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1da177e4 LT |
1 | /* |
2 | * Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of version 2 of the GNU General Public License as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it would be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
11 | * | |
12 | * Further, this software is distributed without any warranty that it is | |
13 | * free of the rightful claim of any third person regarding infringement | |
14 | * or the like. Any license provided herein, whether implied or | |
15 | * otherwise, applies only to this software file. Patent licenses, if | |
16 | * any, provided herein do not apply to combinations of this program with | |
17 | * other software, or any other product whatsoever. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License along | |
20 | * with this program; if not, write the Free Software Foundation, Inc., 59 | |
21 | * Temple Place - Suite 330, Boston MA 02111-1307, USA. | |
22 | * | |
23 | * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, | |
24 | * Mountain View, CA 94043, or: | |
25 | * | |
26 | * http://www.sgi.com | |
27 | * | |
28 | * For further information regarding this notice, see: | |
29 | * | |
30 | * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ | |
31 | */ | |
32 | ||
33 | #include "xfs.h" | |
34 | #include "xfs_fs.h" | |
a844f451 | 35 | #include "xfs_bit.h" |
1da177e4 | 36 | #include "xfs_log.h" |
a844f451 | 37 | #include "xfs_inum.h" |
1da177e4 LT |
38 | #include "xfs_trans.h" |
39 | #include "xfs_sb.h" | |
40 | #include "xfs_ag.h" | |
41 | #include "xfs_dir.h" | |
42 | #include "xfs_dir2.h" | |
43 | #include "xfs_alloc.h" | |
44 | #include "xfs_dmapi.h" | |
45 | #include "xfs_quota.h" | |
46 | #include "xfs_mount.h" | |
1da177e4 | 47 | #include "xfs_bmap_btree.h" |
a844f451 | 48 | #include "xfs_alloc_btree.h" |
1da177e4 | 49 | #include "xfs_ialloc_btree.h" |
1da177e4 LT |
50 | #include "xfs_attr_sf.h" |
51 | #include "xfs_dir_sf.h" | |
52 | #include "xfs_dir2_sf.h" | |
53 | #include "xfs_dinode.h" | |
54 | #include "xfs_inode.h" | |
a844f451 NS |
55 | #include "xfs_ialloc.h" |
56 | #include "xfs_itable.h" | |
57 | #include "xfs_btree.h" | |
1da177e4 | 58 | #include "xfs_bmap.h" |
1da177e4 LT |
59 | #include "xfs_rtalloc.h" |
60 | #include "xfs_error.h" | |
1da177e4 LT |
61 | #include "xfs_rw.h" |
62 | #include "xfs_acl.h" | |
63 | #include "xfs_cap.h" | |
64 | #include "xfs_mac.h" | |
65 | #include "xfs_attr.h" | |
66 | #include "xfs_buf_item.h" | |
67 | #include "xfs_trans_priv.h" | |
68 | ||
69 | #include "xfs_qm.h" | |
70 | ||
71 | STATIC void xfs_trans_alloc_dqinfo(xfs_trans_t *); | |
72 | ||
73 | /* | |
74 | * Add the locked dquot to the transaction. | |
75 | * The dquot must be locked, and it cannot be associated with any | |
76 | * transaction. | |
77 | */ | |
78 | void | |
79 | xfs_trans_dqjoin( | |
80 | xfs_trans_t *tp, | |
81 | xfs_dquot_t *dqp) | |
82 | { | |
83 | xfs_dq_logitem_t *lp; | |
84 | ||
85 | ASSERT(! XFS_DQ_IS_ADDEDTO_TRX(tp, dqp)); | |
86 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); | |
87 | ASSERT(XFS_DQ_IS_LOGITEM_INITD(dqp)); | |
88 | lp = &dqp->q_logitem; | |
89 | ||
90 | /* | |
91 | * Get a log_item_desc to point at the new item. | |
92 | */ | |
93 | (void) xfs_trans_add_item(tp, (xfs_log_item_t*)(lp)); | |
94 | ||
95 | /* | |
96 | * Initialize i_transp so we can later determine if this dquot is | |
97 | * associated with this transaction. | |
98 | */ | |
99 | dqp->q_transp = tp; | |
100 | } | |
101 | ||
102 | ||
103 | /* | |
104 | * This is called to mark the dquot as needing | |
105 | * to be logged when the transaction is committed. The dquot must | |
106 | * already be associated with the given transaction. | |
107 | * Note that it marks the entire transaction as dirty. In the ordinary | |
108 | * case, this gets called via xfs_trans_commit, after the transaction | |
109 | * is already dirty. However, there's nothing stop this from getting | |
110 | * called directly, as done by xfs_qm_scall_setqlim. Hence, the TRANS_DIRTY | |
111 | * flag. | |
112 | */ | |
113 | void | |
114 | xfs_trans_log_dquot( | |
115 | xfs_trans_t *tp, | |
116 | xfs_dquot_t *dqp) | |
117 | { | |
118 | xfs_log_item_desc_t *lidp; | |
119 | ||
120 | ASSERT(XFS_DQ_IS_ADDEDTO_TRX(tp, dqp)); | |
121 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); | |
122 | ||
123 | lidp = xfs_trans_find_item(tp, (xfs_log_item_t*)(&dqp->q_logitem)); | |
124 | ASSERT(lidp != NULL); | |
125 | ||
126 | tp->t_flags |= XFS_TRANS_DIRTY; | |
127 | lidp->lid_flags |= XFS_LID_DIRTY; | |
128 | } | |
129 | ||
130 | /* | |
131 | * Carry forward whatever is left of the quota blk reservation to | |
132 | * the spanky new transaction | |
133 | */ | |
134 | STATIC void | |
135 | xfs_trans_dup_dqinfo( | |
136 | xfs_trans_t *otp, | |
137 | xfs_trans_t *ntp) | |
138 | { | |
139 | xfs_dqtrx_t *oq, *nq; | |
140 | int i,j; | |
141 | xfs_dqtrx_t *oqa, *nqa; | |
142 | ||
143 | if (!otp->t_dqinfo) | |
144 | return; | |
145 | ||
146 | xfs_trans_alloc_dqinfo(ntp); | |
147 | oqa = otp->t_dqinfo->dqa_usrdquots; | |
148 | nqa = ntp->t_dqinfo->dqa_usrdquots; | |
149 | ||
150 | /* | |
151 | * Because the quota blk reservation is carried forward, | |
152 | * it is also necessary to carry forward the DQ_DIRTY flag. | |
153 | */ | |
154 | if(otp->t_flags & XFS_TRANS_DQ_DIRTY) | |
155 | ntp->t_flags |= XFS_TRANS_DQ_DIRTY; | |
156 | ||
157 | for (j = 0; j < 2; j++) { | |
158 | for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { | |
159 | if (oqa[i].qt_dquot == NULL) | |
160 | break; | |
161 | oq = &oqa[i]; | |
162 | nq = &nqa[i]; | |
163 | ||
164 | nq->qt_dquot = oq->qt_dquot; | |
165 | nq->qt_bcount_delta = nq->qt_icount_delta = 0; | |
166 | nq->qt_rtbcount_delta = 0; | |
167 | ||
168 | /* | |
169 | * Transfer whatever is left of the reservations. | |
170 | */ | |
171 | nq->qt_blk_res = oq->qt_blk_res - oq->qt_blk_res_used; | |
172 | oq->qt_blk_res = oq->qt_blk_res_used; | |
173 | ||
174 | nq->qt_rtblk_res = oq->qt_rtblk_res - | |
175 | oq->qt_rtblk_res_used; | |
176 | oq->qt_rtblk_res = oq->qt_rtblk_res_used; | |
177 | ||
178 | nq->qt_ino_res = oq->qt_ino_res - oq->qt_ino_res_used; | |
179 | oq->qt_ino_res = oq->qt_ino_res_used; | |
180 | ||
181 | } | |
182 | oqa = otp->t_dqinfo->dqa_grpdquots; | |
183 | nqa = ntp->t_dqinfo->dqa_grpdquots; | |
184 | } | |
185 | } | |
186 | ||
187 | /* | |
188 | * Wrap around mod_dquot to account for both user and group quotas. | |
189 | */ | |
ba0f32d4 | 190 | STATIC void |
1da177e4 LT |
191 | xfs_trans_mod_dquot_byino( |
192 | xfs_trans_t *tp, | |
193 | xfs_inode_t *ip, | |
194 | uint field, | |
195 | long delta) | |
196 | { | |
197 | xfs_mount_t *mp; | |
198 | ||
199 | ASSERT(tp); | |
200 | mp = tp->t_mountp; | |
201 | ||
202 | if (!XFS_IS_QUOTA_ON(mp) || | |
203 | ip->i_ino == mp->m_sb.sb_uquotino || | |
204 | ip->i_ino == mp->m_sb.sb_gquotino) | |
205 | return; | |
206 | ||
207 | if (tp->t_dqinfo == NULL) | |
208 | xfs_trans_alloc_dqinfo(tp); | |
209 | ||
c8ad20ff | 210 | if (XFS_IS_UQUOTA_ON(mp) && ip->i_udquot) |
1da177e4 | 211 | (void) xfs_trans_mod_dquot(tp, ip->i_udquot, field, delta); |
c8ad20ff | 212 | if (XFS_IS_OQUOTA_ON(mp) && ip->i_gdquot) |
1da177e4 | 213 | (void) xfs_trans_mod_dquot(tp, ip->i_gdquot, field, delta); |
1da177e4 LT |
214 | } |
215 | ||
216 | STATIC xfs_dqtrx_t * | |
217 | xfs_trans_get_dqtrx( | |
218 | xfs_trans_t *tp, | |
219 | xfs_dquot_t *dqp) | |
220 | { | |
221 | int i; | |
222 | xfs_dqtrx_t *qa; | |
223 | ||
224 | for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { | |
225 | qa = XFS_QM_DQP_TO_DQACCT(tp, dqp); | |
226 | ||
227 | if (qa[i].qt_dquot == NULL || | |
228 | qa[i].qt_dquot == dqp) { | |
229 | return (&qa[i]); | |
230 | } | |
231 | } | |
232 | ||
233 | return (NULL); | |
234 | } | |
235 | ||
236 | /* | |
237 | * Make the changes in the transaction structure. | |
238 | * The moral equivalent to xfs_trans_mod_sb(). | |
239 | * We don't touch any fields in the dquot, so we don't care | |
240 | * if it's locked or not (most of the time it won't be). | |
241 | */ | |
242 | void | |
243 | xfs_trans_mod_dquot( | |
244 | xfs_trans_t *tp, | |
245 | xfs_dquot_t *dqp, | |
246 | uint field, | |
247 | long delta) | |
248 | { | |
249 | xfs_dqtrx_t *qtrx; | |
250 | ||
251 | ASSERT(tp); | |
252 | qtrx = NULL; | |
253 | ||
254 | if (tp->t_dqinfo == NULL) | |
255 | xfs_trans_alloc_dqinfo(tp); | |
256 | /* | |
257 | * Find either the first free slot or the slot that belongs | |
258 | * to this dquot. | |
259 | */ | |
260 | qtrx = xfs_trans_get_dqtrx(tp, dqp); | |
261 | ASSERT(qtrx); | |
262 | if (qtrx->qt_dquot == NULL) | |
263 | qtrx->qt_dquot = dqp; | |
264 | ||
265 | switch (field) { | |
266 | ||
267 | /* | |
268 | * regular disk blk reservation | |
269 | */ | |
270 | case XFS_TRANS_DQ_RES_BLKS: | |
271 | qtrx->qt_blk_res += (ulong)delta; | |
272 | break; | |
273 | ||
274 | /* | |
275 | * inode reservation | |
276 | */ | |
277 | case XFS_TRANS_DQ_RES_INOS: | |
278 | qtrx->qt_ino_res += (ulong)delta; | |
279 | break; | |
280 | ||
281 | /* | |
282 | * disk blocks used. | |
283 | */ | |
284 | case XFS_TRANS_DQ_BCOUNT: | |
285 | if (qtrx->qt_blk_res && delta > 0) { | |
286 | qtrx->qt_blk_res_used += (ulong)delta; | |
287 | ASSERT(qtrx->qt_blk_res >= qtrx->qt_blk_res_used); | |
288 | } | |
289 | qtrx->qt_bcount_delta += delta; | |
290 | break; | |
291 | ||
292 | case XFS_TRANS_DQ_DELBCOUNT: | |
293 | qtrx->qt_delbcnt_delta += delta; | |
294 | break; | |
295 | ||
296 | /* | |
297 | * Inode Count | |
298 | */ | |
299 | case XFS_TRANS_DQ_ICOUNT: | |
300 | if (qtrx->qt_ino_res && delta > 0) { | |
301 | qtrx->qt_ino_res_used += (ulong)delta; | |
302 | ASSERT(qtrx->qt_ino_res >= qtrx->qt_ino_res_used); | |
303 | } | |
304 | qtrx->qt_icount_delta += delta; | |
305 | break; | |
306 | ||
307 | /* | |
308 | * rtblk reservation | |
309 | */ | |
310 | case XFS_TRANS_DQ_RES_RTBLKS: | |
311 | qtrx->qt_rtblk_res += (ulong)delta; | |
312 | break; | |
313 | ||
314 | /* | |
315 | * rtblk count | |
316 | */ | |
317 | case XFS_TRANS_DQ_RTBCOUNT: | |
318 | if (qtrx->qt_rtblk_res && delta > 0) { | |
319 | qtrx->qt_rtblk_res_used += (ulong)delta; | |
320 | ASSERT(qtrx->qt_rtblk_res >= qtrx->qt_rtblk_res_used); | |
321 | } | |
322 | qtrx->qt_rtbcount_delta += delta; | |
323 | break; | |
324 | ||
325 | case XFS_TRANS_DQ_DELRTBCOUNT: | |
326 | qtrx->qt_delrtb_delta += delta; | |
327 | break; | |
328 | ||
329 | default: | |
330 | ASSERT(0); | |
331 | } | |
332 | tp->t_flags |= XFS_TRANS_DQ_DIRTY; | |
333 | } | |
334 | ||
335 | ||
336 | /* | |
337 | * Given an array of dqtrx structures, lock all the dquots associated | |
338 | * and join them to the transaction, provided they have been modified. | |
339 | * We know that the highest number of dquots (of one type - usr OR grp), | |
340 | * involved in a transaction is 2 and that both usr and grp combined - 3. | |
341 | * So, we don't attempt to make this very generic. | |
342 | */ | |
343 | STATIC void | |
344 | xfs_trans_dqlockedjoin( | |
345 | xfs_trans_t *tp, | |
346 | xfs_dqtrx_t *q) | |
347 | { | |
348 | ASSERT(q[0].qt_dquot != NULL); | |
349 | if (q[1].qt_dquot == NULL) { | |
350 | xfs_dqlock(q[0].qt_dquot); | |
351 | xfs_trans_dqjoin(tp, q[0].qt_dquot); | |
352 | } else { | |
353 | ASSERT(XFS_QM_TRANS_MAXDQS == 2); | |
354 | xfs_dqlock2(q[0].qt_dquot, q[1].qt_dquot); | |
355 | xfs_trans_dqjoin(tp, q[0].qt_dquot); | |
356 | xfs_trans_dqjoin(tp, q[1].qt_dquot); | |
357 | } | |
358 | } | |
359 | ||
360 | ||
361 | /* | |
362 | * Called by xfs_trans_commit() and similar in spirit to | |
363 | * xfs_trans_apply_sb_deltas(). | |
364 | * Go thru all the dquots belonging to this transaction and modify the | |
365 | * INCORE dquot to reflect the actual usages. | |
366 | * Unreserve just the reservations done by this transaction. | |
367 | * dquot is still left locked at exit. | |
368 | */ | |
ba0f32d4 | 369 | STATIC void |
1da177e4 LT |
370 | xfs_trans_apply_dquot_deltas( |
371 | xfs_trans_t *tp) | |
372 | { | |
373 | int i, j; | |
374 | xfs_dquot_t *dqp; | |
375 | xfs_dqtrx_t *qtrx, *qa; | |
376 | xfs_disk_dquot_t *d; | |
377 | long totalbdelta; | |
378 | long totalrtbdelta; | |
379 | ||
380 | if (! (tp->t_flags & XFS_TRANS_DQ_DIRTY)) | |
381 | return; | |
382 | ||
383 | ASSERT(tp->t_dqinfo); | |
384 | qa = tp->t_dqinfo->dqa_usrdquots; | |
385 | for (j = 0; j < 2; j++) { | |
386 | if (qa[0].qt_dquot == NULL) { | |
387 | qa = tp->t_dqinfo->dqa_grpdquots; | |
388 | continue; | |
389 | } | |
390 | ||
391 | /* | |
392 | * Lock all of the dquots and join them to the transaction. | |
393 | */ | |
394 | xfs_trans_dqlockedjoin(tp, qa); | |
395 | ||
396 | for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { | |
397 | qtrx = &qa[i]; | |
398 | /* | |
399 | * The array of dquots is filled | |
400 | * sequentially, not sparsely. | |
401 | */ | |
402 | if ((dqp = qtrx->qt_dquot) == NULL) | |
403 | break; | |
404 | ||
405 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); | |
406 | ASSERT(XFS_DQ_IS_ADDEDTO_TRX(tp, dqp)); | |
407 | ||
408 | /* | |
409 | * adjust the actual number of blocks used | |
410 | */ | |
411 | d = &dqp->q_core; | |
412 | ||
413 | /* | |
414 | * The issue here is - sometimes we don't make a blkquota | |
415 | * reservation intentionally to be fair to users | |
416 | * (when the amount is small). On the other hand, | |
417 | * delayed allocs do make reservations, but that's | |
418 | * outside of a transaction, so we have no | |
419 | * idea how much was really reserved. | |
420 | * So, here we've accumulated delayed allocation blks and | |
421 | * non-delay blks. The assumption is that the | |
422 | * delayed ones are always reserved (outside of a | |
423 | * transaction), and the others may or may not have | |
424 | * quota reservations. | |
425 | */ | |
426 | totalbdelta = qtrx->qt_bcount_delta + | |
427 | qtrx->qt_delbcnt_delta; | |
428 | totalrtbdelta = qtrx->qt_rtbcount_delta + | |
429 | qtrx->qt_delrtb_delta; | |
430 | #ifdef QUOTADEBUG | |
431 | if (totalbdelta < 0) | |
432 | ASSERT(INT_GET(d->d_bcount, ARCH_CONVERT) >= | |
433 | (xfs_qcnt_t) -totalbdelta); | |
434 | ||
435 | if (totalrtbdelta < 0) | |
436 | ASSERT(INT_GET(d->d_rtbcount, ARCH_CONVERT) >= | |
437 | (xfs_qcnt_t) -totalrtbdelta); | |
438 | ||
439 | if (qtrx->qt_icount_delta < 0) | |
440 | ASSERT(INT_GET(d->d_icount, ARCH_CONVERT) >= | |
441 | (xfs_qcnt_t) -qtrx->qt_icount_delta); | |
442 | #endif | |
443 | if (totalbdelta) | |
444 | INT_MOD(d->d_bcount, ARCH_CONVERT, (xfs_qcnt_t)totalbdelta); | |
445 | ||
446 | if (qtrx->qt_icount_delta) | |
447 | INT_MOD(d->d_icount, ARCH_CONVERT, (xfs_qcnt_t)qtrx->qt_icount_delta); | |
448 | ||
449 | if (totalrtbdelta) | |
450 | INT_MOD(d->d_rtbcount, ARCH_CONVERT, (xfs_qcnt_t)totalrtbdelta); | |
451 | ||
452 | /* | |
453 | * Get any default limits in use. | |
454 | * Start/reset the timer(s) if needed. | |
455 | */ | |
456 | if (d->d_id) { | |
457 | xfs_qm_adjust_dqlimits(tp->t_mountp, d); | |
458 | xfs_qm_adjust_dqtimers(tp->t_mountp, d); | |
459 | } | |
460 | ||
461 | dqp->dq_flags |= XFS_DQ_DIRTY; | |
462 | /* | |
463 | * add this to the list of items to get logged | |
464 | */ | |
465 | xfs_trans_log_dquot(tp, dqp); | |
466 | /* | |
467 | * Take off what's left of the original reservation. | |
468 | * In case of delayed allocations, there's no | |
469 | * reservation that a transaction structure knows of. | |
470 | */ | |
471 | if (qtrx->qt_blk_res != 0) { | |
472 | if (qtrx->qt_blk_res != qtrx->qt_blk_res_used) { | |
473 | if (qtrx->qt_blk_res > | |
474 | qtrx->qt_blk_res_used) | |
475 | dqp->q_res_bcount -= (xfs_qcnt_t) | |
476 | (qtrx->qt_blk_res - | |
477 | qtrx->qt_blk_res_used); | |
478 | else | |
479 | dqp->q_res_bcount -= (xfs_qcnt_t) | |
480 | (qtrx->qt_blk_res_used - | |
481 | qtrx->qt_blk_res); | |
482 | } | |
483 | } else { | |
484 | /* | |
485 | * These blks were never reserved, either inside | |
486 | * a transaction or outside one (in a delayed | |
487 | * allocation). Also, this isn't always a | |
488 | * negative number since we sometimes | |
489 | * deliberately skip quota reservations. | |
490 | */ | |
491 | if (qtrx->qt_bcount_delta) { | |
492 | dqp->q_res_bcount += | |
493 | (xfs_qcnt_t)qtrx->qt_bcount_delta; | |
494 | } | |
495 | } | |
496 | /* | |
497 | * Adjust the RT reservation. | |
498 | */ | |
499 | if (qtrx->qt_rtblk_res != 0) { | |
06d10dd9 | 500 | if (qtrx->qt_rtblk_res != qtrx->qt_rtblk_res_used) { |
1da177e4 LT |
501 | if (qtrx->qt_rtblk_res > |
502 | qtrx->qt_rtblk_res_used) | |
503 | dqp->q_res_rtbcount -= (xfs_qcnt_t) | |
504 | (qtrx->qt_rtblk_res - | |
505 | qtrx->qt_rtblk_res_used); | |
506 | else | |
507 | dqp->q_res_rtbcount -= (xfs_qcnt_t) | |
508 | (qtrx->qt_rtblk_res_used - | |
509 | qtrx->qt_rtblk_res); | |
510 | } | |
511 | } else { | |
512 | if (qtrx->qt_rtbcount_delta) | |
513 | dqp->q_res_rtbcount += | |
514 | (xfs_qcnt_t)qtrx->qt_rtbcount_delta; | |
515 | } | |
516 | ||
517 | /* | |
518 | * Adjust the inode reservation. | |
519 | */ | |
520 | if (qtrx->qt_ino_res != 0) { | |
521 | ASSERT(qtrx->qt_ino_res >= | |
522 | qtrx->qt_ino_res_used); | |
523 | if (qtrx->qt_ino_res > qtrx->qt_ino_res_used) | |
524 | dqp->q_res_icount -= (xfs_qcnt_t) | |
525 | (qtrx->qt_ino_res - | |
526 | qtrx->qt_ino_res_used); | |
527 | } else { | |
528 | if (qtrx->qt_icount_delta) | |
529 | dqp->q_res_icount += | |
530 | (xfs_qcnt_t)qtrx->qt_icount_delta; | |
531 | } | |
532 | ||
1da177e4 LT |
533 | ASSERT(dqp->q_res_bcount >= |
534 | INT_GET(dqp->q_core.d_bcount, ARCH_CONVERT)); | |
535 | ASSERT(dqp->q_res_icount >= | |
536 | INT_GET(dqp->q_core.d_icount, ARCH_CONVERT)); | |
537 | ASSERT(dqp->q_res_rtbcount >= | |
538 | INT_GET(dqp->q_core.d_rtbcount, ARCH_CONVERT)); | |
539 | } | |
540 | /* | |
541 | * Do the group quotas next | |
542 | */ | |
543 | qa = tp->t_dqinfo->dqa_grpdquots; | |
544 | } | |
545 | } | |
546 | ||
547 | /* | |
548 | * Release the reservations, and adjust the dquots accordingly. | |
549 | * This is called only when the transaction is being aborted. If by | |
550 | * any chance we have done dquot modifications incore (ie. deltas) already, | |
551 | * we simply throw those away, since that's the expected behavior | |
552 | * when a transaction is curtailed without a commit. | |
553 | */ | |
554 | STATIC void | |
555 | xfs_trans_unreserve_and_mod_dquots( | |
556 | xfs_trans_t *tp) | |
557 | { | |
558 | int i, j; | |
559 | xfs_dquot_t *dqp; | |
560 | xfs_dqtrx_t *qtrx, *qa; | |
561 | boolean_t locked; | |
562 | ||
563 | if (!tp->t_dqinfo || !(tp->t_flags & XFS_TRANS_DQ_DIRTY)) | |
564 | return; | |
565 | ||
566 | qa = tp->t_dqinfo->dqa_usrdquots; | |
567 | ||
568 | for (j = 0; j < 2; j++) { | |
569 | for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { | |
570 | qtrx = &qa[i]; | |
571 | /* | |
572 | * We assume that the array of dquots is filled | |
573 | * sequentially, not sparsely. | |
574 | */ | |
575 | if ((dqp = qtrx->qt_dquot) == NULL) | |
576 | break; | |
577 | /* | |
578 | * Unreserve the original reservation. We don't care | |
579 | * about the number of blocks used field, or deltas. | |
580 | * Also we don't bother to zero the fields. | |
581 | */ | |
582 | locked = B_FALSE; | |
583 | if (qtrx->qt_blk_res) { | |
584 | xfs_dqlock(dqp); | |
585 | locked = B_TRUE; | |
586 | dqp->q_res_bcount -= | |
587 | (xfs_qcnt_t)qtrx->qt_blk_res; | |
588 | } | |
589 | if (qtrx->qt_ino_res) { | |
590 | if (!locked) { | |
591 | xfs_dqlock(dqp); | |
592 | locked = B_TRUE; | |
593 | } | |
594 | dqp->q_res_icount -= | |
595 | (xfs_qcnt_t)qtrx->qt_ino_res; | |
596 | } | |
597 | ||
598 | if (qtrx->qt_rtblk_res) { | |
599 | if (!locked) { | |
600 | xfs_dqlock(dqp); | |
601 | locked = B_TRUE; | |
602 | } | |
603 | dqp->q_res_rtbcount -= | |
604 | (xfs_qcnt_t)qtrx->qt_rtblk_res; | |
605 | } | |
606 | if (locked) | |
607 | xfs_dqunlock(dqp); | |
608 | ||
609 | } | |
610 | qa = tp->t_dqinfo->dqa_grpdquots; | |
611 | } | |
612 | } | |
613 | ||
614 | /* | |
615 | * This reserves disk blocks and inodes against a dquot. | |
616 | * Flags indicate if the dquot is to be locked here and also | |
617 | * if the blk reservation is for RT or regular blocks. | |
618 | * Sending in XFS_QMOPT_FORCE_RES flag skips the quota check. | |
619 | * Returns EDQUOT if quota is exceeded. | |
620 | */ | |
621 | STATIC int | |
622 | xfs_trans_dqresv( | |
623 | xfs_trans_t *tp, | |
624 | xfs_mount_t *mp, | |
625 | xfs_dquot_t *dqp, | |
626 | long nblks, | |
627 | long ninos, | |
628 | uint flags) | |
629 | { | |
630 | int error; | |
631 | xfs_qcnt_t hardlimit; | |
632 | xfs_qcnt_t softlimit; | |
06d10dd9 NS |
633 | time_t timer; |
634 | xfs_qwarncnt_t warns; | |
635 | xfs_qwarncnt_t warnlimit; | |
636 | xfs_qcnt_t count; | |
1da177e4 LT |
637 | xfs_qcnt_t *resbcountp; |
638 | xfs_quotainfo_t *q = mp->m_quotainfo; | |
639 | ||
640 | if (! (flags & XFS_QMOPT_DQLOCK)) { | |
641 | xfs_dqlock(dqp); | |
642 | } | |
643 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); | |
644 | if (flags & XFS_TRANS_DQ_RES_BLKS) { | |
645 | hardlimit = INT_GET(dqp->q_core.d_blk_hardlimit, ARCH_CONVERT); | |
646 | if (!hardlimit) | |
647 | hardlimit = q->qi_bhardlimit; | |
648 | softlimit = INT_GET(dqp->q_core.d_blk_softlimit, ARCH_CONVERT); | |
649 | if (!softlimit) | |
650 | softlimit = q->qi_bsoftlimit; | |
06d10dd9 NS |
651 | timer = INT_GET(dqp->q_core.d_btimer, ARCH_CONVERT); |
652 | warns = INT_GET(dqp->q_core.d_bwarns, ARCH_CONVERT); | |
653 | warnlimit = XFS_QI_BWARNLIMIT(dqp->q_mount); | |
1da177e4 LT |
654 | resbcountp = &dqp->q_res_bcount; |
655 | } else { | |
656 | ASSERT(flags & XFS_TRANS_DQ_RES_RTBLKS); | |
657 | hardlimit = INT_GET(dqp->q_core.d_rtb_hardlimit, ARCH_CONVERT); | |
658 | if (!hardlimit) | |
659 | hardlimit = q->qi_rtbhardlimit; | |
660 | softlimit = INT_GET(dqp->q_core.d_rtb_softlimit, ARCH_CONVERT); | |
661 | if (!softlimit) | |
662 | softlimit = q->qi_rtbsoftlimit; | |
06d10dd9 NS |
663 | timer = INT_GET(dqp->q_core.d_rtbtimer, ARCH_CONVERT); |
664 | warns = INT_GET(dqp->q_core.d_rtbwarns, ARCH_CONVERT); | |
665 | warnlimit = XFS_QI_RTBWARNLIMIT(dqp->q_mount); | |
1da177e4 LT |
666 | resbcountp = &dqp->q_res_rtbcount; |
667 | } | |
668 | error = 0; | |
669 | ||
670 | if ((flags & XFS_QMOPT_FORCE_RES) == 0 && | |
671 | dqp->q_core.d_id && | |
672 | XFS_IS_QUOTA_ENFORCED(dqp->q_mount)) { | |
673 | #ifdef QUOTADEBUG | |
674 | cmn_err(CE_DEBUG, "BLK Res: nblks=%ld + resbcount=%Ld" | |
675 | " > hardlimit=%Ld?", nblks, *resbcountp, hardlimit); | |
676 | #endif | |
677 | if (nblks > 0) { | |
678 | /* | |
679 | * dquot is locked already. See if we'd go over the | |
680 | * hardlimit or exceed the timelimit if we allocate | |
681 | * nblks. | |
682 | */ | |
683 | if (hardlimit > 0ULL && | |
684 | (hardlimit <= nblks + *resbcountp)) { | |
685 | error = EDQUOT; | |
686 | goto error_return; | |
687 | } | |
688 | ||
689 | if (softlimit > 0ULL && | |
690 | (softlimit <= nblks + *resbcountp)) { | |
691 | /* | |
692 | * If timer or warnings has expired, | |
693 | * return EDQUOT | |
694 | */ | |
06d10dd9 NS |
695 | if ((timer != 0 && get_seconds() > timer) || |
696 | (warns != 0 && warns >= warnlimit)) { | |
1da177e4 LT |
697 | error = EDQUOT; |
698 | goto error_return; | |
699 | } | |
700 | } | |
701 | } | |
702 | if (ninos > 0) { | |
06d10dd9 NS |
703 | count = INT_GET(dqp->q_core.d_icount, ARCH_CONVERT); |
704 | timer = INT_GET(dqp->q_core.d_itimer, ARCH_CONVERT); | |
705 | warns = INT_GET(dqp->q_core.d_iwarns, ARCH_CONVERT); | |
706 | warnlimit = XFS_QI_IWARNLIMIT(dqp->q_mount); | |
707 | hardlimit = INT_GET(dqp->q_core.d_ino_hardlimit, | |
708 | ARCH_CONVERT); | |
1da177e4 LT |
709 | if (!hardlimit) |
710 | hardlimit = q->qi_ihardlimit; | |
06d10dd9 NS |
711 | softlimit = INT_GET(dqp->q_core.d_ino_softlimit, |
712 | ARCH_CONVERT); | |
1da177e4 LT |
713 | if (!softlimit) |
714 | softlimit = q->qi_isoftlimit; | |
06d10dd9 | 715 | if (hardlimit > 0ULL && count >= hardlimit) { |
1da177e4 LT |
716 | error = EDQUOT; |
717 | goto error_return; | |
06d10dd9 | 718 | } else if (softlimit > 0ULL && count >= softlimit) { |
1da177e4 LT |
719 | /* |
720 | * If timer or warnings has expired, | |
721 | * return EDQUOT | |
722 | */ | |
06d10dd9 NS |
723 | if ((timer != 0 && get_seconds() > timer) || |
724 | (warns != 0 && warns >= warnlimit)) { | |
1da177e4 LT |
725 | error = EDQUOT; |
726 | goto error_return; | |
727 | } | |
728 | } | |
729 | } | |
730 | } | |
731 | ||
732 | /* | |
733 | * Change the reservation, but not the actual usage. | |
734 | * Note that q_res_bcount = q_core.d_bcount + resv | |
735 | */ | |
736 | (*resbcountp) += (xfs_qcnt_t)nblks; | |
737 | if (ninos != 0) | |
738 | dqp->q_res_icount += (xfs_qcnt_t)ninos; | |
739 | ||
740 | /* | |
741 | * note the reservation amt in the trans struct too, | |
742 | * so that the transaction knows how much was reserved by | |
743 | * it against this particular dquot. | |
744 | * We don't do this when we are reserving for a delayed allocation, | |
745 | * because we don't have the luxury of a transaction envelope then. | |
746 | */ | |
747 | if (tp) { | |
748 | ASSERT(tp->t_dqinfo); | |
749 | ASSERT(flags & XFS_QMOPT_RESBLK_MASK); | |
750 | if (nblks != 0) | |
751 | xfs_trans_mod_dquot(tp, dqp, | |
752 | flags & XFS_QMOPT_RESBLK_MASK, | |
753 | nblks); | |
754 | if (ninos != 0) | |
755 | xfs_trans_mod_dquot(tp, dqp, | |
756 | XFS_TRANS_DQ_RES_INOS, | |
757 | ninos); | |
758 | } | |
759 | ASSERT(dqp->q_res_bcount >= INT_GET(dqp->q_core.d_bcount, ARCH_CONVERT)); | |
760 | ASSERT(dqp->q_res_rtbcount >= INT_GET(dqp->q_core.d_rtbcount, ARCH_CONVERT)); | |
761 | ASSERT(dqp->q_res_icount >= INT_GET(dqp->q_core.d_icount, ARCH_CONVERT)); | |
762 | ||
763 | error_return: | |
764 | if (! (flags & XFS_QMOPT_DQLOCK)) { | |
765 | xfs_dqunlock(dqp); | |
766 | } | |
767 | return (error); | |
768 | } | |
769 | ||
770 | ||
771 | /* | |
772 | * Given a dquot(s), make disk block and/or inode reservations against them. | |
773 | * The fact that this does the reservation against both the usr and | |
774 | * grp quotas is important, because this follows a both-or-nothing | |
775 | * approach. | |
776 | * | |
777 | * flags = XFS_QMOPT_DQLOCK indicate if dquot(s) need to be locked. | |
778 | * XFS_QMOPT_FORCE_RES evades limit enforcement. Used by chown. | |
779 | * XFS_TRANS_DQ_RES_BLKS reserves regular disk blocks | |
780 | * XFS_TRANS_DQ_RES_RTBLKS reserves realtime disk blocks | |
781 | * dquots are unlocked on return, if they were not locked by caller. | |
782 | */ | |
783 | int | |
784 | xfs_trans_reserve_quota_bydquots( | |
785 | xfs_trans_t *tp, | |
786 | xfs_mount_t *mp, | |
787 | xfs_dquot_t *udqp, | |
788 | xfs_dquot_t *gdqp, | |
789 | long nblks, | |
790 | long ninos, | |
791 | uint flags) | |
792 | { | |
793 | int resvd; | |
794 | ||
795 | if (! XFS_IS_QUOTA_ON(mp)) | |
796 | return (0); | |
797 | ||
798 | if (tp && tp->t_dqinfo == NULL) | |
799 | xfs_trans_alloc_dqinfo(tp); | |
800 | ||
801 | ASSERT(flags & XFS_QMOPT_RESBLK_MASK); | |
802 | resvd = 0; | |
803 | ||
804 | if (udqp) { | |
805 | if (xfs_trans_dqresv(tp, mp, udqp, nblks, ninos, flags)) | |
806 | return (EDQUOT); | |
807 | resvd = 1; | |
808 | } | |
809 | ||
810 | if (gdqp) { | |
811 | if (xfs_trans_dqresv(tp, mp, gdqp, nblks, ninos, flags)) { | |
812 | /* | |
813 | * can't do it, so backout previous reservation | |
814 | */ | |
815 | if (resvd) { | |
816 | flags |= XFS_QMOPT_FORCE_RES; | |
817 | xfs_trans_dqresv(tp, mp, udqp, | |
818 | -nblks, -ninos, flags); | |
819 | } | |
820 | return (EDQUOT); | |
821 | } | |
822 | } | |
823 | ||
824 | /* | |
825 | * Didnt change anything critical, so, no need to log | |
826 | */ | |
827 | return (0); | |
828 | } | |
829 | ||
830 | ||
831 | /* | |
832 | * Lock the dquot and change the reservation if we can. | |
833 | * This doesn't change the actual usage, just the reservation. | |
834 | * The inode sent in is locked. | |
835 | * | |
836 | * Returns 0 on success, EDQUOT or other errors otherwise | |
837 | */ | |
838 | STATIC int | |
839 | xfs_trans_reserve_quota_nblks( | |
840 | xfs_trans_t *tp, | |
841 | xfs_mount_t *mp, | |
842 | xfs_inode_t *ip, | |
843 | long nblks, | |
844 | long ninos, | |
845 | uint type) | |
846 | { | |
847 | int error; | |
848 | ||
849 | if (!XFS_IS_QUOTA_ON(mp)) | |
850 | return (0); | |
851 | ||
852 | ASSERT(ip->i_ino != mp->m_sb.sb_uquotino); | |
853 | ASSERT(ip->i_ino != mp->m_sb.sb_gquotino); | |
854 | ||
855 | ASSERT(XFS_ISLOCKED_INODE_EXCL(ip)); | |
856 | ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); | |
857 | ASSERT((type & ~XFS_QMOPT_FORCE_RES) == XFS_TRANS_DQ_RES_RTBLKS || | |
858 | (type & ~XFS_QMOPT_FORCE_RES) == XFS_TRANS_DQ_RES_BLKS); | |
859 | ||
860 | /* | |
861 | * Reserve nblks against these dquots, with trans as the mediator. | |
862 | */ | |
863 | error = xfs_trans_reserve_quota_bydquots(tp, mp, | |
864 | ip->i_udquot, ip->i_gdquot, | |
865 | nblks, ninos, | |
866 | type); | |
867 | return (error); | |
868 | } | |
869 | ||
870 | /* | |
871 | * This routine is called to allocate a quotaoff log item. | |
872 | */ | |
873 | xfs_qoff_logitem_t * | |
874 | xfs_trans_get_qoff_item( | |
875 | xfs_trans_t *tp, | |
876 | xfs_qoff_logitem_t *startqoff, | |
877 | uint flags) | |
878 | { | |
879 | xfs_qoff_logitem_t *q; | |
880 | ||
881 | ASSERT(tp != NULL); | |
882 | ||
883 | q = xfs_qm_qoff_logitem_init(tp->t_mountp, startqoff, flags); | |
884 | ASSERT(q != NULL); | |
885 | ||
886 | /* | |
887 | * Get a log_item_desc to point at the new item. | |
888 | */ | |
889 | (void) xfs_trans_add_item(tp, (xfs_log_item_t*)q); | |
890 | ||
891 | return (q); | |
892 | } | |
893 | ||
894 | ||
895 | /* | |
896 | * This is called to mark the quotaoff logitem as needing | |
897 | * to be logged when the transaction is committed. The logitem must | |
898 | * already be associated with the given transaction. | |
899 | */ | |
900 | void | |
901 | xfs_trans_log_quotaoff_item( | |
902 | xfs_trans_t *tp, | |
903 | xfs_qoff_logitem_t *qlp) | |
904 | { | |
905 | xfs_log_item_desc_t *lidp; | |
906 | ||
907 | lidp = xfs_trans_find_item(tp, (xfs_log_item_t *)qlp); | |
908 | ASSERT(lidp != NULL); | |
909 | ||
910 | tp->t_flags |= XFS_TRANS_DIRTY; | |
911 | lidp->lid_flags |= XFS_LID_DIRTY; | |
912 | } | |
913 | ||
914 | STATIC void | |
915 | xfs_trans_alloc_dqinfo( | |
916 | xfs_trans_t *tp) | |
917 | { | |
918 | (tp)->t_dqinfo = kmem_zone_zalloc(xfs_Gqm->qm_dqtrxzone, KM_SLEEP); | |
919 | } | |
920 | ||
921 | STATIC void | |
922 | xfs_trans_free_dqinfo( | |
923 | xfs_trans_t *tp) | |
924 | { | |
925 | if (!tp->t_dqinfo) | |
926 | return; | |
927 | kmem_zone_free(xfs_Gqm->qm_dqtrxzone, (tp)->t_dqinfo); | |
928 | (tp)->t_dqinfo = NULL; | |
929 | } | |
930 | ||
931 | xfs_dqtrxops_t xfs_trans_dquot_ops = { | |
932 | .qo_dup_dqinfo = xfs_trans_dup_dqinfo, | |
933 | .qo_free_dqinfo = xfs_trans_free_dqinfo, | |
934 | .qo_mod_dquot_byino = xfs_trans_mod_dquot_byino, | |
935 | .qo_apply_dquot_deltas = xfs_trans_apply_dquot_deltas, | |
936 | .qo_reserve_quota_nblks = xfs_trans_reserve_quota_nblks, | |
937 | .qo_reserve_quota_bydquots = xfs_trans_reserve_quota_bydquots, | |
938 | .qo_unreserve_and_mod_dquots = xfs_trans_unreserve_and_mod_dquots, | |
939 | }; |