add System Compression support

[wimlib] / include / wimlib / apply.h

diff --git a/include/wimlib/apply.h b/include/wimlib/apply.h
index 071f5ed40173813d540cf6d6a3d5613065e02332..f36f0b3f0e188c89d6934a07d35b60598f53fd38 100644 (file)
--- a/include/wimlib/apply.h
+++ b/include/wimlib/apply.h
@@ -220,9 +220,10 @@ struct apply_operations {
 
        /*
         * Query whether the unnamed data stream of the specified file will be
-        * extracted as "externally backed".  If so, the extraction backend is
-        * assumed to handle this separately, and the common extraction code
-        * will not register a usage of the unnamed data stream's blob.
+        * extracted as "externally backed" from the WIM archive itself.  If so,
+        * then the extraction backend is assumed to handle this separately, and
+        * the common extraction code will not register a usage of the unnamed
+        * data stream's blob.
         *
         * This routine is optional.
         *
@@ -231,7 +232,7 @@ struct apply_operations {
         *      = 0 if the file will be externally backed.
         *      > 0 (wimlib error code) if another error occurred.
         */
-       int (*will_externally_back)(struct wim_dentry *dentry, struct apply_ctx *ctx);
+       int (*will_back_from_wim)(struct wim_dentry *dentry, struct apply_ctx *ctx);
 
        /*
         * Size of the backend-specific extraction context.  It must contain