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1da177e4 | 1 | /* |
4ce3121f NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
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 LT |
17 | */ |
18 | #ifndef __XFS_QM_H__ | |
19 | #define __XFS_QM_H__ | |
20 | ||
21 | #include "xfs_dquot_item.h" | |
22 | #include "xfs_dquot.h" | |
23 | #include "xfs_quota_priv.h" | |
24 | #include "xfs_qm_stats.h" | |
25 | ||
26 | struct xfs_qm; | |
27 | struct xfs_inode; | |
28 | ||
6b3f6b5b | 29 | extern uint ndquot; |
1da177e4 LT |
30 | extern mutex_t xfs_Gqm_lock; |
31 | extern struct xfs_qm *xfs_Gqm; | |
32 | extern kmem_zone_t *qm_dqzone; | |
33 | extern kmem_zone_t *qm_dqtrxzone; | |
34 | ||
35 | /* | |
36 | * Used in xfs_qm_sync called by xfs_sync to count the max times that it can | |
37 | * iterate over the mountpt's dquot list in one call. | |
38 | */ | |
39 | #define XFS_QM_SYNC_MAX_RESTARTS 7 | |
40 | ||
41 | /* | |
42 | * Ditto, for xfs_qm_dqreclaim_one. | |
43 | */ | |
44 | #define XFS_QM_RECLAIM_MAX_RESTARTS 4 | |
45 | ||
46 | /* | |
47 | * Ideal ratio of free to in use dquots. Quota manager makes an attempt | |
48 | * to keep this balance. | |
49 | */ | |
50 | #define XFS_QM_DQFREE_RATIO 2 | |
51 | ||
52 | /* | |
53 | * Dquot hashtable constants/threshold values. | |
54 | */ | |
6b3f6b5b NS |
55 | #define XFS_QM_HASHSIZE_LOW (NBPP / sizeof(xfs_dqhash_t)) |
56 | #define XFS_QM_HASHSIZE_HIGH ((NBPP * 4) / sizeof(xfs_dqhash_t)) | |
1da177e4 | 57 | |
1da177e4 LT |
58 | /* |
59 | * This defines the unit of allocation of dquots. | |
60 | * Currently, it is just one file system block, and a 4K blk contains 30 | |
61 | * (136 * 30 = 4080) dquots. It's probably not worth trying to make | |
62 | * this more dynamic. | |
63 | * XXXsup However, if this number is changed, we have to make sure that we don't | |
64 | * implicitly assume that we do allocations in chunks of a single filesystem | |
65 | * block in the dquot/xqm code. | |
66 | */ | |
67 | #define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1 | |
68 | /* | |
69 | * When doing a quotacheck, we log dquot clusters of this many FSBs at most | |
70 | * in a single transaction. We don't want to ask for too huge a log reservation. | |
71 | */ | |
72 | #define XFS_QM_MAX_DQCLUSTER_LOGSZ 3 | |
73 | ||
74 | typedef xfs_dqhash_t xfs_dqlist_t; | |
75 | /* | |
76 | * The freelist head. The first two fields match the first two in the | |
77 | * xfs_dquot_t structure (in xfs_dqmarker_t) | |
78 | */ | |
79 | typedef struct xfs_frlist { | |
80 | struct xfs_dquot *qh_next; | |
81 | struct xfs_dquot *qh_prev; | |
82 | mutex_t qh_lock; | |
83 | uint qh_version; | |
84 | uint qh_nelems; | |
85 | } xfs_frlist_t; | |
86 | ||
87 | /* | |
88 | * Quota Manager (global) structure. Lives only in core. | |
89 | */ | |
90 | typedef struct xfs_qm { | |
91 | xfs_dqlist_t *qm_usr_dqhtable;/* udquot hash table */ | |
92 | xfs_dqlist_t *qm_grp_dqhtable;/* gdquot hash table */ | |
93 | uint qm_dqhashmask; /* # buckets in dq hashtab - 1 */ | |
94 | xfs_frlist_t qm_dqfreelist; /* freelist of dquots */ | |
95 | atomic_t qm_totaldquots; /* total incore dquots */ | |
96 | uint qm_nrefs; /* file systems with quota on */ | |
97 | int qm_dqfree_ratio;/* ratio of free to inuse dquots */ | |
98 | kmem_zone_t *qm_dqzone; /* dquot mem-alloc zone */ | |
99 | kmem_zone_t *qm_dqtrxzone; /* t_dqinfo of transactions */ | |
100 | } xfs_qm_t; | |
101 | ||
102 | /* | |
103 | * Various quota information for individual filesystems. | |
104 | * The mount structure keeps a pointer to this. | |
105 | */ | |
106 | typedef struct xfs_quotainfo { | |
107 | xfs_inode_t *qi_uquotaip; /* user quota inode */ | |
108 | xfs_inode_t *qi_gquotaip; /* group quota inode */ | |
869b9060 | 109 | spinlock_t qi_pinlock; /* dquot pinning lock */ |
1da177e4 LT |
110 | xfs_dqlist_t qi_dqlist; /* all dquots in filesys */ |
111 | int qi_dqreclaims; /* a change here indicates | |
112 | a removal in the dqlist */ | |
113 | time_t qi_btimelimit; /* limit for blks timer */ | |
114 | time_t qi_itimelimit; /* limit for inodes timer */ | |
115 | time_t qi_rtbtimelimit;/* limit for rt blks timer */ | |
06d10dd9 NS |
116 | xfs_qwarncnt_t qi_bwarnlimit; /* limit for blks warnings */ |
117 | xfs_qwarncnt_t qi_iwarnlimit; /* limit for inodes warnings */ | |
118 | xfs_qwarncnt_t qi_rtbwarnlimit;/* limit for rt blks warnings */ | |
1da177e4 LT |
119 | mutex_t qi_quotaofflock;/* to serialize quotaoff */ |
120 | xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */ | |
121 | uint qi_dqperchunk; /* # ondisk dqs in above chunk */ | |
122 | xfs_qcnt_t qi_bhardlimit; /* default data blk hard limit */ | |
123 | xfs_qcnt_t qi_bsoftlimit; /* default data blk soft limit */ | |
124 | xfs_qcnt_t qi_ihardlimit; /* default inode count hard limit */ | |
125 | xfs_qcnt_t qi_isoftlimit; /* default inode count soft limit */ | |
126 | xfs_qcnt_t qi_rtbhardlimit;/* default realtime blk hard limit */ | |
127 | xfs_qcnt_t qi_rtbsoftlimit;/* default realtime blk soft limit */ | |
128 | } xfs_quotainfo_t; | |
129 | ||
130 | ||
131 | extern xfs_dqtrxops_t xfs_trans_dquot_ops; | |
132 | ||
133 | extern void xfs_trans_mod_dquot(xfs_trans_t *, xfs_dquot_t *, uint, long); | |
134 | extern int xfs_trans_reserve_quota_bydquots(xfs_trans_t *, xfs_mount_t *, | |
135 | xfs_dquot_t *, xfs_dquot_t *, long, long, uint); | |
136 | extern void xfs_trans_dqjoin(xfs_trans_t *, xfs_dquot_t *); | |
137 | extern void xfs_trans_log_dquot(xfs_trans_t *, xfs_dquot_t *); | |
138 | ||
139 | /* | |
140 | * We keep the usr and grp dquots separately so that locking will be easier | |
141 | * to do at commit time. All transactions that we know of at this point | |
142 | * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value. | |
143 | */ | |
144 | #define XFS_QM_TRANS_MAXDQS 2 | |
145 | typedef struct xfs_dquot_acct { | |
146 | xfs_dqtrx_t dqa_usrdquots[XFS_QM_TRANS_MAXDQS]; | |
147 | xfs_dqtrx_t dqa_grpdquots[XFS_QM_TRANS_MAXDQS]; | |
148 | } xfs_dquot_acct_t; | |
149 | ||
150 | /* | |
151 | * Users are allowed to have a usage exceeding their softlimit for | |
152 | * a period this long. | |
153 | */ | |
154 | #define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */ | |
155 | #define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */ | |
156 | #define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */ | |
157 | ||
158 | #define XFS_QM_BWARNLIMIT 5 | |
159 | #define XFS_QM_IWARNLIMIT 5 | |
06d10dd9 | 160 | #define XFS_QM_RTBWARNLIMIT 5 |
1da177e4 | 161 | |
794ee1ba | 162 | #define XFS_QM_LOCK(xqm) (mutex_lock(&xqm##_lock)) |
1da177e4 LT |
163 | #define XFS_QM_UNLOCK(xqm) (mutex_unlock(&xqm##_lock)) |
164 | #define XFS_QM_HOLD(xqm) ((xqm)->qm_nrefs++) | |
165 | #define XFS_QM_RELE(xqm) ((xqm)->qm_nrefs--) | |
166 | ||
1da177e4 LT |
167 | extern void xfs_qm_destroy_quotainfo(xfs_mount_t *); |
168 | extern int xfs_qm_mount_quotas(xfs_mount_t *, int); | |
1da177e4 LT |
169 | extern int xfs_qm_quotacheck(xfs_mount_t *); |
170 | extern void xfs_qm_unmount_quotadestroy(xfs_mount_t *); | |
171 | extern int xfs_qm_unmount_quotas(xfs_mount_t *); | |
172 | extern int xfs_qm_write_sb_changes(xfs_mount_t *, __int64_t); | |
b09cc771 | 173 | extern int xfs_qm_sync(xfs_mount_t *, int); |
1da177e4 LT |
174 | |
175 | /* dquot stuff */ | |
176 | extern boolean_t xfs_qm_dqalloc_incore(xfs_dquot_t **); | |
177 | extern int xfs_qm_dqattach(xfs_inode_t *, uint); | |
178 | extern void xfs_qm_dqdetach(xfs_inode_t *); | |
179 | extern int xfs_qm_dqpurge_all(xfs_mount_t *, uint); | |
180 | extern void xfs_qm_dqrele_all_inodes(xfs_mount_t *, uint); | |
181 | ||
182 | /* vop stuff */ | |
183 | extern int xfs_qm_vop_dqalloc(xfs_mount_t *, xfs_inode_t *, | |
c8ad20ff | 184 | uid_t, gid_t, prid_t, uint, |
1da177e4 LT |
185 | xfs_dquot_t **, xfs_dquot_t **); |
186 | extern void xfs_qm_vop_dqattach_and_dqmod_newinode( | |
187 | xfs_trans_t *, xfs_inode_t *, | |
188 | xfs_dquot_t *, xfs_dquot_t *); | |
189 | extern int xfs_qm_vop_rename_dqattach(xfs_inode_t **); | |
190 | extern xfs_dquot_t * xfs_qm_vop_chown(xfs_trans_t *, xfs_inode_t *, | |
191 | xfs_dquot_t **, xfs_dquot_t *); | |
192 | extern int xfs_qm_vop_chown_reserve(xfs_trans_t *, xfs_inode_t *, | |
193 | xfs_dquot_t *, xfs_dquot_t *, uint); | |
194 | ||
195 | /* list stuff */ | |
1da177e4 LT |
196 | extern void xfs_qm_freelist_append(xfs_frlist_t *, xfs_dquot_t *); |
197 | extern void xfs_qm_freelist_unlink(xfs_dquot_t *); | |
198 | extern int xfs_qm_freelist_lock_nowait(xfs_qm_t *); | |
1da177e4 LT |
199 | |
200 | /* system call interface */ | |
b09cc771 CH |
201 | extern int xfs_qm_quotactl(struct xfs_mount *, int, int, |
202 | xfs_caddr_t); | |
1da177e4 LT |
203 | |
204 | #ifdef DEBUG | |
205 | extern int xfs_qm_internalqcheck(xfs_mount_t *); | |
206 | #else | |
207 | #define xfs_qm_internalqcheck(mp) (0) | |
208 | #endif | |
209 | ||
210 | #endif /* __XFS_QM_H__ */ |