[PATCH 02/12] qemuMonitorSetMigrationCapabilities: Take double pointer for @caps

[Peter Krempa]

This allows simplification of the callers.

Signed-off-by: Peter Krempa <pkrempa at redhat.com>
---
 src/qemu/qemu_migration_params.c | 13 ++++---------
 src/qemu/qemu_monitor.c          | 11 +++--------
 src/qemu/qemu_monitor.h          |  2 +-
 src/qemu/qemu_monitor_json.c     |  5 ++---
 src/qemu/qemu_monitor_json.h     |  2 +-
 tests/qemumonitorjsontest.c      |  3 +--
 6 files changed, 12 insertions(+), 24 deletions(-)

diff --git a/src/qemu/qemu_migration_params.c b/src/qemu/qemu_migration_params.c
index d1d59aeb01..8c019bf2ce 100644
--- a/src/qemu/qemu_migration_params.c
+++ b/src/qemu/qemu_migration_params.c
@@ -803,7 +803,6 @@ qemuMigrationParamsApply(virQEMUDriverPtr driver,
     g_autoptr(virJSONValue) caps = NULL;
     qemuMigrationParam xbzrle = QEMU_MIGRATION_PARAM_XBZRLE_CACHE_SIZE;
     int ret = -1;
-    int rc;

     if (qemuDomainObjEnterMonitorAsync(driver, vm, asyncJob) < 0)
         return -1;
@@ -819,12 +818,9 @@ qemuMigrationParamsApply(virQEMUDriverPtr driver,
         if (!(caps = qemuMigrationCapsToJSON(priv->migrationCaps, migParams->caps)))
             goto cleanup;

-        if (virJSONValueArraySize(caps) > 0) {
-            rc = qemuMonitorSetMigrationCapabilities(priv->mon, caps);
-            caps = NULL;
-            if (rc < 0)
-                goto cleanup;
-        }
+        if (virJSONValueArraySize(caps) > 0 &&
+            qemuMonitorSetMigrationCapabilities(priv->mon, &caps) < 0)
+            goto cleanup;
     }

     /* If QEMU is too old to support xbzrle-cache-size migration parameter,
@@ -1389,8 +1385,7 @@ qemuMigrationCapsCheck(virQEMUDriverPtr driver,
         if (qemuDomainObjEnterMonitorAsync(driver, vm, asyncJob) < 0)
             return -1;

-        rc = qemuMonitorSetMigrationCapabilities(priv->mon, json);
-        json = NULL;
+        rc = qemuMonitorSetMigrationCapabilities(priv->mon, &json);

         if (qemuDomainObjExitMonitor(driver, vm) < 0)
             return -1;
diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c
index a81cd5fff5..8b1f90b363 100644
--- a/src/qemu/qemu_monitor.c
+++ b/src/qemu/qemu_monitor.c
@@ -3877,22 +3877,17 @@ qemuMonitorGetMigrationCapabilities(qemuMonitorPtr mon,
  * @mon: Pointer to the monitor object.
  * @caps: Migration capabilities.
  *
- * The @caps object is consumed and should not be referenced by the caller
- * after this function returns.
+ * The @caps object is consumed cleared.
  *
  * Returns 0 on success, -1 on error.
  */
 int
 qemuMonitorSetMigrationCapabilities(qemuMonitorPtr mon,
-                                    virJSONValuePtr caps)
+                                    virJSONValuePtr *caps)
 {
-    QEMU_CHECK_MONITOR_GOTO(mon, error);
+    QEMU_CHECK_MONITOR(mon);

     return qemuMonitorJSONSetMigrationCapabilities(mon, caps);
-
- error:
-    virJSONValueFree(caps);
-    return -1;
 }


diff --git a/src/qemu/qemu_monitor.h b/src/qemu/qemu_monitor.h
index c543515cdc..a07617ec28 100644
--- a/src/qemu/qemu_monitor.h
+++ b/src/qemu/qemu_monitor.h
@@ -864,7 +864,7 @@ int qemuMonitorGetMigrationStats(qemuMonitorPtr mon,
 int qemuMonitorGetMigrationCapabilities(qemuMonitorPtr mon,
                                         char ***capabilities);
 int qemuMonitorSetMigrationCapabilities(qemuMonitorPtr mon,
-                                        virJSONValuePtr caps);
+                                        virJSONValuePtr *caps);

 int qemuMonitorGetGICCapabilities(qemuMonitorPtr mon,
                                   virGICCapability **capabilities);
diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c
index ad517a99b8..0660c37e1e 100644
--- a/src/qemu/qemu_monitor_json.c
+++ b/src/qemu/qemu_monitor_json.c
@@ -6972,14 +6972,14 @@ qemuMonitorJSONGetMigrationCapabilities(qemuMonitorPtr mon,

 int
 qemuMonitorJSONSetMigrationCapabilities(qemuMonitorPtr mon,
-                                        virJSONValuePtr caps)
+                                        virJSONValuePtr *caps)
 {
     int ret = -1;
     virJSONValuePtr cmd = NULL;
     virJSONValuePtr reply = NULL;

     cmd = qemuMonitorJSONMakeCommand("migrate-set-capabilities",
-                                     "a:capabilities", &caps,
+                                     "a:capabilities", caps,
                                      NULL);
     if (!cmd)
         goto cleanup;
@@ -6992,7 +6992,6 @@ qemuMonitorJSONSetMigrationCapabilities(qemuMonitorPtr mon,

     ret = 0;
  cleanup:
-    virJSONValueFree(caps);
     virJSONValueFree(cmd);
     virJSONValueFree(reply);
     return ret;
diff --git a/src/qemu/qemu_monitor_json.h b/src/qemu/qemu_monitor_json.h
index f3d7d204d6..4a5292a69c 100644
--- a/src/qemu/qemu_monitor_json.h
+++ b/src/qemu/qemu_monitor_json.h
@@ -149,7 +149,7 @@ int qemuMonitorJSONGetMigrationStats(qemuMonitorPtr mon,
 int qemuMonitorJSONGetMigrationCapabilities(qemuMonitorPtr mon,
                                             char ***capabilities);
 int qemuMonitorJSONSetMigrationCapabilities(qemuMonitorPtr mon,
-                                            virJSONValuePtr caps);
+                                            virJSONValuePtr *caps);

 int qemuMonitorJSONGetGICCapabilities(qemuMonitorPtr mon,
                                       virGICCapability **capabilities);
diff --git a/tests/qemumonitorjsontest.c b/tests/qemumonitorjsontest.c
index d0c37967d5..13794c2886 100644
--- a/tests/qemumonitorjsontest.c
+++ b/tests/qemumonitorjsontest.c
@@ -2092,8 +2092,7 @@ testQemuMonitorJSONqemuMonitorJSONGetMigrationCapabilities(const void *opaque)
         goto cleanup;

     ret = qemuMonitorJSONSetMigrationCapabilities(qemuMonitorTestGetMonitor(test),
-                                                  json);
-    json = NULL;
+                                                  &json);

  cleanup:
     virJSONValueFree(json);
-- 
2.29.2