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openssh-portable
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Factor out code to disconnect from controlling terminal
into its own function.  ok djm@

Upstream-ID: 39fd9e8ebd7222615a837312face5cc7ae962885
This commit is contained in:
dtucker@openbsd.org 2016-11-29 03:54:50 +00:00 committed by Damien Miller
parent 54d022026a
commit b0899ee26a
3 changed files with 20 additions and 18 deletions
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19
sshd.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: sshd.c,v 1.476 2016/09/28 16:33:07 djm Exp $ */
/* $OpenBSD: sshd.c,v 1.477 2016/11/29 03:54:50 dtucker Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@ -123,10 +123,6 @@
#include "version.h"
#include "ssherr.h"
#ifndef O_NOCTTY
#define O_NOCTTY 0
#endif
/* Re-exec fds */
#define REEXEC_DEVCRYPTO_RESERVED_FD (STDERR_FILENO + 1)
#define REEXEC_STARTUP_PIPE_FD (STDERR_FILENO + 2)
@ -1807,20 +1803,11 @@ main(int ac, char **av)
* exits.
*/
if (!(debug_flag || inetd_flag || no_daemon_flag)) {
#ifdef TIOCNOTTY
int fd;
#endif /* TIOCNOTTY */
if (daemon(0, 0) < 0)
fatal("daemon() failed: %.200s", strerror(errno));
/* Disconnect from the controlling tty. */
#ifdef TIOCNOTTY
fd = open(_PATH_TTY, O_RDWR | O_NOCTTY);
if (fd >= 0) {
(void) ioctl(fd, TIOCNOTTY, NULL);
close(fd);
}
#endif /* TIOCNOTTY */
disconnect_controlling_tty();
}
/* Reinitialize the log (because of the fork above). */
log_init(__progname, options.log_level, options.log_facility, log_stderr);

16
sshpty.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: sshpty.c,v 1.30 2015/07/30 23:09:15 djm Exp $ */
/* $OpenBSD: sshpty.c,v 1.31 2016/11/29 03:54:50 dtucker Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@ -238,3 +238,17 @@ pty_setowner(struct passwd *pw, const char *tty)
}
}
}
/* Disconnect from the controlling tty. */
void
disconnect_controlling_tty(void)
{
#ifdef TIOCNOTTY
int fd;
if ((fd = open(_PATH_TTY, O_RDWR | O_NOCTTY)) >= 0) {
(void) ioctl(fd, TIOCNOTTY, NULL);
close(fd);
}
#endif /* TIOCNOTTY */
}

3
sshpty.h
View File

@ -1,4 +1,4 @@
/* $OpenBSD: sshpty.h,v 1.12 2010/01/09 05:04:24 djm Exp $ */
/* $OpenBSD: sshpty.h,v 1.13 2016/11/29 03:54:50 dtucker Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
@ -25,3 +25,4 @@ void pty_release(const char *);
void pty_make_controlling_tty(int *, const char *);
void pty_change_window_size(int, u_int, u_int, u_int, u_int);
void pty_setowner(struct passwd *, const char *);
void disconnect_controlling_tty(void);