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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * befs.h | |
3 | * | |
4 | * Copyright (C) 2001-2002 Will Dyson <will_dyson@pobox.com> | |
5 | * Copyright (C) 1999 Makoto Kato (m_kato@ga2.so-net.ne.jp) | |
6 | */ | |
7 | ||
8 | #ifndef _LINUX_BEFS_H | |
9 | #define _LINUX_BEFS_H | |
10 | ||
11 | #include "befs_fs_types.h" | |
12 | ||
13 | /* used in debug.c */ | |
14 | #define BEFS_VERSION "0.9.3" | |
15 | ||
16 | ||
17 | typedef u64 befs_blocknr_t; | |
18 | /* | |
19 | * BeFS in memory structures | |
20 | */ | |
21 | ||
09ad0eae | 22 | struct befs_mount_options { |
31aba059 EB |
23 | kgid_t gid; |
24 | kuid_t uid; | |
1da177e4 LT |
25 | int use_gid; |
26 | int use_uid; | |
27 | int debug; | |
28 | char *iocharset; | |
09ad0eae | 29 | }; |
1da177e4 | 30 | |
038428fc | 31 | struct befs_sb_info { |
1da177e4 LT |
32 | u32 magic1; |
33 | u32 block_size; | |
34 | u32 block_shift; | |
35 | int byte_order; | |
36 | befs_off_t num_blocks; | |
37 | befs_off_t used_blocks; | |
38 | u32 inode_size; | |
39 | u32 magic2; | |
40 | ||
41 | /* Allocation group information */ | |
42 | u32 blocks_per_ag; | |
43 | u32 ag_shift; | |
44 | u32 num_ags; | |
45 | ||
46 | /* jornal log entry */ | |
47 | befs_block_run log_blocks; | |
48 | befs_off_t log_start; | |
49 | befs_off_t log_end; | |
50 | ||
51 | befs_inode_addr root_dir; | |
52 | befs_inode_addr indices; | |
53 | u32 magic3; | |
54 | ||
09ad0eae | 55 | struct befs_mount_options mount_opts; |
1da177e4 | 56 | struct nls_table *nls; |
038428fc | 57 | }; |
1da177e4 LT |
58 | |
59 | typedef struct befs_inode_info { | |
60 | u32 i_flags; | |
61 | u32 i_type; | |
62 | ||
63 | befs_inode_addr i_inode_num; | |
64 | befs_inode_addr i_parent; | |
65 | befs_inode_addr i_attribute; | |
66 | ||
67 | union { | |
68 | befs_data_stream ds; | |
69 | char symlink[BEFS_SYMLINK_LEN]; | |
70 | } i_data; | |
71 | ||
72 | struct inode vfs_inode; | |
73 | ||
74 | } befs_inode_info; | |
75 | ||
76 | enum befs_err { | |
77 | BEFS_OK, | |
78 | BEFS_ERR, | |
79 | BEFS_BAD_INODE, | |
80 | BEFS_BT_END, | |
81 | BEFS_BT_EMPTY, | |
82 | BEFS_BT_MATCH, | |
83 | BEFS_BT_PARMATCH, | |
84 | BEFS_BT_NOT_FOUND | |
85 | }; | |
86 | ||
87 | ||
88 | /****************************/ | |
89 | /* debug.c */ | |
dac52fc1 | 90 | __printf(2, 3) |
1da177e4 | 91 | void befs_error(const struct super_block *sb, const char *fmt, ...); |
dac52fc1 | 92 | __printf(2, 3) |
1da177e4 | 93 | void befs_warning(const struct super_block *sb, const char *fmt, ...); |
dac52fc1 | 94 | __printf(2, 3) |
1da177e4 LT |
95 | void befs_debug(const struct super_block *sb, const char *fmt, ...); |
96 | ||
97 | void befs_dump_super_block(const struct super_block *sb, befs_super_block *); | |
98 | void befs_dump_inode(const struct super_block *sb, befs_inode *); | |
a9721f31 | 99 | void befs_dump_index_entry(const struct super_block *sb, befs_disk_btree_super *); |
1da177e4 LT |
100 | void befs_dump_index_node(const struct super_block *sb, befs_btree_nodehead *); |
101 | /****************************/ | |
102 | ||
103 | ||
104 | /* Gets a pointer to the private portion of the super_block | |
105 | * structure from the public part | |
106 | */ | |
038428fc | 107 | static inline struct befs_sb_info * |
1da177e4 LT |
108 | BEFS_SB(const struct super_block *super) |
109 | { | |
038428fc | 110 | return (struct befs_sb_info *) super->s_fs_info; |
1da177e4 LT |
111 | } |
112 | ||
113 | static inline befs_inode_info * | |
114 | BEFS_I(const struct inode *inode) | |
115 | { | |
116 | return list_entry(inode, struct befs_inode_info, vfs_inode); | |
117 | } | |
118 | ||
119 | static inline befs_blocknr_t | |
120 | iaddr2blockno(struct super_block *sb, befs_inode_addr * iaddr) | |
121 | { | |
122 | return ((iaddr->allocation_group << BEFS_SB(sb)->ag_shift) + | |
123 | iaddr->start); | |
124 | } | |
125 | ||
126 | static inline befs_inode_addr | |
127 | blockno2iaddr(struct super_block *sb, befs_blocknr_t blockno) | |
128 | { | |
129 | befs_inode_addr iaddr; | |
130 | iaddr.allocation_group = blockno >> BEFS_SB(sb)->ag_shift; | |
131 | iaddr.start = | |
132 | blockno - (iaddr.allocation_group << BEFS_SB(sb)->ag_shift); | |
133 | iaddr.len = 1; | |
134 | ||
135 | return iaddr; | |
136 | } | |
137 | ||
138 | static inline unsigned int | |
139 | befs_iaddrs_per_block(struct super_block *sb) | |
140 | { | |
a9721f31 | 141 | return BEFS_SB(sb)->block_size / sizeof (befs_disk_inode_addr); |
1da177e4 LT |
142 | } |
143 | ||
144 | static inline int | |
145 | befs_iaddr_is_empty(befs_inode_addr * iaddr) | |
146 | { | |
147 | return (!iaddr->allocation_group) && (!iaddr->start) && (!iaddr->len); | |
148 | } | |
149 | ||
150 | static inline size_t | |
151 | befs_brun_size(struct super_block *sb, befs_block_run run) | |
152 | { | |
153 | return BEFS_SB(sb)->block_size * run.len; | |
154 | } | |
155 | ||
af10b008 AV |
156 | #include "endian.h" |
157 | ||
1da177e4 | 158 | #endif /* _LINUX_BEFS_H */ |