[PATCH v1 7/7] conf: Format device alias into inactive XML too

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Now that we are generating the device aliases at the define time,
we might as well format them into inactive XML.

Signed-off-by: Michal Privoznik <mprivozn@xxxxxxxxxx>
---

I've trimmed out all the test/ XML changes. I've generated them using:

tests $ VIR_TEST_REGENERATE_OUTPUT=1 ./test

With the changes in this patch would be ~1MB in size. If interested regenerate
them on your own. Alternatively, you can find them at my github.

 src/conf/domain_conf.c                             |   7 +-
 tests/qemuxml2xmltest.c                            |  63 ++++++++++-
 489 files changed, 7417 insertions(+), 1623 deletions(-)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 653357531..ae38bae47 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -5770,10 +5770,9 @@ virDomainDeviceInfoFormat(virBufferPtr buf,
 
         virBufferAddLit(buf, "/>\n");
     }
-    if (info->alias &&
-        !(flags & VIR_DOMAIN_DEF_FORMAT_INACTIVE)) {
+
+    if (info->alias)
         virBufferAsprintf(buf, "<alias name='%s'/>\n", info->alias);
-    }
 
     if (info->mastertype == VIR_DOMAIN_CONTROLLER_MASTER_USB) {
         virBufferAsprintf(buf, "<master startport='%d'/>\n",
@@ -6333,7 +6332,7 @@ virDomainDeviceInfoParseXML(xmlNodePtr node,
     while (cur != NULL) {
         if (cur->type == XML_ELEMENT_NODE) {
             if (alias == NULL &&
-                !(flags & VIR_DOMAIN_DEF_PARSE_INACTIVE) &&
+                !(flags & VIR_DOMAIN_DEF_PARSE_ABI_UPDATE) &&
                 virXMLNodeNameEqual(cur, "alias")) {
                 alias = cur;
             } else if (address == NULL &&
diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
index 4b2fbd990..c9afafe14 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -13,11 +13,16 @@
 #ifdef WITH_QEMU
 
 # include "internal.h"
+# include "qemu/qemu_alias.h"
 # include "qemu/qemu_domain_address.h"
 # include "qemu/qemu_domain.h"
 # include "testutilsqemu.h"
 # include "virstring.h"
 
+# define __QEMU_CAPSPRIV_H_ALLOW__
+# include "qemu/qemu_capspriv.h"
+# undef __QEMU_CAPSPRIV_H_ALLOW__
+
 # define VIR_FROM_THIS VIR_FROM_NONE
 
 static virQEMUDriver driver;
@@ -38,6 +43,25 @@ struct testInfo {
     virQEMUCapsPtr qemuCaps;
 };
 
+
+static int
+testUpdateQEMUCaps(virDomainDefPtr def,
+                   virQEMUCapsPtr qemuCaps)
+{
+    virQEMUCapsSetArch(qemuCaps, def->os.arch);
+
+    virQEMUCapsInitQMPBasicArch(qemuCaps);
+
+    /* We need to pretend QEMU 2.0.0 is in use so that pSeries guests
+     * will get the correct alias assigned to their buses.
+     * See virQEMUCapsHasPCIMultiBus() */
+    virQEMUCapsSetVersion(qemuCaps, 2000000);
+
+    return 0;
+}
+
+
+
 static int
 qemuXML2XMLActivePreFormatCallback(virDomainDefPtr def,
                                    const void *opaque)
@@ -48,6 +72,19 @@ qemuXML2XMLActivePreFormatCallback(virDomainDefPtr def,
     if (!info->activeVcpus)
         info->activeVcpus = virDomainDefGetOnlineVcpumap(def);
 
+    /* Update capabilities according to domain definition,
+     * just like we're doing in qemuxml2argvtest. */
+    testUpdateQEMUCaps(def, info->qemuCaps);
+
+    /* Forcibly regenerate device aliases. They are generated in
+     * virDomainDefParseFile(), however, qemuCaps are filled out
+     * just partially therefore the generated aliases might be
+     * wrong. It's only after testUpdateQEMUCaps() call that we
+     * have full set of caps. However, we can't move the call any
+     * sooner because it needs vm->def. */
+    if (qemuAssignDeviceAliases(def, info->qemuCaps, true) < 0)
+        return -1;
+
     return 0;
 }
 
@@ -64,6 +101,29 @@ testXML2XMLActive(const void *opaque)
 }
 
 
+static int
+qemuXML2XMLInactivePreFormatCallback(virDomainDefPtr def,
+                                     const void *opaque)
+{
+    struct testInfo *info = (struct testInfo *) opaque;
+
+    /* Update capabilities according to domain definition,
+     * just like we're doing in qemuxml2argvtest. */
+    testUpdateQEMUCaps(def, info->qemuCaps);
+
+    /* Forcibly regenerate device aliases. They are generated in
+     * virDomainDefParseFile(), however, qemuCaps are filled out
+     * just partially therefore the generated aliases might be
+     * wrong. It's only after testUpdateQEMUCaps() call that we
+     * have full set of caps. However, we can't move the call any
+     * sooner because it needs vm->def. */
+    if (qemuAssignDeviceAliases(def, info->qemuCaps, true) < 0)
+        return -1;
+
+    return 0;
+}
+
+
 static int
 testXML2XMLInactive(const void *opaque)
 {
@@ -71,7 +131,8 @@ testXML2XMLInactive(const void *opaque)
 
     return testCompareDomXML2XMLFiles(driver.caps, driver.xmlopt, info->inName,
                                       info->outInactiveName, false,
-                                      NULL, opaque, 0,
+                                      qemuXML2XMLInactivePreFormatCallback,
+                                      opaque, 0,
                                       TEST_COMPARE_DOM_XML2XML_RESULT_SUCCESS);
 }
 
-- 
2.13.5

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