mirror of
https://gitlab.com/qemu-project/qemu
synced 2024-11-05 20:35:44 +00:00
680d16dcb7
These functions help maintaining homogeneous formatting of error messages that include strerror values. Acked-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
115 lines
2 KiB
C
115 lines
2 KiB
C
/*
|
|
* 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 "error.h"
|
|
#include "qjson.h"
|
|
#include "qdict.h"
|
|
#include "qapi-types.h"
|
|
#include "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);
|
|
}
|
|
}
|