mirror of
https://github.com/tailscale/tailscale.git
synced 2024-11-29 13:05:46 +00:00
8432999835
Straight move+fixup, no other changes. In prep for merging with wgengine/router/dns. Signed-off-by: David Anderson <danderson@tailscale.com>
26 lines
580 B
Go
26 lines
580 B
Go
// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package dns
|
|
|
|
import (
|
|
"errors"
|
|
"syscall"
|
|
)
|
|
|
|
// Avoid allocation when calling errors.Is below
|
|
// by converting syscall.Errno to error here.
|
|
var (
|
|
networkDown error = syscall.ENETDOWN
|
|
networkUnreachable error = syscall.ENETUNREACH
|
|
)
|
|
|
|
func networkIsDown(err error) bool {
|
|
return errors.Is(err, networkDown)
|
|
}
|
|
|
|
func networkIsUnreachable(err error) bool {
|
|
return errors.Is(err, networkUnreachable)
|
|
}
|