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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*
     23  * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
     27 /*	  All Rights Reserved  	*/
     28 
     29 
     30 #pragma ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.8	*/
     31 
     32 #include <stdio.h>
     33 #include <string.h>
     34 #include <errno.h>
     35 #include <unistd.h>
     36 #include <stdlib.h>
     37 
     38 int
     39 main(int argc, char **argv)
     40 {
     41 	if (argc < 3) {
     42 		(void) fprintf(stderr,
     43 		    "usage: chroot rootdir command [arg ...]\n");
     44 		exit(1);
     45 	}
     46 
     47 	if (chroot(argv[1]) != 0) {
     48 		(void) fprintf(stderr, "chroot(\"%s\"): %s\n", argv[1],
     49 		    strerror(errno));
     50 		exit(1);
     51 	}
     52 
     53 	if (chdir("/") != 0) {
     54 		(void) fprintf(stderr, "Can't chdir to new root\n");
     55 		exit(1);
     56 	}
     57 
     58 	(void) execv(argv[2], &argv[2]);
     59 	perror("chroot: exec failed");
     60 	return (1);
     61 }
     62