git.oblomov.eu Git - linux-2.6/blob - 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_dir2.h"
  30 #include "xfs_alloc.h"
  31 #include "xfs_dmapi.h"
  32 #include "xfs_quota.h"
  33 #include "xfs_mount.h"
  34 #include "xfs_bmap_btree.h"
  35 #include "xfs_alloc_btree.h"
  36 #include "xfs_ialloc_btree.h"
  37 #include "xfs_dir2_sf.h"
  38 #include "xfs_attr_sf.h"
  39 #include "xfs_dinode.h"
  40 #include "xfs_inode.h"
  41 #include "xfs_ialloc.h"
  42 #include "xfs_itable.h"
  43 #include "xfs_bmap.h"
  44 #include "xfs_btree.h"
  45 #include "xfs_rtalloc.h"
  46 #include "xfs_error.h"
  47 #include "xfs_rw.h"
  48 #include "xfs_acl.h"
  49 #include "xfs_attr.h"
  50 #include "xfs_buf_item.h"
  51 #include "xfs_utils.h"
  52 #include "xfs_qm.h"
  53
  54 #ifdef DEBUG
  55 # define qdprintk(s, args...)   cmn_err(CE_DEBUG, s, ## args)
  56 #else
  57 # define qdprintk(s, args...)   do { } while (0)
  58 #endif
  59
  60 STATIC int      xfs_qm_log_quotaoff(xfs_mount_t *, xfs_qoff_logitem_t **, uint);
  61 STATIC int      xfs_qm_log_quotaoff_end(xfs_mount_t *, xfs_qoff_logitem_t *,
  62                                         uint);
  63 STATIC uint     xfs_qm_export_flags(uint);
  64 STATIC uint     xfs_qm_export_qtype_flags(uint);
  65 STATIC void     xfs_qm_export_dquot(xfs_mount_t *, xfs_disk_dquot_t *,
  66                                         fs_disk_quota_t *);
  67
  68
  69 /*
  70  * Turn off quota accounting and/or enforcement for all udquots and/or
  71  * gdquots. Called only at unmount time.
  72  *
  73  * This assumes that there are no dquots of this file system cached
  74  * incore, and modifies the ondisk dquot directly. Therefore, for example,
  75  * it is an error to call this twice, without purging the cache.
  76  */
  77 int
  78 xfs_qm_scall_quotaoff(
  79         xfs_mount_t             *mp,
  80         uint                    flags)
  81 {
  82         uint                    dqtype;
  83         int                     error;
  84         uint                    inactivate_flags;
  85         xfs_qoff_logitem_t      *qoffstart;
  86         int                     nculprits;
  87
  88         /*
  89          * No file system can have quotas enabled on disk but not in core.
  90          * Note that quota utilities (like quotaoff) _expect_
  91          * errno == EEXIST here.
  92          */
  93         if ((mp->m_qflags & flags) == 0)
  94                 return XFS_ERROR(EEXIST);
  95         error = 0;
  96
  97         flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
  98
  99         /*
 100          * We don't want to deal with two quotaoffs messing up each other,
 101          * so we're going to serialize it. quotaoff isn't exactly a performance
 102          * critical thing.
 103          * If quotaoff, then we must be dealing with the root filesystem.
 104          */
 105         ASSERT(mp->m_quotainfo);
 106         if (mp->m_quotainfo)
 107                 mutex_lock(&(XFS_QI_QOFFLOCK(mp)));
 108
 109         ASSERT(mp->m_quotainfo);
 110
 111         /*
 112          * If we're just turning off quota enforcement, change mp and go.
 113          */
 114         if ((flags & XFS_ALL_QUOTA_ACCT) == 0) {
 115                 mp->m_qflags &= ~(flags);
 116
 117                 spin_lock(&mp->m_sb_lock);
 118                 mp->m_sb.sb_qflags = mp->m_qflags;
 119                 spin_unlock(&mp->m_sb_lock);
 120                 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
 121
 122                 /* XXX what to do if error ? Revert back to old vals incore ? */
 123                 error = xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS);
 124                 return (error);
 125         }
 126
 127         dqtype = 0;
 128         inactivate_flags = 0;
 129         /*
 130          * If accounting is off, we must turn enforcement off, clear the
 131          * quota 'CHKD' certificate to make it known that we have to
 132          * do a quotacheck the next time this quota is turned on.
 133          */
 134         if (flags & XFS_UQUOTA_ACCT) {
 135                 dqtype |= XFS_QMOPT_UQUOTA;
 136                 flags |= (XFS_UQUOTA_CHKD | XFS_UQUOTA_ENFD);
 137                 inactivate_flags |= XFS_UQUOTA_ACTIVE;
 138         }
 139         if (flags & XFS_GQUOTA_ACCT) {
 140                 dqtype |= XFS_QMOPT_GQUOTA;
 141                 flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_ENFD);
 142                 inactivate_flags |= XFS_GQUOTA_ACTIVE;
 143         } else if (flags & XFS_PQUOTA_ACCT) {
 144                 dqtype |= XFS_QMOPT_PQUOTA;
 145                 flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_ENFD);
 146                 inactivate_flags |= XFS_PQUOTA_ACTIVE;
 147         }
 148
 149         /*
 150          * Nothing to do?  Don't complain. This happens when we're just
 151          * turning off quota enforcement.
 152          */
 153         if ((mp->m_qflags & flags) == 0) {
 154                 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
 155                 return (0);
 156         }
 157
 158         /*
 159          * Write the LI_QUOTAOFF log record, and do SB changes atomically,
 160          * and synchronously. If we fail to write, we should abort the
 161          * operation as it cannot be recovered safely if we crash.
 162          */
 163         error = xfs_qm_log_quotaoff(mp, &qoffstart, flags);
 164         if (error)
 165                 goto out_error;
 166
 167         /*
 168          * Next we clear the XFS_MOUNT_*DQ_ACTIVE bit(s) in the mount struct
 169          * to take care of the race between dqget and quotaoff. We don't take
 170          * any special locks to reset these bits. All processes need to check
 171          * these bits *after* taking inode lock(s) to see if the particular
 172          * quota type is in the process of being turned off. If *ACTIVE, it is
 173          * guaranteed that all dquot structures and all quotainode ptrs will all
 174          * stay valid as long as that inode is kept locked.
 175          *
 176          * There is no turning back after this.
 177          */
 178         mp->m_qflags &= ~inactivate_flags;
 179
 180         /*
 181          * Give back all the dquot reference(s) held by inodes.
 182          * Here we go thru every single incore inode in this file system, and
 183          * do a dqrele on the i_udquot/i_gdquot that it may have.
 184          * Essentially, as long as somebody has an inode locked, this guarantees
 185          * that quotas will not be turned off. This is handy because in a
 186          * transaction once we lock the inode(s) and check for quotaon, we can
 187          * depend on the quota inodes (and other things) being valid as long as
 188          * we keep the lock(s).
 189          */
 190         xfs_qm_dqrele_all_inodes(mp, flags);
 191
 192         /*
 193          * Next we make the changes in the quota flag in the mount struct.
 194          * This isn't protected by a particular lock directly, because we
 195          * don't want to take a mrlock everytime we depend on quotas being on.
 196          */
 197         mp->m_qflags &= ~(flags);
 198
 199         /*
 200          * Go through all the dquots of this file system and purge them,
 201          * according to what was turned off. We may not be able to get rid
 202          * of all dquots, because dquots can have temporary references that
 203          * are not attached to inodes. eg. xfs_setattr, xfs_create.
 204          * So, if we couldn't purge all the dquots from the filesystem,
 205          * we can't get rid of the incore data structures.
 206          */
 207         while ((nculprits = xfs_qm_dqpurge_all(mp, dqtype|XFS_QMOPT_QUOTAOFF)))
 208                 delay(10 * nculprits);
 209
 210         /*
 211          * Transactions that had started before ACTIVE state bit was cleared
 212          * could have logged many dquots, so they'd have higher LSNs than
 213          * the first QUOTAOFF log record does. If we happen to crash when
 214          * the tail of the log has gone past the QUOTAOFF record, but
 215          * before the last dquot modification, those dquots __will__
 216          * recover, and that's not good.
 217          *
 218          * So, we have QUOTAOFF start and end logitems; the start
 219          * logitem won't get overwritten until the end logitem appears...
 220          */
 221         error = xfs_qm_log_quotaoff_end(mp, qoffstart, flags);
 222         if (error) {
 223                 /* We're screwed now. Shutdown is the only option. */
 224                 xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
 225                 goto out_error;
 226         }
 227
 228         /*
 229          * If quotas is completely disabled, close shop.
 230          */
 231         if (((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET1) ||
 232             ((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET2)) {
 233                 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
 234                 xfs_qm_destroy_quotainfo(mp);
 235                 return (0);
 236         }
 237
 238         /*
 239          * Release our quotainode references, and vn_purge them,
 240          * if we don't need them anymore.
 241          */
 242         if ((dqtype & XFS_QMOPT_UQUOTA) && XFS_QI_UQIP(mp)) {
 243                 IRELE(XFS_QI_UQIP(mp));
 244                 XFS_QI_UQIP(mp) = NULL;
 245         }
 246         if ((dqtype & (XFS_QMOPT_GQUOTA|XFS_QMOPT_PQUOTA)) && XFS_QI_GQIP(mp)) {
 247                 IRELE(XFS_QI_GQIP(mp));
 248                 XFS_QI_GQIP(mp) = NULL;
 249         }
 250 out_error:
 251         mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
 252
 253         return (error);
 254 }
 255
 256 int
 257 xfs_qm_scall_trunc_qfiles(
 258         xfs_mount_t     *mp,
 259         uint            flags)
 260 {
 261         int             error = 0, error2 = 0;
 262         xfs_inode_t     *qip;
 263
 264         if (!xfs_sb_version_hasquota(&mp->m_sb) || flags == 0) {
 265                 qdprintk("qtrunc flags=%x m_qflags=%x\n", flags, mp->m_qflags);
 266                 return XFS_ERROR(EINVAL);
 267         }
 268
 269         if ((flags & XFS_DQ_USER) && mp->m_sb.sb_uquotino != NULLFSINO) {
 270                 error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, 0, 0, &qip, 0);
 271                 if (!error) {
 272                         error = xfs_truncate_file(mp, qip);
 273                         IRELE(qip);
 274                 }
 275         }
 276
 277         if ((flags & (XFS_DQ_GROUP|XFS_DQ_PROJ)) &&
 278             mp->m_sb.sb_gquotino != NULLFSINO) {
 279                 error2 = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, 0, 0, &qip, 0);
 280                 if (!error2) {
 281                         error2 = xfs_truncate_file(mp, qip);
 282                         IRELE(qip);
 283                 }
 284         }
 285
 286         return error ? error : error2;
 287 }
 288
 289
 290 /*
 291  * Switch on (a given) quota enforcement for a filesystem.  This takes
 292  * effect immediately.
 293  * (Switching on quota accounting must be done at mount time.)
 294  */
 295 int
 296 xfs_qm_scall_quotaon(
 297         xfs_mount_t     *mp,
 298         uint            flags)
 299 {
 300         int             error;
 301         uint            qf;
 302         uint            accflags;
 303         __int64_t       sbflags;
 304
 305         flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
 306         /*
 307          * Switching on quota accounting must be done at mount time.
 308          */
 309         accflags = flags & XFS_ALL_QUOTA_ACCT;
 310         flags &= ~(XFS_ALL_QUOTA_ACCT);
 311
 312         sbflags = 0;
 313
 314         if (flags == 0) {
 315                 qdprintk("quotaon: zero flags, m_qflags=%x\n", mp->m_qflags);
 316                 return XFS_ERROR(EINVAL);
 317         }
 318
 319         /* No fs can turn on quotas with a delayed effect */
 320         ASSERT((flags & XFS_ALL_QUOTA_ACCT) == 0);
 321
 322         /*
 323          * Can't enforce without accounting. We check the superblock
 324          * qflags here instead of m_qflags because rootfs can have
 325          * quota acct on ondisk without m_qflags' knowing.
 326          */
 327         if (((flags & XFS_UQUOTA_ACCT) == 0 &&
 328             (mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) == 0 &&
 329             (flags & XFS_UQUOTA_ENFD))
 330             ||
 331             ((flags & XFS_PQUOTA_ACCT) == 0 &&
 332             (mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) == 0 &&
 333             (flags & XFS_GQUOTA_ACCT) == 0 &&
 334             (mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) == 0 &&
 335             (flags & XFS_OQUOTA_ENFD))) {
 336                 qdprintk("Can't enforce without acct, flags=%x sbflags=%x\n",
 337                         flags, mp->m_sb.sb_qflags);
 338                 return XFS_ERROR(EINVAL);
 339         }
 340         /*
 341          * If everything's upto-date incore, then don't waste time.
 342          */
 343         if ((mp->m_qflags & flags) == flags)
 344                 return XFS_ERROR(EEXIST);
 345
 346         /*
 347          * Change sb_qflags on disk but not incore mp->qflags
 348          * if this is the root filesystem.
 349          */
 350         spin_lock(&mp->m_sb_lock);
 351         qf = mp->m_sb.sb_qflags;
 352         mp->m_sb.sb_qflags = qf | flags;
 353         spin_unlock(&mp->m_sb_lock);
 354
 355         /*
 356          * There's nothing to change if it's the same.
 357          */
 358         if ((qf & flags) == flags && sbflags == 0)
 359                 return XFS_ERROR(EEXIST);
 360         sbflags |= XFS_SB_QFLAGS;
 361
 362         if ((error = xfs_qm_write_sb_changes(mp, sbflags)))
 363                 return (error);
 364         /*
 365          * If we aren't trying to switch on quota enforcement, we are done.
 366          */
 367         if  (((mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) !=
 368              (mp->m_qflags & XFS_UQUOTA_ACCT)) ||
 369              ((mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) !=
 370              (mp->m_qflags & XFS_PQUOTA_ACCT)) ||
 371              ((mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) !=
 372              (mp->m_qflags & XFS_GQUOTA_ACCT)) ||
 373             (flags & XFS_ALL_QUOTA_ENFD) == 0)
 374                 return (0);
 375
 376         if (! XFS_IS_QUOTA_RUNNING(mp))
 377                 return XFS_ERROR(ESRCH);
 378
 379         /*
 380          * Switch on quota enforcement in core.
 381          */
 382         mutex_lock(&(XFS_QI_QOFFLOCK(mp)));
 383         mp->m_qflags |= (flags & XFS_ALL_QUOTA_ENFD);
 384         mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
 385
 386         return (0);
 387 }
 388
 389
 390 /*
 391  * Return quota status information, such as uquota-off, enforcements, etc.
 392  */
 393 int
 394 xfs_qm_scall_getqstat(
 395         xfs_mount_t     *mp,
 396         fs_quota_stat_t *out)
 397 {
 398         xfs_inode_t     *uip, *gip;
 399         boolean_t       tempuqip, tempgqip;
 400
 401         uip = gip = NULL;
 402         tempuqip = tempgqip = B_FALSE;
 403         memset(out, 0, sizeof(fs_quota_stat_t));
 404
 405         out->qs_version = FS_QSTAT_VERSION;
 406         if (!xfs_sb_version_hasquota(&mp->m_sb)) {
 407                 out->qs_uquota.qfs_ino = NULLFSINO;
 408                 out->qs_gquota.qfs_ino = NULLFSINO;
 409                 return (0);
 410         }
 411         out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
 412                                                         (XFS_ALL_QUOTA_ACCT|
 413                                                          XFS_ALL_QUOTA_ENFD));
 414         out->qs_pad = 0;
 415         out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
 416         out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
 417
 418         if (mp->m_quotainfo) {
 419                 uip = mp->m_quotainfo->qi_uquotaip;
 420                 gip = mp->m_quotainfo->qi_gquotaip;
 421         }
 422         if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
 423                 if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
 424                                         0, 0, &uip, 0) == 0)
 425                         tempuqip = B_TRUE;
 426         }
 427         if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
 428                 if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
 429                                         0, 0, &gip, 0) == 0)
 430                         tempgqip = B_TRUE;
 431         }
 432         if (uip) {
 433                 out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks;
 434                 out->qs_uquota.qfs_nextents = uip->i_d.di_nextents;
 435                 if (tempuqip)
 436                         IRELE(uip);
 437         }
 438         if (gip) {
 439                 out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks;
 440                 out->qs_gquota.qfs_nextents = gip->i_d.di_nextents;
 441                 if (tempgqip)
 442                         IRELE(gip);
 443         }
 444         if (mp->m_quotainfo) {
 445                 out->qs_incoredqs = XFS_QI_MPLNDQUOTS(mp);
 446                 out->qs_btimelimit = XFS_QI_BTIMELIMIT(mp);
 447                 out->qs_itimelimit = XFS_QI_ITIMELIMIT(mp);
 448                 out->qs_rtbtimelimit = XFS_QI_RTBTIMELIMIT(mp);
 449                 out->qs_bwarnlimit = XFS_QI_BWARNLIMIT(mp);
 450                 out->qs_iwarnlimit = XFS_QI_IWARNLIMIT(mp);
 451         }
 452         return (0);
 453 }
 454
 455 /*
 456  * Adjust quota limits, and start/stop timers accordingly.
 457  */
 458 int
 459 xfs_qm_scall_setqlim(
 460         xfs_mount_t             *mp,
 461         xfs_dqid_t              id,
 462         uint                    type,
 463         fs_disk_quota_t         *newlim)
 464 {
 465         xfs_disk_dquot_t        *ddq;
 466         xfs_dquot_t             *dqp;
 467         xfs_trans_t             *tp;
 468         int                     error;
 469         xfs_qcnt_t              hard, soft;
 470
 471         if ((newlim->d_fieldmask &
 472             (FS_DQ_LIMIT_MASK|FS_DQ_TIMER_MASK|FS_DQ_WARNS_MASK)) == 0)
 473                 return (0);
 474
 475         tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SETQLIM);
 476         if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_disk_dquot_t) + 128,
 477                                       0, 0, XFS_DEFAULT_LOG_COUNT))) {
 478                 xfs_trans_cancel(tp, 0);
 479                 return (error);
 480         }
 481
 482         /*
 483          * We don't want to race with a quotaoff so take the quotaoff lock.
 484          * (We don't hold an inode lock, so there's nothing else to stop
 485          * a quotaoff from happening). (XXXThis doesn't currently happen
 486          * because we take the vfslock before calling xfs_qm_sysent).
 487          */
 488         mutex_lock(&(XFS_QI_QOFFLOCK(mp)));
 489
 490         /*
 491          * Get the dquot (locked), and join it to the transaction.
 492          * Allocate the dquot if this doesn't exist.
 493          */
 494         if ((error = xfs_qm_dqget(mp, NULL, id, type, XFS_QMOPT_DQALLOC, &dqp))) {
 495                 xfs_trans_cancel(tp, XFS_TRANS_ABORT);
 496                 mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
 497                 ASSERT(error != ENOENT);
 498                 return (error);
 499         }
 500         xfs_dqtrace_entry(dqp, "Q_SETQLIM: AFT DQGET");
 501         xfs_trans_dqjoin(tp, dqp);
 502         ddq = &dqp->q_core;
 503
 504         /*
 505          * Make sure that hardlimits are >= soft limits before changing.
 506          */
 507         hard = (newlim->d_fieldmask & FS_DQ_BHARD) ?
 508                 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_hardlimit) :
 509                         be64_to_cpu(ddq->d_blk_hardlimit);
 510         soft = (newlim->d_fieldmask & FS_DQ_BSOFT) ?
 511                 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_softlimit) :
 512                         be64_to_cpu(ddq->d_blk_softlimit);
 513         if (hard == 0 || hard >= soft) {
 514                 ddq->d_blk_hardlimit = cpu_to_be64(hard);
 515                 ddq->d_blk_softlimit = cpu_to_be64(soft);
 516                 if (id == 0) {
 517                         mp->m_quotainfo->qi_bhardlimit = hard;
 518                         mp->m_quotainfo->qi_bsoftlimit = soft;
 519                 }
 520         } else {
 521                 qdprintk("blkhard %Ld < blksoft %Ld\n", hard, soft);
 522         }
 523         hard = (newlim->d_fieldmask & FS_DQ_RTBHARD) ?
 524                 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_hardlimit) :
 525                         be64_to_cpu(ddq->d_rtb_hardlimit);
 526         soft = (newlim->d_fieldmask & FS_DQ_RTBSOFT) ?
 527                 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_softlimit) :
 528                         be64_to_cpu(ddq->d_rtb_softlimit);
 529         if (hard == 0 || hard >= soft) {
 530                 ddq->d_rtb_hardlimit = cpu_to_be64(hard);
 531                 ddq->d_rtb_softlimit = cpu_to_be64(soft);
 532                 if (id == 0) {
 533                         mp->m_quotainfo->qi_rtbhardlimit = hard;
 534                         mp->m_quotainfo->qi_rtbsoftlimit = soft;
 535                 }
 536         } else {
 537                 qdprintk("rtbhard %Ld < rtbsoft %Ld\n", hard, soft);
 538         }
 539
 540         hard = (newlim->d_fieldmask & FS_DQ_IHARD) ?
 541                 (xfs_qcnt_t) newlim->d_ino_hardlimit :
 542                         be64_to_cpu(ddq->d_ino_hardlimit);
 543         soft = (newlim->d_fieldmask & FS_DQ_ISOFT) ?
 544                 (xfs_qcnt_t) newlim->d_ino_softlimit :
 545                         be64_to_cpu(ddq->d_ino_softlimit);
 546         if (hard == 0 || hard >= soft) {
 547                 ddq->d_ino_hardlimit = cpu_to_be64(hard);
 548                 ddq->d_ino_softlimit = cpu_to_be64(soft);
 549                 if (id == 0) {
 550                         mp->m_quotainfo->qi_ihardlimit = hard;
 551                         mp->m_quotainfo->qi_isoftlimit = soft;
 552                 }
 553         } else {
 554                 qdprintk("ihard %Ld < isoft %Ld\n", hard, soft);
 555         }
 556
 557         /*
 558          * Update warnings counter(s) if requested
 559          */
 560         if (newlim->d_fieldmask & FS_DQ_BWARNS)
 561                 ddq->d_bwarns = cpu_to_be16(newlim->d_bwarns);
 562         if (newlim->d_fieldmask & FS_DQ_IWARNS)
 563                 ddq->d_iwarns = cpu_to_be16(newlim->d_iwarns);
 564         if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
 565                 ddq->d_rtbwarns = cpu_to_be16(newlim->d_rtbwarns);
 566
 567         if (id == 0) {
 568                 /*
 569                  * Timelimits for the super user set the relative time
 570                  * the other users can be over quota for this file system.
 571                  * If it is zero a default is used.  Ditto for the default
 572                  * soft and hard limit values (already done, above), and
 573                  * for warnings.
 574                  */
 575                 if (newlim->d_fieldmask & FS_DQ_BTIMER) {
 576                         mp->m_quotainfo->qi_btimelimit = newlim->d_btimer;
 577                         ddq->d_btimer = cpu_to_be32(newlim->d_btimer);
 578                 }
 579                 if (newlim->d_fieldmask & FS_DQ_ITIMER) {
 580                         mp->m_quotainfo->qi_itimelimit = newlim->d_itimer;
 581                         ddq->d_itimer = cpu_to_be32(newlim->d_itimer);
 582                 }
 583                 if (newlim->d_fieldmask & FS_DQ_RTBTIMER) {
 584                         mp->m_quotainfo->qi_rtbtimelimit = newlim->d_rtbtimer;
 585                         ddq->d_rtbtimer = cpu_to_be32(newlim->d_rtbtimer);
 586                 }
 587                 if (newlim->d_fieldmask & FS_DQ_BWARNS)
 588                         mp->m_quotainfo->qi_bwarnlimit = newlim->d_bwarns;
 589                 if (newlim->d_fieldmask & FS_DQ_IWARNS)
 590                         mp->m_quotainfo->qi_iwarnlimit = newlim->d_iwarns;
 591                 if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
 592                         mp->m_quotainfo->qi_rtbwarnlimit = newlim->d_rtbwarns;
 593         } else {
 594                 /*
 595                  * If the user is now over quota, start the timelimit.
 596                  * The user will not be 'warned'.
 597                  * Note that we keep the timers ticking, whether enforcement
 598                  * is on or off. We don't really want to bother with iterating
 599                  * over all ondisk dquots and turning the timers on/off.
 600                  */
 601                 xfs_qm_adjust_dqtimers(mp, ddq);
 602         }
 603         dqp->dq_flags |= XFS_DQ_DIRTY;
 604         xfs_trans_log_dquot(tp, dqp);
 605
 606         xfs_dqtrace_entry(dqp, "Q_SETQLIM: COMMIT");
 607         error = xfs_trans_commit(tp, 0);
 608         xfs_qm_dqprint(dqp);
 609         xfs_qm_dqrele(dqp);
 610         mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
 611
 612         return error;
 613 }
 614
 615 int
 616 xfs_qm_scall_getquota(
 617         xfs_mount_t     *mp,
 618         xfs_dqid_t      id,
 619         uint            type,
 620         fs_disk_quota_t *out)
 621 {
 622         xfs_dquot_t     *dqp;
 623         int             error;
 624
 625         /*
 626          * Try to get the dquot. We don't want it allocated on disk, so
 627          * we aren't passing the XFS_QMOPT_DOALLOC flag. If it doesn't
 628          * exist, we'll get ENOENT back.
 629          */
 630         if ((error = xfs_qm_dqget(mp, NULL, id, type, 0, &dqp))) {
 631                 return (error);
 632         }
 633
 634         xfs_dqtrace_entry(dqp, "Q_GETQUOTA SUCCESS");
 635         /*
 636          * If everything's NULL, this dquot doesn't quite exist as far as
 637          * our utility programs are concerned.
 638          */
 639         if (XFS_IS_DQUOT_UNINITIALIZED(dqp)) {
 640                 xfs_qm_dqput(dqp);
 641                 return XFS_ERROR(ENOENT);
 642         }
 643         /* xfs_qm_dqprint(dqp); */
 644         /*
 645          * Convert the disk dquot to the exportable format
 646          */
 647         xfs_qm_export_dquot(mp, &dqp->q_core, out);
 648         xfs_qm_dqput(dqp);
 649         return (error ? XFS_ERROR(EFAULT) : 0);
 650 }
 651
 652
 653 STATIC int
 654 xfs_qm_log_quotaoff_end(
 655         xfs_mount_t             *mp,
 656         xfs_qoff_logitem_t      *startqoff,
 657         uint                    flags)
 658 {
 659         xfs_trans_t             *tp;
 660         int                     error;
 661         xfs_qoff_logitem_t      *qoffi;
 662
 663         tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF_END);
 664
 665         if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_qoff_logitem_t) * 2,
 666                                       0, 0, XFS_DEFAULT_LOG_COUNT))) {
 667                 xfs_trans_cancel(tp, 0);
 668                 return (error);
 669         }
 670
 671         qoffi = xfs_trans_get_qoff_item(tp, startqoff,
 672                                         flags & XFS_ALL_QUOTA_ACCT);
 673         xfs_trans_log_quotaoff_item(tp, qoffi);
 674
 675         /*
 676          * We have to make sure that the transaction is secure on disk before we
 677          * return and actually stop quota accounting. So, make it synchronous.
 678          * We don't care about quotoff's performance.
 679          */
 680         xfs_trans_set_sync(tp);
 681         error = xfs_trans_commit(tp, 0);
 682         return (error);
 683 }
 684
 685
 686 STATIC int
 687 xfs_qm_log_quotaoff(
 688         xfs_mount_t            *mp,
 689         xfs_qoff_logitem_t     **qoffstartp,
 690         uint                   flags)
 691 {
 692         xfs_trans_t            *tp;
 693         int                     error;
 694         xfs_qoff_logitem_t     *qoffi=NULL;
 695         uint                    oldsbqflag=0;
 696
 697         tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF);
 698         if ((error = xfs_trans_reserve(tp, 0,
 699                                       sizeof(xfs_qoff_logitem_t) * 2 +
 700                                       mp->m_sb.sb_sectsize + 128,
 701                                       0,
 702                                       0,
 703                                       XFS_DEFAULT_LOG_COUNT))) {
 704                 goto error0;
 705         }
 706
 707         qoffi = xfs_trans_get_qoff_item(tp, NULL, flags & XFS_ALL_QUOTA_ACCT);
 708         xfs_trans_log_quotaoff_item(tp, qoffi);
 709
 710         spin_lock(&mp->m_sb_lock);
 711         oldsbqflag = mp->m_sb.sb_qflags;
 712         mp->m_sb.sb_qflags = (mp->m_qflags & ~(flags)) & XFS_MOUNT_QUOTA_ALL;
 713         spin_unlock(&mp->m_sb_lock);
 714
 715         xfs_mod_sb(tp, XFS_SB_QFLAGS);
 716
 717         /*
 718          * We have to make sure that the transaction is secure on disk before we
 719          * return and actually stop quota accounting. So, make it synchronous.
 720          * We don't care about quotoff's performance.
 721          */
 722         xfs_trans_set_sync(tp);
 723         error = xfs_trans_commit(tp, 0);
 724
 725 error0:
 726         if (error) {
 727                 xfs_trans_cancel(tp, 0);
 728                 /*
 729                  * No one else is modifying sb_qflags, so this is OK.
 730                  * We still hold the quotaofflock.
 731                  */
 732                 spin_lock(&mp->m_sb_lock);
 733                 mp->m_sb.sb_qflags = oldsbqflag;
 734                 spin_unlock(&mp->m_sb_lock);
 735         }
 736         *qoffstartp = qoffi;
 737         return (error);
 738 }
 739
 740
 741 /*
 742  * Translate an internal style on-disk-dquot to the exportable format.
 743  * The main differences are that the counters/limits are all in Basic
 744  * Blocks (BBs) instead of the internal FSBs, and all on-disk data has
 745  * to be converted to the native endianness.
 746  */
 747 STATIC void
 748 xfs_qm_export_dquot(
 749         xfs_mount_t             *mp,
 750         xfs_disk_dquot_t        *src,
 751         struct fs_disk_quota    *dst)
 752 {
 753         memset(dst, 0, sizeof(*dst));
 754         dst->d_version = FS_DQUOT_VERSION;  /* different from src->d_version */
 755         dst->d_flags = xfs_qm_export_qtype_flags(src->d_flags);
 756         dst->d_id = be32_to_cpu(src->d_id);
 757         dst->d_blk_hardlimit =
 758                 XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_blk_hardlimit));
 759         dst->d_blk_softlimit =
 760                 XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_blk_softlimit));
 761         dst->d_ino_hardlimit = be64_to_cpu(src->d_ino_hardlimit);
 762         dst->d_ino_softlimit = be64_to_cpu(src->d_ino_softlimit);
 763         dst->d_bcount = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_bcount));
 764         dst->d_icount = be64_to_cpu(src->d_icount);
 765         dst->d_btimer = be32_to_cpu(src->d_btimer);
 766         dst->d_itimer = be32_to_cpu(src->d_itimer);
 767         dst->d_iwarns = be16_to_cpu(src->d_iwarns);
 768         dst->d_bwarns = be16_to_cpu(src->d_bwarns);
 769         dst->d_rtb_hardlimit =
 770                 XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtb_hardlimit));
 771         dst->d_rtb_softlimit =
 772                 XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtb_softlimit));
 773         dst->d_rtbcount = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtbcount));
 774         dst->d_rtbtimer = be32_to_cpu(src->d_rtbtimer);
 775         dst->d_rtbwarns = be16_to_cpu(src->d_rtbwarns);
 776
 777         /*
 778          * Internally, we don't reset all the timers when quota enforcement
 779          * gets turned off. No need to confuse the user level code,
 780          * so return zeroes in that case.
 781          */
 782         if ((!XFS_IS_UQUOTA_ENFORCED(mp) && src->d_flags == XFS_DQ_USER) ||
 783             (!XFS_IS_OQUOTA_ENFORCED(mp) &&
 784                         (src->d_flags & (XFS_DQ_PROJ | XFS_DQ_GROUP)))) {
 785                 dst->d_btimer = 0;
 786                 dst->d_itimer = 0;
 787                 dst->d_rtbtimer = 0;
 788         }
 789
 790 #ifdef DEBUG
 791         if (((XFS_IS_UQUOTA_ENFORCED(mp) && dst->d_flags == XFS_USER_QUOTA) ||
 792              (XFS_IS_OQUOTA_ENFORCED(mp) &&
 793                         (dst->d_flags & (XFS_PROJ_QUOTA | XFS_GROUP_QUOTA)))) &&
 794             dst->d_id != 0) {
 795                 if (((int) dst->d_bcount >= (int) dst->d_blk_softlimit) &&
 796                     (dst->d_blk_softlimit > 0)) {
 797                         ASSERT(dst->d_btimer != 0);
 798                 }
 799                 if (((int) dst->d_icount >= (int) dst->d_ino_softlimit) &&
 800                     (dst->d_ino_softlimit > 0)) {
 801                         ASSERT(dst->d_itimer != 0);
 802                 }
 803         }
 804 #endif
 805 }
 806
 807 STATIC uint
 808 xfs_qm_export_qtype_flags(
 809         uint flags)
 810 {
 811         /*
 812          * Can't be more than one, or none.
 813          */
 814         ASSERT((flags & (XFS_PROJ_QUOTA | XFS_USER_QUOTA)) !=
 815                 (XFS_PROJ_QUOTA | XFS_USER_QUOTA));
 816         ASSERT((flags & (XFS_PROJ_QUOTA | XFS_GROUP_QUOTA)) !=
 817                 (XFS_PROJ_QUOTA | XFS_GROUP_QUOTA));
 818         ASSERT((flags & (XFS_USER_QUOTA | XFS_GROUP_QUOTA)) !=
 819                 (XFS_USER_QUOTA | XFS_GROUP_QUOTA));
 820         ASSERT((flags & (XFS_PROJ_QUOTA|XFS_USER_QUOTA|XFS_GROUP_QUOTA)) != 0);
 821
 822         return (flags & XFS_DQ_USER) ?
 823                 XFS_USER_QUOTA : (flags & XFS_DQ_PROJ) ?
 824                         XFS_PROJ_QUOTA : XFS_GROUP_QUOTA;
 825 }
 826
 827 STATIC uint
 828 xfs_qm_export_flags(
 829         uint flags)
 830 {
 831         uint uflags;
 832
 833         uflags = 0;
 834         if (flags & XFS_UQUOTA_ACCT)
 835                 uflags |= XFS_QUOTA_UDQ_ACCT;
 836         if (flags & XFS_PQUOTA_ACCT)
 837                 uflags |= XFS_QUOTA_PDQ_ACCT;
 838         if (flags & XFS_GQUOTA_ACCT)
 839                 uflags |= XFS_QUOTA_GDQ_ACCT;
 840         if (flags & XFS_UQUOTA_ENFD)
 841                 uflags |= XFS_QUOTA_UDQ_ENFD;
 842         if (flags & (XFS_OQUOTA_ENFD)) {
 843                 uflags |= (flags & XFS_GQUOTA_ACCT) ?
 844                         XFS_QUOTA_GDQ_ENFD : XFS_QUOTA_PDQ_ENFD;
 845         }
 846         return (uflags);
 847 }
 848
 849
 850 /*
 851  * Release all the dquots on the inodes in an AG.
 852  */
 853 STATIC void
 854 xfs_qm_dqrele_inodes_ag(
 855         xfs_mount_t     *mp,
 856         int             ag,
 857         uint            flags)
 858 {
 859         xfs_inode_t     *ip = NULL;
 860         xfs_perag_t     *pag = &mp->m_perag[ag];
 861         int             first_index = 0;
 862         int             nr_found;
 863
 864         do {
 865                 /*
 866                  * use a gang lookup to find the next inode in the tree
 867                  * as the tree is sparse and a gang lookup walks to find
 868                  * the number of objects requested.
 869                  */
 870                 read_lock(&pag->pag_ici_lock);
 871                 nr_found = radix_tree_gang_lookup(&pag->pag_ici_root,
 872                                 (void**)&ip, first_index, 1);
 873
 874                 if (!nr_found) {
 875                         read_unlock(&pag->pag_ici_lock);
 876                         break;
 877                 }
 878
 879                 /*
 880                  * Update the index for the next lookup. Catch overflows
 881                  * into the next AG range which can occur if we have inodes
 882                  * in the last block of the AG and we are currently
 883                  * pointing to the last inode.
 884                  */
 885                 first_index = XFS_INO_TO_AGINO(mp, ip->i_ino + 1);
 886                 if (first_index < XFS_INO_TO_AGINO(mp, ip->i_ino)) {
 887                         read_unlock(&pag->pag_ici_lock);
 888                         break;
 889                 }
 890
 891                 /* skip quota inodes */
 892                 if (ip == XFS_QI_UQIP(mp) || ip == XFS_QI_GQIP(mp)) {
 893                         ASSERT(ip->i_udquot == NULL);
 894                         ASSERT(ip->i_gdquot == NULL);
 895                         read_unlock(&pag->pag_ici_lock);
 896                         continue;
 897                 }
 898
 899                 /*
 900                  * If we can't get a reference on the inode, it must be
 901                  * in reclaim. Leave it for the reclaim code to flush.
 902                  */
 903                 if (!igrab(VFS_I(ip))) {
 904                         read_unlock(&pag->pag_ici_lock);
 905                         continue;
 906                 }
 907                 read_unlock(&pag->pag_ici_lock);
 908
 909                 /* avoid new inodes though we shouldn't find any here */
 910                 if (xfs_iflags_test(ip, XFS_INEW)) {
 911                         IRELE(ip);
 912                         continue;
 913                 }
 914
 915                 xfs_ilock(ip, XFS_ILOCK_EXCL);
 916                 if ((flags & XFS_UQUOTA_ACCT) && ip->i_udquot) {
 917                         xfs_qm_dqrele(ip->i_udquot);
 918                         ip->i_udquot = NULL;
 919                 }
 920                 if (flags & (XFS_PQUOTA_ACCT|XFS_GQUOTA_ACCT) &&
 921                     ip->i_gdquot) {
 922                         xfs_qm_dqrele(ip->i_gdquot);
 923                         ip->i_gdquot = NULL;
 924                 }
 925                 xfs_iput(ip, XFS_ILOCK_EXCL);
 926
 927         } while (nr_found);
 928 }
 929
 930 /*
 931  * Go thru all the inodes in the file system, releasing their dquots.
 932  * Note that the mount structure gets modified to indicate that quotas are off
 933  * AFTER this, in the case of quotaoff. This also gets called from
 934  * xfs_rootumount.
 935  */
 936 void
 937 xfs_qm_dqrele_all_inodes(
 938         struct xfs_mount *mp,
 939         uint             flags)
 940 {
 941         int             i;
 942
 943         ASSERT(mp->m_quotainfo);
 944         for (i = 0; i < mp->m_sb.sb_agcount; i++) {
 945                 if (!mp->m_perag[i].pag_ici_init)
 946                         continue;
 947                 xfs_qm_dqrele_inodes_ag(mp, i, flags);
 948         }
 949 }
 950
 951 /*------------------------------------------------------------------------*/
 952 #ifdef DEBUG
 953 /*
 954  * This contains all the test functions for XFS disk quotas.
 955  * Currently it does a quota accounting check. ie. it walks through
 956  * all inodes in the file system, calculating the dquot accounting fields,
 957  * and prints out any inconsistencies.
 958  */
 959 xfs_dqhash_t *qmtest_udqtab;
 960 xfs_dqhash_t *qmtest_gdqtab;
 961 int           qmtest_hashmask;
 962 int           qmtest_nfails;
 963 struct mutex  qcheck_lock;
 964
 965 #define DQTEST_HASHVAL(mp, id) (((__psunsigned_t)(mp) + \
 966                                  (__psunsigned_t)(id)) & \
 967                                 (qmtest_hashmask - 1))
 968
 969 #define DQTEST_HASH(mp, id, type)   ((type & XFS_DQ_USER) ? \
 970                                      (qmtest_udqtab + \
 971                                       DQTEST_HASHVAL(mp, id)) : \
 972                                      (qmtest_gdqtab + \
 973                                       DQTEST_HASHVAL(mp, id)))
 974
 975 #define DQTEST_LIST_PRINT(l, NXT, title) \
 976 { \
 977           xfs_dqtest_t  *dqp; int i = 0;\
 978           cmn_err(CE_DEBUG, "%s (#%d)", title, (int) (l)->qh_nelems); \
 979           for (dqp = (xfs_dqtest_t *)(l)->qh_next; dqp != NULL; \
 980                dqp = (xfs_dqtest_t *)dqp->NXT) { \
 981                 cmn_err(CE_DEBUG, "  %d. \"%d (%s)\"  bcnt = %d, icnt = %d", \
 982                          ++i, dqp->d_id, DQFLAGTO_TYPESTR(dqp),      \
 983                          dqp->d_bcount, dqp->d_icount); } \
 984 }
 985
 986 typedef struct dqtest {
 987         xfs_dqmarker_t  q_lists;
 988         xfs_dqhash_t    *q_hash;        /* the hashchain header */
 989         xfs_mount_t     *q_mount;       /* filesystem this relates to */
 990         xfs_dqid_t      d_id;           /* user id or group id */
 991         xfs_qcnt_t      d_bcount;       /* # disk blocks owned by the user */
 992         xfs_qcnt_t      d_icount;       /* # inodes owned by the user */
 993 } xfs_dqtest_t;
 994
 995 STATIC void
 996 xfs_qm_hashinsert(xfs_dqhash_t *h, xfs_dqtest_t *dqp)
 997 {
 998         xfs_dquot_t *d;
 999         if (((d) = (h)->qh_next))
1000                 (d)->HL_PREVP = &((dqp)->HL_NEXT);
1001         (dqp)->HL_NEXT = d;
1002         (dqp)->HL_PREVP = &((h)->qh_next);
1003         (h)->qh_next = (xfs_dquot_t *)dqp;
1004         (h)->qh_version++;
1005         (h)->qh_nelems++;
1006 }
1007 STATIC void
1008 xfs_qm_dqtest_print(
1009         xfs_dqtest_t    *d)
1010 {
1011         cmn_err(CE_DEBUG, "-----------DQTEST DQUOT----------------");
1012         cmn_err(CE_DEBUG, "---- dquot ID = %d", d->d_id);
1013         cmn_err(CE_DEBUG, "---- fs       = 0x%p", d->q_mount);
1014         cmn_err(CE_DEBUG, "---- bcount   = %Lu (0x%x)",
1015                 d->d_bcount, (int)d->d_bcount);
1016         cmn_err(CE_DEBUG, "---- icount   = %Lu (0x%x)",
1017                 d->d_icount, (int)d->d_icount);
1018         cmn_err(CE_DEBUG, "---------------------------");
1019 }
1020
1021 STATIC void
1022 xfs_qm_dqtest_failed(
1023         xfs_dqtest_t    *d,
1024         xfs_dquot_t     *dqp,
1025         char            *reason,
1026         xfs_qcnt_t      a,
1027         xfs_qcnt_t      b,
1028         int             error)
1029 {
1030         qmtest_nfails++;
1031         if (error)
1032                 cmn_err(CE_DEBUG, "quotacheck failed id=%d, err=%d\nreason: %s",
1033                        d->d_id, error, reason);
1034         else
1035                 cmn_err(CE_DEBUG, "quotacheck failed id=%d (%s) [%d != %d]",
1036                        d->d_id, reason, (int)a, (int)b);
1037         xfs_qm_dqtest_print(d);
1038         if (dqp)
1039                 xfs_qm_dqprint(dqp);
1040 }
1041
1042 STATIC int
1043 xfs_dqtest_cmp2(
1044         xfs_dqtest_t    *d,
1045         xfs_dquot_t     *dqp)
1046 {
1047         int err = 0;
1048         if (be64_to_cpu(dqp->q_core.d_icount) != d->d_icount) {
1049                 xfs_qm_dqtest_failed(d, dqp, "icount mismatch",
1050                         be64_to_cpu(dqp->q_core.d_icount),
1051                         d->d_icount, 0);
1052                 err++;
1053         }
1054         if (be64_to_cpu(dqp->q_core.d_bcount) != d->d_bcount) {
1055                 xfs_qm_dqtest_failed(d, dqp, "bcount mismatch",
1056                         be64_to_cpu(dqp->q_core.d_bcount),
1057                         d->d_bcount, 0);
1058                 err++;
1059         }
1060         if (dqp->q_core.d_blk_softlimit &&
1061             be64_to_cpu(dqp->q_core.d_bcount) >=
1062             be64_to_cpu(dqp->q_core.d_blk_softlimit)) {
1063                 if (!dqp->q_core.d_btimer && dqp->q_core.d_id) {
1064                         cmn_err(CE_DEBUG,
1065                                 "%d [%s] [0x%p] BLK TIMER NOT STARTED",
1066                                 d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
1067                         err++;
1068                 }
1069         }
1070         if (dqp->q_core.d_ino_softlimit &&
1071             be64_to_cpu(dqp->q_core.d_icount) >=
1072             be64_to_cpu(dqp->q_core.d_ino_softlimit)) {
1073                 if (!dqp->q_core.d_itimer && dqp->q_core.d_id) {
1074                         cmn_err(CE_DEBUG,
1075                                 "%d [%s] [0x%p] INO TIMER NOT STARTED",
1076                                 d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
1077                         err++;
1078                 }
1079         }
1080 #ifdef QUOTADEBUG
1081         if (!err) {
1082                 cmn_err(CE_DEBUG, "%d [%s] [0x%p] qchecked",
1083                         d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
1084         }
1085 #endif
1086         return (err);
1087 }
1088
1089 STATIC void
1090 xfs_dqtest_cmp(
1091         xfs_dqtest_t    *d)
1092 {
1093         xfs_dquot_t     *dqp;
1094         int             error;
1095
1096         /* xfs_qm_dqtest_print(d); */
1097         if ((error = xfs_qm_dqget(d->q_mount, NULL, d->d_id, d->dq_flags, 0,
1098                                  &dqp))) {
1099                 xfs_qm_dqtest_failed(d, NULL, "dqget failed", 0, 0, error);
1100                 return;
1101         }
1102         xfs_dqtest_cmp2(d, dqp);
1103         xfs_qm_dqput(dqp);
1104 }
1105
1106 STATIC int
1107 xfs_qm_internalqcheck_dqget(
1108         xfs_mount_t     *mp,
1109         xfs_dqid_t      id,
1110         uint            type,
1111         xfs_dqtest_t    **O_dq)
1112 {
1113         xfs_dqtest_t    *d;
1114         xfs_dqhash_t    *h;
1115
1116         h = DQTEST_HASH(mp, id, type);
1117         for (d = (xfs_dqtest_t *) h->qh_next; d != NULL;
1118              d = (xfs_dqtest_t *) d->HL_NEXT) {
1119                 /* DQTEST_LIST_PRINT(h, HL_NEXT, "@@@@@ dqtestlist @@@@@"); */
1120                 if (d->d_id == id && mp == d->q_mount) {
1121                         *O_dq = d;
1122                         return (0);
1123                 }
1124         }
1125         d = kmem_zalloc(sizeof(xfs_dqtest_t), KM_SLEEP);
1126         d->dq_flags = type;
1127         d->d_id = id;
1128         d->q_mount = mp;
1129         d->q_hash = h;
1130         xfs_qm_hashinsert(h, d);
1131         *O_dq = d;
1132         return (0);
1133 }
1134
1135 STATIC void
1136 xfs_qm_internalqcheck_get_dquots(
1137         xfs_mount_t     *mp,
1138         xfs_dqid_t      uid,
1139         xfs_dqid_t      projid,
1140         xfs_dqid_t      gid,
1141         xfs_dqtest_t    **ud,
1142         xfs_dqtest_t    **gd)
1143 {
1144         if (XFS_IS_UQUOTA_ON(mp))
1145                 xfs_qm_internalqcheck_dqget(mp, uid, XFS_DQ_USER, ud);
1146         if (XFS_IS_GQUOTA_ON(mp))
1147                 xfs_qm_internalqcheck_dqget(mp, gid, XFS_DQ_GROUP, gd);
1148         else if (XFS_IS_PQUOTA_ON(mp))
1149                 xfs_qm_internalqcheck_dqget(mp, projid, XFS_DQ_PROJ, gd);
1150 }
1151
1152
1153 STATIC void
1154 xfs_qm_internalqcheck_dqadjust(
1155         xfs_inode_t             *ip,
1156         xfs_dqtest_t            *d)
1157 {
1158         d->d_icount++;
1159         d->d_bcount += (xfs_qcnt_t)ip->i_d.di_nblocks;
1160 }
1161
1162 STATIC int
1163 xfs_qm_internalqcheck_adjust(
1164         xfs_mount_t     *mp,            /* mount point for filesystem */
1165         xfs_ino_t       ino,            /* inode number to get data for */
1166         void            __user *buffer, /* not used */
1167         int             ubsize,         /* not used */
1168         void            *private_data,  /* not used */
1169         xfs_daddr_t     bno,            /* starting block of inode cluster */
1170         int             *ubused,        /* not used */
1171         void            *dip,           /* not used */
1172         int             *res)           /* bulkstat result code */
1173 {
1174         xfs_inode_t             *ip;
1175         xfs_dqtest_t            *ud, *gd;
1176         uint                    lock_flags;
1177         boolean_t               ipreleased;
1178         int                     error;
1179
1180         ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1181
1182         if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) {
1183                 *res = BULKSTAT_RV_NOTHING;
1184                 qdprintk("internalqcheck: ino=%llu, uqino=%llu, gqino=%llu\n",
1185                         (unsigned long long) ino,
1186                         (unsigned long long) mp->m_sb.sb_uquotino,
1187                         (unsigned long long) mp->m_sb.sb_gquotino);
1188                 return XFS_ERROR(EINVAL);
1189         }
1190         ipreleased = B_FALSE;
1191  again:
1192         lock_flags = XFS_ILOCK_SHARED;
1193         if ((error = xfs_iget(mp, NULL, ino, 0, lock_flags, &ip, bno))) {
1194                 *res = BULKSTAT_RV_NOTHING;
1195                 return (error);
1196         }
1197
1198         /*
1199          * This inode can have blocks after eof which can get released
1200          * when we send it to inactive. Since we don't check the dquot
1201          * until the after all our calculations are done, we must get rid
1202          * of those now.
1203          */
1204         if (! ipreleased) {
1205                 xfs_iput(ip, lock_flags);
1206                 ipreleased = B_TRUE;
1207                 goto again;
1208         }
1209         xfs_qm_internalqcheck_get_dquots(mp,
1210                                         (xfs_dqid_t) ip->i_d.di_uid,
1211                                         (xfs_dqid_t) ip->i_d.di_projid,
1212                                         (xfs_dqid_t) ip->i_d.di_gid,
1213                                         &ud, &gd);
1214         if (XFS_IS_UQUOTA_ON(mp)) {
1215                 ASSERT(ud);
1216                 xfs_qm_internalqcheck_dqadjust(ip, ud);
1217         }
1218         if (XFS_IS_OQUOTA_ON(mp)) {
1219                 ASSERT(gd);
1220                 xfs_qm_internalqcheck_dqadjust(ip, gd);
1221         }
1222         xfs_iput(ip, lock_flags);
1223         *res = BULKSTAT_RV_DIDONE;
1224         return (0);
1225 }
1226
1227
1228 /* PRIVATE, debugging */
1229 int
1230 xfs_qm_internalqcheck(
1231         xfs_mount_t     *mp)
1232 {
1233         xfs_ino_t       lastino;
1234         int             done, count;
1235         int             i;
1236         xfs_dqtest_t    *d, *e;
1237         xfs_dqhash_t    *h1;
1238         int             error;
1239
1240         lastino = 0;
1241         qmtest_hashmask = 32;
1242         count = 5;
1243         done = 0;
1244         qmtest_nfails = 0;
1245
1246         if (! XFS_IS_QUOTA_ON(mp))
1247                 return XFS_ERROR(ESRCH);
1248
1249         xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC);
1250         XFS_bflush(mp->m_ddev_targp);
1251         xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC);
1252         XFS_bflush(mp->m_ddev_targp);
1253
1254         mutex_lock(&qcheck_lock);
1255         /* There should be absolutely no quota activity while this
1256            is going on. */
1257         qmtest_udqtab = kmem_zalloc(qmtest_hashmask *
1258                                     sizeof(xfs_dqhash_t), KM_SLEEP);
1259         qmtest_gdqtab = kmem_zalloc(qmtest_hashmask *
1260                                     sizeof(xfs_dqhash_t), KM_SLEEP);
1261         do {
1262                 /*
1263                  * Iterate thru all the inodes in the file system,
1264                  * adjusting the corresponding dquot counters
1265                  */
1266                 if ((error = xfs_bulkstat(mp, &lastino, &count,
1267                                  xfs_qm_internalqcheck_adjust, NULL,
1268                                  0, NULL, BULKSTAT_FG_IGET, &done))) {
1269                         break;
1270                 }
1271         } while (! done);
1272         if (error) {
1273                 cmn_err(CE_DEBUG, "Bulkstat returned error 0x%x", error);
1274         }
1275         cmn_err(CE_DEBUG, "Checking results against system dquots");
1276         for (i = 0; i < qmtest_hashmask; i++) {
1277                 h1 = &qmtest_udqtab[i];
1278                 for (d = (xfs_dqtest_t *) h1->qh_next; d != NULL; ) {
1279                         xfs_dqtest_cmp(d);
1280                         e = (xfs_dqtest_t *) d->HL_NEXT;
1281                         kmem_free(d);
1282                         d = e;
1283                 }
1284                 h1 = &qmtest_gdqtab[i];
1285                 for (d = (xfs_dqtest_t *) h1->qh_next; d != NULL; ) {
1286                         xfs_dqtest_cmp(d);
1287                         e = (xfs_dqtest_t *) d->HL_NEXT;
1288                         kmem_free(d);
1289                         d = e;
1290                 }
1291         }
1292
1293         if (qmtest_nfails) {
1294                 cmn_err(CE_DEBUG, "******** quotacheck failed  ********");
1295                 cmn_err(CE_DEBUG, "failures = %d", qmtest_nfails);
1296         } else {
1297                 cmn_err(CE_DEBUG, "******** quotacheck successful! ********");
1298         }
1299         kmem_free(qmtest_udqtab);
1300         kmem_free(qmtest_gdqtab);
1301         mutex_unlock(&qcheck_lock);
1302         return (qmtest_nfails);
1303 }
1304
1305 #endif /* DEBUG */