fs/quota/quotaio_v2.h

   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 */
  25 struct 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  */
  35 struct 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 */
  48 struct 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 */