[yocto] [PATCH] update-rc.d: support enable/disable function

[Changqing Li]

Ping

On 11/9/18 5:44 PM, changqing.li at windriver.com wrote:
> From: Changqing Li <changqing.li at windriver.com>
>
> Add support of enable/disable function, so that user can keep
> previous config after upgrade package
>
> Signed-off-by: Changqing Li <changqing.li at windriver.com>
> ---
>   update-rc.d | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>   1 file changed, 70 insertions(+)
>
> diff --git a/update-rc.d b/update-rc.d
> index e07cf85..1ba97d3 100644
> --- a/update-rc.d
> +++ b/update-rc.d
> @@ -27,6 +27,7 @@ usage()
>   usage: update-rc.d [-n] [-f] [-r <root>] <basename> remove
>          update-rc.d [-n] [-r <root>] [-s] <basename> defaults [NN | sNN kNN]
>          update-rc.d [-n] [-r <root>] [-s] <basename> start|stop NN runlvl [runlvl] [...] .
> +       update-rc.d [-n] [-r <root>] [-s] <basename> enable|disable [S|2|3|4|5]
>   		-n: not really
>   		-f: force
>   		-v: verbose
> @@ -101,6 +102,43 @@ makelinks()
>   	done
>   }
>   
> +renamelink()
> +{
> +	local oldstartstop newstartstop lev oldnn newnn
> +	if [ "x$1" = "xS" ]; then
> +		oldstartstop="K"
> +		newstartstop="S"
> +	else
> +		oldstartstop="S"
> +		newstartstop="K"
> +	fi
> +
> +	lev=$2
> +	if ls ${etcd}${lev}.d/${oldstartstop}*${bn} >/dev/null 2>&1; then
> +		oldnn=`basename ${etcd}${lev}.d/${oldstartstop}*${bn}|cut -c2-3`
> +		newnn=$[100-$oldnn]
> +		[ $verbose -eq 1 ] && echo "rename ${etcd}${lev}.d/${oldstartstop}${oldnn}${bn} -> ${etcd}${lev}.d/${newstartstop}${newnn}${bn}"
> +		if [ $notreally -eq 0 ];then
> +			mv ${etcd}${lev}.d/${oldstartstop}${oldnn}${bn} ${etcd}${lev}.d/${newstartstop}${newnn}${bn}
> +		fi
> +		if [ $dostart -eq 1 ] && [ $newstartstop = "S" ] && [ $lev = $RUNLEVEL ]; then
> +			$fn start || true
> +		fi
> +	fi
> +
> +}
> +
> +renamelinks()
> +{
> +	if [ $# -eq 2 ]; then
> +		renamelink $1 $2
> +	else
> +		for i in 2 3 4 5 S; do
> +			renamelink $1 $i
> +		done
> +	fi
> +}
> +
>   while [ $# -gt 0 ]; do
>   	case $1 in
>   		-n)	notreally=1
> @@ -221,6 +259,13 @@ case $1 in
>   		;;
>   
>   	start | stop)
> +		if [ $# -lt 4 ]
> +		then
> +			echo "Not enough arguments"
> +			usage
> +			exit 1
> +		fi
> +
>   		while [ $# -gt 0 ]; do
>   			if [ $1 = "start" ]; then
>   				letter=S
> @@ -251,6 +296,31 @@ case $1 in
>   		makelinks
>   		;;
>   
> +	enable | disable)
> +		if [ $1 = "enable" ]; then
> +			letter=S
> +		elif [ $1 = "disable" ]; then
> +			letter=K
> +		else
> +			usage
> +			exit 1
> +		fi
> +		shift
> +		if [ $# -gt 0 ]
> +		then
> +			case $1 in
> +				S|2|3|4|5)
> +					renamelinks $letter $1
> +					;;
> +				*)
> +					usage
> +					exit 1
> +					;;
> +			esac
> +		else
> +			renamelinks $letter
> +		fi
> +		;;
>   	*)
>   		usage
>   		exit 1

-- 
BRs

Sandy(Li Changqing)