ceremonyclient/pebble/vfs/default_windows.go
Cassandra Heart 2e2a1e4789
v1.2.0 (#31)
2024-01-03 01:31:42 -06:00

62 lines
1.6 KiB
Go

// Copyright 2023 The LevelDB-Go and Pebble Authors. All rights reserved. Use
// of this source code is governed by a BSD-style license that can be found in
// the LICENSE file.
//go:build windows
// +build windows
package vfs
import (
"os"
"syscall"
"github.com/cockroachdb/errors"
)
func wrapOSFileImpl(f *os.File) File {
return &windowsFile{f}
}
func (defaultFS) OpenDir(name string) (File, error) {
f, err := os.OpenFile(name, syscall.O_CLOEXEC, 0)
if err != nil {
return nil, errors.WithStack(err)
}
return &windowsDir{f}, nil
}
// Assert that windowsFile and windowsDir implement vfs.File.
var (
_ File = (*windowsFile)(nil)
_ File = (*windowsDir)(nil)
)
type windowsDir struct {
*os.File
}
func (*windowsDir) Prefetch(offset int64, length int64) error { return nil }
func (*windowsDir) Preallocate(off, length int64) error { return nil }
// Silently ignore Sync() on Windows. This is the same behavior as
// RocksDB. See port/win/io_win.cc:WinDirectory::Fsync().
func (*windowsDir) Sync() error { return nil }
func (*windowsDir) SyncData() error { return nil }
func (*windowsDir) SyncTo(length int64) (fullSync bool, err error) { return false, nil }
type windowsFile struct {
*os.File
}
func (*windowsFile) Prefetch(offset int64, length int64) error { return nil }
func (*windowsFile) Preallocate(offset, length int64) error { return nil }
func (f *windowsFile) SyncData() error { return f.Sync() }
func (f *windowsFile) SyncTo(length int64) (fullSync bool, err error) {
if err = f.Sync(); err != nil {
return false, err
}
return true, nil
}