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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_core.d_blk_hardlimit && \
24 !dqp->q_core.d_blk_softlimit && \
25 !dqp->q_core.d_rtb_hardlimit && \
26 !dqp->q_core.d_rtb_softlimit && \
27 !dqp->q_core.d_ino_hardlimit && \
28 !dqp->q_core.d_ino_softlimit && \
29 !dqp->q_core.d_bcount && \
30 !dqp->q_core.d_rtbcount && \
31 !dqp->q_core.d_icount)
32
33/*
34 * This defines the unit of allocation of dquots.
35 * Currently, it is just one file system block, and a 4K blk contains 30
36 * (136 * 30 = 4080) dquots. It's probably not worth trying to make
37 * this more dynamic.
38 * XXXsup However, if this number is changed, we have to make sure that we don't
39 * implicitly assume that we do allocations in chunks of a single filesystem
40 * block in the dquot/xqm code.
41 */
42#define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1
43
44struct xfs_def_quota {
45 xfs_qcnt_t bhardlimit; /* default data blk hard limit */
46 xfs_qcnt_t bsoftlimit; /* default data blk soft limit */
47 xfs_qcnt_t ihardlimit; /* default inode count hard limit */
48 xfs_qcnt_t isoftlimit; /* default inode count soft limit */
49 xfs_qcnt_t rtbhardlimit; /* default realtime blk hard limit */
50 xfs_qcnt_t rtbsoftlimit; /* default realtime blk soft limit */
51};
52
53/*
54 * Various quota information for individual filesystems.
55 * The mount structure keeps a pointer to this.
56 */
57typedef struct xfs_quotainfo {
58 struct radix_tree_root qi_uquota_tree;
59 struct radix_tree_root qi_gquota_tree;
60 struct radix_tree_root qi_pquota_tree;
61 struct mutex qi_tree_lock;
62 struct xfs_inode *qi_uquotaip; /* user quota inode */
63 struct xfs_inode *qi_gquotaip; /* group quota inode */
64 struct xfs_inode *qi_pquotaip; /* project quota inode */
65 struct list_lru qi_lru;
66 int qi_dquots;
67 time_t qi_btimelimit; /* limit for blks timer */
68 time_t qi_itimelimit; /* limit for inodes timer */
69 time_t qi_rtbtimelimit;/* limit for rt blks timer */
70 xfs_qwarncnt_t qi_bwarnlimit; /* limit for blks warnings */
71 xfs_qwarncnt_t qi_iwarnlimit; /* limit for inodes warnings */
72 xfs_qwarncnt_t qi_rtbwarnlimit;/* limit for rt blks warnings */
73 struct mutex qi_quotaofflock;/* to serialize quotaoff */
74 xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */
75 uint qi_dqperchunk; /* # ondisk dqs in above chunk */
76 struct xfs_def_quota qi_usr_default;
77 struct xfs_def_quota qi_grp_default;
78 struct xfs_def_quota qi_prj_default;
79 struct shrinker qi_shrinker;
80} xfs_quotainfo_t;
81
82static inline struct radix_tree_root *
83xfs_dquot_tree(
84 struct xfs_quotainfo *qi,
85 int type)
86{
87 switch (type) {
88 case XFS_DQ_USER:
89 return &qi->qi_uquota_tree;
90 case XFS_DQ_GROUP:
91 return &qi->qi_gquota_tree;
92 case XFS_DQ_PROJ:
93 return &qi->qi_pquota_tree;
94 default:
95 ASSERT(0);
96 }
97 return NULL;
98}
99
100static inline struct xfs_inode *
101xfs_quota_inode(xfs_mount_t *mp, uint dq_flags)
102{
103 switch (dq_flags & XFS_DQ_ALLTYPES) {
104 case XFS_DQ_USER:
105 return mp->m_quotainfo->qi_uquotaip;
106 case XFS_DQ_GROUP:
107 return mp->m_quotainfo->qi_gquotaip;
108 case XFS_DQ_PROJ:
109 return mp->m_quotainfo->qi_pquotaip;
110 default:
111 ASSERT(0);
112 }
113 return NULL;
114}
115
116extern void xfs_trans_mod_dquot(struct xfs_trans *tp, struct xfs_dquot *dqp,
117 uint field, int64_t delta);
118extern void xfs_trans_dqjoin(struct xfs_trans *, struct xfs_dquot *);
119extern void xfs_trans_log_dquot(struct xfs_trans *, struct xfs_dquot *);
120
121/*
122 * We keep the usr, grp, and prj dquots separately so that locking will be
123 * easier to do at commit time. All transactions that we know of at this point
124 * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value.
125 */
126enum {
127 XFS_QM_TRANS_USR = 0,
128 XFS_QM_TRANS_GRP,
129 XFS_QM_TRANS_PRJ,
130 XFS_QM_TRANS_DQTYPES
131};
132#define XFS_QM_TRANS_MAXDQS 2
133struct xfs_dquot_acct {
134 struct xfs_dqtrx dqs[XFS_QM_TRANS_DQTYPES][XFS_QM_TRANS_MAXDQS];
135};
136
137/*
138 * Users are allowed to have a usage exceeding their softlimit for
139 * a period this long.
140 */
141#define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */
142#define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */
143#define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */
144
145#define XFS_QM_BWARNLIMIT 5
146#define XFS_QM_IWARNLIMIT 5
147#define XFS_QM_RTBWARNLIMIT 5
148
149extern void xfs_qm_destroy_quotainfo(struct xfs_mount *);
150
151/* dquot stuff */
152extern void xfs_qm_dqpurge_all(struct xfs_mount *, uint);
153extern void xfs_qm_dqrele_all_inodes(struct xfs_mount *, uint);
154
155/* quota ops */
156extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint);
157extern int xfs_qm_scall_getquota(struct xfs_mount *, xfs_dqid_t,
158 uint, struct qc_dqblk *);
159extern int xfs_qm_scall_getquota_next(struct xfs_mount *,
160 xfs_dqid_t *, uint, struct qc_dqblk *);
161extern int xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint,
162 struct qc_dqblk *);
163extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint);
164extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint);
165
166static inline struct xfs_def_quota *
167xfs_get_defquota(struct xfs_dquot *dqp, struct xfs_quotainfo *qi)
168{
169 struct xfs_def_quota *defq;
170
171 if (XFS_QM_ISUDQ(dqp))
172 defq = &qi->qi_usr_default;
173 else if (XFS_QM_ISGDQ(dqp))
174 defq = &qi->qi_grp_default;
175 else {
176 ASSERT(XFS_QM_ISPDQ(dqp));
177 defq = &qi->qi_prj_default;
178 }
179 return defq;
180}
181
182#endif /* __XFS_QM_H__ */