58 lines
823 B
Go
58 lines
823 B
Go
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// +build windows
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package fileutil
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import (
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"errors"
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"os"
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)
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var (
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ErrLocked = errors.New("file already locked")
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)
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type Lock interface {
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Name() string
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TryLock() error
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Lock() error
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Unlock() error
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Destroy() error
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}
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type lock struct {
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fd int
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file *os.File
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}
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func (l *lock) Name() string {
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return l.file.Name()
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}
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// TryLock acquires exclusivity on the lock without blocking
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func (l *lock) TryLock() error {
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return nil
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}
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// Lock acquires exclusivity on the lock without blocking
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func (l *lock) Lock() error {
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return nil
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}
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// Unlock unlocks the lock
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func (l *lock) Unlock() error {
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return nil
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}
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func (l *lock) Destroy() error {
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return l.file.Close()
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}
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func NewLock(file string) (Lock, error) {
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f, err := os.Open(file)
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if err != nil {
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return nil, err
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}
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l := &lock{int(f.Fd()), f}
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return l, nil
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}
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