[Buildroot] [PATCH 1/1] ntp: added S48ntpdate script

[Matthew Weber <matthew.weber@rockwellcollins.com>]

Oscar,


On Fri, Oct 19, 2018 at 4:52 PM Oscar Gomez Fuente
<oscargomezf@gmail.com> wrote:
>
> Signed-off-by: Oscar Gomez Fuente <oscargomezf@gmail.com>
> ---
>  package/ntp/S48ntpdate | 30 ++++++++++++++++++++++++++++++
>  package/ntp/S49ntp     | 42 +++++++++++++++++++++---------------------
>  package/ntp/ntp.mk     |  7 +++++++
>  3 files changed, 58 insertions(+), 21 deletions(-)
>  create mode 100755 package/ntp/S48ntpdate
>
> diff --git a/package/ntp/S48ntpdate b/package/ntp/S48ntpdate
> new file mode 100755
> index 0000000..a8d4d70
> --- /dev/null
> +++ b/package/ntp/S48ntpdate
> @@ -0,0 +1,30 @@
> +#! /bin/sh
> +
> +NAME=ntpdate
> +NTP_SERVERS="0.pool.ntp.org 1.pool.ntp.org 2.pool.ntp.org 3.pool.ntp.org"
> +
> +start() {
> +       printf "Starting $NAME: "
> +       for ntpserver in $NTP_SERVERS
> +       do
> +               CURRENT_UNIX_TIME="$(date +%s)"
> +               if [ $CURRENT_UNIX_TIME -lt 1000000000 ]; then
> +                       /usr/bin/ntpdate $ntpserver > /dev/null 2>&1
> +               else
> +                       break
> +               fi
> +       done
> +       [ $? = 0 ] && echo "OK" || echo "FAIL"
> +}
> +
> +case $1 in
> +       start)
> +               start
> +               ;;
> +       *)
> +               echo "Usage: $0 {start}" >&2
> +               exit 1
> +               ;;
> +esac
> +
> +exit 0
> diff --git a/package/ntp/S49ntp b/package/ntp/S49ntp
> index 35e5874..0e90f29 100755
> --- a/package/ntp/S49ntp
> +++ b/package/ntp/S49ntp
> @@ -5,30 +5,30 @@ NAME=ntpd
>  # Read config file if it is present.
>  if [ -r /etc/default/$NAME ]
>  then
> -  . /etc/default/$NAME
> +       . /etc/default/$NAME
>  fi
>
>  case "$1" in
> -  start)
> -    printf "Starting $NAME: "
> -    start-stop-daemon -S -q -x /usr/sbin/ntpd -- -g
> -    [ $? = 0 ] && echo "OK" || echo "FAIL"
> -    ;;
> -  stop)
> -    printf "Stopping $NAME: "
> -    start-stop-daemon -K -q -n $NAME
> -    [ $? = 0 ] && echo "OK" || echo "FAIL"
> -    ;;
> -  restart|reload)
> -    echo "Restarting $NAME: "
> -    $0 stop
> -    sleep 1
> -    $0 start
> -    ;;
> -  *)
> -    echo "Usage: $0 {start|stop|restart|reload}" >&2
> -    exit 1
> -    ;;
> +       start)
> +               printf "Starting $NAME: "

I went back through the discussion so far and wanted to bring back up
"ntpd -q ".   I think it would simplify and future proof what you're
wanting to accomplish.
 - ntpdate is deprecated and will eventually not be part of the ntp
package so we shouldn't add a seperate startup script.  Other examples
have kept it self contained in ntpd's.
 - ntpd -q uses the ntpd configs and there isn't any custom script
logic or layer of new configs.  I'd suggest testing but the 1970's
check may not need to occur.  ntpd -q may handle that sort of a
check/fall-through.

Something like the following.

     CURRENT_DATE=$(date | grep "1970")
     if [ "$CURRENT_DATE" != "" ]; then
            # ntpd -q (equivalent to ntpdate) and expanded slew -x
           /usr/sbin/ntpd -q -x > /dev/null 2>&1                # I
don't believe it outputs anything so the redirects could be dropped
when tested
            [ $?  != 0 ] && echo -n "(No initial time set)"
     fi

> +               start-stop-daemon -S -q -x /usr/sbin/ntpd -- -g
> +               [ $? = 0 ] && echo "OK" || echo "FAIL"
> +               ;;
> +       stop)
> +               printf "Stopping $NAME: "
> +               start-stop-daemon -K -q -n $NAME
> +               [ $? = 0 ] && echo "OK" || echo "FAIL"
> +               ;;
> +       restart|reload)
> +               echo "Restarting $NAME: "
> +               $0 stop
> +               sleep 1
> +               $0 start
> +               ;;
> +       *)
> +               echo "Usage: $0 {start|stop|restart|reload}" >&2
> +               exit 1
> +               ;;
>  esac
>
>  exit 0
> diff --git a/package/ntp/ntp.mk b/package/ntp/ntp.mk
> index af3c1aa..c2c910d 100644
> --- a/package/ntp/ntp.mk
> +++ b/package/ntp/ntp.mk
> @@ -93,9 +93,16 @@ define NTP_INSTALL_TARGET_CMDS
>         $(INSTALL) -m 644 package/ntp/ntpd.etc.conf $(TARGET_DIR)/etc/ntp.conf
>  endef
>
> +ifeq ($(BR2_PACKAGE_NTP_NTPDATE),y)
> +define NTP_INSTALL_INIT_SYSV_NTPDATE
> +       $(INSTALL) -D -m 755 package/ntp/S48ntpdate $(TARGET_DIR)/etc/init.d/S48ntpdate
> +endef
> +endif
> +
>  ifeq ($(BR2_PACKAGE_NTP_NTPD),y)
>  define NTP_INSTALL_INIT_SYSV
>         $(INSTALL) -D -m 755 package/ntp/S49ntp $(TARGET_DIR)/etc/init.d/S49ntp
> +       $(NTP_INSTALL_INIT_SYSV_NTPDATE)
>  endef
>
>  define NTP_INSTALL_INIT_SYSTEMD
> --
> 1.9.1
>


--
Matthew L Weber / Pr Software Engineer
Airborne Information Systems / RC Linux Secure Platforms
MS 131-100, C Ave NE, Cedar Rapids, IA, 52498, USA
www.rockwellcollins.com

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