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/*
* 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);
}
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