LXR linux/fs/quota/quotaio

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 *      Definitions of structures for vfsv0 quota format
   4 */
   5
   6#ifndef _LINUX_QUOTAIO_V2_H
   7#define _LINUX_QUOTAIO_V2_H
   8
   9#include <linux/types.h>
  10#include <linux/quota.h>
  11
  12/*
  13 * Definitions of magics and versions of current quota files
  14 */
  15#define V2_INITQMAGICS {\
  16        0xd9c01f11,     /* USRQUOTA */\
  17        0xd9c01927,     /* GRPQUOTA */\
  18        0xd9c03f14,     /* PRJQUOTA */\
  19}
  20
  21#define V2_INITQVERSIONS {\
  22        1,              /* USRQUOTA */\
  23        1,              /* GRPQUOTA */\
  24        1,              /* PRJQUOTA */\
  25}
  26
  27/* First generic header */
  28struct v2_disk_dqheader {
  29        __le32 dqh_magic;       /* Magic number identifying file */
  30        __le32 dqh_version;     /* File version */
  31};
  32
  33/*
  34 * The following structure defines the format of the disk quota file
  35 * (as it appears on disk) - the file is a radix tree whose leaves point
  36 * to blocks of these structures.
  37 */
  38struct v2r0_disk_dqblk {
  39        __le32 dqb_id;          /* id this quota applies to */
  40        __le32 dqb_ihardlimit;  /* absolute limit on allocated inodes */
  41        __le32 dqb_isoftlimit;  /* preferred inode limit */
  42        __le32 dqb_curinodes;   /* current # allocated inodes */
  43        __le32 dqb_bhardlimit;  /* absolute limit on disk space (in QUOTABLOCK_SIZE) */
  44        __le32 dqb_bsoftlimit;  /* preferred limit on disk space (in QUOTABLOCK_SIZE) */
  45        __le64 dqb_curspace;    /* current space occupied (in bytes) */
  46        __le64 dqb_btime;       /* time limit for excessive disk use */
  47        __le64 dqb_itime;       /* time limit for excessive inode use */
  48};
  49
  50struct v2r1_disk_dqblk {
  51        __le32 dqb_id;          /* id this quota applies to */
  52        __le32 dqb_pad;
  53        __le64 dqb_ihardlimit;  /* absolute limit on allocated inodes */
  54        __le64 dqb_isoftlimit;  /* preferred inode limit */
  55        __le64 dqb_curinodes;   /* current # allocated inodes */
  56        __le64 dqb_bhardlimit;  /* absolute limit on disk space (in QUOTABLOCK_SIZE) */
  57        __le64 dqb_bsoftlimit;  /* preferred limit on disk space (in QUOTABLOCK_SIZE) */
  58        __le64 dqb_curspace;    /* current space occupied (in bytes) */
  59        __le64 dqb_btime;       /* time limit for excessive disk use */
  60        __le64 dqb_itime;       /* time limit for excessive inode use */
  61};
  62
  63/* Header with type and version specific information */
  64struct v2_disk_dqinfo {
  65        __le32 dqi_bgrace;      /* Time before block soft limit becomes hard limit */
  66        __le32 dqi_igrace;      /* Time before inode soft limit becomes hard limit */
  67        __le32 dqi_flags;       /* Flags for quotafile (DQF_*) */
  68        __le32 dqi_blocks;      /* Number of blocks in file */
  69        __le32 dqi_free_blk;    /* Number of first free block in the list */
  70        __le32 dqi_free_entry;  /* Number of block with at least one free entry */
  71};
  72
  73#define V2_DQINFOOFF    sizeof(struct v2_disk_dqheader) /* Offset of info header in file */
  74#define V2_DQBLKSIZE_BITS 10                            /* Size of leaf block in tree */
  75
  76#endif /* _LINUX_QUOTAIO_V2_H */
  77