Since iptables version 1.4.16 '-m state --state NEW' is converted to '-m conntrack --ctstate NEW'. Therefore, when encountering this or later versions of iptables use '-m conntrack --ctstate'. Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com> --- v1->v2: - Fixed a logic bug and adjusted version comparison to use '>=' rather than '>' --- src/nwfilter/nwfilter_ebiptables_driver.c | 50 +++++++++++++++++++++++++++++- 1 file changed, 49 insertions(+), 1 deletion(-) Index: libvirt-acl/src/nwfilter/nwfilter_ebiptables_driver.c =================================================================== --- libvirt-acl.orig/src/nwfilter/nwfilter_ebiptables_driver.c +++ libvirt-acl/src/nwfilter/nwfilter_ebiptables_driver.c @@ -188,6 +188,9 @@ static const char ebiptables_script_set_ static const char *m_state_out_str = "-m state --state NEW,ESTABLISHED"; static const char *m_state_in_str = "-m state --state ESTABLISHED"; +static const char *m_state_out_str_new = "-m conntrack --ctstate NEW,ESTABLISHED"; +static const char *m_state_in_str_new = "-m conntrack --ctstate ESTABLISHED"; + static const char *m_physdev_in_str = "-m physdev " PHYSDEV_IN; static const char *m_physdev_out_str = "-m physdev " PHYSDEV_OUT; static const char *m_physdev_out_old_str = "-m physdev " PHYSDEV_OUT_OLD; @@ -4353,6 +4356,49 @@ ebiptablesDriverProbeCtdir(void) iptables_ctdir_corrected = CTDIR_STATUS_OLD; } +static void +ebiptablesDriverProbeStateMatch(void) +{ + virBuffer buf = VIR_BUFFER_INITIALIZER; + char *cmdout = NULL, *version; + unsigned long thisversion; + + NWFILTER_SET_IPTABLES_SHELLVAR(&buf); + + virBufferAsprintf(&buf, + "$IPT --version"); + + if (ebiptablesExecCLI(&buf, NULL, &cmdout) < 0) { + VIR_ERROR(_("Testing of iptables command failed: %s"), + cmdout); + return; + } + + /* + * we expect output in the format + * iptables v1.4.16 + */ + if (!(version = strchr(cmdout, 'v')) || + virParseVersionString(version + 1, &thisversion, true) < 0) { + VIR_ERROR(_("Could not determine iptables version from string %s"), + cmdout); + goto cleanup; + } + + /* + * since version 1.4.16 '-m state --state ...' will be converted to + * '-m conntrack --ctstate ...' + */ + if (thisversion >= 1 * 1000000 + 4 * 1000 + 16) { + m_state_out_str = m_state_out_str_new; + m_state_in_str = m_state_in_str_new; + } + +cleanup: + VIR_FREE(cmdout); + return; +} + static int ebiptablesDriverInit(bool privileged) { @@ -4390,8 +4436,10 @@ ebiptablesDriverInit(bool privileged) return -ENOTSUP; } - if (iptables_cmd_path) + if (iptables_cmd_path) { ebiptablesDriverProbeCtdir(); + ebiptablesDriverProbeStateMatch(); + } ebiptables_driver.flags = TECHDRV_FLAG_INITIALIZED;