blob: 013c7aaf69a6f896aa586008d15ef021e899ae99 (
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
|
/*
* efs_vh.h
*
* Copyright (c) 1999 Al Smith
*
* Portions derived from IRIX header files (c) 1985 MIPS Computer Systems, Inc.
*/
#ifndef __EFS_VH_H__
#define __EFS_VH_H__
#define VHMAGIC 0xbe5a941 /* volume header magic number */
#define NPARTAB 16 /* 16 unix partitions */
#define NVDIR 15 /* max of 15 directory entries */
#define BFNAMESIZE 16 /* max 16 chars in boot file name */
#define VDNAMESIZE 8
struct volume_directory {
char vd_name[VDNAMESIZE]; /* name */
int vd_lbn; /* logical block number */
int vd_nbytes; /* file length in bytes */
};
struct partition_table { /* one per logical partition */
int pt_nblks; /* # of logical blks in partition */
int pt_firstlbn; /* first lbn of partition */
int pt_type; /* use of partition */
};
struct volume_header {
int vh_magic; /* identifies volume header */
short vh_rootpt; /* root partition number */
short vh_swappt; /* swap partition number */
char vh_bootfile[BFNAMESIZE]; /* name of file to boot */
char pad[48]; /* space for device params */
struct volume_directory vh_vd[NVDIR]; /* other vol hdr contents */
struct partition_table vh_pt[NPARTAB]; /* device partition layout */
int vh_csum; /* volume header checksum */
int vh_fill; /* fill out to 512 bytes */
};
#endif /* __EFS_VH_H__ */
|
