device: fail to give bind if it doesn't exist

This commit is contained in:
Jason A. Donenfeld 2019-05-17 15:35:20 +02:00
parent 95c70b8032
commit c718f3940d
2 changed files with 13 additions and 2 deletions

View File

@ -5,8 +5,14 @@
package device
import "errors"
func (device *Device) PeekLookAtSocketFd4() (fd int, err error) {
sysconn, err := device.net.bind.(*nativeBind).ipv4.SyscallConn()
nb, ok := device.net.bind.(*nativeBind)
if !ok {
return 0, errors.New("no socket exists")
}
sysconn, err := nb.ipv4.SyscallConn()
if err != nil {
return
}
@ -20,7 +26,11 @@ func (device *Device) PeekLookAtSocketFd4() (fd int, err error) {
}
func (device *Device) PeekLookAtSocketFd6() (fd int, err error) {
sysconn, err := device.net.bind.(*nativeBind).ipv6.SyscallConn()
nb, ok := device.net.bind.(*nativeBind)
if !ok {
return 0, errors.New("no socket exists")
}
sysconn, err := nb.ipv6.SyscallConn()
if err != nil {
return
}

View File

@ -133,6 +133,7 @@ func deviceUpdateState(device *Device) {
switch newIsUp {
case true:
if err := device.BindUpdate(); err != nil {
device.log.Error.Printf("Unable to update bind: %v\n", err)
device.isUp.Set(false)
break
}