fix: all the linter issues reported

api-datatypes.go

@@ -43,7 +43,7 @@ type StringMap map[string]string
 // if m is nil it can be initialized, which is often the case if m is
 // nested in another xml structural. This is also why the first thing done
 // on the first line is initialize it.
-func (m *StringMap) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+func (m *StringMap) UnmarshalXML(d *xml.Decoder, _ xml.StartElement) error {
 	*m = StringMap{}
 	type Item struct {
 		Key   string

api-remove.go

@@ -235,7 +235,7 @@ func generateRemoveMultiObjectsRequest(objects []ObjectInfo) []byte {
 
 // processRemoveMultiObjectsResponse - parse the remove multi objects web service
 // and return the success/failure result status for each object
-func processRemoveMultiObjectsResponse(body io.Reader, objects []ObjectInfo, resultCh chan<- RemoveObjectResult) {
+func processRemoveMultiObjectsResponse(body io.Reader, resultCh chan<- RemoveObjectResult) {
 	// Parse multi delete XML response
 	rmResult := &deleteMultiObjectsResult{}
 	err := xmlDecoder(body, rmResult)
@@ -459,7 +459,7 @@ func (c *Client) removeObjects(ctx context.Context, bucketName string, objectsCh
 		}
 
 		// Process multiobjects remove xml response
-		processRemoveMultiObjectsResponse(resp.Body, batch, resultCh)
+		processRemoveMultiObjectsResponse(resp.Body, resultCh)
 
 		closeResponse(resp)
 	}

api-s3-datatypes.go

@@ -110,7 +110,7 @@ type ListVersionsResult struct {
 // UnmarshalXML is a custom unmarshal code for the response of ListObjectVersions, the custom
 // code will unmarshal <Version> and <DeleteMarker> tags and save them in Versions field to
 // preserve the lexical order of the listing.
-func (l *ListVersionsResult) UnmarshalXML(d *xml.Decoder, start xml.StartElement) (err error) {
+func (l *ListVersionsResult) UnmarshalXML(d *xml.Decoder, _ xml.StartElement) (err error) {
 	for {
 		// Read tokens from the XML document in a stream.
 		t, err := d.Token()

pkg/s3utils/utils.go

@@ -339,12 +339,12 @@ func EncodePath(pathName string) string {
 			encodedPathname.WriteRune(s)
 			continue
 		default:
-			len := utf8.RuneLen(s)
-			if len < 0 {
+			l := utf8.RuneLen(s)
+			if l < 0 {
 				// if utf8 cannot convert return the same string as is
 				return pathName
 			}
-			u := make([]byte, len)
+			u := make([]byte, l)
 			utf8.EncodeRune(u, s)
 			for _, r := range u {
 				hex := hex.EncodeToString([]byte{r})