fs_disk_quota(2type)                                      fs_disk_quota(2type)

NAME
       fs_disk_quota - filesystem disk quota

LIBRARY
       Standard C library (libc)

SYNOPSIS
       #include <xfs/xqm.h>

       #define FS_DQUOT_VERSION  1  // fs_disk_quota.d_version

       #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

       struct fs_disk_quota {
            int8_t    d_version;
            int8_t    d_flags;
            uint16_t  d_fieldmask;
            uint32_t  d_id;
            uint64_t  d_blk_hardlimit;
            uint64_t  d_blk_softlimit;
            uint64_t  d_ino_hardlimit;
            uint64_t  d_ino_softlimit;
            uint64_t  d_bcount;
            uint64_t  d_icount;
            int32_t   d_itimer;
            int32_t   d_btimer;
            uint16_t  d_iwarns;
            uint16_t  d_bwarns;
            int32_t   d_padding2;
            uint64_t  d_rtb_hardlimit;
            uint64_t  d_rtb_softlimit;
            uint64_t  d_rtbcount;
            int32_t   d_rtbtimer;
            uint16_t  d_rtbwarns;
            int16_t   d_padding3;
            char      d_padding4[8];
       };

DESCRIPTION
       All the blk units are in BBs (Basic Blocks) of 512 bytes.

       .d_version
              Version of this structure.

       .d_flags
              XFS_{USER,PROJ,GROUP}_QUOTA

       .d_fieldmask
              Field specifier.

       .d_id  User, project, or group ID.

       .d_blk_hardlimit
              Absolute limit on disk blocks.

       .d_blk_softlimit
              Preferred limit on disk blocks.

       .d_ino_hardlimit
              Maximum # allocated inodes.

       .d_ino_softlimit
              Preferred inode limit.

       .d_bcount
              # disk blocks owned by the user.

       .d_icount
              # inodes owned by the user.

       .d_itimer
              Zero if within inode limits; if not, we refuse service.

       .d_btimer
              Similar to above; for disk blocks.

       .d_iwarns
              # warnings issued with respect to # of inodes.

       .d_bwarns
              # warnings issued with respect to disk blocks.

       .d_padding2
              Padding; reserved for future use.

       .d_rtb_hardlimit
              Absolute limit on realtime (RT) disk blocks.

       .d_rtb_softlimit
              Preferred limit on RT disk blocks.

       .d_rtbcount
              # realtime blocks owned.

       .d_rtbtimer
              Similar to above; for RT disk blocks.

       .d_rtbwarns
              # warnings issued with respect to RT disk blocks.

       .d_padding3
              Padding; reserved for future use.

       .d_padding4[8]
              Yet more padding.

STANDARDS
       Linux.

HISTORY
       Linux.

SEE ALSO
       Q_XGETQUOTA(2const), Q_XGETNEXTQUOTA(2const), Q_XSETQLIM(2const)

Linux man-pages 6.19              2026-06-05              fs_disk_quota(2type)