Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
932f2c32 | 2 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. |
4ce3121f | 3 | * All Rights Reserved. |
1da177e4 | 4 | * |
4ce3121f NS |
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 | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
4ce3121f NS |
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. | |
1da177e4 | 13 | * |
4ce3121f NS |
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 | |
1da177e4 | 17 | */ |
1da177e4 LT |
18 | #include "xfs.h" |
19 | #include "xfs_fs.h" | |
6ca1c906 | 20 | #include "xfs_format.h" |
239880ef DC |
21 | #include "xfs_log_format.h" |
22 | #include "xfs_trans_resv.h" | |
1da177e4 | 23 | #include "xfs_sb.h" |
a844f451 | 24 | #include "xfs_ag.h" |
1da177e4 LT |
25 | #include "xfs_quota.h" |
26 | #include "xfs_mount.h" | |
1da177e4 | 27 | #include "xfs_inode.h" |
1da177e4 | 28 | #include "xfs_error.h" |
239880ef | 29 | #include "xfs_trans.h" |
1da177e4 LT |
30 | #include "xfs_qm.h" |
31 | ||
1da177e4 | 32 | |
b09cc771 CH |
33 | STATIC void |
34 | xfs_fill_statvfs_from_dquot( | |
00dd4029 | 35 | struct kstatfs *statp, |
89605011 | 36 | struct xfs_dquot *dqp) |
932f2c32 | 37 | { |
932f2c32 | 38 | __uint64_t limit; |
932f2c32 | 39 | |
89605011 CH |
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); | |
932f2c32 NS |
43 | if (limit && statp->f_blocks > limit) { |
44 | statp->f_blocks = limit; | |
9b00f307 | 45 | statp->f_bfree = statp->f_bavail = |
89605011 CH |
46 | (statp->f_blocks > dqp->q_res_bcount) ? |
47 | (statp->f_blocks - dqp->q_res_bcount) : 0; | |
932f2c32 | 48 | } |
2a293b7d | 49 | |
89605011 CH |
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); | |
932f2c32 NS |
53 | if (limit && statp->f_files > limit) { |
54 | statp->f_files = limit; | |
2a293b7d | 55 | statp->f_ffree = |
89605011 CH |
56 | (statp->f_files > dqp->q_res_icount) ? |
57 | (statp->f_ffree - dqp->q_res_icount) : 0; | |
932f2c32 | 58 | } |
932f2c32 NS |
59 | } |
60 | ||
b09cc771 CH |
61 | |
62 | /* | |
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. | |
68 | */ | |
7d095257 | 69 | void |
b09cc771 CH |
70 | xfs_qm_statvfs( |
71 | xfs_inode_t *ip, | |
00dd4029 | 72 | struct kstatfs *statp) |
1da177e4 | 73 | { |
b09cc771 CH |
74 | xfs_mount_t *mp = ip->i_mount; |
75 | xfs_dquot_t *dqp; | |
1da177e4 | 76 | |
6743099c | 77 | if (!xfs_qm_dqget(mp, NULL, xfs_get_projid(ip), XFS_DQ_PROJ, 0, &dqp)) { |
89605011 | 78 | xfs_fill_statvfs_from_dquot(statp, dqp); |
b09cc771 | 79 | xfs_qm_dqput(dqp); |
1da177e4 | 80 | } |
1da177e4 LT |
81 | } |
82 | ||
7d095257 | 83 | int |
1da177e4 LT |
84 | xfs_qm_newmount( |
85 | xfs_mount_t *mp, | |
86 | uint *needquotamount, | |
87 | uint *quotaflags) | |
88 | { | |
89 | uint quotaondisk; | |
c8ad20ff | 90 | uint uquotaondisk = 0, gquotaondisk = 0, pquotaondisk = 0; |
1da177e4 | 91 | |
62118709 | 92 | quotaondisk = xfs_sb_version_hasquota(&mp->m_sb) && |
c8ad20ff | 93 | (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_ACCT); |
1da177e4 LT |
94 | |
95 | if (quotaondisk) { | |
96 | uquotaondisk = mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT; | |
c8ad20ff | 97 | pquotaondisk = mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT; |
1da177e4 LT |
98 | gquotaondisk = mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT; |
99 | } | |
100 | ||
101 | /* | |
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 | |
106 | */ | |
107 | ||
108 | if (((uquotaondisk && !XFS_IS_UQUOTA_ON(mp)) || | |
109 | (!uquotaondisk && XFS_IS_UQUOTA_ON(mp)) || | |
110 | (gquotaondisk && !XFS_IS_GQUOTA_ON(mp)) || | |
92f8ff73 CS |
111 | (!gquotaondisk && XFS_IS_GQUOTA_ON(mp)) || |
112 | (pquotaondisk && !XFS_IS_PQUOTA_ON(mp)) || | |
113 | (!pquotaondisk && XFS_IS_PQUOTA_ON(mp))) && | |
1da177e4 | 114 | xfs_dev_is_read_only(mp, "changing quota state")) { |
0b932ccc | 115 | xfs_warn(mp, "please mount with%s%s%s%s.", |
1da177e4 LT |
116 | (!quotaondisk ? "out quota" : ""), |
117 | (uquotaondisk ? " usrquota" : ""), | |
92f8ff73 CS |
118 | (gquotaondisk ? " grpquota" : ""), |
119 | (pquotaondisk ? " prjquota" : "")); | |
2451337d | 120 | return -EPERM; |
1da177e4 LT |
121 | } |
122 | ||
123 | if (XFS_IS_QUOTA_ON(mp) || quotaondisk) { | |
124 | /* | |
125 | * Call mount_quotas at this point only if we won't have to do | |
126 | * a quotacheck. | |
127 | */ | |
128 | if (quotaondisk && !XFS_QM_NEED_QUOTACHECK(mp)) { | |
129 | /* | |
25985edc | 130 | * If an error occurred, qm_mount_quotas code |
1da177e4 LT |
131 | * has already disabled quotas. So, just finish |
132 | * mounting, and get on with the boring life | |
133 | * without disk quotas. | |
134 | */ | |
4249023a | 135 | xfs_qm_mount_quotas(mp); |
1da177e4 LT |
136 | } else { |
137 | /* | |
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. | |
143 | */ | |
667a9291 | 144 | *needquotamount = true; |
1da177e4 LT |
145 | *quotaflags = mp->m_qflags; |
146 | mp->m_qflags = 0; | |
147 | } | |
148 | } | |
149 | ||
150 | return 0; | |
151 | } |