1 /* $OpenBSD: dirname.c,v 1.11 2005/04/07 07:16:21 otto Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #ifndef lint 20 static char rcsid[] = "$OpenBSD: dirname.c,v 1.11 2005/04/07 07:16:21 otto Exp $"; 21 #endif /* not lint */ 22 23 #include <err.h> 24 #include <libgen.h> 25 #include <locale.h> 26 #include <stdio.h> 27 #include <stdlib.h> 28 #include <unistd.h> 29 30 void usage(void); 31 32 int 33 main(int argc, char *argv[]) 34 { 35 int ch; 36 char *dir; 37 38 setlocale(LC_ALL, ""); 39 40 while ((ch = getopt(argc, argv, "")) != -1) { 41 switch (ch) { 42 default: 43 usage(); 44 } 45 } 46 argc -= optind; 47 argv += optind; 48 49 if (argc != 1) 50 usage(); 51 52 if ((dir = dirname(argv[0])) == NULL) 53 err(1, "%s", argv[0]); 54 puts(dir); 55 exit(0); 56 } 57 58 extern char *__progname; 59 60 void 61 usage(void) 62 { 63 (void)fprintf(stderr, "Usage: %s pathname\n", __progname); 64 exit(1); 65 } 66