From 4abd97d807a1c3629e4f9bf7c9b3a47914c5d6db Mon Sep 17 00:00:00 2001
From: florian <florian@openbsd.org>
Date: Sat, 4 Aug 2018 09:36:49 +0000
Subject: [PATCH] Leave the control socket behind on shutdown. It doesn't hurt
 anyone. On the other hand it is much more powerful to get rid of cpath;
 slaacd has no filesystem access whatsoever. Triggered by mestre@'s work to
 fix unlinking in other daemons and a question from deraadt@ OK mestre

---
 sbin/slaacd/control.c | 13 +------------
 sbin/slaacd/control.h |  3 +--
 sbin/slaacd/slaacd.c  | 19 +++++--------------
 3 files changed, 7 insertions(+), 28 deletions(-)

diff --git a/sbin/slaacd/control.c b/sbin/slaacd/control.c
index 1d3556b612f..1a0c2b0305a 100644
--- a/sbin/slaacd/control.c
+++ b/sbin/slaacd/control.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: control.c,v 1.3 2018/04/26 17:08:18 florian Exp $	*/
+/*	$OpenBSD: control.c,v 1.4 2018/08/04 09:36:49 florian Exp $	*/
 
 /*
  * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
@@ -105,17 +105,6 @@ control_listen(void)
 	return (0);
 }
 
-void
-control_cleanup(char *path)
-{
-	if (path == NULL)
-		return;
-	event_del(&control_state.ev);
-	event_del(&control_state.evt);
-	if (unlink(path) != 0)
-		log_warn("unlink %s", path);
-}
-
 void
 control_accept(int listenfd, short event, void *bula)
 {
diff --git a/sbin/slaacd/control.h b/sbin/slaacd/control.h
index 52b576c5862..c244ed5a5a4 100644
--- a/sbin/slaacd/control.h
+++ b/sbin/slaacd/control.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: control.h,v 1.2 2017/07/06 15:02:53 florian Exp $	*/
+/*	$OpenBSD: control.h,v 1.3 2018/08/04 09:36:49 florian Exp $	*/
 
 /*
  * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
@@ -33,5 +33,4 @@ int	control_listen(void);
 void	control_accept(int, short, void *);
 void	control_dispatch_imsg(int, short, void *);
 int	control_imsg_relay(struct imsg *);
-void	control_cleanup(char *);
 #endif	/* SMALL */
diff --git a/sbin/slaacd/slaacd.c b/sbin/slaacd/slaacd.c
index 344fc148537..244ac4350d9 100644
--- a/sbin/slaacd/slaacd.c
+++ b/sbin/slaacd/slaacd.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: slaacd.c,v 1.28 2018/07/27 06:20:01 bket Exp $	*/
+/*	$OpenBSD: slaacd.c,v 1.29 2018/08/04 09:36:49 florian Exp $	*/
 
 /*
  * Copyright (c) 2017 Florian Obser <florian@openbsd.org>
@@ -80,11 +80,7 @@ struct imsgev		*iev_engine;
 pid_t	 frontend_pid;
 pid_t	 engine_pid;
 
-int	 routesock, ioctl_sock;
-
-char	*csock;
-
-int	 rtm_seq = 0;
+int	 routesock, ioctl_sock, rtm_seq = 0;
 
 void
 main_sig_handler(int sig, short event, void *arg)
@@ -129,12 +125,11 @@ main(int argc, char *argv[])
 	int			 pipe_main2engine[2];
 	int			 icmp6sock, on = 1;
 	int			 frontend_routesock, rtfilter;
+	char			*csock = SLAACD_SOCKET;
 #ifndef SMALL
 	int			 control_fd;
 #endif /* SMALL */
 
-	csock = SLAACD_SOCKET;
-
 	log_init(1, LOG_DAEMON);	/* Log to stderr until daemonized. */
 	log_setverbose(1);
 
@@ -285,7 +280,7 @@ main(int argc, char *argv[])
 		fatalx("control socket setup failed");
 #endif /* SMALL */
 
-	if (pledge("stdio cpath sendfd wroute", NULL) == -1)
+	if (pledge("stdio sendfd wroute", NULL) == -1)
 		fatal("pledge");
 
 	main_imsg_compose_frontend_fd(IMSG_ICMP6SOCK, 0, icmp6sock);
@@ -331,10 +326,6 @@ main_shutdown(void)
 	free(iev_frontend);
 	free(iev_engine);
 
-#ifndef	SMALL
-	control_cleanup(csock);
-#endif	/* SMALL */
-
 	log_info("terminating");
 	exit(0);
 }
@@ -420,7 +411,7 @@ main_dispatch_frontend(int fd, short event, void *bula)
 
 		switch (imsg.hdr.type) {
 		case IMSG_STARTUP_DONE:
-			if (pledge("stdio cpath wroute", NULL) == -1)
+			if (pledge("stdio wroute", NULL) == -1)
 				fatal("pledge");
 			break;
 #ifndef	SMALL
-- 
2.20.1