tests: Avoid use of virQEMUDriverCreateXMLConf(NULL)

We use the function to create a virDomainXMLOption object that is
required for some functions. However, we don't pass the driver
pointer to the object anywhere - rather than pass NULL. This
causes trouble later when parsing a domain XML and calling post
parse callbacks:

  Program received signal SIGSEGV, Segmentation fault.
  0x000000000043fa3e in qemuDomainDefPostParse (def=0x7d36c0, caps=0x7caf10, opaque=0x0) at qemu/qemu_domain.c:1043
  1043        qemuCaps = virQEMUCapsCacheLookup(driver->qemuCapsCache, def->emulator);
  (gdb) bt
  #0  0x000000000043fa3e in qemuDomainDefPostParse (def=0x7d36c0, caps=0x7caf10, opaque=0x0) at qemu/qemu_domain.c:1043
  #1  0x00007ffff2928bf9 in virDomainDefPostParse (def=0x7d36c0, caps=0x7caf10, xmlopt=0x7c82c0) at conf/domain_conf.c:4269
  #2  0x00007ffff294de04 in virDomainDefParseXML (xml=0x7da8c0, root=0x7dab80, ctxt=0x7da980, caps=0x7caf10, xmlopt=0x7c82c0, flags=0) at conf/domain_conf.c:16400
  #3  0x00007ffff294e5b5 in virDomainDefParseNode (xml=0x7da8c0, root=0x7dab80, caps=0x7caf10, xmlopt=0x7c82c0, flags=0) at conf/domain_conf.c:16582
  #4  0x00007ffff294e424 in virDomainDefParse (xmlStr=0x0, filename=0x7c7ef0 "/home/zippy/work/libvirt/libvirt.git/tests/securityselinuxlabeldata/disks.xml", caps=0x7caf10, xmlopt=0x7c82c0, flags=0) at conf/domain_conf.c:16529
  #5  0x00007ffff294e4b2 in virDomainDefParseFile (filename=0x7c7ef0 "/home/zippy/work/libvirt/libvirt.git/tests/securityselinuxlabeldata/disks.xml", caps=0x7caf10, xmlopt=0x7c82c0, flags=0) at conf/domain_conf.c:16553
  #6  0x00000000004303ca in testSELinuxLoadDef (testname=0x53c929 "disks") at securityselinuxlabeltest.c:192
  #7  0x00000000004309e8 in testSELinuxLabeling (opaque=0x53c929) at securityselinuxlabeltest.c:313
  #8  0x0000000000431207 in virtTestRun (title=0x53c92f "Labelling \"disks\"", body=0x430964 <testSELinuxLabeling>, data=0x53c929) at testutils.c:211
  #9  0x0000000000430c5d in mymain () at securityselinuxlabeltest.c:373
  #10 0x00000000004325c2 in virtTestMain (argc=1, argv=0x7fffffffd7e8, func=0x430b4a <mymain>) at testutils.c:863
  #11 0x0000000000430deb in main (argc=1, argv=0x7fffffffd7e8) at securityselinuxlabeltest.c:381
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

tests/qemucapabilitiestest.c

@@ -160,7 +160,7 @@ static int
 mymain(void)
 {
     int ret = 0;
-    virDomainXMLOptionPtr xmlopt;
+    virQEMUDriver driver;
     testQemuData data;
 
 #if !WITH_YAJL
@@ -169,12 +169,12 @@ mymain(void)
 #endif
 
     if (virThreadInitialize() < 0 ||
-        !(xmlopt = virQEMUDriverCreateXMLConf(NULL)))
+        qemuTestDriverInit(&driver) < 0)
         return EXIT_FAILURE;
 
     virEventRegisterDefaultImpl();
 
-    data.xmlopt = xmlopt;
+    data.xmlopt = driver.xmlopt;
 
 #define DO_TEST(name)                                   \
     do {                                                \
@@ -191,7 +191,8 @@ mymain(void)
     DO_TEST("caps_1.6.50-1");
     DO_TEST("caps_2.1.1-1");
 
-    virObjectUnref(xmlopt);
+    qemuTestDriverFree(&driver);
+
     return (ret == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
 }
 

tests/qemumonitorjsontest.c

@@ -2238,7 +2238,7 @@ static int
 mymain(void)
 {
     int ret = 0;
-    virDomainXMLOptionPtr xmlopt;
+    virQEMUDriver driver;
     testQemuMonitorJSONSimpleFuncData simpleFunc;
 
 #if !WITH_YAJL
@@ -2247,29 +2247,30 @@ mymain(void)
 #endif
 
     if (virThreadInitialize() < 0 ||
-        !(xmlopt = virQEMUDriverCreateXMLConf(NULL)))
+        qemuTestDriverInit(&driver) < 0)
         return EXIT_FAILURE;
 
     virEventRegisterDefaultImpl();
 
-#define DO_TEST(name)                                                   \
-    if (virtTestRun(# name, testQemuMonitorJSON ## name, xmlopt) < 0)   \
+#define DO_TEST(name)                                                          \
+    if (virtTestRun(# name, testQemuMonitorJSON ## name, driver.xmlopt) < 0)   \
         ret = -1
 
 #define DO_TEST_SIMPLE(CMD, FNC, ...)                                   \
     simpleFunc = (testQemuMonitorJSONSimpleFuncData) {.cmd = CMD, .func = FNC, \
-                                              .xmlopt = xmlopt, __VA_ARGS__ }; \
+                                       .xmlopt = driver.xmlopt, __VA_ARGS__ }; \
     if (virtTestRun(# FNC, testQemuMonitorJSONSimpleFunc, &simpleFunc) < 0)    \
         ret = -1
 
 #define DO_TEST_GEN(name, ...) \
-    simpleFunc = (testQemuMonitorJSONSimpleFuncData) {.xmlopt = xmlopt, __VA_ARGS__ }; \
-    if (virtTestRun(# name, testQemuMonitorJSON ## name, &simpleFunc) < 0) \
+    simpleFunc = (testQemuMonitorJSONSimpleFuncData) {.xmlopt = driver.xmlopt, \
+                                                     __VA_ARGS__ };            \
+    if (virtTestRun(# name, testQemuMonitorJSON ## name, &simpleFunc) < 0)     \
         ret = -1
 
 #define DO_TEST_CPU_DATA(name) \
     do {                                                                  \
-        struct testCPUData data = { name, xmlopt };                       \
+        struct testCPUData data = { name, driver.xmlopt };                \
         const char *label = "GetCPUData(" name ")";                       \
         if (virtTestRun(label, testQemuMonitorJSONGetCPUData, &data) < 0) \
             ret = -1;                                                     \
@@ -2347,7 +2348,7 @@ mymain(void)
     DO_TEST_CPU_DATA("host");
     DO_TEST_CPU_DATA("full");
 
-    virObjectUnref(xmlopt);
+    qemuTestDriverFree(&driver);
 
     return (ret == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
 }

tests/qemumonitortest.c

@@ -14,6 +14,7 @@
 # include "qemu/qemu_monitor.h"
 # include "qemu/qemu_monitor_text.h"
 # include "qemumonitortestutils.h"
+# include "testutilsqemu.h"
 
 # define VIR_FROM_THIS VIR_FROM_NONE
 
@@ -164,11 +165,11 @@ testMonitorTextBlockInfo(const void *opaque)
 static int
 mymain(void)
 {
-    virDomainXMLOptionPtr xmlopt;
+    virQEMUDriver driver;
     int result = 0;
 
     if (virThreadInitialize() < 0 ||
-        !(xmlopt = virQEMUDriverCreateXMLConf(NULL)))
+        qemuTestDriverInit(&driver) < 0)
         return EXIT_FAILURE;
 
     virEventRegisterDefaultImpl();
@@ -176,7 +177,7 @@ mymain(void)
 # define DO_TEST(_name)                                                 \
     do {                                                                \
         if (virtTestRun("qemu monitor "#_name, test##_name,             \
-                        xmlopt) < 0) {                                  \
+                        driver.xmlopt) < 0) {                           \
             result = -1;                                                \
         }                                                               \
     } while (0)
@@ -185,7 +186,7 @@ mymain(void)
     DO_TEST(UnescapeArg);
     DO_TEST(MonitorTextBlockInfo);
 
-    virObjectUnref(xmlopt);
+    qemuTestDriverFree(&driver);
 
     return result == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
 }

tests/securityselinuxlabeltest.c

@@ -46,7 +46,7 @@
 VIR_LOG_INIT("tests.securityselinuxlabeltest");
 
 static virCapsPtr caps;
-static virDomainXMLOptionPtr xmlopt;
+static virQEMUDriver driver;
 
 static virSecurityManagerPtr mgr;
 
@@ -189,7 +189,7 @@ testSELinuxLoadDef(const char *testname)
                     abs_srcdir, testname) < 0)
         goto cleanup;
 
-    if (!(def = virDomainDefParseFile(xmlfile, caps, xmlopt, 0)))
+    if (!(def = virDomainDefParseFile(xmlfile, caps, driver.xmlopt, 0)))
         goto cleanup;
 
     for (i = 0; i < def->ndisks; i++) {
@@ -361,7 +361,7 @@ mymain(void)
     if ((caps = testQemuCapsInit()) == NULL)
         return EXIT_FAILURE;
 
-    if (!(xmlopt = virQEMUDriverCreateXMLConf(NULL)))
+    if (qemuTestDriverInit(&driver) < 0)
         return EXIT_FAILURE;
 
 #define DO_TEST_LABELING(name)                                           \
@@ -375,6 +375,8 @@ mymain(void)
     DO_TEST_LABELING("chardev");
     DO_TEST_LABELING("nfs");
 
+    qemuTestDriverFree(&driver);
+
     return (ret == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
 }