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upstream: Don't clear alarm timers in listening sshd. Previously 

these timers were used for regenerating the SSH1 ephemeral host keys but
those are now gone so there's no need to clear the timers either.  ok
deraadt@

OpenBSD-Commit-ID: 280d2b885e4a1ce404632e8cc38fcb17be7dafc0
This commit is contained in:
dtucker@openbsd.org 2020-03-13 03:24:49 +00:00 committed by Damien Miller
parent d081f017c2
commit eef88418f9
1 changed files with 2 additions and 8 deletions
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10
sshd.c
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@ -1,4 +1,4 @@
/* $OpenBSD: sshd.c,v 1.550 2020/03/13 03:17:07 djm Exp $ */
/* $OpenBSD: sshd.c,v 1.551 2020/03/13 03:24:49 dtucker Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@ -317,7 +317,6 @@ sighup_restart(void)
platform_pre_restart();
close_listen_socks();
close_startup_pipes();
alarm(0); /* alarm timer persists across exec */
ssh_signal(SIGHUP, SIG_IGN); /* will be restored after exec */
execv(saved_argv[0], saved_argv);
logit("RESTART FAILED: av[0]='%.100s', error: %.100s.", saved_argv[0],
@ -2085,12 +2084,7 @@ main(int ac, char **av)
fcntl(sock_out, F_SETFD, FD_CLOEXEC);
fcntl(sock_in, F_SETFD, FD_CLOEXEC);
/*
* Disable the key regeneration alarm. We will not regenerate the
* key since we are no longer in a position to give it to anyone. We
* will not restart on SIGHUP since it no longer makes sense.
*/
alarm(0);
/* We will not restart on SIGHUP since it no longer makes sense. */
ssh_signal(SIGALRM, SIG_DFL);
ssh_signal(SIGHUP, SIG_DFL);
ssh_signal(SIGTERM, SIG_DFL);