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/* vi: set sw=4 ts=4: */
/*
* Mini chroot implementation for busybox
*
* Copyright (C) 1999-2003 by Erik Andersen <andersen@codepoet.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include "busybox.h"
int chroot_main(int argc, char **argv)
{
if (argc < 2) {
bb_show_usage();
}
++argv;
if (chroot(*argv) || (chdir("/"))) {
bb_perror_msg_and_die("cannot change root directory to %s", *argv);
}
++argv;
if (argc == 2) {
argv -= 2;
if (!(*argv = getenv("SHELL"))) {
*argv = (char *) "/bin/sh";
}
argv[1] = (char *) "-i";
}
execvp(*argv, argv);
bb_perror_msg_and_die("cannot execute %s", *argv);
}
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