4.4BSD snapshot (revision 8.1); add 1993 to copyright

[unix-history] / usr / src / lib / libc / gen / isatty.c

diff --git a/usr/src/lib/libc/gen/isatty.c b/usr/src/lib/libc/gen/isatty.c
index fab1fd9..fc9de90 100644 (file)
--- a/usr/src/lib/libc/gen/isatty.c
+++ b/usr/src/lib/libc/gen/isatty.c
@@ -1,18 +1,22 @@
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)isatty.c   5.2 (Berkeley) %G%";
-#endif LIBC_SCCS and not lint
-

 /*
 /*

- * Returns 1 iff file is a tty
+ * Copyright (c) 1988, 1993
+ *     The Regents of the University of California.  All rights reserved.
+ *
+ * %sccs.include.redist.c%

  */
 
  */
 

-#include <sgtty.h>
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)isatty.c   8.1 (Berkeley) %G%";
+#endif /* LIBC_SCCS and not lint */
+
+#include <termios.h>
+#include <unistd.h>

 
 

-isatty(f)
+int
+isatty(fd)
+       int fd;

 {
 {

-       struct sgttyb ttyb;
+       struct termios t;

 
 

-       if (ioctl(f, TIOCGETP, &ttyb) < 0)
-               return(0);
-       return(1);
+       return(tcgetattr(fd, &t) != -1);

 }
 }