On Sun, Sep 01, 2013 at 07:13:33PM +0530, Nehal J Wani wrote:
+int
+qemuAgentGetInterfaces(qemuAgentPtr mon,
+ virDomainInterfacePtr **ifaces)
+{
+
+ /* interface name is required to be presented */
+ name = virJSONValueObjectGetString(tmp_iface, "name");
+ if (!name) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("qemu agent didn't provide 'name'
field"));
+ goto error;
+ }
+
+ /* Handle aliases of type <ifname>:<alias-name> */
+ ifname = virStringSplit(name, ":", 2);
+ ifname_s = ifname[0];
+
+ iface = virHashLookup(ifaces_store, ifname_s);
+
+ /* If the storage bag doesn't contain this iface, add it */
+ if (!iface) {
+ if (VIR_EXPAND_N(ifaces_ret, ifaces_count, 1) < 0)
+ goto cleanup;
+
+ if (VIR_ALLOC(ifaces_ret[ifaces_count - 1]) < 0)
+ goto cleanup;
+
+ if (virHashAddEntry(ifaces_store, ifname_s,
+ ifaces_ret[ifaces_count - 1]) < 0)
+ goto cleanup;
+
+ iface = ifaces_ret[ifaces_count - 1];
+ iface->naddrs = 0;
+
+ if (VIR_STRDUP(iface->name, ifname_s) < 0)
+ goto error;
+
+ /* hwaddr might be omitted */
Really ? Can qemu guest agent report interfacs with 'hardware-address'
field not being present ? I'd expect that field to be mandatory and
so report an error in libvirt if missing.
+ hwaddr = virJSONValueObjectGetString(tmp_iface,
"hardware-address");
+ if (hwaddr && VIR_STRDUP(iface->hwaddr, hwaddr) < 0)
+ goto error;
+ }
+
+ /* Has to be freed for each interface. */
+ virStringFreeList(ifname);
You're leaking 'ifname' if any of the 'goto xxxx' branches are
taken above.
+
+ /* as well as IP address which - moreover -
+ * can be presented multiple times */
+ ip_addr_arr = virJSONValueObjectGet(tmp_iface, "ip-addresses");
+ if (!ip_addr_arr)
+ continue;
+
+ if ((ip_addr_arr_size = virJSONValueArraySize(ip_addr_arr)) < 0)
+ /* Mmm, empty 'ip-address'? */
+ continue;
The '< 0' condition indicates an error scenario, so shouldn't be
silently ignored. '== 0' is the empty list scenario that is ok
to ignore, but already handled by the for() loop conditions.
+
+ /* If current iface already exists, continue with the count */
+ addrs_count = iface->naddrs;
+
+ for (j = 0; j < ip_addr_arr_size; j++) {
+
diff --git a/tests/qemuagenttest.c b/tests/qemuagenttest.c
index 4e27981..4014a09 100644
--- a/tests/qemuagenttest.c
+++ b/tests/qemuagenttest.c
@@ -576,6 +576,154 @@ cleanup:
return ret;
}
+static const char testQemuAgentGetInterfacesResponse[] =
+ "{\"return\": "
+ " ["
+ " {\"name\":\"lo\","
+ " \"ip-addresses\":"
+ " ["
+ " {\"ip-address-type\":\"ipv4\","
+ " \"ip-address\":\"127.0.0.1\","
+ " \"prefix\":8"
+ " },"
+ " {\"ip-address-type\":\"ipv6\","
+ " \"ip-address\":\"::1\","
+ " \"prefix\":128"
+ " }"
+ " ],"
+ " \"hardware-address\":\"00:00:00:00:00:00\""
+ " },"
+ " {\"name\":\"eth0\","
+ " \"ip-addresses\":"
+ " ["
+ " {\"ip-address-type\":\"ipv4\","
+ " \"ip-address\":\"192.168.102.142\","
+ " \"prefix\":24"
+ " },"
+ " {\"ip-address-type\":\"ipv6\","
+ "
\"ip-address\":\"fe80::5054:ff:fe89:ad35\","
+ " \"prefix\":64"
+ " },"
+ " {\"ip-address-type\":\"ipv4\","
+ " \"ip-address\":\"192.168.234.152\","
+ " \"prefix\":16"
+ " },"
+ " {\"ip-address-type\":\"ipv6\","
+ "
\"ip-address\":\"fe80::5054:ff:fec3:68bb\","
+ " \"prefix\":64"
+ " }"
+ " ],"
+ " \"hardware-address\":\"52:54:00:89:ad:35\""
+ " },"
+ " {\"name\":\"eth1\","
+ " \"ip-addresses\":"
+ " ["
+ " {\"ip-address-type\":\"ipv4\","
+ " \"ip-address\":\"192.168.103.83\","
+ " \"prefix\":24"
+ " },"
+ " {\"ip-address-type\":\"ipv6\","
+ "
\"ip-address\":\"fe80::5054:ff:fed3:39ee\","
+ " \"prefix\":64"
+ " }"
+ " ],"
+ " \"hardware-address\":\"52:54:00:d3:39:ee\""
+ " },"
+ " {\"name\":\"eth1:0\","
+ " \"ip-addresses\":"
+ " ["
+ " {\"ip-address-type\":\"ipv4\","
+ " \"ip-address\":\"192.168.10.91\","
+ " \"prefix\":24"
+ " },"
+ " {\"ip-address-type\":\"ipv6\","
+ "
\"ip-address\":\"fe80::fc54:ff:fefe:4c4f\","
+ " \"prefix\":64"
+ " }"
+ " ],"
+ " \"hardware-address\":\"52:54:00:d3:39:ee\""
+ " },"
+ " {\"name\":\"eth2\","
+ " \"hardware-address\":\"52:54:00:36:2a:e5\""
+ " }"
+ " ]"
+ "}";
I'd re-arrange these a little, eg so that 'eth2' comes
before 'eth1:1', just so that we validate that we're
coping with things in a non-obvious sort order.
+
+static int
+testQemuAgentGetInterfaces(const void *data)
+{
+ virDomainXMLOptionPtr xmlopt = (virDomainXMLOptionPtr)data;
+ qemuMonitorTestPtr test = qemuMonitorTestNewAgent(xmlopt);
+ size_t i;
+ int ret = -1;
+ int ifaces_count = 0;
+ virDomainInterfacePtr *ifaces = NULL;
+
+ if (!test)
+ return -1;
+
+ if (qemuMonitorTestAddAgentSyncResponse(test) < 0)
+ goto cleanup;
+
+ if (qemuMonitorTestAddItem(test, "guest-network-get-interfaces",
+ testQemuAgentGetInterfacesResponse) < 0)
+ goto cleanup;
+
+ if ((ifaces_count = qemuAgentGetInterfaces(qemuMonitorTestGetAgent(test),
+ &ifaces)) < 0)
+ goto cleanup;
+
+ if (ifaces_count != 4) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ "expected 4 interfaces, got %d", ret);
+ goto cleanup;
+ }
+
+ if (ifaces[0]->naddrs != 2 ||
+ ifaces[1]->naddrs != 4 ||
+ ifaces[2]->naddrs != 4 ||
+ ifaces[3]->naddrs != 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ "unexpected return value for number of IP addresses");
+ goto cleanup;
+ }
+
+ if (STRNEQ(ifaces[0]->name, "lo") ||
+ STRNEQ(ifaces[0]->addrs[0].addr, "127.0.0.1") ||
+ ifaces[0]->addrs[1].prefix != 128) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ "unexpected return values for interface: lo");
+ goto cleanup;
+ }
+
+ if (STRNEQ(ifaces[1]->hwaddr, "52:54:00:89:ad:35") ||
+ ifaces[1]->addrs[0].prefix != 24 ||
+ ifaces[1]->addrs[1].type != VIR_IP_ADDR_TYPE_IPV6) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ "unexpected return values for interface: eth0");
+ goto cleanup;
+ }
+
+ if (STRNEQ(ifaces[2]->name, "eth1") ||
+ ifaces[2]->addrs[0].type != VIR_IP_ADDR_TYPE_IPV4 ||
+ STRNEQ(ifaces[2]->addrs[1].addr, "fe80::5054:ff:fed3:39ee")) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ "unexpected return values for interface: eth1");
+ goto cleanup;
+ }
You're only validating a couple of the IP addresses here & MAC addrs
and names. I'd like to see all of them validated for all NIC. This
would give us higher confidence that we're correctly merging eth1
and eth1:0 together.
Daniel
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