moby/daemon/oci_utils.go

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package daemon // import "github.com/docker/docker/daemon"
import (
"github.com/docker/docker/container"
"github.com/opencontainers/runtime-spec/specs-go"
)
func setLinuxDomainname(c *container.Container, s *specs.Spec) {
// There isn't a field in the OCI for the NIS domainname, but luckily there
// is a sysctl which has an identical effect to setdomainname(2) so there's
// no explicit need for runtime support.
s.Linux.Sysctl = make(map[string]string)
if c.Config.Domainname != "" {
s.Linux.Sysctl["kernel.domainname"] = c.Config.Domainname
}
}