75 lines
1.6 KiB
Go
75 lines
1.6 KiB
Go
package devicepath
|
|
|
|
import (
|
|
"errors"
|
|
"strings"
|
|
)
|
|
|
|
type DeviceNodeType uint8
|
|
|
|
const (
|
|
HardwareDevicePath DeviceNodeType = 0x01
|
|
ACPIDevicePath DeviceNodeType = 0x02
|
|
MessagingDevicePath DeviceNodeType = 0x03
|
|
MediaDevicePath DeviceNodeType = 0x04
|
|
BIOSBootSpecificationsDevicePath DeviceNodeType = 0x05
|
|
EndOfHardwareDevicePath DeviceNodeType = 0x7F
|
|
)
|
|
|
|
type DeviceNodeSubType uint8
|
|
|
|
const (
|
|
PCIHardware DeviceNodeSubType = 0x01
|
|
)
|
|
|
|
const (
|
|
SATAMessaging DeviceNodeSubType = 18
|
|
MacMessagingSubType DeviceNodeSubType = 11
|
|
IPv4MessagingSubType DeviceNodeSubType = 12
|
|
IPv6MessagingSubType DeviceNodeSubType = 13
|
|
)
|
|
|
|
const EndOfEntireDevicePath DeviceNodeSubType = 0xFF
|
|
|
|
const ACPISubType DeviceNodeSubType = 1
|
|
|
|
const (
|
|
HardDriveSubType DeviceNodeSubType = 1
|
|
FileSubType DeviceNodeSubType = 4
|
|
)
|
|
|
|
type DevicePathNode interface {
|
|
Type() DeviceNodeType
|
|
SubType() DeviceNodeSubType
|
|
ParseString(raw string) error
|
|
String() string
|
|
Bytes() []byte
|
|
}
|
|
|
|
var ErrPathComplete = errors.New("device path already complete")
|
|
|
|
type DevicePath struct {
|
|
Nodes []DevicePathNode
|
|
}
|
|
|
|
func (dp *DevicePath) complete() bool {
|
|
return len(dp.Nodes) > 0 && dp.Nodes[len(dp.Nodes)-1].Type() == EndOfHardwareDevicePath
|
|
}
|
|
|
|
func (dp *DevicePath) PushNode(node DevicePathNode) error {
|
|
if dp.complete() {
|
|
return ErrPathComplete
|
|
}
|
|
dp.Nodes = append(dp.Nodes, node)
|
|
return nil
|
|
}
|
|
|
|
func (dp *DevicePath) String() string {
|
|
var res []string
|
|
for _, node := range dp.Nodes {
|
|
if node.String() != "" {
|
|
res = append(res, node.String())
|
|
}
|
|
}
|
|
return strings.Join(res, "/")
|
|
}
|