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[PATCH] v850: call init_page_count() instead of set_page_count()
[linux-2.6/verdex.git] / fs / xfs / quota / xfs_qm_syscalls.c
blobed620c4d15941396e5bec0cc27cb0628a0b7dbc6
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_cap.h"
50 #include "xfs_mac.h"
51 #include "xfs_attr.h"
52 #include "xfs_buf_item.h"
53 #include "xfs_utils.h"
54 #include "xfs_qm.h"
55
56 #ifdef DEBUG
57 # define qdprintk(s, args...) cmn_err(CE_DEBUG, s, ## args)
58 #else
59 # define qdprintk(s, args...) do { } while (0)
60 #endif
61
62 STATIC int xfs_qm_scall_trunc_qfiles(xfs_mount_t *, uint);
63 STATIC int xfs_qm_scall_getquota(xfs_mount_t *, xfs_dqid_t, uint,
64 fs_disk_quota_t *);
65 STATIC int xfs_qm_scall_getqstat(xfs_mount_t *, fs_quota_stat_t *);
66 STATIC int xfs_qm_scall_setqlim(xfs_mount_t *, xfs_dqid_t, uint,
67 fs_disk_quota_t *);
68 STATIC int xfs_qm_scall_quotaon(xfs_mount_t *, uint);
69 STATIC int xfs_qm_scall_quotaoff(xfs_mount_t *, uint, boolean_t);
70 STATIC int xfs_qm_log_quotaoff(xfs_mount_t *, xfs_qoff_logitem_t **, uint);
71 STATIC int xfs_qm_log_quotaoff_end(xfs_mount_t *, xfs_qoff_logitem_t *,
72 uint);
73 STATIC uint xfs_qm_import_flags(uint);
74 STATIC uint xfs_qm_export_flags(uint);
75 STATIC uint xfs_qm_import_qtype_flags(uint);
76 STATIC uint xfs_qm_export_qtype_flags(uint);
77 STATIC void xfs_qm_export_dquot(xfs_mount_t *, xfs_disk_dquot_t *,
78 fs_disk_quota_t *);
79
80
81 /*
82 * The main distribution switch of all XFS quotactl system calls.
83 */
84 int
85 xfs_qm_quotactl(
86 struct bhv_desc *bdp,
87 int cmd,
88 int id,
89 xfs_caddr_t addr)
90 {
91 xfs_mount_t *mp;
92 bhv_vfs_t *vfsp;
93 int error;
94
95 vfsp = bhvtovfs(bdp);
96 mp = XFS_VFSTOM(vfsp);
97
98 ASSERT(addr != NULL || cmd == Q_XQUOTASYNC);
99
100 /*
101 * The following commands are valid even when quotaoff.
102 */
103 switch (cmd) {
104 case Q_XQUOTARM:
105 /*
106 * Truncate quota files. quota must be off.
107 */
108 if (XFS_IS_QUOTA_ON(mp))
109 return XFS_ERROR(EINVAL);
110 if (vfsp->vfs_flag & VFS_RDONLY)
111 return XFS_ERROR(EROFS);
112 return (xfs_qm_scall_trunc_qfiles(mp,
113 xfs_qm_import_qtype_flags(*(uint *)addr)));
114
115 case Q_XGETQSTAT:
116 /*
117 * Get quota status information.
118 */
119 return (xfs_qm_scall_getqstat(mp, (fs_quota_stat_t *)addr));
120
121 case Q_XQUOTAON:
122 /*
123 * QUOTAON - enabling quota enforcement.
124 * Quota accounting must be turned on at mount time.
125 */
126 if (vfsp->vfs_flag & VFS_RDONLY)
127 return XFS_ERROR(EROFS);
128 return (xfs_qm_scall_quotaon(mp,
129 xfs_qm_import_flags(*(uint *)addr)));
130
131 case Q_XQUOTAOFF:
132 if (vfsp->vfs_flag & VFS_RDONLY)
133 return XFS_ERROR(EROFS);
134 break;
135
136 case Q_XQUOTASYNC:
137 return (xfs_sync_inodes(mp, SYNC_DELWRI, 0, NULL));
138
139 default:
140 break;
141 }
142
143 if (! XFS_IS_QUOTA_ON(mp))
144 return XFS_ERROR(ESRCH);
145
146 switch (cmd) {
147 case Q_XQUOTAOFF:
148 if (vfsp->vfs_flag & VFS_RDONLY)
149 return XFS_ERROR(EROFS);
150 error = xfs_qm_scall_quotaoff(mp,
151 xfs_qm_import_flags(*(uint *)addr),
152 B_FALSE);
153 break;
154
155 case Q_XGETQUOTA:
156 error = xfs_qm_scall_getquota(mp, (xfs_dqid_t)id, XFS_DQ_USER,
157 (fs_disk_quota_t *)addr);
158 break;
159 case Q_XGETGQUOTA:
160 error = xfs_qm_scall_getquota(mp, (xfs_dqid_t)id, XFS_DQ_GROUP,
161 (fs_disk_quota_t *)addr);
162 break;
163 case Q_XGETPQUOTA:
164 error = xfs_qm_scall_getquota(mp, (xfs_dqid_t)id, XFS_DQ_PROJ,
165 (fs_disk_quota_t *)addr);
166 break;
167
168 case Q_XSETQLIM:
169 if (vfsp->vfs_flag & VFS_RDONLY)
170 return XFS_ERROR(EROFS);
171 error = xfs_qm_scall_setqlim(mp, (xfs_dqid_t)id, XFS_DQ_USER,
172 (fs_disk_quota_t *)addr);
173 break;
174 case Q_XSETGQLIM:
175 if (vfsp->vfs_flag & VFS_RDONLY)
176 return XFS_ERROR(EROFS);
177 error = xfs_qm_scall_setqlim(mp, (xfs_dqid_t)id, XFS_DQ_GROUP,
178 (fs_disk_quota_t *)addr);
179 break;
180 case Q_XSETPQLIM:
181 if (vfsp->vfs_flag & VFS_RDONLY)
182 return XFS_ERROR(EROFS);
183 error = xfs_qm_scall_setqlim(mp, (xfs_dqid_t)id, XFS_DQ_PROJ,
184 (fs_disk_quota_t *)addr);
185 break;
186
187 default:
188 error = XFS_ERROR(EINVAL);
189 break;
190 }
191
192 return (error);
193 }
194
195 /*
196 * Turn off quota accounting and/or enforcement for all udquots and/or
197 * gdquots. Called only at unmount time.
198 *
199 * This assumes that there are no dquots of this file system cached
200 * incore, and modifies the ondisk dquot directly. Therefore, for example,
201 * it is an error to call this twice, without purging the cache.
202 */
203 STATIC int
204 xfs_qm_scall_quotaoff(
205 xfs_mount_t *mp,
206 uint flags,
207 boolean_t force)
208 {
209 uint dqtype;
210 unsigned long s;
211 int error;
212 uint inactivate_flags;
213 xfs_qoff_logitem_t *qoffstart;
214 int nculprits;
215
216 if (!force && !capable(CAP_SYS_ADMIN))
217 return XFS_ERROR(EPERM);
218 /*
219 * No file system can have quotas enabled on disk but not in core.
220 * Note that quota utilities (like quotaoff) _expect_
221 * errno == EEXIST here.
222 */
223 if ((mp->m_qflags & flags) == 0)
224 return XFS_ERROR(EEXIST);
225 error = 0;
226
227 flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
228
229 /*
230 * We don't want to deal with two quotaoffs messing up each other,
231 * so we're going to serialize it. quotaoff isn't exactly a performance
232 * critical thing.
233 * If quotaoff, then we must be dealing with the root filesystem.
234 */
235 ASSERT(mp->m_quotainfo);
236 if (mp->m_quotainfo)
237 mutex_lock(&(XFS_QI_QOFFLOCK(mp)));
238
239 ASSERT(mp->m_quotainfo);
240
241 /*
242 * If we're just turning off quota enforcement, change mp and go.
243 */
244 if ((flags & XFS_ALL_QUOTA_ACCT) == 0) {
245 mp->m_qflags &= ~(flags);
246
247 s = XFS_SB_LOCK(mp);
248 mp->m_sb.sb_qflags = mp->m_qflags;
249 XFS_SB_UNLOCK(mp, s);
250 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
251
252 /* XXX what to do if error ? Revert back to old vals incore ? */
253 error = xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS);
254 return (error);
255 }
256
257 dqtype = 0;
258 inactivate_flags = 0;
259 /*
260 * If accounting is off, we must turn enforcement off, clear the
261 * quota 'CHKD' certificate to make it known that we have to
262 * do a quotacheck the next time this quota is turned on.
263 */
264 if (flags & XFS_UQUOTA_ACCT) {
265 dqtype |= XFS_QMOPT_UQUOTA;
266 flags |= (XFS_UQUOTA_CHKD | XFS_UQUOTA_ENFD);
267 inactivate_flags |= XFS_UQUOTA_ACTIVE;
268 }
269 if (flags & XFS_GQUOTA_ACCT) {
270 dqtype |= XFS_QMOPT_GQUOTA;
271 flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_ENFD);
272 inactivate_flags |= XFS_GQUOTA_ACTIVE;
273 } else if (flags & XFS_PQUOTA_ACCT) {
274 dqtype |= XFS_QMOPT_PQUOTA;
275 flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_ENFD);
276 inactivate_flags |= XFS_PQUOTA_ACTIVE;
277 }
278
279 /*
280 * Nothing to do? Don't complain. This happens when we're just
281 * turning off quota enforcement.
282 */
283 if ((mp->m_qflags & flags) == 0) {
284 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
285 return (0);
286 }
287
288 /*
289 * Write the LI_QUOTAOFF log record, and do SB changes atomically,
290 * and synchronously.
291 */
292 xfs_qm_log_quotaoff(mp, &qoffstart, flags);
293
294 /*
295 * Next we clear the XFS_MOUNT_*DQ_ACTIVE bit(s) in the mount struct
296 * to take care of the race between dqget and quotaoff. We don't take
297 * any special locks to reset these bits. All processes need to check
298 * these bits *after* taking inode lock(s) to see if the particular
299 * quota type is in the process of being turned off. If *ACTIVE, it is
300 * guaranteed that all dquot structures and all quotainode ptrs will all
301 * stay valid as long as that inode is kept locked.
302 *
303 * There is no turning back after this.
304 */
305 mp->m_qflags &= ~inactivate_flags;
306
307 /*
308 * Give back all the dquot reference(s) held by inodes.
309 * Here we go thru every single incore inode in this file system, and
310 * do a dqrele on the i_udquot/i_gdquot that it may have.
311 * Essentially, as long as somebody has an inode locked, this guarantees
312 * that quotas will not be turned off. This is handy because in a
313 * transaction once we lock the inode(s) and check for quotaon, we can
314 * depend on the quota inodes (and other things) being valid as long as
315 * we keep the lock(s).
316 */
317 xfs_qm_dqrele_all_inodes(mp, flags);
318
319 /*
320 * Next we make the changes in the quota flag in the mount struct.
321 * This isn't protected by a particular lock directly, because we
322 * don't want to take a mrlock everytime we depend on quotas being on.
323 */
324 mp->m_qflags &= ~(flags);
325
326 /*
327 * Go through all the dquots of this file system and purge them,
328 * according to what was turned off. We may not be able to get rid
329 * of all dquots, because dquots can have temporary references that
330 * are not attached to inodes. eg. xfs_setattr, xfs_create.
331 * So, if we couldn't purge all the dquots from the filesystem,
332 * we can't get rid of the incore data structures.
333 */
334 while ((nculprits = xfs_qm_dqpurge_all(mp, dqtype|XFS_QMOPT_QUOTAOFF)))
335 delay(10 * nculprits);
336
337 /*
338 * Transactions that had started before ACTIVE state bit was cleared
339 * could have logged many dquots, so they'd have higher LSNs than
340 * the first QUOTAOFF log record does. If we happen to crash when
341 * the tail of the log has gone past the QUOTAOFF record, but
342 * before the last dquot modification, those dquots __will__
343 * recover, and that's not good.
344 *
345 * So, we have QUOTAOFF start and end logitems; the start
346 * logitem won't get overwritten until the end logitem appears...
347 */
348 xfs_qm_log_quotaoff_end(mp, qoffstart, flags);
349
350 /*
351 * If quotas is completely disabled, close shop.
352 */
353 if (((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET1) ||
354 ((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET2)) {
355 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
356 xfs_qm_destroy_quotainfo(mp);
357 return (0);
358 }
359
360 /*
361 * Release our quotainode references, and vn_purge them,
362 * if we don't need them anymore.
363 */
364 if ((dqtype & XFS_QMOPT_UQUOTA) && XFS_QI_UQIP(mp)) {
365 XFS_PURGE_INODE(XFS_QI_UQIP(mp));
366 XFS_QI_UQIP(mp) = NULL;
367 }
368 if ((dqtype & (XFS_QMOPT_GQUOTA|XFS_QMOPT_PQUOTA)) && XFS_QI_GQIP(mp)) {
369 XFS_PURGE_INODE(XFS_QI_GQIP(mp));
370 XFS_QI_GQIP(mp) = NULL;
371 }
372 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
373
374 return (error);
375 }
376
377 STATIC int
378 xfs_qm_scall_trunc_qfiles(
379 xfs_mount_t *mp,
380 uint flags)
381 {
382 int error;
383 xfs_inode_t *qip;
384
385 if (!capable(CAP_SYS_ADMIN))
386 return XFS_ERROR(EPERM);
387 error = 0;
388 if (!XFS_SB_VERSION_HASQUOTA(&mp->m_sb) || flags == 0) {
389 qdprintk("qtrunc flags=%x m_qflags=%x\n", flags, mp->m_qflags);
390 return XFS_ERROR(EINVAL);
391 }
392
393 if ((flags & XFS_DQ_USER) && mp->m_sb.sb_uquotino != NULLFSINO) {
394 error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, 0, 0, &qip, 0);
395 if (! error) {
396 (void) xfs_truncate_file(mp, qip);
397 VN_RELE(XFS_ITOV(qip));
398 }
399 }
400
401 if ((flags & (XFS_DQ_GROUP|XFS_DQ_PROJ)) &&
402 mp->m_sb.sb_gquotino != NULLFSINO) {
403 error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, 0, 0, &qip, 0);
404 if (! error) {
405 (void) xfs_truncate_file(mp, qip);
406 VN_RELE(XFS_ITOV(qip));
407 }
408 }
409
410 return (error);
411 }
412
413
414 /*
415 * Switch on (a given) quota enforcement for a filesystem. This takes
416 * effect immediately.
417 * (Switching on quota accounting must be done at mount time.)
418 */
419 STATIC int
420 xfs_qm_scall_quotaon(
421 xfs_mount_t *mp,
422 uint flags)
423 {
424 int error;
425 unsigned long s;
426 uint qf;
427 uint accflags;
428 __int64_t sbflags;
429
430 if (!capable(CAP_SYS_ADMIN))
431 return XFS_ERROR(EPERM);
432
433 flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
434 /*
435 * Switching on quota accounting must be done at mount time.
436 */
437 accflags = flags & XFS_ALL_QUOTA_ACCT;
438 flags &= ~(XFS_ALL_QUOTA_ACCT);
439
440 sbflags = 0;
441
442 if (flags == 0) {
443 qdprintk("quotaon: zero flags, m_qflags=%x\n", mp->m_qflags);
444 return XFS_ERROR(EINVAL);
445 }
446
447 /* No fs can turn on quotas with a delayed effect */
448 ASSERT((flags & XFS_ALL_QUOTA_ACCT) == 0);
449
450 /*
451 * Can't enforce without accounting. We check the superblock
452 * qflags here instead of m_qflags because rootfs can have
453 * quota acct on ondisk without m_qflags' knowing.
454 */
455 if (((flags & XFS_UQUOTA_ACCT) == 0 &&
456 (mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) == 0 &&
457 (flags & XFS_UQUOTA_ENFD))
458 ||
459 ((flags & XFS_PQUOTA_ACCT) == 0 &&
460 (mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) == 0 &&
461 (flags & XFS_OQUOTA_ENFD))
462 ||
463 ((flags & XFS_GQUOTA_ACCT) == 0 &&
464 (mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) == 0 &&
465 (flags & XFS_OQUOTA_ENFD))) {
466 qdprintk("Can't enforce without acct, flags=%x sbflags=%x\n",
467 flags, mp->m_sb.sb_qflags);
468 return XFS_ERROR(EINVAL);
469 }
470 /*
471 * If everything's upto-date incore, then don't waste time.
472 */
473 if ((mp->m_qflags & flags) == flags)
474 return XFS_ERROR(EEXIST);
475
476 /*
477 * Change sb_qflags on disk but not incore mp->qflags
478 * if this is the root filesystem.
479 */
480 s = XFS_SB_LOCK(mp);
481 qf = mp->m_sb.sb_qflags;
482 mp->m_sb.sb_qflags = qf | flags;
483 XFS_SB_UNLOCK(mp, s);
484
485 /*
486 * There's nothing to change if it's the same.
487 */
488 if ((qf & flags) == flags && sbflags == 0)
489 return XFS_ERROR(EEXIST);
490 sbflags |= XFS_SB_QFLAGS;
491
492 if ((error = xfs_qm_write_sb_changes(mp, sbflags)))
493 return (error);
494 /*
495 * If we aren't trying to switch on quota enforcement, we are done.
496 */
497 if (((mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) !=
498 (mp->m_qflags & XFS_UQUOTA_ACCT)) ||
499 ((mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) !=
500 (mp->m_qflags & XFS_PQUOTA_ACCT)) ||
501 ((mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) !=
502 (mp->m_qflags & XFS_GQUOTA_ACCT)) ||
503 (flags & XFS_ALL_QUOTA_ENFD) == 0)
504 return (0);
505
506 if (! XFS_IS_QUOTA_RUNNING(mp))
507 return XFS_ERROR(ESRCH);
508
509 /*
510 * Switch on quota enforcement in core.
511 */
512 mutex_lock(&(XFS_QI_QOFFLOCK(mp)));
513 mp->m_qflags |= (flags & XFS_ALL_QUOTA_ENFD);
514 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
515
516 return (0);
517 }
518
519
520 /*
521 * Return quota status information, such as uquota-off, enforcements, etc.
522 */
523 STATIC int
524 xfs_qm_scall_getqstat(
525 xfs_mount_t *mp,
526 fs_quota_stat_t *out)
527 {
528 xfs_inode_t *uip, *gip;
529 boolean_t tempuqip, tempgqip;
530
531 uip = gip = NULL;
532 tempuqip = tempgqip = B_FALSE;
533 memset(out, 0, sizeof(fs_quota_stat_t));
534
535 out->qs_version = FS_QSTAT_VERSION;
536 if (! XFS_SB_VERSION_HASQUOTA(&mp->m_sb)) {
537 out->qs_uquota.qfs_ino = NULLFSINO;
538 out->qs_gquota.qfs_ino = NULLFSINO;
539 return (0);
540 }
541 out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
542 (XFS_ALL_QUOTA_ACCT|
543 XFS_ALL_QUOTA_ENFD));
544 out->qs_pad = 0;
545 out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
546 out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
547
548 if (mp->m_quotainfo) {
549 uip = mp->m_quotainfo->qi_uquotaip;
550 gip = mp->m_quotainfo->qi_gquotaip;
551 }
552 if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
553 if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
554 0, 0, &uip, 0) == 0)
555 tempuqip = B_TRUE;
556 }
557 if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
558 if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
559 0, 0, &gip, 0) == 0)
560 tempgqip = B_TRUE;
561 }
562 if (uip) {
563 out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks;
564 out->qs_uquota.qfs_nextents = uip->i_d.di_nextents;
565 if (tempuqip)
566 VN_RELE(XFS_ITOV(uip));
567 }
568 if (gip) {
569 out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks;
570 out->qs_gquota.qfs_nextents = gip->i_d.di_nextents;
571 if (tempgqip)
572 VN_RELE(XFS_ITOV(gip));
573 }
574 if (mp->m_quotainfo) {
575 out->qs_incoredqs = XFS_QI_MPLNDQUOTS(mp);
576 out->qs_btimelimit = XFS_QI_BTIMELIMIT(mp);
577 out->qs_itimelimit = XFS_QI_ITIMELIMIT(mp);
578 out->qs_rtbtimelimit = XFS_QI_RTBTIMELIMIT(mp);
579 out->qs_bwarnlimit = XFS_QI_BWARNLIMIT(mp);
580 out->qs_iwarnlimit = XFS_QI_IWARNLIMIT(mp);
581 }
582 return (0);
583 }
584
585 /*
586 * Adjust quota limits, and start/stop timers accordingly.
587 */
588 STATIC int
589 xfs_qm_scall_setqlim(
590 xfs_mount_t *mp,
591 xfs_dqid_t id,
592 uint type,
593 fs_disk_quota_t *newlim)
594 {
595 xfs_disk_dquot_t *ddq;
596 xfs_dquot_t *dqp;
597 xfs_trans_t *tp;
598 int error;
599 xfs_qcnt_t hard, soft;
600
601 if (!capable(CAP_SYS_ADMIN))
602 return XFS_ERROR(EPERM);
603
604 if ((newlim->d_fieldmask &
605 (FS_DQ_LIMIT_MASK|FS_DQ_TIMER_MASK|FS_DQ_WARNS_MASK)) == 0)
606 return (0);
607
608 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SETQLIM);
609 if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_disk_dquot_t) + 128,
610 0, 0, XFS_DEFAULT_LOG_COUNT))) {
611 xfs_trans_cancel(tp, 0);
612 return (error);
613 }
614
615 /*
616 * We don't want to race with a quotaoff so take the quotaoff lock.
617 * (We don't hold an inode lock, so there's nothing else to stop
618 * a quotaoff from happening). (XXXThis doesn't currently happen
619 * because we take the vfslock before calling xfs_qm_sysent).
620 */
621 mutex_lock(&(XFS_QI_QOFFLOCK(mp)));
622
623 /*
624 * Get the dquot (locked), and join it to the transaction.
625 * Allocate the dquot if this doesn't exist.
626 */
627 if ((error = xfs_qm_dqget(mp, NULL, id, type, XFS_QMOPT_DQALLOC, &dqp))) {
628 xfs_trans_cancel(tp, XFS_TRANS_ABORT);
629 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
630 ASSERT(error != ENOENT);
631 return (error);
632 }
633 xfs_dqtrace_entry(dqp, "Q_SETQLIM: AFT DQGET");
634 xfs_trans_dqjoin(tp, dqp);
635 ddq = &dqp->q_core;
636
637 /*
638 * Make sure that hardlimits are >= soft limits before changing.
639 */
640 hard = (newlim->d_fieldmask & FS_DQ_BHARD) ?
641 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_hardlimit) :
642 be64_to_cpu(ddq->d_blk_hardlimit);
643 soft = (newlim->d_fieldmask & FS_DQ_BSOFT) ?
644 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_softlimit) :
645 be64_to_cpu(ddq->d_blk_softlimit);
646 if (hard == 0 || hard >= soft) {
647 ddq->d_blk_hardlimit = cpu_to_be64(hard);
648 ddq->d_blk_softlimit = cpu_to_be64(soft);
649 if (id == 0) {
650 mp->m_quotainfo->qi_bhardlimit = hard;
651 mp->m_quotainfo->qi_bsoftlimit = soft;
652 }
653 } else {
654 qdprintk("blkhard %Ld < blksoft %Ld\n", hard, soft);
655 }
656 hard = (newlim->d_fieldmask & FS_DQ_RTBHARD) ?
657 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_hardlimit) :
658 be64_to_cpu(ddq->d_rtb_hardlimit);
659 soft = (newlim->d_fieldmask & FS_DQ_RTBSOFT) ?
660 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_softlimit) :
661 be64_to_cpu(ddq->d_rtb_softlimit);
662 if (hard == 0 || hard >= soft) {
663 ddq->d_rtb_hardlimit = cpu_to_be64(hard);
664 ddq->d_rtb_softlimit = cpu_to_be64(soft);
665 if (id == 0) {
666 mp->m_quotainfo->qi_rtbhardlimit = hard;
667 mp->m_quotainfo->qi_rtbsoftlimit = soft;
668 }
669 } else {
670 qdprintk("rtbhard %Ld < rtbsoft %Ld\n", hard, soft);
671 }
672
673 hard = (newlim->d_fieldmask & FS_DQ_IHARD) ?
674 (xfs_qcnt_t) newlim->d_ino_hardlimit :
675 be64_to_cpu(ddq->d_ino_hardlimit);
676 soft = (newlim->d_fieldmask & FS_DQ_ISOFT) ?
677 (xfs_qcnt_t) newlim->d_ino_softlimit :
678 be64_to_cpu(ddq->d_ino_softlimit);
679 if (hard == 0 || hard >= soft) {
680 ddq->d_ino_hardlimit = cpu_to_be64(hard);
681 ddq->d_ino_softlimit = cpu_to_be64(soft);
682 if (id == 0) {
683 mp->m_quotainfo->qi_ihardlimit = hard;
684 mp->m_quotainfo->qi_isoftlimit = soft;
685 }
686 } else {
687 qdprintk("ihard %Ld < isoft %Ld\n", hard, soft);
688 }
689
690 /*
691 * Update warnings counter(s) if requested
692 */
693 if (newlim->d_fieldmask & FS_DQ_BWARNS)
694 ddq->d_bwarns = cpu_to_be16(newlim->d_bwarns);
695 if (newlim->d_fieldmask & FS_DQ_IWARNS)
696 ddq->d_iwarns = cpu_to_be16(newlim->d_iwarns);
697 if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
698 ddq->d_rtbwarns = cpu_to_be16(newlim->d_rtbwarns);
699
700 if (id == 0) {
701 /*
702 * Timelimits for the super user set the relative time
703 * the other users can be over quota for this file system.
704 * If it is zero a default is used. Ditto for the default
705 * soft and hard limit values (already done, above), and
706 * for warnings.
707 */
708 if (newlim->d_fieldmask & FS_DQ_BTIMER) {
709 mp->m_quotainfo->qi_btimelimit = newlim->d_btimer;
710 ddq->d_btimer = cpu_to_be32(newlim->d_btimer);
711 }
712 if (newlim->d_fieldmask & FS_DQ_ITIMER) {
713 mp->m_quotainfo->qi_itimelimit = newlim->d_itimer;
714 ddq->d_itimer = cpu_to_be32(newlim->d_itimer);
715 }
716 if (newlim->d_fieldmask & FS_DQ_RTBTIMER) {
717 mp->m_quotainfo->qi_rtbtimelimit = newlim->d_rtbtimer;
718 ddq->d_rtbtimer = cpu_to_be32(newlim->d_rtbtimer);
719 }
720 if (newlim->d_fieldmask & FS_DQ_BWARNS)
721 mp->m_quotainfo->qi_bwarnlimit = newlim->d_bwarns;
722 if (newlim->d_fieldmask & FS_DQ_IWARNS)
723 mp->m_quotainfo->qi_iwarnlimit = newlim->d_iwarns;
724 if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
725 mp->m_quotainfo->qi_rtbwarnlimit = newlim->d_rtbwarns;
726 } else {
727 /*
728 * If the user is now over quota, start the timelimit.
729 * The user will not be 'warned'.
730 * Note that we keep the timers ticking, whether enforcement
731 * is on or off. We don't really want to bother with iterating
732 * over all ondisk dquots and turning the timers on/off.
733 */
734 xfs_qm_adjust_dqtimers(mp, ddq);
735 }
736 dqp->dq_flags |= XFS_DQ_DIRTY;
737 xfs_trans_log_dquot(tp, dqp);
738
739 xfs_dqtrace_entry(dqp, "Q_SETQLIM: COMMIT");
740 xfs_trans_commit(tp, 0, NULL);
741 xfs_qm_dqprint(dqp);
742 xfs_qm_dqrele(dqp);
743 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
744
745 return (0);
746 }
747
748 STATIC int
749 xfs_qm_scall_getquota(
750 xfs_mount_t *mp,
751 xfs_dqid_t id,
752 uint type,
753 fs_disk_quota_t *out)
754 {
755 xfs_dquot_t *dqp;
756 int error;
757
758 /*
759 * Try to get the dquot. We don't want it allocated on disk, so
760 * we aren't passing the XFS_QMOPT_DOALLOC flag. If it doesn't
761 * exist, we'll get ENOENT back.
762 */
763 if ((error = xfs_qm_dqget(mp, NULL, id, type, 0, &dqp))) {
764 return (error);
765 }
766
767 xfs_dqtrace_entry(dqp, "Q_GETQUOTA SUCCESS");
768 /*
769 * If everything's NULL, this dquot doesn't quite exist as far as
770 * our utility programs are concerned.
771 */
772 if (XFS_IS_DQUOT_UNINITIALIZED(dqp)) {
773 xfs_qm_dqput(dqp);
774 return XFS_ERROR(ENOENT);
775 }
776 /* xfs_qm_dqprint(dqp); */
777 /*
778 * Convert the disk dquot to the exportable format
779 */
780 xfs_qm_export_dquot(mp, &dqp->q_core, out);
781 xfs_qm_dqput(dqp);
782 return (error ? XFS_ERROR(EFAULT) : 0);
783 }
784
785
786 STATIC int
787 xfs_qm_log_quotaoff_end(
788 xfs_mount_t *mp,
789 xfs_qoff_logitem_t *startqoff,
790 uint flags)
791 {
792 xfs_trans_t *tp;
793 int error;
794 xfs_qoff_logitem_t *qoffi;
795
796 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF_END);
797
798 if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_qoff_logitem_t) * 2,
799 0, 0, XFS_DEFAULT_LOG_COUNT))) {
800 xfs_trans_cancel(tp, 0);
801 return (error);
802 }
803
804 qoffi = xfs_trans_get_qoff_item(tp, startqoff,
805 flags & XFS_ALL_QUOTA_ACCT);
806 xfs_trans_log_quotaoff_item(tp, qoffi);
807
808 /*
809 * We have to make sure that the transaction is secure on disk before we
810 * return and actually stop quota accounting. So, make it synchronous.
811 * We don't care about quotoff's performance.
812 */
813 xfs_trans_set_sync(tp);
814 error = xfs_trans_commit(tp, 0, NULL);
815 return (error);
816 }
817
818
819 STATIC int
820 xfs_qm_log_quotaoff(
821 xfs_mount_t *mp,
822 xfs_qoff_logitem_t **qoffstartp,
823 uint flags)
824 {
825 xfs_trans_t *tp;
826 int error;
827 unsigned long s;
828 xfs_qoff_logitem_t *qoffi=NULL;
829 uint oldsbqflag=0;
830
831 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF);
832 if ((error = xfs_trans_reserve(tp, 0,
833 sizeof(xfs_qoff_logitem_t) * 2 +
834 mp->m_sb.sb_sectsize + 128,
835 0,
836 0,
837 XFS_DEFAULT_LOG_COUNT))) {
838 goto error0;
839 }
840
841 qoffi = xfs_trans_get_qoff_item(tp, NULL, flags & XFS_ALL_QUOTA_ACCT);
842 xfs_trans_log_quotaoff_item(tp, qoffi);
843
844 s = XFS_SB_LOCK(mp);
845 oldsbqflag = mp->m_sb.sb_qflags;
846 mp->m_sb.sb_qflags = (mp->m_qflags & ~(flags)) & XFS_MOUNT_QUOTA_ALL;
847 XFS_SB_UNLOCK(mp, s);
848
849 xfs_mod_sb(tp, XFS_SB_QFLAGS);
850
851 /*
852 * We have to make sure that the transaction is secure on disk before we
853 * return and actually stop quota accounting. So, make it synchronous.
854 * We don't care about quotoff's performance.
855 */
856 xfs_trans_set_sync(tp);
857 error = xfs_trans_commit(tp, 0, NULL);
858
859 error0:
860 if (error) {
861 xfs_trans_cancel(tp, 0);
862 /*
863 * No one else is modifying sb_qflags, so this is OK.
864 * We still hold the quotaofflock.
865 */
866 s = XFS_SB_LOCK(mp);
867 mp->m_sb.sb_qflags = oldsbqflag;
868 XFS_SB_UNLOCK(mp, s);
869 }
870 *qoffstartp = qoffi;
871 return (error);
872 }
873
874
875 /*
876 * Translate an internal style on-disk-dquot to the exportable format.
877 * The main differences are that the counters/limits are all in Basic
878 * Blocks (BBs) instead of the internal FSBs, and all on-disk data has
879 * to be converted to the native endianness.
880 */
881 STATIC void
882 xfs_qm_export_dquot(
883 xfs_mount_t *mp,
884 xfs_disk_dquot_t *src,
885 struct fs_disk_quota *dst)
886 {
887 memset(dst, 0, sizeof(*dst));
888 dst->d_version = FS_DQUOT_VERSION; /* different from src->d_version */
889 dst->d_flags = xfs_qm_export_qtype_flags(src->d_flags);
890 dst->d_id = be32_to_cpu(src->d_id);
891 dst->d_blk_hardlimit =
892 XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_blk_hardlimit));
893 dst->d_blk_softlimit =
894 XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_blk_softlimit));
895 dst->d_ino_hardlimit = be64_to_cpu(src->d_ino_hardlimit);
896 dst->d_ino_softlimit = be64_to_cpu(src->d_ino_softlimit);
897 dst->d_bcount = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_bcount));
898 dst->d_icount = be64_to_cpu(src->d_icount);
899 dst->d_btimer = be32_to_cpu(src->d_btimer);
900 dst->d_itimer = be32_to_cpu(src->d_itimer);
901 dst->d_iwarns = be16_to_cpu(src->d_iwarns);
902 dst->d_bwarns = be16_to_cpu(src->d_bwarns);
903 dst->d_rtb_hardlimit =
904 XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtb_hardlimit));
905 dst->d_rtb_softlimit =
906 XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtb_softlimit));
907 dst->d_rtbcount = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtbcount));
908 dst->d_rtbtimer = be32_to_cpu(src->d_rtbtimer);
909 dst->d_rtbwarns = be16_to_cpu(src->d_rtbwarns);
910
911 /*
912 * Internally, we don't reset all the timers when quota enforcement
913 * gets turned off. No need to confuse the user level code,
914 * so return zeroes in that case.
915 */
916 if (! XFS_IS_QUOTA_ENFORCED(mp)) {
917 dst->d_btimer = 0;
918 dst->d_itimer = 0;
919 dst->d_rtbtimer = 0;
920 }
921
922 #ifdef DEBUG
923 if (XFS_IS_QUOTA_ENFORCED(mp) && dst->d_id != 0) {
924 if (((int) dst->d_bcount >= (int) dst->d_blk_softlimit) &&
925 (dst->d_blk_softlimit > 0)) {
926 ASSERT(dst->d_btimer != 0);
927 }
928 if (((int) dst->d_icount >= (int) dst->d_ino_softlimit) &&
929 (dst->d_ino_softlimit > 0)) {
930 ASSERT(dst->d_itimer != 0);
931 }
932 }
933 #endif
934 }
935
936 STATIC uint
937 xfs_qm_import_qtype_flags(
938 uint uflags)
939 {
940 uint oflags = 0;
941
942 /*
943 * Can't be more than one, or none.
944 */
945 if (((uflags & (XFS_GROUP_QUOTA | XFS_USER_QUOTA)) ==
946 (XFS_GROUP_QUOTA | XFS_USER_QUOTA)) ||
947 ((uflags & (XFS_GROUP_QUOTA | XFS_PROJ_QUOTA)) ==
948 (XFS_GROUP_QUOTA | XFS_PROJ_QUOTA)) ||
949 ((uflags & (XFS_USER_QUOTA | XFS_PROJ_QUOTA)) ==
950 (XFS_USER_QUOTA | XFS_PROJ_QUOTA)) ||
951 ((uflags & (XFS_GROUP_QUOTA|XFS_USER_QUOTA|XFS_PROJ_QUOTA)) == 0))
952 return (0);
953
954 oflags |= (uflags & XFS_USER_QUOTA) ? XFS_DQ_USER : 0;
955 oflags |= (uflags & XFS_PROJ_QUOTA) ? XFS_DQ_PROJ : 0;
956 oflags |= (uflags & XFS_GROUP_QUOTA) ? XFS_DQ_GROUP: 0;
957 return oflags;
958 }
959
960 STATIC uint
961 xfs_qm_export_qtype_flags(
962 uint flags)
963 {
964 /*
965 * Can't be more than one, or none.
966 */
967 ASSERT((flags & (XFS_PROJ_QUOTA | XFS_USER_QUOTA)) !=
968 (XFS_PROJ_QUOTA | XFS_USER_QUOTA));
969 ASSERT((flags & (XFS_PROJ_QUOTA | XFS_GROUP_QUOTA)) !=
970 (XFS_PROJ_QUOTA | XFS_GROUP_QUOTA));
971 ASSERT((flags & (XFS_USER_QUOTA | XFS_GROUP_QUOTA)) !=
972 (XFS_USER_QUOTA | XFS_GROUP_QUOTA));
973 ASSERT((flags & (XFS_PROJ_QUOTA|XFS_USER_QUOTA|XFS_GROUP_QUOTA)) != 0);
974
975 return (flags & XFS_DQ_USER) ?
976 XFS_USER_QUOTA : (flags & XFS_DQ_PROJ) ?
977 XFS_PROJ_QUOTA : XFS_GROUP_QUOTA;
978 }
979
980 STATIC uint
981 xfs_qm_import_flags(
982 uint uflags)
983 {
984 uint flags = 0;
985
986 if (uflags & XFS_QUOTA_UDQ_ACCT)
987 flags |= XFS_UQUOTA_ACCT;
988 if (uflags & XFS_QUOTA_PDQ_ACCT)
989 flags |= XFS_PQUOTA_ACCT;
990 if (uflags & XFS_QUOTA_GDQ_ACCT)
991 flags |= XFS_GQUOTA_ACCT;
992 if (uflags & XFS_QUOTA_UDQ_ENFD)
993 flags |= XFS_UQUOTA_ENFD;
994 if (uflags & (XFS_QUOTA_PDQ_ENFD|XFS_QUOTA_GDQ_ENFD))
995 flags |= XFS_OQUOTA_ENFD;
996 return (flags);
997 }
998
999
1000 STATIC uint
1001 xfs_qm_export_flags(
1002 uint flags)
1003 {
1004 uint uflags;
1005
1006 uflags = 0;
1007 if (flags & XFS_UQUOTA_ACCT)
1008 uflags |= XFS_QUOTA_UDQ_ACCT;
1009 if (flags & XFS_PQUOTA_ACCT)
1010 uflags |= XFS_QUOTA_PDQ_ACCT;
1011 if (flags & XFS_GQUOTA_ACCT)
1012 uflags |= XFS_QUOTA_GDQ_ACCT;
1013 if (flags & XFS_UQUOTA_ENFD)
1014 uflags |= XFS_QUOTA_UDQ_ENFD;
1015 if (flags & (XFS_OQUOTA_ENFD)) {
1016 uflags |= (flags & XFS_GQUOTA_ACCT) ?
1017 XFS_QUOTA_GDQ_ENFD : XFS_QUOTA_PDQ_ENFD;
1018 }
1019 return (uflags);
1020 }
1021
1022
1023 /*
1024 * Go thru all the inodes in the file system, releasing their dquots.
1025 * Note that the mount structure gets modified to indicate that quotas are off
1026 * AFTER this, in the case of quotaoff. This also gets called from
1027 * xfs_rootumount.
1028 */
1029 void
1030 xfs_qm_dqrele_all_inodes(
1031 struct xfs_mount *mp,
1032 uint flags)
1033 {
1034 xfs_inode_t *ip, *topino;
1035 uint ireclaims;
1036 bhv_vnode_t *vp;
1037 boolean_t vnode_refd;
1038
1039 ASSERT(mp->m_quotainfo);
1040
1041 XFS_MOUNT_ILOCK(mp);
1042 again:
1043 ip = mp->m_inodes;
1044 if (ip == NULL) {
1045 XFS_MOUNT_IUNLOCK(mp);
1046 return;
1047 }
1048 do {
1049 /* Skip markers inserted by xfs_sync */
1050 if (ip->i_mount == NULL) {
1051 ip = ip->i_mnext;
1052 continue;
1053 }
1054 /* Root inode, rbmip and rsumip have associated blocks */
1055 if (ip == XFS_QI_UQIP(mp) || ip == XFS_QI_GQIP(mp)) {
1056 ASSERT(ip->i_udquot == NULL);
1057 ASSERT(ip->i_gdquot == NULL);
1058 ip = ip->i_mnext;
1059 continue;
1060 }
1061 vp = XFS_ITOV_NULL(ip);
1062 if (!vp) {
1063 ASSERT(ip->i_udquot == NULL);
1064 ASSERT(ip->i_gdquot == NULL);
1065 ip = ip->i_mnext;
1066 continue;
1067 }
1068 vnode_refd = B_FALSE;
1069 if (xfs_ilock_nowait(ip, XFS_ILOCK_EXCL) == 0) {
1070 ireclaims = mp->m_ireclaims;
1071 topino = mp->m_inodes;
1072 vp = vn_grab(vp);
1073 if (!vp)
1074 goto again;
1075
1076 XFS_MOUNT_IUNLOCK(mp);
1077 /* XXX restart limit ? */
1078 xfs_ilock(ip, XFS_ILOCK_EXCL);
1079 vnode_refd = B_TRUE;
1080 } else {
1081 ireclaims = mp->m_ireclaims;
1082 topino = mp->m_inodes;
1083 XFS_MOUNT_IUNLOCK(mp);
1084 }
1085
1086 /*
1087 * We don't keep the mountlock across the dqrele() call,
1088 * since it can take a while..
1089 */
1090 if ((flags & XFS_UQUOTA_ACCT) && ip->i_udquot) {
1091 xfs_qm_dqrele(ip->i_udquot);
1092 ip->i_udquot = NULL;
1093 }
1094 if (flags & (XFS_PQUOTA_ACCT|XFS_GQUOTA_ACCT) && ip->i_gdquot) {
1095 xfs_qm_dqrele(ip->i_gdquot);
1096 ip->i_gdquot = NULL;
1097 }
1098 xfs_iunlock(ip, XFS_ILOCK_EXCL);
1099 /*
1100 * Wait until we've dropped the ilock and mountlock to
1101 * do the vn_rele. Or be condemned to an eternity in the
1102 * inactive code in hell.
1103 */
1104 if (vnode_refd)
1105 VN_RELE(vp);
1106 XFS_MOUNT_ILOCK(mp);
1107 /*
1108 * If an inode was inserted or removed, we gotta
1109 * start over again.
1110 */
1111 if (topino != mp->m_inodes || mp->m_ireclaims != ireclaims) {
1112 /* XXX use a sentinel */
1113 goto again;
1114 }
1115 ip = ip->i_mnext;
1116 } while (ip != mp->m_inodes);
1117
1118 XFS_MOUNT_IUNLOCK(mp);
1119 }
1120
1121 /*------------------------------------------------------------------------*/
1122 #ifdef DEBUG
1123 /*
1124 * This contains all the test functions for XFS disk quotas.
1125 * Currently it does a quota accounting check. ie. it walks through
1126 * all inodes in the file system, calculating the dquot accounting fields,
1127 * and prints out any inconsistencies.
1128 */
1129 xfs_dqhash_t *qmtest_udqtab;
1130 xfs_dqhash_t *qmtest_gdqtab;
1131 int qmtest_hashmask;
1132 int qmtest_nfails;
1133 mutex_t qcheck_lock;
1134
1135 #define DQTEST_HASHVAL(mp, id) (((__psunsigned_t)(mp) + \
1136 (__psunsigned_t)(id)) & \
1137 (qmtest_hashmask - 1))
1138
1139 #define DQTEST_HASH(mp, id, type) ((type & XFS_DQ_USER) ? \
1140 (qmtest_udqtab + \
1141 DQTEST_HASHVAL(mp, id)) : \
1142 (qmtest_gdqtab + \
1143 DQTEST_HASHVAL(mp, id)))
1144
1145 #define DQTEST_LIST_PRINT(l, NXT, title) \
1146 { \
1147 xfs_dqtest_t *dqp; int i = 0;\
1148 cmn_err(CE_DEBUG, "%s (#%d)", title, (int) (l)->qh_nelems); \
1149 for (dqp = (xfs_dqtest_t *)(l)->qh_next; dqp != NULL; \
1150 dqp = (xfs_dqtest_t *)dqp->NXT) { \
1151 cmn_err(CE_DEBUG, " %d. \"%d (%s)\" bcnt = %d, icnt = %d", \
1152 ++i, dqp->d_id, DQFLAGTO_TYPESTR(dqp), \
1153 dqp->d_bcount, dqp->d_icount); } \
1154 }
1155
1156 typedef struct dqtest {
1157 xfs_dqmarker_t q_lists;
1158 xfs_dqhash_t *q_hash; /* the hashchain header */
1159 xfs_mount_t *q_mount; /* filesystem this relates to */
1160 xfs_dqid_t d_id; /* user id or group id */
1161 xfs_qcnt_t d_bcount; /* # disk blocks owned by the user */
1162 xfs_qcnt_t d_icount; /* # inodes owned by the user */
1163 } xfs_dqtest_t;
1164
1165 STATIC void
1166 xfs_qm_hashinsert(xfs_dqhash_t *h, xfs_dqtest_t *dqp)
1167 {
1168 xfs_dquot_t *d;
1169 if (((d) = (h)->qh_next))
1170 (d)->HL_PREVP = &((dqp)->HL_NEXT);
1171 (dqp)->HL_NEXT = d;
1172 (dqp)->HL_PREVP = &((h)->qh_next);
1173 (h)->qh_next = (xfs_dquot_t *)dqp;
1174 (h)->qh_version++;
1175 (h)->qh_nelems++;
1176 }
1177 STATIC void
1178 xfs_qm_dqtest_print(
1179 xfs_dqtest_t *d)
1180 {
1181 cmn_err(CE_DEBUG, "-----------DQTEST DQUOT----------------");
1182 cmn_err(CE_DEBUG, "---- dquot ID = %d", d->d_id);
1183 cmn_err(CE_DEBUG, "---- fs = 0x%p", d->q_mount);
1184 cmn_err(CE_DEBUG, "---- bcount = %Lu (0x%x)",
1185 d->d_bcount, (int)d->d_bcount);
1186 cmn_err(CE_DEBUG, "---- icount = %Lu (0x%x)",
1187 d->d_icount, (int)d->d_icount);
1188 cmn_err(CE_DEBUG, "---------------------------");
1189 }
1190
1191 STATIC void
1192 xfs_qm_dqtest_failed(
1193 xfs_dqtest_t *d,
1194 xfs_dquot_t *dqp,
1195 char *reason,
1196 xfs_qcnt_t a,
1197 xfs_qcnt_t b,
1198 int error)
1199 {
1200 qmtest_nfails++;
1201 if (error)
1202 cmn_err(CE_DEBUG, "quotacheck failed id=%d, err=%d\nreason: %s",
1203 d->d_id, error, reason);
1204 else
1205 cmn_err(CE_DEBUG, "quotacheck failed id=%d (%s) [%d != %d]",
1206 d->d_id, reason, (int)a, (int)b);
1207 xfs_qm_dqtest_print(d);
1208 if (dqp)
1209 xfs_qm_dqprint(dqp);
1210 }
1211
1212 STATIC int
1213 xfs_dqtest_cmp2(
1214 xfs_dqtest_t *d,
1215 xfs_dquot_t *dqp)
1216 {
1217 int err = 0;
1218 if (be64_to_cpu(dqp->q_core.d_icount) != d->d_icount) {
1219 xfs_qm_dqtest_failed(d, dqp, "icount mismatch",
1220 be64_to_cpu(dqp->q_core.d_icount),
1221 d->d_icount, 0);
1222 err++;
1223 }
1224 if (be64_to_cpu(dqp->q_core.d_bcount) != d->d_bcount) {
1225 xfs_qm_dqtest_failed(d, dqp, "bcount mismatch",
1226 be64_to_cpu(dqp->q_core.d_bcount),
1227 d->d_bcount, 0);
1228 err++;
1229 }
1230 if (dqp->q_core.d_blk_softlimit &&
1231 be64_to_cpu(dqp->q_core.d_bcount) >=
1232 be64_to_cpu(dqp->q_core.d_blk_softlimit)) {
1233 if (!dqp->q_core.d_btimer && dqp->q_core.d_id) {
1234 cmn_err(CE_DEBUG,
1235 "%d [%s] [0x%p] BLK TIMER NOT STARTED",
1236 d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
1237 err++;
1238 }
1239 }
1240 if (dqp->q_core.d_ino_softlimit &&
1241 be64_to_cpu(dqp->q_core.d_icount) >=
1242 be64_to_cpu(dqp->q_core.d_ino_softlimit)) {
1243 if (!dqp->q_core.d_itimer && dqp->q_core.d_id) {
1244 cmn_err(CE_DEBUG,
1245 "%d [%s] [0x%p] INO TIMER NOT STARTED",
1246 d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
1247 err++;
1248 }
1249 }
1250 #ifdef QUOTADEBUG
1251 if (!err) {
1252 cmn_err(CE_DEBUG, "%d [%s] [0x%p] qchecked",
1253 d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
1254 }
1255 #endif
1256 return (err);
1257 }
1258
1259 STATIC void
1260 xfs_dqtest_cmp(
1261 xfs_dqtest_t *d)
1262 {
1263 xfs_dquot_t *dqp;
1264 int error;
1265
1266 /* xfs_qm_dqtest_print(d); */
1267 if ((error = xfs_qm_dqget(d->q_mount, NULL, d->d_id, d->dq_flags, 0,
1268 &dqp))) {
1269 xfs_qm_dqtest_failed(d, NULL, "dqget failed", 0, 0, error);
1270 return;
1271 }
1272 xfs_dqtest_cmp2(d, dqp);
1273 xfs_qm_dqput(dqp);
1274 }
1275
1276 STATIC int
1277 xfs_qm_internalqcheck_dqget(
1278 xfs_mount_t *mp,
1279 xfs_dqid_t id,
1280 uint type,
1281 xfs_dqtest_t **O_dq)
1282 {
1283 xfs_dqtest_t *d;
1284 xfs_dqhash_t *h;
1285
1286 h = DQTEST_HASH(mp, id, type);
1287 for (d = (xfs_dqtest_t *) h->qh_next; d != NULL;
1288 d = (xfs_dqtest_t *) d->HL_NEXT) {
1289 /* DQTEST_LIST_PRINT(h, HL_NEXT, "@@@@@ dqtestlist @@@@@"); */
1290 if (d->d_id == id && mp == d->q_mount) {
1291 *O_dq = d;
1292 return (0);
1293 }
1294 }
1295 d = kmem_zalloc(sizeof(xfs_dqtest_t), KM_SLEEP);
1296 d->dq_flags = type;
1297 d->d_id = id;
1298 d->q_mount = mp;
1299 d->q_hash = h;
1300 xfs_qm_hashinsert(h, d);
1301 *O_dq = d;
1302 return (0);
1303 }
1304
1305 STATIC void
1306 xfs_qm_internalqcheck_get_dquots(
1307 xfs_mount_t *mp,
1308 xfs_dqid_t uid,
1309 xfs_dqid_t projid,
1310 xfs_dqid_t gid,
1311 xfs_dqtest_t **ud,
1312 xfs_dqtest_t **gd)
1313 {
1314 if (XFS_IS_UQUOTA_ON(mp))
1315 xfs_qm_internalqcheck_dqget(mp, uid, XFS_DQ_USER, ud);
1316 if (XFS_IS_GQUOTA_ON(mp))
1317 xfs_qm_internalqcheck_dqget(mp, gid, XFS_DQ_GROUP, gd);
1318 else if (XFS_IS_PQUOTA_ON(mp))
1319 xfs_qm_internalqcheck_dqget(mp, projid, XFS_DQ_PROJ, gd);
1320 }
1321
1322
1323 STATIC void
1324 xfs_qm_internalqcheck_dqadjust(
1325 xfs_inode_t *ip,
1326 xfs_dqtest_t *d)
1327 {
1328 d->d_icount++;
1329 d->d_bcount += (xfs_qcnt_t)ip->i_d.di_nblocks;
1330 }
1331
1332 STATIC int
1333 xfs_qm_internalqcheck_adjust(
1334 xfs_mount_t *mp, /* mount point for filesystem */
1335 xfs_ino_t ino, /* inode number to get data for */
1336 void __user *buffer, /* not used */
1337 int ubsize, /* not used */
1338 void *private_data, /* not used */
1339 xfs_daddr_t bno, /* starting block of inode cluster */
1340 int *ubused, /* not used */
1341 void *dip, /* not used */
1342 int *res) /* bulkstat result code */
1343 {
1344 xfs_inode_t *ip;
1345 xfs_dqtest_t *ud, *gd;
1346 uint lock_flags;
1347 boolean_t ipreleased;
1348 int error;
1349
1350 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1351
1352 if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) {
1353 *res = BULKSTAT_RV_NOTHING;
1354 qdprintk("internalqcheck: ino=%llu, uqino=%llu, gqino=%llu\n",
1355 (unsigned long long) ino,
1356 (unsigned long long) mp->m_sb.sb_uquotino,
1357 (unsigned long long) mp->m_sb.sb_gquotino);
1358 return XFS_ERROR(EINVAL);
1359 }
1360 ipreleased = B_FALSE;
1361 again:
1362 lock_flags = XFS_ILOCK_SHARED;
1363 if ((error = xfs_iget(mp, NULL, ino, 0, lock_flags, &ip, bno))) {
1364 *res = BULKSTAT_RV_NOTHING;
1365 return (error);
1366 }
1367
1368 if (ip->i_d.di_mode == 0) {
1369 xfs_iput_new(ip, lock_flags);
1370 *res = BULKSTAT_RV_NOTHING;
1371 return XFS_ERROR(ENOENT);
1372 }
1373
1374 /*
1375 * This inode can have blocks after eof which can get released
1376 * when we send it to inactive. Since we don't check the dquot
1377 * until the after all our calculations are done, we must get rid
1378 * of those now.
1379 */
1380 if (! ipreleased) {
1381 xfs_iput(ip, lock_flags);
1382 ipreleased = B_TRUE;
1383 goto again;
1384 }
1385 xfs_qm_internalqcheck_get_dquots(mp,
1386 (xfs_dqid_t) ip->i_d.di_uid,
1387 (xfs_dqid_t) ip->i_d.di_projid,
1388 (xfs_dqid_t) ip->i_d.di_gid,
1389 &ud, &gd);
1390 if (XFS_IS_UQUOTA_ON(mp)) {
1391 ASSERT(ud);
1392 xfs_qm_internalqcheck_dqadjust(ip, ud);
1393 }
1394 if (XFS_IS_OQUOTA_ON(mp)) {
1395 ASSERT(gd);
1396 xfs_qm_internalqcheck_dqadjust(ip, gd);
1397 }
1398 xfs_iput(ip, lock_flags);
1399 *res = BULKSTAT_RV_DIDONE;
1400 return (0);
1401 }
1402
1403
1404 /* PRIVATE, debugging */
1405 int
1406 xfs_qm_internalqcheck(
1407 xfs_mount_t *mp)
1408 {
1409 xfs_ino_t lastino;
1410 int done, count;
1411 int i;
1412 xfs_dqtest_t *d, *e;
1413 xfs_dqhash_t *h1;
1414 int error;
1415
1416 lastino = 0;
1417 qmtest_hashmask = 32;
1418 count = 5;
1419 done = 0;
1420 qmtest_nfails = 0;
1421
1422 if (! XFS_IS_QUOTA_ON(mp))
1423 return XFS_ERROR(ESRCH);
1424
1425 xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC);
1426 XFS_bflush(mp->m_ddev_targp);
1427 xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC);
1428 XFS_bflush(mp->m_ddev_targp);
1429
1430 mutex_lock(&qcheck_lock);
1431 /* There should be absolutely no quota activity while this
1432 is going on. */
1433 qmtest_udqtab = kmem_zalloc(qmtest_hashmask *
1434 sizeof(xfs_dqhash_t), KM_SLEEP);
1435 qmtest_gdqtab = kmem_zalloc(qmtest_hashmask *
1436 sizeof(xfs_dqhash_t), KM_SLEEP);
1437 do {
1438 /*
1439 * Iterate thru all the inodes in the file system,
1440 * adjusting the corresponding dquot counters
1441 */
1442 if ((error = xfs_bulkstat(mp, &lastino, &count,
1443 xfs_qm_internalqcheck_adjust, NULL,
1444 0, NULL, BULKSTAT_FG_IGET, &done))) {
1445 break;
1446 }
1447 } while (! done);
1448 if (error) {
1449 cmn_err(CE_DEBUG, "Bulkstat returned error 0x%x", error);
1450 }
1451 cmn_err(CE_DEBUG, "Checking results against system dquots");
1452 for (i = 0; i < qmtest_hashmask; i++) {
1453 h1 = &qmtest_udqtab[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 h1 = &qmtest_gdqtab[i];
1461 for (d = (xfs_dqtest_t *) h1->qh_next; d != NULL; ) {
1462 xfs_dqtest_cmp(d);
1463 e = (xfs_dqtest_t *) d->HL_NEXT;
1464 kmem_free(d, sizeof(xfs_dqtest_t));
1465 d = e;
1466 }
1467 }
1468
1469 if (qmtest_nfails) {
1470 cmn_err(CE_DEBUG, "******** quotacheck failed ********");
1471 cmn_err(CE_DEBUG, "failures = %d", qmtest_nfails);
1472 } else {
1473 cmn_err(CE_DEBUG, "******** quotacheck successful! ********");
1474 }
1475 kmem_free(qmtest_udqtab, qmtest_hashmask * sizeof(xfs_dqhash_t));
1476 kmem_free(qmtest_gdqtab, qmtest_hashmask * sizeof(xfs_dqhash_t));
1477 mutex_unlock(&qcheck_lock);
1478 return (qmtest_nfails);
1479 }
1480
1481 #endif /* DEBUG */
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