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libvirt/tests/networkxml2conftest.c
Laine Stump 9065cfaa88 network: allow disabling dnsmasq's DNS server
If you define a libvirt virtual network with one or more IP addresses,
it starts up an instance of dnsmasq. It's always been possible to
avoid dnsmasq's dhcp server (simply don't include a <dhcp> element),
but until now it wasn't possible to avoid having the DNS server
listening; even if the network has no <dns> element, it is started
using default settings.

This patch adds a new attribute to <dns>: enable='yes|no'. For
backward compatibility, it defaults to 'yes', but if you don't want a
DNS server created for the network, you can simply add:

   <dns enable='no'/>

to the network configuration, and next time the network is started
there will be no dns server created (if there is dhcp configuration,
dnsmasq will be started with "port=0" which disables the DNS server;
if there is no dhcp configuration, dnsmasq won't be started at all).
2016-08-19 21:10:34 -04:00

141 lines
3.9 KiB
C

#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <fcntl.h>
#include "internal.h"
#include "testutils.h"
#include "network_conf.h"
#include "vircommand.h"
#include "viralloc.h"
#include "network/bridge_driver.h"
#include "virstring.h"
#define VIR_FROM_THIS VIR_FROM_NONE
static int
testCompareXMLToConfFiles(const char *inxml, const char *outconf, dnsmasqCapsPtr caps)
{
char *actual = NULL;
int ret = -1;
virNetworkDefPtr dev = NULL;
virNetworkObjPtr obj = NULL;
virCommandPtr cmd = NULL;
char *pidfile = NULL;
dnsmasqContext *dctx = NULL;
if (!(dev = virNetworkDefParseFile(inxml)))
goto fail;
if (!(obj = virNetworkObjNew()))
goto fail;
obj->def = dev;
dctx = dnsmasqContextNew(dev->name, "/var/lib/libvirt/dnsmasq");
if (dctx == NULL)
goto fail;
if (networkDnsmasqConfContents(obj, pidfile, &actual,
dctx, caps) < 0)
goto fail;
if (virTestCompareToFile(actual, outconf) < 0)
goto fail;
ret = 0;
fail:
VIR_FREE(actual);
VIR_FREE(pidfile);
virCommandFree(cmd);
virObjectUnref(obj);
dnsmasqContextFree(dctx);
return ret;
}
typedef struct {
const char *name;
dnsmasqCapsPtr caps;
} testInfo;
static int
testCompareXMLToConfHelper(const void *data)
{
int result = -1;
const testInfo *info = data;
char *inxml = NULL;
char *outxml = NULL;
if (virAsprintf(&inxml, "%s/networkxml2confdata/%s.xml",
abs_srcdir, info->name) < 0 ||
virAsprintf(&outxml, "%s/networkxml2confdata/%s.conf",
abs_srcdir, info->name) < 0) {
goto cleanup;
}
result = testCompareXMLToConfFiles(inxml, outxml, info->caps);
cleanup:
VIR_FREE(inxml);
VIR_FREE(outxml);
return result;
}
static int
mymain(void)
{
int ret = 0;
dnsmasqCapsPtr restricted
= dnsmasqCapsNewFromBuffer("Dnsmasq version 2.48", DNSMASQ);
dnsmasqCapsPtr full
= dnsmasqCapsNewFromBuffer("Dnsmasq version 2.63\n--bind-dynamic", DNSMASQ);
dnsmasqCapsPtr dhcpv6
= dnsmasqCapsNewFromBuffer("Dnsmasq version 2.64\n--bind-dynamic", DNSMASQ);
#define DO_TEST(xname, xcaps) \
do { \
static testInfo info; \
\
info.name = xname; \
info.caps = xcaps; \
if (virTestRun("Network XML-2-Conf " xname, \
testCompareXMLToConfHelper, &info) < 0) { \
ret = -1; \
} \
} while (0)
DO_TEST("isolated-network", restricted);
DO_TEST("netboot-network", restricted);
DO_TEST("netboot-proxy-network", restricted);
DO_TEST("nat-network-dns-srv-record-minimal", restricted);
DO_TEST("nat-network-name-with-quotes", restricted);
DO_TEST("routed-network", full);
DO_TEST("routed-network-no-dns", full);
DO_TEST("open-network", full);
DO_TEST("nat-network", dhcpv6);
DO_TEST("nat-network-dns-txt-record", full);
DO_TEST("nat-network-dns-srv-record", full);
DO_TEST("nat-network-dns-hosts", full);
DO_TEST("nat-network-dns-forward-plain", full);
DO_TEST("nat-network-dns-forwarders", full);
DO_TEST("nat-network-dns-local-domain", full);
DO_TEST("dhcp6-network", dhcpv6);
DO_TEST("dhcp6-nat-network", dhcpv6);
DO_TEST("dhcp6host-routed-network", dhcpv6);
virObjectUnref(dhcpv6);
virObjectUnref(full);
virObjectUnref(restricted);
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
VIRT_TEST_MAIN(mymain)