qemu_monitor_json: Don't check existence of "return" object

Whenever qemuMonitorJSONCheckError returns 0, the "return" object is
guaranteed to exist. Thus virJSONValueObjectGetObject will never fail to
get it. On the other hand, virJSONValueObjectGetArray may fail since the
"return" object may not be an array.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

src/qemu/qemu_monitor_json.c

@@ -1219,11 +1219,7 @@ qemuMonitorJSONGetStatus(qemuMonitorPtr mon,
     if (qemuMonitorJSONCheckError(cmd, reply) < 0)
         goto cleanup;
 
-    if (!(data = virJSONValueObjectGetObject(reply, "return"))) {
-        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                       _("query-status reply was missing return data"));
-        goto cleanup;
-    }
+    data = virJSONValueObjectGetObject(reply, "return");
 
     if (virJSONValueObjectGetBoolean(data, "running", running) < 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
@@ -1443,12 +1439,7 @@ int qemuMonitorJSONGetVirtType(qemuMonitorPtr mon,
     if (qemuMonitorJSONCheckError(cmd, reply) < 0)
         goto cleanup;
 
-
-    if (!(data = virJSONValueObjectGetObject(reply, "return"))) {
-        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                       _("info kvm reply was missing return data"));
-        goto cleanup;
-    }
+    data = virJSONValueObjectGetObject(reply, "return");
 
     if (virJSONValueObjectGetBoolean(data, "enabled", &val) < 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
@@ -1609,12 +1600,7 @@ qemuMonitorJSONGetBalloonInfo(qemuMonitorPtr mon,
     if (qemuMonitorJSONCheckError(cmd, reply) < 0)
         goto cleanup;
 
-    /* Success */
-    if (!(data = virJSONValueObjectGetObject(reply, "return"))) {
-        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                       _("info balloon reply was missing return data"));
-        goto cleanup;
-    }
+    data = virJSONValueObjectGetObject(reply, "return");
 
     if (virJSONValueObjectGetNumberUlong(data, "actual", &mem) < 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
@@ -1715,11 +1701,7 @@ int qemuMonitorJSONGetMemoryStats(qemuMonitorPtr mon,
     if (qemuMonitorJSONCheckError(cmd, reply) < 0)
         goto cleanup;
 
-    if (!(data = virJSONValueObjectGetObject(reply, "return"))) {
-        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                       _("qom-get reply was missing return data"));
-        goto cleanup;
-    }
+    data = virJSONValueObjectGetObject(reply, "return");
 
     if (!(statsdata = virJSONValueObjectGet(data, "stats"))) {
         VIR_DEBUG("data does not include 'stats'");
@@ -2679,11 +2661,7 @@ qemuMonitorJSONGetMigrationStatsReply(virJSONValuePtr reply,
     int rc;
     double mbps;
 
-    if (!(ret = virJSONValueObjectGetObject(reply, "return"))) {
-        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                       _("info migration reply was missing return data"));
-        return -1;
-    }
+    ret = virJSONValueObjectGetObject(reply, "return");
 
     if (!(statusstr = virJSONValueObjectGetString(ret, "status"))) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
@@ -2976,11 +2954,7 @@ qemuMonitorJSONGetDumpGuestMemoryCapability(qemuMonitorPtr mon,
     if (qemuMonitorJSONCheckError(cmd, reply) < 0)
         goto cleanup;
 
-    if (!(caps = virJSONValueObjectGetObject(reply, "return"))) {
-        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                       _("missing dump guest memory capabilities"));
-        goto cleanup;
-    }
+    caps = virJSONValueObjectGetObject(reply, "return");
 
     if (!(formats = virJSONValueObjectGetArray(caps, "formats"))) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
@@ -3160,11 +3134,6 @@ qemuMonitorJSONAddFd(qemuMonitorPtr mon, int fdset, int fd, const char *name)
     if (ret == 0) {
         virJSONValuePtr data = virJSONValueObjectGetObject(reply, "return");
 
-        if (!data) {
-            virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                           _("missing return information"));
-            goto error;
-        }
         if (virJSONValueObjectGetNumberInt(data, "fd", &ret) < 0) {
             virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                            _("incomplete return information"));
@@ -4745,11 +4714,7 @@ int qemuMonitorJSONGetVersion(qemuMonitorPtr mon,
     if (qemuMonitorJSONCheckError(cmd, reply) < 0)
         goto cleanup;
 
-    if (!(data = virJSONValueObjectGetObject(reply, "return"))) {
-        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                       _("query-version reply was missing 'return' data"));
-        goto cleanup;
-    }
+    data = virJSONValueObjectGetObject(reply, "return");
 
     if (!(qemu = virJSONValueObjectGetObject(data, "qemu"))) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
@@ -4815,13 +4780,8 @@ int qemuMonitorJSONGetMachines(qemuMonitorPtr mon,
     if (qemuMonitorJSONCheckError(cmd, reply) < 0)
         goto cleanup;
 
-    if (!(data = virJSONValueObjectGetArray(reply, "return"))) {
-        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                       _("query-machines reply was missing return data"));
-        goto cleanup;
-    }
-
-    if ((n = virJSONValueArraySize(data)) < 0) {
+    if (!(data = virJSONValueObjectGetArray(reply, "return")) ||
+        (n = virJSONValueArraySize(data)) < 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                        _("query-machines reply data was not an array"));
         goto cleanup;
@@ -4925,13 +4885,8 @@ qemuMonitorJSONGetCPUDefinitions(qemuMonitorPtr mon,
     if (qemuMonitorJSONCheckError(cmd, reply) < 0)
         goto cleanup;
 
-    if (!(data = virJSONValueObjectGetArray(reply, "return"))) {
-        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                       _("query-cpu-definitions reply was missing return data"));
-        goto cleanup;
-    }
-
-    if ((n = virJSONValueArraySize(data)) < 0) {
+    if (!(data = virJSONValueObjectGetArray(reply, "return")) ||
+        (n = virJSONValueArraySize(data)) < 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                        _("query-cpu-definitions reply data was not an array"));
         goto cleanup;
@@ -4998,13 +4953,8 @@ int qemuMonitorJSONGetCommands(qemuMonitorPtr mon,
     if (qemuMonitorJSONCheckError(cmd, reply) < 0)
         goto cleanup;
 
-    if (!(data = virJSONValueObjectGetArray(reply, "return"))) {
-        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                       _("query-commands reply was missing return data"));
-        goto cleanup;
-    }
-
-    if ((n = virJSONValueArraySize(data)) < 0) {
+    if (!(data = virJSONValueObjectGetArray(reply, "return")) ||
+        (n = virJSONValueArraySize(data)) < 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                        _("query-commands reply data was not an array"));
         goto cleanup;
@@ -5068,13 +5018,8 @@ int qemuMonitorJSONGetEvents(qemuMonitorPtr mon,
     if (qemuMonitorJSONCheckError(cmd, reply) < 0)
         goto cleanup;
 
-    if (!(data = virJSONValueObjectGetArray(reply, "return"))) {
-        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                       _("query-events reply was missing return data"));
-        goto cleanup;
-    }
-
-    if ((n = virJSONValueArraySize(data)) < 0) {
+    if (!(data = virJSONValueObjectGetArray(reply, "return")) ||
+        (n = virJSONValueArraySize(data)) < 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                        _("query-events reply data was not an array"));
         goto cleanup;
@@ -5258,11 +5203,7 @@ int qemuMonitorJSONGetKVMState(qemuMonitorPtr mon,
     if (qemuMonitorJSONCheckError(cmd, reply) < 0)
         goto cleanup;
 
-    if (!(data = virJSONValueObjectGetObject(reply, "return"))) {
-        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                       _("query-kvm reply was missing return data"));
-        goto cleanup;
-    }
+    data = virJSONValueObjectGetObject(reply, "return");
 
     if (virJSONValueObjectGetBoolean(data, "enabled", enabled) < 0 ||
         virJSONValueObjectGetBoolean(data, "present", present) < 0) {
@@ -5302,13 +5243,8 @@ int qemuMonitorJSONGetObjectTypes(qemuMonitorPtr mon,
     if (qemuMonitorJSONCheckError(cmd, reply) < 0)
         goto cleanup;
 
-    if (!(data = virJSONValueObjectGetArray(reply, "return"))) {
-        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                       _("qom-list-types reply was missing return data"));
-        goto cleanup;
-    }
-
-    if ((n = virJSONValueArraySize(data)) < 0) {
+    if (!(data = virJSONValueObjectGetArray(reply, "return")) ||
+        (n = virJSONValueArraySize(data)) < 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                        _("qom-list-types reply data was not an array"));
         goto cleanup;
@@ -5369,13 +5305,8 @@ int qemuMonitorJSONGetObjectListPaths(qemuMonitorPtr mon,
     if (qemuMonitorJSONCheckError(cmd, reply) < 0)
         goto cleanup;
 
-    if (!(data = virJSONValueObjectGetArray(reply, "return"))) {
-        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                       _("qom-list reply was missing return data"));
-        goto cleanup;
-    }
-
-    if ((n = virJSONValueArraySize(data)) < 0) {
+    if (!(data = virJSONValueObjectGetArray(reply, "return")) ||
+        (n = virJSONValueArraySize(data)) < 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                        _("qom-list reply data was not an array"));
         goto cleanup;
@@ -5613,13 +5544,8 @@ int qemuMonitorJSONGetObjectProps(qemuMonitorPtr mon,
     if (qemuMonitorJSONCheckError(cmd, reply) < 0)
         goto cleanup;
 
-    if (!(data = virJSONValueObjectGetArray(reply, "return"))) {
-        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                       _("device-list-properties reply was missing return data"));
-        goto cleanup;
-    }
-
-    if ((n = virJSONValueArraySize(data)) < 0) {
+    if (!(data = virJSONValueObjectGetArray(reply, "return")) ||
+        (n = virJSONValueArraySize(data)) < 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                        _("device-list-properties reply data was not an array"));
         goto cleanup;
@@ -5673,11 +5599,7 @@ qemuMonitorJSONGetTargetArch(qemuMonitorPtr mon)
     if (qemuMonitorJSONCheckError(cmd, reply) < 0)
         goto cleanup;
 
-    if (!(data = virJSONValueObjectGetObject(reply, "return"))) {
-        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                       _("query-target reply was missing return data"));
-        goto cleanup;
-    }
+    data = virJSONValueObjectGetObject(reply, "return");
 
     if (!(arch = virJSONValueObjectGetString(data, "arch"))) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
@@ -6110,14 +6032,8 @@ qemuMonitorJSONGetStringArray(qemuMonitorPtr mon, const char *qmpCmd,
     if (qemuMonitorJSONCheckError(cmd, reply) < 0)
         goto cleanup;
 
-    if (!(data = virJSONValueObjectGetArray(reply, "return"))) {
-        virReportError(VIR_ERR_INTERNAL_ERROR,
-                       _("%s reply was missing return data"),
-                       qmpCmd);
-        goto cleanup;
-    }
-
-    if ((n = virJSONValueArraySize(data)) < 0) {
+    if (!(data = virJSONValueObjectGetArray(reply, "return")) ||
+        (n = virJSONValueArraySize(data)) < 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR,
                        _("%s reply data was not an array"),
                        qmpCmd);
@@ -6329,15 +6245,9 @@ qemuMonitorJSONAttachCharDev(qemuMonitorPtr mon,
         goto cleanup;
 
     if (chr->type == VIR_DOMAIN_CHR_TYPE_PTY) {
-        virJSONValuePtr data;
+        virJSONValuePtr data = virJSONValueObjectGetObject(reply, "return");
         const char *path;
 
-        if (!(data = virJSONValueObjectGetObject(reply, "return"))) {
-            virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                           _("chardev-add reply was missing return data"));
-            goto cleanup;
-        }
-
         if (!(path = virJSONValueObjectGetString(data, "pty"))) {
             virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                            _("chardev-add reply was missing pty path"));
@@ -6686,13 +6596,8 @@ qemuMonitorJSONGetIOThreads(qemuMonitorPtr mon,
     if (qemuMonitorJSONCheckError(cmd, reply) < 0)
         goto cleanup;
 
-    if (!(data = virJSONValueObjectGetArray(reply, "return"))) {
-        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                       _("query-iothreads reply was missing return data"));
-        goto cleanup;
-    }
-
-    if ((n = virJSONValueArraySize(data)) < 0) {
+    if (!(data = virJSONValueObjectGetArray(reply, "return")) ||
+        (n = virJSONValueArraySize(data)) < 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                        _("query-iothreads reply data was not an array"));
         goto cleanup;
@@ -6780,13 +6685,8 @@ qemuMonitorJSONGetMemoryDeviceInfo(qemuMonitorPtr mon,
     if (qemuMonitorJSONCheckError(cmd, reply) < 0)
         goto cleanup;
 
-    if (!(data = virJSONValueObjectGetArray(reply, "return"))) {
-        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                       _("query-memory-devices reply was missing return data"));
-        goto cleanup;
-    }
-
-    if ((n = virJSONValueArraySize(data)) < 0) {
+    if (!(data = virJSONValueObjectGetArray(reply, "return")) ||
+        (n = virJSONValueArraySize(data)) < 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                        _("query-memory-devices reply data was not an array"));
         goto cleanup;