/* * 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); } }