tailscale/cmd/tailscaled/childproc/childproc.go
Brad Fitzpatrick 4cbdc84d27 cmd/tailscaled/childproc: add be-child registration mechanism
For ssh and maybe windows service babysitter later.

Updates #3802

Change-Id: I7492b98df98971b3fb72d148ba92c2276cca491f
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-02-24 14:20:20 -08:00

21 lines
746 B
Go

// Copyright (c) 2022 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 childproc allows other packages to register "tailscaled be-child"
// child process hook code. This avoids duplicating build tags in the
// tailscaled package. Instead, the code that needs to fork/exec the self
// executable (when it's tailscaled) can instead register the code
// they want to run.
package childproc
var Code = map[string]func([]string) error{}
// Add registers code f to run as 'tailscaled be-child <typ> [args]'.
func Add(typ string, f func(args []string) error) {
if _, dup := Code[typ]; dup {
panic("dup hook " + typ)
}
Code[typ] = f
}