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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * linux/fs/befs/endian.h4 *5 * Copyright (C) 2001 Will Dyson <will_dyson@pobox.com>6 *7 * Partially based on similar funtions in the sysv driver.8 */9 10#ifndef LINUX_BEFS_ENDIAN11#define LINUX_BEFS_ENDIAN12 13#include <asm/byteorder.h>14 15static inline u6416fs64_to_cpu(const struct super_block *sb, fs64 n)17{18 if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)19 return le64_to_cpu((__force __le64)n);20 else21 return be64_to_cpu((__force __be64)n);22}23 24static inline fs6425cpu_to_fs64(const struct super_block *sb, u64 n)26{27 if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)28 return (__force fs64)cpu_to_le64(n);29 else30 return (__force fs64)cpu_to_be64(n);31}32 33static inline u3234fs32_to_cpu(const struct super_block *sb, fs32 n)35{36 if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)37 return le32_to_cpu((__force __le32)n);38 else39 return be32_to_cpu((__force __be32)n);40}41 42static inline fs3243cpu_to_fs32(const struct super_block *sb, u32 n)44{45 if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)46 return (__force fs32)cpu_to_le32(n);47 else48 return (__force fs32)cpu_to_be32(n);49}50 51static inline u1652fs16_to_cpu(const struct super_block *sb, fs16 n)53{54 if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)55 return le16_to_cpu((__force __le16)n);56 else57 return be16_to_cpu((__force __be16)n);58}59 60static inline fs1661cpu_to_fs16(const struct super_block *sb, u16 n)62{63 if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)64 return (__force fs16)cpu_to_le16(n);65 else66 return (__force fs16)cpu_to_be16(n);67}68 69/* Composite types below here */70 71static inline befs_block_run72fsrun_to_cpu(const struct super_block *sb, befs_disk_block_run n)73{74 befs_block_run run;75 76 if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) {77 run.allocation_group = le32_to_cpu((__force __le32)n.allocation_group);78 run.start = le16_to_cpu((__force __le16)n.start);79 run.len = le16_to_cpu((__force __le16)n.len);80 } else {81 run.allocation_group = be32_to_cpu((__force __be32)n.allocation_group);82 run.start = be16_to_cpu((__force __be16)n.start);83 run.len = be16_to_cpu((__force __be16)n.len);84 }85 return run;86}87 88static inline befs_disk_block_run89cpu_to_fsrun(const struct super_block *sb, befs_block_run n)90{91 befs_disk_block_run run;92 93 if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) {94 run.allocation_group = cpu_to_le32(n.allocation_group);95 run.start = cpu_to_le16(n.start);96 run.len = cpu_to_le16(n.len);97 } else {98 run.allocation_group = cpu_to_be32(n.allocation_group);99 run.start = cpu_to_be16(n.start);100 run.len = cpu_to_be16(n.len);101 }102 return run;103}104 105static inline befs_data_stream106fsds_to_cpu(const struct super_block *sb, const befs_disk_data_stream *n)107{108 befs_data_stream data;109 int i;110 111 for (i = 0; i < BEFS_NUM_DIRECT_BLOCKS; ++i)112 data.direct[i] = fsrun_to_cpu(sb, n->direct[i]);113 114 data.max_direct_range = fs64_to_cpu(sb, n->max_direct_range);115 data.indirect = fsrun_to_cpu(sb, n->indirect);116 data.max_indirect_range = fs64_to_cpu(sb, n->max_indirect_range);117 data.double_indirect = fsrun_to_cpu(sb, n->double_indirect);118 data.max_double_indirect_range = fs64_to_cpu(sb,119 n->120 max_double_indirect_range);121 data.size = fs64_to_cpu(sb, n->size);122 123 return data;124}125 126#endif //LINUX_BEFS_ENDIAN127