[image] Split image_strip_suffix() out from image_extract()

Signed-off-by: Michael Brown <[email protected]>

src/core/archive.c

@@ -43,7 +43,6 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
  */
 int image_extract ( struct image *image, const char *name,
 		    struct image **extracted ) {
-	char *dot;
 	int rc;
 
 	/* Check that this image can be used to extract an archive image */
@@ -66,10 +65,8 @@ int image_extract ( struct image *image, const char *name,
 	}
 
 	/* Strip any archive or compression suffix from implicit name */
-	if ( ( ! name ) && ( (*extracted)->name ) &&
-	     ( ( dot = strrchr ( (*extracted)->name, '.' ) ) != NULL ) ) {
-		*dot = '\0';
-	}
+	if ( ! name )
+		image_strip_suffix ( *extracted );
 
 	/* Try extracting archive image */
 	if ( ( rc = image->type->extract ( image, *extracted ) ) != 0 ) {

src/core/image.c

@@ -172,6 +172,25 @@ int image_set_name ( struct image *image, const char *name ) {
 	return 0;
 }
 
+/**
+ * Strip dot suffix from image name, if present
+ *
+ * @v image		Image
+ * @ret sep		Position of old dot separator, or NULL
+ */
+char * image_strip_suffix ( struct image *image ) {
+	char *dot;
+
+	/* Locate and strip suffix, if present */
+	if ( image->name &&
+	     ( ( dot = strrchr ( image->name, '.' ) ) != NULL ) ) {
+		*dot = '\0';
+		return dot;
+	}
+
+	return NULL;
+}
+
 /**
  * Set image command line
  *

src/include/ipxe/image.h

@@ -188,6 +188,7 @@ static inline struct image * first_image ( void ) {
 extern struct image * alloc_image ( struct uri *uri );
 extern int image_set_uri ( struct image *image, struct uri *uri );
 extern int image_set_name ( struct image *image, const char *name );
+extern char * image_strip_suffix ( struct image *image );
 extern int image_set_cmdline ( struct image *image, const char *cmdline );
 extern int image_set_len ( struct image *image, size_t len );
 extern int image_set_data ( struct image *image, userptr_t data, size_t len );