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fs/befs/endian.h
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/* SPDX-License-Identifier: GPL-2.0 */ /* * 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 <asm/byteorder.h> static inline u64 fs64_to_cpu(const struct super_block *sb, fs64 n) { if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) return le64_to_cpu((__force __le64)n); else return be64_to_cpu((__force __be64)n); } static inline fs64 cpu_to_fs64(const struct super_block *sb, u64 n) { if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) return (__force fs64)cpu_to_le64(n); else return (__force fs64)cpu_to_be64(n); } static inline u32 fs32_to_cpu(const struct super_block *sb, fs32 n) { if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) return le32_to_cpu((__force __le32)n); else return be32_to_cpu((__force __be32)n); } static inline fs32 cpu_to_fs32(const struct super_block *sb, u32 n) { if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) return (__force fs32)cpu_to_le32(n); else return (__force fs32)cpu_to_be32(n); } static inline u16 fs16_to_cpu(const struct super_block *sb, fs16 n) { if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) return le16_to_cpu((__force __le16)n); else return be16_to_cpu((__force __be16)n); } static inline fs16 cpu_to_fs16(const struct super_block *sb, u16 n) { if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) return (__force fs16)cpu_to_le16(n); else return (__force fs16)cpu_to_be16(n); } /* Composite types below here */ static inline befs_block_run fsrun_to_cpu(const struct super_block *sb, befs_disk_block_run n) { befs_block_run run; if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) { run.allocation_group = le32_to_cpu((__force __le32)n.allocation_group); run.start = le16_to_cpu((__force __le16)n.start); run.len = le16_to_cpu((__force __le16)n.len); } else { run.allocation_group = be32_to_cpu((__force __be32)n.allocation_group); run.start = be16_to_cpu((__force __be16)n.start); run.len = be16_to_cpu((__force __be16)n.len); } return run; } static inline befs_disk_block_run cpu_to_fsrun(const struct super_block *sb, befs_block_run n) { befs_disk_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, const befs_disk_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 |