在 Golang 中查看目录是否可写的跨平台方法？

func IsWritable(path string) (isWritable bool, err error) {
    isWritable = false
    info, err := os.Stat(path)
    if err != nil {
        fmt.Println("Path doesn't exist")
        return
    }

    err = nil
    if !info.IsDir() {
        fmt.Println("Path isn't a directory")
        return
    }

    // Check if the user bit is enabled in file permission
    if info.Mode().Perm() & (1 << (uint(7))) == 0 {
        fmt.Println("Write permission bit is not set on this file for user")
        return
    }

    var stat syscall.Stat_t
    if err = syscall.Stat(path, &stat); err != nil {
        fmt.Println("Unable to get stat")
        return
    }

    err = nil
    if uint32(os.Geteuid()) != stat.Uid {
        isWritable = false
        fmt.Println("User doesn't have permission to write to this directory")
        return
    }

    isWritable = true
    return
}

func IsWritable(path string) (bool, error) {
    tmpFile := "tmpfile"

    file, err := os.CreateTemp(path, tmpFile)
    if err != nil {
        return false, err
    }

    defer os.Remove(file.Name())
    defer file.Close()

    return true, nil
}


func main() {
     path := "absolute-directory-path"

    isWritable, err := IsWritable(path)
    if err != nil {
       panic(err)
    }

    if isWritable {
      // statements
    }

}