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|
//go:build linux || freebsd
// +build linux freebsd
package config // import "github.com/docker/docker/daemon/config"
import (
"fmt"
containertypes "github.com/docker/docker/api/types/container"
"github.com/docker/docker/opts"
units "github.com/docker/go-units"
)
const (
// DefaultIpcMode is default for container's IpcMode, if not set otherwise
DefaultIpcMode = "private"
)
// Config defines the configuration of a docker daemon.
// It includes json tags to deserialize configuration from a file
// using the same names that the flags in the command line uses.
type Config struct {
CommonConfig
// These fields are common to all unix platforms.
CommonUnixConfig
// Fields below here are platform specific.
CgroupParent string `json:"cgroup-parent,omitempty"`
EnableSelinuxSupport bool `json:"selinux-enabled,omitempty"`
RemappedRoot string `json:"userns-remap,omitempty"`
Ulimits map[string]*units.Ulimit `json:"default-ulimits,omitempty"`
CPURealtimePeriod int64 `json:"cpu-rt-period,omitempty"`
CPURealtimeRuntime int64 `json:"cpu-rt-runtime,omitempty"`
OOMScoreAdjust int `json:"oom-score-adjust,omitempty"`
Init bool `json:"init,omitempty"`
InitPath string `json:"init-path,omitempty"`
SeccompProfile string `json:"seccomp-profile,omitempty"`
ShmSize opts.MemBytes `json:"default-shm-size,omitempty"`
NoNewPrivileges bool `json:"no-new-privileges,omitempty"`
IpcMode string `json:"default-ipc-mode,omitempty"`
CgroupNamespaceMode string `json:"default-cgroupns-mode,omitempty"`
// ResolvConf is the path to the configuration of the host resolver
ResolvConf string `json:"resolv-conf,omitempty"`
Rootless bool `json:"rootless,omitempty"`
}
// BridgeConfig stores all the bridge driver specific
// configuration.
type BridgeConfig struct {
commonBridgeConfig
// These fields are common to all unix platforms.
commonUnixBridgeConfig
// Fields below here are platform specific.
EnableIPv6 bool `json:"ipv6,omitempty"`
EnableIPTables bool `json:"iptables,omitempty"`
EnableIP6Tables bool `json:"ip6tables,omitempty"`
EnableIPForward bool `json:"ip-forward,omitempty"`
EnableIPMasq bool `json:"ip-masq,omitempty"`
EnableUserlandProxy bool `json:"userland-proxy,omitempty"`
UserlandProxyPath string `json:"userland-proxy-path,omitempty"`
FixedCIDRv6 string `json:"fixed-cidr-v6,omitempty"`
}
// IsSwarmCompatible defines if swarm mode can be enabled in this config
func (conf *Config) IsSwarmCompatible() error {
if conf.ClusterStore != "" || conf.ClusterAdvertise != "" {
return fmt.Errorf("--cluster-store and --cluster-advertise daemon configurations are incompatible with swarm mode")
}
if conf.LiveRestoreEnabled {
return fmt.Errorf("--live-restore daemon configuration is incompatible with swarm mode")
}
return nil
}
func verifyDefaultIpcMode(mode string) error {
const hint = `use "shareable" or "private"`
dm := containertypes.IpcMode(mode)
if !dm.Valid() {
return fmt.Errorf("default IPC mode setting (%v) is invalid; "+hint, dm)
}
if dm != "" && !dm.IsPrivate() && !dm.IsShareable() {
return fmt.Errorf(`IPC mode "%v" is not supported as default value; `+hint, dm)
}
return nil
}
func verifyDefaultCgroupNsMode(mode string) error {
cm := containertypes.CgroupnsMode(mode)
if !cm.Valid() {
return fmt.Errorf(`default cgroup namespace mode (%v) is invalid; use "host" or "private"`, cm)
}
return nil
}
// ValidatePlatformConfig checks if any platform-specific configuration settings are invalid.
func (conf *Config) ValidatePlatformConfig() error {
if err := verifyDefaultIpcMode(conf.IpcMode); err != nil {
return err
}
return verifyDefaultCgroupNsMode(conf.CgroupNamespaceMode)
}
// IsRootless returns conf.Rootless
func (conf *Config) IsRootless() bool {
return conf.Rootless
}
|
