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// SPDX-License-Identifier: GPL-2.0+
#ifndef __BTRFS_COMPAT_H__
#define __BTRFS_COMPAT_H__
#include <linux/errno.h>
#include <fs_internal.h>
#include <uuid.h>
/* Provide a compatibility layer to make code syncing easier */
/* A simple wraper to for error() used in btrfs-progs */
#define error(fmt, ...) pr_err("BTRFS: " fmt "\n", ##__VA_ARGS__)
#define ASSERT(c) assert(c)
#define BTRFS_UUID_UNPARSED_SIZE 37
/* No <linux/limits.h> so have to define it here */
#define XATTR_NAME_MAX 255
#define PATH_MAX 4096
/*
* Macros to generate set/get funcs for the struct fields
* assume there is a lefoo_to_cpu for every type, so lets make a simple
* one for u8:
*/
#define le8_to_cpu(v) (v)
#define cpu_to_le8(v) (v)
#define __le8 u8
/*
* Macros to generate set/get funcs for the struct fields
* assume there is a lefoo_to_cpu for every type, so lets make a simple
* one for u8:
*/
#define le8_to_cpu(v) (v)
#define cpu_to_le8(v) (v)
#define __le8 u8
#define get_unaligned_le8(p) (*((u8 *)(p)))
#define get_unaligned_8(p) (*((u8 *)(p)))
#define put_unaligned_le8(val,p) ((*((u8 *)(p))) = (val))
#define put_unaligned_8(val,p) ((*((u8 *)(p))) = (val))
/*
* Read data from device specified by @desc and @part
*
* U-Boot equivalent of pread().
*
* Return the bytes of data read.
* Return <0 for error.
*/
static inline int __btrfs_devread(struct blk_desc *desc,
struct disk_partition *part,
void *buf, size_t size, u64 offset)
{
lbaint_t sector;
int byte_offset;
int ret;
sector = offset >> desc->log2blksz;
byte_offset = offset % desc->blksz;
/* fs_devread() return 0 for error, >0 for success */
ret = fs_devread(desc, part, sector, byte_offset, size, buf);
if (!ret)
return -EIO;
return size;
}
static inline void uuid_unparse(const u8 *uuid, char *out)
{
return uuid_bin_to_str((unsigned char *)uuid, out, 0);
}
static inline int is_power_of_2(unsigned long n)
{
return (n != 0 && ((n & (n - 1)) == 0));
}
#endif
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