forked from luck/tmp_suning_uos_patched
fcafb71b57
Currently we call from the nicely abstracted linux quotaops into a ugly multiplexer just to split the calls out at the same boundary again. Rewrite the quota ops handling to remove that obfucation. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <david@fromorbit.com>
153 lines
3.8 KiB
C
153 lines
3.8 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 "xfs.h"
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#include "xfs_fs.h"
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#include "xfs_types.h"
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#include "xfs_log.h"
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#include "xfs_inum.h"
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#include "xfs_trans.h"
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#include "xfs_sb.h"
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#include "xfs_ag.h"
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#include "xfs_dir2.h"
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#include "xfs_dmapi.h"
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#include "xfs_mount.h"
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#include "xfs_quota.h"
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#include "xfs_error.h"
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STATIC struct xfs_dquot *
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xfs_dqvopchown_default(
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struct xfs_trans *tp,
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struct xfs_inode *ip,
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struct xfs_dquot **dqp,
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struct xfs_dquot *dq)
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{
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return NULL;
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}
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/*
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* Clear the quotaflags in memory and in the superblock.
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*/
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int
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xfs_mount_reset_sbqflags(xfs_mount_t *mp)
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{
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int error;
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xfs_trans_t *tp;
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mp->m_qflags = 0;
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/*
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* It is OK to look at sb_qflags here in mount path,
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* without m_sb_lock.
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*/
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if (mp->m_sb.sb_qflags == 0)
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return 0;
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spin_lock(&mp->m_sb_lock);
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mp->m_sb.sb_qflags = 0;
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spin_unlock(&mp->m_sb_lock);
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/*
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* if the fs is readonly, let the incore superblock run
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* with quotas off but don't flush the update out to disk
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*/
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if (mp->m_flags & XFS_MOUNT_RDONLY)
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return 0;
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#ifdef QUOTADEBUG
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xfs_fs_cmn_err(CE_NOTE, mp, "Writing superblock quota changes");
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#endif
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tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE);
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if ((error = xfs_trans_reserve(tp, 0, mp->m_sb.sb_sectsize + 128, 0, 0,
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XFS_DEFAULT_LOG_COUNT))) {
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xfs_trans_cancel(tp, 0);
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xfs_fs_cmn_err(CE_ALERT, mp,
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"xfs_mount_reset_sbqflags: Superblock update failed!");
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return error;
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}
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xfs_mod_sb(tp, XFS_SB_QFLAGS);
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error = xfs_trans_commit(tp, 0);
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return error;
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}
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STATIC int
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xfs_noquota_init(
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xfs_mount_t *mp,
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uint *needquotamount,
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uint *quotaflags)
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{
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int error = 0;
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*quotaflags = 0;
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*needquotamount = B_FALSE;
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ASSERT(!XFS_IS_QUOTA_ON(mp));
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/*
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* If a file system had quotas running earlier, but decided to
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* mount without -o uquota/pquota/gquota options, revoke the
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* quotachecked license.
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*/
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if (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_ACCT) {
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cmn_err(CE_NOTE,
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"XFS resetting qflags for filesystem %s",
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mp->m_fsname);
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error = xfs_mount_reset_sbqflags(mp);
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}
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return error;
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}
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static struct xfs_qmops xfs_qmcore_stub = {
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.xfs_qminit = (xfs_qminit_t) xfs_noquota_init,
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.xfs_qmdone = (xfs_qmdone_t) fs_noerr,
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.xfs_qmmount = (xfs_qmmount_t) fs_noerr,
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.xfs_qmunmount = (xfs_qmunmount_t) fs_noerr,
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.xfs_dqrele = (xfs_dqrele_t) fs_noerr,
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.xfs_dqattach = (xfs_dqattach_t) fs_noerr,
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.xfs_dqdetach = (xfs_dqdetach_t) fs_noerr,
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.xfs_dqpurgeall = (xfs_dqpurgeall_t) fs_noerr,
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.xfs_dqvopalloc = (xfs_dqvopalloc_t) fs_noerr,
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.xfs_dqvopcreate = (xfs_dqvopcreate_t) fs_noerr,
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.xfs_dqvoprename = (xfs_dqvoprename_t) fs_noerr,
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.xfs_dqvopchown = xfs_dqvopchown_default,
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.xfs_dqvopchownresv = (xfs_dqvopchownresv_t) fs_noerr,
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.xfs_dqstatvfs = (xfs_dqstatvfs_t) fs_noval,
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.xfs_dqsync = (xfs_dqsync_t) fs_noerr,
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};
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int
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xfs_qmops_get(struct xfs_mount *mp)
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{
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if (XFS_IS_QUOTA_RUNNING(mp)) {
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#ifdef CONFIG_XFS_QUOTA
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mp->m_qm_ops = &xfs_qmcore_xfs;
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#else
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cmn_err(CE_WARN,
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"XFS: qouta support not available in this kernel.");
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return EINVAL;
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#endif
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} else {
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mp->m_qm_ops = &xfs_qmcore_stub;
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}
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return 0;
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}
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void
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xfs_qmops_put(struct xfs_mount *mp)
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{
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}
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