// verifyContainerSettings performs validation of the hostconfig and config // structures. func (daemon *Daemon) verifyContainerSettings(hostConfig *runconfig.HostConfig, config *runconfig.Config) ([]string, error) { // First perform verification of settings common across all platforms. if config != nil { if config.WorkingDir != "" { config.WorkingDir = filepath.FromSlash(config.WorkingDir) // Ensure in platform semantics if !system.IsAbs(config.WorkingDir) { return nil, fmt.Errorf("The working directory '%s' is invalid. It needs to be an absolute path.", config.WorkingDir) } } } if hostConfig == nil { return nil, nil } for port := range hostConfig.PortBindings { _, portStr := nat.SplitProtoPort(string(port)) if _, err := nat.ParsePort(portStr); err != nil { return nil, fmt.Errorf("Invalid port specification: %q", portStr) } for _, pb := range hostConfig.PortBindings[port] { _, err := nat.NewPort(nat.SplitProtoPort(pb.HostPort)) if err != nil { return nil, fmt.Errorf("Invalid port specification: %q", pb.HostPort) } } } // Now do platform-specific verification return verifyPlatformContainerSettings(daemon, hostConfig, config) }