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