2011-06-01 21:14:49 +04:00
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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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2011-06-14 01:01:53 +04:00
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#include "qemu-common.h"
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2012-12-17 21:19:43 +04:00
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#include "qapi/error.h"
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2014-03-22 03:42:28 +04:00
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#include "qemu/error-report.h"
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2011-06-01 21:14:49 +04:00
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struct Error
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{
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char *msg;
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2012-07-27 21:09:29 +04:00
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ErrorClass err_class;
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2011-06-01 21:14:49 +04:00
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};
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2014-01-02 06:46:59 +04:00
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Error *error_abort;
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2012-07-27 21:09:29 +04:00
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void error_set(Error **errp, ErrorClass err_class, const char *fmt, ...)
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2011-06-01 21:14:49 +04:00
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{
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Error *err;
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va_list ap;
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2013-11-07 23:10:29 +04:00
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int saved_errno = errno;
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2011-06-01 21:14:49 +04:00
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if (errp == NULL) {
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return;
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}
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2012-07-17 18:17:04 +04:00
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assert(*errp == NULL);
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2011-06-01 21:14:49 +04:00
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2011-08-21 07:09:37 +04:00
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err = g_malloc0(sizeof(*err));
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2011-06-01 21:14:49 +04:00
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va_start(ap, fmt);
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2012-07-28 00:51:03 +04:00
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err->msg = g_strdup_vprintf(fmt, ap);
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2011-06-01 21:14:49 +04:00
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va_end(ap);
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2012-07-27 21:09:29 +04:00
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err->err_class = err_class;
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2011-06-01 21:14:49 +04:00
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2014-01-02 06:46:59 +04:00
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if (errp == &error_abort) {
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2015-02-12 15:55:05 +03:00
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error_report_err(err);
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2014-01-02 06:46:59 +04:00
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abort();
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}
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2011-06-01 21:14:49 +04:00
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*errp = err;
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2013-11-07 23:10:29 +04:00
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errno = saved_errno;
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2011-06-01 21:14:49 +04:00
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}
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2012-10-02 11:00:45 +04:00
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void error_set_errno(Error **errp, int os_errno, ErrorClass err_class,
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const char *fmt, ...)
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{
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Error *err;
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char *msg1;
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va_list ap;
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2013-11-07 23:10:29 +04:00
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int saved_errno = errno;
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2012-10-02 11:00:45 +04:00
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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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msg1 = g_strdup_vprintf(fmt, ap);
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if (os_errno != 0) {
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err->msg = g_strdup_printf("%s: %s", msg1, strerror(os_errno));
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g_free(msg1);
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} else {
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err->msg = msg1;
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}
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va_end(ap);
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err->err_class = err_class;
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2014-01-02 06:46:59 +04:00
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if (errp == &error_abort) {
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2015-02-12 15:55:05 +03:00
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error_report_err(err);
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2014-01-02 06:46:59 +04:00
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abort();
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}
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2012-10-02 11:00:45 +04:00
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*errp = err;
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2013-11-07 23:10:29 +04:00
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errno = saved_errno;
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2012-10-02 11:00:45 +04:00
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}
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2013-06-07 22:24:49 +04:00
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void error_setg_file_open(Error **errp, int os_errno, const char *filename)
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{
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error_setg_errno(errp, os_errno, "Could not open '%s'", filename);
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}
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2013-08-07 19:40:11 +04:00
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#ifdef _WIN32
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void error_set_win32(Error **errp, int win32_err, ErrorClass err_class,
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const char *fmt, ...)
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{
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Error *err;
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char *msg1;
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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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msg1 = g_strdup_vprintf(fmt, ap);
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if (win32_err != 0) {
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char *msg2 = g_win32_error_message(win32_err);
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err->msg = g_strdup_printf("%s: %s (error: %x)", msg1, msg2,
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(unsigned)win32_err);
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g_free(msg2);
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g_free(msg1);
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} else {
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err->msg = msg1;
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}
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va_end(ap);
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err->err_class = err_class;
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2014-01-02 06:46:59 +04:00
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if (errp == &error_abort) {
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2015-02-12 15:55:05 +03:00
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error_report_err(err);
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2014-01-02 06:46:59 +04:00
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abort();
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}
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2013-08-07 19:40:11 +04:00
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*errp = err;
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}
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#endif
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2011-12-05 22:04:05 +04:00
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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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2012-07-27 21:09:29 +04:00
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err_new->err_class = err->err_class;
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2011-12-05 22:04:05 +04:00
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return err_new;
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}
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2012-08-01 23:29:38 +04:00
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ErrorClass error_get_class(const Error *err)
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{
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return err->err_class;
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}
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2011-06-01 21:14:49 +04:00
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const char *error_get_pretty(Error *err)
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{
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return err->msg;
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}
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2015-02-06 17:27:19 +03:00
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void error_report_err(Error *err)
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{
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error_report("%s", error_get_pretty(err));
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error_free(err);
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}
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2011-06-01 21:14:49 +04:00
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void error_free(Error *err)
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{
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if (err) {
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2011-08-21 07:09:37 +04:00
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g_free(err->msg);
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g_free(err);
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2011-06-01 21:14:49 +04:00
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}
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}
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2014-05-02 15:26:32 +04:00
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void error_propagate(Error **dst_errp, Error *local_err)
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2011-06-01 21:14:49 +04:00
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{
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2014-05-02 15:26:32 +04:00
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if (local_err && dst_errp == &error_abort) {
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2015-02-12 15:55:05 +03:00
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error_report_err(local_err);
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2014-01-02 06:46:59 +04:00
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abort();
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2014-05-02 15:26:32 +04:00
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} else if (dst_errp && !*dst_errp) {
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*dst_errp = local_err;
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2011-06-01 21:14:49 +04:00
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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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