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/*
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* QEMU Error Objects
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*
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* Copyright IBM, Corp. 2011
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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*
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* This work is licensed under the terms of the GNU LGPL, version 2. See
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* the COPYING.LIB file in the top-level directory.
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*/
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#include "qemu-common.h" |
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#include "error.h" |
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#include "qjson.h" |
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#include "qdict.h" |
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#include "error_int.h" |
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#include "qerror.h" |
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struct Error
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{ |
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QDict *obj; |
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const char *fmt; |
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char *msg;
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}; |
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void error_set(Error **errp, const char *fmt, ...) |
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{ |
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Error *err; |
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va_list ap; |
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if (errp == NULL) { |
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return;
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} |
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assert(*errp == NULL);
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err = g_malloc0(sizeof(*err));
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va_start(ap, fmt); |
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err->obj = qobject_to_qdict(qobject_from_jsonv(fmt, &ap)); |
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va_end(ap); |
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err->fmt = fmt; |
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*errp = err; |
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} |
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Error *error_copy(const Error *err)
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{ |
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Error *err_new; |
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err_new = g_malloc0(sizeof(*err));
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err_new->msg = g_strdup(err->msg); |
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err_new->fmt = err->fmt; |
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err_new->obj = err->obj; |
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QINCREF(err_new->obj); |
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return err_new;
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} |
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bool error_is_set(Error **errp)
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{ |
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return (errp && *errp);
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} |
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const char *error_get_pretty(Error *err) |
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{ |
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if (err->msg == NULL) { |
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QString *str; |
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str = qerror_format(err->fmt, err->obj); |
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err->msg = g_strdup(qstring_get_str(str)); |
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QDECREF(str); |
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} |
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return err->msg;
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} |
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const char *error_get_field(Error *err, const char *field) |
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{ |
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if (strcmp(field, "class") == 0) { |
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return qdict_get_str(err->obj, field);
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} else {
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QDict *dict = qdict_get_qdict(err->obj, "data");
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return qdict_get_str(dict, field);
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} |
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} |
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QDict *error_get_data(Error *err) |
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{ |
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QDict *data = qdict_get_qdict(err->obj, "data");
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QINCREF(data); |
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return data;
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} |
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void error_set_field(Error *err, const char *field, const char *value) |
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{ |
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QDict *dict = qdict_get_qdict(err->obj, "data");
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qdict_put(dict, field, qstring_from_str(value)); |
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} |
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void error_free(Error *err)
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{ |
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if (err) {
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QDECREF(err->obj); |
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g_free(err->msg); |
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g_free(err); |
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} |
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} |
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bool error_is_type(Error *err, const char *fmt) |
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{ |
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const char *error_class; |
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char *ptr;
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char *end;
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if (!err) {
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return false; |
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} |
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ptr = strstr(fmt, "'class': '");
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assert(ptr != NULL);
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ptr += strlen("'class': '");
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end = strchr(ptr, '\'');
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assert(end != NULL);
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error_class = error_get_field(err, "class");
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if (strlen(error_class) != end - ptr) {
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return false; |
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} |
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return strncmp(ptr, error_class, end - ptr) == 0; |
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} |
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void error_propagate(Error **dst_err, Error *local_err)
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{ |
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if (dst_err && !*dst_err) {
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*dst_err = local_err; |
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} else if (local_err) { |
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error_free(local_err); |
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} |
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} |
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QObject *error_get_qobject(Error *err) |
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{ |
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QINCREF(err->obj); |
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return QOBJECT(err->obj);
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} |
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void error_set_qobject(Error **errp, QObject *obj)
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{ |
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Error *err; |
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if (errp == NULL) { |
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return;
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} |
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err = g_malloc0(sizeof(*err));
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err->obj = qobject_to_qdict(obj); |
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qobject_incref(obj); |
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*errp = err; |
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} |