netlink

Documentation

Index

• func IsDelAddr(msg *syscall.NetlinkMessage) bool
• func IsNewAddr(msg *syscall.NetlinkMessage) bool
• type Listener
  • func CreateListener() (*Listener, error)
  • func (l *Listener) ReadMsgs() ([]syscall.NetlinkMessage, error)

Functions

func IsDelAddr

func IsDelAddr(msg *syscall.NetlinkMessage) bool

IsDelAddr checking message type for syscall.RTM_RTM_DELADDRNEWADDR

func IsNewAddr

func IsNewAddr(msg *syscall.NetlinkMessage) bool

IsNewAddr checking message type for syscall.RTM_NEWADDR

Types

type Listener

type Listener struct {
	// contains filtered or unexported fields
}

Listener provides possibility to listen for a netlink messages

Usage example:

l, err := CreateListener()
if err != nil {
	fmt.Println("Failed to initialize netlink listener: %s", err)
	return
}
for {
	msgs, err := l.ReadMsgs()
	if err != nil {
		fmt.Println("Could not read netlink messages: %s", err)
	}
	for _, m := range msgs {
		if IsNewAddr(&m) || IsDelAddr(&m) {
			fmt.Println("Address changed")
		}
	}
}

func CreateListener

func CreateListener() (*Listener, error)

CreateListener creates new NetlinkListener object

func (*Listener) ReadMsgs

func (l *Listener) ReadMsgs() ([]syscall.NetlinkMessage, error)

ReadMsgs return received messages