Support committing changed mounted WIM image as new image

[wimlib] / include / wimlib / lookup_table.h

diff --git a/include/wimlib/lookup_table.h b/include/wimlib/lookup_table.h
index a2feebf7e8b7959ee87adc11c0d25bd5945725a0..a169e3934985f995b80ae34a908def3fe35ab3ee 100644 (file)
--- a/include/wimlib/lookup_table.h
+++ b/include/wimlib/lookup_table.h
@@ -136,7 +136,12 @@ struct wim_lookup_table_entry {
         * be extracted.
         *
         * During image export, this is set to the number of references of this
-        * stream that originated from the source WIM.  */
+        * stream that originated from the source WIM.
+        *
+        * When mounting a WIM image read-write, this is set to the number of
+        * extra references to this stream preemptively taken to allow later
+        * saving the modified image as a new image and leaving the original
+        * image alone.  */
        u32 out_refcnt;
 
 #ifdef WITH_FUSE
@@ -225,6 +230,9 @@ struct wim_lookup_table_entry {
 
                /* Links streams being exported.  */
                struct list_head export_stream_list;
+
+               /* Links original list of streams in the read-write mounted image.  */
+               struct list_head orig_stream_list;
        };
 
        /* Links streams that are still unhashed after being been added to a