9d565ffa33
No need to parse the mount option into a structure before applying it to struct xfs_mount. The content of xfs_start_flags gets merged into xfs_parseargs. Calls inbetween don't care and can use mount members instead of the args struct. This patch uncovered that the mount option for shared filesystems wasn't ever exposed on Linux. The code to handle it is #if 0'ed in this patch pending a decision on this feature. I'll send a writeup about it to the list soon. SGI-PV: 987246 SGI-Modid: xfs-linux-melb:xfs-kern:32371a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Donald Douwsma <donaldd@sgi.com> Signed-off-by: David Chinner <david@fromorbit.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.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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.xfs_quotactl = (xfs_quotactl_t) fs_nosys,
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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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