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83 lines
2.8 KiB
Go
83 lines
2.8 KiB
Go
//go:build !windows
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// +build !windows
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package runconfig // import "github.com/docker/docker/runconfig"
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import (
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"fmt"
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"runtime"
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"github.com/docker/docker/api/types/container"
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"github.com/docker/docker/pkg/sysinfo"
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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 "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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err := validateNetContainerMode(c, hc)
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if err != nil {
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return err
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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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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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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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// validateQoS performs platform specific validation of the QoS settings
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func validateQoS(hc *container.HostConfig) error {
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if hc.IOMaximumBandwidth != 0 {
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return fmt.Errorf("Invalid QoS settings: %s does not support configuration of maximum bandwidth", runtime.GOOS)
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}
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if hc.IOMaximumIOps != 0 {
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return fmt.Errorf("Invalid QoS settings: %s does not support configuration of maximum IOPs", runtime.GOOS)
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}
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return nil
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}
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// validateResources performs platform specific validation of the resource settings
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// cpu-rt-runtime and cpu-rt-period can not be greater than their parent, cpu-rt-runtime requires sys_nice
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func validateResources(hc *container.HostConfig, si *sysinfo.SysInfo) error {
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if (hc.Resources.CPURealtimePeriod != 0 || hc.Resources.CPURealtimeRuntime != 0) && !si.CPURealtime {
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return fmt.Errorf("Your kernel does not support CPU real-time scheduler")
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}
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if hc.Resources.CPURealtimePeriod != 0 && hc.Resources.CPURealtimeRuntime != 0 && hc.Resources.CPURealtimeRuntime > hc.Resources.CPURealtimePeriod {
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return fmt.Errorf("cpu real-time runtime cannot be higher than cpu real-time period")
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}
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return nil
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}
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// validatePrivileged performs platform specific validation of the Privileged setting
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func validatePrivileged(_ *container.HostConfig) error {
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return nil
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}
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// validateReadonlyRootfs performs platform specific validation of the ReadonlyRootfs setting
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func validateReadonlyRootfs(_ *container.HostConfig) error {
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return nil
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}
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