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Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
[mirror_ubuntu-zesty-kernel.git] / fs / befs / befs.h
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1da177e4
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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
17typedef u64 befs_blocknr_t;
18/*
19 * BeFS in memory structures
20 */
21
09ad0eae 22struct befs_mount_options {
31aba059
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23 kgid_t gid;
24 kuid_t uid;
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25 int use_gid;
26 int use_uid;
27 int debug;
28 char *iocharset;
09ad0eae 29};
1da177e4 30
038428fc 31struct befs_sb_info {
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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 58
f8ccad21 59struct befs_inode_info {
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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;
f8ccad21 73};
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74
75enum befs_err {
76 BEFS_OK,
77 BEFS_ERR,
78 BEFS_BAD_INODE,
79 BEFS_BT_END,
80 BEFS_BT_EMPTY,
81 BEFS_BT_MATCH,
82 BEFS_BT_PARMATCH,
83 BEFS_BT_NOT_FOUND
84};
85
86
87/****************************/
88/* debug.c */
dac52fc1 89__printf(2, 3)
1da177e4 90void befs_error(const struct super_block *sb, const char *fmt, ...);
dac52fc1 91__printf(2, 3)
1da177e4 92void befs_warning(const struct super_block *sb, const char *fmt, ...);
dac52fc1 93__printf(2, 3)
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94void befs_debug(const struct super_block *sb, const char *fmt, ...);
95
96void befs_dump_super_block(const struct super_block *sb, befs_super_block *);
97void befs_dump_inode(const struct super_block *sb, befs_inode *);
a9721f31 98void befs_dump_index_entry(const struct super_block *sb, befs_disk_btree_super *);
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99void befs_dump_index_node(const struct super_block *sb, befs_btree_nodehead *);
100/****************************/
101
102
103/* Gets a pointer to the private portion of the super_block
104 * structure from the public part
105 */
038428fc 106static inline struct befs_sb_info *
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107BEFS_SB(const struct super_block *super)
108{
038428fc 109 return (struct befs_sb_info *) super->s_fs_info;
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110}
111
f8ccad21 112static inline struct befs_inode_info *
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113BEFS_I(const struct inode *inode)
114{
db6172c4 115 return container_of(inode, struct befs_inode_info, vfs_inode);
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116}
117
118static inline befs_blocknr_t
22341d8f 119iaddr2blockno(struct super_block *sb, const befs_inode_addr *iaddr)
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120{
121 return ((iaddr->allocation_group << BEFS_SB(sb)->ag_shift) +
122 iaddr->start);
123}
124
125static inline befs_inode_addr
126blockno2iaddr(struct super_block *sb, befs_blocknr_t blockno)
127{
128 befs_inode_addr iaddr;
129 iaddr.allocation_group = blockno >> BEFS_SB(sb)->ag_shift;
130 iaddr.start =
131 blockno - (iaddr.allocation_group << BEFS_SB(sb)->ag_shift);
132 iaddr.len = 1;
133
134 return iaddr;
135}
136
137static inline unsigned int
138befs_iaddrs_per_block(struct super_block *sb)
139{
a9721f31 140 return BEFS_SB(sb)->block_size / sizeof (befs_disk_inode_addr);
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141}
142
143static inline int
22341d8f 144befs_iaddr_is_empty(const befs_inode_addr *iaddr)
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145{
146 return (!iaddr->allocation_group) && (!iaddr->start) && (!iaddr->len);
147}
148
149static inline size_t
150befs_brun_size(struct super_block *sb, befs_block_run run)
151{
152 return BEFS_SB(sb)->block_size * run.len;
153}
154
af10b008
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155#include "endian.h"
156
1da177e4 157#endif /* _LINUX_BEFS_H */