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-rw-r--r--contrib/qemu/util/error.c120
1 files changed, 120 insertions, 0 deletions
diff --git a/contrib/qemu/util/error.c b/contrib/qemu/util/error.c
new file mode 100644
index 00000000..53b04354
--- /dev/null
+++ b/contrib/qemu/util/error.c
@@ -0,0 +1,120 @@
+/*
+ * 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;
+}
+
+void error_setg_file_open(Error **errp, int os_errno, const char *filename)
+{
+ error_setg_errno(errp, os_errno, "Could not open '%s'", filename);
+}
+
+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);
+ }
+}