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tailscale/cmd/tailscaled/childproc/childproc.go

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
}