[PATCH 05/13] qemu: domain: Store capability overrides in NULL-terminated string list

[Peter Krempa <pkrempa@xxxxxxxxxx>]

We always process the full list so there's no value in storing the count
separately.

Signed-off-by: Peter Krempa <pkrempa@xxxxxxxxxx>
---
 src/qemu/qemu_domain.c  | 28 ++++++++++++++--------------
 src/qemu/qemu_domain.h  |  2 --
 src/qemu/qemu_process.c | 13 ++++++-------
 3 files changed, 20 insertions(+), 23 deletions(-)

diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 21668cae4c..b2cbd3d6ba 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -3330,8 +3330,8 @@ qemuDomainXmlNsDefFree(qemuDomainXmlNsDef *def)
     }

     virStringListFreeCount(def->args, def->num_args);
-    virStringListFreeCount(def->capsadd, def->ncapsadd);
-    virStringListFreeCount(def->capsdel, def->ncapsdel);
+    g_strfreev(def->capsadd);
+    g_strfreev(def->capsdel);

     g_free(def->deprecationBehavior);

@@ -3447,10 +3447,10 @@ qemuDomainDefNamespaceParseCaps(qemuDomainXmlNsDef *nsdef,
         return -1;

     if (nnodesadd > 0) {
-        nsdef->capsadd = g_new0(char *, nnodesadd);
+        nsdef->capsadd = g_new0(char *, nnodesadd + 1);

         for (i = 0; i < nnodesadd; i++) {
-            if (!(nsdef->capsadd[nsdef->ncapsadd++] = virXMLPropString(nodesadd[i], "capability"))) {
+            if (!(nsdef->capsadd[i] = virXMLPropString(nodesadd[i], "capability"))) {
                 virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                                _("missing capability name"));
                 return -1;
@@ -3459,10 +3459,10 @@ qemuDomainDefNamespaceParseCaps(qemuDomainXmlNsDef *nsdef,
     }

     if (nnodesdel > 0) {
-        nsdef->capsdel = g_new0(char *, nnodesdel);
+        nsdef->capsdel = g_new0(char *, nnodesdel + 1);

         for (i = 0; i < nnodesdel; i++) {
-            if (!(nsdef->capsdel[nsdef->ncapsdel++] = virXMLPropString(nodesdel[i], "capability"))) {
+            if (!(nsdef->capsdel[i] = virXMLPropString(nodesdel[i], "capability"))) {
                 virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                                _("missing capability name"));
                 return -1;
@@ -3491,7 +3491,7 @@ qemuDomainDefNamespaceParse(xmlXPathContextPtr ctxt,
     nsdata->deprecationBehavior = virXPathString("string(./qemu:deprecation/@behavior)", ctxt);

     if (nsdata->num_args > 0 || nsdata->num_env > 0 ||
-        nsdata->ncapsadd > 0 || nsdata->ncapsdel > 0 ||
+        nsdata->capsadd || nsdata->capsdel ||
         nsdata->deprecationBehavior)
         *data = g_steal_pointer(&nsdata);

@@ -3533,19 +3533,19 @@ static void
 qemuDomainDefNamespaceFormatXMLCaps(virBuffer *buf,
                                     qemuDomainXmlNsDef *xmlns)
 {
-    size_t i;
+    GStrv n;

-    if (!xmlns->ncapsadd && !xmlns->ncapsdel)
+    if (!xmlns->capsadd && !xmlns->capsdel)
         return;

     virBufferAddLit(buf, "<qemu:capabilities>\n");
     virBufferAdjustIndent(buf, 2);

-    for (i = 0; i < xmlns->ncapsadd; i++)
-        virBufferEscapeString(buf, "<qemu:add capability='%s'/>\n", xmlns->capsadd[i]);
+    for (n = xmlns->capsadd; n && *n; n++)
+        virBufferEscapeString(buf, "<qemu:add capability='%s'/>\n", *n);

-    for (i = 0; i < xmlns->ncapsdel; i++)
-        virBufferEscapeString(buf, "<qemu:del capability='%s'/>\n", xmlns->capsdel[i]);
+    for (n = xmlns->capsdel; n && *n; n++)
+        virBufferEscapeString(buf, "<qemu:del capability='%s'/>\n", *n);

     virBufferAdjustIndent(buf, -2);
     virBufferAddLit(buf, "</qemu:capabilities>\n");
@@ -6616,7 +6616,7 @@ void qemuDomainObjCheckTaint(virQEMUDriver *driver,
         qemuDomainXmlNsDef *qemuxmlns = obj->def->namespaceData;
         if (qemuxmlns->num_args || qemuxmlns->num_env)
             qemuDomainObjTaint(driver, obj, VIR_DOMAIN_TAINT_CUSTOM_ARGV, logCtxt);
-        if (qemuxmlns->ncapsadd > 0 || qemuxmlns->ncapsdel > 0)
+        if (qemuxmlns->capsadd || qemuxmlns->capsdel)
             custom_hypervisor_feat = true;
     }

diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h
index 5f2814271d..aa3ed78094 100644
--- a/src/qemu/qemu_domain.h
+++ b/src/qemu/qemu_domain.h
@@ -471,10 +471,8 @@ struct _qemuDomainXmlNsDef {
     unsigned int num_env;
     qemuDomainXmlNsEnvTuple *env;

-    size_t ncapsadd;
     char **capsadd;

-    size_t ncapsdel;
     char **capsdel;

     /* We deliberately keep this as a string so that it's parsed only when
diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index 81af4f1a44..4264191a9a 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -5484,7 +5484,6 @@ qemuProcessStartUpdateCustomCaps(virDomainObj *vm)
     qemuDomainXmlNsDef *nsdef = vm->def->namespaceData;
     char **next;
     int tmp;
-    size_t i;

     if (cfg->capabilityfilters) {
         for (next = cfg->capabilityfilters; *next; next++) {
@@ -5500,22 +5499,22 @@ qemuProcessStartUpdateCustomCaps(virDomainObj *vm)
     }

     if (nsdef) {
-        for (i = 0; i < nsdef->ncapsadd; i++) {
-            if ((tmp = virQEMUCapsTypeFromString(nsdef->capsadd[i])) < 0) {
+        for (next = nsdef->capsadd; next && *next; next++) {
+            if ((tmp = virQEMUCapsTypeFromString(*next)) < 0) {
                 virReportError(VIR_ERR_INTERNAL_ERROR,
                                _("invalid qemu namespace capability '%s'"),
-                               nsdef->capsadd[i]);
+                               *next);
                 return -1;
             }

             virQEMUCapsSet(priv->qemuCaps, tmp);
         }

-        for (i = 0; i < nsdef->ncapsdel; i++) {
-            if ((tmp = virQEMUCapsTypeFromString(nsdef->capsdel[i])) < 0) {
+        for (next = nsdef->capsdel; next && *next; next++) {
+            if ((tmp = virQEMUCapsTypeFromString(*next)) < 0) {
                 virReportError(VIR_ERR_INTERNAL_ERROR,
                                _("invalid qemu namespace capability '%s'"),
-                               nsdef->capsdel[i]);
+                               *next);
                 return -1;
             }

-- 
2.31.1