1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * befs.h |
4 | * |
5 | * Copyright (C) 2001-2002 Will Dyson <will_dyson@pobox.com> |
6 | * Copyright (C) 1999 Makoto Kato (m_kato@ga2.so-net.ne.jp) |
7 | */ |
8 | |
9 | #ifndef _LINUX_BEFS_H |
10 | #define _LINUX_BEFS_H |
11 | |
12 | #include "befs_fs_types.h" |
13 | |
14 | /* used in debug.c */ |
15 | #define BEFS_VERSION "0.9.3" |
16 | |
17 | |
18 | typedef u64 befs_blocknr_t; |
19 | /* |
20 | * BeFS in memory structures |
21 | */ |
22 | |
23 | struct befs_mount_options { |
24 | kgid_t gid; |
25 | kuid_t uid; |
26 | int use_gid; |
27 | int use_uid; |
28 | int debug; |
29 | char *iocharset; |
30 | }; |
31 | |
32 | struct befs_sb_info { |
33 | u32 magic1; |
34 | u32 block_size; |
35 | u32 block_shift; |
36 | int byte_order; |
37 | befs_off_t num_blocks; |
38 | befs_off_t used_blocks; |
39 | u32 inode_size; |
40 | u32 magic2; |
41 | |
42 | /* Allocation group information */ |
43 | u32 blocks_per_ag; |
44 | u32 ag_shift; |
45 | u32 num_ags; |
46 | |
47 | /* State of the superblock */ |
48 | u32 flags; |
49 | |
50 | /* Journal log entry */ |
51 | befs_block_run log_blocks; |
52 | befs_off_t log_start; |
53 | befs_off_t log_end; |
54 | |
55 | befs_inode_addr root_dir; |
56 | befs_inode_addr indices; |
57 | u32 magic3; |
58 | |
59 | struct befs_mount_options mount_opts; |
60 | struct nls_table *nls; |
61 | }; |
62 | |
63 | struct befs_inode_info { |
64 | u32 i_flags; |
65 | u32 i_type; |
66 | |
67 | befs_inode_addr i_inode_num; |
68 | befs_inode_addr i_parent; |
69 | befs_inode_addr i_attribute; |
70 | |
71 | union { |
72 | befs_data_stream ds; |
73 | char symlink[BEFS_SYMLINK_LEN]; |
74 | } i_data; |
75 | |
76 | struct inode vfs_inode; |
77 | }; |
78 | |
79 | enum befs_err { |
80 | BEFS_OK, |
81 | BEFS_ERR, |
82 | BEFS_BAD_INODE, |
83 | BEFS_BT_END, |
84 | BEFS_BT_EMPTY, |
85 | BEFS_BT_MATCH, |
86 | BEFS_BT_OVERFLOW, |
87 | BEFS_BT_NOT_FOUND |
88 | }; |
89 | |
90 | |
91 | /****************************/ |
92 | /* debug.c */ |
93 | __printf(2, 3) |
94 | void befs_error(const struct super_block *sb, const char *fmt, ...); |
95 | __printf(2, 3) |
96 | void befs_warning(const struct super_block *sb, const char *fmt, ...); |
97 | __printf(2, 3) |
98 | void befs_debug(const struct super_block *sb, const char *fmt, ...); |
99 | |
100 | void befs_dump_super_block(const struct super_block *sb, befs_super_block *); |
101 | void befs_dump_inode(const struct super_block *sb, befs_inode *); |
102 | void befs_dump_index_entry(const struct super_block *sb, befs_disk_btree_super *); |
103 | void befs_dump_index_node(const struct super_block *sb, befs_btree_nodehead *); |
104 | /****************************/ |
105 | |
106 | |
107 | /* Gets a pointer to the private portion of the super_block |
108 | * structure from the public part |
109 | */ |
110 | static inline struct befs_sb_info * |
111 | BEFS_SB(const struct super_block *super) |
112 | { |
113 | return (struct befs_sb_info *) super->s_fs_info; |
114 | } |
115 | |
116 | static inline struct befs_inode_info * |
117 | BEFS_I(const struct inode *inode) |
118 | { |
119 | return container_of(inode, struct befs_inode_info, vfs_inode); |
120 | } |
121 | |
122 | static inline befs_blocknr_t |
123 | iaddr2blockno(struct super_block *sb, const befs_inode_addr *iaddr) |
124 | { |
125 | return ((iaddr->allocation_group << BEFS_SB(super: sb)->ag_shift) + |
126 | iaddr->start); |
127 | } |
128 | |
129 | static inline befs_inode_addr |
130 | blockno2iaddr(struct super_block *sb, befs_blocknr_t blockno) |
131 | { |
132 | befs_inode_addr iaddr; |
133 | |
134 | iaddr.allocation_group = blockno >> BEFS_SB(super: sb)->ag_shift; |
135 | iaddr.start = |
136 | blockno - (iaddr.allocation_group << BEFS_SB(super: sb)->ag_shift); |
137 | iaddr.len = 1; |
138 | |
139 | return iaddr; |
140 | } |
141 | |
142 | static inline unsigned int |
143 | befs_iaddrs_per_block(struct super_block *sb) |
144 | { |
145 | return BEFS_SB(super: sb)->block_size / sizeof(befs_disk_inode_addr); |
146 | } |
147 | |
148 | #include "endian.h" |
149 | |
150 | #endif /* _LINUX_BEFS_H */ |
151 | |