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Install a signal handler for tty-generated signals and
wait for the ssh child to suspend before suspending sftp.  This lets ssh
restore the terminal mode as needed when it is suspended at the password
prompt.  OK dtucker@

Upstream-ID: a31c1f42aa3e2985dcc91e46e6a17bd22e372d69
This commit is contained in:
millert@openbsd.org 2016-10-18 12:41:22 +00:00 committed by Darren Tucker
parent fd2a8f1033
commit 2c6697c443
1 changed files with 16 additions and 1 deletions
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17
sftp.c
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@ -1,4 +1,4 @@
/* $OpenBSD: sftp.c,v 1.176 2016/09/12 01:22:38 deraadt Exp $ */
/* $OpenBSD: sftp.c,v 1.177 2016/10/18 12:41:22 millert Exp $ */
/*
* Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
*
@ -230,6 +230,18 @@ killchild(int signo)
_exit(1);
}
/* ARGSUSED */
static void
suspchild(int signo)
{
if (sshpid > 1) {
kill(sshpid, signo);
while (waitpid(sshpid, NULL, WUNTRACED) == -1 && errno == EINTR)
continue;
}
kill(getpid(), SIGSTOP);
}
/* ARGSUSED */
static void
cmd_interrupt(int signo)
@ -2213,6 +2225,9 @@ connect_to_server(char *path, char **args, int *in, int *out)
signal(SIGTERM, killchild);
signal(SIGINT, killchild);
signal(SIGHUP, killchild);
signal(SIGTSTP, suspchild);
signal(SIGTTIN, suspchild);
signal(SIGTTOU, suspchild);
close(c_in);
close(c_out);
}