From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- fs/befs/endian.h | 126 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 126 insertions(+) create mode 100644 fs/befs/endian.h (limited to 'fs/befs/endian.h') diff --git a/fs/befs/endian.h b/fs/befs/endian.h new file mode 100644 index 0000000000..bb55a54c24 --- /dev/null +++ b/fs/befs/endian.h @@ -0,0 +1,126 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * linux/fs/befs/endian.h + * + * Copyright (C) 2001 Will Dyson + * + * Partially based on similar funtions in the sysv driver. + */ + +#ifndef LINUX_BEFS_ENDIAN +#define LINUX_BEFS_ENDIAN + +#include + +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 -- cgit v1.2.3