aboutsummaryrefslogtreecommitdiffstats
path: root/fs/quota/quotaio_v2.h
diff options
context:
space:
mode:
Diffstat (limited to 'fs/quota/quotaio_v2.h')
-rw-r--r--fs/quota/quotaio_v2.h60
1 files changed, 60 insertions, 0 deletions
diff --git a/fs/quota/quotaio_v2.h b/fs/quota/quotaio_v2.h
new file mode 100644
index 000000000000..530fe580685c
--- /dev/null
+++ b/fs/quota/quotaio_v2.h
@@ -0,0 +1,60 @@
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 */
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 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 */
48struct 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 */