[v3,08/22] golang/xenlight: define MsVmGenid builtin type

Commit Message

Nick Rosbrook Dec. 10, 2019, 3:47 p.m. UTC

From: Nick Rosbrook <[e-mail]>

Define MsVmGenid as [int(C.LIBXL_MS_VM_GENID_LEN)]byte and implement fromC and toC functions.

Signed-off-by: Nick Rosbrook <[e-mail]>
Reviewed-by: George Dunlap <[e-mail]>
---
Changes in v3:
- In fromC, iterate over the indirect of mvg instead of creating
  a slice from the C type.
---
 tools/golang/xenlight/xenlight.go | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

Patch

diff --git a/tools/golang/xenlight/xenlight.go b/tools/golang/xenlight/xenlight.go
index 17d146771e..6c3868cd69 100644
--- a/tools/golang/xenlight/xenlight.go
+++ b/tools/golang/xenlight/xenlight.go
@@ -214,6 +214,27 @@  func (mac Mac) toC() (C.libxl_mac, error) {
 	return cmac, nil
 }
 
+// MsVmGenid represents a libxl_ms_vm_genid.
+type MsVmGenid [int(C.LIBXL_MS_VM_GENID_LEN)]byte
+
+func (mvg *MsVmGenid) fromC(cmvg *C.libxl_ms_vm_genid) error {
+	for i := range *mvg {
+		mvg[i] = byte(cmvg.bytes[i])
+	}
+
+	return nil
+}
+
+func (mvg *MsVmGenid) toC() (C.libxl_ms_vm_genid, error) {
+	var cmvg C.libxl_ms_vm_genid
+
+	for i, v := range mvg {
+		cmvg.bytes[i] = C.uint8_t(v)
+	}
+
+	return cmvg, nil
+}
+
 type Context struct {
 	ctx    *C.libxl_ctx
 	logger *C.xentoollog_logger_stdiostream