177 lines
4.8 KiB
C
177 lines
4.8 KiB
C
/*
|
|
* Copyright (c) 2000-2006 Silicon Graphics, Inc.
|
|
* All Rights Reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it would be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
#include "xfs.h"
|
|
#include "xfs_fs.h"
|
|
#include "xfs_bit.h"
|
|
#include "xfs_log.h"
|
|
#include "xfs_inum.h"
|
|
#include "xfs_trans.h"
|
|
#include "xfs_sb.h"
|
|
#include "xfs_ag.h"
|
|
#include "xfs_alloc.h"
|
|
#include "xfs_quota.h"
|
|
#include "xfs_mount.h"
|
|
#include "xfs_bmap_btree.h"
|
|
#include "xfs_inode.h"
|
|
#include "xfs_itable.h"
|
|
#include "xfs_bmap.h"
|
|
#include "xfs_rtalloc.h"
|
|
#include "xfs_error.h"
|
|
#include "xfs_attr.h"
|
|
#include "xfs_buf_item.h"
|
|
#include "xfs_qm.h"
|
|
|
|
|
|
STATIC void
|
|
xfs_fill_statvfs_from_dquot(
|
|
struct kstatfs *statp,
|
|
xfs_disk_dquot_t *dp)
|
|
{
|
|
__uint64_t limit;
|
|
|
|
limit = dp->d_blk_softlimit ?
|
|
be64_to_cpu(dp->d_blk_softlimit) :
|
|
be64_to_cpu(dp->d_blk_hardlimit);
|
|
if (limit && statp->f_blocks > limit) {
|
|
statp->f_blocks = limit;
|
|
statp->f_bfree = statp->f_bavail =
|
|
(statp->f_blocks > be64_to_cpu(dp->d_bcount)) ?
|
|
(statp->f_blocks - be64_to_cpu(dp->d_bcount)) : 0;
|
|
}
|
|
|
|
limit = dp->d_ino_softlimit ?
|
|
be64_to_cpu(dp->d_ino_softlimit) :
|
|
be64_to_cpu(dp->d_ino_hardlimit);
|
|
if (limit && statp->f_files > limit) {
|
|
statp->f_files = limit;
|
|
statp->f_ffree =
|
|
(statp->f_files > be64_to_cpu(dp->d_icount)) ?
|
|
(statp->f_ffree - be64_to_cpu(dp->d_icount)) : 0;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Directory tree accounting is implemented using project quotas, where
|
|
* the project identifier is inherited from parent directories.
|
|
* A statvfs (df, etc.) of a directory that is using project quota should
|
|
* return a statvfs of the project, not the entire filesystem.
|
|
* This makes such trees appear as if they are filesystems in themselves.
|
|
*/
|
|
void
|
|
xfs_qm_statvfs(
|
|
xfs_inode_t *ip,
|
|
struct kstatfs *statp)
|
|
{
|
|
xfs_mount_t *mp = ip->i_mount;
|
|
xfs_dquot_t *dqp;
|
|
|
|
if (!xfs_qm_dqget(mp, NULL, xfs_get_projid(ip), XFS_DQ_PROJ, 0, &dqp)) {
|
|
xfs_fill_statvfs_from_dquot(statp, &dqp->q_core);
|
|
xfs_qm_dqput(dqp);
|
|
}
|
|
}
|
|
|
|
int
|
|
xfs_qm_newmount(
|
|
xfs_mount_t *mp,
|
|
uint *needquotamount,
|
|
uint *quotaflags)
|
|
{
|
|
uint quotaondisk;
|
|
uint uquotaondisk = 0, gquotaondisk = 0, pquotaondisk = 0;
|
|
|
|
quotaondisk = xfs_sb_version_hasquota(&mp->m_sb) &&
|
|
(mp->m_sb.sb_qflags & XFS_ALL_QUOTA_ACCT);
|
|
|
|
if (quotaondisk) {
|
|
uquotaondisk = mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT;
|
|
pquotaondisk = mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT;
|
|
gquotaondisk = mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT;
|
|
}
|
|
|
|
/*
|
|
* If the device itself is read-only, we can't allow
|
|
* the user to change the state of quota on the mount -
|
|
* this would generate a transaction on the ro device,
|
|
* which would lead to an I/O error and shutdown
|
|
*/
|
|
|
|
if (((uquotaondisk && !XFS_IS_UQUOTA_ON(mp)) ||
|
|
(!uquotaondisk && XFS_IS_UQUOTA_ON(mp)) ||
|
|
(pquotaondisk && !XFS_IS_PQUOTA_ON(mp)) ||
|
|
(!pquotaondisk && XFS_IS_PQUOTA_ON(mp)) ||
|
|
(gquotaondisk && !XFS_IS_GQUOTA_ON(mp)) ||
|
|
(!gquotaondisk && XFS_IS_OQUOTA_ON(mp))) &&
|
|
xfs_dev_is_read_only(mp, "changing quota state")) {
|
|
xfs_warn(mp, "please mount with%s%s%s%s.",
|
|
(!quotaondisk ? "out quota" : ""),
|
|
(uquotaondisk ? " usrquota" : ""),
|
|
(pquotaondisk ? " prjquota" : ""),
|
|
(gquotaondisk ? " grpquota" : ""));
|
|
return XFS_ERROR(EPERM);
|
|
}
|
|
|
|
if (XFS_IS_QUOTA_ON(mp) || quotaondisk) {
|
|
/*
|
|
* Call mount_quotas at this point only if we won't have to do
|
|
* a quotacheck.
|
|
*/
|
|
if (quotaondisk && !XFS_QM_NEED_QUOTACHECK(mp)) {
|
|
/*
|
|
* If an error occurred, qm_mount_quotas code
|
|
* has already disabled quotas. So, just finish
|
|
* mounting, and get on with the boring life
|
|
* without disk quotas.
|
|
*/
|
|
xfs_qm_mount_quotas(mp);
|
|
} else {
|
|
/*
|
|
* Clear the quota flags, but remember them. This
|
|
* is so that the quota code doesn't get invoked
|
|
* before we're ready. This can happen when an
|
|
* inode goes inactive and wants to free blocks,
|
|
* or via xfs_log_mount_finish.
|
|
*/
|
|
*needquotamount = B_TRUE;
|
|
*quotaflags = mp->m_qflags;
|
|
mp->m_qflags = 0;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void __init
|
|
xfs_qm_init(void)
|
|
{
|
|
printk(KERN_INFO "SGI XFS Quota Management subsystem\n");
|
|
mutex_init(&xfs_Gqm_lock);
|
|
xfs_qm_init_procfs();
|
|
}
|
|
|
|
void __exit
|
|
xfs_qm_exit(void)
|
|
{
|
|
xfs_qm_cleanup_procfs();
|
|
if (qm_dqzone)
|
|
kmem_zone_destroy(qm_dqzone);
|
|
if (qm_dqtrxzone)
|
|
kmem_zone_destroy(qm_dqtrxzone);
|
|
}
|