diff options
Diffstat (limited to 'tun')
| -rw-r--r-- | tun/tun_darwin.go | 12 | ||||
| -rw-r--r-- | tun/tun_linux.go | 22 |
2 files changed, 29 insertions, 5 deletions
diff --git a/tun/tun_darwin.go b/tun/tun_darwin.go index 600b156..3b39982 100644 --- a/tun/tun_darwin.go +++ b/tun/tun_darwin.go @@ -171,7 +171,7 @@ func CreateTUNFromFile(file *os.File, mtu int) (TUNDevice, error) { tun := &NativeTun{ tunFile: file, events: make(chan TUNEvent, 10), - errors: make(chan error, 1), + errors: make(chan error, 5), } name, err := tun.Name() @@ -200,10 +200,12 @@ func CreateTUNFromFile(file *os.File, mtu int) (TUNDevice, error) { go tun.routineRouteListener(tunIfindex) - err = tun.setMTU(mtu) - if err != nil { - tun.Close() - return nil, err + if mtu > 0 { + err = tun.setMTU(mtu) + if err != nil { + tun.Close() + return nil, err + } } return tun, nil diff --git a/tun/tun_linux.go b/tun/tun_linux.go index f808079..c352c1a 100644 --- a/tun/tun_linux.go +++ b/tun/tun_linux.go @@ -443,3 +443,25 @@ func CreateTUNFromFile(file *os.File, mtu int) (TUNDevice, error) { return tun, nil } + +func CreateUnmonitoredTUNFromFD(tunFd int) (TUNDevice, string, error) { + file := os.NewFile(uintptr(tunFd), "/dev/tun") + tun := &NativeTun{ + tunFile: file, + fd: file.Fd(), + events: make(chan TUNEvent, 5), + errors: make(chan error, 5), + nopi: true, + } + var err error + tun.fdCancel, err = rwcancel.NewRWCancel(int(tun.fd)) + if err != nil { + return nil, "", err + } + name, err := tun.Name() + if err != nil { + tun.fdCancel.Cancel() + return nil, "", err + } + return tun, name, nil +} |