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1 : /*
2 : * Copyright (c) 1995-2001,2004 Silicon Graphics, Inc. All Rights Reserved.
3 : *
4 : * This program is free software; you can redistribute it and/or
5 : * modify it under the terms of the GNU Lesser General Public License
6 : * as published by the Free Software Foundation.
7 : *
8 : * This program is distributed in the hope that it will be useful,
9 : * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 : * GNU Lesser General Public License for more details.
12 : *
13 : * You should have received a copy of the GNU Lesset General Public License
14 : * along with this program; if not, write to the Free Software Foundation,
15 : * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
16 : */
17 : #ifndef _LINUX_DQBLK_XFS_H
18 : #define _LINUX_DQBLK_XFS_H
19 :
20 : #include <linux/types.h>
21 :
22 : /*
23 : * Disk quota - quotactl(2) commands for the XFS Quota Manager (XQM).
24 : */
25 :
26 : #define XQM_CMD(x) (('X'<<8)+(x)) /* note: forms first QCMD argument */
27 : #define XQM_COMMAND(x) (((x) & (0xff<<8)) == ('X'<<8)) /* test if for XFS */
28 :
29 : #define XQM_USRQUOTA 0 /* system call user quota type */
30 : #define XQM_GRPQUOTA 1 /* system call group quota type */
31 : #define XQM_PRJQUOTA 2 /* system call project quota type */
32 : #define XQM_MAXQUOTAS 3
33 :
34 : #define Q_XQUOTAON XQM_CMD(1) /* enable accounting/enforcement */
35 : #define Q_XQUOTAOFF XQM_CMD(2) /* disable accounting/enforcement */
36 : #define Q_XGETQUOTA XQM_CMD(3) /* get disk limits and usage */
37 : #define Q_XSETQLIM XQM_CMD(4) /* set disk limits */
38 : #define Q_XGETQSTAT XQM_CMD(5) /* get quota subsystem status */
39 : #define Q_XQUOTARM XQM_CMD(6) /* free disk space used by dquots */
40 : #define Q_XQUOTASYNC XQM_CMD(7) /* delalloc flush, updates dquots */
41 :
42 : /*
43 : * fs_disk_quota structure:
44 : *
45 : * This contains the current quota information regarding a user/proj/group.
46 : * It is 64-bit aligned, and all the blk units are in BBs (Basic Blocks) of
47 : * 512 bytes.
48 : */
49 : #define FS_DQUOT_VERSION 1 /* fs_disk_quota.d_version */
50 : typedef struct fs_disk_quota {
51 : __s8 d_version; /* version of this structure */
52 : __s8 d_flags; /* XFS_{USER,PROJ,GROUP}_QUOTA */
53 : __u16 d_fieldmask; /* field specifier */
54 : __u32 d_id; /* user, project, or group ID */
55 : __u64 d_blk_hardlimit;/* absolute limit on disk blks */
56 : __u64 d_blk_softlimit;/* preferred limit on disk blks */
57 : __u64 d_ino_hardlimit;/* maximum # allocated inodes */
58 : __u64 d_ino_softlimit;/* preferred inode limit */
59 : __u64 d_bcount; /* # disk blocks owned by the user */
60 : __u64 d_icount; /* # inodes owned by the user */
61 : __s32 d_itimer; /* zero if within inode limits */
62 : /* if not, we refuse service */
63 : __s32 d_btimer; /* similar to above; for disk blocks */
64 : __u16 d_iwarns; /* # warnings issued wrt num inodes */
65 : __u16 d_bwarns; /* # warnings issued wrt disk blocks */
66 : __s32 d_padding2; /* padding2 - for future use */
67 : __u64 d_rtb_hardlimit;/* absolute limit on realtime blks */
68 : __u64 d_rtb_softlimit;/* preferred limit on RT disk blks */
69 : __u64 d_rtbcount; /* # realtime blocks owned */
70 : __s32 d_rtbtimer; /* similar to above; for RT disk blks */
71 : __u16 d_rtbwarns; /* # warnings issued wrt RT disk blks */
72 : __s16 d_padding3; /* padding3 - for future use */
73 : char d_padding4[8]; /* yet more padding */
74 : } fs_disk_quota_t;
75 1 :
76 : /*
77 : * These fields are sent to Q_XSETQLIM to specify fields that need to change.
78 : */
79 : #define FS_DQ_ISOFT (1<<0)
80 : #define FS_DQ_IHARD (1<<1)
81 : #define FS_DQ_BSOFT (1<<2)
82 : #define FS_DQ_BHARD (1<<3)
83 : #define FS_DQ_RTBSOFT (1<<4)
84 : #define FS_DQ_RTBHARD (1<<5)
85 : #define FS_DQ_LIMIT_MASK (FS_DQ_ISOFT | FS_DQ_IHARD | FS_DQ_BSOFT | \
86 : FS_DQ_BHARD | FS_DQ_RTBSOFT | FS_DQ_RTBHARD)
87 : /*
88 : * These timers can only be set in super user's dquot. For others, timers are
89 : * automatically started and stopped. Superusers timer values set the limits
90 : * for the rest. In case these values are zero, the DQ_{F,B}TIMELIMIT values
91 : * defined below are used.
92 : * These values also apply only to the d_fieldmask field for Q_XSETQLIM.
93 : */
94 : #define FS_DQ_BTIMER (1<<6)
95 : #define FS_DQ_ITIMER (1<<7)
96 : #define FS_DQ_RTBTIMER (1<<8)
97 : #define FS_DQ_TIMER_MASK (FS_DQ_BTIMER | FS_DQ_ITIMER | FS_DQ_RTBTIMER)
98 :
99 : /*
100 : * Warning counts are set in both super user's dquot and others. For others,
101 : * warnings are set/cleared by the administrators (or automatically by going
102 : * below the soft limit). Superusers warning values set the warning limits
103 : * for the rest. In case these values are zero, the DQ_{F,B}WARNLIMIT values
104 : * defined below are used.
105 : * These values also apply only to the d_fieldmask field for Q_XSETQLIM.
106 : */
107 : #define FS_DQ_BWARNS (1<<9)
108 : #define FS_DQ_IWARNS (1<<10)
109 : #define FS_DQ_RTBWARNS (1<<11)
110 : #define FS_DQ_WARNS_MASK (FS_DQ_BWARNS | FS_DQ_IWARNS | FS_DQ_RTBWARNS)
111 :
112 : /*
113 : * Various flags related to quotactl(2). Only relevant to XFS filesystems.
114 : */
115 : #define XFS_QUOTA_UDQ_ACCT (1<<0) /* user quota accounting */
116 : #define XFS_QUOTA_UDQ_ENFD (1<<1) /* user quota limits enforcement */
117 : #define XFS_QUOTA_GDQ_ACCT (1<<2) /* group quota accounting */
118 : #define XFS_QUOTA_GDQ_ENFD (1<<3) /* group quota limits enforcement */
119 : #define XFS_QUOTA_PDQ_ACCT (1<<4) /* project quota accounting */
120 : #define XFS_QUOTA_PDQ_ENFD (1<<5) /* project quota limits enforcement */
121 :
122 : #define XFS_USER_QUOTA (1<<0) /* user quota type */
123 : #define XFS_PROJ_QUOTA (1<<1) /* project quota type */
124 : #define XFS_GROUP_QUOTA (1<<2) /* group quota type */
125 :
126 : /*
127 : * fs_quota_stat is the struct returned in Q_XGETQSTAT for a given file system.
128 : * Provides a centralized way to get meta information about the quota subsystem.
129 : * eg. space taken up for user and group quotas, number of dquots currently
130 : * incore.
131 : */
132 : #define FS_QSTAT_VERSION 1 /* fs_quota_stat.qs_version */
133 :
134 : /*
135 : * Some basic information about 'quota files'.
136 : */
137 : typedef struct fs_qfilestat {
138 : __u64 qfs_ino; /* inode number */
139 : __u64 qfs_nblks; /* number of BBs 512-byte-blks */
140 : __u32 qfs_nextents; /* number of extents */
141 1 : } fs_qfilestat_t;
142 1 :
143 : typedef struct fs_quota_stat {
144 : __s8 qs_version; /* version number for future changes */
145 : __u16 qs_flags; /* XFS_QUOTA_{U,P,G}DQ_{ACCT,ENFD} */
146 : __s8 qs_pad; /* unused */
147 : fs_qfilestat_t qs_uquota; /* user quota storage information */
148 : fs_qfilestat_t qs_gquota; /* group quota storage information */
149 : __u32 qs_incoredqs; /* number of dquots incore */
150 : __s32 qs_btimelimit; /* limit for blks timer */
151 : __s32 qs_itimelimit; /* limit for inodes timer */
152 : __s32 qs_rtbtimelimit;/* limit for rt blks timer */
153 : __u16 qs_bwarnlimit; /* limit for num warnings */
154 : __u16 qs_iwarnlimit; /* limit for num warnings */
155 : } fs_quota_stat_t;
156 1 :
157 : #endif /* _LINUX_DQBLK_XFS_H */
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