Loading...
1/*
2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
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
7 * published by the Free Software Foundation.
8 *
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.
13 *
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
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
26struct xfs_qm;
27struct xfs_inode;
28
29extern uint ndquot;
30extern struct mutex xfs_Gqm_lock;
31extern struct xfs_qm *xfs_Gqm;
32extern kmem_zone_t *qm_dqzone;
33extern 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 */
55#define XFS_QM_HASHSIZE_LOW (PAGE_SIZE / sizeof(xfs_dqhash_t))
56#define XFS_QM_HASHSIZE_HIGH ((PAGE_SIZE * 4) / sizeof(xfs_dqhash_t))
57
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
69typedef xfs_dqhash_t xfs_dqlist_t;
70
71/*
72 * Quota Manager (global) structure. Lives only in core.
73 */
74typedef struct xfs_qm {
75 xfs_dqlist_t *qm_usr_dqhtable;/* udquot hash table */
76 xfs_dqlist_t *qm_grp_dqhtable;/* gdquot hash table */
77 uint qm_dqhashmask; /* # buckets in dq hashtab - 1 */
78 struct list_head qm_dqfrlist; /* freelist of dquots */
79 struct mutex qm_dqfrlist_lock;
80 int qm_dqfrlist_cnt;
81 atomic_t qm_totaldquots; /* total incore dquots */
82 uint qm_nrefs; /* file systems with quota on */
83 int qm_dqfree_ratio;/* ratio of free to inuse dquots */
84 kmem_zone_t *qm_dqzone; /* dquot mem-alloc zone */
85 kmem_zone_t *qm_dqtrxzone; /* t_dqinfo of transactions */
86} xfs_qm_t;
87
88/*
89 * Various quota information for individual filesystems.
90 * The mount structure keeps a pointer to this.
91 */
92typedef struct xfs_quotainfo {
93 xfs_inode_t *qi_uquotaip; /* user quota inode */
94 xfs_inode_t *qi_gquotaip; /* group quota inode */
95 struct list_head qi_dqlist; /* all dquots in filesys */
96 struct mutex qi_dqlist_lock;
97 int qi_dquots;
98 int qi_dqreclaims; /* a change here indicates
99 a removal in the dqlist */
100 time_t qi_btimelimit; /* limit for blks timer */
101 time_t qi_itimelimit; /* limit for inodes timer */
102 time_t qi_rtbtimelimit;/* limit for rt blks timer */
103 xfs_qwarncnt_t qi_bwarnlimit; /* limit for blks warnings */
104 xfs_qwarncnt_t qi_iwarnlimit; /* limit for inodes warnings */
105 xfs_qwarncnt_t qi_rtbwarnlimit;/* limit for rt blks warnings */
106 struct mutex qi_quotaofflock;/* to serialize quotaoff */
107 xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */
108 uint qi_dqperchunk; /* # ondisk dqs in above chunk */
109 xfs_qcnt_t qi_bhardlimit; /* default data blk hard limit */
110 xfs_qcnt_t qi_bsoftlimit; /* default data blk soft limit */
111 xfs_qcnt_t qi_ihardlimit; /* default inode count hard limit */
112 xfs_qcnt_t qi_isoftlimit; /* default inode count soft limit */
113 xfs_qcnt_t qi_rtbhardlimit;/* default realtime blk hard limit */
114 xfs_qcnt_t qi_rtbsoftlimit;/* default realtime blk soft limit */
115} xfs_quotainfo_t;
116
117
118extern void xfs_trans_mod_dquot(xfs_trans_t *, xfs_dquot_t *, uint, long);
119extern int xfs_trans_reserve_quota_bydquots(xfs_trans_t *, xfs_mount_t *,
120 xfs_dquot_t *, xfs_dquot_t *, long, long, uint);
121extern void xfs_trans_dqjoin(xfs_trans_t *, xfs_dquot_t *);
122extern void xfs_trans_log_dquot(xfs_trans_t *, xfs_dquot_t *);
123
124/*
125 * We keep the usr and grp dquots separately so that locking will be easier
126 * to do at commit time. All transactions that we know of at this point
127 * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value.
128 */
129#define XFS_QM_TRANS_MAXDQS 2
130typedef struct xfs_dquot_acct {
131 xfs_dqtrx_t dqa_usrdquots[XFS_QM_TRANS_MAXDQS];
132 xfs_dqtrx_t dqa_grpdquots[XFS_QM_TRANS_MAXDQS];
133} xfs_dquot_acct_t;
134
135/*
136 * Users are allowed to have a usage exceeding their softlimit for
137 * a period this long.
138 */
139#define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */
140#define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */
141#define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */
142
143#define XFS_QM_BWARNLIMIT 5
144#define XFS_QM_IWARNLIMIT 5
145#define XFS_QM_RTBWARNLIMIT 5
146
147extern void xfs_qm_destroy_quotainfo(xfs_mount_t *);
148extern int xfs_qm_quotacheck(xfs_mount_t *);
149extern int xfs_qm_write_sb_changes(xfs_mount_t *, __int64_t);
150
151/* dquot stuff */
152extern boolean_t xfs_qm_dqalloc_incore(xfs_dquot_t **);
153extern int xfs_qm_dqpurge_all(xfs_mount_t *, uint);
154extern void xfs_qm_dqrele_all_inodes(xfs_mount_t *, uint);
155
156/* quota ops */
157extern int xfs_qm_scall_trunc_qfiles(xfs_mount_t *, uint);
158extern int xfs_qm_scall_getquota(xfs_mount_t *, xfs_dqid_t, uint,
159 fs_disk_quota_t *);
160extern int xfs_qm_scall_setqlim(xfs_mount_t *, xfs_dqid_t, uint,
161 fs_disk_quota_t *);
162extern int xfs_qm_scall_getqstat(xfs_mount_t *, fs_quota_stat_t *);
163extern int xfs_qm_scall_quotaon(xfs_mount_t *, uint);
164extern int xfs_qm_scall_quotaoff(xfs_mount_t *, uint);
165
166#endif /* __XFS_QM_H__ */
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
4 * All Rights Reserved.
5 */
6#ifndef __XFS_QM_H__
7#define __XFS_QM_H__
8
9#include "xfs_dquot_item.h"
10#include "xfs_dquot.h"
11
12struct xfs_inode;
13
14extern struct kmem_cache *xfs_dqtrx_cache;
15
16/*
17 * Number of bmaps that we ask from bmapi when doing a quotacheck.
18 * We make this restriction to keep the memory usage to a minimum.
19 */
20#define XFS_DQITER_MAP_SIZE 10
21
22#define XFS_IS_DQUOT_UNINITIALIZED(dqp) ( \
23 !dqp->q_blk.hardlimit && \
24 !dqp->q_blk.softlimit && \
25 !dqp->q_rtb.hardlimit && \
26 !dqp->q_rtb.softlimit && \
27 !dqp->q_ino.hardlimit && \
28 !dqp->q_ino.softlimit && \
29 !dqp->q_blk.count && \
30 !dqp->q_rtb.count && \
31 !dqp->q_ino.count)
32
33struct xfs_quota_limits {
34 xfs_qcnt_t hard; /* default hard limit */
35 xfs_qcnt_t soft; /* default soft limit */
36 time64_t time; /* limit for timers */
37};
38
39/* Defaults for each quota type: time limits, warn limits, usage limits */
40struct xfs_def_quota {
41 struct xfs_quota_limits blk;
42 struct xfs_quota_limits ino;
43 struct xfs_quota_limits rtb;
44};
45
46/*
47 * Various quota information for individual filesystems.
48 * The mount structure keeps a pointer to this.
49 */
50struct xfs_quotainfo {
51 struct radix_tree_root qi_uquota_tree;
52 struct radix_tree_root qi_gquota_tree;
53 struct radix_tree_root qi_pquota_tree;
54 struct mutex qi_tree_lock;
55 struct xfs_inode *qi_uquotaip; /* user quota inode */
56 struct xfs_inode *qi_gquotaip; /* group quota inode */
57 struct xfs_inode *qi_pquotaip; /* project quota inode */
58 struct xfs_inode *qi_dirip; /* quota metadir */
59 struct list_lru qi_lru;
60 int qi_dquots;
61 struct mutex qi_quotaofflock;/* to serialize quotaoff */
62 xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */
63 uint qi_dqperchunk; /* # ondisk dq in above chunk */
64 struct xfs_def_quota qi_usr_default;
65 struct xfs_def_quota qi_grp_default;
66 struct xfs_def_quota qi_prj_default;
67 struct shrinker *qi_shrinker;
68
69 /* Minimum and maximum quota expiration timestamp values. */
70 time64_t qi_expiry_min;
71 time64_t qi_expiry_max;
72
73 /* Hook to feed quota counter updates to an active online repair. */
74 struct xfs_hooks qi_mod_ino_dqtrx_hooks;
75 struct xfs_hooks qi_apply_dqtrx_hooks;
76};
77
78static inline struct radix_tree_root *
79xfs_dquot_tree(
80 struct xfs_quotainfo *qi,
81 xfs_dqtype_t type)
82{
83 switch (type) {
84 case XFS_DQTYPE_USER:
85 return &qi->qi_uquota_tree;
86 case XFS_DQTYPE_GROUP:
87 return &qi->qi_gquota_tree;
88 case XFS_DQTYPE_PROJ:
89 return &qi->qi_pquota_tree;
90 default:
91 ASSERT(0);
92 }
93 return NULL;
94}
95
96static inline struct xfs_inode *
97xfs_quota_inode(struct xfs_mount *mp, xfs_dqtype_t type)
98{
99 switch (type) {
100 case XFS_DQTYPE_USER:
101 return mp->m_quotainfo->qi_uquotaip;
102 case XFS_DQTYPE_GROUP:
103 return mp->m_quotainfo->qi_gquotaip;
104 case XFS_DQTYPE_PROJ:
105 return mp->m_quotainfo->qi_pquotaip;
106 default:
107 ASSERT(0);
108 }
109 return NULL;
110}
111
112/*
113 * Parameters for tracking dqtrx changes on behalf of an inode. The hook
114 * function arg parameter is the field being updated.
115 */
116struct xfs_mod_ino_dqtrx_params {
117 uintptr_t tx_id;
118 xfs_ino_t ino;
119 xfs_dqtype_t q_type;
120 xfs_dqid_t q_id;
121 int64_t delta;
122};
123
124extern void xfs_trans_mod_dquot(struct xfs_trans *tp, struct xfs_dquot *dqp,
125 uint field, int64_t delta);
126extern void xfs_trans_dqjoin(struct xfs_trans *, struct xfs_dquot *);
127extern void xfs_trans_log_dquot(struct xfs_trans *, struct xfs_dquot *);
128
129/*
130 * We keep the usr, grp, and prj dquots separately so that locking will be
131 * easier to do at commit time. All transactions that we know of at this point
132 * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value.
133 */
134enum {
135 XFS_QM_TRANS_USR = 0,
136 XFS_QM_TRANS_GRP,
137 XFS_QM_TRANS_PRJ,
138 XFS_QM_TRANS_DQTYPES
139};
140#define XFS_QM_TRANS_MAXDQS 5
141struct xfs_dquot_acct {
142 struct xfs_dqtrx dqs[XFS_QM_TRANS_DQTYPES][XFS_QM_TRANS_MAXDQS];
143};
144
145/*
146 * Users are allowed to have a usage exceeding their softlimit for
147 * a period this long.
148 */
149#define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */
150#define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */
151#define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */
152
153extern void xfs_qm_destroy_quotainfo(struct xfs_mount *);
154
155/* quota ops */
156extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint);
157extern int xfs_qm_scall_getquota(struct xfs_mount *mp,
158 xfs_dqid_t id,
159 xfs_dqtype_t type,
160 struct qc_dqblk *dst);
161extern int xfs_qm_scall_getquota_next(struct xfs_mount *mp,
162 xfs_dqid_t *id,
163 xfs_dqtype_t type,
164 struct qc_dqblk *dst);
165extern int xfs_qm_scall_setqlim(struct xfs_mount *mp,
166 xfs_dqid_t id,
167 xfs_dqtype_t type,
168 struct qc_dqblk *newlim);
169extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint);
170extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint);
171
172static inline struct xfs_def_quota *
173xfs_get_defquota(struct xfs_quotainfo *qi, xfs_dqtype_t type)
174{
175 switch (type) {
176 case XFS_DQTYPE_USER:
177 return &qi->qi_usr_default;
178 case XFS_DQTYPE_GROUP:
179 return &qi->qi_grp_default;
180 case XFS_DQTYPE_PROJ:
181 return &qi->qi_prj_default;
182 default:
183 ASSERT(0);
184 return NULL;
185 }
186}
187
188int xfs_qm_qino_load(struct xfs_mount *mp, xfs_dqtype_t type,
189 struct xfs_inode **ipp);
190
191#endif /* __XFS_QM_H__ */