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; /* FS_{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 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 * Accounting values. These can only be set for filesystem with 114 * non-transactional quotas that require quotacheck(8) in userspace. 115 */ 116 #define FS_DQ_BCOUNT (1<<12) 117 #define FS_DQ_ICOUNT (1<<13) 118 #define FS_DQ_RTBCOUNT (1<<14) 119 #define FS_DQ_ACCT_MASK (FS_DQ_BCOUNT | FS_DQ_ICOUNT | FS_DQ_RTBCOUNT) 120 121 /* 122 * Various flags related to quotactl(2). 123 */ 124 #define FS_QUOTA_UDQ_ACCT (1<<0) /* user quota accounting */ 125 #define FS_QUOTA_UDQ_ENFD (1<<1) /* user quota limits enforcement */ 126 #define FS_QUOTA_GDQ_ACCT (1<<2) /* group quota accounting */ 127 #define FS_QUOTA_GDQ_ENFD (1<<3) /* group quota limits enforcement */ 128 #define FS_QUOTA_PDQ_ACCT (1<<4) /* project quota accounting */ 129 #define FS_QUOTA_PDQ_ENFD (1<<5) /* project quota limits enforcement */ 130 131 #define FS_USER_QUOTA (1<<0) /* user quota type */ 132 #define FS_PROJ_QUOTA (1<<1) /* project quota type */ 133 #define FS_GROUP_QUOTA (1<<2) /* group quota type */ 134 135 /* 136 * fs_quota_stat is the struct returned in Q_XGETQSTAT for a given file system. 137 * Provides a centralized way to get meta information about the quota subsystem. 138 * eg. space taken up for user and group quotas, number of dquots currently 139 * incore. 140 */ 141 #define FS_QSTAT_VERSION 1 /* fs_quota_stat.qs_version */ 142 143 /* 144 * Some basic information about 'quota files'. 145 */ 146 typedef struct fs_qfilestat { 147 __u64 qfs_ino; /* inode number */ 148 __u64 qfs_nblks; /* number of BBs 512-byte-blks */ 149 __u32 qfs_nextents; /* number of extents */ 150 } fs_qfilestat_t; 151 152 typedef struct fs_quota_stat { 153 __s8 qs_version; /* version number for future changes */ 154 __u16 qs_flags; /* FS_QUOTA_{U,P,G}DQ_{ACCT,ENFD} */ 155 __s8 qs_pad; /* unused */ 156 fs_qfilestat_t qs_uquota; /* user quota storage information */ 157 fs_qfilestat_t qs_gquota; /* group quota storage information */ 158 __u32 qs_incoredqs; /* number of dquots incore */ 159 __s32 qs_btimelimit; /* limit for blks timer */ 160 __s32 qs_itimelimit; /* limit for inodes timer */ 161 __s32 qs_rtbtimelimit;/* limit for rt blks timer */ 162 __u16 qs_bwarnlimit; /* limit for num warnings */ 163 __u16 qs_iwarnlimit; /* limit for num warnings */ 164 } fs_quota_stat_t; 165 166 #endif /* _LINUX_DQBLK_XFS_H */ 167
