git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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> | |
| 1da177e4 LT |
13 | |
| 14 | static inline u64 | |
| 15 | fs64_to_cpu(const struct super_block *sb, u64 n) | |
| 16 | { | |
| 17 | if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) | |
| 18 | return le64_to_cpu(n); | |
| 19 | else | |
| 20 | return be64_to_cpu(n); | |
| 21 | } | |
| 22 | ||
| 23 | static inline u64 | |
| 24 | cpu_to_fs64(const struct super_block *sb, u64 n) | |
| 25 | { | |
| 26 | if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) | |
| 27 | return cpu_to_le64(n); | |
| 28 | else | |
| 29 | return cpu_to_be64(n); | |
| 30 | } | |
| 31 | ||
| 32 | static inline u32 | |
| 33 | fs32_to_cpu(const struct super_block *sb, u32 n) | |
| 34 | { | |
| 35 | if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) | |
| 36 | return le32_to_cpu(n); | |
| 37 | else | |
| 38 | return be32_to_cpu(n); | |
| 39 | } | |
| 40 | ||
| 41 | static inline u32 | |
| 42 | cpu_to_fs32(const struct super_block *sb, u32 n) | |
| 43 | { | |
| 44 | if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) | |
| 45 | return cpu_to_le32(n); | |
| 46 | else | |
| 47 | return cpu_to_be32(n); | |
| 48 | } | |
| 49 | ||
| 50 | static inline u16 | |
| 51 | fs16_to_cpu(const struct super_block *sb, u16 n) | |
| 52 | { | |
| 53 | if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) | |
| 54 | return le16_to_cpu(n); | |
| 55 | else | |
| 56 | return be16_to_cpu(n); | |
| 57 | } | |
| 58 | ||
| 59 | static inline u16 | |
| 60 | cpu_to_fs16(const struct super_block *sb, u16 n) | |
| 61 | { | |
| 62 | if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) | |
| 63 | return cpu_to_le16(n); | |
| 64 | else | |
| 65 | return cpu_to_be16(n); | |
| 66 | } | |
| 67 | ||
| 68 | /* Composite types below here */ | |
| 69 | ||
| 70 | static inline befs_block_run | |
| 71 | fsrun_to_cpu(const struct super_block *sb, befs_block_run n) | |
| 72 | { | |
| 73 | befs_block_run run; | |
| 74 | ||
| 75 | if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) { | |
| 76 | run.allocation_group = le32_to_cpu(n.allocation_group); | |
| 77 | run.start = le16_to_cpu(n.start); | |
| 78 | run.len = le16_to_cpu(n.len); | |
| 79 | } else { | |
| 80 | run.allocation_group = be32_to_cpu(n.allocation_group); | |
| 81 | run.start = be16_to_cpu(n.start); | |
| 82 | run.len = be16_to_cpu(n.len); | |
| 83 | } | |
| 84 | return run; | |
| 85 | } | |
| 86 | ||
| 87 | static inline befs_block_run | |
| 88 | cpu_to_fsrun(const struct super_block *sb, befs_block_run n) | |
| 89 | { | |
| 90 | befs_block_run run; | |
| 91 | ||
| 92 | if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) { | |
| 93 | run.allocation_group = cpu_to_le32(n.allocation_group); | |
| 94 | run.start = cpu_to_le16(n.start); | |
| 95 | run.len = cpu_to_le16(n.len); | |
| 96 | } else { | |
| 97 | run.allocation_group = cpu_to_be32(n.allocation_group); | |
| 98 | run.start = cpu_to_be16(n.start); | |
| 99 | run.len = cpu_to_be16(n.len); | |
| 100 | } | |
| 101 | return run; | |
| 102 | } | |
| 103 | ||
| 104 | static inline befs_data_stream | |
| 105 | fsds_to_cpu(const struct super_block *sb, befs_data_stream n) | |
| 106 | { | |
| 107 | befs_data_stream data; | |
| 108 | int i; | |
| 109 | ||
| 110 | for (i = 0; i < BEFS_NUM_DIRECT_BLOCKS; ++i) | |
| 111 | data.direct[i] = fsrun_to_cpu(sb, n.direct[i]); | |
| 112 | ||
| 113 | data.max_direct_range = fs64_to_cpu(sb, n.max_direct_range); | |
| 114 | data.indirect = fsrun_to_cpu(sb, n.indirect); | |
| 115 | data.max_indirect_range = fs64_to_cpu(sb, n.max_indirect_range); | |
| 116 | data.double_indirect = fsrun_to_cpu(sb, n.double_indirect); | |
| 117 | data.max_double_indirect_range = fs64_to_cpu(sb, | |
| 118 | n. | |
| 119 | max_double_indirect_range); | |
| 120 | data.size = fs64_to_cpu(sb, n.size); | |
| 121 | ||
| 122 | return data; | |
| 123 | } | |
| 124 | ||
| 125 | #endif //LINUX_BEFS_ENDIAN |