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Diffstat (limited to 'fs/quotaio_v2.h')
-rw-r--r--fs/quotaio_v2.h33
1 files changed, 7 insertions, 26 deletions
diff --git a/fs/quotaio_v2.h b/fs/quotaio_v2.h
index 303d7cbe30d4..530fe580685c 100644
--- a/fs/quotaio_v2.h
+++ b/fs/quotaio_v2.h
@@ -21,6 +21,12 @@
21 0 /* GRPQUOTA */\ 21 0 /* GRPQUOTA */\
22} 22}
23 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
24/* 30/*
25 * The following structure defines the format of the disk quota file 31 * 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 32 * (as it appears on disk) - the file is a radix tree whose leaves point
@@ -38,15 +44,6 @@ struct v2_disk_dqblk {
38 __le64 dqb_itime; /* time limit for excessive inode use */ 44 __le64 dqb_itime; /* time limit for excessive inode use */
39}; 45};
40 46
41/*
42 * Here are header structures as written on disk and their in-memory copies
43 */
44/* First generic header */
45struct 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 */ 47/* Header with type and version specific information */
51struct v2_disk_dqinfo { 48struct v2_disk_dqinfo {
52 __le32 dqi_bgrace; /* Time before block soft limit becomes hard limit */ 49 __le32 dqi_bgrace; /* Time before block soft limit becomes hard limit */
@@ -57,23 +54,7 @@ struct v2_disk_dqinfo {
57 __le32 dqi_free_entry; /* Number of block with at least one free entry */ 54 __le32 dqi_free_entry; /* Number of block with at least one free entry */
58}; 55};
59 56
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 */
64struct 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 */ 57#define V2_DQINFOOFF sizeof(struct v2_disk_dqheader) /* Offset of info header in file */
73#define V2_DQBLKSIZE_BITS 10 58#define V2_DQBLKSIZE_BITS 10 /* Size of leaf block in tree */
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 59
79#endif /* _LINUX_QUOTAIO_V2_H */ 60#endif /* _LINUX_QUOTAIO_V2_H */