1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/*
* QEMU Error Objects
*
* Copyright IBM, Corp. 2011
*
* Authors:
* Anthony Liguori <aliguori@us.ibm.com>
*
* This work is licensed under the terms of the GNU LGPL, version 2. See
* the COPYING.LIB file in the top-level directory.
*/
#include "qemu-common.h"
#include "error.h"
#include "error_int.h"
#include "qemu-objects.h"
#include "qerror.h"
struct Error
{
QDict *obj;
const char *fmt;
char *msg;
};
void error_set(Error **errp, const char *fmt, ...)
{
Error *err;
va_list ap;
if (errp == NULL) {
return;
}
err = g_malloc0(sizeof(*err));
va_start(ap, fmt);
err->obj = qobject_to_qdict(qobject_from_jsonv(fmt, &ap));
va_end(ap);
err->fmt = fmt;
*errp = err;
}
bool error_is_set(Error **errp)
{
return (errp && *errp);
}
const char *error_get_pretty(Error *err)
{
if (err->msg == NULL) {
QString *str;
str = qerror_format(err->fmt, err->obj);
err->msg = g_strdup(qstring_get_str(str));
QDECREF(str);
}
return err->msg;
}
const char *error_get_field(Error *err, const char *field)
{
if (strcmp(field, "class") == 0) {
return qdict_get_str(err->obj, field);
} else {
QDict *dict = qdict_get_qdict(err->obj, "data");
return qdict_get_str(dict, field);
}
}
QDict *error_get_data(Error *err)
{
QDict *data = qdict_get_qdict(err->obj, "data");
QINCREF(data);
return data;
}
void error_set_field(Error *err, const char *field, const char *value)
{
QDict *dict = qdict_get_qdict(err->obj, "data");
return qdict_put(dict, field, qstring_from_str(value));
}
void error_free(Error *err)
{
if (err) {
QDECREF(err->obj);
g_free(err->msg);
g_free(err);
}
}
bool error_is_type(Error *err, const char *fmt)
{
const char *error_class;
char *ptr;
char *end;
ptr = strstr(fmt, "'class': '");
assert(ptr != NULL);
ptr += strlen("'class': '");
end = strchr(ptr, '\'');
assert(end != NULL);
error_class = error_get_field(err, "class");
if (strlen(error_class) != end - ptr) {
return false;
}
return strncmp(ptr, error_class, end - ptr) == 0;
}
void error_propagate(Error **dst_err, Error *local_err)
{
if (dst_err) {
*dst_err = local_err;
} else if (local_err) {
error_free(local_err);
}
}
QObject *error_get_qobject(Error *err)
{
QINCREF(err->obj);
return QOBJECT(err->obj);
}
void error_set_qobject(Error **errp, QObject *obj)
{
Error *err;
if (errp == NULL) {
return;
}
err = g_malloc0(sizeof(*err));
err->obj = qobject_to_qdict(obj);
qobject_incref(obj);
*errp = err;
}
|
