Commit | Line | Data |
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1da177e4 LT |
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 | /* | |
25 | * The following structure defines the format of the disk quota file | |
26 | * (as it appears on disk) - the file is a radix tree whose leaves point | |
27 | * to blocks of these structures. | |
28 | */ | |
29 | struct v2_disk_dqblk { | |
30 | __le32 dqb_id; /* id this quota applies to */ | |
31 | __le32 dqb_ihardlimit; /* absolute limit on allocated inodes */ | |
32 | __le32 dqb_isoftlimit; /* preferred inode limit */ | |
33 | __le32 dqb_curinodes; /* current # allocated inodes */ | |
34 | __le32 dqb_bhardlimit; /* absolute limit on disk space (in QUOTABLOCK_SIZE) */ | |
35 | __le32 dqb_bsoftlimit; /* preferred limit on disk space (in QUOTABLOCK_SIZE) */ | |
36 | __le64 dqb_curspace; /* current space occupied (in bytes) */ | |
37 | __le64 dqb_btime; /* time limit for excessive disk use */ | |
38 | __le64 dqb_itime; /* time limit for excessive inode use */ | |
39 | }; | |
40 | ||
41 | /* | |
42 | * Here are header structures as written on disk and their in-memory copies | |
43 | */ | |
44 | /* First generic header */ | |
45 | struct v2_disk_dqheader { | |
46 | __le32 dqh_magic; /* Magic number identifying file */ | |
47 | __le32 dqh_version; /* File version */ | |
48 | }; | |
49 | ||
50 | /* Header with type and version specific information */ | |
51 | struct v2_disk_dqinfo { | |
52 | __le32 dqi_bgrace; /* Time before block soft limit becomes hard limit */ | |
53 | __le32 dqi_igrace; /* Time before inode soft limit becomes hard limit */ | |
54 | __le32 dqi_flags; /* Flags for quotafile (DQF_*) */ | |
55 | __le32 dqi_blocks; /* Number of blocks in file */ | |
56 | __le32 dqi_free_blk; /* Number of first free block in the list */ | |
57 | __le32 dqi_free_entry; /* Number of block with at least one free entry */ | |
58 | }; | |
59 | ||
60 | /* | |
61 | * Structure of header of block with quota structures. It is padded to 16 bytes so | |
62 | * there will be space for exactly 21 quota-entries in a block | |
63 | */ | |
64 | struct v2_disk_dqdbheader { | |
65 | __le32 dqdh_next_free; /* Number of next block with free entry */ | |
66 | __le32 dqdh_prev_free; /* Number of previous block with free entry */ | |
67 | __le16 dqdh_entries; /* Number of valid entries in block */ | |
68 | __le16 dqdh_pad1; | |
69 | __le32 dqdh_pad2; | |
70 | }; | |
71 | ||
72 | #define V2_DQINFOOFF sizeof(struct v2_disk_dqheader) /* Offset of info header in file */ | |
73 | #define V2_DQBLKSIZE_BITS 10 | |
74 | #define V2_DQBLKSIZE (1 << V2_DQBLKSIZE_BITS) /* Size of block with quota structures */ | |
75 | #define V2_DQTREEOFF 1 /* Offset of tree in file in blocks */ | |
76 | #define V2_DQTREEDEPTH 4 /* Depth of quota tree */ | |
77 | #define V2_DQSTRINBLK ((V2_DQBLKSIZE - sizeof(struct v2_disk_dqdbheader)) / sizeof(struct v2_disk_dqblk)) /* Number of entries in one blocks */ | |
78 | ||
79 | #endif /* _LINUX_QUOTAIO_V2_H */ |