From 4ec8ade11c23eec4b652cdd7ea47ddf346b7be93 Mon Sep 17 00:00:00 2001
From: Nicholas Marriott <nicm@openbsd.org>
Date: Tue, 11 Aug 2009 20:29:04 +0000
Subject: [PATCH] Add a TTY_OPENED flag and tidy a little.

---
 tmux.h |  1 +
 tty.c  | 34 +++++++++++++++++-----------------
 2 files changed, 18 insertions(+), 17 deletions(-)

diff --git a/tmux.h b/tmux.h
index 060d2bd1..53590eaf 100644
--- a/tmux.h
+++ b/tmux.h
@@ -869,6 +869,7 @@ struct tty {
 #define TTY_ESCAPE 0x4
 #define TTY_UTF8 0x8
 #define TTY_STARTED 0x10
+#define TTY_OPENED 0x20
 	int    		 flags;
 
 	int		 term_flags;
diff --git a/tty.c b/tty.c
index 1584444e..1da0c2ff 100644
--- a/tty.c
+++ b/tty.c
@@ -80,8 +80,11 @@ tty_open(struct tty *tty, const char *overrides, char **cause)
 		tty->log_fd = -1;
 
 	tty->term = tty_term_find(tty->termname, tty->fd, overrides, cause);
-	if (tty->term == NULL)
-		goto error;
+	if (tty->term == NULL) {
+		tty_close(tty);
+		return (-1);
+	}
+	tty->flags |= TTY_OPENED;
 
 	tty->in = buffer_create(BUFSIZ);
 	tty->out = buffer_create(BUFSIZ);
@@ -95,12 +98,6 @@ tty_open(struct tty *tty, const char *overrides, char **cause)
 	tty_fill_acs(tty);
 
 	return (0);
-
-error:
-	close(tty->fd);
-	tty->fd = -1;
-
-	return (-1);
 }
 
 void
@@ -289,9 +286,6 @@ tty_get_acs(struct tty *tty, u_char ch)
 void
 tty_close(struct tty *tty)
 {
-	if (tty->fd == -1)
-		return;
-
 	if (tty->log_fd != -1) {
 		close(tty->log_fd);
 		tty->log_fd = -1;
@@ -299,14 +293,20 @@ tty_close(struct tty *tty)
 
 	tty_stop_tty(tty);
 
-	tty_term_free(tty->term);
-	tty_keys_free(tty);
+	if (tty->flags & TTY_OPENED) {
+		tty_term_free(tty->term);
+		tty_keys_free(tty);
 
-	close(tty->fd);
-	tty->fd = -1;
+		buffer_destroy(tty->in);
+		buffer_destroy(tty->out);
 
-	buffer_destroy(tty->in);
-	buffer_destroy(tty->out);
+		tty->flags &= ~TTY_OPENED;
+	}
+
+	if (tty->fd != -1) {
+		close(tty->fd);
+		tty->fd = -1;
+	}
 }
 
 void