mirror of
https://github.com/tailscale/tailscale.git
synced 2024-11-25 19:15:34 +00:00
7dd76c3411
This is implemented via GetBestInterfaceEx. Should we encounter errors or fail to resolve a valid, non-Tailscale interface, we fall back to returning the index for the default interface instead. Fixes #12551 Signed-off-by: Aaron Klotz <aaron@tailscale.com>
54 lines
1.2 KiB
Go
54 lines
1.2 KiB
Go
// Code generated by 'go generate'; DO NOT EDIT.
|
|
|
|
package netns
|
|
|
|
import (
|
|
"syscall"
|
|
"unsafe"
|
|
|
|
"golang.org/x/sys/windows"
|
|
"golang.zx2c4.com/wireguard/windows/tunnel/winipcfg"
|
|
)
|
|
|
|
var _ unsafe.Pointer
|
|
|
|
// Do the interface allocations only once for common
|
|
// Errno values.
|
|
const (
|
|
errnoERROR_IO_PENDING = 997
|
|
)
|
|
|
|
var (
|
|
errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING)
|
|
errERROR_EINVAL error = syscall.EINVAL
|
|
)
|
|
|
|
// errnoErr returns common boxed Errno values, to prevent
|
|
// allocations at runtime.
|
|
func errnoErr(e syscall.Errno) error {
|
|
switch e {
|
|
case 0:
|
|
return errERROR_EINVAL
|
|
case errnoERROR_IO_PENDING:
|
|
return errERROR_IO_PENDING
|
|
}
|
|
// TODO: add more here, after collecting data on the common
|
|
// error values see on Windows. (perhaps when running
|
|
// all.bat?)
|
|
return e
|
|
}
|
|
|
|
var (
|
|
modiphlpapi = windows.NewLazySystemDLL("iphlpapi.dll")
|
|
|
|
procGetBestInterfaceEx = modiphlpapi.NewProc("GetBestInterfaceEx")
|
|
)
|
|
|
|
func getBestInterfaceEx(sockaddr *winipcfg.RawSockaddrInet, bestIfaceIndex *uint32) (ret error) {
|
|
r0, _, _ := syscall.Syscall(procGetBestInterfaceEx.Addr(), 2, uintptr(unsafe.Pointer(sockaddr)), uintptr(unsafe.Pointer(bestIfaceIndex)), 0)
|
|
if r0 != 0 {
|
|
ret = syscall.Errno(r0)
|
|
}
|
|
return
|
|
}
|