215 lines
8.7 KiB
C
215 lines
8.7 KiB
C
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/*
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* Copyright (c) 1995-2001,2004 Silicon Graphics, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesset General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _LINUX_DQBLK_XFS_H
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#define _LINUX_DQBLK_XFS_H
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#include <linux/types.h>
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/*
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* Disk quota - quotactl(2) commands for the XFS Quota Manager (XQM).
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*/
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#define XQM_CMD(x) (('X'<<8)+(x)) /* note: forms first QCMD argument */
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#define XQM_COMMAND(x) (((x) & (0xff<<8)) == ('X'<<8)) /* test if for XFS */
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#define XQM_USRQUOTA 0 /* system call user quota type */
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#define XQM_GRPQUOTA 1 /* system call group quota type */
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#define XQM_PRJQUOTA 2 /* system call project quota type */
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#define XQM_MAXQUOTAS 3
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#define Q_XQUOTAON XQM_CMD(1) /* enable accounting/enforcement */
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#define Q_XQUOTAOFF XQM_CMD(2) /* disable accounting/enforcement */
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#define Q_XGETQUOTA XQM_CMD(3) /* get disk limits and usage */
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#define Q_XSETQLIM XQM_CMD(4) /* set disk limits */
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#define Q_XGETQSTAT XQM_CMD(5) /* get quota subsystem status */
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#define Q_XQUOTARM XQM_CMD(6) /* free disk space used by dquots */
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#define Q_XQUOTASYNC XQM_CMD(7) /* delalloc flush, updates dquots */
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#define Q_XGETQSTATV XQM_CMD(8) /* newer version of get quota */
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#define Q_XGETNEXTQUOTA XQM_CMD(9) /* get disk limits and usage >= ID */
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/*
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* fs_disk_quota structure:
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*
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* This contains the current quota information regarding a user/proj/group.
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* It is 64-bit aligned, and all the blk units are in BBs (Basic Blocks) of
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* 512 bytes.
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*/
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#define FS_DQUOT_VERSION 1 /* fs_disk_quota.d_version */
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typedef struct fs_disk_quota {
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__s8 d_version; /* version of this structure */
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__s8 d_flags; /* FS_{USER,PROJ,GROUP}_QUOTA */
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__u16 d_fieldmask; /* field specifier */
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__u32 d_id; /* user, project, or group ID */
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__u64 d_blk_hardlimit;/* absolute limit on disk blks */
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__u64 d_blk_softlimit;/* preferred limit on disk blks */
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__u64 d_ino_hardlimit;/* maximum # allocated inodes */
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__u64 d_ino_softlimit;/* preferred inode limit */
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__u64 d_bcount; /* # disk blocks owned by the user */
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__u64 d_icount; /* # inodes owned by the user */
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__s32 d_itimer; /* zero if within inode limits */
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/* if not, we refuse service */
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__s32 d_btimer; /* similar to above; for disk blocks */
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__u16 d_iwarns; /* # warnings issued wrt num inodes */
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__u16 d_bwarns; /* # warnings issued wrt disk blocks */
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__s32 d_padding2; /* padding2 - for future use */
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__u64 d_rtb_hardlimit;/* absolute limit on realtime blks */
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__u64 d_rtb_softlimit;/* preferred limit on RT disk blks */
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__u64 d_rtbcount; /* # realtime blocks owned */
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__s32 d_rtbtimer; /* similar to above; for RT disk blks */
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__u16 d_rtbwarns; /* # warnings issued wrt RT disk blks */
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__s16 d_padding3; /* padding3 - for future use */
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char d_padding4[8]; /* yet more padding */
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} fs_disk_quota_t;
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/*
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* These fields are sent to Q_XSETQLIM to specify fields that need to change.
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*/
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#define FS_DQ_ISOFT (1<<0)
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#define FS_DQ_IHARD (1<<1)
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#define FS_DQ_BSOFT (1<<2)
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#define FS_DQ_BHARD (1<<3)
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#define FS_DQ_RTBSOFT (1<<4)
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#define FS_DQ_RTBHARD (1<<5)
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#define FS_DQ_LIMIT_MASK (FS_DQ_ISOFT | FS_DQ_IHARD | FS_DQ_BSOFT | \
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FS_DQ_BHARD | FS_DQ_RTBSOFT | FS_DQ_RTBHARD)
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/*
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* These timers can only be set in super user's dquot. For others, timers are
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* automatically started and stopped. Superusers timer values set the limits
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* for the rest. In case these values are zero, the DQ_{F,B}TIMELIMIT values
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* defined below are used.
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* These values also apply only to the d_fieldmask field for Q_XSETQLIM.
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*/
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#define FS_DQ_BTIMER (1<<6)
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#define FS_DQ_ITIMER (1<<7)
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#define FS_DQ_RTBTIMER (1<<8)
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#define FS_DQ_TIMER_MASK (FS_DQ_BTIMER | FS_DQ_ITIMER | FS_DQ_RTBTIMER)
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/*
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* Warning counts are set in both super user's dquot and others. For others,
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* warnings are set/cleared by the administrators (or automatically by going
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* below the soft limit). Superusers warning values set the warning limits
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* for the rest. In case these values are zero, the DQ_{F,B}WARNLIMIT values
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* defined below are used.
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* These values also apply only to the d_fieldmask field for Q_XSETQLIM.
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*/
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#define FS_DQ_BWARNS (1<<9)
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#define FS_DQ_IWARNS (1<<10)
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#define FS_DQ_RTBWARNS (1<<11)
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#define FS_DQ_WARNS_MASK (FS_DQ_BWARNS | FS_DQ_IWARNS | FS_DQ_RTBWARNS)
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/*
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* Accounting values. These can only be set for filesystem with
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* non-transactional quotas that require quotacheck(8) in userspace.
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*/
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#define FS_DQ_BCOUNT (1<<12)
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#define FS_DQ_ICOUNT (1<<13)
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#define FS_DQ_RTBCOUNT (1<<14)
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#define FS_DQ_ACCT_MASK (FS_DQ_BCOUNT | FS_DQ_ICOUNT | FS_DQ_RTBCOUNT)
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/*
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* Various flags related to quotactl(2).
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*/
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#define FS_QUOTA_UDQ_ACCT (1<<0) /* user quota accounting */
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#define FS_QUOTA_UDQ_ENFD (1<<1) /* user quota limits enforcement */
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#define FS_QUOTA_GDQ_ACCT (1<<2) /* group quota accounting */
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#define FS_QUOTA_GDQ_ENFD (1<<3) /* group quota limits enforcement */
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#define FS_QUOTA_PDQ_ACCT (1<<4) /* project quota accounting */
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#define FS_QUOTA_PDQ_ENFD (1<<5) /* project quota limits enforcement */
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#define FS_USER_QUOTA (1<<0) /* user quota type */
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#define FS_PROJ_QUOTA (1<<1) /* project quota type */
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#define FS_GROUP_QUOTA (1<<2) /* group quota type */
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/*
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* fs_quota_stat is the struct returned in Q_XGETQSTAT for a given file system.
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* Provides a centralized way to get meta information about the quota subsystem.
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* eg. space taken up for user and group quotas, number of dquots currently
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* incore.
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*/
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#define FS_QSTAT_VERSION 1 /* fs_quota_stat.qs_version */
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/*
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* Some basic information about 'quota files'.
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*/
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typedef struct fs_qfilestat {
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__u64 qfs_ino; /* inode number */
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__u64 qfs_nblks; /* number of BBs 512-byte-blks */
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__u32 qfs_nextents; /* number of extents */
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} fs_qfilestat_t;
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typedef struct fs_quota_stat {
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__s8 qs_version; /* version number for future changes */
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__u16 qs_flags; /* FS_QUOTA_{U,P,G}DQ_{ACCT,ENFD} */
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__s8 qs_pad; /* unused */
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fs_qfilestat_t qs_uquota; /* user quota storage information */
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fs_qfilestat_t qs_gquota; /* group quota storage information */
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__u32 qs_incoredqs; /* number of dquots incore */
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__s32 qs_btimelimit; /* limit for blks timer */
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__s32 qs_itimelimit; /* limit for inodes timer */
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__s32 qs_rtbtimelimit;/* limit for rt blks timer */
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__u16 qs_bwarnlimit; /* limit for num warnings */
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__u16 qs_iwarnlimit; /* limit for num warnings */
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} fs_quota_stat_t;
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/*
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* fs_quota_statv is used by Q_XGETQSTATV for a given file system. It provides
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* a centralized way to get meta information about the quota subsystem. eg.
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* space taken up for user, group, and project quotas, number of dquots
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* currently incore.
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*
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* This version has proper versioning support with appropriate padding for
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* future expansions, and ability to expand for future without creating any
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* backward compatibility issues.
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*
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* Q_XGETQSTATV uses the passed in value of the requested version via
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* fs_quota_statv.qs_version to determine the return data layout of
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* fs_quota_statv. The kernel will fill the data fields relevant to that
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* version.
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*
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* If kernel does not support user space caller specified version, EINVAL will
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* be returned. User space caller can then reduce the version number and retry
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* the same command.
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*/
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#define FS_QSTATV_VERSION1 1 /* fs_quota_statv.qs_version */
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/*
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* Some basic information about 'quota files' for Q_XGETQSTATV command
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*/
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struct fs_qfilestatv {
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__u64 qfs_ino; /* inode number */
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__u64 qfs_nblks; /* number of BBs 512-byte-blks */
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__u32 qfs_nextents; /* number of extents */
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__u32 qfs_pad; /* pad for 8-byte alignment */
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};
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struct fs_quota_statv {
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__s8 qs_version; /* version for future changes */
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__u8 qs_pad1; /* pad for 16bit alignment */
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__u16 qs_flags; /* FS_QUOTA_.* flags */
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__u32 qs_incoredqs; /* number of dquots incore */
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struct fs_qfilestatv qs_uquota; /* user quota information */
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struct fs_qfilestatv qs_gquota; /* group quota information */
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struct fs_qfilestatv qs_pquota; /* project quota information */
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__s32 qs_btimelimit; /* limit for blks timer */
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__s32 qs_itimelimit; /* limit for inodes timer */
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__s32 qs_rtbtimelimit;/* limit for rt blks timer */
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__u16 qs_bwarnlimit; /* limit for num warnings */
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__u16 qs_iwarnlimit; /* limit for num warnings */
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__u64 qs_pad2[8]; /* for future proofing */
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};
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#endif /* _LINUX_DQBLK_XFS_H */
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