Commit | Line | Data |
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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" | |
a844f451 | 20 | #include "xfs_bit.h" |
1da177e4 | 21 | #include "xfs_log.h" |
a844f451 | 22 | #include "xfs_inum.h" |
1da177e4 LT |
23 | #include "xfs_trans.h" |
24 | #include "xfs_sb.h" | |
a844f451 | 25 | #include "xfs_ag.h" |
1da177e4 LT |
26 | #include "xfs_dir2.h" |
27 | #include "xfs_alloc.h" | |
28 | #include "xfs_dmapi.h" | |
29 | #include "xfs_quota.h" | |
30 | #include "xfs_mount.h" | |
1da177e4 | 31 | #include "xfs_bmap_btree.h" |
a844f451 | 32 | #include "xfs_alloc_btree.h" |
1da177e4 | 33 | #include "xfs_ialloc_btree.h" |
1da177e4 | 34 | #include "xfs_dir2_sf.h" |
a844f451 | 35 | #include "xfs_attr_sf.h" |
1da177e4 LT |
36 | #include "xfs_dinode.h" |
37 | #include "xfs_inode.h" | |
a844f451 NS |
38 | #include "xfs_ialloc.h" |
39 | #include "xfs_itable.h" | |
40 | #include "xfs_btree.h" | |
1da177e4 | 41 | #include "xfs_bmap.h" |
1da177e4 LT |
42 | #include "xfs_rtalloc.h" |
43 | #include "xfs_error.h" | |
1da177e4 | 44 | #include "xfs_rw.h" |
1da177e4 LT |
45 | #include "xfs_attr.h" |
46 | #include "xfs_buf_item.h" | |
1da177e4 LT |
47 | #include "xfs_qm.h" |
48 | ||
1da177e4 | 49 | |
b09cc771 CH |
50 | STATIC void |
51 | xfs_fill_statvfs_from_dquot( | |
00dd4029 | 52 | struct kstatfs *statp, |
b09cc771 | 53 | xfs_disk_dquot_t *dp) |
932f2c32 | 54 | { |
932f2c32 | 55 | __uint64_t limit; |
932f2c32 | 56 | |
2a293b7d CH |
57 | limit = dp->d_blk_softlimit ? |
58 | be64_to_cpu(dp->d_blk_softlimit) : | |
59 | be64_to_cpu(dp->d_blk_hardlimit); | |
932f2c32 NS |
60 | if (limit && statp->f_blocks > limit) { |
61 | statp->f_blocks = limit; | |
2a293b7d CH |
62 | statp->f_bfree = |
63 | (statp->f_blocks > be64_to_cpu(dp->d_bcount)) ? | |
64 | (statp->f_blocks - be64_to_cpu(dp->d_bcount)) : 0; | |
932f2c32 | 65 | } |
2a293b7d CH |
66 | |
67 | limit = dp->d_ino_softlimit ? | |
68 | be64_to_cpu(dp->d_ino_softlimit) : | |
69 | be64_to_cpu(dp->d_ino_hardlimit); | |
932f2c32 NS |
70 | if (limit && statp->f_files > limit) { |
71 | statp->f_files = limit; | |
2a293b7d CH |
72 | statp->f_ffree = |
73 | (statp->f_files > be64_to_cpu(dp->d_icount)) ? | |
74 | (statp->f_ffree - be64_to_cpu(dp->d_icount)) : 0; | |
932f2c32 | 75 | } |
932f2c32 NS |
76 | } |
77 | ||
b09cc771 CH |
78 | |
79 | /* | |
80 | * Directory tree accounting is implemented using project quotas, where | |
81 | * the project identifier is inherited from parent directories. | |
82 | * A statvfs (df, etc.) of a directory that is using project quota should | |
83 | * return a statvfs of the project, not the entire filesystem. | |
84 | * This makes such trees appear as if they are filesystems in themselves. | |
85 | */ | |
7d095257 | 86 | void |
b09cc771 CH |
87 | xfs_qm_statvfs( |
88 | xfs_inode_t *ip, | |
00dd4029 | 89 | struct kstatfs *statp) |
1da177e4 | 90 | { |
b09cc771 CH |
91 | xfs_mount_t *mp = ip->i_mount; |
92 | xfs_dquot_t *dqp; | |
1da177e4 | 93 | |
b09cc771 | 94 | if (!xfs_qm_dqget(mp, NULL, ip->i_d.di_projid, XFS_DQ_PROJ, 0, &dqp)) { |
7d095257 | 95 | xfs_fill_statvfs_from_dquot(statp, &dqp->q_core); |
b09cc771 | 96 | xfs_qm_dqput(dqp); |
1da177e4 | 97 | } |
1da177e4 LT |
98 | } |
99 | ||
7d095257 | 100 | int |
1da177e4 LT |
101 | xfs_qm_newmount( |
102 | xfs_mount_t *mp, | |
103 | uint *needquotamount, | |
104 | uint *quotaflags) | |
105 | { | |
106 | uint quotaondisk; | |
c8ad20ff | 107 | uint uquotaondisk = 0, gquotaondisk = 0, pquotaondisk = 0; |
1da177e4 | 108 | |
62118709 | 109 | quotaondisk = xfs_sb_version_hasquota(&mp->m_sb) && |
c8ad20ff | 110 | (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_ACCT); |
1da177e4 LT |
111 | |
112 | if (quotaondisk) { | |
113 | uquotaondisk = mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT; | |
c8ad20ff | 114 | pquotaondisk = mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT; |
1da177e4 LT |
115 | gquotaondisk = mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT; |
116 | } | |
117 | ||
118 | /* | |
119 | * If the device itself is read-only, we can't allow | |
120 | * the user to change the state of quota on the mount - | |
121 | * this would generate a transaction on the ro device, | |
122 | * which would lead to an I/O error and shutdown | |
123 | */ | |
124 | ||
125 | if (((uquotaondisk && !XFS_IS_UQUOTA_ON(mp)) || | |
126 | (!uquotaondisk && XFS_IS_UQUOTA_ON(mp)) || | |
c8ad20ff NS |
127 | (pquotaondisk && !XFS_IS_PQUOTA_ON(mp)) || |
128 | (!pquotaondisk && XFS_IS_PQUOTA_ON(mp)) || | |
1da177e4 | 129 | (gquotaondisk && !XFS_IS_GQUOTA_ON(mp)) || |
c8ad20ff | 130 | (!gquotaondisk && XFS_IS_OQUOTA_ON(mp))) && |
1da177e4 LT |
131 | xfs_dev_is_read_only(mp, "changing quota state")) { |
132 | cmn_err(CE_WARN, | |
c8ad20ff | 133 | "XFS: please mount with%s%s%s%s.", |
1da177e4 LT |
134 | (!quotaondisk ? "out quota" : ""), |
135 | (uquotaondisk ? " usrquota" : ""), | |
c8ad20ff | 136 | (pquotaondisk ? " prjquota" : ""), |
1da177e4 LT |
137 | (gquotaondisk ? " grpquota" : "")); |
138 | return XFS_ERROR(EPERM); | |
139 | } | |
140 | ||
141 | if (XFS_IS_QUOTA_ON(mp) || quotaondisk) { | |
142 | /* | |
143 | * Call mount_quotas at this point only if we won't have to do | |
144 | * a quotacheck. | |
145 | */ | |
146 | if (quotaondisk && !XFS_QM_NEED_QUOTACHECK(mp)) { | |
147 | /* | |
148 | * If an error occured, qm_mount_quotas code | |
149 | * has already disabled quotas. So, just finish | |
150 | * mounting, and get on with the boring life | |
151 | * without disk quotas. | |
152 | */ | |
4249023a | 153 | xfs_qm_mount_quotas(mp); |
1da177e4 LT |
154 | } else { |
155 | /* | |
156 | * Clear the quota flags, but remember them. This | |
157 | * is so that the quota code doesn't get invoked | |
158 | * before we're ready. This can happen when an | |
159 | * inode goes inactive and wants to free blocks, | |
160 | * or via xfs_log_mount_finish. | |
161 | */ | |
162 | *needquotamount = B_TRUE; | |
163 | *quotaflags = mp->m_qflags; | |
164 | mp->m_qflags = 0; | |
165 | } | |
166 | } | |
167 | ||
168 | return 0; | |
169 | } | |
170 | ||
1da177e4 LT |
171 | void __init |
172 | xfs_qm_init(void) | |
173 | { | |
b09cc771 | 174 | printk(KERN_INFO "SGI XFS Quota Management subsystem\n"); |
794ee1ba | 175 | mutex_init(&xfs_Gqm_lock); |
1da177e4 LT |
176 | xfs_qm_init_procfs(); |
177 | } | |
178 | ||
179 | void __exit | |
180 | xfs_qm_exit(void) | |
181 | { | |
1da177e4 LT |
182 | xfs_qm_cleanup_procfs(); |
183 | if (qm_dqzone) | |
3758dee9 | 184 | kmem_zone_destroy(qm_dqzone); |
1da177e4 | 185 | if (qm_dqtrxzone) |
3758dee9 | 186 | kmem_zone_destroy(qm_dqtrxzone); |
1da177e4 | 187 | } |