LXR linux/fs/quota/quotaio

   1/*
   2 *      Definitions of structures for vfsv0 quota format
   3 */
   4
   5#ifndef _LINUX_QUOTAIO_V2_H
   6#define _LINUX_QUOTAIO_V2_H
   7
   8#include <linux/types.h>
   9#include <linux/quota.h>
  10
  11/*
  12 * Definitions of magics and versions of current quota files
  13 */
  14#define V2_INITQMAGICS {\
  15        0xd9c01f11,     /* USRQUOTA */\
  16        0xd9c01927      /* GRPQUOTA */\
  17}
  18
  19#define V2_INITQVERSIONS {\
  20        0,              /* USRQUOTA */\
  21        0               /* GRPQUOTA */\
  22}
  23
  24/* First generic header */
  25struct v2_disk_dqheader {
  26        __le32 dqh_magic;       /* Magic number identifying file */
  27        __le32 dqh_version;     /* File version */
  28};
  29
  30/*
  31 * The following structure defines the format of the disk quota file
  32 * (as it appears on disk) - the file is a radix tree whose leaves point
  33 * to blocks of these structures.
  34 */
  35struct v2_disk_dqblk {
  36        __le32 dqb_id;          /* id this quota applies to */
  37        __le32 dqb_ihardlimit;  /* absolute limit on allocated inodes */
  38        __le32 dqb_isoftlimit;  /* preferred inode limit */
  39        __le32 dqb_curinodes;   /* current # allocated inodes */
  40        __le32 dqb_bhardlimit;  /* absolute limit on disk space (in QUOTABLOCK_SIZE) */
  41        __le32 dqb_bsoftlimit;  /* preferred limit on disk space (in QUOTABLOCK_SIZE) */
  42        __le64 dqb_curspace;    /* current space occupied (in bytes) */
  43        __le64 dqb_btime;       /* time limit for excessive disk use */
  44        __le64 dqb_itime;       /* time limit for excessive inode use */
  45};
  46
  47/* Header with type and version specific information */
  48struct v2_disk_dqinfo {
  49        __le32 dqi_bgrace;      /* Time before block soft limit becomes hard limit */
  50        __le32 dqi_igrace;      /* Time before inode soft limit becomes hard limit */
  51        __le32 dqi_flags;       /* Flags for quotafile (DQF_*) */
  52        __le32 dqi_blocks;      /* Number of blocks in file */
  53        __le32 dqi_free_blk;    /* Number of first free block in the list */
  54        __le32 dqi_free_entry;  /* Number of block with at least one free entry */
  55};
  56
  57#define V2_DQINFOOFF    sizeof(struct v2_disk_dqheader) /* Offset of info header in file */
  58#define V2_DQBLKSIZE_BITS 10                            /* Size of leaf block in tree */
  59
  60#endif /* _LINUX_QUOTAIO_V2_H */
  61