Jason A. Donenfeld
4cd06c0925
tun: openbsd: check for interface already being up
...
In some cases, we operate on an already-up interface, or the user brings
up the interface before we start monitoring. For those situations, we
should first check if the interface is already up.
This still technically races between the initial check and the start of
the route loop, but fixing that is a bit ugly and probably not worth it
at the moment.
Reported-by: Theo Buehler <tb@theobuehler.org>
2019-09-07 00:13:23 -05:00
Michael Zeltner
4d5819183e
tun: openbsd: don't change MTU when it's already the expected size
...
Allows for running wireguard-go as non-root user.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2019-07-18 10:25:20 +02:00
Matt Layher
1f48971a80
tun: remove TUN prefix from types to reduce stutter elsewhere
...
Signed-off-by: Matt Layher <mdlayher@gmail.com>
2019-06-14 18:35:57 +02:00
Jason A. Donenfeld
eaf17becfa
global: fixup TODO comment spacing
2019-06-06 23:00:15 +02:00
Jason A. Donenfeld
3bf41b06ae
global: regroup all imports
2019-05-14 09:09:52 +02:00
Jason A. Donenfeld
6440f010ee
receive: implement flush semantics
2019-03-21 14:45:41 -06:00
Jason A. Donenfeld
967d1a0f3d
tun: allow special methods in NativeTun
2019-03-01 00:05:57 +01:00
Jason A. Donenfeld
366cbd11a4
tun: use netpoll instead of rwcancel
...
The new sysconn function of Go 1.12 makes this possible:
package main
import "log"
import "os"
import "unsafe"
import "time"
import "syscall"
import "sync"
import "golang.org/x/sys/unix"
func main() {
fd, err := os.OpenFile("/dev/net/tun", os.O_RDWR, 0)
if err != nil {
log.Fatal(err)
}
var ifr [unix.IFNAMSIZ + 64]byte
copy(ifr[:], []byte("cheese"))
*(*uint16)(unsafe.Pointer(&ifr[unix.IFNAMSIZ])) = unix.IFF_TUN
var errno syscall.Errno
s, _ := fd.SyscallConn()
s.Control(func(fd uintptr) {
_, _, errno = unix.Syscall(
unix.SYS_IOCTL,
fd,
uintptr(unix.TUNSETIFF),
uintptr(unsafe.Pointer(&ifr[0])),
)
})
if errno != 0 {
log.Fatal(errno)
}
b := [4]byte{}
wait := sync.WaitGroup{}
wait.Add(1)
go func() {
_, err := fd.Read(b[:])
log.Print("Read errored: ", err)
wait.Done()
}()
time.Sleep(time.Second)
log.Print("Closing")
err = fd.Close()
if err != nil {
log.Print("Close errored: " , err)
}
wait.Wait()
log.Print("Exiting")
}
2019-02-27 01:52:55 +01:00
Jason A. Donenfeld
ab0f442daf
tun: use sysconn instead of .Fd with Go 1.12
2019-02-27 01:34:11 +01:00
Jason A. Donenfeld
42c6d0e261
Change package path
2019-02-18 05:11:39 +01:00
Jason A. Donenfeld
dff424baf8
Update copyright
2019-02-05 12:59:42 +01:00
Jason A. Donenfeld
2e772194cf
tun: only call .Fd() once
...
Doing so tends to make the tunnel blocking, so we only retrieve it once
before we call SetNonblock, and then cache the result.
2018-10-17 21:31:42 +02:00
Jason A. Donenfeld
5be541d147
global: fix up copyright headers
2018-09-16 18:49:19 +02:00
Jason A. Donenfeld
5079298ce2
Disable broadcast mode on *BSD
...
Keeping it on makes IPv6 problematic and confuses routing daemons.
2018-05-27 22:55:15 +02:00
Jason A. Donenfeld
2f2eca8947
Catch EINTR
2018-05-24 15:36:29 +02:00
Jason A. Donenfeld
588b9f01ae
Adopt GOPATH
...
GOPATH is annoying, but the Go community pushing me to adopt it is even
more annoying.
2018-05-23 05:18:13 +02:00
Jason A. Donenfeld
0a63188afa
Move tun to subpackage
2018-05-23 03:58:27 +02:00
