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moby--moby/runconfig/parse_unix.go

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// +build !windows
package runconfig
import (
"fmt"
"strings"
)
// ValidateNetMode ensures that the various combinations of requested
// network settings are valid.
func ValidateNetMode(c *Config, hc *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), ":")
switch mode := parts[0]; mode {
case "default", "bridge", "none", "host":
case "container":
if len(parts) < 2 || parts[1] == "" {
return fmt.Errorf("--net: invalid net mode: invalid container format container:<name|id>")
}
default:
return fmt.Errorf("invalid --net: %s", hc.NetworkMode)
}
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
}