X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=src%2Fwim.c;h=4a8e6a8be828c8a5282a0993ea96daf4a0f8293e;hp=9e73c7617a9b16b7e4b376338058ff0dc0c10b44;hb=4b8dbcb1723bacdd692ea57184cb49ce3d2b7774;hpb=9aa9a387906341315fab3f097fdadb3a76fcf280

diff --git a/src/wim.c b/src/wim.c
index 9e73c761..4a8e6a8b 100644
--- a/src/wim.c
+++ b/src/wim.c
@@ -676,12 +676,15 @@ int
 can_modify_wim(WIMStruct *wim)
 {
 	if (wim->hdr.total_parts != 1) {
-		if (wim->filename)
-			ERROR("Cannot modify \"%"TS"\": is a split WIM!", wim->filename);
-		else
-			ERROR("Cannot modify a split WIM!");
+		ERROR("Cannot modify \"%"TS"\": is part of a spanned set",
+		      wim->filename);
 		return WIMLIB_ERR_SPLIT_UNSUPPORTED;
 	}
+	if (wim->hdr.flags & WIM_HDR_FLAG_READONLY) {
+		ERROR("Cannot modify \"%"TS"\": is marked read-only",
+		      wim->filename);
+		return WIMLIB_ERR_WIM_IS_MARKED_READONLY;
+	}
 	return 0;
 }