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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 | */ | |
12 | ||
13 | #include "qemu-common.h" | |
14 | #include "error.h" | |
15 | #include "qjson.h" | |
16 | #include "qdict.h" | |
17 | #include "qapi-types.h" | |
18 | #include "qerror.h" | |
19 | ||
20 | struct Error | |
21 | { | |
22 | char *msg; | |
23 | ErrorClass err_class; | |
24 | }; | |
25 | ||
26 | void error_set(Error **errp, ErrorClass err_class, const char *fmt, ...) | |
27 | { | |
28 | Error *err; | |
29 | va_list ap; | |
30 | ||
31 | if (errp == NULL) { | |
32 | return; | |
33 | } | |
34 | assert(*errp == NULL); | |
35 | ||
36 | err = g_malloc0(sizeof(*err)); | |
37 | ||
38 | va_start(ap, fmt); | |
39 | err->msg = g_strdup_vprintf(fmt, ap); | |
40 | va_end(ap); | |
41 | err->err_class = err_class; | |
42 | ||
43 | *errp = err; | |
44 | } | |
45 | ||
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); | |
52 | err_new->err_class = err->err_class; | |
53 | ||
54 | return err_new; | |
55 | } | |
56 | ||
57 | bool error_is_set(Error **errp) | |
58 | { | |
59 | return (errp && *errp); | |
60 | } | |
61 | ||
62 | ErrorClass error_get_class(const Error *err) | |
63 | { | |
64 | return err->err_class; | |
65 | } | |
66 | ||
67 | const char *error_get_pretty(Error *err) | |
68 | { | |
69 | return err->msg; | |
70 | } | |
71 | ||
72 | void error_free(Error *err) | |
73 | { | |
74 | if (err) { | |
75 | g_free(err->msg); | |
76 | g_free(err); | |
77 | } | |
78 | } | |
79 | ||
80 | void error_propagate(Error **dst_err, Error *local_err) | |
81 | { | |
82 | if (dst_err && !*dst_err) { | |
83 | *dst_err = local_err; | |
84 | } else if (local_err) { | |
85 | error_free(local_err); | |
86 | } | |
87 | } |