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Dave Chinner76456fc2013-08-12 20:49:30 +10001/*
2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
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.
8 *
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.
13 *
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
17 */
18#ifndef __XFS_QUOTA_DEFS_H__
19#define __XFS_QUOTA_DEFS_H__
20
21/*
22 * Quota definitions shared between user and kernel source trees.
23 */
24
25/*
26 * Even though users may not have quota limits occupying all 64-bits,
27 * they may need 64-bit accounting. Hence, 64-bit quota-counters,
28 * and quota-limits. This is a waste in the common case, but hey ...
29 */
30typedef __uint64_t xfs_qcnt_t;
31typedef __uint16_t xfs_qwarncnt_t;
32
33/*
34 * flags for q_flags field in the dquot.
35 */
36#define XFS_DQ_USER 0x0001 /* a user quota */
37#define XFS_DQ_PROJ 0x0002 /* project quota */
38#define XFS_DQ_GROUP 0x0004 /* a group quota */
39#define XFS_DQ_DIRTY 0x0008 /* dquot is dirty */
40#define XFS_DQ_FREEING 0x0010 /* dquot is beeing torn down */
41
42#define XFS_DQ_ALLTYPES (XFS_DQ_USER|XFS_DQ_PROJ|XFS_DQ_GROUP)
43
44#define XFS_DQ_FLAGS \
45 { XFS_DQ_USER, "USER" }, \
46 { XFS_DQ_PROJ, "PROJ" }, \
47 { XFS_DQ_GROUP, "GROUP" }, \
48 { XFS_DQ_DIRTY, "DIRTY" }, \
49 { XFS_DQ_FREEING, "FREEING" }
50
51/*
52 * We have the possibility of all three quota types being active at once, and
53 * hence free space modification requires modification of all three current
54 * dquots in a single transaction. For this case we need to have a reservation
55 * of at least 3 dquots.
56 *
57 * However, a chmod operation can change both UID and GID in a single
58 * transaction, resulting in requiring {old, new} x {uid, gid} dquots to be
59 * modified. Hence for this case we need to reserve space for at least 4 dquots.
60 *
61 * And in the worst case, there's a rename operation that can be modifying up to
62 * 4 inodes with dquots attached to them. In reality, the only inodes that can
63 * have their dquots modified are the source and destination directory inodes
64 * due to directory name creation and removal. That can require space allocation
65 * and/or freeing on both directory inodes, and hence all three dquots on each
66 * inode can be modified. And if the directories are world writeable, all the
67 * dquots can be unique and so 6 dquots can be modified....
68 *
69 * And, of course, we also need to take into account the dquot log format item
70 * used to describe each dquot.
71 */
72#define XFS_DQUOT_LOGRES(mp) \
73 ((sizeof(struct xfs_dq_logformat) + sizeof(struct xfs_disk_dquot)) * 6)
74
75#define XFS_IS_QUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_ALL_QUOTA_ACCT)
76#define XFS_IS_UQUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_UQUOTA_ACCT)
77#define XFS_IS_PQUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_PQUOTA_ACCT)
78#define XFS_IS_GQUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_GQUOTA_ACCT)
79#define XFS_IS_UQUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_UQUOTA_ENFD)
80#define XFS_IS_GQUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_GQUOTA_ENFD)
81#define XFS_IS_PQUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_PQUOTA_ENFD)
82
83/*
84 * Incore only flags for quotaoff - these bits get cleared when quota(s)
85 * are in the process of getting turned off. These flags are in m_qflags but
86 * never in sb_qflags.
87 */
88#define XFS_UQUOTA_ACTIVE 0x1000 /* uquotas are being turned off */
89#define XFS_GQUOTA_ACTIVE 0x2000 /* gquotas are being turned off */
90#define XFS_PQUOTA_ACTIVE 0x4000 /* pquotas are being turned off */
91#define XFS_ALL_QUOTA_ACTIVE \
92 (XFS_UQUOTA_ACTIVE | XFS_GQUOTA_ACTIVE | XFS_PQUOTA_ACTIVE)
93
94/*
95 * Checking XFS_IS_*QUOTA_ON() while holding any inode lock guarantees
96 * quota will be not be switched off as long as that inode lock is held.
97 */
98#define XFS_IS_QUOTA_ON(mp) ((mp)->m_qflags & (XFS_UQUOTA_ACTIVE | \
99 XFS_GQUOTA_ACTIVE | \
100 XFS_PQUOTA_ACTIVE))
101#define XFS_IS_OQUOTA_ON(mp) ((mp)->m_qflags & (XFS_GQUOTA_ACTIVE | \
102 XFS_PQUOTA_ACTIVE))
103#define XFS_IS_UQUOTA_ON(mp) ((mp)->m_qflags & XFS_UQUOTA_ACTIVE)
104#define XFS_IS_GQUOTA_ON(mp) ((mp)->m_qflags & XFS_GQUOTA_ACTIVE)
105#define XFS_IS_PQUOTA_ON(mp) ((mp)->m_qflags & XFS_PQUOTA_ACTIVE)
106
107/*
108 * Flags to tell various functions what to do. Not all of these are meaningful
109 * to a single function. None of these XFS_QMOPT_* flags are meant to have
110 * persistent values (ie. their values can and will change between versions)
111 */
112#define XFS_QMOPT_DQALLOC 0x0000002 /* alloc dquot ondisk if needed */
113#define XFS_QMOPT_UQUOTA 0x0000004 /* user dquot requested */
114#define XFS_QMOPT_PQUOTA 0x0000008 /* project dquot requested */
115#define XFS_QMOPT_FORCE_RES 0x0000010 /* ignore quota limits */
116#define XFS_QMOPT_SBVERSION 0x0000040 /* change superblock version num */
117#define XFS_QMOPT_DOWARN 0x0000400 /* increase warning cnt if needed */
118#define XFS_QMOPT_DQREPAIR 0x0001000 /* repair dquot if damaged */
119#define XFS_QMOPT_GQUOTA 0x0002000 /* group dquot requested */
120#define XFS_QMOPT_ENOSPC 0x0004000 /* enospc instead of edquot (prj) */
121
122/*
123 * flags to xfs_trans_mod_dquot to indicate which field needs to be
124 * modified.
125 */
126#define XFS_QMOPT_RES_REGBLKS 0x0010000
127#define XFS_QMOPT_RES_RTBLKS 0x0020000
128#define XFS_QMOPT_BCOUNT 0x0040000
129#define XFS_QMOPT_ICOUNT 0x0080000
130#define XFS_QMOPT_RTBCOUNT 0x0100000
131#define XFS_QMOPT_DELBCOUNT 0x0200000
132#define XFS_QMOPT_DELRTBCOUNT 0x0400000
133#define XFS_QMOPT_RES_INOS 0x0800000
134
135/*
136 * flags for dqalloc.
137 */
138#define XFS_QMOPT_INHERIT 0x1000000
139
140/*
141 * flags to xfs_trans_mod_dquot.
142 */
143#define XFS_TRANS_DQ_RES_BLKS XFS_QMOPT_RES_REGBLKS
144#define XFS_TRANS_DQ_RES_RTBLKS XFS_QMOPT_RES_RTBLKS
145#define XFS_TRANS_DQ_RES_INOS XFS_QMOPT_RES_INOS
146#define XFS_TRANS_DQ_BCOUNT XFS_QMOPT_BCOUNT
147#define XFS_TRANS_DQ_DELBCOUNT XFS_QMOPT_DELBCOUNT
148#define XFS_TRANS_DQ_ICOUNT XFS_QMOPT_ICOUNT
149#define XFS_TRANS_DQ_RTBCOUNT XFS_QMOPT_RTBCOUNT
150#define XFS_TRANS_DQ_DELRTBCOUNT XFS_QMOPT_DELRTBCOUNT
151
152
153#define XFS_QMOPT_QUOTALL \
154 (XFS_QMOPT_UQUOTA | XFS_QMOPT_PQUOTA | XFS_QMOPT_GQUOTA)
155#define XFS_QMOPT_RESBLK_MASK (XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_RES_RTBLKS)
156
Dave Chinner9aede1d2013-10-15 09:17:52 +1100157extern int xfs_dqcheck(struct xfs_mount *mp, xfs_disk_dquot_t *ddq,
158 xfs_dqid_t id, uint type, uint flags, char *str);
159extern int xfs_calc_dquots_per_chunk(struct xfs_mount *mp, unsigned int nbblks);
160
Dave Chinner76456fc2013-08-12 20:49:30 +1000161#endif /* __XFS_QUOTA_H__ */