1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
6 #ifndef __XFS_QUOTA_H__
7 #define __XFS_QUOTA_H__
9 #include "xfs_quota_defs.h"
12 * Kernel only quota definitions and functions
18 * This check is done typically without holding the inode lock;
19 * that may seem racy, but it is harmless in the context that it is used.
20 * The inode cannot go inactive as long a reference is kept, and
21 * therefore if dquot(s) were attached, they'll stay consistent.
22 * If, for example, the ownership of the inode changes while
23 * we didn't have the inode locked, the appropriate dquot(s) will be
24 * attached atomically.
26 #define XFS_NOT_DQATTACHED(mp, ip) \
27 ((XFS_IS_UQUOTA_ON(mp) && (ip)->i_udquot == NULL) || \
28 (XFS_IS_GQUOTA_ON(mp) && (ip)->i_gdquot == NULL) || \
29 (XFS_IS_PQUOTA_ON(mp) && (ip)->i_pdquot == NULL))
31 #define XFS_QM_NEED_QUOTACHECK(mp) \
32 ((XFS_IS_UQUOTA_ON(mp) && \
33 (mp->m_sb.sb_qflags & XFS_UQUOTA_CHKD) == 0) || \
34 (XFS_IS_GQUOTA_ON(mp) && \
35 (mp->m_sb.sb_qflags & XFS_GQUOTA_CHKD) == 0) || \
36 (XFS_IS_PQUOTA_ON(mp) && \
37 (mp->m_sb.sb_qflags & XFS_PQUOTA_CHKD) == 0))
45 return XFS_UQUOTA_CHKD;
47 return XFS_GQUOTA_CHKD;
49 return XFS_PQUOTA_CHKD;
56 * The structure kept inside the xfs_trans_t keep track of dquot changes
57 * within a transaction and apply them later.
60 struct xfs_dquot *qt_dquot; /* the dquot this refers to */
62 uint64_t qt_blk_res; /* blks reserved on a dquot */
63 int64_t qt_bcount_delta; /* dquot blk count changes */
64 int64_t qt_delbcnt_delta; /* delayed dquot blk count changes */
66 uint64_t qt_rtblk_res; /* # blks reserved on a dquot */
67 uint64_t qt_rtblk_res_used;/* # blks used from reservation */
68 int64_t qt_rtbcount_delta;/* dquot realtime blk changes */
69 int64_t qt_delrtb_delta; /* delayed RT blk count changes */
71 uint64_t qt_ino_res; /* inode reserved on a dquot */
72 uint64_t qt_ino_res_used; /* inodes used from the reservation */
73 int64_t qt_icount_delta; /* dquot inode count changes */
76 #ifdef CONFIG_XFS_QUOTA
77 extern void xfs_trans_dup_dqinfo(struct xfs_trans *, struct xfs_trans *);
78 extern void xfs_trans_free_dqinfo(struct xfs_trans *);
79 extern void xfs_trans_mod_dquot_byino(struct xfs_trans *, struct xfs_inode *,
81 extern void xfs_trans_apply_dquot_deltas(struct xfs_trans *);
82 extern void xfs_trans_unreserve_and_mod_dquots(struct xfs_trans *);
83 extern int xfs_trans_reserve_quota_nblks(struct xfs_trans *,
84 struct xfs_inode *, int64_t, long, uint);
85 extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *,
86 struct xfs_mount *, struct xfs_dquot *,
87 struct xfs_dquot *, struct xfs_dquot *, int64_t, long, uint);
89 extern int xfs_qm_vop_dqalloc(struct xfs_inode *, xfs_dqid_t, xfs_dqid_t,
90 prid_t, uint, struct xfs_dquot **, struct xfs_dquot **,
92 extern void xfs_qm_vop_create_dqattach(struct xfs_trans *, struct xfs_inode *,
93 struct xfs_dquot *, struct xfs_dquot *, struct xfs_dquot *);
94 extern int xfs_qm_vop_rename_dqattach(struct xfs_inode **);
95 extern struct xfs_dquot *xfs_qm_vop_chown(struct xfs_trans *,
96 struct xfs_inode *, struct xfs_dquot **, struct xfs_dquot *);
97 extern int xfs_qm_vop_chown_reserve(struct xfs_trans *, struct xfs_inode *,
98 struct xfs_dquot *, struct xfs_dquot *,
99 struct xfs_dquot *, uint);
100 extern int xfs_qm_dqattach(struct xfs_inode *);
101 extern int xfs_qm_dqattach_locked(struct xfs_inode *ip, bool doalloc);
102 extern void xfs_qm_dqdetach(struct xfs_inode *);
103 extern void xfs_qm_dqrele(struct xfs_dquot *);
104 extern void xfs_qm_statvfs(struct xfs_inode *, struct kstatfs *);
105 extern int xfs_qm_newmount(struct xfs_mount *, uint *, uint *);
106 extern void xfs_qm_mount_quotas(struct xfs_mount *);
107 extern void xfs_qm_unmount(struct xfs_mount *);
108 extern void xfs_qm_unmount_quotas(struct xfs_mount *);
112 xfs_qm_vop_dqalloc(struct xfs_inode *ip, xfs_dqid_t uid, xfs_dqid_t gid,
113 prid_t prid, uint flags, struct xfs_dquot **udqp,
114 struct xfs_dquot **gdqp, struct xfs_dquot **pdqp)
121 #define xfs_trans_dup_dqinfo(tp, tp2)
122 #define xfs_trans_free_dqinfo(tp)
123 #define xfs_trans_mod_dquot_byino(tp, ip, fields, delta)
124 #define xfs_trans_apply_dquot_deltas(tp)
125 #define xfs_trans_unreserve_and_mod_dquots(tp)
126 static inline int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp,
127 struct xfs_inode *ip, int64_t nblks, long ninos, uint flags)
131 static inline int xfs_trans_reserve_quota_bydquots(struct xfs_trans *tp,
132 struct xfs_mount *mp, struct xfs_dquot *udqp,
133 struct xfs_dquot *gdqp, struct xfs_dquot *pdqp,
134 int64_t nblks, long nions, uint flags)
138 #define xfs_qm_vop_create_dqattach(tp, ip, u, g, p)
139 #define xfs_qm_vop_rename_dqattach(it) (0)
140 #define xfs_qm_vop_chown(tp, ip, old, new) (NULL)
141 #define xfs_qm_vop_chown_reserve(tp, ip, u, g, p, fl) (0)
142 #define xfs_qm_dqattach(ip) (0)
143 #define xfs_qm_dqattach_locked(ip, fl) (0)
144 #define xfs_qm_dqdetach(ip)
145 #define xfs_qm_dqrele(d)
146 #define xfs_qm_statvfs(ip, s)
147 #define xfs_qm_newmount(mp, a, b) (0)
148 #define xfs_qm_mount_quotas(mp)
149 #define xfs_qm_unmount(mp)
150 #define xfs_qm_unmount_quotas(mp)
151 #endif /* CONFIG_XFS_QUOTA */
153 #define xfs_trans_unreserve_quota_nblks(tp, ip, nblks, ninos, flags) \
154 xfs_trans_reserve_quota_nblks(tp, ip, -(nblks), -(ninos), flags)
155 #define xfs_trans_reserve_quota(tp, mp, ud, gd, pd, nb, ni, f) \
156 xfs_trans_reserve_quota_bydquots(tp, mp, ud, gd, pd, nb, ni, \
157 f | XFS_QMOPT_RES_REGBLKS)
159 extern int xfs_mount_reset_sbqflags(struct xfs_mount *);
161 #endif /* __XFS_QUOTA_H__ */