ubase

commit 2d45a04b92df641158ca400873a522fede1d9a01
parent 6da76775cb54635ce07dfcd3894cdef3df8c692f
Author: sin <sin@2f30.org>
Date:   Sun, 30 Nov 2014 13:04:47 +0000

Check if 0, 1, 2 are valid tty file descriptors

Diffstat:
M
login.c
 | 
4
++--

1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/login.c b/login.c
@@ -71,8 +71,8 @@ main(int argc, char *argv[])
 	if (argc < 1)
 		usage();
 
-	if (isatty(STDIN_FILENO) == 0)
-		eprintf("stdin is not a tty\n");
+	if (isatty(0) == 0 || isatty(1) == 0 || isatty(2) == 0)
+		eprintf("no tty");
 
 	user = argv[0];
 	errno = 0;