- add libbb function str_tolower to convert a string to lowercase.

[oweals/busybox.git] / init / mesg.c

diff --git a/init/mesg.c b/init/mesg.c
index f9b46e02968564bb617ad35ce5440acd7f523b88..77bfe0e211d13e4fac662bf7bf7e2927d79f2c7a 100644 (file)
--- a/init/mesg.c
+++ b/init/mesg.c
@@ -1,26 +1,13 @@
+/* vi: set sw=4 ts=4: */
 /*
- *  mesg implementation for busybox
+ * mesg implementation for busybox
  *
- *  Copyright (c) 2002 Manuel Novoa III  <mjn3@codepoet.org>
+ * Copyright (c) 2002 Manuel Novoa III  <mjn3@codepoet.org>
  *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
  */
 
-#include <unistd.h>
-#include <stdlib.h>
-#include "libbb.h"
+#include "busybox.h"
 
 #ifdef USE_TTY_GROUP
 #define S_IWGRP_OR_S_IWOTH     S_IWGRP
@@ -28,31 +15,32 @@
 #define S_IWGRP_OR_S_IWOTH     (S_IWGRP | S_IWOTH)
 #endif
 
-extern int mesg_main(int argc, char *argv[])
+int mesg_main(int argc, char **argv);
+int mesg_main(int argc, char **argv)
 {
        struct stat sb;
-       char *tty;
-       char c;
+       const char *tty;
+       char c = 0;
 
-       if ((--argc == 0)
-               || ((argc == 1) && (((c = **++argv) == 'y') || (c == 'n')))) {
-               if ((tty = ttyname(STDERR_FILENO)) == NULL) {
+       if (--argc == 0
+        || (argc == 1 && ((c = **++argv) == 'y' || c == 'n'))
+       ) {
+               tty = ttyname(STDERR_FILENO);
+               if (tty == NULL) {
                        tty = "ttyname";
                } else if (stat(tty, &sb) == 0) {
+                       mode_t m;
                        if (argc == 0) {
-                               puts(((sb.st_mode & (S_IWGRP | S_IWOTH)) ==
-                                         0) ? "is n" : "is y");
+                               puts((sb.st_mode & (S_IWGRP|S_IWOTH)) ? "is y" : "is n");
                                return EXIT_SUCCESS;
                        }
-                       if (chmod
-                               (tty,
-                                (c ==
-                                 'y') ? sb.st_mode | (S_IWGRP_OR_S_IWOTH) : sb.
-                                st_mode & ~(S_IWGRP | S_IWOTH)) == 0) {
+                       m = (c == 'y') ? sb.st_mode | S_IWGRP_OR_S_IWOTH
+                                      : sb.st_mode & ~(S_IWGRP|S_IWOTH);
+                       if (chmod(tty, m) == 0) {
                                return EXIT_SUCCESS;
                        }
                }
-               perror_msg_and_die("%s", tty);
+               bb_perror_msg_and_die("%s", tty);
        }
-       show_usage();
+       bb_show_usage();
 }