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_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 | |
33 | struct 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 */ |
40 | struct 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 | */ |
50 | struct 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 list_lru qi_lru; |
59 | int qi_dquots; |
60 | struct mutex qi_quotaofflock;/* to serialize quotaoff */ |
61 | xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */ |
62 | uint qi_dqperchunk; /* # ondisk dq in above chunk */ |
63 | struct xfs_def_quota qi_usr_default; |
64 | struct xfs_def_quota qi_grp_default; |
65 | struct xfs_def_quota qi_prj_default; |
66 | struct shrinker *qi_shrinker; |
67 | |
68 | /* Minimum and maximum quota expiration timestamp values. */ |
69 | time64_t qi_expiry_min; |
70 | time64_t qi_expiry_max; |
71 | }; |
72 | |
73 | static inline struct radix_tree_root * |
74 | xfs_dquot_tree( |
75 | struct xfs_quotainfo *qi, |
76 | xfs_dqtype_t type) |
77 | { |
78 | switch (type) { |
79 | case XFS_DQTYPE_USER: |
80 | return &qi->qi_uquota_tree; |
81 | case XFS_DQTYPE_GROUP: |
82 | return &qi->qi_gquota_tree; |
83 | case XFS_DQTYPE_PROJ: |
84 | return &qi->qi_pquota_tree; |
85 | default: |
86 | ASSERT(0); |
87 | } |
88 | return NULL; |
89 | } |
90 | |
91 | static inline struct xfs_inode * |
92 | xfs_quota_inode(struct xfs_mount *mp, xfs_dqtype_t type) |
93 | { |
94 | switch (type) { |
95 | case XFS_DQTYPE_USER: |
96 | return mp->m_quotainfo->qi_uquotaip; |
97 | case XFS_DQTYPE_GROUP: |
98 | return mp->m_quotainfo->qi_gquotaip; |
99 | case XFS_DQTYPE_PROJ: |
100 | return mp->m_quotainfo->qi_pquotaip; |
101 | default: |
102 | ASSERT(0); |
103 | } |
104 | return NULL; |
105 | } |
106 | |
107 | extern void xfs_trans_mod_dquot(struct xfs_trans *tp, struct xfs_dquot *dqp, |
108 | uint field, int64_t delta); |
109 | extern void xfs_trans_dqjoin(struct xfs_trans *, struct xfs_dquot *); |
110 | extern void xfs_trans_log_dquot(struct xfs_trans *, struct xfs_dquot *); |
111 | |
112 | /* |
113 | * We keep the usr, grp, and prj dquots separately so that locking will be |
114 | * easier to do at commit time. All transactions that we know of at this point |
115 | * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value. |
116 | */ |
117 | enum { |
118 | XFS_QM_TRANS_USR = 0, |
119 | XFS_QM_TRANS_GRP, |
120 | XFS_QM_TRANS_PRJ, |
121 | XFS_QM_TRANS_DQTYPES |
122 | }; |
123 | #define XFS_QM_TRANS_MAXDQS 2 |
124 | struct xfs_dquot_acct { |
125 | struct xfs_dqtrx dqs[XFS_QM_TRANS_DQTYPES][XFS_QM_TRANS_MAXDQS]; |
126 | }; |
127 | |
128 | /* |
129 | * Users are allowed to have a usage exceeding their softlimit for |
130 | * a period this long. |
131 | */ |
132 | #define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */ |
133 | #define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */ |
134 | #define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */ |
135 | |
136 | extern void xfs_qm_destroy_quotainfo(struct xfs_mount *); |
137 | |
138 | /* quota ops */ |
139 | extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint); |
140 | extern int xfs_qm_scall_getquota(struct xfs_mount *mp, |
141 | xfs_dqid_t id, |
142 | xfs_dqtype_t type, |
143 | struct qc_dqblk *dst); |
144 | extern int xfs_qm_scall_getquota_next(struct xfs_mount *mp, |
145 | xfs_dqid_t *id, |
146 | xfs_dqtype_t type, |
147 | struct qc_dqblk *dst); |
148 | extern int xfs_qm_scall_setqlim(struct xfs_mount *mp, |
149 | xfs_dqid_t id, |
150 | xfs_dqtype_t type, |
151 | struct qc_dqblk *newlim); |
152 | extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint); |
153 | extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint); |
154 | |
155 | static inline struct xfs_def_quota * |
156 | xfs_get_defquota(struct xfs_quotainfo *qi, xfs_dqtype_t type) |
157 | { |
158 | switch (type) { |
159 | case XFS_DQTYPE_USER: |
160 | return &qi->qi_usr_default; |
161 | case XFS_DQTYPE_GROUP: |
162 | return &qi->qi_grp_default; |
163 | case XFS_DQTYPE_PROJ: |
164 | return &qi->qi_prj_default; |
165 | default: |
166 | ASSERT(0); |
167 | return NULL; |
168 | } |
169 | } |
170 | |
171 | #endif /* __XFS_QM_H__ */ |
172 | |