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moby--moby/daemonconfig/config.go
Dan Walsh b7942ec2ca This patch reworks the SELinux patch to be only run on demand by the daemon
Added --selinux-enable switch to daemon to enable SELinux labeling.

The daemon will now generate a new unique random SELinux label when a
container starts, and remove it when the container is removed.   The MCS
labels will be stored in the daemon memory.  The labels of containers will
be stored in the container.json file.

When the daemon restarts on boot or if done by an admin, it will read all containers json files and reserve the MCS labels.

A potential problem would be conflicts if you setup thousands of containers,
current scheme would handle ~500,000 containers.

Docker-DCO-1.1-Signed-off-by: Dan Walsh <dwalsh@redhat.com> (github: rhatdan)
Docker-DCO-1.1-Signed-off-by: Dan Walsh <dwalsh@redhat.com> (github: crosbymichael)
2014-04-29 03:40:05 -07:00

73 lines
2.3 KiB
Go

package daemonconfig
import (
"github.com/dotcloud/docker/daemon/networkdriver"
"github.com/dotcloud/docker/engine"
"net"
)
const (
defaultNetworkMtu = 1500
DisableNetworkBridge = "none"
)
// FIXME: separate runtime configuration from http api configuration
type Config struct {
Pidfile string
Root string
AutoRestart bool
Dns []string
DnsSearch []string
EnableIptables bool
EnableIpForward bool
DefaultIp net.IP
BridgeIface string
BridgeIP string
InterContainerCommunication bool
GraphDriver string
ExecDriver string
Mtu int
DisableNetwork bool
EnableSelinuxSupport bool
Context map[string][]string
}
// ConfigFromJob creates and returns a new DaemonConfig object
// by parsing the contents of a job's environment.
func ConfigFromJob(job *engine.Job) *Config {
config := &Config{
Pidfile: job.Getenv("Pidfile"),
Root: job.Getenv("Root"),
AutoRestart: job.GetenvBool("AutoRestart"),
EnableIptables: job.GetenvBool("EnableIptables"),
EnableIpForward: job.GetenvBool("EnableIpForward"),
BridgeIP: job.Getenv("BridgeIP"),
BridgeIface: job.Getenv("BridgeIface"),
DefaultIp: net.ParseIP(job.Getenv("DefaultIp")),
InterContainerCommunication: job.GetenvBool("InterContainerCommunication"),
GraphDriver: job.Getenv("GraphDriver"),
ExecDriver: job.Getenv("ExecDriver"),
EnableSelinuxSupport: job.GetenvBool("EnableSelinuxSupport"),
}
if dns := job.GetenvList("Dns"); dns != nil {
config.Dns = dns
}
if dnsSearch := job.GetenvList("DnsSearch"); dnsSearch != nil {
config.DnsSearch = dnsSearch
}
if mtu := job.GetenvInt("Mtu"); mtu != 0 {
config.Mtu = mtu
} else {
config.Mtu = GetDefaultNetworkMtu()
}
config.DisableNetwork = config.BridgeIface == DisableNetworkBridge
return config
}
func GetDefaultNetworkMtu() int {
if iface, err := networkdriver.GetDefaultRouteIface(); err == nil {
return iface.MTU
}
return defaultNetworkMtu
}