[Buildroot] [PATCH] package/ebtables: install symlink to ebtables-legacy

[Baruch Siach <baruch@tkos.co.il>]

Hi Thomas,

On Tue, Feb 16 2021, Thomas De Schampheleire wrote:

> From: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
>
> Since the upgrade of ebtables from 2.0.10-4 to 2.0.11, there no longer is an
> 'ebtables' binary. It has been renamed to 'ebtables-legacy' and moved from
> '/sbin' to '/usr/sbin'. This change is part of the upstream change to
> integrate the functionality of ebtables (and arptables) in the iptables
> package, using the nf_tables kernel backend [1].
>
> Unfortunately, the renaming (and move) of the original 'ebtables' binary
> breaks existing scripts that are calling 'ebtables' or '/sbin/ebtables'.
> Therefore, add a symlink from the original path to 'ebtables-legacy'.
>
> However, do not provide this symlink if BR2_PACKAGE_IPTABLES_NFTABLES is
> enabled. In this case, the iptables package will build the new equivalent
> of ebtables -- a symlink to ebtables-legacy would cause conflicts.
>
> [1] https://wiki.nftables.org/wiki-nftables/index.php/Legacy_xtables_tools
>
> Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>

Acked-by: Baruch Siach <baruch@tkos.co.il>

Thanks,
baruch

> ---
>  package/ebtables/ebtables.mk | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/package/ebtables/ebtables.mk b/package/ebtables/ebtables.mk
> index 998f06f5f6..54932334c2 100644
> --- a/package/ebtables/ebtables.mk
> +++ b/package/ebtables/ebtables.mk
> @@ -33,4 +33,11 @@ endef
>  EBTABLES_POST_INSTALL_TARGET_HOOKS += EBTABLES_REMOVE_UTILS_RESTORE
>  endif
>  
> +ifeq ($(BR2_PACKAGE_IPTABLES_NFTABLES),)
> +define EBTABLES_INSTALL_LEGACY_SYMLINK
> +	ln -sf /usr/sbin/ebtables-legacy $(TARGET_DIR)/sbin/ebtables
> +endef
> +EBTABLES_POST_INSTALL_TARGET_HOOKS += EBTABLES_INSTALL_LEGACY_SYMLINK
> +endif
> +
>  $(eval $(autotools-package))


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