upstream Don't reset signal handlers inside handlers.

The signal handlers from the original ssh1 code on which OpenSSH
is based assume unreliable signals and reinstall their handlers.
Since OpenBSD (and pretty much every current system) has reliable
signals this is not needed.  In the unlikely even that -portable
is still being used on such systems we will deal with it in the
compat layer.  ok deraadt@

OpenBSD-Commit-ID: f53a1015cb6908431b92116130d285d71589612c

1 files changed, 1 insertions, 4 deletions

diff --git a/sshd.c b/sshd.c
index 77231c33b..17931068d 100644
--- a/sshd.c
+++ b/sshd.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: sshd.c,v 1.503 2018/01/23 20:00:58 stsp Exp $ */
+/* $OpenBSD: sshd.c,v 1.504 2018/02/11 21:16:56 dtucker Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -283,7 +283,6 @@ sighup_handler(int sig)
         int save_errno = errno;
 
         received_sighup = 1;
-        signal(SIGHUP, sighup_handler);
         errno = save_errno;
 }
 
@@ -333,8 +332,6 @@ main_sigchld_handler(int sig)
         while ((pid = waitpid(-1, &status, WNOHANG)) > 0 ||
             (pid < 0 && errno == EINTR))
                 ;
-
-        signal(SIGCHLD, main_sigchld_handler);
         errno = save_errno;
 }