Added XMLNS field setting in both places

weed/s3api/s3_constants/header.go

@@ -23,6 +23,11 @@ import (
 	"github.com/gorilla/mux"
 )
 
+// S3 XML namespace
+const (
+	S3Namespace = "http://s3.amazonaws.com/doc/2006-03-01/"
+)
+
 // Standard S3 HTTP request constants
 const (
 	// S3 storage class

weed/s3api/s3api_bucket_handlers_object_lock_config.go

@@ -86,6 +86,9 @@ func (s3a *S3ApiServer) GetObjectLockConfigurationHandler(w http.ResponseWriter,
 
 	// Check if we have cached Object Lock configuration
 	if bucketConfig.ObjectLockConfig != nil {
+		// Set namespace for S3 compatibility
+		bucketConfig.ObjectLockConfig.XMLNS = s3_constants.S3Namespace
+		
 		// Use cached configuration and marshal it to XML for response
 		marshaledXML, err := xml.Marshal(bucketConfig.ObjectLockConfig)
 		if err != nil {
@@ -139,6 +142,9 @@ func (s3a *S3ApiServer) GetObjectLockConfigurationHandler(w http.ResponseWriter,
 		// not just ObjectLockConfig, before resetting the TTL
 		s3a.updateBucketConfigCacheFromEntry(freshEntry)
 
+		// Set namespace for S3 compatibility
+		objectLockConfig.XMLNS = s3_constants.S3Namespace
+
 		// Marshal and return the configuration
 		marshaledXML, err := xml.Marshal(objectLockConfig)
 		if err != nil {

weed/s3api/s3api_object_retention.go

@@ -248,8 +248,8 @@ func (s3a *S3ApiServer) getObjectRetention(bucket, object, versionId string) (*O
 		return nil, ErrNoRetentionConfiguration
 	}
 
-	// Set namespace for S3 compatibility (matches MinIO behavior)
-	retention.XMLNS = "http://s3.amazonaws.com/doc/2006-03-01/"
+	// Set namespace for S3 compatibility
+	retention.XMLNS = s3_constants.S3Namespace
 	return retention, nil
 }
 
@@ -391,8 +391,8 @@ func (s3a *S3ApiServer) getObjectLegalHold(bucket, object, versionId string) (*O
 		return nil, ErrNoLegalHoldConfiguration
 	}
 
-	// Set namespace for S3 compatibility (matches MinIO behavior)
-	legalHold.XMLNS = "http://s3.amazonaws.com/doc/2006-03-01/"
+	// Set namespace for S3 compatibility
+	legalHold.XMLNS = s3_constants.S3Namespace
 	return legalHold, nil
 }