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1da177e4 | 1 | /* |
c8ad20ff | 2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved. |
1da177e4 LT |
3 | * |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of version 2 of the GNU General Public License as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it would be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
11 | * | |
12 | * Further, this software is distributed without any warranty that it is | |
13 | * free of the rightful claim of any third person regarding infringement | |
14 | * or the like. Any license provided herein, whether implied or | |
15 | * otherwise, applies only to this software file. Patent licenses, if | |
16 | * any, provided herein do not apply to combinations of this program with | |
17 | * other software, or any other product whatsoever. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License along | |
20 | * with this program; if not, write the Free Software Foundation, Inc., 59 | |
21 | * Temple Place - Suite 330, Boston MA 02111-1307, USA. | |
22 | * | |
23 | * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, | |
24 | * Mountain View, CA 94043, or: | |
25 | * | |
26 | * http://www.sgi.com | |
27 | * | |
28 | * For further information regarding this notice, see: | |
29 | * | |
30 | * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ | |
31 | */ | |
32 | #ifndef __XFS_QM_H__ | |
33 | #define __XFS_QM_H__ | |
34 | ||
35 | #include "xfs_dquot_item.h" | |
36 | #include "xfs_dquot.h" | |
37 | #include "xfs_quota_priv.h" | |
38 | #include "xfs_qm_stats.h" | |
39 | ||
40 | struct xfs_qm; | |
41 | struct xfs_inode; | |
42 | ||
43 | extern mutex_t xfs_Gqm_lock; | |
44 | extern struct xfs_qm *xfs_Gqm; | |
45 | extern kmem_zone_t *qm_dqzone; | |
46 | extern kmem_zone_t *qm_dqtrxzone; | |
47 | ||
48 | /* | |
49 | * Used in xfs_qm_sync called by xfs_sync to count the max times that it can | |
50 | * iterate over the mountpt's dquot list in one call. | |
51 | */ | |
52 | #define XFS_QM_SYNC_MAX_RESTARTS 7 | |
53 | ||
54 | /* | |
55 | * Ditto, for xfs_qm_dqreclaim_one. | |
56 | */ | |
57 | #define XFS_QM_RECLAIM_MAX_RESTARTS 4 | |
58 | ||
59 | /* | |
60 | * Ideal ratio of free to in use dquots. Quota manager makes an attempt | |
61 | * to keep this balance. | |
62 | */ | |
63 | #define XFS_QM_DQFREE_RATIO 2 | |
64 | ||
65 | /* | |
66 | * Dquot hashtable constants/threshold values. | |
67 | */ | |
68 | #define XFS_QM_NCSIZE_THRESHOLD 5000 | |
69 | #define XFS_QM_HASHSIZE_LOW 32 | |
70 | #define XFS_QM_HASHSIZE_HIGH 64 | |
71 | ||
72 | /* | |
73 | * We output a cmn_err when quotachecking a quota file with more than | |
74 | * this many fsbs. | |
75 | */ | |
76 | #define XFS_QM_BIG_QCHECK_NBLKS 500 | |
77 | ||
78 | /* | |
79 | * This defines the unit of allocation of dquots. | |
80 | * Currently, it is just one file system block, and a 4K blk contains 30 | |
81 | * (136 * 30 = 4080) dquots. It's probably not worth trying to make | |
82 | * this more dynamic. | |
83 | * XXXsup However, if this number is changed, we have to make sure that we don't | |
84 | * implicitly assume that we do allocations in chunks of a single filesystem | |
85 | * block in the dquot/xqm code. | |
86 | */ | |
87 | #define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1 | |
88 | /* | |
89 | * When doing a quotacheck, we log dquot clusters of this many FSBs at most | |
90 | * in a single transaction. We don't want to ask for too huge a log reservation. | |
91 | */ | |
92 | #define XFS_QM_MAX_DQCLUSTER_LOGSZ 3 | |
93 | ||
94 | typedef xfs_dqhash_t xfs_dqlist_t; | |
95 | /* | |
96 | * The freelist head. The first two fields match the first two in the | |
97 | * xfs_dquot_t structure (in xfs_dqmarker_t) | |
98 | */ | |
99 | typedef struct xfs_frlist { | |
100 | struct xfs_dquot *qh_next; | |
101 | struct xfs_dquot *qh_prev; | |
102 | mutex_t qh_lock; | |
103 | uint qh_version; | |
104 | uint qh_nelems; | |
105 | } xfs_frlist_t; | |
106 | ||
107 | /* | |
108 | * Quota Manager (global) structure. Lives only in core. | |
109 | */ | |
110 | typedef struct xfs_qm { | |
111 | xfs_dqlist_t *qm_usr_dqhtable;/* udquot hash table */ | |
112 | xfs_dqlist_t *qm_grp_dqhtable;/* gdquot hash table */ | |
113 | uint qm_dqhashmask; /* # buckets in dq hashtab - 1 */ | |
114 | xfs_frlist_t qm_dqfreelist; /* freelist of dquots */ | |
115 | atomic_t qm_totaldquots; /* total incore dquots */ | |
116 | uint qm_nrefs; /* file systems with quota on */ | |
117 | int qm_dqfree_ratio;/* ratio of free to inuse dquots */ | |
118 | kmem_zone_t *qm_dqzone; /* dquot mem-alloc zone */ | |
119 | kmem_zone_t *qm_dqtrxzone; /* t_dqinfo of transactions */ | |
120 | } xfs_qm_t; | |
121 | ||
122 | /* | |
123 | * Various quota information for individual filesystems. | |
124 | * The mount structure keeps a pointer to this. | |
125 | */ | |
126 | typedef struct xfs_quotainfo { | |
127 | xfs_inode_t *qi_uquotaip; /* user quota inode */ | |
128 | xfs_inode_t *qi_gquotaip; /* group quota inode */ | |
129 | lock_t qi_pinlock; /* dquot pinning mutex */ | |
130 | xfs_dqlist_t qi_dqlist; /* all dquots in filesys */ | |
131 | int qi_dqreclaims; /* a change here indicates | |
132 | a removal in the dqlist */ | |
133 | time_t qi_btimelimit; /* limit for blks timer */ | |
134 | time_t qi_itimelimit; /* limit for inodes timer */ | |
135 | time_t qi_rtbtimelimit;/* limit for rt blks timer */ | |
136 | xfs_qwarncnt_t qi_bwarnlimit; /* limit for num warnings */ | |
137 | xfs_qwarncnt_t qi_iwarnlimit; /* limit for num warnings */ | |
138 | mutex_t qi_quotaofflock;/* to serialize quotaoff */ | |
139 | xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */ | |
140 | uint qi_dqperchunk; /* # ondisk dqs in above chunk */ | |
141 | xfs_qcnt_t qi_bhardlimit; /* default data blk hard limit */ | |
142 | xfs_qcnt_t qi_bsoftlimit; /* default data blk soft limit */ | |
143 | xfs_qcnt_t qi_ihardlimit; /* default inode count hard limit */ | |
144 | xfs_qcnt_t qi_isoftlimit; /* default inode count soft limit */ | |
145 | xfs_qcnt_t qi_rtbhardlimit;/* default realtime blk hard limit */ | |
146 | xfs_qcnt_t qi_rtbsoftlimit;/* default realtime blk soft limit */ | |
147 | } xfs_quotainfo_t; | |
148 | ||
149 | ||
150 | extern xfs_dqtrxops_t xfs_trans_dquot_ops; | |
151 | ||
152 | extern void xfs_trans_mod_dquot(xfs_trans_t *, xfs_dquot_t *, uint, long); | |
153 | extern int xfs_trans_reserve_quota_bydquots(xfs_trans_t *, xfs_mount_t *, | |
154 | xfs_dquot_t *, xfs_dquot_t *, long, long, uint); | |
155 | extern void xfs_trans_dqjoin(xfs_trans_t *, xfs_dquot_t *); | |
156 | extern void xfs_trans_log_dquot(xfs_trans_t *, xfs_dquot_t *); | |
157 | ||
158 | /* | |
159 | * We keep the usr and grp dquots separately so that locking will be easier | |
160 | * to do at commit time. All transactions that we know of at this point | |
161 | * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value. | |
162 | */ | |
163 | #define XFS_QM_TRANS_MAXDQS 2 | |
164 | typedef struct xfs_dquot_acct { | |
165 | xfs_dqtrx_t dqa_usrdquots[XFS_QM_TRANS_MAXDQS]; | |
166 | xfs_dqtrx_t dqa_grpdquots[XFS_QM_TRANS_MAXDQS]; | |
167 | } xfs_dquot_acct_t; | |
168 | ||
169 | /* | |
170 | * Users are allowed to have a usage exceeding their softlimit for | |
171 | * a period this long. | |
172 | */ | |
173 | #define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */ | |
174 | #define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */ | |
175 | #define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */ | |
176 | ||
177 | #define XFS_QM_BWARNLIMIT 5 | |
178 | #define XFS_QM_IWARNLIMIT 5 | |
179 | ||
180 | #define XFS_QM_LOCK(xqm) (mutex_lock(&xqm##_lock, PINOD)) | |
181 | #define XFS_QM_UNLOCK(xqm) (mutex_unlock(&xqm##_lock)) | |
182 | #define XFS_QM_HOLD(xqm) ((xqm)->qm_nrefs++) | |
183 | #define XFS_QM_RELE(xqm) ((xqm)->qm_nrefs--) | |
184 | ||
185 | extern void xfs_mount_reset_sbqflags(xfs_mount_t *); | |
186 | ||
1da177e4 LT |
187 | extern void xfs_qm_destroy_quotainfo(xfs_mount_t *); |
188 | extern int xfs_qm_mount_quotas(xfs_mount_t *, int); | |
189 | extern void xfs_qm_mount_quotainit(xfs_mount_t *, uint); | |
190 | extern int xfs_qm_quotacheck(xfs_mount_t *); | |
191 | extern void xfs_qm_unmount_quotadestroy(xfs_mount_t *); | |
192 | extern int xfs_qm_unmount_quotas(xfs_mount_t *); | |
193 | extern int xfs_qm_write_sb_changes(xfs_mount_t *, __int64_t); | |
194 | extern int xfs_qm_sync(xfs_mount_t *, short); | |
195 | ||
196 | /* dquot stuff */ | |
197 | extern boolean_t xfs_qm_dqalloc_incore(xfs_dquot_t **); | |
198 | extern int xfs_qm_dqattach(xfs_inode_t *, uint); | |
199 | extern void xfs_qm_dqdetach(xfs_inode_t *); | |
200 | extern int xfs_qm_dqpurge_all(xfs_mount_t *, uint); | |
201 | extern void xfs_qm_dqrele_all_inodes(xfs_mount_t *, uint); | |
202 | ||
203 | /* vop stuff */ | |
204 | extern int xfs_qm_vop_dqalloc(xfs_mount_t *, xfs_inode_t *, | |
c8ad20ff | 205 | uid_t, gid_t, prid_t, uint, |
1da177e4 LT |
206 | xfs_dquot_t **, xfs_dquot_t **); |
207 | extern void xfs_qm_vop_dqattach_and_dqmod_newinode( | |
208 | xfs_trans_t *, xfs_inode_t *, | |
209 | xfs_dquot_t *, xfs_dquot_t *); | |
210 | extern int xfs_qm_vop_rename_dqattach(xfs_inode_t **); | |
211 | extern xfs_dquot_t * xfs_qm_vop_chown(xfs_trans_t *, xfs_inode_t *, | |
212 | xfs_dquot_t **, xfs_dquot_t *); | |
213 | extern int xfs_qm_vop_chown_reserve(xfs_trans_t *, xfs_inode_t *, | |
214 | xfs_dquot_t *, xfs_dquot_t *, uint); | |
215 | ||
216 | /* list stuff */ | |
1da177e4 LT |
217 | extern void xfs_qm_freelist_append(xfs_frlist_t *, xfs_dquot_t *); |
218 | extern void xfs_qm_freelist_unlink(xfs_dquot_t *); | |
219 | extern int xfs_qm_freelist_lock_nowait(xfs_qm_t *); | |
1da177e4 LT |
220 | |
221 | /* system call interface */ | |
222 | extern int xfs_qm_quotactl(bhv_desc_t *, int, int, xfs_caddr_t); | |
223 | ||
224 | #ifdef DEBUG | |
225 | extern int xfs_qm_internalqcheck(xfs_mount_t *); | |
226 | #else | |
227 | #define xfs_qm_internalqcheck(mp) (0) | |
228 | #endif | |
229 | ||
230 | #endif /* __XFS_QM_H__ */ |