1  // Copyright 2026 Alibaba Group Holding Ltd.
 2  //
 3  // Licensed under the Apache License, Version 2.0 (the "License");
 4  // you may not use this file except in compliance with the License.
 5  // You may obtain a copy of the License at
 6  //
 7  //     http://www.apache.org/licenses/LICENSE-2.0
 8  //
 9  // Unless required by applicable law or agreed to in writing, software
10  // distributed under the License is distributed on an "AS IS" BASIS,
11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  // See the License for the specific language governing permissions and
13  // limitations under the License.
14  
15  package runtime
16  
17  import (
18  	"fmt"
19  	"os"
20  
21  	"github.com/alibaba/opensandbox/execd/pkg/util/pathutil"
22  )
23  
24  func ValidateWorkingDir(cwd string) error {
25  	if cwd == "" {
26  		return nil
27  	}
28  	resolvedCwd, err := pathutil.ExpandPath(cwd)
29  	if err != nil {
30  		return fmt.Errorf("cannot resolve working directory %q: %w", cwd, err)
31  	}
32  	fi, err := os.Stat(resolvedCwd)
33  	if err != nil {
34  		if os.IsNotExist(err) {
35  			return fmt.Errorf("working directory does not exist: %s", cwd)
36  		}
37  		return fmt.Errorf("cannot access working directory %q: %w", cwd, err)
38  	}
39  	if !fi.IsDir() {
40  		return fmt.Errorf("working directory path is not a directory: %s", cwd)
41  	}
42  	return nil
43  }