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126 lines
3.2 KiB
126 lines
3.2 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* linux/fs/befs/endian.h |
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* |
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* Copyright (C) 2001 Will Dyson <[email protected]> |
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* |
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* Partially based on similar funtions in the sysv driver. |
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*/ |
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#ifndef LINUX_BEFS_ENDIAN |
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#define LINUX_BEFS_ENDIAN |
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#include <asm/byteorder.h> |
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static inline u64 |
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fs64_to_cpu(const struct super_block *sb, fs64 n) |
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{ |
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if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) |
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return le64_to_cpu((__force __le64)n); |
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else |
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return be64_to_cpu((__force __be64)n); |
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} |
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static inline fs64 |
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cpu_to_fs64(const struct super_block *sb, u64 n) |
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{ |
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if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) |
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return (__force fs64)cpu_to_le64(n); |
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else |
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return (__force fs64)cpu_to_be64(n); |
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} |
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static inline u32 |
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fs32_to_cpu(const struct super_block *sb, fs32 n) |
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{ |
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if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) |
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return le32_to_cpu((__force __le32)n); |
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else |
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return be32_to_cpu((__force __be32)n); |
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} |
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static inline fs32 |
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cpu_to_fs32(const struct super_block *sb, u32 n) |
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{ |
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if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) |
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return (__force fs32)cpu_to_le32(n); |
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else |
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return (__force fs32)cpu_to_be32(n); |
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} |
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static inline u16 |
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fs16_to_cpu(const struct super_block *sb, fs16 n) |
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{ |
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if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) |
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return le16_to_cpu((__force __le16)n); |
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else |
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return be16_to_cpu((__force __be16)n); |
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} |
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static inline fs16 |
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cpu_to_fs16(const struct super_block *sb, u16 n) |
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{ |
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if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) |
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return (__force fs16)cpu_to_le16(n); |
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else |
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return (__force fs16)cpu_to_be16(n); |
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} |
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/* Composite types below here */ |
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static inline befs_block_run |
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fsrun_to_cpu(const struct super_block *sb, befs_disk_block_run n) |
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{ |
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befs_block_run run; |
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if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) { |
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run.allocation_group = le32_to_cpu((__force __le32)n.allocation_group); |
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run.start = le16_to_cpu((__force __le16)n.start); |
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run.len = le16_to_cpu((__force __le16)n.len); |
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} else { |
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run.allocation_group = be32_to_cpu((__force __be32)n.allocation_group); |
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run.start = be16_to_cpu((__force __be16)n.start); |
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run.len = be16_to_cpu((__force __be16)n.len); |
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} |
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return run; |
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} |
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static inline befs_disk_block_run |
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cpu_to_fsrun(const struct super_block *sb, befs_block_run n) |
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{ |
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befs_disk_block_run run; |
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if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) { |
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run.allocation_group = cpu_to_le32(n.allocation_group); |
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run.start = cpu_to_le16(n.start); |
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run.len = cpu_to_le16(n.len); |
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} else { |
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run.allocation_group = cpu_to_be32(n.allocation_group); |
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run.start = cpu_to_be16(n.start); |
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run.len = cpu_to_be16(n.len); |
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} |
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return run; |
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} |
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static inline befs_data_stream |
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fsds_to_cpu(const struct super_block *sb, const befs_disk_data_stream *n) |
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{ |
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befs_data_stream data; |
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int i; |
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for (i = 0; i < BEFS_NUM_DIRECT_BLOCKS; ++i) |
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data.direct[i] = fsrun_to_cpu(sb, n->direct[i]); |
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data.max_direct_range = fs64_to_cpu(sb, n->max_direct_range); |
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data.indirect = fsrun_to_cpu(sb, n->indirect); |
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data.max_indirect_range = fs64_to_cpu(sb, n->max_indirect_range); |
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data.double_indirect = fsrun_to_cpu(sb, n->double_indirect); |
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data.max_double_indirect_range = fs64_to_cpu(sb, |
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n-> |
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max_double_indirect_range); |
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data.size = fs64_to_cpu(sb, n->size); |
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return data; |
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} |
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#endif //LINUX_BEFS_ENDIAN
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