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net/dns: error out on linux if /etc/resolv.conf can't be read.

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Signed-off-by: David Anderson <danderson@tailscale.com>
This commit is contained in:
David Anderson 2021-04-14 15:35:32 -07:00
parent 1f9b73a531
commit 4849a4d3c8
1 changed files with 3 additions and 0 deletions
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3
net/dns/manager_linux.go
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@ -23,6 +23,9 @@ func NewOSConfigurator(logf logger.Logf, interfaceName string) (OSConfigurator,
if os.IsNotExist(err) { if os.IsNotExist(err) {
return newDirectManager() return newDirectManager()
} }
if err != nil {
return nil, fmt.Errorf("reading /etc/resolv.conf: %w", err)
}
switch resolvOwner(bs) { switch resolvOwner(bs) {
case "systemd-resolved": case "systemd-resolved":