X-Git-Url: http://git.tuebingen.mpg.de/?a=blobdiff_plain;f=buffer_tree.c;h=8aa66b6c7efce8a51e37ab2b52f4102f074d936d;hb=1d7a26dca86a639db694663738ccc01acaa88aba;hp=d12dcde7b5055b426f40ec116f0d5533213ef522;hpb=172e2ef5bc06aee5a68c37e10b1a8918895c23f9;p=paraslash.git

diff --git a/buffer_tree.c b/buffer_tree.c
index d12dcde7..8aa66b6c 100644
--- a/buffer_tree.c
+++ b/buffer_tree.c
@@ -745,6 +745,25 @@ void btr_log_tree(struct btr_node *btrn, int loglevel)
 	return log_tree_recursively(btrn, loglevel, 0);
 }
 
+/*
+ * \return \a root if \a name is \p NULL.
+ */
+struct btr_node *btr_search_node(const char *name, struct btr_node *root)
+{
+	struct btr_node *ch;
+
+	if (!name)
+		return root;
+	if (!strcmp(root->name, name))
+		return root;
+	FOR_EACH_CHILD(ch, root) {
+		struct btr_node *result = btr_search_node(name, ch);
+		if (result)
+			return result;
+	}
+	return NULL;
+}
+
 /** 640K ought to be enough for everybody ;) */
 #define BTRN_MAX_PENDING (640 * 1024)
 
@@ -753,6 +772,8 @@ int btr_node_status(struct btr_node *btrn, size_t min_iqs,
 {
 	size_t iqs;
 
+	if (!btrn)
+		return 0;
 	if (type != BTR_NT_LEAF) {
 		if (btr_no_children(btrn))
 			return -E_BTR_NO_CHILD;