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![Linus Torvalds](/assets/img/avatar_default.png)
This update contains: o RENAME_EXCHANGE support o Rework of the superblock logging infrastructure o Rework of the XFS_IOCTL_SETXATTR implementation - enables use inside user namespaces - fixes inconsistencies setting extent size hints o fixes for missing buffer type annotations used in log recovery o more consolidation of libxfs headers o preparation patches for block based PNFS support o miscellaneous bug fixes and cleanups -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAABAgAGBQJU2UQ6AAoJEK3oKUf0dfodNAwQAKD2T154VZCXZtjC6LobdEL4 tuk72eDEyduNQZ1yL8MPNf090lsFizoLmXocawQEKPHZnSnZu1E6VQLughI5wSge N658/5mNvuRQkvUTw13onPhNdOzSoqigiy+6u0qiZbhab72ZExfuloqAAgZ908Ak DWZRQNXDspG8olGD1EKyEOKAoWDgRljiBEUw7+wVAN2thdQRXs6pyyTcaIXst3j6 bk9EAeWZOK78OJUjtWlvIFv7RqjjUQL/8Z4Arr3lMuv8Y1fxS3oL8V9GjKae0MUn ZFPJzRHE9kfcO4AYAwYDUDW0Ia4ccq3sYu8FDzX6FTf3AqziQXKW/ovw83So5oEE vpT/ltsugWfu2feShvfa9FTYxqmecXUqoITZ4Sczm/8F9tDz0Q4HZ/GxleAmJyH9 89IbTlSgm6qy1nmSbg21x0CVuOqJqHFAG83nnMKv8X4gmaMg9SzdNlU1iL2ugBQ7 l2XKS2DKDbjgBnSdW+bOdBoFiMyCUjrwMAp23vYELuTIFSdHkTFsBQBvqtpjkJ0X KEutMaZdy8uo5DdPRN9k78OANbzOc4qYKJHTjiO5sQsMybsPNkciLBX49CgYFmw4 xoVQ+EYrebpBKi4WHyLKWFOWb5CP/AUtLgxsX0clQVBuuaEBhA306qic1ZZixtIm ea2Q8ODEgpzs8QWZ7j6+ =eZEU -----END PGP SIGNATURE----- Merge tag 'xfs-for-linus-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs Pull xfs update from Dave Chinner: "This update contains: - RENAME_EXCHANGE support - Rework of the superblock logging infrastructure - Rework of the XFS_IOCTL_SETXATTR implementation * enables use inside user namespaces * fixes inconsistencies setting extent size hints - fixes for missing buffer type annotations used in log recovery - more consolidation of libxfs headers - preparation patches for block based PNFS support - miscellaneous bug fixes and cleanups" * tag 'xfs-for-linus-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs: (37 commits) xfs: only trace buffer items if they exist xfs: report proper f_files in statfs if we overshoot imaxpct xfs: fix panic_mask documentation xfs: xfs_ioctl_setattr_check_projid can be static xfs: growfs should use synchronous transactions xfs: fix behaviour of XFS_IOC_FSSETXATTR on directories xfs: factor projid hint checking out of xfs_ioctl_setattr xfs: factor extsize hint checking out of xfs_ioctl_setattr xfs: XFS_IOCTL_SETXATTR can run in user namespaces xfs: kill xfs_ioctl_setattr behaviour mask xfs: disaggregate xfs_ioctl_setattr xfs: factor out xfs_ioctl_setattr transaciton preamble xfs: separate xflags from xfs_ioctl_setattr xfs: FSX_NONBLOCK is not used xfs: don't allocate an ioend for direct I/O completions xfs: change kmem_free to use generic kvfree() xfs: factor out a xfs_update_prealloc_flags() helper xfs: remove incorrect error negation in attr_multi ioctl xfs: set superblock buffer type correctly xfs: set buf types when converting extent formats ...
946 lines
25 KiB
C
946 lines
25 KiB
C
/*
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* Copyright (c) 2000-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <linux/capability.h>
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#include "xfs.h"
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#include "xfs_fs.h"
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#include "xfs_shared.h"
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#include "xfs_format.h"
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#include "xfs_log_format.h"
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#include "xfs_trans_resv.h"
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#include "xfs_bit.h"
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#include "xfs_sb.h"
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#include "xfs_mount.h"
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#include "xfs_inode.h"
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#include "xfs_trans.h"
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#include "xfs_error.h"
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#include "xfs_quota.h"
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#include "xfs_qm.h"
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#include "xfs_trace.h"
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#include "xfs_icache.h"
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STATIC int xfs_qm_log_quotaoff(xfs_mount_t *, xfs_qoff_logitem_t **, uint);
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STATIC int xfs_qm_log_quotaoff_end(xfs_mount_t *, xfs_qoff_logitem_t *,
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uint);
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STATIC uint xfs_qm_export_flags(uint);
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/*
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* Turn off quota accounting and/or enforcement for all udquots and/or
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* gdquots. Called only at unmount time.
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*
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* This assumes that there are no dquots of this file system cached
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* incore, and modifies the ondisk dquot directly. Therefore, for example,
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* it is an error to call this twice, without purging the cache.
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*/
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int
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xfs_qm_scall_quotaoff(
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xfs_mount_t *mp,
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uint flags)
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{
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struct xfs_quotainfo *q = mp->m_quotainfo;
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uint dqtype;
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int error;
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uint inactivate_flags;
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xfs_qoff_logitem_t *qoffstart;
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/*
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* No file system can have quotas enabled on disk but not in core.
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* Note that quota utilities (like quotaoff) _expect_
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* errno == -EEXIST here.
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*/
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if ((mp->m_qflags & flags) == 0)
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return -EEXIST;
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error = 0;
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flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
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/*
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* We don't want to deal with two quotaoffs messing up each other,
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* so we're going to serialize it. quotaoff isn't exactly a performance
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* critical thing.
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* If quotaoff, then we must be dealing with the root filesystem.
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*/
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ASSERT(q);
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mutex_lock(&q->qi_quotaofflock);
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/*
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* If we're just turning off quota enforcement, change mp and go.
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*/
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if ((flags & XFS_ALL_QUOTA_ACCT) == 0) {
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mp->m_qflags &= ~(flags);
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spin_lock(&mp->m_sb_lock);
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mp->m_sb.sb_qflags = mp->m_qflags;
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spin_unlock(&mp->m_sb_lock);
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mutex_unlock(&q->qi_quotaofflock);
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/* XXX what to do if error ? Revert back to old vals incore ? */
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return xfs_sync_sb(mp, false);
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}
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dqtype = 0;
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inactivate_flags = 0;
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/*
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* If accounting is off, we must turn enforcement off, clear the
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* quota 'CHKD' certificate to make it known that we have to
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* do a quotacheck the next time this quota is turned on.
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*/
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if (flags & XFS_UQUOTA_ACCT) {
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dqtype |= XFS_QMOPT_UQUOTA;
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flags |= (XFS_UQUOTA_CHKD | XFS_UQUOTA_ENFD);
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inactivate_flags |= XFS_UQUOTA_ACTIVE;
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}
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if (flags & XFS_GQUOTA_ACCT) {
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dqtype |= XFS_QMOPT_GQUOTA;
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flags |= (XFS_GQUOTA_CHKD | XFS_GQUOTA_ENFD);
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inactivate_flags |= XFS_GQUOTA_ACTIVE;
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}
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if (flags & XFS_PQUOTA_ACCT) {
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dqtype |= XFS_QMOPT_PQUOTA;
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flags |= (XFS_PQUOTA_CHKD | XFS_PQUOTA_ENFD);
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inactivate_flags |= XFS_PQUOTA_ACTIVE;
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}
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/*
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* Nothing to do? Don't complain. This happens when we're just
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* turning off quota enforcement.
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*/
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if ((mp->m_qflags & flags) == 0)
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goto out_unlock;
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/*
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* Write the LI_QUOTAOFF log record, and do SB changes atomically,
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* and synchronously. If we fail to write, we should abort the
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* operation as it cannot be recovered safely if we crash.
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*/
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error = xfs_qm_log_quotaoff(mp, &qoffstart, flags);
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if (error)
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goto out_unlock;
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/*
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* Next we clear the XFS_MOUNT_*DQ_ACTIVE bit(s) in the mount struct
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* to take care of the race between dqget and quotaoff. We don't take
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* any special locks to reset these bits. All processes need to check
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* these bits *after* taking inode lock(s) to see if the particular
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* quota type is in the process of being turned off. If *ACTIVE, it is
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* guaranteed that all dquot structures and all quotainode ptrs will all
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* stay valid as long as that inode is kept locked.
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*
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* There is no turning back after this.
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*/
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mp->m_qflags &= ~inactivate_flags;
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/*
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* Give back all the dquot reference(s) held by inodes.
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* Here we go thru every single incore inode in this file system, and
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* do a dqrele on the i_udquot/i_gdquot that it may have.
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* Essentially, as long as somebody has an inode locked, this guarantees
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* that quotas will not be turned off. This is handy because in a
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* transaction once we lock the inode(s) and check for quotaon, we can
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* depend on the quota inodes (and other things) being valid as long as
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* we keep the lock(s).
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*/
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xfs_qm_dqrele_all_inodes(mp, flags);
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/*
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* Next we make the changes in the quota flag in the mount struct.
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* This isn't protected by a particular lock directly, because we
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* don't want to take a mrlock every time we depend on quotas being on.
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*/
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mp->m_qflags &= ~flags;
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/*
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* Go through all the dquots of this file system and purge them,
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* according to what was turned off.
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*/
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xfs_qm_dqpurge_all(mp, dqtype);
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/*
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* Transactions that had started before ACTIVE state bit was cleared
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* could have logged many dquots, so they'd have higher LSNs than
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* the first QUOTAOFF log record does. If we happen to crash when
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* the tail of the log has gone past the QUOTAOFF record, but
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* before the last dquot modification, those dquots __will__
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* recover, and that's not good.
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*
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* So, we have QUOTAOFF start and end logitems; the start
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* logitem won't get overwritten until the end logitem appears...
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*/
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error = xfs_qm_log_quotaoff_end(mp, qoffstart, flags);
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if (error) {
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/* We're screwed now. Shutdown is the only option. */
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xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
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goto out_unlock;
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}
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/*
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* If all quotas are completely turned off, close shop.
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*/
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if (mp->m_qflags == 0) {
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mutex_unlock(&q->qi_quotaofflock);
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xfs_qm_destroy_quotainfo(mp);
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return 0;
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}
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/*
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* Release our quotainode references if we don't need them anymore.
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*/
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if ((dqtype & XFS_QMOPT_UQUOTA) && q->qi_uquotaip) {
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IRELE(q->qi_uquotaip);
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q->qi_uquotaip = NULL;
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}
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if ((dqtype & XFS_QMOPT_GQUOTA) && q->qi_gquotaip) {
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IRELE(q->qi_gquotaip);
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q->qi_gquotaip = NULL;
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}
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if ((dqtype & XFS_QMOPT_PQUOTA) && q->qi_pquotaip) {
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IRELE(q->qi_pquotaip);
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q->qi_pquotaip = NULL;
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}
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out_unlock:
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mutex_unlock(&q->qi_quotaofflock);
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return error;
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}
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STATIC int
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xfs_qm_scall_trunc_qfile(
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struct xfs_mount *mp,
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xfs_ino_t ino)
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{
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struct xfs_inode *ip;
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struct xfs_trans *tp;
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int error;
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if (ino == NULLFSINO)
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return 0;
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error = xfs_iget(mp, NULL, ino, 0, 0, &ip);
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if (error)
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return error;
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xfs_ilock(ip, XFS_IOLOCK_EXCL);
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tp = xfs_trans_alloc(mp, XFS_TRANS_TRUNCATE_FILE);
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error = xfs_trans_reserve(tp, &M_RES(mp)->tr_itruncate, 0, 0);
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if (error) {
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xfs_trans_cancel(tp, 0);
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xfs_iunlock(ip, XFS_IOLOCK_EXCL);
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goto out_put;
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}
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xfs_ilock(ip, XFS_ILOCK_EXCL);
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xfs_trans_ijoin(tp, ip, 0);
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ip->i_d.di_size = 0;
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xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
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error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, 0);
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if (error) {
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xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES |
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XFS_TRANS_ABORT);
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goto out_unlock;
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}
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ASSERT(ip->i_d.di_nextents == 0);
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xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
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error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
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out_unlock:
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xfs_iunlock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
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out_put:
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IRELE(ip);
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return error;
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}
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int
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xfs_qm_scall_trunc_qfiles(
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xfs_mount_t *mp,
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uint flags)
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{
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int error = -EINVAL;
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if (!xfs_sb_version_hasquota(&mp->m_sb) || flags == 0 ||
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(flags & ~XFS_DQ_ALLTYPES)) {
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xfs_debug(mp, "%s: flags=%x m_qflags=%x",
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__func__, flags, mp->m_qflags);
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return -EINVAL;
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}
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if (flags & XFS_DQ_USER) {
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error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_uquotino);
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if (error)
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return error;
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}
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if (flags & XFS_DQ_GROUP) {
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error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_gquotino);
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if (error)
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return error;
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}
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if (flags & XFS_DQ_PROJ)
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error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_pquotino);
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return error;
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}
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/*
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* Switch on (a given) quota enforcement for a filesystem. This takes
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* effect immediately.
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* (Switching on quota accounting must be done at mount time.)
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*/
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int
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xfs_qm_scall_quotaon(
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xfs_mount_t *mp,
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uint flags)
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{
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int error;
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uint qf;
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flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
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/*
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* Switching on quota accounting must be done at mount time.
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*/
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flags &= ~(XFS_ALL_QUOTA_ACCT);
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if (flags == 0) {
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xfs_debug(mp, "%s: zero flags, m_qflags=%x",
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__func__, mp->m_qflags);
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return -EINVAL;
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}
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/*
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* Can't enforce without accounting. We check the superblock
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* qflags here instead of m_qflags because rootfs can have
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* quota acct on ondisk without m_qflags' knowing.
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*/
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if (((mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) == 0 &&
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(flags & XFS_UQUOTA_ENFD)) ||
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((mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) == 0 &&
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(flags & XFS_GQUOTA_ENFD)) ||
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((mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) == 0 &&
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(flags & XFS_PQUOTA_ENFD))) {
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xfs_debug(mp,
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"%s: Can't enforce without acct, flags=%x sbflags=%x",
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__func__, flags, mp->m_sb.sb_qflags);
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return -EINVAL;
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}
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/*
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* If everything's up to-date incore, then don't waste time.
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*/
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if ((mp->m_qflags & flags) == flags)
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return -EEXIST;
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/*
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* Change sb_qflags on disk but not incore mp->qflags
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* if this is the root filesystem.
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*/
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spin_lock(&mp->m_sb_lock);
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qf = mp->m_sb.sb_qflags;
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mp->m_sb.sb_qflags = qf | flags;
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spin_unlock(&mp->m_sb_lock);
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/*
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* There's nothing to change if it's the same.
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*/
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if ((qf & flags) == flags)
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return -EEXIST;
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error = xfs_sync_sb(mp, false);
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if (error)
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return error;
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/*
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* If we aren't trying to switch on quota enforcement, we are done.
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*/
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if (((mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) !=
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(mp->m_qflags & XFS_UQUOTA_ACCT)) ||
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((mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) !=
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(mp->m_qflags & XFS_PQUOTA_ACCT)) ||
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((mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) !=
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(mp->m_qflags & XFS_GQUOTA_ACCT)))
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return 0;
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if (! XFS_IS_QUOTA_RUNNING(mp))
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return -ESRCH;
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/*
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* Switch on quota enforcement in core.
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*/
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mutex_lock(&mp->m_quotainfo->qi_quotaofflock);
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mp->m_qflags |= (flags & XFS_ALL_QUOTA_ENFD);
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mutex_unlock(&mp->m_quotainfo->qi_quotaofflock);
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return 0;
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}
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|
|
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/*
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* Return quota status information, such as uquota-off, enforcements, etc.
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* for Q_XGETQSTAT command.
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*/
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int
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xfs_qm_scall_getqstat(
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struct xfs_mount *mp,
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struct fs_quota_stat *out)
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{
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struct xfs_quotainfo *q = mp->m_quotainfo;
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struct xfs_inode *uip = NULL;
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struct xfs_inode *gip = NULL;
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struct xfs_inode *pip = NULL;
|
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bool tempuqip = false;
|
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bool tempgqip = false;
|
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bool temppqip = false;
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memset(out, 0, sizeof(fs_quota_stat_t));
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out->qs_version = FS_QSTAT_VERSION;
|
|
out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
|
|
(XFS_ALL_QUOTA_ACCT|
|
|
XFS_ALL_QUOTA_ENFD));
|
|
uip = q->qi_uquotaip;
|
|
gip = q->qi_gquotaip;
|
|
pip = q->qi_pquotaip;
|
|
if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
|
|
if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
|
|
0, 0, &uip) == 0)
|
|
tempuqip = true;
|
|
}
|
|
if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
|
|
if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
|
|
0, 0, &gip) == 0)
|
|
tempgqip = true;
|
|
}
|
|
/*
|
|
* Q_XGETQSTAT doesn't have room for both group and project quotas.
|
|
* So, allow the project quota values to be copied out only if
|
|
* there is no group quota information available.
|
|
*/
|
|
if (!gip) {
|
|
if (!pip && mp->m_sb.sb_pquotino != NULLFSINO) {
|
|
if (xfs_iget(mp, NULL, mp->m_sb.sb_pquotino,
|
|
0, 0, &pip) == 0)
|
|
temppqip = true;
|
|
}
|
|
} else
|
|
pip = NULL;
|
|
if (uip) {
|
|
out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
|
|
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_ino = mp->m_sb.sb_gquotino;
|
|
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 (pip) {
|
|
out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
|
|
out->qs_gquota.qfs_nblks = pip->i_d.di_nblocks;
|
|
out->qs_gquota.qfs_nextents = pip->i_d.di_nextents;
|
|
if (temppqip)
|
|
IRELE(pip);
|
|
}
|
|
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;
|
|
}
|
|
|
|
/*
|
|
* Return quota status information, such as uquota-off, enforcements, etc.
|
|
* for Q_XGETQSTATV command, to support separate project quota field.
|
|
*/
|
|
int
|
|
xfs_qm_scall_getqstatv(
|
|
struct xfs_mount *mp,
|
|
struct fs_quota_statv *out)
|
|
{
|
|
struct xfs_quotainfo *q = mp->m_quotainfo;
|
|
struct xfs_inode *uip = NULL;
|
|
struct xfs_inode *gip = NULL;
|
|
struct xfs_inode *pip = NULL;
|
|
bool tempuqip = false;
|
|
bool tempgqip = false;
|
|
bool temppqip = false;
|
|
|
|
out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
|
|
(XFS_ALL_QUOTA_ACCT|
|
|
XFS_ALL_QUOTA_ENFD));
|
|
out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
|
|
out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
|
|
out->qs_pquota.qfs_ino = mp->m_sb.sb_pquotino;
|
|
|
|
uip = q->qi_uquotaip;
|
|
gip = q->qi_gquotaip;
|
|
pip = q->qi_pquotaip;
|
|
if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
|
|
if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
|
|
0, 0, &uip) == 0)
|
|
tempuqip = true;
|
|
}
|
|
if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
|
|
if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
|
|
0, 0, &gip) == 0)
|
|
tempgqip = true;
|
|
}
|
|
if (!pip && mp->m_sb.sb_pquotino != NULLFSINO) {
|
|
if (xfs_iget(mp, NULL, mp->m_sb.sb_pquotino,
|
|
0, 0, &pip) == 0)
|
|
temppqip = 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 (pip) {
|
|
out->qs_pquota.qfs_nblks = pip->i_d.di_nblocks;
|
|
out->qs_pquota.qfs_nextents = pip->i_d.di_nextents;
|
|
if (temppqip)
|
|
IRELE(pip);
|
|
}
|
|
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_QC_MASK \
|
|
(QC_LIMIT_MASK | QC_TIMER_MASK | QC_WARNS_MASK)
|
|
|
|
/*
|
|
* Adjust quota limits, and start/stop timers accordingly.
|
|
*/
|
|
int
|
|
xfs_qm_scall_setqlim(
|
|
struct xfs_mount *mp,
|
|
xfs_dqid_t id,
|
|
uint type,
|
|
struct qc_dqblk *newlim)
|
|
{
|
|
struct xfs_quotainfo *q = mp->m_quotainfo;
|
|
struct xfs_disk_dquot *ddq;
|
|
struct xfs_dquot *dqp;
|
|
struct xfs_trans *tp;
|
|
int error;
|
|
xfs_qcnt_t hard, soft;
|
|
|
|
if (newlim->d_fieldmask & ~XFS_QC_MASK)
|
|
return -EINVAL;
|
|
if ((newlim->d_fieldmask & XFS_QC_MASK) == 0)
|
|
return 0;
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
mutex_lock(&q->qi_quotaofflock);
|
|
|
|
/*
|
|
* Get the dquot (locked) before we start, as we need to do a
|
|
* transaction to allocate it if it doesn't exist. Once we have the
|
|
* dquot, unlock it so we can start the next transaction safely. We hold
|
|
* a reference to the dquot, so it's safe to do this unlock/lock without
|
|
* it being reclaimed in the mean time.
|
|
*/
|
|
error = xfs_qm_dqget(mp, NULL, id, type, XFS_QMOPT_DQALLOC, &dqp);
|
|
if (error) {
|
|
ASSERT(error != -ENOENT);
|
|
goto out_unlock;
|
|
}
|
|
xfs_dqunlock(dqp);
|
|
|
|
tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SETQLIM);
|
|
error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_setqlim, 0, 0);
|
|
if (error) {
|
|
xfs_trans_cancel(tp, 0);
|
|
goto out_rele;
|
|
}
|
|
|
|
xfs_dqlock(dqp);
|
|
xfs_trans_dqjoin(tp, dqp);
|
|
ddq = &dqp->q_core;
|
|
|
|
/*
|
|
* Make sure that hardlimits are >= soft limits before changing.
|
|
*/
|
|
hard = (newlim->d_fieldmask & QC_SPC_HARD) ?
|
|
(xfs_qcnt_t) XFS_B_TO_FSB(mp, newlim->d_spc_hardlimit) :
|
|
be64_to_cpu(ddq->d_blk_hardlimit);
|
|
soft = (newlim->d_fieldmask & QC_SPC_SOFT) ?
|
|
(xfs_qcnt_t) XFS_B_TO_FSB(mp, newlim->d_spc_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);
|
|
xfs_dquot_set_prealloc_limits(dqp);
|
|
if (id == 0) {
|
|
q->qi_bhardlimit = hard;
|
|
q->qi_bsoftlimit = soft;
|
|
}
|
|
} else {
|
|
xfs_debug(mp, "blkhard %Ld < blksoft %Ld", hard, soft);
|
|
}
|
|
hard = (newlim->d_fieldmask & QC_RT_SPC_HARD) ?
|
|
(xfs_qcnt_t) XFS_B_TO_FSB(mp, newlim->d_rt_spc_hardlimit) :
|
|
be64_to_cpu(ddq->d_rtb_hardlimit);
|
|
soft = (newlim->d_fieldmask & QC_RT_SPC_SOFT) ?
|
|
(xfs_qcnt_t) XFS_B_TO_FSB(mp, newlim->d_rt_spc_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", hard, soft);
|
|
}
|
|
|
|
hard = (newlim->d_fieldmask & QC_INO_HARD) ?
|
|
(xfs_qcnt_t) newlim->d_ino_hardlimit :
|
|
be64_to_cpu(ddq->d_ino_hardlimit);
|
|
soft = (newlim->d_fieldmask & QC_INO_SOFT) ?
|
|
(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", hard, soft);
|
|
}
|
|
|
|
/*
|
|
* Update warnings counter(s) if requested
|
|
*/
|
|
if (newlim->d_fieldmask & QC_SPC_WARNS)
|
|
ddq->d_bwarns = cpu_to_be16(newlim->d_spc_warns);
|
|
if (newlim->d_fieldmask & QC_INO_WARNS)
|
|
ddq->d_iwarns = cpu_to_be16(newlim->d_ino_warns);
|
|
if (newlim->d_fieldmask & QC_RT_SPC_WARNS)
|
|
ddq->d_rtbwarns = cpu_to_be16(newlim->d_rt_spc_warns);
|
|
|
|
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 & QC_SPC_TIMER) {
|
|
q->qi_btimelimit = newlim->d_spc_timer;
|
|
ddq->d_btimer = cpu_to_be32(newlim->d_spc_timer);
|
|
}
|
|
if (newlim->d_fieldmask & QC_INO_TIMER) {
|
|
q->qi_itimelimit = newlim->d_ino_timer;
|
|
ddq->d_itimer = cpu_to_be32(newlim->d_ino_timer);
|
|
}
|
|
if (newlim->d_fieldmask & QC_RT_SPC_TIMER) {
|
|
q->qi_rtbtimelimit = newlim->d_rt_spc_timer;
|
|
ddq->d_rtbtimer = cpu_to_be32(newlim->d_rt_spc_timer);
|
|
}
|
|
if (newlim->d_fieldmask & QC_SPC_WARNS)
|
|
q->qi_bwarnlimit = newlim->d_spc_warns;
|
|
if (newlim->d_fieldmask & QC_INO_WARNS)
|
|
q->qi_iwarnlimit = newlim->d_ino_warns;
|
|
if (newlim->d_fieldmask & QC_RT_SPC_WARNS)
|
|
q->qi_rtbwarnlimit = newlim->d_rt_spc_warns;
|
|
} 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);
|
|
|
|
out_rele:
|
|
xfs_qm_dqrele(dqp);
|
|
out_unlock:
|
|
mutex_unlock(&q->qi_quotaofflock);
|
|
return error;
|
|
}
|
|
|
|
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);
|
|
|
|
error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_equotaoff, 0, 0);
|
|
if (error) {
|
|
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;
|
|
|
|
*qoffstartp = NULL;
|
|
|
|
tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF);
|
|
error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_quotaoff, 0, 0);
|
|
if (error) {
|
|
xfs_trans_cancel(tp, 0);
|
|
goto out;
|
|
}
|
|
|
|
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);
|
|
mp->m_sb.sb_qflags = (mp->m_qflags & ~(flags)) & XFS_MOUNT_QUOTA_ALL;
|
|
spin_unlock(&mp->m_sb_lock);
|
|
|
|
xfs_log_sb(tp);
|
|
|
|
/*
|
|
* 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);
|
|
if (error)
|
|
goto out;
|
|
|
|
*qoffstartp = qoffi;
|
|
out:
|
|
return error;
|
|
}
|
|
|
|
|
|
int
|
|
xfs_qm_scall_getquota(
|
|
struct xfs_mount *mp,
|
|
xfs_dqid_t id,
|
|
uint type,
|
|
struct qc_dqblk *dst)
|
|
{
|
|
struct xfs_dquot *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.
|
|
*/
|
|
error = xfs_qm_dqget(mp, NULL, id, type, 0, &dqp);
|
|
if (error)
|
|
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)) {
|
|
error = -ENOENT;
|
|
goto out_put;
|
|
}
|
|
|
|
memset(dst, 0, sizeof(*dst));
|
|
dst->d_spc_hardlimit =
|
|
XFS_FSB_TO_B(mp, be64_to_cpu(dqp->q_core.d_blk_hardlimit));
|
|
dst->d_spc_softlimit =
|
|
XFS_FSB_TO_B(mp, be64_to_cpu(dqp->q_core.d_blk_softlimit));
|
|
dst->d_ino_hardlimit = be64_to_cpu(dqp->q_core.d_ino_hardlimit);
|
|
dst->d_ino_softlimit = be64_to_cpu(dqp->q_core.d_ino_softlimit);
|
|
dst->d_space = XFS_FSB_TO_B(mp, dqp->q_res_bcount);
|
|
dst->d_ino_count = dqp->q_res_icount;
|
|
dst->d_spc_timer = be32_to_cpu(dqp->q_core.d_btimer);
|
|
dst->d_ino_timer = be32_to_cpu(dqp->q_core.d_itimer);
|
|
dst->d_ino_warns = be16_to_cpu(dqp->q_core.d_iwarns);
|
|
dst->d_spc_warns = be16_to_cpu(dqp->q_core.d_bwarns);
|
|
dst->d_rt_spc_hardlimit =
|
|
XFS_FSB_TO_B(mp, be64_to_cpu(dqp->q_core.d_rtb_hardlimit));
|
|
dst->d_rt_spc_softlimit =
|
|
XFS_FSB_TO_B(mp, be64_to_cpu(dqp->q_core.d_rtb_softlimit));
|
|
dst->d_rt_space = XFS_FSB_TO_B(mp, dqp->q_res_rtbcount);
|
|
dst->d_rt_spc_timer = be32_to_cpu(dqp->q_core.d_rtbtimer);
|
|
dst->d_rt_spc_warns = be16_to_cpu(dqp->q_core.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) &&
|
|
dqp->q_core.d_flags == XFS_DQ_USER) ||
|
|
(!XFS_IS_GQUOTA_ENFORCED(mp) &&
|
|
dqp->q_core.d_flags == XFS_DQ_GROUP) ||
|
|
(!XFS_IS_PQUOTA_ENFORCED(mp) &&
|
|
dqp->q_core.d_flags == XFS_DQ_PROJ)) {
|
|
dst->d_spc_timer = 0;
|
|
dst->d_ino_timer = 0;
|
|
dst->d_rt_spc_timer = 0;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
if (((XFS_IS_UQUOTA_ENFORCED(mp) && type == XFS_DQ_USER) ||
|
|
(XFS_IS_GQUOTA_ENFORCED(mp) && type == XFS_DQ_GROUP) ||
|
|
(XFS_IS_PQUOTA_ENFORCED(mp) && type == XFS_DQ_PROJ)) &&
|
|
id != 0) {
|
|
if ((dst->d_space > dst->d_spc_softlimit) &&
|
|
(dst->d_spc_softlimit > 0)) {
|
|
ASSERT(dst->d_spc_timer != 0);
|
|
}
|
|
if ((dst->d_ino_count > dst->d_ino_softlimit) &&
|
|
(dst->d_ino_softlimit > 0)) {
|
|
ASSERT(dst->d_ino_timer != 0);
|
|
}
|
|
}
|
|
#endif
|
|
out_put:
|
|
xfs_qm_dqput(dqp);
|
|
return error;
|
|
}
|
|
|
|
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_GQUOTA_ACCT)
|
|
uflags |= FS_QUOTA_GDQ_ACCT;
|
|
if (flags & XFS_PQUOTA_ACCT)
|
|
uflags |= FS_QUOTA_PDQ_ACCT;
|
|
if (flags & XFS_UQUOTA_ENFD)
|
|
uflags |= FS_QUOTA_UDQ_ENFD;
|
|
if (flags & XFS_GQUOTA_ENFD)
|
|
uflags |= FS_QUOTA_GDQ_ENFD;
|
|
if (flags & XFS_PQUOTA_ENFD)
|
|
uflags |= FS_QUOTA_PDQ_ENFD;
|
|
return uflags;
|
|
}
|
|
|
|
|
|
STATIC int
|
|
xfs_dqrele_inode(
|
|
struct xfs_inode *ip,
|
|
int flags,
|
|
void *args)
|
|
{
|
|
/* skip quota inodes */
|
|
if (ip == ip->i_mount->m_quotainfo->qi_uquotaip ||
|
|
ip == ip->i_mount->m_quotainfo->qi_gquotaip ||
|
|
ip == ip->i_mount->m_quotainfo->qi_pquotaip) {
|
|
ASSERT(ip->i_udquot == NULL);
|
|
ASSERT(ip->i_gdquot == NULL);
|
|
ASSERT(ip->i_pdquot == 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_GQUOTA_ACCT) && ip->i_gdquot) {
|
|
xfs_qm_dqrele(ip->i_gdquot);
|
|
ip->i_gdquot = NULL;
|
|
}
|
|
if ((flags & XFS_PQUOTA_ACCT) && ip->i_pdquot) {
|
|
xfs_qm_dqrele(ip->i_pdquot);
|
|
ip->i_pdquot = 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, NULL);
|
|
}
|