func()

in inotify/inotify_linux.go [79:108]

• 26 lines of code
• 5 McCabe index (conditional complexity)

func (w *Watcher) AddWatch(path string, flags uint32) error {
	if w.isClosed {
		return errors.New("inotify instance already closed")
	}

	watchEntry, found := w.watches[path]
	if found {
		watchEntry.flags |= flags
		flags |= syscall.IN_MASK_ADD
	}

	w.mu.Lock() // synchronize with readEvents goroutine

	wd, err := syscall.InotifyAddWatch(w.fd, path, flags)
	if err != nil {
		w.mu.Unlock()
		return &os.PathError{
			Op:   "inotify_add_watch",
			Path: path,
			Err:  err,
		}
	}

	if !found {
		w.watches[path] = &watch{wd: uint32(wd), flags: flags}
		w.paths[wd] = path
	}
	w.mu.Unlock()
	return nil
}