From: Colin Vidal <colin@isc.org>
Date: Mon, 27 Oct 2025 21:15:39 +0000 (+0100)
Subject: new: dev: introduce cfg_obj_clone to clone a config tree
X-Git-Tag: v9.21.15~30
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d951cedd0213ac549756f529fd9fd5511e5f1c93;p=thirdparty%2Fbind9.git

new: dev: introduce cfg_obj_clone to clone a config tree

Introduce `cfg_obj_clone` which takes a `cfg_obj_t` node and clones it.
it allocates a new node, copies its scalar values and recursively
allocates child nodes, copying their scalar values as well and so on.

Internally, a new method `cfg_copyfunc_t` copy is added in `cfg_rep_t`,
which enables implementing a copy function specific for each
representation type a node can hold.

This is pre-require work for MR !11121 !11122 !11123

Merge branch 'colin/effective-config-clone' into 'main'

See merge request isc-projects/bind9!11124
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d951cedd0213ac549756f529fd9fd5511e5f1c93