usr/src/ucbcmd/biff/biff.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22
  23 /*
  24  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  25  * Use is subject to license terms.
  26  */
  27
  28 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  29 /*        All Rights Reserved   */
  30
  31 /*
  32  * University Copyright- Copyright (c) 1982, 1986, 1988
  33  * The Regents of the University of California
  34  * All Rights Reserved
  35  *
  36  * University Acknowledgment- Portions of this document are derived from
  37  * software developed by the University of California, Berkeley, and its
  38  * contributors.
  39  */
  40
  41 #pragma ident   "%Z%%M% %I%     %E% SMI"
  42
  43 /*
  44  * biff
  45  */
  46
  47 #include <stdlib.h>
  48 #include <unistd.h>
  49 #include <sys/types.h>
  50 #include <sys/stat.h>
  51 #include <stdio.h>
  52 #include <locale.h>
  53
  54 int
  55 main(int argc, char **argv)
  56 {
  57         char *cp = ttyname(2);
  58         struct stat stb;
  59
  60         (void) setlocale(LC_ALL, "");
  61
  62 #if !defined(TEXT_DOMAIN)
  63 #define TEXT_DOMAIN "SYS_TEST"
  64 #endif
  65         (void) textdomain(TEXT_DOMAIN);
  66
  67         argc--, argv++;
  68         if (cp == 0) {
  69                 (void) fprintf(stderr,
  70                         gettext("biff failed:  cannot locate your tty:  "
  71                                 "ttyname() for file descriptor 2 returned"
  72                                 " NULL\n"));
  73                 exit(1);
  74         }
  75         if (stat(cp, &stb) < 0)
  76                 perror(cp), exit(1);
  77         if (argc == 0) {
  78                 (void) printf("is %s\n",
  79                         stb.st_mode&0100 ? gettext("y") : gettext("n"));
  80                 exit((stb.st_mode&0100) ? 0 : 1);
  81         }
  82         switch (argv[0][0]) {
  83
  84         case 'y':
  85                 if (chmod(cp, stb.st_mode|0100) < 0)
  86                         perror(cp);
  87                 break;
  88
  89         case 'n':
  90                 if (chmod(cp, stb.st_mode&~0100) < 0)
  91                         perror(cp);
  92                 break;
  93
  94         default:
  95                 (void) fprintf(stderr, gettext("usage: biff [y] [n]\n"));
  96         }
  97         return ((stb.st_mode&0100) ? 0 : 1);
  98 }