1#ifndef _OMFS_FS_H
 2#define _OMFS_FS_H
 3
 4/* OMFS On-disk structures */
 5
 6#define OMFS_MAGIC 0xC2993D87
 7#define OMFS_IMAGIC 0xD2
 8
 9#define OMFS_DIR 'D'
10#define OMFS_FILE 'F'
11#define OMFS_INODE_NORMAL 'e'
12#define OMFS_INODE_CONTINUATION 'c'
13#define OMFS_INODE_SYSTEM 's'
14#define OMFS_NAMELEN 256
15#define OMFS_DIR_START 0x1b8
16#define OMFS_EXTENT_START 0x1d0
17#define OMFS_EXTENT_CONT 0x40
18#define OMFS_XOR_COUNT 19
19#define OMFS_MAX_BLOCK_SIZE 8192
20#define OMFS_MAX_CLUSTER_SIZE 8
21
22struct omfs_super_block {
23	char s_fill1[256];
24	__be64 s_root_block;		/* block number of omfs_root_block */
25	__be64 s_num_blocks;		/* total number of FS blocks */
26	__be32 s_magic;			/* OMFS_MAGIC */
27	__be32 s_blocksize;		/* size of a block */
28	__be32 s_mirrors;		/* # of mirrors of system blocks */
29	__be32 s_sys_blocksize;		/* size of non-data blocks */
30};
31
32struct omfs_header {
33	__be64 h_self;			/* FS block where this is located */
34	__be32 h_body_size;		/* size of useful data after header */
35	__be16 h_crc;			/* crc-ccitt of body_size bytes */
36	char h_fill1[2];
37	u8 h_version;			/* version, always 1 */
38	char h_type;			/* OMFS_INODE_X */
39	u8 h_magic;			/* OMFS_IMAGIC */
40	u8 h_check_xor;			/* XOR of header bytes before this */
41	__be32 h_fill2;
42};
43
44struct omfs_root_block {
45	struct omfs_header r_head;	/* header */
46	__be64 r_fill1;
47	__be64 r_num_blocks;		/* total number of FS blocks */
48	__be64 r_root_dir;		/* block # of root directory */
49	__be64 r_bitmap;		/* block # of free space bitmap */
50	__be32 r_blocksize;		/* size of a block */
51	__be32 r_clustersize;		/* size allocated for data blocks */
52	__be64 r_mirrors;		/* # of mirrors of system blocks */
53	char r_name[OMFS_NAMELEN];	/* partition label */
54};
55
56struct omfs_inode {
57	struct omfs_header i_head;	/* header */
58	__be64 i_parent;		/* parent containing this inode */
59	__be64 i_sibling;		/* next inode in hash bucket */
60	__be64 i_ctime;			/* ctime, in milliseconds */
61	char i_fill1[35];
62	char i_type;			/* OMFS_[DIR,FILE] */
63	__be32 i_fill2;
64	char i_fill3[64];
65	char i_name[OMFS_NAMELEN];	/* filename */
66	__be64 i_size;			/* size of file, in bytes */
67};
68
69struct omfs_extent_entry {
70	__be64 e_cluster;		/* start location of a set of blocks */
71	__be64 e_blocks;		/* number of blocks after e_cluster */
72};
73
74struct omfs_extent {
75	__be64 e_next;			/* next extent table location */
76	__be32 e_extent_count;		/* total # extents in this table */
77	__be32 e_fill;
78	struct omfs_extent_entry e_entry;	/* start of extent entries */
79};
80
81#endif

 1#ifndef _OMFS_FS_H
 2#define _OMFS_FS_H
 3
 4/* OMFS On-disk structures */
 5
 6#define OMFS_MAGIC 0xC2993D87
 7#define OMFS_IMAGIC 0xD2
 8
 9#define OMFS_DIR 'D'
10#define OMFS_FILE 'F'
11#define OMFS_INODE_NORMAL 'e'
12#define OMFS_INODE_CONTINUATION 'c'
13#define OMFS_INODE_SYSTEM 's'
14#define OMFS_NAMELEN 256
15#define OMFS_DIR_START 0x1b8
16#define OMFS_EXTENT_START 0x1d0
17#define OMFS_EXTENT_CONT 0x40
18#define OMFS_XOR_COUNT 19
19#define OMFS_MAX_BLOCK_SIZE 8192
20#define OMFS_MAX_CLUSTER_SIZE 8
21
22struct omfs_super_block {
23	char s_fill1[256];
24	__be64 s_root_block;		/* block number of omfs_root_block */
25	__be64 s_num_blocks;		/* total number of FS blocks */
26	__be32 s_magic;			/* OMFS_MAGIC */
27	__be32 s_blocksize;		/* size of a block */
28	__be32 s_mirrors;		/* # of mirrors of system blocks */
29	__be32 s_sys_blocksize;		/* size of non-data blocks */
30};
31
32struct omfs_header {
33	__be64 h_self;			/* FS block where this is located */
34	__be32 h_body_size;		/* size of useful data after header */
35	__be16 h_crc;			/* crc-ccitt of body_size bytes */
36	char h_fill1[2];
37	u8 h_version;			/* version, always 1 */
38	char h_type;			/* OMFS_INODE_X */
39	u8 h_magic;			/* OMFS_IMAGIC */
40	u8 h_check_xor;			/* XOR of header bytes before this */
41	__be32 h_fill2;
42};
43
44struct omfs_root_block {
45	struct omfs_header r_head;	/* header */
46	__be64 r_fill1;
47	__be64 r_num_blocks;		/* total number of FS blocks */
48	__be64 r_root_dir;		/* block # of root directory */
49	__be64 r_bitmap;		/* block # of free space bitmap */
50	__be32 r_blocksize;		/* size of a block */
51	__be32 r_clustersize;		/* size allocated for data blocks */
52	__be64 r_mirrors;		/* # of mirrors of system blocks */
53	char r_name[OMFS_NAMELEN];	/* partition label */
54};
55
56struct omfs_inode {
57	struct omfs_header i_head;	/* header */
58	__be64 i_parent;		/* parent containing this inode */
59	__be64 i_sibling;		/* next inode in hash bucket */
60	__be64 i_ctime;			/* ctime, in milliseconds */
61	char i_fill1[35];
62	char i_type;			/* OMFS_[DIR,FILE] */
63	__be32 i_fill2;
64	char i_fill3[64];
65	char i_name[OMFS_NAMELEN];	/* filename */
66	__be64 i_size;			/* size of file, in bytes */
67};
68
69struct omfs_extent_entry {
70	__be64 e_cluster;		/* start location of a set of blocks */
71	__be64 e_blocks;		/* number of blocks after e_cluster */
72};
73
74struct omfs_extent {
75	__be64 e_next;			/* next extent table location */
76	__be32 e_extent_count;		/* total # extents in this table */
77	__be32 e_fill;
78	struct omfs_extent_entry e_entry;	/* start of extent entries */
79};
80
81#endif