1 /* $OpenBSD: unveil.c,v 1.2 2021/07/12 15:09:18 beck Exp $ */ 2 /* 3 * Copyright (c) 2020 Rob Pierce <rob@openbsd.org> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #include <err.h> 19 #include <unistd.h> 20 21 int 22 main(int argc, char *argv[]) 23 { 24 if (unveil("/tmp", "r") == -1) 25 err(1, "unveil /tmp"); 26 if (unveil(NULL, NULL) == -1) 27 err(1, "unveil"); 28 29 chdir("/var"); 30 return 0; 31 } 32