Loading...
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_IS_DQDETACHED(ip) \
33 ((ip)->i_udquot == NULL && \
34 (ip)->i_gdquot == NULL && \
35 (ip)->i_pdquot == NULL)
36
37#define XFS_QM_NEED_QUOTACHECK(mp) \
38 ((XFS_IS_UQUOTA_ON(mp) && \
39 (mp->m_sb.sb_qflags & XFS_UQUOTA_CHKD) == 0) || \
40 (XFS_IS_GQUOTA_ON(mp) && \
41 (mp->m_sb.sb_qflags & XFS_GQUOTA_CHKD) == 0) || \
42 (XFS_IS_PQUOTA_ON(mp) && \
43 (mp->m_sb.sb_qflags & XFS_PQUOTA_CHKD) == 0))
44
45static inline uint
46xfs_quota_chkd_flag(
47 xfs_dqtype_t type)
48{
49 switch (type) {
50 case XFS_DQTYPE_USER:
51 return XFS_UQUOTA_CHKD;
52 case XFS_DQTYPE_GROUP:
53 return XFS_GQUOTA_CHKD;
54 case XFS_DQTYPE_PROJ:
55 return XFS_PQUOTA_CHKD;
56 default:
57 return 0;
58 }
59}
60
61/*
62 * The structure kept inside the xfs_trans_t keep track of dquot changes
63 * within a transaction and apply them later.
64 */
65struct xfs_dqtrx {
66 struct xfs_dquot *qt_dquot; /* the dquot this refers to */
67
68 uint64_t qt_blk_res; /* blks reserved on a dquot */
69 int64_t qt_bcount_delta; /* dquot blk count changes */
70 int64_t qt_delbcnt_delta; /* delayed dquot blk count changes */
71
72 uint64_t qt_rtblk_res; /* # blks reserved on a dquot */
73 uint64_t qt_rtblk_res_used;/* # blks used from reservation */
74 int64_t qt_rtbcount_delta;/* dquot realtime blk changes */
75 int64_t qt_delrtb_delta; /* delayed RT blk count changes */
76
77 uint64_t qt_ino_res; /* inode reserved on a dquot */
78 uint64_t qt_ino_res_used; /* inodes used from the reservation */
79 int64_t qt_icount_delta; /* dquot inode count changes */
80};
81
82enum xfs_apply_dqtrx_type {
83 XFS_APPLY_DQTRX_COMMIT = 0,
84 XFS_APPLY_DQTRX_UNRESERVE,
85};
86
87/*
88 * Parameters for applying dqtrx changes to a dquot. The hook function arg
89 * parameter is enum xfs_apply_dqtrx_type.
90 */
91struct xfs_apply_dqtrx_params {
92 uintptr_t tx_id;
93 xfs_ino_t ino;
94 xfs_dqtype_t q_type;
95 xfs_dqid_t q_id;
96};
97
98#ifdef CONFIG_XFS_QUOTA
99extern void xfs_trans_dup_dqinfo(struct xfs_trans *, struct xfs_trans *);
100extern void xfs_trans_free_dqinfo(struct xfs_trans *);
101extern void xfs_trans_mod_dquot_byino(struct xfs_trans *, struct xfs_inode *,
102 uint, int64_t);
103extern void xfs_trans_apply_dquot_deltas(struct xfs_trans *);
104void xfs_trans_unreserve_and_mod_dquots(struct xfs_trans *tp,
105 bool already_locked);
106int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp, struct xfs_inode *ip,
107 int64_t dblocks, int64_t rblocks, bool force);
108extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *,
109 struct xfs_mount *, struct xfs_dquot *,
110 struct xfs_dquot *, struct xfs_dquot *, int64_t, long, uint);
111int xfs_trans_reserve_quota_icreate(struct xfs_trans *tp,
112 struct xfs_dquot *udqp, struct xfs_dquot *gdqp,
113 struct xfs_dquot *pdqp, int64_t dblocks);
114
115extern int xfs_qm_vop_dqalloc(struct xfs_inode *, kuid_t, kgid_t,
116 prid_t, uint, struct xfs_dquot **, struct xfs_dquot **,
117 struct xfs_dquot **);
118extern void xfs_qm_vop_create_dqattach(struct xfs_trans *, struct xfs_inode *,
119 struct xfs_dquot *, struct xfs_dquot *, struct xfs_dquot *);
120extern int xfs_qm_vop_rename_dqattach(struct xfs_inode **);
121extern struct xfs_dquot *xfs_qm_vop_chown(struct xfs_trans *,
122 struct xfs_inode *, struct xfs_dquot **, struct xfs_dquot *);
123extern int xfs_qm_dqattach(struct xfs_inode *);
124extern int xfs_qm_dqattach_locked(struct xfs_inode *ip, bool doalloc);
125extern void xfs_qm_dqdetach(struct xfs_inode *);
126extern void xfs_qm_dqrele(struct xfs_dquot *);
127extern void xfs_qm_statvfs(struct xfs_inode *, struct kstatfs *);
128extern int xfs_qm_newmount(struct xfs_mount *, uint *, uint *);
129void xfs_qm_resume_quotaon(struct xfs_mount *mp);
130extern void xfs_qm_mount_quotas(struct xfs_mount *);
131extern void xfs_qm_unmount(struct xfs_mount *);
132extern void xfs_qm_unmount_quotas(struct xfs_mount *);
133bool xfs_inode_near_dquot_enforcement(struct xfs_inode *ip, xfs_dqtype_t type);
134int xfs_quota_reserve_blkres(struct xfs_inode *ip, int64_t blocks);
135
136# ifdef CONFIG_XFS_LIVE_HOOKS
137void xfs_trans_mod_ino_dquot(struct xfs_trans *tp, struct xfs_inode *ip,
138 struct xfs_dquot *dqp, unsigned int field, int64_t delta);
139
140struct xfs_quotainfo;
141
142struct xfs_dqtrx_hook {
143 struct xfs_hook mod_hook;
144 struct xfs_hook apply_hook;
145};
146
147void xfs_dqtrx_hook_disable(void);
148void xfs_dqtrx_hook_enable(void);
149
150int xfs_dqtrx_hook_add(struct xfs_quotainfo *qi, struct xfs_dqtrx_hook *hook);
151void xfs_dqtrx_hook_del(struct xfs_quotainfo *qi, struct xfs_dqtrx_hook *hook);
152void xfs_dqtrx_hook_setup(struct xfs_dqtrx_hook *hook, notifier_fn_t mod_fn,
153 notifier_fn_t apply_fn);
154# else
155# define xfs_trans_mod_ino_dquot(tp, ip, dqp, field, delta) \
156 xfs_trans_mod_dquot((tp), (dqp), (field), (delta))
157# endif /* CONFIG_XFS_LIVE_HOOKS */
158
159#else
160static inline int
161xfs_qm_vop_dqalloc(struct xfs_inode *ip, kuid_t kuid, kgid_t kgid,
162 prid_t prid, uint flags, struct xfs_dquot **udqp,
163 struct xfs_dquot **gdqp, struct xfs_dquot **pdqp)
164{
165 *udqp = NULL;
166 *gdqp = NULL;
167 *pdqp = NULL;
168 return 0;
169}
170#define xfs_trans_dup_dqinfo(tp, tp2)
171#define xfs_trans_free_dqinfo(tp)
172static inline void xfs_trans_mod_dquot_byino(struct xfs_trans *tp,
173 struct xfs_inode *ip, uint field, int64_t delta)
174{
175}
176#define xfs_trans_apply_dquot_deltas(tp)
177#define xfs_trans_unreserve_and_mod_dquots(tp, a)
178static inline int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp,
179 struct xfs_inode *ip, int64_t dblocks, int64_t rblocks,
180 bool force)
181{
182 return 0;
183}
184static inline int xfs_trans_reserve_quota_bydquots(struct xfs_trans *tp,
185 struct xfs_mount *mp, struct xfs_dquot *udqp,
186 struct xfs_dquot *gdqp, struct xfs_dquot *pdqp,
187 int64_t nblks, long nions, uint flags)
188{
189 return 0;
190}
191
192static inline int
193xfs_trans_reserve_quota_icreate(struct xfs_trans *tp, struct xfs_dquot *udqp,
194 struct xfs_dquot *gdqp, struct xfs_dquot *pdqp, int64_t dblocks)
195{
196 return 0;
197}
198
199#define xfs_qm_vop_create_dqattach(tp, ip, u, g, p)
200#define xfs_qm_vop_rename_dqattach(it) (0)
201#define xfs_qm_vop_chown(tp, ip, old, new) (NULL)
202#define xfs_qm_dqattach(ip) (0)
203#define xfs_qm_dqattach_locked(ip, fl) (0)
204#define xfs_qm_dqdetach(ip)
205#define xfs_qm_dqrele(d) do { (d) = (d); } while(0)
206#define xfs_qm_statvfs(ip, s) do { } while(0)
207#define xfs_qm_newmount(mp, a, b) (0)
208#define xfs_qm_resume_quotaon(mp) ((void)0)
209#define xfs_qm_mount_quotas(mp)
210#define xfs_qm_unmount(mp)
211#define xfs_qm_unmount_quotas(mp)
212#define xfs_inode_near_dquot_enforcement(ip, type) (false)
213
214static inline int xfs_quota_reserve_blkres(struct xfs_inode *ip, int64_t blocks)
215{
216 return 0;
217}
218
219# ifdef CONFIG_XFS_LIVE_HOOKS
220# define xfs_dqtrx_hook_enable() ((void)0)
221# define xfs_dqtrx_hook_disable() ((void)0)
222# endif /* CONFIG_XFS_LIVE_HOOKS */
223
224#endif /* CONFIG_XFS_QUOTA */
225
226static inline void
227xfs_quota_unreserve_blkres(struct xfs_inode *ip, uint64_t blocks)
228{
229 /* don't return an error as unreserving quotas can't fail */
230 xfs_quota_reserve_blkres(ip, -(int64_t)blocks);
231}
232
233extern int xfs_mount_reset_sbqflags(struct xfs_mount *);
234
235#endif /* __XFS_QUOTA_H__ */