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 LT |
44 | #include "xfs_rw.h" |
45 | #include "xfs_acl.h" | |
1da177e4 LT |
46 | #include "xfs_attr.h" |
47 | #include "xfs_buf_item.h" | |
1da177e4 LT |
48 | #include "xfs_qm.h" |
49 | ||
1da177e4 | 50 | |
b09cc771 CH |
51 | STATIC void |
52 | xfs_fill_statvfs_from_dquot( | |
00dd4029 | 53 | struct kstatfs *statp, |
b09cc771 | 54 | xfs_disk_dquot_t *dp) |
932f2c32 | 55 | { |
932f2c32 | 56 | __uint64_t limit; |
932f2c32 | 57 | |
2a293b7d CH |
58 | limit = dp->d_blk_softlimit ? |
59 | be64_to_cpu(dp->d_blk_softlimit) : | |
60 | be64_to_cpu(dp->d_blk_hardlimit); | |
932f2c32 NS |
61 | if (limit && statp->f_blocks > limit) { |
62 | statp->f_blocks = limit; | |
2a293b7d CH |
63 | statp->f_bfree = |
64 | (statp->f_blocks > be64_to_cpu(dp->d_bcount)) ? | |
65 | (statp->f_blocks - be64_to_cpu(dp->d_bcount)) : 0; | |
932f2c32 | 66 | } |
2a293b7d CH |
67 | |
68 | limit = dp->d_ino_softlimit ? | |
69 | be64_to_cpu(dp->d_ino_softlimit) : | |
70 | be64_to_cpu(dp->d_ino_hardlimit); | |
932f2c32 NS |
71 | if (limit && statp->f_files > limit) { |
72 | statp->f_files = limit; | |
2a293b7d CH |
73 | statp->f_ffree = |
74 | (statp->f_files > be64_to_cpu(dp->d_icount)) ? | |
75 | (statp->f_ffree - be64_to_cpu(dp->d_icount)) : 0; | |
932f2c32 | 76 | } |
932f2c32 NS |
77 | } |
78 | ||
b09cc771 CH |
79 | |
80 | /* | |
81 | * Directory tree accounting is implemented using project quotas, where | |
82 | * the project identifier is inherited from parent directories. | |
83 | * A statvfs (df, etc.) of a directory that is using project quota should | |
84 | * return a statvfs of the project, not the entire filesystem. | |
85 | * This makes such trees appear as if they are filesystems in themselves. | |
86 | */ | |
87 | STATIC void | |
88 | xfs_qm_statvfs( | |
89 | xfs_inode_t *ip, | |
00dd4029 | 90 | struct kstatfs *statp) |
1da177e4 | 91 | { |
b09cc771 CH |
92 | xfs_mount_t *mp = ip->i_mount; |
93 | xfs_dquot_t *dqp; | |
1da177e4 | 94 | |
b09cc771 CH |
95 | if (!(ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) || |
96 | !((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))) == | |
97 | (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD)) | |
98 | return; | |
99 | ||
100 | if (!xfs_qm_dqget(mp, NULL, ip->i_d.di_projid, XFS_DQ_PROJ, 0, &dqp)) { | |
101 | xfs_disk_dquot_t *dp = &dqp->q_core; | |
102 | ||
103 | xfs_fill_statvfs_from_dquot(statp, dp); | |
104 | xfs_qm_dqput(dqp); | |
1da177e4 | 105 | } |
1da177e4 LT |
106 | } |
107 | ||
1da177e4 LT |
108 | STATIC int |
109 | xfs_qm_newmount( | |
110 | xfs_mount_t *mp, | |
111 | uint *needquotamount, | |
112 | uint *quotaflags) | |
113 | { | |
114 | uint quotaondisk; | |
c8ad20ff | 115 | uint uquotaondisk = 0, gquotaondisk = 0, pquotaondisk = 0; |
1da177e4 LT |
116 | |
117 | *quotaflags = 0; | |
118 | *needquotamount = B_FALSE; | |
119 | ||
62118709 | 120 | quotaondisk = xfs_sb_version_hasquota(&mp->m_sb) && |
c8ad20ff | 121 | (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_ACCT); |
1da177e4 LT |
122 | |
123 | if (quotaondisk) { | |
124 | uquotaondisk = mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT; | |
c8ad20ff | 125 | pquotaondisk = mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT; |
1da177e4 LT |
126 | gquotaondisk = mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT; |
127 | } | |
128 | ||
129 | /* | |
130 | * If the device itself is read-only, we can't allow | |
131 | * the user to change the state of quota on the mount - | |
132 | * this would generate a transaction on the ro device, | |
133 | * which would lead to an I/O error and shutdown | |
134 | */ | |
135 | ||
136 | if (((uquotaondisk && !XFS_IS_UQUOTA_ON(mp)) || | |
137 | (!uquotaondisk && XFS_IS_UQUOTA_ON(mp)) || | |
c8ad20ff NS |
138 | (pquotaondisk && !XFS_IS_PQUOTA_ON(mp)) || |
139 | (!pquotaondisk && XFS_IS_PQUOTA_ON(mp)) || | |
1da177e4 | 140 | (gquotaondisk && !XFS_IS_GQUOTA_ON(mp)) || |
c8ad20ff | 141 | (!gquotaondisk && XFS_IS_OQUOTA_ON(mp))) && |
1da177e4 LT |
142 | xfs_dev_is_read_only(mp, "changing quota state")) { |
143 | cmn_err(CE_WARN, | |
c8ad20ff | 144 | "XFS: please mount with%s%s%s%s.", |
1da177e4 LT |
145 | (!quotaondisk ? "out quota" : ""), |
146 | (uquotaondisk ? " usrquota" : ""), | |
c8ad20ff | 147 | (pquotaondisk ? " prjquota" : ""), |
1da177e4 LT |
148 | (gquotaondisk ? " grpquota" : "")); |
149 | return XFS_ERROR(EPERM); | |
150 | } | |
151 | ||
152 | if (XFS_IS_QUOTA_ON(mp) || quotaondisk) { | |
153 | /* | |
154 | * Call mount_quotas at this point only if we won't have to do | |
155 | * a quotacheck. | |
156 | */ | |
157 | if (quotaondisk && !XFS_QM_NEED_QUOTACHECK(mp)) { | |
158 | /* | |
159 | * If an error occured, qm_mount_quotas code | |
160 | * has already disabled quotas. So, just finish | |
161 | * mounting, and get on with the boring life | |
162 | * without disk quotas. | |
163 | */ | |
4249023a | 164 | xfs_qm_mount_quotas(mp); |
1da177e4 LT |
165 | } else { |
166 | /* | |
167 | * Clear the quota flags, but remember them. This | |
168 | * is so that the quota code doesn't get invoked | |
169 | * before we're ready. This can happen when an | |
170 | * inode goes inactive and wants to free blocks, | |
171 | * or via xfs_log_mount_finish. | |
172 | */ | |
173 | *needquotamount = B_TRUE; | |
174 | *quotaflags = mp->m_qflags; | |
175 | mp->m_qflags = 0; | |
176 | } | |
177 | } | |
178 | ||
179 | return 0; | |
180 | } | |
181 | ||
182 | STATIC int | |
183 | xfs_qm_endmount( | |
184 | xfs_mount_t *mp, | |
185 | uint needquotamount, | |
4249023a | 186 | uint quotaflags) |
1da177e4 LT |
187 | { |
188 | if (needquotamount) { | |
189 | ASSERT(mp->m_qflags == 0); | |
190 | mp->m_qflags = quotaflags; | |
4249023a | 191 | xfs_qm_mount_quotas(mp); |
1da177e4 LT |
192 | } |
193 | ||
194 | #if defined(DEBUG) && defined(XFS_LOUD_RECOVERY) | |
195 | if (! (XFS_IS_QUOTA_ON(mp))) | |
196 | xfs_fs_cmn_err(CE_NOTE, mp, "Disk quotas not turned on"); | |
197 | else | |
198 | xfs_fs_cmn_err(CE_NOTE, mp, "Disk quotas turned on"); | |
199 | #endif | |
200 | ||
201 | #ifdef QUOTADEBUG | |
202 | if (XFS_IS_QUOTA_ON(mp) && xfs_qm_internalqcheck(mp)) | |
203 | cmn_err(CE_WARN, "XFS: mount internalqcheck failed"); | |
204 | #endif | |
205 | ||
206 | return 0; | |
207 | } | |
208 | ||
209 | STATIC void | |
210 | xfs_qm_dqrele_null( | |
211 | xfs_dquot_t *dq) | |
212 | { | |
213 | /* | |
214 | * Called from XFS, where we always check first for a NULL dquot. | |
215 | */ | |
216 | if (!dq) | |
217 | return; | |
218 | xfs_qm_dqrele(dq); | |
219 | } | |
220 | ||
221 | ||
b09cc771 | 222 | struct xfs_qmops xfs_qmcore_xfs = { |
1da177e4 LT |
223 | .xfs_qminit = xfs_qm_newmount, |
224 | .xfs_qmdone = xfs_qm_unmount_quotadestroy, | |
225 | .xfs_qmmount = xfs_qm_endmount, | |
226 | .xfs_qmunmount = xfs_qm_unmount_quotas, | |
227 | .xfs_dqrele = xfs_qm_dqrele_null, | |
228 | .xfs_dqattach = xfs_qm_dqattach, | |
229 | .xfs_dqdetach = xfs_qm_dqdetach, | |
230 | .xfs_dqpurgeall = xfs_qm_dqpurge_all, | |
231 | .xfs_dqvopalloc = xfs_qm_vop_dqalloc, | |
232 | .xfs_dqvopcreate = xfs_qm_vop_dqattach_and_dqmod_newinode, | |
233 | .xfs_dqvoprename = xfs_qm_vop_rename_dqattach, | |
234 | .xfs_dqvopchown = xfs_qm_vop_chown, | |
235 | .xfs_dqvopchownresv = xfs_qm_vop_chown_reserve, | |
b09cc771 CH |
236 | .xfs_dqstatvfs = xfs_qm_statvfs, |
237 | .xfs_dqsync = xfs_qm_sync, | |
1da177e4 LT |
238 | .xfs_dqtrxops = &xfs_trans_dquot_ops, |
239 | }; | |
b09cc771 | 240 | EXPORT_SYMBOL(xfs_qmcore_xfs); |
1da177e4 LT |
241 | |
242 | void __init | |
243 | xfs_qm_init(void) | |
244 | { | |
b09cc771 | 245 | printk(KERN_INFO "SGI XFS Quota Management subsystem\n"); |
794ee1ba | 246 | mutex_init(&xfs_Gqm_lock); |
1da177e4 LT |
247 | xfs_qm_init_procfs(); |
248 | } | |
249 | ||
250 | void __exit | |
251 | xfs_qm_exit(void) | |
252 | { | |
1da177e4 LT |
253 | xfs_qm_cleanup_procfs(); |
254 | if (qm_dqzone) | |
3758dee9 | 255 | kmem_zone_destroy(qm_dqzone); |
1da177e4 | 256 | if (qm_dqtrxzone) |
3758dee9 | 257 | kmem_zone_destroy(qm_dqtrxzone); |
1da177e4 | 258 | } |