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1 | /* |
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 | */ | |
30 | typedef __uint64_t xfs_qcnt_t; | |
31 | typedef __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 */ | |
296c24e2 | 40 | #define XFS_DQ_FREEING 0x0010 /* dquot is being torn down */ |
76456fc2 DC |
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)) | |
76456fc2 DC |
101 | #define XFS_IS_UQUOTA_ON(mp) ((mp)->m_qflags & XFS_UQUOTA_ACTIVE) |
102 | #define XFS_IS_GQUOTA_ON(mp) ((mp)->m_qflags & XFS_GQUOTA_ACTIVE) | |
103 | #define XFS_IS_PQUOTA_ON(mp) ((mp)->m_qflags & XFS_PQUOTA_ACTIVE) | |
104 | ||
105 | /* | |
106 | * Flags to tell various functions what to do. Not all of these are meaningful | |
107 | * to a single function. None of these XFS_QMOPT_* flags are meant to have | |
108 | * persistent values (ie. their values can and will change between versions) | |
109 | */ | |
110 | #define XFS_QMOPT_DQALLOC 0x0000002 /* alloc dquot ondisk if needed */ | |
111 | #define XFS_QMOPT_UQUOTA 0x0000004 /* user dquot requested */ | |
112 | #define XFS_QMOPT_PQUOTA 0x0000008 /* project dquot requested */ | |
113 | #define XFS_QMOPT_FORCE_RES 0x0000010 /* ignore quota limits */ | |
114 | #define XFS_QMOPT_SBVERSION 0x0000040 /* change superblock version num */ | |
115 | #define XFS_QMOPT_DOWARN 0x0000400 /* increase warning cnt if needed */ | |
116 | #define XFS_QMOPT_DQREPAIR 0x0001000 /* repair dquot if damaged */ | |
117 | #define XFS_QMOPT_GQUOTA 0x0002000 /* group dquot requested */ | |
118 | #define XFS_QMOPT_ENOSPC 0x0004000 /* enospc instead of edquot (prj) */ | |
296c24e2 | 119 | #define XFS_QMOPT_DQNEXT 0x0008000 /* return next dquot >= this ID */ |
76456fc2 DC |
120 | |
121 | /* | |
122 | * flags to xfs_trans_mod_dquot to indicate which field needs to be | |
123 | * modified. | |
124 | */ | |
125 | #define XFS_QMOPT_RES_REGBLKS 0x0010000 | |
126 | #define XFS_QMOPT_RES_RTBLKS 0x0020000 | |
127 | #define XFS_QMOPT_BCOUNT 0x0040000 | |
128 | #define XFS_QMOPT_ICOUNT 0x0080000 | |
129 | #define XFS_QMOPT_RTBCOUNT 0x0100000 | |
130 | #define XFS_QMOPT_DELBCOUNT 0x0200000 | |
131 | #define XFS_QMOPT_DELRTBCOUNT 0x0400000 | |
132 | #define XFS_QMOPT_RES_INOS 0x0800000 | |
133 | ||
134 | /* | |
135 | * flags for dqalloc. | |
136 | */ | |
137 | #define XFS_QMOPT_INHERIT 0x1000000 | |
138 | ||
139 | /* | |
140 | * flags to xfs_trans_mod_dquot. | |
141 | */ | |
142 | #define XFS_TRANS_DQ_RES_BLKS XFS_QMOPT_RES_REGBLKS | |
143 | #define XFS_TRANS_DQ_RES_RTBLKS XFS_QMOPT_RES_RTBLKS | |
144 | #define XFS_TRANS_DQ_RES_INOS XFS_QMOPT_RES_INOS | |
145 | #define XFS_TRANS_DQ_BCOUNT XFS_QMOPT_BCOUNT | |
146 | #define XFS_TRANS_DQ_DELBCOUNT XFS_QMOPT_DELBCOUNT | |
147 | #define XFS_TRANS_DQ_ICOUNT XFS_QMOPT_ICOUNT | |
148 | #define XFS_TRANS_DQ_RTBCOUNT XFS_QMOPT_RTBCOUNT | |
149 | #define XFS_TRANS_DQ_DELRTBCOUNT XFS_QMOPT_DELRTBCOUNT | |
150 | ||
151 | ||
152 | #define XFS_QMOPT_QUOTALL \ | |
153 | (XFS_QMOPT_UQUOTA | XFS_QMOPT_PQUOTA | XFS_QMOPT_GQUOTA) | |
154 | #define XFS_QMOPT_RESBLK_MASK (XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_RES_RTBLKS) | |
155 | ||
9aede1d8 | 156 | extern int xfs_dqcheck(struct xfs_mount *mp, xfs_disk_dquot_t *ddq, |
7d6a13f0 | 157 | xfs_dqid_t id, uint type, uint flags, const char *str); |
6ea94bb5 | 158 | extern int xfs_calc_dquots_per_chunk(unsigned int nbblks); |
9aede1d8 | 159 | |
76456fc2 | 160 | #endif /* __XFS_QUOTA_H__ */ |