[OE-core] [PATCH V3 3/3] usersettings.bbclass: add a new bbclass

[Paul Eggleton]

On Thursday 11 July 2013 19:11:39 Qi.Chen at windriver.com wrote:
> From: Chen Qi <Qi.Chen at windriver.com>
> 
> This class is dedicated to image level user/group configuration.
> It inherits userbase.bbclass.
> 
> Users need to inherit this class in their layers or local.conf to
> make the setting of USER_GROUP_SETTINGS effective.
> 
> For detailed configuration format of USER_GROUP_SETTINGS, please
> refer to local.conf.sample.extended.
> 
> [YOCTO #4074]
> 
> Signed-off-by: Chen Qi <Qi.Chen at windriver.com>
> ---
>  meta/classes/usersettings.bbclass |   48
> +++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+)
>  create mode 100644 meta/classes/usersettings.bbclass
> 
> diff --git a/meta/classes/usersettings.bbclass
> b/meta/classes/usersettings.bbclass new file mode 100644
> index 0000000..e5a5156
> --- /dev/null
> +++ b/meta/classes/usersettings.bbclass
> @@ -0,0 +1,48 @@
> +# This bbclass is mainly used for image level user/group configuration.
> +# Inherit this class if you want to make USER_GROUP_SETTINGS effective.
> +inherit userbase
> +
> +IMAGE_INSTALL_append += "${@['', 'base-passwd shadow'][bool(d.getVar('USER_GROUP_SETTINGS', True))]}"

This is a bit ugly. We should avoid using _append += since it is confusing,
and we have base_conditional for things like this. I'd suggest:

IMAGE_INSTALL_append = "${@base_conditional('USER_GROUP_SETTINGS', '1', ' base-passwd shadow', '', d)}"

> +# Image level user / group settings
> +ROOTFS_POSTPROCESS_COMMAND_append = " set_user_group;"
> +
> +# Image level user / group settings
> +set_user_group () {
> +	user_group_settings="${USER_GROUP_SETTINGS}"
> +	export PSEUDO="${FAKEROOTENV} ${STAGING_DIR_NATIVE}${bindir}/pseudo"
> +	setting=`echo $user_group_settings | cut -d ';' -f1`
> +	remaining=`echo $user_group_settings | cut -d ';' -f2-`
> +	while test "x$setting" != "x"; do
> +		action=`echo $setting | cut -d ',' -f1`
> +		opts=`echo $setting | cut -d ',' -f2`
> +		# Different from useradd.bbclass, there's no file locking issue here, as
> +		# this setting is actually a serial process. So we only retry once.
> +		case $action in
> +			useradd)
> +				perform_useradd "${IMAGE_ROOTFS}" "-R ${IMAGE_ROOTFS} $opts" 1
> +				;;
> +			groupadd)
> +				perform_groupadd "${IMAGE_ROOTFS}" "-R ${IMAGE_ROOTFS} $opts" 1
> +				;;
> +			userdel)
> +				perform_userdel "${IMAGE_ROOTFS}" "-R ${IMAGE_ROOTFS} $opts" 1
> +				;;
> +			groupdel)
> +				perform_groupdel "${IMAGE_ROOTFS}" "-R ${IMAGE_ROOTFS} $opts" 1
> +				;;
> +			usermod)
> +				perform_usermod "${IMAGE_ROOTFS}" "-R ${IMAGE_ROOTFS} $opts" 1
> +				;;
> +			groupmod)
> +				perform_groupmod "${IMAGE_ROOTFS}" "-R ${IMAGE_ROOTFS} $opts" 1
> +				;;
> +			*)
> +				bbfatal "Incorrect setting for USER_GROUP_SETTINGS"

Could you please make it report $action in the error so it's clear which
value is invalid?

> +				;;
> +		esac
> +		# iterate to the next setting
> +		setting=`echo $remaining | cut -d ';' -f1`
> +		remaining=`echo $remaining | cut -d ';' -f2-`
> +	done
> +}

Cheers,
Paul

-- 

Paul Eggleton
Intel Open Source Technology Centre