// Copyright 2019 the Go-FUSE Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package fs

import (
	"syscall"

	"github.com/hanwen/go-fuse/v2/fuse"
	"github.com/hanwen/go-fuse/v2/internal/xattr"
)

// OK is the Errno return value to indicate absense of errors.
var OK = syscall.Errno(0)

// ToErrno exhumes the syscall.Errno error from wrapped error values.
func ToErrno(err error) syscall.Errno {
	s := fuse.ToStatus(err)
	return syscall.Errno(s)
}

// RENAME_EXCHANGE is a flag argument for renameat2()
const RENAME_EXCHANGE = 0x2

// seek to the next data
const _SEEK_DATA = 3

// seek to the next hole
const _SEEK_HOLE = 4

// ENOATTR indicates that an extended attribute was not present.
const ENOATTR = xattr.ENOATTR