]>
Commit | Line | Data |
---|---|---|
d5ec4f27 LC |
1 | /* |
2 | * QEMU Error Objects | |
3 | * | |
4 | * Copyright IBM, Corp. 2011 | |
5 | * | |
6 | * Authors: | |
7 | * Anthony Liguori <aliguori@us.ibm.com> | |
8 | * | |
9 | * This work is licensed under the terms of the GNU LGPL, version 2. See | |
10 | * the COPYING.LIB file in the top-level directory. | |
11 | */ | |
e4ea5e2d SW |
12 | |
13 | #include "qemu-common.h" | |
d5ec4f27 | 14 | #include "error.h" |
f795e743 LC |
15 | #include "qjson.h" |
16 | #include "qdict.h" | |
d5ec4f27 | 17 | #include "error_int.h" |
d5ec4f27 | 18 | #include "qerror.h" |
d5ec4f27 LC |
19 | |
20 | struct Error | |
21 | { | |
22 | QDict *obj; | |
d5ec4f27 LC |
23 | char *msg; |
24 | }; | |
25 | ||
26 | void error_set(Error **errp, const char *fmt, ...) | |
27 | { | |
28 | Error *err; | |
29 | va_list ap; | |
30 | ||
31 | if (errp == NULL) { | |
32 | return; | |
33 | } | |
d195325b | 34 | assert(*errp == NULL); |
d5ec4f27 | 35 | |
7267c094 | 36 | err = g_malloc0(sizeof(*err)); |
d5ec4f27 LC |
37 | |
38 | va_start(ap, fmt); | |
39 | err->obj = qobject_to_qdict(qobject_from_jsonv(fmt, &ap)); | |
40 | va_end(ap); | |
dd7520f0 | 41 | err->msg = qerror_format(fmt, err->obj); |
d5ec4f27 LC |
42 | |
43 | *errp = err; | |
44 | } | |
45 | ||
79020cfc LC |
46 | Error *error_copy(const Error *err) |
47 | { | |
48 | Error *err_new; | |
49 | ||
50 | err_new = g_malloc0(sizeof(*err)); | |
51 | err_new->msg = g_strdup(err->msg); | |
79020cfc LC |
52 | err_new->obj = err->obj; |
53 | QINCREF(err_new->obj); | |
54 | ||
55 | return err_new; | |
56 | } | |
57 | ||
d5ec4f27 LC |
58 | bool error_is_set(Error **errp) |
59 | { | |
60 | return (errp && *errp); | |
61 | } | |
62 | ||
63 | const char *error_get_pretty(Error *err) | |
64 | { | |
d5ec4f27 LC |
65 | return err->msg; |
66 | } | |
67 | ||
68 | const char *error_get_field(Error *err, const char *field) | |
69 | { | |
70 | if (strcmp(field, "class") == 0) { | |
71 | return qdict_get_str(err->obj, field); | |
72 | } else { | |
73 | QDict *dict = qdict_get_qdict(err->obj, "data"); | |
74 | return qdict_get_str(dict, field); | |
75 | } | |
76 | } | |
77 | ||
78 | QDict *error_get_data(Error *err) | |
79 | { | |
80 | QDict *data = qdict_get_qdict(err->obj, "data"); | |
81 | QINCREF(data); | |
82 | return data; | |
83 | } | |
84 | ||
85 | void error_set_field(Error *err, const char *field, const char *value) | |
86 | { | |
87 | QDict *dict = qdict_get_qdict(err->obj, "data"); | |
0ed6dc1a | 88 | qdict_put(dict, field, qstring_from_str(value)); |
d5ec4f27 LC |
89 | } |
90 | ||
91 | void error_free(Error *err) | |
92 | { | |
93 | if (err) { | |
94 | QDECREF(err->obj); | |
7267c094 AL |
95 | g_free(err->msg); |
96 | g_free(err); | |
d5ec4f27 LC |
97 | } |
98 | } | |
99 | ||
100 | bool error_is_type(Error *err, const char *fmt) | |
101 | { | |
102 | const char *error_class; | |
103 | char *ptr; | |
104 | char *end; | |
105 | ||
acceb4d9 AL |
106 | if (!err) { |
107 | return false; | |
108 | } | |
109 | ||
d5ec4f27 LC |
110 | ptr = strstr(fmt, "'class': '"); |
111 | assert(ptr != NULL); | |
112 | ptr += strlen("'class': '"); | |
113 | ||
114 | end = strchr(ptr, '\''); | |
115 | assert(end != NULL); | |
116 | ||
117 | error_class = error_get_field(err, "class"); | |
118 | if (strlen(error_class) != end - ptr) { | |
119 | return false; | |
120 | } | |
121 | ||
122 | return strncmp(ptr, error_class, end - ptr) == 0; | |
123 | } | |
124 | ||
125 | void error_propagate(Error **dst_err, Error *local_err) | |
126 | { | |
d195325b | 127 | if (dst_err && !*dst_err) { |
d5ec4f27 LC |
128 | *dst_err = local_err; |
129 | } else if (local_err) { | |
130 | error_free(local_err); | |
131 | } | |
132 | } | |
133 | ||
134 | QObject *error_get_qobject(Error *err) | |
135 | { | |
136 | QINCREF(err->obj); | |
137 | return QOBJECT(err->obj); | |
138 | } | |
139 | ||
140 | void error_set_qobject(Error **errp, QObject *obj) | |
141 | { | |
142 | Error *err; | |
143 | if (errp == NULL) { | |
144 | return; | |
145 | } | |
7267c094 | 146 | err = g_malloc0(sizeof(*err)); |
d5ec4f27 LC |
147 | err->obj = qobject_to_qdict(obj); |
148 | qobject_incref(obj); | |
149 | ||
150 | *errp = err; | |
151 | } |