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37 lines
1.2 KiB
Go
37 lines
1.2 KiB
Go
// Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package dns
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// DNSRoutingMode describes the type of per-domain DNS routing that
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// the OS is capable of.
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type RoutingMode int
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const (
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// RoutingModeNone means the OS only supports setting a single
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// primary set of DNS resolvers.
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RoutingModeNone RoutingMode = iota
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// RoutingModeSingle means the OS supports a set of
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// primary resolvers, as well as one set of additional per-suffix
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// resolvers per network interface.
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RoutingModeSingle
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// RoutingModeMulti means the OS supports a set of primary
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// resolvers, as well as an arbitrary overlay of DNS routes.
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RoutingModeMulti
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)
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// An OSConfigurator applies DNS settings to the operating system.
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type OSConfigurator interface {
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// Set updates the OS's DNS configuration to match cfg.
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// If cfg nil or the zero value, all Tailscale-related DNS
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// configuration is removed.
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// Set must not be called after Close.
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Set(cfg OSConfig) error
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// DNSRoutingMode reports the DNS routing capabilities of this OS
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// configurator.
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RoutingMode() RoutingMode
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// Close removes Tailscale-related DNS configuration from the OS.
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Close() error
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}
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