[libvirt] [PATCHv2] network: check negative values in bridge queues

[Erik Skultety]

We already are checking for negative value, reporting an error, but
using wrong function and the check only succeeds when a value that
cannot be converted to number successfully is encountered. This patch
provides just a minor change in call of the right version
of function virStrToLong.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1138539
---
 src/conf/domain_conf.c                             |  2 +-
 .../qemuxml2argv-vhost_queues-invalid.xml          | 32 ++++++++++++++++++++++
 tests/qemuxml2argvtest.c                           |  1 +
 3 files changed, 34 insertions(+), 1 deletion(-)
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-vhost_queues-invalid.xml

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 9cb3ebd..694c6cb 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -7377,7 +7377,7 @@ virDomainNetDefParseXML(virDomainXMLOptionPtr xmlopt,
         }
         if (queues) {
             unsigned int q;
-            if (virStrToLong_ui(queues, NULL, 10, &q) < 0) {
+            if (virStrToLong_uip(queues, NULL, 10, &q) < 0) {
                 virReportError(VIR_ERR_XML_DETAIL,
                                _("'queues' attribute must be positive number: %s"),
                                queues);
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-vhost_queues-invalid.xml b/tests/qemuxml2argvdata/qemuxml2argv-vhost_queues-invalid.xml
new file mode 100644
index 0000000..300695a
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-vhost_queues-invalid.xml
@@ -0,0 +1,32 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>bba65c0e-c049-934f-b6aa-4e2c0582acdf</uuid>
+  <memory unit='KiB'>1048576</memory>
+  <currentMemory unit='KiB'>1048576</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='x86_64' machine='pc'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>restart</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu</emulator>
+    <disk type='file' device='disk'>
+      <source file='/dev/HostVG/QEMUGuest1'/>
+      <target dev='vda' bus='virtio'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
+    </disk>
+    <controller type='usb' index='0'/>
+    <controller type='ide' index='0'/>
+    <controller type='pci' index='0' model='pci-root'/>
+    <interface type='user'>
+      <mac address='52:54:00:e5:48:58'/>
+      <model type='virtio'/>
+      <driver name='vhost' queues='-5'/>
+    </interface>
+    <memballoon model='virtio'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 5c28253..0a0c8ec 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -954,6 +954,7 @@ mymain(void)
     DO_TEST_FAILURE("misc-enable-s4", NONE);
     DO_TEST("misc-no-reboot", NONE);
     DO_TEST("misc-uuid", QEMU_CAPS_NAME, QEMU_CAPS_UUID);
+    DO_TEST_PARSE_ERROR("vhost_queues-invalid", NONE);
     DO_TEST("net-vhostuser", QEMU_CAPS_DEVICE, QEMU_CAPS_NETDEV);
     DO_TEST("net-user", NONE);
     DO_TEST("net-virtio", NONE);
-- 
1.9.3