diff options
Diffstat (limited to 'libpod/runtime.go')
| -rw-r--r-- | libpod/runtime.go | 185 |
1 files changed, 93 insertions, 92 deletions
diff --git a/libpod/runtime.go b/libpod/runtime.go index fa208a2ca..b3b75d791 100644 --- a/libpod/runtime.go +++ b/libpod/runtime.go @@ -241,6 +241,12 @@ type runtimeConfiguredFrom struct { libpodStaticDirSet bool libpodTmpDirSet bool volPathSet bool + conmonPath bool + conmonEnvVars bool + ociRuntimes bool + runtimePath bool + cniPluginDir bool + noPivotRoot bool } var ( @@ -324,6 +330,22 @@ func SetXdgRuntimeDir(val string) error { // NewRuntime creates a new container runtime // Options can be passed to override the default configuration for the runtime func NewRuntime(options ...RuntimeOption) (runtime *Runtime, err error) { + return newRuntimeFromConfig("", options...) +} + +// NewRuntimeFromConfig creates a new container runtime using the given +// configuration file for its default configuration. Passed RuntimeOption +// functions can be used to mutate this configuration further. +// An error will be returned if the configuration file at the given path does +// not exist or cannot be loaded +func NewRuntimeFromConfig(userConfigPath string, options ...RuntimeOption) (runtime *Runtime, err error) { + if userConfigPath == "" { + return nil, errors.New("invalid configuration file specified") + } + return newRuntimeFromConfig(userConfigPath, options...) +} + +func newRuntimeFromConfig(userConfigPath string, options ...RuntimeOption) (runtime *Runtime, err error) { runtime = new(Runtime) runtime.config = new(RuntimeConfig) runtime.configuredFrom = new(runtimeConfiguredFrom) @@ -358,11 +380,6 @@ func NewRuntime(options ...RuntimeOption) (runtime *Runtime, err error) { rootlessConfigPath = filepath.Join(home, ".config/containers/libpod.conf") - configPath = rootlessConfigPath - if _, err := os.Stat(configPath); err != nil { - foundConfig = false - } - runtimeDir, err := util.GetRootlessRuntimeDir() if err != nil { return nil, err @@ -374,6 +391,20 @@ func NewRuntime(options ...RuntimeOption) (runtime *Runtime, err error) { return nil, errors.Wrapf(err, "cannot set XDG_RUNTIME_DIR") } + } + + if userConfigPath != "" { + configPath = userConfigPath + if _, err := os.Stat(configPath); err != nil { + // If the user specified a config file, we must fail immediately + // when it doesn't exist + return nil, errors.Wrapf(err, "cannot stat %s", configPath) + } + } else if rootless.IsRootless() { + configPath = rootlessConfigPath + if _, err := os.Stat(configPath); err != nil { + foundConfig = false + } } else if _, err := os.Stat(OverrideConfigPath); err == nil { // Use the override configuration path configPath = OverrideConfigPath @@ -409,6 +440,24 @@ func NewRuntime(options ...RuntimeOption) (runtime *Runtime, err error) { if tmpConfig.VolumePath != "" { runtime.configuredFrom.volPathSet = true } + if tmpConfig.ConmonPath != nil { + runtime.configuredFrom.conmonPath = true + } + if tmpConfig.ConmonEnvVars != nil { + runtime.configuredFrom.conmonEnvVars = true + } + if tmpConfig.OCIRuntimes != nil { + runtime.configuredFrom.ociRuntimes = true + } + if tmpConfig.RuntimePath != nil { + runtime.configuredFrom.runtimePath = true + } + if tmpConfig.CNIPluginDir != nil { + runtime.configuredFrom.cniPluginDir = true + } + if tmpConfig.NoPivotRoot { + runtime.configuredFrom.noPivotRoot = true + } if _, err := toml.Decode(string(contents), runtime.config); err != nil { return nil, errors.Wrapf(err, "error decoding configuration file %s", configPath) @@ -428,12 +477,24 @@ func NewRuntime(options ...RuntimeOption) (runtime *Runtime, err error) { } // Cherry pick the settings we want from the global configuration - runtime.config.ConmonPath = tmpConfig.ConmonPath - runtime.config.ConmonEnvVars = tmpConfig.ConmonEnvVars - runtime.config.OCIRuntimes = tmpConfig.OCIRuntimes - runtime.config.RuntimePath = tmpConfig.RuntimePath - runtime.config.CNIPluginDir = tmpConfig.CNIPluginDir - runtime.config.NoPivotRoot = tmpConfig.NoPivotRoot + if !runtime.configuredFrom.conmonPath { + runtime.config.ConmonPath = tmpConfig.ConmonPath + } + if !runtime.configuredFrom.conmonEnvVars { + runtime.config.ConmonEnvVars = tmpConfig.ConmonEnvVars + } + if !runtime.configuredFrom.ociRuntimes { + runtime.config.OCIRuntimes = tmpConfig.OCIRuntimes + } + if !runtime.configuredFrom.runtimePath { + runtime.config.RuntimePath = tmpConfig.RuntimePath + } + if !runtime.configuredFrom.cniPluginDir { + runtime.config.CNIPluginDir = tmpConfig.CNIPluginDir + } + if !runtime.configuredFrom.noPivotRoot { + runtime.config.NoPivotRoot = tmpConfig.NoPivotRoot + } break } } @@ -444,101 +505,39 @@ func NewRuntime(options ...RuntimeOption) (runtime *Runtime, err error) { return nil, errors.Wrapf(err, "error configuring runtime") } } - if err := makeRuntime(runtime); err != nil { - return nil, err - } - - if !foundConfig && rootlessConfigPath != "" { - os.MkdirAll(filepath.Dir(rootlessConfigPath), 0755) - file, err := os.OpenFile(rootlessConfigPath, os.O_RDWR|os.O_CREATE|os.O_EXCL, 0666) - if err != nil && !os.IsExist(err) { - return nil, errors.Wrapf(err, "cannot open file %s", rootlessConfigPath) - } - if err == nil { - defer file.Close() - enc := toml.NewEncoder(file) - if err := enc.Encode(runtime.config); err != nil { - os.Remove(rootlessConfigPath) + if rootlessConfigPath != "" { + // storage.conf + storageConfFile := util.StorageConfigFile() + if _, err := os.Stat(storageConfFile); os.IsNotExist(err) { + if err := util.WriteStorageConfigFile(&runtime.config.StorageConfig, storageConfFile); err != nil { + return nil, errors.Wrapf(err, "cannot write config file %s", storageConfFile) } } - } - return runtime, nil -} - -// NewRuntimeFromConfig creates a new container runtime using the given -// configuration file for its default configuration. Passed RuntimeOption -// functions can be used to mutate this configuration further. -// An error will be returned if the configuration file at the given path does -// not exist or cannot be loaded -func NewRuntimeFromConfig(configPath string, options ...RuntimeOption) (runtime *Runtime, err error) { - runtime = new(Runtime) - runtime.config = new(RuntimeConfig) - runtime.configuredFrom = new(runtimeConfiguredFrom) - - // Set three fields not in the TOML config - runtime.config.StateType = defaultRuntimeConfig.StateType - runtime.config.OCIRuntime = defaultRuntimeConfig.OCIRuntime - - storageConf, err := util.GetDefaultStoreOptions() - if err != nil { - return nil, errors.Wrapf(err, "error retrieving storage config") - } - runtime.config.StorageConfig = storageConf - runtime.config.StaticDir = filepath.Join(storageConf.GraphRoot, "libpod") - runtime.config.VolumePath = filepath.Join(storageConf.GraphRoot, "volumes") - - tmpDir, err := getDefaultTmpDir() - if err != nil { - return nil, err - } - runtime.config.TmpDir = tmpDir - if rootless.IsRootless() { - runtimeDir, err := util.GetRootlessRuntimeDir() - if err != nil { - return nil, err - } - // containers/image uses XDG_RUNTIME_DIR to locate the auth file. - // So make sure the env variable is set. - if err := SetXdgRuntimeDir(runtimeDir); err != nil { - return nil, errors.Wrapf(err, "cannot set XDG_RUNTIME_DIR") - } - } - - // Check to see if the given configuration file exists - if _, err := os.Stat(configPath); err != nil { - return nil, errors.Wrapf(err, "error checking existence of configuration file %s", configPath) - } - - // Read contents of the config file - contents, err := ioutil.ReadFile(configPath) - if err != nil { - return nil, errors.Wrapf(err, "error reading configuration file %s", configPath) - } - - // Decode configuration file - if _, err := toml.Decode(string(contents), runtime.config); err != nil { - return nil, errors.Wrapf(err, "error decoding configuration from file %s", configPath) - } - // Overwrite the config with user-given configuration options - for _, opt := range options { - if err := opt(runtime); err != nil { - return nil, errors.Wrapf(err, "error configuring runtime") + if !foundConfig { + os.MkdirAll(filepath.Dir(rootlessConfigPath), 0755) + file, err := os.OpenFile(rootlessConfigPath, os.O_RDWR|os.O_CREATE|os.O_EXCL, 0666) + if err != nil && !os.IsExist(err) { + return nil, errors.Wrapf(err, "cannot open file %s", rootlessConfigPath) + } + if err == nil { + defer file.Close() + enc := toml.NewEncoder(file) + if err := enc.Encode(runtime.config); err != nil { + os.Remove(rootlessConfigPath) + } + } } } - if err := makeRuntime(runtime); err != nil { return nil, err } - return runtime, nil } // Make a new runtime based on the given configuration // Sets up containers/storage, state store, OCI runtime func makeRuntime(runtime *Runtime) (err error) { - runtime.config.EventsLogFilePath = filepath.Join(runtime.config.TmpDir, "events", "events.log") - // Backward compatibility for `runtime_path` if runtime.config.RuntimePath != nil { // Don't print twice in rootless mode. @@ -697,6 +696,8 @@ func makeRuntime(runtime *Runtime) (err error) { runtime.config.VolumePath = dbConfig.VolumePath } + runtime.config.EventsLogFilePath = filepath.Join(runtime.config.TmpDir, "events", "events.log") + logrus.Debugf("Using graph driver %s", runtime.config.StorageConfig.GraphDriverName) logrus.Debugf("Using graph root %s", runtime.config.StorageConfig.GraphRoot) logrus.Debugf("Using run root %s", runtime.config.StorageConfig.RunRoot) |