xref: /onnv-gate/usr/src/cmd/chroot/chroot.c (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * CDDL HEADER START
3*0Sstevel@tonic-gate  *
4*0Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*0Sstevel@tonic-gate  * with the License.
8*0Sstevel@tonic-gate  *
9*0Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate  * and limitations under the License.
13*0Sstevel@tonic-gate  *
14*0Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate  *
20*0Sstevel@tonic-gate  * CDDL HEADER END
21*0Sstevel@tonic-gate  */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate  * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
24*0Sstevel@tonic-gate  * Use is subject to license terms.
25*0Sstevel@tonic-gate  */
26*0Sstevel@tonic-gate /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
27*0Sstevel@tonic-gate /*	  All Rights Reserved  	*/
28*0Sstevel@tonic-gate 
29*0Sstevel@tonic-gate 
30*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.8	*/
31*0Sstevel@tonic-gate 
32*0Sstevel@tonic-gate #include <stdio.h>
33*0Sstevel@tonic-gate #include <string.h>
34*0Sstevel@tonic-gate #include <errno.h>
35*0Sstevel@tonic-gate #include <unistd.h>
36*0Sstevel@tonic-gate #include <stdlib.h>
37*0Sstevel@tonic-gate 
38*0Sstevel@tonic-gate int
main(int argc,char ** argv)39*0Sstevel@tonic-gate main(int argc, char **argv)
40*0Sstevel@tonic-gate {
41*0Sstevel@tonic-gate 	if (argc < 3) {
42*0Sstevel@tonic-gate 		(void) fprintf(stderr,
43*0Sstevel@tonic-gate 		    "usage: chroot rootdir command [arg ...]\n");
44*0Sstevel@tonic-gate 		exit(1);
45*0Sstevel@tonic-gate 	}
46*0Sstevel@tonic-gate 
47*0Sstevel@tonic-gate 	if (chroot(argv[1]) != 0) {
48*0Sstevel@tonic-gate 		(void) fprintf(stderr, "chroot(\"%s\"): %s\n", argv[1],
49*0Sstevel@tonic-gate 		    strerror(errno));
50*0Sstevel@tonic-gate 		exit(1);
51*0Sstevel@tonic-gate 	}
52*0Sstevel@tonic-gate 
53*0Sstevel@tonic-gate 	if (chdir("/") != 0) {
54*0Sstevel@tonic-gate 		(void) fprintf(stderr, "Can't chdir to new root\n");
55*0Sstevel@tonic-gate 		exit(1);
56*0Sstevel@tonic-gate 	}
57*0Sstevel@tonic-gate 
58*0Sstevel@tonic-gate 	(void) execv(argv[2], &argv[2]);
59*0Sstevel@tonic-gate 	perror("chroot: exec failed");
60*0Sstevel@tonic-gate 	return (1);
61*0Sstevel@tonic-gate }
62