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// +build amd64
package lxc
import (
"fmt"
"syscall"
"github.com/docker/libcontainer/namespaces"
"github.com/docker/libcontainer/security/capabilities"
"github.com/docker/libcontainer/utils"
"github.com/dotcloud/docker/daemon/execdriver"
"github.com/dotcloud/docker/daemon/execdriver/native/template"
"github.com/dotcloud/docker/pkg/system"
)
func setHostname(hostname string) error {
return syscall.Sethostname([]byte(hostname))
}
func finalizeNamespace(args *execdriver.InitArgs) error {
if err := utils.CloseExecFrom(3); err != nil {
return err
}
// We use the native drivers default template so that things like caps are consistent
// across both drivers
container := template.New()
if !args.Privileged {
// drop capabilities in bounding set before changing user
if err := capabilities.DropBoundingSet(container.Capabilities); err != nil {
return fmt.Errorf("drop bounding set %s", err)
}
// preserve existing capabilities while we change users
if err := system.SetKeepCaps(); err != nil {
return fmt.Errorf("set keep caps %s", err)
}
}
if err := namespaces.SetupUser(args.User); err != nil {
return fmt.Errorf("setup user %s", err)
}
if !args.Privileged {
if err := system.ClearKeepCaps(); err != nil {
return fmt.Errorf("clear keep caps %s", err)
}
// drop all other capabilities
if err := capabilities.DropCapabilities(container.Capabilities); err != nil {
return fmt.Errorf("drop capabilities %s", err)
}
}
if err := setupWorkingDirectory(args); err != nil {
return err
}
return nil
}
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