package specgen import ( "errors" "net" "syscall" "github.com/containers/image/v5/manifest" "github.com/containers/storage" spec "github.com/opencontainers/runtime-spec/specs-go" ) // LogConfig describes the logging characteristics for a container type LogConfig struct { // LogDriver is the container's log driver. // Optional. Driver string `json:"driver,omitempty"` // LogPath is the path the container's logs will be stored at. // Only available if LogDriver is set to "json-file" or "k8s-file". // Optional. Path string `json:"path,omitempty"` // A set of options to accompany the log driver. // Optional. Options map[string]string `json:"options,omitempty"` } // ContainerBasicConfig contains the basic parts of a container. type ContainerBasicConfig struct { // Name is the name the container will be given. // If no name is provided, one will be randomly generated. // Optional. Name string `json:"name,omitempty"` // Pod is the ID of the pod the container will join. // Optional. Pod string `json:"pod,omitempty"` // Entrypoint is the container's entrypoint. // If not given and Image is specified, this will be populated by the // image's configuration. // Optional. Entrypoint []string `json:"entrypoint,omitempty"` // Command is the container's command. // If not given and Image is specified, this will be populated by the // image's configuration. // Optional. Command []string `json:"command,omitempty"` // Env is a set of environment variables that will be set in the // container. // Optional. Env map[string]string `json:"env,omitempty"` // Terminal is whether the container will create a PTY. // Optional. Terminal bool `json:"terminal,omitempty"` // Stdin is whether the container will keep its STDIN open. Stdin bool `json:"stdin,omitempty"` // Labels are key-value pairs that are used to add metadata to // containers. // Optional. Labels map[string]string `json:"labels,omitempty"` // Annotations are key-value options passed into the container runtime // that can be used to trigger special behavior. // Optional. Annotations map[string]string `json:"annotations,omitempty"` // StopSignal is the signal that will be used to stop the container. // Must be a non-zero integer below SIGRTMAX. // If not provided, the default, SIGTERM, will be used. // Will conflict with Systemd if Systemd is set to "true" or "always". // Optional. StopSignal *syscall.Signal `json:"stop_signal,omitempty"` // StopTimeout is a timeout between the container's stop signal being // sent and SIGKILL being sent. // If not provided, the default will be used. // If 0 is used, stop signal will not be sent, and SIGKILL will be sent // instead. // Optional. StopTimeout *uint `json:"stop_timeout,omitempty"` // LogConfiguration describes the logging for a container including // driver, path, and options. // Optional LogConfiguration *LogConfig `json:"log_configuration,omitempty"` // ConmonPidFile is a path at which a PID file for Conmon will be // placed. // If not given, a default location will be used. // Optional. ConmonPidFile string `json:"conmon_pid_file,omitempty"` // RestartPolicy is the container's restart policy - an action which // will be taken when the container exits. // If not given, the default policy, which does nothing, will be used. // Optional. RestartPolicy string `json:"restart_policy,omitempty"` // RestartRetries is the number of attempts that will be made to restart // the container. // Only available when RestartPolicy is set to "on-failure". // Optional. RestartRetries *uint `json:"restart_tries,omitempty"` // OCIRuntime is the name of the OCI runtime that will be used to create // the container. // If not specified, the default will be used. // Optional. OCIRuntime string `json:"oci_runtime,omitempty"` // Systemd is whether the container will be started in systemd mode. // Valid options are "true", "false", and "always". // "true" enables this mode only if the binary run in the container is // /sbin/init or systemd. "always" unconditionally enables systemd mode. // "false" unconditionally disables systemd mode. // If enabled, mounts and stop signal will be modified. // If set to "always" or set to "true" and conditionally triggered, // conflicts with StopSignal. // If not specified, "false" will be assumed. // Optional. Systemd string `json:"systemd,omitempty"` // Determine how to handle the NOTIFY_SOCKET - do we participate or pass it through // "container" - let the OCI runtime deal with it, advertise conmon's MAINPID // "conmon-only" - advertise conmon's MAINPID, send READY when started, don't pass to OCI // "ignore" - unset NOTIFY_SOCKET SdNotifyMode string `json:"sdnotifyMode,omitempty"` // Namespace is the libpod namespace the container will be placed in. // Optional. Namespace string `json:"namespace,omitempty"` // PidNS is the container's PID namespace. // It defaults to private. // Mandatory. PidNS Namespace `json:"pidns,omitempty"` // UtsNS is the container's UTS namespace. // It defaults to private. // Must be set to Private to set Hostname. // Mandatory. UtsNS Namespace `json:"utsns,omitempty"` // Hostname is the container's hostname. If not set, the hostname will // not be modified (if UtsNS is not private) or will be set to the // container ID (if UtsNS is private). // Conflicts with UtsNS if UtsNS is not set to private. // Optional. Hostname string `json:"hostname,omitempty"` // Sysctl sets kernel parameters for the container Sysctl map[string]string `json:"sysctl,omitempty"` // Remove indicates if the container should be removed once it has been started // and exits Remove bool `json:"remove,omitempty"` // ContainerCreateCommand is the command that was used to create this // container. // This will be shown in the output of Inspect() on the container, and // may also be used by some tools that wish to recreate the container // (e.g. `podman generate systemd --new`). // Optional. ContainerCreateCommand []string `json:"containerCreateCommand,omitempty"` // 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. // set tags as `json:"-"` for not supported remote PreserveFDs uint `json:"-"` // Timezone is the timezone inside the container. // Local means it has the same timezone as the host machine Timezone string `json:"timezone,omitempty"` } // ContainerStorageConfig contains information on the storage configuration of a // container. type ContainerStorageConfig struct { // Image is the image the container will be based on. The image will be // used as the container's root filesystem, and its environment vars, // volumes, and other configuration will be applied to the container. // Conflicts with Rootfs. // At least one of Image or Rootfs must be specified. Image string `json:"image"` // Rootfs is the path to a directory that will be used as the // container's root filesystem. No modification will be made to the // directory, it will be directly mounted into the container as root. // Conflicts with Image. // At least one of Image or Rootfs must be specified. Rootfs string `json:"rootfs,omitempty"` // ImageVolumeMode indicates how image volumes will be created. // Supported modes are "ignore" (do not create), "tmpfs" (create as // tmpfs), and "anonymous" (create as anonymous volumes). // The default if unset is anonymous. // Optional. ImageVolumeMode string `json:"image_volume_mode,omitempty"` // VolumesFrom is a set of containers whose volumes will be added to // this container. The name or ID of the container must be provided, and // may optionally be followed by a : and then one or more // comma-separated options. Valid options are 'ro', 'rw', and 'z'. // Options will be used for all volumes sourced from the container. VolumesFrom []string `json:"volumes_from,omitempty"` // Init specifies that an init binary will be mounted into the // container, and will be used as PID1. Init bool `json:"init,omitempty"` // InitPath specifies the path to the init binary that will be added if // Init is specified above. If not specified, the default set in the // Libpod config will be used. Ignored if Init above is not set. // Optional. InitPath string `json:"init_path,omitempty"` // Mounts are mounts that will be added to the container. // These will supersede Image Volumes and VolumesFrom volumes where // there are conflicts. // Optional. Mounts []spec.Mount `json:"mounts,omitempty"` // Volumes are named volumes that will be added to the container. // These will supersede Image Volumes and VolumesFrom volumes where // there are conflicts. // Optional. Volumes []*NamedVolume `json:"volumes,omitempty"` // Overlay volumes are named volumes that will be added to the container. // Optional. OverlayVolumes []*OverlayVolume `json:"overlay_volumes,omitempty"` // Devices are devices that will be added to the container. // Optional. Devices []spec.LinuxDevice `json:"devices,omitempty"` // IpcNS is the container's IPC namespace. // Default is private. // Conflicts with ShmSize if not set to private. // Mandatory. IpcNS Namespace `json:"ipcns,omitempty"` // ShmSize is the size of the tmpfs to mount in at /dev/shm, in bytes. // Conflicts with ShmSize if IpcNS is not private. // Optional. ShmSize *int64 `json:"shm_size,omitempty"` // WorkDir is the container's working directory. // If unset, the default, /, will be used. // Optional. WorkDir string `json:"work_dir,omitempty"` // RootfsPropagation is the rootfs propagation mode for the container. // If not set, the default of rslave will be used. // Optional. RootfsPropagation string `json:"rootfs_propagation,omitempty"` } // ContainerSecurityConfig is a container's security features, including // SELinux, Apparmor, and Seccomp. type ContainerSecurityConfig struct { // Privileged is whether the container is privileged. // Privileged does the following: // - Adds all devices on the system to the container. // - Adds all capabilities to the container. // - Disables Seccomp, SELinux, and Apparmor confinement. // (Though SELinux can be manually re-enabled). // TODO: this conflicts with things. // TODO: this does more. Privileged bool `json:"privileged,omitempty"` // User is the user the container will be run as. // Can be given as a UID or a username; if a username, it will be // resolved within the container, using the container's /etc/passwd. // If unset, the container will be run as root. // Optional. User string `json:"user,omitempty"` // Groups are a list of supplemental groups the container's user will // be granted access to. // Optional. Groups []string `json:"groups,omitempty"` // CapAdd are capabilities which will be added to the container. // Conflicts with Privileged. // Optional. CapAdd []string `json:"cap_add,omitempty"` // CapDrop are capabilities which will be removed from the container. // Conflicts with Privileged. // Optional. CapDrop []string `json:"cap_drop,omitempty"` // SelinuxProcessLabel is the process label the container will use. // If SELinux is enabled and this is not specified, a label will be // automatically generated if not specified. // Optional. SelinuxOpts []string `json:"selinux_opts,omitempty"` // ApparmorProfile is the name of the Apparmor profile the container // will use. // Optional. ApparmorProfile string `json:"apparmor_profile,omitempty"` // SeccompPolicy determines which seccomp profile gets applied // the container. valid values: empty,default,image SeccompPolicy string `json:"seccomp_policy,omitempty"` // SeccompProfilePath is the path to a JSON file containing the // container's Seccomp profile. // If not specified, no Seccomp profile will be used. // Optional. SeccompProfilePath string `json:"seccomp_profile_path,omitempty"` // NoNewPrivileges is whether the container will set the no new // privileges flag on create, which disables gaining additional // privileges (e.g. via setuid) in the container. NoNewPrivileges bool `json:"no_new_privileges,omitempty"` // UserNS is the container's user namespace. // It defaults to host, indicating that no user namespace will be // created. // If set to private, IDMappings must be set. // Mandatory. UserNS Namespace `json:"userns,omitempty"` // IDMappings are UID and GID mappings that will be used by user // namespaces. // Required if UserNS is private. IDMappings *storage.IDMappingOptions `json:"idmappings,omitempty"` // ReadOnlyFilesystem indicates that everything will be mounted // as read-only ReadOnlyFilesystem bool `json:"read_only_filesystem,omittempty"` // Umask is the umask the init process of the container will be run with. Umask string `json:"umask,omitempty"` // ProcOpts are the options used for the proc mount. ProcOpts []string `json:"procfs_opts,omitempty"` } // ContainerCgroupConfig contains configuration information about a container's // cgroups. type ContainerCgroupConfig struct { // CgroupNS is the container's cgroup namespace. // It defaults to private. // Mandatory. CgroupNS Namespace `json:"cgroupns,omitempty"` // CgroupsMode sets a policy for how cgroups will be created in the // container, including the ability to disable creation entirely. CgroupsMode string `json:"cgroups_mode,omitempty"` // CgroupParent is the container's CGroup parent. // If not set, the default for the current cgroup driver will be used. // Optional. CgroupParent string `json:"cgroup_parent,omitempty"` } // ContainerNetworkConfig contains information on a container's network // configuration. type ContainerNetworkConfig struct { // NetNS is the configuration to use for the container's network // namespace. // Mandatory. NetNS Namespace `json:"netns,omitempty"` // StaticIP is the a IPv4 address of the container. // Only available if NetNS is set to Bridge. // Optional. StaticIP *net.IP `json:"static_ip,omitempty"` // StaticIPv6 is a static IPv6 address to set in the container. // Only available if NetNS is set to Bridge. // Optional. StaticIPv6 *net.IP `json:"static_ipv6,omitempty"` // StaticMAC is a static MAC address to set in the container. // Only available if NetNS is set to bridge. // Optional. StaticMAC *net.HardwareAddr `json:"static_mac,omitempty"` // PortBindings is a set of ports to map into the container. // Only available if NetNS is set to bridge or slirp. // Optional. PortMappings []PortMapping `json:"portmappings,omitempty"` // PublishExposedPorts will publish ports specified in the image to // random unused ports (guaranteed to be above 1024) on the host. // This is based on ports set in Expose below, and any ports specified // by the Image (if one is given). // Only available if NetNS is set to Bridge or Slirp. PublishExposedPorts bool `json:"publish_image_ports,omitempty"` // Expose is a number of ports that will be forwarded to the container // if PublishExposedPorts is set. // Expose is a map of uint16 (port number) to a string representing // protocol. Allowed protocols are "tcp", "udp", and "sctp", or some // combination of the three separated by commas. // If protocol is set to "" we will assume TCP. // Only available if NetNS is set to Bridge or Slirp, and // PublishExposedPorts is set. // Optional. Expose map[uint16]string `json:"expose,omitempty"` // CNINetworks is a list of CNI networks to join the container to. // If this list is empty, the default CNI network will be joined // instead. If at least one entry is present, we will not join the // default network (unless it is part of this list). // Only available if NetNS is set to bridge. // Optional. CNINetworks []string `json:"cni_networks,omitempty"` // UseImageResolvConf indicates that resolv.conf should not be managed // by Podman, but instead sourced from the image. // Conflicts with DNSServer, DNSSearch, DNSOption. UseImageResolvConf bool `json:"use_image_resolve_conf,omitempty"` // DNSServers is a set of DNS servers that will be used in the // container's resolv.conf, replacing the host's DNS Servers which are // used by default. // Conflicts with UseImageResolvConf. // Optional. DNSServers []net.IP `json:"dns_server,omitempty"` // DNSSearch is a set of DNS search domains that will be used in the // container's resolv.conf, replacing the host's DNS search domains // which are used by default. // Conflicts with UseImageResolvConf. // Optional. DNSSearch []string `json:"dns_search,omitempty"` // DNSOptions is a set of DNS options that will be used in the // container's resolv.conf, replacing the host's DNS options which are // used by default. // Conflicts with UseImageResolvConf. // Optional. DNSOptions []string `json:"dns_option,omitempty"` // UseImageHosts indicates that /etc/hosts should not be managed by // Podman, and instead sourced from the image. // Conflicts with HostAdd. UseImageHosts bool `json:"use_image_hosts,omitempty"` // HostAdd is a set of hosts which will be added to the container's // /etc/hosts file. // Conflicts with UseImageHosts. // Optional. HostAdd []string `json:"hostadd,omitempty"` // NetworkOptions are additional options for each network // Optional. NetworkOptions map[string][]string `json:"network_options,omitempty"` } // ContainerResourceConfig contains information on container resource limits. type ContainerResourceConfig struct { // ResourceLimits are resource limits to apply to the container., // Can only be set as root on cgroups v1 systems, but can be set as // rootless as well for cgroups v2. // Optional. ResourceLimits *spec.LinuxResources `json:"resource_limits,omitempty"` // Rlimits are POSIX rlimits to apply to the container. // Optional. Rlimits []spec.POSIXRlimit `json:"r_limits,omitempty"` // OOMScoreAdj adjusts the score used by the OOM killer to determine // processes to kill for the container's process. // Optional. OOMScoreAdj *int `json:"oom_score_adj,omitempty"` // Weight per cgroup per device, can override BlkioWeight WeightDevice map[string]spec.LinuxWeightDevice `json:"weightDevice,omitempty"` // IO read rate limit per cgroup per device, bytes per second ThrottleReadBpsDevice map[string]spec.LinuxThrottleDevice `json:"throttleReadBpsDevice,omitempty"` // IO write rate limit per cgroup per device, bytes per second ThrottleWriteBpsDevice map[string]spec.LinuxThrottleDevice `json:"throttleWriteBpsDevice,omitempty"` // IO read rate limit per cgroup per device, IO per second ThrottleReadIOPSDevice map[string]spec.LinuxThrottleDevice `json:"throttleReadIOPSDevice,omitempty"` // IO write rate limit per cgroup per device, IO per second ThrottleWriteIOPSDevice map[string]spec.LinuxThrottleDevice `json:"throttleWriteIOPSDevice,omitempty"` } // ContainerHealthCheckConfig describes a container healthcheck with attributes // like command, retries, interval, start period, and timeout. type ContainerHealthCheckConfig struct { HealthConfig *manifest.Schema2HealthConfig `json:"healthconfig,omitempty"` } // SpecGenerator creates an OCI spec and Libpod configuration options to create // a container based on the given configuration. // swagger:model SpecGenerator type SpecGenerator struct { ContainerBasicConfig ContainerStorageConfig ContainerSecurityConfig ContainerCgroupConfig ContainerNetworkConfig ContainerResourceConfig ContainerHealthCheckConfig } // NamedVolume holds information about a named volume that will be mounted into // the container. type NamedVolume struct { // Name is the name of the named volume to be mounted. May be empty. // If empty, a new named volume with a pseudorandomly generated name // will be mounted at the given destination. Name string // Destination to mount the named volume within the container. Must be // an absolute path. Path will be created if it does not exist. Dest string // Options are options that the named volume will be mounted with. Options []string } // OverlayVolume holds information about a overlay volume that will be mounted into // the container. type OverlayVolume struct { // Destination is the absolute path where the mount will be placed in the container. Destination string `json:"destination"` // Source specifies the source path of the mount. Source string `json:"source,omitempty"` } // PortMapping is one or more ports that will be mapped into the container. type PortMapping struct { // HostIP is the IP that we will bind to on the host. // If unset, assumed to be 0.0.0.0 (all interfaces). HostIP string `json:"host_ip,omitempty"` // ContainerPort is the port number that will be exposed from the // container. // Mandatory. ContainerPort uint16 `json:"container_port"` // HostPort is the port number that will be forwarded from the host into // the container. // If omitted, a random port on the host (guaranteed to be over 1024) // will be assigned. HostPort uint16 `json:"host_port,omitempty"` // Range is the number of ports that will be forwarded, starting at // HostPort and ContainerPort and counting up. // This is 1-indexed, so 1 is assumed to be a single port (only the // Hostport:Containerport mapping will be added), 2 is two ports (both // Hostport:Containerport and Hostport+1:Containerport+1), etc. // If unset, assumed to be 1 (a single port). // Both hostport + range and containerport + range must be less than // 65536. Range uint16 `json:"range,omitempty"` // Protocol is the protocol forward. // Must be either "tcp", "udp", and "sctp", or some combination of these // separated by commas. // If unset, assumed to be TCP. Protocol string `json:"protocol,omitempty"` } var ( // ErrNoStaticIPRootless is used when a rootless user requests to assign a static IP address // to a pod or container ErrNoStaticIPRootless error = errors.New("rootless containers and pods cannot be assigned static IP addresses") // ErrNoStaticMACRootless is used when a rootless user requests to assign a static MAC address // to a pod or container ErrNoStaticMACRootless error = errors.New("rootless containers and pods cannot be assigned static MAC addresses") ) // NewSpecGenerator returns a SpecGenerator struct given one of two mandatory inputs func NewSpecGenerator(arg string, rootfs bool) *SpecGenerator { csc := ContainerStorageConfig{} if rootfs { csc.Rootfs = arg } else { csc.Image = arg } return &SpecGenerator{ ContainerStorageConfig: csc, } } // NewSpecGenerator returns a SpecGenerator struct given one of two mandatory inputs func NewSpecGeneratorWithRootfs(rootfs string) *SpecGenerator { csc := ContainerStorageConfig{Rootfs: rootfs} return &SpecGenerator{ContainerStorageConfig: csc} }