package specgenutil import ( "encoding/json" "fmt" "os" "strconv" "strings" "time" "github.com/containers/image/v5/manifest" "github.com/containers/podman/v3/cmd/podman/parse" "github.com/containers/podman/v3/libpod/define" ann "github.com/containers/podman/v3/pkg/annotations" "github.com/containers/podman/v3/pkg/domain/entities" envLib "github.com/containers/podman/v3/pkg/env" "github.com/containers/podman/v3/pkg/namespaces" "github.com/containers/podman/v3/pkg/specgen" systemdDefine "github.com/containers/podman/v3/pkg/systemd/define" "github.com/containers/podman/v3/pkg/util" "github.com/docker/go-units" "github.com/opencontainers/runtime-spec/specs-go" "github.com/pkg/errors" ) func getCPULimits(c *entities.ContainerCreateOptions) *specs.LinuxCPU { cpu := &specs.LinuxCPU{} hasLimits := false if c.CPUS > 0 { period, quota := util.CoresToPeriodAndQuota(c.CPUS) cpu.Period = &period cpu.Quota = "a hasLimits = true } if c.CPUShares > 0 { cpu.Shares = &c.CPUShares hasLimits = true } if c.CPUPeriod > 0 { cpu.Period = &c.CPUPeriod hasLimits = true } if c.CPUSetCPUs != "" { cpu.Cpus = c.CPUSetCPUs hasLimits = true } if c.CPUSetMems != "" { cpu.Mems = c.CPUSetMems hasLimits = true } if c.CPUQuota > 0 { cpu.Quota = &c.CPUQuota hasLimits = true } if c.CPURTPeriod > 0 { cpu.RealtimePeriod = &c.CPURTPeriod hasLimits = true } if c.CPURTRuntime > 0 { cpu.RealtimeRuntime = &c.CPURTRuntime hasLimits = true } if !hasLimits { return nil } return cpu } func getIOLimits(s *specgen.SpecGenerator, c *entities.ContainerCreateOptions) (*specs.LinuxBlockIO, error) { var err error io := &specs.LinuxBlockIO{} hasLimits := false if b := c.BlkIOWeight; len(b) > 0 { u, err := strconv.ParseUint(b, 10, 16) if err != nil { return nil, errors.Wrapf(err, "invalid value for blkio-weight") } nu := uint16(u) io.Weight = &nu hasLimits = true } if len(c.BlkIOWeightDevice) > 0 { if err := parseWeightDevices(s, c.BlkIOWeightDevice); err != nil { return nil, err } hasLimits = true } if bps := c.DeviceReadBPs; len(bps) > 0 { if s.ThrottleReadBpsDevice, err = parseThrottleBPSDevices(bps); err != nil { return nil, err } hasLimits = true } if bps := c.DeviceWriteBPs; len(bps) > 0 { if s.ThrottleWriteBpsDevice, err = parseThrottleBPSDevices(bps); err != nil { return nil, err } hasLimits = true } if iops := c.DeviceReadIOPs; len(iops) > 0 { if s.ThrottleReadIOPSDevice, err = parseThrottleIOPsDevices(iops); err != nil { return nil, err } hasLimits = true } if iops := c.DeviceWriteIOPs; len(iops) > 0 { if s.ThrottleWriteIOPSDevice, err = parseThrottleIOPsDevices(iops); err != nil { return nil, err } hasLimits = true } if !hasLimits { return nil, nil } return io, nil } func getMemoryLimits(s *specgen.SpecGenerator, c *entities.ContainerCreateOptions) (*specs.LinuxMemory, error) { var err error memory := &specs.LinuxMemory{} hasLimits := false if m := c.Memory; len(m) > 0 { ml, err := units.RAMInBytes(m) if err != nil { return nil, errors.Wrapf(err, "invalid value for memory") } if ml > 0 { memory.Limit = &ml if c.MemorySwap == "" { limit := 2 * ml memory.Swap = &(limit) } hasLimits = true } } if m := c.MemoryReservation; len(m) > 0 { mr, err := units.RAMInBytes(m) if err != nil { return nil, errors.Wrapf(err, "invalid value for memory") } memory.Reservation = &mr hasLimits = true } if m := c.MemorySwap; len(m) > 0 { var ms int64 // only set memory swap if it was set // -1 indicates unlimited if m != "-1" { ms, err = units.RAMInBytes(m) memory.Swap = &ms if err != nil { return nil, errors.Wrapf(err, "invalid value for memory") } hasLimits = true } } if m := c.KernelMemory; len(m) > 0 { mk, err := units.RAMInBytes(m) if err != nil { return nil, errors.Wrapf(err, "invalid value for kernel-memory") } memory.Kernel = &mk hasLimits = true } if c.MemorySwappiness > 0 { swappiness := uint64(c.MemorySwappiness) memory.Swappiness = &swappiness hasLimits = true } if c.OOMKillDisable { memory.DisableOOMKiller = &c.OOMKillDisable hasLimits = true } if !hasLimits { return nil, nil } return memory, nil } func setNamespaces(s *specgen.SpecGenerator, c *entities.ContainerCreateOptions) error { var err error if c.PID != "" { s.PidNS, err = specgen.ParseNamespace(c.PID) if err != nil { return err } } if c.IPC != "" { s.IpcNS, err = specgen.ParseNamespace(c.IPC) if err != nil { return err } } if c.UTS != "" { s.UtsNS, err = specgen.ParseNamespace(c.UTS) if err != nil { return err } } if c.CgroupNS != "" { s.CgroupNS, err = specgen.ParseNamespace(c.CgroupNS) if err != nil { return err } } // userns must be treated differently if c.UserNS != "" { s.UserNS, err = specgen.ParseUserNamespace(c.UserNS) if err != nil { return err } } if c.Net != nil { s.NetNS = c.Net.Network } return nil } func FillOutSpecGen(s *specgen.SpecGenerator, c *entities.ContainerCreateOptions, args []string) error { var ( err error ) // validate flags as needed if err := validate(c); err != nil { return err } s.User = c.User var inputCommand []string if !c.IsInfra { if len(args) > 1 { inputCommand = args[1:] } } if len(c.HealthCmd) > 0 { if c.NoHealthCheck { return errors.New("Cannot specify both --no-healthcheck and --health-cmd") } s.HealthConfig, err = makeHealthCheckFromCli(c.HealthCmd, c.HealthInterval, c.HealthRetries, c.HealthTimeout, c.HealthStartPeriod) if err != nil { return err } } else if c.NoHealthCheck { s.HealthConfig = &manifest.Schema2HealthConfig{ Test: []string{"NONE"}, } } if err := setNamespaces(s, c); err != nil { return err } userNS := namespaces.UsernsMode(s.UserNS.NSMode) tempIDMap, err := util.ParseIDMapping(namespaces.UsernsMode(c.UserNS), []string{}, []string{}, "", "") if err != nil { return err } s.IDMappings, err = util.ParseIDMapping(userNS, c.UIDMap, c.GIDMap, c.SubUIDName, c.SubGIDName) if err != nil { return err } if len(s.IDMappings.GIDMap) == 0 { s.IDMappings.AutoUserNsOpts.AdditionalGIDMappings = tempIDMap.AutoUserNsOpts.AdditionalGIDMappings if s.UserNS.NSMode == specgen.NamespaceMode("auto") { s.IDMappings.AutoUserNs = true } } if len(s.IDMappings.UIDMap) == 0 { s.IDMappings.AutoUserNsOpts.AdditionalUIDMappings = tempIDMap.AutoUserNsOpts.AdditionalUIDMappings if s.UserNS.NSMode == specgen.NamespaceMode("auto") { s.IDMappings.AutoUserNs = true } } if tempIDMap.AutoUserNsOpts.Size != 0 { s.IDMappings.AutoUserNsOpts.Size = tempIDMap.AutoUserNsOpts.Size } // If some mappings are specified, assume a private user namespace if userNS.IsDefaultValue() && (!s.IDMappings.HostUIDMapping || !s.IDMappings.HostGIDMapping) { s.UserNS.NSMode = specgen.Private } else { s.UserNS.NSMode = specgen.NamespaceMode(userNS) } s.Terminal = c.TTY if err := verifyExpose(c.Expose); err != nil { return err } // We are not handling the Expose flag yet. // s.PortsExpose = c.Expose if c.Net != nil { s.PortMappings = c.Net.PublishPorts } s.PublishExposedPorts = c.PublishAll s.Pod = c.Pod if len(c.PodIDFile) > 0 { if len(s.Pod) > 0 { return errors.New("Cannot specify both --pod and --pod-id-file") } podID, err := ReadPodIDFile(c.PodIDFile) if err != nil { return err } s.Pod = podID } expose, err := createExpose(c.Expose) if err != nil { return err } s.Expose = expose if sig := c.StopSignal; len(sig) > 0 { stopSignal, err := util.ParseSignal(sig) if err != nil { return err } s.StopSignal = &stopSignal } // ENVIRONMENT VARIABLES // // Precedence order (higher index wins): // 1) containers.conf (EnvHost, EnvHTTP, Env) 2) image data, 3 User EnvHost/EnvHTTP, 4) env-file, 5) env // containers.conf handled and image data handled on the server side // user specified EnvHost and EnvHTTP handled on Server Side relative to Server // env-file and env handled on client side var env map[string]string // First transform the os env into a map. We need it for the labels later in // any case. osEnv, err := envLib.ParseSlice(os.Environ()) if err != nil { return errors.Wrap(err, "error parsing host environment variables") } s.EnvHost = c.EnvHost s.HTTPProxy = c.HTTPProxy // env-file overrides any previous variables for _, f := range c.EnvFile { fileEnv, err := envLib.ParseFile(f) if err != nil { return err } // File env is overridden by env. env = envLib.Join(env, fileEnv) } parsedEnv, err := envLib.ParseSlice(c.Env) if err != nil { return err } s.Env = envLib.Join(env, parsedEnv) // LABEL VARIABLES labels, err := parse.GetAllLabels(c.LabelFile, c.Label) if err != nil { return errors.Wrapf(err, "unable to process labels") } if systemdUnit, exists := osEnv[systemdDefine.EnvVariable]; exists { labels[systemdDefine.EnvVariable] = systemdUnit } s.Labels = labels // ANNOTATIONS annotations := make(map[string]string) // First, add our default annotations annotations[ann.TTY] = "false" if c.TTY { annotations[ann.TTY] = "true" } // Last, add user annotations for _, annotation := range c.Annotation { splitAnnotation := strings.SplitN(annotation, "=", 2) if len(splitAnnotation) < 2 { return errors.Errorf("Annotations must be formatted KEY=VALUE") } annotations[splitAnnotation[0]] = splitAnnotation[1] } s.Annotations = annotations if len(c.StorageOpts) > 0 { opts := make(map[string]string, len(c.StorageOpts)) for _, opt := range c.StorageOpts { split := strings.SplitN(opt, "=", 2) if len(split) != 2 { return errors.Errorf("storage-opt must be formatted KEY=VALUE") } opts[split[0]] = split[1] } s.StorageOpts = opts } s.WorkDir = c.Workdir if c.Entrypoint != nil { entrypoint := []string{} if ep := *c.Entrypoint; len(ep) > 0 { // Check if entrypoint specified is json if err := json.Unmarshal([]byte(*c.Entrypoint), &entrypoint); err != nil { entrypoint = append(entrypoint, ep) } } s.Entrypoint = entrypoint } // Include the command used to create the container. s.ContainerCreateCommand = os.Args if len(inputCommand) > 0 { s.Command = inputCommand } // SHM Size if c.ShmSize != "" { shmSize, err := units.FromHumanSize(c.ShmSize) if err != nil { return errors.Wrapf(err, "unable to translate --shm-size") } s.ShmSize = &shmSize } if c.Net != nil { s.CNINetworks = c.Net.CNINetworks } // Network aliases if c.Net != nil { if len(c.Net.Aliases) > 0 { // build a map of aliases where key=cniName aliases := make(map[string][]string, len(s.CNINetworks)) for _, cniNetwork := range s.CNINetworks { aliases[cniNetwork] = c.Net.Aliases } s.Aliases = aliases } } if c.Net != nil { s.HostAdd = c.Net.AddHosts s.UseImageResolvConf = c.Net.UseImageResolvConf s.DNSServers = c.Net.DNSServers s.DNSSearch = c.Net.DNSSearch s.DNSOptions = c.Net.DNSOptions s.StaticIP = c.Net.StaticIP s.StaticMAC = c.Net.StaticMAC s.NetworkOptions = c.Net.NetworkOptions s.UseImageHosts = c.Net.NoHosts } s.ImageVolumeMode = c.ImageVolume if s.ImageVolumeMode == "bind" { s.ImageVolumeMode = "anonymous" } s.Systemd = strings.ToLower(c.Systemd) s.SdNotifyMode = c.SdNotifyMode if s.ResourceLimits == nil { s.ResourceLimits = &specs.LinuxResources{} } s.ResourceLimits.Memory, err = getMemoryLimits(s, c) if err != nil { return err } s.ResourceLimits.BlockIO, err = getIOLimits(s, c) if err != nil { return err } if c.PIDsLimit != nil { pids := specs.LinuxPids{ Limit: *c.PIDsLimit, } s.ResourceLimits.Pids = &pids } s.ResourceLimits.CPU = getCPULimits(c) unifieds := make(map[string]string) for _, unified := range c.CgroupConf { splitUnified := strings.SplitN(unified, "=", 2) if len(splitUnified) < 2 { return errors.Errorf("--cgroup-conf must be formatted KEY=VALUE") } unifieds[splitUnified[0]] = splitUnified[1] } if len(unifieds) > 0 { s.ResourceLimits.Unified = unifieds } if s.ResourceLimits.CPU == nil && s.ResourceLimits.Pids == nil && s.ResourceLimits.BlockIO == nil && s.ResourceLimits.Memory == nil && s.ResourceLimits.Unified == nil { s.ResourceLimits = nil } if s.LogConfiguration == nil { s.LogConfiguration = &specgen.LogConfig{} } if ld := c.LogDriver; len(ld) > 0 { s.LogConfiguration.Driver = ld } s.CgroupParent = c.CGroupParent s.CgroupsMode = c.CGroupsMode s.Groups = c.GroupAdd s.Hostname = c.Hostname sysctl := map[string]string{} if ctl := c.Sysctl; len(ctl) > 0 { sysctl, err = util.ValidateSysctls(ctl) if err != nil { return err } } s.Sysctl = sysctl s.CapAdd = c.CapAdd s.CapDrop = c.CapDrop s.Privileged = c.Privileged s.ReadOnlyFilesystem = c.ReadOnly s.ConmonPidFile = c.ConmonPIDFile s.DependencyContainers = c.Requires // TODO // outside of specgen and oci though // defaults to true, check spec/storage // s.readonly = c.ReadOnlyTmpFS // TODO convert to map? // check if key=value and convert sysmap := make(map[string]string) for _, ctl := range c.Sysctl { splitCtl := strings.SplitN(ctl, "=", 2) if len(splitCtl) < 2 { return errors.Errorf("invalid sysctl value %q", ctl) } sysmap[splitCtl[0]] = splitCtl[1] } s.Sysctl = sysmap if c.CIDFile != "" { s.Annotations[define.InspectAnnotationCIDFile] = c.CIDFile } for _, opt := range c.SecurityOpt { if opt == "no-new-privileges" { s.ContainerSecurityConfig.NoNewPrivileges = true } else { con := strings.SplitN(opt, "=", 2) if len(con) != 2 { return fmt.Errorf("invalid --security-opt 1: %q", opt) } switch con[0] { case "apparmor": s.ContainerSecurityConfig.ApparmorProfile = con[1] s.Annotations[define.InspectAnnotationApparmor] = con[1] case "label": // TODO selinux opts and label opts are the same thing s.ContainerSecurityConfig.SelinuxOpts = append(s.ContainerSecurityConfig.SelinuxOpts, con[1]) s.Annotations[define.InspectAnnotationLabel] = strings.Join(s.ContainerSecurityConfig.SelinuxOpts, ",label=") case "mask": s.ContainerSecurityConfig.Mask = append(s.ContainerSecurityConfig.Mask, strings.Split(con[1], ":")...) case "proc-opts": s.ProcOpts = strings.Split(con[1], ",") case "seccomp": s.SeccompProfilePath = con[1] s.Annotations[define.InspectAnnotationSeccomp] = con[1] // this option is for docker compatibility, it is the same as unmask=ALL case "systempaths": if con[1] == "unconfined" { s.ContainerSecurityConfig.Unmask = append(s.ContainerSecurityConfig.Unmask, []string{"ALL"}...) } else { return fmt.Errorf("invalid systempaths option %q, only `unconfined` is supported", con[1]) } case "unmask": s.ContainerSecurityConfig.Unmask = append(s.ContainerSecurityConfig.Unmask, con[1:]...) default: return fmt.Errorf("invalid --security-opt 2: %q", opt) } } } s.SeccompPolicy = c.SeccompPolicy s.VolumesFrom = c.VolumesFrom // Only add read-only tmpfs mounts in case that we are read-only and the // read-only tmpfs flag has been set. mounts, volumes, overlayVolumes, imageVolumes, err := parseVolumes(c.Volume, c.Mount, c.TmpFS, c.ReadOnlyTmpFS && c.ReadOnly) if err != nil { return err } s.Mounts = mounts s.Volumes = volumes s.OverlayVolumes = overlayVolumes s.ImageVolumes = imageVolumes for _, dev := range c.Devices { s.Devices = append(s.Devices, specs.LinuxDevice{Path: dev}) } for _, rule := range c.DeviceCGroupRule { dev, err := parseLinuxResourcesDeviceAccess(rule) if err != nil { return err } s.DeviceCGroupRule = append(s.DeviceCGroupRule, dev) } s.Init = c.Init s.InitPath = c.InitPath s.Stdin = c.Interactive // quiet // DeviceCgroupRules: c.StringSlice("device-cgroup-rule"), // Rlimits/Ulimits for _, u := range c.Ulimit { if u == "host" { s.Rlimits = nil break } ul, err := units.ParseUlimit(u) if err != nil { return errors.Wrapf(err, "ulimit option %q requires name=SOFT:HARD, failed to be parsed", u) } rl := specs.POSIXRlimit{ Type: ul.Name, Hard: uint64(ul.Hard), Soft: uint64(ul.Soft), } s.Rlimits = append(s.Rlimits, rl) } logOpts := make(map[string]string) for _, o := range c.LogOptions { split := strings.SplitN(o, "=", 2) if len(split) < 2 { return errors.Errorf("invalid log option %q", o) } switch strings.ToLower(split[0]) { case "driver": s.LogConfiguration.Driver = split[1] case "path": s.LogConfiguration.Path = split[1] case "max-size": logSize, err := units.FromHumanSize(split[1]) if err != nil { return err } s.LogConfiguration.Size = logSize default: logOpts[split[0]] = split[1] } } s.LogConfiguration.Options = logOpts s.Name = c.Name s.PreserveFDs = c.PreserveFDs s.OOMScoreAdj = &c.OOMScoreAdj if c.Restart != "" { splitRestart := strings.Split(c.Restart, ":") switch len(splitRestart) { case 1: // No retries specified case 2: if strings.ToLower(splitRestart[0]) != "on-failure" { return errors.Errorf("restart policy retries can only be specified with on-failure restart policy") } retries, err := strconv.Atoi(splitRestart[1]) if err != nil { return errors.Wrapf(err, "error parsing restart policy retry count") } if retries < 0 { return errors.Errorf("must specify restart policy retry count as a number greater than 0") } var retriesUint = uint(retries) s.RestartRetries = &retriesUint default: return errors.Errorf("invalid restart policy: may specify retries at most once") } s.RestartPolicy = splitRestart[0] } s.Secrets, s.EnvSecrets, err = parseSecrets(c.Secrets) if err != nil { return err } if c.Personality != "" { s.Personality = &specs.LinuxPersonality{} s.Personality.Domain = specs.LinuxPersonalityDomain(c.Personality) } s.Remove = c.Rm s.StopTimeout = &c.StopTimeout s.Timeout = c.Timeout s.Timezone = c.Timezone s.Umask = c.Umask s.PidFile = c.PidFile s.Volatile = c.Rm // Initcontainers s.InitContainerType = c.InitContainerType return nil } func makeHealthCheckFromCli(inCmd, interval string, retries uint, timeout, startPeriod string) (*manifest.Schema2HealthConfig, error) { cmdArr := []string{} isArr := true err := json.Unmarshal([]byte(inCmd), &cmdArr) // array unmarshalling if err != nil { cmdArr = strings.SplitN(inCmd, " ", 2) // default for compat isArr = false } // Every healthcheck requires a command if len(cmdArr) == 0 { return nil, errors.New("Must define a healthcheck command for all healthchecks") } concat := "" if cmdArr[0] == "CMD" || cmdArr[0] == "none" { // this is for compat, we are already split properly for most compat cases cmdArr = strings.Fields(inCmd) } else if cmdArr[0] != "CMD-SHELL" { // this is for podman side of things, won't contain the keywords if isArr && len(cmdArr) > 1 { // an array of consecutive commands cmdArr = append([]string{"CMD"}, cmdArr...) } else { // one singular command if len(cmdArr) == 1 { concat = cmdArr[0] } else { concat = strings.Join(cmdArr[0:], " ") } cmdArr = append([]string{"CMD-SHELL"}, concat) } } if cmdArr[0] == "none" { // if specified to remove healtcheck cmdArr = []string{"NONE"} } // healthcheck is by default an array, so we simply pass the user input hc := manifest.Schema2HealthConfig{ Test: cmdArr, } if interval == "disable" { interval = "0" } intervalDuration, err := time.ParseDuration(interval) if err != nil { return nil, errors.Wrapf(err, "invalid healthcheck-interval") } hc.Interval = intervalDuration if retries < 1 { return nil, errors.New("healthcheck-retries must be greater than 0") } hc.Retries = int(retries) timeoutDuration, err := time.ParseDuration(timeout) if err != nil { return nil, errors.Wrapf(err, "invalid healthcheck-timeout") } if timeoutDuration < time.Duration(1) { return nil, errors.New("healthcheck-timeout must be at least 1 second") } hc.Timeout = timeoutDuration startPeriodDuration, err := time.ParseDuration(startPeriod) if err != nil { return nil, errors.Wrapf(err, "invalid healthcheck-start-period") } if startPeriodDuration < time.Duration(0) { return nil, errors.New("healthcheck-start-period must be 0 seconds or greater") } hc.StartPeriod = startPeriodDuration return &hc, nil } func parseWeightDevices(s *specgen.SpecGenerator, weightDevs []string) error { for _, val := range weightDevs { split := strings.SplitN(val, ":", 2) if len(split) != 2 { return fmt.Errorf("bad format: %s", val) } if !strings.HasPrefix(split[0], "/dev/") { return fmt.Errorf("bad format for device path: %s", val) } weight, err := strconv.ParseUint(split[1], 10, 0) if err != nil { return fmt.Errorf("invalid weight for device: %s", val) } if weight > 0 && (weight < 10 || weight > 1000) { return fmt.Errorf("invalid weight for device: %s", val) } w := uint16(weight) s.WeightDevice[split[0]] = specs.LinuxWeightDevice{ Weight: &w, LeafWeight: nil, } } return nil } func parseThrottleBPSDevices(bpsDevices []string) (map[string]specs.LinuxThrottleDevice, error) { td := make(map[string]specs.LinuxThrottleDevice) for _, val := range bpsDevices { split := strings.SplitN(val, ":", 2) if len(split) != 2 { return nil, fmt.Errorf("bad format: %s", val) } if !strings.HasPrefix(split[0], "/dev/") { return nil, fmt.Errorf("bad format for device path: %s", val) } rate, err := units.RAMInBytes(split[1]) if err != nil { return nil, fmt.Errorf("invalid rate for device: %s. The correct format is :[]. Number must be a positive integer. Unit is optional and can be kb, mb, or gb", val) } if rate < 0 { return nil, fmt.Errorf("invalid rate for device: %s. The correct format is :[]. Number must be a positive integer. Unit is optional and can be kb, mb, or gb", val) } td[split[0]] = specs.LinuxThrottleDevice{Rate: uint64(rate)} } return td, nil } func parseThrottleIOPsDevices(iopsDevices []string) (map[string]specs.LinuxThrottleDevice, error) { td := make(map[string]specs.LinuxThrottleDevice) for _, val := range iopsDevices { split := strings.SplitN(val, ":", 2) if len(split) != 2 { return nil, fmt.Errorf("bad format: %s", val) } if !strings.HasPrefix(split[0], "/dev/") { return nil, fmt.Errorf("bad format for device path: %s", val) } rate, err := strconv.ParseUint(split[1], 10, 64) if err != nil { return nil, fmt.Errorf("invalid rate for device: %s. The correct format is :. Number must be a positive integer", val) } td[split[0]] = specs.LinuxThrottleDevice{Rate: rate} } return td, nil } func parseSecrets(secrets []string) ([]specgen.Secret, map[string]string, error) { secretParseError := errors.New("error parsing secret") var mount []specgen.Secret envs := make(map[string]string) for _, val := range secrets { // mount only tells if user has set an option that can only be used with mount secret type mountOnly := false source := "" secretType := "" target := "" var uid, gid uint32 // default mode 444 octal = 292 decimal var mode uint32 = 292 split := strings.Split(val, ",") // --secret mysecret if len(split) == 1 { mountSecret := specgen.Secret{ Source: val, UID: uid, GID: gid, Mode: mode, } mount = append(mount, mountSecret) continue } // --secret mysecret,opt=opt if !strings.Contains(split[0], "=") { source = split[0] split = split[1:] } for _, val := range split { kv := strings.SplitN(val, "=", 2) if len(kv) < 2 { return nil, nil, errors.Wrapf(secretParseError, "option %s must be in form option=value", val) } switch kv[0] { case "source": source = kv[1] case "type": if secretType != "" { return nil, nil, errors.Wrap(secretParseError, "cannot set more tha one secret type") } if kv[1] != "mount" && kv[1] != "env" { return nil, nil, errors.Wrapf(secretParseError, "type %s is invalid", kv[1]) } secretType = kv[1] case "target": target = kv[1] case "mode": mountOnly = true mode64, err := strconv.ParseUint(kv[1], 8, 32) if err != nil { return nil, nil, errors.Wrapf(secretParseError, "mode %s invalid", kv[1]) } mode = uint32(mode64) case "uid", "UID": mountOnly = true uid64, err := strconv.ParseUint(kv[1], 10, 32) if err != nil { return nil, nil, errors.Wrapf(secretParseError, "UID %s invalid", kv[1]) } uid = uint32(uid64) case "gid", "GID": mountOnly = true gid64, err := strconv.ParseUint(kv[1], 10, 32) if err != nil { return nil, nil, errors.Wrapf(secretParseError, "GID %s invalid", kv[1]) } gid = uint32(gid64) default: return nil, nil, errors.Wrapf(secretParseError, "option %s invalid", val) } } if secretType == "" { secretType = "mount" } if source == "" { return nil, nil, errors.Wrapf(secretParseError, "no source found %s", val) } if secretType == "mount" { if target != "" { return nil, nil, errors.Wrapf(secretParseError, "target option is invalid for mounted secrets") } mountSecret := specgen.Secret{ Source: source, UID: uid, GID: gid, Mode: mode, } mount = append(mount, mountSecret) } if secretType == "env" { if mountOnly { return nil, nil, errors.Wrap(secretParseError, "UID, GID, Mode options cannot be set with secret type env") } if target == "" { target = source } envs[target] = source } } return mount, envs, nil } var cgroupDeviceType = map[string]bool{ "a": true, // all "b": true, // block device "c": true, // character device } var cgroupDeviceAccess = map[string]bool{ "r": true, //read "w": true, //write "m": true, //mknod } // parseLinuxResourcesDeviceAccess parses the raw string passed with the --device-access-add flag func parseLinuxResourcesDeviceAccess(device string) (specs.LinuxDeviceCgroup, error) { var devType, access string var major, minor *int64 value := strings.Split(device, " ") if len(value) != 3 { return specs.LinuxDeviceCgroup{}, fmt.Errorf("invalid device cgroup rule requires type, major:Minor, and access rules: %q", device) } devType = value[0] if !cgroupDeviceType[devType] { return specs.LinuxDeviceCgroup{}, fmt.Errorf("invalid device type in device-access-add: %s", devType) } number := strings.SplitN(value[1], ":", 2) i, err := strconv.ParseInt(number[0], 10, 64) if err != nil { return specs.LinuxDeviceCgroup{}, err } major = &i if len(number) == 2 && number[1] != "*" { i, err := strconv.ParseInt(number[1], 10, 64) if err != nil { return specs.LinuxDeviceCgroup{}, err } minor = &i } access = value[2] for _, c := range strings.Split(access, "") { if !cgroupDeviceAccess[c] { return specs.LinuxDeviceCgroup{}, fmt.Errorf("invalid device access in device-access-add: %s", c) } } return specs.LinuxDeviceCgroup{ Allow: true, Type: devType, Major: major, Minor: minor, Access: access, }, nil }