[Buildroot] [PATCH v3] package/systemd: register NSS plugins in nsswitch.conf

[Yann E. MORIN <yann.morin.1998@free.fr>]

Norbert, All,

On 2020-07-04 01:49 +0200, Norbert Lange spake thusly:
> This supports 4 plugins, each will be added at the right
> spot if enabled, based on the template coming with systemd.
[--SNIP--]
> Signed-off-by: Norbert Lange <nolange79@gmail.com>
> ---
> v3:
> *   basically a rewrite
> *   tested together with nss_mdns4 replacements
> ---
>  package/systemd/systemd.mk | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/package/systemd/systemd.mk b/package/systemd/systemd.mk
> index 8e01a0db5b..2e6c81bd75 100644
> --- a/package/systemd/systemd.mk
> +++ b/package/systemd/systemd.mk
> @@ -473,7 +473,27 @@ define SYSTEMD_INSTALL_MACHINEID_HOOK
>  	touch $(TARGET_DIR)/etc/machine-id
>  endef
>  
> +# anchor nss_resolve after files, if mymachines is also used, remove that first
> +# and add it back. this is necessary as other packages (mdns) move around
> +# the dns entry.
> +
> +define SYSTEMD_ADD_NSSCONFIG_HOOK
> +	$(SED) '/^passwd:/ {/systemd/! s/$$/ systemd/}' \
> +		-e '/^group:/ {/systemd/! s/$$/ systemd/}' \
> +		$(if $(BR2_PACKAGE_SYSTEMD_RESOLVED), \
> +			-e '/^hosts:/ s/[[:space:]]*mymachines//' \
> +			-e '/^hosts:/ {/resolve/! s/files/files resolve [!UNAVAIL=return]/}' ) \
> +		$(if $(BR2_PACKAGE_SYSTEMD_MYHOSTNAME), \
> +			-e '/^hosts:/ {/myhostname/! s/$$/ myhostname/}' ) \
> +		$(if $(BR2_PACKAGE_SYSTEMD_MACHINED), \
> +			-e '/^passwd:/ {/mymachines/! s/files/files mymachines/}' \
> +			-e '/^group:/ {/mymachines/! s/files/files [SUCCESS=merge] mymachines [SUCCESS=merge]/}' \
> +			-e '/^hosts:/ {/mymachines/! s/files/files mymachines/}' ) \
> +		$(TARGET_DIR)/etc/nsswitch.conf
> +endef
> +
>  SYSTEMD_POST_INSTALL_TARGET_HOOKS += \
> +	SYSTEMD_ADD_NSSCONFIG_HOOK \

As I already said: ths must be a target-finalize hook, not a
post-install hook.

Regards,
Yann E. MORIN.

>  	SYSTEMD_INSTALL_INIT_HOOK \
>  	SYSTEMD_INSTALL_MACHINEID_HOOK \
>  	SYSTEMD_INSTALL_RESOLVCONF_HOOK
> -- 
> 2.27.0
> 

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