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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
/*
* 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 "qapi/error.h"
#include "qemu/error-report.h"
struct Error
{
char *msg;
ErrorClass err_class;
};
Error *error_abort;
void error_set(Error **errp, ErrorClass err_class, const char *fmt, ...)
{
Error *err;
va_list ap;
int saved_errno = errno;
if (errp == NULL) {
return;
}
assert(*errp == NULL);
err = g_malloc0(sizeof(*err));
va_start(ap, fmt);
err->msg = g_strdup_vprintf(fmt, ap);
va_end(ap);
err->err_class = err_class;
if (errp == &error_abort) {
error_report("%s", error_get_pretty(err));
abort();
}
*errp = err;
errno = saved_errno;
}
void error_set_errno(Error **errp, int os_errno, ErrorClass err_class,
const char *fmt, ...)
{
Error *err;
char *msg1;
va_list ap;
int saved_errno = errno;
if (errp == NULL) {
return;
}
assert(*errp == NULL);
err = g_malloc0(sizeof(*err));
va_start(ap, fmt);
msg1 = g_strdup_vprintf(fmt, ap);
if (os_errno != 0) {
err->msg = g_strdup_printf("%s: %s", msg1, strerror(os_errno));
g_free(msg1);
} else {
err->msg = msg1;
}
va_end(ap);
err->err_class = err_class;
if (errp == &error_abort) {
error_report("%s", error_get_pretty(err));
abort();
}
*errp = err;
errno = saved_errno;
}
void error_setg_file_open(Error **errp, int os_errno, const char *filename)
{
error_setg_errno(errp, os_errno, "Could not open '%s'", filename);
}
#ifdef _WIN32
void error_set_win32(Error **errp, int win32_err, ErrorClass err_class,
const char *fmt, ...)
{
Error *err;
char *msg1;
va_list ap;
if (errp == NULL) {
return;
}
assert(*errp == NULL);
err = g_malloc0(sizeof(*err));
va_start(ap, fmt);
msg1 = g_strdup_vprintf(fmt, ap);
if (win32_err != 0) {
char *msg2 = g_win32_error_message(win32_err);
err->msg = g_strdup_printf("%s: %s (error: %x)", msg1, msg2,
(unsigned)win32_err);
g_free(msg2);
g_free(msg1);
} else {
err->msg = msg1;
}
va_end(ap);
err->err_class = err_class;
if (errp == &error_abort) {
error_report("%s", error_get_pretty(err));
abort();
}
*errp = err;
}
#endif
Error *error_copy(const Error *err)
{
Error *err_new;
err_new = g_malloc0(sizeof(*err));
err_new->msg = g_strdup(err->msg);
err_new->err_class = err->err_class;
return err_new;
}
ErrorClass error_get_class(const Error *err)
{
return err->err_class;
}
const char *error_get_pretty(Error *err)
{
return err->msg;
}
void error_free(Error *err)
{
if (err) {
g_free(err->msg);
g_free(err);
}
}
void error_propagate(Error **dst_errp, Error *local_err)
{
if (local_err && dst_errp == &error_abort) {
error_report("%s", error_get_pretty(local_err));
abort();
} else if (dst_errp && !*dst_errp) {
*dst_errp = local_err;
} else if (local_err) {
error_free(local_err);
}
}
|
