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_IS_DQDETACHED(ip) \
33 ((ip)->i_udquot == NULL && \
34 (ip)->i_gdquot == NULL && \
35 (ip)->i_pdquot == NULL)
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))
51 return XFS_UQUOTA_CHKD;
52 case XFS_DQTYPE_GROUP:
53 return XFS_GQUOTA_CHKD;
55 return XFS_PQUOTA_CHKD;
62 * The structure kept inside the xfs_trans_t keep track of dquot changes
63 * within a transaction and apply them later.
66 struct xfs_dquot *qt_dquot; /* the dquot this refers to */
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 */
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 */
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 */
82 enum xfs_apply_dqtrx_type {
83 XFS_APPLY_DQTRX_COMMIT = 0,
84 XFS_APPLY_DQTRX_UNRESERVE,
88 * Parameters for applying dqtrx changes to a dquot. The hook function arg
89 * parameter is enum xfs_apply_dqtrx_type.
91 struct xfs_apply_dqtrx_params {
98 #ifdef CONFIG_XFS_QUOTA
99 extern void xfs_trans_dup_dqinfo(struct xfs_trans *, struct xfs_trans *);
100 extern void xfs_trans_free_dqinfo(struct xfs_trans *);
101 extern void xfs_trans_mod_dquot_byino(struct xfs_trans *, struct xfs_inode *,
103 extern void xfs_trans_apply_dquot_deltas(struct xfs_trans *);
104 void xfs_trans_unreserve_and_mod_dquots(struct xfs_trans *tp,
105 bool already_locked);
106 int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp, struct xfs_inode *ip,
107 int64_t dblocks, int64_t rblocks, bool force);
108 extern 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);
111 int 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);
115 extern 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 **);
118 extern void xfs_qm_vop_create_dqattach(struct xfs_trans *, struct xfs_inode *,
119 struct xfs_dquot *, struct xfs_dquot *, struct xfs_dquot *);
120 extern int xfs_qm_vop_rename_dqattach(struct xfs_inode **);
121 extern struct xfs_dquot *xfs_qm_vop_chown(struct xfs_trans *,
122 struct xfs_inode *, struct xfs_dquot **, struct xfs_dquot *);
123 extern int xfs_qm_dqattach(struct xfs_inode *);
124 extern int xfs_qm_dqattach_locked(struct xfs_inode *ip, bool doalloc);
125 extern void xfs_qm_dqdetach(struct xfs_inode *);
126 extern void xfs_qm_dqrele(struct xfs_dquot *);
127 extern void xfs_qm_statvfs(struct xfs_inode *, struct kstatfs *);
128 extern int xfs_qm_newmount(struct xfs_mount *, uint *, uint *);
129 void xfs_qm_resume_quotaon(struct xfs_mount *mp);
130 extern void xfs_qm_mount_quotas(struct xfs_mount *);
131 extern void xfs_qm_unmount(struct xfs_mount *);
132 extern void xfs_qm_unmount_quotas(struct xfs_mount *);
133 bool xfs_inode_near_dquot_enforcement(struct xfs_inode *ip, xfs_dqtype_t type);
134 int xfs_quota_reserve_blkres(struct xfs_inode *ip, int64_t blocks);
136 # ifdef CONFIG_XFS_LIVE_HOOKS
137 void xfs_trans_mod_ino_dquot(struct xfs_trans *tp, struct xfs_inode *ip,
138 struct xfs_dquot *dqp, unsigned int field, int64_t delta);
140 struct xfs_quotainfo;
142 struct xfs_dqtrx_hook {
143 struct xfs_hook mod_hook;
144 struct xfs_hook apply_hook;
147 void xfs_dqtrx_hook_disable(void);
148 void xfs_dqtrx_hook_enable(void);
150 int xfs_dqtrx_hook_add(struct xfs_quotainfo *qi, struct xfs_dqtrx_hook *hook);
151 void xfs_dqtrx_hook_del(struct xfs_quotainfo *qi, struct xfs_dqtrx_hook *hook);
152 void xfs_dqtrx_hook_setup(struct xfs_dqtrx_hook *hook, notifier_fn_t mod_fn,
153 notifier_fn_t apply_fn);
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 */
161 xfs_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)
170 #define xfs_trans_dup_dqinfo(tp, tp2)
171 #define xfs_trans_free_dqinfo(tp)
172 static inline void xfs_trans_mod_dquot_byino(struct xfs_trans *tp,
173 struct xfs_inode *ip, uint field, int64_t delta)
176 #define xfs_trans_apply_dquot_deltas(tp)
177 #define xfs_trans_unreserve_and_mod_dquots(tp, a)
178 static inline int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp,
179 struct xfs_inode *ip, int64_t dblocks, int64_t rblocks,
184 static 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)
193 xfs_trans_reserve_quota_icreate(struct xfs_trans *tp, struct xfs_dquot *udqp,
194 struct xfs_dquot *gdqp, struct xfs_dquot *pdqp, int64_t dblocks)
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)
214 static inline int xfs_quota_reserve_blkres(struct xfs_inode *ip, int64_t blocks)
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 */
224 #endif /* CONFIG_XFS_QUOTA */
227 xfs_quota_unreserve_blkres(struct xfs_inode *ip, uint64_t blocks)
229 /* don't return an error as unreserving quotas can't fail */
230 xfs_quota_reserve_blkres(ip, -(int64_t)blocks);
233 extern int xfs_mount_reset_sbqflags(struct xfs_mount *);
235 #endif /* __XFS_QUOTA_H__ */