rtblk_res;
565 }
566 if (locked)
567 xfs_dqunlock(dqp);
568
569 }
570 qa = tp->t_dqinfo->dqa_grpdquots;
571 }
572 }
573
574 STATIC void
xfs_quota_warn(struct xfs_mount * mp,struct xfs_dquot * dqp,int type)575 xfs_quota_warn(
576 struct xfs_mount *mp,
577 struct xfs_dquot *dqp,
578 int type)
579 {
580 /* no warnings for project quotas - we just return ENOSPC later */
581 if (dqp->dq_flags & XFS_DQ_PROJ)
582 return;
583 quota_send_warning((dqp->dq_flags & XFS_DQ_USER) ? USRQUOTA : GRPQUOTA,
584 be32_to_cpu(dqp->q_core.d_id), mp->m_super->s_dev,
585 type);
586 }
587
588 /*
589 * This reserves disk blocks and inodes against a dquot.
590 * Flags indicate if the dquot is to be locked here and also
591 * if the blk reservation is for RT or regular blocks.
592 * Sending in XFS_QMOPT_FORCE_RES flag skips the quota check.
593 */
594 STATIC int
xfs_trans_dqresv(xfs_trans_t * tp,xfs_mount_t * mp,xfs_dquot_t * dqp,long nblks,long ninos,uint flags)595 xfs_trans_dqresv(
596 xfs_trans_t *tp,
597 xfs_mount_t *mp,
598 xfs_dquot_t *dqp,
599 long nblks,
600 long ninos,
601 uint flags)
602 {
603 xfs_qcnt_t hardlimit;
604 xfs_qcnt_t softlimit;
605 time_t timer;
606 xfs_qwarncnt_t warns;
607 xfs_qwarncnt_t warnlimit;
608 xfs_qcnt_t count;
609 xfs_qcnt_t *resbcountp;
610 xfs_quotainfo_t *q = mp->m_quotainfo;
611
612
613 xfs_dqlock(dqp);
614
615 if (flags & XFS_TRANS_DQ_RES_BLKS) {
616 hardlimit = be64_to_cpu(dqp->q_core.d_blk_hardlimit);
617 if (!hardlimit)
618 hardlimit = q->qi_bhardlimit;
619 softlimit = be64_to_cpu(dqp->q_core.d_blk_softlimit);
620 if (!softlimit)
621 softlimit = q->qi_bsoftlimit;
622 timer = be32_to_cpu(dqp->q_core.d_btimer);
623 warns = be16_to_cpu(dqp->q_core.d_bwarns);
624 warnlimit = dqp->q_mount->m_quotainfo->qi_bwarnlimit;
625 resbcountp = &dqp->q_res_bcount;
626 } else {
627 ASSERT(flags & XFS_TRANS_DQ_RES_RTBLKS);
628 hardlimit = be64_to_cpu(dqp->q_core.d_rtb_hardlimit);
629 if (!hardlimit)
630 hardlimit = q->qi_rtbhardlimit;
631 softlimit = be64_to_cpu(dqp->q_core.d_rtb_softlimit);
632 if (!softlimit)
633 softlimit = q->qi_rtbsoftlimit;
634 timer = be32_to_cpu(dqp->q_core.d_rtbtimer);
635 warns = be16_to_cpu(dqp->q_core.d_rtbwarns);
636 warnlimit = dqp->q_mount->m_quotainfo->qi_rtbwarnlimit;
637 resbcountp = &dqp->q_res_rtbcount;
638 }
639
640 if ((flags & XFS_QMOPT_FORCE_RES) == 0 &&
641 dqp->q_core.d_id &&
642 ((XFS_IS_UQUOTA_ENFORCED(dqp->q_mount) && XFS_QM_ISUDQ(dqp)) ||
643 (XFS_IS_OQUOTA_ENFORCED(dqp->q_mount) &&
644 (XFS_QM_ISPDQ(dqp) || XFS_QM_ISGDQ(dqp))))) {
645 #ifdef QUOTADEBUG
646 xfs_debug(mp,
647 "BLK Res: nblks=%ld + resbcount=%Ld > hardlimit=%Ld?",
648 nblks, *resbcountp, hardlimit);
649 #endif
650 if (nblks > 0) {
651 /*
652 * dquot is locked already. See if we'd go over the
653 * hardlimit or exceed the timelimit if we allocate
654 * nblks.
655 */
656 if (hardlimit > 0ULL &&
657 hardlimit <= nblks + *resbcountp) {
658 xfs_quota_warn(mp, dqp, QUOTA_NL_BHARDWARN);
659 goto error_return;
660 }
661 if (softlimit > 0ULL &&
662 softlimit <= nblks + *resbcountp) {
663 if ((timer != 0 && get_seconds() > timer) ||
664 (warns != 0 && warns >= warnlimit)) {
665 xfs_quota_warn(mp, dqp,
666 QUOTA_NL_BSOFTLONGWARN);
667 goto error_return;
668 }
669
670 xfs_quota_warn(mp, dqp, QUOTA_NL_BSOFTWARN);
671 }
672 }
673 if (ninos > 0) {
674 count = be64_to_cpu(dqp->q_core.d_icount);
675 timer = be32_to_cpu(dqp->q_core.d_itimer);
676 warns = be16_to_cpu(dqp->q_core.d_iwarns);
677 warnlimit = dqp->q_mount->m_quotainfo->qi_iwarnlimit;
678 hardlimit = be64_to_cpu(dqp->q_core.d_ino_hardlimit);
679 if (!hardlimit)
680 hardlimit = q->qi_ihardlimit;
681 softlimit = be64_to_cpu(dqp->q_core.d_ino_softlimit);
682 if (!softlimit)
683 softlimit = q->qi_isoftlimit;
684
685 if (hardlimit > 0ULL && count >= hardlimit) {
686 xfs_quota_warn(mp, dqp, QUOTA_NL_IHARDWARN);
687 goto error_return;
688 }
689 if (softlimit > 0ULL && count >= softlimit) {
690 if ((timer != 0 && get_seconds() > timer) ||
691 (warns != 0 && warns >= warnlimit)) {
692 xfs_quota_warn(mp, dqp,
693 QUOTA_NL_ISOFTLONGWARN);
694 goto error_return;
695 }
696 xfs_quota_warn(mp, dqp, QUOTA_NL_ISOFTWARN);
697 }
698 }
699 }
700
701 /*
702 * Change the reservation, but not the actual usage.
703 * Note that q_res_bcount = q_core.d_bcount + resv
704 */
705 (*resbcountp) += (xfs_qcnt_t)nblks;
706 if (ninos != 0)
707 dqp->q_res_icount += (xfs_qcnt_t)ninos;
708
709 /*
710 * note the reservation amt in the trans struct too,
711 * so that the transaction knows how much was reserved by
712 * it against this particular dquot.
713 * We don't do this when we are reserving for a delayed allocation,
714 * because we don't have the luxury of a transaction envelope then.
715 */
716 if (tp) {
717 ASSERT(tp->t_dqinfo);
718 ASSERT(flags & XFS_QMOPT_RESBLK_MASK);
719 if (nblks != 0)
720 xfs_trans_mod_dquot(tp, dqp,
721 flags & XFS_QMOPT_RESBLK_MASK,
722 nblks);
723 if (ninos != 0)
724 xfs_trans_mod_dquot(tp, dqp,
725 XFS_TRANS_DQ_RES_INOS,
726 ninos);
727 }
728 ASSERT(dqp->q_res_bcount >= be64_to_cpu(dqp->q_core.d_bcount));
729 ASSERT(dqp->q_res_rtbcount >= be64_to_cpu(dqp->q_core.d_rtbcount));
730 ASSERT(dqp->q_res_icount >= be64_to_cpu(dqp->q_core.d_icount));
731
732 xfs_dqunlock(dqp);
733 return 0;
734
735 error_return:
736 xfs_dqunlock(dqp);
737 if (flags & XFS_QMOPT_ENOSPC)
738 return ENOSPC;
739 return EDQUOT;
740 }
741
742
743 /*
744 * Given dquot(s), make disk block and/or inode reservations against them.
745 * The fact that this does the reservation against both the usr and
746 * grp/prj quotas is important, because this follows a both-or-nothing
747 * approach.
748 *
749 * flags = XFS_QMOPT_FORCE_RES evades limit enforcement. Used by chown.
750 * XFS_QMOPT_ENOSPC returns ENOSPC not EDQUOT. Used by pquota.
751 * XFS_TRANS_DQ_RES_BLKS reserves regular disk blocks
752 * XFS_TRANS_DQ_RES_RTBLKS reserves realtime disk blocks
753 * dquots are unlocked on return, if they were not locked by caller.
754 */
755 int
xfs_trans_reserve_quota_bydquots(xfs_trans_t * tp,xfs_mount_t * mp,xfs_dquot_t * udqp,xfs_dquot_t * gdqp,long nblks,long ninos,uint flags)756 xfs_trans_reserve_quota_bydquots(
757 xfs_trans_t *tp,
758 xfs_mount_t *mp,
759 xfs_dquot_t *udqp,
760 xfs_dquot_t *gdqp,
761 long nblks,
762 long ninos,
763 uint flags)
764 {
765 int resvd = 0, error;
766
767 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
768 return 0;
769
770 if (tp && tp->t_dqinfo == NULL)
771 xfs_trans_alloc_dqinfo(tp);
772
773 ASSERT(flags & XFS_QMOPT_RESBLK_MASK);
774
775 if (udqp) {
776 error = xfs_trans_dqresv(tp, mp, udqp, nblks, ninos,
777 (flags & ~XFS_QMOPT_ENOSPC));
778 if (error)
779 return error;
780 resvd = 1;
781 }
782
783 if (gdqp) {
784 error = xfs_trans_dqresv(tp, mp, gdqp, nblks, ninos, flags);
785 if (error) {
786 /*
787 * can't do it, so backout previous reservation
788 */
789 if (resvd) {
790 flags |= XFS_QMOPT_FORCE_RES;
791 xfs_trans_dqresv(tp, mp, udqp,
792 -nblks, -ninos, flags);
793 }
794 return error;
795 }
796 }
797
798 /*
799 * Didn't change anything critical, so, no need to log
800 */
801 return 0;
802 }
803
804
805 /*
806 * Lock the dquot and change the reservation if we can.
807 * This doesn't change the actual usage, just the reservation.
808 * The inode sent in is locked.
809 */
810 int
xfs_trans_reserve_quota_nblks(struct xfs_trans * tp,struct xfs_inode * ip,long nblks,long ninos,uint flags)811 xfs_trans_reserve_quota_nblks(
812 struct xfs_trans *tp,
813 struct xfs_inode *ip,
814 long nblks,
815 long ninos,
816 uint flags)
817 {
818 struct xfs_mount *mp = ip->i_mount;
819
820 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
821 return 0;
822 if (XFS_IS_PQUOTA_ON(mp))
823 flags |= XFS_QMOPT_ENOSPC;
824
825 ASSERT(ip->i_ino != mp->m_sb.sb_uquotino);
826 ASSERT(ip->i_ino != mp->m_sb.sb_gquotino);
827
828 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
829 ASSERT((flags & ~(XFS_QMOPT_FORCE_RES | XFS_QMOPT_ENOSPC)) ==
830 XFS_TRANS_DQ_RES_RTBLKS ||
831 (flags & ~(XFS_QMOPT_FORCE_RES | XFS_QMOPT_ENOSPC)) ==
832 XFS_TRANS_DQ_RES_BLKS);
833
834 /*
835 * Reserve nblks against these dquots, with trans as the mediator.
836 */
837 return xfs_trans_reserve_quota_bydquots(tp, mp,
838 ip->i_udquot, ip->i_gdquot,
839 nblks, ninos, flags);
840 }
841
842 /*
843 * This routine is called to allocate a quotaoff log item.
844 */
845 xfs_qoff_logitem_t *
xfs_trans_get_qoff_item(xfs_trans_t * tp,xfs_qoff_logitem_t * startqoff,uint flags)846 xfs_trans_get_qoff_item(
847 xfs_trans_t *tp,
848 xfs_qoff_logitem_t *startqoff,
849 uint flags)
850 {
851 xfs_qoff_logitem_t *q;
852
853 ASSERT(tp != NULL);
854
855 q = xfs_qm_qoff_logitem_init(tp->t_mountp, startqoff, flags);
856 ASSERT(q != NULL);
857
858 /*
859 * Get a log_item_desc to point at the new item.
860 */
861 xfs_trans_add_item(tp, &q->qql_item);
862 return q;
863 }
864
865
866 /*
867 * This is called to mark the quotaoff logitem as needing
868 * to be logged when the transaction is committed. The logitem must
869 * already be associated with the given transaction.
870 */
871 void
xfs_trans_log_quotaoff_item(xfs_trans_t * tp,xfs_qoff_logitem_t * qlp)872 xfs_trans_log_quotaoff_item(
873 xfs_trans_t *tp,
874 xfs_qoff_logitem_t *qlp)
875 {
876 tp->t_flags |= XFS_TRANS_DIRTY;
877 qlp->qql_item.li_desc->lid_flags |= XFS_LID_DIRTY;
878 }
879
880 STATIC void
xfs_trans_alloc_dqinfo(xfs_trans_t * tp)881 xfs_trans_alloc_dqinfo(
882 xfs_trans_t *tp)
883 {
884 tp->t_dqinfo = kmem_zone_zalloc(xfs_Gqm->qm_dqtrxzone, KM_SLEEP);
885 }
886
887 void
xfs_trans_free_dqinfo(xfs_trans_t * tp)888 xfs_trans_free_dqinfo(
889 xfs_trans_t *tp)
890 {
891 if (!tp->t_dqinfo)
892 return;
893 kmem_zone_free(xfs_Gqm->qm_dqtrxzone, tp->t_dqinfo);
894 tp->t_dqinfo = NULL;
895 }
896