//go:build !windows // +build !windows package runconfig // import "github.com/docker/docker/runconfig" import ( "fmt" "runtime" "github.com/docker/docker/api/types/container" "github.com/docker/docker/pkg/sysinfo" ) // DefaultDaemonNetworkMode returns the default network stack the daemon should // use. func DefaultDaemonNetworkMode() container.NetworkMode { return "bridge" } // IsPreDefinedNetwork indicates if a network is predefined by the daemon func IsPreDefinedNetwork(network string) bool { n := container.NetworkMode(network) return n.IsBridge() || n.IsHost() || n.IsNone() || n.IsDefault() } // validateNetMode ensures that the various combinations of requested // network settings are valid. func validateNetMode(c *container.Config, hc *container.HostConfig) error { err := validateNetContainerMode(c, hc) if err != nil { return err } if hc.UTSMode.IsHost() && c.Hostname != "" { return ErrConflictUTSHostname } if hc.NetworkMode.IsHost() && len(hc.Links) > 0 { return ErrConflictHostNetworkAndLinks } return nil } // validateIsolation performs platform specific validation of // isolation in the hostconfig structure. Linux only supports "default" // which is LXC container isolation func validateIsolation(hc *container.HostConfig) error { if !hc.Isolation.IsValid() { return fmt.Errorf("Invalid isolation: %q - %s only supports 'default'", hc.Isolation, runtime.GOOS) } return nil } // validateQoS performs platform specific validation of the QoS settings func validateQoS(hc *container.HostConfig) error { if hc.IOMaximumBandwidth != 0 { return fmt.Errorf("Invalid QoS settings: %s does not support configuration of maximum bandwidth", runtime.GOOS) } if hc.IOMaximumIOps != 0 { return fmt.Errorf("Invalid QoS settings: %s does not support configuration of maximum IOPs", runtime.GOOS) } return nil } // validateResources performs platform specific validation of the resource settings // cpu-rt-runtime and cpu-rt-period can not be greater than their parent, cpu-rt-runtime requires sys_nice func validateResources(hc *container.HostConfig, si *sysinfo.SysInfo) error { if (hc.Resources.CPURealtimePeriod != 0 || hc.Resources.CPURealtimeRuntime != 0) && !si.CPURealtime { return fmt.Errorf("Your kernel does not support CPU real-time scheduler") } if hc.Resources.CPURealtimePeriod != 0 && hc.Resources.CPURealtimeRuntime != 0 && hc.Resources.CPURealtimeRuntime > hc.Resources.CPURealtimePeriod { return fmt.Errorf("cpu real-time runtime cannot be higher than cpu real-time period") } return nil } // validatePrivileged performs platform specific validation of the Privileged setting func validatePrivileged(_ *container.HostConfig) error { return nil } // validateReadonlyRootfs performs platform specific validation of the ReadonlyRootfs setting func validateReadonlyRootfs(_ *container.HostConfig) error { return nil }