chore: allow mounting files from the host

Allow mounting files from host into extension services as per the [OCI spec](https://github.com/opencontainers/runtime-spec/blob/main/config.md#mounts) Signed-off-by: Noel Georgi <[email protected]>
siderolabs · Apr 21, 2022 · 51a68c3 · 51a68c3
1 parent f3e330a
commit 51a68c3
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/internal/app/machined/pkg/system/services/extension.go b/internal/app/machined/pkg/system/services/extension.go
@@ -6,6 +6,7 @@ package services
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"os"
 	"path/filepath"
@@ -102,6 +103,13 @@ func (svc *Extension) Runner(r runtime.Runtime) (runner.Runner, error) {
 	}
 
 	for _, mount := range svc.Spec.Container.Mounts {
+		if _, err := os.Stat(mount.Source); err == nil {
+			// already exists, skip
+			continue
+		} else if !errors.Is(err, os.ErrNotExist) {
+			return nil, err
+		}
+
 		if err := os.MkdirAll(mount.Source, 0o700); err != nil {
 			return nil, err
 		}