func setupNetwork(env process.Env) error {
_, ipNet, err := net.ParseCIDR(env["network_cidr"])
if err != nil {
return fmt.Errorf("initc: failed to parse network CIDR: %s", err)
}
mtu, err := strconv.ParseInt(env["container_iface_mtu"], 0, 64)
if err != nil {
return fmt.Errorf("initc: failed to parse container interface MTU: %s", err)
}
logger, _ := cf_lager.New("hook")
configurer := network.NewConfigurer(logger.Session("initc: hook.CHILD_AFTER_PIVOT"))
err = configurer.ConfigureContainer(&network.ContainerConfig{
Hostname: env["id"],
ContainerIntf: env["network_container_iface"],
ContainerIP: net.ParseIP(env["network_container_ip"]),
GatewayIP: net.ParseIP(env["network_host_ip"]),
Subnet: ipNet,
Mtu: int(mtu),
})
if err != nil {
return fmt.Errorf("initc: failed to configure container network: %s", err)
}
return nil
}
func main() {
cf_lager.AddFlags(flag.CommandLine)
flag.Parse()
logger, _ := cf_lager.New("hook")
oldWd, err := os.Getwd()
if err != nil {
panic(err)
}
cwd := path.Dir(os.Args[0])
os.Chdir(cwd)
defer os.Chdir(oldWd)
config, err := process.EnvFromFile("../etc/config")
if err != nil {
panic(fmt.Sprintf("error reading config file in hook: %s", err))
}
runner := &logging.Runner{linux_command_runner.New(), logger}
configurer := network.NewConfigurer(logger.Session("linux_backend: hook.CHILD_AFTER_PIVOT"))
linux_backend.RegisterHooks(hook.DefaultHookSet, runner, config, configurer)
hook.Main(os.Args[1:])
}