]>
git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - fs/xfs/xfs_qm_bhv.c
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
20 #include "xfs_format.h"
21 #include "xfs_log_format.h"
22 #include "xfs_trans_resv.h"
25 #include "xfs_quota.h"
26 #include "xfs_mount.h"
27 #include "xfs_inode.h"
28 #include "xfs_error.h"
29 #include "xfs_trans.h"
34 xfs_fill_statvfs_from_dquot(
35 struct kstatfs
*statp
,
36 struct xfs_dquot
*dqp
)
40 limit
= dqp
->q_core
.d_blk_softlimit
?
41 be64_to_cpu(dqp
->q_core
.d_blk_softlimit
) :
42 be64_to_cpu(dqp
->q_core
.d_blk_hardlimit
);
43 if (limit
&& statp
->f_blocks
> limit
) {
44 statp
->f_blocks
= limit
;
45 statp
->f_bfree
= statp
->f_bavail
=
46 (statp
->f_blocks
> dqp
->q_res_bcount
) ?
47 (statp
->f_blocks
- dqp
->q_res_bcount
) : 0;
50 limit
= dqp
->q_core
.d_ino_softlimit
?
51 be64_to_cpu(dqp
->q_core
.d_ino_softlimit
) :
52 be64_to_cpu(dqp
->q_core
.d_ino_hardlimit
);
53 if (limit
&& statp
->f_files
> limit
) {
54 statp
->f_files
= limit
;
56 (statp
->f_files
> dqp
->q_res_icount
) ?
57 (statp
->f_ffree
- dqp
->q_res_icount
) : 0;
63 * Directory tree accounting is implemented using project quotas, where
64 * the project identifier is inherited from parent directories.
65 * A statvfs (df, etc.) of a directory that is using project quota should
66 * return a statvfs of the project, not the entire filesystem.
67 * This makes such trees appear as if they are filesystems in themselves.
72 struct kstatfs
*statp
)
74 xfs_mount_t
*mp
= ip
->i_mount
;
77 if (!xfs_qm_dqget(mp
, NULL
, xfs_get_projid(ip
), XFS_DQ_PROJ
, 0, &dqp
)) {
78 xfs_fill_statvfs_from_dquot(statp
, dqp
);
90 uint uquotaondisk
= 0, gquotaondisk
= 0, pquotaondisk
= 0;
92 quotaondisk
= xfs_sb_version_hasquota(&mp
->m_sb
) &&
93 (mp
->m_sb
.sb_qflags
& XFS_ALL_QUOTA_ACCT
);
96 uquotaondisk
= mp
->m_sb
.sb_qflags
& XFS_UQUOTA_ACCT
;
97 pquotaondisk
= mp
->m_sb
.sb_qflags
& XFS_PQUOTA_ACCT
;
98 gquotaondisk
= mp
->m_sb
.sb_qflags
& XFS_GQUOTA_ACCT
;
102 * If the device itself is read-only, we can't allow
103 * the user to change the state of quota on the mount -
104 * this would generate a transaction on the ro device,
105 * which would lead to an I/O error and shutdown
108 if (((uquotaondisk
&& !XFS_IS_UQUOTA_ON(mp
)) ||
109 (!uquotaondisk
&& XFS_IS_UQUOTA_ON(mp
)) ||
110 (gquotaondisk
&& !XFS_IS_GQUOTA_ON(mp
)) ||
111 (!gquotaondisk
&& XFS_IS_GQUOTA_ON(mp
)) ||
112 (pquotaondisk
&& !XFS_IS_PQUOTA_ON(mp
)) ||
113 (!pquotaondisk
&& XFS_IS_PQUOTA_ON(mp
))) &&
114 xfs_dev_is_read_only(mp
, "changing quota state")) {
115 xfs_warn(mp
, "please mount with%s%s%s%s.",
116 (!quotaondisk
? "out quota" : ""),
117 (uquotaondisk
? " usrquota" : ""),
118 (gquotaondisk
? " grpquota" : ""),
119 (pquotaondisk
? " prjquota" : ""));
123 if (XFS_IS_QUOTA_ON(mp
) || quotaondisk
) {
125 * Call mount_quotas at this point only if we won't have to do
128 if (quotaondisk
&& !XFS_QM_NEED_QUOTACHECK(mp
)) {
130 * If an error occurred, qm_mount_quotas code
131 * has already disabled quotas. So, just finish
132 * mounting, and get on with the boring life
133 * without disk quotas.
135 xfs_qm_mount_quotas(mp
);
138 * Clear the quota flags, but remember them. This
139 * is so that the quota code doesn't get invoked
140 * before we're ready. This can happen when an
141 * inode goes inactive and wants to free blocks,
142 * or via xfs_log_mount_finish.
144 *needquotamount
= true;
145 *quotaflags
= mp
->m_qflags
;