fs/xfs/quota/xfs_qm_syscalls.c

   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_alloc.h"
  30 #include "xfs_quota.h"
  31 #include "xfs_mount.h"
  32 #include "xfs_bmap_btree.h"
  33 #include "xfs_inode.h"
  34 #include "xfs_itable.h"
  35 #include "xfs_bmap.h"
  36 #include "xfs_rtalloc.h"
  37 #include "xfs_error.h"
  38 #include "xfs_attr.h"
  39 #include "xfs_buf_item.h"
  40 #include "xfs_utils.h"
  41 #include "xfs_qm.h"
  42 #include "xfs_trace.h"
  43
  44 #ifdef DEBUG
  45 # define qdprintk(s, args...)   cmn_err(CE_DEBUG, s, ## args)
  46 #else
  47 # define qdprintk(s, args...)   do { } while (0)
  48 #endif
  49
  50 STATIC int      xfs_qm_log_quotaoff(xfs_mount_t *, xfs_qoff_logitem_t **, uint);
  51 STATIC int      xfs_qm_log_quotaoff_end(xfs_mount_t *, xfs_qoff_logitem_t *,
  52                                         uint);
  53 STATIC uint     xfs_qm_export_flags(uint);
  54 STATIC uint     xfs_qm_export_qtype_flags(uint);
  55 STATIC void     xfs_qm_export_dquot(xfs_mount_t *, xfs_disk_dquot_t *,
  56                                         fs_disk_quota_t *);
  57
  58
  59 /*
  60  * Turn off quota accounting and/or enforcement for all udquots and/or
  61  * gdquots. Called only at unmount time.
  62  *
  63  * This assumes that there are no dquots of this file system cached
  64  * incore, and modifies the ondisk dquot directly. Therefore, for example,
  65  * it is an error to call this twice, without purging the cache.
  66  */
  67 int
  68 xfs_qm_scall_quotaoff(
  69         xfs_mount_t             *mp,
  70         uint                    flags)
  71 {
  72         struct xfs_quotainfo    *q = mp->m_quotainfo;
  73         uint                    dqtype;
  74         int                     error;
  75         uint                    inactivate_flags;
  76         xfs_qoff_logitem_t      *qoffstart;
  77         int                     nculprits;
  78
  79         /*
  80          * No file system can have quotas enabled on disk but not in core.
  81          * Note that quota utilities (like quotaoff) _expect_
  82          * errno == EEXIST here.
  83          */
  84         if ((mp->m_qflags & flags) == 0)
  85                 return XFS_ERROR(EEXIST);
  86         error = 0;
  87
  88         flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
  89
  90         /*
  91          * We don't want to deal with two quotaoffs messing up each other,
  92          * so we're going to serialize it. quotaoff isn't exactly a performance
  93          * critical thing.
  94          * If quotaoff, then we must be dealing with the root filesystem.
  95          */
  96         ASSERT(q);
  97         mutex_lock(&q->qi_quotaofflock);
  98
  99         /*
 100          * If we're just turning off quota enforcement, change mp and go.
 101          */
 102         if ((flags & XFS_ALL_QUOTA_ACCT) == 0) {
 103                 mp->m_qflags &= ~(flags);
 104
 105                 spin_lock(&mp->m_sb_lock);
 106                 mp->m_sb.sb_qflags = mp->m_qflags;
 107                 spin_unlock(&mp->m_sb_lock);
 108                 mutex_unlock(&q->qi_quotaofflock);
 109
 110                 /* XXX what to do if error ? Revert back to old vals incore ? */
 111                 error = xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS);
 112                 return (error);
 113         }
 114
 115         dqtype = 0;
 116         inactivate_flags = 0;
 117         /*
 118          * If accounting is off, we must turn enforcement off, clear the
 119          * quota 'CHKD' certificate to make it known that we have to
 120          * do a quotacheck the next time this quota is turned on.
 121          */
 122         if (flags & XFS_UQUOTA_ACCT) {
 123                 dqtype |= XFS_QMOPT_UQUOTA;
 124                 flags |= (XFS_UQUOTA_CHKD | XFS_UQUOTA_ENFD);
 125                 inactivate_flags |= XFS_UQUOTA_ACTIVE;
 126         }
 127         if (flags & XFS_GQUOTA_ACCT) {
 128                 dqtype |= XFS_QMOPT_GQUOTA;
 129                 flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_ENFD);
 130                 inactivate_flags |= XFS_GQUOTA_ACTIVE;
 131         } else if (flags & XFS_PQUOTA_ACCT) {
 132                 dqtype |= XFS_QMOPT_PQUOTA;
 133                 flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_ENFD);
 134                 inactivate_flags |= XFS_PQUOTA_ACTIVE;
 135         }
 136
 137         /*
 138          * Nothing to do?  Don't complain. This happens when we're just
 139          * turning off quota enforcement.
 140          */
 141         if ((mp->m_qflags & flags) == 0)
 142                 goto out_unlock;
 143
 144         /*
 145          * Write the LI_QUOTAOFF log record, and do SB changes atomically,
 146          * and synchronously. If we fail to write, we should abort the
 147          * operation as it cannot be recovered safely if we crash.
 148          */
 149         error = xfs_qm_log_quotaoff(mp, &qoffstart, flags);
 150         if (error)
 151                 goto out_unlock;
 152
 153         /*
 154          * Next we clear the XFS_MOUNT_*DQ_ACTIVE bit(s) in the mount struct
 155          * to take care of the race between dqget and quotaoff. We don't take
 156          * any special locks to reset these bits. All processes need to check
 157          * these bits *after* taking inode lock(s) to see if the particular
 158          * quota type is in the process of being turned off. If *ACTIVE, it is
 159          * guaranteed that all dquot structures and all quotainode ptrs will all
 160          * stay valid as long as that inode is kept locked.
 161          *
 162          * There is no turning back after this.
 163          */
 164         mp->m_qflags &= ~inactivate_flags;
 165
 166         /*
 167          * Give back all the dquot reference(s) held by inodes.
 168          * Here we go thru every single incore inode in this file system, and
 169          * do a dqrele on the i_udquot/i_gdquot that it may have.
 170          * Essentially, as long as somebody has an inode locked, this guarantees
 171          * that quotas will not be turned off. This is handy because in a
 172          * transaction once we lock the inode(s) and check for quotaon, we can
 173          * depend on the quota inodes (and other things) being valid as long as
 174          * we keep the lock(s).
 175          */
 176         xfs_qm_dqrele_all_inodes(mp, flags);
 177
 178         /*
 179          * Next we make the changes in the quota flag in the mount struct.
 180          * This isn't protected by a particular lock directly, because we
 181          * don't want to take a mrlock everytime we depend on quotas being on.
 182          */
 183         mp->m_qflags &= ~(flags);
 184
 185         /*
 186          * Go through all the dquots of this file system and purge them,
 187          * according to what was turned off. We may not be able to get rid
 188          * of all dquots, because dquots can have temporary references that
 189          * are not attached to inodes. eg. xfs_setattr, xfs_create.
 190          * So, if we couldn't purge all the dquots from the filesystem,
 191          * we can't get rid of the incore data structures.
 192          */
 193         while ((nculprits = xfs_qm_dqpurge_all(mp, dqtype)))
 194                 delay(10 * nculprits);
 195
 196         /*
 197          * Transactions that had started before ACTIVE state bit was cleared
 198          * could have logged many dquots, so they'd have higher LSNs than
 199          * the first QUOTAOFF log record does. If we happen to crash when
 200          * the tail of the log has gone past the QUOTAOFF record, but
 201          * before the last dquot modification, those dquots __will__
 202          * recover, and that's not good.
 203          *
 204          * So, we have QUOTAOFF start and end logitems; the start
 205          * logitem won't get overwritten until the end logitem appears...
 206          */
 207         error = xfs_qm_log_quotaoff_end(mp, qoffstart, flags);
 208         if (error) {
 209                 /* We're screwed now. Shutdown is the only option. */
 210                 xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
 211                 goto out_unlock;
 212         }
 213
 214         /*
 215          * If quotas is completely disabled, close shop.
 216          */
 217         if (((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET1) ||
 218             ((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET2)) {
 219                 mutex_unlock(&q->qi_quotaofflock);
 220                 xfs_qm_destroy_quotainfo(mp);
 221                 return (0);
 222         }
 223
 224         /*
 225          * Release our quotainode references if we don't need them anymore.
 226          */
 227         if ((dqtype & XFS_QMOPT_UQUOTA) && q->qi_uquotaip) {
 228                 IRELE(q->qi_uquotaip);
 229                 q->qi_uquotaip = NULL;
 230         }
 231         if ((dqtype & (XFS_QMOPT_GQUOTA|XFS_QMOPT_PQUOTA)) && q->qi_gquotaip) {
 232                 IRELE(q->qi_gquotaip);
 233                 q->qi_gquotaip = NULL;
 234         }
 235
 236 out_unlock:
 237         mutex_unlock(&q->qi_quotaofflock);
 238         return error;
 239 }
 240
 241 int
 242 xfs_qm_scall_trunc_qfiles(
 243         xfs_mount_t     *mp,
 244         uint            flags)
 245 {
 246         int             error = 0, error2 = 0;
 247         xfs_inode_t     *qip;
 248
 249         if (!xfs_sb_version_hasquota(&mp->m_sb) || flags == 0) {
 250                 qdprintk("qtrunc flags=%x m_qflags=%x\n", flags, mp->m_qflags);
 251                 return XFS_ERROR(EINVAL);
 252         }
 253
 254         if ((flags & XFS_DQ_USER) && mp->m_sb.sb_uquotino != NULLFSINO) {
 255                 error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, 0, 0, &qip);
 256                 if (!error) {
 257                         error = xfs_truncate_file(mp, qip);
 258                         IRELE(qip);
 259                 }
 260         }
 261
 262         if ((flags & (XFS_DQ_GROUP|XFS_DQ_PROJ)) &&
 263             mp->m_sb.sb_gquotino != NULLFSINO) {
 264                 error2 = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, 0, 0, &qip);
 265                 if (!error2) {
 266                         error2 = xfs_truncate_file(mp, qip);
 267                         IRELE(qip);
 268                 }
 269         }
 270
 271         return error ? error : error2;
 272 }
 273
 274
 275 /*
 276  * Switch on (a given) quota enforcement for a filesystem.  This takes
 277  * effect immediately.
 278  * (Switching on quota accounting must be done at mount time.)
 279  */
 280 int
 281 xfs_qm_scall_quotaon(
 282         xfs_mount_t     *mp,
 283         uint            flags)
 284 {
 285         int             error;
 286         uint            qf;
 287         uint            accflags;
 288         __int64_t       sbflags;
 289
 290         flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
 291         /*
 292          * Switching on quota accounting must be done at mount time.
 293          */
 294         accflags = flags & XFS_ALL_QUOTA_ACCT;
 295         flags &= ~(XFS_ALL_QUOTA_ACCT);
 296
 297         sbflags = 0;
 298
 299         if (flags == 0) {
 300                 qdprintk("quotaon: zero flags, m_qflags=%x\n", mp->m_qflags);
 301                 return XFS_ERROR(EINVAL);
 302         }
 303
 304         /* No fs can turn on quotas with a delayed effect */
 305         ASSERT((flags & XFS_ALL_QUOTA_ACCT) == 0);
 306
 307         /*
 308          * Can't enforce without accounting. We check the superblock
 309          * qflags here instead of m_qflags because rootfs can have
 310          * quota acct on ondisk without m_qflags' knowing.
 311          */
 312         if (((flags & XFS_UQUOTA_ACCT) == 0 &&
 313             (mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) == 0 &&
 314             (flags & XFS_UQUOTA_ENFD))
 315             ||
 316             ((flags & XFS_PQUOTA_ACCT) == 0 &&
 317             (mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) == 0 &&
 318             (flags & XFS_GQUOTA_ACCT) == 0 &&
 319             (mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) == 0 &&
 320             (flags & XFS_OQUOTA_ENFD))) {
 321                 qdprintk("Can't enforce without acct, flags=%x sbflags=%x\n",
 322                         flags, mp->m_sb.sb_qflags);
 323                 return XFS_ERROR(EINVAL);
 324         }
 325         /*
 326          * If everything's upto-date incore, then don't waste time.
 327          */
 328         if ((mp->m_qflags & flags) == flags)
 329                 return XFS_ERROR(EEXIST);
 330
 331         /*
 332          * Change sb_qflags on disk but not incore mp->qflags
 333          * if this is the root filesystem.
 334          */
 335         spin_lock(&mp->m_sb_lock);
 336         qf = mp->m_sb.sb_qflags;
 337         mp->m_sb.sb_qflags = qf | flags;
 338         spin_unlock(&mp->m_sb_lock);
 339
 340         /*
 341          * There's nothing to change if it's the same.
 342          */
 343         if ((qf & flags) == flags && sbflags == 0)
 344                 return XFS_ERROR(EEXIST);
 345         sbflags |= XFS_SB_QFLAGS;
 346
 347         if ((error = xfs_qm_write_sb_changes(mp, sbflags)))
 348                 return (error);
 349         /*
 350          * If we aren't trying to switch on quota enforcement, we are done.
 351          */
 352         if  (((mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) !=
 353              (mp->m_qflags & XFS_UQUOTA_ACCT)) ||
 354              ((mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) !=
 355              (mp->m_qflags & XFS_PQUOTA_ACCT)) ||
 356              ((mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) !=
 357              (mp->m_qflags & XFS_GQUOTA_ACCT)) ||
 358             (flags & XFS_ALL_QUOTA_ENFD) == 0)
 359                 return (0);
 360
 361         if (! XFS_IS_QUOTA_RUNNING(mp))
 362                 return XFS_ERROR(ESRCH);
 363
 364         /*
 365          * Switch on quota enforcement in core.
 366          */
 367         mutex_lock(&mp->m_quotainfo->qi_quotaofflock);
 368         mp->m_qflags |= (flags & XFS_ALL_QUOTA_ENFD);
 369         mutex_unlock(&mp->m_quotainfo->qi_quotaofflock);
 370
 371         return (0);
 372 }
 373
 374
 375 /*
 376  * Return quota status information, such as uquota-off, enforcements, etc.
 377  */
 378 int
 379 xfs_qm_scall_getqstat(
 380         struct xfs_mount        *mp,
 381         struct fs_quota_stat    *out)
 382 {
 383         struct xfs_quotainfo    *q = mp->m_quotainfo;
 384         struct xfs_inode        *uip, *gip;
 385         boolean_t               tempuqip, tempgqip;
 386
 387         uip = gip = NULL;
 388         tempuqip = tempgqip = B_FALSE;
 389         memset(out, 0, sizeof(fs_quota_stat_t));
 390
 391         out->qs_version = FS_QSTAT_VERSION;
 392         if (!xfs_sb_version_hasquota(&mp->m_sb)) {
 393                 out->qs_uquota.qfs_ino = NULLFSINO;
 394                 out->qs_gquota.qfs_ino = NULLFSINO;
 395                 return (0);
 396         }
 397         out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
 398                                                         (XFS_ALL_QUOTA_ACCT|
 399                                                          XFS_ALL_QUOTA_ENFD));
 400         out->qs_pad = 0;
 401         out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
 402         out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
 403
 404         if (q) {
 405                 uip = q->qi_uquotaip;
 406                 gip = q->qi_gquotaip;
 407         }
 408         if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
 409                 if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
 410                                         0, 0, &uip) == 0)
 411                         tempuqip = B_TRUE;
 412         }
 413         if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
 414                 if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
 415                                         0, 0, &gip) == 0)
 416                         tempgqip = B_TRUE;
 417         }
 418         if (uip) {
 419                 out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks;
 420                 out->qs_uquota.qfs_nextents = uip->i_d.di_nextents;
 421                 if (tempuqip)
 422                         IRELE(uip);
 423         }
 424         if (gip) {
 425                 out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks;
 426                 out->qs_gquota.qfs_nextents = gip->i_d.di_nextents;
 427                 if (tempgqip)
 428                         IRELE(gip);
 429         }
 430         if (q) {
 431                 out->qs_incoredqs = q->qi_dquots;
 432                 out->qs_btimelimit = q->qi_btimelimit;
 433                 out->qs_itimelimit = q->qi_itimelimit;
 434                 out->qs_rtbtimelimit = q->qi_rtbtimelimit;
 435                 out->qs_bwarnlimit = q->qi_bwarnlimit;
 436                 out->qs_iwarnlimit = q->qi_iwarnlimit;
 437         }
 438         return 0;
 439 }
 440
 441 #define XFS_DQ_MASK \
 442         (FS_DQ_LIMIT_MASK | FS_DQ_TIMER_MASK | FS_DQ_WARNS_MASK)
 443
 444 /*
 445  * Adjust quota limits, and start/stop timers accordingly.
 446  */
 447 int
 448 xfs_qm_scall_setqlim(
 449         xfs_mount_t             *mp,
 450         xfs_dqid_t              id,
 451         uint                    type,
 452         fs_disk_quota_t         *newlim)
 453 {
 454         struct xfs_quotainfo    *q = mp->m_quotainfo;
 455         xfs_disk_dquot_t        *ddq;
 456         xfs_dquot_t             *dqp;
 457         xfs_trans_t             *tp;
 458         int                     error;
 459         xfs_qcnt_t              hard, soft;
 460
 461         if (newlim->d_fieldmask & ~XFS_DQ_MASK)
 462                 return EINVAL;
 463         if ((newlim->d_fieldmask & XFS_DQ_MASK) == 0)
 464                 return 0;
 465
 466         tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SETQLIM);
 467         if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_disk_dquot_t) + 128,
 468                                       0, 0, XFS_DEFAULT_LOG_COUNT))) {
 469                 xfs_trans_cancel(tp, 0);
 470                 return (error);
 471         }
 472
 473         /*
 474          * We don't want to race with a quotaoff so take the quotaoff lock.
 475          * (We don't hold an inode lock, so there's nothing else to stop
 476          * a quotaoff from happening). (XXXThis doesn't currently happen
 477          * because we take the vfslock before calling xfs_qm_sysent).
 478          */
 479         mutex_lock(&q->qi_quotaofflock);
 480
 481         /*
 482          * Get the dquot (locked), and join it to the transaction.
 483          * Allocate the dquot if this doesn't exist.
 484          */
 485         if ((error = xfs_qm_dqget(mp, NULL, id, type, XFS_QMOPT_DQALLOC, &dqp))) {
 486                 xfs_trans_cancel(tp, XFS_TRANS_ABORT);
 487                 ASSERT(error != ENOENT);
 488                 goto out_unlock;
 489         }
 490         xfs_trans_dqjoin(tp, dqp);
 491         ddq = &dqp->q_core;
 492
 493         /*
 494          * Make sure that hardlimits are >= soft limits before changing.
 495          */
 496         hard = (newlim->d_fieldmask & FS_DQ_BHARD) ?
 497                 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_hardlimit) :
 498                         be64_to_cpu(ddq->d_blk_hardlimit);
 499         soft = (newlim->d_fieldmask & FS_DQ_BSOFT) ?
 500                 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_softlimit) :
 501                         be64_to_cpu(ddq->d_blk_softlimit);
 502         if (hard == 0 || hard >= soft) {
 503                 ddq->d_blk_hardlimit = cpu_to_be64(hard);
 504                 ddq->d_blk_softlimit = cpu_to_be64(soft);
 505                 if (id == 0) {
 506                         q->qi_bhardlimit = hard;
 507                         q->qi_bsoftlimit = soft;
 508                 }
 509         } else {
 510                 qdprintk("blkhard %Ld < blksoft %Ld\n", hard, soft);
 511         }
 512         hard = (newlim->d_fieldmask & FS_DQ_RTBHARD) ?
 513                 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_hardlimit) :
 514                         be64_to_cpu(ddq->d_rtb_hardlimit);
 515         soft = (newlim->d_fieldmask & FS_DQ_RTBSOFT) ?
 516                 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_softlimit) :
 517                         be64_to_cpu(ddq->d_rtb_softlimit);
 518         if (hard == 0 || hard >= soft) {
 519                 ddq->d_rtb_hardlimit = cpu_to_be64(hard);
 520                 ddq->d_rtb_softlimit = cpu_to_be64(soft);
 521                 if (id == 0) {
 522                         q->qi_rtbhardlimit = hard;
 523                         q->qi_rtbsoftlimit = soft;
 524                 }
 525         } else {
 526                 qdprintk("rtbhard %Ld < rtbsoft %Ld\n", hard, soft);
 527         }
 528
 529         hard = (newlim->d_fieldmask & FS_DQ_IHARD) ?
 530                 (xfs_qcnt_t) newlim->d_ino_hardlimit :
 531                         be64_to_cpu(ddq->d_ino_hardlimit);
 532         soft = (newlim->d_fieldmask & FS_DQ_ISOFT) ?
 533                 (xfs_qcnt_t) newlim->d_ino_softlimit :
 534                         be64_to_cpu(ddq->d_ino_softlimit);
 535         if (hard == 0 || hard >= soft) {
 536                 ddq->d_ino_hardlimit = cpu_to_be64(hard);
 537                 ddq->d_ino_softlimit = cpu_to_be64(soft);
 538                 if (id == 0) {
 539                         q->qi_ihardlimit = hard;
 540                         q->qi_isoftlimit = soft;
 541                 }
 542         } else {
 543                 qdprintk("ihard %Ld < isoft %Ld\n", hard, soft);
 544         }
 545
 546         /*
 547          * Update warnings counter(s) if requested
 548          */
 549         if (newlim->d_fieldmask & FS_DQ_BWARNS)
 550                 ddq->d_bwarns = cpu_to_be16(newlim->d_bwarns);
 551         if (newlim->d_fieldmask & FS_DQ_IWARNS)
 552                 ddq->d_iwarns = cpu_to_be16(newlim->d_iwarns);
 553         if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
 554                 ddq->d_rtbwarns = cpu_to_be16(newlim->d_rtbwarns);
 555
 556         if (id == 0) {
 557                 /*
 558                  * Timelimits for the super user set the relative time
 559                  * the other users can be over quota for this file system.
 560                  * If it is zero a default is used.  Ditto for the default
 561                  * soft and hard limit values (already done, above), and
 562                  * for warnings.
 563                  */
 564                 if (newlim->d_fieldmask & FS_DQ_BTIMER) {
 565                         q->qi_btimelimit = newlim->d_btimer;
 566                         ddq->d_btimer = cpu_to_be32(newlim->d_btimer);
 567                 }
 568                 if (newlim->d_fieldmask & FS_DQ_ITIMER) {
 569                         q->qi_itimelimit = newlim->d_itimer;
 570                         ddq->d_itimer = cpu_to_be32(newlim->d_itimer);
 571                 }
 572                 if (newlim->d_fieldmask & FS_DQ_RTBTIMER) {
 573                         q->qi_rtbtimelimit = newlim->d_rtbtimer;
 574                         ddq->d_rtbtimer = cpu_to_be32(newlim->d_rtbtimer);
 575                 }
 576                 if (newlim->d_fieldmask & FS_DQ_BWARNS)
 577                         q->qi_bwarnlimit = newlim->d_bwarns;
 578                 if (newlim->d_fieldmask & FS_DQ_IWARNS)
 579                         q->qi_iwarnlimit = newlim->d_iwarns;
 580                 if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
 581                         q->qi_rtbwarnlimit = newlim->d_rtbwarns;
 582         } else {
 583                 /*
 584                  * If the user is now over quota, start the timelimit.
 585                  * The user will not be 'warned'.
 586                  * Note that we keep the timers ticking, whether enforcement
 587                  * is on or off. We don't really want to bother with iterating
 588                  * over all ondisk dquots and turning the timers on/off.
 589                  */
 590                 xfs_qm_adjust_dqtimers(mp, ddq);
 591         }
 592         dqp->dq_flags |= XFS_DQ_DIRTY;
 593         xfs_trans_log_dquot(tp, dqp);
 594
 595         error = xfs_trans_commit(tp, 0);
 596         xfs_qm_dqprint(dqp);
 597         xfs_qm_dqrele(dqp);
 598
 599  out_unlock:
 600         mutex_unlock(&q->qi_quotaofflock);
 601         return error;
 602 }
 603
 604 int
 605 xfs_qm_scall_getquota(
 606         xfs_mount_t     *mp,
 607         xfs_dqid_t      id,
 608         uint            type,
 609         fs_disk_quota_t *out)
 610 {
 611         xfs_dquot_t     *dqp;
 612         int             error;
 613
 614         /*
 615          * Try to get the dquot. We don't want it allocated on disk, so
 616          * we aren't passing the XFS_QMOPT_DOALLOC flag. If it doesn't
 617          * exist, we'll get ENOENT back.
 618          */
 619         if ((error = xfs_qm_dqget(mp, NULL, id, type, 0, &dqp))) {
 620                 return (error);
 621         }
 622
 623         /*
 624          * If everything's NULL, this dquot doesn't quite exist as far as
 625          * our utility programs are concerned.
 626          */
 627         if (XFS_IS_DQUOT_UNINITIALIZED(dqp)) {
 628                 xfs_qm_dqput(dqp);
 629                 return XFS_ERROR(ENOENT);
 630         }
 631         /* xfs_qm_dqprint(dqp); */
 632         /*
 633          * Convert the disk dquot to the exportable format
 634          */
 635         xfs_qm_export_dquot(mp, &dqp->q_core, out);
 636         xfs_qm_dqput(dqp);
 637         return (error ? XFS_ERROR(EFAULT) : 0);
 638 }
 639
 640
 641 STATIC int
 642 xfs_qm_log_quotaoff_end(
 643         xfs_mount_t             *mp,
 644         xfs_qoff_logitem_t      *startqoff,
 645         uint                    flags)
 646 {
 647         xfs_trans_t             *tp;
 648         int                     error;
 649         xfs_qoff_logitem_t      *qoffi;
 650
 651         tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF_END);
 652
 653         if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_qoff_logitem_t) * 2,
 654                                       0, 0, XFS_DEFAULT_LOG_COUNT))) {
 655                 xfs_trans_cancel(tp, 0);
 656                 return (error);
 657         }
 658
 659         qoffi = xfs_trans_get_qoff_item(tp, startqoff,
 660                                         flags & XFS_ALL_QUOTA_ACCT);
 661         xfs_trans_log_quotaoff_item(tp, qoffi);
 662
 663         /*
 664          * We have to make sure that the transaction is secure on disk before we
 665          * return and actually stop quota accounting. So, make it synchronous.
 666          * We don't care about quotoff's performance.
 667          */
 668         xfs_trans_set_sync(tp);
 669         error = xfs_trans_commit(tp, 0);
 670         return (error);
 671 }
 672
 673
 674 STATIC int
 675 xfs_qm_log_quotaoff(
 676         xfs_mount_t            *mp,
 677         xfs_qoff_logitem_t     **qoffstartp,
 678         uint                   flags)
 679 {
 680         xfs_trans_t            *tp;
 681         int                     error;
 682         xfs_qoff_logitem_t     *qoffi=NULL;
 683         uint                    oldsbqflag=0;
 684
 685         tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF);
 686         if ((error = xfs_trans_reserve(tp, 0,
 687                                       sizeof(xfs_qoff_logitem_t) * 2 +
 688                                       mp->m_sb.sb_sectsize + 128,
 689                                       0,
 690                                       0,
 691                                       XFS_DEFAULT_LOG_COUNT))) {
 692                 goto error0;
 693         }
 694
 695         qoffi = xfs_trans_get_qoff_item(tp, NULL, flags & XFS_ALL_QUOTA_ACCT);
 696         xfs_trans_log_quotaoff_item(tp, qoffi);
 697
 698         spin_lock(&mp->m_sb_lock);
 699         oldsbqflag = mp->m_sb.sb_qflags;
 700         mp->m_sb.sb_qflags = (mp->m_qflags & ~(flags)) & XFS_MOUNT_QUOTA_ALL;
 701         spin_unlock(&mp->m_sb_lock);
 702
 703         xfs_mod_sb(tp, XFS_SB_QFLAGS);
 704
 705         /*
 706          * We have to make sure that the transaction is secure on disk before we
 707          * return and actually stop quota accounting. So, make it synchronous.
 708          * We don't care about quotoff's performance.
 709          */
 710         xfs_trans_set_sync(tp);
 711         error = xfs_trans_commit(tp, 0);
 712
 713 error0:
 714         if (error) {
 715                 xfs_trans_cancel(tp, 0);
 716                 /*
 717                  * No one else is modifying sb_qflags, so this is OK.
 718                  * We still hold the quotaofflock.
 719                  */
 720                 spin_lock(&mp->m_sb_lock);
 721                 mp->m_sb.sb_qflags = oldsbqflag;
 722                 spin_unlock(&mp->m_sb_lock);
 723         }
 724         *qoffstartp = qoffi;
 725         return (error);
 726 }
 727
 728
 729 /*
 730  * Translate an internal style on-disk-dquot to the exportable format.
 731  * The main differences are that the counters/limits are all in Basic
 732  * Blocks (BBs) instead of the internal FSBs, and all on-disk data has
 733  * to be converted to the native endianness.
 734  */
 735 STATIC void
 736 xfs_qm_export_dquot(
 737         xfs_mount_t             *mp,
 738         xfs_disk_dquot_t        *src,
 739         struct fs_disk_quota    *dst)
 740 {
 741         memset(dst, 0, sizeof(*dst));
 742         dst->d_version = FS_DQUOT_VERSION;  /* different from src->d_version */
 743         dst->d_flags = xfs_qm_export_qtype_flags(src->d_flags);
 744         dst->d_id = be32_to_cpu(src->d_id);
 745         dst->d_blk_hardlimit =
 746                 XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_blk_hardlimit));
 747         dst->d_blk_softlimit =
 748                 XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_blk_softlimit));
 749         dst->d_ino_hardlimit = be64_to_cpu(src->d_ino_hardlimit);
 750         dst->d_ino_softlimit = be64_to_cpu(src->d_ino_softlimit);
 751         dst->d_bcount = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_bcount));
 752         dst->d_icount = be64_to_cpu(src->d_icount);
 753         dst->d_btimer = be32_to_cpu(src->d_btimer);
 754         dst->d_itimer = be32_to_cpu(src->d_itimer);
 755         dst->d_iwarns = be16_to_cpu(src->d_iwarns);
 756         dst->d_bwarns = be16_to_cpu(src->d_bwarns);
 757         dst->d_rtb_hardlimit =
 758                 XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtb_hardlimit));
 759         dst->d_rtb_softlimit =
 760                 XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtb_softlimit));
 761         dst->d_rtbcount = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtbcount));
 762         dst->d_rtbtimer = be32_to_cpu(src->d_rtbtimer);
 763         dst->d_rtbwarns = be16_to_cpu(src->d_rtbwarns);
 764
 765         /*
 766          * Internally, we don't reset all the timers when quota enforcement
 767          * gets turned off. No need to confuse the user level code,
 768          * so return zeroes in that case.
 769          */
 770         if ((!XFS_IS_UQUOTA_ENFORCED(mp) && src->d_flags == XFS_DQ_USER) ||
 771             (!XFS_IS_OQUOTA_ENFORCED(mp) &&
 772                         (src->d_flags & (XFS_DQ_PROJ | XFS_DQ_GROUP)))) {
 773                 dst->d_btimer = 0;
 774                 dst->d_itimer = 0;
 775                 dst->d_rtbtimer = 0;
 776         }
 777
 778 #ifdef DEBUG
 779         if (((XFS_IS_UQUOTA_ENFORCED(mp) && dst->d_flags == XFS_USER_QUOTA) ||
 780              (XFS_IS_OQUOTA_ENFORCED(mp) &&
 781                         (dst->d_flags & (XFS_PROJ_QUOTA | XFS_GROUP_QUOTA)))) &&
 782             dst->d_id != 0) {
 783                 if (((int) dst->d_bcount >= (int) dst->d_blk_softlimit) &&
 784                     (dst->d_blk_softlimit > 0)) {
 785                         ASSERT(dst->d_btimer != 0);
 786                 }
 787                 if (((int) dst->d_icount >= (int) dst->d_ino_softlimit) &&
 788                     (dst->d_ino_softlimit > 0)) {
 789                         ASSERT(dst->d_itimer != 0);
 790                 }
 791         }
 792 #endif
 793 }
 794
 795 STATIC uint
 796 xfs_qm_export_qtype_flags(
 797         uint flags)
 798 {
 799         /*
 800          * Can't be more than one, or none.
 801          */
 802         ASSERT((flags & (XFS_PROJ_QUOTA | XFS_USER_QUOTA)) !=
 803                 (XFS_PROJ_QUOTA | XFS_USER_QUOTA));
 804         ASSERT((flags & (XFS_PROJ_QUOTA | XFS_GROUP_QUOTA)) !=
 805                 (XFS_PROJ_QUOTA | XFS_GROUP_QUOTA));
 806         ASSERT((flags & (XFS_USER_QUOTA | XFS_GROUP_QUOTA)) !=
 807                 (XFS_USER_QUOTA | XFS_GROUP_QUOTA));
 808         ASSERT((flags & (XFS_PROJ_QUOTA|XFS_USER_QUOTA|XFS_GROUP_QUOTA)) != 0);
 809
 810         return (flags & XFS_DQ_USER) ?
 811                 XFS_USER_QUOTA : (flags & XFS_DQ_PROJ) ?
 812                         XFS_PROJ_QUOTA : XFS_GROUP_QUOTA;
 813 }
 814
 815 STATIC uint
 816 xfs_qm_export_flags(
 817         uint flags)
 818 {
 819         uint uflags;
 820
 821         uflags = 0;
 822         if (flags & XFS_UQUOTA_ACCT)
 823                 uflags |= XFS_QUOTA_UDQ_ACCT;
 824         if (flags & XFS_PQUOTA_ACCT)
 825                 uflags |= XFS_QUOTA_PDQ_ACCT;
 826         if (flags & XFS_GQUOTA_ACCT)
 827                 uflags |= XFS_QUOTA_GDQ_ACCT;
 828         if (flags & XFS_UQUOTA_ENFD)
 829                 uflags |= XFS_QUOTA_UDQ_ENFD;
 830         if (flags & (XFS_OQUOTA_ENFD)) {
 831                 uflags |= (flags & XFS_GQUOTA_ACCT) ?
 832                         XFS_QUOTA_GDQ_ENFD : XFS_QUOTA_PDQ_ENFD;
 833         }
 834         return (uflags);
 835 }
 836
 837
 838 STATIC int
 839 xfs_dqrele_inode(
 840         struct xfs_inode        *ip,
 841         struct xfs_perag        *pag,
 842         int                     flags)
 843 {
 844         int                     error;
 845
 846         /* skip quota inodes */
 847         if (ip == ip->i_mount->m_quotainfo->qi_uquotaip ||
 848             ip == ip->i_mount->m_quotainfo->qi_gquotaip) {
 849                 ASSERT(ip->i_udquot == NULL);
 850                 ASSERT(ip->i_gdquot == NULL);
 851                 read_unlock(&pag->pag_ici_lock);
 852                 return 0;
 853         }
 854
 855         error = xfs_sync_inode_valid(ip, pag);
 856         if (error)
 857                 return error;
 858
 859         xfs_ilock(ip, XFS_ILOCK_EXCL);
 860         if ((flags & XFS_UQUOTA_ACCT) && ip->i_udquot) {
 861                 xfs_qm_dqrele(ip->i_udquot);
 862                 ip->i_udquot = NULL;
 863         }
 864         if (flags & (XFS_PQUOTA_ACCT|XFS_GQUOTA_ACCT) && ip->i_gdquot) {
 865                 xfs_qm_dqrele(ip->i_gdquot);
 866                 ip->i_gdquot = NULL;
 867         }
 868         xfs_iput(ip, XFS_ILOCK_EXCL);
 869
 870         return 0;
 871 }
 872
 873
 874 /*
 875  * Go thru all the inodes in the file system, releasing their dquots.
 876  *
 877  * Note that the mount structure gets modified to indicate that quotas are off
 878  * AFTER this, in the case of quotaoff.
 879  */
 880 void
 881 xfs_qm_dqrele_all_inodes(
 882         struct xfs_mount *mp,
 883         uint             flags)
 884 {
 885         ASSERT(mp->m_quotainfo);
 886         xfs_inode_ag_iterator(mp, xfs_dqrele_inode, flags,
 887                                 XFS_ICI_NO_TAG, 0, NULL);
 888 }
 889
 890 /*------------------------------------------------------------------------*/
 891 #ifdef DEBUG
 892 /*
 893  * This contains all the test functions for XFS disk quotas.
 894  * Currently it does a quota accounting check. ie. it walks through
 895  * all inodes in the file system, calculating the dquot accounting fields,
 896  * and prints out any inconsistencies.
 897  */
 898 xfs_dqhash_t *qmtest_udqtab;
 899 xfs_dqhash_t *qmtest_gdqtab;
 900 int           qmtest_hashmask;
 901 int           qmtest_nfails;
 902 struct mutex  qcheck_lock;
 903
 904 #define DQTEST_HASHVAL(mp, id) (((__psunsigned_t)(mp) + \
 905                                  (__psunsigned_t)(id)) & \
 906                                 (qmtest_hashmask - 1))
 907
 908 #define DQTEST_HASH(mp, id, type)   ((type & XFS_DQ_USER) ? \
 909                                      (qmtest_udqtab + \
 910                                       DQTEST_HASHVAL(mp, id)) : \
 911                                      (qmtest_gdqtab + \
 912                                       DQTEST_HASHVAL(mp, id)))
 913
 914 #define DQTEST_LIST_PRINT(l, NXT, title) \
 915 { \
 916           xfs_dqtest_t  *dqp; int i = 0;\
 917           cmn_err(CE_DEBUG, "%s (#%d)", title, (int) (l)->qh_nelems); \
 918           for (dqp = (xfs_dqtest_t *)(l)->qh_next; dqp != NULL; \
 919                dqp = (xfs_dqtest_t *)dqp->NXT) { \
 920                 cmn_err(CE_DEBUG, "  %d. \"%d (%s)\"  bcnt = %d, icnt = %d", \
 921                          ++i, dqp->d_id, DQFLAGTO_TYPESTR(dqp),      \
 922                          dqp->d_bcount, dqp->d_icount); } \
 923 }
 924
 925 typedef struct dqtest {
 926         uint             dq_flags;      /* various flags (XFS_DQ_*) */
 927         struct list_head q_hashlist;
 928         xfs_dqhash_t    *q_hash;        /* the hashchain header */
 929         xfs_mount_t     *q_mount;       /* filesystem this relates to */
 930         xfs_dqid_t      d_id;           /* user id or group id */
 931         xfs_qcnt_t      d_bcount;       /* # disk blocks owned by the user */
 932         xfs_qcnt_t      d_icount;       /* # inodes owned by the user */
 933 } xfs_dqtest_t;
 934
 935 STATIC void
 936 xfs_qm_hashinsert(xfs_dqhash_t *h, xfs_dqtest_t *dqp)
 937 {
 938         list_add(&dqp->q_hashlist, &h->qh_list);
 939         h->qh_version++;
 940         h->qh_nelems++;
 941 }
 942 STATIC void
 943 xfs_qm_dqtest_print(
 944         xfs_dqtest_t    *d)
 945 {
 946         cmn_err(CE_DEBUG, "-----------DQTEST DQUOT----------------");
 947         cmn_err(CE_DEBUG, "---- dquot ID = %d", d->d_id);
 948         cmn_err(CE_DEBUG, "---- fs       = 0x%p", d->q_mount);
 949         cmn_err(CE_DEBUG, "---- bcount   = %Lu (0x%x)",
 950                 d->d_bcount, (int)d->d_bcount);
 951         cmn_err(CE_DEBUG, "---- icount   = %Lu (0x%x)",
 952                 d->d_icount, (int)d->d_icount);
 953         cmn_err(CE_DEBUG, "---------------------------");
 954 }
 955
 956 STATIC void
 957 xfs_qm_dqtest_failed(
 958         xfs_dqtest_t    *d,
 959         xfs_dquot_t     *dqp,
 960         char            *reason,
 961         xfs_qcnt_t      a,
 962         xfs_qcnt_t      b,
 963         int             error)
 964 {
 965         qmtest_nfails++;
 966         if (error)
 967                 cmn_err(CE_DEBUG, "quotacheck failed id=%d, err=%d\nreason: %s",
 968                        d->d_id, error, reason);
 969         else
 970                 cmn_err(CE_DEBUG, "quotacheck failed id=%d (%s) [%d != %d]",
 971                        d->d_id, reason, (int)a, (int)b);
 972         xfs_qm_dqtest_print(d);
 973         if (dqp)
 974                 xfs_qm_dqprint(dqp);
 975 }
 976
 977 STATIC int
 978 xfs_dqtest_cmp2(
 979         xfs_dqtest_t    *d,
 980         xfs_dquot_t     *dqp)
 981 {
 982         int err = 0;
 983         if (be64_to_cpu(dqp->q_core.d_icount) != d->d_icount) {
 984                 xfs_qm_dqtest_failed(d, dqp, "icount mismatch",
 985                         be64_to_cpu(dqp->q_core.d_icount),
 986                         d->d_icount, 0);
 987                 err++;
 988         }
 989         if (be64_to_cpu(dqp->q_core.d_bcount) != d->d_bcount) {
 990                 xfs_qm_dqtest_failed(d, dqp, "bcount mismatch",
 991                         be64_to_cpu(dqp->q_core.d_bcount),
 992                         d->d_bcount, 0);
 993                 err++;
 994         }
 995         if (dqp->q_core.d_blk_softlimit &&
 996             be64_to_cpu(dqp->q_core.d_bcount) >=
 997             be64_to_cpu(dqp->q_core.d_blk_softlimit)) {
 998                 if (!dqp->q_core.d_btimer && dqp->q_core.d_id) {
 999                         cmn_err(CE_DEBUG,
1000                                 "%d [%s] [0x%p] BLK TIMER NOT STARTED",
1001                                 d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
1002                         err++;
1003                 }
1004         }
1005         if (dqp->q_core.d_ino_softlimit &&
1006             be64_to_cpu(dqp->q_core.d_icount) >=
1007             be64_to_cpu(dqp->q_core.d_ino_softlimit)) {
1008                 if (!dqp->q_core.d_itimer && dqp->q_core.d_id) {
1009                         cmn_err(CE_DEBUG,
1010                                 "%d [%s] [0x%p] INO TIMER NOT STARTED",
1011                                 d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
1012                         err++;
1013                 }
1014         }
1015 #ifdef QUOTADEBUG
1016         if (!err) {
1017                 cmn_err(CE_DEBUG, "%d [%s] [0x%p] qchecked",
1018                         d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
1019         }
1020 #endif
1021         return (err);
1022 }
1023
1024 STATIC void
1025 xfs_dqtest_cmp(
1026         xfs_dqtest_t    *d)
1027 {
1028         xfs_dquot_t     *dqp;
1029         int             error;
1030
1031         /* xfs_qm_dqtest_print(d); */
1032         if ((error = xfs_qm_dqget(d->q_mount, NULL, d->d_id, d->dq_flags, 0,
1033                                  &dqp))) {
1034                 xfs_qm_dqtest_failed(d, NULL, "dqget failed", 0, 0, error);
1035                 return;
1036         }
1037         xfs_dqtest_cmp2(d, dqp);
1038         xfs_qm_dqput(dqp);
1039 }
1040
1041 STATIC int
1042 xfs_qm_internalqcheck_dqget(
1043         xfs_mount_t     *mp,
1044         xfs_dqid_t      id,
1045         uint            type,
1046         xfs_dqtest_t    **O_dq)
1047 {
1048         xfs_dqtest_t    *d;
1049         xfs_dqhash_t    *h;
1050
1051         h = DQTEST_HASH(mp, id, type);
1052         list_for_each_entry(d, &h->qh_list, q_hashlist) {
1053                 if (d->d_id == id && mp == d->q_mount) {
1054                         *O_dq = d;
1055                         return (0);
1056                 }
1057         }
1058         d = kmem_zalloc(sizeof(xfs_dqtest_t), KM_SLEEP);
1059         d->dq_flags = type;
1060         d->d_id = id;
1061         d->q_mount = mp;
1062         d->q_hash = h;
1063         INIT_LIST_HEAD(&d->q_hashlist);
1064         xfs_qm_hashinsert(h, d);
1065         *O_dq = d;
1066         return (0);
1067 }
1068
1069 STATIC void
1070 xfs_qm_internalqcheck_get_dquots(
1071         xfs_mount_t     *mp,
1072         xfs_dqid_t      uid,
1073         xfs_dqid_t      projid,
1074         xfs_dqid_t      gid,
1075         xfs_dqtest_t    **ud,
1076         xfs_dqtest_t    **gd)
1077 {
1078         if (XFS_IS_UQUOTA_ON(mp))
1079                 xfs_qm_internalqcheck_dqget(mp, uid, XFS_DQ_USER, ud);
1080         if (XFS_IS_GQUOTA_ON(mp))
1081                 xfs_qm_internalqcheck_dqget(mp, gid, XFS_DQ_GROUP, gd);
1082         else if (XFS_IS_PQUOTA_ON(mp))
1083                 xfs_qm_internalqcheck_dqget(mp, projid, XFS_DQ_PROJ, gd);
1084 }
1085
1086
1087 STATIC void
1088 xfs_qm_internalqcheck_dqadjust(
1089         xfs_inode_t             *ip,
1090         xfs_dqtest_t            *d)
1091 {
1092         d->d_icount++;
1093         d->d_bcount += (xfs_qcnt_t)ip->i_d.di_nblocks;
1094 }
1095
1096 STATIC int
1097 xfs_qm_internalqcheck_adjust(
1098         xfs_mount_t     *mp,            /* mount point for filesystem */
1099         xfs_ino_t       ino,            /* inode number to get data for */
1100         void            __user *buffer, /* not used */
1101         int             ubsize,         /* not used */
1102         int             *ubused,        /* not used */
1103         int             *res)           /* bulkstat result code */
1104 {
1105         xfs_inode_t             *ip;
1106         xfs_dqtest_t            *ud, *gd;
1107         uint                    lock_flags;
1108         boolean_t               ipreleased;
1109         int                     error;
1110
1111         ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1112
1113         if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) {
1114                 *res = BULKSTAT_RV_NOTHING;
1115                 qdprintk("internalqcheck: ino=%llu, uqino=%llu, gqino=%llu\n",
1116                         (unsigned long long) ino,
1117                         (unsigned long long) mp->m_sb.sb_uquotino,
1118                         (unsigned long long) mp->m_sb.sb_gquotino);
1119                 return XFS_ERROR(EINVAL);
1120         }
1121         ipreleased = B_FALSE;
1122  again:
1123         lock_flags = XFS_ILOCK_SHARED;
1124         if ((error = xfs_iget(mp, NULL, ino, 0, lock_flags, &ip))) {
1125                 *res = BULKSTAT_RV_NOTHING;
1126                 return (error);
1127         }
1128
1129         /*
1130          * This inode can have blocks after eof which can get released
1131          * when we send it to inactive. Since we don't check the dquot
1132          * until the after all our calculations are done, we must get rid
1133          * of those now.
1134          */
1135         if (! ipreleased) {
1136                 xfs_iput(ip, lock_flags);
1137                 ipreleased = B_TRUE;
1138                 goto again;
1139         }
1140         xfs_qm_internalqcheck_get_dquots(mp,
1141                                         (xfs_dqid_t) ip->i_d.di_uid,
1142                                         (xfs_dqid_t) ip->i_d.di_projid,
1143                                         (xfs_dqid_t) ip->i_d.di_gid,
1144                                         &ud, &gd);
1145         if (XFS_IS_UQUOTA_ON(mp)) {
1146                 ASSERT(ud);
1147                 xfs_qm_internalqcheck_dqadjust(ip, ud);
1148         }
1149         if (XFS_IS_OQUOTA_ON(mp)) {
1150                 ASSERT(gd);
1151                 xfs_qm_internalqcheck_dqadjust(ip, gd);
1152         }
1153         xfs_iput(ip, lock_flags);
1154         *res = BULKSTAT_RV_DIDONE;
1155         return (0);
1156 }
1157
1158
1159 /* PRIVATE, debugging */
1160 int
1161 xfs_qm_internalqcheck(
1162         xfs_mount_t     *mp)
1163 {
1164         xfs_ino_t       lastino;
1165         int             done, count;
1166         int             i;
1167         int             error;
1168
1169         lastino = 0;
1170         qmtest_hashmask = 32;
1171         count = 5;
1172         done = 0;
1173         qmtest_nfails = 0;
1174
1175         if (! XFS_IS_QUOTA_ON(mp))
1176                 return XFS_ERROR(ESRCH);
1177
1178         xfs_log_force(mp, XFS_LOG_SYNC);
1179         XFS_bflush(mp->m_ddev_targp);
1180         xfs_log_force(mp, XFS_LOG_SYNC);
1181         XFS_bflush(mp->m_ddev_targp);
1182
1183         mutex_lock(&qcheck_lock);
1184         /* There should be absolutely no quota activity while this
1185            is going on. */
1186         qmtest_udqtab = kmem_zalloc(qmtest_hashmask *
1187                                     sizeof(xfs_dqhash_t), KM_SLEEP);
1188         qmtest_gdqtab = kmem_zalloc(qmtest_hashmask *
1189                                     sizeof(xfs_dqhash_t), KM_SLEEP);
1190         do {
1191                 /*
1192                  * Iterate thru all the inodes in the file system,
1193                  * adjusting the corresponding dquot counters
1194                  */
1195                 error = xfs_bulkstat(mp, &lastino, &count,
1196                                  xfs_qm_internalqcheck_adjust,
1197                                  0, NULL, &done);
1198                 if (error) {
1199                         cmn_err(CE_DEBUG, "Bulkstat returned error 0x%x", error);
1200                         break;
1201                 }
1202         } while (!done);
1203
1204         cmn_err(CE_DEBUG, "Checking results against system dquots");
1205         for (i = 0; i < qmtest_hashmask; i++) {
1206                 xfs_dqtest_t    *d, *n;
1207                 xfs_dqhash_t    *h;
1208
1209                 h = &qmtest_udqtab[i];
1210                 list_for_each_entry_safe(d, n, &h->qh_list, q_hashlist) {
1211                         xfs_dqtest_cmp(d);
1212                         kmem_free(d);
1213                 }
1214                 h = &qmtest_gdqtab[i];
1215                 list_for_each_entry_safe(d, n, &h->qh_list, q_hashlist) {
1216                         xfs_dqtest_cmp(d);
1217                         kmem_free(d);
1218                 }
1219         }
1220
1221         if (qmtest_nfails) {
1222                 cmn_err(CE_DEBUG, "******** quotacheck failed  ********");
1223                 cmn_err(CE_DEBUG, "failures = %d", qmtest_nfails);
1224         } else {
1225                 cmn_err(CE_DEBUG, "******** quotacheck successful! ********");
1226         }
1227         kmem_free(qmtest_udqtab);
1228         kmem_free(qmtest_gdqtab);
1229         mutex_unlock(&qcheck_lock);
1230         return (qmtest_nfails);
1231 }
1232
1233 #endif /* DEBUG */