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x86: unexport io_delay_type
[wrt350n-kernel.git] / fs / xfs / quota / xfs_qm_syscalls.c
blob2cc5886cfe85e232374f67bf84620b564d9bbc42
1 /*
2 * Copyright (c) 2000-2005 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
19 #include <linux/capability.h>
20
21 #include "xfs.h"
22 #include "xfs_fs.h"
23 #include "xfs_bit.h"
24 #include "xfs_log.h"
25 #include "xfs_inum.h"
26 #include "xfs_trans.h"
27 #include "xfs_sb.h"
28 #include "xfs_ag.h"
29 #include "xfs_dir2.h"
30 #include "xfs_alloc.h"
31 #include "xfs_dmapi.h"
32 #include "xfs_quota.h"
33 #include "xfs_mount.h"
34 #include "xfs_bmap_btree.h"
35 #include "xfs_alloc_btree.h"
36 #include "xfs_ialloc_btree.h"
37 #include "xfs_dir2_sf.h"
38 #include "xfs_attr_sf.h"
39 #include "xfs_dinode.h"
40 #include "xfs_inode.h"
41 #include "xfs_ialloc.h"
42 #include "xfs_itable.h"
43 #include "xfs_bmap.h"
44 #include "xfs_btree.h"
45 #include "xfs_rtalloc.h"
46 #include "xfs_error.h"
47 #include "xfs_rw.h"
48 #include "xfs_acl.h"
49 #include "xfs_attr.h"
50 #include "xfs_buf_item.h"
51 #include "xfs_utils.h"
52 #include "xfs_qm.h"
53
54 #ifdef DEBUG
55 # define qdprintk(s, args...) cmn_err(CE_DEBUG, s, ## args)
56 #else
57 # define qdprintk(s, args...) do { } while (0)
58 #endif
59
60 STATIC int xfs_qm_scall_trunc_qfiles(xfs_mount_t *, uint);
61 STATIC int xfs_qm_scall_getquota(xfs_mount_t *, xfs_dqid_t, uint,
62 fs_disk_quota_t *);
63 STATIC int xfs_qm_scall_getqstat(xfs_mount_t *, fs_quota_stat_t *);
64 STATIC int xfs_qm_scall_setqlim(xfs_mount_t *, xfs_dqid_t, uint,
65 fs_disk_quota_t *);
66 STATIC int xfs_qm_scall_quotaon(xfs_mount_t *, uint);
67 STATIC int xfs_qm_scall_quotaoff(xfs_mount_t *, uint, boolean_t);
68 STATIC int xfs_qm_log_quotaoff(xfs_mount_t *, xfs_qoff_logitem_t **, uint);
69 STATIC int xfs_qm_log_quotaoff_end(xfs_mount_t *, xfs_qoff_logitem_t *,
70 uint);
71 STATIC uint xfs_qm_import_flags(uint);
72 STATIC uint xfs_qm_export_flags(uint);
73 STATIC uint xfs_qm_import_qtype_flags(uint);
74 STATIC uint xfs_qm_export_qtype_flags(uint);
75 STATIC void xfs_qm_export_dquot(xfs_mount_t *, xfs_disk_dquot_t *,
76 fs_disk_quota_t *);
77
78
79 /*
80 * The main distribution switch of all XFS quotactl system calls.
81 */
82 int
83 xfs_qm_quotactl(
84 xfs_mount_t *mp,
85 int cmd,
86 int id,
87 xfs_caddr_t addr)
88 {
89 int error;
90
91 ASSERT(addr != NULL || cmd == Q_XQUOTASYNC);
92
93 /*
94 * The following commands are valid even when quotaoff.
95 */
96 switch (cmd) {
97 case Q_XQUOTARM:
98 /*
99 * Truncate quota files. quota must be off.
100 */
101 if (XFS_IS_QUOTA_ON(mp))
102 return XFS_ERROR(EINVAL);
103 if (mp->m_flags & XFS_MOUNT_RDONLY)
104 return XFS_ERROR(EROFS);
105 return (xfs_qm_scall_trunc_qfiles(mp,
106 xfs_qm_import_qtype_flags(*(uint *)addr)));
107
108 case Q_XGETQSTAT:
109 /*
110 * Get quota status information.
111 */
112 return (xfs_qm_scall_getqstat(mp, (fs_quota_stat_t *)addr));
113
114 case Q_XQUOTAON:
115 /*
116 * QUOTAON - enabling quota enforcement.
117 * Quota accounting must be turned on at mount time.
118 */
119 if (mp->m_flags & XFS_MOUNT_RDONLY)
120 return XFS_ERROR(EROFS);
121 return (xfs_qm_scall_quotaon(mp,
122 xfs_qm_import_flags(*(uint *)addr)));
123
124 case Q_XQUOTAOFF:
125 if (mp->m_flags & XFS_MOUNT_RDONLY)
126 return XFS_ERROR(EROFS);
127 break;
128
129 case Q_XQUOTASYNC:
130 return (xfs_sync_inodes(mp, SYNC_DELWRI, NULL));
131
132 default:
133 break;
134 }
135
136 if (! XFS_IS_QUOTA_ON(mp))
137 return XFS_ERROR(ESRCH);
138
139 switch (cmd) {
140 case Q_XQUOTAOFF:
141 if (mp->m_flags & XFS_MOUNT_RDONLY)
142 return XFS_ERROR(EROFS);
143 error = xfs_qm_scall_quotaoff(mp,
144 xfs_qm_import_flags(*(uint *)addr),
145 B_FALSE);
146 break;
147
148 case Q_XGETQUOTA:
149 error = xfs_qm_scall_getquota(mp, (xfs_dqid_t)id, XFS_DQ_USER,
150 (fs_disk_quota_t *)addr);
151 break;
152 case Q_XGETGQUOTA:
153 error = xfs_qm_scall_getquota(mp, (xfs_dqid_t)id, XFS_DQ_GROUP,
154 (fs_disk_quota_t *)addr);
155 break;
156 case Q_XGETPQUOTA:
157 error = xfs_qm_scall_getquota(mp, (xfs_dqid_t)id, XFS_DQ_PROJ,
158 (fs_disk_quota_t *)addr);
159 break;
160
161 case Q_XSETQLIM:
162 if (mp->m_flags & XFS_MOUNT_RDONLY)
163 return XFS_ERROR(EROFS);
164 error = xfs_qm_scall_setqlim(mp, (xfs_dqid_t)id, XFS_DQ_USER,
165 (fs_disk_quota_t *)addr);
166 break;
167 case Q_XSETGQLIM:
168 if (mp->m_flags & XFS_MOUNT_RDONLY)
169 return XFS_ERROR(EROFS);
170 error = xfs_qm_scall_setqlim(mp, (xfs_dqid_t)id, XFS_DQ_GROUP,
171 (fs_disk_quota_t *)addr);
172 break;
173 case Q_XSETPQLIM:
174 if (mp->m_flags & XFS_MOUNT_RDONLY)
175 return XFS_ERROR(EROFS);
176 error = xfs_qm_scall_setqlim(mp, (xfs_dqid_t)id, XFS_DQ_PROJ,
177 (fs_disk_quota_t *)addr);
178 break;
179
180 default:
181 error = XFS_ERROR(EINVAL);
182 break;
183 }
184
185 return (error);
186 }
187
188 /*
189 * Turn off quota accounting and/or enforcement for all udquots and/or
190 * gdquots. Called only at unmount time.
191 *
192 * This assumes that there are no dquots of this file system cached
193 * incore, and modifies the ondisk dquot directly. Therefore, for example,
194 * it is an error to call this twice, without purging the cache.
195 */
196 STATIC int
197 xfs_qm_scall_quotaoff(
198 xfs_mount_t *mp,
199 uint flags,
200 boolean_t force)
201 {
202 uint dqtype;
203 int error;
204 uint inactivate_flags;
205 xfs_qoff_logitem_t *qoffstart;
206 int nculprits;
207
208 if (!force && !capable(CAP_SYS_ADMIN))
209 return XFS_ERROR(EPERM);
210 /*
211 * No file system can have quotas enabled on disk but not in core.
212 * Note that quota utilities (like quotaoff) _expect_
213 * errno == EEXIST here.
214 */
215 if ((mp->m_qflags & flags) == 0)
216 return XFS_ERROR(EEXIST);
217 error = 0;
218
219 flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
220
221 /*
222 * We don't want to deal with two quotaoffs messing up each other,
223 * so we're going to serialize it. quotaoff isn't exactly a performance
224 * critical thing.
225 * If quotaoff, then we must be dealing with the root filesystem.
226 */
227 ASSERT(mp->m_quotainfo);
228 if (mp->m_quotainfo)
229 mutex_lock(&(XFS_QI_QOFFLOCK(mp)));
230
231 ASSERT(mp->m_quotainfo);
232
233 /*
234 * If we're just turning off quota enforcement, change mp and go.
235 */
236 if ((flags & XFS_ALL_QUOTA_ACCT) == 0) {
237 mp->m_qflags &= ~(flags);
238
239 spin_lock(&mp->m_sb_lock);
240 mp->m_sb.sb_qflags = mp->m_qflags;
241 spin_unlock(&mp->m_sb_lock);
242 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
243
244 /* XXX what to do if error ? Revert back to old vals incore ? */
245 error = xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS);
246 return (error);
247 }
248
249 dqtype = 0;
250 inactivate_flags = 0;
251 /*
252 * If accounting is off, we must turn enforcement off, clear the
253 * quota 'CHKD' certificate to make it known that we have to
254 * do a quotacheck the next time this quota is turned on.
255 */
256 if (flags & XFS_UQUOTA_ACCT) {
257 dqtype |= XFS_QMOPT_UQUOTA;
258 flags |= (XFS_UQUOTA_CHKD | XFS_UQUOTA_ENFD);
259 inactivate_flags |= XFS_UQUOTA_ACTIVE;
260 }
261 if (flags & XFS_GQUOTA_ACCT) {
262 dqtype |= XFS_QMOPT_GQUOTA;
263 flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_ENFD);
264 inactivate_flags |= XFS_GQUOTA_ACTIVE;
265 } else if (flags & XFS_PQUOTA_ACCT) {
266 dqtype |= XFS_QMOPT_PQUOTA;
267 flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_ENFD);
268 inactivate_flags |= XFS_PQUOTA_ACTIVE;
269 }
270
271 /*
272 * Nothing to do? Don't complain. This happens when we're just
273 * turning off quota enforcement.
274 */
275 if ((mp->m_qflags & flags) == 0) {
276 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
277 return (0);
278 }
279
280 /*
281 * Write the LI_QUOTAOFF log record, and do SB changes atomically,
282 * and synchronously.
283 */
284 xfs_qm_log_quotaoff(mp, &qoffstart, flags);
285
286 /*
287 * Next we clear the XFS_MOUNT_*DQ_ACTIVE bit(s) in the mount struct
288 * to take care of the race between dqget and quotaoff. We don't take
289 * any special locks to reset these bits. All processes need to check
290 * these bits *after* taking inode lock(s) to see if the particular
291 * quota type is in the process of being turned off. If *ACTIVE, it is
292 * guaranteed that all dquot structures and all quotainode ptrs will all
293 * stay valid as long as that inode is kept locked.
294 *
295 * There is no turning back after this.
296 */
297 mp->m_qflags &= ~inactivate_flags;
298
299 /*
300 * Give back all the dquot reference(s) held by inodes.
301 * Here we go thru every single incore inode in this file system, and
302 * do a dqrele on the i_udquot/i_gdquot that it may have.
303 * Essentially, as long as somebody has an inode locked, this guarantees
304 * that quotas will not be turned off. This is handy because in a
305 * transaction once we lock the inode(s) and check for quotaon, we can
306 * depend on the quota inodes (and other things) being valid as long as
307 * we keep the lock(s).
308 */
309 xfs_qm_dqrele_all_inodes(mp, flags);
310
311 /*
312 * Next we make the changes in the quota flag in the mount struct.
313 * This isn't protected by a particular lock directly, because we
314 * don't want to take a mrlock everytime we depend on quotas being on.
315 */
316 mp->m_qflags &= ~(flags);
317
318 /*
319 * Go through all the dquots of this file system and purge them,
320 * according to what was turned off. We may not be able to get rid
321 * of all dquots, because dquots can have temporary references that
322 * are not attached to inodes. eg. xfs_setattr, xfs_create.
323 * So, if we couldn't purge all the dquots from the filesystem,
324 * we can't get rid of the incore data structures.
325 */
326 while ((nculprits = xfs_qm_dqpurge_all(mp, dqtype|XFS_QMOPT_QUOTAOFF)))
327 delay(10 * nculprits);
328
329 /*
330 * Transactions that had started before ACTIVE state bit was cleared
331 * could have logged many dquots, so they'd have higher LSNs than
332 * the first QUOTAOFF log record does. If we happen to crash when
333 * the tail of the log has gone past the QUOTAOFF record, but
334 * before the last dquot modification, those dquots __will__
335 * recover, and that's not good.
336 *
337 * So, we have QUOTAOFF start and end logitems; the start
338 * logitem won't get overwritten until the end logitem appears...
339 */
340 xfs_qm_log_quotaoff_end(mp, qoffstart, flags);
341
342 /*
343 * If quotas is completely disabled, close shop.
344 */
345 if (((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET1) ||
346 ((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET2)) {
347 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
348 xfs_qm_destroy_quotainfo(mp);
349 return (0);
350 }
351
352 /*
353 * Release our quotainode references, and vn_purge them,
354 * if we don't need them anymore.
355 */
356 if ((dqtype & XFS_QMOPT_UQUOTA) && XFS_QI_UQIP(mp)) {
357 XFS_PURGE_INODE(XFS_QI_UQIP(mp));
358 XFS_QI_UQIP(mp) = NULL;
359 }
360 if ((dqtype & (XFS_QMOPT_GQUOTA|XFS_QMOPT_PQUOTA)) && XFS_QI_GQIP(mp)) {
361 XFS_PURGE_INODE(XFS_QI_GQIP(mp));
362 XFS_QI_GQIP(mp) = NULL;
363 }
364 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
365
366 return (error);
367 }
368
369 STATIC int
370 xfs_qm_scall_trunc_qfiles(
371 xfs_mount_t *mp,
372 uint flags)
373 {
374 int error;
375 xfs_inode_t *qip;
376
377 if (!capable(CAP_SYS_ADMIN))
378 return XFS_ERROR(EPERM);
379 error = 0;
380 if (!XFS_SB_VERSION_HASQUOTA(&mp->m_sb) || flags == 0) {
381 qdprintk("qtrunc flags=%x m_qflags=%x\n", flags, mp->m_qflags);
382 return XFS_ERROR(EINVAL);
383 }
384
385 if ((flags & XFS_DQ_USER) && mp->m_sb.sb_uquotino != NULLFSINO) {
386 error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, 0, 0, &qip, 0);
387 if (! error) {
388 (void) xfs_truncate_file(mp, qip);
389 VN_RELE(XFS_ITOV(qip));
390 }
391 }
392
393 if ((flags & (XFS_DQ_GROUP|XFS_DQ_PROJ)) &&
394 mp->m_sb.sb_gquotino != NULLFSINO) {
395 error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, 0, 0, &qip, 0);
396 if (! error) {
397 (void) xfs_truncate_file(mp, qip);
398 VN_RELE(XFS_ITOV(qip));
399 }
400 }
401
402 return (error);
403 }
404
405
406 /*
407 * Switch on (a given) quota enforcement for a filesystem. This takes
408 * effect immediately.
409 * (Switching on quota accounting must be done at mount time.)
410 */
411 STATIC int
412 xfs_qm_scall_quotaon(
413 xfs_mount_t *mp,
414 uint flags)
415 {
416 int error;
417 uint qf;
418 uint accflags;
419 __int64_t sbflags;
420
421 if (!capable(CAP_SYS_ADMIN))
422 return XFS_ERROR(EPERM);
423
424 flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
425 /*
426 * Switching on quota accounting must be done at mount time.
427 */
428 accflags = flags & XFS_ALL_QUOTA_ACCT;
429 flags &= ~(XFS_ALL_QUOTA_ACCT);
430
431 sbflags = 0;
432
433 if (flags == 0) {
434 qdprintk("quotaon: zero flags, m_qflags=%x\n", mp->m_qflags);
435 return XFS_ERROR(EINVAL);
436 }
437
438 /* No fs can turn on quotas with a delayed effect */
439 ASSERT((flags & XFS_ALL_QUOTA_ACCT) == 0);
440
441 /*
442 * Can't enforce without accounting. We check the superblock
443 * qflags here instead of m_qflags because rootfs can have
444 * quota acct on ondisk without m_qflags' knowing.
445 */
446 if (((flags & XFS_UQUOTA_ACCT) == 0 &&
447 (mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) == 0 &&
448 (flags & XFS_UQUOTA_ENFD))
449 ||
450 ((flags & XFS_PQUOTA_ACCT) == 0 &&
451 (mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) == 0 &&
452 (flags & XFS_GQUOTA_ACCT) == 0 &&
453 (mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) == 0 &&
454 (flags & XFS_OQUOTA_ENFD))) {
455 qdprintk("Can't enforce without acct, flags=%x sbflags=%x\n",
456 flags, mp->m_sb.sb_qflags);
457 return XFS_ERROR(EINVAL);
458 }
459 /*
460 * If everything's upto-date incore, then don't waste time.
461 */
462 if ((mp->m_qflags & flags) == flags)
463 return XFS_ERROR(EEXIST);
464
465 /*
466 * Change sb_qflags on disk but not incore mp->qflags
467 * if this is the root filesystem.
468 */
469 spin_lock(&mp->m_sb_lock);
470 qf = mp->m_sb.sb_qflags;
471 mp->m_sb.sb_qflags = qf | flags;
472 spin_unlock(&mp->m_sb_lock);
473
474 /*
475 * There's nothing to change if it's the same.
476 */
477 if ((qf & flags) == flags && sbflags == 0)
478 return XFS_ERROR(EEXIST);
479 sbflags |= XFS_SB_QFLAGS;
480
481 if ((error = xfs_qm_write_sb_changes(mp, sbflags)))
482 return (error);
483 /*
484 * If we aren't trying to switch on quota enforcement, we are done.
485 */
486 if (((mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) !=
487 (mp->m_qflags & XFS_UQUOTA_ACCT)) ||
488 ((mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) !=
489 (mp->m_qflags & XFS_PQUOTA_ACCT)) ||
490 ((mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) !=
491 (mp->m_qflags & XFS_GQUOTA_ACCT)) ||
492 (flags & XFS_ALL_QUOTA_ENFD) == 0)
493 return (0);
494
495 if (! XFS_IS_QUOTA_RUNNING(mp))
496 return XFS_ERROR(ESRCH);
497
498 /*
499 * Switch on quota enforcement in core.
500 */
501 mutex_lock(&(XFS_QI_QOFFLOCK(mp)));
502 mp->m_qflags |= (flags & XFS_ALL_QUOTA_ENFD);
503 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
504
505 return (0);
506 }
507
508
509 /*
510 * Return quota status information, such as uquota-off, enforcements, etc.
511 */
512 STATIC int
513 xfs_qm_scall_getqstat(
514 xfs_mount_t *mp,
515 fs_quota_stat_t *out)
516 {
517 xfs_inode_t *uip, *gip;
518 boolean_t tempuqip, tempgqip;
519
520 uip = gip = NULL;
521 tempuqip = tempgqip = B_FALSE;
522 memset(out, 0, sizeof(fs_quota_stat_t));
523
524 out->qs_version = FS_QSTAT_VERSION;
525 if (! XFS_SB_VERSION_HASQUOTA(&mp->m_sb)) {
526 out->qs_uquota.qfs_ino = NULLFSINO;
527 out->qs_gquota.qfs_ino = NULLFSINO;
528 return (0);
529 }
530 out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
531 (XFS_ALL_QUOTA_ACCT|
532 XFS_ALL_QUOTA_ENFD));
533 out->qs_pad = 0;
534 out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
535 out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
536
537 if (mp->m_quotainfo) {
538 uip = mp->m_quotainfo->qi_uquotaip;
539 gip = mp->m_quotainfo->qi_gquotaip;
540 }
541 if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
542 if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
543 0, 0, &uip, 0) == 0)
544 tempuqip = B_TRUE;
545 }
546 if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
547 if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
548 0, 0, &gip, 0) == 0)
549 tempgqip = B_TRUE;
550 }
551 if (uip) {
552 out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks;
553 out->qs_uquota.qfs_nextents = uip->i_d.di_nextents;
554 if (tempuqip)
555 VN_RELE(XFS_ITOV(uip));
556 }
557 if (gip) {
558 out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks;
559 out->qs_gquota.qfs_nextents = gip->i_d.di_nextents;
560 if (tempgqip)
561 VN_RELE(XFS_ITOV(gip));
562 }
563 if (mp->m_quotainfo) {
564 out->qs_incoredqs = XFS_QI_MPLNDQUOTS(mp);
565 out->qs_btimelimit = XFS_QI_BTIMELIMIT(mp);
566 out->qs_itimelimit = XFS_QI_ITIMELIMIT(mp);
567 out->qs_rtbtimelimit = XFS_QI_RTBTIMELIMIT(mp);
568 out->qs_bwarnlimit = XFS_QI_BWARNLIMIT(mp);
569 out->qs_iwarnlimit = XFS_QI_IWARNLIMIT(mp);
570 }
571 return (0);
572 }
573
574 /*
575 * Adjust quota limits, and start/stop timers accordingly.
576 */
577 STATIC int
578 xfs_qm_scall_setqlim(
579 xfs_mount_t *mp,
580 xfs_dqid_t id,
581 uint type,
582 fs_disk_quota_t *newlim)
583 {
584 xfs_disk_dquot_t *ddq;
585 xfs_dquot_t *dqp;
586 xfs_trans_t *tp;
587 int error;
588 xfs_qcnt_t hard, soft;
589
590 if (!capable(CAP_SYS_ADMIN))
591 return XFS_ERROR(EPERM);
592
593 if ((newlim->d_fieldmask &
594 (FS_DQ_LIMIT_MASK|FS_DQ_TIMER_MASK|FS_DQ_WARNS_MASK)) == 0)
595 return (0);
596
597 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SETQLIM);
598 if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_disk_dquot_t) + 128,
599 0, 0, XFS_DEFAULT_LOG_COUNT))) {
600 xfs_trans_cancel(tp, 0);
601 return (error);
602 }
603
604 /*
605 * We don't want to race with a quotaoff so take the quotaoff lock.
606 * (We don't hold an inode lock, so there's nothing else to stop
607 * a quotaoff from happening). (XXXThis doesn't currently happen
608 * because we take the vfslock before calling xfs_qm_sysent).
609 */
610 mutex_lock(&(XFS_QI_QOFFLOCK(mp)));
611
612 /*
613 * Get the dquot (locked), and join it to the transaction.
614 * Allocate the dquot if this doesn't exist.
615 */
616 if ((error = xfs_qm_dqget(mp, NULL, id, type, XFS_QMOPT_DQALLOC, &dqp))) {
617 xfs_trans_cancel(tp, XFS_TRANS_ABORT);
618 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
619 ASSERT(error != ENOENT);
620 return (error);
621 }
622 xfs_dqtrace_entry(dqp, "Q_SETQLIM: AFT DQGET");
623 xfs_trans_dqjoin(tp, dqp);
624 ddq = &dqp->q_core;
625
626 /*
627 * Make sure that hardlimits are >= soft limits before changing.
628 */
629 hard = (newlim->d_fieldmask & FS_DQ_BHARD) ?
630 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_hardlimit) :
631 be64_to_cpu(ddq->d_blk_hardlimit);
632 soft = (newlim->d_fieldmask & FS_DQ_BSOFT) ?
633 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_softlimit) :
634 be64_to_cpu(ddq->d_blk_softlimit);
635 if (hard == 0 || hard >= soft) {
636 ddq->d_blk_hardlimit = cpu_to_be64(hard);
637 ddq->d_blk_softlimit = cpu_to_be64(soft);
638 if (id == 0) {
639 mp->m_quotainfo->qi_bhardlimit = hard;
640 mp->m_quotainfo->qi_bsoftlimit = soft;
641 }
642 } else {
643 qdprintk("blkhard %Ld < blksoft %Ld\n", hard, soft);
644 }
645 hard = (newlim->d_fieldmask & FS_DQ_RTBHARD) ?
646 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_hardlimit) :
647 be64_to_cpu(ddq->d_rtb_hardlimit);
648 soft = (newlim->d_fieldmask & FS_DQ_RTBSOFT) ?
649 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_softlimit) :
650 be64_to_cpu(ddq->d_rtb_softlimit);
651 if (hard == 0 || hard >= soft) {
652 ddq->d_rtb_hardlimit = cpu_to_be64(hard);
653 ddq->d_rtb_softlimit = cpu_to_be64(soft);
654 if (id == 0) {
655 mp->m_quotainfo->qi_rtbhardlimit = hard;
656 mp->m_quotainfo->qi_rtbsoftlimit = soft;
657 }
658 } else {
659 qdprintk("rtbhard %Ld < rtbsoft %Ld\n", hard, soft);
660 }
661
662 hard = (newlim->d_fieldmask & FS_DQ_IHARD) ?
663 (xfs_qcnt_t) newlim->d_ino_hardlimit :
664 be64_to_cpu(ddq->d_ino_hardlimit);
665 soft = (newlim->d_fieldmask & FS_DQ_ISOFT) ?
666 (xfs_qcnt_t) newlim->d_ino_softlimit :
667 be64_to_cpu(ddq->d_ino_softlimit);
668 if (hard == 0 || hard >= soft) {
669 ddq->d_ino_hardlimit = cpu_to_be64(hard);
670 ddq->d_ino_softlimit = cpu_to_be64(soft);
671 if (id == 0) {
672 mp->m_quotainfo->qi_ihardlimit = hard;
673 mp->m_quotainfo->qi_isoftlimit = soft;
674 }
675 } else {
676 qdprintk("ihard %Ld < isoft %Ld\n", hard, soft);
677 }
678
679 /*
680 * Update warnings counter(s) if requested
681 */
682 if (newlim->d_fieldmask & FS_DQ_BWARNS)
683 ddq->d_bwarns = cpu_to_be16(newlim->d_bwarns);
684 if (newlim->d_fieldmask & FS_DQ_IWARNS)
685 ddq->d_iwarns = cpu_to_be16(newlim->d_iwarns);
686 if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
687 ddq->d_rtbwarns = cpu_to_be16(newlim->d_rtbwarns);
688
689 if (id == 0) {
690 /*
691 * Timelimits for the super user set the relative time
692 * the other users can be over quota for this file system.
693 * If it is zero a default is used. Ditto for the default
694 * soft and hard limit values (already done, above), and
695 * for warnings.
696 */
697 if (newlim->d_fieldmask & FS_DQ_BTIMER) {
698 mp->m_quotainfo->qi_btimelimit = newlim->d_btimer;
699 ddq->d_btimer = cpu_to_be32(newlim->d_btimer);
700 }
701 if (newlim->d_fieldmask & FS_DQ_ITIMER) {
702 mp->m_quotainfo->qi_itimelimit = newlim->d_itimer;
703 ddq->d_itimer = cpu_to_be32(newlim->d_itimer);
704 }
705 if (newlim->d_fieldmask & FS_DQ_RTBTIMER) {
706 mp->m_quotainfo->qi_rtbtimelimit = newlim->d_rtbtimer;
707 ddq->d_rtbtimer = cpu_to_be32(newlim->d_rtbtimer);
708 }
709 if (newlim->d_fieldmask & FS_DQ_BWARNS)
710 mp->m_quotainfo->qi_bwarnlimit = newlim->d_bwarns;
711 if (newlim->d_fieldmask & FS_DQ_IWARNS)
712 mp->m_quotainfo->qi_iwarnlimit = newlim->d_iwarns;
713 if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
714 mp->m_quotainfo->qi_rtbwarnlimit = newlim->d_rtbwarns;
715 } else {
716 /*
717 * If the user is now over quota, start the timelimit.
718 * The user will not be 'warned'.
719 * Note that we keep the timers ticking, whether enforcement
720 * is on or off. We don't really want to bother with iterating
721 * over all ondisk dquots and turning the timers on/off.
722 */
723 xfs_qm_adjust_dqtimers(mp, ddq);
724 }
725 dqp->dq_flags |= XFS_DQ_DIRTY;
726 xfs_trans_log_dquot(tp, dqp);
727
728 xfs_dqtrace_entry(dqp, "Q_SETQLIM: COMMIT");
729 xfs_trans_commit(tp, 0);
730 xfs_qm_dqprint(dqp);
731 xfs_qm_dqrele(dqp);
732 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
733
734 return (0);
735 }
736
737 STATIC int
738 xfs_qm_scall_getquota(
739 xfs_mount_t *mp,
740 xfs_dqid_t id,
741 uint type,
742 fs_disk_quota_t *out)
743 {
744 xfs_dquot_t *dqp;
745 int error;
746
747 /*
748 * Try to get the dquot. We don't want it allocated on disk, so
749 * we aren't passing the XFS_QMOPT_DOALLOC flag. If it doesn't
750 * exist, we'll get ENOENT back.
751 */
752 if ((error = xfs_qm_dqget(mp, NULL, id, type, 0, &dqp))) {
753 return (error);
754 }
755
756 xfs_dqtrace_entry(dqp, "Q_GETQUOTA SUCCESS");
757 /*
758 * If everything's NULL, this dquot doesn't quite exist as far as
759 * our utility programs are concerned.
760 */
761 if (XFS_IS_DQUOT_UNINITIALIZED(dqp)) {
762 xfs_qm_dqput(dqp);
763 return XFS_ERROR(ENOENT);
764 }
765 /* xfs_qm_dqprint(dqp); */
766 /*
767 * Convert the disk dquot to the exportable format
768 */
769 xfs_qm_export_dquot(mp, &dqp->q_core, out);
770 xfs_qm_dqput(dqp);
771 return (error ? XFS_ERROR(EFAULT) : 0);
772 }
773
774
775 STATIC int
776 xfs_qm_log_quotaoff_end(
777 xfs_mount_t *mp,
778 xfs_qoff_logitem_t *startqoff,
779 uint flags)
780 {
781 xfs_trans_t *tp;
782 int error;
783 xfs_qoff_logitem_t *qoffi;
784
785 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF_END);
786
787 if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_qoff_logitem_t) * 2,
788 0, 0, XFS_DEFAULT_LOG_COUNT))) {
789 xfs_trans_cancel(tp, 0);
790 return (error);
791 }
792
793 qoffi = xfs_trans_get_qoff_item(tp, startqoff,
794 flags & XFS_ALL_QUOTA_ACCT);
795 xfs_trans_log_quotaoff_item(tp, qoffi);
796
797 /*
798 * We have to make sure that the transaction is secure on disk before we
799 * return and actually stop quota accounting. So, make it synchronous.
800 * We don't care about quotoff's performance.
801 */
802 xfs_trans_set_sync(tp);
803 error = xfs_trans_commit(tp, 0);
804 return (error);
805 }
806
807
808 STATIC int
809 xfs_qm_log_quotaoff(
810 xfs_mount_t *mp,
811 xfs_qoff_logitem_t **qoffstartp,
812 uint flags)
813 {
814 xfs_trans_t *tp;
815 int error;
816 xfs_qoff_logitem_t *qoffi=NULL;
817 uint oldsbqflag=0;
818
819 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF);
820 if ((error = xfs_trans_reserve(tp, 0,
821 sizeof(xfs_qoff_logitem_t) * 2 +
822 mp->m_sb.sb_sectsize + 128,
823 0,
824 0,
825 XFS_DEFAULT_LOG_COUNT))) {
826 goto error0;
827 }
828
829 qoffi = xfs_trans_get_qoff_item(tp, NULL, flags & XFS_ALL_QUOTA_ACCT);
830 xfs_trans_log_quotaoff_item(tp, qoffi);
831
832 spin_lock(&mp->m_sb_lock);
833 oldsbqflag = mp->m_sb.sb_qflags;
834 mp->m_sb.sb_qflags = (mp->m_qflags & ~(flags)) & XFS_MOUNT_QUOTA_ALL;
835 spin_unlock(&mp->m_sb_lock);
836
837 xfs_mod_sb(tp, XFS_SB_QFLAGS);
838
839 /*
840 * We have to make sure that the transaction is secure on disk before we
841 * return and actually stop quota accounting. So, make it synchronous.
842 * We don't care about quotoff's performance.
843 */
844 xfs_trans_set_sync(tp);
845 error = xfs_trans_commit(tp, 0);
846
847 error0:
848 if (error) {
849 xfs_trans_cancel(tp, 0);
850 /*
851 * No one else is modifying sb_qflags, so this is OK.
852 * We still hold the quotaofflock.
853 */
854 spin_lock(&mp->m_sb_lock);
855 mp->m_sb.sb_qflags = oldsbqflag;
856 spin_unlock(&mp->m_sb_lock);
857 }
858 *qoffstartp = qoffi;
859 return (error);
860 }
861
862
863 /*
864 * Translate an internal style on-disk-dquot to the exportable format.
865 * The main differences are that the counters/limits are all in Basic
866 * Blocks (BBs) instead of the internal FSBs, and all on-disk data has
867 * to be converted to the native endianness.
868 */
869 STATIC void
870 xfs_qm_export_dquot(
871 xfs_mount_t *mp,
872 xfs_disk_dquot_t *src,
873 struct fs_disk_quota *dst)
874 {
875 memset(dst, 0, sizeof(*dst));
876 dst->d_version = FS_DQUOT_VERSION; /* different from src->d_version */
877 dst->d_flags = xfs_qm_export_qtype_flags(src->d_flags);
878 dst->d_id = be32_to_cpu(src->d_id);
879 dst->d_blk_hardlimit =
880 XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_blk_hardlimit));
881 dst->d_blk_softlimit =
882 XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_blk_softlimit));
883 dst->d_ino_hardlimit = be64_to_cpu(src->d_ino_hardlimit);
884 dst->d_ino_softlimit = be64_to_cpu(src->d_ino_softlimit);
885 dst->d_bcount = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_bcount));
886 dst->d_icount = be64_to_cpu(src->d_icount);
887 dst->d_btimer = be32_to_cpu(src->d_btimer);
888 dst->d_itimer = be32_to_cpu(src->d_itimer);
889 dst->d_iwarns = be16_to_cpu(src->d_iwarns);
890 dst->d_bwarns = be16_to_cpu(src->d_bwarns);
891 dst->d_rtb_hardlimit =
892 XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtb_hardlimit));
893 dst->d_rtb_softlimit =
894 XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtb_softlimit));
895 dst->d_rtbcount = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtbcount));
896 dst->d_rtbtimer = be32_to_cpu(src->d_rtbtimer);
897 dst->d_rtbwarns = be16_to_cpu(src->d_rtbwarns);
898
899 /*
900 * Internally, we don't reset all the timers when quota enforcement
901 * gets turned off. No need to confuse the user level code,
902 * so return zeroes in that case.
903 */
904 if ((!XFS_IS_UQUOTA_ENFORCED(mp) && src->d_flags == XFS_DQ_USER) ||
905 (!XFS_IS_OQUOTA_ENFORCED(mp) &&
906 (src->d_flags & (XFS_DQ_PROJ | XFS_DQ_GROUP)))) {
907 dst->d_btimer = 0;
908 dst->d_itimer = 0;
909 dst->d_rtbtimer = 0;
910 }
911
912 #ifdef DEBUG
913 if (((XFS_IS_UQUOTA_ENFORCED(mp) && dst->d_flags == XFS_USER_QUOTA) ||
914 (XFS_IS_OQUOTA_ENFORCED(mp) &&
915 (dst->d_flags & (XFS_PROJ_QUOTA | XFS_GROUP_QUOTA)))) &&
916 dst->d_id != 0) {
917 if (((int) dst->d_bcount >= (int) dst->d_blk_softlimit) &&
918 (dst->d_blk_softlimit > 0)) {
919 ASSERT(dst->d_btimer != 0);
920 }
921 if (((int) dst->d_icount >= (int) dst->d_ino_softlimit) &&
922 (dst->d_ino_softlimit > 0)) {
923 ASSERT(dst->d_itimer != 0);
924 }
925 }
926 #endif
927 }
928
929 STATIC uint
930 xfs_qm_import_qtype_flags(
931 uint uflags)
932 {
933 uint oflags = 0;
934
935 /*
936 * Can't be more than one, or none.
937 */
938 if (((uflags & (XFS_GROUP_QUOTA | XFS_USER_QUOTA)) ==
939 (XFS_GROUP_QUOTA | XFS_USER_QUOTA)) ||
940 ((uflags & (XFS_GROUP_QUOTA | XFS_PROJ_QUOTA)) ==
941 (XFS_GROUP_QUOTA | XFS_PROJ_QUOTA)) ||
942 ((uflags & (XFS_USER_QUOTA | XFS_PROJ_QUOTA)) ==
943 (XFS_USER_QUOTA | XFS_PROJ_QUOTA)) ||
944 ((uflags & (XFS_GROUP_QUOTA|XFS_USER_QUOTA|XFS_PROJ_QUOTA)) == 0))
945 return (0);
946
947 oflags |= (uflags & XFS_USER_QUOTA) ? XFS_DQ_USER : 0;
948 oflags |= (uflags & XFS_PROJ_QUOTA) ? XFS_DQ_PROJ : 0;
949 oflags |= (uflags & XFS_GROUP_QUOTA) ? XFS_DQ_GROUP: 0;
950 return oflags;
951 }
952
953 STATIC uint
954 xfs_qm_export_qtype_flags(
955 uint flags)
956 {
957 /*
958 * Can't be more than one, or none.
959 */
960 ASSERT((flags & (XFS_PROJ_QUOTA | XFS_USER_QUOTA)) !=
961 (XFS_PROJ_QUOTA | XFS_USER_QUOTA));
962 ASSERT((flags & (XFS_PROJ_QUOTA | XFS_GROUP_QUOTA)) !=
963 (XFS_PROJ_QUOTA | XFS_GROUP_QUOTA));
964 ASSERT((flags & (XFS_USER_QUOTA | XFS_GROUP_QUOTA)) !=
965 (XFS_USER_QUOTA | XFS_GROUP_QUOTA));
966 ASSERT((flags & (XFS_PROJ_QUOTA|XFS_USER_QUOTA|XFS_GROUP_QUOTA)) != 0);
967
968 return (flags & XFS_DQ_USER) ?
969 XFS_USER_QUOTA : (flags & XFS_DQ_PROJ) ?
970 XFS_PROJ_QUOTA : XFS_GROUP_QUOTA;
971 }
972
973 STATIC uint
974 xfs_qm_import_flags(
975 uint uflags)
976 {
977 uint flags = 0;
978
979 if (uflags & XFS_QUOTA_UDQ_ACCT)
980 flags |= XFS_UQUOTA_ACCT;
981 if (uflags & XFS_QUOTA_PDQ_ACCT)
982 flags |= XFS_PQUOTA_ACCT;
983 if (uflags & XFS_QUOTA_GDQ_ACCT)
984 flags |= XFS_GQUOTA_ACCT;
985 if (uflags & XFS_QUOTA_UDQ_ENFD)
986 flags |= XFS_UQUOTA_ENFD;
987 if (uflags & (XFS_QUOTA_PDQ_ENFD|XFS_QUOTA_GDQ_ENFD))
988 flags |= XFS_OQUOTA_ENFD;
989 return (flags);
990 }
991
992
993 STATIC uint
994 xfs_qm_export_flags(
995 uint flags)
996 {
997 uint uflags;
998
999 uflags = 0;
1000 if (flags & XFS_UQUOTA_ACCT)
1001 uflags |= XFS_QUOTA_UDQ_ACCT;
1002 if (flags & XFS_PQUOTA_ACCT)
1003 uflags |= XFS_QUOTA_PDQ_ACCT;
1004 if (flags & XFS_GQUOTA_ACCT)
1005 uflags |= XFS_QUOTA_GDQ_ACCT;
1006 if (flags & XFS_UQUOTA_ENFD)
1007 uflags |= XFS_QUOTA_UDQ_ENFD;
1008 if (flags & (XFS_OQUOTA_ENFD)) {
1009 uflags |= (flags & XFS_GQUOTA_ACCT) ?
1010 XFS_QUOTA_GDQ_ENFD : XFS_QUOTA_PDQ_ENFD;
1011 }
1012 return (uflags);
1013 }
1014
1015
1016 /*
1017 * Go thru all the inodes in the file system, releasing their dquots.
1018 * Note that the mount structure gets modified to indicate that quotas are off
1019 * AFTER this, in the case of quotaoff. This also gets called from
1020 * xfs_rootumount.
1021 */
1022 void
1023 xfs_qm_dqrele_all_inodes(
1024 struct xfs_mount *mp,
1025 uint flags)
1026 {
1027 xfs_inode_t *ip, *topino;
1028 uint ireclaims;
1029 bhv_vnode_t *vp;
1030 boolean_t vnode_refd;
1031
1032 ASSERT(mp->m_quotainfo);
1033
1034 XFS_MOUNT_ILOCK(mp);
1035 again:
1036 ip = mp->m_inodes;
1037 if (ip == NULL) {
1038 XFS_MOUNT_IUNLOCK(mp);
1039 return;
1040 }
1041 do {
1042 /* Skip markers inserted by xfs_sync */
1043 if (ip->i_mount == NULL) {
1044 ip = ip->i_mnext;
1045 continue;
1046 }
1047 /* Root inode, rbmip and rsumip have associated blocks */
1048 if (ip == XFS_QI_UQIP(mp) || ip == XFS_QI_GQIP(mp)) {
1049 ASSERT(ip->i_udquot == NULL);
1050 ASSERT(ip->i_gdquot == NULL);
1051 ip = ip->i_mnext;
1052 continue;
1053 }
1054 vp = XFS_ITOV_NULL(ip);
1055 if (!vp) {
1056 ASSERT(ip->i_udquot == NULL);
1057 ASSERT(ip->i_gdquot == NULL);
1058 ip = ip->i_mnext;
1059 continue;
1060 }
1061 vnode_refd = B_FALSE;
1062 if (xfs_ilock_nowait(ip, XFS_ILOCK_EXCL) == 0) {
1063 ireclaims = mp->m_ireclaims;
1064 topino = mp->m_inodes;
1065 vp = vn_grab(vp);
1066 if (!vp)
1067 goto again;
1068
1069 XFS_MOUNT_IUNLOCK(mp);
1070 /* XXX restart limit ? */
1071 xfs_ilock(ip, XFS_ILOCK_EXCL);
1072 vnode_refd = B_TRUE;
1073 } else {
1074 ireclaims = mp->m_ireclaims;
1075 topino = mp->m_inodes;
1076 XFS_MOUNT_IUNLOCK(mp);
1077 }
1078
1079 /*
1080 * We don't keep the mountlock across the dqrele() call,
1081 * since it can take a while..
1082 */
1083 if ((flags & XFS_UQUOTA_ACCT) && ip->i_udquot) {
1084 xfs_qm_dqrele(ip->i_udquot);
1085 ip->i_udquot = NULL;
1086 }
1087 if (flags & (XFS_PQUOTA_ACCT|XFS_GQUOTA_ACCT) && ip->i_gdquot) {
1088 xfs_qm_dqrele(ip->i_gdquot);
1089 ip->i_gdquot = NULL;
1090 }
1091 xfs_iunlock(ip, XFS_ILOCK_EXCL);
1092 /*
1093 * Wait until we've dropped the ilock and mountlock to
1094 * do the vn_rele. Or be condemned to an eternity in the
1095 * inactive code in hell.
1096 */
1097 if (vnode_refd)
1098 VN_RELE(vp);
1099 XFS_MOUNT_ILOCK(mp);
1100 /*
1101 * If an inode was inserted or removed, we gotta
1102 * start over again.
1103 */
1104 if (topino != mp->m_inodes || mp->m_ireclaims != ireclaims) {
1105 /* XXX use a sentinel */
1106 goto again;
1107 }
1108 ip = ip->i_mnext;
1109 } while (ip != mp->m_inodes);
1110
1111 XFS_MOUNT_IUNLOCK(mp);
1112 }
1113
1114 /*------------------------------------------------------------------------*/
1115 #ifdef DEBUG
1116 /*
1117 * This contains all the test functions for XFS disk quotas.
1118 * Currently it does a quota accounting check. ie. it walks through
1119 * all inodes in the file system, calculating the dquot accounting fields,
1120 * and prints out any inconsistencies.
1121 */
1122 xfs_dqhash_t *qmtest_udqtab;
1123 xfs_dqhash_t *qmtest_gdqtab;
1124 int qmtest_hashmask;
1125 int qmtest_nfails;
1126 mutex_t qcheck_lock;
1127
1128 #define DQTEST_HASHVAL(mp, id) (((__psunsigned_t)(mp) + \
1129 (__psunsigned_t)(id)) & \
1130 (qmtest_hashmask - 1))
1131
1132 #define DQTEST_HASH(mp, id, type) ((type & XFS_DQ_USER) ? \
1133 (qmtest_udqtab + \
1134 DQTEST_HASHVAL(mp, id)) : \
1135 (qmtest_gdqtab + \
1136 DQTEST_HASHVAL(mp, id)))
1137
1138 #define DQTEST_LIST_PRINT(l, NXT, title) \
1139 { \
1140 xfs_dqtest_t *dqp; int i = 0;\
1141 cmn_err(CE_DEBUG, "%s (#%d)", title, (int) (l)->qh_nelems); \
1142 for (dqp = (xfs_dqtest_t *)(l)->qh_next; dqp != NULL; \
1143 dqp = (xfs_dqtest_t *)dqp->NXT) { \
1144 cmn_err(CE_DEBUG, " %d. \"%d (%s)\" bcnt = %d, icnt = %d", \
1145 ++i, dqp->d_id, DQFLAGTO_TYPESTR(dqp), \
1146 dqp->d_bcount, dqp->d_icount); } \
1147 }
1148
1149 typedef struct dqtest {
1150 xfs_dqmarker_t q_lists;
1151 xfs_dqhash_t *q_hash; /* the hashchain header */
1152 xfs_mount_t *q_mount; /* filesystem this relates to */
1153 xfs_dqid_t d_id; /* user id or group id */
1154 xfs_qcnt_t d_bcount; /* # disk blocks owned by the user */
1155 xfs_qcnt_t d_icount; /* # inodes owned by the user */
1156 } xfs_dqtest_t;
1157
1158 STATIC void
1159 xfs_qm_hashinsert(xfs_dqhash_t *h, xfs_dqtest_t *dqp)
1160 {
1161 xfs_dquot_t *d;
1162 if (((d) = (h)->qh_next))
1163 (d)->HL_PREVP = &((dqp)->HL_NEXT);
1164 (dqp)->HL_NEXT = d;
1165 (dqp)->HL_PREVP = &((h)->qh_next);
1166 (h)->qh_next = (xfs_dquot_t *)dqp;
1167 (h)->qh_version++;
1168 (h)->qh_nelems++;
1169 }
1170 STATIC void
1171 xfs_qm_dqtest_print(
1172 xfs_dqtest_t *d)
1173 {
1174 cmn_err(CE_DEBUG, "-----------DQTEST DQUOT----------------");
1175 cmn_err(CE_DEBUG, "---- dquot ID = %d", d->d_id);
1176 cmn_err(CE_DEBUG, "---- fs = 0x%p", d->q_mount);
1177 cmn_err(CE_DEBUG, "---- bcount = %Lu (0x%x)",
1178 d->d_bcount, (int)d->d_bcount);
1179 cmn_err(CE_DEBUG, "---- icount = %Lu (0x%x)",
1180 d->d_icount, (int)d->d_icount);
1181 cmn_err(CE_DEBUG, "---------------------------");
1182 }
1183
1184 STATIC void
1185 xfs_qm_dqtest_failed(
1186 xfs_dqtest_t *d,
1187 xfs_dquot_t *dqp,
1188 char *reason,
1189 xfs_qcnt_t a,
1190 xfs_qcnt_t b,
1191 int error)
1192 {
1193 qmtest_nfails++;
1194 if (error)
1195 cmn_err(CE_DEBUG, "quotacheck failed id=%d, err=%d\nreason: %s",
1196 d->d_id, error, reason);
1197 else
1198 cmn_err(CE_DEBUG, "quotacheck failed id=%d (%s) [%d != %d]",
1199 d->d_id, reason, (int)a, (int)b);
1200 xfs_qm_dqtest_print(d);
1201 if (dqp)
1202 xfs_qm_dqprint(dqp);
1203 }
1204
1205 STATIC int
1206 xfs_dqtest_cmp2(
1207 xfs_dqtest_t *d,
1208 xfs_dquot_t *dqp)
1209 {
1210 int err = 0;
1211 if (be64_to_cpu(dqp->q_core.d_icount) != d->d_icount) {
1212 xfs_qm_dqtest_failed(d, dqp, "icount mismatch",
1213 be64_to_cpu(dqp->q_core.d_icount),
1214 d->d_icount, 0);
1215 err++;
1216 }
1217 if (be64_to_cpu(dqp->q_core.d_bcount) != d->d_bcount) {
1218 xfs_qm_dqtest_failed(d, dqp, "bcount mismatch",
1219 be64_to_cpu(dqp->q_core.d_bcount),
1220 d->d_bcount, 0);
1221 err++;
1222 }
1223 if (dqp->q_core.d_blk_softlimit &&
1224 be64_to_cpu(dqp->q_core.d_bcount) >=
1225 be64_to_cpu(dqp->q_core.d_blk_softlimit)) {
1226 if (!dqp->q_core.d_btimer && dqp->q_core.d_id) {
1227 cmn_err(CE_DEBUG,
1228 "%d [%s] [0x%p] BLK TIMER NOT STARTED",
1229 d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
1230 err++;
1231 }
1232 }
1233 if (dqp->q_core.d_ino_softlimit &&
1234 be64_to_cpu(dqp->q_core.d_icount) >=
1235 be64_to_cpu(dqp->q_core.d_ino_softlimit)) {
1236 if (!dqp->q_core.d_itimer && dqp->q_core.d_id) {
1237 cmn_err(CE_DEBUG,
1238 "%d [%s] [0x%p] INO TIMER NOT STARTED",
1239 d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
1240 err++;
1241 }
1242 }
1243 #ifdef QUOTADEBUG
1244 if (!err) {
1245 cmn_err(CE_DEBUG, "%d [%s] [0x%p] qchecked",
1246 d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
1247 }
1248 #endif
1249 return (err);
1250 }
1251
1252 STATIC void
1253 xfs_dqtest_cmp(
1254 xfs_dqtest_t *d)
1255 {
1256 xfs_dquot_t *dqp;
1257 int error;
1258
1259 /* xfs_qm_dqtest_print(d); */
1260 if ((error = xfs_qm_dqget(d->q_mount, NULL, d->d_id, d->dq_flags, 0,
1261 &dqp))) {
1262 xfs_qm_dqtest_failed(d, NULL, "dqget failed", 0, 0, error);
1263 return;
1264 }
1265 xfs_dqtest_cmp2(d, dqp);
1266 xfs_qm_dqput(dqp);
1267 }
1268
1269 STATIC int
1270 xfs_qm_internalqcheck_dqget(
1271 xfs_mount_t *mp,
1272 xfs_dqid_t id,
1273 uint type,
1274 xfs_dqtest_t **O_dq)
1275 {
1276 xfs_dqtest_t *d;
1277 xfs_dqhash_t *h;
1278
1279 h = DQTEST_HASH(mp, id, type);
1280 for (d = (xfs_dqtest_t *) h->qh_next; d != NULL;
1281 d = (xfs_dqtest_t *) d->HL_NEXT) {
1282 /* DQTEST_LIST_PRINT(h, HL_NEXT, "@@@@@ dqtestlist @@@@@"); */
1283 if (d->d_id == id && mp == d->q_mount) {
1284 *O_dq = d;
1285 return (0);
1286 }
1287 }
1288 d = kmem_zalloc(sizeof(xfs_dqtest_t), KM_SLEEP);
1289 d->dq_flags = type;
1290 d->d_id = id;
1291 d->q_mount = mp;
1292 d->q_hash = h;
1293 xfs_qm_hashinsert(h, d);
1294 *O_dq = d;
1295 return (0);
1296 }
1297
1298 STATIC void
1299 xfs_qm_internalqcheck_get_dquots(
1300 xfs_mount_t *mp,
1301 xfs_dqid_t uid,
1302 xfs_dqid_t projid,
1303 xfs_dqid_t gid,
1304 xfs_dqtest_t **ud,
1305 xfs_dqtest_t **gd)
1306 {
1307 if (XFS_IS_UQUOTA_ON(mp))
1308 xfs_qm_internalqcheck_dqget(mp, uid, XFS_DQ_USER, ud);
1309 if (XFS_IS_GQUOTA_ON(mp))
1310 xfs_qm_internalqcheck_dqget(mp, gid, XFS_DQ_GROUP, gd);
1311 else if (XFS_IS_PQUOTA_ON(mp))
1312 xfs_qm_internalqcheck_dqget(mp, projid, XFS_DQ_PROJ, gd);
1313 }
1314
1315
1316 STATIC void
1317 xfs_qm_internalqcheck_dqadjust(
1318 xfs_inode_t *ip,
1319 xfs_dqtest_t *d)
1320 {
1321 d->d_icount++;
1322 d->d_bcount += (xfs_qcnt_t)ip->i_d.di_nblocks;
1323 }
1324
1325 STATIC int
1326 xfs_qm_internalqcheck_adjust(
1327 xfs_mount_t *mp, /* mount point for filesystem */
1328 xfs_ino_t ino, /* inode number to get data for */
1329 void __user *buffer, /* not used */
1330 int ubsize, /* not used */
1331 void *private_data, /* not used */
1332 xfs_daddr_t bno, /* starting block of inode cluster */
1333 int *ubused, /* not used */
1334 void *dip, /* not used */
1335 int *res) /* bulkstat result code */
1336 {
1337 xfs_inode_t *ip;
1338 xfs_dqtest_t *ud, *gd;
1339 uint lock_flags;
1340 boolean_t ipreleased;
1341 int error;
1342
1343 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1344
1345 if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) {
1346 *res = BULKSTAT_RV_NOTHING;
1347 qdprintk("internalqcheck: ino=%llu, uqino=%llu, gqino=%llu\n",
1348 (unsigned long long) ino,
1349 (unsigned long long) mp->m_sb.sb_uquotino,
1350 (unsigned long long) mp->m_sb.sb_gquotino);
1351 return XFS_ERROR(EINVAL);
1352 }
1353 ipreleased = B_FALSE;
1354 again:
1355 lock_flags = XFS_ILOCK_SHARED;
1356 if ((error = xfs_iget(mp, NULL, ino, 0, lock_flags, &ip, bno))) {
1357 *res = BULKSTAT_RV_NOTHING;
1358 return (error);
1359 }
1360
1361 if (ip->i_d.di_mode == 0) {
1362 xfs_iput_new(ip, lock_flags);
1363 *res = BULKSTAT_RV_NOTHING;
1364 return XFS_ERROR(ENOENT);
1365 }
1366
1367 /*
1368 * This inode can have blocks after eof which can get released
1369 * when we send it to inactive. Since we don't check the dquot
1370 * until the after all our calculations are done, we must get rid
1371 * of those now.
1372 */
1373 if (! ipreleased) {
1374 xfs_iput(ip, lock_flags);
1375 ipreleased = B_TRUE;
1376 goto again;
1377 }
1378 xfs_qm_internalqcheck_get_dquots(mp,
1379 (xfs_dqid_t) ip->i_d.di_uid,
1380 (xfs_dqid_t) ip->i_d.di_projid,
1381 (xfs_dqid_t) ip->i_d.di_gid,
1382 &ud, &gd);
1383 if (XFS_IS_UQUOTA_ON(mp)) {
1384 ASSERT(ud);
1385 xfs_qm_internalqcheck_dqadjust(ip, ud);
1386 }
1387 if (XFS_IS_OQUOTA_ON(mp)) {
1388 ASSERT(gd);
1389 xfs_qm_internalqcheck_dqadjust(ip, gd);
1390 }
1391 xfs_iput(ip, lock_flags);
1392 *res = BULKSTAT_RV_DIDONE;
1393 return (0);
1394 }
1395
1396
1397 /* PRIVATE, debugging */
1398 int
1399 xfs_qm_internalqcheck(
1400 xfs_mount_t *mp)
1401 {
1402 xfs_ino_t lastino;
1403 int done, count;
1404 int i;
1405 xfs_dqtest_t *d, *e;
1406 xfs_dqhash_t *h1;
1407 int error;
1408
1409 lastino = 0;
1410 qmtest_hashmask = 32;
1411 count = 5;
1412 done = 0;
1413 qmtest_nfails = 0;
1414
1415 if (! XFS_IS_QUOTA_ON(mp))
1416 return XFS_ERROR(ESRCH);
1417
1418 xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC);
1419 XFS_bflush(mp->m_ddev_targp);
1420 xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC);
1421 XFS_bflush(mp->m_ddev_targp);
1422
1423 mutex_lock(&qcheck_lock);
1424 /* There should be absolutely no quota activity while this
1425 is going on. */
1426 qmtest_udqtab = kmem_zalloc(qmtest_hashmask *
1427 sizeof(xfs_dqhash_t), KM_SLEEP);
1428 qmtest_gdqtab = kmem_zalloc(qmtest_hashmask *
1429 sizeof(xfs_dqhash_t), KM_SLEEP);
1430 do {
1431 /*
1432 * Iterate thru all the inodes in the file system,
1433 * adjusting the corresponding dquot counters
1434 */
1435 if ((error = xfs_bulkstat(mp, &lastino, &count,
1436 xfs_qm_internalqcheck_adjust, NULL,
1437 0, NULL, BULKSTAT_FG_IGET, &done))) {
1438 break;
1439 }
1440 } while (! done);
1441 if (error) {
1442 cmn_err(CE_DEBUG, "Bulkstat returned error 0x%x", error);
1443 }
1444 cmn_err(CE_DEBUG, "Checking results against system dquots");
1445 for (i = 0; i < qmtest_hashmask; i++) {
1446 h1 = &qmtest_udqtab[i];
1447 for (d = (xfs_dqtest_t *) h1->qh_next; d != NULL; ) {
1448 xfs_dqtest_cmp(d);
1449 e = (xfs_dqtest_t *) d->HL_NEXT;
1450 kmem_free(d, sizeof(xfs_dqtest_t));
1451 d = e;
1452 }
1453 h1 = &qmtest_gdqtab[i];
1454 for (d = (xfs_dqtest_t *) h1->qh_next; d != NULL; ) {
1455 xfs_dqtest_cmp(d);
1456 e = (xfs_dqtest_t *) d->HL_NEXT;
1457 kmem_free(d, sizeof(xfs_dqtest_t));
1458 d = e;
1459 }
1460 }
1461
1462 if (qmtest_nfails) {
1463 cmn_err(CE_DEBUG, "******** quotacheck failed ********");
1464 cmn_err(CE_DEBUG, "failures = %d", qmtest_nfails);
1465 } else {
1466 cmn_err(CE_DEBUG, "******** quotacheck successful! ********");
1467 }
1468 kmem_free(qmtest_udqtab, qmtest_hashmask * sizeof(xfs_dqhash_t));
1469 kmem_free(qmtest_gdqtab, qmtest_hashmask * sizeof(xfs_dqhash_t));
1470 mutex_unlock(&qcheck_lock);
1471 return (qmtest_nfails);
1472 }
1473
1474 #endif /* DEBUG */
WRT350N Kernel Patches