Move rootless storage config into libpod

Previous commits ensured that we would use database-configured
paths if not explicitly overridden.

However, our runtime generation did unconditionally override
storage config, which made this useless.

Move rootless storage configuration setup to libpod, and change
storage setup so we only override if a setting is explicitly
set, so we can still override what we want.

Signed-off-by: Matthew Heon <mheon@redhat.com>

2 files changed, 24 insertions, 9 deletions

diff --git a/libpod/options.go b/libpod/options.go
index 6783e2a39..661bd8d91 100644
--- a/libpod/options.go
+++ b/libpod/options.go
@@ -29,18 +29,18 @@ func WithStorageConfig(config storage.StoreOptions) RuntimeOption {
 			return ErrRuntimeFinalized
 		}
 
-		rt.config.StorageConfig.RunRoot = config.RunRoot
 		if config.RunRoot != "" {
+			rt.config.StorageConfig.RunRoot = config.RunRoot
 			rt.configuredFrom.storageRunRootSet = true
 		}
 
-		rt.config.StorageConfig.GraphRoot = config.GraphRoot
 		if config.GraphRoot != "" {
+			rt.config.StorageConfig.GraphRoot = config.GraphRoot
 			rt.configuredFrom.storageGraphRootSet = true
 		}
 
-		rt.config.StorageConfig.GraphDriverName = config.GraphDriverName
 		if config.GraphDriverName != "" {
+			rt.config.StorageConfig.GraphDriverName = config.GraphDriverName
 			rt.configuredFrom.storageGraphDriverSet = true
 		}
 
@@ -51,14 +51,20 @@ func WithStorageConfig(config storage.StoreOptions) RuntimeOption {
 			rt.configuredFrom.libpodStaticDirSet = true
 		}
 
-		rt.config.StorageConfig.GraphDriverOptions = make([]string, len(config.GraphDriverOptions))
-		copy(rt.config.StorageConfig.GraphDriverOptions, config.GraphDriverOptions)
+		if config.GraphDriverOptions != nil {
+			rt.config.StorageConfig.GraphDriverOptions = make([]string, len(config.GraphDriverOptions))
+			copy(rt.config.StorageConfig.GraphDriverOptions, config.GraphDriverOptions)
+		}
 
-		rt.config.StorageConfig.UIDMap = make([]idtools.IDMap, len(config.UIDMap))
-		copy(rt.config.StorageConfig.UIDMap, config.UIDMap)
+		if config.UIDMap != nil {
+			rt.config.StorageConfig.UIDMap = make([]idtools.IDMap, len(config.UIDMap))
+			copy(rt.config.StorageConfig.UIDMap, config.UIDMap)
+		}
 
-		rt.config.StorageConfig.GIDMap = make([]idtools.IDMap, len(config.GIDMap))
-		copy(rt.config.StorageConfig.GIDMap, config.GIDMap)
+		if config.GIDMap != nil {
+			rt.config.StorageConfig.GIDMap = make([]idtools.IDMap, len(config.GIDMap))
+			copy(rt.config.StorageConfig.GIDMap, config.GIDMap)
+		}
 
 		return nil
 	}
diff --git a/libpod/runtime.go b/libpod/runtime.go
index e01fa781b..6a5d2ad39 100644
--- a/libpod/runtime.go
+++ b/libpod/runtime.go
@@ -278,6 +278,15 @@ func NewRuntime(options ...RuntimeOption) (runtime *Runtime, err error) {
 	deepcopier.Copy(defaultRuntimeConfig).To(runtime.config)
 	runtime.config.TmpDir = tmpDir
 
+	if rootless.IsRootless() {
+		// If we're rootless, override the default storage config
+		storageConf, err := util.GetDefaultRootlessStoreOptions()
+		if err != nil {
+			return nil, errors.Wrapf(err, "error retrieving rootless storage config")
+		}
+		runtime.config.StorageConfig = storageConf
+	}
+
 	configPath := ConfigPath
 	foundConfig := true
 	rootlessConfigPath := ""