126 lines
3.1 KiB
C
126 lines
3.1 KiB
C
/*
|
|
* 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, 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
|