X-Git-Url: https://git.sven.stormbind.net/?p=sven%2Ffuse-exfat.git;a=blobdiff_plain;f=libexfat%2Fnode.c;h=bc342b780d59292b905ba43a755350bbaf45d82d;hp=cce1de7c0c93eeed5b96887e3f848bf5e369be4a;hb=c970b8dc781ddfc1fc6f7d3890babd2a8fbe028b;hpb=c1c45856c432c68749276ecbeff56c88f85bcd3e

diff --git a/libexfat/node.c b/libexfat/node.c
index cce1de7..bc342b7 100644
--- a/libexfat/node.c
+++ b/libexfat/node.c
@@ -905,6 +905,23 @@ int exfat_rename(struct exfat* ef, const char* old_path, const char* new_path)
 		exfat_put_node(ef, node);
 		return rc;
 	}
+
+	/* check that target is not a subdirectory of the source */
+	if (node->flags & EXFAT_ATTRIB_DIR)
+	{
+		struct exfat_node* p;
+
+		for (p = dir; p; p = p->parent)
+			if (node == p)
+			{
+				if (existing != NULL)
+					exfat_put_node(ef, existing);
+				exfat_put_node(ef, dir);
+				exfat_put_node(ef, node);
+				return -EINVAL;
+			}
+	}
+
 	if (existing != NULL)
 	{
 		/* remove target if it's not the same node as source */