1 /* $OpenBSD: realpath-chdir.c,v 1.1.1.1 2019/08/05 15:16:39 bluhm Exp $ */ 2 /* 3 * Copyright (c) 2019 Alexander Bluhm <bluhm@openbsd.org> 4 * Copyright (c) 2019 Moritz Buhl <mbuhl@moritzbuhl.de> 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 #include <err.h> 20 #include <limits.h> 21 #include <stdio.h> 22 #include <stdlib.h> 23 #include <unistd.h> 24 25 int 26 main(int argc, char *argv[]) 27 { 28 char *cwd, *dir, *path = NULL; 29 char res[PATH_MAX]; 30 31 if (argc != 3) 32 errx(2, "usage: realpath-chdir cwd dir"); 33 34 cwd = argv[1]; 35 dir = argv[2]; 36 37 if (chdir(cwd) == -1) 38 err(1, "chdir %s", cwd); 39 40 if (realpath(dir, res) == NULL) 41 err(1, "realpath %s", dir); 42 43 return 0; 44 } 45