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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 */
41 #define Q_XGETQSTATV XQM_CMD(8) /* newer version of get quota */
42 #define Q_XGETNEXTQUOTA XQM_CMD(9) /* get disk limits and usage >= ID */
45 * fs_disk_quota structure:
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
51 #define FS_DQUOT_VERSION 1 /* fs_disk_quota.d_version */
52 typedef struct fs_disk_quota
{
53 __s8 d_version
; /* version of this structure */
54 __s8 d_flags
; /* FS_{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 */
79 * These fields are sent to Q_XSETQLIM to specify fields that need to change.
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)
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.
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)
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.
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)
115 * Accounting values. These can only be set for filesystem with
116 * non-transactional quotas that require quotacheck(8) in userspace.
118 #define FS_DQ_BCOUNT (1<<12)
119 #define FS_DQ_ICOUNT (1<<13)
120 #define FS_DQ_RTBCOUNT (1<<14)
121 #define FS_DQ_ACCT_MASK (FS_DQ_BCOUNT | FS_DQ_ICOUNT | FS_DQ_RTBCOUNT)
124 * Various flags related to quotactl(2).
126 #define FS_QUOTA_UDQ_ACCT (1<<0) /* user quota accounting */
127 #define FS_QUOTA_UDQ_ENFD (1<<1) /* user quota limits enforcement */
128 #define FS_QUOTA_GDQ_ACCT (1<<2) /* group quota accounting */
129 #define FS_QUOTA_GDQ_ENFD (1<<3) /* group quota limits enforcement */
130 #define FS_QUOTA_PDQ_ACCT (1<<4) /* project quota accounting */
131 #define FS_QUOTA_PDQ_ENFD (1<<5) /* project quota limits enforcement */
133 #define FS_USER_QUOTA (1<<0) /* user quota type */
134 #define FS_PROJ_QUOTA (1<<1) /* project quota type */
135 #define FS_GROUP_QUOTA (1<<2) /* group quota type */
138 * fs_quota_stat is the struct returned in Q_XGETQSTAT for a given file system.
139 * Provides a centralized way to get meta information about the quota subsystem.
140 * eg. space taken up for user and group quotas, number of dquots currently
143 #define FS_QSTAT_VERSION 1 /* fs_quota_stat.qs_version */
146 * Some basic information about 'quota files'.
148 typedef struct fs_qfilestat
{
149 __u64 qfs_ino
; /* inode number */
150 __u64 qfs_nblks
; /* number of BBs 512-byte-blks */
151 __u32 qfs_nextents
; /* number of extents */
154 typedef struct fs_quota_stat
{
155 __s8 qs_version
; /* version number for future changes */
156 __u16 qs_flags
; /* FS_QUOTA_{U,P,G}DQ_{ACCT,ENFD} */
157 __s8 qs_pad
; /* unused */
158 fs_qfilestat_t qs_uquota
; /* user quota storage information */
159 fs_qfilestat_t qs_gquota
; /* group quota storage information */
160 __u32 qs_incoredqs
; /* number of dquots incore */
161 __s32 qs_btimelimit
; /* limit for blks timer */
162 __s32 qs_itimelimit
; /* limit for inodes timer */
163 __s32 qs_rtbtimelimit
;/* limit for rt blks timer */
164 __u16 qs_bwarnlimit
; /* limit for num warnings */
165 __u16 qs_iwarnlimit
; /* limit for num warnings */
169 * fs_quota_statv is used by Q_XGETQSTATV for a given file system. It provides
170 * a centralized way to get meta information about the quota subsystem. eg.
171 * space taken up for user, group, and project quotas, number of dquots
174 * This version has proper versioning support with appropriate padding for
175 * future expansions, and ability to expand for future without creating any
176 * backward compatibility issues.
178 * Q_XGETQSTATV uses the passed in value of the requested version via
179 * fs_quota_statv.qs_version to determine the return data layout of
180 * fs_quota_statv. The kernel will fill the data fields relevant to that
183 * If kernel does not support user space caller specified version, EINVAL will
184 * be returned. User space caller can then reduce the version number and retry
187 #define FS_QSTATV_VERSION1 1 /* fs_quota_statv.qs_version */
189 * Some basic information about 'quota files' for Q_XGETQSTATV command
191 struct fs_qfilestatv
{
192 __u64 qfs_ino
; /* inode number */
193 __u64 qfs_nblks
; /* number of BBs 512-byte-blks */
194 __u32 qfs_nextents
; /* number of extents */
195 __u32 qfs_pad
; /* pad for 8-byte alignment */
198 struct fs_quota_statv
{
199 __s8 qs_version
; /* version for future changes */
200 __u8 qs_pad1
; /* pad for 16bit alignment */
201 __u16 qs_flags
; /* FS_QUOTA_.* flags */
202 __u32 qs_incoredqs
; /* number of dquots incore */
203 struct fs_qfilestatv qs_uquota
; /* user quota information */
204 struct fs_qfilestatv qs_gquota
; /* group quota information */
205 struct fs_qfilestatv qs_pquota
; /* project quota information */
206 __s32 qs_btimelimit
; /* limit for blks timer */
207 __s32 qs_itimelimit
; /* limit for inodes timer */
208 __s32 qs_rtbtimelimit
;/* limit for rt blks timer */
209 __u16 qs_bwarnlimit
; /* limit for num warnings */
210 __u16 qs_iwarnlimit
; /* limit for num warnings */
211 __u64 qs_pad2
[8]; /* for future proofing */
214 #endif /* _LINUX_DQBLK_XFS_H */