dirname.c revision 99112
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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34#ifndef lint 35static const char copyright[] = 36"@(#) Copyright (c) 1991, 1993, 1994\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38#endif /* not lint */ 39 40#ifndef lint 41static const char sccsid[] = "@(#)dirname.c 8.4 (Berkeley) 5/4/95"; 42#endif /* not lint */ 43#include <sys/cdefs.h> 44__FBSDID("$FreeBSD: head/usr.bin/dirname/dirname.c 99112 2002-06-30 05:25:07Z obrien $"); 45 46#include <err.h> 47#include <libgen.h> 48#include <stdio.h> 49#include <stdlib.h> 50#include <unistd.h> 51 52void usage(void); 53 54int 55main(argc, argv) 56 int argc; 57 char **argv; 58{ 59 char *p; 60 int ch; 61 62 while ((ch = getopt(argc, argv, "")) != -1) 63 switch(ch) { 64 case '?': 65 default: 66 usage(); 67 } 68 argc -= optind; 69 argv += optind; 70 71 if (argc != 1) 72 usage(); 73 74 if ((p = dirname(*argv)) == NULL) 75 err(1, "%s", *argv); 76 (void)printf("%s\n", p); 77 exit(0); 78} 79 80void 81usage() 82{ 83 84 (void)fprintf(stderr, "usage: dirname path\n"); 85 exit(1); 86} 87