LCOV - code coverage report
Current view: top level - include/linux - dqblk_xfs.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 4 4 100.0 %
Date: 2017-01-25 Functions: 0 0 -

          Line data    Source code
       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             : 
      42             : /*
      43             :  * fs_disk_quota structure:
      44             :  *
      45             :  * This contains the current quota information regarding a user/proj/group.
      46             :  * It is 64-bit aligned, and all the blk units are in BBs (Basic Blocks) of
      47             :  * 512 bytes.
      48             :  */
      49             : #define FS_DQUOT_VERSION        1       /* fs_disk_quota.d_version */
      50             : typedef struct fs_disk_quota {
      51             :         __s8            d_version;      /* version of this structure */
      52             :         __s8            d_flags;        /* XFS_{USER,PROJ,GROUP}_QUOTA */
      53             :         __u16           d_fieldmask;    /* field specifier */
      54             :         __u32           d_id;           /* user, project, or group ID */
      55             :         __u64           d_blk_hardlimit;/* absolute limit on disk blks */
      56             :         __u64           d_blk_softlimit;/* preferred limit on disk blks */
      57             :         __u64           d_ino_hardlimit;/* maximum # allocated inodes */
      58             :         __u64           d_ino_softlimit;/* preferred inode limit */
      59             :         __u64           d_bcount;       /* # disk blocks owned by the user */
      60             :         __u64           d_icount;       /* # inodes owned by the user */
      61             :         __s32           d_itimer;       /* zero if within inode limits */
      62             :                                         /* if not, we refuse service */
      63             :         __s32           d_btimer;       /* similar to above; for disk blocks */
      64             :         __u16           d_iwarns;       /* # warnings issued wrt num inodes */
      65             :         __u16           d_bwarns;       /* # warnings issued wrt disk blocks */
      66             :         __s32           d_padding2;     /* padding2 - for future use */
      67             :         __u64           d_rtb_hardlimit;/* absolute limit on realtime blks */
      68             :         __u64           d_rtb_softlimit;/* preferred limit on RT disk blks */
      69             :         __u64           d_rtbcount;     /* # realtime blocks owned */
      70             :         __s32           d_rtbtimer;     /* similar to above; for RT disk blks */
      71             :         __u16           d_rtbwarns;     /* # warnings issued wrt RT disk blks */
      72             :         __s16           d_padding3;     /* padding3 - for future use */ 
      73             :         char            d_padding4[8];  /* yet more padding */
      74             : } fs_disk_quota_t;
      75           1 : 
      76             : /*
      77             :  * These fields are sent to Q_XSETQLIM to specify fields that need to change.
      78             :  */
      79             : #define FS_DQ_ISOFT     (1<<0)
      80             : #define FS_DQ_IHARD     (1<<1)
      81             : #define FS_DQ_BSOFT     (1<<2)
      82             : #define FS_DQ_BHARD     (1<<3)
      83             : #define FS_DQ_RTBSOFT   (1<<4)
      84             : #define FS_DQ_RTBHARD   (1<<5)
      85             : #define FS_DQ_LIMIT_MASK        (FS_DQ_ISOFT | FS_DQ_IHARD | FS_DQ_BSOFT | \
      86             :                                  FS_DQ_BHARD | FS_DQ_RTBSOFT | FS_DQ_RTBHARD)
      87             : /*
      88             :  * These timers can only be set in super user's dquot. For others, timers are
      89             :  * automatically started and stopped. Superusers timer values set the limits
      90             :  * for the rest.  In case these values are zero, the DQ_{F,B}TIMELIMIT values
      91             :  * defined below are used. 
      92             :  * These values also apply only to the d_fieldmask field for Q_XSETQLIM.
      93             :  */
      94             : #define FS_DQ_BTIMER    (1<<6)
      95             : #define FS_DQ_ITIMER    (1<<7)
      96             : #define FS_DQ_RTBTIMER  (1<<8)
      97             : #define FS_DQ_TIMER_MASK        (FS_DQ_BTIMER | FS_DQ_ITIMER | FS_DQ_RTBTIMER)
      98             : 
      99             : /*
     100             :  * Warning counts are set in both super user's dquot and others. For others,
     101             :  * warnings are set/cleared by the administrators (or automatically by going
     102             :  * below the soft limit).  Superusers warning values set the warning limits
     103             :  * for the rest.  In case these values are zero, the DQ_{F,B}WARNLIMIT values
     104             :  * defined below are used. 
     105             :  * These values also apply only to the d_fieldmask field for Q_XSETQLIM.
     106             :  */
     107             : #define FS_DQ_BWARNS    (1<<9)
     108             : #define FS_DQ_IWARNS    (1<<10)
     109             : #define FS_DQ_RTBWARNS  (1<<11)
     110             : #define FS_DQ_WARNS_MASK        (FS_DQ_BWARNS | FS_DQ_IWARNS | FS_DQ_RTBWARNS)
     111             : 
     112             : /*
     113             :  * Various flags related to quotactl(2).  Only relevant to XFS filesystems.
     114             :  */
     115             : #define XFS_QUOTA_UDQ_ACCT      (1<<0)  /* user quota accounting */
     116             : #define XFS_QUOTA_UDQ_ENFD      (1<<1)  /* user quota limits enforcement */
     117             : #define XFS_QUOTA_GDQ_ACCT      (1<<2)  /* group quota accounting */
     118             : #define XFS_QUOTA_GDQ_ENFD      (1<<3)  /* group quota limits enforcement */
     119             : #define XFS_QUOTA_PDQ_ACCT      (1<<4)  /* project quota accounting */
     120             : #define XFS_QUOTA_PDQ_ENFD      (1<<5)  /* project quota limits enforcement */
     121             : 
     122             : #define XFS_USER_QUOTA          (1<<0)    /* user quota type */
     123             : #define XFS_PROJ_QUOTA          (1<<1)    /* project quota type */
     124             : #define XFS_GROUP_QUOTA         (1<<2)    /* group quota type */
     125             : 
     126             : /*
     127             :  * fs_quota_stat is the struct returned in Q_XGETQSTAT for a given file system.
     128             :  * Provides a centralized way to get meta information about the quota subsystem.
     129             :  * eg. space taken up for user and group quotas, number of dquots currently
     130             :  * incore.
     131             :  */
     132             : #define FS_QSTAT_VERSION        1       /* fs_quota_stat.qs_version */
     133             : 
     134             : /*
     135             :  * Some basic information about 'quota files'.
     136             :  */
     137             : typedef struct fs_qfilestat {
     138             :         __u64           qfs_ino;        /* inode number */
     139             :         __u64           qfs_nblks;      /* number of BBs 512-byte-blks */
     140             :         __u32           qfs_nextents;   /* number of extents */
     141           1 : } fs_qfilestat_t;
     142           1 : 
     143             : typedef struct fs_quota_stat {
     144             :         __s8            qs_version;     /* version number for future changes */
     145             :         __u16           qs_flags;       /* XFS_QUOTA_{U,P,G}DQ_{ACCT,ENFD} */
     146             :         __s8            qs_pad;         /* unused */
     147             :         fs_qfilestat_t  qs_uquota;      /* user quota storage information */
     148             :         fs_qfilestat_t  qs_gquota;      /* group quota storage information */
     149             :         __u32           qs_incoredqs;   /* number of dquots incore */
     150             :         __s32           qs_btimelimit;  /* limit for blks timer */      
     151             :         __s32           qs_itimelimit;  /* limit for inodes timer */    
     152             :         __s32           qs_rtbtimelimit;/* limit for rt blks timer */   
     153             :         __u16           qs_bwarnlimit;  /* limit for num warnings */
     154             :         __u16           qs_iwarnlimit;  /* limit for num warnings */
     155             : } fs_quota_stat_t;
     156           1 : 
     157             : #endif  /* _LINUX_DQBLK_XFS_H */

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