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Support SAFESTOP under systemd

Browse Source 
By default, in Debian and its derivatives, stopping the Shorewall
service executes `/sbin/shorewall clear`.

The `SAFESTOP` setting in /etc/default/shorewall is intended to stop the
service by calling `/sbin/shorewall stop`.

However, the systemd service files do not support this.  Instead,
install a shell-script that sources /etc/default/shorewall and honours
`SAFESTOP` when stopping Shorewall and patch the service files to call
it.

Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
This commit is contained in:
Jeremy Sowden 2023-01-31 21:52:42 +00:00
parent aae5baedfd
commit badf2fc9f0
8 changed files with 44 additions and 11 deletions
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9
Shorewall-core/install.sh
View File

@ -324,6 +324,15 @@ install_file wait4ifup ${DESTDIR}${LIBEXECDIR}/shorewall/wait4ifup 0755
echo
echo "wait4ifup installed in ${DESTDIR}${LIBEXECDIR}/shorewall/wait4ifup"
#
# Install stop_service
#
if [ -n "${STOPSERVICEFILE}" ]; then
install_file ${STOPSERVICEFILE} ${DESTDIR}${LIBEXECDIR}/shorewall/stop_service 0755
echo
echo "${STOPSERVICEFILE} installed in ${DESTDIR}${LIBEXECDIR}/shorewall/stop_service"
fi
#
# Install the libraries

1
Shorewall-core/shorewallrc.debian.systemd
View File

@ -22,3 +22,4 @@ SPARSE=Yes #If non-empty, only install $PRODUCT/$PRODUCT.conf in $CONFDIR
VARLIB=/var/lib #Directory where product variable data is stored.
VARDIR=${VARLIB}/$PRODUCT #Directory where product variable data is stored.
DEFAULT_PAGER=/usr/bin/less #Pager to use if none specified in shorewall[6].conf
STOPSERVICEFILE=stop_service.debian #Name of script to stop systemd service that honours `SAFESTOP`.

19
Shorewall-core/stop_service.debian Normal file
View File

@ -0,0 +1,19 @@
#!/bin/sh
PRODUCT=$1
. /etc/default/${PRODUCT}
if [ "$SAFESTOP" = 1 ]; then
COMMAND=stop
else
COMMAND=clear
fi
if [ "${PRODUCT}" = shorewall6 ]; then
EXEC="/sbin/shorewall -6"
else
EXEC="/sbin/${PRODUCT}"
fi
exec ${EXEC} ${OPTIONS} ${COMMAND}

2
Shorewall-lite/shorewall-lite.service.debian
View File

@ -17,7 +17,7 @@ RemainAfterExit=yes
EnvironmentFile=-/etc/default/shorewall-lite
StandardOutput=syslog
ExecStart=/sbin/shorewall-lite $OPTIONS start $STARTOPTIONS
ExecStop=/sbin/shorewall-lite $OPTIONS clear
ExecStop=/usr/share/shorewall/stop_service shorewall-lite
ExecReload=/sbin/shorewall-lite $OPTIONS reload $RELOADOPTIONS
[Install]

2
Shorewall/shorewall.service.debian
View File

@ -17,7 +17,7 @@ RemainAfterExit=yes
EnvironmentFile=-/etc/default/shorewall
StandardOutput=syslog
ExecStart=/sbin/shorewall $OPTIONS start $STARTOPTIONS
ExecStop=/sbin/shorewall $OPTIONS clear
ExecStop=/usr/share/shorewall/stop_service shorewall
ExecReload=/sbin/shorewall $OPTIONS reload $RELOADOPTIONS
[Install]

2
Shorewall6-lite/shorewall6-lite.service.debian
View File

@ -17,7 +17,7 @@ RemainAfterExit=yes
EnvironmentFile=-/etc/default/shorewall6-lite
StandardOutput=syslog
ExecStart=/sbin/shorewall6-lite $OPTIONS start
ExecStop=/sbin/shorewall6-lite $OPTIONS clear
ExecStop=/usr/share/shorewall/stop_service shorewall6-lite
ExecReload=/sbin/shorewall6-lite $OPTIONS reload
[Install]

2
Shorewall6/shorewall6.service.debian
View File

@ -18,7 +18,7 @@ RemainAfterExit=yes
EnvironmentFile=-/etc/default/shorewall6
StandardOutput=syslog
ExecStart=/sbin/shorewall -6 $OPTIONS start $STARTOPTIONS
ExecStop=/sbin/shorewall -6 $OPTIONS clear
ExecStop=/usr/share/shorewall/stop_service shorewall6
ExecReload=/sbin/shorewall -6 $OPTIONS reload $RELOADOPTIONS
[Install]

18
docs/starting_and_stopping_shorewall.xml
View File

@ -206,12 +206,12 @@
<section>
<title>systemd</title>
<para>As with SysV init described in the preceeding section, the behavior
of systemctl commands differ from the Shorewall CLI commands on
Debian-based systems. To make systemctl stop shorewall[-lite] and
systemctl restart shorewall[-lite] behave like shorewall stop and
shorewall restart, use this workaround provided by J Cliff
Armstrong:</para>
<para>As with SysV init described in the preceeding section, the behavior of
systemctl commands differ from the Shorewall CLI commands on Debian-based
systems. In versions of Shorewall before 5.2.9, to make <command>systemctl
stop shorewall</command> and <command>systemctl restart shorewall</command>
behave like <command>shorewall stop</command> and <command>shorewall
restart</command>, use this workaround provided by J Cliff Armstrong:</para>
<para> Type (as root):</para>
@ -231,10 +231,14 @@ ExecStop=/sbin/shorewall $OPTIONS stop</programlisting>
<para>to activate the changes. This change will survive future updates of
the shorewall package from apt repositories. The override file itself will
be saved to `/etc/systemd/system/shorewall.service.d/`.</para>
be saved to <filename>/etc/systemd/system/shorewall.service.d/</filename>.</para>
<para>The same workaround may be applied to the other Shorewall products
(excluding Shorewall Init).</para>
<para>From Shorewall 5.2.9 onwards, the systemd service files have been
updated to execute a shell script that obeys the SAFESTOP setting to stop
the firewall, and the workaround is no longer necessary.</para>
</section>
<section id="Trace">