From b57339b6f42dd1997d8aef3580dfb7411a56a99f Mon Sep 17 00:00:00 2001
From: George Dunlap <george.dunlap@xxxxxxxxxx>
Date: Thu, 29 Dec 2016 19:36:15 +0000
Subject: [PATCH 2/7] tools/golang: Add error constants and standard handling

You're going to change this so I won't bother writing a description -- write
here though a description of what the patch does and a brief account of why.
---
 tools/golang/xenlight/xenlight.go | 90 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 90 insertions(+)

diff --git a/tools/golang/xenlight/xenlight.go b/tools/golang/xenlight/xenlight.go
index b162abb..677e5a5 100644
--- a/tools/golang/xenlight/xenlight.go
+++ b/tools/golang/xenlight/xenlight.go
@@ -32,6 +32,96 @@ import (
 )
 
 /*
+ * Errors
+ */
+const (
+	ErrorNonspecific                  = int(C.ERROR_NONSPECIFIC)
+	ErrorVersion                      = int(C.ERROR_VERSION)
+	ErrorFail                         = int(C.ERROR_FAIL)
+	ErrorNi                           = int(C.ERROR_NI)
+	ErrorNomem                        = int(C.ERROR_NOMEM)
+	ErrorInval                        = int(C.ERROR_INVAL)
+	ErrorBadfail                      = int(C.ERROR_BADFAIL)
+	ErrorGuestTimedout                = int(C.ERROR_GUEST_TIMEDOUT)
+	ErrorTimedout                     = int(C.ERROR_TIMEDOUT)
+	ErrorNoparavirt                   = int(C.ERROR_NOPARAVIRT)
+	ErrorNotReady                     = int(C.ERROR_NOT_READY)
+	ErrorOseventRegFail               = int(C.ERROR_OSEVENT_REG_FAIL)
+	ErrorBufferfull                   = int(C.ERROR_BUFFERFULL)
+	ErrorUnknownChild                 = int(C.ERROR_UNKNOWN_CHILD)
+	ErrorLockFail                     = int(C.ERROR_LOCK_FAIL)
+	ErrorJsonConfigEmpty              = int(C.ERROR_JSON_CONFIG_EMPTY)
+	ErrorDeviceExists                 = int(C.ERROR_DEVICE_EXISTS)
+	ErrorCheckpointDevopsDoesNotMatch = int(C.ERROR_CHECKPOINT_DEVOPS_DOES_NOT_MATCH)
+	ErrorCheckpointDeviceNotSupported = int(C.ERROR_CHECKPOINT_DEVICE_NOT_SUPPORTED)
+	ErrorVnumaConfigInvalid           = int(C.ERROR_VNUMA_CONFIG_INVALID)
+	ErrorDomainNotfound               = int(C.ERROR_DOMAIN_NOTFOUND)
+	ErrorAborted                      = int(C.ERROR_ABORTED)
+	ErrorNotfound                     = int(C.ERROR_NOTFOUND)
+	ErrorDomainDestroyed              = int(C.ERROR_DOMAIN_DESTROYED)
+	ErrorFeatureRemoved               = int(C.ERROR_FEATURE_REMOVED)
+)
+
+func createError(method string, cerrNum C.int) (err error) {
+	method += " %s"
+	errNum := int(cerrNum)
+	switch errNum {
+	case ErrorNonspecific:
+		err = fmt.Errorf(method, "ERROR_NONSPECIFIC")
+	case ErrorVersion:
+		err = fmt.Errorf(method, "ERROR_VERSION")
+	case ErrorFail:
+		err = fmt.Errorf(method, "ERROR_FAIL")
+	case ErrorNi:
+		err = fmt.Errorf(method, "ERROR_NI")
+	case ErrorNomem:
+		err = fmt.Errorf(method, "ERROR_NOMEM")
+	case ErrorInval:
+		err = fmt.Errorf(method, "ERROR_INVAL")
+	case ErrorBadfail:
+		err = fmt.Errorf(method, "ERROR_BADFAIL")
+	case ErrorGuestTimedout:
+		err = fmt.Errorf(method, "ERROR_GUEST_TIMEDOUT")
+	case ErrorNoparavirt:
+		err = fmt.Errorf(method, "ERROR_NOPARAVIRT")
+	case ErrorNotReady:
+		err = fmt.Errorf(method, "ERROR_NOT_READY")
+	case ErrorOseventRegFail:
+		err = fmt.Errorf(method, "ERROR_OSEVENT_REG_FAIL")
+	case ErrorBufferfull:
+		err = fmt.Errorf(method, "ERROR_BUFFERFULL")
+	case ErrorUnknownChild:
+		err = fmt.Errorf(method, "ERROR_UNKNOWN_CHILD")
+	case ErrorLockFail:
+		err = fmt.Errorf(method, "ERROR_LOCK_FAIL")
+	case ErrorJsonConfigEmpty:
+		err = fmt.Errorf(method, "ERROR_JSON_CONFIG_EMPTY")
+	case ErrorDeviceExists:
+		err = fmt.Errorf(method, "ERROR_DEVICE_EXISTS")
+	case ErrorCheckpointDevopsDoesNotMatch:
+		err = fmt.Errorf(method, "ERROR_CHECKPOINT_DEVOPS_DOES_NOT_MATCH")
+	case ErrorCheckpointDeviceNotSupported:
+		err = fmt.Errorf(method, "ERROR_CHECKPOINT_DEVICE_NOT_SUPPORTED")
+	case ErrorVnumaConfigInvalid:
+		err = fmt.Errorf(method, "ERROR_VNUMA_CONFIG_INVALID")
+	case ErrorDomainNotfound:
+		err = fmt.Errorf(method, "ERROR_DOMAIN_NOTFOUND")
+	case ErrorAborted:
+		err = fmt.Errorf(method, "ERROR_ABORTED")
+	case ErrorNotfound:
+		err = fmt.Errorf(method, "ERROR_NOTFOUND")
+	case ErrorDomainDestroyed:
+		err = fmt.Errorf(method, "ERROR_DOMAIN_DESTROYED")
+	case ErrorFeatureRemoved:
+		err = fmt.Errorf(method, "ERROR_FEATURE_REMOVED")
+	default:
+		err = fmt.Errorf(method, "error not found")
+	}
+	return
+
+}
+
+/*
  * Types: Builtins
  */
 type Context struct {
-- 
2.1.4