2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 #ifndef __XFS_QUOTA_H__
19 #define __XFS_QUOTA_H__
21 #include "xfs_quota_defs.h"
24 * Kernel only quota definitions and functions
30 * This check is done typically without holding the inode lock;
31 * that may seem racy, but it is harmless in the context that it is used.
32 * The inode cannot go inactive as long a reference is kept, and
33 * therefore if dquot(s) were attached, they'll stay consistent.
34 * If, for example, the ownership of the inode changes while
35 * we didn't have the inode locked, the appropriate dquot(s) will be
36 * attached atomically.
38 #define XFS_NOT_DQATTACHED(mp, ip) \
39 ((XFS_IS_UQUOTA_ON(mp) && (ip)->i_udquot == NULL) || \
40 (XFS_IS_GQUOTA_ON(mp) && (ip)->i_gdquot == NULL) || \
41 (XFS_IS_PQUOTA_ON(mp) && (ip)->i_pdquot == NULL))
43 #define XFS_QM_NEED_QUOTACHECK(mp) \
44 ((XFS_IS_UQUOTA_ON(mp) && \
45 (mp->m_sb.sb_qflags & XFS_UQUOTA_CHKD) == 0) || \
46 (XFS_IS_GQUOTA_ON(mp) && \
47 (mp->m_sb.sb_qflags & XFS_GQUOTA_CHKD) == 0) || \
48 (XFS_IS_PQUOTA_ON(mp) && \
49 (mp->m_sb.sb_qflags & XFS_PQUOTA_CHKD) == 0))
57 return XFS_UQUOTA_CHKD;
59 return XFS_GQUOTA_CHKD;
61 return XFS_PQUOTA_CHKD;
68 * The structure kept inside the xfs_trans_t keep track of dquot changes
69 * within a transaction and apply them later.
71 typedef struct xfs_dqtrx {
72 struct xfs_dquot *qt_dquot; /* the dquot this refers to */
73 ulong qt_blk_res; /* blks reserved on a dquot */
74 ulong qt_ino_res; /* inode reserved on a dquot */
75 ulong qt_ino_res_used; /* inodes used from the reservation */
76 long qt_bcount_delta; /* dquot blk count changes */
77 long qt_delbcnt_delta; /* delayed dquot blk count changes */
78 long qt_icount_delta; /* dquot inode count changes */
79 ulong qt_rtblk_res; /* # blks reserved on a dquot */
80 ulong qt_rtblk_res_used;/* # blks used from reservation */
81 long qt_rtbcount_delta;/* dquot realtime blk changes */
82 long qt_delrtb_delta; /* delayed RT blk count changes */
85 #ifdef CONFIG_XFS_QUOTA
86 extern void xfs_trans_dup_dqinfo(struct xfs_trans *, struct xfs_trans *);
87 extern void xfs_trans_free_dqinfo(struct xfs_trans *);
88 extern void xfs_trans_mod_dquot_byino(struct xfs_trans *, struct xfs_inode *,
90 extern void xfs_trans_apply_dquot_deltas(struct xfs_trans *);
91 extern void xfs_trans_unreserve_and_mod_dquots(struct xfs_trans *);
92 extern int xfs_trans_reserve_quota_nblks(struct xfs_trans *,
93 struct xfs_inode *, long, long, uint);
94 extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *,
95 struct xfs_mount *, struct xfs_dquot *,
96 struct xfs_dquot *, struct xfs_dquot *, long, long, uint);
98 extern int xfs_qm_vop_dqalloc(struct xfs_inode *, xfs_dqid_t, xfs_dqid_t,
99 prid_t, uint, struct xfs_dquot **, struct xfs_dquot **,
100 struct xfs_dquot **);
101 extern void xfs_qm_vop_create_dqattach(struct xfs_trans *, struct xfs_inode *,
102 struct xfs_dquot *, struct xfs_dquot *, struct xfs_dquot *);
103 extern int xfs_qm_vop_rename_dqattach(struct xfs_inode **);
104 extern struct xfs_dquot *xfs_qm_vop_chown(struct xfs_trans *,
105 struct xfs_inode *, struct xfs_dquot **, struct xfs_dquot *);
106 extern int xfs_qm_vop_chown_reserve(struct xfs_trans *, struct xfs_inode *,
107 struct xfs_dquot *, struct xfs_dquot *,
108 struct xfs_dquot *, uint);
109 extern int xfs_qm_dqattach(struct xfs_inode *);
110 extern int xfs_qm_dqattach_locked(struct xfs_inode *ip, bool doalloc);
111 extern void xfs_qm_dqdetach(struct xfs_inode *);
112 extern void xfs_qm_dqrele(struct xfs_dquot *);
113 extern void xfs_qm_statvfs(struct xfs_inode *, struct kstatfs *);
114 extern int xfs_qm_newmount(struct xfs_mount *, uint *, uint *);
115 extern void xfs_qm_mount_quotas(struct xfs_mount *);
116 extern void xfs_qm_unmount(struct xfs_mount *);
117 extern void xfs_qm_unmount_quotas(struct xfs_mount *);
121 xfs_qm_vop_dqalloc(struct xfs_inode *ip, xfs_dqid_t uid, xfs_dqid_t gid,
122 prid_t prid, uint flags, struct xfs_dquot **udqp,
123 struct xfs_dquot **gdqp, struct xfs_dquot **pdqp)
130 #define xfs_trans_dup_dqinfo(tp, tp2)
131 #define xfs_trans_free_dqinfo(tp)
132 #define xfs_trans_mod_dquot_byino(tp, ip, fields, delta)
133 #define xfs_trans_apply_dquot_deltas(tp)
134 #define xfs_trans_unreserve_and_mod_dquots(tp)
135 static inline int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp,
136 struct xfs_inode *ip, long nblks, long ninos, uint flags)
140 static inline int xfs_trans_reserve_quota_bydquots(struct xfs_trans *tp,
141 struct xfs_mount *mp, struct xfs_dquot *udqp,
142 struct xfs_dquot *gdqp, struct xfs_dquot *pdqp,
143 long nblks, long nions, uint flags)
147 #define xfs_qm_vop_create_dqattach(tp, ip, u, g, p)
148 #define xfs_qm_vop_rename_dqattach(it) (0)
149 #define xfs_qm_vop_chown(tp, ip, old, new) (NULL)
150 #define xfs_qm_vop_chown_reserve(tp, ip, u, g, p, fl) (0)
151 #define xfs_qm_dqattach(ip) (0)
152 #define xfs_qm_dqattach_locked(ip, fl) (0)
153 #define xfs_qm_dqdetach(ip)
154 #define xfs_qm_dqrele(d)
155 #define xfs_qm_statvfs(ip, s)
156 #define xfs_qm_newmount(mp, a, b) (0)
157 #define xfs_qm_mount_quotas(mp)
158 #define xfs_qm_unmount(mp)
159 #define xfs_qm_unmount_quotas(mp)
160 #endif /* CONFIG_XFS_QUOTA */
162 #define xfs_trans_unreserve_quota_nblks(tp, ip, nblks, ninos, flags) \
163 xfs_trans_reserve_quota_nblks(tp, ip, -(nblks), -(ninos), flags)
164 #define xfs_trans_reserve_quota(tp, mp, ud, gd, pd, nb, ni, f) \
165 xfs_trans_reserve_quota_bydquots(tp, mp, ud, gd, pd, nb, ni, \
166 f | XFS_QMOPT_RES_REGBLKS)
168 extern int xfs_mount_reset_sbqflags(struct xfs_mount *);
170 #endif /* __XFS_QUOTA_H__ */