package/wireguard-go
1
0
Fork 0
mirror of https://git.zx2c4.com/wireguard-go synced 2025-10-12 20:10:23 +08:00
Code Issues Packages Projects Releases Wiki Activity

Allow determining name

Browse Source
This commit is contained in:
Jason A. Donenfeld
2018-04-18 16:39:14 +02:00
parent 0b940a7568
commit 26a56a652e
3 changed files with 28 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
tun_linux.go
View File

@@ -11,6 +11,7 @@ import (
"golang.org/x/sys/unix"
"net"
"os"
"strconv"
"strings"
"time"
"unsafe"
@@ -130,10 +131,6 @@ func (tun *NativeTun) isUp() (bool, error) {
return inter.Flags&net.FlagUp != 0, err
}
func (tun *NativeTun) Name() string {
return tun.name
}
func getDummySock() (int, error) {
return unix.Socket(
unix.AF_INET,
@@ -229,7 +226,7 @@ func (tun *NativeTun) MTU() (int, error) {
uintptr(unsafe.Pointer(&ifr[0])),
)
if errno != 0 {
return 0, errors.New("Failed to get MTU of TUN device")
return 0, errors.New("Failed to get MTU of TUN device: " + strconv.FormatInt(int64(errno), 10))
}
// convert result to signed 32-bit int
@@ -241,6 +238,22 @@ func (tun *NativeTun) MTU() (int, error) {
return int(val), nil
}
func (tun *NativeTun) Name() (string, error) {
var ifr [ifReqSize]byte
_, _, errno := unix.Syscall(
unix.SYS_IOCTL,
tun.fd.Fd(),
uintptr(unix.TUNGETIFF),
uintptr(unsafe.Pointer(&ifr[0])),
)
if errno != 0 {
return "", errors.New("Failed to get name of TUN device: " + strconv.FormatInt(int64(errno), 10))
}
tun.name = string(ifr[:])
return tun.name, nil
}
func (tun *NativeTun) Write(buff []byte, offset int) (int, error) {
if tun.nopi {
@@ -342,7 +355,7 @@ func CreateTUN(name string) (TUNDevice, error) {
_, _, errno := unix.Syscall(
unix.SYS_IOCTL,
uintptr(fd.Fd()),
fd.Fd(),
uintptr(unix.TUNSETIFF),
uintptr(unsafe.Pointer(&ifr[0])),
)