[net-next-2.6.git] / fs / befs / endian.h

/*
 * 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
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/fs/befs/endian.h
	3	*
	4	* Copyright (C) 2001 Will Dyson <will_dyson@pobox.com>
	5	*
	6	* Partially based on similar funtions in the sysv driver.
	7	*/
	8
	9	#ifndef LINUX_BEFS_ENDIAN
	10	#define LINUX_BEFS_ENDIAN
	11
9a6ab769	12	#include <asm/byteorder.h>
1da177e4 LT	13
1da177e4 LT	14	static inline u64
1151895f	15	fs64_to_cpu(const struct super_block *sb, fs64 n)
1da177e4 LT	16	{
1da177e4 LT	17	if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
1151895f	18	return le64_to_cpu((__force __le64)n);
1da177e4	19	else
1151895f	20	return be64_to_cpu((__force __be64)n);
1da177e4 LT	21	}
1da177e4 LT	22
1151895f	23	static inline fs64
1da177e4 LT	24	cpu_to_fs64(const struct super_block *sb, u64 n)
	25	{
	26	if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
1151895f	27	return (__force fs64)cpu_to_le64(n);
1da177e4	28	else
1151895f	29	return (__force fs64)cpu_to_be64(n);
1da177e4 LT	30	}
	31
	32	static inline u32
1151895f	33	fs32_to_cpu(const struct super_block *sb, fs32 n)
1da177e4 LT	34	{
1da177e4 LT	35	if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
1151895f	36	return le32_to_cpu((__force __le32)n);
1da177e4	37	else
1151895f	38	return be32_to_cpu((__force __be32)n);
1da177e4 LT	39	}
1da177e4 LT	40
1151895f	41	static inline fs32
1da177e4 LT	42	cpu_to_fs32(const struct super_block *sb, u32 n)
	43	{
	44	if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
1151895f	45	return (__force fs32)cpu_to_le32(n);
1da177e4	46	else
1151895f	47	return (__force fs32)cpu_to_be32(n);
1da177e4 LT	48	}
	49
	50	static inline u16
1151895f	51	fs16_to_cpu(const struct super_block *sb, fs16 n)
1da177e4 LT	52	{
1da177e4 LT	53	if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
1151895f	54	return le16_to_cpu((__force __le16)n);
1da177e4	55	else
1151895f	56	return be16_to_cpu((__force __be16)n);
1da177e4 LT	57	}
1da177e4 LT	58
1151895f	59	static inline fs16
1da177e4 LT	60	cpu_to_fs16(const struct super_block *sb, u16 n)
	61	{
	62	if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
1151895f	63	return (__force fs16)cpu_to_le16(n);
1da177e4	64	else
1151895f	65	return (__force fs16)cpu_to_be16(n);
1da177e4 LT	66	}
	67
	68	/* Composite types below here */
	69
	70	static inline befs_block_run
a9721f31	71	fsrun_to_cpu(const struct super_block *sb, befs_disk_block_run n)
1da177e4 LT	72	{
	73	befs_block_run run;
	74
	75	if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) {
a9721f31 AV	76	run.allocation_group = le32_to_cpu((__force __le32)n.allocation_group);
	77	run.start = le16_to_cpu((__force __le16)n.start);
	78	run.len = le16_to_cpu((__force __le16)n.len);
1da177e4	79	} else {
a9721f31 AV	80	run.allocation_group = be32_to_cpu((__force __be32)n.allocation_group);
	81	run.start = be16_to_cpu((__force __be16)n.start);
	82	run.len = be16_to_cpu((__force __be16)n.len);
1da177e4 LT	83	}
	84	return run;
	85	}
	86
a9721f31	87	static inline befs_disk_block_run
1da177e4 LT	88	cpu_to_fsrun(const struct super_block *sb, befs_block_run n)
1da177e4 LT	89	{
a9721f31	90	befs_disk_block_run run;
1da177e4 LT	91
	92	if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) {
	93	run.allocation_group = cpu_to_le32(n.allocation_group);
	94	run.start = cpu_to_le16(n.start);
	95	run.len = cpu_to_le16(n.len);
	96	} else {
	97	run.allocation_group = cpu_to_be32(n.allocation_group);
	98	run.start = cpu_to_be16(n.start);
	99	run.len = cpu_to_be16(n.len);
	100	}
	101	return run;
	102	}
	103
	104	static inline befs_data_stream
a9721f31	105	fsds_to_cpu(const struct super_block *sb, befs_disk_data_stream n)
1da177e4 LT	106	{
	107	befs_data_stream data;
	108	int i;
	109
	110	for (i = 0; i < BEFS_NUM_DIRECT_BLOCKS; ++i)
	111	data.direct[i] = fsrun_to_cpu(sb, n.direct[i]);
	112
	113	data.max_direct_range = fs64_to_cpu(sb, n.max_direct_range);
	114	data.indirect = fsrun_to_cpu(sb, n.indirect);
	115	data.max_indirect_range = fs64_to_cpu(sb, n.max_indirect_range);
	116	data.double_indirect = fsrun_to_cpu(sb, n.double_indirect);
	117	data.max_double_indirect_range = fs64_to_cpu(sb,
	118	n.
	119	max_double_indirect_range);
	120	data.size = fs64_to_cpu(sb, n.size);
	121
	122	return data;
	123	}
	124
	125	#endif //LINUX_BEFS_ENDIAN