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https://gitlab.com/libvirt/libvirt.git
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298fa4858c
This adds a new "localOnly" attribute on the domain element of the
network xml. With this set to "yes", DNS requests under that domain
will only be resolved by libvirt's dnsmasq, never forwarded upstream.
This was how it worked before commit f69a6b987d, and I found that
functionality useful. For example, I have my host's NetworkManager
dnsmasq configured to forward that domain to libvirt's dnsmasq, so I can
easily resolve guest names from outside. But if libvirt's dnsmasq
doesn't know a name and forwards it to the host, I'd get an endless
forwarding loop. Now I can set localOnly="yes" to prevent the loop.
Signed-off-by: Josh Stone <jistone@redhat.com>
146 lines
4.0 KiB
C
146 lines
4.0 KiB
C
#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include "internal.h"
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#include "testutils.h"
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#include "network_conf.h"
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#include "vircommand.h"
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#include "viralloc.h"
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#include "network/bridge_driver.h"
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#include "virstring.h"
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#define VIR_FROM_THIS VIR_FROM_NONE
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static int
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testCompareXMLToConfFiles(const char *inxml, const char *outconf, dnsmasqCapsPtr caps)
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{
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char *inXmlData = NULL;
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char *outConfData = NULL;
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char *actual = NULL;
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int ret = -1;
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virNetworkDefPtr dev = NULL;
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virNetworkObjPtr obj = NULL;
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virCommandPtr cmd = NULL;
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char *pidfile = NULL;
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dnsmasqContext *dctx = NULL;
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if (virtTestLoadFile(inxml, &inXmlData) < 0)
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goto fail;
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if (virtTestLoadFile(outconf, &outConfData) < 0)
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goto fail;
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if (!(dev = virNetworkDefParseString(inXmlData)))
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goto fail;
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if (VIR_ALLOC(obj) < 0)
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goto fail;
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obj->def = dev;
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dctx = dnsmasqContextNew(dev->name, "/var/lib/libvirt/dnsmasq");
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if (dctx == NULL)
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goto fail;
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if (networkDnsmasqConfContents(obj, pidfile, &actual,
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dctx, caps) < 0)
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goto fail;
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if (STRNEQ(outConfData, actual)) {
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virtTestDifference(stderr, outConfData, actual);
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goto fail;
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}
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ret = 0;
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fail:
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VIR_FREE(inXmlData);
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VIR_FREE(outConfData);
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VIR_FREE(actual);
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VIR_FREE(pidfile);
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virCommandFree(cmd);
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virNetworkObjFree(obj);
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dnsmasqContextFree(dctx);
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return ret;
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}
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typedef struct {
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const char *name;
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dnsmasqCapsPtr caps;
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} testInfo;
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static int
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testCompareXMLToConfHelper(const void *data)
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{
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int result = -1;
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const testInfo *info = data;
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char *inxml = NULL;
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char *outxml = NULL;
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if (virAsprintf(&inxml, "%s/networkxml2confdata/%s.xml",
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abs_srcdir, info->name) < 0 ||
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virAsprintf(&outxml, "%s/networkxml2confdata/%s.conf",
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abs_srcdir, info->name) < 0) {
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goto cleanup;
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}
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result = testCompareXMLToConfFiles(inxml, outxml, info->caps);
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cleanup:
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VIR_FREE(inxml);
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VIR_FREE(outxml);
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return result;
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}
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static int
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mymain(void)
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{
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int ret = 0;
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dnsmasqCapsPtr restricted
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= dnsmasqCapsNewFromBuffer("Dnsmasq version 2.48", DNSMASQ);
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dnsmasqCapsPtr full
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= dnsmasqCapsNewFromBuffer("Dnsmasq version 2.63\n--bind-dynamic", DNSMASQ);
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dnsmasqCapsPtr dhcpv6
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= dnsmasqCapsNewFromBuffer("Dnsmasq version 2.64\n--bind-dynamic", DNSMASQ);
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#define DO_TEST(xname, xcaps) \
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do { \
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static testInfo info; \
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\
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info.name = xname; \
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info.caps = xcaps; \
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if (virtTestRun("Network XML-2-Conf " xname, \
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testCompareXMLToConfHelper, &info) < 0) { \
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ret = -1; \
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} \
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} while (0)
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DO_TEST("isolated-network", restricted);
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DO_TEST("netboot-network", restricted);
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DO_TEST("netboot-proxy-network", restricted);
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DO_TEST("nat-network-dns-srv-record-minimal", restricted);
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DO_TEST("routed-network", full);
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DO_TEST("nat-network", dhcpv6);
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DO_TEST("nat-network-dns-txt-record", full);
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DO_TEST("nat-network-dns-srv-record", full);
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DO_TEST("nat-network-dns-hosts", full);
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DO_TEST("nat-network-dns-forward-plain", full);
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DO_TEST("nat-network-dns-forwarders", full);
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DO_TEST("nat-network-dns-local-domain", full);
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DO_TEST("dhcp6-network", dhcpv6);
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DO_TEST("dhcp6-nat-network", dhcpv6);
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DO_TEST("dhcp6host-routed-network", dhcpv6);
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return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
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}
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VIRT_TEST_MAIN(mymain)
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