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 #define Q_XGETQSTATV XQM_CMD(8) /* newer version of get quota */ 42 #define Q_XGETNEXTQUOTA XQM_CMD(9) /* get disk limits and usage >= ID */ 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 */ 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 */ 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 * Accounting values. These can only be set for filesystem with 116 * non-transactional quotas that require quotacheck(8) in userspace. 117 */ 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) 122 123 /* 124 * Various flags related to quotactl(2). 125 */ 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 */ 132 133 #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 */ 136 137 /* 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 141 * incore. 142 */ 143 #define FS_QSTAT_VERSION 1 /* fs_quota_stat.qs_version */ 144 145 /* 146 * Some basic information about 'quota files'. 147 */ 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 */ 152 } fs_qfilestat_t; 153 154 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 */ 166 } fs_quota_stat_t; 167 168 /* 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 172 * currently incore. 173 * 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. 177 * 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 181 * version. 182 * 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 185 * the same command. 186 */ 187 #define FS_QSTATV_VERSION1 1 /* fs_quota_statv.qs_version */ 188 /* 189 * Some basic information about 'quota files' for Q_XGETQSTATV command 190 */ 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 */ 196 }; 197 198 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 */ 212 }; 213 214 #endif /* _LINUX_DQBLK_XFS_H */ 215
