1/* vi: set sw=4 ts=4: */
2/*
3 * Mini chroot implementation for busybox
4 *
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
6 *
7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
8 */
9
10/* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */
11
12#include "libbb.h"
13
14int chroot_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
15int chroot_main(int argc UNUSED_PARAM, char **argv)
16{
17	++argv;
18	if (!*argv)
19		bb_show_usage();
20	xchroot(*argv);
21	xchdir("/");
22
23	++argv;
24	if (!*argv) { /* no 2nd param (PROG), use shell */
25		argv -= 2;
26		argv[0] = getenv("SHELL");
27		if (!argv[0]) {
28			argv[0] = (char *) DEFAULT_SHELL;
29		}
30		argv[1] = (char *) "-i";
31	}
32
33	BB_EXECVP_or_die(argv);
34}
35