Update

vendor/tailscale.com/feature/hooks.go

@@ -1,9 +1,10 @@
-// Copyright (c) Tailscale Inc & AUTHORS
+// Copyright (c) Tailscale Inc & contributors
 // SPDX-License-Identifier: BSD-3-Clause
 
 package feature
 
 import (
+	"io"
 	"net/http"
 	"net/url"
 	"os"
@@ -13,6 +14,21 @@ import (
 	"tailscale.com/types/persist"
 )
 
+// HookRegisterLogSinkFlags is a hook for the syslog feature to register
+// its flags (such as tailscaled's --syslog) with the process's default
+// flag set. If set, tailscaled calls it before flag parsing.
+var HookRegisterLogSinkFlags Hook[func()]
+
+// HookLogSink is a hook for the syslog feature to redirect the process's
+// logs to an alternate sink. If set, tailscaled calls it once early in
+// main, after flag parsing; on that first call, if the user requested an
+// alternate sink, it points the standard library's default logger at that
+// sink. It returns the sink, or nil if logs are not being redirected.
+// Later callers (such as logpolicy, which otherwise writes its console
+// copy of logs to stderr) use the returned writer to send their logs to
+// the same place.
+var HookLogSink Hook[func() io.Writer]
+
 // HookCanAutoUpdate is a hook for the clientupdate package
 // to conditionally initialize.
 var HookCanAutoUpdate Hook[func() bool]
@@ -67,6 +83,11 @@ func TPMAvailable() bool {
 	return false
 }
 
+// HookGetSSHHostKeyPublicStrings is a hook for the ssh/hostkeys package to
+// provide SSH host key public strings to ipn/ipnlocal without ipnlocal needing
+// to import golang.org/x/crypto/ssh.
+var HookGetSSHHostKeyPublicStrings Hook[func(varRoot string, logf logger.Logf) ([]string, error)]
+
 // HookHardwareAttestationAvailable is a hook that reports whether hardware
 // attestation is supported and available.
 var HookHardwareAttestationAvailable Hook[func() bool]