780 lines
19 KiB
Go
780 lines
19 KiB
Go
package libpod
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import (
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"net"
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"path/filepath"
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"regexp"
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"syscall"
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"github.com/containers/storage"
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"github.com/containers/storage/pkg/idtools"
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"github.com/cri-o/ocicni/pkg/ocicni"
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"github.com/pkg/errors"
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)
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var (
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nameRegex = regexp.MustCompile("[a-zA-Z0-9_-]+")
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)
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// Runtime Creation Options
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// WithStorageConfig uses the given configuration to set up container storage
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// If this is not specified, the system default configuration will be used
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// instead
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func WithStorageConfig(config storage.StoreOptions) RuntimeOption {
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return func(rt *Runtime) error {
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if rt.valid {
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return ErrRuntimeFinalized
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}
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rt.config.StorageConfig.RunRoot = config.RunRoot
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rt.config.StorageConfig.GraphRoot = config.GraphRoot
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rt.config.StorageConfig.GraphDriverName = config.GraphDriverName
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rt.config.StaticDir = filepath.Join(config.GraphRoot, "libpod")
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rt.config.StorageConfig.GraphDriverOptions = make([]string, len(config.GraphDriverOptions))
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copy(rt.config.StorageConfig.GraphDriverOptions, config.GraphDriverOptions)
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rt.config.StorageConfig.UIDMap = make([]idtools.IDMap, len(config.UIDMap))
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copy(rt.config.StorageConfig.UIDMap, config.UIDMap)
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rt.config.StorageConfig.GIDMap = make([]idtools.IDMap, len(config.GIDMap))
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copy(rt.config.StorageConfig.GIDMap, config.GIDMap)
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return nil
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}
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}
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// WithDefaultTransport sets the default transport for retrieving images
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func WithDefaultTransport(defaultTransport string) RuntimeOption {
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return func(rt *Runtime) error {
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if rt.valid {
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return ErrRuntimeFinalized
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}
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rt.config.ImageDefaultTransport = defaultTransport
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return nil
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}
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}
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// WithSignaturePolicy specifies the path of a file which decides how trust is
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// managed for images we've pulled.
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// If this is not specified, the system default configuration will be used
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// instead
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func WithSignaturePolicy(path string) RuntimeOption {
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return func(rt *Runtime) error {
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if rt.valid {
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return ErrRuntimeFinalized
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}
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rt.config.SignaturePolicyPath = path
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return nil
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}
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}
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// WithStateType sets the backing state implementation for libpod
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// Please note that information is not portable between backing states
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// As such, if this differs between two libpods running on the same system,
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// they will not share containers, and unspecified behavior may occur
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func WithStateType(storeType RuntimeStateStore) RuntimeOption {
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return func(rt *Runtime) error {
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if rt.valid {
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return ErrRuntimeFinalized
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}
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if storeType == InvalidStateStore {
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return errors.Wrapf(ErrInvalidArg, "must provide a valid state store type")
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}
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rt.config.StateType = storeType
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return nil
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}
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}
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// WithOCIRuntime specifies an OCI runtime to use for running containers
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func WithOCIRuntime(runtimePath string) RuntimeOption {
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return func(rt *Runtime) error {
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if rt.valid {
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return ErrRuntimeFinalized
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}
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if runtimePath == "" {
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return errors.Wrapf(ErrInvalidArg, "must provide a valid path")
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}
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rt.config.RuntimePath = []string{runtimePath}
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return nil
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}
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}
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// WithConmonPath specifies the path to the conmon binary which manages the
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// runtime
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func WithConmonPath(path string) RuntimeOption {
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return func(rt *Runtime) error {
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if rt.valid {
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return ErrRuntimeFinalized
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}
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if path == "" {
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return errors.Wrapf(ErrInvalidArg, "must provide a valid path")
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}
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rt.config.ConmonPath = []string{path}
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return nil
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}
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}
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// WithConmonEnv specifies the environment variable list for the conmon process
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func WithConmonEnv(environment []string) RuntimeOption {
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return func(rt *Runtime) error {
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if rt.valid {
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return ErrRuntimeFinalized
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}
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rt.config.ConmonEnvVars = make([]string, len(environment))
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copy(rt.config.ConmonEnvVars, environment)
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return nil
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}
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}
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// WithCgroupManager specifies the manager implementation name which is used to
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// handle cgroups for containers
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// Current valid values are "cgroupfs" and "systemd"
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func WithCgroupManager(manager string) RuntimeOption {
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return func(rt *Runtime) error {
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if rt.valid {
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return ErrRuntimeFinalized
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}
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rt.config.CgroupManager = manager
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return nil
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}
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}
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// WithStaticDir sets the directory that static runtime files which persist
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// across reboots will be stored
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func WithStaticDir(dir string) RuntimeOption {
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return func(rt *Runtime) error {
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if rt.valid {
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return ErrRuntimeFinalized
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}
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rt.config.StaticDir = dir
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return nil
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}
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}
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// WithTmpDir sets the directory that temporary runtime files which are not
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// expected to survive across reboots will be stored
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// This should be located on a tmpfs mount (/tmp or /var/run for example)
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func WithTmpDir(dir string) RuntimeOption {
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return func(rt *Runtime) error {
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if rt.valid {
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return ErrRuntimeFinalized
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}
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rt.config.TmpDir = dir
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return nil
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}
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}
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// WithMaxLogSize sets the maximum size of container logs
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// Positive sizes are limits in bytes, -1 is unlimited
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func WithMaxLogSize(limit int64) RuntimeOption {
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return func(rt *Runtime) error {
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if rt.valid {
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return ErrRuntimeFinalized
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}
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rt.config.MaxLogSize = limit
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return nil
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}
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}
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// WithNoPivotRoot sets the runtime to use MS_MOVE instead of PIVOT_ROOT when
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// starting containers
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func WithNoPivotRoot(noPivot bool) RuntimeOption {
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return func(rt *Runtime) error {
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if rt.valid {
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return ErrRuntimeFinalized
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}
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rt.config.NoPivotRoot = true
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return nil
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}
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}
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// WithCNIConfigDir sets the CNI configuration directory
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func WithCNIConfigDir(dir string) RuntimeOption {
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return func(rt *Runtime) error {
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if rt.valid {
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return ErrRuntimeFinalized
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}
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rt.config.CNIConfigDir = dir
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return nil
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}
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}
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// WithCNIPluginDir sets the CNI plugins directory
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func WithCNIPluginDir(dir string) RuntimeOption {
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return func(rt *Runtime) error {
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if rt.valid {
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return ErrRuntimeFinalized
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}
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rt.config.CNIPluginDir = []string{dir}
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return nil
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}
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}
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// Container Creation Options
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// WithShmDir sets the directory that should be mounted on /dev/shm
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func WithShmDir(dir string) CtrCreateOption {
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return func(ctr *Container) error {
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if ctr.valid {
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return ErrCtrFinalized
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}
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ctr.config.ShmDir = dir
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return nil
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}
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}
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// WithShmSize sets the size of /dev/shm tmpfs mount
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func WithShmSize(size int64) CtrCreateOption {
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return func(ctr *Container) error {
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if ctr.valid {
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return ErrCtrFinalized
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}
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ctr.config.ShmSize = size
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return nil
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}
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}
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// WithPrivileged sets the privileged flag in the container runtime
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func WithPrivileged(privileged bool) CtrCreateOption {
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return func(ctr *Container) error {
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if ctr.valid {
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return ErrCtrFinalized
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}
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ctr.config.Privileged = privileged
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return nil
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}
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}
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// WithSELinuxLabels sets the mount label for SELinux
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func WithSELinuxLabels(processLabel, mountLabel string) CtrCreateOption {
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return func(ctr *Container) error {
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if ctr.valid {
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return ErrCtrFinalized
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}
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ctr.config.ProcessLabel = processLabel
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ctr.config.MountLabel = mountLabel
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return nil
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}
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}
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// WithUser sets the user identity field in configutation
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// Valid uses [user | user:group | uid | uid:gid | user:gid | uid:group ]
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func WithUser(user string) CtrCreateOption {
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return func(ctr *Container) error {
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if ctr.valid {
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return ErrCtrFinalized
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}
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ctr.config.User = user
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return nil
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}
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}
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// WithRootFSFromImage sets up a fresh root filesystem using the given image
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// If useImageConfig is specified, image volumes, environment variables, and
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// other configuration from the image will be added to the config
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// TODO: Replace image name and ID with a libpod.Image struct when that is finished
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func WithRootFSFromImage(imageID string, imageName string, useImageVolumes bool) CtrCreateOption {
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return func(ctr *Container) error {
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if ctr.valid {
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return ErrCtrFinalized
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}
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if ctr.config.RootfsImageID != "" || ctr.config.RootfsImageName != "" {
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return errors.Wrapf(ErrInvalidArg, "container already configured with root filesystem")
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}
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ctr.config.RootfsImageID = imageID
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ctr.config.RootfsImageName = imageName
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ctr.config.ImageVolumes = useImageVolumes
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return nil
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}
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}
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// WithStdin keeps stdin on the container open to allow interaction
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func WithStdin() CtrCreateOption {
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return func(ctr *Container) error {
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if ctr.valid {
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return ErrCtrFinalized
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}
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ctr.config.Stdin = true
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return nil
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}
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}
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// WithPod adds the container to a pod
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// Containers which join a pod can only join the namespaces of other containers
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// in the same pod
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func (r *Runtime) WithPod(pod *Pod) CtrCreateOption {
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return func(ctr *Container) error {
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if ctr.valid {
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return ErrCtrFinalized
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}
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if pod == nil {
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return ErrInvalidArg
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}
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ctr.config.Pod = pod.ID()
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return nil
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}
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}
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// WithLabels adds labels to the container
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func WithLabels(labels map[string]string) CtrCreateOption {
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return func(ctr *Container) error {
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if ctr.valid {
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return ErrCtrFinalized
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}
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ctr.config.Labels = make(map[string]string)
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for key, value := range labels {
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ctr.config.Labels[key] = value
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}
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return nil
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}
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}
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// WithName sets the container's name
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func WithName(name string) CtrCreateOption {
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return func(ctr *Container) error {
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if ctr.valid {
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return ErrCtrFinalized
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}
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// Check the name against a regex
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if !nameRegex.MatchString(name) {
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return errors.Wrapf(ErrInvalidArg, "name must match regex [a-zA-Z0-9_-]+")
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}
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ctr.config.Name = name
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return nil
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}
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}
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// WithStopSignal sets the signal that will be sent to stop the container
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func WithStopSignal(signal syscall.Signal) CtrCreateOption {
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return func(ctr *Container) error {
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if ctr.valid {
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return ErrCtrFinalized
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}
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if signal == 0 {
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return errors.Wrapf(ErrInvalidArg, "stop signal cannot be 0")
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} else if signal > 64 {
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return errors.Wrapf(ErrInvalidArg, "stop signal cannot be greater than 64 (SIGRTMAX)")
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}
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ctr.config.StopSignal = uint(signal)
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return nil
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}
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}
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// WithStopTimeout sets the time to after initial stop signal is sent to container, before sending the kill signal
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func WithStopTimeout(timeout uint) CtrCreateOption {
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return func(ctr *Container) error {
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if ctr.valid {
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return ErrCtrFinalized
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}
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ctr.config.StopTimeout = timeout
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return nil
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}
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}
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// WithIPCNSFrom indicates the the container should join the IPC namespace of
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// the given container
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// If the container has joined a pod, it can only join the namespaces of
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// containers in the same pod
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func WithIPCNSFrom(nsCtr *Container) CtrCreateOption {
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return func(ctr *Container) error {
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if ctr.valid {
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return ErrCtrFinalized
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}
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if !nsCtr.valid {
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return ErrCtrRemoved
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}
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if nsCtr.ID() == ctr.ID() {
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return errors.Wrapf(ErrInvalidArg, "must specify another container")
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}
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if ctr.config.Pod != "" && nsCtr.config.Pod != ctr.config.Pod {
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return errors.Wrapf(ErrInvalidArg, "container has joined pod %s and dependency container %s is not a member of the pod", ctr.config.Pod, nsCtr.ID())
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}
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ctr.config.IPCNsCtr = nsCtr.ID()
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return nil
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}
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}
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// WithMountNSFrom indicates the the container should join the mount namespace
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// of the given container
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// If the container has joined a pod, it can only join the namespaces of
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// containers in the same pod
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func WithMountNSFrom(nsCtr *Container) CtrCreateOption {
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return func(ctr *Container) error {
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if ctr.valid {
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return ErrCtrFinalized
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}
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if !nsCtr.valid {
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return ErrCtrRemoved
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}
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if nsCtr.ID() == ctr.ID() {
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return errors.Wrapf(ErrInvalidArg, "must specify another container")
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}
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if ctr.config.Pod != "" && nsCtr.config.Pod != ctr.config.Pod {
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return errors.Wrapf(ErrInvalidArg, "container has joined pod %s and dependency container %s is not a member of the pod", ctr.config.Pod, nsCtr.ID())
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}
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ctr.config.MountNsCtr = nsCtr.ID()
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return nil
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}
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}
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// WithNetNSFrom indicates the the container should join the network namespace
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// of the given container
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// If the container has joined a pod, it can only join the namespaces of
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// containers in the same pod
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func WithNetNSFrom(nsCtr *Container) CtrCreateOption {
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return func(ctr *Container) error {
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if ctr.valid {
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return ErrCtrFinalized
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}
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if !nsCtr.valid {
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return ErrCtrRemoved
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}
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if nsCtr.ID() == ctr.ID() {
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return errors.Wrapf(ErrInvalidArg, "must specify another container")
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}
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if ctr.config.CreateNetNS {
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return errors.Wrapf(ErrInvalidArg, "cannot join another container's net ns as we are making a new net ns")
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}
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if ctr.config.Pod != "" && nsCtr.config.Pod != ctr.config.Pod {
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return errors.Wrapf(ErrInvalidArg, "container has joined pod %s and dependency container %s is not a member of the pod", ctr.config.Pod, nsCtr.ID())
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}
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ctr.config.NetNsCtr = nsCtr.ID()
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return nil
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}
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}
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// WithPIDNSFrom indicates the the container should join the PID namespace of
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// the given container
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// If the container has joined a pod, it can only join the namespaces of
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// containers in the same pod
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func WithPIDNSFrom(nsCtr *Container) CtrCreateOption {
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return func(ctr *Container) error {
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if ctr.valid {
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return ErrCtrFinalized
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}
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if !nsCtr.valid {
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return ErrCtrRemoved
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}
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if nsCtr.ID() == ctr.ID() {
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return errors.Wrapf(ErrInvalidArg, "must specify another container")
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}
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if ctr.config.Pod != "" && nsCtr.config.Pod != ctr.config.Pod {
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return errors.Wrapf(ErrInvalidArg, "container has joined pod %s and dependency container %s is not a member of the pod", ctr.config.Pod, nsCtr.ID())
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}
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ctr.config.PIDNsCtr = nsCtr.ID()
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return nil
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}
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}
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// WithUserNSFrom indicates the the container should join the user namespace of
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// the given container
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// If the container has joined a pod, it can only join the namespaces of
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// containers in the same pod
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func WithUserNSFrom(nsCtr *Container) CtrCreateOption {
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return func(ctr *Container) error {
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if ctr.valid {
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return ErrCtrFinalized
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}
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if !nsCtr.valid {
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return ErrCtrRemoved
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}
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if nsCtr.ID() == ctr.ID() {
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return errors.Wrapf(ErrInvalidArg, "must specify another container")
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}
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if ctr.config.Pod != "" && nsCtr.config.Pod != ctr.config.Pod {
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return errors.Wrapf(ErrInvalidArg, "container has joined pod %s and dependency container %s is not a member of the pod", ctr.config.Pod, nsCtr.ID())
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}
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ctr.config.UserNsCtr = nsCtr.ID()
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return nil
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}
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}
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// WithUTSNSFrom indicates the the container should join the UTS namespace of
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// the given container
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// If the container has joined a pod, it can only join the namespaces of
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// containers in the same pod
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func WithUTSNSFrom(nsCtr *Container) CtrCreateOption {
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return func(ctr *Container) error {
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if ctr.valid {
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return ErrCtrFinalized
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}
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if !nsCtr.valid {
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return ErrCtrRemoved
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}
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|
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if nsCtr.ID() == ctr.ID() {
|
|
return errors.Wrapf(ErrInvalidArg, "must specify another container")
|
|
}
|
|
|
|
if ctr.config.Pod != "" && nsCtr.config.Pod != ctr.config.Pod {
|
|
return errors.Wrapf(ErrInvalidArg, "container has joined pod %s and dependency container %s is not a member of the pod", ctr.config.Pod, nsCtr.ID())
|
|
}
|
|
|
|
ctr.config.UTSNsCtr = nsCtr.ID()
|
|
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// WithCgroupNSFrom indicates the the container should join the CGroup namespace
|
|
// of the given container
|
|
// If the container has joined a pod, it can only join the namespaces of
|
|
// containers in the same pod
|
|
func WithCgroupNSFrom(nsCtr *Container) CtrCreateOption {
|
|
return func(ctr *Container) error {
|
|
if ctr.valid {
|
|
return ErrCtrFinalized
|
|
}
|
|
|
|
if !nsCtr.valid {
|
|
return ErrCtrRemoved
|
|
}
|
|
|
|
if nsCtr.ID() == ctr.ID() {
|
|
return errors.Wrapf(ErrInvalidArg, "must specify another container")
|
|
}
|
|
|
|
if ctr.config.Pod != "" && nsCtr.config.Pod != ctr.config.Pod {
|
|
return errors.Wrapf(ErrInvalidArg, "container has joined pod %s and dependency container %s is not a member of the pod", ctr.config.Pod, nsCtr.ID())
|
|
}
|
|
|
|
ctr.config.CgroupNsCtr = nsCtr.ID()
|
|
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// WithNetNS indicates that the container should be given a new network
|
|
// namespace with a minimal configuration
|
|
// An optional array of port mappings can be provided
|
|
// Conflicts with WithNetNSFrom()
|
|
func WithNetNS(portMappings []ocicni.PortMapping) CtrCreateOption {
|
|
return func(ctr *Container) error {
|
|
if ctr.valid {
|
|
return ErrCtrFinalized
|
|
}
|
|
|
|
if ctr.config.NetNsCtr != "" {
|
|
return errors.Wrapf(ErrInvalidArg, "container is already set to join another container's net ns, cannot create a new net ns")
|
|
}
|
|
|
|
ctr.config.CreateNetNS = true
|
|
ctr.config.PortMappings = portMappings
|
|
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// WithLogPath sets the path to the log file
|
|
func WithLogPath(path string) CtrCreateOption {
|
|
return func(ctr *Container) error {
|
|
if ctr.valid {
|
|
return ErrCtrFinalized
|
|
}
|
|
if path == "" {
|
|
return errors.Wrapf(ErrInvalidArg, "log path must be set")
|
|
}
|
|
|
|
ctr.config.LogPath = path
|
|
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// WithCgroupParent sets the Cgroup Parent of the new container
|
|
func WithCgroupParent(parent string) CtrCreateOption {
|
|
return func(ctr *Container) error {
|
|
if ctr.valid {
|
|
return ErrCtrFinalized
|
|
}
|
|
|
|
if parent == "" {
|
|
return errors.Wrapf(ErrInvalidArg, "cgroup parent cannot be empty")
|
|
}
|
|
|
|
ctr.config.CgroupParent = parent
|
|
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// Pod Creation Options
|
|
|
|
// WithPodName sets the name of the pod
|
|
func WithPodName(name string) PodCreateOption {
|
|
return func(pod *Pod) error {
|
|
if pod.valid {
|
|
return ErrPodFinalized
|
|
}
|
|
|
|
// Check the name against a regex
|
|
if !nameRegex.MatchString(name) {
|
|
return errors.Wrapf(ErrInvalidArg, "name must match regex [a-zA-Z0-9_-]+")
|
|
}
|
|
|
|
pod.config.Name = name
|
|
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// WithPodLabels sets the labels of a pod
|
|
func WithPodLabels(labels map[string]string) PodCreateOption {
|
|
return func(pod *Pod) error {
|
|
if pod.valid {
|
|
return ErrPodFinalized
|
|
}
|
|
|
|
pod.config.Labels = make(map[string]string)
|
|
for key, value := range labels {
|
|
pod.config.Labels[key] = value
|
|
}
|
|
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// WithDNSSearch sets the additional search domains of a container
|
|
func WithDNSSearch(searchDomains []string) CtrCreateOption {
|
|
return func(ctr *Container) error {
|
|
if ctr.valid {
|
|
return ErrCtrFinalized
|
|
}
|
|
ctr.config.DNSSearch = searchDomains
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// WithDNS sets additional name servers for the container
|
|
func WithDNS(dnsServers []string) CtrCreateOption {
|
|
return func(ctr *Container) error {
|
|
if ctr.valid {
|
|
return ErrCtrFinalized
|
|
}
|
|
var dns []net.IP
|
|
for _, i := range dnsServers {
|
|
result := net.ParseIP(i)
|
|
if result == nil {
|
|
return errors.Wrapf(ErrInvalidArg, "invalid IP address %s", i)
|
|
}
|
|
dns = append(dns, result)
|
|
}
|
|
ctr.config.DNSServer = dns
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// WithDNSOption sets addition dns options for the container
|
|
func WithDNSOption(dnsOptions []string) CtrCreateOption {
|
|
return func(ctr *Container) error {
|
|
if ctr.valid {
|
|
return ErrCtrFinalized
|
|
}
|
|
ctr.config.DNSOption = dnsOptions
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// WithHosts sets additional host:IP for the hosts file
|
|
func WithHosts(hosts []string) CtrCreateOption {
|
|
return func(ctr *Container) error {
|
|
if ctr.valid {
|
|
return ErrCtrFinalized
|
|
}
|
|
ctr.config.HostAdd = hosts
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// WithConmonPidFile specifies the path to the file that receives the pid of conmon
|
|
func WithConmonPidFile(path string) CtrCreateOption {
|
|
return func(ctr *Container) error {
|
|
if ctr.valid {
|
|
return ErrCtrFinalized
|
|
}
|
|
ctr.config.ConmonPidFile = path
|
|
return nil
|
|
}
|
|
}
|