tools: virsh: Add virshCellnoCompleter.

Signed-off-by: Roland Schulz <schullzroll@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>

tools/virsh-completer.c

@@ -756,3 +756,58 @@ virshNodedevEventNameCompleter(vshControl *ctl ATTRIBUTE_UNUSED,
     virStringListFree(ret);
     return NULL;
 }
+
+
+char **
+virshCellnoCompleter(vshControl *ctl,
+                     const vshCmd *cmd ATTRIBUTE_UNUSED,
+                     unsigned int flags)
+{
+    xmlXPathContextPtr ctxt = NULL;
+    virshControlPtr priv = ctl->privData;
+    unsigned int ncells = 0;
+    xmlNodePtr *cells = NULL;
+    xmlDocPtr doc = NULL;
+    size_t i = 0;
+    char *cap_xml = NULL;
+    char **ret = NULL;
+
+    virCheckFlags(0, NULL);
+
+    if (!priv->conn || virConnectIsAlive(priv->conn) <= 0)
+        goto error;
+
+    if (!(cap_xml = virConnectGetCapabilities(priv->conn)))
+        goto error;
+
+    if (!(doc = virXMLParseStringCtxt(cap_xml, _("capabilities"), &ctxt)))
+        goto error;
+
+    ncells = virXPathNodeSet("/capabilities/host/topology/cells/cell", ctxt, &cells);
+    if (ncells <= 0)
+        goto error;
+
+    if (VIR_ALLOC_N(ret, ncells + 1))
+        goto error;
+
+    for (i = 0; i < ncells; i++) {
+        if (!(ret[i] = virXMLPropString(cells[i], "id")))
+            goto error;
+    }
+
+ cleanup:
+    xmlXPathFreeContext(ctxt);
+    VIR_FREE(cells);
+    xmlFreeDoc(doc);
+    VIR_FREE(cap_xml);
+
+    return ret;
+
+ error:
+    if (ret) {
+        for (i = 0; i < ncells; i++)
+            VIR_FREE(ret[i]);
+    }
+    VIR_FREE(ret);
+    goto cleanup;
+}

tools/virsh-completer.h

@@ -94,4 +94,7 @@ char ** virshNodedevEventNameCompleter(vshControl *ctl,
                                        const vshCmd *cmd,
                                        unsigned int flags);
 
+char ** virshCellnoCompleter(vshControl *ctl,
+                             const vshCmd *cmd,
+                             unsigned int flags);
 #endif

tools/virsh-host.c

@@ -149,6 +149,7 @@ static const vshCmdInfo info_freecell[] = {
 static const vshCmdOptDef opts_freecell[] = {
     {.name = "cellno",
      .type = VSH_OT_INT,
+     .completer = virshCellnoCompleter,
      .help = N_("NUMA cell number")
     },
     {.name = "all",
@@ -274,6 +275,7 @@ static const vshCmdInfo info_freepages[] = {
 static const vshCmdOptDef opts_freepages[] = {
     {.name = "cellno",
      .type = VSH_OT_INT,
+     .completer = virshCellnoCompleter,
      .help = N_("NUMA cell number")
     },
     {.name = "pagesize",
@@ -483,6 +485,7 @@ static const vshCmdOptDef opts_allocpages[] = {
     },
     {.name = "cellno",
      .type = VSH_OT_INT,
+     .completer = virshCellnoCompleter,
      .help = N_("NUMA cell number")
     },
     {.name = "add",