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/endian.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/endian.h')
-rw-r--r-- | fs/befs/endian.h | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/fs/befs/endian.h b/fs/befs/endian.h new file mode 100644 index 000000000000..9ecaea4e3325 --- /dev/null +++ b/fs/befs/endian.h | |||
@@ -0,0 +1,126 @@ | |||
1 | /* | ||
2 | * linux/fs/befs/endian.h | ||
3 | * | ||
4 | * Copyright (C) 2001 Will Dyson <will_dyson@pobox.com> | ||
5 | * | ||
6 | * Partially based on similar funtions in the sysv driver. | ||
7 | */ | ||
8 | |||
9 | #ifndef LINUX_BEFS_ENDIAN | ||
10 | #define LINUX_BEFS_ENDIAN | ||
11 | |||
12 | #include <linux/byteorder/generic.h> | ||
13 | #include "befs.h" | ||
14 | |||
15 | static inline u64 | ||
16 | fs64_to_cpu(const struct super_block *sb, u64 n) | ||
17 | { | ||
18 | if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) | ||
19 | return le64_to_cpu(n); | ||
20 | else | ||
21 | return be64_to_cpu(n); | ||
22 | } | ||
23 | |||
24 | static inline u64 | ||
25 | cpu_to_fs64(const struct super_block *sb, u64 n) | ||
26 | { | ||
27 | if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) | ||
28 | return cpu_to_le64(n); | ||
29 | else | ||
30 | return cpu_to_be64(n); | ||
31 | } | ||
32 | |||
33 | static inline u32 | ||
34 | fs32_to_cpu(const struct super_block *sb, u32 n) | ||
35 | { | ||
36 | if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) | ||
37 | return le32_to_cpu(n); | ||
38 | else | ||
39 | return be32_to_cpu(n); | ||
40 | } | ||
41 | |||
42 | static inline u32 | ||
43 | cpu_to_fs32(const struct super_block *sb, u32 n) | ||
44 | { | ||
45 | if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) | ||
46 | return cpu_to_le32(n); | ||
47 | else | ||
48 | return cpu_to_be32(n); | ||
49 | } | ||
50 | |||
51 | static inline u16 | ||
52 | fs16_to_cpu(const struct super_block *sb, u16 n) | ||
53 | { | ||
54 | if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) | ||
55 | return le16_to_cpu(n); | ||
56 | else | ||
57 | return be16_to_cpu(n); | ||
58 | } | ||
59 | |||
60 | static inline u16 | ||
61 | cpu_to_fs16(const struct super_block *sb, u16 n) | ||
62 | { | ||
63 | if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) | ||
64 | return cpu_to_le16(n); | ||
65 | else | ||
66 | return cpu_to_be16(n); | ||
67 | } | ||
68 | |||
69 | /* Composite types below here */ | ||
70 | |||
71 | static inline befs_block_run | ||
72 | fsrun_to_cpu(const struct super_block *sb, befs_block_run n) | ||
73 | { | ||
74 | befs_block_run run; | ||
75 | |||
76 | if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) { | ||
77 | run.allocation_group = le32_to_cpu(n.allocation_group); | ||
78 | run.start = le16_to_cpu(n.start); | ||
79 | run.len = le16_to_cpu(n.len); | ||
80 | } else { | ||
81 | run.allocation_group = be32_to_cpu(n.allocation_group); | ||
82 | run.start = be16_to_cpu(n.start); | ||
83 | run.len = be16_to_cpu(n.len); | ||
84 | } | ||
85 | return run; | ||
86 | } | ||
87 | |||
88 | static inline befs_block_run | ||
89 | cpu_to_fsrun(const struct super_block *sb, befs_block_run n) | ||
90 | { | ||
91 | befs_block_run run; | ||
92 | |||
93 | if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) { | ||
94 | run.allocation_group = cpu_to_le32(n.allocation_group); | ||
95 | run.start = cpu_to_le16(n.start); | ||
96 | run.len = cpu_to_le16(n.len); | ||
97 | } else { | ||
98 | run.allocation_group = cpu_to_be32(n.allocation_group); | ||
99 | run.start = cpu_to_be16(n.start); | ||
100 | run.len = cpu_to_be16(n.len); | ||
101 | } | ||
102 | return run; | ||
103 | } | ||
104 | |||
105 | static inline befs_data_stream | ||
106 | fsds_to_cpu(const struct super_block *sb, befs_data_stream n) | ||
107 | { | ||
108 | befs_data_stream data; | ||
109 | int i; | ||
110 | |||
111 | for (i = 0; i < BEFS_NUM_DIRECT_BLOCKS; ++i) | ||
112 | data.direct[i] = fsrun_to_cpu(sb, n.direct[i]); | ||
113 | |||
114 | data.max_direct_range = fs64_to_cpu(sb, n.max_direct_range); | ||
115 | data.indirect = fsrun_to_cpu(sb, n.indirect); | ||
116 | data.max_indirect_range = fs64_to_cpu(sb, n.max_indirect_range); | ||
117 | data.double_indirect = fsrun_to_cpu(sb, n.double_indirect); | ||
118 | data.max_double_indirect_range = fs64_to_cpu(sb, | ||
119 | n. | ||
120 | max_double_indirect_range); | ||
121 | data.size = fs64_to_cpu(sb, n.size); | ||
122 | |||
123 | return data; | ||
124 | } | ||
125 | |||
126 | #endif //LINUX_BEFS_ENDIAN | ||