source/include/samba_xfs_quota.h

   1 #ifndef _SAMBA_LINUX_XFS_H_
   2 #define _SAMBA_LINUX_XFS_H_
   3
   4 #ifndef _QUOTAIO_LINUX_XFS
   5 #define _QUOTAIO_LINUX_XFS
   6
   7 /*
   8  * Copyright (c) 2000 Silicon Graphics, Inc.  All Rights Reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of version 2 of the GNU General Public License as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it would be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  17  *
  18  * Further, this software is distributed without any warranty that it is
  19  * free of the rightful claim of any third person regarding infringement
  20  * or the like.  Any license provided herein, whether implied or
  21  * otherwise, applies only to this software file.  Patent licenses, if
  22  * any, provided herein do not apply to combinations of this program with
  23  * other software, or any other product whatsoever.
  24  *
  25  * You should have received a copy of the GNU General Public License along
  26  * with this program; if not, write the Free Software Foundation, Inc., 59
  27  * Temple Place - Suite 330, Boston MA 02111-1307, USA.
  28  *
  29  * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
  30  * Mountain View, CA  94043, or:
  31  *
  32  * http://www.sgi.com
  33  *
  34  * For further information regarding this notice, see:
  35  *
  36  * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
  37  */
  38
  39 #include <linux/types.h>
  40
  41 #define XQM_CMD(cmd)    ( ('X'<<8)+(cmd) )
  42 #define IS_XQM_CMD(cmd) ( ((int)(cmd)>>8) == 'X' )
  43
  44 /*
  45  * Disk quota - quotactl(2) commands for XFS Quota Manager (XQM).
  46  */
  47 #define Q_XQUOTAON   XQM_CMD(0x1)       /* enable quota accounting/enforcement */
  48 #define Q_XQUOTAOFF  XQM_CMD(0x2)       /* disable quota accounting/enforcement */
  49 #define Q_XGETQUOTA  XQM_CMD(0x3)       /* get disk limits & usage */
  50 #define Q_XSETQLIM   XQM_CMD(0x4)       /* set disk limits only */
  51 #define Q_XGETQSTAT  XQM_CMD(0x5)       /* returns fs_quota_stat_t struct */
  52 #define Q_XQUOTARM   XQM_CMD(0x6)       /* free quota files' space */
  53
  54 /*
  55  * fs_disk_quota structure:
  56  *
  57  * This contains the current quota information regarding a user/proj/group.
  58  * It is 64-bit aligned, and all the blk units are in BBs (Basic Blocks) of
  59  * 512 bytes.
  60  */
  61 #define FS_DQUOT_VERSION        1       /* fs_disk_quota.d_version */
  62 typedef struct fs_disk_quota {
  63         u_int8_t d_version;             /* version of this structure */
  64         u_int8_t d_flags;               /* XFS_{USER,PROJ,GROUP}_QUOTA */
  65         u_int16_t d_fieldmask;  /* field specifier */
  66         u_int32_t d_id;         /* user, project, or group ID */
  67         u_int64_t d_blk_hardlimit;      /* absolute limit on disk blks */
  68         u_int64_t d_blk_softlimit;      /* preferred limit on disk blks */
  69         u_int64_t d_ino_hardlimit;      /* maximum # allocated inodes */
  70         u_int64_t d_ino_softlimit;      /* preferred inode limit */
  71         u_int64_t d_bcount;             /* # disk blocks owned by the user */
  72         u_int64_t d_icount;             /* # inodes owned by the user */
  73         int32_t d_itimer;               /* zero if within inode limits */
  74         /* if not, we refuse service */
  75         int32_t d_btimer;               /* similar to above; for disk blocks */
  76         u_int16_t d_iwarns;             /* # warnings issued wrt num inodes */
  77         u_int16_t d_bwarns;             /* # warnings issued wrt disk blocks */
  78         int32_t d_padding2;     /* padding2 - for future use */
  79         u_int64_t d_rtb_hardlimit;      /* absolute limit on realtime blks */
  80         u_int64_t d_rtb_softlimit;      /* preferred limit on RT disk blks */
  81         u_int64_t d_rtbcount;   /* # realtime blocks owned */
  82         int32_t d_rtbtimer;     /* similar to above; for RT disk blks */
  83         u_int16_t d_rtbwarns;   /* # warnings issued wrt RT disk blks */
  84         int16_t d_padding3;     /* padding3 - for future use */
  85         char d_padding4[8];     /* yet more padding */
  86 } fs_disk_quota_t;
  87
  88 /*
  89  * These fields are sent to Q_XSETQLIM to specify fields that need to change.
  90  */
  91 #define FS_DQ_ISOFT     (1<<0)
  92 #define FS_DQ_IHARD     (1<<1)
  93 #define FS_DQ_BSOFT     (1<<2)
  94 #define FS_DQ_BHARD     (1<<3)
  95 #define FS_DQ_RTBSOFT   (1<<4)
  96 #define FS_DQ_RTBHARD   (1<<5)
  97 #define FS_DQ_LIMIT_MASK        (FS_DQ_ISOFT | FS_DQ_IHARD | FS_DQ_BSOFT | \
  98                                  FS_DQ_BHARD | FS_DQ_RTBSOFT | FS_DQ_RTBHARD)
  99 /*
 100  * These timers can only be set in super user's dquot. For others, timers are
 101  * automatically started and stopped. Superusers timer values set the limits
 102  * for the rest.  In case these values are zero, the DQ_{F,B}TIMELIMIT values
 103  * defined below are used.
 104  * These values also apply only to the d_fieldmask field for Q_XSETQLIM.
 105  */
 106 #define FS_DQ_BTIMER    (1<<6)
 107 #define FS_DQ_ITIMER    (1<<7)
 108 #define FS_DQ_RTBTIMER  (1<<8)
 109 #define FS_DQ_TIMER_MASK        (FS_DQ_BTIMER | FS_DQ_ITIMER | FS_DQ_RTBTIMER)
 110
 111 /*
 112  * The following constants define the default amount of time given a user
 113  * before the soft limits are treated as hard limits (usually resulting
 114  * in an allocation failure).  These may be modified by the quotactl(2)
 115  * system call with the Q_XSETQLIM command.
 116  */
 117 #define DQ_FTIMELIMIT   (7 * 24*60*60)  /* 1 week */
 118 #define DQ_BTIMELIMIT   (7 * 24*60*60)  /* 1 week */
 119
 120 /*
 121  * Various flags related to quotactl(2).  Only relevant to XFS filesystems.
 122  */
 123 #define XFS_QUOTA_UDQ_ACCT      (1<<0)  /* user quota accounting */
 124 #define XFS_QUOTA_UDQ_ENFD      (1<<1)  /* user quota limits enforcement */
 125 #define XFS_QUOTA_GDQ_ACCT      (1<<2)  /* group quota accounting */
 126 #define XFS_QUOTA_GDQ_ENFD      (1<<3)  /* group quota limits enforcement */
 127
 128 #define XFS_USER_QUOTA          (1<<0)  /* user quota type */
 129 #define XFS_PROJ_QUOTA          (1<<1)  /* (IRIX) project quota type */
 130 #define XFS_GROUP_QUOTA         (1<<2)  /* group quota type */
 131
 132 /*
 133  * fs_quota_stat is the struct returned in Q_XGETQSTAT for a given file system.
 134  * Provides a centralized way to get meta infomation about the quota subsystem.
 135  * eg. space taken up for user and group quotas, number of dquots currently
 136  * incore.
 137  */
 138 #define FS_QSTAT_VERSION        1       /* fs_quota_stat.qs_version */
 139
 140 /*
 141  * Some basic infomation about 'quota files'.
 142  */
 143 typedef struct fs_qfilestat {
 144         u_int64_t qfs_ino;              /* inode number */
 145         u_int64_t qfs_nblks;    /* number of BBs 512-byte-blks */
 146         u_int32_t qfs_nextents; /* number of extents */
 147 } fs_qfilestat_t;
 148
 149 typedef struct fs_quota_stat {
 150         u_int8_t qs_version;    /* version number for future changes */
 151         u_int16_t qs_flags;             /* XFS_QUOTA_{U,P,G}DQ_{ACCT,ENFD} */
 152         u_int8_t qs_pad;                /* unused */
 153         fs_qfilestat_t qs_uquota;       /* user quota storage information */
 154         fs_qfilestat_t qs_gquota;       /* group quota storage information */
 155         u_int32_t qs_incoredqs; /* number of dquots incore */
 156         int32_t qs_btimelimit;  /* limit for blks timer */
 157         int32_t qs_itimelimit;  /* limit for inodes timer */
 158         int32_t qs_rtbtimelimit;        /* limit for rt blks timer */
 159         u_int16_t qs_bwarnlimit;        /* limit for num warnings */
 160         u_int16_t qs_iwarnlimit;        /* limit for num warnings */
 161 } fs_quota_stat_t;
 162
 163 #endif /* _QUOTAIO_LINUX_XFS */
 164
 165 #endif /* _SAMBA_LINUX_XFS_H_ */