[Xen-devel] [PATCH] golang/xenlight: Add libxl_utils support

[Nicolas Belouin <nicolas.belouin@xxxxxxxxx>]

The Go bindings for libxl miss functions from libxl_utils, lets start
with the simple libxl_domid_to_name and its counterpart
libxl_name_to_domid.

Signed-off-by: Nicolas Belouin <nicolas.belouin@xxxxxxxxx>
---
 tools/golang/xenlight/xenlight_utils.go | 61 +++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 tools/golang/xenlight/xenlight_utils.go

diff --git a/tools/golang/xenlight/xenlight_utils.go 
b/tools/golang/xenlight/xenlight_utils.go
new file mode 100644
index 0000000000..ab7a585ec7
--- /dev/null
+++ b/tools/golang/xenlight/xenlight_utils.go
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2019 Nicolas Belouin, Gandi SAS
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; If not, see <http://www.gnu.org/licenses/>.
+ */
+package xenlight
+
+/*
+#cgo LDFLAGS: -lxenlight -lyajl -lxentoollog
+#include <stdlib.h>
+#include <libxl_utils.h>
+*/
+import "C"
+
+/*
+ * Other flags that may be needed at some point:
+ *  -lnl-route-3 -lnl-3
+ *
+ * To get back to static linking:
+ * #cgo LDFLAGS: -lxenlight -lyajl_s -lxengnttab -lxenstore -lxenguest 
-lxentoollog -lxenevtchn -lxenctrl -lxenforeignmemory -lxencall -lz -luuid 
-lutil
+ */
+
+import (
+       "unsafe"
+)
+
+//char* libxl_domid_to_name(libxl_ctx *ctx, uint32_t domid);
+func (Ctx *Context) DomidToName(id Domid) (name string) {
+       cDomName := C.libxl_domid_to_name(Ctx.ctx, C.uint32_t(id))
+       name = C.GoString(cDomName)
+       return
+}
+
+//int libxl_name_to_domid(libxl_ct *ctx, const char *name, uint32_t *domid)
+func (Ctx *Context) NameToDomid(name string) (id Domid, err error) {
+       cname := C.CString(name)
+       defer C.free(unsafe.Pointer(cname))
+
+       var cDomId C.uint32_t
+
+       ret := C.libxl_name_to_domid(Ctx.ctx, cname, &cDomId)
+       if ret != 0 {
+               err = Error(-ret)
+               return
+       }
+
+       id = Domid(cDomId)
+
+       return
+}
-- 
2.22.0


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