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 43 /* 44 * fs_disk_quota structure: 45 * 46 * This contains the current quota information regarding a user/proj/group. 47 * It is 64-bit aligned, and all the blk units are in BBs (Basic Blocks) of 48 * 512 bytes. 49 */ 50 #define FS_DQUOT_VERSION 1 /* fs_disk_quota.d_version */ 51 typedef struct fs_disk_quota { 52 __s8 d_version; /* version of this structure */ 53 __s8 d_flags; /* FS_{USER,PROJ,GROUP}_QUOTA */ 54 __u16 d_fieldmask; /* field specifier */ 55 __u32 d_id; /* user, project, or group ID */ 56 __u64 d_blk_hardlimit;/* absolute limit on disk blks */ 57 __u64 d_blk_softlimit;/* preferred limit on disk blks */ 58 __u64 d_ino_hardlimit;/* maximum # allocated inodes */ 59 __u64 d_ino_softlimit;/* preferred inode limit */ 60 __u64 d_bcount; /* # disk blocks owned by the user */ 61 __u64 d_icount; /* # inodes owned by the user */ 62 __s32 d_itimer; /* zero if within inode limits */ 63 /* if not, we refuse service */ 64 __s32 d_btimer; /* similar to above; for disk blocks */ 65 __u16 d_iwarns; /* # warnings issued wrt num inodes */ 66 __u16 d_bwarns; /* # warnings issued wrt disk blocks */ 67 __s32 d_padding2; /* padding2 - for future use */ 68 __u64 d_rtb_hardlimit;/* absolute limit on realtime blks */ 69 __u64 d_rtb_softlimit;/* preferred limit on RT disk blks */ 70 __u64 d_rtbcount; /* # realtime blocks owned */ 71 __s32 d_rtbtimer; /* similar to above; for RT disk blks */ 72 __u16 d_rtbwarns; /* # warnings issued wrt RT disk blks */ 73 __s16 d_padding3; /* padding3 - for future use */ 74 char d_padding4[8]; /* yet more padding */ 75 } fs_disk_quota_t; 76 77 /* 78 * These fields are sent to Q_XSETQLIM to specify fields that need to change. 79 */ 80 #define FS_DQ_ISOFT (1<<0) 81 #define FS_DQ_IHARD (1<<1) 82 #define FS_DQ_BSOFT (1<<2) 83 #define FS_DQ_BHARD (1<<3) 84 #define FS_DQ_RTBSOFT (1<<4) 85 #define FS_DQ_RTBHARD (1<<5) 86 #define FS_DQ_LIMIT_MASK (FS_DQ_ISOFT | FS_DQ_IHARD | FS_DQ_BSOFT | \ 87 FS_DQ_BHARD | FS_DQ_RTBSOFT | FS_DQ_RTBHARD) 88 /* 89 * These timers can only be set in super user's dquot. For others, timers are 90 * automatically started and stopped. Superusers timer values set the limits 91 * for the rest. In case these values are zero, the DQ_{F,B}TIMELIMIT values 92 * defined below are used. 93 * These values also apply only to the d_fieldmask field for Q_XSETQLIM. 94 */ 95 #define FS_DQ_BTIMER (1<<6) 96 #define FS_DQ_ITIMER (1<<7) 97 #define FS_DQ_RTBTIMER (1<<8) 98 #define FS_DQ_TIMER_MASK (FS_DQ_BTIMER | FS_DQ_ITIMER | FS_DQ_RTBTIMER) 99 100 /* 101 * Warning counts are set in both super user's dquot and others. For others, 102 * warnings are set/cleared by the administrators (or automatically by going 103 * below the soft limit). Superusers warning values set the warning limits 104 * for the rest. In case these values are zero, the DQ_{F,B}WARNLIMIT values 105 * defined below are used. 106 * These values also apply only to the d_fieldmask field for Q_XSETQLIM. 107 */ 108 #define FS_DQ_BWARNS (1<<9) 109 #define FS_DQ_IWARNS (1<<10) 110 #define FS_DQ_RTBWARNS (1<<11) 111 #define FS_DQ_WARNS_MASK (FS_DQ_BWARNS | FS_DQ_IWARNS | FS_DQ_RTBWARNS) 112 113 /* 114 * Accounting values. These can only be set for filesystem with 115 * non-transactional quotas that require quotacheck(8) in userspace. 116 */ 117 #define FS_DQ_BCOUNT (1<<12) 118 #define FS_DQ_ICOUNT (1<<13) 119 #define FS_DQ_RTBCOUNT (1<<14) 120 #define FS_DQ_ACCT_MASK (FS_DQ_BCOUNT | FS_DQ_ICOUNT | FS_DQ_RTBCOUNT) 121 122 /* 123 * Various flags related to quotactl(2). 124 */ 125 #define FS_QUOTA_UDQ_ACCT (1<<0) /* user quota accounting */ 126 #define FS_QUOTA_UDQ_ENFD (1<<1) /* user quota limits enforcement */ 127 #define FS_QUOTA_GDQ_ACCT (1<<2) /* group quota accounting */ 128 #define FS_QUOTA_GDQ_ENFD (1<<3) /* group quota limits enforcement */ 129 #define FS_QUOTA_PDQ_ACCT (1<<4) /* project quota accounting */ 130 #define FS_QUOTA_PDQ_ENFD (1<<5) /* project quota limits enforcement */ 131 132 #define FS_USER_QUOTA (1<<0) /* user quota type */ 133 #define FS_PROJ_QUOTA (1<<1) /* project quota type */ 134 #define FS_GROUP_QUOTA (1<<2) /* group quota type */ 135 136 /* 137 * fs_quota_stat is the struct returned in Q_XGETQSTAT for a given file system. 138 * Provides a centralized way to get meta information about the quota subsystem. 139 * eg. space taken up for user and group quotas, number of dquots currently 140 * incore. 141 */ 142 #define FS_QSTAT_VERSION 1 /* fs_quota_stat.qs_version */ 143 144 /* 145 * Some basic information about 'quota files'. 146 */ 147 typedef struct fs_qfilestat { 148 __u64 qfs_ino; /* inode number */ 149 __u64 qfs_nblks; /* number of BBs 512-byte-blks */ 150 __u32 qfs_nextents; /* number of extents */ 151 } fs_qfilestat_t; 152 153 typedef struct fs_quota_stat { 154 __s8 qs_version; /* version number for future changes */ 155 __u16 qs_flags; /* FS_QUOTA_{U,P,G}DQ_{ACCT,ENFD} */ 156 __s8 qs_pad; /* unused */ 157 fs_qfilestat_t qs_uquota; /* user quota storage information */ 158 fs_qfilestat_t qs_gquota; /* group quota storage information */ 159 __u32 qs_incoredqs; /* number of dquots incore */ 160 __s32 qs_btimelimit; /* limit for blks timer */ 161 __s32 qs_itimelimit; /* limit for inodes timer */ 162 __s32 qs_rtbtimelimit;/* limit for rt blks timer */ 163 __u16 qs_bwarnlimit; /* limit for num warnings */ 164 __u16 qs_iwarnlimit; /* limit for num warnings */ 165 } fs_quota_stat_t; 166 167 /* 168 * fs_quota_statv is used by Q_XGETQSTATV for a given file system. It provides 169 * a centralized way to get meta information about the quota subsystem. eg. 170 * space taken up for user, group, and project quotas, number of dquots 171 * currently incore. 172 * 173 * This version has proper versioning support with appropriate padding for 174 * future expansions, and ability to expand for future without creating any 175 * backward compatibility issues. 176 * 177 * Q_XGETQSTATV uses the passed in value of the requested version via 178 * fs_quota_statv.qs_version to determine the return data layout of 179 * fs_quota_statv. The kernel will fill the data fields relevant to that 180 * version. 181 * 182 * If kernel does not support user space caller specified version, EINVAL will 183 * be returned. User space caller can then reduce the version number and retry 184 * the same command. 185 */ 186 #define FS_QSTATV_VERSION1 1 /* fs_quota_statv.qs_version */ 187 /* 188 * Some basic information about 'quota files' for Q_XGETQSTATV command 189 */ 190 struct fs_qfilestatv { 191 __u64 qfs_ino; /* inode number */ 192 __u64 qfs_nblks; /* number of BBs 512-byte-blks */ 193 __u32 qfs_nextents; /* number of extents */ 194 __u32 qfs_pad; /* pad for 8-byte alignment */ 195 }; 196 197 struct fs_quota_statv { 198 __s8 qs_version; /* version for future changes */ 199 __u8 qs_pad1; /* pad for 16bit alignment */ 200 __u16 qs_flags; /* FS_QUOTA_.* flags */ 201 __u32 qs_incoredqs; /* number of dquots incore */ 202 struct fs_qfilestatv qs_uquota; /* user quota information */ 203 struct fs_qfilestatv qs_gquota; /* group quota information */ 204 struct fs_qfilestatv qs_pquota; /* project quota information */ 205 __s32 qs_btimelimit; /* limit for blks timer */ 206 __s32 qs_itimelimit; /* limit for inodes timer */ 207 __s32 qs_rtbtimelimit;/* limit for rt blks timer */ 208 __u16 qs_bwarnlimit; /* limit for num warnings */ 209 __u16 qs_iwarnlimit; /* limit for num warnings */ 210 __u64 qs_pad2[8]; /* for future proofing */ 211 }; 212 213 #endif /* _LINUX_DQBLK_XFS_H */ 214