1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2000-2005 Silicon Graphics, Inc.
* All Rights Reserved.
*/
#ifndef __XFS_QUOTA_H__
#define __XFS_QUOTA_H__
#include "xfs_quota_defs.h"
/*
* Kernel only quota definitions and functions
*/
struct xfs_trans;
/*
* This check is done typically without holding the inode lock;
* that may seem racy, but it is harmless in the context that it is used.
* The inode cannot go inactive as long a reference is kept, and
* therefore if dquot(s) were attached, they'll stay consistent.
* If, for example, the ownership of the inode changes while
* we didn't have the inode locked, the appropriate dquot(s) will be
* attached atomically.
*/
#define XFS_NOT_DQATTACHED(mp, ip) \
((XFS_IS_UQUOTA_ON(mp) && (ip)->i_udquot == NULL) || \
(XFS_IS_GQUOTA_ON(mp) && (ip)->i_gdquot == NULL) || \
(XFS_IS_PQUOTA_ON(mp) && (ip)->i_pdquot == NULL))
#define XFS_QM_NEED_QUOTACHECK(mp) \
((XFS_IS_UQUOTA_ON(mp) && \
(mp->m_sb.sb_qflags & XFS_UQUOTA_CHKD) == 0) || \
(XFS_IS_GQUOTA_ON(mp) && \
(mp->m_sb.sb_qflags & XFS_GQUOTA_CHKD) == 0) || \
(XFS_IS_PQUOTA_ON(mp) && \
(mp->m_sb.sb_qflags & XFS_PQUOTA_CHKD) == 0))
static inline uint
xfs_quota_chkd_flag(
uint dqtype)
{
switch (dqtype) {
case XFS_DQ_USER:
return XFS_UQUOTA_CHKD;
case XFS_DQ_GROUP:
return XFS_GQUOTA_CHKD;
case XFS_DQ_PROJ:
return XFS_PQUOTA_CHKD;
default:
return 0;
}
}
/*
* The structure kept inside the xfs_trans_t keep track of dquot changes
* within a transaction and apply them later.
*/
typedef struct xfs_dqtrx {
struct xfs_dquot *qt_dquot; /* the dquot this refers to */
ulong qt_blk_res; /* blks reserved on a dquot */
ulong qt_ino_res; /* inode reserved on a dquot */
ulong qt_ino_res_used; /* inodes used from the reservation */
long qt_bcount_delta; /* dquot blk count changes */
long qt_delbcnt_delta; /* delayed dquot blk count changes */
long qt_icount_delta; /* dquot inode count changes */
ulong qt_rtblk_res; /* # blks reserved on a dquot */
ulong qt_rtblk_res_used;/* # blks used from reservation */
long qt_rtbcount_delta;/* dquot realtime blk changes */
long qt_delrtb_delta; /* delayed RT blk count changes */
} xfs_dqtrx_t;
#ifdef CONFIG_XFS_QUOTA
extern void xfs_trans_dup_dqinfo(struct xfs_trans *, struct xfs_trans *);
extern void xfs_trans_free_dqinfo(struct xfs_trans *);
extern void xfs_trans_mod_dquot_byino(struct xfs_trans *, struct xfs_inode *,
uint, long);
extern void xfs_trans_apply_dquot_deltas(struct xfs_trans *);
extern void xfs_trans_unreserve_and_mod_dquots(struct xfs_trans *);
extern int xfs_trans_reserve_quota_nblks(struct xfs_trans *,
struct xfs_inode *, long, long, uint);
extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *,
struct xfs_mount *, struct xfs_dquot *,
struct xfs_dquot *, struct xfs_dquot *, long, long, uint);
extern int xfs_qm_vop_dqalloc(struct xfs_inode *, xfs_dqid_t, xfs_dqid_t,
prid_t, uint, struct xfs_dquot **, struct xfs_dquot **,
struct xfs_dquot **);
extern void xfs_qm_vop_create_dqattach(struct xfs_trans *, struct xfs_inode *,
struct xfs_dquot *, struct xfs_dquot *, struct xfs_dquot *);
extern int xfs_qm_vop_rename_dqattach(struct xfs_inode **);
extern struct xfs_dquot *xfs_qm_vop_chown(struct xfs_trans *,
struct xfs_inode *, struct xfs_dquot **, struct xfs_dquot *);
extern int xfs_qm_vop_chown_reserve(struct xfs_trans *, struct xfs_inode *,
struct xfs_dquot *, struct xfs_dquot *,
struct xfs_dquot *, uint);
extern int xfs_qm_dqattach(struct xfs_inode *);
extern int xfs_qm_dqattach_locked(struct xfs_inode *ip, bool doalloc);
extern void xfs_qm_dqdetach(struct xfs_inode *);
extern void xfs_qm_dqrele(struct xfs_dquot *);
extern void xfs_qm_statvfs(struct xfs_inode *, struct kstatfs *);
extern int xfs_qm_newmount(struct xfs_mount *, uint *, uint *);
extern void xfs_qm_mount_quotas(struct xfs_mount *);
extern void xfs_qm_unmount(struct xfs_mount *);
extern void xfs_qm_unmount_quotas(struct xfs_mount *);
#else
static inline int
xfs_qm_vop_dqalloc(struct xfs_inode *ip, xfs_dqid_t uid, xfs_dqid_t gid,
prid_t prid, uint flags, struct xfs_dquot **udqp,
struct xfs_dquot **gdqp, struct xfs_dquot **pdqp)
{
*udqp = NULL;
*gdqp = NULL;
*pdqp = NULL;
return 0;
}
#define xfs_trans_dup_dqinfo(tp, tp2)
#define xfs_trans_free_dqinfo(tp)
#define xfs_trans_mod_dquot_byino(tp, ip, fields, delta)
#define xfs_trans_apply_dquot_deltas(tp)
#define xfs_trans_unreserve_and_mod_dquots(tp)
static inline int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp,
struct xfs_inode *ip, long nblks, long ninos, uint flags)
{
return 0;
}
static inline int xfs_trans_reserve_quota_bydquots(struct xfs_trans *tp,
struct xfs_mount *mp, struct xfs_dquot *udqp,
struct xfs_dquot *gdqp, struct xfs_dquot *pdqp,
long nblks, long nions, uint flags)
{
return 0;
}
#define xfs_qm_vop_create_dqattach(tp, ip, u, g, p)
#define xfs_qm_vop_rename_dqattach(it) (0)
#define xfs_qm_vop_chown(tp, ip, old, new) (NULL)
#define xfs_qm_vop_chown_reserve(tp, ip, u, g, p, fl) (0)
#define xfs_qm_dqattach(ip) (0)
#define xfs_qm_dqattach_locked(ip, fl) (0)
#define xfs_qm_dqdetach(ip)
#define xfs_qm_dqrele(d)
#define xfs_qm_statvfs(ip, s)
#define xfs_qm_newmount(mp, a, b) (0)
#define xfs_qm_mount_quotas(mp)
#define xfs_qm_unmount(mp)
#define xfs_qm_unmount_quotas(mp)
#endif /* CONFIG_XFS_QUOTA */
#define xfs_trans_unreserve_quota_nblks(tp, ip, nblks, ninos, flags) \
xfs_trans_reserve_quota_nblks(tp, ip, -(nblks), -(ninos), flags)
#define xfs_trans_reserve_quota(tp, mp, ud, gd, pd, nb, ni, f) \
xfs_trans_reserve_quota_bydquots(tp, mp, ud, gd, pd, nb, ni, \
f | XFS_QMOPT_RES_REGBLKS)
extern int xfs_mount_reset_sbqflags(struct xfs_mount *);
#endif /* __XFS_QUOTA_H__ */
|
