- djm@cvs.openbsd.org 2010/01/09 05:04:24

     [mux.c sshpty.h clientloop.c sshtty.c]
     quell tc[gs]etattr warnings when forcing a tty (ssh -tt), since we
     usually don't actually have a tty to read/set; bz#1686 ok dtucker@

5 files changed, 37 insertions, 26 deletions

diff --git a/ChangeLog b/ChangeLog
index 3b7fb645..b3ae6bdb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -16,6 +16,10 @@
    - jmc@cvs.openbsd.org 2010/01/09 03:36:00
      [sftp-server.8]
      bad place to forget a comma...
+   - djm@cvs.openbsd.org 2010/01/09 05:04:24
+     [mux.c sshpty.h clientloop.c sshtty.c]
+     quell tc[gs]etattr warnings when forcing a tty (ssh -tt), since we
+     usually don't actually have a tty to read/set; bz#1686 ok dtucker@
 
 20091208
  - (dtucker) OpenBSD CVS Sync
diff --git a/clientloop.c b/clientloop.c
index eca87777..5793a6e9 100644
--- a/clientloop.c
+++ b/clientloop.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: clientloop.c,v 1.215 2009/11/17 05:31:44 djm Exp $ */
+/* $OpenBSD: clientloop.c,v 1.216 2010/01/09 05:04:24 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -130,6 +130,9 @@ extern int muxserver_sock;
  */
 extern char *host;
 
+/* Force TTY allocation */
+extern int force_tty_flag;
+
 /*
  * Flag to indicate that we have received a window change signal which has
  * not yet been processed.  This will cause a message indicating the new
@@ -610,7 +613,7 @@ client_suspend_self(Buffer *bin, Buffer *bout, Buffer *berr)
 		atomicio(vwrite, fileno(stderr), buffer_ptr(berr),
 		    buffer_len(berr));
 
-	leave_raw_mode();
+	leave_raw_mode(force_tty_flag);
 
 	/*
 	 * Free (and clear) the buffer to reduce the amount of data that gets
@@ -631,7 +634,7 @@ client_suspend_self(Buffer *bin, Buffer *bout, Buffer *berr)
 	buffer_init(bout);
 	buffer_init(berr);
 
-	enter_raw_mode();
+	enter_raw_mode(force_tty_flag);
 }
 
 static void
@@ -774,7 +777,7 @@ process_cmdline(void)
 	bzero(&fwd, sizeof(fwd));
 	fwd.listen_host = fwd.connect_host = NULL;
 
-	leave_raw_mode();
+	leave_raw_mode(force_tty_flag);
 	handler = signal(SIGINT, SIG_IGN);
 	cmd = s = read_passphrase("\r\nssh> ", RP_ECHO);
 	if (s == NULL)
@@ -877,7 +880,7 @@ process_cmdline(void)
 
 out:
 	signal(SIGINT, handler);
-	enter_raw_mode();
+	enter_raw_mode(force_tty_flag);
 	if (cmd)
 		xfree(cmd);
 	if (fwd.listen_host != NULL)
@@ -996,7 +999,7 @@ process_escapes(Channel *c, Buffer *bin, Buffer *bout, Buffer *berr,
 				 * more new connections).
 				 */
 				/* Restore tty modes. */
-				leave_raw_mode();
+				leave_raw_mode(force_tty_flag);
 
 				/* Stop listening for new connections. */
 				channel_stop_listening();
@@ -1291,7 +1294,7 @@ client_channel_closed(int id, void *arg)
 {
 	channel_cancel_cleanup(id);
 	session_closed = 1;
-	leave_raw_mode();
+	leave_raw_mode(force_tty_flag);
 }
 
 /*
@@ -1364,7 +1367,7 @@ client_loop(int have_pty, int escape_char_arg, int ssh2_chan_id)
 	signal(SIGWINCH, window_change_handler);
 
 	if (have_pty)
-		enter_raw_mode();
+		enter_raw_mode(force_tty_flag);
 
 	if (compat20) {
 		session_ident = ssh2_chan_id;
@@ -1498,7 +1501,7 @@ client_loop(int have_pty, int escape_char_arg, int ssh2_chan_id)
 	channel_free_all();
 
 	if (have_pty)
-		leave_raw_mode();
+		leave_raw_mode(force_tty_flag);
 
 	/* restore blocking io */
 	if (!isatty(fileno(stdin)))
@@ -2062,7 +2065,7 @@ client_init_dispatch(void)
 void
 cleanup_exit(int i)
 {
-	leave_raw_mode();
+	leave_raw_mode(force_tty_flag);
 	leave_non_blocking();
 	if (options.control_path != NULL && muxserver_sock != -1)
 		unlink(options.control_path);
diff --git a/mux.c b/mux.c
index fac43a71..239edd5f 100644
--- a/mux.c
+++ b/mux.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: mux.c,v 1.8 2009/08/20 23:54:28 dtucker Exp $ */
+/* $OpenBSD: mux.c,v 1.9 2010/01/09 05:04:24 djm Exp $ */
 /*
  * Copyright (c) 2002-2008 Damien Miller <djm@openbsd.org>
  *
@@ -82,6 +82,7 @@
 
 /* from ssh.c */
 extern int tty_flag;
+extern int force_tty_flag;
 extern Options options;
 extern int stdin_null_flag;
 extern char *host;
@@ -683,7 +684,7 @@ muxclient(const char *path)
 	signal(SIGWINCH, control_client_sigrelay);
 
 	if (tty_flag)
-		enter_raw_mode();
+		enter_raw_mode(force_tty_flag);
 
 	/*
 	 * Stick around until the controlee closes the client_fd.
@@ -708,7 +709,7 @@ muxclient(const char *path)
 	}
 
 	close(sock);
-	leave_raw_mode();
+	leave_raw_mode(force_tty_flag);
 	if (i > (int)sizeof(int))
 		fatal("%s: master returned too much data (%d > %lu)",
 		    __func__, i, (u_long)sizeof(int));
diff --git a/sshpty.h b/sshpty.h
index ac900358..cfa32248 100644
--- a/sshpty.h
+++ b/sshpty.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: sshpty.h,v 1.11 2008/05/19 15:45:07 djm Exp $ */
+/* $OpenBSD: sshpty.h,v 1.12 2010/01/09 05:04:24 djm Exp $ */
 
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
@@ -17,8 +17,8 @@
 #include <termios.h>
 
 struct termios *get_saved_tio(void);
-void	 leave_raw_mode(void);
-void	 enter_raw_mode(void);
+void	 leave_raw_mode(int);
+void	 enter_raw_mode(int);
 
 int	 pty_allocate(int *, int *, char *, size_t);
 void	 pty_release(const char *);
diff --git a/sshtty.c b/sshtty.c
index 21ade4e5..d214ce3b 100644
--- a/sshtty.c
+++ b/sshtty.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: sshtty.c,v 1.13 2008/05/19 15:45:07 djm Exp $ */
+/* $OpenBSD: sshtty.c,v 1.14 2010/01/09 05:04:24 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -54,23 +54,25 @@ get_saved_tio(void)
 }
 
 void
-leave_raw_mode(void)
+leave_raw_mode(int quiet)
 {
 	if (!_in_raw_mode)
 		return;
-	if (tcsetattr(fileno(stdin), TCSADRAIN, &_saved_tio) == -1)
-		perror("tcsetattr");
-	else
+	if (tcsetattr(fileno(stdin), TCSADRAIN, &_saved_tio) == -1) {
+		if (!quiet)
+			perror("tcsetattr");
+	} else
 		_in_raw_mode = 0;
 }
 
 void
-enter_raw_mode(void)
+enter_raw_mode(int quiet)
 {
 	struct termios tio;
 
 	if (tcgetattr(fileno(stdin), &tio) == -1) {
-		perror("tcgetattr");
+		if (!quiet)
+			perror("tcgetattr");
 		return;
 	}
 	_saved_tio = tio;
@@ -86,8 +88,9 @@ enter_raw_mode(void)
 	tio.c_oflag &= ~OPOST;
 	tio.c_cc[VMIN] = 1;
 	tio.c_cc[VTIME] = 0;
-	if (tcsetattr(fileno(stdin), TCSADRAIN, &tio) == -1)
-		perror("tcsetattr");
-	else
+	if (tcsetattr(fileno(stdin), TCSADRAIN, &tio) == -1) {
+		if (!quiet)
+			perror("tcsetattr");
+	} else
 		_in_raw_mode = 1;
 }