// NewDriver returns a new native driver, called from NewDriver of execdriver.
func NewDriver(root, initPath string, options []string) (*Driver, error) {
meminfo, err := sysinfo.ReadMemInfo()
if err != nil {
return nil, err
}
if err := sysinfo.MkdirAll(root, 0700); err != nil {
return nil, err
}
if apparmor.IsEnabled() {
if err := installAppArmorProfile(); err != nil {
apparmorProfiles := []string{"docker-default"}
// Allow daemon to run if loading failed, but are active
// (possibly through another run, manually, or via system startup)
for _, policy := range apparmorProfiles {
if err := hasAppArmorProfileLoaded(policy); err != nil {
return nil, fmt.Errorf("AppArmor enabled on system but the %s profile could not be loaded.", policy)
}
}
}
}
// choose cgroup manager
// this makes sure there are no breaking changes to people
// who upgrade from versions without native.cgroupdriver opt
cgm := libcontainer.Cgroupfs
if systemd.UseSystemd() {
cgm = libcontainer.SystemdCgroups
}
// parse the options
for _, option := range options {
key, val, err := parsers.ParseKeyValueOpt(option)
if err != nil {
return nil, err
}
key = strings.ToLower(key)
switch key {
case "native.cgroupdriver":
// override the default if they set options
switch val {
case "systemd":
if systemd.UseSystemd() {
cgm = libcontainer.SystemdCgroups
} else {
// warn them that they chose the wrong driver
logrus.Warn("You cannot use systemd as native.cgroupdriver, using cgroupfs instead")
}
case "cgroupfs":
cgm = libcontainer.Cgroupfs
default:
return nil, fmt.Errorf("Unknown native.cgroupdriver given %q. try cgroupfs or systemd", val)
}
default:
return nil, fmt.Errorf("Unknown option %s\n", key)
}
}
f, err := libcontainer.New(
root,
cgm,
libcontainer.InitPath(reexec.Self(), DriverName),
)
if err != nil {
return nil, err
}
return &Driver{
root: root,
initPath: initPath,
activeContainers: make(map[string]libcontainer.Container),
machineMemory: meminfo.MemTotal,
factory: f,
}, nil
}
// NewDriver returns a new native driver, called from NewDriver of execdriver.
func NewDriver(root, initPath string, options []string) (*Driver, error) {
meminfo, err := sysinfo.ReadMemInfo()
if err != nil {
return nil, err
}
if err := sysinfo.MkdirAll(root, 0700); err != nil {
return nil, err
}
// choose cgroup manager
// this makes sure there are no breaking changes to people
// who upgrade from versions without native.cgroupdriver opt
cgm := libcontainer.Cgroupfs
if systemd.UseSystemd() {
cgm = libcontainer.SystemdCgroups
}
// parse the options
for _, option := range options {
key, val, err := parsers.ParseKeyValueOpt(option)
if err != nil {
return nil, err
}
key = strings.ToLower(key)
switch key {
case "native.cgroupdriver":
// override the default if they set options
switch val {
case "systemd":
if systemd.UseSystemd() {
cgm = libcontainer.SystemdCgroups
} else {
// warn them that they chose the wrong driver
logrus.Warn("You cannot use systemd as native.cgroupdriver, using cgroupfs instead")
}
case "cgroupfs":
cgm = libcontainer.Cgroupfs
default:
return nil, fmt.Errorf("Unknown native.cgroupdriver given %q. try cgroupfs or systemd", val)
}
default:
return nil, fmt.Errorf("Unknown option %s\n", key)
}
}
f, err := libcontainer.New(
root,
cgm,
libcontainer.InitPath(reexec.Self(), DriverName),
)
if err != nil {
return nil, err
}
return &Driver{
root: root,
initPath: initPath,
activeContainers: make(map[string]libcontainer.Container),
machineMemory: meminfo.MemTotal,
factory: f,
}, nil
}