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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/xfs/quota/xfs_qm_syscalls.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'fs/xfs/quota/xfs_qm_syscalls.c')
-rw-r--r--fs/xfs/quota/xfs_qm_syscalls.c1458
1 files changed, 1458 insertions, 0 deletions
diff --git a/fs/xfs/quota/xfs_qm_syscalls.c b/fs/xfs/quota/xfs_qm_syscalls.c
new file mode 100644
index 000000000000..229f5b5a2d25
--- /dev/null
+++ b/fs/xfs/quota/xfs_qm_syscalls.c
@@ -0,0 +1,1458 @@
1/*
2 * Copyright (c) 2000-2003 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"
35#include "xfs_inum.h"
36#include "xfs_log.h"
37#include "xfs_trans.h"
38#include "xfs_sb.h"
39#include "xfs_dir.h"
40#include "xfs_dir2.h"
41#include "xfs_alloc.h"
42#include "xfs_dmapi.h"
43#include "xfs_quota.h"
44#include "xfs_mount.h"
45#include "xfs_alloc_btree.h"
46#include "xfs_bmap_btree.h"
47#include "xfs_ialloc_btree.h"
48#include "xfs_btree.h"
49#include "xfs_ialloc.h"
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"
55#include "xfs_bmap.h"
56#include "xfs_bit.h"
57#include "xfs_rtalloc.h"
58#include "xfs_error.h"
59#include "xfs_itable.h"
60#include "xfs_rw.h"
61#include "xfs_acl.h"
62#include "xfs_cap.h"
63#include "xfs_mac.h"
64#include "xfs_attr.h"
65#include "xfs_buf_item.h"
66#include "xfs_utils.h"
67
68#include "xfs_qm.h"
69
70#ifdef DEBUG
71# define qdprintk(s, args...) cmn_err(CE_DEBUG, s, ## args)
72#else
73# define qdprintk(s, args...) do { } while (0)
74#endif
75
76STATIC int xfs_qm_scall_trunc_qfiles(xfs_mount_t *, uint);
77STATIC int xfs_qm_scall_getquota(xfs_mount_t *, xfs_dqid_t, uint,
78 fs_disk_quota_t *);
79STATIC int xfs_qm_scall_getqstat(xfs_mount_t *, fs_quota_stat_t *);
80STATIC int xfs_qm_scall_setqlim(xfs_mount_t *, xfs_dqid_t, uint,
81 fs_disk_quota_t *);
82STATIC int xfs_qm_scall_quotaon(xfs_mount_t *, uint);
83STATIC int xfs_qm_scall_quotaoff(xfs_mount_t *, uint, boolean_t);
84STATIC int xfs_qm_log_quotaoff(xfs_mount_t *, xfs_qoff_logitem_t **, uint);
85STATIC int xfs_qm_log_quotaoff_end(xfs_mount_t *, xfs_qoff_logitem_t *,
86 uint);
87STATIC uint xfs_qm_import_flags(uint);
88STATIC uint xfs_qm_export_flags(uint);
89STATIC uint xfs_qm_import_qtype_flags(uint);
90STATIC uint xfs_qm_export_qtype_flags(uint);
91STATIC void xfs_qm_export_dquot(xfs_mount_t *, xfs_disk_dquot_t *,
92 fs_disk_quota_t *);
93
94
95/*
96 * The main distribution switch of all XFS quotactl system calls.
97 */
98int
99xfs_qm_quotactl(
100 struct bhv_desc *bdp,
101 int cmd,
102 int id,
103 xfs_caddr_t addr)
104{
105 xfs_mount_t *mp;
106 int error;
107 struct vfs *vfsp;
108
109 vfsp = bhvtovfs(bdp);
110 mp = XFS_VFSTOM(vfsp);
111
112 if (addr == NULL && cmd != Q_SYNC)
113 return XFS_ERROR(EINVAL);
114 if (id < 0 && cmd != Q_SYNC)
115 return XFS_ERROR(EINVAL);
116
117 /*
118 * The following commands are valid even when quotaoff.
119 */
120 switch (cmd) {
121 /*
122 * truncate quota files. quota must be off.
123 */
124 case Q_XQUOTARM:
125 if (XFS_IS_QUOTA_ON(mp) || addr == NULL)
126 return XFS_ERROR(EINVAL);
127 if (vfsp->vfs_flag & VFS_RDONLY)
128 return XFS_ERROR(EROFS);
129 return (xfs_qm_scall_trunc_qfiles(mp,
130 xfs_qm_import_qtype_flags(*(uint *)addr)));
131 /*
132 * Get quota status information.
133 */
134 case Q_XGETQSTAT:
135 return (xfs_qm_scall_getqstat(mp, (fs_quota_stat_t *)addr));
136
137 /*
138 * QUOTAON for root f/s and quota enforcement on others..
139 * Quota accounting for non-root f/s's must be turned on
140 * at mount time.
141 */
142 case Q_XQUOTAON:
143 if (addr == NULL)
144 return XFS_ERROR(EINVAL);
145 if (vfsp->vfs_flag & VFS_RDONLY)
146 return XFS_ERROR(EROFS);
147 return (xfs_qm_scall_quotaon(mp,
148 xfs_qm_import_flags(*(uint *)addr)));
149 case Q_XQUOTAOFF:
150 if (vfsp->vfs_flag & VFS_RDONLY)
151 return XFS_ERROR(EROFS);
152 break;
153
154 default:
155 break;
156 }
157
158 if (! XFS_IS_QUOTA_ON(mp))
159 return XFS_ERROR(ESRCH);
160
161 switch (cmd) {
162 case Q_XQUOTAOFF:
163 if (vfsp->vfs_flag & VFS_RDONLY)
164 return XFS_ERROR(EROFS);
165 error = xfs_qm_scall_quotaoff(mp,
166 xfs_qm_import_flags(*(uint *)addr),
167 B_FALSE);
168 break;
169
170 /*
171 * Defaults to XFS_GETUQUOTA.
172 */
173 case Q_XGETQUOTA:
174 error = xfs_qm_scall_getquota(mp, (xfs_dqid_t)id, XFS_DQ_USER,
175 (fs_disk_quota_t *)addr);
176 break;
177 /*
178 * Set limits, both hard and soft. Defaults to Q_SETUQLIM.
179 */
180 case Q_XSETQLIM:
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_USER,
184 (fs_disk_quota_t *)addr);
185 break;
186
187 case Q_XSETGQLIM:
188 if (vfsp->vfs_flag & VFS_RDONLY)
189 return XFS_ERROR(EROFS);
190 error = xfs_qm_scall_setqlim(mp, (xfs_dqid_t)id, XFS_DQ_GROUP,
191 (fs_disk_quota_t *)addr);
192 break;
193
194
195 case Q_XGETGQUOTA:
196 error = xfs_qm_scall_getquota(mp, (xfs_dqid_t)id, XFS_DQ_GROUP,
197 (fs_disk_quota_t *)addr);
198 break;
199
200 /*
201 * Quotas are entirely undefined after quotaoff in XFS quotas.
202 * For instance, there's no way to set limits when quotaoff.
203 */
204
205 default:
206 error = XFS_ERROR(EINVAL);
207 break;
208 }
209
210 return (error);
211}
212
213/*
214 * Turn off quota accounting and/or enforcement for all udquots and/or
215 * gdquots. Called only at unmount time.
216 *
217 * This assumes that there are no dquots of this file system cached
218 * incore, and modifies the ondisk dquot directly. Therefore, for example,
219 * it is an error to call this twice, without purging the cache.
220 */
221STATIC int
222xfs_qm_scall_quotaoff(
223 xfs_mount_t *mp,
224 uint flags,
225 boolean_t force)
226{
227 uint dqtype;
228 unsigned long s;
229 int error;
230 uint inactivate_flags;
231 xfs_qoff_logitem_t *qoffstart;
232 int nculprits;
233
234 if (!force && !capable(CAP_SYS_ADMIN))
235 return XFS_ERROR(EPERM);
236 /*
237 * No file system can have quotas enabled on disk but not in core.
238 * Note that quota utilities (like quotaoff) _expect_
239 * errno == EEXIST here.
240 */
241 if ((mp->m_qflags & flags) == 0)
242 return XFS_ERROR(EEXIST);
243 error = 0;
244
245 flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
246
247 /*
248 * We don't want to deal with two quotaoffs messing up each other,
249 * so we're going to serialize it. quotaoff isn't exactly a performance
250 * critical thing.
251 * If quotaoff, then we must be dealing with the root filesystem.
252 */
253 ASSERT(mp->m_quotainfo);
254 if (mp->m_quotainfo)
255 mutex_lock(&(XFS_QI_QOFFLOCK(mp)), PINOD);
256
257 ASSERT(mp->m_quotainfo);
258
259 /*
260 * If we're just turning off quota enforcement, change mp and go.
261 */
262 if ((flags & XFS_ALL_QUOTA_ACCT) == 0) {
263 mp->m_qflags &= ~(flags);
264
265 s = XFS_SB_LOCK(mp);
266 mp->m_sb.sb_qflags = mp->m_qflags;
267 XFS_SB_UNLOCK(mp, s);
268 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
269
270 /* XXX what to do if error ? Revert back to old vals incore ? */
271 error = xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS);
272 return (error);
273 }
274
275 dqtype = 0;
276 inactivate_flags = 0;
277 /*
278 * If accounting is off, we must turn enforcement off, clear the
279 * quota 'CHKD' certificate to make it known that we have to
280 * do a quotacheck the next time this quota is turned on.
281 */
282 if (flags & XFS_UQUOTA_ACCT) {
283 dqtype |= XFS_QMOPT_UQUOTA;
284 flags |= (XFS_UQUOTA_CHKD | XFS_UQUOTA_ENFD);
285 inactivate_flags |= XFS_UQUOTA_ACTIVE;
286 }
287 if (flags & XFS_GQUOTA_ACCT) {
288 dqtype |= XFS_QMOPT_GQUOTA;
289 flags |= (XFS_GQUOTA_CHKD | XFS_GQUOTA_ENFD);
290 inactivate_flags |= XFS_GQUOTA_ACTIVE;
291 }
292
293 /*
294 * Nothing to do? Don't complain. This happens when we're just
295 * turning off quota enforcement.
296 */
297 if ((mp->m_qflags & flags) == 0) {
298 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
299 return (0);
300 }
301
302 /*
303 * Write the LI_QUOTAOFF log record, and do SB changes atomically,
304 * and synchronously.
305 */
306 xfs_qm_log_quotaoff(mp, &qoffstart, flags);
307
308 /*
309 * Next we clear the XFS_MOUNT_*DQ_ACTIVE bit(s) in the mount struct
310 * to take care of the race between dqget and quotaoff. We don't take
311 * any special locks to reset these bits. All processes need to check
312 * these bits *after* taking inode lock(s) to see if the particular
313 * quota type is in the process of being turned off. If *ACTIVE, it is
314 * guaranteed that all dquot structures and all quotainode ptrs will all
315 * stay valid as long as that inode is kept locked.
316 *
317 * There is no turning back after this.
318 */
319 mp->m_qflags &= ~inactivate_flags;
320
321 /*
322 * Give back all the dquot reference(s) held by inodes.
323 * Here we go thru every single incore inode in this file system, and
324 * do a dqrele on the i_udquot/i_gdquot that it may have.
325 * Essentially, as long as somebody has an inode locked, this guarantees
326 * that quotas will not be turned off. This is handy because in a
327 * transaction once we lock the inode(s) and check for quotaon, we can
328 * depend on the quota inodes (and other things) being valid as long as
329 * we keep the lock(s).
330 */
331 xfs_qm_dqrele_all_inodes(mp, flags);
332
333 /*
334 * Next we make the changes in the quota flag in the mount struct.
335 * This isn't protected by a particular lock directly, because we
336 * don't want to take a mrlock everytime we depend on quotas being on.
337 */
338 mp->m_qflags &= ~(flags);
339
340 /*
341 * Go through all the dquots of this file system and purge them,
342 * according to what was turned off. We may not be able to get rid
343 * of all dquots, because dquots can have temporary references that
344 * are not attached to inodes. eg. xfs_setattr, xfs_create.
345 * So, if we couldn't purge all the dquots from the filesystem,
346 * we can't get rid of the incore data structures.
347 */
348 while ((nculprits = xfs_qm_dqpurge_all(mp, dqtype|XFS_QMOPT_QUOTAOFF)))
349 delay(10 * nculprits);
350
351 /*
352 * Transactions that had started before ACTIVE state bit was cleared
353 * could have logged many dquots, so they'd have higher LSNs than
354 * the first QUOTAOFF log record does. If we happen to crash when
355 * the tail of the log has gone past the QUOTAOFF record, but
356 * before the last dquot modification, those dquots __will__
357 * recover, and that's not good.
358 *
359 * So, we have QUOTAOFF start and end logitems; the start
360 * logitem won't get overwritten until the end logitem appears...
361 */
362 xfs_qm_log_quotaoff_end(mp, qoffstart, flags);
363
364 /*
365 * If quotas is completely disabled, close shop.
366 */
367 if ((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_ALL) {
368 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
369 xfs_qm_destroy_quotainfo(mp);
370 return (0);
371 }
372
373 /*
374 * Release our quotainode references, and vn_purge them,
375 * if we don't need them anymore.
376 */
377 if ((dqtype & XFS_QMOPT_UQUOTA) && XFS_QI_UQIP(mp)) {
378 XFS_PURGE_INODE(XFS_QI_UQIP(mp));
379 XFS_QI_UQIP(mp) = NULL;
380 }
381 if ((dqtype & XFS_QMOPT_GQUOTA) && XFS_QI_GQIP(mp)) {
382 XFS_PURGE_INODE(XFS_QI_GQIP(mp));
383 XFS_QI_GQIP(mp) = NULL;
384 }
385 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
386
387 return (error);
388}
389
390STATIC int
391xfs_qm_scall_trunc_qfiles(
392 xfs_mount_t *mp,
393 uint flags)
394{
395 int error;
396 xfs_inode_t *qip;
397
398 if (!capable(CAP_SYS_ADMIN))
399 return XFS_ERROR(EPERM);
400 error = 0;
401 if (!XFS_SB_VERSION_HASQUOTA(&mp->m_sb) || flags == 0) {
402 qdprintk("qtrunc flags=%x m_qflags=%x\n", flags, mp->m_qflags);
403 return XFS_ERROR(EINVAL);
404 }
405
406 if ((flags & XFS_DQ_USER) && mp->m_sb.sb_uquotino != NULLFSINO) {
407 error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, 0, 0, &qip, 0);
408 if (! error) {
409 (void) xfs_truncate_file(mp, qip);
410 VN_RELE(XFS_ITOV(qip));
411 }
412 }
413
414 if ((flags & XFS_DQ_GROUP) && mp->m_sb.sb_gquotino != NULLFSINO) {
415 error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, 0, 0, &qip, 0);
416 if (! error) {
417 (void) xfs_truncate_file(mp, qip);
418 VN_RELE(XFS_ITOV(qip));
419 }
420 }
421
422 return (error);
423}
424
425
426/*
427 * Switch on (a given) quota enforcement for a filesystem. This takes
428 * effect immediately.
429 * (Switching on quota accounting must be done at mount time.)
430 */
431STATIC int
432xfs_qm_scall_quotaon(
433 xfs_mount_t *mp,
434 uint flags)
435{
436 int error;
437 unsigned long s;
438 uint qf;
439 uint accflags;
440 __int64_t sbflags;
441
442 if (!capable(CAP_SYS_ADMIN))
443 return XFS_ERROR(EPERM);
444
445 flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
446 /*
447 * Switching on quota accounting must be done at mount time.
448 */
449 accflags = flags & XFS_ALL_QUOTA_ACCT;
450 flags &= ~(XFS_ALL_QUOTA_ACCT);
451
452 sbflags = 0;
453
454 if (flags == 0) {
455 qdprintk("quotaon: zero flags, m_qflags=%x\n", mp->m_qflags);
456 return XFS_ERROR(EINVAL);
457 }
458
459 /* No fs can turn on quotas with a delayed effect */
460 ASSERT((flags & XFS_ALL_QUOTA_ACCT) == 0);
461
462 /*
463 * Can't enforce without accounting. We check the superblock
464 * qflags here instead of m_qflags because rootfs can have
465 * quota acct on ondisk without m_qflags' knowing.
466 */
467 if (((flags & XFS_UQUOTA_ACCT) == 0 &&
468 (mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) == 0 &&
469 (flags & XFS_UQUOTA_ENFD))
470 ||
471 ((flags & XFS_GQUOTA_ACCT) == 0 &&
472 (mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) == 0 &&
473 (flags & XFS_GQUOTA_ENFD))) {
474 qdprintk("Can't enforce without acct, flags=%x sbflags=%x\n",
475 flags, mp->m_sb.sb_qflags);
476 return XFS_ERROR(EINVAL);
477 }
478 /*
479 * If everything's upto-date incore, then don't waste time.
480 */
481 if ((mp->m_qflags & flags) == flags)
482 return XFS_ERROR(EEXIST);
483
484 /*
485 * Change sb_qflags on disk but not incore mp->qflags
486 * if this is the root filesystem.
487 */
488 s = XFS_SB_LOCK(mp);
489 qf = mp->m_sb.sb_qflags;
490 mp->m_sb.sb_qflags = qf | flags;
491 XFS_SB_UNLOCK(mp, s);
492
493 /*
494 * There's nothing to change if it's the same.
495 */
496 if ((qf & flags) == flags && sbflags == 0)
497 return XFS_ERROR(EEXIST);
498 sbflags |= XFS_SB_QFLAGS;
499
500 if ((error = xfs_qm_write_sb_changes(mp, sbflags)))
501 return (error);
502 /*
503 * If we aren't trying to switch on quota enforcement, we are done.
504 */
505 if (((mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) !=
506 (mp->m_qflags & XFS_UQUOTA_ACCT)) ||
507 (flags & XFS_ALL_QUOTA_ENFD) == 0)
508 return (0);
509
510 if (! XFS_IS_QUOTA_RUNNING(mp))
511 return XFS_ERROR(ESRCH);
512
513 /*
514 * Switch on quota enforcement in core.
515 */
516 mutex_lock(&(XFS_QI_QOFFLOCK(mp)), PINOD);
517 mp->m_qflags |= (flags & XFS_ALL_QUOTA_ENFD);
518 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
519
520 return (0);
521}
522
523
524
525/*
526 * Return quota status information, such as uquota-off, enforcements, etc.
527 */
528STATIC int
529xfs_qm_scall_getqstat(
530 xfs_mount_t *mp,
531 fs_quota_stat_t *out)
532{
533 xfs_inode_t *uip, *gip;
534 boolean_t tempuqip, tempgqip;
535
536 uip = gip = NULL;
537 tempuqip = tempgqip = B_FALSE;
538 memset(out, 0, sizeof(fs_quota_stat_t));
539
540 out->qs_version = FS_QSTAT_VERSION;
541 if (! XFS_SB_VERSION_HASQUOTA(&mp->m_sb)) {
542 out->qs_uquota.qfs_ino = NULLFSINO;
543 out->qs_gquota.qfs_ino = NULLFSINO;
544 return (0);
545 }
546 out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
547 (XFS_ALL_QUOTA_ACCT|
548 XFS_ALL_QUOTA_ENFD));
549 out->qs_pad = 0;
550 out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
551 out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
552
553 if (mp->m_quotainfo) {
554 uip = mp->m_quotainfo->qi_uquotaip;
555 gip = mp->m_quotainfo->qi_gquotaip;
556 }
557 if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
558 if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
559 0, 0, &uip, 0) == 0)
560 tempuqip = B_TRUE;
561 }
562 if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
563 if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
564 0, 0, &gip, 0) == 0)
565 tempgqip = B_TRUE;
566 }
567 if (uip) {
568 out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks;
569 out->qs_uquota.qfs_nextents = uip->i_d.di_nextents;
570 if (tempuqip)
571 VN_RELE(XFS_ITOV(uip));
572 }
573 if (gip) {
574 out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks;
575 out->qs_gquota.qfs_nextents = gip->i_d.di_nextents;
576 if (tempgqip)
577 VN_RELE(XFS_ITOV(gip));
578 }
579 if (mp->m_quotainfo) {
580 out->qs_incoredqs = XFS_QI_MPLNDQUOTS(mp);
581 out->qs_btimelimit = XFS_QI_BTIMELIMIT(mp);
582 out->qs_itimelimit = XFS_QI_ITIMELIMIT(mp);
583 out->qs_rtbtimelimit = XFS_QI_RTBTIMELIMIT(mp);
584 out->qs_bwarnlimit = XFS_QI_BWARNLIMIT(mp);
585 out->qs_iwarnlimit = XFS_QI_IWARNLIMIT(mp);
586 }
587 return (0);
588}
589
590/*
591 * Adjust quota limits, and start/stop timers accordingly.
592 */
593STATIC int
594xfs_qm_scall_setqlim(
595 xfs_mount_t *mp,
596 xfs_dqid_t id,
597 uint type,
598 fs_disk_quota_t *newlim)
599{
600 xfs_disk_dquot_t *ddq;
601 xfs_dquot_t *dqp;
602 xfs_trans_t *tp;
603 int error;
604 xfs_qcnt_t hard, soft;
605
606 if (!capable(CAP_SYS_ADMIN))
607 return XFS_ERROR(EPERM);
608
609 if ((newlim->d_fieldmask & (FS_DQ_LIMIT_MASK|FS_DQ_TIMER_MASK)) == 0)
610 return (0);
611
612 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SETQLIM);
613 if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_disk_dquot_t) + 128,
614 0, 0, XFS_DEFAULT_LOG_COUNT))) {
615 xfs_trans_cancel(tp, 0);
616 return (error);
617 }
618
619 /*
620 * We don't want to race with a quotaoff so take the quotaoff lock.
621 * (We don't hold an inode lock, so there's nothing else to stop
622 * a quotaoff from happening). (XXXThis doesn't currently happen
623 * because we take the vfslock before calling xfs_qm_sysent).
624 */
625 mutex_lock(&(XFS_QI_QOFFLOCK(mp)), PINOD);
626
627 /*
628 * Get the dquot (locked), and join it to the transaction.
629 * Allocate the dquot if this doesn't exist.
630 */
631 if ((error = xfs_qm_dqget(mp, NULL, id, type, XFS_QMOPT_DQALLOC, &dqp))) {
632 xfs_trans_cancel(tp, XFS_TRANS_ABORT);
633 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
634 ASSERT(error != ENOENT);
635 return (error);
636 }
637 xfs_dqtrace_entry(dqp, "Q_SETQLIM: AFT DQGET");
638 xfs_trans_dqjoin(tp, dqp);
639 ddq = &dqp->q_core;
640
641 /*
642 * Make sure that hardlimits are >= soft limits before changing.
643 */
644 hard = (newlim->d_fieldmask & FS_DQ_BHARD) ?
645 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_hardlimit) :
646 INT_GET(ddq->d_blk_hardlimit, ARCH_CONVERT);
647 soft = (newlim->d_fieldmask & FS_DQ_BSOFT) ?
648 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_softlimit) :
649 INT_GET(ddq->d_blk_softlimit, ARCH_CONVERT);
650 if (hard == 0 || hard >= soft) {
651 INT_SET(ddq->d_blk_hardlimit, ARCH_CONVERT, hard);
652 INT_SET(ddq->d_blk_softlimit, ARCH_CONVERT, soft);
653 if (id == 0) {
654 mp->m_quotainfo->qi_bhardlimit = hard;
655 mp->m_quotainfo->qi_bsoftlimit = soft;
656 }
657 } else {
658 qdprintk("blkhard %Ld < blksoft %Ld\n", hard, soft);
659 }
660 hard = (newlim->d_fieldmask & FS_DQ_RTBHARD) ?
661 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_hardlimit) :
662 INT_GET(ddq->d_rtb_hardlimit, ARCH_CONVERT);
663 soft = (newlim->d_fieldmask & FS_DQ_RTBSOFT) ?
664 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_softlimit) :
665 INT_GET(ddq->d_rtb_softlimit, ARCH_CONVERT);
666 if (hard == 0 || hard >= soft) {
667 INT_SET(ddq->d_rtb_hardlimit, ARCH_CONVERT, hard);
668 INT_SET(ddq->d_rtb_softlimit, ARCH_CONVERT, soft);
669 if (id == 0) {
670 mp->m_quotainfo->qi_rtbhardlimit = hard;
671 mp->m_quotainfo->qi_rtbsoftlimit = soft;
672 }
673 } else {
674 qdprintk("rtbhard %Ld < rtbsoft %Ld\n", hard, soft);
675 }
676
677 hard = (newlim->d_fieldmask & FS_DQ_IHARD) ?
678 (xfs_qcnt_t) newlim->d_ino_hardlimit :
679 INT_GET(ddq->d_ino_hardlimit, ARCH_CONVERT);
680 soft = (newlim->d_fieldmask & FS_DQ_ISOFT) ?
681 (xfs_qcnt_t) newlim->d_ino_softlimit :
682 INT_GET(ddq->d_ino_softlimit, ARCH_CONVERT);
683 if (hard == 0 || hard >= soft) {
684 INT_SET(ddq->d_ino_hardlimit, ARCH_CONVERT, hard);
685 INT_SET(ddq->d_ino_softlimit, ARCH_CONVERT, soft);
686 if (id == 0) {
687 mp->m_quotainfo->qi_ihardlimit = hard;
688 mp->m_quotainfo->qi_isoftlimit = soft;
689 }
690 } else {
691 qdprintk("ihard %Ld < isoft %Ld\n", hard, soft);
692 }
693
694 if (id == 0) {
695 /*
696 * Timelimits for the super user set the relative time
697 * the other users can be over quota for this file system.
698 * If it is zero a default is used. Ditto for the default
699 * soft and hard limit values (already done, above).
700 */
701 if (newlim->d_fieldmask & FS_DQ_BTIMER) {
702 mp->m_quotainfo->qi_btimelimit = newlim->d_btimer;
703 INT_SET(ddq->d_btimer, ARCH_CONVERT, newlim->d_btimer);
704 }
705 if (newlim->d_fieldmask & FS_DQ_ITIMER) {
706 mp->m_quotainfo->qi_itimelimit = newlim->d_itimer;
707 INT_SET(ddq->d_itimer, ARCH_CONVERT, newlim->d_itimer);
708 }
709 if (newlim->d_fieldmask & FS_DQ_RTBTIMER) {
710 mp->m_quotainfo->qi_rtbtimelimit = newlim->d_rtbtimer;
711 INT_SET(ddq->d_rtbtimer, ARCH_CONVERT, newlim->d_rtbtimer);
712 }
713 } else /* if (XFS_IS_QUOTA_ENFORCED(mp)) */ {
714 /*
715 * If the user is now over quota, start the timelimit.
716 * The user will not be 'warned'.
717 * Note that we keep the timers ticking, whether enforcement
718 * is on or off. We don't really want to bother with iterating
719 * over all ondisk dquots and turning the timers on/off.
720 */
721 xfs_qm_adjust_dqtimers(mp, ddq);
722 }
723 dqp->dq_flags |= XFS_DQ_DIRTY;
724 xfs_trans_log_dquot(tp, dqp);
725
726 xfs_dqtrace_entry(dqp, "Q_SETQLIM: COMMIT");
727 xfs_trans_commit(tp, 0, NULL);
728 xfs_qm_dqprint(dqp);
729 xfs_qm_dqrele(dqp);
730 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
731
732 return (0);
733}
734
735STATIC int
736xfs_qm_scall_getquota(
737 xfs_mount_t *mp,
738 xfs_dqid_t id,
739 uint type,
740 fs_disk_quota_t *out)
741{
742 xfs_dquot_t *dqp;
743 int error;
744
745 /*
746 * Try to get the dquot. We don't want it allocated on disk, so
747 * we aren't passing the XFS_QMOPT_DOALLOC flag. If it doesn't
748 * exist, we'll get ENOENT back.
749 */
750 if ((error = xfs_qm_dqget(mp, NULL, id, type, 0, &dqp))) {
751 return (error);
752 }
753
754 xfs_dqtrace_entry(dqp, "Q_GETQUOTA SUCCESS");
755 /*
756 * If everything's NULL, this dquot doesn't quite exist as far as
757 * our utility programs are concerned.
758 */
759 if (XFS_IS_DQUOT_UNINITIALIZED(dqp)) {
760 xfs_qm_dqput(dqp);
761 return XFS_ERROR(ENOENT);
762 }
763 /* xfs_qm_dqprint(dqp); */
764 /*
765 * Convert the disk dquot to the exportable format
766 */
767 xfs_qm_export_dquot(mp, &dqp->q_core, out);
768 xfs_qm_dqput(dqp);
769 return (error ? XFS_ERROR(EFAULT) : 0);
770}
771
772
773STATIC int
774xfs_qm_log_quotaoff_end(
775 xfs_mount_t *mp,
776 xfs_qoff_logitem_t *startqoff,
777 uint flags)
778{
779 xfs_trans_t *tp;
780 int error;
781 xfs_qoff_logitem_t *qoffi;
782
783 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF_END);
784
785 if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_qoff_logitem_t) * 2,
786 0, 0, XFS_DEFAULT_LOG_COUNT))) {
787 xfs_trans_cancel(tp, 0);
788 return (error);
789 }
790
791 qoffi = xfs_trans_get_qoff_item(tp, startqoff,
792 flags & XFS_ALL_QUOTA_ACCT);
793 xfs_trans_log_quotaoff_item(tp, qoffi);
794
795 /*
796 * We have to make sure that the transaction is secure on disk before we
797 * return and actually stop quota accounting. So, make it synchronous.
798 * We don't care about quotoff's performance.
799 */
800 xfs_trans_set_sync(tp);
801 error = xfs_trans_commit(tp, 0, NULL);
802 return (error);
803}
804
805
806STATIC int
807xfs_qm_log_quotaoff(
808 xfs_mount_t *mp,
809 xfs_qoff_logitem_t **qoffstartp,
810 uint flags)
811{
812 xfs_trans_t *tp;
813 int error;
814 unsigned long s;
815 xfs_qoff_logitem_t *qoffi=NULL;
816 uint oldsbqflag=0;
817
818 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF);
819 if ((error = xfs_trans_reserve(tp, 0,
820 sizeof(xfs_qoff_logitem_t) * 2 +
821 mp->m_sb.sb_sectsize + 128,
822 0,
823 0,
824 XFS_DEFAULT_LOG_COUNT))) {
825 goto error0;
826 }
827
828 qoffi = xfs_trans_get_qoff_item(tp, NULL, flags & XFS_ALL_QUOTA_ACCT);
829 xfs_trans_log_quotaoff_item(tp, qoffi);
830
831 s = XFS_SB_LOCK(mp);
832 oldsbqflag = mp->m_sb.sb_qflags;
833 mp->m_sb.sb_qflags = (mp->m_qflags & ~(flags)) & XFS_MOUNT_QUOTA_ALL;
834 XFS_SB_UNLOCK(mp, s);
835
836 xfs_mod_sb(tp, XFS_SB_QFLAGS);
837
838 /*
839 * We have to make sure that the transaction is secure on disk before we
840 * return and actually stop quota accounting. So, make it synchronous.
841 * We don't care about quotoff's performance.
842 */
843 xfs_trans_set_sync(tp);
844 error = xfs_trans_commit(tp, 0, NULL);
845
846error0:
847 if (error) {
848 xfs_trans_cancel(tp, 0);
849 /*
850 * No one else is modifying sb_qflags, so this is OK.
851 * We still hold the quotaofflock.
852 */
853 s = XFS_SB_LOCK(mp);
854 mp->m_sb.sb_qflags = oldsbqflag;
855 XFS_SB_UNLOCK(mp, s);
856 }
857 *qoffstartp = qoffi;
858 return (error);
859}
860
861
862/*
863 * Translate an internal style on-disk-dquot to the exportable format.
864 * The main differences are that the counters/limits are all in Basic
865 * Blocks (BBs) instead of the internal FSBs, and all on-disk data has
866 * to be converted to the native endianness.
867 */
868STATIC void
869xfs_qm_export_dquot(
870 xfs_mount_t *mp,
871 xfs_disk_dquot_t *src,
872 struct fs_disk_quota *dst)
873{
874 memset(dst, 0, sizeof(*dst));
875 dst->d_version = FS_DQUOT_VERSION; /* different from src->d_version */
876 dst->d_flags =
877 xfs_qm_export_qtype_flags(INT_GET(src->d_flags, ARCH_CONVERT));
878 dst->d_id = INT_GET(src->d_id, ARCH_CONVERT);
879 dst->d_blk_hardlimit = (__uint64_t)
880 XFS_FSB_TO_BB(mp, INT_GET(src->d_blk_hardlimit, ARCH_CONVERT));
881 dst->d_blk_softlimit = (__uint64_t)
882 XFS_FSB_TO_BB(mp, INT_GET(src->d_blk_softlimit, ARCH_CONVERT));
883 dst->d_ino_hardlimit = (__uint64_t)
884 INT_GET(src->d_ino_hardlimit, ARCH_CONVERT);
885 dst->d_ino_softlimit = (__uint64_t)
886 INT_GET(src->d_ino_softlimit, ARCH_CONVERT);
887 dst->d_bcount = (__uint64_t)
888 XFS_FSB_TO_BB(mp, INT_GET(src->d_bcount, ARCH_CONVERT));
889 dst->d_icount = (__uint64_t) INT_GET(src->d_icount, ARCH_CONVERT);
890 dst->d_btimer = (__uint32_t) INT_GET(src->d_btimer, ARCH_CONVERT);
891 dst->d_itimer = (__uint32_t) INT_GET(src->d_itimer, ARCH_CONVERT);
892 dst->d_iwarns = INT_GET(src->d_iwarns, ARCH_CONVERT);
893 dst->d_bwarns = INT_GET(src->d_bwarns, ARCH_CONVERT);
894
895 dst->d_rtb_hardlimit = (__uint64_t)
896 XFS_FSB_TO_BB(mp, INT_GET(src->d_rtb_hardlimit, ARCH_CONVERT));
897 dst->d_rtb_softlimit = (__uint64_t)
898 XFS_FSB_TO_BB(mp, INT_GET(src->d_rtb_softlimit, ARCH_CONVERT));
899 dst->d_rtbcount = (__uint64_t)
900 XFS_FSB_TO_BB(mp, INT_GET(src->d_rtbcount, ARCH_CONVERT));
901 dst->d_rtbtimer = (__uint32_t) INT_GET(src->d_rtbtimer, ARCH_CONVERT);
902 dst->d_rtbwarns = INT_GET(src->d_rtbwarns, ARCH_CONVERT);
903
904 /*
905 * Internally, we don't reset all the timers when quota enforcement
906 * gets turned off. No need to confuse the userlevel code,
907 * so return zeroes in that case.
908 */
909 if (! XFS_IS_QUOTA_ENFORCED(mp)) {
910 dst->d_btimer = 0;
911 dst->d_itimer = 0;
912 dst->d_rtbtimer = 0;
913 }
914
915#ifdef DEBUG
916 if (XFS_IS_QUOTA_ENFORCED(mp) && 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
929STATIC uint
930xfs_qm_import_qtype_flags(
931 uint uflags)
932{
933 /*
934 * Can't be both at the same time.
935 */
936 if (((uflags & (XFS_GROUP_QUOTA | XFS_USER_QUOTA)) ==
937 (XFS_GROUP_QUOTA | XFS_USER_QUOTA)) ||
938 ((uflags & (XFS_GROUP_QUOTA | XFS_USER_QUOTA)) == 0))
939 return (0);
940
941 return (uflags & XFS_USER_QUOTA) ?
942 XFS_DQ_USER : XFS_DQ_GROUP;
943}
944
945STATIC uint
946xfs_qm_export_qtype_flags(
947 uint flags)
948{
949 /*
950 * Can't be both at the same time.
951 */
952 ASSERT((flags & (XFS_GROUP_QUOTA | XFS_USER_QUOTA)) !=
953 (XFS_GROUP_QUOTA | XFS_USER_QUOTA));
954 ASSERT((flags & (XFS_GROUP_QUOTA | XFS_USER_QUOTA)) != 0);
955
956 return (flags & XFS_DQ_USER) ?
957 XFS_USER_QUOTA : XFS_GROUP_QUOTA;
958}
959
960STATIC uint
961xfs_qm_import_flags(
962 uint uflags)
963{
964 uint flags = 0;
965
966 if (uflags & XFS_QUOTA_UDQ_ACCT)
967 flags |= XFS_UQUOTA_ACCT;
968 if (uflags & XFS_QUOTA_GDQ_ACCT)
969 flags |= XFS_GQUOTA_ACCT;
970 if (uflags & XFS_QUOTA_UDQ_ENFD)
971 flags |= XFS_UQUOTA_ENFD;
972 if (uflags & XFS_QUOTA_GDQ_ENFD)
973 flags |= XFS_GQUOTA_ENFD;
974 return (flags);
975}
976
977
978STATIC uint
979xfs_qm_export_flags(
980 uint flags)
981{
982 uint uflags;
983
984 uflags = 0;
985 if (flags & XFS_UQUOTA_ACCT)
986 uflags |= XFS_QUOTA_UDQ_ACCT;
987 if (flags & XFS_GQUOTA_ACCT)
988 uflags |= XFS_QUOTA_GDQ_ACCT;
989 if (flags & XFS_UQUOTA_ENFD)
990 uflags |= XFS_QUOTA_UDQ_ENFD;
991 if (flags & XFS_GQUOTA_ENFD)
992 uflags |= XFS_QUOTA_GDQ_ENFD;
993 return (uflags);
994}
995
996
997/*
998 * Go thru all the inodes in the file system, releasing their dquots.
999 * Note that the mount structure gets modified to indicate that quotas are off
1000 * AFTER this, in the case of quotaoff. This also gets called from
1001 * xfs_rootumount.
1002 */
1003void
1004xfs_qm_dqrele_all_inodes(
1005 struct xfs_mount *mp,
1006 uint flags)
1007{
1008 vmap_t vmap;
1009 xfs_inode_t *ip, *topino;
1010 uint ireclaims;
1011 vnode_t *vp;
1012 boolean_t vnode_refd;
1013
1014 ASSERT(mp->m_quotainfo);
1015
1016again:
1017 XFS_MOUNT_ILOCK(mp);
1018 ip = mp->m_inodes;
1019 if (ip == NULL) {
1020 XFS_MOUNT_IUNLOCK(mp);
1021 return;
1022 }
1023 do {
1024 /* Skip markers inserted by xfs_sync */
1025 if (ip->i_mount == NULL) {
1026 ip = ip->i_mnext;
1027 continue;
1028 }
1029 /* Root inode, rbmip and rsumip have associated blocks */
1030 if (ip == XFS_QI_UQIP(mp) || ip == XFS_QI_GQIP(mp)) {
1031 ASSERT(ip->i_udquot == NULL);
1032 ASSERT(ip->i_gdquot == NULL);
1033 ip = ip->i_mnext;
1034 continue;
1035 }
1036 vp = XFS_ITOV_NULL(ip);
1037 if (!vp) {
1038 ASSERT(ip->i_udquot == NULL);
1039 ASSERT(ip->i_gdquot == NULL);
1040 ip = ip->i_mnext;
1041 continue;
1042 }
1043 vnode_refd = B_FALSE;
1044 if (xfs_ilock_nowait(ip, XFS_ILOCK_EXCL) == 0) {
1045 /*
1046 * Sample vp mapping while holding the mplock, lest
1047 * we come across a non-existent vnode.
1048 */
1049 VMAP(vp, vmap);
1050 ireclaims = mp->m_ireclaims;
1051 topino = mp->m_inodes;
1052 XFS_MOUNT_IUNLOCK(mp);
1053
1054 /* XXX restart limit ? */
1055 if ( ! (vp = vn_get(vp, &vmap)))
1056 goto again;
1057 xfs_ilock(ip, XFS_ILOCK_EXCL);
1058 vnode_refd = B_TRUE;
1059 } else {
1060 ireclaims = mp->m_ireclaims;
1061 topino = mp->m_inodes;
1062 XFS_MOUNT_IUNLOCK(mp);
1063 }
1064
1065 /*
1066 * We don't keep the mountlock across the dqrele() call,
1067 * since it can take a while..
1068 */
1069 if ((flags & XFS_UQUOTA_ACCT) && ip->i_udquot) {
1070 xfs_qm_dqrele(ip->i_udquot);
1071 ip->i_udquot = NULL;
1072 }
1073 if ((flags & XFS_GQUOTA_ACCT) && ip->i_gdquot) {
1074 xfs_qm_dqrele(ip->i_gdquot);
1075 ip->i_gdquot = NULL;
1076 }
1077 xfs_iunlock(ip, XFS_ILOCK_EXCL);
1078 /*
1079 * Wait until we've dropped the ilock and mountlock to
1080 * do the vn_rele. Or be condemned to an eternity in the
1081 * inactive code in hell.
1082 */
1083 if (vnode_refd)
1084 VN_RELE(vp);
1085 XFS_MOUNT_ILOCK(mp);
1086 /*
1087 * If an inode was inserted or removed, we gotta
1088 * start over again.
1089 */
1090 if (topino != mp->m_inodes || mp->m_ireclaims != ireclaims) {
1091 /* XXX use a sentinel */
1092 XFS_MOUNT_IUNLOCK(mp);
1093 goto again;
1094 }
1095 ip = ip->i_mnext;
1096 } while (ip != mp->m_inodes);
1097
1098 XFS_MOUNT_IUNLOCK(mp);
1099}
1100
1101/*------------------------------------------------------------------------*/
1102#ifdef DEBUG
1103/*
1104 * This contains all the test functions for XFS disk quotas.
1105 * Currently it does a quota accounting check. ie. it walks through
1106 * all inodes in the file system, calculating the dquot accounting fields,
1107 * and prints out any inconsistencies.
1108 */
1109xfs_dqhash_t *qmtest_udqtab;
1110xfs_dqhash_t *qmtest_gdqtab;
1111int qmtest_hashmask;
1112int qmtest_nfails;
1113mutex_t qcheck_lock;
1114
1115#define DQTEST_HASHVAL(mp, id) (((__psunsigned_t)(mp) + \
1116 (__psunsigned_t)(id)) & \
1117 (qmtest_hashmask - 1))
1118
1119#define DQTEST_HASH(mp, id, type) ((type & XFS_DQ_USER) ? \
1120 (qmtest_udqtab + \
1121 DQTEST_HASHVAL(mp, id)) : \
1122 (qmtest_gdqtab + \
1123 DQTEST_HASHVAL(mp, id)))
1124
1125#define DQTEST_LIST_PRINT(l, NXT, title) \
1126{ \
1127 xfs_dqtest_t *dqp; int i = 0;\
1128 cmn_err(CE_DEBUG, "%s (#%d)", title, (int) (l)->qh_nelems); \
1129 for (dqp = (xfs_dqtest_t *)(l)->qh_next; dqp != NULL; \
1130 dqp = (xfs_dqtest_t *)dqp->NXT) { \
1131 cmn_err(CE_DEBUG, " %d. \"%d (%s)\" bcnt = %d, icnt = %d", \
1132 ++i, dqp->d_id, DQFLAGTO_TYPESTR(dqp), \
1133 dqp->d_bcount, dqp->d_icount); } \
1134}
1135
1136typedef struct dqtest {
1137 xfs_dqmarker_t q_lists;
1138 xfs_dqhash_t *q_hash; /* the hashchain header */
1139 xfs_mount_t *q_mount; /* filesystem this relates to */
1140 xfs_dqid_t d_id; /* user id or group id */
1141 xfs_qcnt_t d_bcount; /* # disk blocks owned by the user */
1142 xfs_qcnt_t d_icount; /* # inodes owned by the user */
1143} xfs_dqtest_t;
1144
1145STATIC void
1146xfs_qm_hashinsert(xfs_dqhash_t *h, xfs_dqtest_t *dqp)
1147{
1148 xfs_dquot_t *d;
1149 if (((d) = (h)->qh_next))
1150 (d)->HL_PREVP = &((dqp)->HL_NEXT);
1151 (dqp)->HL_NEXT = d;
1152 (dqp)->HL_PREVP = &((h)->qh_next);
1153 (h)->qh_next = (xfs_dquot_t *)dqp;
1154 (h)->qh_version++;
1155 (h)->qh_nelems++;
1156}
1157STATIC void
1158xfs_qm_dqtest_print(
1159 xfs_dqtest_t *d)
1160{
1161 cmn_err(CE_DEBUG, "-----------DQTEST DQUOT----------------");
1162 cmn_err(CE_DEBUG, "---- dquot ID = %d", d->d_id);
1163 cmn_err(CE_DEBUG, "---- type = %s", XFS_QM_ISUDQ(d)? "USR" : "GRP");
1164 cmn_err(CE_DEBUG, "---- fs = 0x%p", d->q_mount);
1165 cmn_err(CE_DEBUG, "---- bcount = %Lu (0x%x)",
1166 d->d_bcount, (int)d->d_bcount);
1167 cmn_err(CE_DEBUG, "---- icount = %Lu (0x%x)",
1168 d->d_icount, (int)d->d_icount);
1169 cmn_err(CE_DEBUG, "---------------------------");
1170}
1171
1172STATIC void
1173xfs_qm_dqtest_failed(
1174 xfs_dqtest_t *d,
1175 xfs_dquot_t *dqp,
1176 char *reason,
1177 xfs_qcnt_t a,
1178 xfs_qcnt_t b,
1179 int error)
1180{
1181 qmtest_nfails++;
1182 if (error)
1183 cmn_err(CE_DEBUG, "quotacheck failed id=%d, err=%d\nreason: %s",
1184 INT_GET(d->d_id, ARCH_CONVERT), error, reason);
1185 else
1186 cmn_err(CE_DEBUG, "quotacheck failed id=%d (%s) [%d != %d]",
1187 INT_GET(d->d_id, ARCH_CONVERT), reason, (int)a, (int)b);
1188 xfs_qm_dqtest_print(d);
1189 if (dqp)
1190 xfs_qm_dqprint(dqp);
1191}
1192
1193STATIC int
1194xfs_dqtest_cmp2(
1195 xfs_dqtest_t *d,
1196 xfs_dquot_t *dqp)
1197{
1198 int err = 0;
1199 if (INT_GET(dqp->q_core.d_icount, ARCH_CONVERT) != d->d_icount) {
1200 xfs_qm_dqtest_failed(d, dqp, "icount mismatch",
1201 INT_GET(dqp->q_core.d_icount, ARCH_CONVERT),
1202 d->d_icount, 0);
1203 err++;
1204 }
1205 if (INT_GET(dqp->q_core.d_bcount, ARCH_CONVERT) != d->d_bcount) {
1206 xfs_qm_dqtest_failed(d, dqp, "bcount mismatch",
1207 INT_GET(dqp->q_core.d_bcount, ARCH_CONVERT),
1208 d->d_bcount, 0);
1209 err++;
1210 }
1211 if (INT_GET(dqp->q_core.d_blk_softlimit, ARCH_CONVERT) &&
1212 INT_GET(dqp->q_core.d_bcount, ARCH_CONVERT) >=
1213 INT_GET(dqp->q_core.d_blk_softlimit, ARCH_CONVERT)) {
1214 if (!dqp->q_core.d_btimer && dqp->q_core.d_id) {
1215 cmn_err(CE_DEBUG,
1216 "%d [%s] [0x%p] BLK TIMER NOT STARTED",
1217 d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
1218 err++;
1219 }
1220 }
1221 if (INT_GET(dqp->q_core.d_ino_softlimit, ARCH_CONVERT) &&
1222 INT_GET(dqp->q_core.d_icount, ARCH_CONVERT) >=
1223 INT_GET(dqp->q_core.d_ino_softlimit, ARCH_CONVERT)) {
1224 if (!dqp->q_core.d_itimer && dqp->q_core.d_id) {
1225 cmn_err(CE_DEBUG,
1226 "%d [%s] [0x%p] INO TIMER NOT STARTED",
1227 d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
1228 err++;
1229 }
1230 }
1231#ifdef QUOTADEBUG
1232 if (!err) {
1233 cmn_err(CE_DEBUG, "%d [%s] [0x%p] qchecked",
1234 d->d_id, XFS_QM_ISUDQ(d) ? "USR" : "GRP", d->q_mount);
1235 }
1236#endif
1237 return (err);
1238}
1239
1240STATIC void
1241xfs_dqtest_cmp(
1242 xfs_dqtest_t *d)
1243{
1244 xfs_dquot_t *dqp;
1245 int error;
1246
1247 /* xfs_qm_dqtest_print(d); */
1248 if ((error = xfs_qm_dqget(d->q_mount, NULL, d->d_id, d->dq_flags, 0,
1249 &dqp))) {
1250 xfs_qm_dqtest_failed(d, NULL, "dqget failed", 0, 0, error);
1251 return;
1252 }
1253 xfs_dqtest_cmp2(d, dqp);
1254 xfs_qm_dqput(dqp);
1255}
1256
1257STATIC int
1258xfs_qm_internalqcheck_dqget(
1259 xfs_mount_t *mp,
1260 xfs_dqid_t id,
1261 uint type,
1262 xfs_dqtest_t **O_dq)
1263{
1264 xfs_dqtest_t *d;
1265 xfs_dqhash_t *h;
1266
1267 h = DQTEST_HASH(mp, id, type);
1268 for (d = (xfs_dqtest_t *) h->qh_next; d != NULL;
1269 d = (xfs_dqtest_t *) d->HL_NEXT) {
1270 /* DQTEST_LIST_PRINT(h, HL_NEXT, "@@@@@ dqtestlist @@@@@"); */
1271 if (d->d_id == id && mp == d->q_mount) {
1272 *O_dq = d;
1273 return (0);
1274 }
1275 }
1276 d = kmem_zalloc(sizeof(xfs_dqtest_t), KM_SLEEP);
1277 d->dq_flags = type;
1278 d->d_id = id;
1279 d->q_mount = mp;
1280 d->q_hash = h;
1281 xfs_qm_hashinsert(h, d);
1282 *O_dq = d;
1283 return (0);
1284}
1285
1286STATIC void
1287xfs_qm_internalqcheck_get_dquots(
1288 xfs_mount_t *mp,
1289 xfs_dqid_t uid,
1290 xfs_dqid_t gid,
1291 xfs_dqtest_t **ud,
1292 xfs_dqtest_t **gd)
1293{
1294 if (XFS_IS_UQUOTA_ON(mp))
1295 xfs_qm_internalqcheck_dqget(mp, uid, XFS_DQ_USER, ud);
1296 if (XFS_IS_GQUOTA_ON(mp))
1297 xfs_qm_internalqcheck_dqget(mp, gid, XFS_DQ_GROUP, gd);
1298}
1299
1300
1301STATIC void
1302xfs_qm_internalqcheck_dqadjust(
1303 xfs_inode_t *ip,
1304 xfs_dqtest_t *d)
1305{
1306 d->d_icount++;
1307 d->d_bcount += (xfs_qcnt_t)ip->i_d.di_nblocks;
1308}
1309
1310STATIC int
1311xfs_qm_internalqcheck_adjust(
1312 xfs_mount_t *mp, /* mount point for filesystem */
1313 xfs_ino_t ino, /* inode number to get data for */
1314 void __user *buffer, /* not used */
1315 int ubsize, /* not used */
1316 void *private_data, /* not used */
1317 xfs_daddr_t bno, /* starting block of inode cluster */
1318 int *ubused, /* not used */
1319 void *dip, /* not used */
1320 int *res) /* bulkstat result code */
1321{
1322 xfs_inode_t *ip;
1323 xfs_dqtest_t *ud, *gd;
1324 uint lock_flags;
1325 boolean_t ipreleased;
1326 int error;
1327
1328 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1329
1330 if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) {
1331 *res = BULKSTAT_RV_NOTHING;
1332 qdprintk("internalqcheck: ino=%llu, uqino=%llu, gqino=%llu\n",
1333 (unsigned long long) ino,
1334 (unsigned long long) mp->m_sb.sb_uquotino,
1335 (unsigned long long) mp->m_sb.sb_gquotino);
1336 return XFS_ERROR(EINVAL);
1337 }
1338 ipreleased = B_FALSE;
1339 again:
1340 lock_flags = XFS_ILOCK_SHARED;
1341 if ((error = xfs_iget(mp, NULL, ino, 0, lock_flags, &ip, bno))) {
1342 *res = BULKSTAT_RV_NOTHING;
1343 return (error);
1344 }
1345
1346 if (ip->i_d.di_mode == 0) {
1347 xfs_iput_new(ip, lock_flags);
1348 *res = BULKSTAT_RV_NOTHING;
1349 return XFS_ERROR(ENOENT);
1350 }
1351
1352 /*
1353 * This inode can have blocks after eof which can get released
1354 * when we send it to inactive. Since we don't check the dquot
1355 * until the after all our calculations are done, we must get rid
1356 * of those now.
1357 */
1358 if (! ipreleased) {
1359 xfs_iput(ip, lock_flags);
1360 ipreleased = B_TRUE;
1361 goto again;
1362 }
1363 xfs_qm_internalqcheck_get_dquots(mp,
1364 (xfs_dqid_t) ip->i_d.di_uid,
1365 (xfs_dqid_t) ip->i_d.di_gid,
1366 &ud, &gd);
1367 if (XFS_IS_UQUOTA_ON(mp)) {
1368 ASSERT(ud);
1369 xfs_qm_internalqcheck_dqadjust(ip, ud);
1370 }
1371 if (XFS_IS_GQUOTA_ON(mp)) {
1372 ASSERT(gd);
1373 xfs_qm_internalqcheck_dqadjust(ip, gd);
1374 }
1375 xfs_iput(ip, lock_flags);
1376 *res = BULKSTAT_RV_DIDONE;
1377 return (0);
1378}
1379
1380
1381/* PRIVATE, debugging */
1382int
1383xfs_qm_internalqcheck(
1384 xfs_mount_t *mp)
1385{
1386 xfs_ino_t lastino;
1387 int done, count;
1388 int i;
1389 xfs_dqtest_t *d, *e;
1390 xfs_dqhash_t *h1;
1391 int error;
1392
1393 lastino = 0;
1394 qmtest_hashmask = 32;
1395 count = 5;
1396 done = 0;
1397 qmtest_nfails = 0;
1398
1399 if (! XFS_IS_QUOTA_ON(mp))
1400 return XFS_ERROR(ESRCH);
1401
1402 xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC);
1403 XFS_bflush(mp->m_ddev_targp);
1404 xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC);
1405 XFS_bflush(mp->m_ddev_targp);
1406
1407 mutex_lock(&qcheck_lock, PINOD);
1408 /* There should be absolutely no quota activity while this
1409 is going on. */
1410 qmtest_udqtab = kmem_zalloc(qmtest_hashmask *
1411 sizeof(xfs_dqhash_t), KM_SLEEP);
1412 qmtest_gdqtab = kmem_zalloc(qmtest_hashmask *
1413 sizeof(xfs_dqhash_t), KM_SLEEP);
1414 do {
1415 /*
1416 * Iterate thru all the inodes in the file system,
1417 * adjusting the corresponding dquot counters
1418 */
1419 if ((error = xfs_bulkstat(mp, &lastino, &count,
1420 xfs_qm_internalqcheck_adjust, NULL,
1421 0, NULL, BULKSTAT_FG_IGET, &done))) {
1422 break;
1423 }
1424 } while (! done);
1425 if (error) {
1426 cmn_err(CE_DEBUG, "Bulkstat returned error 0x%x", error);
1427 }
1428 cmn_err(CE_DEBUG, "Checking results against system dquots");
1429 for (i = 0; i < qmtest_hashmask; i++) {
1430 h1 = &qmtest_udqtab[i];
1431 for (d = (xfs_dqtest_t *) h1->qh_next; d != NULL; ) {
1432 xfs_dqtest_cmp(d);
1433 e = (xfs_dqtest_t *) d->HL_NEXT;
1434 kmem_free(d, sizeof(xfs_dqtest_t));
1435 d = e;
1436 }
1437 h1 = &qmtest_gdqtab[i];
1438 for (d = (xfs_dqtest_t *) h1->qh_next; d != NULL; ) {
1439 xfs_dqtest_cmp(d);
1440 e = (xfs_dqtest_t *) d->HL_NEXT;
1441 kmem_free(d, sizeof(xfs_dqtest_t));
1442 d = e;
1443 }
1444 }
1445
1446 if (qmtest_nfails) {
1447 cmn_err(CE_DEBUG, "******** quotacheck failed ********");
1448 cmn_err(CE_DEBUG, "failures = %d", qmtest_nfails);
1449 } else {
1450 cmn_err(CE_DEBUG, "******** quotacheck successful! ********");
1451 }
1452 kmem_free(qmtest_udqtab, qmtest_hashmask * sizeof(xfs_dqhash_t));
1453 kmem_free(qmtest_gdqtab, qmtest_hashmask * sizeof(xfs_dqhash_t));
1454 mutex_unlock(&qcheck_lock);
1455 return (qmtest_nfails);
1456}
1457
1458#endif /* DEBUG */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-22 18:46:37 -0500