2 * Copyright (c) 2000-2006 Silicon Graphics, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 #include "xfs_trans.h"
27 #include "xfs_alloc.h"
28 #include "xfs_quota.h"
29 #include "xfs_mount.h"
30 #include "xfs_bmap_btree.h"
31 #include "xfs_alloc_btree.h"
32 #include "xfs_ialloc_btree.h"
33 #include "xfs_dir2_sf.h"
34 #include "xfs_attr_sf.h"
35 #include "xfs_dinode.h"
36 #include "xfs_inode.h"
37 #include "xfs_ialloc.h"
38 #include "xfs_itable.h"
39 #include "xfs_btree.h"
41 #include "xfs_rtalloc.h"
42 #include "xfs_error.h"
45 #include "xfs_buf_item.h"
50 xfs_fill_statvfs_from_dquot(
51 struct kstatfs *statp,
56 limit = dp->d_blk_softlimit ?
57 be64_to_cpu(dp->d_blk_softlimit) :
58 be64_to_cpu(dp->d_blk_hardlimit);
59 if (limit && statp->f_blocks > limit) {
60 statp->f_blocks = limit;
61 statp->f_bfree = statp->f_bavail =
62 (statp->f_blocks > be64_to_cpu(dp->d_bcount)) ?
63 (statp->f_blocks - be64_to_cpu(dp->d_bcount)) : 0;
66 limit = dp->d_ino_softlimit ?
67 be64_to_cpu(dp->d_ino_softlimit) :
68 be64_to_cpu(dp->d_ino_hardlimit);
69 if (limit && statp->f_files > limit) {
70 statp->f_files = limit;
72 (statp->f_files > be64_to_cpu(dp->d_icount)) ?
73 (statp->f_ffree - be64_to_cpu(dp->d_icount)) : 0;
79 * Directory tree accounting is implemented using project quotas, where
80 * the project identifier is inherited from parent directories.
81 * A statvfs (df, etc.) of a directory that is using project quota should
82 * return a statvfs of the project, not the entire filesystem.
83 * This makes such trees appear as if they are filesystems in themselves.
88 struct kstatfs *statp)
90 xfs_mount_t *mp = ip->i_mount;
93 if (!xfs_qm_dqget(mp, NULL, ip->i_d.di_projid, XFS_DQ_PROJ, 0, &dqp)) {
94 xfs_fill_statvfs_from_dquot(statp, &dqp->q_core);
102 uint *needquotamount,
106 uint uquotaondisk = 0, gquotaondisk = 0, pquotaondisk = 0;
108 quotaondisk = xfs_sb_version_hasquota(&mp->m_sb) &&
109 (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_ACCT);
112 uquotaondisk = mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT;
113 pquotaondisk = mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT;
114 gquotaondisk = mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT;
118 * If the device itself is read-only, we can't allow
119 * the user to change the state of quota on the mount -
120 * this would generate a transaction on the ro device,
121 * which would lead to an I/O error and shutdown
124 if (((uquotaondisk && !XFS_IS_UQUOTA_ON(mp)) ||
125 (!uquotaondisk && XFS_IS_UQUOTA_ON(mp)) ||
126 (pquotaondisk && !XFS_IS_PQUOTA_ON(mp)) ||
127 (!pquotaondisk && XFS_IS_PQUOTA_ON(mp)) ||
128 (gquotaondisk && !XFS_IS_GQUOTA_ON(mp)) ||
129 (!gquotaondisk && XFS_IS_OQUOTA_ON(mp))) &&
130 xfs_dev_is_read_only(mp, "changing quota state")) {
132 "XFS: please mount with%s%s%s%s.",
133 (!quotaondisk ? "out quota" : ""),
134 (uquotaondisk ? " usrquota" : ""),
135 (pquotaondisk ? " prjquota" : ""),
136 (gquotaondisk ? " grpquota" : ""));
137 return XFS_ERROR(EPERM);
140 if (XFS_IS_QUOTA_ON(mp) || quotaondisk) {
142 * Call mount_quotas at this point only if we won't have to do
145 if (quotaondisk && !XFS_QM_NEED_QUOTACHECK(mp)) {
147 * If an error occured, qm_mount_quotas code
148 * has already disabled quotas. So, just finish
149 * mounting, and get on with the boring life
150 * without disk quotas.
152 xfs_qm_mount_quotas(mp);
155 * Clear the quota flags, but remember them. This
156 * is so that the quota code doesn't get invoked
157 * before we're ready. This can happen when an
158 * inode goes inactive and wants to free blocks,
159 * or via xfs_log_mount_finish.
161 *needquotamount = B_TRUE;
162 *quotaflags = mp->m_qflags;
173 printk(KERN_INFO "SGI XFS Quota Management subsystem\n");
174 mutex_init(&xfs_Gqm_lock);
175 xfs_qm_init_procfs();
181 xfs_qm_cleanup_procfs();
183 kmem_zone_destroy(qm_dqzone);
185 kmem_zone_destroy(qm_dqtrxzone);