+++ /dev/null
-/*
- * 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);
-}
git.openpandora.org / pandora-kernel.git / blobdiff