Dont replace holes in sparse files with non-0 bytes when creating fla…

…sh images

Signed-off-by: Hudson Ayers <[email protected]>

util.c

@@ -570,7 +570,12 @@ int insert_image(struct image *image, struct image *sub,
 		image_error(image, "open %s: %s", infile, strerror(errno));
 		goto out;
 	}
-	ret = map_file_extents(image, infile, in_fd, size, &extents, &extent_count);
+	if (byte == 0) {
+		ret = map_file_extents(image, infile, in_fd, size, &extents, &extent_count);
+	} else {
+		/* Don't want to fill holes with non-0 bytes */
+		ret = whole_file_exent(size, &extents, &extent_count);
+	}
 	if (ret)
 		goto out;
 	image_debug(image, "copying %llu bytes from %s at offset %llu\n",