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/*

 * Copyright (c) 1995-2001,2004 Silicon Graphics, Inc.  All Rights Reserved.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public License

 * as published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesset General Public License

 * along with this program; if not, write to the Free Software Foundation,

 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 */

#ifndef _LINUX_DQBLK_XFS_H

#define _LINUX_DQBLK_XFS_H

#include <linux/types.h>

/*

 * Disk quota - quotactl(2) commands for the XFS Quota Manager (XQM).

 */

#define XQM_CMD(x)      (('X'<<8)+(x))  /* note: forms first QCMD argument */

#define XQM_COMMAND(x)  (((x) & (0xff<<8)) == ('X'<<8)) /* test if for XFS */

#define XQM_USRQUOTA    0        /* system call user quota type */

#define XQM_GRPQUOTA    1       /* system call group quota type */

#define XQM_PRJQUOTA    2       /* system call project quota type */

#define XQM_MAXQUOTAS   3

#define Q_XQUOTAON      XQM_CMD(1)      /* enable accounting/enforcement */

#define Q_XQUOTAOFF     XQM_CMD(2)      /* disable accounting/enforcement */

#define Q_XGETQUOTA     XQM_CMD(3)      /* get disk limits and usage */

#define Q_XSETQLIM      XQM_CMD(4)      /* set disk limits */

#define Q_XGETQSTAT     XQM_CMD(5)      /* get quota subsystem status */

#define Q_XQUOTARM      XQM_CMD(6)      /* free disk space used by dquots */

#define Q_XQUOTASYNC    XQM_CMD(7)      /* delalloc flush, updates dquots */

/*

 * fs_disk_quota structure:

 *

 * This contains the current quota information regarding a user/proj/group.

 * It is 64-bit aligned, and all the blk units are in BBs (Basic Blocks) of

 * 512 bytes.

 */

#define FS_DQUOT_VERSION        1       /* fs_disk_quota.d_version */

typedef struct fs_disk_quota {

        __s8            d_version;      /* version of this structure */

        __s8            d_flags;        /* XFS_{USER,PROJ,GROUP}_QUOTA */

        __u16           d_fieldmask;    /* field specifier */

        __u32           d_id;           /* user, project, or group ID */

        __u64           d_blk_hardlimit;/* absolute limit on disk blks */

        __u64           d_blk_softlimit;/* preferred limit on disk blks */

        __u64           d_ino_hardlimit;/* maximum # allocated inodes */

        __u64           d_ino_softlimit;/* preferred inode limit */

        __u64           d_bcount;       /* # disk blocks owned by the user */

        __u64           d_icount;       /* # inodes owned by the user */

        __s32           d_itimer;       /* zero if within inode limits */

                                        /* if not, we refuse service */

        __s32           d_btimer;       /* similar to above; for disk blocks */

        __u16           d_iwarns;       /* # warnings issued wrt num inodes */

        __u16           d_bwarns;       /* # warnings issued wrt disk blocks */

        __s32           d_padding2;     /* padding2 - for future use */

        __u64           d_rtb_hardlimit;/* absolute limit on realtime blks */

        __u64           d_rtb_softlimit;/* preferred limit on RT disk blks */

        __u64           d_rtbcount;     /* # realtime blocks owned */

        __s32           d_rtbtimer;     /* similar to above; for RT disk blks */

        __u16           d_rtbwarns;     /* # warnings issued wrt RT disk blks */

        __s16           d_padding3;     /* padding3 - for future use */

        char            d_padding4[8];  /* yet more padding */

} fs_disk_quota_t;

/*

 * These fields are sent to Q_XSETQLIM to specify fields that need to change.

 */

#define FS_DQ_ISOFT     (1<<0)

#define FS_DQ_IHARD     (1<<1)

#define FS_DQ_BSOFT     (1<<2)

#define FS_DQ_BHARD     (1<<3)

#define FS_DQ_RTBSOFT   (1<<4)

#define FS_DQ_RTBHARD   (1<<5)

#define FS_DQ_LIMIT_MASK        (FS_DQ_ISOFT | FS_DQ_IHARD | FS_DQ_BSOFT | \

                                 FS_DQ_BHARD | FS_DQ_RTBSOFT | FS_DQ_RTBHARD)

/*

 * These timers can only be set in super user's dquot. For others, timers are

 * automatically started and stopped. Superusers timer values set the limits

 * for the rest.  In case these values are zero, the DQ_{F,B}TIMELIMIT values

 * defined below are used.

 * These values also apply only to the d_fieldmask field for Q_XSETQLIM.

 */

#define FS_DQ_BTIMER    (1<<6)

#define FS_DQ_ITIMER    (1<<7)

#define FS_DQ_RTBTIMER  (1<<8)

#define FS_DQ_TIMER_MASK        (FS_DQ_BTIMER | FS_DQ_ITIMER | FS_DQ_RTBTIMER)

/*

 * Warning counts are set in both super user's dquot and others. For others,

 * warnings are set/cleared by the administrators (or automatically by going

 * below the soft limit).  Superusers warning values set the warning limits

 * for the rest.  In case these values are zero, the DQ_{F,B}WARNLIMIT values

 * defined below are used.

 * These values also apply only to the d_fieldmask field for Q_XSETQLIM.

 */

#define FS_DQ_BWARNS    (1<<9)

#define FS_DQ_IWARNS    (1<<10)

#define FS_DQ_RTBWARNS  (1<<11)

#define FS_DQ_WARNS_MASK        (FS_DQ_BWARNS | FS_DQ_IWARNS | FS_DQ_RTBWARNS)

/*

 * Various flags related to quotactl(2).  Only relevant to XFS filesystems.

 */

#define XFS_QUOTA_UDQ_ACCT      (1<<0)  /* user quota accounting */

#define XFS_QUOTA_UDQ_ENFD      (1<<1)  /* user quota limits enforcement */

#define XFS_QUOTA_GDQ_ACCT      (1<<2)  /* group quota accounting */

#define XFS_QUOTA_GDQ_ENFD      (1<<3)  /* group quota limits enforcement */

#define XFS_QUOTA_PDQ_ACCT      (1<<4)  /* project quota accounting */

#define XFS_QUOTA_PDQ_ENFD      (1<<5)  /* project quota limits enforcement */

#define XFS_USER_QUOTA          (1<<0)  /* user quota type */

#define XFS_PROJ_QUOTA          (1<<1)  /* project quota type */

#define XFS_GROUP_QUOTA         (1<<2)  /* group quota type */

/*

 * fs_quota_stat is the struct returned in Q_XGETQSTAT for a given file system.

 * Provides a centralized way to get meta information about the quota subsystem.

 * eg. space taken up for user and group quotas, number of dquots currently

 * incore.

 */

#define FS_QSTAT_VERSION        1       /* fs_quota_stat.qs_version */

/*

 * Some basic information about 'quota files'.

 */

typedef struct fs_qfilestat {

        __u64           qfs_ino;        /* inode number */

        __u64           qfs_nblks;      /* number of BBs 512-byte-blks */

        __u32           qfs_nextents;   /* number of extents */

} fs_qfilestat_t;

typedef struct fs_quota_stat {

        __s8            qs_version;     /* version number for future changes */

        __u16           qs_flags;       /* XFS_QUOTA_{U,P,G}DQ_{ACCT,ENFD} */

        __s8            qs_pad;         /* unused */

        fs_qfilestat_t  qs_uquota;      /* user quota storage information */

        fs_qfilestat_t  qs_gquota;      /* group quota storage information */

        __u32           qs_incoredqs;   /* number of dquots incore */

        __s32           qs_btimelimit;  /* limit for blks timer */

        __s32           qs_itimelimit;  /* limit for inodes timer */

        __s32           qs_rtbtimelimit;/* limit for rt blks timer */

        __u16           qs_bwarnlimit;  /* limit for num warnings */

        __u16           qs_iwarnlimit;  /* limit for num warnings */

} fs_quota_stat_t;

#endif  /* _LINUX_DQBLK_XFS_H */