3f445e63b4
Docker creates a UTS namespace by default, even with --net=host, so it is reasonable to let the user set the hostname. Note that --hostname is forbidden if the user specifies --uts=host. Closes #12076 Signed-off-by: Jason Heiss <jheiss@aput.net>
89 lines
2.5 KiB
Go
89 lines
2.5 KiB
Go
// +build !windows
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package runconfig
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import (
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"fmt"
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"runtime"
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"strings"
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"github.com/docker/engine-api/types/container"
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)
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// DefaultDaemonNetworkMode returns the default network stack the daemon should
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// use.
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func DefaultDaemonNetworkMode() container.NetworkMode {
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return container.NetworkMode("bridge")
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}
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// IsPreDefinedNetwork indicates if a network is predefined by the daemon
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func IsPreDefinedNetwork(network string) bool {
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n := container.NetworkMode(network)
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return n.IsBridge() || n.IsHost() || n.IsNone() || n.IsDefault()
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}
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// ValidateNetMode ensures that the various combinations of requested
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// network settings are valid.
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func ValidateNetMode(c *container.Config, hc *container.HostConfig) error {
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// We may not be passed a host config, such as in the case of docker commit
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if hc == nil {
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return nil
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}
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parts := strings.Split(string(hc.NetworkMode), ":")
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if parts[0] == "container" {
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if len(parts) < 2 || parts[1] == "" {
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return fmt.Errorf("--net: invalid net mode: invalid container format container:<name|id>")
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}
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}
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if hc.NetworkMode.IsContainer() && c.Hostname != "" {
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return ErrConflictNetworkHostname
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}
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if hc.UTSMode.IsHost() && c.Hostname != "" {
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return ErrConflictUTSHostname
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}
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if hc.NetworkMode.IsHost() && len(hc.Links) > 0 {
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return ErrConflictHostNetworkAndLinks
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}
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if hc.NetworkMode.IsContainer() && len(hc.Links) > 0 {
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return ErrConflictContainerNetworkAndLinks
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}
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if (hc.NetworkMode.IsHost() || hc.NetworkMode.IsContainer()) && len(hc.DNS) > 0 {
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return ErrConflictNetworkAndDNS
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}
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if (hc.NetworkMode.IsContainer() || hc.NetworkMode.IsHost()) && len(hc.ExtraHosts) > 0 {
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return ErrConflictNetworkHosts
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}
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if (hc.NetworkMode.IsContainer() || hc.NetworkMode.IsHost()) && c.MacAddress != "" {
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return ErrConflictContainerNetworkAndMac
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}
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if hc.NetworkMode.IsContainer() && (len(hc.PortBindings) > 0 || hc.PublishAllPorts == true) {
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return ErrConflictNetworkPublishPorts
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}
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if hc.NetworkMode.IsContainer() && len(c.ExposedPorts) > 0 {
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return ErrConflictNetworkExposePorts
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}
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return nil
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}
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// ValidateIsolation performs platform specific validation of
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// isolation in the hostconfig structure. Linux only supports "default"
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// which is LXC container isolation
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func ValidateIsolation(hc *container.HostConfig) error {
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// We may not be passed a host config, such as in the case of docker commit
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if hc == nil {
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return nil
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}
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if !hc.Isolation.IsValid() {
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return fmt.Errorf("invalid --isolation: %q - %s only supports 'default'", hc.Isolation, runtime.GOOS)
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}
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return nil
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}
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