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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | /* |
| 2 | * Definitions of structures for vfsv0 quota format |
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| 3 | */ |
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| 4 | |||
| 5 | #ifndef _LINUX_QUOTAIO_V2_H |
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| 6 | #define _LINUX_QUOTAIO_V2_H |
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| 7 | |||
| 8 | #include <linux/types.h> |
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| 9 | #include <linux/quota.h> |
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| 10 | |||
| 11 | /* |
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| 12 | * Definitions of magics and versions of current quota files |
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| 13 | */ |
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| 14 | #define V2_INITQMAGICS {\ |
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| 15 | 0xd9c01f11, /* USRQUOTA */\ |
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| 16 | 0xd9c01927 /* GRPQUOTA */\ |
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| 17 | } |
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| 18 | |||
| 19 | #define V2_INITQVERSIONS {\ |
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| 20 | 0, /* USRQUOTA */\ |
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| 21 | |||
| 22 | } |
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| 23 | |||
| 24 | /* |
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| 25 | * The following structure defines the format of the disk quota file |
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| 26 | * (as it appears on disk) - the file is a radix tree whose leaves point |
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| 27 | * to blocks of these structures. |
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| 28 | */ |
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| 29 | struct v2_disk_dqblk { |
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| 30 | __u32 dqb_id; /* id this quota applies to */ |
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| 31 | __u32 dqb_ihardlimit; /* absolute limit on allocated inodes */ |
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| 32 | __u32 dqb_isoftlimit; /* preferred inode limit */ |
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| 33 | __u32 dqb_curinodes; /* current # allocated inodes */ |
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| 34 | __u32 dqb_bhardlimit; /* absolute limit on disk space (in QUOTABLOCK_SIZE) */ |
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| 35 | __u32 dqb_bsoftlimit; /* preferred limit on disk space (in QUOTABLOCK_SIZE) */ |
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| 36 | __u64 dqb_curspace; /* current space occupied (in bytes) */ |
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| 37 | __u64 dqb_btime; /* time limit for excessive disk use */ |
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| 38 | __u64 dqb_itime; /* time limit for excessive inode use */ |
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| 39 | }; |
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| 40 | |||
| 41 | /* |
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| 42 | * Here are header structures as written on disk and their in-memory copies |
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| 43 | */ |
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| 44 | /* First generic header */ |
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| 45 | struct v2_disk_dqheader { |
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| 46 | __u32 dqh_magic; /* Magic number identifying file */ |
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| 47 | __u32 dqh_version; /* File version */ |
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| 48 | }; |
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| 49 | |||
| 50 | /* Header with type and version specific information */ |
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| 51 | struct v2_disk_dqinfo { |
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| 52 | __u32 dqi_bgrace; /* Time before block soft limit becomes hard limit */ |
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| 53 | __u32 dqi_igrace; /* Time before inode soft limit becomes hard limit */ |
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| 54 | __u32 dqi_flags; /* Flags for quotafile (DQF_*) */ |
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| 55 | __u32 dqi_blocks; /* Number of blocks in file */ |
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| 56 | __u32 dqi_free_blk; /* Number of first free block in the list */ |
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| 57 | __u32 dqi_free_entry; /* Number of block with at least one free entry */ |
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| 58 | }; |
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| 59 | |||
| 60 | /* |
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| 61 | * Structure of header of block with quota structures. It is padded to 16 bytes so |
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| 62 | * there will be space for exactly 18 quota-entries in a block |
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| 63 | */ |
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| 64 | struct v2_disk_dqdbheader { |
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| 65 | __u32 dqdh_next_free; /* Number of next block with free entry */ |
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| 66 | __u32 dqdh_prev_free; /* Number of previous block with free entry */ |
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| 67 | __u16 dqdh_entries; /* Number of valid entries in block */ |
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| 68 | __u16 dqdh_pad1; |
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| 69 | __u32 dqdh_pad2; |
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| 70 | }; |
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| 71 | |||
| 72 | #define V2_DQINFOOFF sizeof(struct v2_disk_dqheader) /* Offset of info header in file */ |
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| 73 | #define V2_DQBLKSIZE_BITS 10 |
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| 74 | #define V2_DQBLKSIZE (1 << V2_DQBLKSIZE_BITS) /* Size of block with quota structures */ |
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| 75 | #define V2_DQTREEOFF 1 /* Offset of tree in file in blocks */ |
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| 76 | #define V2_DQTREEDEPTH 4 /* Depth of quota tree */ |
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| 77 | #define V2_DQSTRINBLK ((V2_DQBLKSIZE - sizeof(struct v2_disk_dqdbheader)) / sizeof(struct v2_disk_dqblk)) /* Number of entries in one blocks */ |
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| 78 | |||
| 79 | #endif /* _LINUX_QUOTAIO_V2_H */ |