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-rw-r--r--contrib/qemu/qobject/qerror.c156
1 files changed, 156 insertions, 0 deletions
diff --git a/contrib/qemu/qobject/qerror.c b/contrib/qemu/qobject/qerror.c
new file mode 100644
index 00000000000..3aee1cf6a69
--- /dev/null
+++ b/contrib/qemu/qobject/qerror.c
@@ -0,0 +1,156 @@
+/*
+ * QError Module
+ *
+ * Copyright (C) 2009 Red Hat Inc.
+ *
+ * Authors:
+ * Luiz Capitulino <lcapitulino@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
+ * See the COPYING.LIB file in the top-level directory.
+ */
+
+#include "monitor/monitor.h"
+#include "qapi/qmp/qjson.h"
+#include "qapi/qmp/qerror.h"
+#include "qemu-common.h"
+
+static void qerror_destroy_obj(QObject *obj);
+
+static const QType qerror_type = {
+ .code = QTYPE_QERROR,
+ .destroy = qerror_destroy_obj,
+};
+
+/**
+ * qerror_new(): Create a new QError
+ *
+ * Return strong reference.
+ */
+static QError *qerror_new(void)
+{
+ QError *qerr;
+
+ qerr = g_malloc0(sizeof(*qerr));
+ QOBJECT_INIT(qerr, &qerror_type);
+
+ return qerr;
+}
+
+/**
+ * qerror_from_info(): Create a new QError from error information
+ *
+ * Return strong reference.
+ */
+static QError *qerror_from_info(ErrorClass err_class, const char *fmt,
+ va_list *va)
+{
+ QError *qerr;
+
+ qerr = qerror_new();
+ loc_save(&qerr->loc);
+
+ qerr->err_msg = g_strdup_vprintf(fmt, *va);
+ qerr->err_class = err_class;
+
+ return qerr;
+}
+
+/**
+ * qerror_human(): Format QError data into human-readable string.
+ */
+QString *qerror_human(const QError *qerror)
+{
+ return qstring_from_str(qerror->err_msg);
+}
+
+/**
+ * qerror_print(): Print QError data
+ *
+ * This function will print the member 'desc' of the specified QError object,
+ * it uses error_report() for this, so that the output is routed to the right
+ * place (ie. stderr or Monitor's device).
+ */
+static void qerror_print(QError *qerror)
+{
+ QString *qstring = qerror_human(qerror);
+ loc_push_restore(&qerror->loc);
+ error_report("%s", qstring_get_str(qstring));
+ loc_pop(&qerror->loc);
+ QDECREF(qstring);
+}
+
+void qerror_report(ErrorClass eclass, const char *fmt, ...)
+{
+ va_list va;
+ QError *qerror;
+
+ va_start(va, fmt);
+ qerror = qerror_from_info(eclass, fmt, &va);
+ va_end(va);
+
+ if (monitor_cur_is_qmp()) {
+ monitor_set_error(cur_mon, qerror);
+ } else {
+ qerror_print(qerror);
+ QDECREF(qerror);
+ }
+}
+
+/* Evil... */
+struct Error
+{
+ char *msg;
+ ErrorClass err_class;
+};
+
+void qerror_report_err(Error *err)
+{
+ QError *qerr;
+
+ qerr = qerror_new();
+ loc_save(&qerr->loc);
+ qerr->err_msg = g_strdup(err->msg);
+ qerr->err_class = err->err_class;
+
+ if (monitor_cur_is_qmp()) {
+ monitor_set_error(cur_mon, qerr);
+ } else {
+ qerror_print(qerr);
+ QDECREF(qerr);
+ }
+}
+
+void assert_no_error(Error *err)
+{
+ if (err) {
+ qerror_report_err(err);
+ abort();
+ }
+}
+
+/**
+ * qobject_to_qerror(): Convert a QObject into a QError
+ */
+static QError *qobject_to_qerror(const QObject *obj)
+{
+ if (qobject_type(obj) != QTYPE_QERROR) {
+ return NULL;
+ }
+
+ return container_of(obj, QError, base);
+}
+
+/**
+ * qerror_destroy_obj(): Free all memory allocated by a QError
+ */
+static void qerror_destroy_obj(QObject *obj)
+{
+ QError *qerr;
+
+ assert(obj != NULL);
+ qerr = qobject_to_qerror(obj);
+
+ g_free(qerr->err_msg);
+ g_free(qerr);
+}