[libvirt] [PATCH v2 5/5] Network: Add support for DNS hosts definition to the network XML
Michal Novotny
minovotn at redhat.com
Fri Apr 1 10:45:56 UTC 2011
Make: passed
Make check: passed
Make syntax-check: passed
Hi,
this is the patch to add support for DNS hosts definition in the
network XML description to generate the the hosts file. This patch
uses the addnhosts* APIs implemented to the src/util/dnsmasq.c by
part 2 of this patch series.
Also, tests for the XML to XML definition and command-line
regression tests has been added.
Michal
Signed-off-by: Michal Novotny <minovotn at redhat.com>
---
docs/formatnetwork.html.in | 7 +
docs/schemas/network.rng | 8 ++
src/conf/network_conf.c | 128 ++++++++++++++++++--
src/conf/network_conf.h | 9 ++
src/network/bridge_driver.c | 20 ++-
.../networkxml2argvdata/nat-network-dns-hosts.argv | 1 +
.../networkxml2argvdata/nat-network-dns-hosts.xml | 19 +++
tests/networkxml2argvtest.c | 1 +
tests/networkxml2xmlin/nat-network-dns-hosts.xml | 27 ++++
tests/networkxml2xmlout/nat-network-dns-hosts.xml | 27 ++++
tests/networkxml2xmltest.c | 1 +
11 files changed, 234 insertions(+), 14 deletions(-)
create mode 100644 tests/networkxml2argvdata/nat-network-dns-hosts.argv
create mode 100644 tests/networkxml2argvdata/nat-network-dns-hosts.xml
create mode 100644 tests/networkxml2xmlin/nat-network-dns-hosts.xml
create mode 100644 tests/networkxml2xmlout/nat-network-dns-hosts.xml
diff --git a/docs/formatnetwork.html.in b/docs/formatnetwork.html.in
index 5211ed2..5d18ed9 100644
--- a/docs/formatnetwork.html.in
+++ b/docs/formatnetwork.html.in
@@ -222,6 +222,13 @@
separated by commas.
<span class="since">Since 0.9.1</span>
</dd>
+ <dt><code>host</code></dt>
+ <dd>The <code>host</code> element is the definition of DNS hosts to be passed
+ to the DNS service. The IP address is identified by the <code>ip</code> attribute
+ and the names for the IP addresses are identified in the <code>hostname</code>
+ subelements of the <code>host</code> element.
+ <span class="since">Since 0.9.1</span>
+ </dd>
</dl>
<h2><a name="examples">Example configuration</a></h2>
diff --git a/docs/schemas/network.rng b/docs/schemas/network.rng
index e27dace..05066a5 100644
--- a/docs/schemas/network.rng
+++ b/docs/schemas/network.rng
@@ -146,6 +146,14 @@
<attribute name="value"><text/></attribute>
</element>
</zeroOrMore>
+ <zeroOrMore>
+ <element name="host">
+ <attribute name="ip"><ref name="ipv4-addr"/></attribute>
+ <oneOrMore>
+ <element name="hostname"><text/></element>
+ </oneOrMore>
+ </element>
+ </zeroOrMore>
</element>
</optional>
</element>
diff --git a/src/conf/network_conf.c b/src/conf/network_conf.c
index b7427d0..1f88649 100644
--- a/src/conf/network_conf.c
+++ b/src/conf/network_conf.c
@@ -435,6 +435,53 @@ virNetworkDHCPRangeDefParseXML(const char *networkName,
}
static int
+virNetworkDNSHostsDefParseXML(virNetworkIpDefPtr def,
+ xmlNodePtr node,
+ virSocketAddr ip)
+{
+ xmlNodePtr cur;
+ int result = -1;
+
+ if (def->dns->hosts == NULL) {
+ if (VIR_ALLOC(def->dns->hosts) < 0)
+ goto oom_error;
+ def->dns->nhosts = 0;
+ }
+
+ cur = node->children;
+ while (cur != NULL) {
+ if (cur->type == XML_ELEMENT_NODE &&
+ xmlStrEqual(cur->name, BAD_CAST "hostname")) {
+ if (cur->children != NULL) {
+ char *hostname;
+
+ hostname = strdup((char *)cur->children->content);
+
+ if (VIR_REALLOC_N(def->dns->hosts, def->dns->nhosts + 1) < 0) {
+ VIR_FREE(hostname);
+ result = -1;
+ goto oom_error;
+ }
+
+ def->dns->hosts[def->dns->nhosts].name = strdup(hostname);
+ def->dns->hosts[def->dns->nhosts].ip = ip;
+ def->dns->nhosts++;
+
+ VIR_FREE(hostname);
+ }
+ }
+
+ cur = cur->next;
+ }
+
+ return 0;
+
+oom_error:
+ virReportOOMError();
+ return result;
+}
+
+static int
virNetworkDNSDefParseXML(virNetworkIpDefPtr def,
xmlNodePtr node)
{
@@ -476,6 +523,27 @@ virNetworkDNSDefParseXML(virNetworkIpDefPtr def,
VIR_FREE(name);
VIR_FREE(value);
+ } else if (cur->type == XML_ELEMENT_NODE &&
+ xmlStrEqual(cur->name, BAD_CAST "host")) {
+ char *ip;
+ virSocketAddr inaddr;
+ memset(&inaddr, 0, sizeof(inaddr));
+
+ if (!(ip = virXMLPropString(cur, "ip"))) {
+ cur = cur->next;
+ continue;
+ }
+ if ((ip == NULL) ||
+ (virSocketParseAddr(ip, &inaddr, AF_UNSPEC) < 0)) {
+ virNetworkReportError(VIR_ERR_XML_DETAIL,
+ _("Missing IP address in DNS host definition"));
+ VIR_FREE(ip);
+ goto error;
+ }
+ VIR_FREE(ip);
+ result = virNetworkDNSHostsDefParseXML(def, cur, inaddr);
+ if (result)
+ goto error;
}
cur = cur->next;
@@ -485,6 +553,7 @@ virNetworkDNSDefParseXML(virNetworkIpDefPtr def,
oom_error:
virReportOOMError();
+error:
return result;
}
@@ -888,17 +957,60 @@ virNetworkIpDefFormat(virBufferPtr buf,
virBufferAddLit(buf, " </dhcp>\n");
}
- if ((def->dns != NULL) && (def->dns->ntxtrecords)) {
- int ii;
-
+ if (def->dns != NULL) {
virBufferAddLit(buf, " <dns>\n");
- for (ii = 0 ; ii < def->dns->ntxtrecords ; ii++) {
- virBufferVSprintf(buf, " <txt-record name='%s' value='%s' />\n",
- def->dns->txtrecords[ii].name,
- def->dns->txtrecords[ii].value);
+
+ if (def->dns->ntxtrecords) {
+ int ii;
+
+ for (ii = 0 ; ii < def->dns->ntxtrecords; ii++) {
+ virBufferVSprintf(buf, " <txt-record name='%s' value='%s' />\n",
+ def->dns->txtrecords[ii].name,
+ def->dns->txtrecords[ii].value);
+ }
+ }
+ if (def->dns->nhosts) {
+ int ii, j;
+ char **iplist = NULL;
+ int iplist_size = 0;
+ bool in_list;
+
+ if (VIR_ALLOC(iplist) < 0)
+ goto error;
+
+ for (ii = 0 ; ii < def->dns->nhosts; ii++) {
+ char *ip = virSocketFormatAddr(&def->dns->hosts[ii].ip);
+ in_list = false;
+ for (j = 0; j < iplist_size; j++)
+ if (STREQ(iplist[j], ip))
+ in_list = true;
+
+ if (!in_list) {
+ virBufferVSprintf(buf, " <host ip='%s'>\n", ip);
+
+ for (j = 0 ; j < def->dns->nhosts; j++) {
+ char *thisip = virSocketFormatAddr(&def->dns->hosts[j].ip);
+ if (STREQ(ip, thisip))
+ virBufferVSprintf(buf, " <hostname>%s</hostname>\n",
+ def->dns->hosts[j].name);
+ }
+ virBufferVSprintf(buf, " </host>\n");
+
+ if (VIR_REALLOC_N(iplist, iplist_size + 1) < 0)
+ goto error;
+
+ iplist[iplist_size] = strdup(ip);
+ iplist_size++;
+ }
+ }
+
+ for (j = 0; j < iplist_size; j++)
+ VIR_FREE(iplist[j]);
+ VIR_FREE(iplist);
}
+
virBufferAddLit(buf, " </dns>\n");
- }
+ }
virBufferAddLit(buf, " </ip>\n");
diff --git a/src/conf/network_conf.h b/src/conf/network_conf.h
index 5f47595..305ef0f 100644
--- a/src/conf/network_conf.h
+++ b/src/conf/network_conf.h
@@ -64,9 +64,18 @@ struct _virNetworkDNSTxtRecordsDef {
char *value;
};
+struct virNetworkDNSHostsDef {
+ virSocketAddr ip;
+ char *name;
+} virNetworkDNSHostsDef;
+
+typedef struct virNetworkDNSHostsDef *virNetworkDNSHostsDefPtr;
+
struct virNetworkDNSDef {
unsigned int ntxtrecords;
+ unsigned int nhosts;
virNetworkDNSTxtRecordsDefPtr txtrecords;
+ virNetworkDNSHostsDefPtr hosts;
} virNetworkDNSDef;
typedef struct virNetworkDNSDef *virNetworkDNSDefPtr;
diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c
index 4ad3143..99a61b0 100644
--- a/src/network/bridge_driver.c
+++ b/src/network/bridge_driver.c
@@ -434,13 +434,20 @@ networkSaveDnsmasqHostsfile(virNetworkIpDefPtr ipdef,
goto cleanup;
}
- if (! force && virFileExists(dctx->hostsfile->path))
- return 0;
+ if (!(! force && virFileExists(dctx->hostsfile->path))) {
+ for (i = 0; i < ipdef->nhosts; i++) {
+ virNetworkDHCPHostDefPtr host = &(ipdef->hosts[i]);
+ if ((host->mac) && VIR_SOCKET_HAS_ADDR(&host->ip))
+ dnsmasqAddDhcpHost(dctx, host->mac, &host->ip, host->name);
+ }
+ }
- for (i = 0; i < ipdef->nhosts; i++) {
- virNetworkDHCPHostDefPtr host = &(ipdef->hosts[i]);
- if ((host->mac) && VIR_SOCKET_HAS_ADDR(&host->ip))
- dnsmasqAddDhcpHost(dctx, host->mac, &host->ip, host->name);
+ if (ipdef->dns) {
+ for (i = 0; i < ipdef->dns->nhosts; i++) {
+ virNetworkDNSHostsDefPtr host = &(ipdef->dns->hosts[i]);
+ if (VIR_SOCKET_HAS_ADDR(&host->ip))
+ dnsmasqAddHost(dctx, &host->ip, host->name);
+ }
}
if (dnsmasqSave(dctx) < 0)
@@ -589,6 +596,7 @@ networkBuildDnsmasqArgv(virNetworkObjPtr network,
if (dctx->hostsfile->nhosts)
virCommandAddArgPair(cmd, "--dhcp-hostsfile",
dctx->hostsfile->path);
+ VIR_DEBUG("ADDN HOSTS: %d => %p", dctx->addnhostsfile->nhosts, ipdef->dns);
if (dctx->addnhostsfile->nhosts)
virCommandAddArgPair(cmd, "--addn-hosts",
dctx->addnhostsfile->path);
diff --git a/tests/networkxml2argvdata/nat-network-dns-hosts.argv b/tests/networkxml2argvdata/nat-network-dns-hosts.argv
new file mode 100644
index 0000000..99dc724
--- /dev/null
+++ b/tests/networkxml2argvdata/nat-network-dns-hosts.argv
@@ -0,0 +1 @@
+/usr/sbin/dnsmasq --strict-order --bind-interfaces --pid-file=/var/run/libvirt/network/default.pid --conf-file= --except-interface lo --listen-address 192.168.122.1 --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases --dhcp-lease-max=253 --dhcp-no-override --dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile --addn-hosts=/var/lib/libvirt/dnsmasq/default.addnhosts
diff --git a/tests/networkxml2argvdata/nat-network-dns-hosts.xml b/tests/networkxml2argvdata/nat-network-dns-hosts.xml
new file mode 100644
index 0000000..35ee151
--- /dev/null
+++ b/tests/networkxml2argvdata/nat-network-dns-hosts.xml
@@ -0,0 +1,19 @@
+<network>
+ <name>default</name>
+ <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid>
+ <forward dev='eth1' mode='nat'/>
+ <bridge name='virbr0' stp='on' delay='0' />
+ <ip address='192.168.122.1' netmask='255.255.255.0'>
+ <dhcp>
+ <range start='192.168.122.2' end='192.168.122.254' />
+ <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' />
+ <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' />
+ </dhcp>
+ <dns>
+ <host ip='192.168.122.1'>
+ <hostname>host</hostname>
+ <hostname>gateway</hostname>
+ </host>
+ </dns>
+ </ip>
+</network>
diff --git a/tests/networkxml2argvtest.c b/tests/networkxml2argvtest.c
index e3a8bb4..ce09206 100644
--- a/tests/networkxml2argvtest.c
+++ b/tests/networkxml2argvtest.c
@@ -112,6 +112,7 @@ mymain(int argc, char **argv)
DO_TEST("netboot-network");
DO_TEST("netboot-proxy-network");
DO_TEST("nat-network-dns-txt-record");
+ DO_TEST("nat-network-dns-hosts");
return (ret==0 ? EXIT_SUCCESS : EXIT_FAILURE);
}
diff --git a/tests/networkxml2xmlin/nat-network-dns-hosts.xml b/tests/networkxml2xmlin/nat-network-dns-hosts.xml
new file mode 100644
index 0000000..fe545cf
--- /dev/null
+++ b/tests/networkxml2xmlin/nat-network-dns-hosts.xml
@@ -0,0 +1,27 @@
+<network>
+ <name>default</name>
+ <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid>
+ <forward dev='eth1' mode='nat'/>
+ <bridge name='virbr0' stp='on' delay='0' />
+ <ip address='192.168.122.1' netmask='255.255.255.0'>
+ <dhcp>
+ <range start='192.168.122.2' end='192.168.122.254' />
+ <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' />
+ <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' />
+ </dhcp>
+ <dns>
+ <host ip='192.168.122.1'>
+ <hostname>host</hostname>
+ <hostname>gateway</hostname>
+ </host>
+ </dns>
+ </ip>
+ <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'>
+ </ip>
+ <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'>
+ </ip>
+ <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'>
+ </ip>
+ <ip family='ipv4' address='10.24.10.1'>
+ </ip>
+</network>
diff --git a/tests/networkxml2xmlout/nat-network-dns-hosts.xml b/tests/networkxml2xmlout/nat-network-dns-hosts.xml
new file mode 100644
index 0000000..fe545cf
--- /dev/null
+++ b/tests/networkxml2xmlout/nat-network-dns-hosts.xml
@@ -0,0 +1,27 @@
+<network>
+ <name>default</name>
+ <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid>
+ <forward dev='eth1' mode='nat'/>
+ <bridge name='virbr0' stp='on' delay='0' />
+ <ip address='192.168.122.1' netmask='255.255.255.0'>
+ <dhcp>
+ <range start='192.168.122.2' end='192.168.122.254' />
+ <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' />
+ <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' />
+ </dhcp>
+ <dns>
+ <host ip='192.168.122.1'>
+ <hostname>host</hostname>
+ <hostname>gateway</hostname>
+ </host>
+ </dns>
+ </ip>
+ <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'>
+ </ip>
+ <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'>
+ </ip>
+ <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'>
+ </ip>
+ <ip family='ipv4' address='10.24.10.1'>
+ </ip>
+</network>
diff --git a/tests/networkxml2xmltest.c b/tests/networkxml2xmltest.c
index beb00ef..f5c5715 100644
--- a/tests/networkxml2xmltest.c
+++ b/tests/networkxml2xmltest.c
@@ -91,6 +91,7 @@ mymain(int argc, char **argv)
DO_TEST("netboot-network");
DO_TEST("netboot-proxy-network");
DO_TEST("nat-network-dns-txt-record");
+ DO_TEST("nat-network-dns-hosts");
return (ret==0 ? EXIT_SUCCESS : EXIT_FAILURE);
}
--
1.7.3.2
More information about the libvir-list
mailing list