Root/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    1, /* USRQUOTA */\
21    1 /* GRPQUOTA */\
22}
23
24/* First generic header */
25struct 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 */
35struct v2r0_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
47struct v2r1_disk_dqblk {
48    __le32 dqb_id; /* id this quota applies to */
49    __le32 dqb_pad;
50    __le64 dqb_ihardlimit; /* absolute limit on allocated inodes */
51    __le64 dqb_isoftlimit; /* preferred inode limit */
52    __le64 dqb_curinodes; /* current # allocated inodes */
53    __le64 dqb_bhardlimit; /* absolute limit on disk space (in QUOTABLOCK_SIZE) */
54    __le64 dqb_bsoftlimit; /* preferred limit on disk space (in QUOTABLOCK_SIZE) */
55    __le64 dqb_curspace; /* current space occupied (in bytes) */
56    __le64 dqb_btime; /* time limit for excessive disk use */
57    __le64 dqb_itime; /* time limit for excessive inode use */
58};
59
60/* Header with type and version specific information */
61struct v2_disk_dqinfo {
62    __le32 dqi_bgrace; /* Time before block soft limit becomes hard limit */
63    __le32 dqi_igrace; /* Time before inode soft limit becomes hard limit */
64    __le32 dqi_flags; /* Flags for quotafile (DQF_*) */
65    __le32 dqi_blocks; /* Number of blocks in file */
66    __le32 dqi_free_blk; /* Number of first free block in the list */
67    __le32 dqi_free_entry; /* Number of block with at least one free entry */
68};
69
70#define V2_DQINFOOFF sizeof(struct v2_disk_dqheader) /* Offset of info header in file */
71#define V2_DQBLKSIZE_BITS 10 /* Size of leaf block in tree */
72
73#endif /* _LINUX_QUOTAIO_V2_H */
74

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