2 * Copyright (c) 2003 Matthew Dillon <dillon@backplane.com>
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.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * $DragonFly: src/usr.bin/relpath/relpath.c,v 1.2 2004/12/28 19:50:11 liamfoy Exp $
30 * This program returns a path for 'path' which is relative to the specified
42 main(int ac, char **av)
51 fprintf(stderr, "%s base path\n", av[0]);
52 fprintf(stderr, "\treturns a relative path for path from base\n");
55 if (stat(av[1], &st1) < 0)
56 err(1, "Unable to stat %s", av[1]);
59 rbase = path + strlen(path);
61 while (rbase > path && rbase[-1] != '/')
67 error = stat(path, &st2);
70 st2.st_dev == st1.st_dev &&
71 st2.st_ino == st1.st_ino
73 printf("%s\n", rbase + 1);
77 fprintf(stderr, "%s is not a subdirectory of %s\n", av[2], av[1]);