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9f9daf9a 1/*
41836a9f 2 * QError Module
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3 *
4 * Copyright (C) 2009 Red Hat Inc.
5 *
6 * Authors:
7 * Luiz Capitulino <lcapitulino@redhat.com>
8 *
9 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
10 * See the COPYING.LIB file in the top-level directory.
11 */
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12
13#include "monitor.h"
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14#include "qjson.h"
15#include "qerror.h"
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16#include "qemu-common.h"
17
18static void qerror_destroy_obj(QObject *obj);
19
20static const QType qerror_type = {
21 .code = QTYPE_QERROR,
22 .destroy = qerror_destroy_obj,
23};
24
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25/**
26 * qerror_new(): Create a new QError
27 *
28 * Return strong reference.
29 */
2a744405 30static QError *qerror_new(void)
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31{
32 QError *qerr;
33
7267c094 34 qerr = g_malloc0(sizeof(*qerr));
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35 QOBJECT_INIT(qerr, &qerror_type);
36
37 return qerr;
38}
39
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40/**
41 * qerror_from_info(): Create a new QError from error information
42 *
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43 * Return strong reference.
44 */
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45static QError *qerror_from_info(ErrorClass err_class, const char *fmt,
46 va_list *va)
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47{
48 QError *qerr;
49
50 qerr = qerror_new();
827b0813 51 loc_save(&qerr->loc);
9f9daf9a 52
df1e608a 53 qerr->err_msg = g_strdup_vprintf(fmt, *va);
13f59ae8 54 qerr->err_class = err_class;
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55
56 return qerr;
57}
58
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59/**
60 * qerror_human(): Format QError data into human-readable string.
61 */
62QString *qerror_human(const QError *qerror)
63{
18da7c0f 64 return qstring_from_str(qerror->err_msg);
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65}
66
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67/**
68 * qerror_print(): Print QError data
69 *
70 * This function will print the member 'desc' of the specified QError object,
1ecda02b 71 * it uses error_report() for this, so that the output is routed to the right
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72 * place (ie. stderr or Monitor's device).
73 */
2a744405 74static void qerror_print(QError *qerror)
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75{
76 QString *qstring = qerror_human(qerror);
827b0813 77 loc_push_restore(&qerror->loc);
1ecda02b 78 error_report("%s", qstring_get_str(qstring));
827b0813 79 loc_pop(&qerror->loc);
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80 QDECREF(qstring);
81}
82
13f59ae8 83void qerror_report(ErrorClass eclass, const char *fmt, ...)
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84{
85 va_list va;
86 QError *qerror;
87
88 va_start(va, fmt);
13f59ae8 89 qerror = qerror_from_info(eclass, fmt, &va);
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90 va_end(va);
91
92 if (monitor_cur_is_qmp()) {
93 monitor_set_error(cur_mon, qerror);
94 } else {
95 qerror_print(qerror);
96 QDECREF(qerror);
97 }
98}
99
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100/* Evil... */
101struct Error
102{
2a82d936 103 char *msg;
13f59ae8 104 ErrorClass err_class;
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105};
106
107void qerror_report_err(Error *err)
108{
109 QError *qerr;
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110
111 qerr = qerror_new();
112 loc_save(&qerr->loc);
dd7520f0 113 qerr->err_msg = g_strdup(err->msg);
13f59ae8 114 qerr->err_class = err->err_class;
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115
116 if (monitor_cur_is_qmp()) {
117 monitor_set_error(cur_mon, qerr);
118 } else {
119 qerror_print(qerr);
120 QDECREF(qerr);
121 }
122}
123
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124void assert_no_error(Error *err)
125{
126 if (err) {
127 qerror_report_err(err);
128 abort();
129 }
130}
131
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132/**
133 * qobject_to_qerror(): Convert a QObject into a QError
134 */
2a744405 135static QError *qobject_to_qerror(const QObject *obj)
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136{
137 if (qobject_type(obj) != QTYPE_QERROR) {
138 return NULL;
139 }
140
141 return container_of(obj, QError, base);
142}
143
144/**
145 * qerror_destroy_obj(): Free all memory allocated by a QError
146 */
147static void qerror_destroy_obj(QObject *obj)
148{
149 QError *qerr;
150
151 assert(obj != NULL);
152 qerr = qobject_to_qerror(obj);
153
18da7c0f 154 g_free(qerr->err_msg);
7267c094 155 g_free(qerr);
9f9daf9a 156}