// newUnitNumber returns the unit number to use for attaching a new device to the given controller.
func (l VirtualDeviceList) newUnitNumber(c types.BaseVirtualController) int32 {
units := make([]bool, 30)
switch sc := c.(type) {
case types.BaseVirtualSCSIController:
// The SCSI controller sits on its own bus
units[sc.GetVirtualSCSIController().ScsiCtlrUnitNumber] = true
}
key := c.GetVirtualController().Key
for _, device := range l {
d := device.GetVirtualDevice()
if d.ControllerKey == key && d.UnitNumber != nil {
units[int(*d.UnitNumber)] = true
}
}
for unit, used := range units {
if !used {
return int32(unit)
}
}
return -1
}
// AssignController assigns a device to a controller.
func (l VirtualDeviceList) AssignController(device types.BaseVirtualDevice, c types.BaseVirtualController) {
d := device.GetVirtualDevice()
d.ControllerKey = c.GetVirtualController().Key
d.UnitNumber = new(int32)
*d.UnitNumber = l.newUnitNumber(c)
if d.Key == 0 {
d.Key = -1
}
}
// NewVirtualDisk returns a new disk attached to the controller
func NewVirtualDisk(controller types.BaseVirtualController) *types.VirtualDisk {
defer trace.End(trace.Begin(""))
return &types.VirtualDisk{
VirtualDevice: types.VirtualDevice{
ControllerKey: controller.GetVirtualController().Key,
UnitNumber: new(int32),
},
}
}
// AssignController assigns a device to a controller.
func (l VirtualDeviceList) AssignController(device types.BaseVirtualDevice, c types.BaseVirtualController) {
d := device.GetVirtualDevice()
d.ControllerKey = c.GetVirtualController().Key
d.UnitNumber = l.newUnitNumber(c)
if d.UnitNumber == 0 {
d.UnitNumber = -1 // TODO: this field is annotated as omitempty
}
if d.Key == 0 {
d.Key = -1
}
}
// newUnitNumber returns the unit number to use for attaching a new device to the given controller.
func (l VirtualDeviceList) newUnitNumber(c types.BaseVirtualController) int32 {
key := c.GetVirtualController().Key
var max int32 = -1
for _, device := range l {
d := device.GetVirtualDevice()
if d.ControllerKey == key {
if d.UnitNumber != nil && *d.UnitNumber > max {
max = *d.UnitNumber
}
}
}
return max + 1
}
func getNextUnitNumber(devices object.VirtualDeviceList, c types.BaseVirtualController) (int32, error) {
// get next available SCSI controller unit number
var takenUnitNumbers [SCSIDeviceSlots]bool
takenUnitNumbers[SCSIReservedSlot] = true
key := c.GetVirtualController().Key
for _, device := range devices {
d := device.GetVirtualDevice()
if d.ControllerKey == key {
if d.UnitNumber != nil {
takenUnitNumbers[*d.UnitNumber] = true
}
}
}
for unitNumber, takenUnitNumber := range takenUnitNumbers {
if !takenUnitNumber {
return int32(unitNumber), nil
}
}
return -1, fmt.Errorf("SCSI Controller with key=%d does not have any available slots (LUN).", key)
}