1 /*- 2 * Copyright (c) 1991, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: src/usr.bin/dirname/dirname.c,v 1.5.6.2 2001/08/02 01:49:44 obrien Exp $ 30 * $DragonFly: src/usr.bin/dirname/dirname.c,v 1.5 2004/08/25 01:40:23 dillon Exp $ 31 * 32 * @(#) Copyright (c) 1991, 1993, 1994 The Regents of the University of California. All rights reserved. 33 * @(#)dirname.c 8.4 (Berkeley) 5/4/95 34 */ 35 36 #include <err.h> 37 #include <libgen.h> 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <unistd.h> 41 42 static void usage(void); 43 44 int 45 main(int argc, char **argv) 46 { 47 char *p; 48 int ch; 49 50 /* 51 * No options supported 52 */ 53 while ((ch = getopt(argc, argv, "")) != -1) { 54 switch(ch) { 55 default: 56 usage(); 57 } 58 } 59 argc -= optind; 60 argv += optind; 61 62 if (argc != 1) 63 usage(); 64 65 if ((p = dirname(argv[0])) == NULL) 66 err(1, "%s", argv[0]); 67 printf("%s\n", p); 68 exit(0); 69 } 70 71 static void 72 usage(void) 73 { 74 fprintf(stderr, "usage: dirname path\n"); 75 exit(1); 76 } 77