block: fix documentation of block_job_cancel_sync
[qemu/ar7.git] / error.c
blob1f05fc466e7458bbcee2c715871449c56a5be213
1 /*
2 * QEMU Error Objects
4 * Copyright IBM, Corp. 2011
6 * Authors:
7 * Anthony Liguori <aliguori@us.ibm.com>
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.
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"
20 struct Error
22 char *msg;
23 ErrorClass err_class;
26 void error_set(Error **errp, ErrorClass err_class, const char *fmt, ...)
28 Error *err;
29 va_list ap;
31 if (errp == NULL) {
32 return;
34 assert(*errp == NULL);
36 err = g_malloc0(sizeof(*err));
38 va_start(ap, fmt);
39 err->msg = g_strdup_vprintf(fmt, ap);
40 va_end(ap);
41 err->err_class = err_class;
43 *errp = err;
46 Error *error_copy(const Error *err)
48 Error *err_new;
50 err_new = g_malloc0(sizeof(*err));
51 err_new->msg = g_strdup(err->msg);
52 err_new->err_class = err->err_class;
54 return err_new;
57 bool error_is_set(Error **errp)
59 return (errp && *errp);
62 ErrorClass error_get_class(const Error *err)
64 return err->err_class;
67 const char *error_get_pretty(Error *err)
69 return err->msg;
72 void error_free(Error *err)
74 if (err) {
75 g_free(err->msg);
76 g_free(err);
80 void error_propagate(Error **dst_err, Error *local_err)
82 if (dst_err && !*dst_err) {
83 *dst_err = local_err;
84 } else if (local_err) {
85 error_free(local_err);