summaryrefslogtreecommitdiffstats
path: root/qemu/util/error.c
diff options
context:
space:
mode:
authorYang Zhang <yang.z.zhang@intel.com>2015-08-28 09:58:54 +0800
committerYang Zhang <yang.z.zhang@intel.com>2015-09-01 12:44:00 +0800
commite44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch)
tree66b09f592c55df2878107a468a91d21506104d3f /qemu/util/error.c
parent9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff)
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/util/error.c')
-rw-r--r--qemu/util/error.c179
1 files changed, 179 insertions, 0 deletions
diff --git a/qemu/util/error.c b/qemu/util/error.c
new file mode 100644
index 000000000..14f435187
--- /dev/null
+++ b/qemu/util/error.c
@@ -0,0 +1,179 @@
+/*
+ * 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 "qemu/error-report.h"
+
+struct Error
+{
+ char *msg;
+ ErrorClass err_class;
+};
+
+Error *error_abort;
+
+void error_set(Error **errp, ErrorClass err_class, const char *fmt, ...)
+{
+ Error *err;
+ va_list ap;
+ int saved_errno = errno;
+
+ 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;
+
+ if (errp == &error_abort) {
+ error_report_err(err);
+ abort();
+ }
+
+ *errp = err;
+
+ errno = saved_errno;
+}
+
+void error_set_errno(Error **errp, int os_errno, ErrorClass err_class,
+ const char *fmt, ...)
+{
+ Error *err;
+ char *msg1;
+ va_list ap;
+ int saved_errno = errno;
+
+ 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;
+
+ if (errp == &error_abort) {
+ error_report_err(err);
+ abort();
+ }
+
+ *errp = err;
+
+ errno = saved_errno;
+}
+
+void error_setg_file_open(Error **errp, int os_errno, const char *filename)
+{
+ error_setg_errno(errp, os_errno, "Could not open '%s'", filename);
+}
+
+#ifdef _WIN32
+
+void error_set_win32(Error **errp, int win32_err, 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 (win32_err != 0) {
+ char *msg2 = g_win32_error_message(win32_err);
+ err->msg = g_strdup_printf("%s: %s (error: %x)", msg1, msg2,
+ (unsigned)win32_err);
+ g_free(msg2);
+ g_free(msg1);
+ } else {
+ err->msg = msg1;
+ }
+ va_end(ap);
+ err->err_class = err_class;
+
+ if (errp == &error_abort) {
+ error_report_err(err);
+ abort();
+ }
+
+ *errp = err;
+}
+
+#endif
+
+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;
+}
+
+ErrorClass error_get_class(const Error *err)
+{
+ return err->err_class;
+}
+
+const char *error_get_pretty(Error *err)
+{
+ return err->msg;
+}
+
+void error_report_err(Error *err)
+{
+ error_report("%s", error_get_pretty(err));
+ error_free(err);
+}
+
+void error_free(Error *err)
+{
+ if (err) {
+ g_free(err->msg);
+ g_free(err);
+ }
+}
+
+void error_propagate(Error **dst_errp, Error *local_err)
+{
+ if (local_err && dst_errp == &error_abort) {
+ error_report_err(local_err);
+ abort();
+ } else if (dst_errp && !*dst_errp) {
+ *dst_errp = local_err;
+ } else if (local_err) {
+ error_free(local_err);
+ }
+}