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https://gitlab.com/libvirt/libvirt.git
synced 2024-07-07 18:35:46 +00:00
9065cfaa88
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).
141 lines
3.9 KiB
C
141 lines
3.9 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 *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 (!(dev = virNetworkDefParseFile(inxml)))
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goto fail;
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if (!(obj = virNetworkObjNew()))
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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 (virTestCompareToFile(actual, outconf) < 0)
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goto fail;
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ret = 0;
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fail:
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VIR_FREE(actual);
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VIR_FREE(pidfile);
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virCommandFree(cmd);
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virObjectUnref(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 (virTestRun("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("nat-network-name-with-quotes", restricted);
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DO_TEST("routed-network", full);
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DO_TEST("routed-network-no-dns", full);
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DO_TEST("open-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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virObjectUnref(dhcpv6);
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virObjectUnref(full);
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virObjectUnref(restricted);
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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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