diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/befs/befs.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'fs/befs/befs.h')
-rw-r--r-- | fs/befs/befs.h | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/fs/befs/befs.h b/fs/befs/befs.h new file mode 100644 index 000000000000..057a2c3d73b7 --- /dev/null +++ b/fs/befs/befs.h | |||
@@ -0,0 +1,154 @@ | |||
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 | |||
22 | typedef struct befs_mount_options { | ||
23 | gid_t gid; | ||
24 | uid_t uid; | ||
25 | int use_gid; | ||
26 | int use_uid; | ||
27 | int debug; | ||
28 | char *iocharset; | ||
29 | } befs_mount_options; | ||
30 | |||
31 | typedef struct befs_sb_info { | ||
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 | |||
55 | befs_mount_options mount_opts; | ||
56 | struct nls_table *nls; | ||
57 | |||
58 | } befs_sb_info; | ||
59 | |||
60 | typedef struct befs_inode_info { | ||
61 | u32 i_flags; | ||
62 | u32 i_type; | ||
63 | |||
64 | befs_inode_addr i_inode_num; | ||
65 | befs_inode_addr i_parent; | ||
66 | befs_inode_addr i_attribute; | ||
67 | |||
68 | union { | ||
69 | befs_data_stream ds; | ||
70 | char symlink[BEFS_SYMLINK_LEN]; | ||
71 | } i_data; | ||
72 | |||
73 | struct inode vfs_inode; | ||
74 | |||
75 | } befs_inode_info; | ||
76 | |||
77 | enum befs_err { | ||
78 | BEFS_OK, | ||
79 | BEFS_ERR, | ||
80 | BEFS_BAD_INODE, | ||
81 | BEFS_BT_END, | ||
82 | BEFS_BT_EMPTY, | ||
83 | BEFS_BT_MATCH, | ||
84 | BEFS_BT_PARMATCH, | ||
85 | BEFS_BT_NOT_FOUND | ||
86 | }; | ||
87 | |||
88 | |||
89 | /****************************/ | ||
90 | /* debug.c */ | ||
91 | void befs_error(const struct super_block *sb, const char *fmt, ...); | ||
92 | void befs_warning(const struct super_block *sb, const char *fmt, ...); | ||
93 | void befs_debug(const struct super_block *sb, const char *fmt, ...); | ||
94 | |||
95 | void befs_dump_super_block(const struct super_block *sb, befs_super_block *); | ||
96 | void befs_dump_inode(const struct super_block *sb, befs_inode *); | ||
97 | void befs_dump_index_entry(const struct super_block *sb, befs_btree_super *); | ||
98 | void befs_dump_index_node(const struct super_block *sb, befs_btree_nodehead *); | ||
99 | /****************************/ | ||
100 | |||
101 | |||
102 | /* Gets a pointer to the private portion of the super_block | ||
103 | * structure from the public part | ||
104 | */ | ||
105 | static inline befs_sb_info * | ||
106 | BEFS_SB(const struct super_block *super) | ||
107 | { | ||
108 | return (befs_sb_info *) super->s_fs_info; | ||
109 | } | ||
110 | |||
111 | static inline befs_inode_info * | ||
112 | BEFS_I(const struct inode *inode) | ||
113 | { | ||
114 | return list_entry(inode, struct befs_inode_info, vfs_inode); | ||
115 | } | ||
116 | |||
117 | static inline befs_blocknr_t | ||
118 | iaddr2blockno(struct super_block *sb, befs_inode_addr * iaddr) | ||
119 | { | ||
120 | return ((iaddr->allocation_group << BEFS_SB(sb)->ag_shift) + | ||
121 | iaddr->start); | ||
122 | } | ||
123 | |||
124 | static inline befs_inode_addr | ||
125 | blockno2iaddr(struct super_block *sb, befs_blocknr_t blockno) | ||
126 | { | ||
127 | befs_inode_addr iaddr; | ||
128 | iaddr.allocation_group = blockno >> BEFS_SB(sb)->ag_shift; | ||
129 | iaddr.start = | ||
130 | blockno - (iaddr.allocation_group << BEFS_SB(sb)->ag_shift); | ||
131 | iaddr.len = 1; | ||
132 | |||
133 | return iaddr; | ||
134 | } | ||
135 | |||
136 | static inline unsigned int | ||
137 | befs_iaddrs_per_block(struct super_block *sb) | ||
138 | { | ||
139 | return BEFS_SB(sb)->block_size / sizeof (befs_inode_addr); | ||
140 | } | ||
141 | |||
142 | static inline int | ||
143 | befs_iaddr_is_empty(befs_inode_addr * iaddr) | ||
144 | { | ||
145 | return (!iaddr->allocation_group) && (!iaddr->start) && (!iaddr->len); | ||
146 | } | ||
147 | |||
148 | static inline size_t | ||
149 | befs_brun_size(struct super_block *sb, befs_block_run run) | ||
150 | { | ||
151 | return BEFS_SB(sb)->block_size * run.len; | ||
152 | } | ||
153 | |||
154 | #endif /* _LINUX_BEFS_H */ | ||