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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_zone *xfs_qm_dqtrxzone;
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 xfs_qwarncnt_t warn; /* limit for warnings */
38};
39
40/* Defaults for each quota type: time limits, warn limits, usage limits */
41struct xfs_def_quota {
42 struct xfs_quota_limits blk;
43 struct xfs_quota_limits ino;
44 struct xfs_quota_limits rtb;
45};
46
47/*
48 * Various quota information for individual filesystems.
49 * The mount structure keeps a pointer to this.
50 */
51struct xfs_quotainfo {
52 struct radix_tree_root qi_uquota_tree;
53 struct radix_tree_root qi_gquota_tree;
54 struct radix_tree_root qi_pquota_tree;
55 struct mutex qi_tree_lock;
56 struct xfs_inode *qi_uquotaip; /* user quota inode */
57 struct xfs_inode *qi_gquotaip; /* group quota inode */
58 struct xfs_inode *qi_pquotaip; /* project quota inode */
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
74static inline struct radix_tree_root *
75xfs_dquot_tree(
76 struct xfs_quotainfo *qi,
77 xfs_dqtype_t type)
78{
79 switch (type) {
80 case XFS_DQTYPE_USER:
81 return &qi->qi_uquota_tree;
82 case XFS_DQTYPE_GROUP:
83 return &qi->qi_gquota_tree;
84 case XFS_DQTYPE_PROJ:
85 return &qi->qi_pquota_tree;
86 default:
87 ASSERT(0);
88 }
89 return NULL;
90}
91
92static inline struct xfs_inode *
93xfs_quota_inode(struct xfs_mount *mp, xfs_dqtype_t type)
94{
95 switch (type) {
96 case XFS_DQTYPE_USER:
97 return mp->m_quotainfo->qi_uquotaip;
98 case XFS_DQTYPE_GROUP:
99 return mp->m_quotainfo->qi_gquotaip;
100 case XFS_DQTYPE_PROJ:
101 return mp->m_quotainfo->qi_pquotaip;
102 default:
103 ASSERT(0);
104 }
105 return NULL;
106}
107
108extern void xfs_trans_mod_dquot(struct xfs_trans *tp, struct xfs_dquot *dqp,
109 uint field, int64_t delta);
110extern void xfs_trans_dqjoin(struct xfs_trans *, struct xfs_dquot *);
111extern void xfs_trans_log_dquot(struct xfs_trans *, struct xfs_dquot *);
112
113/*
114 * We keep the usr, grp, and prj dquots separately so that locking will be
115 * easier to do at commit time. All transactions that we know of at this point
116 * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value.
117 */
118enum {
119 XFS_QM_TRANS_USR = 0,
120 XFS_QM_TRANS_GRP,
121 XFS_QM_TRANS_PRJ,
122 XFS_QM_TRANS_DQTYPES
123};
124#define XFS_QM_TRANS_MAXDQS 2
125struct xfs_dquot_acct {
126 struct xfs_dqtrx dqs[XFS_QM_TRANS_DQTYPES][XFS_QM_TRANS_MAXDQS];
127};
128
129/*
130 * Users are allowed to have a usage exceeding their softlimit for
131 * a period this long.
132 */
133#define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */
134#define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */
135#define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */
136
137#define XFS_QM_BWARNLIMIT 5
138#define XFS_QM_IWARNLIMIT 5
139#define XFS_QM_RTBWARNLIMIT 5
140
141extern void xfs_qm_destroy_quotainfo(struct xfs_mount *);
142
143/* dquot stuff */
144extern void xfs_qm_dqpurge_all(struct xfs_mount *, uint);
145
146/* quota ops */
147extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint);
148extern int xfs_qm_scall_getquota(struct xfs_mount *mp,
149 xfs_dqid_t id,
150 xfs_dqtype_t type,
151 struct qc_dqblk *dst);
152extern int xfs_qm_scall_getquota_next(struct xfs_mount *mp,
153 xfs_dqid_t *id,
154 xfs_dqtype_t type,
155 struct qc_dqblk *dst);
156extern int xfs_qm_scall_setqlim(struct xfs_mount *mp,
157 xfs_dqid_t id,
158 xfs_dqtype_t type,
159 struct qc_dqblk *newlim);
160extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint);
161extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint);
162
163static inline struct xfs_def_quota *
164xfs_get_defquota(struct xfs_quotainfo *qi, xfs_dqtype_t type)
165{
166 switch (type) {
167 case XFS_DQTYPE_USER:
168 return &qi->qi_usr_default;
169 case XFS_DQTYPE_GROUP:
170 return &qi->qi_grp_default;
171 case XFS_DQTYPE_PROJ:
172 return &qi->qi_prj_default;
173 default:
174 ASSERT(0);
175 return NULL;
176 }
177}
178
179#endif /* __XFS_QM_H__ */