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/* * Definitions of structures for vfsv0 quota format */ #ifndef _LINUX_QUOTAIO_V2_H #define _LINUX_QUOTAIO_V2_H #include <linux/types.h> #include <linux/quota.h> /* * Definitions of magics and versions of current quota files */ #define V2_INITQMAGICS {\ 0xd9c01f11, /* USRQUOTA */\ 0xd9c01927 /* GRPQUOTA */\ } #define V2_INITQVERSIONS {\ 0, /* USRQUOTA */\ 0 /* GRPQUOTA */\ } /* * The following structure defines the format of the disk quota file * (as it appears on disk) - the file is a radix tree whose leaves point * to blocks of these structures. */ struct v2_disk_dqblk { __le32 dqb_id; /* id this quota applies to */ __le32 dqb_ihardlimit; /* absolute limit on allocated inodes */ __le32 dqb_isoftlimit; /* preferred inode limit */ __le32 dqb_curinodes; /* current # allocated inodes */ __le32 dqb_bhardlimit; /* absolute limit on disk space (in QUOTABLOCK_SIZE) */ __le32 dqb_bsoftlimit; /* preferred limit on disk space (in QUOTABLOCK_SIZE) */ __le64 dqb_curspace; /* current space occupied (in bytes) */ __le64 dqb_btime; /* time limit for excessive disk use */ __le64 dqb_itime; /* time limit for excessive inode use */ }; /* * Here are header structures as written on disk and their in-memory copies */ /* First generic header */ struct v2_disk_dqheader { __le32 dqh_magic; /* Magic number identifying file */ __le32 dqh_version; /* File version */ }; /* Header with type and version specific information */ struct v2_disk_dqinfo { __le32 dqi_bgrace; /* Time before block soft limit becomes hard limit */ __le32 dqi_igrace; /* Time before inode soft limit becomes hard limit */ __le32 dqi_flags; /* Flags for quotafile (DQF_*) */ __le32 dqi_blocks; /* Number of blocks in file */ __le32 dqi_free_blk; /* Number of first free block in the list */ __le32 dqi_free_entry; /* Number of block with at least one free entry */ }; /* * Structure of header of block with quota structures. It is padded to 16 bytes so * there will be space for exactly 21 quota-entries in a block */ struct v2_disk_dqdbheader { __le32 dqdh_next_free; /* Number of next block with free entry */ __le32 dqdh_prev_free; /* Number of previous block with free entry */ __le16 dqdh_entries; /* Number of valid entries in block */ __le16 dqdh_pad1; __le32 dqdh_pad2; }; #define V2_DQINFOOFF sizeof(struct v2_disk_dqheader) /* Offset of info header in file */ #define V2_DQBLKSIZE_BITS 10 #define V2_DQBLKSIZE (1 << V2_DQBLKSIZE_BITS) /* Size of block with quota structures */ #define V2_DQTREEOFF 1 /* Offset of tree in file in blocks */ #define V2_DQTREEDEPTH 4 /* Depth of quota tree */ #define V2_DQSTRINBLK ((V2_DQBLKSIZE - sizeof(struct v2_disk_dqdbheader)) / sizeof(struct v2_disk_dqblk)) /* Number of entries in one blocks */ #endif /* _LINUX_QUOTAIO_V2_H */