func (daemon *Daemon) populateCommand(c *Container, env []string) error {
var en *execdriver.Network
if !c.Config.NetworkDisabled {
en = &execdriver.Network{}
if !daemon.execDriver.SupportsHooks() || c.hostConfig.NetworkMode.IsHost() {
en.NamespacePath = c.NetworkSettings.SandboxKey
}
if c.hostConfig.NetworkMode.IsContainer() {
nc, err := daemon.getNetworkedContainer(c.ID, c.hostConfig.NetworkMode.ConnectedContainer())
if err != nil {
return err
}
en.ContainerID = nc.ID
}
}
ipc := &execdriver.Ipc{}
var err error
c.ShmPath, err = c.shmPath()
if err != nil {
return err
}
c.MqueuePath, err = c.mqueuePath()
if err != nil {
return err
}
if c.hostConfig.IpcMode.IsContainer() {
ic, err := daemon.getIpcContainer(c)
if err != nil {
return err
}
ipc.ContainerID = ic.ID
c.ShmPath = ic.ShmPath
c.MqueuePath = ic.MqueuePath
} else {
ipc.HostIpc = c.hostConfig.IpcMode.IsHost()
if ipc.HostIpc {
if _, err := os.Stat("/dev/shm"); err != nil {
return fmt.Errorf("/dev/shm is not mounted, but must be for --ipc=host")
}
if _, err := os.Stat("/dev/mqueue"); err != nil {
return fmt.Errorf("/dev/mqueue is not mounted, but must be for --ipc=host")
}
c.ShmPath = "/dev/shm"
c.MqueuePath = "/dev/mqueue"
}
}
pid := &execdriver.Pid{}
pid.HostPid = c.hostConfig.PidMode.IsHost()
uts := &execdriver.UTS{
HostUTS: c.hostConfig.UTSMode.IsHost(),
}
// Build lists of devices allowed and created within the container.
var userSpecifiedDevices []*configs.Device
for _, deviceMapping := range c.hostConfig.Devices {
devs, err := getDevicesFromPath(deviceMapping)
if err != nil {
return err
}
userSpecifiedDevices = append(userSpecifiedDevices, devs...)
}
allowedDevices := mergeDevices(configs.DefaultAllowedDevices, userSpecifiedDevices)
autoCreatedDevices := mergeDevices(configs.DefaultAutoCreatedDevices, userSpecifiedDevices)
var rlimits []*ulimit.Rlimit
ulimits := c.hostConfig.Ulimits
// Merge ulimits with daemon defaults
ulIdx := make(map[string]*ulimit.Ulimit)
for _, ul := range ulimits {
ulIdx[ul.Name] = ul
}
for name, ul := range daemon.configStore.Ulimits {
if _, exists := ulIdx[name]; !exists {
ulimits = append(ulimits, ul)
}
}
weightDevices, err := getBlkioWeightDevices(c.hostConfig)
if err != nil {
return err
}
for _, limit := range ulimits {
rl, err := limit.GetRlimit()
if err != nil {
return err
}
rlimits = append(rlimits, rl)
}
resources := &execdriver.Resources{
CommonResources: execdriver.CommonResources{
Memory: c.hostConfig.Memory,
MemoryReservation: c.hostConfig.MemoryReservation,
CPUShares: c.hostConfig.CPUShares,
BlkioWeight: c.hostConfig.BlkioWeight,
},
MemorySwap: c.hostConfig.MemorySwap,
KernelMemory: c.hostConfig.KernelMemory,
CpusetCpus: c.hostConfig.CpusetCpus,
CpusetMems: c.hostConfig.CpusetMems,
CPUPeriod: c.hostConfig.CPUPeriod,
CPUQuota: c.hostConfig.CPUQuota,
Rlimits: rlimits,
BlkioWeightDevice: weightDevices,
OomKillDisable: c.hostConfig.OomKillDisable,
MemorySwappiness: -1,
}
if c.hostConfig.MemorySwappiness != nil {
resources.MemorySwappiness = *c.hostConfig.MemorySwappiness
}
processConfig := execdriver.ProcessConfig{
CommonProcessConfig: execdriver.CommonProcessConfig{
Entrypoint: c.Path,
Arguments: c.Args,
Tty: c.Config.Tty,
},
Privileged: c.hostConfig.Privileged,
User: c.Config.User,
}
processConfig.SysProcAttr = &syscall.SysProcAttr{Setsid: true}
processConfig.Env = env
remappedRoot := &execdriver.User{}
rootUID, rootGID := daemon.GetRemappedUIDGID()
if rootUID != 0 {
remappedRoot.UID = rootUID
remappedRoot.GID = rootGID
}
uidMap, gidMap := daemon.GetUIDGIDMaps()
c.command = &execdriver.Command{
CommonCommand: execdriver.CommonCommand{
ID: c.ID,
InitPath: "/.dockerinit",
MountLabel: c.getMountLabel(),
Network: en,
ProcessConfig: processConfig,
ProcessLabel: c.getProcessLabel(),
Rootfs: c.rootfsPath(),
Resources: resources,
WorkingDir: c.Config.WorkingDir,
},
AllowedDevices: allowedDevices,
AppArmorProfile: c.AppArmorProfile,
AutoCreatedDevices: autoCreatedDevices,
CapAdd: c.hostConfig.CapAdd.Slice(),
CapDrop: c.hostConfig.CapDrop.Slice(),
CgroupParent: c.hostConfig.CgroupParent,
GIDMapping: gidMap,
GroupAdd: c.hostConfig.GroupAdd,
Ipc: ipc,
Pid: pid,
ReadonlyRootfs: c.hostConfig.ReadonlyRootfs,
RemappedRoot: remappedRoot,
UIDMapping: uidMap,
UTS: uts,
}
return nil
}
func populateCommand(c *Container, env []string) error {
var en *execdriver.Network
if !c.Config.NetworkDisabled {
en = &execdriver.Network{}
if !c.daemon.execDriver.SupportsHooks() || c.hostConfig.NetworkMode.IsHost() {
en.NamespacePath = c.NetworkSettings.SandboxKey
}
parts := strings.SplitN(string(c.hostConfig.NetworkMode), ":", 2)
if parts[0] == "container" {
nc, err := c.getNetworkedContainer()
if err != nil {
return err
}
en.ContainerID = nc.ID
}
}
ipc := &execdriver.Ipc{}
if c.hostConfig.IpcMode.IsContainer() {
ic, err := c.getIpcContainer()
if err != nil {
return err
}
ipc.ContainerID = ic.ID
} else {
ipc.HostIpc = c.hostConfig.IpcMode.IsHost()
}
pid := &execdriver.Pid{}
pid.HostPid = c.hostConfig.PidMode.IsHost()
uts := &execdriver.UTS{
HostUTS: c.hostConfig.UTSMode.IsHost(),
}
// Build lists of devices allowed and created within the container.
var userSpecifiedDevices []*configs.Device
for _, deviceMapping := range c.hostConfig.Devices {
devs, err := getDevicesFromPath(deviceMapping)
if err != nil {
return err
}
userSpecifiedDevices = append(userSpecifiedDevices, devs...)
}
allowedDevices := mergeDevices(configs.DefaultAllowedDevices, userSpecifiedDevices)
autoCreatedDevices := mergeDevices(configs.DefaultAutoCreatedDevices, userSpecifiedDevices)
// TODO: this can be removed after lxc-conf is fully deprecated
lxcConfig, err := mergeLxcConfIntoOptions(c.hostConfig)
if err != nil {
return err
}
var rlimits []*ulimit.Rlimit
ulimits := c.hostConfig.Ulimits
// Merge ulimits with daemon defaults
ulIdx := make(map[string]*ulimit.Ulimit)
for _, ul := range ulimits {
ulIdx[ul.Name] = ul
}
for name, ul := range c.daemon.configStore.Ulimits {
if _, exists := ulIdx[name]; !exists {
ulimits = append(ulimits, ul)
}
}
for _, limit := range ulimits {
rl, err := limit.GetRlimit()
if err != nil {
return err
}
rlimits = append(rlimits, rl)
}
resources := &execdriver.Resources{
Memory: c.hostConfig.Memory,
MemorySwap: c.hostConfig.MemorySwap,
KernelMemory: c.hostConfig.KernelMemory,
CPUShares: c.hostConfig.CPUShares,
CpusetCpus: c.hostConfig.CpusetCpus,
CpusetMems: c.hostConfig.CpusetMems,
CPUPeriod: c.hostConfig.CPUPeriod,
CPUQuota: c.hostConfig.CPUQuota,
BlkioWeight: c.hostConfig.BlkioWeight,
BlkioReadLimit: constructBlkioArgs(c.hostConfig.Binds, c.hostConfig.BlkioReadLimit),
Rlimits: rlimits,
OomKillDisable: c.hostConfig.OomKillDisable,
MemorySwappiness: -1,
}
if c.hostConfig.MemorySwappiness != nil {
resources.MemorySwappiness = *c.hostConfig.MemorySwappiness
}
processConfig := execdriver.ProcessConfig{
Privileged: c.hostConfig.Privileged,
Entrypoint: c.Path,
Arguments: c.Args,
Tty: c.Config.Tty,
User: c.Config.User,
}
processConfig.SysProcAttr = &syscall.SysProcAttr{Setsid: true}
processConfig.Env = env
c.command = &execdriver.Command{
ID: c.ID,
Rootfs: c.rootfsPath(),
ReadonlyRootfs: c.hostConfig.ReadonlyRootfs,
InitPath: "/.dockerinit",
WorkingDir: c.Config.WorkingDir,
Network: en,
Ipc: ipc,
Pid: pid,
UTS: uts,
Resources: resources,
AllowedDevices: allowedDevices,
AutoCreatedDevices: autoCreatedDevices,
CapAdd: c.hostConfig.CapAdd.Slice(),
CapDrop: c.hostConfig.CapDrop.Slice(),
GroupAdd: c.hostConfig.GroupAdd,
ProcessConfig: processConfig,
ProcessLabel: c.getProcessLabel(),
MountLabel: c.getMountLabel(),
LxcConfig: lxcConfig,
AppArmorProfile: c.AppArmorProfile,
CgroupParent: c.hostConfig.CgroupParent,
}
return nil
}
func populateCommand(c *Container, env []string) error {
var (
en *execdriver.Network
context = make(map[string][]string)
)
context["process_label"] = []string{c.GetProcessLabel()}
context["mount_label"] = []string{c.GetMountLabel()}
en = &execdriver.Network{
Mtu: c.daemon.config.Mtu,
Interface: nil,
}
parts := strings.SplitN(string(c.hostConfig.NetworkMode), ":", 2)
switch parts[0] {
case "none":
case "host":
en.HostNetworking = true
case "bridge", "": // empty string to support existing containers
if !c.Config.NetworkDisabled {
network := c.NetworkSettings
en.Interface = &execdriver.NetworkInterface{
Gateway: network.Gateway,
Bridge: network.Bridge,
IPAddress: network.IPAddress,
IPPrefixLen: network.IPPrefixLen,
}
}
case "container":
nc, err := c.getNetworkedContainer()
if err != nil {
return err
}
en.ContainerID = nc.ID
default:
return fmt.Errorf("invalid network mode: %s", c.hostConfig.NetworkMode)
}
// Build lists of devices allowed and created within the container.
userSpecifiedDevices := make([]*devices.Device, len(c.hostConfig.Devices))
for i, deviceMapping := range c.hostConfig.Devices {
device, err := devices.GetDevice(deviceMapping.PathOnHost, deviceMapping.CgroupPermissions)
device.Path = deviceMapping.PathInContainer
if err != nil {
return fmt.Errorf("error gathering device information while adding custom device %s", err)
}
userSpecifiedDevices[i] = device
}
allowedDevices := append(devices.DefaultAllowedDevices, userSpecifiedDevices...)
autoCreatedDevices := append(devices.DefaultAutoCreatedDevices, userSpecifiedDevices...)
// TODO: this can be removed after lxc-conf is fully deprecated
mergeLxcConfIntoOptions(c.hostConfig, context)
resources := &execdriver.Resources{
Memory: c.Config.Memory,
MemorySwap: c.Config.MemorySwap,
CpuShares: c.Config.CpuShares,
Cpuset: c.Config.Cpuset,
}
c.command = &execdriver.Command{
ID: c.ID,
Privileged: c.hostConfig.Privileged,
Rootfs: c.RootfsPath(),
InitPath: "/.dockerinit",
Entrypoint: c.Path,
Arguments: c.Args,
WorkingDir: c.Config.WorkingDir,
Network: en,
Tty: c.Config.Tty,
User: c.Config.User,
Config: context,
Resources: resources,
AllowedDevices: allowedDevices,
AutoCreatedDevices: autoCreatedDevices,
CapAdd: c.hostConfig.CapAdd,
CapDrop: c.hostConfig.CapDrop,
}
c.command.SysProcAttr = &syscall.SysProcAttr{Setsid: true}
c.command.Env = env
return nil
}
func (daemon *Daemon) populateCommand(c *container.Container, env []string) error {
var en *execdriver.Network
if !c.Config.NetworkDisabled {
en = &execdriver.Network{}
if !daemon.execDriver.SupportsHooks() || c.HostConfig.NetworkMode.IsHost() {
en.NamespacePath = c.NetworkSettings.SandboxKey
}
if c.HostConfig.NetworkMode.IsContainer() {
nc, err := daemon.getNetworkedContainer(c.ID, c.HostConfig.NetworkMode.ConnectedContainer())
if err != nil {
return err
}
en.ContainerID = nc.ID
}
}
ipc := &execdriver.Ipc{}
var err error
c.ShmPath, err = c.ShmResourcePath()
if err != nil {
return err
}
c.MqueuePath, err = c.MqueueResourcePath()
if err != nil {
return err
}
if c.HostConfig.IpcMode.IsContainer() {
ic, err := daemon.getIpcContainer(c)
if err != nil {
return err
}
ipc.ContainerID = ic.ID
c.ShmPath = ic.ShmPath
c.MqueuePath = ic.MqueuePath
} else {
ipc.HostIpc = c.HostConfig.IpcMode.IsHost()
if ipc.HostIpc {
if _, err := os.Stat("/dev/shm"); err != nil {
return fmt.Errorf("/dev/shm is not mounted, but must be for --ipc=host")
}
if _, err := os.Stat("/dev/mqueue"); err != nil {
return fmt.Errorf("/dev/mqueue is not mounted, but must be for --ipc=host")
}
c.ShmPath = "/dev/shm"
c.MqueuePath = "/dev/mqueue"
}
}
pid := &execdriver.Pid{}
pid.HostPid = c.HostConfig.PidMode.IsHost()
uts := &execdriver.UTS{
HostUTS: c.HostConfig.UTSMode.IsHost(),
}
// Build lists of devices allowed and created within the container.
var userSpecifiedDevices []*configs.Device
for _, deviceMapping := range c.HostConfig.Devices {
devs, err := getDevicesFromPath(deviceMapping)
if err != nil {
return err
}
userSpecifiedDevices = append(userSpecifiedDevices, devs...)
}
allowedDevices := mergeDevices(configs.DefaultAllowedDevices, userSpecifiedDevices)
autoCreatedDevices := mergeDevices(configs.DefaultAutoCreatedDevices, userSpecifiedDevices)
var rlimits []*units.Rlimit
ulimits := c.HostConfig.Ulimits
// Merge ulimits with daemon defaults
ulIdx := make(map[string]*units.Ulimit)
for _, ul := range ulimits {
ulIdx[ul.Name] = ul
}
for name, ul := range daemon.configStore.Ulimits {
if _, exists := ulIdx[name]; !exists {
ulimits = append(ulimits, ul)
}
}
weightDevices, err := getBlkioWeightDevices(c.HostConfig)
if err != nil {
return err
}
readBpsDevice, err := getBlkioReadBpsDevices(c.HostConfig)
if err != nil {
return err
}
writeBpsDevice, err := getBlkioWriteBpsDevices(c.HostConfig)
if err != nil {
return err
}
readIOpsDevice, err := getBlkioReadIOpsDevices(c.HostConfig)
if err != nil {
return err
}
writeIOpsDevice, err := getBlkioWriteIOpsDevices(c.HostConfig)
if err != nil {
return err
}
for _, limit := range ulimits {
rl, err := limit.GetRlimit()
if err != nil {
return err
}
rlimits = append(rlimits, rl)
}
resources := &execdriver.Resources{
CommonResources: execdriver.CommonResources{
Memory: c.HostConfig.Memory,
MemoryReservation: c.HostConfig.MemoryReservation,
CPUShares: c.HostConfig.CPUShares,
BlkioWeight: c.HostConfig.BlkioWeight,
},
MemorySwap: c.HostConfig.MemorySwap,
KernelMemory: c.HostConfig.KernelMemory,
CpusetCpus: c.HostConfig.CpusetCpus,
CpusetMems: c.HostConfig.CpusetMems,
CPUPeriod: c.HostConfig.CPUPeriod,
CPUQuota: c.HostConfig.CPUQuota,
Rlimits: rlimits,
BlkioWeightDevice: weightDevices,
BlkioThrottleReadBpsDevice: readBpsDevice,
BlkioThrottleWriteBpsDevice: writeBpsDevice,
BlkioThrottleReadIOpsDevice: readIOpsDevice,
BlkioThrottleWriteIOpsDevice: writeIOpsDevice,
OomKillDisable: *c.HostConfig.OomKillDisable,
MemorySwappiness: -1,
}
if c.HostConfig.MemorySwappiness != nil {
resources.MemorySwappiness = *c.HostConfig.MemorySwappiness
}
processConfig := execdriver.ProcessConfig{
CommonProcessConfig: execdriver.CommonProcessConfig{
Entrypoint: c.Path,
Arguments: c.Args,
Tty: c.Config.Tty,
},
Privileged: c.HostConfig.Privileged,
User: c.Config.User,
}
processConfig.SysProcAttr = &syscall.SysProcAttr{Setsid: true}
processConfig.Env = env
remappedRoot := &execdriver.User{}
rootUID, rootGID := daemon.GetRemappedUIDGID()
if rootUID != 0 {
remappedRoot.UID = rootUID
remappedRoot.GID = rootGID
}
uidMap, gidMap := daemon.GetUIDGIDMaps()
if !daemon.seccompEnabled {
if c.SeccompProfile != "" && c.SeccompProfile != "unconfined" {
return fmt.Errorf("Seccomp is not enabled in your kernel, cannot run a custom seccomp profile.")
}
logrus.Warn("Seccomp is not enabled in your kernel, running container without default profile.")
c.SeccompProfile = "unconfined"
}
defaultCgroupParent := "/docker"
if daemon.configStore.CgroupParent != "" {
defaultCgroupParent = daemon.configStore.CgroupParent
} else {
for _, option := range daemon.configStore.ExecOptions {
key, val, err := parsers.ParseKeyValueOpt(option)
if err != nil || !strings.EqualFold(key, "native.cgroupdriver") {
continue
}
if val == "systemd" {
defaultCgroupParent = "system.slice"
}
}
}
c.Command = &execdriver.Command{
CommonCommand: execdriver.CommonCommand{
ID: c.ID,
InitPath: "/.dockerinit",
MountLabel: c.GetMountLabel(),
Network: en,
ProcessConfig: processConfig,
ProcessLabel: c.GetProcessLabel(),
Rootfs: c.BaseFS,
Resources: resources,
WorkingDir: c.Config.WorkingDir,
},
AllowedDevices: allowedDevices,
AppArmorProfile: c.AppArmorProfile,
AutoCreatedDevices: autoCreatedDevices,
CapAdd: c.HostConfig.CapAdd.Slice(),
CapDrop: c.HostConfig.CapDrop.Slice(),
CgroupParent: defaultCgroupParent,
GIDMapping: gidMap,
GroupAdd: c.HostConfig.GroupAdd,
Ipc: ipc,
OomScoreAdj: c.HostConfig.OomScoreAdj,
Pid: pid,
ReadonlyRootfs: c.HostConfig.ReadonlyRootfs,
RemappedRoot: remappedRoot,
SeccompProfile: c.SeccompProfile,
UIDMapping: uidMap,
UTS: uts,
}
if c.HostConfig.CgroupParent != "" {
c.Command.CgroupParent = c.HostConfig.CgroupParent
}
return nil
}