Remove pledge(2) support

Fixes #571

dnscrypt-proxy/config.go

@@ -193,9 +193,6 @@ func ConfigLoad(proxy *Proxy, svcFlag *string) error {
 
 	flag.Parse()
 
-	if *child {
-		PledgeChild()
-	}
 	if *svcFlag == "stop" || *svcFlag == "uninstall" {
 		return nil
 	}

dnscrypt-proxy/main.go

@@ -25,8 +25,6 @@ type App struct {
 func main() {
 	dlog.Init("dnscrypt-proxy", dlog.SeverityNotice, "DAEMON")
 
-	Pledge()
-
 	pwd, err := os.Getwd()
 	if err != nil {
 		dlog.Fatal("Unable to find the path to the current directory")

dnscrypt-proxy/pledge_openbsd.go

@@ -1,15 +0,0 @@
-// +build openbsd
-
-package main
-
-import (
-	"golang.org/x/sys/unix"
-)
-
-func Pledge() {
-	unix.Pledge("stdio rpath wpath cpath tmppath inet fattr flock dns getpw sendfd recvfd proc exec id", nil)
-}
-
-func PledgeChild() {
-	unix.Pledge("stdio rpath wpath cpath tmppath inet fattr flock dns recvfd", nil)
-}

dnscrypt-proxy/pledge_others.go

@@ -1,11 +0,0 @@
-// +build !openbsd
-
-package main
-
-func Pledge() {
-
-}
-
-func PledgeChild() {
-
-}