/* * Copyright (c) 2000-2005 Silicon Graphics, Inc. * All Rights Reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it would be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include "xfs.h" #include "xfs_fs.h" #include "xfs_bit.h" #include "xfs_log.h" #include "xfs_inum.h" #include "xfs_trans.h" #include "xfs_sb.h" #include "xfs_ag.h" #include "xfs_alloc.h" #include "xfs_quota.h" #include "xfs_mount.h" #include "xfs_bmap_btree.h" #include "xfs_inode.h" #include "xfs_itable.h" #include "xfs_bmap.h" #include "xfs_rtalloc.h" #include "xfs_error.h" #include "xfs_attr.h" #include "xfs_buf_item.h" #include "xfs_utils.h" #include "xfs_qm.h" #include "xfs_trace.h" STATIC int xfs_qm_log_quotaoff(xfs_mount_t *, xfs_qoff_logitem_t **, uint); STATIC int xfs_qm_log_quotaoff_end(xfs_mount_t *, xfs_qoff_logitem_t *, uint); STATIC uint xfs_qm_export_flags(uint); STATIC uint xfs_qm_export_qtype_flags(uint); STATIC void xfs_qm_export_dquot(xfs_mount_t *, xfs_disk_dquot_t *, fs_disk_quota_t *); /* * Turn off quota accounting and/or enforcement for all udquots and/or * gdquots. Called only at unmount time. * * This assumes that there are no dquots of this file system cached * incore, and modifies the ondisk dquot directly. Therefore, for example, * it is an error to call this twice, without purging the cache. */ int xfs_qm_scall_quotaoff( xfs_mount_t *mp, uint flags) { struct xfs_quotainfo *q = mp->m_quotainfo; uint dqtype; int error; uint inactivate_flags; xfs_qoff_logitem_t *qoffstart; int nculprits; /* * No file system can have quotas enabled on disk but not in core. * Note that quota utilities (like quotaoff) _expect_ * errno == EEXIST here. */ if ((mp->m_qflags & flags) == 0) return XFS_ERROR(EEXIST); error = 0; flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD); /* * We don't want to deal with two quotaoffs messing up each other, * so we're going to serialize it. quotaoff isn't exactly a performance * critical thing. * If quotaoff, then we must be dealing with the root filesystem. */ ASSERT(q); mutex_lock(&q->qi_quotaofflock); /* * If we're just turning off quota enforcement, change mp and go. */ if ((flags & XFS_ALL_QUOTA_ACCT) == 0) { mp->m_qflags &= ~(flags); spin_lock(&mp->m_sb_lock); mp->m_sb.sb_qflags = mp->m_qflags; spin_unlock(&mp->m_sb_lock); mutex_unlock(&q->qi_quotaofflock); /* XXX what to do if error ? Revert back to old vals incore ? */ error = xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS); return (error); } dqtype = 0; inactivate_flags = 0; /* * If accounting is off, we must turn enforcement off, clear the * quota 'CHKD' certificate to make it known that we have to * do a quotacheck the next time this quota is turned on. */ if (flags & XFS_UQUOTA_ACCT) { dqtype |= XFS_QMOPT_UQUOTA; flags |= (XFS_UQUOTA_CHKD | XFS_UQUOTA_ENFD); inactivate_flags |= XFS_UQUOTA_ACTIVE; } if (flags & XFS_GQUOTA_ACCT) { dqtype |= XFS_QMOPT_GQUOTA; flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_ENFD); inactivate_flags |= XFS_GQUOTA_ACTIVE; } else if (flags & XFS_PQUOTA_ACCT) { dqtype |= XFS_QMOPT_PQUOTA; flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_ENFD); inactivate_flags |= XFS_PQUOTA_ACTIVE; } /* * Nothing to do? Don't complain. This happens when we're just * turning off quota enforcement. */ if ((mp->m_qflags & flags) == 0) goto out_unlock; /* * Write the LI_QUOTAOFF log record, and do SB changes atomically, * and synchronously. If we fail to write, we should abort the * operation as it cannot be recovered safely if we crash. */ error = xfs_qm_log_quotaoff(mp, &qoffstart, flags); if (error) goto out_unlock; /* * Next we clear the XFS_MOUNT_*DQ_ACTIVE bit(s) in the mount struct * to take care of the race between dqget and quotaoff. We don't take * any special locks to reset these bits. All processes need to check * these bits *after* taking inode lock(s) to see if the particular * quota type is in the process of being turned off. If *ACTIVE, it is * guaranteed that all dquot structures and all quotainode ptrs will all * stay valid as long as that inode is kept locked. * * There is no turning back after this. */ mp->m_qflags &= ~inactivate_flags; /* * Give back all the dquot reference(s) held by inodes. * Here we go thru every single incore inode in this file system, and * do a dqrele on the i_udquot/i_gdquot that it may have. * Essentially, as long as somebody has an inode locked, this guarantees * that quotas will not be turned off. This is handy because in a * transaction once we lock the inode(s) and check for quotaon, we can * depend on the quota inodes (and other things) being valid as long as * we keep the lock(s). */ xfs_qm_dqrele_all_inodes(mp, flags); /* * Next we make the changes in the quota flag in the mount struct. * This isn't protected by a particular lock directly, because we * don't want to take a mrlock everytime we depend on quotas being on. */ mp->m_qflags &= ~(flags); /* * Go through all the dquots of this file system and purge them, * according to what was turned off. We may not be able to get rid * of all dquots, because dquots can have temporary references that * are not attached to inodes. eg. xfs_setattr, xfs_create. * So, if we couldn't purge all the dquots from the filesystem, * we can't get rid of the incore data structures. */ while ((nculprits = xfs_qm_dqpurge_all(mp, dqtype))) delay(10 * nculprits); /* * Transactions that had started before ACTIVE state bit was cleared * could have logged many dquots, so they'd have higher LSNs than * the first QUOTAOFF log record does. If we happen to crash when * the tail of the log has gone past the QUOTAOFF record, but * before the last dquot modification, those dquots __will__ * recover, and that's not good. * * So, we have QUOTAOFF start and end logitems; the start * logitem won't get overwritten until the end logitem appears... */ error = xfs_qm_log_quotaoff_end(mp, qoffstart, flags); if (error) { /* We're screwed now. Shutdown is the only option. */ xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); goto out_unlock; } /* * If quotas is completely disabled, close shop. */ if (((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET1) || ((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET2)) { mutex_unlock(&q->qi_quotaofflock); xfs_qm_destroy_quotainfo(mp); return (0); } /* * Release our quotainode references if we don't need them anymore. */ if ((dqtype & XFS_QMOPT_UQUOTA) && q->qi_uquotaip) { IRELE(q->qi_uquotaip); q->qi_uquotaip = NULL; } if ((dqtype & (XFS_QMOPT_GQUOTA|XFS_QMOPT_PQUOTA)) && q->qi_gquotaip) { IRELE(q->qi_gquotaip); q->qi_gquotaip = NULL; } out_unlock: mutex_unlock(&q->qi_quotaofflock); return error; } STATIC int xfs_qm_scall_trunc_qfile( struct xfs_mount *mp, xfs_ino_t ino) { struct xfs_inode *ip; struct xfs_trans *tp; int error; if (ino == NULLFSINO) return 0; error = xfs_iget(mp, NULL, ino, 0, 0, &ip); if (error) return error; xfs_ilock(ip, XFS_IOLOCK_EXCL); tp = xfs_trans_alloc(mp, XFS_TRANS_TRUNCATE_FILE); error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0, XFS_TRANS_PERM_LOG_RES, XFS_ITRUNCATE_LOG_COUNT); if (error) { xfs_trans_cancel(tp, 0); xfs_iunlock(ip, XFS_IOLOCK_EXCL); goto out_put; } xfs_ilock(ip, XFS_ILOCK_EXCL); xfs_trans_ijoin(tp, ip); error = xfs_itruncate_finish(&tp, ip, 0, XFS_DATA_FORK, 1); if (error) { xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | XFS_TRANS_ABORT); goto out_unlock; } xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); out_unlock: xfs_iunlock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL); out_put: IRELE(ip); return error; } int xfs_qm_scall_trunc_qfiles( xfs_mount_t *mp, uint flags) { int error = 0, error2 = 0; if (!xfs_sb_version_hasquota(&mp->m_sb) || flags == 0) { xfs_debug(mp, "%s: flags=%x m_qflags=%x\n", __func__, flags, mp->m_qflags); return XFS_ERROR(EINVAL); } if (flags & XFS_DQ_USER) error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_uquotino); if (flags & (XFS_DQ_GROUP|XFS_DQ_PROJ)) error2 = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_gquotino); return error ? error : error2; } /* * Switch on (a given) quota enforcement for a filesystem. This takes * effect immediately. * (Switching on quota accounting must be done at mount time.) */ int xfs_qm_scall_quotaon( xfs_mount_t *mp, uint flags) { int error; uint qf; uint accflags; __int64_t sbflags; flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD); /* * Switching on quota accounting must be done at mount time. */ accflags = flags & XFS_ALL_QUOTA_ACCT; flags &= ~(XFS_ALL_QUOTA_ACCT); sbflags = 0; if (flags == 0) { xfs_debug(mp, "%s: zero flags, m_qflags=%x\n", __func__, mp->m_qflags); return XFS_ERROR(EINVAL); } /* No fs can turn on quotas with a delayed effect */ ASSERT((flags & XFS_ALL_QUOTA_ACCT) == 0); /* * Can't enforce without accounting. We check the superblock * qflags here instead of m_qflags because rootfs can have * quota acct on ondisk without m_qflags' knowing. */ if (((flags & XFS_UQUOTA_ACCT) == 0 && (mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) == 0 && (flags & XFS_UQUOTA_ENFD)) || ((flags & XFS_PQUOTA_ACCT) == 0 && (mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) == 0 && (flags & XFS_GQUOTA_ACCT) == 0 && (mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) == 0 && (flags & XFS_OQUOTA_ENFD))) { xfs_debug(mp, "%s: Can't enforce without acct, flags=%x sbflags=%x\n", __func__, flags, mp->m_sb.sb_qflags); return XFS_ERROR(EINVAL); } /* * If everything's upto-date incore, then don't waste time. */ if ((mp->m_qflags & flags) == flags) return XFS_ERROR(EEXIST); /* * Change sb_qflags on disk but not incore mp->qflags * if this is the root filesystem. */ spin_lock(&mp->m_sb_lock); qf = mp->m_sb.sb_qflags; mp->m_sb.sb_qflags = qf | flags; spin_unlock(&mp->m_sb_lock); /* * There's nothing to change if it's the same. */ if ((qf & flags) == flags && sbflags == 0) return XFS_ERROR(EEXIST); sbflags |= XFS_SB_QFLAGS; if ((error = xfs_qm_write_sb_changes(mp, sbflags))) return (error); /* * If we aren't trying to switch on quota enforcement, we are done. */ if (((mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) != (mp->m_qflags & XFS_UQUOTA_ACCT)) || ((mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) != (mp->m_qflags & XFS_PQUOTA_ACCT)) || ((mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) != (mp->m_qflags & XFS_GQUOTA_ACCT)) || (flags & XFS_ALL_QUOTA_ENFD) == 0) return (0); if (! XFS_IS_QUOTA_RUNNING(mp)) return XFS_ERROR(ESRCH); /* * Switch on quota enforcement in core. */ mutex_lock(&mp->m_quotainfo->qi_quotaofflock); mp->m_qflags |= (flags & XFS_ALL_QUOTA_ENFD); mutex_unlock(&mp->m_quotainfo->qi_quotaofflock); return (0); } /* * Return quota status information, such as uquota-off, enforcements, etc. */ int xfs_qm_scall_getqstat( struct xfs_mount *mp, struct fs_quota_stat *out) { struct xfs_quotainfo *q = mp->m_quotainfo; struct xfs_inode *uip, *gip; boolean_t tempuqip, tempgqip; uip = gip = NULL; tempuqip = tempgqip = B_FALSE; memset(out, 0, sizeof(fs_quota_stat_t)); out->qs_version = FS_QSTAT_VERSION; if (!xfs_sb_version_hasquota(&mp->m_sb)) { out->qs_uquota.qfs_ino = NULLFSINO; out->qs_gquota.qfs_ino = NULLFSINO; return (0); } out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags & (XFS_ALL_QUOTA_ACCT| XFS_ALL_QUOTA_ENFD)); out->qs_pad = 0; out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino; out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino; if (q) { uip = q->qi_uquotaip; gip = q->qi_gquotaip; } if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) { if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, 0, 0, &uip) == 0) tempuqip = B_TRUE; } if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) { if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, 0, 0, &gip) == 0) tempgqip = B_TRUE; } if (uip) { out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks; out->qs_uquota.qfs_nextents = uip->i_d.di_nextents; if (tempuqip) IRELE(uip); } if (gip) { out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks; out->qs_gquota.qfs_nextents = gip->i_d.di_nextents; if (tempgqip) IRELE(gip); } if (q) { out->qs_incoredqs = q->qi_dquots; out->qs_btimelimit = q->qi_btimelimit; out->qs_itimelimit = q->qi_itimelimit; out->qs_rtbtimelimit = q->qi_rtbtimelimit; out->qs_bwarnlimit = q->qi_bwarnlimit; out->qs_iwarnlimit = q->qi_iwarnlimit; } return 0; } #define XFS_DQ_MASK \ (FS_DQ_LIMIT_MASK | FS_DQ_TIMER_MASK | FS_DQ_WARNS_MASK) /* * Adjust quota limits, and start/stop timers accordingly. */ int xfs_qm_scall_setqlim( xfs_mount_t *mp, xfs_dqid_t id, uint type, fs_disk_quota_t *newlim) { struct xfs_quotainfo *q = mp->m_quotainfo; xfs_disk_dquot_t *ddq; xfs_dquot_t *dqp; xfs_trans_t *tp; int error; xfs_qcnt_t hard, soft; if (newlim->d_fieldmask & ~XFS_DQ_MASK) return EINVAL; if ((newlim->d_fieldmask & XFS_DQ_MASK) == 0) return 0; tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SETQLIM); if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_disk_dquot_t) + 128, 0, 0, XFS_DEFAULT_LOG_COUNT))) { xfs_trans_cancel(tp, 0); return (error); } /* * We don't want to race with a quotaoff so take the quotaoff lock. * (We don't hold an inode lock, so there's nothing else to stop * a quotaoff from happening). (XXXThis doesn't currently happen * because we take the vfslock before calling xfs_qm_sysent). */ mutex_lock(&q->qi_quotaofflock); /* * Get the dquot (locked), and join it to the transaction. * Allocate the dquot if this doesn't exist. */ if ((error = xfs_qm_dqget(mp, NULL, id, type, XFS_QMOPT_DQALLOC, &dqp))) { xfs_trans_cancel(tp, XFS_TRANS_ABORT); ASSERT(error != ENOENT); goto out_unlock; } xfs_trans_dqjoin(tp, dqp); ddq = &dqp->q_core; /* * Make sure that hardlimits are >= soft limits before changing. */ hard = (newlim->d_fieldmask & FS_DQ_BHARD) ? (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_hardlimit) : be64_to_cpu(ddq->d_blk_hardlimit); soft = (newlim->d_fieldmask & FS_DQ_BSOFT) ? (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_softlimit) : be64_to_cpu(ddq->d_blk_softlimit); if (hard == 0 || hard >= soft) { ddq->d_blk_hardlimit = cpu_to_be64(hard); ddq->d_blk_softlimit = cpu_to_be64(soft); if (id == 0) { q->qi_bhardlimit = hard; q->qi_bsoftlimit = soft; } } else { xfs_debug(mp, "blkhard %Ld < blksoft %Ld\n", hard, soft); } hard = (newlim->d_fieldmask & FS_DQ_RTBHARD) ? (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_hardlimit) : be64_to_cpu(ddq->d_rtb_hardlimit); soft = (newlim->d_fieldmask & FS_DQ_RTBSOFT) ? (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_softlimit) : be64_to_cpu(ddq->d_rtb_softlimit); if (hard == 0 || hard >= soft) { ddq->d_rtb_hardlimit = cpu_to_be64(hard); ddq->d_rtb_softlimit = cpu_to_be64(soft); if (id == 0) { q->qi_rtbhardlimit = hard; q->qi_rtbsoftlimit = soft; } } else { xfs_debug(mp, "rtbhard %Ld < rtbsoft %Ld\n", hard, soft); } hard = (newlim->d_fieldmask & FS_DQ_IHARD) ? (xfs_qcnt_t) newlim->d_ino_hardlimit : be64_to_cpu(ddq->d_ino_hardlimit); soft = (newlim->d_fieldmask & FS_DQ_ISOFT) ? (xfs_qcnt_t) newlim->d_ino_softlimit : be64_to_cpu(ddq->d_ino_softlimit); if (hard == 0 || hard >= soft) { ddq->d_ino_hardlimit = cpu_to_be64(hard); ddq->d_ino_softlimit = cpu_to_be64(soft); if (id == 0) { q->qi_ihardlimit = hard; q->qi_isoftlimit = soft; } } else { xfs_debug(mp, "ihard %Ld < isoft %Ld\n", hard, soft); } /* * Update warnings counter(s) if requested */ if (newlim->d_fieldmask & FS_DQ_BWARNS) ddq->d_bwarns = cpu_to_be16(newlim->d_bwarns); if (newlim->d_fieldmask & FS_DQ_IWARNS) ddq->d_iwarns = cpu_to_be16(newlim->d_iwarns); if (newlim->d_fieldmask & FS_DQ_RTBWARNS) ddq->d_rtbwarns = cpu_to_be16(newlim->d_rtbwarns); if (id == 0) { /* * Timelimits for the super user set the relative time * the other users can be over quota for this file system. * If it is zero a default is used. Ditto for the default * soft and hard limit values (already done, above), and * for warnings. */ if (newlim->d_fieldmask & FS_DQ_BTIMER) { q->qi_btimelimit = newlim->d_btimer; ddq->d_btimer = cpu_to_be32(newlim->d_btimer); } if (newlim->d_fieldmask & FS_DQ_ITIMER) { q->qi_itimelimit = newlim->d_itimer; ddq->d_itimer = cpu_to_be32(newlim->d_itimer); } if (newlim->d_fieldmask & FS_DQ_RTBTIMER) { q->qi_rtbtimelimit = newlim->d_rtbtimer; ddq->d_rtbtimer = cpu_to_be32(newlim->d_rtbtimer); } if (newlim->d_fieldmask & FS_DQ_BWARNS) q->qi_bwarnlimit = newlim->d_bwarns; if (newlim->d_fieldmask & FS_DQ_IWARNS) q->qi_iwarnlimit = newlim->d_iwarns; if (newlim->d_fieldmask & FS_DQ_RTBWARNS) q->qi_rtbwarnlimit = newlim->d_rtbwarns; } else { /* * If the user is now over quota, start the timelimit. * The user will not be 'warned'. * Note that we keep the timers ticking, whether enforcement * is on or off. We don't really want to bother with iterating * over all ondisk dquots and turning the timers on/off. */ xfs_qm_adjust_dqtimers(mp, ddq); } dqp->dq_flags |= XFS_DQ_DIRTY; xfs_trans_log_dquot(tp, dqp); error = xfs_trans_commit(tp, 0); xfs_qm_dqprint(dqp); xfs_qm_dqrele(dqp); out_unlock: mutex_unlock(&q->qi_quotaofflock); return error; } int xfs_qm_scall_getquota( xfs_mount_t *mp, xfs_dqid_t id, uint type, fs_disk_quota_t *out) { xfs_dquot_t *dqp; int error; /* * Try to get the dquot. We don't want it allocated on disk, so * we aren't passing the XFS_QMOPT_DOALLOC flag. If it doesn't * exist, we'll get ENOENT back. */ if ((error = xfs_qm_dqget(mp, NULL, id, type, 0, &dqp))) { return (error); } /* * If everything's NULL, this dquot doesn't quite exist as far as * our utility programs are concerned. */ if (XFS_IS_DQUOT_UNINITIALIZED(dqp)) { xfs_qm_dqput(dqp); return XFS_ERROR(ENOENT); } /* xfs_qm_dqprint(dqp); */ /* * Convert the disk dquot to the exportable format */ xfs_qm_export_dquot(mp, &dqp->q_core, out); xfs_qm_dqput(dqp); return (error ? XFS_ERROR(EFAULT) : 0); } STATIC int xfs_qm_log_quotaoff_end( xfs_mount_t *mp, xfs_qoff_logitem_t *startqoff, uint flags) { xfs_trans_t *tp; int error; xfs_qoff_logitem_t *qoffi; tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF_END); if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_qoff_logitem_t) * 2, 0, 0, XFS_DEFAULT_LOG_COUNT))) { xfs_trans_cancel(tp, 0); return (error); } qoffi = xfs_trans_get_qoff_item(tp, startqoff, flags & XFS_ALL_QUOTA_ACCT); xfs_trans_log_quotaoff_item(tp, qoffi); /* * We have to make sure that the transaction is secure on disk before we * return and actually stop quota accounting. So, make it synchronous. * We don't care about quotoff's performance. */ xfs_trans_set_sync(tp); error = xfs_trans_commit(tp, 0); return (error); } STATIC int xfs_qm_log_quotaoff( xfs_mount_t *mp, xfs_qoff_logitem_t **qoffstartp, uint flags) { xfs_trans_t *tp; int error; xfs_qoff_logitem_t *qoffi=NULL; uint oldsbqflag=0; tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF); if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_qoff_logitem_t) * 2 + mp->m_sb.sb_sectsize + 128, 0, 0, XFS_DEFAULT_LOG_COUNT))) { goto error0; } qoffi = xfs_trans_get_qoff_item(tp, NULL, flags & XFS_ALL_QUOTA_ACCT); xfs_trans_log_quotaoff_item(tp, qoffi); spin_lock(&mp->m_sb_lock); oldsbqflag = mp->m_sb.sb_qflags; mp->m_sb.sb_qflags = (mp->m_qflags & ~(flags)) & XFS_MOUNT_QUOTA_ALL; spin_unlock(&mp->m_sb_lock); xfs_mod_sb(tp, XFS_SB_QFLAGS); /* * We have to make sure that the transaction is secure on disk before we * return and actually stop quota accounting. So, make it synchronous. * We don't care about quotoff's performance. */ xfs_trans_set_sync(tp); error = xfs_trans_commit(tp, 0); error0: if (error) { xfs_trans_cancel(tp, 0); /* * No one else is modifying sb_qflags, so this is OK. * We still hold the quotaofflock. */ spin_lock(&mp->m_sb_lock); mp->m_sb.sb_qflags = oldsbqflag; spin_unlock(&mp->m_sb_lock); } *qoffstartp = qoffi; return (error); } /* * Translate an internal style on-disk-dquot to the exportable format. * The main differences are that the counters/limits are all in Basic * Blocks (BBs) instead of the internal FSBs, and all on-disk data has * to be converted to the native endianness. */ STATIC void xfs_qm_export_dquot( xfs_mount_t *mp, xfs_disk_dquot_t *src, struct fs_disk_quota *dst) { memset(dst, 0, sizeof(*dst)); dst->d_version = FS_DQUOT_VERSION; /* different from src->d_version */ dst->d_flags = xfs_qm_export_qtype_flags(src->d_flags); dst->d_id = be32_to_cpu(src->d_id); dst->d_blk_hardlimit = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_blk_hardlimit)); dst->d_blk_softlimit = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_blk_softlimit)); dst->d_ino_hardlimit = be64_to_cpu(src->d_ino_hardlimit); dst->d_ino_softlimit = be64_to_cpu(src->d_ino_softlimit); dst->d_bcount = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_bcount)); dst->d_icount = be64_to_cpu(src->d_icount); dst->d_btimer = be32_to_cpu(src->d_btimer); dst->d_itimer = be32_to_cpu(src->d_itimer); dst->d_iwarns = be16_to_cpu(src->d_iwarns); dst->d_bwarns = be16_to_cpu(src->d_bwarns); dst->d_rtb_hardlimit = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtb_hardlimit)); dst->d_rtb_softlimit = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtb_softlimit)); dst->d_rtbcount = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtbcount)); dst->d_rtbtimer = be32_to_cpu(src->d_rtbtimer); dst->d_rtbwarns = be16_to_cpu(src->d_rtbwarns); /* * Internally, we don't reset all the timers when quota enforcement * gets turned off. No need to confuse the user level code, * so return zeroes in that case. */ if ((!XFS_IS_UQUOTA_ENFORCED(mp) && src->d_flags == XFS_DQ_USER) || (!XFS_IS_OQUOTA_ENFORCED(mp) && (src->d_flags & (XFS_DQ_PROJ | XFS_DQ_GROUP)))) { dst->d_btimer = 0; dst->d_itimer = 0; dst->d_rtbtimer = 0; } #ifdef DEBUG if (((XFS_IS_UQUOTA_ENFORCED(mp) && dst->d_flags == FS_USER_QUOTA) || (XFS_IS_OQUOTA_ENFORCED(mp) && (dst->d_flags & (FS_PROJ_QUOTA | FS_GROUP_QUOTA)))) && dst->d_id != 0) { if (((int) dst->d_bcount >= (int) dst->d_blk_softlimit) && (dst->d_blk_softlimit > 0)) { ASSERT(dst->d_btimer != 0); } if (((int) dst->d_icount >= (int) dst->d_ino_softlimit) && (dst->d_ino_softlimit > 0)) { ASSERT(dst->d_itimer != 0); } } #endif } STATIC uint xfs_qm_export_qtype_flags( uint flags) { /* * Can't be more than one, or none. */ ASSERT((flags & (FS_PROJ_QUOTA | FS_USER_QUOTA)) != (FS_PROJ_QUOTA | FS_USER_QUOTA)); ASSERT((flags & (FS_PROJ_QUOTA | FS_GROUP_QUOTA)) != (FS_PROJ_QUOTA | FS_GROUP_QUOTA)); ASSERT((flags & (FS_USER_QUOTA | FS_GROUP_QUOTA)) != (FS_USER_QUOTA | FS_GROUP_QUOTA)); ASSERT((flags & (FS_PROJ_QUOTA|FS_USER_QUOTA|FS_GROUP_QUOTA)) != 0); return (flags & XFS_DQ_USER) ? FS_USER_QUOTA : (flags & XFS_DQ_PROJ) ? FS_PROJ_QUOTA : FS_GROUP_QUOTA; } STATIC uint xfs_qm_export_flags( uint flags) { uint uflags; uflags = 0; if (flags & XFS_UQUOTA_ACCT) uflags |= FS_QUOTA_UDQ_ACCT; if (flags & XFS_PQUOTA_ACCT) uflags |= FS_QUOTA_PDQ_ACCT; if (flags & XFS_GQUOTA_ACCT) uflags |= FS_QUOTA_GDQ_ACCT; if (flags & XFS_UQUOTA_ENFD) uflags |= FS_QUOTA_UDQ_ENFD; if (flags & (XFS_OQUOTA_ENFD)) { uflags |= (flags & XFS_GQUOTA_ACCT) ? FS_QUOTA_GDQ_ENFD : FS_QUOTA_PDQ_ENFD; } return (uflags); } STATIC int xfs_dqrele_inode( struct xfs_inode *ip, struct xfs_perag *pag, int flags) { /* skip quota inodes */ if (ip == ip->i_mount->m_quotainfo->qi_uquotaip || ip == ip->i_mount->m_quotainfo->qi_gquotaip) { ASSERT(ip->i_udquot == NULL); ASSERT(ip->i_gdquot == NULL); return 0; } xfs_ilock(ip, XFS_ILOCK_EXCL); if ((flags & XFS_UQUOTA_ACCT) && ip->i_udquot) { xfs_qm_dqrele(ip->i_udquot); ip->i_udquot = NULL; } if (flags & (XFS_PQUOTA_ACCT|XFS_GQUOTA_ACCT) && ip->i_gdquot) { xfs_qm_dqrele(ip->i_gdquot); ip->i_gdquot = NULL; } xfs_iunlock(ip, XFS_ILOCK_EXCL); return 0; } /* * Go thru all the inodes in the file system, releasing their dquots. * * Note that the mount structure gets modified to indicate that quotas are off * AFTER this, in the case of quotaoff. */ void xfs_qm_dqrele_all_inodes( struct xfs_mount *mp, uint flags) { ASSERT(mp->m_quotainfo); xfs_inode_ag_iterator(mp, xfs_dqrele_inode, flags); } /*------------------------------------------------------------------------*/ #ifdef DEBUG /* * This contains all the test functions for XFS disk quotas. * Currently it does a quota accounting check. ie. it walks through * all inodes in the file system, calculating the dquot accounting fields, * and prints out any inconsistencies. */ xfs_dqhash_t *qmtest_udqtab; xfs_dqhash_t *qmtest_gdqtab; int qmtest_hashmask; int qmtest_nfails; struct mutex qcheck_lock; #define DQTEST_HASHVAL(mp, id) (((__psunsigned_t)(mp) + \ (__psunsigned_t)(id)) & \ (qmtest_hashmask - 1)) #define DQTEST_HASH(mp, id, type) ((type & XFS_DQ_USER) ? \ (qmtest_udqtab + \ DQTEST_HASHVAL(mp, id)) : \ (qmtest_gdqtab + \ DQTEST_HASHVAL(mp, id))) #define DQTEST_LIST_PRINT(l, NXT, title) \ { \ xfs_dqtest_t *dqp; int i = 0;\ xfs_debug(NULL, "%s (#%d)", title, (int) (l)->qh_nelems); \ for (dqp = (xfs_dqtest_t *)(l)->qh_next; dqp != NULL; \ dqp = (xfs_dqtest_t *)dqp->NXT) { \ xfs_debug(dqp->q_mount, \ " %d. \"%d (%s)\" bcnt = %d, icnt = %d", \ ++i, dqp->d_id, DQFLAGTO_TYPESTR(dqp), \ dqp->d_bcount, dqp->d_icount); } \ } typedef struct dqtest { uint dq_flags; /* various flags (XFS_DQ_*) */ struct list_head q_hashlist; xfs_dqhash_t *q_hash; /* the hashchain header */ xfs_mount_t *q_mount; /* filesystem this relates to */ xfs_dqid_t d_id; /* user id or group id */ xfs_qcnt_t d_bcount; /* # disk blocks owned by the user */ xfs_qcnt_t d_icount; /* # inodes owned by the user */ } xfs_dqtest_t; STATIC void xfs_qm_hashinsert(xfs_dqhash_t *h, xfs_dqtest_t *dqp) { list_add(&dqp->q_hashlist, &h->qh_list); h->qh_version++; h->qh_nelems++; } STATIC void xfs_qm_dqtest_print( struct xfs_mount *mp, struct dqtest *d) { xfs_debug(mp, "-----------DQTEST DQUOT----------------"); xfs_debug(mp, "---- dquot ID = %d", d->d_id); xfs_debug(mp, "---- fs = 0x%p", d->q_mount); xfs_debug(mp, "---- bcount = %Lu (0x%x)", d->d_bcount, (int)d->d_bcount); xfs_debug(mp, "---- icount = %Lu (0x%x)", d->d_icount, (int)d->d_icount); xfs_debug(mp, "---------------------------"); } STATIC void xfs_qm_dqtest_failed( xfs_dqtest_t *d, xfs_dquot_t *dqp, char *reason, xfs_qcnt_t a, xfs_qcnt_t b, int error) { qmtest_nfails++; if (error) xfs_debug(dqp->q_mount, "quotacheck failed id=%d, err=%d\nreason: %s", d->d_id, error, reason); else xfs_debug(dqp->q_mount, "quotacheck failed id=%d (%s) [%d != %d]", d->d_id, reason, (int)a, (int)b); xfs_qm_dqtest_print(dqp->q_mount, d); if (dqp) xfs_qm_dqprint(dqp); } STATIC int xfs_dqtest_cmp2( xfs_dqtest_t *d, xfs_dquot_t *dqp) { int err = 0; if (be64_to_cpu(dqp->q_core.d_icount) != d->d_icount) { xfs_qm_dqtest_failed(d, dqp, "icount mismatch", be64_to_cpu(dqp->q_core.d_icount), d->d_icount, 0); err++; } if (be64_to_cpu(dqp->q_core.d_bcount) != d->d_bcount) { xfs_qm_dqtest_failed(d, dqp, "bcount mismatch", be64_to_cpu(dqp->q_core.d_bcount), d->d_bcount, 0); err++; } if (dqp->q_core.d_blk_softlimit && be64_to_cpu(dqp->q_core.d_bcount) >= be64_to_cpu(dqp->q_core.d_blk_softlimit)) { if (!dqp->q_core.d_btimer && dqp->q_core.d_id) { xfs_debug(dqp->q_mount, "%d [%s] BLK TIMER NOT STARTED", d->d_id, DQFLAGTO_TYPESTR(d)); err++; } } if (dqp->q_core.d_ino_softlimit && be64_to_cpu(dqp->q_core.d_icount) >= be64_to_cpu(dqp->q_core.d_ino_softlimit)) { if (!dqp->q_core.d_itimer && dqp->q_core.d_id) { xfs_debug(dqp->q_mount, "%d [%s] INO TIMER NOT STARTED", d->d_id, DQFLAGTO_TYPESTR(d)); err++; } } #ifdef QUOTADEBUG if (!err) { xfs_debug(dqp->q_mount, "%d [%s] qchecked", d->d_id, DQFLAGTO_TYPESTR(d)); } #endif return (err); } STATIC void xfs_dqtest_cmp( xfs_dqtest_t *d) { xfs_dquot_t *dqp; int error; /* xfs_qm_dqtest_print(d); */ if ((error = xfs_qm_dqget(d->q_mount, NULL, d->d_id, d->dq_flags, 0, &dqp))) { xfs_qm_dqtest_failed(d, NULL, "dqget failed", 0, 0, error); return; } xfs_dqtest_cmp2(d, dqp); xfs_qm_dqput(dqp); } STATIC int xfs_qm_internalqcheck_dqget( xfs_mount_t *mp, xfs_dqid_t id, uint type, xfs_dqtest_t **O_dq) { xfs_dqtest_t *d; xfs_dqhash_t *h; h = DQTEST_HASH(mp, id, type); list_for_each_entry(d, &h->qh_list, q_hashlist) { if (d->d_id == id && mp == d->q_mount) { *O_dq = d; return (0); } } d = kmem_zalloc(sizeof(xfs_dqtest_t), KM_SLEEP); d->dq_flags = type; d->d_id = id; d->q_mount = mp; d->q_hash = h; INIT_LIST_HEAD(&d->q_hashlist); xfs_qm_hashinsert(h, d); *O_dq = d; return (0); } STATIC void xfs_qm_internalqcheck_get_dquots( xfs_mount_t *mp, xfs_dqid_t uid, xfs_dqid_t projid, xfs_dqid_t gid, xfs_dqtest_t **ud, xfs_dqtest_t **gd) { if (XFS_IS_UQUOTA_ON(mp)) xfs_qm_internalqcheck_dqget(mp, uid, XFS_DQ_USER, ud); if (XFS_IS_GQUOTA_ON(mp)) xfs_qm_internalqcheck_dqget(mp, gid, XFS_DQ_GROUP, gd); else if (XFS_IS_PQUOTA_ON(mp)) xfs_qm_internalqcheck_dqget(mp, projid, XFS_DQ_PROJ, gd); } STATIC void xfs_qm_internalqcheck_dqadjust( xfs_inode_t *ip, xfs_dqtest_t *d) { d->d_icount++; d->d_bcount += (xfs_qcnt_t)ip->i_d.di_nblocks; } STATIC int xfs_qm_internalqcheck_adjust( xfs_mount_t *mp, /* mount point for filesystem */ xfs_ino_t ino, /* inode number to get data for */ void __user *buffer, /* not used */ int ubsize, /* not used */ int *ubused, /* not used */ int *res) /* bulkstat result code */ { xfs_inode_t *ip; xfs_dqtest_t *ud, *gd; uint lock_flags; boolean_t ipreleased; int error; ASSERT(XFS_IS_QUOTA_RUNNING(mp)); if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) { *res = BULKSTAT_RV_NOTHING; xfs_debug(mp, "%s: ino=%llu, uqino=%llu, gqino=%llu\n", __func__, (unsigned long long) ino, (unsigned long long) mp->m_sb.sb_uquotino, (unsigned long long) mp->m_sb.sb_gquotino); return XFS_ERROR(EINVAL); } ipreleased = B_FALSE; again: lock_flags = XFS_ILOCK_SHARED; if ((error = xfs_iget(mp, NULL, ino, 0, lock_flags, &ip))) { *res = BULKSTAT_RV_NOTHING; return (error); } /* * This inode can have blocks after eof which can get released * when we send it to inactive. Since we don't check the dquot * until the after all our calculations are done, we must get rid * of those now. */ if (! ipreleased) { xfs_iunlock(ip, lock_flags); IRELE(ip); ipreleased = B_TRUE; goto again; } xfs_qm_internalqcheck_get_dquots(mp, (xfs_dqid_t) ip->i_d.di_uid, (xfs_dqid_t) xfs_get_projid(ip), (xfs_dqid_t) ip->i_d.di_gid, &ud, &gd); if (XFS_IS_UQUOTA_ON(mp)) { ASSERT(ud); xfs_qm_internalqcheck_dqadjust(ip, ud); } if (XFS_IS_OQUOTA_ON(mp)) { ASSERT(gd); xfs_qm_internalqcheck_dqadjust(ip, gd); } xfs_iunlock(ip, lock_flags); IRELE(ip); *res = BULKSTAT_RV_DIDONE; return (0); } /* PRIVATE, debugging */ int xfs_qm_internalqcheck( xfs_mount_t *mp) { xfs_ino_t lastino; int done, count; int i; int error; lastino = 0; qmtest_hashmask = 32; count = 5; done = 0; qmtest_nfails = 0; if (! XFS_IS_QUOTA_ON(mp)) return XFS_ERROR(ESRCH); xfs_log_force(mp, XFS_LOG_SYNC); XFS_bflush(mp->m_ddev_targp); xfs_log_force(mp, XFS_LOG_SYNC); XFS_bflush(mp->m_ddev_targp); mutex_lock(&qcheck_lock); /* There should be absolutely no quota activity while this is going on. */ qmtest_udqtab = kmem_zalloc(qmtest_hashmask * sizeof(xfs_dqhash_t), KM_SLEEP); qmtest_gdqtab = kmem_zalloc(qmtest_hashmask * sizeof(xfs_dqhash_t), KM_SLEEP); do { /* * Iterate thru all the inodes in the file system, * adjusting the corresponding dquot counters */ error = xfs_bulkstat(mp, &lastino, &count, xfs_qm_internalqcheck_adjust, 0, NULL, &done); if (error) { xfs_debug(mp, "Bulkstat returned error 0x%x", error); break; } } while (!done); xfs_debug(mp, "Checking results against system dquots"); for (i = 0; i < qmtest_hashmask; i++) { xfs_dqtest_t *d, *n; xfs_dqhash_t *h; h = &qmtest_udqtab[i]; list_for_each_entry_safe(d, n, &h->qh_list, q_hashlist) { xfs_dqtest_cmp(d); kmem_free(d); } h = &qmtest_gdqtab[i]; list_for_each_entry_safe(d, n, &h->qh_list, q_hashlist) { xfs_dqtest_cmp(d); kmem_free(d); } } if (qmtest_nfails) { xfs_debug(mp, "******** quotacheck failed ********"); xfs_debug(mp, "failures = %d", qmtest_nfails); } else { xfs_debug(mp, "******** quotacheck successful! ********"); } kmem_free(qmtest_udqtab); kmem_free(qmtest_gdqtab); mutex_unlock(&qcheck_lock); return (qmtest_nfails); } #endif /* DEBUG */