Add a copy function to the rb-tree implementation

If we use the rb-tree in libsquashfs objects, we need to be able
top copy an entire tree as part of the object.

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/rbtree.h b/include/rbtree.h
index 7fe1752..bbba711 100644
--- a/include/rbtree.h
+++ b/include/rbtree.h
@@ -49,6 +49,8 @@ SQFS_INTERNAL int rbtree_init(rbtree_t *tree, size_t keysize, size_t valuesize,
 
 SQFS_INTERNAL void rbtree_cleanup(rbtree_t *tree);
 
+SQFS_INTERNAL int rbtree_copy(const rbtree_t *tree, rbtree_t *out);
+
 SQFS_INTERNAL int rbtree_insert(rbtree_t *tree, const void *key,
 				const void *value);