b09cc77109
Mount options are now parsed by the main XFS module and rejected if quota support is not available, and there are some new quota operation for the quotactl syscall and calls to quote in the mount, unmount and sync callchains. SGI-PV: 969608 SGI-Modid: xfs-linux-melb:xfs-kern:29503a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
262 lines
6.8 KiB
C
262 lines
6.8 KiB
C
/*
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* Copyright (c) 2000-2006 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_bit.h"
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#include "xfs_log.h"
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#include "xfs_inum.h"
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#include "xfs_clnt.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_alloc.h"
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#include "xfs_dmapi.h"
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#include "xfs_quota.h"
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#include "xfs_mount.h"
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#include "xfs_bmap_btree.h"
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#include "xfs_alloc_btree.h"
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#include "xfs_ialloc_btree.h"
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#include "xfs_dir2_sf.h"
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#include "xfs_attr_sf.h"
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#include "xfs_dinode.h"
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#include "xfs_inode.h"
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#include "xfs_ialloc.h"
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#include "xfs_itable.h"
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#include "xfs_btree.h"
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#include "xfs_bmap.h"
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#include "xfs_rtalloc.h"
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#include "xfs_error.h"
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#include "xfs_rw.h"
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#include "xfs_acl.h"
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#include "xfs_attr.h"
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#include "xfs_buf_item.h"
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#include "xfs_qm.h"
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STATIC void
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xfs_fill_statvfs_from_dquot(
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bhv_statvfs_t *statp,
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xfs_disk_dquot_t *dp)
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{
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__uint64_t limit;
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limit = dp->d_blk_softlimit ?
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be64_to_cpu(dp->d_blk_softlimit) :
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be64_to_cpu(dp->d_blk_hardlimit);
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if (limit && statp->f_blocks > limit) {
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statp->f_blocks = limit;
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statp->f_bfree =
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(statp->f_blocks > be64_to_cpu(dp->d_bcount)) ?
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(statp->f_blocks - be64_to_cpu(dp->d_bcount)) : 0;
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}
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limit = dp->d_ino_softlimit ?
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be64_to_cpu(dp->d_ino_softlimit) :
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be64_to_cpu(dp->d_ino_hardlimit);
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if (limit && statp->f_files > limit) {
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statp->f_files = limit;
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statp->f_ffree =
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(statp->f_files > be64_to_cpu(dp->d_icount)) ?
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(statp->f_ffree - be64_to_cpu(dp->d_icount)) : 0;
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}
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}
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/*
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* Directory tree accounting is implemented using project quotas, where
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* the project identifier is inherited from parent directories.
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* A statvfs (df, etc.) of a directory that is using project quota should
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* return a statvfs of the project, not the entire filesystem.
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* This makes such trees appear as if they are filesystems in themselves.
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*/
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STATIC void
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xfs_qm_statvfs(
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xfs_inode_t *ip,
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bhv_statvfs_t *statp)
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{
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xfs_mount_t *mp = ip->i_mount;
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xfs_dquot_t *dqp;
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if (!(ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) ||
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!((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))) ==
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(XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))
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return;
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if (!xfs_qm_dqget(mp, NULL, ip->i_d.di_projid, XFS_DQ_PROJ, 0, &dqp)) {
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xfs_disk_dquot_t *dp = &dqp->q_core;
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xfs_fill_statvfs_from_dquot(statp, dp);
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xfs_qm_dqput(dqp);
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}
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}
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STATIC int
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xfs_qm_newmount(
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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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uint quotaondisk;
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uint uquotaondisk = 0, gquotaondisk = 0, pquotaondisk = 0;
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*quotaflags = 0;
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*needquotamount = B_FALSE;
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quotaondisk = XFS_SB_VERSION_HASQUOTA(&mp->m_sb) &&
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(mp->m_sb.sb_qflags & XFS_ALL_QUOTA_ACCT);
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if (quotaondisk) {
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uquotaondisk = mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT;
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pquotaondisk = mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT;
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gquotaondisk = mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT;
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}
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/*
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* If the device itself is read-only, we can't allow
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* the user to change the state of quota on the mount -
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* this would generate a transaction on the ro device,
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* which would lead to an I/O error and shutdown
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*/
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if (((uquotaondisk && !XFS_IS_UQUOTA_ON(mp)) ||
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(!uquotaondisk && XFS_IS_UQUOTA_ON(mp)) ||
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(pquotaondisk && !XFS_IS_PQUOTA_ON(mp)) ||
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(!pquotaondisk && XFS_IS_PQUOTA_ON(mp)) ||
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(gquotaondisk && !XFS_IS_GQUOTA_ON(mp)) ||
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(!gquotaondisk && XFS_IS_OQUOTA_ON(mp))) &&
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xfs_dev_is_read_only(mp, "changing quota state")) {
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cmn_err(CE_WARN,
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"XFS: please mount with%s%s%s%s.",
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(!quotaondisk ? "out quota" : ""),
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(uquotaondisk ? " usrquota" : ""),
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(pquotaondisk ? " prjquota" : ""),
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(gquotaondisk ? " grpquota" : ""));
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return XFS_ERROR(EPERM);
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}
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if (XFS_IS_QUOTA_ON(mp) || quotaondisk) {
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/*
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* Call mount_quotas at this point only if we won't have to do
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* a quotacheck.
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*/
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if (quotaondisk && !XFS_QM_NEED_QUOTACHECK(mp)) {
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/*
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* If an error occured, qm_mount_quotas code
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* has already disabled quotas. So, just finish
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* mounting, and get on with the boring life
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* without disk quotas.
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*/
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xfs_qm_mount_quotas(mp, 0);
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} else {
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/*
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* Clear the quota flags, but remember them. This
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* is so that the quota code doesn't get invoked
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* before we're ready. This can happen when an
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* inode goes inactive and wants to free blocks,
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* or via xfs_log_mount_finish.
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*/
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*needquotamount = B_TRUE;
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*quotaflags = mp->m_qflags;
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mp->m_qflags = 0;
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}
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}
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return 0;
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}
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STATIC int
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xfs_qm_endmount(
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xfs_mount_t *mp,
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uint needquotamount,
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uint quotaflags,
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int mfsi_flags)
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{
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if (needquotamount) {
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ASSERT(mp->m_qflags == 0);
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mp->m_qflags = quotaflags;
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xfs_qm_mount_quotas(mp, mfsi_flags);
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}
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#if defined(DEBUG) && defined(XFS_LOUD_RECOVERY)
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if (! (XFS_IS_QUOTA_ON(mp)))
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xfs_fs_cmn_err(CE_NOTE, mp, "Disk quotas not turned on");
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else
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xfs_fs_cmn_err(CE_NOTE, mp, "Disk quotas turned on");
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#endif
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#ifdef QUOTADEBUG
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if (XFS_IS_QUOTA_ON(mp) && xfs_qm_internalqcheck(mp))
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cmn_err(CE_WARN, "XFS: mount internalqcheck failed");
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#endif
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return 0;
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}
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STATIC void
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xfs_qm_dqrele_null(
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xfs_dquot_t *dq)
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{
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/*
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* Called from XFS, where we always check first for a NULL dquot.
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*/
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if (!dq)
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return;
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xfs_qm_dqrele(dq);
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}
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struct xfs_qmops xfs_qmcore_xfs = {
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.xfs_qminit = xfs_qm_newmount,
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.xfs_qmdone = xfs_qm_unmount_quotadestroy,
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.xfs_qmmount = xfs_qm_endmount,
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.xfs_qmunmount = xfs_qm_unmount_quotas,
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.xfs_dqrele = xfs_qm_dqrele_null,
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.xfs_dqattach = xfs_qm_dqattach,
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.xfs_dqdetach = xfs_qm_dqdetach,
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.xfs_dqpurgeall = xfs_qm_dqpurge_all,
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.xfs_dqvopalloc = xfs_qm_vop_dqalloc,
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.xfs_dqvopcreate = xfs_qm_vop_dqattach_and_dqmod_newinode,
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.xfs_dqvoprename = xfs_qm_vop_rename_dqattach,
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.xfs_dqvopchown = xfs_qm_vop_chown,
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.xfs_dqvopchownresv = xfs_qm_vop_chown_reserve,
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.xfs_dqstatvfs = xfs_qm_statvfs,
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.xfs_dqsync = xfs_qm_sync,
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.xfs_quotactl = xfs_qm_quotactl,
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.xfs_dqtrxops = &xfs_trans_dquot_ops,
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};
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EXPORT_SYMBOL(xfs_qmcore_xfs);
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void __init
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xfs_qm_init(void)
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{
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printk(KERN_INFO "SGI XFS Quota Management subsystem\n");
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mutex_init(&xfs_Gqm_lock);
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xfs_qm_init_procfs();
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}
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void __exit
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xfs_qm_exit(void)
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{
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xfs_qm_cleanup_procfs();
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if (qm_dqzone)
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kmem_zone_destroy(qm_dqzone);
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if (qm_dqtrxzone)
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kmem_zone_destroy(qm_dqtrxzone);
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}
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