blob: 453d706ca079db02f80d9684db16f91b8402d0b8 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
/*
* efs_fs_i.h
*
* Copyright (c) 1999 Al Smith
*
* Portions derived from IRIX header files (c) 1988 Silicon Graphics
*/
#ifndef __EFS_FS_I_H__
#define __EFS_FS_I_H__
typedef int32_t efs_block_t;
typedef uint32_t efs_ino_t;
#define EFS_DIRECTEXTENTS 12
/*
* layout of an extent, in memory and on disk. 8 bytes exactly.
*/
typedef union extent_u {
unsigned char raw[8];
struct extent_s {
unsigned int ex_magic:8; /* magic # (zero) */
unsigned int ex_bn:24; /* basic block */
unsigned int ex_length:8; /* numblocks in this extent */
unsigned int ex_offset:24; /* logical offset into file */
} cooked;
} efs_extent;
typedef struct edevs {
short odev;
short dev_filler; /* force ndev to start */
unsigned int ndev; /* on a 32-bit boundary */
} efs_devs;
/*
* extent based filesystem inode as it appears on disk. The efs inode
* is exactly 128 bytes long.
*/
struct efs_dinode {
u_short di_mode; /* mode and type of file */
short di_nlink; /* number of links to file */
u_short di_uid; /* owner's user id */
u_short di_gid; /* owner's group id */
int32_t di_size; /* number of bytes in file */
int32_t di_atime; /* time last accessed */
int32_t di_mtime; /* time last modified */
int32_t di_ctime; /* time created */
uint32_t di_gen; /* generation number */
short di_numextents; /* # of extents */
u_char di_version; /* version of inode */
u_char di_spare; /* spare - used by AFS */
union di_addr {
efs_extent di_extents[EFS_DIRECTEXTENTS];
efs_devs di_dev; /* device for IFCHR/IFBLK */
} di_u;
};
/* efs inode storage in memory */
struct efs_inode_info {
int numextents;
int lastextent;
efs_extent extents[EFS_DIRECTEXTENTS];
};
#endif /* __EFS_FS_I_H__ */
|
