1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
6 #ifndef __XFS_QUOTA_DEFS_H__
7 #define __XFS_QUOTA_DEFS_H__
10 * Quota definitions shared between user and kernel source trees.
14 * Even though users may not have quota limits occupying all 64-bits,
15 * they may need 64-bit accounting. Hence, 64-bit quota-counters,
16 * and quota-limits. This is a waste in the common case, but hey ...
18 typedef uint64_t xfs_qcnt_t;
19 typedef uint16_t xfs_qwarncnt_t;
21 typedef uint8_t xfs_dqtype_t;
23 #define XFS_DQTYPE_STRINGS \
24 { XFS_DQTYPE_USER, "USER" }, \
25 { XFS_DQTYPE_PROJ, "PROJ" }, \
26 { XFS_DQTYPE_GROUP, "GROUP" }, \
27 { XFS_DQTYPE_BIGTIME, "BIGTIME" }
30 * flags for q_flags field in the dquot.
32 #define XFS_DQFLAG_DIRTY (1 << 0) /* dquot is dirty */
33 #define XFS_DQFLAG_FREEING (1 << 1) /* dquot is being torn down */
35 #define XFS_DQFLAG_STRINGS \
36 { XFS_DQFLAG_DIRTY, "DIRTY" }, \
37 { XFS_DQFLAG_FREEING, "FREEING" }
40 * We have the possibility of all three quota types being active at once, and
41 * hence free space modification requires modification of all three current
42 * dquots in a single transaction. For this case we need to have a reservation
43 * of at least 3 dquots.
45 * However, a chmod operation can change both UID and GID in a single
46 * transaction, resulting in requiring {old, new} x {uid, gid} dquots to be
47 * modified. Hence for this case we need to reserve space for at least 4 dquots.
49 * And in the worst case, there's a rename operation that can be modifying up to
50 * 4 inodes with dquots attached to them. In reality, the only inodes that can
51 * have their dquots modified are the source and destination directory inodes
52 * due to directory name creation and removal. That can require space allocation
53 * and/or freeing on both directory inodes, and hence all three dquots on each
54 * inode can be modified. And if the directories are world writeable, all the
55 * dquots can be unique and so 6 dquots can be modified....
57 * And, of course, we also need to take into account the dquot log format item
58 * used to describe each dquot.
60 #define XFS_DQUOT_LOGRES(mp) \
61 ((sizeof(struct xfs_dq_logformat) + sizeof(struct xfs_disk_dquot)) * 6)
63 #define XFS_IS_QUOTA_ON(mp) ((mp)->m_qflags & XFS_ALL_QUOTA_ACCT)
64 #define XFS_IS_UQUOTA_ON(mp) ((mp)->m_qflags & XFS_UQUOTA_ACCT)
65 #define XFS_IS_PQUOTA_ON(mp) ((mp)->m_qflags & XFS_PQUOTA_ACCT)
66 #define XFS_IS_GQUOTA_ON(mp) ((mp)->m_qflags & XFS_GQUOTA_ACCT)
67 #define XFS_IS_UQUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_UQUOTA_ENFD)
68 #define XFS_IS_GQUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_GQUOTA_ENFD)
69 #define XFS_IS_PQUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_PQUOTA_ENFD)
72 * Flags to tell various functions what to do. Not all of these are meaningful
73 * to a single function. None of these XFS_QMOPT_* flags are meant to have
74 * persistent values (ie. their values can and will change between versions)
76 #define XFS_QMOPT_UQUOTA 0x0000004 /* user dquot requested */
77 #define XFS_QMOPT_PQUOTA 0x0000008 /* project dquot requested */
78 #define XFS_QMOPT_FORCE_RES 0x0000010 /* ignore quota limits */
79 #define XFS_QMOPT_SBVERSION 0x0000040 /* change superblock version num */
80 #define XFS_QMOPT_GQUOTA 0x0002000 /* group dquot requested */
83 * flags to xfs_trans_mod_dquot to indicate which field needs to be
86 #define XFS_QMOPT_RES_REGBLKS 0x0010000
87 #define XFS_QMOPT_RES_RTBLKS 0x0020000
88 #define XFS_QMOPT_BCOUNT 0x0040000
89 #define XFS_QMOPT_ICOUNT 0x0080000
90 #define XFS_QMOPT_RTBCOUNT 0x0100000
91 #define XFS_QMOPT_DELBCOUNT 0x0200000
92 #define XFS_QMOPT_DELRTBCOUNT 0x0400000
93 #define XFS_QMOPT_RES_INOS 0x0800000
98 #define XFS_QMOPT_INHERIT 0x1000000
101 * flags to xfs_trans_mod_dquot.
103 #define XFS_TRANS_DQ_RES_BLKS XFS_QMOPT_RES_REGBLKS
104 #define XFS_TRANS_DQ_RES_RTBLKS XFS_QMOPT_RES_RTBLKS
105 #define XFS_TRANS_DQ_RES_INOS XFS_QMOPT_RES_INOS
106 #define XFS_TRANS_DQ_BCOUNT XFS_QMOPT_BCOUNT
107 #define XFS_TRANS_DQ_DELBCOUNT XFS_QMOPT_DELBCOUNT
108 #define XFS_TRANS_DQ_ICOUNT XFS_QMOPT_ICOUNT
109 #define XFS_TRANS_DQ_RTBCOUNT XFS_QMOPT_RTBCOUNT
110 #define XFS_TRANS_DQ_DELRTBCOUNT XFS_QMOPT_DELRTBCOUNT
113 #define XFS_QMOPT_QUOTALL \
114 (XFS_QMOPT_UQUOTA | XFS_QMOPT_PQUOTA | XFS_QMOPT_GQUOTA)
115 #define XFS_QMOPT_RESBLK_MASK (XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_RES_RTBLKS)
117 extern xfs_failaddr_t xfs_dquot_verify(struct xfs_mount *mp,
118 struct xfs_disk_dquot *ddq, xfs_dqid_t id);
119 extern xfs_failaddr_t xfs_dqblk_verify(struct xfs_mount *mp,
120 struct xfs_dqblk *dqb, xfs_dqid_t id);
121 extern int xfs_calc_dquots_per_chunk(unsigned int nbblks);
122 extern void xfs_dqblk_repair(struct xfs_mount *mp, struct xfs_dqblk *dqb,
123 xfs_dqid_t id, xfs_dqtype_t type);
126 time64_t xfs_dquot_from_disk_ts(struct xfs_disk_dquot *ddq,
128 __be32 xfs_dquot_to_disk_ts(struct xfs_dquot *ddq, time64_t timer);
130 #endif /* __XFS_QUOTA_H__ */