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Add support for --wait options to restore commands 

Without this, either one of iptables and ip6tables services is likely to
fail at system startup because the other one is holding the xtables
lock.
This commit is contained in:
Phil Sutter 2018-02-28 08:51:23 +01:00
parent 82de804ec0
commit 6714065736
2 changed files with 26 additions and 0 deletions
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12
iptables-config
View File

@ -45,3 +45,15 @@ IPTABLES_STATUS_LINENUMBERS="yes"
# Space separated list of sysctl items which are to be reloaded on start.
# List items will be matched by fgrep.
#IPTABLES_SYSCTL_LOAD_LIST=".nf_conntrack .bridge-nf"
# Set wait option for iptables-restore calls in seconds
# Default: 600
# Set to 0 to deactivate the wait.
#IPTABLES_RESTORE_WAIT=600
# Set wait interval option for iptables-restore calls in microseconds
# Default: 1000000
# Set to 100000 to try to get the lock every 100000 microseconds, 10 times a
# second.
# Only usable with IPTABLES_RESTORE_WAIT > 0
#IPTABLES_RESTORE_WAIT_INTERVAL=1000000

14
iptables.init
View File

@ -55,6 +55,8 @@ IPTABLES_STATUS_NUMERIC="yes"
IPTABLES_STATUS_VERBOSE="no"
IPTABLES_STATUS_LINENUMBERS="yes"
IPTABLES_SYSCTL_LOAD_LIST=""
IPTABLES_RESTORE_WAIT=600
IPTABLES_RESTORE_WAIT_INTERVAL=1000000
# Load firewall configuration.
[ -f "$IPTABLES_CONFIG" ] && . "$IPTABLES_CONFIG"
@ -177,6 +179,12 @@ start() {
OPT=
[ "x$IPTABLES_SAVE_COUNTER" = "xyes" ] && OPT="-c"
if [ $IPTABLES_RESTORE_WAIT -ne 0 ]; then
OPT="${OPT} --wait ${IPTABLES_RESTORE_WAIT}"
if [ $IPTABLES_RESTORE_WAIT_INTERVAL -lt 1000000 ]; then
OPT="${OPT} --wait-interval ${IPTABLES_RESTORE_WAIT_INTERVAL}"
fi
fi
$IPTABLES-restore $OPT $IPTABLES_DATA
if [ $? -eq 0 ]; then
@ -328,6 +336,12 @@ reload() {
OPT=
[ "x$IPTABLES_SAVE_COUNTER" = "xyes" ] && OPT="-c"
if [ $IPTABLES_RESTORE_WAIT -ne 0 ]; then
OPT="${OPT} --wait ${IPTABLES_RESTORE_WAIT}"
if [ $IPTABLES_RESTORE_WAIT_INTERVAL -lt 1000000 ]; then
OPT="${OPT} --wait-interval ${IPTABLES_RESTORE_WAIT_INTERVAL}"
fi
fi
$IPTABLES-restore $OPT $IPTABLES_DATA
if [ $? -eq 0 ]; then