11.11Sjoerg/* $NetBSD: biff.c,v 1.11 2011/08/29 14:24:03 joerg Exp $ */ 21.3Sglass 31.1Scgd/* 41.3Sglass * Copyright (c) 1980, 1993 51.3Sglass * The Regents of the University of California. All rights reserved. 61.1Scgd * 71.1Scgd * Redistribution and use in source and binary forms, with or without 81.1Scgd * modification, are permitted provided that the following conditions 91.1Scgd * are met: 101.1Scgd * 1. Redistributions of source code must retain the above copyright 111.1Scgd * notice, this list of conditions and the following disclaimer. 121.1Scgd * 2. Redistributions in binary form must reproduce the above copyright 131.1Scgd * notice, this list of conditions and the following disclaimer in the 141.1Scgd * documentation and/or other materials provided with the distribution. 151.8Sagc * 3. Neither the name of the University nor the names of its contributors 161.1Scgd * may be used to endorse or promote products derived from this software 171.1Scgd * without specific prior written permission. 181.1Scgd * 191.1Scgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 201.1Scgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 211.1Scgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 221.1Scgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 231.1Scgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 241.1Scgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 251.1Scgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 261.1Scgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 271.1Scgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 281.1Scgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 291.1Scgd * SUCH DAMAGE. 301.1Scgd */ 311.1Scgd 321.4Slukem#include <sys/cdefs.h> 331.1Scgd#ifndef lint 341.10Slukem__COPYRIGHT("@(#) Copyright (c) 1980, 1993\ 351.10Slukem The Regents of the University of California. All rights reserved."); 361.1Scgd#endif /* not lint */ 371.1Scgd 381.1Scgd#ifndef lint 391.3Sglass#if 0 401.3Sglassstatic char sccsid[] = "@(#)biff.c 8.1 (Berkeley) 6/6/93"; 411.3Sglass#else 421.11Sjoerg__RCSID("$NetBSD: biff.c,v 1.11 2011/08/29 14:24:03 joerg Exp $"); 431.3Sglass#endif 441.1Scgd#endif /* not lint */ 451.1Scgd 461.1Scgd#include <sys/types.h> 471.1Scgd#include <sys/stat.h> 481.3Sglass 491.3Sglass#include <err.h> 501.3Sglass#include <errno.h> 511.1Scgd#include <stdio.h> 521.3Sglass#include <stdlib.h> 531.3Sglass#include <string.h> 541.3Sglass#include <unistd.h> 551.1Scgd 561.11Sjoerg__dead static void usage(void); 571.1Scgd 581.4Slukemint 591.9Sxtraememain(int argc, char *argv[]) 601.1Scgd{ 611.3Sglass struct stat sb; 621.3Sglass int ch; 631.6Smycroft const char *name; 641.3Sglass 651.3Sglass 661.5Slukem while ((ch = getopt(argc, argv, "")) != -1) 671.3Sglass switch(ch) { 681.3Sglass case '?': 691.3Sglass default: 701.3Sglass usage(); 711.3Sglass } 721.3Sglass argc -= optind; 731.3Sglass argv += optind; 741.3Sglass 751.3Sglass if ((name = ttyname(STDERR_FILENO)) == NULL) 761.3Sglass err(2, "tty"); 771.3Sglass 781.3Sglass if (stat(name, &sb)) 791.3Sglass err(2, "stat"); 801.3Sglass 811.3Sglass if (*argv == NULL) { 821.3Sglass (void)printf("is %s\n", sb.st_mode&0100 ? "y" : "n"); 831.3Sglass exit(sb.st_mode & 0100 ? 0 : 1); 841.1Scgd } 851.1Scgd 861.3Sglass switch(argv[0][0]) { 871.3Sglass case 'n': 881.3Sglass if (chmod(name, sb.st_mode & ~0100) < 0) 891.7Sitojun err(2, "%s", name); 901.3Sglass break; 911.1Scgd case 'y': 921.3Sglass if (chmod(name, sb.st_mode | 0100) < 0) 931.7Sitojun err(2, "%s", name); 941.1Scgd break; 951.1Scgd default: 961.3Sglass usage(); 971.1Scgd } 981.3Sglass exit(sb.st_mode & 0100 ? 0 : 1); 991.3Sglass} 1001.3Sglass 1011.3Sglassstatic void 1021.9Sxtraemeusage(void) 1031.3Sglass{ 1041.3Sglass (void)fprintf(stderr, "usage: biff [y | n]\n"); 1051.3Sglass exit(2); 1061.1Scgd} 107