include/xfs_dqblk.h

   1 /*
   2  * Copyright (c) 2000-2001 Silicon Graphics, Inc.  All Rights Reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of version 2 of the GNU General Public License as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it would be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  11  *
  12  * Further, this software is distributed without any warranty that it is
  13  * free of the rightful claim of any third person regarding infringement
  14  * or the like.  Any license provided herein, whether implied or
  15  * otherwise, applies only to this software file.  Patent licenses, if
  16  * any, provided herein do not apply to combinations of this program with
  17  * other software, or any other product whatsoever.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write the Free Software Foundation, Inc., 59
  21  * Temple Place - Suite 330, Boston MA 02111-1307, USA.
  22  *
  23  * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
  24  * Mountain View, CA  94043, or:
  25  *
  26  * http://www.sgi.com
  27  *
  28  * For further information regarding this notice, see:
  29  *
  30  * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
  31  */
  32 #ifndef __XFS_DQBLK_H__
  33 #define __XFS_DQBLK_H__
  34
  35 /*
  36  * The ondisk form of a dquot structure.
  37  */
  38 #define XFS_DQUOT_MAGIC         0x4451          /* 'DQ' */
  39 #define XFS_DQUOT_VERSION       (u_int8_t)0x01  /* latest version number */
  40
  41 /*
  42  * This is the main portion of the on-disk representation of quota
  43  * information for a user. This is the q_core of the xfs_dquot_t that
  44  * is kept in kernel memory. We pad this with some more expansion room
  45  * to construct the on disk structure.
  46  */
  47 typedef struct  xfs_disk_dquot {
  48 /*16*/  u_int16_t       d_magic;        /* dquot magic = XFS_DQUOT_MAGIC */
  49 /*8 */  u_int8_t        d_version;      /* dquot version */
  50 /*8 */  u_int8_t        d_flags;        /* XFS_DQ_USER/PROJ/GROUP */
  51 /*32*/  xfs_dqid_t      d_id;           /* user,project,group id */
  52 /*64*/  xfs_qcnt_t      d_blk_hardlimit;/* absolute limit on disk blks */
  53 /*64*/  xfs_qcnt_t      d_blk_softlimit;/* preferred limit on disk blks */
  54 /*64*/  xfs_qcnt_t      d_ino_hardlimit;/* maximum # allocated inodes */
  55 /*64*/  xfs_qcnt_t      d_ino_softlimit;/* preferred inode limit */
  56 /*64*/  xfs_qcnt_t      d_bcount;       /* disk blocks owned by the user */
  57 /*64*/  xfs_qcnt_t      d_icount;       /* inodes owned by the user */
  58 /*32*/  __int32_t       d_itimer;       /* zero if within inode limits if not,
  59                                            this is when we refuse service */
  60 /*32*/  __int32_t       d_btimer;       /* similar to above; for disk blocks */
  61 /*16*/  xfs_qwarncnt_t  d_iwarns;       /* warnings issued wrt num inodes */
  62 /*16*/  xfs_qwarncnt_t  d_bwarns;       /* warnings issued wrt disk blocks */
  63 /*32*/  __int32_t       d_pad0;         /* 64 bit align */
  64 /*64*/  xfs_qcnt_t      d_rtb_hardlimit;/* absolute limit on realtime blks */
  65 /*64*/  xfs_qcnt_t      d_rtb_softlimit;/* preferred limit on RT disk blks */
  66 /*64*/  xfs_qcnt_t      d_rtbcount;     /* realtime blocks owned */
  67 /*32*/  __int32_t       d_rtbtimer;     /* similar to above; for RT disk blocks */
  68 /*16*/  xfs_qwarncnt_t  d_rtbwarns;     /* warnings issued wrt RT disk blocks */
  69 /*16*/  __uint16_t      d_pad;
  70 } xfs_disk_dquot_t;
  71
  72 /*
  73  * This is what goes on disk. This is separated from the xfs_disk_dquot because
  74  * carrying the unnecessary padding would be a waste of memory.
  75  */
  76 typedef struct xfs_dqblk {
  77         xfs_disk_dquot_t  dd_diskdq;    /* portion that lives incore as well */
  78         char              dd_fill[32];  /* filling for posterity */
  79 } xfs_dqblk_t;
  80
  81 /*
  82  * flags for q_flags field in the dquot.
  83  */
  84 #define XFS_DQ_USER             0x0001          /* a user quota */
  85 /* #define XFS_DQ_PROJ          0x0002          -- project quota (IRIX) */
  86 #define XFS_DQ_GROUP            0x0004          /* a group quota */
  87 #define XFS_DQ_FLOCKED          0x0008          /* flush lock taken */
  88 #define XFS_DQ_DIRTY            0x0010          /* dquot is dirty */
  89 #define XFS_DQ_WANT             0x0020          /* for lookup/reclaim race */
  90 #define XFS_DQ_INACTIVE         0x0040          /* dq off mplist & hashlist */
  91 #define XFS_DQ_MARKER           0x0080          /* sentinel */
  92
  93 /*
  94  * In the worst case, when both user and group quotas are on,
  95  * we can have a max of three dquots changing in a single transaction.
  96  */
  97 #define XFS_DQUOT_LOGRES(mp)    (sizeof(xfs_disk_dquot_t) * 3)
  98
  99 #endif  /* __XFS_DQBLK_H__ */