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075fe10286
xfs_sync_inodes is used to write back either file data or inode metadata. In general we always do these separately, except for one fishy case in xfs_fs_put_super that does both. So separate xfs_sync_inodes into separate xfs_sync_data and xfs_sync_attr functions. In xfs_fs_put_super we first call the data sync and then the attr sync as that was the previous order. The moved log force in that path doesn't make a difference because we will force the log again as part of the real unmount process. The filesystem readonly checks are not performed by the new function but instead moved into the callers, given that most callers alredy have it further up in the stack. Also add debug checks that we do not pass in incorrect flags in the new xfs_sync_data and xfs_sync_attr function and fix the one place that did pass in a wrong flag. Also remove a comment mentioning xfs_sync_inodes that has been incorrect for a while because we always take either the iolock or ilock in the sync path these days. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Eric Sandeen <sandeen@sandeen.net>
159 lines
3.4 KiB
C
159 lines
3.4 KiB
C
/*
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* Copyright (c) 2008, Christoph Hellwig
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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_dmapi.h"
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#include "xfs_sb.h"
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#include "xfs_inum.h"
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#include "xfs_ag.h"
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#include "xfs_mount.h"
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#include "xfs_quota.h"
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#include "xfs_log.h"
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#include "xfs_trans.h"
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#include "xfs_bmap_btree.h"
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#include "xfs_inode.h"
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#include "quota/xfs_qm.h"
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#include <linux/quota.h>
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STATIC int
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xfs_quota_type(int type)
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{
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switch (type) {
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case USRQUOTA:
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return XFS_DQ_USER;
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case GRPQUOTA:
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return XFS_DQ_GROUP;
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default:
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return XFS_DQ_PROJ;
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}
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}
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STATIC int
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xfs_fs_quota_sync(
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struct super_block *sb,
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int type)
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{
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struct xfs_mount *mp = XFS_M(sb);
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if (sb->s_flags & MS_RDONLY)
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return -EROFS;
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if (!XFS_IS_QUOTA_RUNNING(mp))
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return -ENOSYS;
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return -xfs_sync_data(mp, 0);
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}
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STATIC int
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xfs_fs_get_xstate(
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struct super_block *sb,
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struct fs_quota_stat *fqs)
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{
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struct xfs_mount *mp = XFS_M(sb);
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if (!XFS_IS_QUOTA_RUNNING(mp))
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return -ENOSYS;
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return -xfs_qm_scall_getqstat(mp, fqs);
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}
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STATIC int
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xfs_fs_set_xstate(
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struct super_block *sb,
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unsigned int uflags,
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int op)
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{
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struct xfs_mount *mp = XFS_M(sb);
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unsigned int flags = 0;
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if (sb->s_flags & MS_RDONLY)
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return -EROFS;
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if (!XFS_IS_QUOTA_RUNNING(mp))
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return -ENOSYS;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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if (uflags & XFS_QUOTA_UDQ_ACCT)
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flags |= XFS_UQUOTA_ACCT;
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if (uflags & XFS_QUOTA_PDQ_ACCT)
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flags |= XFS_PQUOTA_ACCT;
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if (uflags & XFS_QUOTA_GDQ_ACCT)
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flags |= XFS_GQUOTA_ACCT;
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if (uflags & XFS_QUOTA_UDQ_ENFD)
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flags |= XFS_UQUOTA_ENFD;
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if (uflags & (XFS_QUOTA_PDQ_ENFD|XFS_QUOTA_GDQ_ENFD))
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flags |= XFS_OQUOTA_ENFD;
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switch (op) {
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case Q_XQUOTAON:
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return -xfs_qm_scall_quotaon(mp, flags);
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case Q_XQUOTAOFF:
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if (!XFS_IS_QUOTA_ON(mp))
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return -EINVAL;
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return -xfs_qm_scall_quotaoff(mp, flags);
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case Q_XQUOTARM:
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if (XFS_IS_QUOTA_ON(mp))
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return -EINVAL;
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return -xfs_qm_scall_trunc_qfiles(mp, flags);
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}
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return -EINVAL;
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}
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STATIC int
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xfs_fs_get_xquota(
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struct super_block *sb,
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int type,
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qid_t id,
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struct fs_disk_quota *fdq)
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{
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struct xfs_mount *mp = XFS_M(sb);
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if (!XFS_IS_QUOTA_RUNNING(mp))
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return -ENOSYS;
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if (!XFS_IS_QUOTA_ON(mp))
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return -ESRCH;
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return -xfs_qm_scall_getquota(mp, id, xfs_quota_type(type), fdq);
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}
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STATIC int
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xfs_fs_set_xquota(
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struct super_block *sb,
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int type,
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qid_t id,
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struct fs_disk_quota *fdq)
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{
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struct xfs_mount *mp = XFS_M(sb);
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if (sb->s_flags & MS_RDONLY)
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return -EROFS;
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if (!XFS_IS_QUOTA_RUNNING(mp))
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return -ENOSYS;
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if (!XFS_IS_QUOTA_ON(mp))
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return -ESRCH;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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return -xfs_qm_scall_setqlim(mp, id, xfs_quota_type(type), fdq);
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}
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struct quotactl_ops xfs_quotactl_operations = {
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.quota_sync = xfs_fs_quota_sync,
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.get_xstate = xfs_fs_get_xstate,
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.set_xstate = xfs_fs_set_xstate,
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.get_xquota = xfs_fs_get_xquota,
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.set_xquota = xfs_fs_set_xquota,
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};
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