summaryrefslogtreecommitdiffstats
path: root/util/error.c
blob: 519f6b6ce00d777c261d761228e9874c8f3ac088 (plain)
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
/*
 * 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 "qapi/qmp/qjson.h"
#include "qapi/qmp/qdict.h"
#include "qapi-types.h"
#include "qapi/qmp/qerror.h"

struct Error
{
    char *msg;
    ErrorClass err_class;
};

void error_set(Error **errp, ErrorClass err_class, const char *fmt, ...)
{
    Error *err;
    va_list ap;

    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;

    *errp = err;
}

void error_set_errno(Error **errp, int os_errno, 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 (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;

    *errp = err;
}

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;
}

bool error_is_set(Error **errp)
{
    return (errp && *errp);
}

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_err, Error *local_err)
{
    if (dst_err && !*dst_err) {
        *dst_err = local_err;
    } else if (local_err) {
        error_free(local_err);
    }
}
OpenPOWER on IntegriCloud