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b0e96a6c39
Updates #11129 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: Ic594868ba3bc31f6d3b0721ecba4090749a81f7f
39 lines
879 B
Go
39 lines
879 B
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package dns
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import (
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"fmt"
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"os"
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"tailscale.com/types/logger"
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)
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func NewOSConfigurator(logf logger.Logf, _ string) (OSConfigurator, error) {
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bs, err := os.ReadFile("/etc/resolv.conf")
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if os.IsNotExist(err) {
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return newDirectManager(logf), nil
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}
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if err != nil {
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return nil, fmt.Errorf("reading /etc/resolv.conf: %w", err)
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}
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switch resolvOwner(bs) {
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case "resolvconf":
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switch resolvconfStyle() {
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case "":
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return newDirectManager(logf), nil
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case "debian":
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return newDebianResolvconfManager(logf)
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case "openresolv":
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return newOpenresolvManager(logf)
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default:
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logf("[unexpected] got unknown flavor of resolvconf %q, falling back to direct manager", resolvconfStyle())
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return newDirectManager(logf), nil
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}
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default:
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return newDirectManager(logf), nil
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}
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}
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