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package main
import (
cdcgroups "github.com/containerd/cgroups/v3"
systemdDaemon "github.com/coreos/go-systemd/v22/daemon"
"github.com/docker/docker/daemon"
"github.com/docker/docker/daemon/config"
"github.com/docker/docker/pkg/sysinfo"
"github.com/pkg/errors"
)
// setPlatformOptions applies platform-specific CLI configuration options.
func setPlatformOptions(conf *config.Config) error {
if conf.RemappedRoot == "" {
return nil
}
containerdNamespace, containerdPluginNamespace, err := daemon.RemapContainerdNamespaces(conf)
if err != nil {
return err
}
conf.ContainerdNamespace = containerdNamespace
conf.ContainerdPluginNamespace = containerdPluginNamespace
return nil
}
// preNotifyReady sends a message to the host when the API is active, but before the daemon is
func preNotifyReady() error {
return nil
}
// notifyReady sends a message to the host when the server is ready to be used
func notifyReady() {
// Tell the init daemon we are accepting requests
go systemdDaemon.SdNotify(false, systemdDaemon.SdNotifyReady)
}
// notifyStopping sends a message to the host when the server is shutting down
func notifyStopping() {
go systemdDaemon.SdNotify(false, systemdDaemon.SdNotifyStopping)
}
func validateCPURealtimeOptions(cfg *config.Config) error {
if cfg.CPURealtimePeriod == 0 && cfg.CPURealtimeRuntime == 0 {
return nil
}
if cdcgroups.Mode() == cdcgroups.Unified {
return errors.New("daemon-scoped cpu-rt-period and cpu-rt-runtime are not implemented for cgroup v2")
}
if !sysinfo.New().CPURealtime {
return errors.New("daemon-scoped cpu-rt-period and cpu-rt-runtime are not supported by the kernel")
}
return nil
}
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