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
12 struct xfs_inode;
13
14 extern 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
44 struct 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 */
57 typedef 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
82 static inline struct radix_tree_root *
xfs_dquot_tree(struct xfs_quotainfo * qi,int type)83 xfs_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
100 static inline struct xfs_inode *
xfs_quota_inode(xfs_mount_t * mp,uint dq_flags)101 xfs_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
116 extern void xfs_trans_mod_dquot(struct xfs_trans *,
117 struct xfs_dquot *, uint, long);
118 extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *,
119 struct xfs_mount *, struct xfs_dquot *,
120 struct xfs_dquot *, struct xfs_dquot *,
121 long, long, uint);
122 extern void xfs_trans_dqjoin(struct xfs_trans *, struct xfs_dquot *);
123 extern void xfs_trans_log_dquot(struct xfs_trans *, struct xfs_dquot *);
124
125 /*
126 * We keep the usr, grp, and prj dquots separately so that locking will be
127 * easier to do at commit time. All transactions that we know of at this point
128 * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value.
129 */
130 enum {
131 XFS_QM_TRANS_USR = 0,
132 XFS_QM_TRANS_GRP,
133 XFS_QM_TRANS_PRJ,
134 XFS_QM_TRANS_DQTYPES
135 };
136 #define XFS_QM_TRANS_MAXDQS 2
137 struct xfs_dquot_acct {
138 struct xfs_dqtrx dqs[XFS_QM_TRANS_DQTYPES][XFS_QM_TRANS_MAXDQS];
139 };
140
141 /*
142 * Users are allowed to have a usage exceeding their softlimit for
143 * a period this long.
144 */
145 #define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */
146 #define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */
147 #define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */
148
149 #define XFS_QM_BWARNLIMIT 5
150 #define XFS_QM_IWARNLIMIT 5
151 #define XFS_QM_RTBWARNLIMIT 5
152
153 extern void xfs_qm_destroy_quotainfo(struct xfs_mount *);
154
155 /* dquot stuff */
156 extern void xfs_qm_dqpurge_all(struct xfs_mount *, uint);
157 extern void xfs_qm_dqrele_all_inodes(struct xfs_mount *, uint);
158
159 /* quota ops */
160 extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint);
161 extern int xfs_qm_scall_getquota(struct xfs_mount *, xfs_dqid_t,
162 uint, struct qc_dqblk *);
163 extern int xfs_qm_scall_getquota_next(struct xfs_mount *,
164 xfs_dqid_t *, uint, struct qc_dqblk *);
165 extern int xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint,
166 struct qc_dqblk *);
167 extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint);
168 extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint);
169
170 static inline struct xfs_def_quota *
xfs_get_defquota(struct xfs_dquot * dqp,struct xfs_quotainfo * qi)171 xfs_get_defquota(struct xfs_dquot *dqp, struct xfs_quotainfo *qi)
172 {
173 struct xfs_def_quota *defq;
174
175 if (XFS_QM_ISUDQ(dqp))
176 defq = &qi->qi_usr_default;
177 else if (XFS_QM_ISGDQ(dqp))
178 defq = &qi->qi_grp_default;
179 else {
180 ASSERT(XFS_QM_ISPDQ(dqp));
181 defq = &qi->qi_prj_default;
182 }
183 return defq;
184 }
185
186 #endif /* __XFS_QM_H__ */
187