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Diffstat (limited to 'libpod/container_config.go')
| -rw-r--r-- | libpod/container_config.go | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/libpod/container_config.go b/libpod/container_config.go new file mode 100644 index 000000000..301b867fc --- /dev/null +++ b/libpod/container_config.go @@ -0,0 +1,256 @@ +package libpod + +import ( + "net" + "time" + + "github.com/containers/image/v5/manifest" + "github.com/containers/podman/v2/pkg/namespaces" + "github.com/containers/storage" + "github.com/cri-o/ocicni/pkg/ocicni" + spec "github.com/opencontainers/runtime-spec/specs-go" +) + +// ContainerConfig contains all information that was used to create the +// container. It may not be changed once created. +// It is stored, read-only, on disk +type ContainerConfig struct { + Spec *spec.Spec `json:"spec"` + + ID string `json:"id"` + + Name string `json:"name"` + + // Full ID of the pood the container belongs to + Pod string `json:"pod,omitempty"` + + // Namespace the container is in + Namespace string `json:"namespace,omitempty"` + + // ID of this container's lock + LockID uint32 `json:"lockID"` + + // CreateCommand is the full command plus arguments of the process the + // container has been created with. + CreateCommand []string `json:"CreateCommand,omitempty"` + + // RawImageName is the raw and unprocessed name of the image when creating + // the container (as specified by the user). May or may not be set. One + // use case to store this data are auto-updates where we need the _exact_ + // name and not some normalized instance of it. + RawImageName string `json:"RawImageName,omitempty"` + + // UID/GID mappings used by the storage + IDMappings storage.IDMappingOptions `json:"idMappingsOptions,omitempty"` + + // IDs of dependency containers. + // These containers must be started before this container is started. + Dependencies []string + + // embedded sub-configs + ContainerRootFSConfig + ContainerSecurityConfig + ContainerNameSpaceConfig + ContainerNetworkConfig + ContainerImageConfig + ContainerMiscConfig +} + +// ContainerRootFSConfig is an embedded sub-config providing config info +// about the container's root fs. +type ContainerRootFSConfig struct { + RootfsImageID string `json:"rootfsImageID,omitempty"` + RootfsImageName string `json:"rootfsImageName,omitempty"` + // Rootfs to use for the container, this conflicts with RootfsImageID + Rootfs string `json:"rootfs,omitempty"` + // Src path to be mounted on /dev/shm in container. + ShmDir string `json:"ShmDir,omitempty"` + // Size of the container's SHM. + ShmSize int64 `json:"shmSize"` + // Static directory for container content that will persist across + // reboot. + StaticDir string `json:"staticDir"` + // Mounts list contains all additional mounts into the container rootfs. + // These include the SHM mount. + // These must be unmounted before the container's rootfs is unmounted. + Mounts []string `json:"mounts,omitempty"` + // NamedVolumes lists the named volumes to mount into the container. + NamedVolumes []*ContainerNamedVolume `json:"namedVolumes,omitempty"` + // OverlayVolumes lists the overlay volumes to mount into the container. + OverlayVolumes []*ContainerOverlayVolume `json:"overlayVolumes,omitempty"` +} + +// ContainerSecurityConfig is an embedded sub-config providing security configuration +// to the container. +type ContainerSecurityConfig struct { + // Whether the container is privileged + Privileged bool `json:"privileged"` + // SELinux process label for container + ProcessLabel string `json:"ProcessLabel,omitempty"` + // SELinux mount label for root filesystem + MountLabel string `json:"MountLabel,omitempty"` + // LabelOpts are options passed in by the user to setup SELinux labels + LabelOpts []string `json:"labelopts,omitempty"` + // User and group to use in the container + // Can be specified by name or UID/GID + User string `json:"user,omitempty"` + // Additional groups to add + Groups []string `json:"groups,omitempty"` + // AddCurrentUserPasswdEntry indicates that the current user passwd entry + // should be added to the /etc/passwd within the container + AddCurrentUserPasswdEntry bool `json:"addCurrentUserPasswdEntry,omitempty"` +} + +// ContainerNameSpaceConfig is an embedded sub-config providing +// namespace configuration to the container. +type ContainerNameSpaceConfig struct { + // IDs of container to share namespaces with + // NetNsCtr conflicts with the CreateNetNS bool + // These containers are considered dependencies of the given container + // They must be started before the given container is started + IPCNsCtr string `json:"ipcNsCtr,omitempty"` + MountNsCtr string `json:"mountNsCtr,omitempty"` + NetNsCtr string `json:"netNsCtr,omitempty"` + PIDNsCtr string `json:"pidNsCtr,omitempty"` + UserNsCtr string `json:"userNsCtr,omitempty"` + UTSNsCtr string `json:"utsNsCtr,omitempty"` + CgroupNsCtr string `json:"cgroupNsCtr,omitempty"` +} + +// ContainerNetworkConfig is an embedded sub-config providing network configuration +// to the container. +type ContainerNetworkConfig struct { + // CreateNetNS indicates that libpod should create and configure a new + // network namespace for the container. + // This cannot be set if NetNsCtr is also set. + CreateNetNS bool `json:"createNetNS"` + // StaticIP is a static IP to request for the container. + // This cannot be set unless CreateNetNS is set. + // If not set, the container will be dynamically assigned an IP by CNI. + StaticIP net.IP `json:"staticIP"` + // StaticMAC is a static MAC to request for the container. + // This cannot be set unless CreateNetNS is set. + // If not set, the container will be dynamically assigned a MAC by CNI. + StaticMAC net.HardwareAddr `json:"staticMAC"` + // PortMappings are the ports forwarded to the container's network + // namespace + // These are not used unless CreateNetNS is true + PortMappings []ocicni.PortMapping `json:"portMappings,omitempty"` + // UseImageResolvConf indicates that resolv.conf should not be + // bind-mounted inside the container. + // Conflicts with DNSServer, DNSSearch, DNSOption. + UseImageResolvConf bool + // DNS servers to use in container resolv.conf + // Will override servers in host resolv if set + DNSServer []net.IP `json:"dnsServer,omitempty"` + // DNS Search domains to use in container resolv.conf + // Will override search domains in host resolv if set + DNSSearch []string `json:"dnsSearch,omitempty"` + // DNS options to be set in container resolv.conf + // With override options in host resolv if set + DNSOption []string `json:"dnsOption,omitempty"` + // UseImageHosts indicates that /etc/hosts should not be + // bind-mounted inside the container. + // Conflicts with HostAdd. + UseImageHosts bool + // Hosts to add in container + // Will be appended to host's host file + HostAdd []string `json:"hostsAdd,omitempty"` + // Network names (CNI) to add container to. Empty to use default network. + Networks []string `json:"networks,omitempty"` + // Network mode specified for the default network. + NetMode namespaces.NetworkMode `json:"networkMode,omitempty"` + // NetworkOptions are additional options for each network + NetworkOptions map[string][]string `json:"network_options,omitempty"` +} + +// ContainerImageConfig is an embedded sub-config providing image configuration +// to the container. +type ContainerImageConfig struct { + // UserVolumes contains user-added volume mounts in the container. + // These will not be added to the container's spec, as it is assumed + // they are already present in the spec given to Libpod. Instead, it is + // used when committing containers to generate the VOLUMES field of the + // image that is created, and for triggering some OCI hooks which do not + // fire unless user-added volume mounts are present. + UserVolumes []string `json:"userVolumes,omitempty"` + // Entrypoint is the container's entrypoint. + // It is not used in spec generation, but will be used when the + // container is committed to populate the entrypoint of the new image. + Entrypoint []string `json:"entrypoint,omitempty"` + // Command is the container's command. + // It is not used in spec generation, but will be used when the + // container is committed to populate the command of the new image. + Command []string `json:"command,omitempty"` +} + +// ContainerMiscConfig is an embedded sub-config providing misc configuration +// to the container. +type ContainerMiscConfig struct { + // Whether to keep container STDIN open + Stdin bool `json:"stdin,omitempty"` + // Labels is a set of key-value pairs providing additional information + // about a container + Labels map[string]string `json:"labels,omitempty"` + // StopSignal is the signal that will be used to stop the container + StopSignal uint `json:"stopSignal,omitempty"` + // StopTimeout is the signal that will be used to stop the container + StopTimeout uint `json:"stopTimeout,omitempty"` + // Time container was created + CreatedTime time.Time `json:"createdTime"` + // NoCgroups indicates that the container will not create CGroups. It is + // incompatible with CgroupParent. Deprecated in favor of CgroupsMode. + NoCgroups bool `json:"noCgroups,omitempty"` + // CgroupsMode indicates how the container will create cgroups + // (disabled, no-conmon, enabled). It supersedes NoCgroups. + CgroupsMode string `json:"cgroupsMode,omitempty"` + // Cgroup parent of the container + CgroupParent string `json:"cgroupParent"` + // LogPath log location + LogPath string `json:"logPath"` + // LogTag is the tag used for logging + LogTag string `json:"logTag"` + // LogDriver driver for logs + LogDriver string `json:"logDriver"` + // File containing the conmon PID + ConmonPidFile string `json:"conmonPidFile,omitempty"` + // RestartPolicy indicates what action the container will take upon + // exiting naturally. + // Allowed options are "no" (take no action), "on-failure" (restart on + // non-zero exit code, up an a maximum of RestartRetries times), + // and "always" (always restart the container on any exit code). + // The empty string is treated as the default ("no") + RestartPolicy string `json:"restart_policy,omitempty"` + // RestartRetries indicates the number of attempts that will be made to + // restart the container. Used only if RestartPolicy is set to + // "on-failure". + RestartRetries uint `json:"restart_retries,omitempty"` + // TODO log options for log drivers + // PostConfigureNetNS needed when a user namespace is created by an OCI runtime + // if the network namespace is created before the user namespace it will be + // owned by the wrong user namespace. + PostConfigureNetNS bool `json:"postConfigureNetNS"` + // OCIRuntime used to create the container + OCIRuntime string `json:"runtime,omitempty"` + // ExitCommand is the container's exit command. + // This Command will be executed when the container exits + ExitCommand []string `json:"exitCommand,omitempty"` + // IsInfra is a bool indicating whether this container is an infra container used for + // sharing kernel namespaces in a pod + IsInfra bool `json:"pause"` + // SdNotifyMode tells libpod what to do with a NOTIFY_SOCKET if passed + SdNotifyMode string `json:"sdnotifyMode,omitempty"` + // Systemd tells libpod to setup the container in systemd mode + Systemd bool `json:"systemd"` + // HealthCheckConfig has the health check command and related timings + HealthCheckConfig *manifest.Schema2HealthConfig `json:"healthcheck"` + // PreserveFDs is a number of additional file descriptors (in addition + // to 0, 1, 2) that will be passed to the executed process. The total FDs + // passed will be 3 + PreserveFDs. + PreserveFDs uint `json:"preserveFds,omitempty"` + // Timezone is the timezone inside the container. + // Local means it has the same timezone as the host machine + Timezone string `json:"timezone,omitempty"` + // Umask is the umask inside the container. + Umask string `json:"umask,omitempty"` +} |