[Libguestfs] [PATCH hivex 11/19] lib: get_children: Use offset_list limits to limit length of returned lists.

From: "Richard W.M. Jones" <rjones(a)redhat.com&gt; This will allow us to change the function to work recursively, and still enforce these limits. --- lib/node.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/lib/node.c b/lib/node.c index 326b913..1255a84 100644 --- a/lib/node.c +++ b/lib/node.c @@ -229,6 +229,16 @@ _hivex_get_children (hive_h *h, hive_node_h node, goto error; } + /* Don't read mode child nodes than the declared number of subkeys. */ + _hivex_set_offset_list_limit (&children, nr_subkeys_in_nk); + + /* Pre-1.3.8 hivex did not limit the number of intermediate blocks + * it would return, and there is no obvious limit to use. However + * if we ever exceeded HIVEX_MAX_SUBKEYS then there's something + * fishy going on. + */ + _hivex_set_offset_list_limit (&blocks, HIVEX_MAX_SUBKEYS); + /* Preallocate space for the children. */ if (_hivex_grow_offset_list (&children, nr_subkeys_in_nk) == -1) goto error; -- 1.8.3.1