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moby--moby/runconfig/hostconfig_unix.go
Madhu Venugopal e221b8a3d6 Support --link for user-defined networks
This brings in the container-local alias functionality for containers
connected to u ser-defined networks.

Signed-off-by: Madhu Venugopal <madhu@docker.com>
2016-01-12 13:38:48 -08:00

85 lines
2.4 KiB
Go

// +build !windows
package runconfig
import (
"fmt"
"runtime"
"strings"
"github.com/docker/engine-api/types/container"
)
// DefaultDaemonNetworkMode returns the default network stack the daemon should
// use.
func DefaultDaemonNetworkMode() container.NetworkMode {
return container.NetworkMode("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()
}
// ValidateNetMode ensures that the various combinations of requested
// network settings are valid.
func ValidateNetMode(c *container.Config, hc *container.HostConfig) error {
// We may not be passed a host config, such as in the case of docker commit
if hc == nil {
return nil
}
parts := strings.Split(string(hc.NetworkMode), ":")
if parts[0] == "container" {
if len(parts) < 2 || parts[1] == "" {
return fmt.Errorf("--net: invalid net mode: invalid container format container:<name|id>")
}
}
if (hc.NetworkMode.IsHost() || hc.NetworkMode.IsContainer()) && c.Hostname != "" {
return ErrConflictNetworkHostname
}
if hc.NetworkMode.IsHost() && len(hc.Links) > 0 {
return ErrConflictHostNetworkAndLinks
}
if hc.NetworkMode.IsContainer() && len(hc.Links) > 0 {
return ErrConflictContainerNetworkAndLinks
}
if (hc.NetworkMode.IsHost() || hc.NetworkMode.IsContainer()) && len(hc.DNS) > 0 {
return ErrConflictNetworkAndDNS
}
if (hc.NetworkMode.IsContainer() || hc.NetworkMode.IsHost()) && len(hc.ExtraHosts) > 0 {
return ErrConflictNetworkHosts
}
if (hc.NetworkMode.IsContainer() || hc.NetworkMode.IsHost()) && c.MacAddress != "" {
return ErrConflictContainerNetworkAndMac
}
if hc.NetworkMode.IsContainer() && (len(hc.PortBindings) > 0 || hc.PublishAllPorts == true) {
return ErrConflictNetworkPublishPorts
}
if hc.NetworkMode.IsContainer() && len(c.ExposedPorts) > 0 {
return ErrConflictNetworkExposePorts
}
return nil
}
// ValidateIsolationLevel performs platform specific validation of the
// isolation level in the hostconfig structure. Linux only supports "default"
// which is LXC container isolation
func ValidateIsolationLevel(hc *container.HostConfig) error {
// We may not be passed a host config, such as in the case of docker commit
if hc == nil {
return nil
}
if !hc.Isolation.IsValid() {
return fmt.Errorf("invalid --isolation: %q - %s only supports 'default'", hc.Isolation, runtime.GOOS)
}
return nil
}