Added ListAllInterfaces and integration test

integration_test.go

@@ -729,3 +729,31 @@ func TestGetDomainCPUStats(t *testing.T) {
 // 		return
 // 	}
 // }
+
+func TestListAllInterfaces(t *testing.T) {
+	conn, err := NewVirConnection("lxc:///")
+	if err != nil {
+		t.Error(err)
+		return
+	}
+	defer conn.CloseConnection()
+	ifaces, err := conn.ListAllInterfaces(0)
+	if err != nil {
+		t.Fatal(err)
+	}
+	lookingFor := "lo"
+	found := false
+	for _, iface := range ifaces {
+		name, err := iface.GetName()
+		if err != nil {
+			t.Fatal(err)
+		}
+		if name == lookingFor {
+			found = true
+			break
+		}
+	}
+	if found == false {
+		t.Fatalf("interface %s not found", lookingFor)
+	}
+}

libvirt.go

@@ -4,6 +4,7 @@ import (
 	"errors"
 	"fmt"
 	"io/ioutil"
+	"reflect"
 	"unsafe"
 )
 
@@ -617,3 +618,23 @@ func (c *VirConnection) LookupSecretByUsage(usageType int, usageID string) (VirS
 	}
 	return VirSecret{ptr: ptr}, nil
 }
+
+func (c *VirConnection) ListAllInterfaces(flags uint32) ([]VirInterface, error) {
+	var cList *C.virInterfacePtr
+	numIfaces := C.virConnectListAllInterfaces(c.ptr, (**C.virInterfacePtr)(&cList), C.uint(flags))
+	if numIfaces == -1 {
+		return nil, errors.New(GetLastError())
+	}
+	hdr := reflect.SliceHeader{
+		Data: uintptr(unsafe.Pointer(cList)),
+		Len:  int(numIfaces),
+		Cap:  int(numIfaces),
+	}
+	var ifaces []VirInterface
+	slice := *(*[]C.virInterfacePtr)(unsafe.Pointer(&hdr))
+	for _, ptr := range slice {
+		ifaces = append(ifaces, VirInterface{ptr})
+	}
+	C.free(unsafe.Pointer(cList))
+	return ifaces, nil
+}