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))
51 #define XFS_MOUNT_QUOTA_ALL (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\
52 XFS_UQUOTA_CHKD|XFS_GQUOTA_ACCT|\
53 XFS_GQUOTA_ENFD|XFS_GQUOTA_CHKD|\
54 XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD|\
59 * The structure kept inside the xfs_trans_t keep track of dquot changes
60 * within a transaction and apply them later.
62 typedef struct xfs_dqtrx {
63 struct xfs_dquot *qt_dquot; /* the dquot this refers to */
64 ulong qt_blk_res; /* blks reserved on a dquot */
65 ulong qt_blk_res_used; /* blks used from the reservation */
66 ulong qt_ino_res; /* inode reserved on a dquot */
67 ulong qt_ino_res_used; /* inodes used from the reservation */
68 long qt_bcount_delta; /* dquot blk count changes */
69 long qt_delbcnt_delta; /* delayed dquot blk count changes */
70 long qt_icount_delta; /* dquot inode count changes */
71 ulong qt_rtblk_res; /* # blks reserved on a dquot */
72 ulong qt_rtblk_res_used;/* # blks used from reservation */
73 long qt_rtbcount_delta;/* dquot realtime blk changes */
74 long qt_delrtb_delta; /* delayed RT blk count changes */
77 #ifdef CONFIG_XFS_QUOTA
78 extern void xfs_trans_dup_dqinfo(struct xfs_trans *, struct xfs_trans *);
79 extern void xfs_trans_free_dqinfo(struct xfs_trans *);
80 extern void xfs_trans_mod_dquot_byino(struct xfs_trans *, struct xfs_inode *,
82 extern void xfs_trans_apply_dquot_deltas(struct xfs_trans *);
83 extern void xfs_trans_unreserve_and_mod_dquots(struct xfs_trans *);
84 extern int xfs_trans_reserve_quota_nblks(struct xfs_trans *,
85 struct xfs_inode *, long, long, uint);
86 extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *,
87 struct xfs_mount *, struct xfs_dquot *,
88 struct xfs_dquot *, struct xfs_dquot *, long, long, uint);
90 extern int xfs_qm_vop_dqalloc(struct xfs_inode *, xfs_dqid_t, xfs_dqid_t,
91 prid_t, uint, struct xfs_dquot **, struct xfs_dquot **,
93 extern void xfs_qm_vop_create_dqattach(struct xfs_trans *, struct xfs_inode *,
94 struct xfs_dquot *, struct xfs_dquot *, struct xfs_dquot *);
95 extern int xfs_qm_vop_rename_dqattach(struct xfs_inode **);
96 extern struct xfs_dquot *xfs_qm_vop_chown(struct xfs_trans *,
97 struct xfs_inode *, struct xfs_dquot **, struct xfs_dquot *);
98 extern int xfs_qm_vop_chown_reserve(struct xfs_trans *, struct xfs_inode *,
99 struct xfs_dquot *, struct xfs_dquot *,
100 struct xfs_dquot *, uint);
101 extern int xfs_qm_dqattach(struct xfs_inode *, uint);
102 extern int xfs_qm_dqattach_locked(struct xfs_inode *, uint);
103 extern void xfs_qm_dqdetach(struct xfs_inode *);
104 extern void xfs_qm_dqrele(struct xfs_dquot *);
105 extern void xfs_qm_statvfs(struct xfs_inode *, struct kstatfs *);
106 extern int xfs_qm_newmount(struct xfs_mount *, uint *, uint *);
107 extern void xfs_qm_mount_quotas(struct xfs_mount *);
108 extern void xfs_qm_unmount(struct xfs_mount *);
109 extern void xfs_qm_unmount_quotas(struct xfs_mount *);
113 xfs_qm_vop_dqalloc(struct xfs_inode *ip, xfs_dqid_t uid, xfs_dqid_t gid,
114 prid_t prid, uint flags, struct xfs_dquot **udqp,
115 struct xfs_dquot **gdqp, struct xfs_dquot **pdqp)
122 #define xfs_trans_dup_dqinfo(tp, tp2)
123 #define xfs_trans_free_dqinfo(tp)
124 #define xfs_trans_mod_dquot_byino(tp, ip, fields, delta)
125 #define xfs_trans_apply_dquot_deltas(tp)
126 #define xfs_trans_unreserve_and_mod_dquots(tp)
127 static inline int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp,
128 struct xfs_inode *ip, long nblks, long ninos, uint flags)
132 static inline int xfs_trans_reserve_quota_bydquots(struct xfs_trans *tp,
133 struct xfs_mount *mp, struct xfs_dquot *udqp,
134 struct xfs_dquot *gdqp, struct xfs_dquot *pdqp,
135 long nblks, long nions, uint flags)
139 #define xfs_qm_vop_create_dqattach(tp, ip, u, g, p)
140 #define xfs_qm_vop_rename_dqattach(it) (0)
141 #define xfs_qm_vop_chown(tp, ip, old, new) (NULL)
142 #define xfs_qm_vop_chown_reserve(tp, ip, u, g, p, fl) (0)
143 #define xfs_qm_dqattach(ip, fl) (0)
144 #define xfs_qm_dqattach_locked(ip, fl) (0)
145 #define xfs_qm_dqdetach(ip)
146 #define xfs_qm_dqrele(d)
147 #define xfs_qm_statvfs(ip, s)
148 #define xfs_qm_newmount(mp, a, b) (0)
149 #define xfs_qm_mount_quotas(mp)
150 #define xfs_qm_unmount(mp)
151 #define xfs_qm_unmount_quotas(mp)
152 #endif /* CONFIG_XFS_QUOTA */
154 #define xfs_trans_unreserve_quota_nblks(tp, ip, nblks, ninos, flags) \
155 xfs_trans_reserve_quota_nblks(tp, ip, -(nblks), -(ninos), flags)
156 #define xfs_trans_reserve_quota(tp, mp, ud, gd, pd, nb, ni, f) \
157 xfs_trans_reserve_quota_bydquots(tp, mp, ud, gd, pd, nb, ni, \
158 f | XFS_QMOPT_RES_REGBLKS)
160 extern int xfs_qm_dqcheck(struct xfs_mount *, xfs_disk_dquot_t *,
161 xfs_dqid_t, uint, uint, char *);
162 extern int xfs_mount_reset_sbqflags(struct xfs_mount *);
164 extern const struct xfs_buf_ops xfs_dquot_buf_ops;
166 #endif /* __XFS_QUOTA_H__ */