Fix a silly off-by-one error noticed by Santiago Garcia Mantinan <manty@debian.org>

[oweals/busybox.git] / tty.c

diff --git a/tty.c b/tty.c
index 3a318ebbab5f5c1a40ac04e748a1a9b2b9ca86fa..4510c29963ff88cfea1a13c508f0267c36066b2c 100644 (file)
--- a/tty.c
+++ b/tty.c
@@ -20,17 +20,11 @@
  *
  */
 
-#include "internal.h"
 #include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
 #include <sys/types.h>
-
-static const char tty_usage[] = "tty\n"
-#ifndef BB_FEATURE_TRIVIAL_HELP
-       "\nPrint the file name of the terminal connected to standard input.\n\n"
-       "Options:\n"
-       "\t-s\tprint nothing, only return an exit status\n"
-#endif
-       ;
+#include "busybox.h"
 
 extern int tty_main(int argc, char **argv)
 {
@@ -38,7 +32,7 @@ extern int tty_main(int argc, char **argv)
 
        if (argc > 1) {
                if (argv[1][0] != '-' || argv[1][1] != 's')
-                       usage(tty_usage);
+                       show_usage();
        } else {
                tty = ttyname(0);
                if (tty)
@@ -46,5 +40,5 @@ extern int tty_main(int argc, char **argv)
                else
                        puts("not a tty");
        }
-       exit(isatty(0) ? TRUE : FALSE);
+       return(isatty(0) ? EXIT_SUCCESS : EXIT_FAILURE);
 }