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| author | Jo-Philipp Wich <jow@openwrt.org> | 2010-09-19 15:01:47 +0000 |
|---|---|---|
| committer | Jo-Philipp Wich <jow@openwrt.org> | 2010-09-19 15:01:47 +0000 |
| commit | b07620df310e20f2031eb95f4185884eae826d0d (patch) | |
| tree | 46abd6b296ca227a378390d772a881b808f5792c /package/firewall/files | |
| parent | a5d0879de78fb3568344c4ea190cb70e3233587e (diff) | |
| download | mtk-20170518-b07620df310e20f2031eb95f4185884eae826d0d.zip mtk-20170518-b07620df310e20f2031eb95f4185884eae826d0d.tar.gz mtk-20170518-b07620df310e20f2031eb95f4185884eae826d0d.tar.bz2 | |
firewall: protect iptables invocations with locks in interface ops, it might run concurrently due to hotplug invocations on network restart
SVN-Revision: 23090
Diffstat (limited to 'package/firewall/files')
| -rw-r--r-- | package/firewall/files/lib/core_interface.sh | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/package/firewall/files/lib/core_interface.sh b/package/firewall/files/lib/core_interface.sh index 1a33cde..f089759 100644 --- a/package/firewall/files/lib/core_interface.sh +++ b/package/firewall/files/lib/core_interface.sh @@ -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 |