qemu: Add support for setting string migration params

The functions for converting migration typed parameters to QEMU
migration parameters and back were only implemented for integer types.
This patch adds support for string parameters.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NPavel Hrdina <phrdina@redhat.com>

src/qemu/qemu_migration_params.c

@@ -412,6 +412,51 @@ qemuMigrationParamsSetTPULL(qemuMigrationParamsPtr migParams,
 }
 
 
+static int
+qemuMigrationParamsGetTPString(qemuMigrationParamsPtr migParams,
+                               qemuMigrationParam param,
+                               virTypedParameterPtr params,
+                               int nparams,
+                               const char *name)
+{
+    const char *value = NULL;
+    int rc;
+
+    if (qemuMigrationParamsCheckType(param, QEMU_MIGRATION_PARAM_TYPE_STRING) < 0)
+        return -1;
+
+    if (!params)
+        return 0;
+
+    if ((rc = virTypedParamsGetString(params, nparams, name, &value)) < 0)
+        return -1;
+
+    migParams->params[param].value.s = g_strdup(value);
+    migParams->params[param].set = !!rc;
+    return 0;
+}
+
+
+static int
+qemuMigrationParamsSetTPString(qemuMigrationParamsPtr migParams,
+                               qemuMigrationParam param,
+                               virTypedParameterPtr *params,
+                               int *nparams,
+                               int *maxparams,
+                               const char *name)
+{
+    if (qemuMigrationParamsCheckType(param, QEMU_MIGRATION_PARAM_TYPE_STRING) < 0)
+        return -1;
+
+    if (!migParams->params[param].set)
+        return 0;
+
+    return virTypedParamsAddString(params, nparams, maxparams, name,
+                                   migParams->params[param].value.s);
+}
+
+
+
 static int
 qemuMigrationParamsSetCompression(virTypedParameterPtr params,
                                   int nparams,
@@ -536,7 +581,12 @@ qemuMigrationParamsFromFlags(virTypedParameterPtr params,
             break;
 
         case QEMU_MIGRATION_PARAM_TYPE_BOOL:
+            break;
+
         case QEMU_MIGRATION_PARAM_TYPE_STRING:
+            if (qemuMigrationParamsGetTPString(migParams, item->param, params,
+                                               nparams, item->typedParam) < 0)
+                goto error;
             break;
         }
     }
@@ -612,7 +662,13 @@ qemuMigrationParamsDump(qemuMigrationParamsPtr migParams,
             break;
 
         case QEMU_MIGRATION_PARAM_TYPE_BOOL:
+            break;
+
         case QEMU_MIGRATION_PARAM_TYPE_STRING:
+            if (qemuMigrationParamsSetTPString(migParams, item->param,
+                                               params, nparams, maxparams,
+                                               item->typedParam) < 0)
+                return -1;
             break;
         }
     }