Hi,
On Tue, Nov 19, 2019 at 12:21:21PM +0000, Alexander Mikhalitsyn wrote:
> Dear colleagues,
>
> In CRIU (Checkpoint/Restore In Userspace) we want to add support nft
> dump/restore. Initial implementation directly uses `nft list ruleset
> dumpfile`/`nft -f dumpfile` but it's not the best way because
> fork/exec is needed. We want to use some API. But after diving
> into libnftnl and nftables code I've realized that it's not so
> simple: in libnftnl there is some partial code for JSON support in
> nftables too. But as I see in libnftnl JSON doesn't fully
> supported. In nftables I've found tests/json_echo/run-test.py test
> that uses libnftables.so shared library that exports some
> functions for dumping/restoring full ruleset as JSON. After some
> googling, I've found that recently CLI and API interfaces related
> to JSON/XML exporting functions of nft have changed significantly.
> Question is: What API I could use to have confidence that in the
> near future it will not be deprecated? (We need only make *full*
> dump/restore nftables)
Please, see:
man 3 libnftables
