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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/befs/endian.h | |
download | kernel_samsung_aries-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip kernel_samsung_aries-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz kernel_samsung_aries-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2 |
Linux-2.6.12-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 0000000..9ecaea4 --- /dev/null +++ b/fs/befs/endian.h @@ -0,0 +1,126 @@ +/* + * linux/fs/befs/endian.h + * + * Copyright (C) 2001 Will Dyson <will_dyson@pobox.com> + * + * Partially based on similar funtions in the sysv driver. + */ + +#ifndef LINUX_BEFS_ENDIAN +#define LINUX_BEFS_ENDIAN + +#include <linux/byteorder/generic.h> +#include "befs.h" + +static inline u64 +fs64_to_cpu(const struct super_block *sb, u64 n) +{ + if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) + return le64_to_cpu(n); + else + return be64_to_cpu(n); +} + +static inline u64 +cpu_to_fs64(const struct super_block *sb, u64 n) +{ + if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) + return cpu_to_le64(n); + else + return cpu_to_be64(n); +} + +static inline u32 +fs32_to_cpu(const struct super_block *sb, u32 n) +{ + if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) + return le32_to_cpu(n); + else + return be32_to_cpu(n); +} + +static inline u32 +cpu_to_fs32(const struct super_block *sb, u32 n) +{ + if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) + return cpu_to_le32(n); + else + return cpu_to_be32(n); +} + +static inline u16 +fs16_to_cpu(const struct super_block *sb, u16 n) +{ + if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) + return le16_to_cpu(n); + else + return be16_to_cpu(n); +} + +static inline u16 +cpu_to_fs16(const struct super_block *sb, u16 n) +{ + if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) + return cpu_to_le16(n); + else + return cpu_to_be16(n); +} + +/* Composite types below here */ + +static inline befs_block_run +fsrun_to_cpu(const struct super_block *sb, befs_block_run n) +{ + befs_block_run run; + + if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) { + run.allocation_group = le32_to_cpu(n.allocation_group); + run.start = le16_to_cpu(n.start); + run.len = le16_to_cpu(n.len); + } else { + run.allocation_group = be32_to_cpu(n.allocation_group); + run.start = be16_to_cpu(n.start); + run.len = be16_to_cpu(n.len); + } + return run; +} + +static inline befs_block_run +cpu_to_fsrun(const struct super_block *sb, befs_block_run n) +{ + befs_block_run run; + + if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) { + run.allocation_group = cpu_to_le32(n.allocation_group); + run.start = cpu_to_le16(n.start); + run.len = cpu_to_le16(n.len); + } else { + run.allocation_group = cpu_to_be32(n.allocation_group); + run.start = cpu_to_be16(n.start); + run.len = cpu_to_be16(n.len); + } + return run; +} + +static inline befs_data_stream +fsds_to_cpu(const struct super_block *sb, befs_data_stream n) +{ + befs_data_stream data; + int i; + + for (i = 0; i < BEFS_NUM_DIRECT_BLOCKS; ++i) + data.direct[i] = fsrun_to_cpu(sb, n.direct[i]); + + data.max_direct_range = fs64_to_cpu(sb, n.max_direct_range); + data.indirect = fsrun_to_cpu(sb, n.indirect); + data.max_indirect_range = fs64_to_cpu(sb, n.max_indirect_range); + data.double_indirect = fsrun_to_cpu(sb, n.double_indirect); + data.max_double_indirect_range = fs64_to_cpu(sb, + n. + max_double_indirect_range); + data.size = fs64_to_cpu(sb, n.size); + + return data; +} + +#endif //LINUX_BEFS_ENDIAN |