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Linux kernel mirror (for testing)
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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 modify it
5 * under the terms of version 2.1 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 General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
16 * USA
17 *
18 * Contact information: Silicon Graphics, Inc., 1500 Crittenden Lane,
19 * Mountain View, CA 94043, USA, or: http://www.sgi.com
20 */
21#ifndef _LINUX_DQBLK_XFS_H
22#define _LINUX_DQBLK_XFS_H
23
24#include <linux/types.h>
25
26/*
27 * Disk quota - quotactl(2) commands for the XFS Quota Manager (XQM).
28 */
29
30#define XQM_CMD(x) (('X'<<8)+(x)) /* note: forms first QCMD argument */
31#define XQM_COMMAND(x) (((x) & (0xff<<8)) == ('X'<<8)) /* test if for XFS */
32
33#define XQM_USRQUOTA 0 /* system call user quota type */
34#define XQM_GRPQUOTA 1 /* system call group quota type */
35#define XQM_MAXQUOTAS 2
36
37#define Q_XQUOTAON XQM_CMD(1) /* enable accounting/enforcement */
38#define Q_XQUOTAOFF XQM_CMD(2) /* disable accounting/enforcement */
39#define Q_XGETQUOTA XQM_CMD(3) /* get disk limits and usage */
40#define Q_XSETQLIM XQM_CMD(4) /* set disk limits */
41#define Q_XGETQSTAT XQM_CMD(5) /* get quota subsystem status */
42#define Q_XQUOTARM XQM_CMD(6) /* free disk space used by dquots */
43
44/*
45 * fs_disk_quota structure:
46 *
47 * This contains the current quota information regarding a user/proj/group.
48 * It is 64-bit aligned, and all the blk units are in BBs (Basic Blocks) of
49 * 512 bytes.
50 */
51#define FS_DQUOT_VERSION 1 /* fs_disk_quota.d_version */
52typedef struct fs_disk_quota {
53 __s8 d_version; /* version of this structure */
54 __s8 d_flags; /* XFS_{USER,PROJ,GROUP}_QUOTA */
55 __u16 d_fieldmask; /* field specifier */
56 __u32 d_id; /* user, project, or group ID */
57 __u64 d_blk_hardlimit;/* absolute limit on disk blks */
58 __u64 d_blk_softlimit;/* preferred limit on disk blks */
59 __u64 d_ino_hardlimit;/* maximum # allocated inodes */
60 __u64 d_ino_softlimit;/* preferred inode limit */
61 __u64 d_bcount; /* # disk blocks owned by the user */
62 __u64 d_icount; /* # inodes owned by the user */
63 __s32 d_itimer; /* zero if within inode limits */
64 /* if not, we refuse service */
65 __s32 d_btimer; /* similar to above; for disk blocks */
66 __u16 d_iwarns; /* # warnings issued wrt num inodes */
67 __u16 d_bwarns; /* # warnings issued wrt disk blocks */
68 __s32 d_padding2; /* padding2 - for future use */
69 __u64 d_rtb_hardlimit;/* absolute limit on realtime blks */
70 __u64 d_rtb_softlimit;/* preferred limit on RT disk blks */
71 __u64 d_rtbcount; /* # realtime blocks owned */
72 __s32 d_rtbtimer; /* similar to above; for RT disk blks */
73 __u16 d_rtbwarns; /* # warnings issued wrt RT disk blks */
74 __s16 d_padding3; /* padding3 - for future use */
75 char d_padding4[8]; /* yet more padding */
76} fs_disk_quota_t;
77
78/*
79 * These fields are sent to Q_XSETQLIM to specify fields that need to change.
80 */
81#define FS_DQ_ISOFT (1<<0)
82#define FS_DQ_IHARD (1<<1)
83#define FS_DQ_BSOFT (1<<2)
84#define FS_DQ_BHARD (1<<3)
85#define FS_DQ_RTBSOFT (1<<4)
86#define FS_DQ_RTBHARD (1<<5)
87#define FS_DQ_LIMIT_MASK (FS_DQ_ISOFT | FS_DQ_IHARD | FS_DQ_BSOFT | \
88 FS_DQ_BHARD | FS_DQ_RTBSOFT | FS_DQ_RTBHARD)
89/*
90 * These timers can only be set in super user's dquot. For others, timers are
91 * automatically started and stopped. Superusers timer values set the limits
92 * for the rest. In case these values are zero, the DQ_{F,B}TIMELIMIT values
93 * defined below are used.
94 * These values also apply only to the d_fieldmask field for Q_XSETQLIM.
95 */
96#define FS_DQ_BTIMER (1<<6)
97#define FS_DQ_ITIMER (1<<7)
98#define FS_DQ_RTBTIMER (1<<8)
99#define FS_DQ_TIMER_MASK (FS_DQ_BTIMER | FS_DQ_ITIMER | FS_DQ_RTBTIMER)
100
101/*
102 * Warning counts are set in both super user's dquot and others. For others,
103 * warnings are set/cleared by the administrators (or automatically by going
104 * below the soft limit). Superusers warning values set the warning limits
105 * for the rest. In case these values are zero, the DQ_{F,B}WARNLIMIT values
106 * defined below are used.
107 * These values also apply only to the d_fieldmask field for Q_XSETQLIM.
108 */
109#define FS_DQ_BWARNS (1<<9)
110#define FS_DQ_IWARNS (1<<10)
111#define FS_DQ_RTBWARNS (1<<11)
112#define FS_DQ_WARNS_MASK (FS_DQ_BWARNS | FS_DQ_IWARNS | FS_DQ_RTBWARNS)
113
114/*
115 * Various flags related to quotactl(2). Only relevant to XFS filesystems.
116 */
117#define XFS_QUOTA_UDQ_ACCT (1<<0) /* user quota accounting */
118#define XFS_QUOTA_UDQ_ENFD (1<<1) /* user quota limits enforcement */
119#define XFS_QUOTA_GDQ_ACCT (1<<2) /* group quota accounting */
120#define XFS_QUOTA_GDQ_ENFD (1<<3) /* group quota limits enforcement */
121#define XFS_QUOTA_PDQ_ACCT (1<<4) /* project quota accounting */
122#define XFS_QUOTA_PDQ_ENFD (1<<5) /* project quota limits enforcement */
123
124#define XFS_USER_QUOTA (1<<0) /* user quota type */
125#define XFS_PROJ_QUOTA (1<<1) /* project quota type */
126#define XFS_GROUP_QUOTA (1<<2) /* group quota type */
127
128/*
129 * fs_quota_stat is the struct returned in Q_XGETQSTAT for a given file system.
130 * Provides a centralized way to get meta infomation about the quota subsystem.
131 * eg. space taken up for user and group quotas, number of dquots currently
132 * incore.
133 */
134#define FS_QSTAT_VERSION 1 /* fs_quota_stat.qs_version */
135
136/*
137 * Some basic infomation about 'quota files'.
138 */
139typedef struct fs_qfilestat {
140 __u64 qfs_ino; /* inode number */
141 __u64 qfs_nblks; /* number of BBs 512-byte-blks */
142 __u32 qfs_nextents; /* number of extents */
143} fs_qfilestat_t;
144
145typedef struct fs_quota_stat {
146 __s8 qs_version; /* version number for future changes */
147 __u16 qs_flags; /* XFS_QUOTA_{U,P,G}DQ_{ACCT,ENFD} */
148 __s8 qs_pad; /* unused */
149 fs_qfilestat_t qs_uquota; /* user quota storage information */
150 fs_qfilestat_t qs_gquota; /* group quota storage information */
151 __u32 qs_incoredqs; /* number of dquots incore */
152 __s32 qs_btimelimit; /* limit for blks timer */
153 __s32 qs_itimelimit; /* limit for inodes timer */
154 __s32 qs_rtbtimelimit;/* limit for rt blks timer */
155 __u16 qs_bwarnlimit; /* limit for num warnings */
156 __u16 qs_iwarnlimit; /* limit for num warnings */
157} fs_quota_stat_t;
158
159#endif /* _LINUX_DQBLK_XFS_H */