1 /* $OpenBSD: pwd.c,v 1.10 2006/04/01 18:08:48 deraadt Exp $ */ 2 /* $NetBSD: pwd.c,v 1.7 1995/03/21 09:08:18 cgd Exp $ */ 3 4 /* 5 * Copyright (c) 1991, 1993, 1994 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #ifndef lint 34 static char copyright[] = 35 "@(#) Copyright (c) 1991, 1993, 1994\n\ 36 The Regents of the University of California. All rights reserved.\n"; 37 #endif /* not lint */ 38 39 #ifndef lint 40 #if 0 41 static char sccsid[] = "@(#)pwd.c 8.3 (Berkeley) 4/1/94"; 42 #else 43 static char rcsid[] = "$OpenBSD: pwd.c,v 1.10 2006/04/01 18:08:48 deraadt Exp $"; 44 #endif 45 #endif /* not lint */ 46 47 #include <err.h> 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <unistd.h> 51 52 extern char *__progname; 53 54 void usage(void); 55 56 int 57 main(int argc, char *argv[]) 58 { 59 int ch; 60 char *p; 61 62 /* 63 * Flags for pwd are a bit strange. The POSIX 1003.2B/D9 document 64 * has an optional -P flag for physical, which is what this program 65 * will produce by default. The logical flag, -L, should fail, as 66 * there's no way to display a logical path after forking. We don't 67 * document either flag, only adding -P for future portability. 68 */ 69 while ((ch = getopt(argc, argv, "P")) != -1) 70 switch (ch) { 71 case 'P': 72 break; 73 default: 74 usage(); 75 } 76 argc -= optind; 77 argv += optind; 78 79 if (argc != 0) 80 usage(); 81 82 if ((p = getcwd(NULL, (size_t)0)) == NULL) 83 err(1, "getcwd"); 84 (void)printf("%s\n", p); 85 exit(0); 86 } 87 88 void 89 usage(void) 90 { 91 (void)fprintf(stderr, "usage: %s\n", __progname); 92 exit(1); 93 } 94