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firewall: protect iptables invocations with locks in interface ops, it might run concurrently due to hotplug invocations on network restart

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SVN-Revision: 23090
This commit is contained in:
Jo-Philipp Wich 2010-09-19 15:01:47 +00:00
parent a5d0879de7
commit b07620df31
2 changed files with 5 additions and 1 deletions
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2
package/firewall/Makefile
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@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=firewall
PKG_VERSION:=2
PKG_RELEASE:=16
PKG_RELEASE:=17
include $(INCLUDE_DIR)/package.mk

4
package/firewall/files/lib/core_interface.sh
View File

@ -72,6 +72,8 @@ fw_configure_interface() {
*/*.*) fw_log info "zone $zone does not support IPv4 address family, skipping"; return ;;
esac
lock /var/run/firewall-interface.lock
fw $action $mode f ${chain}_ACCEPT ACCEPT $ { -o "$ifname" $onet }
fw $action $mode f ${chain}_ACCEPT ACCEPT $ { -i "$ifname" $inet }
fw $action $mode f ${chain}_DROP DROP $ { -o "$ifname" $onet }
@ -86,6 +88,8 @@ fw_configure_interface() {
fw $action $mode n PREROUTING ${chain}_prerouting $ { -i "$ifname" $inet }
fw $action $mode r PREROUTING ${chain}_notrack $ { -i "$ifname" $inet }
fw $action $mode n POSTROUTING ${chain}_nat $ { -o "$ifname" $onet }
lock -u /var/run/firewall-interface.lock
}
local old_zones old_ifname old_subnets