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
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/*
* befs.h
*
* Copyright (C) 2001-2002 Will Dyson <will_dyson@pobox.com>
* Copyright (C) 1999 Makoto Kato (m_kato@ga2.so-net.ne.jp)
*/
#ifndef _LINUX_BEFS_H
#define _LINUX_BEFS_H
#include "befs_fs_types.h"
/* used in debug.c */
#define BEFS_VERSION "0.9.3"
typedef u64 befs_blocknr_t;
/*
* BeFS in memory structures
*/
typedef struct befs_mount_options {
kgid_t gid;
kuid_t uid;
int use_gid;
int use_uid;
int debug;
char *iocharset;
} befs_mount_options;
typedef struct befs_sb_info {
u32 magic1;
u32 block_size;
u32 block_shift;
int byte_order;
befs_off_t num_blocks;
befs_off_t used_blocks;
u32 inode_size;
u32 magic2;
/* Allocation group information */
u32 blocks_per_ag;
u32 ag_shift;
u32 num_ags;
/* jornal log entry */
befs_block_run log_blocks;
befs_off_t log_start;
befs_off_t log_end;
befs_inode_addr root_dir;
befs_inode_addr indices;
u32 magic3;
befs_mount_options mount_opts;
struct nls_table *nls;
} befs_sb_info;
typedef struct befs_inode_info {
u32 i_flags;
u32 i_type;
befs_inode_addr i_inode_num;
befs_inode_addr i_parent;
befs_inode_addr i_attribute;
union {
befs_data_stream ds;
char symlink[BEFS_SYMLINK_LEN];
} i_data;
struct inode vfs_inode;
} befs_inode_info;
enum befs_err {
BEFS_OK,
BEFS_ERR,
BEFS_BAD_INODE,
BEFS_BT_END,
BEFS_BT_EMPTY,
BEFS_BT_MATCH,
BEFS_BT_PARMATCH,
BEFS_BT_NOT_FOUND
};
/****************************/
/* debug.c */
__printf(2, 3)
void befs_error(const struct super_block *sb, const char *fmt, ...);
__printf(2, 3)
void befs_warning(const struct super_block *sb, const char *fmt, ...);
__printf(2, 3)
void befs_debug(const struct super_block *sb, const char *fmt, ...);
void befs_dump_super_block(const struct super_block *sb, befs_super_block *);
void befs_dump_inode(const struct super_block *sb, befs_inode *);
void befs_dump_index_entry(const struct super_block *sb, befs_disk_btree_super *);
void befs_dump_index_node(const struct super_block *sb, befs_btree_nodehead *);
/****************************/
/* Gets a pointer to the private portion of the super_block
* structure from the public part
*/
static inline befs_sb_info *
BEFS_SB(const struct super_block *super)
{
return (befs_sb_info *) super->s_fs_info;
}
static inline befs_inode_info *
BEFS_I(const struct inode *inode)
{
return list_entry(inode, struct befs_inode_info, vfs_inode);
}
static inline befs_blocknr_t
iaddr2blockno(struct super_block *sb, befs_inode_addr * iaddr)
{
return ((iaddr->allocation_group << BEFS_SB(sb)->ag_shift) +
iaddr->start);
}
static inline befs_inode_addr
blockno2iaddr(struct super_block *sb, befs_blocknr_t blockno)
{
befs_inode_addr iaddr;
iaddr.allocation_group = blockno >> BEFS_SB(sb)->ag_shift;
iaddr.start =
blockno - (iaddr.allocation_group << BEFS_SB(sb)->ag_shift);
iaddr.len = 1;
return iaddr;
}
static inline unsigned int
befs_iaddrs_per_block(struct super_block *sb)
{
return BEFS_SB(sb)->block_size / sizeof (befs_disk_inode_addr);
}
static inline int
befs_iaddr_is_empty(befs_inode_addr * iaddr)
{
return (!iaddr->allocation_group) && (!iaddr->start) && (!iaddr->len);
}
static inline size_t
befs_brun_size(struct super_block *sb, befs_block_run run)
{
return BEFS_SB(sb)->block_size * run.len;
}
#include "endian.h"
#endif /* _LINUX_BEFS_H */
|
