mirror of
https://github.com/genuinetools/reg.git
synced 2024-08-21 14:20:23 -04:00
663 lines
22 KiB
Go
663 lines
22 KiB
Go
package daemon // import "github.com/docker/docker/daemon"
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import (
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"context"
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"fmt"
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"path/filepath"
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"strings"
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"github.com/Microsoft/hcsshim"
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"github.com/docker/docker/api/types"
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containertypes "github.com/docker/docker/api/types/container"
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"github.com/docker/docker/container"
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"github.com/docker/docker/daemon/config"
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"github.com/docker/docker/pkg/containerfs"
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"github.com/docker/docker/pkg/fileutils"
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"github.com/docker/docker/pkg/idtools"
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"github.com/docker/docker/pkg/parsers"
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"github.com/docker/docker/pkg/platform"
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"github.com/docker/docker/pkg/sysinfo"
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"github.com/docker/docker/pkg/system"
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"github.com/docker/docker/runconfig"
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"github.com/docker/libnetwork"
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nwconfig "github.com/docker/libnetwork/config"
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"github.com/docker/libnetwork/datastore"
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winlibnetwork "github.com/docker/libnetwork/drivers/windows"
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"github.com/docker/libnetwork/netlabel"
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"github.com/docker/libnetwork/options"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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"golang.org/x/sys/windows"
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"golang.org/x/sys/windows/svc/mgr"
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)
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const (
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defaultNetworkSpace = "172.16.0.0/12"
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platformSupported = true
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windowsMinCPUShares = 1
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windowsMaxCPUShares = 10000
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windowsMinCPUPercent = 1
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windowsMaxCPUPercent = 100
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)
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// Windows has no concept of an execution state directory. So use config.Root here.
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func getPluginExecRoot(root string) string {
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return filepath.Join(root, "plugins")
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}
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func (daemon *Daemon) parseSecurityOpt(container *container.Container, hostConfig *containertypes.HostConfig) error {
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return parseSecurityOpt(container, hostConfig)
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}
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func parseSecurityOpt(container *container.Container, config *containertypes.HostConfig) error {
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return nil
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}
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func setupInitLayer(idMappings *idtools.IDMappings) func(containerfs.ContainerFS) error {
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return nil
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}
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func checkKernel() error {
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return nil
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}
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func (daemon *Daemon) getCgroupDriver() string {
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return ""
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}
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// adaptContainerSettings is called during container creation to modify any
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// settings necessary in the HostConfig structure.
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func (daemon *Daemon) adaptContainerSettings(hostConfig *containertypes.HostConfig, adjustCPUShares bool) error {
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if hostConfig == nil {
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return nil
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}
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return nil
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}
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func verifyContainerResources(resources *containertypes.Resources, isHyperv bool) ([]string, error) {
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warnings := []string{}
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fixMemorySwappiness(resources)
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if !isHyperv {
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// The processor resource controls are mutually exclusive on
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// Windows Server Containers, the order of precedence is
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// CPUCount first, then CPUShares, and CPUPercent last.
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if resources.CPUCount > 0 {
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if resources.CPUShares > 0 {
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warnings = append(warnings, "Conflicting options: CPU count takes priority over CPU shares on Windows Server Containers. CPU shares discarded")
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logrus.Warn("Conflicting options: CPU count takes priority over CPU shares on Windows Server Containers. CPU shares discarded")
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resources.CPUShares = 0
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}
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if resources.CPUPercent > 0 {
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warnings = append(warnings, "Conflicting options: CPU count takes priority over CPU percent on Windows Server Containers. CPU percent discarded")
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logrus.Warn("Conflicting options: CPU count takes priority over CPU percent on Windows Server Containers. CPU percent discarded")
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resources.CPUPercent = 0
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}
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} else if resources.CPUShares > 0 {
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if resources.CPUPercent > 0 {
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warnings = append(warnings, "Conflicting options: CPU shares takes priority over CPU percent on Windows Server Containers. CPU percent discarded")
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logrus.Warn("Conflicting options: CPU shares takes priority over CPU percent on Windows Server Containers. CPU percent discarded")
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resources.CPUPercent = 0
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}
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}
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}
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if resources.CPUShares < 0 || resources.CPUShares > windowsMaxCPUShares {
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return warnings, fmt.Errorf("range of CPUShares is from %d to %d", windowsMinCPUShares, windowsMaxCPUShares)
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}
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if resources.CPUPercent < 0 || resources.CPUPercent > windowsMaxCPUPercent {
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return warnings, fmt.Errorf("range of CPUPercent is from %d to %d", windowsMinCPUPercent, windowsMaxCPUPercent)
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}
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if resources.CPUCount < 0 {
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return warnings, fmt.Errorf("invalid CPUCount: CPUCount cannot be negative")
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}
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if resources.NanoCPUs > 0 && resources.CPUPercent > 0 {
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return warnings, fmt.Errorf("conflicting options: Nano CPUs and CPU Percent cannot both be set")
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}
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if resources.NanoCPUs > 0 && resources.CPUShares > 0 {
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return warnings, fmt.Errorf("conflicting options: Nano CPUs and CPU Shares cannot both be set")
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}
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// The precision we could get is 0.01, because on Windows we have to convert to CPUPercent.
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// We don't set the lower limit here and it is up to the underlying platform (e.g., Windows) to return an error.
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if resources.NanoCPUs < 0 || resources.NanoCPUs > int64(sysinfo.NumCPU())*1e9 {
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return warnings, fmt.Errorf("range of CPUs is from 0.01 to %d.00, as there are only %d CPUs available", sysinfo.NumCPU(), sysinfo.NumCPU())
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}
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osv := system.GetOSVersion()
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if resources.NanoCPUs > 0 && isHyperv && osv.Build < 16175 {
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leftoverNanoCPUs := resources.NanoCPUs % 1e9
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if leftoverNanoCPUs != 0 && resources.NanoCPUs > 1e9 {
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resources.NanoCPUs = ((resources.NanoCPUs + 1e9/2) / 1e9) * 1e9
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warningString := fmt.Sprintf("Your current OS version does not support Hyper-V containers with NanoCPUs greater than 1000000000 but not divisible by 1000000000. NanoCPUs rounded to %d", resources.NanoCPUs)
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warnings = append(warnings, warningString)
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logrus.Warn(warningString)
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}
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}
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if len(resources.BlkioDeviceReadBps) > 0 {
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return warnings, fmt.Errorf("invalid option: Windows does not support BlkioDeviceReadBps")
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}
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if len(resources.BlkioDeviceReadIOps) > 0 {
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return warnings, fmt.Errorf("invalid option: Windows does not support BlkioDeviceReadIOps")
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}
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if len(resources.BlkioDeviceWriteBps) > 0 {
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return warnings, fmt.Errorf("invalid option: Windows does not support BlkioDeviceWriteBps")
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}
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if len(resources.BlkioDeviceWriteIOps) > 0 {
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return warnings, fmt.Errorf("invalid option: Windows does not support BlkioDeviceWriteIOps")
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}
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if resources.BlkioWeight > 0 {
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return warnings, fmt.Errorf("invalid option: Windows does not support BlkioWeight")
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}
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if len(resources.BlkioWeightDevice) > 0 {
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return warnings, fmt.Errorf("invalid option: Windows does not support BlkioWeightDevice")
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}
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if resources.CgroupParent != "" {
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return warnings, fmt.Errorf("invalid option: Windows does not support CgroupParent")
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}
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if resources.CPUPeriod != 0 {
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return warnings, fmt.Errorf("invalid option: Windows does not support CPUPeriod")
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}
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if resources.CpusetCpus != "" {
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return warnings, fmt.Errorf("invalid option: Windows does not support CpusetCpus")
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}
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if resources.CpusetMems != "" {
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return warnings, fmt.Errorf("invalid option: Windows does not support CpusetMems")
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}
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if resources.KernelMemory != 0 {
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return warnings, fmt.Errorf("invalid option: Windows does not support KernelMemory")
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}
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if resources.MemoryReservation != 0 {
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return warnings, fmt.Errorf("invalid option: Windows does not support MemoryReservation")
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}
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if resources.MemorySwap != 0 {
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return warnings, fmt.Errorf("invalid option: Windows does not support MemorySwap")
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}
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if resources.MemorySwappiness != nil {
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return warnings, fmt.Errorf("invalid option: Windows does not support MemorySwappiness")
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}
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if resources.OomKillDisable != nil && *resources.OomKillDisable {
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return warnings, fmt.Errorf("invalid option: Windows does not support OomKillDisable")
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}
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if resources.PidsLimit != 0 {
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return warnings, fmt.Errorf("invalid option: Windows does not support PidsLimit")
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}
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if len(resources.Ulimits) != 0 {
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return warnings, fmt.Errorf("invalid option: Windows does not support Ulimits")
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}
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return warnings, nil
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}
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// verifyPlatformContainerSettings performs platform-specific validation of the
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// hostconfig and config structures.
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func verifyPlatformContainerSettings(daemon *Daemon, hostConfig *containertypes.HostConfig, config *containertypes.Config, update bool) ([]string, error) {
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warnings := []string{}
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hyperv := daemon.runAsHyperVContainer(hostConfig)
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if !hyperv && system.IsWindowsClient() && !system.IsIoTCore() {
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// @engine maintainers. This block should not be removed. It partially enforces licensing
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// restrictions on Windows. Ping @jhowardmsft if there are concerns or PRs to change this.
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return warnings, fmt.Errorf("Windows client operating systems only support Hyper-V containers")
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}
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w, err := verifyContainerResources(&hostConfig.Resources, hyperv)
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warnings = append(warnings, w...)
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return warnings, err
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}
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// verifyDaemonSettings performs validation of daemon config struct
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func verifyDaemonSettings(config *config.Config) error {
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return nil
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}
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// checkSystem validates platform-specific requirements
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func checkSystem() error {
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// Validate the OS version. Note that docker.exe must be manifested for this
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// call to return the correct version.
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osv := system.GetOSVersion()
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if osv.MajorVersion < 10 {
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return fmt.Errorf("This version of Windows does not support the docker daemon")
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}
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if osv.Build < 14393 {
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return fmt.Errorf("The docker daemon requires build 14393 or later of Windows Server 2016 or Windows 10")
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}
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vmcompute := windows.NewLazySystemDLL("vmcompute.dll")
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if vmcompute.Load() != nil {
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return fmt.Errorf("failed to load vmcompute.dll, ensure that the Containers feature is installed")
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}
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// Ensure that the required Host Network Service and vmcompute services
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// are running. Docker will fail in unexpected ways if this is not present.
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var requiredServices = []string{"hns", "vmcompute"}
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if err := ensureServicesInstalled(requiredServices); err != nil {
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return errors.Wrap(err, "a required service is not installed, ensure the Containers feature is installed")
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}
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return nil
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}
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func ensureServicesInstalled(services []string) error {
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m, err := mgr.Connect()
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if err != nil {
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return err
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}
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defer m.Disconnect()
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for _, service := range services {
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s, err := m.OpenService(service)
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if err != nil {
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return errors.Wrapf(err, "failed to open service %s", service)
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}
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s.Close()
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}
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return nil
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}
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// configureKernelSecuritySupport configures and validate security support for the kernel
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func configureKernelSecuritySupport(config *config.Config, driverName string) error {
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return nil
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}
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// configureMaxThreads sets the Go runtime max threads threshold
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func configureMaxThreads(config *config.Config) error {
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return nil
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}
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func (daemon *Daemon) initNetworkController(config *config.Config, activeSandboxes map[string]interface{}) (libnetwork.NetworkController, error) {
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netOptions, err := daemon.networkOptions(config, nil, nil)
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if err != nil {
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return nil, err
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}
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controller, err := libnetwork.New(netOptions...)
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if err != nil {
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return nil, fmt.Errorf("error obtaining controller instance: %v", err)
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}
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hnsresponse, err := hcsshim.HNSListNetworkRequest("GET", "", "")
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if err != nil {
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return nil, err
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}
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// Remove networks not present in HNS
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for _, v := range controller.Networks() {
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options := v.Info().DriverOptions()
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hnsid := options[winlibnetwork.HNSID]
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found := false
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for _, v := range hnsresponse {
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if v.Id == hnsid {
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found = true
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break
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}
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}
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if !found {
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// global networks should not be deleted by local HNS
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if v.Info().Scope() != datastore.GlobalScope {
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err = v.Delete()
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if err != nil {
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logrus.Errorf("Error occurred when removing network %v", err)
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}
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}
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}
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}
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_, err = controller.NewNetwork("null", "none", "", libnetwork.NetworkOptionPersist(false))
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if err != nil {
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return nil, err
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}
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defaultNetworkExists := false
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if network, err := controller.NetworkByName(runconfig.DefaultDaemonNetworkMode().NetworkName()); err == nil {
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options := network.Info().DriverOptions()
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for _, v := range hnsresponse {
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if options[winlibnetwork.HNSID] == v.Id {
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defaultNetworkExists = true
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break
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}
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}
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}
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// discover and add HNS networks to windows
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// network that exist are removed and added again
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for _, v := range hnsresponse {
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if strings.ToLower(v.Type) == "private" {
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continue // workaround for HNS reporting unsupported networks
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}
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var n libnetwork.Network
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s := func(current libnetwork.Network) bool {
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options := current.Info().DriverOptions()
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if options[winlibnetwork.HNSID] == v.Id {
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n = current
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return true
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}
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return false
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}
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controller.WalkNetworks(s)
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drvOptions := make(map[string]string)
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if n != nil {
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// global networks should not be deleted by local HNS
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if n.Info().Scope() == datastore.GlobalScope {
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continue
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}
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v.Name = n.Name()
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// This will not cause network delete from HNS as the network
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// is not yet populated in the libnetwork windows driver
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// restore option if it existed before
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drvOptions = n.Info().DriverOptions()
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n.Delete()
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}
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netOption := map[string]string{
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winlibnetwork.NetworkName: v.Name,
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winlibnetwork.HNSID: v.Id,
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}
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// add persisted driver options
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for k, v := range drvOptions {
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if k != winlibnetwork.NetworkName && k != winlibnetwork.HNSID {
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netOption[k] = v
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}
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}
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v4Conf := []*libnetwork.IpamConf{}
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for _, subnet := range v.Subnets {
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ipamV4Conf := libnetwork.IpamConf{}
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ipamV4Conf.PreferredPool = subnet.AddressPrefix
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ipamV4Conf.Gateway = subnet.GatewayAddress
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v4Conf = append(v4Conf, &ipamV4Conf)
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}
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name := v.Name
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// If there is no nat network create one from the first NAT network
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// encountered if it doesn't already exist
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if !defaultNetworkExists &&
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runconfig.DefaultDaemonNetworkMode() == containertypes.NetworkMode(strings.ToLower(v.Type)) &&
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n == nil {
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name = runconfig.DefaultDaemonNetworkMode().NetworkName()
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defaultNetworkExists = true
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}
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v6Conf := []*libnetwork.IpamConf{}
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_, err := controller.NewNetwork(strings.ToLower(v.Type), name, "",
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libnetwork.NetworkOptionGeneric(options.Generic{
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netlabel.GenericData: netOption,
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}),
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libnetwork.NetworkOptionIpam("default", "", v4Conf, v6Conf, nil),
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)
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if err != nil {
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logrus.Errorf("Error occurred when creating network %v", err)
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}
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}
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if !config.DisableBridge {
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// Initialize default driver "bridge"
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if err := initBridgeDriver(controller, config); err != nil {
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return nil, err
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}
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}
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return controller, nil
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}
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func initBridgeDriver(controller libnetwork.NetworkController, config *config.Config) error {
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if _, err := controller.NetworkByName(runconfig.DefaultDaemonNetworkMode().NetworkName()); err == nil {
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return nil
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}
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netOption := map[string]string{
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winlibnetwork.NetworkName: runconfig.DefaultDaemonNetworkMode().NetworkName(),
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}
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var ipamOption libnetwork.NetworkOption
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var subnetPrefix string
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if config.BridgeConfig.FixedCIDR != "" {
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subnetPrefix = config.BridgeConfig.FixedCIDR
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} else {
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// TP5 doesn't support properly detecting subnet
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osv := system.GetOSVersion()
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if osv.Build < 14360 {
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subnetPrefix = defaultNetworkSpace
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}
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}
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if subnetPrefix != "" {
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ipamV4Conf := libnetwork.IpamConf{}
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ipamV4Conf.PreferredPool = subnetPrefix
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v4Conf := []*libnetwork.IpamConf{&ipamV4Conf}
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v6Conf := []*libnetwork.IpamConf{}
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ipamOption = libnetwork.NetworkOptionIpam("default", "", v4Conf, v6Conf, nil)
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}
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_, err := controller.NewNetwork(string(runconfig.DefaultDaemonNetworkMode()), runconfig.DefaultDaemonNetworkMode().NetworkName(), "",
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libnetwork.NetworkOptionGeneric(options.Generic{
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netlabel.GenericData: netOption,
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}),
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ipamOption,
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)
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if err != nil {
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return fmt.Errorf("Error creating default network: %v", err)
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}
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return nil
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}
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// registerLinks sets up links between containers and writes the
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// configuration out for persistence. As of Windows TP4, links are not supported.
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func (daemon *Daemon) registerLinks(container *container.Container, hostConfig *containertypes.HostConfig) error {
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return nil
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}
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func (daemon *Daemon) cleanupMountsByID(in string) error {
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return nil
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}
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func (daemon *Daemon) cleanupMounts() error {
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return nil
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}
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func setupRemappedRoot(config *config.Config) (*idtools.IDMappings, error) {
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return &idtools.IDMappings{}, nil
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}
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func setupDaemonRoot(config *config.Config, rootDir string, rootIDs idtools.IDPair) error {
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config.Root = rootDir
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// Create the root directory if it doesn't exists
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if err := system.MkdirAllWithACL(config.Root, 0, system.SddlAdministratorsLocalSystem); err != nil {
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return err
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}
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return nil
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}
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|
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// runasHyperVContainer returns true if we are going to run as a Hyper-V container
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func (daemon *Daemon) runAsHyperVContainer(hostConfig *containertypes.HostConfig) bool {
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if hostConfig.Isolation.IsDefault() {
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// Container is set to use the default, so take the default from the daemon configuration
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return daemon.defaultIsolation.IsHyperV()
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}
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// Container is requesting an isolation mode. Honour it.
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return hostConfig.Isolation.IsHyperV()
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}
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|
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// conditionalMountOnStart is a platform specific helper function during the
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// container start to call mount.
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func (daemon *Daemon) conditionalMountOnStart(container *container.Container) error {
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// Bail out now for Linux containers. We cannot mount the containers filesystem on the
|
|
// host as it is a non-Windows filesystem.
|
|
if system.LCOWSupported() && container.OS != "windows" {
|
|
return nil
|
|
}
|
|
|
|
// We do not mount if a Hyper-V container as it needs to be mounted inside the
|
|
// utility VM, not the host.
|
|
if !daemon.runAsHyperVContainer(container.HostConfig) {
|
|
return daemon.Mount(container)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// conditionalUnmountOnCleanup is a platform specific helper function called
|
|
// during the cleanup of a container to unmount.
|
|
func (daemon *Daemon) conditionalUnmountOnCleanup(container *container.Container) error {
|
|
// Bail out now for Linux containers
|
|
if system.LCOWSupported() && container.OS != "windows" {
|
|
return nil
|
|
}
|
|
|
|
// We do not unmount if a Hyper-V container
|
|
if !daemon.runAsHyperVContainer(container.HostConfig) {
|
|
return daemon.Unmount(container)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func driverOptions(config *config.Config) []nwconfig.Option {
|
|
return []nwconfig.Option{}
|
|
}
|
|
|
|
func (daemon *Daemon) stats(c *container.Container) (*types.StatsJSON, error) {
|
|
if !c.IsRunning() {
|
|
return nil, errNotRunning(c.ID)
|
|
}
|
|
|
|
// Obtain the stats from HCS via libcontainerd
|
|
stats, err := daemon.containerd.Stats(context.Background(), c.ID)
|
|
if err != nil {
|
|
if strings.Contains(err.Error(), "container not found") {
|
|
return nil, containerNotFound(c.ID)
|
|
}
|
|
return nil, err
|
|
}
|
|
|
|
// Start with an empty structure
|
|
s := &types.StatsJSON{}
|
|
s.Stats.Read = stats.Read
|
|
s.Stats.NumProcs = platform.NumProcs()
|
|
|
|
if stats.HCSStats != nil {
|
|
hcss := stats.HCSStats
|
|
// Populate the CPU/processor statistics
|
|
s.CPUStats = types.CPUStats{
|
|
CPUUsage: types.CPUUsage{
|
|
TotalUsage: hcss.Processor.TotalRuntime100ns,
|
|
UsageInKernelmode: hcss.Processor.RuntimeKernel100ns,
|
|
UsageInUsermode: hcss.Processor.RuntimeKernel100ns,
|
|
},
|
|
}
|
|
|
|
// Populate the memory statistics
|
|
s.MemoryStats = types.MemoryStats{
|
|
Commit: hcss.Memory.UsageCommitBytes,
|
|
CommitPeak: hcss.Memory.UsageCommitPeakBytes,
|
|
PrivateWorkingSet: hcss.Memory.UsagePrivateWorkingSetBytes,
|
|
}
|
|
|
|
// Populate the storage statistics
|
|
s.StorageStats = types.StorageStats{
|
|
ReadCountNormalized: hcss.Storage.ReadCountNormalized,
|
|
ReadSizeBytes: hcss.Storage.ReadSizeBytes,
|
|
WriteCountNormalized: hcss.Storage.WriteCountNormalized,
|
|
WriteSizeBytes: hcss.Storage.WriteSizeBytes,
|
|
}
|
|
|
|
// Populate the network statistics
|
|
s.Networks = make(map[string]types.NetworkStats)
|
|
for _, nstats := range hcss.Network {
|
|
s.Networks[nstats.EndpointId] = types.NetworkStats{
|
|
RxBytes: nstats.BytesReceived,
|
|
RxPackets: nstats.PacketsReceived,
|
|
RxDropped: nstats.DroppedPacketsIncoming,
|
|
TxBytes: nstats.BytesSent,
|
|
TxPackets: nstats.PacketsSent,
|
|
TxDropped: nstats.DroppedPacketsOutgoing,
|
|
}
|
|
}
|
|
}
|
|
return s, nil
|
|
}
|
|
|
|
// setDefaultIsolation determine the default isolation mode for the
|
|
// daemon to run in. This is only applicable on Windows
|
|
func (daemon *Daemon) setDefaultIsolation() error {
|
|
daemon.defaultIsolation = containertypes.Isolation("process")
|
|
// On client SKUs, default to Hyper-V. Note that IoT reports as a client SKU
|
|
// but it should not be treated as such.
|
|
if system.IsWindowsClient() && !system.IsIoTCore() {
|
|
daemon.defaultIsolation = containertypes.Isolation("hyperv")
|
|
}
|
|
for _, option := range daemon.configStore.ExecOptions {
|
|
key, val, err := parsers.ParseKeyValueOpt(option)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
key = strings.ToLower(key)
|
|
switch key {
|
|
|
|
case "isolation":
|
|
if !containertypes.Isolation(val).IsValid() {
|
|
return fmt.Errorf("Invalid exec-opt value for 'isolation':'%s'", val)
|
|
}
|
|
if containertypes.Isolation(val).IsHyperV() {
|
|
daemon.defaultIsolation = containertypes.Isolation("hyperv")
|
|
}
|
|
if containertypes.Isolation(val).IsProcess() {
|
|
if system.IsWindowsClient() && !system.IsIoTCore() {
|
|
// @engine maintainers. This block should not be removed. It partially enforces licensing
|
|
// restrictions on Windows. Ping @jhowardmsft if there are concerns or PRs to change this.
|
|
return fmt.Errorf("Windows client operating systems only support Hyper-V containers")
|
|
}
|
|
daemon.defaultIsolation = containertypes.Isolation("process")
|
|
}
|
|
default:
|
|
return fmt.Errorf("Unrecognised exec-opt '%s'\n", key)
|
|
}
|
|
}
|
|
|
|
logrus.Infof("Windows default isolation mode: %s", daemon.defaultIsolation)
|
|
return nil
|
|
}
|
|
|
|
func setupDaemonProcess(config *config.Config) error {
|
|
return nil
|
|
}
|
|
|
|
// verifyVolumesInfo is a no-op on windows.
|
|
// This is called during daemon initialization to migrate volumes from pre-1.7.
|
|
// volumes were not supported on windows pre-1.7
|
|
func (daemon *Daemon) verifyVolumesInfo(container *container.Container) error {
|
|
return nil
|
|
}
|
|
|
|
func (daemon *Daemon) setupSeccompProfile() error {
|
|
return nil
|
|
}
|
|
|
|
func getRealPath(path string) (string, error) {
|
|
if system.IsIoTCore() {
|
|
// Due to https://github.com/golang/go/issues/20506, path expansion
|
|
// does not work correctly on the default IoT Core configuration.
|
|
// TODO @darrenstahlmsft remove this once golang/go/20506 is fixed
|
|
return path, nil
|
|
}
|
|
return fileutils.ReadSymlinkedDirectory(path)
|
|
}
|
|
|
|
func (daemon *Daemon) loadRuntimes() error {
|
|
return nil
|
|
}
|
|
|
|
func (daemon *Daemon) initRuntimes(_ map[string]types.Runtime) error {
|
|
return nil
|
|
}
|