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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_QUOTA_H__
7#define __XFS_QUOTA_H__
8
9#include "xfs_quota_defs.h"
10
11/*
12 * Kernel only quota definitions and functions
13 */
14
15struct xfs_trans;
16struct xfs_buf;
17
18/*
19 * This check is done typically without holding the inode lock;
20 * that may seem racy, but it is harmless in the context that it is used.
21 * The inode cannot go inactive as long a reference is kept, and
22 * therefore if dquot(s) were attached, they'll stay consistent.
23 * If, for example, the ownership of the inode changes while
24 * we didn't have the inode locked, the appropriate dquot(s) will be
25 * attached atomically.
26 */
27#define XFS_NOT_DQATTACHED(mp, ip) \
28 ((XFS_IS_UQUOTA_ON(mp) && (ip)->i_udquot == NULL) || \
29 (XFS_IS_GQUOTA_ON(mp) && (ip)->i_gdquot == NULL) || \
30 (XFS_IS_PQUOTA_ON(mp) && (ip)->i_pdquot == NULL))
31
32#define XFS_QM_NEED_QUOTACHECK(mp) \
33 ((XFS_IS_UQUOTA_ON(mp) && \
34 (mp->m_sb.sb_qflags & XFS_UQUOTA_CHKD) == 0) || \
35 (XFS_IS_GQUOTA_ON(mp) && \
36 (mp->m_sb.sb_qflags & XFS_GQUOTA_CHKD) == 0) || \
37 (XFS_IS_PQUOTA_ON(mp) && \
38 (mp->m_sb.sb_qflags & XFS_PQUOTA_CHKD) == 0))
39
40static inline uint
41xfs_quota_chkd_flag(
42 xfs_dqtype_t type)
43{
44 switch (type) {
45 case XFS_DQTYPE_USER:
46 return XFS_UQUOTA_CHKD;
47 case XFS_DQTYPE_GROUP:
48 return XFS_GQUOTA_CHKD;
49 case XFS_DQTYPE_PROJ:
50 return XFS_PQUOTA_CHKD;
51 default:
52 return 0;
53 }
54}
55
56/*
57 * The structure kept inside the xfs_trans_t keep track of dquot changes
58 * within a transaction and apply them later.
59 */
60struct xfs_dqtrx {
61 struct xfs_dquot *qt_dquot; /* the dquot this refers to */
62
63 uint64_t qt_blk_res; /* blks reserved on a dquot */
64 int64_t qt_bcount_delta; /* dquot blk count changes */
65 int64_t qt_delbcnt_delta; /* delayed dquot blk count changes */
66
67 uint64_t qt_rtblk_res; /* # blks reserved on a dquot */
68 uint64_t qt_rtblk_res_used;/* # blks used from reservation */
69 int64_t qt_rtbcount_delta;/* dquot realtime blk changes */
70 int64_t qt_delrtb_delta; /* delayed RT blk count changes */
71
72 uint64_t qt_ino_res; /* inode reserved on a dquot */
73 uint64_t qt_ino_res_used; /* inodes used from the reservation */
74 int64_t qt_icount_delta; /* dquot inode count changes */
75};
76
77enum xfs_apply_dqtrx_type {
78 XFS_APPLY_DQTRX_COMMIT = 0,
79 XFS_APPLY_DQTRX_UNRESERVE,
80};
81
82/*
83 * Parameters for applying dqtrx changes to a dquot. The hook function arg
84 * parameter is enum xfs_apply_dqtrx_type.
85 */
86struct xfs_apply_dqtrx_params {
87 uintptr_t tx_id;
88 xfs_ino_t ino;
89 xfs_dqtype_t q_type;
90 xfs_dqid_t q_id;
91};
92
93#ifdef CONFIG_XFS_QUOTA
94extern void xfs_trans_dup_dqinfo(struct xfs_trans *, struct xfs_trans *);
95extern void xfs_trans_free_dqinfo(struct xfs_trans *);
96extern void xfs_trans_mod_dquot_byino(struct xfs_trans *, struct xfs_inode *,
97 uint, int64_t);
98extern void xfs_trans_apply_dquot_deltas(struct xfs_trans *);
99extern void xfs_trans_unreserve_and_mod_dquots(struct xfs_trans *);
100int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp, struct xfs_inode *ip,
101 int64_t dblocks, int64_t rblocks, bool force);
102extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *,
103 struct xfs_mount *, struct xfs_dquot *,
104 struct xfs_dquot *, struct xfs_dquot *, int64_t, long, uint);
105int xfs_trans_reserve_quota_icreate(struct xfs_trans *tp,
106 struct xfs_dquot *udqp, struct xfs_dquot *gdqp,
107 struct xfs_dquot *pdqp, int64_t dblocks);
108
109extern int xfs_qm_vop_dqalloc(struct xfs_inode *, kuid_t, kgid_t,
110 prid_t, uint, struct xfs_dquot **, struct xfs_dquot **,
111 struct xfs_dquot **);
112extern void xfs_qm_vop_create_dqattach(struct xfs_trans *, struct xfs_inode *,
113 struct xfs_dquot *, struct xfs_dquot *, struct xfs_dquot *);
114extern int xfs_qm_vop_rename_dqattach(struct xfs_inode **);
115extern struct xfs_dquot *xfs_qm_vop_chown(struct xfs_trans *,
116 struct xfs_inode *, struct xfs_dquot **, struct xfs_dquot *);
117extern int xfs_qm_dqattach(struct xfs_inode *);
118extern int xfs_qm_dqattach_locked(struct xfs_inode *ip, bool doalloc);
119extern void xfs_qm_dqdetach(struct xfs_inode *);
120extern void xfs_qm_dqrele(struct xfs_dquot *);
121extern void xfs_qm_statvfs(struct xfs_inode *, struct kstatfs *);
122extern int xfs_qm_newmount(struct xfs_mount *, uint *, uint *);
123extern void xfs_qm_mount_quotas(struct xfs_mount *);
124extern void xfs_qm_unmount(struct xfs_mount *);
125extern void xfs_qm_unmount_quotas(struct xfs_mount *);
126
127static inline int
128xfs_quota_reserve_blkres(struct xfs_inode *ip, int64_t blocks)
129{
130 return xfs_trans_reserve_quota_nblks(NULL, ip, blocks, 0, false);
131}
132bool xfs_inode_near_dquot_enforcement(struct xfs_inode *ip, xfs_dqtype_t type);
133
134# ifdef CONFIG_XFS_LIVE_HOOKS
135void xfs_trans_mod_ino_dquot(struct xfs_trans *tp, struct xfs_inode *ip,
136 struct xfs_dquot *dqp, unsigned int field, int64_t delta);
137
138struct xfs_quotainfo;
139
140struct xfs_dqtrx_hook {
141 struct xfs_hook mod_hook;
142 struct xfs_hook apply_hook;
143};
144
145void xfs_dqtrx_hook_disable(void);
146void xfs_dqtrx_hook_enable(void);
147
148int xfs_dqtrx_hook_add(struct xfs_quotainfo *qi, struct xfs_dqtrx_hook *hook);
149void xfs_dqtrx_hook_del(struct xfs_quotainfo *qi, struct xfs_dqtrx_hook *hook);
150void xfs_dqtrx_hook_setup(struct xfs_dqtrx_hook *hook, notifier_fn_t mod_fn,
151 notifier_fn_t apply_fn);
152# else
153# define xfs_trans_mod_ino_dquot(tp, ip, dqp, field, delta) \
154 xfs_trans_mod_dquot((tp), (dqp), (field), (delta))
155# endif /* CONFIG_XFS_LIVE_HOOKS */
156
157#else
158static inline int
159xfs_qm_vop_dqalloc(struct xfs_inode *ip, kuid_t kuid, kgid_t kgid,
160 prid_t prid, uint flags, struct xfs_dquot **udqp,
161 struct xfs_dquot **gdqp, struct xfs_dquot **pdqp)
162{
163 *udqp = NULL;
164 *gdqp = NULL;
165 *pdqp = NULL;
166 return 0;
167}
168#define xfs_trans_dup_dqinfo(tp, tp2)
169#define xfs_trans_free_dqinfo(tp)
170static inline void xfs_trans_mod_dquot_byino(struct xfs_trans *tp,
171 struct xfs_inode *ip, uint field, int64_t delta)
172{
173}
174#define xfs_trans_apply_dquot_deltas(tp)
175#define xfs_trans_unreserve_and_mod_dquots(tp)
176static inline int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp,
177 struct xfs_inode *ip, int64_t dblocks, int64_t rblocks,
178 bool force)
179{
180 return 0;
181}
182static inline int xfs_trans_reserve_quota_bydquots(struct xfs_trans *tp,
183 struct xfs_mount *mp, struct xfs_dquot *udqp,
184 struct xfs_dquot *gdqp, struct xfs_dquot *pdqp,
185 int64_t nblks, long nions, uint flags)
186{
187 return 0;
188}
189
190static inline int
191xfs_quota_reserve_blkres(struct xfs_inode *ip, int64_t blocks)
192{
193 return 0;
194}
195
196static inline int
197xfs_trans_reserve_quota_icreate(struct xfs_trans *tp, struct xfs_dquot *udqp,
198 struct xfs_dquot *gdqp, struct xfs_dquot *pdqp, int64_t dblocks)
199{
200 return 0;
201}
202
203#define xfs_qm_vop_create_dqattach(tp, ip, u, g, p)
204#define xfs_qm_vop_rename_dqattach(it) (0)
205#define xfs_qm_vop_chown(tp, ip, old, new) (NULL)
206#define xfs_qm_dqattach(ip) (0)
207#define xfs_qm_dqattach_locked(ip, fl) (0)
208#define xfs_qm_dqdetach(ip)
209#define xfs_qm_dqrele(d) do { (d) = (d); } while(0)
210#define xfs_qm_statvfs(ip, s) do { } while(0)
211#define xfs_qm_newmount(mp, a, b) (0)
212#define xfs_qm_mount_quotas(mp)
213#define xfs_qm_unmount(mp)
214#define xfs_qm_unmount_quotas(mp)
215#define xfs_inode_near_dquot_enforcement(ip, type) (false)
216
217# ifdef CONFIG_XFS_LIVE_HOOKS
218# define xfs_dqtrx_hook_enable() ((void)0)
219# define xfs_dqtrx_hook_disable() ((void)0)
220# endif /* CONFIG_XFS_LIVE_HOOKS */
221
222#endif /* CONFIG_XFS_QUOTA */
223
224static inline int
225xfs_quota_unreserve_blkres(struct xfs_inode *ip, int64_t blocks)
226{
227 return xfs_quota_reserve_blkres(ip, -blocks);
228}
229
230extern int xfs_mount_reset_sbqflags(struct xfs_mount *);
231
232#endif /* __XFS_QUOTA_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_QUOTA_H__
7#define __XFS_QUOTA_H__
8
9#include "xfs_quota_defs.h"
10
11/*
12 * Kernel only quota definitions and functions
13 */
14
15struct xfs_trans;
16struct xfs_buf;
17
18/*
19 * This check is done typically without holding the inode lock;
20 * that may seem racy, but it is harmless in the context that it is used.
21 * The inode cannot go inactive as long a reference is kept, and
22 * therefore if dquot(s) were attached, they'll stay consistent.
23 * If, for example, the ownership of the inode changes while
24 * we didn't have the inode locked, the appropriate dquot(s) will be
25 * attached atomically.
26 */
27#define XFS_NOT_DQATTACHED(mp, ip) \
28 ((XFS_IS_UQUOTA_ON(mp) && (ip)->i_udquot == NULL) || \
29 (XFS_IS_GQUOTA_ON(mp) && (ip)->i_gdquot == NULL) || \
30 (XFS_IS_PQUOTA_ON(mp) && (ip)->i_pdquot == NULL))
31
32#define XFS_QM_NEED_QUOTACHECK(mp) \
33 ((XFS_IS_UQUOTA_ON(mp) && \
34 (mp->m_sb.sb_qflags & XFS_UQUOTA_CHKD) == 0) || \
35 (XFS_IS_GQUOTA_ON(mp) && \
36 (mp->m_sb.sb_qflags & XFS_GQUOTA_CHKD) == 0) || \
37 (XFS_IS_PQUOTA_ON(mp) && \
38 (mp->m_sb.sb_qflags & XFS_PQUOTA_CHKD) == 0))
39
40static inline uint
41xfs_quota_chkd_flag(
42 xfs_dqtype_t type)
43{
44 switch (type) {
45 case XFS_DQTYPE_USER:
46 return XFS_UQUOTA_CHKD;
47 case XFS_DQTYPE_GROUP:
48 return XFS_GQUOTA_CHKD;
49 case XFS_DQTYPE_PROJ:
50 return XFS_PQUOTA_CHKD;
51 default:
52 return 0;
53 }
54}
55
56/*
57 * The structure kept inside the xfs_trans_t keep track of dquot changes
58 * within a transaction and apply them later.
59 */
60struct xfs_dqtrx {
61 struct xfs_dquot *qt_dquot; /* the dquot this refers to */
62
63 uint64_t qt_blk_res; /* blks reserved on a dquot */
64 int64_t qt_bcount_delta; /* dquot blk count changes */
65 int64_t qt_delbcnt_delta; /* delayed dquot blk count changes */
66
67 uint64_t qt_rtblk_res; /* # blks reserved on a dquot */
68 uint64_t qt_rtblk_res_used;/* # blks used from reservation */
69 int64_t qt_rtbcount_delta;/* dquot realtime blk changes */
70 int64_t qt_delrtb_delta; /* delayed RT blk count changes */
71
72 uint64_t qt_ino_res; /* inode reserved on a dquot */
73 uint64_t qt_ino_res_used; /* inodes used from the reservation */
74 int64_t qt_icount_delta; /* dquot inode count changes */
75};
76
77#ifdef CONFIG_XFS_QUOTA
78extern void xfs_trans_dup_dqinfo(struct xfs_trans *, struct xfs_trans *);
79extern void xfs_trans_free_dqinfo(struct xfs_trans *);
80extern void xfs_trans_mod_dquot_byino(struct xfs_trans *, struct xfs_inode *,
81 uint, int64_t);
82extern void xfs_trans_apply_dquot_deltas(struct xfs_trans *);
83extern void xfs_trans_unreserve_and_mod_dquots(struct xfs_trans *);
84int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp, struct xfs_inode *ip,
85 int64_t dblocks, int64_t rblocks, bool force);
86extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *,
87 struct xfs_mount *, struct xfs_dquot *,
88 struct xfs_dquot *, struct xfs_dquot *, int64_t, long, uint);
89int xfs_trans_reserve_quota_icreate(struct xfs_trans *tp,
90 struct xfs_dquot *udqp, struct xfs_dquot *gdqp,
91 struct xfs_dquot *pdqp, int64_t dblocks);
92
93extern int xfs_qm_vop_dqalloc(struct xfs_inode *, kuid_t, kgid_t,
94 prid_t, uint, struct xfs_dquot **, struct xfs_dquot **,
95 struct xfs_dquot **);
96extern void xfs_qm_vop_create_dqattach(struct xfs_trans *, struct xfs_inode *,
97 struct xfs_dquot *, struct xfs_dquot *, struct xfs_dquot *);
98extern int xfs_qm_vop_rename_dqattach(struct xfs_inode **);
99extern struct xfs_dquot *xfs_qm_vop_chown(struct xfs_trans *,
100 struct xfs_inode *, struct xfs_dquot **, struct xfs_dquot *);
101extern int xfs_qm_dqattach(struct xfs_inode *);
102extern int xfs_qm_dqattach_locked(struct xfs_inode *ip, bool doalloc);
103extern void xfs_qm_dqdetach(struct xfs_inode *);
104extern void xfs_qm_dqrele(struct xfs_dquot *);
105extern void xfs_qm_statvfs(struct xfs_inode *, struct kstatfs *);
106extern int xfs_qm_newmount(struct xfs_mount *, uint *, uint *);
107extern void xfs_qm_mount_quotas(struct xfs_mount *);
108extern void xfs_qm_unmount(struct xfs_mount *);
109extern void xfs_qm_unmount_quotas(struct xfs_mount *);
110
111static inline int
112xfs_quota_reserve_blkres(struct xfs_inode *ip, int64_t blocks)
113{
114 return xfs_trans_reserve_quota_nblks(NULL, ip, blocks, 0, false);
115}
116bool xfs_inode_near_dquot_enforcement(struct xfs_inode *ip, xfs_dqtype_t type);
117#else
118static inline int
119xfs_qm_vop_dqalloc(struct xfs_inode *ip, kuid_t kuid, kgid_t kgid,
120 prid_t prid, uint flags, struct xfs_dquot **udqp,
121 struct xfs_dquot **gdqp, struct xfs_dquot **pdqp)
122{
123 *udqp = NULL;
124 *gdqp = NULL;
125 *pdqp = NULL;
126 return 0;
127}
128#define xfs_trans_dup_dqinfo(tp, tp2)
129#define xfs_trans_free_dqinfo(tp)
130static inline void xfs_trans_mod_dquot_byino(struct xfs_trans *tp,
131 struct xfs_inode *ip, uint field, int64_t delta)
132{
133}
134#define xfs_trans_apply_dquot_deltas(tp)
135#define xfs_trans_unreserve_and_mod_dquots(tp)
136static inline int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp,
137 struct xfs_inode *ip, int64_t dblocks, int64_t rblocks,
138 bool force)
139{
140 return 0;
141}
142static inline int xfs_trans_reserve_quota_bydquots(struct xfs_trans *tp,
143 struct xfs_mount *mp, struct xfs_dquot *udqp,
144 struct xfs_dquot *gdqp, struct xfs_dquot *pdqp,
145 int64_t nblks, long nions, uint flags)
146{
147 return 0;
148}
149
150static inline int
151xfs_quota_reserve_blkres(struct xfs_inode *ip, int64_t blocks)
152{
153 return 0;
154}
155
156static inline int
157xfs_trans_reserve_quota_icreate(struct xfs_trans *tp, struct xfs_dquot *udqp,
158 struct xfs_dquot *gdqp, struct xfs_dquot *pdqp, int64_t dblocks)
159{
160 return 0;
161}
162
163#define xfs_qm_vop_create_dqattach(tp, ip, u, g, p)
164#define xfs_qm_vop_rename_dqattach(it) (0)
165#define xfs_qm_vop_chown(tp, ip, old, new) (NULL)
166#define xfs_qm_dqattach(ip) (0)
167#define xfs_qm_dqattach_locked(ip, fl) (0)
168#define xfs_qm_dqdetach(ip)
169#define xfs_qm_dqrele(d) do { (d) = (d); } while(0)
170#define xfs_qm_statvfs(ip, s) do { } while(0)
171#define xfs_qm_newmount(mp, a, b) (0)
172#define xfs_qm_mount_quotas(mp)
173#define xfs_qm_unmount(mp)
174#define xfs_qm_unmount_quotas(mp)
175#define xfs_inode_near_dquot_enforcement(ip, type) (false)
176#endif /* CONFIG_XFS_QUOTA */
177
178static inline int
179xfs_quota_unreserve_blkres(struct xfs_inode *ip, int64_t blocks)
180{
181 return xfs_quota_reserve_blkres(ip, -blocks);
182}
183
184extern int xfs_mount_reset_sbqflags(struct xfs_mount *);
185
186#endif /* __XFS_QUOTA_H__ */