github.com/jwhonce/docker@v0.6.7-0.20190327063223-da823cf3a5a3/daemon/config/config_unix.go (about)

     1  // +build linux freebsd
     2  
     3  package config // import "github.com/docker/docker/daemon/config"
     4  
     5  import (
     6  	"fmt"
     7  
     8  	containertypes "github.com/docker/docker/api/types/container"
     9  	"github.com/docker/docker/opts"
    10  	"github.com/docker/go-units"
    11  )
    12  
    13  const (
    14  	// DefaultIpcMode is default for container's IpcMode, if not set otherwise
    15  	DefaultIpcMode = "private"
    16  )
    17  
    18  // Config defines the configuration of a docker daemon.
    19  // It includes json tags to deserialize configuration from a file
    20  // using the same names that the flags in the command line uses.
    21  type Config struct {
    22  	CommonConfig
    23  
    24  	// These fields are common to all unix platforms.
    25  	CommonUnixConfig
    26  	// Fields below here are platform specific.
    27  	CgroupParent         string                   `json:"cgroup-parent,omitempty"`
    28  	EnableSelinuxSupport bool                     `json:"selinux-enabled,omitempty"`
    29  	RemappedRoot         string                   `json:"userns-remap,omitempty"`
    30  	Ulimits              map[string]*units.Ulimit `json:"default-ulimits,omitempty"`
    31  	CPURealtimePeriod    int64                    `json:"cpu-rt-period,omitempty"`
    32  	CPURealtimeRuntime   int64                    `json:"cpu-rt-runtime,omitempty"`
    33  	OOMScoreAdjust       int                      `json:"oom-score-adjust,omitempty"`
    34  	Init                 bool                     `json:"init,omitempty"`
    35  	InitPath             string                   `json:"init-path,omitempty"`
    36  	SeccompProfile       string                   `json:"seccomp-profile,omitempty"`
    37  	ShmSize              opts.MemBytes            `json:"default-shm-size,omitempty"`
    38  	NoNewPrivileges      bool                     `json:"no-new-privileges,omitempty"`
    39  	IpcMode              string                   `json:"default-ipc-mode,omitempty"`
    40  	// ResolvConf is the path to the configuration of the host resolver
    41  	ResolvConf string `json:"resolv-conf,omitempty"`
    42  	Rootless   bool   `json:"rootless,omitempty"`
    43  }
    44  
    45  // BridgeConfig stores all the bridge driver specific
    46  // configuration.
    47  type BridgeConfig struct {
    48  	commonBridgeConfig
    49  
    50  	// These fields are common to all unix platforms.
    51  	commonUnixBridgeConfig
    52  
    53  	// Fields below here are platform specific.
    54  	EnableIPv6          bool   `json:"ipv6,omitempty"`
    55  	EnableIPTables      bool   `json:"iptables,omitempty"`
    56  	EnableIPForward     bool   `json:"ip-forward,omitempty"`
    57  	EnableIPMasq        bool   `json:"ip-masq,omitempty"`
    58  	EnableUserlandProxy bool   `json:"userland-proxy,omitempty"`
    59  	UserlandProxyPath   string `json:"userland-proxy-path,omitempty"`
    60  	FixedCIDRv6         string `json:"fixed-cidr-v6,omitempty"`
    61  }
    62  
    63  // IsSwarmCompatible defines if swarm mode can be enabled in this config
    64  func (conf *Config) IsSwarmCompatible() error {
    65  	if conf.ClusterStore != "" || conf.ClusterAdvertise != "" {
    66  		return fmt.Errorf("--cluster-store and --cluster-advertise daemon configurations are incompatible with swarm mode")
    67  	}
    68  	if conf.LiveRestoreEnabled {
    69  		return fmt.Errorf("--live-restore daemon configuration is incompatible with swarm mode")
    70  	}
    71  	return nil
    72  }
    73  
    74  func verifyDefaultIpcMode(mode string) error {
    75  	const hint = "Use \"shareable\" or \"private\"."
    76  
    77  	dm := containertypes.IpcMode(mode)
    78  	if !dm.Valid() {
    79  		return fmt.Errorf("Default IPC mode setting (%v) is invalid. "+hint, dm)
    80  	}
    81  	if dm != "" && !dm.IsPrivate() && !dm.IsShareable() {
    82  		return fmt.Errorf("IPC mode \"%v\" is not supported as default value. "+hint, dm)
    83  	}
    84  	return nil
    85  }
    86  
    87  // ValidatePlatformConfig checks if any platform-specific configuration settings are invalid.
    88  func (conf *Config) ValidatePlatformConfig() error {
    89  	return verifyDefaultIpcMode(conf.IpcMode)
    90  }
    91  
    92  // IsRootless returns conf.Rootless
    93  func (conf *Config) IsRootless() bool {
    94  	return conf.Rootless
    95  }