package util import ( "errors" "os" "github.com/joeslay/seaweedfs/weed/glog" ) func TestFolderWritable(folder string) (err error) { fileInfo, err := os.Stat(folder) if err != nil { return err } if !fileInfo.IsDir() { return errors.New("Not a valid folder!") } perm := fileInfo.Mode().Perm() glog.V(0).Infoln("Folder", folder, "Permission:", perm) if 0200&perm != 0 { return nil } return errors.New("Not writable!") } func GetFileSize(file *os.File) (size int64, err error) { var fi os.FileInfo if fi, err = file.Stat(); err == nil { size = fi.Size() } return } func FileExists(filename string) bool { _, err := os.Stat(filename) if os.IsNotExist(err) { return false } return true }