2 * Copyright (c) 1995-2001,2004 Silicon Graphics, Inc. All Rights Reserved.
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.
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.
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
17 #ifndef _LINUX_DQBLK_XFS_H
18 #define _LINUX_DQBLK_XFS_H
20 #include <linux/types.h>
23 * Disk quota - quotactl(2) commands for the XFS Quota Manager (XQM).
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 */
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
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 */
43 * fs_disk_quota structure:
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
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 */
77 * These fields are sent to Q_XSETQLIM to specify fields that need to change.
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)
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.
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)
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.
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)
113 * Various flags related to quotactl(2). Only relevant to XFS filesystems.
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 */
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 */
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
132 #define FS_QSTAT_VERSION 1 /* fs_quota_stat.qs_version */
135 * Some basic information about 'quota files'.
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 */
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 */
157 #endif /* _LINUX_DQBLK_XFS_H */
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