qemu: monitor: Extract data about dirty-bimaps in qemuMonitorBlockGetNamedNodeData

We will need to inspect the presence and attributes for dirty bitmaps.
Extract them when processing reply of query-named-block-nodes.
Signed-off-by: NPeter Krempa <pkrempa@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>

src/qemu/qemu_monitor.h

@@ -676,12 +676,27 @@ int qemuMonitorBlockStatsUpdateCapacityBlockdev(qemuMonitorPtr mon,
                                                 virHashTablePtr stats)
     ATTRIBUTE_NONNULL(2);
 
+typedef struct _qemuBlockNamedNodeDataBitmap qemuBlockNamedNodeDataBitmap;
+typedef qemuBlockNamedNodeDataBitmap *qemuBlockNamedNodeDataBitmapPtr;
+struct _qemuBlockNamedNodeDataBitmap {
+    char *name;
+    bool recording;
+    bool busy;
+    bool persistent;
+    bool inconsistent;
+
+    unsigned long long dirtybytes;
+    unsigned long long granularity;
+};
 
 typedef struct _qemuBlockNamedNodeData qemuBlockNamedNodeData;
 typedef qemuBlockNamedNodeData *qemuBlockNamedNodeDataPtr;
 struct _qemuBlockNamedNodeData {
     unsigned long long capacity;
     unsigned long long physical;
+
+    qemuBlockNamedNodeDataBitmapPtr *bitmaps;
+    size_t nbitmaps;
 };
 
 virHashTablePtr

src/qemu/qemu_monitor_json.c

@@ -2868,14 +2868,84 @@ qemuMonitorJSONBlockStatsUpdateCapacityBlockdev(qemuMonitorPtr mon,
 }
 
 
+static void
+qemuMonitorJSONBlockNamedNodeDataBitmapFree(qemuBlockNamedNodeDataBitmapPtr bitmap)
+{
+    if (!bitmap)
+        return;
+
+    g_free(bitmap->name);
+    g_free(bitmap);
+}
+
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(qemuBlockNamedNodeDataBitmap,
+                              qemuMonitorJSONBlockNamedNodeDataBitmapFree);
+
+
 static void
 qemuMonitorJSONBlockNamedNodeDataFree(qemuBlockNamedNodeDataPtr data)
 {
+    size_t i;
+
+    if (!data)
+        return;
+
+    for (i = 0; i < data->nbitmaps; i++)
+        qemuMonitorJSONBlockNamedNodeDataBitmapFree(data->bitmaps[i]);
+    g_free(data->bitmaps);
     g_free(data);
 }
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(qemuBlockNamedNodeData, qemuMonitorJSONBlockNamedNodeDataFree);
 
 
+static qemuBlockNamedNodeDataBitmapPtr
+qemuMonitorJSONBlockGetNamedNodeDataBitmapOne(virJSONValuePtr val)
+{
+    g_autoptr(qemuBlockNamedNodeDataBitmap) bitmap = NULL;
+    const char *name;
+
+    bitmap = g_new0(qemuBlockNamedNodeDataBitmap, 1);
+
+    if (!(name = virJSONValueObjectGetString(val, "name")))
+        return NULL;
+
+    bitmap->name = g_strdup(name);
+
+    ignore_value(virJSONValueObjectGetBoolean(val, "recording", &bitmap->recording));
+    ignore_value(virJSONValueObjectGetBoolean(val, "persistent", &bitmap->persistent));
+    ignore_value(virJSONValueObjectGetBoolean(val, "busy", &bitmap->busy));
+    ignore_value(virJSONValueObjectGetBoolean(val, "inconsistent", &bitmap->inconsistent));
+    ignore_value(virJSONValueObjectGetNumberUlong(val, "granularity", &bitmap->granularity));
+    ignore_value(virJSONValueObjectGetNumberUlong(val, "count", &bitmap->dirtybytes));
+
+    return g_steal_pointer(&bitmap);
+}
+
+
+static void
+qemuMonitorJSONBlockGetNamedNodeDataBitmaps(virJSONValuePtr bitmaps,
+                                            qemuBlockNamedNodeDataPtr data)
+{
+    size_t nbitmaps = virJSONValueArraySize(bitmaps);
+    size_t i;
+
+    data->bitmaps = g_new0(qemuBlockNamedNodeDataBitmapPtr, nbitmaps);
+
+    for (i = 0; i < nbitmaps; i++) {
+        virJSONValuePtr bitmap = virJSONValueArrayGet(bitmaps, i);
+        qemuBlockNamedNodeDataBitmapPtr tmp;
+
+        if (!bitmap)
+            continue;
+
+        if (!(tmp = qemuMonitorJSONBlockGetNamedNodeDataBitmapOne(bitmap)))
+            continue;
+
+        data->bitmaps[data->nbitmaps++] = tmp;
+    }
+}
+
+
 static int
 qemuMonitorJSONBlockGetNamedNodeDataWorker(size_t pos G_GNUC_UNUSED,
                                            virJSONValuePtr val,
@@ -2883,6 +2953,7 @@ qemuMonitorJSONBlockGetNamedNodeDataWorker(size_t pos G_GNUC_UNUSED,
 {
     virHashTablePtr nodes = opaque;
     virJSONValuePtr img;
+    virJSONValuePtr bitmaps;
     const char *nodename;
     g_autoptr(qemuBlockNamedNodeData) ent = NULL;
 
@@ -2899,6 +2970,9 @@ qemuMonitorJSONBlockGetNamedNodeDataWorker(size_t pos G_GNUC_UNUSED,
     if (virJSONValueObjectGetNumberUlong(img, "actual-size", &ent->physical) < 0)
         ent->physical = ent->capacity;
 
+    if ((bitmaps = virJSONValueObjectGetArray(val, "dirty-bitmaps")))
+        qemuMonitorJSONBlockGetNamedNodeDataBitmaps(bitmaps, ent);
+
     if (virHashAddEntry(nodes, nodename, ent) < 0)
         return -1;