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
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.
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))
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))
46 return XFS_UQUOTA_CHKD;
47 case XFS_DQTYPE_GROUP:
48 return XFS_GQUOTA_CHKD;
50 return XFS_PQUOTA_CHKD;
57 * The structure kept inside the xfs_trans_t keep track of dquot changes
58 * within a transaction and apply them later.
61 struct xfs_dquot *qt_dquot; /* the dquot this refers to */
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 */
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 */
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 */
77 enum xfs_apply_dqtrx_type {
78 XFS_APPLY_DQTRX_COMMIT = 0,
79 XFS_APPLY_DQTRX_UNRESERVE,
83 * Parameters for applying dqtrx changes to a dquot. The hook function arg
84 * parameter is enum xfs_apply_dqtrx_type.
86 struct xfs_apply_dqtrx_params {
93 #ifdef CONFIG_XFS_QUOTA
94 extern void xfs_trans_dup_dqinfo(struct xfs_trans *, struct xfs_trans *);
95 extern void xfs_trans_free_dqinfo(struct xfs_trans *);
96 extern void xfs_trans_mod_dquot_byino(struct xfs_trans *, struct xfs_inode *,
98 extern void xfs_trans_apply_dquot_deltas(struct xfs_trans *);
99 extern void xfs_trans_unreserve_and_mod_dquots(struct xfs_trans *);
100 int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp, struct xfs_inode *ip,
101 int64_t dblocks, int64_t rblocks, bool force);
102 extern 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);
105 int 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);
109 extern 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 **);
112 extern void xfs_qm_vop_create_dqattach(struct xfs_trans *, struct xfs_inode *,
113 struct xfs_dquot *, struct xfs_dquot *, struct xfs_dquot *);
114 extern int xfs_qm_vop_rename_dqattach(struct xfs_inode **);
115 extern struct xfs_dquot *xfs_qm_vop_chown(struct xfs_trans *,
116 struct xfs_inode *, struct xfs_dquot **, struct xfs_dquot *);
117 extern int xfs_qm_dqattach(struct xfs_inode *);
118 extern int xfs_qm_dqattach_locked(struct xfs_inode *ip, bool doalloc);
119 extern void xfs_qm_dqdetach(struct xfs_inode *);
120 extern void xfs_qm_dqrele(struct xfs_dquot *);
121 extern void xfs_qm_statvfs(struct xfs_inode *, struct kstatfs *);
122 extern int xfs_qm_newmount(struct xfs_mount *, uint *, uint *);
123 extern void xfs_qm_mount_quotas(struct xfs_mount *);
124 extern void xfs_qm_unmount(struct xfs_mount *);
125 extern void xfs_qm_unmount_quotas(struct xfs_mount *);
128 xfs_quota_reserve_blkres(struct xfs_inode *ip, int64_t blocks)
130 return xfs_trans_reserve_quota_nblks(NULL, ip, blocks, 0, false);
132 bool xfs_inode_near_dquot_enforcement(struct xfs_inode *ip, xfs_dqtype_t type);
134 # ifdef CONFIG_XFS_LIVE_HOOKS
135 void xfs_trans_mod_ino_dquot(struct xfs_trans *tp, struct xfs_inode *ip,
136 struct xfs_dquot *dqp, unsigned int field, int64_t delta);
138 struct xfs_quotainfo;
140 struct xfs_dqtrx_hook {
141 struct xfs_hook mod_hook;
142 struct xfs_hook apply_hook;
145 void xfs_dqtrx_hook_disable(void);
146 void xfs_dqtrx_hook_enable(void);
148 int xfs_dqtrx_hook_add(struct xfs_quotainfo *qi, struct xfs_dqtrx_hook *hook);
149 void xfs_dqtrx_hook_del(struct xfs_quotainfo *qi, struct xfs_dqtrx_hook *hook);
150 void xfs_dqtrx_hook_setup(struct xfs_dqtrx_hook *hook, notifier_fn_t mod_fn,
151 notifier_fn_t apply_fn);
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 */
159 xfs_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)
168 #define xfs_trans_dup_dqinfo(tp, tp2)
169 #define xfs_trans_free_dqinfo(tp)
170 static inline void xfs_trans_mod_dquot_byino(struct xfs_trans *tp,
171 struct xfs_inode *ip, uint field, int64_t delta)
174 #define xfs_trans_apply_dquot_deltas(tp)
175 #define xfs_trans_unreserve_and_mod_dquots(tp)
176 static inline int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp,
177 struct xfs_inode *ip, int64_t dblocks, int64_t rblocks,
182 static 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)
191 xfs_quota_reserve_blkres(struct xfs_inode *ip, int64_t blocks)
197 xfs_trans_reserve_quota_icreate(struct xfs_trans *tp, struct xfs_dquot *udqp,
198 struct xfs_dquot *gdqp, struct xfs_dquot *pdqp, int64_t dblocks)
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)
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 */
222 #endif /* CONFIG_XFS_QUOTA */
225 xfs_quota_unreserve_blkres(struct xfs_inode *ip, int64_t blocks)
227 return xfs_quota_reserve_blkres(ip, -blocks);
230 extern int xfs_mount_reset_sbqflags(struct xfs_mount *);
232 #endif /* __XFS_QUOTA_H__ */