xnu-2422.115.4.tar.gz

[apple/xnu.git] / bsd / sys / tty.h

diff --git a/bsd/sys/tty.h b/bsd/sys/tty.h
index ecfb234d5ba4a4e995b9ddd12bbf7ae009ca9edd..28ee788a5c650f6e92bdc46b8672bc27a14f1eff 100644 (file)
--- a/bsd/sys/tty.h
+++ b/bsd/sys/tty.h
@@ -144,6 +144,7 @@ struct tty {
        int     t_lowat;                /* Low water mark. */
        int     t_gen;                  /* Generation number. */
        void    *t_iokit;               /* IOKit management */
+       int     t_refcnt;               /* reference count */
 };
 
 #define TTY_NULL (struct tty *)0