[Buildroot] [PATCH v2] package/iptables: add init script

[Baruch Siach]

Hi José,

On Wed, Sep 15 2021, José Pekkarinen wrote:
> On Tue, Sep 14, 2021 at 7:22 PM Baruch Siach <baruch at tkos.co.il> wrote:
>  On Tue, Sep 14 2021, José Pekkarinen wrote:
>  > This patch will add an init script that allows
>  > to set a ruleset in /etc/iptables.conf to be loaded
>  > on boot, or flushed on stop, as well as a saving
>  > command to generate a new file.
>  >
>  > Signed-off-by: José Pekkarinen <jose.pekkarinen at unikie.com>
>  > ---
>  > [v1 -> v2] s/touch $(DESTDIR)/touch $(TARGET_DIR)/
>  >
>  >  package/iptables/S41iptables | 58 ++++++++++++++++++++++++++++++++++++
>  >  package/iptables/iptables.mk |  6 ++++
>  >  2 files changed, 64 insertions(+)
>  >  create mode 100644 package/iptables/S41iptables
>  >
>  > diff --git a/package/iptables/S41iptables b/package/iptables/S41iptables
>  > new file mode 100644
>  > index 0000000000..93998b78de
>  > --- /dev/null
>  > +++ b/package/iptables/S41iptables
>  > @@ -0,0 +1,58 @@
>  > +#!/bin/sh
>  > +
>  > +DAEMON="iptables"
>  > +
>  > +IPTABLES_ARGS=""
>  > +
>  > +start() {
>  > +     printf 'Starting %s: ' "$DAEMON"
>  > +     iptables-restore < /etc/iptables.conf
>  > +     status=$?
>  > +     if [ "$status" -eq 0 ]; then
>  > +             echo "OK"
>  > +     else
>  > +             echo "FAIL"
>  > +     fi
>  > +     return "$status"
>  > +}
>  > +
>  > +stop() {
>  > +     printf 'Stopping %s: ' "$DAEMON"
>  > +     iptables -F
>  > +     status=$?
>  > +     if [ "$status" -eq 0 ]; then
>  > +             echo "OK"
>  > +     else
>  > +             echo "FAIL"
>  > +     fi
>  > +     return "$status"
>  > +}
>  > +
>  > +restart() {
>  > +     stop
>  > +     sleep 1
>  > +     start
>  > +}
>  > +
>  > +save() {
>  > +     printf 'Saving %s: ' "$DAEMON"
>  > +     iptables-save > /etc/iptables.conf
>
>  What about read-only rootfs?
>
>     Very good point, will it work if we check the rootfs
> whether is ro or rw, and execute on that behalf?

I'm not sure that this script is a good idea to begin with for the
default installation. But if the maintainers think it is, the script
should skip the save operation for read-only filesystems. See how
package/urandom-scripts/S20urandom handles that.

baruch

>
>     Thanks for the comments!
>
>     José.
>  
>  baruch
>
>  > +     status=$?
>  > +     if [ "$status" -eq 0 ]; then
>  > +             echo "OK"
>  > +     else
>  > +             echo "FAIL"
>  > +     fi
>  > +     return "$status"
>  > +}
>  > +
>  > +case "$1" in
>  > +     start|stop|restart|save)
>  > +             "$1";;
>  > +     reload)
>  > +             # Restart, since there is no true "reload" feature.
>  > +             restart;;
>  > +     *)
>  > +             echo "Usage: $0 {start|stop|restart|reload}"
>  > +             exit 1
>  > +esac
>  > diff --git a/package/iptables/iptables.mk b/package/iptables/iptables.mk
>  > index dc01466607..1d3612dbf6 100644
>  > --- a/package/iptables/iptables.mk
>  > +++ b/package/iptables/iptables.mk
>  > @@ -57,4 +57,10 @@ define IPTABLES_LINUX_CONFIG_FIXUPS
>  >       $(call KCONFIG_ENABLE_OPT,CONFIG_NETFILTER_XTABLES)
>  >  endef
>  >  
>  > +define IPTABLES_INSTALL_INIT_SYSV
>  > +     $(INSTALL) -m 0755 -D package/iptables/S41iptables \
>  > +             $(TARGET_DIR)/etc/init.d/S41iptables
>  > +     touch $(TARGET_DIR)/etc/iptables.conf
>  > +endef
>  > +
>  >  $(eval $(autotools-package))

-- 
                                                     ~. .~   Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
   - baruch at tkos.co.il - tel: +972.52.368.4656, http://www.tkos.co.il -