2 * Copyright (c) 1991, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
29 * @(#) Copyright (c) 1991, 1993, 1994 The Regents of the University of California. All rights reserved.
30 * @(#)pwd.c 8.3 (Berkeley) 4/1/94
31 * $FreeBSD: src/bin/pwd/pwd.c,v 1.9.2.3 2002/06/17 11:04:22 tjr Exp $
34 #include <sys/param.h>
35 #include <sys/types.h>
46 static char *getcwd_logical(void);
47 static void usage(void);
50 main(int argc, char *argv[])
59 if ((p = realpath(argv[1], buf)) == NULL)
60 err(1, "%s", argv[1]);
65 while ((ch = getopt(argc, argv, "LP")) != -1)
84 * If we're trying to find the logical current directory and that
85 * fails, behave as if -P was specified.
87 if ((!physical && (p = getcwd_logical()) != NULL) ||
88 (p = getcwd(NULL, 0)) != NULL)
99 if (strcmp(getprogname(), "realpath") == 0)
100 fprintf(stderr, "usage: realpath [path]\n");
107 struct stat logic, phy;
111 * Check that $PWD is an absolute logical pathname referring to
112 * the current working directory.
114 if ((pwd = getenv("PWD")) != NULL && *pwd == '/') {
115 if (stat(pwd, &logic) == -1 || stat(".", &phy) == -1)
117 if (logic.st_dev == phy.st_dev && logic.st_ino == phy.st_ino)